A workpiece centering and fixing device specifically for a welding platform

Abstract

The present invention discloses a workpiece centering and fixing device specifically for a welding platform, which relates to the technical field of workpiece fixing. It includes a bottom plate, on the top of which columns are fixedly connected at equal intervals. The top of the columns is fixedly connected with a top plate. A workpiece centering and fixing device specifically for a welding platform further includes: a centering clamping mechanism and a continuous cooling mechanism. The continuous cooling mechanism is driven by the centering clamping mechanism. Through the settings of the centering clamping mechanism and the continuous cooling mechanism, the centering and fixing of the workpiece are completed simultaneously, improving the fixing effect of the workpiece and the efficiency of centering and fixing, enhancing the adaptability during the clamping of the workpiece, enabling the centering clamping mechanism to clamp workpieces with cylindrical or rectangular structures at the same time, and ensuring the stability during its clamping and fixing, preventing shaking or moving during the welding process, guaranteeing the welding quality, avoiding the operation of replacing the clamping parts due to the replacement of the workpiece, and saving time.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece fixing, and particularly to a workpiece centering and fixing device dedicated to a welding platform. Background Art

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. A welding platform is a working platform used for welding operations. When welding a workpiece to be welded, the workpiece needs to be fixed on a fixing device on the welding platform to ensure that the workpiece remains in a fixed position during the welding process.

[0003] When the existing fixing device is in use, since most of the clamping plates are flatly arranged, rectangular workpieces can be clamped. When the workpiece changes to a cylindrical arc-shaped workpiece, when the flat clamping plate clamps the arc surface, due to fewer contact points, the clamping of the cylindrical workpiece is not firm. During welding, the vibration generated may cause the cylindrical workpiece to displace and deviate from the center position of the welding platform, affecting the welding quality. Moreover, when fixing some cylindrical workpieces, the method of replacing the clamping parts may be used to fix the cylindrical workpieces, but it will waste a lot of time and affect the welding efficiency.

[0004] Therefore, a workpiece centering and fixing device dedicated to a welding platform is proposed to solve the above problems. Summary of the Invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide a workpiece centering and fixing device dedicated to a welding platform to solve the problem that when the existing fixing device is in use, when the flat clamping plate clamps the arc surface, due to fewer contact points, the clamping of the cylindrical workpiece is firm. During welding, the vibration generated may cause the cylindrical workpiece to displace and deviate from the center position of the welding platform, affecting the welding quality.

[0006] To achieve the above object, the present invention provides the following technical solution: A workpiece centering and fixing device dedicated to a welding platform, including a bottom plate, wherein columns are fixedly connected to the top of the bottom plate at equal intervals, and a top plate is fixedly connected to the top of the columns. The workpiece centering and fixing device dedicated to a welding platform further includes: a centering clamping mechanism and a continuous cooling mechanism, and the continuous cooling mechanism is driven by the centering clamping mechanism;

[0007] The centering clamping mechanism is used to fix and center the workpiece;

[0008] The continuous cooling mechanism is used to cool the workpiece after welding is completed.

[0009] Preferably, the centering clamping mechanism includes clamping rods which are slidably connected to the upper surface of the top plate at equal intervals. Rotating blocks are symmetrically and rotatably connected to one side of each clamping rod. Convex strips are fixedly connected to both ends of each rotating block, and the rotating blocks are C-shaped.

[0010] Preferably, connecting sliders penetrate and slide through the bottom of the top plate at equal intervals. The top of each connecting slider is fixedly connected to the adjacent clamping rod. Swing rods are symmetrically and rotatably connected to one side of each connecting slider. Guide columns are fixedly connected between the bottom plate and the top plate. Support rods are slidably connected to the outer surfaces of the guide columns, and the support rods are rotatably connected to the swing rods.

[0011] Preferably, a connecting plate is fixedly connected between the support rods. A driving cylinder is fixedly inserted into the top of the bottom plate. The output end of the driving cylinder is fixedly connected to the bottom of the connecting plate. A fixed rod is fixedly connected to the top of the bottom plate. An inclined plate is fixedly connected to the top of the fixed rod. Two guide ejector rods are fixedly connected to the top of the bottom plate. The tops of the guide ejector rods are arc-shaped. The guide ejector rods penetrate and slide through the connecting plate.

[0012] Preferably, two first spring telescopic rods and two second spring telescopic rods are fixedly connected to the top of the connecting plate respectively. A placement plate is rotatably connected to the top of the first spring telescopic rod, and the bottom of the placement plate abuts against the second spring telescopic rod.

[0013] Preferably, a pick-up slot is formed through the top of the top plate. The placement plate is slidably connected in the pick-up slot. Limiting strips are fixedly connected to the top of the bottom plate at equal intervals. The bottom of the limiting strips is in contact with the top of the placement plate. Guide shafts are rotatably connected to the upper surface of the inclined plate at equal intervals. Both ends of each guide shaft penetrate through both sides of the inclined plate, and fan blades are fixedly connected to both ends of each guide shaft. Collection holes are formed in the upper part of the inclined plate at equal intervals.

[0014] Preferably, the continuous cooling mechanism includes a conical groove which is uniformly formed in the pick-up slot. A blowing head is fixedly connected in the conical groove, and the blowing head is flat and fan-shaped.

[0015] Preferably, a linkage plate is fixedly connected to one side of the connecting plate. Guide grooves are formed on both sides of the linkage plate, and the guide grooves are wave-shaped. Support blocks are symmetrically and fixedly connected to the top of the bottom plate, and air cylinders are fixedly connected to the tops of the support blocks.

[0016] Preferably, pistons are slidably connected in the air cylinders respectively. One end of each piston is fixedly connected to a push-pull column. Guide sliding rods are fixedly inserted into the outer surfaces of the push-pull columns, and the guide sliding rods are slidably connected to the adjacent guide grooves.

[0017] Preferably, a one-way intake valve is fixedly connected to the outer surface of the inflator, a one-way outlet valve is fixedly connected to one end of the inflator, a connecting pipe is fixedly connected between the one-way outlet valves, an air outlet pipe is fixedly connected to one side of the connecting pipe, the air outlet pipe penetrates through the top plate, and the air outlet pipe is communicated with the blowing head.

[0018] Compared with the prior art, the present invention provides a workpiece centering and fixing device dedicated to a welding platform, having the following beneficial effects:

[0019] 1. Through the settings of the centering clamping mechanism and the continuous cooling mechanism, before the workpiece is welded, with the cooperation of the swing rod and the support rod, the connecting slider drives the clamping rod to approach the workpiece at the same time, so as to push the workpiece towards the center position between the four clamping rods, and then clamp the workpiece located at the center position of the four clamping rods, while completing the centering and fixing of the workpiece, improving the fixing effect and the efficiency of centering and fixing of the workpiece. After the workpiece is welded, with the cooperation of the guiding ejector rod, the first spring telescopic rod and the second spring telescopic rod, the placing plate completes the flipping and tilting work, and then under the action of gravity, the workpiece automatically separates from the upper surface of the placing plate and slides along the inclined plate to the designated position. At the same time, during the process of the workpiece separating from the placing plate, through the settings of the linkage plate and the guiding groove, with the cooperation of the guiding groove, the guiding slide rod, the piston and the inflator, the air flow is ejected from one end of the blowing head, so as to complete the cooling work of the workpiece during the descending process. Then, with the cooperation of the centering clamping mechanism and the continuous cooling mechanism, the taking and cooling of the workpiece are carried out simultaneously, avoiding the operation that the workpiece needs to be cooled first and then taken in the prior art, saving time, enabling the workpiece to quickly separate from the upper surface of the placing plate after welding, enabling the next workpiece to be placed on the upper surface of the placing plate faster and carrying out the centering clamping work, and improving the efficiency of the centering clamping work and the welding work of the workpiece;

[0020] In addition, through the cooperation of the centering clamping mechanism and the continuous cooling mechanism, workpieces with different shapes can be fixed through the cooperation between the clamping rod and the rotating block. At the same time, when the workpiece is welded, by driving the connecting plate to descend once, the work of releasing the fixation of the workpiece, cooling, automatic blanking and cleaning the welding slag can be completed simultaneously, improving the continuity of the workpiece welding, saving additional complex operations and time costs, being able to reduce the waiting time during the production process, and making the clamping and blanking work of the workpiece more efficient;

[0021] 2. When the centering clamping mechanism is in use, due to the rotational setting of the rotating block and the clamping rod and the C-shaped setting of the rotating block, when the convex strips at both ends of the C-shaped structure clamp the workpiece, the convex strips will be affected by the shape of the outer surface of the workpiece. After a reaction force is generated on the convex strips at both ends of the C-shaped structure, the convex strips drive the rotating block to rotate automatically and the convex strips adapt to the shape of the workpiece. As a result, multiple convex strips automatically fit tightly against the surface of the workpiece and clamp it. This avoids the situation in the prior art where when the workpiece changes from a rectangular shape to a cylindrical shape, the flat clamping parts cannot fit well against the surface of the workpiece, resulting in a reduced clamping effect on the workpiece due to fewer contact points. Thus, the adaptability during workpiece clamping is improved, enabling the centering clamping mechanism to clamp workpieces with cylindrical or rectangular structures simultaneously, while ensuring the stability during its clamping and fixing, preventing shaking or movement during the welding process, ensuring the quality of welding, and also avoiding the operation of replacing the clamping parts due to workpiece replacement, saving time and further improving the fixing and welding efficiency of the workpiece;

[0022] 3. When the continuous cooling mechanism is in use, due to the wavy setting of the guide groove on the linkage plate, when the linkage plate moves downward, the arc surface of the guide groove can push and guide the guide slide rod, causing the guide slide rod to drive the push-pull column and the piston to slide reciprocally. The piston continuously performs the pumping and pulling work in the air inflation cylinder, thereby completing the continuous blowing work of the blowing head. This ensures the continuity of the airflow blown out, enabling the outer surface of the workpiece to be continuously impacted by the airflow when the workpiece moves downward in the workpiece taking groove, thus accelerating the heat exchange efficiency between the workpiece and the external air and further improving the cooling effect on the workpiece;

[0023] 4. Due to the flat fan-shaped setting of the blowing head, when the airflow sprays out from the blowing head, since the channel from the air outlet pipe to the blowing head becomes narrower, the airflow is compressed. To maintain energy conservation, the speed of the airflow will increase at this time. The increased speed can further accelerate the airflow velocity on the surface of the workpiece, thereby further increasing the heat exchange speed between the workpiece and the external air, shortening the cooling time of the workpiece. At the same time, due to the fan-shaped setting of the blowing head, the end of the blowing head facing the workpiece is arc-shaped, so the arc-shaped nozzle can increase the flow range of the sprayed airflow, making the contact angle between the sprayed airflow and the workpiece larger, avoiding the situation of uneven cooling of the workpiece surface, and improving the uniformity during workpiece cooling;

[0024] 5. During the process of driving the workpiece to move downward by the placement plate, under the action of the guiding ejector rod, the placement plate automatically tilts. Then, under the influence of gravity, both the workpiece and the welding slag remaining on the placement plate during welding move onto the inclined plate. Then, due to the inclined setting of the inclined plate, the workpiece and the welding slag can slide from top to bottom. Then, with the cooperation of the guiding shaft, the fan blade, and the collection groove, the welding slag can automatically fall from the collection groove into the pre-placed collection box, and the workpiece will slide and pass through the guiding shaft. When passing through the guiding shaft, the friction between the workpiece and the guiding shaft drives the guiding shaft and the fan blade to rotate, further accelerating the cooling of the workpiece. At the same time, the cooling and the cleaning of the placement plate are carried out simultaneously, improving the efficiency. Moreover, through the cleaning of the placement plate, it can also prevent the existence of welding chips on the placement plate from affecting the flat placement of the workpiece. And due to the cooperation of the guiding ejector rod and the placement plate and the influence of gravity, no additional driving source needs to be installed for the cleaning and cooling work, thus saving electric power resources and reducing the cost of cleaning welding chips and cooling the workpiece;

[0025] 6. Due to the wavy setting of the guiding groove, since the wavy shape is composed of multiple arc grooves, the arc surface of the wavy groove squeezes the guiding slide rod, enabling the guiding slide rod to change direction more smoothly during reciprocating sliding in the wavy groove, reducing the friction between the guiding slide rod and the guiding groove, thereby extending the service life of the guiding slide rod and the guiding groove. At the same time, due to the arc-shaped setting at the top of the guiding ejector rod, when the guiding ejector rod pushes the placement plate to flip with the first spring telescopic rod, since the movement trajectory of the placement plate is arc-shaped during the flipping movement, the arc-shaped setting at the top of the guiding ejector rod can make the movement trajectory of the placement plate move along the arc-shaped structure at the top of the guiding ejector rod. This not only makes the flipping of the placement plate smoother but also makes the stress generated by the guiding ejector rod when lifting the placement plate more uniform, preventing wear at the bottom of the placement plate or the top of the guiding ejector rod due to excessive stress concentration, and improving the durability of the guiding ejector rod and the placement plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structure diagram of the present invention;

[0027] Figure 2 is the present invention Figure 1 partial top-down three-dimensional structure diagram;

[0028] Figure 3 is the present invention Figure 1 sectional structure diagram of the top plate;

[0029] Figure 4 is the present invention Figure 1 left three-dimensional structure diagram;

[0030] Figure 5 is the bottom three-dimensional structure diagram of the top plate of the present invention;

[0031] Figure 6 This is the three-dimensional structure diagram at the pick-up slot of the present invention;

[0032] Figure 7 For the present invention Figure 6 The enlarged structure diagram at position A in;

[0033] Figure 8 For the present invention Figure 4 The partial three-dimensional structure diagram in;

[0034] Figure 9 For the present invention Figure 8 The enlarged structure diagram at position B in;

[0035] Figure 10 For the present invention Figure 8 The partial three-dimensional structure diagram in.

[0036] In the figure:

[0037] 1. Bottom plate; 2. Column; 3. Top plate;

[0038] 4. Centering clamping mechanism; 401. Clamping rod; 402. Rotating block; 403. Ridge; 404. Connecting slider; 405. Swing rod; 406. Connecting plate; 407. Support rod; 408. Guide post; 409. Driving cylinder; 410. Limiting strip; 411. Fixed rod; 412. Inclined plate; 413. Guide ejector rod; 414. First spring telescopic rod; 415. Second spring telescopic rod; 416. Placing plate; 417. Pick-up slot; 418. Guide shaft; 419. Fan blade; 420. Collection hole;

[0039] 5. Continuous cooling mechanism; 501. Conical groove; 502. Blowing head; 503. Linking plate; 504. Guide groove; 505. Support block; 506. Inflatable cylinder; 507. Piston; 508. Push-pull column; 509. Guide slide bar; 510. One-way intake valve; 511. One-way exhaust valve; 512. Connecting pipe; 513. Outlet pipe. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] Next, the present invention will be further described in detail according to the drawings and embodiments.

[0042] Embodiments of the present invention

[0043] Please refer to Figures 1 to 6 as shown below:

[0044] To solve the problems mentioned in the technical solution, an embodiment of the present application provides a workpiece centering and fixing device dedicated to a welding platform, including a bottom plate 1. Columns 2 are fixedly connected to the top of the bottom plate 1 at equal intervals. A top plate 3 is fixedly connected to the top of the columns 2. A workpiece centering and fixing device dedicated to a welding platform further includes: a centering clamping mechanism 4 and a continuous cooling mechanism 5. The continuous cooling mechanism 5 is driven by the centering clamping mechanism 4;

[0045] The centering clamping mechanism 4 is used to fix and center the workpiece, and the continuous cooling mechanism 5 is used to cool the workpiece after welding is completed.

[0046] The centering clamping mechanism 4 includes clamping rods 401. The clamping rods 401 are slidably connected to the upper surface of the top plate 3 at equal intervals. Rotating blocks 402 are symmetrically rotatably connected to one side of each clamping rod 401. Convex strips 403 are fixedly connected to both ends of the rotating blocks 402. The rotating blocks 402 are arranged in a C shape. Connecting sliders 404 are slidably connected through the bottom of the top plate 3 at equal intervals. The top of the connecting sliders 404 is fixedly connected to the adjacent clamping rods 401. Swing rods 405 are symmetrically rotatably connected to one side of the connecting sliders 404. Guide columns 408 are fixedly connected between the bottom plate 1 and the top plate 3. Support rods 407 are slidably connected to the outer surfaces of the guide columns 408. The support rods 407 are rotatably connected to the swing rods 405;

[0047] A connecting plate 406 is fixedly connected between the support rods 407. A driving cylinder 409 is fixedly inserted into the top of the bottom plate 1. The output end of the driving cylinder 409 is fixedly connected to the bottom of the connecting plate 406. A fixing rod 411 is fixedly connected to the top of the bottom plate 1. An inclined plate 412 is fixedly connected to the top of the fixing rod 411. Two guide ejector rods 413 are fixedly connected to the top of the bottom plate 1. The tops of the guide ejector rods 413 are arranged in an arc shape. The guide ejector rods 413 are slidably connected through the connecting plate 406. Two first spring telescopic rods 414 and two second spring telescopic rods 415 are respectively fixedly connected to the top of the connecting plate 406. A placement plate 416 is rotatably connected to the top of the first spring telescopic rod 414. The bottom of the placement plate 416 abuts against the second spring telescopic rod 415. A workpiece taking slot 417 is opened through the top of the top plate 3. The placement plate 416 is slidably connected in the workpiece taking slot 417. Limit strips 410 are fixedly connected to the top of the bottom plate 1 at equal intervals. The bottom of the limit strips 410 is in contact with the top of the placement plate 416. Guide shafts 418 are rotatably connected to the upper surface of the inclined plate 412 at equal intervals. Both ends of the guide shafts 418 penetrate through both sides of the inclined plate 412. Fan blades 419 are fixedly connected to both ends of the guide shafts 418. Collection holes 420 are opened in the upper part of the inclined plate 412 at equal intervals;

[0048] Among them: By rotating the C-shaped rotating block 402, multiple convex strips 403 can act on the surface of the cylindrical workpiece at the same time, so that the multiple convex strips 403 clamp the cylindrical structure in an arc shape, increasing the clamping angle of the cylindrical workpiece and improving the clamping effect on the cylindrical structure.

[0049] In the prior art, when the existing fixing device is in use, since most of the clamping plates are arranged in a plane and can clamp rectangular workpieces, when the workpiece is changed into a cylindrical arc-shaped workpiece, when the flat clamping plate clamps the arc surface, due to fewer contact points, the clamping of the cylindrical workpiece is not firm. Compared with the prior art, the implementation of this embodiment simultaneously completes the centering and fixing of the workpiece, improves the fixing effect and the efficiency of centering and fixing of the workpiece, improves the adaptability during clamping of the workpiece, enables the centering clamping mechanism 4 to clamp workpieces with cylindrical or rectangular structures at the same time, and at the same time ensures the stability during its clamping and fixing, prevents shaking or moving during the welding process, ensures the welding quality, avoids the operation of replacing the clamping parts due to replacing the workpiece, and saves time.

[0050] Further embodiment: Please refer to Figures 4 to 10 as shown:

[0051] The continuous cooling mechanism 5 includes a conical groove 501, the conical groove 501 is uniformly opened in the picking groove 417, a blowing head 502 is fixedly connected in the conical groove 501, the blowing head 502 is set as a flat fan shape, a linkage plate 503 is fixedly connected to one side of the connecting plate 406, guide grooves 504 are opened on both sides of the linkage plate 503, the guide grooves 504 are set as wavy shapes, support blocks 505 are symmetrically and fixedly connected to the top of the bottom plate 1, an air charging cylinder 506 is fixedly connected to the top of each support block 505, a piston 507 is slidably connected in each air charging cylinder 506, a push-pull column 508 is fixedly connected to one end of each piston 507, a guide slide rod 509 is fixedly inserted on the outer surface of each push-pull column 508, the guide slide rod 509 is slidably connected to the adjacent guide groove 504, a one-way intake valve 510 is fixedly connected to the outer surface of the air charging cylinder 506, a one-way exhaust valve 511 is fixedly connected to one end of the air charging cylinder 506, a connecting pipe 512 is fixedly connected between the one-way exhaust valves 511, an air outlet pipe 513 is fixedly connected to one side of the connecting pipe 512, the air outlet pipe 513 penetrates through the top plate 3, and the air outlet pipe 513 is communicated with the blowing head 502;

[0052] Among them: Through the sector-shaped setting of the air blowing head 502, and the air blowing head 502 is flat, when the air flow sprays out from the air blowing head 502, since the channel becomes narrower from the air outlet pipe 513 to the air blowing head 502, the air flow is compressed. In order to maintain the conservation of energy, the speed of the air flow will increase at this time. And through the sector-shaped setting of the air blowing head 502, one end of the air blowing head 502 facing the workpiece is arc-shaped, so that the flow range of the sprayed air flow can be increased through the arc-shaped nozzle, thereby improving the range and effect of cooling the workpiece.

[0053] In the prior art, after the workpiece is welded, most of them need to be naturally cooled for a period of time first, and then manually removed. The efficiency is relatively low. Compared with the prior art, in the implementation of this embodiment, the workpiece picking and cooling work are carried out simultaneously, avoiding the operation that the workpiece needs to be cooled first and then picked up in the prior art, saving time, enabling the workpiece to quickly separate from the upper surface of the placement plate 416 after welding, and enabling the next workpiece to be placed on the upper surface of the placement plate 416 faster and centered and clamped, improving the efficiency of the workpiece centering and clamping work and the welding work.

[0054] The working principle of all the contents in the above embodiments is as follows:

[0055] In the initial state: The placement plate 416 is located in the picking slot 417, and the top just contacts the limiting strip 410. The workpiece is placed on the top of the placement plate 416. At this time, the first spring telescopic rod 414 and the second spring telescopic rod 415 are in a normal state.

[0056] The following is the working process of the centering and clamping mechanism 4 for fixing and centering the workpiece:

[0057] When it is necessary to clamp and fix the workpiece, the driving cylinder 409 can be started. The output end of the driving cylinder 409 pushes the connecting plate 406 to move upward. At this time, since the top of the placing plate 416 contacts the limiting strip 410, under the limitation of the limiting strip 410, the placing plate 416 cannot continue to slide upward in the picking slot 417. Therefore, the driving cylinder 409 will push the connecting plate 406 to slide upward, while the placing plate 416 no longer moves, and the first spring telescopic rod 414 and the second spring telescopic rod 415 enter the compressed state. When the connecting plate 406 slides upward, the connecting plate 406 drives the supporting rod 407 to slide upward simultaneously under the guidance of the guiding column 408, thereby pushing the swing rod 405 to move upward. Since the swing rod 405 is rotatably connected to both the supporting rod 407 and the connecting slider 404, and the connecting slider 404 is slidably connected to the top plate 3, under the action of the swing rod 405, the four connecting sliders 404 can be pushed to approach each other and move toward the workpiece, so that the rotating block 402 and the convex strip 403 move toward the workpiece, and the clamping and fixing of the workpiece are completed. Due to the arrangement of the supporting rod 407 and the swing rod 405, when the connecting plate 406 moves upward, under the cooperation of the swing rod 405 and the supporting rod 407, the connecting slider 404 and the clamping rod 401 can be pushed to move simultaneously from four directions, so that the workpiece on the placing plate 416 can be pushed to the center position of the placing plate 416 and fixed. This not only centers the workpiece but also improves the fixing effect of the workpiece during welding from multiple angles;

[0058] In addition, when the clamping rods 401 approach each other so that the rotating block 402 and the convex strip 403 clamp the workpiece, if the clamped workpiece is a flat rectangular workpiece, when the convex strip 403 presses the flat surface of the workpiece, the flat surface reacts with a thrust force on the convex strip 403, so that the convex strips 403 at both ends of the rotating block 402 are located on a straight line. Then, through the arrangement of the rotating blocks 402 and the convex strips 403, the rectangular flat workpiece can be clamped and fixed from multiple angles. And when the workpiece is replaced with a cylindrical structure, when the clamping rods 401 approach the cylindrical workpiece structure, since the surface of the cylindrical structure is arc-shaped, when the convex strip 403 presses the arc-shaped surface of the workpiece, the arc-shaped surface also reacts with a thrust force on the convex strip 403. Since the rotating block 402 is C-shaped, at this time, the arc surface of the workpiece will push the convex strip 403 at one end of the C-shaped structure of the rotating block 402, causing the rotating block 402 to rotate, and making the convex strip 403 at the other end of the rotating block 402 also fit the surface of the workpiece. Furthermore, when the clamping rods 401 approach each other and clamp the arc surface of the cylinder, through the rotation of the C-shaped rotating block 402, multiple convex strips 403 can act on the surface of the cylindrical workpiece simultaneously, so that multiple convex strips 403 clamp the cylindrical structure in an arc shape, increasing the clamping angle of the cylindrical workpiece and improving the clamping effect on the cylindrical structure;

[0059] Further, after the welding work on the workpiece is completed, the driving cylinder 409 can be activated to pull the connecting plate 406 downward. At this time, the first spring telescopic rod 414 and the second spring telescopic rod 415 will gradually return to their normal states. During this process, the placing plate 416 still contacts the limiting strip 410 and remains stationary. When the connecting plate 406 moves downward to the initial state, it simultaneously drives the support rod 407 downward. At this time, under the action of the swing rod 405, the connecting slider 404 and the clamping rod 401 can be pulled away from each other, so that the convex strip 403 and the rotating block 402 are disengaged from clamping the workpiece. Then, the driving cylinder 409 continues to pull the connecting plate 406 downward. Since the first spring telescopic rod 414 and the second spring telescopic rod 415 have returned to their normal states at this time, when the connecting plate 406 continues to move downward, the connecting plate 406 will drive the first spring telescopic rod 414, the second spring telescopic rod 415, and the placing plate 416 downward, so that the placing plate 416 drives the workpiece downward. The placing plate 416 disengages from the workpiece taking groove 417 and approaches the guiding ejector rod 413. Thus, through the jacking of the guiding ejector rod 413, the placing plate 416 is pushed to flip with the top of the first spring telescopic rod 414 as the center, so that the bottom of the placing plate 416 is disengaged from contact with the second spring telescopic rod 415. The flipped placing plate 416 changes from the horizontal state to the inclined state. Affected by gravity, the welded workpiece can slide on the placing plate 416 and slide onto the inclined plate 412, and then continue to slide from the inclined plate 412 to the designated position, so that the welded workpiece automatically disengages from the placing plate 416, improving the efficiency of workpiece conveying;

[0060] In addition, when the workpiece slides on the inclined plate 412, the friction between the bottom of the workpiece and the guiding shaft 418 will drive the guiding shaft 418 to rotate, and at the same time drive the fan blades 419 at both ends of the guiding shaft 418 to rotate. Through the rotation of the fan blades 419, the air flow on both sides of the inclined plate 412 can also be accelerated. Thus, when the workpiece slides downward from the inclined plate 412, the cooling effect of the workpiece is further improved. At the same time, after the workpiece is welded, some welding slag will fall onto the placing plate 416. The welding slag on its upper surface can also be poured onto the inclined plate 412 together through the inclined placing plate 416. At this time, when the welding slag slides down together with the workpiece, it will first fall into the collection hole 420. The staff can place a collection box at the bottom of the collection hole 420 in advance to collect the welding slag, thus improving the cleanliness around the inclined plate 412;

[0061] Please refer to the above working process Figures 1 to 6 。

[0062] The following is the working process of the continuous cooling mechanism 5 for cooling the welded workpiece:

[0063] Further, when the centering clamping mechanism 4 is in use, when the connecting plate 406 pulls the placing plate 416 to slide downward along the picking slot 417 through the first spring telescopic rod 414, the connecting plate 406 will simultaneously drive the linkage plate 503 to move downward. Due to the wavy setting of the guiding slot 504, the wavy arc surface will push the guiding slide rod 509 and make it move along the guiding slot 504, so that the guiding slide rod 509 drives the push-pull column 508 to reciprocate, and the push-pull column 508 drives the piston 507 to reciprocate. When the piston 507 approaches the one-way air outlet valve 511, the piston 507 compresses the volume of the air charging cylinder 506, so that the air pressure in the connecting plate 406 increases. The air flow passes through the one-way air outlet valve 511, the connecting pipe 512 and the air outlet pipe 513 in the air charging cylinder 506, and then blows out from the air blowing head 502. The air flow blown out through the air blowing head 502 can act on the workpiece on the descending placing plate 416, so as to accelerate the flow speed of the air flow on the surface of the workpiece, accelerate the heat exchange speed between the workpiece and the external air after welding, make the cooling speed of the workpiece faster, and can enter the next process faster. And when the piston 507 moves away from the one-way air outlet valve 511, the volume of the air charging cylinder 506 begins to increase. At this time, the external air can enter the air charging cylinder 506 from the one-way air inlet valve 510. Furthermore, in the process of the guiding slot 504 driving the push-pull column 508 to reciprocate, through the cooperation of the piston 507 and the air charging cylinder 506, the air flow continuously blows out from the air blowing head 502, so as to continuously cool the descending workpiece;

[0064] In addition, through the fan-shaped setting of the air blowing head 502 and the flat shape of the air blowing head 502, when the air flow blows out from the air blowing head 502, since the channel from the air outlet pipe 513 to the air blowing head 502 becomes narrower, the air flow is compressed. In order to maintain energy conservation, the speed of the air flow will increase at this time. And through the fan-shaped setting of the air blowing head 502, one end of the air blowing head 502 facing the workpiece is arc-shaped, so that the flowing range of the blown air flow can be increased through the arc-shaped nozzle, and thus the range and effect of cooling the workpiece are improved;

[0065] Please refer to the above working process Figures 4 to 10 。

[0066] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0067] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A workpiece centering and fixing device specifically for a welding platform, comprising a bottom plate (1), wherein columns (2) are fixedly connected to the top of the bottom plate (1) at equal intervals, and a top plate (3) is fixedly connected to the top of the columns (2), characterized in that, The workpiece centering and fixing device specifically for a welding platform further includes: a centering clamping mechanism (4) and a continuous cooling mechanism (5), and the continuous cooling mechanism (5) is driven by the centering clamping mechanism (4); The centering clamping mechanism (4) is used to fix and center the workpiece; The continuous cooling mechanism (5) is used to cool the workpiece after welding; The centering clamping mechanism (4) includes clamping rods (401), and the clamping rods (401) are slidably connected to the upper surface of the top plate (3) at equal intervals. Rotating blocks (402) are symmetrically rotatably connected to one side of each clamping rod (401). Convex strips (403) are fixedly connected to both ends of the rotating block (402), and the rotating block (402) is arranged in a C shape; Connecting sliders (404) are slidably connected through the bottom of the top plate (3) at equal intervals. The top of the connecting slider (404) is fixedly connected to the adjacent clamping rod (401). Swing rods (405) are symmetrically rotatably connected to one side of the connecting slider (404). Guide columns (408) are fixedly connected between the bottom plate (1) and the top plate (3). Support rods (407) are slidably connected to the outer surface of the guide column (408), and the support rod (407) is rotatably connected to the swing rod (405); A connecting plate (406) is fixedly connected between the support rods (407). A driving cylinder (409) is fixedly inserted into the top of the bottom plate (1), and the output end of the driving cylinder (409) is fixedly connected to the bottom of the connecting plate (406). A fixed rod (411) is fixedly connected to the top of the bottom plate (1), and an inclined plate (412) is fixedly connected to the top of the fixed rod (411). Two guide ejector rods (413) are fixedly connected to the top of the bottom plate (1), and the top of the guide ejector rod (413) is arc-shaped. The guide ejector rod (413) is slidably connected through the connecting plate (406); Two first spring telescopic rods (414) and two second spring telescopic rods (415) are respectively fixedly connected to the top of the connecting plate (406). A placement plate (416) is rotatably connected to the top of the first spring telescopic rod (414), and the bottom of the placement plate (416) abuts against the second spring telescopic rod (415); A pick-up slot (417) is formed through the top of the top plate (3). The placement plate (416) is slidably connected in the pick-up slot (417). Limiting strips (410) are fixedly connected to the top of the bottom plate (1) at equal intervals, and the bottom of the limiting strip (410) is in contact with the top of the placement plate (416). Guide shafts (418) are rotatably connected to the upper surface of the inclined plate (412) at equal intervals. Both ends of the guide shaft (418) penetrate through both sides of the inclined plate (412), and fan blades (419) are fixedly connected to both ends of the guide shaft (418). Collection holes (420) are formed through the upper part of the inclined plate (412) at equal intervals; The continuous cooling mechanism (5) includes a conical groove (501), the conical groove (501) is uniformly arranged in the picking slot (417), a blowing head (502) is fixedly connected in the conical groove (501), and the blowing head (502) is arranged in a flat fan shape; One side of the connecting plate (406) is fixedly connected with a linkage plate (503), guide grooves (504) are arranged on both sides of the linkage plate (503), the guide grooves (504) are arranged in a wavy shape, support blocks (505) are symmetrically and fixedly connected to the top of the bottom plate (1), and air cylinders (506) are fixedly connected to the tops of the support blocks (505); A one-way intake valve (510) is fixedly connected to the outer surface of the air cylinder (506), a one-way exhaust valve (511) is fixedly connected to one end of the air cylinder (506), a connecting pipe (512) is fixedly connected between the one-way exhaust valves (511), an air outlet pipe (513) is fixedly connected to one side of the connecting pipe (512), the air outlet pipe (513) penetrates through the top plate (3), and the air outlet pipe (513) is communicated with the blowing head (502); Pistons (507) are slidably connected in the air cylinders (506), push-pull columns (508) are fixedly connected to one ends of the pistons (507), guide sliding rods (509) are fixedly inserted on the outer surfaces of the push-pull columns (508), and the guide sliding rods (509) are slidably connected with the adjacent guide grooves (504).

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