Press brake

Abstract

The utility model discloses a pressure bending machine includes opposite left stand and right stand, and the left stand and right stand between from top to bottom are provided with upper crossbeam, bending beam and lower crossbeam respectively, and the bottom of upper crossbeam is connected with a pair of hydraulic cylinder through flange plate, and the hydraulic cylinder is connected with hydraulic pump station through pipeline, and the top of bending beam is connected with the output end of hydraulic cylinder through flange plate, and the top of lower crossbeam is movably connected with a pair of backrests in bending beam lower pressure position, and the processing space of accommodating material to be processed is formed between the backrests, and the bottom of backrest is connected with movable pulley block, and movable pulley block drives corresponding backrest to adjust the interval between a pair of backrests, and one end of backrest is provided with sample board module, and sample board module is movably connected with lower crossbeam. The utility model solves the problem of the prior art that the backrest is fixed and cannot be applied to bending of different size materials to be processed.

Description

Technical Field

[0001] This utility model belongs to the technical field of stamping machinery and equipment, specifically relating to pressure bending machines. Background Technology

[0002] A press is a sophisticated, general-purpose machine renowned for its versatility and high production efficiency. It is widely used in various processes such as cutting, punching, blanking, bending, riveting, and forming. By applying strong pressure, the press causes metal blanks to undergo plastic deformation or even fracture, thereby producing the desired parts. In the field of workshop processing equipment, pressure bending machines are widely used, enabling materials to undergo plastic deformation during processing.

[0003] The prior art disclosed in CN218982767U is a metal bending machine, which includes a fixed processing table, supporting feet, a lower bending platform, a guide support column, a fixed crossbeam, an upper bending platform, an auxiliary heating structure, and an ejection structure. The upper bending platform is driven by a downward hydraulic cylinder to press down, and in conjunction with the lower bending platform, it can bend metal sheets under pressure. However, in practical use, because the lower bending platform is of a fixed size, this solution cannot be applied to bending materials of different sizes (thicknesses). Furthermore, when different bending angles are required, the bending angle control relies entirely on the operator's experience, increasing the operator's workload. On the other hand, it reduces the quality of the finished product, increases production costs, and reduces production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a pressure bending machine that solves the problem in the prior art that materials of different sizes cannot be bent due to the fixed support platform.

[0005] The technical solution adopted by this utility model is a pressure bending machine, including a left column and a right column arranged opposite to each other. An upper crossbeam, a bending beam and a lower crossbeam are respectively arranged between the left column and the right column from top to bottom. A pair of hydraulic cylinders are connected to the bottom end of the upper crossbeam through a flange. The hydraulic cylinders are connected to a hydraulic pump station through pipelines. The top end of the bending beam is connected to the output end of the hydraulic cylinder through a flange.

[0006] The top of the lower crossbeam is movably connected to a pair of support platforms relative to the downward pressing position of the bending beam. The support platforms form a processing space to accommodate the material to be processed. The bottom of the support platforms is connected to a movable pulley system, which drives the corresponding support platforms to adjust the distance between the pair of support platforms. A template module is set at one end of the support platform, and the template module is movably connected to the lower crossbeam.

[0007] The present invention is further characterized in that,

[0008] The movable pulley block includes several sets of connecting blocks, which are arranged in an array at the bottom of the platform. The connecting blocks are located in the receiving cavity opened at the top of the lower crossbeam.

[0009] The connecting block is cross-shaped, with rollers movably connected to both ends of the connecting block. A threaded rod is vertically connected to the center of the connecting block, and one end of the threaded rod passes through the lower crossbeam and the bottom of the platform, where a fixing nut is movably connected.

[0010] Several adjustment slots are opened on the top of the lower crossbeam along the direction of movement of the platform, and each threaded rod passes through the corresponding adjustment slot.

[0011] A pin is provided on the support platform. The pin passes through the support platform and is inserted into the receiving cavity of the lower crossbeam. Several insertion holes are opened on the top of the lower crossbeam relative to the pin position. The insertion holes are distributed in a straight line along the moving direction of the support platform, and the spacing between adjacent insertion holes is equal.

[0012] The template module includes a pair of L-shaped back plates, with the inner sides of the pair of L-shaped back plates facing away from each other, and the L-shaped back plates are movably connected to the lower crossbeam; several triangular inserts are fixedly connected to the outer side of the L-shaped back plates, and the several triangular inserts are evenly distributed along the long side of the L-shaped back plates, with the spacing between adjacent triangular inserts equal to the thickness of the triangular inserts.

[0013] The triangular inserts on one side of the L-shaped back plate are staggered with the triangular inserts on the other side of the L-shaped back plate. By adjusting the distance between the triangular inserts on both sides, the triangular inserts on both sides can be interlocked to form "V" shaped grooves with different groove depths.

[0014] The bottom of the lower crossbeam relative to the L-shaped back plate has a movable groove, and a bolt passes through the movable groove. The head of the bolt is located in the receiving cavity, and the other end of the bolt passes through the L-shaped back plate to the inside of the L-shaped back plate and is connected to a nut.

[0015] A pair of limiting blocks are fixedly connected to the inner sides of the left and right columns at the positions opposite to the bending beams, forming a limiting groove between the pair of limiting blocks. The two sides of the bending beam are movably connected to the inner side of the limiting groove.

[0016] A ruler is connected to the inside of the right column. The bottom of the ruler is zero and is flush with the top of the lower crossbeam. A pointer is fixedly connected to the side of the bent beam near the right column, and the pointer is matched with the ruler.

[0017] The beneficial effects of this utility model are:

[0018] (1) The pressure bending machine of this utility model sets a movable pulley group at the bottom of the support platform and connects the movable pulley group to the support platform. An adjustment groove is opened at the top of the lower crossbeam to provide the movable pulley group with movement space, thereby realizing the adjustment of the distance between the two support platforms. By adjusting the different distances between the support platforms, different sizes of materials to be processed can be adapted.

[0019] Meanwhile, after the backrest is adjusted to the designated position, the backrest and the lower crossbeam can be fixed by inserting the pin into the socket, thus preventing the backrest from being squeezed and displaced during the bending process.

[0020] (2) The pressure bending machine of this utility model has a template component at one end of the processing area formed by the platform. By adjusting the distance between a pair of template modules, the depth of the triangular inserts between them is different, thereby forming template plates with different bending angles. During the bending process under the bending beam, the bending angle of the material can be accurately completed by referring to the angle of the template plate, which greatly improves the work efficiency.

[0021] Meanwhile, a scale is installed on one side of the column, with the bottom of the scale flush with the lower crossbeam. A pointer adapted to the scale is installed on the bending beam. By observing the distance the pointer descends during the bending beam's descent, the bending angle can be precisely controlled. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the pressure bending machine of this utility model;

[0023] Figure 2 This is a front sectional view of the pressure bending machine of this utility model;

[0024] Figure 3 This is a schematic diagram of the connection structure between the hydraulic cylinder and the bending beam in the pressure bending machine of this utility model;

[0025] Figure 4 This is a schematic diagram of the template module in the pressure bending machine of this utility model;

[0026] Figure 5 This is a schematic diagram of the moving pulley block in the pressure bending machine of this utility model;

[0027] Figure 6 This is a top view of the lower crossbeam in the hydraulic bending machine of this utility model;

[0028] Figure 7 This is a side view of the support platform in the hydraulic bending machine of this utility model;

[0029] Figure 8 This is a utility model Figure 1 Enlarged structural diagram at point A;

[0030] Figure 9 This is a utility model Figure 2 A magnified structural diagram at point B in the middle.

[0031] In the diagram, 1. Upper crossbeam, 2. Hydraulic cylinder, 3. Bending beam, 4. Lower crossbeam, 5. Support platform, 6. Left column, 7. Right column, 8. Limiting block, 9. Limiting groove, 10. Template module, 11. Scale, 12. Pointer, 13. Moving pulley block, 14. Insertion hole, 15. Roller, 16. Threaded rod, 17. Fixing nut, 18. Pin, 19. Connecting block, 20. Receiving cavity, 21. L-shaped back plate, 22. Triangular insert plate, 23. Adjustment groove, 24. Moving groove, 25. Hydraulic pump station. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] This utility model is a pressure bending machine, such as Figure 1 and Figure 2 As shown, it includes a left column 6 and a right column 7 arranged opposite each other. Between the left column 6 and the right column 7, from top to bottom, are an upper crossbeam 1, a bent beam 3, and a lower crossbeam 4, respectively. The bottom end of the upper crossbeam 1 is connected to a pair of hydraulic cylinders 2 via a flange. The hydraulic cylinders 2 are connected to a hydraulic pump station 25 via pipelines. Figure 3 As shown, the top of the bending beam 3 is connected to the output end of the hydraulic cylinder 2 via a flange.

[0035] The top of the lower crossbeam 4 is movably connected to a pair of backing platforms 5 at the downward pressing position relative to the bending beam 3. The backing platforms 5 form a processing space to accommodate the material to be processed. That is, the backing platforms 5 on both sides can form molds with different processing space sizes by adjusting the distance between them. When it is necessary to process larger or thicker materials, the bending pressure required can be reduced and the work efficiency can be improved by increasing the distance between the backing platforms 5 on both sides. When it is necessary to process smaller or thinner materials, the accuracy of the bending angle can be increased by reducing the distance between the backing platforms 5 on both sides.

[0036] The bottom end of the support platform 5 is connected to a movable pulley block 13, which drives the corresponding support platform 5 to adjust the distance between a pair of support platforms 5; a template module 10 is set at one end of the support platform 5, and the template module 10 is movably connected to the lower crossbeam 4. The purpose of setting the template module 10 is to know the required bending angle in advance by referring to the template module 10 when controlling the hydraulic cylinder 2 to drive the bending beam to descend, thereby improving work efficiency.

[0037] In this embodiment, when it is necessary to bend the material to be processed, the material is placed above the support platform 5, and the hydraulic cylinder 2 is driven to move the bending beam 3 downward to bend the material.

[0038] Example 2

[0039] The pressure bending machine of this embodiment includes a left column 6 and a right column 7 arranged opposite to each other. An upper crossbeam 1, a bending beam 3 and a lower crossbeam 4 are respectively arranged between the left column 6 and the right column 7 from top to bottom. The bottom end of the upper crossbeam 1 is connected to a pair of hydraulic cylinders 2 through a flange. The hydraulic cylinders 2 are connected to a hydraulic pump station 25 through pipelines. The top end of the bending beam 3 is connected to the output end of the hydraulic cylinders 2 through a flange.

[0040] The top of the lower crossbeam 4 is movably connected to a pair of support platforms 5 relative to the downward pressing position of the bent beam 3. The bottom of the support platform 5 is connected to a movable pulley group 13. The movable pulley group 13 is located in the receiving cavity 20 opened at the top of the lower crossbeam 4. The movable pulley group 13 drives the corresponding support platform 5 to adjust the distance between the pair of support platforms 5. A template module 10 is provided at one end of the support platform 5.

[0041] like Figure 4 As shown, the template module 10 includes a pair of L-shaped back plates 21, with the inner sides of the pair of L-shaped back plates 21 facing away from each other, and the L-shaped back plates 21 are movably connected to the lower crossbeam 4; a number of triangular insert plates 22 are fixedly connected to the outer side of the L-shaped back plates 21, and the number of triangular insert plates 22 are evenly distributed along the long side of the L-shaped back plates 21, and the distance between adjacent triangular insert plates 22 is equal to the thickness of the triangular insert plate 22.

[0042] The triangular inserts 22 distributed on one side of the L-shaped back plate 21 are staggered with the triangular inserts 22 distributed on the other side of the L-shaped back plate 21. The spacing between the two triangular inserts 22 is adjusted so that the two triangular inserts 22 are interlocked to form "V" shaped grooves with different groove depths.

[0043] The purpose of using the triangular insert plate 22 in this embodiment is that the triangular insert plate 22 itself has a bevel. After the triangular insert plates on both sides are inserted into each other, a "V" shaped groove will be formed because the bevels on both sides are opposite. The "V" shaped groove with different groove depths can be used as a reference for different bending angles.

[0044] Example 3

[0045] This embodiment is based on embodiment 2, such as Figure 6 As shown, in this embodiment, the lower crossbeam 4 has a moving groove 24 at the bottom relative to the L-shaped back plate 21. A bolt passes through the moving groove 24, with the head of the bolt located in the receiving cavity 20. The other end of the bolt passes through the L-shaped back plate 21 and is connected to a nut on the inner side of the L-shaped back plate 21.

[0046] When it is necessary to adjust the distance between the two L-shaped back plates 21, first loosen the nut on the bolt, then push the bolt to move the L-shaped back plate 21 along the horizontal direction of the moving groove 24. After moving to the designated position, tighten the nut. Since the head of the bolt is located in the receiving cavity 20, the L-shaped back plate 21 is fixed in position.

[0047] Example 4

[0048] This embodiment of the pressure bending machine includes a left column 6 and a right column 7 arranged opposite each other. From top to bottom, an upper crossbeam 1, a bending beam 3, and a lower crossbeam 4 are respectively arranged between the left column 6 and the right column 7. The bottom end of the upper crossbeam 1 is connected to a pair of hydraulic cylinders 2 via a flange. The hydraulic cylinders 2 are connected to a hydraulic pump station 25 via pipelines. The top end of the bending beam 3 is connected to the output end of the hydraulic cylinders 2 via a flange. This facilitates the disassembly and replacement of different models of bending beams 3. Connecting the hydraulic cylinders 2 to the bending beam 3 via flanges makes the replacement of the bending beam 3 simpler and faster, effectively improving work efficiency. The bending beam 3 is made of high-strength alloy steel and undergoes precision machining to ensure stability and durability in high-load working environments.

[0049] The top of the lower crossbeam 4 is movably connected to a pair of support platforms 5 relative to the downward pressing position of the bending beam 3. The bottom of the support platform 5 is connected to a movable pulley group 13. The movable pulley group 13 drives the corresponding support platform 5 to adjust the distance between the pair of support platforms 5. A template module 10 is set at one end of the support platform 5.

[0050] The template module 10 includes a pair of L-shaped back plates 21, with the inner sides of the pair of L-shaped back plates 21 facing away from each other, and the L-shaped back plates 21 are movably connected to the lower crossbeam 4; a number of triangular insert plates 22 are fixedly connected to the outer side of the L-shaped back plates 21, and the number of triangular insert plates 22 are evenly distributed along the long side of the L-shaped back plates 21, with the spacing between adjacent triangular insert plates 22 being equal to the thickness of the triangular insert plate 22.

[0051] The triangular inserts 22 distributed on one side of the L-shaped back plate 21 are staggered with the triangular inserts 22 distributed on the other side of the L-shaped back plate 21. The spacing between the two triangular inserts 22 is adjusted so that the two triangular inserts 22 are interlocked to form "V" shaped grooves with different groove depths.

[0052] like Figure 5 As shown, the movable pulley block 13 includes several sets of connecting blocks 19, which are cross-shaped. The several sets of connecting blocks 19 are arranged in an array at the bottom of the platform 5. The connecting blocks 19 are located in the receiving cavity 20 opened at the top of the lower crossbeam 4.

[0053] Rollers 15 are movably connected to both ends of the connecting block 19. Specifically, connecting shafts pass through both ends of the connecting block 19, and the connecting shafts are movably connected to the connecting block 19. Rollers 15 are movably connected to both ends of the connecting shafts.

[0054] A threaded rod 16 is vertically connected to the center of the connecting block 19. One end of the threaded rod 16 passes through the bottom of the lower crossbeam 4 and the support platform 5 and is movably connected to a fixing nut 17.

[0055] Furthermore, such as Figure 6 As shown, the top of the lower crossbeam 4 has several adjustment grooves 23 along the moving direction of the platform 5, and each threaded rod 16 passes through the corresponding adjustment groove 23.

[0056] like Figure 7 As shown, when it is necessary to adjust the distance between the two side platforms 5, simply loosen the fixing nut 17, then push the platform 5 to the designated position under the action of the movable pulley group 13, and then tighten the fixing nut 17 to complete the position fixation of the platform 5. The setting of the movable pulley group 13 makes the adjustment of the platform 5 simpler and faster, effectively shortening the processing preparation time.

[0057] Example 5

[0058] Based on Embodiment 4 above, this embodiment includes a pin 18 on the support platform 5. The pin 18 penetrates the support platform 5 and inserts into the receiving cavity 20 of the lower crossbeam 4. Figure 6 As shown, the top of the lower crossbeam 4 has several insertion holes 14 at the position opposite to the pin 18. The insertion holes 14 are arranged in a straight line along the moving direction of the platform 5, and the spacing between adjacent insertion holes 14 is equal.

[0059] Inserting the pin 18 into the socket 14 can form a secondary fixation between the backrest 5 and the lower crossbeam 4, preventing the backrest from being squeezed and displaced during bending.

[0060] Example 6

[0061] This embodiment is based on the above embodiment, such as... Figure 8 As shown, a pair of limiting blocks 8 are fixedly connected to the inner sides of the left column 6 and the right column 7 relative to the bending beam 3, and a limiting groove 9 is formed between the pair of limiting blocks 8. The two sides of the bending beam 3 are movably connected to the inner side of the limiting groove 9.

[0062] This example demonstrates how setting a limit block 8 can effectively restrict the path of the bending beam 3 when it moves up and down, ensuring that the bending beam 3 can only move back and forth without swaying back and forth, thus improving the accuracy and efficiency of the machining process.

[0063] Example 7

[0064] This embodiment is based on the above embodiment, such as... Figure 9As shown, a scale 11 is connected to the inner side of the right column 7. The bottom of the scale 11 is at zero, and the bottom of the scale 11 is flush with the top of the lower crossbeam 4. A pointer 12 is fixedly connected to the bending beam 3 near the right column 7, and the pointer 12 is compatible with the scale 11. In this embodiment, the scale 11 can be used to precisely control the descent height of the bending beam 3 during operation, thereby improving the precision of the processing.

[0065] Finally, it should be noted that in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure bending machine, characterized in that, It includes a left column (6) and a right column (7) arranged opposite to each other. An upper crossbeam (1), a bent beam (3) and a lower crossbeam (4) are respectively arranged between the left column (6) and the right column (7) from top to bottom. The bottom end of the upper crossbeam (1) is connected to a pair of hydraulic cylinders (2) through a flange. The hydraulic cylinders (2) are connected to a hydraulic pump station (25) through a pipeline. The top end of the bent beam (3) is connected to the output end of the hydraulic cylinder (2) through a flange. The top of the lower crossbeam (4) is movably connected to a pair of backrests (5) relative to the downward pressing position of the bending beam (3). A processing space for accommodating the material to be processed is formed between the backrests (5). The bottom of the backrests (5) is connected to a movable pulley group (13). The movable pulley group (13) drives the corresponding backrests (5) to adjust the distance between the pair of backrests (5). A template module (10) is provided at one end of the platform (5), and the template module (10) is movably connected to the lower crossbeam (4).

2. The pressure bending machine according to claim 1, characterized in that, The movable pulley group (13) includes several sets of connecting blocks (19), which are arranged in an array at the bottom of the platform (5). The connecting blocks (19) are located in the receiving cavity (20) opened at the top of the lower crossbeam (4). The connecting block (19) is cross-shaped, and rollers (15) are movably connected to both ends of the connecting block (19). A threaded rod (16) is vertically connected to the center of the connecting block (19). One end of the threaded rod (16) passes through the bottom of the lower crossbeam (4) and the support platform (5) and is movably connected to a fixing nut (17).

3. The pressure bending machine according to claim 2, characterized in that, The top of the lower crossbeam (4) has several adjustment grooves (23) along the moving direction of the platform (5), and each threaded rod (16) passes through the corresponding adjustment groove (23).

4. The pressure bending machine according to claim 2, characterized in that, A pin (18) is provided on the support platform (5). The pin (18) passes through the support platform (5) and is inserted into the receiving cavity (20) of the lower crossbeam (4). Several insertion holes (14) are opened on the top of the lower crossbeam (4) relative to the pin (18). The several insertion holes (14) are distributed in a straight line along the moving direction of the support platform (5), and the spacing between adjacent insertion holes (14) is equal.

5. The pressure bending machine according to claim 1, characterized in that, The template module (10) includes a pair of L-shaped back plates (21), with the inner sides of the pair of L-shaped back plates (21) facing away from each other, and the L-shaped back plates (21) are movably connected to the lower crossbeam (4); a number of triangular insert plates (22) are fixedly connected to the outer side of the L-shaped back plates (21), and the number of triangular insert plates (22) are evenly distributed along the long side of the L-shaped back plates (21), and the distance between adjacent triangular insert plates (22) is equal to the thickness of the triangular insert plate (22); The triangular inserts (22) distributed on one side of the L-shaped back plate (21) are offset from the triangular inserts (22) distributed on the other side of the L-shaped back plate (21). The spacing between the two triangular inserts (22) is adjusted so that the two triangular inserts (22) are interlocked to form "V" shaped grooves with different groove depths.

6. The pressure bending machine according to claim 5, characterized in that, The lower crossbeam (4) has a moving groove (24) at the bottom of the L-shaped back plate (21). A bolt passes through the moving groove (24), with the head of the bolt located in the receiving cavity (20). The other end of the bolt passes through the L-shaped back plate (21) and is connected to a nut on the inner side of the L-shaped back plate (21).

7. The pressure bending machine according to claim 1, characterized in that, The left column (6) and the right column (7) are respectively fixedly connected to a pair of limiting blocks (8) at the position opposite to the bending beam (3), and a limiting groove (9) is formed between the pair of limiting blocks (8). The two sides of the bending beam (3) are movably connected to the inside of the limiting groove (9).

8. The pressure bending machine according to claim 1, characterized in that, A scale (11) is connected to the inner side of the right column (7). The bottom of the scale (11) is zero and the bottom of the scale (11) is flush with the top of the lower crossbeam (4). A pointer (12) is fixedly connected to the side of the bent beam (3) near the right column (7). The pointer (12) is compatible with the scale (11).

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