JPH0676145B2 - Stack molded product take-out method, device and take-out suction mechanism - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a stack molding take-out method, an apparatus, and a pick-up and suction mechanism. For example, a trimming step for a synthetic resin sheet molding, The present invention relates to a method, an apparatus, and a pickup / adsorption mechanism for taking out stacked sheet molded products (hereinafter referred to as stack molded products) before trimming one by one.

<Prior art and its problems> In the manufacture of foam-molded products, conventionally, a synthetic resin sheet such as a foamed sheet is intermittently run, and press molding and other sheet molding are performed during running. A large number of molded products are formed on a single veneer-shaped sheet, and then trimming work is performed to cut and separate the molded products into individual products.

In such trimming work, for example, a supply unit that supplies stack cutting products taken out one by one to a cutting unit equipped with a Thomson blade is required.

In the case of manual work, take out the thin stack molded products that are stacked in multiple stages and the recesses (projections on the lower surface due to molding) are fitted together one by one from the top. There is a problem in terms of workability because it requires a difficult work.

Therefore, in order to improve the efficiency of the work, it has been proposed to mechanically take out the stack-molded products one by one, and this device is disclosed, for example, in JP-A-60-255400.
Some are disclosed in Japanese Patent Publication.

According to this apparatus, a vacuum suction disk is brought into pressure contact with the uppermost stack-molded product to suck the stack-molded product in a close contact state, and then the stack-molded product is pulled upward by a cylinder or the like.

However, in this case, since the uppermost stack molded product is once pressed by the vacuum suction disk, the air between each stack molded product is pushed out, and this uppermost stack molded product and several sheets below this stack molded product are pushed out. There is a risk that the stack-molded products will stick to each other, and not only one stack-molded product but also a plurality of stack-molded products will be pulled up at once.

In addition, in order to eliminate the above-mentioned adverse effect, it is possible to raise the vacuum suction plate only by strengthening the vacuum suction plate without pressing the vacuum suction plate to the uppermost stack molded product so strongly. It will come off during the process of pulling up the stack-molded product, resulting in a great decrease in efficiency.

<Objects of the Invention> The present invention has been made in view of the above problems,
A stack-molded product take-out method that ensures the take-out of the stack-formed products one by one and the efficiency of the one-by-one take-out operation, and an apparatus and a take-out suction device that are preferably used in the stack-formed product take-out method. It is intended to provide a mechanism.

<Means for Solving Problems> As a method for taking out the stack-formed product of the first invention for achieving the above-mentioned object, a stacking method of taking out the stack-formed products one by one from the top is the top stack. Temporarily press the molded product at the center of one side and
The stack is pulled up at a certain point and a gap is provided between the stack molded article below and the stack molded article below, and then the uppermost stack molded article is pulled up from the other lower stack molded article with the other side as a base point. A stack molded product is taken out after the temporary holding at the center of one side is eliminated by cutting off the central temporary holding position of the molded product. The stack molded product take-out device of the second invention is the In a take-out device for sequentially picking up the stack molded products housed in the stack one by one from above by a pulling means, the hopper is engaged with a pair of opposing side portions of the uppermost stack molded product to obtain the stack molded product. The side presser for fixing the stack presser and a center presser having a separating function that can hold the stack presser by contacting the center of one side of another pair of opposite side parts of the same stack presser. In addition, the pulling-up means is constituted by a pickup / sucking mechanism that sucks the uppermost stack-molded article at both sides of the center presser at least at two points on one side thereof and pulls it up with the other side as a base point. Depending on the change in the contact strength with the stack molded product that is pulled upward,
It is provided so that it can be released by separating the central temporary pressing portion. The stack-molded product take-out mechanism of the third invention is that the stack-formed products in the hopper are taken out one by one in order from the top In the device, an ejecting and adsorbing mechanism that adsorbs the stack molded product of the uppermost part temporarily clamped by a center press having a separating function to two left and right sides of one side of the stack molded product, and separates and separates the stack molded products one by one. A cylinder body, a hollow rod that is fitted into the cylinder body and moves back and forth due to a pressure difference in the body, and is attached to the rod tip end, and a decompression force for vacuum suction is passed through the rod. The cylinder body further comprises a suction part introduced from the cylinder body, and a spring member provided in the cylinder body for urging the rod in the advancing direction. Are those vacuum pipe connections for pressure reduction are provided.

<Operation> According to the method for taking out the stack-formed product having the configuration of the first invention, before the uppermost stack-formed product is temporarily pulled up from another stack-formed product below and taken out, one side portion between the two is formed. Since the gap is provided at least at two places, the degree of close contact between the uppermost stack molded product and the lower stack molded product can be weakened or eliminated, and the uppermost stack molded product is By pulling up on the other side from other stack molded products as a base point and separating the central temporary pressing portion of the stack molded product, the temporary stack at the center is eliminated, and then the uppermost stack molded product can be taken out.

According to the stack molded product take-out device of the second aspect of the present invention, the uppermost stack molded product of the center presser is fixed to the left and right sides of one side.
Until it reaches the specified contact strength when it is pulled up at a point,
It can be maintained as a temporary presser foot. Therefore, the uppermost stack molded product can be pulled up from the other side at least at two points on one side where the center presser comes into contact and is divided into left and right, and the adhesion is somewhat weakened. Meanwhile, it is possible to form a desired gap.

After forming the above-mentioned gap, the adhesion between the uppermost stack molded product and the lower stack molded product can be further weakened or eliminated, so that the uppermost stack molded product is further lowered. If the stack molded product is pulled up from the other side as a base point, the contact strength of the stack molded product with respect to the center presser changes strongly, and the center presser having a disconnection function separates the temporary presser part, and the center presser The fixed state due to is released, and the stack molded product can be taken out.

In this stack molded product take-out device, at least 2 of one side portion between the uppermost stack molded article and the lower stack molded article is provided by so-called temporary pressing at the center of one side portion.
Since it is possible to obtain a portion in which the degree of close contact is weakened, the uppermost stack molded article can be pulled up from the other side as a base point in order to form a gap therein.

According to the stack-molded product take-out suction mechanism of the third aspect of the invention, since the vacuum main body is provided with the vacuum pipe connecting portion for depressurizing, the suction part is depressurized to a vacuum state and the uppermost stack-molded product. It is possible to cause the rod to move upward by vacuum suction of the molded product and at the same time when the pressure difference in the cylinder body is introduced, compressed air is introduced into the body space below the piston and the molded product is vacuum-sucked with a strong force. Therefore, a desired gap can be provided between the uppermost stack molded product and the lower stack molded product.

As described above, by moving the rod upward in the cylinder body, compressed air can be sent to the space below the piston in the cylinder body, and only the uppermost stack molded product can be temporarily pulled up and taken out.

Further, after releasing the vacuum suction in the suction portion and supplying the stack molded product to the predetermined trimming portion, the rod can be promptly and forcibly moved downward by the biasing by the spring member. It is possible to quickly return to the original position so that the uppermost stack molded product can be vacuum-adsorbed.

In this stack molded product take-out suction mechanism, the stack molded product can be pulled upward while the suction of the suction part for the uppermost stack molded product remains strong, so that the lower stack molded product can be pulled up. A desired gap can be provided between the uppermost stack molding and the lower stack molding to weaken or eliminate the degree of close contact with the lower stack molding, and only the uppermost stack molding can be quickly pulled up and taken out.

<Embodiment> Hereinafter, with reference to the accompanying drawings, a method for taking out a stack molded product, an apparatus, and a take-out suction mechanism of the present invention will be specifically described. It is needless to say that the present invention is not limited to the embodiments described below, and various design changes can be made without departing from the scope of the present invention.

FIG. 1 is a schematic configuration diagram of a stack molded product take-out apparatus that is preferably used in the stack molded product take-out method of the present invention.

In FIG. 1, a stack molded product take-out device is provided with a table (1) which can be moved up and down by a driving means (not shown). The table (1) is configured so that a large number of sheet molded products after molding and before trimming can be stacked and placed as a stack molded product (P). Stacked product (P)
Is formed, for example, in a rectangular shape when seen from a plane. The table (1) and a large number of stack-molded products (P) stacked on the table (1) are housed in a hopper (2) that is fixedly installed and has an upper end opening. Corresponding to the rectangular shape of the product (P), it is formed in a box shape with a rectangular horizontal cross section.

At the top opening of the hopper (2), the stack molding (P)
The side pressers (3) and (3) and the center presser (4) are attached so as to prevent them from coming out due to vibration or the like.

That is, as can be seen from FIG. 1, the side presser (3) is provided so as to correspond to a pair of opposing side portions of the uppermost stack molded product (P1) that has been pushed up to the upper part of the hopper (2). And engages with the pair of opposing sides in a disengageable manner.

This side retainer (3) is the top stack molded product (P
When 1) is pulled up and curved and deformed into a mountain shape, it is formed in a substantially hook shape so that the engagement state with the stack molded product (P) can be released according to the degree of this deformation.

Further, as can be seen from FIG. 2, the center presser (4) has one side (A) of another pair of opposite side portions of the uppermost stack molded product (P1) (for example, the stack molded product (P1)). ) Is provided at a position corresponding to the center part of the trimming blade (T) which moves to receive (1), and abuts against the center part of one side (A) of the pair of opposing side parts to fix the same. It is something to keep.

When the stack molded product (P1) is pulled upward, the center presser (4) changes its contact strength with the stack molded product (P1), that is, the contact changes strongly.
By cutting off the central temporary pressing point of this stack molded product (P1), it is possible to release the fixed state due to contact with the stack molded product (P1). For example, a knife with a thin wall thickness. Has been selected.

A photoelectric tube (5) is provided at the upper end opening of the hopper (2), and the upper limit of the stack molded product (P), that is,
The presence / absence of a stack molded product (P) that can be placed at the lowering position of the suction plate (62c) described later is detected.

Next, on both the left and right sides of the center presser (4), above one side (A) of the other pair of opposing side parts of the uppermost stack molded product (P1), the stack molded product is placed. Equipped with suction cylinders (6) and (6) as a pickup suction mechanism for (P1).

As shown in FIG. 4, the suction cylinder (6) is mainly fitted with a cylinder body (61) and a piston portion (62a) side slidably fitted into the cylinder body (61). It is composed of a pressure difference and a rod (62) which moves up and down by the compressed air entering from the air supply port (67) of FIG.

The cylinder body (61) is provided with pressure chambers (64) (65) partitioned by the piston portion (62a). The pressure chamber (64) side is provided with a vacuum pipe connecting portion (66) for decompression, and the pressure chamber (65) side is provided with the above-mentioned compressed air supply port (67).

A conduction hole (62b) communicating with the pressure chamber (64) is formed in the rod (62). And the rod (62)
A suction cup (62c) made entirely of rubber is attached to the tip end on the opposite side of the piston (62a), and the suction cup (62c) is communicated with the above-mentioned conduction hole (62b) at the recessed bottom portion. ing. Therefore, the suction disc (62c) communicates with the pressure chamber (64), and the suction disc (62c) has a reduced pressure for vacuum suction of the uppermost stack molded product (P1) via the pressure chamber (64). Pressure will be introduced.

And, one of the characteristic components of this suction cylinder (6)
One is that the spring (7) for constantly urging the rod (62) downward is fitted in the pressure chamber (64) in a compressed state.

Next, a stack molded product take-out device and a stack molded product take-out method and device using the take-out suction mechanism,
The function of the mechanism will be described.

First, as can be seen from FIG. 1, when the uppermost stack molded product (P1) is raised in the upper opening of the hopper (2), the side pressers (3) (3) and the center presser (4) are used. , The uppermost stack molded product (P1) is fixed at three places, one pair of opposing sides and one side (A) central portion (see FIG. 2) of the other pair of opposing sides. be able to. Therefore, for example, before the uppermost stack molded product (P1) is temporarily pulled up from the other lower stack molded product (P2) and taken out, the stop of the center presser (4) from the uppermost stack molded product (P1) is stopped. It is possible to maintain a constant state as a temporary presser until the contact strength between the stack molded product (P1) and the center presser (4) changes as the uppermost stack molded product (P1) is pulled up. it can. As a result, the center presser (4) abuts and is divided into the left and right, and the adhesion is somewhat weakened, and the uppermost stack molded product (P1) is pulled up by the suction mechanism serving as the pulling up means. It is possible to form a desired gap in the meantime.

After the gap is formed, the adhesion between the uppermost stack molded product (P1) and the lower stack molded product (P2) can be further weakened or eliminated, so that the suction cylinder (6 ) Is driven to pull up the uppermost stack molded product (P1), the abutting strength with the center presser (4) becomes stronger, and the center presser (4) having the separating function separates the central temporary presser part. , The fixed state of the temporary presser is released. In this way, the uppermost stack molded product (P1) is released from the state of the temporary pressing by the center presser (4), and only the uppermost stack molded product (P1) is moved to the lower stack molded product (P1).
It can be quickly pulled up from 2) and taken out.

The stack molded product (P1) is taken out by the trimming blade (T) that conforms to the shape of the stack molded product (P1). In FIG. 3, the uppermost stack molded product (when pulled up by the suction cylinder (6) ( P1) is shown, where
It is shown that the trimming blade (T) described in FIG. 2 is inserted between the trimming blade (T) and the lower stack molding (P2) so as to receive the stack molding (P1).

In this case, according to the function of the suction cylinder, as shown in FIG. 4, the pressure chamber (64) is depressurized, and the suction disk (62c) communicating with the pressure chamber (64) is depressurized into a vacuum to form the uppermost stack. Vacuum adsorption to the product (P1). On the other hand, compressed air is supplied to the pressure chamber (65) from the compressed air supply port (67), and the cylinder body (61)
When a pressure difference that causes the rod (62) to move upward is generated inside, the spring (7) urges the molded product adsorbed by the adsorption disc (62c) to the next step by urging it in the opposite direction. After that, the rod (62) overlaps with its own weight and the rod (6
2) can return downward quickly.

Next, when a larger pressure difference is generated in the cylinder body (61) by further moving the rod (62),
Due to the existing gap, the degree of close contact with the lower stack molded product (P2) (see FIG. 2) is weakened or eliminated, and only the uppermost stack molded product (P1) can be quickly pulled up and taken out.

Also, after releasing the vacuum suction on the suction plate (62c) and supplying the stack molded product to a predetermined trimming portion,
The rod (62) can be forcibly and temporarily moved downward by the biasing force of the spring (7), and the next uppermost stack molded product (the lower stack molded product (P2) in the figure is equivalent. ), It is possible to quickly return to the original position in order to perform vacuum adsorption.

<Effects of the Invention> As described above, regarding the method for taking out the stack-formed product having the configuration of the first invention, before the uppermost stack-formed product is temporarily pulled up from another stack-formed product below and taken out, , Temporary stacking of the top stack molding is performed,
Since a gap is provided at least at two positions on one side between them, the degree of close contact between the uppermost stack molded product and the lower stack molded product can be temporarily weakened or eliminated by this clearance. it can. Therefore, after the gap is provided, the uppermost stack molded product is pulled up from the other lower stack molded product with the other side as the base point, and the central temporary pressing portion of the stack molded product is cut off. Since the stack moldings can be taken out after eliminating the temporary pressing at the center of one side, the reliability of taking out the stack moldings one by one is improved and the taking out work one by one is made more efficient. be able to.

Next, in the stack molded product take-out device having the configuration of the second aspect of the present invention, the uppermost stack molded product is temporarily pressed, and the uppermost stack molded product and the lowermost stack molded product are held at least at two positions on one side. Since the uppermost stack molded product can be pulled up from the other side as the base point while the adhesion to the stack molded product is weakened, more space can be formed there and the center presser The stack molded product can be fixed by contact, and the fixed state can be released smoothly due to the point of having the separating function. Therefore, the method of taking out the stack molded product of the first invention can be suitably implemented. .

Further, in the stack molded product take-out and adsorption mechanism having the configuration of the third invention, since the vacuum pipe connection portion for decompressing is provided in the cylinder body, the uppermost stack molded product can be pulled up. It can be done with a strong force. When adsorbing and raising the rod, a desired gap can be provided between the uppermost stack molded product and the lower stack molded product on both sides with the center presser as the center, and close contact with the lower stack molded product. It is possible to take out the uppermost stack molded product, which has been weakened or is lost, at a time. In this respect, various peculiar effects such as being able to function effectively for carrying out the method for taking out the stack-formed product of the first invention are exhibited.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a stack molded product take-out apparatus which is preferably used in a stack molded article take-out method of the present invention, FIG. 2 is a schematic side sectional view of a stack molded article take-out apparatus, and FIG. Explanatory drawing which shows the use condition of the taking-out apparatus of a stack molded product, FIG. 4 is sectional drawing which shows the taking-out adsorption cylinder of a stack molded product. (2) …… Hopper, (3) …… Side presser, (4) ……
Center presser, (6) …… Suction cylinder, (61) …… Cylinder body, (62) …… Rod, (66) …… Vacuum pipe connection, (7) …… Spring, (P1) …… Top part Stacked product, (P2) …… Lower stacked product.

Claims (3)

[Claims] 1. A take-out method for picking up stack molded products one by one from the top, wherein the uppermost stack molded product is temporarily pressed at the center of one side and pulled up at two places on the right and left sides of the one side. And a gap is provided at the two points between the uppermost stack molded product and the lower stack molded product, and the other side is pulled up from the other side as a base point.
A method for taking out a stack molded product, characterized in that the stack temporary molded product is taken out after the temporary temporary pressing at the center of one side is eliminated by separating the central temporary pressing portion of the stack molded product. 2. A stack molding product housed in a hopper,
In a take-out device for pulling up and picking up one by one from the top by pulling means, a hopper is provided with a side retainer that engages with a pair of opposite side portions of the uppermost stack molded product to hold the stack molded product. A center press having a separating function can be attached by abutting against the center of one side of another pair of opposing side parts of the stack molded product, and a center presser having a separating function is attached, and the pulling means is provided on both sides of the center presser. In addition, the uppermost stack molded product is configured to be sucked up at least at two points on one side and pulled up with the other side as the base point, and the fixed state of the center presser for the stack molded item is pulled up. The stack molded article is characterized in that it is releasably provided by cutting the central temporary pressing portion in accordance with the change in the contact strength with the stack molded article. And equipment. 3. A stack molded product in a hopper is sequentially numbered from the top as 1
In a take-out device for taking out the sheets one by one, the center of one side is temporarily held by a center retainer having a separating function, and the uppermost stack molded article is adsorbed on two left and right sides of one side, and the stack molded articles are separated one by one. An ejecting and adsorbing mechanism for ejecting, which is attached to a cylinder body, a hollow rod that is fitted into the cylinder body and moves back and forth due to a pressure difference in the body, and is attached to a rod tip end to reduce pressure for vacuum adsorption. The cylinder body is provided with a suction portion which is introduced from the cylinder body through the rod, and a spring member which is provided in the cylinder body and urges the rod in the advancing direction. A take-out suction mechanism in a take-out device for a stack molded product, characterized in that a pipe connecting portion is provided.