JPS6238218B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a can sealing machine using adhesive tape.

When packaging confectionery, seaweed, tea, etc. that are extremely sensitive to moisture, place them in tin cans, plastic cans, etc. and seal the boundary between the can body and the lid, or the seam of the can, with adhesive tape to completely prevent moisture. things are being done. Various types of can sealing machines have been known that automatically apply this adhesive tape, but a can is placed on a rotating platform and the adhesive tape is applied to the can while rotating the can. Most of them are made by adhering to the seam of the can, and with this method it is necessary to align the center of the can with the center of the rotating platform, and conventional ones do not have a positioning device to align this center. Or, even if it were, it would be large-scale, and the device would be complicated and the production cost would be high.

In view of the above points, the present invention is a can sealer that has a simple structure, can reliably and efficiently place an item to be sealed on a rotating base, operates effectively at any time, and can automatically adhere adhesive tape to the seams of cans. The purpose is to supply a machine, and its gist is that it is equipped with a stopper and is driven to rotate at least 1.5 revolutions, and if it rotates more than that, the rotation increases by one revolution. A rotating platform, a can moving device that supplies cans onto the platform, a can holding device that clamps and holds the cans between the rotating platform, and a device that feeds and applies adhesive tape to the seams of cans. The two stoppers are provided at symmetrical positions with respect to the center of the base plate, and their tips protrude from the top surface of the base plate, but are directed toward the inside of the base plate. The can sealing machine is characterized in that the can sealing machine is provided so that its tip is positioned below the upper surface of the base only when pressed by force.

Next, an example of the can sealing machine of the present invention will be explained in detail with reference to the drawings. FIG. 1 is a plan view schematically showing the can sealing machine of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a plan view showing a rotary base plate and a can holding device, and FIG. The figure is a partial sectional view taken along the line of FIG. In the figure, 1 is a can holding device, which includes a metal disc 101, a can holding rubber plate 102, a shaft 103, collars 104, 109, an arm 105, a support 106,
It is formed by a handle 107 and a spring 108. The metal disk 101 has a presser rubber plate 102 laminated on its lower surface, and is fixed to a shaft 103 via a collar 109 on its upper surface. The shaft 103 is inserted into a hole drilled in the arm 105, and a collar 104 is fixed to the upper end of the shaft 103 to prevent it from falling. Reference numeral 105 denotes an arm that rotatably supports the shaft 103 and also moves the metal disc holder 101 up and down.
05 is moved up and down according to the rotation of an eccentric cam (not shown) that rotates in contact with the lower end of the support 106, and the interval between the up and down movements can be adjusted by a handle 107. .

108 is a spring fitted to the shaft 103, and the vertical movement of the arm 105 is controlled by the presser metal disc 1.
It serves as a cushion when transmitting information to 01.

In the figure, 2 is a disc-shaped rotary base that rotates intermittently by driving force.A can is placed on the top surface of the base and the can is rotated so that adhesive tape can be attached to the seam of the can. and is driven to rotate at least 1.5 revolutions, and 1.5 revolutions if it rotates more than that.
The rotation is increased with each rotation. 201
is the axis of the base plate 2. Further, 203 is a drive motor, which rotates the shaft of the base plate 2 through the reducer 202. Guide plates 204, 204 are provided on the surface of the base plate 2, and guide grooves for the can are formed by the guide plates 204, 204. Further, 205 and 206 are rectangular holes provided in the base plate 2, and are provided symmetrically with respect to the center point of the base plate 2. and holes 205 and 20
6 and the stoppers 21 and 22 are inserted into the hole 20.
5,206 on the outside side. The stoppers 21, 22 include blankets 207, 208, shafts 209, 210, 219, 220, arm springs 211, 212, arms 213, 214, spring clasps 215, 216, and stopper rollers 217,
218. blanket 20
7, 208 are attached to the lower surface of the base plate 2, and shafts 209, 210 are fixed to the blankets 207, 208. Arms 21 are attached to the shafts 209 and 210.
3 and 214 are rotatably mounted, and arm springs 211 and 212 are also mounted. One end of the arm springs 211, 212 is in contact with the lower surface of the base plate 2, and the other end is in contact with spring clasps 215, 216 fixed to the arms 213, 214, so that the stoppers 21, 22 are not normally It is erected substantially perpendicularly to the base plate 2, and is rotated inward of the base plate 2 by an inward force of the base plate, but returns to its original state when the force is released. Also arm 2
Shafts 219 and 220 are attached to the tips of the rollers 13 and 214, and the stopper rolls 2
17 and 218 are rotatably mounted. The stopper rolls 217 and 218 are provided to protrude from the upper surface of the base plate 2, and the stopper rolls 217 and 218
1 and 22 are attached to the outside of the holes 205 and 206, so the outer walls of the holes 205 and 206 act as stoppers, preventing them from rotating outward.

3 in the figure is a can moving device, which includes a can supply conveyor motor 300, a drive transmission chain 301, a conveyor belt 302, and cylinders 303, 30.
6, a can supply bar, 304, a can stopper 305, and a lever 306. The conveyor belt 302 is a motor 30 for a can supply conveyor.
0 and a drive transmission chain 301 to rotate in the direction of arrow A. 303 is a cylinder for moving cans that moves in the left-right direction in FIG. 305 is installed. 306 is a can delivery cylinder to which a can delivery lever 307 is attached; it is attached to the upper right side of the can moving cylinder 303, and is moved along with the movement of the can moving cylinder 303; The delivery lever 307 can be operated independently of the movement of the can moving cylinder 303. And these cylinders 303 for moving cans, cylinder 3 for sending cans.
Preferably, 06 is operated using air pressure or fluid pressure such as oil.

400 is a tape reel to which adhesive tape is attached. 401 is an adhesive tape, and 402 is a guide roller group for feeding out the adhesive tape 401.

Reference numeral 403 denotes an adhesive tape application roller that adheres the adhesive tape 401 to the seams of cans, and in combination with an adhesive tape cutter (not shown), it is possible to freely apply and cut the adhesive tape. . A tape reel 400, a group of guide rollers 402, a sticking roller 403, and the like form a sticking device 4 that feeds out and sticks the adhesive tape.

Next, the operation of the can sealing machine of the present invention will be explained according to the above embodiment. FIG. 5 is a partial cross-sectional view showing the state in which the can is supplied onto the base plate 2, and FIG. 6 is a partial cross-sectional view showing the state in which the can is taken out from the base plate 2 after being sealed with adhesive tape. It is. In FIG. 1, cans 5 fed to a can supply conveyor belt 302 are transported by the conveyor belt 302 in the direction of arrow A, and are temporarily stopped when they hit a can stopper 305.

The can moving cylinder 303 operates in the direction of arrow B in response to a signal from the can stopper 305 and moves the can supply bar 304 in the direction of arrow B.
The upper one can 5 is transferred toward the base plate 2 for can rotation. As shown in FIG. 5, when the can 5 is transferred by the can supply bar 304, the weight of the can 5 presses the stopper 21 inward, and the stopper 21
It is rotated until it is fitted into the inside of 15. Therefore, the cans 5 are completely transferred on the base plate 2 without being obstructed by the stopper 21 until they come into contact with the stopper 22. As soon as one end of the can 5 contacts the stopper 22, the can supply bar 304 stops.

At the same time as the can supply bar 304 is stopped, the can delivery lever 307 is moved to the can delivery cylinder 3.
06 starts to retract. After the retraction of the can delivery lever 307 is completed, the can moving cylinder 303 starts moving to the left.

When the can supply bar 304 separates from the side of the can 5, a rotation signal for the base plate 2 is output and the drive motor 2
The base plate 2 is rotated 1.5 times by the driving force of 03. At the same time, the drive motor 203 operates the eccentric cam (not shown) of the can holding device 1 to cause the arm 1 of the can holding device 1 to operate.
05 and the support column 106, the can 5 is held under pressure by the can holding device 1 and the base plate 2 and rotated. On the other hand, adhesive tape reel 40
The adhesive tape 401 that has been fed out from 0 through the guide roller 402 is attached to the seam 5 of the rotating can 5.
01 is pasted and cut by an adhesive tape applying roller 403 and an adhesive tape cutter (not shown) to seal it.

At this time, when the base plate 2 rotates more than 1.5 rotations, the rotation increases by 1 rotation, so
When sealing is completed, the two stoppers 21 and 22 are always located parallel to the direction in which the can is transported, as shown in FIG. 6, so that the next sealing operation can also be started at these stopper positions. Further, when the sealing is completed and the rotation of the base plate 2 is stopped, an eccentric cam (not shown) is activated, and the arm 105 and the support column 106 are closed.
is pushed upwards to its original position.

The can moving cylinder 303 continues to operate while the base plate 2 is rotating, and the can supply bar 304 returns to its original position. At the same time, the can delivery cylinder 306 attached to the can moving cylinder 303 returns to its original position with the can delivery lever 307 retracted, and at the same time it returns, the can delivery lever 307 is pushed out and the can delivery cylinder 306 is returned to its original position. Similar to supply bar 304, it is waiting for the next signal.

When the rotation of the base plate 2 stops and the next can reaches the can stopper 305, which is the supply position, the cylinder 303 for moving the can is activated, and the lever 3 for can delivery is activated.
07 pushes the sealed can 5 on its side in the right direction of arrow B and sends it out. and the next can at the same time
It is supplied in the same manner as the third can 5, and this process is repeated thereafter.

The can sealing machine of the present invention has a rotating base and a can holding device that clamps and holds a can between the base. Since the stopper is provided so that the tip is positioned below the top surface of the base only when it is pressed by an inward force, the supplied can is held by the stopper and the can is Since the can is held under pressure by the holding device and the base, the can is accurately held at a predetermined position on the base. Moreover, since the can is firmly held by the can holding device, the base plate, and the stopper, the can does not shift even if the rotation speed of the can is increased, and the sealing ability is improved.

Furthermore, since the structure is extremely simple, it can be manufactured at low cost, is easy to adjust, operates reliably, and has fewer failures.

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing the can sealing machine of the present invention, FIG. 2 is a front view of the same as above, FIG. Figure 5 is a partial sectional view taken along the line, Figure 5 is a partial sectional view showing the state in which the can is fed onto the base plate, and Figure 6 is the state in which the can is taken out from the base plate after being sealed with adhesive tape. FIG. 1... Can holding device, 2... Base plate, 21, 22...
... Stopper, 205, 206 ... Hole, 3 ... Can moving device, 4 ... Sticking device, 5 ... Can, 501 ...
...The seam of a can.

Claims (1)

[Claims] 1. Two stoppers are provided, and at least
A rotating platform is driven to rotate by 1.5 rotations, and the rotation increases by one rotation when rotating more than that, and a can moving device that supplies cans onto the platform; It consists of a can holding device that clamps and holds the can with the base plate, and a pasting device that feeds and sticks the adhesive tape to the seam of the can, and the two stoppers are located at symmetrical positions with respect to the center of the base plate. The tip of the base protrudes from the top surface of the base plate, but only when pressed by an inward force of the base plate, its tip portion is positioned below the top surface of the base plate. A can sealing machine characterized in that it is installed so as to be sealed. 2. The can sealing machine according to claim 1, wherein two stoppers are attached symmetrically with respect to the center point of the base plate.