Automatic demoulding device of punching machine
By setting magnets to fix the cutter on the stamping machine and using ejector pins to push out the test piece, the problem of cutter sticking was solved, ensuring the smooth progress of the stamping process and the convenience of replacement, thus improving operating efficiency.
Patent Information
- Application Number
- CN202520263951.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-19
AI Technical Summary
When cutting rubber sheets, standard test pieces tend to stick to the cutting blade of existing stamping machines, which hinders the normal operation of the cutting blade during the stamping process and affects efficiency.
An automatic die ejection device for a stamping machine was designed. The cutter is fixed with a magnet and an ejector pin and a compression spring are installed inside the cutter. The cutter is fixed with magnetism and the completed test piece is ejected by the ejector pin, thus avoiding sticking.
It enables automatic ejection of standard test pieces, ensuring smooth operation of the punching process and improving operational efficiency and ease of cutter replacement.
Smart Images
Figure CN223763329U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping machine technology, and specifically to an automatic die-out device for a stamping machine. Background Technology
[0002] A punching machine is a piece of equipment used by enterprises or research institutions to punch and cut standard test pieces before conducting tensile tests.
[0003] Existing punching machines cut rubber sheets with a cutter to obtain standard test pieces. During the punching process, the standard test pieces of rubber material stick to the cutter, causing the previously completed standard test piece to stick inside the cutter. When punching the next standard test piece, the previous standard test piece will hinder the normal operation of the cutter. Therefore, it is urgent to ensure that the die is removed after each standard test piece is punched. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic die ejection device for a stamping machine that automatically ejects the stamped standard test piece.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatic die ejection device for a stamping machine, comprising a pressing cylinder, a movable limiting plate, a cutter, a cutter mounting base, a pressing guide post, and a pressing guide sleeve. The pressing guide post is vertically fixed to the lower part of the upper mounting plate, and the pressing cylinder is fixed to the upper part of the upper mounting plate. The upper mounting plate has a central opening, and the piston rod of the pressing cylinder extends downward through the central opening of the upper mounting plate. The end joint of the piston rod is connected to the top of the movable limiting plate. The two ends of the movable limiting plate are provided with corresponding pressing guide sleeves that fit around the pressing guide post. The cutter mounting base is fixed to the lower part of the movable limiting plate, and a magnet is fixed to the center of the lower part of the cutter mounting base. The magnet attracts and fixes the cutter. The cutter mounting base has an ejector pin inside.
[0006] Preferably, there are two ejector pins, which are located at the two ends of the magnet and extend from the middle gap of the cutter.
[0007] Preferably, a compression spring is provided between the ejector pin and the magnet.
[0008] Compared with the prior art, this utility model has the following advantages: By setting a magnet inside the cutter mounting base, the cutter mounting base is adapted to the shape of the cutter, and the magnet is used to fix the cutter, which facilitates the operator to check and replace the cutter in a timely manner; by setting a ejector pin and a compression spring that works with the ejector pin inside the cutter, the standard test piece will be prevented from sticking to the cutter after the cutter completes the punching, ensuring the smooth punching process and the normal operation efficiency of the punching process. Attached Figure Description
[0009] Figure 1 This is an isometric drawing of this utility model.
[0010] Figure 2 This is a bottom view of the present invention.
[0011] Among them, 10-downward cylinder, 11-upper mounting plate, 12-downward guide sleeve, 13-downward guide post, 14-cutter mounting seat, 15-moving limit plate, 16-ejector pin, 17-cutter. Detailed Implementation
[0012] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.
[0013] like Figures 1 to 2 The automatic die ejection device for the stamping machine shown includes a pressing cylinder 10, a moving limiting plate 15, a cutter 17, a cutter mounting base 14, a pressing guide post 13, and a pressing guide sleeve 12. The pressing guide post 13 is vertically fixed below the upper mounting plate 11, and the pressing cylinder 10 is fixed above the upper mounting plate 11. The upper mounting plate 11 has a central opening, and the piston rod of the pressing cylinder 10 extends downward through the central opening of the upper mounting plate 11. The end connector of the piston rod is connected to the top of the moving limiting plate 15. The two ends of the moving limiting plate 15 are provided with corresponding pressing guide sleeves 12 that fit the pressing guide post 13. The cutter mounting base 14 is fixed directly below the moving limiting plate 15. A magnet is fixedly fixed in the center of the lower part of the cutter mounting base 14. The magnet attracts and fixes the cutter 17. The cutter mounting base 14 has an ejector pin 16 inside.
[0014] It should be further explained that, since the cutter 17 is subjected to a large amount of pressure during the pressurization process, repeated pressing can easily cause deformation of the cutter 17, which means that the cutter 17 needs to be inspected and replaced regularly. To address this, a cutter mounting base 14 is provided, and a magnet is fixedly installed in the middle of the cutter mounting base 14 to detachably fix the cutter 17, making it convenient to remove the cutter 17 for inspection and replacement.
[0015] There are two ejector pins 16, which are located at the two ends of the magnet. The ejector pins 16 extend out from the middle gap of the cutter 17, and a compression spring is provided between the ejector pins 16 and the magnet.
[0016] The working process and principle of this utility model are as follows: The rubber sheet is fixed on the punching platform. When the cutter 17 punches downward with the downward pressing cylinder 10, the moving limit plate 15 moves vertically under the action of the downward pressing guide post 13 and the downward pressing guide sleeve 12. The cutter 17 punches the rubber sheet into standard test pieces. The ejector pin 16 retracts under the action of the compression spring. When the output end of the downward pressing cylinder 10 slowly rises, the deformation of the compression spring returns and continuously abuts against the punched standard test piece, so that the completed standard test piece is always pressed against the punching platform. When the cutter 17 is completely separated from the rubber sheet and the compression spring reaches the maximum deformation stroke, the ejector pin 16 disengages from the standard test piece as the output end of the downward pressing cylinder 10 rises, completing the punching.
[0017] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0018] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A punch press automatic knockout device characterized by: Including down pressure cylinder, moving limit board, cutter, cutter mounting seat, down pressure guide column, down pressure guide sleeve, down pressure guide column is vertically fixedly connected below the upper mounting plate, down pressure cylinder is fixedly connected above the upper mounting plate, the middle of the upper mounting plate is provided with hole, the piston rod of down pressure cylinder extends downward from the middle of the upper mounting plate, the end joint of piston rod is connected to the top of moving limit board, the both ends of moving limit board are provided with down pressure guide sleeve corresponding with sleeve down pressure guide column, the cutter mounting seat is fixedly connected below the moving limit board, the magnet is fixedly connected in the middle below the cutter mounting seat, the magnet adsorbs and fixes the cutter, the inside of cutter mounting seat is provided with thimble.
2. The automatic stripper device for a punch press according to claim 1, characterized by: The thimble is provided with two, two thimbles are respectively located at the both ends of magnet, thimble extends from the middle gap of cutter.
3. The automatic stripper device for a punch press as set forth in claim 1, wherein: Compression spring is arranged between thimble and magnet.