Bending machine avoiding mother knife driving structure

Abstract

The utility model discloses a bending machine avoiding mother knife driving structure which comprises a fixed pressing knife and a swinging mother knife, the swinging mother knife is arranged on one side of the fixed pressing knife, a mother knife sliding groove is formed in the swinging mother knife, the swinging pressing knife is arranged in the swinging mother knife, and the swinging pressing knife is connected with the mother knife sliding groove through a long rotating shaft. A bearing is arranged at the end, extending out of the female cutter sliding groove, of the long rotating shaft, the upper ejecting shaft is fixed to one side of the swing female cutter through two ejecting shaft seats, and a cutter locking air cylinder is arranged at the other end of the long rotating shaft; through the arrangement of the upper jacking shaft, the poking wheel, the bearing with the handle, the poking arm, the downward pressing cam plate and the bearing, the poking wheel can be driven to move downwards through the gravity of the upper jacking shaft and accessories such as the poking wheel and the positioning sleeve fixed to the upper jacking shaft, and therefore the bearing with the handle clamped in the annular groove of the poking wheel drives the poking arm and the downward pressing cam plate to move downwards; a bearing is arranged on the upper jacking shaft, a downward pressing cam plate presses the bearing, the long rotating shaft drives the swing pressing cutter to move along a female cutter sliding groove to conduct avoiding, the avoiding action is conducted through gravity and mechanical linkage, and therefore energy loss is reduced, and through arrangement of a tension spring, when the upper jacking shaft makes contact with a workpiece and moves upwards, the tension spring pulls the long rotating shaft and the swing pressing cutter to move upwards, and the workpiece is driven to move upwards. And through the arrangement of a cutter locking air cylinder and an upper push plate, the upper push plate can make contact with an upper push cover, and the position of the swing pressing cutter is fixed.

Description

Technical Field

[0001] The present application relates to the technical field of sheet metal bending, and in particular to a bending machine avoidance tool drive structure. Background Art

[0002] In the prior art, the hinge knife structure for bending the center plate to fold the four sides and two knives mostly adopts hinge knives, which are of various forms, some are powered, and some are used by their own gravity. Generally, they are large in size, heavy, and inconvenient to disassemble and assemble. Power-driven ones are either complex in structure or large in size.

[0003] The modified avoidance mother knife is as follows Figure 7 As shown, a slide groove is provided on the master knife, and a hinged cylinder is usually used to drive the long rotating shaft to rotate along the slide groove. This driving method is relatively cumbersome to debug, and the avoidance action is completely driven by the cylinder, which increases energy waste and affects the bending efficiency of the workpiece. Therefore, this application proposes a bending machine avoidance master knife driving structure to solve such problems. Summary of the invention

[0004] The technical problem to be solved by the present application is to overcome the existing defects and provide a bending machine avoidance mother knife driving structure, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a bending machine avoidance tool driving structure, comprising a fixed pressing knife and a swinging tool, wherein a swinging tool is arranged on one side of the fixed pressing knife, a tool slide groove is provided on the swinging tool, a swing pressing knife is arranged inside the swinging tool, the swing pressing knife is connected with the tool slide groove through a long rotating shaft, and a bearing is arranged at one end of the long rotating shaft extending out of the tool slide groove, and also comprises an upper push shaft and a knife locking cylinder, wherein the upper push shaft is fixed to one side of the swinging tool through two push shaft seats, and the upper push shaft is slidably connected with the push shaft seat, a dial wheel is arranged on the upper push shaft, and dial arms are slidably connected with both sides of the dial wheel, and the two dial arms are installed on the swinging tool through pin shafts, a downward pressing cam plate is arranged between one of the dial arms and the swinging tool, and the lower surface of the downward pressing cam plate contacts with the bearing on the long rotating shaft, one end of the dial arm is connected with the long rotating shaft through a tension spring, a knife locking cylinder is arranged on one side of the push shaft seat, and an upper push plate is arranged at the telescopic end of the knife locking cylinder.

[0006] Furthermore, an annular groove is provided on the outer side of the dial wheel, and two bearings with handles are slidably connected in the annular groove, and the two bearings with handles are respectively fixed on the two dial arms.

[0007] Furthermore, an upper push cover is arranged at the upper end of the upper push shaft, and the upper push cover is arranged above the upper push plate, and a soft pressure block is arranged at the lower end of the upper push shaft.

[0008] Furthermore, a positioning sleeve is arranged on the outer side of the upper top shaft, and the thumbwheel and the positioning sleeve are both placed between the two top shaft seats.

[0009] Furthermore, the lever arm is rotationally connected to the swinging mother knife via a pin shaft.

[0010] Compared with the prior art: the present application can drive the thumb wheel to move downward through the gravity of the upper thumb wheel, the thumb wheel fixed on the upper thumb wheel, the positioning sleeve and other accessories, through the arrangement of the upper thumb wheel, the thumb wheel, the positioning sleeve and other accessories, so that the thumb wheel with the handle stuck in the annular groove of the thumb wheel drives the thumb arm and the downward pressure cam plate to move downward, and the downward pressure cam plate presses the bearing, so that the long rotating shaft drives the swinging knife to move along the mother knife slide groove for avoidance, and the avoidance action is performed through gravity and mechanical linkage, thereby reducing energy loss, and through the arrangement of the tension spring, when the upper thumb shaft contacts the workpiece and moves upward, the tension spring pulls the long rotating shaft and the swinging knife to move upward until the lower bottom surface of the swinging knife is flush with the lower bottom surface of the fixed knife, and through the arrangement of the knife locking cylinder and the upper push plate, the upper push plate can be made to contact the upper push cover to fix the position of the swinging knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of this application;

[0012] Figure 2 It is a schematic diagram of the structure of the driving structure;

[0013] Figure 3 This is the main view of the working status of this application;

[0014] Figure 4 A side view of the working state of this application;

[0015] Figure 5 This is the main view of the avoidance state of this application;

[0016] Figure 6 A side view of the avoidance state of this application;

[0017] Figure 7 To avoid the mother knife structure.

[0018] In the figure: 1 fixed knife pressing, 2 swing mother knife, 3 swing knife pressing, 4 mother knife slide, 5 long rotating shaft, 6 bearing, 7 tension spring, 8 downward pressing cam plate, 9 top shaft seat, 10 upper top shaft, 11 dial wheel, 12 positioning sleeve, 13 soft pressing block, 14 bearing with handle, 15 dial arm, 16 knife locking cylinder, 17 upper push cover, 18 upper push plate, 19 pin shaft. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application (for the convenience of description and understanding, the following is Figure 2 All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] See also Figure 1-6 The present application provides a technical solution for a bending machine avoidance mother knife driving structure: a bending machine avoidance mother knife driving structure, including a fixed pressing knife 1 and a swinging mother knife 2, a swinging mother knife 2 is arranged on one side of the fixed pressing knife 1, a mother knife slide 4 is opened on the swinging mother knife 2, a swinging pressing knife 3 is arranged inside the swinging mother knife 2, the swinging pressing knife 3 is connected to the mother knife slide 4 through a long rotating shaft 5, and a bearing 6 is arranged at one end of the long rotating shaft 5 extending out of the mother knife slide 4, and also includes an upper top shaft 10 and a knife locking cylinder 16, the upper top shaft 10 is fixed to the swing mother knife through two top shaft seats 9 On one side of the knife 2, the upper top shaft 10 is slidably connected with the top shaft seat 9, a dial wheel 11 is arranged on the upper top shaft 10, and dial arms 15 are slidably connected on both sides of the dial wheel 11. The two dial arms 15 are installed on the swinging mother knife 2 through pin shafts 19, and a downward pressing cam plate 8 is arranged between one of the dial arms 15 and the swinging mother knife 2. The lower surface of the downward pressing cam plate 8 contacts the bearing 6 on the long rotating shaft 5, and one end of the dial arm 15 is connected to the long rotating shaft 5 through a tension spring 7. A knife locking cylinder 16 is arranged on one side of the top shaft seat 9, and an upper push plate 18 is arranged at the telescopic end of the knife locking cylinder 16.

[0021] Specifically, the swinging mother knife 2 is fixed on the pressure plate of the bending machine, and the swinging pressing knife 3 is clamped in the mother knife slide groove 4 through the short rotating shaft and the long rotating shaft, so that the swinging pressing knife 3 slides along the mother knife slide groove 4, thereby realizing the avoidance action.

[0022] More specifically, the top shaft seat 9 is fixed to the swinging mother knife 2 by bolts, the knife locking cylinder 16 is fixed to the top shaft seat 9 by a cylinder seat and bolts, and the upper push plate 18 is fixed to the telescopic end of the knife locking cylinder 16 by two nuts.

[0023] The lever arm 15 is rotatably connected to the swinging mother knife 2 via the pin shaft 19, so that the lever arm 15 can rotate around the pin shaft 19 as the center of the circle.

[0024] After the workpiece is bent, the swinging mother knife 2 is fixed on the upper and lower pressure plates of the bending machine, the pressure plate moves upward, and the swinging mother knife 2 moves upward with the bending machine pressure plate. The upper top shaft 10 drives the thumb wheel 11 to move downward relative to the swinging mother knife 2 by its own gravity and the gravity of the accessories fixed on the shaft, and makes the lever arm 15 slidingly connected to the thumb wheel 11 swing downward, and the downward pressure cam plate 8 fixed on the lever arm 15 swings downward with the lever arm 15, pushing the bearing 6 and the long rotating shaft 5 to slide along the mother knife slide groove 4 on the swinging mother knife 2, driving the swinging pressure knife 3 to swing in the direction of the fixed pressure knife 1, and exiting the workpiece folding groove, the bending machine pressure plate continues to move upward, driving all the pressure knives to move up and leave the workpiece, and the workpiece exits to complete the avoidance action.

[0025] Furthermore, an annular groove is formed on the outer side of the thumbwheel 11 , and two bearings with handles 14 are slidably connected in the annular groove. The two bearings with handles 14 are respectively fixed on the two thumbwheel arms 15 .

[0026] Specifically, the dial wheel 11 is fixed to the upper top shaft 10 by bolts, and the corners of the dial wheel 11 are all provided with R angles. The handle bearing 14 is placed in the annular groove of the dial wheel 11, and the handle bearing 14 is fixed to the dial arm 15 by bolts. The handle bearing 14 can slide in the annular groove and drive the dial arm 15 to rotate up and down with the pin shaft 19 as the center of the circle, and the downward pressing cam plate 8 on the dial arm 15 presses the bearing 6 on the long rotating shaft 5, so that the long rotating shaft 5 drives the swinging pressing knife 3 to move downward along the mother knife slide groove 4 to press the plate, or the tension spring 7 on the dial arm 15 pulls the long rotating shaft 5 to drive the swinging pressing knife 3 to move upward along the mother knife slide groove 4 to avoid the work.

[0027] Furthermore, an upper push cover 17 is disposed at the upper end of the upper push shaft 10 , and the upper push cover 17 is disposed above the upper push plate 18 , and a soft pressure block 13 is disposed at the lower end of the upper push shaft 10 .

[0028] Specifically, the soft pressure block 13 and the upper push cover 17 are fixed to the upper push shaft 10 by bolts. The setting of the soft pressure block 13 can prevent the upper push shaft 10 from crushing the plate. The setting of the upper push cover 17 makes it convenient for the knife locking cylinder 16 to drive the upper push plate 18 to lock the upper push shaft 10, thereby fixing the swinging knife pressing knife 3.

[0029] Furthermore, a positioning sleeve 12 is provided on the outer side of the upper top shaft 10 , and the thumbwheel 11 and the positioning sleeve 12 are both placed between the two top shaft seats 9 .

[0030] Specifically, by setting the positioning sleeve 12, the positions of the handle bearing 14, the lever arm 15, the downward pressing cam plate 8, the long rotating shaft 5, the bearing 6 and the swinging pressing knife 3 can be restricted, and the positioning sleeve 12 is fixed to the upper top shaft 10 by bolts.

[0031] When in use: after the next workpiece is sent to the bottom of the swinging knife 3 and the fixed knife 1, the bending machine pressure plate moves downward, the swinging mother knife 2 moves downward with the bending machine pressure plate, and the soft pressure block 13 fixed on the upper top shaft 10 first contacts the workpiece. As the bending machine pressure plate moves downward, the upper top shaft 10 moves upward relative to the swinging mother knife 2, driving the dial wheel 11 and the handle bearing 14 stuck in the dial wheel 11 to move upward, and the handle bearing 14 drives the dial arm 15 to swing upward, and the downward pressure cam plate 8 fixed on the dial arm 15 swings upward with the dial arm 15, and the tension spring 7 fixed on the dial arm 15 pulls the long rotating shaft 5 to move upward. The long rotating shaft 5 drives the swinging knife 3 to swing outward along the mother knife slide groove 4 on the swinging mother knife 2 until the lower bottom surface of the swinging knife 3 is flush with the lower bottom surface of the fixed knife 1. The bending machine pressure plate continues to move downward, and the fixed knife 1 and the swinging knife 3 press the workpiece to start the first knife bending. At the same time, the knife locking cylinder 16 drives the upper push plate 18 to support the upper push cover 17 above the upper ejector shaft 10 to prevent the upper ejector shaft 10 from falling, thereby fixing the swinging knife 3. When performing the second continuous bending, the bending machine pressure plate only needs to rise a small amount to drive all the knives to leave the workpiece, and the workpiece is fed forward for the second bending.

[0032] After the workpiece is bent, the bending machine pressure plate moves upward, and the swinging mother knife 2 moves upward with the bending machine pressure plate. The upper top shaft 10 drives the thumb wheel 11 to move downward relative to the swinging mother knife 2 by its own gravity and the weight of the accessories fixed on the shaft. The handle bearing 14 stuck in the thumb wheel 11 drives the lever arm 15 to swing downward. The downward pressure cam plate 8 fixed on the lever arm 15 swings downward with the lever arm 15, pushing the bearing 6 and the long rotating shaft 5 to slide along the mother knife slide groove 4 on the swinging mother knife 2, driving the swinging pressure knife 3 to swing toward the direction of the fixed pressure knife 1, and exiting the workpiece folding groove. The bending machine pressure plate continues to move upward, driving all the pressure knives to move up and leave the workpiece, and the workpiece exits to complete the avoidance action.

[0033] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A bending machine avoidance mother knife driving structure, comprising a fixed pressing knife (1) and a swinging mother knife (2), wherein a swinging mother knife (2) is arranged on one side of the fixed pressing knife (1), a mother knife slide groove (4) is provided on the swinging mother knife (2), a swinging pressing knife (3) is arranged inside the swinging mother knife (2), the swinging pressing knife (3) is connected to the mother knife slide groove (4) through a long rotating shaft (5), and a bearing (6) is arranged on one end of the long rotating shaft (5) extending out of the mother knife slide groove (4), characterized in that: The invention also comprises an upper push shaft (10) and a knife locking cylinder (16), wherein the upper push shaft (10) is fixed to one side of the swinging mother knife (2) through two push shaft seats (9), and the upper push shaft (10) is slidably connected to the push shaft seat (9), a thumbwheel (11) is arranged on the upper push shaft (10), and thumbwheel (11) is slidably connected to thumbwheel arms (15) on both sides, and the two thumbwheel arms (15) are mounted on the swinging mother knife (2) through pins (19), a downward pressing cam plate (8) is arranged between one of the thumbwheel arms (15) and the swinging mother knife (2), and the lower surface of the downward pressing cam plate (8) contacts the bearing (6) on the long rotating shaft (5), and one end of the thumbwheel arm (15) is connected to the long rotating shaft (5) through a tension spring (7), and a knife locking cylinder (16) is arranged on one side of the push shaft seat (9), and an upward pushing plate (18) is arranged at the telescopic end of the knife locking cylinder (16).

2. A bending machine avoidance tool drive structure according to claim 1, characterized in that: An annular groove is provided on the outer side of the thumbwheel (11), and two shank bearings (14) are slidably connected in the annular groove. The two shank bearings (14) are respectively fixed on two thumbwheel arms (15).

3. A bending machine avoidance tool drive structure according to claim 1, characterized in that: An upper push cover (17) is provided at the upper end of the upper push shaft (10), and the upper push cover (17) is arranged above the upper push plate (18). A soft pressure block (13) is provided at the lower end of the upper push shaft (10).

4. A bending machine avoidance tool drive structure according to claim 3, characterized in that: A positioning sleeve (12) is arranged on the outer side of the upper top shaft (10), and the thumbwheel (11) and the positioning sleeve (12) are both placed between the two top shaft seats (9).

5. The bending machine avoidance tool drive structure according to claim 1, characterized in that: The lever arm (15) is rotationally connected to the swinging mother knife (2) via a pin shaft (19).

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