Injection mold of automobile bumper

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold of an automobile bumper, which comprises a base, a lower mold mounted at the top of the base, a top plate mounted at the top of the base through a plurality of guide rods, a transverse plate arranged below the top plate, and a telescopic mechanism connected with the top of the transverse plate. The bottom of the transverse plate is provided with an upper mold through a support, the upper mold is located above the lower mold, the top of the lower mold is provided with a cavity matched with the upper mold, one side of the top of the lower mold is provided with an injection molding head, the injection molding head communicates with the cavity, and the two sides of the top of the base are each provided with two rails in parallel. The spraying head can be driven to horizontally move through the linear driving module, the spraying head can be moved into the cavity under the action of the rolling wheel and the guide rail, meanwhile, a release agent can be conveyed to the spraying head through the conveying pump, the release agent is sprayed into the cavity from the spraying head, spraying of the release agent is completed, and spraying is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for an automobile bumper. Background Art

[0002] Bumpers are installed at the front and rear ends of the car. They not only have decorative functions, but more importantly, they are safety devices that absorb and mitigate external impacts, protect the car body and protect the safety of the passengers.

[0003] When processing automobile bumpers, it is generally processed by injection molding. The molten raw materials are injected into the molding mold for shaping. After cooling, the preliminary processing of the automobile bumper is completed. However, during the molding process, in order to facilitate the removal of the bumper from the mold, it is necessary to spray a mold release agent in the mold cavity. The existing molds are generally sprayed manually by the staff, which is troublesome to spray. After the molding process, an ejection mechanism is generally required to remove the mold from the upper mold. The general ejection mechanism is a push rod structure. The bumper is pushed down by controlling the movement of the push rod. However, since the bumper itself has a certain elasticity, a large force is required for demolding, and excessive force applied by the push rod will cause the bumper to deform and damage, resulting in poor use effect. To this end, we propose an injection mold for automobile bumpers. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes an injection mold for an automobile bumper.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an injection mold for an automobile bumper is designed, including a base, a lower mold is installed on the top of the base, a top plate is also installed on the top of the base through a plurality of guide rods, a cross plate is provided below the top plate, the top of the cross plate is connected to the top plate through a telescopic mechanism, an upper mold is installed on the bottom of the cross plate through a bracket, the upper mold is located above the lower mold, and a cavity matching the upper mold is opened on the top of the lower mold, an injection head is installed on one side of the top of the lower mold, and the injection head is connected to the cavity;

[0006] Two rails are installed in parallel on both sides of the top of the base, and each rail is connected to a linear drive module. The two linear drive modules are connected through a U-shaped frame. A strip moving plate is provided inside the U-shaped frame. At least one guide rod is vertically installed on the top of the strip moving plate. The top of the guide rod slides through the U-shaped frame, and a spring is sleeved on the side of the guide rod. The top of the spring is fixed to the bottom of the U-shaped frame, and the bottom of the spring is fixed to the top of the strip moving plate.

[0007] A fixing frame is installed at the bottom of the strip moving plate, a shunt pipe is installed on the outer surface of the fixing frame, a plurality of nozzles are installed on the side of the shunt pipe, a delivery pump is installed on one side of the top of the base, and the liquid inlet of the delivery pump is connected to one end of the shunt pipe through a liquid delivery pipe;

[0008] An air pump is installed on the top of the top plate, and an air pipe is connected to the air outlet of the air pump. The end of the air pipe passes through the top plate and the cross plate, and the end of the air pipe is connected to an annular tube, which is fixed on the top of the upper mold. A number of exhaust holes are equidistantly opened on the bottom edge of the upper mold, and the annular tube is connected to the exhaust holes through a pipeline.

[0009] Preferably, fixed plates are vertically installed at both ends of the bottom of the strip movable plate, the adjacent surfaces of the two fixed plates are rotatably connected with rollers, guide rails are installed on both sides of the top of the base through support rods, and the side of each roller is in contact with the top of the guide rail.

[0010] Preferably, there is a distance between the upper mold and the transverse plate, and the annular tube is located within the distance.

[0011] Preferably, a plurality of connecting blocks are installed on the edge of the transverse plate, and each connecting block is slidably sleeved on a corresponding guide column.

[0012] Preferably, the size of the fixing frame and the diverter pipe is smaller than the size of the cavity, and there is a distance between the nozzle and the inner wall of the cavity.

[0013] Preferably, the middle part of the guide rail is lower than the two ends, when the roller moves to the end of the guide rail, there is a gap between the bottom of the nozzle and the top of the lower mold, and when the roller moves to the middle of the guide rail, the nozzle is located in the cavity.

[0014] Preferably, a plurality of legs are installed on the bottom edge of the base, and a control cabinet is also installed on the bottom of the base. The controller inside the control cabinet is connected to the telescopic mechanism and the air pump through wires, and the controller is also connected to the linear drive module and the delivery pump through wires.

[0015] The design scheme proposed by the utility model has the following beneficial effects during application:

[0016] 1. The linear drive module can drive the nozzle to move horizontally, and the nozzle can be moved into the cavity under the action of the roller and the guide rail. At the same time, the release agent can be delivered to the nozzle through the delivery pump and sprayed from the nozzle into the cavity to complete the spraying of the release agent, which is convenient for spraying.

[0017] 2. The air pump can be used to transport external air to the exhaust hole through the air guide pipe and the annular pipe, and blown to the car bumper from the exhaust hole to separate the car bumper from the upper mold, which will not cause deformation or damage to the car bumper and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the U-shaped frame structure of the utility model;

[0020] Figure 3 This is the structural front view of the utility model;

[0021] Figure 4 It is a front sectional view of the upper mold structure of the utility model.

[0022] In the figure: 1. base; 2. control cabinet; 3. track; 4. guide column; 5. connection block; 6. top plate; 7. telescopic mechanism; 8. air pump; 9. spring; 10. guide rod; 11. strip movable plate; 12. roller; 13. nozzle; 14. shunt pipe; 15. fixed plate; 16. fixed frame; 17. U-shaped frame; 18. linear drive module; 19. support leg; 20. lower mold; 21. guide rail; 22. cavity; 23. upper mold; 24. cross plate; 25. delivery pump; 26. infusion tube; 27. air guide tube; 28. annular tube; 29. ​​exhaust hole; 30. bracket; 31. injection head. DETAILED DESCRIPTION

[0023] 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.

[0024] Reference Figure 1-Figure 4 , an injection mold for a car bumper, comprising a base 1, a plurality of legs 19 are installed at the bottom edge of the base 1, a control cabinet 2 is also installed at the bottom of the base 1, a controller is installed inside the control cabinet 2, and the controller is one of a control mainboard, a host or a PLC logic controller;

[0025] like Figure 1 and Figure 3 As shown, a lower mold 20 is installed on the top of the base 1, and a top plate 6 is also installed on the top of the base 1 through a plurality of guide rods 10. A cross plate 24 is provided below the top plate 6. The top of the cross plate 24 is connected to the top plate 6 through a telescopic mechanism 7. The telescopic mechanism 7 is one of an electric push rod, a hydraulic rod or a cylinder. The telescopic mechanism 7 is connected to the controller through a wire, and the telescopic mechanism 7 can be controlled to retract under the action of the controller, thereby adjusting the position of the cross plate 24 as needed.

[0026] It should be noted that if Figure 1 As shown, a plurality of connecting blocks 5 are installed at the edge of the transverse plate 24, and each connecting block 5 is slidably sleeved on the corresponding guide column 4. The connecting blocks 5 can limit the position of the transverse plate 24 so that the transverse plate 24 remains stable.

[0027] like Figure 1As shown, an upper mold 23 is installed at the bottom of the cross plate 24 through a bracket 30. The upper mold 23 is located above the lower mold 20, and a cavity 22 matching the upper mold 23 is opened at the top of the lower mold 20. An injection head 31 is installed on one side of the top of the lower mold 20. The injection head 31 is connected to the cavity 22. The injection head 31 is connected to an external injection molding machine through a pipeline. In actual use, the upper mold 23 can be moved into the cavity 22 and cooperate with the cavity 22 to form a shape space of a car bumper, and then molten raw materials are injected into the space through the injection head 31 to perform molding processing.

[0028] like Figure 1 As shown, two rails 3 are installed in parallel on both sides of the top of the base 1, and each rail 3 is connected to a linear drive module 18, which is connected to the controller through a wire, and the two linear drive modules 18 are connected through a U-shaped frame 17, and a strip moving plate 11 is provided inside the U-shaped frame 17, and at least one guide rod 10 is vertically installed on the top of the strip moving plate 11, and the top of the guide rod 10 slides through the U-shaped frame 17, and a fixed frame 16 is installed at the bottom of the strip moving plate 11, and a shunt pipe 14 is installed on the outer surface of the fixed frame 16, and a plurality of nozzles 13 are installed on the side of the shunt pipe 14, and the bottom A delivery pump 25 is installed on one side of the top of the seat 1, and the liquid inlet of the delivery pump 25 is connected to one end of the shunt tube 14 through an infusion tube 26, and the delivery pump 25 is connected to the controller through a wire, and the liquid inlet of the delivery pump 25 is connected to the release agent storage tank through a pipeline. In actual use, the linear drive module 18 can drive the U-shaped frame 17 to move along the track 3, and then drive the nozzle 13 to move, so that the nozzle 13 can be moved into the cavity 22. At the same time, the controller controls the delivery pump 25 to work, deliver the release agent to the nozzle 13, and spray it from the nozzle 13 to the inside of the cavity 22, so as to facilitate subsequent demolding processing.

[0029] It should be noted that the size of the fixing frame 16 and the diverter pipe 14 is smaller than the size of the cavity 22 , and there is a distance between the nozzle 13 and the inner wall of the cavity 22 , so that when spraying the release agent, the nozzle 13 will not collide with the cavity 22 .

[0030] like Figure 1 and Figure 3As shown, a spring 9 is sleeved on the side of the guide rod 10, the top of the spring 9 is fixed to the bottom of the U-shaped frame 17, the bottom of the spring 9 is fixed to the top of the strip movable plate 11, and fixed plates 15 are vertically installed at both ends of the bottom of the strip movable plate 11, and the adjacent surfaces of the two fixed plates 15 are rotatably connected with rollers 12, and guide rails 21 are installed on both sides of the top of the base 1 through support rods, and the side of each roller 12 is in contact with the top of the guide rail 21. In actual use, the roller 12 will move along the guide rail 21, and under the elastic force of the spring 9, the roller 12 will be tightly pressed against the guide rail 21, so that the strip movable plate 11 can move up and down along the guide rail 21, which will not cause a collision between the nozzle 13 and the lower mold 20.

[0031] It should be noted that if Figure 3 As shown, the middle part of the guide rail 21 is lower than the two ends. When the roller 12 moves to the end of the guide rail 21, there is a gap between the bottom of the nozzle 13 and the top of the lower mold 20. When the roller 12 moves to the middle of the guide rail 21, the nozzle 13 is located inside the cavity 22. In actual use, the nozzle 13 can adjust its position according to the position of the guide rail 21, so that the nozzle 13 can maintain a preset distance from the inner wall of the cavity 22 while moving horizontally, so that the release agent is sprayed evenly.

[0032] like Figure 3 and Figure 4 As shown, an air pump 8 is installed on the top of the top plate 6, and an air outlet end of the air pump 8 is connected to an air guide pipe 27. The end of the air guide pipe 27 passes through the top plate 6 and the cross plate 24, and the end of the air guide pipe 27 is connected to an annular tube 28, which is fixed on the top of the upper mold 23. A plurality of exhaust holes 29 are equidistantly provided on the bottom edge of the upper mold 23. The annular tube 28 is connected to the exhaust holes 29 through pipelines, and the air pump 8 is connected to the controller through wires. In actual use, after the shaping of the automobile bumper is completed, the staff can control the air pump 8 to work through the controller, and the air pump 8 can blow external air to the automobile bumper through the exhaust holes 29, and when the part of the automobile bumper close to the exhaust holes 29 is separated from the bottom of the upper mold 23, the air discharged from the exhaust holes 29 will fill the gap between the automobile bumper and the upper mold 23, thereby increasing the area of ​​the automobile bumper that is impacted, while protecting the bumper from excessive force and deformation, it will also accelerate the falling off of the automobile bumper.

[0033] It should be noted that if Figure 3 As shown, there is a distance between the upper mold 23 and the transverse plate 24 , and the annular tube 28 is located within the distance. The annular tube 28 is installed above the upper mold 23 and will not collide with the transverse plate 24 .

[0034] Specifically, when the utility model is in use, the staff controls the linear drive module 18 to work through the controller, and the linear drive module 18 drives the U-shaped frame 17 to move along the track 3. While moving, the roller 12 rotates along the guide rail 21. Under the action of the guide rail 21, the strip movable plate 11 can move up and down following the guide rail 21. When the nozzle 13 moves into the cavity 22, the controller controls the delivery pump 25 to work, and the delivery pump 25 delivers the release agent to the shunt pipe 14 through the infusion tube 26, and finally sprays it evenly to the inner wall of the cavity 22 through the nozzle 13, which makes it convenient to spray the release agent. When the spraying is completed, the delivery pump 25 is turned off, and the nozzle 13 is sprayed evenly to the inner wall of the cavity 22. The linear drive module 18 moves back to its original position, and then the upper mold 23 is moved into the cavity 22 through the telescopic mechanism 7. When the upper mold 23 moves to the preset position, the raw material is injected into the space formed by the upper mold 23 and the cavity 22 for molding. After the car bumper is molded and cooled, the staff controls the telescopic mechanism 7 to contract through the controller, and the upper mold 23 moves upward and separates from the cavity 22. At the same time, the controller controls the air pump 8 to work, and the air pump 8 transports the external air to the annular tube 28 through the air duct 27. Finally, the air is blown toward the car bumper through the exhaust hole 29, and the car bumper is separated from the upper mold 23 to complete the processing.

[0035] 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. An injection mold for an automobile bumper, comprising a base (1), characterized in that: A lower mold (20) is installed on the top of the base (1), and a top plate (6) is also installed on the top of the base (1) through a plurality of guide rods (10). A transverse plate (24) is provided below the top plate (6), and the top of the transverse plate (24) is connected to the top plate (6) through a telescopic mechanism (7). An upper mold (23) is installed on the bottom of the transverse plate (24) through a bracket (30). The upper mold (23) is located above the lower mold (20), and a cavity (22) matching the upper mold (23) is provided on the top of the lower mold (20). An injection head (31) is installed on one side of the top of the lower mold (20), and the injection head (31) is connected to the cavity (22). Two rails (3) are installed in parallel on both sides of the top of the base (1), and each rail (3) is connected to a linear drive module (18). The two linear drive modules (18) are connected via a U-shaped frame (17). A strip-shaped movable plate (11) is provided inside the U-shaped frame (17). At least one guide rod (10) is vertically installed on the top of the strip-shaped movable plate (11). The top of the guide rod (10) slides through the U-shaped frame (17), and a spring (9) is sleeved on the side of the guide rod (10). The top of the spring (9) is fixed to the bottom of the U-shaped frame (17), and the bottom of the spring (9) is fixed to the top of the strip-shaped movable plate (11). A fixing frame (16) is installed at the bottom of the strip-shaped movable plate (11), a shunt pipe (14) is installed on the outer surface of the fixing frame (16), a plurality of nozzles (13) are installed on the side of the shunt pipe (14), a delivery pump (25) is installed on one side of the top of the base (1), and a liquid inlet of the delivery pump (25) is connected to one end of the shunt pipe (14) through a liquid delivery pipe (26); An air delivery pump (8) is installed on the top of the top plate (6), and an air outlet end of the air delivery pump (8) is connected to an air guide pipe (27). The end of the air guide pipe (27) passes through the top plate (6) and the cross plate (24), and the end of the air guide pipe (27) is connected to an annular pipe (28), which is fixed on the top of the upper mold (23). A plurality of exhaust holes (29) are equidistantly provided on the bottom edge of the upper mold (23), and the annular pipe (28) is connected to the exhaust holes (29) through a pipeline.

2. The injection mold for an automobile bumper according to claim 1, characterized in that: Fixed plates (15) are vertically mounted at both ends of the bottom of the strip-shaped movable plate (11), and rollers (12) are rotatably connected to the adjacent surfaces of the two fixed plates (15). Guide rails (21) are mounted on both sides of the top of the base (1) through support rods, and the side surface of each roller (12) is in contact with the top of the guide rail (21).

3. The injection mold for an automobile bumper according to claim 1, characterized in that: There is a distance between the upper mold (23) and the transverse plate (24), and the annular tube (28) is located within the distance.

4. The injection mold for an automobile bumper according to claim 1, characterized in that: A plurality of connection blocks (5) are installed on the edge of the transverse plate (24), and each connection block (5) is slidably sleeved on a corresponding guide column (4).

5. The injection mold for an automobile bumper according to claim 1, characterized in that: The sizes of the fixing frame (16) and the diverter pipe (14) are smaller than the size of the cavity (22), and there is a distance between the nozzle (13) and the inner wall of the cavity (22).

6. The injection mold for an automobile bumper according to claim 1, characterized in that: The middle part of the guide rail (21) is lower than the two ends. When the roller (12) moves to the end of the guide rail (21), there is a gap between the bottom of the nozzle (13) and the top of the lower mold (20). When the roller (12) moves to the middle of the guide rail (21), the nozzle (13) is located in the mold cavity (22).

7. The injection mold for an automobile bumper according to claim 1, characterized in that: A plurality of legs (19) are installed at the bottom edge of the base (1), and a control cabinet (2) is also installed at the bottom of the base (1). A controller inside the control cabinet (2) is connected to the telescopic mechanism (7) and the air delivery pump (8) through wires, and the controller is also connected to the linear drive module (18) and the delivery pump (25) through wires.

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