阅读说明：本技术 一种穿杆式网带自动张紧装置 (Automatic tensioning device of through-rod type mesh belt ) 是由 高文 夏晶 杜润生 蔡传辉 尹识谋 李金伟 于 2020-12-23 设计创作，主要内容包括：本发明提供一种穿杆式网带自动张紧装置。所述穿杆式网带自动张紧装置包括：自动张紧支撑架和电机安装支架；丝杆传动装置,所述丝杆传动装置固定连接于所述自动张紧支撑架的内表面的顶部；带座轴承,所述带座轴承固定连接于所述丝杆传动装置的一侧；转轴,所述转轴转动连接于所述带座轴承的一侧,所述转轴表面的前后两侧均固定连接有调节链轮。本发明提供的穿杆式网带自动张紧装置通过接近传感器来检测网带的拉伸状况并及时报警,底部对射感应器实时监测网带的松紧状态,并控制步进电机的启停,通过调整步进电机输出及扭力限制器控制张紧机构的拉力,有效避免因张紧力过大而带来的网带过度磨损。(The invention provides a penetrating rod type mesh belt automatic tensioning device. Wear automatic overspeed device tensioner of pole formula guipure includes: the automatic tensioning support frame and the motor mounting support frame are arranged; the screw rod transmission device is fixedly connected to the top of the inner surface of the automatic tensioning support frame; the belt seat bearing is fixedly connected to one side of the screw rod transmission device; the pivot, the pivot rotate connect in one side of rolling bearing, the equal fixedly connected with adjusting sprocket in both sides around the pivot surface. The through-rod type automatic mesh belt tensioning device provided by the invention detects the stretching condition of a mesh belt through the proximity sensor and gives an alarm in time, the bottom correlation sensor monitors the tightness state of the mesh belt in real time, the start and stop of the stepping motor are controlled, the tension of the tensioning mechanism is controlled by adjusting the output of the stepping motor and the torsion limiter, and the excessive wear of the mesh belt caused by overlarge tension is effectively avoided.)

1. The utility model provides a wear automatic overspeed device tensioner of pole formula guipure which characterized in that includes: the automatic tensioning support frame and the motor mounting support frame are arranged;

the screw rod transmission device is fixedly connected to the top of the inner surface of the automatic tensioning support frame;

the belt seat bearing is fixedly connected to one side of the screw rod transmission device;

the rotating shaft is rotatably connected to one side of the bearing with the seat, and the front side and the rear side of the surface of the rotating shaft are fixedly connected with adjusting chain wheels;

the proximity sensors are fixedly connected to the left side and the right side of the inner surface of the automatic tensioning support frame and are positioned at the top of the screw rod transmission device;

and the correlation inductor is fixedly connected to the top of one side of the automatic tensioning support frame.

2. The automatic tension device of a through-rod type mesh belt according to claim 1, wherein the screw transmission device comprises a guide shaft and a rolling ball screw, a linear bearing is slidably connected to the surface of the guide shaft, a linear bearing mounting plate is fixedly connected to one side of the outer surface of the linear bearing, and one side of the belt seat bearing is fixedly connected to the linear bearing mounting plate.

3. The through-rod type mesh belt automatic tensioning device according to claim 2, wherein the left side and the right side of the rolling ball screw are rotatably connected with the left side and the right side of the inner surface of the automatic tensioning support frame, one end of the rolling ball screw penetrates through the automatic tensioning support frame and extends to the outside of the automatic tensioning support frame, and one end of the rolling ball screw is fixedly connected with a screw support seat assembly in a rotating mode.

4. The through-rod type mesh belt automatic tensioning device according to claim 3, wherein a bottom connecting plate is connected to the surface of the rolling ball screw in a threaded manner, the top of the bottom connecting plate is fixedly connected with the bottom of the linear bearing mounting plate, and a torsion limiter is fixedly connected to one end of the rolling ball screw and located on one side of the screw support seat assembly.

5. The through-rod type mesh belt automatic tensioning device according to claim 4, wherein a stepping motor is fixedly connected to one side of the motor mounting bracket, one end of an output shaft of the stepping motor is fixedly connected with a connecting shaft through a coupler, one end of the connecting shaft is fixedly connected with a gear, a chain is meshed with the surface of the gear, and the gear is in transmission connection with the torque limiter through the chain.

6. The automatic tension device for the through-rod type mesh belt according to claim 1, wherein a clamping rod is rotatably connected to one side of the belt seat bearing, a mounting groove is formed in one end of the clamping rod, a first connecting rod is arranged at one end of the clamping rod, one end of the first connecting rod extends into the mounting groove and is fixed through a bolt, the adjusting chain wheel is slidably connected with the upper end and the lower end of the first connecting rod, clamping devices are fixedly connected to the upper side and the lower side of the adjusting chain wheel respectively, the clamping devices are sleeved on the surface of the first connecting rod, one end of each clamping device extends into the first connecting rod, and clamping grooves are formed in the upper side and the lower side of the surface of the first connecting rod respectively.

7. The automatic tension device of the threading type mesh belt according to claim 6, wherein the clamping device comprises a fixing ring, an annular groove is formed inside the fixing ring, and a first sliding groove is formed in one side of the inner surface of the annular groove.

8. The threading type mesh belt automatic tensioning device according to claim 7, wherein a threaded rod is arranged on the top of the outer surface of the fixing ring, the bottom end of the threaded rod penetrates through the fixing ring and extends into the annular groove, a clamping block is rotatably connected to the bottom end of the threaded rod, and one end of the clamping block penetrates through the fixing ring and extends into the clamping groove.

9. The automatic tension device of claim 8, wherein one side of the top of the fixture block is rotatably connected with a first fixture rod, the other side of the top of the fixture block is rotatably connected with a second fixture rod, and one end of each of the first fixture rod and the second fixture rod extends into the first chute.

10. The automatic tension device of claim 9, wherein one side of the first clamp rod is rotatably connected to a second connecting rod, one end of the second connecting rod is provided with a second sliding slot, one side of the second clamp rod is rotatably connected to a third connecting rod, and one end of the third connecting rod extends into the second sliding slot.

Technical Field

The invention relates to the field of gas mesh belt furnaces, in particular to a penetrating rod type mesh belt automatic tensioning device.

Background

The mesh belt furnace is a sintering furnace which realizes the continuous conveying of parts in the furnace by a mesh belt protected by a muffle, and is mainly used for sintering powder metallurgy products, reducing metal powder and pre-sintering, sintering or heat treatment of electronic products in protective atmosphere or air.

At present, a mesh belt tensioning method for the mesh belt furnace mainly uses a counterweight wheel structure to stretch the mesh belt, but the counterweight weight in the counterweight structure cannot be adjusted and is difficult to estimate proper weight, unreasonable counterweight can cause the mesh belt to be too tight, the abrasion of the mesh belt is accelerated, the mesh belt is in a heated and elongated state for a long time, and the mesh belt gradually exceeds the action stroke of the counterweight structure after a period of time and unnecessary loss is brought to production during the period of exceeding the action stroke of the counterweight.

Therefore, it is necessary to provide a through-rod type mesh belt automatic tensioning device to solve the above technical problems.

Disclosure of Invention

The invention provides a penetrating rod type automatic tensioning device for a mesh belt, which solves the problems that the existing mesh belt is too tight due to unreasonable balance weight and the wear of the mesh belt is accelerated.

In order to solve the technical problem, the invention provides a penetrating rod type mesh belt automatic tensioning device, which comprises: the automatic tensioning support frame and the motor mounting support frame are arranged;

the screw rod transmission device is fixedly connected to the top of the inner surface of the automatic tensioning support frame;

the belt seat bearing is fixedly connected to one side of the screw rod transmission device;

the rotating shaft is rotatably connected to one side of the bearing with the seat, and the front side and the rear side of the surface of the rotating shaft are fixedly connected with adjusting chain wheels;

the proximity sensors are fixedly connected to the left side and the right side of the inner surface of the automatic tensioning support frame and are positioned at the top of the screw rod transmission device;

and the correlation inductor is fixedly connected to the top of one side of the automatic tensioning support frame.

Detect the tensile situation of guipure and in time report to the police through proximity sensor, the elasticity state of bottom correlation inductor real-time supervision guipure, and control step motor opens and stops, through adjustment step motor output and torsion limiter control straining device's pulling force, effectively avoid the guipure excessive wear because of the too big bringing of tensioning force, both ends limit sensor detectable guipure tensile state and in time report to the police, stop the guipure and exceed the production loss that tensile limit and indirect caused, the adjustment adjusting sprocket interval, can satisfy the guipure use of different width, possess certain commonality.

Preferably, the screw rod transmission device comprises a guide shaft and a rolling ball screw, the surface of the guide shaft is connected with a linear bearing in a sliding manner, one side of the outer surface of the linear bearing is fixedly connected with a linear bearing mounting plate, and one side of the bearing with the seat is fixedly connected with the linear bearing mounting plate.

Preferably, the left side and the right side of the rolling ball screw are rotatably connected with the left side and the right side of the inner surface of the automatic tensioning support frame, one end of the rolling ball screw penetrates through the automatic tensioning support frame and extends to the outside of the automatic tensioning support frame, and one end of the rolling ball screw is fixedly connected with a screw support seat assembly in a rotating mode.

Preferably, the surface of the rolling ball screw is in threaded connection with a bottom connecting plate, the top of the bottom connecting plate is fixedly connected with the bottom of the linear bearing mounting plate, and one end of the rolling ball screw, which is located on one side of the screw support base assembly, is fixedly connected with a torque limiter.

Preferably, one side fixedly connected with step motor of motor installing support, the one end of step motor output shaft passes through shaft coupling fixedly connected with connecting axle, the one end fixedly connected with gear of connecting axle, the surface meshing of gear has the chain, the gear pass through the chain with torque limiter transmission is connected.

Preferably, one side of tape seat bearing is rotated and is connected with the kelly, the mounting groove has been seted up to the one end of kelly, the one end of kelly is provided with the head rod, the one end of head rod extends to the inside of mounting groove just passes through the bolt fastening, adjusting sprocket with the upper and lower both ends sliding connection of head rod, the equal fixedly connected with latch device in both sides about adjusting sprocket, latch device cup joint in the surface of head rod, latch device's one end extends to the inside of head rod, the draw-in groove has all been seted up to the upper and lower both sides on head rod surface.

Through the both sides welding latch device at adjusting sprocket, set up the draw-in groove on head rod surface, make things convenient for the staff only to rotate the threaded rod, alright extend into the draw-in groove with the one end of the fixture block in the latch device, thereby restriction adjusting sprocket's position, guarantee adjusting sprocket's stability, simultaneously when adjusting sprocket damages, liquid makes things convenient for the staff to dismantle adjusting sprocket from the head rod, and change it, guarantee that adjusting sprocket can control the guipure, avoid the guipure to be in the state of thermal extension for a long time, lead to the guipure wearing and tearing.

Preferably, the clamping device comprises a fixing ring, an annular groove is formed in the fixing ring, and a first sliding groove is formed in one side of the inner surface of the annular groove.

Preferably, the top of solid fixed ring surface is provided with the threaded rod, the bottom of threaded rod is run through solid fixed ring and extend to the inside of ring channel, the bottom of threaded rod is rotated and is connected with the fixture block, the one end of fixture block is run through gu fixed ring and extend to the inside of draw-in groove.

Preferably, one side of the top of the clamping block is rotatably connected with a first clamping rod, the other side of the top of the clamping block is rotatably connected with a second clamping rod, and one ends of the first clamping rod and the second clamping rod extend into the first sliding groove.

Preferably, one side of the first clamping rod is rotatably connected with a second connecting rod, a second sliding groove is formed in one end of the second connecting rod, one side of the second clamping rod is rotatably connected with a third connecting rod, and one end of the third connecting rod extends to the inside of the second sliding groove.

Compared with the related art, the penetrating rod type mesh belt automatic tensioning device provided by the invention has the following beneficial effects:

the invention provides a through-rod type mesh belt automatic tensioning device, which detects the stretching condition of a mesh belt and gives an alarm in time through a proximity sensor, a bottom correlation sensor monitors the tightness state of the mesh belt in real time, controls the start and stop of a stepping motor, controls the tension of a tensioning mechanism through adjusting the output of the stepping motor and a torque limiter, effectively avoids the excessive wear of the mesh belt caused by overlarge tension force, limits sensors at two ends can detect the stretching state of the mesh belt and give an alarm in time, avoids the production loss caused by the fact that the mesh belt exceeds the stretching limit indirectly, adjusts the space between adjusting chain wheels, can meet the use of mesh belts with different widths, has certain universality, can extend one end of a clamping block in the clamping device into the clamping groove through welding clamping devices at two sides of the adjusting chain wheels, is provided with the clamping groove on the surface of a first connecting rod, and is convenient for workers, thereby restriction adjusting sprocket's position guarantees adjusting sprocket's stability, and when adjusting sprocket damaged, liquid makes things convenient for the staff to dismantle adjusting sprocket from the head rod to change it, guarantee that adjusting sprocket can control the guipure, avoid the guipure to be in the state of being heated the extension for a long time, lead to the guipure wearing and tearing.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a through-bar type mesh belt automatic tensioning device provided by the invention;

FIG. 2 is a top view of the outer structure shown in FIG. 1;

FIG. 3 is a schematic structural view of a second embodiment of the automatic tension device for a through-bar type mesh belt according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1;

fig. 5 is a bottom view of the internal structure of the latch of fig. 3.

Reference numbers in the figures: 1. the automatic tensioning support frame comprises an automatic tensioning support frame, 2, a motor mounting support, 3, a screw rod transmission device, 31, a guide shaft, 32, a rolling ball screw, 33, a linear bearing, 34, a linear bearing mounting plate, 35, a screw rod support seat assembly, 36, a bottom connecting plate, 37, a torque limiter, 4, a belt seat bearing, 5, a rotating shaft, 6, an adjusting chain wheel, 7, a proximity sensor, 8, an opposite sensor, 9, a stepping motor, 10, a connecting shaft, 11, a gear, 12, a chain, 13, a clamping rod, 14, a mounting groove, 15, a first connecting rod, 16, a clamping device, 161, a fixing ring, 162, an annular groove, 163, a first sliding groove, 164, a threaded rod, 165, a clamping block, 166, a first clamping rod, 167, a second clamping rod, 168, a second connecting rod, 169, a second sliding groove, a connecting rod 1610, a third connecting rod, 17 and a clamping groove.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

First embodiment

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a first embodiment of a through-rod type mesh belt automatic tensioning device provided by the present invention; fig. 2 is a top view of the outer structure shown in fig. 1. Wear automatic overspeed device tensioner of pole formula guipure includes: the automatic tensioning support frame 1 and the motor mounting bracket 2 are arranged;

the screw rod transmission device 3 is fixedly connected to the top of the inner surface of the automatic tensioning support frame 1;

the belt seat bearing 4 is fixedly connected to one side of the screw rod transmission device 3;

the rotating shaft 5 is rotatably connected to one side of the bearing with a seat 4, and the front side and the rear side of the surface of the rotating shaft 5 are fixedly connected with adjusting chain wheels 6;

the proximity sensors 7 are fixedly connected to the left side and the right side of the inner surface of the automatic tensioning support frame 1, and the proximity sensors 7 are positioned at the top of the screw rod transmission device 3;

and the correlation inductor 8 is fixedly connected to the top of one side of the automatic tensioning support frame 1.

The automatic tensioning support frame 1 is formed by welding carbon steel sectional materials, the motor mounting support frame 2 is fixed with the automatic tensioning support frame 1 or other devices through bolts, the screw rod transmission device 3 is fixed with the automatic tensioning support frame 1 through bolts, the number of the belt seat bearings 4 is 2, the positions of the belt seat bearings are symmetrical about the center of the automatic tensioning support frame 1 and are fixed with one side of the screw rod transmission device 3 through bolts, two ends of the rotating shaft 5 extend into the belt seat bearings 4, the number of the adjusting chain wheels 6 is 2, the adjusting chain wheels are fixed on the surface of the rotating shaft 5 through bolts, the deformation and lengthening of a mesh belt are avoided through adjusting the chain wheels 6, the proximity sensor 7 is fixed on the automatic tensioning support frame 1 through screws and the like, the stretching condition of the mesh belt can be detected and an alarm is given, the correlation sensor 8 is fixed in the middle of one side of the automatic tensioning support frame 1 through screws, the rotating shaft 5 passes through the seated bearing 4.

The screw rod transmission device 3 comprises a guide shaft 31 and a rolling ball screw 32, a linear bearing 33 is connected to the surface of the guide shaft 31 in a sliding mode, a linear bearing mounting plate 34 is fixedly connected to one side of the outer surface of the linear bearing 33, and one side of the bearing with a seat 4 is fixedly connected with the linear bearing mounting plate 34.

The number of the guide shafts 31 is 2, the guide shafts are transversely arranged at the top of the automatic tensioning support frame 1, the number of the linear bearings 33 is 2, the linear bearings 33 slide on the surfaces of the guide shafts 31, the linear bearings 33 penetrate through the guide shafts 31 and are fixedly connected with the linear bearing mounting plates 34 and the bottom connecting plates 36 through screws, and the seated bearings 4 are fixedly connected with the linear bearing mounting plates 34 directly through screws.

The left side and the right side of the rolling ball screw 32 are rotatably connected with the left side and the right side of the inner surface of the automatic tensioning support frame 1, one end of the rolling ball screw 32 penetrates through the automatic tensioning support frame 1 and extends to the outside of the automatic tensioning support frame 1, and one end of the rolling ball screw 32 is fixedly connected with a screw support seat assembly 35 in a rotating mode.

The rolling ball screw 32 and the bottom connecting plate 36 are fixedly installed together through screws, and both ends of the rolling ball screw 32 and the screw supporting seat assembly 35 are located in a sensing mode.

A bottom connecting plate 36 is connected to the surface of the rolling ball screw 32 through a screw thread, the top of the bottom connecting plate 36 is fixedly connected to the bottom of the linear bearing mounting plate 34, and a torque limiter 37 is fixedly connected to one end of the rolling ball screw 32 and located on one side of the screw support seat assembly 35.

One side fixedly connected with step motor 9 of motor installing support 2, the one end of step motor 9 output shaft passes through shaft coupling fixedly connected with connecting axle 10, the one end fixedly connected with gear 11 of connecting axle 10, the surface meshing of gear 11 has chain 12, gear 11 pass through chain 12 with torque limiter 37 transmission is connected.

The torque limiter 37 and the rolling ball screw 32 are fixedly connected with each other through a flat key and a top dead center, the bottom of the stepping motor 9 is fixed with the motor mounting bracket 2 through a bolt and is connected with an external power supply through a power line, the gear 11 is welded at one end of the connecting shaft 10, and the torque limiter 37 and the gear 11 are hinged with the chain 12 to perform transmission.

The working principle of the penetrating rod type mesh belt automatic tensioning device provided by the invention is as follows:

during the use, adjusting sprocket 6 is as the idler of equipment guipure transmission structure, and the position of adaptation adjustment adjusting sprocket 6 is in order to satisfy the user demand, and when wearing the start-up of pole formula guipure automatic take-up device, step motor 9 can drive pivot 5 and take-up backward, realizes guipure tensioning function, through setting up torque limiter 37, controls the tensioning degree of guipure.

When the proximity sensor 7 detects that the mesh belt is in a stretching state, the proximity sensor 7 can give an alarm, and a worker can adjust the automatic tensioning device, so that the mesh belt is adjusted.

During adjustment, the correlation inductor 8 detects the tightness state of the mesh belt in real time, after the adjustment is completed, the stepping motor 9 can be controlled to start and stop in time, the tension of the tensioning mechanism is controlled by adjusting the output of the stepping motor 9 and the torsion limiter 37, and excessive wear of the mesh belt caused by overlarge tension is effectively avoided.

Compared with the related art, the penetrating rod type mesh belt automatic tensioning device provided by the invention has the following beneficial effects:

detect the tensile situation of guipure and in time report to the police through proximity sensor 7, the elasticity state of bottom correlation inductor 8 real-time supervision guipure, and control opening of step motor 9 and stop, through adjusting step motor 9 output and torque limiter 37 control straining device's pulling force, effectively avoid because of the too big guipure excessive wearing and tearing that bring of tensioning force, both ends limit sensor detectable guipure tensile state and in time report to the police, stop the guipure and exceed the indirect production loss that causes of tensile limit, 6 intervals of adjustment adjusting sprocket, the guipure that can satisfy different widths uses, possess certain commonality.

Second embodiment

Referring to fig. 3, 4 and 5, a second embodiment of the present application provides another integrated floor cleaning device based on the integrated floor cleaning device provided by the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference of the integral type clearance ground ware that the second embodiment of this application provided lies in, one side of tape seat bearing 4 is rotated and is connected with kelly 13, mounting groove 14 has been seted up to kelly 13's one end, kelly 13's one end is provided with head rod 15, head rod 15's one end extends to mounting groove 14's inside and through bolt fastening, adjusting sprocket 6 with head rod 15's upper and lower both ends sliding connection, the equal fixedly connected with latch 16 in upper and lower both sides of adjusting sprocket 6, latch 16 cup joint in head rod 15's surface, latch 16's one end extends to head rod 15's inside, draw-in groove 17 has all been seted up to the upper and lower both sides on head rod 15 surface.

The quantity of kelly 13 is two, install together with two tape seat bearings 4, mounting groove 14 is with the equal adaptation in both ends of head rod 15, the tip card of head rod 15 is back in mounting groove 14, alright fix through the bolt, make things convenient for the staff to dismantle head rod 15, latch device 16 is welded on adjusting sprocket 6 surface, also cup joint at head rod 15 surface, the one end card through latch device 16 is in draw-in groove 17, alright restriction adjusting sprocket 6 is in the position on head rod 15, the convenience is strained the guipure of different width, change after also conveniently tearing down the adjusting sprocket 6 after also conveniently damaging simultaneously.

The clamping device 16 includes a fixing ring 161, an annular groove 162 is formed in the fixing ring 161, and a first sliding groove 163 is formed on one side of the inner surface of the annular groove 162.

One side of the fixed ring 161 is welded with the adjusting sprocket 6, the annular groove 162 is formed inside the fixed ring 161, and the total number of the first sliding grooves 163 is 8 and is uniformly formed.

The top of fixed ring 161 surface is provided with threaded rod 164, the bottom of threaded rod 164 is run through fixed ring 161 and is extended to the inside of ring channel 162, the bottom of threaded rod 164 is rotated and is connected with fixture block 165, the one end of fixture block 165 is run through fixed ring 161 and is extended to the inside of draw-in groove 17.

Threaded rod 164 and fixed ring 161 are threaded connection, and the quantity is 1, and the bottom is connected together through bearing and a fixture block 165 in annular groove 162, and fixture block 165 is with draw-in groove 17 size adaptation, and the total number is 4, is evenly distributed.

One side of the top of the latch 165 is rotatably connected with a first latch rod 166, the other side of the top of the latch 165 is rotatably connected with a second latch rod 167, and one end of each of the first latch rod 166 and the second latch rod 167 extends into the first sliding groove 163.

First kelly 166 and second kelly 167 are symmetrical, and the size shape is the same, and the bottom all links together through round pin axle and fixture block 165, and the top is inside the first spout 163 is slided, is the size adaptation with first spout 163.

One side of the first clamping bar 166 is rotatably connected with a second connecting bar 168, one end of the second connecting bar 168 is provided with a second sliding groove 169, one side of the second clamping bar 167 is rotatably connected with a third connecting bar 1610, and one end of the third connecting bar 1610 extends to the inside of the second sliding groove 169.

The second connecting rod 168 is connected with one side of the first clamping rod 166 through a pin, the third connecting rod 1610 is connected with one side of the second clamping rod 167 through a pin, the second sliding groove 169 is matched with the third connecting rod 1610 in size, the second sliding groove 169 and the third connecting rod 1610 have certain radians, and the third connecting rod 1610 can be retracted into the second sliding groove 169.

When the adjusting chain wheel 6 is worn seriously after being used for a long time, a worker firstly controls the whole device to be closed through the control switch, then the bolt for fixing the first connecting rod 15 and the clamping rod 13 can be taken down, and then the two ends of the first connecting rod 15 can be taken out from the mounting grooves 14.

Then, the worker can rotate the threaded rod 164 to the outside of the fixing ring 161, and in the process that the threaded rod 164 moves upwards, the fixture block 165 at the bottom can be driven to move upwards, and meanwhile, the first fixture rod 166 and the second fixture rod 167 also move towards two sides along the first sliding groove 163.

During the movement of the first latch 166 and the second latch 167, the second connecting rod 168 and the third connecting rod 1610 rotate, and the third connecting rod 1610 contracts into the second sliding slot 169 to move the other first latch 166 and the other second latch 167 along the first sliding slot 163 by the displacement between the second connecting rod 168 and the third connecting rod 1610.

During the moving process of the first and second clamping rods 166 and 167, the block 165 can move out of the clamping groove 17, and after the threaded rod 164 moves up for a sufficient length, the block 165 can completely move out of the clamping groove 17, and then the worker can take the adjusting sprocket 6 and the clamping device 16 off from the first connecting rod 15 together, and then the worker can replace the adjusting sprocket 6.

When installing new adjusting sprocket 6 again, the staff only need move adjusting sprocket 6 to draw-in groove 17 department, alright rotation threaded rod 164 afterwards, makes fixture block 165 move down into in draw-in groove 17, carries out the joint through a plurality of fixture blocks 165 at different angles and head rod 15 to guarantee the stability of adjusting sprocket 6 on head rod 15.

And when the distance between two adjusting chain wheels 6 is adjusted according to the width of the mesh belt, the worker only needs to rotate the threaded rod 164 to enable the fixture block 165 to move out of the fixture groove 17 at the position, then directly moves the adjusting chain wheels 6, the adjusting chain wheels 6 can be moved to other positions, and the threaded rod 164 is rotated reversely to enable the fixture block 165 to enter the fixture groove 17 at the other position.

Through both sides welding latch device 16 at adjusting sprocket 6, draw-in groove 17 is seted up on head rod 15 surface, make things convenient for the staff only to rotate threaded rod 164, alright extend into draw-in groove 17 with the one end of fixture block 165 in latch device 16, thereby restrict adjusting sprocket 6's position, guarantee adjusting sprocket 6's stability, when adjusting sprocket 6 damages simultaneously, liquid makes things convenient for the staff to dismantle adjusting sprocket 6 from head rod 15, and change it, guarantee that adjusting sprocket 6 can control the guipure, avoid the guipure to be in the state of being heated the extension for a long time, lead to the guipure wearing and tearing.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.