A new numerical control bending machine
By designing and replacing components, the problem of limited applicability of the lower die in traditional CNC bending machines has been solved, enabling rapid switching and replacement of the lower die. This makes it suitable for small-batch, multi-variety production and improves production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG GUOMAI TECH CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional CNC bending machines have lower dies that are only suitable for specific materials, which leads to frequent changes of the lower die when producing small batches of various products, thus reducing production efficiency.
The design incorporates switching and replacement components, utilizing structures such as limit blocks, dovetail blocks, and slides to enable rapid switching and replacement of the lower mold, thereby expanding the applicability of the lower mold.
It improves the applicability and versatility of the lower mold, making it suitable for small-batch, multi-variety production and increasing production efficiency.
Smart Images

Figure CN224406197U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of CNC bending machine technology, specifically relating to a novel CNC bending machine. Background Technology
[0002] A CNC bending machine is a metal sheet forming machine that uses Computer Numerical Control (CNC) technology, primarily used for precise bending of metal sheets. It uses a hydraulic or electric drive system, along with upper and lower dies (the upper die being a punch and the lower die a concave die), to bend the sheet metal into the required angle and shape according to a preset program. Its core advantages lie in high precision, high efficiency, and repeatability, enabling automated production of complex bending processes. Modern CNC bending machines are typically equipped with intelligent control systems that can store multiple processing programs and have functions such as angle compensation and pressure adjustment. They are widely used in sheet metal processing, automotive manufacturing, and electronics industries, and are essential equipment for achieving flexible production.
[0003] The lower die of a CNC bending machine is mainly used to place materials and control the bending angle. However, each type of lower die is usually only suitable for processing specific materials. When bending different materials, the lower die must be changed frequently, which is not suitable for small-batch, multi-variety production. Frequent changes will reduce production efficiency and affect the overall production schedule. Utility Model Content
[0004] The purpose of this utility model is to provide a new type of CNC bending machine, which aims to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A new type of CNC bending machine includes,
[0007] The bending mechanism includes a support plate, a fixed frame fixedly installed on the top of the support plate, a CNC cylinder fixedly installed on the top of the fixed frame, an upper die set at the output end of the CNC cylinder for applying pressure to the material, and a lower die for placing the material.
[0008] Applicable mechanisms include switching components for switching different slots of the lower mold, and replacement components for facilitating the replacement of the lower mold;
[0009] The switching component includes a mounting plate disposed at the bottom of the lower mold, two limiting grooves opened at the top of the mounting plate, and two limiting blocks fixedly installed at the bottom of the lower mold and respectively sliding in conjunction with the two limiting grooves to switch the lower mold slot opening;
[0010] The replacement components include a fixed plate fixedly installed on the top of the support plate, a movable plate slidably installed on the top of the support plate, a connecting plate fixedly installed on the bottom of the mounting plate and snapped between the fixed plate and the movable plate, and two mounting bolts that fix the connecting plate between the fixed plate and the movable plate.
[0011] As a preferred embodiment of this utility model, the switching component further includes a positioning element for limiting the position of the limiting block, and a slot formed on the surface of the limiting block and used in conjunction with the positioning element.
[0012] As a preferred embodiment of this utility model, the positioning component includes a wing bolt threadedly connected to the mounting plate, and a locking rod fixedly installed at the end of the wing bolt and used to engage with the limiting block in a locking groove.
[0013] As a preferred embodiment of this utility model, the replacement component further includes a dovetail block fixedly installed on the surface of the connecting plate, a dovetail groove formed on the surface of the fixed plate and used in conjunction with the dovetail block, two mating blocks fixedly installed on the surface of the connecting plate, and two anti-offset grooves formed on the surface of the movable plate and used in conjunction with the mating blocks.
[0014] In a preferred embodiment of this utility model, two sliders are fixedly installed at the bottom of the movable plate, and a groove for cooperating with the sliders is provided at the top of the support plate.
[0015] Compared with the prior art, the beneficial effects of this utility model are: by cooperating with the switching component and the replacement component, it can be used to switch and replace the lower die, which solves the problem that the lower die of the traditional CNC bending machine is only suitable for bending a single material and has a limited range of applications. It expands the application range and versatility of the lower die and is suitable for small-batch, multi-variety production needs. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the applicable mechanism structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the switching component structure of this utility model;
[0020] Figure 4This is a schematic diagram of the positioning component structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the replacement component structure of this utility model.
[0022] In the diagram: 100, bending mechanism; 110, support plate; 120, fixed frame; 130, CNC cylinder; 140, upper die; 150, lower die; 200, applicable mechanism; 210, switching component; 211, mounting plate; 212, limit groove; 213, limit block; 214, positioning component; 2141, wing bolt; 2142, locking rod; 215, locking groove; 220, replacement component; 221, fixed plate; 222, moving plate; 223, connecting plate; 224, mounting bolt; 225, dovetail block; 226, dovetail groove; 227, connecting block; 228, anti-offset groove. Detailed Implementation
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0026] Example
[0027] Reference Figure 1-5 This is an embodiment of the present invention, which provides a novel CNC bending machine, comprising:
[0028] The bending mechanism 100 includes a support plate 110, a fixed frame 120 fixedly installed on the top of the support plate 110, a CNC cylinder 130 fixedly installed on the top of the fixed frame 120, an upper die 140 disposed at the output end of the CNC cylinder 130 and used to apply pressure to the material, and a lower die 150 used to place the material.
[0029] The applicable mechanism 200 includes a switching component 210 for switching different slots of the lower mold 150, and a replacement component 220 for facilitating the replacement of the lower mold 150.
[0030] The switching component 210 includes a mounting plate 211 disposed at the bottom of the lower mold 150, two limiting grooves 212 opened at the top of the mounting plate 211, and two limiting blocks 213 fixedly installed at the bottom of the lower mold 150 and respectively sliding in cooperation with the two limiting grooves 212 to switch the slot of the lower mold 150.
[0031] The replacement component 220 includes a fixed plate 221 fixedly installed on the top of the support plate 110, a movable plate 222 slidably installed on the top of the support plate 110, a connecting plate 223 fixedly installed on the bottom of the mounting plate 211 and snapped between the fixed plate 221 and the movable plate 222, and two mounting bolts 224 that fix the connecting plate 223 between the fixed plate 221 and the movable plate 222.
[0032] The lower die 150 can be switched and replaced by the cooperation between the switching component 210 and the replacement component 220. This solves the problem that the lower die 150 in traditional CNC bending machines is only suitable for bending a single material and has a limited range of applications. It expands the application range and versatility of the lower die 150 and is suitable for small-batch, multi-variety production needs.
[0033] The lower die 150 adopts a multi-segment V-groove design. Different grooves can be used to bend materials at different angles, which can adapt to a limited range of changes.
[0034] Install the connecting plate 223 between the fixed plate 221 and the movable plate 222. The dovetail block 225 is engaged inside the dovetail groove 226. Then move the movable plate 222 towards the connecting plate 223 so that the mating block 227 is fully engaged inside the anti-displacement groove 228. Then use two mounting bolts 224 to fix the fixed plate 221, the movable plate 222 and the connecting plate 223 together, so as to facilitate the replacement of the connecting plate 223 and thus facilitate the replacement of the lower mold 150.
[0035] Specifically, the switching component 210 also includes a positioning element 214 for limiting the position of the limiting block 213, and a slot 215 formed on the surface of the limiting block 213 and used in conjunction with the positioning element 214.
[0036] The positioning component 214 and the slot 215 work together to limit the position of the limiting block 213, thereby improving the stability of the lower mold 150 after switching.
[0037] Furthermore, the positioning element 214 includes a wing bolt 2141 threadedly connected to the mounting plate 211, and a locking rod 2142 fixedly installed at the end of the wing bolt 2141 and used to engage with the locking groove 215 to engage with the limiting block 213.
[0038] The mounting plate 211 has several threaded holes on its surface. The wing bolt 2141 is fitted into the threaded holes. The diameter of the clamping rod 2142 is slightly smaller than that of the wing bolt 2141 so that the clamping rod 2142 can be easily stored in the threaded holes.
[0039] Preferably, the replacement component 220 also includes a dovetail block 225 fixedly mounted on the surface of the connecting plate 223, a dovetail groove 226 formed on the surface of the fixed plate 221 and used in conjunction with the dovetail block 225, two mating blocks 227 fixedly mounted on the surface of the connecting plate 223, and two anti-offset grooves 228 formed on the surface of the moving plate 222 and used in conjunction with the mating blocks 227.
[0040] The dovetail block 225 and the dovetail groove 226 are used to ensure the positioning of the connecting plate 223 in the early stage of installation and prevent the connecting plate 223 from shifting between the fixed plate 221 and the moving plate 222. The mating block 227 and the anti-offset groove 228 cooperate to limit the connecting plate 223 and prevent the connecting plate 223 from shifting laterally.
[0041] Furthermore, two sliders are fixedly installed at the bottom of the movable plate 222, and a groove for use with the sliders is provided on the top of the support plate 110.
[0042] The cooperation between the slide and the slider ensures the stability of the moving plate 222 during movement, preventing it from shifting relative to the fixed plate 221 and affecting the clamping effect on the connecting plate 223.
[0043] In use, according to the required bending angle of the material, adjust the slot used by the lower die 150, rotate the wing bolt 2141 so that the wing bolt 2141 gradually exits the threaded hole, and the wing bolt 2141 drives the locking rod 2142 to disengage from the inside of the locking groove 215, so that the limiting block 213 can slide freely inside the limiting groove 212. At this time, move the lower die 150 to move the slot used to the lower die 140 directly below, and then rotate the corresponding wing bolt 2141 so that the wing bolt 2141 drives the locking rod 2142 to engage inside the locking groove 215, further limiting the limiting block 213, and completing the switching of the slot of the lower die 150;
[0044] When the lower mold 150 needs to be replaced, rotate the two mounting bolts 224 off the surface of the moving plate 222 to remove it, displace the moving plate 222, and then pull the lower mold 150 upward so that the dovetail block 225 disengages from the inside of the dovetail groove 226 to replace the lower mold 150. The replaced lower mold 150 needs to be reinstalled. Install the connecting plate 223 between the fixed plate 221 and the moving plate 222, and snap the dovetail block 225 into the inside of the dovetail groove 226. Then move the moving plate 222 toward the connecting plate 223 so that the mating block 227 is completely snapped into the inside of the anti-displacement groove 228. Finally, use the two mounting bolts 224 to fix the fixed plate 221, the moving plate 222 and the connecting plate 223 together to complete the replacement of the lower mold 150.
[0045] In summary, the cooperation between the switching component 210 and the replacement component 220 enables the switching and replacement of the lower die 150, solving the problem that the lower die 150 in traditional CNC bending machines is only suitable for bending a single material and has a limited range of applications. This expands the applicability and versatility of the lower die 150, making it suitable for small-batch, multi-variety production needs.
[0046] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0047] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0048] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A novel CNC bending machine, characterized in that: include, The bending mechanism (100) includes a support plate (110), a fixed frame (120) fixedly installed on the top of the support plate (110), a CNC cylinder (130) fixedly installed on the top of the fixed frame (120), an upper die (140) disposed at the output end of the CNC cylinder (130) and used to apply pressure to the material, and a lower die (150) used to place the material. The applicable mechanism (200) includes a switching component (210) for switching different slots of the lower mold (150) and a replacement component (220) for facilitating the replacement of the lower mold (150). The switching component (210) includes a mounting plate (211) disposed at the bottom of the lower mold (150), two limiting grooves (212) opened at the top of the mounting plate (211), and two limiting blocks (213) fixedly installed at the bottom of the lower mold (150) and respectively sliding in cooperation with the two limiting grooves (212) to switch the slot of the lower mold (150). The replacement component (220) includes a fixed plate (221) fixedly installed on the top of the support plate (110), a movable plate (222) slidably installed on the top of the support plate (110), a connecting plate (223) fixedly installed on the bottom of the mounting plate (211) and snapped between the fixed plate (221) and the movable plate (222), and two mounting bolts (224) for fixing the connecting plate (223) between the fixed plate (221) and the movable plate (222).
2. The novel CNC bending machine according to claim 1, characterized in that: The switching component (210) also includes a positioning element (214) for limiting the position of the limiting block (213), and a slot (215) formed on the surface of the limiting block (213) and used in conjunction with the positioning element (214).
3. A novel CNC bending machine according to claim 2, characterized in that: The positioning element (214) includes a wing bolt (2141) threadedly connected to the mounting plate (211), and a locking rod (2142) fixedly installed at the end of the wing bolt (2141) and used to engage the limiting block (213) with the locking groove (215).
4. A novel CNC bending machine according to claim 3, characterized in that: The replacement component (220) also includes a dovetail block (225) fixedly installed on the surface of the connecting plate (223), a dovetail groove (226) opened on the surface of the fixed plate (221) and used in conjunction with the dovetail block (225), two mating blocks (227) fixedly installed on the surface of the connecting plate (223), and two anti-offset grooves (228) opened on the surface of the moving plate (222) and used in conjunction with the mating blocks (227).
5. A novel CNC bending machine according to claim 4, characterized in that: Two sliders are fixedly installed at the bottom of the movable plate (222), and a groove for use with the sliders is provided at the top of the support plate (110).