Progressive die for machining strip-shaped structure with special-shaped edges
The continuous mold design addresses inefficiencies in processing asymmetrical five-gold pieces by integrating punch and die components for precise, continuous processing, enhancing efficiency and reducing costs.
Patent Information
- Application Number
- CN202422215424.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The prior art is difficult to efficiently process special-shaped hardware with complex structures, especially strip-shaped hardware with holes and edges, which have problems such as large equipment occupying space, high energy consumption, many manual operations, and difficult to ensure accuracy.
A continuous mold with integrated hole punching, tapping, edge cutting and bending functions is designed. Through the segment design of the upper mold body and the lower mold body, multiple sets of punching knives and power units are used to realize the continuous punching and bending of the material belt, ensuring processing accuracy and efficiency.
It improves processing accuracy and efficiency, reduces labor and energy costs, expands the application range of continuous molds in special-shaped hardware processing, and reduces equipment space and manual operation errors.
Smart Images
Figure CN223098556U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of progressive dies, in particular to a progressive die for processing a strip-shaped structure with a special-shaped edge. Background Art
[0002] As an advanced die technology, the progressive die has many advantages in the processing of hardware parts. The positioning accuracy between each process of the progressive die is high, which can effectively ensure the dimensional accuracy and shape accuracy of the hardware parts. At the same time, when using the progressive die for processing, only one positioning is required to complete multiple processes in one stamping stroke, which greatly reduces the processing time and the handling time between processes, thus significantly improving the production efficiency. In addition, the progressive die has a high degree of automation, which can reduce manual operation, lower the labor intensity and safety risks, and can improve the utilization rate of materials and reduce the production cost. However, for some hardware parts with complex special-shaped structures, the application of the progressive die faces many difficulties. Taking a strip-shaped hardware part with holes and a special-shaped edge as an example, it needs to be bent in a U shape. Due to its small width dimension and large length dimension, it is difficult to carry out continuous processing. In the existing production process, it usually can only be processed in multiple steps using multiple devices. The processing method using multiple devices has many disadvantages. First of all, multiple devices occupy a large amount of space and have high requirements for the production site. In some production environments with limited space, the placement and layout of the devices will become a problem, affecting the smooth progress of production. Secondly, the energy consumption is high when multiple devices are running. Each device needs to consume a certain amount of energy. When multiple devices are running simultaneously, the energy consumption is large, increasing the production cost. Moreover, the processing method using multiple devices requires more manual operations. The process conversion between different devices needs to be carried out manually for handling and adjustment, which not only increases the labor cost but also reduces the production efficiency. In addition, manual operations are prone to errors, affecting the quality and accuracy of the hardware parts. Therefore, it is necessary to propose an improved technical solution to solve the above problems. Summary of the Utility Model
[0003] The utility model aims to provide a technical solution to solve the above problems in order to overcome the above deficiencies.
[0004] A progressive die for processing a strip-shaped structure with a special-shaped edge, which is used to continuously punch a strip of material into multiple workpieces, includes an upper die body and a lower die body. The upper die body and the lower die body are divided into a punching section, a tapping section, a trimming section, and a bending section from front to back. The punching section, the trimming section, and the bending section all have punching inner die bodies, and the tapping section has a tapping machine.
[0005] The punching inner die body corresponding to the punching section is provided with a first punching knife for punching the strip, the tapping machine is provided with a tapping knife for tapping the position punched by the first punching knife and a power unit for driving the tapping knife to tap the workpiece, the punching inner die body corresponding to the trimming section is provided with a plurality of groups of first trimming knives for trimming the workpiece, and the punching inner die body corresponding to the bending section is provided with a bending punching knife for bending the workpiece and a second trimming knife for cutting off and demolding the workpiece.
[0006] Among them, the plurality of groups of first trimming knives have two groups of internal trimming knives and two groups of edge trimming knives. The two groups of internal trimming knives are arranged to act on the left and right regions of the strip in sequence, so that connection sections are formed in the middle and on the left and right sides of the punched portion of the strip. The two groups of edge trimming knives are arranged to simultaneously cut off the connection sections on the left and right sides of the strip, and the second trimming knife is used to cut off the connection section in the middle of the strip.
[0007] Preferably, the punching inner die body corresponding to the punching section is provided with a second punching knife for positioning and opening each connection section.
[0008] Preferably, the knife surfaces of the internal trimming knife and the edge trimming knife are both special-shaped long strip structures, and the edge trimming knife has an extension portion for trimming the edge of the strip.
[0009] Preferably, the internal trimming knife and the edge trimming knife have an overlapping section for punching the same position of the strip.
[0010] Preferably, the upper die body is provided with an upper cover plate and an upper die base installed at the lower end of the upper cover plate. The lower die body is provided with a lower base plate and a plurality of lower cushion blocks located at the lower end of the lower base plate. The punching inner die body has an upper backing plate installed at the lower end of the upper die base, an upper clamping plate installed at the lower end of the upper backing plate, a stripper plate installed at the lower end of the upper clamping plate, a lower backing plate installed on the lower base plate, and a lower template installed on the lower backing plate. The stripper plate is correspondingly matched with the lower template; the first punching knife, the second punching knife, the first trimming knife and the second trimming knife are all fixed through the upper clamping plate, and the power unit is installed on the lower base plate.
[0011] Preferably, a stop plate is further installed between the upper clamping plate and the stripper plate.
[0012] Compared with the prior art, the beneficial effects of the present utility model are:
[0013] In terms of machining accuracy, through reasonable structural design, this progressive die can effectively ensure the accuracy of the machined workpieces. The machining process in the die is segmented into a punching section, a tapping section, a trimming section, and a bending section. Each section cooperates in an orderly manner. Starting from punching, the first punching tool punches holes precisely. Then, the tapping tool and the power unit directly complete tapping inside the die, ensuring the machining accuracy of the holes. During the trimming process, the special design of multiple groups of first trimming tools, including two groups of internal trimming tools and two groups of edge trimming tools, through the sequential action of the internal trimming tools and the simultaneous action of the edge trimming tools, avoids the adverse effects of concentrated trimming on the workpieces with special-shaped edges. Moreover, the operation of first punching in the shape of flat holes on the strip, leaving only three connecting sections in the middle and on both sides, and then removing the connecting sections on both sides effectively prevents damage such as stretching to the workpieces during trimming, thus ensuring the shape accuracy of the workpieces. In the bending section, the bending punch can accurately perform the bending operation on the workpieces, ensuring that the shape of the final workpieces meets the requirements.
[0014] In terms of production efficiency, this progressive die greatly improves production efficiency. Since each process is carried out continuously in the same die, only one positioning is required to complete multiple processes in one stamping stroke. Compared with the traditional processing method using multiple devices, the handling time between processes is reduced. Moreover, in the whole machining process, there is no need for frequent equipment conversion and manual handling adjustment, avoiding the time waste caused by process conversion, making the machining process smooth, and being able to quickly cut the strip into multiple workpieces continuously, thus increasing the output per unit time.
[0015] In terms of cost control, first of all, its high degree of automation reduces manual operation, lowering labor costs. During the machining process, the connection between each process does not require manual intervention, avoiding the errors that are prone to occur in manual operation, and at the same time reducing the labor intensity and safety risks of manual operation. Secondly, due to the integrated die design, compared with machining using multiple devices, it saves the space occupied by equipment, reduces the requirements for the production site, and avoids the layout problems and cost increase caused by limited production space. Moreover, the energy consumption of this progressive die is relatively low, avoiding the high energy consumption caused by the simultaneous operation of multiple devices and reducing production costs.
[0016] In terms of machining applicability, this progressive die effectively solves the difficulties faced by traditional progressive dies in machining special-shaped metal parts with complex structures. For strip-shaped metal parts with holes and special-shaped edges, especially those that need to be made into U-shaped bends, have small width dimensions and large length dimensions, this progressive die can achieve continuous machining, breaking through the limitation that traditional progressive dies are difficult to machine such metal parts, and expanding the application range of progressive dies in the field of machining special-shaped metal parts.
[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0019] Figure 1 is the front structural schematic diagram of the present utility model;
[0020] Figure 2 is the structural schematic diagram of the cutting tool and the upper clamping plate in the present utility model;
[0021] Figure 3 is the side structural schematic diagram of the present utility model in the mold closing state;
[0022] Figure 4 is the side structural schematic diagram of the present utility model in the mold opening state;
[0023] Figure 5 is the layout drawing of the strip in the present utility model.
[0024] The reference numerals and names in the drawings are as follows:
[0025] Upper die body 10, upper cover plate 11, upper die base 12, lower die body 20, lower substrate 21, lower spacer block 22, punching section 31, tapping section 32, trimming section 33, bending section 34, first punching knife 35, first cutting knife 36, internal cutting knife 361, edge cutting knife 362, bending punching knife 37, second cutting knife 38, second punching knife 39, cutting inner die body 40, upper backing plate 41, upper clamping plate 42, stripping plate 43, lower backing plate 44, lower template 45, stop plate 46, tapping knife 51, power unit 52. Detailed Embodiments
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0027] Please refer to Figures 1-5, which is a front structural schematic diagram of the present utility model. The present utility model provides a progressive die for processing a strip structure with a special-shaped edge, which is used to continuously punch a strip of material into multiple workpieces, including an upper die body 10 and a lower die body 20. The upper die body 10 and the lower die body 20 are divided into a punching section 31, a tapping section 32, a trimming section 33, and a bending section 34 from front to back. The punching section 31, the trimming section 33, and the bending section 34 all have punching inner die bodies 40, and the tapping section 32 has a tapping machine;
[0028] The punching inner die body 40 corresponding to the punching section 31 is provided with a first punching knife 35 for punching the strip of material. The tapping machine is provided with a tapping knife 51 for tapping the position punched by the first punching knife 35 and a power unit 52 for driving the tapping knife 51 to tap the workpiece. The punching inner die body 40 corresponding to the trimming section 33 is provided with multiple groups of first trimming knives 36 for trimming the workpiece. The punching inner die body 40 corresponding to the bending section 34 is provided with a bending punch 37 for bending the workpiece and a second trimming knife 38 for cutting off and demolding the workpiece;
[0029] Among them, please refer to Figure 2 , the multiple groups of first trimming knives 36 have two groups of internal trimming knives 361 and two groups of edge trimming knives 362. The two groups of internal trimming knives 361 are arranged to act on the left and right regions of the strip of material in sequence, so that connection sections are formed in the middle and on the left and right sides of the cut part of the strip of material. The two groups of edge trimming knives 362 are arranged to simultaneously cut off the connection sections on the left and right sides of the strip of material. The second trimming knife 38 is used to cut off the connection section in the middle of the strip of material.
[0030] The technical solution of the present utility model aims to punch out a long strip of workpiece with a hole and an abnormal-shaped edge structure, and bend both ends of the workpiece to form a workpiece with a U-shaped bending structure. In the design of the die structure, it is divided into a punching section 31, a tapping section 32, a trimming section 33 and a bending section 34. By adopting an integrated tapping tool 51 and a power unit 52, the tapping step can be directly completed within the die. In the processing steps, first, a first punching tool 36 punches holes in the strip, then the tapping tool 51 taps the punched positions to complete the punching and tapping operations of the workpiece. Then, by using two sets of internal punching tools 361 and two sets of edge punching tools 362, the two sets of internal punching tools 361 are arranged in sequence to perform segmented punching on the strip, and the two sets of edge punching tools 362 simultaneously punch both sides of the strip. Each time after being punched by the first punching tool 36, a workpiece is formed in which only the middle connecting section is connected to the strip. The strip is fed into the final bending section 34 through the middle connecting section. After the workpiece is bent by the bending punch 37, the middle connecting section is cut off by the second punching tool 38, so that the bent workpiece falls out of the die after being cut off. In the structural design, since the edge of the workpiece is abnormal-shaped, multiple sections of the first punching tool 36 are required to perform segmented punching on the strip, which can avoid adverse effects on the workpiece during concentrated punching and can effectively process a long strip of workpiece with an abnormal-shaped edge structure. In the distribution of multiple sections of the first punching tool 36, by first punching the strip in the structure of a flat hole, only three connecting sections in the middle and on both sides remain at the punched positions of the strip. Then, the edge punching tool 362 cuts off the connecting sections on both sides, so that the trimming operation will not cause damage such as stretching to the workpiece, ensuring the processing quality of the workpiece.
[0031] Please refer to Figure 1 , Figure 2 and Figure 5, on the basis of the above technical solution, the present utility model further proposes that the punching inner die body 40 corresponding to the punching section 31 is provided with a second punching knife 39 for positioning and opening each connection section. The second punching knife 39 can punch holes in the position of the strip connection section, and a positioning structure corresponding to this hole position, such as a pin, is arranged in the mold, which can enable more accurate positioning during the processing of the strip. Therefore, by punching holes in the connection section position with the second punching knife 39 and combining with the positioning structure, more accurate positioning is achieved. In complex processing procedures, such as from punching, tapping to trimming, bending and other processes, this accurate positioning can effectively prevent the strip from shifting in position during processing, thereby ensuring the dimensional accuracy and shape accuracy of each workpiece, reducing the generation of waste products, and ensuring the stability of product quality; and accurate positioning can reduce the processing interruption and adjustment time caused by inaccurate strip position, making the processing process more smooth and efficient, which helps to improve the overall production efficiency; in addition, in terms of cost control, due to the improvement of processing accuracy and production efficiency, the waste of waste products and processing time is reduced, thereby reducing the production cost. At the same time, problems such as mold wear caused by position deviation are reduced, the service life of the mold is extended, and the cost is further saved.
[0032] Please refer to Figure 1 , Figure 2 and Figure 5 , on the basis of the above technical solution, the present utility model further proposes that the cutting surfaces of both the internal cutting knife 361 and the edge cutting knife 362 are in the shape of special-shaped long strips, and the edge cutting knife 362 has an extension part for cutting the edge of the strip, so that the edge of the strip can be completely cut off, ensuring the processing of the entire edge of the workpiece, thereby improving the processing accuracy of the workpiece; the internal cutting knife 361 and the edge cutting knife 362 have an overlapping section for cutting the same position of the strip, so that the joint where the workpiece is cut by the internal cutting knife 361 and the external cutting knife can be better cut. The cutting surfaces of the internal cutting knife 361 and the edge cutting knife 362 are designed in the shape of special-shaped long strips and the edge cutting knife 362 is provided with an extension part, which can ensure that the edge of the strip is completely cut off, thereby realizing the complete processing of the entire edge of the workpiece, avoiding defects and irregularities at the edge, and greatly improving the processing accuracy of the workpiece. Moreover, there is an overlapping section where the internal cutting knife 361 and the edge cutting knife 362 cut the same position of the strip, which enables the joint of the workpiece during internal cutting and external cutting to be better cut, effectively reducing the quality problems caused by improper joint treatment.
[0033] Please refer to Figure 1 , Figure 3 and Figure 4, on the basis of the above technical solution, the present utility model further proposes that the upper die main body 10 is provided with an upper cover plate 11 and an upper die base 12 installed at the lower end of the upper cover plate 11, the lower die main body 20 is provided with a lower base plate 21 and a plurality of lower cushion blocks 22 located at the lower end of the lower base plate 21. The upper cover plate 11 can provide uniform supporting force for the upper die base 12, while the lower cushion blocks 22 enhance the bearing capacity of the lower base plate 21 and effectively disperse the pressure borne by the die during the processing. This stable structure can reduce the deformation caused by stress concentration during the long-term use of the die and extend the service life of the die. The punching inner die body 40 has an upper backing plate 41 installed at the lower end of the upper die base 12, an upper clamping plate 42 installed at the lower end of the upper backing plate 41, a stripper plate 43 installed at the lower end of the upper clamping plate 42, a lower backing plate 44 installed on the lower base plate 21, and a lower template 45 installed on the lower backing plate 44. The stripper plate 43 corresponds and cooperates with the lower template 45; The first punching knife 35, the second punching knife 39, the first cutting knife 36 and the second cutting knife 38 are all fixed by the upper clamping plate 42, and the power unit 52 is installed on the lower base plate 21; During the stamping process, the upper die base 12 will transmit a huge impact force. The upper backing plate 41 can play a buffering role to reduce the impact force received by the upper die base 12, thereby protecting the upper die base 12 from direct stress impact and preventing it from deforming or being damaged prematurely. The upper clamping plate 42 is a key component for fixing the cutting tools. Cutting tools such as the first punching knife 35, the second punching knife 39, and the first cutting knife 36 are all fixed by the upper clamping plate 42, which can ensure the stable position of the cutting tools during the processing and prevent them from moving or shaking easily, thus ensuring the processing accuracy. After the stamping is completed, the workpiece will be tightly stuck on the die. The stripper plate 43 can move upward in cooperation with other components such as elastic elements like springs to smoothly separate the workpiece stuck on the die from the die, avoiding the adhesion of the workpiece to the die and ensuring the continuity of the processing process. The lower backing plate 44 is similar to the upper backing plate 41. The lower backing plate 44 plays a buffering role at the lower part of the die. When the die performs the stamping operation, the lower template 45 bears the impact force from the upper die. The lower backing plate 44 can reduce the influence of this impact force on the lower template 45 and the lower base plate 21, protect the bottom structure of the die, and extend the service life of the die. During the stamping process, the lower template 45 provides a stable supporting surface for the workpiece. The strip contacts the lower template 45 under the action of the punching force, and the lower template 45 ensures that the workpiece can be formed according to the predetermined shape and size during the processing. In addition, a stop plate 46 is installed between the upper clamping plate 42 and the stripper plate 43. The stop plate 46 can accurately limit the movement of the strip during the processing, prevent the strip from moving or shaking excessively during the stamping process, ensure that each processing step can be carried out at the predetermined position, and thus improve the dimensional accuracy and shape accuracy of the workpiece.
[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model.
Claims
1. A progressive die for processing a strip structure with a special-shaped edge, which is used to continuously punch a strip into a plurality of workpieces, and is characterized in that It includes an upper die body (10) and a lower die body (20). The upper die body (10) and the lower die body (20) are divided into a punching section (31), a tapping section (32), a trimming section (33), and a bending section (34) from front to back. The punching section (31), the trimming section (33), and the bending section (34) all have a punching inner die body (40), and the tapping section (32) has a tapping machine; The punching inner die body (40) corresponding to the punching section (31) is provided with a first punching knife (35) for punching the strip. The tapping machine is provided with a tapping knife (51) for tapping the position punched by the first punching knife (35) and a power unit (52) for driving the tapping knife (51) to tap the workpiece. The punching inner die body (40) corresponding to the trimming section (33) is provided with multiple groups of first trimming knives (36) for trimming the workpiece. The punching inner die body (40) corresponding to the bending section (34) is provided with a bending punch (37) for bending the workpiece and a second trimming knife (38) for cutting off the workpiece and demolding; Among them, the multiple groups of first trimming knives (36) have two groups of internal trimming knives (361) and two groups of edge trimming knives (362). The two groups of internal trimming knives (361) are arranged to act on the left and right areas of the strip in sequence, so that connection segments are formed in the middle and on the left and right sides of the cut part of the strip. The two groups of edge trimming knives (362) are arranged to cut off the connection segments on the left and right sides of the strip simultaneously, and the second trimming knife (38) is used to cut off the connection segment in the middle of the strip.
2. The progressive die for processing a strip structure with a special-shaped edge according to claim 1, wherein The punching inner die body (40) corresponding to the punching section (31) is provided with a second punching knife (39) for positioning and opening each connection segment.
3. The progressive die for processing a strip-shaped structure with a special-shaped edge according to claim 1, characterized in that, The knife surfaces of the internal trimming knife (361) and the edge trimming knife (362) are both in the shape of a special-shaped long strip, and the edge trimming knife (362) has an extension part for trimming the edge of the strip.
4. A progressive die for processing a strip-shaped structure with a special-shaped edge according to claim 1, characterized in that, The internal trimming knife (361) and the edge trimming knife (362) have an overlapping section for punching the same position of the strip.
5. A progressive die for processing a strip structure with a special-shaped edge according to claim 2, characterized in that The upper die body (10) is provided with an upper cover plate (11) and an upper die base (12) installed at the lower end of the upper cover plate (11). The lower die body (20) is provided with a lower base plate (21) and multiple lower cushion blocks (22) located at the lower end of the lower base plate (21). The punching inner die body (40) has an upper cushion plate (41) installed at the lower end of the upper die base (12), an upper clamping plate (42) installed at the lower end of the upper cushion plate (41), a stripper plate (43) installed at the lower end of the upper clamping plate (42), a lower cushion plate (44) installed on the lower base plate (21), and a lower template (45) installed on the lower cushion plate (44). The stripper plate (43) is correspondingly matched with the lower template (45); the first punching knife (35), the second punching knife (39), the first trimming knife (36), and the second trimming knife (38) are all fixed through the upper clamping plate (42), and the power unit (52) is installed on the lower base plate (21).
6. The progressive die for processing the strip-shaped structure with a special-shaped edge according to claim 1, wherein A stop plate (46) is also installed between the upper clamping plate (42) and the stripper plate (43).