A plate bending machine

Abstract

This utility model belongs to the field of metal bending technology, specifically a sheet metal bending machine, including a machine base; a support is fixedly connected to the top of the machine base; a hydraulic cylinder is fixedly connected to the top of the support; an upper mold mounting plate is fixedly connected to the bottom end of the hydraulic cylinder; pressure plates are fixedly connected to both sides of the upper mold mounting plate; two sets of rotating rods are rotatably connected to the middle of the machine base; a gear ring is installed in the middle of the rotating rod; multiple limiting rings are installed on the side wall of the machine base; a rack is installed in the middle of the multiple limiting rings; the rack meshes with the gear ring; a support rod is installed in the middle of each set of rotating rods; through the above structure, the support rods support the bottom of the sheet metal on both sides of the bending point, so as to reduce the bending of the sheet metal at the non-bending point due to its own weight, thereby improving the product quality after the sheet metal is bent.

Description

Technical Field

[0001] This utility model belongs to the field of metal bending technology, specifically a sheet metal bending machine. Background Technology

[0002] A bending machine is a machine used to bend workpieces into a specified angle shape. It is commonly used in the industrial field to process metal parts.

[0003] Bending machines are suitable for flat or rod-shaped workpieces. The upper die is driven by a hydraulic mechanism to press down, causing the workpiece on the lower die to deform under force. By adjusting the shape and angle of the upper and lower dies, the workpiece with the corresponding bending angle can be obtained. However, when bending the middle of some long plates, the parts on both sides of the bending position of the plate tend to curl upwards. At the same time, the curled part of the long plate is also longer and heavier, and it is easy for the plate to bend and deform at the incorrect bending position under its own weight, which affects the quality of the product after bending.

[0004] Therefore, this utility model provides a sheet metal bending machine. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A sheet metal bending machine of this utility model includes a machine base; a support is fixedly connected to the top of the machine base; a hydraulic cylinder is fixedly connected to the top of the support; an upper mold mounting plate is fixedly connected to the bottom end of the hydraulic cylinder; pressure plates are fixedly connected to both sides of the upper mold mounting plate; two sets of rotating rods are rotatably connected to the middle of the machine base; a gear ring is installed in the middle of the rotating rod; multiple limiting rings are installed on the side wall of the machine base; a rack is installed in the middle of the multiple limiting rings; the rack meshes with the gear ring; a support rod is installed in the middle of each set of rotating rods; through the above structure, the support rods support the bottom of the sheet metal on both sides of the bending point, thereby reducing the occurrence of bending of the non-bending parts of the sheet metal due to its own weight, and improving the product quality after bending.

[0007] Preferably, a fixed seat is fixedly connected to the side wall of the machine base; a rotating plate is rotatably connected to the middle of the fixed seat via a torsion spring; a limiting tooth is fixedly connected to the side wall of the rotating plate; a limiting block is fixedly connected to the side wall of the machine base; with the above structure, after the sheet metal is bent and the upper mold mounting plate is raised, both ends of the sheet metal can still be supported by the support rod, so that during the process of bending and removing the sheet metal, the two ends of the sheet metal are less likely to bend due to their own weight.

[0008] Preferably, a fixed shaft is fixedly connected to the side wall of the machine tool; the limiting ring is sleeved in the middle of the fixed shaft; a limiting plate is installed at the end of the fixed shaft; and a first bolt is threaded to the end of the fixed shaft. With the above structure, the rack can be replaced after the rack teeth wear, reducing the occurrence of a decrease in transmission effect due to rack tooth wear.

[0009] Preferably, the end of the fixed shaft is provided with a slot; the side wall of the limiting plate is fixed with a retaining tooth; through the above structure, the occurrence of the first bolt loosening and falling off as the rack moves can be reduced, thereby reducing the occurrence of the rack falling off and causing the support rod to lose its support force.

[0010] Preferably, a sliding groove is fixedly connected to the side wall of the machine platform; a top rod is slidably connected to the middle of the sliding groove; a spring is installed inside the sliding groove; a roller is rotatably connected to the end of the top rod; and a fixing rod is fixedly connected to the middle of the rotating rod. Through the above structure, the rotation speed of the rotating rod when it falls is buffered, thereby reducing the impact caused by excessive impact force when the support rod falls on the machine platform.

[0011] Preferably, each set of rotating rods is rotatably connected to a rotating frame at its center; the support rod is rotatably connected to the center of the rotating frame; multiple support rods are installed at the center of the rotating frame; through the above structure, multiple support rods can fit against the bottom of the warped board and provide support, increasing the support area of ​​the board and further reducing the occurrence of abnormal bending of the board.

[0012] Preferably, the middle part of the rotating rod is threaded with multiple second bolts; the gear ring is installed in the middle part of the rotating rod by the second bolts; with the above structure, the gear ring can be easily replaced after the gear ring teeth wear, reducing the impact of excessive wear on the gear ring teeth.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The sheet metal bending machine of this utility model, through the arrangement of machine base, bracket, hydraulic cylinder, upper mold mounting plate, pressure plate, rotating rod, gear ring, gear rack, limit ring and support rod, uses the support rod to support the bottom of the sheet metal on both sides of the bending point, so as to reduce the occurrence of bending of the non-bending part of the sheet metal due to its own weight, thereby improving the product quality after the sheet metal is bent.

[0015] 2. The sheet metal bending machine of this utility model, through the setting of fixed base, rotating plate, limiting teeth and limiting block, can ensure that the two ends of the sheet metal are still supported by the support rod after the sheet metal is bent and the upper mold mounting plate is raised, so that the two ends of the sheet metal are less likely to bend due to their own weight during the process of bending and taking out the sheet metal. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the rack structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the gear ring structure in this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting ring in this utility model;

[0021] Figure 5 This is a schematic diagram of the top rod structure in this utility model;

[0022] In the diagram: 1. Machine base; 12. Support; 13. Hydraulic cylinder; 14. Upper mold mounting plate; 15. Pressure plate; 16. Rotating rod; 17. Gear ring; 18. Gear rack; 19. Limiting ring; 110. Support rod; 2. Fixed seat; 21. Rotating plate; 22. Limiting tooth; 23. Limiting block; 3. Fixed shaft; 31. Limiting disc; 32. First bolt; 4. Slot; 41. Slotting tooth; 5. Slide groove; 51. Top rod; 52. Spring; 53. Roller; 54. Fixed rod; 6. Rotating frame; 7. Second bolt. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 3As shown, a sheet metal bending machine according to an embodiment of this utility model includes a machine base 1; a support 12 is fixedly connected to the top of the machine base 1; a hydraulic cylinder 13 is fixedly connected to the top of the support 12; an upper mold mounting plate 14 is fixedly connected to the bottom end of the hydraulic cylinder 13; pressure plates 15 are fixedly connected to both sides of the upper mold mounting plate 14; two sets of rotating rods 16 are rotatably connected to the middle of the machine base 1; a gear ring 17 is installed in the middle of the rotating rod 16; multiple limiting rings 19 are installed on the side wall of the machine base 1; a rack 18 is installed in the middle of the multiple limiting rings 19; the rack 18 meshes with the gear ring 17; a support rod 110 is installed in the middle of each set of rotating rods 16; during operation, the lower mold for bending the sheet metal is installed on the machine base 1, and the upper mold is installed... Below the upper mold mounting plate 14, when bending the sheet metal on the machine 1, the hydraulic cylinder 13 is activated to drive the upper mold mounting plate 14 to descend, so that the upper and lower molds cooperate to bend the sheet metal. As the upper mold mounting plate 14 descends, the pressure plate 15 presses on the top of the rack 18, causing the rack 18 to descend. The descending rack 18 will cause the two sets of rotating rods 16 to rotate through the gear ring 17. Thus, when bending in the middle of the sheet metal, the two ends of the sheet metal are lifted by the support rods 110. Through the above structure, the support rods 110 support the bottom of the sheet metal on both sides of the bending point, so as to reduce the occurrence of bending of the non-bending part of the sheet metal due to its own weight, and improve the product quality after the sheet metal is bent.

[0025] like Figures 1 to 2 As shown, a fixed base 2 is fixedly connected to the side wall of the machine base 1; a rotating plate 21 is rotatably connected to the middle of the fixed base 2 via a torsion spring; a limiting tooth 22 is fixedly connected to the side wall of the rotating plate 21; a limiting block 23 is fixedly connected to the side wall of the machine base 1; during operation, when the rack 18 descends, the bottom of the rack 18 will press against the limiting tooth 22, at which time the rotating plate 21 will rotate. After completing the bending of the sheet metal, the sheet metal rack 18 descends to the corresponding position. At this time, the rotating plate 21 will rotate under the action of the torsion spring and cause the limiting tooth 22 to fall into the cavity in the middle of the rack 18, so that after the upper mold mounting plate 14 rises, the rack 18... The support rod 110 is difficult to raise and difficult to lower, and it continuously supports the middle of the plate. Then, when it is necessary to remove the bent plate, the two ends of the plate can be supported, and then the rotating plate 21 can be pulled so that the limiting tooth 22 no longer restricts the rack 18. At this time, the support rod 110 can fall normally and no longer obstruct the removal of the plate. Through the above structure, after the plate is bent and the upper mold mounting plate 14 is raised, the two ends of the plate can still be supported by the support rod 110. Thus, during the process of bending and removing the plate, the two ends of the plate are unlikely to bend due to their own weight.

[0026] like Figures 1 to 4As shown, a fixed shaft 3 is fixedly connected to the side wall of the machine base 1; a limiting ring 19 is sleeved in the middle of the fixed shaft 3; a limiting plate 31 is installed at the end of the fixed shaft 3; a first bolt 32 is threadedly connected to the end of the fixed shaft 3; during operation, as the rack 18 engages with the gear ring 17 for a long time, the teeth on the rack 18 may wear, requiring the rack 18 to be replaced. At this time, multiple first bolts 32 can be unscrewed so that the limiting plate 31 no longer obstructs the rack 18, thereby replacing the rack 18. After the new rack 18 is sleeved in the middle of multiple limiting rings 19, the first bolt 32 is used to install the limiting plate 31 at the end of the limiting ring 19 and limit the rack 18. Through the above structure, the rack 18 can be replaced after the teeth of the rack 18 wear, reducing the occurrence of a decrease in transmission effect due to the wear of the rack 18 teeth.

[0027] like Figures 1 to 4 As shown, a groove 4 is provided at the end of the fixed shaft 3; a retaining tooth 41 is fixedly connected to the side wall of the limiting disk 31; during operation, when the limiting disk 31 is placed on the end of the limiting ring 19, the retaining tooth 41 is inserted into the groove 4, so that during the descent of the rack 18, the limiting disk 31 is difficult to rotate with the rotation of the limiting ring 19, and thus the first bolt 32 is difficult to rotate and fall off from the end of the fixed shaft 3. Through the above structure, the occurrence of the first bolt 32 loosening and falling off as the rack 18 moves can be reduced, thereby reducing the occurrence of the rack 18 falling off and causing the support rod 110 to lose its support force.

[0028] like Figures 1 to 5 As shown, a slide groove 5 is fixedly connected to the side wall of the machine base 1; a top rod 51 is slidably connected to the middle of the slide groove 5; a spring 52 is installed inside the slide groove 5; a roller 53 is rotatably connected to the end of the top rod 51; a fixed rod 54 is fixedly connected to the middle of the rotating rod 16; during operation, when the rotating plate 21 is pulled so that the limiting tooth 22 no longer restricts the rise of the rack 18, the rotating rod 16 will rotate due to gravity until the support rod 110 falls onto the machine base 1. During the rotation of the rotating rod 16, the fixed rod 54 will squeeze the roller 53. By adjusting the shape and curvature of the fixed rod 54, the squeezing force of the fixed rod 54 on the roller 53 gradually increases, thereby gradually increasing the compression force of the spring 52. Through the gradually increasing rebound force of the spring 52, the rotation speed of the rotating rod 16 when it falls is buffered, thereby reducing the impact caused by the excessive impact force when the support rod 110 falls onto the machine base 1.

[0029] like Figure 1 As shown, a rotating frame 6 is rotatably connected to the middle of each set of rotating rods 16; a support rod 110 is rotatably connected to the middle of the rotating frame 6; multiple support rods 110 are installed in the middle of the rotating frame 6; through the above structure, multiple support rods 110 can fit against the bottom of the warped board and provide support, increasing the support area of ​​the board and further reducing the occurrence of abnormal bending of the board.

[0030] like Figure 3 As shown, the middle part of the rotating rod 16 is threaded with multiple second bolts 7; the gear ring 17 is installed in the middle part of the rotating rod 16 through the second bolts 7; with the above structure, the gear ring 17 can be easily replaced after the teeth of the gear ring 17 wear, reducing the impact of excessive wear of the teeth of the gear ring 17.

[0031] During operation, the lower die for bending the sheet metal is installed on machine base 1, and the upper die is installed below the upper die mounting plate 14. When bending the sheet metal on machine base 1, the hydraulic cylinder 13 is activated to lower the upper die mounting plate 14, so that the upper and lower dies cooperate to bend the sheet metal. As the upper die mounting plate 14 descends, the pressure plate 15 presses against the top of the rack 18, causing the rack 18 to descend. The descending rack 18 will cause the two sets of rotating rods 16 to rotate through the gear ring 17, so that when bending in the middle of the sheet metal, both ends of the sheet metal are lifted by the support rod 110. When the rack 18 descends, the bottom of the rack 18 will engage the limiting tooth 22. During the pressing process, the rotating plate 21 rotates. After bending the sheet material, the sheet material rack 18 descends to the corresponding position. At this time, the rotating plate 21 rotates under the action of the torsion spring, causing the limiting tooth 22 to engage in the cavity in the middle of the rack 18. This makes it difficult for the rack 18 to rise after the upper mold mounting plate 14 rises, and the support rod 110 to descend, continuously supporting the middle of the sheet material. Subsequently, when it is necessary to remove the bent sheet material, the two ends of the sheet material can be supported, and then the rotating plate 21 can be pulled so that the limiting tooth 22 no longer restricts the rack 18. At this time, the support rod 110 can fall normally and no longer obstruct the removal of the sheet material. Because rack 18 engages with gear ring 17 for extended periods, the teeth on rack 18 may wear, necessitating replacement. To replace rack 18, multiple first bolts 32 can be unscrewed, allowing the limiting disc 31 to no longer obstruct it. After replacing the rack 18, the new rack 18 is fitted onto the middle of multiple limiting rings 19. Then, the first bolts 32 are used to install the limiting disc 31 at the end of the limiting rings 19, limiting the rack 18. When the limiting disc 31 is on the end of the limiting rings 19, the retaining teeth 41 are inserted into the retaining grooves 4. This allows the limiting disc 31 to move freely as rack 18 descends. It is difficult for the first bolt 32 to rotate with the rotation of the limiting ring 19, which makes it difficult for the first bolt 32 to rotate and fall off from the end of the fixed shaft 3. When the rotating plate 21 is pulled so that the limiting tooth 22 no longer restricts the rise of the rack 18, the rotating rod 16 will rotate due to gravity until the support rod 110 falls on the machine base 1. During the rotation of the rotating rod 16, the fixed rod 54 will squeeze the roller 53 and gradually increase the squeezing force of the fixed rod 54 on the roller 53 by adjusting the shape and curvature of the fixed rod 54. This will gradually increase the compression force of the spring 52. The gradually increasing rebound force of the spring 52 will buffer the rotation speed of the rotating rod 16 when it falls.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plate bending machine comprising a machine bed (1); characterized in that: A bracket (12) is fixedly connected to the top of the machine base (1); a hydraulic cylinder (13) is fixedly connected to the top of the bracket (12); an upper mold mounting plate (14) is fixedly connected to the bottom end of the hydraulic cylinder (13); pressure plates (15) are fixedly connected to both sides of the upper mold mounting plate (14); two sets of rotating rods (16) are rotatably connected to the middle of the machine base (1); a gear ring (17) is installed in the middle of the rotating rod (16); multiple limiting rings (19) are installed on the side wall of the machine base (1); a rack (18) is installed in the middle of the multiple limiting rings (19); the rack (18) meshes with the gear ring (17); a support rod (110) is installed in the middle of each set of rotating rods (16).

2. A plate bending machine according to claim 1, characterized in that: The machine base (1) is fixedly connected to a fixed seat (2) on its side wall; a rotating plate (21) is rotatably connected to the middle of the fixed seat (2) via a torsion spring; a limiting tooth (22) is fixedly connected to the side wall of the rotating plate (21); and a limiting block (23) is fixedly connected to the side wall of the machine base (1).

3. A plate bending machine according to claim 1, characterized in that: The side wall of the machine base (1) is fixedly connected to a fixed shaft (3); the limiting ring (19) is sleeved on the middle part of the fixed shaft (3); the end of the fixed shaft (3) is equipped with a limiting plate (31); the end of the fixed shaft (3) is threadedly connected to a first bolt (32).

4. A plate bending machine according to claim 3, characterised in that: The fixed shaft (3) has a slot (4) at its end; the side wall of the limiting disk (31) is fixed with a tooth (41).

5. A plate bending machine according to claim 1, characterized in that: The side wall of the machine base (1) is fixedly connected to a slide groove (5); a top rod (51) is slidably connected to the middle of the slide groove (5); a spring (52) is installed inside the slide groove (5); a roller (53) is rotatably connected to the end of the top rod (51); a fixing rod (54) is fixedly connected to the middle of the rotating rod (16).

6. A plate bending machine according to claim 1, characterized in that: Each set of rotating rods (16) is rotatably connected to a rotating frame (6) at its center; the support rod (110) is rotatably connected to the center of the rotating frame (6); multiple support rods (110) are installed at the center of the rotating frame (6).

7. A plate bending machine according to claim 1, characterized in that: The middle part of the rotating rod (16) is threaded with multiple second bolts (7); the gear ring (17) is installed in the middle part of the rotating rod (16) by the second bolts (7).

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