A round belt online welding device

Abstract

The invention discloses an online round belt welding device, comprising a bracket, a welding workbench is provided at the top of the bracket, a slide rail is provided on the welding workbench, a first clamping unit, a welding unit and a second clamping unit are slidably provided on the slide rail in sequence; the two ends of the broken round belt are clamped by the first and second clamping units respectively and sent to the welding unit for hot-melt welding. The waste gas generated during the welding process is collected and recycled by an adsorption device. The device can realize online welding of round belts, with high welding quality, long service life of the round belts after welding, and safe and environmentally friendly welding process.

Description

Technical Field

[0001] The invention relates to welding equipment, in particular to an online round belt welding device. Background Art

[0002] Round belts are a type of belts, and together with pulleys, they form round belt drives, which are a type of friction drives. Round belt drives rely on the belt and wheel grooves to press together to generate friction, and have good elasticity. They can relieve impact vibrations during operation, move smoothly, and have low noise. When the load is too large, the belt will slip, which plays a role in protecting the machinery. Round belts are also called polyurethane round belts and connectable round belts. They are usually made of PU, usually have no core, and can be welded by hot melt. Round belts have the simplest structure and are widely used in small machine tools, sewing machines, precision machinery, etc. in countries around the world.

[0003] However, as the working time increases, the round belt will break, which requires reconnection before it can work. The conventional maintenance method is to remove the broken round belt from the pulley, reconnect it and then install it on the pulley, which is time-consuming and laborious. There are also a few online welding methods, but the existing online welding methods cannot keep the round belt with the necessary tension during the welding process. The round belt is prone to slipping when used after welding, and the welding point is easy to break again at the welding point due to the smaller diameter and lower strength. Summary of the invention

[0004] The invention provides a round belt online welding device, which can realize the online welding of the round belt, saves time and labor, and has high welding quality.

[0005] To this end, the technical solution adopted in the present invention is:

[0006] A round belt online welding device comprises a bracket, a welding workbench is provided on the top of the bracket, a slide rail is provided on the welding workbench, a first clamping unit, a welding unit and a second clamping unit are slidably provided on the slide rail in sequence; the two ends of the broken round belt are clamped by the first and second clamping units respectively and sent into the welding unit for hot-melt welding.

[0007] Furthermore, the welding workbench is also provided with a vacuum pump and an activated carbon adsorption device, the vacuum pump is connected to the outlet of the activated carbon adsorption device, and the inlet of the activated carbon adsorption device is connected to the welding unit through a vacuum pipe. The waste gas generated during welding is discharged to the activated carbon adsorption device through the vacuum pipe for adsorption and recovery, which is green and environmentally friendly.

[0008] Furthermore, the first and second clamping units have the same structure, both comprising an upper clamping block and a lower clamping block of an openable type, wherein a circular through hole is formed in the center of the upper and lower clamping blocks when the upper and lower clamping blocks are closed together, wherein the circular through hole is adapted to the round belt, the upper clamping block is provided with a round belt locking mechanism, and the lower clamping block is provided with a slide groove adapted to the slide rail and a clamping block locking mechanism. The design structure of the clamping block is simple and easy to operate. The openable design facilitates the removal of the welded round belt from the clamping block.

[0009] Furthermore, the round belt locking mechanism and the clamping block locking mechanism both include a set screw, which spirally passes through the upper clamping block and its head abuts against the round belt to fix the round belt in the clamping block; the set screw spirally passes through the lower clamping block and its head abuts against the surface of the slide rail to fix the clamping block on the slide rail. The structure is simple and the operation is convenient.

[0010] Furthermore, the welding unit includes an openable upper module and a lower module. When the upper and lower modules are closed together, a circular welding cavity is formed in the center thereof. The welding cavity is connected front to back and its inner diameter is adapted to the round belt. The upper module and the lower module are both made of heat-conducting material, and electric heating tubes are provided in the upper module and the lower module. The lower module is provided with a slide groove adapted to the slide rail and a module locking mechanism.

[0011] The electric heating tube heats the upper and lower modules, and the upper and lower modules transfer heat to the round belt. After the round belt is heated and fused, the heating stops, and the round belt is connected together after cooling. The opening and closing design facilitates the removal of the welded round belt from the welding module. This solution is easy to operate, the round belt is heated evenly, the fusion state is high, and the welding quality is good.

[0012] Furthermore, a detachable sealing cover is provided outside the welding module, and the inlet of the activated carbon adsorption device is connected to the sealing cover through a vacuum pipe. The waste gas generated during the welding process is collected by the sealing cover, and the waste gas is discharged to the activated carbon adsorption device through the vacuum pipe for adsorption and recovery, which is green and environmentally friendly.

[0013] Furthermore, the module locking mechanism includes a set screw, which spirally passes through the lower module and has its head abutting against the surface of the slide rail to fasten the module to the slide rail. The structure is simple and the operation is convenient.

[0014] Furthermore, the welding unit includes an openable upper module and a lower module, and an electric soldering iron; a semicircular through hole is provided in the top center of the lower module, and a slide groove and a module locking mechanism are provided at the bottom; the upper module is a hollow block, and a semicircular through hole is provided in the bottom center of the front and rear sides thereof. When the upper and lower modules are closed, the two semicircular holes are combined into a circular hole, and the circular hole is adapted to the round belt. An open groove is provided on the top surface of the upper module, and the electric soldering iron is inserted into the open groove to perform hot-melt welding on the round belt. The cavity of the upper module is connected to the inlet of the activated carbon adsorption device through a vacuum pipe.

[0015] The electric soldering iron heats the two ends of the broken round belt to make them fused, then removes the electric soldering iron, and connects the round belts together after cooling. The waste gas generated during the welding process is discharged to the activated carbon adsorption device through a vacuum pipe for adsorption and recovery, which is green and environmentally friendly. The opening and closing design makes it easy to remove the welded round belt from the welding module.

[0016] Furthermore, the opening slot of the upper module is provided with a movable cover plate, which is convenient for taking the electric soldering iron and closes the module cavity when not soldering, preventing dust and debris from falling into the soldering cavity and affecting the soldering quality.

[0017] Beneficial effects of the present invention:

[0018] 1. The clamping unit clamps the round belt for online hot-melt welding. During the welding process, the necessary tension of the round belt is maintained. After welding, the round belt can be used normally without slipping. Since the two ends of the round belt are clamped by the clamping unit during welding, the fusion point will not reduce the diameter due to stretching and reduce the strength. The welding quality is high and the service life of the round belt is increased.

[0019] 2. The clamping unit and welding unit are slidably arranged on the slide rail, so that the welding position can be easily adjusted and the welding operation is convenient. The clamping unit and welding unit slide along the slide rail to ensure that the round belt does not twist or deflect during the movement, thus ensuring the quality of the round belt.

[0020] 3. The harmful waste gas generated during the welding process can be sucked into the adsorption device through a vacuum pump for adsorption and recovery, thus achieving the purpose of green environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a schematic diagram of the overall structure of the round belt online welding device according to the present invention.

[0022] Figure 2 Schematic diagram of the structure of the clamping unit of the round belt online welding device according to the first embodiment.

[0023] Figure 3 1 is a schematic structural diagram of a lower clamping block of a clamping unit of an online round belt welding device according to Embodiment 1.

[0024] Figure 4 1 is a schematic structural diagram of an upper clamping block of a clamping unit of an online round belt welding device according to Embodiment 1.

[0025] Figure 5 1 is a schematic diagram of the structure of a welding unit of an online round belt welding device according to Embodiment 1.

[0026] Figure 6 1 is a schematic structural diagram of a lower module of a welding unit of the round belt online welding device according to the first embodiment.

[0027] Figure 7 1 is a schematic structural diagram of an upper module of a welding unit of an online round belt welding device according to Embodiment 1.

[0028] Figure 8 2 is a schematic diagram of the structure of a welding unit of an online round belt welding device according to a second embodiment.

[0029] Fig. 9 1 is a schematic structural diagram of a lower module of a welding unit of an online round belt welding device according to a second embodiment.

[0030] Fig.10 It is a schematic structural diagram of an upper module of a welding unit of an online round belt welding device according to Embodiment 2, with a portion of the upper side surface removed to show the internal cavity structure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0032] In the following description, Figure 1 The orientation of the welding device shown in the figure is taken as a reference, the top of the welding device shown in the figure is "up", and the opposite is "down"; the left side of the welding device shown in the figure is "front", and the opposite is "back".

[0033] Implementation Method 1

[0034] See also Figure 1 The round belt welding device includes a bracket 1, a welding workbench is provided at the top of the bracket 1, a slide rail 2 is provided on the welding workbench, and a first clamping unit 3, a welding unit 4 and a second clamping unit 5 are slidably provided on the slide rail 2 in sequence. The welding unit 4 is covered with a sealing cover 6 on the outside. A vacuum pump 8 and an activated carbon adsorption device 7 are also provided on the welding workbench 11. The vacuum pump 8 is connected to the outlet of the activated carbon adsorption device 7 through a pipeline 81, and the inlet of the activated carbon adsorption device 7 is connected to the sealing cover 6 through a vacuum pipeline 71.

[0035] In this embodiment, a retractable leg 101 is provided at the bottom of the bracket 1. The retractable leg 101 is made of a large and small round tube that is slidably mounted. The large round tube is supported on the work surface, and the small round tube is mounted on the top of the large round tube to support the welding workbench. The large and small round tubes are slidably adjustable, and after being adjusted to the right position, they are locked and positioned by a set screw passing through the large round tube. The height of the welding workbench is adjusted by adjusting the length of the leg. In this embodiment, the cross section of the slide rail 2 is T-shaped.

[0036] See also Figures 2 to 4In this embodiment, the first clamping unit 3 and the second clamping unit 5 have the same structure, and both include an upper clamping block 31 and a lower clamping block 32 of an openable type. In this embodiment, the upper clamping block 31 and the lower clamping block 32 are both made of metal blocks. A threaded hole 311 is provided at the center of the top surface of the upper clamping block 31, and a semicircular through hole 332 is provided at the center of the bottom surface thereof, which penetrates the front and rear side surfaces thereof. The threaded hole 311 is connected to the semicircular through hole 332. A T-shaped slide groove 321 is provided at the center of the bottom of the lower clamping block 32, which penetrates the front and rear side surfaces thereof. The slide groove 321T is adapted to the slide rail 2. The cooperation between the slide groove and the slide rail can ensure that the round belt does not deflect or twist when the clamping block clamps the round belt to slide, thereby improving the welding quality of the round belt. A threaded hole 322 is provided at the side of the bottom of the lower clamping block 32, and the threaded hole 322 is connected to the T-shaped slide groove 321. A semicircular through hole 331 is provided at the top center of the lower clamp block 32, which passes through the front and rear sides thereof. When the upper and lower clamp blocks are closed together, the two semicircular holes 331 and 332 are aligned to form a circular through hole 33, and the aperture of the circular through hole 33 is adapted to the diameter of the round belt. Clamp blocks with different through hole diameters can be provided according to the specifications of the round belt, and the effective clamping and welding of round belts of different specifications can be achieved by replacing the clamp blocks during maintenance.

[0037] The upper clamping block 31 and the lower clamping block 32 can be opened and closed and connected in the following two ways.

[0038] Method 1: a threaded countersunk hole is set in the vertical direction on the outer edge of the lower clamping block, and a corresponding smooth round hole is set on the outer edge of the upper clamping block. The screw passes through the round hole of the upper clamping block and is fastened in the threaded hole of the lower clamping block. When in use, the upper and lower clamping blocks are connected by screws before welding. After welding, the screws are unscrewed, the upper and lower clamping blocks are separated, and the welded round belt is taken out.

[0039] Method 2: a hinge is provided on one side of the upper and lower clamping blocks, and a threaded connection mechanism is provided on the other side, and the upper and lower clamping blocks are hinged at one end and detachably connected at the other end by screws, which is more convenient to use.

[0040] See also Figures 5 to 7In this embodiment, the welding unit 4 includes an upper module 41 and a lower module 42 of an openable type. Both the upper module 41 and the lower module 42 are solid structures and are made of heat-conducting materials. In this embodiment, both the upper module 41 and the lower module 42 are made of carbon steel. The bottom center of the upper module 41 is provided with a semicircular through hole 432 that runs through its front and rear sides, and three heating tube mounting holes 413 are evenly arranged around the semicircular through hole 432, and the heating tube mounting holes 413 are arranged in parallel with the semicircular through hole 432. The bottom center of the lower module 42 is provided with a T-shaped slide 421 that runs through its front and rear sides, and the side of the bottom is provided with a threaded hole 422, and the threaded hole 422 is connected with the T-shaped slide 421. The top center of the lower module 42 is provided with a semicircular through hole 431 that runs through its front and rear sides, and three heating tube mounting holes 423 are evenly arranged around the semicircular through hole 431, and the heating tube mounting holes 423 are arranged in parallel with the semicircular through hole 423. The electric heating tube 44 is inserted into the heating tube installation holes 413 and 423, and its wire is connected to the power supply through the socket. When the upper and lower modules are closed together, the two semicircular holes 431 and 432 are aligned to form a circular through hole 43, and the aperture of the circular through hole 43 is adapted to the diameter of the round belt. Modules with different through hole diameters can be set according to the specifications of the round belt. When the module is replaced during maintenance, effective welding of round belts of different specifications can be achieved.

[0041] The opening and closing connection method of the upper and lower modules can be the same as that of the upper and lower clamping blocks, which will not be repeated here.

[0042] The sealing cover 6 can be made of a steel plate, and the front and rear sides thereof are provided with through holes for the round belt to extend into and notches for the slide rail to pass through, and the top surface is provided with exhaust holes. During the welding operation, the sealing cover 6 is covered on the welding module 4, and the exhaust holes on the top of the sealing cover are connected to the activated carbon adsorption device through a pipeline. The activated carbon adsorption device and the vacuum pump are both existing technologies. The activated carbon adsorption device can be purchased from an existing micro-sized activated carbon device on the market, or it can be made by itself, and can be made by filling bulk activated carbon particles in a micro-sized tank.

[0043] Implementation Method 2

[0044] See also Figures 8 to 10, Embodiment 2 is basically the same as Embodiment 1, except that the welding unit 400 includes an upper module 401 and a lower module 402 of an openable type. The upper module 401 and the lower module 402 are both made of heat-conducting materials, such as carbon steel. The lower module 402 is a solid structure, and a semicircular through hole 4021 is provided at the top center thereof to penetrate the front and rear sides thereof, a T-shaped slide groove 4022 is provided at the bottom center thereof to penetrate the front and rear sides thereof, and a threaded hole 4023 is provided at the side thereof, and the threaded hole 4023 is connected to the slide groove 4022. The upper module 401 is a hollow block, and is provided with a welding cavity 4011. A semicircular through hole 4012 is provided at the bottom center of the front and rear sides of the upper module 401, and an open groove 4013 adapted to the electric soldering iron is provided at the top surface thereof, and an exhaust gas outlet 4014 is provided beside the open groove 4013. A cover plate 4015 is slidably connected to the opening slot 4013 via a connecting column 4016, and the cover plate 4015 can close the opening slot 4013 when the device is not in use.

[0045] The electric soldering iron is an existing device, which is inserted into the welding cavity 4011 through the opening slot 4013 to perform hot-melt welding on the round belt, and the exhaust gas outlet 4014 is connected to the activated carbon adsorption device through a vacuum pipe.

[0046] The upper module 401 and the lower module 402 can be connected by installing a hinge on one side and a buckle on the other side. The buckle can be designed to have a protrusion on the lower module, a buckle body hinged on the upper module, and a hole matching the protrusion on the buckle body. When the upper and lower modules are closed, the buckle body buckles on the protrusion to realize the opening and closing connection of the two modules.

[0047] The opening and closing connection of the two modules can also be achieved by arranging through holes on the four corners of the upper module and threaded holes on the lower module, and inserting screws in the through holes and the threaded holes.

[0048] The following uses the welding device of embodiment 1 as an example to illustrate the working method of the present application:

[0049] Assemble the device. When using it, place it above the broken round belt, and adjust the height of the welding workbench by telescoping the legs 101. After sliding the welding module 4 to a suitable position, fix the welding module to the slide rail 2 by inserting screws 10 in the threaded holes 422. Put a sealing cover 6 on the outer cover of the welding module, and connect the sealing cover to the activated carbon adsorption device 7. Pass the two ends of the broken round belt through the central through holes of the first clamp 3 and the second clamp 5 respectively to expose a length, and tighten the round belt in the first clamp 3 and the second clamp 5 respectively by screws 12 and 13. Push the two clamps 3 and 5 along the slide rail 2 toward the welding module 4, extend the two ends of the broken round belt into the welding cavity 43 of the welding module, and keep a certain tension on the round belt, and fix the two clamps on the slide rail 2 by screws 9 and 11. Start the vacuum pump 8, and energize the electric heating tube 44 to heat the welding module. The round belt is heated and molten to fill the welding cavity 43. The electric heating tube 44 is powered off. After complete cooling, stop the vacuum pump 8, remove the sealing cover 6, open the two clamps and the module, take out the connected round belt from the device, remove the device, and realize the online welding of the round belt.

[0050] The parts not specially described in the above description are all existing technologies or can be realized by existing technologies.

Claims

1. A round belt online welding device, comprising a bracket, characterized in that: A welding workbench is provided at the top of the bracket, and a slide rail is provided on the welding workbench, on which a first clamping unit, a welding unit and a second clamping unit are slidably provided in sequence; the two ends of the broken round belt are clamped by the first and second clamping units respectively and sent into the welding unit for hot-melt welding; The first and second clamping units have the same structure, and both include an upper clamping block and a lower clamping block of an openable type. When the upper and lower clamping blocks are closed together, a circular through hole is formed in the center thereof, and the circular through hole is adapted to the round belt. The upper clamping block is provided with a round belt locking mechanism, and the lower clamping block is provided with a slide groove adapted to the slide rail and a clamping block locking mechanism. The welding unit comprises an upper module and a lower module of an openable type. When the upper and lower modules are closed together, a circular welding cavity is formed at the center thereof. The welding cavity is connected front to back and its inner diameter is adapted to the round belt. The upper module and the lower module are both made of heat-conducting materials. Electric heating tubes are arranged in the upper module and the lower module. The lower module is provided with a slide groove adapted to the slide rail and a module locking mechanism. The round belt locking mechanism and the clamping block locking mechanism both include set screws; the module locking mechanism includes a set screw.

2. A round belt online welding device as claimed in claim 1, characterized in that: The welding workbench is also provided with a vacuum pump and an activated carbon adsorption device. The vacuum pump is connected to the outlet of the activated carbon adsorption device, and the inlet of the activated carbon adsorption device is connected to the welding unit through a vacuum pipe.

3. The round belt online welding device according to claim 1, characterized in that: The set screw of the round belt locking mechanism spirally passes through the upper clamping block, and its head abuts against the round belt, thereby fastening the round belt in the clamping block; the set screw of the clamping block locking mechanism spirally passes through the lower clamping block, and its head abuts against the surface of the slide rail, thereby fastening the clamping block on the slide rail.

4. The round belt online welding device according to claim 1, characterized in that: A detachable sealing cover is arranged outside the welding module, and the inlet of the activated carbon adsorption device is connected with the sealing cover through a vacuum pipe.

5. The round belt online welding device according to claim 1, characterized in that: The set screw of the module locking mechanism spirally passes through the lower module, and its head abuts against the surface of the slide rail, thereby fastening the module to the slide rail.

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