CN211105748U

CN211105748U - I-shaped insulating section bar preforming device

Info

Publication number: CN211105748U
Application number: CN201922073021.7U
Authority: CN
Inventors: 马长山; 袁鹏
Original assignee: Beijing Friend Composite Materials Co ltd
Current assignee: Beijing Friend Composite Materials Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-07-28
Anticipated expiration: 2029-11-26

Abstract

The utility model relates to a preforming device for I-shaped insulating section bars, which comprises a first positioning plate, a second positioning plate, a third positioning plate and a fourth positioning plate, wherein the center of the first positioning plate is provided with a threading area, and the left side and the right side of the threading area are respectively provided with a first felt threading hole; a first through hole is formed in the center of the second positioning plate, second through holes are formed in the upper side and the lower side of the first through hole respectively, third through holes are formed in the left side and the right side of the first through hole respectively, and second felt through holes are formed in the left side and the right side of the first through hole respectively; an H-shaped fourth through hole is formed in the center of the third positioning plate, a U-shaped fifth through hole is formed in the upper side and the lower side of the fourth through hole respectively, and third felt through holes are formed in the left side and the right side of the fourth through hole respectively; the center of the fourth positioning plate is provided with an H-shaped sixth through hole. The I-shaped insulating section preforming device is simple in structure, convenient to install, disassemble and replace and beneficial to improving the qualified rate of finished products.

Description

I-shaped insulating section bar preforming device

Technical Field

The utility model relates to an insulating section bar of I shape preforming device belongs to insulating goods technical field.

Background

The I-shaped insulating section is an I-shaped or H-shaped insulating section. The production process of the existing I-shaped insulating section generally adopts a glass fiber reinforced plastic pultrusion machine, a traction mechanism freely discharges glass fiber yarns and glass felts from a yarn rack and a felt rack respectively, the glass fiber yarns and the glass felts are soaked with glue solution through a glue tank, then enter a heating mould through a yarn plate, a felt sleeve and a positioning plate on a pultrusion tooling rack, the mould is surrounded by the heating sleeve for heating, the glass yarns and the felts soaked with the glue solution are solidified and formed through the inner cavity of the mould, and are compressed by the traction mechanism to be led out into the continuous I-shaped insulating section.

In the production process of the existing I-shaped insulating section, because a preforming device is not usually arranged between a positioning plate and a heating mould, the glass felt and the glass fiber yarns are easy to dislocate, the final finished section is easy to have the defects of woven appearance, rough surface and unstable size, the occurrence probability exceeds 7.7 percent, and the qualification rate of the finished product is seriously influenced; meanwhile, the glass mat and the glass fiber yarn are easy to damage due to one-step forming.

SUMMERY OF THE UTILITY MODEL

The utility model provides an insulating section bar preforming device of I shape to the not enough of prior art existence, concrete technical scheme as follows:

a preforming device for an I-shaped insulating section comprises a first positioning plate, a second positioning plate, a third positioning plate and a fourth positioning plate, wherein the second positioning plate is arranged in parallel with the first positioning plate, the third positioning plate is arranged in parallel with the first positioning plate, the fourth positioning plate is arranged in parallel with the first positioning plate, a yarn threading area is arranged in the center of the first positioning plate, and first felt threading holes are respectively formed in the left side and the right side of the yarn threading area; a first through hole is formed in the center of the second positioning plate, second through holes are formed in the upper side and the lower side of the first through hole respectively, third through holes are formed in the left side and the right side of the first through hole respectively, and second felt through holes are formed in the left side and the right side of the first through hole respectively; an H-shaped fourth through hole is formed in the center of the third positioning plate, U-shaped fifth through holes are formed in the upper side and the lower side of the fourth through hole respectively, and third felt through holes are formed in the left side and the right side of the fourth through hole respectively; and an H-shaped sixth through hole is formed in the center of the fourth positioning plate.

As an improvement of the above technical solution, the threading area includes a horizontal unit and vertical units located at both sides of the horizontal unit, the horizontal unit includes three rows of first threading hole groups, and each first threading hole group is composed of a plurality of first threading holes arranged in a row; the vertical unit comprises three rows of second thread hole groups, and each second thread hole group is composed of a plurality of second thread holes which are arranged in a row.

As an improvement of the technical scheme, the first felt penetrating hole, the first perforation, the third perforation, the second felt penetrating hole and the third felt penetrating hole are all rectangular hole structures.

As the improvement of above-mentioned technical scheme, the second is perforated including the horizontal hole section that the level set up, the both sides of horizontal hole section are provided with rectangular hole section respectively, rectangular hole section and horizontal hole section intercommunication, and the contained angle between two rectangular hole sections is 100.

As an improvement of the above technical solution, the width of the third perforation is equal to the width of the first perforation, and the width of the first perforation is greater than the width of the second perforation.

As an improvement of the above technical solution, the width of the first felt penetration hole is equal to the width of the second felt penetration hole, and the width of the second felt penetration hole is equal to the width of the third felt penetration hole.

As an improvement of the technical scheme, the first yarn threading hole and the second yarn threading hole are both in round hole structures.

The I-shaped insulating section preforming device has simple structure and convenient installation, disassembly and replacement; the glass mat and the glass fiber yarns are preformed into an I-shaped structure, and the glass mat and the glass fiber yarns are clear in layout and uniform in distribution in the preforming process and are convenient to process; meanwhile, the glass fiber felt and the glass fiber yarns can be effectively prevented from being damaged due to one-step forming, and the finished product qualification rate is improved.

Drawings

Fig. 1 is a schematic structural view (in a top view) of an i-shaped insulating profile preforming apparatus according to the present invention;

fig. 2 is a schematic structural diagram of an i-shaped insulating profile preforming device according to the present invention;

fig. 3 is a schematic structural view of the first positioning plate of the present invention;

fig. 4 is a schematic structural view of the second positioning plate of the present invention;

fig. 5 is a schematic structural view of a third positioning plate according to the present invention;

fig. 6 is a schematic structural view of a fourth positioning plate according to the present invention;

fig. 7 is a schematic structural view of the threading area of the present invention;

fig. 8 is a schematic structural view of the second through hole of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 6, the i-shaped insulating section preforming device includes a first positioning plate 50, a second positioning plate 60 disposed in parallel with the first positioning plate 50, a third positioning plate 70 disposed in parallel with the first positioning plate 50, and a fourth positioning plate 80 disposed in parallel with the first positioning plate 50, wherein an H-shaped threading area is disposed in the center of the first positioning plate 50, and vertical strip-shaped first felt-threading holes 53 are disposed on the left and right sides of the threading area; a transverse strip-shaped first through hole 61 is formed in the center of the second positioning plate 60, second through holes 62 are formed in the upper and lower sides of the first through hole 61 respectively, the two second through holes 62 are arranged in axial symmetry, the second through hole 62 positioned above is in an ︺ -shaped structure, the second through hole 62 positioned below is in a clamping structure, vertical strip-shaped third through holes 63 are formed in the left and right sides of the first through hole 61 respectively, the two third through holes 63 are formed between the two second through holes 62, vertical strip-shaped second felt through holes 64 are formed in the left and right sides of the first through hole 61 respectively, the two third through holes 63 are formed between the two second felt through holes 64, and the two second felt through holes 64 are formed between the two second through holes 62; an H-shaped fourth through hole 71 is formed in the center of the third positioning plate 70, U-shaped fifth through holes 72 are formed in the upper side and the lower side of the fourth through hole 71 respectively, the two fifth through holes 72 are arranged in axial symmetry, the closed sides of the fifth through holes 72 face the fourth through hole 71, and vertical strip-shaped third felt through holes 73 are formed in the left side and the right side of the fourth through hole 71 respectively; the fourth positioning plate 80 is provided at the center thereof with an H-shaped sixth through hole 81.

The felt or yarn is glass fiber yarn or glass felt special for producing I-shaped insulating section bars. As in fig. 1, 2, the front end at the special heating mould 10 of i shape insulating section is installed to the insulating section of i shape preforming device of i shape, and this special heating mould 10 of i shape insulating section is current i shape insulating section production equipment commonly used, and this part also is not the utility model discloses the key point of protection no longer gives unnecessary details. The dipped glass fiber yarns and the glass felts sequentially pass through the first positioning plate 50, the second positioning plate 60, the third positioning plate 70 and the fourth positioning plate 80 for pre-forming and finally enter the special heating die 10 for the I-shaped insulating section for heating and shaping.

As shown in fig. 1 and 2, the i-shaped insulating profile preforming device further includes a mounting mechanism for fixing the first positioning plate 50, the second positioning plate 60, the third positioning plate 70 and the fourth positioning plate 80, the mounting mechanism includes two pressing plates 20, two first screws 40, first nuts 41 adapted to the first screws 40, four second screws 31, and second nuts 32 adapted to the second screws 31, the length direction of the pressing plates 20 is perpendicular to the length of the first screws 40, first mounting holes for the first screws 40 to move are respectively formed at two ends of the pressing plates 20, and the two pressing plates 20 are fixedly connected through the first screws 40 and the first nuts 41; the length direction of the second screw 31 is vertical to that of the first screw 40, and the tail end of the second screw 31 is fixedly connected with the pressure plate 20; a second mounting hole 501 for the second screw 31 to pass through is formed in the edge of the first positioning plate 50, a third mounting hole 601 for the second screw 31 to pass through is formed in the edge of the second positioning plate 60, a fourth mounting hole 701 for the second screw 31 to pass through is formed in the edge of the third positioning plate 70, and a fifth mounting hole 801 for the second screw 31 to pass through is formed in the edge of the fourth positioning plate 80; one side of the first positioning plate 50 is provided with a first blocking pipe 33 located between the first positioning plate 50 and the second positioning plate 60, the second nut 32 is arranged on the other side of the first positioning plate 50, the second nut 32 is in threaded connection with the second screw rod 31, the first blocking pipe 33 is sleeved on the outside of the second screw rod 31, a second blocking pipe 34 is arranged between the second positioning plate 60 and the third positioning plate 70, the second blocking pipe 34 is sleeved on the outside of the second screw rod 31, a third blocking pipe 35 is arranged between the third positioning plate 70 and the fourth positioning plate 80, the third blocking pipe 35 is sleeved on the outside of the second screw rod 31, a fourth blocking pipe 36 is arranged between the fourth positioning plate 80 and the pressing plate 20, and the fourth blocking pipe 36 is sleeved on the outside of the second screw rod 31.

The method for fixing the mounting mechanism and the special heating die 10 for the I-shaped insulating section comprises the following steps:

firstly, placing two pressing plates 20 on the upper side and the lower side of a special heating mold 10 for the I-shaped insulating section respectively, then respectively penetrating first screw rods 40 into first mounting holes, finally connecting first nuts 41 on the upper end and the lower end of the first screw rods 40 in a threaded manner, and tightly pressing the pressing plates 20 by the first nuts 41, so that the two pressing plates 20 are finally clamped at the upper end and the lower end of the special heating mold 10 for the I-shaped insulating section.

Step two, as the second screw 31 is fixedly connected with the pressure plate 20, the screw connection or the welding fixation can be adopted; the fourth blocking pipe 36 is firstly sleeved outside the second screw rod 31, then the fifth mounting hole 801 in the fourth positioning plate 80 penetrates through the second screw rod 31, then the third blocking pipe 35 is sleeved outside the second screw rod 31, the fourth mounting hole 701 in the third positioning plate 70 penetrates through the second screw rod 31, then the second blocking pipe 34 is sleeved outside the second screw rod 31, the third mounting hole 601 in the second positioning plate 60 penetrates through the second screw rod 31, then the first blocking pipe 33 is sleeved outside the second screw rod 31, the second mounting hole 501 in the first positioning plate 50 penetrates through the second screw rod 31, and finally the second nut 32 is in threaded connection with the second screw rod 31 so that the second nut 32 abuts against the first positioning plate 50.

The cross-sectional area of the second installation hole 501 is smaller than the cross-sectional area of the periphery of the first baffle pipe 33, the cross-sectional area of the third installation hole 601 is smaller than the cross-sectional area of the periphery of the second baffle pipe 34, the cross-sectional area of the fourth installation hole 701 is smaller than the cross-sectional area of the periphery of the third baffle pipe 35, the cross-sectional area of the fifth installation hole 801 is smaller than the cross-sectional area of the periphery of the third baffle pipe 35, and the cross-sectional area of the fifth installation hole 801 is smaller than the cross-sectional area of the periphery of the fourth. This enables the first pipe stopper 33 to limit the distance between the first positioning plate 50 and the second positioning plate 60, the second pipe stopper 34 to limit the distance between the second positioning plate 60 and the third positioning plate 70, the third pipe stopper 35 to limit the distance between the third positioning plate 70 and the fourth positioning plate 80, and the fourth pipe stopper 36 to limit the distance between the fourth positioning plate 80 and the pressing plate 20, which also controls the distance between the fourth positioning plate 80 and the inlet end of the i-shaped insulating section special heating mold 10; finally, the following steps can be achieved: as shown in fig. 2, the distance between the first positioning plate 50 and the second positioning plate 60 is m, the distance between the second positioning plate 60 and the third positioning plate 70 is n, the distance between the third positioning plate 70 and the fourth positioning plate 80 is c, the distance between the fourth positioning plate 80 and the inlet end of the i-shaped insulating section special heating mold 10 is d, and n > m > c ═ d needs to be satisfied. The reason why n, m, c, d are set according to the above relationship is as follows: because the dispersion degree of first locating plate 50 is the biggest, the dispersion degree of second locating plate 60 is the second, the concentration degree of third locating plate 70 is the highest, through the interval between extension first locating plate 50 and second locating plate 60, and prolong the interval between second locating plate 60 and third locating plate 70 to the biggest, glass fiber yarn and glass felt are passing through first locating plate 50, second locating plate 60, third locating plate 70, the in-process of fourth locating plate 80 in proper order, the resistance change when helping glass fiber yarn and glass felt to be tightened up and be the gradient change, avoid producing great fall, make glass fiber yarn and glass felt atress more even when receiving the bundle, it is more smooth-going in-process, this effectively reduces its probability of taking place wearing and tearing in the bundle receiving process. The utility model discloses in, glass fiber yarn and glass felt in the preforming in-process, through the quartic process of restrainting gradually, for once or twice fashioned restraint, the process of restrainting gradually through the quartic can show probability and the degree of wear that reduces glass felt and glass fiber yarn emergence wearing and tearing, helps improving off-the-shelf qualification rate.

When I-shaped insulating section bars are produced by the company, two layers of glass felts are arranged, and a plurality of glass fiber yarns are filled between the two layers of glass felts, so that the compressive strength and the tensile strength of finished section bars can be obviously improved. As shown in fig. 7, the threading area includes a horizontal unit 51 and vertical units 52 located at both sides of the horizontal unit 51, the horizontal unit 51 and the two vertical units 52 form an H-shaped structure, the horizontal unit 51 includes three rows of first threading groups 511, and each first threading group 511 is composed of a plurality of first threading holes 5111 arranged in rows; the vertical unit 52 includes three rows of second thread hole groups 521, and the second thread hole groups 521 are formed by a plurality of second thread holes 5211 arranged in a row. First threading holes 5111 in the first threading hole group 511 are arranged at equal intervals, and the first threading holes 5111 in two adjacent rows of the first threading hole groups 511 are arranged in a staggered manner; in the horizontal unit 51, the number of first threading holes 5111 in the first threading hole group 511 in the first row is 8, the number of first threading holes 5111 in the first threading hole group 511 in the second row is 7, and the number of first threading holes 5111 in the first threading hole group 511 in the third row is 8. In the vertical unit 52, the second threading holes 5211 in the second threading hole group 521 are arranged at equal intervals, and the second threading holes 5211 in two adjacent columns of the second threading hole groups 521 are arranged in a staggered manner; the number of the second threading holes 5211 in the second threading hole group 521 in the first row is 10, the number of the second threading holes 5211 in the second row of the second threading hole group 521 is 9, and the number of the second threading holes 5211 in the second row of the second threading hole group 521 is 10.

When the impregnated glass mat passes through the first positioning plate 50, the glass mat passes through the vertical strip-shaped first mat passing hole 53 to be limited. After the glass fiber yarns after gum dipping pass through the yarn passing area, all the glass fiber yarns are limited and positioned to be arranged in an H-shaped structure; through the staggered arrangement, the glass fiber yarns after gum dipping complement each other, and are dispersed more uniformly in the section. That is, the first felt perforation 53, the first yarn perforation 5111 and the second yarn perforation 5211 in the yarn perforation area mainly play a role of limiting.

Glass mat and glass fiber yarn can continue to pass second locating plate 60 after passing first locating plate 50, and second locating plate 60 plays limiting displacement on the one hand, and simultaneously, second locating plate 60 can also carry out the first step to glass mat and glass fiber yarn and tighten up and tie, and the concrete principle is as follows:

the glass mat that passes out of the first through-mat holes 53 will continue to pass through the second through-mat holes 64. A part of the glass fiber yarns passing through the yarn passing area passes through the two I-shaped structures formed by the first through holes 61 and the two third through holes 63, so that the part of the glass fiber yarns are further tightened and bound into the I-shaped structures; the remaining portion of the glass yarn passes through the second aperture 62 at the "restriction" or "︺", and the portion of the glass mat is forcibly restricted to the "restriction" or "︺" arrangement. Wherein, as shown in fig. 8, the second through hole 62 includes a horizontal hole section 621, two sides of the horizontal hole section 621 are respectively provided with a long strip hole section 622, the long strip hole section 622 is communicated with the horizontal hole section 621, and an included angle between the two long strip hole sections 622 is 100 °. The second aperture 62 essentially forces a portion of the glass yarn to be "stapled" or "︺" for subsequent reshaping into an H-shaped configuration.

After the glass mat and the glass fiber yarns pass through the second positioning plate 60, the glass mat and the glass fiber yarns can continue to pass through the third positioning plate 70, on one hand, the third positioning plate 70 plays a limiting role, and meanwhile, the third positioning plate 70 can further bundle the glass mat and the glass fiber yarns so that the glass mat and the glass fiber yarns are forced to be shaped into an I-shaped structure, which can also be called an H-shaped structure.

The glass mat passing through the second through-mat holes 64 will then pass through the third through-mat holes 73. The portion of the glass yarn passing through the first perforation 61 and the two third perforations 63 will pass through the H-shaped fourth perforation 71 and the portion of the glass yarn will be further tightened and bound into the H-shaped structure; while the part of the glass fiber yarn passed by the second through hole 62 passes through the U-shaped fifth through hole 72, the U-shaped fifth through hole 72 can further tighten and bind the part of the glass fiber yarn, which is equivalent to the 'clamping' or '︺' shaped second through hole 62.

Wherein, in order to ensure the tightening and binding effect; the first felt penetrating hole 53, the first penetrating hole 61, the third penetrating hole 63, the second felt penetrating hole 64 and the third felt penetrating hole 73 are all rectangular hole structures. The width of the third perforation 63 is equal to the width of the first perforation 61, and the width of the first perforation 61 is greater than the width of the second perforation 64. The width of the first felt penetration 53 is equal to the width of the second felt penetration 64, and the width of the second felt penetration 64 is equal to the width of the third felt penetration 73. The first threading hole 5111 and the second threading hole 5211 are both circular hole structures.

The glass mat and the glass fiber yarns can continuously pass through the fourth positioning plate 80 after passing through the third positioning plate 70, the fourth positioning plate 80 plays a limiting role on the one hand, and meanwhile, the fourth positioning plate 80 can also carry out final bundling on the glass mat and the glass fiber yarns so that the glass mat and the glass fiber yarns are thoroughly shaped into an I-shaped structure. Finally, all the glass mats and the glass fiber yarns pass through the H-shaped sixth through holes 81, so that all the glass mats and the glass fiber yarns are pre-molded into an I-shaped structure, and the glass mats and the glass fiber yarns at the sixth through holes 81 are extruded more densely, thereby facilitating the subsequent hot press molding of the glass mats and the glass fiber yarns entering the inner part of the special heating mold 10 for the I-shaped insulating section.

In the above embodiment, the glass mat and the glass fiber yarns are gradually tightened and bound into an i-shaped configuration while passing through the gradual pre-forming process of the first positioning plate 50, the second positioning plate 60, the third positioning plate 70 and the fourth positioning plate 80, before entering the special heating mould 10 for the I-shaped insulating section, the glass felt and the glass fiber yarns are extruded into an I-shaped pre-forming structure with uniform and compact structural distribution, the heating mould is convenient to enter the special heating mould 10 for the I-shaped insulating section, the abrasion between the glass felt and the glass fiber yarns and the special heating mould 10 for the I-shaped insulating section is small, the glass fiber reinforced plastic insulating section can ensure small abrasion, uniform distribution and complete structure of the glass felt and the glass fiber yarns in the bundling and preforming process, so that the prepared I-shaped insulating section has uniform texture and is beneficial to improving the mechanical property of the I-shaped insulating section; in addition, first locating plate 50, second locating plate 60, third locating plate 70 and fourth locating plate 80 all have the effect of location to can prevent effectively that glass felt and glass fiber yarn from taking place the dislocation, just also effectively reduce the finished product and weave the defect that shows, the surface is coarse, the size is unstable, is showing the qualification rate that improves the finished product. The probability of defects of weaving appearance, rough surface, unstable size and the like of a finished product is not more than 3.1 percent, the qualification rate of the finished product is obviously improved, and the finished product has smooth surface, stable size, high mechanical strength and good quality.

The I-shaped insulating section preforming device is simple in structure and convenient to install, disassemble and replace; the glass mat and the glass fiber yarns are preformed by four groups of positioning plates (a first positioning plate 50, a second positioning plate 60, a third positioning plate 70 and a fourth positioning plate 80) for performing, and the glass mat and the glass fiber yarns are separated, so that the glass mat and the glass fiber yarns can be distributed and distributed clearly, and the processing is convenient; meanwhile, the damage of the glass felt and the glass fiber yarns caused by one-step forming can be effectively prevented.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an insulating section bar of I shape preforming device which characterized in that: the novel yarn threading device comprises a first positioning plate (50), a second positioning plate (60) arranged in parallel with the first positioning plate (50), a third positioning plate (70) arranged in parallel with the first positioning plate (50), and a fourth positioning plate (80) arranged in parallel with the first positioning plate (50), wherein a yarn threading area is arranged in the center of the first positioning plate (50), and first felt threading holes (53) are respectively arranged on the left side and the right side of the yarn threading area; a first through hole (61) is formed in the center of the second positioning plate (60), second through holes (62) are formed in the upper side and the lower side of the first through hole (61) respectively, third through holes (63) are formed in the left side and the right side of the first through hole (61) respectively, and second felt through holes (64) are formed in the left side and the right side of the first through hole (61) respectively; an H-shaped fourth through hole (71) is formed in the center of the third positioning plate (70), U-shaped fifth through holes (72) are formed in the upper side and the lower side of the fourth through hole (71) respectively, and third felt through holes (73) are formed in the left side and the right side of the fourth through hole (71) respectively; the center of the fourth positioning plate (80) is provided with an H-shaped sixth through hole (81).

2. An i-shaped insulating profile preforming device according to claim 1, characterised in that: the threading area comprises a horizontal unit (51) and vertical units (52) positioned on two sides of the horizontal unit (51), the horizontal unit (51) comprises three rows of first threading hole groups (511), and each first threading hole group (511) is formed by a plurality of first threading holes (5111) which are arranged in a row; the vertical unit (52) comprises three rows of second thread hole groups (521), and the second thread hole groups (521) are formed by a plurality of second thread holes (5211) which are arranged in a row.

3. An i-shaped insulating profile preforming device according to claim 1, characterised in that: the first felt penetrating hole (53), the first penetrating hole (61), the third penetrating hole (63), the second felt penetrating hole (64) and the third felt penetrating hole (73) are all rectangular hole structures.

4. An i-shaped insulating profile preforming device according to claim 1, characterised in that: the second perforation (62) is including horizontal hole section (621) that sets up, the both sides of horizontal hole section (621) are provided with rectangular hole section (622) respectively, and rectangular hole section (622) and horizontal hole section (621) intercommunication, and the contained angle between two rectangular hole sections (622) is 100.

5. An i-shaped insulating profile preforming device according to claim 3, characterised in that: the width of the third perforation (63) is equal to the width of the first perforation (61), and the width of the first perforation (61) is larger than the width of the second perforation (64).

6. An i-shaped insulating profile preforming device according to claim 3, characterised in that: the width of the first felt penetrating holes (53) is equal to that of the second felt penetrating holes (64), and the width of the second felt penetrating holes (64) is equal to that of the third felt penetrating holes (73).

7. An i-shaped insulating profile preforming device according to claim 2, characterized in that: the first threading hole (5111) and the second threading hole (5211) are both round hole structures.