Rack positioning mechanism and method for automatic production line

Abstract

The invention discloses a material rack positioning mechanism and method for an automatic production line, relates to the technical field of production lines, and solves the problems that positioning and clamping operation is complex, and when a heavy wire coil is lifted for a long time through two rubber clamping heads for many times, the positioning and clamping operation is complex. And the rubber clamping head possibly deforms due to the weight of the rubber clamping head, so that the rubber clamping head shakes during rotation. A material rack positioning mechanism for an automatic production line comprises a wire coil pay-off machine, and a supporting type wire coil placing table is installed on the lower side of the interior of the wire coil pay-off machine. By means of the wire coil positioning and clamping device, positioning and clamping operation on the wire coil can be automatically completed, when the wire coil is located in a half-empty space, the conveying belt with the arc-shaped upper end face can be attached to the bottom end of the wire coil so as to support the wire coil, and by means of the technical scheme, the equipment convenience is improved, and meanwhile the production efficiency is improved. The force borne by the rubber clamping head used for lifting the wire coil can be reduced, and therefore the service life of the rubber clamping head is prolonged.

Description

Technical Field

[0001] The invention relates to the field of production lines, and in particular to a material rack positioning mechanism and method for an automatic production line. Background Art

[0002] Production line refers to the route that the product production process goes through, starting from the raw materials entering the production site, through a series of production activities such as processing, transportation, assembly, and inspection. Production lines can be divided into fully automatic production lines and semi-automatic production lines, as well as large, medium and small production lines according to the degree of automation, production scale and production attributes. In modern industry, production lines are widely used in automobile manufacturing, electronic product manufacturing, food processing and pharmaceutical manufacturing, etc., realizing a high degree of automation and precision in the production process, and are also subdivided into cable production lines, mobile phone production lines, cosmetics production lines, etc. according to the different products produced; Before starting the cable production line, it is necessary to first clamp and position the wire reel on the corresponding wire-paying device, such as a wire reel pay-off machine or a wire-paying rack, and then guide the wire head on the clamped and positioned wire reel to the cable production line. This device for clamping and positioning a wire reel with cable raw materials wrapped around its outer surface can be called a material rack positioning mechanism for an automatic production line.

[0003] However, when using the wire drum pay-off machine, it is necessary to manually align the two wire drum clamping grooves on the wire drum with the two rubber clamping heads respectively, and then move the rubber clamping heads by manually rotating the threaded structure to fix the wire drum. This fixing operation is relatively cumbersome, and when the wire drum is fixed, in order to ensure that it can rotate, it is necessary to lift the fixed wire drum into the air and support it only by the two rubber clamping heads. When the heavy wire drum is lifted for a long time many times, the rubber clamping heads may be deformed due to their weight, causing them to shake when rotating, ultimately affecting the stability of the clamped and positioned wire drum during rotation, so that they have to be replaced, affecting their service life; therefore, it does not meet the existing needs, and we propose a material rack positioning mechanism and method for an automatic production line. Summary of the invention

[0004] The object of the present invention is to provide a material rack positioning mechanism and method for an automatic production line, so as to solve the problem proposed in the above background technology that when using a wire drum pay-off machine, it is necessary to manually align the two wire drum clamping grooves on the wire drum with the two rubber clamping heads respectively, and then move the rubber clamping heads by manually rotating the threaded structure to fix the wire drum. This fixing operation is relatively cumbersome, and when the wire drum is fixed, in order to ensure that it can rotate, it is necessary to lift the fixed wire drum into the air and support it only by the two rubber clamping heads. When the heavy wire drum is lifted for a long time many times, the rubber clamping heads may be deformed due to their weight, causing them to shake when rotating, and finally affecting the stability of the clamped and positioned wire drum during rotation, so that it has to be replaced, affecting its service life, and the like.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a material rack positioning mechanism for an automatic production line, comprising a wire drum pay-off machine, a supporting wire drum placement table is installed on the lower side of the wire drum pay-off machine, the supporting wire drum placement table comprises a square table, a square groove is provided in the middle of the upper end surface of the square table, a conveyor belt is provided inside the square groove, a first metal supporting conveyor roller is provided at both ends of the lower side of the conveyor belt, a plurality of second supporting metal conveyor rollers arranged in an arc shape are provided on the upper side of the conveyor belt, and the shape of the upper end surface of the conveyor belt is an arc shape; Both sides of the outer surfaces of the first metal support conveying roller and the second metal support conveying roller are provided with an annular sliding groove; A slide bar is fixedly provided on both sides of the inner wall of the conveyor belt, and the two slide bars are respectively slidably installed inside the annular chute located on both sides of the outer surface of the first metal support conveyor roller and the second support metal conveyor roller, and a soft magnetic strip that fits the inner wall of the annular chute is fixedly provided on the surface of the slide bar facing the inner wall of the annular chute; A wire reel is placed on the upper end surface of the support type wire reel placement platform, and an automatic wire reel positioning and clamping mechanism is provided on the outer side of the wire reel, and the automatic wire reel positioning and clamping mechanism comprises two horizontal bar cylinders, two rubber clamping heads, two circular internal thread grooves, two sensor cameras and a synchronous moving mechanism, and the piston rods of the two horizontal bar cylinders are respectively fixedly connected to the two sides of the lower end surface of the support type wire reel placement platform; The two circular internal thread grooves are respectively located on the opposite surfaces of the two rubber clamping heads, the two sensor cameras are respectively fixedly installed inside the two circular internal thread grooves, and the synchronous movement mechanism can drive the two rubber clamping heads to move inward or outward synchronously.

[0006] Preferably, the synchronous movement mechanism includes a stepper motor, the output shaft of the stepper motor is connected to a transmission shaft via a coupling, a shaft is provided on both sides of the transmission shaft, and the two shafts are respectively connected in series with the transmission shaft via a synchronous chain.

[0007] Preferably, a first bevel gear is provided on a lower fixed sleeve of the outer surface of the rotating shaft, and the first bevel gear is meshed with a second bevel gear.

[0008] Preferably, the axis of the second bevel gear is connected to a threaded rod, one side of the outer surface of the threaded rod is sleeved with an internal thread sleeve matching its external thread, and the lower end surface of the internal thread sleeve is fixedly connected to a moving column.

[0009] Preferably, the lower end surface of the movable column is slidably connected to the interior of the wire drum pay-off machine, and the two rubber clamping heads are respectively installed on the opposite surfaces of the two movable columns through roller bearings.

[0010] Preferably, a transparent cover is provided on the outer side of the sensor camera, the bottom end of the transparent cover is located inside the circular internal thread groove, and the transparent cover located inside the circular internal thread groove is connected to the circular internal thread groove through a thread structure.

[0011] Preferably, a control panel is fixedly mounted on one side of the upper end surface of the wire drum pay-off machine, and the wire drum pay-off machine and the wire drum automatic positioning and clamping mechanism are electrically connected to the wire drum pay-off machine.

[0012] Preferably, a wire drum clamping groove is provided on both sides of the outer surface of the wire drum, and the positions of the two wire drum clamping grooves correspond to the positions of the two rubber clamping heads respectively.

[0013] A method for using a material rack positioning mechanism for an automatic production line: the method for using comprises the following steps; Step A: first place the wire reel on the upper end surface of the supporting wire reel placement table, then push the supporting wire reel placement table and the wire reel placed on the upper end surface of the supporting wire reel placement table upwards through two horizontal cylinders, and monitor the position of the wire reel clamping groove on the outer surface of the wire reel through a sensor camera installed in the circular internal thread groove on the outer surface of the rubber clamping head. When the positions of the two wire reel clamping grooves are aligned with the two rubber clamping heads respectively, the horizontal cylinder will stop working; Step B: When the two wire drum clamping grooves on the wire drum are aligned with the two rubber clamping heads respectively, the stepper motor will automatically start, and the stepper motor can drive the transmission shaft connected thereto and the shaft connected in series with the transmission shaft through a synchronous chain to rotate together, and the rotating shaft can drive the first bevel gear fixedly sleeved on the lower side of the outer surface of the shaft and the second bevel gear meshing therewith to rotate together, and the rotating second bevel gear can drive the threaded rod connected to the axis of the second bevel gear to rotate, and because the internal threaded sleeve sleeved on the outer surface of the threaded rod is fixed to the moving column, the internal threaded sleeve cannot rotate with the rotation of the threaded rod, and when the threaded rod rotates, the internal threaded sleeve that is threadedly connected thereto but cannot rotate by itself will move back and forth on the outer surface of the threaded rod, and at this time, the two internal threaded sleeves are synchronously moved inward, and during the movement of the internal threaded sleeve, the moving column fixed thereto and the rubber clamping head installed on the moving column will move inward together, and the two rubber clamping heads moving inward will respectively contact the two wire drum clamping grooves on the outer surface of the wire drum, so as to clamp and position the wire drum; Step C: A slide bar is fixed on the inner wall of the conveyor belt, which is slidably connected to the inner side of the annular slide groove on the outer surface of the first metal support conveyor roller and the second metal support conveyor roller, and the conveyor belt can be fixed to the first metal support conveyor roller and the second metal support conveyor roller by means of a soft magnetic strip fixed on the slide bar. The upper end surface of the second metal support conveyor roller is arc-shaped by the support of a plurality of arc-shaped metal conveyor rollers, so that the upper end surface of the second support metal conveyor roller is arc-shaped, and the arc-shaped surface can fit the bottom end of the wire drum as much as possible. When the wire drum rotates, the conveyor belt that fits the bottom end thereof will rotate therewith.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention can automatically align two wire drum clamping grooves on the outer surface of the wire drum with two rubber clamping heads through a single-bar cylinder, and then the two rubber clamping heads can be synchronously moved toward the two wire drum clamping grooves through a synchronous moving mechanism, so as to perform positioning and clamping operations on the wire drum clamping grooves. The above technical solution can automatically position and clamp the wire drum, thereby improving the automation of the equipment; The present invention fixes a slide bar on the inner wall of the conveyor belt, which is slidably connected to the inside of an annular slide groove on the outer surface of the first metal support conveyor roller and the second metal support conveyor roller, and fixes the conveyor belt to the first metal support conveyor roller and the second metal support conveyor roller through a soft magnetic strip fixed on the slide bar. The upper end surface of the second metal support conveyor roller is arc-shaped through the support of a plurality of metal conveyor rollers arranged in an arc shape, and the arc-shaped surface can fit the bottom end of the wire drum as much as possible. When the wire drum rotates, the conveyor belt that fits the bottom end thereof will rotate therewith. The wire drum can be supported by the conveyor belt, thereby reducing the external pressure on the two rubber clamping heads. The service life of the rubber clamping heads is improved through the above technical scheme. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view of the internal structure of the present invention; Figure 3 For the present invention Figure 2 A side view of the structure where the second supporting metal conveyor roller is connected to the conveyor belt at B in the middle; Figure 4 This is a front view of the internal structure of the present invention; Figure 5 For the present invention Figure 4 A magnified view of the structure at C in the middle; Figure 6 For the present invention Figure 4 A magnified view of the structure at center.

[0016] In the figure: 1. Wire drum pay-off machine; 2. Support wire drum placement table; 201. Square table; 202. Square groove; 203. Conveyor belt; 204. First metal support conveyor roller; 205. T-shaped slide bar; 206. Cross-sectional T-shaped ring groove; 207. Second support metal conveyor roller; 208. Soft magnetic strip; 3. Wire drum; 4. Single-bar cylinder; 5. Stepper motor; 6. Transmission shaft; 7. Shaft; 8. Synchronous chain; 9. First umbrella gear; 10. Second umbrella gear; 11. Threaded rod; 12. Internal thread sleeve; 13. Moving column; 14. Rubber clamping head; 15. Circular internal thread groove; 16. Sensor camera; 17. Transparent cover; 18. Control panel; 19. Wire drum clamping groove. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] See also Figures 1 to 6, an embodiment of the present invention: a material rack positioning mechanism for an automatic production line, comprising a wire drum pay-off machine 1, a supporting wire drum placement table 2 is installed on the lower side of the wire drum pay-off machine 1, the supporting wire drum placement table 2 comprises a square table 201, a square groove 202 is provided in the middle of the upper end surface of the square table 201, a conveyor belt 203 is provided inside the square groove 202, a first metal support conveyor roller 204 is provided at both ends of the lower side of the conveyor belt 203, a plurality of second support metal conveyor rollers 207 arranged in an arc shape are provided on the upper side of the conveyor belt 203, and the shape of the upper end surface of the conveyor belt 203 is an arc shape; Both sides of the outer surface of the first metal support conveying roller 204 and the second metal support conveying roller 207 are provided with an annular slide groove 206; A slide bar 205 is fixedly provided on both sides of the inner wall of the conveyor belt 203. The two slide bars 205 are respectively slidably installed inside the annular chute 206 located on both sides of the outer surface of the first metal support conveyor roller 204 and the second support metal conveyor roller 207, and a soft magnetic strip 208 that fits the inner wall of the annular chute 206 is fixedly provided on the surface of the slide bar 205 facing the inner wall of the annular chute 206; A wire reel 3 is placed on the upper end surface of the supporting wire reel placement platform 2, and an automatic wire reel positioning and clamping mechanism is provided on the outer side of the wire reel 3. The automatic wire reel positioning and clamping mechanism includes two horizontal bar cylinders 4, two rubber clamping heads 14, two circular internal thread grooves 15, two sensor cameras 16 and a synchronous moving mechanism. The piston rods of the two horizontal bar cylinders 4 are respectively fixedly connected to the two sides of the lower end surface of the supporting wire reel placement platform 2; The two circular internal thread grooves 15 are respectively located on the opposite surfaces of the two rubber clamping heads 14 , the two sensor cameras 16 are respectively fixedly installed inside the two circular internal thread grooves 15 , and the synchronous movement mechanism can drive the two rubber clamping heads 14 to move inward or outward synchronously.

[0019] A control panel 18 is fixedly installed on one side of the upper end surface of the wire drum pay-off machine 1, and the wire drum pay-off machine 1 and the wire drum automatic positioning and clamping mechanism are electrically connected to the wire drum pay-off machine 1; the wire drum pay-off machine 1 and the wire drum automatic positioning and clamping mechanism can be controlled by the control panel 18.

[0020] A wire reel clamping groove 19 is provided on both sides of the outer surface of the wire reel 3, and the positions of the two wire reel clamping grooves 19 correspond to the positions of the two rubber clamping heads 14 respectively; when the equipment needs to be used, the wire reel 3 is first placed on the upper end surface of the supporting wire reel placement table 2, and then the supporting wire reel placement table 2 and the wire reel 3 placed on the upper end surface of the supporting wire reel placement table 2 are pushed upward by two horizontal cylinders 4, and the position of the wire reel clamping groove 19 located on the outer surface of the wire reel 3 can be monitored by the sensor camera 16 installed in the circular internal thread groove 15 on the outer surface of the rubber clamping head 14. When the positions of the two wire reel clamping grooves 19 are respectively aligned with the two rubber clamping heads 14, the horizontal cylinder 4 will stop operating.

[0021] The synchronous movement mechanism includes a stepper motor 5, the output shaft of the stepper motor 5 is connected to a transmission shaft 6 through a coupling, a shaft 7 is provided on both sides of the transmission shaft 6, and the two shafts 7 are connected in series with the transmission shaft 6 through a synchronous chain 8; a first bevel gear 9 is provided on the lower fixed sleeve of the outer surface of the shaft 7, and the first bevel gear 9 is meshed with a second bevel gear 10; the axis of the second bevel gear 10 is connected to a threaded rod 11, and one side of the outer surface of the threaded rod 11 is provided with an internal thread sleeve 12 matching its external thread, and the internal thread sleeve The lower end surface of 12 is fixedly connected with a moving column 13; the lower end surface of the moving column 13 is slidably connected to the inside of the wire drum unwinding machine 1, and the two rubber clamping heads 14 are respectively installed on the opposite surfaces of the two moving columns 13 through roller bearings; when the two wire drum clamping grooves 19 on the wire drum 3 are respectively aligned with the two rubber clamping heads 14, the stepper motor 5 will automatically start, and the stepper motor 5 can drive the transmission shaft 6 connected thereto and the shaft 7 connected in series with the transmission shaft 6 through the synchronous chain 8 to rotate together, and the rotating shaft The first bevel gear 9 fixedly sleeved on the lower side of the outer surface of the rotating shaft 7 and the second bevel gear 10 meshing therewith can be driven to rotate together. The rotating second bevel gear 10 can drive the threaded rod 11 connected to the axis of the second bevel gear 10 to rotate. Since the internal threaded sleeve 12 sleeved on the outer surface of the threaded rod 11 is fixed to the movable column 13, the internal threaded sleeve 12 cannot rotate with the rotation of the threaded rod 11. When the threaded rod 11 rotates, the internal threaded sleeve 12, which is threadedly connected to it but cannot rotate by itself, will rotate on the threaded rod 11. 1 moves forward and backward, and at this time, the two internal threaded sleeves 12 move inward synchronously. During the movement of the internal threaded sleeve 12, the movable column 13 fixed thereto and the rubber clamping head 14 installed on the movable column 13 will move inward together. The two rubber clamping heads 14 moving inward will respectively contact the two wire drum clamping grooves 19 located on the outer surface of the wire drum 3, so as to clamp and position the wire drum 3. The above technical solution can automatically position and clamp the wire drum 3, thereby improving the automation degree and convenience of the equipment.

[0022] A transparent cover 17 is provided on the outside of the sensing camera 16, and the bottom end of the transparent cover 17 is located inside the circular internal thread groove 15, and the transparent cover 17 located inside the circular internal thread groove 15 is connected to the circular internal thread groove 15 through a threaded structure; the transparent cover 17 can protect the sensing camera 16.

[0023] A slide bar 205 is fixedly provided on the inner wall of the conveyor belt 203, which is slidably connected to the inner side of the annular slide groove 206 of the outer surface of the first metal support conveyor roller 204 and the second support metal conveyor roller 207. The conveyor belt 203 can be fixed to the first metal support conveyor roller 204 and the second support metal conveyor roller 207 by means of a soft magnetic strip 208 fixed on the slide bar 205. The upper end surface of the second support metal conveyor roller 207 is arc-shaped by the support of a plurality of arc-shaped metal conveyor rollers 207. The arc-shaped surface can fit the bottom end of the wire drum 3 as much as possible. When the wire drum 3 rotates, the conveyor belt 203 that fits the bottom end thereof will rotate therewith. The wire drum 3 can be supported by the conveyor belt 203, thereby reducing the external pressure on the two rubber clamping heads 14. The service life of the rubber clamping heads 14 is improved by the above technical solution.

[0024] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A material rack positioning mechanism for an automatic production line, comprising a wire reel pay-off machine (1), characterized in that: A supported wire drum placement table (2) is installed on the lower side of the wire drum pay-off machine (1), the supported wire drum placement table (2) comprising a square table (201), a square groove (202) is provided in the middle of the upper end surface of the square table (201), a conveyor belt (203) is provided inside the square groove (202), a first metal support conveyor roller (204) is provided at both ends of the lower side of the conveyor belt (203), a plurality of second support metal conveyor rollers (207) arranged in an arc shape are provided on the upper side of the conveyor belt (203), and the upper end surface of the conveyor belt (203) is in an arc shape; An annular sliding groove (206) is provided on both sides of the outer surface of the first metal support conveying roller (204) and the second metal support conveying roller (207); A slide bar (205) is fixedly provided on both sides of the inner wall of the conveyor belt (203), and the two slide bars (205) are respectively slidably installed inside the annular slide groove (206) located on both sides of the outer surface of the first metal support conveyor roller (204) and the second support metal conveyor roller (207), and a soft magnetic strip (208) that fits the inner wall of the annular slide groove (206) is fixedly provided on the surface of the slide bar (205) facing the inner wall of the annular slide groove (206); A wire reel (3) is placed on the upper end surface of the support type wire reel placement platform (2), and an automatic wire reel positioning and clamping mechanism is provided on the outer side of the wire reel (3), wherein the automatic wire reel positioning and clamping mechanism comprises two single-bar cylinders (4), two rubber clamping heads (14), two circular internal thread grooves (15), two sensor cameras (16) and a synchronous moving mechanism, and the piston rods of the two single-bar cylinders (4) are respectively fixedly connected to the two sides of the lower end surface of the support type wire reel placement platform (2); The two circular internal thread grooves (15) are respectively located on opposite surfaces of the two rubber clamping heads (14); the two sensor cameras (16) are respectively fixedly mounted inside the two circular internal thread grooves (15); and the synchronous movement mechanism can drive the two rubber clamping heads (14) to move synchronously inward or outward.

2. The rack positioning mechanism for an automatic production line according to claim 1, characterized in that: The synchronous movement mechanism comprises a stepper motor (5), the output shaft of the stepper motor (5) being connected to a transmission shaft (6) via a coupling, a shaft (7) being provided on both sides of the transmission shaft (6), and the two shafts (7) being connected in series with the transmission shaft (6) via a synchronous chain (8).

3. The rack positioning mechanism for an automatic production line according to claim 2, characterized in that: A first bevel gear (9) is provided on the lower fixed sleeve of the outer surface of the rotating shaft (7), and the first bevel gear (9) is meshed with a second bevel gear (10).

4. The rack positioning mechanism for an automatic production line according to claim 3, characterized in that: The axis of the second bevel gear (10) is connected to a threaded rod (11), one side of the outer surface of the threaded rod (11) is sleeved with an internal thread sleeve (12) matching its external thread, and the lower end surface of the internal thread sleeve (12) is fixedly connected to a moving column (13).

5. The rack positioning mechanism for an automatic production line according to claim 4, characterized in that: The lower end surface of the movable column (13) is slidably connected to the interior of the wire drum pay-off machine (1), and the two rubber clamping heads (14) are respectively mounted on opposite surfaces of the two movable columns (13) via roller bearings.

6. The rack positioning mechanism for an automatic production line according to claim 1, characterized in that: A transparent cover (17) is provided on the outside of the sensing camera (16), the bottom end of the transparent cover (17) is located inside the circular internal thread groove (15), and the transparent cover (17) located inside the circular internal thread groove (15) is connected to the circular internal thread groove (15) via a thread structure.

7. The rack positioning mechanism for an automatic production line according to claim 1, characterized in that: A control panel (18) is fixedly mounted on one side of the upper end surface of the wire reel pay-off machine (1), and the wire reel pay-off machine (1) and the wire reel automatic positioning clamping mechanism are both electrically connected to the wire reel pay-off machine (1).

8. The material rack positioning mechanism for an automatic production line according to claim 2, characterized in that: A wire drum clamping groove (19) is provided on both sides of the outer surface of the wire drum (3), and the positions of the two wire drum clamping grooves (19) correspond to the positions of the two rubber clamping heads (14) respectively.

9. The method for using the rack positioning mechanism for an automatic production line according to claims 1 to 8, characterized in that: The method of use comprises the following steps: Step A: firstly place the wire reel (3) on the upper end surface of the supporting wire reel placement platform (2), then push the supporting wire reel placement platform (2) and the wire reel (3) placed on the upper end surface of the supporting wire reel placement platform (2) upwards through two horizontal cylinders (4), and monitor the position of the wire reel clamping groove (19) located on the outer surface of the wire reel (3) through a sensor camera (16) installed in a circular internal thread groove (15) on the outer surface of a rubber clamping head (14). When the positions of the two wire reel clamping grooves (19) are respectively aligned with the two rubber clamping heads (14), the horizontal cylinder (4) will stop operating; Step B: When the two wire drum clamping grooves (19) on the wire drum (3) are aligned with the two rubber clamping heads (14), the stepper motor (5) will be automatically started. The stepper motor (5) can drive the transmission shaft (6) connected thereto and the shaft (7) connected in series with the transmission shaft (6) through the synchronous chain (8) to rotate together. The rotating shaft (7) can drive the first bevel gear (9) fixedly sleeved on the lower side of the outer surface of the shaft (7) and the second bevel gear (10) meshing therewith to rotate together. The rotating second bevel gear (10) can drive the threaded rod (11) connected to the axis of the second bevel gear (10) to rotate. Since the inner thread sleeve (11) sleeved on the outer surface of the threaded rod (11) The inner thread sleeve (12) is fixed to the movable column (13), so the inner thread sleeve (12) cannot rotate with the rotation of the threaded rod (11). When the threaded rod (11) rotates, the inner thread sleeve (12) which is threadedly connected to it but cannot rotate by itself will move back and forth on the outer surface of the threaded rod (11). At this time, the two inner thread sleeves (12) move inward synchronously. During the movement of the inner thread sleeve (12), the movable column (13) fixed thereto and the rubber clamping head (14) installed on the movable column (13) will move inward together. The two rubber clamping heads (14) moving inward will respectively contact the two wire drum clamping grooves (19) located on the outer surface of the wire drum (3), thereby clamping and positioning the wire drum (3); Step C: A slide bar (205) is fixedly provided on the inner wall of the conveyor belt (203) and is inside an annular slide groove (206) that is slidably connected to the outer surfaces of the first metal support conveyor roller (204) and the second support metal conveyor roller (207). The conveyor belt (203) is fixed to the first metal support conveyor roller (204) and the second support metal conveyor roller (207) by means of a soft magnetic strip (208) fixed on the slide bar (205). The upper end surface of the second support metal conveyor roller (207) is arc-shaped by means of the support of a plurality of arc-shaped metal conveyor rollers (207). The arc-shaped surface is thus able to fit as closely as possible to the bottom end of the wire drum (3). When the wire drum (3) rotates, the conveyor belt (203) that fits the bottom end thereof will rotate together with it.

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