A laser welding machine for valve repair

Abstract

The application discloses a kind of laser welding machines for valve maintenance, including positioning seat, adjusting frame and laser welder, positioning seat is provided with the clamp for clamping valve, laser welder is installed in adjusting frame, laser welder is located above clamp, clamp includes symmetrically arranged jaw, jaw is horizontally slidingly connected on positioning seat, positioning seat is provided with baffle, baffle includes fixed plate and movable plate, fixed plate and movable plate are alternately distributed and all are arc-shaped, fixed plate and movable plate are spliced into the circumference of clamp, movable plate is slidingly connected on positioning seat, transmission mechanism between movable plate and jaw is arranged, interval area is formed between adjacent fixed plate, jaw moves towards each other to complete clamping, movable plate moves to close interval area, fixed plate and movable plate form the surrounding protection of outer circumference, avoid the harm of spark to worker's eyes during welding process, and effectively prevent the harm caused by spark splash, effectively improve use safety.

Description

TECHNICAL FIELD

[0001] The application relates to the field of valve maintenance equipment, in particular to a laser welding machine for valve maintenance. BACKGROUND

[0002] A valve is a device used to control the flow of fluids (liquids, gases, slurries, etc.) in pipes or equipment. It can adjust the flow, pressure and direction of the fluid, and is widely used in various industrial pipe systems, building water supply and drainage systems, heating and gas delivery fields. A damaged valve can cause fluid leakage, flow out of control, and even cause safety accidents. Laser welding machine is needed for valve maintenance. Laser welding machine is a device that uses high-energy density laser beam as heat source to weld materials. Its working principle is based on the heat effect generated when laser interacts with materials. When the laser beam irradiates the surface of the welded materials, the materials absorb the energy of the laser, and the light energy is converted into heat energy, which makes the materials rapidly heat up to the melting point and melt, and then cools and solidifies, thereby connecting two or more parts together.

[0003] The laser welding machine mainly includes a workbench and a laser welder. The valve is clamped and fixed by the clamp on the workbench, and then the laser welder is used to weld the required parts to achieve the purpose of maintenance. However, the sparks generated during the welding process may splash and be blinding, which may harm the workers, and further improvement is needed. SUMMARY

[0004] In order to further improve the safety during use, the application provides a laser welding machine for valve maintenance.

[0005] The application provides a laser welding machine for valve maintenance, which adopts the following technical scheme:

[0006] A laser welding machine for valve maintenance, comprising a positioning seat, an adjusting frame and a laser welder, the positioning seat is provided with a clamp for clamping the valve, the laser welder is installed on the adjusting frame, the laser welder is located above the clamp, the clamp comprises symmetrically arranged clamping jaws, the clamping jaws are horizontally slidably connected to the positioning seat, the positioning seat is provided with a shielding plate, the shielding plate comprises fixed plates and movable plates, the fixed plates and the movable plates are alternately distributed and are both arc-shaped, the fixed plates and the movable plates are spliced to surround the circumference of the clamp, the movable plates are slidably connected to the positioning seat in the circumferential direction, a transmission mechanism for transmitting both the movable plates and the clamping jaws is arranged between the movable plates and the clamping jaws, a spacing area is formed between adjacent fixed plates, and the clamping jaws move towards each other to complete clamping, and the movable plates move to close the spacing area.

[0007] Optionally, the adjusting frame comprises a horizontal frame and a vertical frame, the vertical frame is horizontally and slidingly connected to the horizontal frame, a sliding seat is vertically and slidingly connected to the vertical frame, the laser welder is mounted on the sliding seat, a cover is arranged on the laser welder and used for covering the shielding plate, and the cover, the shielding plate and the positioning seat form a closed welding cavity.

[0008] Optionally, the transmission mechanism comprises a rack and a gear, the rack is arranged at the bottom of the clamping jaw, one side of the rack is engaged with the gear, the gear is rotationally connected to the center of the positioning seat, the gear has a central shaft, the connecting part on the movable plate is extended and fixed on the central shaft, and the movable plate moves circumferentially around the center of the positioning seat.

[0009] Optionally, the cover is provided with an air suction pipe communicated with the welding cavity, the air suction pipe is connected to an air suction fan, the top wall of the shielding plate is provided with a button used for starting the air suction fan, and the cover is triggered to cover the shielding plate to start the air suction fan to perform air suction.

[0010] Optionally, the two sides of the movable plate are provided with scrapers, and the scrapers abut against the inner wall of the fixed plate.

[0011] Optionally, the clamping jaw has a seat body, the seat body is horizontally and slidingly connected to the positioning seat, and the seat body is provided with a driving motor used for driving the clamping jaw to rotate.

[0012] Optionally, one end of the driving motor away from the clamping jaw is provided with an elastic and retractable scraper, and the scraper always abuts against the inner wall of the movable plate.

[0013] Optionally, a lead screw is rotationally connected to the positioning seat, the lead screw penetrates through the seat body, the lead screw is provided with thread segments with opposite screw directions, the seat bodies of the symmetrical clamping jaws are threadedly connected to the thread segments with opposite screw directions, and the lead screw is provided with a first motor used for driving the lead screw to rotate.

[0014] Optionally, one end of the scraper is elastically connected to the movable plate, the movable plate has a groove for plug-in mounting of the scraper, and the groove is internally provided with a reset spring used for driving the scraper to move outward and reset.

[0015] Optionally, the fixed plate and the movable plate are internally hollow to form a reserved hollow groove, and the hollow groove vertically penetrates through the top wall of the fixed plate and the movable plate to form a slot.

[0016] In conclusion, the present application has at least one of the following beneficial technical effects:

[0017] 1. By the combination design of the fixed plate and the movable plate, the movable plate is moved to the state of being dislocated with the fixed plate in the process of the clamping jaw moving to clamp the valve, the fixed plate and the movable plate form the surrounding protection of the outer periphery, avoid the harm of sparks to the eyes of the workers in the welding process, and effectively prevent the harm caused by the spatter of sparks, effectively improve the safety in use;

[0018] 2. In the process of the laser welder moving down, the cover body moves down synchronously to cover on the shielding plate, thereby forming a closed welding cavity, effectively preventing the overflow of harmful gas generated in the welding process, and in the process of the cover body covering, the trigger button is automatically opened to start the air suction fan to suck the harmful gas generated in the welding process, so that there is no peculiar smell during welding to harm the health of the workers and improve the working environment;

[0019] 3. In the welding process, there are sparks flying to cause some welding impurities to adhere to the inner walls of the fixed plate and the movable plate, the design of the scraper and the scraping strip can synchronously realize the welding impurities adhered to the inner walls of the movable plate and the fixed plate in the process of the movable plate moving, realize the automatic cleaning of the welding impurities, and it is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall view of example 1.

[0021] Figure 2 is the sectional view of the clamp in example 1.

[0022] Figure 3 is the top view when the movable plate and the fixed plate are dislocated in example 1.

[0023] Figure 4 is the top view when the movable plate and the fixed plate overlap in example 1.

[0024] Figure 5 is the schematic view of the transmission mechanism in example 1.

[0025] Figure 6 is the partial sectional view of the connection between the movable plate and the fixed plate in example 1.

[0026] Figure 7 is the sectional view of the telescopic rod in example 1.

[0027] Figure 8 is the top view of the movable plate in example 2.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1, base; 2, positioning seat; 3, adjusting frame; 4, laser welder; 5, clamp; 6, cross frame; 7, vertical frame; 8, sliding seat; 9, power source; 10, clamping jaw; 11, seat body; 12, first motor; 13, screw rod; 14, threaded section; 15, drive motor; 16, baffle plate; 17, fixed plate; 18, movable plate; 19, spacing area; 20, gear; 21, rack; 22, center shaft; 23, cover body; 24, welding cavity; 25, air suction pipe; 26, button; 27, scraper; 28, scraper strip; 29, telescopic rod; 30, compression spring; 31, groove; 32, return spring; 33, hollow groove; 34, slot; 35, connecting part. DETAILED DESCRIPTION

[0030] The following will be described in detail in combination with the accompanying drawings Figures 1-8 The application will be further described in detail.

[0031] A laser welder for valve repair, as shown in Figure 1 and Figure 2 , comprises a base 1, a positioning seat 2, an adjusting frame 3 and a laser welder 4, the positioning seat 2 is arranged on one side of the base 1, the adjusting frame 3 is arranged on the other side of the base 1, the laser welder 4 is installed on the adjusting frame 3 to realize position adjustment, and a clamp 5 for clamping a valve is arranged on the positioning seat 2, in actual use, the valve to be repaired is clamped and fixed in the clamp 5, and then the position of the laser welder 4 is adjusted to weld and repair the valve.

[0032] As shown in Figure 1 and Figure 2 , the adjusting frame 3 comprises a cross frame 6 and a vertical frame 7, the cross frame 6 is horizontally fixed on the base 1, the vertical frame 7 is horizontally and slidingly connected on the cross frame 6 in the direction close to the positioning seat 2, the cross frame 6 is provided with a power source 9 for driving the vertical frame 7 to move horizontally, the vertical frame 7 is vertically and slidingly connected with a sliding seat 8, the laser welder 4 is installed on the sliding seat 8, and the vertical frame 7 is also provided with a power source 9 for driving the sliding seat 8 to move up and down, the power source 9 adopts an electric screw rod or an air cylinder, so that the position of the laser welder 4 can be adjusted, thereby being capable of welding and repairing different areas of the valve to be repaired, and having better practicability.

[0033] As shown in Figure 1 and Figure 2As shown, the clamp 5 includes symmetrically arranged clamping jaws 10 mounted on the seat body 11, which is horizontally slidingly connected to the positioning seat 2, and the positioning seat 2 is provided with a driving source for synchronously moving the symmetrically arranged two clamping jaws 10 towards or away from each other, which includes a first motor 12 and a lead screw 13, the lead screw 13 is rotationally connected to the positioning seat 2, the first motor 12 drives the lead screw 13 to rotate, the lead screw 13 is threadedly connected to the seat body 11, and the lead screw 13 has two thread segments 14 with opposite thread directions, and the seat bodies 11 on the symmetrically arranged clamping jaws 10 are respectively threadedly connected to the thread segments 14 with opposite thread directions, so that the rotation of the driving motor 15 can synchronously drive the symmetrically arranged clamping jaws 10 to move horizontally in the same direction or in the opposite direction to realize the switching of clamping and loosening, which is simple in structure and practical, and realizes the quick clamping or loosening operation of the valve; in addition, the seat body 11 is provided with a driving motor 15 for driving the clamping jaw 10 to rotate circumferentially, and the clamping jaw 10 is a pneumatic clamping jaw 10, so that after the clamping jaw 10 clamps the valve, the driving motor 15 can be used to drive the clamping jaw 10 to rotate to drive the valve to rotate to adjust the position, so that the valve can be adjusted to a more comprehensive welding area.

[0034] As Figure 1 , Figure 3 and Figure 4 shown, the positioning seat 2 is provided with a shielding plate 16 for surrounding and blocking the outer periphery of the clamp 5, the shielding plate 16 includes a fixed plate 17 and a movable plate 18, both of which are provided with two symmetrically arranged fixed plates 17 and movable plates 18, both of which are in the form of circular arc strips, and the movable plate 18 is slidingly connected to the positioning seat 2, and the symmetrically arranged fixed plates 17 have a spacing to form an interval 19, and the movable plate 18 can be slid to the interval 19 to block it, when the valve needs to be taken out or placed, the movable plate 18 is slid to the position overlapping with the fixed plate 17, at this time the interval 19 is in an open state, which is convenient for workers to take out or place the valve, when welding and maintenance are needed, the movable plate 18 is driven to slide to a position different from the fixed plate 17, at this time the movable plate 18 is located in the interval 19 to achieve blocking, at this time the valve and the clamp 5 are entirely surrounded inside the shielding plate 16, which avoids the harm of sparks to the eyes of workers during welding and effectively prevents the harm caused by the spatter of sparks, effectively improving the safety in use.

[0035] As Figure 1 , Figure 3 and Figure 5As shown, transmission mechanism is arranged between the movable plate 18 and the seat body 11, the transmission mechanism includes a gear 20 and a rack 21, wherein the rack 21 is fixed on the bottom of the seat body 11, the gear 20 is rotationally connected at the center of the positioning seat 2, and has a center shaft 22 at the center of the gear 20, the bottom of the movable plate 18 extends a connecting part 35 fixed with the center shaft 22, so that the seat body 11 can move horizontally to synchronously slide the movable plate 18 circumferentially to realize position adjustment, when the seat body 11 moves towards to clamp and fix the valve, the movable plate 18 moves to the closed interval area 19 to realize surrounding shielding, when the seat body 11 moves away to release the valve, the movable plate 18 moves to the state deviated from the interval area 19, at this time, it is convenient to take and place the valve, simple and convenient.

[0036] As shown in the drawings, Figure 1 As shown, the laser welder 4 is provided with a cover 23 for covering the top of the shielding plate 16, when the laser welder 4 moves down to the welding position, the cover 23 covers the top of the shielding plate 16, at this time, the cover 23, the shielding plate 16 and the positioning seat 2 form a closed welding cavity 24, which effectively prevents harmful gas generated during welding from overflowing, so that there is no odor during welding to harm the health of workers and improve the working environment; in addition, the cover 23 is provided with a suction pipe 25, one end of the suction pipe 25 communicates with the welding cavity 24, the other end is connected with a suction fan, and a button 26 for starting the suction fan is arranged on the top wall of the shielding plate 16, the suction fan is automatically started during the cover 23 moves down to abut against the shielding plate 16, the suction pipe 25 can effectively suck away the odor gas generated during welding, improve the safety during welding, after welding, the cover 23 moves up and the button 26 is no longer pressed, at this time, the suction fan is automatically closed, the automatic start and stop of the suction fan is realized, without manual operation, simple and convenient and energy-saving.

[0037] As shown in the drawings, Figure 1 , Figure 3 , Figure 6 and Figure 7As shown, due to the existence of sparks during the welding process, that is, the existence of welding debris or impurities adhering to the inner wall of the shielding plate 16, the scraping plate 27 is arranged on the symmetrical two sides of the movable plate 18 to abut against the inner wall of the fixed plate 17, so that the inner wall of the fixed plate 17 can be scraped and cleaned synchronously during the movement of the movable plate 18, automatic scraping and cleaning are realized, which is simple and convenient, and the scraping plate 27 also plays a role in blocking and sealing the connection, preventing the discharge of internal odor gas; the scraping strip 28 is elastically connected to the end of the driving motor 15 away from the clamping jaw 10, and one side of the scraping strip 28 always abuts against the inner wall of the movable plate 18 during the horizontal movement of the seat body 11, so that the welding impurities can be automatically scraped during the movement of the movable plate 18. The telescopic rod 29 connecting the scraping plate 27 and the driving motor 15 is arranged between the scraping plate 27 and the driving motor 15, and the compression spring 30 is arranged in the telescopic rod 29. The elastic reset of the compression spring 30 always maintains the abutting state of the scraping plate 27 and the movable plate 18. During the outward movement of the seat body 11, that is, during the loosening of the valve by the clamping jaw 10, the elastic force of the compression spring 30 gradually increases, thereby achieving better scraping effect.

[0038] As shown in Figure 6 , the scraping plate 27 is elastically connected to the movable plate 18, and the movable plate 18 is provided with a groove 31 for inserting the scraping plate 27, and the reset spring 32 for driving the scraping plate 27 to move outward is arranged in the groove 31, so that the scraping plate 27 and the fixed plate 17 can be kept in good abutting state. Even if the scraping plate 27 is worn out after long-term use, the reset spring 32 can still automatically compensate, and the scraping plate 27 can always maintain good working condition and better durability.

[0039] Embodiment 2

[0040] A laser welding machine for valve maintenance, as shown in Figure 8 , the difference between this embodiment and embodiment 1 is mainly in the structure of the fixed plate 17 and the movable plate 18. In this embodiment, the fixed plate 17 and the movable plate 18 are hollow inside to form a reserved hollow groove 33, and a slot 34 is formed at the top of the hollow groove 33. In this way, the material can be saved while the gravity can be reduced, which is convenient for the better movement of the movable plate 18. In this embodiment, the movable plate 18 is made of a light-transmitting plate, such as a glass plate, which has a certain degree of transparency. At the same time, the design of the hollow groove 33 can insert different light-transmitting plates with different degrees of light transmission according to different needs. In the case that the light generated during welding is not dazzling, the internal welding situation can be roughly observed, which can protect the health of the workers while also taking into account the observation of the internal welding situation.

[0041] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A laser welder for valve repair, characterized by: Including positioning seat (2), adjusting frame (3) and laser welder (4), the positioning seat (2) is provided with clamp (5) for clamping valve, the laser welder (4) is installed in adjusting frame (3), the laser welder (4) is located above clamp (5), the clamp (5) includes symmetrically arranged clamping jaw (10), the clamping jaw (10) is horizontally slidably connected on positioning seat (2), the positioning seat (2) is provided with baffle (16), the baffle (16) includes fixed plate (17) and movable plate (18), the fixed plate (17) and movable plate (18) are alternately distributed and are arc-shaped, the fixed plate (17) and movable plate (18) are spliced into the circumference surrounding clamp (5), the movable plate (18) is slidably connected on positioning seat (2), the movable plate (18) and clamping jaw (10) are provided with transmission mechanism for transmitting both, adjacent the fixed plate (17) forms interval (19) between, the clamping jaw (10) moves towards and completes clamping, and movable plate (18) moves to close interval (19), the transmission mechanism includes rack (21) and gear (20), the rack (21) is arranged at the bottom of clamping jaw (10), one side of the rack (21) is engaged with gear (20), the gear (20) is rotatably connected at the center of positioning seat (2), the gear (20) has central shaft (22) on it, the movable plate (18) extends connection part (35) on the central shaft (22), the movable plate (18) moves circumferentially around the center of positioning seat (2), both sides of movable plate (18) are provided with scraper (27), the scraper (27) is abutted on the inner wall of fixed plate (17), the clamping jaw (10) has seat body (11), the seat body (11) is horizontally slidably connected on positioning seat (2), the seat body (11) is provided with drive motor (15) for driving clamping jaw (10) to rotate, the drive motor (15) is provided with elastic telescopic scraper (28) away from one end of clamping jaw (10), the scraper (28) is always abutted on the inner wall of movable plate (18), one end of scraper (27) is elastically connected on movable plate (18), the movable plate (18) has groove (31) for scraper (27) to be inserted and installed, the groove (31) has reset spring (32) for driving scraper (27) to move outward and reset in it.

2. The laser welder for valve repair of claim 1, wherein: The adjusting frame (3) includes cross frame (6) and vertical frame (7), the vertical frame (7) is horizontally slidably connected on cross frame (6), the vertical frame (7) is vertically slidably connected with sliding seat (8), the laser welder (4) is installed on sliding seat (8), the laser welder (4) is provided with cover (23) for covering on baffle (16), the cover (23), baffle (16) and positioning seat (2) form closed welding cavity (24).

3. The laser welder for valve repair of claim 2, wherein: The cover (23) is provided with a suction pipe (25) communicated with the welding cavity (24), the suction pipe (25) is connected with a suction fan, the top wall of the shielding plate (16) is provided with a button (26) for starting the suction fan, and the cover (23) triggers the button (26) to start the suction fan to suck air when being moved downward to cover the shielding plate (16).

4. The laser welder for valve repair of claim 1, wherein: The positioning seat (2) is rotationally connected with a lead screw (13), the lead screw (13) penetrates through the seat body (11), the lead screw (13) is provided with thread segments (14) with opposite thread directions, the seat body (11) of the symmetrical clamping jaws (10) is threadedly connected on the thread segments (14) with opposite thread directions, and the lead screw (13) is provided with a first motor (12) for driving the rotation of the lead screw (13).

5. The laser welder for valve repair of claim 1, wherein: The fixed plate (17) and the movable plate (18) are internally hollow to form a reserved hollow groove (33), and the hollow groove (33) vertically penetrates through the top wall of the fixed plate (17) and the movable plate (18) to form a groove opening (34).

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