CN116079587A - Clamp and ejector rod preparation system - Google Patents

Abstract

The invention belongs to the technical field of clamps and discloses a clamp and a push rod preparation system. The fixture comprises a fixture seat, a base, a movable reference table, a positioning table and a clamping assembly, wherein the positioning table is arranged on the movable reference table and is provided with a plurality of positioning grooves at intervals along a second direction; the clamping assembly comprises a pressing frame and a pushing block, a clamping sliding block capable of sliding along a second direction is arranged in the pressing frame, a plurality of first positioning edges are arranged on one side of the positioning table at intervals along the second direction, the pushing block is in threaded connection with the positioning table through a first fastening piece, the first positioning edges and the groove walls of the positioning grooves form accommodating areas, and the first fastening piece is used for adjusting the distance between the first positioning edges and the groove walls of the positioning grooves. The distance between the movable reference table and the base is adjusted, the height required by the ejector rod is met, the first fastener is screwed into the jig base, and the ejector rod with different cross sections is clamped by increasing or reducing the accommodating area.

Description

Fixture and Ejector Preparation System

technical field

The invention relates to the technical field of fixtures, in particular to a fixture and a mandrel preparation system.

Background technique

The square ejector rod is the product ejection mechanism in the mold, which needs to ensure the normal demoulding of the product after injection molding and at the same time ensure the appearance of the product.

At present, the square mandrel is usually processed by forming grinding to ensure the processing accuracy of the height of the square mandrel. The existing forming mill fixture can clamp multiple square ejector pins, but the clamping is cumbersome, and each square ejector pin must be fixed with a corresponding screw, resulting in too long clamping time and reducing the processing efficiency of the square ejector pin, which is not conducive to square ejector pins. Mass production of ejector pins; and the forming mill fixture can only clamp square ejector pins with the same cross-sectional area, which reduces the scope of application of the fixture.

Contents of the invention

The object of the present invention is to provide a fixture and ejector pin preparation system, which can not only clamp multiple ejector pins at one time, but also be suitable for clamping ejector pins with different cross-sectional areas while reducing the number of screws used.

For reaching this purpose, the present invention adopts following technical scheme:

In a first aspect, the present application provides a fixture, including: a jig base, the opposite ends of the jig base are provided with a base and a movable reference platform, and the movable reference platform can be moved along a first direction relative to the jig base. To move, the base is provided with a limiting surface towards the side of the movable reference platform; the positioning platform is installed on the movable reference platform, and the positioning platform is provided with several positioning grooves at intervals along the second direction; the clamping assembly , including a pressing frame and a push block, the pressing frame is provided with a clamping slider capable of sliding along the second direction, and the side of the clamping slider facing the positioning table is arranged at intervals along the second direction Several first positioning edges, the push block is threadedly connected with the positioning table through the first fastener so that the first positioning edge and the groove wall of the positioning groove form an accommodation area, and the first fastening The component is used to adjust the distance between the first positioning edge and the wall of the positioning groove.

As an optional solution for the clamp, two clamping sliders are provided, and a first elastic member is respectively connected between each clamping slider and the inner side wall of the pressing frame, and the first elastic The component is used to make the two clamping sliders approach each other, the pushing block abuts against the two clamping sliders, and the pushing block is used to push the clamping slider to move toward the positioning table and move along the second direction.

As an optional solution for the clamp, the inner wall of the pressing frame is provided with a first guide protrusion extending along the second direction, the clamping slider is provided with a first guide chute, and the first The guide protrusion is slidably disposed in the first guide chute.

As an optional solution for the clamp, the clamp further includes several pressing heads, the pressing heads are arranged on the side of the pressing frame facing the positioning platform and can be extended or retracted relative to the pressing frame, Each of the accommodation areas is correspondingly provided with at least one pressure head.

As an optional solution for the clamp, the clamping assembly also includes a second elastic member and a cover frame, and the pressing frame is provided with a connected slotted hole and a circular hole, and the cover frame is installed on the On the compression frame and block the circular hole, a segment of the indenter is pierced in the inline hole, a cylindrical section of the indenter is pierced in the circular hole, the The second elastic member is pressed between the cylindrical section and the cover frame.

As an optional solution of the clamp, the end of the push block opposite to the positioning platform passes through the cover frame, and the push block is slidably connected to the inner side wall of the cover frame along a third direction.

As an optional solution for the fixture, one side of the positioning platform facing the movable reference platform is concavely provided with a dovetail groove extending along the second direction, and the side of the movable reference platform facing the positioning platform is convexly provided with a dovetail convex The dovetail protruding part is arranged in the dovetail groove, and the second fastener is connected with the movable reference platform through the through hole.

As an optional solution for the fixture, the movable reference table is provided with a guide column extending along the first direction, and the fixture seat is provided with a guide hole, and the guide column is slidably arranged on the movable reference table relative to one end of the movable reference table. inside the guide hole.

As an optional solution for the fixture, the movable reference table is provided with a rack extending along the first direction, the jig seat is provided with a first guide groove, and the end of the rack that is opposite to the movable reference table slides Placed in the first guide groove, a locking assembly is provided on the jig base, and the locking assembly engages with the rack to limit the distance between the movable reference platform and the base.

As an optional solution for the fixture, the fixture seat is provided with a second guide groove extending along a third direction and communicating with the first guide groove, and the locking assembly includes a third elastic member and a positioning buckle, so The positioning buckle slides in the second guide groove, one end of the positioning buckle protrudes from the second guide groove and engages with the rack, and the other end of the positioning buckle connects with the first The third elastic member is provided between the groove bottoms of the two guide grooves, and the third elastic member is used to make the positioning buckle move toward the rack.

As an optional solution for the clamp, the locking assembly further includes a handle and a mounting plate, the mounting plate is arranged at the notch of the second guide groove, and the mounting plate is provided with a third guide extending in a third direction One end of the handle is connected to the positioning buckle, and the other end of the handle passes through the side wall of the third guide groove and is placed outside the third guide groove.

In the second aspect, the present application provides a ejector rod preparation system, including a grinding machine and the clamp as described in any one of the first aspect or the first aspect above, the clamp is used to clamp the ejector rod, and the clamp clamps The ejector pin is in contact with the grinder, and the grinder is used for grinding the ejector pin.

Compared with prior art, the beneficial effect of the present invention:

In the jig provided by the present invention, a base and a movable reference platform are arranged at opposite ends of the fixture seat, and the movable reference platform can slide (or be called moving) relative to the fixture seat along the first direction for adjusting the movable reference platform relative to the base. The distance between them meets the height required by the ejector rod; the positioning platform on the movable reference platform is provided with positioning grooves, and multiple accommodations are formed between the multiple first positioning edges on the clamping slider and the groove walls of the multiple positioning grooves. Area, suitable for clamping ejector rods with different cross-sectional areas (such as square ejector rods or round ejector rods), one end of the ejector rod rests on the limit surface of the base, and the tail end of the ejector rod passes through the receiving area. The reference planes of the plurality of ejector pins are limit surfaces, therefore, the height of the ejector pins prepared in the same batch can be precisely controlled. Moreover, the opposite two sides of the push rod are clamped between the first positioning edge and the groove wall of the positioning groove, and the other two opposite sides of the push rod are clamped between the pressing frame and the groove bottom of the positioning groove In this way, all-round clamping of the ejector rod can be realized to ensure the stability of the clamping; the first fastener is screwed and fixed on the jig seat, and the push block can push the first positioning edge of the clamping slider close to the positioning groove The wall of the groove, by increasing or reducing the accommodation area to clamp ejector rods with different cross-sectional areas; the pressing frame can be pressed onto the positioning table with a single first fastener, reducing the use of the first fastener Quantity, multiple ejector pins can be clamped at one time, expanding the scope of application of the fixture, which is conducive to the mass production of ejector pins; the positioning table and clamping components can be replaced, which is convenient for maintenance and avoids the scrapping of the entire fixture due to failure of a single part , reduce the cost of use.

The ejector rod preparation system provided by the present invention adjusts the distance between the movable reference table and the base, and the grinder grinds the ejector rod to meet the processing height required by the ejector rod; the two opposite sides of the ejector rod are clamped in the first position Between the edge and the groove wall of the positioning groove, the other two sides opposite to the ejector rod are clamped between the compression frame and the groove bottom of the positioning groove, so as to realize the clamping of the ejector rod in all directions; screw the first fastening The parts are screwed into the fixture seat, and the ejector pins with different cross-sectional areas are clamped by increasing or reducing the accommodation area.

Description of drawings

Fig. 1 is a schematic structural view of a clamp provided by an embodiment of the present invention in an unadjusted state;

Fig. 2 is a schematic structural view of the clamp provided by the embodiment of the present invention in a height-adjusted state;

Fig. 3 is a schematic diagram of the first explosion of the clamp provided by the embodiment of the present invention;

Fig. 4 is a partial enlarged view of place A in Fig. 3;

Fig. 5 is a schematic diagram of the second explosion of the clamp provided by the embodiment of the present invention;

Fig. 6 is a partial enlarged view of place B in Fig. 5;

Fig. 7 is a schematic structural diagram of a clamping slider provided by an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of a positioning platform provided by an embodiment of the present invention;

Fig. 9 is a schematic structural view of an indenter provided by an embodiment of the present invention;

Fig. 10 is an exploded schematic diagram of the compression frame and the cover frame provided by the embodiment of the present invention;

Fig. 11 is a partial exploded view of the locking assembly provided by the embodiment of the present invention on the jig seat;

Fig. 12 is an exploded view of the first viewing angle of the compression frame provided by the embodiment of the present invention;

Fig. 13 is an exploded view of the second viewing angle of the compression frame provided by the embodiment of the present invention;

Fig. 14 is a schematic diagram of the third type of explosion of the clamp according to the embodiment of the present invention.

In the picture:

1. Fixture seat; 2. Base; 3. Movable reference platform; 4. Positioning platform; 5. Clamping component; 6. Pressure head; 61. One field; 62. Cylindrical section; 8. The third fastener; 9. The push rod; 10. The locking assembly; 101. The third elastic member; 102. The positioning buckle; 103. The handle; 104. The mounting plate; 1041. The third guide groove;

11. Guide hole; 12. First guide groove; 13. Second guide groove; 14. Long hole;

21. Limiting surface;

31. Dovetail protrusion; 32. Guide column; 33. Rack;

41. Positioning groove; 411. Groove wall; 42. Second via hole; 43. Dovetail groove; 44. Through hole;

51. Compression frame; 511. First guide protrusion; 512. Slotted hole; 513. Round hole; 514. First connection hole; 515. Butt slot; 516. Butt protrusion; 517. Fourth tight Firmware; 52, push block; 521, second guide chute; 522, first through hole; 53, clamping slider; 531, first positioning edge; 532, installation groove; 533, first guide chute ; 54, the first elastic member; 55, the second elastic member; 56, the cover frame; 561, the second connection hole; 57, the first frame; 58, the second frame.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this embodiment, the terms "up", "down", "right", and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operations, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.

This embodiment provides a clamp for clamping the ejector rod. The ejector rod in this embodiment includes but not limited to a circular ejector rod and a square ejector rod. The specific content of this embodiment will be described in detail below in conjunction with FIGS. 1 to 14 describe.

In this embodiment, as shown in FIG. 1 and FIG. 3 , the X direction is the first direction; the Y direction is the second direction; and the Z direction is the third direction as an example. Wherein, the first direction, the second direction and the third direction are perpendicular to each other.

In this implementation, the fixture includes a jig base 1 , a base 2 , a movable reference platform 3 , a positioning platform 4 , and a clamping assembly 5 . Wherein, the opposite ends of the fixture base 1 are provided with a base 2 and a movable reference platform 3, the movable reference platform 3 can move relative to the fixture base 1 along the first direction, so as to approach or move away from the base 2, and the base 2 faces the movable reference platform One side of 3 is provided with limiting surface 21. Wherein, the limiting surface 21 is used for contacting with one end of the ejector rod 9 to be processed, so that the reference surfaces of a plurality of ejector rods are all limiting surfaces, so that the height of the ejector rods prepared in the same batch can be precisely controlled. Exemplarily, the limiting surface 21 is a plane, and one ends of the plurality of push rods 9 to be processed are all in contact with the limiting surface 21 . The positioning platform 4 is installed on the movable reference platform 3 (for the specific installation method, please refer to the following related introduction, which will not be repeated here), and the positioning platform 4 is provided with several positioning grooves 41 at intervals along the second direction. In this embodiment, the positioning groove 41 may be a rectangular positioning groove, and opposite sides of the rectangular positioning groove are groove walls 411 . The clamping assembly 5 includes a clamping frame 51, a push block 52 and a clamping slide 53, the clamping slide 53 is arranged in the clamping frame 51 and can move along the second direction, and the clamping slide 53 faces the position of the positioning table 4 One side is provided with a plurality of first positioning edges 531 at intervals along the second direction, and the push block 52 is connected to the positioning table 4 through the first fastener 7 so that the first positioning edges 531 and the groove wall of the positioning groove 41 form an accommodation area , the first fastener 7 is used to adjust the distance between the first positioning edge 531 and the groove wall 411 of the positioning groove 41 .

In short, in the jig provided by the present invention, a base 2 and a movable reference platform 3 are provided at opposite ends of the fixture base 1, and the movable reference platform 3 can slide relative to the fixture base 1 along the first direction for adjusting the activity. The distance between the reference platform 3 and the base 2 meets the height required by the push rod 9; the positioning platform 4 on the movable reference platform 3 is provided with a positioning groove 41, and the plurality of first positioning edges 531 on the clamping slider 53 and the multiple Multiple accommodating areas are formed between the groove walls 411 of the two positioning grooves 41, the head ends of the push rods 9 abut against the limiting surface 21 of the base 2, the tail ends of the push rods 9 pass through the accommodating areas, and the push rods 9 are opposite to each other. The two sides of the push rod 9 are clamped between the first positioning edge 531 and the groove wall 411 of the positioning groove 41, and the other two opposite sides of the push rod 9 are clamped between the pressing frame 51 and the groove bottom of the positioning groove 41. between, realize the omnidirectional clamping of the ejector rod 9, and ensure the stability of the clamping; screw the first fastener 7 into the fixture seat 1, and the push block 52 can push the first positioning edge of the clamping slider 53 531 is close to the groove wall 411 of the positioning groove 41, and the ejector rods 9 with different cross-sectional areas are clamped by increasing or reducing the accommodation area; the pressing frame 51 can be pressed onto the positioning table 4 by a single first fastener 7, The number of screws used is reduced, and multiple ejector pins 9 can be clamped at one time, which can be applied to the processing of ejector pins 9 with different cross-sectional areas, expands the scope of application of the fixture, and is conducive to the mass production of ejector pins 9; the positioning table 4 and the clamping assembly can be replaced, which is convenient for maintenance, avoids the scrapping of the entire fixture due to the failure of a single part, and reduces the cost of use.

It can be understood that the first fastener 7 is screwed into the second through hole 42 of the positioning platform 4 after passing through the first through hole 522 of the push block 52, and it is only necessary to control the first fastener 7 to be screwed into the second through hole 42, the clamping force of the first positioning edge 531 and the groove wall 411 on the push rod 9 can be adjusted. Exemplarily, the first fastener 7 may include but not limited to a screw, the first through hole 522 is a counterbore, and the second through hole 42 is provided with an internal thread.

Further, as shown in Fig. 3 and Fig. 7, there are two clamping sliders 53, and a first elastic member 54 is connected between each clamping slider 53 and the inner side wall of the pressing frame 51, and the first elastic The member 54 is used to make the two clamping sliders 53 close to each other, the pusher 52 abuts against the two clamping sliders 53, and the pusher 52 is used to push the clamping slider 53 to move toward the positioning table 4 and move along the second direction move. When the ejector rod 9 needs to be clamped, the first fastener 7 is screwed into the jig seat 1 by forward screwing to realize the clamping of the ejector rod 9. At this time, the first elastic member 54 is in a compressed state; , reversely screw the first fastener 7 to unscrew the jig seat 1, and under the reaction force of the first elastic member 54, the two clamping sliders 53 approach each other to complete the reset and realize the relaxation of the ejector rod 9.

Further, referring to Fig. 14, the push block 52 is provided with a V-shaped slope, and a V-shaped space is formed between the two clamping slide blocks 53, the push block 52 is arranged between the two clamping slide blocks 53, and the push block 52 The slope abuts against the slope of the clamping slide 53 . When screwing the first fastener 7, the clamping slider 53 can be pushed to drive the pressing frame 51 to move towards the positioning table 4, and the first positioning edge 531 and the groove wall 411 of the positioning groove 41 form an accommodation area, which can play a role Clamping of products in the receiving area (e.g. ejector pins).

Further, the two opposite inner walls of the clamping frame 51 are provided with first guide protrusions 511 extending along the second direction, and the two opposite outer walls of the clamping slider 53 are recessed with first guide chute 533 , the first guiding protrusion 511 is slidably disposed in the first guiding slot 533 . By adding the first guide protrusion 511 and the first guide chute 533 , it is ensured that the clamping slider 53 can only slide back and forth relative to the pressing frame 51 along the second direction.

In order to facilitate installation, the compression frame is composed of two parts, respectively a first frame body 57 and a second frame body 58 (see Figure 13), the first frame body 57 is a flat plate structure, and the second frame body 58 is open on one side The rectangular frame structure, the first frame body 57 is installed on the second frame body 58, and is used for closing the opening on the second frame body 58. A plurality of first connection holes 514, a plurality of slotted holes 512 and a circular hole 513 are provided on the first frame body 57, and a plurality of first connection holes 514 and a slotted hole are provided on the second frame body 58. 512 and circular hole 513. The first frame body 57 is provided with a first guide protrusion 511 on the side facing the second frame body 58, and the second frame body is also provided with a first guide protrusion 511 on the side facing the first frame body 57. A guide protrusion 511 faces up and down, and is used to guide the clamping slider 53 to move in the second direction. Specifically, the first guide protrusion 511 is slidably disposed on two opposite outer walls of the clamping slider 53. Inside the first guide slot 533 . The side of the first frame body 57 facing the second frame body 58 is provided with a docking groove 515, and the side of the second frame body 58 facing the first frame body 57 is provided with a docking protrusion 516, and the docking protrusion 516 is inserted into the docking groove In 515 , the first frame body 57 is mounted on the second frame body 58 by using the fourth fastener 517 , please refer to FIG. 12 and FIG. 13 .

Further, the jig also includes several indenters 6, and the indenters 6 include a connected segment 61 and a cylindrical segment 62 (please refer to FIG. 9 ). The pressing head 6 is arranged on the side of the pressing frame 51 facing the positioning table 4 and can be extended or retracted relative to the pressing frame 51 , and at least one pressing head 6 is correspondingly provided in each containing area. A retractable indenter 6 is arranged on the compression frame 51. During the process of screwing the first fastener 7, the compression frame 51 approaches the positioning platform 4 along the third direction, so that the indenter 6 is pressed to the top of the accommodating area. Rod 9 further compresses the push rod 9 to ensure the stability of the clamping of the push rod 9. In this embodiment, a pressure head 6 is provided above and below each containing area (please refer to FIG. 3 ).

Further, the clamping assembly 5 also includes a second elastic member 55 and a cover frame 56 , the compression frame 51 is provided with a connected slot 512 and a circular hole 513 , and the cover frame 56 is installed on the compression frame 51 and block the circular hole 513, a field 61 of the indenter 6 is inserted in the indented hole 512, a cylindrical section 62 of the indenter 6 is inserted in the circular hole 513, and the second elastic member 55 is pressed in the indenter between the cylindrical section 62 of the head 6 and the cover frame 56 . Because a field 61 of the pressing head 6 matches the slot 512, the pressing head 6 can only move in the third direction relative to the pressing frame 51, so that the pressing head 6 is prevented from rotating relative to the pressing frame 51. The reaction force of the second elastic member 55 is used to increase the clamping force of the pressure head 6 on the ejector rod 9 to ensure that the clamp is firmly clamped on the ejector rod 9 . In this embodiment, the second elastic member 55 may include but not limited to a spring.

Further, the end of the push block 52 opposite to the positioning table 4 passes through the cover frame 56, and the push block 52 is slidably connected to the inner side wall of the cover frame 56 along the third direction, so that the push block 52 can only be opposite to the cover frame 56 Slide along the third direction, and then realize the clamping or loosening of the push rod 9. Specifically, the inner wall of the cover frame 56 is protruded with a second guide protrusion extending along the third direction, and the outer wall of the push block 52 is concavely provided with a second guide chute 521 , and the second guide protrusion is slidably disposed. in the second guide chute 521 .

Further, one side of the positioning platform 4 facing the movable reference platform 3 is concavely provided with a dovetail groove 43 extending along the second direction, and the movable reference platform 3 is convexly provided with a dovetail protrusion 31 facing one side of the positioning platform 4, and the dovetail protrusion The part 31 is arranged in the dovetail groove 43 , and the second fastener is connected with the movable reference platform 3 through the through hole 44 . By adding the dovetail protrusion 31 and the dovetail groove 43, the position changes of the positioning platform 4 and the movable reference platform 3 are limited, and the second fastener passes through the through hole 44 and is screwed with the movable reference platform 3 to further ensure the positioning platform 4 and the movable reference platform 3. The stability of the connection of the movable reference platform 3.

In other embodiments, the positioning platform 4 and the movable reference platform 3 may also be an integrated structure, and the positioning groove 41 and the second via hole 42 are directly processed on the movable reference platform 3, which is not limited in this application.

Furthermore, the compression frame 51 is provided with a plurality of first connection holes 514, and the cover frame 56 is provided with a plurality of second connection holes 561, and the third fastener 8 passes through the first connection holes 514 and the second connection holes. The connecting hole 561 is connected (for example, threaded). In this embodiment, the third fastener 8 may include but not limited to a screw.

Further, the movable reference table 3 is provided with a guide post 32 extending along the first direction, the jig base 1 is provided with a guide hole 11 , and the guide post 32 is slidably disposed in the guide hole 11 relative to one end of the movable reference table 3 . By adding the guide post 32 and the guide hole 11, since the guide post 32 extends along the first direction, it is used to guide the movable reference table 3 to slide along the first direction relative to the jig base 1 to adjust the height of the movable reference table 3 itself.

Exemplarily, there are two guide posts 32 on the movable reference table 3 , and two guide holes 11 are correspondingly provided on the jig base 1 , and the two guide posts 32 are provided in one-to-one correspondence with the two guide holes 11 . By increasing the number of guide columns 32 and guide holes 11, when the height is adjusted along the first direction, the movable reference table 3 can slide smoothly relative to the jig base 1, so that the overall force of the movable reference table 3 can be balanced while moving without deviation.

Further, the movable reference table 3 is provided with a rack 33 extending along the first direction, the jig base 1 is concavely provided with a first guide groove 12, and the end of the rack 33 opposite to the movable reference table 3 slides in the first guide groove 12 , a locking assembly 10 is provided on the jig base 1 , and the locking assembly 10 can engage with the rack 33 to limit the distance between the movable reference table 3 and the base 2 . The rack 33 extending along the first direction can reciprocate along the first guide groove 12, and when the movable reference table 3 with the rack 33 moves to a set position, the locking assembly 10 is engaged with the rack 33, The rack 33 cannot continue to move along the first guide groove 12, the position of the rack 33 is guaranteed to be fixed, and the machining accuracy of the ejector rod 9 is improved. It is only necessary to adjust the distance between the movable reference table 3 and the base 2 once, and the locking assembly 10 is used to limit the position. When the ejector rod 9 of the same height is processed later, it is not necessary to repeatedly adjust the height.

Further, the fixture base 1 is recessed with a second guide groove 13 extending along the third direction and communicating with the first guide groove 12, the locking assembly 10 includes a third elastic member 101 and a positioning buckle 102, the second guide groove 13 The inner slide is provided with a positioning buckle 102, and one end of the positioning buckle 102 extends out of the second guide groove 13 to engage with the rack 33, and the other end of the positioning buckle 102 and the bottom of the second guide groove 13 are provided with a second Three elastic pieces 101 , the third elastic piece 101 is used to move the positioning buckle 102 toward the rack 33 . Since the third direction is perpendicular to the first direction, the extension direction of the first guide groove 12 and the extension direction of the second guide groove 13 are perpendicular to each other, the positioning buckle 102 is provided with corresponding teeth, and the positioning buckle 102 can be positioned along the third direction. Transversely inserted between two adjacent teeth on the rack 33 to limit the movement of the rack 33 along the first direction. The third elastic member 101 may include but not limited to a spring. It can be understood that a plurality of teeth can be provided on the side of the positioning buckle 102 facing the rack 33. When the position of the rack needs to be locked, the teeth on the positioning buckle 102 and the teeth on the rack 33 should be aligned. engagement, to ensure that the clamping between the positioning buckle 102 and the rack 33 is stable.

Further, the locking assembly 10 also includes a handle 103 and a mounting plate 104, the mounting plate 104 is arranged at the notch of the second guide groove 13, the mounting plate 104 is provided with a third guide groove 1041 extending along the third direction, the handle 103 One end is connected with the positioning buckle 102 , and the other end of the handle 103 passes through the side wall of the third guiding groove 1041 and is placed outside the third guiding groove 1041 , so that the positioning buckle 102 can be moved by hand. When the height of the movable reference platform 3 needs to be readjusted, the positioning buckle 102 is disengaged from the rack 33 by turning the handle 103 , so that the rack 33 can move freely along the first guide groove 12 .

Based on the same inventive concept as above, this embodiment also provides a ejector rod preparation system, the ejector rod preparation system includes a grinder and the clamp in any of the above embodiments, the clamp is used to clamp the ejector rod 9, and the clamp clamps The ejector pin 9 is in contact with the grinder, and the grinder is used for grinding the ejector pin 9. Before grinding, use screws or bolts to pass through the elongated holes 14 of the jig base 1 to install the jig base 1 on the workbench. Adjust the distance between the movable reference table 3 and the base 2, screw the first fastener 7 into the jig seat 1, and then clamp the ejector pins 9 with different cross-sectional areas by increasing or reducing the accommodation area, and the grinding machine is aligned with the ejector pins 9 for sanding.

In a possible implementation, a target ejector pin can be processed according to the required height, and then the target ejector pin can be used as a reference, and other ejector pins installed can be ground to obtain at least two ejector pins with the required height .

In this application, "vertical" does not refer to absolute verticality, and certain engineering errors may be allowed. "At least one" means one or more, and "plurality" means two or more. In the text description of this application, the character "/" generally indicates that the contextual objects are an "or" relationship. Additionally, in this application, the word "exemplary" is used to mean serving as an example, illustration, or illustration. Any embodiment or design described herein as "example" is not to be construed as preferred or advantageous over other embodiments or designs. Or it can be understood that the use of the word example is intended to present a concept in a specific manner, and does not constitute a limitation to the application.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. Various obvious changes, readjustments, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (12)

1. A clamp, comprising:

the jig comprises a jig seat (1), wherein a base (2) and a movable reference table (3) are arranged at two opposite ends of the jig seat (1), the movable reference table (3) can move along a first direction relative to the jig seat (1), and a limiting surface (21) is arranged on one side, facing the movable reference table (3), of the base (2);

the positioning table (4) is arranged on the movable reference table (3), and a plurality of positioning grooves (41) are formed in the positioning table (4) at intervals along the second direction;

clamping assembly (5), including compressing tightly frame (51) and ejector pad (52), compressing tightly and being equipped with in frame (51) and following gliding clamp slider (53) of second direction, clamp slider (53) orientation one side along second direction interval of locating bench (4) is provided with a plurality of first location edges (531), ejector pad (52) through first fastener (7) with locating bench (4) are connected messenger first location edge (531) with cell wall (411) of constant head tank (41) form and hold the region, first fastener (7) are used for the adjustment first location edge (531) with the interval of cell wall (411) of constant head tank (41).

2. Clamp according to claim 1, characterized in that two clamping sliders (53) are provided, a first elastic member (54) is connected between each clamping slider (53) and the inner side wall of the pressing frame (51), the first elastic member (54) is used for making the two clamping sliders (53) approach each other, the pushing block (52) is abutted with the two clamping sliders (53), and the pushing block (52) is used for pushing the clamping sliders (53) to move towards the positioning table (4) and move along the second direction.

3. The clamp according to claim 2, characterized in that the inner wall of the pressing frame (51) is provided with a first guiding protrusion (511) extending along the second direction, the clamping slider (53) is provided with a first guiding chute (533), and the first guiding protrusion (511) is slidably arranged in the first guiding chute (533).

4. The clamp according to claim 1, characterized in that it further comprises a plurality of pressure heads (6), said pressure heads (6) being arranged on the side of the pressing frame (51) facing the positioning table (4) and being capable of being extended or retracted with respect to the pressing frame (51), at least one pressure head (6) being provided for each accommodation area.

5. The fixture as claimed in claim 4, wherein the clamping assembly (5) further comprises a second elastic member (55) and a cover plate frame (56), a straight hole (512) and a circular hole (513) which are communicated are formed in the pressing frame (51), the cover plate frame (56) is mounted on the pressing frame (51) and seals the circular hole (513), a field (61) of the pressing head (6) is arranged in the straight hole (512) in a penetrating manner, a cylindrical section (62) of the pressing head (6) is arranged in the circular hole (513) in a penetrating manner, and the second elastic member (55) is arranged between the cylindrical section (62) and the cover plate frame (56) in a pressing manner.

6. The clamp according to claim 5, characterized in that the end of the push block (52) opposite to the positioning table (4) passes through the cover plate frame (56), and the push block (52) is slidably connected with the inner side wall of the cover plate frame (56) along a third direction.

7. The fixture according to claim 1, wherein a dovetail groove (43) extending along the second direction is concavely formed in a side surface of the positioning table (4) facing the movable reference table (3), a dovetail protrusion (31) is convexly formed in a side surface of the movable reference table (3) facing the positioning table (4), the dovetail protrusion (31) is arranged in the dovetail groove (43), and a second fastening member passes through a through hole (44) to be connected with the movable reference table (3).

8. The fixture according to any one of claims 1-7, wherein the movable reference table (3) is provided with a guide post (32) extending along a first direction, the fixture seat (1) is provided with a guide hole (11), and one end of the guide post (32) corresponding to the movable reference table (3) is slidably arranged in the guide hole (11).

9. The fixture according to claim 8, wherein the movable reference table (3) is provided with a rack (33) extending along a first direction, the fixture base (1) is concavely provided with a first guide groove (12), one end of the rack (33) opposite to the movable reference table (3) is slidingly arranged in the first guide groove (12), the fixture base (1) is provided with a locking assembly (10), and the locking assembly (10) is clamped with the rack (33) for limiting the interval between the movable reference table (3) and the base (2).

10. The fixture according to claim 9, wherein the fixture seat (1) is concavely provided with a second guide groove (13) extending along a third direction and communicated with the first guide groove (12), the locking assembly (10) comprises a third elastic member (101) and a positioning buckle (102), the positioning buckle (102) is slidably arranged in the second guide groove (13), one end of the positioning buckle (102) extends out of the second guide groove (13) to be clamped with the rack (33), the third elastic member (101) is arranged between the other end of the positioning buckle (102) and the groove bottom of the second guide groove (13), and the third elastic member (101) is used for enabling the positioning buckle (102) to move towards the rack (33).

11. The clamp according to claim 10, characterized in that the locking assembly (10) further comprises a handle (103) and a mounting plate (104), the mounting plate (104) is arranged at the notch of the second guide groove (13), the mounting plate (104) is provided with a third guide groove (1041) extending along a third direction, one end of the handle (103) is connected with the positioning buckle (102), and the other end of the handle (103) penetrates through the side wall of the third guide groove (1041) to be arranged outside the third guide groove (1041).

12. A carrier rod preparation system comprising a grinding machine and a clamp according to any one of claims 1-11, said clamp being adapted to clamp a carrier rod (9), said carrier rod (9) clamped by said clamp being in contact with said grinding machine, said grinding machine being adapted to grind said carrier rod (9).

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