Eccentric link type vibrating conveyor eccentric adjustment device and method

Abstract

The application discloses an eccentric adjusting device and method of an eccentric connecting rod type vibration conveyor, which comprises a magnetic base, a linear motor, a micro-motion horizontal adjusting mechanism, a first laser alignment device, a second laser alignment device, a rudder and a controller. The magnetic base is used for setting a standard plane relative to the groove bottom. The linear motor and the micro-motion horizontal adjusting mechanism are used for positioning the center of the eccentric shaft in cooperation with the first laser alignment device. The second laser alignment device cooperates with the rudder to provide an adjusting reference of the eccentric angle of the eccentric shaft. The adjusting process can be completed by adjusting the operation nut of the screw rod connecting rod of the transmission assembly of the vibration conveyor and reading the state of the second laser alignment device through the controller, and the adjusting process is fast and simple.

Description

Technical Field

[0001] This invention relates to the field of tobacco machinery technology, and more specifically, to an eccentric adjustment device and method for an eccentric linkage type vibrating conveyor. Background Technology

[0002] Vibrating conveyors transport materials using reciprocating vibrating troughs. Due to their advantages of simple structure, light weight, low energy consumption, and low cost, they are widely used in tobacco processing production lines.

[0003] The principle of a vibrating conveyor is based on the vibration action created by reciprocating eccentric motion. Therefore, the setting of the kinematic parameters of the trough is very important.

[0004] In silk production lines, the most widely used type of vibrating conveyor is the eccentric linkage vibrating conveyor, which includes a trough, a support, a counterweight frame, and a transmission system. The trough, support, and counterweight frame are connected by multiple sets of rockers. The transmission assembly is mounted on the support. The motor drives the eccentric shaft of the transmission assembly to rotate through a V-belt. The eccentric shaft drives the counterweight frame to swing within a certain angle through a lead screw and connecting rod. The counterweight frame drives the trough to vibrate through multiple sets of rockers, thereby conveying the material.

[0005] The entire system, when simplified, is a crank-rocker mechanism with the crank as the driving component.

[0006] Since the shock absorbers in the transmission assembly are made of rubber, they deform and age after a period of operation, affecting the conveying effect and requiring replacement. After replacement, the parameters of the entire eccentric system need to be readjusted. Currently, maintenance mainly relies on experienced maintenance workers who adjust the eccentric angle by adjusting the length of the lead screw and connecting rod. The efficiency is acceptable, but the accuracy is not precise and can only be within a roughly usable range. If newcomers are involved, they can only measure the motor load current and adjust the length of the lead screw and connecting rod, making multiple adjustments and starting and stopping verifications, which is very cumbersome, time-consuming, and labor-intensive, and is not conducive to ensuring production efficiency.

[0007] Therefore, how to provide an eccentric adjustment device for an eccentric linkage type vibratory conveyor that can automatically complete calibration during the adjustment process and has high adjustment efficiency has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing an eccentric adjustment device for an eccentric linkage type vibratory conveyor that can automatically complete calibration during the adjustment process and has high adjustment efficiency.

[0009] According to one aspect of the present invention, an eccentric adjustment device for an eccentric linkage type vibratory conveyor is provided, comprising a magnetic base, a linear motor, a micro-motion level adjustment mechanism, a first laser alignment device, and a second laser alignment device;

[0010] The magnetic base is fixed to the side wall of the vibrating groove, and the lower surface of the magnetic base is flush with the lower surface of the groove; the linear motor is fixed to the magnetic base, and the linear motor has a slide rail perpendicular to the lower surface of the magnetic base; the micro-motion horizontal adjustment mechanism moves vertically along the slide rail; the micro-motion horizontal adjustment mechanism is equipped with a servo motor capable of horizontal displacement and rotation.

[0011] The first laser alignment device has its transmitting end mounted on the servo motor and its receiving end mounted on the eccentric shaft of the vibrating conveyor to determine the stopping position of the servo motor; the second laser alignment device has its transmitting end mounted on the side wall of the servo motor and its receiving end mounted on the lower surface of the magnetic base to determine the eccentric angle of the servo motor.

[0012] Optionally, in the eccentric adjustment device for the eccentric linkage type vibratory conveyor according to the present invention, the output shaft of the servo motor is provided with a coaxially arranged circular mounting plate, the emitting end of the first laser alignment device is disposed on the circular mounting plate, and the projection of the first laser alignment device is dot-shaped.

[0013] Optionally, in the eccentric adjustment device for the eccentric linkage type vibratory conveyor according to the present invention, the emitting end of the second laser alignment device is disposed in the middle of the output shaft of the servo motor, and the projection of the second laser alignment device is linear, with its projection direction perpendicular to the output shaft of the servo motor.

[0014] Optionally, according to the eccentric adjustment device for an eccentric linkage type vibratory conveyor according to the present invention, the receiving end of the second laser alignment device includes a first receiving end and a second receiving end. The first receiving end is disposed on the lower surface of the magnetic base, and the second receiving end is disposed at the keyway locking hole of the eccentric shaft of the vibratory conveyor. When both the first receiving end and the second receiving end receive the light emitted by the emitting end of the second laser alignment device, the adjustment ends.

[0015] Optionally, in the eccentric adjustment device for the eccentric linkage type vibrating conveyor according to the present invention, the frequencies of the first laser aligner and the second laser aligner are the same or different.

[0016] According to a second aspect of the present invention, an eccentricity adjustment method for an eccentric linkage type vibrating conveyor is also provided, comprising the eccentricity adjustment device for an eccentric linkage type vibrating conveyor described in the above embodiments and the following steps:

[0017] Step S1: Baseline positioning. By aligning the transmitter and receiver of the first laser alignment device, the stop position of the linear motor and the micro-motion horizontal adjustment mechanism is determined.

[0018] Step S2: Angle positioning. Rotate the servo motor to align the transmitter of the second laser alignment device with the receiver of the first laser alignment device to form a set angle.

[0019] Step S3: Calibration. Fix the second receiving end to the keyway locking hole of the eccentric shaft of the vibratory conveyor.

[0020] Step S4: Adjust the length of the lead screw of the vibratory conveyor by manually turning the operating nut. The second receiving end will rotate accordingly. Stop adjusting when the second receiving end detects the light from the second laser alignment device.

[0021] Optionally, in the eccentric adjustment method of the eccentric linkage type vibrating conveyor according to the present invention, in step S1, the controller controls the linear motor and the micro-motion horizontal adjustment mechanism to move in a scanning manner, and determines the stop position of the linear motor and the micro-motion horizontal adjustment mechanism according to the sensing of the transmitting end and receiving end of the first laser alignment device.

[0022] Optionally, according to the eccentricity adjustment method of the eccentric linkage type vibrating conveyor of the present invention, in step S4, if the controller reads that both the first receiving end and the second receiving end have received the light emitted by the transmitting end of the second laser alignment device, then the adjustment ends;

[0023] If the controller reads that the first receiver has lost light, issues a misalignment alarm, and controls the servo motor to rotate back until the first receiver can obtain light again, then manually turn the operating nut of the vibrating conveyor's lead screw and repeat step S4 until both the first and second receivers receive light emitted from the transmitter of the second laser alignment device, then the adjustment ends.

[0024] This invention has outstanding substantive features and significant progress compared to the prior art. Specifically, this invention has the following advantages:

[0025] 1. Based on the equipment parameters and the dimensions of various components on the equipment, it was found that the angle between the axial center plane of the keyway and the bottom surface of the keyway is a specific angle, and is directly related to the eccentricity of the eccentric shaft in the transmission assembly, thus leading to the technical solution of this application.

[0026] By setting a standard plane for the magnetic base to replace the bottom surface of the slot, a reference is provided for subsequent adjustment and calibration. Through two-dimensional adjustment of the linear motor and the micro-motion level adjustment mechanism, in conjunction with the emission and reception sensing of the first laser alignment device, the location of the eccentric shaft in the transmission assembly is determined. Through the cooperation of the emission end of the second laser alignment device and the two receiving ends, the setting and adjustment of the eccentric angle can be completed. The operator only needs to be responsible for the nut on the lead screw connecting rod in the knob transmission assembly. The calibration reminder is automated, which greatly simplifies the adjustment difficulty and improves the adjustment accuracy.

[0027] 2. The entire device is fixed to the tank by magnetic attraction and can be removed after adjustment without damaging the tank structure.

[0028] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0030] Figure 1 This is a partial structural diagram of a prior art vibrating conveyor in this invention.

[0031] Figure 2 This is a schematic diagram of the transmission assembly in this invention.

[0032] Figure 3 This is a schematic diagram of the eccentric adjustment device of the eccentric linkage type vibrating conveyor in the present invention, showing its installation state.

[0033] Figure 4 This is a schematic diagram of the servo motor and laser alignment device in this invention.

[0034] Figure 5 This is a schematic diagram of the invention before adjustment.

[0035] Figure 6 This is the adjusted schematic diagram of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Base frame; 2. Tank body; 3. Counterweight frame; 4. Rocker arm; 5. Transmission assembly; 6. Eccentric shaft; 7. Lead screw connecting rod; 8. Operating nut;

[0038] 11. Magnetic base; 12. Linear motor; 13. Micro-motion leveling mechanism; 14. First laser alignment device; 15. Second laser alignment device; 16. Servo motor;

[0039] 61. Spindle; 62. Keyway locking hole;

[0040] 141. The transmitting end of the first laser; 142. The receiving end of the first laser;

[0041] 151. The transmitting end of the second laser; 152. The first receiving end; 153. The second receiving end;

[0042] 161. Output shaft; 162. Circular mounting plate. Detailed Implementation

[0043] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0044] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0045] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0046] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0048] according to Figure 1 As shown, the conventional eccentric linkage type vibrating conveyor in this prior art includes a base frame 1, a trough 2, and a counterweight frame 3, which are connected by rocker arms 4. The transmission assembly 5 is mounted on the support. The motor drives the eccentric shaft 6 of the transmission assembly 5 to rotate through a V-belt. The eccentric shaft 6 drives the counterweight frame 3 to swing within a certain angle through a lead screw and connecting rod 7. The counterweight frame 3 drives the trough 2 to vibrate through multiple sets of rocker arms 4, thereby conveying the material.

[0049] By adjusting and testing multiple vibrating conveyors in the workshop, it was first confirmed that the eccentric angle of the eccentric linkage conveyor should be 81° (the angle between the axial center plane of the keyway and the bottom surface of the trough 2). Based on this premise, the following device and usage were designed.

[0050] according to Figures 2 to 6As shown, the present invention provides an eccentric adjustment device for an eccentric linkage type vibratory conveyor, including a magnetic base 11, a linear motor 12, a micro-motion horizontal adjustment mechanism 13, a first laser alignment device 14, and a second laser alignment device 15. A background controller controls the operation of the linear motor 12, the micro-motion horizontal adjustment mechanism 13, the first laser alignment device 14, and the second laser alignment device 15 via circuitry.

[0051] The magnetic base 11 is fixed on the side wall of the groove 2 of the vibrating groove, and the lower surface of the magnetic base 11 is flush with the lower surface of the groove 2. The lower surface of the magnetic base 11 is a standard plane, mainly used to align with the bottom surface of the groove 2, and to replace the bottom surface of the groove 2 as a calibration reference.

[0052] The linear motor 12 is fixed on the magnetic base 11, and the linear motor 12 has a slide rail perpendicular to the lower surface of the magnetic base 11. The micro-motion horizontal adjustment mechanism 13 moves vertically along the slide rail. The micro-motion horizontal adjustment mechanism 13 is equipped with a servo motor 16 capable of horizontal displacement and rotation. The linear motor 12 and the micro-motion horizontal adjustment mechanism 13 constitute a two-dimensional, two-way adjustment mechanism.

[0053] The emitting end 141 of the first laser is disposed on the servo motor 16, and the receiving end 142 of the first laser is a movable end with adhesive or a magnetic block on its back, for fixing it at the axis 61 of the eccentric shaft 6 of the transmission assembly 5. The emitting direction of the emitting end 141 of the first laser is the same as the orientation of the output shaft 161 of the servo motor 16. The projection of the first laser alignment device 14 on the motion plane is a point.

[0054] The second laser alignment device 15 also includes a transmitter and a first receiver 152 and a second receiver 153. The transmitter 151 of the second laser is installed in the middle of the output shaft 161 of the servo motor 16. The emission direction of the transmitter 151 of the second laser is perpendicular and parallel to the motion plane constructed by the linear motor 12 and the micro-motion level adjustment mechanism 13. The projection of the second laser alignment device 15 on the motion plane is linear. The linear laser emitted by the transmitter 151 of the second laser has projections on both the standard plane and the end face of the eccentric shaft 6 of the vibrating conveyor transmission assembly 5. The linear projection always passes through the point projection. The first receiver 152 and the second receiver 153 are both movable ends and have glue or magnetic blocks on their backs. The first receiver 152 is installed on the standard plane for determining the eccentric angle, and the second receiver 153 is installed at the keyway locking hole 62 of the eccentric shaft 6 for calibration during the adjustment process. Optionally, in the eccentric adjustment device of the eccentric linkage type vibratory conveyor according to the present invention, the output shaft 161 of the servo motor 16 is provided with a coaxially arranged circular mounting plate 162, the emitting end 141 of the first laser is disposed on the circular mounting plate 162, and the projection of the first laser alignment device 14 is dot-shaped.

[0055] Furthermore, the frequencies of the first laser alignment device 14 and the second laser alignment device 15 may be the same or different, and they are independent of each other.

[0056] According to a second aspect of the present invention, an eccentricity adjustment method for an eccentric linkage type vibrating conveyor is also provided, comprising the eccentricity adjustment device for an eccentric linkage type vibrating conveyor described in the above embodiments and the following steps:

[0057] First, install the magnetic base 11 and adjust its position to be approximately equal to that of the transmission assembly 5, especially ensuring that the orientation of the linear motor 12 is close to the position of the eccentric shaft 6, in order to reduce the subsequent scanning and positioning time.

[0058] Step S1: Baseline positioning. By aligning the transmitter 141 and receiver of the first laser, the stopping positions of the linear motor 12 and the micro-motion leveling mechanism 13 are determined. The receiver 142 of the first laser is fixed to the axis 61 of the eccentric shaft 6 of the vibrating conveyor transmission assembly 5. The controller controls the linear motor 12 and the micro-motion leveling mechanism 13 to move in a scanning manner. Based on the sensing of the transmitter 141 and receiver of the first laser, i.e., whether the receiver receives a laser signal, the stopping positions of the linear motor 12 and the micro-motion leveling mechanism 13 are determined, thus completing the determination of the axis 61.

[0059] Step S2, Angle Positioning: Rotate the servo motor 16 to align the emitting end 151 of the second laser with the receiving end 152, forming a set angle. Based on the installation angle of the emitting end 151 of the second laser, the controller controls the servo motor 16 to rotate, so that the emission direction of the second laser alignment device 15 forms a set angle with the standard plane and projects a straight line onto the standard plane. The set angle is the aforementioned 81°. The first receiving end 152 is fixed at the projected position on the standard plane for positioning.

[0060] Step S3, Calibration: Fix the second receiving end 153 to the keyway locking hole 62 of the eccentric shaft 6 of the vibratory conveyor. Then fix the second receiving end 153 to the keyway locking hole 62 of the eccentric shaft 6 of the vibratory conveyor transmission assembly 5 for calibration. The reason for this design is that during the adjustment process, the transmission of mechanical forces such as friction may cause multiple parts to move together, affecting the adjustment accuracy. Therefore, double calibration is required.

[0061] Step S4: Adjustment. Manually turn the operating nut 8 of the lead screw connecting rod 7 of the vibratory conveyor to adjust the length of the lead screw connecting rod 7. At this time, the second receiving end 153 will rotate the angle accordingly. When the second receiving end 153 detects the light from the second laser alignment device 15, stop the adjustment.

[0062] Furthermore, in step S1, the controller controls the linear motor 12 and the micro-motion leveling mechanism 13 to move in a scanning manner, and determines the stop position of the linear motor 12 and the micro-motion leveling mechanism 13 based on the sensing of the transmitter and receiver of the first laser alignment device 14.

[0063] Furthermore, in step S4, if the controller reads that both the first receiving end 152 and the second receiving end 153 have received light emitted from the emitting end 151 of the second laser, then the adjustment ends.

[0064] If the controller reads that the first receiver 152 has lost light, issues a misalignment alarm, and controls the servo motor 16 to rotate back until the first receiver 152 receives light again, then manually rotates the operating nut 8 of the lead screw connecting rod 7 of the vibrating conveyor to repeat step S4 until both the first receiver 152 and the second receiver 153 receive the light emitted by the transmitter 151 of the second laser, then the adjustment ends.

[0065] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. An eccentricity adjustment device for an eccentric linkage type vibrating conveyor, characterized in that, It includes a magnetic base, a linear motor, a micro-motion leveling mechanism, a first laser alignment device, and a second laser alignment device; The magnetic base is fixed to the side wall of the vibrating groove, and the lower surface of the magnetic base is flush with the lower surface of the groove; the linear motor is fixed to the magnetic base, and the linear motor has a slide rail perpendicular to the lower surface of the magnetic base; the micro-motion horizontal adjustment mechanism moves vertically along the slide rail; the micro-motion horizontal adjustment mechanism is equipped with a servo motor capable of horizontal displacement and rotation. The first laser alignment device has its transmitting end mounted on the servo motor and its receiving end mounted on the eccentric shaft of the vibrating conveyor to determine the stopping position of the servo motor; the second laser alignment device has its transmitting end mounted on the side wall of the servo motor and its receiving end mounted on the lower surface of the magnetic base to determine the eccentric angle of the servo motor. The output shaft of the servo motor is provided with a circular mounting plate arranged coaxially, the emitting end of the first laser alignment device is arranged on the circular mounting plate, and the projection of the first laser alignment device is dot-shaped; The emitting end of the second laser alignment device is located in the middle of the output shaft of the servo motor, and the projection of the second laser alignment device is linear, with its projection direction perpendicular to the output shaft of the servo motor. The receiving end of the second laser alignment device includes a first receiving end and a second receiving end. The first receiving end is disposed on the lower surface of the magnetic base, and the second receiving end is disposed at the keyway locking hole of the eccentric shaft of the vibrating conveyor. When both the first receiving end and the second receiving end receive the light emitted by the emitting end of the second laser alignment device, the adjustment ends.

2. The eccentric adjustment device for an eccentric linkage type vibrating conveyor according to claim 1, characterized in that, The first laser alignment device and the second laser alignment device may have the same or different frequencies.

3. A method for adjusting the eccentricity of an eccentric linkage type vibrating conveyor, characterized in that, Using the eccentric adjustment device for the eccentric linkage type vibratory conveyor as described in claim 1 and the following steps: Step S1: Baseline positioning. By aligning the transmitter and receiver of the first laser alignment device, the stop position of the linear motor and the micro-motion horizontal adjustment mechanism is determined. Step S2: Angle positioning. Rotate the servo motor to align the transmitter of the second laser alignment device with the receiver of the first laser alignment device to form a set angle. Step S3: Calibration. Fix the second receiving end to the keyway locking hole of the eccentric shaft of the vibratory conveyor. Step S4: Adjust the length of the lead screw of the vibratory conveyor by manually turning the operating nut. The second receiving end will rotate accordingly. Stop adjusting when the second receiving end detects the light from the second laser alignment device.

4. The eccentricity adjustment method for an eccentric linkage type vibrating conveyor according to claim 3, characterized in that, In step S1, the controller controls the linear motor and the micro-motion leveling mechanism to move in a scanning manner, and determines the stop position of the linear motor and the micro-motion leveling mechanism based on the sensing of the transmitter and receiver of the first laser alignment device.

5. The eccentricity adjustment method for an eccentric linkage type vibrating conveyor according to claim 3, characterized in that, In step S4, if the controller reads that both the first receiving end and the second receiving end have received the light emitted from the transmitting end of the second laser alignment device, then the adjustment ends. If the controller reads that the first receiver has lost light, issues a misalignment alarm, and controls the servo motor to rotate back until the first receiver can obtain light again, then manually turn the operating nut of the vibrating conveyor's lead screw and repeat step S4 until both the first and second receivers receive light emitted from the transmitter of the second laser alignment device, then the adjustment ends.

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