Hand-held sealer wheel polisher

Abstract

This invention relates to the field of polishing machines, and more particularly to a handheld sealing wheel polishing machine. The machine comprises a drive motor, a battery, a control circuit board, a polishing machine housing, a push-pull device, a polishing wheel assembly for cleaning the sides of the sealing wheel, a power wheel assembly for rotating the sealing wheel, and a handle portion located at one end of the polishing machine housing. The push-pull device is disposed on the surface of the handle portion. The power wheel assembly is movably disposed on the surface of the polishing machine housing, with the polishing wheel assembly located between the two power wheel assemblies. A push-pull portion is provided at the end of each power wheel assembly, and the push-pull device is connected to the push-pull portion, causing the two power wheel assemblies to move away from or closer to each other. The drive motor drives both the power wheel assembly and the polishing wheel assembly. The distance between the two power wheels can be changed according to actual needs to accommodate different sealing wheels. The polishing device of this application has a built-in battery, eliminating the need for a plug-in operating method.

Description

Technical Field

[0001] This invention relates to the field of polishing machines, and more particularly to a handheld sealing wheel polishing machine. Background Technology

[0002] The sealing of beer and beverage cans is achieved by a sealing machine. The main component, the sealing roller, experiences friction and slippage relative to the aluminum cap during continuous sealing. Over time, this causes stubborn aluminum powder to accumulate on the grooves (working surface) of the roller. This affects the sealing quality and the product's appearance. Therefore, to address these technical problems, a roller cleaning and polishing device has been developed to clean the grooves (working surface) of the sealing roller.

[0003] The existing polishing equipment has a fixed and non-adjustable active roller angle, so although it has two workstations, it cannot be adapted to multiple models (with different roller spacing) and multiple rollers, and can only be used on dedicated machines. In addition, the existing polishing equipment requires a plug-in working mode, which raises safety issues and is inconvenient to use in the workshop. The equipment's top-heavy design makes it difficult to hold. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a handheld sealing wheel polishing machine. A push-pull device connects to the push-pull section, allowing the power wheels on both sides of the power swing housing to move closer or further apart. Therefore, the distance between the two power wheels can be adjusted according to actual needs, adapting to different sealing wheels and enabling multi-purpose use. Furthermore, the polishing device of this application has a built-in battery, eliminating the need for a plug-in operating method. The handheld operation eliminates the hassle of winding cables and makes operation more convenient.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a handheld sealing wheel polishing machine, comprising a drive motor, a battery, a control circuit board, a polishing machine housing, a push-pull device, a polishing wheel assembly for cleaning the side of the sealing wheel, a power wheel assembly for driving the sealing wheel to rotate, and a handle portion disposed at one end of the polishing machine housing; wherein the drive motor, battery, and control circuit board are all disposed inside the handle portion, and the push-pull device is disposed on the surface of the handle portion; the power wheel assembly is movably disposed on the surface of the polishing machine housing, and the polishing wheel assembly is located between the two power wheel assemblies; wherein a push-pull portion is provided at the end of the power wheel assembly, and the push-pull device is connected to the push-pull portion, causing the two power wheel assemblies to move away from or closer to each other; and the drive motor drives the power wheel assembly and the polishing wheel assembly respectively.

[0006] Furthermore, the polishing wheel assembly includes a polishing wheel and a first drive shaft located inside the polishing machine housing. The top of the first drive shaft extends to the surface of the polishing machine housing and is connected to the polishing wheel. A first drive gear is sleeved on the bottom of the first drive shaft. Each power wheel assembly includes a power swing housing, a power wheel, a third drive gear, a drive belt, a power wheel shaft, and a second drive shaft arranged parallel to the first drive shaft and located inside the polishing machine housing. A second drive gear is sleeved on the bottom of the second drive shaft. The first drive gear meshes with two second drive gears. The second drive shaft extends into the power swing housing and is connected to the third drive gear. The drive belt is sleeved on the third drive gear and the power wheel shaft. The power wheel shaft extends out of the power swing housing and is connected to the power wheel. The bottom of the power swing housing is movably disposed on the surface of the polishing machine housing. The tail of the power swing housing is integrally formed with a push-pull part. The push-pull device is connected to the push-pull part and causes the two power wheels on both sides to move closer or further apart. The output shaft of the drive motor is driven and connected to a first bevel gear sleeved on the first drive shaft, which drives the polishing wheel located at the top of the first drive shaft to rotate. At the same time, the first drive shaft drives the second drive shafts on both sides to rotate.

[0007] Furthermore, the push-pull device includes a sleeve, a push rod, and a push-pull block; the surface of the handle is provided with two bearing seats, wherein the two ends of the sleeve are movably mounted on the two bearing seats through bearings, and the inner wall of the sleeve is provided with internal threads, and the outer wall of the push rod is provided with external threads, wherein the push rod is fitted with the internal threads of the sleeve through the external threads, wherein the end of the push rod is connected to the push-pull block, and the push-pull block is provided with a notch for the push-pull part to pass through.

[0008] Furthermore, the surface of the polishing machine housing is provided with two limiting plates, and the two limiting plates form a push-pull slide rail in the same axis as the push rod. The push-pull block is set in the push-pull slide rail and moves along the push-pull slide rail.

[0009] Furthermore, a lifting assembly is provided at the front end of the polishing machine housing. The lifting assembly includes a lifting platform, an adjusting screw, and an adjusting nut threaded onto the adjusting screw. The end of the adjusting screw located inside the polishing machine housing extends to the surface of the polishing machine housing and is fitted with the lifting platform. Adjusting notches are provided on both sides of the polishing machine housing for the adjusting nut to pass through, with the adjusting nut located at the adjusting notch.

[0010] Furthermore, a front-end power wheel assembly is also provided, which includes a front-end power housing, a front-end power wheel, a front-end power shaft, a second bevel gear, and a third transmission shaft. The front-end power housing is mounted on the front end of the polishing machine housing. One end of the front-end power shaft, located inside the front-end power housing, extends out of the front-end power housing and is mounted on the front-end power wheel. The second bevel gear is sleeved on the front-end power shaft. The two ends of the third transmission shaft mesh with the first bevel gear and the second bevel gear, respectively, so that the first bevel gear and the second bevel gear can transmit power.

[0011] Furthermore, the front-end power housing includes a sliding housing slidably mounted on the front end of the polishing machine housing and a front-end housing integrally formed on the front end of the sliding housing; wherein the front-end power shaft is located inside the front-end housing, and the third transmission shaft is located inside the sliding housing; wherein a mounting sleeve is provided inside the sliding housing, and a spring receiving cavity is provided between the mounting sleeve and the inner wall of the sliding housing, and a return spring sleeved outside the mounting sleeve is installed in the spring receiving cavity; simultaneously, first sliding notches extending along the length direction are provided on both sides of the sliding housing, and a spring clip is also installed at the front end of the polishing machine housing, the spring clip is fixed to the front end of the polishing machine housing, and the spring clip extends into the spring receiving cavity, with one end of the return spring abutting against the spring clip; the third transmission shaft... The shaft includes a first bevel gear shaft, a spline shaft, a short shaft, and a second bevel gear shaft. The first bevel gear shaft meshes with a first bevel gear and is movably mounted in the polishing machine housing via bearings. A sliding groove extending along its length is provided in the first bevel gear shaft. One end of the spline shaft is fitted into the sliding groove, and the other end of the spline shaft has a threaded groove extending along its length. The outer surface of one end of the short shaft is provided with an external thread, and the short shaft is threaded into the threaded groove via its external thread. The other end of the short shaft is movably fitted with a mounting sleeve via bearings. The other end of the short shaft continues to extend and meshes with the second bevel gear via the second bevel gear shaft. The second bevel gear is fitted with the front power housing via several first one-way bearings.

[0012] Furthermore, an outer slider is provided, which is slidably mounted on the front end of the polishing machine housing, and the sliding outer shell is slidably mounted inside the outer slider; a spring clip is fixed to the front end of the outer slider; a rotating column is provided at the bottom of the polishing machine housing, and an adjusting turntable is movably mounted on the rotating column. The surface of the adjusting turntable is provided with a limiting groove, and a limiting post is provided at the bottom of the outer slider, wherein the limiting post passes through the second sliding notch located at the bottom of the sliding outer shell and extends into the limiting groove; a tension spring and a tension push rod are also provided inside the polishing machine housing. The end of the tension push rod is pressed against the side of the outer slider under the action of the tension spring, so that the limiting post of the outer slider abuts against the inner wall of the limiting groove.

[0013] Furthermore, a base is provided at the bottom of the adjustment dial, and a display window is provided on the base; the bottom of the adjustment dial is provided with corresponding gear markings.

[0014] Furthermore, the handle is provided with a first air passage that communicates with the internal cavity of the polishing machine housing, and the handle is provided with several air inlets that communicate with the interior of the handle.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. In this application, the push-pull device is connected to the push-pull part, and the power wheels on both sides located on the power swing housing are brought closer or further apart. Therefore, the distance between the power wheels on both sides can be changed according to actual needs, so as to adapt to different sealing wheels and make one machine multi-purpose.

[0017] 2. In addition, the drive motor, battery and control circuit board are all located inside the handle. Therefore, the polishing device of this application has a built-in battery, eliminating the need for a plug-in working method. The handheld working method eliminates the trouble of wire winding and makes the work more convenient.

[0018] 3. In this application, the handle is provided with a first air passage communicating with the internal cavity of the polishing machine housing, and the handle is provided with several air inlets communicating with the interior of the handle. Since the polishing machine in this application is generally used to polish sealing wheels in the beverage industry, some beverage liquid is inevitably present on these sealing wheels. Therefore, by driving the motor at high speed, external air is introduced into the handle through the air inlets, and then enters the internal cavity of the polishing machine housing through the first air passage. The gas can overflow through the gaps between the various bearings and components, thus providing a certain degree of waterproofing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a handheld sealing wheel polishing machine.

[0020] Figure 2 This is a cross-sectional structural diagram of a handheld sealing wheel polishing machine.

[0021] Figure 3 This is a schematic diagram of the internal structure of a handheld sealing wheel polishing machine.

[0022] Figure 4 This is a structural diagram of the lifting assembly.

[0023] Figure 5 This is a schematic diagram of the adjustment turntable.

[0024] Figure 6 This is a structural schematic diagram of the front-end drive wheel assembly.

[0025] Figure 7 yes Figure 6 A schematic diagram of the structure with an external slider attached to the base.

[0026] Figure 8 This is a cross-sectional structural diagram of the polishing machine housing and the handle of the polishing machine housing, which are integrally formed.

[0027] Reference numerals: Polishing machine housing 1, Battery 11, Drive motor 12, Handle 2, Speed ​​adjustment knob 21, Forward / Reverse switch 22, Air inlet 23, First air passage 24, Sleeve 31, Shaft seat 32, Push rod 33, Push-pull block 34, Limit cover 35, Limit plate 36, Power swing housing 41, Push-pull part 411, Second transmission shaft 42, Second transmission gear 43, Third transmission gear 44, Power wheel shaft 45, Power wheel 46, Front power wheel 51, Front power shaft 52, Front power housing 53, Second bevel gear 54, Second bevel gear shaft 55 56. Short shaft, 57. Splined shaft, 58. First bevel gear shaft, 59. Outer slider, 591. Limiting post, 510. Sliding housing, 5101. First sliding notch, 511. Mounting sleeve, 512. Return spring, 513. Tensioning spring, 514. Tensioning rod, 515. Adjusting turntable, 5151. Limiting groove, 5152. Spring clip, 516. First one-way bearing, 517. Polishing wheel, 61. First drive shaft, 62. First bevel gear, 63. First transmission gear, 64. Output shaft, 65. Second one-way bearing, 71. Lifting platform, 72. Adjusting screw, 73. Adjusting nut. Detailed Implementation

[0028] Please see Figure 1-8 As shown, this invention relates to a handheld sealing wheel polishing machine, comprising a drive motor 12, a battery 11, a control circuit board, a polishing machine housing 1, a push-pull device, a polishing wheel assembly for cleaning the side of the sealing wheel, a power wheel 46 assembly for driving the sealing wheel to rotate, and a handle portion 2 disposed at one end of the polishing machine housing 1; wherein the drive motor 12, battery 11, and control circuit board are all disposed inside the handle portion 2, and the push-pull device is disposed on the surface of the handle portion 2; the power wheel 46 assembly is movably disposed on the surface of the polishing machine housing 1, and the polishing wheel assembly is located between two power wheels 46 assemblies; wherein the end of the power wheel 46 assembly is provided with a push-pull portion 411, wherein the push-pull device is connected to the push-pull portion 411, and the two power wheels 46 assemblies are moved away from or close to each other; and the drive motor 12 drives the power wheel 46 assembly and the polishing wheel assembly respectively.

[0029] The polishing wheel assembly includes a polishing wheel 6 and a first drive shaft 61 located inside the polishing housing 1. The top of the first drive shaft 61 extends to the surface of the polishing housing 1 and is connected to the polishing wheel 6, and a first drive gear 63 is sleeved on the bottom of the first drive shaft 61. Each power wheel 46 assembly includes a power swing housing 41, a power wheel 46, a third drive gear 44, a drive belt, a power wheel shaft 45, and a second drive shaft 42 arranged parallel to the first drive shaft 61 and located inside the polishing housing 1. The bottom of the second drive shaft 42 is sleeved with a second drive gear 43, and the first drive gear 63 meshes with two second drive gears 43 respectively. The second drive shaft 42 extends into the power swing housing 41 and is connected to the third drive gear 64. 44 are connected, and the transmission belts are respectively sleeved on the third transmission gear 44 and the power wheel shaft 45. The power wheel shaft 45 extends to the outside of the power swing housing 41 and is connected to the power wheel 46. The bottom of the power swing housing 41 is movably set on the surface of the polishing machine housing 1, and the tail of the power swing housing 41 is also integrally formed with a push-pull part 411. The push-pull device is connected to the push-pull part 411 and makes the power wheels 46 on both sides of the power swing housing 41 move closer or further away from each other. The output shaft 64 of the drive motor 12 is driven and connected to the first bevel gear 62 sleeved on the first transmission shaft 61, and drives the polishing wheel 6 located at the top of the first transmission shaft 61 to rotate. At the same time, the first transmission shaft 61 drives the second transmission shafts 42 on both sides to rotate.

[0030] In this application, the push-pull device is connected to the push-pull part 411, and the power wheels 46 on both sides located on the power swing housing 41 are brought closer or further apart. Therefore, the distance between the power wheels 46 on both sides can be changed according to actual needs, so that different sealing wheels can be adapted and one machine can be used for multiple purposes.

[0031] Furthermore, the drive motor 12, battery 11, and control circuit board are all housed within the handle portion 2. Therefore, the polishing device of this application has a built-in battery 11, eliminating the need for a plug-in operating method. The handheld operation eliminates the hassle of winding cables and makes operation more convenient. The surface of the handle portion 2 is equipped with a speed adjustment knob 21 electrically connected to the control circuit board and a forward / reverse switch 22 for controlling forward and reverse rotation. The speed can be controlled by adjusting the speed knob 21, and the forward / reverse switch 22 can be used to control the forward and reverse rotation of the drive motor 12.

[0032] In this specific embodiment, the push-pull device includes a sleeve 31, a push rod 33, and a push-pull block 34. A handle 2 is provided at the rear end of the polishing machine housing 1, and two bearing seats 32 are provided on the surface of the handle 2. The two ends of the sleeve 31 are movably mounted on the two bearing seats 32, and the inner wall of the sleeve 31 is provided with an internal thread. The outer wall of the push rod 33 is provided with an external thread, and the push rod 33 is fitted with the internal thread of the sleeve 31 through its external thread. The end of the push rod 33 is connected to the push-pull block 34, and the push-pull block 34 has a notch for the push-pull part 411 to pass through. By rotating the sleeve 31, the push rod 33 moves along the axial direction of the sleeve, and simultaneously the push-pull block 34 moves along the axial direction of the push rod 33, thus achieving the push-pull action on the push-pull part 411. This causes the power swing housing 41 to rotate around the connection point between itself and the polishing machine housing 1, thereby bringing the two power wheels 46 closer together or further apart, adapting to sealing wheels of different sizes.

[0033] As a further limitation of this specific embodiment, in order to ensure that the push-pull block 34 moves along the axial direction of the push rod 33, two limiting plates 36 are provided on the surface of the polishing machine housing 1. The two limiting plates 36 form a push-pull slide rail with the same axial direction as the push rod 33. The push-pull block 34 is disposed in the push-pull slide rail and moves along the push-pull slide rail.

[0034] As a further limitation of this specific embodiment, in order to prevent metal debris from entering the push-pull slide rail during operation and affecting subsequent normal operation, a limiting cover 35 is also covered on the surface of the polishing machine housing 1. The limiting cover 35 covers the push-pull slide rail and the push-pull part 411.

[0035] To ensure stable and precise positioning of the workpiece to be polished, a lifting assembly is provided at the front end of the polishing machine housing 1. This lifting assembly includes a lifting platform 71, an adjusting screw 72, and an adjusting nut 73 threaded onto the adjusting screw 72. The end of the adjusting screw 72, located inside the polishing machine housing 1, extends to the surface of the polishing machine housing 1 and is fitted with the lifting platform 71. Adjusting notches for the adjusting nut 73 to pass through are provided on both sides of the polishing machine housing 1. The adjusting nut 73 is located at these notches. The user can simultaneously rotate the adjusting nuts 73 on both sides to move the adjusting screw 72 up and down, thereby adjusting the vertical position of the lifting platform 71.

[0036] To further stabilize the positioning of the workpiece to be polished and ensure compatibility and accurate positioning, a front-end power wheel assembly 51 is provided in this specific embodiment. This assembly includes a front-end power housing 53, a front-end power wheel 51, a front-end power shaft 52, a second bevel gear 54, and a third transmission shaft. The front-end power housing 53 is mounted on the front end of the polishing machine housing 1. One end of the front-end power shaft 52, located inside the front-end power housing 53, extends out of the housing and is mounted on the front-end power wheel 51. The second bevel gear 54 is sleeved on the front-end power shaft 52. Both ends of the third transmission shaft mesh with the first bevel gear 62 and the second bevel gear 54, respectively, enabling transmission between them. In this specific embodiment, a front-end power wheel 51 is also installed at the front end of the polishing machine housing 1. Therefore, in this application, the sealing wheel can be clamped and further driven by the two side power wheels 46 and the front-end power wheel 51. Furthermore, in this application, the front drive wheel 51 and the front drive shaft 52 are detachable, and the sealing wheel can be clamped and driven by only the two drive wheels 46 located on both sides; therefore, the front drive wheel 51 assembly can be selected or not according to the actual situation.

[0037] Furthermore, in addition to the aforementioned front-end power wheel 51 assembly, to improve its compatibility, in this specific embodiment, the front-end power wheel 51 assembly also has a telescopic clamping function, which can clamp the sealing wheel.

[0038] The front-end power housing 53 includes a sliding housing 510 slidably mounted on the front end of the polishing housing 1 and a front-end housing integrally formed on the front end of the sliding housing 510; wherein the sliding housing 510 is provided with an installation sleeve 511, and a spring receiving cavity is provided between the installation sleeve 511 and the inner wall of the sliding housing 510, and a return spring 512 sleeved on the outside of the installation sleeve 511 is installed in the spring receiving cavity; at the same time, the two sides of the sliding housing 510 are provided with a first sliding notch 5101 extending along the length direction; and the front end of the polishing housing 1 is also provided with a spring clip 516, the two ends of the spring clip 516 are fixed to the front end of the polishing housing 1, and the spring clip 516 extends into the spring receiving cavity; and one end of the return spring 512 abuts against the spring clip 516.

[0039] The third drive shaft includes a first bevel gear shaft 58, a splined shaft 57, a short shaft 56, and a second bevel gear shaft 55. The first bevel gear shaft 58 meshes with a first bevel gear 62 and is movably mounted in the polishing machine housing 1 via bearings. A sliding groove extending along its own length is provided in the first bevel gear shaft 58. One end of the splined shaft 57 is fitted in the sliding groove, and the other end of the splined shaft 57 has a threaded groove extending along its own length. The outer surface of one end of the short shaft 56 is provided with an external thread, and the short shaft 56 is threaded in the threaded groove via its own external thread. The other end of the short shaft 56 is movably fitted with a mounting sleeve 511 via bearings. The other end of the short shaft 56 continues to extend and meshes with a second bevel gear 54 via the second bevel gear shaft 55. The second bevel gear 54 is fitted with the front power housing 53 via several first one-way bearings 517, so that the second bevel gear 54 can only rotate forward and cannot rotate in reverse.

[0040] The specific working process is as follows: The output end of the drive motor 12 drives the first bevel gear 62 to reverse, the first bevel gear 62 drives the first bevel shaft 58 and spline shaft 57 to reverse, and then the spline shaft 57 drives the short shaft 56 to reverse. However, since the upper and lower ends of the second bevel gear 54 of the front power wheel 51 are equipped with the first one-way bearing 517, it can only rotate forward and not reverse. Therefore, at this time, the second bevel shaft 55 and the second bevel gear 54 are actually locked. In fact, the spline shaft 57 continues to reverse, but the short shaft 56 does not rotate. Due to the external thread and the thread groove, the short shaft 56 will move away from the spline shaft 57 along its own axis. During the movement, it will drive the mounting sleeve 511 and the return spring 512 to move forward. Since the spring clip 516 remains stationary during the forward movement of the mounting sleeve 511, it only moves relative to the direction of the first sliding notch 5101. During the forward movement, the return spring 512 is compressed by the spring clip 516. At this time, the sealing wheel structure to be ground is placed between the three power wheels, and then the reverse rotation stops. Under the force of the return spring 512, the mounting sleeve 511 (the entire front power housing 53) moves backward together (the spline shaft 57 rotates forward at this time, and then the thread groove inside the spline shaft 57 cooperates with the short shaft 56, so that the short shaft 56 will move along the direction close to the thread groove), and the front power wheel 51 is pressed against the side of the sealing wheel structure to be ground.

[0041] In addition, to avoid the first bevel gear 62 driving the first drive shaft 61 and then the polishing wheel 6 during the reversal process, which would damage the polishing wheel 6, in this specific embodiment, the first bevel gear 62 is fitted with the first drive shaft 61 through the second one-way bearing 65. This ensures that when the drive motor 12 rotates forward, the first bevel gear 62 drives the first drive shaft 61 to rotate, and when the drive motor 12 rotates in reverse, only the first bevel gear 62 rotates, while the first drive shaft 61 does not rotate.

[0042] To accommodate sealing wheels of different sizes and specifications, another function is to adjust the clamping force, with three settings. In this application, an outer slider 59 is also provided, which is slidably mounted on the front end of the polishing machine housing 1, and the sliding outer shell 510 is slidably mounted inside the outer slider 59. The two ends of the spring clip 516 are fixed to the front end of the outer slider 59, and the spring clip 516 extends into the spring receiving cavity, and one end of the return spring 512 abuts against the spring clip 516.

[0043] The polishing machine housing 1 has a rotating column at its bottom, which is movably fitted with an adjusting turntable 515. The surface of the adjusting turntable 515 is provided with a limiting groove 5151, and the bottom of the outer slider 59 is provided with a limiting post 591. The limiting post 591 passes through the second sliding notch located in the sliding housing 510 and extends into the limiting groove 5151. The polishing machine housing 1 is also provided with a tension spring 513 and a tension push rod 33. The end of the tension push rod 33 is pressed against the side of the outer slider 59 under the action of the tension spring 513, so that the limiting post 591 of the outer slider 59 abuts against the inner wall of the limiting groove 5151.

[0044] In this application, by rotating the adjustment turntable 515, the outer slider 59 moves forward to the limit position under the action of the tension spring 513 (the limit post 591 abuts against the inner wall of the limit groove 5151 to achieve the limit); at the same time, the outer slider 59 will drive the inner sliding housing 510 to move forward together, and during the forward movement, the spline shaft 57 can move forward in the sliding groove; since the shape of the limit groove 5151 is an elliptical shape (see reference). Figure 5 The position where the limiting groove 5151 is connected to the rotating column is eccentric. Therefore, the initial position of the outer slider 59 can be changed by rotating the adjustment turntable 515. In addition, a notch 5152 is provided at the edge of the limiting groove 5151. When the adjustment turntable 515 is rotated, under the force of the tension spring 513, the limiting column 591 can be locked in the corresponding notch 5152. Therefore, the user can clearly feel that the current gear is different.

[0045] Meanwhile, a base is set at the bottom of the adjustment dial 515, and a display window is opened on the base; the bottom of the adjustment dial 515 is set with corresponding gear markings. When the adjustment dial 515 is rotated to the corresponding gear, the gear markings will be aligned with the display window, so the user can know the current gear and make it easy to adjust.

[0046] In this application, the handle portion 2 is provided with a first air passage 24 communicating with the internal cavity of the polishing machine housing 1, and the handle portion 2 is provided with a plurality of air inlets 23 communicating with the interior of the handle portion 2. Since the polishing machine in this application is generally used to polish sealing wheels in the beverage industry, some beverage liquid is inevitably present on the sealing wheel. Therefore, by driving the motor 12 at high speed, external air is introduced into the handle portion 2 through the air inlets 23, and then enters the internal cavity of the polishing machine housing 1 through the first air passage 24. The gas can overflow through the gaps between the various bearings and components, which plays a certain role in waterproofing.

[0047] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A handheld sealing wheel polishing machine, characterized in that: The device includes a drive motor, a battery, a control circuit board, a polishing housing, a push-pull device, a polishing wheel assembly for cleaning the side of a sealing wheel, a power wheel assembly for rotating the sealing wheel, and a handle portion located at one end of the polishing housing. The drive motor, battery, and control circuit board are all housed within the handle portion, and the push-pull device is located on the surface of the handle portion. The power wheel assembly is movably mounted on the surface of the polishing housing, and the polishing wheel assembly is located between two power wheel assemblies. A push-pull portion is provided at the end of each power wheel assembly, and the push-pull device is connected to the push-pull portion, causing the two power wheel assemblies to move away from or towards each other. The drive motor drives both the power wheel assembly and the polishing wheel assembly. The polishing wheel assembly includes a polishing wheel and a first drive shaft located inside the polishing machine housing. The top of the first drive shaft extends to the surface of the polishing machine housing and is connected to the polishing wheel. A first drive gear is sleeved on the bottom of the first drive shaft. Each power wheel assembly includes a power swing housing, a power wheel, a third drive gear, a drive belt, a power wheel shaft, and a second drive shaft arranged parallel to the first drive shaft and located inside the polishing machine housing. A second drive gear is sleeved on the bottom of the second drive shaft. The first drive gear meshes with two second drive gears. The second drive shaft extends into the power swing housing and is connected to the third drive gear. The drive belt is sleeved on the third drive gear and the power wheel shaft. The power wheel shaft extends out of the power swing housing and is connected to the power wheel. The bottom of the power swing housing is movably disposed on the surface of the polishing machine housing. The tail of the power swing housing is integrally formed with a push-pull part. The push-pull device is connected to the push-pull part and causes the two power wheels on both sides to move closer or further apart. The output shaft of the drive motor is driven and connected to a first bevel gear sleeved on the first drive shaft, which drives the polishing wheel located at the top of the first drive shaft to rotate. At the same time, the first drive shaft drives the second drive shafts on both sides to rotate. The push-pull device includes a sleeve, a push rod, and a push-pull block; the surface of the handle is provided with two bearing seats, wherein the two ends of the sleeve are movably mounted on the two bearing seats through bearings, and the inner wall of the sleeve is provided with internal threads, and the outer wall of the push rod is provided with external threads, wherein the push rod is fitted with the internal threads of the sleeve through the external threads, wherein the end of the push rod is connected to the push-pull block, and the push-pull block is provided with a notch for the push-pull part to pass through.

2. The handheld sealing wheel polishing machine according to claim 1, characterized in that: The surface of the polishing machine housing is provided with two limiting plates, and the two limiting plates form a push-pull slide rail in the same axis as the push rod. The push-pull block is set in the push-pull slide rail and moves along the push-pull slide rail.

3. The handheld sealing wheel polishing machine according to claim 1, characterized in that: A lifting assembly is also provided at the front end of the polishing machine housing. The lifting assembly includes a lifting platform, an adjusting screw, and an adjusting nut threaded onto the adjusting screw. The end of the adjusting screw located inside the polishing machine housing extends to the surface of the polishing machine housing and is fitted with the lifting platform. Adjusting notches are provided on both sides of the polishing machine housing for the adjusting nut to pass through, with the adjusting nut located at the adjusting notch.

4. A handheld sealing wheel polishing machine according to claim 1, characterized in that: It is also equipped with a front-end power wheel assembly, which includes a front-end power housing, a front-end power wheel, a front-end power shaft, a second bevel gear, and a third transmission shaft. The front-end power housing is mounted on the front end of the polishing machine housing. One end of the front-end power shaft, which is located inside the front-end power housing, extends out of the front-end power housing and is mounted on the front-end power wheel. The second bevel gear is sleeved on the front-end power shaft. The two ends of the third transmission shaft mesh with the first bevel gear and the second bevel gear, respectively, so that the first bevel gear and the second bevel gear can be driven.

5. A handheld sealing wheel polishing machine according to claim 4, characterized in that: The front-end power housing includes a sliding housing that is slidably mounted on the front end of the polishing housing and a front-end housing integrally formed on the front end of the sliding housing; The front drive shaft is located inside the front housing, and the third drive shaft is located inside the sliding housing. The sliding outer shell includes a mounting sleeve, and a spring receiving cavity is provided between the mounting sleeve and the inner wall of the sliding outer shell. A return spring, fitted outside the mounting sleeve, is installed in this spring receiving cavity. The sliding outer shell also has first sliding notches extending along its length on both sides. A spring clip is also fitted to the front end of the polishing machine housing, fixed to the front end and extending into the spring receiving cavity. One end of the return spring abuts against the spring clip. The third drive shaft includes a first bevel gear shaft, a spline shaft, a short shaft, and a second bevel gear shaft. The first bevel gear shaft meshes with a first bevel gear. The first bevel gear shaft is movably mounted in the polishing machine housing via a bearing, and a sliding groove extending along its own length is provided in the first bevel gear shaft. One end of the spline shaft is fitted in the sliding groove, and the other end of the spline shaft has a threaded groove extending along its own length. The outer surface of one end of the short shaft is provided with an external thread, and the short shaft is threaded in the threaded groove through its own external thread. The other end of the short shaft is movably fitted with a mounting sleeve via a bearing. The other end of the short shaft continues to extend and meshes with the second bevel gear via the second bevel gear shaft, and the second bevel gear is fitted with the front power housing via several first one-way bearings.

6. A handheld sealing wheel polishing machine according to claim 5, characterized in that: An outer slider is also provided, which is slidably mounted on the front end of the polishing machine housing, and the sliding outer shell is slidably mounted inside the outer slider; a spring clip is fixed to the front end of the outer slider; a rotating column is provided at the bottom of the polishing machine housing, and an adjusting turntable is movably mounted on the rotating column. The surface of the adjusting turntable is provided with a limiting groove, and a limiting post is provided at the bottom of the outer slider, wherein the limiting post passes through the second sliding notch located at the bottom of the sliding outer shell and extends into the limiting groove; a tension spring and a tension push rod are also provided inside the polishing machine housing. The end of the tension push rod is pressed against the side of the outer slider under the action of the tension spring, so that the limiting post of the outer slider abuts against the inner wall of the limiting groove.

7. A handheld sealing wheel polishing machine according to claim 6, characterized in that: A base is provided at the bottom of the adjustment dial, and a display window is provided on the base; the bottom of the adjustment dial is provided with corresponding gear markings.

8. A handheld sealing wheel polishing machine according to claim 1, characterized in that: The handle has a first air passage that communicates with the internal cavity of the polishing machine housing, and the handle has several air inlets that communicate with the inside of the handle.

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