阅读说明：本技术 一种汽车遮阳帘及其加工方法 (Automobile sun-shading curtain and processing method thereof ) 是由 吴万荣 于 2021-09-23 设计创作，主要内容包括：本发明属于遮阳帘加工技术领域,尤其涉及一种汽车遮阳帘及其加工方法；本发明提供了一种汽车遮阳帘,该汽车遮阳帘由帘板和帘构成,帘通过贯帘板和帘的扎紧组件与帘板进行固定,帘板上安装有用于与汽车内侧进行固定的安装组件；一种汽车遮阳帘加工方法,包括以下步骤：a：将帘板通过扩弧装置中的延展部进行装夹；b：在帘板上钻出穿孔,之后将穿孔的两端加工出弧面；c：使用定型组件改变帘板在延展部上的安装轨道对帘板进行弯折并定型,使帘板的端部形成曲面轮廓；该技术可实现提高遮阳过程中的密封效果。(The invention belongs to the technical field of sunshade curtain processing, and particularly relates to an automobile sunshade curtain and a processing method thereof; the invention provides an automobile sunshade curtain, which consists of a curtain plate and a curtain, wherein the curtain is fixed with the curtain plate through a fastening component penetrating through the curtain plate and the curtain, and the curtain plate is provided with an installation component for fixing the curtain plate with the inner side of an automobile; a processing method of an automobile sun-shading curtain comprises the following steps: a: clamping the curtain board through an extension part in the arc expanding device; b: drilling a through hole on the curtain board, and then processing arc surfaces at two ends of the through hole; c: the shaping assembly is used for changing the mounting track of the curtain plate on the extension part to bend and shape the curtain plate, so that the end part of the curtain plate forms a curved surface outline; the technology can realize the sealing effect in the sun-shading process.)

1. An automobile sun-shading curtain is characterized in that: the automobile sun-shading curtain is composed of a curtain plate (1.1) and a curtain (1.2), wherein the curtain (1.2) is fixed with the curtain plate (1.1) through a tightening assembly penetrating through the curtain plate (1.1) and the curtain (1.2), and the curtain plate (1.1) is provided with a mounting assembly used for being fixed with the inner side of an automobile.

2. The sunshade of claim 1, wherein: it includes flat board (2.1), inserts post (2.2) and locking plate (2.3) to tighten the subassembly, install on flat board (2.1) and run through flat board (2.1) both ends insert post (2.2), the locking plate (2.3) of two symmetry concatenations are installed to the one end of inserting post (2.2), it runs through curtain (1.2) to insert post (2.2), curtain (1.2) are located between flat board (2.1) and locking plate (2.3), the locking ball structure that can warp is installed to the other end of inserting post (2.2), be equipped with the perforation that can block the locking ball structure on curtain board (1.1).

3. The sunshade of claim 2, wherein: the locking ball structure comprises an elastic sleeve (2.5) and locking blocks (2.6), the elastic sleeve (2.5) is installed on the inserting column (2.2), the periphery of the elastic sleeve (2.5) is uniformly and fixedly connected with the locking blocks (2.6), the distance between the locking blocks (2.6) can be changed through the elastic sleeve (2.5), and the locking blocks (2.6) are matched with the through holes in the curtain plate (1.1).

4. The sunshade of said vehicle according to any one of claims 2 to 3, wherein: both ends of the upper hole of the curtain board (1.1) are provided with cambered surfaces (1.5), the cambered surfaces (1.5) are matched with the elastic sleeves (2.5), and the cambered surfaces (1.5) are matched with the locking blocks (2.6).

5. The sunshade of said vehicle according to any one of claims 2 to 3, wherein: and a control ring (2.4) is arranged on the inserting column (2.2).

6. The sunshade of claim 1, wherein: the installation component comprises a slotted plate (1.3) and a sticking strip (1.4), the slotted plate (1.3) is installed on the curtain plate (1.1), the end part of the curtain plate (1.1) is set into a curved surface profile, the slotted plate (1.3) can be bent, and the curtain plate (1.1) is fixed between the sticking strip (1.4) on the slotted plate (1.3) and the inner side of the automobile through the slotted plate (1.3) and adhesion.

7. A processing method of an automobile sun-shading curtain is characterized by comprising the following steps: the method comprises the following steps:

a: clamping a curtain plate (1.1) through an extension part in an arc expanding device;

b: drilling a through hole on a curtain plate (1.1), and then processing cambered surfaces (1.5) at two ends of the through hole;

c: and (3) bending and shaping the curtain plate (1.1) by using a shaping assembly to change the mounting track of the curtain plate (1.1) on the extension part, so that the end part of the curtain plate (1.1) forms a curved profile.

8. The method for processing an automobile sun visor according to claim 7, wherein: expand the arc device including the extension that is used for clamping curtain board (1.1), install the drilling subassembly in the extension and can process out the perforation on curtain board (1.1), the symmetry is provided with two spout (1.6) on curtain board (1.1), spout (1.6) and extension cooperation.

9. The method for processing an automobile sun blind according to claim 8, characterized in that: extension portion includes bracket (3.1) and the linking arm of connecting two brackets (3.1) of two symmetry installations, and bracket (3.1) and spout (1.6) joint are installed on bracket (3.1) and are used for buckling the design subassembly of curtain board (1.1), and sliding connection has drilling subassembly on bracket (3.1) of one side.

10. The method for processing an automobile sun blind according to claim 9, characterized in that: the drilling subassembly includes control lever (4.1), pivot (4.2) and drill bit (4.3), and bracket (3.1) sliding connection of control lever (4.1) and one side, articulated being connected with pivot (4.2) on control lever (4.1), pivot (4.2) are controlled through drive assembly, and the lower extreme of pivot (4.2) is provided with drill bit (4.3), and drill bit (4.3) can process out the perforation on curtain board (1.1), install the arc subassembly of cutting that can warp in pivot (4.2), cut the arc subassembly and can cut out cambered surface (1.5) with drill bit (4.3) the both ends of perforating on curtain board (1.1).

Technical Field

The invention belongs to the technical field of sunshade curtain processing, and particularly relates to an automobile sunshade curtain and a processing method thereof.

Background

For example, application No. 201921684459.2 discloses a punching device for sunshade curtain production, which comprises a base, wherein one end of the top of the base is fixedly connected with a fixed block, the top of the fixed block is fixedly connected with a guide pillar, the outer side of the guide pillar is slidably sleeved with a mounting block, a first spring is fixedly connected between the mounting block and the fixed block, the first spring is sleeved on the outer side of the guide pillar, one side of the mounting block is fixedly connected with a push rod, one side of the mounting block, which is far away from the push rod, is fixedly connected with a support rod, one end of the support rod, which is far away from the guide pillar, is fixedly connected with a base, the inside of the base is fixedly connected with a motor, a cutter is arranged on an output shaft of the motor, the bottom of the cutter is fixedly connected with a cutting knife, the base is slidably connected with two symmetrically arranged fixed rods, and the utility model has novel structure, the operation is simple, the use is convenient, the opening efficiency of the sunshade curtain processing is improved, and the labor intensity and the labor time of manual labor are reduced; but the utility model discloses a sealed effect of sunshade in-process is not convenient for improve.

Disclosure of Invention

In view of the above, the technical problem to be solved by the present invention is to provide an automobile sunshade and a processing method thereof, which can improve the sealing effect in the sunshade process.

The invention provides an automobile sunshade curtain which comprises a curtain plate and a curtain, wherein the curtain is fixed with the curtain plate through a fastening assembly penetrating through the curtain plate and the curtain, and a mounting assembly for fixing the curtain plate with the inner side of an automobile is mounted on the curtain plate.

The tightening component comprises a flat plate, inserting columns and locking plates, the inserting columns penetrating through two ends of the flat plate are installed on the flat plate, the locking plates symmetrically spliced are installed at one ends of the inserting columns, the inserting columns penetrate through the curtain, the curtain is located between the flat plate and the locking plates, the locking ball structure capable of deforming is installed at the other end of the inserting columns, and the curtain plate is provided with through holes capable of clamping the locking ball structure.

The locking ball structure is composed of an elastic sleeve and locking blocks, the elastic sleeve is installed on the inserting column, a plurality of locking blocks are uniformly and fixedly connected to the periphery of the elastic sleeve, the distance between the locking blocks can be changed through the elastic sleeve, and the locking blocks are matched with the through holes in the curtain plates.

Both ends of the through hole on the curtain board are provided with cambered surfaces, the cambered surfaces are matched with the elastic sleeves, and the cambered surfaces are matched with the locking blocks.

A processing method of an automobile sun-shading curtain comprises the following steps:

a: clamping the curtain board through an extension part in the arc expanding device;

b: drilling a through hole on the curtain board, and then processing arc surfaces at two ends of the through hole;

c: and (3) changing the mounting track of the curtain plate on the extension part by using the shaping assembly to bend and shape the curtain plate, so that the end part of the curtain plate forms a curved profile.

The invention has the beneficial effects that:

the two curtain plates are symmetrically arranged at the two ends of the curtain, and the design is convenient for shading the sun by using the curtain horizontally or vertically; the plurality of curtain plates are arranged on the periphery of the curtain, so that the sealing effect in the sun shading process is improved;

the curtain plate is processed into a curved surface outline, so that the attaching effect between the curtain plate and the inner side of the automobile is improved, and the sealing effect in the sun shading process is further improved;

the cambered surfaces are processed at the two ends of the through hole, so that the stability of the sunshade curtain in the using process can be improved.

Drawings

The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of the construction of a curtain provided by the present invention;

FIG. 2 is a schematic structural view of a stake provided in the present invention;

FIG. 3 is a schematic structural diagram of a lock block provided in the present invention;

FIG. 4 is a schematic structural view of a bracket according to the present invention;

FIG. 5 is a schematic structural view of a slider according to the present invention;

FIG. 6 is a schematic structural diagram of a rotating shaft according to the present invention;

FIG. 7 is a schematic view of a gear according to the present invention;

FIG. 8 is a schematic structural view of a hinge block provided by the present invention;

FIG. 9 is a schematic structural view of a hinge plate provided in the present invention;

fig. 10 is a schematic structural view of the telescopic rod provided by the present invention.

In the figure:

a curtain plate 1.1;

a curtain 1.2;

a slotted plate 1.3;

1.4 of a sticking strip;

the cambered surface is 1.5;

a chute 1.6;

plate 2.1;

inserting a column 2.2;

2.3 of the locking plate;

a control loop 2.4;

2.5 of an elastic sleeve;

the locking block is 2.6;

a bracket 3.1;

a slide arm 3.2;

3.3 of a slide bar;

bending the column 3.4;

the locking bar I is 3.5;

a locking bar II 3.6;

a locking arm 3.7;

a control rod 4.1;

a rotating shaft 4.2;

a drill bit 4.3;

4.4 of a rotating frame;

a bending knife 4.5;

a hinge block 4.6;

a gear 5.1;

a rack 5.2;

a connecting arm 5.3;

a sliding table 5.4;

a hinged plate 5.5;

6.1 of a telescopic rod;

a hinge block 6.2;

drum 6.3.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention.

As a further improved technical solution of the present invention, refer to fig. 1:

the curtain 1.2 is arranged on the curtain plate 1.1 through the fastening assembly, and then the curtain plate 1.1 is fixed on the inner side of the automobile through the mounting assembly, so that the sun-shading function is realized;

two curtain plates 1.1 can be arranged, and the two curtain plates 1.1 are symmetrically arranged at two ends of the curtain 1.2, so that the curtain 1.2 can be tightened, and the sun-shading effect of the curtain 1.2 is improved;

furthermore, the two curtain plates 1.1 are symmetrically arranged at the two ends of the curtain 1.2, and the design is convenient for shading the sun by using the curtain 1.2 horizontally or vertically;

furthermore, the curtain plates 1.1 are symmetrically arranged at the two ends of the curtain 1.2, and by the design, the surface of the curtain 1.2 can have an anti-wrinkle effect, so that the wind resistance of the curtain 1.2 is improved;

the curtain plates 1.1 can be arranged in a plurality of numbers, and the plurality of curtain plates 1.1 are arranged on the periphery of the curtain 1.2, so that the sealing effect in the sun shading process is improved.

As a further improved technical solution of the present invention, refer to fig. 1-2:

the inserting column 2.2 penetrates through the curtain 1.2, the curtain 1.2 is positioned between the flat plate 2.1 and the locking plate 2.3, the detachable function is realized through the deformable locking ball structure arranged on the inserting column 2.2, and the curtain 1.2 can be taken down when the curtain 1.2 is not needed;

the design that the through holes on the curtain plate 1.1 are matched with the locking ball structure can improve the firm effect in the using process, so that the strength of the curtain 1.2 in the using process is improved;

due to the design of the two symmetrically-spliced locking plates 2.3, the firmness of positioning the curtain 1.2 between the flat plate 2.1 and the locking plates 2.3 can be improved, so that the anti-falling performance of the curtain 1.2 is improved;

the curtain 1.2 can be made of elastic materials, and the effect of tensioning the curtain 1.2 is realized by keeping the elastic deformation state, so that the wind resistance of the curtain 1.2 is improved;

set curtain 1.2 to elastic material, make the perforation that the locking ball structure passed different positions, realize carrying out the function that expandes curtain 1.2, shelter from wider illumination, can make curtain board 1.1 and curtain 1.2 can use at the window limit of multiple size simultaneously.

As a further improved technical solution of the present invention, refer to fig. 2:

the elastic sleeve 2.5 is fixed on the inserting column 2.2, then a plurality of locking blocks 2.6 are arranged on the outer side of the elastic sleeve 2.5, and the elastic sleeve 2.5 has the characteristic of elastic deformation, so that the locking blocks 2.6 can deform when passing through the through holes, and the design can improve the clamping effect between the locking blocks 2.6 and the curtain plate 1.1, thereby improving the fixing effect between the locking blocks 2.6 and the curtain plate 1.1, further improving the anti-falling effect of the curtain 1.2 at the position of the curtain plate 1.1, and realizing that the curtain 1.2 can still be firmly used for shading when shaking in the driving process of an automobile;

the distance between the locking blocks 2.6 can be changed through the elastic sleeves 2.5, and the design ensures that the processing precision of the through holes on the curtain board 1.1 has no high requirement, thereby improving the use adaptability;

the flat plate 2.1 is arranged on the inserting column 2.2, and after the locking ball structure passes through the through hole on the curtain plate 1.1, the flat plate 2.1 is controlled to be attached to the curtain plate 1.1, so that the anti-shaking effect of the curtain plate 1.2 in the using process is improved.

As a further improved technical solution of the present invention, refer to fig. 2-3:

the elastic sleeve 2.5 and the side part of the locking block 2.6 are arranged to be spherical surfaces, and when the cambered surface 1.5 is matched with the locking block 2.6, the abrasion-resistant effect at the position of the through hole on the curtain plate 1.1 can be improved, so that the service life of the sunshade curtain is prolonged;

the elastic sleeve 2.5 is made of an elastically deformable material, and when the locking ball structure penetrates through and is clamped at the perforation on the curtain board 1.1, the elastic sleeve 2.5 can apply a force to the curtain board 1.1 to improve the bonding effect between the flat plate 2.1 and the curtain board 1.1, so that the shaking degree between the locking ball structure and the curtain board 1.1 in the using process is reduced;

the design that cambered surface 1.5 and elastic sleeve 2.5 cooperate can reduce the destruction that causes elastic sleeve 2.5 when removing inserted column 2.2.

As a further improved technical solution of the present invention, refer to fig. 1-2:

and a control ring 2.4 is arranged on the inserted column 2.2.

The design of the control ring 2.4 is convenient for controlling the inserted column 2.2;

further, the design of the control ring 2.4 can provide a user with a means for hanging objects, thereby improving the practicability of the sunshade.

As a further improved technical solution of the present invention, refer to fig. 1:

the installation component comprises a slotted plate 1.3 and a strip 1.4, the slotted plate 1.3 is installed on the curtain plate 1.1, the end part of the curtain plate 1.1 is set to be a curved surface outline, the slotted plate 1.3 can be bent, and the curtain plate 1.1 is fixed between the slotted plate 1.3 and the strip 1.4 adhered to the slotted plate 1.3 and the inner side of the automobile.

The end part of the curtain plate 1.1 is designed to be a curved surface outline, so that the attaching effect between the curtain plate 1.1 and the inner side of the automobile is improved conveniently, and the curtain plate is suitable for shielding automobile glass in various shapes;

when making the laminating between curtain board 1.1 and the car inboard, sunshine takes place the edge leakage when can avoiding the sunshade screen to shelter from sunshine, and then improves the result of use of sunshade screen.

As a further improved technical solution of the present invention, refer to fig. 4:

expand the arc device including the extension that is used for clamping curtain 1.1, install drilling subassembly on the extension and can process out the perforation on the curtain 1.1, the symmetry is provided with two spouts 1.6 on the curtain 1.1, spout 1.6 and extension cooperation.

When the curtain board 1.1 is processed, the sliding grooves 1.6 are processed at the two sides of the curtain board 1.1, so that the sliding grooves 1.6 are matched with the extension parts, thereby realizing the positioning function;

furthermore, the design of the sliding chute 1.6 matched with the extension part is convenient for controlling the curtain board 1.1 to slide on the extension part, thereby being convenient for processing a plurality of through holes on the curtain board 1.1 through the drilling assembly;

the perforations provide space for the elastic sleeve 2.5 and the locking piece 2.6 to pass through, so that the curtain 1.2 can be fixed on the curtain plate 1.1 for use.

As a further improved technical solution of the present invention, refer to fig. 4-6:

extension portion includes the linking arm of two brackets 3.1 of symmetry installation and two brackets 3.1 of connection, bracket 3.1 and spout 1.6 joint, installs the design subassembly that is used for buckling curtain board 1.1 on the bracket 3.1, and sliding connection has drilling subassembly on the bracket 3.1 of one side.

Due to the design that the bracket 3.1 is clamped with the sliding groove 1.6, after the curtain plate 1.1 is processed with the through hole by the drilling assembly, the curtain plate 1.1 slides on the bracket 3.1 through the sliding groove 1.6, and other through hole positions for subsequent processing are replaced, so that the function of quick clamping is realized;

the end part of the curtain board 1.1 can be tightly attached to the bracket 3.1, so that the stability of the process of processing the through hole on the curtain board 1.1 through the drilling component is improved.

As a further improved technical solution of the present invention, refer to fig. 4 and 6:

the drilling component comprises a control rod 4.1, a rotating shaft 4.2 and a drill bit 4.3, the control rod 4.1 is in sliding connection with the bracket 3.1 on one side, the rotating shaft 4.2 is hinged to the control rod 4.1, the rotating shaft 4.2 is controlled through a driving component, the drill bit 4.3 is arranged at the lower end of the rotating shaft 4.2, and the drill bit 4.3 can process out a through hole in the curtain board 1.1.

Due to the design that the control rod 4.1 is in sliding connection with the bracket 3.1, the alignment effect between the drill bit 4.3 and the middle part of the curtain board 1.1 is improved;

furthermore, the design of the sliding connection of the control rod 4.1 and the bracket 3.1 is convenient for processing perforations with various depths on the curtain board 1.1 through the drilling assembly;

the driving assembly can drive the rotating shaft 4.2 to rotate on the control rod 4.1 by taking the axis of the rotating shaft as a shaft, so that a through hole is processed on the curtain plate 1.1 after the drill bit 4.3 is contacted with the curtain plate 1.1;

the driving assembly can control the rotating shaft 4.2 in a speed reducing motor mode, the speed reducing motor is installed on the control rod 4.1, the output shaft of the speed reducing motor is fixedly connected with the rotating shaft 4.2, and therefore the rotating shaft 4.2 is controlled by starting the speed reducing motor.

As a further improved technical solution of the present invention, refer to fig. 4-5:

install the arc subassembly of cutting that can warp on pivot 4.2, cut the arc subassembly and can cut out the cambered surface 1.5 that the radian can be adjusted with drill bit 4.3 fenestrate both ends on shutter board 1.1.

The arc-shaped surfaces 1.5 are cut at the two ends of the through hole in the curtain board 1.1 through the arc cutting assembly, the elastic sleeve 2.5 and the side part of the locking piece 2.6 are arranged to be spherical surfaces, so that when the arc-shaped surfaces 1.5 are matched with the locking piece 2.6, the matching relation between the arc-shaped surfaces 1.5 and the locking piece 2.6 is changed from line matching to surface matching, the abrasion-resistant effect of the through hole in the curtain board 1.1 is improved, and the service life of the sunshade curtain is prolonged;

the design that the cambered surface 1.5 is matched with the elastic sleeve 2.5 can reduce the damage to the elastic sleeve 2.5 when the inserting column 2.2 is moved;

the cambered surface 1.5 is processed into a design with adjustable radian, so that the adaptability of the curtain board 1.1 to various types of locking ball structures can be improved.

As a further improved technical solution of the present invention, refer to fig. 5:

the design subassembly includes cursor slide 3.2, draw runner 3.3 and the post 3.4 of bending, installs cursor slide 3.2 on the bracket 3.1, and sliding connection has draw runner 3.3 on the cursor slide 3.2, installs the post 3.4 of bending on the draw runner 3.3, and the post 3.4 of bending inlays in spout 1.6, locks through locating component between draw runner 3.3 and the bracket 3.1.

The bending column 3.4 is inserted into the chute 1.6, the control slide bar 3.3 slides on the slide arm 3.2 at the moment, the bending column 3.4 changes the installation track of the curtain plate 1.1 on the extension part to bend and shape the curtain plate 1.1, and the end part of the curtain plate 1.1 forms a curved surface profile;

the design that curtain board 1.1 tip was the curved surface profile is convenient for make the laminating effect between curtain board 1.1 and the car inboard improve, is applicable to sheltering from the car glass of multiple shape.

The positioning assembly comprises a locking bar I3.5, a locking bar II 3.6 and a locking arm 3.7, wherein the locking bar I3.5 is installed on the bracket 3.1, the locking bar II 3.6 is installed on the slide bar 3.3, at least two positioning holes are formed in the locking arm 3.7, and the locking bar I3.5 and the locking bar II 3.6 are respectively matched with the two positioning holes.

Make locking arm 3.7 cover simultaneously on locking strip I3.5 and locking strip II 3.6 to the effect of locking between 3.3 of draw runner and the cursor slide 3.2 is realized, realizes the design effect after buckling to curtain board 1.1 through the design subassembly then, improves the effect of buckling to curtain board 1.1.

As a further improved technical solution of the present invention, refer to fig. 6 and 8:

the arc cutting assembly comprises a rotating frame 4.4 and a bending knife 4.5, the rotating frame 4.4 is arranged on a rotating shaft 4.2, the bending knife 4.5 is respectively installed at two ends of the rotating frame 4.4, the bending knife 4.5 can elastically deform, the middle of the bending knife 4.5 is fixedly connected with the rotating frame 4.4, a retaining assembly is connected between the end part of the bending knife 4.5 and the rotating shaft 4.2, and an adjusting assembly used for changing the bending amplitude of the bending knife 4.5 is arranged between the retaining assembly and a control rod 4.1.

The rotating frame 4.4 is fixedly connected with the rotating shaft 4.2, and two ends of the rotating frame 4.4 are provided with bending knives 4.5 which can elastically deform, so that after the bending knives 4.5 penetrate through the curtain board 1.1, the rotating shaft 4.2 rotates by taking the axis of the rotating shaft 4.2 as a shaft, and the bending knives 4.5 can process two ends of a through hole into cambered surfaces 1.5;

the middle part of the bending knife 4.5 is fixedly connected with the rotating frame 4.4, and the design can improve the symmetrical effect of the single bending knife 4.5 after deformation, thereby improving the stable effect in the processing process.

As a further improved technical scheme of the invention, refer to FIGS. 6-7 and 9:

the retaining assembly comprises two hinge blocks 4.6, two sliding tables 5.4 and two hinge plates 5.5, two ends of each bending knife 4.5 are fixedly connected with the two hinge blocks 4.6, the sliding tables 5.4 are connected to the rotating shaft 4.2 in a sliding mode, the sliding tables 5.4 are symmetrically hinged with the two hinge plates 5.5, the hinge plates 5.5 are hinged with the two hinge blocks 4.6, the sliding tables 5.4 are provided with two, and the two sliding tables 5.4 are symmetrically installed.

The position of the sliding table 5.4 on the rotating shaft 4.2 is changed, so that the hinged plate 5.5 bends the bending knife 4.5, and the radian of the bending knife 4.5 is changed.

As a further improved technical solution of the present invention, refer to fig. 7:

the holding assembly further comprises a gear 5.1, a rack 5.2 and a connecting arm 5.3, the sliding table 5.4 is fixedly connected with the rack 5.2 through the connecting arm 5.3, the gear 5.1 is hinged to the rotating frame 4.4, and two ends of the gear 5.1 are in transmission connection with the two symmetrically-installed racks 5.2 respectively.

The design of the gear 5.1 and the rack 5.2 can keep the bending amplitude of the two ends of the bending knife 4.5 the same.

As a further improved technical solution of the present invention, refer to fig. 10:

the adjusting part comprises a telescopic rod 6.1, a hinged block 6.2 and a rotary drum 6.3, the telescopic rod 6.1 is installed on the control rod 4.1, the fixed end of the telescopic rod 6.1 is fixedly connected with the control rod 4.1, the hinged block 6.2 is fixedly connected with the movable end of the telescopic rod 6.1, the hinged block 6.2 is hinged with the rotary drum 6.3, and the rotary drum 6.3 is fixedly connected with a sliding table 5.4.

The telescopic rod 6.1 is started to stretch, so that the bending amplitude of the bending knife 4.5 can be kept;

the hinging block 6.2 is hinged with the rotary drum 6.3, so that the bending operation of the bending knife 4.5 is controlled, and the rotation of the rotary shaft 4.2 is not influenced;

the bending of the bending knife 4.5 is controlled, so that the bending knife 4.5 can be conveniently inserted into or pulled out of the perforation on the curtain board 1.1.