JPH0464983B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an adhesive tape pasting device installed in a packaging machine or the like for sealing the edges of folded wrapping paper.

(Prior art) The present inventor is
(filed on March 1), we proposed an automatic adhesive tape laminating and cutting device. This device is installed during the process in which the objects to be bonded are automatically conveyed, and when the pair of rolls for feeding the tape are positioned in the tape bonding surface area, it automatically moves the tape by following the movement of the objects to be bonded. The tape can be automatically cut as soon as the required length of bonding is completed. In addition to the characteristic of a compact structure, such a device can automatically feed, paste, and cut the tape, and due to its convenience, it is preferably used for sealing the edges of wrapping paper in packaging devices. I've been

(Problems to be Solved by the Invention) However, since the above-mentioned device is designed to laminate the tape by following the movement of the objects to be bonded during the conveyance process, the objects to be bonded are in a stationary state. In some cases, it can no longer perform its function, and the mechanism of the device is still somewhat complex, as multiple solenoid valves are required to swing the tape stand or move the cutter blade forward and backward. I couldn't deny it.

The present invention has been made in view of the above, and is an extremely compact and highly compact product that enables automatic sealing, etc. by smoothly laminating an adhesive tape to a stationary object and simultaneously cutting the adhesive tape. The present invention aims to provide a new adhesive tape laminating device.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained based on the attached embodiment drawings. Fig. 1 is a front view showing one embodiment of the adhesive tape laminating apparatus of the present invention;
3 and 4 are similar views showing the operating state of the same apparatus, and FIGS. 5 to 8 are similar views to FIGS. 1 to 4 of other embodiments. That is, the adhesive tape laminating apparatus of the present invention includes a frame 1, a vertical slide member 2 that is locked to the frame 1 so as to be slidable back and forth, and a vertical slide member 2 that is attached to the lower part of the slide member 2 so as to be able to swing vertically. A crank 3 that is pivoted, a roll support plate 4 that is pivoted to the other end of the crank 3 and can swing back and forth about this pivot point 40, and a roll support plate 4 that is pivoted on the plate surface of the support plate 4. an adhesive tape-wrapped roll holding shaft 41, first and second tape short piece pressing rolls 42, 43 spaced apart from each other on the same plate surface of the support plate 4, and an adhesive tape-wrapped roll holding shaft 41 attached to the frame 1. Cutting blade for tape cutting 5
When the slide member 2 moves forward, the pressing rolls 42 and 43 are pressed together with the short pieces of tape against the surface to be bonded, while when the slide member 2 moves backward, the pressing rolls 42 and 43 are pressed against the surface to be bonded. The main feature is that the support plate 4 includes a cam mechanism 6 that restricts the back and forth swinging of the support plate 4 so as to separate from the support plate 4.

(Function) The procedure for laminating adhesive tapes using the adhesive tape laminating apparatus having the above configuration will be briefly described.

First, as shown in FIGS. 1 and 5, the adhesive tape-wrapped roll T is attached to the holding shaft 41, and its feeding piece _T1 is hung down along the circumference of the first pressing roll 42. Next, when the slide member 2 is slid in the direction of arrow X, the second pressing roll 43 rolls on the object A to be bonded.

When the slide member 2 moves further forward, the support plate 4 is regulated by the cam mechanism 6 and the shaft attachment point 4
0 as a fulcrum, the first and second pressing rolls 42 and 43 are pressed against the surface of the object A, and the first pressing roll 42 causes the tape feeding piece T ₁ to be stuck. It is pressed and pasted onto the surface of object A. At the same time, the support plate 4 is allowed to swing up and down via the crank 3 with the pivot point 30 as a fulcrum, so that the weight of the support plate ₄ ensures that the tape ends T1 are bonded together by the rolls 42 and 43. It is said that

When the slide member 2 is temporarily stopped in this state and then starts sliding in the direction of the arrow Y, immediately after this sliding starts, the first pressing roll 4
2 rolls on top of the tape feeding piece T ₁ pasted,
Due to the continued sliding, the support plate 4 swings in the opposite direction to the above, and the first pressing roll 42 rises above the surface of the object to be laminated A, but the second pressing roll 43 moves onto the tape feeding piece _T1. is rolled to press the feeding piece T ₁ onto the surface of the object A to be laminated. At this time, the tape feeding piece T ₁ is pressed and bonded to the surface of the object A by rolling in the Y direction of the second pressing roll 43 and is fixed, and a new tape feeding piece T 1 is fed from the winding roll T by that amount. Piece
T ₁ is rolled out and laminated one after another (see Figures 4 and 8).

When the slide member 2 moves further backward, the cutter blade 5 cuts the tape feeding piece T ₁ between the first and second pressing rolls 42 and 43, and the continuous rolling of the second pressing roll 43 causes the tape to be cut off. The cut ends are pressed against the surface of the object A to be bonded together. The bonding length of tape feeding piece _T1 is:
This is determined by the cutting position of the cutter blade 5, but if the blade 5 is adjustable in the front and rear positions as in the embodiment, the desired length can be laminated by setting the blade 5 to an appropriate position in advance. Ru.

In this way, when the next object to be laminated A is conveyed to a predetermined position directly under the frame, similar lamination is performed by the above operation, and this is repeated to efficiently lather the adhesive tape one after another. I will go.

(Example) Hereinafter, the present invention will be explained in further detail with reference to Examples.

(Example 1) In FIGS. 1 to 4, the slide member 2 is engaged with two slide rods 21, 21 installed vertically in parallel with the frame 1, and a motor is mounted on the upper back surface of the slide member 2. 22 is fixedly installed, and the slide member 2 can be slid back and forth by the engagement between a pinion gear 23 fixed to the drive shaft of the motor 22 and a rack 24 installed on the frame 1 and the driving force of the motor 22. It is said that

In addition, the front end surface (the right end surface in the figure) of the support plate 4 is a cam surface 45, and the front end of the frame 1 is provided with a cam roll 61, and the cam roll 61 and the cam surface 4 are provided at the front end of the frame 1.
5 constitutes a cam mechanism 6. Frame 1
A cutter blade 5 is horizontally attached to the rear end so that its position can be adjusted back and forth, and its cutting edge 51 is inserted between the first and second adhesive tape pressing rolls 42 and 43 in the state shown in FIG. It is oriented to face and as close as possible to the upper first roll 42. The shape of the cutting edge 51 is preferably a mountain-like shape with a sharp tip as disclosed in the above-mentioned prior application.

On the same plate surface of the support plate 4 (on the near side in FIG. 1), from above, there is an adhesive tape winding roll holding shaft 41, an adhesive tape backlash prevention roll 44, and first and second adhesive tape pressing rolls 42, 43. are arranged in this order, and the reverse prevention roll 44 and the first and second pressing rolls 42, 43 are arranged in a substantially vertical direction as shown in FIG. The second pressing roll 43 has a larger diameter than the first pressing roll 42, and both of these rolls 42 and 43 are capable of forward and reverse rotation. As shown in the figure, an adhesive tape-wrapped roll T is fitted and held on the tape-wrapped roll holding shaft 41 with its glued side facing backward (left side in the figure), and the tape feeding piece T ₁ is attached to the backlash prevention roll. 44 and the first pressing roll 42. Further, the return prevention roll 44 is shaft-mounted via a one-way clutch bearing 441 so as to be allowed to rotate only in the direction of arrow S in FIG.

The support plate 4 is elastically biased diagonally upward by a tension spring 46 tied to the front part of the frame body 1.
In the state shown in FIG. 1, the rolls 44, 4
Slide member 2 so that 2 and 43 are lined up in a substantially vertical state.
The cam surface 45 is configured to abut against a locking protrusion 25 provided on the holder. On the other hand, the support plate 4 is pivoted 40 at its lower end to the front end of the crank 3 in conjunction with the second pressing roll 43,
Further, the rear end of the crank 3 is pivoted 30 to the slide member 2, and the relationship between these pivots 40 and 30 allows the support plate 4 and the crank 3 to swing back and forth or up and down in a plane parallel to the slide member 2. maintained in the state. Further, a protrusion 31 is provided at the rear lower part of the frame body 1, and when the slide member 2 retreats, the crank 3 rides on the protrusion 31 and the support plate 4 slightly approaches the surface of the object A. The second pressing rolls 42 and 43 are designed to automatically separate from each other.

(Example 2) In FIGS. 5 to 8, a cam groove 62 is provided between the support plate 4 and the slide member 2, with a widening part 621 at the front and a horizontal narrow part 622 at the rear. On the other hand, two cam rollers 47 and 48 loosely inserted into the cam groove 62 are pivotally attached to the back surface of the support plate 4. On the surface of the support plate 4, an adhesive tape-wrapped roll holding shaft 41, a reverse prevention roll 44, and first and second pressing rolls 42 and 43 are arranged, as in the first embodiment. Tape payout piece fed out from winding roll T
T ₁ is semi-wound around the first pressing roll 42 .

In the state shown in FIG. 5, the cam rolls 47, 48
are loosely inserted and held in the narrow part 622 of the cam groove 62 in a horizontal state, and when the slide member 2 slides forward from this state, the cam rolls 47 and 48 move into the narrow part 622 of the cam groove 62.
rolls forward along the lower edge 623 of. When the front cam roll 47 comes into contact with the front edge 624 of the cam groove 62, it moves upward along the front edge 624. Due to the regulation between the cam roll 47 and the cam groove 62, the support plate 4 swings rearward about the pivot point 40 and the crank 3 pivots about the pivot point 30.
The rotation of the first and second
The pressing rolls 42 and 43 are aligned horizontally and pressed together with the tape end piece _T1 onto the surface of the object A to be laminated (see FIG. 6).

When the slide member 2 starts to move backward from this state, the first pressing roll 42 rolls backward on the pasted tape end piece _T1 , and by this action the tape is fed out and successively pasted. Further, the second pressing roll 43 that follows ensures that the tapes are bonded together. (See Figure 7).

When the slide member 2 continues to slide rearward, the cam roll 47 comes into contact with the rear edge 625 of the widened portion 621 of the cam groove 62, and this action causes the support plate 4 to swing forward about the pivot point 40 as a fulcrum. In both cases, the crank 3 rotates around the pivot point 30 and tilts (see Fig. 8). As a result, the first pressing roll 42 and the second pressing roll 43 are in a vertical state, and by the subsequent backward movement, the second roll 43 rolls on the tape and presses it, and the rolls 42, 43 The cutter blade ₅ cuts the tape end piece T1 stretched between the tape ends. A raised portion 6 is provided at the rear end of the lower edge 623 of the cam groove 62.
26 (which is adjustable in its longitudinal position together with the cutter blade 5) is formed, and the cam roll 4
When 7 and 48 try to get on this raised part 626, the entire support plate 4 is pushed upward by the rotation of the crank 3 around the pivot point 30, and 43 is separated from the surface of the object A. Then, as shown in FIG. 5, it waits for the next bonding. Since the other configurations are substantially the same as those of the first embodiment, corresponding reference numerals are simply given and detailed explanation thereof will be omitted here.

Note that the slide member 2 is not limited to the above embodiment.
Although a rack and pinion mechanism using a motor as a driving source is employed as the sliding mechanism, it is not excluded that other suitable driving mechanisms may be employed. It goes without saying that other modifications may be made without departing from the invention.

(Effects of the invention) As described above, the adhesive tape laminating device of the present invention has the following effects:
With the above configuration, tape bonding and cutting of a stationary object to be bonded is automatically performed. Moreover, since this function is performed by the back and forth sliding of the slide member 2 and the action of the cam mechanism 6 associated therewith, the structure is extremely simple. If this is placed at an appropriate position in the packaging device and the sliding movement of the slide member 2 is electrically or mechanically associated with the drive mechanism of the packaging device, packaging and sealing with tape can be done in a series. The action will be performed automatically and efficiently. The device of the present invention having such excellent functions is extremely useful.

[Brief explanation of drawings]

FIG. 1 is a front view showing one embodiment of the adhesive tape laminating apparatus of the present invention, FIGS. 2, 3, and 4 are similar views showing the operating state of the apparatus, and FIGS. 5 to 8 are similar to FIGS. 1 to 4 of other embodiments. Explanation of symbols, 1...Frame body, 2...Slide member, 3...Crank, 4...Support plate, 41...Tape-wrapped roll support shaft, 42, 43...First and second adhesive tapes Pressing roll, 5... cutter blade, 6... cam mechanism.

Claims (1)

[Claims] 1 A frame body 1, a vertical slide member 2 that is locked to the frame body 1 so as to be slidable back and forth, and the slide member 2
Crank 3 is pivotally attached to the bottom of the
, a roll support plate 4 which is pivotally attached to the other end of the crank 3 and is able to swing back and forth about the pivot point 40, and an adhesive tape winding which is pivotally supported on the plate surface of the support plate 4. A roll holding shaft 41, first and second tape short piece pressing rolls 42, 43 spaced apart from each other on the same plate surface of the support plate 4, and a cutter blade 5 for cutting the adhesive tape attached to the frame 1. When the slide member 2 moves forward, the pressing roll 4
A cam mechanism that presses the tape strips 2 and 43 together with the tape strips against the surface to be bonded, and controls the back and forth swinging of the support plate 4 so that when the slide member 2 moves backward, the pressing rolls 42 and 43 are separated from the surface to be bonded. An adhesive tape laminating device consisting of 6.