CN108145802B

CN108145802B - Wood lathe based on programmable controller

Info

Publication number: CN108145802B
Application number: CN201810173477.8A
Authority: CN
Inventors: 夏文明
Original assignee: Taizhou Vocational College of Science and Technology
Current assignee: Laifeng County Musen Wood Industry Co., Ltd.
Priority date: 2018-03-02
Filing date: 2018-03-02
Publication date: 2020-01-07
Anticipated expiration: 2038-03-02
Also published as: CN108145802A

Abstract

The invention discloses a wood lathe based on a programmable controller, which comprises a machine base, a spindle box fixedly arranged at the upper part of one end of the machine base, a tailstock movably arranged on the machine base and far away from one end of the spindle box, a turning tool seat movably arranged on the machine base and positioned between the spindle box and the tailstock, a tool rest movably arranged on the turning tool seat along the width direction of the machine base, a turning tool fixedly arranged on the tool rest, and a dust collection disc connected to the side surface of the tool rest and positioned below the turning tool; the dust collector also comprises a primary filter connected with the dust collection disc through a dust collection pipe and a secondary filter connected with the primary filter through a pipeline. The invention filters the sawdust with larger grain diameter by the dust removing cloth bag of the primary filter, and filters the sawdust with smaller grain diameter by the spray water of the secondary filter, thereby improving the air quality in the workshop where the wood lathe is located.

Description

Wood lathe based on programmable controller

Technical Field

The invention belongs to the field of wood processing equipment, and particularly relates to a wood lathe based on programmable controller control.

Background

Document number is CN206465222U discloses a wood working lathe with saw-dust recovery system, and its technical scheme main points are including lathe part and saw-dust recovery system, the lathe part includes the base, is located a plurality of supports of base top, installs stand on the base, installs the knife rest on the stand, be provided with a plurality of chip removal funnels on the base, saw-dust recovery system include with the person in charge of chip removal funnel intercommunication, with be responsible for the air exhauster one of being connected, with the separator box of air exhauster one being connected, set up at the collecting vessel of separator box bottom, set up at the air exhauster two of the separator box other end, the pond that links to each other with air exhauster two. The utility model provides a current timber can produce the problem of a large amount of saw-dusts and dust by saw, planing, glyptic in-process. The scheme of filtering saw-dust is provided to above-mentioned literature, however air that the second air exhauster will have the fine particle saw-dust leads to in the pond, the saw-dust in the pond of the side still needs the manual work to clear up, and the saw-dust of clearance bubble in aqueous is still comparatively troublesome, the untimely clearance then can cause to be located in the saw-dust drying of upper after being blown up by the air current again and fill in the air again, on the other hand lets in the air outlet of second air exhauster can cause great resistance in the aquatic, if the air exhauster velocity of flow is great, then the filter effect is also relatively limited (the bubble that has the saw-dust is from the in-process that upwards emits in aqueous, it still can not contact with water still to be located the granule saw-dust.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the woodworking lathe based on the programmable controller is provided.

In order to realize the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a wood lathe based on a programmable controller comprises a base, a spindle box fixedly mounted at the upper part of one end of the base, a tailstock movably mounted on the base and far away from one end of the spindle box, a turning tool seat movably mounted on the base and positioned between the spindle box and the tailstock, a tool rest movably mounted on the turning tool seat along the width direction of the base, a turning tool fixedly mounted on the tool rest, and a dust collection disc connected to the side surface of the tool rest and positioned below the turning tool;

the dust collector also comprises a primary filter connected with the dust collection disc through a dust collection pipe and a secondary filter connected with the primary filter through a pipeline;

the whole dust collection disc is of a rectangular groove body structure, a plurality of round rods along the length direction of the turning tool are mounted in the dust collection disc, and each round rod is positioned on a circular arc line with a concave middle part; the side wall of the dust collection disc at least at one pair of paired corners is connected with a dust collection pipe interface used for being connected with a dust collection pipe;

the primary filter comprises a rectangular box body a with an opening at the front side, a side cover plate connected to the front side of the box body a in a sealing mode, and a discharge pipe a connected to the lower end of the right side of the box body a;

the left side of the box body a is connected with a primary inlet joint connected with a dust collection pipe, and the upper part of the right side of the box body a is connected with a primary outlet joint used for connecting a secondary filter; the lower end of the box body a and the lower end of the discharge pipe a are connected with supporting legs a;

a horizontal clapboard is arranged above the position close to the primary inlet joint in the box body a, more than one mounting ring is formed on the horizontal clapboard, and each mounting ring is provided with a dust removal cloth bag;

a plurality of baffle strips with inverted V-shaped cross sections are equidistantly arranged at the lower position of the first-stage inlet joint in the box body a, and a gap for sawdust to fall is formed between every two adjacent baffle strips;

the bottom in the box body a is an inclined plane with high front and back and low middle, the middle of the inclined plane is a semi-circular groove-shaped material collecting channel a, the material collecting channel a is communicated with the discharge pipe a, and the material collecting channel a and the discharge pipe a are positioned on the same axis; a feeding screw rod a is rotatably mounted in the material collecting channel a and the material discharging pipe a, a primary discharging motor for driving the feeding screw rod a to rotate is fixedly mounted at the outer end of the material discharging pipe a, and a rotating supporting rod a which is rotatably inserted with the feeding screw rod a is fixedly mounted on the inner wall of the left side of the box body a;

the lower end of the discharge pipe a close to the outer end part is connected with a discharge channel a, and a discharge hole a is formed in the discharge pipe a corresponding to the discharge channel a; the outer end of the feeding screw rod a is connected with a cylindrical valve body part a, and the diameter of the valve body part a is matched with the inner diameter of the discharge pipe a; a double-helix external thread is formed on an output shaft a of the first-stage discharging motor, and the valve body part a is in threaded connection with the output shaft a of the first-stage discharging motor;

when the primary discharging motor rotates reversely, the feeding screw rod a is driven to rotate and simultaneously moves outwards to the limit position, and the valve body part a is positioned on the right side of the discharging port a, so that the discharging port a is in an open state; when the primary discharging motor rotates forwards, the feeding screw rod a is driven to rotate and simultaneously moves inwards to the limit position, and the valve body part a is just positioned at the position of the discharging hole a, so that the discharging hole a is in a closed state;

the secondary filter comprises a rectangular box body b with an opening at the top, a top cover connected to the top of the box body b in a sealing manner, and a discharge pipe b connected to the right side of the box body b;

the left side of the box body b is connected with a secondary inlet joint which is connected with a primary outlet joint of the primary filter through a pipeline, and the secondary inlet joint is positioned in the middle of the box body b in the height direction; the upper part of the right side of the box body b is connected with a fan joint; the fan joint is connected with a centrifugal fan; the lower end of the box body b and the lower end of the discharge pipe b are connected with supporting legs b;

a longitudinal partition plate is arranged between the front wall surface and the rear wall surface in the box body b, the upper end of the longitudinal partition plate is positioned in the middle of the height direction of the box body b, the right side of the upper end of the longitudinal partition plate is connected with an inclined plate which is lower at the left and higher at the right, a space is reserved between the lower end of the longitudinal partition plate and the bottom in the box body b, and the right side of the lower end of the longitudinal partition plate is connected with a semicircular plate;

a conveying belt for conveying the wood chips from the left side of the longitudinal partition plate to the right side of the longitudinal partition plate is arranged in the box body b; a driving roller for driving the conveying belt to rotate clockwise is arranged at the left side of the upper part of the longitudinal partition plate in the box body b, and a conveying belt motor for driving the driving roller to rotate is arranged at the rear side outside the box body b; a driven roller a is installed on the left side of the driving roller, a driven roller b is installed right below the driven roller a, a driven roller c is installed on the right side of the driven roller b close to the inner wall of the right side of the box body b, a driven roller d is installed right above the driven roller c, and the height of the driven roller d is lower than that of the driving roller; the left side and the right side of the lower part of the longitudinal partition plate in the box body b are respectively provided with a magnetic roller a and a magnetic roller b which are made of permanent magnet materials, and the inner wall of the conveying belt is equidistantly connected with magnetic stripes or iron bars which can be tightly attracted with the magnetic rollers a and the magnetic rollers b through magnetic force along the length direction; the outer wall of the conveying belt is equidistantly connected with a material pushing plate used for carrying the sawdust above the water surface on the left side of the longitudinal partition plate into the water on the right side of the longitudinal partition plate, and the side wall of the material pushing plate facing the clockwise direction is in a rectangular groove shape; the height positions of the magnetic roller a and the magnetic roller b are smaller than that of the driven roller d, so that the part of the conveying belt between the magnetic roller b and the driven roller d is in a state of being low at the left side and high at the right side;

the tank body b is internally injected with water the liquid level of which is equal to the upper part of the left side of the conveying belt, the right side of the longitudinal partition plate is provided with a material collecting channel b with a semicircular section, and the upper end of the material collecting channel b is higher than the liquid level in the tank body b; the discharge pipe b is communicated with the collecting channel b, and the discharge pipe b and the collecting channel b are positioned on the same axis;

a feeding screw rod b is rotatably mounted in the material collecting channel b and the material discharging pipe b, a secondary discharging motor used for driving the feeding screw rod b to rotate is fixedly mounted at the outer end of the material discharging pipe b, and a rotating supporting rod b rotatably inserted with the feeding screw rod b is fixedly mounted on the right side of the longitudinal partition plate;

the lower end of the discharge pipe b close to the outer end part is connected with a discharge channel b, and a discharge hole b is formed in the discharge pipe b corresponding to the discharge channel b; the outer end of the feeding screw rod b is connected with a cylindrical valve body part b, and the diameter of the valve body part b is matched with the inner diameter of the discharge pipe b; a double-helix external thread is formed on an output shaft a of the secondary discharging motor, and the valve body part b is in threaded connection with the output shaft of the secondary discharging motor;

when the secondary discharging motor rotates reversely, the feeding screw rod b is driven to rotate and simultaneously moves outwards to the limit position, and the valve body part b is positioned on the right side of the discharging hole b, so that the discharging hole b is in an open state; when the secondary discharging motor rotates forwards, the feeding screw rod b is driven to rotate and simultaneously moves inwards to the limit position, and the valve body part b is just positioned at the position of the discharging hole b, so that the discharging hole b is in a closed state;

a plurality of spray pipes are equidistantly arranged at the top in the box body b from the inner wall of the left side of the box body b to the middle part of the inclined plate; the lower ends of more than two spray pipes positioned on the rightmost side are provided with strip-shaped water spraying seams along the length direction for forming a water film when spraying water, and the lower ends of other spray pipes are uniformly provided with spray holes for spraying water mist when spraying water;

one end of each spray pipe extends out of the box body b, the outer end parts of the spray pipes are communicated in parallel through a water conveying pipe, a spray water pump for pumping water from the box body b is installed at the lower end of the box body b, and the water outlet end of the spray water pump is connected with the water conveying pipe;

a circular ceramic filter plate is arranged at the bottom in the box body b corresponding to the position of the water spray pump, and a circular brush holder used for scraping and washing the upper surface of the ceramic filter plate is rotatably arranged at the upper end of the ceramic filter plate; the brush holder comprises an inner connecting ring and an outer connecting ring which are concentric, and a plurality of scraping blades which are arranged at equal angles and are integrally connected between the inner connecting ring and the outer connecting ring, and the outer ends of the scraping blades extend out of the outer connecting ring; a brush holder driving head used for pushing the outer end of the scraping blade to move so as to drive the brush holder to rotate is formed at one end of each material pushing plate close to the rear wall of the box body b;

a liquid level sensor for monitoring the water level in the box body b is installed in the box body b, a water delivery pipe is connected with a water supplementing electromagnetic valve through a three-way joint, and the other end of the water supplementing electromagnetic valve is connected with a tap water pipe;

the liquid level sensor is electrically connected with a signal input end of the PLC, and the primary discharging motor, the secondary discharging motor, the centrifugal fan, the conveying belt motor, the spray water pump and the water replenishing electromagnetic valve are respectively and electrically connected with an output end of the PLC;

the signal input end of the PLC is also connected with a first discharging switch used for controlling the forward and reverse rotation of the primary discharging motor, and the first discharging switch is pressed once, so that the rotation direction of the primary discharging motor is changed once;

the signal input end of the PLC is also connected with a second discharging switch used for controlling the forward and reverse rotation of the secondary discharging motor, the second discharging switch is pressed once, and the steering of the secondary discharging motor is changed once;

when the liquid level in the box body b is lower than a set value, the PLC controls the water replenishing electromagnetic valve to be opened, and when the liquid level in the box body b is higher than the set value by more than 3%, the PLC controls the water replenishing electromagnetic valve to be closed.

As a preferable scheme: the pitch of the external threads on the output shafts of the first-stage discharging motor and the second-stage discharging motor is 1-1.5 times of the diameter of the output shaft; the external thread is a left-handed thread, and the thread blades on the feeding screw rod a and the feeding screw rod b are in a left-handed structure.

As a preferable scheme: and each spraying hole is connected with an atomizing nozzle.

As a preferable scheme: when the first-stage discharging motor and the second-stage discharging motor rotate forwards, the first-stage discharging motor and the second-stage discharging motor rotate for 3-10s and then stop rotating; when the first-stage discharging motor rotates reversely, the first-stage discharging motor rotates all the time until the first discharging switch is pressed down, and the first-stage discharging motor changes the steering direction; when the secondary discharging motor rotates reversely, the secondary discharging motor rotates all the time until the secondary discharging switch is pressed down, and the secondary discharging motor changes the steering direction.

As a preferable scheme: the side wall of the spindle box facing the tailstock is provided with a spindle, and the outer wall of the spindle box is also provided with a spindle motor for driving the spindle to rotate; a tool apron moving motor for driving a tool apron of a vehicle to move is arranged at one end, far away from the main shaft, of the machine base; a turning tool feeding motor for driving the tool rest to move is arranged on the tool apron; the spindle motor, the tool apron moving motor and the turning tool feeding motor are respectively electrically connected with the PLC; and the external power supply end of the PLC is also electrically connected with a lathe switch.

As a preferable scheme: the base is provided with a ball screw in transmission connection with the turning tool base, and the tool apron moving motor is connected with the ball screw; the turning tool seat is provided with a ball screw b in transmission connection with the tool rest, and the turning tool feeding motor is connected with the ball screw b;

as a preferable scheme: the top of the secondary filter is also provided with a demister, the bottom of the demister is connected with an air inlet pipe, the air inlet pipe is connected with the outlet end of the centrifugal fan, and the upper end of the air inlet pipe is higher than the inner bottom of the demister; the inner bottom of the demister is also connected with a drain pipe, the inner diameter of the drain pipe is less than 2mm, and the top cover is provided with a liquid return port for inserting the drain pipe; a plurality of defogging pieces are equidistantly installed on the upper portion in the defogger, and the distance between every two adjacent defogging pieces is smaller than 1.0 mm.

As a preferable scheme: the brush frame is also integrally formed with a middle connecting ring which is concentric with the outer connecting ring and is positioned between the inner connecting ring and the outer connecting ring, first scraping pieces are integrally formed between the outer connecting ring and the inner connecting ring, and second scraping pieces are integrally formed between the outer connecting ring and the middle connecting ring and between two adjacent first scraping pieces; the outer ends of the first scraping blade and the second scraping blade extend out of the outer connecting ring, driven push heads are formed at the parts, located on the periphery of the outer connecting ring, of the first scraping blade and the second scraping blade, and the brush frame driving head drives the brush frame to rotate by pushing the driven push heads.

As a preferable scheme: ceramic filter upper end intermediate junction has a dwang, the in-connection circle rotates with the dwang to be connected, the brush yoke relies on self gravity to support at ceramic filter upper end.

Compared with the prior art, the invention has the beneficial effects that: the invention filters the sawdust with larger grain diameter by the dust removing cloth bag of the primary filter, and filters the sawdust with smaller grain diameter by the spray water of the secondary filter, thereby improving the air quality in the workshop where the wood lathe is located.

Specifically, through setting up a plurality of round bars in the dust absorption dish, the air current velocity of flow between two adjacent round bars compares and does not set up the round bar and shows the increase like this, does benefit to the dust absorption dish and inhales the saw-dust as much as possible.

The dust removal cloth bag of the primary filter is used for blocking the sawdust with larger particle size (for example, the mesh number of the dust removal cloth bag is 100-200), so that the resistance of the dust removal cloth bag to the airflow formed by the centrifugal fan is smaller, and energy is relatively saved. The sawdust with larger particle size is intercepted by the dust removal cloth bag or falls into the material collecting channel a at the bottom in the box body a under the action of self gravity, and the sawdust is driven to be discharged from the material discharging channel a through the rotation of the feeding screw rod a (the material discharging channel a can be bound with the cloth bag for containing the sawdust). The barrier strip positioned between the collecting channel a and the transverse partition plate in the box body a is used for preventing the sawdust in the collecting channel a from being lifted up again under the action of air flow, and the service life of the dust removal cloth bag is prolonged.

When the saw-dust in the one-level filter that needs discharge, press first row material switch, one-level row material motor drives during the reversal pay-off screw rod a and rotates, outwards removes to extreme position simultaneously, and the screw in the valve body portion a offsets with the tip of one-level row material motor's output shaft an promptly, this moment valve body portion a is located discharge gate a's right side to make discharge gate a be in the open mode, as long as pay-off screw rod a lasts the rotation like this, can discharge the saw-dust in the collection material way a from discharge gate a. After the sawdust is discharged, as long as the first discharging switch is pressed, the first-stage discharging motor rotates forwards to drive the feeding screw rod a to rotate, and the feeding screw rod a moves inwards to the limit position under the driving of the screw thread of the output shaft a, namely, the left side of the feeding screw rod a abuts against the inner wall of the box body a, and at the moment, the valve body portion a is just located at the position of the discharge port a, so that the discharge port a is in a closed state. The feeding screw rod a is additionally provided with the valve body part a and is connected with the output shaft a of the first discharging motor through a large-pitch thread, so that the feeding function is realized, and the function of the valve is realized.

The shower that the top was equipped with the spraying hole in the secondary filter is drenched through the saw-dust powder that sprays the water smoke and will get into in the box b, the mixture of saw-dust powder and water smoke falls into the aquatic in the box b vertical partition board left side, because most ligneous proportion is less than water, so most saw-dust floats on the surface of water, the right side of vertical partition board in transferring the saw-dust to the box b through the scraping wings on the conveyer belt after that, because the conveyer belt is located the part between magnetic roller b and the driven voller d and is in the low high state in the right side in a left side, the slope of the rectangle cell body part that is located the scraping wings is up, the saw-dust in the rectangle cell body breaks away from and upwards floats from in the rectangle cell body, the saw-dust of the.

When the saw-dust in the secondary filter that needs discharge, press the second and arrange material switch, the second is arranged material and is driven feeding screw b to rotate during the motor reversal, outwards moves to extreme position simultaneously, and the screw in the valve body portion b offsets with the tip of the output shaft of second grade row material motor promptly, and this moment valve body portion b is located discharge gate b's right side to make discharge gate b be in the open mode, as long as feeding screw b continues to rotate like this, can discharge the saw-dust in the gathering material way b from discharge gate b. After the sawdust is discharged, the second discharging switch is pressed, the second-stage discharging motor drives the feeding screw rod b to rotate when rotating positively, the feeding screw rod b moves inwards to the limit position under the driving of the output shaft threads, namely, the left side of the feeding screw rod b abuts against the longitudinal partition plate, and at the moment, the valve body part b is just positioned at the discharge hole b, so that the discharge hole b is in a closed state. The feeding screw rod b is additionally provided with the valve body part b and is connected with an output shaft of the second discharging motor through a large-pitch thread, so that the feeding function is realized, and the function of the valve is realized.

Because the outer wall of the conveying belt is connected with a material pushing plate with a non-negligible volume, the path of the conveying belt cannot be limited by a driven roller at the part of the conveying belt below the longitudinal partition plate, so that the conveying belt is limited by a magnetic roller, and because the conveying belt rotates clockwise under the driving of the driving roller, the tension of the part of the conveying belt between the driving roller and the magnetic roller b is small, and the conveying belt can be kept in a stable state without too much attractive force by the magnetic roller.

In addition, in order to reduce the discharge of water mist from the fan joint, a strip-shaped water spraying seam is formed in the spraying pipe on the rightmost side, and a water curtain sprayed through the strip-shaped water spraying seam blocks the mixture of the water mist and the wood chips in the box body b.

In addition, in order to prevent the sawdust from being sucked by the spray water pump to block the spray holes and the strip-shaped spray slits, a ceramic filter plate is arranged at the water inlet of the spray water pump in the box body b for filtering. Furthermore, in order to keep the ceramic filter plate in a good filtering state, the brush holder is arranged on the ceramic filter plate to scrape and wash the upper surface of the ceramic filter plate, so that impurities do not block the ceramic filter plate, the brush holder is driven by the brush holder driving head on the conveying belt, extra driving motors are not needed for driving, and parts are simplified.

The semicircular plate at the lower end of the longitudinal partition plate is used for guiding water flow to flow from the left side of the longitudinal partition plate to the right side of the longitudinal partition plate. Specifically, because shower spun water all finally falls into the left side of vertical partition plate, make the left water level of vertical partition plate higher in the box b, and the water yield that is equipped with bar water spray seam spun that is located vertical partition plate top will obviously be greater than the spray hole, bar water spray seam spun water falls on the swash plate to flow downwards along vertical partition plate, because fluidic attaches the wall effect, more rivers flow downwards and flow to vertical partition plate right-hand through semi-circular board along vertical partition plate always, the scraping wings also help the flow direction of above-mentioned rivers, make the water level of vertical partition plate both sides keep in more balanced state in box b.

The demister plays a role in secondary water mist filtering and discharges the water collected on the demister back to the box body b through the drain pipe.

Drawings

Fig. 1 and 2 are schematic structural diagrams of the present invention.

Fig. 3 is a schematic view of the structure of the dust suction plate.

Fig. 4 is a schematic diagram of the overall structure of the primary filter.

FIG. 5 is an exploded view of the primary filter.

FIG. 6 is a schematic view of the internal structure of the primary filter.

Fig. 7 and 8 are schematic structural diagrams of the two-stage filter.

Fig. 9 is a schematic view of the internal structure of the two-stage filter.

Fig. 10 is a schematic structural view of a brush holder.

FIG. 11 is a schematic view of the internal structure of the mist eliminator.

Fig. 12 is a connection block diagram of an electric component of the present invention.

11. A machine base; 12. a main spindle box; 121. a main shaft; 122. a spindle motor; 13. a tailstock; 15. turning a tool apron; 150. a tool apron moving motor; 151. a slide base; 152. a tool holder; 153. a lathe tool feeding motor; 2. a dust collection tray; 21. a round bar; 22. a dust collection pipe interface;

3. a first stage filter; 31. a box body a; 311. supporting feet a; 312. a primary inlet fitting; 313. a primary outlet connection; 314. a discharge pipe a; 3141. a discharging channel a; 3142. a collecting channel a; 315. a diaphragm plate; 3151. installing a ring; 316. rotating the support rod a; 317. a bevel;

32. a side cover plate; 33. a first-stage discharging motor; 331. an output shaft a; 35. a feeding screw rod a; 351. a valve body portion a; 36. a dust removal cloth bag; 37. blocking strips;

5. a secondary filter;

51. a box body b; 511. supporting legs b; 512. a secondary inlet connection; 513. a fan joint;

514. a discharge pipe b; 5141. a discharging channel b; 5142. rotating the support rod b; 5143. a collecting channel b;

515. a longitudinal partition plate; 5151. a sloping plate; 5152. a semicircular plate;

52. a top cover; 520. a liquid return port;

53. a shower pipe; 5301. a spray orifice; 5302. strip-shaped water spraying seams; 530. a spray water pump; 531. a water delivery pipe; 532. a water replenishing electromagnetic valve; 533. a ceramic filter plate; 54. a secondary discharging motor;

55. a feeding screw b; 551. a valve body portion b;

56. a conveyor belt motor; 561. a drive roller; 562. a driven roller a; 563. a driven roller b; 564. a driven roller c; 565. a driven roller d; 566. a magnetic roller a; 567. a magnetic roller b;

57. a conveyor belt; 571. a material pushing plate; 572. a brush holder drive head;

58. a brush holder; 581. an outer connecting ring; 582. an inner connecting ring; 583. a middle connecting ring; 585. a first blade; 586. a second wiper blade;

6. a centrifugal fan;

7. a demister; 71. an air inlet pipe; 72. a drain pipe; 73. a defogging sheet.

Detailed Description

Example 1

Referring to fig. 1 to 12, the present embodiment is a wood turning lathe based on a programmable controller, which includes a base 11, a spindle box 12 fixedly installed on an upper portion of one end of the base, a tailstock 13 movably installed on the base and far away from one end of the spindle box, a turning tool base 15 movably installed on the base and between the spindle box and the tailstock, a tool rest 152 movably installed on the turning tool base along a width direction of the base, a turning tool fixedly installed on the tool rest, and a dust collection disk 2 connected to a side surface of the tool rest and located below the turning tool.

The dust collector also comprises a primary filter 3 connected with the dust collecting disc through a dust collecting pipe and a secondary filter 5 connected with the primary filter through a pipeline.

The whole dust collection disc is of a rectangular groove body structure, a plurality of round rods 21 along the length direction of the turning tool are mounted in the dust collection disc, and each round rod is positioned on a circular arc line with a concave middle part; the side walls of the dust collection tray at least at one pair of diagonal corners are connected with a dust collection pipe interface 22 for connecting with a dust collection pipe.

The primary filter includes a rectangular case a31 having an open front side, a side cover plate 32 sealingly attached to the front side of the case a, and a discharge pipe a314 attached to the lower end of the right side of the case a.

The left side of the box body a is connected with a primary inlet joint 312 connected with a dust collection pipe, and the upper part of the right side of the box body a is connected with a primary outlet joint 313 used for connecting a secondary filter; the lower end of the box body a and the lower end of the discharge pipe a are connected with supporting legs a 311.

A horizontal diaphragm 315 is arranged above the position close to the primary inlet joint in the box body a, more than one mounting ring 3151 is formed on the diaphragm, and each mounting ring is provided with a dust removal cloth bag 36.

And a plurality of barrier strips 37 with cross sections in the shape of a Chinese character 'ren' are equidistantly arranged at the lower position of the first-level inlet joint in the box body a, and a gap for wood chips to fall is formed between every two adjacent barrier strips.

The bottom in the box body a is an inclined plane 317 with high front and back and low middle, the middle of the inclined plane is a semi-circular groove-shaped material collecting channel a3142, the material collecting channel a is communicated with the discharge pipe a, and the material collecting channel a and the discharge pipe a are positioned on the same axis; a feeding screw a35 is rotatably mounted in the material collecting channel a and the material discharging pipe a, a first-stage discharging motor 33 for driving the feeding screw a to rotate is fixedly mounted at the outer end of the material discharging pipe a, and a rotating supporting rod a316 rotatably inserted with the feeding screw a is fixedly mounted on the inner wall of the left side of the box body a.

The lower end of the discharge pipe a close to the outer end is connected with a discharge channel a3141, and a discharge port a is formed in the discharge pipe a corresponding to the discharge channel a; the outer end of the feeding screw rod a is connected with a cylindrical valve body part a351, and the diameter of the valve body part a is matched with the inner diameter of the discharge pipe a; double-helix external threads are formed on an output shaft a331 of the first-stage discharging motor, and the valve body portion a is in threaded connection with the output shaft of the first-stage discharging motor.

When the primary discharging motor rotates reversely, the feeding screw rod a is driven to rotate and simultaneously moves outwards to the limit position, and the valve body part a is positioned on the right side of the discharging port a, so that the discharging port a is in an open state; when the primary discharging motor rotates forwards, the feeding screw rod a is driven to rotate and simultaneously moves inwards to the limit position, and the valve body portion a is just positioned at the position of the discharging port a, so that the discharging port a is in a closed state.

The secondary filter comprises a rectangular box body b51 with an open top, a top cover 52 connected to the top of the box body b in a sealing manner, and a discharge pipe b514 connected to the right side of the box body b.

The left side of the box body b is connected with a secondary inlet joint 512 which is connected with a primary outlet joint of the primary filter through a pipeline, and the secondary inlet joint is positioned in the middle of the box body b in the height direction; the upper part of the right side of the box body b is connected with a fan joint 513; the fan joint is connected with a centrifugal fan 6; the lower end of the box body b and the lower end of the discharge pipe b are connected with supporting legs b 511.

Install a vertical baffle 515 between the wall around in the box b, the upper end of vertical baffle is located box b direction of height's intermediate position, and the upper end right side of vertical baffle is connected with the swash plate 5151 that the slope that hangs down the height on the left side set up, leave the interval between the lower extreme of vertical baffle and the bottom in the box b, the lower extreme right side of vertical baffle is connected with a semicircle board 5152.

A conveying belt 57 for conveying the wood chips from the left side of the longitudinal partition plate to the right side of the longitudinal partition plate is arranged in the box body b; a driving roller 561 for driving the conveying belt to rotate clockwise is arranged at the left side of the upper portion of the longitudinal partition plate in the box body b, the driving roller and the conveying belt are in transmission connection through friction force or transmission gear, and a conveying belt motor 56 for driving the driving roller to rotate is arranged at the rear side of the outer portion of the box body b; a driven roller a562 is installed on the left side of the driving roller, a driven roller b563 is installed right below the driven roller a, a driven roller c564 is installed at the position, close to the inner wall of the right side of the box body b, on the right side of the driven roller b, a driven roller d565 is installed right above the driven roller c, and the height of the driven roller d is lower than that of the driving roller. The left side and the right side of the lower part of the longitudinal partition plate in the box body b are respectively provided with a magnetic roller a566 and a magnetic roller b567 which are made of permanent magnet materials, and the inner wall of the conveying belt is equidistantly connected with magnetic stripes or iron bars which can be tightly attracted with the magnetic rollers a and b through magnetic force along the length direction; the outer wall of the conveying belt is equidistantly connected with a material pushing plate used for carrying the sawdust above the water surface on the left side of the longitudinal partition plate into the water on the right side of the longitudinal partition plate, and the side wall of the material pushing plate facing the clockwise direction is in a rectangular groove shape; the height positions of the magnetic roller a and the magnetic roller b are smaller than that of the driven roller d, so that the part of the conveying belt between the magnetic roller b and the driven roller d is in a state of being low at the left side and high at the right side.

The tank b is filled with water with the liquid level equal to the upper part of the left side of the conveying belt, the right side of the longitudinal partition plate is provided with a material collecting channel b5143 with a semicircular section, and the upper end of the material collecting channel b is higher than the liquid level in the tank b; the discharge pipe b is communicated with the collecting channel b, and the discharge pipe b and the collecting channel b are located on the same axis.

A feeding screw rod b55 is rotatably mounted in the material collecting channel b and the material discharging pipe b, a secondary discharging motor 54 for driving the feeding screw rod b to rotate is fixedly mounted at the outer end of the material discharging pipe b, and a rotating supporting rod b5142 which is rotatably inserted with the feeding screw rod b is fixedly mounted on the right side of the longitudinal partition plate.

The lower end of the discharge pipe b close to the outer end part is connected with a discharge channel b5141, and a discharge hole b is formed in the discharge pipe b corresponding to the discharge channel b; the outer end of the feeding screw rod b is connected with a cylindrical valve body part b551, and the diameter of the valve body part b is matched with the inner diameter of the discharge pipe b; and a double-helix external thread is formed on an output shaft of the secondary discharging motor, and the valve body part b is in threaded connection with the output shaft of the secondary discharging motor.

a plurality of spray pipes 53 are equidistantly arranged at the top in the box body b from the inner wall of the left side of the box body b to the middle part of the inclined plate; the lower ends of more than two spray pipes located on the rightmost side are provided with strip-shaped water spraying slits 5302 used for forming a water film during water spraying along the length direction, and the lower ends of other spray pipes are uniformly provided with spray holes 5301 used for spraying water mist during water spraying. Or each spraying hole is connected with an atomizing nozzle.

One end of each spray pipe extends out of the box body b, the outer end parts of the spray pipes are communicated in parallel through a water conveying pipe 531, a spray water pump 530 for pumping water from the box body b is installed at the lower end of the box body b, and the water outlet end of the spray water pump is connected with the water conveying pipe.

A circular ceramic filter plate 533 is arranged at the bottom in the box body b corresponding to the position of the water spray pump, and a circular brush holder 58 for scraping and washing the upper surface of the ceramic filter plate is rotatably arranged at the upper end of the ceramic filter plate; the brush holder comprises an inner connecting ring 582 and an outer connecting ring 581 which are concentric, and a plurality of scraping blades which are arranged at equal angles and are integrally connected between the inner connecting ring and the outer connecting ring, wherein the outer ends of the scraping blades extend out of the outer connecting ring; and a brush holder driving head 572 for driving the outer end of the scraping blade to move so as to drive the brush holder to rotate is formed at one end of each material pushing plate close to the rear wall of the box body b.

A liquid level sensor for monitoring the water level in the box body b is installed in the box body b, a water replenishing electromagnetic valve 532 is connected to the water delivery pipe through a three-way joint, and the other end of the water replenishing electromagnetic valve is connected with a tap water pipe.

The liquid level sensor is electrically connected with the signal input end of the PLC, and the first-stage discharging motor, the second-stage discharging motor, the centrifugal fan, the conveying belt motor, the spray water pump and the water replenishing electromagnetic valve are respectively electrically connected with the output end of the PLC.

The signal input end of the PLC is further connected with a first discharging switch used for controlling the forward and reverse rotation of the first-stage discharging motor, the first discharging switch is pressed once, and the steering of the first-stage discharging motor is changed once.

The signal input end of the PLC is further connected with a second discharging switch used for controlling the forward and reverse rotation of the secondary discharging motor, the second discharging switch is pressed once, and the steering of the secondary discharging motor is changed once.

The PLC controller can be selected according to requirements, such as Siemens PLC SIMATIC S7-1200.

The pitch of the external threads on the output shafts of the first-stage discharging motor and the second-stage discharging motor is 1-1.5 times of the diameter of the output shaft; the external thread is a left-handed thread, and the thread blades on the feeding screw rod a and the feeding screw rod b are in a left-handed structure.

A main shaft 121 is arranged on the side wall of the main shaft box facing the tailstock, and a main shaft motor 122 for driving the main shaft to rotate is further arranged on the outer wall of the main shaft box; a tool apron moving motor 150 for driving a tool apron of the vehicle to move is arranged at one end, far away from the main shaft, of the machine base; the turning tool seat is provided with a turning tool feeding motor 153 for driving the tool rest to move; the spindle motor, the tool apron moving motor and the turning tool feeding motor are respectively electrically connected with the PLC; and the external power supply end of the PLC is also electrically connected with a lathe switch.

The base is provided with a ball screw in transmission connection with the turning tool base, and the tool apron moving motor is connected with the ball screw; the turning tool seat is provided with a ball screw b in transmission connection with the tool rest, and the turning tool feeding motor is connected with the ball screw b;

when the first-stage discharging motor and the second-stage discharging motor rotate forwards, the first-stage discharging motor and the second-stage discharging motor rotate for 3-10s and then stop rotating; when the first-stage discharging motor rotates reversely, the first-stage discharging motor rotates all the time until the first discharging switch is pressed down, and the first-stage discharging motor changes the steering direction; when the secondary discharging motor rotates reversely, the secondary discharging motor rotates all the time until the secondary discharging switch is pressed down, and the secondary discharging motor changes the steering direction.

The top of the secondary filter is also provided with a demister 7, the bottom of the demister is connected with an air inlet pipe 71, the air inlet pipe is connected with the outlet end of the centrifugal fan, and the upper end of the air inlet pipe is higher than the inner bottom of the demister; the inner bottom of the demister is also connected with a drain pipe 72, the inner diameter of the drain pipe is less than 2mm, and the top cover is provided with a liquid return port for inserting the drain pipe; a plurality of defogging pieces 73 are equidistantly installed on the upper portion in the defogger, and the distance between every two adjacent defogging pieces is smaller than 1.0 mm.

A middle connecting ring 583 concentric with the outer connecting ring is further integrally formed between the inner connecting ring and the outer connecting ring of the brush frame, a first scraping blade 585 is integrally formed between the outer connecting ring and the inner connecting ring, and a second scraping blade 586 is further integrally formed between two adjacent first scraping blades between the outer connecting ring and the middle connecting ring; the outer ends of the first scraping blade and the second scraping blade extend out of the outer connecting ring, driven push heads are formed at the parts, located on the periphery of the outer connecting ring, of the first scraping blade and the second scraping blade, and the brush frame driving head drives the brush frame to rotate by pushing the driven push heads.

Ceramic filter upper end intermediate junction has a dwang, the in-connection circle rotates with the dwang to be connected, the brush yoke relies on self gravity to support at ceramic filter upper end.

The invention filters the sawdust with larger grain diameter by the dust removing cloth bag of the primary filter, and filters the sawdust with smaller grain diameter by the spray water of the secondary filter, thereby improving the air quality in the workshop where the wood lathe is located.

When the saw-dust in the one-level filter that needs discharge, press first row material switch, one-level row material motor drives feeding screw a when reversing and rotates, outwards removes to extreme position simultaneously, and the screw in the valve body portion a offsets with the tip of one-level row material motor's output shaft promptly, this moment valve body portion a is located discharge gate a's right side to make discharge gate a be in the open mode, as long as feeding screw a lasts the rotation like this, can discharge the saw-dust in the collection material way a from discharge gate a. After the sawdust is discharged, as long as the first discharging switch is pressed, the first-stage discharging motor rotates forwards to drive the feeding screw rod a to rotate, and the feeding screw rod a moves inwards to the limit position under the driving of the output shaft threads, namely, the left side of the feeding screw rod a abuts against the inner wall of the box body a, and at the moment, the valve body portion a is just located at the position of the discharging port a, so that the discharging port a is in a closed state. The feeding screw rod a is additionally provided with the valve body part a and is connected with the output shaft of the first discharging motor through a large-pitch thread, so that the feeding function is realized, and the function of the valve is realized.

When the saw-dust in the secondary filter that needs discharge, press the second and arrange material switch, the second grade is arranged material and is driven feeding screw b to rotate during the motor reversal, outwards is removed to extreme position simultaneously, and the screw in the valve body portion b offsets with the tip of one-level discharge motor's output shaft promptly, this moment valve body portion b is located discharge gate b's right side to make discharge gate b be in the open mode, as long as feeding screw b continues to rotate like this, can discharge the saw-dust in the gathering material way b from discharge way b. After the sawdust is discharged, the second discharging switch is pressed, the second-stage discharging motor drives the feeding screw rod b to rotate when rotating positively, the feeding screw rod b moves inwards to the limit position under the driving of the output shaft threads, namely, the left side of the feeding screw rod b abuts against the longitudinal partition plate, and at the moment, the valve body part b is just positioned at the discharge hole b, so that the discharge hole b is in a closed state. The feeding screw rod b is additionally provided with the valve body part b and is connected with an output shaft of the second discharging motor through a large-pitch thread, so that the feeding function is realized, and the function of the valve is realized.

Example 2

This example differs from example 1 in that: the longitudinal partition plate is a screen plate with through holes, and the outer end of the material pushing plate is provided with bristles for brushing the screen plate. Therefore, the water levels on the two sides of the longitudinal partition plate can be kept basically consistent, and the screen plate can be kept in a conducting state through brushing of the bristles.

Example 3

This example differs from example 1 in that: and a stop lever used for stopping the outer end of the material pushing plate is further installed at the position, between the driven roller d and the magnetic roller b, on the right side of the longitudinal partition plate in the box body b, and an included angle of 10-30 degrees is formed between the stop lever and the plane where the material pushing plate is located. In the rotating process of the conveying belt, the outer end of the material pushing plate passing through the position of the stop rod is blocked by the stop rod to incline, so that the rectangular groove body is turned upwards, and wood chips in the rectangular groove body are easier to separate from the rectangular groove body and float upwards to the water surface to collect. The blocking rod is obliquely arranged relative to the material pushing plate, so that the resistance is reduced, and the deformation of the material pushing plate is facilitated.

Claims

1. The utility model provides a wood turning lathe based on programmable controller, including the frame, the headstock on frame one end upper portion of fixed mounting, movably install the tailstock of keeping away from headstock one end on the frame, movably install the lathe tool seat that lies in between headstock and tailstock on the frame, along the movably knife rest of installing on the lathe tool seat of frame width direction, fixed mounting is the lathe tool on the knife rest, its characterized in that:

the dust collection disc is connected to the side surface of the tool rest and is positioned below the turning tool;

the lower end of the discharge pipe b close to the outer end part is connected with a discharge channel b, and a discharge hole b is formed in the discharge pipe b corresponding to the discharge channel b; the outer end of the feeding screw rod b is connected with a cylindrical valve body part b, and the diameter of the valve body part b is matched with the inner diameter of the discharge pipe b; a double-helix external thread is formed on an output shaft of the secondary discharging motor, and the valve body part b is in threaded connection with the output shaft of the secondary discharging motor;

2. A programmable controller based woodworking lathe as claimed in claim 1, wherein: the pitch of the external threads on the output shafts of the first-stage discharging motor and the second-stage discharging motor is 1-1.5 times of the diameter of the output shaft; the external thread is a left-handed thread, and the thread blades on the feeding screw rod a and the feeding screw rod b are in a left-handed structure.

3. A programmable controller based woodworking lathe as claimed in claim 1, wherein: and each spraying hole is connected with an atomizing nozzle.

4. A programmable controller based woodworking lathe as claimed in claim 1, wherein: when the first-stage discharging motor and the second-stage discharging motor rotate forwards, the first-stage discharging motor and the second-stage discharging motor rotate for 3-10s and then stop rotating; when the first-stage discharging motor rotates reversely, the first-stage discharging motor rotates all the time until the first discharging switch is pressed down, and the first-stage discharging motor changes the steering direction; when the secondary discharging motor rotates reversely, the secondary discharging motor rotates all the time until the secondary discharging switch is pressed down, and the secondary discharging motor changes the steering direction.

5. A programmable controller based woodworking lathe as claimed in claim 1, wherein: the side wall of the spindle box facing the tailstock is provided with a spindle, and the outer wall of the spindle box is also provided with a spindle motor for driving the spindle to rotate; a tool apron moving motor for driving a tool apron of a vehicle to move is arranged at one end, far away from the main shaft, of the machine base; a turning tool feeding motor for driving the tool rest to move is arranged on the tool apron; the spindle motor, the tool apron moving motor and the turning tool feeding motor are respectively electrically connected with the PLC; and the external power supply end of the PLC is also electrically connected with a lathe switch.

6. A programmable controller based woodworking lathe as claimed in claim 5, wherein: the base is provided with a ball screw in transmission connection with the turning tool base, and the tool apron moving motor is connected with the ball screw; and a ball screw b in transmission connection with the tool rest is installed on the tool apron, and the turning tool feeding motor is connected with the ball screw b.

7. A programmable controller based woodworking lathe as claimed in claim 1, wherein: the top of the secondary filter is also provided with a demister, the bottom of the demister is connected with an air inlet pipe, the air inlet pipe is connected with the outlet end of the centrifugal fan, and the upper end of the air inlet pipe is higher than the inner bottom of the demister; the inner bottom of the demister is also connected with a drain pipe, the inner diameter of the drain pipe is less than 2mm, and the top cover is provided with a liquid return port for inserting the drain pipe; a plurality of defogging pieces are equidistantly installed on the upper portion in the defogger, and the distance between every two adjacent defogging pieces is smaller than 1.0 mm.

8. A programmable controller based woodworking lathe as claimed in claim 1, wherein: the brush frame is also integrally formed with a middle connecting ring which is concentric with the outer connecting ring and is positioned between the inner connecting ring and the outer connecting ring, first scraping pieces are integrally formed between the outer connecting ring and the inner connecting ring, and second scraping pieces are integrally formed between the outer connecting ring and the middle connecting ring and between two adjacent first scraping pieces; the outer ends of the first scraping blade and the second scraping blade extend out of the outer connecting ring, driven push heads are formed at the parts, located on the periphery of the outer connecting ring, of the first scraping blade and the second scraping blade, and the brush frame driving head drives the brush frame to rotate by pushing the driven push heads.

9. A programmable controller based woodworking lathe as claimed in claim 7, wherein: ceramic filter upper end intermediate junction has a dwang, the in-connection circle rotates with the dwang to be connected, the brush yoke relies on self gravity to support at ceramic filter upper end.