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, and a forming cavity with large inner parting surfaces on two sides is arranged between the upper die plate and the lower die plate. After a product is subjected to injection molding, the external oil cylinder demolding assembly can drive the upper mold plate and the lower ejection plate to synchronously move upwards, and when the lower ejection plate moves upwards, the side insert can be driven by the first inclined ejection rod to obliquely move upwards, so that a large inner parting surface on the side insert can be separated from the product; the middle insert can be driven to move upwards through the side insert and the first straight ejector rod, and the secondary ejection assembly moves along with the side insert and the middle insert when the side insert and the middle insert move upwards; and the side inserts and the middle insert move upwards to separate the product from the connecting part, except the combined insert structure, of the lower template.

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 mold injection. Since there are large internal parting surfaces on both sides of the automobile bumper, the connection between the large internal parting surface and the lower template is infinitely close to vertical during injection molding. This causes a huge pulling force between the large internal parting surface and the lower template when the product is ejected, which can easily cause product damage.

[0003] For example, a Chinese patent discloses a motor housing with shock-absorbing and noise-reducing functions [application number: 201710648960.2], which includes a base. The interior of the base is a hollow structure, and the tops of both ends of the base are fixedly connected to side panels by fixing bolts, the tops of the side panels are fixedly connected to the top panels, and the inner walls of the top ends of the side panels are fixedly connected to a fixed shaft, and a number of silencer blades are movably connected to the fixed shaft; two brackets are fixedly connected to the base, and the two brackets are located between the two side panels, and the brackets are movably connected to the rotor through bearings, and the outer wall of the rotor is movably connected to a shock-absorbing baffle, and the shock-absorbing baffle is fixedly connected to a rotor shock-absorbing spring, and the other end of the rotor shock-absorbing spring is fixedly connected to the side wall of the bracket, and the bottoms of the two brackets are provided with fixing pins, which penetrate the base and extend to the inner cavity of the base, and the outer walls of the two fixing pins are fixedly connected to fixing pin shock-absorbing springs, and the other ends of the fixing pin shock-absorbing springs are fixedly connected to the side walls of the inner cavity of the base. 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 internal parting automobile bumper mold external oil cylinder draw hook demoulding mechanism comprises an upper template and a lower template, a molding cavity with large internal parting surfaces on both sides is arranged between the upper template and the lower template, a combined insert structure constituting the molding cavity is arranged on the lower template, the combined insert structure comprises a middle insert and two side inserts arranged on both sides of the middle insert, the large internal parting surface is formed on the side insert, a lower top plate driven by an external oil cylinder demoulding assembly is arranged on the lower side of the lower template, a plurality of No. 1 inclined ejector rods connected to the side inserts and a plurality of No. 1 straight ejector rods connected to the middle inserts are arranged on the lower top plate, and a secondary ejection assembly is also arranged on the lower top plate.

[0007] In the above-mentioned large-scale internal-parting automobile bumper mold external cylinder hook demoulding mechanism, the external cylinder demoulding assembly includes four driving cylinders fixed on the lower mold plate, the output shaft of the driving cylinder is arranged downward and the end is connected to the lower top plate, and the lower top plate is also connected to an outer rod, and the upper part of the outer rod is against the connecting block arranged on the upper mold plate.

[0008] In the above-mentioned large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, the lower mold plate is provided with a limit plate that slidably cooperates with the outer rod.

[0009] In the above-mentioned large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, three movable inserts are further arranged in the side inserts, and the movable inserts are connected to the lower mold plate through a hook guide structure.

[0010] In the above-mentioned large-scale internal parting automobile bumper mold external cylinder hook demoulding mechanism, the hook guide structure includes a guide seat fixed on the lower mold plate, the guide seat is provided with a guide rail with an inner pulling section, and the inner end of the movable insert is fixedly connected with a hook that slides with the guide rail.

[0011] In the above-mentioned large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, both sides of the side insert block are provided with limiting pressure plates fixedly connected to the lower mold plate.

[0012] In the above-mentioned large-scale internally-parted automobile bumper mold external oil cylinder hook demoulding mechanism, the secondary ejection assembly includes an upper top plate arranged on the upper side of the lower top plate, the lower top plate is also provided with a lifting assembly connected to the upper top plate, and the upper top plate is also provided with a straight and inclined top combined ejection assembly.

[0013] In the above-mentioned large-scale internally split automobile bumper mold external oil cylinder hook demoulding mechanism, the lifting assembly includes a plurality of lifting drivers fixed on the lower top plate, and the output shaft end of the lifting driver is connected to the upper top plate.

[0014] In the above-mentioned large internally split automobile bumper mold external oil cylinder hook demoulding mechanism, the straight inclined ejector combined ejection assembly includes a plurality of inclined ejector blocks arranged on the middle insert, and the inclined ejector blocks are connected to the upper ejector plate through the second inclined ejector rod.

[0015] In the above-mentioned large internally-parted automobile bumper mold external oil cylinder hook demoulding mechanism, the straight-slanted ejector combined ejection assembly also includes a plurality of straight ejector blocks arranged on the middle insert, and the straight ejector blocks are connected to the upper ejector plate through a No. 2 straight ejector rod.

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

[0017] 1. After the product is injection molded, the external oil cylinder demoulding assembly can drive the upper template and the lower ejector plate to move upward synchronously. When the lower ejector plate moves upward, the side panel can be driven to move upward obliquely through the No. 1 inclined ejector rod, so that the large inner parting surface on the side panel can be separated from the product to prevent the large inner parting surface from being damaged due to the large pulling force during ejection. The middle panel can also be driven to move upward through the side panel and the No. 1 straight ejector rod. When the side panel and the middle panel move upward, the secondary ejection assembly moves together. The upward movement of the side panel and the middle panel can separate the connection between the product and the lower template except the combined insert structure. Subsequently, after the upper template is fixed by external equipment, the external oil cylinder demoulding assembly drives the lower ejector plate to descend to separate the product from the upper template. Finally, the product and the middle panel can be separated through the secondary ejection assembly.

[0018] 2. The synchronous action of the four driving cylinders can drive the lower top plate to move vertically upward. The vertical upward movement of the lower top plate can drive the outer rod to move upward. The upward movement of the outer rod can push the connecting block to move upward, so that the upper template can move upward. When the upper template and the lower template are separated, after the upper template is fixed by external equipment, the four driving cylinders drive the lower top plate to descend to separate the product from the upper template.

[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 structural diagram of the lower template;

[0022] Figure 3 It is a structural schematic diagram of a combined inlay structure;

[0023] Figure 4 It is a schematic diagram of the structure of the secondary ejection assembly;

[0024] Figure 5 yes Figure 4 A magnified schematic diagram of center A.

[0025] In the figure, an upper template 1, a lower template 2, a large inner parting surface 3, a combined insert structure 4, a middle insert 5, a side insert 6, an external cylinder demoulding assembly 7, a lower ejector plate 8, a No. 1 inclined ejector rod 9, a No. 1 straight ejector rod 10, a secondary ejection assembly 11, a driving cylinder 12, an outer rod 13, a limit plate 14, a movable insert 15, a guide seat 16, an inner pulling section 17, a guide rail 18, a draw hook 19, a limit pressure plate 20, an upper ejector plate 21, an inclined ejector block 22, a No. 2 inclined ejector rod 23, a straight ejector block 24, and a No. 2 straight ejector rod 25. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As 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 with large internal parting surfaces 3 on both sides is arranged between the upper template 1 and the lower template 2, a combined insert structure 4 constituting the molding cavity is arranged on the lower template 2, the combined insert structure 4 comprises a middle insert 5 and two side inserts 6 arranged on both sides of the middle insert 5, the large internal parting surface 3 is formed on the side insert 6, a lower top plate 8 driven by an external cylinder demoulding assembly 7 is arranged on the lower side of the lower template 2, a plurality of No. 1 inclined ejector rods 9 connected to the side inserts 6 and a plurality of No. 1 straight ejector rods 10 connected to the middle insert 5 are arranged on the lower top plate 8, and a secondary ejection assembly 11 is also arranged on the lower top plate 8.

[0027] In the utility model, after the product is injection molded, the external oil cylinder demoulding assembly 7 can drive the upper template and the lower top plate to move upward synchronously. When the lower top plate moves upward, the side panel 6 can be driven to move obliquely upward through the No. 1 inclined ejector rod 9, so that the large inner parting surface on the side panel and the product can be separated to prevent the large pulling force at the large inner parting surface from being damaged during ejection. The middle panel can also be driven to move upward through the side panel and the No. 1 straight ejector rod. When the side panel and the middle panel move upward, the secondary ejection assembly 11 moves along with them. The upward movement of the side panel and the middle panel can separate the connection parts of the product from the lower template except the combined panel structure. Subsequently, after the upper template is fixed by an external device, the external oil cylinder demoulding assembly 7 drives the lower top plate 8 to descend to separate the product from the upper template. Finally, the product and the middle panel can be separated through the secondary ejection assembly 11.

[0028] Specifically, the external oil cylinder demoulding assembly 7 includes four driving oil cylinders 12 fixed on the lower template 2, the output shaft of the driving oil cylinder 12 is arranged downward and the end is connected to the lower top plate 8, and the lower top plate 8 is also connected to an outer rod 13, and the upper part of the outer rod 13 is against the connection block arranged on the upper template 1. The four driving oil cylinders can drive the lower top plate to move vertically upward by synchronous action, and the vertical upward movement of the lower top plate can drive the outer rods to move upward, and the upward movement of the outer rods can push the connection block to move upward so that the upper template can move upward. When the upper template and the lower template are separated, after the upper template is fixed by external equipment, the four driving oil cylinders drive the lower top plate to descend to separate the product from the upper template.

[0029] Preferably, a limiting plate 14 is provided on the lower template 2 and is slidably matched with the outer rod 13. The limiting plate 14 can limit the outer rod.

[0030] Preferably, three movable inserts 15 are further provided in the side insert 6, and the movable inserts 15 are connected to the lower template 2 through a hook guide structure. When the side insert moves obliquely upward, the three movable inserts can move to the inner side of the lower template under the action of the hook guide structure to separate the movable inserts from the product.

[0031] Specifically, the hook guide structure includes a guide seat 16 fixed on the lower template 2, a guide rail 18 with an inner pull section 17 is provided on the guide seat 16, and a hook 19 that is slidably matched with the guide rail 18 is fixedly connected to the inner end of the movable insert 15. When the hook moves to the inner pull section on the guide rail with the side insert, the hook can be moved to the inner side of the lower template under the guidance of the inner pull section, and the movement of the hook to the inner side of the lower template can drive the movable insert to move to the inner side of the lower template.

[0032] Preferably, limiting pressure plates 20 fixedly connected to the lower template 2 are provided on both sides of the side insert 6, and the limiting pressure plates can limit the position of the side insert.

[0033] Specifically, the secondary ejection assembly 11 includes an upper top plate 21 arranged on the upper side of the lower top plate 8, and the lower top plate 8 is also provided with a lifting assembly connected to the upper top plate 21, and the upper top plate 21 is also provided with a straight-oblique top combined ejection assembly, the lifting assembly includes a plurality of lifting drivers fixed on the lower top plate 8, and the output shaft end of the lifting driver is connected to the upper top plate 21, and the straight-oblique top combined ejection assembly includes a plurality of inclined ejector blocks 22 arranged on the middle insert 5, and the inclined ejector blocks 22 are connected to the upper top plate 21 through the second inclined ejector rod 23, and the straight-oblique top combined ejection assembly also includes a plurality of straight ejector blocks 24 arranged on the middle insert 5, and the straight ejector blocks 24 are connected to the upper top plate 21 through the second straight ejector rod 25. The lifting drive fixed on the lower top plate 8 can drive the upper top plate to move vertically upward. The upward movement of the upper top plate can drive the inclined top block to apply an oblique upward thrust to the product through the No. 2 inclined top rod 23, and can also drive the straight top block to apply a vertical upward thrust to the product through the No. 2 straight top rod, thereby separating the product and the middle insert.

[0034] Those skilled in the art should understand that the lifting drive may be an oil cylinder, an air cylinder or a linear motor, etc.

[0035] The working principle of the utility model is as follows: after the product is injection molded, the external oil cylinder demoulding assembly 7 can drive the upper template and the lower top plate to move upward synchronously. When the lower top plate moves upward, the side panel 6 can be driven to move obliquely upward through the No. 1 inclined ejector rod 9, so that the large inner parting surface on the side panel and the product can be separated, so as to prevent the large inner parting surface from being damaged due to the large pulling force when ejecting. The middle panel can also be driven to move upward through the side panel and the No. 1 straight ejector rod. When the side panel and the middle panel move upward, the secondary ejection assembly 11 moves together. The upward movement of the side panel and the middle panel can separate the connection part of the product from the lower template except the combined panel structure. Subsequently, after the upper template is fixed by an external device, the external oil cylinder demoulding assembly 7 drives the lower top plate 8 to descend so that the product can be separated from the upper template. Finally, the product can be separated from the middle panel through the secondary ejection assembly 11.

[0036] The synchronous action of the four driving cylinders can drive the lower top plate to move vertically upward, and the vertical upward movement of the lower top plate can drive the outer rod to move upward. The upward movement of the outer rod can push the connecting block to move upward so that the upper template can move upward. When the upper template and the lower template are separated, after the upper template is fixed by external equipment, the four driving cylinders drive the lower top plate to descend so that the product and the upper template can be separated. The limit plate 14 can limit the outer rod. When the side insert moves obliquely upward, the three movable inserts can move to the inner side of the lower template under the action of the hook guide structure so that the movable insert and the product are separated. When the hook moves to the inner pulling section on the guide rail with the side insert, the hook can be moved to the inner side of the lower template under the guiding action of the inner pulling section. The movement of the hook to the inner side of the lower template can drive the movable insert to move to the inner side of the lower template;

[0037] The lifting drive fixed on the lower top plate 8 can drive the upper top plate to move vertically upward. The upward movement of the upper top plate can drive the inclined top block to apply an oblique upward thrust to the product through the No. 2 inclined top rod 23, and can also drive the straight top block to apply a vertical upward thrust to the product through the No. 2 straight top rod, thereby separating the product and the middle insert.

[0038] 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.

[0039] Although this article uses the upper template 1, lower template 2, large internal parting surface 3, combined insert structure 4, middle insert 5, side insert 6, external cylinder demoulding assembly 7, lower ejector plate 8, No. 1 inclined ejector rod 9, No. 1 straight ejector rod 10, secondary ejection assembly 11, driving cylinder 12, outer rod 13, limit plate 14, movable insert 15, guide seat 16, inner pulling section 17, guide rail 18, draw hook 19, limit pressure plate 20, upper ejector plate 21, inclined ejector block 22, No. 2 inclined ejector rod 23, straight ejector block 24, No. 2 straight ejector rod 25, etc. 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 having large inner parting surfaces (3) on both sides is arranged between the upper mold plate (1) and the lower mold plate (2); a combined insert structure (4) constituting the molding cavity is arranged on the lower mold plate (2); the combined insert structure (4) comprises a middle insert (5) and two side inserts (6) arranged on both sides of the middle insert (5); the large inner parting surface (3) is formed on the side inserts (6); a lower ejector plate (8) driven by an external oil cylinder demoulding assembly (7) is arranged on the lower side of the lower mold plate (2); a plurality of first inclined ejector rods (9) connected to the side inserts (6) and a plurality of first straight ejector rods (10) connected to the middle inserts (5) are arranged on the lower ejector plate (8); a secondary ejector assembly (11) is also arranged on the lower ejector plate (8).

2. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 1 is characterized in that: The external cylinder demoulding assembly (7) comprises four driving cylinders (12) fixed on the lower template (2), the output shaft of the driving cylinder (12) is arranged downward and the end is connected to the lower top plate (8), and the lower top plate (8) is also connected to an outer rod (13), and the upper part of the outer rod (13) is against the connecting block arranged on the upper template (1).

3. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 2 is characterized in that: The lower template (2) is provided with a limiting plate (14) which is slidably matched with the outer rod (13).

4. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 2 is characterized in that: Three movable inserts (15) are also arranged inside the side insert (6), and the movable inserts (15) are connected to the lower template (2) via a hook guide structure.

5. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 4 is characterized in that: The draw hook guide structure comprises a guide seat (16) fixed on the lower template (2), a guide rail (18) having an inner pull section (17) is arranged on the guide seat (16), and a draw hook (19) which is slidably matched with the guide rail (18) is fixedly connected to the inner end of the movable insert (15).

6. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 5 is characterized in that: Position limiting pressing plates (20) fixedly connected to the lower template (2) are arranged on both sides of the side insert block (6).

7. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 5 is characterized in that: The secondary ejection assembly (11) comprises an upper top plate (21) arranged on the upper side of the lower top plate (8), the lower top plate (8) is also provided with a lifting assembly connected to the upper top plate (21), and the upper top plate (21) is also provided with a straight and inclined top combined ejection assembly.

8. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 7 is characterized in that: The lifting assembly comprises a plurality of lifting drivers fixed on the lower top plate (8), and the output shaft ends of the lifting drivers are connected to the upper top plate (21).

9. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 7, characterized in that: The straight-inclined ejector assembly comprises a plurality of inclined ejector blocks (22) arranged on the middle insert block (5), and the inclined ejector blocks (22) are connected to the upper ejector plate (21) via a second inclined ejector rod (23).

10. The large internal splitting automobile bumper mold external oil cylinder hook demoulding mechanism according to claim 9, characterized in that: The straight-and-slanted-roof combined ejection assembly further comprises a plurality of straight ejection blocks (24) arranged on the middle insert block (5), and the straight ejection blocks (24) are connected to the upper ejection plate (21) via a second straight ejection rod (25).

Images