JPS6350160B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention relates to a trimming device for synthetic resin molded products.

<Background and prior art> After a large number of molded products are formed on one sheet by press molding or other sheet forming on a synthetic resin sheet such as a foamed sheet, a trimming operation is performed to cut and separate each product. I was getting used to it. Conventionally, the device for performing this trimming was to transfer the product along with the cut immediately after trimming with a cutting section using a Thomson blade (for example, see Japanese Patent Publication No. 58-34279). In addition to the disadvantage that the product may come apart irregularly, if the trimmed product is attached to the cut part,
The task of removing and recovering the product from the cut section in the recovery section was extremely troublesome. Therefore, an improved trimming device (Japanese Patent Application Laid-open No. 1983-
219016), but in the case of this device, processing time was required for stacking and transporting products before and after trimming, and cycle-up was not possible, so there was room for improvement.

<Purpose and Structure> Therefore, the present invention overcomes the above-mentioned conventional drawbacks, prevents the product from coming apart immediately after trimming, and enables reliable and efficient product recovery after trimming. We are trying to provide a trimming device that facilitates the front and back product stacking and product supply.As for its configuration, the top plate is fixedly installed on the top, and the bottom surface has a holder for the Thomson blade and a holder for the product. A cutting section is provided with a suction means, and a press plate is provided below the top plate, which is movable in the horizontal direction and can be raised and lowered, and the press plate includes a cutting section equipped with a Thomson blade, and A table for receiving products before trimming that has a step higher than the height of the Thomson blade installed in the section, and a table for receiving products before trimming that is located opposite to the table for receiving products before trimming and sandwiching the cutting section. and a product receiving table, and the tables and the cutting section are configured to be movable together in the horizontal movement direction, and only when the cutting section of the press plate moves horizontally from directly below the top plate, the press plate Stoppers that can come into contact with the products placed thereon are provided on the upstream side of each of the table for receiving products before trimming and the table for receiving products after trimming, so that when the press plate is horizontally moved, The product can be temporarily adsorbed to the product suction means, and a product supply means is provided on the product receiving table before trimming to supply the product to the product receiving table at a predetermined timing, and The device is characterized in that the product receiving table side is provided with a product collecting means for receiving products falling from the table.

<Example> Next, examples of the present invention will be illustrated below with reference to the drawings.

The first embodiment shown in FIGS. 1 to 3 is an apparatus having a supply section A for products (molded products) before trimming, a cutting standby section B, a cutting section C, and a collection section D for stacking products after trimming. In the second embodiment shown in FIGS. 5 to 7, a star-shaped part E is added between the cutting part C and the collecting part D.

First, in the first embodiment, reference numeral 1 denotes a top plate, which is fixedly installed at the top of the device. On the bottom surface of the top plate 1 is a cradle 10 for the Thomson blade as a cutting part.
and a product (molded article) suction means 11. The suction means 11 has a suction hole formed by blower suction at the position of the Thomson blade holder 10 so that the trimmed product p can be temporarily suctioned onto the top plate 1 side.

Reference numeral 2 denotes a press plate, which is installed at a lower position of the device so as to face the top plate 1, and has a Thomson blade 20.
The product P can be inserted between the top plate 1 and the Thomson blade holder 10 and cut by pressure. This press board 2 includes a table 21 for receiving products before trimming, which has a step higher than the height of the Thomson blade 20 installed at the cutting part of the press board 2, and a table 21 for receiving products before trimming. A trimmed product receiving table 22 is provided at the opposite position to sandwich the cut portion, and both product receiving tables 21 and 22 and the cut portion installed on the press plate 2 are moved horizontally. The table 21 for receiving products before trimming is higher than the height of the Thomson blade 20 installed in the cutting section of the press plate 2 (in the embodiment, the height is 20~20 mm).
The stack is 50mm higher) and has a step, which increases the number of stacks and reduces the take-out stroke due to the cylinder mechanism described later.
The falling distance is maintained so that it can be easily placed on the Thomson blade 20.

Reference numeral 30 denotes a product supply table lifter as a product supply means, on which a large number of products p made of sheet molded products can be stacked and placed. A product suction cup 40 is provided above the lifter 30 and can be moved up and down by a cylinder mechanism 41, and the product p can be sucked one by one by vacuum pad suction to the product receiving table 21. and products.

Further, reference numeral 50 is an elevating plate that can be raised and lowered by a hydraulic cylinder 51 etc., and the press plate 2 can be raised and lowered freely. It is also movable in any direction. In addition, the press plate 2 is different from the top plate 1.
As shown in Fig. 4, the protrusion 24 and the top plate 1 are partially provided.
If a central positioning structure is provided using the side guide portions 14, positioning can be performed using the lifting force of the press plate 2. In addition, if a shock absorber function is installed separately, it will be useful in alleviating the shock caused by stopping movement in the horizontal direction, and it will also be useful in shortening the time for moving in the horizontal direction by quickly stopping movement.

Furthermore, 60 in the figure is a table lifter as a product collection means for collecting the product p' after trimming, and allows the products p' to be stacked and collected. 70 and 80 are products p, which are placed on the respective tables 21 and 22 of the press plate 2 only when the cutting part of the press plate 2 moves horizontally from directly below the top plate 1;
p' is provided so as to be able to come into contact with it so as not to move backward in the horizontal direction, and is provided on the upstream side of each of the table 21 for receiving products before trimming and the table 22 for receiving products after trimming, and Mechanisms 71 and 81 enable timing operation.

The operation of the apparatus according to the above embodiment will be explained.

First, the molded product is a container-shaped product that is bulged from foamed or non-foamed sheet materials of various synthetic resins by so-called sheet molding such as vacuum molding or press molding, and is sized appropriately. A large number of products are formed side by side on a single molded product.

First, in the state shown in FIG. 1, one sheet of the product P is sucked and lifted by the product suction cup 40 in the supply section A, and the product receiving table 21 is placed below the product receiving table 21 in the drawing of the entire press board 2. It advances by horizontal movement to the right, and in this state, the cutting standby part B
The next product to be trimmed is placed on the Thomson blade 20, and the trimmed product p' is released from the suction means 11 of the top plate 1 and placed on the product receiving table 22 on the collecting side of the press plate 2. It has been lowered.

Next, after placing the product p from the product suction cup 40 onto the product receiving table 21, the entire press plate 2 is moved to the left in the figure as shown in FIG. The products in the cutting standby section B go to the cutting standby section B, and the products on the table 22 go to the cutting section C.
p′ is horizontally moved toward the recovery side. In this state, the press plate 2 rises, and at the cutting section C, the Thomson blade 2
0 and its pedestal 10 to perform trimming cutting. The trimmed product p' is temporarily attracted to the top plate 1 side by the suction means 11 of the top plate 1, and only the press plate 2 is lowered to its original state. The products on the table 22 are moved to the collection side.

Thereafter, the press plate 2 will move to the right in the figure as shown in Figure 3, but at this time, the products on the tables 21 and 22 will be moved in the opposite direction to the right of each table 21 and 22. The reverse movement is prevented by stoppers 70 and 80, and both of the table 2
1 and 22, the product P before trimming is transferred from the table 21 onto the Thompson blade 20 of the press plate 2, and the product on the table 22 on the collection side.
p′ is stacked on the collection side. After the press plate 2 has completely moved to the right, the product p' that has been adsorbed to the top plate 1 side after trimming is transferred to the table 22.
The other table 21
will return to the state shown in Figure 1, in which it has advanced to the product side before trimming.

In contrast to the first embodiment described above, FIGS.
The difference in the second embodiment shown in the figure is that a star-shaped part E with an adsorption means 16 is interposed between the cutting part C and the collecting part D. In this case, as shown in FIG. 9, the star shavings S, which are small scrap pieces generated between the shaped parts W of the molded product, are to be trimmed. As shown in Fig. 8, a star collecting hole 25 is formed, and a star collecting jig 26 is installed around this hole 25.
There is a protruding star pin 1 on the top plate 1.
5 makes it easier to extract star scum S. That is, when pulling out the star shavings S downward from above the molded product with the knock pin 15 having a cross-shaped tip that can come into contact with the inside of the star shavings S shape of the molded product,
A triangular plate-shaped jig 26 with a sharp tip provided at appropriate positions (four locations in the figure) approximately adjacent to the outer periphery of the knock pin 15 comes into contact with the shaped portion W on the outer periphery of the star shavings S of the product p, and this portion W is This prevents the star scum S from being pushed downward together with the star scum S, ensures that only the star scum S is removed, and prevents excessive force from being applied to the shaped portion W or deforming it (see Fig. 8).

In particular, according to the above structure, it is possible to easily deal with changes in the shape of the product p by making the dowel pins 15 and the jig 26 replaceable by tightening bolts, etc. It is unaffected and has excellent flexibility.

In the case of the embodiment having the star-removing portion E, the star shavings S can be removed at adjacent positions simultaneously with cutting and trimming using the Thomson blade 20 and the pedestal 10. Similar to the cutting section C, the product is temporarily attracted to the top plate 1 side after the star is removed.

Among the above-mentioned implementation devices, mechanisms for lifting and horizontally moving the press plate 2 include, in addition to the illustrated wheels 23 and hydraulic cylinder 51, for example, for horizontal movement, a hydropneumatic cylinder, chain traction, crank, etc.
Various known mechanisms such as a rack and pinion mechanism are used, and the mechanism for lifting and lowering can also be replaced with the above-mentioned mechanisms, and can be freely changed as necessary for practical use.

<Effects> In this invention, the Thomson blade holder on the bottom surface of the top plate,
A trimming cut is made to the sheet molded product at the cutting part with the Thomson blade on the press plate below the top plate, and the product after trimming is temporarily adsorbed to the top plate side using suction means on the top plate side. This prevents the molded product from coming apart irregularly from the cut section immediately after trimming, making it easier to move on to the next process, and also because it is not directly collected from the cut section in the case of the next process recovery section. , it becomes very easy to collect molded products.

Furthermore, in the present invention, the press plate includes a cutting section equipped with a Thomson blade, a table for receiving the product before trimming that is higher than the height of the Thomson blade and has a step, and a table for receiving the product before trimming that holds the cutting section between the two. A table for receiving trimmed products is formed at a position opposite to the table for receiving trimmed products, and both the tables and the cutting section are configured to be movable together in the horizontal movement direction, so that the cutting section of the press plate A stopper that can come into contact with the product placed on the press plate only when horizontally moving from directly below the top plate is provided on the upstream side of each of the table for receiving products before trimming and the table for receiving products after trimming. This makes it very easy for the press machine to receive the product before trimming, and by keeping the stopper in contact with the product when the press machine moves horizontally, the product can be easily transferred to the press machine. It can be moved relative to the At the same time, since the table for receiving products before trimming has a structure that has a step higher than the Thomson blade, products can be sent from the table for receiving products before trimming onto the Thomson blade in conjunction with this movement, and the product can be fed easily. It can reduce the amount of work involved.

In addition, when collecting products after trimming,
When moving the press machine, simply by keeping the stopper in contact with the product on the product receiving table after trimming, the product can be dropped from the table onto the product collection means, reducing the time and effort required for product collection. It can be reduced. Moreover, since both tables are installed on the same press, the time required to supply products before trimming and the time required to stack products after trimming can be completed simultaneously in one cycle, so the time required to stack products for product recovery can be completed at the same time. You can save most of your time. Therefore, the previously proposed JP-A-Sho
No. 58-219016 requires a separate conveyance means for products before trimming or a mechanism such as a protruding plate required for recovering products after trimming, which has the great advantage of simplifying the entire apparatus.

[Brief explanation of drawings]

The figure shows an embodiment of the invention.
3 to 3 are front views showing the operation of the first embodiment, FIG. 4 is a partial front view illustrating the positioning state of the press plate with respect to the top plate, and FIGS. 5 to 7 are front views showing the operation of the second embodiment. FIG. 8 is an enlarged perspective view of the star-shaped portion, and FIG. 9 is a plan view of the molded product. 1...Top plate, 10...Pedestal, 11...Adsorption means, 2...Press plate, 20...Thomson blade, 2
1, 22...table, p...product before trimming, p'...product after trimming, A...supply section,
B... Cutting standby section, C... Cutting section, D... Collection section, E... Star collecting section.

Claims (1)

[Claims] 1. The lower surface of the top plate fixedly installed at the top includes a cutting section equipped with a Thomson blade holder and product suction means, and the lower part of the top plate has a cutting section along the horizontal direction. A press plate that is movable and can be raised and lowered is installed.
The press machine includes a cutting section equipped with a Thomson blade, a table for receiving the product before trimming that is higher than the height of the Thomson blade installed in the cutting section, and a table for receiving the product before trimming, which holds the cut section and holds the product before trimming. A table for receiving products after trimming is provided at an opposite position to the table for receiving products after trimming, and both the tables and the cutting section are configured to be movable together in the horizontal movement direction, and Only when the cutting section moves horizontally from directly below the top plate, a stopper that can come into contact with the product placed on the press plate is installed upstream of the product receiving table before trimming and the product receiving table after trimming. When the press plate is moved horizontally, the trimmed product can be temporarily adsorbed to the product suction means, and the product is placed on the product receiving table before trimming at a predetermined timing. A synthetic resin molded product, characterized in that a product supply means is provided for supplying the product to a product receiving table, and a product collecting means is provided on the side of the product receiving table after trimming to receive the product falling from the table. trimming device. 2. As a press plate, a press plate with wheels attached to the lower part is placed on the upper surface of an elevator plate that can be raised and lowered so that it can be raised and lowered and moved in the horizontal direction. The trimming device for synthetic resin molded products described above.