A pin grinding device based on precision mold processing

Abstract

This invention discloses an ejector pin grinding device based on precision mold processing, belonging to the technical field of grinding devices. It includes a base, with multi-axis guide rails fixed to both sides of the top of the base, and a grinding mechanism mounted on the multi-axis guide rails. A mounting seat is mounted on the middle of the top of the base via a longitudinal guide rail, and a positioning component is provided on the mounting seat for positioning ejector pins of different specifications. A transverse guide rail is mounted on the top of the base, located between the side of the multi-axis guide rail and the mounting seat. A mounting plate is slidably mounted on the transverse guide rail. A clamping seat is slidably mounted in the inner cavity of the clamping sleeve via a spring, and a screw is embedded in the inner end of the clamping seat, with a clamping head fixed to the inner end of the screw. This ejector pin grinding device based on precision mold processing can switch between clamping and grinding both ends of the ejector pin, and is suitable for batch grinding of ejector pins of different specifications.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, specifically to an ejector pin polishing device based on precision mold processing. Background Technology

[0002] In the manufacturing of precision molds, the ejector pin plays a crucial role, ensuring the stable ejection of the workpiece. Due to the precision mold's ejection mechanism, the ejector pin's dimensions must precisely match the mold. During production, to guarantee dimensional accuracy, circumferential grinding is required. Existing ejector pin grinding devices suffer from the following problems:

[0003] Ejector grinding devices typically involve arranging multiple ejector pins on a base and then using a grinding mechanism to circumferentially grind their exposed top portions. This requires fixing and rotating the ends of the ejector pins. However, existing ejector grinding devices are not convenient for switching the end fixing and positioning of the ejector pins, which can lead to omissions during the grinding process, requiring secondary grinding and affecting grinding efficiency and one-time molding accuracy. Furthermore, different molds have different ejector pin specifications, and existing ejector grinding devices are not convenient for stably positioning and grinding ejector pins of different specifications, resulting in the need for multiple equipment for grinding operations, increasing costs.

[0004] To address the aforementioned issues, innovative designs are urgently needed based on existing approaches. Summary of the Invention

[0005] The purpose of this invention is to provide an ejector pin grinding device based on precision mold processing to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pin grinding device based on precision mold processing, comprising a base, wherein multi-axis guide rails are fixed on both sides of the top of the base, and a grinding mechanism is installed on the multi-axis guide rails;

[0007] It also includes a mounting base, which is mounted on the middle of the top of the base via a longitudinal guide rail. The mounting base is equipped with a positioning component for positioning ejector pins of different specifications. A transverse guide rail is mounted on the top of the base, which is located between the side of the multi-axis guide rail and the mounting base. A mounting plate is slidably mounted on the transverse guide rail. A clamping sleeve is mounted on the inner side of the mounting plate via a motor. A clamping seat is slidably mounted in the inner cavity of the clamping sleeve via a spring. A screw is mounted on the inner end of the clamping seat via an embedded bolt. A clamping head is fixed to the inner end of the screw.

[0008] A position adjustment assembly is disposed inside the clamping sleeve and between the screw, and the position adjustment assembly is used to adjust the initial position of the clamping head;

[0009] A clamping drive assembly is disposed inside the clamping sleeve and between the transverse guide rail, and the clamping drive assembly is used to drive the clamping seat to move inward.

[0010] Preferably, the positioning component includes a base plate, which is slidably embedded in the mounting base via an electric push rod. A base platform is fixed to the top of the base plate by a vertical bar. The base platform is located in the top cavity of the mounting base. Two positioning plates are rotatably embedded in the top of the base platform. A toothed roller is fixed to the bottom of the positioning plate. A first toothed rack is engaged on the inner side of the toothed roller. The first toothed rack is vertically fixed to the bottom of the top cavity of the mounting base.

[0011] Preferably, the top cavity of the mounting base is designed as a hemispherical structure, and the top cavity of the mounting base is distributed longitudinally at equal intervals.

[0012] Preferably, the positioning plates are symmetrically inclined on the base platform, and the positioning plates rotate on the base platform via toothed rollers and a first toothed rack.

[0013] Preferably, the clamping seats are distributed at equal angles within the clamping sleeve, and the clamping heads on the inner side of the clamping seats have a hemispherical structure.

[0014] Preferably, the position adjustment assembly includes an adjustment ring that slides within the inner cavity of the clamping sleeve, and a second rack is fixed to the outer side of the adjustment ring. A toothed sleeve engages with the second rack and is fixedly sleeved on the cylindrical position of the screw.

[0015] Preferably, the height of the toothed sleeve is greater than the width of the second toothed rack, and the toothed sleeve is located at the outer end of the clamping head.

[0016] Preferably, the clamping drive assembly includes a drive ring, which is slidably embedded in the clamping sleeve via an elastic telescopic rod. The drive ring is located at the inner end of the clamping seat, and a push ring is provided on the inner side of the extended portion of the drive ring. The push ring is mounted on the transverse guide rail via an electric push rod.

[0017] Preferably, the contact portion between the drive ring and the clamping seat is designed as an inclined structure, and when the drive ring moves outward, it pushes the clamping seat to move inward.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention adjusts the height of the base and positioning plate within the bottom cavity of the mounting base according to the specifications of the ejector pin. The bottom of the ejector pin is supported by two inclined positioning plates. During height adjustment, the positioning plates rotate under the action of the toothed roller and the first toothed rack, adjusting the angle between the two positioning plates. This helps to stably support ejector pins of different specifications, while ensuring that the ejector pin and the hemispherical cavity at the top of the mounting base are on the same central axis. This facilitates the uniform adjustment of parameters in the grinding mechanism, making it easier to stably grind the top area of ​​the ejector pin when in contact. Combined with the subsequent rotation of the ejector pin, it enables precise grinding of ejector pins of different specifications.

[0020] 2. This invention uses the synchronous movement of multiple clamping heads to clamp and fix the end of the ejector pin, facilitating its subsequent rotation. During this process, the left and right mounting plates and clamping sleeves can move on the transverse guide rails to alternately clamp and fix the edge of the ejector pin, thus facilitating one-time grinding of the entire ejector pin. Simply moving the positions of the mounting plates and clamping sleeves is sufficient to clamp and release the clamping heads. To accommodate ejector pins of different specifications, the initial position of the clamping heads can be adjusted by moving the adjusting ring in conjunction with the second rack and toothed sleeve adjusting screw, without affecting the subsequent synchronous inward movement of the clamping heads. Furthermore, for ejector pins of different lengths, only the initial position of the pushing ring needs to be adjusted by the electric push rod to allow the clamping heads to move and clamp at different positions. The entire operation is very simple and suitable for batch grinding of ejector pins of different diameters and lengths. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the mounting base of the present invention;

[0023] Figure 3 This is a schematic diagram of the side structure of the mounting base of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the internal structure of the clamping sleeve of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0027] Figure 7 This is a top view of the mounting base of the present invention.

[0028] In the diagram: 1. Base; 2. Multi-axis guide rail; 21. Grinding mechanism; 3. Mounting seat; 41. Base plate; 42. Base platform; 43. Positioning plate; 44. Toothed roller; 45. First rack; 5. Transverse guide rail; 6. Mounting plate; 7. Clamping sleeve; 8. Clamping seat; 9. Screw; 10. Clamping head; 111. Adjusting ring; 112. Second rack; 113. Toothed sleeve; 121. Drive ring; 122. Elastic telescopic rod; 123. Pushing ring. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-7 The present invention provides a technical solution: a pin grinding device based on precision mold processing, including a base 1, a multi-axis guide rail 2 fixed on both sides of the top of the base 1, a grinding mechanism 21 installed on the multi-axis guide rail 2; a mounting seat 3 is installed in the middle of the top of the base 1 through a longitudinal guide rail, and a positioning component is provided on the mounting seat 3 for positioning pins of different specifications.

[0031] In one embodiment of the present invention, the positioning assembly includes a base plate 41, which is slidably embedded in the mounting base 3 via an electric push rod. A base platform 42 is fixed to the top of the base plate 41 by a vertical bar. The base platform 42 is located in the top cavity of the mounting base 3. Two positioning plates 43 are rotatably embedded in the top of the base platform 42. A toothed roller 44 is fixed to the bottom of the positioning plate 43. A first toothed rack 45 is meshed on the inner side of the toothed roller 44. The first toothed rack 45 is vertically fixed to the bottom of the top cavity of the mounting base 3. The top cavity of the mounting base 3 is designed as a hemispherical structure, and the top cavity of the mounting base 3 is evenly spaced longitudinally. The positioning plates 43 are symmetrically inclined on the base platform 42, and the positioning plates 43 rotate on the base platform 42 via the toothed roller 44 and the first toothed rack 45.

[0032] According to the diameter of the ejector pin, the electric push rod in the mounting base 3 drives the base plate 41 to move vertically. The base plate 41 drives the base platform 42 to move vertically through the vertical bar, adjusting the position of the base platform 42 and the positioning plate 43. At the same time, through the meshing of the first rack 45 and the toothed roller 44, the positioning plate 43 is driven to rotate synchronously, adjusting the position and angle of the positioning plate 43.

[0033] In one embodiment of the present invention, a transverse guide rail 5 is installed on the top of the base 1. The transverse guide rail 5 is located between the side of the multi-axis guide rail 2 and the mounting base 3. A mounting plate 6 is slidably arranged on the transverse guide rail 5. A clamping sleeve 7 is installed on the inner side of the mounting plate 6 via a motor. A clamping seat 8 is slidably installed in the cavity of the inner wall of the clamping sleeve 7 via a spring. A screw 9 is installed on the inner end of the clamping seat 8 via an embedded bolt. A clamping head 10 is fixed on the inner end of the screw 9. The clamping seats 8 are evenly distributed in the clamping sleeve 7. The clamping head 10 on the inner side of the clamping seat 8 has a hemispherical structure and is made of rubber material.

[0034] The clamping seat 8 moves inward, which in turn drives the screw 9 and the clamping head 10 to move inward, and the clamping head 10 clamps the end of the ejector pin.

[0035] In one embodiment of the present invention, a position adjustment assembly is disposed inside the clamping sleeve 7 and between the screw 9. The position adjustment assembly is used to adjust the initial position of the clamping head 10. The position adjustment assembly includes an adjustment ring 111, which slides within the inner cavity of the clamping sleeve 7. A second rack 112 is fixed to the outside of the adjustment ring 111. A toothed sleeve 113 engages with the second rack 112 and is fixedly sleeved on the cylindrical position of the screw 9. The height of the toothed sleeve 113 is greater than the width of the second rack 112, and the toothed sleeve 113 is located at the outer end of the clamping head 10.

[0036] The adjusting ring 111 is pushed to move, and the adjusting ring 111 drives the second rack 112 to mesh with the gear sleeve 113, which drives the screw 9 to rotate in the clamping seat 8, so that the screw 9 moves vertically and adjusts the initial position of the screw 9 and the clamping head 10.

[0037] In one embodiment of the present invention, a clamping drive assembly is disposed inside the clamping sleeve 7 and between the transverse guide rail 5. The clamping drive assembly is used to drive the clamping seat 8 to move inward. The clamping drive assembly includes a drive ring 121, which is slidably embedded in the clamping sleeve 7 via an elastic telescopic rod 122. The drive ring 121 is located at the inner end of the clamping seat 8. A push ring 123 is provided on the inner side of the protruding part of the drive ring 121. The push ring 123 is mounted on the transverse guide rail 5 via an electric push rod. The contact part between the drive ring 121 and the clamping seat 8 is designed as a bevel structure. When the drive ring 121 moves outward, it pushes the clamping seat 8 to move inward.

[0038] The mounting plate 6 is moved by the transverse guide rail 5. When the mounting plate 6 moves to the position of the push ring 123, the drive ring 121 contacts the push ring 123 and slides in the clamping sleeve 7 under force. The drive ring 121 contacts the inclined surface of the clamping seat 8, causing the clamping seat 8 to move inward. When the grinding mechanism 21 moves to the position of the corresponding clamping sleeve 7, the transverse guide rail 5 in this direction drives the clamping sleeve 7 away from the ejector pin. With the reset ability of the elastic telescopic rod 122 and the spring, the clamping head 10 is reset, releasing the ejector pin. The clamping head 10 at the other end continues to drive the ejector pin to rotate, and the two ends of the ejector pin are alternately clamped.

[0039] Working principle: First, according to the diameter of the ejector pin, the electric push rod in the mounting base 3 drives the base plate 41 to move vertically. The base plate 41 drives the base platform 42 to move vertically through the vertical bar, adjusting the position of the base platform 42 and the positioning plate 43. At the same time, through the meshing of the first rack 45 and the toothed roller 44, the positioning plate 43 is driven to rotate synchronously, adjusting the position and angle of the positioning plate 43. At the same time, the adjusting ring 111 is pushed to move. The adjusting ring 111 drives the second rack 112 to mesh with the toothed sleeve 113, driving the screw 9 to rotate in the clamping base 8, so that the screw 9 moves vertically, adjusting the initial position of the screw 9 and the clamping head 10. Then, according to the length of the ejector pin, the electric push rod on the transverse guide rail 5 adjusts the initial position of the pushing ring 123, placing multiple ejector pins in the top cavity of the mounting base 3 in sequence. The ejector pins are initially positioned by the opposing inclined positioning plates 43.

[0040] The mounting plate 6 is moved by the automatically controlled electric transverse guide rail 5. When the mounting plate 6 moves to the position of the push ring 123, the drive ring 121 contacts the push ring 123 and slides within the clamping sleeve 7 under force. The drive ring 121 contacts the inclined surface of the clamping seat 8, causing the clamping seat 8 to move inward, which in turn causes the screw 9 and the clamping head 10 to move inward. The clamping head 10 clamps the end of the ejector pin. The clamping sleeve 7 is concentrically set with the installed ejector pin. Then, the grinding mechanism 21 is moved downward and laterally by the automatically controlled electric multi-axis guide rail 2, in conjunction with the electric... The machine drives the clamping sleeve 7 to rotate, which in turn drives the ejector pin to rotate, performing circumferential and overall grinding on the ejector pin. When the grinding mechanism 21 moves to the corresponding position of the clamping sleeve 7, the clamping sleeve 7 is driven away from the ejector pin by the transverse guide rail 5. With the reset capability of the elastic telescopic rod 122 and the spring, the clamping head 10 is reset, releasing the ejector pin. The clamping head 10 at the other end continues to drive the ejector pin to rotate, and the reciprocating operation grinds the ejector pin. Then, all components are reset, and the electric longitudinal guide rail automatically controlled at the bottom of the mounting base 3 drives the mounting base 3 to move longitudinally to perform the grinding operation on the next ejector pin.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pin grinding device based on precision mold processing, comprising a base (1), wherein a multi-axis guide rail (2) is fixed on both sides of the top of the base (1), and a grinding mechanism (21) is installed on the multi-axis guide rail (2). Its features are: It also includes a mounting base (3), which is mounted on the middle of the top of the base (1) via a longitudinal guide rail. The mounting base (3) is provided with a positioning component for positioning different sizes of ejector pins. A transverse guide rail (5) is mounted on the top of the base (1). The transverse guide rail (5) is located between the side of the multi-axis guide rail (2) and the mounting base (3). A mounting plate (6) is slidably mounted on the transverse guide rail (5). A clamping sleeve (7) is mounted on the inner side of the mounting plate (6) via a motor. A clamping seat (8) is slidably mounted in the inner cavity of the clamping sleeve (7) via a spring. A screw (9) is mounted on the inner end of the clamping seat (8) via an embedded bolt. A clamping head (10) is fixed on the inner end of the screw (9). A position adjustment assembly is disposed inside the clamping sleeve (7) and between the screw (9), and the position adjustment assembly is used to adjust the initial position of the clamping head (10); A clamping drive assembly is disposed inside the clamping sleeve (7) and between the transverse guide rail (5), and the clamping drive assembly is used to drive the clamping seat (8) to move inward; The positioning assembly includes a base plate (41), which is slidably embedded in the mounting base (3) by an electric push rod. A base platform (42) is fixed to the top of the base plate (41) by a vertical bar. The base platform (42) is located in the top cavity of the mounting base (3). Two positioning plates (43) are rotatably embedded in the top of the base platform (42). A toothed roller (44) is fixed to the bottom of the positioning plate (43). A first toothed rack (45) is meshed on the inner side of the toothed roller (44). The first toothed rack (45) is vertically fixed to the bottom of the top cavity of the mounting base (3). The top cavity of the mounting base (3) is designed as a hemispherical structure, and the top cavity of the mounting base (3) is distributed longitudinally at equal intervals; The positioning plate (43) is symmetrically inclined on the base (42) and the positioning plate (43) rotates on the base (42) through the toothed roller (44) and the first toothed rack (45); The clamping drive assembly includes a drive ring (121), which is embedded and slidably installed in the clamping sleeve (7) via an elastic telescopic rod (122). The drive ring (121) is located at the inner end of the clamping seat (8). A push ring (123) is provided on the inner side of the extended portion of the drive ring (121). The push ring (123) is installed on the transverse guide rail (5) via an electric push rod. The contact portion between the drive ring (121) and the clamping seat (8) is designed as an inclined structure. When the drive ring (121) moves outward, it pushes the clamping seat (8) to move inward.

2. The ejector pin grinding device based on precision mold processing according to claim 1, characterized in that: The clamping seats (8) are distributed at equal angles within the clamping sleeve (7), and the clamping heads (10) inside the clamping seats (8) have a hemispherical structure.

3. The ejector pin grinding device based on precision mold processing according to claim 2, characterized in that: The position adjustment assembly includes an adjustment ring (111), which slides within the inner cavity of the clamping sleeve (7). A second rack (112) is fixed to the outside of the adjustment ring (111), and a toothed sleeve (113) meshes with the second rack (112). The toothed sleeve (113) is fixedly sleeved on the columnar position of the screw (9).

4. The ejector pin grinding device based on precision mold processing according to claim 3, characterized in that: The height of the toothed sleeve (113) is greater than the width of the second rack (112), and the toothed sleeve (113) is located at the outer end of the clamping head (10).

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