A jig for solving the increment generated by soft cable bending
By designing a fixture that includes a length-limiting block, the problem of multi-die stamping caused by foil bending was solved, realizing efficient pre-bending and stamping of foil, reducing production costs and defect rates, and improving production efficiency and hole position consistency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INTERPLEX SUZHOU PRECISION ENG LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-29
AI Technical Summary
In the production of flexible foil, the foil sheets are bent to different length increments, requiring multiple molds for stamping, which leads to high production costs, low efficiency and high defect rate.
Design a fixture comprising a base plate, a positioning structure, a sliding structure, and a bending mechanism. By limiting the bending increment of the foil sheet through a length limiting block, and combining the sliding structure and the bending structure, pre-bending and stamping of the foil sheet can be achieved, reducing the types of molds and ensuring the consistency of hole positions.
It reduced production costs, improved production efficiency, reduced product defect rates, simplified operating procedures, and enhanced both production efficiency and product quality.
Smart Images
Figure CN224294357U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flexible sheet bending technology, and in particular to a fixture for solving the problem of increased bending volume in flexible sheet bending. Background Technology
[0002] In the production of flexible foil, the product structure is formed by diffusion welding and bending of multiple layers of metal foil. Therefore, the increment needs to be calculated based on the number of bends to determine the length of the bent section. Products of various sizes are then stamped according to the required length, arranged in order of size based on the bending direction, and then welded. However, because the bending results in different length increments for each foil layer, different stamping dies are required for different foil lengths during the stamping process, significantly increasing production costs. Furthermore, different types of dies require the same number of stamping presses, further escalating production costs. The need for multiple dies leads to high press occupancy rates and can interfere with the production time of other products. Additionally, as the variety of foil types increases, the production cost using this method becomes even higher, and errors in the manual placement of foil products can increase the defect rate. Utility Model Content
[0003] The purpose of this invention is to provide a fixture that solves the problem of increased length caused by bending of foil sheets. This addresses the issue of requiring multiple molds for stamping due to varying length increments caused by bending, which leads to increased production costs, low production efficiency, and high product defect rates. Through a rationally designed fixture structure, the length increment caused by bending each layer of foil can be controlled, allowing the foil to be pre-bent and stamped on the fixture. This fixture is applicable to various types of foil, reduces the number of stamping molds, lowers production costs, and improves production efficiency and product quality.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0005] A fixture for solving the problem of increased bending volume caused by flexible sheet metal bending, comprising:
[0006] A base plate for supporting the overall structure of the fixture, at least one positioning structure, at least one sliding structure, and at least one bending mechanism;
[0007] The positioning structure, sliding structure, and bending mechanism are all mounted on the base plate.
[0008] The bending mechanism is located between the positioning structure and the sliding structure;
[0009] The sliding structure includes a slider that slides along the base plate, and a length limiting block is provided on the slider to limit the incremental length of the foil.
[0010] Preferably, the positioning structure includes a positioning base fixed on the base plate, and a detachable positioning cover plate is provided on the positioning base.
[0011] Preferably, the sliding structure further includes side limiting blocks located on both sides of the slider; and upper limiting blocks are provided on the side limiting blocks, with the upper limiting blocks located above the slider.
[0012] Preferably, a product pressure plate is mounted on the slider via a positioning pin, and the length limiting block is located at the rear end of the product pressure plate and fixed on the slider.
[0013] Preferably, the bending mechanism includes a push rod support and a push rod, with a push rod groove provided on the push rod support and the push rod located in the push rod groove.
[0014] Preferably, a limit block is provided between the slider and the top rod mechanism.
[0015] Preferably, the length of the limiting block is determined at least according to the bending angle of the foil.
[0016] The beneficial effects of this utility model are:
[0017] (1) This utility model discloses a fixture for solving the problem of incremental length increase during bending of soft foil sheets. By setting a length limiting block, the incremental length increase generated by bending each layer of foil is limited. The bending of the foil is achieved in conjunction with the sliding structure and the bending structure. By setting a length limiting block on the slider, the slider moves to make the length limiting block close to one end of the foil. The size of the length limiting block can be determined according to the length increment generated after the foil is bent. Multiple length limiting blocks can be made for multiple layers of foil, so as to minimize the cost in the material preparation stage and accurately control the bending quality. There will be no redundant increment that would damage the bending quality. At the same time, holes are reserved on the product pressure plate and the slider to facilitate punching the foil with a punch. Combined with the function of the length limiting block, the punching position on the foil can be determined. After punching, the hole position of each layer of foil can be kept consistent. It is not necessary to use different molds to punch foils of different lengths. This solves the problem in the prior art that multiple molds are needed to punch foils with different length increments due to bending, which leads to high production costs, low production efficiency and product defect rate.
[0018] (2) The present invention discloses a fixture for solving the problem of increased bending of soft foil. It adopts a modular design and can reasonably arrange the positioning structure, sliding structure, bending mechanism and other components according to the number of foils that need to be bent. The overall structure is simple, easy to disassemble and maintain, and has low manufacturing cost. Moreover, the fixture is more flexible in use. Compared with the existing method, it simplifies the production process and improves production efficiency. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the structure of a fixture for solving the problem of increased volume caused by bending of soft sheet metal according to this utility model;
[0020] Figure 2 This is a schematic diagram of the fixture in the preferred embodiment;
[0021] Figure 3 This is a schematic diagram of the fixture from another angle in the preferred embodiment;
[0022] Figure 4 This is a schematic diagram of placing the foil sheet on the fixture in a preferred embodiment;
[0023] The components in the attached diagram are labeled as follows:
[0024] 1. Product pressure plate; 2. Length limiting block; 3. Upper limit block; 4. Side limit block; 5. Slider; 5-1. Threaded hole; 5-2. Positioning hole; 5-3. Punching hole; 6. Positioning cover plate; 7. Positioning base; 8. Base plate; 9. Top rod; 10. Top rod groove; 11. Limiting block; 12. Top rod support. Detailed Implementation
[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0026] Example:
[0027] This embodiment introduces a fixture for solving the problem of increased volume caused by bending of flexible sheet metal.
[0028] like Figure 1-3 As shown, Figure 1 This is a structural schematic diagram of a fixture for solving the problem of increased volume caused by bending of flexible sheet metal, according to this utility model. Figure 2 This is a schematic diagram of the fixture in the preferred embodiment. Figure 3 This is a schematic diagram of the fixture from another angle in the preferred embodiment.
[0029] A fixture for solving the problem of incremental bending of soft sheet metal includes: a base plate 8, and a positioning structure, a sliding structure, and a bending mechanism located on the base plate 8, wherein the bending mechanism is located between the positioning structure and the sliding structure.
[0030] Base plate 8 is used to support the overall structure of the fixture;
[0031] At least one positioning structure is provided to fix the foil and restrict its movement.
[0032] At least one sliding structure and at least one bending mechanism are provided; the number of sliding structures and bending mechanisms are set in a corresponding manner. The fixture provided by this utility model can determine the number of sliding structures based on the number of bends in the target product. For example, in a preferred embodiment, if the product has two bends, then two sliding structures and two bending mechanisms are required.
[0033] In a preferred embodiment, the positioning structure includes a positioning base 7 fixed on the base plate 8, and a detachable positioning cover plate 6 is provided on the positioning base 7. This structure will tightly press the foil, and the holes reserved in the design of the foil will be fixed with the positioning cover plate and the positioning base by pins, thereby achieving the purpose of limiting the position of the foil.
[0034] In a preferred embodiment, the sliding structure includes a slider 5 that slides along the base plate 8 and side limiting blocks 4. The side limiting blocks 4 are located on both sides of the slider 5, forming a sliding track. An upper limiting block 3 is provided on the side limiting blocks 4, and the upper limiting block 3 is locked onto the side limiting blocks 4 by pins and screws. The upper limiting block 3 is located above the slider 5. The function of the side limiting blocks is to guide the sliding trajectory of the slider. The function of the upper limiting blocks is to prevent the slider from disengaging from the track.
[0035] In a preferred embodiment, a product pressure plate 1 and a length limiting block 2 are mounted on the slider 5 via positioning pins. The product pressure block 1 is located at the front end of the slider 5. Threaded holes 5-1 and positioning holes 5-2 for fixing are provided at corresponding positions on the product pressure plate 1 and the slider 5. During use, the foil is placed on the slider, and bolts are used to fix the product pressure plate to the slider. The product pressure block presses the foil tightly against the slider, and then the positioning pins further limit the movement of the foil to prevent displacement. The length limiting block 2 is located at the rear end of the product pressure plate 1. The length limiting block 2 moves with the slider 1 and is in close contact with one end of the foil, thus limiting the bending increment of the foil during bending. Simultaneously, punching holes 5-3 are pre-drilled on the product pressure plate 1, and corresponding holes are also pre-drilled on the slider 5.
[0036] In this invention, the fixture can directly punch holes in the foil without the need for an additional punch press. The punch passes through the holes in the product pressure plate 1 and through the foil to create holes, facilitating positioning for subsequent diffusion welding, improving production efficiency, and saving costs.
[0037] To improve bending accuracy, a limit block 11 is provided between the slider 5 and the push rod mechanism. During operation, the slider 5 is pushed forward so that it is in close contact with the limit block 11, thus ensuring that each foil sheet reaches the relative length required for bending.
[0038] In a preferred embodiment, the bending mechanism includes a push rod support 12 and a push rod 9. A push rod groove 10 is provided on the push rod support 12, and the push rod 9 is located within the push rod groove 10. Before inserting the foil, the push rod 9 can be removed from the push rod groove 10. During use, according to the bending direction, the push rod 9 is inserted into the push rod groove 10, ensuring that the push rod 9 is positioned on the same side as the bending direction. Then, the push rod is pulled up / down accordingly to cause the foil to deform in the same direction as the bending, achieving pre-bending for subsequent steps. Using a push rod ensures smooth pre-bending of the product, and this step also ensures bending quality.
[0039] The structures in this utility model can all be modularly designed, making them easy to assemble and disassemble. They can also be designed and laid out according to different types of products and bending requirements, increasing the flexibility of the fixture and making it more convenient to operate compared to existing processing methods.
[0040] In this invention, the length limiting block is a replaceable design, allowing for the manufacture of length limiting blocks of different sizes to accommodate foil sheets with varying length increments. The length of the length limiting block is determined at least by the foil bending angle. The design of the length limiting block is to control the foil bending increment, ensuring that after bending, multiple layers of foil, after punching, achieve theoretically identical positioning holes. The length of the length limiting block is determined based on the length increment of each foil layer; during the bending process, only the corresponding length limiting block needs to be replaced for the bending increment.
[0041] To facilitate understanding, we explain the determination of the length of this length-limiting block as follows:
[0042] Since the flexible packing unit is composed of multiple layers of foil, when the packing unit is bent, the length of each layer of foil changes due to the bending increment. In this embodiment, we propose the following method to calculate the length increment of each layer of foil caused by bending.
[0043] Assume the radius of each foil layer bent from the inside out is R1, R2, R3...R n If the bending angle of each foil is the same, θ, then the arc length of each foil layer in the bending segment can be calculated as S1 = 2πR1θ / 360°, S2 = 2πR2θ / 360°, S3 = 2πR3θ / 360°...S n =2πR n θ / 360°.
[0044] Furthermore, the difference in arc length between two adjacent foil layers is ΔS = S n -S n-1 =2πθ(R) n -R n-1 ) / 360°. This arc length difference is the length increment produced after each foil layer is bent, and this length increment determines the length of the limiting block.
[0045] Since each foil layer is known to be of uniform thickness and tightly bonded together, R... n -R n-1 Since k is a constant value, ΔS = 2πθk / 360° is a constant.
[0046] Therefore, when the bending angle and foil thickness are constant, the arc length difference ΔS between adjacent foil layers is a constant value. That is, it can be seen from the calculation that the increment of the bending arc length of each foil layer is an arithmetic sequence.
[0047] Based on the above calculation method, the length dimension of the limiting block 2 in this utility model is determined according to the length increment (arc length difference) obtained by the above calculation. Since the foil has multiple layers, multiple limiting blocks with different length increments can be obtained. When using this fixture, it is only necessary to replace the corresponding limiting block according to the arc length difference calculated above to achieve bending of multiple layers of foil and punching of the foil. If we follow the order from the outermost to the innermost during bending, we first select the corresponding limiting block for the foil with the outermost bending angle, install and position it, and then pre-bend and punch the foil; then replace the next lower level limiting block and repeat the above operation; until we replace the limiting block corresponding to the innermost foil, and complete the pre-bending and punching of the foil. Repeat this process, and each foil can complete the reserved bending increment under the restriction of its corresponding limiting block 2, and achieve consistency of the punching hole positions of each layer of foil. This method solves the problem in existing technologies where multiple molds are needed to stamp foils of varying lengths due to bending, significantly reducing production costs, improving production efficiency, and lowering product defect rates. Bending and punching can both be performed on this fixture, further enhancing production efficiency. The modular structure of the fixture can be arranged according to the required bending quantity, making it more flexible in use and operation, and capable of accommodating different types of foils.
[0048] The fixture proposed in this utility model has a simple structure, is easy to operate, assemble and maintain, and has low manufacturing cost.
[0049] Use of this fixture:
[0050] Combination Figure 4 As shown, Figure 4This is a schematic diagram of placing the foil sheet on the fixture in a preferred embodiment. Remove the product pressure plate 1, positioning cover plate 6, and push rod 9; select the corresponding length limiting block 2 and install it on the slider 5, then move the slider away from the bending mechanism, place the metal foil sheet on the positioning base 7, and move the slider 5 to make the length limiting block 2 and the foil sheet fit tightly; return the product pressure plate 1 and positioning cover plate 6 to their original positions, and tighten them with the corresponding screws in the corresponding threaded holes; according to the bending direction, insert the push rod 9 into the push rod groove 10, and use the push rod 9 to pre-bend the foil sheet upwards or downwards; use a punch to punch holes in the holes corresponding to the pressure plate 1 and the slider 5 to obtain punched holes on the foil sheet; after completion, remove the foil sheet; repeat the above operations to complete the pre-bending process of multiple layers of foil sheets, and stack the bent foil sheets in sequence for subsequent processing.
[0051] The length limiting block 2 is equipped with replacement parts of different sizes (quickly replaceable modules) in the fixture. When all the same foil is placed, incremental compensation is achieved by replacing the length limiting block 2 of different sizes.
[0052] This invention limits the increment generated by bending each layer of foil by using a length limiting block, and achieves foil bending in conjunction with a sliding structure and a bending structure. Furthermore, through the cooperation between the modules and the function of the length limiting block, the punching position on the foil can be determined. The punch passes through the punching holes on the product pressure plate and the slider, thereby punching holes on the foil, thus obtaining the same hole position for each layer of foil after punching. It is no longer necessary to use different molds to punch foils of different lengths, which simplifies the operation, improves production efficiency, and ensures the consistency of the punching hole position on the bent foil.
[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A fixture for solving the problem of increased bending volume caused by flexible sheet metal bending, characterized in that, include: The base plate (8) used to support the overall structure of the fixture includes at least one positioning structure, at least one sliding structure, and at least one bending mechanism. The positioning structure, sliding structure, and bending mechanism are all mounted on the base plate (8); The bending mechanism is located between the positioning structure and the sliding structure; The sliding structure includes a slider (5) that slides along the base plate (8), and a length limiting block (2) is provided on the slider (5) to limit the incremental length of the foil.
2. The fixture for solving the problem of increased bending volume in flexible sheet metal as described in claim 1, characterized in that, The positioning structure includes a positioning base (7) fixed on the base plate (8), and a detachable positioning cover plate (6) is provided on the positioning base (7).
3. The fixture for solving the problem of increased bending volume in flexible sheet metal according to claim 1, characterized in that, The sliding structure also includes a side limiting block (4), which is located on both sides of the slider (5); an upper limiting block (3) is provided on the side limiting block (4), which is located above the slider (5).
4. The fixture for solving the problem of increased bending volume in flexible sheet metal as described in claim 1, characterized in that, A product pressure plate (1) is mounted on the slider (5) by a positioning pin, and the length limiting block (2) is located at the rear end of the product pressure plate (1) and fixed on the slider (5).
5. A fixture for solving the problem of increased bending volume in flexible sheet metal as described in claim 1, characterized in that, The bending mechanism includes a push rod support (12) and a push rod (9). A push rod groove (10) is provided on the push rod support (12), and the push rod (9) is located in the push rod groove (10).
6. A fixture for solving the problem of increased bending volume in flexible sheet metal as described in claim 1, characterized in that, A limit block (11) is provided between the slider (5) and the top rod mechanism.
7. A fixture for solving the problem of increased bending volume in flexible sheet metal as described in claim 1, characterized in that, The length of the limiting block (2) is determined at least according to the bending angle of the foil.