Clamping device for ejector pin machining

Abstract

The utility model relates to a clamping device for machining an ejector pin, which is characterized in that the ejector pin is clamped by a support frame, and when the clamping length of the ejector pin is smaller than the sum of the height of an upper V-shaped hole and the height of a first positioning groove, a first positioning plate is mounted on a second positioning plate and inserted into the first positioning groove to position the ejector pin; on the contrary, the first positioning plate is detached, only the second positioning plate is installed on the supporting frame, and the ejector pin is inserted into the lower V-shaped hole to be clamped. And the first positioning plate is connected with the second positioning plate through a pin hole. A plurality of thimbles are clamped at the same time, so that the clamping and calibration times are reduced in the production process of the thimbles, and the production efficiency is improved. Compared with the prior art, the device has the advantages of high efficiency, wide application, easiness in maintenance and the like.

Description

Technical Field

[0001] The utility model relates to the field of thimble processing, in particular to a clamping device used for thimble processing. Background Art

[0002] Ejector pin clamping devices are primarily used to hold ejector pins during precision machining and production. Ejectors are crucial components in the mold structure, acting as the ejector mechanism for smooth product release. Ejectors are typically made from high-strength steels, such as cold-work and hot-work steels, offering excellent wear resistance and compressive strength. During injection molding and die-casting processes, ejectors require meticulous machining and assembly. To prevent deformation or loosening during machining, clamping devices are required to provide uniform and stable clamping force. Ejector pin machining often involves assembling the mold base. However, this method suffers from the heavy mold weight, increased machine tool load, reduced machine tool accuracy, increased wear, increased maintenance costs, and low processing efficiency. Alternatively, individual ejectors are clamped using separate fixtures. However, this method requires individual leveling of each ejector pin, significantly reducing processing efficiency when operating with a large number of ejectors. Therefore, how to improve the efficiency of ejector processing, reduce the difficulty of installation, prevent the ejector processing device from damaging the machine tool, and reduce maintenance costs are technical problems that need to be solved. Utility Model Content

[0003] The purpose of the present utility model is to overcome the defects of the above-mentioned prior art and to provide a clamping device for ejector pin processing. The ejector pin is clamped by the cooperation of the second positioning plate and the support frame, and the clamping length is adjusted by the first positioning plate, thereby achieving the effects of high efficiency, easy installation and reduced loss.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] According to one aspect of the present invention, a clamping device for ejector processing is provided, comprising: a support frame, an upper V-shaped hole, a slide rail, a lower V-shaped hole, a first positioning groove, a second positioning groove, and a second positioning plate.

[0006] In which, the support frame is an L-shaped structure, and an upper V-shaped hole and a lower V-shaped hole are provided on the vertical part of the support frame, a first positioning groove is provided between the V-shaped hole and the lower V-shaped hole, and a second positioning groove is provided between the lower V-shaped hole and the horizontal part of the support frame; the slide rail is installed on the horizontal part of the support frame; the second positioning plate is installed on the slide rail and slides to adjust the positioning; the top of the second positioning plate is inserted into the first positioning groove, and the bottom of the second positioning plate is inserted into the second positioning groove to clamp and position the ejector pin.

[0007] Furthermore, the upper V-shaped hole corresponds to the lower V-shaped hole, is on the same straight line, and is vertically separated by the first positioning groove.

[0008] Furthermore, the ejector pin is vertically inserted into the support frame and fixed by a first positioning screw on the support frame.

[0009] Furthermore, when the ejector pin is a long ejector pin, the ejector pin is vertically inserted into the upper V-shaped hole, the first positioning groove and the lower V-shaped hole, and the ejector pin side is fixed by the ejector pin fitting surface of the second positioning plate.

[0010] Furthermore, when the ejector pin is a short ejector pin, the first positioning plate is fixed to the second positioning plate through the pin hole and inserted into the first positioning groove.

[0011] Furthermore, when the ejector pin is a short ejector pin, the ejector pin is vertically inserted into the upper V-shaped hole and the first positioning groove, the bottom of the ejector pin is placed on the ejector pin fitting surface of the first positioning plate, and the side of the ejector pin is fixed by the ejector pin fitting surface of the second positioning plate.

[0012] Furthermore, a gap avoidance structure is provided on the fitting surface between the second positioning plate and the support frame, and the gap avoidance depth is the thickness of the first positioning screw exceeding the support frame.

[0013] Furthermore, a first positioning screw hole is provided on the vertical portion of the support frame, and the first positioning screw hole is arranged according to the positions of the upper V-shaped hole and the lower V-shaped hole.

[0014] Furthermore, the slide rail is fixed to the support frame by a second positioning screw.

[0015] Furthermore, the slide rail is a T-slot structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) Improve production efficiency: By clamping multiple ejectors for processing at the same time, the number of clamping and calibration times is reduced. In addition, the air-avoiding structure of the second positioning plate and the groove design on both sides of the air-avoiding structure for easy gripping reduce the difficulty of clamping adjustment and positioning, thereby improving production efficiency.

[0018] (2) Suitable for ejectors of various lengths: Through the combination of the upper V-shaped hole, the first positioning plate and the lower V-shaped hole, the ejector can be switched according to the clamping length. When the clamping length of the ejector is less than the sum of the height of the upper V-shaped hole and the height of the first positioning groove, the first positioning plate is installed on the second positioning plate and inserted into the first positioning groove to position the ejector; conversely, the first positioning plate is removed and only the second positioning plate is installed on the support frame. The ejector is inserted into the lower V-shaped hole and clamped. This is suitable for the clamping length requirements of different ejector production processes.

[0019] (3) Small wear on the ejector machine: The device has a simple and compact structure and causes small wear on the machine during the ejector production process, thus reducing the maintenance cost of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a clamping device used for ejector processing;

[0021] Figure 2 A top view of a clamping device for ejector processing;

[0022] Figure 3 This is a structural diagram of the support frame.

[0023] Explanation of the numbers in the figure: 1. Support frame; 11. Upper V-shaped hole; 12. First positioning screw; 13. Slide rail; 14. Lower V-shaped hole; 15. First positioning screw hole; 16. First positioning groove; 17. Second positioning groove; 2. First positioning plate; 21. First positioning plate ejector pin fitting surface; 3. Second positioning plate; 31. Pin hole; 32. Second positioning plate ejector pin fitting surface; 33. Air avoidance structure. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0025] The basic function of an ejector pin is to assist in ejecting the finished part from the mold cavity after the mold is opened. Upon completion of the injection molding, die-casting, or stamping process, the workpiece needs to be removed from the mold. The ejector pin pushes or pulls the workpiece from the mold cavity, preventing it from sticking or becoming stuck. Ejector processing involves using a clamping device to hold the ejector pin in place to prevent deformation, displacement, or vibration during processing, thereby ensuring precision.

[0026] like Figure 1 As shown, a clamping device for ejector processing includes: a support frame 1, an upper V-shaped hole 11, a slide rail 13, a lower V-shaped hole 14, a first positioning groove 16, a second positioning groove 17, and a second positioning plate 3. Figure 2 Shown is a top view of the clamping device used for ejector machining.

[0027] Among them, the support frame 1 is an L-shaped structure, and an upper V-shaped hole 11 and a lower V-shaped hole 14 are provided on the vertical part of the support frame 1. A first positioning groove 16 is provided between the V-shaped hole 11 and the lower V-shaped hole 14, and a second positioning groove 17 is provided between the lower V-shaped hole 14 and the horizontal part of the support frame 1. The slide rail 13 is installed on the horizontal part of the support frame 1; the second positioning plate 3 is installed on the slide rail 13, and the positioning is adjusted and calibrated by sliding back and forth. The top of the second positioning plate 3 is inserted into the first positioning groove 16, and the bottom of the second positioning plate 3 is inserted into the second positioning groove 17 to clamp and position the ejector pin. The positions of the first positioning groove 16 and the second positioning groove 17 are as shown in FIG. Figure 3 shown.

[0028] The upper V-shaped hole 11 corresponds to the lower V-shaped hole 14, both are on the same straight line, and are vertically separated by the first positioning groove 16. The height of the first positioning groove 16 is greater than the height of the second positioning groove 17. The fitting surface of the second positioning plate 3 and the support frame 1 is provided with an air avoidance structure 33, and the air avoidance depth is the thickness of the first positioning screw 12 higher than the support frame 1. The second positioning plate 3 is easy to install and adjust through the air avoidance structure 33 and the holding grooves on both sides of the air avoidance structure. The vertical part of the support frame 1 is provided with a first positioning screw hole 15, and the first positioning screw hole 15 is set according to the position of the upper V-shaped hole 11 and the lower V-shaped hole 14. The slide rail 13 is fixed to the support frame 1 by the second positioning screw. The slide rail 13 is a T-slot structure. The side shape of the second positioning plate 3 is set according to the shape of the slide rail, the first positioning groove 16, the second positioning groove 17 and the structure of the first positioning plate 2.

[0029] The ejector pin is vertically inserted into the support frame 1 and fixed by the first positioning screw 12 on the support frame 1. When the clamping length of the ejector pin is less than the sum of the height of the upper V-shaped hole 11 and the height of the first positioning groove 16, the ejector pin is a long ejector pin; otherwise, the ejector pin is a short ejector pin. When the ejector pin is a long ejector pin, the ejector pin is vertically inserted into the upper V-shaped hole 11, the first positioning groove 16 and the lower V-shaped hole 14, and the side of the ejector pin is fixed by the ejector pin fitting surface 32 of the second positioning plate. When the ejector pin is a short ejector pin, the first positioning plate 2 is fixed to the second positioning plate 3 through the pin hole 31 and inserted into the first positioning groove 16. At this time, the ejector pin is vertically inserted into the upper V-shaped hole 11 and the first positioning groove 16, the bottom of the ejector pin is placed on the ejector pin fitting surface 21 of the first positioning plate, and the side of the ejector pin is fixed by the ejector pin fitting surface 32 of the second positioning plate.

[0030] During the installation and use of the device of this embodiment, the ejector pin is first placed in the upper V-shaped hole 11 of the support frame 1; when the ejector pin is a long ejector pin, the ejector pin is vertically inserted into the upper V-shaped hole 11, the first positioning groove 16 and the lower V-shaped hole 14, and the second positioning plate 3 is slid so that it is inserted into the first positioning groove 16 and the second positioning groove 17. The ejector pin is clamped by the ejector pin fitting surface of the second positioning plate to prevent the ejector pin from rotating; when the ejector pin is a short ejector pin, the ejector pin is inserted into the upper V-shaped hole 11, the first positioning plate 2 is fixed to the second positioning plate 3 through the pin hole 31, and inserted into the first positioning groove 16. At this time, the bottom of the ejector pin is placed on the ejector pin fitting surface 21 of the first positioning plate, and the side of the ejector pin is fixed by the ejector pin fitting surface 32 of the second positioning plate; after calibrating the ejector pin clamping position, the first positioning screw hole 15 is used to fix the side of the ejector pin; the clamping device is placed in the processing machine to calibrate the processing position. Depending on whether the first positioning plate 2 is installed, the length of the ejector pin clamping can be adjusted to meet the production needs of different ejectors.

[0031] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A clamping device for ejector pin processing, characterized in that: include: Support frame (1), upper V-shaped hole (11), slide rail (13), lower V-shaped hole (14), first positioning groove (16), second positioning groove (17), second positioning plate (3); The support frame (1) is an L-shaped structure, an upper V-shaped hole (11) and a lower V-shaped hole (14) are provided on the vertical portion of the support frame (1), a first positioning groove (16) is provided between the upper V-shaped hole (11) and the lower V-shaped hole (14), and a second positioning groove (17) is provided between the lower V-shaped hole (14) and the horizontal portion of the support frame (1); the slide rail (13) is installed on the horizontal portion of the support frame (1); the second positioning plate (3) is installed on the slide rail (13) and is slidably adjusted for positioning; the top of the second positioning plate (3) is inserted into the first positioning groove (16), and the bottom of the second positioning plate (3) is inserted into the second positioning groove (17) to clamp and position the ejector pin.

2. A clamping device for ejector pin processing according to claim 1, characterized in that: The upper V-shaped hole (11) corresponds to the lower V-shaped hole (14), is on the same straight line, and is vertically spaced apart by a first positioning groove (16).

3. A clamping device for ejector pin processing according to claim 1, characterized in that: The ejector pin is vertically inserted into the support frame (1) and fixed by a first positioning screw (12) on the support frame (1).

4. A clamping device for ejector pin processing according to claim 3, characterized in that: When the ejector pin is a long ejector pin, the ejector pin is vertically inserted into the upper V-shaped hole (11), the first positioning groove (16) and the lower V-shaped hole (14), and the ejector pin side is fixed by the ejector pin fitting surface (32) of the second positioning plate.

5. The clamping device for ejector pin processing according to claim 3, characterized in that: When the ejector pin is a short ejector pin, the first positioning plate (2) is fixed on the second positioning plate (3) through the pin hole (31) and inserted into the first positioning groove (16).

6. A clamping device for ejector pin processing according to claim 5, characterized in that: When the ejector pin is a short ejector pin, the ejector pin is vertically inserted into the upper V-shaped hole (11) and the first positioning groove (16), the bottom of the ejector pin is placed on the ejector pin fitting surface (21) of the first positioning plate, and the side surface of the ejector pin is fixed by the ejector pin fitting surface (32) of the second positioning plate.

7. The clamping device for ejector pin processing according to claim 1, characterized in that: The fitting surface between the second positioning plate (3) and the support frame (1) is provided with a clearance structure (33), and the clearance depth is the thickness of the first positioning screw (12) above the support frame (1).

8. The clamping device for ejector pin processing according to claim 1, characterized in that: A first positioning screw hole (15) is provided on the vertical portion of the support frame (1), and the first positioning screw hole (15) is arranged according to the positions of the upper V-shaped hole (11) and the lower V-shaped hole (14).

9. The clamping device for ejector pin processing according to claim 1, characterized in that: The slide rail (13) is fixed to the support frame (1) via a second positioning screw.

10. The clamping device for ejector pin processing according to claim 9, characterized in that: The slide rail (13) is a T-slot structure.

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