JPS6018324Y2 - Extrusion mechanism in automatic packaging equipment - Google Patents

Description

[Detailed description of the invention] The present invention is an automatic packaging device that automatically wraps workpieces containing various articles with stretchable sheets such as plastic. This relates to an extrusion mechanism for transporting to a process.

As for the above-mentioned automatic packaging device, the applicant had previously filed a patent application filed in 1983-
12742, but the extrusion mechanism used here connects both ends of the base to chains so that it can move back and forth, and has a cylinder in the center of the rear of the base that faces forward. In both cases, an extrusion plate is connected to the tip of the cylinder, a presser roller and a folding roller are supported in the front of the base, and a stopper is provided below and in front of the table on which the work is placed. and
After the sheet is folded to the rear of the workpiece by the presser roller and the folding roller as the base moves forward, the stopper is moved down to release this stop and the cylinder is operated to push the workpiece to the next process by the extrusion plate. In response to this, the sheet in front was released from the grip, and this sheet was folded into the lower surface of the workpiece.

However, in the case of this extrusion mechanism, when the base reaches a predetermined position, the stopper remains stationary and the cylinder operates constantly regardless of the size of the workpiece, and the extrusion plate moves in unison with the cylinder. Therefore, if the workpiece is small, there will be a difference in the timing of contact between the workpiece and the extrusion plate, and this difference will cause a difference in the extrusion timing, resulting in a difference in the timing between the actual extrusion of the workpiece and the release of the grip on the sheet. It has been found that this misalignment may lead to the sheet being torn or the packaging may be incomplete, and if the misalignment is large, the workpiece itself may be crushed by the extrusion plate.

To prevent this, it was necessary to take measures such as replacing the push-out plate or readjusting the timing for releasing the grip on the front seat.

In view of the above, the present invention was devised to provide a system that can reliably wrap a workpiece in a sheet regardless of its size and transport it to the next process. a substrate connected to the substrate, a sliding body supported on the lower surface of the substrate so as to be able to slide freely in the axial direction of the cylinder, and an elastic body for pushing out a workpiece attached below; The stopper is located below and in front of the board and moves downward to release the workpiece when the base reaches a predetermined position. The stopper stops the workpiece from moving forward until the base reaches the predetermined position after contacting the rear end, and the slider moves against the elastic force of the tension spring to move the lower surface of the board while the elastic body is in contact with the rear end of the workpiece. There is an extrusion mechanism in an automatic packaging device configured to slide.

Below, the present invention will be explained in detail based on the illustrated embodiment. In the figure, 1 is a base, and both ends of the base are chains 2.
, 2 so as to be movable back and forth, and a cylinder 4 is provided above the center of the rear part of the base 1 with a cylinder support frame 3 interposed therebetween so as to face forward.

A support body 5 is fixed to the tip of the cylinder 4 along with the ends of guide rods 6, 6 interposed in the cylinder support frame 3, and when the cylinder 4 is operated, the guide rods 6, 6,
It is designed to move by being guided by 6.

7 is a presser roller; 8 is a folding roller having a larger diameter than the presser roller 7; a support plate 9 attached to the tip of the base 1;
9 is supported at both ends.

Although the configuration so far is the same as that used in the above Japanese Patent Application No. 55-127422, the present invention further includes the following configuration.

That is, 10 is a board which is bent into a hook-shaped cross section and has a vertical part 10b attached to the front surface of the support 5 with the horizontal part 10a facing upward, and when the tip of the horizontal part 10a is curved upward, , long holes 10c, 10c are bored on both sides of the horizontal portion 10a.

This long hole 10C910C has the following bolt 13°13...
・Position this bolt 13°13...
This is to allow the cylinder 4 to slide freely in the elongated holes 10e, 10e in the axial direction of the cylinder 4.

Reference numeral 11 denotes a sliding body supported on the lower surface of the horizontal portion 10a of the substrate 10, which allows the sliding body 11 to freely slide in the axial direction of the cylinder 4. When the sliding plate 12 is used and both 11 and 12 are connected with bolts 13, 13..., both bolts 13.
13... are drilled in the horizontal portion 10a of the substrate 10.
0c, 10c, and these long holes 10c, 10e
Sliding body 11 connected with bolts 13, 13 along...
The sliding plate 12 and the sliding plate 12 are configured to slide together.

Further, this sliding body 11 has, at the rear of its front surface 11a,
An elastic body 15, which will be described later, is attached to the lower position via a plate 16, and a space 14 is formed between the elastic body 15 and the front lower surface Nlb of the sliding body 11. As shown in the drawings and FIG. 4, the rear end of the workpiece A can be inserted into the workpiece A, and its upper surface can be brought into contact with the front lower surface 11b of the sliding body 11 to support it.

Reference numeral 15 denotes an elastic body such as a sponge, which is located below the sliding body 11 and is attached to the sliding body 11 through a plate 16. The elastic body 15 is brought into contact with the rear end surface of the workpiece A, and is moved to the next process by the operation of the cylinder 4. This is for extrusion, and the use of an elastic body prevents the work A from collapsing (denting).

Reference numeral 17.17 denotes a tension spring for always biasing the sliding body 11 in the distal direction.Both sides of the sliding plate 12 are bent, and the attachment piece 12a is formed on the rear part thereof facing outward.
12a and a metal fitting 18. which is fixed to the front of the board 10.
The hook is installed by passing it between 18 and 18.

Reference numeral 19 indicates a table on which the workpiece A is placed, and reference numeral 2O indicates a stopper located at the front and lower part of this table 19, which is movable up and down, and moves upward to stop the workpiece A, and moves downward to release the stoppage. 21 is a carry-out roller, 22 is a front end gripping portion of the sheet B, and 23 is a heat conveyor.

Next, the operation of the present invention will be explained.

The base 1 moves forward as the chains 2, 2 move forward, and the elastic body 15 attached to the sliding body 11 comes into contact with the rear end surface of the workpiece A placed on the table 19.

Then, the base 1 continues to move forward, and the presser roller 7 and the folding roller 8 fold the sheet B into the rear lower surface of the workpiece A. At this time, the front end surface of the workpiece A is stopped by the upward movement of the stopper 20. As a result, this forward movement is prevented and positioning is performed, and the sliding body 11 slides on the lower surface of the substrate 10 together with the sliding plate 12 against the elastic force of the tension springs 17 and 17, and the elastic body 15 Since the sheet B stops at the position where it contacts the workpiece A, one side of the sheet B is elastically supported by the elastic body 15, and this folding is performed smoothly without shifting the sheet B, and the shape of the workpiece A is maintained. It will not collapse (dent).

Furthermore, even if the rear end of the workpiece A is lifted by the press roller 7 and the folding roller 8 at this time, if the space 14 is formed between the front lower surface of the sliding body 11 and the elastic body 15,
The upper surface of the rear end of the workpiece A is supported by the front lower surface 11b of the sliding body 11, and this work will not be hindered.

When the base 1 moves forward a predetermined distance, the chain 2.2 is stopped from moving forward, and the stopper 20 is moved down to release the stop of the workpiece A, and the cylinder 4 is activated to move it forward. As a result, the workpiece A moves forward along with the operation of the cylinder 4 (with its rear end surface being pushed by the elastic body 15 attached to the sliding body 11, which is elastically applied with a tension spring 17, 17). By releasing the grip of the front end grip part 22 of the sheet B, the sheet B is moved forward by the conveyance rollers 21, 21, . . .
Fold this into the front lower surface of work A) in the next process,
That is, the heater conveyor 23 is used to carry it out.

Therefore, even if the size of the workpiece A is different, not only will the timing of this forward movement always coincide with the operation of the cylinder 4, but the workpiece A itself will not be crushed as the base 1 moves forward. do not have.

Furthermore, since the front end of the work A is positioned by the stopper 20, the front end of the work A always moves in a constant manner regardless of its size.

Note that if a space 14 is formed below the front of the sliding body 11 at this time, the upper surface of the rear end of the workpiece A will be aligned with the lower surface 1 of the sliding body 11.
It will be supported by 1b.

After the above-mentioned work is completed, the cylinder 4 is operated in reverse, and the base 1 is further moved rearward by the chains 2, 2 and retreated to the regular position to prepare for the next work.

Since the present invention has the above-mentioned configuration, regardless of the size of the workpiece, the conveyance to the next process and the folding of the front sheet are always performed at the same time as the stopper is released and the cylinder is operated, and the sheet is The timing for releasing the grip on the front end of the handle may also be constant.

Therefore, it is possible to prevent the timing difference between the actual extrusion of the workpiece and the release of the grip of the sheet caused by the workpiece being small as in the past, and the crushing of the workpiece itself due to the thickness of the workpiece. There is no need to take measures such as replacing the push-out plate depending on the size of the sheet or readjusting the timing for releasing the grip on the sheet.

In addition, since the workpiece is pushed by the elastic body, not only will the shape of the workpiece not collapse (dent), but one side of the sheet is supported by the elastic body, so it will not shift, and therefore the rear part of the workpiece will not be distorted. Better packaging,
Moreover, this packaging is carried out smoothly.

Furthermore, by forming a space below the front of the sliding body, the top surface of the rear end of the workpiece can be supported by the bottom surface of the sliding body, allowing the workpiece to be reliably transported to the next process. effective.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and the first figure is a plan view and the second figure is a plan view.
The figure is a longitudinal sectional view, FIG. 3 is a longitudinal sectional view without showing a state in which a sheet is folded into the rear of a workpiece, and FIG. 4 is a longitudinal sectional view showing a state in which a workpiece is carried out to the next process. 1...Base, 4...Cylinder, 7...
...Press roller, 8...Folding roller,
10... Open substrate, 1°C... Same long hole, 11...
...Sliding body, 12...Sliding plate, 14...
... Space, 15 ... Elastic body, 17 - Curved/Tension spring, 20 ... Stopper, A ... Work, ... Sheet.

Claims (2)

[Scope of utility model registration request] (1) A cylinder is provided in the center of a base that can move back and forth, and a folding roller is supported at the tip of the base to stop the workpiece and move the base forward to fold the sheet to the rear of the workpiece. In an extrusion mechanism of an automatic packaging device, the workpiece is released from the stop, pushed out to the next process by a cylinder, and the sheet is folded in front of the workpiece. a sliding body supported so as to be slidable in the axial direction of the cylinder and having an elastic body attached below for pushing out a work; a tension spring biasing the sliding body toward the tip of the substrate; The stopper is located at the lower front and moves downward to release the workpiece when the base reaches a predetermined position.After the base moves forward and the elastic body contacts the rear end of the workpiece, the base moves to the predetermined position. A stopper stops the workpiece from moving forward until it reaches the position, and the sliding body slides on the lower surface of the substrate against the elastic force of the tension spring while the elastic body is in contact with the rear end of the workpiece. Extrusion mechanism in automatic packaging equipment. (2) In the claimed device, an elastic body is attached to a position below the front surface of the sliding body via a mounting plate, and a space is formed between the front lower surface of the sliding body and the elastic body. Extrusion mechanism.