A rotary clamping mechanism for measurement

Abstract

This utility model belongs to the field of cigarette processing technology and discloses a rotary clamping mechanism for measurement, comprising: a mounting component; a turntable assembly disposed on the mounting component, the turntable assembly including an inner turntable and an outer turntable rotatably disposed outside the inner turntable, the inner turntable having a channel for the object to be measured to pass through; a clamping component disposed on the inner turntable, the clamping component including multiple rotatably disposed gripper components, the multiple gripper components being arranged in a circumferential array around the channel, the gripper components having a connecting end and being movably connected to the outer turntable through the connecting end; a driving component disposed on the mounting component; and an elastic pressing component. This utility model can facilitate the clamping component to clamp cigarettes or filter rods of different diameters, and can also drive the outer turntable to rotate after clamping, facilitating the measurement of length and / or circumference, thus having a wider range of applications.

Description

Technical Field

[0001] This utility model belongs to the field of cigarette processing technology, specifically relating to a rotary clamping mechanism for measurement. Background Technology

[0002] The physical parameters of cigarettes and filter rods are of great importance to both the cigarette manufacturing and usage processes.

[0003] Currently, a comprehensive testing platform is typically used for inspection. This platform includes modules such as a feeding module, a weight detection module, a circumference and length detection module, a suction resistance detection module, and a hardness detection module. When using the circumference and length detection module, a clamping mechanism is needed to hold the cigarette or filter rod, and the length and diameter are measured separately using a length measuring instrument and a circumference measuring instrument, respectively. However, existing rotary clamping mechanisms used for measurement have limited clamping specifications and fixed clamping force, making them unsuitable for products with different lengths and diameters. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a rotary clamping mechanism for measurement, so as to solve the problem that the existing rotary clamping mechanisms for measurement have a fixed clamping force and are not suitable for clamping products of different lengths and diameters.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rotary clamping mechanism for measurement, comprising:

[0007] Install components;

[0008] A turntable assembly mounted on the mounting component includes an inner turntable and an outer turntable rotatably disposed outside the inner turntable. The inner turntable is provided with a channel for the object to be measured to pass through.

[0009] The clamping assembly is provided on the inner turntable. The clamping assembly includes a plurality of rotatably arranged gripper components. The plurality of gripper components are arranged in a circumferential array on the periphery of the channel. The gripper components are provided with connecting ends and are movably connected to the outer turntable through the connecting ends.

[0010] A drive assembly disposed on the mounting member drives the inner turntable to rotate, thereby causing the clamping assembly to perform a clamping action; and

[0011] An elastic clamping component presses against the outer turntable, and the elastic clamping component applies a clamping force to the outer turntable.

[0012] In a possible implementation, the elastic clamping assembly includes an elastic telescopic member and a pressing member, the pressing member being disposed at the free end of the elastic telescopic member and pressing against the outer turntable.

[0013] In a possible implementation, the pressing member is radially pressed against the outer circumferential surface of the outer turntable by an elastic telescopic member, and the pressing member is a rotating pressing wheel.

[0014] In possible implementations, the elastic force of the elastic telescopic member is adjustable, or the elastic element on the elastic telescopic member can be replaced with an elastic element with a different elastic force.

[0015] In a possible implementation, the connecting end of the gripper component is connected to the outer turntable via a cam assembly. The cam assembly includes a connecting shaft, a cam, and a cam groove. The cam groove is radially disposed on the outer turntable. One end of the connecting shaft is connected to the cam that slides within the cam groove, and the other end of the connecting shaft is rotatably connected to the connecting end of the gripper component.

[0016] In a possible implementation, the inner turntable has a disc portion and a shaft portion connected to the disc portion. The shaft portion has a shaft hole that passes through the disc portion to form the channel. The shaft portion is rotatably engaged with the outer turntable and the mounting component. The drive assembly is drively connected to the shaft portion of the inner turntable to drive the inner turntable to rotate.

[0017] In a possible implementation, the drive assembly includes a drive motor, a first drive wheel, and a second drive wheel. The output shaft of the drive motor is connected to the first drive wheel, and the first drive wheel and the second drive wheel, which are coaxially connected to the shaft, are in a transmission engagement.

[0018] In a possible implementation, both the first and second transmission pulleys are toothed pulleys and are connected by a toothed synchronous belt.

[0019] In one possible implementation, the mounting component is provided with a sensing element, and the outer turntable is provided with a triggering component that cooperates with the sensing element. When the sensing element senses the triggering element, the clamping assembly is in an open state and the sensing element outputs a first signal.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The rotary clamping mechanism for measurement of this utility model, driven by the drive component, can achieve clamping control of the clamping component through the relative rotation of the inner and outer turntables. With the help of the elastic pressing component, a variable elastic pressing force can be applied to the outer turntable. This not only facilitates the clamping component to clamp cigarettes or filter rods of different diameters, but also drives the outer turntable to rotate after clamping, which is convenient for measuring length and / or circumference, thus having a wider range of applications.

[0022] Moreover, the adjustable elastic force of the elastic clamping component allows for more suitable clamping of products of different diameters, avoiding damage to the product surface caused by excessive clamping force. Attached Figure Description

[0023] Figure 1 A perspective view of a rotary clamping mechanism used for measurement;

[0024] Figure 2 A bottom view of a rotary clamping mechanism for measurement, showing a turntable assembly and a clamping assembly.

[0025] Figure 3 A perspective view of an elastic clamping assembly of a rotary clamping mechanism for measurement;

[0026] Figure 4 This is a perspective view of a rotary clamping mechanism used for measurement, after a partial cross-section.

[0027] In the diagram: 1-Mounting component; 2-Drive assembly; 21-Drive motor; 22-Transmission wheel one; 23-Synchronous belt; 24-Transmission wheel two; 3-Clamping assembly; 31-Claw component; 32-Equal height screw; 33-Connecting end; 34-Connecting shaft; 35-Cam; 36-Cam groove; 4-Turntable assembly; 41-Outer turntable; 42-Inner turntable; 421-Disc part; 422-Shaft part; 43-Channel; 5-Elastic clamping assembly; 51-Mounting block; 52-Push rod; 53-Slide groove; 54-Pressure roller; 6-Fiber optic sensor; 7-First bearing; 8-Second bearing. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0029] Please refer to Figure 1-4As shown, an embodiment of this application provides a rotary clamping mechanism for measurement, comprising: a mounting component 1; a turntable assembly 4 disposed on the mounting component 1, the turntable assembly 4 including an inner turntable 42 and an outer turntable 41 rotatably disposed outside the inner turntable 42, the inner turntable 42 having a channel 43 for the object to be measured to pass through; a clamping assembly 3 disposed on the inner turntable 42, the clamping assembly 3 including a plurality of rotatably disposed gripper components 31, the plurality of gripper components 31 being arranged in a circumferential array around the channel 43, the gripper components 31 having a connecting end 33 and being movably connected to the outer turntable 41 through the connecting end 33; a driving assembly 2 disposed on the mounting component 1, the driving assembly 2 driving the inner turntable 42 to rotate to drive the clamping assembly 3 to perform a clamping action; and an elastic pressing assembly 5 pressing against the outer turntable 41, the elastic pressing assembly 5 applying a pressing force to the outer turntable 41.

[0030] The inner turntable 42 and outer turntable 41 of the turntable assembly 4 can rotate relative to each other. This relative rotation drives the clamping assembly 3 to clamp the object to be measured, such as a filter rod, passing through the channel 43. By clamping and rotating the object, the diameter and circumference can be easily measured. The clamping jaws 31 of the clamping assembly 3 are arranged in a circumferential array around the periphery of the channel 43 to facilitate clamping the object to be measured passing through the channel 43. The jaws 31 are rotatably mounted on the inner turntable 42, and their connecting ends 33 are movably connected to the outer turntable 41. This connection structure allows the clamping jaws 31 to rotate around the hinge point with the inner turntable 42 to perform the clamping action when the driving assembly 2 drives the inner turntable to rotate. The drive assembly 2 drives the inner turntable 42 to rotate, enabling the inner turntable 42 to rotate relative to the outer turntable 41 without the outer turntable 41 overcoming the clamping force applied to it by the elastic clamping assembly 5. This relative rotation allows the clamping assembly 3 to perform a clamping action. When the inner turntable 42 drives the outer turntable 41 to overcome the clamping force applied to it by the elastic clamping assembly 5, the inner turntable 42 can drive the outer turntable 41 to rotate. The elastic clamping assembly 5 presses against the outer turntable 41 and applies a clamping force to it that is compatible with the object to be measured. This clamping force is used to drive the inner turntable 42 to rotate while the outer turntable 41 remains stationary, allowing the clamping assembly 3 to perform a clamping action. After clamping, the clamping assembly 3 can rotate again when the rotational force is greater than the applied clamping force (i.e., friction). Thus, the length and / or circumference of the object to be measured can be measured by rotation while clamped.

[0031] It is understandable that the movable connection between the connecting end 33 of the gripper component 31 and the outer turntable 41 can be a rotatable connection, or it can be able to slide a certain distance inward while being rotatable, or other connection structures that facilitate gripping, without any restrictions.

[0032] Through the above-mentioned technical solution, under the driving action of the driving component 2, the clamping control of the clamping component 3 can be realized by the relative rotation of the inner turntable 42 and the outer turntable 41. With the cooperation of the elastic pressing component 5, an elastic and variable pressing force can be applied to the outer turntable 41. This not only makes it easier for the clamping component 3 to clamp cigarettes or filter rods of different diameters with corresponding clamping force, but also allows the outer turntable 41 to rotate after clamping, which facilitates the measurement of length and / or circumference, thus expanding its applicability.

[0033] In one embodiment, the elastic pressing assembly 5 includes an elastic telescopic member and a pressing member, wherein the pressing member is disposed at the free end of the elastic telescopic member and abuts against the outer turntable 41.

[0034] In this way, the elastic telescopic component of the elastic clamping assembly 5 can elastically extend and retract, and it contacts the outer turntable 41 through the pressing component, thereby applying a clamping force to the outer turntable 41. The elastic telescopic component can also be used to clamp objects of different diameters.

[0035] Furthermore, the pressing member is pressed radially against the outer circumferential surface of the outer turntable 41 by an elastic telescopic member, and the pressing member is a rotating pressing wheel 54.

[0036] In this way, the pressing member presses against the outer circumferential surface of the outer turntable 41 in the radial direction, and the pressing wheel 54 facilitates the rotation of the outer turntable 41. By reducing the contact area and using a rotational engagement, the outer turntable 41 can be easily rotated, making it more sensitive in the clamping process of objects such as filter rods, and better avoiding excessive pressure on the surface of the objects such as filter rods.

[0037] In order to more accurately clamp objects of different diameters, in some embodiments, the elastic force of the elastic telescopic member can be configured to be adjustable, or the elastic element on the elastic telescopic member can be replaced with an elastic element with a different elastic force.

[0038] In the embodiment where the elastic force of the elastic telescopic component is adjustable, the clamping force can be increased or decreased by changing the distance of the outer turntable 41 of the elastic clamping component 5, which can facilitate the effective clamping of objects of different diameters. Alternatively, the spring can be compressed to store force or reduce the degree of compression, thereby allowing for greater or less force to be applied during pressing.

[0039] In embodiments where the elastic element on the elastic telescopic component is configured to be replaceable with elastic elements of different elastic forces, the clamping force can be adjusted by replacing the elastic element on the elastic telescopic component, which also facilitates the effective clamping of objects of different diameters. For example, the elastic telescopic component may include a push rod 52, a mounting block 51, and a spring (not shown in the figure). The mounting block 51 is provided with a slide groove 53. One end of the push rod 52 is slidably mounted in the slide groove 53, and the spring is also mounted in the slide groove 53 and located between the push rod 52 and the side wall of the slide groove 53. The other end of the push rod 52 is connected to a bearing with a screw. The bearing acts as a pressing element to press against the outer turntable 41. The bearing's axial position can be easily changed by the screw to press against the corresponding position of the outer turntable 41 as needed or to adjust the position. The spring can be removed from the slide groove 53 for replacement, thereby realizing the replaceability of the elastic element.

[0040] In an embodiment of this application, the connecting end 33 of the gripper component 31 is connected to the outer turntable 41 via a cam 35 assembly. The cam 35 assembly includes a connecting shaft 34, a cam 35, and a cam groove 36. The cam groove 36 is radially disposed on the outer turntable 41. One end of the connecting shaft 34 is connected to the cam 35, which is slidably fitted in the cam groove 36, and the other end of the connecting shaft 34 is rotatably connected to the connecting end 33 of the gripper component 31.

[0041] By using the radially arranged cam groove 36 in conjunction with the cam 35, the gripper component 31 can move centripetally along the trajectory of the cam groove 36 on the outer turntable 41 as the inner turntable 42 rotates, thereby achieving simultaneous centripetal clamping and opening.

[0042] Furthermore, the inner turntable 42 is provided with a disc portion 421 and a shaft portion 422 connected to the disc portion 421. The shaft is provided with a shaft hole that passes through the disc portion 421 to form the channel 43. The shaft portion 422 is rotatably engaged with the outer turntable 41 and the mounting member 1. The drive assembly 2 is drively connected to the shaft portion 422 of the inner turntable 42 to drive the inner turntable 42 to rotate.

[0043] In this way, the inner turntable 42, which has a disk portion 421 and a shaft portion 422, can be conveniently set as a shaft hole for the channel 43, and can also be conveniently rotatably connected with the outer turntable 41 and the mounting component 1, making the structural design more reasonable.

[0044] In a preferred embodiment of the drive assembly 2, the drive assembly 2 includes a drive motor 21, a first transmission wheel 22 and a second transmission wheel 24. The output shaft of the drive motor 21 is connected to the first transmission wheel 22, and the first transmission wheel 22 is in transmission engagement with the second transmission wheel 24, which is coaxially connected to the shaft portion 422.

[0045] The drive motor 21 can drive the transmission wheel 22 to rotate. The rotation of the transmission wheel 22 can drive the transmission wheel 24 to rotate. The transmission wheel 24 is connected to the shaft 422 of the inner turntable 42, which can drive the inner turntable 42 to rotate. In this way, the clamping assembly 3 can be driven to perform clamping action.

[0046] Specifically, both transmission wheel 22 and transmission wheel 24 are toothed pulleys and are connected by a toothed synchronous belt 23. The toothed pulleys and toothed synchronous belt 23 enable more stable and precise transmission, avoiding the over-clamping problem caused by transmission slippage in mechanisms such as belt drives.

[0047] To automatically clamp the object to be tested, a sensing element is provided on the mounting component 1, and a triggering component that cooperates with the sensing element is provided on the outer turntable 41. When the sensing element senses the triggering component, the clamping assembly 3 is in an open state and the sensing element outputs a first signal. The sensing element on the mounting component 1 can cooperate with the triggering component on the outer turntable 41. When the inner turntable 42 drives the outer turntable 41 to rotate, causing the clamping assembly 3 to open and return to the original position, the triggering component moves to the original position. At this time, the sensing element can sense the triggering component and output a first signal. The first signal can be used for coordinated control of other process control equipment. For example, when in the original position, the filter rod waiting to be tested enters the channel 43 from the previous working unit. When the filter rod enters the designated position, the driving component 2 drives the clamping assembly 3 to clamp it.

[0048] Specifically, the gripper component 31 has a V-shaped structure, with one end being the gripping section and the other end being the connecting end 33. The middle part of the gripper component 31 is rotatably mounted on the inner turntable 42 by equal-height screws 32.

[0049] In the specific implementation process, the sensing component is the fiber optic sensor 6, and the triggering component can be a matching triggering component.

[0050] According to an embodiment of this application, a rotary clamping mechanism for measurement is used in the following process: First, the drive motor 21 drives the inner turntable 42 to rotate via the toothed synchronous belt 23, transmission wheel 22, and transmission wheel 24. The inner turntable 42 then drives the outer turntable 41 to rotate, causing the gripper component 31 to open and return to the origin position. The origin position is sensed by the fiber optic sensor 6. When the fiber optic sensor 6 senses the origin, the cigarette or filter rod enters the channel 43 from the previous working unit. When the cigarette or filter rod enters the designated position, the drive motor 21 reverses to drive the inner turntable 42 and the outer turntable 41 to clamp the gripper component 31 and then start rotating until the measurement of length / circumference is completed. Then, the drive motor 21 rotates forward to release the gripper component 31, and the cigarette or filter rod falls to the next working unit.

[0051] The purpose of adding the elastic pressing component 5 to the outer turntable 41 is to add a pressure point so that the outer turntable 41 is subjected to a certain resistance when it rotates, preventing the outer turntable 41 from rotating along with the inner turntable 42 when it drives the gripper component 31 to clamp the cigarette or filter rod. When the gripper component 31 clamps the cigarette or filter rod, the drive motor 21 continues to rotate. Finally, the outer turntable 41 overcomes the resistance added by the elastic pressing component 5 and rotates, driving the cigarette or filter rod to rotate.

[0052] The inner turntable 42 and the outer turntable 41 are two independent turntables. The two turntables are connected by the first bearing 7, and then the two turntables are connected to the mounting component 1, such as the mounting plate, by the second bearing 8. The inner turntable 42 rotates to the limit position and then drives the outer turntable 41 to rotate, so as to realize the separation and clamping of the gripper component 31.

[0053] The three gripper components 31 move centripetally along the trajectory of the three cam grooves 36 of the outer turntable 41 as the inner turntable 42 rotates, thus achieving simultaneous centripetal clamping and opening.

[0054] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A rotary chucking mechanism for measurement, characterized by, include: Installing component (1); A turntable assembly (4) is provided on the mounting component (1). The turntable assembly (4) includes an inner turntable (42) and an outer turntable (41) rotatably disposed outside the inner turntable (42). The inner turntable (42) is provided with a channel (43) for the object to be measured to pass through. The clamping assembly (3) is provided on the inner turntable (42). The clamping assembly (3) includes a plurality of rotatably arranged gripper parts (31). The plurality of gripper parts (31) are arranged in a circumferential array on the periphery of the channel (43). The gripper parts (31) are provided with connecting ends (33) and are movably connected to the outer turntable (41) through the connecting ends (33). A drive assembly (2) disposed on the mounting member (1) drives the inner turntable (42) to rotate, thereby causing the clamping assembly (3) to perform a clamping action; and The elastic clamping assembly (5) presses against the outer turntable (41), and the elastic clamping assembly (5) applies a clamping force to the outer turntable (41).

2. A rotary chucking mechanism for measurement as claimed in claim 1, characterized in that The elastic clamping assembly (5) includes an elastic telescopic member and a pressing member, wherein the pressing member is disposed at the free end of the elastic telescopic member and presses against the outer turntable (41).

3. A rotary chucking mechanism for measurement as claimed in claim 2, characterized in that The pressing member is pressed radially against the outer circumferential surface of the outer turntable (41) by an elastic telescopic member. The pressing member is a rotating pressing wheel (54).

4. A rotary chucking mechanism for measurement as claimed in claim 2, characterized in that The elastic force of the elastic telescopic component is adjustable, or the elastic element on the elastic telescopic component can be replaced with an elastic element with a different elastic force.

5. A rotary chucking mechanism for measurement as claimed in claim 1, characterized in that, The connecting end (33) of the gripper component (31) is connected to the outer turntable (41) via a cam (35) assembly. The cam (35) assembly includes a connecting shaft (34), a cam (35), and a cam groove (36). The cam groove (36) is radially disposed on the outer turntable (41). One end of the connecting shaft (34) is connected to the cam (35) which is slidably fitted in the cam groove (36). The other end of the connecting shaft (34) is rotatably connected to the connecting end (33) of the gripper component (31).

6. A rotary chucking mechanism for measurement as claimed in claim 1, characterized in that The inner turntable (42) is provided with a disc portion (421) and a shaft portion (422) connected to the disc portion (421). The shaft is provided with a shaft hole that passes through the disc portion (421) to form the channel (43). The shaft portion (422) is rotatably engaged with the outer turntable (41) and the mounting component (1). The drive assembly (2) is connected to the shaft portion (422) of the inner turntable (42) to drive the inner turntable (42) to rotate.

7. A rotary chucking mechanism for measurement as claimed in claim 6, characterized in that The drive assembly (2) includes a drive motor (21), a first transmission wheel (22) and a second transmission wheel (24). The output shaft of the drive motor (21) is connected to the first transmission wheel (22), and the first transmission wheel (22) is in transmission cooperation with the second transmission wheel (24) which is coaxially connected to the shaft (422).

8. A rotary chucking mechanism for measurement as claimed in claim 7, characterized in that Both the first transmission wheel (22) and the second transmission wheel (24) are toothed pulleys and are connected by a toothed synchronous belt (23).

9. A rotary chucking mechanism for measurement as claimed in claim 1, characterized in that, The mounting component (1) is provided with a sensing element, and the outer turntable (41) is provided with a triggering component that cooperates with the sensing element. When the sensing element senses the triggering element, the clamping assembly (3) is in an open state and the sensing element outputs a first signal.

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