JPH06724U - Product release equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Automates the work of releasing a product from a mold and quickly releases the product without damaging the product. A chuck 3 for holding one end of a product 2 attached to a mold 1 is provided so as to be movable toward and away from the product, and a pin 5 that closes an opening 4 of the product and a mold 5 that comes into contact with the mold 1 are provided. A lid 6 that forms a closed space S is provided by the mold 1 and the pin 5 so as to be able to move toward and away from the product, and a product 2 and a metal in the closed space S can be moved from a through hole 7 formed in the lid 6 to the product 2. Product 2 with chuck 3 while blowing air on boundary surface 8 with mold 1.
Pull out.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention relates to a device for releasing a product, and can be used, for example, as a device for releasing a molded product after completion of injection molding from a mold.

[0002]

[Prior art]

 For example, when a material such as a rubber material is injection molded to obtain a product having a desired shape, it is necessary to release the product from the mold after the injection molding is completed. In particular, in the case of a product having a complicated shape as shown in FIG. 3, since the molded product adheres to the mold when the mold is opened, the mold release is not easy. Conventionally, the molded product is released from the mold by manually pulling one end of the molded product.

[0003]

[Problems to be solved by the device]

 However, the conventional manual work not only increases the product cost, but also has the following various problems. First, when the molded product is pulled out from the mold, if the adhesive force of the molded product is large, the peeling is not performed smoothly, so that the surface of the molded product may be damaged or damaged. As a result, there is a problem that the defective rate of molded products will decrease, and careful mold release work was required to prevent scratches. Therefore, it has resulted in a decline in productivity.

In addition, the environment of the space where the injection molding machine is installed is not necessarily good, and in order to perform manual work in such a space, for example, a supply / exhaust device is provided for the work. It was necessary to improve the environment. Moreover, when manual work is performed near the injection molding machine, additional equipment such as a safety device is required to ensure safety. As described above, there is a problem that not only the cost is increased by allocating the workers, but also the equipment cost accompanying the increase.

The present invention has been made in view of the above problems of the prior art, and automates the work of releasing the product from the mold, and quickly releases the product without damaging the product. The purpose is to do.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the product releasing apparatus of the present invention is provided with a chuck for holding one end of the product attached to a mold so as to move toward and away from the product, and close the opening of the product. A pin and a lid member that comes into contact with the mold and forms a closed space by the mold and the pin are provided so as to be able to move toward and away from the product, and the sealing is performed from a through hole formed in the lid member. It is characterized by supplying fluid to the interface between the product in the space and the mold.

[0007]

[Action]

 With respect to the finished product, the pin and the lid material are brought close to the product in a state of being attached to the die, the opening of the product is closed by the pin, and the lid material is brought into contact with the die. As a result, the space defined by the mold, the lid and the pin becomes a closed space. At the same time, a chuck is brought close to the product to grasp one end of the product and pull out the product. The product tends to be released from the mold by the chuck, and at the same time, the fluid is supplied to the adhesion interface between the product and the mold, so that the mold is released smoothly.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a device for releasing a product according to an embodiment of the present invention, FIGS. 2A and 2B are cross-sectional views of main parts for explaining the operation of the embodiment, and FIG. 3 is a view of the same embodiment. It is sectional drawing which shows the product and metal mold | die applied to a mold release apparatus. 2A and 2B are cross-sectional views taken along different lines.

First, as shown in FIG. 1, a product 2 (hereinafter, also referred to as a molded product, see FIG. 3) that has been molded by injection molding or the like is attached to a mold 1 and a base 10 of a chassis 9 is attached. Placed on. The product 2 described in the present embodiment is a rubber cover used for an automobile brake booster as shown in FIG. 3, and is formed in a tubular shape with both ends open. Since the product 2 has the small-diameter portion 11, when the injection molding is completed, the upper die, the lower die and the core (none of which are shown) do not remain, and the upper and lower molds shown in FIG. Will be left in the mold 1 placed between.

In order to release such a molded product 2 from the mold 1, it is necessary to pull out the molded product 2 in the upward or downward direction of the mold 1 in FIG. There is an adhesive force on the boundary surface 8 with the product 2. Since this adhesive force acts as a large resistance force in the drawing direction, there is a risk that the molded product will be damaged if the molded product 2 is rapidly pulled out. In the mold releasing apparatus according to this embodiment, such damage at the time of mold releasing is also prevented. This structure will be described later.

An upper moving platen 12 is provided above the mold 1 placed on the base 10. The upper moving platen 12 is vertically moved by the driving force of the fluid cylinder 14 while being supported by the slide guide 13. In FIG. 1, the upper half of the upper moving platen 12 is shown in the left half, and the lower half of the upper moving platen 12 is shown in the right half. As the fluid cylinder 14, either an air cylinder or a hydraulic cylinder can be used. When the mold 1 having the molded product 2 attached thereto is placed on the base 10 by a controller (not shown), the upper moving platen 12 is lowered. On the other hand, when the molded product 2 is released from the mold 1, the upper moving platen 12 is raised.

A pin 5 is hung and fixed on the lower surface of the upper moving plate 12 in correspondence with the molded product 2 of the mold 1 placed on the base 10. As shown in FIG. 2B, a large-diameter portion 15 that closes the opening 4 of the molded product 2 is formed. Further, a bowl-shaped lid member 6 is inserted into the pin 5 and is urged by a spring 16 interposed between the lid member 6 and the upper moving plate 12 toward the tip of the pin 5. There is. In addition, the springs 16 are provided, for example, in four equal parts with respect to one lid member 6. The insertion portion between the pin 5 and the lid member 6 is airtightly fitted and slidable. If it is difficult to form the fitting between the pin 5 and the lid member 6 by machining, a seal ring or the like may be provided between the both members 5 and 6.

The lower surface of the lid member 6 is formed so as to come into contact with the mold 1 placed on the base 10, and a seal ring 17 is provided on the lower surface. Then, when the upper moving platen 12 is lowered, the lower surface of the lid member 6 starts to contact the mold 1, and when the upper moving platen 12 is further lowered, the lid member 6 is pressed against the mold 1 by the spring 16. Further, since the pin 5 is fixed to the upper movable platen 12, it is lowered together with the upper movable platen 12 to close the opening 4 of the molded product 2. When the upper movable platen 12 descends to the position where the pin 5 closes the opening 4 of the molded product 2 in this way, a space S sealed by the pin 5, the lid member 6 and the mold 1 is formed. Molded product 2 is included in S.

“7” shown in FIG. 2B is a through hole formed in the lid member 6, and is connected to a fluid supply source such as air via a hose elbow 18. The through holes 7 are formed in, for example, two places for one lid member 6. Further, the position where the through hole 7 faces the closed space S is an adhesion boundary surface 8 (hereinafter also referred to as an adhesion surface) between the molded product 2 and the mold 1, as shown in FIG. It is preferable that the fluid supplied from the through hole 7 is sprayed substantially vertically to the nozzles 8. As described above, the adhesive force is generated between the molded product 2 and the mold 1 even if the mold release agent is applied, and this adhesive force is exerted in the pulling direction of the product 2. On the other hand, it will be used largely. Therefore, in this embodiment, air is blown at a substantially right angle to the adhering surface 8 so that this adhering force is minimized, and one end of the molded product 2 is separated from the mold 1 by this external force, and one end is separated. After this, air is further introduced from the gap between the molded product 2 and the mold 1 so that peeling is performed sequentially.

On the other hand, below the mold 1 placed on the base 10 shown in FIG. 1, a chuck 3 for gripping and pulling out one end (lower end in FIG. 1) of the molded product 2 is provided. . The chuck 3 can grip the molded product 2 by the two claws 19 moving toward and away from each other, and the approaching and moving away is performed by a fluid cylinder (not shown) provided in the housing 20. “21” is an air supply port for operating the fluid cylinder in the housing. The chuck 3 is fixed to a lower movable platen 22, and the lower movable platen 22 can be moved vertically along a slide guide 23 by a fluid cylinder 24 provided in the chassis 9. These two fluid cylinders, that is, the fluid cylinder that opens and closes the claws 19 and the fluid cylinder 24 that moves and moves the lower moving platen 22 are controlled by a controller (not shown) to control air supply / stop, thereby forming It is designed to grab, release, or pull out item 2.

The above-described fluid cylinder 14 for vertically moving the upper moving plate 12, the fluid cylinder for opening and closing the chuck 3, and the fluid cylinder 24 for vertically moving the lower moving plate 22 are composed of a motor and a gear mechanism. The same effect can be obtained as well.

The main part configuration of the mold releasing apparatus of the present embodiment has been described above with the pair of mold releasing structures including the lid member 6, the pin 5, the molded product 2 and the chuck 3. However, in the present embodiment, FIG. As shown in FIG. 3, a specific example in which four molded products 2 are attached to the mold 1 is shown assuming a case where a large number of molded products 2 are taken in injection molding. Corresponding to each of the four molded products 2, four pins 5 are hung and fixed on the upper moving platen 12, and a lid member 6 is attached to each pin 5. Therefore, when the upper moving platen 12 moves up and down, the four pins 5 and the lid member 6 move up and down at the same time. Further, four sets of chucks 3 are fixed to the lower moving platen 22, and when the lower moving platen 22 moves up and down, the four sets of chucks 3 move up and down at the same time, and the claws 19 hold / release the molded product 2 at the same time. It is supposed to be done.

When a large number of molded products 2 are taken in this way, a plurality of mold release structures consisting of the lid member 6, the pin 5 and the chuck 3 are provided, and a plurality of molded products 2 are released in one cycle. It is preferable to do so. However, the mold releasing device of the present invention can be applied to a single molded product.

Next, the operation will be described. First, when the injection molding is completed, the mold is opened, and the mold 1 to which the molded product 2 is attached is placed on the base 10 of the mold releasing apparatus of this embodiment. At this time, the upper movable platen 12 is positioned at the upper limit and the lower movable platen 22 is positioned at the lower limit. Next, when the upper moving platen 12 is lowered, the lid member 6 first comes into contact with the mold 1, and when the lowering is continued, the spring 16 interposed between the upper moving platen 12 and the lid member 6 is continued. The lid member 6 is pressed against the mold 1 by the result, and as a result, as shown in FIG. 2 (A), the lid member 6 and the mold member are joined together with the sealing action of the seal ring 17 provided on the lid member 6. Airtightness with 1 increases. Around this, the large-diameter portion 15 of the pin 5 fixed to the upper moving plate 12 contacts the opening 4 of the molded product 2 and closes the opening 4. At this position, the upper moving platen 12 stops.

When the lowering of the upper movable platen 12 described above is completed or before the lowering of the upper movable platen 12 is completed, the lower movable platen 22 is raised. At this time, the claw 19 of the chuck 3 is in an open state, but when the claw 19 reaches one end (lower end) of the molded product 2, the lower moving platen 22 stops rising and the claw 19 is closed. As a result, as shown in FIG. 2B, the molded product 2 is held by the chuck 3. Then, from this state, air is blown into the closed space S formed by the lid member 6, the pin 5 and the mold 1 through the through hole 7 formed in the lid member 6. This air is blown to the boundary surface 8 between the molded product 2 and the mold 1, so that this air is blown to this boundary surface 8 from the end (upper end) of the molded product 2. Peeling is started.

When this air is blown, the chuck 3 holding the lower end of the molded product 2 is lowered. Then, air gradually enters the boundary surface 8 between the molded product 2 and the mold 1 where the peeling has started, and at the same time, the lower end of the molded product 2 is pulled by the chuck 3, so that the peeling effect is further increased. Will increase. Therefore, even if the adhesive force between the molded product 2 and the mold 1 is large, the molded product 2 is smoothly separated from the mold 1 by the blowing of air and the pulling action of the chuck 3. When the lower moving platen 22 to which the chuck 3 is fixed reaches the lower limit, the molded product 2 is opened, and the upper moving plate 12 also rises, waiting for the arrival of the next die at the upper limit.

As described above, according to the mold releasing apparatus of the present embodiment, not only the releasing operation of the molded product but also the blowing of air is added so that the peeling effect is enhanced, and as a result, the molded product is damaged. It is possible to quickly release the mold without giving. In addition, by automating the demolding work in this way, it is possible to reduce the cost by manpower, and also to reduce the maintenance of the work environment and the facility cost related to safety equipment required for the worker. it can. It should be noted that the present invention is not limited to the above-described embodiments, but can be variously modified without departing from the gist of the present invention.

[0023]

[Effect of device]

 The product releasing apparatus of the present invention grips one end of the product with a chuck, forms a closed space with a pin, a lid material and a mold, and forms a fluid at the interface between the product and the mold in the closed space. Since the mold is supplied, it is possible to automate the mold release work while performing the mold release quickly without damaging the product. Therefore, the manual work can be eliminated and the product cost can be reduced. At the same time, it is not necessary for workers to maintain the work environment and deploy safety equipment, which reduces equipment costs.

[Brief description of drawings]

FIG. 1 is a front view showing a product releasing apparatus according to an embodiment of the present invention.

2A and 2B are cross-sectional views of a main part for explaining the operation of the embodiment.

FIG. 3 is a cross-sectional view showing a product and a mold applied to the mold releasing apparatus of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mold 2 ... Product (molded product) 3 ... Chuck 4 ... Opening 5 ... Pin 6 ... Lid material 7 ... Through hole 8 ... Boundary surface (adhesion surface) 9 ... Chassis 10 ... Base 11 ... Small diameter part 12 ... Upper part Moving plate 13 ... Slide guide 14 ... Fluid cylinder 15 ... Large diameter part 16 ... Spring 17 ... Seal ring 18 ... Hose elbow 19 ... Claw 20 ... Housing 21 ... Air supply port 22 ... Lower moving plate 23 ... Slide guide 24 ... Fluid cylinder

Claims (1)

[Scope of utility model registration request] 1. A pin (1) provided with a chuck (3) for holding one end of a product (2) attached to a mold (1) so as to be movable toward and away from the product (2), and closing an opening (4) of the product. (5) and the mold (1) in contact with the mold (1) and the pin (5)
A lid member (6) that forms a closed space (S) is provided so as to be able to move toward and away from the product, and the closed space (S) is provided through a through hole (7) formed in the lid member (6). A mold releasing apparatus for a product, characterized in that a fluid is supplied to a boundary surface (8) between the product (2) and the mold (1).