Device for assisting injection molding product demolding of injection molding machine

Abstract

The utility model discloses a device for assisting an injection molding machine in demoulding injection products, which comprises a base, two fixing plates are symmetrically and fixedly mounted on the top surface of the base, an upper mould is fixedly mounted on the side surface of one fixing plate through a hydraulic oil cylinder, and a lower mould is fixedly mounted on the side surface of the other fixing plate through an assembly box. The two side faces of the lower mold are fixedly provided with gas collecting pipes, each gas collecting pipe is internally provided with a negative pressure mechanism, and the negative pressure mechanisms are connected with the upper mold. When the mold is used, the operation is simple, the sealing and automatic demolding effects of the lower mold can be further achieved through the approach and separation of the upper mold and the lower mold, and the mold is convenient to use. And the manufacturing cost of the automatic demolding device is reduced, and the automatic demolding device is friendly to small workshops or enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field related to injection molding machines, and in particular to a device for assisting the demoulding of injection-molded products of injection molding machines. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding machines are widely used in various industries as a rapid prototyping equipment. They have a history of more than 50 years in my country and are gradually becoming mature.

[0003] However, for some small workshops or enterprises, due to the high cost of automation, manual demoulding is still required, which greatly wastes manpower, and the skin is easily scratched during the demoulding process, and there are too many unsafe factors. Utility Model Content

[0004] The utility model aims to solve the problems in the background technology and proposes a device for assisting the demoulding of injection molding products of an injection molding machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for assisting the demoulding of injection molding products of an injection molding machine comprises a base, wherein two fixed plates are symmetrically fixedly installed on the top surface of the base, an upper mold is fixedly installed on the side of one of the fixed plates through a hydraulic cylinder, and a lower mold is fixedly installed on the side of the other fixed plate through an assembly box, and gas collecting pipes are fixedly installed on both sides of the lower mold, and a negative pressure mechanism is arranged in each of the gas collecting pipes, and the negative pressure mechanism is connected to the upper mold;

[0007] Two limiting frames are symmetrically installed in the assembly box, each of which is equipped with a rubber airbag, and the rubber airbag is connected to the corresponding air collecting pipe. The two rubber airbags are bonded with a connecting plate together, and a push rod is fixedly installed on the bottom of the connecting plate. The push rod penetrates the assembly box and the lower mold and extends outward, and a sealing steel ring is fixedly installed on one end of the push rod.

[0008] Preferably, the negative pressure mechanism comprises an extension column, and one end of the extension column is fixedly mounted on the side of the upper mold, and the other end of the extension column is mounted with two pistons.

[0009] Preferably, a top plate is commonly mounted on the top surfaces of the two fixed plates, a material barrel is fixedly mounted on the top surface of the top plate, and the material barrel is communicated with the lower mold.

[0010] Preferably, a plurality of support columns are symmetrically mounted on the bottom surface of the base, a support pad is provided at the bottom end of each support column, and a material drop chute is provided on the base.

[0011] Preferably, each of the limiting frames is provided with a sliding groove, and the connecting plate is slidably connected in the sliding groove.

[0012] Preferably, the two pistons are filled with sealing oil, and a control valve is installed on the barrel.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with an air collecting pipe, a piston, a rubber airbag and other devices, so that when the upper mold is away from the lower mold, the push rod is pushed outward, thereby pushing the model to fall off from the lower mold, thereby achieving the purpose of automatic demoulding. At the same time, when the upper mold is close to the lower mold, the push rod slides inward, thereby driving the sealing steel ring to seal the lower mold.

[0015] 2. The utility model realizes automatic demoulding of the injection molding machine without an additional driving device by arranging devices such as a piston and an extension column, which can greatly reduce the manufacturing cost of the device, especially for small workshops or enterprises.

[0016] In summary, the utility model is easy to operate when in use, can achieve the sealing and automatic demoulding effects of the lower mold by moving the upper mold and the lower mold closer and farther away, reduces the manufacturing cost of the automatic demoulding device, and is more friendly to small workshops or enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a device for assisting the demoulding of injection molding products of an injection molding machine proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the lower mold of a device for assisting the demoulding of injection molding products of an injection molding machine proposed by the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the assembly box of a device for assisting the demoulding of injection molding products of an injection molding machine proposed by the utility model;

[0020] Figure 4 The utility model discloses a schematic diagram of the cross-sectional structure of an air collecting pipe of a device for assisting in demoulding of injection-molded products of an injection molding machine.

[0021] In the figure: 1 base, 2 support column, 3 blanking chute, 4 fixed plate, 5 hydraulic cylinder, 6 top plate, 7 barrel, 8 upper mold, 9 lower mold, 10 assembly box, 11 air collecting pipe, 12 extension column, 13 piston, 14 limiting frame, 15 rubber airbag, 16 connecting plate, 17 push rod, 18 sealing steel ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-3 , a device for assisting the demoulding of injection molding products of an injection molding machine, comprising a base 1, a plurality of support columns 2 are symmetrically installed on the bottom surface of the base 1, a support pad is provided at the bottom end of each support column 2, a blanking trough 3 is provided on the base 1, the support pad is used to increase the support area of ​​the base 1, and at the same time, the base 1 is raised by the support column 2 to make room for the formed model to fall into an external conveyor belt or storage box through the blanking trough 3;

[0024] Two fixed plates 4 are symmetrically fixedly installed on the top surface of the base 1, an upper mold 8 is fixedly installed on the side of one of the fixed plates 4 through a hydraulic cylinder 5, and a lower mold 9 is fixedly installed on the side of the other fixed plate 4 through an assembly box 10. A top plate 6 is commonly installed on the top surfaces of the two fixed plates 4, a material barrel 7 is fixedly installed on the top surface of the top plate 6, and the material barrel 7 is connected to the lower mold 9. A control valve is installed on the material barrel 7, and the upper mold 8 is brought into contact with the lower mold 9 through the hydraulic cylinder 5, and then the material is filled into the lower mold 9 through the material barrel 7, and then extruded by the upper mold 8;

[0025] Gas collecting pipes 11 are fixedly installed on both sides of the lower mold 9, and each gas collecting pipe 11 is provided with a negative pressure mechanism, and the negative pressure mechanism is connected to the upper mold 8. The negative pressure mechanism includes an extension column 12, and one end of the extension column 12 is fixedly installed on the side of the upper mold 8, and the other end of the extension column 12 is installed with two pistons 13, and the two pistons 13 are filled with sealing oil. When the upper mold 8 moves toward the lower mold 9, the extension column 12 is pushed to slide in the gas collecting pipe 11, and the piston 13 is pushed to slide in the gas collecting pipe 11, and then air is supplied to the assembly box 10. When the upper mold 8 is away from the lower mold 9, the piston 13 slides, and then air is extracted from the assembly box 10;

[0026] Two limiting frames 14 are symmetrically installed in the assembly box 10, each limiting frame 14 is provided with a slide groove, and a connecting plate 16 is slidably connected in the slide groove, a rubber airbag 15 is installed in each limiting frame 14, and the rubber airbag 15 is connected to the corresponding air collecting pipe 11, and the two rubber airbags 15 are bonded with a connecting plate 16, and a push rod 17 is fixedly installed on the bottom surface of the connecting plate 16, and the push rod 17 passes through the assembly box 10 and the lower mold 9 and extends outward, and a sealing steel ring 18 is fixedly installed at one end of the push rod 17, through Air is supplied and exhausted in the rubber airbag 15, and the deformation of the rubber airbag 15 can push the connecting plate 16 to slide. When the upper mold 8 is close to the lower mold 9, the rubber airbag 15 supplies air, which drives the connecting plate 16 to slide outward, so that the sealing steel ring 18 is sealed with the lower mold 9, thereby facilitating injection molding. Then, when the upper mold 8 is away from the lower mold 9, the rubber airbag 15 is exhausted, which drives the connecting plate 16 to slide inward, so that the push rod 17 pushes the material in the lower mold 9, thereby realizing automatic demolding of the injection molded product.

[0027] When the utility model is used, the hydraulic cylinder 5 is started, thereby driving the upper mold 8 to approach the lower mold 9. When the upper mold 8 is inserted in the lower mold 9, the raw material can be injected into the lower mold 9 through the barrel 7. It is worth noting that when the upper mold 8 approaches the lower mold 9, the extension column 12 is driven to slide in the gas collecting pipe 11, thereby pushing the piston 13 to slide in the gas collecting pipe 11, and communicating with the rubber airbag 15 through the gas collecting pipe 11, and then through the sliding of the piston 13, the air in the gas collecting pipe 11 is injected into the rubber airbag 15, realizing the deformation of the rubber airbag 15, thereby driving the connecting plate 16 to slide outward, pulling the sealing steel ring 18 on the push rod 17 to seal the lower mold 9, and facilitating the injection molding in the barrel 7 and the lower mold 9;

[0028] When the injection molding is completed and the model in the mold has cooled down, the upper mold 8 can be moved away from the lower mold 9 by the hydraulic cylinder 5, and then the piston 13 can be pulled to slide again by the extension column 12, so that the rubber airbag 15 is deformed and becomes deflated, thereby driving the connecting plate 16 to slide inward, pushing the push rod 17 to be ejected outward, and then pushing the model to fall off from the lower mold 9, realizing automatic demolding.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for assisting the demoulding of a molded product of an injection molding machine, comprising a base (1), characterized in that: Two fixed plates (4) are symmetrically fixedly installed on the top surface of the base (1), an upper mold (8) is fixedly installed on the side of one of the fixed plates (4) via a hydraulic cylinder (5), and a lower mold (9) is fixedly installed on the side of the other fixed plate (4) via an assembly box (10), and gas collecting pipes (11) are fixedly installed on both sides of the lower mold (9), and each of the gas collecting pipes (11) is provided with a negative pressure mechanism, and the negative pressure mechanism is connected to the upper mold (8); Two limiting frames (14) are symmetrically installed in the assembly box (10), and each limiting frame (14) is installed with a rubber airbag (15), and the rubber airbag (15) is connected to the corresponding air collecting pipe (11), and the two rubber airbags (15) are bonded with a connecting plate (16) together, and a push rod (17) is fixedly installed on the bottom surface of the connecting plate (16), and the push rod (17) passes through the assembly box (10) and the lower mold (9) and extends outward, and a sealing steel ring (18) is fixedly installed on one end of the push rod (17).

2. The device for assisting the demoulding of injection molding products of an injection molding machine according to claim 1, characterized in that: The negative pressure mechanism comprises an extension column (12), one end of the extension column (12) is fixedly mounted on the side of the upper mold (8), and the other end of the extension column (12) is mounted with two pistons (13).

3. The device for assisting the demoulding of injection molding products of an injection molding machine according to claim 2, characterized in that: A top plate (6) is commonly mounted on the top surfaces of the two fixed plates (4), a material barrel (7) is fixedly mounted on the top surface of the top plate (6), and the material barrel (7) is connected to the lower mold (9).

4. The device for assisting the demoulding of injection molding products of an injection molding machine according to claim 3, characterized in that: A plurality of support columns (2) are symmetrically mounted on the bottom surface of the base (1), a support pad is provided at the bottom end of each support column (2), and a material drop trough (3) is provided on the base (1).

5. The device for assisting the demoulding of injection molding products of an injection molding machine according to claim 4, characterized in that: Each of the limiting frames (14) is provided with a sliding groove, and the connecting plate (16) is slidably connected in the sliding groove.

6. The device for assisting the demoulding of the injection molding product of the injection molding machine according to claim 5, characterized in that: The two pistons (13) are filled with sealing oil, and a control valve is installed on the barrel (7).

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