Bending auxiliary device for narrow and long metal plate workpiece

Abstract

The utility model relates to the technical field of bending equipment, in particular to an auxiliary bending device for a narrow and long metal plate workpiece. The tail of the narrow and long workpiece can be effectively limited and supported, the narrow and long workpiece can be pushed in an auxiliary mode, the bending treatment effect and efficiency of the narrow and long workpiece are improved, and the manual operation amount is reduced. Comprising a bending mechanism and a bearing and pushing mechanism, and the bending mechanism comprises a rack, a fixing frame fixedly installed on the rack, a rotating frame installed on the rack in a hinged mode, a first roller shaft rotationally installed on the rack and a driving cylinder providing power for rotation of the rotating frame; a second roll shaft and a third roll shaft are rotationally mounted on the fixed frame and the rotating frame respectively; the bearing and pushing mechanism comprises a bearing guide rail and a pushing assembly, the bearing guide rail is provided with a guide groove and an open groove which are matched with the narrow and long workpiece, and the pushing assembly comprises a frame body, a chain wheel rotationally installed on the frame body, two guide sliding grooves, a chain, a pushing piece and a rotary driver for providing power for rotation of the chain wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of bending equipment, in particular to a bending auxiliary device for narrow and long sheet metal workpieces. Background Technique

[0002] As is well known, brackets, support frames, holding poles, etc. are all relatively common sheet metal products, usually composed of multiple bent narrow and long sheet metal plates, shaped like a "U"; the narrow and long sheet metal plate is a workpiece with a large aspect ratio, and it is easy to displace during the bending positioning process, resulting in bending accuracy deviation; therefore, it is necessary to assist in limiting the narrow and long sheet metal workpiece.

[0003] For example, the Chinese utility model patent CN216262828U discloses a workpiece bending auxiliary positioning structure. The auxiliary positioning module includes a positioning top plate and a locking component, and the locking component is locked and connected with the bending component, which solves the problems of difficult positioning and low accuracy of narrow and long workpieces.

[0004] However, it is suitable for right-angle bending of narrow and long workpieces. When performing arc bending of narrow and long workpieces with a greater length, the tail of the narrow and long workpiece will naturally droop under the action of gravity, resulting in swing displacement of the workpiece during the bending process, affecting the bending processing accuracy of the workpiece, and the narrow and long workpiece needs to be manually assisted to feed, which is rather laborious. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a bending auxiliary device for narrow and long sheet metal workpieces, which effectively limits and supports the tail of the narrow and long workpiece, assists in pushing the narrow and long workpiece, improves the bending treatment effect and efficiency of the narrow and long workpiece, and reduces the amount of manual operation.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a bending auxiliary device for narrow and long sheet metal workpieces, including a bending mechanism and a supporting and pushing mechanism. The bending mechanism includes a frame, a fixed frame fixedly installed on the frame, a rotating frame hinged to the frame, a first roller shaft rotatably installed on the frame, and a driving cylinder providing power for the rotation of the rotating frame; a second roller shaft and a third roller shaft are respectively rotatably installed on the fixed frame and the rotating frame.

[0007] The supporting and pushing mechanism includes a supporting guide rail and a pushing component, and the supporting guide rail is provided with a guide groove and an opening groove that fit the narrow and long workpiece.

[0008] The pushing assembly includes a frame, a sprocket rotatably mounted on the frame, two guide slides, a chain, a pushing member and a rotary driver that provides power for the rotation of the sprocket, one group of guide slides being installed in an open groove, and the other guide slide being located at the bottom of the frame and the frame, the chain being sleeved on the sprocket, the two ends of the chain being respectively extended into the two guide slides, and the pushing member being located at the end of the chain in the upper group of guide slides.

[0009] Furthermore, one end of the driving cylinder is hinged to the frame, and the output end of the driving cylinder is hinged to the rotating frame; the first roller is located above the middle of the second roller and the third roller; the top of a group of guide grooves at the top is flush with the inner bottom wall of the guide groove.

[0010] Preferably, two blocking vertical plates are installed on the upper part of the supporting guide rail, the spacing between the two blocking vertical plates is equal to the width of the narrow and long workpiece, and the height of the pushing member extending from the top of the guide slide is the same as the thickness of the narrow and long workpiece.

[0011] Preferably, a clearance opening is provided in the middle of the blocking vertical plate.

[0012] Preferably, the guide groove of the supporting guide rail is provided with a notch portion, and a flattening embossing device is installed in the notch portion.

[0013] Preferably, the flattening embossing device includes a lifting seat mounted on a frame for sliding up and down and a lifting drive fixedly mounted on the frame and providing power for the lifting seat to slide up and down. A plurality of groups of evenly distributed triangular pyramidal rods are provided at the bottom of the lifting seat; further, the triangular pyramidal rods are perpendicular to the feeding direction of the narrow and long workpiece.

[0014] Preferably, a jaw mold is fixedly mounted on one end of the first roller, and the second roller and the third roller both extend toward the jaw mold side of the frame; a rotating drive component for driving the first roller to rotate is fixedly mounted on the other end of the first roller.

[0015] The rotary driving member may be a driving motor or other equivalent member that can drive the first roller to rotate.

[0016] Preferably, the jaw mold includes a cylinder and an open slot provided on the cylinder, and an arc portion connected to the open slot is provided at the opening of the open slot; further, the bending radii at the two arc portions are different.

[0017] Preferably, the rotary drive member is a hand-cranked wheel.

[0018] Preferably, the jaw mold is detachably mounted on the first roller shaft by bolts.

[0019] Preferably, the supporting guide rail is detachably connected to the frame and the corresponding guide slot by bolts.

[0020] Compared with the prior art, the utility model provides a bending auxiliary device for narrow and long sheet metal workpieces, which has the following beneficial effects:

[0021] For the bending auxiliary device for narrow and long sheet metal workpieces, by placing the narrow and long workpiece in the supporting guide rail, the narrow and long workpiece is located at the top of the upper guiding chute. Start the rotary driver, and the sprocket drives the chain to move in the guiding chute. The pushing member pushes the narrow and long workpiece into the bending mechanism through the guiding groove. The narrow and long workpiece passes through the bottom of the first roller shaft and the second roller shaft and passes through the top of the third roller shaft. Start the driving cylinder to make the rotating frame rotate. The narrow and long workpiece is gradually bent into an arc shape during the pushing process, and the tail of the narrow and long workpiece is limited by the guiding groove and the pushing member, effectively preventing the tail of the narrow and long workpiece from shifting during the bending processing, and assisting in pushing the narrow and long workpiece, improving the bending processing effect and efficiency of the narrow and long workpiece, and reducing the amount of manual operation. Description of the Drawings

[0022] Figure 1 is a three-dimensional structural schematic diagram of the narrow and long workpiece bent into an arc shape of the utility model.

[0023] Figure 2 is a three-dimensional structural schematic diagram of the utility model.

[0024] Figure 3 is a top view plane structural schematic diagram of the utility model.

[0025] Figure 4 is of the utility model Figure 3 Cross-sectional structural schematic diagram at A-A in

[0026] Figure 5 is of the utility model Figure 4 Local enlarged structural schematic diagram at A in

[0027] Reference numerals in the drawings: 1, frame; 2, fixed frame; 3, rotating frame; 4, first roller shaft; 5, driving cylinder; 6, second roller shaft; 7, third roller shaft; 8, supporting guide rail; 9, guiding groove; 10, opening groove; 11, frame body; 12, sprocket; 13, guiding chute; 14, chain; 15, pushing member; 16, rotary driver; 17, blocking vertical plate; 18, relief opening; 19, lifting seat; 20, lifting driver; 21, triangular cone rod; 22, rotary driving member; 23, cylinder; 24, opening slot; 25, arc portion. Detailed Embodiments

[0028] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solution in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] Please refer to Figures 1-3 , a bending auxiliary device for narrow and long sheet metal workpieces, which includes a bending mechanism and a supporting and pushing mechanism. The bending mechanism includes a frame 1, a fixed frame 2 fixedly installed on the frame 1, a rotating frame 3 hingedly installed on the frame 1, a first roller shaft 4 rotatably installed on the frame 1, and a driving cylinder 5 that provides power for the rotation of the rotating frame 3; a second roller shaft 6 and a third roller shaft 7 are respectively rotatably installed on the fixed frame 2 and the rotating frame 3. One end of the driving cylinder 5 is hinged to the frame 1, and the output end of the driving cylinder 5 is hinged to the rotating frame 3.

[0032] The supporting and pushing mechanism in this embodiment includes a supporting guide rail 8 and a pushing component. The supporting guide rail 8 is provided with a guide groove 9 and an opening groove 10 that fit the narrow and long workpiece. The pushing component includes a frame body 11, a sprocket 12 rotatably installed on the frame body 11, two guiding chutes 13, a chain 14, a pushing member 15, and a rotating driver 16 that provides power for the rotation of the sprocket 12. One set of guiding chutes 13 is installed in the opening groove 10, and the other guiding chute 13 is located at the bottom of the frame 1 and the frame body 11. The chain 14 is sleeved on the sprocket 12, and both ends of the chain 14 extend into the two guiding chutes 13 respectively. The pushing member 15 is located at the end of the chain 14 in the upper set of guiding chutes 13.

[0033] Specifically, the supporting guide rail 8 is detachably connected to the frame 1 and the corresponding guiding chute 13 by bolts; by replacing the supporting guide rail 8 with different sizes, the arc bending processing requirements of narrow and long workpieces with multiple widths and thicknesses can be met.

[0034] The first roller shaft 4 is located above the middle of the second roller shaft 6 and the third roller shaft 7; the top of the upper set of guiding chutes 13 is flush with the inner bottom wall of the guide groove 9; the chain 14 fits with the guiding chute 13, and the guiding chute 13 can guide and limit the traveling track of the chain 14.

[0035] Two blocking vertical plates 17 are installed on the upper part of the supporting guide rail 8. The distance between the two blocking vertical plates 17 is equal to the width of the narrow and long workpiece, and the height at which the pushing member 15 extends from the top of the guiding chute 13 is the same as the thickness of the narrow and long workpiece. A relief opening 18 is provided in the middle of the blocking vertical plate 17.

[0036] For the bending auxiliary device for narrow and long sheet metal workpieces provided in this embodiment, a plurality of narrow and long workpieces are stacked between the two blocking vertical plates 17. The bottom group of narrow and long workpieces is placed above the guiding chute 13. By starting the rotary driver 16, the sprocket 12 drives the chain 14 to move in the guiding chute 13, and the pushing member 15 only pushes the bottom group of narrow and long workpieces to slide towards the guide groove 9. The multiple stacked narrow and long workpieces can press and limit the bottom group of narrow and long workpieces being pushed and moved, so as to prevent the narrow and long workpieces in the moving state from being convexed and warped upwards during the pushing process, ensure the accurate and smooth feeding of the narrow and long workpieces, and improve the feeding convenience of the narrow and long workpieces. The relief opening 18 can facilitate the operator to place the narrow and long workpieces between the two blocking vertical plates 17, further improving the operation convenience.

[0037] As Figures 4-5 shown, a notch portion is provided at the guide groove 9 of the supporting guide rail 8, and a flattening and embossing device is installed at the notch portion. Specifically, the flattening and embossing device includes a lifting seat 19 slidably installed up and down on the frame 1 and a lifting driver 20 fixedly installed on the frame 1 to provide power for the up and down sliding of the lifting seat 19. A plurality of uniformly distributed triangular pyramid rods 21 are provided at the bottom of the lifting seat 19; further, the triangular pyramid rods 21 are perpendicular to the feeding direction of the narrow and long workpiece; the lifting driver 20 can be a hydraulic cylinder or a pneumatic cylinder.

[0038] For the bending auxiliary device for narrow and long sheet metal workpieces provided in this embodiment, when the narrow and long workpiece passes under the lifting seat 19, the lifting driver 20 drives the lifting seat 19 to move up and down. The lifting seat 19 can flatten the small bends on the narrow and long workpiece, and the triangular pyramid rods 21 can form a plurality of uniformly distributed conical longitudinal lines on the upper surface of the narrow and long workpiece. Under the action of the conical longitudinal lines, the friction between the narrow and long workpiece and the first roller 4 and the second roller 6 can be increased. At the same time, the conical longitudinal lines can compensate for the bending amount of the narrow and long workpiece, so that the narrow and long workpiece can be bent into an arc shape more labor-savingly. The formed arc-shaped workpiece is not easy to over-reset after leaving the bending mechanism under the action of the conical longitudinal lines.

[0039] A jaw die is fixedly installed at one end of the first roller 4, and the second roller 6 and the third roller 7 both extend towards the side of the jaw die on the frame 1; a rotary driving member 22 for driving the first roller 4 to rotate is fixedly installed at the other end of the first roller 4. The jaw die is detachably installed on the first roller 4 through bolts; different jaw dies can be replaced according to requirements to meet the requirements of the end bending mechanism for narrow and long workpieces of different sizes.

[0040] The rotation driving member 22 may be a driving motor or other equivalent members capable of driving the first roller 4 to rotate. In other embodiments, the rotation driving member 22 is a handwheel.

[0041] The jaw die includes a cylinder 23 and an open slot 24 provided on the cylinder 23. An arc portion 25 connected to the open slot 24 is provided at the opening of the open slot 24; further, the bending radii at the two arc portions 25 are different.

[0042] The bending auxiliary device for narrow and long sheet metal workpieces provided in this embodiment can insert the end of the narrow and long workpiece into the open slot 24 on the jaw die. The narrow and long workpiece is located below the second roller 6 or the third roller 7. By rotating the handwheel, the handwheel drives the first roller 4 and the cylinder 23 to rotate, and bends the end of the narrow and long workpiece. According to the bending processing requirements, different-sized arc portions 25 can be selected to bend the narrow and long workpiece, so that different-sized bending angles are formed at the bending part of the narrow and long workpiece, further improving the applicability of the device; the handwheel can adaptively adjust the rotation speed of the first roller 4 to ensure the bending accuracy of the narrow and long workpiece.

[0043] The using process of the bending auxiliary device for narrow and long sheet metal workpieces provided by the present utility model is as follows: Place the narrow and long workpiece in the supporting guide rail 8. The narrow and long workpiece is located at the top of the upper guiding chute 13. Start the rotation driver 16, and the sprocket 12 drives the chain 14 to move in the guiding chute 13. The pushing member 15 pushes the narrow and long workpiece through the guide groove 9 into the bending mechanism. The narrow and long workpiece passes through the bottom of the first roller 4 and the second roller 6 and passes through the top of the third roller 7. The lifting drive cylinder 5 drives the lifting seat 19 to move up and down to perform auxiliary straightening and conical longitudinal pattern pressing on the passing narrow and long workpiece. Start the drive cylinder 5 to rotate the rotating frame 3, and at the same time rotate the handwheel to rotate the first roller 4. The narrow and long workpiece is gradually bent into an arc shape during the pushing process. The drive cylinder 5 drives the rotating frame 3 to reset, and then the formed arc-shaped workpiece can be unloaded.

[0044] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

Claims

1. A bending assistance device for narrow and long sheet metal workpieces, characterized in that, The invention comprises a bending mechanism and a supporting and pushing mechanism, wherein the bending mechanism comprises a frame (1), a fixed frame (2) fixedly mounted on the frame (1), a rotating frame (3) hingedly mounted on the frame (1), a first roller (4) rotatably mounted on the frame (1), and a driving cylinder (5) providing power for the rotating frame (3) to rotate; a second roller (6) and a third roller (7) are rotatably mounted on the fixed frame (2) and the rotating frame (3), respectively; The supporting and pushing mechanism comprises a supporting guide rail (8) and a pushing assembly, wherein the supporting guide rail (8) is provided with a guide groove (9) and an opening groove (10) that fits the narrow and long workpiece; The pushing assembly includes a frame (11), a sprocket (12) rotatably mounted on the frame (11), two guide slots (13), a chain (14), a pushing member (15) and a rotary driver (16) for providing power for the rotation of the sprocket (12), wherein one group of guide slots (13) is mounted in the opening slot (10), and the other guide slot (13) is located at the bottom of the frame (1) and the frame (11), the chain (14) is sleeved on the sprocket (12), and the two ends of the chain (14) are respectively extended into the two guide slots (13), and the pushing member (15) is located at the end of the chain (14) in the upper group of guide slots (13).

2. The bending assistance device for narrow and long sheet metal workpieces according to claim 1, characterized in that, Two blocking uprights (17) are installed on the upper portion of the supporting guide rail (8), and the distance between the two blocking uprights (17) is equal to the width of the narrow and long workpiece. The height of the pushing member (15) extending from the top of the guide chute (13) is the same as the thickness of the narrow and long workpiece.

3. The bending assistance device for narrow and long sheet metal workpieces according to claim 2, wherein A clearance opening (18) is provided in the middle of the blocking vertical plate (17).

4. The bending auxiliary device for narrow and long sheet metal workpieces according to claim 1 or 2, characterized in that, A notch portion is provided at the guide groove (9) of the supporting guide rail (8), and a flattening embossing device is installed at the notch portion.

5. The bending assistance device for narrow and long sheet metal workpieces according to claim 4, wherein, The flattening embossing device comprises a lifting seat (19) mounted on a frame (1) for sliding up and down, and a lifting driver (20) fixedly mounted on the frame (1) and providing power for the lifting seat (19) to slide up and down. A plurality of groups of evenly distributed triangular cone rods (21) are provided at the bottom of the lifting seat (19).

6. The bending assistance device for narrow and long sheet metal workpieces according to claim 1, wherein A jaw die is fixedly mounted on one end of the first roller (4), and the second roller (6) and the third roller (7) both extend toward the jaw die side of the frame (1); and a rotating drive member (22) for driving the first roller (4) to rotate is fixedly mounted on the other end of the first roller (4).

7. The bending assistance device for narrow and long sheet metal workpieces according to claim 6, wherein, The jaw mold comprises a cylinder (23) and an opening slot (24) provided on the cylinder (23), and an arc portion (25) connected to the opening slot (24) is provided at the opening of the opening slot (24).

8. The bending assistance device for narrow and long sheet metal workpieces according to claim 6 or 7, characterized in that, The jaw die is detachably mounted on the first roller (4) via bolts.

9. The bending auxiliary device for narrow and long sheet metal workpieces according to claim 1, characterized in that, The supporting guide rail (8) is detachably connected to the frame (1) and the corresponding guide slot (13) via bolts.

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