Automatic bending extrusion forming device for side edges of bottle caps

Abstract

The utility model provides an automatic bottle cap side edge bending extrusion forming device which comprises a rotating base, a movably-connected rotating disc is arranged at the top of the rotating base, and a heating assembly, a side edge forming assembly and a cooling assembly which surround the rotating disc are arranged at the top of the rotating base. The heating assembly, the side edge forming assembly and the cooling assembly are sequentially arranged in the feeding direction, and a plurality of discharging grooves which are distributed in a rotating and symmetrical mode are formed in the edge position of the surface of the rotating disc, the rotating disc is driven by the driving motor to rotate, and automatic operation of the heating assembly, the side edge forming assembly and the cooling assembly is combined. Full-automatic production of bottle cap side edge bending extrusion forming is achieved, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle cap processing equipment, in particular to an automatic bending and extrusion molding device for bottle cap sides. Background Art

[0002] With the rapid development of industries like beverages and alcohol, bottle caps, as a crucial component of packaging, are experiencing a growing demand. To improve production efficiency, reduce costs, and ensure product quality, the bottle cap manufacturing industry is increasingly adopting automated and intelligent production equipment. Bending and extruding the side of the bottle cap is a crucial step in the manufacturing process. This process forms a curled edge, enhancing its structural strength and making it more resistant to external pressure and impact. It also creates a smoother, more aesthetically pleasing appearance, enhancing the overall product image. Traditional production methods often require manual operation, resulting in low production efficiency, high labor costs, and inconsistent product quality.

[0003] Based on the above situation, in the prior art, the patent application number CN202322404368.1 discloses a cover body rolling processing device, including a fixed seat and a rolling component and a material receiving component connected to the fixed seat. The rolling component is composed of a rolling punch and a cylinder arranged on the fixed seat. The cylinder is fixedly connected to the fixed seat. A rolling punch is provided under the cylinder. The cylinder and the rolling punch are fixedly connected. A material receiving component is provided under the rolling punch. The material receiver is provided with a receiving tray. A groove is provided on the surface of the receiving tray. A negative pressure hole is provided at the bottom of the groove. A discharging assembly is provided on one side of the receiving tray and a feeding assembly is provided on the other side. The utility model cooperates with each other among the rolling component, the feeding assembly and the discharging assembly, so that the equipment can stably and continuously perform the loading, rolling and unloading operations of the cover body, thereby improving the efficiency of the cover body rolling processing.

[0004] The above-mentioned cap body rolling processing device is a device for bending and extruding the side of the bottle cap. Its main purpose is to form a curling edge on the side of the bottle cap to improve the structural strength and appearance of the bottle cap. However, when processing bottle caps with relatively hard materials or insufficient toughness, the curling process of the bottle cap side is prone to problems such as curling edge cracking. Or bottle caps with insufficient toughness or hard materials have poor plastic deformation ability. When subjected to external forces, stress concentration inside the material may cause cracks to be generated and extended. During the curling process, the side of the bottle cap needs to be bent and extruded. If the material is too hard or insufficiently tough, the deformation of the curling edge may exceed the yield limit of the material, thereby causing cracking. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the present invention proposes an automatic bending and extrusion molding device for the side of a bottle cap. In order to further solve the above technical problems and meet actual needs, the specific technical solutions are as follows:

[0006] A device for automatically bending and extruding the sides of bottle caps comprises a rotating base, a rotating disk movably connected to the top of the rotating base, a heating component, a side forming component and a cooling component surrounding the rotating disk are arranged on the top of the rotating base, the heating component, the side forming component and the cooling component are arranged in sequence along the feeding direction, a plurality of discharge troughs in rotationally symmetrical distribution are provided at the edge of the surface of the rotating disk, the heating component is provided with a heating cover directly above the discharge trough, the side forming component is provided with a forming punch, a retractable ejector rod is provided inside the forming punch, the forming punch is arranged directly above the discharge trough, the cooling component is provided with a cooling cover directly above the discharge trough, a fixed column is provided inside the cooling cover, and a retractable anti-column is provided inside the fixed column.

[0007] Furthermore, the rotating base is provided with a mounting cavity, and the rotating disk is provided with a mounting base connected to the rotating base at the bottom of the mounting cavity. The rotating disk and the mounting base are provided with a drive shaft, one end of the drive shaft is rotatably installed inside the mounting base, and the other end of the drive shaft is connected to the center position of the lower surface of the rotating disk. One side of the drive shaft is provided with a drive motor installed on the inner wall of the bottom of the rotating base, and the power output shaft of the drive motor is installed with a second gear, and the drive shaft is provided with a first gear that can engage with the second gear.

[0008] Furthermore, the heating assembly also includes a first fixed frame and a first electric cylinder, the first fixed frame is installed on the upper surface of the rotating base, the first electric cylinder is installed on the top of the first fixed frame, the telescopic rod end of the first electric cylinder passes through the top of the first fixed frame and is connected to the heating cover, a heating ring groove is provided inside the heating cover, and a plurality of heating wires are arranged equidistantly inside the side wall of the heating ring groove.

[0009] Furthermore, the side forming assembly also includes a second fixing frame and a second electric cylinder, the second fixing frame is installed on the upper surface of the rotating base, the second electric cylinder is installed on the top of the second fixing frame, the upper end of the forming punch is connected to the punch seat, the telescopic rod end of the second electric cylinder passes through the top of the second fixing frame and is connected to the punch seat, the lower end of the forming punch is provided with an extrusion head, and the forming punch is provided with an annular bending guide groove at the connection with the extrusion head, and the longitudinal section of the bending guide groove is semicircular.

[0010] Furthermore, a sliding cavity is provided inside the forming punch, a retaining ring is provided at the bottom of the sliding cavity, a limiting clamp is provided at the upper end of the push rod in the sliding cavity, and the other end of the push rod vertically passes through the forming punch and the extrusion head and is placed below the extrusion head. The limiting clamp can slide in the sliding cavity through the retaining ring, and a first spring is provided inside the sliding cavity, and the upper and lower ends of the first spring respectively resist the limiting clamp and the top inner wall of the sliding cavity.

[0011] Furthermore, the cooling assembly also includes a third fixed frame and a third electric cylinder, the third fixed frame is installed on the upper surface of the rotating base, the third electric cylinder is installed on the top of the third fixed frame, the telescopic rod end of the third electric cylinder passes through the top of the third fixed frame and is connected to the cooling cover, the lower end side wall of the cooling cover is provided with a plurality of air outlet holes, the top inner wall of the cooling cover is connected with a fixed column, a telescopic cavity is provided inside the fixed column, the upper end of the support column is provided with a sliding clamp in the telescopic cavity, the sliding clamp can cooperate with the telescopic cavity to perform limited sliding, the lower end of the support column is placed directly below the fixed column, the telescopic cavity is provided with a second spring, and the two ends of the second spring are respectively against the top inner wall of the telescopic cavity and the sliding clamp.

[0012] Furthermore, a ring-shaped cooling air delivery pipe surrounding a fixed column is installed on the top inner wall of the cooling cover, and an air jet hole is provided on the surface of the cooling air delivery pipe. The cooling air delivery pipe is connected to an air inlet pipe, and the air outlet end of the air inlet pipe is connected to the cooling air delivery pipe. The air proximal end of the air inlet pipe passes through the top of the cooling cover and is connected to an external cooling air source.

[0013] The beneficial effects of the utility model are:

[0014] The utility model drives the rotating disk to rotate by a driving motor, combines the automatic operation of the heating component, the side forming component and the cooling component, realizes the fully automated production of the bending and extrusion molding of the bottle cap side, effectively improves the production efficiency, the heating component evenly heats the metal cover body through the electric heating wire, improves its plasticity and toughness, and is beneficial to the subsequent molding operation, the side forming component realizes the bending and extrusion molding of the metal cover side through the molding punch and the retractable ejector rod, and ensures the stability of the product quality, and the cooling component quickly and evenly cools the formed metal cover body through the cooling hood and the cooling air delivery pipe, which is beneficial to maintain the stability of its shape and improve the hardness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the rotating base of the present invention.

[0017] Figure 3This is a schematic diagram of the internal structure of the heating cover of the present invention.

[0018] Figure 4 This is a schematic diagram of the internal structure of the side forming component of the present invention.

[0019] Figure 5 This is a schematic diagram of the internal structure of the cooling cover of the present invention.

[0020] Figure numerals: rotating base 1, rotating disk 11, driving shaft 12, first gear 13, second gear 14, driving motor 15, mounting base 16, discharge trough 17, mounting cavity 18, heating assembly 2, heating cover 21, heating ring groove 22, heating wire 23, first electric cylinder 24, first fixed frame 25, side forming assembly 3, second fixed frame 30, punch seat 31, forming punch 32, limiting clamp 33, ejector rod 34, extrusion head 35, bending guide groove 36, sliding cavity 37, retaining ring 371, first spring 38, second electric cylinder 39, cooling assembly 4, cooling cover 41, air outlet 411, cooling gas delivery pipe 42, jet hole 421, air inlet pipe 43, fixed column 44, telescopic cavity 441, support column 45, sliding clamp 451, second spring 46, third electric cylinder 47, third fixed frame 48. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention in conjunction with the accompanying drawings and relevant embodiments. The implementation of the present invention is not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0022] like Figures 1 to 5 As shown, the utility model provides a technical solution, an automatic bending and extrusion molding device for the side of a bottle cap, comprising a rotating base 1, a rotating disk 11 movably connected is provided on the top of the rotating base 1, a heating component 2, a side molding component 3 and a cooling component 4 surrounding the rotating disk 11 are provided on the top of the rotating base 1, the heating component 2, the side molding component 3 and the cooling component 4 are arranged in sequence along the feeding direction, a plurality of rotationally symmetrically distributed discharge troughs 17 are provided at the edge position of the surface of the rotating disk 11, the heating component 2 is provided with a heating cover 21 directly above the discharge trough 17, the side molding component 3 is provided with a molding punch 32, a retractable ejector rod 34 is provided inside the molding punch 32, the molding punch 32 is arranged directly above the discharge trough 17, the cooling component 4 is provided with a cooling cover 41 directly above the discharge trough 17, a fixed column 44 is provided inside the cooling cover 41, and a retractable anti-column 45 is provided inside the fixed column 44.

[0023] When the utility model processes the bottle cap, the bottle cap material is placed in the discharge trough 17 of the rotating disk 11. As the rotating disk 11 rotates, it passes through the heating component 2, the side forming component 3 and the cooling component 4 in sequence. In the heating component 2, the electric heating wire 23 preheats the bottle cap material to improve its plasticity and toughness. In the side forming component 3, the forming punch 32 and the ejector rod 34 cooperate to bend and extrude the bottle cap material. The bending guide groove 36 ensures that the shape of the side of the bottle cap after forming is consistent. In the cooling component 4, the cooling gas delivery pipe 42 sprays cooling gas to quickly cool the formed bottle cap material to maintain its shape stability.

[0024] As one of the preferred embodiments of the present invention, Figure 1 and Figure 2 As shown, the rotating base 1 is provided with a mounting cavity 18, and the rotating disk 11 is provided with a mounting base 16 connected to the rotating base 1 at the bottom of the mounting cavity 18. The rotating disk 11 and the mounting base 16 are provided with a drive shaft 12, one end of the drive shaft 12 is rotatably mounted inside the mounting base 16, and the other end of the drive shaft 12 is connected to the center position of the lower surface of the rotating disk 11. One side of the drive shaft 12 is provided with a drive motor 15 installed on the inner wall of the bottom of the rotating base 1, and the power output shaft of the drive motor 15 is installed with a second gear 14, and the drive shaft 12 is provided with a first gear 13 that can engage with the second gear 14.

[0025] The top of the rotating base 1 is movably connected to the rotating disk 11. The edge of the surface of the rotating disk 11 is provided with a number of rotationally symmetrically distributed discharge troughs 17 for placing the bottle cap material to be processed. Through the cooperation of the rotating base 1 and the rotating disk 11, continuous and automated processing of the bottle cap material is achieved. When the entire device needs to be started, the drive motor 15 starts working. Its power output shaft drives the second gear 14 to rotate. Since the second gear 14 is engaged with the first gear 13, when the second gear 14 rotates, it will drive the first gear 13 and the drive shaft 12 connected thereto to rotate. The rotation of the drive shaft 12 then drives the rotating disk 11 to rotate. Since the edge of the surface of the rotating disk 11 is provided with a number of rotationally symmetrically distributed discharge troughs 17, as the rotating disk 11 rotates, the bottle cap material in the discharge troughs 17 will pass through the heating component 2, the side forming component 3 and the cooling component 4 in sequence, completing the entire processing flow.

[0026] As one of the preferred embodiments of the present invention, Figure 1 and Figure 3As shown, the heating assembly 2 also includes a first fixing frame 25 and a first electric cylinder 24. The first fixing frame 25 is installed on the upper surface of the rotating base 1, and the first electric cylinder 24 is installed on the top of the first fixing frame 25. The telescopic rod end of the first electric cylinder 24 passes through the top of the first fixing frame 25 and is connected to the heating cover 21. A heating ring groove 22 is provided inside the heating cover 21, and a plurality of heating wires 23 are arranged equidistantly inside the side wall of the heating ring groove 22.

[0027] The heating assembly 2 achieves rapid and uniform heating of the bottle cap material through the rapid heating of the heating wire 23 and the lifting and lowering movement of the heating cover 21. In the initial state of the bottle cap side automatic bending and extrusion molding device, the heating cover 21 is in a raised state and maintains a certain distance from the discharge trough 17 on the rotating disk 11. When the rotating disk 11 rotates the bottle cap in the discharge trough 17 to the bottom of the heating assembly 2 and the bottle cap in the discharge trough 17 needs to be heated, the telescopic rod of the first electric cylinder 24 extends downward, driving the heating cover 21 to descend. During the descending process, the heating cover 21 gradually covers the entire bottle cap. At this time, the side of the bottle cap is placed in the heating ring groove 22. When the heating cover 21 completely covers the bottle cap, the heating wire 23 starts to be energized and heated. The heat generated by the heating wire 23 is transferred to the bottle cap material through the heating ring groove 22, thereby heating the bottle cap. When heating is completed, the telescopic rod of the first electric cylinder 24 is retracted upward, driving the heating cover 21 to rise and leave the bottle cap material. At this time, the bottle cap material has completed the heating process and is ready to enter the next processing stage.

[0028] As one of the preferred embodiments of the present invention, Figure 1 and Figure 4 As shown, the side forming assembly 3 also includes a second fixing frame 30 and a second electric cylinder 39. The second fixing frame 30 is installed on the upper surface of the rotating base 1, and the second electric cylinder 39 is installed on the top of the second fixing frame 30. The upper end of the forming punch 32 is connected to the punch seat 31. The telescopic rod end of the second electric cylinder 39 passes through the top of the second fixing frame 30 and is connected to the punch seat 31. The lower end of the forming punch 32 is provided with an extrusion head 35. The forming punch 32 is provided with an annular bending guide groove 36 at the connection with the extrusion head 35, and the longitudinal section of the bending guide groove 36 is semicircular.

[0029] Furthermore, in the structure of the present invention, a sliding cavity 37 is provided inside the forming punch 32, a retaining ring 371 is provided at the bottom of the sliding cavity 37, and a limiting clamp 33 is provided at the upper end of the push rod 34 in the sliding cavity 37. The other end of the push rod 34 vertically passes through the forming punch 32 and the extrusion head 35 and is placed below the extrusion head 35. The limiting clamp 33 can slide in a limited position in the sliding cavity 37 through the retaining ring 371, and a first spring 38 is provided inside the sliding cavity 37. The upper and lower ends of the first spring 38 respectively resist the limiting clamp 33 and the top inner wall of the sliding cavity 37.

[0030] The forming punch 32 is connected to the punch seat 31, and an extrusion head 35 is provided at its lower end for stamping the side of the bottle cap. A sliding cavity 37 is provided inside the forming punch 32 for mounting and supporting the ejector pin 34. The extrusion head 35 is provided at the lower end of the forming punch 32 and is in direct contact with the bottle cap material. A bending guide groove 36 is provided at the connection between the forming punch 32 and the extrusion head 35, and its longitudinal section is semicircular, for guiding the side of the bottle cap to bend according to a predetermined shape during the stamping process, thereby forming a curling edge on the side of the bottle cap. The ejector pin 34 vertically passes through the forming punch 32 and the extrusion head 35 and is placed below the extrusion head 35 to provide additional support during the stamping process and to fix the bottle cap in advance to prevent the bottle cap from moving during the descent of the extrusion head 35. The first spring 38 cooperates with the ejector pin 34 to form a buffer during the extrusion molding process to prevent the curling edge of the bottle cap from breaking due to excessive stamping speed.

[0031] When the rotary disk 11 rotates to the bottom of the side forming assembly 3 and the bottle cap material in the discharge trough 17 needs to be stamped and formed, the telescopic rod of the second electric cylinder 39 extends downward, driving the forming punch 32, the extrusion head 35 and the push rod 34 to move downward. When the push rod 34 contacts the bottom of the bottle cap, the second electric cylinder 39 continues to apply downward pressure, causing the extrusion head 35 to stamp the side of the bottle cap. During the stamping process, the bending guide groove 36 guides the side of the bottle cap to bend according to a predetermined shape, thereby forming a curled edge. At the same time, the push rod 34 moves upward in the sliding cavity 37. As the stamping proceeds, the first spring 38 is gradually compressed. When the stamping reaches a predetermined depth, the side edge of the bottle cap is stamped into the required curling shape. At this time, the telescopic rod of the second electric cylinder 39 begins to retract upward, driving the forming punch 32 and the extrusion head 35 to move upward. The extrusion head 35 rises and gradually separates from the bottle cap, and the bottle cap side edge forming process is completed. During this process, the first spring 38 gradually returns to its original state, and through the limit clamp 33, it pushes the push rod 34 to always press against the bottle cap, keeping the bottle cap in the discharge chute 17, thereby preventing the extrusion head 35 from being withdrawn, and driving the bottle cap to separate from the discharge chute 17.

[0032] As one of the preferred embodiments of the present invention, Figure 1 and Figure 4As shown, the cooling assembly 4 also includes a third fixing bracket 48 and a third electric cylinder 47. The third fixing bracket 48 is installed on the upper surface of the rotating base 1, and the third electric cylinder 47 is installed on the top of the third fixing bracket 48. The telescopic rod end of the third electric cylinder 47 passes through the top of the third fixing bracket 48 and is connected to the cooling cover 41. The lower end side wall of the cooling cover 41 is provided with a plurality of air outlet holes 411. The top inner wall of the cooling cover 41 is connected with a fixing column 44. A telescopic cavity 441 is provided inside the fixing column 44. The upper end of the resisting column 45 is provided with a sliding clamp 451 in the telescopic cavity 441. The sliding clamp 451 can cooperate with the telescopic cavity 441 to perform limited sliding. The lower end of the resisting column 45 is placed directly below the fixing column 44. The telescopic cavity 441 is provided with a second spring 46. The two ends of the second spring 46 are respectively against the top inner wall of the telescopic cavity 441 and the sliding clamp 451.

[0033] Furthermore, in the structure of the present invention, a ring-shaped cooling air delivery pipe 42 surrounding a fixed column 44 is installed on the top inner wall of the cooling cover 41, and an injection hole 421 is provided on the surface of the cooling air delivery pipe 42. The cooling air delivery pipe 42 is connected to an air inlet pipe 43, and the air outlet end of the air inlet pipe 43 is connected to the cooling air delivery pipe 42. The air proximal end of the air inlet pipe 43 passes through the top of the cooling cover 41 and is connected to an external cooling air source.

[0034] The cooling assembly 4 is used to cool the bottle caps after heating and side forming. The third electric cylinder 47 is installed on the top of the third fixed frame 48. The third electric cylinder 47 can control the lifting and lowering of the cooling cover 41 to adapt to bottle caps of different heights or adjust the distance between the cooling cover 41 and the bottle caps. The air outlet 411 on the lower side wall of the cooling cover 41 is used to exhaust air outward, and the cooling air delivery pipe 42 sprays cooling air through the air jet hole 421. The column 45 moves upward when it contacts the bottom of the bottle cap and compresses the second spring 46. The column 45 presses the bottle cap tightly into the discharge trough 17 through the elastic force of the second spring 46, thereby preventing the bottle cap from being blown away from the discharge trough 17 by the air flow during the jet cooling process.

[0035] The cooling air delivery pipe 42 surrounds the fixed column 44 and is installed on the top inner wall of the cooling cover 41. The surface of the cooling air delivery pipe 42 is connected to the external cooling air source through the air inlet pipe 43, receives the cooling gas and delivers it to the air injection hole 421. Then, the cooling gas is evenly sprayed onto the bottle cap through the air injection hole 421 and the air outlet hole 411 at the lower end of the cooling cover 41, so as to quickly cool the bottle cap. The sprayed cooling air is discharged outward through the air outlet hole 411 on the side wall of the lower end of the cooling cover 41, and at the same time takes away the heat on the bottle cap. After the cooling process is completed, the telescopic rod of the third electric cylinder 47 rises, driving the cooling cover 41 to rise and leave the discharge chute 17. At this time, the support column 45 is reset under the elastic force of the second spring 46, thereby completing the cooling of the bottle cap.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An automatic bending and extrusion molding device for the side of a bottle cap, comprising a rotating base (1), characterized in that: The top of the rotating base (1) is provided with a rotating disk (11) with a movable connection. The top of the rotating base (1) is provided with a heating component (2), a side forming component (3) and a cooling component (4) surrounding the rotating disk (11). The heating component (2), the side forming component (3) and the cooling component (4) are arranged in sequence along the feeding direction. The edge position of the surface of the rotating disk (11) is provided with a plurality of material discharge troughs (17) distributed in rotational symmetry. The heating component (2) is provided with a heating cover (21) directly above the material discharge trough (17). The side forming component (3) is provided with a forming punch (32). A retractable ejector rod (34) is provided inside the forming punch (32). The forming punch (32) is provided directly above the material discharge trough (17). The cooling component (4) is provided with a cooling cover (41) directly above the material discharge trough (17). A fixed column (44) is provided inside the cooling cover (41). A retractable support column (45) is provided inside the fixed column (44).

2. The automatic bending and extrusion molding device for bottle cap sides according to claim 1, characterized in that: The rotating base (1) is provided with a mounting cavity (18), the rotating disk (11) is provided with a mounting base (16) connected to the rotating base (1) at the bottom of the mounting cavity (18), the rotating disk (11) and the mounting base (16) are provided with a driving shaft (12), one end of the driving shaft (12) is rotatably mounted inside the mounting base (16), the other end of the driving shaft (12) is connected to the center position of the lower surface of the rotating disk (11), one side of the driving shaft (12) is provided with a driving motor (15) mounted on the inner wall of the bottom of the rotating base (1), the power output shaft of the driving motor (15) is provided with a second gear (14), and the driving shaft (12) is provided with a first gear (13) that can mesh with the second gear (14).

3. The automatic bending and extrusion molding device for bottle cap sides according to claim 1, characterized in that: The heating assembly (2) further comprises a first fixing frame (25) and a first electric cylinder (24), wherein the first fixing frame (25) is mounted on the upper surface of the rotating base (1), and the first electric cylinder (24) is mounted on the top of the first fixing frame (25), and the telescopic rod end of the first electric cylinder (24) passes through the top of the first fixing frame (25) and is connected to the heating cover (21), wherein a heating ring groove (22) is provided inside the heating cover (21), and a plurality of heating wires (23) arranged at equal intervals are provided inside the side wall of the heating ring groove (22).

4. The automatic bending and extrusion molding device for bottle cap sides according to claim 1, characterized in that: The side forming assembly (3) further comprises a second fixing frame (30) and a second electric cylinder (39), wherein the second fixing frame (30) is mounted on the upper surface of the rotating base (1), and the second electric cylinder (39) is mounted on the top of the second fixing frame (30). The upper end of the forming punch (32) is connected to the punch seat (31), and the telescopic rod end of the second electric cylinder (39) passes through the top of the second fixing frame (30) and is connected to the punch seat (31). The lower end of the forming punch (32) is provided with an extrusion head (35), and the forming punch (32) is provided with an annular bending guide groove (36) at the connection with the extrusion head (35), and the longitudinal section of the bending guide groove (36) is semicircular.

5. The automatic bending and extrusion molding device for bottle cap sides according to claim 4, characterized in that: A sliding cavity (37) is provided inside the forming punch (32), and a retaining ring (371) is provided at the bottom of the sliding cavity (37). A limiting clamp (33) is provided at the upper end of the push rod (34) in the sliding cavity (37). The other end of the push rod (34) vertically passes through the forming punch (32) and the extrusion head (35) and is placed below the extrusion head (35). The limiting clamp (33) can slide within the sliding cavity (37) through the retaining ring (371). A first spring (38) is provided inside the sliding cavity (37), and the upper and lower ends of the first spring (38) respectively abut against the limiting clamp (33) and the top inner wall of the sliding cavity (37).

6. The automatic bending and extrusion molding device for bottle cap sides according to claim 1, characterized in that: The cooling assembly (4) further includes a third fixing frame (48) and a third electric cylinder (47), wherein the third fixing frame (48) is mounted on the upper surface of the rotating base (1), and the third electric cylinder (47) is mounted on the top of the third fixing frame (48). The telescopic rod end of the third electric cylinder (47) passes through the top of the third fixing frame (48) and is connected to the cooling cover (41). The side wall of the lower end of the cooling cover (41) is provided with a plurality of air outlet holes (411), and the inner wall of the top of the cooling cover (41) is connected to a fixing column (44). A telescopic cavity (441) is provided inside the fixed column (44), and a sliding clamp (451) is provided at the upper end of the supporting column (45) in the telescopic cavity (441). The sliding clamp (451) can cooperate with the telescopic cavity (441) to perform limited sliding. The lower end of the supporting column (45) is placed directly below the fixed column (44), and the telescopic cavity (441) is provided with a second spring (46). The two ends of the second spring (46) are respectively against the top inner wall of the telescopic cavity (441) and the sliding clamp (451).

7. The automatic bending and extrusion molding device for bottle cap sides according to claim 6, characterized in that: The top inner wall of the cooling cover (41) is provided with an annular cooling air delivery pipe (42) surrounding a fixed column (44), and the surface of the cooling air delivery pipe (42) is provided with an injection hole (421). The cooling air delivery pipe (42) is connected to an air inlet pipe (43), and the air outlet end of the air inlet pipe (43) is communicated with the cooling air delivery pipe (42), and the air-proximal end of the air inlet pipe (43) passes through the top of the cooling cover (41) and is communicated with an external cooling air source.

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