An integrated bending process and bending system for a circular-arc slot

Abstract

The application discloses an integrated bending process of a circular-arc groove strip, which is characterized by the following steps: preparing a straight conveying device, a cutting device, a bending device and a straight groove strip extending along a straight line, guiding and matching the straight groove strip on the straight conveying device, wherein the straight groove strip comprises horizontal strip plates extending along a length direction in a straight line, and the horizontal strip plates are integrally provided with upward straight flanges on both sides along a contour, and a straight strip groove is formed between the two straight flanges; the straight conveying device conveys one end of the straight groove strip in a direction gradually approaching the bending device, so that a section of the straight groove strip close to the bending device gradually reaches a predetermined position of the bending device; in the process of the application, two circular-arc groove strips with a circular center angle of 90 degrees can be formed in each bending cycle, and the production rhythm is almost doubled compared with the production rhythm of the prior art in which only one circular-arc groove strip with a circular center angle of 90 degrees can be produced in one bending cycle.

Description

Technical Field

[0001] This invention belongs to the field of bending technology. Background Technology

[0002] like Figure 1 As shown, the arc groove 41 structure with a central angle of exactly 90° in this case is widely used in the arc corners of various frame structures 40 such as door frames and inner frames of equipment panels. For sealing, aesthetic and other requirements, the sides of this arc groove 41 with a central angle of exactly 90° all have arc flanges 41b, thus forming an arc groove 41a.

[0003] In the processing equipment for this type of arc groove 41, the general practice is to bend several straight grooves one by one into this arc groove 41. Each bending process cycle can only produce one arc groove 41. Therefore, after each arc groove 41 is formed, it is necessary to reload the material, which affects the production cycle. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides an integrated bending process and bending system for arc grooves, which can effectively improve the production cycle.

[0005] Technical solution: To achieve the above objectives, the present invention provides an integral bending process for an arc groove strip, comprising the following steps:

[0006] Step 1: Prepare a linear conveying device, a cutting device, a bending device, and a linear groove extending in a straight line. Guide the linear groove onto the linear conveying device. The linear groove includes a horizontal strip extending in a straight line along its length. Both sides of the horizontal strip are integrally provided with upward-facing straight flanges along the contour, and a linear groove is formed between the two straight flanges.

[0007] Step 2: The linear conveying device conveys one end of the linear trough bar in a direction that gradually approaches the bending device, so that the section of the linear trough bar that is close to the bending device gradually reaches the predetermined position of the bending device.

[0008] As the section of the straight groove near the bending device gradually reaches the predetermined position of the bending device, the cutting device successively cuts the first cutting slit and the second cutting slit on the section of the straight groove near the bending device.

[0009] When the cutting device cuts the second cutting seam, it completely cuts off the straight groove, making the section of the straight groove near the bending device become an independent straight groove to be bent.

[0010] When the cutting device cuts the first cutting slit, it only cuts the two straight flanges on the straight groove bar, without cutting the horizontal strip; the first cutting slit is exactly at the midpoint of the length of the straight groove bar to be bent.

[0011] Step 3: The bending device bends the straight groove to be bent symmetrically upwards on both the left and right sides with the first cutting seam as the dividing line, so that the straight groove to be bent is finally bent into a semi-circular arc groove.

[0012] Step four: The built-in cutting unit of the bending device completely cuts off the first cutting seam of the semi-circular arc groove and forms a cutting seam, turning the semi-circular arc groove into two independent arc grooves.

[0013] Step 5: Remove the two independent arc groove strips, and then return to "Step 2" to prepare for the forming process of the next pair of arc groove strips.

[0014] Furthermore, in "Step Two", in addition to cutting out the first and second cutting seams, the cutting device also cuts out several auxiliary process cuts on the straight flange of the straight groove.

[0015] A bending system for an integral bending process of an arc groove includes a linear conveying device, a cutting device, a bending device, and a linear groove extending along a straight line; the cutting device is located between the linear conveying device and the bending device.

[0016] Furthermore, the linear conveying device includes several conveying units distributed along a linear array. Each conveying unit includes a roller support, a lower grooved roller, and an upper roller. The groove of the lower grooved roller supports the lower surface of the linear groove bar and constrains the two outer sides of the linear groove bar. The upper roller rolls and engages in the linear groove of the linear groove bar.

[0017] Furthermore, the bending device includes a downwardly extending fixed arm, with a semi-circular fixed constraint disk fixedly connected to the lower end of the fixed arm. The semi-circular fixed constraint disk has a downward-facing arc surface and its axis is perpendicular to the conveying direction of the conveying unit. The thickness of the semi-circular fixed constraint disk is consistent with the groove width in the straight groove. A semi-circular toothed disk is integrally provided on one side of the semi-circular fixed constraint disk, and an array of teeth (a) is provided along the outline of the semi-circular contour of the outer periphery of the semi-circular toothed disk. A bearing hole is provided through the axis of the integral structure formed by the semi-circular fixed constraint disk and the semi-circular toothed disk. A first central rotating shaft and a second central rotating shaft are respectively rotatably mounted at both ends of the bearing hole through bearings.

[0018] Furthermore, a first swing arm extending downwards is fixedly connected to the outer end of the first central rotating shaft. A first end shaft is vertically fixedly connected to the lower end of the first swing arm. A first rotating sleeve is rotatably mounted on the outer side of the first end shaft via a bearing. A first rocker arm is vertically fixedly connected to the outer wall of the first rotating sleeve. A first arc-shaped constraint strip is fixedly connected to the end of the first rocker arm. The arc axis of the first arc-shaped constraint strip coincides with the axis of the outer side of the first rotating sleeve. A first arc-shaped constraint groove is provided along the contour of the outer ring of the first arc-shaped constraint strip. A first transmission tooth is provided along the arc contour of the outer edge of the first arc-shaped constraint groove. One side of the first swing arm is fixedly connected to... One end of the first arc rack has its arc axis coincide with the axis of the first central rotating shaft; the other side of the first swing arm is vertically fixed with a first hydraulic telescopic device, the end of the first hydraulic telescopic rod of the first hydraulic telescopic device is fixedly connected with a first assist wheel base, and a first assist groove wheel is rotatably installed on one side of the first assist wheel base through a bearing; a first drive motor is fixedly installed on the side of the integrated structure formed by the semi-circular fixed constraint disk and the semi-circular gear disk near the first swing arm, the first drive motor is driven by a first drive gear, and the first drive gear meshes with the end of the first arc rack near the first swing arm.

[0019] Furthermore, a downwardly extending second swing arm is fixedly connected to the outer end of the second central rotating shaft. A second end shaft is vertically fixedly connected to the lower end of the second swing arm. A second rotating sleeve is rotatably mounted on the outer side of the second end shaft via a bearing. A second rocker arm is vertically fixedly connected to the outer wall of the second rotating sleeve. A second arcuate constraint strip is fixedly connected to the end of the second rocker arm. The arcuate axis of the second arcuate constraint strip coincides with the axis of the outer side of the second rotating sleeve. A second arcuate constraint groove is provided along the contour of the outer ring of the second arcuate constraint strip. A second transmission tooth is provided along the arcuate contour of the outer edge of the second arcuate constraint groove. One side of the second swing arm is fixedly connected to... One end of the second arc rack has its arc axis coincide with the axis of the second central rotating shaft; the other side of the second swing arm is vertically fixed with a second hydraulic telescopic device, the end of the second hydraulic telescopic rod of the second hydraulic telescopic device is fixedly connected with a second assist wheel base, and a second assist groove wheel is rotatably mounted on one side of the second assist wheel base through a bearing; a second drive motor is fixedly mounted on the side of the integrated structure formed by the semi-circular fixed constraint disk and the semi-circular gear disk near the second swing arm, the second drive motor is driven by a second drive gear, and the second drive gear meshes with the end of the second arc rack near the second swing arm.

[0020] Furthermore, from the axial perspective of the semi-circular toothed disc, the second arc rack is a left-right mirror image of the first arc rack, the first hydraulic expansion joint is a left-right mirror image of the second hydraulic expansion joint, and the first arc constraint bar is a left-right mirror image of the second arc constraint bar.

[0021] The first and second circular arc constraint bars are spliced ​​together in the initial state to form a semi-circular arc assembly; the first transmission tooth on the first circular arc constraint bar and the second transmission tooth on the second circular arc constraint bar both mesh with the a tooth array on the semi-circular tooth disk.

[0022] Furthermore, a vertical mounting chamber is provided in the middle of the integrated structure formed by the semi-circular fixed constraint disk and the semi-circular toothed disk. The lower end of the mounting chamber is connected to a downward through-cutting guide channel, which extends radially along the semi-circular fixed constraint disk. A downward-facing hydraulic expansion joint is fixedly installed inside the mounting chamber. The lower end of the hydraulic expansion rod of the hydraulic expansion joint is fixedly connected to a downward-facing cutter. The cutter is parallel to the guide channel and is engaged in the cutter guide channel. In the initial state, the lower end of the cutter is higher than the lower end of the semi-circular fixed constraint disk.

[0023] Beneficial effects: In the process of the present invention, each bending cycle can form two arc grooves with a central angle of exactly 90°, which almost doubles the production cycle compared to the existing bending process where only one arc groove with a central angle of exactly 90° can be produced per bending cycle.

[0024] In the equipment system, taking left-side bending as an example, under the strict constraint of the meshing transmission between the a-tooth array and the first transmission tooth, the first arc constraint bar gradually and strictly rolls and bends the left section of the straight groove bar to be bent onto the arc surface of the left half of the semi-circular fixed constraint plate. During this process, the first assisting groove wheel applies an upward thrust to the left section of the straight groove bar to be bent. This upward thrust is transmitted to the rolling position of the first arc constraint bar in the form of a bending moment through the left section of the straight groove bar to be bent. This causes the rolling position of the left section of the straight groove bar to be bent to be subjected to bending stress from the first assisting groove wheel. This, in turn, helps to promote the upward bending of the left section of the straight groove bar to be bent at the rolling position of the first arc constraint bar in the initial stage of bending, making the process of the first arc constraint bar gradually rolling and bending the left section of the straight groove bar to be bent onto the arc surface of the left half of the semi-circular fixed constraint plate smoother. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the formed arc groove structure;

[0026] Figure 2 This is a process diagram for "Step One" to "Step Five";

[0027] Figure 3 This is a schematic diagram of the overall process of this solution;

[0028] Figure 4 for Figure 3 A schematic diagram of the local structure at marker 56;

[0029] Figure 5 This is a schematic diagram of an explosion involving a bending device.

[0030] Figure 6 This is a three-dimensional schematic diagram of the bending device;

[0031] Figure 7 This is a cross-sectional view of the bending device;

[0032] Figure 8 for Figure 7 An enlarged view of the mark at 80;

[0033] Figure 9 This is a schematic diagram of the bending device at the end of step three;

[0034] Figure 10 for Figure 6 Another perspective illustration. Detailed Implementation

[0035] The invention will now be further described with reference to the accompanying drawings.

[0036] like Figure 2 The integral bending process of the arc groove shown mainly includes the following steps:

[0037] Step 1: Prepare a linear conveying device 102, a cutting device 57, a bending device 103, and a linear groove 39 extending in a straight line. Guide and fit the linear groove 39 onto the linear conveying device 102. The linear groove 39 includes a horizontal strip 41aa extending in a straight line along its length. Both sides of the horizontal strip 41aa are integrally provided with upward-facing straight flanges 41bb along the contour. A linear groove 100 is formed between the two straight flanges 41bb.

[0038] Step 2: The linear conveying device 102 conveys one end of the linear trough 39 in a direction that gradually approaches the bending device 103, so that the section of the linear trough 39 that is close to the bending device 103 gradually reaches the predetermined position of the bending device 103.

[0039] As the section of the straight groove 39 near the bending device 103 gradually reaches the predetermined position of the bending device 103, the cutting device 57 successively cuts the first cutting slit 50 and the second cutting slit 51 on the section of the straight groove 39 near the bending device 103.

[0040] When the cutting device 57 cuts the second cutting seam 51, it completely cuts off the straight groove 39, so that the section of the straight groove 39 near the bending device becomes an independent straight groove 39a to be bent.

[0041] When the cutting device 57 cuts the first cutting seam 50, it only cuts the two straight flanges 41bb on the straight groove 39, without cutting the horizontal strip 41aa; the first cutting seam 50 is exactly at the midpoint of the length of the straight groove 39a to be bent.

[0042] Step 3: The bending device 103 bends the straight groove 39a to be bent symmetrically upwards on the left and right sides with the first cutting seam 50 as the dividing line, so that the straight groove 39a to be bent is finally bent into a semi-circular groove 60.

[0043] Step four, the built-in cutting unit of the bending device 103 completely cuts off the first cutting seam 50 of the semi-circular arc groove 60 and forms a cutting seam 61, so that the semi-circular arc groove 60 becomes two independent arc grooves 41.

[0044] Step 5: Remove the two independent arc groove strips 41, and then return to "Step 2" to prepare for the forming process of the next pair of arc groove strips 41.

[0045] In the process of "Step Two" above, in addition to cutting out the first cutting slit 50 and the second cutting slit 51, the cutting device 57 also cuts out a number of auxiliary process cuts 108 on the straight flange 41bb of the straight groove 39. These auxiliary process cuts 108 can make the bending process of "Step Three" smoother.

[0046] The specific bending process system based on the above process design is as follows:

[0047] like Figures 1 to 10 The bending system of the integral bending process of the arc groove shown is as follows: Figure 3 As shown, it includes a linear conveying device 102, a cutting device 57, a bending device 103, and a linear groove 39 extending along a straight line; the cutting device 57 is located between the linear conveying device 102 and the bending device 103; the linear conveying device 102 includes a plurality of conveying units 56 distributed along a straight line array, and the cutting device 57 in this case is mounted on a displacement device.

[0048] like Figure 4 As shown, the conveying unit 56 includes a fixed roller support 52, a lower grooved roller 53, and an upper roller 54. The shafts at both ends of the lower grooved roller 53 and the upper roller 54 are rotatably mounted on the roller support 52 via bearings. The groove of the lower grooved roller 53 supports the lower surface of the straight groove 39 and constrains the two outer sides of the straight groove 39. The upper roller 54 rolls in the straight groove 100 of the straight groove 39. It also includes a roller drive device that can drive the lower grooved roller 53 and the upper roller 54 to rotate actively.

[0049] like Figure 5 , 6As shown, the bending device 103 includes a downwardly extending fixed arm 1. The lower end of the fixed arm 1 is fixedly connected to a semi-circular fixed constraint disk 3 with its arc surface facing downward and its axis perpendicular to the conveying direction of the conveying unit 56. The thickness of the semi-circular fixed constraint disk 3 is consistent with the groove width in the straight groove 39. A semi-circular toothed disk 31 is integrally provided on one side of the semi-circular fixed constraint disk 3. A tooth array 2 is provided along the outline of the semi-circular contour of the outer periphery of the semi-circular toothed disk 31. A bearing hole 30 is provided through the axis of the integral structure formed by the semi-circular fixed constraint disk 3 and the semi-circular toothed disk 31. The two ends of the bearing hole 30 are respectively rotatably mounted with a first central rotating shaft 5 and a second central rotating shaft 5a through bearings.

[0050] A first swing arm 6 extending downwards is fixedly connected to the outer end of the first central rotating shaft 5. A first end shaft 11 is vertically fixedly connected to the lower end of the first swing arm 6. A first rotating sleeve 19 is rotatably mounted on the outer side of the first end shaft 11 via a bearing. A first rocker arm 18 is vertically fixedly connected to the outer wall of the first rotating sleeve 19. A first arc-shaped constraint strip 15 is fixedly connected to the end of the first rocker arm 18. The arc axis of the first arc-shaped constraint strip 15 coincides with the outer axis of the first rotating sleeve 19. A first arc-shaped constraint groove 17 is provided along the contour of the outer ring of the first arc-shaped constraint strip 15. The groove width of the first arc-shaped constraint groove 17 is the same as the overall width of the straight groove 39. A first transmission tooth 16 is provided along the arc contour of the outer edge of the first arc-shaped constraint groove 17. A first arc-shaped rack 1 is fixedly connected to one side of the first swing arm 6. At one end of 2, the arc axis of the first arc rack 12 coincides with the axis of the first central rotating shaft 5; the other side of the first swing arm 6 is vertically fixed with a first hydraulic telescopic device 7, the end of the first hydraulic telescopic rod 8 of the first hydraulic telescopic device 7 is fixedly connected to a first assist wheel base 37, and a first assist groove wheel 9 is rotatably installed on one side of the first assist wheel base 37 through a bearing; in the initial state, the first assist groove wheel 9 has the same structure as the lower groove wheel 53 on the conveying unit 56 and is at the same height; the integrated structure formed by the semi-circular fixed constraint disk 3 and the semi-circular gear disk 31 is fixedly installed with a first drive motor 4 on the side near the first swing arm 6, the first drive motor 4 is driven and connected to a first drive gear 13, and the first drive gear 13 meshes with the end of the first arc rack 12 near the first swing arm 6.

[0051] A second swing arm 6a extending downwards is fixedly connected to the outer end of the second central rotating shaft 5a. A second end shaft 11a is vertically fixedly connected to the lower end of the second swing arm 6a. A second rotating sleeve 19a is rotatably mounted on the outer side of the second end shaft 11a via a bearing. A second rocker arm 18a is vertically fixedly connected to the outer wall of the second rotating sleeve 19a. A second arc-shaped constraint strip 15a is fixedly connected to the end of the second rocker arm 18a. The arc axis of the second arc-shaped constraint strip 15a coincides with the outer axis of the second rotating sleeve 19a. A second arc-shaped constraint groove 17a is provided along the contour of the outer ring of the second arc-shaped constraint strip 15a. The groove width of the second arc-shaped constraint groove 17a is consistent with the overall width of the straight groove 39. A second transmission gear 16a is provided along the arc contour of the outer edge of the second arc-shaped constraint groove 17a. A second arc-shaped rack 1 is fixedly connected to one side of the second swing arm 6a. At one end of 2a, the arc axis of the second arc rack 12a coincides with the axis of the second central rotating shaft 5a; the other side of the second swing arm 6a is vertically fixed with a second hydraulic telescopic device 7a, and the end of the second hydraulic telescopic rod 8a of the second hydraulic telescopic device 7a is fixedly connected to a second assist wheel base 37a. A second assist groove wheel 9a is rotatably mounted on one side of the second assist wheel base 37a through a bearing; in the initial state, the second assist groove wheel 9a has the same structure as the lower groove wheel 53 on the conveying unit 56 and is at the same height; the integrated structure formed by the semi-circular fixed constraint disk 3 and the semi-circular gear disk 31 is fixedly mounted with a second drive motor 4a on the side near the second swing arm 6a, and the second drive motor 4a is driven by a second drive gear 13a, which meshes with the end of the second arc rack 12a near the second swing arm 6a.

[0052] From the axial perspective of the semi-circular toothed disc 31, the second circular arc rack 12a is a left-right mirror image of the first circular arc rack 12, the first hydraulic expansion joint 7 is a left-right mirror image of the second hydraulic expansion joint 7a, and the first circular arc constraint strip 15 is a left-right mirror image of the second circular arc constraint strip 15a.

[0053] The first arc constraint strip 15 and the second arc constraint strip 15a are spliced ​​together in the initial state to form a semi-circular arc assembly 140; the first transmission tooth 16 on the first arc constraint strip 15 and the second transmission tooth 16a on the second arc constraint strip 15a both mesh with the tooth array 2 on the semi-circular tooth disk 31.

[0054] A vertical mounting chamber 32 is provided in the middle of the integrated structure formed by the semi-circular fixed constraint disk 3 and the semi-circular toothed disk 31. The lower end of the mounting chamber 32 is connected to a downward through-cutting guide channel 36, which extends radially along the semi-circular fixed constraint disk 3. A downward-facing hydraulic telescopic device 33 is fixedly installed inside the mounting chamber 32. The lower end of the hydraulic telescopic rod 34 of the hydraulic telescopic device 33 is fixedly connected to a downward-facing cutting blade 35. The cutting blade 35 is parallel to the guide and fits in the cutting blade guide channel 36. In the initial state, the lower end of the cutting blade 35 is higher than the lower end of the semi-circular fixed constraint disk 3.

[0055] Detailed process of combining bending process system:

[0056] Step 1: Prepare a linear conveyor 102, a cutting device 57, a bending device 103, and a linear groove 39 extending along a straight line, and guide the linear groove 39 onto the linear conveyor 102; when the linear groove 39 is guided onto the linear conveyor 102, the grooves of the lower groove wheels 53 of each conveying unit 56 support the lower surface of the linear groove 39 and constrain the two outer sides of the linear groove 39, and the rollers 54 of each conveying unit 56 roll and engage in the linear groove 100 of the linear groove 39;

[0057] Step 2: The roller drive device drives the lower groove wheel 53 or upper roller 54 of each conveying unit 56 to rotate actively, thereby causing one end of the straight groove bar 39 to be conveyed in a direction that gradually approaches the bending device 103. This causes one end of the straight groove bar 39 to pass between the lower side of the semicircular fixed constraint disk 3 and the upper side of the semicircular arc assembly 140 along the conveying direction, and to continue to be conveyed along the conveying direction until a section of the straight groove bar 39 close to the bending device 103 gradually reaches the predetermined position of the bending device 103.

[0058] As the section of the straight groove 39 near the bending device 103 gradually reaches the predetermined position of the bending device 103, the cutting device 57 successively cuts the first cutting slit 50 and the second cutting slit 51 on the section of the straight groove 39 near the bending device 103.

[0059] When the cutting device 57 cuts the second cutting seam 51, it completely cuts off the straight groove 39, making the section of the straight groove 39 near the bending device become an independent straight groove 39a to be bent.

[0060] When the cutting device 57 cuts the first cutting seam 50, it only cuts the two straight flanges 41bb on the straight groove 39, without cutting the horizontal strip 41aa; the first cutting seam 50 is exactly at the midpoint of the length direction of the straight groove 39a to be bent.

[0061] At this point, the first cutting seam 50 of the straight groove strip 39a to be bent is just movably clamped between the lower side of the semi-circular fixed constraint plate 3 and the upper side of the semi-circular arc assembly 140. The groove of the first assisting groove wheel 9 and the groove of the second assisting groove wheel 9a respectively support and constrain the lower surfaces and both sides of the straight groove strip 39a to be bent.

[0062] In order to avoid motion interference during the bending process in the next step, the roller drive device drives the lower groove wheel 53 or the upper roller 54 of each conveying unit 56 to rotate actively in the opposite direction by a certain angle, thereby causing one end of the remaining straight groove bar 39 to retract a certain length in the opposite direction of conveying, so that the ends of the remaining straight groove bar 39 and the straight groove bar 39a to be bent are separated by a certain distance.

[0063] Step 3: The first drive motor 4 and the second drive motor 4a drive the first drive gear 13 and the second drive gear 13a to rotate along their respective axes, thereby causing the first swing arm 6 to swing clockwise upward around the first central rotating shaft 5 and the second swing arm 6a to swing counterclockwise upward around the second central rotating shaft 5a.

[0064] As the first swing arm 6 swings clockwise upward around the first central axis 5, it drives the first arc constraint bar 15 to gradually and strictly roll and bend the left section of the straight groove bar 39a to be bent onto the arc surface of the left half of the semicircular fixed constraint plate 3 under the strict constraint of the meshing transmission between the a-tooth array 2 and the first transmission tooth 16. During the clockwise upward swing of the first swing arm 6 around the first central axis 5, the first assist groove wheel 9 applies an upward thrust to the left section of the straight groove bar 39a to be bent. This upward thrust is transmitted to the rolling position of the first arc constraint bar 15 in the form of bending moment through the left section of the straight groove bar 39a to be bent. The first arc constraint strip 15 is positioned such that the left section of the straight groove strip 39a to be bent is subjected to bending stress from the first assist groove wheel 9 at the rolling position of the first arc constraint strip 15. This assists the left section of the straight groove strip 39a to be bent to be bent upward at the rolling position of the first arc constraint strip 15 in the initial stage of bending, making the process of the first arc constraint strip 15 gradually rolling and bending the left section of the straight groove strip 39a to be bent on the left half of the arc surface of the semicircular fixed constraint plate 3 smoother. In the above process, the assist strength of the first assist groove wheel 9 can also be controlled by adaptively controlling the extension and retraction of the first hydraulic expansion joint 7.

[0065] During the counterclockwise upward swing of the second swing arm 6a around the second central rotating shaft 5a, the second arc constraint bar 15a, under the strict constraint of the meshing transmission between the tooth array 2 and the second transmission tooth 16a, gradually and strictly rolls and bends the right section of the straight groove bar 39a to be bent onto the right half of the arc surface of the semi-circular fixed constraint disk 3. During the counterclockwise upward swing of the second swing arm 6a around the second central rotating shaft 5a, the second assisting groove wheel 9a applies an upward thrust to the right section of the straight groove bar 39a to be bent. This upward thrust is transmitted to the rolling of the second arc constraint bar 15a in the form of a bending moment through the right section of the straight groove bar 39a to be bent. The position of the second auxiliary groove wheel 9a causes the right section of the straight groove 39a to be bent to be subjected to bending stress from the second auxiliary groove wheel 9a at the rolling position of the second arc constraint bar 15a. This helps to promote the upward bending of the right section of the straight groove 39a at the rolling position of the second arc constraint bar 15a in the initial stage of bending, making the process of the second arc constraint bar 15a gradually rolling and bending the right section of the straight groove 39a on the right half of the arc surface of the semicircular fixed constraint plate 3 smoother. In the above process, the auxiliary strength of the second auxiliary groove wheel 9a can also be controlled by adaptively controlling the extension and retraction of the second hydraulic expansion joint 7a.

[0066] Thus, the bending device 103 symmetrically bends the two sections of the straight groove 39a to be bent upwards with the first cutting seam 50 as the dividing line, and finally bends the straight groove 39a to be bent into a semi-circular groove 60.

[0067] Step four: The first drive motor 4 and the second drive motor 4a drive the first drive gear 13 and the second drive gear 13a to rotate in the opposite direction to "Step three" along their respective axes, so that the first arc constraint strip 15 and the second arc constraint strip 15a return to the initial state of "Step three"; at this time, the semi-circular arc groove strip 60 that has been formed is still attached to the semi-circular outer circumferential surface of the semi-circular fixed constraint plate 3; at this time, the hydraulic telescopic device 33 is extended, so that the cutter 35 cuts the first cutting seam 50 of the semi-circular arc groove strip 60 completely along the cutter guide channel 36, and forms a cutting seam 61, so that the semi-circular arc groove strip 60 becomes two independent arc groove strips 41;

[0068] Step 5: Remove the two independent arc groove strips 41, and then return to "Step 2" to prepare for the forming process of the next pair of arc groove strips 41.

[0069] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An integral bending process for an arc groove, characterized in that: Includes the following steps: Step 1: Prepare a linear conveying device (102), a cutting device (57), a bending device (103), and a linear groove (39) extending in a straight line. Guide the linear groove (39) onto the linear conveying device (102). The linear groove (39) includes a horizontal strip (41aa) extending in a straight line along the length direction. Both sides of the horizontal strip (41aa) are integrally provided with upward-facing straight flanges (41bb) along the contour. A linear groove (100) is formed between the two straight flanges (41bb). Step 2: The linear conveying device (102) conveys one end of the linear groove (39) in a direction that gradually approaches the bending device (103), so that the section of the linear groove (39) that is close to the bending device (103) gradually reaches the predetermined position of the bending device (103). As the section of the straight groove (39) near the bending device (103) gradually reaches the predetermined position of the bending device (103), the cutting device (57) successively cuts the first cutting slit (50) and the second cutting slit (51) on the section of the straight groove (39) near the bending device (103). When the cutting device (57) cuts the second cutting seam (51), it completely cuts off the straight groove (39), making the section of the straight groove (39) near the bending device become an independent straight groove (39a) to be bent. When the cutting device (57) cuts the first cutting seam (50), it only cuts the two straight flanges (41bb) on the straight groove (39) and does not cut the horizontal strip (41aa); the first cutting seam (50) is exactly at the midpoint of the straight groove (39a) along the length direction to be bent; Step 3: The bending device (103) bends the straight groove (39a) to be bent symmetrically upwards on the left and right sides with the first cutting seam (50) as the dividing line, so that the straight groove (39a) to be bent is finally bent into a semi-circular groove (60). Step four, the built-in cutting unit of the bending device (103) completely cuts off the first cutting seam (50) of the semi-circular arc groove (60) and forms a cutting seam (61), so that the semi-circular arc groove (60) becomes two independent arc grooves (41). Step 5: Remove the two independent arc groove strips (41) and then return to "Step 2" to prepare for the forming process of the next pair of arc groove strips (41).

2. The integral bending process for an arc groove strip according to claim 1, characterized in that: In the process of "Step Two", in addition to cutting out the first cutting slit (50) and the second cutting slit (51), the cutting device (57) also cuts out a number of auxiliary process cuts (108) on the straight flange (41bb) of the straight groove (39).

3. A bending system for an integral bending process of an arc groove, characterized in that: It includes a linear conveyor (102), a cutting device (57), a bending device (103), and a linear groove (39) extending in a straight line; the cutting device (57) is located between the linear conveyor (102) and the bending device (103); The bending device (103) includes a downwardly extending fixed arm (1), and a semi-circular fixed constraint disk (3) with its arc surface facing downward and its axis perpendicular to the conveying direction of the conveying unit (56) is fixedly connected to the lower end of the fixed arm (1). The thickness of the semi-circular fixed constraint disk (3) is consistent with the groove width in the straight groove (39). A semi-circular toothed disk (31) is integrally provided on one side of the semi-circular fixed constraint disk (3), and an a-tooth array (2) is provided along the outline of the semi-circular contour of the outer periphery of the semi-circular toothed disk (31). A bearing hole (30) is provided through the axis of the integral structure formed by the semi-circular fixed constraint disk (3) and the semi-circular toothed disk (31). A first central rotating shaft (5) and a second central rotating shaft (5a) are respectively rotatably installed at both ends of the bearing hole (30) through bearings. The first central rotating shaft (5) is fixedly connected to the outer end of a downwardly extending first swing arm (6). The lower end of the first swing arm (6) is vertically fixedly connected to a first end shaft (11). A first rotating sleeve (19) is rotatably mounted on the outer side of the first end shaft (11) via a bearing. A first rocker arm (18) is vertically fixedly connected to the outer wall of the first rotating sleeve (19). A first arc constraint strip (15) is fixedly connected to the end of the first rocker arm (18). The arc axis of the first arc constraint strip (15) coincides with the axis outside the first rotating sleeve (19). A first arc constraint groove (17) is provided along the contour of the outer ring of the first arc constraint strip (15). A first transmission tooth (16) is provided along the arc contour of the edge of the outer ring of the first arc constraint groove (17). One side of the first swing arm (6) is fixedly connected to One end of the first arc rack (12) is connected to the first arc rack (12), and the arc axis of the first arc rack (12) coincides with the axis of the first central rotating shaft (5); the other side of the first swing arm (6) is vertically fixed with the first hydraulic telescopic device (7), and the end of the first hydraulic telescopic rod (8) of the first hydraulic telescopic device (7) is fixedly connected with the first assist wheel base, and the first assist groove wheel (9) is rotatably installed on one side of the first assist wheel base through the bearing; the first drive motor (4) is fixedly installed on the side of the integrated structure formed by the semi-circular fixed constraint disk (3) and the semi-circular gear disk (31) near the first swing arm (6), and the first drive motor (4) is connected to the first drive gear (13), and the first drive gear (13) meshes with the end of the first arc rack (12) near the first swing arm (6); A second central rotating shaft (5a) is fixedly connected to a downwardly extending second swing arm (6a) at its outer end. A second end shaft (11a) is vertically fixedly connected to the lower end of the second swing arm (6a). A second rotating sleeve (19a) is rotatably mounted on the outer side of the second end shaft (11a) via a bearing. A second rocker arm (18a) is vertically fixedly connected to the outer wall of the second rotating sleeve (19a). A second arc-shaped constraint strip (15a) is fixedly connected to the end of the second rocker arm (18a). The arc axis of the second arc-shaped constraint strip (15a) coincides with the axis outside the second rotating sleeve (19a). A second arc-shaped constraint groove (17a) is provided along the contour of the outer ring of the second arc-shaped constraint strip (15a). A second transmission tooth (16a) is provided along the arc contour of the edge of the outer ring of the second arc-shaped constraint groove (17a). A second arc-shaped constraint groove (17a) is fixedly connected to one side of the second swing arm (6a). At one end of the arc rack (12a), the arc axis of the second arc rack (12a) coincides with the axis of the second central rotating shaft (5a); on the other side of the second swing arm (6a), a second hydraulic telescopic device (7a) is vertically fixed, and the end of the second hydraulic telescopic rod (8a) of the second hydraulic telescopic device (7a) is fixedly connected to a second assist wheel base (37a). On one side of the second assist wheel base (37a), a second assist groove wheel (9a) is rotatably installed through a bearing; a second drive motor (4a) is fixedly installed on the side of the integrated structure formed by the semi-circular fixed constraint disk (3) and the semi-circular gear disk (31) near the second swing arm (6a), and the second drive motor (4a) is connected to a second drive gear (13a). The second drive gear (13a) meshes with the end of the second arc rack (12a) near the second swing arm (6a); From the axial perspective of the semi-circular toothed disc (31), the second circular arc rack (12a) is a left-right mirror image of the first circular arc rack (12), the first hydraulic expansion joint (7) is a left-right mirror image of the second hydraulic expansion joint (7a), and the first circular arc constraint bar (15) is a left-right mirror image of the second circular arc constraint bar (15a). The first circular arc constraint strip (15) and the second circular arc constraint strip (15a) are spliced ​​together in the initial state to form a semi-circular arc assembly (140); the first transmission tooth (16) on the first circular arc constraint strip (15) and the second transmission tooth (16a) on the second circular arc constraint strip (15a) both mesh with the a tooth array (2) on the semi-circular tooth disk (31).

4. The bending system for an integral bending process of an arc groove strip according to claim 3, characterized in that: The linear conveying device (102) includes several conveying units (56) distributed along a linear array. Each conveying unit (56) includes a roller support (52), a lower grooved roller (53), and an upper roller (54). The groove of the lower grooved roller (53) supports the lower surface of the linear groove (39) upward and constrains the two outer sides of the linear groove (39). The upper roller (54) rolls in the linear groove (100) of the linear groove (39).

5. The bending system for an integral bending process of an arc groove according to claim 4, characterized in that: A vertical mounting chamber (32) is provided in the middle of the integrated structure formed by the semicircular fixed constraint disk (3) and the semicircular toothed disk (31). The lower end of the mounting chamber (32) is connected to a downward through-cutting guide channel (36), which extends radially along the semicircular fixed constraint disk (3). A downward-facing hydraulic telescopic device (33) is fixedly installed inside the mounting chamber (32). The lower end of the hydraulic telescopic rod (34) of the hydraulic telescopic device (33) is fixedly connected to a downward-facing cutter (35). The cutter (35) is parallel to the guide and fits in the cutter guide channel (36). In the initial state, the lower end of the cutter (35) is higher than the lower end of the semicircular fixed constraint disk (3).

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