Magnet wire cutting machine

Abstract

The invention discloses a magnet wire cutting machine, which relates to the field of wire cutting technology, and includes a cutting line, a feeding device and a base. The magnet blank is placed on the base, and the feeding device drives the cutting line to cut the magnet blank from top to bottom. The machine also includes an upper clamp, a lower clamp and a clamping device. The upper clamp is located above the cutting line to clamp the magnet blank from above, and is connected to the feeding device to rise and fall synchronously with the cutting line. The upper clamp can slide up and down to move up and down relative to the magnet blank when clamped. The lower clamp is located below the cutting line to clamp the magnet blank from below, and can be extended up and down to avoid the cutting line. The clamping device drives the upper clamp and the lower clamp to clamp and release the magnet blank respectively. By setting the upper and lower clamps, the magnet blank is clamped alternately during the cutting process, and there is no need to use glue to bond and fix the magnet blank. Therefore, there is no need to clean the glue after cutting, and the next round of magnet blank cutting can be carried out immediately, which can effectively reduce the process, reduce material consumption, and reduce costs.

Description

Technical Field

[0001] The invention relates to the technical field of wire cutting, and in particular to a magnet wire cutting machine. Background Art

[0002] In the process of producing magnets, the processed magnet blanks need to be cut into pieces, usually by wire cutting. In the traditional cutting process, glue is often used to bond the magnet blanks to the substrate, and then the magnet blanks are cut. At the end of the cutting, the substrate needs to withstand a certain degree of cutting. However, if glue is used to fix the magnet blanks, after cutting, the glue needs to be treated in a certain way before the cut magnet blanks can be removed. The substrate also needs to clean the glue before the next use. There are many production processes, more material consumption, and higher costs. Summary of the invention

[0003] In view of this, the present invention provides a magnet wire cutting machine, which does not need to use glue to fix the magnet blank to be cut. The magnet blank can be removed after cutting is completed, and the process of cleaning the glue can be avoided, which has low cost.

[0004] In order to achieve the above object, the present invention provides the following technical solutions.

[0005] The magnet wire cutting machine is used to cut magnet blanks, including a cutting wire, a feeding device and a base. The magnet blanks are placed on the base, and the feeding device drives the cutting wire to cut the magnet blanks from top to bottom. The magnet wire cutting machine also includes:

[0006] An upper clamp, which is located above the cutting line to clamp the magnet blank from above, and is connected to the feeding device to rise and fall synchronously with the cutting line, and can slide up and down to move up and down relative to the magnet blank when clamping;

[0007] A lower clamp, which is located below the cutting line to clamp the magnet blank from below and can be extended up and down to avoid the cutting line;

[0008] A clamping device, which is provided with two groups and corresponds to the upper clamp and the lower clamp respectively, so as to drive the upper clamp and the lower clamp to clamp and release the magnet blank respectively;

[0009] Before cutting the magnet blank, the lower clamp clamps the lower half of the magnet blank to fix the magnet blank, and the feeding device drives the cutting line and the upper clamp to descend synchronously to cut the upper half of the magnet blank. After the upper half of the magnet blank is cut, the upper clamp clamps the upper half of the magnet blank to fix the magnet blank, the lower clamp releases the lower half of the magnet blank and descends and retracts, and the cutting line descends to continue cutting the lower half of the magnet blank. After the lower half of the magnet blank is cut, the upper clamp releases the upper half of the magnet blank and resets as the cutting line rises, and the lower clamp extends and resets to clamp the lower half of the newly loaded magnet blank.

[0010] By setting the upper clamp and the lower clamp, the magnet blank is clamped during the cutting process, and there is no need to use glue to bond and fix the magnet blank. Therefore, there is no need to clean the glue after cutting, and the next round of magnet blank cutting can be carried out immediately, which can effectively reduce the process, reduce material consumption, and reduce costs. At the same time, the upper clamp and the lower clamp are clamped alternately, so that the cutting line will not collide with the clamp during cutting, and when the cutting line rises and resets, the upper clamp and the lower clamp are still clamped alternately, thereby ensuring that the magnet blank remains fixed throughout the process and improving the reliability of the equipment.

[0011] The lower fixture includes:

[0012] The first telescopic assembly comprises a first telescopic cylinder and a return spring, wherein the first telescopic cylinder is fixedly connected to the clamp driving device, and the return spring is respectively connected to the lower mounting member and the first telescopic cylinder to provide elastic force for the lower mounting member to return and extend;

[0013] A lower mounting member, which is provided with a sliding groove and is slidably connected to the first telescopic cylinder;

[0014] The lower sliding plate chain is used to clamp the magnet blank, and is composed of a plurality of sliding clamping plates which are slidably connected in series, and are slidably connected in the sliding groove so as to be unfolded and retracted, and one end of the lower sliding plate chain is fixedly connected to the driving clamping device;

[0015] The upper fixture includes:

[0016] The second telescopic assembly includes a telescopic plate, a second telescopic cylinder and a telescopic spring. The telescopic plate is slidably connected to the second telescopic cylinder so as to be able to slide up and down. The second telescopic cylinder is connected to the feeding device so as to be synchronously raised and lowered with the cutting line. The telescopic spring is respectively connected to the telescopic plate and the second telescopic cylinder so as to provide elastic force for the telescopic plate to pop out the second telescopic cylinder.

[0017] An upper mounting member, which is fixedly connected to the corresponding driving and clamping device and is provided with a sliding groove;

[0018] The upper sliding plate chain is used to clamp the magnet blank, and is composed of a plurality of sliding clamping plates that can slide in series, which are slidably connected in the sliding groove so as to be able to be expanded and retracted, and one end of which is fixedly connected to the telescopic plate;

[0019] Before cutting the magnet blank, the lower clamp extends to a preset position and clamps the magnet blank, and the upper clamp and the telescopic plate descend synchronously. When cutting the magnet blank, the telescopic plate abuts against the upper surface of the magnet blank and stops descending, the upper clamp descends along the cutting line and pushes the lower clamp to retract, the upper sliding plate chain unfolds along the sliding groove to clamp the magnet blank, and gradually increases the clamping area, the lower sliding plate chain remains clamped and retracts along the sliding groove to reduce the clamping area until the magnet blank is released. After the magnet blank is cut, the upper clamp resets and rises along the cutting line, the lower clamp resets and extends, the lower sliding plate chain unfolds along the sliding groove to clamp the magnet blank, and gradually increases the clamping area, the upper sliding plate chain remains clamped and retracts along the sliding groove to reduce the clamping area until the magnet blank is released, and the telescopic plate rises along the cutting line and disengages from the magnet blank surface.

[0020] Since the upper and lower clamps only clamp half of the magnet blank respectively, they may not provide sufficient clamping area during cutting, resulting in unstable clamping of the magnet blank. During the cutting process, the magnet blank may deviate or even fall off, thus affecting the cutting accuracy and posing a safety hazard to the operator. By setting up slidable upper and lower sliding plate chains, the upper and lower clamps can change the clamping area while clamping, so that the lower clamp reduces the clamping area to avoid the cutting line while increasing the clamping area of ​​the upper clamp, and always provides sufficient clamping for the magnet blank during the cutting process, thereby preventing the magnet blank from deviating or falling off when being cut.

[0021] The upper and lower sliding plate chains are both provided with isolation soft cloth, which covers the side in contact with the magnet blank. If the upper and lower sliding plate chains directly contact the magnet blank, the chips generated during cutting will be retained between each sliding clamp and the sliding groove along with the cutting fluid, resulting in increased friction and increased wear of the equipment. By providing isolation soft cloth to cover the upper and lower magnet blanks, they are effectively isolated and protected, which can reduce the chips entering between each sliding clamp and the sliding groove, thereby reducing the wear of the equipment.

[0022] Among them, the upper and lower clamps are both provided with a chip scraper, which is arranged on the side where the upper and lower sliding plate chains contact the magnet blank, so as to scrape off the chips attached to the contact surface between the upper and lower sliding plate chains and the magnet blank when unfolding or retracting. During cutting, the chips will splash around with the cutting fluid, and the contact surface between the upper and lower clamps and the magnet blank is easily stained with chips and cutting fluid. In this case, clamping may cause damage or slippage to the contact surface of the magnet blank. By setting a chip scraper to clean the contact surface between the upper and lower clamps and the magnet blank, the cutting fluid and chips attached to the contact surface are reduced, the possibility of damage and slippage of the contact surface between the clamp and the magnet blank is reduced, and the clamping reliability is improved.

[0023] The chip removal scraper is provided with a plurality of air jet holes, so as to jet and clean the contact surface between the upper and lower sliding plate chains and the magnet blank when scraping off the chips. By providing the air jet holes, the cleaning ability of the chip removal scraper is further improved.

[0024] The base is provided with a lifting cylinder and a loading platform. The loading platform is used to place the magnet blank. The lifting cylinder is connected to the loading platform to drive the loading platform to rise and fall. When the cutting line drops to the bottom of the magnet blank, the lifting cylinder drives the loading platform to drop to avoid the cutting line. By setting the lifting cylinder and the loading platform, when the cutting line cuts to the bottom of the magnet blank, the loading platform drops to avoid the cutting line, so that the loading platform will not be cut, and there is no need to set up a substrate for placing the magnet blank and bearing the cutting, thereby reducing the loss required for production.

[0025] Among them, the upper clamp also includes a mounting bracket for connecting to the feeding device, the mounting bracket is provided with an upper slide rail, the base is provided with a lower slide rail, the driving clamp device includes a driving clamp cylinder and a driving clamp slide for installing upper and lower mounting parts, the driving clamp slide is respectively slidably connected to the upper and lower slide rails, and the driving clamp slide is connected to the driving clamp cylinder to be driven by the driving clamp cylinder.

[0026] Among them, a contact pad is provided at the upper end of the lower mounting part. When the upper clamp descends along the cutting line, the mounting bracket contacts the contact pad to push the lower clamp to retract. If the lower clamp is pushed to retract by direct contact between the upper and lower mounting parts, long-term collision contact may cause damage to the upper and lower mounting parts. By providing a contact pad, when the upper clamp descends, the mounting bracket contacts the contact pad and thereby pushes the lower clamp to retract, thereby avoiding contact damage between the upper and lower mounting parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the magnet wire cutting machine of Example 1.

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the magnetic wire cutting machine of Example 1 from another perspective (part of the structure has been hidden for the convenience of display).

[0029] Figure 3This is a schematic diagram of the three-dimensional structure of the magnetic wire cutting machine of Example 2 (part of the structure has been hidden for the convenience of display).

[0030] Figure 4 This is an exploded view of the magnetic wire cutting machine of Example 2 (part of the structure has been hidden for the convenience of display).

[0031] Figure 5 This is an exploded view of the upper and lower clamps and the clamp driving device of Example 2.

[0032] Figure 6 for Figure 5 A magnified schematic diagram of center A.

[0033] Figure 7 The magnet wire cutting machine of Example 1 is Figure 2 Cross-sectional view of the state.

[0034] Figure 8 The magnet wire cutting machine of Example 2 is Figure 3 Cross-sectional view of the state.

[0035] Fig. 9 for Figure 8 A magnified schematic diagram of point B in the middle.

[0036] Reference numerals include:

[0037] Upper fixture 1, upper mounting member 11, sliding groove 111, upper sliding plate chain 12, sliding clamping plate 121, second telescopic assembly 13, telescopic plate 131, second telescopic cylinder 132, telescopic spring 133, isolation soft cloth 14, chip removal scraper 15, air injection hole 151, mounting bracket 16, upper slide rail 161;

[0038] Lower clamp 2, lower mounting member 21, contact pad 211, lower sliding plate chain 22, first telescopic cylinder 23, return spring 24;

[0039] Driving clamp device 3, driving clamp cylinder 31, driving clamp slide 32;

[0040] Feeding device 4, feeding cylinder 41, mounting seat 42;

[0041] Base 5, loading platform 51, lifting cylinder 52, lower slide rail 53;

[0042] Cutting wire 6, magnet blank 7, tensioning spring 8. DETAILED DESCRIPTION

[0043] The present invention is described in detail below in conjunction with specific embodiments. Example 1

[0044] like Figure 1 and Figure 2As shown, the magnet wire cutting machine of this embodiment includes a cutting wire 6, a feeding device 4 and a base 5. The base 5 is provided with a lower sliding rail 53. The magnet blank 7 is placed on the base 5. The feeding device 4 drives the cutting wire 6 to cut the magnet blank 7 from top to bottom. The feeding device 4 includes a feeding cylinder 41 and a mounting seat 42. The feeding cylinder 41 is fixedly connected to the mounting seat 42.

[0045] Combination Figure 2 and Figure 7 The magnet wire cutting machine of this embodiment also includes an upper clamp 1, a lower clamp 2 and a driving clamp device 3. The upper clamp 1 is provided with a mounting bracket 16, and the lower clamp 2 is provided with a contact pad 211. The driving clamp device 3 is provided with two groups and corresponds to the upper clamp 1 and the lower clamp 2 respectively, so as to drive the upper clamp 1 and the lower clamp 2 to clamp and release the magnet blank 7 respectively. The driving clamp device 3 includes a driving clamp cylinder 31 and a driving clamp slide 32 for installing the upper clamp 1 and the lower clamp 2. The driving clamp slide 32 is slidably connected with the mounting bracket 16 and the base 5 respectively, and the driving clamp cylinder 31 is connected with the driving clamp slide 32. The upper clamp 1 is located above the cutting line 6 to clamp the magnet blank 7 from above, and is connected with the mounting seat 42 through the mounting bracket 16 to rise and fall synchronously with the cutting line 6. The upper clamp 1 is slidably connected with the driving clamp slide 32 up and down, so that it can move up and down relative to the magnet blank 7 when clamping. The lower clamp 2 is located below the cutting line 6 to clamp the magnet blank 7 from below. The lower clamp 2 is provided with a first telescopic component so that it can be telescoped up and down to avoid the cutting line 6. The first telescopic component includes a first telescopic cylinder 23 and a reset spring 24. The lower clamp 2 is slidably connected to the first telescopic cylinder 23. The reset spring 24 is respectively connected to the lower clamp 2 and the first telescopic cylinder 23 to provide the elastic force required for the lower clamp 2 to reset and extend. In addition, a power source can also be set to drive the lower clamp 2 to rise and fall to avoid the cutting line 6, which is not specifically limited here.

[0046] Before cutting the magnet stock 7, the driving clamp cylinder 31 drives the lower clamp 2 to clamp the lower half of the magnet stock 7 to fix the magnet stock 7, and the feeding cylinder 41 drives the cutting line 6 and the upper clamp 1 to descend synchronously to cut the upper half of the magnet stock 7. After the upper half of the magnet stock 7 is cut, the upper clamp 1 clamps the upper half of the magnet stock 7 to fix the magnet stock 7, the lower clamp 2 releases the lower half of the magnet stock 7, the mounting bracket 16 abuts against the contact pad 211 to push the lower clamp 2 to descend and retract, and the cutting line 6 descends to continue cutting the lower half of the magnet stock 7. After the lower half of the magnet stock 7 is cut, the upper clamp 1 releases the upper half of the magnet stock 7, and resets with the rising of the cutting line 6, and the lower clamp 2 extends out and resets to clamp the lower half of the newly loaded magnet stock 7.

[0047] By setting the upper clamp 1 and the lower clamp 2, the magnet stock 7 is clamped during the cutting process, and there is no need to use glue to bond and fix the magnet stock 7. Therefore, there is no need to clean the glue after cutting, and the next round of magnet stock 7 cutting can be carried out immediately, which can effectively reduce the process, reduce material consumption, and reduce costs. At the same time, the upper clamp 1 and the lower clamp 2 are alternately clamped, so that the cutting line 6 will not collide with the clamp during cutting, and when the cutting line 6 rises and resets, the upper clamp 1 and the lower clamp 2 are still alternately clamped, thereby ensuring that the magnet stock 7 remains fixed throughout the whole process, improving the reliability of the equipment. Example 2

[0048] Combination Figure 3-Figure 5 On the basis of Example 1, the lower clamp 2 of this embodiment includes a lower mounting member 21 and a lower sliding plate chain 22, and the first telescopic cylinder 23 is fixedly connected to the driving clamp slide 32 of the corresponding driving clamp device 3, and is provided with a sliding groove 111. The lower sliding plate chain 22 is used to clamp the magnet blank 7, and is composed of a plurality of slidable sliding clamps 121 connected in series, which are slidably connected in the sliding groove 111 so as to be unfoldable and retractable, and one end of which is fixedly connected to the driving clamp slide 32. The lower mounting member 21 is slidably connected to the first telescopic cylinder 23, and the reset spring 24 is respectively connected to the lower mounting member 21 and the first telescopic cylinder 23 to provide the elastic force required for the lower mounting member to reset and extend;

[0049] The upper clamp 1 of this embodiment includes a second telescopic assembly 13, an upper mounting member 11 and an upper sliding plate chain 12, the second telescopic assembly 13 includes a telescopic plate 131, a second telescopic cylinder 132 and a telescopic spring 133, the telescopic plate 131 is slidably connected to the second telescopic cylinder 132 so as to slide up and down, the second telescopic cylinder 132 is connected to the feeding device 4 so as to rise and fall synchronously with the cutting line 6, and the telescopic spring 133 is respectively connected to the telescopic plate 131 and the second telescopic cylinder 132 to provide the elastic force required for the telescopic plate 131 to pop out of the second telescopic cylinder 132. The upper mounting member 11 is fixedly connected to the driving clamp slide 32 of the corresponding driving clamp device 3, and is provided with a sliding groove 111. The upper sliding plate chain 12 is used to clamp the magnet blank 7, and is composed of a plurality of slidable sliding clamps 121 connected in series, which are slidably connected in the sliding groove 111 so as to be unfolded and retracted, and one end of which is fixedly connected to the telescopic plate 131. The mounting bracket 16 of the present embodiment is provided with an upper slide rail 161 , and the clamping slide seat 32 is slidably connected to the upper slide rail 161 and the lower slide rail 53 , respectively.

[0050] like Figure 8As shown, before cutting the magnet stock 7, the lower clamp 2 extends to a preset position and clamps the magnet stock 7, and the preset position can be adjusted according to the size of the magnet stock 7. When cutting the magnet stock 7, the upper clamp 1 and the telescopic plate 131 descend synchronously with the cutting line 6, the upper clamp 1 pushes the lower clamp 2 to retract, the telescopic plate 131 descends until it abuts against the upper surface of the magnet stock 7 and then stops descending, and the other parts of the upper clamp 1 continue to descend, and one end of the upper sliding plate chain 12 (set as the upper fixed end) is fixed to the upper surface of the magnet stock 7 with the telescopic plate 131, and the other end (set as the upper movable end) descends with the upper mounting member 11. Driven by the upper mounting member 11, the upper fixed end pulls the upper movable end to cause the upper sliding plate chain 12 to expand along the sliding groove 111. After expanding to a preset degree, (The preset degree can be adjusted according to the size of the magnet blank 7), for example, the length of the three sliding clamps 121 is unfolded, the driving and clamping cylinder 31 drives the upper sliding plate chain 12 to clamp the magnet blank 7, and continues to unfold to gradually increase the clamping area, while the lower sliding plate chain 22 maintains clamping, one end (set as the lower fixed end) is fixed under the magnet blank 7 with the driving and clamping slide 32, and the other end (set as the lower movable end) descends with the lower mounting member 21, and driven by the lower mounting member 21, the lower fixed end pushes the lower movable end to retract along the sliding groove 111 to reduce the clamping area until the magnet blank 7 is released. After the cutting of the magnet stock 7 is completed, the upper clamp 1 is reset and raised along with the cutting line 6, the lower clamp 2 is reset and extended, and the lower mounting part 21 is raised, driving the lower fixed end to pull the lower movable end to expand along the sliding groove 111. After expanding to a preset degree, the clamping cylinder 31 drives the lower sliding plate chain 22 to re-clamp the magnet stock 7 and gradually increase the clamping area. The upper sliding plate chain 12 remains clamped. Driven by the upper mounting part 11, the upper fixed end pushes the upper movable end to retract along the sliding groove 111 to reduce the clamping area until the magnet stock 7 is released. After the upper clamp 1 releases the magnet stock 7, the telescopic plate 131 rises along the cutting line 6 and disengages from the surface of the magnet stock 7.

[0051] Since in Example 1, the upper clamp 1 and the lower clamp 2 only clamp half of the magnet stock 7 respectively, sufficient clamping area may not be provided during cutting, resulting in unstable clamping of the magnet stock 7. During the cutting process, the magnet stock 7 may deviate or even fall off, thereby affecting the cutting accuracy and posing a safety hazard to the operator. In this embodiment, by setting a slidable upper and lower sliding plate chain 22, the upper and lower clamps 2 can change the clamping area while clamping, so that the lower clamp 2 increases the clamping area of ​​the upper clamp 1 while reducing the clamping area to avoid the cutting line 6, so that sufficient clamping is always provided for the magnet stock 7 during the cutting process, thereby preventing the magnet stock 7 from deviating or falling off when being cut.

[0052] During cutting, the chips will splash around with the cutting fluid, and the contact surfaces of the upper clamp 1 and the lower clamp 2 with the magnet blank 7 are easily stained with chips and cutting fluid. In this case, clamping may cause damage or slippage to the contact surfaces of the magnet blank 7. Figure 6 As shown, the upper clamp 1 and the lower clamp 2 are both provided with a chip scraper 15, each chip scraper 15 is fixedly connected to the corresponding upper mounting member 11 and the lower mounting member 21, and is specifically located on the side where the upper sliding plate chain 12 and the lower sliding plate chain 22 contact the magnet blank 7, so as to scrape off the chips attached to their contact surfaces when unfolding or retracting. The chip scraper 15 is also provided with a plurality of jet holes 151 and connected to an external jet device to spray air while scraping off the chips, further improving the chip cleaning ability of the chip scraper 15. By setting the chip scraper 15 to clean the contact surface between the upper and lower clamps 2 and the magnet blank 7, the cutting fluid and chips attached to the contact surface are reduced, the possibility of damage and slipping of the contact surface between the clamp and the magnet blank 7 is reduced, and the clamping reliability is improved.

[0053] If the upper sliding plate chain 12 and the lower sliding plate chain 22 directly contact the magnet blank 7, the chips generated during cutting will be retained between each sliding clamping plate 121 and the sliding groove 111 along with the cutting fluid, resulting in increased friction and increased wear of the equipment. Figure 5 As shown, both the upper sliding plate chain 12 and the lower sliding plate chain 22 are provided with an isolation soft cloth 14 and a tension spring 8. The isolation soft cloth 14 covers the side in contact with the magnet blank 7. The tension spring 8 is respectively connected to the upper moving end and the lower moving end to tension the isolation soft cloth 14. By providing the isolation soft cloth 14 to cover the upper sliding plate chain 12 and the lower sliding plate chain 22, they are effectively isolated and protected, which can reduce the chips entering the sliding groove 111 and between each sliding clamping plate 121, thereby reducing the wear of the equipment.

[0054] like Fig. 9 As shown, the base 5 is provided with a lifting cylinder 52 and a loading platform 51. The loading platform 51 is used to place the magnet stock 7. The lifting cylinder 52 is connected to the loading platform 51 to drive the loading platform 51 to rise and fall. When the cutting line 6 drops to the bottom of the magnet stock 7, the lifting cylinder 52 drives the loading platform 51 to drop to avoid the cutting line 6. At this time, the magnet stock 7 has been clamped by the upper clamp 1, and the dropping of the loading platform 51 will not cause the magnet stock 7 to lose support. By setting the lifting cylinder 52 and the loading platform 51, when the cutting line 6 cuts to the bottom of the magnet stock 7, the loading platform 51 drops to avoid the cutting line 6, so that the loading platform 51 will not be cut, and there is no need to set up a substrate for placing the magnet stock 7 and bearing the cutting, thereby reducing the loss required for production.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A magnet wire cutting machine, used for cutting magnet blanks, comprising a cutting wire, a feeding device and a base, the magnet blanks are placed on the base, the feeding device drives the cutting wire to cut the magnet blanks from top to bottom, and the feature is that include: An upper clamp, which is located above the cutting line to clamp the magnet blank from above, and is connected to the feeding device to rise and fall synchronously with the cutting line, and can slide up and down to move up and down relative to the magnet blank when clamping; A lower clamp, which is located below the cutting line to clamp the magnet blank from below and can be extended up and down to avoid the cutting line; A clamping device, which is provided with two groups and corresponds to the upper clamp and the lower clamp respectively, so as to drive the upper clamp and the lower clamp to clamp and release the magnet blank respectively; Before cutting the magnet blank, the lower clamp clamps the lower half of the magnet blank to fix the magnet blank, and the feeding device drives the cutting line and the upper clamp to descend synchronously to cut the upper half of the magnet blank; After the upper half of the magnet blank is cut, the upper clamp clamps the upper half of the magnet blank to fix the magnet blank, the lower clamp releases the lower half of the magnet blank and descends and retracts, and the cutting line descends to continue cutting the lower half of the magnet blank; After the lower half of the magnet blank is cut, the upper clamp releases the upper half of the magnet blank and resets along with the cutting line, and the lower clamp extends and resets to clamp the lower half of the newly loaded magnet blank; The lower fixture includes: The first telescopic assembly comprises a first telescopic cylinder and a return spring, wherein the first telescopic cylinder is fixedly connected to the clamp driving device, and the return spring is respectively connected to the lower mounting member and the first telescopic cylinder to provide elastic force for the lower mounting member to return and extend; A lower mounting member, which is provided with a sliding groove and is slidably connected to the first telescopic cylinder; The lower sliding plate chain is used to clamp the magnet blank, and is composed of a plurality of sliding clamping plates connected in series, which are slidably connected in the sliding groove so as to be unfolded and retracted, and one end of which is fixedly connected to the driving clamping device; The upper fixture includes: The second telescopic assembly includes a telescopic plate, a second telescopic cylinder and a telescopic spring. The telescopic plate is slidably connected to the second telescopic cylinder so as to be able to slide up and down. The second telescopic cylinder is connected to the feeding device so as to be synchronously raised and lowered with the cutting line. The telescopic spring is respectively connected to the telescopic plate and the second telescopic cylinder so as to provide elastic force for the telescopic plate to pop out the second telescopic cylinder. An upper mounting member, which is fixedly connected to the corresponding driving and clamping device and is provided with a sliding groove; The upper sliding plate chain is used to clamp the magnet blank, and is composed of a plurality of sliding clamping plates that can slide in series, which are slidably connected in the sliding groove so as to be able to be expanded and retracted, and one end of which is fixedly connected to the telescopic plate; Before cutting the magnet blank, the lower clamp extends to a preset position and clamps the magnet blank, and the upper clamp and the telescopic plate descend synchronously; When cutting the magnet blank, the telescopic plate abuts against the upper surface of the magnet blank and stops descending, the upper clamp descends along the cutting line and pushes the lower clamp to retract, the upper sliding plate chain unfolds along the sliding groove to clamp the magnet blank and gradually increases the clamping area, the lower sliding plate chain remains clamped and retracts along the sliding groove to reduce the clamping area until the magnet blank is released; After the cutting of the magnet blank is completed, the upper clamp rises with the cutting line, the lower clamp is reset and extended, the lower sliding plate chain is expanded along the sliding groove to clamp the magnet blank and gradually increase the clamping area, the upper sliding plate chain remains clamped and retracts along the sliding groove to reduce the clamping area until the magnet blank is released, and the telescopic plate rises with the cutting line and breaks away from the contact with the magnet blank surface.

2. The magnet wire cutting machine according to claim 1, characterized in that: Both the upper and lower sliding plate chains are provided with isolation soft cloth, which covers the side in contact with the magnet blank.

3. The magnet wire cutting machine according to claim 1, characterized in that: The upper and lower clamps are both provided with a chip scraper, which is arranged on the side where the upper and lower sliding plate chains contact the magnet blank, so as to scrape off the chips attached to the contact surface of the upper and lower sliding plate chains and the magnet blank when unfolding or retracting.

4. The magnet wire cutting machine according to claim 3, characterized in that: The chip removal scraper is provided with a plurality of air jet holes, so as to jet and clean the contact surfaces between the upper and lower sliding plate chains and the magnet blank when scraping the chips.

5. The magnet wire cutting machine according to claim 1, characterized in that: The base is provided with a lifting cylinder and a loading platform. The loading platform is used to place the magnet blank. The lifting cylinder is connected to the loading platform to drive the loading platform to rise and fall. When the cutting line drops to the bottom of the magnet blank, the lifting cylinder drives the loading platform to drop to avoid the cutting line.

6. The magnet wire cutting machine according to claim 1, characterized in that: The upper clamp also includes a mounting bracket for connecting to the feeding device, the mounting bracket is provided with an upper slide rail, the base is provided with a lower slide rail, the driving clamp device includes a driving clamp cylinder and a driving clamp slide for installing upper and lower mounting parts, the driving clamp slide is respectively slidably connected to the upper and lower slide rails, and the driving clamp slide is connected to the driving clamp cylinder to be driven by the driving clamp cylinder.

7. The magnet wire cutting machine according to claim 6, characterized in that: A contact pad is provided at the upper end of the lower mounting piece, and when the upper clamp descends along with the cutting line, the mounting bracket contacts the contact pad to push the lower clamp to retract.

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