Spraying equipment and method for coating plastic on inner wall of grooved pipe fitting

Abstract

The invention relates to the technical field of spraying equipment, in particular to spraying equipment and method for plastic coating of the inner wall of a grooved pipe fitting. The spraying equipment comprises a machining table, a supporting base and a supporting air cylinder and further comprises an operation assembly; the operation assembly comprises a splicing guide rail, a lantern ring frame, a rotating sleeve, a spray head, a spraying component, a driving component and a connecting component; the two splicing guide rails are connected with the machining table through two sets of corresponding connecting components, the lantern ring frame is arranged on the splicing guide rails in a sleeving mode, the rotating sleeve is rotationally installed on the lantern ring frame, the spraying head is connected with the rotating sleeve through the spraying component, the spraying component is connected with the rotating sleeve, the traveling component is connected with the lantern ring frame, and the connecting components are connected with the machining table. According to the plastic coating device for the grooved pipe fitting, when the inner wall of the bent grooved pipe fitting is sprayed through the arranged components, secondary adjustment or even multiple adjustment is not needed, plastic coating and spraying on the inner wall of the grooved pipe fitting can be directly completed at a time, and the overall spraying efficiency is higher in the actual operation process.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying equipment, and particularly relates to a spraying equipment and method for inner wall plastic coating of grooved pipe fittings. Background Art

[0002] Grooved pipe fittings are pipe fittings that achieve rapid connection of pipelines through clamp connection technology. When grooved pipe fittings are actually used, they usually need to be plastic-coated on the inner wall of the pipe fittings. By forming a plastic protective layer on the inner wall of the grooved pipe fittings, the characteristics of metal strength and plastic corrosion resistance, wear resistance, smoothness, etc. are integrated; Due to the differences in shape and size of existing grooved pipe fittings, it is very difficult to achieve inner wall plastic coating spraying at one time when spraying the inner wall of bent pipe fittings. It is often necessary to use multiple combined sprayings to spray the inner wall of grooved pipe fittings. And for multiple combined sprayings, it is necessary to correspondingly adjust the spraying angle of the spraying equipment and the clamping and fixing positions of the pipe fittings multiple times, resulting in more cumbersome operations during actual spraying, and thus the overall spraying efficiency is relatively low. Summary of the Invention

[0003] The purpose of the present invention is to provide a spraying equipment and method for inner wall plastic coating of grooved pipe fittings, which can directly complete the plastic coating spraying of the inner wall of grooved pipe fittings at one time without secondary or multiple adjustments when spraying the inner wall of bent grooved pipe fittings through the provided components, so that the overall spraying efficiency is higher during actual operation.

[0004] To achieve the above purpose, the present invention provides a spraying equipment and method for inner wall plastic coating of grooved pipe fittings, including a processing table, a support seat, and a support cylinder. The support seat is slidably installed on the processing table, the output end of the support cylinder is connected to the support seat, the support cylinder is fixedly installed on the processing table, and an operation component is further included; The operation component includes a splicing guide rail, a collar frame, a rotating sleeve, a spray head, a spraying component, a traveling component, and a connecting component; There are two splicing guide rails in total. The two splicing guide rails are connected to the processing table through two corresponding groups of connecting components. The collar frame is sleeved on the splicing guide rail. The rotating sleeve is rotatably installed on the collar frame. The spray head is connected to the rotating sleeve through the spraying component. The spraying component is connected to the rotating sleeve and is used to spray the plastic coating raw material from the spray head. The traveling component is connected to the collar frame and is used to drive the collar frame to move on the splicing guide rail. The connecting component is connected to the processing table and is used to drive the corresponding splicing guide rail to move and adjust.

[0005] Among them, the spraying component includes a storage tank, a connecting conduit, an extrusion frame, an internal gear rotating mechanism, a driving component, and an adjusting component. The storage tank is fixedly installed on one side of the rotating sleeve; one side of the connecting conduit is connected to the nozzle, and the other side of the connecting conduit is connected to the storage tank; the extrusion frame is connected to the discharge tank; the internal gear rotating mechanism is connected to the collar frame and is used to drive the rotating sleeve; the driving component is connected to the extrusion frame and is used to drive the extrusion frame to move in the storage tank; the adjusting component is connected to the nozzle and is used to adjust the spraying distance of the nozzle.

[0006] Among them, the traveling component includes clamping wheels, guiding wheels, guide tooth platforms, belt gears, and gear driving components. Two groups of the clamping wheels are rotatably installed on the upper and lower sides of the inner ring of the collar frame; two groups of the guiding wheels are rotatably installed on the left and right sides of the inner ring of the collar frame; a plurality of the guide tooth platforms are fixedly installed on the splicing guide rail; the belt gear is rotatably installed on one side of the collar frame close to the splicing guide rail; the gear driving component is connected to the belt gear and is used to drive the belt gear.

[0007] Among them, the connecting component includes a guiding support, a driving lead screw, and a driving motor. The guiding support is connected to the splicing guide rail and is slidably installed on the processing table; the driving lead screw is threadedly connected to the guiding support and is rotatably installed on the processing table; the output shaft of the driving motor is connected to the driving lead screw, and the driving motor is fixedly installed on the processing table.

[0008] Among them, the driving component includes an internal gear frame, a driving gear, and a driving motor. The internal gear frame is fixedly connected to the extrusion frame and is rotatably installed on the rotating sleeve; the driving gear meshes with the internal gear frame and is rotatably installed on the rotating sleeve; the output shaft of the driving motor is connected to the driving gear, and the driving motor is fixedly installed on the rotating sleeve.

[0009] Among them, the adjusting component includes a guiding support, an adjusting support, an adjusting lead screw, and an adjusting motor. The guiding support is fixedly installed on the rotating sleeve; the adjusting support is slidably installed on the guiding support; the adjusting lead screw is threadedly connected to the adjusting support and is rotatably installed on the guiding support; the output shaft of the adjusting motor is connected to the adjusting lead screw, and the adjusting motor is fixedly installed on the guiding support.

[0010] Among them, the gear drive component includes a sleeved gear, an intermediate gear, a drive gear, and a rotating motor. The sleeved gear is fixedly sleeved on one side of the belt gear; the intermediate gear meshes with the sleeved gear and is rotatably installed in the collar frame; the drive gear meshes with the intermediate gear and is rotatably installed on one side of the collar frame; the output shaft of the rotating motor is connected to the drive gear, and the rotating motor is fixedly installed on one side of the collar frame.

[0011] Among them, the operation component further includes a clamping bracket, a clamping cylinder, a clamping plate, and a tightening component. The clamping bracket is slidably installed on the processing table; the output end of the clamping cylinder is connected to the clamping bracket, and the clamping cylinder is fixedly installed on the processing table; each clamping bracket is fixedly installed with the clamping plate; the tightening component is connected to the clamping bracket and is used for limiting the corresponding two sides of the clamped grooved pipe fitting.

[0012] Among them, the tightening component includes a backing plate, a double-headed screw rod, and a locking motor. Two backing plates are slidably installed on each clamping bracket; the double-headed screw rod is rotatably installed on the clamping bracket, and both sides of the double-headed screw rod are respectively threadedly connected to the two backing plates; the output shaft of the locking motor is connected to the double-headed screw rod, and the locking motor is fixedly installed on one side of the clamping bracket.

[0013] For a spraying device and method for inner wall plastic spraying of grooved pipe fittings according to the present invention, during actual operation, the workpiece to be subjected to inner wall spraying can be first placed on the support seat, and then the support height of the support seat can be adjusted through the support cylinder. After the workpiece is placed, the two splicing guide rails can be spliced through the connecting component to form a complete track with a curvature. The collar frame arranged on the splicing guide rail slides on the complete track composed of the two splicing guide rails through the traveling component. Under the guidance of the collar frame, the spray head can cooperate with the spraying component and the rotating sleeve to perform plastic spraying on the inner wall of the grooved pipe fitting, achieving that when spraying the inner wall of the bent grooved pipe fitting through the provided components, secondary or even multiple adjustments are not required, and the plastic spraying of the inner wall of the grooved pipe fitting can be directly completed at one time, making the overall spraying efficiency higher during actual operation. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0015] Figure 1 It is a schematic structural diagram of the overall spraying device for inner wall plastic spraying of grooved pipe fittings according to the present invention.

[0016] Figure 2 It is a schematic diagram of the installation structure of the support base of the present invention.

[0017] Figure 3 It is a schematic diagram of the installation structure of the collar frame of the present invention.

[0018] Figure 4 It is a schematic diagram of the installation structure of the nozzle of the present invention.

[0019] Figure 5 It is of the present invention Figure 4 Enlarged view at position A.

[0020] Figure 6 It is a schematic diagram of the structure of the rotating sleeve cut open of the present invention.

[0021] Figure 7 It is of the present invention Figure 6 Enlarged view at position B.

[0022] Figure 8 It is a schematic diagram of the structure of the collar frame cut open of the present invention.

[0023] Figure 9 It is of the present invention Figure 8 Enlarged view at position C.

[0024] Figure 10 It is a schematic diagram of the installation structure of the internal gear frame of the present invention.

[0025] Figure 11 It is of the present invention Figure 10 Enlarged view at position D.

[0026] Figure 12 It is a schematic diagram of the structure of the extrusion frame in the extrusion state of the present invention.

[0027] Figure 13 It is a flow chart of the spraying method for coating the inner wall of grooved pipe fittings of the present invention.

[0028] In the figure: 101 - processing table, 102 - support base, 103 - support cylinder, 104 - splicing guide rail, 105 - collar frame, 106 - rotating sleeve, 107 - nozzle, 201 - storage box, 202 - connecting conduit, 203 - extrusion frame, 204 - internal gear rotating mechanism, 301 - clamping wheel, 302 - guiding wheel, 303 - guide tooth platform, 304 - belt gear, 401 - guiding connection bracket, 402 - driving lead screw, 403 - driving motor, 501 - internal gear frame, 502 - driving gear, 503 - driving motor, 601 - guiding bracket, 602 - adjusting bracket, 603 - adjusting lead screw, 604 - adjusting motor, 701 - sleeve gear, 702 - intermediate gear, 703 - driving gear, 704 - rotating motor, 801 - clamping bracket, 802 - clamping cylinder, 803 - clamping plate, 901 - backing plate, 902 - double-headed lead screw, 903 - locking motor. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0031] Please refer to Figures 1 to 12, the present invention provides a spraying device and method for inner wall plastic spraying of grooved pipe fittings: including a processing table 101, a support base 102, a support cylinder 103 and an operating component. The operating component includes a splicing guide rail 104, a collar frame 105, a rotating sleeve 106, a spray head 107, a spraying component, a traveling component and a connecting component. The spraying component includes a storage tank 201, a connecting conduit 202, an extrusion frame 203, a driving component and an adjusting component. The traveling component includes a guide tooth platform 303, a belt gear 304 and a gear driving component. The connecting component includes a guide connection bracket 401, a driving lead screw 402 and a driving motor 403. The driving component includes an internal tooth frame 501, a driving gear 502 and a driving motor 503. The adjusting component includes a guide bracket 601, an adjusting bracket 602, an adjusting lead screw 603 and an adjusting motor 604. The gear driving component includes a sleeved gear 701, an intermediate gear 702, a driving gear 703 and a rotating motor 704. Through the foregoing solution, it is solved that due to the differences in shape and size of existing grooved pipe fittings, it is very difficult to achieve inner wall plastic spraying at one time when spraying the inner wall of bent pipe fittings, and it is often necessary to use multiple combined sprayings to spray the inner wall of grooved pipe fittings. And for multiple combined sprayings, it is necessary to correspondingly adjust the spraying angle of the spraying device and the clamping and fixing position of the pipe fittings multiple times, resulting in cumbersome operation during actual spraying, and thus the overall spraying efficiency is low.

[0032] Further, the support base 102 is slidably installed on the processing table 101. The output end of the support cylinder 103 is connected to the support base 102. The support cylinder 103 is fixedly installed on the processing table 101. There are two splicing guide rails 104 in total. The two splicing guide rails 104 are connected to the processing table 101 through two corresponding sets of the connecting components. The collar frame 105 is sleeved on the splicing guide rail 104. The rotating sleeve 106 is rotatably installed on the collar frame 105. The spray head 107 is connected to the rotating sleeve 106 through the spraying component. The spraying component is connected to the rotating sleeve 106 for spraying the plastic spraying raw material from the spray head 107. The traveling component is connected to the collar frame 105 for driving the collar frame 105 to move on the splicing guide rail 104. The connecting component is connected to the processing table 101 for driving the corresponding splicing guide rail 104 to move and adjust.

[0033] Specifically, a support boss for cooperating with the support base 102 is provided on the processing table 101. The support base 102 is driven by the provided support cylinder 103. The workpiece to be plastic sprayed can be placed through the provided support base 102, and then the support height of the support base 102 can be adjusted through the support cylinder 103 according to the actual workpiece size.

[0034] Two identical splicing guide rails 104 are installed on the processing table 101 through the provided connecting members. The connection between the two splicing guide rails 104 is a bend turning point. When the two splicing guide rails 104 are spliced, a complete track in a bent state can be formed. The track formed by splicing the two splicing guide rails 104 is located inside the corresponding processed workpiece, and the splicing part of the two splicing guide rails 104 also corresponds to the bent part of the grooved pipe fitting. Thus, when the collar frame 105 slides on the splicing guide rail 104 through the traveling member, the spray head 107 provided on the collar frame 105 can cooperate with the spraying member and the rotating sleeve 106 to perform corresponding spraying on the inside of the workpiece.

[0035] During actual operation, the workpiece that needs to be spray-coated on the inner wall can be first placed on the support seat 102, and then the support height of the support seat 102 can be adjusted through the support cylinder 103. After the workpiece is placed, the two splicing guide rails 104 can be spliced through the connecting members to form a complete track with a curvature. The collar frame 105 provided on the splicing guide rail 104 slides on the complete track formed by the two splicing guide rails 104 through the traveling member. Under the guidance of the collar frame 105, the spray head 107 can cooperate with the spraying member and the rotating sleeve 106 to perform plastic spraying on the inner wall of the grooved pipe fitting, realizing that when spraying the inner wall of the bent grooved pipe fitting through the provided members, no secondary or multiple adjustments are required, and the plastic spraying of the inner wall of the grooved pipe fitting can be directly completed at one time, making the overall spraying efficiency higher during actual operation.

[0036] Furthermore, the storage tank 201 is fixedly installed on one side of the rotating sleeve 106; one side of the connecting conduit 202 is connected to the spray head 107, and the other side of the connecting conduit 202 is connected to the storage tank 201; the extrusion frame 203 is connected to the discharge box; the internal gear rotating mechanism 204 is connected to the collar frame 105 for driving the rotating sleeve 106; the driving component is connected to the extrusion frame 203 for driving the extrusion frame 203 to move in the storage tank 201; the adjustment component is connected to the spray head 107 for adjusting the spraying distance of the spray head 107.

[0037] Furthermore, the internal gear rack 501 is fixedly connected to the extrusion frame 203 and is rotatably installed on the rotating sleeve 106; the driving gear 502 meshes with the internal gear rack 501 and is rotatably installed on the rotating sleeve 106; the output shaft of the driving motor 503 is connected to the driving gear 502, and the driving motor 503 is fixedly installed on the rotating sleeve 106.

[0038] Further, the guiding bracket 601 is fixedly installed on the collar bracket 105; the adjusting bracket 602 is slidably installed on the rotating sleeve 106; the adjusting screw rod 603 is threadedly connected to the adjusting bracket 602 and is rotatably installed on the guiding bracket 601; the output shaft of the adjusting screw rod 603 is connected to the adjusting screw rod 603, and the adjusting motor 604 is fixedly installed on the guiding bracket 601.

[0039] When this embodiment is in use, the rotating sleeve 106 is rotatably arranged on the collar bracket 105, and the rotating sleeve 106 is driven by the internal tooth rotating mechanism 204 arranged on the collar bracket 105. The internal tooth rotating mechanism 204 consists of an internal tooth ring and a gear motor for driving the internal tooth ring to rotate. By driving the internal tooth ring to rotate through the corresponding gear motor, and then driving the rotating sleeve 106 sleeved on the collar bracket 105 to rotate through the internal tooth ring, so as to drive the nozzle 107 to effectively and comprehensively spray the inner wall of the pipe fitting through the rotation of the rotating sleeve 106. A corresponding protective shell is arranged at the position where the collar bracket 105 installs the internal tooth rotating mechanism 204, so as not to affect the normal operation and use of the internal driving structure and the motor during the spraying process.

[0040] A storage tank 201 is fixedly installed on the side of the rotating sleeve 106. The corresponding coating raw material is stored inside the storage tank 201. The discharge port of the storage tank 201 is communicated with the feed port of the nozzle 107 through the connecting conduit 202, and an extrusion frame 203 is arranged on the storage tank 201.

[0041] The extrusion frame 203 consists of corresponding extrusion columns and a connecting plate. The extrusion columns arranged on the extrusion frame 203 are adapted to the storage ring grooves inside the storage tank 201. When the extrusion frame 203 rotates, the extrusion columns arranged on the extrusion frame 203 can extrude the coating raw material inside the storage tank 201, and then enter the nozzle 107 through the connecting conduit 202, and finally spray out the coating raw material through the nozzle 107.

[0042] The connecting conduit 202 is reserved with a certain length to accommodate the adjustment of the nozzle 107. The nozzle 107 is arranged on the adjustment bracket 602, and the adjustment bracket 602 is slidably arranged on the guiding bracket 601. A corresponding adjustment screw rod 603 is arranged on the guiding bracket 601, and the adjustment screw rod 603 is adapted to the threaded hole provided on the bottom plate of the adjustment bracket 602. The adjustment screw rod 603 is fixed to the output shaft of the adjustment motor 604. When the adjustment motor 604 drives the adjustment screw rod 603 to rotate, the adjustment bracket 602 can move on the guiding bracket 601 through the rotation of the adjustment screw rod 603, so as to adjust the spraying position of the nozzle 107.

[0043] The internal tooth rack 501 is connected to the connecting plate of the extrusion rack 203. The internal tooth rack 501 is circular, and corresponding internal tooth grooves are arranged inside the internal tooth rack 501. The driving gear 502 is adapted to the internal tooth grooves arranged on the internal tooth rack 501. The driving gear 502 is driven by the driving motor 503. When the driving motor 503 drives the driving gear 502 to rotate, the driving gear 502 can drive the extrusion rack 203 by driving the internal tooth rack 501, so as to realize the extrusion of the raw materials inside the storage tank 201. A corresponding protective shell is arranged at the position where the rotating sleeve 106 installs the extrusion rack 203 and the corresponding driving structure, so as to ensure the long-term stable operation of the corresponding structure.

[0044] Furthermore, two groups of clamping wheels 301 are rotatably installed on the upper and lower sides of the inner ring of the collar frame 105; two groups of guiding wheels 302 are rotatably installed on the left and right sides of the inner ring of the collar frame 105; a plurality of guide tooth platforms 303 are fixedly installed on the splicing guide rail 104; the belt gear 304 is rotatably installed on one side of the collar frame 105 close to the splicing guide rail 104; the gear driving component is connected to the belt gear 304 and is used to drive the belt gear 304.

[0045] Furthermore, the sleeve gear 701 is fixedly sleeved on one side of the belt gear 304; the intermediate gear 702 meshes with the sleeve gear 701 and is rotatably installed inside the collar frame 105; the driving gear 703 meshes with the intermediate gear 702 and is rotatably installed on one side of the collar frame 105; the output shaft of the rotating motor 704 is connected to the driving gear 703, and the rotating motor 704 is fixedly installed on one side of the collar frame 105.

[0046] When this embodiment is in use, the collar frame 105 is fitted with the upper and lower end faces of the corresponding splicing guide rail 104 through two groups of clamping wheels 301 arranged on the upper and lower sides of the inner ring. At the same time, two groups of guide wheels 302 arranged on the left and right sides of the inner ring of the collar frame 105 are adapted to the guide grooves on both sides of the splicing guide rail 104, so that the collar frame 105 can move stably on the splicing guide rail 104.

[0047] A number of guide tooth platforms 303 with a specified spacing are distributed on the splicing guide rail 104. A belt gear 304 is rotatably arranged on the upper side wall of the inner ring of the collar frame 105. A plurality of tooth platforms are arranged on the outside of the belt gear 304. By means of the cooperation between the plurality of tooth platforms on the outside of the belt gear 304 and the number of guide tooth platforms 303 arranged on the splicing guide rail 104, the collar frame 105 can be driven to move on the splicing guide rail 104, thereby completing the driving of the collar frame 105. The belt gear 304 is driven by the gear driving component.

[0048] The sleeve gear 701 in the gear driving component is fixedly sleeved on the guide post on the side of the belt gear 304. The driving gear 703 is rotatably arranged in the collar frame 105. The driving gear 703 is driven by the rotating motor 704. The sleeve gear 701 rotates following the driving gear 703 through the intermediate gear 702, thereby completing the driving of the belt gear 304.

[0049] Further, the guiding bracket 401 is connected to the splicing guide rail 104 and is slidably installed on the processing table 101; the driving lead screw 402 is threadedly connected to the guiding bracket 401 and is rotatably installed on the processing table 101; the output shaft of the driving motor 403 is connected to the driving lead screw 402, and the driving motor 403 is fixedly installed on the processing table 101.

[0050] When this embodiment is in use, the guiding and connecting bracket 401 is fixed to the splicing guide rail 104 by bolts. The guiding and connecting bracket 401 cooperates with the guiding convex platform provided on the processing table 101. The driving lead screw 402 is adapted to the threaded hole on the top convex plate of the guiding and connecting bracket 401. The driving lead screw 402 is driven by the driving motor 403. In this way, the user can drive the guiding and connecting bracket 401 according to the actual situation by cooperating the driving motor 403 with the driving lead screw 402, so as to drive the splicing guide rail 104, and then complete the splicing of the entire curved track by correspondingly driving the two splicing guide rails 104 on both sides. During actual operation, the corresponding grooved pipe fittings need to be placed on the support base 102 in advance, and then the overall track is matched with the inside of the grooved pipe fittings through the splicing of the two splicing guide rails 104 on both sides, so as to realize the subsequent corresponding operations.

[0051] Preferably, the operation assembly provided by the present invention further includes a clamping bracket 801, a clamping cylinder 802, a clamping plate 803 and a tightening member. The tightening member includes a backing plate 901, a double-headed lead screw 902 and a locking motor 903.

[0052] Furthermore, the clamping bracket 801 is slidably mounted on the processing table 101; the output end of the clamping cylinder 802 is connected to the clamping bracket 801, and the clamping cylinder 802 is fixedly mounted on the processing table 101; each clamping bracket 801 is fixedly mounted with the clamping plate 803; the tightening member is connected to the clamping bracket 801 and is used for limiting the corresponding two sides of the clamped grooved pipe fittings.

[0053] Furthermore, two backing plates 901 are slidably mounted on each clamping bracket 801; the double-headed lead screw 902 is rotatably mounted on the clamping bracket 801, and the two sides of the double-headed lead screw 902 are respectively threadedly connected to the two backing plates 901; the output shaft of the locking motor 903 is connected to the double-headed lead screw 902, and the locking motor 903 is fixedly mounted on one side of the clamping bracket 801.

[0054] During the use of this embodiment, a connecting frame body for installing the clamping bracket 801 is provided on the processing table 101. The clamping bracket 801 is driven by the clamping cylinder 802. There are two groups of the clamping bracket 801 and the clamping cylinder 802 in total. The two groups of the clamping bracket 801 and the clamping cylinder 802 respectively clamp and limit the two ends of the workpiece to be bent. Two backing plates 901 are slidably installed on each clamping bracket 801. The two backing plates 901 are driven by the double-headed screw rod 902 provided on the corresponding clamping bracket 801. The double-headed screw rod 902 is driven by the locking motor 903. The thread directions on both sides of the double-headed screw rod 902 are opposite. When the locking motor 903 drives the double-headed screw rod 902 to rotate, the two backing plates 901 provided on the corresponding clamping bracket 801 will approach or expand towards each other, so as to perform limit fitting on the left and right sides of the pipe fitting. In this way, the upper and lower sides of the pipe fitting can be clamped by the clamping plate 803, and the left and right sides of the pipe fitting can be limited and clamped by the backing plates 901 provided on the clamping bracket 801 in cooperation with the corresponding driving structure, so that the inside of the corresponding grooved pipe fitting can cooperate with the spliced splicing guide rail 104. When clamping and limiting the grooved pipe fitting, it can also be ensured that the complete track formed by splicing the two splicing guide rails 104 can be located on the central axis of the groove hole of the grooved pipe fitting, thereby making the subsequent plastic spraying more stable.

[0055] Please refer to Figure 13 , a spraying method for inner wall plastic spraying of grooved pipe fittings, using the spraying equipment for inner wall plastic spraying of grooved pipe fittings as described above, including the following steps: S1: Place the workpiece to be sprayed on the inner wall on the support seat 102, and then adjust the support height of the support seat 102 through the support cylinder 103; S2: After the workpiece is placed, the two splicing guide rails 104 can be spliced through the connecting members to form a complete track with a curvature; S3: The collar frame 105 provided on the splicing guide rail 104 slides on the complete track formed by the two splicing guide rails 104 through the traveling member; S4: Under the guidance of the collar frame 105, the spray head 107 can cooperate with the spraying member and the rotating sleeve 106 to spray the inner wall of the grooved pipe fitting with plastic.

[0056] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A spraying device for coating the inner wall of a grooved pipe fitting, comprising a processing table, a support seat and a support cylinder. The support seat is slidably mounted on the processing table, and the output end of the support cylinder is connected to the support seat. The support cylinder is fixedly mounted on the processing table. It is characterized in that, it further comprises an operation assembly; The operation assembly includes a splicing guide rail, a collar frame, a rotating sleeve, a spray head, an ejection member, a traveling member and a connecting member; There are two splicing guide rails in total. The two splicing guide rails are connected to the processing table through two corresponding groups of the connecting members. The collar frame is sleeved on the splicing guide rail. The rotating sleeve is rotatably mounted on the collar frame. The spray head is connected to the rotating sleeve through the ejection member. The ejection member is connected to the rotating sleeve and is used to eject the coating raw material from the spray head. The traveling member is connected to the collar frame and is used to drive the collar frame to move on the splicing guide rail. The connecting member is connected to the processing table and is used to drive the corresponding splicing guide rail to move and adjust.

2. The spraying device for coating the inner wall of a grooved pipe fitting according to claim 1, characterized in that, The ejection member includes a storage tank, a connecting conduit, an extrusion frame, an internal gear rotating mechanism, a driving component and an adjusting component. The storage tank is fixedly mounted on one side of the rotating sleeve; one side of the connecting conduit is connected to the spray head, and the other side of the connecting conduit is connected to the storage tank; the extrusion frame is connected to the discharge tank; the internal gear rotating mechanism is connected to the collar frame and is used to drive the rotating sleeve; the driving component is connected to the extrusion frame and is used to drive the extrusion frame to move in the storage tank; the adjusting component is connected to the spray head and is used to adjust the ejection distance of the spray head.

3. The spraying device for coating the inner wall of a grooved pipe fitting according to claim 1, characterized in that, The traveling member includes clamping wheels, guiding wheels, a guide tooth platform, a belt gear and a gear driving component. Two groups of clamping wheels are rotatably mounted on the upper and lower sides of the inner ring of the collar frame; two groups of guiding wheels are rotatably mounted on the left and right sides of the inner ring of the collar frame; a plurality of guide tooth platforms are fixedly mounted on the splicing guide rail; the belt gear is rotatably mounted on one side of the collar frame close to the splicing guide rail; the gear driving component is connected to the belt gear and is used to drive the belt gear.

4. The spraying device for coating the inner wall of a grooved pipe fitting according to claim 1, characterized in that, The connecting member includes a guiding support, a driving lead screw and a driving motor. The guiding support is connected to the splicing guide rail and is slidably mounted on the processing table; the driving lead screw is threadedly connected to the guiding support and is rotatably mounted on the processing table; the output shaft of the driving motor is connected to the driving lead screw, and the driving motor is fixedly mounted on the processing table.

5. The spraying device for coating the inner wall of a grooved pipe fitting according to claim 2, characterized in that, The driving component includes an internal tooth rack, a driving gear, and a driving motor. The internal tooth rack is fixedly connected to the extrusion rack and is rotatably mounted on the rotating sleeve. The driving gear meshes with the internal tooth rack and is rotatably mounted on the rotating sleeve. The output shaft of the driving motor is connected to the driving gear, and the driving motor is fixedly mounted on the rotating sleeve.

6. The spraying device for inner wall plastic coating of grooved pipe fittings according to claim 2, wherein The adjusting component includes a guiding bracket, an adjusting bracket, an adjusting screw rod, and an adjusting motor. The guiding bracket is fixedly mounted on the rotating sleeve. The adjusting bracket is slidably mounted on the guiding bracket. The adjusting screw rod is threadedly connected to the adjusting bracket and is rotatably mounted on the guiding bracket. The output shaft of the adjusting motor is connected to the adjusting screw rod, and the adjusting motor is fixedly mounted on the guiding bracket.

7. The spraying device for inner wall plastic coating of grooved pipe fittings according to claim 3, wherein The gear driving component includes a sleeved gear, an intermediate gear, a driving gear, and a rotating motor. The sleeved gear is fixedly sleeved on one side of the belt gear. The intermediate gear meshes with the sleeved gear and is rotatably mounted in the collar frame. The driving gear meshes with the intermediate gear and is rotatably mounted on one side of the collar frame. The output shaft of the rotating motor is connected to the driving gear, and the rotating motor is fixedly mounted on one side of the collar frame.

8. The spraying device for inner wall plastic coating of grooved pipe fittings according to claim 1, wherein The operating assembly further includes a clamping bracket, a clamping cylinder, a clamping plate, and a tightening member. The clamping bracket is slidably mounted on the processing table. The output end of the clamping cylinder is connected to the clamping bracket, and the clamping cylinder is fixedly mounted on the processing table. Each clamping bracket is fixedly mounted with the clamping plate. The tightening member is connected to the clamping bracket and is used to limit the corresponding two sides of the clamped grooved pipe fitting.

9. The spraying device for inner wall plastic coating of grooved pipe fittings according to claim 8, wherein The tightening member includes a backing plate, a double-headed screw rod, and a locking motor. Two backing plates are slidably mounted on each clamping bracket. The double-headed screw rod is rotatably mounted on the clamping bracket, and the two sides of the double-headed screw rod are respectively threadedly connected to the two backing plates. The output shaft of the locking motor is connected to the double-headed screw rod, and the locking motor is fixedly mounted on one side of the clamping bracket.

10. A spraying method for inner wall plastic coating of grooved pipe fittings, using the spraying equipment for inner wall plastic coating of grooved pipe fittings as described in claim 1, characterized in that, comprises the following steps Place the workpiece to be spray-coated on the inner wall on the support seat, and then adjust the support height of the support seat through the support cylinder. After the workpiece is placed, the two splicing guide rails can be spliced through the connecting member to form a complete track with a curvature. The collar frame arranged on the splicing guide rail slides on the complete track formed by the two splicing guide rails through the traveling member. Under the guidance of the collar frame, the spray head can cooperate with the spraying member and the rotating sleeve to spray the inner wall of the grooved pipe fitting with plastic.

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