Linkage telescopic arm double-layer rotary clamping taking and placing mechanism and spark machine automatic feeding equipment

Abstract

The invention relates to a linkage telescopic arm double-layer rotary clamping taking and placing mechanism. A telescopic arm comprises a fixed arm, a first-section moving arm and a second-section moving arm which are sequentially nested from outside to inside; the telescopic driving assembly is used for driving the first section of moving arm to extend or retract relative to the fixed arm; the synchronous sliding assembly can drive the second movable arm to stretch out when the telescopic driving assembly drives the first movable arm to stretch out relative to the fixed arm and drive the second movable arm to retract when the telescopic driving assembly drives the first movable arm to retract relative to the fixed arm. The clamping assembly comprises an electrode clamping part and a workpiece magnetic table clamping part, the electrode clamping part is used for clamping an electrode, and the workpiece magnetic table clamping part is used for clamping a workpiece magnetic table. According to the linkage telescopic arm double-layer rotary clamping taking and placing mechanism, automatic feeding of electrodes and workpiece magnetic tables of a spark machine can be achieved in a limited space, and the labor cost is greatly reduced; and the structure is simple, the manufacturing cost is low, the performance is stable, and clamping and positioning are reliable and accurate.

Description

Technical Field

[0001] The invention relates to the technical field of cutting equipment, and in particular to a linkage telescopic arm double-layer rotary clamping and placing mechanism and automatic feeding equipment for a spark machine. Background Art

[0002] The basic working principle of electrical discharge machining (EDM) is to use a continuously moving thin metal wire (called electrode wire) as an electrode to perform pulsed spark discharge to erode metal and cut the workpiece into shape. The electrodes on existing spark machines are generally loaded manually one by one, and the workpieces are also clamped manually when the machine is stopped. The entire process cycle to the processing of the next workpiece requires manual operation, which greatly affects the processing efficiency. Summary of the invention

[0003] In response to the above technical problems, the present invention provides a linked telescopic arm double-layer rotating clamping and placing mechanism and an automatic feeding device for a spark machine, which can realize automatic feeding of the electrodes and workpiece magnetic table of the spark machine in a limited space, greatly reducing labor costs; and has a simple structure, low manufacturing cost, stable performance, and reliable and accurate clamping and positioning.

[0004] In order to solve the above technical problems, the present invention provides a linked telescopic arm double-layer rotating clamping and placing mechanism, comprising a telescopic arm, a telescopic drive assembly, a synchronous sliding assembly and a clamping assembly; the telescopic arm comprises a fixed arm, a first-section movable arm and a second-section movable arm which are nested in sequence from the outside to the inside; the telescopic drive assembly is used to drive the first-section movable arm to extend or retract relative to the fixed arm; the synchronous sliding assembly can drive the second-section movable arm to extend when the telescopic drive assembly drives the first-section movable arm to extend relative to the fixed arm, and drive the second-section movable arm to retract when the telescopic drive assembly drives the first-section movable arm to retract relative to the fixed arm; the clamping assembly is arranged at the protruding end of the second-section movable arm, and the clamping assembly comprises an electrode clamping part and a workpiece magnetic table clamping part, the electrode clamping part is used to clamp the electrode, and the workpiece magnetic table clamping part is used to clamp the workpiece magnetic table.

[0005] Furthermore, the electrode clamping portion includes a first clamping jaw, a second clamping jaw and a rotating driving member, the first clamping jaw and the second clamping jaw are arranged on the rotating driving member, and the rotating driving member can drive the first clamping jaw and the second clamping jaw to rotate back and forth at a preset angle.

[0006] Furthermore, the electrode clamping portion is located on the upper side of the second movable arm, and the workpiece magnetic table clamping portion is located on the lower side of the second movable arm.

[0007] Furthermore, the telescopic driving assembly includes a driving motor arranged on the fixed arm and a rack arranged on the first movable arm, and a gear meshing with the rack is provided on the output shaft of the driving motor.

[0008] The cam module is connected with the control wheel module, and the control wheel module is connected with the control wheel module, and the control wheel module is connected with the control wheel module.

[0009] Furthermore, the amount of movement of the second movable arm relative to the first movable arm is the same as the amount of movement of the first movable arm relative to the fixed arm.

[0010] Furthermore, the fixed arm is provided with a first slider, and the first movable arm is provided with a first linear rail matched with the first slider; the first movable arm is provided with a second slider, and the second movable arm is provided with a second linear rail matched with the second slider.

[0011] The present invention also relates to an automatic feeding device for a spark machine, which is used for automatically feeding the spark machine and comprises the above-mentioned linked telescopic arm double-layer rotary clamping and placing mechanism.

[0012] Furthermore, it also includes a loading cache mechanism, which includes an electrode cache platform and a workpiece magnetic table cache platform; a plurality of the electrodes are stored on the electrode cache platform, and a plurality of the workpiece magnetic tables are stored on the workpiece magnetic table cache platform; the linked telescopic arm double-layer rotary clamping and placing mechanism clamps the electrode on the electrode cache platform and the workpiece magnetic table on the workpiece magnetic table cache platform when in a retracted state, and the linked telescopic arm double-layer rotary clamping and placing mechanism sends the clamped electrode and the workpiece magnetic table to the loading place of the spark machine when in an extended state.

[0013] Furthermore, the linked telescopic arm double-layer rotary clamping and placing mechanism can also retrieve the used electrode to the loading buffer mechanism when delivering the unused electrode to the spark machine.

[0014] Furthermore, the plurality of electrodes are evenly distributed in a circular circumferential direction on the electrode cache platform, and the plurality of workpiece magnetic tables are evenly distributed in a circular circumferential direction on the workpiece magnetic table cache platform; the loading cache mechanism also includes a turntable power assembly, and the linked telescopic arm double-layer rotary clamping and placing mechanism is arranged on the turntable power assembly and is located between the electrode cache platform and the workpiece magnetic table cache platform, and the turntable power assembly is used to drive the linked telescopic arm double-layer rotary clamping and placing mechanism to move up and down and rotate to clamp the electrode and the workpiece magnetic table.

[0015] The linkage telescopic arm double-layer rotating clamping and placing mechanism of the present invention is provided by setting a telescopic arm, a telescopic drive component, a synchronous sliding component and a clamping component; wherein the telescopic arm includes a fixed arm, a first section movable arm and a second section movable arm which are nested in sequence from the outside to the inside; the telescopic drive component is used to drive the first section movable arm to extend or retract relative to the fixed arm; the synchronous sliding component can drive the second section movable arm to extend when the telescopic drive component drives the first section movable arm to extend relative to the fixed arm, and drive the second section movable arm to retract when the telescopic drive component drives the first section movable arm to retract relative to the fixed arm; the clamping component is arranged at the extended end of the second section movable arm, and the clamping component includes an electrode clamping part and a workpiece magnetic table clamping part, the electrode clamping part is used to clamp the electrode, and the workpiece magnetic table clamping part is used to clamp the workpiece magnetic table. When the telescopic arm is fully retracted, the required electrode and workpiece magnetic table can be removed from the loading buffer mechanism of the automatic loading equipment of the spark machine, and after clamping, the telescopic arm is fully extended to deliver the electrode and the workpiece magnetic table to the loading place of the spark machine. The linkage telescopic arm double-layer rotating clamping and placing mechanism of the present invention can realize automatic loading of the electrode and workpiece magnetic table of the spark machine in a limited space, greatly reducing the labor cost; and has a simple structure, low manufacturing cost, stable performance, and reliable and accurate clamping and positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a linked telescopic arm double-layer rotary clamping and placing mechanism in an extended state, shown in a preferred embodiment of the present invention.

[0017] Figure 2 It is a schematic diagram of a linked telescopic arm double-layer rotary clamping and placing mechanism in a retracted state, shown in a preferred embodiment of the present invention.

[0018] Figure 3 It is a schematic diagram of the fixed arm of the linked telescopic arm double-layer rotary clamping and placing mechanism shown in the preferred embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the first movable arm of the linked telescopic arm double-layer rotary clamping and placing mechanism shown in a preferred embodiment of the present invention.

[0020] Figure 5It is a schematic diagram of the first section of the movable arm and the clamping assembly of the linked telescopic arm double-layer rotary clamping and placing mechanism shown in the preferred embodiment of the present invention.

[0021] Figure 6 It is a schematic diagram of a synchronous sliding assembly of a linked telescopic arm double-layer rotary clamping and placing mechanism shown in a preferred embodiment of the present invention.

[0022] Figure 7 It is a schematic diagram of a preferred embodiment of the present invention showing a feeding buffer mechanism of an automatic feeding device for a spark machine clamping a workpiece magnetic table.

[0023] Figure 8 It is a schematic diagram of the feeding buffer mechanism of the automatic feeding equipment of the spark machine shown in the preferred embodiment of the present invention when clamping the electrode. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the present invention, "each" includes one and more than two quantities.

[0026] Figure 1 is a schematic diagram of a linked telescopic arm double-layer rotary clamping and placing mechanism in an extended state, showing a preferred embodiment of the present invention. Figure 2 This is a schematic diagram of the linked telescopic arm double-layer rotary clamping and placing mechanism in the retracted state shown in the preferred embodiment of the present invention. Please refer to Figure 1 and Figure 2The linked telescopic arm double-layer rotating clamping and placing mechanism of the preferred embodiment of the present invention comprises a telescopic arm 10, a telescopic drive assembly 20, a synchronous sliding assembly 30 and a clamping assembly 40; the telescopic arm 10 comprises a fixed arm 110, a first section movable arm 120 and a second section movable arm 130 which are nested in sequence from the outside to the inside; the telescopic drive assembly 20 is used to drive the first section movable arm 120 to extend or retract relative to the fixed arm 110; the synchronous sliding assembly 30 can drive the second section movable arm 130 to extend when the telescopic drive assembly 20 drives the first section movable arm 120 to extend relative to the fixed arm 110, and drive the second section movable arm 130 to retract when the telescopic drive assembly 20 drives the first section movable arm 120 to retract relative to the fixed arm 110; the clamping assembly 40 is arranged at the protruding end of the second section movable arm 130, and the clamping assembly 40 comprises an electrode clamping part 410 and a workpiece magnetic table clamping part 420, the electrode clamping part 410 is used to clamp the electrode 50, and the workpiece magnetic table clamping part 420 is used to clamp the workpiece magnetic table 60.

[0027] Specifically, the telescopic arm 10 fixes the entire linked telescopic arm double-layer rotary clamping and placing mechanism on other structures through the fixed arm 110, and the first section movable arm 120 can be extended or retracted relative to the fixed arm 110. When the first section movable arm 120 is extended or retracted, the second section movable arm 130 will be synchronously extended or retracted relative to the first section movable arm 120. The extended end of the second section movable arm 130 refers to the end of the second section movable arm 130 that is away from the second section movable arm 130 or the fixed arm 110 after the second section movable arm 130 is extended.

[0028] Figure 3 Schematic diagram of the fixed arm of the double-layer rotating clamping and placing mechanism of the linked telescopic arm shown in the preferred embodiment of the present invention. Figure 4 Schematic diagram of the first movable arm of the double-layer rotating clamping and placing mechanism of the linked telescopic arm shown in the preferred embodiment of the present invention. Figure 5 Schematic diagram of the first movable arm and the clamping assembly of the linked telescopic arm double-layer rotating clamping and placing mechanism according to a preferred embodiment of the present invention. Figure 6 Schematic diagram of the synchronous sliding assembly of the double-layer rotating clamping and placing mechanism of the linked telescopic arm of the present invention, please refer to Figures 3 to 6 The telescopic drive assembly 20 includes a drive motor 210 disposed on the fixed arm 110 and a rack 220 disposed on the first movable arm 120. The output shaft of the drive motor 210 is provided with a gear (not shown) meshing with the rack 220. In other embodiments, the telescopic drive assembly 20 may also be other structures such as a telescopic cylinder.

[0029] The synchronous sliding assembly 30 includes an extending rope wheel module 310 and a retracting rope wheel module 320. The extending rope wheel module 310 includes an extending rope 311 and an extending rope winding wheel 312; the extending rope winding wheel 312 is fixed to one end of the first section moving arm 120 close to the clamping assembly 40, the extending rope 311 is wound around the extending rope winding wheel 312, one end of the extending rope 311 extending from the lower side of the extending rope winding wheel 312 is fixed to one end of the second section moving arm 130 away from the clamping assembly 40, and one end of the extending rope 311 extending from the upper side of the extending rope winding wheel 312 is fixed to one end of the fixed arm 110 away from the clamping assembly 40. When the first section moving arm 120 extends outward, the extending rope 311 pulls the second section moving arm 130 to extend outward synchronously.

[0030] The retracting rope wheel module 320 includes a retracting rope 321 and a retracting rope wheel 322. The retracting rope wheel 322 is fixed to one end of the first section moving arm 120 away from the clamping assembly 40. The retracting rope 321 is wound around the retracting rope wheel 322. One end of the retracting rope 321 extending from the lower side of the retracting rope wheel 322 is fixed to the second section moving arm 130. One end of the retracting rope 321 extending from the upper side of the retracting rope wheel 322 is fixed to one end of the fixed arm 110 close to the clamping assembly 40. When the first section moving arm 120 is retracted inward, the extending rope 311 pulls the second section moving arm 130 to retract inward synchronously. The second movable arm 130 is extended or retracted relative to the first movable arm 120 by cooperating with the extending rope pulley module 310 and the retracting rope pulley module 320. The synchronous telescopic error is within 0.5 mm, and the telescopic accuracy is high, which can meet the loading and unloading requirements of the electrode 50 of the spark machine and the workpiece magnetic table 60.

[0031] Furthermore, the movement amount of the second movable arm 130 relative to the first movable arm 120 is the same as the movement amount of the first movable arm 120 relative to the fixed arm 110 .

[0032] In this embodiment, the fixed arm 110 is provided with a first slider 111, and the first movable arm 120 is provided with a first linear rail 121 matched with the first slider 111. The first movable arm 120 is provided with a second slider 122, and the second movable arm 130 is provided with a second linear rail 131 matched with the second slider 122. Through the cooperation between the linear rail and the slider, the telescopic process of the first movable arm 120 and the second movable arm 130 is smoother.

[0033] In this embodiment, the electrode clamping portion 410 includes a first clamping jaw 411, a second clamping jaw 412 and a rotating driving member 413. The first clamping jaw 411 and the second clamping jaw 412 are arranged on the rotating driving member 413. The rotating driving member 413 can drive the first clamping jaw 411 and the second clamping jaw 412 to rotate back and forth at a preset angle.

[0034] Specifically, the first jaw 411 and the second jaw 412 are both provided with a jaw cylinder for controlling the opening and closing of the chuck to clamp the electrode 50. The rotating drive member 413 is a rotating cylinder, which can control the rotation of the first jaw 411 and the second jaw 412 so that the first jaw 411 or the second jaw 412 is located at the corresponding clamping position.

[0035] A parallel clamping cylinder is provided on the workpiece magnetic table clamping part 420 for controlling the opening and closing of the clamping head to clamp the working magnetic table 60 .

[0036] Furthermore, the electrode clamping portion 410 is located on the upper side of the second movable arm 130 , and the workpiece magnetic table clamping portion 420 is located on the lower side of the second movable arm 130 , but this is not limited thereto and can also be adjusted accordingly according to the feeding requirements of the spark machine.

[0037] The invention also relates to an automatic feeding device for a spark machine, which is used for automatically feeding the spark machine. Figure 7 It is a schematic diagram of the preferred embodiment of the present invention showing the feeding buffer mechanism of the automatic feeding equipment of the spark machine when clamping the workpiece magnetic table, Figure 8 This is a schematic diagram of the feeding buffer mechanism of the spark machine automatic feeding device clamping the electrode in the preferred embodiment of the present invention, please refer to Figure 7 and Figure 8 The automatic feeding equipment of the spark machine includes the above-mentioned linkage telescopic arm double-layer rotating clamping and placing mechanism.

[0038] Furthermore, the automatic feeding device of the spark machine also includes a feeding cache mechanism 70, which includes an electrode cache platform 710 and a workpiece magnetic table cache platform 720; a plurality of electrodes 50 are stored on the electrode cache platform 720, and a plurality of workpiece magnetic tables 60 are stored on the workpiece magnetic table cache platform 720.

[0039] The linked telescopic arm double-layer rotary clamping and placing mechanism clamps the electrode 50 on the electrode buffer platform 710 and the workpiece magnetic table 60 on the workpiece magnetic table buffer platform 720 when in the retracted state, and delivers the clamped electrode 50 and workpiece magnetic table 60 to the loading position of the spark machine when in the extended state.

[0040] Furthermore, the linked telescopic arm double-layer rotary clamping and placing mechanism can also retrieve the used electrode 50 back to the loading buffer mechanism 70 when delivering the unused electrode 50 to the spark machine.

[0041] In this embodiment, the electrode 50 includes an electrode chuck and an electrode block clamped in the electrode chuck, and the electrode chuck is provided with two clamping grooves, one of which is used for clamping the electrode clamping part 410 of the double-layer rotating clamping and placing mechanism of the linkage telescopic arm, and the other cooperates with the automatic feeding device of the spark machine or the placement point of the spark machine to place the electrode 50. The workpiece magnetic table 60 includes a magnetic table and a workpiece arranged on the magnetic table.

[0042] The electrode buffer platform 710 and the workpiece magnetic stage buffer platform 720 are roughly annular in shape. A plurality of electrodes 50 are arranged in a circular manner and suspended in the circumference of the electrode buffer platform 710. A plurality of workpiece magnetic stages 60 are arranged in a circular manner and are arranged in the circumference of the workpiece magnetic stage buffer platform 720.

[0043] The loading cache mechanism 70 also includes a turntable power assembly 730. The linkage telescopic arm double-layer rotary clamping and placing mechanism is arranged on the turntable power assembly 730 and is located between the electrode cache platform 710 and the workpiece magnetic table cache platform 720. The turntable power assembly 730 is used to drive the linkage telescopic arm double-layer rotary clamping and placing mechanism to move up and down and rotate to clamp the electrode 50 and the workpiece magnetic table 60. When the turntable power assembly 730 drives the linkage telescopic arm double-layer rotary clamping and placing mechanism to move and rotate to the position where the electrode clamping part 410 can clamp the electrode 50 on the electrode cache platform 710, the clamping claw cylinder can be started to clamp the electrode 50; when the turntable power assembly 730 drives the linkage telescopic arm double-layer rotary clamping and placing mechanism to move down and rotate to the position where the workpiece magnetic table clamping part 420 can clamp the workpiece magnetic table 60 on the workpiece magnetic table cache platform 720, the parallel clamping cylinder can be started to clamp the workpiece magnetic table 60. After the linked telescopic arm double-layer rotary clamping and placing mechanism has clamped the electrode 50 and the workpiece magnetic table 60, the turntable power assembly 730 drives the linked telescopic arm double-layer rotary clamping and placing mechanism to rotate and move to the telescopic position again, and the linked telescopic arm double-layer rotary clamping and placing mechanism is fully extended, so that the electrode 50 and the workpiece magnetic table 60 can be transferred to the loading position of the spark machine.

[0044] The loading cache mechanism 70 also includes a mounting bracket 740, and a shell (not shown) is provided outside the mounting bracket 740. The electrode cache platform 710, the workpiece magnetic table cache platform 720, the turntable power assembly 730 and the mounting bracket 740 are all located in the shell. A window is also provided on the shell for the linked telescopic arm double-layer rotating clamping and placing mechanism to extend.

[0045] The invention provides a linkage telescopic arm double-layer rotating clamping and placing mechanism and an automatic feeding device for a spark machine, by setting a telescopic arm, a telescopic drive assembly, a synchronous sliding assembly and a clamping assembly; wherein the telescopic arm comprises a fixed arm, a first movable arm and a second movable arm which are nested in sequence from outside to inside; the telescopic drive assembly is used to drive the first movable arm to extend or retract relative to the fixed arm; the synchronous sliding assembly can drive the second movable arm to extend when the telescopic drive assembly drives the first movable arm to extend relative to the fixed arm, and drive the second movable arm to retract when the telescopic drive assembly drives the first movable arm to retract relative to the fixed arm; the clamping assembly is arranged at the extended end of the second movable arm, and the clamping assembly comprises an electrode clamping part and a workpiece magnetic table clamping part, the electrode clamping part is used to clamp the electrode, and the workpiece magnetic table clamping part is used to clamp the workpiece magnetic table. When the telescopic arm is fully retracted, the required electrode and workpiece magnetic table can be removed from the feeding cache mechanism of the automatic feeding device for the spark machine, and after clamping, the telescopic arm is fully extended to deliver the electrode and the workpiece magnetic table to the feeding place of the spark machine. The linkage telescopic arm double-layer rotating clamping and placing mechanism of the present invention can realize automatic loading of the electrode and workpiece magnetic table of the spark machine in a limited space, greatly reducing the labor cost; and has a simple structure, low manufacturing cost, stable performance, and reliable and accurate clamping and positioning.

[0046] The above-mentioned embodiments only express the preferred implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A linkage telescopic arm double-layer rotating clamping and placing mechanism, characterized in that: It comprises a telescopic arm (10), a telescopic drive assembly (20), a synchronous sliding assembly (30) and a gripping assembly (40); The telescopic arm (10) comprises a fixed arm (110), a first section movable arm (120) and a second section movable arm (130) which are nested in sequence from the outside to the inside; The telescopic driving assembly (20) is used to drive the first movable arm (120) to extend or retract relative to the fixed arm (110); The synchronous sliding assembly (30) can drive the second section of the movable arm (130) to extend when the telescopic driving assembly (20) drives the first section of the movable arm (120) to extend relative to the fixed arm (110), and can drive the second section of the movable arm (130) to retract when the telescopic driving assembly (20) drives the first section of the movable arm (120) to retract relative to the fixed arm (110); The clamping assembly (40) is arranged at the extended end of the second movable arm (130), and the clamping assembly (40) comprises an electrode clamping portion (410) and a workpiece magnetic table clamping portion (420), the electrode clamping portion (410) being used to clamp the electrode (50), and the workpiece magnetic table clamping portion (420) being used to clamp the workpiece magnetic table (60).

2. The linkage telescopic arm double-layer rotating clamping and placing mechanism according to claim 1 is characterized in that: The electrode clamping portion (410) comprises a first clamping jaw (411), a second clamping jaw (412) and a rotating driving member (413); the first clamping jaw (411) and the second clamping jaw (412) are arranged on the rotating driving member (413); and the rotating driving member (413) can drive the first clamping jaw (411) and the second clamping jaw (412) to rotate back and forth at a preset angle.

3. The linkage telescopic arm double-layer rotating clamping and placing mechanism according to claim 2 is characterized in that: The electrode clamping portion (410) is located on the upper side of the second movable arm (130), and the workpiece magnetic table clamping portion (420) is located on the lower side of the second movable arm (130).

4. The linkage telescopic arm double-layer rotating clamping and placing mechanism according to claim 1 is characterized in that: The telescopic drive assembly (20) comprises a drive motor (210) arranged on the fixed arm (110) and a rack (220) arranged on the first movable arm (120); a gear meshing with the rack (220) is provided on the output shaft of the drive motor (210).

5. The linkage telescopic arm double-layer rotating clamping and placing mechanism according to claim 4 is characterized in that: The synchronous sliding assembly (30) comprises an extending rope wheel module (310) and a retracting rope wheel module (320); the extending rope wheel module (310) comprises an extending rope (311) and an extending rope winding wheel (312); the extending rope winding wheel (312) is fixed to one end of the first movable arm (120) close to the clamping assembly (40); the extending rope (311) is wound around the extending rope winding wheel (312); one end of the extending rope (311) extending from the lower side of the extending rope winding wheel (312) is fixed to one end of the second movable arm (130) away from the clamping assembly (40); and one end of the extending rope (311) extending from the upper side of the extending rope winding wheel (312) is fixed to the The fixed arm (110) is located at one end away from the clamping assembly (40); the retracting rope wheel module (320) comprises a retracting rope (321) and a retracting rope wheel (322), the retracting rope wheel (322) is fixed to one end of the first movable arm (120) away from the clamping assembly (40), the retracting rope (321) is wound around the retracting rope wheel (322), one end of the retracting rope (321) extending from the lower side of the retracting rope wheel (322) is fixed to the second movable arm (130), and one end of the retracting rope (321) extending from the upper side of the retracting rope wheel (322) is fixed to one end of the fixed arm (110) close to the clamping assembly (40).

6. The linkage telescopic arm double-layer rotary clamping and placing mechanism according to claim 5 is characterized in that: The amount of movement of the second movable arm (130) relative to the first movable arm (120) is the same as the amount of movement of the first movable arm (120) relative to the fixed arm (110).

7. The linkage telescopic arm double-layer rotary clamping and placing mechanism according to claim 5 is characterized in that: The fixed arm (110) is provided with a first slider (111), and the first movable arm (120) is provided with a first linear rail (121) that matches the first slider (111); the first movable arm (120) is provided with a second slider (122), and the second movable arm (130) is provided with a second linear rail (131) that matches the second slider (122).

8. An automatic feeding device for a spark machine, used for automatically feeding a spark machine, characterized in that: It comprises a linked telescopic arm double-layer rotating clamping and placing mechanism as described in any one of claims 1 to 7.

9. The automatic feeding equipment for spark machine according to claim 8, characterized in that: The invention also comprises a loading cache mechanism (70), wherein the loading cache mechanism (70) comprises an electrode cache platform (710) and a workpiece magnetic table cache platform (720); a plurality of the electrodes (50) are stored on the electrode cache platform (710), and a plurality of the workpiece magnetic tables (60) are stored on the workpiece magnetic table cache platform (720); the linked telescopic arm double-layer rotary clamping and placing mechanism clamps the electrodes (50) on the electrode cache platform (710) and the workpiece magnetic table (60) on the workpiece magnetic table cache platform (720) when in a retracted state, and delivers the clamped electrodes (50) and the workpiece magnetic table (60) to the loading position of the spark machine when in an extended state.

10. The automatic feeding equipment for spark machine according to claim 9, characterized in that: The linked telescopic arm double-layer rotary clamping and placing mechanism can also retrieve the used electrode (50) back to the loading buffer mechanism (70) when delivering the unused electrode (50) to the spark machine.

11. The automatic feeding device for spark machine according to claim 9, characterized in that: The plurality of electrodes (50) are evenly distributed in a circular circumferential direction on the electrode cache platform (710), and the plurality of workpiece magnetic tables (60) are evenly distributed in a circular circumferential direction on the workpiece magnetic table cache platform (720); the loading cache mechanism (70) further comprises a turntable power assembly (730), the linked telescopic arm double-layer rotary clamping and placing mechanism is arranged on the turntable power assembly (730) and is located between the electrode cache platform (710) and the workpiece magnetic table cache platform (720), and the turntable power assembly (730) is used to drive the linked telescopic arm double-layer rotary clamping and placing mechanism to move up and down and rotate to clamp the electrode (50) and the workpiece magnetic table (60).

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