External oil cylinder drag hook demolding mechanism for large internal parting type automobile bumper mold

Abstract

The utility model provides an external oil cylinder drag hook demolding mechanism of a large internal parting type automobile bumper mold, and belongs to the technical field of molds. The die comprises an upper die plate and a lower die plate, a forming cavity is arranged between the upper die plate and the lower die plate, and a plurality of hollow parts are arranged on a lower forming surface forming the forming cavity on the lower die plate. The inner and outer side synchronous glue feeding structure can feed glue into a forming cavity from multiple points of the inner side and the outer side of the forming cavity during injection molding, so that the injection molding efficiency can be improved, after a product is subjected to injection molding, an external oil cylinder driving mechanism can drive a top plate to vertically and upwards move, and the top plate vertically and upwards moves to drive a middle insert to upwards move to eject the product through a first straight ejector rod; and meanwhile, when the top plate moves upwards, the drag hook demolding structure can also horizontally move towards the position close to the center of the lower mold plate while ejecting the product out, so that the parting surface of the lower mold plate is separated from the inner side of the bumper product, and the parting surface of the product is prevented from being damaged due to pulling.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an external oil cylinder hook demoulding mechanism for a large internally-parted automobile bumper mold. Background Art

[0002] Automobile bumpers are generally molded by injection molding. Due to the large area of ​​automobile bumpers, multi-point injection is often used during injection molding. However, the injection molding mechanism of automobile bumpers in the prior art mostly injects glue into the molding cavity from the outside of the molding cavity, and the injection efficiency is low.

[0003] For example, a Chinese patent discloses an automobile bumper mold [application number: 201621264804.3], which includes a movable mold plate and a fixed mold plate. The sides of the movable mold plate and the fixed mold plate are both provided with lifting holes. The lifting hole of the movable mold plate is provided with a movable mold lifting part, and the lifting hole of the fixed mold plate is provided with a fixed mold lifting part. The fixed mold lifting part includes a fixed mold lifting plate fixed on the lifting hole, and a rope fixing part rotatably connected to the fixed mold lifting plate. The fixed mold lifting plate is provided with a ratchet mechanism for driving the rope fixing part to rotate unidirectionally to wind the rope. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a demoulding mechanism for a large-scale internally split automobile bumper mold with an external oil cylinder hook.

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

[0006] A large-scale internally-parted automobile bumper mold externally-mounted oil cylinder draw hook demoulding mechanism comprises an upper template and a lower template, a molding cavity is arranged between the upper template and the lower template, a lower molding surface of the lower template constituting the molding cavity is provided with a plurality of hollow parts, an inner and outer synchronous glue feeding structure is arranged on the upper side of the upper template, a top plate driven by an external oil cylinder driving mechanism is arranged on the lower side of the lower template, a middle insert driven by a plurality of No. 1 straight ejector rods is arranged in the middle position of the lower template, and draw hook demoulding structures connected to the top plate are arranged on both sides of the middle insert.

[0007] In the above-mentioned large-scale internally-parted automobile bumper mold external cylinder hook demoulding mechanism, the internal and external synchronous glue feeding structure includes an injection liquid diverter plate arranged on the upper side of the upper mold plate, and the bottom of the injection liquid diverter plate is fixedly connected with a plurality of internal injection tubes connected to the internal glue feeding channel arranged on the hollow part and a plurality of external injection tubes connected to the external glue feeding channel arranged on the outer side of the lower molding surface.

[0008] In the above-mentioned large-scale internal parting automobile bumper mold external cylinder hook demoulding mechanism, the hook demoulding structure includes two side inserts symmetrically arranged on both sides of the lower template, the top of the side insert is against the bottom of the middle insert, and the bottom of the side insert is connected to the top plate through a number of No. 1 inclined push rods. A hook guide structure is also provided between the side insert and the lower template.

[0009] In the above-mentioned large internal parting automobile bumper mold external cylinder hook demoulding mechanism, the hook guide structure includes a plurality of guide seats fixed on the side of the lower mold plate, the guide seats are protruding with guide blocks, and the inner end of the side insert is provided with a guide rod that slides with the guide block.

[0010] In the above-mentioned large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, the lower section of the guide block is the inner pulling section.

[0011] In the above-mentioned large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, when the guide rod moves from bottom to top on the inner pull section, the side insert moves horizontally toward the center of the lower mold plate.

[0012] In the above-mentioned large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, the lower mold plate is also provided with a combined straight and inclined top assembly.

[0013] In the above-mentioned large internally-parted automobile bumper mold external oil cylinder hook demoulding mechanism, the combined straight inclined ejector assembly includes a plurality of inclined ejector blocks embedded in the lower mold plate, and the inclined ejector blocks are connected to the ejector plate through a plurality of No. 2 inclined ejector rods.

[0014] In the above-mentioned large internal parting automobile bumper mold external oil cylinder hook demoulding mechanism, the combined straight and inclined ejector assembly also includes a plurality of straight ejector blocks embedded in the lower mold plate, and the bottom of the straight ejector block is connected to the ejector plate through a No. 2 straight ejector rod.

[0015] In the above-mentioned large-scale internal parting automobile bumper mold external cylinder hook demoulding mechanism, the external cylinder drive mechanism includes four lifting cylinders arranged on the side of the lower mold plate, and the output shaft ends of the lifting cylinders are connected to the top plate.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The internal and external synchronous glue feeding structure can feed glue into the molding cavity from multiple points inside and outside the molding cavity during injection molding, thereby improving the injection molding efficiency. After the product is injection molded, the external cylinder drive mechanism can drive the top plate to move vertically upward. The vertical upward movement of the top plate can drive the middle insert to move upward through the No. 1 straight ejector rod to eject the product. At the same time, when the top plate moves upward, the pull hook demoulding structure can also move horizontally to a position close to the center of the lower template while ejecting the product, so that the parting surface of the lower template is separated from the inner side of the bumper product, so as to prevent the parting surface of the product from being pulled and damaged.

[0018] 2. During product injection molding, the injection liquid diverter plate can divert the injection liquid. After diversion, the liquid can be injected into the molding cavity from both sides of the molding cavity through the inner injection molding tube and the inner glue inlet channel as well as the outer injection molding tube and the outer glue inlet channel, thereby improving the injection molding efficiency of the product.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the utility model;

[0022] Figure 3 It is a structural diagram of the lower template;

[0023] Figure 4 It is a schematic diagram of the local structure of the lower template;

[0024] Figure 5 It is a structural schematic diagram of a draw hook demoulding structure.

[0025] In the figure, an upper template 1, a lower template 2, a lower molding surface 3, a hollow portion 4, an inner and outer synchronous glue feeding structure 5, an external cylinder driving mechanism 6, a top plate 7, an intermediate insert 8, a draw hook demoulding structure 9, an injection liquid diverter plate 10, an inner glue feeding channel 11, an inner injection molding tube 12, an outer glue feeding channel 13, an outer injection molding tube 14, a side insert 15, a guide seat 17, a guide block 18, a guide pull rod 19, an inner pulling section 20, an inclined top block 21, a straight top block 22, and a lifting cylinder 23. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5As shown, a large-scale internal parting automobile bumper mold external cylinder hook demoulding mechanism comprises an upper template 1 and a lower template 2, a molding cavity is arranged between the upper template 1 and the lower template 2, a lower molding surface 3 of the lower template 2 constituting the molding cavity has a plurality of hollow parts 4, an inner and outer synchronous glue feeding structure 5 is arranged on the upper side of the upper template 1, a top plate 7 driven by an external cylinder driving mechanism 6 is arranged on the lower side of the lower template 2, an intermediate insert 8 driven by a plurality of No. 1 straight ejector rods is arranged in the middle position of the lower template 2, and hook demoulding structures 9 connected to the top plate 7 are arranged on both sides of the intermediate insert 8.

[0027] In the utility model, the internal and external synchronous glue feeding structure 5 can feed glue into the molding cavity from multiple points inside and outside the molding cavity during injection molding, thereby improving the injection molding efficiency. After the product is injection molded, the external cylinder drive mechanism 6 can drive the top plate to move vertically upward. The vertical upward movement of the top plate can drive the middle insert 8 to move upward to eject the product through the No. 1 straight ejector rod. At the same time, when the top plate moves upward, the pull hook demoulding structure 9 can also move horizontally to a position close to the center of the lower template while ejecting the product, so that the parting surface of the lower template is separated from the inner side of the bumper product, so as to prevent the parting surface of the product from being pulled and damaged.

[0028] Specifically, the internal and external synchronous glue feeding structure 5 includes an injection liquid diverter plate 10 arranged on the upper side of the upper mold plate 1, and the bottom of the injection liquid diverter plate 10 is fixedly connected with a plurality of internal injection molding tubes 12 connected to the internal glue feeding channel 11 arranged on the hollow portion 4 and a plurality of external injection molding tubes 14 connected to the external glue feeding channel 13 arranged on the outer side of the lower molding surface 3. When the product is injected, the injection liquid diverter plate can divert the injection liquid, and after diversion, the injection liquid can be fed into the molding cavity from the inner and outer sides of the molding cavity through the internal injection molding tubes and the internal glue feeding channel as well as the external injection molding tubes and the external glue feeding channel, thereby improving the injection molding efficiency of the product.

[0029] Specifically, the draw hook demoulding structure 9 includes two side panels 15 symmetrically arranged on both sides of the lower template 2, the top of the side panel 15 is against the bottom of the middle panel 8, the bottom of the side panel 15 is connected to the top plate 7 through a number of No. 1 inclined top rods, and a draw hook guide structure is also provided between the side panel 15 and the lower template 2, the draw hook guide structure includes a number of guide seats 17 fixed on the side of the lower template 2, and a guide block 18 is protruding from the guide seat 17. The inner end of the side panel 15 is provided with a guide rod 19 that slides with the guide block 18, and the lower section of the guide block 18 is an inner pull section 20. When the guide rod 19 moves from bottom to top on the inner pull section 20, the side panel 15 moves horizontally toward the center of the lower template 2. When the top plate moves upward, a plurality of No. 1 inclined push rods can be used to apply an oblique upward thrust to the side panels. When the side panels move upward, the cooperation between the guide pull rod 19 and the inner pull section on the guide block 18 can enable the side panels to produce a horizontal displacement close to the center of the downward template, thereby enabling the side panels to be separated from the inner side wall of the product to prevent the side of the product from being pulled and damaged.

[0030] Specifically, the lower template 2 is also provided with a combined straight inclined ejector assembly, which includes a plurality of inclined ejector blocks 21 embedded in the lower template 2, and the inclined ejector blocks 21 are connected to the ejector plate 7 through a plurality of No. 2 inclined ejector rods. The combined straight inclined ejector assembly also includes a plurality of straight ejector blocks 22 embedded in the lower template 2, and the bottom of the straight ejector blocks 22 are connected to the ejector plate 7 through the No. 2 straight ejector rods. When the ejector plate moves upward, the inclined ejector blocks can be driven to move upward obliquely through the plurality of No. 2 inclined ejector rods to apply an oblique upward thrust to the product. When the ejector plate moves upward, the No. 2 straight ejector rods can also drive the straight ejector blocks to move upward obliquely to apply a vertical upward thrust to the product, so as to assist the ejection and demoulding of the product.

[0031] Specifically, the external cylinder drive mechanism 6 includes four lifting cylinders 23 disposed on the side of the lower template 2, and the output shaft ends of the lifting cylinders 23 are connected to the top plate 7. The synchronous action of the four lifting cylinders can drive the top plate to move vertically upward.

[0032] The working principle of the utility model is as follows: the internal and external synchronous glue feeding structure 5 can feed glue into the molding cavity from multiple points inside and outside the molding cavity during injection molding, thereby improving the injection molding efficiency. After the product is injection molded, the external oil cylinder driving mechanism 6 can drive the top plate to move vertically upward. The vertical upward movement of the top plate can drive the middle insert 8 to move upward to eject the product through the No. 1 straight ejector rod. At the same time, when the top plate moves upward, the pull hook demoulding structure 9 can also move horizontally to a position close to the center of the lower template while ejecting the product, so that the parting surface of the lower template is separated from the inner side of the bumper product, so as to prevent the parting surface of the product from being pulled and damaged;

[0033] During product injection molding, the injection liquid diverter plate can divert the injection liquid, and after diversion, the liquid can be fed into the molding cavity from both the inner and outer sides of the molding cavity through the inner injection tube and the inner glue feed channel as well as the outer injection tube and the outer glue feed channel, thereby improving the injection molding efficiency of the product. When the top plate moves upward, a plurality of No. 1 inclined ejector rods can be used to apply an oblique upward thrust to the side inserts. When the side inserts move upward, the cooperation of the guide pull rod 19 and the inner pull section on the guide block 18 can make the side inserts move in the horizontal direction toward the center of the downward template, thereby making the side inserts detach from the inner side wall of the product to prevent the side of the product from being pulled and damaged;

[0034] When the top plate moves upward, several No. 2 inclined ejector rods can also drive the inclined ejector block to move upward obliquely to apply an oblique upward thrust to the product. When the top plate moves upward, the No. 2 straight ejector rods can also drive the straight ejector block to move upward to apply a vertical upward thrust to the product to assist in ejecting the product from the mold. The synchronous action of the four lifting cylinders can drive the top plate to move vertically upward.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0036] Although this article uses the upper template 1, lower template 2, lower molding surface 3, hollow part 4, inner and outer synchronous glue feeding structure 5, external cylinder drive mechanism 6, top plate 7, middle insert 8, hook demolding structure 9, injection liquid diverter plate 10, inner glue feeding channel 11, inner injection molding tube 12, outer glue feeding channel 13, outer injection molding tube 14, side insert 15, guide seat 17, guide block 18, guide pull rod 19, inner pull section 20, inclined top block 21, straight top block 22, lifting cylinder 23 and the like more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: A molding cavity is provided between the upper mold plate (1) and the lower mold plate (2); a plurality of hollow portions (4) are provided on the lower molding surface (3) of the lower mold plate (2) constituting the molding cavity; an inner and outer synchronous glue feeding structure (5) is provided on the upper side of the upper mold plate (1); a top plate (7) driven by an external oil cylinder driving mechanism (6) is provided on the lower side of the lower mold plate (2); a middle insert (8) driven by a plurality of No. 1 straight push rods is provided in the middle position of the lower mold plate (2); and a draw hook demoulding structure (9) connected to the top plate (7) is provided on both sides of the middle insert (8).

2. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 1 is characterized in that: The inner and outer synchronous glue feeding structure (5) comprises an injection liquid diverter plate (10) arranged on the upper side of the upper mold plate (1), and the bottom of the injection liquid diverter plate (10) is fixedly connected with a plurality of inner injection tubes (12) connected to the inner glue feeding channel (11) arranged on the hollow part (4) and a plurality of outer injection tubes (14) connected to the outer glue feeding channel (13) arranged on the outer side of the lower molding surface (3).

3. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 2 is characterized in that: The draw hook demoulding structure (9) comprises two side inserts (15) symmetrically arranged on both sides of the lower template (2), the top of the side insert (15) abuts against the bottom of the middle insert (8), the bottom of the side insert (15) is connected to the top plate (7) through a plurality of No. 1 inclined push rods, and a draw hook guide structure is also provided between the side insert (15) and the lower template (2).

4. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 3 is characterized in that: The hook guide structure comprises a plurality of guide seats (17) fixed on the side of the lower template (2), a guide block (18) protruding from the guide seat (17), and a guide rod (19) slidably matched with the guide block (18) is provided at the inner end of the side insert (15).

5. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 4 is characterized in that: The lower section of the guide block (18) is an inner pull section (20).

6. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 5 is characterized in that: When the guide pull rod (19) moves from bottom to top on the inner pull section (20), the side panel block (15) moves horizontally toward the center of the lower template (2).

7. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 6 is characterized in that: The lower template (2) is also provided with a combined straight and inclined top assembly.

8. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 7 is characterized in that: The combined straight inclined roof assembly comprises a plurality of inclined roof blocks (21) embedded in the lower template (2), and the inclined roof blocks (21) are connected to the roof plate (7) via a plurality of No. 2 inclined roof rods.

9. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 8, characterized in that: The combined straight-inclined roof assembly further comprises a plurality of straight roof blocks (22) embedded in the lower template (2), and the bottom of the straight roof blocks (22) is connected to the roof plate (7) via a second straight roof rod.

10. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 9, characterized in that: The external cylinder drive mechanism (6) comprises four lifting cylinders (23) arranged on the side of the lower template (2), and the output shaft ends of the lifting cylinders (23) are connected to the top plate (7).

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