Stamping device

Abstract

The utility model discloses a stamping device which comprises an upper die and a lower die, the upper die comprises a die head assembly and a driving assembly, the driving assembly is fixedly arranged on a rack, the die head assembly comprises an upper die head and a die head seat, the upper die head is fixedly arranged on the lower end face of the die head seat, and the end, away from the die head, of the die head seat is fixedly arranged on the driving assembly; a forming concave part is formed in the position, close to the side edge, of the upper die head, and an ejector rod is arranged on the bottom face of the forming concave part. The lower die comprises a lower die core, a lower die cavity is formed in the upper end of the lower die core, a forming protrusion corresponding to the forming concave is arranged in the lower die cavity, material guiding assemblies are arranged on the portions, close to the two sides of the lower die cavity, of the lower die core, and a material guiding channel is defined by the material guiding assemblies so that base metal to be stamped can penetrate through the material guiding channel. And the fixed-length limiting block is arranged on the upper end face of the lower mold core and is positioned in the material guide channel or on the extension section of the material guide channel.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping production of metal parts, in particular to a stamping device. Background Art

[0002] See Figure 1 The figure shows a metal product manufactured by our company. The metal product includes a rectangular main body 40 with a notch 41 symmetrically formed at one end. Our company uses stamping to produce the steel strip 30. During the production process, the position of the steel strip and the stamping die must be ensured to ensure accurate stamping positioning. This not only improves product stamping quality, but also increases the utilization rate of the steel strip. Summary of the Invention

[0003] The purpose of the utility model is to provide a punching device, which is intended to realize the production of the parts mentioned in the background technology.

[0004] In order to solve the above technical problems, the purpose of this utility model is achieved as follows:

[0005] A stamping device comprises an upper mold and a lower mold, the upper mold comprises a die assembly and a driving assembly, the driving assembly is fixed on a frame, the die assembly comprises an upper die and a die seat, the upper die is fixed on the lower end face of the die seat, and the end of the die seat facing away from the die is fixed on the driving assembly; the upper die is provided with a forming recess near the side edge, and the bottom face of the forming recess is provided with a ejector rod; the lower mold comprises a lower die core, a lower die cavity is provided at the upper end of the lower die core, a forming convex corresponding to the forming recess is provided in the lower die cavity, and a material guide assembly is provided on the lower die core on both sides adjacent to the lower die cavity, the material guide assembly encloses a material guide channel so that the mother material to be stamped passes through the material guide channel; it also includes a fixed-length limit block arranged on the upper end face of the lower die core, which is located in the material guide channel or on an extension section of the material guide channel.

[0006] On the basis of the above solution and as a preferred solution of the above solution: an ejection assembly is provided in the lower mold cavity, and the ejection assembly can eject the product in the lower mold cavity upward.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the ejection assembly includes an ejector rod and a compression spring, the bottom of the lower mold cavity is provided with an ejector rod channel, the ejector rod is inserted into the ejector rod channel, and the compression spring keeps the ejector rod pressed upward.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the compression spring is sleeved on the outside of the ejector rod, and a limiting portion is provided at the uppermost end of the ejector rod, a compression spring seat is provided in the ejector rod channel, one end of the compression spring contacts the limiting portion, and the other end contacts the compression spring seat; a second limiting portion is provided at the end of the ejector rod away from the limiting portion, and the diameter of the second limiting portion is larger than the inner diameter of the ejector rod channel.

[0009] Compared with the existing technology, the outstanding and beneficial technical effects of the present invention are: the stamped steel strip is guided by the material guide component, its lateral position is limited, and the feeding accuracy is improved, so that the stamping position is close to the middle position, burrs on the edge are avoided, and the stamping quality is improved; in addition, through the fixed-length limit block, the worker only needs to place the edge of the previous stamping and cutting area against the fixed-length limit block to achieve longitudinal fixed length, thereby minimizing the distance between the two adjacent stamping areas, thereby reducing the waste of steel strip and improving the utilization rate of steel strip materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the main view of the overall structure of the part;

[0011] Figure 2 It is a three-dimensional diagram of the overall structure of the parts;

[0012] Figure 3 It is a three-dimensional diagram of the overall structure of the utility model;

[0013] Figure 4 This is the main view of the overall structure of the utility model;

[0014] Figure 5 It is a three-dimensional diagram of the lower mold structure;

[0015] Figure 6 This is the main view of the lower mold structure;

[0016] Figure 7 It is a three-dimensional diagram of the upper mold structure;

[0017] Figure 8 This is a bottom view of the upper mold structure;

[0018] Figure 9 It is a schematic diagram of the cooperation between the steel strip and the lower die in the stamping state. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the given embodiments, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0021] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0022] See Figure 3-9 As shown, the present application discloses a punching device, see Figure 2 As shown, the stamping device of the present application includes an upper mold 10 and a lower mold 20, the upper mold 10 includes a die assembly 11 and a drive assembly 12, the drive assembly 12 is fixed on the frame 14, the die assembly 11 includes an upper die 111 and a die seat 112, the upper die 111 is fixed to the lower end surface of the die seat 112, and the end of the die seat 112 away from the die 111 is fixed to the drive assembly 12; see Figure 4 、 Figure 7 and Figure 8As shown, a forming recess 1111 is provided near the side edge of the upper die head 111, and a ejector rod 1112 is provided on the bottom surface of the forming recess 1111. Specifically, the upper die head 111 is fixedly connected to the die head seat 112, and the die head seat 112 is fixedly connected to the output end of the drive assembly 12. The drive assembly 12 drives the die head assembly 11 to move up and down. The drive assembly 12 can adopt the same motor cam drive structure as the punching machine, and of course it can also adopt a hydraulic drive method. This is the existing technology. No further details are given; a plurality of guide rods 13 are also fixed on the upper mold base 112, and the guide rods 13 are inserted into the guide sleeves of the fixed plate 14 fixedly connected to the frame, so as to realize the smooth operation of the upper mold base 112; one end of the ejector rod 1112 is fixedly mounted on the fixed plate 14, and the other end can be passed through the bottom of the molding recess 1111 and the ejector hole passing through it. When the driving assembly 12 drives the die head assembly 11 to move upward, the ejector rod 1112 enters the molding recess through the ejector hole to eject the waste material that may exist in the molding recess. The lower die 20 includes a lower die core 21, and a lower die cavity 211 is formed at the upper end of the lower die core 21. A forming protrusion 212 corresponding to the forming concave is provided in the lower die cavity 211. During the stamping process, the forming protrusion 212 can press part of the material into the forming concave 1111, thereby obtaining a notch 41. During the stamping process, manual continuous feeding is adopted. However, since the stamping is continuous and the speed is relatively fast, if the position of the steel strip fed by the worker is offset, it will cause the stamped parts to be partially incomplete, or the edge of the steel strip will be punched, and the edge of the steel strip often has Burrs, etc., will reduce the quality of the product; for this reason, in this embodiment, a material guide assembly is preferably provided on the lower die core 21 on both sides adjacent to the lower die cavity 211, and the material guide assembly encloses a material guide channel so that the mother material to be stamped passes through the material guide channel; specifically, the material guide assembly includes a plurality of material guide columns 23 symmetrically arranged on both sides of the lower die cavity 211, and the circular arc surface of the material guide column forms a restriction on the steel strip. Of course, the minimum gap between the material guide columns 23 on both sides is not less than the width of the steel strip, so that it can ensure good positioning accuracy while also being able to smoothly transport; then. The stamped steel strip is guided by the material guide assembly, its lateral position is limited, and the accuracy of the feed is improved, so that the stamping position is close to the middle position, burrs on the edge are avoided, and the stamping quality is improved. See Figure 5 and Figure 9 As shown, the lower die core 21 also includes a fixed-length stopper 25, located within the material guide channel or on an extension of the channel. With the fixed-length stopper, workers only need to place the edge of the previous stamping and cutting area against the fixed-length stopper to achieve longitudinal fixed length, thereby minimizing the distance between adjacent stamping areas, thereby reducing steel strip waste and improving steel strip material utilization.

[0023] After stamping, part 40 is partially or completely pressed into lower die cavity 211. To facilitate its removal, in this embodiment, an ejector assembly 24 is preferably provided in lower die cavity 211. Ejector assembly 24 can eject the product in lower die cavity 211 upward. Specifically, ejector assembly 24 includes an ejector rod 241 and a compression spring 242. An ejector rod channel is provided at the bottom of lower die cavity 211. Ejector rod 241 is inserted into the ejector rod channel. Compression spring 242 keeps ejector rod 241 pressed upward. The compression spring 242 is sleeved on the outside of the ejector rod 241, and a limit portion 2411 is provided at the top end of the ejector rod 241. A compression spring seat is provided in the ejector rod channel. One end of the compression spring 242 contacts the limit portion 2411, and the other end contacts the compression spring seat. A second limit portion 2412 is provided at the end of the ejector rod 241 away from the limit portion 2411. The diameter of the second limit portion 2412 is larger than the inner diameter of the ejector rod channel. During the stamping process, the ejector rod 241, under the downward pressure of the upper die head, compresses the compression spring and moves it into the ejector rod channel, thereby avoiding interference with the stamping process. When the stamping is completed, the upper die head moves upward, and the ejector rod 241 is also pushed upward by the compression spring, thereby ejecting the part in the lower die cavity upward and achieving material discharge. By rationally selecting the compression spring, sufficient ejection force requirements can be met.

[0024] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A punching device, characterized in that: The invention comprises an upper mold (10) and a lower mold (20), wherein the upper mold (10) comprises a die assembly (11) and a drive assembly (12), wherein the drive assembly (12) is fixed on a frame (14), and the die assembly (11) comprises an upper die (111) and a die seat (112), wherein the upper die (111) is fixed on the lower end surface of the die seat (112), and the die seat (112) is fixed on the drive assembly (12) at one end facing away from the upper die (111); a molding recess (1111) is provided at a position adjacent to a side edge of the upper die (111), and the molding recess (1111) is provided on the upper die (111). 1) is provided with a push rod (1112) on its bottom surface; the lower mold (20) includes a lower mold core (21), the upper end of the lower mold core (21) is provided with a lower mold cavity (211), the lower mold cavity (211) is provided with a molding protrusion (212) corresponding to the molding concave, and the lower mold core (21) is provided with a material guide assembly on both sides adjacent to the lower mold cavity (211), the material guide assembly encloses a material guide channel so that the mother material to be punched passes through the material guide channel; and also includes a fixed-length limit block (25) provided on the upper end surface of the lower mold core (21), which is located in the material guide channel or on an extension section of the material guide channel.

2. A punching device according to claim 1, characterized in that: An ejection assembly (24) is provided in the lower mold cavity (211), and the ejection assembly (24) can eject the product in the lower mold cavity (211) upwards.

3. A punching device according to claim 2, characterized in that: The ejection assembly (24) includes an ejection rod (241) and a compression spring (242). An ejection rod channel is provided at the bottom of the lower mold cavity (211). The ejection rod (241) is inserted into the ejection rod channel. The compression spring (242) keeps the ejection rod (241) pressed upward.

4. A punching device according to claim 3, characterized in that: The compression spring (242) is sleeved on the outside of the ejection rod (241), and a limiting portion (2411) is provided at the uppermost end of the ejection rod (241), and a compression spring seat is provided in the ejection rod channel, one end of the compression spring (242) contacts the limiting portion (2411), and the other end contacts the compression spring seat; a second limiting portion (2412) is provided at one end of the ejection rod (241) away from the limiting portion (2411), and the diameter of the second limiting portion (2412) is larger than the inner diameter of the ejection rod channel.

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