A demolding mechanism of an injection mold for an automobile panel part

Abstract

The utility model discloses a kind of demolding mechanisms of automobile plate class parts injection mold, including mould body and moving plate, the moving plate is set directly below mould body, four demolding components are installed between the moving plate and mould body, the demolding component includes the push column of sliding plug-in in the inside of mould body, the push column top one end coaxially fixed with push head, the mould body bottom inner wall is provided with the accommodating groove compatible with push head, the push column circumferential outer wall bottom coaxially fixed with bevel gear one, the moving plate top outer wall is fixedly connected with mounting seat, the inside rotationally connected with bevel gear two of bevel gear one meshing of mounting seat, the utility model is equipped with demolding component, can in the process that material is pushed out mould body forming cavity, push column also will continue to rotate, to ensure that the workpiece of forming is no longer bonded with each component, without more a taking process.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically to a demolding mechanism for injection molds of automotive sheet metal parts. Background Technology

[0002] Automotive sheet metal parts typically have irregular contours and diverse structural features. For example, automotive interior panels may have complex curved surfaces, reinforcing ribs, snap-fit ​​structures, etc. Therefore, injection molding is often used for processing during production.

[0003] A search revealed a utility model patent with Chinese patent publication number CN217293271U, which discloses an injection mold for automatically demolding concave automotive parts. The mold includes an upper mold base and a lower mold base. A base is fixedly connected to the bottom of the lower mold base, and a core is also fixedly connected to the lower mold base. A push rod is slidably connected through the lower mold base, and a sliding plate is fixedly connected to the bottom of the push rod.

[0004] The aforementioned device uses a push rod to demold the workpiece. After demolding, the workpiece will still stick to the surface of the push rod, so a removal process is required. Due to its high temperature, this process may cause burns to personnel, and there is room for improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a demolding mechanism for injection molds of automotive sheet metal parts, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a demolding mechanism for an injection mold of automotive sheet metal parts, comprising a mold body and a movable plate, wherein the movable plate is disposed directly below the mold body, and four demolding components are installed between the movable plate and the mold body. Each demolding component includes a pusher column slidably inserted into the mold body, a pusher head coaxially fixed at one end of the top of the pusher column, a receiving groove adapted to the pusher head being provided on the inner wall of the bottom of the mold body, a bevel gear one coaxially fixed at the bottom of the outer circumference of the pusher column, a mounting base fixedly connected to the outer wall of the top of the movable plate, a bevel gear two meshing with the bevel gear one being rotatably connected inside the mounting base, and a triggering structure being provided outside the bevel gear two, the triggering structure including a driven gear and a rack.

[0007] As a further preferred embodiment of this technical solution, the driven gear and the bevel gear are coaxially fixed at one end, the rack is fixedly connected to the bottom outer wall of the mold body, the driven gear meshes with the rack, and the moving plate has a clearance hole corresponding to the position of the rack inside.

[0008] During the process of the material being pushed out of the forming cavity of the mold body, the pusher column will continue to rotate, thereby ensuring that the formed workpiece will no longer stick to the components, eliminating the need for an additional handling process. The moving plate drives the mounting base and the pusher column to move synchronously. The pusher head at the top of the pusher column moves out of the mold body, and the workpiece will also be pushed out of the forming cavity by the pusher head. At the same time, the driven gear rotatably connected inside the mounting base will be rotated by the meshing of the rack during movement. The driven gear drives the second bevel gear to rotate, and the second bevel gear drives the first bevel gear to rotate through meshing. The first bevel gear drives the pusher column and the pusher head to rotate, and the pusher head will separate from the workpiece.

[0009] As a further preferred embodiment of this technical solution, a reset assembly is installed at the bottom of the mold body. The reset assembly includes four guide pillars, all of which are fixedly connected to the outer wall of the bottom of the mold body. The moving plate is slidably sleeved on the outside of the four guide pillars. Four springs are fixedly connected between the mold body and the moving plate, and the four springs are respectively sleeved on the outside of the four guide pillars.

[0010] The bottom layer of the pusher head is coated with TiN, which can improve the adhesion and hardness of the coating. The bottom layer is also coated with DLC, which has a sufficiently low coefficient of friction to effectively reduce the friction between the pusher head and the workpiece, thereby reducing energy consumption and wear. It can also withstand greater pressure and wear, thus extending the service life of the pusher head.

[0011] As a further preferred embodiment of this technical solution, a connecting ring of the same horizontal setting is fixedly installed at one end of the bottom of the four guide pillars. When the moving plate is in contact with the connecting ring, the top wall of the pusher head and the bottom inner wall of the mold body remain at the same level.

[0012] As a further preferred embodiment of this technical solution, a mounting bracket is fixedly connected to the bottom outer wall of the mold body, and a vertically arranged cylinder is fixedly installed on the bottom inner wall of the mounting bracket, with the cylinder located directly below the moving plate.

[0013] As a further preferred embodiment of this technical solution, the surface of the pusher head is provided with a TiN coating, and the TiN coating is provided with a DLC coating on the outside.

[0014] As a further preferred embodiment of this technical solution, the bottom edge of the outer edge of the pusher head is set as an arc-shaped edge.

[0015] This utility model provides a demolding mechanism for injection molds of automotive sheet metal parts, which has the following beneficial effects:

[0016] (1) By setting a demolding component, the present invention can ensure that the push column will continue to rotate during the process of the material being pushed out of the forming cavity of the mold body, thereby ensuring that the formed workpiece will no longer stick to the components and that there is no need for an additional picking process. The moving plate drives the mounting base and the push column to move synchronously. The push head at the top of the push column moves out of the mold body, and the workpiece will also be pushed out of the forming cavity by the push head. At the same time, the driven gear rotatably connected inside the mounting base will be meshed and rotated by the rack when it moves. The driven gear drives the second bevel gear to rotate, and the second bevel gear drives the first bevel gear to rotate through meshing. The first bevel gear drives the push column and the push head to rotate, and the push head will separate from the workpiece.

[0017] (2) By setting a pusher head, the bottom layer of the pusher head is provided with a TiN coating, which can improve the adhesion and hardness of the coating. The bottom layer is also provided with a DLC coating, which has a sufficiently low coefficient of friction, which can effectively reduce the friction between the pusher head and the workpiece, reduce energy consumption and wear, and withstand greater pressure and wear, thus extending the service life of the pusher head. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 This is a partially enlarged structural schematic diagram of the present invention;

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0022] In the diagram: 1. Mold body; 2. Mounting bracket; 3. Cylinder; 4. Moving plate; 5. Reset assembly; 6. Demolding assembly; 501. Guide post; 502. Spring; 503. Connecting ring; 601. Pusher post; 602. Pusher head; 603. Bevel gear one; 604. Mounting base; 605. Bevel gear two; 606. Driven gear; 607. Clearance hole; 608. Rack. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 2 , Figure 3 and Figure 4As shown in this embodiment, a demolding mechanism for an injection mold of automotive sheet metal parts includes a mold body 1 and a movable plate 4. The movable plate 4 is located directly below the mold body 1. Four demolding components 6 are installed between the movable plate 4 and the mold body 1. Each demolding component 6 includes a pusher column 601 that is slidably inserted into the mold body 1. A pusher head 602 is coaxially fixed to one end of the top of the pusher column 601. A receiving groove adapted to the pusher head 602 is provided on the inner wall of the bottom of the mold body 1. A bevel gear 603 is coaxially fixed to the bottom of the outer circumference of the pusher column 601. A mounting base 604 is fixedly connected to the outer wall of the top of the movable plate 4. A bevel gear 605 that meshes with the bevel gear 603 is rotatably connected inside the mounting base 604. A triggering structure is provided outside the bevel gear 605. The triggering structure includes a driven gear 606 and a rack 608.

[0025] Driven gear 606 is coaxially fixed to one end of bevel gear 605. Rack 608 is fixedly connected to the bottom outer wall of mold body 1. Driven gear 606 meshes with rack 608. The moving plate 4 has a clearance hole 607 corresponding to the position of rack 608.

[0026] The moving plate 4 drives the mounting base 604 and the pusher column 601 to move synchronously. The pusher head 602 at the top of the pusher column 601 moves out of the mold body 1, and the workpiece is also pushed out of the forming cavity by the pusher head 602. At the same time, the driven gear 606, which is rotatably connected inside the mounting base 604, will be meshed and rotated by the rack 608 when it moves. The driven gear 606 drives the second bevel gear 605 to rotate. The second bevel gear 605 drives the first bevel gear 603 to rotate through meshing. The first bevel gear 603 drives the pusher column 601 and the pusher head 602 to rotate, and the pusher head 602 will separate from the workpiece.

[0027] like Figure 2 and Figure 3 As shown, a reset assembly 5 is installed at the bottom of the mold body 1. The reset assembly 5 includes four guide pillars 501. The four guide pillars 501 are all fixedly connected to the bottom outer wall of the mold body 1. The moving plate 4 is slidably sleeved on the outside of the four guide pillars 501. Four springs 502 are fixedly connected between the mold body 1 and the moving plate 4. The four springs 502 are respectively sleeved on the outside of the four guide pillars 501.

[0028] Four guide pillars 501 are fixedly installed with connecting rings 503 set at the same horizontal level at one end of their bottom. When the moving plate 4 is in contact with the connecting rings 503, the top wall of the pusher head 602 is at the same level as the bottom inner wall of the mold body 1. This can improve the stability of the four guide pillars 501 and also limit the movement of the moving plate 4, thereby preventing the moving plate 4 from detaching from the guide pillars 501.

[0029] With the constraints of multiple guide pillars 501, the movement of the movable plate 4 will be stable enough to avoid obstruction of the material discharge process. At the same time, the spring 502 will also be compressed. After the demolding work is completed, the spring 502 will push the movable plate 4 and the pusher pillar 601 back to their original positions to facilitate the next work.

[0030] like Figure 1 and Figure 2 As shown, a mounting bracket 2 is fixedly connected to the bottom outer wall of the mold body 1, and a vertically arranged cylinder 3 is fixedly installed on the bottom inner wall of the mounting bracket 2. The cylinder 3 is located directly below the moving plate 4.

[0031] like Figure 3 As shown, the surface of the pusher head 602 is coated with a TiN coating, and a DLC coating is provided on the outside of the TiN coating. The bottom layer of the pusher head 602 is coated with a TiN coating, which can improve the adhesion and hardness of the coating. The bottom layer is also coated with a DLC coating, which has a sufficiently low coefficient of friction, which can effectively reduce the friction between the pusher head 602 and the workpiece, reduce energy consumption and wear, and withstand greater pressure and wear, thus extending the service life of the pusher head 602.

[0032] like Figure 3 As shown, the bottom edge of the pusher head 602 is set as an arc edge, which has a guiding function, so as to ensure that when the pusher head 602 is driven to retract, it can enter the receiving groove of the mold body 1.

[0033] This utility model provides a demolding mechanism for injection molds of automotive sheet metal parts, and its specific working principle is as follows:

[0034] When the device is working, after the two molds for forming the workpiece separate, the cylinder 3 inside the mounting frame 2 is activated, and the output end of the cylinder 3 pushes the moving plate 4 upward.

[0035] With the constraints of multiple guide pillars 501, the movement of the movable plate 4 will be sufficiently stable, preventing obstruction during the material discharge process. Simultaneously, the spring 502 will be compressed, and after the demolding process is complete, the spring 502 will push the movable plate 4 and the pusher pillars 601 back to their original positions, facilitating the next operation.

[0036] The movable plate 4 drives the mounting base 604 and the pusher column 601 to move synchronously. The pusher head 602 at the top of the pusher column 601 moves out of the mold body 1, and the workpiece is also pushed out of the molding cavity by the pusher head 602. At the same time, the driven gear 606, which is rotatably connected inside the mounting base 604, will be meshed with and rotate by the rack 608 during movement. The driven gear 606 drives the second bevel gear 605 to rotate, and the second bevel gear 605 drives the first bevel gear 603 to rotate through meshing. The first bevel gear 603 drives the pusher column 601 and the pusher head 602 to rotate, and the pusher head 602 will separate from the workpiece.

[0037] Furthermore, the two pusher columns 601 at one end rotate in opposite directions, and when they rotate, they will help each other, so as not to cause the workpiece to rotate and thus prevent them from separating.

[0038] When installing the mold, simply set the mold body 1 to a vertical position. When the workpiece is no longer bonded, it will fall directly. A receiving structure can be set at the bottom.

[0039] The bottom layer of the pusher head 602 is coated with TiN, which can improve the adhesion and hardness of the coating. The bottom layer is also coated with DLC, which has a sufficiently low coefficient of friction to effectively reduce the friction between the pusher head 602 and the workpiece, thereby reducing energy consumption and wear, and can withstand greater pressure and wear, thus extending the service life of the pusher head 602.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A demolding mechanism for an injection mold of automotive sheet metal parts, comprising a mold body (1) and a movable plate (4), characterized in that: The movable plate (4) is located directly below the mold body (1). Four demolding components (6) are installed between the movable plate (4) and the mold body (1). Each demolding component (6) includes a pusher column (601) that is slidably inserted into the mold body (1). A pusher head (602) is coaxially fixed at one end of the top of the pusher column (601). A receiving groove adapted to the pusher head (602) is provided on the inner wall of the bottom of the mold body (1). A bevel gear (603) is coaxially fixed at the bottom of the outer circumference of the pusher column (601). A mounting base (604) is fixedly connected to the outer wall of the top of the movable plate (4). A bevel gear (605) that meshes with the bevel gear (603) is rotatably connected inside the mounting base (604). A triggering structure is provided outside the bevel gear (605). The triggering structure includes a driven gear (606) and a rack (608).

2. The demolding mechanism for an injection mold of automotive sheet metal parts according to claim 1, characterized in that: The driven gear (606) is coaxially fixed to one end of the bevel gear (605), the rack (608) is fixedly connected to the bottom outer wall of the mold body (1), the driven gear (606) meshes with the rack (608), and the moving plate (4) has a clearance hole (607) inside that corresponds to the position of the rack (608).

3. The demolding mechanism for an injection mold of automotive sheet metal parts according to claim 1, characterized in that: A reset assembly (5) is installed at the bottom of the mold body (1). The reset assembly (5) includes four guide pillars (501). The four guide pillars (501) are fixedly connected to the bottom outer wall of the mold body (1). The moving plate (4) is slidably sleeved on the outside of the four guide pillars (501). Four springs (502) are fixedly connected between the mold body (1) and the moving plate (4). The four springs (502) are respectively sleeved on the outside of the four guide pillars (501).

4. The demolding mechanism for an injection mold of automotive sheet metal parts according to claim 3, characterized in that: The four guide pillars (501) are fixedly installed with the same horizontally arranged connecting ring (503) at one end of their bottom. When the moving plate (4) is in contact with the connecting ring (503), the top wall of the pusher head (602) and the bottom inner wall of the mold body (1) are kept at the same level.

5. The demolding mechanism for an injection mold of automotive sheet metal parts according to claim 1, characterized in that: The bottom outer wall of the mold body (1) is fixedly connected to the mounting bracket (2), and the bottom inner wall of the mounting bracket (2) is fixedly installed with a vertically arranged cylinder (3), which is located directly below the moving plate (4).

6. The demolding mechanism for an injection mold of automotive sheet metal parts according to claim 1, characterized in that: The surface of the pusher head (602) is provided with a TiN coating, and the TiN coating is provided with a DLC coating on the outside.

7. The demolding mechanism for an injection mold of automotive sheet metal parts according to claim 1, characterized in that: The bottom edge of the pusher head (602) is set as an arc edge.

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