A bending center feeding and clamping mechanism

Abstract

This utility model discloses a bending center feeding and pressing mechanism, including: a pressing arm assembly, a pressing assembly, and a feeding drive assembly. The pressing arm assembly includes a swing drive structure, an upper pressing arm, and a lower pressing arm. The rear ends of the upper pressing arm and the lower pressing arm are hinged to each other by a hinge. The swing drive structure is used to drive the upper pressing arm to swing up and down relative to the lower pressing arm around the hinge. The pressing assembly includes an upper pressing block rotatably mounted on the front end of the upper pressing arm, a lower pressing block rotatably mounted on the front end of the lower pressing arm, and a rotation drive structure for driving at least one of the upper and lower pressing blocks to rotate. The upper and lower pressing blocks are arranged vertically opposite each other. The feeding drive assembly is used to drive the pressing arm assembly to reciprocate in the front-back direction. In this utility model, the rear ends of the upper pressing arm and the lower pressing arm are hinged to each other, thereby utilizing the overall gravity of the upper pressing arm to press the sheet metal, thereby increasing the pressing force between the upper and lower pressing blocks on the sheet metal and achieving a better pressing effect.

Description

Technical Field

[0001] This utility model relates to the field of bending equipment technology, and in particular to a bending center feeding and pressing mechanism. Background Technology

[0002] A bending center is a machine used in the manufacturing and processing industries to bend or shape sheet metal into specific forms. Its working principle typically involves clamping and positioning the sheet metal, then using a mechanical or hydraulic system to bend the sheet metal to a specific angle along a predetermined axis.

[0003] Modern bending centers are equipped with bending feeding mechanisms. During feeding, the bending feeding mechanism clamps the workpiece and then transports it to achieve automatic feeding. Existing bending feeding mechanisms generally use the clamping force of a clamping drive structure at the front end of the pressure arm to clamp the workpiece. For heavy workpieces, the clamping force of the clamping drive structure alone requires a very large clamping drive structure. Although some on the market now use part of the weight of the pressure arm to increase the clamping force on the workpiece, the effect is not obvious, and a clamping drive component with a larger force is still required. Furthermore, for wide plates, there is only one support point for the plate, which makes the plate prone to sagging and bending, affecting the feeding accuracy. Utility Model Content The purpose of this utility model is to provide a bending center feeding and pressing mechanism to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: This utility model provides a bending center feeding and clamping mechanism, including: The pressure arm assembly includes a swing drive structure, an upper pressure arm and a lower pressure arm arranged vertically, wherein the rear ends of the upper pressure arm and the rear ends of the lower pressure arm are hinged to each other by a hinge, and the swing drive structure is used to drive the upper pressure arm to swing up and down relative to the lower pressure arm around the hinge. The clamping assembly includes an upper pressing block rotatably mounted on the front end of the upper pressing arm, a lower pressing block rotatably mounted on the front end of the lower pressing arm, and a rotary drive structure for driving at least one of the upper pressing block and the lower pressing block to rotate, wherein the upper pressing block and the lower pressing block are arranged vertically opposite each other. A feeding drive assembly is used to drive the pressure arm assembly to reciprocate in the front-back direction.

[0005] The beneficial effects of the bending center feeding and clamping mechanism of this utility model are: In use, the swing drive structure drives the upper pressure arm to swing up and down relative to the lower pressure arm around the hinge, so as to move the upper pressure block closer to and away from the lower pressure block in the vertical direction, thereby achieving the pressing and releasing of the plate. After the upper and lower pressure blocks press the plate, the rotation drive structure drives at least one of the upper and lower pressure blocks to rotate, thereby rotating the plate and controlling the bending edge of the plate to face the bending center in the front. Then, the feeding drive assembly drives the pressure arm assembly to move back and forth in the front and back direction to realize the feeding and discharging of the bent plate. In this utility model, the rear end of the upper pressure arm and the rear end of the lower pressure arm are hinged to each other, so that the overall gravity of the upper pressure arm can be used to press the plate, thereby improving the pressing force between the upper and lower pressure blocks on the plate and the pressing effect of the plate is better.

[0006] As a further improvement to the above technical solution, on the side projection plane, the upper pressure arm has an L-shaped structure. The upper pressure arm includes an upper forearm extending in the front-rear direction and an upper rear arm vertically connected to the rear end of the upper forearm. The hinge is installed at the front of the lower end of the upper rear arm. The swing drive structure includes a transmission arm hinged to the rear part of the lower end of the upper rear arm, an eccentric wheel sleeved on the end of the transmission arm away from the upper rear arm, and a rotary drive component that drives the eccentric wheel to rotate.

[0007] As a further improvement to the above technical solution, the rear end of the lower pressure arm is provided with a mounting base, and the eccentric wheel is rotatably connected to the mounting base.

[0008] As a further improvement to the above technical solution, a material pushing and positioning component is also included. The material pushing and positioning component includes a positioning block disposed on the top side of the lower pressure arm and a material pushing drive structure for driving the positioning block to reciprocate in the front-back direction. The front end of the positioning block is provided with an L-shaped material pushing and positioning slot. The material pushing and positioning slot is provided with a support surface and a material pushing surface arranged perpendicularly to each other. The support surface is used to support the bottom surface of the support plate, and the material pushing surface is used to abut against the rear side edge of the plate.

[0009] As a further improvement to the above technical solution, the rotary drive structure is installed at the front end of the upper pressure arm, and the rotary drive structure is connected to the upper pressure block in a transmission manner.

[0010] As a further improvement to the above technical solution, the upper pressure block is rotatably connected to the upper pressure arm via a first rotating shaft, and the first rotating shaft and the upper pressure block are connected by a ball joint.

[0011] As a further improvement to the above technical solution, the lower pressure block is rotatably connected to the upper pressure arm via a second rotating shaft.

[0012] As a further improvement to the above technical solution, a second locking structure is provided between the lower pressure block and the lower pressure arm, the second locking structure being used to lock the rotation angle of the lower pressure block; A first locking structure is provided between the upper pressure block and the upper pressure arm, and the first locking structure is used to lock the rotation angle of the upper pressure block.

[0013] As a further improvement to the above technical solution, the feeding drive assembly includes a base and a feeding drive structure. The lower pressure arm is slidably mounted on the base, and the feeding drive structure is connected to the lower pressure arm in a transmission manner. The feeding drive structure is used to drive the lower pressure arm to reciprocate in the front-back direction.

[0014] In addition, this utility model also proposes a bending center, which includes the bending center feeding and pressing mechanism.

[0015] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a side view of an embodiment of the bending center feeding and pressing mechanism provided by this utility model; Figure 2 This is a schematic diagram of an embodiment of the bending center feeding and pressing mechanism provided by this utility model; Icon labels: Pressure arm assembly 100; swing drive structure 110; transmission arm 111; eccentric wheel 112; rotary drive component 113; upper pressure arm 120; upper front arm 121; upper rear arm 122; lower pressure arm 130; mounting base 131; slide block 132; hinge 140; Clamping assembly 200; upper clamping block 210; first rotating shaft 211; lower clamping block 220; second rotating shaft 221; rotating drive structure 230; Feeding drive assembly 300; base 310; slide rail 311; feeding drive structure 320; 400mm sheet metal; Material pushing and positioning component 500; positioning block 510; material pushing drive structure 520; material pushing and positioning slot 511; support surface 5111; material pushing surface 5112. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0022] The current bending feeding mechanism does not have a good clamping effect on the sheet metal 400, and requires a clamping drive component with a large force. Furthermore, for the wide sheet metal 400, there is only one support point for the sheet metal 400, which makes the sheet metal 400 prone to sagging and bending, affecting the feeding accuracy. Therefore, this utility model proposes a bending center feeding and clamping mechanism to solve the above problems.

[0023] Reference Figures 1-2 The bending center feeding and pressing mechanism of this utility model is implemented in the following embodiment: like Figure 1 and Figure 2 As shown, the bending center feeding and pressing mechanism of this utility model includes a pressing arm assembly 100, a pressing assembly 200, and a feeding drive assembly 300.

[0024] like Figure 1As shown, the pressure arm assembly 100 of this utility model includes a swing drive structure 110, an upper pressure arm 120 and a lower pressure arm 130 arranged vertically. The rear ends of the upper pressure arm 120 and the rear ends of the lower pressure arm 130 are hinged to each other by a hinge member 140. The hinge member 140 extends horizontally and is a shaft member, so that the upper pressure arm 120 as a whole can swing up and down relative to the lower pressure arm 130 around the hinge member 140.

[0025] In this embodiment, the hinge 140 is disposed between the rear end of the upper pressure arm 120 and the rear end of the lower pressure arm 130. This provides a longer space between the upper pressure arm 120 and the lower pressure arm 130 to accommodate a larger plate 400, and also allows the overall weight of the upper pressure arm 120 to act on the plate 400.

[0026] In this embodiment, the swing drive structure 110 is used to drive the upper pressure arm 120 to swing up and down relative to the lower pressure arm 130 around the hinge 140.

[0027] The clamping assembly 200 of this utility model includes an upper pressing block 210 rotatably mounted on the front end of the upper pressing arm 120, a lower pressing block 220 rotatably mounted on the front end of the lower pressing arm 130, and a rotary drive structure 230 for driving at least one of the upper pressing block 210 and the lower pressing block 220 to rotate. The upper pressing block 210 and the lower pressing block 220 are arranged vertically opposite each other to abut against the top and bottom surfaces of the plate 400 to clamp the plate 400.

[0028] In this embodiment, the rotation axes of the upper pressure block 210 and the lower pressure block 220 extend in the vertical direction. In this embodiment, the gravity of the upper pressure arm 120 is transferred to the upper pressure block 210 to press the plate 400 onto the lower pressure block 220. When the rotation drive structure 230 drives at least one of the upper pressure block 210 and the lower pressure block 220 to rotate, the plate 400, the upper pressure block 210 and the lower pressure block 220 can be driven to rotate together around the vertical axis, controlling the bending edge of the plate 400 to face the bending center on the front side.

[0029] In this embodiment, the feeding drive assembly 300 is used to drive the pressure arm assembly 100 to reciprocate in the front-back direction. In use, the swing drive structure 110 drives the upper pressure arm 120 to swing up and down relative to the lower pressure arm 130 around the hinge 140, so as to drive the upper pressure block 210 to move closer to and further away from the lower pressure block 220 in the up-down direction, so as to achieve the pressing and releasing of the plate 400. After the upper pressure block 210 and the lower pressure block 220 press the plate 400, the rotation drive structure 230 drives at least one of the upper pressure block 210 and the lower pressure block 220 to rotate, so as to drive the plate 400 to rotate and control the bending edge of the plate 400 to face the bending center on the front side. Then, the feeding drive assembly 300 drives the pressure arm assembly 100 to reciprocate in the front-back direction to realize the feeding and discharging of the bent plate 400.

[0030] In this invention, the rear ends of the upper pressure arm 120 and the lower pressure arm 130 are hinged to each other, so that the overall weight of the upper pressure arm 120 can be used to press the plate 400, thereby increasing the pressing force between the upper pressure block 210 and the lower pressure block 220 on the plate 400 and achieving a better pressing effect on the plate 400.

[0031] Furthermore, on the side view projection plane, the upper pressure arm 120 of this embodiment has an L-shaped structure. Specifically, the upper pressure arm 120 includes an upper front arm 121 extending in the front-rear direction and an upper rear arm 122 vertically connected to the rear end of the upper front arm 121. The hinge 140 is installed on the front part of the lower end of the upper rear arm 122.

[0032] The swing drive structure 110 of this embodiment includes a transmission arm 111 hinged to the rear part of the lower end of the upper rear arm 122, an eccentric wheel 112 sleeved on the end of the transmission arm 111 away from the upper rear arm 122, and a rotation drive component 113 that drives the eccentric wheel 112 to rotate.

[0033] In this embodiment, the lower pressure arm 130 is provided with a mounting base 131 at its rear end. The eccentric wheel 112 is rotatably connected to the mounting base 131. In this embodiment, the eccentric wheel 112 is driven to rotate eccentrically by a rotation drive component 113, and the upper pressure arm 120 is driven to swing around the hinge 140 by a transmission arm 111. In this embodiment, the rotation drive component 113 is a servo motor.

[0034] Furthermore, the bending center feeding and pressing mechanism of this embodiment also includes a pushing and positioning component 500, wherein the pushing and positioning component 500 includes a positioning block 510 disposed on the top side of the lower pressing arm 130 and a pushing drive structure 520 for driving the positioning block 510 to reciprocate in the front-back direction. In this embodiment, the positioning block 510 is used to push the rear side of the plate 400 to position the plate 400 in the front-back direction.

[0035] When the plate 400 is positioned between the upper pressure block 210 and the lower pressure block 220 and has not yet been clamped, the push drive structure 520 can drive the positioning block 510 to move forward. The positioning block 510 abuts against the rear edge of the plate 400 to push the plate 400 forward a set distance. At the same time, the posture of the plate 400 is adjusted so that the rear edge of the plate 400 extends to the left and right. Then the upper pressure block 210 and the lower pressure block 220 clamp the plate 400.

[0036] In some other embodiments, the front end of the positioning block 510 is provided with an L-shaped pusher positioning slot 511. The pusher positioning slot 511 is provided with a support surface 5111 and a pusher surface 5112 arranged perpendicularly to each other. The support surface 5111 is used to support the bottom surface of the support plate 400, and the pusher surface 5112 is used to abut against the rear side edge of the plate 400. In this embodiment, the pusher surface 5112 is used to push the plate 400 forward to achieve positioning in the front-back direction. At the same time, the support surface 5111 is used to support the plate 400 to prevent the rear edge of the plate 400 from drooping and bending.

[0037] The pusher drive structure 520 in this embodiment uses a linear motor, which is installed on the top of the lower pressure arm 130.

[0038] In this embodiment, the rotary drive structure 230 is installed at the front end of the upper pressure arm 120, and the rotary drive structure 230 is connected to the upper pressure block 210 in a transmission manner. In this embodiment, the rotary drive structure 230 drives the upper pressure block 210 to rotate. When the lower pressure block 220 is pressing the bent workpiece, it will rotate with the upper pressure block 210. In this way, the gravity of the rotary drive structure 230 is also used to press the plate 400.

[0039] Specifically, in this embodiment, the upper pressure block 210 is rotatably connected to the upper pressure arm 120 via the first rotating shaft 211. For thicker bending workpieces, since the lower pressure arm 130 and the upper pressure arm 120 swing relative to each other to clamp the plate 400, it is difficult for the upper pressure block 210 and the lower pressure block 220 to maintain parallelism in the vertical direction when clamping. The upper pressure block 210 will have a certain tilt angle relative to the horizontal plane, resulting in poor clamping effect on the plate 400. Therefore, in this embodiment, the lower end of the first rotating shaft 211 is connected to the upper pressure block 210 via a ball joint to eliminate the tilt angle. No matter how thick the bending workpiece is, the bottom surface of the upper pressure block 210 can fit against the top surface of the plate 400. At this time, the upper pressure block 210 can swing freely in three-dimensional space around the ball joint.

[0040] The rotary drive structure 230 can be a motor plus pulley structure or a motor plus gear structure.

[0041] In this embodiment, the lower pressure block 220 is rotatably connected to the upper pressure arm 120 via the second rotating shaft 221.

[0042] Furthermore, in some other embodiments, a second locking structure (not shown) is provided between the lower pressing block 220 and the lower pressing arm 130, the second locking structure being used to lock the rotation angle of the lower pressing block 220; while a first locking structure (not shown) is provided between the upper pressing block 210 and the upper pressing arm 120, the first locking structure being used to lock the rotation angle of the upper pressing block 210.

[0043] When performing rotational bending on a workpiece, inaccurate positioning can easily occur. In this embodiment, a first locking structure and a second locking structure are provided to lock the upper pressure block 210 and the lower pressure block 220 respectively, so as to prevent the sheet material 400 from shaking during feeding and affecting the bending accuracy.

[0044] The first locking structure and the second locking structure can be in the form of locking gears and locking blocks. The first rotating shaft 211 and the second rotating shaft 221 are respectively fitted with locking gears, and locking is achieved by the locking block engaging with the locking gears.

[0045] The feeding drive assembly 300 in this embodiment includes a base 310 and a feeding drive structure 320. The lower pressure arm 130 is slidably mounted on the base 310. The feeding drive structure 320 is connected to the lower pressure arm 130 in a transmission manner. The feeding drive structure 320 is used to drive the lower pressure arm 130 to reciprocate in the front-back direction.

[0046] In this embodiment, a slide rail 311 extending in the front and back is provided on the top surface of the base 310. The lower pressure arm 130 is slidably connected to the slide rail 311 through the slide seat 132. In this embodiment, the sliding cooperation between the slide rail 311 and the slide seat 132 is used to improve the stability of the lower pressure arm 130 sliding back and forth. The front end of the base 310 is fixedly connected to the bending center.

[0047] The feeding drive structure 320 can be driven by a lead screw and nut, a rack and pinion, or a pulley.

[0048] In addition, this utility model also proposes a bending center, which includes the bending center feeding and pressing mechanism.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A bending center feeding and clamping mechanism, characterized in that, include: The pressure arm assembly (100) includes a swing drive structure (110), an upper pressure arm (120) and a lower pressure arm (130) arranged vertically. The rear ends of the upper pressure arm (120) and the lower pressure arm (130) are hinged to each other by a hinge (140). The swing drive structure (110) is used to drive the upper pressure arm (120) to swing up and down relative to the lower pressure arm (130) around the hinge (140). The clamping assembly (200) includes an upper pressure block (210) rotatably mounted on the front end of the upper pressure arm (120), a lower pressure block (220) rotatably mounted on the front end of the lower pressure arm (130), and a rotary drive structure (230) for driving at least one of the upper pressure block (210) and the lower pressure block (220) to rotate, wherein the upper pressure block (210) and the lower pressure block (220) are arranged vertically opposite each other; The feeding drive assembly (300) is used to drive the pressure arm assembly (100) to reciprocate in the front-back direction.

2. The bending center feeding and pressing mechanism according to claim 1, characterized in that: On the side projection plane, the upper pressure arm (120) has an L-shaped structure. The upper pressure arm (120) includes an upper front arm (121) extending in the front-rear direction and an upper rear arm (122) vertically connected to the rear end of the upper front arm (121). The hinge (140) is installed at the front of the lower end of the upper rear arm (122). The swing drive structure (110) includes a transmission arm (111) hinged to the rear part of the lower end of the upper rear arm (122), an eccentric wheel (112) sleeved on the end of the transmission arm (111) away from the upper rear arm (122), and a rotary drive component (113) that drives the eccentric wheel (112) to rotate.

3. The bending center feeding and pressing mechanism according to claim 2, characterized in that: The rear end of the lower pressure arm (130) is provided with a mounting base (131), and the eccentric wheel (112) is rotatably connected to the mounting base (131).

4. The bending center feeding and pressing mechanism according to claim 1, characterized in that: It also includes a pusher positioning component (500), which includes a positioning block (510) located on the top side of the lower pressure arm (130) and a pusher driving structure (520) for driving the positioning block (510) to move back and forth in the front and rear directions. The front end of the positioning block (510) is provided with an L-shaped pusher positioning slot (511). The pusher positioning slot (511) is provided with a support surface (5111) and a pusher surface (5112) arranged perpendicularly to each other. The support surface (5111) is used to support the bottom surface of the support plate (400), and the pusher surface (5112) is used to abut against the rear side edge of the plate (400).

5. The bending center feeding and pressing mechanism according to claim 1, characterized in that: The rotary drive structure (230) is installed at the front end of the upper pressure arm (120), and the rotary drive structure (230) is connected to the upper pressure block (210) in a transmission manner.

6. The bending center feeding and pressing mechanism according to claim 5, characterized in that: The upper pressure block (210) is rotatably connected to the upper pressure arm (120) via a first rotating shaft (211), and the first rotating shaft (211) and the upper pressure block (210) are connected by a ball joint.

7. The bending center feeding and clamping mechanism according to claim 6, characterized in that: The lower pressure block (220) is rotatably connected to the upper pressure arm (120) via a second rotating shaft (221).

8. The bending center feeding and pressing mechanism according to claim 1, characterized in that: A second locking structure is provided between the lower pressure block (220) and the lower pressure arm (130), the second locking structure being used to lock the rotation angle of the lower pressure block (220); A first locking structure is provided between the upper pressure block (210) and the upper pressure arm (120), the first locking structure being used to lock the rotation angle of the upper pressure block (210).

9. The bending center feeding and clamping mechanism according to claim 1, characterized in that: The feeding drive assembly (300) includes a base (310) and a feeding drive structure (320). The lower pressure arm (130) is slidably mounted on the base (310). The feeding drive structure (320) is connected to the lower pressure arm (130) in a transmission manner. The feeding drive structure (320) is used to drive the lower pressure arm (130) to reciprocate in the front-back direction.

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