Glue spraying device for seam sealing

Abstract

The present invention belongs to the field of glue coating, and specifically discloses a glue spraying device for joint sealing, including a target pipe, a glue delivery component, a coaxial sliding mechanism, an adaptive feeding adjustment mechanism and a circular shaft coating mechanism. The present invention can keep the long delivery pipe and the short delivery pipe at the center position of the target pipe when facing target pipes with different inner diameters through the coaxial sliding mechanism, and can change the telescopic range of the telescopic adjustment pipe in the short delivery pipe accordingly when the sliding block telescopes and slides, so as to adaptively adjust the blade pitch of the elastic spiral auger; and then when the inner diameter of the target pipe changes, the technical effect of adaptively adjusting the glue supply is achieved only through an ingenious mechanical structure without any electronic sensing control module.

Description

Technical Field

[0001] The invention belongs to the technical field of glue coating, and specifically refers to a glue spraying device for seam sealing. Background Art

[0002] There are usually joints at the joints of pipes. Although the strength of the joints can be guaranteed to be sufficient through appropriate connection methods, when the pipes are used to transport fluid media, the sealing of the joints must also meet certain requirements. Generally speaking, there are usually some reinforcements on the outside of the joints, which makes it inconvenient to seal. In order to prevent the medium from entering the gap of the joints, the most reasonable way is to apply glue from the inside to connect the inner wall of the pipe into a closed and complete cavity.

[0003] There are two main ways to apply glue: spraying and rolling. Rolling is easier to form a thicker coating and is relatively more suitable for this working condition.

[0004] If the joint is located near the end of the pipe, the operator can apply glue by using hand-held tools. However, when the joint is far away from the end of the pipe, some special tools or equipment are needed to achieve good glue coating.

[0005] The position of the coating head must not only be adapted to the inner diameter of the pipe, but the glue supply rate must also match the movement speed of the coating head. In order to simplify the overall structure and reduce the size of the entire device, a solution that automatically supplies glue through the circular motion of the coating head can be adopted. However, this solution uses the circular motion of the coating head as the driving form. When the inner diameter of the target pipe changes, if the same amount of glue is still used to coat a larger circle, the coating thickness of the glue will inevitably decrease. Similarly, if the inner diameter of the target pipe becomes smaller, the coating thickness of the glue will also increase. This is not conducive to the final effect. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a glue spraying device for joint sealing, which can not only automatically supply glue through the circular motion of the coating nozzle, but also automatically sense the inner diameter of the target pipe and adaptively adjust the glue supply speed; through the coaxial sliding mechanism, when facing target pipes with different inner diameters, the long conveying pipe and the short conveying pipe can be kept in the center position of the target pipe, and through the induction and linkage control of the adaptive feeding adjustment mechanism, when the sliding block is telescopically slid, the telescopic range of the telescopic adjustment pipe in the short conveying pipe can be changed accordingly, thereby adaptively adjusting the blade pitch of the elastic spiral auger; and then when the inner diameter of the target pipe changes, without any electronic sensing control module, the technical effect of adaptively adjusting the glue supply is achieved only through an ingenious mechanical structure.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a glue spraying device for seam sealing, including a target pipe, a glue conveying component, a coaxial sliding mechanism, an adaptive feeding adjustment mechanism and a circular shaft coating mechanism, the interior of the target pipe is provided with an inner seam portion, the glue conveying component is arranged inside the target pipe, the coaxial sliding mechanism is arranged on the glue conveying component, the adaptive feeding adjustment mechanism is arranged on one group of the coaxial sliding mechanisms, and the circular shaft coating mechanism is arranged on the adaptive feeding adjustment mechanism.

[0008] Furthermore, the glue delivery assembly includes a long delivery pipe, a short delivery pipe, a telescopic adjustment pipe, a delivery hose and a coating nozzle, the long delivery pipe and the short delivery pipe are coaxially arranged, the telescopic adjustment pipe rotates in the short delivery pipe, and the delivery hose is arranged between the telescopic adjustment pipe and the coating nozzle.

[0009] By using the telescopic adjustment tube that can slide and retract relative to the short conveying tube, the material supply amount of the telescopic adjustment tube for one rotation can be adjusted, so that the material supply amount matches the inner diameter of the target pipeline.

[0010] Furthermore, the coaxial sliding mechanism includes a sliding guide assembly and a rolling preload support assembly, the sliding guide assembly array is arranged on the glue delivery assembly, and the rolling preload support assembly is arranged on the sliding guide assembly.

[0011] Preferably, the sliding guide assembly includes a fixed clamp, a guide column and a sliding block, the fixed clamp is fixedly connected to the short conveying pipe and the long conveying pipe, the outer wall of the fixed clamp is annularly evenly provided with a clamp boss portion and a clamp slide groove portion, the clamp boss portion and the clamp slide groove portion are alternately distributed, the clamp boss portion is provided with a guide column, the sliding block is clamped and slidably arranged on the guide column, and a fork frame portion is provided at the end of the sliding block.

[0012] By fixing the connection between the clamp and the connecting rod, the long conveying pipe and the short conveying pipe can be fixed in position, so that the long conveying pipe and the short conveying pipe can have a stable coaxial relationship and a constant distance between them under the connection of the manual adjustment sleeve, thereby creating a prerequisite for the adjustment of the manual adjustment sleeve.

[0013] As a further preferred embodiment of the present invention, the rolling preload support assembly includes a preload spring, a support shaft and a support roller, the preload spring is arranged between the clamp boss portion and the sliding block, the support shaft is rotatably arranged in the fork frame portion, the support roller is clamped on the support shaft, and the support roller is in rolling contact with the inner wall of the target pipe.

[0014] The sliding block has a tendency to move away from the fixed clamp under the elastic force of the pre-tightening spring. Therefore, under the joint action of multiple pre-tightening springs, the supporting roller will contact the inner wall of the target pipe and maintain a certain degree of extrusion pressure. Under the action of the extrusion force evenly distributed on all sides, when facing target pipes with different inner diameters, the long conveying pipe and the short conveying pipe can be maintained at the central axis position of the target pipe.

[0015] Since the support roller rolls along the axial direction of the target pipe, when the circular shaft coating mechanism rotates, the support roller has good stability in the radial direction. At this time, it is only necessary to appropriately limit the axial movement of the short conveying pipe to keep the short conveying pipe fixed when the circular shaft coating mechanism moves.

[0016] Furthermore, the adaptive feeding adjustment mechanism includes a connecting rod, an adjustable feeding component, a diameter sensing component and an adjustment control component, the connecting rod is arranged between the sliding guide components, the adjustable feeding component is rotatably connected to the glue delivery component, the diameter sensing component is arranged between two adjacent sliding guide components, and the adjustment control component is slidably arranged in the sliding guide component.

[0017] Through the linkage of the adaptive feeding adjustment mechanism, the pitch and total length of the elastic spiral auger can be automatically changed when the inner diameter of the target pipeline changes, thereby changing the feeding amount when the elastic spiral auger rotates one circle, so that the feeding amount automatically matches the inner diameter of the target pipeline.

[0018] Preferably, the adjustable feeding assembly includes a manual adjustment sleeve, a T-shaped guide rod and an elastic spiral auger, the manual adjustment sleeve is threadedly connected to the long conveying pipe, the manual adjustment sleeve is threadedly connected to the short conveying pipe, one end of the T-shaped guide rod is provided with a hollow disc portion, the hollow disc portion is rotatably arranged in the manual adjustment sleeve, the elastic spiral auger is slidably arranged on the T-shaped guide rod, one end of the elastic spiral auger is fixedly connected to the hollow disc portion, and the other end of the elastic spiral auger is fixedly connected to the telescopic adjustment tube.

[0019] By actively adjusting the manual adjustment sleeve and automatically sliding the telescopic adjustment tube, the total length and pitch of the elastic spiral auger can be changed, thereby changing the feeding amount when the elastic spiral auger rotates one circle. Before use, a basic feeding rate can be calibrated by manual adjustment, and during use, when facing pipes of different specifications or pipes with variable diameters, the glue supply can be automatically and adaptively adjusted.

[0020] The elastic spiral auger has both elasticity and certain strength, so that the elastic spiral auger can evenly change its own pitch when stretched and compressed by a large external force. However, since the supply resistance of the glue is small, the resistance of the glue is not enough to cause the elastic spiral auger to undergo obvious deformation when it rotates.

[0021] As a further preferred embodiment of the present invention, the diameter sensing assembly includes an articulated seat, a connecting seat and a sensing connecting rod, the articulated seat is fixed to the side of the sliding block, the connecting seat is provided with an outer articulated part and an inner articulated part, and the sensing connecting rod is hinged between the articulated seat and the outer articulated part.

[0022] Through the linkage of the sensing connecting rod, the spacing of the sliding block can be sensed by changing the spacing between the connecting seat and the clamp sliding groove part, thereby feeding back the sliding amplitude of the sliding block on the guide column, and then driving the adjustment control component to perform sliding adjustment.

[0023] Preferably, the adjustment control assembly includes an adjustment slide rod, an adjustment oblique rod, a rotating support ring and an adjustment sleeve. The adjustment slide rod is slidably arranged in the clamp slide groove portion, one end of the adjustment slide rod is provided with a slide rod hinge portion, the adjustment oblique rod is hinged between the slide rod hinge portion and the inner hinge portion, the rotating support ring is fixed to the other end of the adjustment slide rod, the adjustment sleeve is fixed to the telescopic adjustment tube, and the adjustment sleeve is rotatably arranged on the rotating support ring.

[0024] The adjusting slide rod slides under the push of the adjusting inclined rod, thereby pushing the telescopic adjusting tube to slide relative to the short conveying tube. Then, when the inner diameter of the target pipeline changes, the technical effect of adaptively changing the supply volume is achieved only through an ingenious mechanical structure without any electronic sensing control module.

[0025] Furthermore, the circular shaft coating mechanism comprises a parallel swing component and a swing control component, the parallel swing component is arranged on the adjustment collar, and the swing control component is arranged on the parallel swing component.

[0026] Preferably, the parallel swing assembly comprises a cantilever bracket, a parallel swing platform, a swing connecting rod and a coating head bracket, the cantilever bracket is fixedly connected to the adjustment ring, the swing connecting rod is hinged between the cantilever bracket and the parallel swing platform, the coating head bracket is arranged on the parallel swing platform, and the coating nozzle is arranged on the coating head bracket.

[0027] Through the linkage of the swing connecting rod, the parallel swing platform can always remain parallel to the adaptive feeding adjustment mechanism, so that when facing a target pipe of different diameters, it can ensure that the driving roller and the coating nozzle have the same positional relationship with the target pipe. Through the action of the electromagnetic reset component and the swing spring, the driving roller can contact and squeeze the inner wall of the target pipe through the elastic force of the swing spring when the power is off; and the driving roller can be temporarily separated from the target pipe by the suction force of the electromagnetic reset component when moving.

[0028] As a further preferred embodiment of the present invention, the swing control assembly includes a drive motor, a drive roller, an electromagnetic reset assembly and a swing spring, the drive motor is arranged on a parallel swing platform, the drive roller is arranged on an output shaft of the drive motor, the drive roller is in rolling contact with the inner wall of the target pipe, the electromagnet part and the armature part of the electromagnetic reset assembly are respectively arranged on two parallel swing links, and the swing spring is arranged between the two parallel swing links.

[0029] The beneficial effects achieved by the present invention using the above structure are as follows:

[0030] (1) By following the rotation of the adjusting ring, the elastic spiral auger can realize the adaptive supply of glue while the circular shaft coating mechanism rotates without any independent driving unit, and the supply rate of glue can be adaptively changed as the speed of the driving motor changes.

[0031] (2) By using a telescopic adjustment tube that can slide and retract relative to the short conveying pipe, the amount of material supplied per rotation of the telescopic adjustment tube can be adjusted, so that the amount of material supplied matches the inner diameter of the target pipeline.

[0032] (3) By fixing the connection between the clamp and the connecting rod, the long conveying pipe and the short conveying pipe can be fixed in position, so that the long conveying pipe and the short conveying pipe can have a stable coaxial relationship and keep a constant distance between them under the connection of the manual adjustment sleeve, thereby creating a prerequisite for the adjustment of the manual adjustment sleeve.

[0033] (4) The sliding block has a tendency to move away from the fixed clamp under the elastic force of the preload spring. Therefore, under the joint action of multiple preload springs, the support roller will contact the inner wall of the target pipe and maintain a certain degree of extrusion pressure. Under the action of the extrusion pressure evenly distributed on all sides, when facing target pipes with different inner diameters, the long conveying pipe and the short conveying pipe can be maintained at the central axis position of the target pipe.

[0034] (5) Since the support roller rolls along the axial direction of the target pipe, when the circular shaft coating mechanism rotates, the support roller has good stability in the radial direction. At this time, it is only necessary to appropriately restrict the axial movement of the short conveying pipe to keep the short conveying pipe fixed when the circular shaft coating mechanism moves.

[0035] (6) Through the linkage of the adaptive feeding adjustment mechanism, the pitch and total length of the elastic spiral auger can be automatically changed when the inner diameter of the target pipeline changes, thereby changing the feeding amount when the elastic spiral auger rotates one circle, so that the feeding amount automatically matches the inner diameter of the target pipeline.

[0036] (7) The total length and pitch of the elastic spiral auger can be changed by active adjustment of the manual adjustment sleeve and automatic sliding adjustment of the telescopic adjustment tube, thereby changing the feeding amount when the elastic spiral auger rotates one circle. A basic feeding rate can be calibrated by manual adjustment before use, and the glue supply can be automatically adjusted adaptively when facing pipes of different specifications or pipes of varying diameters during use.

[0037] (8) The elastic spiral auger has both elasticity and certain strength, which enables the elastic spiral auger to change its pitch evenly when stretched and compressed by a large external force. However, since the supply resistance of the glue is small, the resistance of the glue is not enough to cause obvious deformation of the elastic spiral auger when it rotates.

[0038] (9) Through the linkage of the sensing link, the distance between the connecting seat and the clamp groove portion can be sensed by changing the distance between the connecting seat and the clamp groove portion, thereby feeding back the sliding amplitude of the sliding block on the guide column, and then driving the adjustment control component to perform sliding adjustment.

[0039] (10) Through the linkage of the swing connecting rod, the parallel swing platform can always remain parallel to the adaptive feeding adjustment mechanism, so that when facing a target pipe with a different diameter, it can ensure that the driving roller and the coating nozzle have the same positional relationship with the target pipe. Through the action of the electromagnetic reset component and the swing spring, when the power is off, the elastic force of the swing spring can make the driving roller contact and squeeze the inner wall of the target pipe; when moving, the suction force of the electromagnetic reset component can temporarily separate the driving roller from the target pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A three-dimensional diagram of a glue spraying device for joint sealing proposed by the present invention after hiding a target pipeline;

[0041] Figure 2 This is a front view of a glue spraying device for seam sealing proposed by the present invention;

[0042] Figure 3 This is a left side view of a glue spraying device for seam sealing proposed by the present invention;

[0043] Figure 4 for Figure 2 A cross-sectional view along the cutting line AA;

[0044] Figure 5 for Figure 2 A cross-sectional view along the cutting line BB;

[0045] Figure 6 for Figure 4 A cross-sectional view along the cutting line CC;

[0046] Figure 7 An exploded schematic diagram of a glue spraying device for seam sealing proposed by the present invention;

[0047] Figure 8 for Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0048] Fig. 9 for Figure 6 A partial enlarged view of the middle II;

[0049] Fig.10 for Figure 5 A partial enlarged view of the middle part III;

[0050] Fig.11 for Figure 4 A partial enlarged view of the middle IV;

[0051] Fig.12 for Figure 7 A partial enlarged view of point V in the middle.

[0052] Among them, 1. target pipeline, 2. glue delivery component, 3. coaxial sliding mechanism, 4. adaptive feeding adjustment mechanism, 5. round shaft coating mechanism, 6. inner seam part, 7. long delivery pipe, 8. short delivery pipe, 9. telescopic adjustment pipe, 10. delivery hose, 11. coating nozzle, 12. sliding guide component, 13. rolling preload support component, 14. fixed clamp, 15. guide column, 16. sliding block, 17. preload spring, 18. support shaft, 19. support roller, 20. clamp boss part, 21. clamp slide groove part, 22. fork frame part, 23. connecting rod, 24. adjustable feeding component, 25. diameter sensing component, 2 6. Adjustment control assembly, 27. Manual adjustment sleeve, 28. T-shaped guide rod, 29. Elastic spiral auger, 30. Articulated seat, 31. Connecting seat, 32. Induction connecting rod, 33. Adjustment slide rod, 34. Adjustment diagonal rod, 35. Rotating support ring, 36. Adjustment sleeve, 37. Hollow disc part, 38. External hinge part, 39. Internal hinge part, 40. Slide rod hinge part, 41. Parallel swing assembly, 42. Swing control assembly, 43. Cantilever bracket, 44. Parallel swing platform, 45. Swing connecting rod, 46. Coating head bracket, 47. Driving motor, 48. Driving roller, 49. Electromagnetic reset assembly, 50. Swing spring.

[0053] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0056] like Figure 1 to Figure 12As shown, the present invention proposes a glue spraying device for joint sealing, including a target pipe 1, a glue conveying component 2, a coaxial sliding mechanism 3, an adaptive feeding adjustment mechanism 4 and a circular shaft coating mechanism 5, the interior of the target pipe 1 is provided with an inner seam portion 6, the glue conveying component 2 is arranged inside the target pipe 1, the coaxial sliding mechanism 3 is arranged on the glue conveying component 2, the adaptive feeding adjustment mechanism 4 is arranged on one group of the coaxial sliding mechanisms 3, and the circular shaft coating mechanism 5 is arranged on the adaptive feeding adjustment mechanism 4.

[0057] The glue delivery assembly 2 includes a long delivery pipe 7, a short delivery pipe 8, a telescopic adjustment pipe 9, a delivery hose 10 and a coating nozzle 11. The long delivery pipe 7 and the short delivery pipe 8 are coaxially arranged, the telescopic adjustment pipe 9 rotates in the short delivery pipe 8, and the delivery hose 10 is arranged between the telescopic adjustment pipe 9 and the coating nozzle 11.

[0058] By means of the telescopic adjustment tube 9 which can slide and retract relative to the short conveying tube 8 , the supply amount of the telescopic adjustment tube 9 after one rotation can be adjusted, so that the supply amount matches the inner diameter of the target pipeline 1 .

[0059] The coaxial sliding mechanism 3 includes a sliding guide assembly 12 and a rolling pre-tightening support assembly 13 . The sliding guide assembly 12 is arranged in an array on the glue conveying assembly 2 , and the rolling pre-tightening support assembly 13 is arranged on the sliding guide assembly 12 .

[0060] The sliding guide assembly 12 includes a fixed clamp 14, a guide column 15 and a sliding block 16. The fixed clamp 14 is fixedly connected to the short conveying pipe 8 and the long conveying pipe 7. The outer wall of the fixed clamp 14 is evenly distributed in an annular shape with a clamp boss portion 20 and a clamp slide groove portion 21. The clamp boss portion 20 and the clamp slide groove portion 21 are alternately distributed. The clamp boss portion 20 is provided with a guide column 15. The sliding block 16 is engaged and slidably arranged on the guide column 15. The end of the sliding block 16 is provided with a fork frame portion 22.

[0061] By fixing the connection between the fixing clamp 14 and the connecting rod 23, the position of the long conveying pipe 7 and the short conveying pipe 8 can be fixed, so that the long conveying pipe 7 and the short conveying pipe 8 can have a stable coaxial relationship and keep a constant distance between them under the connection of the manual adjustment sleeve 27, thereby creating a prerequisite for the adjustment of the manual adjustment sleeve 27.

[0062] The rolling preload support assembly 13 includes a preload spring 17, a support shaft 18 and a support roller 19. The preload spring 17 is arranged between the clamp boss portion 20 and the sliding block 16. The support shaft 18 is rotatably arranged in the fork frame portion 22. The support roller 19 is clamped on the support shaft 18, and the support roller 19 is in rolling contact with the inner wall of the target pipe 1.

[0063] The sliding block 16 has a tendency to move away from the fixed clamp 14 under the elastic force of the pre-tightening spring 17. Therefore, under the joint action of multiple pre-tightening springs 17, the supporting roller 19 will contact the inner wall of the target pipe 1 and maintain a certain degree of extrusion pressure. Under the action of the extrusion pressure evenly distributed on all sides, when facing target pipes 1 with different inner diameters, the long conveying pipe 7 and the short conveying pipe 8 can be maintained on the central axis position of the target pipe 1.

[0064] Since the support roller 19 rolls along the axial direction of the target pipe 1, when the circular shaft coating mechanism 5 rotates, the support roller 19 has good stability in the radial direction. At this time, it is only necessary to appropriately restrict the axial movement of the short conveying tube 8 to keep the short conveying tube 8 fixed when the circular shaft coating mechanism 5 moves.

[0065] The adaptive feeding adjustment mechanism 4 includes a connecting rod 23, an adjustable feeding component 24, a diameter sensing component 25 and an adjustment control component 26. The connecting rod 23 is arranged between the sliding guide components 12, the adjustable feeding component 24 is rotatably connected to the glue conveying component 2, the diameter sensing component 25 is arranged between two adjacent sliding guide components 12, and the adjustment control component 26 is slidably arranged in the sliding guide component 12.

[0066] Through the linkage of the adaptive feeding adjustment mechanism 4, when the inner diameter of the target pipeline 1 changes, the pitch and total length of the elastic spiral auger 29 can be automatically changed, thereby changing the feeding amount when the elastic spiral auger 29 rotates one circle, so that the feeding amount automatically matches the inner diameter of the target pipeline 1.

[0067] The adjustable feeding assembly 24 includes a manual adjustment sleeve 27, a T-shaped guide rod 28 and an elastic spiral auger 29. The manual adjustment sleeve 27 is threadedly connected to the long conveying pipe 7, and the manual adjustment sleeve 27 is threadedly connected to the short conveying pipe 8. One end of the T-shaped guide rod 28 is provided with a hollow disc portion 37, and the hollow disc portion 37 is rotatably arranged in the manual adjustment sleeve 27. The elastic spiral auger 29 is slidably arranged on the T-shaped guide rod 28, one end of the elastic spiral auger 29 is fixedly connected to the hollow disc portion 37, and the other end of the elastic spiral auger 29 is fixedly connected to the telescopic adjustment tube 9.

[0068] By actively adjusting the manual adjustment sleeve 27 and automatically sliding the telescopic adjustment tube 9, the total length and pitch of the elastic spiral auger 29 can be changed, thereby changing the feeding amount when the elastic spiral auger 29 rotates one circle. Before use, a basic feeding rate can be calibrated by manual adjustment, and during use, when facing pipes of different specifications or pipes with variable diameters, the glue supply can be automatically and adaptively adjusted.

[0069] The elastic spiral auger 29 has elasticity and certain strength, so that the elastic spiral auger 29 can evenly change its own pitch when stretched and compressed by a large external force. However, since the supply resistance of the glue is small, the resistance of the glue is not enough to cause obvious deformation of the elastic spiral auger 29 when the elastic spiral auger 29 rotates.

[0070] The diameter sensing assembly 25 includes an articulated seat 30 , a connecting seat 31 and a sensing link 32 . The articulated seat 30 is fixed to the side of the sliding block 16 . The connecting seat 31 is provided with an outer articulated portion 38 and an inner articulated portion 39 . The sensing link 32 is hinged between the articulated seat 30 and the outer articulated portion 38 .

[0071] Through the linkage of the sensing link 32, the spacing of the sliding block 16 can be sensed by changing the spacing between the connecting seat 31 and the clamp slide groove portion 21, thereby feeding back the sliding amplitude of the sliding block 16 on the guide column 15, and then driving the adjustment control component 26 to perform sliding adjustment.

[0072] The adjustment control assembly 26 includes an adjustment slide rod 33, an adjustment diagonal rod 34, a rotating support ring 35 and an adjustment sleeve 36. The adjustment slide rod 33 is slidably arranged in the clamp slide groove portion 21. One end of the adjustment slide rod 33 is provided with a slide rod hinge portion 40. The adjustment diagonal rod 34 is hinged between the slide rod hinge portion 40 and the inner hinge portion 39. The rotating support ring 35 is fixedly connected to the other end of the adjustment slide rod 33. The adjustment sleeve 36 is fixedly connected to the telescopic adjustment tube 9. The adjustment sleeve 36 is rotatably arranged on the rotating support ring 35.

[0073] The adjusting slide rod 33 slides under the push of the adjusting inclined rod 34, thereby pushing the telescopic adjusting tube 9 to slide relative to the short conveying tube 8. Then, when the inner diameter of the target pipeline 1 changes, without any electronic sensing control module, the technical effect of adaptively changing the supply volume is achieved only through a clever mechanical structure.

[0074] The circular shaft coating mechanism 5 includes a parallel swing component 41 and a swing control component 42 . The parallel swing component 41 is arranged on the adjustment collar 36 , and the swing control component 42 is arranged on the parallel swing component 41 .

[0075] The parallel swing assembly 41 includes a cantilever bracket 43, a parallel swing platform 44, a swing link 45 and a coating head bracket 46. The cantilever bracket 43 is fixedly connected to the adjustment ring 36. The swing link 45 is hinged between the cantilever bracket 43 and the parallel swing platform 44. The coating head bracket 46 is arranged on the parallel swing platform 44. The coating nozzle 11 is arranged on the coating head bracket 46.

[0076] Through the linkage of the swing link 45, the parallel swing platform 44 can always remain parallel to the adaptive feeding adjustment mechanism 4, so that when facing a target pipe 1 of a different diameter, it can be ensured that the driving roller 48 and the coating nozzle 11 have the same positional relationship with the target pipe 1. Through the action of the electromagnetic reset component 49 and the swing spring 50, when the power is off, the elastic force of the swing spring 50 can make the driving roller 48 contact and squeeze the inner wall of the target pipe 1; and when moving, the driving roller 48 can be temporarily separated from the target pipe 1 by the suction force of the electromagnetic reset component 49.

[0077] The swing control assembly 42 includes a drive motor 47, a drive roller 48, an electromagnetic reset assembly 49 and a swing spring 50. The drive motor 47 is arranged on the parallel swing platform 44, the drive roller 48 is arranged on the output shaft of the drive motor 47, the drive roller 48 is in rolling contact with the inner wall of the target pipeline 1, the electromagnet part and the armature part of the electromagnetic reset assembly 49 are respectively arranged on two parallel swing links 45, and the swing spring 50 is arranged between the two parallel swing links 45.

[0078] When in use, the user first needs to energize the electromagnetic reset assembly 49. After being energized, the electromagnetic reset assembly 49 will shorten the distance between the two swing links 45 on the same side under the action of magnetic attraction. At this time, the parallel swing platform 44 will swing toward a position close to the central axis of the target pipeline 1, so that the driving roller 48 is separated from the inner wall of the target pipeline 1. Then, the long delivery pipe 7 is fixed at the port of the target pipeline 1 by limiting the position, so that the positions of the long delivery pipe 7 and the short delivery pipe 8 can be stabilized.

[0079] Then, the point at which the electromagnetic reset assembly 49 is disconnected and the magnetic attraction is lost, the two swing links 45 on the same side are separated under the elastic force of the swing spring 50, so that the parallel swing platform 44 is offset in a direction away from the central axis of the target pipe 1 until the driving roller 48 contacts and squeezes the inner wall of the target pipe 1.

[0080] Then drive the driving motor 47 to rotate. When the driving motor 47 rotates with the driving roller 48, since the driving roller 48 is in rolling contact with the inner wall of the target pipe 1, the circular shaft coating mechanism 5 will rotate as a whole with the telescopic adjustment tube 9. While rotating, the telescopic adjustment tube 9 will also rotate with the elastic spiral auger 29. Since the flow resistance of the glue is not large, the elastic spiral auger 29 can push the glue in the short conveying tube 8 through the telescopic adjustment tube 9 and the conveying hose 10 to the coating nozzle 11 through its own rotation, and while the coating nozzle 11 makes a circular motion along the inner seam 6, the glue is continuously coated on the inner seam 6 for sealing.

[0081] The actual supply of glue should be related to the linear speed of the coating nozzle 11. That is, when the diameter of the target pipe 1 increases, the supply of glue per rotation of the elastic spiral auger 29 needs to be increased to keep the glue coating thickness relatively stable.

[0082] When the device moves to a part with a larger inner diameter, the sliding block 16 will slide outward along the guide column 15 under the elastic force of the preload spring 17. At this time, under the connection of the sensing link 32, the connecting seat 31 is also expanded outward. At the same time, through the linkage of the adjusting inclined rod 34, the adjusting slide rod 33 will bring the rotating support ring 35 together to push the adjusting collar 36 and the telescopic adjusting tube 9 to slide out from the short conveying tube 8.

[0083] When the telescopic adjustment tube 9 slides out from the short conveying tube 8, the elastic spiral auger 29 is stretched by a stronger external force. At this time, the pitch of the elastic spiral auger 29 increases, which also means that the supply of glue increases with each rotation. This achieves the technical effect of maintaining a stable glue coating amount by improving the glue supply efficiency when the linear speed of the coating nozzle 11 increases.

[0084] When the device moves to a portion with a smaller inner diameter, the sliding block 16 will slide inward along the guide column 15, and the adjusting slide rod 33 will bring the rotating support ring 35 together to push the telescopic adjusting tube 9 to slide toward the short conveying tube 8; at this time, the pitch of the elastic spiral auger 29 is reduced, which also means that the glue supply amount is reduced for each rotation, thereby achieving the technical effect of maintaining a stable glue coating amount by reducing the glue supply efficiency when the linear speed of the coating nozzle 11 is reduced.

[0085] Through the above method, glue with a stable thickness can be applied to joints of different inner diameters of the same pipe to achieve the technical purpose of joint sealing; glue with a stable thickness can also be applied to pipes of multiple different inner diameters and specifications.

[0086] If the basic thickness of the glue coating needs to be changed, the basic position of the hollow disc portion 37 can be changed by manually rotating the manual adjustment sleeve 27, thereby achieving the technical purpose of manually adjusting the basic blade pitch of the elastic spiral auger 29.

[0087] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0088] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A glue spraying device for seam sealing, characterized in that: The invention comprises a target pipeline (1), a glue delivery component (2), a coaxial sliding mechanism (3), an adaptive feeding adjustment mechanism (4) and a circular shaft coating mechanism (5), wherein an inner seam portion (6) is provided inside the target pipeline (1), the glue delivery component (2) is arranged inside the target pipeline (1), the coaxial sliding mechanism (3) is arranged on the glue delivery component (2), the adaptive feeding adjustment mechanism (4) is arranged on one group of the coaxial sliding mechanisms (3), and the circular shaft coating mechanism (5) is arranged on the adaptive feeding adjustment mechanism (4); The coaxial sliding mechanism (3) comprises a sliding guide assembly (12) and a rolling pre-tightening support assembly (13); the sliding guide assembly (12) is arranged in an array on the glue conveying assembly (2); and the rolling pre-tightening support assembly (13) is arranged on the sliding guide assembly (12); The adaptive feeding adjustment mechanism (4) comprises a connecting rod (23), an adjustable feeding assembly (24), a diameter sensing assembly (25) and an adjustment control assembly (26), wherein the connecting rod (23) is arranged between the sliding guide assemblies (12), the adjustable feeding assembly (24) is rotatably connected to the glue conveying assembly (2), the diameter sensing assembly (25) is arranged between two adjacent sliding guide assemblies (12), and the adjustment control assembly (26) is slidably arranged in the sliding guide assembly (12); The adjustable feeding assembly (24) comprises a manual adjustment sleeve (27), a T-shaped guide rod (28) and an elastic spiral auger (29), wherein the manual adjustment sleeve (27) is threadedly connected to the long conveying tube (7), and the manual adjustment sleeve (27) is threadedly connected to the short conveying tube (8), one end of the T-shaped guide rod (28) is provided with a hollow disc portion (37), the hollow disc portion (37) is rotatably arranged in the manual adjustment sleeve (27), the elastic spiral auger (29) is slidably arranged on the T-shaped guide rod (28), one end of the elastic spiral auger (29) is fixedly connected to the hollow disc portion (37), and the other end of the elastic spiral auger (29) is fixedly connected to the telescopic adjustment tube (9); The diameter sensing assembly (25) comprises an articulated seat (30), a connecting seat (31) and a sensing connecting rod (32); the articulated seat (30) is fixedly connected to a side surface of the sliding block (16); the connecting seat (31) is provided with an outer articulated portion (38) and an inner articulated portion (39); and the sensing connecting rod (32) is articulated between the articulated seat (30) and the outer articulated portion (38); The adjustment control assembly (26) comprises an adjustment slide bar (33), an adjustment inclined rod (34), a rotation support ring (35) and an adjustment sleeve (36); the adjustment slide bar (33) is slidably arranged in the clamp slide groove portion (21); one end of the adjustment slide bar (33) is provided with a slide bar hinge portion (40); the adjustment inclined rod (34) is hinged between the slide bar hinge portion (40) and the inner hinge portion (39); the rotation support ring (35) is fixedly connected to the other end of the adjustment slide bar (33); the adjustment sleeve (36) is fixedly connected to the telescopic adjustment tube (9); and the adjustment sleeve (36) is rotatably arranged on the rotation support ring (35).

2. The glue spraying device for seam sealing according to claim 1, characterized in that: The glue delivery assembly (2) comprises a long delivery pipe (7), a short delivery pipe (8), a telescopic adjustment pipe (9), a delivery hose (10) and a coating nozzle (11); the long delivery pipe (7) and the short delivery pipe (8) are coaxially arranged; the telescopic adjustment pipe (9) rotates in the short delivery pipe (8); and the delivery hose (10) is arranged between the telescopic adjustment pipe (9) and the coating nozzle (11).

3. The glue spraying device for seam sealing according to claim 2, characterized in that: The sliding guide assembly (12) comprises a fixed clamp (14), a guide column (15) and a sliding block (16); the fixed clamp (14) is fixedly connected to the short conveying pipe (8) and the long conveying pipe (7); the outer wall of the fixed clamp (14) is evenly distributed with a clamp boss portion (20) and a clamp slide groove portion (21) in an annular shape; the clamp boss portion (20) and the clamp slide groove portion (21) are alternately distributed; the clamp boss portion (20) is provided with a guide column (15); the sliding block (16) is slidably engaged with the guide column (15); and a fork frame portion (22) is provided at the end of the sliding block (16).

4. The glue spraying device for seam sealing according to claim 3, characterized in that: The rolling preload support assembly (13) comprises a preload spring (17), a support shaft (18) and a support roller (19); the preload spring (17) is arranged between a clamp boss portion (20) and a sliding block (16); the support shaft (18) is rotatably arranged in a fork frame portion (22); the support roller (19) is engaged with the support shaft (18); and the support roller (19) is in rolling contact with an inner wall of a target pipe (1).

5. The glue spraying device for seam sealing according to claim 4, characterized in that: The circular shaft coating mechanism (5) comprises a parallel swing component (41) and a swing control component (42); the parallel swing component (41) is arranged on an adjustment collar (36); and the swing control component (42) is arranged on the parallel swing component (41).

6. The glue spraying device for seam sealing according to claim 5, characterized in that: The parallel swing assembly (41) comprises a cantilever bracket (43), a parallel swing platform (44), a swing connecting rod (45) and a coating head bracket (46); the cantilever bracket (43) is fixedly connected to an adjustment ring (36); the swing connecting rod (45) is hinged between the cantilever bracket (43) and the parallel swing platform (44); the coating head bracket (46) is arranged on the parallel swing platform (44); and the coating nozzle (11) is arranged on the coating head bracket (46).

7. The glue spraying device for seam sealing according to claim 6, characterized in that: The swing control assembly (42) comprises a drive motor (47), a drive roller (48), an electromagnetic reset assembly (49) and a swing spring (50); the drive motor (47) is arranged on a parallel swing platform (44); the drive roller (48) is arranged on an output shaft of the drive motor (47); the drive roller (48) is in rolling contact with the inner wall of the target pipe (1); the electromagnet part and the armature part of the electromagnetic reset assembly (49) are respectively arranged on two parallel swing connecting rods (45); and the swing spring (50) is arranged between the two parallel swing connecting rods (45).

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