Clamping device and precious metal bracelet polishing machine

Abstract

The application relates to the technical field of precious metal bracelet polishing machines, in particular to a clamping device and a precious metal bracelet polishing machine, the clamping device comprising a movable wheel assembly, a synchronous driving mechanism, a support frame, a supporting roller, a driving mechanism and a tightening mechanism, the number of the movable wheel assemblies is at least three, each movable wheel assembly is connected with the synchronous driving mechanism, the supporting roller is rotatably installed on the support frame, the driving mechanism comprises a rotary driving piece and a transmission belt, the transmission belt is connected with the rotary driving piece, the supporting roller and each movable wheel assembly, the tightening mechanism is arranged between the synchronous driving mechanism and the driving mechanism, the tightening mechanism comprises a position driving assembly and a tensioning wheel connected with the position driving assembly, and the tensioning wheels are in abutment with the transmission belt. The clamping device can control the simultaneous rotation of each movable wheel assembly through the tightening mechanism, can effectively reduce the mutual friction between the movable wheel assembly and the bracelet, can effectively control the uniform rotation of the bracelet, and can improve the polishing effect of the bracelet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precious metal bracelet polishing machines, in particular to a clamping device and a precious metal bracelet polishing machine. BACKGROUND

[0002] In the process of polishing, the precious metal bracelet needs to be controlled to rotate so that the rotating precious metal bracelet contacts the polishing piece, thereby achieving polishing of the surface of the bracelet. The patent for invention with publication number CN218312748U discloses a precious metal bracelet polishing machine, which controls the movement of each jaw through the chuck seat to drive each mounting mechanism to install the bracelet, and then controls the rotation of the mounting wheel of the mounting mechanism through the driving assembly, thereby driving the bracelet to rotate. However, in the precious metal bracelet polishing machine, the driving assembly controls each mounting wheel to drive the bracelet to rotate, which is difficult to effectively control the synchronous rotation of each mounting wheel. The mounting wheels with different rotating speeds are prone to mutual friction with the bracelet, making it difficult for the bracelet to rotate at a constant speed, and there is a technical problem of poor polishing effect of the bracelet. SUMMARY

[0003] Therefore, it is necessary to provide a clamping device and a precious metal bracelet polishing machine to solve the problem that the mounting wheels with different rotating speeds are prone to mutual friction with the bracelet, making it difficult for the bracelet to rotate at a constant speed, and there is a technical problem of poor polishing effect of the bracelet.

[0004] A clamping device comprises a driving wheel assembly, a synchronous driving mechanism, a support frame, a support roller, a driving mechanism, and a tightening mechanism. The number of driving wheel assemblies is at least three, and each driving wheel assembly is connected with the synchronous driving mechanism. The synchronous driving mechanism drives each driving wheel assembly to move closer to or away from each other. The support frame is arranged at intervals with the synchronous driving mechanism. The support roller is rotatably installed on the support frame. The driving mechanism comprises a rotary driving member and a transmission belt. The transmission belt is connected with the rotary driving member, the support roller, and each driving wheel assembly. The tightening mechanism is arranged between the synchronous driving mechanism and the driving mechanism. The tightening mechanism comprises a position driving assembly and a tensioning roller connected with the position driving assembly. The number of tensioning rollers is two, and each tensioning roller is in abutment with the transmission belt. The position driving assembly drives each tensioning roller to move closer to or away from each other.

[0005] In one embodiment, the driving wheel assembly comprises a limiting piece and a support shaft. The limiting piece is provided with an annular groove and is rotatably arranged on the support shaft. The support shaft is connected with the synchronous driving mechanism.

[0006] In one embodiment, the driving wheel assembly further comprises a first synchronous wheel connected with the limiting piece. The transmission belt is in transmission connection with the first synchronous wheel.

[0007] In one embodiment, the inner wall of the annular groove is provided with an anti-skid strip.

[0008] In one of the embodiments, the position driving assembly comprises a tension driving member and an adapter, and the tension wheel is mounted on the adapter.

[0009] In one of the embodiments, the tension driving member and the synchronous driving mechanism are both air cylinders, the air inlet of the tension driving member is communicated with the air outlet of the synchronous driving mechanism, and the air outlet of the tension driving member is communicated with the air inlet of the synchronous driving mechanism.

[0010] In one of the embodiments, the adapter is provided with a plurality of mounting holes, and the tension wheel is detachably connected with any one of the mounting holes.

[0011] In one of the embodiments, the tension wheel comprises a rotating wheel and a fixed shaft, the rotating wheel is rotatably mounted on the fixed shaft, and the fixed shaft is connected with the adapter.

[0012] In one of the embodiments, the rotating wheel is provided with a limiting groove, and the limiting groove is annular.

[0013] The beneficial effect of the clamping device is that the rotating driving member of the driving mechanism drives the transmission belt to control the simultaneous rotation of the at least three rotating wheel assemblies, when the synchronous driving mechanism drives the rotating wheel assemblies to approach or move away from each other, the position driving assembly of the tightening mechanism controls the simultaneous approach or movement away from each other of the tension wheels, so that when the synchronous driving mechanism controls the rotating wheel assemblies to be at different positions, the driving mechanism can control the simultaneous rotation of the rotating wheel assemblies through the tightening mechanism, which can effectively reduce the mutual friction between the rotating wheel assemblies and the bracelet, thereby effectively controlling the uniform rotation of the bracelet and achieving the purpose of improving the polishing effect of the bracelet.

[0014] A precious metal bracelet polishing machine comprises the clamping device of any one of the above.

[0015] The beneficial effect of the precious metal bracelet polishing machine is that the above clamping device is adopted, which is beneficial to effectively control the uniform rotation of the bracelet and achieve the purpose of improving the polishing effect of the bracelet. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of the clamping device of the present application;

[0017] Figure 2 FIG. 2 is a structural schematic diagram of the A part of the clamping device of the present application; Figure 1

[0018] Figure 3 FIG. 3 is a structural schematic diagram of the rotating wheel assembly of the clamping device of the present application; Figure 1

[0019] Figure 4 FIG. 4 is a structural schematic diagram of the tightening mechanism of the clamping device of the present application. Figure 1

[0020] ​​​The meanings of the reference numbers in the drawings are as follows:

[0021] 100, clamping device; 10, driving wheel assembly; 11, limiting piece; 111, annular groove; 112, anti-skid strip; 12, supporting shaft; 13, first synchronous wheel; 20, synchronous driving mechanism; 30, supporting frame; 40, supporting roller; 50, driving mechanism; 51, rotating driving piece; 52, transmission belt; 53, second synchronous wheel; 60, tightening mechanism; 61, position driving assembly; 611, tensioning driving piece; 612, adapter; 613, mounting hole; 62, tensioning wheel; 621, rotating wheel; 622, fixed shaft; 623, limiting groove. DETAILED DESCRIPTION

[0022] In order to make the above objectives, characteristics and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the descriptions of the present application are merely intended to be illustrative and that changes can be made to the description without departing from the spirit of the present application.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and "fixedly" should be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the present application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0028] As shown in Figure 1 , it is a clamping device 100 shown in the present application.

[0029] As shown in Figure 1 , the clamping device 100 comprises: a plurality of movable wheel assemblies 10 for mounting a bracelet, a synchronous driving mechanism 20 for controlling the movement of each movable wheel assembly 10, a support frame 30 for mounting the support roller 40, a driving mechanism 50 for controlling the rotation of each movable wheel assembly 10, and a tightening mechanism 60 for controlling the driving mechanism 50 and each movable wheel assembly 10 to maintain transmission connection.

[0030] In the following, the clamping device 100 described above will be further described in conjunction with Figures 1 to 4 .

[0031] As shown in Figure 1As shown, the number of the movable wheel assemblies 10 is at least three, and each movable wheel assembly 10 is connected with the synchronous driving mechanism 20, and each movable wheel assembly 10 is driven to move closer to or away from each other by the synchronous driving mechanism 20. By using at least three movable wheel assemblies 10, the installation stability of the bracelet can be effectively improved. When the number of the movable wheel assemblies 10 is three, the bracelet can be effectively installed by each movable wheel assembly 10 by fixing three points at the edge of the bracelet, thereby avoiding the bracelet from being separated from the rolling position. When the number of the movable wheel assemblies 10 is more than three, more movable wheel assemblies 10 can further improve the installation stability of the bracelet during installation, but will occupy the space of the edge of the bracelet, thereby reducing the contact space of the edge of the bracelet, thereby increasing the processing difficulty of the bracelet. In this embodiment, the number of the movable wheel assemblies 10 is three.

[0032] Specifically, as shown in the figure, Figure 3 The movable wheel assembly 10 includes a limiting piece 11 and a support shaft 12, the limiting piece 11 is provided with an annular groove 111 and is rotatably arranged on the support shaft 12 through a bearing, the support shaft 12 is connected with the synchronous driving mechanism 20, and the driving mechanism 50 drives the limiting piece 11 to rotate.

[0033] More specifically, the inner wall of the annular groove 111 is provided with an anti-skid strip 112, which increases the friction between the limiting piece 11 and the bracelet, thereby avoiding the bracelet from slipping during polishing, and achieving the purpose of improving the polishing effect of the bracelet. It can be understood that the anti-skid strip 112 can be replaced by an anti-skid groove, thereby increasing the friction between the limiting piece 11 and the bracelet.

[0034] Further, as shown in the figure, Figure 1 The movable wheel assembly 10 further includes a first synchronous wheel 13, the first synchronous wheel 13 is connected with the limiting piece 11, and the driving mechanism 50 is in transmission connection with the first synchronous wheel 13. The power transmission through the first synchronous wheel 13 is beneficial to improve the driving effect of the driving mechanism 50 on the limiting piece 11, and reduce the phenomenon of slipping of the limiting piece 11 during rotation.

[0035] As shown in the figure, Figure 1 The synchronous driving mechanism 20 is connected with the support shaft 12 of each movable wheel assembly 10. The synchronous driving mechanism 20 is a pneumatic cylinder. When the number of the movable wheel assemblies 10 is three, the synchronous driving mechanism 20 is a three-grip pneumatic cylinder. When the number of the movable wheel assemblies 10 is four, the synchronous driving mechanism 20 is a four-grip pneumatic cylinder.

[0036] The inner edge of the bracelet can be fixed by the movable wheel assembly 10 through the synchronous driving mechanism 20, or the outer edge of the bracelet can be fixed by the movable wheel assembly 10, when the bracelet is fixed, different fixing methods can be selected according to the bracelet with different diameters, so that the clamping device 100 can fix the bracelet with different diameters. When the inner edge of the bracelet is fixed, the movable wheel assemblies 10 are controlled to move close to each other by the synchronous driving mechanism 20, after the bracelet is sleeved on the movable wheel assemblies 10, the movable wheel assemblies 10 are controlled to move away from each other by the synchronous driving mechanism 20, so as to support the inner edge of the bracelet, thereby achieving the fixation of the bracelet. When the outer edge of the bracelet is fixed, the movable wheel assemblies 10 are controlled to move away from each other by the synchronous driving mechanism 20, the bracelet is placed between the movable wheel assemblies 10, and the movable wheel assemblies 10 are controlled to move close to each other by the synchronous driving mechanism 20, so as to clamp the outer edge of the bracelet, thereby achieving the fixation of the bracelet.

[0037] As shown in Figure 1 and Figure 2 The driving mechanism 50 includes a rotating driving part 51 and a transmission belt 52, the support frame 30 is arranged at intervals with the synchronous driving mechanism 20, the support roller 40 is rotatably installed on the support frame 30, and the transmission belt 52 is connected with the rotating driving part 51, the support roller 40 and each movable wheel assembly 10, that is, the transmission belt 52 is in transmission connection with the limiting part 11 or the first synchronous wheel 13 of each movable wheel assembly 10 under the support of the support roller 40, wherein the rotating driving part 51 is a motor, the rotating driving part 51 controls the synchronous rotation of each movable wheel assembly 10 through the transmission belt 52, which is beneficial to the rotation of each movable wheel assembly 10 to drive the bracelet to rotate, when any one movable wheel assembly 10 cannot provide power to the bracelet, the other movable wheel assemblies 10 can continue to drive the bracelet to rotate, thereby avoiding the situation that the bracelet is not polished sufficiently due to the stop of the rotation of the bracelet during polishing, and achieving the purpose of improving the rotation stability of the bracelet. Further, the driving mechanism 50 further includes a second synchronous wheel 53 connected with the rotating driving part 51.

[0038] As shown in Figure 4As shown, the tightening mechanism 60 is arranged between the synchronous driving mechanism 20 and the driving mechanism 50, the tightening mechanism 60 comprises a position driving assembly 61 and a tensioning wheel 62 connected with the position driving assembly 61, the number of the tensioning wheel 62 is two, each tensioning wheel 62 abuts against the transmission belt 52, and the position driving assembly 61 drives each tensioning wheel 62 to move close to or away from each other. Specifically, the position driving assembly 61 comprises a tensioning driving part 611 and an adapter 612, and the tensioning wheel 62 is installed on the adapter 612, wherein the tensioning driving part 611 is a gas cylinder, specifically, the tensioning driving part 611 is a two-jaw gas cylinder, when the tensioning driving part 611 and the synchronous driving mechanism 20 are both gas cylinders, the gas inlet of the tensioning driving part 611 is communicated with the gas outlet of the synchronous driving mechanism 20, and the gas outlet of the tensioning driving part 611 is communicated with the gas inlet of the synchronous driving mechanism 20. By the tensioning driving part 611 and the synchronous driving mechanism 20 which are both gas cylinders, the synchronous driving of the tensioning driving part 611 and the synchronous driving mechanism 20 can be realized through one gas circuit, thereby reducing the extrusion force of the transmission belt 52 during the driving process of the tensioning driving part 611 and the synchronous driving mechanism 20, avoiding the damage of the transmission belt 52 due to the large extrusion force, and achieving the purpose of improving the service life of the transmission belt 52.

[0039] Specifically, as shown in the figure, Figure 4 The tensioning wheel 62 comprises a rotating wheel 621 and a fixed shaft 622, the rotating wheel 621 is rotatably installed on the fixed shaft 622 through a bearing, the fixed shaft 622 is connected with the adapter 612, further, the adapter 612 is provided with a plurality of mounting holes 613, the fixed shaft 622 of the tensioning wheel 62 is detachably connected with any one of the mounting holes 613, by providing a plurality of mounting holes 613 on the adapter 612, the tensioning wheel 62 can be installed on the adapter 612 by selecting any one of the mounting holes 613, and the position of the tensioning wheel 62 on the adapter 612 can be adjusted to make the tensioning wheel 62 contact with the transmission belt 52, thereby achieving the purpose of improving the application range of the tightening mechanism 60.

[0040] Further, the rotating wheel 621 is provided with a limiting groove 623, the limiting groove 623 is annular, and the transmission belt 52 can be prevented from being separated from the rotating wheel 621 through the limiting groove 623, so as to maintain the tensioning effect of the rotating wheel 621 on the transmission belt 52.

[0041] The above-mentioned clamping device 100, by the position driving assembly 61 of the tightening mechanism 60 controlling each tensioning wheel 62 to move close to or away from each other at the same time, when the synchronous driving mechanism 20 controls each driving wheel assembly 10 to be at different positions, the driving mechanism 50 can control each driving wheel assembly 10 to rotate at the same time through the tightening mechanism 60, thereby effectively reducing and avoiding the mutual friction between the driving wheel assembly 10 and the bracelet, controlling the uniform rotation of the bracelet, and improving the polishing effect of the bracelet.

[0042] The precious metal bracelet polishing machine comprises the clamping device 100.

[0043] The precious metal bracelet polishing machine of the present application can effectively control the uniform rotation of the bracelet and improve the polishing effect of the bracelet by using the clamping device 100.

[0044] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application.

[0045] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A clamping device, characterized in that The application relates to a precious metal bracelet polishing machine, which comprises a rotating wheel assembly, a synchronous driving mechanism, a supporting frame, a supporting roller, a driving mechanism and a tightening mechanism. The rotating wheel assembly comprises a limiting piece and a supporting shaft, the limiting piece is provided with an annular groove and is rotationally arranged on the supporting shaft, the supporting shaft is connected with the synchronous driving mechanism, the adapter is provided with a plurality of mounting holes, and the tensioning wheel is detachably connected with any one of the mounting holes.

2. The card retention device of claim 1, wherein The rotating wheel assembly further comprises a first synchronous wheel, the first synchronous wheel is connected with the limiting piece, and the transmission belt is in transmission connection with the first synchronous wheel.

3. The card retention device of claim 1, wherein An anti-skid strip is arranged on the inner wall of the annular groove.

4. The card retention device of claim 1, wherein The tensioning wheel comprises a rotating wheel and a fixing shaft, the rotating wheel is rotationally arranged on the fixing shaft, and the fixing shaft is connected with the adapter.

5. The card retention device of claim 4, wherein The rotating wheel is provided with a limiting groove, and the limiting groove is annular.

6. A precious metal bracelet polishing machine, comprising the clamping device of any one of claims 1 to 5.

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