Plastic single coil synchronous forming and binding equipment

Abstract

The utility model provides plastic single coil synchronous forming and binding equipment, which comprises a coil forming device and a book binding device, the coil forming device comprises a wire supply mechanism, a heating mechanism and a coil shaping mechanism, and the book binding device comprises a pressing ring penetrating mechanism, a book pressing mechanism and a shearing and bending mechanism. The wire supply mechanism comprises a wire roller and a wire winding roller, the heating mechanism comprises a heating inner core and a shell, a wire inlet and a wire outlet guider are arranged on the shell, the coil shaping mechanism comprises a wire winding shaft and three wire pressing rollers, and an outlet of the wire outlet guider is located at the front end of the wire winding shaft; the coil pressing and penetrating mechanism comprises three coil pressing rollers capable of rotating synchronously, the central axis between the coil pressing rollers and the winding shaft are coaxially distributed, the coil pressing mechanism comprises a coil pressing bottom plate and a coil pressing plate, and the shearing and bending mechanism comprises a pair of shearing and bending knives. According to the equipment, synchronous operation of coil forming and binding can be achieved, coil forming and binding stability is high, meanwhile, coils do not need to be cut into sections before binding, and material waste can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of book-type product processing and manufacturing equipment, and specifically relates to a plastic single coil synchronous molding and binding equipment. Background Art

[0002] In books and calendars, using plastic single coils for binding is a common method, which has the characteristics of low cost and easy page turning. When binding plastic single coils, the processed spiral single coils are inserted into the binding holes of the book one by one from one side by rotating. The molding and binding of existing single coils are usually carried out separately by separate equipment. Traditional plastic single coil molding equipment needs to run continuously and cannot be stopped, otherwise the cooling of the coil affects the molding quality. Therefore, the existing molding equipment is not easy to match the speed of the coil binding equipment. In addition, since the coil needs to be fed in a rotating manner during single coil binding, it is difficult to directly use a whole roll of single coils. Usually, the single coil is cut into coil segments of a certain length before binding. Both ends of the coil segment need to leave a coil margin for cutting and bending, which wastes a lot of materials. Utility Model Content

[0003] In view of the defects of the prior art, the utility model provides a device for simultaneously forming and binding a plastic single coil. To achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0004] A plastic single coil synchronous forming and binding device, including a coil forming device and a book binding device, the coil forming device is arranged at the front end, including a workbench, the workbench is provided with a wire feeding mechanism, a heating mechanism and a coil shaping mechanism; the wire feeding mechanism includes a wire roller that can rotate along the axial direction; the heating mechanism includes a heating inner core that can rotate along the axial direction, the surface of the heating inner core is provided with a spiral groove, the outside of the heating inner core is provided with a shell, the shell is provided with a wire inlet and a wire outlet guide, the wire inlet faces the wire roller; the coil shaping mechanism includes a winding shaft and three wire pressing rollers that are parallel to each other in the horizontal direction, the wire pressing rollers are distributed around the winding shaft in a herringbone shape and are tangent to the circumferential surface of the winding shaft, each wire pressing roller can rotate synchronously in the same direction, and the outlet of the wire outlet guide is located at the front end of the winding shaft; the book binding device is arranged at the rear The end includes a workbench 2, on which a ring pressing and ring passing mechanism, a base pressing mechanism and a shearing and bending mechanism are arranged; the ring pressing and ring passing mechanism includes three ring pressing rollers which are parallel to each other and flush at both ends and are distributed in a herring shape, two of the ring pressing rollers can be lifted or pressed down for reciprocating motion, and when the three ring pressing rollers are close to each other, a line connecting the centers of the tangent circles of the circumferential surfaces of the ring pressing rollers is defined as a central axis, the central axis is coaxially distributed with the winding shaft, and the ring pressing rollers can rotate synchronously in the same direction; the base pressing mechanism includes a base pressing bottom plate whose lower end is parallel to the central axis, a base pressing plate is provided parallel to the base pressing bottom plate, a base pressing cylinder is provided vertically toward the base pressing bottom plate, and the base pressing plate is driven by the base pressing cylinder to be pressed down toward the base pressing bottom plate, the shearing and bending mechanism includes a pair of shearing and bending knives, and the working position of the shearing and bending knife head part is in the area between the ring pressing rollers.

[0005] Preferably, a pair of winding rollers parallel to each other are provided between the wire roller and the wire inlet, a plurality of annular winding grooves are evenly distributed on the surface of the winding rollers along the length direction, and the distance between the two winding rollers is adjustable.

[0006] Preferably, a plurality of annular wire grooves 1 are evenly distributed on the surface of the crimping roller along the length direction, and the annular wire grooves 1 on adjacent crimping rollers are staggered one-third of the spacing in sequence.

[0007] Preferably, a first servo motor is provided on workbench one, and the heating core is driven to rotate by the first servo motor.

[0008] Furthermore, a synchronous pulley is provided at the front end of each crimping roller, and the first servo motor drives the crimping roller and the heating inner core to rotate synchronously through a synchronous belt and gear transmission.

[0009] Preferably, the surface of each pressing ring roller is provided with a plurality of annular wire grooves 2 which are evenly distributed along the length direction, and the annular wire grooves 2 on adjacent pressing ring rollers are staggered one-third of the spacing in sequence.

[0010] Preferably, each ring pressing roller is provided with bearing support rods near both ends, the bearing support rod on one of the ring pressing rollers is connected to the workbench two, and the bearing support rods on the other two ring pressing rollers are connected to a ring pressing roller lifting plate, the ring pressing roller lifting plate is parallel to the ring pressing roller, and a ring pressing cylinder is provided on the workbench two, which is vertically facing the ring pressing roller, and the ring pressing roller lifting plate is connected to the movable end of the ring pressing cylinder. When the ring pressing cylinder is actuated, the two ring pressing rollers are driven to approach or lift up the other ring pressing roller through the ring pressing roller lifting plate.

[0011] Preferably, a pressure ring roller positioning piece is provided at one end of the central axis, and a spiral positioning shaft is provided at the other end. The pressure ring roller positioning piece has a conical surface facing inward, and each pressure ring roller is provided with a positioning wheel and a synchronous pulley at one end close to the pressure ring roller positioning piece. When the pressure ring rollers approach each other, the positioning wheel abuts against the conical surface. A servo motor is provided on the workbench two, and the servo motor drives the pressure ring rollers to rotate synchronously in the same direction through a synchronous belt.

[0012] Preferably, the shearing and bending mechanism includes a transverse plate parallel to the pressure ring roller, and a shearing cylinder facing the central axis is provided on the workbench 2. The transverse plate is driven by the shearing cylinder to reciprocate toward the central axis. Two mounting blocks are provided on the transverse plate, and the shearing and bending knives are connected to the mounting blocks. The positions of the mounting blocks and the shearing and bending knives along the length direction of the transverse plate are adjustable.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the feeding end of the coil binding is connected with the output end of the coil forming, the coil forming and the coil binding are both driven by three rollers, the processing stability is greatly improved, the equipment running speed is easy to control, the processed single coil directly enters the binding process, the coil binding and coil forming are carried out simultaneously, the material flow is reduced, and the work efficiency is greatly improved. In addition, the single coil continuously enters the binding station, and there is no need to cut it into sections in advance. When cutting and bending, only the coil margin needs to be left at one end, which can effectively reduce the waste of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : Schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 : A schematic diagram of the local structure of the utility model.

[0016] Figure 3 : A schematic diagram of the local structure at B in the utility model.

[0017] Figure 4 : Schematic diagram of the local structure of the medium pressure ring through-ring mechanism of the utility model.

[0018] In the figures: 1. Coil forming device; 11. Workbench 1; 12. Wire supply mechanism; 121. Wire roller; 122. Wire winding roller; 123. Wire winding groove; 13. Heating mechanism; 131. Heating inner core; 132. Shell; 133. Wire inlet; 134. Wire outlet guide; 14. Coil shaping mechanism; 141. Wire winding shaft; 142. Wire pressing roller; 143. Annular wire groove 1; 144. Synchronous pulley 1; 15. First servo motor; 2. Book binding device; 21. Workbench 2; 22. Ring pressing mechanism; 221. Ring pressing roller ; 2211. Positioning wheel; 2212. Synchronous pulley 2; 222. Central axis; 223. Annular wire groove 2; 224. Bearing support rod; 225. Pressing ring roller lifting plate; 226. Pressing ring cylinder; 227. Pressing ring roller positioning piece; 228. Spiral positioning shaft; 229. Conical surface; 23. Pressing mechanism; 231. Pressing base plate; 232. Pressing plate; 233. Pressing cylinder; 24. Shearing and bending mechanism; 241. Shearing and bending knife; 242. Horizontal plate; 243. Shearing cylinder; 244. Mounting block; 25. Servo motor 2. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] A plastic single coil synchronous forming and binding equipment, referring to Figures 1 to 4As shown, it includes a coil forming device 1 and a book binding device 2. The coil forming device 1 is arranged at the front end, including a workbench 11, on which a wire feeding mechanism 12, a heating mechanism 13 and a coil shaping mechanism 14 are arranged. The wire feeding mechanism 12 includes a wire roller 121 that can be transported along the axial direction, and the heating mechanism 13 includes a heating inner core 131 that can be rotated along the axial direction. The heating inner core 131 is a cylindrical structure with a spiral groove on its surface. A shell 132 is arranged outside the heating inner core 131, and a wire inlet 133 and a wire outlet guide 134 are arranged on the shell. The wire inlet 133 is located at the beginning of the spiral groove on the surface of the heating inner core 131, and the wire outlet guide 134 is located at the end of the spiral groove. The wire inlet 133 faces the wire roller 121. The coil shaping mechanism 14 includes a winding shaft 141 and three pressing rollers 142 which are parallel to each other in the horizontal direction. The pressing rollers 142 are distributed in a herringbone shape around the winding shaft 141 and are circumscribed to the circumferential surface of the winding shaft 141. The bookbinding device 2 is arranged at the rear end, including a workbench 21, on which a pressing ring mechanism 22, a book pressing mechanism 23 and a shearing and bending mechanism 24 are provided; the pressing ring mechanism 22 includes three pressing rollers 221 which are parallel to each other and flush at both ends and are distributed in a herringbone shape. Two of the pressing rollers 221 can be lifted or pressed down for reciprocating motion. When the three pressing rollers 221 are close to each other, the center line of the tangent circles of the circumferential surfaces of the pressing rollers 221 is defined as the central axis 222. The central axis 222 and the winding shafts in the coil shaping mechanism 14 are connected. The wire shaft 141 is coaxially distributed, and each pressing ring roller 221 can rotate synchronously in the same direction; the pressing mechanism 23 includes a pressing base plate 231 whose lower end is parallel to the central axis 222, a pressing plate 232 is provided parallel to the pressing base plate 231, and a pressing cylinder 233 is provided vertically toward the pressing base plate 231, and the pressing plate 232 is driven by the pressing cylinder 233 to press downward toward the pressing base plate 231, and the shearing and bending mechanism 24 includes a pair of shearing and bending knives 241, and the working position of the blade part of the shearing and bending knife 241 is in the area between each of the pressing ring rollers 221. In a specific structure, a plurality of annular wire grooves 143 are evenly distributed along the length direction on the surface of each wire pressing roller 142, and the annular wire grooves 143 on adjacent wire pressing rollers 142 are staggered by one-third of the spacing in sequence front and back; a plurality of annular wire grooves 223 are evenly distributed along the length direction on the surface of each ring pressing roller 221, and the annular wire grooves 223 on adjacent ring pressing rollers 221 are staggered by one-third of the spacing in sequence front and back.

[0021] The working process of the equipment is as follows: the unprocessed plastic wire on the wire roller 121 is pre-inserted into the inner cavity of the heating mechanism 13 through the wire inlet 133, the heating inner core 131 rotates, so that the wire is wound along the spiral groove on the surface of the heating inner core 131, and passes through the outlet guide 134, and reaches the front end of the winding shaft 141 through the outlet of the outlet guide 134, and the wire is manually embedded into the annular wire groove 143 on the wire pressing roller 142. The three wire pressing rollers 142 rotate synchronously, and the wire is wound around the winding shaft 141 and moves forward in a spiral under the action of the annular wire groove 143 on the wire pressing roller 142. When the heating inner core 131 starts to heat, the heated and softened plastic filament is formed into a spiral single coil on the winding shaft 141 and output from the rear end of the winding shaft 141. The formed single coil is connected to the book binding device 2. In the initial state, it is manually connected. The single coil is introduced into the three pressing ring rollers 221 along the central axis 222 through a spiral positioning shaft 228. One of the pressing ring rollers 221 remains stationary, and a section of the coil ring at the end of the single coil is embedded in the annular wire groove 223 on the pressing ring roller 221. When the binding operation starts, the transmission mechanism transmits the book to be bound to the binding position, and the pressing cylinder 233 moves to push the pressing plate 232 to press the book against the pressing bottom plate 231. The transmission and feeding mechanism of the book does not belong to the part of the equipment provided by the utility model, and for those skilled in the art, the transmission and limiting of the book are conventional technical means. Therefore, the specific structure of the transmission mechanism is not specifically explained in this technical solution. At this time, the other two pressing rollers 221 are pressed down. After being pressed into place, the distance between the three pressing rollers 221 is adapted to the diameter of the single coil. The coil rings of the single coil are respectively embedded in the annular wire grooves 223 of the three pressing rollers 221. The plastic single coil is pressed between the three pressing rollers 221. The three pressing rollers 221 are driven by the driving mechanism to rotate synchronously, and the single coil is driven to rotate synchronously at the same time. The single coil moves forward in a spiral motion along the central axis 222. The single coils are inserted into the binding holes of the book one by one. When the ring is inserted, the pressing roller 221 stops rotating, and the two pressing rollers 221 above are lifted. The shearing and bending knife 241 works to cut and bend the coil, and the transmission mechanism withdraws the book from the binding position and transmits it to the next station. When the subsequent book is bound, after the coil is cut, the section of the coil to be bound near the front end is still kept on the spiral positioning shaft 228 and embedded in the annular wire groove 223 of one of the pressing rollers 221. The subsequent binding can be carried out continuously without manual intervention. The driving power of the heating core 131, the crimping roller 142 and the ring pressing roller 221 can be controlled by a program to make them run synchronously. The number of coils to be formed and processed is the same as the number of books to be bound. The feeding end of the coil binding is connected with the output end of the coil forming. Both the coil forming and the coil binding are driven by three rollers, which greatly improves the processing stability and makes the equipment running speed easy to control. The processed single coil directly enters the binding process. The coil binding and coil forming are carried out synchronously, which reduces the material flow and greatly improves the work efficiency.In addition, single coils enter the binding station continuously without being cut into sections in advance. When cutting and bending, only coil margin needs to be left at one end, which can effectively reduce material waste.

[0022] In a preferred embodiment, a pair of winding rollers 122 parallel to each other are provided between the wire roller 121 and the wire inlet 133. The surface of the winding roller 122 has a plurality of annular winding grooves 122 equidistantly distributed along the length direction, and the distance between the two winding rollers 122 is adjustable. The plastic wire on the wire roller 121 is first wound around the two winding rollers 122, and then connected to the heating mechanism 13 through the wire inlet 133. By providing the winding rollers 122, a certain tension can be applied to the wire, so that the process of winding the wire into the heating mechanism 13 is smoother.

[0023] In a preferred embodiment, a first servo motor 15 is provided on the workbench 11, and the heating inner core 131 is driven to rotate by the first servo motor 15. A synchronous pulley 144 is provided at the front end of each crimping roller 142, and the first servo motor 15 drives the crimping roller 142 and the heating inner core 131 to rotate synchronously through a synchronous belt and gear transmission. The crimping roller 142 and the heating inner core 131 are driven by the same power, which can ensure better synchronization of operation, and at the same time can reduce the number of power sources and reduce equipment costs.

[0024] In order to make the pressing ring rollers 221 better cooperate with the coil when they are close to each other, in a preferred embodiment, a pressing ring roller positioning piece 227 is provided at one end of the central axis 222, and a spiral positioning shaft 228 is provided at the other end. The pressing ring roller positioning piece 227 has a conical surface 229 facing inward, and each pressing ring roller 221 is provided with a positioning wheel 2211 and a synchronous pulley 2212 at one end close to the pressing ring roller positioning piece 227. When the pressing ring rollers 221 are close to each other, the positioning wheel 2211 abuts against the conical surface 229; a servo motor 25 is provided on the workbench 21, and the servo motor 25 drives each of the pressing ring rollers 221 to rotate synchronously in the same direction through a synchronous belt. In a specific application, the main part of the spiral positioning shaft 228 is a screw with a spiral groove on the circumferential surface. The screw part extends along the central axis 222 into the area corresponding to the annular groove 223 on each ring pressing roller 221. The outer end of the spiral positioning shaft 228 is provided with an L-shaped connecting part with the main part, and the connecting part is fixedly connected to the workbench 21. When the single coil is pre-sleeved, the coil ring rotates around the connecting part and then sleeves on the main part, matching with the spiral groove on the screw. The position of the ring pressing roller positioning member 227 along the central axis 222 can be adjusted left and right to adapt to coils of different diameters.

[0025] The ring pressing roller 221 can be lifted and pressed down at the same time, and it is also required to be able to rotate. A specific support and transmission structure thereof is shown in FIG. Figure 4As shown, each ring pressing roller 221 is provided with a bearing support rod 224 near both ends, wherein the bearing support rod 224 on one of the ring pressing rollers 221 is connected to the workbench 21, and the bearing support rods 224 on the other two ring pressing rollers 221 are connected to a ring pressing roller lifting plate 225, and the ring pressing roller lifting plate 225 is parallel to the ring pressing roller 221, and a ring pressing cylinder 226 is provided on the workbench 21 vertically facing the ring pressing roller 221, and the ring pressing roller lifting plate 225 is connected to the movable end of the ring pressing cylinder 226, and when the ring pressing cylinder 226 is actuated, the two ring pressing rollers 221 are driven to approach or lift up the other ring pressing roller 221 through the ring pressing roller lifting plate 225.

[0026] In a preferred embodiment, the shearing and bending mechanism 24 also includes a transverse plate 242 parallel to the pressure ring roller 221, a shearing cylinder 243 facing the central axis 222 is provided on the workbench 21, the transverse plate 242 is driven by the shearing cylinder 243 to reciprocate toward the central axis 222, two mounting blocks 244 are provided on the transverse plate 242, the shearing and bending knife 241 is connected to the mounting blocks 244, and the positions of the mounting blocks 244 and the shearing and bending knife 241 along the length direction of the transverse plate 242 are adjustable. This structure can adapt the distance between the shearing and bending knives 241 to books of different sizes, and when the shearing cylinder 243 drives the transverse plate 242 to reciprocate toward the central axis 222, the shearing and bending knife 241 is driven by the transverse plate 242 to complete the shearing and bending action.

[0027] To sum up, the utility model is a plastic single coil synchronous forming and binding equipment, which solves the problems in the prior art that coil forming and binding require separate equipment to be carried out separately, low processing efficiency, and large waste of materials. It has high utilization value and use significance and can be widely promoted and applied.

[0028] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A plastic single coil synchronous forming and binding device, comprising a coil forming device (1) and a book binding device (2), characterized in that: The coil forming device (1) is arranged at the front end, and comprises a workbench (11), on which a wire feeding mechanism (12), a heating mechanism (13) and a coil shaping mechanism (14) are arranged; the wire feeding mechanism (12) comprises a wire roller (121) which can rotate along the axial direction; the heating mechanism (13) comprises a heating inner core (131) which can rotate along the axial direction, the surface of the heating inner core (131) is provided with a spiral groove, the outer part of the heating inner core (131) is provided with a shell (132), and the shell is provided with a wire inlet (14). 33) and an outlet guide (134), the wire inlet (133) facing the wire roller (121); the coil shaping mechanism (14) comprises a winding shaft (141) and three wire pressing rollers (142) parallel to each other in a horizontal direction, the wire pressing rollers (142) are distributed around the winding shaft (141) in a herringbone shape and are circumscribed to the circumference of the winding shaft (141), each of the wire pressing rollers (142) can rotate synchronously in the same direction, and the outlet of the outlet guide (134) is located at the front end of the winding shaft (141); The bookbinding device (2) is arranged at the rear end, and comprises a second workbench (21). The second workbench (21) is provided with a ring pressing and looping mechanism (22), a book pressing mechanism (23) and a shearing and bending mechanism (24); the ring pressing and looping mechanism (22) comprises three ring pressing rollers (221) which are parallel to each other and flush at both ends and are arranged in a herringbone shape. Two of the ring pressing rollers (221) can be lifted or pressed down for reciprocating motion. When the three ring pressing rollers (221) are close to each other, a line connecting the centers of the tangent circles of the circumferential surfaces of the ring pressing rollers (221) is defined as a central axis (222). The central axis (222) is coaxially arranged with the winding shaft (141). The pressing ring rollers (221) can rotate synchronously in the same direction; the pressing mechanism (23) includes a pressing base plate (231) whose lower end is parallel to the central axis (222), a pressing plate (232) is provided parallel to the pressing base plate (231), and a pressing cylinder (233) is provided vertically toward the pressing base plate (231), and the pressing plate (232) is driven by the pressing cylinder (233) to press downward toward the pressing base plate (231); the shearing and bending mechanism (24) includes a pair of shearing and bending knives (241), and the working position of the blade part of the shearing and bending knife (241) is located in the area between each of the pressing ring rollers (221).

2. A plastic single coil synchronous forming and binding device as claimed in claim 1, characterized in that: A pair of winding rollers (122) parallel to each other are provided between the wire roller (121) and the wire inlet (133); a plurality of annular winding grooves (123) are evenly distributed along the length direction on the surface of the winding roller (122); and the distance between the two winding rollers (122) is adjustable.

3. A plastic single coil synchronous forming and binding device as claimed in claim 1, characterized in that: The surface of the crimping roller (142) is provided with a plurality of annular wire grooves (143) equidistantly distributed along the length direction, and the annular wire grooves (143) on adjacent crimping rollers (142) are staggered in sequence by one third of the spacing.

4. A plastic single coil synchronous forming and binding device as claimed in claim 1, characterized in that: The workbench 1 (11) is provided with a first servo motor (15), and the heating inner core (131) is driven to rotate by the first servo motor (15).

5. A plastic single coil synchronous forming and binding device as claimed in claim 4, characterized in that: The front end of each crimping roller (142) is provided with a synchronous pulley (144), and the first servo motor (15) drives the crimping roller (142) and the heating inner core (131) to rotate synchronously through a synchronous belt and gear transmission.

6. A plastic single coil synchronous forming and binding device as claimed in claim 1, characterized in that: The surface of each of the ring pressing rollers (221) is provided with a plurality of annular wire grooves (223) equidistantly distributed along the length direction, and the annular wire grooves (223) on adjacent ring pressing rollers (221) are staggered one-third of the spacing in sequence.

7. A plastic single coil synchronous forming and binding device as claimed in claim 1, characterized in that: Each of the ring pressing rollers (221) is provided with a bearing support rod (224) near both ends, wherein the bearing support rod (224) on one of the ring pressing rollers (221) is connected to the second workbench (21), and the bearing support rods (224) on the other two ring pressing rollers (221) are connected to a ring pressing roller lifting plate (225), wherein the ring pressing roller lifting plate (225) is parallel to the ring pressing roller (221), and a ring pressing cylinder (226) is provided on the second workbench (21) and is vertically facing the ring pressing roller (221), wherein the ring pressing roller lifting plate (225) is connected to the movable end of the ring pressing cylinder (226), and when the ring pressing cylinder (226) is in motion, the two ring pressing rollers (221) are driven to approach or lift up the other ring pressing roller (221) through the ring pressing roller lifting plate (225).

8. The plastic single coil synchronous forming and binding device as claimed in claim 1, characterized in that: A ring pressing roller positioning member (227) is provided at one end of the central axis (222), and a spiral positioning shaft (228) is provided at the other end. The ring pressing roller positioning member (227) has a conical surface (229) facing inward. Each ring pressing roller (221) is provided with a positioning wheel (2211) and a synchronous pulley (2212) at one end close to the ring pressing roller positioning member (227). When each ring pressing roller (221) approaches each other, the positioning wheel (2211) abuts against the conical surface (229). A servo motor (25) is provided on the workbench (21). The servo motor (25) drives each ring pressing roller (221) to rotate synchronously in the same direction through a synchronous belt.

9. The plastic single coil synchronous forming and binding device as claimed in claim 1, characterized in that: The shearing and bending mechanism (24) comprises a transverse plate (242) parallel to the pressure ring roller (221); a shearing cylinder (243) facing the central axis (222) is provided on the workbench (21); the transverse plate (242) is driven by the shearing cylinder (243) to reciprocate toward the central axis (222); two mounting blocks (244) are provided on the transverse plate (242); the shearing and bending knife (241) is connected to the mounting blocks (244); and the mounting blocks (244) and the shearing and bending knife (241) are adjustable in position along the length direction of the transverse plate (242).

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