A bending machine processing positioning device

Abstract

The application discloses a bending machine machining positioning device, which contains a workbench, the top of the workbench is provided with a bending assembly, the bottom of the workbench is provided with a positioning assembly, the top of the positioning assembly is provided with a fixing assembly, the bending assembly comprises a hydraulic cylinder, the hydraulic cylinder is installed on the top of the workbench, the telescopic rod of the hydraulic cylinder penetrates through the top of the workbench and is provided with an upper die, the bottom of the workbench is provided with a lower die, the positioning assembly comprises a fixing seat, the fixing seat is symmetrically arranged, two fixing seats are respectively installed on the inner side walls of the workbench, the inside of the fixing seat is provided with a spring plate, one end of the spring plate is hinged with a fixing groove, the bottom of the workbench is provided with a through groove, one end of the pull rod penetrates through the inside of the through groove and is provided with a piston, and the workpiece positioning and springback alleviating functions are conveniently and efficiently realized.

Description

TECHNICAL FIELD

[0001] The application is applied to the background of a bending machine, and is named a bending machine machining positioning device. BACKGROUND

[0002] The bending machine is a machine capable of bending a sheet, and the existing bending machine cannot process the rebound of the sheet or workpiece when bending the sheet workpiece, so it is necessary to provide a bending machine machining positioning device which can achieve the functions of workpiece positioning and rebound reduction. SUMMARY

[0003] The inventor found through research that during the bending process of the bending machine, part of the sheet or workpiece will rebound to the original shape after being bent to the target angle due to the action of tensile stress and compressive stress once the pressure is removed. In order to reduce the rebound of the sheet or workpiece, the staff generally improves the mold of the bending machine, that is, by adjusting the opening size of the lower mold, the sheet or workpiece will exceed the target bending angle when bending, and the sheet or workpiece can rebound to the target bending angle during the rebound process. This method requires to calculate and improve the mold one by one, which greatly increases the workload of the staff.

[0004] The purpose of the present application is to provide a bending machine machining positioning device, which is positioned by two fixed grooves cooperating with the workpiece, and the distance between the two fixed grooves changes when the distance between the two sides of the workpiece changes during bending. The fixed groove drives the pull rod and the piston to slide in the shell, thereby controlling the air pressure in the shell. The rebound range of the workpiece is determined by the size of the air pressure in the shell, and the position of the fixed groove is fixed by the air pressure, so that the workpiece maintains the bending angle. In cooperation with the heating wire, the mold does not need to be adjusted, the purpose of reducing the rebound of the workpiece is achieved, and the problems in the above background technology are solved.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a bending machine machining positioning device, comprising a workbench, a bending assembly is installed on the top of the workbench, a positioning assembly is installed on the bottom of the workbench, and a fixing assembly is installed on the top of the positioning assembly.

[0006] In one embodiment, the bending assembly comprises a hydraulic cylinder installed on the top of the workbench, a telescopic rod of the hydraulic cylinder penetrates through the top of the workbench and is installed with an upper mold, and a lower mold is installed on the bottom of the workbench.

[0007] In one embodiment, the positioning assembly comprises a fixed seat, the fixed seat is symmetrically arranged, two fixed seats are respectively arranged on the inner side wall of the workbench, a spring plate is arranged in the fixed seat, a fixed groove is hinged to one end of the spring plate, a pull rod is fixedly connected to the bottom of the fixed groove, a through groove is formed in the bottom of the workbench, one end of the pull rod penetrates through the inside of the through groove and is provided with a piston, two housings are symmetrically fixedly connected to the bottom of the workbench, the piston is slidably connected to the inside of the housing, an air pipe is communicated with one end of the housing, the air pipe penetrates through one side of the workbench, and a one-way valve is arranged on the outer side wall of the air pipe.

[0008] In one embodiment, the bottom of each of the two housings is provided with an exhaust hole, and a plug is arranged in the exhaust hole.

[0009] In one embodiment, a microswitch is arranged on the bottom of the plug, and a blocking rod is rotatably connected to the bottom of the housing.

[0010] In one embodiment, a sliding rod is fixedly connected to the bottom of the spring plate, and the sliding rod is inserted into the through groove.

[0011] In one embodiment, the fixed assembly comprises an elastic band, the elastic band is arranged on the top of the two fixed grooves, heating wires are uniformly arranged on the top of the elastic band, two fixed rings are symmetrically fixedly connected to the two sides of the elastic band, two fixed rods are symmetrically fixedly connected to the top of the two fixed grooves, and the two fixed rings are respectively sleeved on the outer side walls of the two fixed rods.

[0012] In one embodiment, a nut is threadedly connected to the outer side wall of the fixed rod, and the nut is attached to the top of the fixed ring.

[0013] Compared with the prior art, the present application has the following advantages: by arranging the fixed grooves, the two fixed grooves cooperate to position the workpiece, and when the workpiece is bent, the distance between the two fixed grooves changes, which drives the pull rod and the piston to slide in the housing, thereby controlling the air pressure in the housing, the size of the air pressure in the housing is used to determine the rebound range of the workpiece, and the air pressure is used to fix the position of the fixed groove, so that the workpiece maintains the bending angle, and cooperates with the heating wires to achieve the purpose of reducing the rebound of the workpiece without adjusting the mold. BRIEF DESCRIPTION OF DRAWINGS

[0014] The technical scheme and other advantages of the present application will become apparent from the following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings.

[0015] In the drawings:

[0016] Figure 1 is the schematic diagram of the overall structure of the present application;

[0017] Figure 2 is the schematic diagram of the sectional structure of the present application;

[0018] Figure 3 is the schematic diagram of the fixed groove and elastic band connecting structure of the present application;

[0019] Figure 4 is the schematic diagram of the bottom structure of the present application;

[0020] Figure 5 is the schematic diagram of the internal structure of the shell of the present application;

[0021] Figure 6 is the schematic diagram of the workpiece clamping state of the present application;

[0022] In the figure: 1, workbench; 2, bending assembly; 21, hydraulic cylinder; 22, lower die; 23, upper die; 3, positioning assembly; 31, fixed seat; 32, spring plate; 33, fixed groove; 34, air pipe; 35, one-way valve; 36, shell; 37, through groove; 38, pull rod; 39, piston; 391, sliding rod; 392, plug cover; 393, exhaust hole; 394, stop rod; 395, micro switch; 4, fixing assembly; 41, elastic band; 42, fixed rod; 43, fixed ring; 44, nut; 45, heating wire. DETAILED DESCRIPTION

[0023] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of specific examples are described in the following. Of course, they are merely examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0024] Please refer to Figures 1-6 , the present application provides a technical solution: a bending machine processing positioning device, comprising a workbench 1, the top of the workbench 1 is provided with a bending assembly 2, the bottom of the workbench 1 is provided with a positioning assembly 3, and the top of the positioning assembly 3 is provided with a fixing assembly 4;

[0025] The bending assembly 2 comprises a hydraulic cylinder 21 installed on the top of the workbench 1, the telescopic rod of the hydraulic cylinder 21 penetrates through the top of the workbench 1 and is installed with an upper die 23, the hydraulic cylinder 21 is used for controlling the up-down movement of the upper die 23, the bottom of the workbench 1 is installed with a lower die 22, the lower die 22 cooperates with the upper die 23 and is used for bending the workpiece;

[0026] The positioning assembly 3 comprises a fixed seat 31, the fixed seat 31 is symmetrically arranged, the two fixed seats 31 are respectively installed on the inner side walls of the workbench 1, the inside of the fixed seat 31 is installed with a spring plate 32, the fixed seat 31 is used for fixing the spring plate 32, one end of the spring plate 32 is hinged with a fixed groove 33, the fixed groove 33 is used for positioning the workpiece, the spring plate 32 is used for supporting the fixed groove 33, the bottom of the fixed groove 33 is fixedly connected with a pull rod 38, the bottom of the workbench 1 is provided with a through groove 37, one end of the pull rod 38 penetrates through the inside of the through groove 37 and is installed with a piston 39, the bottom of the workbench 1 is symmetrically fixedly connected with two housings 36, the piston 39 is slidingly connected in the inside of the housing 36, the fixed groove 33 drives the pull rod 38 to slide in the inside of the through groove 37, so as to play a guiding role for the fixed groove 33, one end of the housing 36 is communicated with an air pipe 34, the end of the air pipe 34 away from the housing 36 is provided on one side of the workbench 1, the air pipe 34 is used for conveying the air sucked into the housing 36, when the fixed groove 33 drives the pull rod 38 to move, the pull rod 38 drives the piston 39 to slide in the inside of the housing 36, so that the external air can be sucked into the housing 36 through the air pipe 34, the bottom of the spring plate 32 is fixedly connected with a sliding rod 391, the bottom of the sliding rod 391 is inserted into the inside of the through groove 37, and the sliding rod 391 is used for positioning the spring plate 32;

[0027] The outside wall of the air pipe 34 is installed with a one-way valve 35, the one-way valve 35 is used for closing the air pipe 34, that is, the external air can be sucked into the housing 36 through the air pipe 34, but the air in the housing 36 cannot be discharged through the one-way valve 35 and the air pipe 34, the bottom of the two housings 36 is provided with an exhaust hole 393, the exhaust hole 393 is used for discharging the air in the housing 36, the inside of the exhaust hole 393 is inserted with a plug 392, and the plug 392 is used for closing and plugging the exhaust hole 393;

[0028] The fixing assembly 4 comprises an elastic band 41 located at the top of the two fixing grooves 33, the elastic band 41 is used for wrapping the workpiece, the top of the elastic band 41 is uniformly provided with a heating wire 45, the heating wire 45 is used for heating the workpiece, the bottom of the plug cover 392 is provided with a micro switch 395, the micro switch 395 is electrically connected with the heating wire 45, and the micro switch 395 is used for controlling the opening and closing of the heating wire 45, the bottom of the shell 36 is rotationally connected with a blocking rod 394, the blocking rod 394 is used for limiting the stroke of the plug cover 392, so that the micro switch 395 can be triggered, the two sides of the elastic band 41 are symmetrically and fixedly connected with two fixing rings 43, the top of the two fixing grooves 33 is symmetrically and fixedly connected with two fixing rods 42, the two fixing rings 43 are respectively sleeved on the outer side walls of the two fixing rods 42, the fixing ring 43 is sleeved on the fixing rod 42, and the fixing ring 43 and the fixing rod 42 are matched to fix the elastic band 41, and the outer side wall of the fixing rod 42 is threadedly connected with a nut 44, the bottom of the nut 44 is attached to the top of the fixing ring 43, and the nut 44 is used for fixing the fixing ring 43 sleeved on the fixing rod 42.

[0029] Embodiment one

[0030] Specifically, the worker places the workpiece to be bent on the top of the lower die 22, the hydraulic cylinder 21 is started by control, the telescopic rod of the hydraulic cylinder 21 is elongated and drives the upper die 23 to move downward, and the upper die 23 and the lower die 22 are combined to bend the workpiece.

[0031] Embodiment two

[0032] Specifically, when the worker places the workpiece, the two fixing grooves 33 are pulled away from each other and press the spring plates 32, at the same time, the workpiece is placed on the top of the elastic band 41 and pressed downward, when the workpiece moves downward to the space between the two fixing grooves 33, the elastic force of the spring plates 32 drives the two fixing grooves 33 to move close to each other, so that the two sides of the workpiece and the elastic band 41 wrapped outside the workpiece are inserted into the two fixing grooves 33, thereby positioning the workpiece, the upper die 23 is pressed downward to press the top of the workpiece, so that the workpiece is bent, the workpiece is inserted into the lower die 22, and the elastic band 41 is located between the workpiece and the contact surface of the lower die 22, so as to avoid the abrasion of the lower die caused by the workpiece, since the two sides of the workpiece will change the angle during the bending process, that is, the two sides of the workpiece will swing upward, so the two sides of the workpiece drive the two fixing grooves 33 to swing, at the same time, the inner cavities of the fixing grooves 33 are large, the two sides of the workpiece swing in the inner cavities of the fixing grooves 33 during the bending process, so that the fixing grooves 33 will not block the two sides of the workpiece, at the same time, the two fixing grooves 33 move close to each other to press the workpiece under the influence of the elastic force of the spring plates 32, thereby improving the stability of the workpiece during the bending process;

[0033] After the workpiece is bent, the upper die 23 moves up, the worker removes the plug cover 392 from the exhaust hole 393, and the exhaust hole 393 is in an open state. At this time, the two fixed grooves 33 are pulled apart again, and the two fixed grooves 33 drive the fixed rod 42 and the fixed ring 43 to move, so that the elastic belt 41 is pulled in the horizontal direction. At this time, the elastic belt 41 is pulled out of the fixed groove 33 under the action of its own elasticity and restores to the horizontal state, and the bent workpiece in the lower die 22 is ejected under the influence of the elastic force of the elastic belt 41. Not only is the workpiece prevented from being stuck in the lower die 22, but also the falling of debris during workpiece bending is avoided, which affects the cleanliness of the lower die 22.

[0034] Example three

[0035] Specifically, the worker inserts the plug cover 392 into the inside of the exhaust hole 393, and rotates the blocking rod 394 to block the plug cover 392. During the bending of the workpiece, the distance between the two sides of the workpiece will be reduced, so the two fixed grooves 33 are close to each other under the influence of the elastic force of the spring plate 32. When the two fixed grooves 33 are close to each other, they respectively drive the two pull rods 38 to slide in the through groove 37. At this time, the pull rod 38 pulls the piston 39 to slide in the housing 36, and the external air is sucked into the housing 36 through the air pipe 34 and the one-way valve 35.

[0036] When the upper die 23 and the lower die 22 are combined, the workpiece stops bending, and the two fixed grooves 33 stop moving. The upper die 23 moves away from the workpiece, and the air pipe 34 is blocked by the one-way valve 35, so that the air in the housing 36 cannot be discharged. After the workpiece is bent, it will rebound, so that the distance between the two sides increases, and then the two fixed grooves 33 are separated from each other. The fixed groove 33 drives the pull rod 38 and the piston 39 to move reversely, and the piston 39 extrudes the air in the housing 36.

[0037] If the workpiece rebounds in a small range, the piston 39 has a small sliding stroke, and the air pressure in the housing 36 is small. The plug cover 392 used to close the exhaust hole 393 remains stationary, and the worker can complete the workpiece taking through the above steps.

[0038] If the workpiece rebound range is large, the piston 39 has a large sliding stroke, so that the air pressure in the shell 36 is large, the plug 392 in the exhaust hole 393 is large, the plug 392 slides in the inside of the exhaust hole 393 and drives the micro switch 395 to move down, the stop rod 394 blocks the plug 392, so that the plug 392 remains in the inside of the exhaust hole 393 and cannot be separated from the exhaust hole 393, the micro switch 395 contacts the stop rod 394, so that the micro switch 395 is triggered, the micro switch 395 controls the heating wire 45 to start, and the heating wire 45 acts on the workpiece bending part, that is, the plasticity of the workpiece is improved, and the sliding stroke of the micro switch 395 and the plug 392 is limited under the interception of the stop rod 394, and the plug 392 keeps the exhaust hole 393 closed, the piston 39 stops moving under the influence of the air pressure in the shell 36, and then the two fixed grooves 33 stop moving, and the two fixed grooves 33 cooperate to keep the workpiece in the state of extrusion and bending, thereby reducing the rebound range of the workpiece.

[0039] After the workpiece is heated and kept for a certain time, the worker turns the stop rod 394 to rotate, so that the stop rod 394 is away from the plug 392, the micro switch 395 is not triggered, the heating wire 45 stops heating, the worker pulls out the plug 392 from the exhaust hole 393, the gas in the shell 36 is released, the worker takes down the workpiece, and reinserts the plug 392 into the exhaust hole 393.

[0040] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0041] The bending machine processing positioning device provided by the embodiment of the present application is described in detail above, and the principle and implementation mode of the present application are described by applying specific examples. The above embodiment is only used to help understand the technical scheme of the present application and its core idea; those skilled in the art should understand that the technical scheme recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the present application.

Claims

1. A bending machine processing positioning device, comprising a worktable (1), characterized in that: The top of the workbench (1) is provided with a bending assembly (2), the bottom of the workbench (1) is provided with a positioning assembly (3), the top of the positioning assembly (3) is provided with a fixing assembly (4), the positioning assembly (3) comprises a fixing seat (31), the fixing seat (31) is symmetrically arranged, two fixing seats (31) are arranged on the inner side wall of the workbench (1) respectively, a spring plate (32) is arranged in the fixing seat (31), the fixing seat (31) is used for fixing the spring plate (32), one end of the spring plate (32) is hingedly provided with a fixing groove (33), the fixing groove (33) is used for positioning the workpiece, the spring plate (32) is used for supporting the fixing groove (33), two fixing grooves (33) are close to each other under the influence of the spring force of the spring plate (32) and press the workpiece, the bottom of the fixing groove (33) is fixedly connected with a pull rod (38), the bottom of the workbench (1) is provided with a through groove (37), one end of the pull rod (38) penetrates through the inside of the through groove (37) and is provided with a piston (39), the bottom of the workbench (1) is symmetrically fixedly connected with two housings (36), the piston (39) is slidably connected in the housing (36), one end of the housing (36) is communicated with an air pipe (34), the air pipe (34) is arranged on one side of the workbench (1) away from the housing (36), the air pipe (34) is used for conveying the air in the housing (36), when the fixing groove (33) drives the pull rod (38) to move, the pull rod (38) drives the piston (39) to slide in the housing (36), the external air is sucked into the housing (36) through the air pipe (34), the bottom of the spring plate (32) is fixedly connected with a sliding rod (391), the bottom of the sliding rod (391) is inserted into the through groove (37), and the sliding rod (391) is used for positioning the spring plate (32), the fixing assembly (4) comprises an elastic belt (41), the elastic belt (41) is arranged on the top of the two fixing grooves (33), the top of the elastic belt (41) is uniformly provided with a heating wire (45), the two sides of the elastic belt (41) are symmetrically fixedly connected with two fixed rings (43), the top of the two fixing grooves (33) is symmetrically fixedly connected with two fixed rods (42), and the two fixed rings (43) are respectively sleeved on the outer side walls of the two fixed rods (42); The bottom of the two housings (36) is provided with an exhaust hole (393), and the exhaust hole (393) is inserted with a plug (392); The bottom of the plug (392) is provided with a micro switch (395), and the bottom of the housing (36) is rotatably connected with a blocking rod (394); The micro switch (395) and the heating wire (45) are electrically connected, the micro switch (395) is used for controlling the opening and closing of the heating wire (45), the blocking rod (394) is used for limiting the stroke of the plug (392), and the micro switch (395) can be triggered.

2. A bending machine tool positioning device according to claim 1, characterized in that: The bending assembly (2) comprises a hydraulic cylinder (21) installed on the top of the workbench (1), the telescopic rod of the hydraulic cylinder (21) penetrates through the top of the workbench (1) and is installed with an upper die (23), and the bottom of the workbench (1) is installed with a lower die (22).

3. The apparatus of claim 1 wherein: The outer side wall of the fixing rod (42) is threadedly connected with a nut (44), and the bottom of the nut (44) is attached to the top of the fixing ring (43).

Images