Injection mold facilitating demolding of automobile bumper

Abstract

The utility model discloses an injection mold convenient to automobile bumper stripping, including upper die, the lower portion of upper die is provided with a mould, the left and right sides of a mould are all fixedly connected with the bottom plate, the top of two bottom plates all is connected with no. Two moulds and no. Three moulds are all set up mould groove in the top of a mould, two no. Two moulds left and right sides all are set up and limit the groove, the inner wall of four limit the groove all is connected with the limiting plate of sliding, the shape of four limiting plates all is T -shaped setting. The utility model, through separating to automobile bumper and mould cavity for many times, gradually carries out stripping, replaces the stripping mode of traditional direct adoption of ejector rod and ejects automobile bumper, effectively reduces the damage of the automobile bumper of forming, is convenient for the stripping of the automobile bumper with certain length, improves the stripping quality of device.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and more specifically, to an injection mold that facilitates the demolding of automobile bumpers. Background Technology

[0002] An injection mold for car bumpers is a high-precision industrial equipment used for the mass production of car bumpers. It uses injection molding to complete the processing and production of car bumpers. After the injection mold completes the molding of the car bumper, the upper mold and the lower mold need to be separated for demolding. The car bumper is prone to sticking to the inner wall of the lower mold.

[0003] Traditionally, ejector pins are used to push the car bumper out of the lower mold to demold the molded bumper. However, since the car bumper has a certain length, directly using ejector pins can easily damage the bumper. In addition, waiting for the bumper to cool down takes a lot of time, which affects the demolding speed. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an injection mold that facilitates the demolding of automobile bumpers, so as to solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution;

[0006] An injection mold for easy demolding of a car bumper includes an upper mold, a first mold located below the upper mold, base plates fixedly connected to both sides of the first mold, a second mold and a third mold slidably connected to the top of the two base plates, mold grooves formed on the top of the first, second and third molds, limit grooves formed on both sides of the two second molds, limit plates slidably connected to the inner walls of the four limit grooves, the four limit plates being T-shaped, one side of each of the four limit plates being fixedly connected to two third molds and one first mold, electric push rods fixedly connected to the opposite sides of the two base plates, sliding plates fixedly connected to the telescopic ends of the two electric push rods, and opposite sides of the two sliding plates being fixedly connected to the two third molds.

[0007] As a further description of the above technical solution:

[0008] Both of the No. 3 molds are fixedly connected to the top of a limiting rod, and the bottom of the upper mold has two limiting holes that are slidably connected to the limiting rod.

[0009] As a further description of the above technical solution:

[0010] The bottom of the No. 1 mold is fitted with a second electric push rod that is fixedly connected to it. The telescopic end of the second electric push rod is fixedly connected to a top plate. The top of the top plate penetrates through and extends to the inner bottom wall of the mold groove of the No. 1 mold.

[0011] As a further description of the above technical solution:

[0012] Each of the No. 1 mold, the two No. 2 molds, and the two No. 3 molds has two heat dissipation cavities. The inner walls of two adjacent heat dissipation cavities are provided with air inlets, and the inner walls of two adjacent heat dissipation cavities are interconnected through the two air inlets. The inner walls of the two heat dissipation cavities on the No. 1 mold are connected with air outlet pipes. The opposite sides of the two No. 3 molds are provided with grooves. The inner walls of the two grooves are fixedly connected with fans. The inner walls of the two grooves are connected with two conduits. One end of each of the four conduits is connected to one of the four heat dissipation cavities on the two No. 3 molds.

[0013] As a further description of the above technical solution:

[0014] The inner walls of the four air inlets on the second mold are all fixedly connected with air supply pipes. The outer sides of the four air supply pipes are slidably connected to the inner walls of the four air inlets on the first and third molds, respectively. The two adjacent heat dissipation cavities are connected by air supply pipes.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the groove is threaded with a mounting ring, and the inner wall of the mounting ring is fixedly connected with a filter plate.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] This solution achieves demolding by separating the car bumper from the mold cavity multiple times in a gradual manner, replacing the traditional method of directly ejecting the car bumper with ejector pins. This effectively reduces damage to the molded car bumper, facilitates demolding of car bumpers of a certain length, and improves the demolding quality of the device. Furthermore, it accelerates the cooling speed of the raw material after injection molding, thus improving demolding efficiency. Attached Figure Description

[0019] Figure 1 One of the perspective views of this utility model;

[0020] Figure 2 This is a second perspective view of the present utility model;

[0021] Figure 3 This is a cross-sectional view of the present invention;

[0022] Figure 4 This is a top sectional view of the present invention;

[0023] Figure 5 This utility model Figure 4 Enlarged view of part A in the middle.

[0024] Explanation of the labels in the diagram:

[0025] 1. Upper mold; 2. Mold No. 1; 3. Base plate; 4. Mold No. 2; 5. Mold No. 3; 6. Mold groove; 7. Limiting groove; 8. Limiting plate; 9. Electric push rod one; 10. Slide plate; 11. Limiting rod; 12. Limiting hole; 13. Electric push rod two; 14. Top plate; 15. Heat dissipation cavity; 16. Air inlet; 17. Air outlet pipe; 18. Groove; 19. Fan; 20. Conduit; 21. Air supply pipe; 22. Mounting ring; 23. Filter plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0027] Example 1:

[0028] Please see Figures 1-5 In this utility model: an injection mold for easy demolding of car bumpers includes an upper mold 1, a first mold 2 is provided below the upper mold 1, a base plate 3 is fixedly connected to both the left and right sides of the first mold 2, a second mold 4 and a third mold 5 are slidably connected to the top of the two base plates 3, a mold groove 6 is provided on the top of the first mold 2, the second mold 4 and the third mold 5, a limit groove 7 is provided on both the left and right sides of the two second molds 4, a limit plate 8 is slidably connected to the inner wall of the four limit grooves 7, the four limit plates 8 are T-shaped, one side of the four limit plates 8 is fixedly connected to the two third molds 5 and one first mold 2 respectively, an electric push rod 9 is inserted and fixedly connected to the opposite side of the two base plates 3, a sliding plate 10 is fixedly connected to the telescopic end of the two electric push rods 9, and the opposite side of the two sliding plates 10 is fixedly connected to the two third molds 5 respectively.

[0029] In this invention, mold 2, two molds 4, and two molds 5 can form a complete lower mold. When injection molding a car bumper, the upper mold 1 is first moved to the lower mold using a lifting device until the bottom of the upper mold 1 is in close contact with the tops of mold 2, two molds 4, and two molds 5, thus achieving mold closing. At this time, a complete mold cavity is formed between the bottom of the upper mold 1 and the mold grooves 6 at the top of mold 2, two molds 4, and two molds 5. The injection material can then be injected into the mold cavity from the injection tube at the top of the upper mold 1. After the material cools, the car bumper can be formed.

[0030] After the car bumper is formed, the lifting device is activated in reverse to detach the upper mold 1 from below. Then, the two electric push rods 9 are activated, which, through the sliding plate 10, move the two third molds 5 away from each other. During this process, the left and right sides of the formed car bumper will detach from the third mold 5, thus completing one demolding. As the third mold 5 moves, it will cause the two limiting plates 8 to slide against the inner wall of the limiting groove 7 until one side of the limiting plate 8 contacts the inner wall of the limiting groove 7. At this point, as the third mold 5 moves, the limiting plate 8 will cause the second mold 4 to move away from the first mold 2. As mold 4 moves, the formed car bumper will detach from mold 4, thus achieving a secondary demolding effect. After two demoldings, the contact area between the formed car bumper and the mold cavity will be significantly reduced. Then, the formed car bumper can be removed manually or by a robotic arm, completing the demolding of the car bumper. The process involves separating the car bumper from the mold cavity multiple times, gradually demolding, which replaces the traditional demolding method of directly ejecting the car bumper with an ejector rod. This effectively reduces damage to the formed car bumper and improves the demolding quality of the device.

[0031] Please see Figures 1-3 Among them, the tops of the two No. 3 molds 5 are fixedly connected with limit rods 11, and the bottom of the upper mold 1 has two limit holes 12 that are slidably connected to the limit rods 11.

[0032] In this invention, the cooperation between the limiting rod 11 and the limiting hole 12 can effectively position the upper mold 1 and the lower mold, improve the accuracy of the device in closing the mold, and thus improve the practicality of the device.

[0033] Please see Figure 3 Among them: the bottom of mold 2 is inserted with an electric push rod 2 13 fixedly connected to it, the telescopic end of the electric push rod 2 13 is fixedly connected to a top plate 14, and the top of the top plate 14 penetrates and extends to the inner bottom wall of the mold groove 6 of mold 2.

[0034] In this invention, after the second demolding is completed, the electric push rod 13 is activated. The electric push rod 13 will drive the top plate 14 to rise. After the top plate 14 rises, it will drive the formed car bumper to detach from the first mold 2, and demold the car bumper again. This avoids the situation where the car bumper sticks to the first mold 2, making it easier for workers to demold and remove it.

[0035] Example 2:

[0036] Please see Figure 4 and 5The first mold 2, the two second molds 4, and the two third molds 5 each have two heat dissipation cavities 15. The inner walls of two adjacent heat dissipation cavities 15 are provided with air inlets 16. The inner walls of two adjacent heat dissipation cavities 15 are connected to each other through the two air inlets 16. The inner walls of the two heat dissipation cavities 15 on the first mold 2 are connected with air outlet pipes 17. The opposite sides of the two third molds 5 each have a groove 18. The inner walls of the two grooves 18 are fixedly connected with fans 19. The inner walls of the two grooves 18 are connected with two conduits 20. One end of the four conduits 20 is connected to the four heat dissipation cavities 15 on the two third molds 5 respectively.

[0037] In this invention, after injection molding is completed, two fans 19 are turned on. The fans 19 draw air through the duct 20 into the heat dissipation cavities 15 on the two No. 3 molds 5. The air then passes through the air inlet 16 and passes through multiple heat dissipation cavities 15 in sequence. Finally, the air gathers in the heat dissipation cavity 15 in the No. 1 mold 2 and is discharged from the air outlet 17. During the flow of air inside the heat dissipation cavity 15, it dissipates heat from the No. 1 mold 2, the two No. 2 molds 4 and the two No. 3 molds 5 respectively, thereby improving the efficiency of raw material cooling and improving the processing efficiency of car bumpers.

[0038] Please see Figure 5 Among them, the inner walls of the four air inlets 16 on the second mold 4 are all fixedly connected with air supply pipes 21. The outer sides of the four air supply pipes 21 are slidably connected to the inner walls of the four air inlets 16 on the first mold 2 and the third mold 5 respectively. The two adjacent heat dissipation cavities 15 are connected by air supply pipes 21.

[0039] In this utility model, the air supply pipe 21 can connect two adjacent heat dissipation cavities 15. At the same time, the cooperation between the air supply pipe 21 and the air inlet 16 can limit the movement between adjacent No. 1 mold 2, two No. 2 molds 4 and two No. 3 molds 5, thereby improving the integrity of the lower mold closure and enhancing the practicality of the device.

[0040] Please see Figure 5 The inner wall of the groove 18 is threaded with a mounting ring 22, and the inner wall of the mounting ring 22 is fixedly connected with a filter plate 23.

[0041] In this invention, the mounting ring 22 allows for the installation of the filter plate 23, which in turn filters dust from the air, preventing dust from contaminating the inside of the device and thus improving its practicality.

[0042] The above are merely preferred embodiments of this utility model; however, the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and its improved concept, should be included within the scope of protection of this utility model.

Claims

1. An injection mold for easy demolding of an automobile bumper, comprising an upper mold (1), characterized in that: Below the upper mold (1) is a first mold (2). A base plate (3) is fixedly connected to both the left and right sides of the first mold (2). A second mold (4) and a third mold (5) are slidably connected to the tops of the two base plates (3). Mold grooves (6) are opened on the tops of the first mold (2), the second mold (4), and the third mold (5). Limiting grooves (7) are opened on both the left and right sides of the two second molds (4). The inner walls of the four limiting grooves (7) are slidably connected to limiting... Position plate (8), the four limiting plates (8) are all T-shaped. One side of the four limiting plates (8) is fixedly connected to two No. 3 molds (5) and one No. 1 mold (2). The opposite sides of the two base plates (3) are each inserted with an electric push rod (9) fixedly connected to it. The telescopic ends of the two electric push rods (9) are fixedly connected to a slide plate (10). The opposite sides of the two slide plates (10) are respectively fixedly connected to the two No. 3 molds (5).

2. The injection mold for facilitating demolding of an automobile bumper according to claim 1, characterized in that: The top of both of the three molds (5) is fixedly connected with a limiting rod (11), and the bottom of the upper mold (1) has two limiting holes (12) that are slidably connected to the limiting rod (11).

3. The injection mold for facilitating demolding of an automobile bumper according to claim 1, characterized in that: The bottom of the first mold (2) is inserted with an electric push rod two (13) fixedly connected to it. The telescopic end of the electric push rod two (13) is fixedly connected to a top plate (14). The top of the top plate (14) penetrates and extends to the inner bottom wall of the mold groove (6) of the first mold (2).

4. The injection mold for facilitating demolding of an automobile bumper according to claim 1, characterized in that: Each of the first mold (2), the two second molds (4), and the two third molds (5) has two heat dissipation cavities (15). The inner walls of two adjacent heat dissipation cavities (15) are provided with air inlets (16), and the inner walls of two adjacent heat dissipation cavities (15) are connected to each other through the two air inlets (16). The inner walls of the two heat dissipation cavities (15) on the first mold (2) are connected with air outlet pipes (17). The opposite sides of the two third molds (5) are provided with grooves (18), and the inner walls of the two grooves (18) are fixedly connected with fans (19). The inner walls of the two grooves (18) are connected with two conduits (20), and one end of each of the four conduits (20) is connected to the four heat dissipation cavities (15) on the two third molds (5).

5. The injection mold for facilitating demolding of an automobile bumper according to claim 4, characterized in that: The inner walls of the four air inlets (16) on the second mold (4) are all fixedly connected with air supply pipes (21). The outer sides of the four air supply pipes (21) are slidably connected to the inner walls of the four air inlets (16) on the first mold (2) and the third mold (5). The two adjacent heat dissipation cavities (15) are connected by air supply pipes (21).

6. The injection mold for facilitating demolding of an automobile bumper according to claim 4, characterized in that: The inner wall of the groove (18) is threaded with a mounting ring (22), and the inner wall of the mounting ring (22) is fixedly connected with a filter plate (23).

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