A truck window panel blanking die

Abstract

The utility model provides a kind of truck window plate blanking die, belong to railway truck technical equipment technical field, including upper die holder and lower die holder, the middle part area between upper die holder and lower die holder forms material plate placement area, the circumferential of material plate placement area has material pressing structure, and the middle part of material plate placement area has window forming structure;Material pressing structure includes upper die backing plate and material pressing plate;Window forming structure includes female die cutout forming insert and male die cutout forming insert, and window forming cavity is formed between female die cutout forming insert and male die cutout forming insert, and multiple cutting parts and multiple top bending parts are sequentially arranged in alternation in window forming cavity along transverse direction.The utility model provides a kind of truck window plate blanking die, all processes are completed under the same reference, need not multiple clamping, avoid positioning error accumulation.Meanwhile, cutting part guarantees window edge accurate cutting, and top bending part realizes the bending forming required, improves window overall dimensional accuracy, reduces the probability of cooperation failure.

Description

Technical Field

[0001] This utility model belongs to the field of railway freight car technology and equipment technology, and more specifically, it relates to a freight car window panel punching die. Background Technology

[0002] In the truck manufacturing industry, the window panel, as an important component of the vehicle body, not only needs to meet the basic functions of sealing and protection, but its structural precision and forming quality also directly affect the assembly efficiency and appearance consistency of the entire vehicle. Truck window panels are usually stamped metal sheets, and the window structure on them needs to be processed through a stamping process to achieve a precise fit with components such as window glass and seals.

[0003] In the traditional truck window panel forming process, single-function punching dies are often used. That is, the window outline is first cut by a cutting die, and then the window edge is bent by a bending die. This step-by-step processing method requires multiple clamping, which will lead to the accumulation of positioning errors, making it difficult to control the window size accuracy and easily causing problems with poor fit with subsequent assembly parts. Utility Model Content

[0004] The purpose of this utility model is to provide a punching die for truck window panels, which aims to solve the problem that the step-by-step processing method of traditional forming process requires multiple clamping of truck window panels, which will lead to the accumulation of positioning errors, making it difficult to control the accuracy of window size and easily causing poor fit with subsequent assembly parts.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a truck window panel punching die, including an upper die base and a lower die base, wherein a material plate placement area is formed in the middle region between the upper die base and the lower die base, the material plate placement area has a pressing structure in the circumferential direction, and a window forming structure is provided in the middle of the material plate placement area; The pressing structure includes an upper mold pad and a pressing plate. The upper mold pad is disposed on the lower end face of the upper mold base, and the pressing plate is disposed on the upper end face of the lower mold base. The upper mold pad and the pressing plate together press against the edge of the material plate. The window forming structure includes a concave die cutting forming insert and a convex die cutting forming insert. The concave die cutting forming insert is disposed on the lower end face of the upper die base, and the convex die cutting forming insert is disposed on the upper end face of the lower die base. A window forming cavity is formed between the concave die cutting forming insert and the convex die cutting forming insert. Multiple cutting portions and multiple top bending portions are alternately arranged in the transverse direction in the window forming cavity.

[0006] In one possible implementation, a plurality of forming protrusions are sequentially arranged in the lower end of the window forming cavity along the horizontal direction, and a plurality of forming grooves are sequentially arranged in the upper end of the window forming cavity along the horizontal direction. The plurality of forming protrusions and the plurality of forming grooves correspond one-to-one. The same side of the forming protrusions and the forming grooves forms two intersecting cutting surfaces. The two cutting surfaces constitute the cutting part for cutting the material plate. The upper end of the forming protrusion is provided with a conforming arc surface adapted to the window panel. The conforming arc surface is inserted into the forming groove to form the bending part for bending the cut material plate into an arc-shaped window.

[0007] In one possible implementation, upper wear plates are provided on both sides of the lower end face of the upper mold base, and lower wear plates are provided on both sides of the upper end face of the lower mold base. The upper wear plates and the lower wear plates are inserted into each other, and both the upper wear plates and the lower wear plates are located on both sides of the material plate placement area.

[0008] In one possible implementation, the upper end face of the lower mold base is provided with a plurality of positioning pins, and the plurality of positioning pins surround the outer periphery of the material plate placement area.

[0009] In one possible implementation, the lower die holder is provided with an elastic ejector rod located below the pressure plate, which is used to apply an upward elastic force to the pressure plate.

[0010] In one possible implementation, the die notch forming insert has a die reference insert on one side and a die wedge structure on the other side. The punch notch forming insert has a punch reference insert on one side and a punch wedge structure on the other side. The die reference insert and the punch reference insert are arranged opposite each other in the height direction. The die wedge structure is used to laterally press the die notch forming insert against the die reference insert, and the punch wedge structure is used to laterally press the punch notch forming insert against the punch reference insert.

[0011] In one possible implementation, the die wedge structure includes a die clamping wedge and a die fixing wedge arranged in sequence, and the punch wedge structure includes a punch clamping wedge and a punch fixing wedge arranged in sequence. Inclined sliding surfaces are provided between the die clamping wedge and the die fixing wedge, and between the punch clamping wedge and the punch fixing wedge. The die clamping wedge slides along the inclined sliding surface to laterally clamp the die cutting forming insert, and the punch clamping wedge slides along the inclined sliding surface to laterally clamp the punch cutting forming insert.

[0012] In one possible implementation, there are multiple die-cutting inserts and multiple punch-cutting inserts, each of which corresponds to a cutting portion and a top bending portion.

[0013] In one possible implementation, there are two die-cutting inserts and multiple punch-cutting inserts. Each die-cutting insert corresponds to multiple cutting portions and multiple top-bending portions, and each punch-cutting insert corresponds to one cutting portion and one top-bending portion.

[0014] In one possible implementation, guide posts and guide sleeves that cooperate with each other are provided between the upper mold base and the lower mold base, and the guide posts and guide sleeves are respectively provided on the lower end face of the upper mold base and the upper end face of the lower mold base; lifting columns are symmetrically provided on both sides of the upper mold base and both sides of the lower mold base.

[0015] The beneficial effects of the punching die for truck window panels provided by this utility model are as follows: Compared with the prior art, the pressing structure and the window forming structure are integrated in the upper and lower die bases. The upper die pad and pressing plate of the pressing structure can stably press the edge of the material plate, ensuring that the position of the material plate is fixed during processing. All processes are completed under the same reference, eliminating the need for multiple clamping and avoiding the accumulation of positioning errors. At the same time, multiple cutting parts and bending parts arranged alternately in the horizontal direction in the window forming cavity can simultaneously complete the cutting and bending processing. The cutting parts ensure precise cutting of the window edge, and the bending parts achieve the required bending forming. Both work synchronously in the same forming cavity at preset positions, avoiding dimensional misalignment that may occur in step-by-step processing, ensuring the relative positional accuracy of the cutting size and the bending angle, significantly improving the overall dimensional accuracy of the window, improving the dimensional matching degree with subsequent assembly parts, and reducing the probability of poor fit. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art 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.

[0017] Figure 1 A top view of the lower mold base and related components installed on the upper mold base is provided for this utility model; Figure 2 for Figure 1 A cross-sectional view of the truck window panel punching die along the AA direction; Figure 3 for Figure 1A cross-sectional view of the truck window panel punching die along the BB direction; Figure 4 for Figure 3 A magnified view of a section at point C.

[0018] In the diagram: 1. Upper mold base; 2. Lower mold base; 3. Upper mold pad; 4. Pressure plate; 5. Die cutter forming insert; 6. Punch cutter forming insert; 7. Cutting part; 8. Top bending part; 9. Forming protrusion; 10. Forming groove; 11. Upper wear plate; 12. Lower wear plate; 13. Locating pin; 14. Mandrel; 15. Spring; 16. Die reference insert; 17. Punch reference insert; 18. Die clamping wedge; 19. Die fixing wedge; 20. Punch clamping wedge; 21. Punch fixing wedge; 22. Guide post; 23. Guide sleeve; 24. Lifting post. Detailed Implementation

[0019] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0021] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0022] Please see Figures 1 to 4The present invention will now describe a punching die for a truck window panel. A punching die for a truck window panel includes an upper die base 1 and a lower die base 2. A material plate placement area is formed in the middle region between the upper die base 1 and the lower die base 2. The material plate placement area has a pressing structure in the circumferential direction and a window forming structure in the middle of the material plate placement area. The pressing structure includes an upper die pad 3 and a pressing plate 4. The upper die pad 3 is disposed on the lower end face of the upper die base 1, and the pressing plate 4 is disposed on the upper end face of the lower die base 2. The upper die pad 3 and the pressing plate 4 together press against the edge of the material plate. The window forming structure includes a die-cutting insert 5 and a punch-cutting insert 6. The die-cutting insert 5 is disposed on the lower end face of the upper die base 1, and the punch-cutting insert 6 is disposed on the upper end face of the lower die base 2. A window forming cavity is formed between the die-cutting insert 5 and the punch-cutting insert 6. Multiple cutting parts 7 and multiple top bending parts 8 are alternately arranged in the transverse direction in the window forming cavity.

[0023] This utility model provides a punching die for a truck window panel. Compared with the prior art, it integrates the pressing structure and the window forming structure in the upper die base 1 and the lower die base 2. The upper die pad 3 and the pressing plate 4 of the pressing structure can stably press the edge of the material plate, ensuring that the position of the material plate is fixed during processing. All processes are completed under the same reference, eliminating the need for multiple clamping and avoiding the accumulation of positioning errors. At the same time, multiple cutting parts 7 and bending parts 8 arranged laterally alternately in the window forming cavity can simultaneously complete the cutting and bending processes. The cutting part 7 ensures precise cutting of the window edge, and the bending part 8 achieves the required bending and forming. Both work synchronously in the same forming cavity at preset positions, avoiding dimensional misalignment that may occur in step-by-step processing, ensuring the relative positional accuracy of the cutting size and the bending angle, significantly improving the overall dimensional accuracy of the window, improving the dimensional matching degree with subsequent assembled parts, and reducing the probability of poor fit.

[0024] Please see Figure 3 and Figure 4Multiple forming protrusions 9 are arranged horizontally at the lower end of the window forming cavity, and multiple forming grooves 10 are arranged horizontally at the upper end of the window forming cavity. The multiple forming protrusions 9 and multiple forming grooves 10 correspond one-to-one, ensuring the alignment accuracy of the upper and lower structures during processing and avoiding processing errors caused by positional deviations. This provides a stable foundation for subsequent cutting and bending processes. The forming protrusions 9 and forming grooves 10 form two intersecting cutting surfaces on the same side. The two cutting surfaces constitute the cutting part 7 for cutting the material plate. The intersecting design of the two cutting surfaces forms a strong cutting effect on the material plate when the mold is closed, ensuring that the cutting of the window edge is flat and burr-free, greatly improving the processing quality of the cut and reducing the workload of subsequent grinding and other finishing processes. The upper end of the forming protrusion 9 is provided with a conformal arc surface adapted to the window panel. The conformal arc surface is inserted into the forming groove 10 to form a top bending part 8 for bending the cut material plate into an arc-shaped window. When the conformal arc surface is inserted into the forming groove 10, it forms the top bending part 8, which can simultaneously bend the material plate into an arc-shaped window that matches the design of the window panel while the material plate is being cut. This simultaneous cutting and bending operation not only avoids the arc dimension deviation that may occur in step-by-step processing due to different positioning in two steps, but also ensures that the curvature of the arc-shaped window accurately matches the design requirements.

[0025] Please see Figure 1 and Figure 2 Upper wear plates 11 are provided on both sides of the lower end face of the upper mold base 1, and lower wear plates 12 are provided on both sides of the upper end face of the lower mold base 2. The upper wear plates 11 and lower wear plates 12 are inserted into each other and are located on both sides of the material plate placement area. The insertion and engagement of the upper wear plates 11 and lower wear plates 12 can form a guide during the opening and closing of the upper mold base 1 and the lower mold base 2, ensuring that the mold base moves along the preset trajectory, avoiding processing deviations caused by misalignment, and dispersing the lateral force of mold closing, reducing mold shaking, and providing a stable environment for material pressing and window forming in the material plate placement area. In addition, as wear-resistant components, the upper wear plates 11 and lower wear plates 12 can withstand the frictional wear generated by the long-term opening and closing of the mold base, avoiding direct contact wear on both sides of the mold base. Subsequently, only the wear plates need to be replaced to restore the guiding performance of the mold, without the need for repair or replacement of the entire mold base, reducing maintenance costs and extending the overall service life of the mold.

[0026] Please see Figures 1 to 2The upper surface of the lower mold base 2 is provided with multiple positioning pins 13, which surround the outer periphery of the material plate placement area, providing initial positioning for the material plate. Before processing, the material plate is quickly placed within the area formed by the positioning pins 13. The positioning pins 13 can limit the material plate from multiple points on its outer periphery, preventing the material plate from shifting or shaking during placement and ensuring that the material plate is accurately positioned in the preset processing position. This multi-point positioning method effectively reduces the positioning inaccuracy caused by operational errors during manual placement of the material plate, laying a good foundation for the subsequent clamping of the pressing structure and the processing of the window forming structure, and further ensuring the stability of the material plate position during processing.

[0027] Please see Figure 2 The lower mold base 2 is provided with an elastic ejector rod, which is located below the pressure plate 4 and is used to apply an upward elastic force to the pressure plate 4. The elastic ejector rod includes a mandrel 14 and a spring 15. When the material plate is placed on the pressure plate 4 for window forming, the spring 15 is in a contracted state. After the window plate is formed, the spring 15 releases the elastic force and pushes the pressure plate 4 upward through the mandrel 14 to complete the unloading.

[0028] Please see Figure 3 The die-cutting insert 5 has a die reference insert 16 on one side and a die wedge structure on the other side. The punch-cutting insert 6 has a punch reference insert 17 on one side and a punch wedge structure on the other side. The die reference insert 16 and the punch reference insert 17 are positioned opposite each other in height, providing a precise positioning reference for the die-cutting insert 5 and the punch-cutting insert 6. This ensures that they maintain the correct relative position during assembly and operation, which is the foundation for ensuring the dimensional accuracy of the window forming cavity and provides a guarantee for the precise processing of the window panel from the source. The die wedge structure is used to laterally press the die-cutting insert 5 against the die reference insert 16, and the punch wedge structure is used to laterally press the punch-cutting insert 6 against the punch reference insert 17. This lateral pressing method can effectively eliminate the gap between the insert and the reference insert, preventing displacement or shaking due to impact during processing.

[0029] Please see Figure 3The die wedge structure includes a die clamping wedge 18 and a die fixing wedge 19 arranged sequentially, and the punch wedge structure includes a punch clamping wedge 20 and a punch fixing wedge 21 arranged sequentially. Inclined sliding surfaces are provided between the die clamping wedge 18 and the die fixing wedge 19, and between the punch clamping wedge 20 and the punch fixing wedge 21. The die clamping wedge 18 slides along the inclined sliding surface to laterally clamp the die cutting forming insert 5, and the punch clamping wedge 20 slides along the inclined sliding surface to laterally clamp the punch cutting forming insert 6. When the die clamping wedge 18 slides along the inclined sliding surface, it converts the vertical force into a lateral clamping force, acting on the die cutting forming insert 5 to ensure it tightly fits against the die reference insert 16. Similarly, the lateral force generated by the punch clamping wedge 20 sliding along the inclined sliding surface ensures that the punch cutting forming insert 6 is fixed on the punch reference insert 17. This method of force conversion and transmission avoids the problems of uneven force or local deformation of the insert that may be caused by traditional rigid clamping, and ensures that the insert is always in a stable preset position during the processing.

[0030] In the first embodiment, there are multiple concave die cutting forming inserts 5 and convex die cutting forming inserts 6. Each concave die cutting forming insert 5 and each convex die cutting forming insert 6 corresponds to a cutting part 7 and a bending part 8. During processing, the force on each part is more even, and each cutting and bending action can be precisely controlled. This is especially suitable for situations where the window structure is relatively regular and the size requirements of each part are uniform. It is also convenient to maintain and replace individual inserts. If a certain insert is worn, only the corresponding insert needs to be replaced, which reduces maintenance costs and difficulty.

[0031] In the second embodiment, there are two die-cutting forming inserts 5 and multiple punch-cutting forming inserts 6. Each die-cutting forming insert 5 corresponds to multiple cutting parts 7 and multiple bending parts 8, and each punch-cutting forming insert 6 corresponds to one cutting part 7 and one bending part 8. The two die-cutting forming inserts 5 can coordinate multiple cutting and bending actions, which can adapt to scenarios with complex window structures that require multiple sets of different cutting and bending actions. By combining the centralized control of the die with the decentralized action of the punch, the overall processing coordination can be ensured, and the cutting part 7 and bending part 8 corresponding to each punch can be operated precisely, ensuring the dimensional accuracy of each part of the complex window. At the same time, this structure reduces the number of die-cutting inserts to a certain extent, simplifies the upper mold structure, and reduces the assembly difficulty of the upper mold.

[0032] Please see Figure 3The upper mold base 1 and the lower mold base 2 are provided with mutually cooperating guide pillars 22 and guide sleeves 23. The guide pillars 22 and guide sleeves 23 are respectively set on the lower end face of the upper mold base 1 and the upper end face of the lower mold base 2. The guiding of the guide pillars 22 and guide sleeves 23 can reduce the wear of various parts of the mold, maintain the stability of processing accuracy, and further ensure the dimensional accuracy of the truck window panel and product quality. Lifting pillars 24 are symmetrically arranged on both sides of the upper mold base 1 and both sides of the lower mold base 2. The mold is lifted smoothly by the lifting pillars 24, avoiding mold tilting, component damage or personnel safety risks caused by improper lifting position.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A punching die for a truck window panel, characterized in that, It includes an upper mold base (1) and a lower mold base (2), and the middle area between the upper mold base (1) and the lower mold base (2) forms a material plate placement area. The material plate placement area has a pressing structure in the circumferential direction, and the middle part of the material plate placement area has a window forming structure. The pressing structure includes an upper mold pad (3) and a pressing plate (4). The upper mold pad (3) is disposed on the lower end face of the upper mold base (1), and the pressing plate (4) is disposed on the upper end face of the lower mold base (2). The upper mold pad (3) and the pressing plate (4) together press against the edge of the material plate. The window forming structure includes a concave die cutting forming insert (5) and a convex die cutting forming insert (6). The concave die cutting forming insert (5) is disposed on the lower end face of the upper die base (1), and the convex die cutting forming insert (6) is disposed on the upper end face of the lower die base (2). A window forming cavity is formed between the concave die cutting forming insert (5) and the convex die cutting forming insert (6). Multiple cutting parts (7) and multiple top bending parts (8) are alternately arranged in the transverse direction in the window forming cavity.

2. The truck window panel punching die as described in claim 1, characterized in that, The lower end of the window forming cavity is provided with a plurality of forming protrusions (9) arranged in a horizontal direction, and the upper end of the window forming cavity is provided with a plurality of forming grooves (10) arranged in a horizontal direction. The plurality of forming protrusions (9) and the plurality of forming grooves (10) correspond one to one. The same side of the forming protrusions (9) and the forming grooves (10) forms two intersecting cutting surfaces. The two cutting surfaces constitute the cutting part (7) for cutting the material plate. The upper end of the forming protrusion (9) is provided with a conforming arc surface adapted to the window panel. The conforming arc surface is inserted into the forming groove (10) to form the bending part (8) for bending the cut material plate into an arc-shaped window.

3. The truck window panel punching die as described in claim 1, characterized in that, Upper wear plates (11) are provided on both sides of the lower end face of the upper mold base (1), and lower wear plates (12) are provided on both sides of the upper end face of the lower mold base (2). The upper wear plates (11) and the lower wear plates (12) are inserted into each other. The upper wear plates (11) and the lower wear plates (12) are both located on both sides of the material plate placement area.

4. The truck window panel punching die as described in claim 1, characterized in that, The upper end face of the lower mold base (2) is provided with a plurality of positioning pins (13), and the plurality of positioning pins (13) surround the outer periphery of the material plate placement area.

5. A truck window panel punching die as described in claim 1, characterized in that, The lower mold base (2) is provided with an elastic ejector rod, which is located below the pressure plate (4) and is used to apply an upward elastic force to the pressure plate (4).

6. A truck window panel punching die as described in claim 1, characterized in that, The die-cutting insert (5) has a die reference insert (16) on one side and a die wedge structure on the other side. The punch-cutting insert (6) has a punch reference insert (17) on one side and a punch wedge structure on the other side. The die reference insert (16) and the punch reference insert (17) are arranged opposite each other in the height direction. The die wedge structure is used to press the die-cutting insert (5) laterally against the die reference insert (16). The punch wedge structure is used to press the punch-cutting insert (6) laterally against the punch reference insert (17).

7. A truck window panel punching die as described in claim 6, characterized in that, The concave die wedge structure includes a concave die clamping wedge (18) and a concave die fixing wedge (19) arranged in sequence. The convex die wedge structure includes a convex die clamping wedge (20) and a convex die fixing wedge (21) arranged in sequence. There are inclined sliding surfaces between the concave die clamping wedge (18) and the concave die fixing wedge (19), and between the convex die clamping wedge (20) and the convex die fixing wedge (21). The concave die clamping wedge (18) slides along the inclined sliding surface to laterally clamp the concave die cutting forming insert (5). The convex die clamping wedge (20) slides along the inclined sliding surface to laterally clamp the convex die cutting forming insert (6).

8. A truck window panel punching die as described in claim 1, characterized in that, There are multiple concave die cutting forming inserts (5) and convex die cutting forming inserts (6), and each concave die cutting forming insert (5) and each convex die cutting forming insert (6) corresponds to a cutting part (7) and a top bending part (8).

9. A truck window panel punching die as described in claim 1, characterized in that, There are two concave die cutting forming inserts (5) and multiple convex die cutting forming inserts (6). Each concave die cutting forming insert (5) corresponds to multiple cutting portions (7) and multiple top bending portions (8), and each convex die cutting forming insert (6) corresponds to one cutting portion (7) and one top bending portion (8).

10. A truck window panel punching die as described in claim 1, characterized in that, The upper mold base (1) and the lower mold base (2) are provided with mutually cooperating guide posts (22) and guide sleeves (23), respectively located on the lower end face of the upper mold base (1) and the upper end face of the lower mold base (2); lifting posts (24) are symmetrically arranged on both sides of the upper mold base (1) and both sides of the lower mold base (2).

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