Injection mold for a door panel handle

Abstract

The application discloses a door plate handle injection mold, which comprises a core plate, a handle injection mechanism, a positioning ejection mechanism and an ejection auxiliary mechanism; the top of the core plate is provided with a top mold plate, and the bottom of the core plate is provided with a positioning mold plate; the handle injection mechanism is installed on the core plate, and the handle injection mechanism forms a door plate handle by injection molding through a mold; the positioning ejection mechanism is installed on the positioning mold plate; when the application is used, the required raw materials are injected into the mold through an injection channel and flow into the cavity on the core plate, meanwhile, the residual raw materials outside the door plate handle enter the flow guide groove and the injection groove to form long strip-shaped edge materials; the arc-shaped ejection plate is lifted upward under the action of the spring by resetting the top mold plate, and the long strip-shaped edge materials drive the door plate handle to separate from the cavity as a whole, so that the door plate handle body after being directly contacted is quickly ejected.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically to an injection mold for a door panel handle. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products their complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and after cooling and solidification, obtaining the molded product. Injection molds are classified into two types according to their molding characteristics: thermosetting plastic molds and thermoplastic plastic molds.

[0003] However, existing injection mold technology for door handles still has certain problems. During the ejection process of the molded product, the existing injection molds for door handles often come into direct contact with the product body, leaving ejection marks on the product body and affecting product quality. In order to avoid marks on the body, manufacturers eject the product at the edges and corners. However, the edges and corners are prone to softening due to residual heat after the product is formed, thus reducing the ejection success rate. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold for door panel handles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an injection mold for a door panel handle, comprising a core plate, a handle injection mechanism, a positioning and ejection mechanism, and an ejection auxiliary mechanism; the top of the core plate is provided with a top template, and the bottom of the core plate is provided with a positioning template; the handle injection mechanism is installed on the core plate, and the handle injection mechanism forms the door panel handle through injection molding using the mold; the positioning and ejection mechanism is installed on the positioning template, and the positioning and ejection mechanism is used to eject the formed door panel handle and simultaneously cut the edge material; the ejection auxiliary mechanism is installed on the top of the core plate, and the ejection auxiliary mechanism is used to cool and reduce the temperature of the formed door panel handle during ejection.

[0006] Preferably, the handle injection molding mechanism includes a cavity formed on the core plate, and both the core plate and the positioning template are provided with injection channels. The inlet of the injection channel is located outside the core plate and the positioning template, and the outlet of the injection channel faces the cavity.

[0007] Preferably, the positioning and ejection mechanism includes two housings, which are symmetrically installed on the top of the positioning template. Each housing has an opening at its top and an arc-shaped ejection plate slidably mounted inside. The bottom of the core plate has two symmetrically arranged arc-shaped openings, the inner walls of which have positioning grooves. A slider is installed on the outside of the arc-shaped ejection plate, allowing it to slide within the positioning grooves via the slider. A guide groove is provided on the cavity, and an injection groove is provided on the arc-shaped ejection plate. Two side plates are symmetrically installed on the top of the core plate, and a top template is installed on the top of each side plate. Multiple light rods are symmetrically arranged inside the top template, and two movable plates are slidably mounted on each light rod. A fixed plate is fixedly connected to the bottom end of each light rod. A cutting blade is installed at the bottom of each movable plate, and a cutting groove is provided on the fixed plate. Multiple springs are fixedly connected inside the housing, with the top end of each spring fixedly connected to the bottom of the arc-shaped ejection plate.

[0008] Preferably, the ejection auxiliary mechanism includes air pumps respectively installed on both sides of the core plate, the air outlet of the air pump is connected to a three-way flexible hose, the core plate has an air outlet hole inside, the air outlet of the air outlet hole is located outside the cavity, a square protrusion is installed on the top of the core plate, the square protrusion is hollow inside and has an air inlet at the bottom, the square protrusion is connected to an air outlet pipe outside, one end of the air outlet pipe is set towards the injection molding groove and the guide groove, one end of the three-way flexible hose is connected to the air outlet hole, and the other end of the three-way flexible hose is connected to the air inlet of the square protrusion.

[0009] Preferably, the top of the top template is fixedly connected to the first movable column, and the top of the movable plate is fixedly connected to the second movable column, with one end of the top of the second movable column penetrating through the inner top of the top template.

[0010] Preferably, the bottom of the positioning template is fixedly connected to a mold base plate.

[0011] Preferably, the top of the positioning template is fixedly connected with multiple guide posts.

[0012] Preferably, the core plate, the positioning template, the mold base plate, and the top template are all fixedly connected to the outside with fixing ears.

[0013] Preferably, a junction box is installed on the outside of the mold base plate.

[0014] Preferably, the core plate has a heating channel inside.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When using this invention, the raw materials required for mold forming are injected through the injection channel and flow into the cavity on the core plate. At the same time, the raw materials remaining on the outside of the door handle will enter the guide groove and the injection groove to form long strips of edge material. By resetting the top template, the arc-shaped ejection plate is raised upward under the action of the spring, thereby achieving rapid ejection without directly contacting the molded door handle body. The operator can push the movable plate downward by starting the external drive device. The cutting blade at the bottom of the movable plate can cut off the long strips of edge material on the outside of the ejected door handle after passing through the cutting groove. This invention can remove the excess edge material of the finished product after ejection.

[0017] 2. During the ejection process, the operator can start the air pump. The air blown by the air pump enters the air outlet through one end of the three-way hose to blow towards the outside of the molded door handle body. The other end of the three-way hose enters through the bottom of the square protrusion and blows towards the guide groove and injection groove through the air outlet pipe, thereby quickly cooling the molded door handle body and cooling the long strip edge material at the same time, increasing the hardness of the edge material, reducing the softening of the plastic edge material caused by residual high temperature, and improving the success rate of ejection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the injection mold for the door handle of the present invention;

[0019] Figure 2 This is a side view of the injection mold for the door handle of the present invention.

[0020] Figure 3 This is a schematic diagram of the core plate in the injection mold of the door handle of the present invention;

[0021] Figure 4 This is a schematic cross-sectional view of the core plate and the housing in the injection mold of the door handle of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the movable plate and the fixed plate in the injection mold of the door handle of the present invention;

[0023] Figure 6 This is a schematic cross-sectional view of the fixing plate in the injection mold of the door handle of the present invention.

[0024] In the diagram: 1. Top template; 2. Core plate; 3. Positioning template; 4. Mold base plate; 5. Heating channel; 6. First movable column; 7. Second movable column; 8. Fixing ear; 9. Side plate; 10. Movable plate; 11. Injection channel; 12. Air pump; 13. Junction box; 14. Fixing plate; 15. Smooth rod; 16. Square protrusion; 17. Air outlet pipe; 18. Air outlet hole; 19. Cavity; 20. Arc-shaped ejector plate; 21. Spring; 22. Injection line groove; 23. T-shaped flexible hose; 24. Housing; 25. Guide column; 26. Positioning slide groove; 27. Flow guide groove; 28. Slider; 29. ​​Arc-shaped opening; 30. Cutting blade; 31. Cutting groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-6 The present invention provides an injection mold for a door handle, comprising: a core plate 2, a handle injection mechanism, a positioning ejection mechanism, and an ejection auxiliary mechanism.

[0027] The core plate 2 has a top template 1 at the top and a positioning template 3 at the bottom.

[0028] The handle injection molding mechanism is installed on the core plate 2. The handle injection molding mechanism includes a cavity 19 opened on the core plate 2. Both the core plate 2 and the positioning template 3 are provided with injection channels 11. The inlet of the injection channel 11 is located outside the core plate 2 and the positioning template 3, and the outlet of the injection channel 11 faces the cavity 19. In use, the raw material required for mold forming is injected through the injection channel 11 and flows into the cavity 19 on the core plate 2. The top template 1 is driven by an external drive device to drive the fixing plate 14 to press down so that the cavity 19 forms a sealed space, and the core plate 2 is moved down to fit the positioning template 3 at the same time. During this process, the raw material is formed in the cavity 19.

[0029] The positioning ejection mechanism is installed on the positioning template 3. The positioning ejection mechanism includes two housings 24, which are symmetrically installed on the top of the positioning template 3. The top of the housing 24 is provided with an opening, and an arc-shaped ejection plate 20 is slidably installed inside. The bottom of the core plate 2 is symmetrically provided with two arc-shaped openings 29. The inner wall of the arc-shaped opening 29 is provided with a positioning groove 26. A slider 28 is installed on the outside of the arc-shaped ejection plate 20. The arc-shaped ejection plate 20 slides in the positioning groove 26 through the slider 28. When in use, the housing 24 and the arc-shaped ejection plate 20 move into the arc-shaped opening 29. The downward pressing force of the fixing plate 14 keeps the arc-shaped ejection plate 20 always inside the housing 24. The guide groove 27 on the arc-shaped ejection plate 20 corresponds to and is parallel to the injection groove 22 on the cavity 19. The slider 28 can slide in the positioning groove 26 when the housing 24 moves, and the position of the arc-shaped ejection plate 20 will not shift.

[0030] The cavity 19 is provided with a guide groove 27, and the arc-shaped ejector plate 20 is provided with an injection groove 22. Two side plates 9 are symmetrically installed on the top of the core plate 2. A top template 1 is installed on the top of the side plates 9. Multiple light rods 15 are symmetrically arranged inside the top template 1. Two movable plates 10 are slidably installed on the light rods 15. A fixed plate 14 is fixedly connected to one bottom end of the light rod 15. A cutting blade 30 is installed at the bottom of the movable plate 10. A cutting groove 31 is provided on the fixed plate 14. Multiple springs 21 are fixedly connected inside the housing 24. One top end of each spring 21 is fixedly connected to the bottom of the arc-shaped ejector plate 20. (The last sentence appears to be incomplete and possibly refers to a different material.) After cooling, the door handle is formed. At the same time, the raw material remaining on the outside of the door handle will enter the guide groove 27 and the injection groove 22 to form a long strip of edge material. By resetting the top template 1, the fixing plate 14 pressed on the arc-shaped ejector plate 20 is removed from the arc-shaped ejector plate 20. The arc-shaped ejector plate 20 is lifted upward under the action of the spring 21, and pushes the long strip of edge material to drive the door handle to detach from the cavity 19. The operator starts the external drive device to push the movable plate 10 downward. The cutting blade 30 at the bottom of the movable plate 10 passes through the cutting groove 31 and can cut off the long strip of edge material on the outside of the ejected door handle.

[0031] The ejection auxiliary mechanism is installed on the top of the core plate 2. The ejection auxiliary mechanism includes air pumps 12 installed on both sides of the core plate 2. The air outlets of the air pumps 12 are connected to a three-way flexible hose 23. The core plate 2 has an air outlet 18 inside, with the outlet of the air outlet 18 located outside the cavity 19. A square protrusion 16 is installed on the top of the core plate 2. The square protrusion 16 is hollow inside and has an air inlet at the bottom. An air outlet pipe 17 is connected to the outside of the square protrusion 16. One end of the air outlet pipe 17 faces the injection molding groove 22 and the guide groove 27. The three-way flexible hose 23... One end of the 3 is connected to the inside of the air outlet 18, and the other end of the three-way flexible hose 23 is connected to the inside of the air inlet of the square protrusion 16. During the ejection process, the operator can start the air pump 12. The air blown by the air pump 12 enters the air outlet 18 through one end of the three-way flexible hose 23 to blow towards the outside of the molded door handle body. The other end of the three-way flexible hose 23 enters through the bottom of the square protrusion 16 and blows towards the guide groove 27 and the injection groove 22 through the air outlet pipe 17, thereby quickly cooling the molded door handle body and cooling the long strip edge material at the same time.

[0032] like Figures 1-6 As shown, the top of the top template 1 is fixedly connected to the first movable column 6, and the top of the movable plate 10 is fixedly connected to the second movable column 7. One end of the top of the second movable column 7 penetrates the inner top of the top template 1. The first movable column 6 at the top of the top template 1 can be connected to the external main drive equipment. The top template 1 is driven to press the core plate 2 downward through the first movable column 6. The bottom of the positioning template 3 is fixedly connected to the mold base plate 4, which can fix the main body on the plane. The top of the positioning template 3 is fixedly connected to multiple guide columns 25. 5 can penetrate the core plate 2 to achieve positioning and movement; the core plate 2, positioning template 3, mold base plate 4 and top template 1 are all fixedly connected to the outside of the fixing ears 8, and the fixing ears 8 can be connected to external traction equipment to achieve the lifting and lowering operation of the core plate 2, positioning template 3, mold base plate 4 and top template 1; the outside of the mold base plate 4 is equipped with a junction box 13, which can be used to install and connect the power circuit of the external drive equipment; the core plate 2 is provided with a heating channel 5 inside, and the temperature inside the core plate 2 can be controlled by the heating channel 5.

[0033] Based on the above technical solution, the working steps of this solution are summarized as follows: When using this invention, the raw materials required for mold forming are injected through the injection channel 11 and flow into the cavity 19 on the core plate 2. The top template 1 is driven by an external driving device to press down the fixing plate 14, forming a sealed space in the cavity 19. At the same time, the core plate 2 moves downward to fit the positioning template 3. During this process, the shell 24 and the arc-shaped ejector plate 20 move into the arc-shaped opening 29. The downward pressing force of the fixing plate 14 causes the arc-shaped ejector plate 20 to... Always located inside the housing 24, the guide groove 27 on the arc-shaped ejector plate 20 corresponds to and is parallel to the injection groove 22 on the cavity 19. The slider 28 can slide in the positioning groove 26 when the housing 24 moves, and the position of the arc-shaped ejector plate 20 will not shift. After the raw material cools, it forms a door handle. At the same time, the raw material remaining on the outside of the door handle will enter the guide groove 27 and the injection groove 22 to form a long strip of edge material. By resetting the top template 1, the fixing plate 14 pressed on the arc-shaped ejector plate 20 is removed from the arc-shaped top. The ejector plate 20, with its arc shape, is lifted upwards by the spring 21, pushing the long strip of edge material and causing the entire door handle to detach from the cavity 19. The operator then activates an external drive device to move the movable plate 10 downwards. The cutting blade 30 at the bottom of the movable plate 10 penetrates the cutting groove 31 and cuts off the long strip of edge material from the ejected door handle. This achieves rapid ejection without directly contacting the formed door handle body and allows for the removal of excess edge material. During the ejection process, the operator... The air pump 12 can be activated, and the air blown by the air pump 12 enters the air outlet 18 through one end of the three-way hose 23 to blow towards the outside of the molded door handle body. The other end of the three-way hose 23 enters through the bottom of the square protrusion 16 and blows into the guide groove 27 and injection groove 22 through the air outlet pipe 17, thereby quickly cooling the molded door handle body and cooling the long strip edge material at the same time, increasing the hardness of the edge material, reducing the phenomenon of plastic edge material softening due to residual high temperature, and improving the success rate of ejection.

[0034] All parts not described in this invention are the same as or can be implemented using existing technology. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection mold for a door handle, comprising a core plate (2), a handle injection mechanism, a positioning and ejection mechanism, and an ejection auxiliary mechanism, characterized in that: The core plate (2) is provided with a top template (1) at the top and a positioning template (3) at the bottom. The handle injection molding mechanism is installed on the core plate (2), and the handle injection molding mechanism forms the door panel handle by injection molding through a mold; The positioning ejection mechanism is installed on the positioning template (3). The positioning ejection mechanism is used to eject the door panel handle after it has been formed, and at the same time cut the edge material. The ejection auxiliary mechanism is installed on the top of the core plate (2), and the ejection auxiliary mechanism is used to cool down the door panel handle when it is ejected after molding. The handle injection molding mechanism includes a cavity (19) formed on the core plate (2). Both the core plate (2) and the positioning template (3) are provided with injection channels (11). The inlet of the injection channel (11) is located outside the core plate (2) and the positioning template (3), and the outlet of the injection channel (11) faces the cavity (19). The positioning and ejection mechanism includes two housings (24), which are symmetrically installed on the top of the positioning template (3). The top of each housing (24) has an opening, and an arc-shaped ejection plate (20) is slidably installed inside. The bottom of the core plate (2) has two symmetrical arc-shaped openings (29), and the inner wall of each arc-shaped opening (29) has a positioning groove (26). A slider (28) is installed on the outside of the arc-shaped ejection plate (20), and the arc-shaped ejection plate (20) slides in the positioning groove (26) through the slider (28). The cavity (19) has a guide groove (27), and the arc-shaped ejection plate (20) has an injection line. The core plate (2) has two side plates (9) symmetrically installed on its top. The top of the side plates (9) is equipped with a top template (1). The top template (1) is symmetrically provided with multiple light rods (15). Two movable plates (10) are slidably installed on the light rods (15). A fixed plate (14) is fixedly connected to one end of the bottom of the light rods (15). A cutting blade (30) is installed at the bottom of the movable plate (10). A cutting groove (31) is provided on the fixed plate (14). Multiple springs (21) are fixedly connected inside the housing (24). One end of the top of the springs (21) is fixedly connected to the bottom of the arc-shaped ejector plate (20).

2. The injection mold for a door panel handle according to claim 1, characterized in that: The ejection auxiliary mechanism includes air pumps (12) installed on both sides of the core plate (2). The air outlet of the air pump (12) is connected to a three-way hose (23). The core plate (2) is provided with an air outlet (18) inside. The air outlet of the air outlet (18) is located outside the cavity (19). A square protrusion (16) is installed on the top of the core plate (2). The square protrusion (16) is hollow inside and has an air inlet at the bottom. An air outlet pipe (17) is connected to the outside of the square protrusion (16). One end of the air outlet pipe (17) is set towards the injection molding groove (22) and the guide groove (27). One end of the three-way hose (23) is connected to the inside of the air outlet (18), and the other end of the three-way hose (23) is connected to the inside of the air inlet of the square protrusion (16).

3. The injection mold for a door panel handle according to claim 1, characterized in that: The top of the top template (1) is fixedly connected to the first movable column (6), and the top of the movable plate (10) is fixedly connected to the second movable column (7). One end of the top of the second movable column (7) penetrates the inner top of the top template (1).

4. The injection mold for a door panel handle according to claim 2, characterized in that: The bottom of the positioning template (3) is fixedly connected to the mold base plate (4).

5. The injection mold for a door panel handle according to claim 1, characterized in that: The top of the positioning template (3) is fixedly connected with multiple guide posts (25).

6. The injection mold for a door panel handle according to claim 4, characterized in that: The core plate (2), the positioning template (3), the mold base plate (4), and the top template (1) are all fixedly connected to the outside of the fixing ears (8).

7. The injection mold for a door panel handle according to claim 4, characterized in that: A junction box (13) is installed on the outside of the mold base plate (4).

8. The injection mold for a door panel handle according to claim 1, characterized in that: The core plate (2) is provided with a heating channel (5) inside.

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