A brush bar bending device

Abstract

The application relates to a brush strip bending device and relates to the technical field of brush strips. The device comprises a working frame, a concave die for horizontally supporting a brush strip is fixed on the working frame, a convex die is arranged directly above the concave die, the convex die is driven to move up and down by a driving piece, a limiting assembly is connected to the working frame through a moving assembly, the limiting assembly is used for limiting the brush strip between the concave die and the convex die, the moving assembly moves along the horizontal direction on the working frame, the limiting assembly is arranged on the moving assembly, and when the moving assembly is started, the limiting assembly drives the brush strip to move towards the direction close to or far away from the central axis of the concave die. The application has the effect that the brush strip is bent at multiple points for multiple times, so that the accuracy of the final bending degree of the brush strip is high.

Description

Technical Field

[0001] This application relates to the field of brush strip processing, and in particular to a brush strip bending device. Background Technology

[0002] Depending on the application scenario, pre-shaped semi-finished brush strips usually need to be bent to achieve the required shape. Among them, the devices on the market used to bend workpieces such as plates or rods can bend brush strips.

[0003] In related technologies, Chinese patent CN211191535U discloses a bending device, including an upward moving block and a downward moving block. The upward moving block is located directly above the downward moving block and has a fixed punch. The upward moving block can drive the punch to move in the direction of the downward moving block. Two rotating plates are rotatably connected to the top wall of the downward moving block. The two rotating plates are symmetrical about the central axis of the punch. An elastic element is also provided between the rotating plates and the downward moving block. In the initial state, under the action of the elastic element, the two rotating plates are arranged side by side in the horizontal direction. In use, the workpiece is placed on the rotating plates, and then the upward moving block is moved down, driving the punch to press the workpiece on the rotating plates downward, so that the workpiece on the rotating plates is bent and formed at the pressing point, and the two rotating plates can rotate towards each other under the pressure of the workpiece.

[0004] The above operation involves a single point of the workpiece being extruded and formed in one go. However, since the brush strip is made of metal, the high ductility of the metal material means that after bending to the required angle once, the deformation will slightly recover when the pressure is removed. This results in a lower accuracy in the final angle of the brush strip bending, which needs to be improved. Summary of the Invention

[0005] In order to improve the accuracy of the final bending degree caused by bending the brush strip at a single point in a single operation, this application provides a brush strip bending device.

[0006] The brush strip bending device provided in this application adopts the following technical solution:

[0007] A brush strip bending device for bending brush strips, comprising:

[0008] Work rack;

[0009] The die is fixed on the work frame;

[0010] A punch is disposed on the work frame and located on one side of the die. The punch is driven by a drive member and can move on the work frame toward or away from the die. A bending area for placing the brush strip is formed between the punch and the die.

[0011] A moving assembly is slidingly connected to the workbench and moves along a direction perpendicular to the center axis of the female die;

[0012] A limiting assembly is arranged on the moving assembly, and the moving assembly is used to drive the limiting assembly to move the brush bar towards or away from the center axis of the female die.

[0013] By adopting the above technical scheme, when in use, the brush bar is placed between the female die and the male die, and then the limiting assembly is started to abut against the end of the brush bar, so as to adjust the position of the brush bar relative to the female die. At this time, the center of the brush bar deviates from the center axis of the male die. Then the driving member is started to drive the male die to move to extrude the brush bar. The female die and the male die cooperate to realize the first extrusion forming of the brush bar. At this time, the bending degree of the brush bar has approached the required standard, but the brush bar made of metal material will slightly recover the deformation, so that the bending degree cannot meet the standard, and the position of the bending center point of the brush bar is not correct.

[0014] After that, the moving assembly is started to drive the limiting assembly to move in a direction perpendicular to the center axis of the male die, and at the same time, the brush bar translates on the male die until the center of the brush bar is located on the center axis of the male die. Then the driving member is started again to realize the second extrusion forming of the brush bar, so as to repair the small deformation after the first extrusion forming and adjust the position of the bending point of the brush bar. The above-mentioned extrusion forming at two different extrusion points of the brush bar, i.e. the first extrusion makes the bending degree of the brush bar basically meet the requirements, and the second extrusion repairs the bending center point of the brush bar and slightly adjusts the bending degree, so that the accuracy of the final bending degree of the brush bar is high.

[0015] Optionally, the moving assembly comprises:

[0016] A support platform is slidingly connected to the workbench, the support platform is located below the female die and the male die, the male die can move on the upper surface of the support platform, and the bending area is located on the support platform;

[0017] A pushing cylinder is arranged on the workbench, the output end of the pushing cylinder is fixedly connected with the support platform, and the pushing cylinder is used to drive the support platform to move towards or away from the center axis of the female die.

[0018] By adopting the technical scheme, the brush strip is placed on the support platform and between the concave die and the convex die, then the limiting assembly is started to change the position of the brush strip relative to the central axis of the concave die, then the driving member is started to move the convex die on the upper surface of the support platform in the direction close to the concave die until the convex die and the concave die extrude the brush strip to realize eccentric bending of the brush strip. After the driving member is used to reset the convex die, the brush strip loses the extrusion force, i.e. is placed on the support platform, at this time the advancing cylinder is started to move the support platform in the direction perpendicular to the central axis of the concave die to drive the brush strip to move, so that the center point of the brush strip moves to the central axis of the concave die, then the driving member is started again to realize secondary extrusion forming of the brush strip by the convex die and the concave die.

[0019] Optionally, the limiting assembly comprises:

[0020] The positioning cylinder is fixed on the support platform.

[0021] The positioning block is fixed on the output end of the positioning cylinder and is located on the support platform, and the positioning block can abut against the brush strip and is driven by the positioning cylinder to move in the direction close to or away from the central axis of the concave die.

[0022] By adopting the technical scheme, when the brush strip is placed on the support platform and between the convex die and the concave die, then the positioning cylinder is started to drive the positioning block to move between the convex die and the concave die and abut against the end of the brush strip, so as to push the brush strip to move in the direction perpendicular to the central axis of the concave die, so that the center point of the brush strip deviates from the central axis of the concave die, then the positioning block is reset to make the positioning block deviate from the driving between the convex die and the concave die, so that the positioning block does not interfere with the movement of the convex die.

[0023] Optionally, the method further comprises:

[0024] The conveying belt is horizontally arranged above the working frame, and the end of the moving direction of the conveying belt is directly above the bending area.

[0025] The abutment plate is located at the end of the moving direction of the conveying belt, and the abutment plate can abut against the conveying belt to limit the movement of the conveying belt, and the abutment plate is driven by the blocking cylinder, and the blocking cylinder is fixedly connected with the working frame.

[0026] The blocking rod is fixed above the conveying belt by the support, and the distance from the blocking rod to the upper surface of the conveying belt is equal to the height of the brush, and the blocking rod is used to control the passing of the single brush strip.

[0027] By adopting the technical scheme, when in use, a plurality of brush strips are placed on the conveying belt, the gear position cylinder is started, and the distance between the abutment plate and the conveying belt is sufficient for the brush strips to move, so that the conveying belt can move and drive the brush strips on the conveying belt to move towards the workbench. When the brush strips move to the blocking rod, the brush strips need to pass under the blocking rod at this time, and the distance from the blocking rod to the upper surface of the conveying belt is equal to the thickness of a brush strip. Therefore, the blocking rod screens the brush strips, so that a single brush strip passes through the blocking rod and falls between the convex die and the concave die from the end of the conveying belt through the abutment plate and the conveying belt. At this time, the gear position cylinder is started, so that the abutment plate abuts against the conveying belt and extrudes the conveying belt, thereby limiting the rotation of the conveying belt, so that no extra brush strips will fall from the conveying belt, and thus only one brush strip will be bent between the convex die and the concave die each time, realizing automatic feeding of the brush strips.

[0028] Optionally, the limiting assembly comprises:

[0029] The rotating gear is horizontally arranged and rotationally connected to the moving assembly;

[0030] The two rotating racks are slidingly connected to the moving assembly, and are arranged along the horizontal direction and move along a direction perpendicular to the central axis of the concave die. The two rotating racks are centrally symmetric with the center of the rotating gear as the center, and both of the rotating racks are engaged with the rotating gear.

[0031] The two limiting plates are respectively fixed on the corresponding rotating racks, and the two limiting plates are axially symmetric with the central axis of the rotating gear as the axis. The two limiting plates are respectively located at two ends of the bending area.

[0032] By adopting the technical scheme, in the initial state, the center of the rotating gear is offset from the central axis of the convex die. When the brush strip is placed on the concave die, the rotating gear is driven to rotate, so that the two rotating racks drive the corresponding limiting plates to move towards the rotating gear at the same time until the sides of the two limiting plates that are close to each other are both in abutment with the end of the brush strip, thereby limiting the brush strip and positioning the brush strip on the concave die. At this time, the midpoint of the brush strip is aligned with the center of the rotating gear, i.e., offset from the central axis of the convex die. Then, the driving member is started to make the convex die perform first extrusion forming on the brush strip, and the operation is convenient.

[0033] Optionally, the moving assembly comprises:

[0034] The moving plate is horizontally arranged and slidingly connected to the bottom wall of the workbench, and can move along a direction perpendicular to the central axis of the convex die. The rotating gear is rotationally connected to the moving plate, and the rotating racks are slidingly connected to the moving plate.

[0035] A moving cylinder is arranged on the workbench, and an output end of the moving cylinder is fixed with a moving plate and used to drive the moving plate to move.

[0036] By adopting the above technical scheme, when the limiting plates abut against the end of the brush strip, i.e. the brush strip is limited between the two limiting plates, the male die first extrudes the brush strip, then the driving member drives the male die to reset, the moving cylinder is started, the moving plate is driven to move horizontally, the center of the rotating gear is moved to the central axis of the male die, so that the center of the brush strip is aligned with the center of the male die, and then the driving member drives the male die to extrude the brush strip again, so that the center of the brush strip is repaired, the bending degree of the brush strip is further adjusted, and the accuracy of the bending degree of the final brush strip is improved.

[0037] Optionally, the rotating gear is connected with a rotating assembly used to drive the rotating gear to rotate, and the rotating assembly comprises:

[0038] A rotating rod is coaxially fixed with the rotating gear, and a rotating groove is formed in the rotating rod;

[0039] A rotating sleeve is sleeved on the rotating rod, an inner wall of the rotating sleeve is fixed with a rotating block, and the rotating block is inserted into and moves in the rotating groove to drive the rotating rod to rotate.

[0040] By adopting the above technical scheme, when the rotating sleeve is moved away from the moving plate, the rotating block moves in the rotating groove, the side wall of the rotating block abuts against the inner wall of the rotating groove, the rotating block is limited and guided, the rotating block only moves along the track of the rotating groove, i.e. the rotating block moves, the inner wall of the rotating groove is subjected to a diagonal force, the rotating rod rotates around the central axis of the rotating rod, the rotating gear is further driven to rotate, and the rotating rack is driven to move, so that the operation is convenient.

[0041] Optionally, the workbench is provided with a abutting mechanism, when the male die presses the brush strip, the abutting mechanism is used to drive the rotating sleeve to translate, and the two limiting plates are driven to move close to each other, and the abutting mechanism comprises:

[0042] A clamping assembly is arranged on the moving plate, and the clamping assembly is used to clamp the rotating sleeve;

[0043] A sliding assembly is arranged on the male die, and the sliding assembly moves to drive the clamping assembly to clamp the rotating sleeve to translate.

[0044] By adopting the above technical scheme, when the brush strip is initially positioned between the two adjusting plates, i.e., on the concave die, the rotating sleeve is directly rotated by rotating the rotating rod, so that the position of the rotating sleeve on the rotating rod remains unchanged. During the process of extruding the brush strip by the convex die and the concave die, the overall length of the brush strip will be shortened, and when the convex die moves downward to abut against the top wall of the brush strip, the clamping assembly has clamped and fixed the rotating sleeve.

[0045] When the convex die continues to move to extrude the brush strip, the sliding assembly is driven to move, thereby driving the clamping assembly to move the clamped rotating sleeve away from the moving plate, so that the two rotating racks drive the two limiting plates to move closer to each other, i.e., the adjusting plates also move toward the brush strip during the process of shortening the length of the brush strip, so that the adjusting plates are always in abutment with the brush strip, thereby preventing the brush strip from moving in the length direction, and the brush strip can still be limited, thereby increasing the accuracy of the bending and forming of the brush strip.

[0046] Optionally, the clamping assembly comprises:

[0047] two clamping rods vertically arranged and perpendicular to the moving plate, the two clamping rods are symmetrically arranged about the central axis of the rotating gear, and one end of each clamping rod is inserted into the moving plate;

[0048] two clamping plates, each clamping plate is rotatably connected to the corresponding clamping rod by a torsion spring, the two clamping plates are symmetrically arranged about the central axis of the rotating gear, the rotating sleeve is located between the two clamping plates, and the torsion spring is used to drive the clamping plates to separate from the rotating sleeve.

[0049] By adopting the above technical scheme, in the initial state, the two clamping top ends are close to each other under the action of the torsion spring, the rotating sleeve is located between the two clamping plates, and there is a gap between the rotating sleeve and the clamping plates. Moving the top ends of the two limiting plates away from each other causes the clamping plates to rotate about the connection between the clamping plate and the clamping rod, thereby causing the torsion spring to deform until the clamping plates abut against the rotating sleeve. At this time, the opposite sides of the rotating sleeve are subjected to the extrusion force of the clamping plates, i.e., the clamping plates can clamp and fix the rotating sleeve.

[0050] Optionally, the sliding assembly comprises:

[0051] a sliding rod vertically arranged on the bottom wall of the convex die;

[0052] a sliding plate arranged in the moving plate and moving in the moving plate along a direction parallel to the central axis of the concave die, and an end of the sliding rod away from the convex die is slidingly connected to the sliding plate and moves on the sliding plate along a direction perpendicular to the central axis of the concave die;

[0053] The clamping rod is moved along the length direction of the clamping rod on the moving plate, a reset spring is arranged on the clamping rod, one end of the reset spring is fixed with the clamping rod, and the other end is fixed with the moving plate, and the reset spring is used for pushing the clamping rod to the direction close to the moving plate;

[0054] One end of the clamping rod inserted in the moving plate is provided with a guide surface, and the end of the guide surface away from the clamping plate is inclined downward, and when the sliding plate abuts against the guide surface, the clamping rod is pushed to move away from the moving plate.

[0055] The sliding block is fixedly connected with the sliding plate through the connecting rod, and the sliding block is driven to the two clamping plates by the sliding plate to drive the two clamping plates to clamp and fix the rotating sleeve.

[0056] By adopting the above technical scheme, when the driving part drives the convex die to move, the sliding rod drives the sliding plate to move to the direction close to the concave die, and the connecting rod also drives the sliding block to move together until the sliding block moves to the top of the two clamping plates and is inserted between the two clamping plates from the top of the two clamping plates, and the clamping plate always abuts against the side wall of the sliding block under the action of the torsional spring. The convex die continues to move together with the sliding block to the direction close to the concave die, so that the two clamping plates are pried open, the torsional spring is deformed, the inner wall of the accommodating groove is in contact with the side wall of the rotating sleeve, at this time the sliding plate moves to abut against the top wall of the brush strip, and the sliding plate abuts against the guide surface, the convex die continues to move, the sliding block continues to pry open the two clamping plates, so that the two clamping plates extrude the rotating sleeve, and the rotating sleeve is clamped and fixed.

[0057] And the clamping rod is affected by the reset spring, so that the guide surface abuts against the sliding plate, and the convex die moves while the sliding plate slides on the guide surface, the guide surface plays a guiding role, overcomes the elastic force of the reset spring, and is deformed, so as to drive the clamping rod to move horizontally, drive the two clamping plates to clamp the rotating sleeve to move away from the moving plate, realize that the rotating rod drives the rotating gear to rotate, that is, the brush strip is bent, the rotating rack drives the adjusting plate to move. Further limit the brush strip.

[0058] In summary, the present application has at least one of the following beneficial effects:

[0059] 1、use, the brush strip is placed horizontally on the concave die, then start the limiting assembly, resist the two ends of the brush strip, so as to limit the brush strip on the concave die, at this time the center of the brush strip is offset from the center axis of the convex die, then start the driving part, drive the convex die to extrude the brush strip to realize the first extrusion forming of the brush strip, but the metal material brush strip will recover small deformation, so that the bending degree fails to meet the standard, and the position of the bending center point of the brush strip is not correct. After that, start the moving assembly, drive the limiting assembly to drive the brush strip to move to the convex die, then start the driving part again to realize the second extrusion forming of the brush strip, so as to repair the small deformation after the first extrusion forming, and adjust the position of the bending point of the brush strip;

[0060] 2、initial state, the center of the rotating gear is offset from the center axis of the convex die, when the brush strip is placed on the concave die, drive the rotating gear to rotate, so that the two rotating racks drive the corresponding limiting plates to move towards the rotating gear at the same time, until the side of the two limiting plates close to each other is in abutment with the end of the brush strip, limiting the brush strip, so that the brush strip is positioned on the concave die, at this time the midpoint of the brush strip is aligned with the center of the rotating gear, that is, offset from the center axis of the convex die. Then start the driving part, so that the convex die extrudes the brush strip for the first time. BRIEF DESCRIPTION OF DRAWINGS

[0061] Figure 1 It is a structure schematic view of the brush strip bending device of embodiment one of the application;

[0062] Figure 2 It is a structure schematic view of the workbench in embodiment one;

[0063] Figure 3 It is a structure schematic view of the brush strip bending device of embodiment two;

[0064] Figure 4 It is a structure schematic view of the workbench in embodiment two;

[0065] Figure 5 It is a structure schematic view of the moving plate in embodiment two;

[0066] Figure 6 It is a structure sectional view of the moving plate in embodiment two;

[0067] Figure 7 It is a structure schematic view of the rotating assembly and the abutting mechanism in embodiment two;

[0068] Figure 8 It is a structure sectional view of the connection relationship between the clamping rod and the moving plate in embodiment two;

[0069] Figure 9 It is Figure 8 the enlarged view of A in embodiment two;

[0070] In the figure: 10, work frame; 20, concave die; 30, convex die; 31, driving part; 40, limiting assembly; 41, rotating gear; 42, rotating rack; 421, limiting rod; 43, limiting plate; 431, mounting hole; 432, adjusting hole; 44, positioning cylinder; 45, positioning block; 50, moving assembly; 51, moving plate; 52, moving cylinder; 53, supporting platform; 54, advancing cylinder; 60, rotating assembly; 61, rotating rod; 611, rotating groove; 62, rotating sleeve; 621, rotating block; 70, abutting mechanism; 71, clamping assembly; 711, clamping rod; 7111, guide surface; 712, torsional spring; 713, clamping plate; 7131, accommodating groove; 72, sliding assembly; 721, sliding rod; 722, sliding plate; 723, sliding block; 80, adjusting plate; 90, adjusting rod; 110, return spring; 120, anti-skid strip; 130, connecting rod; 140, conveying belt; 150, blocking cylinder; 151, abutting plate; 160, blocking rod; 170, support. DETAILED DESCRIPTION

[0071] The following description will be made in conjunction with the accompanying drawings. Figures 1-9 The application is further described in detail.

[0072] Embodiment one:

[0073] The embodiment of the application discloses a brush bar bending device. Referring to Figure 1 and Figure 2 The brush bar bending device comprises a work frame 10, the work frame 10 is horizontally arranged, the top end of the work frame 10 extends in the horizontal direction, one side of the work frame 10 is provided with a conveying belt 140, the work frame 10 is fixedly connected with the rack of the conveying belt 140, the belt of the conveying belt 140 is located above the work frame 10, and the end of the belt of the conveying belt 140 in the moving direction is located directly above the work frame.

[0074] Referring to Figure 1 and Figure 2 A driving part 31 is fixed on the top wall of the work frame 10 through bolts, in the embodiment of the application, the driving part 31 is a cylinder, the output end of the cylinder is fixed with a convex die 30, and the cylinder can drive the convex die 30 to move along the length direction of the conveying belt 140. A concave die 20 is fixed on the top wall of the work frame 10, the concave die 20 is located on one side of the convex die 30, the central axes of the concave die 20 and the convex die 30 coincide, a bending area is formed between the concave die 20 and the convex die 30, and the end of the conveying belt 140 is located directly above the bending area, wherein the moving direction of the belt of the conveying belt 140 is defined as the length direction of the conveying belt 140.

[0075] In use, a plurality of brush strips are placed on the belt of the conveying belt 140, the conveying belt 140 moves to drive the brush strips to move and fall between the concave die 20 and the convex die 30 at the end of the conveying belt 140, then the driving member 31 is started to drive the convex die 30 to move downward to extrude the brush strips, the concave die 20 and the convex die 30 cooperate to realize the extrusion forming of the brush strips.

[0076] With reference to Figure 1 and Figure 2 In order to make the concave die 20 and the convex die 30 extrude a single brush strip each time and increase the accuracy of the bent brush strip, a fixed plate is welded and fixed on the workbench 10, a gear position cylinder 150 is fixed and installed on the fixed plate through bolts, and an abutment plate 151 is fixed at the output end of the gear position cylinder 150. The abutment plate 151 is located at the end of the moving direction of the conveying belt 140, and the top wall of the abutment plate 151 is flush with the top wall of the belt of the conveying belt 140, and the gear position cylinder 150 can drive the abutment plate 151 to abut on the belt of the conveying belt 140. A support 170 is fixed on the frame of the conveying belt 140, the support 170 is fixed with a blocking rod 160, the blocking rod 160 is located above the conveying belt 140, and the distance from the blocking rod 160 to the upper surface of the belt of the conveying belt 140 is equal to the thickness of a brush strip.

[0077] In use, the abutment plate 151 is first driven by the gear position cylinder 150 to move away from the conveying belt 140, so that the distance from the abutment plate 151 to the conveying belt 140 is greater than the thickness of a brush strip, the conveying belt 140 drives the brush strip to move towards the workbench 10, when the brush strip moves to the blocking rod 160, the brush strip needs to pass below the blocking rod 160 at this time, the blocking rod 160 plays a limiting role to screen the brush strip, so that a single brush strip passes through the blocking rod 160 and the brush strip falls between the abutment plate 151 and the conveying belt 140 at the end of the conveying belt 140. At this time, the gear position cylinder 150 is started to make the abutment plate 151 abut on the conveying belt 140 to extrude the conveying belt 140, so as to limit the rotation of the conveying belt 140, that is, the brush strip stops moving, so that no extra brush strip will fall from the conveying belt 140, so that only one brush strip will be bent between the convex die 30 and the concave die 20 each time. The above steps are repeated to realize the automatic feeding of the brush strip.

[0078] With reference to Figure 1 and Figure 2The workbench 10 is provided with a limiting assembly 40 for limiting the brush strip between the male die 30 and the female die 20, wherein the limiting assembly 40 is connected with the workbench 10 through a moving assembly 50, the moving assembly 50 comprises a support platform 53 and a pushing cylinder 54, the support platform 53 is placed on the upper surface of the workbench 10 and can move on the workbench 10 in a direction perpendicular to the axis of the female die 20, specifically, in the first embodiment, the female die 20 is fixed on the workbench 10 through a mounting plate, the support platform 53 is located below the female die 20, the bottom wall of the female die 20 is in contact with the upper surface of the support platform 53, and the female die 20 and the male die 30 are in the same horizontal plane, that is, the bottom wall of the male die 30 is also in contact with the upper surface of the support platform 53 and can move on the support platform 53.

[0079] Referring to Figure 1 and Figure 2 , the pushing cylinder 54 is fixedly installed on the workbench 10 through bolts, the output end of the pushing cylinder 54 is fixed with the side wall of the support platform 53, and the pushing cylinder 54 is used to drive the support platform 53 to move on the workbench 10 in a direction perpendicular to the axis of the female die 20.

[0080] Referring to Figure 1 and Figure 2 , the limiting assembly 40 comprises a positioning cylinder 44 and a positioning block 45, the positioning cylinder 44 is fixedly installed on the side wall of the support platform 53 through bolts, the output end of the positioning cylinder 44 is fixed with the positioning block 45, the bottom wall of the positioning block 45 is in contact with the upper surface of the support platform 53, and the positioning block 45 can be driven by the positioning cylinder 44 to move on the upper surface of the support platform 53 in a direction perpendicular to the axis of the female die 20.

[0081] When the brush strip is dropped on the support platform 53 by the conveying belt 140 and located between the female die 20 and the male die 30, the positioning cylinder 44 is started to drive the positioning block 45 to push the brush strip to change the position of the brush strip relative to the axis of the female die 20, at this time, the center of the brush strip deviates from the axis of the male die 30. Then the driving part 31 is started to drive the male die 30 to move on the upper surface of the support platform 53 towards the female die 20 until the male die 30 and the female die 20 press the brush strip to realize eccentric bending of the brush strip. At this time, the bending degree of the brush strip has approached the required standard, but the brush strip made of metal material will slightly recover deformation, so that the bending degree cannot reach the standard, and the position of the bending center point of the brush strip is not correct.

[0082] Afterwards, the driving member 31 is used to reset the male die 30, and the brush strip loses the extrusion force, i.e. is placed on the support platform 53. At this time, the advancing cylinder 54 is started to push the support platform 53 to move in the direction perpendicular to the central axis of the female die 20, thereby driving the brush strip to move, so that the center point of the brush strip moves to the central axis of the female die 20. Then the driving member 31 is started again to realize the second extrusion forming of the brush strip by the male die 30 and the female die 20. Thus the small deformation after the first extrusion forming is repaired, and the position of the bending point of the brush strip is adjusted. The above-mentioned extrusion forming at two different extrusion points of the brush strip, i.e. the first extrusion makes the bending degree of the brush strip basically meet the requirements, and the second extrusion repairs the bending center point of the brush strip and slightly adjusts the bending degree, so that the accuracy of the final bending degree of the brush strip is high.

[0083] With reference to Figure 1 And Figure 2 When the brush strip is completed by twice bending, the positioning cylinder 44 is started again to make the positioning block 45 move to abut against the end wall of the brush strip and push the brush strip to move in the direction perpendicular to the central axis of the female die 20 until the bent brush strip moves out of the female die 20 and the male die 30, thereby realizing the automatic unloading of the brush strip. Then the positioning block 45 is reset by the positioning cylinder 44, and the automatic feeding of the brush strip is realized again by the conveying belt 140, which is convenient to operate.

[0084] The implementation principle of the brush strip bending device of the embodiment one is as follows: in use, first the blocking cylinder 150 is used to drive the abutment plate 151 to move away from the conveying belt 140, and then the conveying belt 140 is driven to rotate to drive the brush strip to move towards the workbench 10. When the brush strip moves to the blocking rod 160, the blocking rod 160 screens the brush strip to make a single brush strip pass through the blocking rod 160 and fall from the end of the conveying belt 140 to between the male die 30 and the female die 20. At this time, the abutment plate 151 is abutted on the conveying belt 140 by the blocking cylinder 150 to stop the conveying belt 140.

[0085] Then the positioning cylinder 44 is started to push the brush strip to move by the positioning block 45, so that the position of the brush strip relative to the central axis of the female die 20 is changed. At this time, the center of the brush strip deviates from the central axis of the male die 30. Then the driving member 31 is started to move the male die 30 on the upper surface of the support platform 53 towards the female die 20 until the male die 30 and the female die 20 extrude the brush strip to realize the eccentric bending of the brush strip. Then the male die 30 is reset by the driving member 31, and the brush strip loses the extrusion force, i.e. is placed on the support platform 53.

[0086] At this time, the propelling cylinder 54 is started to push the support platform 53 to move in the direction perpendicular to the central axis of the female die 20, so as to drive the brush strip to move, so that the center point of the brush strip moves to the central axis of the female die 20, and then the driving member 31 is started again to realize the secondary extrusion forming of the male die 30 and the female die 20 on the brush strip, repair the slight deformation after the first extrusion forming, and adjust the position of the bending point of the brush strip.

[0087] Embodiment two:

[0088] For the sake of understanding and description, the difference between the embodiment two and the embodiment one of the present application lies in that:

[0089] With reference to Figure 3 , Figure 4 and Figure 5 , the moving assembly 50 comprises a moving plate 51 and a moving cylinder 52. The moving plate 51 is vertically arranged on the side of the working frame 10 away from the female die 20 and is parallel to the working frame 10. The moving plate 51 is provided with a moving block which is embedded on the side wall of the working frame 10 and can move on the working frame 10 in the direction perpendicular to the central axis of the female die 20. The moving cylinder 52 is fixed on the side wall of the working frame 10 by bolts, and the output end of the moving cylinder 52 is fixed with the side wall of the moving plate 51 for driving the moving plate 51 to move.

[0090] With reference to Figure 4 and Figure 5 , the limiting assembly 40 comprises a rotating gear 41, two rotating racks 42 and two limiting plates 43. The rotating gear 41 is vertically arranged and is rotatably connected on the side of the moving plate 51 away from the working frame 10. The side wall of the rotating rack 42 is provided with a sliding block, and the side of the moving plate 51 away from the working frame 10 is provided with a sliding groove in the direction perpendicular to the central axis of the female die 20. The sliding block is inserted into the sliding groove and can move in the sliding groove. The two rotating racks 42 are arranged along the length direction of the sliding groove, the rotating gear 41 is located between the two rotating racks 42, and the two rotating racks 42 are centrally symmetric with the center of the rotating gear 41 as the center. The end of each rotating rack 42 away from the rotating gear 41 is fixed with a limiting rod 421, the limiting rod 421 penetrates through the limiting plate 43 and the working frame 10, so that the end of the limiting rod 421 away from the rotating rack 42 extends to the side of the working frame 10 away from the moving plate 51, and the end of the limiting rod 421 is fixedly connected with the limiting plate 43. The limiting plate 43 is vertically arranged, and the two limiting plates 43 are arranged in the direction perpendicular to the central axis of the female die 20.

[0091] In the initial state, the moving plate 51 carries the center of the rotating gear 41 offset from the central axis of the convex die 30. After the brush strip is placed in the bending area, the rotating gear 41 is driven to rotate, so that the two rotating racks 42 drive the corresponding limiting plates 43 to move towards the rotating gear 41 at the same time, until the side of the two limiting plates 43 close to each other is in abutment with the end of the brush strip, thereby limiting the brush strip, so that the brush strip is positioned on the concave die 20. Since the center of the distance between the two limiting plates 43 always corresponds to the center of the rotating gear 41, the midpoint of the brush strip is aligned with the center of the rotating gear 41 at this time, that is, offset from the central axis of the convex die 30. Then the cylinder is started, so that the convex die 30 performs the first extrusion forming on the brush strip. At this time, the bending degree of the brush strip has approached the required standard, but after the convex die 30 moves up to separate from the brush strip, the brush strip made of metal material will recover the deformation to a small extent, so that the bending degree cannot meet the standard, and the position of the bending center point of the brush strip is not correct.

[0092] Referring to Figure 4 and Figure 5 After that, the moving cylinder 52 is started to drive the moving plate 51 to move horizontally with the entire limiting assembly 40, so that the center of the rotating gear 41 moves to the central axis of the convex die 30, thereby aligning the center of the brush strip with the center of the convex die 30. Then the cylinder is started again to realize the second extrusion forming on the brush strip, thereby repairing the small deformation after the first extrusion forming and adjusting the position of the bending point of the brush strip. The above-mentioned extrusion forming at two different extrusion points of the brush strip, that is, the first extrusion makes the bending degree of the brush strip basically meet the requirements, and the second extrusion repairs the bending center point of the brush strip and slightly adjusts the bending degree, so that the accuracy of the final bending degree of the brush strip is high.

[0093] Referring to Figure 4 Since the minimum distance of the movement of the limiting plate 43 is the distance between the adjacent teeth on the rotating rack 42, if the distance between the limiting plate 43 and the end of the brush strip is less than the minimum distance that the limiting plate 43 can move at this time, the limiting plate 43 cannot limit the brush strip. In order to increase the accuracy of the limiting of the brush strip, the mounting hole 431 is provided through the opposite side of the limiting plate 43, the adjusting plate 80 is fitted and penetrated in the mounting hole 431, the side close to each other of the two adjusting plates 80 can abut against the end of the brush strip, and the center of the distance between the two adjusting plates 80 is aligned with the center of the rotating gear 41. The adjusting hole 432 is provided through the inner wall of the mounting hole 431, the adjusting rod 90 is inserted in the adjusting hole 432, the adjusting rod 90 is threadedly connected with the inner wall of the adjusting hole 432, and one end of the adjusting rod 90 abuts against the side wall of the adjusting plate 80.

[0094] Adjusting the adjusting rod 90 in the direction away from the adjusting plate 80, so that the end of the adjusting rod 90 is separated from the side wall of the adjusting plate 80, so that the adjusting plate 80 can move in the mounting hole 431, then simultaneously move the two adjusting plates 80 in the direction close to the brush bar by the same distance, until the side wall of the adjusting plate 80 abuts against the end of the brush bar, the brush bar is limited between the two adjusting plates 80, at this time the center of the brush bar is still aligned with the center of the rotating gear 41. Adjust the adjusting rod 90 in the direction of the adjusting plate 80, so that the adjusting rod 90 abuts the adjusting plate 80 against the inner wall of the mounting hole 431 again, the adjusting plate 80 increases the accuracy of movement, so that the limiting of the brush bar is more accurate and stable.

[0095] With reference to Figure 5 and Figure 6 The rotating gear 41 is provided with a rotating assembly 60 for driving the rotating gear 41 to rotate, the rotating assembly 60 includes a rotating rod 61 and a rotating sleeve 62, the rotating rod 61 is coaxially fixed with the rotating gear 41, and a rotating groove 611 is formed in the length direction of the rotating rod 61, and the rotating groove 611 is of a spiral type. The rotating sleeve 62 is adaptively sleeved on the rotating rod 61, and the inner wall of the rotating sleeve 62 is fixedly provided with a rotating block 621, the rotating block 621 is inserted into the rotating groove 611 and can move in the rotating groove 611.

[0096] When the rotating sleeve 62 is moved in the direction away from the moving plate 51, the rotating block 621 moves in the rotating groove 611, the side wall of the rotating block 621 abuts against the inner wall of the rotating groove 611, which plays a role of limiting and guiding, so that the rotating block 621 can only move along the track of the rotating groove 611, that is, when the rotating block 621 moves, an oblique force is applied to the inner wall of the rotating groove 611, so that the rotating rod 61 rotates around the central axis of the rotating rod 61, and further drives the rotating gear 41 to rotate, thereby driving the rotating rack 42 to move.

[0097] With reference to Figure 7 and Figure 8 In the process of extruding the brush bar, the overall length of the brush bar will be shortened. In order to enable the adjusting plate 80 to always abut against the end of the brush bar, that is, to always play a limiting role on the brush bar, the workbench 10 is provided with a abutting mechanism 70 for driving the rotating sleeve 62 to translate, the abutting mechanism 70 includes a clamping assembly 71 for clamping the rotating sleeve 62 and a sliding assembly 72 for driving the clamping assembly 71 to move, and the clamping assembly 71 is arranged on the moving plate 51.

[0098] With reference to Figure 8 and Figure 9The clamping assembly 71 comprises two clamping rods 711 and two clamping plates 713. The clamping rods 711 are horizontally arranged and perpendicular to the moving plate 51. The two clamping rods 711 are located on both sides of the rotating gear 41 and are symmetrically arranged with the central axis of the rotating gear 41 as the axis. One end of the clamping rod 711 is inserted into the moving plate 51 and can move along the length direction of the clamping rod 711 on the moving plate 51. A return spring 110 is arranged on the clamping rod 711. One end of the return spring 110 is fixed to the moving plate 51, and the other end is fixed to the clamping rod 711 through a mounting plate. The return spring applies a force to push the clamping rod 711 towards the workbench 10, thereby achieving the installation of the clamping rod 711 on the moving plate 51.

[0099] With reference to Figure 9 One end of the clamping rod 711 away from the moving plate 51 is provided with a torsion spring 712. One end of the torsion spring 712 is fixed to the clamping rod 711, and the other end is fixed to the middle part of the clamping plate 713. Specifically, the connection between the torsion spring 712 and the clamping plate 713 is located on the side where the two clamping plates 713 are away from each other. In the initial state, the top parts of the two clamping plates 713 are close to each other under the action of the torsion spring 712.

[0100] When the brush bar is to be restricted between the two adjusting plates 80, i.e., positioned on the concave die 20, the rotating rod 61 is directly rotated, so that the rotating sleeve 62 is rotated along with the rotation of the rotating rod 61, thereby keeping the position of the rotating sleeve 62 on the rotating rod 61 unchanged. The rotating sleeve 62 is always located between the two clamping plates 713.

[0101] With reference to Figure 6 and Figure 7 The sliding assembly 72 comprises a sliding plate 722 and a sliding block 723. The sliding plate 722 is embedded in the moving plate 51 and can move up and down in the moving plate 51. The sliding plate 722 is arranged along the moving direction of the moving plate 51. A sliding groove is formed on the side of the sliding plate 722 close to the workbench 10 along the length direction of the sliding plate 722. A sliding rod 721 is fixed on the side wall of the convex die 30. The sliding rod 721 penetrates through the workbench 10 and is inserted into the moving plate 51. A fixed block is fixed to the end of the sliding rod 721 away from the convex die 30 and can move in the sliding groove. When the moving cylinder 52 drives the moving plate 51 to move, the sliding plate 722 in the moving plate 51 is also moved, while the convex die 30 is fixed, so that the fixed block moves in the sliding groove and does not interfere with the movement of the moving plate 51.

[0102] With reference to Figure 7 and Figure 8The clamping rod 711 is cut with a guide surface 7111 near one end of the workbench 10, the guide surface 7111 is inclined downward away from one end of the clamping plate 713, the guide surface 7111 is communicated with the sliding rod 721, and is located directly below the sliding rod 721 in the initial state. The connecting rod 130 is arranged on the moving plate 51, the connecting rod 130 is inverted C-shaped, one end of the connecting rod 130 is fixed with the sliding plate 722, the other end is fixed with the sliding block 723, and in order to enhance the stability of the connecting rod 130, reinforcing ribs are arranged at the bending positions of the connecting rod 130 for reinforcement. The sliding block 723 is located directly above the rotating sleeve 62, and the top end of the clamping plate 713 is provided with a sliding surface, the sliding surface is located on the side of the two clamping plates 713 close to each other, so that the sliding block 723 is inserted between the two clamping plates 713

[0103] When the driving piece 31 drives the male die 30 to move downward, the sliding rod 721 drives the sliding plate 722 to move downward, and the connecting rod 130 also drives the sliding block 723 to move downward together, until the sliding block 723 moves to the top end of the two clamping plates 713 and is inserted between the two clamping plates 713, and the clamping plate 713 is always in abutment with the side wall of the sliding block 723 under the action of the torsional spring 712. The male die 30 continues to move downward together with the sliding block 723, so that the two clamping plates 713 are separated, the torsional spring 712 is deformed, the inner wall of the accommodating groove 7131 is in contact with the side wall of the rotating sleeve 62, at this time the sliding plate 722 moves to abut against the top wall of the brush strip, and the sliding plate 722 abuts against the guide surface 7111, the male die 30 continues to move downward, so that the sliding block 723 continues to separate the two clamping plates 713, so that the two clamping plates 713 press the rotating sleeve 62, and the rotating sleeve 62 is clamped and fixed.

[0104] The clamping rod 711 is affected by the return spring 110, so that the guide surface 7111 abuts against the sliding plate 722, and the sliding plate 722 slides on the guide surface 7111 while the male die 30 moves downward. The guide surface 7111 plays a guiding role, overcomes the elastic force of the return spring 110, deforms, so as to drive the clamping rod 711 to move horizontally, drive the two clamping plates 713 to clamp the rotating sleeve 62 to move away from the moving plate 51, realize that the rotating rod 61 drives the rotating gear 41 to rotate, that is, during the bending process of the brush strip, the rotating rack 42 drives the limiting plate 43 and the adjusting plate 80 to move, and further limits the brush strip.

[0105] Referring to Figure 9 In order to increase the stability of the clamping plate 713 clamping and fixing the rotating sleeve 62, the accommodating groove 7131 matched with the rotating sleeve 62 is arranged on the side of the clamping plate 713 close to each other, and a plurality of anti-skid strips 120 made of rubber are fixed on the side wall of the rotating sleeve 62 and the inner wall of the accommodating groove 7131, and the anti-skid strips 120 are arranged along the length direction of the rotating rod 61.

[0106] When the clamping plate 713 rotates to abut against the rotating sleeve 62, the inner wall of the accommodating groove 7131 abuts against the rotating sleeve 62, and the anti-skid strip 120 increases the roughness of the inner wall of the accommodating groove 7131 and the side wall of the rotating sleeve 62, thereby increasing the friction between the inner wall of the accommodating groove 7131 and the rotating sleeve 62, and further increasing the stability of clamping and fixing the rotating sleeve 62.

[0107] The implementation principle of the brush strip bending device in the second embodiment of the present application is as follows: in the initial state, the center of the rotating gear 41 deviates from the central axis of the male die 30 with the moving plate 51; when the brush strip is placed in the bending area, the rotating gear 41 is driven to rotate, so that the two rotating racks 42 drive the corresponding limiting plates 43 to move in the direction of the rotating gear 41 at the same time, until the side of the two limiting plates 43 that faces each other abuts against the end of the brush strip, thereby limiting the brush strip, so that the brush strip is positioned on the female die 20; since the distance between the two limiting plates 43 is always centered on the center of the rotating gear 41, the midpoint of the brush strip is aligned with the center of the rotating gear 41, that is, deviates from the central axis of the male die 30. Then the cylinder is started, so that the male die 30 performs first extrusion forming on the brush strip; at this time, the bending degree of the brush strip has approached the required standard, but after the male die 30 moves up to separate from the brush strip, the brush strip made of metal material will slightly recover the deformation, so that the bending degree cannot meet the standard, and the position of the bending center point of the brush strip is not correct.

[0108] After that, the moving cylinder 52 is started to drive the moving plate 51 to move horizontally with the entire limiting assembly 40, so that the center of the rotating gear 41 moves to the central axis of the male die 30, thereby aligning the center of the brush strip with the center of the male die 30; then the cylinder is started again to realize second extrusion forming on the brush strip, thereby repairing the slight deformation after the first extrusion forming and adjusting the position of the bending point of the brush strip. The above-mentioned extrusion forming at two different extrusion points of the brush strip, that is, the first extrusion makes the bending degree of the brush strip basically meet the requirement, and the second extrusion repairs the bending center point of the brush strip and slightly adjusts the bending degree, so that the accuracy of the final bending degree of the brush strip is high.

[0109] In the above process of bending the brush strip, the length of the brush strip will be shortened, and the limiting plate 43 is always in abutment with the end of the brush strip under the action of the abutment mechanism 70, so that the brush strip cannot move in the length direction and still can be limited, thereby further increasing the accuracy of the bending forming of the brush strip.

[0110] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A brush bar bending apparatus for bending a brush bar, characterized by, The utility model relates to a brush strip bending device, including: Workstation (10) is horizontally arranged; Die (20) is fixed on the workstation (10); Male die (30) is arranged on the workstation (10) and is located on one side of the die (20), the male die (30) is driven by driving part (31), can move on the workstation (10) to the direction of approaching or away from the die (20), the male die (30) and the die (20) form the bending area for placing brush strip between; Moving assembly (50) is slidably connected on the workstation (10) and moves on the workstation (10) in the direction perpendicular to the axis of the die (20); Limiting assembly (40) is arranged on the moving assembly (50), and the moving assembly (50) is used to drive the limiting assembly (40) to move the brush strip to the direction of approaching or away from the axis of the die (20); The limiting assembly (40) includes: Rotary gear (41) is horizontally arranged and is rotatably connected on the moving assembly (50); Two rotary racks (42) are slidably connected on the moving assembly (50), the rotary rack (42) is arranged along the horizontal direction and moves along the direction perpendicular to the axis of the die (20), two rotary racks (42) are symmetrically centered on the center of rotary gear (41), and two rotary racks (42) are meshed with rotary gear (41); Two limiting plates (43) are fixed on the corresponding rotary rack (42), and two limiting plates (43) are symmetrically arranged on the axis of rotary gear (41), and two limiting plates (43) are located at two ends of the bending area respectively; The moving assembly (50) includes: Moving plate (51) is horizontally arranged and is slidably connected on the bottom wall of the workstation (10), the moving plate (51) can move along the direction perpendicular to the axis of the male die (30), the rotary gear (41) is rotatably connected on the moving plate (51), and the rotary rack (42) is slidably connected on the moving plate (51); Moving cylinder (52) is arranged on the workstation (10), and the output end of the moving cylinder (52) is fixed with the moving plate (51) and is used to drive the moving plate (51) to move; The rotary gear (41) is connected with a rotating assembly (60) for driving the rotary gear (41) to rotate, and the rotating assembly (60) includes: Rotating rod (61) is coaxially fixed with the rotary gear (41), and a rotating groove (611) is formed in the rotating rod (61); Rotating sleeve (62) is sleeved on the rotating rod (61), the inner wall of the rotating sleeve (62) is fixed with a rotating block (621), the rotating block (621) is inserted into the rotating groove (611) and moves in the rotating groove (611), so as to drive the rotating rod (61) to rotate; The work frame (10) is provided with abutting mechanism (70), when the male die (30) press the brush bar, the abutting mechanism (70) is used to drive the rotation sleeve (62) translation, drive two limit plates (43) close to each other, the abutting mechanism (70) includes: Clamping assembly (71), be equipped with on the moving plate (51), the clamping assembly (71) is used for clamping rotation sleeve (62); Slip assembly (72), be equipped with on the male die (30), the slip assembly (72) moves, drive clamping assembly (71) clamping rotation sleeve (62) translation; The clamping assembly (71) includes: Two clamping rods (711) are vertically arranged and perpendicular to the moving plate (51), two clamping rods (711) are symmetric about the central axis of the rotating gear (41), one end of the clamping rod (711) is inserted into the moving plate (51); Two clamping plates (713) are each connected to the corresponding clamping rod (711) by a torsion spring (712), two clamping plates (713) are symmetric about the central axis of the rotating gear (41), the rotating sleeve (62) is located between two clamping plates (713), and the torsion spring (712) is used to drive the clamping plate (713) to separate from the rotating sleeve (62); The slip assembly (72) includes: Slip rod (721) is vertically arranged on the bottom wall of the male die (30); Slip plate (722) is arranged in the moving plate (51) and moves in the moving plate (51) along the direction parallel to the central axis of the female die (20), one end of the slip rod (721) away from the male die (30) is slidably connected to the slip plate (722) and moves on the slip plate (722) along the direction perpendicular to the central axis of the female die (20); The clamping rod (711) moves on the moving plate (51) along the length direction of the clamping rod (711), the clamping rod (711) is provided with a return spring (110), one end of the return spring (110) is fixed to the clamping rod (711), the other end is fixed to the moving plate (51), and the return spring (110) is used to push the clamping rod (711) towards the moving plate (51); One end of the clamping rod (711) inserted into the moving plate (51) is provided with a guide surface (7111), the guide surface (7111) is inclined downward away from one end of the clamping plate (713), when the slip plate (722) abuts against the guide surface (7111), the clamping rod (711) is pushed to move away from the moving plate (51); Slip block (723), the slip block (723) is fixedly connected to the slip plate (722) through a connecting rod (130), the slip block (723) is driven by the slip plate (722) to be between two clamping plates (713), so as to drive two clamping plates (713) to clamp and fix the rotating sleeve (62).

2. The brush bar bending apparatus of claim 1, wherein The moving assembly (50) includes: A support platform (53) is slidingly connected to the workbench (10), the support platform (53) is located below the die (20) and the punch (30), and the punch (30) can move on the upper surface of the support platform (53), and the bending area is located on the support platform (53); A pushing cylinder (54) is arranged on the workbench (10), the output end of the pushing cylinder (54) is fixedly connected with the support platform (53), and the pushing cylinder (54) is used for driving the support platform (53) to move towards or away from the central axis of the die (20).

3. The brush bar bending apparatus of claim 2, wherein The limiting assembly (40) comprises: A positioning cylinder (44) is fixed on the support platform (53); A positioning block (45) is fixed on the output end of the positioning cylinder (44) and located on the support platform (53), the positioning block (45) can abut against the brush strip and is driven by the positioning cylinder (44) to move towards or away from the central axis of the die (20).

4. The brush bar bending apparatus of claim 1, wherein Further comprising: A conveying belt (140) is horizontally arranged above the workbench (10), and the end of the moving direction of the conveying belt (140) is located directly above the bending area; An abutting plate (151) is located at the end of the moving direction of the conveying belt (140), the abutting plate (151) can abut against the conveying belt (140) to limit the movement of the conveying belt (140), and the abutting plate (151) is driven by a blocking cylinder (150) fixedly connected with the workbench (10); A blocking rod (160) is fixed above the conveying belt (140) by a support (170), the distance from the blocking rod (160) to the upper surface of the conveying belt (140) is equal to the thickness of the brush, and the blocking rod (160) is used for controlling the passing of a single brush strip.

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