Positioning cutting device for metal part production

Abstract

The application relates to the technical field of cutting equipment, in particular to a positioning cutting device for metal part production. The positioning cutting device comprises a rack, a traction module and a cutting module, the traction module and the cutting module are arranged in the rack, a plurality of inner support pieces and inner support blocks are arranged in the rack, a plurality of support rods which are uniformly distributed are sealingly and slidably connected to the inner support pieces and the inner support blocks, the support rods are used for supporting bellows, and a power mechanism is arranged in the rack and is used for providing power for the movement of the inner support pieces and the expansion and contraction of the support rods in the inner support pieces. The inner support pieces and the inner support blocks are deeply arranged in the inside of the bellows to be cut, the support rods are used for providing inner-to-outer support for the bellows, the bellows are limited and fixed through the wave crests and wave troughs of the bellows, the position to be cut of the bellows is supported, the deformation of the bellows caused by extrusion of a disc cutter is inhibited, the product quality is maintained, and the cutter is protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting equipment, in particular to a positioning cutting device for metal part production. BACKGROUND

[0002] As a key flexible connecting element, metal bellows has been widely used in petrochemical, instrumentation, aerospace, chemical industry, power, cement, metallurgy and many other industries due to its unique structural design, i.e. a tubular body made of thin-walled metal with regular annular or spiral corrugations. Its core function is to effectively compensate for the deformation of the pipeline caused by thermal expansion and contraction, absorb the vibration energy generated during equipment operation, and adapt to the displacement of the pipeline caused by foundation settlement, thereby ensuring the safe and stable operation of the pipeline system; in the production and manufacturing link, the bellows usually adopts a continuous forming process, which rolls, forms and welds metal strips or plates to finally produce a continuous long pipe section. This long pipe section needs to be divided into finished pipe sections with specific lengths through a precise cutting process according to customer or design requirements.

[0003] However, when cutting a thin-walled bellows with a high-speed rotating disc cutter, the inherent elastic properties of the bellows make it prone to elastic deformation (such as local indentation, ovalization or corrugation twisting) due to local stress. This deformation not only interferes with the accuracy of the cutting path, causing uneven or size deviation of the cut, but also causes unexpected and irregular resistance to the cutter in the deformed area, resulting in damage to the cutter edge and reducing the service life of the cutter. SUMMARY

[0004] The present application provides a positioning cutting device for metal part production to overcome the shortcomings of existing thin-walled bellows cutting with a cutter, which is prone to compression deformation and affects product quality and causes damage to the cutter.

[0005] The technical solution is as follows: a positioning cutting device for metal part production, comprising: a rack, a traction module and a cutting module, the traction module and the cutting module are arranged in the rack, a plurality of inner supports and inner support blocks are arranged in the rack, the inner supports and the inner support blocks are used to penetrate into the interior of the bellows, the inner supports and the inner support blocks are sealingly and slidingly connected with a plurality of uniformly distributed support rods, the support rods are used to support the bellows, a power mechanism is arranged in the rack to provide power for the movement of the inner supports and the extension and contraction of the support rods in the inner supports, a communication mechanism is arranged in the inner supports to transmit power to the inner support blocks and control the extension and contraction of the support rods in the inner support blocks.

[0006] Further, the power mechanism comprises a mounting frame, a mounting disc, a motor and a middle connector, the mounting frame is fixedly connected to the frame, the mounting frame is rotationally connected with the mounting disc, the motor is fixedly connected to the frame through a support, the output shaft of the motor is transmissionally connected with the mounting disc through a gear set, the inner support is fixedly connected with the mounting disc, and the central axis of the inner support intersects with the central axis of the mounting disc but is not collinear, the middle connector is rotationally connected with the mounting disc, the middle connector is in communication with an external hydraulic pump group, the inner support is provided with a main flow channel and a plurality of branch flow channels, the branch flow channels are in communication with the main flow channel, the mounting disc is provided with a flow channel for connecting the main flow channel and the middle connector, and the support rods on the inner support sealingly slide in the adjacent branch flow channels.

[0007] Further, an electric push rod is fixedly connected to the frame through a support, the inner support block is provided with a secondary flow channel and a plurality of branch flow channels, the branch flow channels are in communication with the secondary flow channel, the support rods on the inner support block sealingly slide in the adjacent branch flow channels, a blocking disc is arranged in the secondary flow channel, a second spring is fixedly connected between the blocking disc and the inner support block, and the blocking disc is used for blocking the side of the secondary flow channel close to the inner support; the communication mechanism comprises a connecting rod, two connecting rings, an extension cylinder and a plug, the connecting rod is located in the main flow channel, the mounting disc is provided with a through hole for sealingly sliding connection of the connecting rod, the electric push rod is used for pushing the connecting rod to move, the two connecting rings are fixedly connected with the connecting rod, a tension spring is fixedly connected between the connecting ring on one side and the inner support, the extension cylinder sealingly and limitingly slides away from the mounting disc on one side of the main flow channel, a first spring is fixedly connected between the connecting ring on the other side and the extension cylinder, the plug is fixedly connected with the connecting rod, the plug is used for blocking the extension cylinder and pressing the blocking disc, and the inner support block is provided with a locking assembly for limiting the extension cylinder.

[0008] Further, the locking assembly comprises an elastic drum and a U-shaped frame, the elastic drum is fixedly connected to the inner support block, and the convex side of the elastic drum faces the secondary flow channel, the U-shaped frame is fixedly connected with the elastic drum, the extension cylinder is provided with a limiting ring groove close to the inner support block, and the U-shaped frame limits the extension cylinder through the limiting ring groove.

[0009] Further, the plug is a circular truncated cone.

[0010] Further, the side of the secondary flow channel close to the inner support is provided with an annular inclined surface for guiding the extension cylinder into the secondary flow channel.

[0011] Furthermore, a main sealing ring for blocking the branch flow channel is slidably connected within the secondary flow channel. The main sealing ring is fixedly connected to the blocking disc via a bracket. A secondary sealing ring located within the main flow channel is fixedly connected to the connecting rod. The secondary sealing ring is used to block the branch flow channel.

[0012] Furthermore, an elastic head is fixed to one end of the support rod away from the central axis of the inner support member.

[0013] Furthermore, the inner support member, the inner support block, and the support rod are all made of metal, and the elastic head is a filled elastomer composite material used to transfer the heat from the corrugated pipe cut to the inner support member and the inner support block.

[0014] Furthermore, it also includes a magnetic ring and an electromagnet, the magnetic ring and the electromagnet being fixed to the opposing sides of the inner support block and the inner support member, respectively, the magnetic ring and the electromagnet being used to provide magnetic repulsion force for the inner support block and the inner support member.

[0015] The advantages and positive effects of this invention compared with the prior art are as follows: This invention utilizes internal support members and internal support blocks to penetrate deep into the corrugated pipe to be cut, uses support rods to provide support for the corrugated pipe from the inside out, and limits and fixes the corrugated pipe by the crests and troughs of the corrugated pipe. In this way, on the one hand, it provides support for the position of the corrugated pipe to be cut, suppresses the deformation of the corrugated pipe caused by the pressure of the disc cutter, maintains product quality and protects the cutter, and on the other hand, it reduces the vibration of the position of the corrugated pipe to be cut, and maintains the stability of the cutting process.

[0016] By intermittently connecting the extension cylinder with the inner support block, the extension and retraction state of the support rod on the inner support block can be controlled. In this way, when cutting the corrugated pipe, the inner support and the support rod on the inner support block can provide support for the corrugated pipe, while the movement of the disc cutter is not affected.

[0017] By using a magnetic ring and an electromagnet to provide magnetic repulsion to the inner support block and inner support component, the distance between the inner support component and the inner support block is kept stable during the cutting of the corrugated pipe, and tension is provided to the position of the corrugated pipe to be cut, so that the position of the corrugated pipe to be cut is kept taut, thereby further reducing the vibration during the corrugated pipe cutting process. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the traction module and the cutting module of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the inner support member and inner support block of the present invention;

[0021] Figure 4This is a three-dimensional structural cross-sectional view of the internal support member and mounting plate of the present invention;

[0022] Figure 5 This is a three-dimensional structural cross-sectional view of the inner support member and inner support block of the present invention;

[0023] Figure 6 This is a three-dimensional structural cross-sectional view of the extension tube and the secondary sealing ring of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the extension tube and plug of the present invention;

[0025] Figure 8 This is an exploded view of the mounting bracket, mounting plate, and intermediate connector of the present invention;

[0026] Figure 9 Appendix to this invention Figure 6 Enlarged view of point A in the middle.

[0027] In the attached diagram: 1-Frame, 2-Traction module, 3-Cutting module, 4-Inner support component, 401-Main flow channel, 402-Branch flow channel, 5-Inner support block, 501-Secondary flow channel, 502-Diverter flow channel, 6-Support rod, 7-Mounting bracket, 8-Mounting plate, 9-Motor, 10-Intermediate connector, 11-Electric push rod, 12-Connecting rod, 121-Tension spring, 13-Connecting ring, 14-Extension cylinder, 141-First spring, 15-Plug, 16-Sealing plate, 161-Second spring, 17-Elastic drum, 18-U-shaped frame, 181-Limiting ring groove, 19-Main sealing ring, 20-Secondary sealing ring, 21-Elastic head, 22-Magnetic ring, 23-Electromagnet. Detailed Implementation

[0028] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and drawings.

[0029] Example 1

[0030] This embodiment provides a positioning and cutting device for the production of metal parts to reduce the probability of deformation during bellows cutting.

[0031] See Figures 1 to 5 A positioning and cutting device for metal parts production includes: a frame 1, a traction module 2, and a cutting module 3. Both the traction module 2 and the cutting module 3 are housed within the frame 1. The traction module 2 is used to traction a bellows and control the cutting length of the bellows. (See [reference]) Figure 2Inside the frame 1, two cylinders are fixed to the left and right sides of the traction module 2 via brackets to guide the movement of the bellows. The cutting module 3 is equipped with a disc cutter. The cutting module 3 cuts the bellows by controlling the up-and-down reciprocating movement of the disc cutter. The traction module 2 and the cutting module 3 are existing devices and will not be described in detail here. Multiple inner support members 4 and inner support blocks 5 are installed inside the frame 1. The inner support members 4 and inner support blocks 5 are located on the left and right sides directly below the disc cutter, respectively, to provide support for the left and right sides of the bellows to be cut. The number is two, that is, two inner support members 4 alternately cooperate with the inner support block 5 to provide support for the bellows; both the inner support member 4 and the inner support block 5 are sealed and slidably connected with a plurality of evenly distributed support rods 6. Here, the support rods 6 on the inner support member 4 and the inner support block 5 are multiple groups distributed circumferentially, and each group of support rods 6 consists of multiple rods that are equally spaced; the frame 1 is provided with a power mechanism that provides power for the movement of the inner support member 4 and the extension and retraction of its inner support rods 6, and the inner support member 4 is provided with a connecting mechanism for transmitting power to the inner support block 5 and controlling the extension and retraction of its inner support rods 6.

[0032] The above setup enables the inner support member 4 and inner support block 5 to penetrate deep into the corrugated pipe to be cut, and the support rod 6 to provide support for the corrugated pipe from the inside out. The corrugated pipe is also limited and fixed by the crests and troughs of the corrugated pipe. In this way, on the one hand, support is provided for the position of the corrugated pipe to be cut, suppressing the deformation of the corrugated pipe caused by the pressure of the disc cutter, maintaining product quality and protecting the cutter. On the other hand, it reduces the vibration of the position of the corrugated pipe to be cut, and maintains the stability of the cutting process.

[0033] See Figures 1 to 3 and Figure 8 The power mechanism includes: a mounting frame 7, a mounting plate 8, a motor 9, and a connecting member 10. The mounting frame 7 is fixedly connected to the frame 1 and rotatably connected to the mounting plate 8. The motor 9 is fixedly connected to the frame 1 via a bracket. The output shaft of the motor 9 is driven by a gear set to the mounting plate 8. Both inner support members 4 are fixedly connected to the mounting plate 8, and the two inner support members 4 are symmetrically distributed about the central axis of the mounting plate 8. The central axes of the two inner support members 4 intersect with the central axis of the mounting plate 8 but are not collinear. The mounting plate 8... The central axis is inclined relative to the horizontal plane, so that the two inner support members 4 can alternately coaxial with the cylinders on the left and right sides of the traction module 2. The middle connector 10 is rotatably connected to the mounting plate 8 and is connected to the external hydraulic pump group. The inner support member 4 is provided with a main channel 401 and multiple branch channels 402. The branch channels 402 are connected to the main channel 401. The mounting plate 8 is provided with a channel that connects the main channel 401 and the middle connector 10. The support rod 6 on the inner support member 4 slides in a sealed manner within the adjacent branch channels 402.

[0034] The above settings enable the rotation of the mounting plate 8 to switch the positions of the two inner support members 4, allowing the two inner support members 4 to alternately cooperate with the inner support block 5 to provide support for the corrugated pipe, reducing the action of cutting the corrugated pipe once and improving production efficiency.

[0035] See Figures 3 to 7 An electric push rod 11 is fixedly connected to the frame 1 via a bracket. An inner support block 5 contains a secondary flow channel 501 and multiple branch flow channels 502, which communicate with the secondary flow channel 501. A support rod 6 on the inner support block 5 slides in a sealed manner within adjacent branch flow channels 502. A sealing disc 16 is installed within the secondary flow channel 501, and a second spring 161 is fixedly connected between the sealing disc 16 and the inner support block 5. The sealing disc 16 is used to seal the left side of the secondary flow channel 501 to maintain stable pressure within the secondary flow channel 501. Figure 6 The second spring 161 is in a compressed and stored state. Initially (i.e., in the state shown in the attached figure), the main flow channel 401, branch flow channel 402, secondary flow channel 501 and diversion flow channel 502 all contain the minimum volume of atmospheric pressure hydraulic oil (the minimum volume here refers to the volume of the branch flow channel 402 and diversion flow channel 502 when all the support rods 6 are not extended).

[0036] See Figures 3 to 7 The connecting mechanism includes: a connecting rod 12, two connecting rings 13, an extension cylinder 14, and a plug 15. The connecting rod 12 is located within the main channel 401. The mounting plate 8 has a through hole for sealing and sliding connection of the connecting rod 12. An electric push rod 11 is used to push the connecting rod 12 to move. The end of the telescopic end of the electric push rod 11 is hemispherical to facilitate insertion into the through hole of the mounting plate 8. Both connecting rings 13 are fixedly connected to the right side of the connecting rod 12. A tension spring 121 is fixedly connected between the left connecting ring 13 and the inner support member 4. Figure 5 The tension spring 121 is in a stretched and stored state. The tension provided by the tension spring 121 is greater than the maximum pressure of the hydraulic oil in the main flow channel 401 (i.e., the pressure of the hydraulic oil in the main flow channel 401 corresponding to the maximum extrusion force provided by the support rod 6 that the bellows can withstand). The extension cylinder 14 is sealed and limited to sliding on the right side of the main flow channel 401. The extension cylinder 14 is used to insert into the left side of the secondary flow channel 501 to transport hydraulic oil. The first spring 141 is fixed between the connecting ring 13 on the right side and the extension cylinder 14. Figure 6 The first spring 141 is in a compressed and stored state. The plug 15 is fixed to the right end of the connecting rod 12. The plug 15 is used to block the right side of the extension cylinder 14 and squeeze the sealing disc 16. The inner support block 5 is provided with a locking component for limiting the extension cylinder 14.

[0037] The above settings enable the extension and retraction of the support rod 6 on the inner support block 5 to be controlled by the intermittent connection between the extension cylinder 14 and the inner support block 5. In this way, when cutting the corrugated pipe, the inner support 4 and the support rod 6 on the inner support block 5 can provide support for the corrugated pipe, while the movement of the disc cutter is not affected.

[0038] See Figure 6 and Figure 9 The locking assembly includes: a flexible drum plate 17 and a U-shaped bracket 18. The flexible drum plate 17 is made of elastic metal and is fixed to the inner support block 5. The flexible drum plate 17 has a concave-convex shape, with one side of the convex surface facing into the secondary flow channel 501, directly contacting the hydraulic oil in the secondary flow channel 501 to monitor its pressure. The material of the flexible drum plate 17 can be determined according to the pressure that the bellows can withstand. When the compressive force of the support rod 6 on the bellows approaches the pressure that the bellows can withstand... At its limit, the middle part of the elastic drum 17 bulges upward and deforms; the U-shaped frame 18 is fixedly connected to the upper side of the middle part of the elastic drum 17; a limiting annular groove 181 is provided on the right side of the extension cylinder 14; the U-shaped frame 18 limits the extension cylinder 14 through the limiting annular groove 181; an inclined surface is provided on the lower left side of the U-shaped frame 18; the inclined surface of the U-shaped frame 18 is used for the extension cylinder 14 to move itself by being squeezed; when assembling this device, the U-shaped frame 18 can be used to limit the extension cylinder 14 (see attached). Figure 6 (The state in the middle).

[0039] See Figure 6 and Figure 7 The plug 15 is frustum-shaped, so that the plug 15 can seal the extension cylinder 14 while it is in contact with and coplanar with the extension cylinder 14; this reduces the probability that hydraulic oil in the secondary flow channel 501 and the extension cylinder 14 will spill into the bellows when the extension cylinder 14 is detached from the left side of the secondary flow channel 501.

[0040] See Figures 5 to 7 The secondary flow channel 501 is sealed and slidably connected to a main sealing ring 19 for blocking the branch flow channel 502. The main sealing ring 19 is fixedly connected to the blocking disc 16 via a bracket. The connecting rod 12 is fixedly connected to a secondary sealing ring 20 located in the main flow channel 401. The secondary sealing ring 20 is used to block the branch flow channel 402. The support rods 6 on the same row on the inner support member 4 and the inner support block 5 are sealed and slidably connected to the adjacent branch flow channel 402.

[0041] The above setup enables the support rods 6 to be grouped in a row by multiple branch channels 402 and multiple diversion channels 502, and to isolate all the branch channels 402 and all the diversion channels 502 from each other by using the main sealing ring 19 and the secondary sealing ring 20, so that the support rods 6 in the same row can operate independently, reducing the probability of the bellows being squeezed and flattened.

[0042] The process after the above settings are adopted is as follows: When cutting the spiral corrugated pipe, the corrugated pipe is inserted into the frame 1 from right to left, so that the left end of the corrugated pipe passes through the cylinder on the right side of the traction module 2 and contacts the traction module 2. At this time, the traction module 2 starts and pulls the corrugated pipe to the left, so that the left end of the corrugated pipe passes through the cylinder on the left side of the traction module 2 and continues to move. During the process of the left end of the corrugated pipe passing through the left cylinder, the inner support block 5 and the inner support member 4 enter the interior of the corrugated pipe in sequence. As the corrugated pipe moves to the left, the traction module 2 stops when the length of the corrugated pipe located on the left side directly below the disc cutter reaches the predetermined specification.

[0043] Internal support: After the bellows is moved into place, the bellows is supported by the internal support member 4 and the internal support block 5. The specific operation is as follows: The hydraulic pump group is started, and hydraulic oil is injected into the two main channels 401 simultaneously through the flow channels of the intermediate connector 10 and the mounting plate 8. (See Appendix) Figure 7 At this time, the secondary sealing ring 20 located in the lower main channel 401 blocks all adjacent branch channels 402, and the extension cylinder 14 and the plug 15 together block the right end of the main channel 401, so that the hydraulic oil in the lower main channel 401 cannot flow, and the support rod 6 on the lower inner support 4 remains stationary.

[0044] (See) Figure 6 As the hydraulic oil enters the main flow channel 401 on the upper side, the hydraulic oil flows in two parts. One part enters the branch flow channel 402 and pushes the adjacent support rod 6 to extend until all the support rods 6 on the upper inner support member 4 are in contact with the inner side of the bellows. At this point, the support rods 6 stop moving and the hydraulic oil stops flowing into the branch flow channel 402.

[0045] Another portion of the hydraulic oil in the upper main channel 401 continues to flow to the right along the main channel 401, and passes through the connecting ring 13 and the secondary sealing ring 20 in sequence before entering the extension cylinder 14. Then, after passing through the gap between the extension cylinder 14 and the plug 15, it passes through the gap between the sealing plate 16 and the secondary flow channel 501 again before entering the secondary flow channel 501. The hydraulic oil in the secondary flow channel 501 enters the adjacent branch flow channel 502 and pushes all the support rods 6 on the inner support block 5 to extend until all the support rods 6 on the inner support block 5 are in contact with the inner side of the bellows. At this point, the support rods 6 stop moving, and the hydraulic oil stops flowing in the upper main channel 401 and the secondary flow channel 501. As the hydraulic pump station operates, the hydraulic oil pressure in the main channel 401 and the secondary flow channel 501 gradually increases until the extrusion pressure applied by the support rods 6 to the bellows approaches its limit. At this point, the hydraulic pump station stops, and the internal support for the bellows at the cutting position is completed.

[0046] As the hydraulic oil pressure in the secondary flow channel 501 gradually increases, the pressure exerted by the hydraulic oil on the elastic drum 17 gradually increases until the pressure exerted by the support rod 6 on the bellows approaches its limit. At this point, the hydraulic oil pressure causes the middle part of the elastic drum 17 to bulge upwards. The middle part of the elastic drum 17 drives the U-shaped frame 18 to move upwards, causing the U-shaped frame 18 to disengage from the limiting ring groove 181 and release the limiting effect on the extension cylinder 14. At this time, since the inner support member 4 and the inner support block 5 are both "fixed" inside the bellows by the support rod 6, the distance between the inner support member 4 and the inner support block 5 remains unchanged.

[0047] Disconnection: After the inner support member 4 and the inner support block 5 have completed their support of the bellows, disconnect the extension cylinder 14 from the inner support block 5. The specific operation is as follows (this paragraph only describes the parts located inside the upper inner support member 4): The telescopic end of the electric push rod 11 is retracted, and the connecting rod 12 and the connecting ring 13 move to the left under the traction of the tension spring 121. The connecting rod 12 first drives the secondary sealing ring 20 and the plug 15 to move (during this process, the elastic force of the first spring 141 is gradually released, and the extension cylinder 14 remains stationary under the action of the first spring 141). After the plug 15 is in contact with the extension cylinder 14, the right side of the plug 15 and the extension cylinder 14 are coplanar. The plug 15 drives the extension cylinder 14 to move to the left together. Finally, the tension spring 121 returns to its original shape, and the right side of the plug 15, the extension cylinder 14 and the inner support member 4 are coplanar. The secondary sealing ring 20 completely blocks all the branch channels 402 and separates the branch channels 402, preventing the hydraulic oil between different branch channels 402 from flowing together.

[0048] As the plug 15 moves to the left, the sealing disc 16 moves to the left along with the plug 15 under the action of the second spring 161. The sealing disc 16 drives the main sealing ring 19 to move to the left. When the plug 15 contacts the extension cylinder 14 and the right sides of the two are coplanar, the sealing disc 16 contacts the inner support block 5 and seals the left side of the secondary flow channel 501. The main sealing ring 19 separates all the branch flow channels 502 on the inner support block 5. At this time, the plug 15 and the extension cylinder 14 contact the sealing disc 16 at the same time. During the process of the sealing disc 16 and the plug 15 moving to the left together, the hydraulic oil between the extension cylinder 14 and the sealing disc 16 flows back to the secondary flow channel 501 and the main flow channel 401. When the extension cylinder 14 and the secondary flow channel 501 are disconnected, the probability of hydraulic oil flowing into the bellows is reduced. At this point, the connection between the extension cylinder 14 and the inner support block 5 is disconnected, which does not hinder the downward movement of the disc cutter.

[0049] Cutting: After disconnecting the extension tube 14 from the inner support block 5, the bellows is cut. The specific operation is as follows: the cutting module 3 is started and the disc cutter is controlled to move down. The disc cutter moves down between the upper inner support 4 and the inner support block 5 until the bellows is completely cut off.

[0050] Switching: Switch the two inner support components 4. The specific operation is as follows: Start the motor 9 and rotate the mounting plate 8 clockwise 180° through the gear set (see attached document). Figure 1 (The left view is a rotating perspective). When the mounting plate 8 rotates, the mounting plate 8 drives the two inner support members 4 on it to rotate together. The upper inner support member 4 drives the cut-off corrugated pipe to rotate together. Finally, the cut-off corrugated pipe moves to the lower side, and the original lower inner support member 4 and the inner support block 5 are coaxial.

[0051] Reconnection: After the inner support 4 is switched, the telescopic end of the electric push rod 11 extends and pushes the connecting rod 12 to the right, repeating the above steps of moving the connecting rod 12 to the left (it should be noted that during the process of the connecting rod 12 moving to the right and causing the plug 15 to push the sealing disc 16 to move, the inner support block 5 is fixed inside the bellows by the support rod 6 to remain stationary), so that the extension tube 14 is inserted into the left part of the secondary flow channel 501, the main sealing ring 19 and the secondary sealing ring 20 respectively release the blockage of the diversion flow channel 502 and the branch flow channel 402, and the sealing disc 16 releases the blockage of the secondary flow channel 501.

[0052] Hydraulic oil extraction: The hydraulic pump station starts and extracts hydraulic oil, reducing the pressure in the lower main channel 401 and attracting the connecting rod 12, extension cylinder 14 and plug 15 to move to the left, compressing the tension spring 121. The connecting rod 12 drives the secondary sealing ring 20 to move and release the blockage of the adjacent branch channel 402. Subsequently, the total volume of hydraulic oil in the main channel 401 and branch channel 402 gradually decreases. The support rod 6 retracts and releases the pressure on the bellows. At this time, the bellows slides down along the lower inner support 4 under its own weight.

[0053] During the process of hydraulic pump station drawing hydraulic oil, the volume of hydraulic oil in the diversion channel 502 gradually decreases (elastic drum 17 returns to its original position and the extension cylinder 14 is limited by U-shaped frame 18), the support rod 6 on the inner support block 5 retracts, releasing the fixation of the bellows, the traction module 2 starts and drives the bellows to move to the left by a predetermined distance and then stops. Thus, the above actions of inner support, disconnection, cutting, switching, reconnection and drawing hydraulic oil are repeated to cut the bellows.

[0054] Example 2

[0055] Further optimizations were made based on Example 1.

[0056] See Figure 6 An annular inclined surface is provided on the left side of the secondary flow channel 501 to guide the extension tube 14 into the secondary flow channel 501.

[0057] Example 3

[0058] Based on Example 2, the function of increasing the contact area between the support rod 6 and the bellows is provided.

[0059] SeeFigure 6 An elastic head 21 is fixed to one end of the support rod 6 away from the central axis of the inner support member 4. This head is used to increase the area of ​​the support rod 6 and the corrugated pipe support by means of deformation, thereby improving the stability of the support rod 6 in supporting the corrugated pipe.

[0060] Example 4

[0061] Based on Example 3, a function is provided to improve the heat dissipation efficiency at the corrugated pipe cutting position.

[0062] See Figure 6 The inner support 4, inner support block 5 and support rod 6 are all made of metal. The elastic head 21 is a filled elastomer composite material. A thermally conductive silicone block is used here to transfer the heat from the corrugated pipe cut to the inner support 4 and inner support block 5, and guide the corrugated pipe cut to dissipate heat.

[0063] Example 5

[0064] Based on Example 4, the stability of the corrugated pipe during cutting is improved by applying tension to the position to be cut.

[0065] See Figure 6 It also includes a magnetic ring 22 and an electromagnet 23. The magnetic ring 22 and the electromagnet 23 are respectively fixed to the opposing sides of the inner support block 5 and the inner support member 4. The magnetic ring 22 and the electromagnet 23 are used to provide magnetic repulsion for the inner support block 5 and the inner support member 4, to maintain the stable distance between the inner support member 4 and the inner support block 5 during the process of cutting the corrugated pipe, and to provide tension for the position of the corrugated pipe to be cut, so that the position of the corrugated pipe to be cut is kept taut, and further reduce the vibration during the corrugated pipe cutting process.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A positioning and cutting device for the production of metal parts, characterized in that it comprises: The frame (1), traction module (2) and cutting module (3) are both located inside the frame (1). The frame (1) is provided with multiple inner support members (4) and inner support blocks (5). The inner support members (4) and inner support blocks (5) are used to penetrate into the corrugated pipe. The inner support members (4) and inner support blocks (5) are sealed and slidably connected with multiple evenly distributed support rods (6). The support rods (6) are used to support the corrugated pipe. The frame (1) is provided with a power mechanism that provides power for the movement of the inner support members (4) and the extension and retraction of the support rods (6) inside them. The inner support members (4) are provided with a communication mechanism that transmits power to the inner support blocks (5) and controls the extension and retraction of the support rods (6) inside them. The power mechanism includes: The assembly comprises a mounting bracket (7), a mounting plate (8), a motor (9), and a connecting member (10). The mounting bracket (7) is fixedly connected to the frame (1) and rotatably connected to the mounting plate (8). The motor (9) is fixedly connected to the frame (1) via a bracket, and the output shaft of the motor (9) is driven to the mounting plate (8) via a gear set. The inner support member (4) is fixedly connected to the mounting plate (8), and the central axis of the inner support member (4) intersects with but is not collinear with the central axis of the mounting plate (8). The intermediate connector (10) is rotatably connected to the mounting plate (8), the intermediate connector (10) is connected to an external hydraulic pump unit, the inner support (4) is provided with a main channel (401) and multiple branch channels (402), the branch channels (402) are connected to the main channel (401), the mounting plate (8) is provided with a channel connecting the main channel (401) and the intermediate connector (10), and the support rod (6) on the inner support (4) slides in a sealed manner within the adjacent branch channels (402); An electric push rod (11) is fixedly connected to the frame (1) by a bracket. The inner support block (5) is provided with a secondary flow channel (501) and multiple branch flow channels (502). The branch flow channels (502) are connected to the secondary flow channel (501). The support rod (6) on the inner support block (5) slides in a sealed manner in the adjacent branch flow channel (502). A sealing plate (16) is provided in the secondary flow channel (501). A second spring (161) is fixedly connected between the sealing plate (16) and the inner support block (5). The sealing plate (16) is used to seal the side of the secondary flow channel (501) close to the inner support member (4). The communication mechanism includes: The assembly includes a connecting rod (12), two connecting rings (13), an extension tube (14), and a plug (15). The connecting rod (12) is located within the main channel (401). The mounting plate (8) has a through hole for sealing and sliding connection of the connecting rod (12). The electric push rod (11) is used to push the connecting rod (12) to move. Both connecting rings (13) are fixedly connected to the connecting rod (12). A tension spring (121) is fixedly connected between one of the connecting rings (13) and the inner support member (4). The extension cylinder (14) is sealed and limited to sliding on the side away from the mounting plate (8) in the main channel (401). A first spring (141) is fixed between the connecting ring (13) on the other side and the extension cylinder (14). The plug (15) is fixed to the connecting rod (12). The plug (15) is used to block the extension cylinder (14) and squeeze the sealing plate (16). A locking component for limiting the extension cylinder (14) is provided in the inner support block (5).

2. The positioning and cutting device for metal parts production according to claim 1, characterized in that, The locking component includes: The elastic drum (17) and the U-shaped frame (18) are fixed to the inner support block (5), and one side of the convex surface of the elastic drum (17) faces the inner channel (501). The U-shaped frame (18) is fixed to the elastic drum (17). The extension cylinder (14) is provided with a limiting ring groove (181) on the side near the inner support block (5). The U-shaped frame (18) limits the extension cylinder (14) through the limiting ring groove (181).

3. The positioning and cutting device for metal parts production according to claim 1, characterized in that, The plug (15) is frustum shaped.

4. A positioning and cutting device for metal parts production according to claim 2, characterized in that, The secondary flow channel (501) has an annular inclined surface on the side near the inner support member (4) for guiding the extension cylinder (14) into the secondary flow channel (501).

5. A positioning and cutting device for metal parts production according to claim 2, characterized in that, The secondary channel (501) is sealed and slidably connected with a main sealing ring (19) for blocking the branch channel (502). The main sealing ring (19) is fixedly connected to the blocking disc (16) through a bracket. The connecting rod (12) is fixedly connected with a secondary sealing ring (20) located in the main channel (401). The secondary sealing ring (20) is used to block the branch channel (402).

6. A positioning and cutting device for metal parts production according to claim 5, characterized in that, An elastic head (21) is fixed to one end of the support rod (6) away from the central axis of the inner support member (4).

7. A positioning and cutting device for metal parts production according to claim 6, characterized in that, The inner support member (4), the inner support block (5) and the support rod (6) are all made of metal. The elastic head (21) is a filled elastomer composite material used to transfer the heat from the corrugated pipe cut to the inner support member (4) and the inner support block (5).

8. A positioning and cutting device for metal parts production according to claim 6, characterized in that it further includes... include: A magnetic ring (22) and an electromagnet (23) are fixed to the opposing sides of the inner support block (5) and the inner support member (4), respectively. The magnetic ring (22) and the electromagnet (23) are used to provide magnetic repulsion for the inner support block (5) and the inner support member (4).

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