Bottle cap measuring device

Abstract

The utility model relates to the technical field of vision measurement, in particular to a bottle cap measuring device. The bottle cap measuring device comprises a base, a reflective mirror, a clamping assembly and a measuring assembly, the reflective mirror is fixed to the base, the mirror surface of the reflective mirror inclines by 45 degrees relative to the horizontal plane, the clamping assembly is arranged on the base and arranged on one side of the inclined direction of the reflective mirror, and the clamping assembly comprises a first clamping piece and a second clamping piece which are oppositely arranged; the bottle cap is arranged between the first clamping piece and the second clamping piece, any one of the first clamping piece and the second clamping piece can move oppositely or oppositely relative to the other one, a positioning structure is arranged on the other one of the first clamping piece and the second clamping piece, and the positioning structure and the bottle cap can be positioned in the radial direction. The measuring assembly is used for measuring the radial size and the axial size of the bottle caps, stable clamping of the bottle caps with different diameters can be achieved, the bottle caps can be prevented from rotating in the axial direction of the bottle caps, and the consistency of clamping and positioning of the bottle caps is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of visual measurement, in particular to a bottle cap measuring device. Background Art

[0002] In the production process of bottled beverages, anti-theft caps are required to ensure the sealing inside the bottle body. In the production process of the anti-theft caps, the specific specifications and dimensions of the anti-theft caps need to be measured to ensure that the anti-theft caps are installed and adapted to the bottle body.

[0003] In the related art, in order to measure the size of the anti-theft cap, the bottle cap needs to be clamped on a fixture. Since the bottle cap is cylindrical, the clamping and fixing method of the existing fixture is difficult to ensure that the bottle cap will not rotate along its axis when clamping the cylindrical bottle cap. The different fixing positions of the bottle cap affect the subsequent dimensional measurement accuracy of the bottle cap. Moreover, when measuring bottle caps of different diameters, the fixture needs to be replaced repeatedly to ensure that the fixture can stably clamp and fix bottle caps of different diameters. The operation is cumbersome, resulting in low subsequent measurement efficiency.

[0004] Therefore, it is urgent to invent a bottle cap measuring device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a bottle cap measuring device to meet the clamping and measuring requirements for bottle caps with different diameters, with simple operation and good clamping and fixing effect.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Bottle cap measuring device, comprising:

[0008] Pedestal;

[0009] A reflector, fixed on the base, wherein the mirror surface of the reflector is inclined at 45° relative to the horizontal plane;

[0010] A clamping assembly is arranged on the base, the clamping assembly is arranged on one side of the inclination direction of the reflector, the clamping assembly includes a first clamping member and a second clamping member arranged opposite to each other, the bottle cap is arranged between the first clamping member and the second clamping member, any one of the first clamping member and the second clamping member can move toward or away from the other, and a positioning structure is arranged on the other of the two, and the positioning structure can be radially positioned with the bottle cap; and

[0011] A measuring component is used to measure the radial dimension and axial dimension of the bottle cap.

[0012] As an optional solution, the first clamping member includes:

[0013] A main body, arranged opposite to the second clamping member;

[0014] The telescopic part is provided with a receiving hole on the main body and extends in the direction in which the first clamping member and the second clamping member are relatively arranged. The telescopic part is received in the receiving hole and can move along the receiving hole relative to the second clamping member.

[0015] As an optional solution, the first clamping member further includes:

[0016] a connecting structure, wherein an output end of the connecting structure is connected to the telescopic portion; and

[0017] An adjusting knob is connected to the input end of the connecting structure, and is used to drive the telescopic portion to move toward or away from the second clamping member.

[0018] As an optional solution, a positioning protrusion is provided at one end of the second clamping member close to the first clamping member, and the positioning protrusion is the positioning structure. A plurality of anti-slip protrusions are arranged at intervals on the outer peripheral wall of the bottle cap, and an avoidance area is provided on any one of the plurality of anti-slip protrusions, and the positioning protrusion is docked with the avoidance area for positioning.

[0019] As an optional solution, the bottle cap measuring device further includes:

[0020] A blackout curtain is fixed on the reflector, and the blackout curtain can block the reflector.

[0021] As an optional solution, the blackout curtain includes:

[0022] A curtain piece capable of covering the mirror surface of the reflector;

[0023] A winding roller, one end of the curtain piece is connected and fixed to the winding roller;

[0024] A driving member, wherein the output end of the driving member is connected to the winding roller, and the driving member is used to drive the winding roller to rotate along the center axis of the winding roller.

[0025] As an optional solution, the blackout curtain further includes:

[0026] A protective cover is arranged on the outer periphery of the winding roller.

[0027] As an optional solution, the blackout curtain further includes:

[0028] A guide rail extending along a direction of rolling up and unfolding the curtain sheet; and

[0029] A slider is fixed on the curtain piece, and the slider is slidably matched with the guide rail.

[0030] As an optional solution, the measuring component includes:

[0031] A lighting lamp, wherein the lighting lamp illuminates the bottle cap from the upper end and the lower end of the bottle cap respectively; and

[0032] A measuring camera is used to photograph the bottle cap and the reflector.

[0033] As an optional solution, the bottle cap measuring device is provided with multiple groups of the clamping components, multiple groups of the measuring components and multiple mirrors, and the multiple mirrors are fixed on the base at intervals in the horizontal and vertical directions, and each of the reflectors is arranged corresponding to a group of the clamping components and a group of the measuring components.

[0034] Beneficial effects of the utility model:

[0035] The bottle cap measuring device provided by the utility model arranges a reflector on a base so that the mirror surface of the reflector is inclined 45 degrees relative to a horizontal plane, and arranges a clamping assembly on one side of the reflector's inclination direction in the base, so that the reflector can be used to improve the measuring accuracy of the measuring assembly on the bottle cap on the clamping assembly, and the bottle cap is arranged between a first clamping member and a second clamping member so that any one of the first clamping member and the second clamping member can move toward or away from the other, thereby realizing stable clamping of bottle caps of different diameters, and has a simple structure, an easy-to-use operation method, and a high clamping efficiency; and a positioning structure is arranged on the other of the first clamping member and the second clamping member so that the positioning structure can be radially positioned with the bottle cap, so that the bottle cap can be prevented from rotating along its own axial direction, and the clamping and positioning consistency of each bottle cap can be ensured, so that not only the subsequent measurement accuracy can be ensured, but also the measurement efficiency of the specific specifications and sizes of the bottle cap can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the bottle cap measuring device and the bottle cap provided in the embodiment of the utility model;

[0037] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0038] Figure 3 It is a structural schematic diagram of a bottle cap measuring device provided by an embodiment of the utility model;

[0039] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0040] Figure 5 It is a schematic diagram of the structure of a bottle cap provided by an embodiment of the utility model.

[0041] In the figure:

[0042] 1000. Bottle cap measuring device;

[0043] 100, clamping assembly; 110, first clamping member; 111, main body; 1111, accommodating through hole; 112, adjusting knob; 113, telescopic portion; 120, second clamping member; 121, positioning protrusion;

[0044] 200. Blackout curtains;

[0045] 300, reflector;

[0046] 400, base; 410, 45° inclined boss;

[0047] 2000. Bottle cap; 2100. Anti-slip protrusion; 2110. Avoidance area. DETAILED DESCRIPTION

[0048] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0049] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0052] In the related art, in order to measure the size of the anti-theft cap, the bottle cap needs to be clamped on a fixture. Since the bottle cap is cylindrical, the clamping and fixing method of the existing fixture is difficult to ensure that the bottle cap will not rotate along its axis when clamping the cylindrical bottle cap. The different fixing positions of the bottle cap affect the subsequent dimensional measurement accuracy of the bottle cap. Moreover, when measuring bottle caps of different diameters, the fixture needs to be replaced repeatedly to ensure that the fixture can stably clamp and fix bottle caps of different diameters. The operation is cumbersome, resulting in low subsequent measurement efficiency.

[0053] In order to solve the above problems, Figure 1 to Figure 4 As shown, this embodiment provides a bottle cap measuring device 1000. The bottle cap measuring device 1000 includes a base 400, a reflector 300, a clamping assembly 100 and a measuring assembly, wherein the reflector 300 is fixed on the base 400, the mirror surface of the reflector 300 is inclined 45° relative to the horizontal plane, the clamping assembly 100 is arranged on the base 400, and the clamping assembly 100 is arranged on one side of the inclined direction of the reflector 300, the clamping assembly 100 includes a first clamping member 110 and a second clamping member 120 arranged opposite to each other, the bottle cap 2000 is arranged between the first clamping member 110 and the second clamping member 120, any one of the first clamping member 110 and the second clamping member 120 can move toward or away from the other, the other of the two is provided with a positioning structure, and the positioning structure can be radially positioned with the bottle cap 2000, and the measuring assembly is used to measure the radial size and axial size of the bottle cap 2000.

[0054] The bottle cap measuring device 1000 is provided with a reflector 300 on a base 400, so that the mirror surface of the reflector 300 is inclined at 45° relative to a horizontal plane, and the clamping assembly 100 is provided on one side of the base 400 in the inclination direction of the reflector 300, so that the reflector 300 can be used to improve the measurement accuracy of the measuring assembly for the bottle cap 2000 on the clamping assembly 100, and the bottle cap 2000 is provided between the first clamping member 110 and the second clamping member 120, so that either the first clamping member 110 or the second clamping member 120 can be relative to the bottle cap 2000. The other one moves towards or away from each other, so that stable clamping of bottle caps 2000 with different diameters can be achieved, with a simple structure, easy operation and high clamping efficiency; by providing a positioning structure on the other of the first clamping member 110 and the second clamping member 120, the positioning structure can be radially positioned with the bottle cap 2000, which can prevent the bottle cap 2000 from rotating along its own axial direction, thereby ensuring the consistency of clamping and positioning of each bottle cap 2000, which can not only ensure the subsequent measurement accuracy, but also improve the measurement efficiency of the specific specifications and dimensions of the bottle cap 2000.

[0055] It should be noted that, in this embodiment, a 45° inclined boss 410 is provided on the base 400, and the upper end surface of the 45° inclined boss 410 is inclined at 45° relative to the horizontal plane, and the reflector 300 is fixed on the upper end surface of the 45° inclined boss 410, so the mirror surface of the reflector 300 can be inclined at 45° relative to the horizontal plane. In other embodiments, a mounting frame inclined at 45 degrees relative to the horizontal plane can also be provided on the base 400, and the reflector 300 is fixed on the mounting frame, which is not specifically limited in this embodiment.

[0056] In addition, in order to further improve the measurement efficiency of the bottle cap 2000, a plurality of clamping components 100, a plurality of measuring components and a plurality of reflectors 300 are provided in the bottle cap measuring device 1000. The plurality of reflectors 300 are fixed on the base 400 at intervals in the horizontal and vertical directions. Each reflector 300 is provided corresponding to a clamping component 100 and a measuring component.

[0057] It should be noted that, in this embodiment, the bottle cap measuring device 1000 is provided with 60 groups of clamping assemblies 100, 60 groups of measuring assemblies and 60 reflectors 300, and the base 400 is provided with 60 45° inclined bosses 410, and the 60 45° inclined bosses 410 are arranged in groups of ten along the horizontal interval, and the 60 45° inclined bosses 410 are divided into six groups, and the six groups of 45° inclined bosses 410 are arranged along the longitudinal interval, and each 45° inclined boss 410 is arranged corresponding to a group of clamping assemblies 100, a group of measuring assemblies and a reflector 300. In other embodiments, the specific number of clamping assemblies 100, measuring assemblies, reflectors 300 and 45° inclined bosses 410 can also be adjusted according to actual needs, and this embodiment does not make specific restrictions.

[0058] Combination Figure 2 and Figure 4 The specific structure of the first clamping member 110 is described. The first clamping member 110 includes a main body 111 and a telescopic portion 113, wherein the main body 111 is arranged opposite to the second clamping member 120, and the main body 111 is provided with an accommodating through hole 1111 extending along the direction in which the first clamping member 110 and the second clamping member 120 are arranged opposite to each other, and the telescopic portion 113 is accommodated in the accommodating through hole 1111, and the telescopic portion 113 can move relative to the second clamping member 120 along the accommodating through hole 1111. By opening an accommodating through hole 1111 on the main body 111 and extending in the direction in which the first clamping member 110 and the second clamping member 120 are relatively arranged, the telescopic portion 113 is accommodated in the accommodating through hole 1111, so that the telescopic portion 113 can move along the accommodating through hole 1111 relative to the second clamping member 120. When the diameter of the bottle cap 2000 is reduced, the telescopic portion 113 can be driven to move along the accommodating through hole 1111 toward the second clamping member 120 to reduce the gap between the telescopic portion 113 and the second clamping member 120, and the telescopic portion 113 and the second clamping member 120 are used to clamp and fix the bottle cap 2000.

[0059] In order to further drive the telescopic part 113 to move along the accommodating through hole 1111, the first clamping member 110 further includes a connecting structure and an adjusting knob 112, wherein the output end of the connecting structure is connected to the telescopic part 113, the adjusting knob 112 is connected to the input end of the connecting structure, and the adjusting knob 112 is used to drive the telescopic part 113 to move toward or away from the second clamping member 120. By additionally providing a connecting structure, connecting the adjusting knob 112 to the input end of the connecting structure, and connecting the telescopic part 113 to the output end of the connecting structure, when it is necessary to drive the telescopic part 113 to move along the accommodating through hole 1111, the telescopic part 113 can be driven to move along the accommodating through hole 1111 by screwing the adjusting knob 112, and the transmission effect of the connecting structure can be used to drive the telescopic part 113 to move along the accommodating through hole 1111, which is convenient to operate. It should be noted that, in this embodiment, the connection structure can be a screw-nut structure, the adjusting knob 112 is connected and fixed to the screw, and the telescopic part 113 is connected and fixed to the nut. The screw is driven to rotate by the adjusting knob 112, and the rotation of the screw drives the nut to move linearly, thereby driving the telescopic part 113 connected and fixed to the nut to move linearly.

[0060] In addition, in order to further improve the clamping and fixing effect of the bottle cap 2000, in this embodiment, two accommodating through holes 1111 are arranged at intervals on the main body 111, each accommodating through hole 1111 is arranged corresponding to a telescopic portion 113, and the two telescopic portions 113 can simultaneously clamp and fix the bottle cap 2000 with the second clamping member 120. In other embodiments, the specific number of accommodating through holes 1111 in the main body 111 can also be adjusted according to actual needs, and it is only necessary to ensure that each accommodating through hole 1111 is arranged corresponding to a telescopic portion 113, and this embodiment does not make a specific limitation.

[0061] In an optional embodiment, since the bottle cap 2000 is cylindrical, in order to further improve the clamping effect of the bottle cap 2000, an inwardly recessed groove is provided at one end of the main body 111 close to the second clamping piece 120, and an inwardly recessed groove is provided at one end of the second clamping piece 120 close to the main body 111, and an arc surface is provided at one end of the telescopic portion 113 close to the second clamping piece 120, and the shape of the arc surface is the same as the shape of the groove on the main body 111, so as to achieve stable clamping of the cylindrical bottle cap 2000.

[0062] As an alternative, Figure 2 , Figure 4 as well as Figure 5As shown, a positioning protrusion 121 is provided at one end of the second clamping member 120 close to the main body 111, and the positioning protrusion 121 is a positioning structure. A plurality of anti-skid protrusions 2100 are provided at intervals on the outer peripheral wall of the bottle cap 2000, and an escape zone 2110 is provided on any one of the plurality of anti-skid protrusions 2100, and the plurality of positioning protrusions 121 are docked and positioned with the escape zone 2110. By providing the positioning protrusion 121 at one end of the second clamping member 120 close to the main body 111, and docking and fixing the positioning protrusion 121 with the escape zone 2110 provided on the bottle cap 2000, the radial positioning of the bottle cap 2000 can be achieved, and the bottle cap 2000 is prevented from rotating along its own centerline axis, and the structure is simple and the design is ingenious.

[0063] In the present embodiment, the measuring assembly includes a lighting lamp and a measuring camera, wherein the lighting lamp illuminates the bottle cap 2000 from the upper end and the lower end of the bottle cap 2000 respectively, and the measuring camera is used to shoot the bottle cap 2000 and the reflector 300. By using the lighting lamp to illuminate the bottle cap 2000 from the upper end and the lower end of the bottle cap 2000 respectively, it is possible to ensure that the measuring camera can shoot the bottle cap 2000, thereby improving the size measurement effect of the bottle cap 2000. It should be noted that the measuring method and measuring principle of the bottle cap 2000 by the measuring camera belong to the prior art and will not be repeated here. In addition, in the present embodiment, the measuring camera is a CCD camera (Charge Coupled Device). The CCD camera is compact, responsive, and has a good imaging effect. In other embodiments, the measuring camera can also be other types of cameras, which are not specifically limited in the present embodiment.

[0064] Specifically, when the radial dimension of the bottle cap 2000 needs to be measured, the measuring camera directly photographs the bottle cap 2000 from above the bottle cap 2000. When the axial dimension of the bottle cap 2000 needs to be measured, the measuring camera photographs the reflector 300 and measures the axial dimension of the bottle cap 2000 using the mirror imaging of the reflector 300.

[0065] When the measuring assembly performs radial measurement on the bottle cap 2000, the reflector 300 is disposed on one side of the bottle cap 2000. The end of the bottle cap 2000 close to the reflector 300 will be illuminated brighter by the lighting lamp under the action of the reflector 300, resulting in a large difference in brightness between the side of the bottle cap 2000 close to the reflector 300 and the other side. When the measuring camera performs shooting measurement, for measuring the radial size of the bottle cap 2000, 4 or 6 measuring points or arcs are usually taken along the outer edge of the bottle cap 2000, but due to the difference in brightness on both sides of the bottle cap 2000, different measuring points or arcs on the bottle cap 2000 cannot be captured at the same time.

[0066] In order to solve the above problem, in this embodiment, the bottle cap measuring device 1000 further includes a shading curtain 200, wherein the shading curtain 200 is fixed on the reflector 300, and the shading curtain 200 can block the reflector 300. When it is necessary to measure the radial dimension of the bottle cap 2000, the shading curtain 200 can be blocked on the mirror surface of the reflector 300 to prevent the reflector 300 from reflecting light onto the bottle cap 2000.

[0067] Specifically, the blackout curtain 200 includes a curtain piece, a winding roller, and a driving member, wherein the curtain piece can block the mirror surface of the reflector 300, one end of the curtain piece is connected and fixed to the winding roller, the output end of the driving member is connected to the winding roller, and the driving member is used to drive the winding roller to rotate along the center axis of the winding roller. When it is necessary to block the mirror surface of the reflector 300, the driving member drives the winding roller to rotate to unfold the curtain piece on the winding roller, and the unfolded curtain piece blocks the mirror surface of the reflector 300. When it is not necessary to block the mirror surface of the reflector 300, the driving member drives the winding roller to rotate in the opposite direction to roll up the unfolded curtain piece onto the winding roller.

[0068] Furthermore, the blackout curtain 200 further comprises a protective cover, wherein the protective cover is arranged on the periphery of the winding roller. By arranging the protective cover on the periphery of the winding roller, the winding roller and the curtain sheet wound on the winding roller can be protected to prevent dust and debris from falling on the curtain sheet.

[0069] In order to further improve the shielding effect of the curtain sheet on the reflector 300, the blackout curtain 200 further includes a guide rail and a slider, wherein the guide rail extends along the direction of the curtain sheet rolling and unfolding, the slider is fixed on the curtain sheet, and the slider and the guide rail are slidably matched. By providing a guide rail extending along the direction of the curtain sheet rolling and unfolding, and providing a slider on the curtain sheet, so that the slider and the guide rail are slidably matched, when the driving member drives the curtain sheet to roll up or unfold, the curtain sheet slider can slide along the guide rail to provide guidance for the rolling and unfolding of the curtain sheet, thereby ensuring the rolling and unfolding effect of the curtain sheet, and further ensuring the shielding effect of the curtain sheet on the reflector 300.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Bottle cap measuring device, characterized in that: include: Base (400); A reflector (300) is fixed on the base (400), and the mirror surface of the reflector (300) is inclined at 45° relative to the horizontal plane; A clamping assembly (100) is arranged on the base (400), the clamping assembly (100) is arranged on one side of the inclination direction of the reflector (300), the clamping assembly (100) comprises a first clamping member (110) and a second clamping member (120) which are arranged opposite to each other, the bottle cap (2000) is arranged between the first clamping member (110) and the second clamping member (120), any one of the first clamping member (110) and the second clamping member (120) can move towards or away from the other, and a positioning structure is arranged on the other of the two, and the positioning structure can be radially positioned with the bottle cap (2000); as well as A measuring assembly is used to measure the radial dimension and the axial dimension of the bottle cap (2000).

2. The bottle cap measuring device according to claim 1, characterized in that: The first clamping member (110) comprises: A main body (111) arranged opposite to the second clamping member (120); The telescopic portion (113) is provided with a receiving hole (1111) extending in the direction in which the first clamping member (110) and the second clamping member (120) are relatively arranged on the main body (111); the telescopic portion (113) is received in the receiving hole (1111); and the telescopic portion (113) can move along the receiving hole (1111) relative to the second clamping member (120).

3. The bottle cap measuring device according to claim 2, characterized in that: The first clamping member (110) further comprises: A connecting structure, wherein an output end of the connecting structure is connected to the telescopic portion (113); and An adjusting knob (112), the adjusting knob (112) being connected to the input end of the connecting structure, and the adjusting knob (112) being used to drive the telescopic portion (113) to move toward or away from the second clamping member (120).

4. The bottle cap measuring device according to any one of claims 1 to 3, characterized in that: A positioning protrusion (121) is provided at one end of the second clamping member (120) close to the first clamping member (110), and the positioning protrusion (121) is the positioning structure. A plurality of anti-slip protrusions (2100) are arranged at intervals on the outer peripheral wall of the bottle cap (2000), and an avoidance area (2110) is provided on any one of the plurality of anti-slip protrusions (2100), and the positioning protrusion (121) is docked and positioned with the avoidance area (2110).

5. The bottle cap measuring device according to claim 1, characterized in that: The bottle cap measuring device also includes: A blackout curtain (200) is fixed on the reflecting mirror (300), and the blackout curtain (200) can shield the reflecting mirror (300).

6. The bottle cap measuring device according to claim 5, characterized in that: The blackout curtain (200) comprises: A curtain piece capable of covering the mirror surface of the reflector (300); A winding roller, one end of the curtain piece is connected and fixed to the winding roller; A driving member, wherein the output end of the driving member is connected to the winding roller, and the driving member is used to drive the winding roller to rotate along the center axis of the winding roller.

7. The bottle cap measuring device according to claim 6, characterized in that: The blackout curtain (200) further comprises: A protective cover is arranged on the outer periphery of the winding roller.

8. The bottle cap measuring device according to claim 6, characterized in that: The blackout curtain (200) further comprises: A guide rail extending along a direction of rolling up and unfolding the curtain sheet; and A slider is fixed on the curtain piece, and the slider is slidably matched with the guide rail.

9. The bottle cap measuring device according to any one of claims 1 to 3, characterized in that: The measuring assembly comprises: a lighting lamp, the lighting lamp lighting the bottle cap (2000) from the upper end and the lower end of the bottle cap (2000) respectively; and A measuring camera, wherein the measuring camera is used to photograph the bottle cap (2000) and the reflector (300).

10. The bottle cap measuring device according to any one of claims 1 to 3, characterized in that: The bottle cap measuring device is provided with a plurality of groups of the clamping components (100), a plurality of groups of the measuring components and a plurality of the reflectors (300); the plurality of the reflectors (300) are fixed on the base (400) at intervals in the transverse and longitudinal directions; each of the reflectors (300) is provided corresponding to a group of the clamping components (100) and a group of the measuring components.

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