Punching needle die
By using modular design and chamfered optimized punch dies, the problem of breakage of traditional punches when punching hard or thick sheet metal has been solved, achieving stable and efficient stamping operations and simplified maintenance processes.
Patent Information
- Application Number
- CN202520344883.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-01
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-01
AI Technical Summary
When punching hard or thick sheet metal, traditional T-type punches experience high stress at the joints, making them prone to breakage and causing mold instability.
The punch die adopts a modular design, including an upper fixed plate, a lower fixed plate, an upper die, and a lower die. The chamfer design reduces stress concentration, and the push plate and spring design facilitate disassembly and demolding, ensuring the stability and accuracy of the stamping process.
It improves the safety performance and working accuracy of the mold, reduces the risk of breakage, ensures the stability and efficiency of stamping operations, and simplifies the maintenance process.
Smart Images
Figure CN223775797U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of a punch pin die, in particular to a punch pin die. BACKGROUND
[0002] The punch pin die is a kind of punch die, mainly composed of a punch pin and a die base and the like, and mainly functions to exert pressure on a material by the punch pin on the die base to make the material produce separation or plastic deformation, so as to process a required part or semi-finished product.
[0003] However, in the process of punching, the existing punch pin is prone to breakage when facing hard or thick plate materials due to large stress at the connection of the traditional T-shaped punch pin. CONTENT OF THE UTILITY MODEL
[0004] In view of the defects in the prior art, the application provides a punch pin die which has the advantages of improving the anti-breakage of the punch pin and the like, and solves the problem of breakage of the traditional T-shaped punch pin at the connection due to large stress in the process of punching hard or thick plate materials.
[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a punch pin die, comprising a lower fixed plate and an upper fixed plate, the lower fixed plate is fixedly connected with four positioning columns arranged in a rectangular array at the upper end, the upper fixed plate is internally provided with a plurality of mounting grooves arranged in a rectangular array, the upper fixed plate is fixedly connected with an upper die at the bottom end, the upper die is internally provided with a plurality of fixing holes arranged in a rectangular array, a plurality of punch pins are slidingly arranged in the mounting grooves, the outer wall of each punch pin is provided with a chamfer at the upper end, the upper end of the upper fixed plate is fixedly connected with an upper cover plate through bolts, and the bottom end of the upper cover plate is fixedly connected with a plurality of top blocks arranged in a rectangular array.
[0006] Through the above-mentioned scheme, the punch pin is slidingly arranged in the mounting groove, so that the installation and disassembly of the punch pin become simple, in addition, the chamfer design on the outer wall of the punch pin not only facilitates the introduction of the punch pin, but also effectively reduces stress concentration and reduces the risk of breakage of the punch pin in the punching process, thereby improving the safety performance of the die, the fixing holes in the upper die are accurately matched with the punch pin, so that the punch pin can accurately act on the workpiece in the punching process, thereby realizing efficient and stable punching operation, at the same time, the top block design at the bottom end of the upper cover plate provides additional support force, which helps to maintain the stability in the punching process, thereby further improving the punching quality, since the device adopts modular design, the connection between the components is simple and clear, and the device is convenient to disassemble and assemble, so that the maintenance difficulty of the die is reduced.
[0007] Further, the upper end of the upper fixed plate is fixedly connected with a pressing plate through bolts, and the upper end of the pressing plate is fixedly connected with a connecting column.
[0008] Through the above scheme, the pressing plate is fixedly connected to the upper end of the upper fixed plate through bolts, which increases the rigidity and stability of the overall structure of the mold, and further fixes the upper cover plate to resist the impact force generated during stamping to prevent the mold from deforming or the punch from loosening. The connecting column is fixedly connected to the upper end of the pressing plate to facilitate the connection of the mold and the stamping machine. The mold can be stably installed on the stamping machine through the connecting column to ensure the stability and accuracy of the stamping operation.
[0009] Further, the upper fixed plate is fixedly connected at the bottom end with four springs arranged in a ring array, and the bottom end of each spring is fixedly connected with a push piece plate, and a plurality of through holes arranged in a rectangular array are formed in the push piece plate.
[0010] Through the above scheme, the design of the push piece plate helps the smooth demolding of the stamped part. After the stamping is completed, the push piece plate moves under the action of the spring to separate the stamped part from the punch. The through holes in the push piece plate help the smooth discharge of waste. The through holes in the push piece plate help the smooth discharge of waste. During the stamping process, the waste can fall into the discharge device below the mold through the through holes, avoiding the accumulation of waste and ensuring the continuity of the stamping operation.
[0011] Further, the lower fixed plate is fixedly connected with a lower mold through bolts, and a stamping hole is formed in the upper end of the lower mold, and a discharge hole is formed in the bottom end of the lower mold.
[0012] Through the above scheme, the lower mold is fixedly connected to the lower fixed plate through bolts. This connection ensures the stability and precision of the mold during stamping. A stable mold structure can ensure that the punch accurately passes through the stamping hole to achieve precise stamping of the workpiece. The design of the stamping hole allows the punch to smoothly pass through the lower mold to stamp the workpiece. The discharge hole is located at the bottom end of the lower mold to discharge the waste generated during stamping, ensuring that the waste can be smoothly discharged from the mold, avoiding the accumulation of waste and the blockage of the mold. The mold is connected to the lower fixed plate through bolts, making it easy and fast to maintain and replace the mold. The operator can easily detach the lower mold from the lower fixed plate for cleaning, maintenance or replacement, thereby improving the maintenance efficiency of the mold.
[0013] Further, two discharge grooves are formed in the bottom end of the lower fixed plate.
[0014] Through the above scheme, the design of the discharge groove allows the waste generated during stamping to be discharged more smoothly from below the mold. The waste falls into the collection device through the discharge groove, avoiding the accumulation of waste below the mold. The waste can be quickly discharged, reducing the downtime of the mold during stamping and improving production efficiency.
[0015] Further, the plurality of punch pins are arranged through the fixing holes, and the plurality of top blocks are slidingly arranged in the installation grooves.
[0016] Through the above scheme, the plurality of punch pins are arranged through the fixing holes in the upper die, and the plurality of top blocks are slidingly arranged in the installation grooves to fix the plurality of punch pins in the installation grooves.
[0017] Further, the plurality of punch pins are arranged through the through holes.
[0018] Through the above scheme, the arrangement of the punch pins through the through holes ensures the accuracy of the stamping process, so that the stamping process is smoother, and the resistance generated by the friction between the punch pins and the push piece plate is reduced.
[0019] Further, the upper fixing plate is internally provided with four positioning holes arranged in a rectangular array, and the four positioning columns are slidingly arranged in the positioning holes.
[0020] Through the above scheme, in the die assembly process, the positioning columns are slidingly inserted into the positioning holes, which ensures the accurate positioning and stable connection between the upper fixing plate and the lower fixing plate, and improves the working accuracy of the die.
[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:
[0022] The punch die has the following advantages: the modular design facilitates disassembly and assembly, reduces the maintenance difficulty of the die, enables the operator to easily clean, maintain or replace parts, improves the maintenance efficiency, the positioning holes in the upper fixing plate and the positioning columns on the lower fixing plate slidingly cooperate, which ensures the accurate positioning and stable connection of the die in the assembly process, thereby improving the working accuracy and stability of the stamping operation, the fixing holes in the upper die cooperate with the punch pins, which ensures that the punch pins can accurately act on the workpiece during the stamping process, realizes stable stamping operation, the chamfer design on the outer wall of the punch pin not only facilitates the introduction of the punch pin, but also effectively reduces stress concentration, reduces the risk of fracture of the punch pin during the stamping process, and improves the safety performance of the die, the design of the push piece plate helps the smooth ejection of the stamped part, and under the action of the spring, the push piece plate pushes the stamped part away from the punch pin, at the same time, the through hole in the push piece plate and the discharge slot at the bottom end of the lower fixing plate design enable the waste to be smoothly discharged from the die, avoiding the accumulation of waste and the blockage of the die. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a whole structure schematic view of the structure of the present application;
[0024] Figure 2 It is a punch pin installation structure schematic view of the structure of the present application;
[0025] Figure 3The structure diagram of the push piece plate structure of the present application structure;
[0026] Figure 4 The structure diagram of the lower fixed plate structure of the present application structure.
[0027] In the figure:
[0028] 1, lower fixed plate; 2, positioning column; 3, upper fixed plate; 4, mounting groove; 5, upper die; 6, fixed hole; 7, punch pin; 8, chamfer; 9, upper cover plate; 10, top block; 11, pressing plate; 12, connecting column; 13, spring; 14, push piece plate; 15, through hole; 16, lower die; 17, stamping hole; 18, discharge hole; 19, discharge groove; 20, positioning hole. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , a punch pin die in the embodiment includes a lower fixed plate 1 and an upper fixed plate 3, the lower fixed plate 1 is fixedly connected with four positioning columns 2 arranged in a rectangular array at the upper end, the upper fixed plate 3 is provided with a plurality of mounting grooves 4 arranged in a rectangular array inside, the upper fixed plate 3 is fixedly connected with an upper die 5 at the bottom end, the upper die 5 is provided with a plurality of fixed holes 6 arranged in a rectangular array inside, a plurality of punch pins 7 are slidingly arranged inside the mounting grooves 4, the punch pins 7 are slidingly arranged in the mounting grooves 4, so that the installation and disassembly of the punch pins 7 become simple, the outer wall of each of the four punch pins 7 is provided with a chamfer 8 at the upper end, the chamfer 8 on the outer wall of the punch pin 7 not only facilitates the introduction of the punch pin 7, but also effectively reduces the stress concentration, reduces the risk of fracture of the punch pin 7 in the stamping process, and improves the safety performance of the die, the upper end of the upper fixed plate 3 is fixedly connected with an upper cover plate 9 through bolts, the bottom end of the upper cover plate 9 is fixedly connected with a plurality of top blocks 10 arranged in a rectangular array.
[0031] Please refer to Figure 1 , Figure 3 and Figure 4The upper end of the upper fixed plate 3 is fixedly connected with a pressing plate 11 through bolts, the upper end of the pressing plate 11 is fixedly connected with a connecting column 12, the pressing plate 11 is fixedly connected at the upper end of the upper fixed plate 3 through bolts, which increases the rigidity and stability of the overall structure of the mold, further fixes the upper cover plate 9, resists the impact force generated in the stamping process, prevents the mold from deforming or the punch 7 from loosening, and provides convenience for the connection between the mold and the stamping machine. The mold can be stably installed on the stamping machine through the connecting column 12, ensuring the stability and accuracy of the stamping operation. The bottom end of the upper fixed plate 3 is fixedly connected with four springs 13 arranged in a ring array, the bottom end of the four springs 13 is fixedly connected with a push piece plate 14, a plurality of through holes 15 arranged in a rectangular array are formed in the push piece plate 14, the design of the push piece plate 14 helps the smooth demolding of the stamping part, and after the stamping is completed, the push piece plate 14 moves under the action of the spring 13, pushes the stamping part away from the punch 7, the through holes 15 in the push piece plate 14 help the smooth discharge of waste, the through holes 15 in the push piece plate 14 help the smooth discharge of waste, and in the stamping process, the waste can fall into the discharging device below the mold through the through holes 15, avoiding the accumulation of waste and ensuring the continuity of the stamping operation. The lower fixed plate 1 is fixedly connected with a lower mold 16 through bolts, the upper end of the lower mold 16 is provided with a stamping hole 17, the bottom end of the lower mold 16 is provided with a discharging hole 18, and the lower mold 16 is fixedly connected on the lower fixed plate 1 through bolts. This connection mode ensures the stability and precision of the mold in the stamping process, and the stable mold structure can ensure that the punch 7 accurately penetrates the stamping hole 17, thereby realizing accurate stamping of the workpiece. The design of the stamping hole 17 enables the punch 7 to smoothly penetrate the lower mold 16 to stamp the workpiece, the discharging hole 18 is located at the bottom end of the lower mold 16, which is used to discharge the waste generated in the stamping process, ensuring that the waste can be smoothly discharged from the mold, avoiding the accumulation of waste and the blockage of the mold. The lower mold 16 is connected with the lower fixed plate 1 through bolts, so that the maintenance and replacement of the mold are simple and fast, and the operator can easily disassemble the lower mold 16 from the lower fixed plate 1 for cleaning, maintenance or replacement, thereby improving the maintenance efficiency of the mold.
[0032] Please refer to Figure 1 , Figure 2 and Figure 4The bottom end of the lower fixed plate 1 is provided with two mirror image arranged discharge grooves 19, the design of the discharge grooves 19 enables the waste produced in the stamping process to be discharged more smoothly from below the mold, the waste falls into the collecting device through the discharge grooves 19, avoiding the accumulation of waste below the mold, the waste can be quickly discharged, reducing the downtime of the mold during the stamping process, improving the production efficiency, the plurality of punch pins 7 are arranged through the fixed holes 6, the plurality of ejector blocks 10 are slidingly arranged inside the mounting grooves 4, the plurality of punch pins 7 are arranged through the fixed holes 6 in the upper die 5, and are used for penetrating the workpiece during the stamping process, the plurality of ejector blocks 10 are slidingly arranged inside the mounting grooves 4 and are used for fixing the plurality of punch pins 7 inside the mounting grooves 4, the plurality of punch pins 7 are arranged through the through holes 15, the arrangement of the punch pins 7 through the through holes 15 ensures the accuracy of the stamping process, making the stamping process more smooth, reducing the resistance generated by the friction between the punch pins 7 and the push piece plate 14, the upper fixed plate 3 is provided with four rectangular array arranged positioning holes 20 inside, and the four positioning columns 2 are slidingly arranged inside the positioning holes 20, during the mold assembly process, the positioning column 2 is slidingly inserted into the positioning hole 20, ensuring the accurate positioning and stable connection between the upper fixed plate 3 and the lower fixed plate 1, and improving the working accuracy of the mold.
[0033] In the embodiment, the punch pin mold is designed in a modular manner, which is convenient to disassemble and assemble, reduces the maintenance difficulty of the mold, enables the operator to easily clean, maintain or replace parts, and improves the maintenance efficiency. The positioning hole 20 in the upper fixed plate 3 and the positioning column 2 on the lower fixed plate 1 are slidingly matched, ensuring the accurate positioning and stable connection of the mold during the assembly process, thereby improving the working accuracy and stability of the stamping operation. The fixed hole 6 in the upper die 5 cooperates with the punch pin 7, ensuring that the punch pin 7 can accurately act on the workpiece during the stamping process, realizing stable stamping operation. The chamfer 8 on the outer wall of the punch pin 7 not only facilitates the introduction of the punch pin 7, but also effectively reduces stress concentration, reduces the risk of fracture of the punch pin 7 during the stamping process, and improves the safety performance of the mold. The design of the push piece plate 14 helps the smooth ejection of the stamped part, and under the action of the spring 13, the push piece plate 14 pushes the stamped part away from the punch pin 7. At the same time, the through hole 15 in the push piece plate 14 and the discharge groove 19 at the bottom end of the lower fixed plate 1 enable the waste to be smoothly discharged from the mold, avoiding the accumulation of waste and the blockage of the mold.
[0034] It should be noted that the upper cover plate 9 is fixed between the pressing plate 11 and the upper fixed plate 3 by bolts, and after the upper cover plate 9 is installed, the pressing plate 11 is installed at the upper end of the upper cover plate 9 to further fix the upper cover plate 9, maintaining the stability of the ejector pin during the stamping process.
[0035] The working principle of the above embodiment is as follows:
[0036] Firstly, the lower fixed plate 1 is fixedly connected to the workbench of the punch machine, the stability of the lower fixed plate 1 is ensured, then the lower die 16 is fixedly connected on the lower fixed plate 1 through bolts, the punch hole 17 of the lower die 16 is ensured to correspond to the discharge groove 19 inside the lower fixed plate 1, then the upper fixed plate 3 is slidably sleeved on the positioning column 2 of the lower fixed plate 1 through the positioning hole 20 inside the upper fixed plate 3, the accurate positioning between the upper fixed plate 3 and the lower fixed plate 1 is ensured, the upper die 5 is installed, the fixing hole 6 of the upper die 5 is ensured to be aligned with the mounting groove 4 on the upper fixed plate 3, so as to install the punch pin 7 subsequently, the punch pin 7 is slidably installed in the mounting groove 4 of the upper fixed plate 3, and the punch pin 7 is ensured to pass through the fixing hole 6 of the upper die 5, the upper cover plate 9 is installed and fixed on the upper fixed plate 3 through bolts, meanwhile, the top block 10 at the bottom end of the upper cover plate 9 is slidably arranged inside the mounting groove 4, which is used for fixing the punch pin 7 in the mounting groove 4, the pressing plate 11 is installed and fixed on the upper fixed plate 3 through bolts, the upper cover plate 9 and the punch pin 7 are further fixed, and the connecting column 12 at the upper end of the pressing plate 11 is connected with the moving end of the punch machine, the workpiece to be punched is placed above the punch hole 17 of the lower die 16, the workpiece is ensured to be aligned with the punch pin 7, the punch machine is started, the punch pin 7 moves downward under the action of the punch machine, passes through the fixing hole 6 of the upper die 5 and the punch hole 17 of the lower die 16, and punches the workpiece, after the punching is completed, the punch pin 7 moves upward under the return action of the punch machine and returns to the initial position, during or after the punching, the pushing piece plate 14 moves downward under the action of the spring 13, pushes the punched workpiece away from the punch pin 7, and the punched workpiece is smoothly demolded, the waste is smoothly discharged from the die through the through hole 15 inside the pushing piece plate 14, the discharge hole 18 inside the lower die 16 and the discharge groove 19 at the bottom end of the lower fixed plate 1, and falls into the collecting device.
[0037] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0038] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary and that changes can be made in detail without departing from the principles and spirit of the application. The scope of the application is therefore defined by the appended claims and their equivalents.
Claims
1. A punch die comprising a lower fixed plate (1) and an upper fixed plate (3), characterized in that: The lower fixed plate (1) is fixedly connected with four positioning columns (2) arranged in a rectangular array at the upper end, the upper fixed plate (3) is provided with a plurality of mounting slots (4) arranged in a rectangular array inside, the upper fixed plate (3) is fixedly connected with an upper mold (5) at the bottom end, the upper mold (5) is provided with a plurality of fixing holes (6) arranged in a rectangular array inside, a plurality of punch pins (7) are slidably arranged inside the mounting slots (4), the outer wall of each punch pin (7) is provided with a chamfer (8) at the upper end, the upper fixed plate (3) is fixedly connected with an upper cover plate (9) at the upper end through bolts, and the upper cover plate (9) is fixedly connected with a plurality of top blocks (10) arranged in a rectangular array at the bottom end.
2. A punch die according to claim 1, wherein: The upper fixed plate (3) is fixedly connected with a pressing plate (11) at the upper end through bolts, and the pressing plate (11) is fixedly connected with a connecting column (12) at the upper end.
3. A punch die as claimed in claim 1, wherein: The upper fixed plate (3) is fixedly connected with four springs (13) arranged in a ring array at the bottom end, and the bottom end of each spring (13) is fixedly connected with a push piece plate (14), and the push piece plate (14) is provided with a plurality of through holes (15) arranged in a rectangular array inside.
4. The die of claim 1 wherein: The lower fixed plate (1) is fixedly connected with a lower mold (16) through bolts, the lower mold (16) is provided with a stamping hole (17) at the upper end inside, and the lower mold (16) is provided with a discharge hole (18) at the bottom end inside.
5. A punch die as claimed in claim 2, wherein: The bottom end of the lower fixed plate (1) is provided with two discharge grooves (19) arranged in a mirror image.
6. A punch die as claimed in claim 4, wherein: Each punch pin (7) is arranged through the fixing hole (6), and each top block (10) is slidably arranged inside the mounting slot (4).
7. A punch die as claimed in claim 4, wherein: Each punch pin (7) is arranged through the through hole (15).
8. A punch die according to claim 3, wherein: The upper fixed plate (3) is provided with four positioning holes (20) arranged in a rectangular array inside, and each positioning column (2) is slidably arranged inside the positioning hole (20).