Pipe clamp of fusion welding machine
By designing a rotary disc driven by power source and a welder pipe fixture with jaws that move, the problem of fixtures in the prior art is difficult to adapt to pipes of different diameters, and efficient pipe clamping and loosening is achieved, which improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202421345257.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-12
AI Technical Summary
Existing welding machine fixtures are difficult to adapt to pipes of different diameters, resulting in the need to frequently replace fixtures, reducing production efficiency and increasing production costs.
A welder pipe fixture including a fixed plate, through-hole, turntable and jaws is designed. The turntable is driven to rotate through a power source, and the jaws move along the slide groove and strip groove to achieve clamping and loosening of pipes of different diameters.
The fixture can adapt to pipes of different diameters without changing the fixture, improves welding efficiency and reduces production costs. The smooth movement of the jaws avoids damage to the pipe.
Smart Images
Figure CN222662722U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of auxiliary welding devices for fusion welding machines, and more specifically to a pipe clamp for fusion welding machines. Background Art
[0002] Fusion welding is a process of melting the welding parts of two welded parts by high temperature, and then making the two welded parts fit tightly together by squeezing them under pressure. The molten solutions of the two welded parts will mix and solidify as the welded parts cool down, and the two welded parts will be tightly welded together.
[0003] In actual production, fusion welding technology has also been widely used in the welding of pipes, and the cross-section of the pipe is round and not easy to clamp, so a special clamp is needed to clamp it during the fusion welding process. For example, an existing patent with the authorization announcement number CN218906356 U and the name "Pipe clamp for plastic pipe fusion welding machine" discloses a technical solution including a bottom plate, the bottom of which is fixedly connected with four support legs, a driving mechanism arranged on the support plate, and a sliding mechanism arranged on the bottom plate. The driving mechanism can make the sliding mechanism operate, the sliding mechanism can make the first clamp move, and the first clamp and the second clamp clamp and fix the pipe. In this technical solution, the shape and size of the first clamp and the second clamp are fixed, and can only clamp pipes of a single specification size. In actual pipeline fusion welding, it is often necessary to fusion weld pipes of different diameters, resulting in the need to fix the pipes with clamps of various sizes and models. Not only does it take time to replace the clamp, resulting in low production efficiency, but it is also necessary to equip clamps of various sizes and specifications, resulting in an increase in production costs. Utility Model Content
[0004] The utility model overcomes the deficiencies in the prior art and provides a fusion welding machine pipeline clamp, which can be suitable for pipes with different diameters, avoids frequent replacement of the clamp and thus improves production efficiency.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A pipe clamp for a fusion welding machine comprises a fixing plate, which is used to be connected to the fusion welding machine. A through hole is also provided on the fixing plate, and a plurality of slide grooves are arranged in a circular array around the through hole, and a cavity is provided inside the fixing plate; a turntable is provided inside the cavity, a clearance hole is provided at the central axis of the turntable, and the clearance hole is coaxial with the through hole; a strip groove is spirally provided on the turntable; a claw is provided in cooperation with the strip groove, and the claw also slidably cooperates with the slide groove; a power source for driving the turntable to rotate is provided inside the cavity.
[0007] In the above technical solution, when the pipe needs to be clamped, a key step is to insert the pipe into the through hole and the clearance hole. The accuracy of this step directly affects the subsequent clamping effect. When the pipe is successfully inserted, the turntable driven by the power source begins to play its role. This power source can be a motor, a hydraulic cylinder, a cylinder or other forms of power devices, which provides the motive force for the rotation of the turntable. In addition, the claws not only fit tightly with the spirally arranged strip grooves, but also slide with the slide grooves at the same time. This double-matching design enables the claws to slide along the slide grooves and move in the radial direction of the turntable when the turntable rotates. Specifically, when the turntable rotates forward, all the claws move smoothly toward the central axis of the turntable. This inward movement enables the claws to fit tightly on the outer wall of the pipe, thereby achieving the clamping of the pipe. This clamping method is not only firm and reliable, but also can adapt to pipes of different diameters. Conversely, when the turntable rotates in the reverse direction, the claws will move away from the central axis of the turntable. This outward movement makes the clamping claw gradually loosen the clamping of the pipe, thereby realizing the loosening operation of the pipe. This design makes the clamping device convenient to clamp and loosen the pipe, greatly improving the working efficiency.
[0008] Preferably, the clamping claw comprises a claw head, a threaded hole is formed on the claw head, a screw is arranged on the threaded hole, and the screw passes through the strip groove and slides in the strip groove, and the other end of the screw is threadedly connected with a clamping block. When a pipe with a smaller diameter is required, the screw on the clamping claw can be separated from the clamping block, and part of the clamping claw can be removed to avoid interference caused by too many clamping claws.
[0009] Preferably, a sleeve is sleeved on the screw, and the sleeve is slidably matched with the strip groove.
[0010] Preferably, the height of the sleeve is smaller than the thickness of the turntable.
[0011] Preferably, a clamping ring is further provided between the sleeve and the clamping block.
[0012] Preferably, a magnet is embedded on the surface of the clamping block close to the turntable.
[0013] Preferably, a rubber pad is provided on one side of each claw head close to the through hole, and each rubber pad is equidistant from the central axis of the through hole, that is, the side of each rubber pad close to the through hole is equidistant from the central axis of the through hole.
[0014] Preferably, the thickness of the rubber pad is 0.5 cm-0.8 cm.
[0015] Preferably, the rubber pad is made of a copolymer of ethylene, propylene and a small amount of a third non-conjugated diene monomer.
[0016] Preferably, a sleeve is provided at one end of the turntable away from the claw, and the sleeve is coaxial with the through hole and the clearance hole, and the sleeve is connected to the fixed plate through a bearing.
[0017] Preferably, gear teeth are arranged around the turntable, the power source is a cylinder, and the output end of the cylinder is connected to a rack, and the rack is meshed with the gear teeth.
[0018] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:
[0019] 1. The clamp cooperates with the strip hole and the slide groove. When the turntable rotates, the clamp block can only move toward or away from the center axis of the through hole, so it can clamp pipes of different diameters. There is no need to replace the clamp when clamping pipes of different specifications, which can improve the welding efficiency, and a single clamp can also effectively reduce the production cost compared with multiple clamps.
[0020] 2. When the clamp is clamping and releasing the pipe, the movement of the jaws is smooth, which can avoid damage to the pipe caused by sudden impact or movement.
[0021] 3. The clamp is adaptable to different pipe diameters. By setting the claws and the clamping block connected by a screw, part of the claws can be removed when clamping a pipe with a smaller diameter to clamp a pipe with a smaller diameter, thereby avoiding interference between the claws. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 It is a top view of the utility model;
[0024] Figure 3 It is the internal structure diagram of the utility model;
[0025] Figure 4 It is a cross-sectional view of the utility model;
[0026] Figure 5 This is a schematic diagram of the claw structure of the utility model;
[0027] The names of the components in the attached drawings are as follows:
[0028] 1. fixing plate, 2. through hole, 3. cavity, 4. turntable, 5. gear teeth, 6. pipe sleeve, 7. bearing, 8. strip groove, 9. slide groove, 10. claw, 101. claw head, 102. threaded hole, 103. screw, 104. block, 105. sleeve, 106. rubber pad, 107. snap ring, 11. power source, 12. rack, 13. clearance hole. DETAILED DESCRIPTION
[0029] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.
[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0031] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:
[0032] Example 1
[0033] like Figure 1-3 A pipe clamp for a fusion welding machine shown in the figure comprises a fixing plate 1, which is used to be connected to the fusion welding machine. A through hole 2 is also provided on the fixing plate 1, and a plurality of slide grooves 9 are arranged in a circular array around the through hole 2, and a cavity 3 is provided inside the fixing plate 1; a turntable 4 is provided inside the cavity 3, and a clearance hole 13 coaxial with the through hole 2 is provided at the central axis of the turntable 4, and a strip groove 8 is spirally provided on the turntable 4; a claw 10 for clamping the pipe is provided in cooperation with the strip groove 8, and the claw 10 is also slidably matched with the slide groove 9; a power source 11 for driving the turntable 4 to rotate is provided inside the cavity 3.
[0034] Working principle of this embodiment: In the initial state of the clamp, the through hole 2 and the clearance hole 13 are in an open state. This design allows the clamp to accommodate pipes of different sizes to be melt-welded during the preparation stage. When the pipe needs to be inserted into the clamp, the operator only needs to insert the pipe into the through hole 2 and the clearance hole 13 to ensure that the position of the pipe is accurate. The operation of the clamp depends on the start-up of the power source 11. When the power source 11 starts working, it will drive the turntable 4 to rotate. The rotation of the turntable 4 is a key step for the clamp to clamp the pipe. During the rotation of the turntable 4, the claw 10 is not only slidably connected to the strip groove 8, but also slidably connected to the slide groove 9, ensuring the stability and accuracy of the claw 10 during the movement.
[0035] When the turntable 4 rotates counterclockwise, the claw 10 is restricted by the chute 9 and can only move along the direction of the chute 9 but cannot rotate in the circumferential direction. This restriction makes the movement of the claw 10 more precise and controllable. At the same time, the strip groove 8 is in the shape of a spiral line, which enables the strip groove 8 to drive all the claws 10 to move in the direction of the central axis of the through hole 2 during the counterclockwise rotation of the turntable 4. As the claws 10 move, they will gradually approach the pipe and finally achieve a tight clamping of the pipe. After the clamping process is completed, the pipe is firmly fixed in the fixture, providing a stable support for the subsequent welding operation. Not only does it ensure the stability of the pipe, but it also effectively prevents displacement and deformation during the welding process. When it is necessary to loosen the pipe, it is only necessary to operate the power source 11 to rotate the turntable 4 clockwise. During the clockwise rotation process, the strip groove 8 will also play a role, driving all the claws 10 to move in the direction away from the central axis. As the claws 10 move, they will gradually move away from the pipe and finally achieve the loosening of the pipe.
[0036] Beneficial effects of this embodiment: the power source 11 drives the turntable 4 to rotate, thereby further driving all the claws 10 to simultaneously approach or move away from the central axis of the through hole 2. The claws 10 can clamp or release pipes of different diameters in the process of approaching and moving away.
[0037] Example 2
[0038] like Figure 4-5 As shown, an embodiment 2 of a fusion welding machine pipe clamp, based on embodiment 1, the claw 10 includes a claw head 101, the claw head 101 slides in the slide groove 9, and the claw head 101 has a threaded hole 102 on the side away from the turntable 4 in the direction of the turntable 4. More specifically, the threaded hole 102 is a stepped threaded hole 102, and a screw 103 is provided on the threaded hole 102. The screw 103 can be completely in the stepped threaded hole 102 to avoid the head of the screw 103 from being exposed. The screw 103 passes through the strip groove 8, and a sleeve 105 is also sleeved on the screw 103, and the height of the sleeve 105 is less than the thickness of the turntable 4. The screw 103 slides in the strip groove 8 through the sleeve 105. The other end of the screw 103 is threadedly connected with a clamping block 104, and a clamping ring 107 is also provided between the clamping block 104 and the sleeve 105. The surface of the clamping block 104 close to the turntable 4 is inlaid with a magnet, and the clamping block 104 is adsorbed on the surface of the turntable 4 by the magnet.
[0039] Working principle of this embodiment: when the turntable 4 rotates, the sleeve 105 rotates in the strip groove 8, and also moves in the radial direction of the turntable 4, that is, the claw head 101 moves in the slide groove 9, and the forward and reverse rotation of the turntable 4 drives the claw head 101 to move inward and outward to clamp the pipe. In addition, the claw head 101 and the clamping block 104 are connected at both ends of the screw 103, which can ensure that the sleeve 105 can always remain in the strip groove 8; in addition, the sleeve 105 will inevitably wear the clamping block 104 during long-term rotation, so the clamping ring 107 between the clamping blocks 104 and 105 can be replaced after a period of use, so that the claw head can always be kept in a good state. When it is necessary to clamp a pipe with a smaller diameter, the large number of claws 101 will interfere with each other and cannot move further inward to clamp the pipe. At this time, unscrew the screws 103 on some of the claws 10, remove the claws 101, and clamp the pipe with a smaller diameter with a smaller number. For example, when there are three claws 101, the minimum diameter of the pipe that can be clamped is smaller than the minimum diameter that can be clamped when there are six claws 101. After the claws 101 are removed, since the clamping block 104 is inlaid with a magnet on the surface close to the turntable 4, the clamping block 104 will continue to be adsorbed on the turntable 4, which is convenient for installing the clamping block 104 when a larger diameter pipe is needed next time.
[0040] The remaining technical features and working principles of this embodiment are consistent with those of Embodiment 1.
[0041] The beneficial effects of this embodiment are as follows: the clamping blocks can be installed or removed according to the diameter of the pipe. Specifically, when the diameter of the pipe is larger, a larger number of clamping blocks 104 can be installed, and when the diameter of the pipe is smaller, some of the clamping blocks 104 can be removed, so that too many clamping blocks 104 can be prevented from interfering during the clamping action, resulting in failure to clamp the pipe.
[0042] Example 3
[0043] like Figure 5 As shown, an embodiment 3 of a fusion welding machine pipe clamp is based on embodiment 2, and the main difference from embodiment 2 is that each claw head 101 is provided with a rubber pad 106 on the side close to the through hole 2, and more specifically, the rubber pad 106 is made of a copolymer of ethylene, propylene and a small amount of non-conjugated diene third monomer, the thickness of the rubber pad 106 is between 0.5cm and 0.8cm, and each rubber pad 106 is equidistant from the central axis of the through hole 2.
[0044] Working principle of this embodiment: each claw 101 is distributed in the shape of the spiral line of the strip groove 8. The distance between each claw 101 and the central axis of the through hole 2 is slightly different. Specifically, the claw closer to the center of the spiral line 101 is closer to the central axis of the through hole 2. In order to better clamp the pipe, that is, to ensure that the central axis of the pipe can be consistent with the central axis of the through hole 2 and the clearance hole 13, it is necessary to stick a rubber pad 106 on each claw 101 to make up for the small gap between each claw and the through hole 2 and the clearance hole 13.
[0045] The remaining technical features and working principles of this embodiment are consistent with those of Embodiment 2.
[0046] Beneficial effects of this embodiment: the distances between each claw 101 and the through hole 2 and the clearance hole 13 are equal, which can ensure that the central axis of the pipe in the final clamping state can coincide with the central axis of the through hole 2 and the clearance hole 13, thereby ensuring the quality of the pipe during fusion welding.
[0047] Example 4
[0048] like Figure 3-4 As shown, an embodiment 4 of a fusion welding machine pipe clamp is based on embodiment 1, and the main difference from embodiment 1 is that a sleeve 6 is provided at the end of the turntable 4 away from the slide groove 9, and the sleeve 6 is coaxial with the through hole 2 and the clearance hole 13, and the sleeve 6 is connected to the fixed plate 1 through a bearing 7.
[0049] Gear teeth 5 are arranged around the rotating disk 4, the power source 11 is a cylinder, and the output end of the cylinder is connected to a rack 12, and the rack 12 is meshed with the gear teeth.
[0050] The working principle of this embodiment is: the reciprocating motion of the rack 12 is driven by the extension and contraction of the power source 11, i.e., the cylinder. Figure 3 As shown in , when the output end of the cylinder extends, it will drive the rack 12 to move to the left. Since the rack 12 and the gear 5 are meshed, it will also drive the turntable 4 to rotate counterclockwise, and at this time all the claws 10 will move inward to clamp the pipe; conversely, when the output end of the cylinder retracts, it will drive the turntable to rotate clockwise, driving all the claws 10 away from the central axis of the through hole 2 to loosen the pipe. The turntable 4 will also drive the sleeve 6 to rotate during the rotation process, and the sleeve 6 is connected through the bearing 7, so the turntable 4 will rotate more smoothly.
[0051] The remaining technical features and working principles of this embodiment are consistent with those of Embodiment 1.
[0052] The principle is reasonable and effective: through the meshing of the rack and the gear teeth, and the cylinder as the power source, it can ensure that a stable power source is provided for the turntable.
[0053] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the utility model. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the utility model.
Claims
1. A pipe clamp for a fusion welding machine, comprising a fixing plate (1), wherein the fixing plate (1) is used to be connected to the fusion welding machine, and is characterized in that: The fixing plate (1) is provided with a through hole (2), a plurality of slide grooves (9) are arranged in a circular array around the through hole (2), and a cavity (3) is provided inside the fixing plate (1); a turntable (4) is provided inside the cavity (3), a clearance hole (13) is provided at the central axis of the turntable (4), and the clearance hole (13) is coaxial with the through hole (2), and a strip groove (8) is also spirally provided on the turntable (4); a plurality of claws (10) for clamping pipes are slidably connected to the strip grooves (8), and the claws (10) are also slidably matched with the slide grooves (9); a power source (11) for driving the turntable (4) to rotate is provided inside the cavity (3).
2. A fusion welding machine pipe clamp according to claim 1, characterized in that: The claw (10) comprises a claw head (101), the claw head (101) is slidably connected to the slide groove (9), a threaded hole (102) is provided on the claw head (101), a screw (103) is provided on the threaded hole (102), and the screw (103) passes through the strip groove (8) and is slidably connected to the strip groove (8), and the other end of the screw (103) is threadedly connected to a clamping block (104).
3. A fusion welding machine pipe clamp according to claim 2, characterized in that: The screw (103) is sleeved with a sleeve (105), and the sleeve (105) is slidably matched with the strip groove (8).
4. A fusion welding machine pipe clamp according to claim 3, characterized in that: The height of the sleeve (105) is smaller than the thickness of the rotating disk (4).
5. The fusion welding machine pipe clamp according to claim 3, characterized in that: A clamping ring (107) is also provided between the sleeve (105) and the clamping block (104).
6. A fusion welding machine pipe clamp according to claim 2, characterized in that: A magnet is embedded in the surface of the clamping block (104) close to the rotating disk (4).
7. A fusion welding machine pipe clamp according to claim 2, characterized in that: A rubber pad (106) is provided on one side of each claw head (101) close to the through hole (2), and each rubber pad (106) is equidistant from the central axis of the through hole (2).
8. A fusion welding machine pipe clamp according to claim 7, characterized in that: The thickness of the rubber pad (106) is 0.5 cm to 0.8 cm.
9. A fusion welding machine pipe clamp according to any one of claims 1 to 8, characterized in that: The rotating disk (4) is provided with a sleeve (6) at one end away from the claw (10), and the sleeve (6) is coaxial with the through hole (2) and the clearance hole (13); the sleeve (6) is connected to the fixed plate (1) via a bearing (7).
10. A fusion welding machine pipe clamp according to any one of claims 1 to 8, characterized in that: The rotating disk (4) is provided with gear teeth (5) around it, the power source (11) is a cylinder, and the output end of the cylinder is connected to a rack (12), and the rack (12) is meshed with the gear teeth (5).