Riveting device with replaceable tool bit and punch component of riveting device

Abstract

The utility model provides a riveting device with a replaceable tool bit and a punch component of the riveting device, and relates to the technical field of zip-top can cover stamping dies. Wherein such a punch member comprises a punch body and a replaceable tool bit engaged to the punch body. The punch body is provided with a first punch hole for the riveting punch to move up and down. The replaceable tool bit is provided with a second punch hole corresponding to the first punch hole. A cutter part is arranged on the side, away from the pull ring, of the replaceable cutter head. The cutter part protrudes from the body of the replaceable cutter head in the cutting direction. A first side wall is arranged on the side, away from the pull ring, of the punch body. The replaceable tool bit is provided with a second side wall corresponding to the first side wall. And the first side wall is not higher than the second side wall. And due to the design of the replaceable tool bit, the maintenance cost of the easy-to-open cover stamping die is remarkably reduced. The tool bit can be quickly replaced when being abraded or damaged, and the whole punch body does not need to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of punching dies for can lids, in particular to a riveting device with a replaceable cutter head and a punch component thereof. Background Art

[0002] Currently, in the field of easy-open lid stamping dies, a riveting punch is usually used to cut the pull ring and rivet it to the lid body when manufacturing easy-open can lids. Most existing riveting punches adopt an integrated design, that is, the blade is directly connected to the punch body and cannot be replaced separately.

[0003] This design has many drawbacks. When the blade becomes blunt, worn, or chipped due to long-term use, the entire punch body must be replaced. Due to the high price of the punch body, replacing the entire punch body for minor damage will undoubtedly significantly increase the maintenance cost of the mold and reduce production efficiency.

[0004] Furthermore, this non-replaceable blade design is not flexible enough in actual production, making it impossible to optimize and adjust the blade in a timely manner, which is not conducive to improving product quality. In view of these shortcomings of the existing technology, a new riveting punch design that can solve the above problems is urgently needed to reduce costs, improve efficiency and enhance product quality. Utility Model Content

[0005] The utility model provides a riveting device with a replaceable cutter head and a punch component thereof, aiming to improve at least one of the above technical problems.

[0006] To solve the above technical problems, the present invention provides a punch component comprising a punch body and a replaceable cutting head coupled to the punch body. The punch body is provided with a first punch hole for the vertical movement of a riveting punch. The replaceable cutting head is provided with a second punch hole corresponding to the first punch hole.

[0007] A cutter portion is provided on a side of the replaceable cutter head away from the pull ring. The cutter portion protrudes from the body of the replaceable cutter head along a cutting direction.

[0008] The punch body is provided with a first side wall on a side away from the pull ring. The replaceable cutter head is provided with a second side wall corresponding to the first side wall. The first side wall is not higher than the second side wall.

[0009] In an optional embodiment, the punch body is provided with a tool tip slot on one side of the first punch hole, and the replaceable tool tip is engaged with the tool tip slot. Preferably, the replaceable tool tip is joined to the punch body via cold welding. The replaceable tool tip is made of tungsten steel. The punch body is made of tool steel.

[0010] In an alternative embodiment, the height difference A between the first sidewall and the second sidewall is 0.1mm to 0.5mm. The first sidewall and the second sidewall are connected by a third sidewall. The included angle B between the third sidewall and the second sidewall is 1 to 4 degrees. Preferably, the height difference A is 0.2mm±0.05mm. The included angle B is 2 degrees.

[0011] In an alternative embodiment, the height C of the cutter portion is 0.3 to 1mm. Preferably, the height C is 0.48mm±0.03mm.

[0012] In an alternative embodiment, the diameter D of the first punch hole is 5.5 to 7mm. Preferably, the diameter D is 5.852mm±0.005mm.

[0013] In an alternative embodiment, the included angle V between the lower surface of the cutter portion and the second sidewall is 45 degrees to 85 degrees. Preferably, the included angle V is 80 degrees.

[0014] In an alternative embodiment, the height H of the second sidewall is 1mm to 5mm. Preferably, the height H is 2mm.

[0015] The present application further provides a riveting device for replaceable bit, which comprises a pull ring conveying assembly, a cutting and stamping assembly, and a fixing assembly.

[0016] The pull ring conveying assembly is used to convey a pull ring material belt. The riveting hole of the pull ring is connected to the material belt on one side to form the pull ring material belt. Preferably, the pull ring conveying assembly is provided with a cutting channel for the cutting and stamping assembly to move up and down.

[0017] The cutting and stamping assembly comprises the punch member of any one of the first aspect. The punch body of the punch member is further provided with a positioning groove. The cutting and stamping assembly further comprises a pull ring positioning member engaged with the positioning groove and a stamping head engaged with the punch hole. The pull ring positioning member is configured to position and adsorb the pull ring from the side of the pull ring away from the riveting hole. The cutter portion of the punch member is configured to cut the pull ring from the material belt.

[0018] The fixing assembly is configured to fix the lid of the pull ring can.

[0019] By adopting the above technical solutions, the present application can achieve the following technical effects:

[0020] This utility model features a punch component with an innovative, replaceable tip design, significantly reducing maintenance costs for easy-open lid stamping dies. Because the tip is made of high-hardness tungsten steel and cold-welded to the punch body, it can be quickly replaced when worn or damaged, eliminating the need to replace the entire punch body. This design not only reduces downtime associated with component replacement but also improves production efficiency.

[0021] Furthermore, the optimized blade material and structural design improve cutting efficiency, ensuring stability and cutting quality during the riveting process, thereby guaranteeing the product quality of the can lid. This improvement not only reduces resource waste but also brings dual economic and operational advantages to manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the specific embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a half-section view of the riveting device.

[0024] Figure 2 It is a half-section view of the punch component.

[0025] Figure 3 It is a bottom view of the punch component.

[0026] Figure 4 It is a bottom view of the positioning groove of the punch component.

[0027] Figure 5 yes Figure 2 Magnified view of the middle Z.

[0028] Markings in the figure: 1-pull ring conveying assembly, 2-pull ring positioning member, 3-fixing assembly, 4-riveting punch, 5-punch body, 6-positioning groove, 7-replaceable cutter head, 8-negative pressure channel, 9-positioning flange, 10-first punch hole, 11-first side wall, 12-second side wall, 13-cutting part, 14-second punch hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Example 1: Figure 1 、 Figure 2 and Figure 5 As shown, an embodiment of the present invention provides a punch component, which includes a punch body 5 and a replaceable tool head 7 coupled to the punch body 5. The punch body 5 is provided with a first punch hole 10 for the riveting punch 4 to move up and down. The replaceable tool head 7 is provided with a second punch hole 14 corresponding to the first punch hole 10.

[0031] The side of the replaceable cutter head 7 away from the pull ring is provided with a cutter portion 13. The cutter portion 13 protrudes from the body of the replaceable cutter head 7 along the cutting direction.

[0032] The punch body 5 is provided with a first side wall 11 on a side away from the pull ring. The replaceable cutter head 7 is provided with a second side wall 12 corresponding to the first side wall 11. The first side wall 11 is not higher than the second side wall 12.

[0033] This utility model significantly reduces maintenance costs for easy-open lid stamping dies through the innovative design of a replaceable blade (7). The optimized blade material and structural design improve cutting efficiency, ensure stability and cutting quality during the riveting process, and thus guarantee the product quality of easy-open lids. This improvement not only reduces resource waste but also brings both economic and operational advantages to manufacturers.

[0034] In an alternative embodiment of the present invention, based on the above embodiment, the punch body 5 is provided with a tool tip groove on one side of the first punch hole 10, and the replaceable tool tip 7 is engaged with the tool tip groove. Preferably, the replaceable tool tip 7 is joined to the punch body 5 by cold welding. The replaceable tool tip 7 is made of tungsten steel. The punch body 5 is made of tool steel.

[0035] Specifically, the replaceable cutter head 7 is made of cemented carbide, and the main body of the riveted punch 4 is generally made of DC53 tool steel. The main body of the riveted punch 4 is provided with a notch for inserting the cutter head below the first punch hole 10. The replaceable cutter head 7 is inserted into the notch and welded to the main body of the riveted punch 4 by cold welding technology. Because the cutter head is made of high-hardness tungsten steel material and is combined with the punch body by cold welding technology, the cutter head can be quickly replaced when worn or damaged, without having to replace the entire punch body. This design not only reduces the downtime caused by replacing parts, but also improves production efficiency.

[0036] Based on the above embodiment, in an optional embodiment of the present invention, the height difference A between the first side wall 11 and the second side wall 12 is 0.1 mm to 0.5 mm. The first side wall 11 and the second side wall 12 are connected by a third side wall. The angle B between the third side wall and the second side wall 12 is 1 to 4 degrees. Preferably, the height difference A is 0.2 mm ± 0.05 mm. The angle B is 2 degrees.

[0037] Specifically, setting a height difference between the first side wall 11 and the second side wall 12 can reduce resistance when the punch member moves up and down, improve work efficiency, and avoid precision degradation caused by side wear of the punch body 5.

[0038] Based on the above embodiment, in an optional embodiment of the present invention, the height C of the protrusion of the cutter portion 13 is 0.3 to 1 mm. The diameter D of the first punch hole 10 is 5.5 to 7 mm. The angle V between the lower surface of at least part of the cutter portion 13 and the second side wall 12 is 45 degrees to 85 degrees. The height H of the second side wall 12 is 1 mm to 5 mm. Preferably, the height C is 0.48 mm ± 0.03 mm. The diameter D is 5.852 mm ± 0.005 mm. The angle V is 80 degrees. The height H is 2 mm.

[0039] Specifically, the cutter portion 13 is constructed as an acute angle structure, which can more efficiently cut the pull ring from the material strip. Setting the angle to 80 degrees can reduce the blunting speed of the cutter head and extend the service life of the cutter head.

[0040] The punch member of the embodiment of the present invention has the following beneficial effects. 1. Reduce maintenance costs: The replaceable blade design of the present invention allows that when the blade is worn or damaged, only the punch member needs to be repaired and replaced with a new blade, without replacing the punch member as a whole. The high cost of replacing the entire punch member due to minor damage is avoided, significantly reducing the maintenance cost of the mold. 2. Shorten the maintenance cycle: Since the blade is replaceable, when maintenance is required, the punch member only needs to be sent out for inlaying of a new blade, rather than waiting for the production and replacement of the entire punch member. This process greatly shortens the maintenance cycle, reduces the downtime of the production line, and thus improves production efficiency. 3. Optimize cutting efficiency and product quality: The replaceable blade of the present invention adopts tungsten steel material with high hardness and wear resistance, so that the pull ring can be cut more stably and efficiently during the riveting process, reducing the problem of reduced cutting quality due to blade wear.

[0041] Example 2: Figures 1 to 5 As shown, the present application further provides a riveting device with a replaceable cutter head 7 , which includes a pull ring conveying component 1 , a cutting and punching component and a fixing component 3 .

[0042] The pull ring conveying assembly 1 is used to convey the pull ring material strip. Among them, one side of the rivet hole of the pull ring is connected to the material strip to form the pull ring material strip. Preferably, the pull ring conveying assembly 1 is provided with a cutting channel for the cutting and punching assembly to move up and down.

[0043] The cutting and punching assembly includes the punch member described in any of the sections of Example 1. The punch body 5 of the punch member is further provided with a positioning groove 6. The punching assembly further includes a pull ring positioning member 2 engaged with the positioning groove 6 and a punch head engaged with the punch hole. The pull ring positioning member 2 is configured to locate and absorb the pull ring from a side away from the rivet hole. The cutter portion 13 of the punch member is configured to sever the pull ring from the material strip.

[0044] The fixing assembly 3 is configured to fix the lid of a can.

[0045] In this embodiment, the punch body 5 is provided with a positioning flange 9, a negative pressure channel 8, and a positioning groove 6. A riveting sleeve and a riveting punch 4 are installed in the first punch hole 10 and the second punch hole 14. The finger hole positioning die (i.e., the pull ring positioning member 2) is screwed to the positioning groove 6. The positioning flange 9 and the finger hole positioning die work together to position the pull ring; the negative pressure channel 8 provides negative pressure to firmly secure the pull ring to the cutting and punching assembly; the riveting sleeve and the riveting punch 4 are installed in the first punch hole 10 and the second punch hole 14, and are used to complete the riveting action together with the lower die of the fixing assembly 3 when the pull ring is riveted to the cover body.

[0046] The working principle of the riveting device is described in detail below: when the pull ring on the pull ring material strip is located on the cutting channel of the pull ring conveying assembly 1, the cutting and punching assembly moves downward, and the replaceable cutter head 7 cuts the pull ring from the material strip when passing through the cutting channel; at the same time, the negative pressure channel 8 of the cutting and punching assembly forms a negative pressure to adsorb the pull ring to the bottom of the punch body 5 and is positioned by the pull ring positioning component 2 and the positioning flange 9; then the cutting and punching assembly continues to move downward until the cutting and punching assembly and the fixing assembly 3 abut, the riveting sleeve is subjected to pressure and moves upward relative to the punch body 5, and the riveting punch 4 continues to move downward, riveting the pull ring to the can lid, completing the riveting action; then, the cutting and punching assembly moves upward and disengages from the pull ring, and moves to the initial position to complete a riveting process.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A punch component, characterized in that: The punch component comprises a punch body (5) and a replaceable cutter head (7) coupled to the punch body (5); the punch body (5) is provided with a first punch hole (10) for the riveting punch (4) to move up and down; the replaceable cutter head (7) is provided with a second punch hole (14) corresponding to the first punch hole (10); A cutting portion (13) is provided on a side of the replaceable cutter head (7) away from the pull ring; the cutting portion (13) protrudes from the body of the replaceable cutter head (7) along the cutting direction; The punch body (5) is provided with a first side wall (11) on a side away from the pull ring; the replaceable cutter head (7) is provided with a second side wall (12) corresponding to the first side wall (11); the first side wall (11) is not higher than the second side wall (12).

2. A punch component according to claim 1, characterized in that: The punch body (5) is provided with a tool head groove on one side of the first punch hole (10), and the replaceable tool head (7) is engaged with the tool head groove.

3. A punch component according to claim 1, characterized in that: A height difference A between the first side wall (11) and the second side wall (12) is 0.1 mm to 0.5 mm; the first side wall (11) and the second side wall (12) are connected via a third side wall.

4. A punch component according to claim 3, characterized in that: An included angle B between the third side wall and the second side wall (12) is 1 to 4 degrees; The height C of the protrusion of the cutting portion (13) is 0.3 to 1 mm; The diameter D of the first punch hole (10) is 5.5 to 7 mm.

5. A punch component according to claim 4, characterized in that: The height difference A is 0.2 mm ± 0.05 mm; The angle B is 2 degrees; The height C is 0.48 mm ± 0.03 mm; The diameter D is 5.852 mm ± 0.005 mm.

6. The punch component according to claim 1, characterized in that: An included angle V between at least a portion of the lower surface of the cutting portion (13) and the second side wall (12) is 45 degrees to 85 degrees; The height H of the second side wall (12) is 1 mm to 5 mm.

7. A punch component according to claim 6, characterized in that: The angle V is 80 degrees; the height H is 2 mm.

8. A punch component according to any one of claims 1 to 7, characterized in that: The replaceable cutter head (7) is joined to the punch body (5) by cold welding technology; the material of the replaceable cutter head (7) is tungsten steel; the material of the punch body (5) is tool steel.

9. A riveting device with a replaceable cutter head (7), characterized in that: It comprises a ring-pulling conveying component (1), a cutting and punching component and a fixing component (3); The pull ring conveying assembly (1) is used to convey the pull ring material strip; wherein one side of the riveting hole of the pull ring is connected to the material strip to form the pull ring material strip; The cutting and punching assembly comprises the punch component according to any one of claims 1 to 8; the punch body (5) of the punch component is further provided with a positioning groove (6); the punching assembly further comprises a pull ring positioning component (2) engaged with the positioning groove (6) and a punch head engaged with the punch hole; the pull ring positioning component (2) is configured to be suitable for positioning and adsorbing the pull ring from a side of the pull ring away from the rivet hole; the cutting portion (13) of the punch component is configured to be suitable for cutting the pull ring from the material strip; The fixing assembly (3) is configured to be suitable for fixing the lid of an easy-open can.

10. A riveting device for a replaceable cutter head (7) according to claim 9, characterized in that: The ring-pulling conveying assembly (1) is provided with a cutting channel for the cutting and punching assembly to move up and down.

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