A stamping device for a multi-channel high-speed production line of easy-open lids

Abstract

This invention discloses a stamping device for a multi-channel high-speed production line of easy-open lids, relating to the technical field of easy-open lid production equipment. The invention includes a stamping machine, with a feeding line on the right side and a discharging line on the left side. A driving punch is installed inside the stamping machine, with multiple sets of punches at its top and bottom. A lower die and an upper die are fixedly installed inside the stamping machine. A lower feeding line is sleeved on the outside of the lower die, and an upper feeding line is sleeved on the outside of the upper die. Both the lower and upper feeding lines consist of multiple conveyor belts, each with several easy-open lid clamping holes inside. This invention utilizes the driving force of the driving punch's up-and-down stamping to drive the pull-tab stamping assembly. The pull-tab stamping assembly, through a guided and surrounding mechanism, can quickly achieve pull-tab punching and double-sided folding, resulting in a compact structure and high-quality double-sided folding production of the pull-tab.

Description

Technical Field

[0001] This invention relates to the field of easy-open lid production equipment technology, specifically to a stamping device for a multi-channel high-speed production line of easy-open lids. Background Technology

[0002] As a core component in the food and beverage packaging industry, the production efficiency and product quality of easy-open lids directly affect the overall level and cost control of the packaging industry.

[0003] Chinese patent (publication number: CN112139383A) discloses a stamping device for a multi-channel high-speed production line for easy-open lids, including a Geneva wheel structure, a stamping structure, and a feeding structure. The Geneva wheel structure is mounted on a platform and rotated by a rotating structure on the platform. The stamping structure is connected to the Geneva wheel structure via a connector, and the rotation of the Geneva wheel structure drives the stamping structure to reciprocate. Multiple stamping structures are connected by a driven gear structure. The feeding structure contains a rack structure that meshes with the Geneva wheel structure, and the rotation of the Geneva wheel structure completes intermittent motion.

[0004] The patent and existing technologies have the following technical problems in practical use:

[0005] 1. Both the aforementioned application and existing easy-open can lid production lines utilize a reciprocating motion of a stamping structure to perform high-speed stamping on a lower mold. This is single-sided stamping, and each stamping stroke in single-sided stamping can only produce one set of easy-open can lids. To increase production capacity, the only method is to continuously increase the stamping frequency. Currently, mainstream equipment reaches speeds of 2,000-2,500 strokes per minute or even higher, approaching physical limits. This method of increasing production capacity through a single dimension is no longer sustainable. Furthermore, in single-sided stamping, the enormous downward impact force of the slider is guided through the machine body to the foundation, generating significant vibration and unbalanced torque, affecting stamping accuracy.

[0006] 2. Currently, in high-speed production lines, the pull ring on easy-open lids is usually a single-sided folded edge. The rivet points formed by the single-sided folded edge do not have sufficient metal structure wrapping and interlocking. At the same time, when consumers use improper force or open at an undesirable angle, the pull ring is prone to twisting or even falling off, instead of being lifted smoothly in the designed direction, making it difficult to open. Summary of the Invention

[0007] The purpose of this invention is to solve the above problems by providing a stamping device for a multi-channel high-speed production line for easy-open lids.

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0009] A high-speed, multi-channel production line stamping device for easy-open lids includes a stamping machine. A feeding line is located on the right side of the stamping machine, and a discharging line is located on the left side of the stamping machine. A driving punch is installed inside the stamping machine, which can move up and down at high speed. Multiple sets of punches are provided at the top and bottom of the driving punch. A lower mold and an upper mold are fixedly installed inside the stamping machine. The driving punch is located between the lower mold and the upper mold. A lower feeding line is sleeved on the outside of the lower mold, and an upper feeding line is sleeved on the outside of the upper mold. Both the lower and upper feeding lines are composed of multiple conveyor belts, and each conveyor belt has several easy-open lid clamping holes inside.

[0010] The front and back of the stamping machine are equipped with pull ring stamping assemblies. The pull ring stamping assemblies use the up and down movement of the driving punch to fold the pull ring on both sides. The material strip in the pull ring stamping assemblies on both sides is crisscrossed with the lower feeding line and the upper feeding line, respectively.

[0011] Furthermore, the inner diameter of the easy-open cover clamping hole in the lower feeding line is the same as the outer diameter of the easy-open cover. The upper feeding line includes a tripod plate fixedly installed on the outside of the stamping machine. Two sets of drive rollers are rotatably installed on both sides of the tripod plate. The four sets of drive rollers are connected by multiple conveyor belts. Two sets of guide rollers are rotatably installed inside the tripod plate. The conveyor belt passes through the lower surface of the guide rollers. The easy-open cover clamping hole in the upper feeding line is composed of an easy-open cover die hole and an elastic bottom support ring. The inner diameter of the easy-open cover die hole is the same as the outer diameter of the easy-open cover. The inner diameter of the elastic bottom support ring is smaller than the outer diameter of the easy-open cover. The thickness of the elastic bottom support ring is smaller than the thickness of the easy-open cover. Multiple sets of pusher cylinders are fixedly installed inside the tripod plate. The pusher cylinders are correspondingly arranged with the conveyor belts. The pusher cylinders can penetrate the easy-open cover die hole. The pusher cylinders are located on the left side of the stamping machine. The thickness of the conveyor belt in the upper feeding line is greater than the thickness of the easy-open cover. The thickness of the conveyor belt in the lower feeding line is the same as the thickness of the easy-open cover.

[0012] Furthermore, the top of the easy-open cover mold hole is provided with an expansion opening, the maximum inner diameter of which is larger than the outer diameter of the easy-open cover.

[0013] Furthermore, the feeding line includes a frame one fixedly installed on the right side of the stamping machine. Inside the frame one, from right to left, are installed multiple sets of feeding pipes, multiple sets of lifting magnetic conveyor lines, multiple sets of unloading pipe one, and multiple sets of unloading pipe two. The outlet of unloading pipe one is perpendicular to the conveyor belt of the lower feeding line, and the outlet of unloading pipe two is perpendicular to the vertical part of the conveyor belt of the upper feeding line. A bucket is provided at the inlet of unloading pipe one and the inlet of unloading pipe two. The bucket is semi-circular. Multiple sets of flexible flip-cover rollers are rotatably installed between the bucket and the lifting magnetic conveyor line. The number of flexible flip-cover rollers is the same as that of the lifting magnetic conveyor line. The outer surface of the flexible flip-cover roller is V-shaped. A pressure roller is rotatably installed on the right side of the tripod plate. The pressure roller is located below the outlet of unloading pipe two. The pressure roller can press the easy-open cover into the easy-open cover die hole.

[0014] Furthermore, the feeding line includes a frame two fixedly installed on the left side of the stamping machine. Inside the frame two, a normal conveyor line, a magnetic conveyor line one, and a magnetic conveyor line two are fixedly installed. The normal conveyor line and the magnetic conveyor line one are both located to the right of the magnetic conveyor line two. The normal conveyor line is located above the magnetic conveyor line one, and the magnetic conveyor line one is located above the magnetic conveyor line two. The magnetic conveyor line one is located directly above the lower feeding line, and the normal conveyor line is located directly below the upper feeding line. A guide hopper is obliquely downward at the outlet of the normal conveyor line.

[0015] Furthermore, the inner walls of both the front and back sides of the press are provided with two sets of guide sliding holes. The front and back sides of the drive punch are provided with two sets of sliding pillars, which pass through the guide sliding holes. A drive plate is fixedly installed on the outer side of the front sliding pillar, and a transmission plate is fixedly installed on the outer side of the back sliding pillar. A drive motor is fixedly installed on the front side of the press. A crank wheel is installed at the output end of the drive motor. A crank rod is hinged to the side of the crank wheel near the press. The crank rod is hinged to the drive plate.

[0016] Furthermore, the pull ring stamping assembly includes a connecting frame fixedly mounted on the stamping machine. A first die and a second die are fixedly mounted on the side of the connecting frame near the drive punch. The second die is located above the first die. The upper surface of the first die has multiple sets of upper folding die cavities, the upper surface of the second die has multiple sets of blanking die cavities, and the lower surface of the second die has multiple sets of lower folding die cavities. The number of upper folding die cavities, blanking die cavities, and lower folding die cavities is the same as the number of conveyor belts. A second pull ring material roller is rotatably mounted on the end of the second die near the stamping machine. A first pull ring material roller is rotatably mounted between the first die and the second die. The pull ring material strip is tightly attached to the upper surface of the second die, then reversed by the second pull ring material roller to tightly attach to the lower surface of the second die, and then reversed by the first pull ring material roller to tightly attach to the upper surface of the first die.

[0017] It also includes a driven stamping plate. The driven stamping plate on the front pull ring stamping assembly is fixedly mounted on the drive plate, and the driven stamping plate on the back pull ring stamping assembly is fixedly mounted on the transmission plate. The driven stamping plate is provided with an upper stamping plate and a lower stamping plate on the side near the connecting frame. The upper stamping plate is located above the second die, and the lower stamping plate is located between the first die and the second die.

[0018] Furthermore, the press is internally fixedly equipped with two sets of partition guide plates. The lower partition guide plate is located between the lower feeding line and the driving punch, and the upper partition guide plate is located between the upper feeding line and the driving punch. Multiple sets of guide holes are opened through the interior of the partition guide plates. The punch is inserted into the guide holes and will not detach from the guide holes when the punch is pressing up and down.

[0019] Furthermore, a visual inspection hole is provided inside the partition guide plate described below. The visual inspection hole is located on the left side of the stamping machine, and a visual inspection component is provided on the top of the visual inspection hole.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. This invention utilizes multiple conveyor belts in both the lower and upper feeding lines, enabling double-sided, multi-channel operation. In a single stroke, both sides work simultaneously, producing two sets of caps. While maintaining the same stamping frequency, production efficiency is effectively improved, overcoming the limitations of traditional single-sided stamping which relies on infinitely increasing speed to boost production. Furthermore, the buffering force provided during upper and lower easy-open cap stamping largely cancels out the inertial forces generated within the machine, resulting in high machine stability and improved stamping accuracy. The design of easy-open cap clamping holes solves the problem of conflict between the easy-open cap hanging stamping and the punch, allowing the equipment to perform high-speed, stable, and continuous stamping with high production efficiency.

[0022] 2. This invention utilizes the driving force of the upper and lower punch blocks to drive the pull ring stamping assembly. The pull ring stamping assembly can quickly realize the punching and double-sided folding of the pull ring through the guide and surround method. It has a compact structure and produces high-quality and efficient double-sided folding of pull rings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the overall structure of the invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the feeding line structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the feeding line structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the stamping machine structure of the present invention. Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the stamping machine structure of the present invention. Figure 2 ;

[0029] Figure 7 This is a schematic diagram of the exploded structure of the stamping machine of the present invention;

[0030] Figure 8 This is a schematic diagram of the upper feeding line structure of the present invention;

[0031] Figure 9 This is a schematic cross-sectional view of the conveyor belt structure in the upper feeding line of the present invention;

[0032] Figure 10 This is a schematic diagram of the pull ring stamping assembly structure of the present invention.

[0033] Reference numerals: 1. Stamping machine; 2. Feeding line; 21. Frame 1; 22. Feeding pipe; 23. Lifting magnetic conveyor line; 24. Discharge pipe 1; 25. Discharge pipe 2; 26. Flexible flip-top roller; 27. Bucket; 3. Discharge line; 31. Frame 2; 32. Ordinary conveyor line; 33. Magnetic conveyor line 1; 34. Magnetic conveyor line 2; 35. Guide hopper; 4. Drive punch; 41. Sliding column; 42. Drive plate; 43. Transmission plate; 44. Drive motor; 45. Crank wheel; 46. Crank rod; 47. Punch; 5. Lower die; 6. 7. Upper mold; 8. Lower feeding line; 9. Upper feeding line; 10. Triangular frame plate; 11. Drive roller; 12. Guide roller; 13. Conveyor belt; 14. Easy-open cover die hole; 15. Elastic bottom support ring; 16. Expansion port; 17. Pressure roller; 18. Push cylinder; 19. Divider guide plate; 10. Vision inspection component; 10. Pull ring stamping component; 11. Connecting frame; 12. First punch; 13. Second punch; 14. Pull ring material roller one; 15. Pull ring material roller two; 16. Driven stamping plate; 17. Upper punch plate; 18. Lower punch plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] Example 1, as Figures 1-10 As shown, a high-speed production line stamping device for easy-open lid multi-channel includes a stamping machine 1, a feeding line 2 is arranged on the right side of the stamping machine 1, a discharging line 3 is arranged on the left side of the stamping machine 1, a driving punch 4 is arranged inside the stamping machine 1, the driving punch 4 can move up and down at high speed, and multiple sets of punches 47 are arranged on the top and bottom of the driving punch 4. A lower mold 5 and an upper mold 6 are fixedly installed inside the stamping machine 1, the driving punch 4 is located between the lower mold 5 and the upper mold 6, a lower feeding line 7 is sleeved on the outside of the lower mold 5, and an upper feeding line 8 is sleeved on the outside of the upper mold 6. Both the lower feeding line 7 and the upper feeding line 8 are composed of multiple conveyor belts 84, and several easy-open lid clamping holes are opened inside the conveyor belts 84.

[0036] The front and back of the stamping machine 1 are equipped with pull ring stamping assemblies 10. The pull ring stamping assembly 10 uses the drive punch 4 to move up and down to fold the pull ring on both sides. The material strip in the pull ring stamping assemblies 10 on both sides is interwoven with the lower feeding line 7 and the upper feeding line 8 respectively.

[0037] The semi-finished easy-open lid enters the stamping machine 1 through the feeding line 2, then enters the mold cavity on the upper surface of the lower mold 5 through the lower feeding line 7, and finally enters the mold cavity on the lower surface of the upper mold 6 through the hanging method of the upper feeding line 8. The mold cavities of the lower mold 5 and the upper mold 6 are conventional easy-open lid stamping mold cavities. Through the conveying of the lower feeding line 7 and the upper feeding line 8, the semi-finished easy-open lid undergoes reinforcing rib forming, riveting forming, engraving, and lettering in sequence. During this process, the pull ring stamping assembly 10 stamps the pull ring from the material strip. The rings are shaped like pull rings and then double-sided folded. The rivet joints are also connected to the material strip. The two sets of pull ring stamping components 10 correspond to the upper mold 6 and the lower mold 5, respectively. The material strip, the lower feeding line 7 and the upper feeding line 8 are crisscrossed. The material strip drives the formed pull rings to move above the riveted easy-open cover. The driving punch 4 rivets the pull rings and easy-open cover together. Then, the pull rings are conveyed to the unloading line 3 through the lower feeding line 7 and the upper feeding line 8. The unloading line 3 conveys the processed easy-open cover to the packaging station.

[0038] Both the lower feeding line 7 and the upper feeding line 8 are composed of multiple conveyor belts 84, forming a double-sided, multi-channel system. In a single stroke, both sides work simultaneously, producing two sets of caps. With the stamping frequency unchanged, production efficiency is directly increased by 100%, overcoming the limitations of traditional single-sided stamping that relies on infinitely increasing speed to increase production. Simultaneously, the buffering force provided during the stamping of the upper and lower easy-open caps largely cancels out the inertial forces generated within the machine, resulting in high machine stability and improved stamping accuracy. Furthermore, the design of the easy-open cap clamping holes solves the problem of conflict between the easy-open cap hanging stamping and the punch 47, enabling the equipment to perform high-speed, stable, and continuous stamping with high production efficiency. The pull ring features double-sided folded edges, resulting in a smoother riveting point, higher sealing reliability, a smooth opening feel, and stable opening force, enhancing the user experience.

[0039] Example 2, based on the above examples, further includes: the inner diameter of the easy-open cover clamping hole in the lower feeding line 7 is the same as the outer diameter of the easy-open cover; the upper feeding line 8 includes a tripod plate 81 fixedly installed on the outside of the stamping machine 1; two sets of drive rollers 82 are rotatably installed on both sides of the tripod plate 81; the four sets of drive rollers 82 are connected by multiple conveyor belts 84; two sets of guide rollers 83 are rotatably installed inside the tripod plate 81; the conveyor belts 84 pass through the lower surface of the guide rollers 83; the easy-open cover clamping hole in the upper feeding line 8 is connected to the easy-open cover die hole 841 and the elastic base. The machine consists of rings 842. The inner diameter of the easy-open cover die hole 841 is the same as the outer diameter of the easy-open cover. The inner diameter of the elastic bottom support ring 842 is smaller than the outer diameter of the easy-open cover, and the thickness of the elastic bottom support ring 842 is smaller than the thickness of the easy-open cover. Multiple sets of pusher cylinders 86 are fixedly installed inside the triangular frame plate 81. The pusher cylinders 86 are correspondingly set with the conveyor belt 84. The pusher cylinders 86 can pass through the easy-open cover die hole 841. The pusher cylinders 86 are located on the left side of the stamping machine 1. The thickness of the conveyor belt 84 in the upper feeding line 8 is greater than the thickness of the easy-open cover, and the thickness of the conveyor belt 84 in the lower feeding line 7 is the same as the thickness of the easy-open cover.

[0040] An expansion opening 843 is provided at the top of the easy-open cover mold hole 841. The maximum inner diameter of the expansion opening 843 is larger than the outer diameter of the easy-open cover. This setting facilitates the easy-open cover to fall back into the easy-open cover mold hole 841.

[0041] This embodiment provides a double-sided feeding structure. The lower feeding line 7 only needs the easy-open cover to smoothly enter the easy-open cover clamping hole to stably transport the easy-open cover without affecting the stamping process. The upper feeding line 8 is more complicated, requiring a hoisting method to avoid affecting the bottom-up stamping. Therefore, through the setting of the elastic bottom support ring 842, during feeding, the easy-open cover is pressed into the easy-open cover die hole 841. The easy-open cover first presses the elastic bottom support ring 842 against the inner wall of the easy-open cover die hole 841. Since the thickness of the elastic bottom support ring 842 is less than the thickness of the easy-open cover, part of the easy-open cover exceeds the elastic bottom support ring 842, and the easy-open cover is stably clamped. When moved to the stamping position, the punch 47 pushes the easy-open cover upwards from the bottom, causing the easy-open cover to disengage from the elastic bottom support ring 842. Then it enters the mold cavity, and the elastic bottom support ring 842 will wrap around the punch 47 under the action of elastic force. After the stamping is completed, the punch 47 descends, and the elastic bottom support ring 842 always wraps around the punch 47. When the punch 47 is separated from the elastic bottom support ring 842, the elastic bottom support ring 842 will recover under the action of elastic force, taking the easy-open cover away from the punch 47, so that the easy-open cover remains in the easy-open cover mold hole 841. And because the upper conveyor belt 84 is relatively thick, the punch 47 has enough space to open the elastic bottom support ring 842, ensuring that the elastic bottom support ring 842 will not be pressed between the punch 47 and the easy-open cover. The stamping is stable, and the hanging conveyor will not interfere with the stamping. It can stably transport the easy-open cover to the designated position and stably complete the double-sided high-speed stamping.

[0042] After the final riveting is completed, the easy-open cover is conveyed to the area directly below the pusher cylinder 86. The telescopic end of the pusher cylinder 86 extends and pushes the easy-open cover out of the easy-open cover mold hole 841, completing the unloading process.

[0043] It should be noted that, due to the large thickness of the upper conveyor belt 84, the upper material belt is located between the upper conveyor belt 84 and the upper mold 6. The rivets of the upper easy-open cover protrude upwards, that is, the upper and lower stamping directions are the same, and the protruding surfaces are all facing upwards, ensuring that the material belt will not affect the upper stamping, and ensuring that the easy-open cover pull rings are all facing upwards when unloading material later, which is convenient for subsequent packaging.

[0044] Example 3, based on the above examples, further includes a feeding line 2 comprising a frame 21 fixedly installed on the right side of the press 1. Inside the frame 21, from right to left, are installed multiple sets of feeding pipes 22, multiple sets of lifting magnetic conveyor lines 23, multiple sets of unloading pipes 24 and 25. The outlet of unloading pipe 24 is perpendicular to the conveyor belt 84 of the lower feeding line 7, and the outlet of unloading pipe 25 is perpendicular to the vertical portion of the conveyor belt 84 of the upper feeding line 8. The feed pipe 24... Both the inlet and the outlet of the second discharge pipe 25 are equipped with buckets 27, which are semi-circular in shape. Multiple sets of flexible flip-cover rollers 26 are rotatably installed between the buckets 27 and the lifting magnetic conveyor line 23. The number of flexible flip-cover rollers 26 is the same as that of the lifting magnetic conveyor line 23. The outer surface of the flexible flip-cover rollers 26 is V-shaped. A pressure roller 85 is rotatably installed on the right side of the tripod plate 81. The pressure roller 85 is located below the outlet of the second discharge pipe 25 and can press the easy-open cover into the easy-open cover die hole 841.

[0045] The semi-finished easy-open lid is vertically conveyed to the lifting magnetic conveyor line 23 via the feeding pipe 22, and then vertically attached to the lifting magnetic conveyor line 23. The lifting magnetic conveyor line 23 then conveys the easy-open lid vertically upwards, and finally to a horizontal state. Under the action of the conveying inertia force, the easy-open lid is inserted into the flexible flip-top roller 26. The flexible flip-top roller 26 rotates and rotates the easy-open lid from horizontal to vertical again. After rotating to vertical, under the action of the bucket 27, the easy-open lid is arranged vertically and enters the first feeding pipe 24 and the second feeding pipe 25. The first feeding pipe 24 directly guides the easy-open lid to the horizontal and guides it from top to bottom into the easy-open lid clamping hole below. The second feeding pipe 25 guides the easy-open lid vertically to the vertical surface of the upper conveyor belt 84, and then it is conveyed by the upper conveyor belt 84 into the position of the pressure roller 85. The pressure roller 85 squeezes the easy-open lid into the easy-open lid die hole 841, thus completing the stable feeding from top to bottom.

[0046] Example 4, based on the above examples, further includes a feeding line 3 comprising a frame 2 31 fixedly installed on the left side of the stamping machine 1. Inside the frame 2 31, a regular conveyor line 32, a magnetic conveyor line 1 33, and a magnetic conveyor line 2 34 are fixedly installed. The regular conveyor line 32 and the magnetic conveyor line 1 33 are both located to the right of the magnetic conveyor line 2 34. The regular conveyor line 32 is located above the magnetic conveyor line 1 33, and the magnetic conveyor line 1 33 is located above the magnetic conveyor line 2 34. The magnetic conveyor line 1 33 is located directly above the lower feeding line 7, and the regular conveyor line 32 is located directly below the upper feeding line 8. A guide hopper 35 is obliquely downwardly arranged at the outlet of the regular conveyor line 32.

[0047] Magnetic conveyor line 1 33 uses magnetic force to attract the riveted easy-open cover to its bottom surface, and then conveys it to the top of magnetic conveyor line 2 34. The magnetic force of magnetic conveyor line 2 34 is greater than that of magnetic conveyor line 1 33, so it attracts the easy-open cover to its upper surface. At the same time, the easy-open cover is pushed down from above and falls onto the ordinary conveyor line 32. Then the easy-open cover is conveyed to the guide hopper 35 and finally slides down onto magnetic conveyor line 2 34, so the feeding is stable.

[0048] Example 5, based on the above examples, further includes two sets of guide sliding holes through the inner walls of the front and back sides of the press 1. Two sets of sliding pillars 41 are provided on the front and back sides of the drive punch 4. The sliding pillars 41 pass through the guide sliding holes. A drive plate 42 is fixedly installed on the outer side of the front sliding pillar 41, and a transmission plate 43 is fixedly installed on the outer side of the back sliding pillar 41. A drive motor 44 is fixedly installed on the front side of the press 1. A crank wheel 45 is installed at the output end of the drive motor 44. A crank rod 46 is hinged to the side of the crank wheel 45 near the press 1. The crank rod 46 is hinged to the drive plate 42.

[0049] By controlling the drive motor 44 to be energized, the drive motor 44 drives the crank wheel 45 to rotate. The crank wheel 45 drives the drive plate 42 to rise and fall through the crank rod 46. The drive plate 42 drives the drive punch 4 to rise and fall through the slide column 41. The use of servo motor control results in higher stamping precision.

[0050] Example 6, based on the above examples, further includes a pull ring stamping assembly 10 comprising a connecting frame 101 fixedly mounted on the stamping machine 1. A first die 102 and a second die 103 are fixedly mounted on the connecting frame 101 near the drive punch 4. The second die 103 is located above the first die 102. The upper surface of the first die 102 has multiple sets of upper folding cavities, the upper surface of the second die 103 has multiple sets of blanking cavities, and the lower surface of the second die 103 has multiple sets of lower folding cavities. The number of edge cavities, upper folding cavities, blanking cavities, and lower folding cavities is the same as the number of conveyor belts 84. A second pull ring material roller 105 is rotatably installed at one end of the second punch 103 near the punching machine 1. A first pull ring material roller 104 is rotatably installed between the first punch 102 and the second punch 103. The pull ring material strip is tightly attached to the upper surface of the second punch 103, and then changes direction after passing through the second pull ring material roller 105 to tightly attach to the lower surface of the second punch 103. Then it changes direction after passing through the first pull ring material roller 104 to tightly attach to the upper surface of the first punch 102.

[0051] It also includes a driven stamping plate 106. The driven stamping plate 106 on the front pull ring stamping assembly 10 is fixedly mounted on the drive plate 42, and the driven stamping plate 106 on the back pull ring stamping assembly 10 is fixedly mounted on the transmission plate 43. The driven stamping plate 106 is provided with an upper stamping plate 107 and a lower stamping plate 108 on the side near the connecting frame 101. The upper stamping plate 107 is located above the second die 103, and the lower stamping plate 108 is located between the first die 102 and the second die 103.

[0052] The strip first passes through the upper surface of the second die 103. The drive plate 42 drives the driven stamping plate 106 to move up and down. The upper stamping plate 107 cooperates with the upper surface of the second die 103 to punch out the shape of the pull ring. Then, under the guidance of the pull ring material roller 105, it moves along the lower surface of the second die 103. The lower stamping plate 108 moves up and cooperates with the lower surface of the second die 103 to complete one side folding. Then, under the guidance of the pull ring material roller 104, it is pressed against the upper surface of the first die 102. The lower stamping plate 108 moves up and cooperates with the upper surface of the first die 102 to complete the other side folding. Thus, the pull ring can be formed quickly in a very small space. Then, the pull ring is carried by the strip to the riveting position. The pull ring is riveted to the rivet protrusion and punched out from the strip. The pull ring forming quality is high.

[0053] Example 7, based on the above examples, further includes two sets of partition guide plates 9 fixedly installed inside the stamping machine 1. The lower partition guide plate 9 is located between the lower feeding line 7 and the driving punch 4, and the upper partition guide plate 9 is located between the upper feeding line 8 and the driving punch 4. Multiple sets of guide holes are opened through the interior of the partition guide plate 9. The punch 47 is inserted into the guide holes and will not detach from the guide holes when the punch 47 is stamping up and down.

[0054] By setting the divider guide plate 9, it is possible to prevent the easy-open cover from being carried away from the conveyor belt 84, and it can always guide the punch 47, making the stamping more stable.

[0055] Example 8, based on the above examples, further includes a visual inspection hole inside the lower partition guide plate 9, the visual inspection hole being located on the left side of the stamping machine 1, and a visual inspection component 91 being provided on the top of the visual inspection hole.

[0056] By setting up the vision inspection component 91, the riveted easy-open cover can be visually inspected to determine the stamping yield rate, which facilitates timely adjustments to the stamping machine 1.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stamping device for a multi-channel high-speed production line for easy-open lids, comprising a stamping machine (1), characterized in that, The press (1) is provided with a feeding line (2) on the right side and a discharging line (3) on the left side. The press (1) is provided with a driving punch (4) inside. The driving punch (4) can move up and down at high speed. The top and bottom of the driving punch (4) are provided with multiple sets of punches (47). The press (1) is fixedly installed with a lower mold (5) and an upper mold (6). The driving punch (4) is located between the lower mold (5) and the upper mold (6). The lower mold (5) is sleeved with a lower feeding line (7) on the outside and the upper mold (6) is sleeved with an upper feeding line (8) on the outside. The lower feeding line (7) and the upper feeding line (8) are both composed of multiple conveyor belts (84). The conveyor belts (84) are provided with several easy-open cover clamping holes. The front and back of the press (1) are provided with pull ring stamping assemblies (10). The pull ring stamping assembly (10) uses the drive punch (4) to move up and down to fold the pull ring on both sides. The material strip in the pull ring stamping assemblies (10) on both sides is intersected with the lower feeding line (7) and the upper feeding line (8). The inner diameter of the easy-open cover clamping hole in the lower feeding line (7) is the same as the outer diameter of the easy-open cover. The upper feeding line (8) includes a tripod plate (81) fixedly installed on the outside of the stamping machine (1). Two sets of drive rollers (82) are rotatably installed on both sides of the tripod plate (81). The four sets of drive rollers (82) are connected by multiple conveyor belts (84). Two sets of guide rollers (83) are rotatably installed inside the tripod plate (81). The conveyor belts (84) pass through the lower surface of the guide rollers (83). The easy-open cover clamping hole in the upper feeding line (8) is composed of an easy-open cover mold hole (841) and an elastic bottom support ring (842). The inner diameter of the pull-out mold hole (841) is the same as the outer diameter of the easy-open cover. The inner diameter of the elastic bottom support ring (842) is smaller than the outer diameter of the easy-open cover. The thickness of the elastic bottom support ring (842) is smaller than the thickness of the easy-open cover. Multiple sets of pusher cylinders (86) are fixedly installed inside the triangular frame plate (81). The pusher cylinders (86) are correspondingly set with the conveyor belt (84). The pusher cylinders (86) can penetrate the easy-open mold hole (841). The pusher cylinders (86) are located on the left side of the stamping machine (1). The thickness of the conveyor belt (84) in the upper feeding line (8) is greater than the thickness of the easy-open cover. The thickness of the conveyor belt (84) in the lower feeding line (7) is the same as the thickness of the easy-open cover.

2. The stamping device for a multi-channel high-speed production line of easy-open lids according to claim 1, characterized in that, The top of the easy-open cover mold hole (841) is provided with an expansion port (843), and the maximum inner diameter of the expansion port (843) is greater than the outer diameter of the easy-open cover.

3. The stamping device for a multi-channel high-speed production line of easy-open lids according to claim 2, characterized in that, The feeding line (2) includes a frame (21) fixedly installed on the right side of the press (1). Inside the frame (21), from right to left, are installed multiple sets of feeding pipes (22), multiple sets of lifting magnetic conveyor lines (23), multiple sets of unloading pipes (24) and multiple sets of unloading pipes (25). The outlet of unloading pipe (24) is perpendicular to the conveyor belt (84) of the lower feeding line (7), and the outlet of unloading pipe (25) is perpendicular to the vertical part of the conveyor belt (84) of the upper feeding line (8). The inlet of unloading pipe (24) and the outlet of unloading pipe (25) are perpendicular to the vertical part of the conveyor belt (84) of the upper feeding line (8). 25) A bucket (27) is provided at the inlet. The bucket (27) is semi-circular. Multiple sets of flexible flip-top rollers (26) are rotatably installed between the bucket (27) and the lifting magnetic conveyor line (23). The number of flexible flip-top rollers (26) is the same as that of the lifting magnetic conveyor line (23). The outer surface of the flexible flip-top roller (26) is V-shaped. A pressure roller (85) is rotatably installed on the right side of the tripod plate (81). The pressure roller (85) is located below the outlet of the discharge pipe two (25). The pressure roller (85) can press the easy-open cover into the easy-open cover mold hole (841).

4. The stamping device for a multi-channel high-speed production line of easy-open lids according to claim 3, characterized in that, The feeding line (3) includes a frame two (31) fixedly installed on the left side of the press (1). Inside the frame two (31), a normal conveyor line (32), a magnetic conveyor line one (33) and a magnetic conveyor line two (34) are fixedly installed. The normal conveyor line (32) and the magnetic conveyor line one (33) are both located to the right of the magnetic conveyor line two (34). The normal conveyor line (32) is located above the magnetic conveyor line one (33). The magnetic conveyor line one (33) is located above the magnetic conveyor line two (34). The magnetic conveyor line one (33) is located directly above the lower feeding line (7). The normal conveyor line (32) is located directly below the upper feeding line (8). A guide hopper (35) is obliquely downward at the outlet of the normal conveyor line (32).

5. The stamping device for a multi-channel high-speed production line of easy-open lids according to claim 4, characterized in that, The inner walls of the front and back sides of the press (1) are provided with two sets of guide sliding holes. The front and back sides of the drive punch (4) are provided with two sets of sliding columns (41). The sliding columns (41) pass through the guide sliding holes. The outer side of the front sliding column (41) is fixedly installed with a drive plate (42). The outer side of the back sliding column (41) is fixedly installed with a transmission plate (43). The front side of the press (1) is fixedly installed with a drive motor (44). The output end of the drive motor (44) is equipped with a crank wheel (45). The side of the crank wheel (45) close to the press (1) is hinged with a crank rod (46). The crank rod (46) is hinged to the drive plate (42).

6. The stamping device for a multi-channel high-speed production line of easy-open lids according to claim 5, characterized in that, The pull ring stamping assembly (10) includes a connecting frame (101) fixedly mounted on the stamping machine (1). A first die (102) and a second die (103) are fixedly mounted on the side of the connecting frame (101) near the drive punch (4). The second die (103) is located above the first die (102). The upper surface of the first die (102) has multiple sets of upper folding die cavities. The upper surface of the second die (103) has multiple sets of blanking die cavities. The lower surface of the second die (103) has multiple sets of lower folding die cavities. The number of blanking die cavities and lower folding die cavities is the same as the number of conveyor belts (84). The second die (103) is rotatably mounted with a pull ring material roller two (105) at one end near the press (1). The first die (102) and the second die (103) are rotatably mounted with a pull ring material roller one (104). The pull ring material strip is tightly attached to the upper surface of the second die (103), and then passes through the pull ring material roller two (105) to change direction and tightly attach to the lower surface of the second die (103). Then, it passes through the pull ring material roller one (104) to change direction and tightly attach to the upper surface of the first die (102). It also includes a driven stamping plate (106). The driven stamping plate (106) on the front pull ring stamping assembly (10) is fixedly mounted on the drive plate (42), and the driven stamping plate (106) on the back pull ring stamping assembly (10) is fixedly mounted on the transmission plate (43). The driven stamping plate (106) has an upper stamping plate (107) and a lower stamping plate (108) on the side near the connecting frame (101). The upper stamping plate (107) is located above the second die (103), and the lower stamping plate (108) is located between the first die (102) and the second die (103).

7. The stamping device for a multi-channel high-speed production line of easy-open lids according to claim 6, characterized in that, The press (1) has two sets of partition guide plates (9) fixedly installed inside. The lower partition guide plate (9) is located between the lower feeding line (7) and the driving punch (4), and the upper partition guide plate (9) is located between the upper feeding line (8) and the driving punch (4). The partition guide plate (9) has multiple sets of guide holes through it. The punch (47) is inserted into the guide holes and will not come out of the guide holes when the punch (47) is pressing up and down.

8. The stamping device for a multi-channel high-speed production line of easy-open lids according to claim 7, characterized in that, The partition guide plate (9) described below has a visual inspection hole inside. The visual inspection hole is located on the left side of the stamping machine (1), and a visual inspection component (91) is provided on the top of the visual inspection hole.

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