Profile traction device

Abstract

The utility model belongs to the technical field of glass fiber processing, and discloses a profile traction device. The profile traction device comprises a support, a first mounting frame, a transmission belt, a second mounting frame and a lower roll shaft, wherein the first mounting frame is adjustably arranged on the support; the conveyor belt is rotationally arranged on the first mounting frame; a plurality of adsorption assemblies are uniformly arranged on the surface of the conveyor belt in the length direction of the conveyor belt; the second mounting rack is adjustably arranged on the bracket, and the second mounting rack is arranged below the first mounting rack; the lower roller shaft is rotationally arranged on the second mounting frame, a passing space extending in the first direction is formed between the conveying belt and the lower roller shaft, the passing space is used for passing of the sectional materials, the adsorption assembly is used for adsorbing the top end faces of the sectional materials located in the passing space, and the lower roller shaft is used for abutting against the bottom end faces of the sectional materials located in the passing space. The sectional material traction device can increase the traction force on the sectional material and prevent the sectional material from slipping in the traction process to affect the pultrusion treatment of the sectional material.

Description

Technical Field

[0001] The utility model relates to the technical field of glass fiber processing equipment, in particular to a profile traction device. Background Art

[0002] Glass fiber Reinforced Polyurethane (GRPU) is a high-performance composite material composed of a polyurethane matrix and a glass fiber reinforcing material; the production process of glass fiber reinforced polyurethane mainly includes steps such as raw material preparation, pretreatment, mixing, injection molding, and forming. Among them, the continuous pultrusion process is a commonly used forming process, which has advantages such as high production efficiency, high raw material utilization rate, and low production cost.

[0003] Existing traction devices for the pultrusion process usually use reciprocating sliding clamping devices or rotating roller devices to pull profiles. In order to prevent slipping between the traction device and the profile, anti-slip patterns or anti-slip materials are usually provided at the contact part between the traction device and the profile. However, the pulling force of the profile pulled by the traction device is usually determined by the normal pressure of the traction device on the profile and the friction coefficient between the traction device and the profile; if the traction device applies too large a normal pressure to the profile, it is easy to damage the profile, and the surface of the profile is usually relatively smooth. When pulling the profile and encountering a large resistance, it often leads to slipping between the traction device and the profile, seriously affecting the production efficiency of the profile. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a profile traction device, which can increase the traction force on the profile and prevent the profile from slipping during traction, thereby affecting the pultrusion process of the profile.

[0005] Deviation or skew occurs during pultrusion.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a profile traction device, comprising:

[0008] A bracket;

[0009] A first mounting rack, which is arranged on the bracket in a position-adjustable manner along the height direction of the bracket;

[0010] A conveyor belt, which is rotatably arranged on the first mounting rack, and a plurality of adsorption components are uniformly arranged on the surface of the conveyor belt along the length direction of the conveyor belt;

[0011] A second mounting bracket, which is disposed on the bracket in a height direction adjustable manner along the bracket, and the second mounting bracket is disposed below the first mounting bracket;

[0012] A lower roller shaft, which is rotatably disposed on the second mounting bracket. There is a passing space extending in a first direction between the conveyor belt and the lower roller shaft. The passing space is for the profile to pass through. The adsorption assembly is used to adsorb the top surface of the profile located in the passing space, and the lower roller shaft is used to abut against the bottom surface of the profile located in the passing space.

[0013] Preferably, the profile traction device further includes a limiting assembly. The limiting assembly includes a first clamping arm and a second clamping arm symmetrically disposed on the bracket with respect to the first direction. An entry channel facing the passing space in the first direction is formed between the first clamping arm and the second clamping arm. The first clamping arm and the second clamping arm are used to respectively abut against opposite sides of the profile in the horizontal direction.

[0014] Preferably, both the first clamping arm and the second clamping arm are hingedly connected to the bracket, and tension springs are respectively disposed between the first clamping arm and the bracket and between the second clamping arm and the bracket;

[0015] The two tension springs can respectively apply acting forces to the first clamping arm and the second clamping arm, so that the first clamping arm and the second clamping arm respectively abut against the profile.

[0016] Preferably, rollers are disposed on both the first clamping arm and the second clamping arm, and the rollers are used to abut against the profile.

[0017] Preferably, the adsorption assembly includes an elastic support film and a one-way valve. The elastic support film is disposed on the surface of the conveyor belt. An adsorption cavity is formed by the elastic support film recessing inward perpendicular to the surface of the conveyor belt. The one-way valve is disposed at one end of the adsorption cavity close to the conveyor belt. The one-way valve is used to make air flow unidirectionally, and the elastic support film can elastically deform under the action of an external force to squeeze the adsorption cavity.

[0018] Preferably, the adsorption cavity is in a horn shape.

[0019] Preferably, the one-way valve abuts against the conveyor belt in a direction perpendicular to the surface of the conveyor belt, and ventilation holes are formed in the conveyor belt, and the ventilation holes are disposed opposite to the air outlet of the one-way valve.

[0020] Preferably, an installation through groove is formed in the conveyor belt, the elastic support film is disposed in the installation through groove, the elastic support film has an adsorption end protruding from the surface of the conveyor belt, and the adsorption cavity is recessed in the adsorption end.

[0021] Preferably, a plurality of the installation through grooves are uniformly arranged at intervals along the length direction of the conveyor belt.

[0022] Preferably, two upper roller shafts are rotatably arranged on the first mounting frame, and the axes of the upper roller shafts are parallel to the axis of the lower roller shaft;

[0023] The profile traction device further includes a driving member disposed on the first mounting frame. The driving member is connected to one of the upper roller shafts. The driving member is configured to drive the upper roller shaft to rotate, and the conveyor belt is wound around the two upper roller shafts and is in rolling cooperation with the two upper roller shafts.

[0024] The beneficial effects of the present invention are as follows:

[0025] For the profile traction device provided by the present invention, a first mounting frame and a second mounting frame are arranged on the bracket along the height direction. The first mounting frame is disposed above the second mounting frame. A conveyor belt is rotatably arranged on the first mounting frame, and a lower roller shaft is rotatably arranged on the second mounting frame. Since there is a passage space for the profile to pass between the conveyor belt and the lower roller shaft, and both the first mounting frame and the second mounting frame can move along the height direction on the bracket, the profile traction device can adjust the positions of the first mounting frame and the second mounting frame on the bracket to traction profiles of different sizes and specifications, thereby expanding the applicable range of the profile traction device; since the adsorption components are uniformly arranged along the length direction on the conveyor belt, and the adsorption components are used to adsorb the top surface of the profile in the passage space, when the lower roller shaft and the conveyor belt rotate to traction and convey the profile in the passage space, the adsorption components can increase the traction force of the conveyor belt on the profile, preventing the profile from slipping between the conveyor belt and the lower roller shaft during the conveying process, thus ensuring the smooth progress of the profile extrusion process. Description of the Drawings

[0026] Figure 1 is a schematic structural view of the profile traction device provided by the specific embodiment of the present invention;

[0027] Figure 2 is a sectional view of the conveyor belt and the adsorption components provided by the specific embodiment of the present invention;

[0028] Figure 3 is Figure 2 a partial enlarged view of part A in

[0029] Figure 4It is a schematic structural diagram of the adsorption component provided by the specific embodiment of the present utility model.

[0030] In the figure:

[0031] 100 - Profile

[0032] 1 - Bracket

[0033] 2 - First mounting frame

[0034] 3 - Conveyor belt

[0035] 4 - Adsorption component; 41 - Elastic support film; 411 - Adsorption cavity; 42 - Check valve

[0036] 5 - Second mounting frame

[0037] 6 - Lower roller shaft

[0038] 7 - Limiting component; 71 - First clamping arm; 72 - Second clamping arm; 73 - Tensile spring; 74 - Roller

[0039] 8 - Upper roller shaft

[0040] 9 - Driving part Specific embodiment

[0041] The following further details the present utility model in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0042] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0044] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right" and "left" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0045] Such as Figure 1 And Figure 2As shown in the figure, the utility model provides a profile traction device, which includes a bracket 1, a first mounting bracket 2, a conveyor belt 3, a second mounting bracket 5 and a lower roller shaft 6. The first mounting bracket 2 is arranged on the bracket 1 in a position-adjustable manner along the height direction of the bracket 1; the conveyor belt 3 is rotatably arranged on the first mounting bracket 2, and a plurality of adsorption components 4 are uniformly arranged on the surface of the conveyor belt 3 along the length direction of the conveyor belt 3; the second mounting bracket 5 is arranged on the bracket 1 in a position-adjustable manner along the height direction of the bracket 1, and the second mounting bracket 5 is arranged below the first mounting bracket 2; the lower roller shaft 6 is rotatably arranged on the second mounting bracket 5, and there is a passing space extending along the first direction between the conveyor belt 3 and the lower roller shaft 6. The passing space is used for the profile 100 to pass through. The adsorption component 4 is used to adsorb the top surface of the profile 100 located in the passing space, and the lower roller shaft 6 is used to abut against the bottom surface of the profile 100 located in the passing space. In this embodiment, the first mounting bracket 2 and the second mounting bracket 5 are arranged on the bracket 1 along the height direction, the first mounting bracket 2 is arranged above the second mounting bracket 5, the conveyor belt 3 is rotatably arranged on the first mounting bracket 2, and the lower roller shaft 6 is rotatably arranged on the second mounting bracket 5. Since there is a passing space for the profile 100 to pass through between the conveyor belt 3 and the lower roller shaft 6, and both the first mounting bracket 2 and the second mounting bracket 5 can move along the height direction on the bracket 1, the profile traction device can adjust the positions of the first mounting bracket 2 and the second mounting bracket 5 on the bracket 1 to traction profiles 100 of different sizes and specifications, thereby expanding the applicable range of the profile traction device; since the adsorption components 4 are uniformly arranged on the conveyor belt 3 along the length direction, and the adsorption components 4 are used to adsorb the top surface of the profile 100 in the passing space, when the lower roller shaft 6 and the conveyor belt 3 rotate to traction and convey the profile 100 in the passing space, the adsorption components 4 can increase the traction force of the conveyor belt 3 on the profile 100 and prevent the profile 100 from slipping between the conveyor belt 3 and the lower roller shaft 6 during the conveying process, thereby ensuring the smooth progress of the pultrusion process of the profile 100. Specifically, slide rails are arranged on the bracket 1 along the vertical direction, and both ends of the first mounting bracket 2 and the second mounting bracket 5 are slidably matched with the slide rails. In addition, two electric push rods are arranged on the bracket 1 and are respectively connected to the first mounting bracket 2 and the second mounting bracket 5. Thus, driven by the electric push rods, the first mounting bracket 2 and the second mounting bracket 5 can move vertically on the bracket 1, so as to adjust the height of the passing space according to the thickness of the profile 100 and traction profiles 100 of different sizes.

[0046] As Figure 1As shown, in this embodiment, two upper roller shafts 8 are rotatably arranged on the first mounting bracket 2, and the axis of the upper roller shaft 8 is parallel to the axis of the lower roller shaft 6; the profile traction device further includes a driving member 9, the driving member 9 is arranged on the first mounting bracket 2, the driving member 9 is connected to one of the upper roller shafts 8, and the driving member 9 is used to drive the upper roller shaft 8 to rotate, and the conveyor belt 3 is wound around the two upper roller shafts 8 and is in rolling cooperation with the two upper roller shafts 8. Specifically, the first direction is the length direction of the conveyor belt 3, that is, the direction in which the profile 100 is pulled; the two upper roller shafts 8 are arranged on the first mounting bracket 2 at intervals along the first direction, the axes of the upper roller shafts 8 are parallel to the axis of the lower roller shaft 6, and the conveyor belt 3 is wound around the two upper roller shafts 8 and is in a tensioned state, that is, the two upper roller shafts 8 are driven by the conveyor belt; one of the upper roller shafts 8 is connected to the output end of the driving member 9, and the driving member 9 is used to drive the upper roller shaft 8 to rotate, thereby driving the conveyor belt 3 to drive and pull the profile 100.

[0047] Further, as Figure 1 shown, the profile traction device further includes a limiting component 7, the limiting component 7 includes a first clamping arm 71 and a second clamping arm 72 symmetrically arranged on the bracket 1 with respect to the first direction, and an entry channel for passing through space is formed between the first clamping arm 71 and the second clamping arm 72 in the first direction, and the first clamping arm 71 and the second clamping arm 72 are used to respectively abut against the two opposite sides of the profile 100 in the horizontal direction. In this embodiment, the first clamping arm 71 and the second clamping arm 72 are both arranged on the bracket 1, and an entry channel is formed between the first clamping arm 71 and the second clamping arm 72, and the entry channel faces the passing space in the first direction; when using this profile traction device to pull the profile 100, the first clamping arm 71 and the second clamping arm 72 respectively abut against the two sides of the profile 100, so that the profile 100 is aligned with the passing space in the first direction, avoiding deviation or skew during the pulling process of the profile 100, which may cause the profile 100 to not be adsorbed by the adsorption component 4, thereby ensuring the production yield of the pultrusion process of the profile 100.

[0048] Specifically, as Figure 1As shown, both the first clamping arm 71 and the second clamping arm 72 are hingedly connected to the bracket 1. Tensile springs 73 are provided between the first clamping arm 71 and the bracket 1, and between the second clamping arm 72 and the bracket 1; the two tensile springs 73 can respectively apply forces to the first clamping arm 71 and the second clamping arm 72, so that the first clamping arm 71 and the second clamping arm 72 respectively abut against the profile 100. In this embodiment, one end of the first clamping arm 71 is hingedly connected to the bracket 1, and the first clamping arm 71 is also connected to the bracket 1 through the tensile spring 73. The tensile spring 73 can apply a pulling force to the first clamping arm 71, so that the first clamping arm 71 always has a tendency to turn towards the bracket 1; similarly, the second clamping arm 72 is also connected to the bracket 1 through the tensile spring 73. When using this traction device to traction the profile 100, the end of the profile 100 extends into the passing space through the entrance channel. The profile 100 at the entrance channel position abuts against the first clamping arm 71 and the second clamping arm 72 on both sides; since both the first clamping arm 71 and the second clamping arm 72 are connected to the bracket 1 through the same tensile spring 73, if the profile 100 is offset, the first clamping arm 71 and the second clamping arm 72 will automatically adjust the pressure on the side of the profile 100 under the elastic force of the tensile spring 73, so that the offset profile 100 is restored to its original position to align with the passing space, thus ensuring the production yield of the pultrusion process of the profile 100.

[0049] Specifically, as Figure 1 shown, rollers 74 are provided on both the first clamping arm 71 and the second clamping arm 72. The rollers 74 are used to abut against the profile 100. In this embodiment, rollers 74 are rotatably provided at the ends of the first clamping arm 71 and the second clamping arm 72 away from the bracket 1. The rollers 74 are arranged vertically, and the rollers 74 are in rolling contact with the profile 100, thereby reducing the friction between the first clamping arm 71 and the second clamping arm 72 and the profile 100, and reducing energy loss and material wear.

[0050] Furthermore, as Figures 2 to 4As shown, the adsorption assembly 4 includes an elastic support film 41 and a one-way valve 42. The elastic support film 41 is disposed on the surface of the conveyor belt 3. An adsorption cavity 411 is formed by inward depression perpendicular to the surface of the conveyor belt 3 on the elastic support film 41. The one-way valve 42 is disposed at one end of the adsorption cavity 411 close to the conveyor belt 3. The one-way valve 42 is used to make air flow unidirectionally. The elastic support film 41 can undergo elastic deformation under the action of an external force to squeeze the adsorption cavity 411. In this embodiment, an elastic support film 41 is disposed on the surface of the conveyor belt 3. A plurality of adsorption cavities 411 are evenly recessed on the elastic support film 41. A one-way valve 42 is disposed at the outlet of one end of the adsorption cavity 411 close to the conveyor belt 3. When the conveyor belt 3 drives the elastic support film 41 to rotate and contact the profile 100, the elastic support film 41 will press against the surface of the profile 100. At this time, the elastic support film 41 undergoes elastic deformation and squeezes the adsorption cavity 411. The gas in the adsorption cavity 411 will flow out through the one-way valve 42, thereby forming an internal and external pressure difference so that the profile 100 is adsorbed. Specifically, the elastic support film 41 is made of rubber or PVC, can undergo elastic deformation under pressure, and can automatically return to its initial shape when the pressure disappears.

[0051] Specifically, as Figure 3 and Figure 4 shown, the adsorption cavity 411 is trumpet-shaped. In this embodiment, the adsorption cavity 411 is formed by inward depression on the surface of the elastic support film 41. The diameter of the adsorption cavity 411 gradually becomes smaller along the depression direction, forming a trumpet-shaped structure with a large opening and a small outlet, so as to be more stable and firm when adsorbing the profile 100.

[0052] Specifically, the one-way valve 42 abuts against the conveyor belt 3 in a direction perpendicular to the surface of the conveyor belt 3. Vent holes are provided on the conveyor belt 3, and the vent holes are disposed opposite to the air outlet of the one-way valve 42. In this embodiment, the elastic support film 41 is disposed on the surface of the conveyor belt 3. The adsorption cavity 411 is recessed on the elastic support film 41. The one-way valve 42 at the outlet of the adsorption cavity 411 faces the surface of the conveyor belt 3 and abuts against the conveyor belt 3, so as to prevent the overall collapse of the elastic support film 41 caused by the pressing of the elastic support film 41 against the profile 100 and unable to effectively adsorb the profile 100 when adsorbing the profile 100. Vent holes are provided at positions on the conveyor belt 3 corresponding to the adsorption cavities 411, and the vent holes are disposed opposite to the air outlet of the one-way valve 42, so that when adsorbing the profile 100, the air in the adsorption cavity 411 can be smoothly discharged through the vent holes.

[0053] Specifically, an installation through groove is formed in the conveyor belt 3, and the elastic support film 41 is arranged in the installation through groove. The elastic support film 41 has an adsorption end protruding from the surface of the conveyor belt 3, and the adsorption cavity 411 is recessed in the adsorption end. In this embodiment, an installation through groove is formed in the surface of the conveyor belt 3. The cross-section of the elastic support film 41 is in an arc shape with the middle position protruding upward. The edge of the elastic support film 41 is fixed on the inner wall surface of the installation through groove. The adsorption end of the elastic support film 41 protrudes from the surface of the conveyor belt 3, and the adsorption cavity 411 is recessed in the adsorption end of the elastic support film 41. When adsorbing the profile 100, the adsorption end of the elastic support film 41 protruding from the conveyor belt 3 will first abut against the surface of the profile 100, and the elastic support film 41 will undergo elastic deformation. The air in the adsorption cavity 411 will be discharged through the one-way valve 42, thereby realizing the adsorption of the profile 100. At the same time, the elastic support film 41 will undergo elastic retraction after being pressed, so that the adsorption end is flush with the surface of the conveyor belt 3. When pulling the profile 100, while the profile 100 is adsorbed by the adsorption assembly 4, it can also be in contact with the surface of the conveyor belt 3, thereby increasing the contact area between the profile 100 and the profile traction device, and further enhancing the traction force on the profile 100. Specifically, anti-slip patterns are provided on the surface of the conveyor belt 3 outside the installation through groove, which can increase the friction with the profile 100.

[0054] Specifically, as Figure 1 and Figure 2 shown, a plurality of installation through grooves are arranged at equal intervals along the length direction of the conveyor belt 3. In this embodiment, a plurality of installation through grooves are uniformly arranged along the length direction of the conveyor belt 3. An elastic support film 41 is arranged in each installation through groove, and a plurality of adsorption cavities 411 are respectively and uniformly recessed in each elastic support film 41. The adsorption cavities 411 can adsorb the profile 100 located in the passing space, thereby ensuring that the profile traction device can always uniformly and stably pull the profile 100.

[0055] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A profile pulling device, characterized in that: include: Bracket (1); A first mounting frame (2), the first mounting frame (2) being arranged on the bracket (1) in an adjustable position along the height direction of the bracket (1); A conveyor belt (3), the conveyor belt (3) being rotatably mounted on the first mounting frame (2), and a plurality of adsorption components (4) being evenly arranged on the surface of the conveyor belt (3) along the length direction of the conveyor belt (3); A second mounting frame (5), the second mounting frame (5) being arranged on the bracket (1) in an adjustable position along the height direction of the bracket (1), and the second mounting frame (5) being arranged below the first mounting frame (2); A lower roller (6), wherein the lower roller (6) is rotatably mounted on the second mounting frame (5); a passing space extending along a first direction is provided between the conveyor belt (3) and the lower roller (6); the passing space is used for the profile (100) to pass through; the adsorption assembly (4) is used for adsorbing the top end surface of the profile (100) located in the passing space; and the lower roller (6) is used for abutting against the bottom end surface of the profile (100) located in the passing space.

2. The profile pulling device according to claim 1, characterized in that: The profile pulling device further comprises a limiting assembly (7), the limiting assembly (7) comprising a first clamping arm (71) and a second clamping arm (72) symmetrically arranged on the bracket (1) with respect to the first direction, an entry passage facing the passing space along the first direction is formed between the first clamping arm (71) and the second clamping arm (72), and the first clamping arm (71) and the second clamping arm (72) are used to respectively abut against two opposite sides of the profile (100) along the horizontal direction.

3. The profile pulling device according to claim 2, characterized in that: The first clamp arm (71) and the second clamp arm (72) are both hingedly connected to the bracket (1), and a tension spring (73) is provided between the first clamp arm (71) and the bracket (1), and between the second clamp arm (72) and the bracket (1); The two tension springs (73) can respectively apply forces to the first clamp arm (71) and the second clamp arm (72), so that the first clamp arm (71) and the second clamp arm (72) respectively abut against the profile (100).

4. The profile pulling device according to claim 2, characterized in that: The first clamping arm (71) and the second clamping arm (72) are both provided with a roller (74), and the roller (74) is used to abut against the profile (100).

5. The profile pulling device according to claim 1, characterized in that: The adsorption component (4) comprises an elastic supporting film (41) and a one-way valve (42); the elastic supporting film (41) is arranged on the surface of the conveyor belt (3); the elastic supporting film (41) is indented inwardly perpendicular to the surface of the conveyor belt (3) to form an adsorption cavity (411); the one-way valve (42) is arranged at one end of the adsorption cavity (411) close to the conveyor belt (3); the one-way valve (42) is used to allow air to flow in one direction; and the elastic supporting film (41) can be elastically deformed under the action of an external force to squeeze the adsorption cavity (411).

6. The profile pulling device according to claim 5, characterized in that: The adsorption cavity (411) is trumpet-shaped.

7. The profile pulling device according to claim 5, characterized in that: The one-way valve (42) is pressed against the conveyor belt (3) in a direction perpendicular to the surface of the conveyor belt (3). A vent hole is provided on the conveyor belt (3), and the vent hole is arranged opposite to the air outlet of the one-way valve (42).

8. The profile pulling device according to claim 5, characterized in that: The conveyor belt (3) is provided with a mounting groove, the elastic support membrane (41) is arranged in the mounting groove, the elastic support membrane (41) has an adsorption end protruding from the surface of the conveyor belt (3), and the adsorption cavity (411) is recessed on the adsorption end.

9. The profile pulling device according to claim 8, characterized in that: A plurality of the installation through grooves are evenly spaced along the length direction of the conveyor belt (3).

10. The profile pulling device according to claim 1, characterized in that: Two upper rollers (8) are rotatably arranged on the first mounting frame (2), and the axes of the upper rollers (8) are parallel to the axis of the lower roller (6); The profile traction device further comprises a driving member (9), wherein the driving member (9) is arranged on the first mounting frame (2), the driving member (9) is connected to one of the upper roller shafts (8), and the driving member (9) is used to drive the upper roller shaft (8) to rotate, and the conveyor belt (3) is wound around the two upper roller shafts (8) and rollingly cooperates with the two upper roller shafts (8).

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