Pipe fitting screw gland screwing device

Abstract

The utility model discloses a screwing device for a screw gland of a pipe fitting. The problem that time and labor are wasted due to the fact that an existing screw gland is manually screwed in the assembling process is solved. A plurality of pipe fitting grooves matched with the corresponding outer edge contours of pipe fittings are formed in the circumference of the rotary table at equal intervals in a circumferential array mode, the guide supporting rail is fixed to the outside of the circumference of the rotary table and used for supporting the pipe fittings correspondingly clamped in the pipe fitting grooves, and the flow guide assemblies are sequentially arranged along the guide supporting rail and used for correspondingly clamping the pipe fittings into the pipe fitting grooves. The gland placing assembly is used for placing glands on the pipe fittings; the gland screwing assembly is used for screwing the glands in place; the flow guide assembly comprises a flow guide plate which is arranged at the inlet of the pipe fitting and is matched with the opening of the pipe fitting groove; the gland placing assembly comprises a clamping jaw used for clamping a gland. The gland screwing assembly comprises a screwing head used for being clamped outside the gland to rotate, and a pressing air cylinder used for pushing and extruding the pipe fitting to be screwed. The device has the advantages of high mounting efficiency, convenience in operation and the like.

Description

Technical Field

[0001] The present application relates to the technical field of water supply and drainage, and in particular to a device for screwing a screw cap on a pipe fitting. Background Art

[0002] The flexible socket connection is a commonly used pipe connection method, particularly effective in applications requiring adaptation to complex working conditions such as pipe vibration, deformation, or uneven foundation settlement. This method involves inserting a flexible rubber ring or sealing o-ring into the stopper of the pipe socket. Force is then applied to insert the pipe end into the socket, creating a closed pipe system that can accommodate a certain range of displacement and vibration. This connection allows for some deformation of the pipe under external forces without causing leakage or damage to the joint.

[0003] The inventors are aware of a screw-on gland pipe fitting product that secures a rubber ring to the socket end of the pipe fitting via a screw-on gland pre-threaded on the end of the pipe fitting, thereby ensuring a sealing effect when the rubber ring is in use. During pipe installation, the pipe only needs to be directly inserted into the socket end of the pipe fitting, further improving the efficiency of the joint installation between the pipe fitting and the pipe while ensuring connection reliability. However, the screw-on gland at the socket end of the pipe fitting needs to be assembled before shipment. The existing assembly method is to manually screw the screw-on gland to achieve the installation purpose, which is inefficient and requires a lot of manpower.

[0004] The information disclosed in this background technology section is only used to deepen the understanding of the background technology of the present disclosure and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0005] In view of at least one of the above technical problems, the present disclosure provides a device for screwing a pipe gland, aiming to solve the problem that the existing screw glands are manually screwed during assembly, which is time-consuming and labor-intensive.

[0006] According to one aspect of the present disclosure, a pipe threaded capping and screwing device is provided, which includes a turntable with a plurality of pipe grooves in a circumferential array at equal intervals that match the corresponding outer edge contours of the pipe, a guide support rail fixed outside the circumference of the turntable for supporting the pipe correspondingly clamped in the pipe groove, a guide assembly arranged in sequence along the guide support rail for clamping the pipe correspondingly into the pipe groove, a cap placement assembly for placing the cap on the pipe, and a cap screwing assembly for screwing the cap into place; the guide assembly includes a guide plate provided at the pipe inlet and matching the pipe groove opening; the cap placement assembly includes a clamping claw for clamping the cap; the cap screwing assembly includes a screwing head for rotating the cap outside the cap, and a pressing cylinder for pushing the pipe to be screwed, and the guide support rail is provided with a pushing opening corresponding to the pressing cylinder.

[0007] In some embodiments of the present disclosure, the pipe threaded capping and screwing device further includes a cylindrical shell correspondingly surrounding the lower side of the turntable, and the guide support rail is relatively fixed to the cylindrical shell.

[0008] In some embodiments of the present disclosure, the pipe threaded capping and screwing device also includes a disengagement component for disengaging the pipe from the pipe groove after capping. The disengagement component includes a pushing cylinder arranged at the center of the turntable and fixed relative to the guide support rail.

[0009] In some embodiments of the present disclosure, a sliding groove for receiving dropped pipes is fixedly provided at the cylinder shell corresponding to the bottom of the pushing cylinder.

[0010] In some embodiments of the present disclosure, the gland placement assembly further includes a telescopic shaft arranged perpendicular to the ground, and the clamp is relatively fixed at the top end of the telescopic shaft through a crossbeam; and the clamp is correspondingly arranged directly above the pipe slot.

[0011] In some embodiments of the present disclosure, the gripper is a pneumatic gripper.

[0012] In some embodiments of the present disclosure, the gland placement assembly also includes a telescopic shaft arranged perpendicular to the ground, and the screwing head is relatively fixed at the top end of the telescopic shaft through a horizontal arm; and the screwing head is correspondingly arranged directly above the pipe slot.

[0013] In some embodiments of the present disclosure, the inner circumferential array of the screwing head has a plurality of screwing ribs for correspondingly abutting against the ribs on the outer edge of the pressure cover to rotate the pressure cover.

[0014] In some embodiments of the present disclosure, the pressing cylinder is arranged along the perpendicular midline of the pipe slot opening, and the end plate of the pressing cylinder is used to match the side surface that abuts against the pipe with the corresponding outer edge contour of the pipe.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] 1. The assembly line operation of screw-on gland screwing is realized by the rotation of the turntable. The gland placement assembly and the gland screwing assembly are used to place the gland on the pipe port and screw the gland. The whole process is efficient and convenient, which can greatly improve the efficiency of screw-on gland screwing installation.

[0017] 2. The compression cylinder is used to tighten the pipe fittings, which can prevent the pipe fittings from rotating when the screw cap is screwed, resulting in screwing failure or incomplete screwing, thereby ensuring installation quality.

[0018] 3. The guide rails can not only support the pipe fittings but also guide and limit the pipe fittings, thereby ensuring the stability of the pipe fittings during the rotation of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a partial structural diagram of a pipe screw capping device in one embodiment of the present application.

[0020] Figure 2 This is a structural diagram of a screwing head in one embodiment of the present application.

[0021] Figure 3 This is a schematic diagram of the use status of the screw-type gland screwing device in one embodiment of the present application.

[0022] In the above figures, 1 is a turntable, 11 is a pipe groove, 2 is a guide support rail, 21 is a cylinder shell, 3 is a guide assembly, 31 is a guide plate, 4 is a gland placement assembly, 41 is a telescopic shaft, 42 is a crossbeam, 43 is a clamping claw, 5 is a gland screwing assembly, 51 is a telescopic shaft, 52 is a screwing head, 521 is a screwing strip, 53 is a cross arm, 54 is a clamping cylinder, 55 is an end plate, 6 is a pushing cylinder, 7 is a pipe fitting, and 8 is a screw gland. DETAILED DESCRIPTION

[0023] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] The procedures involved or relied upon in the following embodiments are all conventional or simple procedures in the art, and those skilled in the art can make conventional selections or adaptive adjustments based on specific application scenarios. Unless otherwise specified, the components and other parts involved in the following embodiments are all conventional commercially available products.

[0025] In order to better understand the technical solution of the present application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0026] In order to solve the problem that the existing pipe screw gland installation requires manpower to screw and install, which leads to low efficiency and waste of labor resources, this example discloses a pipe screw gland screwing device, see Figure 1 It includes a turntable 1, a guide support rail 2, a diversion component 3, a gland placement component 4, and a gland screwing component 5.

[0027] Considering that the pipe fitting needs to be firmly clamped when the screw cap is installed, and in order to achieve the socketing of the pipe, the inner edge of the pipe fitting is provided with a boss corresponding to the maximum insertion depth of the pipe, which is used to limit the pipe inserted into the pipe fitting. This structure is reflected on the outer edge of the pipe fitting, and an excessive shoulder will be formed at the outer edge. Based on this, the screw cap screwing device of the pipe fitting in this embodiment is provided with a turntable. For details, see Figure 1 There are several pipe grooves 11 in an evenly spaced circular array at the circumferential edge of the turntable 1. The pipe grooves 11 are semicircular and the inner edge contour matches the smaller diameter contour of the pipe shoulder, so that the pipe can be just embedded in the pipe grooves 11, and the shoulder of the pipe can just be stuck to the top surface of the turntable 1. After the pipes are embedded in the pipe grooves 11 one by one, the pipes are driven to move along the circumference of the turntable as the turntable 1 rotates.

[0028] Among them, a rotating shaft is provided at the center position of the turntable 1, which is arranged perpendicular to the turntable and is driven by a servo motor. The servo motor drives the turntable to rotate at equal angles and equal time intervals. Therefore, during the interval of the turntable rotation, a working window period of the working station is formed at the corresponding pipe slot position, and the pressure cover is placed and screwed accordingly.

[0029] In this embodiment, considering that the inner edge profile of the pipe groove 11 is a semicircular arc that matches the corresponding outer edge profile of the pipe, although the pipe can be clamped on the top of the turntable through the shoulder, since the other side of the pipe is not supported by any support, on the one hand, the pipe is at risk of falling off the turntable when the turntable rotates, and on the other hand, the pipe may not fit tightly with the pipe groove 11, thereby affecting the placement and screwing of the screw cover in the subsequent process. For this reason, see Figure 1 A guide rail 2 is fixedly provided on the outer side of the turntable 1. The inner edge of the guide rail 2 is tangent to the outer edge of the pipe embedded in the pipe groove 11, and the top surface of the guide rail 2 is in contact with the shoulder of the pipe. Therefore, on the one hand, the inner edge side of the guide rail 2 is in contact with the pipe, ensuring that the pipe and the inner edge of the pipe groove are closely fitted. On the other hand, the corresponding contact between the top surface of the guide rail 2 and the shoulder of the pipe is achieved to support the shoulder, that is, the pipe.

[0030] In order to fix the guide rail 2, a cylindrical shell 21 is provided under the turntable. The cylindrical shell 21 can serve as a shell to protect the device and provide a mounting position for the guide rail 2 to ensure a stable installation of the guide rail 2. However, in order to facilitate the placement of the pipe into the pipe groove 11 and the removal of the pipe from the pipe groove after the pipe screw cap is screwed, see Figure 1 The shell 21 is provided with an opening at a certain angle, thereby facilitating the installation and removal of the pipe fittings through the opening of the shell.

[0031] To facilitate the placement of pipes into the pipe slots 11, in this embodiment, a guide assembly 3 is provided at the pipe entrance. The guide assembly includes two parallel guide plates 31. The channel formed between the two guide plates 31 is opposite to the pipe slots 11 on the turntable 1. The guide plates 31 thus limit the position of the pipes, facilitating quick and accurate placement of the pipes in the pipe slots 11. In this embodiment, the pipes 11 are manually inserted through the space between the guide plates and placed in the turntable pipe slots 11, so that the outer edge of the pipes aligns with the inner edge of the pipe slots 11, and the pipe shoulders are correspondingly positioned on the top surface of the turntable. Thus, after the turntable rotates, the operator releases the pipes, and the guide rails 2 support and limit the pipes, allowing the pipes to move stably with the rotation of the turntable. In other embodiments, a conveying mechanism is provided between the two guide plates of the guide assembly 2. The pipes are placed on the conveying mechanism via the shoulders and, after being limited by the two guide plates, are sequentially conveyed to the pipe slots and locked.

[0032] See also Figure 1 , a gland placement assembly 4 is provided downstream of the guide assembly along the rotation direction of the turntable 1, which is used to clamp the screw-type gland from the gland conveyor belt and place it correspondingly at the port of the pipe fitting. Among them, the bandwidth of the gland conveyor belt matches the gland diameter, and a baffle perpendicular to the conveying direction of the conveyor belt is provided at the end of the gland conveyor belt. The baffle is fixedly provided and used to limit the gland. The gland is conveyed by the conveyor belt to the baffle and stops moving, waiting to be grabbed by the gland placement assembly 4. Specifically, the gland placement assembly includes a telescopic rotating shaft 41, which is provided perpendicular to the ground and can rotate along the axis while extending and retracting in a direction perpendicular to the ground. Thus, the gland is grabbed and dropped by the extension and retraction of the shaft, and the gland is grabbed from the conveyor belt and placed on the pipe fitting by the rotation of the shaft. A crossbeam 42 is provided at the top of the telescopic end of the telescopic shaft 41, and a clamp 43 is provided at the end of the crossbeam 42 in the vertical direction. The crossbeam 42 extends the working distance of the clamp 43 so that the gland can be grasped from the conveyor belt on the side. In addition, in this embodiment, the clamp 43 is a pneumatic clamp, and the ends of each clamp include a rubber layer to avoid damage to the screw gland. In addition, the center of the clamp is vertically aligned with the center of the pipe groove below it, that is, the clamp is located directly above the pipe groove. Since the pipe groove in this example is a semicircular arc that matches the outer edge contour of the pipe, that is, the center of the clamp is vertically aligned with the center of the pipe end. As a result, after the clamp falls with the telescopic shaft 41 and the jaws are released, the screw gland can be placed on the pipe end.

[0033] See also Figure 1 A gland screwing assembly 5 is provided downstream of the gland placement assembly 4 along the rotation direction of the turntable 1. The gland screwing assembly 5 is used to place the gland placement assembly on the screw gland at the end of the pipe fitting and screw it into place. Figure 1The gland screwing assembly 5 includes a telescopic shaft 51 arranged perpendicular to the ground. The shaft can be telescoped in the vertical direction, thereby realizing the rise and fall of the screwing head 52 and cooperating with the screwing head 52 to screw the screw gland into place. Figure 1 The screwing head 52 is connected to the telescopic shaft 51 through a cross arm 53, wherein a motor is installed in the cross arm 53 to drive the rotation of the screwing head 52, and the center of the screwing head 52 is vertically aligned with the center of the pipe groove below it, that is, the center of the screwing head 52 is vertically aligned with the center of the pipe end at the pipe groove. The screwing head 52 is located directly above the pipe groove, so that when the screwing head 52 is driven by the telescopic shaft 51 and then vertically drops, it can fit into the gland and screw the gland by rotation. In order to achieve the screwing of the gland by the screwing head 52, the screwing head 52 in this example is in the shape of an inverted bucket, and its inner edge diameter matches the maximum diameter of the screw gland. Considering that the outer edge of the screw gland is provided with a number of ridges for easy screwing, see Figure 2 Therefore, a plurality of screw ribs 521 are arranged in a circular array around the inner edge of the screw head 52 where it contacts the outer edge of the side of the screw gland. The bottom sides of the screw ribs 521 are chamfered to facilitate the screw ribs 521 to guide the screw ribs when they interfere with the ridges of the screw gland. This allows the gland to avoid slight positional changes due to the matching internal contour of the screw head 52. Thus, by utilizing the positional interference between the screw ribs 521 and the ridges of the gland, the screw gland can be screwed and installed by rotating the screw head 52.

[0034] However, considering that the pipe will rotate in the pipe groove when the gland is screwed, the screw gland cannot be screwed into place. Figure 1 A clamping cylinder 54 is fixed on the outer edge of the shell at the corresponding screwing position. The clamping cylinder 54 is arranged along the vertical line of the pipe groove just below the screwing head 52. As a result, after the clamping cylinder 54 is extended, the end plate 55 can effectively contact the pipe and apply a reliable clamping force. For this purpose, see Figure 1 , corresponding to the position of the clamping cylinder 54, the guide support rail 2 is provided with a pushing opening to avoid position interference with the movement of the end plate of the clamping cylinder. In addition, in this embodiment, the side profile of the end plate 55 used for contacting the pipe is matched with the outer edge profile of the pipe, thereby effectively increasing the contact area between the end plate 55 and the pipe, thereby ensuring the clamping effect of the clamping cylinder 54. In some other embodiments, the inner edge of the pipe groove 11 and the inner edge of the end surface of the end plate 55 used for contacting the pipe are respectively provided with a rubber layer, which on the one hand can avoid hard contact between the pipe and the inner edge, and on the other hand can increase the contact friction between the pipe and the pipe, ensuring that the pipe does not rotate relative to the inner edge when being clamped by the clamping cylinder 54. In some other embodiments, in order to avoid problems such as tilting and misalignment of the pipe at the pushing opening of the guide support rail 2, in this example, the pushing opening is opened in the middle and lower part of the guide support rail 2, thereby allowing the pipe to be supported at all times.

[0035] See also Figure 1 After the screw gland is screwed into place, the pipe continues to move with the rotation of the turntable 1. After moving to the opening of the shell, it naturally falls due to the loss of support from the guide rail 2, thus completing the installation of the screw gland. For this reason, in some other embodiments, a chute is provided below the pipe slot corresponding to the location where the pipe falls. The chute is inclined and fixed relative to the shell. In addition, in this example, considering that the turntable has a certain support effect on the pipe, the pipe may not fall naturally after losing the support of the guide rail. For this reason, see Figure 1 A disengagement assembly is provided at the center of the turntable, comprising a push cylinder 6, which is fixedly provided via a fixed shaft passing through the turntable and the bottom surface of the cylinder shell. Specifically, the fixed shaft passes through the center of the turntable's rotation axis, thereby achieving relative fixation between the push cylinder 6 and the cylinder shell 21. The push cylinder 6 is arranged along the mid-perpendicular line of the corresponding pipe groove, thereby ensuring that the end plate of the push cylinder 6 can effectively contact the pipe, and the pipe falls after being pushed by the push cylinder 6. In some other embodiments, guide plates are also provided at the corresponding pipe outlets. After being pushed by the push cylinder 6, the pipe enters the conveyor belt between the guide plates, and is then conveyed to other spatial locations along the conveyor belt by being supported on the conveyor belt.

[0036] See also Figure 3 When this device is in use, in this example, manual placement is adopted. The pipe is manually passed through the guide component and placed in the pipe groove corresponding to the guide component, so that the shoulder of the pipe is stuck to the top surface of the turntable. The turntable rotates at equal angles under the drive of the servo motor, and the angle of each rotation matches the number of pipe grooves, so that the positions of the pipe grooves coincide with each other before and after adjacent rotations of the turntable, thereby ensuring the stability of the position of each process station. As the turntable rotates, the pipe fitting is supported by the guide rail and rotates stably along the rail. At the same time, the gland placement assembly and the gland screwing assembly operate simultaneously to place the gland and screw the gland, respectively. The gap between adjacent rotations of the turntable is greater than the maximum working time of the gland placement assembly and the gland screwing assembly, which refers to the time interval required for the corresponding assembly to start working and reset. This ensures that the gland placement assembly and the gland screwing assembly complete the placement and screwing of the screw-on gland within the window period of the turntable rotation interval. At the same time as the gland screwing assembly operates, the pressing cylinder operates to tighten the pipe fitting. In addition, at the same time as the gland placement assembly and the gland screwing assembly operate, the pushing cylinder operates simultaneously to detach the pipe fitting from the pipe groove. Therefore, every time the turntable rotates a set angle, the device can simultaneously complete the installation of a pipe fitting, the placement of a gland, the screwing of a gland, and the detachment of a pipe fitting, making the working process efficient and convenient.

[0037] Although some preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0038] Obviously, those skilled in the art may make changes and modifications to the present application without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present application is intended to include such changes and modifications.

Claims

1. A pipe screw gland screwing device, characterized in that: The utility model comprises a turntable having a plurality of pipe grooves in a circular array at equal intervals on the circumference thereof and matching the outer edge profiles of the corresponding pipes, a guide rail fixed to the outside of the circumference of the turntable for supporting the corresponding pipes clamped in the pipe grooves, a flow guide assembly arranged in sequence along the guide rail for clamping the pipes into the pipe grooves, a gland placing assembly for placing glands on the pipes, and a gland screwing assembly for screwing the glands into place; The flow guide assembly includes a flow guide plate provided at the pipe inlet and matching the pipe slot opening; The gland placement assembly includes a clamping jaw for clamping the gland; The gland screwing assembly includes a screwing head for rotating the card cover outside the gland, and a pressing cylinder for pushing the pipe to be screwed. The guide rail is provided with a pushing opening corresponding to the pressing cylinder.

2. The pipe screw gland screwing device according to claim 1, characterized in that: It also includes a cylinder shell corresponding to the outer side of the lower part of the turntable, and the guide support rail is relatively fixed to the cylinder shell.

3. The pipe screw gland screwing device according to claim 2, characterized in that: It also includes a disengagement component for the pipe fitting to disengage from the pipe fitting groove after capping. The disengagement component includes a pushing cylinder arranged at the center of the turntable and fixedly arranged relative to the guide support rail.

4. The pipe screw gland screwing device according to claim 3, characterized in that: A sliding groove for receiving dropped pipes is fixedly provided at the cylinder shell corresponding to the lower portion of the pushing cylinder.

5. The pipe screw gland screwing device according to claim 1, characterized in that: The gland placement assembly further comprises a telescopic shaft arranged perpendicular to the ground, and the clamping claw is relatively fixedly arranged at the top end of the telescopic shaft via a crossbeam; and the clamping claw is correspondingly arranged directly above the pipe slot.

6. The pipe screw gland screwing device according to claim 1, characterized in that: The clamping jaws are pneumatic clamping jaws.

7. The pipe fitting screw capping device according to claim 1, characterized in that: The gland placement assembly also includes a telescopic shaft arranged perpendicular to the ground, and the screwing head is relatively fixed at the top end of the telescopic shaft through a horizontal arm; and the screwing head is correspondingly arranged directly above the pipe slot.

8. The pipe screw gland screwing device according to claim 7, characterized in that: The inner circumferential array of the screwing head is provided with a plurality of screwing ribs for correspondingly abutting against the convex ribs on the outer edge of the pressure cover to rotate the pressure cover.

9. The pipe fitting screw capping device according to claim 1, characterized in that: The pressing cylinder is arranged along the perpendicular midline of the pipe slot opening, and the end plate of the pressing cylinder is used to match the side surface that abuts against the pipe with the corresponding outer edge contour of the pipe.

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