CN213646493U

CN213646493U - Welding die for lower fork and hook claw of bicycle

Info

Publication number: CN213646493U
Application number: CN202022470882.1U
Authority: CN
Inventors: 易裕清; 马鑫恺; 杨顺武; 龚海东
Original assignee: Giant Kunshan Co ltd
Current assignee: Giant Kunshan Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-09
Anticipated expiration: 2030-10-30

Abstract

The utility model relates to a fork under bicycle and collude claw welding mould, which comprises a bracket, be equipped with on the support and collude claw fixed establishment, lower fork fixed establishment and clamping mechanism, collude claw fixed establishment including colluding the wide mould in the claw location and locate respectively and collude the first clamping piece that the wide mould both sides in the claw location, collude two that the wide mould is used for placing the frame in the claw location and collude the claw, first clamping piece is used for colluding the claw and presss from both sides the clamp tightly fixed, lower fork fixed establishment is including the pipe fitting shape piece that is used for placing the lower fork piece of frame, clamping mechanism is used for promoting the pipe fitting shape piece and makes lower fork piece and collude the claw on the claw fixed establishment and laminate each other. The mould improves the efficiency of the welding process and the welding precision, and is beneficial to promoting the process of the automatic production of the whole frame.

Description

Welding die for lower fork and hook claw of bicycle

Technical Field

The utility model relates to a welding mould, concretely relates to bicycle lower fork and collude claw welding mould.

Background

In the traditional production line of the bicycle, welding among some parts is completed in a manual or semi-automatic mode, the bicycle industry is more and more competitive, the demand is increased, and the traditional production mode can not meet the requirement in terms of efficiency and quality.

The welding of colluding claw and lower fork is the critical production step of whether whole bicycle frame is qualified, and current collude claw and lower fork welding all will collude the claw fixed then handheld lower fork top and weld on colluding the claw, because the power of hand is inhomogeneous, the condition such as rosin joint often appears, therefore not only welded inefficiency of this kind of welding mode, welding quality can't obtain guaranteeing moreover.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a fork under bicycle and collude claw welding mould, this mould can be with the fork under with collude the claw accurate fixed to satisfy robot welded required precision, improved the fork under and colluded the welding efficiency and the welding quality of claw.

The utility model discloses a solve the technical scheme that its technical problem adopted and be:

the utility model provides a fork and collude claw welding mould under bicycle, includes the support, be equipped with on the support and collude claw fixed establishment, lower fork fixed establishment and clamping mechanism, collude claw fixed establishment including colluding the wide mould in the claw location and locate respectively and collude the first clamping piece that wide mould both sides in the claw location, collude two claws that collude that wide mould is used for placing the frame in the claw location, first clamping piece is used for pressing from both sides the claw tightly fixedly with colluding, lower fork fixed establishment is including the pipe fitting contour block that is used for placing the lower fork piece of frame, clamping mechanism is used for promoting the pipe fitting contour block and makes lower fork piece and collude the claw on the claw fixed establishment and laminate each other.

Preferably, the support includes the base, the fixed workstation that is equipped with in upper end of base, one side fixed connection backup pad of workstation, collude claw fixed establishment and locate in the backup pad, lower fork fixed establishment and clamping mechanism locate on the workstation.

Preferably, collude wide mould detachably install in the claw location in the middle part of backup pad, two sets of first clamping pieces are installed respectively in the both ends of backup pad, first clamping piece is the quick clamp, colludes the claw and laminates respectively in colluding the claw location in the both ends of wide mould and press from both sides the claw tightly through adjusting the quick clamp with colluding.

Preferably, the backing plate is fixedly installed on the supporting plate between the wide die in the quick clamp and the positioning of the hook claw, a clamping column is horizontally installed in the backing plate and can horizontally slide in the backing plate, and the quick clamp is connected to the clamping column and can push the clamping column to clamp the hook claw.

Preferably, the workbench is provided with a sliding plate and two parallel guide rails, the sliding plate is slidably mounted on the guide rails, the pipe fitting profiling block is fixed on the sliding plate, and the pipe fitting profiling block is provided with a lower fork profiling groove for placing a lower fork fitting.

Preferably, the lower fork fixing mechanism further comprises a supporting rod pressing mechanism, a supporting rod profiling groove used for placing a supporting rod is further formed in the pipe fitting profiling block, the supporting rod pressing mechanism comprises a cushion column and a pressing strip, a long round hole and a mounting hole are formed in the cushion column, the cushion column is locked into the long round hole through a bolt and fixed on the sliding plate, the pressing strip is horizontally inserted into the mounting hole and can horizontally move in the mounting hole, and when the lower fork fixing mechanism is fixed, the pressing strip is pressed on the upper surface of the supporting rod.

Preferably, a strip-shaped plate is fixedly mounted on each of two sides of the sliding plate, a support block for supporting the lower fork is arranged on each strip-shaped plate, and the support blocks can be adjusted in the vertical position relative to the strip-shaped plates.

Preferably, the strip-shaped plate is provided with a slot, the lower end of the supporting block is inserted into the slot and fixed through a bolt, the supporting block is provided with a U-shaped slot matched with the lower fork, the workbench is provided with a plurality of jacks, the sliding plate is provided with oblong holes corresponding to the jacks, and the sliding plate is fixed by inserting positioning bolts into the oblong holes and the jacks respectively.

Preferably, the clamping mechanism is arranged on a workbench on the other side of the lower fork fixing mechanism and comprises a clamping plate and a second clamping piece, the clamping plate is located between the lower fork fixing mechanism and the second clamping piece, the second clamping piece is a quick clamp, and the quick clamp can push the clamping plate to be attached to the lower fork fixing mechanism and further push a lower fork piece on the lower fork fixing mechanism to be attached to a hook claw on the hook claw fixing mechanism.

Preferably, the workbench is fixedly provided with a mounting plate, the mounting plate is fixedly provided with a quick clamp and a cushion block, the cushion block is provided with a horizontally arranged chute, a sliding rod is arranged in the chute, and one end of the sliding rod is fixedly connected with a clamping plate.

The utility model has the advantages that: the utility model mainly comprises a hook claw fixing mechanism, a lower fork fixing mechanism and a clamping mechanism, wherein the hook claw fixing mechanism fixes a hook claw by utilizing a hook claw positioning inner wide die and a first clamping piece, the lower fork fixing mechanism fixes a lower fork piece and a support rod by utilizing a pipe fitting contour block and a support block, and the clamping mechanism pushes the lower fork piece and the hook claw to be mutually laminated so as to facilitate the robot welding, thereby improving the welding precision and the welding efficiency of the lower fork and the hook claw as well as the lower fork and the support rod; in order to meet the welding requirements of frames with different specifications, only the hook claw positioning inner wide die and the pipe fitting profiling block need to be replaced, and the main body of the die does not need to be replaced, so that the die can be replaced quickly, and the uninterrupted production of a machine is met; the utility model discloses a rationally design the position of equipment and mould, keep away empty robot welding point position, the weldable rate can be controlled at 70-80%, and the rate of welding can be controlled more than 90%, utilizes the utility model discloses back 15 individual worker standard lines have replaced traditional 23-25 individual worker's hand lines, and output promotes 450 supplementations 500/10 h by 400/10 h simultaneously, has both reduced the manpower and has increased output, has very much the practicality.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

in the figure: 10-bracket, 11-base, 12-workbench, 13-support plate, 14-guide rail, 20-hook claw fixing mechanism, 21-hook claw positioning inner wide die, 22-first clamping piece, 23-backing plate, 24-clamping column, 30-lower fork fixing mechanism, 31-pipe fitting profiling block, 32-sliding plate, 33-strip-shaped plate, 34-supporting block, 35-backing column, 36-pressing strip, 40-clamping mechanism, 41-clamping plate, 42-second clamping piece, 43-mounting plate, 44-backing block, 45-sliding rod, 50-frame, 51-hook claw, 52-lower fork piece, 53-five-way pipe and 54-supporting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Example (b): as shown in fig. 1 and 2, a bicycle bottom fork and hook welding mold comprises a support 10, a hook fixing mechanism 20, a bottom fork fixing mechanism 30 and a clamping mechanism 40 are arranged on the support 10, the hook fixing mechanism 20 comprises a hook positioning inner wide die 21 and first clamping pieces 22 respectively arranged on two sides of the hook positioning inner wide die 21, the hook positioning inner wide die 21 is used for placing two hook claws 51 of a frame 50, the first clamping pieces 22 are used for clamping and fixing the hook claws 51, the bottom fork fixing mechanism 30 comprises a pipe fitting contour block 31 used for placing a bottom fork piece 52 of the frame, and the clamping mechanism 40 is used for pushing the pipe fitting contour block 31 to enable the bottom fork piece 52 to be attached to the hook claws 51 on the hook fixing mechanism 20. The frame 50 comprises hook claws 51, lower fork parts 52 and five-way pipes 53, each lower fork part 52 comprises two lower fork pipes, one ends of the two lower fork pipes are fixedly connected with the five-way pipes 53, the other ends of the two lower fork pipes are used for being connected with the hook claws 51, when the lower fork pipes and the hook claws 51 are welded, the lower fork parts and the hook claws are respectively fixed by using the welding mould, the lower fork parts and the parts of the hook claws, which need to be welded, are butted, so that the robot can be accurately welded, the two hook claws 51 are respectively arranged on two sides of the hook claw positioning inner wide die 21, the first clamping parts 22 on the two sides are adjusted to clamp the hook claws 51, the lower fork parts 52 are arranged in the pipe fitting profiling block 31, the parts of the lower fork parts, which need to be welded, are aligned to the hook claws 51, the pipe fitting profiling block 31 is pushed forwards through the clamping mechanism 40 until the two lower fork pipes are respectively jointed to the two hook claws 51. The utility model discloses a satisfy the frame welding demand of different specifications, only need to change the pipe fitting contour block in the mould and collude wide mould in the claw location can, can realize quick retooling, and utilize this mould to improve welding process's efficiency and welded precision, help promoting whole frame automated production's process.

The support 10 comprises a base 11, a workbench 12 is fixedly arranged at the upper end of the base 11, a supporting plate 13 is fixedly connected to one side of the workbench 12, a hook claw fixing mechanism 20 is arranged on the supporting plate 13, and a lower fork fixing mechanism 30 and a clamping mechanism 40 are arranged on the workbench 12. The base 11 and the workbench 12 are fixedly connected through a support column, the supporting plate 13 and the workbench 12 are fixedly connected through a connecting block, the supporting plate 13 is a long strip plate, and a certain distance is reserved between the supporting plate and the workbench, as shown in fig. 1, the claw fixing mechanism 20, the lower fork fixing mechanism 30 and the clamping mechanism 40 are sequentially arranged from left to right.

Collude wide mould 21 detachably install in claw location in the middle part of backup pad 13, two sets of first clamping piece 22 are installed respectively in the both ends of backup pad 13, first clamping piece 22 is the quick clamp, and two collude claws 51 and laminate respectively in colluding the both ends of wide mould in claw location and press from both sides the claw through adjusting the quick clamp and tightly collude the claw. The quick clamp adopts the conventional quick clamp on the market, and the detailed description is not provided here, the wide mould 21 in colluding the claw location is fixed in backup pad 13 through the bolt, can change the wide mould 21 in colluding the claw location of different specifications as required, then colludes the claw with two and places in colluding the both ends of wide mould in the claw location and utilize the quick clamp to press from both sides the claw of colluding fast to this welding demand that can satisfy multiple specification frame and accomplish quick die change.

The backing plate 23 is fixedly installed on the supporting plate 13 between the quick clamp and the hook claw positioning inner wide die 21, a clamping column 24 is horizontally installed in the backing plate 23, the clamping column 24 can horizontally slide in the backing plate, and the quick clamp is connected to the clamping column and can push the clamping column 24 to clamp the hook claw 51.

The workbench 12 is provided with a sliding plate 32 and two parallel guide rails 14, the sliding plate 32 is slidably mounted on the guide rails 14, the pipe fitting profile block 31 is fixed on the sliding plate 32, and the pipe fitting profile block 31 is provided with a lower fork profile groove for placing a lower fork 52. The workbench 12 is provided with a sliding plate 32 capable of sliding along the workbench, the sliding plate is fixedly provided with a pipe fitting profile block 31, the pipe fitting profile block 31 is provided with a profile groove matched with the lower fork 52, one end of the lower fork 52 close to the five-way pipe 53 is fixedly arranged in the profile groove, and before welding, the clamping mechanism 40 is utilized to push the sliding plate 32 to slide towards the hook claw 51 until the lower fork 52 and the hook claw 51 are attached to each other.

The lower fork fixing mechanism 30 further comprises a supporting rod pressing mechanism, a supporting rod profiling groove used for placing a supporting rod 54 is further formed in the pipe fitting profiling block 31, the supporting rod pressing mechanism comprises a cushion column 35 and a pressing strip 36, a long round hole and a mounting hole are formed in the cushion column 35, the cushion column is locked into the long round hole through a bolt and fixed on the sliding plate 32, the pressing strip 36 is horizontally inserted into the mounting hole, the pressing strip can horizontally move in the mounting hole, and when the fixing is conducted, the pressing strip 36 is pressed on the upper surface of the supporting rod 54. As shown in fig. 2, the position of the pad column 35 on the sliding plate 32 in the left-right direction can be adjusted by the arranged oblong hole, one end of the pressing strip 36 is inserted into the mounting hole of the pad column, the other end extends to the supporting rod 54, and after the supporting rod 54 is placed, the pressing strip is pulled out rightwards to be pressed on the supporting rod 54, so that the stability of the supporting rod in welding is further improved; and placing the supporting rod 54 by using the supporting rod profiling groove, enabling the supporting rod and the part to be welded of the lower fork to be mutually attached, pressing the supporting rod by using the supporting rod pressing mechanism, and finally welding the part to be welded of the supporting rod and the lower fork by using a robot.

A strip-shaped plate 33 is fixedly mounted on each of two sides of the sliding plate 32, a supporting block 34 for supporting the lower fork 52 is arranged on the strip-shaped plate 33, and the supporting block 34 can adjust the upper and lower positions relative to the strip-shaped plate 33. The strip-shaped plate 33 is provided with a slot, the lower end of the supporting block 34 is inserted into the slot and fixed through a bolt, the supporting block 34 is provided with a U-shaped slot matched with the lower fork 52, the workbench 12 is provided with a plurality of jacks, the sliding plate 32 is provided with oblong holes corresponding to the jacks, and the sliding plate 32 is fixed by inserting positioning bolts into the oblong holes and the jacks respectively. In order to further improve the stability of the lower fork piece during welding, strip-shaped plates 33 are respectively arranged on sliding plates on the front side and the rear side of the pipe piece contour block 31, supporting blocks 34 are fixedly arranged on the strip-shaped plates 33, the supporting blocks 34 are arranged close to the supporting plate 13, and the lower fork tube is just arranged in a U-shaped groove on the supporting blocks; the fixing requirements of the lower forks with different specifications are met by adjusting the height of the supporting block 34, as shown in fig. 2, a plurality of jacks are arranged on the workbench, a long round hole is arranged on the sliding plate, and after the position of the sliding plate 32 is adjusted, the jacks and the long round hole are locked by utilizing a positioning bolt to fix the position of the sliding plate.

The clamping mechanism 40 is arranged on the workbench 12 on the other side of the lower fork fixing mechanism 30, the clamping mechanism 40 comprises a clamping plate 41 and a second clamping piece 42, the clamping plate 41 is located between the lower fork fixing mechanism 30 and the second clamping piece 42, the second clamping piece 42 is a quick clamp, and the quick clamp can push the clamping plate to be attached to the lower fork fixing mechanism so as to push a lower fork piece 52 on the lower fork fixing mechanism 30 to be attached to a hook 51 on the hook fixing mechanism. The worktable 12 is fixedly provided with a mounting plate 43, the mounting plate is fixedly provided with a quick clamp and a cushion block 44, the cushion block is provided with a horizontally arranged chute, a sliding rod 45 is arranged in the chute, and one end of the sliding rod 45 is fixedly connected with the clamping plate 41. The mounting panel 43 with collude claw fixed establishment 20 and be located the both sides of lower fork fixed establishment respectively, the cushion 44 is located between quick-witted clamp and slide 32, slide bar 45 is in the spout of horizontal close-fitting on cushion 44, and slide bar 45 both ends all outstanding in the cushion, and the cushion is close to one end fixed connection clamp plate 41 of slide 32, and the other end is connected in quick-operation clamp, when needing the location, adjusts quick-operation clamp, and quick-operation clamp promotes slide bar 45 forward, makes clamp plate 41 laminate in pipe fitting contour block 31, and then drives the slide and slides forward and make the lower fork 52 on the slide laminate in colluding claw fixed establishment collude claw 51.

The utility model discloses an operation process: the method comprises the following steps:

the method comprises the following steps: selecting a proper hook claw positioning inner wide die 21, fixing the hook claw positioning inner wide die 21 on the supporting plate 13, simultaneously placing a hook claw 51 to be welded on the hook claw positioning inner wide die 21 and fixing the hook claw 51 by using the first clamping piece 22;

step two: selecting a proper pipe fitting profile block 31, installing the pipe fitting profile block 31 on a sliding plate 32, placing a lower fork 52 and a support rod 54 of which a five-way pipe 53 is welded in a profile groove of the pipe fitting profile block 31, adjusting the proper height of a support block 34 to enable the support block to support the lower fork 52, pressing the support rod by using a support rod pressing mechanism, and enabling the parts to be welded of the lower fork and the support rod to be mutually attached;

step three: and adjusting the second clamping piece 42, sliding the sliding plate 32 towards the direction of the hook claw 51 under the action of the second clamping piece 42 until the lower fork piece 52 is attached to the hook claw 51, respectively inserting the positioning bolts into the long round holes and the insertion holes to fix the position of the sliding plate 32, and finally welding the joint of the lower fork pipe and the hook claw and the attachment of the lower fork and the support rod by using a robot.

It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a bicycle is lower to be pitched and colludes claw welding mould which characterized in that: including support (10), be equipped with on support (10) and collude claw fixed establishment (20), lower fork fixed establishment (30) and clamping mechanism (40), collude claw fixed establishment (20) including colluding wide mould (21) in the claw location and locate respectively colluding first clamping piece (22) of wide mould (21) both sides in the claw location, collude two claw (51) of colluding that wide mould (21) are used for placing frame (50) in the claw location, first clamping piece (22) are used for pressing from both sides the claw (51) and press from both sides fixedly, lower fork fixed establishment (30) are including pipe fitting imitative piece (31) that are used for placing lower fork piece (52) of frame, clamping mechanism (40) are used for promoting pipe fitting imitative piece (31) and make lower fork piece (52) laminate each other with colluding claw (51) on colluding claw fixed establishment (20).

2. The bicycle lower fork and hook claw welding mold according to claim 1, characterized in that: the support (10) comprises a base (11), a workbench (12) is fixedly arranged at the upper end of the base (11), one side of the workbench (12) is fixedly connected with a supporting plate (13), a hook claw fixing mechanism (20) is arranged on the supporting plate (13), and a lower fork fixing mechanism (30) and a clamping mechanism (40) are arranged on the workbench (12).

3. The bicycle lower fork and hook claw welding mold according to claim 2, characterized in that: collude wide mould (21) detachably install in the claw location in the middle part of backup pad (13), two sets of first clamping piece (22) are installed respectively in the both ends of backup pad (13), first clamping piece (22) are for pressing from both sides fast, and two collude claw (51) and laminate respectively in colluding the both ends of wide mould in the claw location and press from both sides through adjusting fast and collude the claw and press from both sides tightly.

4. The bicycle lower fork and hook claw welding mold according to claim 3, wherein: fixed mounting backing plate (23) on backup pad (13) between wide mould (21) in the quick clamp and collude claw location, the backing plate (23) interior level installation one presss from both sides tight post (24) and this presss from both sides tight post (24) and can horizontal slip in the backing plate, quick clamp is connected in this presss from both sides tight post and can promote this clamp tight post (24) and will collude claw (51) and press from both sides tightly.

5. The bicycle lower fork and hook claw welding mold according to claim 2, characterized in that: the novel pipe fitting forming device is characterized in that a sliding plate (32) and two parallel guide rails (14) are arranged on the workbench (12), the sliding plate (32) is slidably mounted on the guide rails (14), the pipe fitting forming block (31) is fixed on the sliding plate (32), and a lower fork forming groove for placing a lower fork piece (52) is formed in the pipe fitting forming block (31).

6. The bicycle lower fork and hook claw welding mold according to claim 5, wherein: lower fork fixed establishment (30) still includes branch hold-down mechanism, still be equipped with the branch profile groove that is used for placing branch (54) on pipe fitting profile block (31), branch hold-down mechanism includes pedestal (35) and compresses tightly strip (36), be equipped with slotted hole and mounting hole on pedestal (35), this pedestal is fixed in on slide (32) through the bolt lock in this slotted hole, compress tightly strip (36) and insert horizontally in the mounting hole and should compress tightly the strip and can be in mounting hole horizontal migration, when fixed, compress tightly strip (36) pressfitting in branch (54) upper surface.

7. The bicycle lower fork and hook claw welding mold according to claim 5, wherein: the two sides of the sliding plate (32) are respectively and fixedly provided with a strip-shaped plate (33), a supporting block (34) used for supporting the lower fork piece (52) is arranged on the strip-shaped plate (33), and the supporting block (34) can be used for adjusting the upper position and the lower position relative to the strip-shaped plate (33).

8. The bicycle lower fork and hook claw welding mold according to claim 7, wherein: the sliding plate fixing device is characterized in that a slot is formed in the strip-shaped plate (33), the lower end of the supporting block (34) is inserted into the slot and fixed through a bolt, a U-shaped groove matched with the lower fork piece (52) is formed in the supporting block (34), a plurality of inserting holes are formed in the workbench (12), long round holes corresponding to the inserting holes are formed in the sliding plate (32), and the sliding plate (32) is fixed through the fact that positioning bolts are respectively inserted into the long round holes and the inserting holes.

9. The bicycle lower fork and hook claw welding mold according to claim 2, characterized in that: clamping mechanism (40) are located down and are pitched on workstation (12) of fixed establishment (30) opposite side, clamping mechanism (40) are including clamp plate (41) and second clamping piece (42), clamp plate (41) are located down and are pitched between fixed establishment (30) and second clamping piece (42), second clamping piece (42) are the quick clamp, the quick clamp can promote the clamp plate laminates in lower fork fixed establishment and then promotes lower fork piece (52) on lower fork fixed establishment (30) and laminates in colluding claw (51) on colluding claw fixed establishment.

10. The bicycle lower fork and hook claw welding mold according to claim 9, wherein: the workbench (12) is fixedly provided with a mounting plate (43), the mounting plate is fixedly provided with a quick clamp and a cushion block (44), the cushion block is provided with a horizontally arranged sliding groove, a sliding rod (45) is arranged in the sliding groove, and one end of the sliding rod (45) is fixedly connected with a clamping plate (41).