Cold roll forming device with adjustable inclined roller angle

Abstract

The utility model provides a cold roll forming device with an adjustable inclined roller angle, which comprises a roller support, a forming roller set and an inclined roller, the inclined roller is fixedly assembled on a cross shaft between the roller supports through an adjustable mounting seat, and the adjustable mounting seat comprises an inclined roller fixing mechanism, a swing rod adjusting mechanism and a jackscrew locking mechanism; the inclined roller fixing mechanism comprises an upper fixing block and a lower swinging block rotationally matched with the upper fixing block through a first rotating shaft, a transverse shaft mounting hole is formed in the upper portion of the upper fixing block, and an inclined roller mandrel mounting hole is formed in the lower portion of the lower swinging block; a swing rod adjusting mechanism is arranged on one side of the inclined roller fixing mechanism, and a jackscrew locking mechanism is arranged on the other side of the inclined roller fixing mechanism. The device is compact in structure, can perform small-amplitude adjustment on the angle of the inclined roller on line, avoids repeated disassembly and assembly of the roller and repair of a tool, greatly improves the efficiency, reduces the cost, and can be widely applied to a cold roll forming automatic production line.

Description

Technical Field

[0001] This utility model relates to the field of cold bending forming technology, and in particular to a cold bending forming device with adjustable slant roller angle. Background Technology

[0002] Cold roll forming is a plastic forming process that uses sequentially arranged multi-pass forming rollers to continuously bend metal sheets and strips laterally to create profiles with specific cross-sections. Continuous cold roll forming is widely used in industry due to its advantages such as fewer operators, long roller life (typically exceeding 700,000 cycles), high material utilization (up to 95%), low mold development costs, and simple maintenance. To precisely control the cold roll profile, inclined rollers are used during the forming process, primarily for springback control, avoiding blind corners, and solving problems such as empty bending.

[0003] In the "Springback Control Device for Cold-Bent High-Strength Steel Parts" disclosed in Chinese Patent CN201721407112.4, a slanted roller is mounted below a slanted roller mounting block. Through the cooperation between the forming roller, the slanted roller, and the vertical shaft roller corresponding to the large end face of the slanted roller, the springback angle of the cold-bent product is effectively controlled, ensuring that the processed high-strength steel parts achieve the forming effect that meets quality requirements. However, the fixed structure of the slanted roller mounting block leads to a fixed forming angle for the slanted roller. When debugging the forming of new products or materials, there is a lack of clarity regarding the springback characteristics of the new material, especially for high-strength steel. Continuous attempts and adjustments to the slanted roller angle are necessary to ensure controllable springback. Each adjustment requires repeatedly removing the slanted roller mounting block, which is very inconvenient and results in low debugging efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a compact, highly efficient, and adjustable slant roller angle cold bending forming device.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A cold bending forming device with adjustable slant roller angle includes a roller bracket, a forming roller group and a slant roller. The slant roller is fixedly mounted on a horizontal shaft between the roller brackets via an adjustable mounting seat. The adjustable mounting seat includes a slant roller fixing mechanism, a swing rod adjusting mechanism and a top screw locking mechanism.

[0007] The inclined roller fixing mechanism includes an upper fixing block and a lower swing block that rotates with the upper fixing block via a first rotating shaft. The upper fixing block has a horizontal shaft mounting hole on its upper part and an inclined roller core shaft mounting hole on its lower part. The inclined roller fixing mechanism has a swing rod adjustment mechanism for adjusting the angle of the inclined roller core shaft on the side away from the inclined roller and a set screw locking mechanism for locking the rotation position of the lower swing block on the side of the inclined roller fixing mechanism close to the inclined roller.

[0008] A further improvement of this utility model is that: the lower part of the upper fixing block is provided with a groove, the upper part of the lower swing block is provided with a rib that cooperates with the groove, and the rib of the lower swing block is inserted into the groove of the upper fixing block and connected by the first rotating shaft pin.

[0009] A further improvement of this utility model is that the bottom surface of the upper fixing block is set as an arc-shaped bottom surface centered on the first rotating shaft.

[0010] A further improvement of this utility model is that: the side of the lower swing block connected to the inclined roller mandrel is set as an inclined surface, and the inclined roller mandrel mounting hole is opened on the inclined surface side of the lower swing block.

[0011] A further improvement of this utility model is that: the swing arm adjustment mechanism includes an L-shaped fixed seat, a swing transmission block, a swing arm, and a swing arm locking nut; the L-shaped fixed seat is fixedly connected to the upper fixed block, and an opening slot for accommodating the swing transmission block is provided in the middle of the L-shaped fixed seat; the swing transmission block is placed in the opening slot and fixedly connected to the lower swing block, so as to realize the follow-up movement of the swing transmission block and the lower swing block; the upper end of the swing arm is hinged to the swing transmission block, and the lower end of the swing arm passes through the bottom plate of the L-shaped fixed seat and is locked by the swing arm locking nut.

[0012] A further improvement of this utility model is that: the lower part of the swing transmission block is provided with a groove for the upper end of the swing rod to be inserted, and the upper end of the swing rod is connected by a second rotating shaft pin after being inserted into the groove.

[0013] A further improvement of this utility model is that the set screw locking mechanism includes a set screw fixing block and a set screw. The set screw fixing block is fixed to the upper fixing block by screws, and the set screw passes through the set screw fixing block laterally and then presses against the lower swing block.

[0014] A further improvement of this utility model is that: the side of the set screw fixing block that is attached to the upper fixing block is provided with a vertically penetrating relief groove for avoiding the swing position of the lower swing block, and the set screw passes through the relief groove laterally and then presses against the lower swing block.

[0015] The beneficial effects obtained by this utility model through the above technical solution are:

[0016] This invention provides a cold bending forming device with an adjustable slant roller angle. It has a compact structure and reasonable design. When the designed springback angle is insufficient or excessive, the angle of the slant roller can be adjusted slightly online to cope with the changes in springback characteristics when forming new materials. The angle adjustment process is simple and quick, avoiding repeated disassembly and assembly of rollers and repair of tooling, which greatly improves debugging efficiency, reduces labor and design costs, and reduces the workload of debugging and assembly personnel. It can be widely used in automated cold bending forming production lines. It can also be used to improve the slant roller mounting base of existing cold bending forming devices with small modifications and low modification costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the adjustable mounting base of this utility model;

[0019] Figure 3 This is a schematic diagram of the inclined roller fixing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the rocker arm adjustment mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the top screw locking mechanism of this utility model;

[0022] In the diagram, 1. Profile, 2. Lower roller, 3. Roller bracket, 4. Vertical roller, 5. Inclined roller, 6. Adjustable mounting base, 7. Upper shaft, 8. Lower shaft, 9. Vertical plate, 10. Inclined roller fixing mechanism, 101. Upper fixing block, 102. Lower swing block, 103. First rotating shaft, 104. First locking nut, 105. Inclined roller spindle, 106. Horizontal shaft mounting hole, 107. Inclined roller spindle mounting hole, 20. Swing rod adjusting mechanism, 201. L-shaped fixing base, 202. Swing rod, 203. Second rotating shaft, 204. Second locking nut, 205. Swing transmission block, 206. Swing rod locking nut, 30. Set screw locking mechanism, 301. Set screw fixing block, 302. Set screw, 303. Relief groove. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] A cold bending forming device with adjustable slant roller angle includes two roller supports 3 arranged opposite each other, a forming roller group and a slant roller 5 mounted on the roller supports 3. The slant roller 5 is fixedly mounted on a horizontal axis between the roller supports 3 by an adjustable mounting seat 6, and the slant roller angle can be adjusted slightly by the adjustable mounting seat 6. Figure 1 In the illustrated embodiment, the profile 1 has a U-shaped cross-section, and the forming roller assembly includes a pair of opposing vertical rollers 4 and a lower roller 2. Specifically, an upper shaft 7, a lower shaft 8, and a vertical plate 9 are horizontally arranged between the two roller supports 3. The lower roller 2 is mounted on the lower shaft 8, and two vertical rollers 4 are mounted on the vertical plate 9. The lower roller 2 and the two vertical rollers 4 work together to form the profile 1. The specific composition and arrangement of the forming roller assembly can be adjusted according to the change in the cross-section of the profile 1. The inclined roller 5 is mounted on the upper shaft 7 via an adjustable mounting base 6 to achieve springback control of the corners of the profile 1. The adjustable mounting base 6, for example... Figure 2 As shown, it includes a slanted roller fixing mechanism 10, a swing arm adjusting mechanism 20, and a top screw locking mechanism 30.

[0025] See Figure 3 The inclined roller fixing mechanism 10 includes an upper fixing block 101 and a lower swing block 102 that rotatably engages with the upper fixing block 101 via a first rotating shaft 103. The upper fixing block 101 has a horizontal shaft mounting hole 106 above it for connecting the inclined roller fixing mechanism 10 to the upper shaft 7. The lower swing block 102 has an inclined roller spindle mounting hole 107 at its lower part. The inclined roller spindle 105 is assembled and connected to the lower swing block 102 and moves synchronously with it. When the lower swing block 102 rotates around the first rotating shaft 103, it drives the inclined roller spindle 105 to rotate synchronously, thereby achieving a small-amplitude adjustment of the rolling angle of the inclined roller wheel 5. A swing rod adjustment mechanism 20 for adjusting the angle of the inclined roller spindle 105 is provided on the side of the inclined roller fixing mechanism 10 away from the inclined roller wheel 5. A set screw locking mechanism 30 for locking the rotational position of the lower swing block 102 is connected on the side of the inclined roller fixing mechanism 10 closer to the inclined roller wheel 5.

[0026] like Figure 3 As shown, the connection between the upper fixing block 101 and the lower swing block 102 is a slot feature, that is, the lower part of the upper fixing block 101 is provided with a groove structure, and the upper part of the lower swing block 102 is provided with a rib structure that cooperates with the groove structure. After the rib is wedged into the groove, it is connected by a first rotating shaft 103 pin, thereby realizing the rotatable connection between the upper fixing block 101 and the lower swing block 102.

[0027] It should be emphasized that the bottom of the upper fixing block 101 is set as an arc-shaped bottom surface, which is symmetrically distributed on the left and right sides with the first rotating shaft 103 as the center, so as to leave enough space for the rotation of the lower swing block 102.

[0028] In this embodiment, as Figure 2 As shown, the left side of the lower swing block 102 is an inclined plane and the right side is a vertical plane. The inclined roller mandrel 105 is vertically installed on the inclined side of the lower swing block 102. The inclination angle of the inclined side of the lower swing block 102 is set and adjusted according to the required forming angle of the profile.

[0029] The swing arm adjustment mechanism 20 is used to adjust the rotation angle of the lower swing block 102 relative to the upper fixed block 101. For example... Figure 4 As shown, the swing arm adjustment mechanism 20 includes an L-shaped fixed base 201, a swing transmission block 205, a swing arm 202, and a swing arm locking nut 206. The side plate of the L-shaped fixed base 201 is fixed to the side of the upper fixed block 101 away from the inclined roller 5, and is rigidly connected to the upper fixed block 101 to maintain a stable integral structure. An opening slot is opened in the middle of the long side of the L-shaped fixed base 201, and the swing transmission block 205 is placed in the opening slot and fixedly connected to the lower swing block 102 by screws, and the two move together. The upper end of the swing arm 202 is hinged to the swing transmission block 205, and its lower end passes through the bottom plate of the L-shaped fixed base 201 and is locked by the swing arm locking nut 206.

[0030] Specifically, the lower part of the swing transmission block 205 is provided with a groove structure. After the upper end of the swing rod 202 is inserted into the groove of the swing transmission block 205, it is connected by a pin through the second rotating shaft 203. The swing rod 202 and the swing transmission block 205 can rotate slightly with the second rotating shaft 203 as the axis.

[0031] Preferably, the swing arm 202 is a cylindrical rod, with platform portions on both sides of its top end. A transversely penetrating shaft hole is provided on each platform portion, through which the second rotating shaft 203 passes, achieving a hinged connection between the swing arm 202 and the swing transmission block 205. The bottom end of the swing arm 202 is provided with an external thread. After penetrating the base plate of the L-shaped fixing seat 201, the swing arm 202 is locked by upper and lower swing arm locking nuts 206. It should be noted that the hole feature of the L-shaped fixing seat 201 through the swing arm 202 is preferably a U-shaped groove, the length of which is the position of the maximum swing angle of the swing arm.

[0032] like Figure 5 As shown, the set screw locking mechanism 30 includes a set screw fixing block 301 and a set screw 302. The set screw fixing block 301 is fixed to the upper fixing block 101 by screws. A vertically penetrating relief groove 303 is provided on the side of the set screw fixing block 301 that fits against the upper fixing block 101 to allow for the swinging position of the lower swing block 102. The set screw 302 passes laterally through the relief groove 303 and then presses against the lower swing block 102 to lock the position of the lower swing block 102. Generally, the depth of the relief groove 303 is not less than 5mm.

[0033] In this invention, there are two set screws 302 arranged vertically. The double set screws can strengthen the stress point after the corner, increasing the structural rigidity and stability.

[0034] It should be noted that, in order to ensure the stable connection and smooth rotation between the rotating components of this utility model, one end of the first rotating shaft 103 / second rotating shaft 203 has a stepped feature to limit the first rotating shaft 103 / second rotating shaft 203 from moving in the opposite direction; the other end of the first rotating shaft 103 / second rotating shaft 203 has a thread, and the threaded side is locked by the first locking nut 104 / second locking nut 204 to prevent it from moving to the other side.

[0035] The working principle of this utility model is as follows:

[0036] The angle of the inclined roller is adjusted by the swing arm driving the lower swing block. Loosening the two swing arm locking nuts allows the swing arm to be manually pulled up or pressed down. The rise and fall of the swing arm position drives the swing transmission block to rotate slightly around the second rotating shaft, which in turn drives the lower swing block to rotate synchronously around the first rotating shaft, ultimately changing the rolling angle of the inclined roller.

[0037] Generally speaking, the adjustment requirements for springback during molding of new products and new materials can be basically met by varying the skew roller pressing angle within ±5°.

[0038] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A cold roll forming device with adjustable skew roll angle, comprising a roller support (3), a forming roller set and a skew roller (5), characterized in that: The inclined roller (5) is fixedly assembled on the cross shaft between the roller supports (3) through an adjustable mounting base (6), and the adjustable mounting base (6) comprises an inclined roller fixing mechanism (10), a swing rod adjusting mechanism (20) and a jackscrew locking mechanism (30); The inclined roller fixing mechanism (10) comprises an upper fixing block (101) and a lower swing block (102) which is rotationally matched with the upper fixing block (101) through a first pivot shaft (103), the upper fixing block (101) is provided with a cross shaft mounting hole (106) at the top, and the lower swing block (102) is provided with an inclined roller shaft mounting hole (107) at the lower part; the side of the inclined roller fixing mechanism (10) away from the inclined roller (5) is provided with the swing rod adjusting mechanism (20) for adjusting the angle of the inclined roller shaft, and the side of the inclined roller fixing mechanism (10) close to the inclined roller (5) is connected with the jackscrew locking mechanism (30) for locking the lower swing block (102).

2. The cold roll forming device with adjustable roll angle according to claim 1, characterized in that: The lower part of the upper fixing block (101) is provided with a groove, and the upper part of the lower swing block (102) is provided with a convex rib matched with the groove, and the convex rib of the lower swing block (102) is inserted into the groove of the upper fixing block (101) and is linked through the first pivot shaft (103).

3. The cold roll forming device with adjustable roll angle according to claim 2, characterized in that: The bottom surface of the upper fixing block (101) is provided as an arc-shaped bottom surface with the first pivot shaft (103) as the center.

4. The cold roll forming device with adjustable roll angle according to claim 3, characterized in that: The side of the lower swing block (102) connected with the inclined roller shaft (105) is provided as an inclined surface, and the inclined roller shaft mounting hole (107) is formed on the inclined surface side of the lower swing block (102).

5. The cold roll forming device with adjustable roll angle according to claim 1, characterized in that: The swing rod adjusting mechanism (20) comprises an L-shaped fixing seat (201), a swing transmission block (205), a swing rod (202) and a swing rod locking nut (206); the L-shaped fixing seat (201) is fixedly connected to the upper fixing block (101), and an open slot for accommodating the swing transmission block (205) is arranged at the middle part of the L-shaped fixing seat (201), the swing transmission block (205) is arranged in the open slot and is fixedly connected with the lower swing block (102), so that the swing transmission block (205) and the lower swing block (102) are followed; the upper end of the swing rod (202) is hinged to the swing transmission block (205), the lower end of the swing rod (202) penetrates through the bottom plate of the L-shaped fixing seat (201) and is locked through the swing rod locking nut (206).

6. A cold roll forming device with adjustable roll angle according to claim 5, characterized in that: The lower part of the swing transmission block (205) is provided with a groove for inserting the upper end of the swing rod (202), and the upper end of the swing rod (202) is inserted into the groove and is connected through the second pivot shaft (203).

7. The cold roll forming device with adjustable roll angle according to claim 1, characterized in that: The jackscrew locking mechanism (30) comprises a jackscrew fixing block (301) and a jackscrew (302), the jackscrew fixing block (301) is fixed to the upper fixing block (101) through a screw, and the jackscrew (302) penetrates through the jackscrew fixing block (301) transversely and presses the lower swing block (102).

8. The cold roll forming device with adjustable roll angle according to claim 7, characterized in that: The side of the jackscrew fixing block (301) close to the upper fixing block (101) is provided with a through slot (303) for avoiding the swing position of the lower swing block (102), and the jackscrew (302) penetrates through the through slot (303) transversely and presses the lower swing block (102).

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