A fixture for a bending machine for an isolation structure of a filter

Abstract

The present invention relates to the technical field of filters, and discloses a fixture for a bending machine for an isolation structure of a filter, comprising a limit box and a reference block fixed to the top surface of the limit box, the limit box is provided with limit slots at four vertical apex positions, the limit box is provided with a correction mechanism for driving a semi-finished shielding cover to be centered through the limit slots, the correction mechanism comprises a driving straight rod horizontally rotatably mounted on the inner side wall opposite to the limit slot, a limiting cross bar fixed to the side wall close to the four driving straight rods, and a limiting vertical rod vertically fixed to the end of the limiting cross bar away from the driving straight rod; a synchronization mechanism for making the driving straight rod rotate synchronously is provided inside the limit box. The present application has the effect of improving the isolation structure of the filter, which is not easy to be placed at the center of the fixture for bending.

Description

Technical Field

[0001] The invention relates to the technical field of filters, and in particular to a tooling fixture of a bending machine for an isolation structure of a filter. Background Art

[0002] The filter is a filter circuit composed of capacitors, inductors and resistors. It can effectively filter out the frequency point of a specific frequency in the power line or the frequency outside the frequency point, so as to obtain a power signal of a specific frequency or a power signal after eliminating a specific frequency. During the use of the filter, multiple filters will affect each other and produce high-frequency coupling. Therefore, the filter needs to be isolated and resonated through a tuning cover. Generally, an isolation cover is used for isolation.

[0003] For example, a Chinese utility model patent with authorization announcement number CN214560013U discloses a tooling fixture for processing hardware components with a rotating function, which includes a base and a working frame. A water frame is arranged on the inner side above the base, a rotating shaft is rotatably installed on the inner side of the water frame, a water pump is installed on the left bottom of the water frame, a bidirectional screw rod is rotatably installed on the inner side of the working frame, a slide plate is threadedly connected to the outer side of the bidirectional screw rod, a connecting frame is welded at the lower right side of the working frame, connecting rods are welded on the inner side of the slide plates, clamping plates are movably hinged on the inner side of the connecting rods, and anti-slip platforms are fixed on the inner side of the clamping plates.

[0004] In view of the above-mentioned related technologies, the inventor believes that the hardware processing fixture with a rotating function effectively clamps and fixes the small hardware box through the clamping plate and the anti-slip table, but when the isolation cover is bent, the isolation cover must be placed in the center of the fixture for bending. The hardware processing fixture with a rotating function uses the clamping plate and the anti-slip table to clamp and fix the semi-finished isolation cover, so that the isolation cover is generally not easy to be placed in the center of the fixture, resulting in a large gap between the edges of the isolation cover folded by the bending machine, affecting the isolation effect of the isolation cover. Summary of the invention

[0005] In order to improve the problem that the isolation structure of the filter is not easy to be placed in the center of the tooling fixture, the present application provides a tooling fixture of a bending machine for the isolation structure of the filter.

[0006] The present application provides a fixture for a bending machine for an isolation structure of a filter, which adopts the following technical solution:

[0007] A tooling fixture for a bending machine for an isolation structure of a filter, comprising a limit box and a reference block fixed to the top surface of the limit box, wherein the limit box is provided with limit slots at four vertical top corner positions, and the limit box is provided with a correction mechanism for driving a semi-finished shielding cover to be centered through the limit slots, wherein the correction mechanism comprises a driving straight rod horizontally rotatably mounted on an inner side wall opposite to the limit slot, a limiting cross bar fixed to side walls adjacent to four driving straight rods, and a limiting vertical rod vertically fixed to the end of the limiting cross bar away from the driving straight rod; a synchronization mechanism for making the driving straight rods rotate synchronously is provided inside the limit box.

[0008] By adopting the above technical solution, the synchronization mechanism drives the limiting horizontal rod and the limiting vertical rod to tilt up by driving the straight rod, and the limiting horizontal rod and the limiting vertical rod at the four top corner positions in the vertical direction of the limiting box abut against the notch of the semi-finished shielding cover, so that the shielding cover is located at the center position of the top surface of the reference block. At this time, the bending work can be carried out, which improves the problem that the isolation structure of the filter is not easy to be placed in the center of the tooling fixture for bending.

[0009] Optionally, the synchronization mechanism includes a threaded straight rod rotatably installed inside the limit box along the vertical direction, a limit disk threadedly connected to the circumference of the threaded straight rod, a plurality of hydraulic cylinders fixedly connected to the bottom surface of the limit disk and the bottom surface of the limit box, a wire take-up pulley coaxially fixed to the circumference of the threaded straight rod, and a steel wire strand wound around the circumference of each of the driving straight rods, wherein the end of the steel wire strand is fixed to the circumference of the wire take-up pulley.

[0010] By adopting the above technical solution, the hydraulic cylinder drives the limit disc to move vertically upward, the limit disc drives the supporting pulley to rotate through the threaded straight rod, and the supporting pulley drives several driving straight rods to rotate through the steel wire rope, thereby achieving the effect of synchronous rotation of several driving straight rods.

[0011] Optionally, a pressing mechanism is provided above the reference block for pressing the semi-finished shielding cover against the top surface of the reference block, the pressing mechanism includes a plurality of gripping suction cups abutting against the top surface of the shielding cover and a lifting plate fixed to the top of the plurality of gripping suction cups, and a driving mechanism is provided on the outside of the limit box for driving the lifting plate to slide.

[0012] By adopting the above technical solution, before the shielding cover semi-finished product is bent, the gripping suction cup is used to press the shielding cover semi-finished product against the surface of the reference block so that it can be placed in the bending position of the bending machine for bending; after the shielding cover semi-finished product is bent, the gripping suction cup is used to absorb the bent shielding cover semi-finished product, and then the bent shielding cover semi-finished product is taken out from the surface of the reference block.

[0013] Optionally, a rotating mechanism for allowing the lifting plate, the limiting box and the reference block to rotate is provided on the outside of the limiting box, and the rotating mechanism includes a supporting box installed above the lifting plate, a supporting straight rod rotatably installed at the bottom of the supporting box, a supporting box installed below the limiting box and a supporting straight rod rotatably installed at the top of the supporting box, and a control mechanism for driving the supporting straight rod to rotate synchronously is provided between the supporting box and the supporting box.

[0014] By adopting the above technical solution, the bending work of the semi-finished shielding cover is to bend the four sides of the semi-finished shielding cover. The rotating mechanism enables the semi-finished shielding cover to be bent at any time, which is different from rotating the entire tooling fixture to adjust the angle of the semi-finished shielding cover. The setting of the rotating mechanism makes the bending work of the semi-finished shielding cover more time-saving and labor-saving.

[0015] Optionally, the driving mechanism includes a telescopic box body 1 fixed to the bottom surface of the support box body, a telescopic box body 2 fixed to the top surface of the support box body, a telescopic square tube fixed to the side wall of the telescopic box body 2 facing away from the support box body, and a triangular inclined block passing through the telescopic square tube, and the side wall of the telescopic box body 1 facing away from the support box body is vertically provided with a plurality of ratchet grooves, the inner bottom surface of the ratchet groove is inclined, the bottom surface of the triangular inclined block is inclined, and the bottom surface of the triangular inclined block is in contact with the inner bottom surface of the ratchet groove.

[0016] By adopting the above technical solution, the support box is manually pressed, and the telescopic box one is gradually retracted into the telescopic box two, so as to shorten the distance between the support box and the supporting box, until the gripping suction cup at the bottom of the lifting plate absorbs the semi-finished shielding cover, and the support box is not prone to rebound.

[0017] Optionally, openings are provided at the ends close to the telescopic box body 1 and the telescopic box body 2, and the control mechanism includes a telescopic sleeve rod rotating on the inner top surface of the telescopic box body 1, a telescopic sleeve rotating on the inner bottom surface of the telescopic box body 2, a synchronization component 1 arranged between the telescopic sleeve rod and the supporting straight rod, and a synchronization component 2 arranged between the telescopic sleeve and the supporting straight rod, the telescopic sleeve rod is inserted into the telescopic sleeve, and a limiting mechanism for the synchronous rotation of the telescopic sleeve rod and the telescopic sleeve is provided on the inner side of the telescopic sleeve.

[0018] By adopting the above technical solution, telescopic box body 1 is inserted into telescopic box body 2, and the arrangement of the telescopic sleeve rod and the telescopic sleeve in the control mechanism ensures that even if telescopic box body 1 and telescopic box body 2 are in the telescopic state, the control mechanism always drives the supporting straight rod and the supporting straight rod to rotate synchronously.

[0019] Optionally, the synchronization component 1 includes a support pulley coaxially fixed to the end of the support straight rod and the telescopic sleeve, and a support belt jointly sleeved on the circumference of the two support pulleys; the synchronization component 2 includes a support pulley coaxially fixed to the end of the support straight rod and the telescopic sleeve, and a support belt jointly sleeved on the circumference of the two support pulleys.

[0020] By adopting the above technical scheme, a synchronous component is provided with a support pulley and a support belt to realize the synchronous rotation of the support straight rod and the telescopic sleeve; a synchronous component is provided with a support pulley and a support belt to realize the synchronous rotation of the support straight rod and the telescopic sleeve, and then the telescopic sleeve and the telescopic sleeve rotate synchronously through the restriction of the limiting mechanism, thereby realizing the synchronous rotation of the support straight rod and the support straight rod.

[0021] Optionally, a guide groove is formed on the circumference of the telescopic sleeve rod along its length direction, and the limiting mechanism includes a guide protrusion fixedly mounted on the inner circumference of the telescopic sleeve, and the guide protrusion is clamped on the circumference of the telescopic sleeve through the guide groove.

[0022] By adopting the above technical solution, the guide groove and the guide protrusion are arranged so that the telescopic sleeve can be vertically slidably arranged inside the telescopic sleeve, and the telescopic sleeve can rotate synchronously with the telescopic sleeve.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The synchronization mechanism drives the limiting horizontal rod and the limiting vertical rod to tilt up by driving the straight rod, and the limiting horizontal rod and the limiting vertical rod at the four top corners of the limiting box in the vertical direction abut against the notch of the semi-finished shielding cover, so that the shielding cover is located at the center of the top surface of the reference block, improving the problem that the isolation structure of the filter is not easy to be placed at the center of the fixture for bending;

[0025] 2. The bending work of the semi-finished shield cover is to bend the four sides of the semi-finished shield cover. The rotating mechanism enables the semi-finished shield cover to be bent at any time. Different from rotating the entire fixture to adjust the angle of the semi-finished shield cover, the setting of the rotating mechanism makes the bending work of the semi-finished shield cover more time-saving and labor-saving;

[0026] 3. A support pulley and a support belt are provided in a synchronous component to realize the synchronous rotation of the support straight rod and the telescopic sleeve; a support pulley and a support belt are provided in a synchronous component to realize the synchronous rotation of the support straight rod and the telescopic sleeve, and then the telescopic sleeve and the telescopic sleeve rotate synchronously through the restriction of the limit mechanism, so as to realize the synchronous rotation of the support straight rod and the support straight rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional schematic diagram of the supporting box and the retaining box in the embodiment of the present application.

[0029] Figure 3 It is a diagram of the internal structure of the limit box in the embodiment of the present application.

[0030] Figure 4 It is an assembly diagram of an embodiment of the present application.

[0031] Figure numerals: 11, support box; 12, support box; 13, telescopic box one; 14, telescopic box two; 15, ratchet groove; 16, telescopic square tube; 17, triangular inclined block; 18, compression spring; 19, square tube through hole; 20, telescopic cylinder; 21, box through hole one; 22, telescopic sleeve rod; 23, handle; 24, box through hole two; 25, telescopic sleeve; 26, guide groove; 27, guide protrusion; 28, rotating through hole one; 29, support straight rod; 30, support pulley; 31. Support belt; 32. Lifting plate; 33. Grabbing suction cup; 34. Rotating through hole 2; 35. Support straight rod; 36. Support pulley; 37. Support belt; 38. Limit box; 40. Reference block; 41. Limit through groove; 42. Drive through hole; 43. Drive straight rod; 44. Limit horizontal rod; 45. Limit vertical rod; 46. Limit circular hole; 47. Threaded straight rod; 48. Limit disc; 49. Threaded through hole; 50. Hydraulic cylinder; 51. Wire rope; 52. Take-up pulley. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a fixture for a bending machine for an isolation structure of a filter. Figure 1-3As shown, the fixture of the bending machine for the isolation structure of the filter includes a support box 11 and a support box 12 arranged above the support box 11, and the support box 12 is arranged opposite to the support box 11. A telescopic box 13 is fixed in the vertical direction at the bottom surface of the support box 12 near the rear side of itself, and the position where the support box 12 is combined with the telescopic box 13 is connected, and the telescopic box 13 is a hollow box structure with an opening on the bottom surface. A telescopic box 2 14 is fixed in the vertical direction at the top surface of the support box 11 near the rear side of itself, and the position where the support box 11 is combined with the telescopic box 2 14 is connected, and the telescopic box 2 14 is a hollow box structure with an opening on the top surface. The telescopic box 13 is inserted into the interior of the telescopic box 2 14 through the opening on the top surface of the telescopic box 2 14, so that the telescopic box 13 is vertically slidably arranged inside the telescopic box 2 14, and the bottom of the telescopic box 13 is connected with the top of the telescopic box 2 14.

[0034] Reference Figure 1-3 As shown, the side wall of the telescopic box body 13 away from the supporting box body 12 is vertically provided with a plurality of ratchet grooves 15, and the inner bottom surfaces of the plurality of ratchet grooves 15 are inclined from top to bottom toward the direction away from the supporting box body 12. The side wall of the telescopic box body 2 14 away from the supporting box body 11 is fixed with a telescopic square tube 16, and the telescopic square tube 16 is located at a position of the side wall of the telescopic box body 2 14 near its own top. The telescopic square tube 16 is provided with an opening on the side wall close to the telescopic box body 13, and the telescopic square tube 16 is penetrated with a triangular oblique block 17 through its own opening. The bottom surface of the triangular oblique block 17 is inclined from top to bottom toward the direction away from the supporting box body 11, and a compression spring 18 is fixedly connected between the side wall of the triangular oblique block 17 away from the supporting box body 12 and the bottom of the groove of the telescopic square tube 16 away from the supporting box body 12, and the bottom surface of the triangular oblique block 17 fits with the inner bottom surface of the ratchet groove 15; the telescopic square tube 16 is provided with a square tube through hole 19 at the bottom of the tube away from the opening, and the telescopic square tube 16 is penetrated with a telescopic cylinder 20 through the square tube through hole 19, and the end of the telescopic cylinder 20 close to the supporting box body 12 is fixed to the side wall of the triangular oblique block 17, and the end of the telescopic cylinder 20 away from the triangular oblique block 17 passes through the telescopic square tube 16.

[0035] Reference Figure 1-3As shown, a box through hole 121 is provided on the inner top surface of the telescopic box 13, and a telescopic sleeve rod 22 is passed through the box through hole 121. The telescopic sleeve rod 22 is rotatably mounted on the inner top surface of the telescopic box 13 through a bearing; the top end of the telescopic sleeve rod 22 passes through the box through hole 121 and passes out of the telescopic box and is fixed with a handle 23. A box through hole 24 is provided on the inner bottom surface of the telescopic box 14, and a telescopic sleeve 25 is passed through the box through hole 24. The telescopic sleeve 25 is rotatably mounted on the inner bottom surface of the telescopic box 14 through a bearing. The top end of the telescopic sleeve 22 is inserted into the telescopic sleeve 25 through the opening at the top of the telescopic sleeve 25. A guide groove 26 is provided on the circumference of the telescopic sleeve 22 along its length direction. A guide protrusion 27 is fixed to the inner circumference of the telescopic sleeve 25. The guide protrusion 27 is clamped to the circumference of the telescopic sleeve 25 through the guide groove 26. In this way, the telescopic sleeve 22 can slide vertically inside the telescopic sleeve 25, and the telescopic sleeve 25 can rotate synchronously with the telescopic sleeve 22.

[0036] Reference Figure 1-3 As shown, a rotation hole 28 is provided at the bottom surface of the support box 12 near the front side thereof, and a support straight rod 29 is passed through the rotation hole 28 through the support box 12, and the support straight rod 29 is rotatably installed at the bottom of the support box 12 through a bearing. A support pulley 30 is coaxially fixed to the top of the support straight rod 29 and the telescopic sleeve rod 22, and a circle of support belt 31 is commonly sleeved on the outer circumference of the two support pulleys 30. A lifting plate 32 is horizontally fixed to the bottom end of the support straight rod 29, and gripping suction cups 33 are vertically fixed to the bottom surface of the lifting plate 32 near the four top corners. A rotation hole 24 is provided at the top surface of the support box 11 near the front side thereof, and a support straight rod 35 is passed through the rotation hole 24 through the support box 11, and the support straight rod 35 is rotatably installed at the top of the support box 11 through a bearing. A support pulley 36 is coaxially fixed to the bottom end of the support straight rod 35 and the telescopic sleeve 25 , and a circle of support belt 37 is commonly sleeved on the outer circumference of the two support pulleys 36 , so as to achieve synchronous rotation of the support straight rod 29 and the support straight rod 35 .

[0037] Reference Figure 1-3As shown, a limiting box 38 is coaxially fixed to the top of the support straight rod 35, a reference block 40 is fixed to the top surface of the limiting box 38, and limiting through slots 41 are provided at the four vertical corners of the limiting box 38. A driving through hole 42 is provided on the opposite inner side walls of the limiting through slot 41 in the vertical direction, and a driving straight rod 43 is passed through the driving through hole 42 of the limiting box 38, and the driving straight rod 43 is rotatably installed inside the limiting box 38 through a bearing. A limiting cross bar 44 is horizontally fixed to the side walls adjacent to the four driving straight rods 43, and a limiting vertical rod 45 is vertically fixed to the end of the limiting cross bar 44 away from the driving straight rod 43. A limiting circular hole 46 is provided at the exact center of the inner bottom surface of the limiting box 38, and a threaded straight rod 47 is passed through the limiting circular hole 46 of the limiting box 38, and the threaded straight rod 47 is rotatably installed inside the limiting box through a bearing.

[0038] Reference Figure 1-3 As shown, a limit disc 48 is vertically slidably arranged inside the limit box 38, and a threaded through hole 49 is opened in the limit disc 48 along the length direction of the threaded straight rod 47. The limit disc 48 is threadedly connected to the circumference of the threaded straight rod 47 through the threaded through hole 49. Two hydraulic cylinders 50 are vertically fixed to the bottom surface of the limit box 38, and the output shafts of the two hydraulic cylinders 50 are fixed to the bottom surface of the limit disc 48. The two hydraulic cylinders 50 are respectively arranged on both sides of the threaded straight rod 47. A steel strand 51 is wound around the circumference of the driving straight rod 43, and two take-up pulleys 52 are coaxially fixed to the circumference of the threaded straight rod 47 along its own length direction. The ends of the two steel strands 51 at diagonal positions inside the limit box 38 away from the driving straight rod 43 are fixed to the circumference of the same take-up pulley 52.

[0039] The implementation principle of the jig of the bending machine for the isolation structure of a filter in the embodiment of the present application is as follows: first, the cut shielding cover semi-finished product is placed on the top surface of the reference block 40, and then the support box 12 is manually pressed, and the telescopic box 1 13 is gradually retracted into the inside of the telescopic box 2 14, so as to shorten the distance between the support box 12 and the support box 11, until the gripping suction cup 33 at the bottom of the hoisting plate 32 adsorbs the shielding cover semi-finished product. At the same time, the top surface of the triangular inclined block 17 inside the telescopic square tube 16 abuts against the top surface inside the ratchet groove 15, so as to avoid the support box 12 from rebounding to the initial position as much as possible, so that during the bending process of the shielding cover semi-finished product, the gripping suction cup 33 always presses against the top surface of the shielding cover semi-finished product.

[0040] The hydraulic cylinder 50 drives the limiting disc 48 to move vertically upward, and the limiting disc 48 drives the supporting pulley 36 to rotate through the threaded straight rod 47. The supporting pulley 36 drives the driving straight rod 43 to rotate through the steel wire rope 51. The driving straight rod 43 drives the limiting cross bar 44 and the limiting vertical rod 45 to tilt up. The limiting cross bars 44 and the limiting vertical rods 45 at the four top corners of the limiting box 38 in the vertical direction abut against the recesses of the semi-finished shielding cover, so that the shielding cover is at the center position of the top surface of the reference block 40. At this time, the bending work can be carried out, and the bent shielding cover can be taken out from the surface of the reference block 40 by the gripping suction cup 33.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fixture for a bending machine for an isolation structure of a filter, comprising a limit box (38) and a reference block (40) fixed to the top surface of the limit box (38), characterized in that: The limiting box (38) is provided with limiting slots (41) at four vertical vertices. The limiting box (38) is provided with a correction mechanism for driving the semi-finished shielding cover to be centered through the limiting slots (41). The correction mechanism comprises a driving straight rod (43) which is horizontally rotatably mounted on the inner side wall opposite to the limiting slot (41), a limiting cross rod (44) which is fixed to the side wall close to the four driving straight rods (43), and a limiting vertical rod (45) which is vertically fixed to the end of the limiting cross rod (44) which is away from the driving straight rod (43); The part is provided with a synchronization mechanism for making the driving straight rods (43) rotate synchronously; the synchronization mechanism comprises a threaded straight rod (47) rotatably mounted inside the limiting box (38) in a vertical direction, a limiting disc (48) threadedly connected to the circumference of the threaded straight rod (47), a plurality of hydraulic cylinders (50) fixedly connected to the bottom surface of the limiting disc (48) and the bottom surface of the limiting box (38), a wire take-up pulley (52) coaxially fixed to the circumference of the threaded straight rod (47), and a steel wire strand (51) wound around the circumference of each of the driving straight rods (43), the steel wire strand The end of the wire (51) is fixed to the side of the wire take-up pulley (52); a pressing mechanism for pressing the semi-finished shielding cover against the top surface of the reference block (40) is arranged above the reference block (40); the pressing mechanism comprises a plurality of gripping suction cups (33) abutting against the top surface of the shielding cover and a hanging plate (32) fixed to the top of the plurality of gripping suction cups (33); a driving mechanism for driving the hanging plate (32) to slide is arranged on the outside of the limit box (38); a driving mechanism for making the hanging plate (32) and the limit box (38) and a rotating mechanism that can rotate the reference block (40), the rotating mechanism comprising a support box (12) installed above the hoisting plate (32), a support straight rod (29) rotatably installed at the bottom of the support box (12), a support box (11) installed below the limit box (38) and a support straight rod (35) rotatably installed at the top of the support box (11), and a control mechanism for driving the support straight rod (35) and the support straight rod (29) to rotate synchronously is provided between the support box (12) and the support box (11);The driving mechanism comprises a telescopic box body 1 (13) fixed to the bottom surface of the support box body (12), a telescopic box body 2 (14) fixed to the top surface of the support box body (11), a telescopic square tube (16) fixed to the side wall of the telescopic box body 2 (14) away from the support box body (11), and a triangular inclined block (17) penetrating the inside of the telescopic square tube (16), and a plurality of ratchet grooves (15) are vertically arranged on the side wall of the telescopic box body 1 (13) away from the support box body (12), the inner bottom surface of the ratchet groove (15) is inclined, the bottom surface of the triangular inclined block (17) is inclined, and the bottom surface of the triangular inclined block (17) is in contact with the inner bottom surface of the ratchet groove (15). ; 2. The fixture of the bending machine for the isolation structure of the filter according to claim 1 is characterized in that: The ends of the telescopic box body 1 (13) and the telescopic box body 2 (14) close to each other are both provided with openings. The control mechanism comprises a telescopic sleeve rod (22) rotating on the inner top surface of the telescopic box body 1 (13), a telescopic sleeve (25) rotating on the inner bottom surface of the telescopic box body 2 (14), a synchronous component 1 arranged between the telescopic sleeve rod (22) and the supporting straight rod (29), and a synchronous component 2 arranged between the telescopic sleeve (25) and the supporting straight rod (35). The telescopic sleeve rod (22) is inserted into the interior of the telescopic sleeve (25), and a limiting mechanism for synchronous rotation of the telescopic sleeve rod (22) and the telescopic sleeve (25) is arranged on the inner side of the telescopic sleeve (25).

3. The fixture of the bending machine for the isolation structure of the filter according to claim 2 is characterized in that: The synchronous component 1 comprises a support pulley (30) coaxially fixed to the end of the support straight rod (29) and the telescopic sleeve (22), and a support belt (31) jointly sleeved on the circumference of the two support pulleys (30); the synchronous component 2 comprises a support pulley (36) coaxially fixed to the end of the support straight rod (35) and the telescopic sleeve (25), and a support belt (37) jointly sleeved on the circumference of the two support pulleys (36).

4. The fixture of the bending machine for the isolation structure of the filter according to claim 2 is characterized in that: The telescopic sleeve rod (22) is provided with a guide groove (26) on its circumferential side along its length direction, and the limiting mechanism comprises a guide protrusion (27) fixedly mounted on the inner circumferential surface of the telescopic sleeve (25), and the guide protrusion (27) is clamped on the circumferential side of the telescopic sleeve (25) through the guide groove (26).

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