CN114474745B

CN114474745B - Rotary melting machine

Info

Publication number: CN114474745B
Application number: CN202210227752.6A
Authority: CN
Inventors: 孙华丽; 丁杰; 李辉; 钱杨; 许喜梅; 张航媛
Original assignee: Era Co Ltd
Current assignee: Era Co Ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2024-01-26
Anticipated expiration: 2042-03-08
Also published as: CN114474745A

Abstract

The invention provides a rotary melting machine, and belongs to the technical field of pipeline production equipment. The plastic ball valve solves the problem that the plastic ball valve is difficult to be subjected to spin welding by equipment in the prior art. The rotary melting machine comprises a frame with a working table surface, wherein an upper rotating seat and a driving mechanism capable of driving the upper rotating seat to rotate and vertically move are arranged on the frame, a downloading tool is arranged on the working table surface, the upper rotating seat is located right above the downloading tool, an upper mounting hole capable of being used for placing a socket and enabling the socket to be circumferentially positioned is formed in the bottom surface of the upper rotating seat, a lower mounting hole is formed in the downloading tool, the socket can be positioned in the lower mounting hole in a state that a welding face faces upwards, a side plate which is vertically arranged is connected with the edge of an orifice of the lower mounting hole, the side plate is arc-shaped and can be used for abutting against the peripheral wall of a valve body, and a positioning groove which is vertically arranged is formed in the top edge of the side plate. The invention has the advantages of welding quality and simple and convenient welding operation.

Description

Rotary melting machine

Technical Field

The invention belongs to the technical field of pipeline production equipment, and relates to a rotary melting machine.

Background

The plastic ball valve is a very extensive product used in the drainage field, as shown in fig. 1, in the plastic ball valve, two ends of a valve body are usually required to be connected with sockets respectively, a through hole for a valve rod to pass through is formed in the side wall of the valve body, an annular bulge is formed at the edge of the through hole, two clamping bulges are formed on the end face of the annular bulge, a handle rotates between the two clamping bulges, and the clamping bulges limit the rotation of the handle so as to realize the switching of the opening and closing states of the handle. At present, a plastic ball valve commonly used in the market is generally formed by secondary injection molding, namely, after a ball core, a ball rod, a sealing ring and a socket part are injection molded, the ball core, the ball rod, the sealing ring and the socket part are put into an injection mold to carry out injection molding of a valve body, and after injection molding is finished, a handle is installed to complete production and assembly of a ball valve product.

The rotary melting machine is widely applied to the field of metal and plastic product processing, and softens and melts contact parts by rotating and rubbing parts welded with each other at high temperature and processes the contact parts into a whole by high pressure. The rotary fusion machine (application number: 201210206170.6) comprises a frame and a workbench, wherein a lower clamp is arranged on the workbench, a fixed plate is arranged on the frame, and a screw motor are arranged on the fixed plate; one end of the screw rod is connected with a supporting frame; the supporting frame is connected with a lifting plate; a rotating motor is arranged on the lifting plate; an upper clamp is arranged on the output shaft of the rotating motor. Although the rotary fusion machine can connect two plastic products together, the rotary fusion machine cannot be suitable for welding and assembling plastic ball valves, at present, equipment which is specially used for carrying out rotary fusion welding on the plastic ball valves and guaranteeing better welding quality is still lacking.

Disclosure of Invention

The invention aims at solving the problems in the prior art, and provides a rotary melting machine, which solves the technical problems that: how to realize the spin welding of the plastic ball valve and ensure the welding quality.

The aim of the invention can be achieved by the following technical scheme: the utility model provides a melt machine soon, includes the frame that has table surface, be equipped with the roating seat in the frame and can drive the actuating mechanism of going up roating seat rotation and vertical removal, be equipped with the download utensil on the table surface, go up the roating seat and be located directly over the download utensil, its characterized in that, set up on the bottom surface of going up the roating seat and can supply the bellmouth to place and make bellmouth circumference location's last mounting hole, have down the mounting hole just the bellmouth can be with the state location that the welding face faced up in this mounting hole down on the download utensil, the drill way border of mounting hole is connected with the curb plate of vertical setting down, the curb plate is arc platy and can supply the periphery wall of valve body to support and lean on, set up the constant head tank of vertical setting on the curb plate topside.

The driving mechanism is the prior art. The rotary fusion machine needs to be matched with a supporting component for use during processing, the shape of the supporting component is approximately the same as that of the socket, and the axial thickness of the supporting component is the same as that of the socket after the supporting component is welded on the valve body. In the actual operation process, the bellmouth is firstly placed in the upper mounting hole of the upper rotating seat, so that the welding surface of the bellmouth faces downwards, and the bellmouth can be circumferentially positioned in the upper mounting hole. And placing a supporting part in a lower mounting hole of the downloading tool, then vertically placing the valve body (at the moment, the two ends of the valve body are not welded with the bellmouth) on the supporting part, and simultaneously inserting an annular bulge on the valve body into a positioning groove to finish the fixation of the valve body on the downloading tool. And then, turning on a device switch, pressing down the upper rotating seat with the socket rotating at a high speed, enabling the welding surface of the socket to be in contact with the end surface of the valve body, generating heat by friction, heating and melting the contacted plastic part, stopping rotating the upper rotating seat immediately when the upper rotating seat is pressed down to a certain stroke, continuing to press down for a certain distance after stopping rotating, and cooling for a certain time under the state of maintaining pressure, so as to finish welding one end of the valve body with the socket.

Then, the other end of the valve body and the socket are welded, at the moment, the supporting component can be taken out from the downloading tool, the valve body is turned over by 180 degrees, one end of the valve body welded with the socket is downwards placed into the lower mounting hole, and at the moment, the socket is positioned in the lower mounting hole as the supporting component used in the previous operation step. Subsequently, a socket to be welded is placed in the upper mounting hole of the upper swivel base, and welding between the socket and the valve body is completed in the same operation.

Obviously, this melt machine soon owing to be provided with down the mounting hole on the carrier, and the bellmouth can be with the state location of welding face upwards in this mounting hole down, when carrying out valve body both ends twice welding bellmouth like this, can select to place supporting part or the bellmouth of having accomplished the welding in the mounting hole down, guarantee that the upper end of twice welded process valve body is the same height all the time, avoid the initial height of repeatedly adjusting the upper swivel mount to lead to the operation complicacy, also can avoid the error of repeatedly adjusting to arouse welding precision's reduction simultaneously, and then promote welding quality.

In addition, the setting of curb plate can supply the peripheral wall of valve body to support and lean on, has formed the location to the valve body, and the constant head tank of vertical setting can supply annular protruding to insert, carries out spacingly to the valve body circumference for equipment is in the welding process that melts soon like this, and valve body stability is good, especially in the moment that the upper swivel mount scram, and higher stability can be guaranteed to the valve body to promote welded quality.

In the rotary melting machine, the bottom of the positioning groove is an arc-shaped concave supporting surface, and when the socket is arranged in the lower mounting hole and the end face of the valve body is welded with the socket, the annular protrusion on the valve body is abutted against the supporting surface. The arc concave supporting surface can be matched with the annular bulge, and the annular bulge of the valve body is supported and positioned, so that the valve body has better stability, and the welding quality is improved. In the rotary melting machine, the downloading tool comprises a cylindrical main body part, the lower end of the main body part is connected with the supporting plate, the bottom surface of the supporting plate is attached to the working table surface, and the inner hole of the main body part and the top surface of the supporting plate enclose the lower mounting hole. The supporting plate increases the contact area with the working table surface, thereby improving the stability of the downloading tool.

In the rotary melting machine, the lower mounting hole is a stepped hole with an upward large-caliber end. The lower mounting hole is arranged as a step hole, so that the lower mounting hole is matched with the bellmouth, and the bellmouth has better stability and position accuracy when being placed in the lower mounting hole, thereby ensuring the welding quality.

In the rotary melting machine, the side plate is semicircular, and the inner side wall of the side plate is flush with the inner peripheral wall of the main body. The side plate is semicircular, so that an opening is formed at the side of the side plate to conveniently and rapidly put the valve body or the socket into the downloading tool, and the operation is convenient. The inside wall of curb plate flushes with the inner peripheral wall of main part for the inside wall of curb plate and the inner peripheral wall of main part form the great surface of area, thereby give the better support of valve body, promote the stability of valve body.

In the rotary melting machine, the left side and the right side of the downloading tool are respectively provided with a strip-shaped pressing plate, one end of the pressing plate, which is far away from the downloading tool, is in threaded connection with a supporting piece, the other end of the pressing plate is a pressing end, the lower end of the supporting piece is propped against the working table surface, the pressing ends of the pressing plates are downward pressed against the edge of the supporting plate, a strip-shaped groove is formed in the pressing plate along the length direction of the pressing plate, threaded connection pieces propped against the top surface of the pressing plate are arranged in the strip-shaped groove, threaded connection holes are respectively formed in positions, corresponding to each threaded connection piece, of the working table surface, and the lower ends of the threaded connection pieces are in the corresponding threaded connection holes.

When the support plate is used, the screw-connection piece is screwed down, so that the pressing plates on the left side and the right side respectively press the edges of the support plate, and the stability of the downloading tool can be improved. The effect of bar shape groove makes the position of clamp plate can be adjusted according to the download utensil of different size models, promotes the commonality. The support piece is in threaded connection with the pressing plate, and then the support height of the support piece can be adjusted, so that the pressing plate can horizontally press the supporting plate, and the stability of the downloading tool is guaranteed to be high.

In the rotary fusion machine, the end face of the pressing end of the pressing plate is a concave cambered surface, and the end face of the pressing end of the pressing plate can be abutted against the outer circumferential face of the carrier. The clamping plate is provided with the strip-shaped groove, so that the position of the clamping plate can be adjusted, the end face of the pressing end is matched and attached to the outer peripheral face of the downloading tool after adjustment, the positioning effect of the downloading tool is further improved, and particularly, the downloading tool can ensure higher stability in the instant of sudden stop of the upper rotating seat, so that the welding quality is greatly improved.

In the rotary melting machine, the upper mounting hole is a step hole with a large-caliber end arranged downwards, and a plurality of positioning grooves are formed in the inner peripheral wall of the small-caliber part of the upper mounting hole along the circumferential direction. The upper mounting hole is a step hole, so that the upper mounting hole is matched with the socket, and the socket has better stability and position accuracy when placed in the upper mounting hole, so that the welding quality is improved. The positioning groove arranged circumferentially can be matched with the bulge on the peripheral wall of the socket, so that the socket cannot rotate relative to the upper rotating seat when placed in the upper mounting hole.

Compared with the prior art, the rotary melting machine has the following advantages:

1. the lower mounting hole is formed in the downloading tool, and the socket can be positioned in the lower mounting hole in a state that the welding face is upward, so that when the socket is welded at two ends of the valve body twice, the support part can be selectively placed in the lower mounting hole or the welded socket is completed, the upper end of the valve body is always equal in height in the twice welding process, the operation complexity caused by repeated adjustment of the initial height of the upper rotating seat is avoided, the reduction of welding precision caused by repeated adjustment errors can be avoided, and the welding quality is further improved.

2. Be equipped with the curb plate on the carrier, the setting of curb plate can supply the peripheral wall of valve body to support and lean on, has formed the location to the valve body, and the constant head tank of vertical setting can supply annular protruding to insert, carries out spacingly to the valve body circumference for equipment is in the welding process that melts soon like this, and valve body stability is good, especially in the moment that upper swivel mount scram, and higher stability can be guaranteed to the valve body to promote welded quality.

Drawings

Fig. 1 is an exploded view of a valve body and a socket in a plastic ball valve.

Fig. 2 is a schematic view of the valve body and socket connection in a plastic ball valve.

Fig. 3 is a schematic perspective view of the rotary melter.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a schematic view of the working state of the present rotary fusion machine.

Fig. 6 is a perspective view of the bottom of the upper swivel base.

In the figure, 1, a valve body; 11. an annular protrusion; 2. a socket; 3. a frame; 31. a work table; 4. an upper rotating seat; 41. an upper mounting hole; 411. a positioning groove; 5. a downloading tool; 51. a lower mounting hole; 52. a side plate; 53. a positioning groove; 531. a support surface; 54. a main body portion; 55. a support plate; 6. a pressing plate; 61. a pressing end; 62. a bar-shaped groove; 7. a support; 8. a screw connection; 9. and (5) a bolt.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, in the plastic ball valve, two ends of the valve body 1 are usually required to be connected with the socket 2 respectively, meanwhile, a through hole through which the valve rod passes is formed in the side wall of the valve body 1, an annular bulge 11 is formed at the edge of the through hole, two clamping bulges are formed on the end face of the annular bulge 11, the handle rotates between the two clamping bulges, and the clamping bulges limit the rotation of the handle so as to realize the switching of the opening and closing states of the handle. The rotary fusion machine is mainly used for realizing that the two ends of the valve body 1 are respectively welded with the bellmouth 2 when the plastic ball valve is manufactured.

As shown in fig. 3 and 4, the rotary fusion machine comprises a frame 3 with a working table surface 31, wherein an upper rotary seat 4 and a driving mechanism capable of driving the upper rotary seat 4 to rotate and vertically move are arranged on the frame 3. The drive mechanism is prior art and is therefore not shown in the figures. In general, the upper rotating seat 4 can be driven to rotate by a motor, and meanwhile, the upper rotating seat 4 is driven to move up and down by a screw mechanism. The workbench surface 31 is provided with a downloading tool 5, the upper rotating seat 4 is positioned right above the downloading tool 5, the bottom surface of the upper rotating seat 4 is provided with an upper mounting hole 41 which can be used for placing the bellmouth 2 and positioning the bellmouth 2 circumferentially, the downloading tool 5 is provided with a lower mounting hole 51, the bellmouth 2 can be positioned in the lower mounting hole 51 in a state that the welding surface faces upwards, the orifice edge of the lower mounting hole 51 is connected with a side plate 52 which is vertically arranged, the side plate 52 is arc-shaped and can be used for abutting against the peripheral wall of the valve body 1, and the top edge of the side plate 52 is provided with a positioning groove 53 which is vertically arranged.

As shown in fig. 4 and 5, the carrier 5 includes a cylindrical main body 54, a support plate 55 is connected to the lower end of the main body 54, the bottom surface of the support plate 55 is abutted against the table surface 31, the inner hole of the main body 54 and the top surface of the support plate 55 enclose the lower mounting hole 51, and the lower mounting hole 51 is a stepped hole with a large diameter end facing upward. The side plate 52 has a semicircular arc shape, and the inner side wall of the side plate 52 is flush with the inner peripheral wall of the main body 54.

As shown in fig. 4, the left and right sides of the downloading device 5 are respectively provided with a strip-shaped pressing plate 6, one end of the pressing plate 6 far away from the downloading device 5 is in threaded connection with a supporting piece 7, the other end of the pressing plate 6 is a pressing end 61, the lower end of the supporting piece 7 abuts against the worktable surface 31, the pressing ends 61 of the pressing plate 6 press the edge of the supporting plate 55 downwards, a strip-shaped groove 62 is formed in the pressing plate 6 along the length direction, a threaded connection piece 8 abutting against the top surface of the pressing plate 6 is arranged in the strip-shaped groove 62, a threaded connection hole is respectively arranged at the position, corresponding to each threaded connection piece 8, of the worktable surface 31, and the lower end of the threaded connection piece 8 is in the corresponding threaded connection hole. The end face of the pressing end 61 of the pressing plate 6 is a concave arc face, and the end face of the pressing end 61 of the pressing plate 6 can abut against the outer peripheral face of the carrier 5. When in use, the stability of the downloading tool 5 can be improved by tightening the screw-on parts 8 to enable the pressing plates 6 on the left and right sides to respectively press the edges of the supporting plate 55. The position of the pressing plate 6 can be adjusted according to the downloading tools 5 with different sizes and models under the action of the strip-shaped groove 62, so that the universality is improved. The supporting piece 7 is in threaded connection with the pressing plate 6, and then the supporting height of the supporting piece 7 can be adjusted, so that the pressing plate 6 can horizontally press the supporting plate 55, and the stability of the downloading device 5 is guaranteed to be high.

As shown in fig. 4 and 5, the bottom of the positioning groove 53 is an arc-shaped concave supporting surface 531, and when the socket 2 is placed in the mounting hole 51 and the end surface of the valve body 1 is welded to the socket 2, the annular protrusion 11 on the valve body 1 abuts against the supporting surface 531. The arc concave supporting surface 531 can be matched with the annular bulge 11, supports and positions the annular bulge 11 of the valve body 1, so that the valve body 1 has better stability, and the welding quality is improved.

As shown in fig. 6, the upper mounting hole 41 is a stepped hole with a large diameter end facing downward, and a plurality of positioning grooves 411 are provided circumferentially on the inner peripheral wall of the small diameter portion of the upper mounting hole 41. The upper mounting hole 41 is a step hole, so that the upper mounting hole 41 is matched with the socket 2, and the socket 2 has better stability and position accuracy when being placed in the upper mounting hole 41, so that the welding quality is improved. As shown in fig. 1 and 6, the positioning groove 411 provided circumferentially can be fitted with a projection on the outer peripheral wall of the mouthpiece 2 so that the mouthpiece 2 does not rotate relative to the upper rotary seat 4 when placed in the upper mounting hole 41. For the stationary placement of the socket 2, as shown in fig. 5, two bolts 9 are screwed to the upper swivel base 4, which abut against the outer peripheral surface of the socket 2. Specifically, during processing, the socket 2 is placed in the upper mounting hole 41 of the upper rotary seat 4, the welding surface of the socket 2 is downward, and the bolt 9 is tightened, so that the socket 2 can be positioned in the upper mounting hole 41. The support member is placed in the lower mounting hole 51 of the downloading tool 5, then the valve body 1 (at this time, the two ends of the valve body 1 are not welded with the socket 2) is vertically placed on the support member, the annular protrusion 11 on the valve body 1 is inserted into the positioning groove 53, and the fixation of the valve body 1 on the downloading tool 5 is completed. Then, the equipment switch is turned on, the upper rotary seat 4 is pressed down while rotating at a high speed along with the socket 2, the welding surface of the socket 2 is in contact with the end surface of the valve body 1, friction is generated, the temperature of the contacted plastic part rises and melts, when the upper rotary seat 4 is pressed down to a certain stroke, the upper rotary seat is stopped rotating immediately, the upper rotary seat is continuously pressed down for a certain distance after stopping rotating, cooling is carried out for a certain time in a state of maintaining pressure, and the welding of one end of the valve body 1 and the socket 2 is completed.

Then, the other end of the valve body 1 is welded to the socket 2, and at this time, the socket 2 in the lower mounting hole 51 of the carrier 5 can be taken out, the valve body 1 is turned over 180 degrees, and the end of the valve body 1 welded with the socket 2 is placed downward into the lower mounting hole 51, as shown in fig. 5. Subsequently, the socket 2 to be welded is put into the upper mounting hole 41 of the upper swivel seat 4, and the welding between the socket 2 and the valve body 1 is completed in the same operation.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, valve body is used more herein; 11. an annular protrusion; 2. a socket; 3. a frame; 4. an upper rotating seat; 41. an upper mounting hole; 411. a positioning groove; 5. a downloading tool; 51. a lower mounting hole; 52. a side plate; 53. a positioning groove; 531. a support surface; 54. a main body portion; 55. a support plate; 6. a pressing plate; 61. a pressing end; 62. a bar-shaped groove; 7. a support; 8. screw-on etc. terms, but the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.

Claims

1. The utility model provides a melt machine soon, includes frame (3) that has table surface (31), be equipped with on frame (3) roating seat (4) and can drive the actuating mechanism of going up roating seat (4) rotation and vertical removal, be equipped with on table surface (31) and download carrier (5), go up roating seat (4) and lie in directly over download carrier (5), characterized in that, offer on the bottom surface of going up roating seat (4) and can supply bellmouth (2) to place and make bellmouth (2) circumferential location's last mounting hole (41), have down mounting hole (51) and bellmouth (2) can be in this lower mounting hole (51) with the state that the welding faces upwards, the drill way border of lower mounting hole (51) is connected with curb plate (52) of vertical setting, curb plate (52) are arc platy and can supply the periphery wall of valve body (1) to support, set up positioning groove (53) of vertical setting are offered on curb plate (52) topside; the bottom of the positioning groove (53) is an arc-shaped concave supporting surface (531), a socket (2) is arranged in the lower mounting hole (51), and when the end face of the valve body (1) is welded with the socket (2), an annular bulge (11) on the valve body (1) is abutted against the supporting surface (531); the downloading tool (5) comprises a cylindrical main body part (54), the lower end of the main body part (54) is connected with a supporting plate (55), the bottom surface of the supporting plate (55) is abutted against the workbench surface (31), and an inner hole of the main body part (54) and the top surface of the supporting plate (55) are enclosed to form the lower mounting hole (51); the left and right sides of download utensil (5) are equipped with clamp plate (6) that are the bar respectively, the one end spiro union that clamp plate (6) kept away from download utensil (5) has support piece (7), the other end of clamp plate (6) is exerted pressure end (61), the lower extreme of support piece (7) supports and leans on table surface (31), the edge of backup pad (55) is all pushed down to the pressure end (61) of clamp plate (6), bar groove (62) have been seted up along its length direction on clamp plate (6), be equipped with in bar groove (62) and support spiro union spare (8) that lean on clamp plate (6) top surface, the position corresponding with every spiro union spare (8) on table surface (31) is equipped with the spiro union hole respectively, the lower extreme threaded connection of spiro union spare (8) is in the spiro union hole that corresponds.

2. The rotary melter as set forth in claim 1, wherein the lower mounting hole (51) is a stepped hole with a large caliber end facing upward.

3. The rotary melter of claim 1 or 2, wherein the side plates (52) are semi-arc-shaped, and an inner side wall of the side plates (52) is flush with an inner peripheral wall of the main body portion (54).

4. The rotary fusion machine according to claim 1 or 2, wherein the end face of the pressing end (61) of the pressing plate (6) is a concave arc face, and the end face of the pressing end (61) of the pressing plate (6) can abut against the outer peripheral face of the carrier (5).

5. The rotary fusion machine according to claim 1 or 2, wherein the upper mounting hole (41) is a stepped hole with a large caliber end arranged downwards, and a plurality of positioning grooves (411) are circumferentially arranged on the inner peripheral wall of the small caliber part of the upper mounting hole (41).