A bending positioning device

Abstract

The present invention relates to the technical field of bending equipment, and particularly relates to a bending positioning device, which includes a bending mechanism, a vision recognition system and a workbench. The bending mechanism is located above the workbench. On one side surface of the workbench, there are a positioning pin, a first alignment mechanism, a second alignment mechanism and a workpiece. The workpiece is located between the first alignment mechanism and the second alignment mechanism, and the workpiece is sleeved on the positioning pin. The vision recognition system is electrically connected to the bending mechanism, the first alignment mechanism and the second alignment mechanism respectively. By setting the positioning pin, the first alignment mechanism, the second alignment mechanism and the vision recognition system, before the workpiece is bent, the workpiece can be positioned through the mutual cooperation of the vision recognition system, the positioning pin, the first alignment mechanism and the second alignment mechanism, so that the workpiece can be more accurate when being bent, and the processing precision of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bending equipment, and particularly relates to a bending positioning device. Background Art

[0002] Existing bending mechanisms all position the product physically, such as positioning by holes or edges. This patent uses hole positioning as an example, but is not limited to hole positioning. Due to the tolerance of the product hole diameter and the need to ensure smooth assembly during the process of placing the product on the positioning pin, there needs to be a certain gap between the positioning pin and the product. Theoretically, we need the center of the product hole to be concentric with the positioning pin. In fact, this concentricity cannot be guaranteed through pin-hole positioning. Due to the tolerance of the product hole diameter, the machining accuracy tolerance of the mold and fixture, and the assembly gap that needs to be reserved, there will be some position offsets in the product pin-hole positioning, resulting in inaccurate bending positions of the product and low machining accuracy of the product. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide a bending positioning device with high machining accuracy of products.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is:

[0005] A bending positioning device, including a bending mechanism, a vision recognition system and a workbench. The bending mechanism is located above the workbench. On one side surface of the workbench, there are a positioning pin, a first alignment mechanism, a second alignment mechanism and a workpiece. The workpiece is located between the first alignment mechanism and the second alignment mechanism, and the workpiece is sleeved on the positioning pin. The vision recognition system is electrically connected to the bending mechanism, the first alignment mechanism and the second alignment mechanism respectively.

[0006] The beneficial effect of the present invention is:

[0007] By setting the positioning pin, the first alignment mechanism, the second alignment mechanism and the vision recognition system, before the workpiece is bent, the workpiece can be positioned through the mutual cooperation of the vision recognition system, the positioning pin, the first alignment mechanism and the second alignment mechanism, so that the bending of the workpiece can be more accurate and the machining accuracy of the product can be improved. Brief Description of the Drawings

[0008] Figure 1 It is a schematic structural diagram of a bending positioning device of the present invention;

[0009] Figure 2 It is a schematic structural diagram of a bending positioning device of the present invention;

[0010] Figure 3 It is a front view structural diagram of a bending positioning device of the present invention;

[0011] Figure 4 Side view structural schematic diagram of a bending positioning device of the present invention;

[0012] Figure 5 Internal structural schematic diagram of a workbench in a bending positioning device of the present invention;

[0013] Figure 6 Partial structural schematic diagram of a bending positioning device of the present invention;

[0014] Label description:

[0015] 1. Bending mechanism;

[0016] 2. Workbench; 21. Screw; 22. First slider; 23. Second slider; 24. Driving motor;

[0017] 3. Positioning pin;

[0018] 4. First alignment mechanism; 41. First alignment component; 411. First pressing plate; 412. First connecting rod; 413. First hydraulic cylinder; 414. First fixing plate; 42. Second alignment component; 421. Second pressing plate; 422. Second connecting rod; 423. Second hydraulic cylinder; 424. Second fixing plate;

[0019] 5. Second alignment mechanism; 51. Side plate; 52. Third hydraulic cylinder; 53. Third pressing plate; 531. Third baffle; 532. Fourth baffle; 533. Fastener;

[0020] 6. Workpiece. Detailed implementation manner

[0021] To describe in detail the technical content, achieved purpose and effect of the present invention, the following is described in conjunction with the implementation manners and with reference to the accompanying drawings.

[0022] Please refer to Figure 1 , the technical solution provided by the present invention:

[0023] A bending positioning device, comprising a bending mechanism, a visual recognition system and a workbench. The bending mechanism is located above the workbench. A positioning pin, a first alignment mechanism, a second alignment mechanism and a workpiece are arranged on one side surface of the workbench. The workpiece is located between the first alignment mechanism and the second alignment mechanism, and the workpiece is sleeved on the positioning pin. The visual recognition system is electrically connected to the bending mechanism, the first alignment mechanism and the second alignment mechanism respectively.

[0024] It can be seen from the above description that the beneficial effect of the present invention is that:

[0025] By setting positioning pins, a first alignment mechanism, a second alignment mechanism, and a vision recognition system, before the workpiece is bent, the workpiece can be positioned through the mutual cooperation of the vision recognition system, positioning pins, the first alignment mechanism, and the second alignment mechanism, so that the workpiece can be more accurate when bent, improving the processing accuracy of the product.

[0026] Furthermore, the first alignment mechanism includes a first alignment component and a second alignment component. The first alignment component and the second alignment component are respectively located on opposite sides of the workpiece, and the second alignment mechanism is located on one side of the other opposite sides of the workpiece.

[0027] As can be seen from the above description, through the first positioning component and the second positioning component, the workpiece can be clamped and positioned from different positions of the workpiece respectively, making the processing more accurate.

[0028] Furthermore, the bending mechanism is arranged above the other side opposite to the side where the second alignment mechanism is located on the other opposite sides of the workpiece, and one end of the workpiece away from the second alignment mechanism extends out of one side surface of the workbench.

[0029] As can be seen from the above description, through the bending mechanism, the positioned workpiece can be bent.

[0030] Furthermore, a screw rod is rotatably connected between the inner cavity side walls of the workbench. A first sliding block and a second sliding block are sleeved on the screw rod. A driving motor is fixedly connected to the outer wall of the workbench, and the output shaft of the driving motor is fixedly connected to one end of the screw rod;

[0031] The first alignment component includes a first pressing plate, a first connecting rod, and a first hydraulic cylinder. The second alignment component includes a second pressing plate, a second connecting rod, and a second hydraulic cylinder. The first hydraulic cylinder is fixedly connected to the first slider, and the second hydraulic cylinder is fixedly connected to the second slider. One end of the first connecting rod is fixedly connected to the first pressing plate, and the other end opposite to one end of the first connecting rod extends into the inner cavity of the workbench and is slidably connected to the first slider. The telescopic end of the first hydraulic cylinder is fixedly connected to the first connecting rod. One end of the second connecting rod is fixedly connected to the second pressing plate, and the other end opposite to one end of the second connecting rod extends into the inner cavity of the workbench and is slidably connected to the second slider. The telescopic end of the second hydraulic cylinder is fixedly connected to the second connecting rod;

[0032] The first hydraulic cylinder, the second hydraulic cylinder, and the driving motor are all electrically connected to the vision recognition system.

[0033] As can be seen from the above description, during positioning, the first hydraulic cylinder and the second hydraulic cylinder can be controlled by the recognition system to clamp and fix the workpiece, and then the rotation motor can be controlled to drive the screw to rotate and drive the first pressing plate and the second pressing plate to move left and right back and forth simultaneously, thereby driving the workpiece to move left and right for positioning.

[0034] Furthermore, both the first pressing plate and the second pressing plate are perpendicularly arranged with respect to the workbench. One end of the first pressing plate away from the workbench perpendicularly extends towards the direction close to the second pressing plate to form a first baffle, and one end of the second pressing plate away from the workbench perpendicularly extends towards the direction close to the first pressing plate to form a second baffle.

[0035] As can be seen from the above description, the workpiece can be pressed by the extended first baffle and second baffle, thereby further ensuring the stability of the workpiece during processing.

[0036] Furthermore, a first fixing plate is provided on the first slider, and a second fixing plate is provided on the second slider. The first hydraulic cylinder is fixedly installed on one side surface of the first fixing plate away from the first slider, and the second hydraulic cylinder is fixedly installed on one side surface of the second fixing plate away from the second slider. A first sliding groove for the first connecting rod to slide is formed on one side surface of the first fixing block away from the first slider, and a second sliding groove for the second connecting rod to slide is formed on one side surface of the second fixing block away from the second slider.

[0037] As can be seen from the above description, by providing the first fixing plate and the second fixing plate, the sliding of the first connecting rod and the second connecting rod can be facilitated, and at the same time, the setting of the first hydraulic cylinder and the second hydraulic cylinder can be facilitated.

[0038] Furthermore, a first through groove for the first connecting rod to slide and a second through groove for the second connecting rod to slide are provided on the workbench.

[0039] As can be seen from the above description, the sliding of the first connecting rod and the second connecting rod is facilitated through the first through groove and the second through groove.

[0040] Furthermore, the second positioning mechanism includes a side plate and a third hydraulic cylinder. The side plate is vertically installed on the workbench, the third hydraulic cylinder is fixedly installed on one side surface of the side plate close to the workpiece, and a third pressing plate is fixedly connected to the telescopic end of the third hydraulic cylinder.

[0041] As can be seen from the above description, the side plate can play a role in supporting the third hydraulic cylinder to ensure the stability of the third hydraulic cylinder; setting the third pressing plate can play a role in fixing the workpiece.

[0042] Further, third baffles and fourth baffles are perpendicularly installed at opposite ends of the third pressing plate respectively. A fastener is provided on the third baffle. The fastener includes a bolt and a nut. The nut is fixedly arranged on a side surface of the third baffle away from the fourth baffle, and one end of the bolt sequentially penetrates through the nut and the first baffle.

[0043] As can be seen from the above description, during positioning, the workpiece can be locked by the bolt, and the third pressing plate can be driven by the third hydraulic cylinder to move, thereby achieving positioning. Moreover, the bolt and the nut facilitate disassembly.

[0044] Further, the number of the positioning pins is two. The two positioning pins are symmetrically arranged and both are located between the first alignment mechanism and the second alignment mechanism. Positioning holes for the positioning pins to pass through are provided on the workpiece, and the positioning holes are in clearance fit with the positioning pins.

[0045] As can be seen from the above description, by providing two sets of positioning pins, during the positioning by the positioning mechanism, the cooperation of the two sets of positioning pins enables more accurate and rapid positioning of the workpiece.

[0046] Please refer to Figures 1 to 6 , Embodiment 1 of the present invention is as follows:

[0047] Please refer to Figures 1 to 4 , A bending and positioning device includes a bending mechanism 1, a vision recognition system, and a workbench 2. The bending mechanism 1 is located above the workbench 2. A positioning pin 3, a first alignment mechanism 4, a second alignment mechanism 5, and a workpiece 6 are provided on a side surface of the workbench 2. The workpiece 6 is located between the first alignment mechanism 4 and the second alignment mechanism 5, and the workpiece 6 is sleeved on the positioning pin 3. The vision recognition system is electrically connected to the bending mechanism 1, the first alignment mechanism 4, and the second alignment mechanism 5 respectively.

[0048] The first alignment mechanism 4 includes a first alignment component 41 and a second alignment component 42. The first alignment component 41 and the second alignment component 42 are respectively located on opposite sides of the workpiece 6. The second alignment mechanism 5 is located on one side of the other opposite sides of the workpiece 6.

[0049] The bending mechanism 1 is arranged above the other side opposite to the side where the second alignment mechanism 5 is located on the other opposite sides of the workpiece 6. One end of the workpiece 6 away from the second alignment mechanism 5 extends out of a side surface of the workbench 2.

[0050] Please refer to Figure 5, a screw rod 21 is rotatably connected between the side walls of the inner cavity of the workbench 2. The screw rod 21 is rotatably connected to the side walls of the inner cavity of the workbench 2 through bearings. A first sliding block and a second sliding block are sleeved on the screw rod 21. A driving motor 24 is fixedly connected to the outer wall of the workbench 2, and the output shaft of the driving motor 24 is fixedly connected to one end of the screw rod 21;

[0051] The first alignment component 41 includes a first pressing plate 411, a first connecting rod 412, and a first hydraulic cylinder 413. The second alignment component 42 includes a second pressing plate 421, a second connecting rod 422, and a second hydraulic cylinder. The first hydraulic cylinder 413 is fixedly connected to the first slider 22, the second hydraulic cylinder is fixedly connected to the second slider 23. One end of the first connecting rod 412 is fixedly connected to the first pressing plate 411, and the other end opposite to one end of the first connecting rod 412 extends into the inner cavity of the workbench 2 and is slidably connected to the first slider 22. The telescopic end of the first hydraulic cylinder 413 is fixedly connected to the first connecting rod 412. One end of the second connecting rod 422 is fixedly connected to the second pressing plate 421, and the other end opposite to one end of the second connecting rod 422 extends into the inner cavity of the workbench 2 and is slidably connected to the second slider 23. The telescopic end of the second hydraulic cylinder is fixedly connected to the second connecting rod 422;

[0052] The first hydraulic cylinder 413, the second hydraulic cylinder, and the driving motor 24 are all electrically connected to the vision recognition system.

[0053] Both the first pressing plate 411 and the second pressing plate 421 are perpendicularly arranged with respect to the workbench 2. One end of the first pressing plate 411 away from the workbench 2 perpendicularly extends towards the direction close to the second pressing plate 421 to form a first baffle, and one end of the second pressing plate 421 away from the workbench 2 perpendicularly extends towards the direction close to the first pressing plate 411 to form a second baffle.

[0054] A first fixing plate 414 is provided on the first slider 22, and a second fixing plate 424 is provided on the second slider 23. The first hydraulic cylinder 413 is fixedly installed on the side surface of the first fixing plate 414 away from the first slider 22, and the second hydraulic cylinder is fixedly installed on the side surface of the second fixing plate 424 away from the second slider 23. A first sliding groove for the first connecting rod 412 to slide is formed on the side surface of the first fixing block away from the first slider 22, and a second sliding groove for the second connecting rod 422 to slide is formed on the side surface of the second fixing block away from the second slider 23.

[0055] The workbench 2 is provided with a first through groove for the first connecting rod 412 to slide and a second through groove for the second connecting rod 422 to slide.

[0056] Please refer to Figure 2 、 Figure 3 and Figure 6, the second positioning mechanism includes a side plate 51 and a third hydraulic cylinder 52. The side plate 51 is vertically installed on the workbench 2, and the third hydraulic cylinder 52 is fixedly installed on one side of the side plate 51 close to the workpiece 6. A third pressing plate 53 is fixedly connected to the telescopic end of the third hydraulic cylinder 52.

[0057] At opposite ends of the third pressing plate 53, a third baffle 531 and a fourth baffle 532 are vertically installed respectively. A fastener 533 is provided on the third baffle 531. The fastener 533 includes a bolt and a nut. The nut is fixedly arranged on one side of the third baffle 531 away from the fourth baffle 532, and one end of the bolt sequentially passes through the nut and the first baffle.

[0058] The number of the positioning pins 3 is two. The two positioning pins 3 are symmetrically arranged and are both located between the first alignment mechanism 4 and the second alignment mechanism 5. Positioning holes for the positioning pins 3 to pass through are provided on the workpiece 6, and the positioning holes are in clearance fit with the positioning pins 3.

[0059] The vision recognition system includes a controller and a photographing device. The photographing device uses a CCD camera. The structure of the vision recognition system can refer to the patent with the application number "CN201720389305.5" and the patent name "Vision Recognition System".

[0060] The working principle of the above-mentioned bending alignment equipment is as follows:

[0061] During processing, the workpiece 6 is placed on the surface of the workbench 2, and the two positioning holes of the workpiece 6 are inserted into the two groups of positioning pins 3. Then, through the CCD camera above the surface of the workbench 2 and the controller electrically connected thereto, the first positioning mechanism 4 and the second positioning mechanism are controlled to work to accurately position the workpiece 6, so as to ensure the accuracy during processing.

[0062] Its alignment process is as follows: Place the workpiece 6 on the workbench 2, then start the third hydraulic cylinder 52 to make the third pressing plate 53 abut against the edge of the workpiece 6, and then fix one side of the workpiece 6 through the fastener 533 to complete the installation of the workpiece 6; then the alignment CCD camera records the positioning holes and the positioning pins 3 in real time, and then transmits the information to the controller. Then the controller first controls the first hydraulic cylinder 413 and the second hydraulic cylinder to respectively push the first connecting rod 412 and the second connecting rod 422 to slide, so that the first pressing plate 411 and the second pressing plate 421 clamp and fix the workpiece 6. Then, the controller judges the left - right deviation degree between the positioning hole and the positioning pin 3 through the CCD camera. When there is a left - right deviation, the controller controls the driving motor 24 to rotate forward and backward reciprocally, so that the screw rod 21 drives the first slider 22 and the second slider 23 to slide back and forth, and further enables the first pressing plate 411 and the second pressing plate 421 to push the workpiece 6 to move left and right, completing the alignment of the left - right deviation degree of the workpiece 6;

[0063] When the front and rear positions of the workpiece 6 are offset, the third hydraulic cylinder 52 is activated. The third hydraulic cylinder 52 pushes the third pressing plate 53 to move back and forth, thereby driving the workpiece 6 to reciprocate back and forth, completing the alignment of the front and rear offset degrees of the workpiece 6, and ensuring the accuracy of the installation of the workpiece 6.

[0064] After the alignment of the workpiece 6 is completed, the pressing block in the bending mechanism 1 above the workbench 2 is lowered to press one end of the workpiece 6 for further fixation, and then the punch in the bending mechanism 1 is used to perform bending processing on the workpiece 6.

[0065] In summary, a bending positioning device provided by the present invention, through the setting of positioning pins, a first alignment mechanism, a second alignment mechanism, and a visual recognition system, enables the workpiece to be positioned through the mutual cooperation of the visual recognition system, positioning pins, the first alignment mechanism, and the second alignment mechanism before bending processing, so that the workpiece can be more accurate when bent, and the processing accuracy of the product is improved.

[0066] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A bending positioning device, characterized in that, It includes a bending mechanism, a vision recognition system and a workbench. The bending mechanism is located above the workbench. On one side surface of the workbench, there are positioning pins, a first alignment mechanism, a second alignment mechanism and a workpiece. The workpiece is located between the first alignment mechanism and the second alignment mechanism, and the workpiece is sleeved on the positioning pins. The vision recognition system is electrically connected to the bending mechanism, the first alignment mechanism and the second alignment mechanism respectively; The first alignment mechanism includes a first alignment component and a second alignment component. The first alignment component and the second alignment component are respectively located on opposite sides of the workpiece, and the second alignment mechanism is located on one side of the other opposite sides of the workpiece; A screw rod is rotatably connected between the inner cavity side walls of the workbench. A first sliding block and a second sliding block are sleeved on the screw rod. A driving motor is fixedly connected to the outer wall of the workbench, and the output shaft of the driving motor is fixedly connected to one end of the screw rod; The first alignment component includes a first pressing plate, a first connecting rod and a first hydraulic cylinder. The second alignment component includes a second pressing plate, a second connecting rod and a second hydraulic cylinder. The first hydraulic cylinder is fixedly connected to the first sliding block, and the second hydraulic cylinder is fixedly connected to the second sliding block. One end of the first connecting rod is fixedly connected to the first pressing plate, and the other end opposite to one end of the first connecting rod extends into the inner cavity of the workbench and is slidably connected to the first sliding block. The telescopic end of the first hydraulic cylinder is fixedly connected to the first connecting rod. One end of the second connecting rod is fixedly connected to the second pressing plate, and the other end opposite to one end of the second connecting rod extends into the inner cavity of the workbench and is slidably connected to the second sliding block. The telescopic end of the second hydraulic cylinder is fixedly connected to the second connecting rod; The first hydraulic cylinder, the second hydraulic cylinder and the driving motor are all electrically connected to the vision recognition system; Both the first pressing plate and the second pressing plate are perpendicularly arranged with respect to the workbench. One end of the first pressing plate away from the workbench vertically extends towards the direction close to the second pressing plate to form a first baffle, and one end of the second pressing plate away from the workbench vertically extends towards the direction close to the first pressing plate to form a second baffle; A first fixing plate is provided on the first sliding block, and a second fixing plate is provided on the second sliding block. The first hydraulic cylinder is fixedly installed on one side surface of the first fixing plate away from the first sliding block, and the second hydraulic cylinder is fixedly installed on one side surface of the second fixing plate away from the second sliding block. A first sliding groove for the first connecting rod to slide is opened on one side surface of the first fixing plate away from the first sliding block, and a second sliding groove for the second connecting rod to slide is opened on one side surface of the second fixing plate away from the second sliding block.

2. The bending positioning device according to claim 1, characterized in that, The bending mechanism is arranged above the other side of the second alignment mechanism located on one side of the other opposite sides of the workpiece, and one end of the workpiece away from the second alignment mechanism extends out of one side surface of the workbench.

3. The bending positioning device according to claim 1, wherein, On the workbench, there are a first through groove for the first connecting rod to slide and a second through groove for the second connecting rod to slide.

4. The bending positioning device according to claim 1, wherein The second alignment mechanism includes a side plate and a third hydraulic cylinder. The side plate is vertically installed on the workbench, and the third hydraulic cylinder is fixedly installed on one side surface of the side plate close to the workpiece. A third pressing plate is fixedly connected to the telescopic end of the third hydraulic cylinder.

5. The bending positioning device according to claim 4, wherein The opposite ends of the third pressing plate are respectively and vertically provided with a third baffle and a fourth baffle. A fastener is provided on the third baffle. The fastener includes a bolt and a nut. The nut is fixedly arranged on the side surface of the third baffle away from the fourth baffle. One end of the bolt sequentially penetrates through the nut and the first baffle.

6. The bending positioning device according to claim 1, characterized in that, The number of the positioning pins is two. The two positioning pins are symmetrically arranged and are both located between the first alignment mechanism and the second alignment mechanism. The workpiece is provided with positioning holes for the positioning pins to pass through. The positioning holes are in clearance fit with the positioning pins.

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