CN111151607A - Shaping tool and shaping method for brake band of washing machine - Google Patents
Shaping tool and shaping method for brake band of washing machine Download PDFInfo
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- CN111151607A CN111151607A CN202010039699.8A CN202010039699A CN111151607A CN 111151607 A CN111151607 A CN 111151607A CN 202010039699 A CN202010039699 A CN 202010039699A CN 111151607 A CN111151607 A CN 111151607A
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- washing machine
- brake band
- forming
- conical surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
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- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention provides a shaping tool and a shaping method for a brake band of a washing machine, and aims to solve the problems of large shaping error and poor quality stability of the brake band of the washing machine. The plastic frock includes: the device comprises a frame body, a rotary driving device, a forming wheel, a linear movement driving device, a pressure equalizing support and a pressing wheel, wherein the frame body is provided with a working table; the rotary driving device is arranged on the frame body; the forming wheel is arranged on a main shaft of the rotary driving device; the circumference of the forming wheel is provided with a forming groove and a fixing structure; the pressure-equalizing support comprises a push plate, a compression spring, a connecting bolt and a pinch roller support, the push plate is fixedly arranged on the linear movement driving end, a threaded hole is formed in the push plate, a through hole is formed in the pinch roller support, the small end of the connecting bolt penetrates through the through hole, the compression spring is in threaded connection with the threaded hole, one end of the compression spring abuts against the pinch roller support, and the other end of the compression spring abuts against the push plate; the pinch roller is rotatably arranged on the pinch roller bracket, and a compaction structure opposite to the forming groove is arranged on the circumference of the pinch roller.
Description
Technical Field
The invention belongs to the field of processing and production of brake parts, and particularly relates to a shaping tool and a shaping method for a brake band of a washing machine.
Background
After the brake belt of the existing washing machine is processed, the brake belt needs to be shaped into an arc shape before being used, so that the friction material on the brake belt can be completely attached when braking is carried out, sufficient friction area and friction force are provided, the washing machine is safely decelerated and braked, and vibration, noise and abrasion during braking are reduced. The traditional processing technique mode is manual shaping or simple tool auxiliary shaping, the shaping error of the brake band of the washing machine is large, the quality stability and consistency of the shaped brake band are poor, and the brake effect of the product is unstable.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a shaping tool and a shaping method for a brake band of a washing machine, which are used to solve the problems in the prior art that the shaping error of the brake band of the washing machine is large, and the quality stability and consistency after shaping the brake band are poor, so that the braking effect of the product is unstable.
In order to achieve the above and other related objects, a first aspect of the present invention provides a shaping tool for a brake band of a washing machine, the brake band of the washing machine including a steel plate and a friction plate, the shaping tool comprising:
the upper part of the frame body is provided with a working table surface;
the rotary driving device is arranged on the frame body, and a main shaft of the rotary driving device extends upwards to the upper part of the working table;
the forming wheel is installed on the main shaft above the working table, a forming groove matched with the width of the brake band of the washing machine and a fixing structure capable of detachably fixing one end of the steel plate in the forming groove are arranged on the circumferential edge of the forming wheel, the radius of the forming groove is matched with the radius of the inner side of the shaped steel plate of the brake band of the washing machine, and the depth of the forming groove is matched with the thickness of the brake band of the washing machine;
the linear movement driving device is installed on the working table top, and the linear movement driving end can extend or retract along the radial direction of the forming wheel;
the pressure equalizing support comprises a push plate, a compression spring, a connecting bolt and a pinch roller support, the push plate is fixedly mounted on the linear movement driving end, a threaded hole matched with the connecting bolt is formed in the push plate, a through hole matched with the connecting bolt is formed in the pinch roller support, the small end of the connecting bolt sequentially penetrates through the through hole, the inner hole of the compression spring is in threaded connection with the threaded hole, and one end of the compression spring abuts against the pinch roller support while the other end abuts against the push plate;
the pressing wheel is rotatably arranged on the pressing wheel bracket, the rotating shaft is parallel to the main shaft, and a pressing structure opposite to the forming groove is arranged on the circumferential edge of the pressing wheel.
Preferably, the groove bottom of the forming groove comprises a first forming conical surface and a second forming conical surface, the large ends of the first forming conical surface and the second forming conical surface are opposite and intersect at a position where the center line of the brake band of the washing machine is correspondingly formed, a circular arc surface protruding outwards in the radial direction is arranged at the intersecting position, and two sides of the circular arc surface are in smooth transition with the first forming conical surface and the second forming conical surface respectively; the pressing structure comprises a first pressing conical surface and a second pressing conical surface, the small ends of the first pressing conical surface and the second pressing conical surface are opposite and intersect at a position corresponding to the center line of the brake band of the washing machine, and the first pressing conical surface and the second pressing conical surface are matched and matched with the first forming conical surface and the second forming conical surface respectively.
Further, the radius from the top of the arc surface to the central axis of the main shaft is 0.1-0.75 mm smaller than the radius of the inner circle of the shaped brake band.
Further, the radius of the arc surface is 50-55 mm.
Furthermore, one side that deviates from on the steel sheet the friction disc is provided with the strengthening rib, first compress tightly the conical surface with the crossing position of second compression conical surface is provided with dodges the groove of dodging of strengthening rib.
Furthermore, the included angle between the generatrix of the conical surface and the extension direction of the main shaft is 1.1-1.5 degrees.
Preferably, two sides of the compressing structure along the extension direction of the main shaft are respectively provided with a first rib and a second rib, the distance between the first rib and the second rib is matched with the edge thickness of the forming wheel, and the edge of the forming wheel is clamped between the first rib and the second rib during forming.
Preferably, a mounting hole is formed in one side end of the washing machine brake band, and the fixing structure is a threaded hole matched with the mounting hole.
Preferably, a pinch roller support guide channel is installed on the working table, and the pinch roller support slides and moves in the guide channel under the action of the linear movement driving end.
The second aspect of the present invention provides a method for shaping a brake band of a washing machine, comprising the steps of:
1) providing a rotatable forming wheel, wherein a forming groove capable of accommodating the brake belt of the washing machine and a fixing structure capable of detachably fixing one end of the steel plate in the forming groove are arranged on the circumferential edge of the forming wheel, the radius of the forming groove is matched with the radius of the inner side of the shaped brake belt of the washing machine, and the depth of the forming groove is matched with the thickness of the brake belt of the washing machine;
2) providing a linear movement driving device fixedly arranged at the side of the forming wheel, and enabling a linear movement driving end of the linear movement driving device to extend or retract along the radial direction of the forming wheel;
3) providing a pressure-equalizing support, wherein the pressure-equalizing support comprises a push plate, a compression spring, a connecting bolt and a pinch roller support, the push plate is fixedly arranged on the linear movement driving end, a threaded hole matched with the connecting bolt is formed in the push plate, a through hole matched with the connecting bolt is formed in the pinch roller support, the small end of the connecting bolt sequentially penetrates through the through hole, the inner hole of the compression spring is in threaded connection with the threaded hole, and one end of the compression spring abuts against the pinch roller support while the other end abuts against the push plate;
4) providing a pinch roller, enabling the pinch roller to be rotatably arranged on the pinch roller bracket, enabling a rotating shaft to be arranged in parallel with the main shaft, and arranging a compaction structure opposite to the forming groove on the circumferential edge of the pinch roller;
5) the washing machine brake belt is clamped in the forming groove, and one end of the washing machine brake belt is fixed through a fixing piece arranged on the fixing structure;
6) starting a linear moving device to enable the pressing wheel to be in contact with the edge of the forming wheel;
7) the linear moving driving end continues to extend out of the set length, and a spring in the pressure equalizing support is stressed and compressed;
8) rotating a main shaft of the rotary driving device by a set angle;
9) retracting the pinch roller;
10) and detaching the fixing piece at one end of the washing machine brake belt, and taking out the washing machine brake belt from the forming groove.
Preferably, the groove bottom of the forming groove comprises a first forming conical surface and a second forming conical surface, the large ends of the first forming conical surface and the second forming conical surface face each other and intersect at a position where the center line of the brake band of the washing machine is correspondingly formed, a radially outwardly convex arc surface is arranged at the intersecting position, and two sides of the arc surface are in smooth transition with the first forming conical surface and the second forming conical surface respectively.
Further, the radius from the top of the arc surface to the central axis of the main shaft is 0.5-0.75 mm smaller than the radius of the inner circle of the shaped brake band.
Further, the radius of the arc surface is 50-55 mm.
Preferably, the method for reshaping the brake band of a washing machine according to claim 11, wherein the pressing structure comprises a first pressing tapered surface and a second pressing tapered surface, and the small ends of the first pressing tapered surface and the second pressing tapered surface face each other and intersect at a position corresponding to the centerline of the brake band of the washing machine.
Furthermore, the included angle between the generatrix of the conical surface and the extension direction of the main shaft is 1.1-1.5 degrees.
As mentioned above, the shaping tool and the shaping method of the washing machine brake band are characterized in that during shaping, the washing machine brake band is clamped into a forming groove on a forming wheel, one end of the washing machine brake band is fixed through a fixing piece arranged on a fixing structure, a linear movement driving device pushes a pressure equalizing support to move forwards at a constant speed along a cavity, after a pressing wheel is completely contacted with the forming wheel, the linear movement driving device continues to extend out of a set length, a spring in the pressure equalizing support is compressed under the force, a rotation driving device is started, a main shaft drives the forming wheel to rotate by a set angle, and therefore shaping of the washing machine brake band is completed, after shaping is completed, the pressing wheel retracts, the fixing piece at one end of the washing machine brake band is detached, and the washing machine brake band is taken out of the forming groove. The tool and the shaping method not only effectively improve the product performance and quality, ensure the consistency and reliability of the product, but also reduce the labor intensity, improve the qualification rate of the brake band and reduce the production cost. The quality consistency and stability of the brake band of the washing machine processed by the tool and the method in the aspects of parallelism, flatness, appearance size and the like are greatly improved, and the performance indexes of the product such as friction coefficient, abrasion and abrasion are greatly improved.
Drawings
FIG. 1a is a top view of a washing machine before shaping a brake band;
FIG. 1b is a cross-sectional view A-A of FIG. 1 a;
FIG. 1c is a cross-sectional view of a brake band of the washing machine;
FIG. 2 is a schematic view of a vertical structure of the shaping tool of the present invention;
FIG. 3 is a schematic top view of the shaping tool of the present invention;
FIG. 4 is a schematic illustration of the position of the forming wheel, washing machine brake band and pinch wheel structure in the truing state;
FIG. 5 is a schematic view of the construction of the circumferential edge of the forming wheel;
FIG. 6 is a schematic view of the circumferential edge of the pinch roller;
fig. 7 is a schematic structural view of the frame body.
In the figure:
1 shaping tool
10 frame body
11 working table
12 guide channel
13 left side plate
14 Top plate
15 right side plate
20 rotary driving device
21 spindle
30 linear movement driving device
40 pinch roller
41 pressing structure
42 first rib
43 second flange
411 first pressing conical surface
412 avoiding groove
413 second pressing conical surface
50 pressure-equalizing support
51 pinch roller support
52 connecting bolt
53 compression spring
54 push plate
60 forming wheel
61 shaped groove
611 groove bottom
6111 first forming cone
6112 arc surface
6112 second forming cone
70 fastener
2 washing machine brake band
21 steel plate
211 mounting hole
212 reinforcing bar
22 friction plate
Detailed Description
After the brake belt of the washing machine is processed, the brake belt needs to be shaped into an arc shape before being used, so that friction materials on the brake belt can be completely attached when braking is carried out, sufficient friction area and friction force are provided, the washing machine is safely decelerated and braked, and vibration, noise and abrasion during braking are reduced. As shown in fig. 1a, 1b and 1c, a brake band 2 of a conventional washing machine includes a steel plate 21 and a friction plate 22, the steel plate is provided with a plurality of mounting holes 211 and raised reinforcing ribs 212, and the conventional processing method is manual shaping or shaping assisted by a simple tool, which has the following problems:
1) the radian of the brake band is not standard, the deviation from the outer arc of the mating part brake wheel is large, and the complete fitting cannot be ensured;
2) the brake belt is easy to deform in the shaping process, so that the middle part is raised, two sides are outwards inclined, only the middle part is contacted with the brake wheel during braking, the braking area is reduced, the braking effect is poor, the material surface of the brake belt is eccentrically worn, the braking effect is reduced, noise is easy to generate, the early over-abrasion of the brake belt is caused, and the service life is shortened; (ii) a
3) The quality stability and consistency of the shaped brake band are poor, so that the brake effect of the product is unstable;
4) the product has high rejection rate and defective rate in the shaping process, the rejection rate reaches 5-7%, and the defective rate reaches 13-17%;
5) the processing efficiency is low, and the yield is 50-65 pieces/hour.
In view of the above disadvantages, the present embodiment provides a shaping tool and a shaping method for a braking belt of a washing machine, which are used to solve the problems in the prior art that the shaping error of the braking belt of the washing machine is large, and the quality stability and consistency after the shaping of the braking belt are poor, so that the braking effect of a product is unstable.
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It should be noted that the drawings provided in the present embodiment are only schematic and illustrate the basic idea of the present invention, and although the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation, the form, quantity and proportion of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Example one
As shown in fig. 2 to 7, the present invention provides a shaping tool 1 for a brake band of a washing machine, wherein the brake band 2 of the washing machine comprises a steel plate and a friction plate, and the shaping tool 1 comprises:
the device comprises a frame body 10, wherein a working table surface 11 is arranged at the upper part of the frame body 10;
the rotary driving device 20 is installed on the frame body 10, and a main shaft 21 of the rotary driving device 20 extends upwards to the upper part of the working table 11;
the forming wheel 60 is installed on the main shaft 21 above the worktable 11, the circumferential edge of the forming wheel 60 is provided with a forming groove 61 matched with the width of the washing machine brake band 2 and a fixing structure capable of detachably fixing one end of the steel plate in the forming groove 61, the radius R of the forming groove 61 is matched with the radius of the inner side of the steel plate of the shaped washing machine brake band 2, and the depth C of the forming groove 61 is matched with the thickness of the washing machine brake band 2;
the linear movement driving device 30 is installed on the surface of the working table 11, and the linear movement driving end can extend or retract along the radial direction of the forming wheel 60;
the pressure equalizing support 50 comprises a push plate 54, a compression spring 53, a connecting bolt 52 and a pinch roller support 51, wherein the push plate 54 is fixedly mounted on the linear movement driving end, a threaded hole matched with the connecting bolt 52 is formed in the push plate 54, a through hole matched with the connecting bolt 52 is formed in the pinch roller support 51, the small end of the connecting bolt 52 sequentially penetrates through the through hole, the inner hole of the compression spring 53 is in threaded connection with the threaded hole, and one end of the compression spring 53 abuts against the pinch roller support 51 and the other end abuts against the push plate 54;
the pressing wheel 40 is rotatably mounted on the pressing wheel bracket 51, the rotating shaft is arranged in parallel with the main shaft 21, and a pressing structure 41 opposite to the forming groove 61 is arranged on the circumferential edge of the pressing wheel 40.
When the shaping tool 1 for the braking belt of the washing machine is used for shaping, firstly, the braking belt 2 of the washing machine is clamped into a forming groove 61 on a forming wheel 60, one end of the braking belt 2 of the washing machine is fixed through a fixing piece 70 arranged on a fixed structure, a linear movement driving device 30 pushes a pressure equalizing support 50 to move forwards at a constant speed along a cavity, after a pressing wheel 40 is completely contacted with the forming wheel 60, the linear movement driving device 30 continuously extends out for a set length, a spring in the pressure equalizing support 50 is stressed and compressed, a rotary driving device 20 is started, a main shaft 21 drives the forming wheel 60 to rotate for a set angle, the shaping of the braking belt 2 of the washing machine is completed, after the shaping is completed, the pressing wheel 40 retracts, the fixing piece 70 at one end of the braking belt 2 of the washing machine is detached, and the braking belt 2 of the washing machine is taken out from. The tool and the shaping method not only effectively improve the product performance and quality, ensure the consistency and reliability of the product, but also reduce the labor intensity, improve the qualification rate of the brake band and reduce the production cost. The quality consistency and stability of the washing machine brake band 2 processed by the tool and the method in the aspects of parallelism, flatness, appearance size and the like are greatly improved, and the performance indexes of the product such as friction coefficient, abrasion and abrasion are greatly improved.
As an example of the present invention, the width B of the forming groove 61 in the present embodiment is 0.15 to 0.25mm larger than the width of the washing machine brake band 2.
According to the invention, a pinch roller 40 shaft is fixedly arranged on a pinch roller bracket 51, a rolling bearing is arranged on the pinch roller 40 shaft and can be rotatably arranged on the pinch roller bracket 51, and the outer ring of the rolling bearing is matched with the inner hole of the pinch roller 40. This arrangement allows for more flexibility in the rotation of the pinch rollers 40.
The compression spring 53 in the invention can be any compression spring 53 structure capable of bearing a set pressing force, as an embodiment of the invention, the compression amount of the compression spring 53 in the embodiment is 10-15mm, and the pressure is 650 plus 850N, so that the pressure is moderate and constant when the brake band is shaped, and the quality stability is ensured.
The groove bottom 611 of the forming groove 61 in the shaping tool 1 of the present invention may also be a conventional structure such as a cylindrical surface, preferably, the groove bottom 611 of the forming groove 61 includes a first forming conical surface 6111 and a second forming conical surface 6112, the large ends of the first forming conical surface 6111 and the second forming conical surface 6112 are opposite and intersect at a position corresponding to the center line of the forming brake band 2 of the washing machine, the intersecting position is provided with an arc surface 6112 protruding outward in the radial direction, and two sides of the arc surface 6112 are in smooth transition with the first forming conical surface 6111 and the second forming conical surface 6112 respectively; the pressing structure 41 comprises a first pressing conical surface 411 and a second pressing conical surface 413, the small ends of the first pressing conical surface 411 and the second pressing conical surface 413 face each other and intersect at a position corresponding to the center line of the washing machine brake band 2, and the first pressing conical surface 411 and the second pressing conical surface 413 are matched and matched with the first forming conical surface 6111 and the second forming conical surface 6112 respectively. In order to obtain a better shaping effect, in this embodiment, a radius from the top of the arc surface 6112 to the central axis of the spindle 21 is smaller than a radius of an inner circle of the shaped brake band by 0.5 to 0.75mm, a radius of the arc surface 6112 is 50 to 55mm, and included angles between generatrices of the first forming conical surface 6111, the second forming conical surface 6112, the first pressing conical surface 411 and the second pressing conical surface 413 and an extending direction of the spindle 21 are all 1.1 to 1.5 °. The setting method can effectively compensate the rebound quantity of the brake band after shaping, and ensures the shaping quality of the brake band.
Considering that a reinforcing rib is disposed on a side of the steel plate of the braking band 2 of the existing washing machine, which is away from the friction plate, it is preferable that an avoiding groove 412 for avoiding the reinforcing rib is disposed at a position where the first pressing conical surface 411 and the second pressing conical surface 413 intersect.
In order to facilitate the smooth placement of the washing machine brake band 2, the width of the forming groove 61 is 0.15-0.25mm larger than the width of the washing machine brake band 2, and the depth of the forming groove 61 is equal to the thickness of the washing machine brake band 2, so that the brake band is well guaranteed not to deform or be damaged in the shaping process, and the shaped brake band does not rebound.
If the linear motion driving device 30 with a guiding function is adopted, the pressing wheel 40 in the tooling of the present invention may not be provided with a rib structure in principle, but in order to better ensure the shaping stability, it is preferable that in this embodiment, two sides of the pressing structure 41 along the extending direction of the main shaft 21 are respectively provided with a first rib 42 and a second rib 43, the distance D between the first rib 42 and the second rib 43 is matched with the edge thickness of the forming wheel 60, and the edge of the forming wheel 60 is clamped between the first rib 42 and the second rib 43 during shaping.
The fixing mode of the washing machine brake band 2 in the tool of the invention can be various, as long as the washing machine brake band 2 can be detachably fixed, but considering that the end part of one side of the existing washing machine brake band 2 is provided with a plurality of mounting holes, preferably, the fixing structure is a threaded hole matched with the mounting holes, and the small end of the bolt fixing piece 70 is connected with the threaded hole after penetrating through the mounting hole during fixing. In this way, a quick fixing and removal of the end of the braking band 2 of the washing machine can be achieved.
In view of the importance of the pressing direction, in order to better ensure that the pressing force does not deviate, preferably, a guide channel 12 of a pressing wheel bracket 51 is further installed on the working table 11 of the embodiment, the guide channel 12 is defined by an upper fixing plate, a working table, a left side plate 13 and a right side plate 15, the outer shape of the pressing wheel bracket 51 matches with the inner shape of the guide channel 12, and the pressing wheel bracket 51 slides and moves in the guide channel 12 under the action of the linear movement driving end.
The rotation driving device 20 in the present invention may be a motor or a structure of a motor and a speed reducer that can realize rotation driving, or may be a rotating cylinder with a certain rotation angle, as an example of the present invention, the rotation driving device 20 in the present embodiment is a motor.
The linear motion driving device 30 of the present invention may be a conventional linear motion driving device, such as a pneumatic cylinder, a lead screw assembly with a hydraulic cylinder having a certain load-bearing capacity, etc., and as an example of the present invention, the linear motion driving device 30 of the present embodiment is a pneumatic cylinder.
Example two
The embodiment provides a shaping method of a washing machine brake band 2, which comprises the following steps:
1) providing a rotatable forming wheel 60, wherein a forming groove 61 capable of accommodating the washing machine brake band 2 and a fixing structure capable of detachably fixing one end of the steel plate in the forming groove 61 are arranged on the circumferential edge of the forming wheel 60, the radius of the forming groove 61 is matched with the radius of the inner side of the shaped washing machine brake band 2, and the depth of the forming groove 61 is matched with the thickness of the washing machine brake band 2;
2) providing a linear motion driving device 30 fixedly installed at the side of the forming wheel 60 and enabling the linear motion driving end to extend or retract along the radial direction of the forming wheel 60;
3) providing a pressure equalizing support 50, wherein the pressure equalizing support 50 comprises a push plate 54, a compression spring 53, a connecting bolt 52 and a pinch roller support 51, the push plate 54 is fixedly mounted on the linear movement driving end, a threaded hole matched with the connecting bolt 52 is formed in the push plate 54, a through hole matched with the connecting bolt 52 is formed in the pinch roller support 51, the small end of the connecting bolt 52 sequentially penetrates through the through hole, the inner hole of the compression spring 53 is in threaded connection with the threaded hole, and one end of the compression spring 53 abuts against the pinch roller support 51 and the other end abuts against the push plate 54;
4) providing a pinch roller 40, enabling the pinch roller 40 to be rotatably installed on the pinch roller bracket 51, arranging a rotating shaft in parallel with the main shaft 21, and arranging a compaction structure 41 opposite to the forming groove 61 on the circumferential edge of the pinch roller 40;
5) the washing machine brake band 2 is clamped in the forming groove 61, and one end of the washing machine brake band is fixed by a fixing piece 70 arranged on the fixing structure;
6) the linear moving device is started to enable the pressing wheel 40 to be in contact with the edge of the forming wheel 60;
7) the linear moving driving end continues to extend out of the set length, and a spring in the pressure equalizing support 50 is stressed and compressed;
8) rotating a main shaft 21 of the rotary drive device 20 by a set angle;
9) retracting the pinch roller 40;
10) the fixing piece 70 at one end of the washing machine brake band 2 is detached, and the washing machine brake band 2 is taken out from the forming groove 61.
The groove bottom 611 of the forming groove 61 in the method of this embodiment may also be a conventional structure such as a cylindrical surface, and preferably, the groove bottom 611 of the forming groove 61 in this embodiment includes a first forming conical surface 6111 and a second forming conical surface 6112, large ends of the first forming conical surface 6111 and the second forming conical surface 6112 face each other and intersect at a position corresponding to a center line of the forming brake band 2 of the washing machine, a radially outwardly convex arc surface 6112 is disposed at the intersection position, and two sides of the arc surface 6112 are in smooth transition with the first forming conical surface 6111 and the second forming conical surface 6112 respectively; the pressing structure 41 comprises a first pressing conical surface 411 and a second pressing conical surface 413, the small ends of the first pressing conical surface 411 and the second pressing conical surface 413 face each other and intersect at a position corresponding to the center line of the washing machine brake band 2, and the first pressing conical surface 411 and the second pressing conical surface 413 are matched and matched with the first forming conical surface 6111 and the second forming conical surface 6112 respectively. In order to obtain a better shaping effect, in this embodiment, a radius from the top of the arc surface 6112 to the central axis of the spindle 21 is smaller than a radius of an inner circle of the shaped brake band by 0.5 to 0.75mm, a radius of the arc surface 6112 is 50 to 55mm, and included angles between generatrices of the first forming conical surface 6111, the second forming conical surface 6112, the first pressing conical surface 411 and the second pressing conical surface 413 and an extending direction of the spindle 21 are all 1.1 to 1.5 °. The setting method can effectively compensate the rebound quantity of the brake band after shaping, and ensures the shaping quality of the brake band.
In conclusion, the deviation between the radian of the brake band and the outer arc of the brake wheel of the brake band of the washing machine integrally formed by the tool and the method is within +/-0.5 mm degree; the straightness of the braking belt is within 0.1 mm; the flatness of each point of the braking band is within 0.1 mm; the waste product and defective rate of the product in the shaping process is greatly reduced, the waste product is 1 per mill, and the defective rate reaches 5 per mill; the processing efficiency is greatly improved, 350 pieces and 370 pieces per hour; the back plate and the material sheet of the brake band are well guaranteed not to be damaged during shaping; therefore, the invention can effectively solve the problems of large shaping error of the brake band of the washing machine, poor quality stability and consistency after shaping of the brake band and unstable braking effect of a product in the prior art, thereby having high utilization value and use significance.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Many modifications may be made to the present invention without departing from the spirit or scope of the general inventive concept, and it will be apparent to those skilled in the art that changes and modifications may be made to the above-described embodiments without departing from the spirit or scope of the invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a washing machine brake band plastic frock, washing machine brake band includes steel sheet and friction disc, its characterized in that, the plastic frock includes:
the upper part of the frame body is provided with a working table surface;
the rotary driving device is arranged on the frame body, and a main shaft of the rotary driving device extends upwards to the upper part of the working table;
the forming wheel is installed on the main shaft above the working table, a forming groove matched with the width of the brake band of the washing machine and a fixing structure capable of detachably fixing one end of the steel plate in the forming groove are arranged on the circumferential edge of the forming wheel, the radius of the forming groove is matched with the radius of the inner side of the shaped steel plate of the brake band of the washing machine, and the depth of the forming groove is matched with the thickness of the brake band of the washing machine;
the linear movement driving device is installed on the working table top, and the linear movement driving end can extend or retract along the radial direction of the forming wheel;
the pressure equalizing support comprises a push plate, a compression spring, a connecting bolt and a pinch roller support, the push plate is fixedly mounted on the linear movement driving end, a threaded hole matched with the connecting bolt is formed in the push plate, a through hole matched with the connecting bolt is formed in the pinch roller support, the small end of the connecting bolt sequentially penetrates through the through hole, the inner hole of the compression spring is in threaded connection with the threaded hole, and one end of the compression spring abuts against the pinch roller support while the other end abuts against the push plate;
the pressing wheel is rotatably arranged on the pressing wheel bracket, the rotating shaft is parallel to the main shaft, and a pressing structure opposite to the forming groove is arranged on the circumferential edge of the pressing wheel.
2. The shaping tool for the brake band of the washing machine as claimed in claim 1, wherein the bottom of the shaping groove comprises a first shaping conical surface and a second shaping conical surface, the large ends of the first shaping conical surface and the second shaping conical surface face each other and intersect at a position where the center line of the brake band of the washing machine is correspondingly shaped, a radially outwardly convex arc surface is arranged at the intersection position, and two sides of the arc surface are respectively in smooth transition with the first shaping conical surface and the second shaping conical surface; the pressing structure comprises a first pressing conical surface and a second pressing conical surface, the small ends of the first pressing conical surface and the second pressing conical surface are opposite and intersect at a position corresponding to the center line of the brake band of the washing machine, and the first pressing conical surface and the second pressing conical surface are matched and matched with the first forming conical surface and the second forming conical surface respectively.
3. The shaping tool for the brake band of the washing machine as claimed in claim 2, wherein the radius from the top of the arc surface to the central axis of the spindle is 0.5-0.75 mm smaller than the radius of the inner circle of the shaped brake band.
4. The shaping tool for the brake band of the washing machine as claimed in claim 2, wherein the radius of the arc surface is 50-55 mm.
5. The washing machine brake band shaping tool according to claim 2, wherein a reinforcing rib is arranged on one side of the steel plate, which is far away from the friction plate, and an avoiding groove for avoiding the reinforcing rib is arranged at the intersection position of the first pressing conical surface and the second pressing conical surface.
6. The shaping tool for the brake band of the washing machine as claimed in claim 2, wherein an included angle between a generatrix of the conical surface and the extension direction of the main shaft is 1.1-1.5 °.
7. The washing machine brake band shaping tool according to claim 1, wherein a first rib and a second rib are respectively arranged on two sides of the compression structure along the extension direction of the main shaft, the distance between the first rib and the second rib is matched with the edge thickness of the forming wheel, and the edge of the forming wheel is clamped between the first rib and the second rib during forming.
8. The washing machine brake band shaping tool as claimed in claim 1, wherein a mounting hole is formed in one side end of the washing machine brake band, and the fixing structure is a threaded hole matched with the mounting hole.
9. The washing machine brake band shaping tool according to claim 1, wherein a pinch roller bracket guide channel is mounted on the working table, and the pinch roller bracket slides and moves in the guide channel under the action of the linear movement driving end.
10. A shaping method of a brake band of a washing machine is characterized by comprising the following steps:
1) providing a rotatable forming wheel, wherein a forming groove capable of accommodating the brake belt of the washing machine and a fixing structure capable of detachably fixing one end of the steel plate in the forming groove are arranged on the circumferential edge of the forming wheel, the radius of the forming groove is matched with the radius of the inner side of the shaped brake belt of the washing machine, and the depth of the forming groove is matched with the thickness of the brake belt of the washing machine;
2) providing a linear movement driving device fixedly arranged at the side of the forming wheel, and enabling a linear movement driving end of the linear movement driving device to extend or retract along the radial direction of the forming wheel;
3) providing a pressure-equalizing support, wherein the pressure-equalizing support comprises a push plate, a compression spring, a connecting bolt and a pinch roller support, the push plate is fixedly arranged on the linear movement driving end, a threaded hole matched with the connecting bolt is formed in the push plate, a through hole matched with the connecting bolt is formed in the pinch roller support, the small end of the connecting bolt sequentially penetrates through the through hole, the inner hole of the compression spring is in threaded connection with the threaded hole, and one end of the compression spring abuts against the pinch roller support while the other end abuts against the push plate;
4) providing a pinch roller, enabling the pinch roller to be rotatably arranged on the pinch roller bracket, enabling a rotating shaft to be arranged in parallel with the main shaft, and arranging a compaction structure opposite to the forming groove on the circumferential edge of the pinch roller;
5) the washing machine brake belt is clamped in the forming groove, and one end of the washing machine brake belt is fixed through a fixing piece arranged on the fixing structure;
6) starting a linear moving device to enable the pressing wheel to be in contact with the edge of the forming wheel;
7) the linear moving driving end continues to extend out of the set length, and a spring in the pressure equalizing support is stressed and compressed;
8) rotating a main shaft of the rotary driving device by a set angle;
9) retracting the pinch roller;
10) and detaching the fixing piece at one end of the washing machine brake belt, and taking out the washing machine brake belt from the forming groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039699.8A CN111151607A (en) | 2020-01-15 | 2020-01-15 | Shaping tool and shaping method for brake band of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039699.8A CN111151607A (en) | 2020-01-15 | 2020-01-15 | Shaping tool and shaping method for brake band of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111151607A true CN111151607A (en) | 2020-05-15 |
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ID=70563590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010039699.8A Pending CN111151607A (en) | 2020-01-15 | 2020-01-15 | Shaping tool and shaping method for brake band of washing machine |
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| Country | Link |
|---|---|
| CN (1) | CN111151607A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112191710A (en) * | 2020-09-29 | 2021-01-08 | 安东石油技术（集团）有限公司 | Filter sleeve end shaping equipment |
-
2020
- 2020-01-15 CN CN202010039699.8A patent/CN111151607A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112191710A (en) * | 2020-09-29 | 2021-01-08 | 安东石油技术（集团）有限公司 | Filter sleeve end shaping equipment |
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