Variable-pitch suction mechanism

Abstract

The invention relates to the technical field of material transportation, in particular to a variable-pitch material suction mechanism. Comprising a pitch changing assembly and a material sucking assembly. The driving wheels are arranged to be flexibly connected with the transmission rollers, so that each driving wheel can be independently disassembled and assembled, and compared with a cam groove plate, the driving wheels are not shielded by the base plate, so that the disassembling difficulty of the driving wheels is reduced; each driving wheel is connected with a single material suction assembly through a variable-pitch cam, so that a user can disassemble and assemble the single material suction assembly conveniently, all the driving wheels and the material suction assemblies do not need to be disassembled and replaced, and the disassembling and assembling difficulty of the driving wheels is greatly reduced; therefore, the shutdown installation time of the driving wheel and the material suction assembly is shortened, and the transportation efficiency of the whole product transportation production line is improved; in addition, by changing the installation number of the material suction assemblies, the number of materials carried at a time can be controlled, then the materials are utilized more efficiently, waste is reduced, and full utilization of the materials is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of material transportation, in particular to a variable-distance material suction mechanism. Background Art

[0002] The suction mechanism is a mechanism that transfers product materials from one location to another by means of negative pressure adsorption. It is often used in the process of industrial automated production, and automatically completes the task of product material transportation according to the set instructions or procedures. The variable distance suction mechanism, on the other hand, is a mechanism that changes the distance between product materials according to the requirements during the transportation of product materials, thereby changing the position of product materials to meet the required requirements. There are also technical solutions for variable-distance suction mechanisms in the prior art. For example, a Chinese patent with publication number CN214988627U discloses a variable-distance suction mechanism, including a base plate, a variable-distance component, a driving component and a plurality of suction components, wherein the driving component is mounted on the base plate; the suction component includes a suction connector, a suction carrier and a suction cylinder, wherein the suction connector is mounted on a side of the suction cylinder close to the base plate, the suction carrier is mounted on the bottom side of the suction cylinder, a plurality of suction holes are arranged on the bottom side of the suction carrier, and the inner cavity of the suction cylinder is communicated with the suction holes; the variable-distance component includes a cam slot plate and a variable-distance cam, wherein the cam slot plate is provided with a plurality of cam guide slots, the variable-distance cam is mounted on the suction connector, and the variable-distance cam is slidably arranged in the cam guide slot; the variable-distance suction mechanism of the present application can be applicable to the variable-distance requirements of products of various specifications and has good versatility; However, the variable pitch cam of the technical solution is directly related to the number of cam guide grooves on the cam groove plate. This is because the design of each cam guide groove determines the motion range and variable pitch function of the variable pitch cam, so each variable pitch cam needs to be connected to a cam guide groove, and the number of cam guide grooves on each cam groove plate is certain. When the number of variable pitch cams needs to be increased, it is necessary to replace it with a cam groove plate with more cam guide grooves, which requires stopping the machine to disassemble and debug the cam groove plate. The cam groove plate is located between the base plate and the suction component, so that when the cam groove plate is disassembled, the cam groove plate will be blocked by the suction component. Therefore, all the suction components need to be removed before the cam groove plate can be replaced, which increases the complexity of disassembly of the cam groove plate, resulting in a longer replacement time for the cam groove plate, thereby reducing the production efficiency of the entire product transportation production line; In view of this, in order to overcome the above technical problems, the present invention proposes a variable distance material suction mechanism to solve the above technical problems. Summary of the invention

[0003] In order to make up for the shortcomings of the prior art, the present invention proposes a variable pitch suction mechanism. The present invention arranges a driving wheel and a transmission roller to be flexibly connected so that each driving wheel can be individually disassembled and assembled. Compared with the cam slot plate, since the driving wheel is not blocked by the substrate, the difficulty of disassembling the driving wheel is reduced; and each driving wheel is connected to a single suction assembly through a variable pitch cam, so that the user can disassemble and install a single suction assembly, thereby eliminating the need to disassemble and replace all driving wheels and suction assemblies, thereby greatly reducing the difficulty of disassembling and installing the driving wheels, thereby shortening the downtime for installation of the driving wheels and suction assemblies, and improving the transportation efficiency of the entire product transportation production line; in addition, by changing the number of suction assemblies installed, the amount of material carried at one time can be controlled, thereby more efficiently utilizing the materials, reducing waste, and ensuring full utilization of the materials.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: a variable pitch suction mechanism described in the present invention comprises a variable pitch component and a suction component; the suction component comprises a suction cylinder and a suction platform; the suction platform is fixedly installed at the bottom end of the suction cylinder; the variable pitch component comprises a frame and a driving wheel; a transmission roller is arranged between the driving wheel and the frame; the transmission roller is rotatably connected with the frame; a groove is provided on one side of the driving wheel; the driving wheel is in sliding contact with the transmission roller through the groove wall of the groove; a driving motor is fixedly installed on one side of the frame; the driving motor is used to drive the transmission roller to rotate; a guide rail is provided on one side of the transmission roller; the guide rail is fixedly connected to the frame; a connecting block is fixedly installed on the side of the suction cylinder close to the guide rail; the connecting block is slidably connected to the guide rail; a guide groove is provided on the surface of the driving wheel; a variable pitch cam is slidably connected in the guide groove; the end of the variable pitch cam away from the bottom of the guide groove is fixedly connected to the connecting block; a fixing unit is installed on the surface of the transmission roller; the fixing unit is used to fix the transmission roller to the driving wheel.

[0005] Preferably, the fixing unit includes a fixing rod; a fixing groove is provided on the surface of the transmission roller; the fixing rod is slidingly and sealingly connected in the fixing groove; a connecting groove connected to the fixing groove is provided on the side wall of the transmission roller; a push rod is threadedly connected in the connecting groove; and a clamping groove opposite to the fixing groove is provided on the inner wall of the groove of the driving wheel.

[0006] Preferably, the guide groove on the surface of the driving wheel located in the middle is set to be semicircular; the guide grooves on the surface of the driving wheel located at both ends of the transmission roller are set to be spiral; the closer to the two ends of the transmission roller, the greater the pitch of the spiral guide groove on the surface of the driving wheel.

[0007] Preferably, slots are provided on both sides of the driving wheel located in the middle; slots are provided on the side walls on one side of the driving wheel located at both ends of the transmission roller, and an insertion rod is fixedly connected to the side wall on the other side; the insertion rod is located on the side of the driving wheel away from the frame; a threaded groove connected to the insertion rod is provided on the surface of the driving wheel; a threaded rod is threadedly connected to the threaded groove; a clamping block is rotatably connected to one end of the threaded rod close to the bottom of the slot; a clamping groove matching the clamping block is provided on the surface of the insertion rod.

[0008] Preferably, a circular groove is provided on the surface of the variable pitch cam; a sliding rod is connected to the circular groove in a sliding seal; the sliding rod is fixed to the bottom of the circular groove by a supporting spring; a sliding groove is provided on the inner wall of the guide groove; and one end of the sliding rod away from the circular groove is slidably connected in the sliding groove.

[0009] Preferably, a push groove is provided at the upper end of the connecting block; a push rod is slidably connected in the push groove; and the push rod and the sliding rod are fixedly connected by a steel wire rope.

[0010] Preferably, a rotating column is arranged between the transmission roller and the frame; the rotating column is rotatably connected to the frame; the output shaft of the driving motor is fixedly connected to the end of the rotating column away from the transmission roller; an installation groove and a rectangular groove are provided at the end of the rotating column close to the transmission roller; the rectangular groove is connected to the installation groove; a baffle is rotatably connected in the rectangular groove.

[0011] Preferably, the lower end of the baffle is threadedly connected with a rotating block; the rotating block is made of fluororubber material.

[0012] The beneficial effects of the present invention are as follows: 1. The present invention arranges a flexible connection between the driving wheel and the transmission roller so that each driving wheel can be individually disassembled and assembled. Compared with the cam slot plate, since the driving wheel is not blocked by the base plate, the difficulty of disassembling the driving wheel is reduced; and each driving wheel is connected to a single suction assembly through a variable pitch cam, so that the user can disassemble and install a single suction assembly, thereby eliminating the need to disassemble and replace all the driving wheels and suction assemblies, thereby greatly reducing the difficulty of disassembling and installing the driving wheels, thereby shortening the downtime for the installation of the driving wheels and suction assemblies, and improving the transportation efficiency of the entire product transportation production line; in addition, by changing the number of suction assemblies installed, the amount of material carried at one time can be controlled, thereby making more efficient use of materials, reducing waste, and ensuring full utilization of materials.

[0013] 2. The present invention arranges a push rod so that the push rod can pull the sliding rod into the circular groove through the wire rope during the pressing process, so that the variable pitch cam can be inserted into and pulled out of the guide groove, so as to facilitate the sliding connection and separation of the variable pitch cam and the guide groove of the driving wheel, thereby eliminating the need to install a connecting device, greatly reducing the difficulty of disassembly and assembly of the suction assembly, shortening the disassembly and assembly time of the suction assembly, and improving the disassembly and assembly efficiency of the suction assembly, thereby improving the transportation efficiency of the entire product transportation production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0015] Figure 1 is a stereogram of the present invention; Figure 2 It is a schematic diagram of the structure of the rack used in the present invention; Figure 3 yes Figure 2 The enlarged view of point A in the middle; Figure 4 yes Figure 2 The enlarged view of point B in the middle; Figure 5 is a schematic diagram of the structure of the driving wheel used in the present invention; Figure 6 yes Figure 5 Enlarged view of point C in the middle; Figure 7 It is a schematic diagram of the structure of the variable pitch cam used in the present invention; Figure 8 yes Figure 7 The enlarged view of point D in the middle; In the figure: 1. suction assembly; 11. suction cylinder; 12. suction platform; 13. guide rail; 14. connecting block; 15. variable pitch cam; 151. circular groove; 152. slide rod; 153. support spring; 16. push groove; 161. push rod; 162. wire rope; 2. frame; 21. driving wheel; 211. groove; 212. guide groove; 213. slide groove; 22. transmission roller; 221. fixed rod; 222. fixed groove; 223. connecting groove; 224. push rod; 225. card slot; 23. driving motor; 24. slot; 241. plug rod; 242. threaded groove; 243. threaded rod; 244. tightening block; 245. tightening groove; 25. rotating column; 251. mounting groove; 252. rectangular groove; 26. baffle; 261. rotating block. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0017] like Figures 1 to 8 As shown, a variable pitch material suction mechanism of the present invention comprises a variable pitch component and a material suction component 1; the material suction component 1 comprises a material suction cylinder 11 and a material suction platform 12; the material suction platform 12 is fixedly mounted on the bottom end of the material suction cylinder 11; the variable pitch component comprises a frame 2 and a driving wheel 21; a transmission roller 22 is arranged between the driving wheel 21 and the frame 2; the transmission roller 22 is rotatably connected to the frame 2; a groove 211 is provided on one side of the driving wheel 21; the driving wheel 21 is in sliding contact with the transmission roller 22 through the groove wall of the groove 211; a driving motor 23 is fixedly mounted on one side of the frame 2; the ... The driving motor 23 is used to drive the transmission roller 22 to rotate; a guide rail 13 is provided on one side of the transmission roller 22; the guide rail 13 is fixedly connected to the frame 2; a connecting block 14 is fixedly installed on the side of the suction cylinder 11 close to the guide rail 13; the connecting block 14 is slidably connected to the guide rail 13; a guide groove 212 is provided on the surface of the driving wheel 21; a variable pitch cam 15 is slidably connected in the guide groove 212; the end of the variable pitch cam 15 away from the bottom of the guide groove 212 is fixedly connected to the connecting block 14; a fixing unit is installed on the surface of the transmission roller 22; the fixing unit is used to fix the transmission roller 22 to the driving wheel 21.

[0018] As an embodiment of the present invention, the fixing unit includes a fixing rod 221; a fixing groove 222 is provided on the surface of the transmission roller 22; the fixing rod 221 is slidingly sealed and connected in the fixing groove 222; a connecting groove 223 connected to the fixing groove 222 is provided on the side wall of the transmission roller 22; a push rod 224 is connected to the inner thread of the connecting groove 223; and a card groove 225 opposite to the fixing groove 222 is provided on the inner wall of the groove 211 of the driving wheel 21.

[0019] As an embodiment of the present invention, the guide groove 212 on the surface of the driving wheel 21 located in the middle is set to be semicircular; the guide grooves 212 on the surface of the driving wheel 21 located at both ends of the transmission roller 22 are set to be spiral; the closer to the two ends of the transmission roller 22, the greater the pitch of the spiral guide groove 212 on the surface of the driving wheel 21.

[0020] As an embodiment of the present invention, slots 24 are provided on both sides of the driving wheel 21 located in the middle; slots 24 are provided on the side walls of one side of the driving wheel 21 located at both ends of the transmission roller 22, and a plug rod 241 is fixedly connected to the side wall on the other side; the plug rod 241 is located on the side of the driving wheel 21 away from the frame 2; a threaded groove 242 connected to the plug rod 241 is provided on the surface of the driving wheel 21; a threaded rod 243 is connected to the inner thread of the threaded groove 242; a tightening block 244 is rotatably connected to one end of the threaded rod 243 close to the bottom of the slot 24; a tightening groove 245 matching the tightening block 244 is provided on the surface of the plug rod 241; When working, the existing variable pitch cam 15 is directly related to the number of cam guide grooves on the cam groove plate. This is because the design of each cam guide groove determines the motion range and variable pitch function of the variable pitch cam 15, so each variable pitch cam 15 needs to be connected to a cam guide groove, and the number of cam guide grooves on each cam groove plate is certain. When the number of variable pitch cams 15 needs to be increased, it is necessary to replace it with a cam groove plate with more cam guide grooves, which requires stopping the machine to disassemble and debug the cam groove plate. The cam groove plate is located between the base plate and the suction component 1, so that when the cam groove plate is disassembled, the cam groove plate will be blocked by the suction component 1. Therefore, all the suction components 1 need to be removed before the cam groove plate can be replaced, which increases the complexity of disassembly of the cam groove plate, resulting in a longer replacement time of the cam groove plate, thereby reducing the production efficiency of the entire product transportation production line; In this regard, the present invention provides a flexible connection between the driving wheel 21 and the transmission roller 22, so that each driving wheel 21 can be individually disassembled and assembled. Compared with the cam slot plate, since the driving wheel 21 is not blocked by the substrate, the difficulty of disassembling the driving wheel 21 is reduced; and each driving wheel 21 is connected to a single suction assembly 1 through the variable pitch cam 15, so that the user can disassemble and install a single suction assembly 1, so that there is no need to disassemble and replace all the driving wheels 21 and the suction assembly 1, so that the difficulty of disassembling and installing the driving wheel 21 is greatly reduced, thereby shortening the downtime and installation time of the driving wheel 21 and the suction assembly 1, so that the transportation efficiency of the entire product transportation production line is improved; in addition, by changing the number of suction assemblies 1 installed, the amount of materials transported at one time can be controlled, thereby more efficiently utilizing the materials, reducing waste, and ensuring full utilization of the materials; In the initial state, the fixing rod 221 is located at the center of the transmission roller 22, the fixing rod 221 is deeply inside the fixing groove 222, one end of the push rod 224 is deeply inside the fixing groove 222 and is in sliding sealing contact with the fixing groove 222, the cross-sectional shape of the transmission roller 22 is set to be rectangular, the number of the fixing grooves 222 is set to be two, the two fixing grooves 222 are located on the upper end face and the lower end face of the transmission roller 22, and the two fixing grooves 222 are directly opposite, the user first controls the driving motor 23 to drive the transmission roller 22 to rotate, so that the transmission roller 22 drives the fixing rod 221 on the surface to rotate, so that the fixing rod 221 is directed toward the guide rail 13; then the driving wheel 21 with a semicircular guide groove 212 on its surface is installed at the center of the driving roller 22, the groove 211 of the driving wheel 21 is directed toward the driving roller 22, and the driving wheel 21 is pushed downward to approach the driving roller 22, so that the driving roller 22 is inserted into the groove 211; when the driving roller 22 contacts the groove bottom of the groove 211, the push rod 224 is rotated so that the push rod 224 threadedly connected with the connecting groove 223 can be screwed into the connecting groove 223, so that the end of the push rod 224 close to the groove bottom of the fixing groove 222 is deeply inserted into the fixing groove 222, and the driving roller 222 is driven by the push rod 224. The fixing groove 222 is filled with hydraulic oil, so when the push rod 224 enters the fixing groove 222, the space in the fixing groove 222 is reduced, so that the hydraulic oil in the fixing groove 222 is squeezed, so that the hydraulic pressure of the hydraulic oil increases, so that the hydraulic oil pushes the fixing rod 221 to extend out of the fixing groove 222; if the slot 225 of the side wall of the groove 211 of the driving wheel 21 is not directly opposite to the fixing groove 222, the extended fixing rod 221 will be blocked by the groove wall of the groove 211, so that the fixing rod 221 cannot be extended, and then it is difficult for the push rod 224 to continue to rotate into the fixing groove 222. The user needs to push the driving wheel 21 to slide on the transmission roller 22, so that the driving wheel 21 can drive the card slot 225 to move, so that when the card slot 225 moves to face the fixed slot 222, the push rod 224 blocked by the groove wall of the groove 211 will enter the card slot 225 under the push of the hydraulic oil, and the push rod 224 can continue to rotate until the push rod 224 completely enters the connecting groove 223, and the fixed rod 221 is completely inserted into the card slot 225, so that the driving wheel 21 with a semicircular guide groove 212 on the surface is fixed at the center of the transmission roller 22;Similarly, the driving wheel 21 with the spiral guide groove 212 on the surface is installed on the driving roller 22, so that the driving wheel 21 with the spiral guide groove 212 on the surface is distributed on both sides of the driving wheel 21 with the semicircular guide groove 212 on the surface, so that the insertion rod 241 fixedly connected to one side of the driving wheel 21 with the spiral guide groove 212 on the surface is aligned with the slot 24 of the side wall of the driving wheel 21 with the semicircular guide groove 212 on the surface, and the driving wheel 21 with the spiral guide groove 212 on the surface drives the insertion rod 241 on one side to approach the driving wheel 21 with the semicircular guide groove 212 on the surface, so that the insertion rod 241 approaches and is inserted into the slot 24, so that the insertion rod 241 1, the tightening groove 245 on the surface of the screw groove 242 is opposite to the screw groove 242, and then the screw rod 243 is inserted into the screw groove 242, and the screw rod 243 is rotated so that the screw groove 242 spirals into the screw groove 242; because the screw groove 242 is opposite to the tightening groove 245, and the lower end of the screw rod 243 is rotatably connected with the tightening block 244, the screw rod 243 will push the tightening block 244 into the tightening groove 245 during the process of penetrating the screw groove 242, so that the tightening block 244 fixes the insertion rod 241 in the slot 24 through the groove wall of the tightening groove 245; thereby, the two adjacent driving wheels 21 are connected. Similarly, when the number of suction components 1 needs to be increased, the increased number of suction components 1 can be firstly connected as needed. The driving wheel 21 is fixed on the driving roller 22, and then the added suction assembly 1 is connected to the driving wheel 21. There is no need to remove all the driving wheels 21, and thus it is also avoided to remove other suction assemblies 1, so that the difficulty of disassembling and installing the driving wheel 21 is greatly reduced, thereby shortening the downtime and installation time of the driving wheel 21 and the suction assembly 1, so that the transportation efficiency of the entire product transportation production line is improved; when the driving wheel 21 is installed, the connecting block 14 connected to the suction carrier 12 is slidably connected to the guide rail 13, and at the same time, the variable pitch cam 15 on one side of the connecting block 14 is inserted into the corresponding guide groove 212 on the surface of the driving wheel 21, so that the connecting block 14 passes through the variable pitch cam 15 Slidingly connected in the guide groove 212, the frame 2 is then installed on the conveying mechanism of the conveying production line; since an air hole connected to the air pipe is opened at the upper end of the suction cylinder 11; the external vacuum pump is connected to the air hole through the air pipe, and when suction is needed, the conveying mechanism drives the frame 2 to the top of the product material, so that the suction carrier 12 contacts the product material, and then controls the vacuum pump to suck out the gas in the suction cylinder 11 through the air pipe, so that the suction carrier 12 connected to the suction cylinder 11 can generate negative pressure suction through the lower end air hole, so that the suction carrier 12 absorbs the product material through the negative pressure suction, and then controls the conveying mechanism to drive the suction carrier 12 to move, thereby transporting the material absorbed by the suction carrier 12;When the distance between the suction carriers 12 needs to be changed, the driving motor 23 is controlled to operate so that the driving motor 23 can drive the transmission roller 22 to rotate, so that the transmission roller 22 drives the driving wheel 21 to rotate, so that the driving wheel 21 can generate a driving force on the variable pitch cam 15 in the guide groove 212 through the inner wall of the guide groove 212 on the surface during the rotation, so that the variable pitch cam 15 is pushed by the groove wall of the guide groove 212 and slides along the guide rail 13 toward the two ends of the transmission roller 22, thereby realizing the distance adjustment between the two adjacent suction carriers 12; its driving pitch variation principle is similar to that of the cam pitch variation slide; because the closer to the two ends of the transmission roller 22, the greater the pitch of the spiral guide groove 212 on the surface of the driving wheel 21, the greater the distance of the suction carrier 12 driven by the driving wheel 21 close to the two ends of the transmission roller 22, and according to the demand for pitch variation, the driving wheel 21 of different lengths can be replaced, that is, the driving wheel 21 of different pitches of the spiral guide groove 212 can be replaced to realize the adjustability of the pitch variation distance, so that the practical application effect of the present invention is further improved. ;

[0021] As an embodiment of the present invention, a circular groove 151 is provided on the surface of the variable pitch cam 15; a sliding rod 152 is slidingly and sealably connected in the circular groove 151; the sliding rod 152 is fixedly connected to the bottom of the circular groove 151 by a supporting spring 153; a sliding groove 213 is provided on the inner wall of the guide groove 212; and one end of the sliding rod 152 away from the circular groove 151 is slidingly connected in the sliding groove 213.

[0022] As an embodiment of the present invention, a push groove 16 is formed at the upper end of the connection block 14 ; a push rod 161 is slidably connected in the push groove 16 ; the push rod 161 is fixedly connected to the sliding rod 152 via a steel wire rope 162 .

[0023] As an embodiment of the present invention, a rotating column 25 is arranged between the transmission roller 22 and the frame 2; the rotating column 25 is rotatably connected to the frame 2; the output shaft of the driving motor 23 is fixedly connected to the end of the rotating column 25 away from the transmission roller 22; the end of the rotating column 25 close to the transmission roller 22 is provided with an installation groove 251 and a rectangular groove 252; the rectangular groove 252 is connected to the installation groove 251; a baffle 26 is rotatably connected in the rectangular groove 252.

[0024] As an embodiment of the present invention, the lower end of the baffle 26 is threadedly connected with a rotating block 261; the rotating block 261 is made of fluororubber material; During operation, the connecting block 14 of the existing material suction assembly 1 is slidably connected to the guide rail 13 through the connecting device, so that the connecting device needs to be disassembled and assembled each time the material suction assembly 1 is disassembled and assembled, thereby increasing the time for disassembling and assembling the material suction assembly 1; in this regard, the present invention provides a sliding rod 152, and when it is necessary to connect the material suction assembly 1 with the driving wheel 21, the user needs to first press the pushing rod 161 to make the pushing rod 161 enter the pushing groove 16, so that the pushing rod 161 pulls the sliding rod 152 through the steel wire rope 162 fixed thereto to squeeze the supporting spring 153 deep into the circular groove 151, and since a snap-fitting groove is provided on the side of the connecting block 14 close to the variable pitch cam 15, the snap-fitting groove is aligned with the guide rail 13, so that the guide rail 13 is snapped into the snap-fitting groove, and the connection block 14 is limited at this time, and then the variable pitch cam 15 is inserted into the guide groove 212, so that the variable pitch cam 15 drives the sliding rod 152 The push rod 161 enters the guide groove 212, and the push rod 161 is released, so that the push rod 161 no longer applies tension to the slide rod 152 through the wire rope 162, so that the slide rod 152 extends out of the circular groove 151 and inserts into the slide groove 213 of the inner wall of the guide groove 212 under the push of the restoring force of the support spring 153, so that the variable pitch cam 15 is slidably connected with the guide groove 212 through the slide rod 152. When it is necessary to remove the suction component 1, it is only necessary to press the push rod 161 again, so that the push rod 161 pulls the slide rod 152 into the circular groove 151 through the wire rope 162. At this time, the variable pitch cam 15 is no longer slidably connected with the guide groove 212, and the suction component 1 can be removed, so there is no need to install a connecting device, which greatly reduces the difficulty of disassembling and assembling the suction component 1, shortens the disassembly and assembly time of the suction component 1, and improves the disassembly and assembly efficiency of the suction component 1, thereby improving the transportation efficiency of the entire product transportation production line; If more suction assemblies 1 need to be added, the added driving wheels 21 need to be installed one by one, which will shorten the installation efficiency of the driving wheels 21. To this end, the present invention sets a rotating column 25 so that the rotating column 25 and the driving roller 22 are movably connected, and a threaded hole is provided at the lower end of the baffle 26, and the rotating block 261 is threadedly connected in the threaded hole. Before more suction assemblies 1 are needed, a set of spare driving wheels 21 and a spare driving roller 22 can be prepared according to the use requirements, and the required number of driving wheels 21 can be installed on the spare driving roller 22. When more suction assemblies 1 need to be replaced, the user first removes a small amount of suction assemblies 1 from the guide rail 13, and then rotates The rotating block 261 is rotated so that the rotating block 261 spirally extends out of the threaded hole, so that the rotating block 261 is away from the rotating column 25 and no longer contacts the rotating column 25, and then the baffle plate 26 is rotated so that the baffle plate 26 in the rectangular groove 252 drives the rotating block 261 to rotate upward with its hinge point with the rectangular groove 252 as the center, so that the baffle plate 26 no longer blocks the notch of the installation groove 251, so that the installation groove 251 is opened, and the transmission roller 22 with more driving wheels 21 installed on the surface is inserted into the installation groove 251 from the installation groove 251 through one end of the rotating column 25, so that the two ends of the transmission roller 22 are located in the installation grooves 251 of the two rotating columns 25, and then the baffle plate 26 is rotated downward The plate 26 drives the rotating block 261 to rotate downward and insert into the rectangular groove 252 below. At this time, the baffle 26 cooperates with the bottom of the mounting groove 251 to clamp the driving roller 22 in the mounting groove 251. At this time, the rotating block 261 is located below the rectangular groove 252. The rotating block 261 is rotated so that the rotating block 261 spirally enters the threaded hole, so that the rotating block 261 contacts the rotating column 25. Since the rotating block 261 is made of fluororubber material, the rotating block 261 has a certain elasticity. The rotating block 261 is continuously rotated so that the rotating block 261 is blocked by the lower end surface of the rotating column 25 and deforms elastically, so that the rotating block 261 is elastically deformed under the action of the elastic restoring force. It is tightly pressed against the lower end surface of the rotating column 25, so that the baffle 26 is fixed in the rectangular groove 252, so that the baffle 26 can fix the driving roller 22 in the mounting groove 251, to ensure that the rotating column 25 can drive the driving roller 22 to rotate stably, and then stably drive the suction component 1 to change the pitch, so that the variable-pitch suction component 1 can stably transport the product material, thereby further improving the practical application effect of the present invention; and because the rotating block 261 made of fluororubber material has the advantages of wear resistance, corrosion resistance and aging resistance, the rotating block 261 made of fluororubber material can withstand the wear between it and the rotating column 25, so that the service life of the rotating block 261 is effectively improved.

[0025] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A variable-distance suction mechanism, comprising a variable-distance component and a suction component (1); the suction component (1) comprises a suction cylinder (11) and a suction platform (12); the suction platform (12) is fixedly mounted on the bottom end of the suction cylinder (11); characterized in that: The pitch-changing assembly comprises a frame (2) and a driving wheel (21); a driving roller (22) is arranged between the driving wheel (21) and the frame (2); the driving roller (22) is rotatably connected to the frame (2); a groove (211) is provided on one side of the driving wheel (21); the driving wheel (21) is in sliding contact with the driving roller (22) through the groove wall of the groove (211); a driving motor (23) is fixedly mounted on one side of the frame (2); the driving motor (23) is used to drive the driving roller (22) to rotate; a guide rail (13) is provided on one side of the driving roller (22); the guide rail (13) The rail (13) is fixedly connected to the frame (2); a connecting block (14) is fixedly installed on one side of the suction cylinder (11) close to the guide rail (13); the connecting block (14) is slidably connected to the guide rail (13); a guide groove (212) is provided on the surface of the driving wheel (21); a variable pitch cam (15) is slidably connected in the guide groove (212); an end of the variable pitch cam (15) away from the bottom of the guide groove (212) is fixedly connected to the connecting block (14); a fixing unit is installed on the surface of the driving roller (22); the fixing unit is used to fix the driving roller (22) to the driving wheel (21).

2. A variable distance suction mechanism according to claim 1, characterized in that: The fixing unit comprises a fixing rod (221); a fixing groove (222) is provided on the surface of the driving roller (22); the fixing rod (221) is slidingly and sealingly connected in the fixing groove (222); a connecting groove (223) communicating with the fixing groove (222) is provided on the side wall of the driving roller (22); a push rod (224) is connected to the inner thread of the connecting groove (223); and a clamping groove (225) facing the fixing groove (222) is provided on the inner wall of the groove (211) of the driving wheel (21).

3. A variable distance suction mechanism according to claim 2, characterized in that: The guide groove (212) on the surface of the driving wheel (21) located in the middle is arranged in a semicircular shape; the guide grooves (212) on the surface of the driving wheel (21) located at both ends of the transmission roller (22) are arranged in a spiral shape; the closer to the two ends of the transmission roller (22), the greater the pitch of the spiral guide groove (212) on the surface of the driving wheel (21).

4. A variable distance suction mechanism according to claim 3, characterized in that: Slots (24) are provided on both sides of the driving wheel (21) located in the middle; a slot (24) is provided on the side wall of one side of the driving wheel (21) located at both ends of the transmission roller (22), and an insertion rod (241) is fixedly connected to the side wall on the other side; the insertion rod (241) is located on the side of the driving wheel (21) away from the frame (2); a threaded groove (242) connected to the insertion rod (241) is provided on the surface of the driving wheel (21); a threaded rod (243) is connected to the inner thread of the threaded groove (242); a clamping block (244) is rotatably connected to one end of the threaded rod (243) close to the bottom of the slot (24); a clamping groove (245) matching the clamping block (244) is provided on the surface of the insertion rod (241).

5. The variable distance material suction mechanism according to claim 4, characterized in that: A circular groove (151) is provided on the surface of the variable pitch cam (15); a sliding rod (152) is slidably and sealably connected in the circular groove (151); the sliding rod (152) is fixedly connected to the bottom of the circular groove (151) via a supporting spring (153); a sliding groove (213) is provided on the inner wall of the guide groove (212); and one end of the sliding rod (152) away from the circular groove (151) is slidably connected in the sliding groove (213).

6. A variable distance suction mechanism according to claim 5, characterized in that: A pushing groove (16) is provided at the upper end of the connecting block (14); a pushing rod (161) is slidably connected in the pushing groove (16); and the pushing rod (161) and the sliding rod (152) are fixedly connected via a steel wire rope (162).

7. The variable distance material suction mechanism according to claim 6, characterized in that: A rotating column (25) is arranged between the transmission roller (22) and the frame (2); the rotating column (25) is rotatably connected to the frame (2); the output shaft of the driving motor (23) is fixedly connected to an end of the rotating column (25) away from the transmission roller (22); an installation groove (251) and a rectangular groove (252) are provided at an end of the rotating column (25) close to the transmission roller (22); the rectangular groove (252) is communicated with the installation groove (251); and a baffle (26) is rotatably connected in the rectangular groove (252).

8. The variable distance material suction mechanism according to claim 7, characterized in that: The lower end of the baffle (26) is threadedly connected to a rotating block (261); the pressing block (244) is made of fluororubber material.

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