CN210778430U - Double-gold hot riveting unit of circuit breaker - Google Patents

Abstract

A double-gold hot riveting unit of a circuit breaker is sequentially provided with a plastic piece feeding module, a moving contact feeding module, a braided wire feeding module, a double-gold piece feeding module and a material distribution disc for assembly, wherein the plastic piece feeding module comprises a plastic piece vibration disc for transmitting plastic pieces and a plastic piece grabbing device, the moving contact feeding module comprises a moving contact vibration disc for transmitting a moving contact and a moving contact grabbing device, the braided wire feeding module comprises a braided wire coil disc for transmitting braided wires, a braided wire cutting tool bit and a braided wire grabbing device, the moving contact hot riveting module and the double-gold piece hot riveting module comprise a power supply, an electrode connector and a positioning pressing plate, the electrode connector is electrified through the power supply, the contact resistance generates heat to weld the braided wires and the moving contact, the braided wires and the double-gold pieces, and the design realizes automatic feeding production of the circuit breaker, the production efficiency is greatly improved.

Description

Double-gold hot riveting unit of circuit breaker

Technical Field

The utility model relates to a rivet hot unit especially relates to a double-gold rivet hot unit of circuit breaker.

Background

Along with the development of society, the automation level is constantly improved, the condition of manual carrying, loading and unloading and loading still exists in the production process of many products in China at present, for example, in the loading production process of circuit breaker plastic parts, moving contacts, braided wires and bimetallic strips, manual carrying and loading are mostly adopted, the production efficiency is low, the product performance is unstable, the labor intensity of operators is increased, therefore, an automatic loading production unit of the circuit breaker plastic parts, the moving contacts, the braided wires and the bimetallic strips needs to be designed, the production efficiency is improved, manual operation can be liberated from heavy physical labor, and the stability of product production is ensured.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the not enough of above-mentioned technique, provide a two golden hot riveting units of circuit breaker, realized the automatic material loading production of circuit breaker, promoted production efficiency greatly.

The utility model discloses technical scheme: a double-gold hot riveting unit of a circuit breaker comprises a plastic part, a moving contact, a braided wire and a double-gold sheet, wherein the double-gold hot riveting unit is sequentially provided with a plastic part feeding module, a moving contact feeding module, a braided wire feeding module, a double-gold sheet feeding module and a distributing disc for assembly, the plastic part feeding module comprises a plastic part vibration disc for conveying the plastic part and a plastic part grabbing device, the plastic part grabbing device comprises a first feeding claw for grabbing the plastic part and a first feeding cylinder for driving the first feeding claw to feed, the distributing disc and the plastic part vibration disc are positioned in the displacement track of the first feeding claw, the plastic part can be conveyed to the distributing disc by the first feeding claw, a mounting groove is concavely arranged on one side of the plastic part, one end of the moving contact is matched with the mounting groove, the feeding module comprises a vibration disc for conveying the moving contact and a moving contact grabbing device, the moving contact grabbing device comprises a second feeding claw for grabbing the moving contact and a second feeding cylinder for driving the second feeding claw to feed, the material distribution disc and the moving contact vibration disc are positioned in the displacement track of the second feeding claw, the moving contact can be fed into the mounting groove of the plastic part by the second feeding claw, the braided wire feeding module comprises a braided wire coil disc for transmitting braided wires, a braided wire cutting tool bit and a braided wire grabbing device, the braided wire coil disc comprises braided wires and a plurality of braided wire conveying rollers, conveying grooves are formed in the concave surfaces of the wheel surfaces of the braided wire conveying rollers, the braided wire conveying rollers are arranged up and down, the braided wires are clamped between the upper conveying grooves and the lower conveying grooves, the braided wire conveying rollers can convey the braided wires, and the braided wire cutting tool bit comprises a cutting tool bit and a cutting driving motor for driving the cutting tool bit, the cutting tool bit is internally provided with a cutting gap, the cutting gap is larger than the height of the braided wire, the cutting driving motor drives the cutting tool bit to cut off the braided wire, the braided wire grabbing device comprises a third feeding claw for grabbing the braided wire and a third feeding cylinder for driving the third feeding claw to feed, the third feeding claw can send the cut braided wire to a material distribution disc, the bimetallic strip feeding module comprises a bimetallic strip vibrating disc for transmitting bimetallic strips and a bimetallic strip grabbing device, the bimetallic strip grabbing device comprises a fourth feeding claw for grabbing the bimetallic strips and a fourth feeding cylinder for driving the fourth feeding claw to feed, the material distribution disc and the cutting tool bit of the braided wire are positioned in the displacement track of the fourth feeding claw, the fourth feeding claw can send the bimetallic strips to the material distribution disc, and the material distribution disc can be used for feeding according to a material feeding module, The assembly procedures of the moving contact feeding module, the braided wire feeding module and the double-sequin feeding module rotate in sequence.

By adopting the technical scheme, the double-gold hot riveting unit is sequentially provided with a plastic piece feeding module, a moving contact feeding module, a braided wire feeding module, a double-gold piece feeding module and a material distribution disc for assembly, the plastic piece feeding module, the moving contact feeding module, the braided wire feeding module and the double-gold piece feeding module are arranged around the material distribution disc for one circle, the production process of the scheme comprises the steps of firstly feeding the plastic piece to the material distribution disc through a first feeding claw, then feeding the moving contact to the material distribution disc through a second feeding claw, and then transmitting the braided wire through a braided wire transmission roller of the braided wire feeding module, and cutting off the braided wire through a braided wire cutting head, the design is also provided with a braided wire hot riveting and welding module between the braided wire transmission roller and the braided wire cutting head, wherein the braided wire hot riveting and welding module comprises a third power supply, a third electrode joint, a base and a third positioning pressing plate, the third positioning pressing plate is positioned in the displacement range of the braided wire and the base, the braided wire is conveyed on the base, the braided wire can be positioned on the base in a compression joint mode by the third positioning pressing plate, the braided wire is positioned between third electrode connectors, third contact resistors are arranged in the third electrode connectors, a third power supply is used for electrifying the third electrode connectors, the third contact resistors generate heat to weld the surface of the braided wire to ensure that the surface of the braided wire is smooth, the braided wire is grabbed by a third feeding claw, and the bimetallic piece is transmitted by the bimetallic piece feeding module and the bimetallic piece vibrating disc, the bimetallic piece vibrating disc is designed with a visual system, the front and back sides of the double-gold pieces can be identified, the double-gold pieces are grabbed to the material distribution disc by the fourth feeding claw, the double-gold hot riveting unit designed in this way realizes automatic feeding production of the circuit breaker, and greatly improves production efficiency.

The utility model discloses a further setting: still include moving contact rivet hot welding module, moving contact rivet hot welding module includes first power, first electrode joint and first locating pressing plate, and first locating pressing plate is located the displacement scope of branch charging tray, first locating pressing plate can carry out the crimping location with working of plastics, moving contact and braided wire in the branch charging tray, braided wire and moving contact are located between the first electrode joint, be provided with first contact resistance in the first electrode joint, first power is for first electrode joint circular telegram, and first contact resistance produces the heat and makes braided wire and moving contact weld.

The utility model discloses a further setting: still include two gold plate rivet hot welding module, two gold plate rivet hot welding module includes second power, second electrode joint and second positioning pressing plate, and second positioning pressing plate is located the displacement range of branch charging tray, second positioning pressing plate can carry out the crimping location with braided wire and two gold plates in the branch charging tray, braided wire and two gold plates are located between the second electrode joint, be provided with second contact resistance in the second electrode joint, the second power is for second electrode joint circular telegram, and second contact resistance produces the heat and makes braided wire and two gold plates weld.

By adopting the technical scheme, the moving contact and the braided wire are welded by the moving contact hot riveting welding module, the plastic piece is plastic, and the moving contact is positioned in the mounting groove of the plastic piece, so when the moving contact hot riveting welding module operates, the plastic piece is slightly melted under the action of high temperature, the moving contact and the plastic piece are synchronously fixed, and finally the braided wire and the bimetallic strip are welded by the bimetallic strip hot riveting welding module to form a finished product, the design corresponds to the plastic piece feeding module and is provided with the first infrared detection sensor, the second infrared detection sensor corresponding to the moving contact feeding module, the third infrared detection sensor corresponding to the braided wire feeding module, the fourth infrared detection sensor corresponding to the bimetallic strip feeding module, and a finished product discharging module is designed behind the bimetallic strip hot riveting welding module and comprises a finished product discharging conveyor belt and a waste product discharging box, finished product ejection of compact module detects through first infrared detection sensor, second infrared detection sensor, third infrared detection sensor, fourth infrared detection sensor and will get into finished product ejection of compact conveyer belt unerringly, otherwise will get into waste product ejection of compact case, and the two golden hot riveting units of design like this have realized the automatic material loading welding production of circuit breaker moving contact and braided wire, two gold sheets and braided wire, have promoted production efficiency greatly.

The utility model discloses a further setting: the material distribution disc is provided with a material distribution carrier, and the material distribution carrier is provided with a material distribution groove matched with the plastic part, the moving contact, the braided wire and the bimetallic strip.

By adopting the technical scheme, the design of the material distributing carrier is more convenient for the fixed assembly of the plastic part, the moving contact, the braided wire and the double-gold piece, and meanwhile, the moving contact hot riveting welding module and the double-gold piece hot riveting welding module are welded more easily and fixedly, so that the production efficiency and the production quality are greatly improved.

The utility model discloses a further setting: braided wire conveying gyro wheel includes gyro wheel, mount, rotation axis and is used for driving the rotatory gyro wheel driving motor of rotation axis, be provided with rotatory core in the rotation axis, be provided with a plurality of balls between rotatory core and the rotation axis, rotation axis one end is fixed in the mount, and gyro wheel fixed connection can drive the gyro wheel rotation in rotatory core through gyro wheel driving motor drive rotatory core.

Adopt above-mentioned technical scheme, the gyro wheel quantity of this scheme is 7, and 3 lower floors on upper strata are 4, because the braided wire charging tray forms for circular coiling, and such range can be levelled and flattened the arrangement to the braided wire, is more convenient for to the conveying of braided wire.

Drawings

FIG. 1 is a diagram illustrating an overall structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a plastic feeding module according to an embodiment of the present invention;

fig. 3 is a structural diagram of a moving contact feeding module according to an embodiment of the present invention;

FIG. 4 is a drawing of a braided wire feeding module structure according to an embodiment of the present invention;

FIG. 5 is a structural diagram of a two-sequin feeding module according to an embodiment of the present invention;

fig. 6 is a structural diagram of a hot rivet welding module of a moving contact according to an embodiment of the present invention;

FIG. 7 is a structural diagram of a double-gold-piece hot-rivet welding module according to an embodiment of the present invention;

FIG. 8 is a structural diagram of a hot rivet welding principle according to an embodiment of the present invention;

fig. 9 is a diagram of a material distributing carrier according to an embodiment of the present invention.

Detailed Description

The double-gold hot riveting unit of the circuit breaker shown in fig. 1 to 9 comprises a plastic part 1, a movable contact 2, a braided wire 3 and a double-gold-plate 4, wherein the double-gold hot riveting unit is sequentially provided with a plastic part feeding module 11, a movable contact feeding module 12, a braided wire feeding module 13, a double-gold-plate feeding module 14 and a distributing tray 17 for assembly, the plastic part feeding module 11 comprises a vibration plastic part tray 21 for conveying the plastic part and a plastic part grabbing device, the plastic part grabbing device comprises a first feeding claw 22 for grabbing the plastic part 1 and a first feeding cylinder 23 for driving the first feeding claw 22 to feed, the distributing tray 17 and the plastic part vibration tray 21 are positioned within the displacement track of the first feeding claw 22, the first feeding claw 22 can feed the plastic part 1 to the distributing tray 17, one side of the plastic part 1 is provided with an inward-concave mounting groove, one end of the moving contact 2 is matched with the mounting groove, the moving contact feeding module 12 comprises a moving contact vibration disc 31 for transmitting the moving contact 2 and a moving contact grabbing device, the moving contact grabbing device comprises a second feeding claw 32 for grabbing the moving contact and a second feeding cylinder 33 for driving the second feeding claw 32 to feed, the material distribution disc 17 and the moving contact vibration disc 31 are located in the displacement track of the second feeding claw 32, the moving contact 2 can be sent to the mounting groove of the plastic part 1 by the second feeding claw 32, the braided wire feeding module 13 comprises a braided wire coiling disc 41 for transmitting the braided wire 3, a braided wire cutting tool bit and a braided wire grabbing device, the braided wire coiling disc 41 comprises the braided wire 3 and a plurality of braided wire conveying rollers 45, and a conveying groove 46 is concavely arranged on the wheel surface of the braided wire conveying rollers 45, the plurality of braided wire conveying rollers 45 are arranged up and down, the braided wire 3 is clamped between the upper conveying groove 46 and the lower conveying groove 46, the braided wire conveying rollers 45 can convey the braided wire 3, the braided wire cutting tool bit 42 comprises a cutting tool bit 42 and a cutting driving motor 47 used for driving the cutting tool bit 42, a cutting gap is arranged in the cutting tool bit 42 and is larger than the height of the braided wire 3, the cutting driving motor 37 drives the cutting tool bit 42 to cut off the braided wire 3, the braided wire gripping device comprises a third feeding claw 43 used for gripping the braided wire and a third feeding air cylinder 44 used for driving the third feeding claw 43 to feed, the third feeding claw 43 can send the cut-off braided wire 3 to the distributing disc 17, and the bimetallic strip feeding module 16 comprises a bimetallic strip vibrating disc 51 used for transmitting bimetallic strips 4 and a bimetallic strip gripping device, the double-sequin grabbing device comprises a fourth feeding claw 52 used for grabbing double sequin 4 and a fourth feeding cylinder 53 used for driving the fourth feeding claw 52 to feed, the distributing tray 17 and the braided wire cutting tool bit are located within the displacement track of the fourth feeding claw 52, the fourth feeding claw 52 can feed the double sequin 4 to the distributing tray 17, and the distributing tray 17 can rotate in sequence according to the assembling procedures of the feeding module 11, the moving contact feeding module 12, the braided wire feeding module 13 and the double sequin feeding module 14.

This design double-gold rivet hot unit has set gradually working of plastics pay-off module 11, moving contact pay-off module 12, braided wire pay-off module 13, double-gold piece pay-off module 14 and be used for the branch charging tray 17 of assembly, working of plastics pay-off module 11, moving contact pay-off module 12, braided wire pay-off module 13, double-gold piece pay-off module 14 encircles a week setting of branch charging tray 17, the flow of this scheme production at first sends working of plastics 1 to branch charging tray 17 through first feeding claw 22, rethread second feeding claw 32 sends moving contact 2 to branch charging tray 17, on next step, braided wire 3 is transmitted through braided wire conveying roller 45 of braided wire pay-off module 13, cut off braided wire 3 through braided wire cutting tool bit 42, this design still is equipped with braided wire rivet hot welding module 48 between braided wire conveying roller 45 and braided wire cutting tool bit 42, wire rivet hot welding module 48 includes third power supply, the power supply is connected with the, The third electrode joint, the base 49 and the third positioning pressing plate are arranged in the displacement range of the braided wire 3 and the base 49, the braided wire 3 is conveyed on the base 49, the braided wire 3 can be pressed and positioned on the base 49 by the third positioning pressing plate, the braided wire 3 is arranged between the third electrode joint, a third contact resistor is arranged in the third electrode joint, a third power supply is used for electrifying the third electrode joint, the third contact resistor generates heat to weld the surface of the braided wire 3 to ensure that the surface of the braided wire 3 is smooth, the braided wire 3 is grabbed by the third feeding claw 43, the bimetallic strip feeding module 14 and the bimetallic strip vibrating disc 51 are used for transmitting the bimetallic strips 4, the bimetallic strip vibrating disc 51 is designed with a vision system 54 which can identify the front and back surfaces of the bimetallic strips 4, the bimetallic strips 4 are grabbed to the distributing disc 17 by the fourth feeding claw 52, the double-gold hot riveting unit designed in this way realizes automatic feeding production of the circuit breaker, and greatly improves production efficiency.

Still include moving contact rivet hot welding module 15, moving contact rivet hot welding module 15 includes first power, first electrode joint 61 and first locating pressing plate 62, and first locating pressing plate 62 is located the displacement scope of branch charging tray 17, first locating pressing plate 62 can carry out the crimping location with working of plastics 1, moving contact 2 and braided wire 3 in the branch charging tray 17, braided wire 3 and moving contact 2 are located between the first electrode joint 61, be provided with first contact resistance in the first electrode joint 61, first power is for first electrode joint 61 circular telegram, and first contact resistance produces the heat and makes braided wire 3 and moving contact 2 weld.

Still include two gold plate rivet hot welding module 16, two gold plate rivet hot welding module 16 includes second power, second electrode joint 71 and second positioning pressing board, and second positioning pressing board is located the displacement range of branch charging tray 17, second positioning pressing board can carry out the crimping location with braided wire 3 and two gold plates 4 in the branch charging tray 17, braided wire 3 and two gold plates 4 are located between the second electrode joint 71, be provided with second contact resistance in the second electrode joint 71, the second power is circular telegram for second electrode joint 71, and second contact resistance produces heat and makes braided wire 3 and two gold plates 4 weld.

The design welds the moving contact 2 and the braided wire 3 through the moving contact hot riveting welding module 15, because the plastic part 1 is plastic, the moving contact 2 is positioned in the mounting groove of the plastic part 1, when the moving contact hot riveting welding module 15 operates, the plastic part 1 is slightly melted under the action of high temperature, the moving contact 2 and the plastic part 1 are synchronously fixed, finally, the braided wire 3 and the bimetallic strip 4 are welded through the bimetallic strip hot riveting welding module 16 to form a finished product, the design is provided with a first infrared detection sensor corresponding to the plastic part feeding module 11, a second infrared detection sensor corresponding to the moving contact feeding module 12, a third infrared detection sensor corresponding to the braided wire feeding module 13, a fourth infrared detection sensor corresponding to the bimetallic strip feeding module 14, and a finished product discharging module after the bimetallic strip hot riveting welding module 16, the finished product discharging module comprises a finished product discharging conveyor belt and a waste product discharging box, the finished product discharging module enters the finished product discharging conveyor belt without errors through detection of a first infrared detection sensor, a second infrared detection sensor, a third infrared detection sensor and a fourth infrared detection sensor, otherwise, the finished product discharging module enters the waste product discharging box, the moving contact hot rivet welding module, the double-gold-piece hot rivet welding module and the braided wire hot rivet welding module all adopt resistance welding, the resistance welding mode is that a workpiece 103 to be welded is tightly pressed between two electrodes of an upper electrode 101 and a lower electrode 102, current is conducted, the workpiece is processed to be in a molten or plastic state through resistance heat generated by the current flowing through the contact surface and the adjacent area of the workpiece, and metal combination is formed, and the double-gold hot rivet unit designed in this way realizes automatic feeding welding production of the moving contact 1 and the braided wire 3 of the circuit breaker, and the double-gold-piece 4 and the braided wire 3, the production efficiency is greatly improved.

The distributing tray 17 is provided with a distributing carrier 55, and the distributing carrier 55 is provided with a distributing groove matched with the plastic part 1, the moving contact 2, the braided wire 3 and the bimetallic strip 4.

Divide the design of material carrier 55 to be more convenient for to the fixed assembly of working of plastics 1, moving contact 2, braided wire 3 and two gold sheets 4, change in welded fastening simultaneously when moving contact rivet hot welding module 15 and two gold sheets rivet hot welding module 16's welding, improved production efficiency and production quality greatly.

Braided wire conveying roller 45 includes gyro wheel, mount, rotation axis and is used for driving the rotatory gyro wheel driving motor of rotation axis, be provided with rotatory core in the rotation axis, be provided with a plurality of balls between rotatory core and the rotation axis, rotation axis one end is fixed in the mount, and gyro wheel fixed connection can drive the gyro wheel rotation in rotatory core through gyro wheel driving motor drive rotatory core.

The gyro wheel quantity of this scheme is 7, and 3 lower floors on upper strata are 4, because 3 charging trays of braided wire coil for circular and form, such range can be evened up the arrangement to braided wire 3, is more convenient for to the conveying of braided wire 3.

Claims (5)

1. A double-gold hot riveting unit of a circuit breaker comprises a plastic part, a moving contact, a knitting wire and a double-gold sheet, and is characterized in that the double-gold hot riveting unit is sequentially provided with a plastic part feeding module, a moving contact feeding module, a knitting wire feeding module, a double-gold sheet feeding module and a distributing disc for assembly, the plastic part feeding module comprises a plastic part vibrating disc for conveying the plastic part and a plastic part grabbing device, the plastic part grabbing device comprises a first feeding claw for grabbing the plastic part and a first feeding cylinder for driving the first feeding claw to feed, the distributing disc and the plastic part vibrating disc are positioned in the displacement track of the first feeding claw, the plastic part can be conveyed to the distributing disc by the first feeding claw, a mounting groove is concavely arranged on one side of the plastic part, one end of the moving contact is matched with the mounting groove, the moving contact feeding module comprises a moving contact vibration disc and a moving contact grabbing device, the moving contact grabbing device comprises a second feeding claw and a second feeding cylinder, the second feeding claw is used for grabbing a moving contact, the second feeding cylinder is used for driving the second feeding claw to feed materials, the material distribution disc and the moving contact vibration disc are located in the displacement track of the second feeding claw, the second feeding claw can send the moving contact to the mounting groove of a plastic part, the braided wire feeding module comprises a braided wire coil disc, a braided wire cutting tool bit and a braided wire grabbing device, the braided wire coil disc comprises a braided wire and a plurality of braided wire conveying rollers, the wheel surface of each braided wire conveying roller is inwards concave and provided with a conveying groove, the plurality of braided wire conveying rollers are arranged up and down, and the braided wire is clamped between the upper conveying groove and the lower conveying groove, the braided wire conveying roller can convey braided wires, the braided wire cutting tool bit comprises a cutting tool bit and a cutting driving motor used for driving the cutting tool bit, a cutting gap is formed in the cutting tool bit, the cutting gap is larger than the height of the braided wires, the cutting driving motor drives the cutting tool bit to cut off the braided wires, the braided wire grabbing device comprises a third feeding claw used for grabbing the braided wires and a third feeding cylinder used for driving the third feeding claw to feed the braided wires, the third feeding claw can feed the cut braided wires to a material distributing disc, the bimetallic strip feeding module comprises a bimetallic strip vibrating disc used for conveying bimetallic strips and a bimetallic strip grabbing device, the bimetallic strip grabbing device comprises a fourth feeding claw used for grabbing the bimetallic strips and a fourth feeding cylinder used for driving the fourth feeding claw to feed the materials, and the material distributing disc and the wire cutting tool bit are located in the displacement track of the fourth feeding claw, the fourth feeding claw can feed the double tinsels to the material distribution disc, and the material distribution disc can rotate in sequence according to the assembly procedures of the plastic piece feeding module, the moving contact feeding module, the braided wire feeding module and the double tinsels feeding module.

2. The double-gold hot riveting unit of the circuit breaker according to claim 1, further comprising a moving contact hot riveting and welding module, wherein the moving contact hot riveting and welding module comprises a first power supply, a first electrode connector and a first positioning pressing plate, the first positioning pressing plate is located within a displacement range of the material distribution disc, the first positioning pressing plate can press and position a plastic part, a moving contact and a braided wire in the material distribution disc, the braided wire and the moving contact are located between the first electrode connectors, a first contact resistor is arranged in the first electrode connector, the first power supply energizes the first electrode connector, and the first contact resistor generates heat to weld the braided wire and the moving contact.

3. The double-gold hot riveting unit of the circuit breaker according to claim 1, further comprising a double-gold-sheet hot riveting welding module, wherein the double-gold-sheet hot riveting welding module comprises a second power supply, a second electrode connector and a second positioning pressing plate, the second positioning pressing plate is located in a displacement range of the distribution disc, the second positioning pressing plate can press and position the braided wire and the double gold sheets in the distribution disc, the braided wire and the double gold sheets are located between the second electrode connectors, a second contact resistor is arranged in the second electrode connectors, the second power supply energizes the second electrode connectors, and the second contact resistor generates heat to weld the braided wire and the double gold sheets.

4. The double-gold hot riveting unit of the circuit breaker according to claim 1, wherein the distributing tray is provided with a distributing carrier, and the distributing carrier is provided with a distributing groove matched with a plastic piece, a movable contact, a braided wire and a double-gold piece.

5. The double-gold hot riveting unit of the circuit breaker according to claim 1, wherein the braided wire conveying roller comprises a roller, a fixing frame, a rotating shaft and a roller driving motor for driving the rotating shaft to rotate, a rotating core is arranged in the rotating shaft, a plurality of balls are arranged between the rotating core and the rotating shaft, one end of the rotating shaft is fixed on the fixing frame, the roller is fixedly connected to the rotating core, and the roller is driven to rotate by the roller driving motor driving the rotating core.

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