Bending die capable of adjusting plate thickness
By designing an adjustable plate thickness bending die and utilizing the combination of stepped grooves and cylindrical guide blocks, the problem of die interference in the processing of U-shaped parts by existing bending machines was solved, achieving precise bending and forming of 10-15mm steel plates, improving production efficiency and reducing die costs.
Patent Information
- Application Number
- CN202423307197.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing bending machines, when processing U-shaped parts, suffer from insufficient bending distance between two bending operations due to interference from the upper die volume, making it impossible to form parts in one go. Furthermore, they lack bending force for thicker steel plates, affecting equipment lifespan or requiring annealing treatment, resulting in low production efficiency.
Design an adjustable plate thickness bending die. By installing upper and lower dies on a hydraulic press, and using stepped grooves and cylindrical guide blocks, one-time forming can be achieved. It is suitable for U-shaped structure processing of 10-15mm steel plates. The die includes the precise matching of components such as upper die base, upper die connecting plate, lower die base, die raising block and forming lower die.
It enables precise bending and forming of 10-15mm steel plates, reduces mold costs, improves production efficiency, and avoids the hassle of equipment wear and annealing.
Smart Images
Figure CN223629275U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to steel plate bending technical field, concretely relates to a bending die of adjustable plate thickness can accurately bend 10-15mm steel plate into U type structure. BACKGROUND
[0002] The bending machine currently adopted needs to limit the distance of twice bending when bending due to the volume interference of the upper die, and cannot be formed because of insufficient distance of twice bending many times.
[0003] In the process of realizing the utility model, the inventor finds that:
[0004] The hydraulic bending machine is used more in production and is used for bending the plate with thickness of 1-3mm, and the numerical control bending machine is mainly used for relatively thin plate, but due to the limited torque, the bending force is not enough for the relatively thick plate such as 10-15mm steel plate, and the equipment service life is seriously affected, and in this case, the annealing and bending mode is tried, but after annealing, the hardness of the steel plate is reduced, although the bending is easy, but the product strength is affected and time and effort are consumed. SUMMARY
[0005] In order to solve the problems in the prior art, the utility model provides a bending die of adjustable plate thickness, which can be installed on the existing hydraulic machine, and once formed after the upper and lower dies are closed, has the characteristics of simple installation, fast and accurate bending.
[0006] Therefore, the technical scheme of the utility model is as follows: a bending die of adjustable plate thickness, comprising an upper die seat arranged on the upper plate of a hydraulic machine and a lower die seat arranged on the lower plate of the hydraulic machine, characterized in that: the bottom of the upper die seat is fixed with an upper die connecting plate, the lower end of the upper die connecting plate is detachably fixed with an upper die pressing block,
[0007] The surface of the lower die seat is screw connected with a die heightening block, the top of the die heightening block is fixed with a forming lower die, the surface of the forming lower die extends inwardly and is provided with a cavity, step grooves are arranged on the two sides of the cavity, cylindrical guide blocks are placed on the step faces of the step grooves, and the gap between the two cylindrical guide blocks is adapted to the width of the U-shaped bending plate to be processed.
[0008] As a preferred, the width of the upper die connecting plate is less than that of the upper die pressing block, the upper die connecting plate is provided with upper die top screws on the two sides, the width of the two sides of the upper die top screws is consistent with the width of the inner cavity of the U-shaped bending plate, and the opening end of the U-shaped bending plate can be effectively prevented from deforming.
[0009] As preferred, the cavity bottom of the forming lower die is provided with a demolding auxiliary plate, the demolding auxiliary plate is in sliding connection with the cavity, the cavity bottom is provided with a plurality of downward extending spring installation cavities, and a compression spring is arranged in each spring installation cavity; the purpose is to prevent the workpiece from being stuck in the lower die cavity.
[0010] As preferred, the bottom surface of the demolding auxiliary plate is provided with a spring limiting block corresponding to each spring installation cavity, and the spring limiting block is inserted into the compression spring; the spring limiting block is used for fixing the demolding auxiliary plate and avoiding displacement of the demolding auxiliary plate.
[0011] As preferred, the upper part of the two sides of the forming lower die is provided with a demolding connecting plate, and the top of the two demolding connecting plates is screw-connected with oppositely arranged demolding plates; the demolding plates are used for limiting the upward movement of the U-shaped bending plate along with the upward movement of the upper die pressing block, and facilitating demolding.
[0012] Advantages: compared with the prior art, the step groove is arranged on the upper side of the cavity of the forming lower die, the cylindrical guide block is placed on the step groove, the width of the U-shaped bending plate after forming is consistent with the gap between the two cylindrical guide blocks, the mold does not need to be adjusted under the condition that the inner profile of the U-shaped bending plate is unchanged, and the U-shaped bending plate with a corresponding size can be processed only by replacing the cylindrical guide block with different specifications. Through repeated tests, the steel plate with a thickness of 10-15 mm can be accurately bent into a U-shaped structure, the cost of multiple molds is reduced, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is the structural diagram of the utility model.
[0014] Figure 2 is the structural diagram of the upper die seat of the utility model.
[0015] Figure 3 is the structural diagram of the upper die connecting plate of the utility model.
[0016] Figure 4 is the structural diagram of the upper die pressing block of the utility model.
[0017] Figure 5 is the structural diagram of the forming lower die of the utility model.
[0018] Figure 6 is the structural diagram of the mold heightening block of the utility model.
[0019] Figure 7 is the structural diagram of the lower die seat of the utility model.
[0020] Figure 8 is the structural diagram of the demolding plate of the utility model.
[0021] Figure 9It is the structure diagram of the demolding connecting plate of the utility model.
[0022] Figure 10 It is the structure diagram of the mold taking auxiliary plate of the utility model.
[0023] Figure 11 It is the structure diagram of the spring limiting block of the utility model.
[0024] Figure 12 It is the structure diagram of the cylindrical guide block of the utility model.
[0025] Figure 13 It is the structure diagram of the compression spring of the utility model.
[0026] As shown in the figure: 1, the upper die seat; 2, the upper die connecting plate; 3, the upper die top wire; 4, the demolding plate; 5, the upper die pressing block; 6, the demolding connecting plate; 7, the cylindrical guide block; 8, the forming lower die; 9, the mold taking auxiliary plate; 10, the spring limiting block; 11, the compression spring; 12, the mold heightening block; 13, the lower die seat; N, the U-shaped bending plate. DETAILED DESCRIPTION
[0027] The technical scheme of the utility model will be described clearly and completely in connection with the drawings, but the embodiment should not be understood as limiting the utility model.
[0028] The utility model discloses as shown in the figure: Figures 1 to 13
[0029] A bending die capable of adjusting plate thickness, comprising an upper die seat 1 arranged on the upper plate of a hydraulic machine and a lower die seat 13 arranged on the lower plate of the hydraulic machine, wherein:
[0030] The bottom of the upper die seat 1 is fixed with an upper die connecting plate 2, and the lower end of the upper die connecting plate is detachably fixed with an upper die pressing block 5,
[0031] The surface of the lower die seat 13 is screw-connected with a mold heightening block 12, the mold heightening block is mainly arranged for cooperating with the stroke of the hydraulic machine, the top of the mold heightening block is fixed with a forming lower die 8, the forming lower die is inwardly extended with a cavity on the surface, step grooves are arranged on both sides of the cavity, cylindrical guide blocks 7 are placed on the step faces of the step grooves, and the gap between the two cylindrical guide blocks is adapted to the width of the U-shaped bending plate N to be processed.
[0032] In the embodiment, the width of the upper die connecting plate 2 is less than that of the upper die pressing block 5, the upper die connecting plate is provided with upper die top wires 3 on both sides, and the width of the two upper die top wires on the opposite sides is consistent with the width of the inner cavity of the U-shaped bending plate; the opening end of the U-shaped bending plate can be effectively prevented from deforming.
[0033] In the embodiment, the cavity bottom of the forming lower die 8 is provided with a demolding auxiliary plate 9, the demolding auxiliary plate is in sliding connection with the cavity, the cavity bottom is provided with a plurality of downward extending spring installation cavities, and the spring installation cavities are provided with compression springs 11; the purpose is to prevent the workpiece from being clamped in the lower die cavity.
[0034] In the embodiment, the bottom surface of the demolding auxiliary plate 9 is provided with spring limiting blocks 10 corresponding to the spring installation cavities, the spring limiting blocks are inserted into the middle cavities of the compression springs; the spring limiting blocks are used for fixing the demolding auxiliary plate and avoiding displacement of the demolding auxiliary plate.
[0035] In the embodiment, the upper sides of the two sides of the forming lower die 8 are respectively provided with vertically upward demolding connecting plates 6, and the top portions of the two demolding connecting plates are screw-connected with oppositely arranged demolding plates 4; the demolding plates are used for limiting the U-shaped bending plate from moving upward along with the upper die pressing block and facilitating demolding.
[0036] Working principle of the utility model:
[0037] In use, the upper die seat 1 is fixed on the upper plate of a hydraulic machine, the upper die connecting plate 2 is connected with the upper die seat 1 through screws, and the upper die pressing block 3 is fixed on the upper die connecting plate 2 through bolts, so that the upper die pressing block 5 can be replaced in the case that the inner profile of the workpiece changes;
[0038] The lower die seat 13 is fixed on the lower plate of the hydraulic machine, the die heightening block 12 is connected with the lower die seat 13 through screws, the forming lower die 8 is fixed on the lower die heightening block 12 through bolts, 4-6 die springs are placed in the spring installation cavities of the forming lower die 8, then the demolding auxiliary plate 9 is placed above, the cylindrical guide block 9 is placed on the step surface of the step groove, and the gap of the cylindrical guide block 8 can be adjusted according to the width of the workpiece.
[0039] Firstly, the workpiece (steel plate) is placed above the forming lower die 8, the upper plate of the hydraulic machine is lowered to drive the upper die pressing block 5 to move downward, the workpiece is bent downward along with the movement of the upper die pressing block, the workpiece gradually enters the cavity of the forming lower die 8, and the workpiece is bent into the required shape in the cavity formed by the upper die pressing block and the forming lower die along with the shape of the upper die pressing block;
[0040] After the bending is completed, the upper die pressing block is returned, the workpiece is pulled out along with the upper die pressing block, touches the demolding plate and falls off, and then the workpiece can be directly taken out.
[0041] The parts not described in detail in the specification are the known technologies in the art.
[0042] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. An adjustable thickness bending die, comprising an upper die seat arranged on an upper plate of a hydraulic press and a lower die seat arranged on a lower plate of the hydraulic press, characterized in that: The bottom of the upper die seat is fixed with an upper die connecting plate, and the lower end of the upper die connecting plate is detachably fixed with an upper die pressing block, The surface of the lower die seat is screw-connected with a die heightening block, the top of the die heightening block is fixed with a forming lower die, the surface of the forming lower die extends inwardly and is provided with a cavity, step grooves are respectively arranged on the two sides of the cavity, cylindrical guide blocks are placed on the step surfaces of the step grooves, and the gap between the two cylindrical guide blocks is adapted to the width of the U-shaped bending plate to be processed.
2. The bend die with adjustable plate thickness according to claim 1, characterized in that: The width of the upper die connecting plate is smaller than that of the upper die pressing block, and upper die jacks are arranged on the two sides of the upper die connecting plate, and the width of the two upper die jacks opposite to each other is consistent with the width of the inner cavity of the U-shaped bending plate.
3. The bending die with adjustable plate thickness according to claim 1 or 2, characterized in that: The bottom of the cavity of the forming lower die is provided with a die taking auxiliary plate, the die taking auxiliary plate is in sliding connection with the cavity, the bottom of the cavity is provided with a plurality of downwardly extending spring mounting cavities, and compression springs are arranged in the spring mounting cavities.
4. The bend die with adjustable plate thickness of claim 3, wherein: Spring limiting blocks are respectively arranged at the positions corresponding to the spring mounting cavities on the bottom surface of the die taking auxiliary plate, and the spring limiting blocks are inserted into the compression springs.
5. The bending die with adjustable plate thickness according to claim 1 or 2 or 4, characterized in that: The upper portions of the two sides of the forming lower die are provided with die stripping connecting plates, and the top portions of the two die stripping connecting plates are screw-connected with oppositely arranged die stripping plates.