CN114076151A

CN114076151A - Clamping slide block for linear slide rail

Info

Publication number: CN114076151A
Application number: CN202010816865.0A
Authority: CN
Inventors: 马德拉; 林烨伟; 陈贤佑
Original assignee: Hiwin Technologies Corp
Current assignee: Hiwin Technologies Corp
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2022-02-22
Anticipated expiration: 2040-08-14
Also published as: CN114076151B

Abstract

The invention relates to a clamping slide block for a linear slide rail, which comprises a slide block body, wherein two piston units are respectively arranged in the slide block body, and the two piston units respectively abut against an elastic piece and can be respectively pushed by a fluid pressure cylinder in a direction opposite to the restoring force of the elastic piece. In addition, a moving part is arranged in each piston unit, the moving part can be pushed by the inclined surface of one side cover to further push one braking part, so that the left braking part and the right braking part can generate clamping force on the track, the side cover can change different assembly modes according to different use requirements, and the inclined surfaces are opposite in inclined directions, so that the effects of simplifying the structure and reducing the manufacturing cost can be achieved.

Description

Clamping slide block for linear slide rail

Technical Field

The present invention relates to linear sliding rails, and more particularly, to a clamping slider for a linear sliding rail.

Background

DE102009008815B4 discloses a technology that applies a force to a sliding wedge by a spring, so that the sliding wedge pushes the balls on both sides through its own inclined surface to generate a clamping force, thus clamping the slider on the slide rail. If the clamping force is to be unloaded, gas pressure is applied to the piston, so that the spring is pushed by the piston to be compressed, and the effect of unloading and loosening can be achieved. However, the patent document has many components, so that the problems of difficult processing, inconvenient assembly, high manufacturing cost and the like are caused, and the configuration of the air path is complicated, so that more sealing elements are required to achieve the required sealing effect.

The technique disclosed in US7124861B2 is similar to the above solution, and a spring is used to apply a force to the first piston, and then the first piston drives the roller to push against the inclined surface of the brake pad, so that the brake pad further pushes the brake pad to generate a clamping force, thereby clamping the slide block on the slide rail. If the clamping force is to be unloaded, gas pressure is applied to the second piston to enable the second piston to push the first piston, then the first piston pushes the spring, and the spring is pushed by the first piston to be compressed, so that the effect of unloading and loosening can be achieved. However, this patent document also has problems of difficulty in processing, inconvenience in assembly, high manufacturing cost, etc. due to a large number of components, and in terms of gas passage arrangement, since there is a space limitation, only two pistons can be inserted, resulting in poor clamping force.

The technique disclosed in US6578677B2 uses a disc spring to apply a force to the brake element, so that the brake element contacts the surface of the slide rail with its rough surface, thus allowing the slide block to generate a clamping force to clamp the slide rail. When the clamping force is to be unloaded, gas or liquid pressure is applied to the pistons at the two sides of the brake piece, the two pistons push the brake piece in a face-to-face mode, and the disc spring is pushed by the brake piece to be compressed, so that the effect of unloading and loosening can be achieved. However, the small space for accommodating the disc spring in this patent document results in insufficient clamping force of the brake member under the action of the disc spring, and the two pistons push the brake member in a face-to-face manner, which may cause the brake member to twist and affect the clamping force if the application of force is not uniform.

Disclosure of Invention

The present invention is directed to a clamping slider for a linear guideway, which can simplify the structure and reduce the manufacturing cost, and can generate a good clamping force.

In order to achieve the above objective, the clamping slider of the present invention comprises a slider body, two piston units, two elastic members, two fluid pressure cylinders, and two braking units. The slider body is provided with two left and right opposite side parts and a top part, the top part is connected with the side parts, a sliding groove used for being assembled on a track is formed between the top part and the side parts, and a side hole is formed in the side surface of each side part, which is back to the sliding groove; the piston units are respectively movably arranged on each side part of the sliding block body and are provided with a transverse hole; each elastic piece is arranged in the side part of the sliding block body and is propped against the piston unit; each fluid pressure cylinder is arranged on one end face of the side part of the sliding block body and used for providing fluid pressure to push the piston units in the direction opposite to the restoring force of the elastic pieces; each brake unit has a braking piece, a moving member and a side cover, wherein: each braking part is arranged at one side part of the sliding block body towards one side surface of the sliding chute, each moving part is movably arranged in a transverse hole of the body part of the first piston, each side cover is arranged at a side hole of the side part of the sliding block body, each side cover is provided with an inclined surface and pushes the moving part by the inclined surface, so that the moving parts further push the braking parts, the braking parts are tightly pressed on the track, in addition, when the side covers are assembled at the side holes in a first state, the distance between the inclined surfaces of the side covers and the moving parts is gradually reduced along the direction that the fluid pushes the piston units, the track is clamped when the fluid pressure is achieved, the effect of releasing the track when the fluid pressure is absent is achieved, otherwise, when the side covers are assembled at the side holes in a second state, the distance between the inclined surfaces of the side covers and the moving parts is gradually increased along the direction that the fluid pressure cylinders push the piston units, thus, the rail is released when the fluid pressure exists, and the rail is clamped when the fluid pressure does not exist.

Therefore, the clamping slide block of the invention changes the assembly mode of the side covers to lead the inclined planes of the side covers to present different inclined directions, so as to meet different use requirements, thus reducing the number of accessories to simplify the structure and achieving the effect of reducing the manufacturing cost.

Optionally, each side part of the slider body is provided with a first chamber, a second chamber and a partition wall for separating the first chamber from the second chamber, and each side hole is communicated with the first chamber; each piston unit comprises a first piston and a second piston, each first piston is movably arranged in a first cavity of the sliding block body, each first piston is provided with a head part, a body part connected with the head part and a rod part connected with the body part, the body part is provided with the transverse hole, the rod part penetrates through the partition wall and is partially positioned in a second cavity of the sliding block body, and the second pistons are arranged in the second cavity of the sliding block body and are respectively and fixedly connected to the rod parts of the first pistons, so that the second pistons can synchronously act with the first pistons. In addition, the elastic members respectively abut against the second piston, and the fluid pressure cylinders respectively abut against the first piston.

Optionally, each of the moving members has a retaining socket and two rolling bodies, two ends of the retaining socket respectively have a retaining groove, and each of the rolling bodies is disposed in the retaining groove and partially protrudes from an end surface of the retaining socket. Therefore, when the rolling body of each moving part is pushed by the inclined surface of the side cover, each moving part pushes the braking piece by the other rolling body.

Optionally, each of the brake members has a metal bracket, a support block and a brake pad. The metal bracket is fixedly arranged on the bottom surface of the top of the sliding block body, the supporting block is provided with a pushed part for pushing the moving element, the supporting block is arranged on the metal bracket and clamped in an embedded groove of the side part of the sliding block body by the pushed part, and the brake pad is arranged on one side surface of the supporting block facing the sliding groove. Through the technical characteristics, on one hand, the brake block is convenient to replace, and on the other hand, the height position of the supporting block can be adjusted according to the tracks with different specifications.

Optionally, a side surface of each second piston facing the partition wall is provided with a containing groove, a silencing material is arranged in the containing groove, and abnormal sound generated when the second piston impacts the partition wall is eliminated through the silencing material.

Optionally, each side of the slider body has an end opening communicating with the second chamber, the end opening being provided with a spring cap, the spring cap receiving one end of the resilient member.

Optionally, the peripheral wall of the end opening has a ring groove and a notch axially communicating with the ring groove, the outer periphery of the spring cover has a flange, and after the flange of the spring cover is embedded in the ring groove via the notch, the spring cover is rotated to make the flange and the notch staggered with each other, so that the spring cover can be fixed to the end opening.

Optionally, each side of the slider body has a pin hole adjacent to the end opening, and the flange of the spring cover has a positioning recess, and a positioning pin is inserted into the pin hole and clamped in the positioning recess to prevent the spring cover from being accidentally unscrewed.

Optionally, the invention further provides a jig for replacing the elastic member, the jig comprises a bearing plate, a screw rod and a nut, when in use, the bearing plate is locked on the outer end face of the spring cover, the screw rod penetrates through a central hole of the bearing plate and a shaft hole of the spring cover, the screw rod is clamped at the tail end of the rod part of the first piston, and finally the nut is screwed on the screw rod and is abutted against the bearing plate, so that the bearing plate is abutted against the spring cover, the spring cover can be opened at the moment, the spring cover can be ejected outwards under the action force released by the elastic member when being opened, and the bearing plate and the nut are matched to bear the action force applied to the spring cover together, so that surrounding personnel can be prevented from being damaged by the ejected spring cover, and the use safety is improved.

Optionally, each hydraulic cylinder has a cylinder body, a third piston and a piston rod. Each cylinder body is arranged on one end face of the side portion of the sliding block body, each third piston is movably arranged in the cylinder body and divides the inner portion of the cylinder body into a third cavity and a fourth cavity, one end of each piston rod is connected with the third piston, and the other end of each piston rod penetrates into the first cavity of the sliding block body and abuts against the head portion of the first piston. Through the technical characteristics, when the third piston is pushed by fluid pressure, the head of the first piston is pushed by the piston rod, so that the first piston moves towards the direction of the partition wall.

The present invention provides a clamping slide for a linear slide rail, the details of which are set forth in the following detailed description of the preferred embodiments. However, those skilled in the art should understand that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Drawings

FIG. 1 is a perspective view of a clamping slider set of the present invention installed on a rail;

FIG. 2 is a partial exploded perspective view of the clamping slide of the present invention;

FIG. 3 is a perspective view of the clamping slide of the present invention from another perspective;

FIG. 4 is a partial exploded perspective view of FIG. 3;

FIG. 5 is an end view of the clamping slide of the present invention;

FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 5;

FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 1, showing primarily the side cover assembled in a first state and the brake pads releasing the rails;

FIG. 8 is a view similar to FIG. 7, but showing the side cover assembled in a first state with the brake pads urging the rails;

FIG. 9 is a view similar to FIG. 8, but showing the side cover assembled in a second state with the brake pads urging the rails;

FIG. 10 is a view similar to FIG. 9, but showing the side cover assembled in a second position with the brake pads released from the tracks;

FIG. 11 is a perspective view of the clamping slider of the present invention used with a fixture, wherein the fixture is not assembled to the spring cover;

FIG. 12 is similar to FIG. 11, and mainly shows the fixture assembled to the spring cover;

fig. 13 is a cross-sectional view of the clamping slider of the present invention used with a jig, mainly showing a state where the spring cover is removed.

Reference numerals:

10: clamping a sliding block; 12: a track; 20: a slider body; 21: a top portion; 22: a side portion; 23: a chute; 24: a first chamber; 25: a second chamber; 26: a partition wall; 27: caulking grooves; 28: a side hole; 282: a snap ring groove; 29: the end part is open; 292: a ring groove; 294: a notch; 30: a pin hole; 31: an air inlet; 32: a first air passage; 33: a second air passage; 39: a piston unit; 40: a first piston; 41: a head portion; 42: a body part; 422: a transverse bore; 43: a rod portion; 44: a second piston; 45: an elastic member; 46: a spring cover; 462: a flange; 464: a positioning recess; 466: a shaft hole; 468: a second vent hole; 47: positioning pins; 48: a plug member; 49: a sound deadening material; 50: a fluid pressure cylinder; 51: a cylinder body; 512: a third vent hole; 52: a third piston; 53: a piston rod; 532: a third air passage; 54: a third chamber; 55: a fourth chamber; 60: a brake unit; 70: a stopper; 71: a metal bracket; 72: a top plate; 73: a vertical plate; 732: grooving; 74: a fin; 75: a screw; 76: a support block; 762: a pushed part; 77: a screw; 78: a brake pad; 80: a moving member; 81: a holder; 82: a holding groove; 83: a rolling body; 84: a rolling body; 85: a side cover; 852: a first exhaust port; 86: a bevel; 87: a retaining ring; s1: a first state; s2: a second state; 90: a jig; 91: a carrier plate; 912: a central bore; 92: a screw; 93: a nut; 94: and (4) screws.

Detailed Description

Applicants first describe herein, throughout the specification and claims that follow, the description and claims, directional terms, and phrases, refer to those directions and directions in the drawings. Next, in the embodiments and the drawings to be described below, the same element numbers denote the same or similar elements or structural features thereof.

Referring to fig. 1, 2, 6 and 7, the clamping slider 10 of the present invention includes a slider body 20, two piston units 39, two elastic members 45, two hydraulic cylinders 50, and two braking units 60.

The slider body 20 has a top portion 21 and two left and right opposite side portions 22, the top portion connects the side portions 22 and forms a sliding slot 23 with the side portions 22 for assembling on the rail 12. As shown in fig. 6, each side portion 22 has a first chamber 24, a second chamber 25, and a partition wall 26 separating the first chamber 24 from the second chamber 25 therein; next, as shown in fig. 2 and 4, the inner side surface (i.e., the side surface facing the sliding groove 23) of each side portion 22 has a caulking groove 27 communicating with the first chamber 24, the outer side surface (i.e., the side surface facing away from the sliding groove 23) of each side portion 22 has a side hole 28 communicating with the second chamber 25, the hole wall of the side hole 28 has a snap ring groove 282, the front end surface of each side portion 22 has an end opening 29 communicating with the second chamber 25 and a pin hole 30 adjacent to the end opening 29, and the peripheral wall of the end opening 29 has a ring groove 292 and three notches 294 axially communicating with the ring groove 292. In addition, as shown in fig. 2 and fig. 6, each side portion 22 has an air inlet hole 31, three first air passages 32 (for convenience of subsequent description, only one air passage is shown in fig. 6), and a second air passage 33, two ends of the three first air passages 32 are respectively communicated with the air inlet hole 31 and the first chamber 24, and two ends of the second air passage 33 are respectively communicated with one of the first air passages 32 and the second chamber 25.

Each piston unit 39 has a first piston 40 and a second piston 44. The first piston 40 is disposed in the first chamber 24 of one side 22 of the slider body 20, as shown in fig. 2 and 8, the first piston 40 has a head 41, a body 42 connected to the head 41, and a rod 43 connected to the body 42, wherein the body 42 has a transverse hole 422, and the rod 43 passes through the partition wall 26 and has a portion located in the second chamber 25; the second piston 44 is disposed in the second chamber 25 of the one side portion 22 of the slider body 20 and is fixed to the rod portion 43 of the one first piston 40 so that the two can be actuated in synchronization.

An elastic member 45 (here, a compression spring) is provided in the second chamber 25 of one side portion 22 of the slider body 20 and fitted over the end of the rod portion 43 of one of the first pistons 40. One end of the elastic member 45 abuts against the second piston 44, and the other end of the elastic member 45 abuts against a spring cover 46. As shown in fig. 2 and 5, the spring cover 46 has three flanges 462 on the outer periphery thereof, and the three flanges 462 of the spring cover 46 are fitted into the annular groove 292 through the three notches 294 in a one-to-one manner, and then rotated so that the three flanges 462 and the three notches 294 are offset from each other, thereby fixing the spring cover 46 to the end opening 29. To further ensure that the spring cover 46 is not accidentally unscrewed, each flange 462 of the spring cover 46 further has a positioning recess 464, and a positioning pin 47 is inserted into the pin hole 30 and is clamped in the positioning recess 464 to provide a positioning effect for the spring cover 46. In addition, the spring cover 46 has a shaft hole 466 at the center thereof, the shaft hole 466 is blocked by a stopper 48, and the spring cover 46 is provided with a second exhaust hole 468 communicating with the second chamber 25 above and below the shaft hole 466, respectively.

The fluid pressure cylinder 50 has a cylinder body 51, a third piston 52, and a piston rod 53. As shown in fig. 6, a cylinder 51 is locked at the rear end surface of one side portion 22 of the slider body 20, a third piston 52 is arranged in the cylinder 51 and divides the interior of the cylinder 51 into a third chamber 54 and a fourth chamber 55, one end of a piston rod 53 is connected to the third piston 52, and the other end of the piston rod 53 protrudes out of the cylinder 51 and penetrates into one first chamber 24 of the slider body 20 and abuts against the head portion 41 of the first piston 40. In addition, each piston rod 53 has a third air passage 532 running through it in the axial direction, and the two ends of the third air passage 532 communicate the first chamber 24 and the third chamber 54. The braking unit 60 has a braking member 70, a moving member 80 and a side cover 85, as shown in fig. 2, 3 and 7, wherein:

the braking member 70 has a metal bracket 71, a supporting block 76 and a plurality of braking plates 78 (here, four, but not limited to four), as shown in fig. 3 and 4, wherein: the metal bracket 71 comprises a top plate 72, a vertical plate 73 and two fins 74, wherein the top plate 72 is fixedly arranged on the bottom surface of the top 21 of the slider body 20 by two screws 75, the vertical plate 73 is integrally and vertically connected with the top plate 72 and provided with a slot 732, and the two fins 74 are integrally and vertically connected with the front side and the rear side of the vertical plate 73; the supporting block 76 is made of a soft material such as rubber, the supporting block 76 is disposed between the two fins 74 of the metal bracket 71 and fixed by two screws 77, and the height of the supporting block 76 can be adjusted according to the tracks 12 of different specifications. In addition, the outer side surface of the supporting block 76 is provided with a pushed part 762, and the supporting block 76 is clamped in the embedded groove 27 of the side part 22 of the slider body 20 by the pushed part 762; the brake pads 78 are fixed to the inner side of the support block 76 (i.e., the side facing the slide groove 23) in a parallel manner.

As shown in fig. 2 and 8, the moving member 80 is disposed in the transverse hole 422 of the body portion 42 of the first piston 40. The moving member 80 has a retainer 81 and two rolling elements 83 and 84 (rollers are used as an example, but not limited to) each having a retainer groove 82 at each end of the retainer 81, and the two rolling

elements

83 and 84 are provided in the two retainer grooves 82 and partially protrude from each end surface of the retainer 81.

As shown in fig. 2, the side cover 85 is disposed in the side hole 28 of the side portion 22 of the slider body 20 and is fixed by a snap ring 87 disposed in a snap ring groove 282 to prevent the side cover 85 from falling off. As shown in fig. 8, the side cover 85 has a slope 86, and the side cover 85 pushes one rolling element 83 of the moving element 80 by the slope 86, so that the moving element 80 pushes the pushed part 762 of the supporting block 76 by the other rolling element 84, and the brake pads 78 are pressed against the rail 12.

In addition, since the side cover 85 is detachably assembled to the side hole 28, the side cover 85 can be removed by simply removing the snap ring 87, so that the side cover 85 can be changed in the assembling direction according to different requirements, when the side cover 85 is assembled to the side hole 28 in the first state S1 shown in fig. 7 and 8, the distance between the inclined surface 86 of the side cover 85 and the moving member 80 gradually decreases along the direction in which the fluid pressure cylinder 50 pushes the piston unit 39, and when the side cover 85 is assembled to the side hole 28 in the second state S2 shown in fig. 9 and 10, the distance between the inclined surface 86 of the side cover 85 and the moving member 80 gradually increases along the direction in which the fluid pressure cylinder 50 pushes the piston unit 39.

If the side cover 85 is operated in the first state S1 as shown in fig. 7 and 8, high pressure gas is firstly injected into the inlet hole 31, as shown in fig. 6, the high pressure gas flows to the first chamber 24 through the first air passage 32, then enters the third air passage 532 from the first chamber 24, and then enters the third chamber 54 through the third air passage 532, so that the third piston 52 is pushed to push the first piston 40 through the piston rod 53, and the first piston 40 drives the moving member 80 to move together in the direction of the partition wall 26, and at this time, the excess gas in the fourth chamber 55 is pushed by the third piston 52 and discharged from the upper and lower third outlet holes 512 of the cylinder 51, and on the other hand, the high pressure gas flows to the second chamber 25 through the second air passage 33 at the same time, and then pushes the second piston 44, and at this time, the excess gas in the second chamber 25 is discharged from the upper and lower second outlet holes 468 of the spring cover 46, this simultaneously compresses the elastic member 45 to accumulate restoring force in addition to the power applied to the first piston 40.

In addition, during the moving process of the first piston 40, as shown in fig. 8, since the distance between the inclined surface 86 of the side cover 85 and the moving member 80 is gradually reduced along the direction in which the hydraulic cylinder 50 pushes the piston unit 39, one of the rolling elements 83 is pushed by the inclined surface 86, so that the moving member 80 rolls along the inclined surface 86 of the side cover 85, and during the lateral moving process of the moving member 80, the other rolling element 84 pushes the pushed portion 762 of the supporting block 76, since the supporting block 76 is fixed to two fins 74 (shown in fig. 3 and 4) of the metal bracket 71, and then the metal bracket 71 is fixed to the top 21 of the slider body 20 by the top plate 72, the two fins 74 and the vertical plate 73 are slightly deformed by the characteristics of the metal material, so that the brake pads 78 are pressed against the rail 12, thereby generating the braking effect.

When the injection of the high pressure gas is stopped, as shown in fig. 7, the restoring force released by the elastic member 45 pushes the second piston 44 to move the second piston 44 and the first piston 40 in opposite directions synchronously, then the first piston 40 pushes the third piston 52 through the piston rod 53, the excess gas in the first chamber 24 is discharged from the left and right first exhaust holes 852 of the side cover 85, and the excess gas in the third chamber 54 flows from the third air passage 532 to the first chamber 24 and is then discharged from the left and right first exhaust holes 852 of the side cover 85. In addition, during the process of the reverse movement of the first piston 40, the moving member 80 will move accordingly and make the rolling element 83 disengage from the inclined surface 86 of the side cover 85, so that the other rolling element 84 releases the thrust applied to the supporting block 76, and the supporting block 76 will drive the brake pads 78 to release the track 12 by utilizing the resilience characteristic of the vertical plate 73.

If the side cover 85 is operated in the second state S2 shown in fig. 9 and 10, since the distance between the inclined surface 86 of the side cover 85 and the moving element 80 gradually increases along the direction of the hydraulic cylinder 50 pushing against the piston unit 39, when no high-pressure gas is injected, as shown in fig. 9, the force applied by the elastic element 45 to the second piston 44 pushes the first piston 40 away from the partition wall 26, so that one of the rolling elements 83 is pushed by the inclined surface 86 of the side cover 85, and the moving element 80 pushes the pushed portion 762 of the supporting block 76 by the other rolling element 84, so that the braking elements 78 are forced to the rail 12 to generate the braking effect. However, after injecting the high pressure gas, as shown in fig. 10, the third piston 52 is pushed by the piston rod 53 to push the first piston 40, so that the first piston 40 drives the moving member 80 to move together toward the partition 26. During the movement of the first piston 40, since the distance between the inclined surface 86 of the side cover 85 and the moving member 80 gradually increases along the direction in which the hydraulic cylinder 50 pushes the piston unit 39, the pushing force of the rolling body 83 from the inclined surface 86 gradually decreases 86, so that the other rolling body 84 gradually releases the pushing force applied to the supporting block 76, and the supporting block 76 also drives the brake pads 78 to release the track 12 due to the resilient characteristic of the vertical plate 73.

As described above, when the side cover 85 is assembled in the first state S1 shown in fig. 7 and 8, the clamping force is generated after the high-pressure gas is introduced, but the clamping force is released when the high-pressure gas is stopped being injected; when the side cover 85 is assembled in the second state S2 shown in fig. 9 and 10, the clamping force is released after the high-pressure gas is introduced, but the clamping force is generated when the high-pressure gas is stopped. In addition, since the second piston 44 may collide against the partition wall 26 during the reciprocating movement to generate noise, a receiving groove 441 may be further disposed on a side surface of the second piston 44 facing the partition wall 26, and a noise-reducing material 49 made of acrylic rubber is disposed in the receiving groove 441, as shown in fig. 7 and 9, the noise-reducing material 49 is in contact with the partition wall 26 to reduce noise generated when the second piston 44 collides against the partition wall 26.

In summary, the clamping slider 10 of the present invention changes the assembling manner of the side covers 85 to make the inclined planes 86 of the side covers 85 present different inclined directions, so as to meet different requirements, thereby reducing the number of parts to simplify the structure and achieve the effect of reducing the manufacturing cost.

In addition, as shown in fig. 11 to 13, the jig 90 is provided with a bearing plate 91, a screw 92 and a nut 93, when in use, the stopper 48 is removed, the bearing plate 91 is locked on the outer end surface of the spring cover 46 by using the upper and lower screws 94, the screw 92 is then inserted through a central hole 912 of the bearing plate 91 and the shaft hole 466 of the spring cover 46 until the end of the screw 92 is clamped on the end of the rod 43 of the first piston 40, and finally the nut 93 is screwed on the screw 92 until the nut 93 is pressed against the bearing plate 91, at which time the spring cover 46 can be unscrewed. Because the spring cover 46 is popped out by the action force released by the elastic element 45 at the moment of unscrewing, if no protection mechanism is provided, the spring cover 46 popped out is easy to hurt surrounding personnel, so the invention utilizes the bearing plate 91 and the nut 93 to jointly bear the action force applied to the spring cover 46, and the spring cover 46 can be easily taken down so as to replace the elastic element 45, and meanwhile, the use safety is improved.

After the elastic member 45 is replaced, the end of the screw 92 passes through the elastic member 45 and is clamped at the end of the rod 43 of the first piston 40, the spring cover 46 is abutted against one end of the elastic member 45, the nut 93 is continuously rotated to push the nut 93 to the support plate 91, the spring cover 46 is pushed by the support plate 91 to gradually compress the elastic member 45 until the spring cover 46 can be reassembled in the end opening 29, and finally the positioning pin 47 is inserted to complete the assembly positioning of the spring cover 46.

Claims

1. A clamping slide for a linear slide, the linear slide including a rail, the clamping slide comprising:

the sliding block body is provided with two opposite side parts and a top part, the top part is connected with the side parts, a sliding groove used for being assembled on the track is formed between the top part and the side parts, and a side hole is formed in one side surface of each side part, back to the sliding groove;

two piston units movably arranged at each side part of the slide block body respectively, each piston unit is provided with a transverse hole;

two elastic pieces which are respectively arranged in the side part of the sliding block body and respectively prop against the piston unit;

two fluid pressure cylinders respectively arranged on one end face of the side part of the slider body and used for providing fluid pressure to push the piston units in a direction opposite to the restoring force of the elastic pieces; and

the two braking units are respectively provided with a braking piece, a moving piece and a side cover, each braking piece is arranged on one side surface, facing the sliding groove, of the side portion of the sliding block body, each moving piece is movably arranged in the transverse hole of the piston unit, each side cover is arranged on the side hole of the side portion of the sliding block body, each side cover is provided with an inclined surface and pushes the moving piece through the inclined surface, the moving pieces push the braking pieces, and then the braking pieces tightly press the track, when the side covers are arranged on the side holes in a first state, the distance between the inclined surfaces of the side covers and the moving pieces is gradually reduced along the direction in which the fluid pressure cylinders push the piston units, and when the side covers are arranged on the side holes in a second state, the distance between the inclined surfaces of the side covers and the moving pieces is gradually increased along the direction in which the fluid pressure cylinders push the piston units.

2. The clamping slide for a linear slide rail according to claim 1, wherein each piston unit includes a first piston and a second piston, each side portion of the slide body has a first chamber, a second chamber and a partition wall separating the first chamber from the second chamber, each side hole communicates with the first chamber, the first piston is movably disposed in the first chamber of the slide body, each first piston has a head portion, a body portion connecting the head portion and a rod portion connecting the body portion, the body portion has a transverse hole, the rod portion passes through the partition wall and has a portion located in the second chamber of the slide body, the second pistons are disposed in the second chamber of the slide body and are respectively fixedly connected to the rod portions of the first pistons, so that the second pistons can be actuated in synchronization with the first pistons, the elastic members respectively abut against the second piston, and the fluid pressure cylinders respectively abut against the first piston.

3. The clamping slide for a linear guideway as claimed in claim 1, wherein each moving member has a holder and two rolling bodies, the holder has a holding groove at both ends thereof, each rolling body is disposed in the holding groove and partially protruded from one end surface of the holder, and each moving member pushes the stopper with the other rolling body when the rolling body of each moving member is pushed by the inclined surface of the side cover.

4. The clamping slide for a linear guide according to claim 1, wherein each of the braking members has a metal bracket, a supporting block and a braking piece, the metal bracket is fixed to the bottom surface of the top of the slide body, the supporting block has a pushed portion for pushing the moving member, the supporting block is disposed on the metal bracket and is clamped in a caulking groove of the side portion of the slide body by the pushed portion, and the braking piece is disposed on a side surface of the supporting block facing the caulking groove.

5. The clamping slider for a linear guideway as claimed in claim 2, wherein a side of each second piston facing the partition wall has a receiving groove, and a noise reduction material is disposed in the receiving groove.

6. The clamping slide for a linear guideway of claim 2, wherein each side of the slide body has an end opening communicating with the second chamber, the end opening is provided with a spring cover, the spring cover receives one end of the elastic member, the peripheral wall of the end opening has an annular groove and a notch axially communicating with the annular groove, the outer periphery of the spring cover has a flange, the flange is embedded in the annular groove through the notch, and the spring cover is fixed to the end opening when the flange and the notch are offset from each other.

7. The clamping slide block for a linear guideway of claim 6, wherein each side of the slide block body has a pin hole adjacent to the end opening, a positioning pin is inserted into the pin hole, and the flange of the spring cover has a positioning recess, and the positioning recess is clamped to the positioning pin.

8. The clamping slider for a linear guideway according to claim 6, further comprising a fixture, wherein the fixture comprises a support plate, a screw and a nut, the support plate is detachably disposed on the outer end surface of the spring cover and has a central hole, the screw penetrates through the central hole of the support plate and a shaft hole of the spring cover and is clamped to the rod of the first piston by its end, and the nut is screwed to the screw and abuts against a side surface of the support plate opposite to the spring cover.

9. The clamping slide block for a linear slide rail according to claim 2, wherein each fluid pressure cylinder has a cylinder body, a third piston and a piston rod, each cylinder body is disposed on the end surface of the side portion of the slide block body, each third piston is movably disposed in the cylinder body and divides the interior of the cylinder body into a third chamber and a fourth chamber, one end of each piston rod is connected to the third piston, and the other end of each piston rod penetrates into the first chamber of the slide block body and abuts against the head of the first piston.