Plate edge folding positioning structure of bending machine

Abstract

The utility model discloses a plate folding positioning structure of a bending machine, which belongs to the technical field of bending machines and comprises a worktable, supporting legs are mounted at four corners of the bottom of the worktable, a positioning mechanism for fixing plates during folding is mounted on the upper surface of the worktable, and a portal frame is transversely mounted on the upper surface of the worktable. An air cylinder is installed on the upper surface of the portal frame, the output end of the air cylinder penetrates through the interior of the portal frame and extends to the lower portion, and a fixing base is fixedly installed at the output end of the air cylinder. According to the plate edge folding positioning structure of the bending machine, the pressing plate is elastically supported through the arranged spring, the height of the pressing plate can be freely adjusted so as to fix plates with different thicknesses, meanwhile, the folding elbow can be detached through the bolt, the plates with different sizes and lengths can be bent, and the plate edge folding positioning structure is convenient to use and high in practicability. And a reciprocating motor is arranged to drive a threaded rod to rotate, so that the distance between the two positioning blocks is controlled to be matched with the bending head above.

Description

Technical Field

[0001] The utility model belongs to the technical field of bending machines, and in particular relates to a plate edge folding positioning structure for a bending machine. Background Art

[0002] The bending machine uses the equipped mold (general or special mold) to bend the cold metal sheet into workpieces of various geometric cross-sectional shapes. It is a sheet forming machine designed for cold rolled sheet metal processing. It is widely used in sheet bending processing in the automobile, aircraft manufacturing, light industry, shipbuilding, container, elevator, railway vehicle and other industries.

[0003] When processing plates, existing bending machines basically place the plates directly on the processing table for processing. However, the vibration generated by the machine during the processing will cause the placed plates to shift, which will lead to deviations in the bending angles of the plates during processing, reducing the processing accuracy. At the same time, the positioning structures installed on some bending machines cannot be adjusted according to the size of the plates, so they cannot adapt to plates of different sizes and lengths, which greatly limits the use scope of the bending machines. Therefore, a plate folding positioning structure for a bending machine is proposed to solve the above problems. Utility Model Content

[0004] In view of one or more of the above defects or improvement needs in the prior art, the utility model provides a plate edge folding positioning structure for a bending machine, which has the advantage of being adjustable and fixed according to plates of different lengths.

[0005] To achieve the above-mentioned purpose, the utility model provides a plate folding positioning structure for a bending machine, comprising a workbench, supporting feet are installed at the four corners of the bottom of the workbench, a positioning mechanism for fixing the plate when folding the plate is installed on the upper surface of the workbench, a gantry is installed horizontally on the upper surface of the workbench, a cylinder is installed on the upper surface of the gantry and its output end passes through the interior of the gantry and extends to the bottom, a fixing seat is fixedly installed on the output end of the cylinder, a bending head is installed on the lower surface of the fixing seat by bolts, and a plate body is placed on the positioning mechanism;

[0006] The positioning mechanism includes a threaded rod, the workbench is rotatably connected to the threaded rod, a fixed plate is installed on the right side of the workbench, a reciprocating motor is installed on the upper surface of the fixed plate and its output end is fixedly connected to the right end of the threaded rod, a left slider and a right slider are installed on the outer wall of the threaded rod, which are symmetrically arranged on the left and right sides and are threadedly connected to the threaded rod, and mounting seats are installed on the upper surfaces of the left and right sliders, and positioning blocks are installed on the upper surfaces of the two mounting seats, and fixing grooves are opened inside the two positioning blocks, and two lifting rods are movably installed on the inner top walls of the two positioning blocks, and pressure plates are installed on the lower ends of the two lifting rods and are located inside the positioning blocks, and the plate body is placed on the inner bottom walls of the two positioning blocks and fits with the lower surfaces of the two pressure plates at the same time.

[0007] As a further improvement of the utility model, a movable hole for allowing the threaded rod to rotate is opened transversely through the interior of the workbench.

[0008] As a further improvement of the present invention, the internal threads of the left slider and the right slider are opposite.

[0009] As a further improvement of the present invention, a limiting plate is installed on the back of the two positioning blocks.

[0010] As a further improvement of the utility model, the inner top walls of the two positioning blocks are provided with sliding holes for the two lifting rods to slide and are slidably connected thereto.

[0011] As a further improvement of the utility model, limit blocks are installed on the top ends of the two lifting rods on the same side, and the two limit blocks are located on the upper surface of the outer wall of the positioning block.

[0012] As a further improvement of the utility model, the outer walls of the lifting rods are movably sleeved with springs.

[0013] As a further improvement of the present invention, the inner bottom walls of the two positioning blocks are provided with arc-shaped edges on opposite sides, and the lower surfaces of the two pressing plates are provided with arc-shaped edges on the sides close to the front sides.

[0014] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0015] 1. The plate folding positioning structure of the bending machine of the utility model elastically supports the pressure plate through the arranged spring, and the height of the pressure plate can be freely adjusted to fix the plates of different thicknesses. At the same time, the bending head can be disassembled by bolts, and the plates of different sizes and lengths can be bent. Then, the threaded rod is driven to rotate by the arranged reciprocating motor, so as to control the distance between the two positioning blocks to adapt to the bending head above.

[0016] 2. The plate folding positioning structure of the bending machine of the utility model can longitudinally and horizontally limit the plate fixed between the two positioning blocks through the setting of the limit plate, and the arc-shaped portion set on the positioning block and the pressure plate can reduce the traces of friction generated when the plate is bent and facilitate the staff to place the plate between the pressure plate and the inner bottom wall of the positioning block for fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure of the left slider and the right slider of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the positioning mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of some parts of the positioning mechanism of the utility model.

[0021] In all the drawings, the same figure marks represent the same technical features, specifically: 1. workbench; 2. supporting feet; 3. positioning mechanism; 301. threaded rod; 302. fixed plate; 303. reciprocating motor; 304. movable hole; 305. left slider; 306. right slider; 307. mounting seat; 308. positioning block; 309. limit plate; 310. fixing groove; 311. sliding hole; 312. lifting rod; 313. pressure plate; 314. limit block; 315. spring; 316. arc edge; 4. gantry; 5. cylinder; 6. fixed seat; 7. bending head; 8. sheet body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] Depend on Figure 1-4A plate folding positioning structure of a bending machine is provided, comprising a workbench 1, support legs 2 are installed at the four corners of the bottom of the workbench 1, a positioning mechanism 3 for fixing the plate when folding the plate is installed on the upper surface of the workbench 1, a gantry 4 is installed horizontally on the upper surface of the workbench 1, a cylinder 5 is installed on the upper surface of the gantry 4 and its output end passes through the interior of the gantry 4 and extends to the bottom, a fixing seat 6 is fixedly installed on the output end of the cylinder 5, a bending head 7 is installed on the lower surface of the fixing seat 6 by bolts, and a plate body 8 is placed on the positioning mechanism 3;

[0025] The positioning mechanism 3 includes a threaded rod 301, which is rotatably connected to the workbench 1, and a fixed plate 302 is installed on the right side of the workbench 1. A reciprocating motor 303 is installed on the upper surface of the fixed plate 302 and its output end is fixedly connected to the right end of the threaded rod 301. A left slider 305 and a right slider 306 are installed on the outer wall of the threaded rod 301 in a left-right symmetrical arrangement and are both threadedly connected to the threaded rod 301. Mounting seats 307 are installed on the upper surfaces of the left slider 305 and the right slider 306. Positioning blocks 308 are installed on the upper surfaces of the two mounting seats 307. Fixed grooves 310 are provided inside the two positioning blocks 308. Two lifting rods 312 are movably installed on the inner top walls of the two positioning blocks 308. Pressing plates 313 are installed on the lower ends of the two lifting rods 312 and are located inside the positioning blocks 308. The plate body 8 is placed on the inner bottom walls of the two positioning blocks 308 and fits with the lower surfaces of the two pressing plates 313 at the same time.

[0026] The two sliders are controlled by a reciprocating motor 303 so that the distance between the two positioning blocks 308 is roughly appropriate to the length of the sheet body 8. Then, the sheet body 8 is placed in the fixing groove 310 on the two positioning blocks 308. At this time, the pressure plate 313 arranged above fixes the sheet body 8 under the elastic support of the spring 315. At the same time, the limit plate 309 installed on the back limits the sheet body 8 and performs longitudinal horizontal restriction on the position of the sheet body 8 in the fixing groove 310. Then, the reciprocating motor 303 is started to control the two positioning blocks 308 to move in the same direction to fix the sheet body 8 in the middle, so that the left and right sides of the sheet body 8 are fitted with the inner walls on the opposite side of the two positioning blocks 308. Finally, the cylinder 5 is started to move the bending head 7 installed below downward to bend the sheet body 8. At the same time, the elastic support of the spring 315 makes the pressure plate 313 have a certain elasticity, which can reduce the friction marks generated when the upper and lower surfaces of the sheet body 8 move when the sheet body 8 is bent.

[0027] Specifically, refer to Figure 1-3 A movable hole 304 is formed in the workbench 1 and is provided transversely therethrough to allow the threaded rod 301 to rotate.

[0028] In this embodiment, the movable hole 304 is set to enable the threaded rod 301 to rotate inside the workbench 1 and the left slider 305 and the right slider 306 to move, so that the movement of the left slider 305 and the right slider 306 in the movable hole 304 can be controlled by rotating the threaded rod 301.

[0029] Specifically, refer to Figure 1-2 , the internal threads of the left slider 305 and the right slider 306 are opposite.

[0030] In this embodiment, by setting the internal threads of the left slider 305 and the right slider 306 to be opposite, when the threaded rod 301 rotates, the left slider 305 and the right slider 306 threadedly connected thereto can move in the same direction or in opposite directions, thereby realizing the opening and closing of the two upper positioning blocks 308, and fixing the plate body 8 of different sizes and lengths.

[0031] Specifically, refer to Figure 3-4 , a limiting plate 309 is installed on the back of the two positioning blocks 308.

[0032] In this embodiment, the backs of the two positioning blocks 308 are both provided with limiting plates 309 , so that the position of the plate body 8 in the fixing grooves 310 on the two positioning blocks 308 is longitudinally and horizontally limited.

[0033] Specifically, refer to Figure 3-4 The inner top walls of the two positioning blocks 308 are provided with sliding holes 311 for the two lifting rods 312 to slide and are slidably connected thereto.

[0034] In this embodiment, the sliding hole 311 is provided to enable the lifting rod 312 to slide on the top of the positioning block 308, and then the plate body 8 with different thicknesses can be fixed by the up and down movement of the lifting rod 312.

[0035] Specifically, refer to Figure 4 The top ends of the two lifting rods 312 on the same side are both installed with limit blocks 314 , and the two limit blocks 314 are located on the upper surface of the outer wall of the positioning block 308 .

[0036] In this embodiment, the position of the lifting rod 312 on the positioning block 308 is limited by the limit block 314 to prevent the lifting rod 312 from falling off the positioning block 308 when idle. At the same time, a certain distance is maintained between the pressure plate 313 fixedly connected at the bottom ends of the two lifting rods 312 and the inner bottom wall of the positioning block 308, thereby facilitating the plate body 8 to be placed between the pressure plate 313 and the inner bottom wall of the positioning block 308 for fixation.

[0037] Specifically, refer to Figure 4 The outer wall of the lifting rod 312 is movably covered with a spring 315.

[0038] In this embodiment, the outer wall of the lifting rod 312 is movably fitted with a spring 315. When the pressure plate 313 fixes the sheet body 8, the spring 315 is squeezed, thereby forming a reaction force to elastically support the pressure plate 313, so that the sheet body 8 of different thicknesses can be fixed by pushing the pressure plate 313 upward to compress the spring 315.

[0039] Specifically, refer to Figure 3-4 The inner bottom walls of the two positioning blocks 308 are provided with arc-shaped edges 316 on opposite sides thereof, and the lower surfaces of the two pressing plates 313 are provided with arc-shaped edges 316 on the sides close to the front sides thereof.

[0040] In this embodiment, the inner bottom walls of the two positioning blocks 308 are provided with arc edges 316 on opposite sides, which facilitates the sliding bending of the sheet body 8 under the extrusion of the bending head 7 and reduces the sliding resistance during bending. The lower surfaces of the two pressing plates 313 are provided with arc edges 316 close to the front side, so that when the angle between the upper surface and the back of the sheet body 8 contacts the arc edges 316 of the pressing plate 313, the upper surface of the sheet body 8 slides quickly along the arc edges 316 to the lower surface of the pressing plate 313, and then presses the pressing plate 313 upward, so that the sheet body 8 enters between the pressing plate 313 and the inner bottom wall of the positioning block 308 for fixation, so as to facilitate the use of the staff.

[0041] Working principle:

[0042] The plate folding positioning structure of the bending machine of the present invention: the movement of the two sliders is controlled by the reciprocating motor 303, so that the distance between the two positioning blocks 308 is roughly appropriate to the length of the plate body 8, and then the plate body 8 is placed in the fixing groove 310 on the two positioning blocks 308. At this time, the pressing plate 313 arranged on the top fixes the plate body 8 under the elastic support of the spring 315, and the limiting plate 309 installed on the back limits the plate body 8, and the position of the plate body 8 in the fixing groove 310 is longitudinally and horizontally limited, and then the reciprocating motor 303 is started to control the two positioning blocks. 308 moves in the same direction to fix the middle sheet body 8, so that the left and right sides of the sheet body 8 fit with the inner walls on the opposite side of the two positioning blocks 308 respectively, and finally the cylinder 5 is started to move the bending head 7 installed below downward to bend the sheet body 8. At the same time, the elastic support of the spring 315 makes the pressing plate 313 have a certain elasticity, which can reduce the friction marks generated when the upper and lower surfaces of the sheet body 8 move when the sheet body 8 is bent. The bending head 7 can be replaced by the provided bolts to adapt to the folding of sheets of different sizes, thereby achieving the purpose of adjusting and fixing according to sheets of different lengths.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plate edge folding positioning structure for a bending machine, characterized in that: The invention comprises a workbench (1), wherein the four corners of the bottom of the workbench (1) are provided with supporting feet (2), the upper surface of the workbench (1) is provided with a positioning mechanism (3) for fixing the plate when folding the edge, the upper surface of the workbench (1) is provided with a gantry (4) installed horizontally, the upper surface of the gantry (4) is provided with a cylinder (5) and the output end of the cylinder (5) passes through the interior of the gantry (4) and extends downward, the output end of the cylinder (5) is fixedly provided with a fixing seat (6), the lower surface of the fixing seat (6) is provided with a bending head (7) by means of bolts, and a plate body (8) is placed on the positioning mechanism (3); The positioning mechanism (3) comprises a threaded rod (301), the threaded rod (301) is rotatably connected to the workbench (1), a fixing plate (302) is installed on the right side of the workbench (1), a reciprocating motor (303) is installed on the upper surface of the fixing plate (302), and the output end of the reciprocating motor (303) is fixedly connected to the right end of the threaded rod (301), and a left slider (305) and a right slider (306) are installed on the outer wall of the threaded rod (301), which are symmetrically arranged on the left and right and are both threadedly connected to the threaded rod (301), and the upper surfaces of the left slider (305) and the right slider (306) are connected to the threaded rod (301). A mounting seat (307) is installed on the surface, and a positioning block (308) is installed on the upper surface of the two mounting seats (307). A fixing groove (310) is opened inside the two positioning blocks (308). Two lifting rods (312) are movably installed on the inner top walls of the two positioning blocks (308). The lower ends of the two lifting rods (312) are installed with a pressing plate (313) and are located inside the positioning blocks (308). The plate body (8) is placed on the inner bottom walls of the two positioning blocks (308) and is in contact with the lower surfaces of the two pressing plates (313).

2. The plate edge folding positioning structure of the bending machine according to claim 1, characterized in that: A movable hole (304) is provided transversely through the interior of the workbench (1) for the threaded rod (301) to rotate.

3. The plate edge folding positioning structure of the bending machine according to claim 1, characterized in that: The internal threads of the left slider (305) and the right slider (306) are opposite.

4. The plate edge folding positioning structure of the bending machine according to claim 1, characterized in that: Limiting plates (309) are installed on the backs of the two positioning blocks (308).

5. The plate edge folding positioning structure of a bending machine according to claim 1, characterized in that: The inner top walls of the two positioning blocks (308) are each provided with a sliding hole (311) for the two lifting rods (312) to slide and are slidably connected thereto.

6. The plate edge folding positioning structure of a bending machine according to claim 1, characterized in that: Limit blocks (314) are installed at the top ends of the two lifting rods (312) on the same side, and the two limit blocks (314) are located on the upper surface of the outer wall of the positioning block (308).

7. The plate edge folding positioning structure of a bending machine according to claim 1, characterized in that: The outer walls of the lifting rods (312) are movably sleeved with springs (315).

8. The plate edge folding positioning structure of a bending machine according to claim 1, characterized in that: The inner bottom walls of the two positioning blocks (308) are provided with arc-shaped edges (316) on opposite sides thereof, and the lower surfaces of the two pressing plates (313) are provided with arc-shaped edges (316) on the sides close to the front sides thereof.

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