阅读说明：本技术 一种定子线圈端部热压成型装置及成型方法 (Hot-press forming device and forming method for end part of stator coil ) 是由 钱士杰 岳海峰 朱斌华 何德林 严日生 于 2021-07-06 设计创作，主要内容包括：本发明公开了一种定子线圈端部热压成型装置及成型方法,该定子线圈端部热压成型装置,包括支撑座、胶化装置、安装座和加热成型组件,支撑座的上部安装有若干支撑架,胶化装置包括第一支撑块、第一加热板、铰接件、抵触块、机械压紧头和压块,第一支撑块安装于支撑座的上部,第一加热板安装于第一支撑块的上部,铰接件安装于第一支撑块的侧部,抵触块安装于铰接件的侧部,抵触块与第一加热板的侧壁相抵触,机械压紧头安装于铰接件的内侧,压块安装于机械压紧头的输出端,压块的下部与第一加热板的上部相对,加热成型组件包括锥型模架和若干加热液压夹。本发明中,简便的实现多道工序的集成,减少占地面积。(The invention discloses a stator coil end hot-press molding device and a molding method, the stator coil end hot-press molding device comprises a supporting seat, a gelling device, a mounting seat and a hot-press molding assembly, wherein the upper part of the supporting seat is provided with a plurality of supporting frames, the gelling device comprises a first supporting block and a first heating plate, the articulated elements, the contact block supports, mechanical pressing head and briquetting, first supporting block is installed in the upper portion of supporting seat, first hot plate is installed in the upper portion of first supporting block, the articulated elements is installed in the lateral part of first supporting block, the lateral part in the articulated elements is installed to the conflict piece, the contact block supports with the lateral wall of first hot plate inconsistent, mechanical pressing head is installed in the inboard of articulated elements, the briquetting is installed in the output of mechanical pressing head, the lower part of briquetting is relative with the upper portion of first hot plate, the heating shaping subassembly includes tapered die carrier and a plurality of heating hydraulic clamp. In the invention, the integration of a plurality of processes is simply realized, and the occupied area is reduced.)

1. A stator coil end hot press molding device is characterized by comprising:

the supporting seat (100), the upper part of the supporting seat (100) is provided with a plurality of supporting frames (110);

a gelling device (200), wherein the gelling device (200) comprises a first supporting block (210), a first heating plate (220), a hinge piece (230), a collision block (240), a mechanical pressing head (250) and a pressing block (260), the first supporting block (210) is installed at the upper part of the supporting seat (100), the first heating plate (220) is installed at the upper part of the first supporting block (210), the hinge (230) is installed at a side of the first support block (210), the contact block (240) is installed at the side of the hinge (230), the contact block (240) is contacted with the side wall of the first heating plate (220), the mechanical compression head (250) is arranged at the inner side of the hinge piece (230), the pressing block (260) is arranged at the output end of the mechanical pressing head (250), the lower part of the pressing block (260) is opposite to the upper part of the first heating plate (220);

a mounting seat (300), wherein the mounting seat (300) is mounted at the upper part of the supporting seat (100) adjacent to the gelling device (200);

the heating forming assembly (400) comprises a conical die carrier (410) and a plurality of heating hydraulic clamps (420), the conical die carrier (410) is arranged on the upper portion of the mounting base (300), and the heating hydraulic clamps (420) are respectively arranged on the upper portions of the conical die carrier (410).

2. The stator coil end hot press molding apparatus as claimed in claim 1, wherein: the supporting seat (100) comprises a first T-shaped groove (120), a second T-shaped groove (130) and a third T-shaped groove (140), the first T-shaped groove (120) and the second T-shaped groove (130) are respectively parallel to the third T-shaped groove (140), and a gap is formed between the first T-shaped groove (120) and the second T-shaped groove (130).

3. The stator coil end hot press molding apparatus as claimed in claim 1, wherein: the novel brake shoe is characterized by further comprising an operation box (500), wherein the operation box (500) comprises a bottom plate (510), universal brake wheels (520), a supporting column (530) and a box body (540), the universal brake wheels (520) are installed on the lower portion of the bottom plate (510), the universal brake wheels (520) are located on the inner side of the supporting seat (100), the supporting column (530) is installed on the upper portion of the bottom plate (510), and the box body (540) is installed on the upper portion of the supporting column (530).

4. The stator coil end hot press molding apparatus as claimed in claim 1, wherein: through hole (211) have been seted up in the middle part of first supporting block (210), slide rail (212) are installed to first supporting block (210) neighbouring the lateral wall of through hole (211).

5. The stator coil end hot press molding apparatus as claimed in claim 4, wherein: the hinge assembly (230) comprises a first cross beam (231), a sliding frame (232), two first connecting rods (233), two second connecting rods (234) and a second cross beam (235), the first cross beam (231) penetrates through the middle of the through hole (211), the sliding frame (232) is installed on the upper portion of the first cross beam (231), the sliding frame (232) is installed on the side portion of the sliding rail (212) in a sliding mode, the two first connecting rods (233) are installed at two ends of the first cross beam (231) in a rotating mode, the two second connecting rods (234) are installed at the end portions of the two first connecting rods (233) in a rotating mode, and the end portions of the two second connecting rods (234) are connected with two ends of the second cross beam (235) through pin shafts (236).

6. The stator coil end hot press molding apparatus as claimed in claim 5, wherein: the contact block (240) is arranged on the side of the first connecting rod (233), and the mechanical pressing head (250) is arranged on the lower portion of the second cross beam (235).

7. The stator coil end hot press molding apparatus as claimed in claim 1, wherein: the taper die carrier (410) includes mounting panel (411), two arcs (412), a plurality of supporting beam (413) and conductor bar (414), mounting panel (411) install in the upper portion of mount pad (300), two arc (412) all install in the upper portion of mounting panel (411), it is a plurality of supporting beam (413) install in respectively in two between arc (412), the one end of conductor bar (414) is connected in one the lower part of arc (412), the other end of conductor bar (414) is connected in another the upper portion of arc (412).

8. The stator coil end hot press molding apparatus as claimed in claim 7, wherein: the heating hydraulic clamp (420) comprises a U-shaped beam (421), a first hydraulic cylinder (422), a pressure head (423), a second hydraulic cylinder (424), a second heating plate (425) and a third heating plate (426), the U-shaped beam (421) is arranged on the upper part of the supporting beam (413), the first hydraulic cylinder (422) is arranged on the central upper part of the U-shaped beam (421), the pressure head (423) is arranged at the output end of the first hydraulic cylinder (422), the second hydraulic cylinder (424) is arranged on the side part of the U-shaped beam (421), the second heating plate (425) is installed at the output end of the second hydraulic cylinder (424), the third heating plate (426) is installed at the side of the U-shaped beam (421), the second heating plate (425) and the third heating plate (426) are clamped at two sides of the wire guide rod (414), and the pressure head (423) is positioned at the upper part of the wire guide rod (414).

9. The stator coil end hot press molding apparatus as claimed in claim 8, wherein: a first heat insulation plate (427) is arranged between the pressure head (423) and the output end of the first hydraulic cylinder (422), a second heat insulation plate (428) is arranged between the second heating plate (425) and the output end of the second hydraulic cylinder (424), and a third heat insulation plate (429) is arranged between the third heating plate (426) and the U-shaped beam (421).

10. A stator coil end hot press molding method is characterized in that: the method specifically comprises the following steps:

s1, wire transmission: the coils are placed at the upper parts of the plurality of support frames and drive the coils to move through an external traction device;

s2, primary gelling: the coil moves to the upper part of the first heating plate, the pressing block is driven to move through the operation of the mechanical pressing head, the coil is fixed and pressed, and the first heating plate is used for heating to realize primary heating gelatinization;

s3, heating and forming: and (3) the gelled coil is heated for the first time, moves along the conical die frame, and is heated again through the heating hydraulic clamp, so that the hot press molding is completed.

Technical Field

The invention relates to the technical field of stator coil hot-press forming, in particular to a stator coil end hot-press forming device and a stator coil end hot-press forming method.

Background

The stator bar is used as a common part in a generator stator, and along with the wider application of the generator, the production of the stator bar is developed at a higher speed.

The coil is an important component of the stator, which is generally formed by winding a wire rod, and after the coil is produced, the end portion needs to be hot-pressed and gelated to ensure the quality of the subsequent generator.

The existing thermocompression gelatination is generally formed by combining a plurality of devices and a plurality of die forming processes, so that the occupied space of the devices is large, the cost of forming dies is high, the forming precision cannot be guaranteed, and the forming quality of a winding bar is influenced.

Disclosure of Invention

Technical problem to be solved

The invention can solve the problems of large occupied area, low forming precision, high mold price and difficult guarantee of forming quality of the existing hot-press forming equipment.

(II) technical scheme

In order to achieve the above object, in one aspect, the present invention provides a stator coil end hot press forming apparatus, which includes a support base, a gelling device, a mounting base, and a heating forming assembly.

And a plurality of supporting frames are arranged on the upper part of the supporting seat.

The gelling device includes first supporting block, first hot plate, articulated elements, conflict piece, mechanical pressing head and briquetting, first supporting block install in the upper portion of supporting seat, first hot plate install in the upper portion of first supporting block, the articulated elements install in the lateral part of first supporting block, conflict piece install in the lateral part of articulated elements, conflict piece with the lateral wall of first hot plate is inconsistent, mechanical pressing head install in the inboard of articulated elements, the briquetting install in the output of mechanical pressing head, the lower part of briquetting with the upper portion of first hot plate is relative.

The mounting seat is mounted on the upper portion, adjacent to the gelling device, of the supporting seat.

The heating forming assembly comprises a conical die frame and a plurality of heating hydraulic clamps, the conical die frame is arranged on the upper portion of the mounting base, and the heating hydraulic clamps are respectively arranged on the upper portions of the conical die frame.

As a preferable technical scheme of the present invention, the support seat includes a first T-shaped groove, a second T-shaped groove, and a third T-shaped groove, the first T-shaped groove and the second T-shaped groove are respectively arranged in parallel with the third T-shaped groove, and a gap is formed between the first T-shaped groove and the second T-shaped groove.

As a preferred technical scheme of the invention, the brake device further comprises an operation box, wherein the operation box comprises a bottom plate, a universal brake wheel, a support column and a box body, the universal brake wheel is installed at the lower part of the bottom plate, the universal brake wheel is positioned at the inner side of the support seat, the support column is installed at the upper part of the bottom plate, and the box body is installed at the upper part of the support column.

As a preferable technical scheme of the present invention, a through hole is formed in the middle of the first support block, and a slide rail is mounted on the side wall of the first support block adjacent to the through hole.

As a preferable technical solution of the present invention, the hinge member includes a first cross beam, a sliding frame, two first connecting rods, two second connecting rods, and a second cross beam, the first cross beam passes through the middle of the through hole, the sliding frame is mounted on the upper portion of the first cross beam, the sliding frame is slidably mounted on the side portion of the sliding rail, the two first connecting rods are rotatably mounted on the two ends of the first cross beam, the two second connecting rods are rotatably mounted on the end portions of the two first connecting rods, and the end portions of the two second connecting rods are connected to the two ends of the second cross beam through pin shafts, respectively.

As a preferable technical solution of the present invention, the abutting block is mounted on a side portion of the first connecting rod, and the mechanical compression head is mounted on a lower portion of the second cross member.

As a preferable technical solution of the present invention, the tapered die carrier includes a mounting plate, two arc-shaped plates, a plurality of support beams, and a wire guide rod, the mounting plate is mounted on an upper portion of the mounting base, the two arc-shaped plates are both mounted on an upper portion of the mounting plate, the plurality of support beams are respectively mounted between the two arc-shaped plates, one end of the wire guide rod is connected to a lower portion of one of the arc-shaped plates, and the other end of the wire guide rod is connected to an upper portion of the other arc-shaped plate.

As a preferred embodiment of the present invention, the heating hydraulic clamp includes a U-shaped beam, a first hydraulic cylinder, a pressing head, a second hydraulic cylinder, a second heating plate, and a third heating plate, the U-shaped beam is mounted on the upper portion of the support beam, the first hydraulic cylinder is mounted on the central upper portion of the U-shaped beam, the pressing head is mounted on the output end of the first hydraulic cylinder, the second hydraulic cylinder is mounted on the side portion of the U-shaped beam, the second heating plate is mounted on the output end of the second hydraulic cylinder, the third heating plate is mounted on the side portion of the U-shaped beam, the second heating plate and the third heating plate are engaged with both sides of the wire guide bar, and the pressing head is located on the upper portion of the wire guide bar.

As a preferred technical scheme of the present invention, a first heat insulation plate is disposed between the pressing head and the output end of the first hydraulic cylinder, a second heat insulation plate is disposed between the second heating plate and the output end of the second hydraulic cylinder, and a third heat insulation plate is disposed between the third heating plate and the U-shaped beam.

In a second aspect, the present invention further provides a stator coil end hot press molding method, including the steps of:

s1, wire transmission: the coils are placed at the upper parts of the plurality of support frames and drive the coils to move through an external traction device;

s2, primary gelling: the coil moves to the upper part of the first heating plate, the pressing block is driven to move through the operation of the mechanical pressing head, the coil is fixed and pressed, and the first heating plate is used for heating to realize primary heating gelatinization;

s3, heating and forming: and (3) the gelled coil is heated for the first time, moves along the conical die frame, and is heated again through the heating hydraulic clamp, so that the hot press molding is completed.

(III) advantageous effects

1. The invention provides a stator coil end hot press molding device.A plurality of support frames are arranged at the upper part of a support seat, and a straight line segment for moving a coil is formed by the plurality of support frames;

2. the invention provides a stator coil end hot-press forming device, wherein a gelling device of the stator coil end hot-press forming device comprises a first supporting block, a first heating plate, an articulating piece, a contact block, a mechanical pressing head and a pressing block, wherein the pressing block is driven to move by the operation of the mechanical pressing head to fix and press a coil, the coil is heated and gelled through the first heating plate, and the mechanical pressing head is convenient to disassemble through the articulating piece;

3. the invention provides a stator coil end hot press molding device.A heating molding assembly comprises a conical mold base and a plurality of heating hydraulic clamps, wherein a coil which is primarily heated and gelatinized moves along the conical mold base, and is heated again through the heating hydraulic clamps to complete hot press molding;

4. the stator coil end hot-press molding device provided by the invention has the advantages of higher integral integration level, smaller occupied area and convenience in use.

5. The novel stator coil end hot press molding process is adopted, the labor intensity is reduced, and the molding quality of the coil bar is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a support base and a mounting base according to the present invention;

FIG. 3 is an enlarged view of a part of the structure of the gelling apparatus of the present invention;

FIG. 4 is a schematic view of a hinge portion of the present invention;

FIG. 5 is a schematic view of a portion of a thermoformed assembly of the present invention;

FIG. 6 is a schematic view of a portion of the tapered mold frame of the present invention;

FIG. 7 is a schematic view of a portion of a heated hydraulic clamp of the present invention;

fig. 8 is a schematic view of a part of the structure of the operation box of the invention.

In the figure: 100. a supporting seat; 110. a support frame; 120. a first T-shaped groove; 130. a second T-shaped groove; 140. a third T-shaped groove; 200. a gelling device; 210. a first support block; 211. a through hole; 212. a slide rail; 220. a first heating plate; 230. an articulation member; 231. a first cross member; 232. a carriage; 233. a first connecting rod; 234. a second connecting rod; 235. a second cross member; 236. a pin shaft; 240. a contact block; 250. a mechanical compression head; 260. briquetting; 300. a mounting seat; 400. heating the molding assembly; 410. a tapered die carrier; 411. mounting a plate; 412. an arc-shaped plate; 413. a support beam; 414. a wire guide rod; 420. heating the hydraulic clamp; 421. a U-shaped beam; 422. a first hydraulic cylinder; 423. a pressure head; 424. a second hydraulic cylinder; 425. a second heating plate; 426. a third heating plate; 427. a first heat insulation plate; 428. a second heat insulation plate; 429. a third heat insulation plate; 500. an operation box; 510. a base plate; 520. a universal brake wheel; 530. a support pillar; 540. and (4) a box body.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "longitudinal", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1 to 8, a stator coil end hot press forming apparatus includes a support base 100, a gelling device 200, a mounting base 300, and a hot press forming assembly 400.

The upper part of the supporting seat 100 is provided with a plurality of supporting frames 110 through bolts, and the upper parts of the supporting frames 110 are provided with notches matched with the coils; when specifically setting up, supporting seat 100 includes first T type groove 120, second T type groove 130 and third T type groove 140, and first T type groove 120 and second T type groove 130 are parallel arrangement with third T type groove 140 respectively, constitute the breach between first T type groove 120 and the second T type groove 130, and during the concrete use, the breach makes things convenient for outside personnel and material to get into, and T type groove is convenient to install all the other parts.

The gelling device 200 comprises a first support block 210, a first heating plate 220, a hinge 230, a collision block 240, a mechanical compression head 250 and a pressing block 260, wherein the first support block 210 is mounted on the upper portion of the support base 100 through a bolt, when the gelling device is specifically arranged, a through hole 211 is formed in the middle of the first support block 210 in order to facilitate the mounting of the hinge 230, and a slide rail 212 is mounted on the side wall, adjacent to the through hole 211, of the first support block 210 through a screw; the first heating plate 220 is mounted on the upper portion of the first supporting block 210 through screws, the hinge member 230 is mounted on the side portion of the first supporting block 210, the abutting block 240 is mounted on the side portion of the hinge member 230 in a clamping manner, the abutting block 240 abuts against the side wall of the first heating plate 220, the mechanical pressing head 250 is mounted on the inner side of the hinge member 230 through a bolt, the pressing block 260 is mounted on the output end of the mechanical pressing head 250 through screws, and the lower portion of the pressing block 260 is opposite to the upper portion of the first heating plate 220.

In this embodiment, the hinge 230 includes a first beam 231, a carriage 232, two first connecting rods 233, two second connecting rods 234 and a second beam 235, the first beam 231 passes through the middle of the through hole 211, the carriage 232 is mounted on the upper portion of the first beam 231 through a screw, the carriage 232 is slidably mounted on the side portion of the sliding rail 212, the two first connecting rods 233 are rotatably mounted on the two ends of the first beam 231, the two second connecting rods 234 are respectively rotatably mounted on the end portions of the two first connecting rods 233, the end portions of the two second connecting rods 234 are respectively connected with the two ends of the second beam 235 through a pin 236, when specifically setting, the abutting block 240 is mounted on the side portion of the first connecting rod 233, the mechanical pressing head 250 is mounted on the lower portion of the second beam 235, when specifically using, the pressing block 260 is driven to move downward by the operation of the mechanical pressing head 250, so as to fix and press the coil, thereby facilitating the gelling, and can be freely opened through a pin shaft 236, so that the installation and the disassembly are convenient.

The mounting base 300 is detachably mounted on the upper portion of the support base 100 adjacent to the gelling device 200 by bolts, and the mounting base 300 is used for supporting the thermoforming assembly 400.

The heating and forming assembly 400 includes a tapered mold frame 410 and a plurality of heating hydraulic clamps 420, wherein the tapered mold frame 410 is mounted on the upper portion of the mounting base 300, and the plurality of heating hydraulic clamps 420 are respectively mounted on the upper portions of the tapered mold frame 410.

In this embodiment, the taper die carrier 410 includes a mounting plate 411, two arc plates 412, a plurality of supporting beams 413 and a wire guide rod 414, the mounting plate 411 is mounted on the upper portion of the mounting base 300 through bolts, the two arc plates 412 are mounted on the upper portion of the mounting plate 411, the plurality of supporting beams 413 are mounted between the two arc plates 412 respectively, one end of the wire guide rod 414 is connected to the lower portion of one arc plate 412, the other end of the wire guide rod 414 is connected to the upper portion of the other arc plate 412, and the lower wall of the wire guide rod 414 is connected to the upper portion of the supporting beam 413.

In this embodiment, the heating hydraulic clamp 420 includes a U-shaped beam 421, a first hydraulic cylinder 422, a pressing head 423, a second hydraulic cylinder 424, a second heating plate 425 and a third heating plate 426, the U-shaped beam 421 is installed on the upper portion of the supporting beam 413, the first hydraulic cylinder 422 is installed on the central upper portion of the U-shaped beam 421 through a bolt, the pressing head 423 is installed on the output end of the first hydraulic cylinder 422 through a bolt, the second hydraulic cylinder 424 is installed on the side portion of the U-shaped beam 421 through a bolt, the second heating plate 425 is installed on the output end of the second hydraulic cylinder 424, the third heating plate 426 is installed on the side portion of the U-shaped beam 421, the second heating plate 425 and the third heating plate 426 are clamped on both sides of the wire guide rod 414, the pressing head 423 is located on the upper portion of the wire guide rod 414, in particular, the pressing head 423 is driven by the operation of the first hydraulic cylinder 422 to move, and the second heating plate 425 is driven by the operation of the second hydraulic cylinder 424 to move, so that the coil is well fixed and pressed, and heated by the second heating plate 425 and the third heating plate 426 so that the coil is hot press-molded.

In a specific arrangement, in order to prevent heat conduction from affecting the operation, a first heat insulation plate 427 is arranged between the pressure head 423 and the output end of the first hydraulic cylinder 422, a second heat insulation plate 428 is arranged between the second heating plate 425 and the output end of the second hydraulic cylinder 424, and a third heat insulation plate 429 is arranged between the third heating plate 426 and the U-shaped beam 421.

It should be noted that, the second heating plate 425 and the third heating plate 426 are made of aluminum alloy, and are formed after being shaped to reduce deformation caused by high temperature; the heat insulation plates are all heat insulation plates with the heat resistance grade reaching above H level, and have the advantages of high strength, good heat insulation effect, small heat deformation and the like.

In this embodiment, the stator coil end hot press molding device further includes an operation box 500, the operation box 500 includes a bottom plate 510, a universal brake wheel 520, a support column 530 and a box body 540, the universal brake wheel 520 is installed at the lower part of the bottom plate 510 through a screw, the universal brake wheel 520 is located at the inner side of the support base 100, the support column 530 is installed at the upper part of the bottom plate 510 through a bolt, and the box body 540 is installed at the upper part of the support column 530 through a bolt.

In addition, the invention also provides a stator coil end hot-press molding method, which comprises the following steps:

s1, wire transmission: the coils are arranged at the upper parts of the plurality of support frames 110 and drive the coils to move through an external traction device;

s2, primary gelling: the coil moves to the upper part of the first heating plate 220, the pressing block 260 is driven to move by the operation of the mechanical pressing head 250 to fix and press the coil, and the coil is heated by the first heating plate 220 to realize primary heating and gelling;

s3, heating and forming: the primarily heated and gelled coil moves along the tapered mold frame 410, and is heated again by the heating hydraulic clamp 420, thereby completing the hot press molding.

In conclusion, the invention effectively integrates all the working procedures, has smaller overall occupied space and is convenient to use.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.