CN211164431U - Shaping jig - Google Patents

Abstract

The application provides a design tool for weave the design that the basket sealed, weave the basket and adopt wicker, rattan, thin bamboo strips used for weaving any kind of base material as, weave the basket and include to weave the base member by the plane and form top surface open-ended basket body through high temperature mould pressing, basket body end limit is equipped with the sealing piece, the sealing piece is including being located the inboard first sealing piece of basket body end limit and being located the basket body end limit the outside with the second sealing piece of first sealing piece adaptation, the design tool is right first sealing piece and second sealing piece heat the design. According to the method, the high-temperature die pressing and shaping efficiency of the plane woven substrate is high, the yield of products is easy to improve, and the breakage rate of the joint of the side wall and the bottom wall is effectively reduced; the first sealing part and the second sealing part are heated and shaped by the shaping jig, so that the firmness of the sealing parts is enhanced.

Description

Shaping jig

Technical Field

The utility model relates to a daily necessities field especially relates to a design tool.

Background

Natural materials such as wickers, bamboo splits and rattans are all raw materials of handmade woven artware, energy is saved, environment is protected, resources are rich, and products are popular as storage articles for daily use.

At present, the products are all manually and directly woven into the shape required by the solid. With the rise of the cost of Chinese labor, the production cost of the products is high year by year, and the capacity is limited.

At present, the plane mat of the bamboo skin without hollowing is usually formed into a three-dimensional shape by dipping the whole bamboo mat and laminating the bamboo mat into three or more layers by hot pressing, and is only limited to non-hollow weaving.

The woven basket is generally provided with a seal at the mouth portion to ensure stability of the basket body while enhancing the aesthetic appearance of the product; the seal is usually woven by bamboo or bundled, the structure has poor wear resistance, and the seal can fall off and age after a long time to influence normal use.

If the sealing member is used for sealing, the reliability of the sealing becomes a more critical technology to ensure the long-term use of the product.

SUMMERY OF THE UTILITY MODEL

The utility model provides a shaping jig.

According to the first aspect of this application, a design tool is provided for weave the design that the basket sealed, it adopts wicker, rattan, thin bamboo strips used for weaving the basket to adopt any kind of substrate of making of bamboo strip, weave the basket and include to weave the base member by the plane and form top surface open-ended basket body through high temperature mould pressing, basket body end edge is equipped with seals, seals including being located the inboard first seal of basket body end edge and being located the basket body end edge outside with the second of first seal adaptation seals, it is right to design the tool first seal and second seal and heat the design. The high-temperature die pressing and shaping efficiency of the plane woven substrate is high, the yield of products is easy to improve, and the breakage rate of the connecting part of the side wall and the bottom wall is effectively reduced; the first sealing part and the second sealing part are heated and shaped by the shaping jig, so that the firmness of the sealing parts is enhanced.

Further, the first sealing piece is of an integrated frame-shaped structure, and the first sealing piece is fixed with the inner side of the end edge of the basket body in an adhesive mode. The first sealing piece and the basket body are fixed through gluing, so that the product structure is simplified, and the efficiency is improved.

Furthermore, the second sealing piece is fixed to the outer side of the edge of the basket body in an adhesive mode, the second sealing piece comprises a first cross arm, a second side arm and a third side arm, the second side arm and the third side arm are connected with the first cross arm, and circular arc-shaped transition portions are formed at the connection positions of the first cross arm, the second side arm and the third side arm. The second sealing piece and the basket body are fixed through gluing, the product structure is simplified, the efficiency is improved, and meanwhile the appearance of the product is beautified through the structural arrangement of the second sealing piece.

Furthermore, the shaping jig comprises a first shaping assembly matched with the first sealing member and a second shaping assembly matched with the second sealing member, and the first shaping assembly comprises a first shaping block and a second shaping block which can move relatively. The first sealing piece and the second sealing piece are fixed to the basket body through the matching of the first sizing assembly and the second sizing assembly, and the first sizing assembly is set to be a first sizing block and a second sizing block which can move relatively, so that the size of the first sizing block and the second sizing block can be adjusted conveniently to adapt to different woven baskets.

Furthermore, the first and second shaped blocks are of a U-shaped structure and are symmetrically arranged, and each shaped block comprises a first butt-joint portion, a second butt-joint portion and a connecting portion for connecting the first butt-joint portion and the second butt-joint portion. The first shaping block and the second shaping block are arranged to be U-shaped structures, so that the production is facilitated, and the first shaping block and the second shaping block are matched.

Furthermore, the first butt joint portion and the second butt joint portion extend along the horizontal direction, a first heating pipe is arranged in the first butt joint portion along the horizontal direction, and a second heating pipe is arranged in the second butt joint portion along the horizontal direction. The heating pipes are arranged in the first butt joint part and the second butt joint part, so that the reliability of fixing the first sealing piece and the basket body is facilitated, and the product performance is improved.

Furthermore, the connecting part extends axially, and a third heating pipe arranged axially is arranged in the connecting part. The third heating pipe is arranged in the connecting part, so that the fixing performance of the first sealing part and the basket body can be favorably heated, and the fixing effect of the first sealing part and the basket body can be favorably ensured.

Furthermore, arc transition portions are arranged on the periphery of the outer side wall, connected with the connecting portions, of the first butt joint portion and the second butt joint portion, the second shaping assembly comprises corner positioning blocks and edge positioning blocks, and one edge positioning block is arranged between every two adjacent corner positioning blocks. The arc transition part is arranged to be matched with the first sealing part in structure, so that the shaping effect of the shaping jig can be guaranteed; the second shaping assembly is arranged into the corner positioning block and the edge positioning block, so that the structure of the second shaping assembly is simplified, and the production and the cost are reduced.

Furthermore, the corner positioning block is provided with an arc-shaped inner wall matched with the arc-shaped transition part and an upright wall matched with the edge positioning block, the arc-shaped inner wall is connected with the upright wall, a fourth heating pipe is arranged in the corner positioning block, and the fourth heating pipe is arranged in parallel with a tangent line passing through the midpoint of the arc-shaped inner wall. The shaping of the sealing piece at the arc-shaped angle of the basket body is realized through the arc-shaped inner wall of the angle positioning block, and the reliability of the shaping effect is ensured through the arrangement of the fourth heating pipe.

Furthermore, the side positioning block is of a rectangular or square structure, and a fifth heat pipe arranged along the axial direction is arranged in the side positioning block. The straight edge part of the sealing piece is shaped through the arrangement of the edge positioning block and the fifth heat pipe, and the sealing piece and the basket body are improved in fixing performance through the cooperation of the edge positioning block and the corner positioning block, so that the product quality is ensured to be reliable.

According to the technical scheme, the high-temperature die pressing shaping efficiency of the plane weaving matrix is high, the yield of products is easy to improve, and the breakage rate of the connecting part of the side wall and the bottom wall is effectively reduced; the first sealing part and the second sealing part are heated and shaped by the shaping jig, so that the firmness of the sealing parts is enhanced, and the product performance is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.

Fig. 1 is a schematic top view of a shaping jig according to an embodiment of the present application;

fig. 2 is a schematic exploded perspective view of a setting jig and a basket according to an embodiment of the present application;

FIG. 3 is a schematic view of a first form factor of an embodiment of the present application secured to a woven basket;

FIG. 4 is a schematic view of a setting jig and a knitting basket according to an embodiment of the present application;

fig. 5 is a schematic perspective view of a shaping jig according to an embodiment of the present application;

fig. 6 is a schematic exploded perspective view of a sizing jig according to an embodiment of the present application;

fig. 7 is an exploded perspective view of another angle of the shaping jig according to an embodiment of the present application;

FIG. 8 is a perspective view of a second closure according to an embodiment of the present application;

fig. 9 is a schematic view illustrating a manufacturing process of a basket body according to an embodiment of the present application.

Reference numerals:

woven basket 100

Basket body 1

Side wall 11 and bottom wall 12

Closure 2

First closure member 20, second closure member 21, first cross arm 210

Second side arm 211 third side arm 212 transition 213

Wedge-shaped inclined surface 214

Shaping jig 200

First molding member 3

The first butt-joint part 301 of the first sizing block 30 and the first heating pipe 3011

Second docking 302 second heating pipe 3021 docking 303

Third heating tube 3031 arc transition 304 second shaped block 31

Second modular assembly 4

Arc inner wall 401 vertical wall 402 of angle positioning block 40

Fourth heating pipe 403 side positioning block 41 fourth heating pipe 410

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The following describes a shaping jig of the present invention in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 to 9, a shaping jig 200 for shaping a woven basket seal is disclosed. The woven basket 100 is made of any one of wickers, rattans and bamboo splits. The woven basket 100 includes a basket body 1 formed of a flat woven base by high temperature molding to have an open top. Basket body end edge is equipped with sealing 2, sealing is including being located basket body end edge inboard first sealing 20 and being located basket body end edge outside with the second sealing 21 of first sealing 20 adaptation, design tool 200 is right first sealing 20 and second sealing 21 carry out the heat design. The high-temperature die pressing and shaping efficiency of the plane woven substrate is high, the yield of products is easy to improve, and the breakage rate of the connecting part of the side wall and the bottom wall is effectively reduced; the heat setting of the first sealing member 20 and the second sealing member 21 by the setting jig 200 enhances the firmness of the sealing member 2.

The structure of the woven basket 100 will be described in detail below.

In one embodiment, the woven basket 100 includes a basket body 1 and a sealing member 2 disposed at a basket body end edge 10. Basket body 1 is the cavity of top surface open-ended, has integrated into one piece's lateral wall 11 and diapire 12, lateral wall 11 and diapire 12 arc transitional coupling just form the angle of inclination between lateral wall 11 and the diapire 12. Through being favorable to reducing the breakage rate of weaving basket 100 bottom junction with lateral wall 11 with diapire 12 arc transitional coupling, promote the life-span of product. The opening of the basket body 1 in this application is tapered from top to bottom to have a substantially inverted trapezoidal configuration.

In one embodiment, the mat woven by bamboo filaments (which may be woven by human or machine) is placed into a heat-insulating and airtight box. The heat-preservation closed box body is connected with a steam generator; the steam generator is capable of generating superheated steam. The superheated steam is steam with the temperature exceeding 100 ℃.

In the embodiment of the application, after the mat is placed in the heat-insulating closed box, the steam generator is started to perform superheated steam spraying. The superheated steam is sprayed for 2s to 15s, preferably 10 s. The moisture content of the mat is required to be below 15% before steaming, and is below 20% after steaming. The mat is quickly softened by steaming the mat for 10 seconds with superheated steam from the steam generator, but the moisture content of the mat is not much increased. After the mat is steamed and heated, the mat quickly enters a die for hot pressing. The superheated steam steaming time is set to be 2-15 s, so that the effect of softening the plane woven substrate can be achieved, and watermarks can be prevented from being formed on the surface of the substrate. The traditional manufacturing method is that the mat is steamed and boiled by common steam, and the mat is put into a steamer to be steamed and boiled for several minutes or more than ten minutes to achieve the softening effect; therefore, the moisture of the bamboo mat is too high, and the appearance of the product is influenced by the watermark on the basket after hot pressing. The length of the superheated steam steaming time in the embodiment is related to the arrangement of the steam generator, the time consumption is short when the steaming amount is large in unit time, and the steaming time is long when the steaming amount is small in unit time, so that the water content is met after steaming as a limit; the specific parameter correspondence relationship is not particularly limited in this application.

After the superheated steam is steamed, the flat mat is placed under a mould, the temperature of the mould ranges from 90 degrees to 180 degrees, and the pressure is maintained for 30 seconds to 60 seconds. Specifically, the mold comprises a first mold and a second mold, the first mold is fixedly arranged at one position, the mat is placed in the first mold, and then the second mold moves downwards to be completely attached to the first mold, so that the softened mat is subjected to hot-press shaping. The mat removed is shaped into a basket body 1 which can permanently retain its shape. By adopting the technology, the damage rate of the round corners of the shaping jig 200 can be greatly reduced, and the damage rate can be reduced from 80% to 20%.

In order to guarantee the aesthetic property and the wear resistance of products in this application, set up sealing member 2 at basket body 1's terminal edge. The sealing piece 2 comprises a first sealing piece 20 positioned on the inner side of the basket body end edge 10 and a second sealing piece 21 positioned on the outer side of the basket body end edge 10 and matched with the first sealing piece 20. The first sealing member 20 and the second sealing member 21 are arranged to effectively enhance the strength of the product and enhance the beauty of the product. However, if the direct gluing forming may have a gap at the bonding position, which may cause the sealing member and the basket body to be bonded and fall off, the sealing member is heated and shaped by the shaping jig 200, so as to ensure the gluing performance of the sealing member and the basket body and the product beauty. The frame structure of the natural material is mainly characterized in that bamboo strips inside and outside are bound by winding bamboo filaments or paper ropes so as to achieve the effect of fixing the frame. The mode of winding the bamboo filament or the paper rope needs low labor efficiency, the size of the frame opening can not be ensured, and the upper cover and the lower cover can not be combined because of the appearance of a plane. The rope may break as the time of use increases.

Scheme in this application adopts two bamboo strips used for weaving outside and inside to press from both sides basket body end edge 10 in the centre, and is stereotyped through the veneer and forms.

Specifically, the first sealing member 20 is fixed to the inner side of the basket body end 10 by adhesive, and the second sealing member 21 is fixed to the outer side of the basket body end 10 by adhesive. The first sealing piece 20 and the second sealing piece 21 are fixed with the edge 10 of the basket body in an adhesive mode, so that the operation is simple and the performance is reliable.

The first sealing piece 20 and the second sealing piece 21 are fixed to the edge 10 of the basket body by gluing and then are subjected to hot-press forming treatment by a forming jig 200. The first sealing piece 20 and the second sealing piece 21 are fixed on the edge 10 of the basket body by gluing and then are subjected to hot pressing treatment, so that gaps at the round corners can be avoided, and the gluing effect is optimized.

In an embodiment, the second sealing member 21 is two U-shaped sealing members 2 with the same structure, which are independently arranged, and the second sealing member 21 includes a first cross arm 210, and a second side arm 211 and a third side arm 212 connected to the first cross arm 210. The joints of the first cross arm 210, the second side arm 211 and the third side arm 212 form circular arc transition parts 213. The two independent second sealing parts 21 are arranged, so that the assembly is convenient and the sealing process can be simplified; the joints of the first cross arm 210, the second side arm 211 and the third side arm 212 are formed with arc transition parts 213, which is beneficial to the joint of the second sealing piece 21 and the basket body 1, and can beautify the appearance of the product and ensure the strength of the second sealing piece 21.

The inner side of the end portion of the second side arm 211 remote from the first cross arm 210 is provided with a wedge-shaped inclined surface 214 so as to be bonded to the outer side of the basket body end edge 10. The wedge-shaped inclined surface 214 is beneficial to the second sealing piece 21 to be attached to the edge 10 of the basket body when being glued, and the fact that no glue gap or small gap is ensured is beneficial to beautifying the appearance of the product.

The inner side of the end portion of the third side arm 212 remote from the first cross arm 210 is provided with a wedge-shaped inclined surface 214 so as to be adhered to the outer side of the basket body end edge 10. The wedge-shaped inclined surface 214 is beneficial to the second sealing piece 21 to be attached to the edge 10 of the basket body when being glued, and the fact that no glue gap or small gap is ensured is beneficial to beautifying the appearance of the product.

The basket body 1 is formed by a plane woven base body through high-temperature die pressing. Through weaving the base member high temperature mould pressing with the plane and stereotype efficiently and easily promote the yield of product, effectively reduce the breakage rate of lateral wall 11 and diapire 12 junction.

The plane weaving basal body is softened by steam injection with superheated steam before being molded at high temperature. The superheated steam is used for steam-spraying the plane woven substrate before high-temperature mould pressing, so that the softening of the plane woven substrate is facilitated, the mould pressing is facilitated on one hand, and the breakage rate of products is reduced on the other hand.

The first sealing piece is of an integrated frame-shaped structure, and the first sealing piece is fixed with the inner side of the end edge of the basket body in an adhesive mode. The first sealing piece and the basket body are fixed through gluing, so that the product structure is simplified, and the efficiency is improved.

The second sealing piece is fixedly glued with the outer side of the edge of the basket body, the second sealing piece comprises a first cross arm, a second side arm and a third side arm, the second side arm and the third side arm are connected with the first cross arm, and circular arc-shaped transition portions 213 are formed at the joints of the first cross arm, the second side arm and the third side arm. The second sealing piece and the basket body are fixed through gluing, the product structure is simplified, the efficiency is improved, and meanwhile the appearance of the product is beautified through the structural arrangement of the second sealing piece.

The shaping jig 200 comprises a first shaping assembly 3 adapted to the first sealing member and a second shaping assembly 4 adapted to the second sealing member, wherein the first shaping assembly 3 comprises a first shaping block 30 and a second shaping block 31 which can move relatively. Through the cooperation of first design subassembly 3 and second design subassembly 4 in order to realize right first sealing and second sealing with basket body's is fixed, but set up first design subassembly 3 into relative motion's first design piece 30 and second design piece 31 be convenient for adjust the size with the different basket of weaving of adaptation equipment of basket body when conveniently stereotyping simultaneously. When the shaping jig starts to carry out heating shaping treatment on the sealing piece, the sealing piece is positioned in a gap formed by the first shaping assembly and the second shaping assembly. The size of the gap corresponds to the structural arrangement of the closure.

The first and second shaped blocks 30 and 31 have the same U-shaped structure and are symmetrically disposed, and each of the first and second shaped blocks includes a first mating portion 301, a second mating portion 302, and a connecting portion 303 connecting the first and second mating portions 301 and 302. The first and second shaping blocks 30 and 31 are configured in a U-shaped structure for easy production and are adapted to the first sealing member.

The first butt joint portion 301 and the second butt joint portion 302 extend in a horizontal direction, a first heating pipe 3011 is disposed in the first butt joint portion 301 in the horizontal direction, and a second heating pipe 3021 is disposed in the second butt joint portion 302 in the horizontal direction. The heating pipes are arranged in the first butt joint part 301 and the second butt joint part 302, so that the reliability of fixing the first sealing piece and the basket body is improved, and the product performance is improved.

The connecting portion 303 extends in the axial direction, and a third heating pipe 3031 arranged in the axial direction is arranged in the connecting portion. The third heating pipe 3031 is arranged in the connecting part 303, so that the fixing performance of the first sealing part and the basket body is facilitated, and the fixing effect of the first sealing part and the basket body is facilitated.

The peripheries of the outer side walls of the first butt joint portion 301 and the second butt joint portion 302 connected with the connecting portion 303 are provided with arc-shaped transition portions 304, the second shaping assembly 4 comprises corner positioning blocks 40 and edge positioning blocks 41, and one edge positioning block 41 is arranged between two adjacent corner positioning blocks 40. The arc-shaped transition part 304 is matched with the first sealing part in structure, so that the shaping effect of the shaping jig 200 can be ensured; the arrangement of the second shaping assembly 4 as the corner positioning block 40 and the edge positioning block 41 simplifies the structure of the second shaping assembly 4, and facilitates production and cost reduction.

The corner positioning block 40 has an arc inner wall 401 adapted to the arc transition portion 304 and an upright wall 402 adapted to the edge positioning block 41, the arc inner wall 401 is connected to the upright wall 402, a fourth heating pipe 403 is disposed in the corner positioning block 40, and the fourth heating pipe is disposed in parallel with a tangent line passing through a midpoint of the arc inner wall 401. The distance between the fourth heating pipe and the highest point of the arc-shaped inner wall 401 is 5mm-8mm to ensure the heating effect. The shaping of the sealing piece at the arc-shaped angle of the basket body is realized through the arc-shaped inner wall 401 of the angle positioning block 40, and the reliability of the shaping effect is ensured through the arrangement of the fourth heating pipe 403.

The side positioning block 41 has a rectangular or square structure, and a fifth heat pipe 410 is disposed therein and arranged along the axial direction. The straight edge part of the sealing piece is shaped by the arrangement of the edge positioning block 41 and the fifth heat pipe 410, and the matching of the edge positioning block and the corner positioning block 40 realizes the improvement of the fixing performance of the sealing piece and the basket body, thereby ensuring the reliable product quality. The length of the edge positioning block is arranged corresponding to the straight edge of the basket body.

Indeed, the shaping jig 200 may be configured to have a corresponding structure according to different forms of the product; and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a design tool, its characterized in that for weave the design that the basket sealed, it adopts wicker, rattan, thin bamboo strips used for weaving the basket to adopt any kind of substrate of making of bamboo strip, weave basket (100) including weaving the base member by the plane and form top surface open-ended basket body (1) through high temperature mould pressing, basket body end edge is equipped with seals (2), seals (2) including being located basket body end edge (10) inboard first seals (20) and being located basket body end edge (10) the outside with the second of first seals (20) adaptation seals (21), the design tool is right first seals (20) and second seals (21) and adds the fever design.

2. The sizing jig as claimed in claim 1, wherein the first sealing member (20) is of an integral frame structure, and the first sealing member (20) is fixed to the inner side of the basket body end edge (10) by gluing.

3. The sizing jig according to claim 2, characterized in that the second sealing piece (21) is fixed to the outer side of the basket body end edge (10) by gluing, the second sealing piece (21) comprises a first cross arm (210), and a second side arm (211) and a third side arm (212) connected with the first cross arm (210), and the joints of the first cross arm (210) and the second side arm (211) and the third side arm (212) form circular arc-shaped transition parts (213).

4. A sizing jig according to claim 3, characterized in that the sizing jig comprises a first sizing assembly (3) adapted to the first closure member and a second sizing assembly (4) adapted to the second closure member, the first sizing assembly (3) comprising a first sizing block (30) and a second sizing block (31) which are relatively movable.

5. The sizing jig according to claim 4, wherein the first sizing block (30) and the second sizing block (31) are U-shaped and symmetrically arranged, and comprise a first butt-joint part (301), a second butt-joint part (302) and a connecting part (303) connecting the first butt-joint part (301) and the second butt-joint part (302).

6. The sizing jig as claimed in claim 5, wherein the first butt joint part (301) and the second butt joint part (302) extend along a horizontal direction, a first heating pipe (3011) is arranged in the first butt joint part (301) along the horizontal direction, and a second heating pipe (3021) is arranged in the second butt joint part (302) along the horizontal direction.

7. The sizing jig according to claim 6, wherein the connecting part (303) extends in the axial direction, and a third heating pipe (3031) arranged in the axial direction is arranged in the connecting part.

8. The sizing jig according to claim 7, wherein the first butt joint portion (301) and the second butt joint portion (302) are provided with arc-shaped transition portions (304) around the outer side wall connected with the connecting portion (303), the second sizing assembly (4) comprises corner positioning blocks (40) and edge positioning blocks (41), and an edge positioning block (41) is arranged between two adjacent corner positioning blocks (40).

9. The sizing jig according to claim 8, characterized in that the corner positioning block (40) has an arc-shaped inner wall (401) adapted to the arc-shaped transition part (304) and an upright wall (402) adapted to the edge positioning block (41), the arc-shaped inner wall (401) is connected to the upright wall (402), and a fourth heating pipe (403) is arranged in the corner positioning block (40) and is parallel to a tangent line passing through a midpoint of the arc-shaped inner wall (401).

10. The sizing jig according to claim 9, wherein the side positioning block (41) is of a rectangular or square structure, and a fifth heat pipe (410) is axially arranged in the side positioning block.

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