Special-shaped workpiece machining clamp

Abstract

The present application relates to the technical field of clamps, and discloses a special-shaped workpiece machining clamp, which comprises a conveying frame, a lifting frame and a cutter arranged at the bottom of the conveying frame, the top end of the cutter is provided with a driving frame, a plurality of mounting discs are equidistantly arranged in the driving frame, a linkage member is slidably connected in the mounting disc, the linkage member is connected with the driving frame, when the linkage member moves from the retracted position to the fixed position, the linkage member is fixed to the plurality of fixing members through the locking ring when reaching the fixed position, and when the linkage member moves from the fixed position to the retracted position, the fixing members are extruded into the inside of the mounting disc, so that the fixing members are compressed by the strong spring. The position of the plurality of fixing members is controlled through the movement of the linkage member, the workpiece surface is wrapped by the plurality of fixing members, the plurality of fixing members can be self-adapted to the shape of the outer surface of the pipe member, and the cutting can be uniformly carried out through the cutter, so that batch processing can be realized, and sufficient production efficiency and machining capacity can be ensured.

Description

Technical Field

[0001] This invention relates to the technical field of fixtures, and more particularly to a fixture for machining irregularly shaped workpieces. Background Technology

[0002] A fixture is a device used to fix an object to be processed in a suitable position, thereby enabling stable and safe processing or inspection.

[0003] Before cutting pipe fittings, clamps are needed to reinforce them. This is because vibration and impact are generated during the cutting process. Reinforcement reduces the impact of vibration and impact on the pipe fittings, avoids the possibility of deformation or twisting during the cutting process, and ensures that the cut pipe fittings maintain the required shape and size.

[0004] Currently, pipe reinforcement is achieved using multiple positioning cylinders. However, when processing non-standard irregular pipes, the cylinders, due to their planar fixing points, cannot stably reinforce the irregular pipes. Currently, specialized molds are used to ensure a perfect fit with the irregular pipes. This method requires manufacturing a specific irregular pipe for each different shape, making it impossible to reinforce multiple irregular pipes. Furthermore, the initial mold manufacturing process is time-consuming, significantly impacting production. Mold reinforcement is also limited to pipes of only one diameter. Even with minor variations in different models within the same batch, corresponding molds still need to be manufactured. If a single machine is used to cut and reinforce the pipe, the mold on that machine must be changed. If multiple machines are used, the pipe is transported to another machine for processing using a handling device. Both methods are cumbersome and significantly reduce processing speed. Multiple machines are also very costly, especially for medium-sized irregular workpieces, where handling is extremely inconvenient, and mold costs are high. Another method is to use fixing rods to fix a single irregular tube from four directions, and then use laser to attach it to the surface of the irregular tube and cut it according to the shape of the irregular tube. However, this method can only process one workpiece at a time and cannot quickly cut in batches.

[0005] To address this, a special workpiece machining fixture is proposed, which can stably reinforce various irregular workpieces with different pipe diameters and shapes. Summary of the Invention

[0006] The purpose of this invention is to provide a jig for processing irregularly shaped workpieces, which solves the problem that a single device cannot reliably perform batch reinforcement of irregularly shaped workpieces and pipes due to their varying shapes and diameters.

[0007] The technical solution of this invention is as follows: A jig for processing irregularly shaped workpieces includes a conveyor frame, a lifting frame and a cutter disposed at the bottom of the conveyor frame, a locator disposed at the top of the lifting frame, a drive frame disposed at the top of the cutter, a plurality of mounting plates equidistantly disposed inside the drive frame, a linkage component slidably connected inside the mounting plate, the linkage component being connected to the drive frame, a plurality of fixing components slidably connected at equal angles inside the mounting plate, the linkage component and the fixing components always being in contact, a locking ring slidably disposed inside the plurality of fixing components, the locking ring being sleeved with the linkage component, and the plurality of fixing components being... A strong spring connects the fixing component and the mounting plate. The linkage component includes two positions formed by the fully extended and fully retracted push-pull of the drive frame, namely the retracted position and the fixed position. When the linkage component moves from the retracted position to the fixed position, the strong spring causes the endpoints of multiple fixing components to move towards the center of the mounting plate. The endpoints of the fixing components stop moving when they contact the workpiece surface. When the linkage component reaches the fixed position, it fixes the multiple fixing components through the locking ring. When the linkage component moves from the fixed position to the retracted position, it squeezes the fixing components into the interior of the mounting plate, causing the fixing components to compress the strong spring.

[0008] Furthermore, the mounting plate has an outer sliding groove at an equal angle on the side near the cutter. The fixing component includes a force-bearing inclined plate slidably connected inside the mounting plate, and a fixing rod welded to the force-bearing inclined plate and slidably connected inside the outer sliding groove. The number and position of the fixing rods correspond one-to-one with the outer sliding grooves. Each of the fixing rods has a strip-shaped slot inside, and the locking ring is located inside the strip-shaped slot.

[0009] Furthermore, the linkage includes a rounded corner ring slidably connected inside the mounting plate, and a first connecting rod connected to one side of the rounded corner ring.

[0010] The number of rounded corner rings corresponds one-to-one with the mounting plate. The mounting plate has an inner sliding groove on its side, and the first connecting rod passes through the inner sliding groove. The two rounded corner rings are connected by the first connecting rod.

[0011] Furthermore, the side of the force-bearing inclined plate that is in contact with the rounded corner ring is the force-bearing surface, and the length of the force-bearing inclined plate is greater than its width.

[0012] Furthermore, the locking ring includes an annular component located inside the strip-shaped slot, a second connecting rod welded to one side of the annular component, and a force-bearing rod welded to one side of the second connecting rod.

[0013] The annular component fits into the fixed rod, and the number and position of the annular component and the force-bearing rod correspond one-to-one with the mounting plate. The second connecting rod passes through the inner sliding groove, and the two annular components are connected by the second connecting rod, which is slidably connected inside the rounded corner ring.

[0014] Furthermore, the plurality of rounded corner rings are divided into active rings and driven rings, with two active rings that are symmetrical about the central axis of the conveyor frame, and the plurality of driven rings located between the two active rings.

[0015] The drive frame includes a mounting frame fixedly connected to the top of the conveyor frame, and two drive cylinders fixedly connected to the inside of both ends of the mounting frame. The output ends of the two drive cylinders are respectively connected to the corresponding active rings.

[0016] Furthermore, the conveyor frame includes a conveyor, a receiving platform placed on one side of the conveyor, a connecting frame connecting the conveyor and the receiving platform, and a sliding frame fixedly connected to the top of the conveyor.

[0017] One side of the mounting frame is located between the conveyor and the receiving platform, and two connecting frames are provided and are symmetrical about the central axis of the conveyor.

[0018] Furthermore, the positioner includes a positioning plate slidably connected to the outside of the sliding frame, a drive plate slidably connected to the bottom of the conveyor, a transmission rod welded to the bottom of the positioning plate, a guide support rod welded to one end of the conveyor, a threaded rod threadedly connected to one side of the conveyor, and a boss welded to one side of the drive plate.

[0019] The number of positioning plates is twice that of the mounting plate. Multiple positioning plates are arranged in pairs at equal intervals. The top of the drive plate is sleeved with the guide support rod. There are two guide support rods, which are symmetrical about the central axis of the conveyor. The boss is fixedly connected to the threaded rod.

[0020] Furthermore, the drive plate is provided with guide grooves, and the transmission rod is located inside the guide grooves. The number and position of the guide grooves correspond one-to-one with the positioning plate, and two guide grooves are arranged symmetrically about the central axis of the mounting plate.

[0021] Furthermore, an extension plate is connected to one end of the lifting frame near the positioning plate, and a shaft disc is placed at the top of the extension plate, with the top of the shaft disc being concentric with the mounting plate.

[0022] The beneficial effects of this invention are:

[0023] The position of multiple fixed parts is controlled by the movement of the linkage component. The multiple fixed parts contact the workpiece surface and wrap around it, so that the multiple fixed parts will adaptively change according to the shape of the outer surface of the pipe. At the same time, the linkage component locks the fixed parts through the locking ring, so that the pipe is also locked. Therefore, there is no need to adjust or replace the fixed mold, which reduces the cost and time required to design and manufacture different fixed molds. It can provide stable reinforcement for pipes of different shapes and sizes, thereby meeting the processing needs of different workpieces. It can also be uniformly cut by a cutter, enabling batch processing and ensuring sufficient production efficiency and processing capacity.

[0024] By controlling the active loop through a single drive of the mounting bracket, the force-bearing inclined plates and fixing rods inside multiple mounting discs are synchronously fixed. This effectively achieves synchronous fixing of the force-bearing inclined plates inside multiple mounting discs, and each force-bearing inclined plate inside the mounting disc can form an individual locking structure. This allows for the unified processing of pipe fittings from different batches during a single cut, making full use of the equipment's time, improving production efficiency, reducing idle time, and thus increasing output. It also allows for the arbitrary arrangement of the processing sequence and quantity of different batches of pipe fittings, enabling optimized production planning, maximizing the utilization rate of processing equipment, and reducing production cycles.

[0025] The positioning plate and drive plate can quickly position the pipes. At the same time, the height of the conveyor and the receiving platform can be adjusted synchronously through the lifting frame. This ensures that the pipes are accurately wrapped by the force-bearing inclined plate, so that there is no excessive height difference between the pipes and the receiving platform. This prevents the cut pipes from being damaged by collision. Especially for thinner pipes, this avoids the need to place different buffer pads according to different pipe requirements and achieves synchronous height adjustment. Attached Figure Description

[0026] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a second-view three-dimensional structural diagram of the present invention;

[0028] Figure 3 This is a schematic diagram of the installation disk of the present invention;

[0029] Figure 4 For the present invention Figure 3 Sectional view at point BB;

[0030] Figure 5 This is a schematic diagram of the structure of the fastener of the present invention;

[0031] Figure 6 This is a schematic diagram of the linkage component of the present invention;

[0032] Figure 7 For the present invention Figure 2 Enlarged view of point A in the middle;

[0033] Figure 8 This is a schematic diagram of the positioner of the present invention;

[0034] Figure 9 For the present invention Figure 6 Sectional view at point C;

[0035] Figure 10 This is a diagram showing the state of the linkage component in a fixed position when no pipe is placed.

[0036] Figure 11 This is a diagram showing the state of the linkage component in a fixed position when the pipe fitting is placed according to the present invention;

[0037] Figure 12 This is a diagram showing the state of the linkage component of the present invention from the retracted position to the fixed position.

[0038] In the diagram: 1. Conveyor frame; 101. Conveyor; 102. Receiving platform; 103. Connecting frame; 104. Sliding frame; 2. Lifting frame; 3. Cutter; 4. Positioner; 41. Positioning plate; 42. Drive plate; 421. Guide chute; 43. Transmission rod; 44. Guide support rod; 45. Threaded rod; 46. Boss; 5. Drive frame; 51. Mounting frame; 52. Drive cylinder; 6. Mounting plate; 61. Outer sliding plate 62. Groove; 63. Inner sliding groove; 7. Fixing hole; 7. Linkage component; 71. Rounded corner ring; 711. Driving ring; 712. Driven ring; 72. First connecting rod; 8. Fixing component; 81. Force-bearing inclined plate; 811. Force-bearing surface; 82. Fixing rod; 821. Strip groove; 9. Locking ring; 91. Ring component; 92. Second connecting rod; 93. Force-bearing rod; 10. Strong spring; 11. Extension plate; 12. Shaft disc. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Example 1, refer to Figures 1-12This invention provides a first embodiment of a workpiece machining fixture, including a conveyor frame 1, a lifting frame 2 and a cutter 3 disposed at the bottom of the conveyor frame 1. A locator 4 is disposed at the top of the lifting frame 2, and a drive frame 5 is disposed at the top of the cutter 3. Multiple mounting plates 6 are equidistantly arranged inside the drive frame 5. A linkage 7 is slidably connected inside the mounting plates 6, and the linkage 7 is connected to the drive frame 5. Multiple fixing members 8 are slidably connected at equal angles inside the mounting plates 6, and the linkage 7 and fixing members 8 are always in contact. Locking rings 9 are slidably disposed inside the multiple fixing members 8, and the locking rings 9 are sleeved with the linkage 7. A strong spring 10 is connected between each of the multiple fixing members 8 and the mounting plates 6. The characteristics of the strong spring 10 are utilized to make the strong spring... The spring 10 has a strong rebound force after compression, which can further increase the stability effect produced by the fixing member 8. The drive frame 5 is used as a power source to drive the linkage 7, so that the fixing member 8 can easily compress the strong spring 10. The linkage 7 includes two positions formed by the drive frame 5 being fully extended and fully retracted, namely the retracted position and the fixed position. When the linkage 7 moves from the retracted position to the fixed position, the strong spring 10 causes the ends of multiple fixing members 8 to move towards the center of the mounting plate 6. The ends of the fixing members 8 stop moving when they contact the workpiece surface. When the linkage 7 reaches the fixed position, it fixes multiple fixing members 8 through the locking ring 9. When the linkage 7 moves from the fixed position to the retracted position, the linkage 7 squeezes the fixing members 8 into the interior of the mounting plate 6, so that the fixing members 8 compress the strong spring 10.

[0041] Specifically, since multiple mounting plates 6 are equidistantly arranged, and each mounting plate 6 is equipped with a linkage 7, a locking ring 9, and multiple identical fixing parts 8 inside, the position movement of the fixing parts 8 is controlled by the linkage 7, and the strong spring 10 provides the corresponding fixing parts 8 with the power to move towards the center of the mounting plate 6. The fixing parts 8 stop moving when they contact the surface of the pipe fitting. This not only ensures that workpieces of different shapes are sufficiently stable during processing, but also reduces the cost of storing and managing multiple fixing devices. Furthermore, by utilizing the way that the fixing parts 8 change with the surface of the pipe fitting, it can be ensured that no damage or scratches are caused to the surface of the irregularly shaped workpiece during fixing, thus protecting the surface quality of the workpiece.

[0042] Reference Figures 3-9 The mounting plate 6 has an outer groove 61 at an equal angle on the side near the cutter 3. The fixing member 8 includes a force-bearing inclined plate 81 that is slidably connected inside the mounting plate 6, and a fixing rod 82 that is welded to the force-bearing inclined plate 81 and slidably connected inside the outer groove 61. The number and position of the fixing rod 82 correspond one-to-one with the outer groove 61. Each of the multiple fixing rods 82 has a strip-shaped slot 821 inside. The locking ring 9 is located inside the strip-shaped slot 821.

[0043] Specifically, multiple external grooves 61 are formed on the surface of a single mounting plate 6, and the external grooves 61 are positioned close to the cutter 3. This allows the position of the pipe fitting fixed by the fixing rod 82 to be very close to the cutting point. This allows the force-bearing inclined plate 81 of the cutter 3 to provide support at the closest distance when cutting the pipe fitting, further enhancing the fixing effect. Multiple fixing rods 82 can be uniformly fixed by a single locking ring 9. At the same time, the fixing rod 82 uses a strip-shaped slot 821 to ensure that the locking ring 9 does not affect the movement of the fixing rod 82. When the locking ring 9 is pulled, it can squeeze the fixing rod 82 from the inside, thereby completing the fixing effect of the fixing rod 82.

[0044] Reference Figures 2-6 The linkage 7 includes a rounded corner ring 71 that is slidably connected inside the mounting plate 6, and a first connecting rod 72 connected to one side of the rounded corner ring 71. The number of rounded corner rings 71 corresponds one-to-one with the mounting plate 6. An inner sliding groove 62 is opened on the side of the mounting plate 6. The first connecting rod 72 passes through the inner sliding groove 62, and the two rounded corner rings 71 are connected by the first connecting rod 72.

[0045] Specifically, each mounting plate 6 is equipped with a rounded corner ring 71 inside. When a single rounded corner ring 71 moves, it will be transmitted to each other through the first connecting rod 72, and then the movement of the rounded corner ring 71 is controlled by a certain force inclined plate 81.

[0046] Reference Figures 4-6 The side of the inclined plate 81 that is in contact with the rounded corner ring 71 is the force-bearing surface 811. When the rounded corner ring 71 moves, it will squeeze the force-bearing surface 811 of the inclined plate 81. Since the strong spring 10 has a strong rebound force after compression, in order to prevent the inclined plate 81 from moving too far after being subjected to the rebound force, which would cause the fixing rod 82 to impact the surface of the pipe, the length of the inclined plate 81 is greater than its width. This reduces the impact generated when the fixing rod 82 moves towards the center of the mounting plate 6. That is, when the rounded corner ring 71 moves, it reduces the squeezing of the inclined plate 81. If the slope is large, the rounded corner ring 71 moves a small distance, but the inclined plate 81 will cause the fixing rod 82 to move a large distance, which can easily damage thin pipes. Therefore, the angle of the force-bearing surface 811 is reduced so that the force-bearing surface 811 is a gentle slope, thereby avoiding collision.

[0047] Reference Figures 4-6 The locking ring 9 includes an annular member 91 located inside the strip groove 821, a second connecting rod 92 welded to one side of the annular member 91, and a force-bearing rod 93 welded to one side of the second connecting rod 92.

[0048] The annular part 91 fits into the fixed rod 82. The number and position of the annular part 91 and the force-bearing rod 93 correspond one-to-one with the mounting plate 6. The second connecting rod 92 passes through the inner sliding groove 62. The two annular parts 91 are connected by the second connecting rod 92. The second connecting rod 92 is slidably connected inside the rounded corner ring 71.

[0049] Specifically, when a single annular component 91 is driven by the rounded corner ring 71 via the force-bearing rod 93, multiple annular components 91 will move via the second connecting rod 92. The vertical movement of the annular components 91 is restricted by the second connecting rod 92, while the translational movement is restricted by the inner wall of the strip groove 821. When a single annular component 91 is pulled, multiple annular components 91 will also compress the inside of the strip groove 821, thereby locking the fixing rod 82. When the rounded corner ring 71 is about to move to the fixed position, it will compress the force-bearing rod 93. This is because the shape of the force-bearing rod 93 is a cylinder plus a circular disk, with the circular disk located at one end of the cylinder and having a diameter larger than the cylinder. The rounded corner ring 71 will have a corresponding through hole. The cylinder is located in the through hole, so the movement of the rounded corner ring 71 will not cause interference. The rounded corner ring 71 will compress the circular disk, thereby pulling and locking the annular component 91.

[0050] In addition, since the two annular parts 91 are connected by the second connecting rod 92, and the last annular part 91 does not have the second connecting rod 92, the force-bearing rod 93 at this position will be installed on the second connecting rod 92 of the previous annular part 91. Therefore, the last second connecting rod 92 is provided with two force-bearing rods 93.

[0051] Reference Figures 5-6 The multiple rounded corner rings 71 are divided into active rings 711 and driven rings 712. There are two active rings 711 and they are symmetrical about the central axis of the conveyor frame 1. The multiple driven rings 712 are located between the two active rings 711.

[0052] The drive frame 5 includes a mounting frame 51 fixedly connected to the top of the conveyor frame 1, and two drive cylinders 52 fixedly connected to the inside of both ends of the mounting frame 51. The output ends of the two drive cylinders 52 are respectively connected to the corresponding active rings 711.

[0053] Specifically, the active ring 711 is driven by the drive cylinder 52. When the active ring 711 moves, it is transmitted to the driven ring 712 through the first connecting rod 72, thereby realizing the movement of multiple rounded corner rings 71. At the same time, when the drive cylinder 52 is fully retracted and pulling the active ring 711, the linkage 7 is in the fixed position. Conversely, when the drive cylinder 52 is fully pushed, the active ring 711 is in the retracted position. The drive cylinder 52 is equipped with a solenoid valve to control the drive cylinder 52 to move slowly during driving, so that the fixed rod 82 moves slowly when it loses its compression. This avoids the fixed rod 82 impacting the surface of the pipe after being subjected to the rebound force of the strong spring 10. At the same time, the top of the mounting bracket 51 needs to be equipped with a cooling device as in the prior art to ensure the cooling of the cutter 3 during cutting.

[0054] In addition, to facilitate the installation of the drive cylinder 52, and with the last second connecting rod 92 having two force-bearing rods 93, the drive cylinder 52 will be installed outside the active ring 711 and connected to the mounting bracket 51. This makes the two active rings 711 symmetrically arranged, not equidistant. That is, the through hole position of the active ring 711 will be symmetrical with the other active ring 711, so that it can cooperate with the force-bearing rod 93, and also makes the drive cylinder 52 easier to install and use.

[0055] Reference Figures 1-3 The conveyor frame 1 includes a conveyor 101, a receiving platform 102 placed on one side of the conveyor 101, a connecting frame 103 connecting the conveyor 101 and the receiving platform 102, and a sliding frame 104 fixedly connected to the top of the conveyor 101.

[0056] One side of the mounting bracket 51 is located between the conveyor 101 and the receiving platform 102. Two connecting brackets 103 are provided and are symmetrical about the central axis of the conveyor 101. The two connecting brackets 103 connect the conveyor 101 and the conveyor 102 in parallel to form a whole.

[0057] Specifically, the middle of the mounting plate 6 is a fixing hole 63. When the conveyor 101 is not driven by the lifting frame 2, that is, when the conveyor 101 is in contact with the lifting frame 2, the conveyor 101 is at its lowest position and the top surface of the conveyor 101 is tangent to the fixing hole 63. This can help the user to quickly adjust the height of the lifting frame 2 according to the size of the workpiece.

[0058] In addition, when the side of the conveyor 101 is used, it needs to be equipped with a positioning device in the prior art, which can be composed of a common cylinder and a strip plate, so as to position the pipe from above. This makes the pipe positioning not move and the cutting more stable without deviation.

[0059] Example 2, refer to Figures 1-12This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the positioner 4 includes a positioning plate 41 slidably connected to the outside of the sliding frame 104, a drive plate 42 slidably connected to the bottom end of the conveyor 101, a transmission rod 43 welded to the bottom end of the positioning plate 41, a guide support rod 44 welded to one end of the conveyor 101, a threaded rod 45 threadedly connected to one side of the conveyor 101, and a boss 46 welded to one side of the drive plate 42.

[0060] The number of positioning plates 41 is twice that of mounting discs 6. Multiple positioning plates 41 are arranged in pairs at equal intervals. Positioning is achieved by simultaneously pressing the two sides of a single workpiece with two positioning plates 41. The top of the drive plate 42 is sleeved with the guide support rod 44. There are two guide support rods 44, which are symmetrical about the central axis of the conveyor 101. The guide support rod 44 provides support and guidance for the drive plate 42. The boss 46 is fixedly connected to the threaded rod 45. The movement of the threaded rod 45 will drive the boss 46 to move, thereby causing the drive plate 42 to move accordingly.

[0061] Specifically, the threaded rod 45 can also be driven by a positioning cylinder. This can be achieved by setting the positioning distance in advance in conjunction with a solenoid valve. In this case, the positioning plate 41 will be changed to an automatic reciprocating positioning structure, and no manual calculation or re-change is required. It can be done by rotating the threaded rod 45.

[0062] Reference Figures 1-8 The drive plate 42 has a guide groove 421, and the transmission rod 43 is located inside the guide groove 421. The number and position of the guide grooves 421 correspond one-to-one with the positioning plate 41. The two guide grooves 421 are a set symmetrically arranged about the central axis of the mounting plate 6.

[0063] Specifically, the two transmission rods 43 move along the path of the guide groove 421. Since the guide groove 421 is inclined at an angle, one end of the symmetrical guide groove 421 will move closer together. When the drive plate 42 moves, the transmission rods 43 will gradually move towards the position where the two guide grooves 421 are close together. This makes the distance between the two transmission rods 43 gradually decrease. As a result, the positioning plate 41 also gradually decreases the sliding distance outside the sliding frame 104. At this time, the two positioning plates 41 move closer to the central axis of the mounting plate 6, thereby positioning the workpiece.

[0064] Reference Figures 1-8 An extension plate 11 is connected to one end of the lifting frame 2 near the positioning plate 41. A shaft disc 12 is placed at the top of the extension plate 11, and the top of the shaft disc 12 is concentric with the mounting plate 6.

[0065] Specifically, the processing plant will fully understand the dimensions of the workpiece before processing. For circular workpieces, since the top surface of the conveyor 101 is tangent to the fixed hole 63 when the conveyor 101 is not driven by the lifting frame 2, the diameter of the tube and the diameter of the fixed hole 63 are known. At this time, the difference is calculated, and the conveyor 101 is raised by the difference. If the workpiece is a part with a planar structure, it is necessary to compare it with the shaft plate 12 so that the edge of the tube is raised to wrap around the disc at the top of the shaft plate 12. At the same time, for such tubes with planar structures, since their bottom can always fit with the conveyor 101, even if the curvature of the front and rear ends of the top of such tubes is different, they can be reinforced by the fixing rod 82.

[0066] In order to have a sufficient number of force-bearing inclined plates 81 and fixing rods 82 of varying thicknesses to fully cover the surface of the pipe fitting, when the linkage 7 is in the fixed position and there is no pipe fitting, multiple fixing rods 82 will move towards the center of the mounting plate 6. If there are too many and the fixing rods 82 are too thick, they will interfere with each other and collide when they are about to reach the center of the mounting plate 6, causing jamming. However, for medium-sized pipe fittings, jamming can be avoided to a certain extent because the diameter of medium-sized pipe fittings is larger. By adjusting the number and thickness of the force-bearing inclined plates 81 according to the diameter range of medium-sized pipe fittings, interference can be avoided while ensuring that a sufficient number of fixing rods 82 of varying thicknesses can lock the pipe fitting.

[0067] However, at this time, the multiple fixing rods 82 will not jam when they are fully close together, but will form a circle. The diameter of the top of the shaft disk 12 is the same as the diameter of the circle to assist manual work. If the edge of the processed pipe cannot wrap around the disc at the top of the shaft disk 12, it cannot be fixed. However, at this time, because the diameter of the small pipe is small, the surface of the small pipe that needs to be reinforced is less.

[0068] Therefore, for small pipe fittings, the diameter of the mounting plate 6 can be reduced. At this time, the number and size of the internal structure of the mounting plate 6 can also be reduced accordingly. Then, the circle formed by the multiple fixing rods 82, that is, the unprocessable diameter range, will also be reduced. At this time, the reinforcement range will change, from processing medium-sized pipe fittings to small pipe fittings. A single model of equipment can ensure stable clamping for different irregular pipe fittings within a large range, effectively avoiding the situation where the equipment needs to be adjusted once the shape or diameter of the pipe fitting changes, even if the change is small, thus ensuring production efficiency and cutting effect.

[0069] Based on embodiments 1-2, the working principle of the present invention is as follows:

[0070] The pipe fitting is placed between a set of positioning plates 41, aligned with the mounting plate 6. The shaft plate 12 is then placed on the top surface of the extension plate 11. The conveyor 101 is then moved up and down via the lifting frame 2. The conveyor 101 drives the receiving platform 102 to move synchronously via the connecting frame 103. The conveyor 101 also drives the pipe fitting to move, ensuring that the outer edge of the processed pipe fitting is located outside the top disc of the extension plate 11. At this point, by rotating the threaded rod 45, the threaded rod 45 moves, causing the boss 46 to translate. The drive plate 42 then moves synchronously along the guide support rod 44 along with the boss 46. When the drive plate 42 moves, its internal transmission rod 43 moves along... Moving along the path of the guide groove 421, the transmission rod 43 will drive the positioning plate 41 to move synchronously. The two guide grooves 421 are a symmetrical pair, which causes the transmission rod 43 to drive the positioning plate 41 to retract inward, thereby positioning the pipe through the positioning plate 41. After positioning, the rotating threaded rod 45 makes the two positioning plates 41 not fix the pipe, preventing the two positioning plates 41 from interfering with the movement of the pipe. At this time, the pipe is transported by the conveyor 101 to be translated and transported to the inside of the fixed hole 63. The positions where multiple pipes need to be cut coincide with the side of the mounting plate 6 near the cutter 3. At this time, the positioning device positions the pipe from above.

[0071] Subsequently, the active ring 711 is pulled synchronously by the two mounting brackets 51. The active ring 711 drives the driven ring 712 to move synchronously via the first connecting rod 72. As the active ring 711 and the driven ring 712 move, the position of the force-bearing inclined plate 81 changes, and multiple strong springs 10 rebound accordingly. The strong springs 10 push the corresponding force-bearing inclined plate 81 to move. The force-bearing inclined plate 81 drives the fixed rod 82 to move synchronously along the path of the outer slide groove 61. When the bottom end of the fixed rod 82 contacts the surface of the pipe, the fixed rod 82 stops moving due to the influence of the pipe surface. At this time, multiple fixed rods 82 will be distributed on the outer surface of the pipe, thus wrapping the surface of the pipe with the fixed rods 82. As the active ring 711 is gradually pulled, the active ring 711 will slightly pull and squeeze the end of the force rod 93 away from the second connecting rod 92 to fix it. The force rod 93 will then pull... The second connecting rod 92 moves slightly with the ring part 91, and the ring part 91 fits against the force-bearing inclined plate 81. The ring part 91 thus presses against the force-bearing inclined plate 81, locking multiple force-bearing inclined plates 81. At this time, the exterior of the workpiece is also locked. Then, the cutter 3 can cut multiple pipes at the same time. After the cutting is completed, the active ring 711 is pushed back, and the active ring 711 releases the lock on the force-bearing rod 93. The ring part 91 is no longer fixed to the fixed rod 82. As the active ring 711 presses against the force-bearing inclined plate 81, the force-bearing inclined plate 81 and the fixed rod 82 move away from the center of the mounting plate 6. The force-bearing inclined plate 81 is compressed by the strong spring 10, and the force-bearing inclined plate 81 then retracts into the interior of the outer slide groove 61. At this time, the saw blade of the cutter 3 is reset, and the next cutting point is transported to the position of the cutter 3 through the conveyor 101. The above work can be repeated.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A jig for machining irregularly shaped workpieces, comprising a conveyor frame (1), characterized in that: It also includes a lifting frame (2) and a cutter (3) set at the bottom of the conveyor frame (1). A locator (4) is set at the top of the lifting frame (2), and a drive frame (5) is set at the top of the cutter (3). Multiple mounting plates (6) are equidistantly arranged inside the drive frame (5). A linkage (7) is slidably connected inside the mounting plate (6). The linkage (7) is connected to the drive frame (5). Multiple fixing parts (8) are equidistantly slidably connected inside the mounting plate (6). The linkage (7) and the fixing parts (8) are always in contact. A locking ring (9) is slidably arranged inside the multiple fixing parts (8). The locking ring (9) is sleeved with the linkage (7). The multiple fixing parts (8) and the mounting plate (6) are connected to the drive frame (5). 6) are connected by a strong spring (10). The linkage (7) includes two positions formed by the fully extended and fully retracted push-pull of the drive frame (5), namely the retracted position and the fixed position. When the linkage (7) moves from the retracted position to the fixed position, the strong spring (10) causes the endpoints of multiple fixing parts (8) to move toward the center of the mounting plate (6). The endpoints of the fixing parts (8) stop moving when they contact the surface of the workpiece. When the linkage (7) reaches the fixed position, it fixes the multiple fixing parts (8) by the locking ring (9). When the linkage (7) moves from the fixed position to the retracted position, the linkage (7) squeezes the fixing parts (8) into the interior of the mounting plate (6), so that the fixing parts (8) compress the strong spring (10). The mounting plate (6) has an outer groove (61) at equal angles on the side near the cutter (3). The fixing member (8) includes a force-bearing inclined plate (81) slidably connected inside the mounting plate (6) and a fixing rod (82) welded to the force-bearing inclined plate (81) and slidably connected inside the outer groove (61). The number and position of the fixing rod (82) correspond one-to-one with the outer groove (61). The interior of each of the fixing rods (82) has a strip-shaped slot (821). The locking ring (9) is located inside the strip-shaped slot (821). The linkage (7) includes a rounded corner ring (71) that is slidably connected inside the mounting plate (6), and a first connecting rod (72) connected to one side of the rounded corner ring (71). The number of the rounded corner rings (71) corresponds one-to-one with the mounting plate (6). The mounting plate (6) has an inner sliding groove (62) on its side. The first connecting rod (72) passes through the inner sliding groove (62). The two rounded corner rings (71) are connected by the first connecting rod (72). The multiple rounded corner rings (71) are divided into active rings (711) and driven rings (712). There are two active rings (711) and they are symmetrical about the central axis of the conveyor frame (1). The multiple driven rings (712) are located between the two active rings (711). The conveyor frame (1) includes a conveyor (101), a receiving platform (102) placed on one side of the conveyor (101), a connecting frame (103) connecting the conveyor (101) and the receiving platform (102), and a sliding frame (104) fixedly connected to the top of the conveyor (101). There are two connecting frames (103) and they are symmetrical about the central axis of the conveyor (101). The positioner (4) includes a positioning plate (41) slidably connected to the outside of the sliding frame (104), a drive plate (42) slidably connected to the bottom of the conveyor (101), a transmission rod (43) welded to the bottom of the positioning plate (41), a guide support rod (44) welded to one end of the conveyor (101), a threaded rod (45) threadedly connected to one side of the conveyor (101), and a boss (46) welded to one side of the drive plate (42). The number of positioning plates (41) is twice that of the mounting plate (6). Multiple positioning plates (41) are arranged in pairs at equal intervals. The top of the drive plate (42) is sleeved with the guide support rod (44). There are two guide support rods (44) that are symmetrical about the central axis of the conveyor (101). The boss (46) is fixedly connected to the threaded rod (45).

2. The irregular workpiece machining fixture according to claim 1, characterized in that: The side of the force-bearing inclined plate (81) that is in contact with the rounded corner ring (71) is the force-bearing surface (811), and the length of the force-bearing inclined plate (81) is greater than its width.

3. The irregular workpiece machining fixture according to claim 2, characterized in that: The locking ring (9) includes an annular part (91) located inside the strip groove (821), a second connecting rod (92) welded to one side of the annular part (91), and a force-bearing rod (93) welded to one side of the second connecting rod (92). The annular component (91) fits into the fixed rod (82). The number and position of the annular component (91) and the force rod (93) correspond one-to-one with the mounting plate (6). The second connecting rod (92) passes through the inner sliding groove (62). The two annular components (91) are connected by the second connecting rod (92). The second connecting rod (92) is slidably connected inside the rounded corner ring (71).

4. The irregular workpiece machining fixture according to claim 1, characterized in that: The drive frame (5) includes a mounting frame (51) fixedly connected to the top of the conveyor frame (1), and two drive cylinders (52) fixedly connected to the inside of both ends of the mounting frame (51). The output ends of the two drive cylinders (52) are respectively connected to the corresponding active ring (711). One side of the mounting frame (51) is located between the conveyor (101) and the receiving platform (102).

5. A jig for machining irregularly shaped workpieces according to claim 2, characterized in that: The drive plate (42) has a guide groove (421), and the transmission rod (43) is located inside the guide groove (421). The number and position of the guide groove (421) correspond one-to-one with the positioning plate (41). The two guide grooves (421) are symmetrically arranged about the central axis of the mounting plate (6).

6. A jig for machining irregularly shaped workpieces according to claim 2, characterized in that: The lifting frame (2) is connected to an extension plate (11) at one end near the positioning plate (41). A shaft disc (12) is placed at the top of the extension plate (11), and the top of the shaft disc (12) is concentric with the mounting plate (6).

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