A welding preheating device

Abstract

The utility model relates to welding processing technical field, concretely relates to a welding preheating device, including the shell body, the shell body is provided with heating assembly and with heating assembly correspondence setting, is used for the clamping assembly of spacing fixed object to be processed, the clamping assembly includes the fixed clamping end and the mobile clamping end who places object's bearing station and is located bearing station both sides and each other corresponds, bearing station with mobile clamping end between setting linkage assembly, force acting on bearing station, can make linkage assembly drive mobile clamping end close or far from fixed clamping end, to realize the clamping and release to object, the utility model utilizes the linkage assembly between bearing station and mobile clamping end, has realized the convenient clamping and release to object, when force is in bearing station, linkage assembly can drive mobile clamping end close or far from fixed clamping end, and simple and efficient operation.

Description

Technical Field

[0001] This utility model relates to the field of welding processing technology, and specifically to a welding preheating device. Background Technology

[0002] Heating some parts during welding is mainly to control the temperature of the welding area, improve the quality of the weld and the performance of the joint. It can reduce the temperature difference between the welding area and the base material, slow down the cooling rate, and prevent cracks and hard and brittle structures in the joints of materials such as high-strength steel. It can also make the molten pool flow more smoothly, reducing defects such as porosity and slag inclusions. In addition, post-weld heating can also eliminate stress and prevent the parts from deforming and cracking later.

[0003] In actual production, there are already corresponding heating devices for large, regularly shaped plate or tubular parts to achieve reliable preheating. However, for some small, irregularly shaped parts with obvious surface undulations, there is still a lack of suitable preheating auxiliary devices. Due to their own shape limitations, these irregular parts are difficult to maintain a stable clamping and positioning posture, which affects the preheating effect of the welding end face, causing uneven heating and ultimately affecting the welding quality.

[0004] Therefore, in order to solve the above problems, we propose a welding preheating device. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides the following technical solution:

[0006] A welding preheating device includes a housing body, within which a heating component and a clamping component corresponding to the heating component are disposed for limiting and fixing an object to be processed. The clamping component includes a support platform for placing the object and fixed clamping ends and movable clamping ends located on opposite sides of the support platform. A linkage component is disposed between the support platform and the movable clamping ends. When force is applied to the support platform, the linkage component can drive the movable clamping ends to move closer to or away from the fixed clamping ends, thereby realizing the clamping and release of the object.

[0007] Furthermore, the outer shell body has a top wall and side walls extending downward along both sides of the top wall, and the support platform can move in and out of the inner shell body through sliding engagement with the side walls corresponding to each other on both sides.

[0008] Furthermore, the movable clamping end is provided with multiple sets of retractable elastic push rods on the side facing the fixed clamping end. The elastic push rods can adaptively extend and retract according to the contour of the object surface, thereby ensuring a tight fit with the object surface.

[0009] Furthermore, the clamping assembly also includes a support plate that can move relative to the support platform. The movable clamping end is hinged to the support plate. The support platform drives the movable clamping end to rotate around the hinge point with the support plate through the linkage assembly, thereby adjusting the distance between the movable clamping end and the fixed clamping end.

[0010] Furthermore, a swing arm is connected to one side of the movable clamping end, and the middle part of the swing arm is rotatably connected to the support plate near the support plate via a limiting seat.

[0011] Furthermore, a guide rod is connected to the bottom end of the support platform, and a through hole is provided on the support plate for the guide rod to pass through. The support platform adjusts its relative position with the support plate through the sliding fit between the guide rod and the through hole. An elastic element is also provided on the outer wall of the guide rod to keep the support platform in an elastic pre-tightened state.

[0012] Furthermore, the linkage component includes a first transmission member disposed on the support plate for driving the movable clamping end to rotate about the hinge point with the support plate, and a second transmission member disposed on the support platform for applying a driving force to the first transmission member.

[0013] Furthermore, the first transmission component includes a push rod connected to the bottom end of the swing arm on one side of the movable clamping end, and a driving block that drives the push rod to reciprocate. The surface of the driving block is provided with an inclined guide groove, and the protrusion at one end of the push rod is inserted into the guide groove. The push rod is driven to reciprocate through the guide groove of the driving block.

[0014] Furthermore, the second transmission component includes a pressing block that engages with the driving block in a transmission manner. The driving block is slidably engaged with the support plate via a connecting rod. The pressing block has a driving end face that abuts against the end of the connecting rod.

[0015] Furthermore, a locking assembly is provided between the lower pressure block and the support plate. The locking assembly includes a movable pin disposed on one side of the support plate and a connecting hole opened on the lower pressure block for insertion and removal limiting of the movable pin. The cooperation and locking of the support plate and the support platform are realized by the blocking and limiting of the movable pin and the connecting hole.

[0016] Beneficial effects

[0017] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0018] This invention achieves convenient clamping and release of objects by setting heating and clamping components inside the outer shell and using the linkage component between the support platform and the movable clamping end. When force is applied to the support platform, the linkage component can drive the movable clamping end to move closer to or away from the fixed clamping end, making the operation simple and efficient. At the same time, the multiple sets of retractable elastic top rods on the movable clamping end can adaptively extend and retract according to the surface contour of the object, ensuring a close fit with the surface of irregular objects. This effectively solves the problem of difficult stable clamping and positioning of irregular components that are small in size and have obvious surface undulations, and ensures the preheating effect of the welding end face. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a first-view schematic diagram of the clamping assembly of this utility model;

[0022] Figure 3 This is a second-view schematic diagram of the clamping assembly of this utility model;

[0023] Figure 4 This is a third-view schematic diagram of the clamping assembly of this utility model;

[0024] Figure 5 This is a side view of the clamping assembly of this utility model;

[0025] Figure 6 This is a schematic diagram showing the connection state of the drive block and push rod of this utility model;

[0026] Figure 7 This is a three-dimensional schematic diagram of the elastic push rod of this utility model.

[0027] Reference numerals: 1. Outer shell; 2. Heating assembly; 3. Clamping assembly; 301. Support plate; 302. Fixed clamping end; 303. Movable clamping end; 304. Support platform; 305. Connecting rod; 306. Guide rod; 307. Drive block; 308. Movable pin; 309. Push rod; 310. Elastic push rod; 311. Swing rod; 312. Pressing block. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] The present invention will be further described below with reference to the embodiments.

[0030] Please see the appendix Figure 1-7 A welding preheating device includes a housing body 1, which has a rectangular structure and a top wall and side walls extending downwards along both sides of the top wall. A heating component 2 is disposed on the top wall of the housing body 1. The heating component 2 is preferably an infrared heating tube, the power of which can be adjusted according to the material and thickness of the object to be welded to achieve precise preheating temperature control. In addition, other heating methods such as electromagnetic induction heating coils or hot air heating modules can also be used, which can be flexibly selected according to actual preheating requirements. At the bottom end of the housing body 1, corresponding to the top heating component 2, a clamping component 3 is disposed for limiting and fixing the object to be processed. The heating component 2 and the clamping component 3 are positioned relative to each other to ensure that the welding area of ​​the object to be processed faces the heat radiation range of the heating component 2 after it is clamped and fixed. Therefore, the heating component 2 and the clamping component 3 can also be disposed relative to each other on the front and back or left and right side walls of the housing body 1.

[0031] like Figure 2 , 3 As shown, the clamping assembly 3 includes a support platform 304 for placing an object, and a fixed clamping end 302 and a movable clamping end 303 located on both sides of the support platform 304. The fixed clamping end 302 and the movable clamping end 303 are preferably two parallel rectangular plates. The movable clamping end 303 has multiple sets of retractable elastic push rods 310 evenly distributed on the side of the plate facing the fixed clamping end 302. The elastic push rods 310 can adaptively extend and retract according to the surface contour of the object, thereby ensuring a tight fit with the surface of the object. A linkage assembly is provided between the support platform 304 and the movable clamping end 303. When the object to be processed is placed on the support platform 304, the object can be pressed down or force can be applied directly to the support platform 304. At this time, the support platform 304 drives the linkage assembly, which drives the movable clamping end 303 to move closer to or away from the fixed clamping end 302, thereby realizing the clamping and release of the object placed on the support platform 304.

[0032] like Figure 7As shown, a U-shaped limiting frame is fixed on the side of the movable clamping end 303 away from the fixed clamping end 302. An elastic push rod 310 passes through the side wall of the U-shaped limiting frame and the movable clamping end plate 303. A spring is sleeved on the outer wall of the elastic push rod 310 and a limiting ring is fixed thereon. The two ends of the spring abut against the limiting ring and the side wall of the U-shaped limiting frame, respectively. When the movable clamping end 303 drives the elastic push rod 310 to contact the surface of the workpiece to be processed, if there are protrusions or depressions on the surface of the workpiece, the elastic push rod 310 will extend and retract accordingly under the elastic action of the spring, so that the contact ends of each elastic push rod 310 can maintain contact with the surface of the workpiece, avoiding loosening of the clamping due to unevenness of the workpiece surface, thereby improving the clamping stability of irregularly shaped workpieces.

[0033] In addition to using rectangular plates, the fixed clamping end 302 and the movable clamping end 303 can also be designed as arc-shaped, V-shaped or other irregular structures according to the common shape of the object to be processed. For example, for tubular objects, the opposite surfaces of the fixed clamping end 302 and the movable clamping end 303 can be set as arc-shaped grooves that match the diameter of the pipe. When used with the elastic push rod 310, the clamping fit can be further improved.

[0034] like Figure 1 As shown, the support platform 304 moves in and out of the housing body 1 through a sliding fit with the side walls of the housing body 1 on both sides. Through the pull-out design, the operator can pull the support platform 304 out of the housing body 1 to facilitate the picking and placing of the object to be processed. After placement, the support platform 304 is pushed into the housing body 1 so that it is located directly below the heating component 2 for preheating.

[0035] The clamping assembly 3 also includes a support plate 301 that can move relative to the support table 304. Guide wheels are provided on both sides of the support plate 301, and slide rails are provided on the outer shell body 1 corresponding to the guide wheels on both sides of the support plate 301. Through the sliding cooperation between the guide wheels and the slide rails, the clamping assembly 3 can carry the workpiece into and out of the outer shell body 1 flexibly.

[0036] like Figure 4-6 As shown, a swing rod 311 is movably connected to one side of the movable clamping end 303. The swing rod 311 is a bent rod structure with a certain curvature. The hinge between the swing rod 311 and the movable clamping end 303 is an interference fit. The middle part of the swing rod 311 is rotatably connected to the support plate 301 near the support plate 301 through a limit seat. Through the hinge connection between the swing rod 311 and the support plate 301, when the support platform 304 moves relative to the support plate 301, one end of the swing rod 311 can be driven to rotate around the hinge with the support plate 301 through the linkage component, thereby adjusting the movable clamping end 303 located at the other end of the swing rod 311 to move closer to or further away from the fixed clamping end 302, so as to realize the adjustment of the distance between the two.

[0037] A guide rod 306 is connected to the bottom end of the support platform 304. The guide rod 306 is distributed at the four corners of the support platform 304 to facilitate the even distribution of pressure on the support platform 304. A through hole is provided on the support plate 301 for the guide rod 306 to pass through. The support platform 304 adjusts its relative position with the support plate 301 through the sliding fit between the guide rod 306 and the through hole. An elastic element is also provided on the outer wall of the guide rod 306 to keep the support platform 304 in an elastic pre-tight state. The elastic element is a spring sleeved on the outer wall of the guide rod 306. A limit ring is also fixed on the outer wall of the guide rod 306. The two ends of the spring abut against the limit ring and the support plate 301, respectively. In addition, a limit protrusion is fixed at the bottom end of the guide rod 306 on the support plate 301. The limit protrusion limits the maximum upward stroke of the support platform 304 to prevent it from detaching from the support plate 301. When an external force presses down on the support platform 304, the support platform 304 overcomes the elastic force of the spring and moves downward along the guide rod 306. When the external force is removed, the support platform 304 returns to its initial position under the reset action of the spring.

[0038] The linkage assembly includes a first transmission member disposed on the support plate 301 for driving the movable clamping end 303 to rotate about the hinge point with the support plate 301, and a second transmission member disposed on the support platform 304 for applying driving force to the first transmission member.

[0039] like Figure 6 As shown, the first transmission component includes a push rod 309 connected to the bottom end of a swing rod 311 on one side of the movable clamping end 303, and a drive block 307 that drives the push rod 309 to move back and forth. The end of the push rod 309 is hinged to the bottom end of the swing rod 311. The push rod 309 is slidably connected to the support plate 301. The surface of the drive block 307 is provided with an inclined guide groove. The drive block 307 is slidably engaged with the support plate 301 through connecting rods 305 fixed at both ends. The extension direction of the guide groove forms a preset angle with the setting direction of the connecting rod 305. The angle is preferably set at 45 degrees. A protrusion is formed at the end of the push rod 309 near the guide groove. The protrusion is inserted into the guide groove.

[0040] When the connecting rod 305 drives the drive block 307 to slide along the surface of the support plate 301, the guide groove will convert the longitudinal displacement of the drive block 307 into the lateral displacement of the push rod 309 perpendicular to the direction of movement of the connecting rod 305 through the sliding engagement with the protrusion. Then, the push rod 309 drives the swing rod 311 to rotate around its hinge with the support plate 301, and finally realizes the opening and closing action of the moving clamping end 303.

[0041] The connecting rod 305 is slidably connected to the support plate 301 via a connecting seat. The connecting seat is fixed to the surface of the support plate 301 and has a sliding hole inside that matches the connecting rod 305. To prevent the connecting rod 305 from deflecting during movement, a linear groove is provided along the axial direction on the surface of the connecting rod 305, and a guide protrusion that matches the linear groove is formed in the sliding hole. A return spring is also sleeved on the outer wall of the connecting rod 305 between two adjacent sets of connecting seats. One end of the return spring abuts against the connecting seat, and the other end is fixed to the outer wall of the connecting rod 305. The limiting rings of the wall abut against each other. In the initial state, the return spring pushes the limiting ring, so that the connecting rod 305 drives the driving block 307 to stay away from the push rod 309. At this time, the moving clamping end 303 is in an open state under the action of the swing rod 311, which is convenient for placing the object to be processed. When it is necessary to clamp and fix the object, the connecting rod 305 is driven by the second transmission component to overcome the elastic force of the return spring and move towards the push rod 309, thereby driving the driving block 307 to move and driving the push rod 309 to move through the guide groove.

[0042] like Figure 4 , 5 As shown, the second transmission component includes a lower pressure block 312 that is in transmission cooperation with the drive block 307. The lower pressure block 312 has a drive end face that abuts against the end of the connecting rod 305. The drive end face is an inclined slope of the drive block 307 near the connecting rod 305. The inclined slope is in contact with the movable wheel at the end of the connecting rod 305. In the initial state, the movable wheel at the end of the connecting rod 305 abuts against the lower position of the drive end face of the lower pressure block 312, and the moving clamping end 303 is in the open position. When the support platform 304 is subjected to downward pressure and drives the guide rod 306 to move downward, the support platform 304 drives the lower pressure block 312 to move downward synchronously. At this time, the inclined drive end face of the lower pressure block 312 and the movable wheel at the end of the connecting rod 305 are relatively squeezed. During the downward movement, the lower pressure block 312 will generate a horizontal thrust on the connecting rod 305, forcing the connecting rod 305 to overcome the elastic force of the return spring and drive the drive block 307 to move towards the push rod 309.

[0043] A locking assembly is also provided between the lower pressure block 312 and the support plate 301. The locking assembly includes a movable pin 308 located on one side of the support plate 301 and a connecting hole on the lower pressure block 312 for insertion and removal limiting of the movable pin 308. The locking of the support plate 301 and the support platform 304 is achieved by the blocking and limiting of the movable pin 308 and the connecting hole. A rectangular connecting frame extends from one side of the support plate 301. The movable pin 308 is slidably disposed on the side wall of the connecting frame, and its end facing the lower pressure block 312 has an inclined slope structure. Therefore, when the lower pressure block 312 moves down, it can push the movable pin 308 to retract until the connecting hole on the lower pressure block 312 is at the position of the movable pin 308. Correspondingly, at this time, the movable pin 308 is inserted into the connecting hole under the reset action of its own spring, fixing the support platform 304 and the support plate 301 relative to each other, so that the movable clamping end 303 and the fixed clamping end 302 maintain a relatively stable clamping state, preventing the object from loosening during the preheating process. After the preheating is completed, the operator can pull the movable pin 308 outward to disengage it from the connecting hole. At this time, the support platform 304 is reset upward under the action of the external spring of the guide rod 306. At the same time, the connecting rod 305 drives the drive block 307 to move back under the action of the reset spring. After the push rod 309 loses its thrust, the swing rod 311 drives the movable clamping end 303 to reset and open. At this time, the processed object can be taken out.

[0044] Working principle: First, the operator pulls the clamping assembly 3 out of the outer shell 1. At this time, the support platform 304 is in its initial high position under the action of the external spring of the guide rod 306. The moving clamping end 303 and the fixed clamping end 302 maintain a large gap and are in an open state. Then, the object to be preheated for welding is placed on the support platform 304, ensuring that the welding area of ​​the object is roughly facing the direction of the heating assembly 2. Then, the object to be processed can be pressed down or force can be applied directly to the support platform 304. The support platform 304 overcomes the elastic force of the external spring of the guide rod 306 and drives the guide rod 306 to move downward. During this process, the support platform 304 drives the lower pressure block 312 at its bottom to move downward synchronously. The inclined drive end face of the lower pressure block 312 presses the connecting rod 305, forcing the connecting rod 305 to overcome the elastic force of the return spring sleeved on its outer wall, and drive the drive block 307 fixedly connected to it to move closer to the push rod 309. The sliding mechanism allows the push rod 309 to slide relative to the protrusion at the end of the push rod 309 via the inclined guide groove on the drive block 307. This causes the push rod 309 to push the swing rod 311 to rotate around its hinge with the support plate 301. The rotation of the swing rod 311 causes the end connected to the movable clamping end 303 to move closer to the fixed clamping end 302, thus completing the clamping and fixing of the object. Then, the clamping assembly 3 is pushed into the housing body 1 so that the welding area of ​​the clamped object is facing the heat radiation range of the heating assembly 2. The heating assembly 2 is then started. After preheating, the operator uses heat-resistant gloves or other heat-insulating equipment to pull the clamping assembly 3 out of the housing body 1 and pulls the movable pin 308 outward to disengage it from the connection hole of the lower pressure block 312. At this time, the movable clamping end 303 returns to its initial open state, and the preheated object can be removed from the support platform 304.

[0045] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A welding preheating device, comprising a housing body (1), characterized in that: The outer shell body (1) is provided with a heating component (2) and a clamping component (3) corresponding to the heating component (2) for limiting and fixing the object to be processed. The clamping component (3) includes a support platform (304) for placing the object and a fixed clamping end (302) and a movable clamping end (303) located on both sides of the support platform (304) and corresponding to each other. A linkage component is provided between the support platform (304) and the movable clamping end (303). When force is applied to the support platform (304), the linkage component can drive the movable clamping end (303) to move closer to or away from the fixed clamping end (302), thereby realizing the clamping and release of the object.

2. The welding preheating device according to claim 1, characterized in that, The outer shell body (1) has a top wall and side walls extending downward along both sides of the top wall. The support platform (304) moves in and out of the inner shell body (1) through a sliding fit with the side walls corresponding to each other on both sides.

3. The welding preheating device according to claim 1, characterized in that, The movable clamping end (303) is provided with multiple sets of retractable elastic push rods (310) on the side facing the fixed clamping end (302). The elastic push rods (310) can adaptively extend and retract according to the contour of the object surface, thereby ensuring close contact with the object surface.

4. The welding preheating device according to claim 1, characterized in that, The clamping assembly (3) further includes a support plate (301) that can move relative to the support platform (304). The movable clamping end (303) is hinged to the support plate (301). The support platform (304) drives the movable clamping end (303) to rotate around the hinge point with the support plate (301) through the linkage assembly, thereby adjusting the distance between the movable clamping end (303) and the fixed clamping end (302).

5. The welding preheating device according to claim 4, characterized in that, A swing arm (311) is connected to one side of the movable clamping end (303). The middle part of the swing arm (311) is rotatably connected to the support plate (301) via a limiting seat near the support plate (301).

6. The welding preheating device according to claim 4, characterized in that, The bottom end of the support platform (304) is connected to a guide rod (306). The support plate (301) has a through hole for the guide rod (306) to pass through. The support platform (304) adjusts its relative position to the support plate (301) through the sliding fit between the guide rod (306) and the through hole. The outer wall of the guide rod (306) is also provided with an elastic element to keep the support platform (304) in an elastic pre-tight state.

7. The welding preheating device according to claim 4, characterized in that, The linkage component includes a first transmission member disposed on the support plate (301) for driving the movable clamping end (303) to rotate about the hinge point with the support plate (301), and a second transmission member disposed on the support platform (304) for applying driving force to the first transmission member.

8. The welding preheating device according to claim 7, characterized in that, The first transmission component includes a push rod (309) connected to the bottom end of a swing rod (311) on one side of the movable clamping end (303), and a drive block (307) that drives the push rod (309) to reciprocate. The surface of the drive block (307) is provided with an inclined guide groove. The protrusion at one end of the push rod (309) is inserted into the guide groove, and the push rod (309) is driven to reciprocate through the guide groove of the drive block (307).

9. The welding preheating device according to claim 8, characterized in that, The second transmission component includes a pressing block (312) that is in transmission engagement with the drive block (307). The drive block (307) is in sliding engagement with the support plate (301) via a connecting rod (305). The pressing block (312) has a driving end face that abuts against the end of the connecting rod (305).

10. The welding preheating device according to claim 9, characterized in that, A locking assembly is also provided between the pressing block (312) and the support plate (301). The locking assembly includes a movable pin (308) disposed on one side of the support plate (301) and a connecting hole opened on the pressing block (312) for insertion and removal limiting of the movable pin (308). The cooperation and locking of the support plate (301) and the support platform (304) are realized by the blocking and limiting of the movable pin (308) and the connecting hole.

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