CN114130451B

CN114130451B - Abrasive belt deflection adjusting device and grinding equipment

Info

Publication number: CN114130451B
Application number: CN202010919967.5A
Authority: CN
Inventors: 王彪; 邓华平; 林龙祥
Original assignee: Quzhou Kumisainuo Grains Machinery Manufacturing Co ltd; Mai Dao Intelligent Grain Co ltd
Current assignee: Quzhou Kumisainuo Grains Machinery Manufacturing Co ltd; Mai Dao Intelligent Grain Co ltd
Filing date: 2020-09-04
Publication date: 2024-06-04
Anticipated expiration: 2040-09-04

Abstract

The invention provides an abrasive belt deflection adjusting device and grinding equipment, and belongs to the field of grinding devices. The invention provides an abrasive belt deflection adjusting device, which comprises: a detection mechanism for detecting an offset position of the abrasive belt relative to the main drum in a main drum axis direction; the deviation adjusting mechanism is used for controlling the abrasive belt to move upwards or downwards along the axis direction of the main roller; the control unit is used for controlling the deviation adjusting mechanism to adjust the abrasive belt; wherein, the accent partially mechanism includes: the device comprises a deflection adjusting shaft, a first swing rod, a second swing rod and a deflection adjusting driving piece. The invention can detect whether the abrasive belt is offset in real time, and once the offset is generated, the offset adjusting mechanism immediately responds so as to ensure that the abrasive belt moves up and down in a certain range in the middle of the roller, so that the reliability of the whole device is higher.

Description

Abrasive belt deflection adjusting device and grinding equipment

Technical Field

The invention relates to a grinding device, in particular to an abrasive belt deflection adjusting device and grinding equipment.

Background

Milling equipment is equipment for milling large particulate matter into small particulate matter. Such as rice mills, are a relatively common milling device that functions to peel brown rice to form polished rice.

Conventional rice mills typically employ the extrusion principle, which tends to result in breakage of the rice grains. In order to reduce the breakage of rice grains, some prior art devices have been developed that employ belt grinding for peeling. For example, chinese patent CN102553667a discloses a high-performance energy-saving sand belt rice mill, which comprises a frame, a feeding device, a discharging device, a whitening chamber and a roller with an abrasive belt arranged on the outer wall, wherein the roller is vertically arranged, the abrasive belt is sleeved on the roller, the feeding device and the discharging device are respectively positioned above and below the roller, and the whitening chamber surrounds the abrasive belt; when the abrasive belt is driven by the roller, the abrasive belt can move relative to the whitening chamber, so that rice grains in the whitening chamber are milled, and peeling is completed.

However, in the above rice mill, since the drum is vertically disposed, the abrasive belt is affected by gravity during operation, which inevitably slides downward, not only results in a reduction in the rice milling efficiency of the rice mill, but also damages the abrasive belt by serious factors, even resulting in a stoppage of the apparatus.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an abrasive belt deflection adjusting device and a grinding apparatus that can adjust an abrasive belt according to a real-time state of the abrasive belt.

The invention provides a belt deflection adjusting device, which is arranged in a grinding device with a main roller, a tensioning roller sleeve and a belt arranged outside the main roller and the tensioning roller, and has the characteristics that: a detection mechanism for detecting an offset position of the abrasive belt relative to the main drum in a main drum axis direction; the deviation adjusting mechanism is used for controlling the abrasive belt to move upwards or downwards along the axis direction of the main roller; the control unit is used for controlling the deviation adjusting mechanism to adjust the abrasive belt; wherein, the accent partially mechanism includes: the deflection adjusting shaft is arranged above the tensioning roller; the first swing rod is arranged on the deflection adjusting shaft in a penetrating way; the second swing rod is arranged in parallel with the tensioning roller, one end of the second swing rod is connected with the first swing rod, and the other end of the second swing rod is connected with the tensioning roller and is used for driving the tensioning roller to swing; the deflection adjusting bottom plate is used for supporting the deflection adjusting shaft; the deviation adjusting driving piece is used for driving the first swing rod to rotate around the deviation adjusting shaft under the control of the control unit so as to realize the ascending or descending of the abrasive belt on the main roller along the axis direction of the main roller, the detection mechanism comprises a plurality of photoelectric switch pieces, the photoelectric switch pieces are arranged above the abrasive belt between the main roller and the tensioning roller, and the detection positions of the detection parts of the photoelectric switch pieces correspond to the deviation positions.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: wherein, tensioning mechanism includes: the tensioning bottom plate is in sliding connection with the deflection adjusting bottom plate; and the upper tensioning driving piece is arranged on the tensioning bottom plate and used for driving the deviation adjusting bottom plate to move relative to the tensioning bottom plate so as to enable the tensioning roller to be far away from the main roller.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: wherein, tensioning mechanism still includes: the lower tensioning driving piece is arranged below the second swing rod and used for driving the deflection adjusting bottom plate to move relative to the tensioning bottom plate, so that the tensioning roller is far away from the main roller.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: wherein, still include: the speed regulating mechanism is used for limiting the rotation amplitude of the first swing rod so as to control the ascending or descending speed of the sand belt, wherein the speed regulating mechanism comprises: the pair of speed regulating parts is installed on the deviation adjusting bottom plate, and along the relative setting of first pendulum rod, every speed regulating part includes: and one side of the speed regulating slide block, which is close to the first swing rod, forms an included angle with the first swing rod, and the speed regulating screw rod is matched with the speed regulating slide block to form a screw rod for controlling the speed regulating slide block to move along the length direction of the speed regulating screw rod.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: the number of the photoelectric switch pieces is four, and the four photoelectric switches are respectively: the first photoelectric switch is used for sending out an upper limit stop signal when the detection position of the first photoelectric switch corresponds to the upper limit of the offset position of the abrasive belt in the vertical direction and the offset position of the abrasive belt is higher than or equal to the upper limit alarm position; the second photoelectric switch is used for sending a downlink signal when detecting that the offset position of the abrasive belt is higher than the downlink return position; the third photoelectric switch is used for sending an uplink signal when the detection position of the third photoelectric switch corresponds to the uplink return position of the offset position of the abrasive belt in the vertical direction and is lower than the uplink return position; and a fourth photoelectric switch, the detection position of which corresponds to the lower limit of the offset position of the abrasive belt in the vertical direction, and is used for sending out a lower limit stop signal when the offset position of the abrasive belt is detected to be lower than or equal to the lower limit alarm position.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: when the control unit receives the upper limit stop signal or the lower limit stop signal, the rotary driving mechanism is controlled to stop running, when the control unit receives the uplink signal, the deviation adjusting mechanism is controlled to drive the abrasive belt to deviate downwards, and when the control unit receives the downlink signal, the deviation adjusting mechanism is controlled to drive the abrasive belt to deviate upwards.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: wherein, photoelectric switch spare is slot type photoelectric switch, and slot type photoelectric switch includes: a left side arm provided with a luminous body; a right side arm provided with a light receiver for receiving light emitted by the light emitter; and the suspension arm is used for connecting the left side arm and the right side arm so as to form a U-shaped groove for the abrasive belt to pass through, the luminous body and the light receiving body form a detection part, and the opposite position of the luminous body and the light receiving body is the detection position.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: wherein, the deviation adjusting mechanism still includes: the deflection adjusting shaft cover is arranged on the deflection adjusting shaft and used for preventing dust from entering the deflection adjusting shaft.

In the belt deflection adjusting device provided by the invention, the belt deflection adjusting device can be characterized by comprising the following steps: wherein the control unit is a programmable logic controller.

The invention also provides a milling apparatus having the following features: comprising the following steps: the belt tensioning device comprises a main roller, a tensioning roller sleeve, abrasive belts arranged on the outer sides of the main roller and the tensioning roller, and an abrasive belt deflection adjusting device for controlling the abrasive belts to move upwards or downwards along the axis direction of the main roller, wherein the abrasive belt deflection adjusting device is any one of the abrasive belt deflection adjusting devices.

Effects and effects of the invention

According to the abrasive belt deflection adjusting device, the abrasive belt deflection adjusting device comprises the detecting mechanism, the deflection adjusting mechanism and the control unit, wherein the detecting mechanism is used for sending corresponding signals to the deflection adjusting mechanism when detecting that the deflection position of the abrasive belt reaches the detecting position, and the deflection adjusting mechanism is used for adjusting the position of the abrasive belt.

Drawings

FIG. 1 is a schematic view of the structure of a milling apparatus (without abrasive belt and detection mechanism) in an embodiment of the invention;

FIG. 2 is a schematic view of the installation of a detection mechanism in a milling apparatus in an embodiment of the present invention;

FIG. 3 is a schematic view of the construction of a main drum, a tensioning drum and an abrasive belt in an embodiment of the invention;

FIG. 4 is a side view of a deviation adjustment structure in a belt deviation adjustment device in accordance with an embodiment of the present invention;

FIG. 5 is a top view of a deflection adjustment structure in a belt deflection adjustment device in accordance with an embodiment of the present invention;

FIG. 6 is a side view of a tensioning mechanism in a belt deflection adjustment device in accordance with an embodiment of the present invention;

FIG. 7 is a top view of a tensioning mechanism in a belt deflection adjustment device in accordance with an embodiment of the present invention;

FIG. 8 is a top view of the timing mechanism of the belt deflection adjustment device in an embodiment of the present invention;

FIG. 9 is a side view of a timing mechanism in a belt deflection adjustment device in accordance with an embodiment of the present invention;

FIG. 10 is a schematic diagram of the mechanism of the detection mechanism in the belt deflection adjustment device in accordance with an embodiment of the present invention; and

Fig. 11 is a schematic structural view of an optoelectronic switch in a sand belt deflection adjusting device in an embodiment of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement of the purpose and the effect of the present invention easy to understand, the present invention is specifically described below with reference to the embodiments and the drawings.

< Example >

Fig. 1 is a schematic view of the structure of a milling apparatus (without abrasive belt and detection mechanism) in an embodiment of the invention. Fig. 2 is a schematic view of the installation of a detection mechanism in a milling apparatus in an embodiment of the present invention. Fig. 3 is a schematic view of the structure of the main drum, the tension drum and the sanding belt in an embodiment of the present invention.

As shown in fig. 1-3, the present embodiment provides a milling apparatus comprising a drum 10, a tensioning drum 20, an abrasive belt 30, a deviation adjusting mechanism 40, a tensioning mechanism 50, a speed regulating mechanism 60, a detecting mechanism 70 and a control unit (not shown).

The main drum 10 includes a drum body 11, a main drum shaft 12, an upper cover 13, a lower cover 14, and a partition 15.

The cylinder 11 is cylindrical, is vertically arranged on a horizontal plane, and the end face is parallel to the horizontal plane. The main drum shaft 12 is arranged at the axis of the drum body in a penetrating way and is driven by the rotary driving mechanism to drive the drum body 11 to rotate. The upper cover 13 is installed above the end surface of the cylinder 11 in fig. 2, and the lower cover 14 is installed below the end surface of the cylinder 11 in fig. 2. The upper and lower cover plates 13, 14 are rotatably connected with respect to the drum 11 and the main drum shaft 12, i.e. the upper and lower cover plates 13, 14 do not follow rotation when the drum 11 and the main drum shaft 12 are rotated. A partition 15 is provided between the main drum 10 and the tension drum 20, both ends of which are fixedly installed on the upper cover 13 and the lower cover 14, respectively, and the partition 15 serves to isolate the main drum 10 and the tension drum 20.

The tension roller 20 includes: tensioning cylinder 21 and housing 22.

The tensioning cylinder 21 is cylindrical and has a diameter smaller than that of the cylinder 11, and its end face is parallel to the end face of the cylinder 11 of the main cylinder 10. The housing 22 is rotatably connected to the tensioning cylinder 21, i.e. the housing 22 does not follow the rotation when the tensioning cylinder 21 rotates. The cover 22 forms a semi-surrounding structure with the tensioning cylinder 21, specifically, the cover 22 covers part of the side surface of the tensioning cylinder 21, but the cover 22 is close to the inner side surface of the tensioning cylinder 21 and does not contact when the tensioning cylinder 21 rotates. The specific area of cover 22 covering tensioning cylinder 21 may be set according to specific requirements, and it is preferable not to reduce the contact area between abrasive belt 30 and tensioning cylinder 21. In this embodiment, the cover 22 covers 50% of the side of the tensioning cylinder 21 that is closer to the main cylinder 10.

The abrasive belt 30 is sleeved outside the cylinder 11 of the main cylinder 10 and the tensioning cylinder 21 of the tensioning cylinder 20 to form a complete sand roller structure.

Fig. 4 is a side view of a deviation adjusting structure in a belt deviation adjusting device in an embodiment of the present invention. Fig. 5 is a top view of a deflection regulating structure in a belt deflection regulating device in accordance with an embodiment of the present invention.

As shown in fig. 4 to 5, the deviation adjusting mechanism 40 includes: the deflection adjusting base plate 41, the deflection adjusting shaft 42, the deflection adjusting shaft cover 43, the first swing rod 44, the deflection adjusting collision block 45, the deflection adjusting moving block 46, the second swing rod 47 and the deflection adjusting driving piece 48.

The deflection adjusting bottom plate 41 is disposed above the end surface of the main drum 10 and is disposed in parallel with the end surface of the main drum 10. The deflection adjusting base plate 41 has a bar-shaped hole through which the second swing rod 47 passes and can swing, and in other embodiments, the shape and size of the hole can be adaptively adjusted according to the range of the second swing rod 47 that is actually required to swing.

The deflection adjusting shaft 42 is fixedly arranged on the upper surface of the deflection adjusting bottom plate 41.

The deflection-adjusting shaft cover 43 is provided above the deflection-adjusting shaft 42 for preventing foreign matters from entering the deflection-adjusting shaft 42, thereby ensuring the reliability of the operation of the deflection-adjusting shaft 42.

The first swing link 44 is disposed parallel to the deflection adjusting base plate 41, and the first swing link 44 is disposed on the deflection adjusting shaft 42 in a penetrating manner so that the first swing link 44 can rotate around the deflection adjusting shaft 42 as an axis. The distance between the two ends of the first swing rod 44 and the deflection adjusting shaft 42 can be adjusted according to practical situations, and in this embodiment, the distances between the two ends of the first swing rod and the deflection adjusting shaft 42 are equal.

The offset bump block 45 is disposed at one end of the first swing link 44, and the bottom of the offset bump block 45 is not in contact with the offset bottom plate 41, so that the resistance received by the first swing link 44 during rotation can be reduced. In this embodiment, the yaw alignment block 45 has a larger surface area, so that the yaw alignment driving member 48 can accurately push the yaw alignment block 45 to rotate around the yaw axis 42.

The offset adjusting and moving block 46 is disposed at the other end far away from the offset adjusting and touching block 45, in this embodiment, the offset adjusting and moving block 46 is an offset adjusting ball head member, and an offset adjusting ball head cover for covering the offset adjusting ball head member can be disposed on the offset adjusting ball head member according to practical situations, and the offset adjusting ball head cover is used for preventing foreign matters from entering the offset adjusting ball head member, so as to ensure the reliability of the operation of the offset adjusting ball head member.

The second swing link 47 is disposed in parallel with the tension roller 20. One end of the second swing rod 47 is formed with a hook part, the hook part is penetrated at the bottom of the deflection adjusting moving block 46, and the other end penetrates the deflection adjusting bottom plate 41 to extend downwards. The other end of the second swing link 47 is provided with a deviation adjusting rotation shaft 401, and the second swing link 47 is connected with the housing 22 of the tensioning roller 20 through the deviation adjusting rotation shaft 401. When the second swing rod 47 swings, the deviation adjusting rotating shaft 401 is driven to rotate, so that the tensioning roller 20 and the second swing rod 47 are driven to swing synchronously. In this embodiment, the yaw adjustment shaft 401 is sleeved with a rotating bearing.

The bias adjustment driving member 48 includes: cylinder 481, cylinder block 482, Y-joint 483, double orifice plate 484, and offset cylinder plate 485. The cylinder block 482 is mounted on a side of the deviation adjusting bottom plate 41 adjacent to the deviation adjusting bottom plate 41 and is disposed perpendicular to the deviation adjusting bottom plate 41. The cylinder 481 is mounted on a cylinder block 482 and the cylinder rod is disposed toward the offset base plate 41. The Y-shaped joint 483 is arranged at the end of the cylinder rod of the cylinder 481 and is connected with the top of the deflection adjusting bump 45 through a double orifice plate 484. Through the connection, when the air cylinder 481 operates, the air cylinder rod stretches out to push the Y-shaped joint to advance towards the direction of the deflection adjusting collision block 45, and meanwhile, the deflection adjusting collision block 45 is driven to rotate around the deflection adjusting shaft 42 through the double-orifice plate 484. The deviation adjusting cylinder plate 485 is fixed on the deviation adjusting base plate 41 for supporting the cylinder 481 and the cylinder block 482.

Fig. 6 is a side view of a tensioning mechanism in a belt deflection adjustment device in an embodiment of the present invention. Fig. 7 is a top view of a tensioning mechanism in a belt deflection adjustment device in an embodiment of the present invention.

As shown in fig. 6-7, tensioning mechanism 50 is used to tension the belt and includes: an upper tensioning assembly and a lower tensioning assembly, wherein the upper tensioning assembly comprises: an upper tensioning cylinder 51, a tensioning bottom plate 52, a push plate 53, and a lower tensioning assembly comprising: lower tensioning cylinder 54 and support frame 55.

The tension base plate 52 is disposed below the deviation adjusting base plate 41 and is disposed parallel to the deviation adjusting base plate 41. The upper surface of the tensioning bottom plate 52 is provided with a sliding rail, and the extending direction of the sliding rail is parallel to the extending direction of the connecting line of the axis of the main roller 10 and the axis of the tensioning roller 20. The bottom of the deviation adjusting bottom plate 41 is provided with a sliding block matched with the sliding rail on the upper surface of the tensioning bottom plate 52, so that the tensioning bottom plate and the deviation adjusting bottom plate can be connected in a sliding mode. The tensioning bottom plate 52 and the upper cover plate 13 may be two independent plates or the same plate. In this embodiment, the tensioning base plate 52 and the upper cover plate 13 are two independent plates.

The upper tensioning cylinder 51 is mounted on a tensioning base plate 52. The push plate 53 is arranged on the deflection adjusting bottom plate 41, and can be pushed when the cylinder rod of the upper tensioning cylinder 51 stretches out, so that the deflection adjusting bottom plate 41 is driven to move along the sliding rail.

The support frame 55 is L-shaped and is arranged at the bottom of the second swing rod 47. The lower tensioning cylinder 54 is mounted on a support frame 55, the cylinder rod of the lower tensioning cylinder 54 facing the main drum. When the lower tensioning cylinder 54 is operated, its cylinder rod abuts against the partition 15, and since the partition 15 is fixedly provided, a reaction force is generated to the cylinder rod to drive the tensioning roller 20 away from the main roller 10.

Fig. 8 is a top view of a timing mechanism in a belt deflection adjustment device in accordance with an embodiment of the present invention. Fig. 9 is a side view of a timing mechanism in a belt deflection adjustment device in accordance with an embodiment of the present invention.

The speed adjusting mechanism 60 is used for limiting the rotation amplitude of the first swing rod so as to control the upward or downward speed of the sand belt, and comprises a pair of speed adjusting pieces which are arranged at two sides of the deviation adjusting bump 45 in a mirror symmetry mode by taking the first swing rod 44 as a symmetry axis.

Each speed regulating member includes: backing plate 61, speed regulation slider 62, briquetting 63 and speed regulation screw 64.

The pad 61 is mounted on the deflection-adjusting base plate 41.

The speed adjusting slider 62 is slidably disposed above the pad 61, and an edge of the side of the speed adjusting slider near the first swing link 44 forms an included angle with the first swing link 44, and in this embodiment, as shown in fig. 8, the width of the speed adjusting slider 62 gradually decreases from left to right. Speed control slide 62 is used to define the maximum amplitude of oscillation of first pendulum rod and thus the amplitude of oscillation of tensioning roller 20 and thus the speed of the up-down deflection of belt 30. In other embodiments, the bevel edge of the speed regulating slide block can be designed to be stepped or wavy, and can be designed to be bevel edge like the embodiment, but the width of the speed regulating slide block is gradually increased from left to right.

The speed adjusting screw 64 is inserted into the speed adjusting slide block 62, and forms a common screw rod fit with the speed adjusting slide block 62, so as to drive the speed adjusting slide block to move along the length direction of the speed adjusting screw 64 when the speed adjusting screw 64 rotates. In this embodiment, the end of the governor screw 64 away from the governor slider 62 has a knob, and the knob is located outside the deviation adjusting base plate 41, so that the convenience of use can be provided for the user.

The pressing block 63 is mounted on the backing plate 61 and covers the upper part of the speed regulating slide block 62, and is used for protecting the speed regulating screw 64 and a screw rod structure formed by the speed regulating slide block 62. In this embodiment, the pressing block on the side close to the deviation adjusting driving member 48 is the same component as the deviation adjusting cylinder plate 485. In other embodiments, the pressure block and the offset cylinder plate on the side near the offset drive member may be separate two components.

Fig. 10 is a schematic diagram of a mechanism of a detection mechanism in the belt deflection adjustment device in the embodiment of the present invention. Fig. 11 is a schematic structural view of an optoelectronic switch in a sand belt deflection adjusting device in an embodiment of the present invention.

As shown in fig. 10-11, detection mechanism 70, disposed over the belt between the main and tension drums, includes: four slot-type photoelectric switches 71 and a photoelectric switch support frame 72.

The photoelectric switch support frame 72 has a U-shaped groove for receiving the groove-shaped photoelectric switch 71. The top of the optoelectronic switch support frame 72 has four openings.

In the present embodiment, the four groove-type photoelectric switches 71 are identical in structure but different in function. Each of the slot type photoelectric switches 71 includes a photoelectric cell 711, a photoelectric cell hanging plate 712, and a photoelectric cell hanging rod 713.

The photo cell 711 includes a left side arm 711a, a right side arm 711b, and a boom 711c.

The left side arm 711a is fitted with a light emitter, which in this embodiment is an infrared emitter. The right side arm 711b is provided with a light receiving body, which in this embodiment is an infrared receiving tube for receiving light emitted from an infrared emitting tube. The side of the right arm 711b to which the infrared receiving tube is attached is disposed opposite to the side of the left arm 711a to which the infrared transmitting tube is attached. Boom 711c is used to connect left side arm 711a and right side arm 711b to form a U-shaped channel through which abrasive belt 30 passes.

A photocell suspension plate 712 is mounted on top of the photocell 711. The photo-electric box boom 713 is penetrated in an opening at the top of the photo-electric switch supporting frame 72 and is in threaded connection with the photo-electric switch supporting frame 72. The bottom of the photo cartridge boom 713 is fixedly connected with a photo cartridge boom plate 712. The user can adjust the height of the photo cell 711 by adjusting the photo cell boom 713.

The four groove-type photoelectric switches 71 are different in height from the upper edge of the abrasive belt 30. In the present embodiment, four groove-type photoelectric switches 71 are hereinafter referred to as a first photoelectric switch 71a, a second photoelectric switch 71b, a third photoelectric switch 71c, and a fourth photoelectric switch 71d, respectively, for convenience of description. The detection positions of the first photoelectric switch 71a, the second photoelectric switch 71b, the third photoelectric switch 71c, and the fourth photoelectric switch 71d correspond to the respective offset positions. Specifically, when first photoelectric switch 71a detects that the upward-offset position of abrasive belt 30 is higher than or equal to the upper limit alarm position, a stop signal is sent to the control unit. When second opto-electronic switch 71b detects that the offset position of abrasive belt 30 is higher than the downstream return position, a downstream signal is sent to the control unit. When third photoelectric switch 71c detects that the offset position of sanding belt 30 is lower than the upstream return position, an upstream signal is sent to the control unit. When fourth photoelectric switch 71d detects that the downward-shifted position of sanding belt 30 is lower than or equal to the lower limit alarm position, a stop signal is sent to the control unit.

The control unit is used for controlling the deviation adjusting mechanism 10 for adjusting the sanding belt 30 and for controlling the tensioning mechanism 50 for adjusting the distance between the tensioning roller 20 and the main roller 10. In this embodiment, the control unit is a programmable logic controller (i.e., PLC). Specifically, in this embodiment, the programmable logic controller controls the operation of each driving mechanism by adjusting the switch of the solenoid valve, thereby realizing the corresponding function. In this embodiment, the control units of the deviation adjusting mechanism 10 and the tensioning mechanism 50 are the same programmable logic controller, and in other embodiments, the control units of the deviation adjusting mechanism 10 and the tensioning mechanism 50 may be two mutually independent programmable logic controllers.

The working principle of the deviation adjusting mechanism of the abrasive belt deviation adjusting device provided by the embodiment is as follows:

when first photoelectric switch 31a detects that the upward displacement amount of abrasive belt 30 is equal to or larger than the upper limit alarm value, a stop signal is sent to the control unit. When fourth photoelectric switch 31d detects that the downward displacement of abrasive belt 30 is equal to or greater than the lower limit alarm value, a stop signal is sent to the control unit. When the control unit receives the stop signal, the driving member of the main drum 10 is controlled to stop operating through the electromagnetic valve.

When second opto-electronic switch 31b detects that the upward displacement of sanding belt 30 is greater than the downward return value, a downward signal is sent to the control unit. When third opto-electronic switch 31c detects that the downward offset of sanding belt 30 is greater than the upward return value, an upward signal is sent to the control unit.

When the control unit receives an uplink signal or a downlink signal, the deviation adjusting driving piece 48 is controlled by the electromagnetic valve to drive the first swing rod 44 to move around the deviation adjusting shaft 42, so that the second swing rod 47 is driven to swing, and the second swing rod 47 drives the tensioning roller 20 and the second swing rod 47 to swing synchronously through the deviation adjusting rotating shaft, so that a certain included angle is formed between the axis of the tensioning roller 20 and the axis of the main roller 10. When the axis of tensioning roller 20 has a certain angle with the axis of main roller 10, an adjustment of belt 30 is achieved. Taking fig. 2 as an example, when the belt is rotated clockwise, the belt 30 is shifted downward by controlling the tension roller 20 to swing upward in the drawing, and the belt 30 is shifted upward by controlling the tension roller 20 to swing downward in the drawing. And vice versa.

The tensioning mechanism of the abrasive belt deflection adjusting device provided by the embodiment has the following working principle:

when tensioning of the sanding belt 30 is required, a tensioning command is sent out in the control unit, and the control unit controls the upper tensioning cylinder 51 and the lower tensioning cylinder 54 to synchronously operate through the electromagnetic valve. The upper tensioning cylinder 51 pushes the deflection-adjusting bottom plate 41 away from the main roller 10 to drive the tensioning roller 20 away from the main roller 10. The lower tension cylinder 54 drives the tension roller 20 away from the main roller 10 by a reaction force formed by pushing the partition 15. Tensioning of sanding belt 30 is achieved when the distance between tensioning cylinder 20 and main cylinder 10 increases.

When belt 30 is required to relax, it is then necessary to manually push tensioning roller 20 in the direction of main roller 10.

The working principle of the speed regulating mechanism of the abrasive belt deflection regulating device provided by the embodiment is as follows:

The speed regulating slider 62 is operated in the length direction of the speed regulating screw 64 by manually rotating the speed regulating screw 64, thereby changing the swing range of the first swing link 44. The greater the amplitude of oscillation of first pendulum rod 44, the faster it will drive belt 30 up or down. And vice versa.

Effects and effects of the examples

According to the abrasive belt deflection adjusting device, the abrasive belt deflection adjusting device comprises the detection mechanism, the deflection adjusting mechanism and the control unit, wherein the detection mechanism is used for sending corresponding signals to the deflection adjusting mechanism when detecting that the deflection position of the abrasive belt reaches the detection position, and the deflection adjusting mechanism is used for adjusting the position of the abrasive belt.

Further, because the deviation adjusting mechanism comprises a deviation adjusting bottom plate, a deviation adjusting shaft, a first swing rod, a deviation adjusting collision block, a deviation adjusting moving block, a second swing rod and a deviation adjusting driving piece, wherein the deviation adjusting driving piece pushes the first swing rod to move around the deviation adjusting shaft, and accordingly the second swing rod is driven to swing and then the tensioning roller is driven to swing, and finally deviation adjusting of the abrasive belt is achieved, the deviation adjusting mechanism is exquisite in structure, reasonable in design and higher in deviation adjusting precision due to step-by-step linkage of the structure.

Further, because the abrasive belt deflection adjusting device of the embodiment further comprises a tensioning mechanism, wherein the tensioning mechanism comprises an upper tensioning piece and a lower tensioning piece, and the upper tensioning piece and the lower tensioning piece are used for pushing the tensioning roller to be away from the main roller so as to tension the abrasive belt, the tensioning mechanism of the embodiment can generate enough pushing force to ensure that the tensioning roller can be pushed, and the reliability is high.

Further, because the abrasive belt deflection adjusting device of the embodiment further comprises a speed adjusting mechanism, wherein the speed adjusting mechanism is used for limiting the maximum swing amplitude of the first swing rod through the sliding block to limit the maximum swing amplitude of the tensioning roller so as to adjust the abrasive belt deflection speed, the abrasive belt deflection adjusting device of the embodiment can realize more accurate control of the abrasive belt deflection speed, can accurately control the deflection speed in a reasonable section, and further reduces deflection adjusting errors.

The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.

Claims

1. An abrasive belt deflection adjustment device for installation in a grinding apparatus having a main drum, a tensioning drum jacket and an abrasive belt disposed outside the main drum and the tensioning drum, comprising:

A detection mechanism for detecting an offset position of the abrasive belt with respect to the main drum in the main drum axis direction;

the deviation adjusting mechanism is used for controlling the abrasive belt to ascend or descend along the axis direction of the main roller;

the control unit is used for controlling the deviation adjusting mechanism to adjust the abrasive belt; and

The speed regulating mechanism is arranged on the upper part of the lower part of,

Wherein, the accent partial shipment mechanism includes:

The deflection adjusting shaft is arranged above the tensioning roller;

the first swing rod is arranged on the deflection adjusting shaft in a penetrating manner;

the second swing rod is arranged in parallel with the tensioning roller, one end of the second swing rod is connected with the first swing rod, and the other end of the second swing rod is connected with the tensioning roller and is used for driving the tensioning roller to swing;

the deflection adjusting base plate is used for supporting the deflection adjusting shaft;

The deflection adjusting driving piece is used for driving the first swing rod to rotate around the deflection adjusting shaft under the control of the control unit so as to realize the ascending or descending of the abrasive belt on the main roller along the axis direction of the main roller,

The detection mechanism comprises a plurality of photoelectric switch pieces, the photoelectric switch pieces are arranged above the sand belt between the main roller and the tensioning roller, the detection positions of the detection parts of the photoelectric switch pieces correspond to the offset positions,

The speed regulating mechanism is used for limiting the rotation amplitude of the first swing rod so as to control the ascending or descending speed of the abrasive belt, and comprises the following components:

a pair of speed regulating parts which are arranged on the deflection regulating bottom plate and are oppositely arranged along the first swing rod,

Each speed regulating member includes:

One side of the speed regulating slide block, which is close to the first swing rod, forms an included angle with the first swing rod,

And the speed regulating screw rod is matched with the speed regulating slide block to form a screw rod and is used for controlling the speed regulating slide block to move along the length direction of the speed regulating screw rod.

2. The belt deflection adjustment device of claim 1, further comprising: a tensioning mechanism for tensioning the abrasive belt,

Wherein, the tensioning mechanism includes:

The tensioning bottom plate is in sliding connection with the deflection adjusting bottom plate;

And the upper tensioning driving piece is arranged on the tensioning bottom plate and used for driving the deflection adjusting bottom plate to move relative to the tensioning bottom plate so as to enable the tensioning roller to be far away from the main roller.

3. Abrasive belt deflection adjusting device according to claim 2, characterized in that:

Wherein the tensioning mechanism further comprises:

and the lower tensioning driving piece is arranged below the second swing rod and used for driving the deflection adjusting bottom plate to move relative to the tensioning bottom plate so as to enable the tensioning roller to be far away from the main roller.

4. Abrasive belt deflection adjusting device according to claim 1, characterized in that:

The number of the photoelectric switch pieces is four, and the four photoelectric switches are respectively:

The first photoelectric switch is used for sending an upper limit stop signal when detecting that the offset position of the abrasive belt is higher than or equal to an upper limit alarm position;

The second photoelectric switch is used for sending a downlink signal when detecting that the offset position of the abrasive belt is higher than the downlink return position;

The third photoelectric switch is used for sending an uplink signal when the detection position of the third photoelectric switch corresponds to the uplink return position of the offset position of the abrasive belt in the vertical direction and the offset position of the abrasive belt is lower than the uplink return position; and

And the fourth photoelectric switch is used for sending out a lower limit stop signal when detecting that the deviation position of the abrasive belt is lower than or equal to the lower limit alarm position.

5. Abrasive belt deflection regulating device according to claim 4, wherein,

Wherein when the control unit receives the upper limit stop signal or the lower limit stop signal, the control unit controls the rotation driving mechanism to stop operation,

When the control unit receives the uplink signal, the deviation adjusting mechanism is controlled to drive the abrasive belt to deviate downwards,

When the control unit receives the downlink signal, the deviation adjusting mechanism is controlled to drive the abrasive belt to deviate upwards.

6. Abrasive belt deflection adjusting device according to claim 1, characterized in that:

wherein, photoelectric switch spare is slot type photoelectric switch, slot type photoelectric switch includes:

a left side arm provided with a luminous body;

a right side arm provided with a light receiver for receiving light emitted by the light emitter; and

A suspension arm for connecting the left side arm and the right side arm to form a U-shaped groove for the abrasive belt to pass through,

The light emitting body and the light receiving body form the detection part, and the relative position of the light emitting body and the light receiving body is the detection position.

7. Abrasive belt deflection adjusting device according to claim 1, characterized in that:

Wherein, the offset adjusting mechanism further includes:

and the deflection adjusting shaft cover is arranged on the deflection adjusting shaft and used for preventing dust from entering the deflection adjusting shaft.

8. Abrasive belt deflection adjusting device according to claim 1, characterized in that:

wherein the control unit is a programmable logic controller.

9. A milling apparatus, comprising:

A main roller, a tensioning roller sleeve, abrasive belts arranged outside the main roller and the tensioning roller, and an abrasive belt deflection adjusting device for controlling the abrasive belts to ascend or descend along the axis direction of the main roller,

Wherein the belt deflection adjustment device is a belt deflection adjustment device according to any one of claims 1-8.