Automatic hot wax coating device for enameled wire

Abstract

The invention discloses an enamelled wire hot wax automatic coating device, and particularly relates to the technical field of enamelled wire coating equipment, the enamelled wire hot wax automatic coating device comprises a workbench, a bobbin placing rack is arranged on one side of the upper end of the workbench, and bobbin placing mechanisms are arranged on the sides, away from the bobbin placing rack, of the outer surfaces of two first mounting racks; the waxing device comprises a workbench, first mounting frames are arranged on the two sides of the upper end of the workbench, limiting rollers are arranged on the two sides of the upper ends of the two first mounting frames, a hot wax flow guide mechanism is arranged in the middle of the outer surfaces of the two first mounting frames, and a waxing device fixedly mounted at the upper end of the workbench is arranged below the hot wax flow guide mechanism. According to the automatic hot wax coating device for the enamelled wire, the excess material collecting mechanism is arranged, in the process that the enamelled wire is coated by the coating mechanism, the excess material collecting mechanism can clean redundant hot wax, and the phenomenon that the hot wax coated on the surface of the enamelled wire is not uniform is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of enameled wire coating equipment, in particular to an automatic hot wax coating device for enameled wire. Background Art

[0002] Enameled wire consists of a conductor and an insulating layer. It's commonly used as winding wire in common motors, electrical appliances, instruments, transformers, and other workplaces, with silver-plated copper enameled wire being the most common type used in everyday life. During winding, paraffin wax is applied to the wire to reduce its friction coefficient, so it's used for lubrication. However, paraffin wax has a melting point of around 60°C and is solid at room temperature, making it difficult to evenly coat the wire. Therefore, the paraffin wax is evenly dissolved in liquid cyclohexane to create a mixed lubricant, which is then evenly coated on the finished wire.

[0003] Chinese patent publication number CN115488014B discloses an automatic hot wax coating device for silver-plated copper enameled wire, which includes a stand, a coating mechanism and a smearing mechanism. A smearing mechanism for automatically and evenly coating the lubricating liquid coated on the silver-plated copper enameled wire is provided between the stand and the coating mechanism. When the electric wheel rotates, the device can swing the contact rod upward by toggling the toggle rod, so that the annular magnetic block can drive the elastic coating block to rotate, and automatically and evenly coat the lubricating liquid coated on the silver-plated copper enameled wire, so that the surface of the silver-plated copper enameled wire can be coated with the lubricating liquid without dead angles. However, in actual use, the device cannot clean the excess paraffin on the surface of the component where the paraffin is coated on the surface of the enameled wire, which may cause uneven coating after a period of time. Summary of the Invention

[0004] The main purpose of the present invention is to provide an automatic hot wax coating device for enameled wire, which can effectively solve the problem of cleaning excess paraffin on the surface of parts that cannot be coated with paraffin on the surface of the enameled wire, which may cause uneven coating after a period of time.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A device for automatically coating enameled wire with hot wax comprises a workbench, a bobbin placement rack is provided on one side of the upper end of the workbench, a bobbin placement mechanism is provided on the side of the outer surface of the two mounting frames away from the bobbin placement rack, mounting frames are provided on both sides of the upper end of the workbench, limiting rollers are provided on both sides of the upper end of the two mounting frames, a hot wax guide mechanism is provided in the middle of the outer surface of the two mounting frames, and a wax coating device fixedly installed on the upper end of the workbench is provided below the hot wax guide mechanism.

[0007] Preferably, the wire bobbin placement rack includes a placement frame, which is fixedly mounted on the upper end of the workbench, and limiting tooth plates are slidably mounted on both sides of the middle part of the inner cavity of the two placement frames, and the lower ends of the two limiting tooth plates are provided with elastic telescopic rods fixedly mounted on the inner wall of the placement frame, and both ends of the two limiting tooth plates are provided with pressing plates slidably mounted on the inner wall of the placement frame, and the upper part of the inner cavity of the placement frame is provided with multiple groups of wire bobbin limiting plates slidably mounted on the inner cavity surface of the placement frame, and multiple groups of wire bobbin limiting plates are adapted for use with the two limiting tooth plates.

[0008] Preferably, the hot wax diversion mechanism includes a hot wax diversion box, which is fixedly installed on the middle of the outer surface of the two mounting frames. Two connecting pipes are fixedly installed on the lower end of the hot wax diversion box. The inner cavities of the two connecting pipes are connected to the inner cavity of the hot wax diversion box, and a plurality of discharge hoses are provided on the lower part of the outer surface of the two connecting pipes.

[0009] Preferably, the wax coating device includes multiple mounting frames 2, multiple mounting frames 2 are fixedly mounted on the middle of the upper end of the workbench, the middle of the inner cavity of multiple mounting frames 2 are provided with a coating mechanism, and the lower part of multiple mounting frames 2 is provided with a residual material collection mechanism.

[0010] Preferably, the second mounting frame includes two annular frames, and the middle part of the outer surface of the two annular frames is provided with a mounting rod fixedly mounted on the upper end of the workbench, and two limit rods are provided on the upper and lower sides of the outer surface of the two annular frames, and multiple limit rods extend to the interior of the two annular frames respectively, and the outer surfaces of multiple limit rods are wrapped with springs fixedly mounted on the outer surfaces of the two annular frames respectively, and two mounting rings are slidably mounted in the middle of the inner cavity of the two annular frames, and multiple limit rods are grouped in pairs and fixedly connected to the outer surfaces of the four mounting rings respectively.

[0011] Preferably, the smearing mechanism includes two smearing wheels, a connecting tube 2 is provided in the middle of the two smearing wheels, a guide frame is provided in the middle of the outer surface of the two connecting tubes 2, the two guide frames are arranged opposite to each other, and the inner cavities of the two guide frames are respectively connected to the inner cavities of the two smearing wheels.

[0012] Preferably, the two connecting pipes 2 are fixedly connected to the inner surface of the mounting ring located on the same side of the inner cavity of a mounting frame 2, and the inner cavities of the two connecting pipes 2 are respectively connected to the inner cavities of the corresponding two discharge hoses.

[0013] Preferably, the residual material collection mechanism includes a collection box, and a plurality of guide tubes 1 are provided on one side of the upper end of the collection box, and a scraper 1 is provided on the upper part of the plurality of guide tubes 1, and a plurality of guide tubes 2 are provided on the other side of the upper end of the collection box, and a scraper 2 is provided on the upper part of the plurality of guide tubes 2, and the plurality of scrapers 1 are respectively adapted for use with the smearing wheels located at the lower part of the plurality of smearing mechanisms, and the plurality of scrapers 2 are respectively adapted for use with the smearing wheels located at the upper part of the plurality of smearing mechanisms.

[0014] Preferably, the bobbin placing mechanism includes a placing rod and a motor for placing the bobbin, the placing rod is rotatably mounted on the outer surface of two mounting frames, the motor is fixedly mounted on the outer surface of mounting frame one on one side, and a transmission part fixedly mounted on the upper end of the workbench is provided on one side of the outer surface of the placing rod, and the placing rod and the transmission part are adapted for use.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, a coating mechanism is provided. During the process of winding the enameled wire by the bobbin placement mechanism, a plurality of enameled wires pass through a plurality of coating mechanisms respectively. By coating a plurality of enameled wires at the same time, the coating efficiency is accelerated. At the same time, the distance between the two coating wheels can be adjusted according to the diameter of the enameled wire under the action of the second mounting frame, thereby improving the reliability of the device.

[0017] 2. In the present invention, by providing a residual material collecting mechanism, during the process of coating the enameled wire by the coating mechanism, the residual material collecting mechanism can clean up the excess hot wax, thereby avoiding the phenomenon of uneven coating of the hot wax on the surface of the enameled wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 This is a schematic structural diagram of the bobbin placement rack of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the hot wax guide mechanism of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the wax coating device of the present invention;

[0023] Figure 6 This is a structural schematic diagram of the second mounting frame of the present invention;

[0024] Figure 7 Schematic diagram of the coating mechanism structure of the present invention Figure 1 ;

[0025] Figure 8 Schematic diagram of the coating mechanism structure of the present invention Figure 2 ;

[0026] Figure 9 Schematic diagram of the residual material collection mechanism of the present invention Figure 1 ;

[0027] Figure 10 Schematic diagram of the residual material collection mechanism of the present invention Figure 2 ;

[0028] Figure 11 Schematic diagram of the residual material collection mechanism of the present invention Figure 3 ;

[0029] Figure 12 For the present invention Figure 2 A partial enlarged view of point A in the middle.

[0030] In the figure: 1. workbench; 2. bobbin placement rack; 21. placement frame; 22. limiting tooth plate; 23. elastic telescopic rod; 24. bobbin limiting plate; 25. pressing plate; 3. mounting frame 1; 4. limiting roller; 5. hot wax guide mechanism; 51. hot wax guide box; 52. connecting pipe 1; 53. unloading hose; 6. wax coating device; 61. mounting frame 2; 611. annular frame; 612. limiting rod; 613. mounting ring; 614. mounting rod; 62. smearing mechanism; 621. smearing wheel; 622. connecting pipe 2; 623. guide frame; 63. residual material collecting mechanism; 631. collecting box; 632. guide pipe 1; 633. guide pipe 2; 634. scraper 1; 635. scraper 2; 7. bobbin placement mechanism; 71. placement rod; 72. motor; 73. transmission parts. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] Example

[0033] like Figure 1 and Figure 2As shown, this embodiment discloses an automatic hot wax coating device for enameled wire, comprising a workbench 1, a bobbin placement rack 2 is provided on one side of the upper end of the workbench 1, a bobbin placement mechanism 7 is provided on the side of the outer surface of two mounting racks 3 away from the bobbin placement rack 2, mounting racks 1 are provided on both sides of the upper end of the workbench 1, limiting rollers 4 are provided on both sides of the upper end of the two mounting racks 3, a hot wax guide mechanism 5 is provided in the middle of the outer surface of the two mounting racks 3, and a wax coating device 6 fixedly installed on the upper end of the workbench 1 is provided below the hot wax guide mechanism 5.

[0034] Specifically, before coating the surface of the enameled wire with hot wax, the staff needs to place multiple bobbins wrapped with enameled wire on the bobbin placement rack 2, and then introduce one end of the enameled wire into the corresponding bobbin on the bobbin placement mechanism 7. Then the staff starts the bobbin placement mechanism 7 to make the bobbin placement mechanism 7 reel in the coated enameled wire. During this process, the hot wax guide mechanism 5 introduces the hot wax in its inner cavity into the inner cavity of the wax coating device 6, and the surface of the enameled wire is coated by the wax coating device 6.

[0035] To prevent multiple bobbins, e.g. Figure 3 As shown, the wire bobbin placement rack 2 includes a placement frame 21, which is fixedly installed on the upper end of the workbench 1. Limiting tooth plates 22 are slidably installed on both sides of the middle part of the inner cavity of the two placement frames 21. The lower ends of the two limiting tooth plates 22 are provided with elastic telescopic rods 23 fixedly installed on the inner wall of the placement frame 21. Both ends of the two limiting tooth plates 22 are provided with pressing plates 25 slidably installed on the inner wall of the placement frame 21. The upper part of the inner cavity of the placement frame 21 is provided with multiple groups of wire bobbin limiting plates 24 slidably installed on the inner cavity surface of the placement frame 21. The multiple groups of wire bobbin limiting plates 24 are adapted for use with the two limiting tooth plates 22.

[0036] Specifically, when a new bobbin with enameled wire needs to be placed, the staff can press the pressing plates 25 on both sides, so that the two pressing plates 25 drive the two limiting tooth plates 22 to move downward, so that the limiting tooth plates 22 no longer contact the surface of the bobbin limiting plates 24. At this time, the staff can move two bobbin limiting plates 24 in a set of bobbin limiting plates 24 to the side away from each other, and then place the bobbin between the two bobbin limiting plates 24, and then restore the two bobbin limiting plates 24 to their initial positions, and finally release the pressing plates 25. At this time, the elastic telescopic rod 23 will push the two limiting tooth plates 22 back to their initial positions, and limit the bobbin limiting plates 24 again.

[0037] In order to store the hot wax, the hot wax can also be introduced into the wax coating device 6, so that the wax coating device 6 coats the surface of the enameled wire with hot wax. Figure 4As shown, the hot wax guide mechanism 5 includes a hot wax guide box 51, which is fixedly installed on the middle of the outer surface of the two mounting frames 3. Two connecting pipes 52 are fixedly installed on the lower end of the hot wax guide box 51. The inner cavities of the two connecting pipes 52 are connected to the inner cavity of the hot wax guide box 51, and a plurality of discharge hoses 53 are provided on the lower part of the outer surface of the two connecting pipes 52.

[0038] Specifically, the hot wax guide box 51 is used to place paraffin and, at the same time, prevent the paraffin from cooling and solidifying. During the process of coating the enameled wire by the wax coating device 6, the hot wax guide box 51 needs to introduce the hot wax in its inner cavity into the inner cavity of the wax coating device 6 through a connecting pipe 52 and multiple discharge hoses 53.

[0039] In order to coat the surface of the enameled wire with hot wax, and at the same time, in the coating process, in order to clean up the excess hot wax and avoid uneven coating of the hot wax on the surface of the enameled wire, such as Figure 5 As shown, the wax coating device 6 includes multiple mounting racks 61, which are fixedly mounted on the middle of the upper end of the workbench 1. The middle of the inner cavity of the multiple mounting racks 61 is provided with a coating mechanism 62, and the lower part of the multiple mounting racks 61 is provided with a residual material collection mechanism 63.

[0040] Specifically, in the process of winding the enameled wire by the bobbin placing mechanism 7, multiple enameled wires pass through multiple coating mechanisms 62 respectively. In this process, multiple hot wax guide boxes 51 introduce hot wax into the coating mechanism 62, and then the coating mechanism 62 coats the hot wax onto the surface of the enameled wire. In the process of coating the enameled wire by the coating mechanism 62, there will be excess hot wax on the surface of the coating mechanism 62. When used for a long time, a large amount of paraffin will adhere to the surface of the coating mechanism 62, resulting in uneven hot wax coating on the enameled wire. Therefore, the residual material collection mechanism 63 is required to clean the surface of the coating mechanism 62.

[0041] In order to apply hot wax to the surface of the enameled wire, such as Figure 6 and Figure 7 As shown, the second mounting frame 61 includes two annular frames 611, and the middle part of the outer surface of the two annular frames 611 is provided with a mounting rod 614 fixedly installed on the upper end of the workbench 1, and two limiting rods 612 are provided on the upper and lower sides of the outer surface of the two annular frames 611, and multiple limiting rods 612 extend to the interior of the two annular frames 611 respectively. The outer surfaces of the multiple limiting rods 612 are wrapped with springs fixedly installed on the outer surfaces of the two annular frames 611 respectively, and two mounting rings 613 are slidably installed in the middle of the inner cavity of the two annular frames 611. The multiple limiting rods 612 are grouped in pairs and fixedly connected to the outer surfaces of the four mounting rings 613 respectively.

[0042] Further, such as Figure 7 and Figure 8As shown, the smearing mechanism 62 includes two smearing wheels 621, and a connecting pipe 622 is provided in the middle of the two smearing wheels 621. A guide frame 623 is provided in the middle of the outer surface of the two connecting pipes 622. The two guide frames 623 are arranged opposite to each other, and the inner cavities of the two guide frames 623 are respectively connected to the inner cavities of the two smearing wheels 621.

[0043] Furthermore, the two connecting pipes 622 are fixedly connected to the inner surface of the mounting ring 613 located on the same side of the inner cavity of the mounting frame 61, and the inner cavities of the two connecting pipes 622 are respectively communicated with the inner cavities of the corresponding two discharge hoses 53.

[0044] Specifically, a plurality of holes are provided on the surface of the coating wheel 621 so that the hot wax introduced into the inner cavity of the coating wheel 621 by the connecting tube 2 622 through the guide frame 623 can be introduced into the surface of the coating wheel 621 through the holes, thereby coating the surface of the enameled wire. At the same time, the arc-shaped end face of the guide frame 623 is adapted to the inner cavity surface of the coating wheel 621, and can better discharge the hot wax from the corresponding holes at this time.

[0045] Furthermore, when the enameled wire passes between the two coating wheels 621, the two coating wheels 621 move to both sides according to the diameter of the enameled wire. At this time, multiple limiting rods 612 push the two coating wheels 621 toward each other through the mounting ring 613 under the action of the spring, so that the two coating wheels 621 can be in close contact with the surface of the enameled wire.

[0046] During the coating process, in order to clean up the excess hot wax and avoid uneven coating of the hot wax on the surface of the enameled wire, such as Figures 9-11 As shown, the residual material collection mechanism 63 includes a collection box 631, and a plurality of guide tubes 1 632 are provided on one side of the upper end of the collection box 631, and a scraper 1 634 is provided on the upper part of the plurality of guide tubes 1 632. A plurality of guide tubes 2 633 are provided on the other side of the upper end of the collection box 631, and a scraper 2 635 is provided on the upper part of the plurality of guide tubes 2 633. The plurality of scrapers 1 634 are respectively adapted for use with the smearing wheels 621 located at the lower part of the plurality of smearing mechanisms 62, and the plurality of scrapers 2 635 are respectively adapted for use with the smearing wheels 621 located at the upper part of the plurality of smearing mechanisms 62.

[0047] Specifically, in the process of the two coating wheels 621 coating the surface of the enameled wire with hot wax, the enameled wire will drive the two coating wheels 621 to rotate. During this process, scraper 1 634 and scraper 2 635 will clean the excess hot wax on the surfaces of the upper and lower coating wheels 621. The cleaned hot wax is introduced into the inner cavity of the collection box 631 through the guide tube 1 632 and the guide tube 2 633 for storage. After the device has been working for a period of time, the staff can remove the collection box 631 and clean the hot wax in its inner cavity.

[0048] In order to reel the coated enameled wire, Figure 12 As shown, the bobbin placing mechanism 7 includes a placing rod 71 for placing the bobbin and a motor 72. The placing rod 71 is rotatably mounted on the outer surfaces of the two mounting frames 3, and the motor 72 is fixedly mounted on the outer surface of the mounting frame 3 on one side. A transmission member 73 fixedly mounted on the upper end of the workbench 1 is provided on one side of the outer surface of the placing rod 71. The placing rod 71 and the transmission member 73 are adapted for use.

[0049] Specifically, after placing the new placement rod 71 on the outer surface of the mounting frame 3, the staff inserts the placement rod 71 into the inner cavity of the transmission member 73. At this time, the motor 72 can drive the placement rod 71 to rotate through the transmission member 73, so that the wire drum placed on the outer surface of the placement rod 71 can reel in the coated enameled wire.

[0050] It should be noted that the specific installation method, circuit arrangement and connection method, and control method of the hot wax guide box 51 and the motor 72 used in the above embodiment are conventional designs in the prior art and will not be elaborated in detail in the present invention.

[0051] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic hot wax coating device for enameled wire, comprising a workbench (1), characterized in that: A bobbin placement rack (2) is provided on one side of the upper end of the workbench (1), a bobbin placement mechanism (7) is provided on the side of the outer surface of the two mounting racks (3) away from the bobbin placement rack (2), mounting racks (3) are provided on both sides of the upper end of the workbench (1), limiting rollers (4) are provided on both sides of the upper end of the two mounting racks (3), a hot wax guide mechanism (5) is provided in the middle of the outer surface of the two mounting racks (3), and a wax coating device (6) fixedly installed on the upper end of the workbench (1) is provided below the hot wax guide mechanism (5).

2. The automatic hot wax coating device for enameled wire according to claim 1, characterized in that: The bobbin placement rack (2) comprises a placement frame (21), the placement frame (21) is fixedly mounted on the upper end of the workbench (1), and limiting tooth plates (22) are slidably mounted on both sides of the middle of the inner cavity of the two placement frames (21), and the lower ends of the two limiting tooth plates (22) are provided with elastic telescopic rods (23) fixedly mounted on the inner wall of the placement frame (21), and both ends of the two limiting tooth plates (22) are provided with pressing plates (25) slidably mounted on the inner wall of the placement frame (21), and the upper part of the inner cavity of the placement frame (21) is provided with multiple groups of bobbin limiting plates (24) slidably mounted on the inner cavity surface of the placement frame (21), and the multiple groups of bobbin limiting plates (24) are adapted for use with the two limiting tooth plates (22).

3. The automatic hot wax coating device for enameled wire according to claim 1, characterized in that: The hot wax guide mechanism (5) includes a hot wax guide box (51), which is fixedly installed on the middle part of the outer surface of two mounting frames (3). Two connecting pipes (52) are fixedly installed on the lower end of the hot wax guide box (51), and the inner cavities of the two connecting pipes (52) are connected to the inner cavity of the hot wax guide box (51). A plurality of discharge hoses (53) are provided on the lower part of the outer surface of the two connecting pipes (52).

4. The automatic hot wax coating device for enameled wire according to claim 1, characterized in that: The wax coating device (6) includes a plurality of mounting frames (61), wherein the plurality of mounting frames (61) are fixedly mounted on the middle portion of the upper end of the workbench (1), a coating mechanism (62) is provided in the middle portion of the inner cavity of the plurality of mounting frames (61), and a residual material collecting mechanism (63) is provided at the lower portion of the plurality of mounting frames (61).

5. The automatic hot wax coating device for enameled wire according to claim 4, characterized in that: The second mounting frame (61) includes two annular frames (611), and the middle of the outer surface of the two annular frames (611) is provided with a mounting rod (614) fixedly installed on the upper end of the workbench (1). Two limiting rods (612) are provided on the upper and lower sides of the outer surface of the two annular frames (611), and multiple limiting rods (612) extend into the interior of the two annular frames (611) respectively. The outer surfaces of the multiple limiting rods (612) are wound with springs fixedly installed on the outer surfaces of the two annular frames (611) respectively. Two mounting rings (613) are slidably installed in the middle of the inner cavity of the two annular frames (611), and the multiple limiting rods (612) are grouped in pairs and fixedly connected to the outer surfaces of the four mounting rings (613).

6. The automatic hot wax coating device for enameled wire according to claim 5, characterized in that: The smearing mechanism (62) includes two smearing wheels (621), the middle of each of the two smearing wheels (621) is provided with a second connecting pipe (622), the middle of the outer surface of each of the two second connecting pipes (622) is provided with a guide frame (623), the two guide frames (623) are arranged opposite to each other, and the inner cavities of the two guide frames (623) are respectively communicated with the inner cavities of the two smearing wheels (621).

7. The automatic hot wax coating device for enameled wire according to claim 6, characterized in that: The two connecting pipes (622) are fixedly connected to the inner surface of the mounting ring (613) located on the same side of the inner cavity of a mounting frame (61), and the inner cavities of the two connecting pipes (622) are respectively communicated with the inner cavities of the corresponding two discharge hoses (53).

8. The automatic hot wax coating device for enameled wire according to claim 6, characterized in that: The residual material collection mechanism (63) includes a collection box (631), a plurality of guide tubes (632) are provided on one side of the upper end of the collection box (631), and a scraper (634) is provided on the upper part of each of the plurality of guide tubes (632). A plurality of guide tubes (633) are provided on the other side of the upper end of the collection box (631), and a scraper (635) is provided on the upper part of each of the plurality of guide tubes (633). The plurality of scrapers (634) are respectively adapted for use with the smearing wheels (621) located at the lower part of the plurality of smearing mechanisms (62), and the plurality of scrapers (635) are respectively adapted for use with the smearing wheels (621) located at the upper part of the plurality of smearing mechanisms (62).

9. The automatic hot wax coating device for enameled wire according to claim 1, characterized in that: The bobbin placement mechanism (7) comprises a placement rod (71) for placing the bobbin and a motor (72), wherein the placement rod (71) is rotatably mounted on the outer surfaces of two mounting frames (3), and the motor (72) is fixedly mounted on the outer surface of the mounting frame (3) located on one side. A transmission member (73) fixedly mounted on the upper end of the workbench (1) is provided on one side of the outer surface of the placement rod (71), and the placement rod (71) and the transmission member (73) are adapted for use.

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