A tooling die for forming an air filter box bottom cover bottom plate

Abstract

The utility model discloses a tooling die for air filter box bottom cover bottom plate forming, concretely relates to the profile die technical field, including lower mould, and the lower mould includes female die fixed plate, and the top of female die fixed plate is provided with female die, and the outer wall of female die is provided with the connecting block in a symmetrical manner, the top of lower mould is provided with upper mould, and the both sides of lower mould and upper mould are provided with fixed mechanism, is used for to the female die fixed plate top fixed to upper mould, the surface of connecting block is provided with positioning mechanism, is used for to the bottom cover bottom plate position limiting. The utility model discloses through female die and male die and positioning mechanism, realizes single -time profile forming, reduces manual intervention, improves production efficiency, profile accuracy and product consistency, reduces the labor intensity of worker.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, specifically to a tooling die for forming the bottom plate of an air filter box cover. Background Technology

[0002] In the production of internal combustion locomotive components, the air filter box bottom cover plate (made of low carbon steel Q235C, 3mm thick, 655mm wide, and 1889mm long) needs to be pressed with two symmetrically arranged 90-degree arcs, with an inner diameter of R57mm and an outer diameter of R60mm. The distance between the center lines of the two arcs is 1360mm, and they are symmetrical about the center line of the unfolded length of the bottom plate.

[0003] Existing technologies mainly rely on general-purpose bending machines, where multiple bending lines are drawn manually at the position to be bent, and the shape is formed segment by segment.

[0004] A search revealed, for example, a Chinese patent application with publication number CN221515667U, which discloses a bending machine for processing base plates. By placing the base plate into a placement slot on a placement plate, the elasticity of a spring limits the base plate through the placement plate, which is beneficial for placing base plates of different sizes and limiting them. A suitable bending die is selected and installed in the middle of the processing table according to the required bending shape and angle. At the same time, a matching pressure strip is installed on the clamping device, which helps to adjust the bending angle when bending the middle of the base plate. By changing the bending die, a specific bending machine is not required for bending, thus improving the convenience of bending base plates.

[0005] However, in actual use, the bottom plate of the air filter box weighs about 25kg. Workers need to frequently move the workpiece, which will cause damage to the workpiece. At the same time, the uneven bending force and large angle control error caused by manual bending resulted in deviations between the arc radius and angle and the design requirements. It is necessary to repeatedly check and manually reshape the workpiece using an arc template, which increases the labor intensity of workers. Utility Model Content

[0006] The purpose of this utility model is to provide a tooling mold for forming the bottom plate of an air filter box. Through the concave mold, convex mold and positioning mechanism, it can realize single-time pressing and forming, reduce manual intervention, improve production efficiency, pressing accuracy and product consistency, and reduce the labor intensity of workers.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tooling mold for forming the bottom plate of an air filter box cover, including a lower mold, the lower mold including a concave mold fixing plate, the top of the concave mold fixing plate being provided with a concave mold, and the outer wall of the concave mold being symmetrically provided with connecting blocks; The lower mold is provided with an upper mold at its top, and the lower mold and the upper mold are provided with fixing mechanisms on both sides for fixing the upper mold to the top of the die fixing plate; The surface of the connecting block is provided with a positioning mechanism for limiting the position of the bottom plate of the bottom cover.

[0008] Preferably, the upper mold includes a supporting top plate, and a punch fixing plate is provided at the bottom of the supporting top plate, and a punch is provided at the bottom of the punch fixing plate.

[0009] Preferably, the top four corners of the supporting top plate are fixedly connected with second lifting rings.

[0010] Preferably, the top four corners of the die fixing plate are fixedly connected with first lifting rings.

[0011] Preferably, the positioning mechanism includes a positioning plate, a positioning bracket is bolted to one side of the top of the positioning plate, a first baffle is symmetrically arranged on the other side of the top of the positioning plate, and a second baffle is symmetrically arranged on the outer wall of the positioning bracket.

[0012] Preferably, the positioning bracket has multiple fixing holes symmetrically opened on one side of its top.

[0013] Preferably, a limiting mold is provided on the other side of the top of the positioning bracket. The limiting mold is inserted into the interior of the positioning bracket, and a locking block is provided on the outer wall of the limiting mold. The locking block engages with the outer wall of the positioning bracket.

[0014] Preferably, the fixing mechanism includes a lower fixing rod, the lower fixing rod includes a fixing cylinder, the top of the fixing cylinder has an inner cavity, the top of the lower fixing rod is provided with an upper fixing rod, the upper fixing rod includes a mounting plate, the bottom of the mounting plate is provided with an outer rod, the bottom of the outer rod is provided with an inner rod, and the inner rod is inserted into the inside of the fixing cylinder.

[0015] Preferably, the top of the die fixing plate is symmetrically provided with multiple fixing holes.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. A tooling mold for forming the bottom plate of an air filter box bottom cover, which achieves precise pressing of the workpiece by matching the concave and convex dies with the required pressing angle and fixing the workpiece by a positioning mechanism. The workpiece only needs to be positioned once, without the need for manual adjustment of bending position and shaping and hammering, thus avoiding workpiece collision damage caused by repeated handling. 2. A tooling mold for forming the bottom plate of an air filter box cover, wherein the upper mold is precisely positioned on the top of the lower mold by means of an inner rod and a fixed cylinder. During the pressing process, a hydraulic press is required. If the hydraulic press deviates, it can be corrected by the inner rod and the fixed cylinder, thereby reducing the error after pressing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the lower mold structure of this utility model; Figure 3 This is a schematic diagram of the upper mold structure of this utility model; Figure 4 This is a schematic diagram of the positioning mechanism structure of this utility model; Figure 5 This is a schematic diagram of the fixing mechanism structure of this utility model; Figure 6 This is a schematic diagram of the fixing rod structure of the fixing mechanism of this utility model; Figure 7 This is a schematic diagram of the lower fixing rod structure of the fixing mechanism of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Lower mold; 11. Die fixing plate; 12. Die; 13. Connecting block; 14. Fixing hole; 15. First lifting ring; 2. Upper mold; 21. Support top plate; 22. Second lifting ring; 23. Punch fixing plate; 24. Punch; 3. Positioning mechanism; 31. Positioning plate; 32. Positioning bracket; 33. First baffle; 34. Fixing port; 35. Second baffle; 36. Limiting mold; 37. Clamping block; 4. Fixing mechanism; 41. Upper fixing rod; 411. Mounting plate; 412. Outer rod; 413. Inner rod; 42. Lower fixing rod; 421. Fixing cylinder; 422. Cylinder cavity. Detailed Implementation

[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0021] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more exemplary embodiments. Numerous specific details are provided in the following description to give a full understanding of exemplary embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, steps, etc., can be employed. In other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0022] This utility model provides, for example Figure 1-7 The tooling mold shown includes a lower mold 1, which includes a die fixing plate 11. The top of the die fixing plate 11 has a plurality of fixing holes 14 symmetrically opened. Bolts are inserted into the fixing holes 14 to fix the die fixing plate 11 to the top of the worktable of a 300-ton hydraulic press. A die 12 is provided on the top of the die fixing plate 11. The four corners of the top of the die fixing plate 11 are fixedly connected to the first lifting rings 15 for lifting the lower mold 1, so as to facilitate the transportation and unloading of the die 12.

[0023] like Figure 1 , Figure 3 As shown, the upper mold 2 is provided on the top of the lower mold 1. The upper mold 2 includes a supporting top plate 21. Bolt holes are opened at the four corners of the top of the supporting top plate 21. Bolts are used to connect the supporting top plate 21 to the slider of the 300-ton hydraulic press. A punch fixing plate 23 is provided at the bottom of the supporting top plate 21. A punch 24 is provided at the bottom of the punch fixing plate 23. The punch 24 adopts an arc-shaped structure with a radius of R54mm, which matches the springback characteristics of the arc to be pressed (considering the springback coefficient of Q235C material with a thickness of 3mm). It is used to directly press the workpiece to form an arc. The top of the die 12 is provided with a forming cavity that matches the punch 24. The curvature of the forming cavity matches the design outer diameter of the workpiece. The four corners of the top of the supporting top plate 21 are fixedly connected with a second lifting ring 22 for lifting the upper mold 2, which is convenient for transportation and loading / unloading. The workpiece can also be lifted by a crane, eliminating the need for frequent handling by workers.

[0024] like Figure 2 , Figure 4As shown, connecting blocks 13 are symmetrically arranged on the outer wall of the die 12. A positioning mechanism 3 is provided on the surface of the connecting block 13 for limiting the workpiece. The positioning mechanism 3 includes a positioning plate 31. The other end of the positioning plate 31 is fixed to the threaded hole of the connecting block 13 by bolts. A positioning bracket 32 ​​is installed on one side of the top of the positioning plate 31 by bolts. A first baffle 33 is symmetrically arranged on the other side of the top of the positioning plate 31. A second baffle 35 is symmetrically arranged on the outer wall of the positioning bracket 32. The first baffle 33 and the second baffle 35 can limit the workpiece and prevent the workpiece from shifting during the pressing process, which would affect the pressing accuracy.

[0025] To ensure that the two arcs are symmetrical about the center line of the base plate after the workpiece is pressed, as follows: Figure 3 As shown, the positioning bracket 32 ​​has multiple fixing holes 34 symmetrically opened on one side of its top. The bolts for fixing the positioning bracket 32 ​​to the positioning plate 31 are located inside one of the fixing holes 34. When it is necessary to adjust the position of the positioning bracket 32, the bolts can be inserted into the other fixing hole 34. Considering the need to press both ends of the workpiece, once one end is pressed, the curvature does not fully contact the positioning plate. During the pressing process, errors can occur due to movement of the other end of the workpiece. For example... Figure 4 As shown, a limiting mold 36 is provided on the other side of the top of the positioning bracket 32. The curvature of the limiting mold 36 matches the required angle. Insertion blocks are symmetrically opened at the top of the rear end of the limiting mold 36. The insertion blocks are inserted into the top of the vertical plate of the positioning bracket 32. Then, a card block 37 is inserted into the surface of the insertion block. The card block 37 is fixed to the surface of the positioning bracket 32 ​​by engaging with the outer wall of the positioning bracket 32.

[0026] like Figure 5-7As shown, fixing mechanisms 4 are provided on both sides of the lower mold 1 and the upper mold 2 to fix the upper mold 2 to the top of the die fixing plate 11. The fixing mechanism 4 includes a lower fixing rod 43, which includes a fixing cylinder 431. The bottom of the fixing cylinder 431 is fixedly connected to the top of the die fixing plate 11. The top of the fixing cylinder 431 has an inner cavity 432. An upper fixing rod 41 is provided at the top of the lower fixing rod 43. The upper fixing rod 41 includes a mounting plate 411. The outer wall of the mounting plate 411 is fixedly connected to the outer wall of the supporting top plate 21. An outer rod 412 is provided at the bottom of the mounting plate 411. An inner rod 413 is provided at the bottom of the outer rod 412. The inner rod 413 is inserted into the inside of the fixing cylinder 431 to limit the lower mold 1 and the upper mold 2. When pressing the workpiece, the bottom cover plate is placed on the lower mold 1, and the position is determined by the positioning plate 31 and the positioning bracket 32. Then, the hydraulic press is started, and the upper die 2 moves downward, so that the punch 24 at the bottom of the upper die 2 and the die 12 at the top of the lower die 1 close. Utilizing the matching arc of the punch R54mm and the die R57mm, a 90-degree arc can be formed in a single press. Taking advantage of the material's springback characteristics, the workpiece arc finally meets the design requirements of inner diameter R57mm and outer diameter R60mm. Considering that the hydraulic press may deviate during the movement, resulting in pressing errors, when the hydraulic press drives the upper die 2 to move, if the inner rod 413 is precisely inserted into the inner cavity 432 of the cylinder, a small deviation will cause the inner rod 413 to be inserted into the inner cavity 432 of the cylinder due to external force, thus correcting the device and reducing errors. If a large deviation occurs, the inner rod 413 cannot be inserted into the inner cavity 432 of the cylinder at all, and the hydraulic press needs to be shut down for maintenance.

[0027] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of the utility model.

[0028] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tooling mold for forming the bottom plate of an air filter box cover, comprising a lower mold (1), characterized in that: The lower mold (1) includes a die fixing plate (11), a die (12) is provided on the top of the die fixing plate (11), and connecting blocks (13) are symmetrically provided on the outer wall of the die (12). The lower mold (1) is provided with an upper mold (2) at its top. The lower mold (1) and the upper mold (2) are provided with fixing mechanisms (4) on both sides for fixing the upper mold (2) to the top of the die fixing plate (11). The surface of the connecting block (13) is provided with a positioning mechanism (3) for limiting the bottom plate of the bottom cover.

2. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 1, characterized in that: The upper mold (2) includes a supporting top plate (21), and a punch fixing plate (23) is provided at the bottom of the supporting top plate (21), and a punch (24) is provided at the bottom of the punch fixing plate (23).

3. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 2, characterized in that: The top four corners of the supporting top plate (21) are fixedly connected with second lifting rings (22).

4. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 1, characterized in that: The top four corners of the die fixing plate (11) are fixedly connected with the first lifting ring (15).

5. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 1, characterized in that: The positioning mechanism (3) includes a positioning plate (31), a positioning bracket (32) is installed on one side of the top of the positioning plate (31) by bolts, a first baffle (33) is symmetrically arranged on the other side of the top of the positioning plate (31), and a second baffle (35) is symmetrically arranged on the outer wall of the positioning bracket (32).

6. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 5, characterized in that: The positioning bracket (32) has multiple fixing ports (34) symmetrically opened on one side of its top.

7. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 6, characterized in that: A limiting mold (36) is provided on the other side of the top of the positioning bracket (32). The limiting mold (36) is inserted into the interior of the positioning bracket (32). A locking block (37) is provided on the outer wall of the limiting mold (36). The locking block (37) is engaged with the outer wall of the positioning bracket (32).

8. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 1, characterized in that: The fixing mechanism (4) includes a lower fixing rod (43), the lower fixing rod (43) includes a fixing cylinder (431), the top of the fixing cylinder (431) is provided with an inner cavity (432), the top of the lower fixing rod (43) is provided with an upper fixing rod (41), the upper fixing rod (41) includes a mounting plate (411), the bottom of the mounting plate (411) is provided with an outer rod (412), the bottom of the outer rod (412) is provided with an inner rod (413), and the inner rod (413) is inserted into the inside of the fixing cylinder (431).

9. The tooling mold for forming the bottom plate of an air filter box bottom cover according to claim 1, characterized in that: The top of the die fixing plate (11) is symmetrically provided with multiple fixing holes (14).

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