CN109453954B - Full-automatic inner gluing production line and production process for bushing outer pipe - Google Patents

Full-automatic inner gluing production line and production process for bushing outer pipe Download PDF

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Publication number
CN109453954B
CN109453954B CN201811197525.3A CN201811197525A CN109453954B CN 109453954 B CN109453954 B CN 109453954B CN 201811197525 A CN201811197525 A CN 201811197525A CN 109453954 B CN109453954 B CN 109453954B
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China
Prior art keywords
glue
conveying
lifting
pipe fitting
roller
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CN201811197525.3A
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Chinese (zh)
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CN109453954A (en
Inventor
刘际波
陈飞
张小洲
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Ningbo Reao Automation Equipment Co ltd
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Ningbo Reao Automation Equipment Co ltd
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Publication of CN109453954A publication Critical patent/CN109453954A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
    • B05D7/225—Coating inside the pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/56—Three layers or more
    • B05D7/58—No clear coat specified
    • B05D7/586—No clear coat specified each layer being cured, at least partially, separately

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention discloses a full-automatic internal glue coating production line and a production process for a bushing outer pipe, and the full-automatic internal glue coating production line comprises a feeding device, a conveying device, three transfer devices and three glue rolling devices, wherein the conveying device comprises a first conveying line, a second conveying line, a third conveying line and a fourth conveying line which are sequentially arranged, each conveying line is provided with a heating device for heating and drying a pipe fitting in conveying, the input end of the first conveying line is connected with the output end of the feeding device, the output end of the fourth conveying line is connected with a material receiving box, the transfer devices are respectively arranged between the end parts of the two adjacent conveying lines, and the glue rolling devices are arranged below the transfer devices. The invention can automatically complete the roller coating and drying operation of the multilayer inner glue of the pipe fitting, has high working efficiency and has very high practical value.

Description

Full-automatic inner gluing production line and production process for bushing outer pipe
Technical Field
The invention relates to the technical field of automobile part manufacturing, in particular to a full-automatic internal gluing production line and a production process for an automobile bushing outer pipe.
Background
The automobile bushing outer pipe is usually a round pipe with the outer diameter of 30-100 mm and the length of 30-90 mm, multiple gluing operations are required to be carried out in the pipe in the machining process of the automobile bushing outer pipe, manual gluing is mostly adopted in the prior art, and the working efficiency is low. The publication date is 2013, 1 and 30, and Chinese patent publication No. CN 202700723U discloses a gluing device for an automobile ball head bush, which comprises a bottom plate, guide rails, a speed reduction motor and a cylinder, wherein the front end of the upper surface of the bottom plate is provided with the two guide rails in parallel, the upper ends of the two guide rails are provided with the speed reduction motor, the guide rails are vertically provided with two positioning brackets, the middle parts of the positioning brackets are penetrated with distance adjusting screw rods, the upper ends of the positioning brackets are provided with rotating shaft sleeves, products are connected and arranged between the positioning blocks, the middle part of the upper surface of the bottom plate is provided with the two portal frame guide rails, the upper ends of the portal frame guide rails are provided with portal frames, the upper ends of the portal frames are provided with a downlink cylinder, the downlink cylinder is connected with a, but this bush rubber coating device can only carry out the rubber coating to the outside of bush, and can't satisfy automated production's requirement. The publication date is 2012 and 12 and 21, and the publication number is CN 202539028U, which discloses a bushing inner wall gluing device, including a fixed bracket, a feeding part and a smearing part installed on the fixed bracket, where the feeding part includes a rotatable glue spreader and a scraper blade arranged on one side of the glue spreader, and the smearing part includes two rotatable rollers. When the lining sleeve is used, the glue spreading roller of the feeding part is brushed with glue firstly, the glue spreading roller is uniformly distributed with glue by the aid of the scraper plates in the rotating process, redundant glue is scraped away, then the glue is placed on the glue spreading roller by the aid of a rolling brush, the glue is transferred to the rolling brush, the lining sleeve is sleeved on the rolling brush and placed between the two rollers, the motor drives the rollers, the lining sleeve and the rolling brush to roll together, and the glue can be uniformly brushed on the inner wall of the lining sleeve. However, the bushings of the bushing glue spreading device need to be fed one by one manually, and an automatic internal glue spreading system is lacked, so that automatic production cannot be realized.
Disclosure of Invention
The invention aims to solve the problems that the manual gluing work efficiency of the bushing outer pipe in the prior art is low and the gluing device for the inner wall of the bushing outer pipe in the prior art cannot realize automatic production, and provides a full-automatic inner gluing production line and a production process for the bushing outer pipe, which can automatically and continuously carry out inner gluing operation on the bushing outer pipe and have high production efficiency.
The invention adopts a specific scheme that the full-automatic inner coating production line for the bushing outer pipe comprises a feeding device, a conveying device, a transferring device and a glue rolling device, wherein the feeding device comprises a pipe lifting device, a pipe linear transferring device and a pipe screening device; the conveying device comprises a first conveying line, a second conveying line, a third conveying line and a fourth conveying line which are arranged in sequence, each conveying line is provided with a heating device for heating and drying the conveyed pipe fittings, the input end of the first conveying line is connected with the output end of the feeding device, the output end of the fourth conveying line is connected with the material receiving box, the three transfer devices are respectively arranged between the end parts of the two adjacent conveying lines and comprise a vertical overhead base plate, a transfer cylinder arranged on the base plate and two clamping jaw assemblies used for grabbing the pipe fittings, the three glue rolling devices are respectively arranged below the transfer device between the two adjacent conveying lines, the full-automatic inner glue coating production line of the bushing outer pipe also comprises a main controller, the main controller is connected with the feeding device, the conveying device, the transferring device, the glue rolling device and the heating device.
The pipe lifting device in the feeding device lifts the pipe (namely the outer pipe of the lining) to a higher position, and then the pipe is orderly arranged by the pipe linear transfer device and the pipe screening device so as to be convenient for butt joint with the conveying device. The four conveying lines arranged in sequence are used for conveying the pipe fittings in the whole process; wherein first transfer chain is used for carrying the pipe fitting to the primer roller coating station from feedway to preheat the pipe fitting in transportation process, when the pipe fitting reachd the output of first transfer chain, the overhead device that moves that sets up in transfer chain tip top grabs the pipe fitting of the output of first transfer chain and transfers to the rubber rolling device through the clamping jaw subassembly and carry out the primer roller coating, moves the device simultaneously and transfers the pipe fitting that accomplishes the primer roller coating on the rubber rolling device to the second transfer chain. The second transfer chain is used for conveying the pipe fitting to the first layer of surface glue coating station from the primer coating station, and heat and dry the pipe fitting that finishes the primer coating in transportation process, when the pipe fitting reachs the output of second transfer chain, the overhead device that moves that sets up in transfer chain tip top grabs the pipe fitting of the output of second transfer chain and transfers to the rubber coating device and carry out the first layer of surface glue coating through the clamping jaw subassembly, move simultaneously and move the pipe fitting that finishes the first layer of surface glue coating on the rubber coating device and transfer to the third transfer chain. The third transfer chain is used for conveying the pipe fitting from the first layer of surface glue roller coating station to the second layer of surface glue roller coating station, and heat and dry the pipe fitting that accomplishes the first layer of surface glue roller coating in transportation process, when the pipe fitting reachs the output of third transfer chain, the overhead device that moves that sets up in transfer chain tip top grabs the pipe fitting of the output of third transfer chain and transfers to the rubber coating device and carry out the second layer of surface glue roller coating through the clamping jaw subassembly, move the device simultaneously and transfer to the fourth transfer chain with the pipe fitting that accomplishes the second layer of surface glue roller coating on the rubber coating device. The fourth conveying line is used for conveying the pipe fittings to the material receiving box from the second layer glue rolling coating station, and heating and drying the pipe fittings subjected to the second layer glue rolling coating in the conveying process, so that the pipe fittings in the whole process are conveyed. The three transfer devices are used for moving the pipe fittings between the glue rolling station and two adjacent conveying lines, namely moving the pipe fittings at the tail ends of the conveying lines on the upstream side to the glue rolling station, and simultaneously moving the pipe fittings which are subjected to glue coating on the glue rolling station to the conveying lines on the downstream side. In the two clamping jaw assemblies, one clamping jaw assembly is used for moving the pipe fitting from the upstream side conveying line to the glue rolling device, the other clamping jaw assembly is used for moving the pipe fitting which is subjected to glue coating on the glue rolling device to the downstream side conveying line, and the two clamping jaw assemblies work synchronously and return to the initial position after the pipe fitting is transferred. And the three glue rolling devices are used for gluing the bottom glue, the first layer of surface glue and the second layer of surface glue on the pipe fitting. Therefore, the invention can automatically finish the roller coating and drying operation of the multilayer inner glue of the pipe fitting, is suitable for the pipe fittings with various specifications of 30-100 mm of outer diameter and 30-90 mm of length, and has high production efficiency.
Preferably, the pipe fitting lifting device comprises a feeding rack and a chain plate conveying belt obliquely arranged on the feeding rack, a bin for accommodating the pipe fitting is arranged at the lower end of the chain plate conveying belt, and the high end of the chain plate conveying belt is connected with the pipe fitting linear transfer device; the pipe fitting linear transfer device comprises a first linear vibration sliding groove for pipe fitting translation and a second linear vibration sliding groove for pipe fitting output, and the first linear vibration sliding groove and the second linear vibration sliding groove are respectively driven by a first linear feeder and a second linear feeder; the pipe screening device comprises a reference baffle plate, the reference baffle plate is arranged above the upstream section of the second direct vibration sliding chute through a baffle plate frame, a return material slide way which is obliquely arranged is arranged below the upstream section of the second direct vibration sliding chute, and the lower end of the return material slide way is connected with the storage bin; the chain plate conveying belt is driven by a speed reducing motor, a belt surface of the chain plate conveying belt is formed by arranging strip plates, vertical plates for preventing the pipe fittings from sliding off are vertically arranged on the belt surface, and the vertical plates are arranged at equal intervals in the length direction of the chain plate conveying belt; the feeding frame is also provided with a feeding speed regulator, and the main controller is connected with the chain plate conveying belt, the first linear feeder and the second linear feeder through the feeding speed regulator.
The pipe fitting lifting device lifts the pipe fitting to a higher position through a chain plate conveying belt which is obliquely arranged, and a bin at the lower part of the chain plate conveying belt is used for storing the pipe fitting to be coated with glue; the pipe fitting linear transfer device comprises a first direct vibration sliding groove for pipe fitting translation and a second direct vibration sliding groove for pipe fitting output, and the first direct vibration sliding groove and the second direct vibration sliding groove are respectively driven by a first linear feeder and a second linear feeder; the first straight vibrating chute is driven by the first linear feeder to lift the pipe fittings out of the outlet end of the chain plate conveyer belt through the chain plate conveyer belt, and the second straight vibrating chute is driven by the second linear feeder to convey the pipe fittings which are arranged orderly to the next procedure, so that the automatic feeding of the pipe fittings is completed. The pipe fitting screening device comprises a reference baffle plate, the pipe fittings which do not accord with the arrangement requirement are blocked by the reference baffle plate, the pipe fittings fall off on the second straight vibration chute and return to the bin at the lower part of the chain plate conveying belt through the obliquely arranged material return slide way, and the pipe fittings which do not accord with the arrangement requirement are prevented from entering the next procedure. The vertical plates vertical to the belt surface are arranged on the belt surface of the chain plate conveying belt at intervals, and the vertical plates are higher than the belt surface of the chain plate conveying belt, so that the pipe fitting can be prevented from rolling off on the chain plate conveying belt which is obliquely arranged, and the pipe fitting can be smoothly lifted. The feeding speed regulator is used for controlling the working states of the chain plate conveyer belt, the first linear feeder and the second linear feeder, controlling the flow speed of the pipe fitting and the like.
Preferably, the baffle frame is in an inverted L shape and comprises a vertical rod and a transverse frame arranged at the top of the vertical rod, the lower end of the vertical rod is fixed on the feeding rack, a baffle clamping groove is formed in the transverse frame, the reference baffle is inserted in the baffle clamping groove, an omega-shaped notch with a downward opening is formed in the reference baffle, the size of the omega-shaped notch is matched with the outer diameter of the pipe fitting, and the opening width of the omega-shaped notch is smaller than the outer diameter of the pipe fitting; the first straight vibration chute and the second straight vibration chute are arc-shaped chutes, a discharge port is formed below the high end part of the chain plate conveying belt, the first straight vibration chute is positioned below the discharge port, the first straight vibration chute is fixed on the first linear feeder, the second straight vibration chute is fixed on the second linear feeder, the outlet end of the first straight vibration chute is opposite to the inlet end of the second straight vibration chute, and the outlet end of the second straight vibration chute is corresponding to the inlet end of the first conveying belt; the upstream section of the second direct vibration sliding groove is of a shallow groove structure, the height of the groove wall of the upstream section of the second direct vibration sliding groove is smaller than that of the groove wall of the downstream section of the second direct vibration sliding groove, and feed back gaps are formed on two sides of the upstream section of the second direct vibration sliding groove.
The omega-shaped notch is a circular notch with a part missing, and the missing part of the omega-shaped notch is smaller than a semicircle; the size of the omega-shaped notch is matched with the outer diameter of the pipe fitting, namely the diameter of the circular notch is slightly larger than the outer diameter of the pipe fitting, so that when the axial direction of the pipe fitting is consistent with the length direction of the straight vibration sliding groove, the pipe fitting can pass through the omega-shaped notch in the reference baffle plate along the straight vibration sliding groove; and when the axial of pipe fitting was perpendicular with the length direction who directly shakes the spout (promptly the pipe fitting is in the state of standing vertically), then the pipe fitting can receive blockking at benchmark baffle edge, can't pass through in the omega shape breach on the benchmark baffle to play the pipe fitting screening effect. In addition, according to different external diameters of the pipe fittings, different reference baffles can be replaced correspondingly, and the height of the reference baffle can be adjusted, so that the feeding device is suitable for various liner outer pipes with different specifications. The arc-shaped groove can be matched with pipe fittings with various specifications, a discharge hole is formed below the high end part of the chain plate conveying belt, and the first direct vibration chute is positioned below the discharge hole, so that the pipe fittings falling from the chain plate conveying belt directly enter the first direct vibration chute, and the connecting structure of the chain plate conveying belt and the pipe fitting linear transfer device is simplified; the second straight vibration chute receives the pipe fitting output from the first straight vibration chute and pushes the pipe fitting to the inlet end of the first conveying line; and the upper reaches section of the second straight spout that shakes is set to shallow slot structure and its cell wall height is lower relatively, can conveniently pass through the feed back breach with the pipe fitting that does not conform to the array requirement and keep off the second straight spout that shakes, makes it get back to the feed bin again through the feed back slide.
Preferably, the whole stock bin is rectangular, a guide inclined plane is arranged at the bottom of the stock bin, a flip cover is arranged on the stock bin, supporting springs are arranged between two sides of the flip cover and the side wall of the stock bin, and an observation window and a handle are arranged on the flip cover; the two sides of the chain plate conveying belt are provided with side plates, a protective cover plate is arranged above the chain plate conveying belt which is higher than the storage bin, a material blocking cover is arranged above the chain plate conveying belt which is lower than the storage bin, a movable cover plate is arranged at the high end of the chain plate conveying belt and is positioned above the first straight vibrating chute, the protective cover plate and the movable cover plate are both of transparent structures, and a handle is arranged on the movable cover plate; one side of the feeding rack is provided with a plugboard frame used for storing the reference baffle, and the bottom of the feeding rack is provided with an adjustable foot margin. The direction inclined plane is used for leading the pipe fitting in the feed bin to the drag link conveyer belt, and during operation flip can prevent that debris from getting into the feed bin, and the observation window is used for observing the pipe fitting volume in the feed bin to in time add. The protective cover plate and the material blocking cover are arranged on the chain plate conveying belt, so that sundries can be prevented from entering the chain plate conveying belt, and the protective cover plate and the movable cover plate which are of transparent structures are convenient for operators to know the working condition of the chain plate conveying belt from the outside. The datum baffle of multiple specification can be deposited to the picture peg frame, and adjustable lower margin can play the fine setting effect to the feed frame, ensures the firm of during operation feed frame.
Preferably, the front side surface of the base plate is provided with two horizontally arranged slide rails, each slide rail is provided with two linear bearings, the shifting cylinder is connected with the linear bearings on the slide rails through a connecting block, the front side surface of each linear bearing is fixedly provided with an installation plate, the clamping jaw assemblies are arranged on the installation plates in parallel from left to right, the base plate is provided with a through groove parallel to the slide rails, the shifting cylinder is horizontally arranged on the rear side surface of the base plate, and the output end of the shifting cylinder is fixed with the rear side surface of a linear bearing through a connecting block which transversely penetrates through the through groove; when the transfer cylinder works, the connecting block drives the linear bearing to move left and right, and the linear bearing drives the mounting plate and the clamping jaw assembly on the mounting plate to move left and right; the sliding rail is fixed on the base plate through sliding rail seats at two ends, the sliding rail seats are strip-shaped, mounting grooves are vertically formed in two sides of the base plate, the sliding rail seats are fixed in the mounting grooves, elastic buffer blocks are arranged on the linear bearings, and translation limit switches are arranged on the sliding rail seats on two sides; the clamping jaw assembly comprises a lifting cylinder for lifting a clamping jaw, the lower end of an output shaft of the lifting cylinder is fixed with a lifting plate, a clamping cylinder which is horizontally arranged is arranged below the lifting plate, and two ends of the clamping cylinder are connected with a pair of clamping jaw plates; the clamping jaw assembly comprises a fixed seat, a groove is vertically formed in the center of the fixed seat, the lifting cylinder is arranged in the groove, guide rods penetrate through the fixed seats on the two sides of the lifting cylinder, the lower end part of each guide rod is fixed with the lifting plate, and the lifting cylinder drives the lifting plate and the clamping jaw assembly to move up and down when acting; the back side of the base plate is provided with a transfer valve group, and the main controller controls a transfer cylinder, a lifting cylinder and a clamping cylinder through the transfer valve group (namely, a gas circuit control component). The mounting plate used for fixing the clamping jaw assembly is fixed on the linear bearing, and the connecting block at the output end of the transfer cylinder is connected with one of the linear bearings on the slide rail to push the mounting plate to move integrally. The buffer block is used for preventing the linear bearing from directly impacting the slide rail seats on the two sides, the translation limit switches can limit the limit positions of the linear bearing, and when the translation limit switches on the two sides are extruded to act, the main controller enables the transfer cylinder to stop working through the transfer valve group. The up-and-down movement of the clamping jaw assembly is completed through the lifting cylinder, and in addition, the clamping cylinder completes the opening and closing of the clamping jaw plate so as to grab or put down the pipe fitting.
Preferably, the upper end and the lower end of the fixed seat are both provided with a switch board, the switch board at the upper end of the fixed seat is provided with a descending limit switch, the switch board at the lower end of the fixed seat is provided with a ascending limit switch, the descending limit switch at the upper end of the fixed seat and the end board arranged at the upper end of the guide rod form a descending limit device, and the ascending limit switch at the lower end of the fixed seat and the lifting board at the lower end of the guide; a clamping plate parallel to the lifting plate is arranged below the lifting plate, the clamping cylinder is transversely fixed on the lower surface of the clamping plate, telescopic rods are arranged on two sides of the upper surface of the clamping plate, the lower ends of the telescopic rods are fixed with the clamping plate, the telescopic rods slidably penetrate through the lifting plate, the upper ends of the telescopic rods are positioned above the lifting plate, and compression springs are sleeved on the telescopic rods between the clamping plate and the lifting plate; the clamping cylinder is characterized in that cylinder shafts at two ends of the clamping cylinder are connected with the clamping jaw seats, clamping grooves are formed in the lower ends of the clamping jaw seats, the clamping jaw plates are inserted into the clamping grooves and fixed through positioning plungers, the lower ends of the clamping jaw plates incline to one side of the clamping cylinder, and when the clamping cylinder acts, the distance between the clamping jaw plates at two sides is increased or reduced; a pressing block is arranged below the clamping cylinder, a T-shaped groove is formed in the middle of the bottom surface of the clamping cylinder, and the upper end of the pressing block is inserted into the T-shaped groove; one side of the lifting plate close to the telescopic rod is provided with a position sensor, and the telescopic rod and the position sensor form a compression detection device.
The ascending limit switch and the descending limit switch are used for ascending and descending limit of the clamping jaw assembly, and when the ascending limit switch or the descending limit switch is extruded, the main controller controls the transfer valve group to enable the lifting cylinder to stop working. The telescopic rod and the compression spring play a role in buffering when the clamping jaw assembly moves downwards, and the clamping jaw plate or the pipe fitting is prevented from being directly impacted. The clamping jaw plates are connected with the clamping jaw seats through clamping grooves, so that the clamping jaw plates with different sizes can be conveniently replaced, and the clamping jaw plates are suitable for pipe fittings with different specifications. The pressing block is used for pressing the pipe fitting before the pipe fitting is grabbed, so that the pipe fitting is prevented from moving when the clamping jaw plate is grabbed, and the grabbing of the pipe fitting is prevented from being influenced; the upper end of the pressing block is inserted into the T-shaped groove, so that the pressing blocks with different heights can be conveniently replaced, and the pressing blocks are suitable for pipe fittings with different specifications; and compress tightly detection device and be used for detecting the state that compresses tightly of pipe fitting, when the telescopic link upper end is close to position sensor, show that the pipe fitting has compressed tightly, main control unit makes lift cylinder stop work through moving the group valve according to position sensor's signal, controls the centre gripping cylinder work simultaneously and begins to snatch the pipe fitting.
Preferably, a drag chain is arranged on the substrate and comprises a lifting drag chain and a translation drag chain, and the drag chain is connected to a drag chain fixing seat; and the front sides of the two clamping jaw assemblies are provided with guard plates which are fixed on the mounting plate through fixing columns. The tow chain is used for arranging a wire harness of a movable control circuit and an air pipe of an air cylinder, so that the tow chain moves along with the clamping jaw assembly.
Preferably, the conveying line comprises a long-strip-shaped conveying frame, a chain conveying belt is arranged on the conveying frame, a pipe fitting slide way is arranged above the chain conveying belt, pipe fitting pressing devices are arranged at the output ends of the first conveying line, the second conveying line and the third conveying line respectively, and each pipe fitting pressing device comprises a pressing cylinder and a pressing block; the tail end of the first conveying line, the second conveying line and the third conveying line is provided with a material blocking device, the material blocking device comprises a Z-shaped bottom plate and a material blocking cylinder arranged on the Z-shaped bottom plate, the upper portion of the Z-shaped bottom plate is hinged to a pressing plate, the pressing plate is connected with the material blocking cylinder through a material blocking spring, and the material blocking device is further provided with a proximity sensor. The pipe fitting pressing device is used for pressing the rear side pipe fitting of the moved pipe fitting, and the pipe fitting positioned at the tail end of the conveying line is prevented from being lifted up when moving. The material blocking device is used for limiting the position of the pipe fitting at the tail end of the conveying line, and meanwhile when the pipe fitting at the tail end of the conveying line is moved, the material blocking device releases the pressing plate through the air cylinder, so that the pressure on the pipe fitting at the tail end of the conveying line is reduced, and the pipe fitting can be smoothly moved to the glue rolling station from the conveying line.
Preferably, the input ends of the second conveying line, the third conveying line and the fourth conveying line are provided with gluing detection devices, each gluing detection device comprises a color recognition sensor, and each gluing detection device is fixed on the conveying frame through a support; the conveying frame of the conveying line is further provided with a conveying adjusting mechanism, an opposite-injection device and a height adjusting device, and the conveying frame is fixed through an L-shaped base. The gluing detection device is used for detecting whether the pipe fitting is glued in a gluing station in a missing way or not, and the gluing detection device can determine the gluing state through color recognition of the inside of the pipe fitting; the main controller adjusts the conveying speed of the pipe fittings on the conveying line through the conveying adjusting mechanism; the correlation device is used for detecting whether the vacant sections of the pipe fittings exist on the conveying line or not through the emission and the receiving of the light. Because the conveying line is of a long strip structure, the conveying frame can be fixed through the L-shaped base, and the height adjusting device is used for finely adjusting the horizontal state of the conveying frame.
Preferably, the glue rolling device comprises a glue spreader, a glue spreading roller gluing device, a glue spreader translation device, a glue spreader lifting device, a pipe driving device and a glue distribution conveying device, the glue spreader comprises a roll shaft and a roller brush movably sleeved on the roll shaft, the glue spreading roller gluing device comprises a glue spreading roller, the glue spreader is arranged on a glue spreading roller seat above the glue spreading roller, and the glue spreading roller seat is connected with the glue spreading roller translation device and the glue spreading roller lifting device; the pipe fitting driving device comprises two pipe fitting rollers for driving the pipe fitting to rotate, and the pipe fitting rollers are respectively arranged on the two roller bases; the pipe fitting rollers are driven by a gluing motor, the gluing motor is connected with the pipe fitting rollers through a transmission mechanism, and the rotating directions and the rotating speeds of the two pipe fitting rollers are the same; the pipe fitting driving device further comprises a roller lifting device, the roller lifting device comprises a lifting motor, the lifting motor is connected with a lifting seat through a lifting lead screw, the roller seat is arranged on the lifting seat, lifting guide pillars penetrating through the lifting seat are arranged on two sides of the lifting lead screw, and the lifting motor is a stepping motor. The pipe fitting driving device further comprises a roller spacing adjusting device, the roller spacing adjusting device comprises an adjusting guide rod horizontally fixed on the lifting seat, the two roller seats are slidably arranged on the adjusting guide rod, adjusting screw rods penetrate through the two roller seats, one end of each adjusting screw rod is connected with a spacing adjusting motor, and the spacing adjusting motor is a stepping motor; the distance adjusting motor is arranged below the adjusting screw rod and is connected with the adjusting screw rod through a synchronous belt, two screw rod nuts are arranged on the adjusting screw rod and are respectively fixed with the two roller bases, and when the adjusting screw rod rotates, the distance between the two roller bases is increased or shortened; the glue rolling device also comprises a glue rolling controller, and the glue rolling controller is connected with the glue spreading roller gluing device, the glue spreading roller translation device, the glue spreading roller lifting device and the pipe fitting driving device; when the glue rolling device works, the pipe fittings are arranged on the two pipe fitting rollers, the gluing rollers are in contact with glue, the gluing rollers rotate and are in contact with the gluing rollers to adhere the glue to the gluing rollers, the gluing rollers move into the pipe fittings and cling to the inner walls of the pipe fittings, the pipe fitting rollers drive the pipe fittings to rotate, and the pipe fittings rotate to drive the gluing rollers to rotate and coat the glue on the gluing rollers on the pipe fittings.
The glue rolling device comprises a glue spreader, a glue spreader gluing device, a glue spreader translation device, a glue spreader lifting device and a pipe driving device, wherein the glue spreader gluing device is used for adhering glue to the glue spreader, the glue spreader is used for coating the glue on the inner wall of a pipe (namely a lining outer pipe), the glue spreader translation device is matched with the glue spreader lifting device and used for axial movement of the glue spreader in the horizontal direction and lifting in the vertical direction, the glue spreader retreats from the pipe when retreating and adheres the glue on the glue spreader, and the glue spreader advances to be inserted into the pipe to glue the inner wall of the pipe. The pipe fitting driving device is used for driving the pipe fitting to rotate, so that the glue coating roller is in uniform contact with the inner wall of the pipe fitting, and glue can be uniformly coated. The gluing motor divides power into two paths through a transmission mechanism, respectively drives the two pipe fitting rollers, and enables the rotation directions and the rotation speeds of the two pipe fitting rollers to be the same; when the pipe fitting is arranged on the two pipe fitting rollers (namely tangent to the two pipe fitting rollers), the two pipe fitting rollers drive the pipe fitting to rotate, and meanwhile, a certain pressure is applied to the pipe fitting inside the pipe fitting through the glue spreader, so that the glue spreader can be in uniform contact with the inner wall of the pipe fitting, and glue is uniformly coated on the inner wall of the pipe fitting. The roller lifting device is used for adjusting the height of the pipe fitting roller so as to adapt to various pipe fittings with different specifications.
Preferably, the two gluing rollers are arranged in parallel up and down, the two gluing rollers are connected with a gluing motor through a gear set, the peripheral surfaces of the two gluing rollers are in contact and have opposite rotation directions, the lower part of the gluing roller positioned below is in contact with glue, and the gluing motor is a speed reduction motor; the glue spreading roller translation device comprises a fixed seat, two translation guide rods are horizontally arranged on the fixed seat, the glue spreading roller seat is slidably arranged on the translation guide rods, a translation cylinder is further arranged between the glue spreading roller seat and the fixed seat, the translation cylinder is a rodless cylinder, and when the translation cylinder works, the glue spreading roller seat slides back and forth on the translation guide rods; the glue spreader lifting device comprises a lifting cylinder vertically arranged on a glue spreading roller seat, the lifting cylinder is connected with a glue spreading roller mounting plate through a cylinder shaft, the glue spreading roller is fixed on the glue spreading roller mounting plate, lifting guide rods penetrating through the glue spreading roller seat are arranged on two sides of the cylinder shaft, the lower end of each lifting guide rod is fixed on the glue spreading roller mounting plate, and the glue spreading roller mounting plate moves up and down relative to the glue spreading roller seat when the lifting cylinder works.
The glue spreading device is characterized in that an upper gluing roller and a lower gluing roller are arranged, the lower part of the lower gluing roller is immersed in glue, the glue is brought to the outer peripheral surface of the gluing rollers through rotation, the upper gluing roller and the lower gluing roller are in mutual contact, the glue can be uniformly distributed on the outer peripheral surface of the upper gluing roller, and then the glue is attached to the glue spreading roller through the upper gluing roller, so that the glue on the glue spreading roller is uniformly distributed. The glue spreader can withdraw from the glue spreader pipe when retreating, and can contact with the gluing roller after retreating, so that the glue on the gluing roller is adhered to the glue spreader, and the glue spreader can be inserted into the pipe to glue the inner wall of the pipe when advancing. The glue spreader lifting device is used for lifting the glue spreader in the vertical direction so as to facilitate the glue spreader to be inserted into the pipe fitting or to be withdrawn from the pipe fitting without influencing the position of the pipe fitting, and meanwhile, the glue spreader is reduced to be closely attached to the inner wall of the pipe fitting through the lifting device after the glue spreader is inserted into the pipe fitting, so that the effects of fixing the pipe fitting and facilitating the glue spreading operation on the inner wall of the pipe fitting are achieved.
The production process of the full-automatic inner glue coating production line of the bushing outer pipe comprises the following process steps:
a. the feeding device lifts the pipe fittings, and the pipe fittings which are orderly arranged are conveyed to the input end of the first conveying line through linear conveying and screening of the pipe fittings;
b. the first conveying line conveys the pipe fittings from the input end to the output end, and the heating device preheats the pipe fittings in conveying;
c. the transfer device transfers the pipe fitting at the output end of the first conveying line to the glue rolling device, the glue rolling device performs primer roll coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting subjected to primer roll coating to the input end of the second conveying line;
d. the second conveying line conveys the pipe fittings from the input end to the output end, and the heating device heats and dries the conveyed pipe fittings;
e. the transfer device transfers the pipe fitting at the output end of the second conveying line to the glue rolling device, the glue rolling device performs first layer glue rolling coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting after the first layer glue rolling coating to the input end of the third conveying line;
f. the third conveying line conveys the pipe fittings from the input end to the output end, and the heating device heats and dries the conveyed pipe fittings;
g. the transfer device transfers the pipe fitting at the output end of the third conveying line to the glue rolling device, the glue rolling device performs second layer glue rolling coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting subjected to the second layer glue rolling coating to the input end of the fourth conveying line;
h. the fourth conveying line conveys the pipe fittings from the input end to the output end, the heating device heats and dries the pipe fittings in conveying, and the pipe fittings output from the fourth conveying line enter the material receiving box.
The invention has the beneficial effects that: the fully-automatic inner coating production line and the production process of the bushing outer tube can automatically and continuously carry out inner coating operation on the bushing outer tube, are suitable for various specifications of pipe fittings with the outer diameter of 30-100 mm and the length of 30-90 mm, and have high production efficiency and high practical value.
Drawings
FIG. 1 is a schematic block diagram of a fully automatic inner glue coating production line for a bushing outer tube according to the present invention;
FIG. 2 is a schematic view of an overall configuration of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic perspective view of the feeding device of the present invention;
FIG. 5 is a schematic view of an exploded structure of the feeding device of the present invention;
fig. 6 is a schematic perspective view of the transfer device of the present invention;
fig. 7 is a schematic perspective view of another transfer device according to the present invention;
FIG. 8 is a schematic view of an exploded structure of the transfer device of the present invention;
FIG. 9 is a schematic perspective view of the conveyor line of the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 9 at A;
fig. 11 is a partial enlarged view at B in fig. 9;
FIG. 12 is a schematic view of a structure of the conveyor line stop of the present invention;
FIG. 13 is a schematic perspective view of the glue rolling device of the present invention;
FIG. 14 is a schematic view showing an internal structure of the glue applying device and the translation and elevation device of the glue spreading roller in the glue rolling device according to the present invention;
FIG. 15 is a schematic view showing an internal structure of a pipe driving apparatus in the roll coating apparatus according to the present invention;
fig. 16 is a partially exploded view of the tubular driving device of the glue rolling device of the present invention.
In the figure: 1. the automatic feeding device comprises a feeding rack, 2 chain plate conveying belts, 3 pipe fittings, 4 a bin, 5 a first straight vibrating chute, 6 a second straight vibrating chute, 7 a first straight line feeder, 8 a second straight line feeder, 9 a reference baffle, 10 a baffle frame, 11 an upstream section, 12 a feed back chute, 13 a speed reducing motor, 14 a strip plate, 15 a vertical plate, 16 a feeding speed regulator, 17 a guide inclined plane, 18 a turnover cover, 19 a supporting spring, 20 an observation window, 21 a handle, 22 a side plate, 23 a protective cover plate, 24 a material blocking cover, 25 a movable cover plate, 26 a plug board frame, 27 an adjustable ground foot, 28 a feeding device, 29 a conveying device, 30 a transfer device, 31 a base plate, 32 a sliding rail, 33 a linear bearing, 34 a cylinder, 35 a connecting block, 36 a mounting plate, 37 a clamping jaw assembly, 38 a lifting cylinder and 39 an output shaft, 40. the device comprises a lifting plate, 41 parts of a clamping cylinder, 42 parts of a clamping claw plate, 43 parts of a transfer valve group, 44 parts of a through groove, 45 parts of a slide rail seat, 46 parts of a mounting groove, 47 parts of an elastic buffer block, 48 parts of a translation limit switch, 49 parts of a fixed seat, 50 parts of a guide rod, 51 parts of a switch plate, 52 parts of a descending limit switch, 53 parts of an ascending limit switch, 54 parts of an end plate, 55 parts of a clamping plate, 56 parts of an expansion rod, 57 parts of a compression spring, 58 parts of a clamping claw seat, 59 parts of a positioning plunger, 60 parts of a pressing block, 61 parts of a position sensor, 62 parts of a lifting drag chain, 63 parts of a translation drag chain, 64 parts of a shield plate, 65 parts of a fixed column, 66 parts of a conveying adjusting mechanism, 67 parts of a conveying frame, 68 parts of a chain conveying belt, 69 parts of a pipe part slideway, 70 parts of a pipe part pressing device, 71 parts of a pressing cylinder, 72 parts of a material, 78. a gluing detection device 79, a color recognition sensor 80, a bracket 81, a correlation device 82, a height adjusting device 83, an L-shaped base 84, a first conveying line 85, a second conveying line 86, a third conveying line 87, a fourth conveying line 88, a material receiving box 89, a glue rolling device 90, a main frame 91, a glue coating roller 92, a gluing roller 93, a gluing roller base 94, a pipe fitting roller 95, a roller base 96, a glue distribution conveying device 97, a gluing motor 98, a transmission mechanism 99, a lifting motor 100, a lifting screw rod 101, a lifting base 102, a lifting guide post 103, an adjusting guide rod 104, an adjusting screw rod 105, an interval adjusting motor 106, a synchronous belt 107, a screw rod nut 107, a gear set 108, a gluing motor 109, a fixing base 110, a translation guide rod 111, a translation guide rod 112, a translation cylinder 113, a lifting cylinder 113, 114. glue spreader mounting plate, 115 lifting guide rod, 116 inverted V-shaped frame, 117 coupling, 118 sliding sleeve.
Detailed Description
The following is a further description of the embodiments of the present invention by way of examples and with reference to the accompanying drawings.
Example 1
In embodiment 1 shown in fig. 1, fig. 2 and fig. 3, a fully automatic inner coating production line for an outer tube of a bushing includes a feeding device, a conveying device, a transferring device and a glue rolling device, wherein the conveying device, the transferring device and the glue rolling device are all arranged on a main frame 90, and the feeding device is arranged on one side of the main frame; the feeding device 28 comprises a pipe lifting device, a pipe linear transfer device and a pipe screening device; the conveying device 29 comprises a first conveying line 84, a second conveying line 85, a third conveying line 86 and a fourth conveying line 87 which are sequentially arranged, the four conveying lines are arranged in parallel in a back-and-forth turning conveying mode, each conveying line is provided with a heating device for heating and drying the conveyed pipe fittings, and the heating devices are hot air heating devices; the input of first transfer chain is connected with feedway's output, and the output and the material receiving box 88 of fourth transfer chain are connected, move and carry device 30 for three, set up respectively between the tip of two adjacent transfer chains, move and carry the device and include that a perpendicular and built on stilts base plate 31 that sets up, the setting moves on the base plate and carry cylinder 34 and two clamping jaw subassemblies 37 that are used for snatching pipe fitting 3, rubber coating device 89 be three, set up respectively and move between two adjacent transfer chains and carry the device below, still be equipped with on the main frame and join in marriage gluey conveyor 96, join in marriage gluey conveyor and be connected for the rubber coating device provides glue. The full-automatic lining outer pipe internal glue coating production line further comprises a main controller, and the main controller is connected with the feeding device, the conveying device, the transferring device, the glue rolling device and the heating device.
The pipe fitting hoisting device comprises a feeding rack 1 and a chain plate conveying belt 2 (see figure 4) obliquely arranged on the feeding rack, the chain plate conveying belt is driven by a speed reducing motor 13, the belt surface of the chain plate conveying belt is formed by arranging strip plates 14, a vertical plate 15 used for preventing pipe fittings from sliding is vertically arranged on the belt surface, and the vertical plate is arranged in the length direction of the chain plate conveying belt at equal intervals. Both sides of the chain plate conveying belt are provided with side plates 22, a protective cover plate 23 is arranged above the chain plate conveying belt higher than the storage bin, a material blocking cover 24 is arranged above the chain plate conveying belt lower than the storage bin, a movable cover plate 25 is arranged at the high end of the chain plate conveying belt, the movable cover plate is positioned above a first always vibrating chute, the protective cover plate and the movable cover plate are both transparent structures, and handles are arranged on the movable cover plate.
The low tip of link joint conveyer belt is equipped with the feed bin 4 (the pipe fitting that shows multiple diameter in the picture) that holds pipe fitting 3 (being the bush outer tube), and the feed bin is whole to be the rectangle, and the bottom of feed bin is equipped with direction inclined plane 17, is equipped with flip 18 on the feed bin, all is equipped with supporting spring 19 (the direction inclined plane of feed bin bottom does not draw in the picture) between flip both sides and the feed bin lateral wall, is equipped with observation window 20 and handle 21 on the flip.
The high end part of the chain plate conveying belt is connected with a pipe fitting linear conveying device, the pipe fitting linear conveying device comprises a first straight vibrating chute 5 used for pipe fitting translation and a second straight vibrating chute 6 used for pipe fitting output, the first straight vibrating chute and the second straight vibrating chute are respectively driven by a first linear feeder 7 and a second linear feeder 8, the first linear feeder is a HD-SX400-3D electromagnetic type large linear feeder, and the second linear feeder is a HD-ZC200 electromagnetic type heavy-load linear feeder. A discharge hole is formed below the high end part of the chain plate conveyor belt, the first straight vibrating chute is positioned below the discharge hole, the first straight vibrating chute is fixed on the first linear feeder, and the outlet end of the first straight vibrating chute is opposite to the inlet end of the second straight vibrating chute. The second straight vibrating chute is positioned at the downstream side of the first straight vibrating chute, the second straight vibrating chute is fixed on the second linear feeder, and the outlet end of the second straight vibrating chute corresponds to the inlet end of the first conveying line.
The pipe fitting sieving mechanism includes a benchmark baffle 9, the benchmark baffle passes through baffle frame 10 and sets up in the second directly 11 tops of the upper reaches section of spout that shakes, and first spout and the second directly shakes and is the arc wall, and the second directly shakes the upper reaches section of spout and be the shallow slot structure, and the second directly shakes highly being less than the second and directly shakes the height of spout upstream section cell wall, and the second directly shakes the upper reaches section both sides of spout and forms the feed back breach. The baffle frame is the shape of falling L, includes a montant and sets up to be the crossbearer at the montant top, and the lower extreme of montant is fixed in the feed frame, is equipped with the baffle draw-in groove on the crossbearer, the benchmark baffle is inserted and is established in the baffle draw-in groove, is equipped with the omega shape breach that the opening is decurrent on the benchmark baffle, the size of omega shape breach and the external diameter looks adaptation of pipe fitting and its opening width are less than the external diameter of pipe fitting. A return chute 12 which is obliquely arranged is arranged below the upstream section of the second direct vibration chute, and the lower end of the return chute is connected with the storage bin; the feeding rack is provided with a speed regulator 16, and the main controller is connected with the chain plate conveying belt, the first linear feeder and the second linear feeder through the speed regulator and controls the working states of the chain plate conveying belt, the first linear feeder and the second linear feeder. One side of the feeding rack is provided with a spile rack 26 for storing the reference baffle, and the bottom of the feeding rack is provided with an adjustable foot margin 27.
Move and carry device 30 as shown in fig. 67, including a perpendicular and built on stilts base plate 31 that sets up, the leading flank of base plate is equipped with a set of slide rail 32 that the level was arranged, be equipped with linear bearing 33 on the slide rail (see fig. 8), the slide rail is two, is equipped with two linear bearing on the every slide rail, and the slide rail passes through the slide rail seat 45 at both ends to be fixed on the base plate, the slide rail seat be the strip, the vertical mounting groove 46 that is equipped with in base plate both sides, the slide rail seat is fixed in the mounting groove, the last elastic buffer piece 47 that is equipped with of linear bearing all is equipped with translation limit switch 48. The base plate is provided with a through groove 44 parallel to the slide rail, the base plate is provided with a transfer cylinder 34, the transfer cylinder is horizontally arranged on the rear side surface of the base plate, and the output end of the transfer cylinder is fixed with the rear side surface of one of the slide rails through a connecting block 35 which transversely penetrates through the through groove. The front side surfaces of the linear bearings are fixedly provided with mounting plates 36, the mounting plates are fixedly arranged on the front side surfaces of the four linear bearings of the slide rail, and two clamping jaw assemblies 37 are fixedly arranged on the mounting plates in parallel from left to right; the rear side of the base plate is provided with a transfer valve set 43, and the main controller controls a transfer cylinder, a lifting cylinder and a clamping cylinder through the transfer valve set. When the transfer cylinder works, the connecting block drives the linear bearing to move left and right, and the linear bearing drives the mounting plate and the clamping jaw assembly on the mounting plate to move left and right.
Clamping jaw assembly includes a lift cylinder 38 that is used for the clamping jaw to go up and down, the output shaft 39 lower extreme of lift cylinder is fixed with a lifter plate 40, and the below of lifter plate is equipped with the centre gripping cylinder 41 that the level was arranged, the both ends and a pair of clamping jaw board 42 of centre gripping cylinder are connected, and clamping jaw assembly includes fixing base 49, the vertical recess that is equipped with in central authorities of fixing base, the lift cylinder sets up in the recess, wears to be equipped with guide arm 50 in the fixing base of lift cylinder both sides, the lower tip of guide arm with the lifter plate is fixed, and when the lift cylinder moved, drive lifter plate and clamping jaw assembly and reciprocate. Switch boards 51 are arranged at the upper end and the lower end of the fixing seat, a descending limit switch 52 is arranged on the switch board at the upper end of the fixing seat, an ascending limit switch 53 is arranged on the switch board at the lower end of the fixing seat, the descending limit switch at the upper end of the fixing seat and an end plate 54 arranged at the upper end of the guide rod form a descending limit device, and the ascending limit switch at the lower end of the fixing seat and a lifting board at the lower end of the guide rod.
The lifter plate below is equipped with the grip block 55 parallel with the lifter plate, the centre gripping cylinder transversely fixes the lower surface at the grip block, and the upper surface both sides of grip block are equipped with telescopic link 56, the lower extreme and the grip block of telescopic link are fixed, and telescopic link slidable passes lifter plate and its upper end and is located the top of lifter plate, and the cover is equipped with compression spring 57 on the telescopic link between grip block and the lifter plate. The cylinder shafts at the two ends of the clamping cylinder are connected with the clamping jaw seat 58, the lower end of the clamping jaw seat is provided with a clamping groove, the clamping jaw plates are inserted into the clamping groove and fixed through the positioning plunger 59, the lower ends of the clamping jaw plates incline towards one side of the clamping cylinder, and when the clamping cylinder acts, the distance between the clamping jaw plates at the two sides is increased or reduced. A pressing block 60 is arranged below the clamping cylinder, a T-shaped groove is formed in the middle of the bottom surface of the clamping cylinder, and the upper end of the pressing block is inserted into the T-shaped groove; one side of the lifting plate close to the telescopic rod is provided with a position sensor 61, and the telescopic rod and the position sensor form a compression detection device. Be equipped with the tow chain on the base plate, the tow chain includes lift tow chain 62 and translation tow chain 63, the tow chain connect on the tow chain fixing base. The front sides of the two clamping jaw assemblies are provided with a shield plate 64 which is fixed on the mounting plate by fixing posts 65.
The conveyor 29 comprises four conveyor lines (see fig. 9) of similar structure, each conveyor line comprises a long-strip-shaped conveyor frame 67, a chain conveyor belt 68 is arranged on each conveyor frame, the chain conveyor belt is driven by a speed reduction motor, and a pipe fitting slide way 69 is arranged above each chain conveyor belt. The output ends of the first conveying line, the second conveying line and the third conveying line are respectively provided with a pipe fitting pressing device 70, and the pipe fitting pressing devices comprise pressing cylinders 71 and pressing blocks (see figure 11); the tail ends of the first conveying line, the second conveying line and the third conveying line are provided with a material blocking device 72 (see fig. 12), the material blocking device comprises a Z-shaped bottom plate 73 and a material blocking cylinder 74 arranged on the Z-shaped bottom plate, the upper portion of the Z-shaped bottom plate is hinged with a pressing plate 75, the pressing plate is connected with the material blocking cylinder through a material blocking spring 76, and a proximity sensor 77 is further arranged on the material blocking device. The input ends of the second conveying line, the third conveying line and the fourth conveying line are provided with a gluing detection device 78, the gluing detection device comprises a color recognition sensor 79 (see fig. 10), and the gluing detection device is fixed on the conveying frame through a support 80; a conveying adjusting mechanism 66 (see fig. 11) is further arranged on the conveying frame of the conveying line, and the main controller adjusts the conveying speed of the pipe fittings on the conveying line through the conveying adjusting mechanism; the carriage is further provided with a correlation device 81 and a height adjustment device 82, and the carriage is fixed through an L-shaped base 83.
The glue rolling device comprises a glue roller 91, a glue roller gluing device, a glue roller translation device, a glue roller lifting device and a pipe fitting driving device (see figure 13), wherein the glue roller gluing device is arranged in the lower space of the n-shaped frame 116, and the glue roller translation device is arranged above the n-shaped frame; the glue rolling device further comprises a glue coating controller, and the main controller is connected with and controls the working states of the glue coating device of the glue coating roller, the glue coating roller translation device, the glue coating roller lifting device and the pipe fitting driving device through the glue coating controller. The glue spreader comprises a roll shaft and a roller brush movably sleeved on the roll shaft, the glue spreader is arranged on a glue spreading roller seat 93 above the glue spreading roller, and the glue spreading roller seat is connected with a glue spreading roller translation device and a glue spreading roller lifting device. The glue spreading device of the glue spreading roller comprises two glue spreading rollers 92, the two glue spreading rollers are arranged in parallel up and down, the two glue spreading rollers are connected with a glue spreading motor 109 through a gear set 108, the peripheral surfaces of the two glue spreading rollers are in contact, the rotating directions of the two glue spreading rollers are opposite, the lower portion of the glue spreading roller positioned below is in contact with glue, and the glue spreading motor is a speed reducing motor (see figure 14). The glue spreading roller translation device comprises a fixed seat 110, two translation guide rods 111 are horizontally arranged on the fixed seat, the glue spreading roller seat can be slidably arranged on the translation guide rods, a translation cylinder 112 is further arranged between the glue spreading roller seat and the fixed seat, the translation cylinder is a rodless cylinder, and the glue spreading roller seat slides back and forth on the translation guide rods when the translation cylinder works. The glue spreader lifting device comprises a lifting cylinder 113 vertically arranged on the glue spreading roller base, the lifting cylinder is connected with a glue spreading roller mounting plate 114 through a cylinder shaft, the glue spreading roller is fixed on the glue spreading roller mounting plate, lifting guide rods 115 penetrating through the glue spreading roller base are arranged on two sides of the cylinder shaft, the lower ends of the lifting guide rods are fixed on the glue spreading roller mounting plate, and the glue spreading roller mounting plate moves up and down relative to the glue spreading roller base when the lifting cylinder works.
The pipe driving device comprises two pipe rollers 94 for driving the pipe to rotate, and the pipe rollers are respectively arranged on two roller bases 95; the pipe fitting cylinder is driven by a gluing motor 97, the gluing motor is connected with the pipe fitting cylinder through a coupler 117 and a transmission mechanism 98, the rotating directions and the rotating speeds of the two pipe fitting cylinders are the same, and the gluing motor is a speed reducing motor (see figure 15). The pipe fitting driving device further comprises a roller lifting device, the roller lifting device comprises a lifting motor 99, the lifting motor is connected with a lifting seat 101 through a coupler and a lifting lead screw 100, the roller seat is arranged on the lifting seat, lifting guide pillars 102 penetrating through the lifting seat are arranged on two sides of the lifting lead screw, a sliding sleeve is arranged between the lifting guide pillars and the lifting seat, the sliding sleeve is an oil-free bushing, and the lifting motor is a stepping motor. The pipe fitting driving device further comprises a roller spacing adjusting device, the roller spacing adjusting device comprises adjusting guide rods 103 horizontally fixed on the lifting seats, the two roller seats are slidably arranged on the adjusting guide rods, and sliding sleeves 118 are arranged between the roller seats and the adjusting guide rods and are oil-free bushes. Adjusting screw rods 104 penetrate through the two roller bases, one ends of the adjusting screw rods are connected with an interval adjusting motor 105, and the interval adjusting motor is a stepping motor. The spacing adjusting motor is arranged below the adjusting screw rod and is connected with the adjusting screw rod through a synchronous belt 106, two lead screw nuts 107 (shown in figure 16) are arranged on the adjusting screw rod and are respectively fixed with the two roller bases, and when the adjusting screw rod rotates, the distance between the two roller bases is increased or shortened.
The invention relates to a production process of a full-automatic lining outer pipe internal glue coating production line, which comprises the following steps:
a. the feeding device lifts the pipe fittings, and the pipe fittings which are orderly arranged are conveyed to the input end of the first conveying line through linear conveying and screening of the pipe fittings;
b. the first conveying line conveys the pipe fittings from the input end to the output end, and the heating device preheats the pipe fittings in conveying;
c. the transfer device transfers the pipe fitting at the output end of the first conveying line to the glue rolling device, the glue rolling device performs primer roll coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting subjected to primer roll coating to the input end of the second conveying line;
d. the second conveying line conveys the pipe fittings from the input end to the output end, and the heating device heats and dries the conveyed pipe fittings;
e. the transfer device transfers the pipe fitting at the output end of the second conveying line to the glue rolling device, the glue rolling device performs first layer glue rolling coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting after the first layer glue rolling coating to the input end of the third conveying line;
f. the third conveying line conveys the pipe fittings from the input end to the output end, and the heating device heats and dries the conveyed pipe fittings;
g. the transfer device transfers the pipe fitting at the output end of the third conveying line to the glue rolling device, the glue rolling device performs second layer glue rolling coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting subjected to the second layer glue rolling coating to the input end of the fourth conveying line;
h. the fourth conveying line conveys the pipe fittings from the input end to the output end, the heating device heats and dries the pipe fittings in conveying, and the pipe fittings output from the fourth conveying line enter the material receiving box.
The pipe fitting lifting device in the feeding device lifts the pipe fitting to a higher position, and the pipe fitting is orderly arranged by the pipe fitting linear transfer device and the pipe fitting screening device so as to be conveniently butted with the conveying device. The four conveying lines arranged in sequence are used for conveying the pipe fittings in the whole process; the first conveying line is used for conveying the pipe fitting to a primer roller coating station from a feeding device and preheating the pipe fitting in the conveying process; the second conveying line is used for conveying the pipe fitting from the primer roller coating station to the first layer of surface glue roller coating station, and heating and drying the pipe fitting subjected to primer roller coating in the conveying process; the third conveying line is used for conveying the pipe fitting from the first layer of surface glue roller coating station to the second layer of surface glue roller coating station, and heating and drying the pipe fitting subjected to the first layer of surface glue roller coating in the conveying process; the fourth conveying line is used for conveying the pipe fittings to the material receiving box from the second layer glue rolling coating station, and heating and drying the pipe fittings subjected to the second layer glue rolling coating in the conveying process, so that the pipe fittings in the whole process are conveyed. The three transfer devices are used for moving the pipe fittings between the glue rolling station and two adjacent conveying lines, namely moving the pipe fittings at the tail ends of the conveying lines on the upstream side to the glue rolling station, and simultaneously moving the pipe fittings which are subjected to glue coating on the glue rolling station to the conveying lines on the downstream side. In the two clamping jaw assemblies, one clamping jaw assembly is used for moving the pipe fitting from the upstream side conveying line to the glue rolling device, the other clamping jaw assembly is used for moving the pipe fitting which is subjected to glue coating on the glue rolling device to the downstream side conveying line, and the two clamping jaw assemblies work synchronously and return to the initial position after the pipe fitting is transferred. And the three glue rolling devices are used for gluing the bottom glue, the first layer of surface glue and the second layer of surface glue on the pipe fitting. Therefore, the invention can automatically finish the roller coating and drying operation of the multilayer inner glue of the pipe fitting, is suitable for the pipe fittings with various specifications of 30-100 mm of outer diameter and 30-90 mm of length, and has high production efficiency.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.

Claims (8)

1. A full-automatic inner coating production line for a bushing outer pipe comprises a feeding device, a conveying device, a transferring device and a glue rolling device, and is characterized in that the feeding device (28) comprises a pipe lifting device, a pipe linear transferring device and a pipe screening device; the conveying device (29) comprises a first conveying line (84), a second conveying line (85), a third conveying line (86) and a fourth conveying line (87) which are sequentially arranged, each conveying line is provided with a heating device for heating and drying the conveyed pipe fittings, the input end of the first conveying line is connected with the output end of the feeding device, the output end of the fourth conveying line is connected with the material receiving box (88), the number of the transfer devices (30) is three, the three transfer devices are respectively arranged between the end parts of the two adjacent conveying lines, each transfer device comprises a vertical and overhead base plate (31), a transfer cylinder (34) arranged on the base plate and two clamping jaw assemblies (37) used for grabbing the pipe fittings (3), the number of the glue rolling devices (89) is three, the glue rolling devices are respectively arranged below the transfer devices between the two adjacent conveying lines, and the full-automatic internal glue coating production line for the bushing outer pipe further comprises an internal glue coating device, the main controller is connected with the feeding device, the conveying device, the transferring device, the glue rolling device and the heating device; the pipe fitting lifting device comprises a feeding rack (1) and a chain plate conveying belt (2) obliquely arranged on the feeding rack, a storage bin (4) for containing a pipe fitting is arranged at the lower end of the chain plate conveying belt, and the high end of the chain plate conveying belt is connected with a pipe fitting linear transfer device; the pipe fitting linear transfer device comprises a first linear vibration sliding groove (5) for pipe fitting translation and a second linear vibration sliding groove (6) for pipe fitting output, and the first linear vibration sliding groove and the second linear vibration sliding groove are respectively driven by a first linear feeder (7) and a second linear feeder (8); the pipe screening device comprises a reference baffle (9), the reference baffle is arranged above an upstream section (11) of the second direct vibration sliding chute through a baffle frame (10), a return chute (12) which is obliquely arranged is arranged below the upstream section of the second direct vibration sliding chute, and the lower end of the return chute is connected with the stock bin; the chain plate conveying belt is driven by a speed reducing motor (13), the belt surface of the chain plate conveying belt is formed by arranging strip-shaped plates (14), vertical plates (15) for preventing the pipe fittings from sliding off are vertically arranged on the belt surface, and the vertical plates are arranged at equal intervals in the length direction of the chain plate conveying belt; the feeding frame is also provided with a feeding speed regulator (16), and the main controller is connected with the chain plate conveying belt, the first linear feeder and the second linear feeder through the feeding speed regulator; the glue rolling device comprises a glue roller (91), a glue roller gluing device, a glue roller translation device, a glue roller lifting device, a pipe fitting driving device and a glue mixing conveying device (96), the glue roller comprises a roller shaft and a roller brush movably sleeved on the roller shaft, the glue roller gluing device comprises a glue roller (92), the glue roller is arranged on a glue roller seat (93) above the glue roller, and the glue roller seat is connected with the glue roller translation device and the glue roller lifting device; the pipe fitting driving device comprises two pipe fitting rollers (94) for driving the pipe fitting to rotate, and the pipe fitting rollers are respectively arranged on two roller bases (95); the pipe fitting rollers are driven by a gluing motor (97), the gluing motor is connected with the pipe fitting rollers through a transmission mechanism (98), and the rotating directions and the rotating speeds of the two pipe fitting rollers are the same; the pipe fitting driving device further comprises a roller lifting device, the roller lifting device comprises a lifting motor (99), the lifting motor is connected with a lifting seat (101) through a lifting screw rod (100), the roller seat is arranged on the lifting seat, lifting guide pillars (102) penetrating through the lifting seat are arranged on two sides of the lifting screw rod, and the lifting motor is a stepping motor; the pipe fitting driving device further comprises a roller spacing adjusting device, the roller spacing adjusting device comprises an adjusting guide rod (103) horizontally fixed on the lifting seat, the two roller seats are slidably arranged on the adjusting guide rod, adjusting screw rods (104) penetrate through the two roller seats, one end of each adjusting screw rod is connected with a spacing adjusting motor (105), and the spacing adjusting motor is a stepping motor; the spacing adjusting motor is arranged below the adjusting screw rod and is connected with the adjusting screw rod through a synchronous belt (106), two screw rod nuts (107) are arranged on the adjusting screw rod and are respectively fixed with the two roller bases, and when the adjusting screw rod rotates, the distance between the two roller bases is increased or shortened; the glue rolling device also comprises a glue rolling controller, and the glue rolling controller is connected with the glue spreading roller gluing device, the glue spreading roller translation device, the glue spreading roller lifting device and the pipe fitting driving device; when the glue rolling device works, the pipe fittings are arranged on the two pipe fitting rollers, the gluing rollers are in contact with glue, the gluing rollers rotate and are in contact with the gluing rollers to adhere the glue to the gluing rollers, the gluing rollers move into the pipe fittings and cling to the inner walls of the pipe fittings, the pipe fitting rollers drive the pipe fittings to rotate, and the pipe fittings rotate to drive the gluing rollers to rotate and coat the glue on the gluing rollers on the pipe fittings.
2. The full-automatic inner coating production line for the bushing outer pipe as claimed in claim 1, wherein the baffle frame is in an inverted L shape and comprises a vertical rod and a cross frame arranged on the top of the vertical rod, the lower end of the vertical rod is fixed on the feeding rack, the cross frame is provided with a baffle clamping groove, the reference baffle is inserted into the baffle clamping groove, the reference baffle is provided with an omega-shaped notch with a downward opening, the size of the omega-shaped notch is matched with the outer diameter of the pipe, and the opening width of the omega-shaped notch is smaller than the outer diameter of the pipe; the first straight vibration chute and the second straight vibration chute are arc-shaped chutes, a discharge port is formed below the high end part of the chain plate conveying belt, the first straight vibration chute is positioned below the discharge port, the first straight vibration chute is fixed on the first linear feeder, the second straight vibration chute is fixed on the second linear feeder, the outlet end of the first straight vibration chute is opposite to the inlet end of the second straight vibration chute, and the outlet end of the second straight vibration chute is corresponding to the inlet end of the first conveying belt; the upstream section of the second direct vibration sliding groove is of a shallow groove structure, the height of the groove wall of the upstream section of the second direct vibration sliding groove is smaller than that of the groove wall of the downstream section of the second direct vibration sliding groove, and feed back gaps are formed on two sides of the upstream section of the second direct vibration sliding groove.
3. The full-automatic inner coating production line for the outer pipe of the bushing according to claim 1, characterized in that the front side of the base plate is provided with two horizontally arranged slide rails (32), each slide rail is provided with two linear bearings (33), the shifting cylinder is connected with the linear bearings on the slide rails through connecting blocks (35), the front side of each linear bearing is fixed with a mounting plate (36), the clamping jaw assemblies are arranged on the mounting plates in a left-right parallel manner, the base plate is provided with through grooves (44) parallel to the slide rails, the shifting cylinder is arranged on the rear side of the base plate in a horizontal direction, and the output end of the shifting cylinder is fixed with the rear side of each linear bearing through the connecting blocks which cross the through grooves; when the transfer cylinder works, the connecting block drives the linear bearing to move left and right, and the linear bearing drives the mounting plate and the clamping jaw assembly on the mounting plate to move left and right; the slide rail is fixed on the base plate through slide rail seats (45) at two ends, the slide rail seats are strip-shaped, mounting grooves (46) are vertically formed in two sides of the base plate, the slide rail seats are fixed in the mounting grooves, elastic buffer blocks (47) are arranged on the linear bearings, and translation limit switches (48) are arranged on the slide rail seats at two sides; the clamping jaw assembly comprises a lifting cylinder (38) used for lifting the clamping jaw, the lower end of an output shaft (39) of the lifting cylinder is fixed with a lifting plate (40), a clamping cylinder (41) horizontally arranged is arranged below the lifting plate, and two ends of the clamping cylinder are connected with a pair of clamping jaw plates (42); the clamping jaw assembly comprises a fixed seat (49), a groove is vertically formed in the center of the fixed seat, the lifting cylinder is arranged in the groove, guide rods (50) penetrate through the fixed seats on the two sides of the lifting cylinder, the lower end of each guide rod is fixed with the lifting plate, and the lifting cylinder drives the lifting plate and the clamping jaw assembly to move up and down when acting; the rear side surface of the base plate is provided with a transfer valve group (43), and the main controller controls a transfer cylinder, a lifting cylinder and a clamping cylinder through the transfer valve group.
4. The full-automatic inner coating production line for the bushing outer pipe according to claim 3, wherein switch plates (51) are arranged at the upper end and the lower end of the fixed seat, a descending limit switch (52) is arranged on the switch plate at the upper end of the fixed seat, an ascending limit switch (53) is arranged on the switch plate at the lower end of the fixed seat, the descending limit switch at the upper end of the fixed seat and an end plate (54) arranged at the upper end of the guide rod form a descending limit device, and the ascending limit switch at the lower end of the fixed seat and a lifting plate at the lower end of the guide; a clamping plate (55) parallel to the lifting plate is arranged below the lifting plate, the clamping cylinder is transversely fixed on the lower surface of the clamping plate, telescopic rods (56) are arranged on two sides of the upper surface of the clamping plate, the lower ends of the telescopic rods are fixed with the clamping plate, the telescopic rods slidably penetrate through the lifting plate, the upper ends of the telescopic rods are positioned above the lifting plate, and compression springs (57) are sleeved on the telescopic rods between the clamping plate and the lifting plate; the clamping cylinder is characterized in that cylinder shafts at two ends of the clamping cylinder are connected with a clamping jaw seat (58), a clamping groove is formed in the lower end of the clamping jaw seat, the clamping jaw plates are inserted into the clamping groove and fixed through a positioning plunger (59), the lower ends of the clamping jaw plates incline to one side of the clamping cylinder, and when the clamping cylinder acts, the distance between the clamping jaw plates at two sides is increased or reduced; a pressing block (60) is arranged below the clamping cylinder, a T-shaped groove is formed in the middle of the bottom surface of the clamping cylinder, and the upper end of the pressing block is inserted into the T-shaped groove; one side of the lifting plate close to the telescopic rod is provided with a position sensor (61), and the telescopic rod and the position sensor form a compression detection device.
5. The full-automatic inner glue coating production line for the bushing outer tubes according to claim 1 is characterized in that the conveying line comprises an elongated conveying frame (67), a chain conveying belt (68) is arranged on the conveying frame, a tube slide way (69) is arranged above the chain conveying belt, the output ends of the first conveying line, the second conveying line and the third conveying line are respectively provided with a tube pressing device (70), and the tube pressing devices comprise pressing air cylinders (71) and pressing blocks; the tail end that first transfer chain, second transfer chain and third sent the line is equipped with dam device (72), and dam device includes Z shape bottom plate (73) and sets up fender material cylinder (74) on Z shape bottom plate, and the upper portion of Z shape bottom plate articulates there is clamp plate (75), the clamp plate is connected with fender material cylinder through keeping off material spring (76), still is equipped with proximity sensor (77) on the dam device.
6. The full-automatic inner coating production line for the outer pipe of the bushing, as recited in claim 1, is characterized in that the input ends of the second conveying line, the third conveying line and the fourth conveying line are provided with a coating detection device (78), the coating detection device comprises a color recognition sensor (79), and the coating detection device is fixed on a conveying frame through a bracket (80); the conveying frame of the conveying line is further provided with a conveying adjusting mechanism (66), a correlation device (81) and a height adjusting device (82), and the conveying frame is fixed through an L-shaped base (83).
7. The fully automatic internal gluing production line for the external pipe of the bushing according to claim 1, wherein two gluing rollers are arranged side by side up and down, and are connected with a gluing motor (109) through a gear set (108), the two gluing rollers are in contact with each other on the outer peripheral surfaces and rotate in opposite directions, the lower part of the gluing roller below is in contact with glue, and the gluing motor is a speed reduction motor; the glue spreading roller translation device comprises a fixed seat (110), two translation guide rods (111) are horizontally arranged on the fixed seat, the glue spreading roller seat is slidably arranged on the translation guide rods, a translation cylinder (112) is further arranged between the glue spreading roller seat and the fixed seat, the translation cylinder is a rodless cylinder, and when the translation cylinder works, the glue spreading roller seat slides back and forth on the translation guide rods; the glue spreader lifting device comprises a lifting cylinder (113) vertically arranged on a glue spreading roller seat, the lifting cylinder is connected with a glue spreading roller mounting plate (114) through a cylinder shaft, the glue spreading roller is fixed on the glue spreading roller mounting plate, lifting guide rods (115) penetrating through the glue spreading roller seat are arranged on two sides of the cylinder shaft, the lower end of each lifting guide rod is fixed on the glue spreading roller mounting plate, and the glue spreading roller mounting plate moves up and down relative to the glue spreading roller seat when the lifting cylinder works.
8. The production process of the full-automatic inner coating production line of the bushing outer tube according to claim 1 is characterized by comprising the following steps of:
a. the feeding device lifts the pipe fittings, and the pipe fittings which are orderly arranged are conveyed to the input end of the first conveying line through linear conveying and screening of the pipe fittings;
b. the first conveying line conveys the pipe fittings from the input end to the output end, and the heating device preheats the pipe fittings in conveying;
c. the transfer device transfers the pipe fitting at the output end of the first conveying line to the glue rolling device, the glue rolling device performs primer roll coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting subjected to primer roll coating to the input end of the second conveying line;
d. the second conveying line conveys the pipe fittings from the input end to the output end, and the heating device heats and dries the conveyed pipe fittings;
e. the transfer device transfers the pipe fitting at the output end of the second conveying line to the glue rolling device, the glue rolling device performs first layer glue rolling coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting after the first layer glue rolling coating to the input end of the third conveying line;
f. the third conveying line conveys the pipe fittings from the input end to the output end, and the heating device heats and dries the conveyed pipe fittings;
g. the transfer device transfers the pipe fitting at the output end of the third conveying line to the glue rolling device, the glue rolling device performs second layer glue rolling coating on the inner wall of the pipe fitting, and the transfer device transfers the pipe fitting subjected to the second layer glue rolling coating to the input end of the fourth conveying line;
h. the fourth conveying line conveys the pipe fittings from the input end to the output end, the heating device heats and dries the pipe fittings in conveying, and the pipe fittings output from the fourth conveying line enter the material receiving box.
CN201811197525.3A 2018-10-15 2018-10-15 Full-automatic inner gluing production line and production process for bushing outer pipe Active CN109453954B (en)

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Denomination of invention: Full automatic inner gluing production line and production technology of bushing outer pipe

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