Steel plate bending die

Abstract

The utility model relates to the technical field of steel plate bending machining, in particular to a steel plate bending die which comprises a workbench, a bending die body, a cut-off unit and a feeding unit. The working plane of the workbench is vertically arranged; the feeding unit, the cut-off unit and the bending die are arranged on the workbench from left to right. The bending die comprises a die core, an upper die unit, a left side lower die unit and a right side lower die unit. The upper die unit downwards presses the steel plate on the die core; pressing the steel plate into the shape of the upper part of the hoop; and the left lower die unit moves leftwards to bend the corner of the left side of the steel plate leftwards, and meanwhile, the right lower die unit moves rightwards to bend the corner of the right side of the steel plate rightwards to form two mounting lugs of the hoop. Through reasonable arrangement and cooperative work of the feeding unit, the cut-off unit and the bending die, the whole production process is smooth, the operation links of manual feeding and time waste are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate bending processing, in particular to a steel plate bending die. Background Art

[0002] In modern industrial production, steel plate bending is a common and important process, widely used in many fields such as construction, machinery manufacturing, and the automotive industry. As a commonly used connecting and fixing component, the production demand for clamps is also increasing.

[0003] When facing the production of clamps, traditional steel plate bending molds can only perform bending work. The steel plates need to be pre-processed into the appropriate size before they can be sent into the mold for processing. During the pre-processing, cutting the steel plates and sending the steel plates into the mold both require manual operation, which increases production time and labor costs.

[0004] Therefore, it is necessary to develop a new type of steel plate bending die to ensure smooth connection of feeding, cutting and bending operations without manual intervention. Utility Model Content

[0005] The purpose of the utility model is to provide a steel plate bending die, by which the feeding unit, the cutting unit and the bending die are reasonably arranged on the workbench and work together, so that the feeding, cutting and bending operations of the steel plate can be carried out smoothly in sequence, reducing unnecessary manual operations and improving production efficiency; thereby solving the technical problems in the background technology.

[0006] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: a steel plate bending die, comprising: a workbench, a bending die, a cutting unit and a feeding unit;

[0007] The cutting unit is used to cut off the steel plate to be processed delivered by the feeding unit;

[0008] The working plane of the workbench is arranged vertically; the feeding unit, the cutting unit and the bending die are arranged on the workbench from left to right;

[0009] The bending mold includes a mold core, an upper mold unit, a left lower mold unit and a right lower mold unit; the mold core is arranged in the middle of the bending mold; the upper mold unit is located directly above the mold core; the left lower mold unit and the right lower mold unit are arranged below the mold core in a mirror-symmetrical manner;

[0010] The upper mold unit presses the steel plate downward onto the mold core; the steel plate is pressed into the shape of the upper part of the clamp; the left lower mold unit moves to the left, and the left corner of the steel plate is bent to the left. At the same time, the right lower mold unit moves to the right, and the right corner of the steel plate is bent to the right to form two mounting ears of the clamp.

[0011] Furthermore, the upper die unit includes a first cylinder and an upper die block;

[0012] The upper module is provided with a U-shaped groove, the shape of which matches the shape of the mold core;

[0013] The first cylinder is vertically fixed on the workbench, and its telescopic end is fixedly connected to the upper module;

[0014] The upper die unit further includes a parallel guide rail in a vertical direction; the upper die block is slidably connected to the parallel guide rail and moves up and down along the parallel guide rail under the drive of the first cylinder.

[0015] Furthermore, the left lower mold unit and the right lower mold unit have the same structure, both including a cylinder and a module; specifically,

[0016] The left lower mold unit includes a second cylinder and a left module; the second cylinder is arranged horizontally, and the left module is driven by the second cylinder to move horizontally left and right;

[0017] The right lower mold unit includes a third cylinder and a right module; the third cylinder is horizontally arranged, and drives the right module to move horizontally left and right through the third cylinder.

[0018] Furthermore, the left module includes a connecting portion and a working portion; the connecting portion is a long strip structure, and its two ends are fixedly connected to the telescopic end of the second cylinder and the working portion respectively;

[0019] The working part is in the shape of a trapezoidal structure, the top of the working part is flat, and the left side of the working part has an inclined surface; the upper mold unit presses the steel plate downward onto the mold core; at this time, the left module moves to the left, and the left corner of the bottom of the steel plate is bent outward through the working part.

[0020] Furthermore, the cutting unit includes a cutting cylinder, a movable tool and a fixed tool;

[0021] The cut-off cylinder is fixed on the workbench and is arranged vertically; the telescopic end of the cut-off cylinder is connected to the movable tool;

[0022] The fixed tool is fixed on the workbench, and a horizontal through slot is provided in the middle of the fixed tool.

[0023] Furthermore, the feeding unit includes multiple groups of conveying rollers; each group of conveying rollers includes an upper roller and a lower roller symmetrically arranged up and down;

[0024] The upper roller and the lower roller are rotatably connected to the workbench; the power input ends of the upper roller and the lower roller are connected to the motor, and the motor provides power to drive the upper roller and the lower roller to rotate;

[0025] The steel plate is pressed between the upper and lower rollers and transported to the cutting unit as the upper and lower rollers rotate.

[0026] Beneficial effects

[0027] The utility model can accurately bend the steel plate into a hoop shape that meets the requirements through the design and coordination of the mold core, the upper mold unit, the lower mold unit and other components. The semicircular ring structure on the upper part of the hoop and the angle and shape of the mounting ear at the lower end can be accurately controlled.

[0028] The utility model makes the whole production process smooth through the reasonable arrangement and coordinated work of the feeding unit, the cutting unit and the bending die, reduces the operation links and time waste of manual feeding, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 This is a schematic structural diagram of the initial state of the bending die portion of the present invention;

[0032] Figure 3 This is a schematic diagram of the working state structure of the bending die of the utility model;

[0033] Figure 4 yes Figure 3 A partial enlarged view of

[0034] Figure 5 This is a structural diagram of the bending die of the utility model in a partially completed working state;

[0035] Figure 6 This is a schematic diagram of the cutting unit, feeding unit and finished clamp of the utility model;

[0036] Figure 7 It is a structural diagram of the left module of the present utility model.

[0037] In the picture:

[0038] 1. Workbench; 2. Cutting unit; 3. Feeding unit; 4. Mold core; 5. Upper mold unit; 6. Left lower mold unit; 7. Right lower mold unit; 8. First cylinder; 9. Upper die block; 10. Second cylinder; 11. Left die block; 12. Connecting part; 13. Working part; 14. Third cylinder; 15. Right die block; 16. Cutting cylinder; 17. Movable tool; 18. Fixed tool; 19. Upper roller; 20. Lower roller; 21. Steel plate. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] The purpose of the utility model is to design a bending die for processing steel plates into clamps of specific shapes.

[0041] In order to achieve the above purpose, the present invention provides the following technical solutions: Figure 1-7 As shown, a steel plate 21 bending die comprises: a workbench 1, a bending die, a cutting unit 2 and a feeding unit 3; the cutting unit 2 is used to cut the steel plate 21 to be processed conveyed by the feeding unit 3.

[0042] The steel plate 21 is transferred from the feeding unit 3 to the processing position, cut by the cutting unit 2, and then pressed and bent by the bending die;

[0043] The working plane of the workbench 1 is vertically arranged; the feeding unit 3, the cutting unit 2 and the bending die are arranged on the workbench 1 from left to right in sequence;

[0044] The bending mold includes a mold core 4, an upper mold unit 5, a left lower mold unit 6 and a right lower mold unit 7; the mold core 4 is arranged in the middle of the bending mold; the upper mold unit 5 is located directly above the mold core 4; the left lower mold unit 6 and the right lower mold unit 7 are arranged below the mold core 4 in a mirror-symmetrical manner;

[0045] The bending die is used to produce clamps; the upper part of the clamp produced is a semi-circular ring structure, and the two bottom feet at the lower end of the clamp are bent outward to form a mounting ear.

[0046] The upper die unit 5 is provided with a U-shaped groove, and the corresponding die core 4 is in the shape of a structure in which the upper part is semicircular and the lower part is trapezoidal. The upper die unit 5 presses the steel plate 21 downward onto the die core 4, so that the steel plate 21 is pressed into a U-shape to form the shape of the upper part of the clamp; at this time, the left lower die unit 6 moves to the left, and bends the left corner of the steel plate 21 to the left, while the right lower die unit 7 moves to the right, and bends the right corner of the steel plate 21 to the right, so that the two corners of the steel plate 21 are bent outward by 90 degrees respectively, thereby forming two mounting ears of the clamp;

[0047] Furthermore, the upper die unit 5 includes a first cylinder 8 and an upper die block 9;

[0048] The upper die block 9 is provided with a U-shaped groove, which cooperates with the die core 4 to press into the shape of the upper part of the clamp;

[0049] The first cylinder 8 is fixed on the workbench 1, and its telescopic end is fixedly connected to the upper module 9;

[0050] The upper mold unit 5 also includes vertical parallel guide rails fixed to the workbench 1. The upper die block 9 is slidably connected to these rails. During use, the first cylinder 8 of the upper mold unit 5 is activated, pushing the upper die block 9 downward along the rails. The U-shaped groove of the upper die block 9 cooperates with the mold core 4, pressing the steel plate 21 onto the mold core 4. The semicircular portion of the mold core 4 and the upper die block 9 compress the steel plate 21 into a U-shape, forming the semicircular ring shape of the upper portion of the clamp.

[0051] Furthermore, the left lower mold unit 6 and the right lower mold unit 7 have the same structure; both include a cylinder and a module; specifically,

[0052] The left lower die unit 6 includes a second cylinder 10 and a left die block 11;

[0053] The second cylinder 10 is arranged horizontally, and drives the left module 11 to move horizontally left and right;

[0054] The right lower mold unit 7 includes a third cylinder 14 and a right mold block 15 ; the third cylinder 14 is arranged horizontally, and the right mold block 15 is driven by the third cylinder 14 to move left and right.

[0055] Furthermore, the left module 11 includes a connecting portion 12 and a working portion 13; the connecting portion 12 is a long strip structure, and its two ends are fixedly connected to the telescopic end of the second cylinder 10 and the working portion 13 respectively;

[0056] The working part 13 is initially arranged at the bottom of the mold core 4; the shape of the working part 13 is a trapezoidal structure, the top of the working part 13 is flat, and the left side of the working part 13 has an inclined surface; when in use, the upper mold unit 5 presses the steel plate 21 downward onto the mold core 4; the steel plate 21 is pressed into a U-shape to form the shape of the upper part of the clamp; at this time, the left module 11 moves to the left, and the inclined surface of the working part 13 first contacts the left corner of the bottom of the steel plate 21, and gradually bends the left corner of the bottom of the steel plate 21 to the left; until the top of the working part 13 contacts the left corner of the bottom of the steel plate 21 , the top of the working part 13 bends the left corner of the bottom of the steel plate 21 to 90 degrees; it should be noted that the bottom surface of the upper module 9 is flat. When the upper module 9 presses the steel plate 21 downward onto the mold core 4, the bottom surface of the upper module 9 and the top of the working part 13 are parallel to each other, and the distance between the two is slightly greater than the thickness of the steel plate 21; when the left module 11 moves to the left to the final position, the top of the left module 11 and the bottom surface of the upper module 9 restrict the left corner of the bottom of the steel plate 21 between the two, so that the left corner of the bottom of the steel plate 21 appears to be bent outward 90 degrees;

[0057] The third cylinder 14 drives the right module 15 to move rightward, bending the right corner of the steel plate 21 90 degrees to the right. Ultimately, the bending of the left and right modules 11 and 15 forms the two mounting ears of the clamp. Because the structure and operating principle of the right module 15 are similar to those of the left module 11, except for the opposite direction, the specific structure and operating principle of the right module 15 will not be repeated in this application.

[0058] Furthermore, the cutting unit 2 includes a cutting cylinder 16 , a movable cutter 17 and a fixed cutter 18 ;

[0059] The shutoff cylinder 16 is fixed on the workbench 1 and is arranged vertically; the telescopic end of the shutoff cylinder 16 is connected to the movable tool 17;

[0060] The fixed tool 18 is fixed on the workbench 1, and a horizontal through slot is opened in the middle of the fixed tool 18; the width of the through slot is equal to the thickness of the steel plate 21;

[0061] During use, the movable cutter 17 is driven by the cutting cylinder 16 to move downward and cooperate with the fixed cutter 18 to cut the steel plate 21. Since the width of the through slot is equal to the thickness of the steel plate 21, the part of the steel plate 21 located in the through slot will be restricted by the inner wall of the through slot, preventing the steel plate 21 from moving up and down during the cutting process; and during the cutting operation, the feed unit 3 stops moving and the steel plate 21 is clamped by the feed unit 3 to prevent the steel plate 21 from moving left and right during the cutting process, thus ensuring the accuracy of the cutting process; the movable cutter 17 moves in accordance with the lateral movement of the fixed cutter 18 during the movement process, and can conveniently cut the steel plate 21 that extends out of the through slot.

[0062] It should be noted that before the truncation work begins, the feeding unit 3 first conveys a section of steel plate 21 to be processed to between the bottom surface of the upper module 9 and the top of the mold core 4, and then the feeding unit 3 stops working, and the first cylinder 8 drives the upper module 9 to move downward and slightly presses down on the steel plate 21. At this time, the steel plate 21 is fixed between the bottom surface of the upper module 9 and the top of the mold core 4. The advantage of this step is that when the truncation work is completed, the truncated steel plate 21 will not lose control and will be fixed by the bottom surface of the upper module 9 and the top of the mold core 4, which is convenient for the next step of profiling. After the truncation work is completed, the first cylinder 8 drives the upper module 9 to continue to move downward until the steel plate 21 is completely pressed on the mold core 4, completing the profiling work on the upper part of the clamp.

[0063] Furthermore, the feeding unit 3 includes multiple groups of conveying rollers; each group of conveying rollers includes an upper roller 19 and a lower roller 20 that are symmetrically arranged in the upper and lower parts.

[0064] The upper roller 19 and the lower roller 20 are rotatably connected to the workbench 1. The power input terminals of the upper and lower rollers 19 and 20 are connected to a motor, which provides power to drive the upper and lower rollers 19 and 20 to rotate. The friction between the upper and lower rollers 19 and 20 clamps the steel plate 21 and conveys it forward. The motor speed can be adjusted as needed to control the feed rate of the steel plate 21 to meet different production requirements.

[0065] The steel plate 21 is pressed between the upper roller 19 and the lower roller 20 and is transported to the cutting unit 2 as the upper roller 19 and the lower roller 20 rotate. It should be noted that since the length of the steel plate 21 required for each clamp is equal, the transmission of the feeding unit 3 is intermittent, that is, it stops for a period of time after each length of steel plate 21 required for a clamp is delivered. This period of time is used for cutting the steel plate 21 and processing the bending mold. After the processing is completed, the next transmission cycle begins.

[0066] The working principle and process are as follows:

[0067] First, if Figure 2 As shown, the motor of the feeding unit 3 is started, and the motor drives the upper roller 19 and the lower roller 20 to start rotating, and the steel plate 21 is placed between the upper roller 19 and the lower roller 20 of the feeding unit 3. The steel plate 21 is clamped under the action of friction and transported to the cutting unit 2 as the upper roller 19 and the lower roller 20 rotate.

[0068] Then, when the front end of the steel plate 21 reaches the appropriate position of the cutting unit 2, the motor of the feeding unit 3 is turned off to stop the feeding. The cutting cylinder 16 of the cutting unit 2 is started, and the telescopic end of the cutting cylinder 16 drives the movable tool 17 to move downward. The movable tool 17 cooperates with the fixed tool 18 to cut the steel plate 21.

[0069] At this time, the cut steel plate 21 is located at the bending die, and the first cylinder 8 of the upper die unit 5 is started, as shown in FIG. Figure 3 and 4 As shown, the first cylinder 8 pushes the upper die block 9 to move downward along the parallel guide rails, pressing the steel plate 21 onto the die core 4, so that the steel plate 21 is pressed into a U shape to form the shape of the upper part of the hoop.

[0070] Next, the second cylinder 10 of the left lower die unit 6 is activated, which drives the left die block 11 to move leftward, bending the left corner of the steel plate 21 to the left. At the same time, the third cylinder 14 of the right lower die unit 7 is activated, bending the right corner of the steel plate 21 to the right, and finally forming the two mounting ears of the clamp.

[0071] Finally, after the bending operation is completed, the processed clamp is removed from the mold by manual removal or by setting an automatic ejection device.

[0072] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A steel plate bending die, characterized in that: include: A workbench (1), a bending die, a cutting unit (2) and a feeding unit (3); The cutting unit (2) is used to cut off the steel plate (21) to be processed delivered by the feeding unit (3); The working plane of the workbench (1) is arranged vertically; the feeding unit (3), the cutting unit (2) and the bending die are arranged on the workbench (1) in sequence from left to right; The bending die comprises a die core (4), an upper die unit (5), a left lower die unit (6) and a right lower die unit (7); the die core (4) is arranged in the middle of the bending die; the upper die unit (5) is located directly above the die core (4); the left lower die unit (6) and the right lower die unit (7) are arranged below the die core (4) in a mirror-symmetrical manner; The upper die unit (5) presses the steel plate (21) downward onto the die core (4); the steel plate (21) is pressed into the shape of the upper part of the hoop; the left lower die unit (6) moves leftward to bend the left corner of the steel plate (21) to the left, and at the same time, the right lower die unit (7) moves rightward to bend the right corner of the steel plate (21) to the right, thereby forming two mounting ears of the hoop.

2. The steel plate bending die according to claim 1, characterized in that: The upper die unit (5) comprises a first cylinder (8) and an upper die block (9); The upper module (9) is provided with a U-shaped groove, the shape of which matches the shape of the mold core (4); The first cylinder (8) is fixed on the workbench (1), and its telescopic end is fixedly connected to the upper module (9); The upper die unit (5) further comprises a parallel guide rail in the vertical direction; the upper die block (9) is slidably connected to the parallel guide rail and moves up and down along the parallel guide rail under the drive of the first cylinder (8).

3. The steel plate bending die according to claim 2, characterized in that: The left lower die unit (6) and the right lower die unit (7) have the same structure, both comprising a cylinder and a module; The left lower die unit (6) comprises a second cylinder (10) and a left die block (11); the second cylinder (10) is arranged horizontally, and the left die block (11) is driven by the second cylinder (10) to move horizontally; The right lower die unit (7) comprises a third cylinder (14) and a right die block (15); the third cylinder (14) is arranged horizontally, and the right die block (15) is driven by the third cylinder (14) to move horizontally.

4. The steel plate bending die according to claim 3, characterized in that: The left module (11) includes a connecting portion (12) and a working portion (13); the connecting portion (12) is a long strip structure, and its two ends are fixedly connected to the telescopic end of the second cylinder (10) and the working portion (13) respectively; The working portion (13) is in the shape of a trapezoidal structure, the top of the working portion (13) is flat, and the left side of the working portion (13) has an inclined surface; the upper die unit (5) presses the steel plate (21) downward onto the die core (4); at this time, the left die block (11) moves to the left, and the left corner of the bottom of the steel plate (21) is bent outward through the working portion (13).

5. The steel plate bending die according to claim 1, characterized in that: The cutting unit (2) comprises a cutting cylinder (16), a movable tool (17) and a fixed tool (18); The shutoff cylinder (16) is fixed on the workbench (1) and is vertically arranged; the telescopic end of the shutoff cylinder (16) is connected to the movable tool (17); The fixed tool (18) is fixed on the workbench (1), and a horizontal through slot is provided in the middle of the fixed tool (18).

6. The steel plate bending die according to claim 1, characterized in that: The feeding unit (3) includes multiple groups of conveying rollers; each group of conveying rollers includes an upper roller (19) and a lower roller (20) symmetrically arranged in an upper and lower direction; The upper roller (19) and the lower roller (20) are rotatably connected to the workbench (1); the power input ends of the upper roller (19) and the lower roller (20) are connected to the motor, and the motor provides power to drive the upper roller (19) and the lower roller (20) to rotate; The steel plate (21) is pressed between the upper roller (19) and the lower roller (20), and is transported to the cutting unit (2) as the upper roller (19) and the lower roller (20) rotate.

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