Belt correcting and tensioning mechanism of high-speed belt conveyor for tobacco impurity removal

Abstract

The utility model discloses a high-speed belt conveyor belt deviation rectifying and tensioning mechanism for tobacco impurity removal, which comprises a main body unit and a deviation rectifying mechanism, the main body unit comprises a left main frame and a right main frame, a main driving roller is arranged between the left main frame and the right main frame, a belt body is sleeved on the main driving roller, and the deviation rectifying mechanism is arranged on the belt body. The left side main frame and the right side main frame are respectively connected with a left side fixing plate and a right side fixing plate in a sliding manner, and the belt deviation rectifying and tensioning device has the beneficial effects that a belt deviation rectifying mechanism and a belt tensioning mechanism are combined together, so that the structure is more compact; a linear driving servo electric cylinder, a connecting rod, a first chain buckle, a second chain buckle and an optical sensor are arranged to drive the sliding type bearing seat on the left side to deviate, deviation correction adjustment is automatically conducted on the belt body, deviation correction adjustment can be conducted synchronously when the belt conveyor operates normally, shutdown is not needed, adjustment precision is high, response is fast, treatment is timely, and the working efficiency is improved. And dynamic self-adaptive adjustment can be realized in the full startup time.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors, in particular to a belt deviation correction and tensioning mechanism of a high-speed belt conveyor used for tobacco impurity removal. Background Art

[0002] Currently, the commonly used belt-type tobacco foreign body intelligent removal system primarily consists of a high-speed belt conveyor for spreading and feeding tobacco, a foreign body identification and detection device, and a foreign body removal device. To improve foreign body identification and removal rates while maintaining a certain production capacity, tobacco must be passed through the foreign body identification and detection device in a uniform, stable, thin, and high-speed manner. Therefore, the belt conveyor, as the tobacco feed carrier, is typically set at a relatively high speed (typically 5-7 m / s). Due to manufacturing and assembly errors, belt deviation is inevitable during operation. If the deviation exceeds a certain range, is not promptly corrected, and the belt speed is high, the belt will quickly rub against other side structures and wear. In severe cases, the belt may tear, causing equipment downtime and production suspension. Therefore, belt conveyors are generally equipped with belt deviation correction devices.

[0003] The belt deviation correction devices commonly used in the market currently mainly achieve belt deviation correction by manually adjusting the tensioning screws on both sides of the belt. The disadvantages are: the deviation correction adjustment needs to be performed when the machine is stopped; it can only be adjusted in manual mode; manual supervision is required; the deviation correction adjustment accuracy can only be controlled within about ±5mm, and it is easy to repeat; through uninterrupted manual observation and processing, the adjustment speed is obviously slow, not easy to achieve in time, and it is easy to cause fatigue.

[0004] Therefore, a new mechanism for correcting and tensioning the belt of a high-speed belt conveyor for tobacco impurity removal is needed to solve the above problems. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0006] In view of the above-mentioned problems of the belt deviation correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal, the present utility model is proposed.

[0007] Therefore, the purpose of the present utility model is to provide a belt correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal, which is used to solve the problems of "correction adjustment needs to be performed when the machine is stopped; it can only be adjusted in manual mode; manual supervision is required; the correction adjustment accuracy can only be controlled at about ±5mm, and it is easy to repeat; through uninterrupted manual observation and processing, the speed is obviously slow, it is not easy to do in time, and it is easy to cause fatigue" and so on.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a belt deviation correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal, comprising:

[0009] The main body unit comprises a left main frame and a right main frame, a main driving roller is arranged between the left main frame and the right main frame, and a belt body is sleeved on the main driving roller, and the left main frame and the right main frame are respectively slidably connected to the left fixed plate and the right fixed plate, and the left main frame and the right main frame are both provided with a belt tensioning adjustment screw, and the support rods on the left fixed plate and the right fixed plate are both perforated with the belt tensioning adjustment screw and are fastened together by double nuts, and the left fixed plate and the right fixed plate are respectively provided with a left sliding bearing seat and a right fixed bearing seat, and the two ends of the main driving roller are respectively assembled and connected with the left sliding bearing seat and the right fixed bearing seat through self-aligning bearing assemblies, and two rectangular guide rail grooves are provided on the left sliding bearing seat, and each of the rectangular guide rail grooves is provided with a sliding guide rail, and each of the sliding guide rails is fixedly connected to the left fixed plate;

[0010] The correction mechanism includes a linear drive servo electric cylinder, the output end of the linear drive servo electric cylinder is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to a No. 1 chain buckle and a No. 2 chain buckle, the other end of the No. 1 chain buckle is rotatably connected to a fisheye screw, the fisheye screw is fixedly installed on the left sliding bearing seat, the other end of the No. 2 chain buckle is rotatably connected to a fixed block, and the fixed block is fixedly connected to the left fixed plate.

[0011] As an optimal solution of the belt correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal described in the utility model, wherein: the two groups of the self-aligning bearing assemblies each include a self-aligning bearing and a locking cone sleeve, each of the inner rings of the self-aligning bearing is fixedly mounted on the outer ring of the locking cone sleeve, the two inner rings of the locking cone sleeve are respectively mounted on the two ends of the main drive roller, and each outer ring of the self-aligning bearing is respectively fixedly mounted on the left sliding bearing seat and the right fixed bearing seat.

[0012] As an optimal solution of the belt correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal described in the utility model, two connecting cross braces are fixedly installed between the left fixed plate and the right fixed plate, and the right fixed bearing seat is fixedly connected to the right fixed plate through a connecting transition plate.

[0013] As an optimal solution of the belt correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal described in the utility model, two groups of light sensors are fixedly installed on the opposite sides of the left main frame and the right main frame, and the two groups of light sensors are respectively arranged at a distance of 5-30 mm from the belt body.

[0014] As an optimal solution of the belt correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal described in the utility model, wherein: support rods are fixedly installed on the left main frame and the right main frame, and the two belt tensioning adjustment screws are rotatably connected to the support rods.

[0015] As an optimal solution of the belt correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal described in the utility model, wherein: the linear drive servo electric cylinder is fixedly connected to an electric cylinder fixing seat, and the electric cylinder fixing seat is fixedly connected to the left main frame.

[0016] Beneficial effects of the utility model:

[0017] The belt correction and tensioning mechanisms are combined together, making the structure more compact and convenient for integrated and modular production. The linear drive servo electric cylinder, connecting rod, No. 1 chain buckle, No. 2 chain buckle and optical sensor are used to drive the left sliding bearing seat to produce an offset, automatically correcting the belt body, and can be carried out synchronously when the belt conveyor is running normally without stopping. The adjustment is highly accurate, the response is fast, the processing is timely, and dynamic adaptive adjustment can be achieved at all times during the startup time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0019] Figure 1 The utility model is a schematic top view of the structure of a belt deviation correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal.

[0020] Figure 2 The utility model is a schematic diagram of the left side structure of a belt deviation correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal.

[0021] Figure 3 This is a schematic diagram of the right side structure of a belt deviation correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal according to the utility model.

[0022] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure 5 The utility model is a partial cross-sectional structural diagram of a belt deviation correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal.

[0024] Figure 6 The utility model is a structural schematic diagram of the right end of the main driving roller in the belt deviation correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal.

[0025] Figure 7 The utility model is a structural schematic diagram of the left end of the main driving roller in the belt deviation correction and tensioning mechanism of a high-speed belt conveyor for tobacco impurity removal.

[0026] Description of the drawings: 100, main unit; 101, main drive roller; 102, belt body; 103, left main frame; 104, right main frame; 105, belt tensioning adjustment screw; 106, left fixed plate; 107, right fixed plate; 108, connecting cross brace; 109, left sliding bearing seat; 110, right fixed bearing seat; 111, self-aligning bearing assembly; 112, connecting transition plate; 113, sliding guide rail; 114, light sensor; 200, correction mechanism; 201, linear drive servo cylinder; 202, connecting rod; 203, fisheye screw; 204, chain buckle No. 1; 205, chain buckle No. 2; 206, fixing block. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0031] Reference Figure 1-Figure 7 , which is an embodiment of the utility model, provides a belt deviation correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal, comprising:

[0032] The main unit 100 includes a left main frame 103 and a right main frame 104. A main driving roller 101 is provided between the left main frame 103 and the right main frame 104. A belt body 102 is sleeved on the main driving roller 101. A left fixing plate 106 and a right fixing plate 107 are slidably connected to the left main frame 103 and the right main frame 104 respectively. A belt tensioning adjusting screw 105 is provided on both the left main frame 103 and the right main frame 104. The support rods on the left fixing plate 106 and the right fixing plate 107 are connected to the belt tensioning adjusting screw 105. The belt tensioning adjustment screw 105 is perforated and fastened with a double nut. A left sliding bearing seat 109 and a right fixed bearing seat 110 are respectively provided on the left fixed plate 106 and the right fixed plate 107. The two ends of the main driving drum 101 are respectively assembled and connected with the left sliding bearing seat 109 and the right fixed bearing seat 110 through a self-aligning bearing assembly 111. Two rectangular guide grooves are provided on the left sliding bearing seat 109, each of which is provided with a sliding guide rail 113. Each sliding guide rail 113 is fixedly connected to the left fixed plate 106.

[0033] The correcting mechanism 200 includes a linear drive servo electric cylinder 201, the output end of the linear drive servo electric cylinder 201 is rotatably connected to a connecting rod 202, the other end of the connecting rod 202 is rotatably connected to a chain buckle 204 and a chain buckle 205, the other end of the No. 1 chain buckle 204 is rotatably connected to a fisheye screw 203, the fisheye screw 203 is fixedly installed on the left sliding bearing seat 109, the other end of the No. 2 chain buckle 205 is rotatably connected to a fixed block 206, and the fixed block 206 is fixedly connected to the left fixed plate 106; through the arrangement of the linear drive servo electric cylinder 201, the connecting rod 202, the No. 1 chain buckle 204, the No. 2 chain buckle 205 and the light sensor 114, the left sliding bearing seat 109 is driven to deviate, and the belt body 102 is automatically corrected and adjusted, and it can be carried out synchronously when the belt conveyor is operating normally, without stopping, with high adjustment accuracy, fast response, timely processing, and dynamic adaptive adjustment during the entire startup time.

[0034] Among them, the two sets of self-aligning bearing assemblies 111 both include self-aligning bearings and locking cone sleeves. The inner ring of each self-aligning bearing is fixedly mounted on the outer ring of the locking cone sleeve. The two inner rings of the locking cone sleeves are respectively mounted on the two ends of the main drive roller 101. The outer ring of each self-aligning bearing is respectively fixedly mounted on the left sliding bearing seat 109 and the right fixed bearing seat 110. The main drive roller 101 is positioned and installed through the self-aligning bearing assembly 111.

[0035] Among them, two connecting cross braces 108 are fixedly installed between the left fixed plate 106 and the right fixed plate 107. The right fixed bearing seat 110 is fixedly connected to the right fixed plate 107 through the connecting transition plate 112, and the connecting cross brace 108 is used to connect the left fixed plate 106 and the right fixed plate 107.

[0036] Among them, two groups of light sensors 114 are fixedly installed on the opposite sides of the left main frame 103 and the right main frame 104. The two groups of light sensors 114 are respectively set at a position of 5-30 mm away from the belt body 102. The light sensors 114 are used to dynamically detect the offset distance of the moving belt body 102.

[0037] Among them, support rods are fixedly installed on the left main frame 103 and the right main frame 104, and two belt tensioning adjustment screws 105 are rotatably connected to the support rods, and the belt tensioning adjustment screws 105 are supported by the support rods.

[0038] The linear drive servo electric cylinder 201 is fixedly connected to an electric cylinder fixing seat, and the electric cylinder fixing seat is fixedly connected to the left main frame 103 , so that the linear drive servo electric cylinder 201 is supported by the electric cylinder fixing seat.

[0039] Working principle: When replacing a new belt, first loosen the belt body 102, and adjust the two sets of belt tensioning adjustment screws 105 on the left and right sides respectively, so that the axial center line of the main drive roller 101 and the planes of the left main frame 103 and the right main frame 104 are perpendicular, and the extension stroke of the screw of the linear drive servo electric cylinder 201 is in the middle position;

[0040] Appropriately tension the belt body 102, measure the center distances from both ends of the main drive roller 101 to both ends of the passive roller (simplified figures in the specification are not shown), analyze and compare the difference between the two sets of data, and adjust the belt tensioning adjustment screws 105 on both sides again to make the two sets of data the same, that is, ensure that the axial center lines of the main and passive rollers are parallel and the belt body 102 is in a tensioned state;

[0041] When the machine is turned on, if the belt body 102 deviates to the left by 5mm during operation, the optical sensor 114 on the left side of the belt body 102 immediately senses this deviation and sends a signal to the PLC control system (not shown in the drawings of the specification) to adjust the deviation. After receiving this signal, the PLC will send an instruction to the linear drive servo electric cylinder 201 to retract its screw rod by a certain amount, pull the connecting rod 202, and make the left sliding bearing seat 109 slide forward along the length direction of the sliding guide rail 113 with the adjustment sliding end of the main drive roller 101, generating a front angular displacement, thereby realizing the belt left side correction adjustment; if the belt body 102 deviates to the right by 5mm during operation, the optical sensor 114 on the right side senses this deviation, and the linear drive servo electric cylinder 201 screw rod extends backward, pushing the connecting rod 202, generating a rear angular displacement, thereby realizing the belt right side correction adjustment. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A belt deviation correction and tensioning mechanism for a high-speed belt conveyor used for tobacco impurity removal, characterized in that: include: A main unit (100) includes a left main frame (103) and a right main frame (104); a main driving roller (101) is provided between the left main frame (103) and the right main frame (104); a belt body (102) is sleeved on the main driving roller (101); a left fixed plate (106) and a right fixed plate (107) are respectively slidably connected to the left main frame (103) and the right main frame (104); a belt tensioning adjustment screw (105) is provided on both the left main frame (103) and the right main frame (104); The support rods on the left side are all perforated with the belt tensioning adjustment screw (105) and are fastened by double nuts. The left side fixed plate (106) and the right side fixed plate (107) are respectively provided with a left side sliding bearing seat (109) and a right side fixed bearing seat (110). The two ends of the main driving roller (101) are respectively assembled and connected with the left side sliding bearing seat (109) and the right side fixed bearing seat (110) through a self-aligning bearing assembly (111). The left side sliding bearing seat (109) is provided with two rectangular guide rail grooves, each of which is provided with a sliding guide rail (113), and each of the sliding guide rails (113) is fixedly connected to the left side fixed plate (106); The correction mechanism (200) comprises a linear drive servo electric cylinder (201), the output end of the linear drive servo electric cylinder (201) is rotatably connected to a connecting rod (202), the other end of the connecting rod (202) is rotatably connected to a first chain buckle (204) and a second chain buckle (205), the other end of the first chain buckle (204) is rotatably connected to a fisheye screw (203), the fisheye screw (203) is fixedly installed with a left sliding bearing seat (109), the other end of the second chain buckle (205) is rotatably connected to a fixed block (206), and the fixed block (206) is fixedly connected to the left fixed plate (106).

2. The belt deviation correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal according to claim 1, characterized in that: The two sets of self-aligning bearing assemblies (111) each include a self-aligning bearing and a locking cone sleeve. The inner ring of each self-aligning bearing is fixedly mounted on the outer ring of the locking cone sleeve. The two inner rings of the locking cone sleeve are respectively sleeved on the two ends of the main driving roller (101). The outer ring of each self-aligning bearing is respectively fixedly mounted on the left sliding bearing seat (109) and the right fixed bearing seat (110).

3. The belt deviation correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal according to claim 1, characterized in that: Two connecting cross braces (108) are fixedly installed between the left fixed plate (106) and the right fixed plate (107), and the right fixed bearing seat (110) is fixedly connected to the right fixed plate (107) via a connecting transition plate (112).

4. The belt deviation correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal according to claim 1, characterized in that: Two groups of optical sensors (114) are fixedly installed on opposite sides of the left main frame (103) and the right main frame (104), and the two groups of optical sensors (114) are respectively arranged at positions 5-30 mm away from the belt body (102).

5. The belt deviation correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal according to claim 1, characterized in that: Support rods are fixedly mounted on the left main frame (103) and the right main frame (104), and the two belt tensioning adjustment screw rods (105) are rotatably connected to the support rods.

6. The belt deviation correction and tensioning mechanism for a high-speed belt conveyor for tobacco impurity removal according to claim 1, characterized in that: The linear drive servo electric cylinder (201) is fixedly connected to an electric cylinder fixing seat, and the electric cylinder fixing seat is fixedly connected to the left main frame (103).

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