Positioning clamp for sand blasting

Abstract

The utility model relates to the technical field of sand blasting auxiliary tools, and discloses a sand blasting positioning clamp which comprises a base and a center rod, the center rod is arranged above the base, movable blocks are connected to the two sides of the interior of the center rod in a sliding mode, a first two-way lead screw is rotatably connected to the interior of the center rod, and a second two-way lead screw is rotatably connected to the interior of the center rod. The middles of the two movable blocks are in threaded connection with the outer surface of the first two-way lead screw, connecting rods are rotationally connected to the two ends of the two movable blocks correspondingly, external expansion plates are arranged on the two sides of the center rod correspondingly, and the two sides of one side of each external expansion plate are rotationally connected with one ends of the four connecting rods correspondingly; and one end of the first bidirectional screw rod is fixedly connected with a first knob. When circular pipes of different specifications are positioned, the device can adjust the position of the external expansion plate in time according to the actual diameter of the inner pipe of the circular pipe, so that the device can adapt to the circular pipes of different specifications, and the universality of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sandblasting auxiliary frock technical field especially, relates to a kind of positioning fixture for sandblasting. BACKGROUND

[0002] Sandblasting processing is also called sandblasting processing, and is a kind of processing technology with low cost and high efficiency for processing parts. When sandblasting processing is performed, the part to be processed is fixed on the positioning fixture, and then sandblasting treatment is performed.

[0003] After searching, the existing Chinese patent with publication number CN222134663U provides a positioning fixture for sandblasting, which relates to sandblasting auxiliary frock technical field, including installation frame, operation panel is fixedly installed on the outer side of installation frame, first motor is arranged on one side of operation panel, bidirectional screw rod is connected on one side of first motor, first screw nut is connected on the outer wall of bidirectional screw rod, first screw nut is fixed in the inside of first mounting plate, second motor is fixed on the side surface of first mounting plate, drive shaft is connected on one side of second motor, first spline sleeve is fixedly connected on one side of drive shaft, hexagonal sleeve joint is connected in the inside of first spline sleeve, hexagonal sleeve joint is fixed on the end surface of center rod, baffle ring is connected on the outer wall of center rod, and annular part is arranged on one side of baffle ring. The device is provided with an automatic rotating mechanism, so that the center rod drives multiple annular parts to rotate, so that different direction sandblasting can be performed on the parts, and the operation is convenient, and the labor burden is reduced.

[0004] However, in the prior art, sandblasting process is usually used when polishing parts of round pipes. The round pipe needs to be fixed on the clamp during processing, but the specification of the existing device clamp is fixed, and cannot be adjusted according to the diameter of the round pipe, resulting in the need to replace the new clamp to increase the cost when polishing another specification of round pipe. A scheme is proposed to solve the problem in the above background technology. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a positioning fixture for sandblasting, which aims to improve the problem that sandblasting process is usually used when polishing parts of round pipes, and the round pipe needs to be fixed on the clamp during processing, but the specification of the existing device clamp is fixed, and cannot be adjusted according to the diameter of the round pipe, resulting in the need to replace the new clamp to increase the cost when polishing another specification of round pipe.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: It includes a base and a central rod, the central rod being positioned above the base. Movable blocks are slidably connected to both sides of the interior of the central rod. A first bidirectional lead screw is rotatably connected inside the central rod. The middle portions of the two movable blocks are threadedly connected to the outer surface of the first bidirectional lead screw. Connecting rods are rotatably connected to both ends of the two movable blocks. Outer expansion plates are provided on both sides of the central rod. Two sides of one side of each of the four outer expansion plates are rotatably connected to one end of each of the four connecting rods. A first knob is fixedly connected to one end of the first bidirectional lead screw. A first fastening ring is threadedly connected to one side of the outer surface of the first bidirectional lead screw. A first fixing plate is fixedly connected to one end of the central rod. One end of each of the two outer expansion plates is slidably connected to two sides of one side of the first fixing plate.

[0007] As a further description of the above technical solution: When positioning round tubes of different specifications, the round tube can be sleeved on the outside of the expansion plate. Then, the first fastening ring is rotated to release the limit of the first double-acting screw. Then, the first knob is rotated to drive the first double-acting screw to rotate. The rotating first double-acting screw will drive the two movable blocks to move inside the central rod. After the movement, it will drive the connecting rods at both ends to move. At this time, the expansion plates on both sides can expand to both sides under the action of the connecting rods, so that the expansion plates can fit tightly against the inner wall of the round tube. At the same time, when the expansion plates move, one end of them will slide on the side of the first fixed plate, making the movement more stable. After the adjustment of the expansion plates is completed, the first fastening ring can be tightened again.

[0008] Preferably, a buckle block is fixedly connected to one side of the first fixing plate, and a support rod is fixedly connected to the upper end of the base.

[0009] As a further description of the above technical solution: the snap-fit ​​block can be inserted into the snap-fit ​​bracket to fix and install the No. 1 fixing plate.

[0010] Preferably, a second fixing plate is rotatably connected to one side of the first support rod, and a buckle bracket is fixedly connected to one side of the second fixing plate.

[0011] As a further description of the above technical solution: the second fixed plate can rotate on the side of the first support rod.

[0012] Preferably, the interior of the buckle frame is inserted into the outer surface of the buckle block, and a fixing frame is fixedly connected to the lower end of the buckle frame.

[0013] As a further description of the above technical solution: the buckle bracket can be plugged into the buckle rod, and its first fixing plate and center rod and other components can be installed on the side of the first support rod.

[0014] Preferably, the upper rotation of the fixing frame is connected with No. 2 two-way screw rod, the upper end of the fixing frame is slidably connected with buckle rod on both sides, and the lower end of the two buckle rods is respectively screwed with the outer surface of the No. 2 two-way screw rod.

[0015] As a further description of the above technical scheme: rotating the No. 2 knob drives the No. 2 two-way screw rod to rotate, thereby driving the two buckle rods to separate from each other, and the end inserted in the buckle frame and the buckle block on both sides of the buckle rod is pulled out after moving.

[0016] Preferably, one end of the No. 2 two-way screw rod is fixedly connected with a No. 2 knob, one side of the outer surface of the No. 2 two-way screw rod is screwed with a No. 2 fastening ring, and one side of the No. 2 fixing disc is uniformly fixedly connected with a reinforcing rib.

[0017] As a further description of the above technical scheme: by rotating the No. 2 fastening ring, the limiting of the No. 2 two-way screw rod can be released.

[0018] Preferably, one side of the upper end of the base is slidably connected with a No. 2 supporting rod, the lower end of the base is fixedly connected with an electric push rod, and the output end of the electric push rod is fixedly connected with the lower end of the No. 2 supporting rod.

[0019] As a further description of the above technical scheme: the electric push rod can pull the No. 2 supporting rod to move on the base, and the rod body protruding on the No. 3 fixing disc is inserted into the connecting barrel on the end of the center rod.

[0020] Preferably, the upper end of the No. 2 supporting rod is fixedly connected with a motor, the output end of the motor is fixedly connected with a No. 3 fixing disc, both sides of one end of the center rod are fixedly connected with connecting barrels, and both sides of one side of the No. 3 fixing disc are respectively inserted into the interiors of the two connecting barrels.

[0021] As a further description of the above technical scheme: after the rod body protruding on the No. 3 fixing disc is inserted into the connecting barrel on the end of the center rod, the No. 3 fixing disc can drive the positioned round pipe to rotate when the motor drives the No. 3 fixing disc to rotate.

[0022] Compared with the prior art, the utility model has the advantages and positive effects that,

[0023] 1. In the utility model, when positioning different specifications of round pipes, the round pipe can be sleeved on the outside of the outer expansion plate, then the first fastening ring is rotated to release the limiting of the first bidirectional screw rod, then the first knob is rotated to drive the first bidirectional screw rod to rotate, the rotating first bidirectional screw rod drives the two movable blocks to move in the center rod, and drives the connecting rods at both ends to move, at this time, the outer expansion plates on both sides can be expanded to the two sides under the driving of the connecting rods, so that the outer expansion plates can tightly adhere to the inner wall of the round pipe, and the end of one side of the outer expansion plate can slide on the side surface of the first fixed disc when moving, so that the movement is more stable, after the adjustment of the outer expansion plate is completed, the first fastening ring can be tightened again, and the device can be adjusted in position of the outer expansion plate according to the actual diameter of the inner tube of the round pipe when positioning different specifications of round pipes, so that the device can adapt to round pipes of different specifications, and the universality of the device is increased.

[0024] 2. In the utility model, when the device needs to be overhauled and replaced after long-term use, the second fastening ring is rotated to release the limiting of the second bidirectional screw rod, then the second knob is rotated to drive the second bidirectional screw rod to rotate, so that the buckle rods on both sides are separated from each other, the ends inserted into the buckle frame and the buckle block on both sides of the buckle rod are pulled out after moving, at this time, the first fixed disc can be pulled out to disassemble the component used for positioning and clamping, through this method, the positioning and clamping components of the device can be quickly disassembled and installed when the device needs to be overhauled and replaced, and the efficiency of device maintenance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A perspective view of the positioning clamp for sand blowing is provided for the utility model;

[0026] Figure 2 A perspective view of the center rod part of the positioning clamp for sand blowing is provided for the utility model;

[0027] Figure 3 A perspective view of the buckle frame and buckle block part of the positioning clamp for sand blowing is provided for the utility model;

[0028] Figure 4 A perspective view of the buckle frame part of the positioning clamp for sand blowing is provided for the utility model;

[0029] Figure 5 A perspective view of the center rod and the third fixed disc part of the positioning clamp for sand blowing is provided for the utility model.

[0030] LEGEND:

[0031] 1. Base; 2. Electric push rod; 3. Support rod No. 2; 4. Motor; 5. Fixing plate No. 3; 7. Outer expansion plate; 8. Center rod; 9. Fixing plate No. 1; 10. Support rod No. 1; 11. Buckling block; 12. Double-acting screw No. 1; 13. Movable block; 14. Connecting rod; 15. Connecting cylinder; 16. Fastening ring No. 1; 17. Knob No. 1; 18. Double-acting screw No. 2; 19. Fixing frame; 20. Buckling rod; 21. Fastening ring No. 2; 22. Knob No. 2; 23. Buckling frame; 24. Fixing plate No. 2; 25. Reinforcing rib. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 , Figure 2 and Figure 5 As shown, one embodiment of this utility model includes a base 1 and a central rod 8. The central rod 8 is positioned above the base 1. Movable blocks 13 are slidably connected to both sides of the interior of the central rod 8. A first bidirectional lead screw 12 is rotatably connected to the interior of the central rod 8. The middle parts of the two movable blocks 13 are threadedly connected to the outer surface of the first bidirectional lead screw 12. Connecting rods 14 are rotatably connected to both ends of the two movable blocks 13. Outer expansion plates 7 are provided on both sides of the central rod 8. The two sides of one side of the four outer expansion plates 7 are rotatably connected to one end of the four connecting rods 14. A first knob 17 is fixedly connected to one end of the first bidirectional lead screw 12. A first fastening ring 16 is threadedly connected to one side of the outer surface of the first bidirectional lead screw 12. A first fixing plate 9 is fixedly connected to one end of the central rod 8. The two outer expansion plates 7 are slidably connected to the two sides of one side of the first fixing plate 9.

[0034] In this embodiment, when positioning round tubes of different specifications, the round tube can be sleeved on the outside of the expansion plate 7. Then, the first fastening ring 16 is rotated to release the limit of the first bidirectional screw 12. Then, the first knob 17 is rotated to drive the first bidirectional screw 12 to rotate. The rotating first bidirectional screw 12 will drive the two movable blocks 13 to move inside the central rod 8. After moving, it will drive the connecting rods 14 at both ends to move. At this time, the expansion plates 7 on both sides can expand to both sides under the drive of the connecting rods 14, so that the expansion plates 7 can be tightly attached to the inner wall of the round tube. At the same time, when the expansion plates 7 move, one end of them will slide on the side of the first fixing plate 9, making the movement more stable. After the adjustment of the expansion plates 7 is completed, the first fastening ring 16 can be tightened again. With this method, when positioning round tubes of different specifications, the device can adjust the position of the expansion plates 7 in a timely manner according to the actual diameter of the inner tube of the round tube, so that the device can be adapted to round tubes of different specifications and increase the versatility of the device.

[0035] Example 2, as Figures 1 to 5 As shown, a latching block 11 is fixedly connected to one side of the first fixing plate 9. A first support rod 10 is fixedly connected to the upper end of the base 1. A second fixing plate 24 is rotatably connected to one side of the first support rod 10. A latching frame 23 is fixedly connected to one side of the second fixing plate 24. The inside of the latching frame 23 is inserted into the outer surface of the latching block 11. A fixing frame 19 is fixedly connected to the lower end of the latching frame 23. A second double-acting screw 18 is rotatably connected to the upper part of the fixing frame 19. Latching rods 20 are slidably connected to both sides of the upper end of the fixing frame 19. The lower ends of the two latching rods 20 are threadedly connected to the outer surface of the second double-acting screw 18. One end is fixedly connected to a second knob 22, one side of the outer surface of the second bidirectional lead screw 18 is threaded with a second fastening ring 21, one side of the second fixed plate 24 is evenly fixedly connected with reinforcing ribs 25, one side of the upper end of the base 1 is slidably connected to a second support rod 3, the lower end of the base 1 is fixedly connected to an electric push rod 2, the output end of the electric push rod 2 is fixedly connected to the lower end of the second support rod 3, the upper end of the second support rod 3 is fixedly connected to a motor 4, the output end of the motor 4 is fixedly connected to a third fixed plate 5, one end of the center rod 8 is fixedly connected to two connecting cylinders 15, and one side of the third fixed plate 5 is respectively inserted into the interior of the two connecting cylinders 15.

[0036] When the device needs to be repaired and replaced after long-term use, the second fastening ring 21 is rotated to release the limitation of the second bidirectional screw rod 18, and then the second knob 22 is rotated to drive the second bidirectional screw rod 18 to rotate, thereby driving the buckle rods 20 on both sides to separate from each other. After the buckle rods 20 move, the end inserted into the buckle block 11 on both sides of the buckle frame 23 is pulled out. At this time, the first fixed disc 9 is pulled outwards to disassemble the components used for positioning and clamping. Through this method, the positioning and clamping components of the device can be quickly disassembled and installed when the device needs to be repaired and replaced, thereby improving the efficiency of device maintenance.

[0037] Working principle: when the device is used, the pipe to be polished is sleeved outside the outer expansion plate 7, and then the outer expansion plate 7 is adjusted to clamp the pipe. After that, the electric push rod 2 is started to pull the second support rod 3 to move on the base 1, and the rod body protruding from the third fixed disc 5 is inserted into the connecting barrel 15 at the end of the center rod 8. At this time, the device can drive the positioned pipe to rotate for sandblasting operation by the motor 4. When positioning pipes of different specifications, the pipe is sleeved outside the outer expansion plate 7, and then the first fastening ring 16 is rotated to release the limitation of the first bidirectional screw rod 12. Then, the first knob 17 is rotated to drive the first bidirectional screw rod 12 to rotate. The rotating first bidirectional screw rod 12 drives the two movable blocks 13 to move inside the center rod 8, and drives the connecting rods 14 at both ends to move after moving. At this time, the two outer expansion plates 7 can be expanded to both sides under the driving of the connecting rods 14, so that the outer expansion plates 7 can tightly adhere to the inner wall of the pipe. At the same time, when the outer expansion plates 7 move, the end on one side will slide on the side surface of the first fixed disc 9, so that the movement is more stable. After the adjustment of the outer expansion plate 7 is completed, the first fastening ring 16 can be tightened again. Through this method, when positioning pipes of different specifications, the device can timely adjust the position of the outer expansion plate 7 according to the actual diameter of the pipe, so that the device can adapt to pipes of different specifications, thereby increasing the versatility of the device. When the device needs to be repaired and replaced after long-term use, the second fastening ring 21 is rotated to release the limitation of the second bidirectional screw rod 18, and then the second knob 22 is rotated to drive the second bidirectional screw rod 18 to rotate, thereby driving the buckle rods 20 on both sides to separate from each other. After the buckle rods 20 move, the end inserted into the buckle block 11 on both sides of the buckle frame 23 is pulled out. At this time, the first fixed disc 9 is pulled outwards to disassemble the components used for positioning and clamping. Through this method, the positioning and clamping components of the device can be quickly disassembled and installed when the device needs to be repaired and replaced, thereby improving the efficiency of device maintenance.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, the made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A positioning jig for sandblasting, comprising a base (1) and a central rod (8), characterized in that: The center rod (8) is arranged above the base (1), both sides of the inside of the center rod (8) are slidably connected with the movable block (13), the inside of the center rod (8) is rotatably connected with the first bidirectional screw rod (12), the middle parts of the two movable blocks (13) are respectively threadedly connected with the outer surfaces of the first bidirectional screw rod (12), both ends of the two movable blocks (13) are rotatably connected with the connecting rod (14), both sides of the center rod (8) are provided with the outward expansion plate (7), two sides of one side of the four outward expansion plates (7) are respectively rotatably connected with one end of the four connecting rods (14), one end of the first bidirectional screw rod (12) is fixedly connected with the first knob (17), one side of the outer surface of the first bidirectional screw rod (12) is threadedly connected with the first fastening ring (16), one end of the center rod (8) is fixedly connected with the first fixed disc (9), one end of the two outward expansion plates (7) is respectively slidably connected with two sides of one side of the first fixed disc (9).

2. A positioning jig for sandblasting according to claim 1, characterized in that: One side of the first fixed disc (9) is fixedly connected with the buckle block (11), and the upper end of the base (1) is fixedly connected with the first supporting rod (10).

3. A positioning jig for sandblasting according to claim 2, characterized in that: One side of the first supporting rod (10) is rotatably connected with the second fixed disc (24), and one side of the second fixed disc (24) is fixedly connected with the buckle frame (23).

4. A positioning jig for sand blasting according to claim 3, wherein: The inside of the buckle frame (23) is inserted with the outer surface of the buckle block (11), and the lower end of the buckle frame (23) is fixedly connected with the fixed frame (19).

5. A positioning jig for sand blasting according to claim 4, wherein: The upper side of the fixed frame (19) is rotatably connected with the second bidirectional screw rod (18), both sides of the upper end of the fixed frame (19) are slidably connected with the buckle rod (20), and the lower ends of the two buckle rods (20) are respectively threadedly connected with the outer surfaces of the second bidirectional screw rod (18).

6. A positioning jig for sand blasting according to claim 5, wherein: One end of the second bidirectional screw rod (18) is fixedly connected with the second knob (22), one side of the outer surface of the second bidirectional screw rod (18) is threadedly connected with the second fastening ring (21), and one side of the second fixed disc (24) is uniformly fixedly connected with the reinforcing rib (25).

7. The positioning fixture for sandblasting according to claim 1, characterized in that: One side of the upper end of the base (1) is slidably connected with the second supporting rod (3), the lower end of the base (1) is fixedly connected with the electric push rod (2), and the output end of the electric push rod (2) is fixedly connected with the lower end of the second supporting rod (3).

8. A positioning jig for sand blasting according to claim 7, wherein: The upper end of the second supporting rod (3) is fixedly connected with the motor (4), the output end of the motor (4) is fixedly connected with the third fixed disc (5), both sides of one end of the center rod (8) are fixedly connected with the connecting barrel (15), and both sides of one side of the third fixed disc (5) are respectively inserted into the interiors of the two connecting barrels (15).

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