A weld grinding device for radiator processing

Abstract

The present invention relates to the technical field of grinding devices, and specifically discloses a weld grinding device for radiator processing, comprising a grinding block and a motion device for controlling the grinding block to grind along the weld, the motion device comprising: an upper clamping plate and a lower clamping plate, both ends of which are rotatably mounted with rollers that can stick to pipe fittings; a clamping assembly, used to control the movement of the upper clamping plate and the lower clamping plate to make the rollers stick to or loosen the pipe fittings; two limit assemblies, respectively arranged on the front and rear sides of the upper clamping plate, the limit assemblies comprising a limit plate that can stick to a fin and a control assembly for controlling the front and rear movement of the limit plate, the limit assembly and the clamping assembly ensure that the grinding block only contacts the weld, thereby avoiding damage to the fin, and applying pressure to the grinding block through an elastic member to ensure that the grinding block sticks to the weld, and under the restriction of the limit plate, avoiding excessive grinding of the grinding block to cause damage to the weld and the heat sink.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, and in particular to a weld grinding device for radiator processing. Background Art

[0002] The typical structure of a finned heat sink is to weld or nest multiple heat sinks (fins) on the outer surface of a base tube (usually a round tube) to increase the heat dissipation surface area and improve the heat exchange efficiency. The current industry generally adopts the manufacturing process of welding aluminum or copper fins on the outer surface of a round tube, but it is limited by the inherent defects of the welding process and the lack of subsequent processing technology, resulting in severe challenges to the performance and reliability of the heat sink. Welding slag, unevenness or oxide layer may be generated during the welding process. These defects will increase thermal resistance and affect the conduction of heat from the base tube to the fin. Grinding can make the contact surface smoother and improve the heat conduction efficiency. The unevenness or sharp edges at the weld are prone to stress concentration, leading to cracks or fatigue failure. Grinding can smooth the transition area, reduce stress concentration, and extend the life of the radiator, so the weld between the fin and the tube needs to be polished.

[0003] The Chinese patent document with the authorization announcement number CN113458904B discloses a weld grinding device, which belongs to the technical field of metal product grinding processing. A weld grinding device includes a grinding frame and a handle, the grinding frame includes a hinged first arc frame and a second arc frame, the first arc frame and the second arc frame are both provided with an arc slide, the two arc slides are respectively slidably mounted with a first arc block and a second arc block, the first arc block and the second arc block can be connected by a locking mechanism to form a slider that matches the annular slide, and the slider is provided with a plurality of grinding components for grinding the weld of a circular tube.

[0004] Due to the small spacing between the fins, the existing handheld grinding device cannot easily enter between the fins, and because the weld is arc-shaped, it is not convenient to accurately position it during manual grinding, which will lead to uneven grinding. When the existing automated equipment is used for grinding, since there will be some deviation in the welding spacing between the fins, it is impossible to accurately position the position of each weld, which may also cause deviations in grinding, or reposition the next weld after grinding one weld. When using the solution provided in the above patent document to grind the weld, although it can be put on the pipe fitting, it is not convenient to control the degree of grinding of the weld by the grinding assembly, so the fins are easily worn, and therefore there are problems in use. Summary of the invention

[0005] The present invention provides a weld grinding device for radiator processing, aiming to solve the problem in the related art that the grinding device is inconvenient to enter between fins and easily wears the fins.

[0006] A weld grinding device for radiator processing, comprising a grinding block and a motion device for controlling the grinding block to grind along the weld, the motion device comprising:

[0007] The upper clamping plate and the lower clamping plate, both ends of which are rotatably mounted with rollers capable of abutting against the pipe fittings;

[0008] The clamping assembly is used to control the movement of the upper clamping plate and the lower clamping plate so that the rollers can be pressed against or loosened from the pipe fittings;

[0009] Two limit assemblies are respectively arranged on the front and rear sides of the upper clamping plate, and the limit assemblies include a limit plate that can be attached to the fin and a control assembly for controlling the front and rear movement of the limit plate;

[0010] Two clamping assemblies are respectively installed on the front and rear sides of the upper clamping plate. The clamping assemblies include a slide seat and an elastic member that can slide forward and backward relative to the upper clamping plate. The grinding block is fixedly installed on the slide seat. The elastic member is used to apply pressure in the front and rear directions to the grinding block so that the grinding block is close to the weld. When the slide seat abuts against the limit plate, the grinding block is located between the two fins and does not contact the fins.

[0011] The driving seat is used to control the upper clamping plate and the lower clamping plate to swing back and forth with the axis of the pipe fitting as the rotation axis.

[0012] The effect is as follows: the upper clamp and the lower clamp move toward the pipe fitting, so that the pipe fitting is located between the upper clamp and the lower clamp, and then the clamping assembly controls the upper clamp and the lower clamp to perform a clamping action, so that all rollers are close to the pipe fitting, thereby limiting the position of the upper clamp and the lower clamp relative to the pipe fitting, so that the upper clamp and the lower clamp can only rotate relative to the pipe fitting and move along the length direction of the pipe fitting, and then the limit assembly is used to limit the freedom of movement of the upper clamp and the lower clamp along the length direction of the pipe fitting, and the pressing assembly is used to make the grinding block only move in the front-rear direction relative to the upper clamp and the lower clamp, and at the same time, a force is applied to the grinding block away from the upper clamp. The thrust is applied to make the grinding block close to the weld, and the position of the grinding block can be accurately controlled to ensure that the grinding block only contacts the weld and not the fins (heat sink), thereby avoiding damage to the fins. The limit assembly is abutted against the fins through rollers to ensure that the grinding block does not move excessively during the grinding process, thereby avoiding excessive grinding or accidental damage to the fins. Since there may be slight differences in the distance between the fins, the device can adapt to fins of different spacings through the cooperation of the limit plate and the clamping assembly, ensuring that the grinding block is always located between the two fins and does not contact the fins, thereby improving the versatility and adaptability of the device.

[0013] Preferably, the clamping assembly includes a mounting seat, one end of the upper clamp and the lower clamp are rotatably mounted on the mounting seat, and the hinges of the upper clamp and the lower clamp are fixedly connected with gears that are colinear with their rotation axes, the two gears are meshed, and a driving member for controlling the rotation of the upper clamp or the lower clamp relative to the mounting seat is installed on the fixed seat. The rotation of the upper clamp is controlled by the driving member, and then the lower clamp can be synchronously rotated in the opposite direction through gear transmission, thereby enabling the upper clamp and the lower clamp to clamp or loosen the pipe fittings.

[0014] Preferably, the driving member is a pneumatic rod, the two ends of which are respectively hinged to the fixed seat and the upper clamping plate. The pneumatic rod is controlled to extend or contract through an external pneumatic system, and the upper clamping plate is controlled to rotate away from the fixed seat or toward the fixed seat, thereby loosening or clamping the upper clamping plate and the lower clamping plate.

[0015] Preferably, a roller is rotatably installed on the side of the limit plate that is in contact with the fin, and a sliding rod slidably installed with the upper clamping plate is fixedly installed on the other side of the limit plate. When the control component controls the limit plate to be close to the fin, the roller contacts the fin. When the upper clamping plate and the lower clamping plate rotate relative to the pipe fitting, the roller rotates and revolves around the axis of the pipe fitting as the rotation axis, thereby reducing the resistance encountered by the limit plate during reciprocating rotation through the roller, and at the same time preventing the fin from being worn due to large friction.

[0016] Preferably, the control component is a pneumatic cylinder, a driving source of the pneumatic cylinder is connected to the sliding rod, and the pneumatic cylinder is controlled by an external pneumatic system to extend or retract the sliding rod.

[0017] Preferably, the grinding block is in an arc shape, which is used to adapt to the shape of the weld in the length direction, thereby increasing the contact area with the weld and making the grinding effect more uniform.

[0018] Preferably, the number of the grinding blocks is four, with two in each group, and the two grinding blocks in the same group are respectively located on the left and right sides of the limit plate. The two groups of grinding blocks can be used to grind the two welds between the fins at one time, and the two grinding blocks in each group are symmetrically arranged, which can reduce the swing amplitude of the upper clamping plate and the lower clamping plate. A whole weld can be polished with a smaller swing amplitude, and the limit plate can be prevented from separating from the fins.

[0019] Preferably, a slide rail is provided on the back of the grinding block, and a slide groove matched with the slide rail is provided on the slide seat, and the bottom end of the slide groove extends to the bottom surface of the slide seat. The grinding block is installed on the slide seat through the cooperation of the slide rail and the slide groove, and can be easily disassembled and replaced, thereby extending the service life of the device.

[0020] Preferably, when the roller is pressed against the pipe, there is a gap between the grinding block and the pipe, so that the grinding block can avoid contact with the pipe when moving relative to the upper clamping plate, thereby avoiding mutual friction between the grinding block and the pipe.

[0021] Preferably, the slide seat and the upper clamping plate are slidably connected via guide rails and guide rods, and the middle part of the slide seat can be abutted against the inner side of the limit plate. When the roller is in contact with the fin, and the slide seat is in contact with the limit plate, there is a gap between the grinding block and the fin, thereby avoiding excessive grinding and scratching of the fin.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0023] 1. Control the freedom of movement of the upper and lower clamps through the clamping device and the limit assembly, so that the upper and lower clamps can only rotate relative to the pipe fittings. Then, the position of the grinding block can be accurately controlled through the limit assembly and the clamping assembly to ensure that the grinding block only contacts the weld and not the fins, thereby avoiding damage to the fins. Apply pressure to the grinding block through elastic parts (such as compression springs) to ensure that the grinding block is always close to the weld. At the same time, under the restriction of the limit plate, avoid excessive grinding of the grinding block to prevent damage to the weld and heat sink.

[0024] 2. The clamping assembly completes the clamping action by controlling the upper clamping plate and the lower clamping plate, and then makes the rollers contact with the pipe fittings through the rollers installed at both ends of the upper clamping plate and the lower clamping plate, thereby completing the fixation of the pipe fittings and reducing the friction resistance of the device when it swings back and forth along the axis of the pipe fittings.

[0025] 3. The driving seat controls the upper and lower clamping plates to swing back and forth with the axis of the pipe fitting as the rotation axis. The limit plate limits the front and rear movement of the upper and lower clamping plates, so that the grinding block can grind the weld evenly, improving the efficiency and quality of grinding and ensuring the flatness and smoothness of the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front view of the present invention when grinding the weld.

[0027] Figure 2 This is a top view of the present invention when grinding the weld.

[0028] Figure 3 It is a front view of the clamping assembly in the present invention.

[0029] Figure 4 It is a top view of the upper splint in the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of the clamping assembly in the present invention.

[0031] Figure 6 It is a schematic diagram of the explosion structure of the limiting component in the present invention.

[0032] Figure 7 It is a front view of the limiting plate and the roller in the present invention.

[0033] Reference numerals:

[0034] 1. Moving device; 11. Upper clamping plate; 12. Lower clamping plate; 13. Clamping assembly; 131. Mounting seat; 132. Gear; 133. Pneumatic rod; 14. Limiting assembly; 141. Limiting plate; 142. Roller; 143. Sliding rod; 144. Pneumatic cylinder; 15. Clamping assembly; 151. Sliding seat; 152. Elastic member; 16. Driving seat; 161. Swing arm; 2. Grinding block. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] like Figure 1-Figure 6 As shown, a weld grinding device for radiator processing includes a motion device 1 and a grinding block 2. The motion device 1 is used to control the grinding block 2 to enter between the fins, and then make the grinding block 2 stick to the weld, and then control the grinding block 2 to swing back and forth with the axis of the pipe as the rotation axis, so that the grinding block and the weld are relatively rubbed, so that the weld assembly is polished smooth and flat.

[0037] like Figure 1 and Figure 3 As shown, the motion device 1 includes: an upper clamping plate 11, a lower clamping plate 12, a clamping assembly 13, two limit assemblies 14, two clamping assemblies 15, and a driving seat 16. The grinding block 2 is installed on the upper clamping plate 11. The clamping assembly 13 controls the upper clamping plate 11 and the lower clamping plate 12 to clamp the pipe fitting, thereby limiting the position of the upper clamping plate 11 and the lower clamping plate 12 relative to the pipe fitting, so that the upper clamping plate 11 and the lower clamping plate 12 can only rotate relative to the pipe fitting and move along the length direction of the pipe fitting. The clamping assembly 15 allows the grinding block 2 to only move in the front-rear direction relative to the upper clamping plate 11 and the lower clamping plate 12, and at the same time, a thrust is applied to the grinding block 2 away from the upper clamping plate 11. , so that the grinding block 2 is in contact with the weld, and then the driving seat 16 drives the upper clamping plate 11 and the lower clamping plate 12 to swing back and forth with the axis of the pipe as the rotation axis, so as to grind the weld, and at the same time the clamping assembly 15 applies pressure toward the weld to the clamping block, and the limit assembly 14 limits the movement distance of the grinding block 2. The position of the grinding block 2 is accurately controlled by the limit assembly 14 and the clamping assembly 15 to ensure that the grinding block 2 only contacts the weld but not the fins, thereby avoiding damage to the fins, and applying pressure to the grinding block 2 to ensure that the grinding block 2 is always in contact with the weld, avoiding excessive grinding of the grinding block 2, and preventing damage to the weld and the heat sink.

[0038] The upper clamping plate 11 and the lower clamping plate 12 are arc-shaped, and rollers that can stick to the pipe fittings are rotatably installed at both ends. The outer circumferential surface of the roller is a cylindrical surface to prevent the roller from tilting, and anti-slip grooves are provided on the outer circumferential surface of the roller to increase the friction between the roller and the pipe fitting and prevent the roller from sliding back and forth relative to the pipe fitting. The four rollers are close to each other so that the four rollers are in contact with the pipe fitting, thereby clamping the pipe fitting, limiting the freedom of the upper clamping plate 11 and the lower clamping plate 12 so that the upper clamping plate 11 and the lower clamping plate 12 can only rotate relative to the pipe fitting, and the rollers reduce the resistance encountered by the upper clamping plate 11 and the lower clamping plate 12 when they swing back and forth along the axis of the pipe fitting.

[0039] like Figure 3-Figure 6 As shown, the clamping assembly 13 includes a mounting seat 131, two sets of gears 132, and a pneumatic rod 133. The left ends of the upper clamp plate 11 and the lower clamp plate 12 are rotatably mounted on the mounting seat 131. The two sets of gears 132 are respectively located on the front and rear sides of the clamp plate. There are two gears 132 in each set of gears 132 and they mesh with each other. The two gears 132 are coaxially fixed on the axes of the upper clamp plate 11 and the lower clamp plate 12, respectively. The two ends of the pneumatic rod 133 are respectively hinged to the fixing seat and the upper clamp plate 11. The rotation of the upper clamp plate 11 is controlled by the extension and retraction of the pneumatic rod 133. The rotation of the upper clamp plate 11 is transmitted through the gear 132 to make the lower clamp plate 12 rotate in the opposite direction, so that the upper clamp plate 11 and the lower clamp plate 12 rotate synchronously in different directions, which is used to make the roller close to or loosen the pipe fitting.

[0040] The two limiting components 14 are respectively arranged on the front and rear sides of the upper clamping plate 11, and the limiting components 14 include: a limiting plate 141, a roller 142 and a control component. The roller 142 is rotatably mounted on the outer surface of the limiting plate 141. The outer side of the roller 142 can abut against the fin, and the shape of the roller 142 is conical, so that the linear speed of the roller 142 close to the axis of the pipe and the other end away from the axis are different when rotating, so as to avoid sliding friction between the roller 142 and the fin. The axis of the roller 142 intersects with the axis of the pipe (such as Figure 7 As shown), on the front projection plane, the axis of the roller 142 is perpendicular to the axis of the pipe. When the grinding block 2 enters between the fins, the control component makes the roller 142 abut against the fins to position them and prevent the upper clamping plate 11 and the lower clamping plate 12 from moving in the front-to-back direction.

[0041] The control component includes a sliding rod 143 and a pneumatic cylinder 144. The pneumatic cylinder 144 is installed in the upper clamping plate 11. The pneumatic cylinder 144 has two output ends, which are respectively located on the front and rear sides. A sliding rod 143 is installed on the output end. The number of sliding rods 143 is at least two, and preferably four in the figure. The sliding rod 143 passes through the upper clamping plate 11 and is connected to the limit plate 141, so that the sliding rod 143 is controlled to slide by the pneumatic cylinder 144, so that the limit plate 141 is against or separated from the fin.

[0042] The two clamping assemblies 15 are respectively arranged on the front and rear sides of the upper clamping plate 11. The clamping assembly 15 includes a slide 151 and an elastic member 152. The side of the slide 151 close to the pipe is an arc surface and is coaxial with the arc formed by the upper clamping plate 11. A guide rod is fixedly installed on the inner side of the slide 151. Guide rails matching the guide rod are provided on the front and rear sides of the upper clamping plate 11, so that the slide 151 can slide in the front and rear directions relative to the upper clamping plate 11. The elastic member 152 is preferably a compression spring, which is installed between the slide 151 and the upper clamping plate 11, so as to apply an elastic force to the slide 151 away from the upper clamping plate 11. A through hole is provided in the middle of the slide 151 for the slide rod 143 to pass through, so that the sliding range of the slide 151 is limited by the upper clamping plate 11 and the limit plate 141.

[0043] The grinding surface of the grinding block 2 is an inclined surface, so that the weld after grinding has a chamfered transition shape. The number of grinding blocks 2 is four, two in a group, and the two grinding blocks 2 in the same group are respectively located on the left and right sides of the limit plate 141 (such as Figure 3 As shown in the figure, a slide rail is arranged on the inner side of the grinding block 2, and a slide groove matched with the slide rail is opened on the slide seat 151, and the bottom end of the slide groove extends to the bottom surface of the slide seat 151, and there is a large damping force between the slide groove and the slide rail (for example, a protrusion is arranged on the slide rail, and a depression is arranged in the slide groove. When the slide rail is fully inserted into the slide groove, the protrusion enters the depression), thereby preventing the grinding block 2 from falling off by itself. When the grinding block 2 is severely worn, it can slide downward to remove the old grinding block 2. The grinding block 2 is installed on the slide seat 151 through the cooperation of the slide rail and the slide groove, and can be easily disassembled and replaced, thereby extending the service life of the device and facilitating maintenance and care.

[0044] When the roller is close to the pipe, there is a gap between the grinding block 2 and the pipe (the width of the gap is between 1mm-2mm), thereby avoiding scratches between the grinding block 2 and the pipe. When the roller 142 is in contact with the fin and the slide seat 151 is in contact with the limit plate 141, there is also a gap between the grinding block 2 and the fin (the width of the gap is between 1mm-2mm), thereby avoiding excessive grinding and scratches on the fin.

[0045] The driving end of the driving seat 16 is connected to the mounting seat 131 through a swing arm 161. The driving end of the driving seat 16 swings back and forth with the axis of the pipe fitting as the rotation axis, and the swing amplitude is between 45°-60°, so as to avoid the grinding block 2 being completely separated from the weld due to excessive swing amplitude. The driving seat 16 controls the upper clamping plate 11 and the lower clamping plate 12 to swing back and forth with the axis of the pipe fitting as the rotation axis, and limits the front and rear movement of the upper clamping plate 11 and the lower clamping plate 12 through the limit plate 141, so that the grinding block 2 can grind the weld evenly, thereby improving the efficiency and quality of grinding and ensuring the flatness and smoothness of the weld.

[0046] In order to move the drive seat 16, a sliding device is installed on the ground. The sliding device is preferably a track sliding device, including an X-axis track arranged on the ground along the front-to-back direction, a traveling vehicle is installed on the X-axis track, and a Y-axis track perpendicular to the X-axis track is installed on the traveling vehicle. The drive seat 16 is installed on the Y-axis track and can move along the Y-axis track. The Y-axis track is used to control the drive seat 16 to move in the left and right directions, and the X-axis track is used to control the drive seat 16 to move in the front-to-back direction, so that the drive seat 16 moves on the horizontal plane, so that the clamping assembly 13 disengages from or enters between the fins.

[0047] The workflow includes the following steps:

[0048] Step 1: fix the fin-tube assembly to be polished (the fixing device for fixing the assembly is not shown in the figure, and the fixing device can be a hoisting device or a clamping positioner), and the sliding device controls the driving seat 16 to move so that the upper clamping plate 11 enters the space between the fins, and the tube is located between the upper clamping plate 11 and the lower clamping plate 12;

[0049] Step 2: Start the pneumatic rod 133, which extends to make the upper clamping plate 11 and the lower clamping plate 12 rotate synchronously in the direction close to the pipe fitting until the rollers on the upper clamping plate 11 and the lower clamping plate 12 abut against the pipe fitting, thereby completing the clamping positioning;

[0050] Step 3: Start the pneumatic cylinder 144 to slide the slide rod 143 outward until the rollers 142 on the two limit plates 141 respectively abut against the two fins, thereby locating the position of the weld;

[0051] Step 4: Release the elastic force of the compression spring to make the grinding block 2 abut against the weld;

[0052] Step 5: Start the driving seat 16 to make the swing arm 161 carry the clamping assembly 13, the upper clamping plate 11 and the lower clamping plate 12 to swing back and forth with the axis of the pipe as the rotation axis, and the grinding block 2 rubs against the weld, thereby grinding the weld;

[0053] Step 6: When the slide seat 151 is in contact with the limit plate 141, the grinding is completed and the drive seat 16 stops;

[0054] Step 7: The pneumatic rod 133 is shortened to separate the upper clamping plate 11 and the lower clamping plate 12 from the pipe fitting, and the sliding device controls the driving seat 16 to slide on the horizontal plane, so that the upper clamping plate 11 enters the space between adjacent fins to continue welding seam grinding.

[0055] After the fins are welded to the pipe fittings, the welds at the front and rear ends can be polished using ordinary equipment. Since the distances between the fins are slightly different, when the welds are polished using the above steps, the fins are positioned by the limit plate 141, and then the welds are polished using the polishing block 2. This can avoid defects caused by different degrees of polishing. By polishing the welds, the transition area can be smoothed, stress concentration can be reduced, the service life of the radiator can be extended, and the reliability and performance of the radiator can be improved.

[0056] The weld grinding device realizes automatic operation of the device through driving components such as the pneumatic rod 133 and the pneumatic cylinder 144, reduces manual intervention, and improves work efficiency. The pneumatic rod 133 controls the opening and closing of the upper clamping plate 11 and the lower clamping plate 12, the pneumatic cylinder 144 controls the movement of the limit plate 141, and the driving seat 16 controls the swing of the device. The entire grinding process can be automatically controlled.

[0057] By adopting the synergistic effect of the clamping assembly 13 and the limit assembly 14, the freedom of movement of the upper clamping plate 11 and the lower clamping plate 12 is constrained, so that they only retain the freedom of rotation around the axis of the pipe. Through the linkage adjustment of the limit assembly 14 and the clamping assembly 15, the working trajectory of the grinding block 2 is accurately locked to ensure that its range of action is strictly limited to the weld area. At the same time, by limiting the range of movement of the grinding block 2, the contact path with the fin is completely blocked, thereby eliminating the risk of fin damage. The elastic member 152 provides the grinding block 2 with continuous and adjustable contact pressure, so that it dynamically fits the weld contour during operation, and the stroke limiting function of the limit assembly 14 simultaneously limits the displacement amplitude of the grinding block 2, which can accurately control the position of the grinding block 2 to ensure that the grinding block 2 only contacts with the weld to avoid damage to the heat sink. The device has the advantages of automatic operation, adaptability to different spacings, reduced friction resistance, and replaceable grinding blocks 2, which improves grinding efficiency and quality and achieves double protection: it maintains a stable weld grinding effect and prevents secondary damage to the heat sink or weld caused by pressure overload.

[0058] In the description of the present invention, the indicated positional relationship is only for the convenience of describing the present invention and simplifying the description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A weld grinding device for radiator processing, comprising a grinding block and a motion device for controlling the grinding block to grind along the weld, characterized in that: The sports device comprises: The upper clamping plate and the lower clamping plate, both ends of which are rotatably mounted with rollers capable of abutting against the pipe fittings; The clamping assembly is used to control the movement of the upper clamping plate and the lower clamping plate so that the rollers can be pressed against or loosened from the pipe fittings; Two limit assemblies are respectively arranged on the front and rear sides of the upper clamping plate, and the limit assemblies include a limit plate that can be attached to the fin and a control assembly for controlling the front and rear movement of the limit plate; Two clamping assemblies are respectively installed on the front and rear sides of the upper clamping plate. The clamping assemblies include a slide seat and an elastic member that can slide forward and backward relative to the upper clamping plate. The grinding block is fixedly installed on the slide seat. The elastic member is used to apply pressure in the front and rear directions to the grinding block so that the grinding block is close to the weld. When the slide seat abuts against the limit plate, the grinding block is located between the two fins and does not contact the fins. A driving seat is used to control the upper clamping plate and the lower clamping plate to swing back and forth with the axis of the pipe fitting as the rotation axis; The clamping assembly includes a mounting seat, one end of the upper clamping plate and the lower clamping plate are rotatably mounted on the mounting seat, and the hinges of the upper clamping plate and the lower clamping plate are fixedly connected to gears that are colinear with their rotation axes, the two gears are meshed, and a driving member for controlling the upper clamping plate or the lower clamping plate to rotate relative to the mounting seat is installed on the fixed seat; The driving member is a gas pressure rod, and the two ends of the gas pressure rod are respectively hinged to the fixing seat and the upper clamping plate.

2. The weld grinding device for heat sink processing according to claim 1, characterized in that: A roller is rotatably mounted on one side of the limiting plate that is in contact with the fin, and a sliding rod that is slidably mounted on the upper clamping plate is fixedly mounted on the other side of the limiting plate.

3. The weld grinding device for heat sink processing according to claim 2, characterized in that: The control component is a pneumatic cylinder, and a driving source of the pneumatic cylinder is connected to the sliding rod.

4. The weld grinding device for heat sink processing according to claim 1, characterized in that: The grinding block is in an arc shape.

5. The weld grinding device for heat sink processing according to claim 4, characterized in that: The number of the grinding blocks is four, two of which form a group, and the two grinding blocks in the same group are respectively located on the left and right sides of the limiting plate.

6. The weld grinding device for heat sink processing according to claim 5, characterized in that: A slide rail is arranged on the back of the grinding block, and a slide groove matched with the slide rail is arranged on the slide seat, and the bottom end of the slide groove extends to the bottom surface of the slide seat.

7. The weld grinding device for heat sink processing according to claim 6, characterized in that: When the roller is pressed against the pipe, there is a gap between the grinding block and the pipe.

8. The weld grinding device for heat sink processing according to claim 5, characterized in that: The slide seat is slidably connected to the upper clamping plate via a guide rail and a guide rod, and the middle portion of the slide seat can abut against the inner side of the limiting plate.

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