Coating film tensioning device

Abstract

The utility model discloses a coating film tensioning device. The coating film tensioning device comprises a mounting seat, a rotating body, a first tensioning frame, a second tensioning frame, a pawl, an elastic component and an elastic reset element, the rotating body comprises a wheel shaft, a gear and a ratchet wheel; the wheel shaft is rotatably mounted on the mounting seat; the gear and the ratchet wheel are fixed on the wheel shaft; the elastic reset element is arranged between the rotating body and the mounting seat; the first tensioning frame is hinged to the mounting seat and is meshed with the gear; the second tensioning frame is hinged to the mounting base, and the second tensioning frame is meshed with the first tensioning frame; the pawl is hinged to the mounting seat, and the elastic component is arranged between the pawl and the mounting seat; the pawl is used for being buckled into a tooth groove of the ratchet wheel. According to the utility model, the tightness adjustment operation is more convenient and rapid, the tightness adjustment time can be saved, and the adjustment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of coating film tensioning device. BACKGROUND

[0002] In the 3D printing process, generally need to be first loaded on the printing material on coating film, then printing material is coated on printing platform by coating film. But in the coating film working process, in order to ensure coating effect, coating film is tightened by coating film tensioning device, if coating film needs to be replaced, coating film can be disassembled by coating film tensioning device loosening. But the existing coating film tensioning device is more cumbersome, inconvenient to adjust the tightness, thereby causing lower adjustment efficiency, far from meeting industry requirements. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a kind of coating film tensioning device, which is more convenient and fast to adjust the tightness, can save the time of adjusting the tightness, and improve the adjustment efficiency.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A kind of coating film tensioning device, including mounting seat, rotating body, first tensioning frame, second tensioning frame, pawl, elastic component and elastic reset element;The rotating body includes wheel shaft, gear and ratchet wheel;The wheel shaft is rotatably mounted on mounting seat;The gear and ratchet wheel are all fixed on wheel shaft;The elastic reset element is arranged between rotating body and mounting seat;The first tensioning frame is hinged on mounting seat, and engaged with gear;The second tensioning frame is hinged on mounting seat, and the second tensioning frame is engaged with the first tensioning frame;The pawl is hinged on mounting seat, and the elastic component is arranged between pawl and mounting seat;The pawl is used to buckle into the tooth groove of ratchet wheel.

[0006] The elastic component includes spring, and the spring is used to provide the elastic force for promoting the pawl to buckle into the tooth groove of ratchet wheel.

[0007] The elastic reset element includes coil spring.

[0008] One end of the coil spring is connected with the wheel shaft, and the other end is connected with the mounting seat.

[0009] Mounting cavity is arranged on the mounting seat, and the coil spring is located in the mounting cavity.

[0010] The first tensioning frame includes first toothed plate and first tensioning roller;The first toothed plate is hinged on mounting seat, and the first tensioning roller is rotatably mounted on the first toothed plate;First tooth pattern is arranged on the first toothed plate, and the first toothed plate is engaged with gear.

[0011] The second tensioning frame comprises a second toothed plate and a second tensioning roller; the second toothed plate is hinged on the mounting seat, and the second tensioning roller is rotatably mounted on the second toothed plate; the second toothed plate is provided with a second tooth trace, and the second toothed plate is engaged with the first toothed plate.

[0012] The two ends of the wheel shaft are fixed with gears; the first tensioning frame comprises two first toothed plates; the first tensioning roller is rotatably mounted on the two first toothed plates; the two first toothed plates correspond to the gears at the two ends of the wheel shaft respectively, and each first toothed plate is engaged with the corresponding gear.

[0013] The second tensioning frame comprises two second toothed plates; the second tensioning roller is rotatably mounted on the two second toothed plates; the two second toothed plates correspond to the two first toothed plates respectively, and each first toothed plate is engaged with the corresponding second toothed plate.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The coating film tensioning device provided by the present application combines the mounting seat, the rotating body, the first tensioning frame, the second tensioning frame, the pawl, the elastic component and the elastic reset element, so that the tension adjustment operation is convenient and fast, the tension adjustment time can be saved, the adjustment efficiency is improved, and the device is convenient to install and can effectively control the cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 Fig. 1 is a structural schematic view of the present application;

[0017] Fig. 2 Fig. 2 is a schematic view of the disassembled state of the present application;

[0018] Fig. 3 Fig. 3 is another schematic view of the disassembled state of the present application;

[0019] 110, mounting seat; 120, rotating body; 121, wheel shaft; 122, gear; 123, ratchet; 130, first tensioning frame; 131, first toothed plate; 132, first tensioning roller; 133, first tooth trace; 140, second tensioning frame; 141, second toothed plate; 142, second tensioning roller; 143, second tooth trace; 151, pawl; 160, elastic reset element. DETAILED DESCRIPTION

[0020] In the following, the present application will be further described in combination with the drawings and the specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0021] For example, Figs. 1-3As shown in the drawings, the coating film tensioning device comprises a mounting base 110, a rotating body 120, a first tensioning frame 130, a second tensioning frame 140, a pawl 151, an elastic component and an elastic reset element 160; the rotating body 120 comprises an axle 121, a gear 122 and a ratchet wheel 123; the axle 121 is rotatably mounted on the mounting base 110; the gear 122 and the ratchet wheel 123 are both fixed on the axle 121; the elastic reset element 160 is arranged between the rotating body 120 and the mounting base 110; the first tensioning frame 130 is hinged on the mounting base 110 and engaged with the gear 122; the second tensioning frame 140 is hinged on the mounting base 110 and engaged with the first tensioning frame 130; the pawl 151 is hinged on the mounting base 110 and the elastic component is arranged between the pawl 151 and the mounting base 110; the pawl 151 is used to be buckled into the tooth groove of the ratchet wheel 123.

[0022] In use, the coating film is wound on the first tensioning frame 130 and the second tensioning frame 140, and the axle 121 is rotated forward by manual operation or by external power device, the ratchet wheel 123 and the gear 122 rotate forward with the axle 121, the first tensioning frame 130 swings under the driving action of the gear 122, the second tensioning frame 140 swings under the driving action of the first tensioning frame 130, and after the axle 121 is rotated to the position, the pawl 151 is buckled into the tooth groove of the ratchet wheel 123, thereby achieving the locking effect, so that the first tensioning frame 130 and the second tensioning frame 140 are kept in the corresponding positions, and the pawl 151 is separated from the ratchet wheel 123 by pulling the pawl 151, at this time, the axle 121 is elastically reset under the elastic force of the elastic reset element 160, the first tensioning frame 130 rotates for reset under the driving action of the gear 122, and the second tensioning frame 140 rotates for reset under the driving action of the first tensioning frame 130, thus the positions of the first tensioning frame 130 and the second tensioning frame 140 can be conveniently and quickly adjusted, so that the tightness adjustment operation can be completed by adjusting the positions of the first tensioning frame 130 and the second tensioning frame 140, the coating film wound on the first tensioning frame 130 and the second tensioning frame 140 can be adjusted to be loose or tight, the tightness adjustment operation is more convenient and quick, the tightness adjustment time is saved, and the adjustment efficiency is improved.

[0023] The elastic component comprises a spring, which is used to provide the elastic force for buckling the pawl 151 into the tooth groove of the ratchet wheel 123, so that after the pawl 151 is separated from the ratchet wheel 123 by the user pulling the pawl 151 and the axle 121 is elastically reset under the elastic force of the elastic reset element 160, the pawl 151 can be reset to be buckled into the tooth groove of the ratchet wheel 123 under the elastic force of the spring by releasing the pawl 151, thereby further improving the convenience of operation.

[0024] Of course, the elastic component can be any elastic component on the market in addition to the spring, such as an elastic strip, etc.

[0025] The elastic reset component 160 comprises a coil spring. One end of the coil spring is connected with the wheel shaft 121, and the other end is connected with the mounting base 110, so that the wheel shaft 121 can be elastically reset under the elastic force of the coil spring after the pawl 151 is separated from the ratchet wheel 123 by the user pulling the pawl 151. By using the coil spring as the elastic reset component 160, the elastic force can be provided to the wheel shaft 121, and the installation is facilitated.

[0026] The mounting base 110 is provided with a mounting cavity, and the coil spring is located in the mounting cavity, so that the installation of the coil spring is facilitated, and the coil spring is prevented from being exposed.

[0027] Preferably, the wheel shaft 121 is provided with a first embedding groove, the mounting base 110 is provided with a second embedding groove, the inner side end of the coil spring is fixed in the first embedding groove, and the outer side end of the coil spring is fixed in the second embedding groove, so that the installation is facilitated.

[0028] Of course, in addition to the coil spring, the elastic reset component 160 can be any elastic reset component on the market, such as a torsion spring, etc., as long as the elastic reset function can be achieved.

[0029] Preferably, the first tensioning frame 130 comprises a first toothed plate 131 and a first tensioning roller 132; the first toothed plate 131 is hinged on the mounting base 110, and the first tensioning roller 132 is rotatably mounted on the first toothed plate 131; the first toothed plate 131 is provided with a first toothed pattern 133, and the first toothed plate 131 is engaged with the gear 122. The second tensioning frame 140 comprises a second toothed plate 141 and a second tensioning roller 142; the second toothed plate 141 is hinged on the mounting base 110, and the second tensioning roller 142 is rotatably mounted on the second toothed plate 141; the second toothed plate 141 is provided with a second toothed pattern 143, and the second toothed plate 141 is engaged with the first toothed plate 131. In use, the coating film is wound around the first tensioning roller 132 and the second tensioning roller 142, and in the process of transmission of the coating film, the first tensioning roller 132 and the second tensioning roller 142 can respectively rotate relative to the first toothed plate 131 and the second toothed plate 141 under the driving action of the coating film, so as to reduce the friction. In the process of rotation of the wheel shaft 121, the ratchet wheel 123 and the gear 122 rotate with the wheel shaft 121, the first toothed plate 131 of the first tensioning frame 130 swings under the driving action of the gear 122, at this time, the first tensioning roller 132 swings around the hinge point of the first toothed plate 131 with the first toothed plate 131, the second toothed plate 141 of the second tensioning frame 140 swings under the driving action of the first tensioning frame 130, and the second tensioning roller 142 swings around the hinge point of the second toothed plate 141 with the second toothed plate 141, so as to realize the tension adjustment through the adjustment of the positions of the first tensioning roller 132 and the second tensioning roller 142.

[0030] In the present embodiment, the first toothed plate 131 is hinged on the mounting base 110 through a first pin shaft, the first toothed plate 131 is provided with a first through hole, the mounting base 110 is provided with a first mounting hole, the first pin shaft is mounted in the first mounting hole and passes through the first through hole, so as to realize the hinging of the first toothed plate 131 on the mounting base 110 in the above-mentioned manner, so that the first toothed plate 131 can swing around the central axis of the first pin shaft. The second toothed plate 141 is hinged on the mounting base 110 through a second pin shaft, the second toothed plate 141 is provided with a second through hole, the mounting base 110 is provided with a second mounting hole, the second pin shaft is mounted in the second mounting hole and passes through the second through hole, so as to realize the hinging of the second toothed plate 141 on the mounting base 110 in the above-mentioned manner, so that the second toothed plate 141 can swing around the central axis of the second pin shaft.

[0031] Of course, in addition to the above, the first toothed plate 131 and the second toothed plate 141 can also be hinged on the mounting base 110 through other existing structures.

[0032] The two ends of the wheel shaft 121 are fixed with gears 122; the first tensioning frame 130 comprises two first toothed plates 131; the first tensioning roller 132 is rotatably installed on the two first toothed plates 131; the two first toothed plates 131 correspond to the gears 122 at the two ends of the wheel shaft 121 respectively, and each first toothed plate 131 is engaged with the corresponding gear 122. The second tensioning frame 140 comprises two second toothed plates 141; the second tensioning roller 142 is rotatably installed on the two second toothed plates 141; the two second toothed plates 141 correspond to the two first toothed plates 131 respectively, and each first toothed plate 131 is engaged with the corresponding second toothed plate 141. By using the above arrangement, the stability of the rotation of the first tensioning frame 130 and the second tensioning frame 140 can be improved.

[0033] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A coating film tensioning device characterized by: The device comprises a mounting base, a rotating body, a first tensioning frame, a second tensioning frame, a pawl, an elastic component and an elastic return element; the rotating body comprises an axle, a gear and a ratchet; the axle is rotatably mounted on the mounting base; the gear and the ratchet are both fixed on the axle; the elastic return element is arranged between the rotating body and the mounting base; the first tensioning frame is hinged on the mounting base and engaged with the gear; the second tensioning frame is hinged on the mounting base and engaged with the first tensioning frame; the pawl is hinged on the mounting base, and the elastic component is arranged between the pawl and the mounting base; the pawl is used to be buckled into the tooth groove of the ratchet.

2. The coating film tensioner according to claim 1, wherein: The elastic component comprises a spring, which is used to provide an elastic force to make the pawl buckle into the tooth groove of the ratchet.

3. The coating film tensioner according to claim 1, wherein: The elastic return element comprises a coil spring.

4. The coating film tensioner according to claim 3, wherein: One end of the coil spring is connected with the axle, and the other end is connected with the mounting base.

5. The coating film tension device according to claim 3 or 4, wherein: The mounting base is provided with a mounting cavity, and the coil spring is located in the mounting cavity.

6. The coating film tensioner according to claim 1, wherein: The first tensioning frame comprises a first toothed plate and a first tensioning roller; the first toothed plate is hinged on the mounting base, and the first tensioning roller is rotatably mounted on the first toothed plate; the first toothed plate is provided with a first tooth pattern, and the first toothed plate is engaged with the gear.

7. The coating film tensioner according to claim 6, wherein: The second tensioning frame comprises a second toothed plate and a second tensioning roller; the second toothed plate is hinged on the mounting base, and the second tensioning roller is rotatably mounted on the second toothed plate; the second toothed plate is provided with a second tooth pattern, and the second toothed plate is engaged with the first toothed plate.

8. The coating film tensioner according to claim 7, wherein: Both ends of the axle are fixed with a gear; the first tensioning frame comprises two first toothed plates; the first tensioning roller is rotatably mounted on the two first toothed plates; the two first toothed plates correspond to the gears at both ends of the axle respectively, and each first toothed plate is engaged with the corresponding gear.

9. The coating film tensioner of claim 8, wherein: The second tensioning frame comprises two second toothed plates; the second tensioning roller is rotatably mounted on the two second toothed plates; the two second toothed plates correspond to the two first toothed plates respectively, and each first toothed plate is engaged with the corresponding second toothed plate.

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