A multi-section CNC bender for a kitchen cabinet door shell

Abstract

The utility model discloses a multi -sectional CNC bending machine for kitchen refrigerator door shell, including base, be equipped with bottom plate on the base, bottom plate top is equipped with lower mould, upper bending cutter is equipped with in lower mould upper portion, and the both sides of lower mould are equipped with material supporting plate and lower bending cutter respectively, adopt the multi -sectional CNC bending machine for kitchen refrigerator door shell of the utility model, and upper bending cutter is convenient to switch, and the production efficiency is improved to adapt assembly line production.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal production technology. Specifically, this utility model relates to a multi-section CNC bending machine for kitchen refrigerator door shells. Background Technology

[0002] In the current bending production of kitchen refrigerator doors, continuous bending with different blades is required to process them into a specified cross-section. During continuous bending, the bending blade is usually in a fixed position and can only be replaced by disassembly, which is cumbersome. The lower die on the existing bending machine is usually in a fixed position and cannot be matched with the production line, which affects production efficiency.

[0003] Utility model patent CN 203508668U, published on April 2, 2014, discloses a workpiece bending device, including a frame and a worktable mounted on the frame. A bending mechanism is arranged above the frame, and a lower template is mounted on the worktable. A cavity corresponding to the bending mechanism is formed on the lower template, and a pad for supporting the product to be processed is arranged on the upper surface of the lower template; the size of the pad matches the size of the lower template. However, this workpiece bending device does not solve the aforementioned technical problem. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a multi-section CNC bending machine for kitchen freezer doors that allows for convenient switching of the upper bending blade, is suitable for assembly line production, and improves production efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] The multi-section CNC bending machine for kitchen freezer door shells includes a base, a base plate on the base, a lower die at the top of the base plate, an upper bending knife above the lower die, and a material support plate and a lower bending knife on both sides of the lower die.

[0007] The base plate is connected to a second mounting seat, and the lower folding blade is mounted on the second mounting seat; a mounting frame is provided above the base plate, and a horizontal guide rail is provided at the bottom of the mounting frame. The top of the first mounting seat cooperates with the horizontal guide rail. There are two upper folding blades, and the two upper folding blades are arranged side by side.

[0008] The base has a support frame on one side of the base plate, and the material support plate is located at the top of the support frame. The material support plate is at the same height as the lower mold. The base has a connecting frame at the end. The connecting frame has an L-shaped structure. The top of the connecting frame has a pressing cylinder. The pressing cylinder is located above the material support plate. The piston rod of the pressing cylinder is connected to a pressing block.

[0009] The base is provided with a clearance guide rail, and the bottom of the base plate cooperates with the clearance guide rail.

[0010] The upper folding blade is bolted to the bottom of the first mounting base; the base plate has an L-shaped cross-section, the top of the base plate is provided with a first mounting groove, the bottom of the lower mold has a first protrusion that mates with the first mounting groove, the side of the second mounting base is provided with a second mounting groove, and the side of the lower folding blade is provided with a second protrusion that mates with the second mounting groove.

[0011] An auxiliary material support plate is provided on the outer side of the base plate.

[0012] Both the first mounting base and the second mounting base are connected to a lead screw drive module, which includes a servo motor, a synchronous belt, a lead screw, and a lead screw nut.

[0013] The technical advantages of this utility model are as follows: The multi-section CNC bending machine for kitchen refrigerator door shells is simple in design. The upper bending blades are arranged in parallel, which facilitates the blade switching process. The lower die can move on the base plate with the base plate, realizing matching with the production line and improving production efficiency. Through the use of upper and lower bending blades, and the fact that the upper and lower bending blades and the lower die can all be moved, the applicability of the bending machine is improved. In addition, a clamping cylinder and a material support plate are set to clamp and support the workpiece, ensuring the bending and forming quality of the workpiece. Attached Figure Description

[0014] This manual includes the following figures, which illustrate the following:

[0015] Figure 1 This is a structural schematic diagram of the bending machine of this utility model;

[0016] Figure 2 This is a rear view of the bending machine of this utility model;

[0017] Figure 3 yes Figure 2 Schematic diagram of section AA;

[0018] Figure 4 yes Figure 3 A magnified view of a portion of region B;

[0019] Figure 5 This is a schematic diagram of the installation of the lower mold of this utility model;

[0020] Figure 6 This is a schematic diagram of the installation of the folding blade of this utility model;

[0021] Figure 7 This is a schematic diagram of the installation of the downward folding blade of this utility model.

[0022] The components in the diagram are labeled as follows: 1. Base; 2. Base plate; 3. Mounting bracket; 4. Upper folding blade; 5. Lower folding blade; 6. Lower mold; 7. First mounting seat; 8. Second mounting seat; 9. Material support plate; 10. Horizontal guide rail; 11. Clearance guide rail; 12. Connecting bolt; 13. Support frame; 14. Connecting frame; 15. Clamping cylinder; 16. Pressure block; 17. First protrusion; 18. First mounting groove; 19. Second protrusion; 20. Second mounting groove; 21. Auxiliary material support plate; 22. Servo motor; 23. Synchronous belt; 24. Lead screw; 25. Nut. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this invention, and to facilitate its implementation.

[0024] like Figures 1 to 3 As shown, the multi-section CNC bending machine for kitchen freezer door shells includes a base 1, a base plate 2 on the base 1, a lower die 6 at the top of the base plate 2, an upper bending knife 4 above the lower die 6, and a material support plate 9 and a lower bending knife 5 on both sides of the lower die 6.

[0025] The base 1 is fixed in position, while the base plate 2 can move on the base 1. When the bending machine starts, the workpiece is placed on the support plate 9, and the lower die 6 supports the edge of the workpiece. Under the extrusion action of the upper folding blade 4 and the lower folding blade 5, the workpiece is shaped to the specified cross-sectional shape. The upper folding blade 4 applies force to the top of the workpiece, and the lower folding blade 5 applies force to the top of the workpiece. This design ensures that both the top and bottom of the workpiece are subjected to extrusion force, which helps to reduce the springback of the workpiece after bending, ensures the product forming effect, and improves product quality. By using the upper folding blade 4 and the lower folding blade 5 in combination, complex cross-sectional shapes can be processed.

[0026] like Figure 3 and Figure 4 As shown, the base plate 2 is connected to a second mounting seat 8, and the lower folding blade 5 is mounted on the second mounting seat 8. A mounting frame 3 is located above the base plate 2, and a horizontal guide rail 10 is located at the bottom of the mounting frame 3. The top of the first mounting seat 7 engages with the horizontal guide rail 10. Two upper folding blades 4 are provided, arranged side-by-side. The first mounting seat 7 moves via a screw drive, and the horizontal guide rail 10 guides the movement, allowing for the replacement of the two upper folding blades 4, thus achieving blade switching. This meets the blade switching requirements during different bending processes or continuous bending of sheet metal. With this structure, the upper folding blade 4 only needs to be moved horizontally to adjust its position to achieve blade replacement, eliminating the disassembly process and the need for complex blade changing components on the bending machine, reducing equipment application costs.

[0027] A support frame 13 is provided on one side of the base plate 2 on the base 1. A material support plate 9 is located at the top of the support frame 13, and the height of the material support plate 9 is the same as that of the lower mold 6. A connecting frame 14 is provided at the end of the base 1. The connecting frame 14 has an L-shaped structure, and a clamping cylinder 15 is provided at the top of the connecting frame 14. The clamping cylinder 15 is located above the material support plate 9, and the piston rod of the clamping cylinder 15 is connected to a pressure block 16. In the above structure, the pressure block 16 clamps the workpiece by driving the clamping cylinder 15, preventing the workpiece from warping when the bending knife applies force, thus ensuring the forming quality of the workpiece.

[0028] The base 1 is equipped with a relief guide rail 11, and the bottom of the base plate 2 cooperates with the relief guide rail 11. The base plate 2 moves on the relief guide rail 11, so that the lower die 6 of the bending machine can be supported at the designated position of the workpiece, which can meet the processing of workpieces of different widths. Therefore, the bending machine can be matched with the production line to improve production efficiency. The movement of the base plate 2 is also achieved by a motor and a lead screw drive.

[0029] like Figures 5 to 7 As shown, the upper folding blade 4 is bolted to the bottom of the first mounting base 7; the base plate 2 has an L-shaped cross-section, with a first mounting groove 18 at the top and a first protrusion 17 at the bottom of the lower mold 6 that mates with the first mounting groove 18; the second mounting base 8 has a second mounting groove 20 on its side, and the lower folding blade 5 has a second protrusion 19 on its side that mates with the second mounting groove 20. The upper folding blade 4 is connected to the first mounting base 7 by connecting bolts 12, facilitating disassembly and allowing for timely maintenance and replacement, as well as the replacement of the folding blade with a corresponding specification according to the production requirements of the workpiece shell; the lower mold 6 and the lower folding blade 5 are also bolted together, facilitating replacement with the corresponding model according to production requirements. The above structure, with the cooperation of protrusions and mounting grooves, improves the installation accuracy of the upper folding blade 4, the lower folding blade 5, and the lower mold 6. The cooperation of protrusions and mounting grooves plays a positioning role in the assembly process of the above structure. Among them, the bottom of the upper folding blade 4 and the top of the lower folding blade 5 are inclined structures, and the top and bottom surfaces of the lower mold 6 are also correspondingly set as inclined structures. This design facilitates the formation of a cross-sectional shape with an inclined angle for the workpiece.

[0030] like Figure 4 As shown, an auxiliary support plate 21 is provided on the outer side of the base plate 2. The auxiliary support plate 21 is located between the support plate 9 and the lower die 6, and plays an auxiliary supporting role for the middle part of the workpiece, so as to avoid bending deformation of other parts of the workpiece during the bending process.

[0031] like Figure 3As shown, both the first mounting base 7 and the second mounting base 8 are connected to a lead screw drive module. The lead screw drive module includes a servo motor 22, a synchronous belt 23, a lead screw 24, and a lead screw nut 25. Using the lead screw drive module provides reliable positional accuracy, meeting the precision requirements of mold processing. The lead screw drive module includes a vertical lead screw drive module and a horizontal lead screw drive module, thereby realizing the planar movement of the first mounting base 7 and the second mounting base 8. The lead screw drive module uses the servo motor 22 as the power source. Each motor drives two driven pulleys through the active synchronous belt 23. Each driven pulley drives a set of lead screw drive modules. The first mounting base 7 and the second mounting base 8 are both fixed to the lead screw nut 25 of the lead screw drive module, thereby realizing the positional movement of the upper folding blade 4 and the lower folding blade 5. Both the first mounting base 7 and the second mounting base 8 are equipped with a guide rail slider structure combination to reduce movement resistance. The aforementioned lead screw drive module and synchronous belt 23 transmission mechanism are both existing commonly used technologies.

[0032] The operation process is as follows: According to the width of the workpiece, the base plate 2 is moved on the clearance guide rail 11 so that the lower die 6 matches the width of the workpiece. After the workpiece is conveyed to the material support plate 9 by the production line, the clamping cylinder 15 clamps the workpiece by the drive block 16. The lower die 6 supports the bottom of the workpiece. The equipment is started and the positions of the upper folding knife 4 and the lower folding knife 5 are adjusted through the screw transmission module to perform the bending operation. If the knife needs to be changed during the operation, the horizontal position of the first mounting seat 7 can be adjusted through the horizontal screw transmission module. After the workpiece is bent, all mechanisms are reset and the next workpiece bending process can be carried out.

[0033] This multi-section CNC bending machine for kitchen freezer doors features a simple design. The upper bending blades 4 are arranged in parallel, facilitating blade switching. The lower die 6 can move on the base 1 along with the base plate 2, achieving compatibility with the production line and improving production efficiency. The use of the upper and lower bending blades 4 and 5, and the fact that all three blades (upper, lower, and lower) and the lower die 6) can be moved, expands the machine's applicability. A clamping cylinder 15 and a material support plate 9 are also included to clamp and support the workpiece, ensuring the bending quality of the workpiece.

[0034] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A multi-section CNC bending machine for kitchen freezer door shells, characterized in that: Includes a base (1), on which a base plate (2) is provided, a lower mold (6) is provided at the top of the base plate (2), an upper folding knife (4) is provided above the lower mold (6), and a material support plate (9) and a lower folding knife (5) are respectively provided on both sides of the lower mold (6); a second mounting seat (8) is connected to the base plate (2), and the lower folding knife (5) is provided on the second mounting seat (8); a mounting frame (3) is provided above the base plate (2), a first mounting seat (7) is provided at the bottom of the mounting frame (3), and a horizontal guide rail (10) is provided between the bottom of the mounting frame (3) and the first mounting seat (7), and the top of the first mounting seat (7) is provided with a horizontal guide rail (10). The part is in cooperation with the horizontal guide rail (10). There are two upper folding blades (4), and the two upper folding blades (4) are arranged side by side. A support frame (13) is provided on the base (1) on one side of the bottom plate (2). The material support plate (9) is located at the top of the support frame (13). The material support plate (9) is at the same height as the lower mold (6). A connecting frame (14) is provided at the end of the base (1). The connecting frame (14) is an L-shaped structure. A pressing cylinder (15) is provided at the top of the connecting frame (14). The pressing cylinder (15) is located above the material support plate (9). The piston rod of the pressing cylinder (15) is connected to a pressing block (16).

2. The multi-section CNC bending machine for kitchen freezer door shells according to claim 1, characterized in that: The base (1) is provided with a clearance guide rail (11), and the bottom of the base plate (2) is engaged with the clearance guide rail (11).

3. The multi-section CNC bending machine for kitchen freezer door shells according to claim 1 or 2, characterized in that: The upper folding blade (4) is bolted to the bottom of the first mounting base (7); the bottom plate (2) has an L-shaped cross section, the top of the bottom plate (2) is provided with a first mounting groove (18), the bottom end of the lower mold (6) is fitted with a first protrusion (17) that fits with the first mounting groove (18), the side of the second mounting base (8) is provided with a second mounting groove (20), and the side of the lower folding blade (5) is provided with a second protrusion (19) that fits with the second mounting groove (20).

4. The multi-section CNC bending machine for kitchen freezer door shells according to claim 1, characterized in that: An auxiliary material support plate (21) is provided on the outer side of the base plate (2).

5. The multi-section CNC bending machine for kitchen freezer door shells according to claim 2, characterized in that: The first mounting base (7) and the second mounting base (8) are both connected to a lead screw drive module, which includes a servo motor (22), a synchronous belt (23), a lead screw (24) and a lead screw nut (25).

Images