Electric tensioning device for bottom belt driving chain of cut tobacco production line storage cabinet

Abstract

The utility model belongs to the technical field of tobacco manufacturing, and particularly relates to an electric tensioning device for a bottom belt driving chain of a tobacco shred manufacturing storage cabinet, which comprises a cylinder, a plurality of sliding grooves are arranged on the inner wall of the cylinder, a fixed seat is welded on the outer wall of the cylinder, a controller is fastened on the outer wall of the fixed seat through a bolt, and a motor is detachably arranged on the top end wall of the cylinder. A lead screw is locked at the output end of the motor through a coupler, the bottom end of the lead screw extends into the cylinder, the outer wall of the lead screw is fixedly connected with the inner top wall of the cylinder through a bearing, a circular plate is in threaded connection with the outer wall of the lead screw, a plurality of sliding blocks are arranged on the outer wall of the circular plate and slidably connected into the sliding grooves, and a hollow connecting cylinder is arranged at the bottom end of the circular plate. According to the utility model, the chain jumping phenomenon caused by abrasion, deformation and extension of the chain after long-term use is solved, the electric tensioning device can enable the chain to be always in a tensioning state, manual adjustment is not needed, the labor intensity is reduced, and a chain roller is well meshed with a chain wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of medicinal herb manufacturing, in particular to an electric tensioning device for a bottom belt driving chain of a silk thread storage cabinet. Background Art

[0002] In the field of cigarette production, the degree of automation of the silk production line is quite high. The phenomenon of "one fault, the whole line stagnates" does exist. Although this statement may be a little exaggerated, it does reflect the seriousness of the problem. As a key component on the production line, the transmission roller chain is highly favored for its high transmission efficiency, accurate transmission ratio and strong transmission power.

[0003] At present, the bottom belt conveyor of the storage cabinets in the silk-making workshop mainly relies on double-row 1-inch roller chains. These storage cabinets need to carry about 8,000 to 10,000 kilograms of materials, with a daily turnover frequency of up to two to three times, a huge workload and frequent starts and stops. However, since the chain itself has many links, reaching 66 links, a total length of 1,676 mm, weighing 18 kilograms, and lacks a tensioning device in the middle, the roller chain is prone to stretching deformation, chain jumping, and even breakage during use.

[0004] These failures not only seriously affect the smooth operation of the production line, resulting in the inability to effectively connect the production links, but may also cause product quality problems. Therefore, how to ensure the stability and reliability of the transmission roller chain has become an important issue that needs to be solved in the cigarette shred production line. Utility Model Content

[0005] In order to solve the above problems, the utility model designs an electric tensioning device for driving a chain of a bottom belt of a silk thread storage cabinet.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] The top end of the support leg is connected with the support of the control wheel, and the bottom end of the support leg is connected with the support wheel to the control wheel.

[0008] Furthermore, the bottom end wall of the lead screw extends into the connecting tube and is provided with a limiting block.

[0009] Furthermore, the top end of the outer wall of the round rod passes through the spring and the bottom plate, extends into the connecting tube, and is provided with a second limiting block.

[0010] Furthermore, the outer ring of the bearing is fixedly connected to the inner wall of the cylinder via a bearing seat, and the inner ring of the bearing is connected to the outer wall of the lead screw by interference fit.

[0011] Furthermore, the controller is electrically connected to the motor and the distance sensor.

[0012] Furthermore, the number of the sliding blocks is at least two, and they are arranged on the outer wall of the circular plate with a circumferential gap.

[0013] The beneficial effects of the utility model are:

[0014] The utility model adopts an electric tensioning device installed on the driving chain. The electric tensioning device can monitor the working state of the driving chain in real time. Once relaxation occurs, the tensioning operation can be performed in time, which solves the problem of chain jumping and falling caused by wear, deformation and elongation of the chain due to long-term use. The electric tensioning device can keep the chain in a tensioned state at all times without manual adjustment, reducing labor intensity, maintaining good meshing between the chain roller and the sprocket, solving the problem of manual wire loading affecting product quality due to shutdown, and ensuring orderly production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the main structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the expanded structure of the connecting tube of the utility model.

[0019] Description of reference numerals:

[0020] 1. Cylinder, 2. Fixed seat, 3. Controller, 4. Motor, 5. Screw, 6. Bearing, 7. Round plate, 8. Slider, 9. Connecting cylinder, 10. Bottom plate, 11. Spring, 12. Base, 13. Round rod, 14. Distance sensor, 15. Support column, 16. Tensioning wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3As shown, an electric tensioning device for a bottom belt drive chain of a silk thread storage cabinet comprises a cylinder 1, a plurality of slide grooves are provided on the inner wall of the cylinder 1, a fixing seat 2 is welded on the outer wall of the cylinder 1, a controller 3 is tightened on the outer wall of the fixing seat 2 by bolts, a motor 4 is detachably provided on the top wall of the cylinder 1, a lead screw 5 is locked at the output end of the motor 4 by a coupling, the bottom end of the lead screw 5 extends into the cylinder 1, and the outer wall is fixedly connected to the inner top wall of the cylinder 1 by a bearing 6, a circular plate 7 is threadedly connected to the outer wall of the lead screw 5, and a plurality of A slider 8 is provided, and is slidably connected in the slide groove. A hollow connecting tube 9 is provided at the bottom end of the circular plate 7. A bottom plate 10 is provided on the outer wall of the bottom end of the connecting tube 9. A spring 11 is provided at the bottom end of the bottom plate 10. A base 12 is provided at the bottom end of the spring 11. A round rod 13 is provided in the middle of the top outer wall of the base 12. A distance sensor 14 is provided on the side of the top outer wall of the base 12. The controller 3 is electrically connected to the motor 4 and the distance sensor 14. A support column 15 is provided on the bottom end wall of the base 12. The bottom end of the support column 15 extends out of the cylinder 1 and is provided with a tensioning wheel 16.

[0023] The bottom end wall of the screw 5 extends into the connecting tube 9 and is provided with a limit block 1. The motor 4 causes the screw 5 to rotate, and the screw 5 causes the circular plate 7 to drive the slider 8, the connecting tube 9, the bottom plate 10, the spring 11, the base 12, the support column 15 and the tensioning wheel 16 to move downward. The limit block 1 prevents the circular plate 7 from falling off the outer wall of the screw 5.

[0024] The top end of the outer wall of the round rod 13 passes through the spring 11 and the bottom plate 10 and extends into the connecting tube 9, and is provided with a second limit block. The round rod 13 limits and stabilizes the spring 11, making the spring 11 more stable when deformed, and the second limit block prevents the round rod 13 from moving out of the connecting tube 9.

[0025] The outer ring of the bearing 6 is fixedly connected to the inner wall of the cylinder 1 through the bearing seat, and the inner ring of the bearing 6 is connected to the outer wall of the screw 5 by interference fit. The bearing 6 fixes the screw 5 and allows the screw 5 to rotate through the bearing 6.

[0026] There are at least two sliders 8 arranged on the outer wall of the circular plate 7 with a circumferential gap. The sliders 8 slide in the slide grooves to limit and stabilize the circular plate 7, thereby preventing the circular plate 7 from rotating synchronously with the moving screw 5.

[0027] According to the personnel in this field, all the electrical parts and components in this case are universal standard parts or components known to the technical personnel in this field, and their structures and principles can be known to the technical personnel through technical manuals or through conventional experimental methods. The models are compatible with this solution and can operate normally. All the electrical parts in this case are connected to the power supply adapted to them through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection is completed in the working order of each electrical component. The detailed connection means are well-known technologies in this field and will not be explained in the electrical control.

[0028] A specific application of this embodiment is:

[0029] When in use, the device is fixed on the side wall of the bottom belt frame of the storage cabinet by welding or bolting through the fixing seat 2. The device is not limited to the drive chain of the bottom belt of the storage cabinet, and can be used for any chain that needs to be tensioned. The tensioning wheel 16 is placed on the top of the drive chain. The installation angle of the cylinder 1 depends on the arrangement angle of the drive chain. The controller 3, the motor 4 and the distance sensor 14 are matched with the control system.

[0030] The motor 4 causes the lead screw 5 to rotate, and the lead screw 5 causes the circular plate 7 to drive the slider 8, the connecting tube 9, the bottom plate 10, the spring 11, the base 12, the support column 15 and the tensioning wheel 16 to move downward, so that the tensioning wheel 16 contacts the drive chain and the drive chain is tensioned.

[0031] At this time, the spring 11 is in a compressed state, and the distance sensor 14 is used to monitor the distance between the base 12 and the circular plate 7 in real time, and a distance value range is set. When the chain loosens, the elastic force of the spring 11 to restore the deformation pushes the base 12, the support column 15 and the tensioning wheel 16 to move downward, and the distance between the base 12 and the circular plate 7 becomes larger. When the variable distance value is greater than the set value, the motor 4 is started through the controller 3, prompting the circular plate 7 to push the connecting tube 9, the bottom plate 10, the spring 11, the base 12, the support column 15 and the tensioning wheel 16 to move downward. After the tensioning wheel 16 tensions the driving chain, it no longer moves downward. The circular plate 7 pushes the connecting tube 9 and the bottom plate 10 to continue to move downward, and compresses the spring 11, so that the distance between the base 12 and the circular plate 7 is shortened. When the shortened distance value reaches the set value, the motor 4 is stopped to realize the electric tensioning operation of the tensioning wheel 16.

[0032] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. An electric tensioning device for the bottom belt drive chain of a wire storage cabinet, characterized in that: comprising a cylinder (1), The inner wall of the cylinder (1) is provided with a plurality of slide grooves, the outer wall of the cylinder (1) is welded with a fixing seat (2), the outer wall of the fixing seat (2) is fastened with a controller (3) by bolts, the top wall of the cylinder (1) is detachably provided with a motor (4), the output end of the motor (4) is locked with a lead screw (5) by a coupling, the bottom end of the lead screw (5) extends into the cylinder (1), and the outer wall is fixedly connected to the inner top wall of the cylinder (1) by a bearing (6), the outer wall of the lead screw (5) is threadedly connected with a circular plate (7), and the outer wall of the circular plate (7) is provided with a plurality of sliders (8 ), and is slidably connected in the slide groove, the bottom end of the circular plate (7) is provided with a hollow connecting cylinder (9), the bottom outer wall of the connecting cylinder (9) is provided with a bottom plate (10), the bottom end of the bottom plate (10) is provided with a spring (11), the bottom end of the spring (11) is provided with a base (12), a round rod (13) is provided in the middle of the top outer wall of the base (12), a distance sensor (14) is provided on the side of the top outer wall of the base (12), a support column (15) is provided on the bottom end wall of the base (12), the bottom end of the support column (15) extends out of the cylinder (1) and is provided with a tensioning wheel (16).

2. The electric tensioning device for driving the bottom belt of the silk thread storage cabinet according to claim 1 is characterized in that: The bottom end wall of the lead screw (5) extends into the connecting tube (9) and is provided with a limiting block.

3. The electric tensioning device for driving the bottom belt of the silk thread storage cabinet according to claim 1 is characterized in that: The top end of the outer wall of the round rod (13) passes through the spring (11) and the bottom plate (10), extends into the connecting tube (9), and is provided with a second limit block.

4. The electric tensioning device for driving the bottom belt of the silk thread storage cabinet according to claim 1 is characterized in that: The outer ring of the bearing (6) is fixedly connected to the inner wall of the cylinder (1) via a bearing seat, and the inner ring of the bearing (6) is connected to the outer wall of the lead screw (5) by interference fit.

5. The electric tensioning device for driving the bottom belt of the silk thread storage cabinet according to claim 1 is characterized in that: The controller (3) is electrically connected to the motor (4) and the distance sensor (14).

6. The electric tensioning device for driving the bottom belt of the silk thread storage cabinet according to claim 1 is characterized in that: The number of the sliding blocks (8) is at least two, and they are arranged on the outer wall of the circular plate (7) with a circumferential gap.

Images