A continuous feed punch

Abstract

The present application relates to the technical field of stamping die, in particular to a continuous feeding stamping die, which comprises an upper die assembly, a lower die assembly and a guide column assembly installed at the top of the lower die assembly, and the punch on the upper die assembly is slidably installed on the outer wall of the guide column assembly. Two symmetrical material guiding assemblies are arranged on the lower die assembly, the material guiding assembly has a containing gap for placing a material belt, a cleaning mechanism is arranged on one side of the material guiding assembly close to the containing gap, and the cleaning mechanism can slide along the longitudinal direction of the material guiding assembly. By arranging the material guiding assembly to move downward relative to the lower die seat, while the material belt moves upward with the stamping head, the cleaning mechanism drives the clamping boss on the material guiding assembly to contact the lower die seat, and the clamping boss drives the clamping boss to regularly clean the side wall of the lower die seat and the material guiding plate under the drive of the driving member, thereby ensuring the quality of continuous discharge.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and in particular to a stamping die capable of continuous feeding. Background Technology

[0002] Stamping dies are core process equipment for the mass production of metal sheets and profiles. Utilizing a press, they perform plastic and separation processes such as blanking, bending, forming, and punching of sheet metal. With advantages such as high processing efficiency, good product consistency, and suitability for automated mass production, they are widely used in precision machining fields such as automotive parts, 3C electronics, hardware products, and new energy components. Among them, continuous feeding stamping dies, through continuous strip feeding and multi-station synchronous step-by-step processing, can achieve uninterrupted automated stamping forming of workpieces, significantly shortening processing cycles and reducing manual intervention costs, making them the mainstream equipment for current mass precision stamping production.

[0003] In existing technologies, continuously feeding stamping dies mainly consist of a feeding mechanism, an upper die, a lower die, and a blanking and unloading assembly. During operation, the upper die moves up and down along four guide pillars at the top, continuously conveying the metal strip to the die processing station via an automated feeding device. This, combined with the reciprocating stamping action of the press, enables continuous mass production of workpieces. However, during long-term continuous stamping operations, the forming station, cutting edge gap, blanking surface, positioning groove, and other structural surfaces of the die are prone to retaining impurities such as raw material debris, metal dust, sheet metal oxide scale, and small waste materials. The reason for this is that trace amounts of metal debris are generated during sheet metal stamping. Simultaneously, the oxide layer and oil impurities on the sheet metal surface are detached under pressure and friction, adhering and accumulating on the side walls of the guide plate and the top end face of the lower die, resulting in low-quality subsequent strip forming. Summary of the Invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a stamping die with continuous feeding capability, which solves the technical problem that a small amount of metal debris is generated during the stamping process of sheet metal in the continuous feeding process, and the oxide layer and oil stains on the surface of the sheet metal are removed under the action of extrusion and friction and adhere to and accumulate in the die processing area, resulting in low subsequent forming quality.

[0005] To achieve the above objectives, the main technical solutions adopted by the present invention include: This invention provides a continuously feeding stamping die, including an upper die assembly, a lower die assembly, and a guide post assembly mounted on the top of the lower die assembly, wherein the punch on the upper die assembly can be slidably mounted on the outer wall of the guide post assembly; The lower die assembly is provided with two symmetrically arranged material guiding assemblies. The material guiding assemblies have a receiving gap for placing the material strip. A cleaning mechanism is provided on the side of the material guiding assembly near the receiving gap. The cleaning mechanism can slide along the longitudinal direction of the material guiding assembly.

[0006] Optionally, the material guiding assembly includes two oppositely arranged material guiding plates, both of which are disposed on the lower mold assembly. The two material guiding plates are capable of rising and falling relative to the lower mold assembly to retract or protrude from the lower mold assembly. The opposite sides of the material guiding plates are provided with snap-fit ​​bosses, which are capable of sliding along the longitudinal direction of the material guiding assembly to form the cleaning mechanism. The two snap-fit ​​bosses form the receiving gap with the material guiding plates and the lower mold assembly. The sidewall of the material guiding plate corresponding to the snap-fit ​​boss is provided with a sliding groove along the longitudinal direction of the material strip, and the sliding groove is used for the sliding of the snap-fit ​​boss.

[0007] Optionally, the cleaning mechanism includes two driving members capable of driving the locking boss to slide, and the two driving members are disposed in the groove of the guide plate.

[0008] Optionally, the driving component includes a drive motor, a lead screw, and a lead screw nut; The drive motor is installed at one end of the slide groove, and the output end of the drive motor is connected to the lead screw. The lead screw nut is threaded to the outer wall of the lead screw, and the lead screw nut is connected to the locking boss. The lead screw nut can drive the locking boss to slide along the axial direction of the lead screw.

[0009] Optionally, a scraper is provided at the bottom of the snap-fit ​​boss.

[0010] Optionally, the scraper is inclined in the same direction as the feed direction of the material belt, and the engaging boss is located at the outlet of the guide plate.

[0011] Optionally, the inlet end of the guide plate is provided with an inclined guide section, the inclined guide section having a cleaning chamber connected to the waste collection chamber, the cleaning chamber having a downwardly inclined opening, and the inlet of the cleaning chamber being the movement endpoint of the snap-fit ​​boss.

[0012] Optionally, the upper mold assembly includes an upper mold base, an upper mold pad, an upper mold clamping plate, a stripper back plate, and a stripper plate; The bottom end face of the upper mold base is fixedly installed with guide post sleeves that cooperate with the guide posts of the guide post assembly at the four corners. The bottom end face of the upper mold base is fixedly installed with the upper mold pad, the upper mold clamping plate and the stripper back plate in sequence. The stripper plate is slidably installed on the upper mold base through the inner guide post.

[0013] Optionally, the lower mold assembly includes a lower mold base and a lower mold plate; The guide post assembly includes four vertically arranged guide posts. The guide posts are arranged at the four corners of the bottom end face of the lower mold base. The lower template is fixedly installed on the bottom end face of the lower mold base. The material guiding assembly is arranged on the lower template.

[0014] Optionally, the lower template is further provided with a waste collection chamber.

[0015] The beneficial effects of this invention are as follows: This invention provides a continuously feeding stamping die. By configuring the material guide assembly to move downwards relative to the lower die holder, as the strip moves upwards with the stamping head, a cleaning mechanism drives the engaging boss on the material guide assembly to contact the lower die holder. Driven by a driving component, the engaging boss periodically cleans the sidewalls of the lower die holder and the material guide plate, ensuring the quality of continuous output. This solves the technical problem that during continuous feeding, trace amounts of metal debris are generated during sheet metal stamping, and the oxide layer and oil impurities on the sheet metal surface are detached under pressure and friction, accumulating in the die processing area and resulting in low subsequent forming quality. Attached Figure Description

[0016] Figure 1 This is a front perspective three-dimensional structural diagram of the continuously feeding stamping die of the present invention; Figure 2 This is a cross-sectional view of the lower die holder and the material guiding assembly of the continuously feeding stamping die of the present invention. Figure 3 for Figure 2 A magnified view showing the details of the circled "A"; Figure 4 This is a schematic diagram showing the connection between the snap-fit ​​boss and the scraper. Figure 5 A top view of the lower die base and guide assembly of the continuously feeding stamping die of the present invention (excluding the discharge belt); Figure 6 for Figure 5 A schematic diagram of the longitudinal section of the inclined guide section.

[0017] Explanation of reference numerals in the attached figures 1. Upper mold assembly; 11. Upper mold base; 12. Upper mold pad; 13. Upper mold clamping plate; 14. Stripper back plate; 15. Stripper plate; 16. Guide post sleeve; 2. Lower mold assembly; 21. Lower mold base; 22. Lower mold plate; 3. Guide post assembly; 31. Guide post; 4. Material guide assembly; 41. Guide plate; 411. Slide groove; 42. Snap-fit ​​boss; 421. Scraper; 422. Insertion pin; 423. Spline; 43. Inclined material guide section; 431. Cleaning chamber; 432. Opening; 5. Cleaning mechanism; 51. Drive component; 512. Lead screw; 513. Lead screw nut; 100. Material strip; 200. Accommodation gap. Detailed Implementation

[0018] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] See Figures 1-5 As shown, the present invention provides a continuously feeding stamping die, including an upper die assembly 1, a lower die assembly 2, and a guide post assembly 3 installed on the top of the lower die assembly 2. The punch on the upper die assembly 1 can be slidably installed on the outer wall of the guide post assembly 3 to stamp the strip 100 on the guide plate 41 of the lower die assembly 2.

[0020] The lower die assembly 2 is provided with two symmetrically arranged guide assemblies 4. The guide assemblies 4 have a receiving gap 200 for placing the strip 100. A cleaning mechanism 5 is provided on the side of the guide assemblies 4 near the receiving gap 200. The cleaning mechanism 5 can slide along the longitudinal direction of the guide assemblies 4. A stamping die with continuous feeding is provided by setting the guide assemblies 4 to move downward relative to the lower die base 22. As the strip 100 moves upward with the stamping head, the cleaning mechanism 5 drives the locking boss 42 on the guide assemblies 4 to contact the lower die base. Driven by the driving component, the locking boss 42 periodically cleans the sidewalls of the lower die base 22 and the guide plate 41 to ensure the quality of continuous output.

[0021] Furthermore, the material guiding assembly 4 includes two oppositely arranged material guiding plates 41, both of which are disposed on the lower mold assembly 2. The two material guiding plates 41 can be raised and lowered relative to the lower mold assembly 2 to retract or protrude from the lower mold assembly 2. The opposite sides of the material guiding plates 41 are provided with snap-fit ​​bosses 42. The snap-fit ​​bosses 42 can slide along the longitudinal direction of the material guiding assembly 4 to form a cleaning mechanism 5. The two snap-fit ​​bosses 42 form a receiving gap 200 with the material guiding plates 41 and the lower mold assembly 2. The side wall of the material guiding plate 41 corresponding to the snap-fit ​​bosses 42 is provided with a sliding groove 411 along the longitudinal direction of the material strip 100. The sliding groove 411 is used for the sliding of the snap-fit ​​bosses 42. It should be noted that when the strip 100 is being stamped, the guide plate 41 is in an elevated state. At this time, the inner wall of the guide plate 41 is flat and effectively abuts against the side wall of the strip 100 for better guidance. Simultaneously, the locking boss 42 does not obstruct the passage of the strip 100. Furthermore, the thickness of the locking boss 42 and the lower die base 22 is adjustable according to the thickness of the strip to accommodate strips 100 of different thicknesses. During periodic cleaning, the guide plate 41 moves downwards relative to the lower die base 22. At this time, the bottom of the locking boss 42 on the guide plate 41 contacts the lower die base 22. Then, the driving component of the cleaning mechanism 5 drives the locking boss 42 to slide laterally, thereby achieving rapid and effective removal of impurities. After cleaning, the locking boss 42 is returned to its initial position, and the guide plate 41 rises again, forming the receiving gap 200 to facilitate subsequent material guidance.

[0022] Here, the bottom of each guide plate 41 is raised and lowered by a telescopic structure. In addition, the stability of the telescopic structure is achieved by using a position sensor and a controller to control the position of the guide plate 41.

[0023] It should be noted that the guide plate 41 consists of two separate side plates. The two outer side plates are fixed to the lower template 22, while the two opposing inner side plates are movable relative to the two outer side plates. The inner side plates are tightly fitted against their corresponding outer side plates.

[0024] Furthermore, the cleaning mechanism 5 includes two driving members 51 capable of independently driving the locking boss 42 to slide, and the two driving members 51 are disposed within the slide groove 411 of the guide plate 41. It should also be noted that the two driving members 51 can drive the locking boss 42 independently, that is, the movement of the locking boss 42 can be selectively performed, so as to make the cleaning more flexible.

[0025] Furthermore, the drive component 51 includes a drive motor, a lead screw 512, and a lead screw nut 513. The drive motor is mounted at one end of the slide groove 411, and its output end is connected to the lead screw 512. The lead screw nut 513 is threaded onto the outer wall of the lead screw 512, and the lead screw nut 513 is connected to the locking boss 42. The lead screw nut 513 can drive the locking boss 42 to slide along the axial direction of the lead screw 512. This drive component 51 has a simple structure and is easy to operate, install, and maintain.

[0026] Furthermore, a scraper 421 is provided at the bottom of the snap-fit ​​boss 42. The scraper 421 is used to improve the cleaning effect, and the scraper 421 is formed by multiple scraper units with gaps, which facilitates the cleaning effect of the scraper 421.

[0027] Furthermore, the snap-fit ​​boss 42 is detachably connected to one side of the lead screw nut 513. Specifically, a vertical through groove 5131 is provided on the side wall of the lead screw nut 513, and an arc-shaped sliding groove is provided in the through groove. A baffle is provided in the sliding groove. Correspondingly, a strip-shaped connecting block is fixedly installed on the side of the scraper 421 near the lead screw nut 513. When the strip-shaped connecting block is inserted into the through groove 5131 and rotated 90° clockwise, the strip-shaped connecting block is in a horizontal horizontal state. At this time, the scraper 421 is detachably connected to the bottom of the snap-fit ​​boss 42 and abuts against the lower die base 22. This facilitates the removal of the snap-fit ​​boss 42. Furthermore, the bottom of the snap-fit ​​boss 42 is detachably connected to the scraper 421. Specifically, a pin 422 is provided at the top of the scraper 421, with a spline 423 at its end. An Ω-shaped groove with one open end is provided at the bottom of the snap-fit ​​boss 42, which is used to slide the pin 422 for vertical positioning. When the pin 422 slides into the snap-fit ​​boss 42, its end is inserted into the spline 423 groove on the inner wall of the snap-fit ​​boss 42 for circumferential positioning. This structure facilitates the sliding of the scraper 421, thereby ensuring a cleaning effect.

[0028] Furthermore, the scraper 421 is inclined in the same direction as the feed direction of the conveyor belt 100, and the engaging boss 42 is located at the discharge port of the guide plate 41. This allows for better removal of impurities.

[0029] Furthermore, the inlet end of the guide plate 41 is provided with an inclined guide part 43, the inclined guide part 43 has a cleaning chamber 431 connected to the waste collection chamber, the cleaning chamber 431 has a downwardly inclined opening 432, and the inlet of the cleaning chamber 431 is the movement endpoint of the snap-fit ​​boss 42.

[0030] Furthermore, the upper mold assembly 1 includes an upper mold base 11, an upper mold pad 12, an upper mold clamping plate 13, a stripper back plate 14, and a stripper plate 15. Guide post sleeves 16 that cooperate with the guide posts 31 of the guide post assembly 3 are fixedly installed at the four corners of the bottom end face of the upper mold base 11. The upper mold pad 12, the upper mold clamping plate 13, and the stripper back plate 14 are fixedly installed in sequence on the bottom end face of the upper mold base 11. The stripper plate 15 is slidably installed on the upper mold base 11 through the inner guide post 31.

[0031] Furthermore, the lower die assembly 2 includes a lower die base 21 and a lower die template 22. The guide post assembly 3 includes four vertically arranged guide posts 31. The guide posts 31 are located at the four corners of the bottom end face of the lower die base 21, and the lower die template 22 is fixedly installed on the bottom end face of the lower die base 21. The material guide assembly 4 is disposed on the lower die template 22. It should also be noted that the specific stamping structures of the upper die assembly 1 and the lower die assembly 2 are existing structures and do not require further description here.

[0032] Furthermore, a waste collection chamber is also provided on the lower template 22.

[0033] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A continuously feeding stamping die, characterized in that: It includes an upper die assembly (1), a lower die assembly (2) and a guide post assembly (3) installed on the top of the lower die assembly (2), and the punch on the upper die assembly (1) can be slidably installed on the outer wall of the guide post assembly (3); The lower die assembly (2) is provided with two symmetrically arranged guide assemblies (4). The guide assembly (4) has a receiving gap (200) for placing the material strip (100). A cleaning mechanism (5) is provided on the side of the guide assembly (4) near the receiving gap (200). The cleaning mechanism (5) can slide along the longitudinal direction of the guide assembly (4).

2. The continuously feeding stamping die as claimed in claim 1, characterized in that: The material guiding assembly (4) includes two oppositely arranged material guiding plates (41). Both material guiding plates (41) are disposed on the lower mold assembly (2), and the two material guiding plates (41) can be raised and lowered relative to the lower mold assembly (2) to retract or protrude from the lower mold assembly (2). The opposite sides of the material guiding plates (41) are provided with snap-fit ​​bosses (42). The snap-fit ​​bosses (42) can slide along the longitudinal direction of the material guiding assembly (4) to form the cleaning mechanism (5). The two snap-fit ​​bosses (42) form the receiving gap (200) between the material guiding plates (41) and the lower mold assembly (2). The side wall of the material guiding plate (41) corresponding to the snap-fit ​​bosses (42) is provided with a groove (411) along the longitudinal direction of the material strip (100). The groove (411) is used for the sliding of the snap-fit ​​bosses (42).

3. The continuously feeding stamping die as described in claim 2, characterized in that: The cleaning mechanism (5) includes two driving members (51) that can drive the snap-fit ​​boss (42) to slide respectively. The two driving members (51) are disposed in the groove (411) of the guide plate (41).

4. The continuously feeding stamping die as described in claim 3, characterized in that: The drive component (51) includes a drive motor, a lead screw (512), and a lead screw nut (513). The drive motor is installed at one end of the slide groove (411), and the output end of the drive motor is connected to the lead screw (512). The lead screw nut (513) is threadedly connected to the outer wall of the lead screw (512). The lead screw nut (513) is connected to the locking boss (42). The lead screw nut (513) can drive the locking boss (42) to slide along the axial direction of the lead screw (512).

5. The continuously feedable stamping die as claimed in claim 4, characterized in that: The bottom of the snap-fit ​​boss (42) is provided with a scraper (421).

6. The continuously feedable stamping die as claimed in claim 5, characterized in that: The scraper (421) is inclined, and the inclination direction of the scraper (421) is the same as the feeding direction of the material belt (100). The snap-fit ​​boss (42) is located at the discharge port of the guide plate (41).

7. The continuously feedable stamping die as claimed in claim 2, characterized in that: The inlet end of the guide plate (41) is provided with an inclined guide section (43), the inclined guide section (43) has a cleaning chamber (431) connected to the waste collection chamber, the cleaning chamber (431) has a downward inclined opening (432), and the inlet of the cleaning chamber (431) is the movement endpoint of the snap-fit ​​boss (42).

8. The continuously feedable stamping die as claimed in claim 1, characterized in that: The upper mold assembly (1) includes an upper mold base (11), an upper mold pad (12), an upper mold clamping plate (13), a stripper back plate (14), and a stripper plate (15). The bottom end face of the upper mold base (11) is fixedly installed with guide post sleeves (16) that cooperate with the guide post (31) of the guide post assembly (3) at the four corners. The bottom end face of the upper mold base (11) is fixedly installed with the upper mold pad (12), the upper mold clamping plate (13) and the stripper back plate (14) in sequence. The stripper plate (15) is slidably installed on the upper mold base (11) through the inner guide post (31).

9. The continuously feedable stamping die as claimed in claim 1, characterized in that: The lower mold assembly (2) includes a lower mold base (21) and a lower mold plate (22); The guide post assembly (3) includes four vertically arranged guide posts (31). The guide posts (31) are arranged at the four corners of the bottom end face of the lower mold base (21). The lower template (22) is fixedly installed on the bottom end face of the lower mold base (21). The material guiding assembly (4) is arranged on the lower template (22).

10. The continuously feedable stamping die as claimed in claim 9, characterized in that: The lower template (22) is also provided with a waste collection chamber.

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