Thermal spraying wire unwinding device

Abstract

The utility model discloses a kind of thermal spraying wire material unwinding devices, including bottom plate, reel, speed reducer motor and rotary damper, the output shaft of speed reducer motor is installed plate and is installed with driving wheel, driving wheel is provided with press wheel directly above, installed plate is installed with the longitudinally-through expansion shaft assembly, reel is clamped with expansion shaft assembly and is installed, expansion shaft assembly includes shaft and disc, disc is uniformly equipped with three sliding grooves a extending from circumferential surface radially to inside, sliding groove a is slidably connected with the axially protruding bracing arm, the side of bracing arm is equipped with inclined slot, shaft is equipped with the push sleeve that can axially slide, push sleeve outside is uniformly equipped with three ear seats, pin is screwed on ear seat, the front end of pin is inserted into inclined slot, the front end of shaft is screwed with locating nut, spring b is arranged between locating nut and push sleeve. Without gas distribution equipment, simplify structure, use flexible and convenient, reel pushes into expansion shaft assembly can be realized clamping installation, convenient and fast operation.

Description

Technical Field

[0001] This utility model relates to the field of thermal spraying technology, specifically to a thermal spraying filament unwinding device. Background Technology

[0002] Thermal spraying technology is a process that uses a heat source to heat the coating material to a molten or semi-molten state, and then atomizes it through a high-speed airflow before spraying it onto the substrate surface to form a coating. By preparing a functional coating on the substrate surface, it endows the material with properties such as corrosion resistance, wear resistance, high temperature resistance, and insulation. Some thermal spraying processes use filaments as the raw material for melting. The operation process uses an unwinding device to release the filaments. Existing unwinding devices generally use air shafts to clamp the winding spools for quick replacement after the filaments are used up. However, air shafts are not only expensive, but also require air distribution equipment during use, which can be limiting in some operating environments. Utility Model Content

[0003] The purpose of this invention is to provide a thermal spraying filament unwinding device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a thermal spraying filament unwinding device, comprising a base plate, a winding reel, a reduction motor, and a rotation damper. A vertical mounting plate is fixed to the upper surface of the base plate. The reduction motor is fixedly mounted on the back of the mounting plate. The output shaft of the reduction motor passes through the mounting plate and is fitted with a drive wheel. A pressure wheel is positioned directly above the drive wheel. A longitudinally penetrating tension shaft assembly is mounted on the mounting plate. The winding reel is engaged with the tension shaft assembly. The tension shaft assembly includes a rotating shaft and a disc. The disc is concentrically fixed on the rotating shaft. The disc is evenly provided with three grooves a extending radially inward from the circumference. An axially extending support arm is slidably connected in the groove a. The side of the support arm is provided with an inclined groove. The rotating shaft is provided with an axially sliding push sleeve. Three lugs are evenly provided on the outer side of the push sleeve along the circumference. A pin is screwed onto the lug. The front end of the pin abuts into the inclined groove. A positioning nut is screwed onto the front end of the rotating shaft. A spring b is provided between the positioning nut and the push sleeve. The tail end of the rotating shaft is connected to a rotation damper.

[0005] Preferably, a vertical guide rail is fixedly installed on the front side of the mounting plate, and a matching slider is slidably connected in the guide rail. The pressure wheel is installed on the slider, and end caps are fixedly installed at both ends of the guide rail. A spring a is connected between the slider and the upper end cap, and the spring a applies a downward thrust to the slider.

[0006] Preferably, the front end of the support arm has an inwardly bent section with a bending angle of less than 45°.

[0007] Preferably, the outer side of the rotating shaft is provided with at least two sets of sliding grooves b, and the inner side of the push sleeve is provided with a protrusion that engages with the sliding grooves b.

[0008] Compared with the prior art, the beneficial effects of this utility model are: the tensioning shaft assembly of this utility model is opened by the elastic force of spring b, which does not require air distribution equipment, simplifies the structure, and is flexible and convenient to use. The winding reel can be pushed into the tensioning shaft assembly to achieve clamping and installation, and the operation is convenient and quick. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0010] Figure 2 This is a top view of the structure of this utility model;

[0011] Figure 3 This is a three-dimensional structural diagram of the tensioning shaft assembly.

[0012] In the diagram: 1. Base plate; 2. Mounting plate; 3. Drive wheel; 4. Guide rail; 5. Slider; 6. Pressure wheel; 7. Spring a; 8. Winding reel; 9. Tensioning shaft assembly; 91. Rotating shaft; 92. Disc; 93. Support arm; 94. Push sleeve; 95. Spring b; 96. Positioning nut; 97. Inclined groove; 98. Slide groove b; 99. Slide groove a; 10. Gear motor; 11. Rotary damper. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Please see Figure 1-3 This utility model provides a technical solution: a thermal spraying filament unwinding device, including a base plate 1, a winding reel 8, a reduction motor 10, and a rotation damper 11 (existing technology, such as Chinese utility model patent with publication number CN212360617U). A vertical mounting plate 2 is fixed on the upper surface of the base plate 1. The reduction motor 10 is fixedly mounted on the back of the mounting plate 2. The output shaft of the reduction motor 10 passes through the mounting plate 2 and is mounted on a drive wheel 3. A pressure wheel 6 is provided directly above the drive wheel 3. A vertical guide rail 4 is fixedly mounted on the front side of the mounting plate 2. A matching slider 5 is slidably connected in the guide rail 4. The pressure wheel 6 is mounted on the slider 5. End caps are fixedly mounted at both ends of the guide rail 4. A spring a7 is connected between the slider 5 and the upper end cap. The spring a7 applies a downward pushing force to the slider 5. Annular grooves are provided on the outer sides of both the drive wheel 3 and the pressure wheel 6. In order to increase the driving friction, rubber can be filled at the bottom of the annular groove of the drive wheel 3. During unwinding, the filament passes between the pressure wheel 6 and the drive wheel 3.

[0015] Mounting plate 2 is equipped with a longitudinally penetrating tensioning shaft assembly 9. The winding reel 8 is snapped into the tensioning shaft assembly 9. The tensioning shaft assembly 9 includes a rotating shaft 91 and a disc 92. The disc 92 is concentrically fixed on the rotating shaft 91. The disc 92 is evenly provided with three grooves a99 extending radially inward from the circumference. An axially extending support arm 93 is slidably connected in the groove a99. The front end of the support arm 93 is provided with an inward bending section with a bending angle of less than 45°. The purpose of setting the bending section is to form a cone tip at the front, which facilitates the pushing of the winding reel 8.

[0016] The side of the tensioning arm 93 is provided with a sloping groove 97. The rotating shaft 91 is provided with an axially sliding push sleeve 94. The outer side of the rotating shaft 91 is provided with at least two sets of sliding grooves b98. The inner side of the push sleeve 94 is provided with a protrusion that engages with the sliding groove b98. Three lugs are evenly provided around the circumference of the outer side of the push sleeve 94. A pin is screwed onto the lug, and the front end of the pin abuts against the sloping groove 97. When the push sleeve 94 moves backward, it pushes the tensioning arm 93 to move radially outward to achieve expansion and tightening with the hole. A positioning nut 96 is screwed onto the front end of the rotating shaft 91. A spring b95 is provided between the positioning nut 96 and the push sleeve 94. The spring b95 is in a compressed state and applies a thrust to the push sleeve 94. The tail end of the rotating shaft 91 is connected to the rotation damper 11 through a gear pair. The winding reel 8 has a certain resistance when rotating to prevent the winding reel 8 from releasing too much wire due to inertial rotation.

[0017] Working principle: During use, the winding reel 8 containing the wound filament is pushed into the front end of the tensioning shaft assembly 9. The front ends of the three tensioning arms 93 form a cone tip to guide the winding reel 8 into place. The spring b95 applies a backward thrust to the push sleeve 94, and the tensioning arms 93 are pushed radially outward to achieve tension with the winding reel 8. During unwinding, the reduction motor 10 drives the drive wheel 3 to rotate, and the frictional force pulls the filament out and sends it to the nozzle.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermal spraying filament unwinding device, comprising a base plate (1), a winding reel (8), a geared motor (10), and a rotation damper (11), wherein a vertical mounting plate (2) is fixedly mounted on the upper surface of the base plate (1), the geared motor (10) is fixedly mounted on the back of the mounting plate (2), and the output shaft of the geared motor (10) passes through the mounting plate (2) and is mounted with a drive wheel (3), characterized in that: A pressure wheel (6) is provided directly above the drive wheel (3). A longitudinally penetrating tension shaft assembly (9) is installed on the mounting plate (2). The winding reel (8) is snapped into the tension shaft assembly (9). The tension shaft assembly (9) includes a rotating shaft (91) and a disc (92). The disc (92) is concentrically fixed on the rotating shaft (91). The disc (92) is evenly provided with three sliding grooves a (99) extending radially inward from the circumference. An axially extending tension arm is slidably connected in the sliding groove a (99). (93) The side of the support arm (93) is provided with a sloping groove (97). The rotating shaft (91) is provided with a push sleeve (94) that can slide axially. Three ear seats are evenly provided on the outer side of the push sleeve (94) along the circumference. A pin is screwed onto the ear seat. The front end of the pin abuts into the sloping groove (97). A positioning nut (96) is screwed onto the front end of the rotating shaft (91). A spring b (95) is provided between the positioning nut (96) and the push sleeve (94). The tail end of the rotating shaft (91) is connected to the rotation damper (11).

2. The thermal spraying filament unwinding device according to claim 1, characterized in that: A vertical guide rail (4) is fixedly installed on the front side of the mounting plate (2). A matching slider (5) is slidably connected in the guide rail (4). The pressure wheel (6) is installed on the slider (5). End caps are fixedly installed at both ends of the guide rail (4). A spring a (7) is connected between the slider (5) and the upper end cap. The spring a (7) applies a downward thrust to the slider (5).

3. The thermal spraying filament unwinding device according to claim 1, characterized in that: The front end of the support arm (93) is provided with an inward bending section and the bending angle is less than 45°.

4. The thermal spraying filament unwinding device according to claim 1, characterized in that: The outer side of the rotating shaft (91) is provided with at least two sets of sliding grooves b (98), and the inner side of the push sleeve (94) is provided with a protrusion that engages with the sliding grooves b (98).

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