Double-bending tool and process

Abstract

The invention relates to the technical field of bending machines, in particular to a double-bending tool and process, the double-bending tool is fixedly connected with a lower die base of a bending machine, the double-bending tool comprises a bearing assembly, a limiting assembly and an adjusting assembly, the bearing assembly is used for bearing a machined plate, the limiting assembly is used for limiting the positioning relation between the machined plate and a bending machine die, and the adjusting assembly is used for adjusting the positioning relation between the machined plate and the bending machine die. The adjusting assembly is used for adjusting the positioning precision of the limiting assembly. According to the bending machine auxiliary tool and technology, servo motor driving is not needed, the structure is simple, the positioning precision of the limiting baffle can be rapidly adjusted, work is stable and reliable, and the cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of bending machines, in particular to a double bending tool and process. Background Art

[0002] In sheet metal processing, the combination of the edge pressing process and the bending process can significantly improve the strength and rigidity of the parts. The edge pressing process increases the local thickness and strength by folding the edge of the single-layer plate into two layers, while the bending process further enhances the overall rigidity by changing the shape of the plate.

[0003] Among them, the double edge pressing process is a commonly used method, that is, a flat plate is overlapped with a layer of plate and then edge pressed to become two layers of plate. After the two layers of plate are bent, the structural strength of the parts can be greatly improved. Since there are openings on both sides of the edge pressing line, the openings on both sides of the inner and outer plates must overlap after bending, otherwise the parts will not only look ugly but also affect the use, and become unqualified products. Therefore, the positioning accuracy of the center edge pressing line in the bending process is required to be guaranteed to a higher range.

[0004] In the bending process, the plate needs to be positioned through the rear baffle, and the upper and lower dies of the bending machine are used to be bent. The rear baffle is adjusted by the rear linkage mechanism driven by a servo motor. Since the left and right sides of the rear baffle are driven by different servo motors, there is a left and right drive deviation, or due to the wear of the components, there is often an inconsistency between the positioning of the two sides of the rear baffle and the bending machine die, resulting in inaccurate positioning of the center edge pressing line, and the openings on both sides after edge pressing cannot overlap, resulting in unqualified parts. In order to overcome this problem, the existing method is for experienced technicians to manually adjust the rear baffle. The adjustment process is relatively complicated and time-consuming, affecting production efficiency. Summary of the invention

[0005] The present invention provides a double bending tool and process, which does not require a servo motor drive, has a simple structure, can quickly adjust the accuracy of the limit baffle, works stably and reliably, and has a low cost.

[0006] This application provides the following technical solutions:

[0007] The double bending tooling is fixedly connected to the lower die base of the bending machine, and includes a bearing assembly, a limiting assembly and an adjustment assembly. The bearing assembly is used to bear the processed plate, the limiting assembly is used to limit the positioning relationship between the processed plate and the bending machine die, and the adjustment assembly is used to adjust the positioning accuracy of the limiting assembly.

[0008] Furthermore, the bearing assembly includes a fixed support fixedly connected to the lower mold base of the bending machine and a bearing support slidably connected to the fixed support. The upper sides of the fixed support have opposite side panels to form a vertical recess, and the inner walls on both sides of the vertical recess are provided with sliding grooves. The bottom sides of the bearing support are provided with guide rails embedded in the sliding grooves, and the bearing support can move forward and backward along the sliding grooves.

[0009] Furthermore, the limit assembly is an L-shaped limit baffle, including an upper vertical baffle and a lower horizontal base, the horizontal base is provided with a transverse through hole, and the top surface height of the horizontal base is the same as the height of the lower mold of the bending machine; the upper part of the bearing support is provided with a raised left plate and a right plate, the left plate and the right plate are provided with relative positioning holes, and the limit baffle is respectively connected to the left plate and the right plate through positioning pins.

[0010] Furthermore, the left side plate and the right side plate are provided with a plurality of groups of positioning holes.

[0011] Furthermore, the calibration and adjustment component includes an adjustment bracket and a screw rod, the adjustment bracket is fixedly connected to the bearing component, and the screw rod is fixedly connected to the adjustment bracket and the bearing component respectively.

[0012] Furthermore, the adjustment bracket is an inverted L-shape, including an upper horizontal portion and a lower vertical portion, the top surface of the horizontal portion is in contact with the bottom surface of the bearing support and is fixedly connected by bolts, and the vertical portion is provided with an opening for the screw to pass through; an adjustment handle is provided at the rear of the screw, and the length of the screw is greater than the distance between the front end surface of the fixed support and the front end surface of the bearing support; the screw is connected to the adjustment bracket through adjustment nuts on both sides of the opening, and the adjustment bracket can drive the bearing support to move forward and backward in the slide groove.

[0013] Furthermore, three herringbone mounting holes are provided at the lower end of the fixed support, the two lower mounting holes are used for connecting the fixed support with the lower mold base; and the upper mounting hole is used for connecting the screw rod with the lower mold base.

[0014] Furthermore, the double bending tooling includes a left tooling and a right tooling, which are symmetrically arranged on both sides of the lower die base of the bending machine.

[0015] The principle and advantage of the present invention are: providing a bending machine auxiliary tooling with a simple structure and convenient adjustment, the auxiliary tooling is fixedly connected to the lower die base of the bending machine, and the limit baffle on the auxiliary tooling has an exact positioning relationship with the bending machine die. The present invention realizes the position adjustment of the bearing support by setting a screw on the bearing support, and the overall accuracy of the center edge pressing line of the plate can be accurately adjusted by adjusting the left and right bearing supports and the left and right limit baffles respectively.

[0016] At the same time, different positioning holes are provided on the bearing support. The pressure edge distance can be adjusted quickly by simply fixing the limit baffle in different positioning holes. The adjustment process is all mechanical structure without the participation of servo motors, avoiding the driving deviation caused by different servo motors, and the positioning is simple and reliable.

[0017] Compared with the traditional manual adjustment method, the double bending tooling of the present invention has a simple structure, is stable and reliable, and does not require a servo motor drive, thereby reducing costs.

[0018] On the other hand, the present invention also provides a process method using any of the above double bending tooling, comprising the following steps:

[0019] S01. Install a positioning pin in the corresponding positioning hole of the bearing support on one side to fix the limit baffle;

[0020] S02, respectively unscrewing the adjusting nuts on both sides of the opening of the side adjustment bracket in the opposite direction of the adjustment bracket, so that the side screw can move back and forth in the opening; using a vernier caliper to measure the distance between the limit baffle and the edge of the lower mold of the bending machine, and adjusting the distance between the bearing support and the lower mold of the bending machine by adjusting the nuts until the preset distance is reached;

[0021] S03, screwing the adjusting nuts on both sides of the opening of the adjusting bracket on the side toward the adjusting bracket to fix the adjusting bracket;

[0022] S04, repeat S01 to S03 for the bearing support on the other side;

[0023] S05. Place the plate to be processed and perform bending operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the overall structure diagram of the double bending tooling;

[0025] Figure 2 It is a front side view of the left tool of the double bending tool;

[0026] Figure 3 It is a rear side view of the left tool of the double bending tool;

[0027] Figure 4 It is a side view of the left tool of the double bending tool;

[0028] Figure 5 Flow chart of the double bending process. DETAILED DESCRIPTION

[0029] During the processing of the bending machine, a baffle is required to limit the plate to be processed. In the traditional solution, the distance between the limit baffle and the mold is adjusted by a servo motor to adjust the edge holding position, but the servo motors on both sides of the baffle may have drive differences, or the components may be worn, causing the edge holding center line to deviate, affecting production quality.

[0030] The invention provides a double bending tool based on a mechanical structure, which does not require a servo motor drive, has a simple structure, works stably and reliably, has a low cost and a function of quickly adjusting the press edge distance.

[0031] The following is further described in detail through specific implementation methods:

[0032] The markings in the drawings of the specification include: lower mold base 1, fixed support 2, adjusting nut 3, screw 4, screw handle 5, adjusting bracket 6, left side plate 7, limit baffle 8, positioning hole 9, right side plate 10, and bearing support 11.

[0033] Embodiment 1

[0034] This embodiment describes a double bending tool, including a left tool and a right tool, which are symmetrically arranged on both sides of the lower mold base 1 of the bending machine. Figure 1 shown.

[0035] The structures of the left tooling and the right tooling are exactly the same. Figure 2 and Figure 3 The structural diagram of the left tooling is shown.

[0036] Taking the left tooling as an example, it includes a load-bearing component, a limit component and an adjustment component. The load-bearing component is used to bear the processed plate, the limit component is used to limit the positioning relationship between the processed plate and the bending machine mold, and the adjustment component is used to adjust the positioning accuracy of the limit component.

[0037] Specifically, the bearing assembly includes a fixed support 2 fixedly connected to the lower die base 1 of the bending machine, and a bearing support 11 slidably connected to the fixed support 2. Opposite side panels are provided on both sides of the upper part of the fixed support 2 to form a vertical recess, and the inner walls on both sides of the recess are provided with relative slide grooves. The lower part of the fixed support 2 is provided with three mounting holes distributed in a herringbone shape, the lower two mounting holes are used for the fixed connection between the fixed support 2 and the lower die base 1, and the upper mounting hole is used for the connection between the screw 4 and the lower die base 1. Corresponding herringbone-shaped mounting holes are also provided on the lower die base 1. Guide rails embedded in the slide grooves are provided on both sides of the bottom of the bearing support 11, and the bearing support 11 can move forward and backward along the slide grooves.

[0038] The limiting assembly is an L-shaped limiting baffle 8, including an upper vertical baffle and a lower horizontal base. The vertical baffle limits the plate in the horizontal direction. The horizontal base is provided with a transverse through hole for installing a positioning pin, and the top surface height of the horizontal base is the same as the height of the lower mold of the bending machine. The upper part of the bearing support 11 is provided with a raised left side plate 7 and a right side plate 10, and the left side plate 7, the right side plate 10 and the top surface of the bearing support 11 form a long strip groove to accommodate the limiting baffle 8, and the depth of the groove is lower than the height of the limiting baffle 8. The left side plate 7 and the right side plate 10 are respectively provided with corresponding multiple groups of positioning holes 9. The positions of the multiple groups of positioning holes 9 are determined according to different requirements of the center line of the edge pressing. In this embodiment, the number of positioning holes 9 is three groups. The limiting baffle 8 is connected to the left side plate 7 and the right side plate 10 respectively through positioning pins.

[0039] The adjustment assembly includes an inverted L-shaped adjustment bracket 6 and a screw 4. The adjustment bracket 6 includes an upper horizontal portion and a lower vertical portion. The top surface of the horizontal portion is in contact with the bottom surface of the bearing support 11 and is fixedly connected by bolts; the vertical portion is provided with an opening for the screw 4 to pass through, and the opening is provided with a thread. The length of the screw 4 is greater than the distance between the front end surface of the fixed support 2 and the front end surface of the bearing support 11, and a screw handle 5 is provided at the rear to facilitate the operator to rotate the screw 4. The screw 4 is provided with two adjustment nuts 3 on both sides of the opening, and the screw 4 and the adjustment bracket 6 can be locked from both sides. When the adjusting nut 3 is not locked, the adjusting bracket 6 can move forward and backward along the screw rod 4, driving the bearing support 11 to move forward and backward in the slide groove to adjust the relative position of the bearing support 11 and the lower mold base 1; when the adjusting nut 3 is locked, the bearing support 11 will maintain the relative position with the lower mold base 1 when locked. Since the limit baffle 8 is fixedly connected to the bearing support 11, the relative position of the limit baffle 8 and the lower mold base 1, the upper mold, and the lower mold is also determined.

[0040] In actual use, such as Figure 4 As shown, the limit baffle 8 is fixed by the positioning pin and the positioning hole of the designed edge pressing center line, the adjusting nut 3 is screwed out to adjust the position of the bearing support 11 forward and backward, and the actual spacing is measured with a vernier caliper for confirmation. The actual spacing measured here can be flexibly selected to reflect the spacing relationship between the limit baffle 8 and the lower mold base 1. When the adjustment reaches the preset accuracy, tighten the adjusting nut 3. Adjust the left and right tooling separately to ensure that the spacing between the limit baffles on both sides and the mold is the same, and to ensure that the edge pressing center line is completely aligned with the mold.

[0041] According to actual tests, the tooling provided by the present invention can ensure a calibration accuracy of 0.05mm, has a simple structure, is stable and reliable, does not require a servo motor drive, and has a low cost.

[0042] Embodiment 2

[0043] This embodiment describes the process flow of using the double bending tooling described in the first embodiment. Figure 5 As shown, the following steps are included:

[0044] S01. Install a positioning pin in the corresponding positioning hole of the bearing support on one side to fix the limit baffle;

[0045] S02, respectively unscrewing the adjusting nuts on both sides of the opening of the side adjustment bracket in the opposite direction of the adjustment bracket, so that the side screw can move back and forth in the opening; using a vernier caliper to measure the distance between the limit baffle and the edge of the lower mold of the bending machine, and adjusting the distance between the bearing support and the lower mold of the bending machine by adjusting the nuts until the preset distance is reached;

[0046] S03, screwing the adjusting nuts on both sides of the opening of the adjusting bracket on the side in the direction of the adjusting bracket respectively;

[0047] S04, repeat S01 to S03 for the bearing support on the other side;

[0048] S05. Place the plate to be processed and perform bending operation.

[0049] The above are only embodiments of the present invention. The invention is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Double bending tool, characterized by: The double bending tooling is fixedly connected to the lower die base of the bending machine, and includes a bearing assembly, a limiting assembly and an adjustment assembly. The bearing assembly is used to bear the processed plate, the limiting assembly is used to limit the positioning relationship between the processed plate and the bending machine die, and the adjustment assembly is used to adjust the positioning accuracy of the limiting assembly.

2. The double bending tool according to claim 1, characterized in that: The bearing assembly includes a fixed support fixedly connected to the lower mold base of the bending machine and a bearing support slidably connected to the fixed support. The upper two sides of the fixed support are provided with opposite side panels to form a vertical recess. The inner walls on both sides of the vertical recess are provided with sliding grooves. The bottom two sides of the bearing support are provided with guide rails embedded in the sliding grooves, and the bearing support can move forward and backward along the sliding grooves.

3. The double bending tool according to claim 2, characterized in that: The limit assembly is an L-shaped limit baffle, including an upper vertical baffle and a lower horizontal base, the horizontal base is provided with a transverse through hole, and the top surface height of the horizontal base is the same as the height of the lower mold of the bending machine; the upper part of the bearing support is provided with a raised left plate and a right plate, the left plate and the right plate are provided with relative positioning holes, and the limit baffle is connected to the left plate and the right plate respectively through positioning pins.

4. The double bending tool according to claim 3, characterized in that: The left side plate and the right side plate are provided with a plurality of groups of positioning holes.

5. The double bending tool according to claim 4, characterized in that: The calibration and adjustment component comprises an adjustment bracket and a screw rod. The adjustment bracket is fixedly connected to the bearing component. The screw rod is fixedly connected to the adjustment bracket and the bearing component respectively.

6. The double bending tool according to claim 5, characterized in that: The adjustment bracket is an inverted L-shape, including an upper horizontal portion and a lower vertical portion, the top surface of the horizontal portion is in contact with the bottom surface of the bearing support and is fixedly connected by bolts, and the vertical portion is provided with an opening for the screw to pass through; an adjustment handle is provided at the rear of the screw, and the length of the screw is greater than the distance between the front end surface of the fixed support and the front end surface of the bearing support; the screw is connected to the adjustment bracket through adjustment nuts on both sides of the opening, and the adjustment bracket can drive the bearing support to move forward and backward in the slide groove.

7. The double bending tool according to claim 6, characterized in that: The lower end of the fixed support is provided with three herringbone-shaped mounting holes, the two mounting holes at the lower part are used for connecting the fixed support with the lower mold base; and the one mounting hole at the upper part is used for connecting the screw rod with the lower mold base.

8. The double bending tool according to claim 7, characterized in that: The double bending tooling comprises a left tooling and a right tooling, which are symmetrically arranged on both sides of the lower die base of the bending machine.

9. Double bending process, characterized by: Using the double bending tool as claimed in claim 8 comprises the following steps: S01. Install a positioning pin in the corresponding positioning hole of the bearing support on one side to fix the limit baffle; S02, respectively unscrewing the adjusting nuts on both sides of the opening of the side adjustment bracket in the opposite direction of the adjustment bracket, so that the side screw can move back and forth in the opening; using a vernier caliper to measure the distance between the limit baffle and the edge of the lower mold of the bending machine, and adjusting the distance between the bearing support and the lower mold of the bending machine by adjusting the nuts until the preset distance is reached; S03, screwing the adjusting nuts on both sides of the opening of the adjusting bracket on the side toward the adjusting bracket to fix the adjusting bracket; S04, repeat S01 to S03 for the bearing support on the other side; S05. Place the plate to be processed and perform bending operation.

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