JPH0610101U - Packaging equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] A packaging sheet is pulled out to a specified length on the packaging table and cut, and the packaged object is dropped into the opening of the packaging table on which the cut packaging sheet is placed. Then, in the packaging device configured to squeeze the packaging sheet and wrap the article to be packaged in the packaging sheet, the packaging sheet wound in a roll shape can be pulled out and cut without wrinkles. A packaging sheet 1 wound in a roll shape is placed on a freely rotatable rotating member 13, and a sheet supporting member 48 is extended from a pedestal 35 of a cutter 33 for cutting to the rotating member 13 side for packaging. Prevent the seat 1 from falling. Then, the tip of the sheet supporting member 48 is brought into contact with the outer surface of the rotating member 13 to give resistance to the rotation of the rotating member 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a packaging device for agricultural crops, in which a spherical object to be packaged (for example, vegetables such as lettuce and cabbage, or fruits such as melon and apple) is wrapped in a packaging sheet.

[0002]

[Prior art]

 An example of the packaging device as described above is disclosed in Japanese Patent Application Laid-Open No. 3-133710. In other words, a packaging table having an opening through which the object to be packaged falls is provided, the packaging sheet cut to a predetermined length is placed on the packaging table, and the object to be packaged is dropped into the opening from above. As a result, the packaging sheet is squeezed at the outer edge of the opening, the packaged item is wrapped in the packaging sheet, and is supported by the lower support table, after which the excess portion of the squeezed packaging sheet is cut and cut. This is a configuration in which the packaging sheet is fastened.

The packaging device as described above may be provided with a withdrawal mechanism for withdrawing a packaging sheet of a predetermined length to a predetermined position on the opening of the packaging table for the next packaging after completion of one packaging. Proposed. In this structure, for example, as shown in FIG. 17A, the packaging sheet 1 is wound in a roll shape, and the packaging sheet 1 is placed on a pair of freely rotating support rollers 13 (corresponding to a rotating member). Then, at the clamping position close to the packaging sheet 1, the operation arm 41 of the pulling-out mechanism 38 clamps the end portion 1b of the packaging sheet 1, and from this state, the pulling-out mechanism 38 moves to the right side of the drawing to move the packaging sheet 1 Pull out. When the packaging sheet 1 is pulled out by a predetermined length as shown in FIG. 17B, the pulling-out mechanism 38 stops at this pulling-out position, the packaging sheet 1 is cut by the cutter 33, and the operating arm of the pulling-out mechanism 38 is cut. The end portion 1b of the packaging sheet 1 cut at 41 is released. Therefore, in the state shown in FIG. 17B, when the operation arm 41 operates to separate the end 1b of the packaging sheet 1 and drops an article to be packaged into the opening 2a of the packaging table 2 from above, The package is wrapped in the packaging sheet 1 and falls on the lower support table.

[0004]

[Problems to be solved by the device]

 As shown in FIGS. 17 (a) and 17 (b), when the packaging sheet 1 is pulled out onto the packaging table 2 by the pulling-out mechanism 38, the roll-shaped portion of the packaging sheet 1 is also rotated accordingly. 1 is rolled out. In this case, when the pulling-out mechanism 38 pulls out the packaging sheet 1 by a predetermined length and stops, the roll-shaped portion of the packaging sheet 1 may not immediately stop rotating. This is because the roll-shaped portion of the packaging sheet 1 has a relatively large weight, and once it starts rotating, it cannot stop suddenly by itself due to its inertia.

It is assumed that the roll-shaped portion of the packaging sheet 1 is delayed and stopped when the pulling-out mechanism 38 pulls out and stops the packaging sheet 1 as shown in FIG. 17B. In this case, the pulling mechanism 38 holding the end 1b of the packaging sheet 1 is stopped, but the packaging sheet 1 is fed out from the roll-shaped portion of the packaging sheet 1. The wrapping sheet 1 undulates or a large wrinkle occurs between the portion and the drawing mechanism 38. Therefore, if the packaging sheet is cut with a cutter while the packaging sheet has large wrinkles, the packaging sheet may not be cut well over the entire width, or there may be large wrinkles on the cut portion on the roll-shaped side. May occur. Therefore, there will be a problem in the subsequent packaging work and the subsequent pulling out of the packaging sheet. An object of the present invention is to ensure that when the packaging sheet is pulled out, the packaging sheet is surely cut across the entire width and no wrinkles are formed at the cut portion of the packaging sheet.

[0006]

[Means for Solving the Problems]

 A feature of the present invention is that the packaging device as described above is configured as follows. In other words, a packaging sheet wound in a roll is placed on a freely rotatable rotating member, the packaging sheet is rotatably supported around the roll axis, and the clamping position for clamping the edge of the packaging sheet and the packaging position. While the roll-shaped part of the sheet is rotated, the sandwiched sheet is pulled out on the wrapping table by a predetermined length and is reciprocally movable to and from the pulling position. It is equipped with a cutter that cuts a predetermined position on the roll-shaped side of the packaging sheet, and extends from the pedestal that supports the packaging sheet under the cutter to the rotating member side, preventing the packaging sheet from falling. In addition, a seat support member is provided, the tip of which makes contact with the outer surface of the rotating member to provide resistance to rotation of the rotating member.

[0007]

[Action]

 With the configuration according to the present invention, as shown in FIG. 3A, for example, the roll-shaped portion of the packaging sheet 1 is supported by the rotating member 13 so as to be freely rotatable. In this state, the pull-out mechanism 38 (corresponding to the sandwiching position) (see the state in FIG. 3B) sandwiches the end 1b of the packaging sheet 1 and moves to the right side of the paper to package the packaging sheet 1. Suppose that it has started to be pulled out on the table 2. In this case, as shown in FIG. 3A and FIG. 2, the sheet support member 47 (48) extends from the pedestal 35 on the cutter 33 side, and its tip comes into contact with the outer surface of the rotating member 13. There is. As a result, when the packaging sheet 1 is pulled out by the pull-out mechanism 38, the rotation of the rotating member 13 is slightly braked by the contact action of the sheet support member 47 (48), and the roll-shaped portion of the packaging sheet 1 is rotated and wrapped. A slight amount of braking is applied to the pulling out of the sheet 1, and the packaging sheet 1 is pulled out without being loosened in the middle of the sheet and is taut.

Then, as shown in FIG. 4B, it is assumed that the withdrawal of the packaging sheet 1 is completed and the withdrawal mechanism 38 is stopped at that position (corresponding to the withdrawn position). In this case, the leading end of the sheet support member 47 (48) comes into contact with the outer surface of the rotating member 13, and a slight braking is applied to the rotation of the roll-shaped portion of the packaging sheet 1 and the withdrawal of the packaging sheet 1. Simultaneously with the stop, the roll-shaped portion of the packaging sheet 1 and the rotating member 13 also immediately stop. This prevents the packaging sheet 1 from waviness or wrinkling between the roll-shaped portion of the packaging sheet 1 and the pull-out mechanism 38. As described above, when the cutter 33 operates and cuts the packaging sheet 1 stretched substantially straight, the packaging sheet 1 is surely cut and the cut portion is clean without wrinkles.

In addition, when the roll-shaped portion of the packaging sheet 1 is installed on the rotating member 13, even if the packaging sheet 1 falls between the rotating member 13 and the pedestal 35 of the cutter 33, Since it is supported by the sheet support member 47 (48), the packaging sheet 1 does not fall between the rotating member 13 and the pedestal 35.

[0010]

[Effect of device]

 As described above, when the packaging sheet is pulled out to a predetermined length, the packaging sheet will not wrinkle or have large wrinkles between the pull-out mechanism and the roll-shaped portion. This ensures that the cut part of the packaging sheet is clean without wrinkles. Therefore, the subsequent packaging operation and the subsequent extraction of the packaging sheet can be performed without any trouble, and the efficiency of the entire packaging device can be improved. Further, the packaging sheet is prevented from falling between the rotary member and the pedestal of the cutter, thereby preventing clogging of the packaging sheet and the like. Since the sheet support member has both the function of quickly stopping the roll-shaped portion of the packaging sheet and the function of preventing the packaging sheet from falling, the structure can be shared. This is an advantageous structure in terms of reducing the number of parts and simplifying the structure.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. (1) FIG. 1 shows the entire packaging apparatus of the present invention. First, the flow of one-time wrapping in this wrapping device will be described based on FIGS. 11 (a) to 13 (c) and FIGS. As shown in FIG. 11 (a), in a state in which one piece of the packaging sheet 1 cut into a predetermined length is placed on the packaging table 2, the worker opens the object to be packaged A into the opening 2 a of the packaging table 2. When it is dropped inside, the article A to be packaged is slightly wrapped in the packaging sheet 1 and falls into the lower support base 3 (step S1). After that, when a start switch (not shown) is operated (step S2), the support base 3 is lowered as shown in FIG. 11 (b) (step S5) and stopped at a predetermined position (step S5). Step S7). In this case, a plurality of rubber plate-shaped auxiliary throttle members 11 are provided below the opening 2a so as to surround the article A to be packaged, and the auxiliary throttle member 11 further squeezes the packaging sheet 1.

Next, as shown in FIGS. 11C and 12A, the pair of plate-shaped holding members 14 arranged on the lower side of the packaging table 2 advances toward the packaging sheet 1 side. (Step S9), the upper portion 1a of the packaging sheet 1 is sandwiched and narrowed down. As a result, the article A to be packaged is substantially completely wrapped in the packaging sheet 1. Thereafter, as shown in FIG. 12A, a pair of disc cutters 28 advances along the upper surface of the sandwiching member 14 to cut off the upper portion 1a of the packaging sheet 1 (step S10), and the injection nozzle 34 Compressed air is jetted, and the upper portion 1a of the packaging sheet 1 attached to the disc cutter 28 is blown off (step S11).

Next, as shown in FIG. 12B, the adhesive tape 4 cut to a predetermined length is placed over the upper end of the packaging sheet 1 and the end of the sandwiching member 14 (step S12). As shown in FIG. 12C, the adhesive tape 4 is pressed from the upper side by the sponge member 16 (step S13). Then, while the adhesive tape 4 is being pressed by the sponge member 16, as shown in FIG. 13 (a), the pair of holding members 14 are operated to be opened (step S14), and the sponge member 16 is again moved to the packaged object A side. The pressure is applied (step S15) to ensure that the adhesive tape 4 is in close contact with the packaging sheet 1.

After that, as shown in FIG. 13B, the support base 3 is laid down and operated, and the article A 1 to be packaged is discharged to the slide base 15 and collected (step S17). As described above, one packaging is completed, and the state of the packaged object A which has been packaged is shown in FIG. Then, the support base 3 is again moved up to the original position shown in FIG. 11A (step S18).

(2) Next, an elevating structure of the support base 3 in FIG. 11B will be described. As shown in FIG. 9, a first support frame 6 is attached to a pair of left and right guide rails 5 arranged below the opening 2a of the packaging table 2 so as to be vertically slidable. The support base 3 is supported by a second support frame 17 fixed to the upper portion of the support 6 via a shock absorbing spring 7. The support base 3 is formed by bending four sides of a flat plate having a plat shape in a plan view. An operation arm 8 swingable around the horizontal axis P1 is connected to the first support frame 6 by a pin and an elongated hole structure, and an operation cylinder that swings the operation arm 8 up and down. 9 are provided.

As shown in FIG. 9, a pair of holding arms 18 are swingably supported around the horizontal axis P3 at the left and right ends of the second support frame 17. A horizontally long sponge member 18a is attached to the tip of the holding arm 18, and a spring 19 for urging the left and right holding arms 18 to swing toward the central support base 3 side is provided. The first support frame 6 is provided with an operation arm 21 which is switched by the motor 20 between the vertical position shown in FIG. 9 and the horizontal position shown in FIG. The lower end of the holding arm 18 is connected by a link link 22.

(3) Next, it relates to a slide drive structure of the pair of holding members 14 in FIGS. 11 (C) and 12 (A). As shown in FIGS. 6 and 7, a round bar-shaped first guide rail 23 and a plate-shaped second guide rail 24 are provided below the packaging table 2 on both sides of the opening 2a. Then, a boss portion 14a is fixed to one end of the sandwiching member 14, the boss portion 14a is slidably fitted on the first guide rail 23, and the opposite lateral side portion 14b of the sandwiching member 14 is located at the second side. It is mounted on the guide rail 24 and bent downward. A bracket 25 is fixed to the boss portion 14a of one holding member 14, and a double-acting air cylinder 26 is connected to the bracket 25. A balance arm 27 is swingably supported around a vertical axis P4 of the fixed portion, and a roller 27a at one end of the balance arm 27 is inserted into a recess of the bracket 25. A link rod 29 is erected and connected between the other end of the balance arm 27 and the boss portion 14a of the other holding member 14.

With the above structure, when the air cylinder 26 in the expanded state is operated toward the contracted side as shown in FIGS. 6 and 7, the holding member 14 on the right side of the paper slides to the left side of the paper. As it moves, the balance arm 27 swings in the clockwise direction on the paper in conjunction with this operation. As a result, the link rod 29 is pulled rightward on the paper surface, and the other holding member 14 is slid rightward on the paper surface. Then, as shown in FIG. 8, the upper portion 1a of the packaging sheet 1 is narrowed down by the pair of holding members 14.

As shown in FIG. 7, a pair of auxiliary sandwiching members 30 that swing in a direction orthogonal to the sliding direction of the sandwiching members 14 are provided below the pair of sandwiching members 14. The pair of auxiliary holding members 30 are supported on the lower side of the holding member 14 so as to be swingable around the vertical axis P5 of the fixed portion. The auxiliary holding member 30 is provided with an elliptical long hole 30a, and the pair of rollers 14c provided on the back surface of the holding member 14 are inserted into the long hole 30a so that the auxiliary holding member 30 does not face downward. A guide plate 31 is provided to support the guide plate 31.

With this structure, when the air cylinder 26 begins to contract from the state shown in FIG. 7 and the pair of clamping members 14 start to approach each other, the pair of opened auxiliary clamping members 30 also interlock with the movement of the rollers 14c. , Start approaching each other. When the air cylinder 26 contracts to its stroke end, the holding member 14 and the auxiliary holding member 30 are almost completely closed as shown in FIG. 8, and the upper portion 1a of the packaging sheet 1 is narrowed down.

(4) After the support base 3 is lowered as shown in FIG. 11B, as shown in FIGS. 11C and 12A, the pair of sandwiching members 14 causes the packaging sheet 1 to move. The flow of control to narrow down is explained. As shown in FIGS. 6, 7 and 9, at a position slightly above the sandwiching member 14, one light emitting device 32a is arranged near one corner on the rear side of one sandwiching member 14. The light receivers 32b are arranged at a predetermined interval in the vicinity of the corners on the rear side of the other holding member 14 on the opposite side, and the one light emitter 32a and the four light receivers 32b emit light. The sensor 32 is configured. The light emitter 32a projects detection light with a spread over a predetermined range in the lateral direction (a range from the light receiver 32b at one end to the light receiver 32b at the other end in FIG. 7). As shown in FIG. 7, substantially the entire range of the opening of the sandwiching member 14 in the opened state is set so that the wide detection light from the light emitter 32a covers it. The packaging sheet 1 is transparent, and the intensity of the light detected by the optical sensor 32 is set so that it can pass through the packaging sheet 1.

As shown in FIGS. 14 and 15 and FIG. 11 (a), an operator opens the packaging target A on the packaging table 2 while the packaging sheet 1 is placed at a predetermined position on the packaging table 2. It is assumed that it is dropped into the hole 2a (step S1) and the start switch is operated (step S2). In this way, when the article A to be packaged is on the support base 3, at least two light receiving devices 32b among the light detected from the light emitting devices 32a to the four light receiving devices 32b shown in FIGS. When the detection light is blocked by the article A to be packaged, it is determined that the normal packaging operation is performed (step S3). As a result, the process proceeds to step S4, and the pair of holding arms 18 that have been operated to the open position as shown in FIG. 9 are operated to the holding position side (see the state in FIG. 10), and the sponge member 18a of the holding arm 18 moves. The package A is pressed against the lateral side of the package A, and the package A is held by the support base 3. Then, the descending operation of the support base 3 is started (step S5).

As described above, when the supporting table 3 is lowered while the object A to be packaged is held on the supporting table 3 by the holding arm 18, the object A to be packaged does not float up from the supporting table 3. Then, as the package A is reliably lowered, the auxiliary throttle member 11 sequentially presses the lateral side surface of the package A and the upper portion 1a of the packaging sheet 1 toward the center side. Is securely pressed against the lateral side surface of the article A to be packaged, and the upper portion 1a of the packaging sheet 1 is squeezed small.

As described above, the support base 3 is operated to descend, and the article A to be packaged passes the position of the holding member 14 as shown in FIG. In this case, in the four light receivers 32b shown in FIG. 7, when the detection light from the light emitters 32a is received by all the four light receivers 32b (step S6), the package A on the support base 3 is completely removed. It is determined that the lower side of the holding member 14 has been reached, and the lowering operation of the support base 3 is stopped at the position shown in FIG. 10 (step S7). Thus, when the support base 3 is stopped at the position shown in FIG. 10, the pair of holding arms 18 are slightly opened (step S8), and the pair of holding members 14 are advanced to move the upper portion 1a of the packaging sheet 1 upward. The object A to be packaged is wrapped in the packaging sheet 1 after being sandwiched (step S9).

Then, the disc cutter 28 cuts the upper portion 1a of the packaging sheet 1 (step S10), the jet nozzle 34 blows off the upper portion 1a of the packaging sheet 1 (step S11), and the adhesive tape 4 is attached. Attaching (step S12), pressing the adhesive tape 4 with the sponge member 16 (step S13), opening operation of the pair of holding members 14 (step S14), re-pressing the sponge member 16 (step S15), opening position of the holding arm 18. Operation (see state in FIG. 9) (step S16), discharge of the article A to be packaged from the support base 3 (step S17), and ascent to the original position of the support base 3 (step S18) are performed.

As described above, the packaging is performed once. When this packaging is completed, the packaging sheet 1 for the next packaging is pulled out and cut (step S19), and the first packaging is performed. Return to the state. When the next object to be packaged A is dropped into the opening 2a and the start switch is operated, the next packaging is performed from steps S3 and S4. By repeating the above operations, the packaging is continuously performed. You can

(5) Next, as shown in step S19 of FIG. 15, the configuration of each mechanism in the withdrawal of the packaging sheet 1 performed after the end of one packaging will be described. As shown in FIGS. 1, 2 and 3A, a transparent packaging sheet 1 is wound in a roll shape and supported by a pair of freely rotatable support rollers 13 (corresponding to a rotating member). A pedestal 35 is arranged below the cutter 33 described later. The pedestal 35 is provided with a plurality of receiving portions 35a protruding in a tongue shape, and the receiving portion 35a is provided with a concave portion 35b into which the cutter 33 is inserted. The receiving portion 35a is set at a position slightly lower than the base side of the receiving base 35.

Next, the cutter 33 and the like for cutting the packaging sheet 1 will be described. As shown in FIGS. 1 and 3 (a), a support frame 36 is slidably supported on an upper side of a pedestal 35, and a flat plate having a width wider than the lateral width of the packaging sheet 1 is supported on the support frame 36. The cutter 33 is fixed. The plate-shaped pressing member 37 having a width of about 1/2 of that of the packaging sheet 1 is provided on the front left and right sides of the cutter 33, and the rear left and right sides of the pressing member 37. A rubber material 37a is attached to the lower surface of each of the holding members 37, and each holding member 37 is provided so as to be vertically movable on the support frame 36 and urged downward by a spring 37b. As shown in FIG. 3A, the rubber material 37a of the pressing member 37 is set to project below the lower end of the cutter 33 when the support frame 36 is in the raised state.

Next, the pull-out mechanism 38 for pulling out the packaging sheet 1 onto the packaging table 2 will be described. As shown in FIGS. 1 and 3 (a), a pair of support plates 39 are slidably supported along guide rails 2b provided on both the left and right sides of the packaging base 2, and the left and right support plates are supported. One support shaft 40 is installed over 39, and five operation arms 41 are independently fitted to the support shaft 40 so as to be independently swingable, and a rubber plate 41a is attached to the upper surface of the tip of the operation arm 41. It is fixed. Then, on the upper side of the operation arm 41, five receiving portions 42 having substantially the same width as the operation arm 41 are supported and fixed. In this case, the receiving portion 42 of the pull-out mechanism 38 is set to be located slightly above the receiving base 35 on the cutter 33 side. Further, each operation arm 41 is provided with five springs 43 for urging the operation arm 41 toward the receiving portion 42 on the swing side.

The support shaft 40 is rotatably supported with respect to the support plate 39, an arm 40a is fixed to the left and right of the support shaft 40, and a single rod 40b is erected and fixed across the left and right arms 40a. ing. A link 45 is provided so as to span the fan-shaped gear 44 swingably supported by one support plate 39 and the one arm 40a, and a motor 46 for driving the fan-shaped gear 44 is provided. The state shown in FIG. 3 (a) is a state in which the motor 46 is driven to push up the rod 40b and pull down each operation arm 41 from the receiving portion 42. As will be described later, the motor 46 is driven in reverse. When the rod 40b is pulled down, the operating arms 41 are raised to the receiving portion 42 side by the urging force of the springs 43 and hold the packaging sheet 1 therebetween.

(6) Next, the operation flow of each mechanism for pulling the packaging sheet 1 onto the packaging table 2 for the next packaging operation in step S19 of FIG. 15 will be described. The state shown in FIG. 3 (a) is a state in which one packaging is completed, and the pulling-out mechanism 38 is moved to the cutter 33 side in order to pull out the packaging sheet 1 for the next packaging onto the packaging table 2. It is in a state of coming. Then, as shown in FIG. 3B, when the drawer mechanism 38 reaches the holding position, which is the position of the pedestal 35, and stops, the operation arms 41 and the receiving portions 42 of the drawer mechanism 38 cause the respective receiving arms of the pedestal 35 to receive. It enters between the parts 35a. Next, the motor 46 of the pull-out mechanism 38 is actuated to pull down the rod 40b, and the urging force of each spring 43 raises each operation arm 41 to the receiving portion 42 side, so that each operation arm 41 and receiving portion 42 The end portion 1b of the packaging sheet 1 is sandwiched between and.

Next, as shown in FIG. 4A, the pulling-out mechanism 38 starts to move to the right in the drawing with the end portion 1 b of the packaging sheet 1 being held, and the packaging sheet 1 is moved onto the packaging table 2. Start withdrawal. In this case, as shown in FIGS. 3A and 2, a support plate 47 (corresponding to a sheet support member) is vertically swingably supported around the horizontal axis P2 at the end of the pedestal 35. . The support plate 47 has a width substantially the same as that of the support roller 13 and a width larger than that of the packaging sheet 1, and a friction plate 48 made of urethane rubber (corresponding to a sheet support member) is fixed to the tip. The support plate 47 is lightly urged downward by a spring (not shown), and the tip of the friction plate 48 is in contact with the outer surface of one of the support rollers 13.

Accordingly, when the packaging sheet 1 is pulled out by the pulling-out mechanism 38, the rotation of the support roller 13 is slightly braked by the contact action of the friction plate 48, the rotation of the roll-shaped portion of the packaging sheet 1 and the packaging sheet 1 A little braking is applied to the drawer. Therefore, the packaging sheet 1 is pulled out in a taut state without being loosened in the middle. The friction plate 48 and the support plate 47 prevent the packaging sheet 1 from falling between the support roller 13 and the pedestal 35.

As shown in FIG. 4B, the packaging sheet 1 is transparent, but the marks 1c are printed along the longitudinal direction of the packaging sheet 1 at predetermined intervals corresponding to the type of the article A to be packaged. ing. Then, as shown in FIG. 1, a frame 49 fixed to the packaging base 2 is provided with a reflection type optical sensor 50 including a light emitting device and a light receiving device. With the above structure, the packaging sheet 1 is pulled out, and as shown in FIG. 4B, the mark 1c of the packaging sheet 1 reaches the position of the optical sensor 50, and the detection light from the light emitter of the optical sensor 50 is detected. When is reflected by the mark 1c and detected by the light receiver of the optical sensor 50, the drawer mechanism 38 is temporarily stopped at that position (corresponding to the drawer position).

In this case, as shown in FIGS. 4B and 2, the tip of the friction plate 48 comes into contact with the outer surface of one of the support rollers 13 to rotate the roll-shaped portion of the packaging sheet 1 and the packaging sheet. Since a slight amount of braking is applied to the drawer of 1, the roll-shaped portion of the packaging sheet 1 and the support roller 13 are immediately stopped at the same time when the drawer mechanism 38 is stopped. This prevents the packaging sheet 1 from waviness or wrinkling between the roll-shaped portion of the packaging sheet 1 and the pull-out mechanism 38.

Next, as shown in FIG. 4B, the support frame 36 provided with the cutter 33 and the pressing member 37 is lowered. In this case, as shown in FIG. 4B, the rubber material 37a of the pressing member 37 projects below the lower end of the cutter 33. The individual pressing member 37 presses and holds the packaging sheet 1 against the receiving portion 35 a of the receiving table 35. Next, the cutter 33 enters the recess 35b of the receiving portion 35a and cuts the packaging sheet 1 at a stretch.

When the cutting of the packaging sheet 1 is completed as described above, the support frame 36 is moved up to the original position, and as shown in FIG. 5, the drawer mechanism 38 is moved to the right side of the drawing and stopped. The center of the cut packaging sheet 1 is brought to the position of the opening 2a of the packaging base 2 (see FIG. 1). After that, each operation arm 41 of the drawer mechanism 38 is pulled down from the receiving portion 42 to separate the end portion 1b of the packaging sheet 1, and one packaging sheet 1 cut into a predetermined length has a predetermined length on the packaging table 2. Placed in position.

In this case, as shown in FIGS. 5 and 2, a plurality of convex portions 51 are fixed to the end of the packaging table 2. The surface of the convex portion 51 is subjected to a rough anti-slip treatment, and when the pull-out mechanism 38 stops at the position shown in FIG. It is set so that the convex portion 51 is located. As a result, even if the operation arm 41 of the drawer mechanism 38 is pulled down at the position of FIG. 5 and the end 1b of the packaging sheet 1 is released, the end 1b of the packaging sheet 1 rides on each convex portion 51. There is. Therefore, even if air enters between the packaging sheet 1 and the packaging table 2 and the packaging sheet 1 floats up, the packaging sheet 1 does not move from that position due to the contact action with the convex portion 51. is there.

(7) The explanations in the above paragraphs (5) and (6) describe the normal packaging and the withdrawal of the packaging sheet 1 after this packaging. Next, the packaging sheet 1 is placed on the packaging table 2. The state in which the packaging sheet 1 is pulled out from the initial state in which it is not placed will be described. As shown in FIG. 14, when the packaging sheet 1 is pulled out from the initial state, the start switch is operated without dropping anything into the opening 2a of the packaging base 2 (step S2). In this case, since there is nothing in the support base 3 of FIG. 9, the detection light from the light emitter 32a of the optical sensor 32 is received by all of the four light receivers 32b and detected (step S3) (support). (It corresponds to a state in which the packaged object A on the table 3 is not detected). Therefore, in such a case, the process proceeds from step S3 to step S20, and as described in (5) above, the pulling mechanism 38, the cutter 33, etc. are operated to cut the packaging sheet 1 into a predetermined length. Is placed at a predetermined position on the packaging table 2.

When the first packaging sheet 1 is placed on the packaging table 2 as described above, as shown in the description in the above (4), FIGS. 14 and 15 and FIG. Is dropped into the opening 2a of the packaging table 2 (step S1), and the start switch is operated (step S2). In this way, when the object A to be packaged is on the support base 3, among the detection lights from the light emitting devices 32a shown in FIGS. 7 and 9 to the four light receiving devices 32b, at least two light receiving devices 32b are detected. When the detection light is blocked by the article A to be packaged, it is determined that the article A to be packaged is present on the support base 3 and is in a normal packaging state (step S3). As a result, the process proceeds to step S4 and the packaging is performed, and when one packaging is completed, the packaging sheet 1 is then drawn out to the packaging table 2 in step S19.

[Other Embodiments] The structure near the disk cutter 28 and the injection nozzle 34 in FIG. 12 (a) may be configured as shown in FIG. 16 (a) (b). As shown in FIGS. 16 (a) and 16 (b), the first arm 52 and the second arm 53 whose ends are slightly bent are supported by a fixed portion of the packaging device so as to be swingable left and right, and The arms 52 and 53 are connected by a link 54, and a spring 55 that biases the first and second arms 52 and 53 to the right side of the drawing is attached. As a result, as the disc cutter 28 advances, the upper portion 1a of the packaging sheet 1 sandwiched between the disc cutters 28 is pushed forward by the first arm 52, after which compressed air is ejected from the injection nozzle 34. The upper part 1a of the packaging sheet 1 which has been jetted and cut is reliably blown off.

Although the packaging sheet 1 is sealed with the adhesive tape 4 in the above-mentioned embodiment, the packaging sheet 1 is heated to weld the packaging sheet 1 after cutting the upper portion 1 a, and the packaging sheet 1 is then sealed. The present invention may be applied to a packaging device that performs the above sealing. Further, instead of the disc cutter 28 as shown in FIGS. 12 (a) and 16 (a) (b), the upper portion 1a of the packaging sheet 1 sandwiched by the sandwiching members 14 is heated by a heater (not shown). The present invention may be applied to a packaging device that is heated and melted.

In the claims of the utility model, reference numerals are added for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a packaging device viewed from above.

FIG. 2 is a perspective view showing a pedestal, a support roller, and a convex portion in the packaging device viewed from above.

FIG. 3 is a side view showing a state in which the pull-out mechanism moves to the holding position side and holds the end portion of the packaging sheet.

FIG. 4 is a side view showing a state in which the drawing mechanism starts drawing the packaging sheet from the state of FIG. 3 and stops at the drawing position, and the cutter cuts the packaging sheet.

FIG. 5 is a side view showing a state in which the drawing mechanism moves the cut packaging sheet after the state of FIG. 4 to a predetermined position on the packaging table.

FIG. 6 is a perspective view showing a slide drive structure of a pair of holding members, an arrangement state of a light emitter and a light receiver of an optical sensor.

FIG. 7 is a plan view showing a slide driving structure of a pair of holding members, an arrangement state of a light emitter and a light receiver of an optical sensor.

8 is a plan view showing a state in which a pair of holding members are closed and operated from the state shown in FIG.

FIG. 9 is a front view of the vicinity of the support table showing a state in which an object to be packaged is put into an opening of the packaging table and dropped on the support table.

FIG. 10 is a front view showing a state in which the left and right holding arms hold the article to be packaged and the support base is lowered from the state shown in FIG. 9;

FIG. 11 is a perspective view showing the flow of packaging from the insertion of the packaged object into the opening to the narrowing down of the packaging sheet by the sandwiching member.

FIG. 12 is a perspective view showing the flow of packaging from the cutting of the upper portion of the packaging sheet to the pressing of the adhesive tape by the sponge member.

FIG. 13 is a perspective view showing the flow of packaging from the opening operation of the holding member to the discharging of the packaged article and a state in which the packaging is completed.

FIG. 14 is a diagram showing a flow of the first half of control of the entire packaging.

FIG. 15 is a diagram showing a latter half flow of control of the entire packaging.

FIG. 16 is a perspective view around a disk cutter in another embodiment.

FIG. 17 is a side view showing an operating state of the drawer mechanism in the conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging sheet 1b Edge of packaging sheet 2 Packaging table 2a Opening of packaging table 13 Rotating member 33 Cutter 35 Receptor 38 Drawing mechanism 47,48 Sheet support member A A Packaged object

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Satoru Ito 64 No. Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A packaging sheet (1) cut into a predetermined length.
Opening hole (2) for placing the spherical object to be packaged (A)
The packaging table (2) having a) is provided, and when the object to be packaged (A) is dropped into the opening (2a) from above, the packaging table (2) is placed on the outer edge of the opening (2a). Packaging sheets for (1)
A packaging device configured such that the object to be packaged (A) is wrapped in a packaging sheet (1) by squeezing the packaging sheet (1), and the packaging sheet (A) wound around a rotatable member (13) in a roll shape 1) Put this packaging sheet (1)
While rotatably supporting the roll sheet around its axis and rotating the roll-shaped portion of the packaging sheet (1) and the clamping position for clamping the end (1b) of the packaging sheet (1),
A pulling-out mechanism (38) reciprocally movable over a pulling-out position for pulling out the sandwiched packaging sheet (1) onto the packaging table (2) by a predetermined length, and a package pulled out to a predetermined length by the pulling-out mechanism (38). A cutter (33) for cutting a predetermined position on the roll-shaped portion side of the sheet (1), and a packaging sheet (1) below the cutter (33).
Is extended from the pedestal (35) for supporting the rotating member (13) to prevent the packaging sheet (1) from falling, and its tip contacts the outer surface of the rotating member (13). A packaging device provided with sheet support members (47) and (48) for giving resistance to the rotation of the rotating member (13).