Automatic clamping device for ventilation rate standard rod

Abstract

The utility model provides an automatic clamping device for a ventilation rate standard rod. The automatic clamping device comprises a conveying belt, a clamp, an infrared collimation detection device and a tray, the tray is arranged on the belt surface of the conveying belt and horizontally moves along with the conveying belt; the surface of the tray is provided with a plurality of storage grooves which are parallel to one another and are used for placing standard rods; the clamps are arranged on the two sides of the conveying belt and located on the stroke path of the tray, the height of the clamps is equal to the placing height of the standard rods, and the two clamping ends of the clamps clamp the standard rods by moving in the opposite directions. At least one clamping end of the clamp is a clamp with a built-in gas circuit structure, and the gas circuit structure is used for communicating the gas hole of the standard rod and external detection equipment; the infrared collimation detection devices are arranged on the two sides of the conveying belt in pairs, located on the upstream sides of the clamps and used for collimation detection of the standard rods. The device has the advantages that the ventilation rate standard rods can be accurately clamped one by one in batches, the standard rods are not prone to being damaged, and detection is convenient.

Description

Technical Field

[0001] This utility model relates to the field of tobacco detection technology, specifically to an automatic clamping device for ventilation rate standard rods. Background Technology

[0002] Cigarette ventilation rate is a crucial indicator affecting cigarette quality. Its value is closely related to cigarette smoke generation, taste, and filter efficiency, and it also has a direct correlation with reducing tar and harmful substances in cigarettes. The tobacco industry uses numerous brands and models of cigarette ventilation rate testing equipment. To ensure the accuracy and consistency of test results, ventilation rate standard rods are typically used to calibrate the equipment. Therefore, the accurate use of the ventilation rate standard rod measurements directly impacts the accuracy of the cigarette ventilation rate measurement results.

[0003] The ventilation rate standard rod consists of a rod body made of low-expansion transparent crystal and capillary through-holes integrally formed within the rod body. The capillary through-holes include 10 axially oriented capillaries and side ventilation holes partially communicating with the capillaries. The axially oriented capillaries are arranged concentrically and parallel to each other, while the ventilation holes are arranged in a ring array around the outer periphery of the rod body's insertion end. Standard rods with different ventilation rates can be manufactured by adjusting parameters such as the diameter and number of each capillary through-hole. To facilitate identification of standard rods with different ventilation rates, printed color-coded rings are provided on the rod body, with different colors representing different ventilation rates.

[0004] In the manufacturing and application stages, it is necessary to test or use each group or batch of ventilation rate standard bars individually. The manual transfer method has many uncertainties. Due to the special nature of the material and structure of the ventilation rate standard bars, they are fragile during the measurement process.

[0005] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic clamping device for ventilation rate standard bars that can accurately clamp one by one in batches, is not easily damaged, and is easy to inspect.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: an automatic clamping device for ventilation rate standard bars, including a conveyor belt, clamps, an infrared collimation detection device, and a tray;

[0008] The pallet is placed on the surface of the conveyor belt and moves horizontally with the conveyor belt;

[0009] The surface of the tray is provided with several parallel storage slots for placing standard bars.

[0010] The clamps are set on both sides of the conveyor belt and located on the travel path of the pallet. The height of the clamps is the same as the placement height of the standard bar. The two clamping ends of the clamps clamp the standard bar by moving towards each other.

[0011] At least one clamping end of the fixture is a fixture with a built-in air passage structure, which is used to connect the air hole of the standard rod and the external detection equipment.

[0012] The infrared collimation detection devices are arranged in pairs on both sides of the conveyor belt and located upstream of the clamp, and are used for collimation detection of the standard bar.

[0013] Based on the above, the clamping end of the fixture has a flared structure, which is used to press and close the standard bar from both ends and around the standard bar. The width of the conveyor belt and the width of the tray are both less than the length of the standard bar.

[0014] Based on the above, the inner wall of the flared structure is provided with a rubber sealing ring.

[0015] Based on the above, the infrared collimation detection device includes two infrared ranging sensors disposed on both sides of the conveyor belt.

[0016] Based on the above, an alignment baffle is provided on one side of the conveyor belt for aligning the ends of several standard bars on the pallet.

[0017] Based on the above, an alignment baffle is also provided on the other side of the conveyor belt.

[0018] Based on the above, the storage groove is an arc groove that conforms to the outline of the standard bar.

[0019] Based on the above, the drive motor of the conveyor belt, the infrared collimation detection device, and the clamp are controlled by a controller to achieve linkage.

[0020] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model has the following advantages:

[0021] The standard bars are delivered one by one to the clamp by the driving force of the conveyor belt carrying the pallet, avoiding manual transfer and thus ensuring the safety of the standard bars during the transfer process; the collimation detection device is used to determine whether the collimation of the current standard bar meets the standard; the clamping method is connected to the external detection device to realize the real-time detection of the current standard bar, and finally realizes the one-by-one detection of a batch of standard bars. The whole process reduces human intervention, ensures clamping accuracy, and is not easily damaged. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the automatic clamping device for the ventilation rate standard bar in this utility model.

[0023] Figure 2 This is a schematic diagram of the end of the tray structure in this utility model.

[0024] Figure 3 This is a schematic diagram of the fixture in this utility model.

[0025] In the diagram: 1. Conveyor belt; 2. Clamp; 3. Infrared collimation detection device; 4. Pallet; 5. Standard bar; 6. Alignment baffle; 11. Motor; 12. Storage slot; 13. Clamping end; 14. Trumpet structure; 15. Rubber sealing ring. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0027] like Figures 1-3 As shown, an automatic clamping device for ventilation rate standard bars includes a conveyor belt 1, a clamp 2, an infrared collimation detection device 3, and a tray 4.

[0028] The conveyor belt 1 is a straight conveyor belt, and one or both ends of it are driven to rotate by a motor 11 to realize the linear transfer of the standard bar.

[0029] The tray 4 is placed on the surface of the conveyor belt 1 and moves horizontally with the conveyor belt 1. The surface of the tray 4 is provided with a plurality of parallel storage slots 12 for placing standard bars 5. The outline of the storage slots 12 is an arc shape that fits the outline of the standard bars 5.

[0030] The clamps 2 are set on both sides of the conveyor belt 1 and located on the travel path of the pallet 4. The height of the clamps 4 is the same as the placement height of the standard bar 5. The two clamping ends of the clamps 4 clamp the standard bar 5 by moving towards each other.

[0031] Specifically, in this embodiment, the opposite side of the clamping end 13 of the clamp 2 is configured as a flared structure 14. The inner surface of the flared structure 14 is provided with a rubber sealing ring 15, which is used to press and seal the circumference of the standard rod 5 from both ends, so that the airflow can only flow through the aperture of the standard rod 5.

[0032] The width of the conveyor belt 1 and the width of the pallet 4 are both less than the length of the standard bar 5, so as to avoid interference between the clamp 2, the conveyor belt 1, and the pallet 4.

[0033] The clamping end 13 of the fixture 2 is provided with an air passage structure for detecting suction resistance. Since the test head used to clamp the end of the standard rod 5 is a common test head in the field of testing equipment, it is usually used with a smoke machine or suction resistance calibration instrument. Therefore, this application will not describe its specific structure in detail. It is a conventional structure of a conventional test head. The air passage structure is used to connect the air hole of the standard rod and the external detection device so as to perform real-time detection on the standard rod.

[0034] The opposing motion of fixture 2 is mainly linear motion, and its driving method is diverse, including common linear motion mechanisms such as linear motors, lead screw mechanisms, electric push rods or cylinders.

[0035] The infrared collimation detection devices 3 are arranged in pairs on both sides of the conveyor belt 1 and located upstream of the clamp. They are used for collimation detection of the standard bar 5. In this embodiment, the infrared collimation detection device 3 includes two infrared ranging sensors arranged on both sides of the conveyor belt 1, each with a drive and control module. The principle is to determine whether the standard bar is on the required straight line by synchronously detecting the distance between the standard bar and the end of the standard bar.

[0036] In order to ensure that the standard bar 5 is in a certain position after it is moved into place, an alignment baffle 6 is provided on one side of the conveyor belt 1 to align the ends of several standard bars 5 on the tray 4. In a preferred embodiment, an alignment baffle is also provided on the other side of the conveyor belt, the purpose of which is mainly to align the two ends of the standard bar 5.

[0037] To achieve coordination, the drive motor 11 of the conveyor belt 1, the infrared collimation detection device 3, and the clamp 2 are controlled by a controller to achieve linkage.

[0038] Working principle explanation:

[0039] First, the staff places a set of standard bars 5 to be tested onto the tray 4, roughly adjusts the position of each standard bar 5 to make them consistent, and then places the tray on the surface of the conveyor belt 1. The position can be locked between the tray 4 and the conveyor belt 1 by friction, or corresponding slots for mounting the tray 4 can be set on the surface of the conveyor belt 1, or it can be quickly fixed by magnetic attraction, adhesive or other methods.

[0040] Then, the ends of the standard bar 5 are aligned using the alignment baffle 6 on the side of the conveyor belt. The alignment baffle 6 can be operated by a person or driven by a linear motor. Its movement direction is consistent with the movement direction of the clamp 2. In terms of structural design, a sliding guide rail can be set for the alignment baffle 6. The alignment baffle 6 is installed on the guide rail by a slider or other structure to ensure its straightness.

[0041] Start the conveyor belt and move it at the set speed, which will move the standard bar forward. When it moves to the infrared collimation detection device 3, the infrared ranging sensors on both sides will synchronously detect whether the distance between the two ends is the same as the set value. If the standard bar 5 is deviated, it will inevitably cause the ranging data at both ends to be different. It can be determined that the standard bar is deviated, the conveyor belt will stop, an alarm will be issued, and the staff will be reminded to make adjustments.

[0042] If the distance measurement data at both ends is the same as the set data, then there is no problem, and the standard rod is allowed to continue moving forward.

[0043] According to the built-in parameters, the conveyor belt moves a set distance to transport the standard bar to the clamp position. The clamps are controlled to move towards each other to clamp the standard bar. Then, the external detection equipment is activated to perform suction resistance detection. After the detection is completed, the clamps separate from both ends, the standard bar is separated from the clamp, and the conveyor belt continues to move forward to detect the subsequent standard bars one by one.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An automatic clamping device for a ventilation rate standard bar, characterized in that: Includes conveyor belts, clamps, infrared collimation detection devices, and pallets; The pallet is placed on the surface of the conveyor belt and moves horizontally with the conveyor belt; The surface of the tray is provided with several parallel storage slots for placing standard bars. The clamps are set on both sides of the conveyor belt and located on the travel path of the pallet. The height of the clamps is the same as the placement height of the standard bar. The two clamping ends of the clamps clamp the standard bar by moving towards each other. At least one clamping end of the fixture is a fixture with a built-in air passage structure, which is used to connect the air hole of the standard rod and the external detection equipment. The infrared collimation detection devices are arranged in pairs on both sides of the conveyor belt and located upstream of the clamp, and are used for collimation detection of the standard bar.

2. The automatic clamping device for the ventilation rate standard bar according to claim 1, characterized in that: The clamping end of the fixture has a flared structure, which is used to press and close the standard bar from both ends and around its perimeter. The width of the conveyor belt and the width of the tray are both less than the length of the standard bar.

3. The automatic clamping device for the ventilation rate standard bar according to claim 2, characterized in that: The inner wall of the flared structure is provided with a rubber sealing ring.

4. The automatic clamping device for the ventilation rate standard bar according to claim 3, characterized in that: The infrared collimation detection device includes two infrared ranging sensors located on both sides of the conveyor belt.

5. The automatic clamping device for the ventilation rate standard bar according to claim 4, characterized in that: One side of the conveyor belt is provided with an alignment baffle for aligning the ends of several standard bars on the pallet.

6. The automatic clamping device for the ventilation rate standard bar according to claim 5, characterized in that: Alignment baffles are also provided on the other side of the conveyor belt.

7. The automatic clamping device for the ventilation rate standard bar according to claim 6, characterized in that: The storage slot is an arc-shaped slot that conforms to the outline of the standard bar.

8. The automatic clamping device for the ventilation rate standard bar according to claim 1, characterized in that: The drive motor of the conveyor belt, the infrared collimation detection device, and the clamps are controlled by a controller to achieve linkage.

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