Numerical control metal plate bending machine

Abstract

The utility model relates to the technical field of bending machines, and discloses a numerical control metal plate bending machine which comprises a base, the upper end face of the base is fixedly connected with a supporting table, the upper end face of the supporting table is fixedly provided with a lower die base, and the two sides of the upper end face of the lower die base are fixedly connected with limiting rods. A driving part is arranged on the upper end face of the downward pressing seat, limiting assemblies are arranged on the two sides of the upper end face of the base, downward pressing bending is conducted on a plate through the arranged driving part, in the bending process of the plate, when the bending radius of the plate is decreased and the bending angle is increased, the deformation degree is increased accordingly, and the two ends of the plate gradually move towards the inner side of the bending center; the moving tracks of the two ends of the plate can be controlled through the limiting rollers, the plate can be prevented from moving up and down, and therefore the two ends of the plate are prevented from being bent.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a numerically controlled metal plate bending machine. Background Art

[0002] CNC sheet metal bending machine is an auxiliary device for bending metal sheets. It has been widely used in the field of bending devices. The existing metal sheet bending methods are mostly manual bending, which has poor bending efficiency and bending effect, and is not conducive to batch bending processing. The basic principle of CNC sheet metal bending is to place the metal sheet on the working table of the bending machine, and through the control of the CNC system, the bending machine drives the working table to move, so that the sheet is bent according to the predetermined path, and finally reaches the required shape and angle.

[0003] However, during the stamping process, workers are required to manually place the sheet metal on the lower die seat and position it before stamping and bending. Therefore, it is very troublesome for employees to load the material every time, which not only wastes time but also has certain risks. In addition, the sheet metal bending process will cause the two ends to move toward the bending part due to deformation, and it is difficult to limit and press the movement of the two ends in the prior art, which will cause the two ends of the sheet metal to bend during the bending process. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the utility model aims to provide a CNC metal sheet bending machine, the purpose of which is to limit and press the two ends of the sheet during the sheet bending process to avoid bending at both ends of the sheet.

[0006] To solve the above technical problems, the utility model provides the following technical solutions: a CNC metal sheet bending machine comprises a base, the upper end surface of the base is fixedly connected to a support platform, the upper end surface of the support platform is fixedly installed with a lower die seat, both sides of the upper end surface of the lower die seat are fixedly connected with a limiting rod, the top sliding sleeve of the limiting rod is provided with a lower pressure seat, the upper end surface of the lower pressure seat is provided with a driving part, and both sides of the upper end surface of the base are provided with a limiting assembly, and the limiting assembly comprises a fixed frame fixedly connected to the base, the bottom wall of the fixed frame is rotatably connected with a two-way screw rod, the top of the two-way screw rod passes through the top wall of the fixed frame and the end is fixedly connected with a handle, the upper and lower sides of the two-way screw rod are threadedly sleeved with sliding sleeves, the side walls of the sliding sleeve are fixedly connected with protruding rods, the ends of the protruding rods away from the sliding sleeves are fixedly connected with connecting plates, and the side walls of the connecting plates away from the protruding rods are rotatably connected with limiting rollers.

[0007] As a preferred solution of the CNC metal sheet bending machine described in the utility model, the driving part includes a mounting frame fixedly connected to the base, a cylinder is fixedly installed on the mounting frame, and the movable end of the cylinder is fixedly connected to the upper end surface of the lower pressure seat.

[0008] As a preferred solution of the CNC sheet metal bending machine of the utility model, an opening is provided on the side wall of the fixed frame, and the protruding rod extends through the opening to the outside of the fixed frame.

[0009] As a preferred solution of the CNC metal sheet bending machine described in the utility model, the upper end surface of the lower pressure seat is provided with through holes on both sides, and the upper end surface of the lower die seat is fixedly connected with positioning rods adapted to the through holes on both sides, and the top end of the positioning rods vertically penetrates the through holes upward.

[0010] As a preferred solution of the CNC metal sheet bending machine described in the utility model, wherein: two lifting rods are vertically inserted in the groove at the middle end of the lower pressure seat, the top ends of the lifting rods are fixedly connected to the top plate, the upper end surface of the top plate is fixedly connected to the V-shaped mold, a spring is wound around the outside of the lifting rod, the top end of the spring is fixedly connected to the top plate, and the bottom end of the spring is fixedly connected to the bottom wall of the groove at the middle end of the lower pressure seat.

[0011] As a preferred solution of the CNC metal sheet bending machine described in the utility model, a receiving cavity is opened at the middle end of the upper end surface of the base, and the bottom end of the lifting rod extends vertically downward into the receiving cavity and is slidably connected with the lower pressure seat and the support platform.

[0012] The beneficial effects of the utility model are as follows: the end of the plate is placed between the two limiting rollers, and then the sliding sleeves are moved away from or closer to each other by turning the handle, so that the two limiting rollers are synchronously moved closer to or away from each other, and the limiting rollers have the function of clamping and limiting the plate, and because the limiting rollers can rotate on the connecting plate, the plate will not be subject to large friction when it is pushed laterally into the area to be processed, and when the other end of the plate is also inserted between the two limiting rollers of the other group, the plate is pressed down and bent by the set driving part. During the bending process of the plate, when the bending radius of the plate becomes smaller and the bending angle increases, the degree of deformation increases accordingly, and the positions of the two ends of the plate gradually move toward the inside of the bending center. The setting of the limiting rollers can control the movement trajectory of the two ends of the plate, and can prevent the plate from moving up and down, thereby preventing the two ends of the plate from bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the overall front view structure of the utility model.

[0016] Figure 3 Schematic diagram of the exploded structure of the limit assembly.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the lower pressure seat.

[0018] In the figure: 10, base; 101, accommodating chamber; 11, supporting platform; 12, lower die seat; 13, limiting rod; 14, lower pressure seat; 15, perforation; 16, positioning rod; 20, fixing frame; 21, two-way screw rod; 22, handle; 23, sliding sleeve; 24, protruding rod; 25, connecting plate; 26, limiting roller; 27, opening; 30, mounting frame; 31, cylinder; 40, lifting rod; 41, top plate; 42, spring. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] Example 1

[0024] Reference Figure 1-4, which is the first embodiment of the utility model, provides a CNC metal sheet bending machine, including a base 10, the upper end surface of the base 10 is fixedly connected to a support platform 11, the upper end surface of the support platform 11 is fixedly installed with a lower die seat 12, both sides of the upper end surface of the lower die seat 12 are fixedly connected to a limit rod 13, the top sliding sleeve of the limit rod 13 is provided with a lower pressing seat 14, the upper end surface of the lower pressing seat 14 is provided with a driving part, and both sides of the upper end surface of the base 10 are provided with a limit assembly, the limit assembly includes a fixed frame 20 fixedly connected to the base 10, the inner bottom wall of the fixed frame 20 is rotatably connected with a bidirectional screw rod 21, the top of the bidirectional screw rod 21 passes through the top wall of the fixed frame 20 and the end is fixedly connected with a handle 22, the upper and lower sides of the bidirectional screw rod 21 are threadedly sleeved with a sliding sleeve 23, the side walls of the sliding sleeve 23 are fixedly connected with a protruding rod 24, the ends of the protruding rod 24 away from the sliding sleeve 23 are fixedly connected with a connecting plate 25, and the connecting plate 25 is away from the protruding The side walls of the rod 24 are rotatably connected to the limiting rollers 26. During specific use, the end of the plate is first placed between the two limiting rollers 26, and then the handle 22 is rotated to make the sliding sleeves 23 move away from or closer to each other, so that the two limiting rollers 26 are synchronously moved closer or away. The limiting rollers 26 have the function of clamping and limiting the plate, and because the limiting rollers 26 can rotate on the connecting plate 25, the plate will not be subject to large friction when it is pushed horizontally into the area to be processed. After the other end of the plate is also inserted between the two limiting rollers 26 of the other group, the plate is pressed down and bent by the set driving part. During the bending process of the plate, when the bending radius of the plate becomes smaller and the bending angle increases, the degree of deformation increases accordingly, and the positions of the two ends of the plate gradually move toward the inside of the bending center. The setting of the limiting rollers 26 can control the movement trajectory of the two ends of the plate, and can prevent the plate from moving up and down.

[0025] As an implementation method in this embodiment, Figure 1 As shown, the driving part includes a mounting frame 30 fixedly connected to the base 10, and a cylinder 31 is fixedly installed on the mounting frame 30. The movable end of the cylinder 31 is fixedly connected to the upper end surface of the lower pressing seat 14. The mounting frame 30 is configured to fix the cylinder 31, and the piston end of the cylinder 31 drives the lower pressing seat 14 to rise and fall, so that the lower pressing seat 14 descends close to the lower die seat 12 to complete the downward pressing and bending operation.

[0026] As an implementation method in this embodiment, Figure 2 and Figure 3 As shown, an opening 27 is provided on the side wall of the fixed frame 20, and the protruding rod 24 extends to the outside of the fixed frame 20 through the opening 27. The opening 27 is the moving track of the protruding rod 24 and serves as a limit for the protruding rod 24, thereby preventing the sliding sleeve 23 from rotating synchronously during the rotation of the bidirectional screw rod 21.

[0027] As an implementation method in this embodiment, Figure 1 and Figure 4 As shown, through holes 15 are provided on both sides of the upper end surface of the lower press seat 14, and positioning rods 16 adapted to the through holes 15 are fixedly connected on both sides of the upper end surface of the lower mold seat 12. The top of the positioning rod 16 vertically penetrates the through holes 15 upward. The setting of the positioning rod 16 can prevent the plate from deviating left and right.

[0028] As an implementation method in this embodiment, Figure 2 As shown, two lifting rods 40 are vertically inserted in the groove at the middle end of the lower pressure seat 14, the top ends of the lifting rods 40 are fixedly connected to the top plate 41, the upper end surface of the top plate 41 is fixedly connected to the V-shaped mold, a spring 42 is wound around the outside of the lifting rod 40, the top end of the spring 42 is fixedly connected to the top plate 41, and the bottom end of the spring 42 is fixedly connected to the bottom wall of the groove at the middle end of the lower pressure seat 14. During specific use, if the lower pressure seat 14 directly contacts the V-shaped mold during the downward pressing process, the V-shaped mold will be subjected to greater pressure and impact force, which can alleviate the vibration and noise generated during the stamping process, reduce the impact force and stress generated, and reduce fatigue damage to the mold.

[0029] As an implementation method in this embodiment, Figure 2 As shown, a receiving cavity 101 is provided at the middle end of the upper end surface of the base 10, and the bottom end of the lifting rod 40 extends vertically downward into the receiving cavity 101 and is slidably connected to the lower pressure seat 14 and the support platform 11. When the lifting rod 40 descends, it will squeeze the spring 42, thereby achieving the effect of reducing the impact force.

[0030] Working principle: When in use, first place the end of the plate between the two limiting rollers 26, and then turn the handle 22 to make the sliding sleeves 23 move away from or closer to each other, so that the two limiting rollers 26 are synchronously moved closer or away. The limiting rollers 26 have the function of clamping and limiting the plate, and because the limiting rollers 26 can rotate on the connecting plate 25, the plate will not be subject to large friction when it is pushed horizontally into the area to be processed. After the other end of the plate is also inserted between the two limiting rollers 26 of the other group, the plate is pressed down and bent by the set driving part. During the bending process of the plate, when the bending radius of the plate becomes smaller and the bending angle increases, the degree of deformation increases accordingly, and the positions of the two ends of the plate gradually move toward the inside of the bending center. The setting of the limiting rollers 26 can control the movement trajectory of the two ends of the plate and prevent the plate from moving up and down.

[0031] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0032] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A CNC sheet metal bending machine, comprising a base (10), the upper end surface of the base (10) is fixedly connected to a support platform (11), the upper end surface of the support platform (11) is fixedly installed with a lower die seat (12), both sides of the upper end surface of the lower die seat (12) are fixedly connected to limit rods (13), the top of the limit rod (13) is provided with a lower press seat (14), and the upper end surface of the lower press seat (14) is provided with a driving part, characterized in that: Limiting components are arranged on both sides of the upper end surface of the base (10), and the limiting components include a fixing frame (20) fixedly connected to the base (10); a bidirectional screw rod (21) is rotatably connected to the inner bottom wall of the fixing frame (20); the top end of the bidirectional screw rod (21) passes through the top wall of the fixing frame (20) and the end is fixedly connected to a handle (22); the upper and lower sides of the bidirectional screw rod (21) are threadedly sleeved with a sliding sleeve (23); the side walls of the sliding sleeve (23) are fixedly connected to a protruding rod (24); the ends of the protruding rod (24) away from the sliding sleeve (23) are fixedly connected to a connecting plate (25); and the side walls of the connecting plate (25) away from the protruding rod (24) are rotatably connected to a limiting roller (26).

2. The CNC sheet metal bending machine according to claim 1, characterized in that: The driving part comprises a mounting frame (30) fixedly connected to the base (10), a cylinder (31) fixedly mounted on the mounting frame (30), and a movable end of the cylinder (31) fixedly connected to the upper end surface of the lower pressing seat (14).

3. The CNC sheet metal bending machine according to claim 2, characterized in that: An opening (27) is provided on the side wall of the fixing frame (20), and the protruding rod (24) passes through the opening (27) and extends to the outside of the fixing frame (20).

4. The CNC sheet metal bending machine according to claim 3, characterized in that: Both sides of the upper end surface of the lower pressing seat (14) are provided with through holes (15), and both sides of the upper end surface of the lower die seat (12) are fixedly connected with positioning rods (16) adapted to the through holes (15), and the top ends of the positioning rods (16) vertically penetrate the through holes (15) upwards.

5. The CNC sheet metal bending machine according to claim 4, characterized in that: Two lifting rods (40) are vertically inserted in the groove at the middle end of the lower pressure seat (14), and the top ends of the lifting rods (40) are fixedly connected to a top plate (41), and the upper end surface of the top plate (41) is fixedly connected to a V-shaped mold. A spring (42) is wound around the outer side of the lifting rod (40), and the top end of the spring (42) is fixedly connected to the top plate (41), and the bottom end of the spring (42) is fixedly connected to the bottom wall of the groove at the middle end of the lower pressure seat (14).

6. The CNC sheet metal bending machine according to claim 5, characterized in that: A receiving cavity (101) is provided at the middle end of the upper end surface of the base (10), and the bottom end of the lifting rod (40) extends vertically downward into the receiving cavity (101) and is slidably connected to the lower pressing seat (14) and the supporting platform (11).

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