Metal plate bending processing device

Abstract

The invention provides a metal plate bending machining device which comprises a machining table. A lower die, a supporting frame, an upper supporting plate, a material frame and the like are arranged on the machining table. The upper end face of the upper supporting plate is flush with the upper end face of the lower die, a notch matched with the lower die in size is formed in the upper supporting plate, a stamping head matched with the lower die is arranged on the supporting frame, a short shaft is arranged on one side of the supporting frame, and a gear I is arranged on the short shaft. The spur rack I, the gear I and the like finally drive the spur rack II to run along the guide rod, one-way power transmission between the punching head and the spur rack II can be achieved through cooperation of the one-way bearing and the long spring, and when the punching head rises, the spur rack II drives the shifting block piece to conduct feeding operation; and the metal plate entering the upper side of the lower die pushes the bending forming piece forwards, and feeding and discharging operation is completed synchronously.

Description

Technical Field

[0001] The invention relates to the technical field of metal plate processing, and in particular to a metal plate bending processing device. Background Art

[0002] In the metal processing industry, sheet metal bending, as a basic and key process, is widely used in many fields such as automobile manufacturing, construction, home appliances, aerospace, etc. Especially for the processing of sheets of specific shapes such as U-shaped sheets, its accuracy and efficiency directly affect the quality and cost of the final product. Although the sheet metal bending equipment currently on the market has made certain progress in bending accuracy and stability, it generally faces the problem of insufficient automation. Specifically, most of these devices rely on manual loading and unloading operations, which not only increases labor intensity, but also easily leads to operational errors and safety hazards. In addition, manual loading and unloading also limits the continuous operation capacity of the equipment, making it difficult to further improve production efficiency. Summary of the invention

[0003] In order to overcome the shortcomings of the above-mentioned background technology, the present invention provides a metal plate bending processing device which can automatically load and unload materials and perform continuous processing.

[0004] A metal plate bending processing device comprises a processing table, wherein a lower die, a support frame, an upper support plate and a material rack are arranged on the processing table, wherein the upper end surface of the upper support plate is flush with the upper end surface of the lower die, a notch matching the size of the lower die is opened on the upper support plate, a punch head matching the lower die is arranged on the support frame, a short shaft is arranged on one side of the support frame, a gear I is arranged on the short shaft, a straight rack I matching the gear I is arranged on one side of the punch head, and a gear driven by a helical gear set is arranged on the processing table through the shaft support A horizontal axis and a vertical axis are connected, and the horizontal axis and the short axis are connected through a pulley group. A one-way bearing is arranged on the vertical axis, and a gear II is arranged on the outer ring of the one-way bearing. A spur rack II cooperating with the gear II is arranged on the upper support plate, and a guide rod sleeve is arranged on one side of the spur rack II. A guide rod cooperating with the guide rod sleeve is arranged on the upper support plate, and a long spring is sleeved on the guide rod. A shift block is arranged at one end of the spur rack II, and the spur rack II moves along the length direction of the guide rod, and the metal plate on the material rack is transmitted to the upper side of the lower mold through the shift block.

[0005] As a further preferred scheme, the lower mold includes a mold frame, a T-shaped plate and two L-shaped plates, the mold frame is provided with a trapezoidal groove running through it along its length direction, the upper end of the trapezoidal groove is open, the upper side length of the trapezoidal groove is greater than the lower side length, and a vertical guide groove connected to it is provided at the bottom center, and a plurality of straight holes are provided on both sides along its length direction, the two L-shaped plates are symmetrically arranged in the trapezoidal groove, and the two sides of the L-shaped plate respectively correspond to the bottom wall and the side wall of the trapezoidal groove, and the side of the L-shaped plate is provided with a plurality of long studs, and the long studs respectively and one by one correspond to the horizontally running through the straight holes, and the parts of the long studs located on the outside of the mold frame are respectively sleeved with a spring III, the T-shaped plate is arranged in the trapezoidal groove, and its vertical part is inserted into the guide groove, the bottom of the guide groove is provided with a vertical sliding column, and the bottom of the vertical part of the T-shaped plate is provided with a hole adapted to the vertical sliding column, and the vertical sliding column is sleeved with a spring IV.

[0006] As a further preferred embodiment, the angle between the hypotenuse and the lower base of the trapezoidal groove is 90° to 105°.

[0008] As a further preferred embodiment, the material rack includes a material plate, a spring II and a pressure plate. The material plate is parallel to the upper support plate. A plurality of short sliding columns perpendicular to the material plate are provided at the bottom of the material plate. Vertical holes cooperating with the short sliding columns are provided on the processing table. A spring II is provided between the material plate and the processing table. The spring II is sleeved on the short sliding column. The pressure plate is provided on the processing table for limiting the height of the metal plate placed on the material plate. The height between the pressure plate and the upper support plate is slightly greater than the thickness of a single metal plate.

[0009] As a further preferred solution, the pressure plate also includes a pressure plate support, and the pressure plate is adjustably arranged on the pressure plate support through a screw rod. A straight rail consistent with the direction of gear II is provided on the processing table, and a slider is provided on the straight rail, and the slider is fixedly connected to the pressure plate support.

[0010] As a further preferred solution, the upper support plate includes a horizontal portion and an inclined portion, and the inclined portion is located at the front end of the lower mold.

[0011] As a further preferred solution, the spur rack I is connected to the punch head via a support rod, one side of the spur rack I is provided with adjustment holes evenly distributed along the length direction, the support rod is provided with a mounting screw, and the mounting screw is threadedly connected to the adjustment hole.

[0012] As a further preferred embodiment, the shift block comprises a shell, a bevel block and a spring I. The shell is arranged at one end of the spur rack II, one end of the shell is open, the bevel block and the spring I are arranged in the shell, one end of the bevel block extends along the shell opening, one end of the spring I is connected to the inner bottom wall of the shell, and the other end is connected to the bevel block.

[0013] As a further preferred scheme, the shift block is also provided with an adjusting part, and the adjusting part includes a slide groove arranged on the shell, the slide groove is connected with the inside of the shell, the direction of the slide groove is the same as the setting direction of the spring, a stop plate slidably matched with the slide groove is provided in the slide groove, one end of the stop plate is connected to the inclined block, a threaded hole is provided on one side of the shell, the threaded hole passes through the slide groove, an adjusting rod is provided in the threaded hole, and the adjusting rod abuts against the stop plate to limit the position of the stop plate.

[0014] Compared with the prior art, the present invention has the following advantages: 1. In the process of the punch head and the lower die cooperating to bend the metal plate, the device finally drives the spur rack II to run along the guide rod through the spur rack I and the gear I, and the unidirectional power transmission between the punch head and the spur rack II can be realized through the cooperation of the one-way bearing and the long spring, so that when the punch head is raised, the spur rack II drives the shift block to perform the loading operation, and at the same time, the metal plate entering the upper side of the lower die pushes the bent part forward, and the loading and unloading operations are completed synchronously, and then the long spring drives the spur rack II and the shift block to reset, and so on and so forth, thereby realizing the automatic loading, unloading, bending and other processing steps.

[0015] 2. The lower die of the device is composed of a frame, a T-shaped plate and two L-shaped plates. Through the cooperation of the T-shaped plate, the L-shaped plate and the trapezoidal groove, the folding edge can be kept smooth during the bending process. In addition, due to the provision of a long stud, spring III, a vertical sliding column and spring IV, the material can be easily withdrawn after bending without getting stuck, which is convenient for subsequent material unloading operations.

[0016] 3. The material rack of this device limits the amount of material loaded each time by cooperating with the material plate and the pressure plate. By adjusting the height and position of the pressure plate, it can adapt to the processing needs of metal plates of different sizes and specifications.

[0017] 4. The front end of the upper support plate of this device is inclined. During the material return process, the U-shaped metal plate can slide along the inclined part to the storage bin to avoid direct falling during material unloading, collision and damage.

[0018] 5. The shifting block of the device is provided with an adjusting part inside, and the position of the abutment plate is limited by the adjusting rod, and the extension amount of the inclined block is controlled, so that it can adapt to metal plates of different sizes.

[0019] In summary, this device can automatically complete the bending, loading and unloading of metal sheets without human intervention, which not only significantly improves processing efficiency and product quality, but also effectively reduces labor costs and safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the local structure of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the upper support plate, spur rack II, guide rod sleeve, guide rod and long spring of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the lower mold of the present invention.

[0024] Figure 5 It is an exploded view of the lower mold of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the processing table, material plate, spring II, pressure plate, short sliding column and pressure plate support of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the spur rack I, the adjustment hole, the support rod and the mounting screw rod of the present invention.

[0027] Figure 8 It is a cross-sectional view of the housing of the shifting block of the present invention.

[0028] Among them, the above drawings include the following figure marks: 1, processing table, 11, support frame, 12, shaft bracket, 2, punch head, 3, lower mold, 31, mold frame, 311, guide groove, 312, straight hole, 32, T-type plate, 33, L-type plate, 34, long stud, 35, spring III, 36, vertical sliding column, 37, spring IV, 4, upper support plate, 51, straight rack I, 511, adjustment hole, 52, support rod, 53, mounting screw, 61, short shaft, 62, Gear I, 63, horizontal axis, 64, vertical axis, 65, bevel gear set, 66, pulley set, 67, one-way bearing, 68, gear II, 7, spur rack II, 71, guide rod sleeve, 72, guide rod, 73, long spring, 74, shift block, 741, housing, 742, slide groove, 743, bevel block, 744, spring I, 745, stop plate, 746, adjusting rod, 8, material plate, 81, spring II, 82, pressure plate, 83, short slide column, 84, pressure plate support. DETAILED DESCRIPTION

[0029] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0030] Figure 1It is a schematic diagram of the overall three-dimensional structure of a metal plate bending processing device, which includes a processing table 1, and a lower mold 3, a support frame 11, an upper support plate 4 and a material rack are arranged on the upper end of the processing table 1, wherein the support frame 11 is located on both sides of the lower mold 3, and the material rack is located at the rear end of the lower mold 3. The upper end surface of the upper support plate 4 is flush with the upper end surface of the lower mold 3, and a notch that matches the size of the lower mold 3 is opened on the upper support plate 4. In a preferred embodiment, the upper support plate 4 includes a horizontal part and an inclined part, and the inclined part is located at the front end of the lower mold 3 to facilitate the unloading of the bent U-shaped metal plate. A punch head 2 cooperating with the lower mold 3 is provided at the upper end of the support frame 11. Specifically, the punch head 2 is composed of a cylinder and a pressure block connected to the lower end of the cylinder piston rod. The punch head 2 cooperates with the lower mold 3 to complete the bending processing of the metal plate.

[0031] In order to realize automatic loading and unloading during the bending process, the device is provided with a component for loading and unloading, which is provided with a short shaft 61 on one side of the support frame 11, and a gear I 62 is fixedly arranged on the short shaft 61. A spur rack I 51 cooperating with the gear I 62 is provided on one side of the punch head 2. When the punch head 2 moves upward or downward, the gear I 62 is driven to rotate by the spur rack I 51, and the short shaft 61 is further driven to rotate. A horizontal shaft 63 and a vertical shaft 64 are provided on the processing table 1 through the shaft bracket 12, wherein the horizontal shaft 63 and the vertical shaft 64 are connected by a helical gear set 65. In addition, the horizontal shaft 63 and the short shaft 61 are connected by a pulley set 66. In this way, the up and down movement of the punch head 2 transmits power to the vertical shaft 64, and further drives the vertical shaft 64 to rotate. A one-way bearing 67 is provided on the vertical shaft 64, and a gear II 68 is fixedly arranged on the outer ring of the one-way bearing 67. A spur rack II 7 cooperating with the gear II 68 is slidably provided on the upper support plate 4. For specific reference Figure 2-3 A guide rod sleeve 71 is provided on one side of the spur rack II 7, and a guide rod 72 is provided on the upper support plate 4. The setting direction of the guide rod 72 is consistent with the feeding direction. The guide rod sleeve 71 is slidably sleeved on the guide rod 72, so that the spur rack II 7 can slide along the length direction of the guide rod 72. A long spring 73 is sleeved on the end of the guide rod 72 away from the guide rod sleeve 71. When feeding, the spur rack II 7 drives the guide rod sleeve 71 to run, thereby compressing the long spring 73. At this time, the long spring 73 accumulates force. When the feeding is completed, the long spring 73 resets the spur rack II 7 by elastic force. A shifting block 74 is fixedly provided at one end of the spur rack II 7 close to the lower mold 3. A material rack for placing the metal plates to be processed is provided on the running path of the shifting block 74. When the shifting block 74 moves toward the lower mold 3 along with the spur rack II 7, one of the metal plates on the material rack can be sent to the top of the lower mold 3 for bending processing.

[0032] Furthermore, the components for loading and unloading materials can be arranged symmetrically to increase the stability of feeding. The specific structure is as follows: Figure 2 as shown in .

[0033] Specific reference Figure 6The material rack includes a material plate 8, a spring II 81 and a pressure plate 82. The material plate 8 is parallel to the upper support plate 4. A plurality of short slide columns 83 perpendicular to the material plate 8 are provided at the bottom of the material plate 8. Corresponding vertical holes cooperating with the short slide columns 83 are provided on the processing table 1. A spring II 81 is respectively sleeved on each short slide column 83. The pressure plate 82 is provided on the processing table 1 to limit the height of the metal plate placed on the material plate 8. In addition, the pressure plate 82 also includes a pressure plate support 84. The pressure plate 82 is adjustably arranged on the pressure plate support 84 through a screw. A straight rail consistent with the direction of the gear II 68 is provided on the processing table 1. A slider is provided on the straight rail. The slider is fixedly connected to the pressure plate support 84. The material plate 8 cooperates with the pressure plate 82 to limit the number of materials loaded each time to one. By adjusting the height and position of the pressure plate 82, it can adapt to the processing needs of metal plates of different sizes and specifications.

[0034] It is particularly important to note that the height of the pressing plate 82 should be adjusted to make the height between the pressing plate 82 and the upper support plate 4 slightly greater than the thickness of a single metal plate, so that one metal plate can be pushed forward each time.

[0035] like Figure 6 and Figure 8 As shown, in a preferred embodiment, the shifting block 74 includes a housing 741, an inclined block 743 and a spring I 744. The housing 741 is disposed at one end of the spur rack II 7, and one end of the housing 741 is open. The inclined block 743 and the spring I 744 are disposed in the housing 741. One end of the inclined block 743 having an inclined surface extends along the open end of the housing 741. One end of the spring I 744 is connected to the inner bottom wall of the housing 741, and the other end is connected to the inclined block 743. It should be noted that the inclined block 743 has an inclined surface on one side facing away from the metal plate to be processed. Furthermore, the block member 74 is also provided with an adjustment part for adjusting the extension length of the inclined block 743. Specifically, the adjustment part includes a slide groove 742 provided on the housing 741, the slide groove 742 is connected to the inside of the housing 741, the direction of the slide groove 742 is the same as the setting direction of the spring I 744, a butt plate 745 is provided in the slide groove 742 to slide with the slide groove 742, one end of the butt plate 745 is fixedly connected to the inclined block 743, a threaded hole is provided on one side of the housing 741, the threaded hole passes through the slide groove 742, an adjustment rod 746 is provided at the threaded hole, the adjustment rod 746 abuts against the butt plate 745, and is used to limit the position of the butt plate 745. By providing the adjustment part, metal plates of more sizes can be adapted, thereby improving the applicability of the device.

[0036] Specific reference Figure 4 and Figure 5, wherein the lower mold 3 includes a mold frame 31, a T-shaped plate 32 and two L-shaped plates 33. The mold frame 31 is provided with a trapezoidal groove running through it along its length direction, and the upper end of the trapezoidal groove is open. It should be particularly noted that the upper side length of the trapezoidal groove is greater than the lower side length, and a vertical guide groove 311 connected to the trapezoidal groove is provided at the bottom of the trapezoidal groove along its center. Specifically, the two L-shaped plates 33 are symmetrically arranged in the trapezoidal groove, and the two sides of the L-shaped plate 33 correspond to the bottom wall and the side wall of the trapezoidal groove respectively, that is, the bottom side of the L-shaped plate 33 corresponds to the bottom side of the trapezoidal groove, and the vertical side of the L-shaped plate 33 corresponds to the side of the trapezoidal groove. In a preferred embodiment, the angle between the hypotenuse of the trapezoidal groove and the lower bottom side is 90°~105°, preferably 105°, a plurality of long studs 34 are provided along the length direction of the side of the L-shaped plate 33, and the corresponding two sides of the trapezoidal groove of the mold frame 31 are provided with horizontal through-holes 312 corresponding to each other, and the parts of the long studs 34 located on the outside of the mold frame 31 are respectively sleeved with a spring III 35, the T-shaped plate 32 is arranged in the trapezoidal groove, and its vertical part is inserted into the guide groove 311, and the horizontal part is placed on the upper side of the horizontal part of the L-shaped plate 33, and the bottom of the guide groove 311 is provided with a vertical sliding column 36 for its guiding function, and the vertical sliding column 36 is sleeved with a spring IV 37, and the bottom of the vertical part of the T-shaped plate 32 is provided with a hole adapted to the vertical sliding column 36. When bending, the metal plate is placed directly above the lower die 3, and the punch head 2 punches downward. The middle part of the metal plate is deformed toward the bottom of the trapezoidal groove, and the two sides of the metal plate are bent by force. When the metal plate presses the L-shaped plate 33, the two L-shaped plates 33 are forced to rotate at a small angle with their corners as the activity center. The horizontal part of the L-shaped plate 33 abuts against the bottom edge of the trapezoidal groove, and the vertical part of the L-shaped plate 33 bends the metal plate to 90 degrees. At the same time, the T-shaped plate 32 compresses the spring IV37, and the long stud 34 compresses the spring III35. After the bending action is completed, the punch head 2 rises, and the T-shaped plate 32 is raised through the action of spring IV37 and spring III35, and the two relatively close L-shaped plates 33 open.

[0037] After the bending is completed, the punch head 2 rises and drives the spur rack I51 to rise synchronously. At this time, the spur rack I51 engages with the gear I62 and drives it to rotate, further driving the short shaft 61, and finally drives the vertical shaft 64 to rotate through a series of power transmissions of the pulley group 66, the horizontal shaft 63 and the bevel gear group 65. When the vertical shaft 64 rotates, the one-way bearing 67 is in a locked state, which will drive the gear II68 to rotate. The gear II68 drives the spur rack II7 to move along the guide rod sleeve 71 toward the lower mold 3 and compress the long spring 73. After the shifting block 74 contacts the uppermost metal plate on the material plate 8, it transmits it forward. In the process, the processed U-shaped metal plate is pushed forward, causing it to fall along the inclined part of the upper support plate 4, and the metal plate just replaces its position. When the punch head 2 rises to a certain height, the spur rack I51 disengages from the gear I62. At this time, the entire power transmission system is interrupted, and the spur rack II7 moves in the opposite direction under the elastic force of the long spring 73. When the shifting block 74 returns, the inclined surface of the inclined block 743 contacts the metal plate on the material plate 8, squeezing the inclined block 743 to retract. After passing over the metal plate, it extends again under the action of the spring I744.

[0038] During the downward movement of the punch head 2, since the rotation direction of the vertical shaft 64 is opposite to that of the upward movement, the one-way bearing 67 is in a loose state, that is, the inner ring will not drive the outer ring to rotate, that is, the power will not be transmitted to the spur rack II 7. It should be noted that the one-way bearing 67 can also be replaced by a one-way transmission mechanism such as a ratchet, and the rotating structures with the same functions all fall within the protection scope of the present invention.

[0039] In addition, the present invention has further improvements. On the basis of the above scheme, a support rod 52 is provided between the spur rack I 51 and the punch head 2, and one side of the spur rack I 51 is provided with adjustment holes 511 evenly distributed along its length direction, and a mounting screw 53 adapted thereto is provided on the support rod 52, and the mounting screw 53 is threadedly connected with the adjustment hole 511. In this way, the time of power transmission and the movement stroke can be further adjusted, thereby making the present invention more adaptable.

[0040] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A metal plate bending device, characterized in that: The invention comprises a processing table (1), wherein the processing table (1) is provided with a lower mold (3), a support frame (11), an upper support plate (4) and a material frame, wherein the upper end surface of the upper support plate (4) is flush with the upper end surface of the lower mold (3), and a notch matching the size of the lower mold (3) is opened on the upper support plate (4); a punch head (2) matching the lower mold (3) is provided on the support frame (11); a short shaft (61) is provided on one side of the support frame (11), and a gear I (62) is provided on the short shaft (61); a straight rack I (51) matching the gear I (62) is provided on one side of the punch head (2); and a horizontal shaft (63) and a vertical shaft (64) connected by transmission through a bevel gear set (65) are provided on the processing table (1) through a shaft support (12). ), the horizontal shaft (63) is connected to the short shaft (61) by a pulley group (66), the vertical shaft (64) is provided with a one-way bearing (67), the outer ring of the one-way bearing (67) is provided with a gear II (68), the upper support plate (4) is provided with a spur rack II (7) matched with the gear II (68), one side of the spur rack II (7) is provided with a guide rod sleeve (71), the upper support plate (4) is provided with a guide rod (72) matched with the guide rod sleeve (71), the guide rod (72) is sleeved with a long spring (73), one end of the spur rack II (7) is provided with a shifting block (74), the spur rack II (7) moves along the length direction of the guide rod (72), and the metal plate on the material rack is transferred to the upper side of the lower mold (3) through the shifting block (74).

2. The metal plate bending device according to claim 1, characterized in that: The lower mold (3) comprises a mold frame (31), a T-shaped plate (32) and two L-shaped plates (33). The mold frame (31) is provided with a trapezoidal groove penetrating along its length direction. The upper end of the trapezoidal groove is open, the upper side length of the trapezoidal groove is greater than the lower side length, the bottom center thereof is provided with a vertical guide groove (311) communicating with the trapezoidal groove, and a plurality of straight holes (312) are provided on both sides along its length direction. The two L-shaped plates (33) are symmetrically arranged in the trapezoidal groove, and the two sides of the L-shaped plates (33) correspond to the bottom wall and the side wall of the trapezoidal groove respectively. The side of the L-shaped plate (33) is provided with a plurality of straight holes (312) on the bottom center thereof. A plurality of long studs (34) are provided at the part, and the long studs (34) respectively and one by one horizontally penetrate the straight hole (312), and the parts of the long studs (34) located outside the mold frame (31) are respectively sleeved with a spring III (35), and the T-shaped plate (32) is arranged in the trapezoidal groove, and its vertical part is inserted into the guide groove (311), and a vertical slide column (36) is provided at the bottom of the guide groove (311), and a hole adapted to the vertical slide column (36) is provided at the bottom of the vertical part of the T-shaped plate (32), and a spring IV (37) is sleeved on the vertical slide column (36).

3. The metal plate bending device according to claim 2, characterized in that: The included angle between the hypotenuse and the lower base of the trapezoidal groove is 90° to 105°.

4. The metal plate bending device according to claim 1, characterized in that: The material rack comprises a material plate (8), a spring II (81) and a pressure plate (82); the material plate (8) is parallel to the upper support plate (4); a plurality of short sliding columns (83) perpendicular to the material plate (8) are provided at the bottom of the material plate (8); a vertical hole matching the short sliding columns (83) is provided on the processing table (1); a spring II (81) is provided between the material plate (8) and the processing table (1); the spring II (81) is sleeved on the short sliding column (83); the pressure plate (82) is provided on the processing table (1) and is used to limit the height of the metal plate placed on the material plate (8); the height between the pressure plate (82) and the upper support plate (4) is slightly greater than the thickness of a single metal plate.

5. The metal plate bending device according to claim 4, characterized in that: The pressing plate (82) further comprises a pressing plate support (84), wherein the pressing plate (82) is adjustably arranged on the pressing plate support (84) via a screw rod, and the processing table (1) is provided with a straight rail which is in the same direction as the gear II (68), and a sliding block is provided on the straight rail, and the sliding block is fixedly connected to the pressing plate support (84).

6. The metal plate bending device according to claim 1, characterized in that: The upper support plate (4) comprises a horizontal portion and an inclined portion, and the inclined portion is located at the front end of the lower mold (3).

7. The metal plate bending device according to claim 1, characterized in that: The spur rack I (51) is connected to the punch head (2) via a support rod (52); one side of the spur rack I (51) is provided with adjustment holes (511) evenly distributed along the length direction; the support rod (52) is provided with a mounting screw (53); the mounting screw (53) is threadedly connected to the adjustment hole (511).

8. The metal plate bending device according to claim 1, characterized in that: The shifting block (74) comprises a housing (741), an inclined block (743) and a spring I (744); the housing (741) is arranged at one end of the spur rack II (7); one end of the housing (741) is open; the inclined block (743) and the spring I (744) are arranged in the housing (741); one end of the inclined block (743) extends out along the opening of the housing (741); one end of the spring I (744) is connected to the inner bottom wall of the housing (741); and the other end is connected to the inclined block (743).

9. The metal plate bending device according to claim 8, characterized in that: The shifting block (74) is also provided with an adjusting portion, which includes a slide groove (742) provided on the shell (741), the slide groove (742) is connected to the inside of the shell (741), the direction of the slide groove (742) is the same as the setting direction of the spring, a stop plate (745) is provided in the slide groove (742) and is slidably matched with the stop plate (745), one end of the stop plate (745) is connected to the inclined block (743), a threaded hole is provided on one side of the shell (741), the threaded hole passes through the slide groove (742), an adjusting rod (746) is provided in the threaded hole, the adjusting rod (746) is in contact with the stop plate (745), and is used to limit the position of the stop plate (745).

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