Bending machine and bending center

Abstract

The present invention relates to the technical field of bending equipment, and specifically discloses a bending machine and a bending center, including a bending table, a clamping knife, a lifting drive device, a folding device, a support frame and a rotating adsorption device; the rotating adsorption device includes an adsorption member, a two-position switching mechanism, a horizontal distance adjustment mechanism and a rotating drive mechanism, and five adsorption members are arranged side by side on the support frame, and the adsorption member includes a mounting seat assembled on the support frame for left and right movement and a suction cup assembled on the mounting seat for left and right movement with up and down guidance and left and right limit movement, and an elastic member is provided between the mounting seat and the suction cup; the two-position switching mechanism is used to drive the suction cup to move up and down to control the suction cup to remain in the high position or low position of adsorption; the horizontal distance adjustment mechanism is used to drive the mounting seat to drive the suction cup to move left and right; the rotating drive mechanism is used to drive the adsorption member to rotate; and the lifting drive device is used to drive the support frame to move up and down. The bending machine and the bending center have high production flexibility and can effectively improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bending equipment, and in particular to a bending machine and a bending center. Background Art

[0002] Sheet metal is a metal material processing technology, which refers to the process of shearing, stamping, bending, welding and other processes on metal sheets to form metal products with certain shapes, sizes and functions. Sheet metal parts are usually made of thin metal plates (such as iron plates, aluminum plates, stainless steel plates, etc.), and they are widely used in various products and structures.

[0003] Among the commonly used equipment for sheet metal processing, the bending machine is used to bend metal sheets to form specific angles and shapes. It bends the metal sheet on the mold by applying pressure to complete the bending process. In the bending process, in order to achieve the purpose of connection, sealing or shaping, it may be necessary to bend multiple sides of the metal sheet.

[0004] A Chinese patent document with authorization announcement number CN218425255U discloses a bending machine for sheet metal processing. In the bending machine for sheet metal processing, the sheet metal is placed on a workbench, and a vacuum cylinder sucks the sheet metal through a suction cup and rotates it through a rotating axis to facilitate processing at both ends of the sheet metal during processing. It does not need to be removed by manpower for adjustment, and the baffle and push plate are limited to prevent errors caused by position deviation.

[0005] However, the above-mentioned bending machines for sheet metal processing in the prior art can only process one sheet metal part at a time when processing the sheet metal parts, and the production flexibility is low, which will lead to limited production speed and high labor costs. Summary of the invention

[0006] The present invention provides a bending machine and a bending center, aiming to solve the problems of low production flexibility and limited production speed existing in the bending machine used for sheet metal processing in the related art.

[0007] A bending machine of the present invention comprises a bending table and a pressing knife arranged above the bending table, and also comprises a lifting drive device, a folding device and a support frame distributed on the front and rear sides of the bending table, and a rotating adsorption device is arranged on the support frame; the rotating adsorption device comprises an adsorption member, a two-position switching mechanism, a horizontal distance adjustment mechanism and a rotating drive mechanism, and five adsorption members are arranged side by side on the support frame, and each of the adsorption members comprises a mounting seat assembled on the support frame for left and right movement and a suction cup assembled on the mounting seat for left and right movement with up and down guidance and left and right limiting movement, and an elastic member is arranged between the mounting seat and the suction cup to apply elastic force to the suction cup The force causes the suction cup to move down to the low position of adsorption; the two-position switching mechanism is used to drive each suction cup to move up and down to control the suction cup to remain in the high position or the low position of adsorption, thereby adjusting the number of adsorbents in working state; the horizontal distance adjustment mechanism is used to drive the mounting seat to drive the suction cup to move left and right, so as to adjust the distance between the adsorbents in working state to adapt to the size of the sheet metal; the rotary drive mechanism is used to drive the adsorbent to rotate, so that the adsorbent in working state drives the sheet metal to change the bending edge; the lifting drive device is used to drive the support frame to move up and down to drive each adsorbent to move up and down, so that the adsorbent in working state absorbs the sheet metal. The bending machine can adjust the number of adsorbents in working state and the distance between adsorbents in working state according to the needs of batch production and the size of sheet metal, thereby meeting the edge change processing of multiple sheet metal parts and sheet metal parts of different sizes. It has good versatility, is convenient and fast, has high production flexibility, and can effectively improve production efficiency.

[0008] Preferably, the rotation drive mechanism includes a linear drive member, a rack and a gear, the rack is assembled on the support frame for left-right movement, the linear drive member is installed on the support frame, the output end of the linear drive member is connected to the rack to drive the rack to move left-right, each of the suction cups is provided with a gear for driving the suction cup to rotate, and the gear is meshed with the rack. The suction cup is driven to rotate by the rack-and-gear mechanism, with high transmission efficiency, stability and reliability.

[0009] Preferably, the suction cup includes a cup body and a connecting pipe, the mounting seat has a cavity connected to the connecting pipe, the elastic member is installed in the cavity, and the top of the mounting seat is provided with a connecting port connected to an air pump. The air pump is used to suck or introduce gas into the cavity, the connecting pipe and the cup body in sequence through the connecting port to control the inflow and outflow of air inside the suction cup, so that the suction cup can adsorb or release the sheet metal part.

[0010] Preferably, the double-position switching mechanism includes a gear shifting motor, a gear shaft, a switching member and a transmission frame, the gear shaft is rotatably mounted on the support frame, the gear shifting motor is mounted on the support frame, the output end of the gear shifting motor is connected to the gear shaft to drive the gear shaft to rotate, the switching member corresponds to the adsorption member one by one, each of the switching members is movably sleeved on the gear shaft left and right and rotates with the gear shaft, the switching member includes a ring body and a plurality of pushing teeth distributed along the circumference of the ring body, and when the switching member rotates with the gear shaft, the pushing teeth can push the suction cup upward to keep the corresponding suction cup in the high adsorption position; the transmission frame corresponds to the adsorption member one by one, and is guided up and down and movably assembled on the suction cup with left and right limit, and the transmission frame abuts against the left and right end faces of the corresponding switching member to drive the switching member to move left and right.

[0011] Preferably, the gear shaft has five rotation gears for switching the suction cup between the high adsorption position and the low adsorption position. The five rotation gears are evenly distributed along the gear shaft circumferentially, and include the first gear, the second gear, the third gear, the fourth gear, and the fifth gear; the five adsorbents are divided into a middle adsorbent, an edge adsorbent, and a center adsorbent located between the middle adsorbent and the edge adsorbent; the five switching parts are divided into a middle switching part, a center switching part, and an edge switching part corresponding to each adsorbent; the second gear and the fourth gear of the middle switching part are respectively provided with push teeth; the first gear and the fifth gear of the center switching part are respectively provided with push teeth; the first gear, the second gear, and the third gear of the edge switching part are respectively provided with push teeth. By setting five rotation gears, the number of sheet metal parts processed each time can be adjusted, and sheet metal parts of different sizes can be adapted, with good versatility and high flexibility.

[0012] Preferably, the horizontal pitch adjustment mechanism comprises a pitch adjustment motor 1, a pitch adjustment motor 2, a lead screw 1 and a lead screw 2, the lead screw 1 and the lead screw 2 are rotatably mounted on a support frame respectively, the pitch adjustment motor 1 and the pitch adjustment motor 2 are mounted on a support frame respectively, the output end of the pitch adjustment motor 1 is connected to the lead screw 1 to drive the lead screw 1 to rotate, the output end of the pitch adjustment motor 2 is connected to the lead screw 2 to drive the lead screw 2 to rotate, the mounting seat of each edge adsorption member is provided with a threaded hole threadedly connected to the lead screw 1, and the mounting seat of each center adsorption member is provided with a threaded hole threadedly connected to the lead screw 2. Thus, by driving the two edge adsorption members to approach or move away from each other through the lead screw 1, and driving the two center adsorption members to approach or move away from each other through the lead screw 2, the adsorption members in working state at different gears can be evenly distributed along the length direction of the slideway to adapt to the size of the sheet metal parts.

[0013] Preferably, the mounting seat of each edge adsorption member is also provided with a through hole for the second lead screw to slide through.

[0014] Preferably, the support frame has two slideways extending left and right and facing each other front and back, and the front and rear sides of the mounting seat have guide blocks slidably assembled in the slideways.

[0015] Preferably, a plurality of limiting grooves are distributed in the circumferential direction of the gear shaft, and the limiting grooves extend left and right. The inner circumference of the ring body is provided with limiting blocks that slidably cooperate with the limiting grooves.

[0016] The present invention also provides a bending center, including a workbench, a feeding drive device arranged on the workbench and a bending machine. The workbench is provided with multiple positioning columns, and the upper surfaces of the positioning columns are flush with the bending table. The feeding drive device is used to drive the support frame to move forward and backward to drive the adsorption part to move forward and backward, thereby transferring the sheet metal parts on the workbench to the bending table.

[0017] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the bending machine and the bending center of the present invention are provided with five rotation gears, which can adjust the number of adsorption parts in working state and the distance between the adsorption parts in working state according to the needs of batch production and the size of sheet metal parts, thereby meeting the edge change processing of multiple sheet metal parts and sheet metal parts of different sizes, with good versatility, convenience and speed, high production flexibility, and can effectively improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the bending center of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the bending machine of the present invention.

[0020] Figure 3 It is a cross-sectional view of the bending machine of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the bending machine of the present invention in the first gear position.

[0022] Figure 5 It is a structural schematic diagram of the bending machine of the present invention in the second gear position.

[0023] Figure 6 It is a structural schematic diagram of the bending machine of the present invention in the third gear.

[0024] Figure 7 It is a structural schematic diagram of the bending machine of the present invention in the fourth gear.

[0025] Figure 8 It is a structural schematic diagram of the bending machine of the present invention in the fifth gear.

[0026] Reference numerals:

[0027] 10. Workbench; 110. Positioning column; 120. Feeding drive device; 20. Support frame; 210. Lifting drive device; 220. Slideway; 301. Middle suction piece; 302. Middle suction piece; 303. Edge suction piece; 310. Mounting seat; 311. Cavity; 312. Connecting port; 313. Guide block; 320. Suction cup; 321. Plate body; 322. Connecting pipe; 330. Elastic piece; 40. Double-position switching mechanism; 401. Middle switching piece; 402. Center-bias switching member; 403, edge switching member; 411, ring body; 412, push gear; 420, gear adjustment motor; 430, gear shaft; 440, transmission frame; 50, horizontal distance adjustment mechanism; 510, distance adjustment motor 1; 511, lead screw 1; 520, distance adjustment motor 2; 521, lead screw 2; 60, rotary drive mechanism; 610, linear drive member; 620, rack; 630, gear; 70, sheet metal member; 80, bending table; 810, clamping knife; 90, folding device. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figures 1 to 8 As shown, and refer to Figure 1 In the orientation shown in the figure, the embodiment of the bending machine of the present invention comprises a bending table 80, a clamping knife 810 arranged above the bending table 80, a lifting drive device 210, folding devices 90 and a support frame 20 distributed on both sides of the bending table 80, and a rotating adsorption device arranged on the support frame 20. Among them, the clamping knife 810 is used to clamp the sheet metal part 70 placed on the bending table 80, so as to facilitate the bending of the sheet metal part 70, the folding device 90 is used to turn the sheet metal part 70 pressed on one side of the bending table 80 upward, and the rotating adsorption device is used to take and place the sheet metal part 70 and control the sheet metal part 70 to change the bending edge.

[0030] The rotary adsorption device comprises an adsorption member, a two-position switching mechanism 40 , a horizontal distance adjustment mechanism 50 and a rotary driving mechanism 60 .

[0031] Five adsorbents are arranged side by side on the support frame 20. The support frame 20 has two slideways 220 extending left and right and facing each other front and back. Each adsorbent includes a mounting seat 310 and a suction cup 320. The mounting seat 310 has guide blocks 313 slidably assembled in the slideway 220 on the front and back sides. The mounting seat 310 has a cavity 311 in it. The top of the mounting seat 310 is provided with a connecting port 312 connected to the air pump. The suction cup 320 includes a disk body 321 and a connecting pipe 322. The upper end of the connecting pipe 322 is guided up and down and is movable and assembled on the mounting seat 310 with a limited position left and right. The connecting pipe 322 is connected to the cavity 311, and the lower end of the connecting pipe 322 is provided with a disk body 321. The air pump is used to suck or introduce gas into the cavity 311, the connecting pipe 322 and the disk body 321 in sequence through the connecting port 312 to control the inflow and outflow of air inside the suction cup 320, so that the suction cup 320 adsorbs or releases the sheet metal part 70. An elastic member 330 is disposed in the cavity 311 . The elastic member 330 is a spring and is used to apply an elastic force to the suction cup 320 to move the suction cup 320 downward to a low adsorption position.

[0032] The double-position switching mechanism 40 is used to drive each suction cup 320 to move up and down to control the suction cup 320 to remain in the high position or low position of adsorption, thereby adjusting the number of adsorbents in the working state. The double-position switching mechanism 40 includes a gear shifting motor 420, a gear shaft 430, a switching member and a transmission frame 440. The gear shaft 430 is rotatably mounted on the support frame 20, the gear shifting motor 420 is mounted on the support frame 20, the output end of the gear shifting motor 420 is connected to the gear shaft 430 to drive the gear shaft 430 to rotate, the switching member corresponds to the adsorbent one by one, each switching member is movably sleeved on the gear shaft 430 and rotates with the gear shaft 430, the switching member includes a ring body 411, and a plurality of push teeth 412 distributed circumferentially along the ring body 411. When the switching member rotates with the gear shaft 430, the push teeth 412 can push the suction cup 320 upward to keep the corresponding suction cup 320 in the high position of adsorption. Specifically, a plurality of limiting grooves are distributed in the circumferential direction of the gear shaft 430 , and the limiting grooves extend left and right. The inner circumference of the ring body 411 is provided with limiting blocks that slidably cooperate with the limiting grooves.

[0033] The transmission frame 440 corresponds to the adsorption member one by one, and is guided up and down and moved left and right to be assembled on the connecting pipe 322 of the suction cup 320. The transmission frame 440 abuts against the left and right end surfaces of the corresponding switching member to drive the switching member to move left and right, so that the switching member and the adsorption member remain corresponding.

[0034] The gear shaft 430 has five rotation gears for switching the suction cup 320 between the high adsorption position and the low adsorption position. The five rotation gears are evenly distributed along the gear shaft 430, and include the first gear, the second gear, the third gear, the fourth gear, and the fifth gear. The five adsorbents are divided into a middle adsorbent 301, an edge adsorbent 303, and a middle adsorbent 302 located between the middle adsorbent 301 and the edge adsorbent 303. The five switching parts are divided into a middle switching part 401, a middle switching part 402, and an edge switching part 403 corresponding to each adsorbent. The second gear and the fourth gear of the middle switching part 401 are respectively provided with a push tooth 412, the first gear and the fifth gear of the middle switching part 402 are respectively provided with a push tooth 412, and the first gear, the second gear, and the third gear of the edge switching part 403 are respectively provided with a push tooth 412.

[0035] When the gear shaft 430 rotates to the first gear corresponding to each suction cup 320, the pushing teeth 412 of the center switching member 402 and the edge switching member 403 push the suction cup 320 upward, so that the suction cup 320 of the center suction member 302 and the edge suction member 303 is in the high suction position, and the suction cup 320 of the middle suction member 301 is kept in the low suction position under the elastic force of the elastic member 330. The middle suction member 301 is in the working state, and the center suction member 302 and the edge suction member 303 enter the dormant state. At this time, the number of suction members in the working state is one. This gear is suitable for the situation where a single sheet metal part 70 needs to be processed each time, or the situation where a larger sheet metal part 70 needs to be processed by changing the edge.

[0036] When the gear shaft 430 rotates to the second gear corresponding to each suction cup 320, the pushing teeth 412 of the middle switching member 401 and the edge switching member 403 push the suction cup 320 upward, so that the suction cup 320 of the middle suction member 301 and the edge suction member 303 is in the high suction position, and the suction cup 320 of the middle suction member 302 is kept in the low suction position under the elastic force of the elastic member 330. The middle suction member 302 is in the working state, and the middle suction member 301 and the edge suction member 303 enter the dormant state. At this time, the number of suction members in the working state is two. This gear is suitable for the situation where two sheet metal parts 70 need to be processed each time, or the situation where the sheet metal parts 70 with larger sizes need to be processed by changing the edges.

[0037] When the gear shaft 430 rotates to the third gear corresponding to each suction cup 320, the pushing teeth 412 of the edge switching member 403 push the suction cup 320 upward, so that the suction cup 320 of the edge suction member 303 is in the high suction position, and the suction cup 320 of the middle suction member 301 and the middle-biased suction member 302 is kept in the low suction position under the elastic force of the elastic member 330. The middle suction member 301 and the middle-biased suction member 302 are in the working state, and the edge suction member 303 enters the dormant state. At this time, the number of suction members in the working state is three. This gear is suitable for the situation where three sheet metal parts 70 need to be processed each time, or the situation where the sheet metal parts 70 of moderate size need to be processed by edge change.

[0038] When the gear shaft 430 rotates to the fourth gear corresponding to each suction cup 320, the pushing teeth 412 of the middle switching member 401 push the suction cup 320 upward, so that the suction cup 320 of the middle suction member 301 is in the high suction position, and the suction cups 320 of the middle suction member 302 and the edge suction member 303 are kept in the low suction position under the elastic force of the elastic member 330. The middle suction member 302 and the edge suction member 303 are in the working state, and the middle suction member 301 enters the dormant state. At this time, the number of suction members in the working state is four. This gear is suitable for the situation where four sheet metal parts 70 need to be processed each time, or the situation where the sheet metal parts 70 with smaller sizes need to be processed by changing the edges.

[0039] When the gear shaft 430 rotates to the fifth gear corresponding to each suction cup 320, the pushing teeth 412 of the center-biased switching member 402 push the suction cup 320 upward, so that the suction cup 320 of the center-biased suction member 302 is in the high suction position, and the suction cups 320 of the middle suction member 301 and the edge suction member 303 are kept in the low suction position under the elastic force of the elastic member 330. It should be noted that at this time, all five suction members are in working state. This gear is suitable for processing five sheet metal parts 70 at a time, or for the situation where the smaller sheet metal parts 70 need to be processed by side-changing.

[0040] It is supplemented here that the description of the size of the sheet metal part 70 in the embodiment is arranged in order from large to small: large, relatively large, medium, relatively small, and relatively small.

[0041] The horizontal distance adjustment mechanism 50 is used to drive the mounting seat 310 to drive the suction cup 320 to move left and right, so as to adjust the distance between the suction parts in the working state to adapt to the size of the sheet metal part 70. The horizontal distance adjustment mechanism 50 includes a distance adjustment motor 1 510, a distance adjustment motor 2 520, a lead screw 1 511 and a lead screw 2 521. Screw 1 511 and screw 2 521 are rotatably installed on the support frame 20 respectively, and the pitch-adjusting motor 1 510 and the pitch-adjusting motor 2 520 are respectively installed on the support frame 20. The output end of the pitch-adjusting motor 1 510 is connected to screw 1 511 to drive screw 1 511 to rotate, and the output end of the pitch-adjusting motor 2 520 is connected to screw 2 521 to drive screw 2 521 to rotate. The mounting seat 310 of each edge adsorption member 303 is provided with a threaded hole threadedly connected to screw 1 511, and the mounting seat 310 of each center-bias adsorption member 302 is provided with a threaded hole threadedly connected to screw 2 521. The mounting seat 310 of each edge adsorption member 303 is also provided with a through hole for screw 2 521 to slide through.

[0042] Specifically, both the lead screw 511 and the lead screw 521 have a forward thread segment and a reverse thread segment, the threaded holes of the mounting seats 310 of the two edge adsorption members 303 are threadedly matched with the forward thread segment and the reverse thread segment of the lead screw 511, respectively, the threaded holes of the mounting seats 310 of the two center adsorption members 302 are threadedly matched with the forward thread segment and the reverse thread segment of the lead screw 521, respectively, and the guide block 313 on the mounting seat 310 of the middle adsorption member 301 is fixed at the middle position of the slide 220, thereby driving the two edge adsorption members 303 to approach or move away by the lead screw 511, and driving the two center adsorption members 302 to approach or move away by the lead screw 521, so that the adsorption members in working state at different gears can be evenly distributed along the length direction of the slide 220 to adapt to the size of the sheet metal part 70.

[0043] The rotary drive mechanism 60 is used to drive the adsorption member to rotate, so that the adsorption member in the working state drives the sheet metal member 70 to change the bending edge. The rotary drive mechanism 60 includes a linear drive member 610, a rack 620 and a gear 630. The rack 620 is assembled on the support frame 20 for left and right movement. The linear drive member 610 is installed on the support frame 20. The linear drive member 610 is a hydraulic cylinder. The output end of the linear drive member 610 is connected to the rack 620 to drive the rack 620 to move left and right. Each suction cup 320 is provided with a gear 630 for driving the suction cup 320 to rotate, and the gear 630 is meshed with the rack 620. In other embodiments, the linear drive member 610 can also be a cylinder or an electric push rod.

[0044] Specifically, the gear 630 is fixedly sleeved on the connecting tube 322 . When the rotation gear is switched, the pushing tooth 412 pushes the gear 630 on the connecting tube 322 upward to make the suction cup 320 enter the high suction position.

[0045] The lifting drive device 210 is used to drive the support frame 20 to move up and down to drive each adsorption member to move up and down, so that the adsorption member in the working state absorbs the sheet metal member 70. The lifting drive device 210 is a hydraulic cylinder. In other embodiments, the lifting drive device 210 can also be a cylinder or an electric push rod.

[0046] When the gear shaft 430 rotates to the first gear, the second gear, the third gear or the fourth gear, the lifting drive device 210 is used to drive the support frame 20 to move downward until the adsorption component in the low adsorption position contacts the sheet metal part 70 on the bending table 80, so that the adsorption component in the working state can adsorb the sheet metal part 70, and the adsorption component in the high adsorption position has a certain distance from the surface of the bending table 80 to avoid the adsorption component entering the dormant state affecting the normal adsorption and side switching work.

[0047] When the gear shaft 430 rotates to the fifth gear, the lifting drive device 210 is used to drive the support frame 20 to move down until the adsorption parts in the low adsorption position and the high adsorption position all contact the sheet metal part 70 located on the bending table 80, so that the five adsorption parts in the working state can all adsorb the sheet metal part 70. At this time, the compression amount of the elastic part 330 of the middle adsorption part 302 in the high adsorption position is less than the compression amount of the elastic part 330 of the middle adsorption part 301 and the edge adsorption part 303 in the low adsorption position, and then the lifting drive device 21 After the support frame 20 is driven to move upward until all the adsorption components drive the sheet metal components 70 to be separated from the bending table 80, the center adsorption component 302 is reset to the high adsorption position, and the middle adsorption component 301 and the edge adsorption component 303 are reset to the low adsorption position, so that the sheet metal component 70 corresponding to the center adsorption component 302 and the sheet metal components 70 corresponding to the middle adsorption component 301 and the edge adsorption component 303 are staggered in height, so as to avoid collision between two adjacent sheet metal components 70 when the rotary drive mechanism 60 drives the adsorption components to rotate, so as to improve the applicability and utilization rate of the equipment.

[0048] In this way, the bending machine is provided with five rotation gears, which can adjust the number of adsorption parts in working state and the distance between the adsorption parts in working state according to the needs of batch production and the size of the sheet metal parts 70, thereby meeting the edge change processing of multiple sheet metal parts 70 and sheet metal parts 70 of different sizes. It has good versatility, is convenient and fast, has high production flexibility, and can effectively improve production efficiency.

[0049] The present invention also provides an embodiment of a bending center, including a workbench 10, a feeding drive device 120 arranged on the workbench 10 and a bending machine. A plurality of positioning columns 110 are arranged on the workbench 10, which can help the staff to accurately place the sheet metal part 70 in the correct position. The upper surface of the positioning column 110 is flush with the bending table 80. The feeding drive device 120 is used to drive the support frame 20 to move forward and backward to drive the adsorption part to move forward and backward, thereby transferring the sheet metal part 70 on the workbench 10 to the bending table 80. The feeding drive device 120 is driven by a structure in which a motor and a screw are connected, which will not be elaborated here.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A bending machine, comprising a bending table and a pressing knife arranged above the bending table, characterized in that: It also includes a lifting drive device, a folding device and a support frame distributed on the front and rear sides of the bending table, and a rotating adsorption device is arranged on the support frame; the rotating adsorption device includes an adsorption member, a two-position switching mechanism, a horizontal distance adjustment mechanism and a rotating drive mechanism, and five adsorption members are arranged side by side on the support frame, each adsorption member includes a mounting seat mounted on the support frame for left and right movement and a suction cup mounted on the mounting seat for left and right movement and guided up and down and limitedly moved left and right, and an elastic member is provided between the mounting seat and the suction cup to apply an elastic force to the suction cup to move the suction cup down to the low adsorption position; the two-position switching mechanism is used to drive each suction cup to move up and down to control the suction cup to remain in the high adsorption position or the low adsorption position, thereby adjusting the number of adsorption members in working state; the horizontal distance adjustment mechanism is used to drive the mounting seat to drive the suction cup to move left and right, so as to adjust the distance between the adsorption members in working state to adapt to the size of the sheet metal; the rotating drive mechanism is used to drive the adsorption member to rotate, so that the adsorption member in working state drives the sheet metal to change the bending edge; the lifting drive device is used to drive the support frame to move up and down to drive each adsorption member to move up and down, so that the adsorption member in working state absorbs the sheet metal; The double-position switching mechanism includes a shifting motor, a shift shaft, a switching member and a transmission frame. The shift shaft is rotatably mounted on the support frame, the shifting motor is mounted on the support frame, the output end of the shifting motor is connected to the shift shaft to drive the shift shaft to rotate, the switching member corresponds to the adsorption member one by one, each switching member is sleeved on the shift shaft for movement left and right and rotates with the shift shaft, the switching member includes a ring body and a plurality of pushing teeth distributed along the circumference of the ring body, when the switching member rotates with the shift shaft, the pushing teeth can push the suction cup upward to keep the corresponding suction cup at the high adsorption position; the transmission frame corresponds to the adsorption member one by one, and is guided up and down and movably assembled on the suction cup with left and right limit, the transmission frame abuts against the left and right end faces of the corresponding switching member to drive the switching member to move left and right; The gear shaft has five rotation gears for switching the suction cup between a high adsorption position and a low adsorption position, and the five rotation gears are evenly distributed along the circumference of the gear shaft, and include a first gear, a second gear, a third gear, a fourth gear and a fifth gear; the five adsorption members are divided into a middle adsorption member, an edge adsorption member, and a center-biased adsorption member located between the middle adsorption member and the edge adsorption member; the five switching members are divided into a middle switching member, a center-biased switching member and an edge switching member corresponding to each adsorption member; the second gear and the fourth gear of the middle switching member are respectively provided with pushing teeth, the first gear and the fifth gear of the center-biased switching member are respectively provided with pushing teeth, and the first gear, the second gear and the third gear of the edge switching member are respectively provided with pushing teeth.

2. A bending machine according to claim 1, characterized in that: The rotary drive mechanism includes a linear drive component, a rack and a gear. The rack is assembled on the support frame for left and right movement. The linear drive component is installed on the support frame. The output end of the linear drive component is connected to the rack to drive the rack to move left and right. Each suction cup is provided with a gear for driving the suction cup to rotate, and the gear is meshed with the rack.

3. A bending machine according to claim 1, characterized in that: The suction cup comprises a cup body and a connecting pipe, the mounting seat has a cavity connected with the connecting pipe, the elastic member is installed in the cavity, and the top of the mounting seat is provided with a connecting port connected with the air pump.

4. A bending machine according to claim 1, characterized in that: The horizontal pitch adjusting mechanism includes a pitch adjusting motor 1, a pitch adjusting motor 2, a lead screw 1 and a lead screw 2. The lead screw 1 and the lead screw 2 are respectively rotatably installed on the support frame. The pitch adjusting motor 1 and the pitch adjusting motor 2 are respectively installed on the support frame. The output end of the pitch adjusting motor 1 is connected to the lead screw 1 to drive the lead screw 1 to rotate. The output end of the pitch adjusting motor 2 is connected to the lead screw 2 to drive the lead screw 2 to rotate. The mounting seat of each edge adsorption member is provided with a threaded hole threadedly connected to the lead screw 1, and the mounting seat of each mid-eccentric adsorption member is provided with a threaded hole threadedly connected to the lead screw 2.

5. A bending machine according to claim 4, characterized in that: The mounting seat of each edge adsorption member is also provided with a through hole for the second lead screw to slide through.

6. A bending machine according to claim 1, characterized in that: The support frame is provided with two slideways extending left and right and facing each other front and back, and the front and rear sides of the mounting seat are provided with guide blocks slidably assembled in the slideways.

7. A bending machine according to claim 1, characterized in that: A plurality of limiting grooves are distributed circumferentially on the gear shaft, the limiting grooves extend left and right, and limiting blocks that slide in cooperation with the limiting grooves are arranged on the inner circumference of the ring body.

8. A bending center, characterized in that: It includes a workbench, a feeding drive device arranged on the workbench and a bending machine as described in any one of claims 1 to 7, wherein a plurality of positioning columns are arranged on the workbench, and the upper surfaces of the positioning columns are flush with the bending table, and the feeding drive device is used to drive the support frame to move forward and backward to drive the adsorption part to move forward and backward, thereby transferring the sheet metal parts on the workbench to the bending table.

Images