Plastic welding device for automobile tire pressure instrument

Abstract

The utility model relates to a plastic welding device for an automobile tire pressure gauge, which comprises a working table, and a welding mechanism and two groups of clamping mechanisms are arranged on the working table; the clamping mechanism comprises a containing plate capable of linearly moving front and back, a pair of oppositely-arranged object containing grooves are formed in the containing plate, a lifting plate capable of moving up and down is further arranged on the workbench, two sets of pressing springs are fixed to the bottom face of the lifting plate, and a connecting plate is fixed to the bottom face of each set of pressing springs. According to the plastic welding device for the automobile tire pressure instrument, after a workpiece is placed on a left station, a left station starting button is pressed down, and a welding mechanism arrives at a left welding area to complete welding work; an operator can carry out feeding on the right station clamp, after workpieces are placed on the right station, a right station starting button is pressed down, after welding of the left station is completed, the welding mechanism arrives at the right welding area to complete welding work, and the operation is repeated, so that the welding continuity of the welding mechanism is kept, the machining time is effectively saved, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile tire pressure gauge processing, in particular to a plastic welding device for automobile tire pressure gauges. Background Art

[0002] Laser welding technology is widely used in the field of metal material processing, and its excellent performance has long been accepted by various application industries with remarkable results. With the implementation of green environmental protection concepts in global industrial production and considerations of production cost control, plastics, as a renewable non-metallic material with excellent performance, are increasingly widely used in the design and manufacturing of parts in various industries. Traditional metal parts are increasingly replaced by plastic parts with the same performance, and higher requirements are also put forward for the welding connection technology and welding quality between plastic parts. These changes provide opportunities for the application of laser welding technology in the field of plastic materials.

[0003] The automobile tire pressure gauge is a device used to measure automobile tire pressure. During the processing of the automobile tire pressure gauge, it is necessary to first place the two layers of plastic shells on the processing table and press them together through a plastic welding device, and then weld them together through a welding head. After the welding is completed, the finished product is removed, and the workpiece to be processed can be placed on the processing table again for pressing and fixing. Repeat the above operations to complete the welding. During the entire welding process, when the workpiece is loading and unloading, the welding head is in a stopped state, the welding head has poor working continuity, and the welding efficiency is reduced. Therefore, a plastic welding device for an automobile tire pressure gauge is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a plastic welding device for an automobile tire pressure gauge, which has the advantages of better welding continuity and the like. It solves the problem that during the entire welding process, the welding head is in a stopped state when the workpiece is being loaded and unloaded, resulting in poor working continuity of the welding head and reduced welding efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic welding device for a tire pressure gauge for automobiles, comprising a workbench, wherein a welding mechanism and two sets of clamping mechanisms are provided on the workbench;

[0006] The clamping mechanism includes a placement plate that can move linearly forward and backward, and a pair of placement grooves arranged in opposite directions are opened on the placement plate. The workbench is also provided with a lifting plate that can move up and down, and two groups of compression springs are fixed to the bottom surface of the lifting plate, and a connecting plate is fixed to the bottom surface of each group of compression springs, and a compression plate is fixed to the bottom surface of the connecting plate.

[0007] Furthermore, the welding mechanism includes an X-axis linear module, a Y-axis linear module, a Z-axis linear module and a laser welding head, the Y-axis linear module is fixed to the output end of the X-axis linear module, the Z-axis linear module is fixed to the output end of the Y-axis linear module, and the laser welding head is fixed to the output end of the Z-axis linear module.

[0008] Furthermore, a pushing cylinder is fixed on the workbench, a movable plate is fixed on the output end of the pushing cylinder, and the top surface of the movable plate is fixed on the placement plate.

[0009] Furthermore, a pair of limiting rails are fixed on the workbench, and a limiting sliding block slidably connected to the corresponding limiting rails is fixed on the bottom surface of the movable plate.

[0010] Furthermore, a pair of lifting cylinders are fixed on the workbench, and the output shafts of the lifting cylinders are fixed on the lifting plate.

[0011] Furthermore, the number of the compression springs in a group is four, and the four compression springs are respectively fixed at the four corners of the top surface of the connecting plate.

[0012] Furthermore, each of the compression springs has a limit rod inside, one end of the limit rod is fixed to the connecting plate, and the other end of the limit rod extends to the lifting plate.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The automobile tire pressure gauge plastic welding device, when the left station has finished placing the workpiece, press the left station start button, the welding mechanism goes to the left welding area to complete the welding work, the operator can load the material on the right station fixture, when the right station has finished placing the workpiece, press the right station start button, wait for the left station welding to be completed, the welding mechanism goes to the right welding area to complete the welding work, and so on, the cycle maintains the continuity of the welding mechanism, effectively saves processing time, and improves processing efficiency;

[0015] Before the workpiece is tightened, the push cylinder is in the ejection state, which can conveniently place the workpiece in the storage slot of the left station placement plate, making it easier to load the material. During the tightening process, since the pressing spring is in a compressed state, the tension of the pressing spring can enable the pressing plate to firmly press the workpiece onto the placement plate, which helps to improve the welding accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the welding mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the clamping mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the positions of the placement plate and storage slots of the utility model;

[0020] Figure 5 It is a schematic diagram of the upper face state of the connecting plate and the pressing plate of the utility model.

[0021] In the figure: 1. workbench; 2. welding mechanism; 201. X-axis linear module; 202. Y-axis linear module; 203. Z-axis linear module; 204. laser welding head; 3. clamping mechanism; 301. pushing cylinder; 302. movable plate; 303. placement plate; 304. storage slot; 305. limiting rail; 306. limiting slider; 307. positioning rod; 308. lifting cylinder; 309. lifting plate; 310. pressing spring; 311. connecting plate; 312. limiting rod; 313. pressing plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 In this embodiment, a plastic welding device for a tire pressure gauge for automobiles includes a workbench 1, on which a welding mechanism 2 and two sets of clamping mechanisms 3 are provided. After the clamping mechanism 3 clamps and fixes the workpiece, the welding mechanism 2 can be used for welding. After the workpiece is placed on the left station, the left station start button is pressed, and the welding mechanism 2 goes to the left welding area to complete the welding work. The operator can load the material on the right station fixture. After the workpiece is placed on the right station, the right station start button is pressed. After the left station is welded, the welding mechanism 2 goes to the right welding area to complete the welding work. This cycle maintains the continuity of the welding of the welding mechanism 2, effectively saves processing time, and improves processing efficiency.

[0024] The welding mechanism 2 can flexibly change the processing position according to the processing requirements, such as Figure 1-2 As shown, the welding mechanism 2 includes an X-axis linear module 201, a Y-axis linear module 202, a Z-axis linear module 203 and a laser welding head 204. The Y-axis linear module 202 is fixed to the output end of the X-axis linear module 201, the Z-axis linear module 203 is fixed to the output end of the Y-axis linear module 202, and the laser welding head 204 is fixed to the output end of the Z-axis linear module 203.

[0025] The X-axis linear module 201 can make the laser welding head 204 move linearly in the X-axis direction, the Y-axis linear module 202 can make the laser welding head 204 move linearly in the Y-axis direction, and the Z-axis linear module 203 can make the laser welding head 204 move linearly in the Z-axis direction. The orientation of the laser welding head 204 can be flexibly changed according to the orientation of the workpiece. When welding is required at the left station, the laser welding head 204 moves to the left station for laser welding operation, and when welding is required at the right station, the laser welding head 204 can be moved to the right station for laser welding operation. It can be flexibly changed according to processing requirements.

[0026] The clamping mechanism 3 can realize the stable positioning of the workpiece and improve the welding accuracy. Figure 1 , Figure 3-5 As shown, the clamping mechanism 3 includes a pushing cylinder 301 fixed on the workbench 1, a movable plate 302 is fixed to the output end of the pushing cylinder 301, a placing plate 303 is fixed to the top surface of the movable plate 302, and a pair of placement grooves 304 arranged in opposite directions are opened on the placing plate 303. The shape of the placement grooves 304 matches the workpiece. By placing the workpiece in the placement grooves 304, the workpiece can be preliminarily limited.

[0027] Since the welding trajectories at both ends of the workpiece are inconsistent, one end is an arc weld and the other end is a square weld, and the welding sequence set by the laser welding head 204 for the same workpiece remains unchanged, a pair of placement slots 304 on the placement plate 303 are set in reverse. After the square weld and the arc weld of the first workpiece are welded in sequence, the workpiece can be moved directly to the square weld of the second workpiece for sequential welding again, which reduces the travel path of the laser welding head 204 and improves the welding efficiency.

[0028] A pair of limiting rails 305 are fixed on the workbench 1, and a limiting slider 306 slidably connected to the corresponding limiting rails 305 is fixed on the bottom surface of the movable plate 302. Under the guiding action of the limiting slider 306 and the limiting rails 305, the movement of the movable plate 302 is more stable, and positioning rods 307 are respectively fixed at both ends of the limiting rails 305, which can limit the movement range of the movable plate 302.

[0029] A pair of lifting cylinders 308 are also fixed on the workbench 1, and a lifting plate 309 is fixed to the output shaft of the lifting cylinder 308. Two groups of compression springs 310 are fixed to the bottom surface of the lifting plate 309, and a connecting plate 311 is fixed to the bottom surface of each group of compression springs 310. There are four compression springs in a group, and the four compression springs 310 are respectively fixed to the four corners of the top surface of the connecting plate 311. Each compression spring 310 has a limiting rod 312, one end of the limiting rod 312 is fixed to the connecting plate 311, and the other end extends into the lifting plate 309, and a compression plate 313 is fixed to the bottom surface of the connecting plate 311.

[0030] After the workpiece is placed in the storage groove 304, the pushing cylinder 301 retracts until the movable plate 302 moves to directly below the lifting plate 309, and the lifting cylinder 308 retracts. The lifting plate 309 drives the connecting plate 311 to move downward until the pressing plate 313 is in contact with the placement plate 303, which can drive the connecting plate 311 to continue to move downward, and the pressing spring 310 can be compressed. The tension of the pressing spring 310 can enable the pressing plate 313 to firmly press the workpiece onto the placement plate 303, thereby improving the welding accuracy of the workpiece.

[0031] There are corresponding laser perforations on the lifting plate 309 and the connecting plate 311 , and there are track guide grooves on the pressing plate 313 , and the welding track of the laser welding head 204 can be limited by the track guide grooves.

[0032] Laser plastic welding uses projection welding and uses infrared laser as the welding heat source. Generally, lasers in the 800nm-1100nm band are used as the main source. The absorption rate of lasers in this band is relatively low for most transparent or colored hot-melt plastics that can be welded, and the energy loss of lasers passing through these materials is very small. The upper and lower layers of materials stacked together during welding need to meet certain requirements. The upper layer of material is the transmission area, and it should have a higher transmittance for the laser used in welding; while the lower layer of material is the heat action area, and it needs to have a higher absorption rate for the laser.

[0033] Meeting the above two conditions can ensure that the laser can penetrate the upper material to reach the surface of the lower material with less energy loss. Since the lower material has a higher absorption rate, the laser is absorbed at the junction of the two layers of material and generates heat, causing the plastic there to melt and undergo secondary polymerization under appropriate pressure. After cooling, a weld is formed between the upper and lower layers of material to connect them together.

[0034] By adopting the above-mentioned automobile tire pressure gauge plastic welding device and the setting of double stations, the time gap between loading and unloading of workpieces can be fully utilized to improve welding efficiency. The specific welding method is as follows:

[0035] First, in the initial state, the push cylinder 301 is in the ejection state, which is convenient for placing the workpiece in the storage slot 304 of the left station placement plate 303. After the placement is completed, the push cylinder 301 retracts, and the movable plate 302 can drive the placement plate 303 to move to just below the lifting plate 309. The lifting cylinder 308 retracts, and the lifting plate 309 drives the connecting plate 311 to move downward until the pressing plate 313 fits with the placement plate 303, which can drive the connecting plate 311 to continue to move downward, and the pressing spring 310 can be compressed. The tension of the pressing spring 310 can make the pressing plate 313 firmly pressed on the placement plate 303, and the X-axis linear module 201, the Y-axis linear module 202, and the Z-axis linear module 203 can change the orientation of the laser welding head 204, and move the laser welding head 204 to the left station to weld a pair of workpieces on the placement plate 303;

[0036] During the welding process, the laser welding head 204 can complete the loading of the workpiece at the right station. After the welding at the left station is completed, the laser welding head 204 moves to the right welding area to complete the welding work. This cycle effectively saves processing time and improves processing efficiency.

[0037] The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic welding device for automobile tire pressure gauge, characterized in that: It comprises a workbench (1), on which a welding mechanism (2) and two sets of clamping mechanisms (3) are provided; The clamping mechanism (3) comprises a placement plate (303) capable of linear movement forward and backward, the placement plate (303) being provided with a pair of placement slots (304) arranged in opposite directions, the workbench (1) being further provided with a lifting plate (309) capable of moving up and down, two groups of compression springs (310) being fixed to the bottom surface of the lifting plate (309), a connecting plate (311) being fixed to the bottom surface of each group of compression springs (310), and a compression plate (313) being fixed to the bottom surface of the connecting plate (311).

2. The plastic welding device for automobile tire pressure gauge according to claim 1, characterized in that: The welding mechanism (2) comprises an X-axis linear module (201), a Y-axis linear module (202), a Z-axis linear module (203) and a laser welding head (204); the Y-axis linear module (202) is fixed to the output end of the X-axis linear module (201); the Z-axis linear module (203) is fixed to the output end of the Y-axis linear module (202); and the laser welding head (204) is fixed to the output end of the Z-axis linear module (203).

3. The plastic welding device for automobile tire pressure gauge according to claim 1, characterized in that: A material pushing cylinder (301) is fixed on the workbench (1), a movable plate (302) is fixed on the output end of the material pushing cylinder (301), and the top surface of the movable plate (302) is fixed on the placement plate (303).

4. The plastic welding device for automobile tire pressure gauge according to claim 3, characterized in that: A pair of limiting rails (305) are fixed on the workbench (1), and a limiting sliding block (306) slidably connected to the corresponding limiting rails (305) is fixed on the bottom surface of the movable plate (302).

5. The plastic welding device for automobile tire pressure gauge according to claim 1, characterized in that: A pair of lifting cylinders (308) are also fixed on the workbench (1), and the output shafts of the lifting cylinders (308) are fixed on the lifting plate (309).

6. The plastic welding device for automobile tire pressure gauge according to claim 1, characterized in that: The number of the compression springs (310) in a group is four, and the four compression springs (310) are respectively fixed to the four corners of the top surface of the connecting plate (311).

7. The plastic welding device for automobile tire pressure gauge according to claim 1, characterized in that: Each of the compression springs (310) has a limit rod (312) therein, one end of the limit rod (312) is fixed on the connecting plate (311), and the other end of the limit rod (312) extends to the lifting plate (309).

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