阅读说明：本技术 一种魔术扣分切转移装置及方法 (Magic buckle splitting and transferring device and method ) 是由 王东 洪奕元 张志雄 于 2019-09-05 设计创作，主要内容包括：本发明提供一种魔术扣分切转移装置,包括切刀辊、刀垫辊、变速转位机构、转移辊、复合辊,切刀辊与刀垫辊平行相切布置且逆向转动,转移辊与复合辊平行相切布置且逆向转动,变速转位机构具有圆周分布且可圆周变速运动并在运动过程中转位的多个负压吸附块,负压吸附块的运动圆周分别与刀垫辊和转移辊相切布置,且负压吸附块分别与刀垫辊和转移辊逆向转动,刀垫辊与转移辊的线速度不同,负压吸附块的变速运动设置成与刀垫辊等速复合和与转移辊等速复合,使魔术扣在分切步骤置于上胶步骤后,并可对已完成上胶的魔术扣进行分切转移。本发明还提供一种魔术扣分切转移方法。(The invention provides a magic buckle dividing and transferring device which comprises a cutter roller, a shim roller, a variable speed indexing mechanism, a transferring roller and a composite roller, wherein the cutter roller and the shim roller are arranged in parallel and tangent and rotate reversely, the transferring roller and the composite roller are arranged in parallel and tangent and rotate reversely, the variable speed indexing mechanism is provided with a plurality of negative pressure adsorption blocks which are circumferentially distributed and can do variable speed motion circumferentially and index in the motion process, the motion circumferences of the negative pressure adsorption blocks are respectively arranged in tangent with the shim roller and the transferring roller, the negative pressure adsorption blocks respectively rotate reversely with the shim roller and the transferring roller, the linear speeds of the shim roller and the transferring roller are different, the variable speed motion of the negative pressure adsorption blocks is set to be compounded with the shim roller at a constant speed and compounded with the transferring roller at a constant speed, so that a magic buckle is placed after a gluing step in a dividing and can be divided and transferred to the glued magic buckle. The invention also provides a magic buckle slitting and transferring method.)

1. The utility model provides a magic is detained and is cut transfer device which characterized in that: the diaper cutting machine comprises a cutter roller, a cutter pad roller, a variable speed indexing mechanism, a transfer roller and a composite roller, wherein the cutter roller and the cutter pad roller are arranged in parallel and tangent and rotate reversely, the transfer roller and the composite roller are arranged in parallel and tangent and rotate reversely, the variable speed indexing mechanism is provided with a plurality of negative pressure adsorption blocks which are distributed circumferentially and can do circular variable speed motion and index in the motion process, the motion circumferences of the negative pressure adsorption blocks are respectively arranged in tangent with the cutter pad roller and the transfer roller, the negative pressure adsorption blocks respectively rotate reversely with the cutter pad roller and the transfer roller, the cutter pad roller and the transfer roller are negative pressure adsorption rollers, a continuously conveyed magic buckle enters from between the cutter roller and the cutter pad roller and is cut by the cutter roller, a continuously conveyed diaper passes through the transfer roller and the composite roller to be attached with the magic buckle, the linear velocities of the cutter pad roller and the transfer roller are different, the variable speed motion of the negative pressure adsorption blocks is set to be compounded with the cutter pad roller, make the magic buckle can transfer to the negative pressure from the shim roller and adsorb the piece and transfer to the roller from the negative pressure, the negative pressure adsorbs the piece and has the adsorption plane of preventing the viscose, and the area face of gluing that the magic was buckled adsorbs the adsorption plane laminating of piece with the negative pressure, and the area face of gluing that the process transfer roller made the magic buckle is towards diaper and laminating on the diaper.

2. The magic buckle splitting and transferring device of claim 1, wherein: the variable speed indexing mechanism comprises

The supporting shaft is fixedly arranged;

the circular guide rail can rotate around the axis of the circular guide rail and is coaxially arranged with the support shaft;

the guide rail motor is connected with and drives the circular guide rail to rotate;

the cylindrical cam is arranged on the supporting shaft and is provided with a track groove;

the rotary adsorption mechanisms comprise a rotary frame, a shaft sleeve and a negative pressure adsorption block, wherein the shaft sleeve is rotatably sleeved outside the support shaft, one end of the rotary frame is fixedly connected with the shaft sleeve, the other end of the rotary frame is slidably connected with the circular guide rail through a first sliding block, the negative pressure adsorption block can be rotatably arranged on the rotary frame around a pivot shaft extending along the radial direction of the support shaft, a swing arm is arranged on the pivot shaft, a cam bearing matched with the cylindrical cam track groove is arranged on the swing arm, and the track groove can drive the pivot shaft to rotate to finally drive the negative pressure adsorption block to rotate when the rotary frame;

and the servo motors respectively drive the shaft sleeves of the corresponding rotary adsorption mechanisms to rotate at variable speeds, and the direction of the servo motors is consistent with the rotating direction of the circular guide rail.

3. The magic buckle splitting and transferring device according to claim 2, wherein: the variable-speed indexing mechanism further comprises a guide rail support frame, the circular guide rail is fixed on the guide rail support frame, the guide rail support frame is sleeved outside the outermost shaft sleeve through a bearing sleeve, and the guide rail motor is in matched transmission with the guide rail support frame to drive the circular guide rail to rotate.

4. The magic buckle splitting and transferring device of claim 1, wherein: the variable-speed indexing mechanism further comprises a negative pressure supply mechanism which comprises a negative pressure cavity and a negative pressure connecting pipe, wherein the negative pressure cavity comprises two circular sealing plates which are oppositely arranged at intervals, a circular arc-shaped barrier wall which is arranged between the two circular sealing plates and a rotary sleeve which is rotatably sleeved on the peripheries of the two circular sealing plates and the circular arc-shaped barrier wall, the circumference of the negative pressure connecting pipe is arranged on the rotary sleeve, the negative pressure connecting pipe which is opposite to the negative pressure cavity on the rotary sleeve is communicated with the negative pressure cavity, the negative pressure connecting pipes at other positions are not communicated with the negative pressure cavity, and the negative pressure connecting pipes are respectively communicated with corresponding negative.

5. The magic buckle splitting and transferring device of claim 1, wherein: the negative pressure adsorption block comprises a pivoting shaft, an adsorption block inner wall fixed with the pivoting shaft, an adsorption block top fixed with the adsorption block inner wall and provided with meshes, and an adsorption block outer wall fixed with a revolving frame and capable of rotating around the pivoting shaft, a negative pressure inlet is formed in the adsorption block outer wall and connected with a negative pressure supply mechanism through a hose, the adsorption block outer wall is rotatably connected with the adsorption block inner wall through a bearing, a plurality of through holes are formed in the adsorption block inner wall, when the adsorption block outer wall rotates relative to the adsorption block inner wall, the negative pressure inlet can still provide negative pressure for the adsorption block top through the through holes in the adsorption block inner wall, a swinging arm is arranged on the pivoting shaft, a cam bearing matched with a cylindrical cam track groove is arranged on the swinging arm, and when the revolving frame rotates, the track groove can drive.

6. The magic clasp cutting and transferring device according to any one of claims 1 to 5, wherein: the cutter roller is provided with a heating device to prevent the cutter from being bonded with the adhesive layer.

7. The magic clasp cutting and transferring device according to any one of claims 1 to 5, wherein: the variable-speed indexing mechanism further comprises an outer frame, the outer frame comprises a front plate, a rear plate and a yoke plate, the yoke plate is connected between the front plate and the rear plate, and the support shaft is supported between the front plate and the rear plate.

8. The magic clasp cutting and transferring device according to any one of claims 1 to 5, wherein: the surface of the negative pressure adsorption block is provided with an anti-sticking layer.

9. A magic button slitting and transferring method is characterized in that: the method comprises the following steps:

the magic buckle which is continuously conveyed enters from the space between the knife pad roller and the cutter roller and is adsorbed by the knife pad roller, and the surface with the rubber of the magic buckle faces the cutter roller;

the cutter roller and the shim roller synchronously rotate reversely, so that the cutter roller cuts the magic button on the shim roller;

the negative pressure adsorption block rotates to the cutter backing roller for equal linear velocity compounding, the cutter backing roller releases the split magic buckle in the compounding process, the negative pressure adsorption block adsorbs the magic buckle, and at the moment, the adhesive surface of the magic buckle is attached to the binding surface of the negative pressure adsorption block;

the negative pressure adsorption block rotates at variable speed to be compounded with the transfer roller at the same linear speed, transposition is carried out before compounding, the negative pressure adsorption block releases the divided magic buckle in the compounding process, and the transfer roller adsorbs the magic buckle

The diaper continuously conveyed passes through the space between the transfer roller and the compounding roller, so that the diaper is compounded with the magic buckle, and the transfer roller releases the magic buckle in the compounding process.

10. The magic buckle slitting and transferring method of claim 9, wherein: still include cutter heating step, before magic is detained and is got into from between shim roll and cutter roller, heating device heats the cutter roller to prevent cutter and glue film bonding.

Technical Field

The invention relates to the field of machining, in particular to a magic buckle dividing and transferring device and method.

Background

In the diaper production process, after the magic buckle and the diaper are aligned, gluing and compounding steps are carried out to complete the production, and in the process, because the magic buckle is cut in the gluing step, the gluing surface is large and small, and the gluing step is complicated and unstable in quality.

Disclosure of Invention

The invention aims to provide a magic buckle cutting and transferring device and a method aiming at the defects of the prior art, so that the magic buckle is placed after a gluing step in the cutting step, and the glued magic buckle can be cut and transferred.

The invention is realized by the following technical scheme:

a magic buckle dividing and transferring device comprises a cutter roller, a shim roller, a variable speed indexing mechanism, a transferring roller and a composite roller, wherein the cutter roller and the shim roller are parallelly and tangentially arranged and reversely rotate, the transferring roller and the composite roller are parallelly and tangentially arranged and reversely rotate, the variable speed indexing mechanism is provided with a plurality of negative pressure adsorption blocks which are circumferentially distributed and can do circular variable speed motion and index in the motion process, the motion circumferences of the negative pressure adsorption blocks are respectively tangentially arranged with the shim roller and the transferring roller, the negative pressure adsorption blocks respectively rotate reversely with the shim roller and the transferring roller, the shim roller and the transferring roller are negative pressure adsorption rollers, continuously conveyed magic buckles enter from the position between the cutter roller and the shim roller and are cut by the cutter roller, continuously conveyed diapers penetrate from the position between the transferring roller and the composite roller to be attached with the magic buckles, the linear speeds of the shim roller and the transferring roller are different, the variable speed motion of the negative pressure adsorption blocks is set to be compounded with the shim roller and compounded with the transferring roller, make the magic buckle can transfer to the negative pressure from the shim roller and adsorb the piece and transfer to the roller from the negative pressure, the negative pressure adsorbs the piece and has the adsorption plane of preventing the viscose, and the area face of gluing that the magic was buckled adsorbs the adsorption plane laminating of piece with the negative pressure, and the area face of gluing that the process transfer roller made the magic buckle is towards diaper and laminating on the diaper.

Further, the variable speed indexing mechanism comprises

The supporting shaft is fixedly arranged;

the circular guide rail can rotate around the axis of the circular guide rail and is coaxially arranged with the support shaft;

the guide rail motor is connected with and drives the circular guide rail to rotate;

the cylindrical cam is arranged on the supporting shaft and is provided with a track groove;

the rotary adsorption mechanisms comprise a rotary frame, a shaft sleeve and a negative pressure adsorption block, wherein the shaft sleeve is rotatably sleeved outside the support shaft, one end of the rotary frame is fixedly connected with the shaft sleeve, the other end of the rotary frame is slidably connected with the circular guide rail through a first sliding block, the negative pressure adsorption block can be rotatably arranged on the rotary frame around a pivot shaft extending along the radial direction of the support shaft, a swing arm is arranged on the pivot shaft, a cam bearing matched with the cylindrical cam track groove is arranged on the swing arm, and the track groove can drive the pivot shaft to rotate to finally drive the negative pressure adsorption block to rotate when the rotary frame;

and the servo motors respectively drive the shaft sleeves of the corresponding rotary adsorption mechanisms to rotate at variable speeds, and the direction of the servo motors is consistent with the rotating direction of the circular guide rail.

Furthermore, the variable-speed indexing mechanism further comprises a guide rail support frame, the circular guide rail is fixed on the guide rail support frame, the guide rail support frame is sleeved outside the outermost shaft sleeve through a bearing, and the guide rail motor is matched with the guide rail support frame for transmission to drive the circular guide rail to rotate.

Furthermore, the variable speed indexing mechanism further comprises a negative pressure supply mechanism, the negative pressure supply mechanism comprises a negative pressure cavity and a negative pressure connecting pipe, the negative pressure cavity comprises two circular sealing plates which are oppositely arranged at intervals, a circular arc-shaped barrier wall which is arranged between the two circular sealing plates and a rotary sleeve which is rotatably sleeved on the peripheries of the two circular sealing plates and the circular arc-shaped barrier wall, the circumference of the negative pressure connecting pipe is arranged on the rotary sleeve, the negative pressure connecting pipe which is opposite to the negative pressure cavity on the rotary sleeve is communicated with the negative pressure cavity, the negative pressure connecting pipes at other positions are not communicated with the negative pressure cavity, and the negative pressure connecting pipes are respectively communicated with corresponding negative.

Further, the negative pressure adsorption block comprises a pivot shaft, an adsorption block inner wall fixed with the pivot shaft, an adsorption block top fixed with the adsorption block inner wall and provided with meshes, and an adsorption block outer wall fixed with the rotary frame and capable of rotating around the pivot shaft, a negative pressure inlet is formed in the adsorption block outer wall and connected with the negative pressure supply mechanism through a hose, the adsorption block outer wall is rotatably connected with the adsorption block inner wall through a bearing, a plurality of through holes are formed in the adsorption block inner wall, when the adsorption block outer wall rotates relative to the adsorption block inner wall, the negative pressure inlet can still provide negative pressure for the adsorption block top through the through holes in the adsorption block inner wall, a swing arm is arranged on the pivot shaft, a cam bearing matched with the cylindrical cam track groove is arranged on the swing arm, and when the rotary frame rotates, the track groove can drive the pivot shaft.

Further, the cutter roller is provided with a heating device to prevent the cutter from being bonded with the adhesive layer.

Furthermore, the variable speed indexing mechanism further comprises an outer frame, the outer frame comprises a front plate, a rear plate and a connecting plate, the connecting plate is connected between the front plate and the rear plate, and the supporting shaft is supported between the front plate and the rear plate.

Furthermore, the surface of the negative pressure adsorption block is provided with an anti-sticking layer.

A magic button slitting and transferring method comprises the following steps:

the magic buckle which is continuously conveyed enters from the space between the knife pad roller and the cutter roller and is adsorbed by the knife pad roller, and the surface with the rubber of the magic buckle faces the cutter roller;

the cutter roller and the shim roller synchronously rotate reversely, so that the cutter roller cuts the magic button on the shim roller;

the negative pressure adsorption block rotates to the cutter backing roller for equal linear velocity compounding, the cutter backing roller releases the split magic buckle in the compounding process, the negative pressure adsorption block adsorbs the magic buckle, and at the moment, the adhesive surface of the magic buckle is attached to the binding surface of the negative pressure adsorption block;

the negative pressure adsorption block rotates at variable speed to be compounded with the transfer roller at the same linear speed, transposition is carried out before compounding, the negative pressure adsorption block releases the divided magic buckle in the compounding process, and the transfer roller adsorbs the magic buckle

The diaper continuously conveyed passes through the space between the transfer roller and the compounding roller, so that the diaper is compounded with the magic buckle, and the transfer roller releases the magic buckle in the compounding process.

Further, the method also comprises a cutter heating step, wherein before the magic buckle enters the space between the knife pad roller and the cutter roller, the cutter roller is heated by the heating device so as to prevent the cutter from being bonded with the adhesive layer.

The invention has the following beneficial effects:

1. the invention realizes the tape adhesive cutting transfer of the magic button, solves the problem of unstable gluing quality of the magic button after cutting in the prior art, greatly improves the product quality and reduces the defective rate.

2. The rotary sleeve with the negative pressure connecting pipe rotates around the arc-shaped barrier wall, so that the negative pressure connecting pipe can intermittently supply negative pressure according to the position of the barrier wall, and the adsorption head can adsorb and release the component at a fixed position.

3. The circular guide rail can rotate around the axis of the circular guide rail, the moving distance of the revolving frame which moves in a variable speed mode relative to the circular guide rail is greatly reduced, mechanical abrasion is reduced, and the production service life of the device is prolonged.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic front view of the shift index mechanism of the present invention;

FIG. 3 is a schematic side view of the shift indexing mechanism of the present invention;

FIG. 4 is a schematic structural diagram of a rotary adsorption mechanism according to the present invention;

FIG. 5 is a schematic structural view of a negative pressure supply mechanism according to the present invention;

FIG. 6 is a schematic structural view of the circular guide rail, the guide rail motor and the circular guide rail support frame of the present invention;

FIG. 7 is a schematic view of a front view of the negative pressure chamber of the present invention;

fig. 8 is a front sectional structural view of the negative pressure chamber of the present invention.

The labeled information in the graph is:

the variable-speed indexing mechanism 1, the cutter roller 2, the shim roller 3, the transfer roller 4, the compound roller 5, the magic buckle 6, the negative pressure adsorption block 11, the support shaft 12, the circular guide rail 13, the cylindrical cam 14, the rotary adsorption mechanism 15, the negative pressure supply mechanism 16, the outer frame 17, the bottom frame 18, the fixing plate 19, the cutter roller shaft 21, the heating device 22, the cutter 23, the wiping cutter wheel 24, the pivot shaft 111, the adsorption block inner wall 112, the adsorption block top 113, the adsorption block outer wall 114, the negative pressure inlet 115, the hose 116, the through hole 117, the swing arm 118, the cam bearing 119, the guide rail support frame 131, the first slider 132, the first toothed ring 133, the second gear 134, the guide rail motor 139, the rotary frame 151, the shaft sleeve 152, the first gear 153, the chain 154, the flange structure 155, the vertical plate 156, the transverse plate 157, the servo motor 159, the negative pressure cavity 161, the negative pressure adapter 162, the circular top plate 1631, the circular bottom, The device comprises a rotary sleeve 164, a blocking block 165, a supporting strip 1651, a circular inner wall 166, a second toothed ring 167, a third gear 168, a negative pressure driving motor 169, a front plate 171, a rear plate 172, a connecting plate 173, a linear guide rail 181, a second sliding block 182 and a negative pressure interface 191.

Detailed Description

A magic buckle dividing and transferring device comprises a cutter roller 2, a shim roller 3, a variable speed indexing mechanism 1, a transferring roller 4 and a composite roller 5, wherein the cutter roller 2 and the shim roller 3 are parallelly and tangentially arranged and reversely rotate, the transferring roller 4 and the composite roller 5 are parallelly and tangentially arranged and reversely rotate, the variable speed indexing mechanism 1 is provided with a plurality of negative pressure adsorption blocks 11 which are circumferentially distributed and can do circular variable speed motion and index in the motion process, the motion circumferences of the negative pressure adsorption blocks 11 are respectively tangentially arranged with the shim roller 3 and the transferring roller 4, the negative pressure adsorption blocks 11 are respectively reversely rotated with the shim roller 3 and the transferring roller 4, the shim roller 3 and the transferring roller 4 are negative pressure adsorption rollers, a magic buckle 6 which is continuously conveyed enters from between the cutter roller 2 and the shim roller 3 and is cut by the cutter roller 2, a diaper which is continuously conveyed passes from between the transferring roller 4 and the composite roller 5 to be attached to the magic buckle 6, the linear velocity of the shim roller 3 and the transferring roller 4 is different, negative pressure adsorbs the variable speed motion of piece 11 to set to with the 3 constant speed of shim stock roller compound with transfer roller 4 constant speed compound, make magic buckle 6 can transfer to negative pressure from shim stock roller 3 and adsorb piece 11 and transfer to transfer roller 4 from negative pressure adsorption piece 11, negative pressure adsorption piece 11 has the adsorption plane of preventing the viscose, magic buckle 6 take the face of glue and the adsorption plane laminating of negative pressure adsorption piece 11, transfer roller 4 through making magic buckle 6 take the face of glue towards diaper and laminating on the diaper.

The cutter roller 2 comprises a cutter roller shaft 21, a heating device 22, a cutter 23 and a wiping cutter wheel 24, the cutter 23 is fixed on the cutter roller shaft 21, the heating device 22 heats the cutter 23, the amount of viscose of the cutting edge of the cutter 23 in the process of cutting the magic buckle 6 is reduced, and the wiping cutter wheel 24 is arranged on one side of the cutter 23 and used for removing the viscose on the cutter 23.

The variable speed indexing mechanism 1 comprises an outer frame 17, an underframe 18, a fixing plate 19, a support shaft 12, a circular guide rail 13, a guide rail support frame 131, a guide rail motor 139 for driving the circular guide rail 13, a cylindrical cam 14, three rotary adsorption mechanisms 15, three servo motors 159 for driving the rotary adsorption mechanisms 15, a negative pressure supply mechanism 16 and a negative pressure drive motor 169 for driving the negative pressure supply mechanism 16, wherein the three servo motors 159 are fixed on the fixing plate 19, the fixing plate 19 is provided with a negative pressure interface 191 for providing a negative pressure source for the negative pressure supply mechanism 16, the underframe 18 is fixed with the fixing plate 19, the underframe 18 is provided with a linear guide rail 181, a second sliding block 182 matched with the linear guide rail 181 is arranged below the outer frame 17, and the outer frame 17 can horizontally move along the direction. The outer frame 17 includes a front plate 171, a rear plate 172, and a yoke plate 173, the yoke plate 173 is connected between the front plate 171 and the rear plate 172, and the support shaft 12 is supported between the front plate 171 and the rear plate 172. The rotary adsorption mechanism 15 comprises a rotary frame 151, a shaft sleeve 152 and a negative pressure adsorption block 11, a servo motor 159 drives a first gear 153 to drive the shaft sleeve 152 to rotate through a chain 154, the three shaft sleeves 152 are nested layer by layer through a bearing, the rotary arrangement is outside a support shaft 12, the rotation between the three shaft sleeves 152 is not interfered with each other, the three rotary frame 151 comprises a vertical plate 156 and a transverse plate 157, the vertical plate 156 is fixedly connected with the transverse plate 157, one end of the vertical plate 156 is fixedly connected with the corresponding shaft sleeve 152 through a flange structure 155, and one end of the transverse plate 157 is connected with a circular guide rail 13 in a sliding fit mode through a first. Circular guide 13 fixed mounting is on guide rail support frame 131, and guide rail support frame 131 sets up on back plate 172 and is connected with back shaft 12 through the bearing and can rotate around back shaft 12, and guide rail support frame 131 is equipped with first ring gear 133, and guide rail motor 139 is through the first ring gear 133 cooperation of second tooth 134 with guide rail support frame 131, thereby drive guide rail support frame 131 and drive circular guide 13 and rotate. The negative pressure adsorption block 11 comprises a pivot axis 111, an adsorption block inner wall 112 fixed with the pivot axis 111, an adsorption block top 113 fixed with the adsorption block inner wall 112 and provided with meshes, and an adsorption block outer wall 114 fixed with the revolving frame 15 and capable of rotating around the pivot axis 111, the adsorption block outer wall 114 is provided with a negative pressure inlet 115, the suction block outer wall 114 is connected with the suction block inner wall 112 through a bearing by being connected with the negative pressure supply mechanism 16 through a hose 116, the suction block inner wall 112 is provided with a plurality of through holes 117, when the suction block outer wall 114 rotates relative to the suction block inner wall 112, the negative pressure inlet 115 can still provide negative pressure for the top 113 of the adsorption block through the through hole 117 of the inner wall 112 of the adsorption block, the top surface of the top 113 of the adsorption block is a convex surface protruding towards the middle, the pivot shaft 111 is provided with a swing arm 118, the swing arm 118 is provided with a cam bearing 119 matched with the track groove of the cylindrical cam 14, and when the revolving frame 151 rotates, the track groove can drive the pivot shaft 111 to rotate and finally drive the negative pressure adsorption block 11 to rotate. The negative pressure supply mechanism 16 comprises a negative pressure cavity 161 and three negative pressure connecting pipes 162, the negative pressure cavity 161 comprises a circular top plate 1631 and a circular bottom plate 1632 which are oppositely arranged at intervals and the circle centers of which are fixed on the support shaft 12, a circular inner wall 166 which is arranged between the circular top plate 1631 and the circular bottom plate 1632 and is abduced for the support shaft, a circular arc-shaped barrier wall 165 which is arranged between the circular top plate 1631 and the circular bottom plate 1632, a rotary sleeve 164 which can rotate around the support shaft 12 and is sleeved on the peripheries of the circular top plate 1631, the circular bottom plate 1632 and the circular arc-shaped barrier wall 165, the support shaft 12 is fixedly arranged with the circular top plate 1631 and the circular bottom plate 1632 through the circular inner wall 166, supporting bars 1651 are arranged at the two ends of the arc-shaped barrier wall 165, the circular top plate 1631 and the circular bottom plate 1632 are fixedly connected with the supporting bars 166 between the circular top plate 163, the three negative pressure connecting pipes 162 are circumferentially arranged on the rotary sleeve 164, the negative pressure connecting pipe 162 opposite to the negative pressure cavity 161 on the rotary sleeve 164 is communicated with the negative pressure cavity 161, the negative pressure connecting pipes 162 at other positions are not communicated with the negative pressure cavity 161, the negative pressure connecting pipes 162 are respectively communicated with the corresponding negative pressure adsorption blocks 11 through the hoses 116, the bottom of the rotary sleeve 164 is provided with a second toothed ring 167, and the negative pressure driving motor 169 drives the second toothed ring 167 through a third gear 168 so as to drive the rotary sleeve 164 to rotate.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.