Conveying positioning line and railway wagon metal rubber part polishing production line

Abstract

The invention relates to the technical field of rail wagon metal rubber part polishing, in particular to a conveying positioning line and a rail wagon metal rubber part polishing production line, and discloses the conveying positioning line which drives a tray to move on a guide rail through a chain wheel assembly, the tray runs stably, and when the chain wheel assembly stops running, the tray is driven to move. And when the tray stays near the position of the clamping tool, the clamping tool is used for clamping the material placed above the tray, and positioning of the material is completed. The embodiment of the invention further discloses an implementation mode of the railway wagon metal rubber part polishing production line, the two polishing manipulators are arranged on the two sides of the turnover manipulator correspondingly, materials are firstly polished by the first manipulator and then turned over by the turnover manipulator after polishing is completed, and then the manipulator completing turnover is polished by the second manipulator. Polishing is completed in one-time conveying through the two polishing mechanical arms and the turning-over mechanical arm, and the production efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of grinding metal rubber parts of railway freight cars, and in particular to a transmission positioning line and a grinding production line for metal rubber parts of railway freight cars. Background Art

[0002] Metal rubber parts are important parts in the bogies of railway freight cars. They play the role of shock absorption and conductivity during the operation of freight cars, ensuring the stability and safety of railway freight cars. Metal rubber parts are generally composed of metal frames and filled rubber. The metal frames after spraying are wrapped with rubber in the vulcanization process. Due to the differences in the size of recycled metal frames, there is often glue overflow on the surface of the vulcanized metal rubber parts. The glue overflow not only affects the product quality, but also affects the painting effect. Therefore, the overflow of metal rubber parts needs to be trimmed and polished.

[0003] At present, enterprises use manual grinding operations. Workers use handheld angle grinders to grind the metal rubber parts with overflowed glue one by one. The grinding process requires manual flipping and moving of metal rubber parts. Due to the large volume and weight of metal rubber parts and their complex shapes, manual grinding not only has the problems of high labor intensity and low efficiency, but also the product quality and stability are difficult to guarantee. In addition, the grinding process will generate a large amount of dust and metal powder, and the on-site environment is very harsh. Working for a long time in this environment also causes damage to human health. In order to reduce the labor intensity of workers, improve production efficiency, and improve the on-site environment, a railway freight car metal rubber parts robot grinding production line was developed.

[0004] Based on this, it is necessary to develop and design a transmission positioning line and a railway freight car metal rubber parts grinding production line. Summary of the invention

[0005] The embodiments of the present invention provide a transmission positioning line and a railway freight car metal rubber parts grinding production line, which are used to solve the problem of low efficiency of manual grinding in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides a transmission positioning line, comprising:

[0007] body frame, sprocket assembly, guide rails, multiple pallets, and clamping fixtures;

[0008] The guide rail and the chain of the sprocket assembly are both annular, the guide rail is fixedly connected to the main frame, and the sprocket assembly is adjacently arranged around the guide rail and fixedly connected to the main frame;

[0009] The plurality of trays are arranged on the guide rail at equal intervals, the plurality of trays are respectively slidably connected to the guide rail, and the plurality of trays are respectively fixedly connected to the chain of the sprocket assembly;

[0010] The clamping tool comprises: a first finger cylinder and a clamping claw, the body of the first finger cylinder is fixedly connected to the body frame, and the clamping claw is fixedly connected to the movable end of the first finger cylinder;

[0011] When the sprocket assembly is running, the multiple pallets are driven by the sprocket assembly to move along the guide rail; when the pallet stops inside the clamping jaws of the clamping tool, the material supported by the pallet is positioned and fixed by the clamping force of the clamping tool.

[0012] In a possible implementation, the sprocket assembly includes: a plurality of sprockets, a roller chain, and a power device;

[0013] The plurality of sprockets are rotatably connected to the main frame, the plurality of sprockets are located in the same horizontal plane, and the roller chain horizontally surrounds the plurality of sprockets;

[0014] The body of the power device is fixedly connected to the body frame, and the output shaft of the power device is driven by one of the multiple sprockets.

[0015] In one possible implementation, the power device is a servo motor.

[0016] In a possible implementation, the sprocket assembly further includes: a guide plate;

[0017] The guide plate is fixedly arranged below the sprocket, and a gap between a plane of the guide plate and a plane of the sprocket is larger than half of the total width of the roller chain and smaller than the total width of the roller chain.

[0018] In a possible implementation, the transmission positioning line further includes: a positioning component;

[0019] The positioning assembly includes: a lifting device and a guide block;

[0020] The body of the lifting device is fixedly connected to the body frame, and the guide block is fixedly connected to the lifting end of the lifting device;

[0021] A groove is provided above the guide block; a block is provided on the outside of the tray; the shape of the guide block groove is the same as that of the tray block;

[0022] When the tray moves to above the guide block, the lifting device drives the guide block to rise so that the mold block of the tray is inserted into the mold groove of the guide block to complete the positioning of the tray.

[0023] In a second aspect, an embodiment of the present invention provides a railway freight car metal rubber parts grinding production line, including the conveying and positioning line as described in the first aspect or any possible implementation of the first aspect, and the railway freight car metal rubber parts grinding production line also includes:

[0024] The first grinding robot and the flipping robot;

[0025] The first grinding robot is fixedly arranged on one side of the clamping fixture, and the flipping robot is arranged on one side of the first grinding robot along the transmission direction of the sprocket assembly;

[0026] When the sprocket assembly stops running and the metal rubber piece located above the tray is clamped by the clamping device, the first grinding manipulator uses the grinding device at its front end to grind the metal rubber piece clamped by the clamping device;

[0027] When the sprocket assembly stops running, the flipping robot uses the second finger cylinder at its front end to flip the metal rubber piece on the tray parked at a predetermined position.

[0028] In a possible implementation, the railway freight car metal rubber parts grinding production line further includes: a tool changer, wherein the grinding device of the first grinding manipulator is a force-controlled electric spindle;

[0029] The tool changing rack is fixedly arranged within the range of movement of the first grinding robot, and the tool changing rack is provided with a plurality of steps, and a plurality of sheet-shaped tool racks are fixedly arranged horizontally on the vertical surface of each step, and the sheet-shaped tool racks are provided with U-shaped openings;

[0030] The force-controlled electric spindle of the first grinding robot inserts the grinding head clamped into the sheet-like tool holder from above the sheet-like tool holder, and moves along the opening direction of the sheet-like tool holder to remove the grinding head from the sheet-like tool holder.

[0031] In a possible implementation, a tool unloading plate is horizontally provided on the top surface of the tool changing rack, and an opening is provided below the tool unloading plate.

[0032] In one possible implementation, the conveying positioning line is provided with two of the clamping fixtures and two tool changing racks, and the railway freight car metal rubber parts grinding production line also includes a second grinding robot, and the second grinding robot, one of the tool changing racks and one of the clamping fixtures are arranged on one side relative to the flipping robot along the conveying direction of the sprocket assembly.

[0033] In one possible implementation, the railway freight car metal rubber parts grinding production line further includes a cantilever crane, which is fixedly disposed on a side of the first grinding robot away from the transmission direction of the sprocket assembly.

[0034] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0035] The embodiment of the present invention discloses a conveying positioning line, which relies on a sprocket assembly to drive a pallet to move on a guide rail, and the pallet runs stably. When the sprocket assembly stops running and the pallet stays near the position of a clamping tool, the material placed above the pallet is clamped by a clamping tool to complete the positioning of the material, thereby facilitating a power grinding device to grind the material. The positioning position is relatively accurate and the grinding effect is good. Since the grinding device can be relied on to grind based on the positioning position, manual participation is reduced and the grinding efficiency is high.

[0036] The embodiment of the present invention also discloses an embodiment of a railway freight car metal rubber parts grinding production line, which is provided with two grinding robots, which are respectively arranged on both sides of the flipping robot. The material is firstly polished by the first robot, and then flipped by the flipping robot after the grinding is completed. The robot that completes the flipping is then polished by the second robot. That is, the grinding is completed in one transmission by two grinding robots and one flipping robot, and the production efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1 This is a schematic diagram of a railway freight car metal rubber parts grinding production line provided by an embodiment of the present invention;

[0039] Figure 2 is a schematic diagram of a transmission positioning line provided by an embodiment of the present invention;

[0040] Figure 3 It is a schematic diagram of a grinding robot provided in an embodiment of the present invention;

[0041] Figure 4 It is a schematic diagram of a flipping robot provided in an embodiment of the present invention;

[0042] Figure 5 It is a schematic diagram of a tool changer provided in an embodiment of the present invention;

[0043] Figure 6 is a schematic diagram of a clamping tool provided in an embodiment of the present invention;

[0044] Figure 7 is a schematic diagram of a positioning component provided by an embodiment of the present invention;

[0045] Figure 8 is a schematic diagram of a sprocket assembly provided in an embodiment of the present invention;

[0046] Fig. 9 This is a video screenshot of the production site of the railway freight car metal rubber parts grinding production line provided by the embodiment of the present invention;

[0047] Fig.10 It is a screenshot of a video showing the grinding head of a grinding robot provided in an embodiment of the present invention being replaced.

[0048] In the figure:

[0049] 110 main frame;

[0050] 120 sprocket assembly;

[0051] 121 sprocket;

[0052] 122 Roller chain;

[0053] 130 rails;

[0054] 140 pallets;

[0055] 141 guide block;

[0056] 150 Clamping fixture;

[0057] 151 First Finger Cylinder;

[0058] 152 Gripper;

[0059] 161 guide plate;

[0060] 162 Lifting device;

[0061] 170 First grinding robot;

[0062] 171 grinding device;

[0063] 180 flipping robot;

[0064] 181 second finger cylinder;

[0065] 190 Tool holder change;

[0066] 191 steps;

[0067] 192 Sheet knife holder;

[0068] 193 unloading plate;

[0069] 210 Cantilever crane. DETAILED DESCRIPTION

[0070] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, and methods are omitted so as not to obscure the description of the present invention with unnecessary details.

[0071] In order to make the purpose, technical solutions and advantages of the present invention more clear, a specific implementation method will be described below in conjunction with the accompanying drawings.

[0072] The following is a detailed description of an embodiment of the present invention. This example is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0073] Figure 1 A flow chart of a transmission positioning line provided for an embodiment of the present invention.

[0074] like Figure 1-8 As shown, it shows the principle diagram of the transmission positioning line and the railway truck metal rubber parts grinding production line provided by the embodiment of the present invention, which is described in detail as follows:

[0075] An embodiment of the present invention provides a transmission positioning line, comprising:

[0076] A main frame 110, a sprocket assembly 120, guide rails, a plurality of trays 140, and a clamping fixture 150;

[0077] The guide rail and the chain of the sprocket assembly 120 are both annular, the guide rail is fixedly connected to the main frame 110, and the sprocket assembly 120 is adjacently arranged around the guide rail and fixedly connected to the main frame 110;

[0078] The plurality of trays 140 are arranged on the guide rail at equal intervals, the plurality of trays 140 are respectively slidably connected to the guide rail, and the plurality of trays 140 are respectively fixedly connected to the chain of the sprocket assembly 120;

[0079] The clamping tool 150 includes: a first finger cylinder 151 and a clamping claw 152, wherein the body of the first finger cylinder 151 is fixedly connected to the body frame 110, and the clamping claw 152 is fixedly connected to the movable end of the first finger cylinder 151;

[0080] When the sprocket assembly 120 is running, the multiple pallets 140 are driven by the sprocket assembly 120 to move along the guide rail; when the pallet 140 stops inside the clamping jaws 152 of the clamping fixture 150, the material supported by the pallet 140 is positioned and fixed by the clamping force of the clamping fixture 150.

[0081] Illustratively, a first aspect of an embodiment of the present invention provides a conveying positioning line, which is a conveying line with an annular guide rail as the main body, driven by a sprocket assembly 120, and relies on a clamping tool 150 to position and clamp multiple pallets 140 slidably connected to the guide rail.

[0082] Specifically, the pallet 140 slides on the annular guide rail, and the chain of the sprocket assembly 120 is arranged in a ring around the guide rail. The pallet 140 and the chain are provided with fixed points. When the chain is running, it drives the pallet 140 to slide on the guide rail. When the chain stops, the clamping tool 150 arranged on the main frame 110 is used to clamp the material placed above the pallet 140, such as the metal rubber parts of a railway truck, so as to complete the positioning of the material.

[0083] The embodiment of the present invention relies on the sprocket assembly 120 to drive the tray 140 to move on the guide rail, and the tray 140 runs stably. When the sprocket assembly 120 stops running and the tray 140 stays near the position of the clamping tooling, the clamping tooling 150 is used to clamp the material placed above the tray 140 to complete the positioning of the material, thereby facilitating the power grinding device 171 to grind the material. The positioning position is relatively accurate and the grinding effect is good. Since the grinding device 171 can be relied on to grind based on the positioning position, manual participation is reduced and the grinding efficiency is high.

[0084] In some embodiments, the sprocket assembly 120 includes: a plurality of sprockets 121, a roller chain 122, and a power device;

[0085] The plurality of sprockets 121 are rotatably connected to the main frame 110 , the plurality of sprockets 121 are located in the same horizontal plane, and the roller chain 122 horizontally surrounds the plurality of sprockets 121 ;

[0086] The body of the power device is fixedly connected to the body frame 110 , and the output shaft of the power device is driven by one of the sprockets 121 among the plurality of sprockets 121 .

[0087] In some embodiments, the power device is a servo motor.

[0088] In some embodiments, the sprocket assembly 120 further includes: a guide plate 161;

[0089] The guide plate 161 is fixedly disposed below the sprocket 121 , and a gap between a plane of the guide plate 161 and a plane of the sprocket 121 is larger than half of the total width of the roller chain 122 and smaller than the total width of the roller chain 122 .

[0090] For example, in some scenarios, the sprocket assembly 120 is a device with a roller chain 122 as the main body and a sprocket 121 driven by a power device as the power transmission system. Since the pitch of the roller chain 122 is a fixed value, the pallet 140 can be positioned more accurately by outputting a predetermined number of rotations through the power device.

[0091] In some application scenarios, the power device is a servo motor. Since the servo motor can more accurately control the moving distance of the roller chain 122, the pallet 140 can be docked at the working position of the clamping fixture 150 every time, thereby achieving accurate track positioning.

[0092] In some application scenarios, a guide plate 161 is provided under the sprocket assembly 120. Since the sprocket 121 and the chain operate horizontally, the risk of the chain detaching from the sprocket 121 increases under the action of gravity. The guide plate 161 is provided under the sprocket 121, and the gap between the guide plate 161 and the sprocket 121 is less than the width of a chain. Therefore, the possibility of the chain detaching from the sprocket 121 is reduced, and the operation is more reliable.

[0093] In some embodiments, the transmission positioning line further comprises: a positioning component;

[0094] The positioning assembly includes: a lifting device 162 and a guide block 141;

[0095] The body of the lifting device 162 is fixedly connected to the body frame 110, and the guide block 141 is fixedly connected to the lifting end of the lifting device 162;

[0096] A groove is provided above the guide block 141; a block is provided on the outer side of the tray 140; the shape of the groove of the guide block 141 is the same as the shape of the block of the tray 140;

[0097] When the tray 140 moves to above the guide block 141 , the lifting device 162 drives the guide block 141 to rise so that the mold block of the tray 140 is inserted into the mold groove of the guide block 141 to complete the positioning of the tray 140 .

[0098] Exemplarily, the embodiment of the present invention is further provided with a positioning assembly, which is a guide block 141 driven by a lifting device 162 (cylinder), and a mold block matching the guide block 141 is provided on the tray 140. When the lifting device 162 rises, the guide block 141 clamps the mold block to complete the positioning and locking of the position of the tray 140. The positioning is accurate and reliable, which can prevent the cumulative error caused by chain wear and increased pitch. When used for a long time, no adjustment is required, which is more reliable.

[0099] In a second aspect, an embodiment of the present invention provides a railway freight car metal rubber parts grinding production line, including the conveying and positioning line as described in the first aspect or any possible implementation of the first aspect, and the railway freight car metal rubber parts grinding production line also includes:

[0100] A first grinding robot 170 and a flipping robot 180;

[0101] The first grinding robot 170 is fixedly arranged on one side of the clamping fixture 150 , and the flipping robot 180 is arranged on one side of the first grinding robot 170 along the transmission direction of the sprocket assembly 120 ;

[0102] When the sprocket assembly 120 stops running and the metal rubber piece located above the tray 140 is clamped by the clamping device, the first grinding robot 170 grinds the metal rubber piece clamped by the clamping device using the grinding device 171 at its front end;

[0103] When the sprocket assembly 120 stops running, the flipping robot 180 uses the second finger cylinder 181 at its front end to flip the metal rubber piece on the tray 140 parked at a predetermined position.

[0104] Illustratively, the second aspect of the embodiment of the present invention provides a railway freight car metal rubber parts grinding production line, which is provided with two manipulators around the transmission positioning line provided in the first aspect, one of which is provided with a grinding device 171, and the other is provided with a finger cylinder. When the tray 140 is positioned and the material above the tray 140 is clamped by the clamping fixture 150, the material is driven by the first manipulator to grind the material by the grinding device 171, and when the material moves to the working position of the flipping manipulator 180, the flipping manipulator 180 clamps the material by its finger cylinder and drives the material to complete the flipping. Since the transmission positioning line is annular, the material after flipping is polished again, thereby completing the material grinding process.

[0105] The road truck metal rubber parts grinding production line provided by the embodiment of the present invention uses a robot to flip and grind, that is, the grinding process requires almost no human intervention, has high production efficiency, and improves the working environment.

[0106] In some embodiments, the railway freight car metal rubber parts grinding production line further includes: a tool changer 190, wherein the grinding device 171 of the first grinding robot 170 is a force-controlled electric spindle;

[0107] The tool changing rack 190 is fixedly arranged within the range of movement of the first grinding robot 170, and the tool changing rack 190 is provided with a plurality of steps 191, and a plurality of sheet-shaped tool racks 192 are fixedly arranged horizontally on the vertical surface of each step 191, and the sheet-shaped tool racks 192 are provided with a U-shaped opening;

[0108] The force-controlled electric spindle of the first grinding robot 170 inserts the grinding head into the sheet-like tool holder 192 from above the sheet-like tool holder 192 and moves along the opening direction of the sheet-like tool holder 192 to remove the grinding head from the sheet-like tool holder 192 .

[0109] In some embodiments, a tool unloading plate 193 is horizontally disposed on the top surface of the tool changing rack 190 , and an opening is disposed below the tool unloading plate 193 .

[0110] For example, in some scenarios, a tool changing rack 190 is fixed within the movable range of the grinding robot, and the front end of the grinding robot is a force-controlled electric spindle. After setting the timing of tool changing, the grinding robot will insert the tool handle from the opening of the sheet tool rack 192 at the time of tool changing, and take out the grinding tool from the opening, thereby realizing automatic replacement of the grinding tool and improving production efficiency.

[0111] In some other scenarios, the tool changing rack 190 is provided with a tool unloading plate 193. The robot controls the grinding device 171 to loosen the tool handle and lift it up. The tool is removed from the grinding device 171 by means of the tool unloading plate 193 and falls into the opening below the tool unloading plate 193. The removed tools are collected.

[0112] The production line equipped with a 190-meter tool changer can reduce the number of processes involving human intervention, improve production efficiency, and ensure the effectiveness of the tool and the quality of grinding.

[0113] In some embodiments, the conveying positioning line is provided with two of the clamping fixtures 150 and two tool changing racks 190, and the railway freight car metal rubber parts grinding production line also includes a second grinding robot, and the second grinding robot, one of the tool changing racks 190 and one of the clamping fixtures 150 are arranged on one side relative to the flipping robot 180 along the conveying direction of the sprocket assembly 120.

[0114] For example, in some application scenarios, two grinding robots are provided, which are respectively arranged on both sides of the flipping robot 180. The material is first ground by the first robot, and then flipped by the flipping robot 180 after grinding. The flipping robot is then ground by the second robot. That is, grinding is completed in one transmission by two grinding robots and one flipping robot 180, which improves production efficiency.

[0115] In addition, a tool changing rack 190 is also provided next to the second manipulator, and the second manipulator also relies on the tool changing rack 190 next to it to complete the replacement of the tool.

[0116] In some embodiments, the railway freight car metal rubber parts grinding production line further includes a cantilever crane 210 , and the cantilever crane 210 is fixedly disposed on a side of the first grinding robot 170 away from the transmission direction of the sprocket assembly 120 .

[0117] For example, in some scenarios, the production line is also provided with a cantilever crane 210, and the operator can rely on the cantilever crane 210 to complete the material transfer, for example, to lift the polished material from the pallet 140, or to lift the material to be polished onto the pallet 140, saving physical effort.

[0118] The conveying production line implementation mode of the present invention relies on the sprocket assembly 120 to drive the pallet 140 to move on the guide rail. The pallet 140 runs stably. When the sprocket assembly 120 stops running and the pallet 140 stays near the position of the clamping tooling, the clamping tooling 150 is used to clamp the material placed above the pallet 140 to complete the positioning of the material, thereby facilitating the power grinding device 171 to grind the material. The positioning position is relatively accurate and the grinding effect is good. Since the grinding device 171 can be relied on to grind based on the positioning position, manual participation is reduced and the grinding efficiency is high.

[0119] The implementation method of the railway freight car metal rubber parts grinding production line of the present invention is provided with two grinding robots, which are respectively arranged on both sides of the flipping robot 180. The material is firstly ground by the first robot, and then flipped by the flipping robot 180 after the grinding is completed. The robot that completes the flipping is then ground by the second robot. That is, the grinding is completed in one transmission by two grinding robots and one flipping robot 180, and the production efficiency is higher.

[0120] Fig. 9 It is a screenshot of the production site video of the railway freight car metal rubber parts grinding production line provided by the embodiment of the present invention.

[0121] Fig.10 It is a screenshot of a video showing the grinding head of a grinding robot provided in an embodiment of the present invention being replaced.

[0122] It should be understood that the size of the serial numbers of the steps in the above implementation does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the implementation method of the present invention.

[0123] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A transmission positioning line, characterized in that: include: A main frame (110), a sprocket assembly (120), a guide rail, a plurality of trays (140) and a clamping tool (150); The guide rail and the chain of the sprocket assembly (120) are both annular, the guide rail is fixedly connected to the main body frame (110), and the sprocket assembly (120) is adjacently arranged around the guide rail and fixedly connected to the main body frame (110); The plurality of trays (140) are arranged on the guide rail at equal intervals, the plurality of trays (140) are respectively slidably connected to the guide rail, and the plurality of trays (140) are respectively fixedly connected to the chain of the sprocket assembly (120); The clamping tool (150) comprises: a first finger cylinder (151) and a clamping claw (152), wherein the body of the first finger cylinder (151) is fixedly connected to the body frame (110), and the clamping claw (152) is fixedly connected to the movable end of the first finger cylinder (151); When the sprocket assembly (120) is in operation, the plurality of pallets (140) are driven by the sprocket assembly (120) to move along the guide rail; when the pallet (140) stops inside the clamping jaws (152) of the clamping fixture (150), the material supported by the pallet (140) is positioned and fixed by the clamping force of the clamping fixture (150).

2. The transmission positioning line according to claim 1, characterized in that: The sprocket assembly (120) comprises: a plurality of sprockets (121), a roller chain (122) and a power device; The multiple sprockets (121) are rotatably connected to the main frame (110), the multiple sprockets (121) are located on the same horizontal plane, and the roller chain (122) horizontally surrounds the multiple sprockets (121); The body of the power device is fixedly connected to the body frame (110), and the output shaft of the power device is driven by a sprocket (121) among the plurality of sprockets (121).

3. The transmission positioning line according to claim 2, characterized in that: The power device is a servo motor.

4. The transmission positioning line according to claim 2, characterized in that: The sprocket assembly (120) further includes: a guide plate (161); The guide plate (161) is fixedly arranged below the sprocket (121), and the gap between the plane of the guide plate (161) and the plane of the sprocket (121) is greater than half the total width of the roller chain (122) and less than the total width of the roller chain (122).

5. The transmission positioning line according to any one of claims 1 to 4, characterized in that: Also includes: Positioning components; The positioning assembly comprises: a lifting device (162) and a guide block (141); The body of the lifting device (162) is fixedly connected to the body frame (110), and the guide block (141) is fixedly connected to the lifting end of the lifting device (162); A groove is provided above the guide block (141); a block is provided on the outside of the tray (140); the shape of the groove of the guide block (141) is the same as the shape of the block of the tray (140); When the tray (140) moves to above the guide block (141), the lifting device (162) drives the guide block (141) to rise so that the mold block of the tray (140) is inserted into the mold groove of the guide block (141), thereby completing the positioning of the tray (140).

6. A railway freight car metal rubber parts grinding production line, characterized in that: The conveying and positioning line comprises the conveying and positioning line as claimed in any one of claims 1 to 5, and further comprises: a first grinding robot (170) and a flipping robot (180); The first grinding robot (170) is fixedly arranged on one side of the clamping fixture (150), and the flipping robot (180) is arranged on one side of the first grinding robot (170) along the transmission direction of the sprocket assembly (120); When the sprocket assembly (120) stops running and the metal rubber piece located above the tray (140) is clamped by the clamping device, the first grinding robot (170) uses the grinding device (171) at its front end to grind the metal rubber piece clamped by the clamping device; When the sprocket assembly (120) stops running, the flipping robot (180) uses the second finger cylinder (181) at its front end to flip the metal rubber piece on the tray (140) parked at a predetermined position.

7. The railway freight car metal rubber parts grinding production line according to claim 6 is characterized in that: Also includes: The tool changer (190) is a grinding device (171) of the first grinding robot (170) which is a force-controlled electric spindle; The tool changing rack (190) is fixedly arranged within the range of movement of the first grinding robot (170), the tool changing rack (190) is provided with a plurality of steps (191), a plurality of sheet-shaped tool racks (192) are fixedly arranged horizontally on the vertical surface of each step (191), and the sheet-shaped tool racks (192) are provided with U-shaped openings; The force-controlled electric spindle of the first grinding robot (170) inserts the grinding head that is clamped into the sheet-like tool holder (192) from above the sheet-like tool holder (192), and moves along the opening direction of the sheet-like tool holder (192) to remove the grinding head from the sheet-like tool holder (192).

8. The railway freight car metal rubber parts grinding production line according to claim 7 is characterized in that: A tool unloading plate (193) is horizontally provided on the top surface of the tool changing rack (190), and an opening is provided below the tool unloading plate (193).

9. The railway freight car metal rubber parts grinding production line according to claim 7, characterized in that: The transmission positioning line is provided with two clamping fixtures (150) and two tool changers (190), and the railway freight car metal rubber parts grinding production line also includes a second grinding robot, and the second grinding robot, one of the tool changers (190) and one of the clamping fixtures (150) are arranged on one side relative to the flipping robot (180) along the transmission direction of the sprocket assembly (120).

10. The railway freight car metal rubber parts grinding production line according to any one of claims 6 to 9, characterized in that: It also includes a cantilever crane (210), wherein the cantilever crane (210) is fixedly arranged on a side of the first grinding robot (170) away from the transmission direction of the sprocket assembly (120).

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