Infrared heating device for a sheet and stretching equipment comprising the same

Abstract

The present invention discloses an infrared heating device for a sheet and a stretching device including the device. The infrared heating device for the sheet includes a first bracket and a second bracket. A first slide rail is provided on the first bracket, and a second slide rail is provided on the second bracket. A first slider is slidably connected to the first slide rail, and a second slider is slidably connected to the second slide rail. Infrared components are provided on both the first slider and the second slider. A first driving device is provided on the first bracket, and a second driving device is provided on the second bracket. The first driving device drives the first slider to reciprocate along the length direction of the first slide rail, and the second driving device drives the second slider to reciprocate along the length direction of the second slide rail. When the two infrared components are closest to each other, a heating space is formed between the two infrared components. The present invention also provides a stretching device employing the infrared heating device. The present invention provides a heating device and a film stretching device capable of heating a relatively thick film.

Description

Technical Field

[0001] The present invention relates to a heating device, in particular to an infrared heating device for sheets and a stretching device including the device. Background Art

[0002] Before the longitudinal stretching of a thin film, it generally needs to be heated. The traditional way to heat a thin film is generally to use a roller group with a heating function to heat the thin film sheet that bypasses the roller group. However, for thin films with a relatively large thickness such as BOPET sheet films, it is difficult to achieve the requirements for longitudinal stretching by using the traditional heating method for thin films. If forced to stretch, the thin film is easily broken; in order to achieve the purpose of sufficient heating, a roller group with a longer path is generally required, such as using heating roller groups with a larger diameter and a larger number. In this way, it is more wasteful of the space required for processing. If the roller group uses a higher heating power, the thin film is easily damaged. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to solve the above-mentioned problems and provide an infrared heating device for sheets.

[0004] The solution of the present invention to solve its technical problem is:

[0005] An infrared heating device for sheets includes a first bracket and a second bracket. A first slide rail is provided on the first bracket, and a second slide rail is provided on the second bracket. A first slider is slidably connected to the first slide rail, and the second slider is slidably connected to the second slide rail. Infrared components are provided on both the first slider and the second slider. A first driving device is provided on the first bracket, and a second driving device is provided on the second bracket. The first driving device drives the first slider to reciprocate along the length direction of the first slide rail, and the second driving device drives the second slider to reciprocate along the length direction of the second slide rail. When the two infrared components are closest to each other, a heating space is formed between the two infrared components.

[0006] As a further improvement of the above technical solution, each infrared component includes a first lamp holder and a plurality of infrared lamp tubes. All the infrared lamp tubes are fixed on the first lamp holder. One first lamp holder is fixedly arranged on the first slider, and one lamp holder is fixedly arranged on the second slider.

[0007] As a further improvement of the above technical solution, when the two infrared components are closest to each other, the arrangement directions of the infrared lamp tubes in the two infrared components are parallel to each other.

[0008] As a further improvement of the above technical solution, the first driving device includes a first motor, a first screw elevator and a second screw elevator, all of which are fixed on a first bracket. The first screw elevator and the second screw elevator are in transmission connection. The first motor is drivingly connected to the first screw elevator. Two first sliding rails are provided on the first bracket, and a first slider is slidably connected to each first sliding rail. The first screw elevator and the second screw elevator are respectively drivingly connected to a first slider in a one-to-one correspondence to make the two first sliders reciprocate along the length direction of the first sliding rail. An infrared component is provided and fixed between the two first sliders.

[0009] As a further improvement of the above technical solution, the second driving device includes a second motor, a first screw elevator and a second screw elevator, all of which are fixed on the second bracket. The first screw elevator and the second screw elevator are in transmission connection. The second motor is drivingly connected to the first screw elevator. Two second sliding rails are provided on the second bracket, and a second slider is slidably connected to each second sliding rail. The first screw elevator and the second screw elevator are respectively drivingly connected to a second slider in a one-to-one correspondence to make the two second sliders reciprocate along the length direction of the second sliding rail. An infrared component is provided and fixed between the two second sliders.

[0010] The present invention also provides a stretching device, including a frame, an infrared heating device for the sheet material as described above. The first bracket and the second bracket are respectively fixedly connected to the frame. A first stretching roller is provided on the frame, and the first stretching roller is rotatably connected to the frame. An up-and-down movement component is provided on the frame, and the up-and-down movement component is drivingly connected to a second stretching roller. The up-and-down movement component drives the second stretching roller to move up and down. The first stretching roller and the second stretching roller are parallel to each other. A tangent plane is provided between the first stretching roller and the second stretching roller. The first stretching roller and the second stretching roller are tangent to the tangent plane. The tangent plane is arranged in the heating space.

[0011] As a further improvement of the above technical solution, the up-and-down movement component includes a sliding block and an up-and-down air cylinder provided on the frame. The second stretching roller is rotatably connected to the sliding block, and the up-and-down air cylinder drives the second stretching roller to move up and down.

[0012] As a further improvement of the above technical solution, the first driving device includes a first motor, a first screw lifter, and a second screw lifter, all of which are fixed on the first bracket. The first screw lifter and the second screw lifter are in transmission connection. The first motor is drivingly connected to the first screw lifter. Two first slide rails are arranged on the first bracket, and a first slider is slidably connected to each first slide rail. The first screw lifter and the second screw lifter are respectively drivingly connected to a first slider in a one-to-one correspondence to make the two first sliders reciprocate along the length direction of the first slide rail. A first connecting rod extends from each of the two first sliders, and an infrared component is fixed to each of the two first connecting rods.

[0013] As a further improvement of the above technical solution, the second driving device includes a second motor, a first screw lifter, and a second screw lifter, all of which are fixed on the second bracket. The first screw lifter and the second screw lifter are in transmission connection. The second motor is drivingly connected to the first screw lifter. Two second slide rails are arranged on the second bracket, and a second slider is slidably connected to each second slide rail. The first screw lifter and the second screw lifter are respectively drivingly connected to a second slider in a one-to-one correspondence to make the two second sliders reciprocate along the length direction of the second slide rail. A second connecting rod extends from each of the two second sliders, and an infrared component is arranged between the two second connecting rods and the infrared component is fixed to the two second connecting rods.

[0014] The beneficial effects of the present invention are as follows: The first slider can reciprocally slide on the first slide rail on the first bracket, and the second slider can reciprocally slide on the second slide rail on the second bracket. The first driving device drives the first slider to reciprocate on the first slide rail, and the second driving device drives the second slider to reciprocate on the second slide rail, so as to realize the adjustment of the distance between the two infrared components. During use, the sheet film to be heated can pass through the heating space to heat the sheet film. The user can adjust the distances between the two infrared components and the sheet film to be heated according to the actual heating requirements, and heat the sheet film from two directions. The heating efficiency is high, and the heating is convenient and the control of the heating efficiency is convenient. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, not all embodiments. Without creative efforts, those skilled in the art can also obtain other design solutions and drawings based on these drawings.

[0016] Figure 1It is a side schematic view of the second bracket, the second driving device, and the second slider of the present invention;

[0017] Figure 2 It is a front schematic view of the first bracket, the first driving device, and the first slider of the present invention;

[0018] Figure 3 It is a front schematic view of the stretching device of the present invention.

[0019] In the attached drawings: 1 - first bracket, 2 - second bracket, 3 - first slider, 4 - second slider, 5 - first slide rail, 6 - second slide rail, 8 - first lamp holder, 9 - infrared lamp tube, 11 - first motor, 12 - first screw jack, 13 - second screw jack, 14 - first transmission shaft, 15 - second motor, 16 - first screw lift, 17 - second screw lift, 18 - second transmission shaft, 20 - frame, 21 - first stretching roller, 22 - second stretching roller, 24 - upper and lower air cylinders, 25 - first connecting rod, 26 - second connecting rod. Detailed implementation manners

[0020] The following will clearly and completely describe the concept, specific structure, and technical effects generated by the present invention in combination with the embodiments and the attached drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components alone, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be interactively combined without conflicting with each other.

[0021] Refer to Figures 1 to 3 , the infrared heating device for the sheet material, including a first bracket 1 and a second bracket 2. A first slide rail 5 is provided on the first bracket 1, and a second slide rail 6 is provided on the second bracket 2. The first slide rail 5 is slidably connected with a first slider 3, and the second slide rail 6 is slidably connected with the second slider 4. Infrared components are provided on both the first slider 3 and the second slider 4. A first driving device is provided on the first bracket 1, and a second driving device is provided on the second bracket 2. The first driving device drives the first slider 3 to reciprocate along the length direction of the first slide rail 5, and the second driving device drives the second slider 4 to reciprocate along the length direction of the second slide rail 6. When the two infrared components are closest to each other, a heating space is formed between the two infrared components.

[0022] In this embodiment, the first slider 3 can reciprocally slide on the first slide rail 5 on the first bracket 1, and the second slider 4 can reciprocally slide on the second slide rail 6 on the second bracket 2. The first driving device drives the first slider 3 to reciprocate on the first slide rail 5, and the second driving device drives the second slider 4 to reciprocate on the second slide rail 6, so as to adjust the distance between the two infrared components. When in use, the sheet film to be heated can pass through this heating space to achieve heating of the sheet film. The user can adjust the distances between the two infrared components and the sheet film to be heated respectively according to the actual heating requirements, heating the sheet film from two directions, with high heating efficiency, convenient heating, and convenient control of the heating efficiency.

[0023] The above-mentioned actual heating requirements can be the different temperatures required for heating the two surfaces of the sheet film, or can be the different heating efficiencies required for the sheet film, and then adjust the distances between the two infrared components and the sheet film to be heated.

[0024] Preferably, the front and back surfaces of the sheet film face the two infrared components respectively, making the heating effect more thorough.

[0025] Further as a preferred implementation manner, each of the infrared components includes a first lamp holder 8 and a plurality of infrared lamp tubes 9. All the infrared lamp tubes 9 are fixed on the first lamp holder 8. One first lamp holder is fixedly arranged on the first slider, and one lamp holder is fixedly arranged on the second slider. This structure is simple and convenient to set. By setting the first lamp holder 8, a plurality of red lamp tubes can be conveniently fixed and arranged.

[0026] In some embodiments, each infrared component further includes a lamp shade. The lamp shade is fixedly connected to the first lamp holder, or the lamp shade is fixedly connected to the first slider and the second slider one by one. Through the setting of this lamp shade, the light emitted by the infrared lamp tubes 9 can be more concentratedly reflected into the heating space. Preferably, when the two infrared components are closest to each other, the lamp shades on the two infrared components are arranged facing each other, so as to make the light generated by the infrared lamp tubes 9 irradiate towards the heating space as much as possible.

[0027] Further as a preferred implementation manner, when the two infrared components are closest to each other, the arrangement directions of the infrared lamp tubes 9 in the two infrared components are parallel to each other. This structure is simple and convenient to set. When in use, the thin film sheet to be heated is arranged in the heating space. In some embodiments, the plane formed by the arrangement direction of the infrared lamp tubes 9 to be heated is parallel to the thin film sheet to be heated.

[0028] As a further preferred embodiment, the first driving device includes a first motor 11, a first screw lifter 12 and a second screw lifter 13, all of which are fixed on the first bracket 1. The first screw lifter 12 and the second screw lifter 13 are in transmission connection. The first motor 11 is drivingly connected to the first screw lifter 12. Two first slide rails 5 are provided on the first bracket 1. Each first slide rail 5 is slidably connected to a first slider 3. The first screw lifter 12 and the second screw lifter 13 are respectively drivingly connected to a first slider 3 in a one-to-one correspondence to make the two first sliders 3 reciprocate along the length direction of the first slide rail 5. An infrared component is provided and fixed between the two first sliders 3. This structure is simple and convenient to set up. The first motor 11 drives the first screw lifter 12 to move. Since the first screw lifter 12 is in transmission connection with the second screw lifter 13, the first screw lifter and the second screw lifter 13 move synchronously, realizing the synchronous movement of the two first sliders 3 along the length direction of the first slide rail 5 driven by the first motor 11, so that the infrared component connected to the first slider 3 moves along the length direction of the first slide rail 5.

[0029] As a further preferred embodiment, the second driving device includes a second motor 15, a first screw lifter 16 and a second screw lifter 17, all of which are fixed on the second bracket 2. The first screw lifter 16 and the second screw lifter 17 are in transmission connection. The second motor 15 is drivingly connected to the first screw lifter 16. Two second slide rails 6 are provided on the second bracket 2. Each second slide rail 6 is slidably connected to a second slider 4. The first screw lifter 16 and the second screw lifter 17 are respectively drivingly connected to a second slider 4 in a one-to-one correspondence to make the two second sliders 4 reciprocate along the length direction of the second slide rail 6. An infrared component is provided and fixed between the two second sliders 4. The first screw lifter 16 and the second screw lifter 17 are in transmission connection, so that the first screw lifter 16 and the second screw lifter 17 move synchronously. When the second motor 15 on the second bracket 2 drives the first screw lifter 16 to move, the second screw lifter 17 rotates synchronously, and the two second sliders 4 act synchronously and slide respectively along the length direction of the second slider 4, realizing the movement of driving the infrared component along the length direction of the second slide rail 6.

[0030] The present invention also provides a stretching device, including a frame 20, an infrared heating device for the sheet as described above, the first bracket 1 and the second bracket 2 are respectively fixedly connected to the frame 20, a first stretching roller 21 is provided on the frame 20, the first stretching roller 21 is rotatably connected to the frame 20, a vertical movement component is provided on the frame 20, the vertical movement component is drivingly connected to a second stretching roller 22, the vertical movement component drives the second stretching roller 22 to move up and down, the first stretching roller 21 and the second stretching roller 22 are parallel to each other, a tangent plane is provided between the first stretching roller 21 and the second stretching roller 22, the first stretching roller 21 and the second stretching roller 22 are tangent to the tangent plane, and the tangent plane is arranged in the heating space. This structure is simple and convenient to set up. Through the setting of this structure, the infrared heating device can be effectively used to heat the sheet between the first stretching roller 21 and the second stretching roller 22.

[0031] Further as a preferred embodiment, the vertical movement component includes a sliding block and a vertical air cylinder 24 provided on the frame 20. The second stretching roller 22 is rotatably connected to the sliding block, and the vertical air cylinder 24 drives the second stretching roller 22 to move up and down. This structure is simple and convenient to set up. During use, the vertical air cylinder 24 drives the sliding block to slide up and down, so as to adjust the distance between the second stretching roller 22 and the second stretching roller 22. The user can use this structure to longitudinally stretch the sheet. Longitudinal stretching means stretching the sheet along the winding direction of the rolled film.

[0032] As a further preferred embodiment, the first driving device includes a first motor 11, a first screw elevator 12, and a second screw elevator 13, all of which are fixed on the first bracket 1. The first screw elevator 12 and the second screw elevator 13 are in transmission connection. The first motor 11 is drivingly connected to the first screw elevator 12. Two first slide rails 5 are provided on the first bracket 1. Each first slide rail 5 is slidably connected to a first slider 3. The first screw elevator 12 and the second screw elevator 13 are respectively drivingly connected to a first slider 3 in a one-to-one correspondence to make the two first sliders 3 reciprocate along the length direction of the first slide rail 5. Each of the two first sliders 3 extends with a first connecting rod 25, and an infrared component is fixed to each of the two first connecting rods 25. This structure is simple and convenient to set up. During use, the first motor 11 drives the first screw elevator 12 to rotate. The first screw elevator 12 is in transmission connection with the second screw elevator 13, so that the first screw elevator 12 and the second screw elevator 13 rotate synchronously. Driven by the first screw elevator 12 and the second screw elevator 13, the two first sliders 3 slide along the length direction of the first slide rail 5. A first connecting rod 25 is connected to each of the two sliders, and an infrared component is arranged and fixed between the two first connecting rods 25. The infrared component is fixedly connected to the two first connecting rods 25, so as to drive the infrared component to slide during the movement of the two sliders. Through the arrangement of the first connecting rod 25, the user can make the second driving device farther away from the first stretching roller 21 and the second stretching roller 22 according to the actual situation, avoiding interference between the second driving device and the first stretching roller 21, the second stretching roller 22, or the sheet material on the first stretching roller 21 and the second stretching roller 22. In this embodiment, the first connecting rod 25 is adopted. The first connecting rod 25 occupies less space and is not easily interfered with by other components. In addition, in some embodiments, the first connecting rod 25 can be a bent first connecting rod 25 according to the actual situation, such as factors such as the positional relationship between the first stretching roller 21 and the second stretching roller 22, and the shape and structure of the frame 20.

[0033] As a further preferred embodiment, the second driving device includes a second motor 15, a first screw jack 16 and a second screw jack 17, all of which are fixed on the second bracket 2. The first screw jack 16 and the second screw jack 17 are in transmission connection. The second motor 15 is drivingly connected to the first screw jack 16. Two second slide rails 6 are arranged on the second bracket 2. Each second slide rail 6 is slidably connected with a second slider 4. The first screw jack 16 and the second screw jack 17 are respectively drivingly connected to a second slider 4 in a one-to-one correspondence, so that the two second sliders 4 reciprocate along the length direction of the second slide rail 6. A second connecting rod 26 extends from each of the two second sliders 4. An infrared component is arranged between the two second connecting rods 26, and the infrared component is fixed to the two second connecting rods 26. This structure is simple and convenient to set up. During use, the second motor 15 drives the first screw jack 16 to rotate. The first screw jack 16 is in transmission connection with the second screw jack 17, so that the first screw jack 16 and the second screw jack 17 rotate synchronously. Driven by the first screw jack 16 and the second screw jack 17, the two second sliders 4 slide along the length direction of the second slide rail 6. A second connecting rod 26 is connected to each of the two sliders. An infrared component is arranged and fixed between the two second connecting rods 26. The infrared component is fixedly connected to the two second connecting rods 26, so that the infrared component is driven to slide during the movement of the two sliders. Through the arrangement of the second connecting rod 26, the user can make the second driving device farther away from the first stretching roller 21 and the second stretching roller 22 according to the actual situation, avoiding interference between the second driving device and the first stretching roller 21, the second stretching roller 22 or the sheet on the first stretching roller 21 and the second stretching roller 22. In this embodiment, the second connecting rod 26 is adopted. The second connecting rod 26 occupies less space and is not easy to interfere with other components. In addition, in some embodiments, the second connecting rod 26 can be a bent second connecting rod 26 according to the actual situation, such as factors such as the positional relationship between the first stretching roller 21 and the second stretching roller 22, and the shape structure of the frame 20.

[0034] In some embodiments, the first screw jack 16, the second screw jack 17, the first screw lifter 12 and the second screw lifter 13 can all be JWB ball screw jacks; or the first screw jack 16, the second screw jack 17, the first screw lifter 12 and the second screw lifter 13 are all SWL screw jacks.

[0035] In certain embodiments, the first driving device and the second driving device are symmetrically arranged about the center points of the first stretching roller 21 and the second stretching roller 22.

[0036] In some embodiments, the first screw lift 16 and the second screw lift 17 are connected in transmission via the first transmission shaft 14 , and the first screw lift 16 and the second screw lift 17 are arranged in a mirror image of each other.

[0037] In some embodiments, the first screw lifter 12 and the second screw lifter 13 are connected to each other through a second transmission shaft 18, and the first screw lifter 12 and the second screw lifter 13 are arranged in a mirror image to each other.

[0038] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A stretching device, including an infrared heating device for a sheet, characterized in that: The infrared heating device includes a first bracket (1) and a second bracket (2). A first slide rail (5) is provided on the first bracket (1), and a second slide rail (6) is provided on the second bracket (2). A first slider (3) is slidably connected to the first slide rail (5), and a second slider (4) is slidably connected to the second slide rail (6). Infrared components are provided on both the first slider (3) and the second slider (4); A first driving device is provided on the first bracket (1), and a second driving device is provided on the second bracket (2). The first driving device drives the first slider (3) to reciprocate along the length direction of the first slide rail (5), and the second driving device drives the second slider (4) to reciprocate along the length direction of the second slide rail (6). When the two infrared components are closest to each other, a heating space is formed between the two infrared components; The first driving device includes a first motor (11), a first screw lifter (12), and a second screw lifter (13), all of which are fixed on the first bracket (1). The first screw lifter (12) and the second screw lifter (13) are in transmission connection. The first motor (11) is drivingly connected to the first screw lifter (12). Two first slide rails (5) are provided on the first bracket (1), and one first slider (3) is slidably connected to each first slide rail (5). The first screw lifter (12) and the second screw lifter (13) are respectively drivingly connected to one first slider (3) in a one-to-one correspondence to make the two first sliders (3) reciprocate along the length direction of the first slide rail (5). An infrared component is provided and fixed between the two first sliders (3); The second driving device includes a second motor (15), a first screw lifter (16), and a second screw lifter (17), all of which are fixed on the second bracket (2). The first screw lifter (16) and the second screw lifter (17) are in transmission connection. The second motor (15) is drivingly connected to the first screw lifter (16). Two second slide rails (6) are provided on the second bracket (2), and one second slider (4) is slidably connected to each second slide rail (6). The first screw lifter (16) and the second screw lifter (17) are respectively drivingly connected to one second slider (4) in a one-to-one correspondence to make the two second sliders (4) reciprocate along the length direction of the second slide rail (6). An infrared component is provided and fixed between the two second sliders (4); It further includes a frame (20), the first bracket (1) and the second bracket (2) are respectively fixedly connected to the frame (20), a first stretching roller (21) is provided on the frame (20), the first stretching roller (21) is rotatably connected to the frame (20), an up-and-down movement component is provided on the frame (20), the up-and-down movement component is drivingly connected to a second stretching roller (22), and the up-and-down movement component drives the second stretching roller (22) to move up and down; The first stretching roller (21) and the second stretching roller (22) are parallel to each other, there is a tangent plane between the first stretching roller (21) and the second stretching roller (22), the first stretching roller (21) and the second stretching roller (22) are tangent to the tangent plane, and the tangent plane is arranged in the heating space.

2. The stretching device according to claim 1, characterized in that, Each of the infrared components includes a first lamp holder (8) and a plurality of infrared lamp tubes (9), all the infrared lamp tubes (9) are fixed on the first lamp holder (8), a first lamp holder is fixedly arranged on the first slider, and a lamp holder is fixedly arranged on the second slider.

3. The stretching device according to claim 1, characterized in that, When the two infrared components are closest to each other, the arrangement directions of the infrared lamp tubes (9) in the two infrared components are parallel to each other.

4. The stretching device according to claim 1, characterized in that, The up-and-down movement component includes a sliding block and an up-and-down air cylinder (24) provided on the frame (20), the second stretching roller (22) is rotatably connected to the sliding block, and the up-and-down air cylinder (24) drives the sliding block to move up and down.

5. The stretching device according to claim 1, wherein, The first driving device includes a first motor (11), a first screw rod lifter (12) and a second screw rod lifter (13) all fixed on the first bracket (1), the first screw rod lifter (12) and the second screw rod lifter (13) are in transmission connection, the first motor (11) is drivingly connected to the first screw rod lifter (12), two first slide rails (5) are arranged on the first bracket (1), each first slide rail (5) is slidably connected with a first slider (3), the first screw rod lifter (12) and the second screw rod lifter (13) are respectively drivingly connected to a first slider (3) in a one-to-one correspondence to make the two first sliders (3) reciprocate along the length direction of the first slide rail (5), a first connecting rod (25) extends from each of the two first sliders (3), and an infrared component is fixed to each of the two first connecting rods (25).

6. The stretching device according to claim 1, characterized in that, The second driving device includes a second motor (15), a first screw jack (16) and a second screw jack (17) all fixed on the second bracket (2). The first screw jack (16) and the second screw jack (17) are in transmission connection. The second motor (15) is drivingly connected to the first screw jack (16). Two second slide rails (6) are arranged on the second bracket (2). Each second slide rail (6) is slidably connected with a second slider (4). The first screw jack (16) and the second screw jack (17) are respectively drivingly connected to a second slider (4) in a one-to-one correspondence manner, so that the two second sliders (4) reciprocate along the length direction of the second slide rail (6). A second connecting rod (26) extends from each of the two second sliders (4). An infrared component is arranged between the two second connecting rods (26), and the infrared component is fixed to the two second connecting rods (26).

Images