Injection mold for rear anti-collision beam support of automobile part

Abstract

The utility model discloses an injection mold for an automobile part rear anti-collision beam support, which relates to the technical field of injection mold structures, and comprises a lower mold, an upper mold and a convex mold, an auxiliary demolding assembly is arranged on the lower mold, and the auxiliary demolding assembly comprises a first sliding chute formed in the center of the upper end of the lower mold; a female die is connected into an inner cavity of the first sliding groove in a sliding mode. According to the anti-collision beam injection molding mold, the auxiliary demolding assembly is arranged, and after the heating coil is simply heated for a while, the auxiliary demolding assembly can be used for demolding a plastic anti-collision beam adhered and solidified in the lower mold, so that the problem that when the anti-collision beam and a molding mold in the lower mold are adhered, the anti-collision beam cannot be separated from the molding mold in the conventional anti-collision beam injection molding mold is solved; the problems that the plastic anti-collision beam needs to be manually pulled down by a worker through tools such as a clamp, labor and time are wasted, the production efficiency is influenced, and the wall surface of a mold is easily damaged are solved, so that the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold structure, in particular to an injection mold for a rear anti-collision beam bracket of an automobile accessory. Background Art

[0002] In the production of plastic parts, mold injection molding is a processing method used in mass production of plastic parts. The specific principle is: the heated and melted plastic raw materials are pushed by the injection molding machine screw under high pressure into the mold cavity of the plastic mold. After cooling and solidification, a plastic molded product is obtained. The common automobile plastic rear bumper beams in life are mass-produced through mold injection molding. However, in the actual production process, reasons such as excessive filling of the injection molding, excessive holding pressure, and too long holding time will cause adhesion and solidification between the bumper beam and the molding mold in the lower mold.

[0003] When the existing anti-collision beam injection molding mold encounters the situation of adhesion between the anti-collision beam and the molding mold in the lower mold, the staff is required to use tools such as clamps to manually pull down the plastic anti-collision beam. This operation is not only laborious and time-consuming, affecting production efficiency, but also easily causes damage to the mold wall. Utility Model Content

[0004] The utility model aims to provide an injection mold for a rear anti-collision beam bracket of an automobile accessory in order to realize the purpose of portable blanking of a plastic anti-collision beam.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: an injection mold for a rear anti-collision beam bracket of an automobile accessory, comprising a lower mold, an upper mold, and a male mold, wherein an auxiliary demoulding component is provided on the lower mold;

[0006] The auxiliary demoulding component includes a first slide groove opened at the center of the upper end of the lower mold, a concave mold is slidably connected in the inner cavity of the first slide groove, an internal cavity is opened in the lower mold below the first slide groove, a first harness hole is opened in the middle of the side wall of the lower mold and penetrates into the inner cavity of the internal cavity, a U-shaped groove is opened at the upper end of the side wall of the lower mold and penetrates into the inner cavity of the first slide groove, a hydraulic push cylinder is fixedly connected to the center of the inner wall of the bottom end of the internal cavity, the output end of the hydraulic push cylinder is fixedly connected to the bottom end of the concave mold, and support platforms fixedly connected to the bottom end of the internal cavity are symmetrically arranged on both sides of the hydraulic push cylinder;

[0007] A first heating chamber is provided inside the upper end of the lower mold near the first slide groove, first heating coils are evenly distributed on the bottom wall of the first heating chamber, and a second harness hole is provided in the middle of the bottom wall of the first heating chamber;

[0008] Injection holes are provided on both side plates at the upper end of the concave mold, a second heating chamber is provided at the upper end inside the concave mold, a second slide groove is provided at the lower end inside the concave mold, second heating coils are evenly distributed in the inner cavity of the second heating chamber, electric cylinders are fixedly connected to both sides of the bottom end of the concave mold, the output end of the electric cylinder passes through the inner cavity of the second slide groove, a top plate is fixedly connected to the output end of the electric cylinder, and ejector pins are evenly fixedly connected to the upper end of the top plate.

[0009] As a further solution of the utility model: the punch is integrally formed at the lower end of the upper die, and after the lower die and the upper die are joined, an injection molding gap in the shape of a rear anti-collision beam is formed between the punch, the first slide groove and the upper die.

[0010] As a further solution of the utility model: the discharge nozzle of the injection molding tube is detachably connected to the inner cavity of the injection molding hole, and the injection molding tube is placed in the inner cavity of the U-shaped groove.

[0011] As a further solution of the present invention: the die completely moved into the inner cavity of the first slide groove fits with the top of the support platform.

[0012] As a further solution of the utility model: the shape of the top plate is consistent with the shape of the lower end wall plate of the second heating chamber.

[0013] As a further solution of the utility model: a through hole for the ejector to move up and down is provided on the upper groove surface of the concave mold and the lower wall plate of the second heating chamber;

[0014] When the ejector moves to the lowest level, the top end of the ejector pin is flush with the upper groove surface of the die.

[0015] As a further solution of the utility model: a third wiring harness hole is opened in the middle of the bottom end of the die, and the third wiring harness hole penetrates upward to the inner cavity of the second heating chamber.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By setting up an auxiliary demoulding component, the auxiliary demoulding component can remove the plastic anti-collision beam that has been adhered and solidified in the lower mold after simply heating the heating coil for a while, thereby solving the problem that when the existing anti-collision beam injection molding mold encounters the situation where adhesion occurs between the anti-collision beam and the molding mold in the lower mold, the staff needs to use tools such as clamps to manually pull down the plastic anti-collision beam, which is not only laborious and time-consuming and affects production efficiency, but also easily causes damage to the mold wall, thereby greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 It is a cross-sectional view of the lower mold of the utility model;

[0021] Figure 4 is a cross-sectional view of the first heating chamber of the utility model;

[0022] Figure 5 For this utility model Figure 4 The enlarged view of point B in the middle;

[0023] Figure 6 It is a cross-sectional view of the concave mold of the utility model;

[0024] Figure 7 For this utility model Figure 6 Enlarged view of point C in the middle;

[0025] Figure 8 For this utility model Figure 6 Enlarged view of point D in the middle.

[0026] In the figure: 1. lower mold; 2. upper mold; 3. first slide groove; 4. concave mold; 5. punch; 6. first harness hole; 7. U-shaped groove; 8. injection hole; 9. internal chamber; 10. support table; 11. hydraulic push cylinder; 12. electric cylinder; 13. first heating chamber; 14. first heating coil; 15. second harness hole; 16. second heating coil; 17. second heating chamber; 18. second slide groove; 19. ejector plate; 20. ejector pin; 21. third harness hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 8 In the embodiment of the utility model, an injection mold for a rear anti-collision beam bracket of an automobile accessory comprises a lower mold 1, an upper mold 2, and a punch 5, and an auxiliary demoulding component is provided on the lower mold 1;

[0029] The auxiliary demoulding component includes a first slide groove 3 opened at the center of the upper end of the lower mold 1, a die 4 is slidably connected in the inner cavity of the first slide groove 3, an internal cavity 9 is opened in the lower mold 1 below the first slide groove 3, a first harness hole 6 penetrating to the inner cavity of the internal cavity 9 is opened in the middle of the side wall of the lower mold 1, a U-shaped groove 7 penetrating to the inner cavity of the first slide groove 3 is opened at the upper end of the side wall of the lower mold 1, a hydraulic push cylinder 11 is fixedly connected to the center of the inner wall of the bottom end of the internal cavity 9, the output end of the hydraulic push cylinder 11 is fixedly connected to the bottom end of the die 4, and support platforms 10 fixedly connected to the bottom end of the internal cavity 9 are symmetrically arranged on both sides of the hydraulic push cylinder 11;

[0030] A first heating chamber 13 is provided inside the upper end of the lower mold 1 near the first chute 3, first heating coils 14 are evenly distributed on the bottom wall of the first heating chamber 13, and a second harness hole 15 is provided in the middle of the bottom wall of the first heating chamber 13;

[0031] Injection holes 8 are provided on both side plates at the upper end of the die 4, a second heating chamber 17 is provided at the upper end inside the die 4, a second slide groove 18 is provided at the lower part inside the die 4, second heating coils 16 are evenly distributed in the inner cavity of the second heating chamber 17, electric cylinders 12 are fixedly connected to both sides of the bottom end of the die 4, the output end of the electric cylinder 12 passes through the inner cavity of the second slide groove 18, the output end of the electric cylinder 12 is fixedly connected to a top plate 19, and an ejector pin 20 is evenly fixedly connected to the upper end of the top plate 19.

[0032] In this embodiment: during the injection molding process of producing the anti-collision beam, if the injection molding process is too full, the holding pressure is too high or the holding time is too long, it is easy for the plastic anti-collision beam to adhere to the inner wall surface of the mold in the lower mold 1. At this time, the auxiliary demoulding component can be used to achieve convenient demoulding;

[0033] The staff first starts the first heating coil 14 and the second heating coil 16 in the first heating chamber 13 and the second heating chamber 17. The heat released by the heating coils softens the portion where the plastic anti-collision beam adheres to the die 4 and the first chute 3.

[0034] Afterwards, the hydraulic telescopic rod of the hydraulic push cylinder 11 is extended, thereby driving the die 4 to move upward along the first slide groove 3. During this process, the anti-collision beam is separated from the side wall surface of the first slide groove 3.

[0035] Afterwards, the electric cylinder 12 is started, and the telescopic rod of the electric cylinder 12 drives the top plate 19 to move upward along the second slide groove 18. During this process, the ejector pin 20 moves upward through the through hole, thereby pushing the plastic anti-collision beam to separate from the groove surface of the concave mold 4, thereby realizing the complete demolding of the plastic anti-collision beam conveniently and quickly.

[0036] Please refer to Figure 1The punch 5 is integrally formed at the lower end of the upper mold 2. After the lower mold 1 and the upper mold 2 are joined, an injection gap in the shape of a rear anti-collision beam is formed between the punch 5, the first slide groove 3 and the upper mold 2.

[0037] In this embodiment, after the molds are closed, plastic is injected into the gap formed between the punch 5, the first slide groove 3 and the upper mold 2 to obtain a molded plastic anti-collision beam.

[0038] Please refer to Figures 2-3 The discharge nozzle of the injection molding tube is detachably connected to the inner cavity of the injection molding hole 8 , and the injection molding tube is placed in the inner cavity of the U-shaped groove 7 .

[0039] In this embodiment: the injection tube injects plastic into the gap between the upper and lower molds through the injection holes 8 on both sides;

[0040] During the upward movement of the female mold 4, the injection tubes on both sides can leave the U-shaped groove 7 with an upper opening to achieve synchronous upward movement.

[0041] Please refer to Figures 3 to 8 The die 4 completely moved into the inner cavity of the first slide groove 3 is fitted with the top of the support platform 10.

[0042] In this embodiment, the support platform 10 is used to support and stabilize the female mold 4 when the upper and lower molds are closed for injection molding.

[0043] Please refer to Figures 6-7 The shape of the top plate 19 is consistent with the shape of the lower end wall plate of the second heating chamber 17.

[0044] In this embodiment, the top plate 19 that moves up to the maximum horizontal height fits with the lower end wall plate of the second heating chamber 17, so that no components are damaged by collision.

[0045] Please refer to Figures 3 to 8 The upper groove surface of the die 4 and the lower wall plate of the second heating chamber 17 are provided with through holes for the ejector pin 20 to move up and down;

[0046] When moved to the lowest level, the top end of the ejector pin 20 is flush with the upper groove surface of the die 4.

[0047] In this embodiment, during injection molding, the top end of the ejector pin 20 is flush with the upper groove surface of the die 4 so that the surface of the anti-collision beam product is smooth and clean.

[0048] Please refer to Figures 6 to 8 A third wiring harness hole 21 is opened in the middle of the bottom end of the die 4 , and the third wiring harness hole 21 penetrates upward to the inner cavity of the second heating chamber 17 .

[0049] In this embodiment, the wire harness passes through the third wire harness hole 21 to supply power to the heating coil in the second heating chamber 17 .

[0050] What is described above 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. An injection mold for a rear anti-collision beam bracket of an automobile accessory, comprising a lower mold (1), an upper mold (2), and a male mold (5), characterized in that: The lower mold (1) is provided with an auxiliary demoulding component; The auxiliary demoulding component comprises a first slide groove (3) provided at the center of the upper end of the lower mold (1), a die (4) being slidably connected in the inner cavity of the first slide groove (3), an internal cavity (9) being provided in the interior of the lower mold (1) below the first slide groove (3), a first harness hole (6) penetrating into the inner cavity of the internal cavity (9) being provided in the middle of the side wall of the lower mold (1), a U-shaped groove (7) penetrating into the inner cavity of the first slide groove (3) being provided at the upper end of the side wall of the lower mold (1), a hydraulic push cylinder (11) being fixedly connected in the center of the inner wall at the bottom end of the internal cavity (9), an output end of the hydraulic push cylinder (11) being fixedly connected to the bottom end of the die (4), and support platforms (10) fixedly connected to the bottom end of the internal cavity (9) being symmetrically provided on both sides of the hydraulic push cylinder (11); A first heating chamber (13) is provided inside the upper end of the lower mold (1) near the first slide groove (3), first heating coils (14) are evenly distributed on the bottom wall of the first heating chamber (13), and a second harness hole (15) is provided in the middle of the bottom wall of the first heating chamber (13); Injection holes (8) are provided on both side plates at the upper end of the die (4); a second heating chamber (17) is provided on the upper end of the interior of the die (4); a second slide groove (18) is provided on the lower end of the interior of the die (4); second heating coils (16) are evenly distributed in the inner cavity of the second heating chamber (17); electric cylinders (12) are fixedly connected to both sides of the bottom end of the die (4); the output end of the electric cylinder (12) passes through the inner cavity of the second slide groove (18); the output end of the electric cylinder (12) is fixedly connected to a top plate (19); and ejector pins (20) are evenly fixedly connected to the upper end of the top plate (19).

2. The injection mold for the rear anti-collision beam bracket of an automobile accessory according to claim 1, characterized in that: The male mold (5) is integrally formed at the lower end of the upper mold (2); after the lower mold (1) and the upper mold (2) are joined, an injection molding gap in the shape of a rear anti-collision beam is formed between the male mold (5), the first slide groove (3) and the upper mold (2).

3. The injection mold for the rear anti-collision beam bracket of an automobile accessory according to claim 1, characterized in that: The discharge nozzle of the injection molding tube is detachably connected to the inner cavity of the injection molding hole (8), and the injection molding tube is placed in the inner cavity of the U-shaped groove (7).

4. The injection mold for the rear anti-collision beam bracket of an automobile accessory according to claim 1, characterized in that: The female mold (4) completely moved into the inner cavity of the first slide groove (3) fits against the top of the support platform (10).

5. The injection mold for the rear anti-collision beam bracket of an automobile accessory according to claim 1, characterized in that: The shape of the top plate (19) matches the shape of the lower end wall plate of the second heating chamber (17).

6. The injection mold for the rear anti-collision beam bracket of an automobile accessory according to claim 1, characterized in that: The upper groove surface of the die (4) and the lower wall plate of the second heating chamber (17) are provided with through holes for the ejector pin (20) to move up and down; When moved to the lowest horizontal height, the top end of the ejector pin (20) is flush with the upper groove surface of the die (4).

7. The injection mold for the rear anti-collision beam bracket of an automobile accessory according to claim 1, characterized in that: A third wire harness hole (21) is provided in the middle of the bottom end of the concave mold (4), and the third wire harness hole (21) penetrates upward to the inner cavity of the second heating chamber (17).

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