Ejector pin polishing device based on precision mold machining

Abstract

The invention discloses an ejector pin grinding device based on precision mold machining, and relates to the technical field of grinding devices. Comprising a base, multi-axis guide rails are fixed to the two sides of the top of the base, and a grinding mechanism is installed on the multi-axis guide rails; the mounting base is mounted in the middle of the top of the base through a longitudinal guide rail, a positioning assembly is arranged on the mounting base and used for positioning ejector pins of different specifications, a transverse guide rail is mounted at the top of the base and located between the side edge of the multi-axis guide rail and the mounting base, and a mounting plate is slidably arranged on the transverse guide rail and located on the mounting plate. A clamping base is slidably installed in a cavity of the inner wall of the clamping sleeve through a spring in an embedded mode, a screw is installed at the inner end of the clamping base in an embedded bolt mode, and a clamping head is fixed to the inner end of the screw. According to the ejector pin grinding device based on precision mold machining, the two ends of an ejector pin are switched, clamped and ground, and meanwhile the ejector pin grinding device is suitable for batch grinding of ejector pins of different specifications.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, in particular to an ejector pin grinding device based on precision mold processing. Background Art

[0002] When precision molds are being molded and manufactured, the role of the ejector pin is particularly important, as it plays the role of stably ejecting the workpiece. Due to the ejection of precision molds, the size of the ejector pin needs to be strictly matched with the mold. During the production process, in order to ensure dimensional accuracy, it is necessary to perform a circumferential grinding operation. The existing ejector pin grinding device has the following problems: A pin grinding device arranges multiple pins on a base and performs circumferential grinding on the exposed top portions of the pins through a grinding mechanism. This involves fixing and rotating the ends of the pins. However, existing pin grinding devices are not convenient for switching the end fixation and positioning of the pins. As a result, the pins are easily missed during the entire grinding process, requiring secondary grinding, which affects grinding efficiency and primary molding accuracy. Furthermore, different molds have different pin specifications, and existing pin grinding devices are not convenient for stable positioning and grinding of pins of different specifications, resulting in the need for multiple equipment for grinding operations, which increases costs.

[0003] In response to the above problems, it is urgent to carry out innovative design based on the original foundation. Summary of the Invention

[0004] The purpose of the present invention is to provide a pin grinding device based on precision mold processing to solve the problems raised by the above background technology. The technical solution of the present invention addresses the technical problem that the existing technical solution is too single and provides a solution that is significantly different from the existing technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a pin grinding device based on precision mold processing, comprising a base, 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; It also includes a mounting seat, which is mounted on the middle part of the top of the base through a longitudinal guide rail. The mounting seat is provided with a positioning assembly for positioning ejectors of different specifications. A transverse guide rail is installed on the top of the base. The transverse guide rail is located between the side of the multi-axis guide rail and the mounting seat. A mounting plate is slidably provided on the transverse guide rail. A clamping sleeve is installed on the inner side of the mounting plate through a motor. A clamping seat is slidably installed in the inner wall cavity of the clamping sleeve through a spring embedded in the inner end of the clamping seat. A screw is installed on the inner end of the embedded bolt of the clamping seat, and a clamping head is fixed to the inner end of the screw. A position adjustment component is provided between the interior of the clamping sleeve and the screw, and is used to adjust the initial position of the clamping head; A clamping drive assembly is provided between the interior of the clamping sleeve and the transverse guide rail, and is used for driving the clamping seat to move inward.

[0006] Preferably, the positioning assembly includes a base plate, which is embedded and slidably arranged in the mounting seat through an electric push rod, and a base is fixed to the top of the base plate through a vertical bar, and the base is located in the top cavity of the mounting seat, and two positioning plates are embedded and rotatably installed on the top of the base, and a gear roller is fixed to the bottom of the positioning plate, and a first rack is engaged with the inner side of the gear roller, and the first rack is vertically fixed to the bottom of the top cavity of the mounting seat.

[0007] Preferably, the top cavity of the mounting seat is designed as a hemispherical structure, and the top cavities of the mounting seat are distributed at equal intervals in the longitudinal direction.

[0008] Preferably, the positioning plates are symmetrically distributed and tilted on the base platform front and back, and the positioning plates are rotated on the base platform via the toothed roller and the first rack.

[0009] Preferably, the clamping seats are distributed at equal angles inside the clamping sleeve, and the clamping heads inside the clamping seats are hemispherical in structure.

[0010] Preferably, the position adjustment assembly includes an adjusting ring, which slides within a limited position in the inner cavity of the clamping sleeve. A second rack is fixed to the outside of the adjusting ring, and a gear sleeve is engaged with the second rack. The gear sleeve fixing sleeve is arranged on the columnar position of the screw.

[0011] Preferably, the height of the gear sleeve is greater than the width of the second rack, and the gear sleeve is located at the outer end of the clamping head.

[0012] Preferably, the clamping drive assembly includes a drive ring, which is embedded and slidably installed in the clamping sleeve through 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 protruding part of the drive ring. The push ring is installed on the transverse guide rail through an electric push rod.

[0013] Preferably, the contact portion between the driving ring and the clamping seat is designed to be an inclined surface structure, and the driving ring pushes the clamping seat to move inward when it moves outward.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present 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 plate rotates under the action of the gear roller and the first rack, adjusting the angle between the two positioning plates. This helps to stably support ejectors of different specifications and ensures that the ejector pin and the hemispherical cavity at the top of the mounting base are on the same central axis. This facilitates the unified adjustment of the parameters of the grinding mechanism, facilitating stable grinding of the top area of ​​the ejector pin when in contact. Combined with the subsequent rotation of the ejector pin, precise grinding of ejectors of different specifications is achieved. 2. The present invention clamps and fixes the end of the ejector pin through the synchronous movement of multiple clamping heads, which is convenient for subsequent rotation. During this process, the left and right mounting plates and the clamping sleeve can be moved on the transverse guide rail respectively, so as to alternately clamp and fix the edge ends of the ejector pin, thereby facilitating the one-time grinding of the entire ejector pin. The clamping head can be clamped and loosened only by moving the position of the mounting plate and the clamping sleeve. In order to adapt to ejectors of different specifications, the initial position of the clamping head can be adjusted by moving the adjusting ring, cooperating with the second rack and the gear sleeve to adjust the position of the screw, without affecting the subsequent inward synchronous movement of the clamping head. At the same time, for ejectors of different lengths, it is only necessary to adjust the initial position of the push ring through the electric push rod, so that the clamping head can be moved and clamped at different positions. The whole operation is very simple and suitable for batch grinding of ejectors of different diameters and lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 3 This is a schematic diagram of the side structure of the mounting base of the present invention; Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram; Figure 5 This is a schematic diagram of the internal structure of the clamping sleeve of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7 This is a schematic diagram of the top view of the mounting base of the present invention.

[0016] In the figure: 1. base; 2. multi-axis guide rail; 21. grinding mechanism; 3. mounting seat; 41. bottom plate; 42. bottom platform; 43. positioning plate; 44. gear 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. gear sleeve; 121. driving ring; 122. elastic telescopic rod; 123. pushing ring. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 7 The present invention provides a technical solution: a pin grinding device based on precision mold processing, comprising a base 1, multi-axis guide rails 2 fixed on both sides of the top of the base 1, and a grinding mechanism 21 installed on the multi-axis guide rails 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.

[0019] As an embodiment of the present invention, the positioning assembly includes a base plate 41, which is embedded and slidably arranged in the mounting seat 3 through an electric push rod, and a base 42 is fixed to the top of the base plate 41 through a vertical bar. The base 42 is located in the top cavity of the mounting seat 3, and two positioning plates 43 are embedded and rotatably installed on the top of the base 42. A gear roller 44 is fixed to the bottom of the positioning plate 43, and a first rack 45 is engaged with the inner side of the gear roller 44. The first rack 45 is vertically fixed to the bottom of the top cavity of the mounting seat 3; the top cavity of the mounting seat 3 is designed to be a hemispherical structure, and the top cavity of the mounting seat 3 is evenly spaced longitudinally; the positioning plates 43 are symmetrically tilted and distributed on the base 42 front and back, and the positioning plates 43 rotate on the base 42 through the gear roller 44 and the first rack 45; According to the diameter of the ejector pin, the electric push rod in the mounting seat 3 drives the bottom plate 41 to move vertically, and the bottom plate 41 drives the base 42 to move vertically through the vertical bars to adjust the positions of the base 42 and the positioning plate 43. At the same time, the first rack 45 is engaged with the gear roller 44 to drive the positioning plate 43 to rotate synchronously to adjust the position and angle of the positioning plate 43.

[0020] As an 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 seat 3. A mounting plate 6 is slidably provided on the transverse guide rail 5. A clamping sleeve 7 is installed on the inner side of the mounting plate 6 through a motor. A clamping seat 8 is slidably installed in the inner wall cavity of the clamping sleeve 7 through a spring embedded in the inner wall cavity of the clamping sleeve 7. A screw 9 is installed on the inner end of the clamping seat 8 by an embedded bolt, and a clamping head 10 is fixed to the inner end of the screw 9; the clamping seats 8 are distributed at equal angles in the clamping sleeve 7, and the clamping head 10 inside the clamping seat 8 is a hemispherical structure, and the clamping head 10 is made of rubber material; The clamping seat 8 moves inward, thereby driving the screw 9 and the clamping head 10 to move inward, and the end of the ejector pin is clamped by the clamping head 10.

[0021] As an embodiment of the present invention, a position adjustment assembly is arranged between the interior of the clamping sleeve 7 and the screw 9, and 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, and a second rack 112 is fixed to the outside of the adjustment ring 111. A gear sleeve 113 is engaged with the second rack 112, and the gear sleeve 113 is fixedly sleeved on the columnar position of the screw 9; the height of the gear sleeve 113 is greater than the width of the second rack 112, and the gear sleeve 113 is located at the outer end of the clamping head 10; The adjusting ring 111 is pushed to move, and the adjusting ring 111 drives the second rack 112 to engage with the gear sleeve 113, driving the screw 9 to rotate in the clamping seat 8, so that the screw 9 moves vertically, adjusting the initial position of the screw 9 and the clamping head 10.

[0022] As an embodiment of the present invention, a clamping drive assembly is arranged between the interior of the clamping sleeve 7 and the transverse guide rail 5, and 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 embedded and slidably installed in the clamping sleeve 7 through an elastic telescopic rod 122, and 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 portion of the drive ring 121, and the push ring 123 is installed on the transverse guide rail 5 through an electric push rod; the contact portion between the drive ring 121 and the clamping seat 8 is designed as a slope structure, and when the drive ring 121 moves outward, it pushes the clamping seat 8 to move inward; The mounting plate 6 is driven to move 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, driving the clamping seat 8 to move inward. When the grinding mechanism 21 moves to the position corresponding to the 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 to release the ejector pin, while the clamping head 10 at the other end continues to drive the ejector pin to rotate, alternately clamping the two ends of the ejector pin.

[0023] Working principle: First, according to the diameter of the ejector, the electric push rod in the mounting seat 3 drives the bottom plate 41 to move vertically, and the bottom plate 41 drives the bottom platform 42 to move vertically through the vertical bars, and adjusts the position of the bottom platform 42 and the positioning plate 43. At the same time, through the engagement of the first rack 45 and the gear roller 44, the positioning plate 43 is driven to rotate synchronously, and the position and angle of the positioning plate 43 are adjusted. At the same time, the adjusting ring 111 is pushed to move, and the adjusting ring 111 drives the second rack 112 to engage with the gear sleeve 113, driving the screw rod 9 to rotate in the clamping seat 8, so that the screw rod 9 moves vertically, and the initial position of the screw rod 9 and the clamping head 10 is adjusted. Then, according to the length of the ejector, the initial position of the push ring 123 is adjusted by the electric push rod on the transverse guide rail 5, and multiple ejectors are placed in the top cavity of the mounting seat 3 in sequence. The ejector is preliminarily positioned by the oppositely inclined positioning plate 43; The mounting plate 6 is driven to move by the electric transverse guide rail 5 controlled by automation. When the mounting plate 6 moves to the position of the push ring 123, the driving ring 121 contacts the pushing ring 123 and slides in the clamping sleeve 7 under force. The driving ring 121 contacts the inclined surface of the clamping seat 8, driving the clamping seat 8 to move inward, thereby driving the screw 9 and the clamping head 10 to move inward, and clamping the end of the ejector pin by the clamping head 10. The clamping sleeve 7 is concentrically arranged with the installed ejector pin, and then the grinding mechanism 21 is driven to move downward and move laterally by the electric multi-axis guide rail 2 controlled by automation. The machine drives the clamping sleeve 7 to rotate, and then drives the thimble to rotate, and grinds the circumferential and overall thimble. When the grinding mechanism 21 moves to the position corresponding to the clamping sleeve 7, the clamping sleeve 7 is driven away from the thimble through this transverse guide rail 5. Cooperating with the reset ability of the elastic telescopic rod 122 and the spring, the clamping head 10 is reset to release the thimble, and the clamping head 10 at the other end continues to drive the thimble to rotate. The reciprocating operation is used to grind the thimble, and then the various components are reset. The electric longitudinal guide rail automatically controlled at the bottom of the mounting seat 3 drives the mounting seat 3 to move longitudinally to grind the next thimble.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pin grinding device based on precision mold processing, comprising a base (1), multi-axis guide rails (2) fixed on both sides of the top of the base (1), and a grinding mechanism (21) installed on the multi-axis guide rails (2); Its characteristics are: It also includes a mounting seat (3), the mounting seat (3) is mounted on the middle part of the top of the base (1) through a longitudinal guide rail, the mounting seat (3) is provided with a positioning assembly for positioning ejectors of different specifications, the top of the base (1) is provided with a transverse guide rail (5), the transverse guide rail (5) is located between the side of the multi-axis guide rail (2) and the mounting seat (3), a mounting plate (6) is slidably provided on the transverse guide rail (5), a clamping sleeve (7) is installed on the inner side of the mounting plate (6) through a motor, a clamping seat (8) is slidably installed in the inner wall cavity of the clamping sleeve (7) through a spring embedded, a screw rod (9) is installed on the inner end of the clamping seat (8), and a clamping head (10) is fixed on the inner end of the screw rod (9); A position adjustment component, the position adjustment component being arranged between the interior of the clamping sleeve (7) and the screw (9), and the position adjustment component being used to adjust the initial position of the clamping head (10); A clamping drive assembly is provided between the interior of the clamping sleeve (7) and the transverse guide rail (5), and is used to drive the clamping seat (8) to move inward.

2. The thimble grinding device based on precision mold processing according to claim 1, characterized in that: The positioning assembly includes a base plate (41), the base plate (41) is embedded and slidably arranged in the mounting seat (3) through an electric push rod, the top of the base plate (41) is fixed with a base (42) through a vertical bar, the base (42) is located in the top cavity of the mounting seat (3), and two positioning plates (43) are embedded and rotatably installed on the top of the base (42), a gear roller (44) is fixed to the bottom of the positioning plate (43), the inner side of the gear roller (44) is meshed with a first rack (45), and the first rack (45) is vertically fixed to the bottom of the top cavity of the mounting seat (3).

3. The thimble grinding device based on precision mold processing according to claim 2, characterized in that: The top cavity of the mounting seat (3) is designed as a hemispherical structure, and the top cavities of the mounting seat (3) are distributed at equal intervals in the longitudinal direction.

4. The thimble grinding device based on precision mold processing according to claim 3, characterized in that: The positioning plates (43) are symmetrically distributed on the bottom platform (42) in an inclined manner in the front and rear directions, and the positioning plates (43) rotate on the bottom platform (42) via the toothed roller (44) and the first rack (45).

5. The ejector pin grinding device based on precision mold processing according to claim 4, characterized in that: The clamping seats (8) are distributed at equal angles inside the clamping sleeve (7), and the clamping head (10) inside the clamping seat (8) is in a hemispherical structure.

6. The device for polishing an ejector pin based on precision mold processing according to claim 5, characterized in that: The position adjustment assembly comprises an adjustment ring (111), the adjustment ring (111) slidingly limited in the inner cavity of the clamping sleeve (7), a second rack (112) fixed to the outside of the adjustment ring (111), a gear sleeve (113) meshing with the second rack (112), and the gear sleeve (113) fixedly arranged on the columnar position of the screw rod (9).

7. The ejector pin grinding device based on precision mold processing according to claim 6, characterized in that: The height of the tooth sleeve (113) is greater than the width of the second rack (112), and the tooth sleeve (113) is located at the outer end of the clamping head (10).

8. The ejector pin grinding device based on precision mold processing according to claim 7, characterized in that: The clamping drive assembly comprises a drive ring (121), the drive ring (121) being embedded and slidably mounted in the clamping sleeve (7) via an elastic telescopic rod (122), the drive ring (121) being located at the inner end of the clamping seat (8), a push ring (123) being provided on the inner side of the protruding portion of the drive ring (121), and the push ring (123) being mounted on the transverse guide rail (5) via an electric push rod.

9. The ejector pin grinding device based on precision mold processing according to claim 8, characterized in that: The contact portion between the drive ring (121) and the clamping seat (8) is designed as an inclined surface structure, and when the drive ring (121) moves outward, it pushes the clamping seat (8) to move inward.

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