Metal plate bending machine

Abstract

The utility model relates to the technical field of plate bending, in particular to a metal plate bending machine which comprises a main machine frame, a feeding table and a bending die are arranged on the main machine frame, a hydraulic air cylinder is arranged on a mounting plate, a tool apron is arranged on a telescopic rod of the hydraulic air cylinder, a bending tool and a guide rod are arranged on the tool apron, and a lubricating oil box is arranged on the mounting plate. A guide groove and an oil storage groove are formed in the lubricating oil box, an oil sealing sleeve is arranged on the lubricating oil box, a ball groove is formed in the lubricating oil box, lubricating balls are arranged in the ball groove, an oil supplementing hole is formed in the lubricating oil box, a sealing column is inserted into the oil supplementing hole, a connecting column is arranged on the sealing column, a pull ring is arranged on the connecting column, and an elastic cushion is arranged on the pull ring. And the lubricating degree between the guide rod and the guide opening is improved, so that normal bending operation of the bending cutter on a metal plate is guaranteed, lubricating oil can be conveniently supplemented into the oil storage tank, and when the pull ring is lifted by fingers, the elastic contact comfort degree when the fingers pull the pull ring is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate bending, in particular to a metal plate bending machine. Background Art

[0002] The metal sheet bending device is a mechanical equipment used for bending metal sheets, and the commonly used ones are hydraulic bending devices.

[0003] During the specific use process, the bending die is first fixed on the main frame, and then the metal sheet that needs hydraulic bending is placed on the feeding table for feeding. Then the hydraulic cylinder is started to drive the upper tool holder to move downward through the guide sliding structure. The bending tool on the tool holder will move downward and combine with the bending die to bend the metal sheet below to a certain angle.

[0004] At present, the guide sliding structure of the existing metal sheet bending device is easily dried out after long-term use, which will cause wear between the guide sliding parts and affect the normal operation of the bending tool to bend the metal sheet. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a metal plate bending machine.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A sheet metal bending machine is designed, comprising a main frame, a feeding port is provided on the main frame, a feeding platform and a bending die are arranged on the main frame, a scale positioning bar and a mounting plate are provided on the main frame, a baffle plate is slidably connected to the scale positioning bar, a positioning screw is threadedly connected to the baffle plate, a hydraulic cylinder is provided on the mounting plate, a tool holder is provided on the telescopic rod of the hydraulic cylinder, and a bending tool and a guide rod are provided on the tool holder;

[0008] The mounting plate is provided with an oil lubricating box, a guide groove and an oil storage groove are provided in the oil lubricating box, an oil seal sleeve is provided on the oil lubricating box, a ball groove is provided in the oil lubricating box, and a lubricating ball is provided in the ball groove;

[0009] An oil supply hole is provided in the oil lubrication box, a sealing column is inserted into the oil supply hole, a connecting column is provided on the sealing column, a pull ring is provided on the connecting column, and an elastic pad is provided on the pull ring.

[0010] Furthermore, a guide opening is provided on the mounting plate, and the guide opening is slidably sleeved with the guide rod, and the top-view cross-section of the guide opening and the guide rod is a square structure.

[0011] Furthermore, the lubricating balls are rollingly engaged in the ball grooves and in rolling contact with the guide rods. The lubricating balls and the ball grooves form a group, which are two groups that are symmetrical on the left and right.

[0012] Furthermore, the guide groove is slidably connected to the guide rod, and the ball groove is connected to the guide groove and the oil storage groove respectively.

[0013] Furthermore, the sealing column is an overall cylindrical structure and is squeezed and inserted into the oil supply hole, and the oil supply hole is connected to the oil storage tank.

[0014] Furthermore, the elastic pad is an arc-shaped structure as a whole and has a thickness of twenty to twenty-five millimeters. The elastic pad is arranged on the inner wall surface of the pull ring.

[0015] Furthermore, the oil seal sleeve is arranged at the lower end opening of the oil lubrication box, and the oil seal sleeve is sleeved with the guide rod.

[0016] The metal sheet bending machine proposed in this utility model has the following beneficial effects:

[0017] 1. The utility model provides an oil box structure with an oil storage tank and lubricating balls on the mounting plate of the main frame. During the long-term hydraulic bending of metal plates, the outer wall surface of the guide rod is rolled lubricated, thereby improving the lubrication between the guide rod and the guide port, avoiding dry wear between the guide rod and the guide port, and ensuring the normal operation of the bending tool for bending metal plates.

[0018] 2. The utility model opens an oil filling hole on the oil box, sets a connecting column with a pull ring in the oil filling hole, and then sets a sealing column on the connecting column, so as to facilitate the replenishment of lubricating oil in the oil storage tank.

[0019] 3. The utility model provides an elastic pad on the pull ring, which improves the elastic contact comfort when the pull ring is pulled by the fingers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For the utility model Figure 1 A three-dimensional schematic diagram of the guide rod structure with an oil lubrication box;

[0022] Figure 3 It is a schematic top view of the overall structure of the utility model;

[0023] Figure 4 For the utility model Figure 3 Schematic diagram of the middle MM section;

[0024] Figure 5 For the utility model Figure 4 A local enlarged view of point N in the middle.

[0025] In the figure: 1 main frame; 10 feeding port; 11 feeding table; 12 bending die; 2 scale positioning bar; 21 baffle plate; 22 positioning screw; 3 mounting plate; 30 guide port; 31 hydraulic cylinder; 4 tool holder; 41 bending tool; 42 guide rod; 5 oil box; 51 guide groove; 52 oil filling hole; 53 oil storage tank; 54 oil seal sleeve; 6 connecting column; 61 pull ring; 62 sealing column; 63 elastic pad; 7 ball groove; 71 lubricating ball. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-5 A sheet metal bending machine includes a main frame 1, a feeding port 10 is opened on the main frame 1, a feeding platform 11 and a bending die 12 are provided on the main frame 1, a scale positioning bar 2 and a mounting plate 3 are provided on the main frame 1, a baffle plate 21 is slidably connected to the scale positioning bar 2, a positioning screw 22 is threadedly connected to the baffle plate 21, a hydraulic cylinder 31 is provided on the mounting plate 3, a tool holder 4 is provided on the telescopic rod of the hydraulic cylinder 31, and a bending tool 41 and a guide rod 42 are provided on the tool holder 4;

[0028] The mounting plate 3 is provided with an oil box 5, which has a guide groove 51 and an oil storage groove 53, an oil seal 54, and a ball groove 7 formed in the oil box 5. The ball groove 7 is provided with a lubricating ball 71.

[0029] An oil filling hole 52 is provided in the oil box 5, a sealing column 62 is inserted into the oil filling hole 52, a connecting column 6 is provided on the sealing column 62, a pull ring 61 is provided on the connecting column 6, and an elastic pad 63 is provided on the pull ring 61. Some structures recorded in this patent are commonly used structures of bending machines for metal sheets, which are existing technologies. Some existing structures are not drawn and marked, and there is no need to elaborate. Among them, the scale positioning bar 2 is preset with a size scale, combined with the baffle plate 21 and the positioning screw 22, to block and position the metal sheet passing through, thereby ensuring the distance size required for the designed bending.

[0030] The oil storage tank 53 is filled with lubricating oil.

[0031] The mounting plate 3 is provided with a guide opening 30 , which is slidably connected to the guide rod 42 . The top view cross-section of the guide opening 30 and the guide rod 42 is a square structure, thereby achieving guiding stability for the vertical movement of the bending tool 41 .

[0032] The lubricating balls 71 are rollingly engaged in the ball grooves 7 and in rolling contact with the guide rods 42 , so that the lubricating balls 71 can roll smoothly without slipping out of the ball grooves 7 .

[0033] The lubricating balls 71 and the ball grooves 7 form a group, which are two groups symmetrical on the left and right. The lubricating balls 71 are made of hard alloy steel, which is oil-resistant and durable.

[0034] The guide groove 51 is slidably connected to the guide rod 42 , and the ball groove 7 is connected to the guide groove 51 and the oil storage groove 53 respectively. When the lubricating ball 71 rolls, the lubricating oil can be rolled and evenly coated on the surface of the guide rod 42 .

[0035] The sealing column 62 is an overall cylindrical structure and is squeezed and inserted into the oil supply hole 52. The oil supply hole 52 is connected to the oil storage tank 53. The sealing column 62 is made of acrylic rubber, which is oil-resistant and durable, and can seal the oil supply hole 52.

[0036] The elastic pad 63 is an arc-shaped structure as a whole and has a thickness of 20 to 25 mm. The arc-shaped structure just matches the fingers, further improving the pulling comfort.

[0037] The elastic pad 63 is arranged on the inner wall surface of the pull ring 61. The elastic pad 63 is made of polyurethane material, has high elasticity, is wear-resistant and durable.

[0038] The oil seal sleeve 54 is arranged at the lower end opening of the oil lubricating box 5, and the oil seal sleeve 54 is sleeved with the guide rod 42. The oil seal sleeve 54 is made of fluororubber as a whole, which is oil-resistant and durable, ensuring the vertical sliding of the guide rod 42 and at the same time ensuring the sealing of this part to avoid oil leakage.

[0039] Working method: first fix the bending die 12 on the main frame 1, then place the metal sheet that needs hydraulic bending on the feeding table 11 and push the feed to the left through the feeding port 10. After the left end of the metal sheet is blocked and positioned with the baffle plate 21, turn the positioning screw 22 clockwise and position the baffle plate 21 on the scale positioning bar 2 to ensure the required bending distance. Then start the hydraulic cylinder 31 to drive the tool holder 4 and the bending tool 41 to move downward, and combine with the bending die 12 to achieve the effect of bending the metal sheet below at a certain angle. At the same time, the guide rod 42 will slide vertically along the guide port 30 (this is the existing technology).

[0040] During the long-term hydraulic bending of metal sheets, the guide rod 42 will slide vertically in the guide groove 51, and then drive the lubricating ball 71 to roll. At this time, the rolling lubricating ball 71 will roll the preset lubricating oil in the oil storage tank 53 evenly onto the surface of the guide rod 42, realizing rolling lubrication, improving the lubrication between the guide rod 42 and the guide port 30, avoiding dry wear between the guide rod 42 and the guide port 30, and thus ensuring the normal operation of the bending tool 41 for bending the metal sheet.

[0041] Moreover, the sealing column 62 can be pulled out by pulling the pull ring 61 upward with a finger, and then inserted into the oil filling hole 52 through the oil filling device (existing technology) to conveniently replenish the lubricating oil, thereby conveniently replenishing the lubricating oil in the oil storage tank 53.

[0042] In addition, when the finger pulls the pull ring 61 , the elastic pad 63 will achieve elastic contact with the pulled part of the finger, thereby improving the elastic contact comfort when the finger pulls the pull ring 61 .

[0043] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sheet metal bending machine, comprising a main frame (1), characterized in that: The main frame (1) is provided with a feeding port (10), the main frame (1) is provided with a feeding platform (11) and a bending die (12), the main frame (1) is provided with a scale positioning bar (2) and a mounting plate (3), the scale positioning bar (2) is slidably connected with a baffle plate (21), the baffle plate (21) is threadedly connected with a positioning screw (22), the mounting plate (3) is provided with a hydraulic cylinder (31), the telescopic rod of the hydraulic cylinder (31) is provided with a knife seat (4), and the knife seat (4) is provided with a bending tool (41) and a guide rod (42); An oil box (5) is provided on the mounting plate (3), a guide groove (51) and an oil storage groove (53) are provided in the oil box (5), an oil seal sleeve (54) is provided on the oil box (5), a ball groove (7) is provided in the oil box (5), and a lubricating ball (71) is provided in the ball groove (7); An oil supply hole (52) is provided in the oil lubrication box (5), a sealing column (62) is inserted into the oil supply hole (52), a connecting column (6) is provided on the sealing column (62), a pull ring (61) is provided on the connecting column (6), and an elastic pad (63) is provided on the pull ring (61).

2. The metal sheet bending machine according to claim 1, characterized in that: A guide opening (30) is provided on the mounting plate (3), and the guide opening (30) is slidably sleeved with the guide rod (42). The top view cross-section of the guide opening (30) and the guide rod (42) is a square structure.

3. The metal sheet bending machine according to claim 1, characterized in that: The lubricating balls (71) are rollingly engaged in the ball grooves (7) and are in rolling contact with the guide rods (42). The lubricating balls (71) and the ball grooves (7) form a group, which are two groups symmetrical on the left and right.

4. The metal sheet bending machine according to claim 1, characterized in that: The guide groove (51) is slidably sleeved with the guide rod (42), and the ball groove (7) is respectively connected to the guide groove (51) and the oil storage groove (53).

5. The metal sheet bending machine according to claim 1, characterized in that: The sealing column (62) has an overall cylindrical structure and is squeezed and inserted into the oil supply hole (52). The oil supply hole (52) is connected to the oil storage tank (53).

6. The metal sheet bending machine according to claim 1, characterized in that: The elastic pad (63) is an arc-shaped structure as a whole and has a thickness of twenty to twenty-five millimeters. The elastic pad (63) is arranged on the inner wall surface of the pull ring (61).

7. The metal sheet bending machine according to claim 1, characterized in that: The oil seal sleeve (54) is arranged at the lower end opening of the oil lubrication box (5), and the oil seal sleeve (54) is sleeved with the guide rod (42).

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