Hydraulic device of bending machine

Abstract

The utility model relates to the technical field of bending machines, in particular to a hydraulic device of a bending machine, which comprises a box body, a hydraulic cylinder is fixedly connected to the inner wall of the top of the box body, straight tubes are fixedly connected to a telescopic rod of the hydraulic cylinder and the bottom of the inner wall of the box body, and a limiting rod is fixedly connected to one side of the top of the upper straight tube. A sleeve is in clearance fit with the lower portion of the outer wall of the limiting rod. Through cooperation of a box body, a hydraulic cylinder, a straight barrel, a sleeve, a barrel body and a lubricating structure, when the device is used, lubricating oil can be injected through a valve at the top of the barrel body, a sponge block absorbs the lubricating oil, and when lubricating work needs to be carried out, an electric push rod drives a short block to move inwards, and the short block extrudes the sponge block; and the lubricating oil flows inwards through the inclined surface of the filter screen serious inclined block and flows out through the channel, so that the lubricating work is realized, workers can conveniently and automatically carry out the lubricating work, and the service life is prevented from being seriously influenced by abrasion.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bending machine, concretely to a hydraulic device of bending machine. BACKGROUND

[0002] Hydraulic bending machine is a kind of metal plate processing equipment driven by hydraulic system, and it is a kind of high-tech product that combines mechanical, electrical and hydraulic technology organically.

[0003] The hydraulic device of the existing bending machine (application number: 201520524488.8) can be started with almost no pressure and flow when the servo motor is started, and the starting power is very small, which greatly improves the service life of the sealing element, component and oil usage. The above still exists, when bending the plate, bending machine is often used, bending work is realized through the cooperation of pressing block and lower die, when the hydraulic cylinder drives the pressing block to move up and down, in order to ensure the stability of the pressing block operation, a limit rod is often arranged, and there is a certain friction force between the limit rod and the sleeve, which is not convenient for automatic lubrication work of workers, which is easy to cause serious wear, and thus affects the service life, and when bending the plate, different angle bending work is often needed for the plate, at this time, different pressing blocks and dies need to be used, which is not convenient for workers to quickly disassemble the pressing block and die, and thus is not convenient for workers to replace. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings that workers cannot automatically lubricate, which easily causes serious wear and affects the service life, and workers cannot quickly disassemble the pressing block and die, and thus workers cannot replace, and provides a hydraulic device of bending machine.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of hydraulic device of bending machine is designed, including box, the top inner wall of the box is fixedly connected with hydraulic cylinder, the telescopic rod of the hydraulic cylinder and the inner wall bottom of box are all fixedly connected with straight cylinder, the top side of the top of straight cylinder is fixedly connected with limit rod, the outer wall lower part of the limit rod is gap matched with sleeve, the outer wall lower part of the sleeve is fixedly connected with the top side inner wall of box, the sleeve one side upper side is fixedly connected with barrel, the one side of the barrel is equipped with lubricating structure.

[0007] Preferably, the lubricating structure comprises an electric push rod, one side of the outer wall of the electric push rod is fixedly connected with the upper inner wall of one side of the barrel, the telescopic rod of the electric push rod is fixedly connected with a short block, the bottom of the short block is attached with an inclined block, the bottom of the inclined block is fixedly connected with the inner wall bottom of the barrel, one end of the short block is attached with a sponge block, one end of the sponge block is fixedly connected with a filter screen, the upper and lower ends of the filter screen are fixedly connected with the inner wall of one side of the barrel and the top of one side of the inclined block respectively, and one side of the filter screen is provided with a channel.

[0008] Preferably, the inner wall of one end of the straight barrel is rotatably connected with a double-head threaded rod through a bearing.

[0009] Preferably, the outer wall of one side of the double-head threaded rod is threadedly connected with a curved block, and the outer wall of one side of the curved block is in clearance fit with the through groove of one side of the straight barrel.

[0010] Preferably, the outer wall of one side of the curved block is in clearance fit with the inner wall of one end of the block body and the recess of one side of the square rod, and the outer wall of the square rod is in clearance fit with the inner wall of the block body.

[0011] Preferably, the square rods on the upper and lower sides are fixedly connected with the top of one side of the pressing block and the bottom of one side of the mold respectively, and one end of the block body is fixedly connected with the outer wall of one side of the straight barrel.

[0012] The hydraulic device of the bending machine has the beneficial effects that: through the cooperation of the box body, the hydraulic cylinder, the straight barrel, the sleeve, the barrel and the lubricating structure, when the device is used, the lubricating oil can be injected through the top valve of the barrel, the sponge block absorbs the lubricating oil, when the lubricating work is needed, the electric push rod drives the short block to move inward, the short block extrudes the sponge block, and then the lubricating oil flows inward through the inclined surface of the filter screen and the inclined block, the lubricating oil flows out through the channel, and then the lubricating work is realized, the automatic lubricating work of the staff is facilitated, and the influence of serious wear on the service life is avoided.

[0013] Through the cooperation of the straight barrel, the pressing block, the mold, the double-head threaded rod, the curved block, the block body and the square rod, when the device is used, the double-head threaded rod can be rotated, the double-head threaded rod drives the curved block to move inward, the curved block is moved out from the inner walls of the block body and the square rod, the pressing block and the mold are moved inward, and then the staff can quickly disassemble the pressing block and the mold, and the staff can replace the pressing block and the mold. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the utility model;

[0015] Fig. 2 It is a structural schematic view of the box body, the straight barrel and the hydraulic cylinder of the utility model;

[0016] Fig. 3 It is sleeve, limit rod and barrel structure schematic view of the utility model;

[0017] Fig. 4 It is filter screen, sponge block and short block structure schematic view of the utility model;

[0018] Fig. 5 It is double head threaded rod, curved block and straight cylinder structure schematic view of the utility model;

[0019] Fig. 6 It is limit rod, passageway and ball structure schematic view of the utility model.

[0020] In the drawing: 1, box, 2, lubrication structure, 2a1, filter screen, 2a2, sponge block, 2a3, short block, 2a4, inclined block, 2a5, electric push rod, 2a6, passageway, 2b1, ball, 3, pressing block, 4, mould, 5, block, 6, square rod, 7, double head threaded rod, 8, curved block, 9, straight cylinder, 10, hydraulic cylinder, 11, sleeve, 12, limit rod, 13, barrel. DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the drawings:

[0022] Example 1:

[0023] Refer to the drawings Figs. 1-6 In this embodiment, a kind of hydraulic device of bending machine, including box 1, the top inner wall of box 1 is fixedly connected with hydraulic cylinder 10, the telescopic rod of hydraulic cylinder 10 is fixedly connected with the inner wall bottom of box 1, the top one side of upper straight cylinder 9 is fixedly connected with limit rod 12, the outer wall lower clearance of limit rod 12 is matched with sleeve 11, the outer wall lower of sleeve 11 is fixedly connected with the top one side inner wall of box 1, the one side upper of sleeve 11 is fixedly connected with barrel 13.

[0024] The inner wall of one end of straight cylinder 9 is rotatably connected with double head threaded rod 7 by bearing, bearing can rotate when double head threaded rod 7 is stressed in the inner wall of one end of straight cylinder 9, the outer wall one side of double head threaded rod 7 is threadedly connected with curved block 8, the outer wall one side of curved block 8 is matched with the one side through groove of straight cylinder 9 clearance, the one side through groove of straight cylinder 9 plays a limiting role when curved block 8 is stressed and moves left and right, the outer wall one side of curved block 8 is matched with the one end inner wall of block 5 and the one side recess of square rod 6 clearance, the outer wall of square rod 6 is matched with the inner wall of block 5 clearance.

[0025] The top and bottom two sides square rod 6 are fixedly connected with the top one side of pressing block 3 and the bottom one side of mould 4 respectively, the one end of block 5 is fixedly connected with the outer wall one side of straight cylinder 9, the one side of barrel 13 is equipped with lubrication structure 2, lubrication structure 2 is convenient for staff to carry out automatic lubrication work, avoids that serious wear and tear influences service life.

[0026] The lubrication structure 2 includes an electric push rod 2a5. One side of the outer wall of the electric push rod 2a5 is fixedly connected to the inner wall above one side of the cylinder 13. A valve is fixedly connected to the inner wall of the top of the cylinder 13. The model of the electric push rod 2a5 is determined according to the actual use. A short block 2a3 is fixedly connected to the telescopic rod of the electric push rod 2a5. An inclined block 2a4 is attached to the bottom of the short block 2a3. The bottom of the inclined block 2a4 is fixedly connected to the bottom of the inner wall of the cylinder 13.

[0027] One end of the short block 2a3 is attached to a sponge block 2a2, which is used to absorb lubricating oil. One end of the sponge block 2a2 is fixedly connected to a filter screen 2a1. The material and mesh size of the filter screen 2a1 are determined according to the actual use. The upper and lower ends of the filter screen 2a1 are fixedly connected to one side of the inner wall of the cylinder 13 and the top side of the inclined block 2a4, respectively. One side of the filter screen 2a1 is provided with a channel 2a6, which is machined on the lower inner wall of the sleeve 11 to facilitate automatic lubrication by the operator and avoid serious wear that affects the service life.

[0028] Working principle:

[0029] When bending sheet metal:

[0030] The sheet metal is placed on top of the mold 4. The external control module is controlled to make the hydraulic cylinder 10 move the upper straight cylinder 9 downward, which in turn moves the pressure block 3 downward. The pressure block 3 and the mold 4 cooperate to achieve the bending of the sheet metal. Lubricating oil is injected through the valve at the top of the cylinder 13. The sponge block 2a2 absorbs the lubricating oil. When lubrication is required, the electric push rod 2a5 moves the short block 2a3 inward. The short block 2a3 squeezes the sponge block 2a2, which causes the lubricating oil to flow inward through the inclined surface of the filter screen 2a1 and the inclined block 2a4. The lubricating oil flows out through the channel 2a6, thus achieving lubrication and reducing wear. When the pressure block 3 and the mold 4 need to be replaced, the double-headed threaded rod 7 is rotated. The double-headed threaded rod 7 moves the curved block 8 inward, removing the curved block 8 from the inner wall of the block body 5 and the square rod 6. The pressure block 3 and the mold 4 are moved inward, which makes it easier for the staff to quickly disassemble and replace the pressure block 3 and the mold 4.

[0031] Example 2:

[0032] See attached document Figs. 1-6 In this embodiment, a hydraulic device for a bending machine, wherein the lubrication structure 2 may further include a ball 2b1, one side of the outer wall of the ball 2b1 is in clearance fit with the groove below the inner wall of the sleeve 12, and one end of the ball 2b1 is in contact with the lower side of the limiting rod 12.

[0033] Working principle:

[0034] When the limiting rod 12 is forced to move up and down, the limiting rod 12 makes the ball 2b1 roll, further reduces the abrasion, and improves the service life.

[0035] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A hydraulic device for a bending machine, comprising a housing (1), characterized in that: A hydraulic cylinder (10) is fixedly connected to the top inner wall of the box (1). A straight cylinder (9) is fixedly connected to the telescopic rod of the hydraulic cylinder (10) and the bottom of the inner wall of the box (1). A limit rod (12) is fixedly connected to the top side of the upper straight cylinder (9). A sleeve (11) is fitted with a gap below the outer wall of the limit rod (12). The lower part of the outer wall of the sleeve (11) is fixedly connected to the inner wall of the top side of the box (1). A cylinder (13) is fixedly connected to the upper side of one side of the sleeve (11). A lubrication structure (2) is provided on one side of the cylinder (13).

2. The hydraulic device of the bending machine according to claim 1, characterized in that: The lubrication structure (2) includes an electric push rod (2a5). One side of the outer wall of the electric push rod (2a5) is fixedly connected to the inner wall above one side of the cylinder (13). A short block (2a3) is fixedly connected to the telescopic rod of the electric push rod (2a5). An inclined block (2a4) is attached to the bottom of the short block (2a3). The bottom of the inclined block (2a4) is fixedly connected to the bottom of the inner wall of the cylinder (13). A sponge block (2a2) is attached to one end of the short block (2a3). A filter screen (2a1) is fixedly connected to one end of the sponge block (2a2). The upper and lower ends of the filter screen (2a1) are fixedly connected to one side of the inner wall of the cylinder (13) and the top side of the inclined block (2a4), respectively. A channel (2a6) is provided on one side of the filter screen (2a1). The channel (2a6) is machined on the lower inner wall of the sleeve (11).

3. The hydraulic device of the bending machine according to claim 1, characterized in that: One end of the straight cylinder (9) is rotatably connected to a double-threaded rod (7) via a bearing.

4. The hydraulic device of the bending machine according to claim 3, characterized in that: The outer wall of the double-threaded rod (7) is threaded with a curved block (8), and the outer wall of the curved block (8) is in clearance fit with the through groove on one side of the straight cylinder (9).

5. The hydraulic device of the bending machine according to claim 4, characterized in that: The outer wall of the curved block (8) is in clearance fit with the inner wall of one end of the block (5) and the groove of one side of the square rod (6), and the outer wall of the square rod (6) is in clearance fit with the inner wall of the block (5).

6. The hydraulic device of the bending machine according to claim 5, characterized in that: The square rods (6) on the upper and lower sides are fixedly connected to the top side of the pressure block (3) and the bottom side of the mold (4) respectively, and one end of the block (5) is fixedly connected to the outer wall side of the straight cylinder (9).

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