CN108501392B

CN108501392B - Full-automatic ball valve thermal fusion welding machine

Info

Publication number: CN108501392B
Application number: CN201810257913.XA
Authority: CN
Inventors: 王振超; 徐璐; 陶红
Original assignee: Wuxi Shengda Plastic Pipe Welding Equipment Co ltd
Current assignee: Wuxi Shengda Plastic Pipe Welding Equipment Co ltd
Priority date: 2018-03-27
Filing date: 2018-03-27
Publication date: 2023-09-22
Anticipated expiration: 2038-03-27
Also published as: CN108501392A

Abstract

The invention provides a full-automatic ball valve thermal fusion welding machine, which comprises a frame, a valve body clamp, a branch pipe clamp, a milling cutter device, a hot plate device and a controller for controlling the milling cutter device and the hot plate device, wherein the valve body clamp, the branch pipe clamp, the milling cutter device and the hot plate device are fixed at the top of the frame; the two branch pipe clamps are respectively arranged at two ends of the valve body clamp in a sliding manner; the sliding of the branch pipe clamp is driven by a first sliding driving device; the milling cutter device comprises a hinged milling cutter base and a milling cutter assembly, and a first rotation driving device is arranged between the milling cutter assembly and the milling cutter base; the milling cutter devices are arranged in a sliding mode, and the second sliding driving device drives the milling cutter devices to slide; the hot plate device comprises a hinged hot plate assembly and a hot plate base, and a second rotation driving device is arranged between the hot plate assembly and the hot plate base; the hot plate device is positioned between the two milling cutter devices, the hot plate base is in sliding connection with the top of the frame, and the third sliding driving device drives the hot plate device to slide. The invention adopts the automatic control welding PE ball valve, thereby ensuring the consistency of welding quality.

Description

Full-automatic ball valve thermal fusion welding machine

Technical Field

The invention relates to the technical field of thermal fusion welding machines, in particular to a full-automatic ball valve thermal fusion welding machine suitable for PE ball valve bodies and PE branch pipe fittings.

Background

Polyethylene (PE) is one of the most widely used plastics since the invention of petrochemical products by humans, and has been paid attention to gradually since the 80 th 20 th century because of the advantages of good physical properties, corrosion resistance, long service life, low price, convenient installation and maintenance, etc., and along with the continuous research and development of PE materials, PE materials suitable for pipeline transportation of fuel gas such as PE80 and PE100 are appeared.

Along with the great use of PE pipelines in various gas conveying pipe networks, as the same service life and performance, a Polyethylene (PE) ball valve which is simple to weld, good in sealing performance and convenient to use is used and paid more attention to as an indispensable pipeline control element.

The PE gas ball valve plays an important role in the stability, safety and service life of pipe network gas supply, and compared with the traditional metal ball valve, the PE gas ball valve has the specificity in the aspects of structure, connection method and operation and use, and is mainly characterized in the following aspects:

(1) No leakage. The joint of the PE valve body and the end pipe is mainly welded (hot melt connection or electric melt connection), so that the whole valve shell has high welding and wide connection strength and excellent sealing performance. Compared with rubber ring joints or other mechanical joints, the risk of external leakage caused by joint distortion is avoided; PE ball valve and pipeline direct welding form can not dismantle wholly, and there is not the leak source, does not have the danger of revealing because of the joint distortion causes the outside.

(2) Corrosion resistance. Polyethylene is an inert material and can resist the erosion of various chemical mediums except a few strong oxidants. The soil corrosion resistance is very good, no electrochemical corrosion exists, and no corrosion-resistant layer is needed.

(3) Maintenance and repair free. PE pipe wall is smooth, scaling-free, has ultralow friction resistance, and is an environment-friendly product.

(4) Can be buried directly. A specially designed connecting sleeve and a valve cylinder and well cover structure matched with the connecting sleeve are used; the standard valve can be directly buried without constructing a valve well; the blow-off valve only needs to be built in a shallow well.

(5) The construction is convenient. The shell material of the PE ball valve is PE, so that the PE ball valve is extremely convenient to connect with a PE pipeline system, and can be connected in a hot melting butt joint or an electric melting way; compared with a metal valve, the PE valve has the advantages of light weight, convenience in installation, easiness in opening and closing and small operation moment; the valve is of full-diameter, and the pressure loss is small.

(6) High toughness. Polyethylene is a high-toughness material, the elongation at break of which is generally more than 500%, and the polyethylene is very strong in adaptability to differential settlement of pipes and is also a pipeline with excellent anti-seismic performance.

(7) Long service life. Polyethylene materials can be used for more than 50 years, which is determined by the long-term Hydrostatic Design Base (HDB) of the circumferential tensile strength of polyethylene pipes abroad, and has been confirmed by international standards.

Ball valve thermal fusion welding machine equipment used by manufacturers at present is a hydraulic thermal fusion welding machine: the welding pressure is hydraulic control, the hot plate and the milling cutter are both manually operated, the welding process is complex, and the time consumption is long. The time and pressure parameters in the welding process are manually controlled, the human factors are large, the welding quality cannot be completely consistent, and the welding parameters of the welded junction cannot be recorded and traced.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a full-automatic ball valve thermal fusion welding machine, wherein the hot plate device and the milling cutter device work under automatic control, so that the operation of workers is convenient, the consistency of welding quality is ensured, and the PE ball valve is convenient to use in workshop welding.

The technical scheme of the invention is as follows: a full-automatic ball valve thermal fusion welding machine comprises a frame, a valve body clamp, a branch pipe clamp, a milling cutter device, a hot plate device and a controller;

the top of the frame is horizontal, the valve body clamp is fixedly arranged in the center of the top of the frame, the two branch pipe clamps are coaxially arranged with the valve body clamp, and the valve body clamp is positioned between the two branch pipe clamps;

the two branch pipe clamps are respectively arranged at the top of the frame in an axial sliding manner, and a first sliding driving device for driving the branch pipe clamps to slide is also arranged at the top of the frame;

The milling cutter device comprises a milling cutter base and a milling cutter assembly, wherein the milling cutter assembly is hinged with the milling cutter base, and a first rotation driving device for driving the milling cutter assembly to rotate and switch between a working position and a standby position is arranged between the milling cutter assembly and the milling cutter base;

the milling cutter devices are sequentially arranged along the axial direction of the valve body clamp, milling cutter bases of the two milling cutter devices are respectively connected with one side of the top of the frame in a sliding manner along the axial direction of the valve body clamp, and a second sliding driving device for driving the milling cutter devices to slide is further arranged on the top of the frame;

the hot plate device comprises a hot plate assembly and a hot plate base, the hot plate assembly is hinged with the hot plate base, and a second rotation driving device for driving the hot plate assembly to rotate and switch between a working position and a standby position is arranged between the hot plate assembly and the hot plate base;

the hot plate device is positioned between the two milling cutter devices, a hot plate base of the hot plate device is in sliding connection with one side of the top of the frame along the axial direction of the valve body clamp, and a third sliding driving device for driving the hot plate device to slide is further arranged at the top of the frame;

The controller is used for controlling the work of the milling cutter device, the hot plate device, the first sliding driving device, the second sliding driving device, the third sliding driving device, the first rotating driving device and the second rotating driving device.

As preferable: the controller is a PLC controller, and the PLC controller is provided with a memory for recording working parameters of the milling cutter device, the hot plate device, the first sliding driving device, the second sliding driving device, the third sliding driving device, the first rotating driving device and the second rotating driving device.

As preferable: the control desk is in signal connection with the PLC controller, and is provided with an operation panel and a display screen.

As preferable: the operation panel and the display screen are integrated into a whole, and the printer is also integrated in the console.

As preferable: each branch pipe clamp is correspondingly provided with two first sliding driving devices.

As preferable: the valve body clamp comprises a valve body clamp seat assembly and a valve body clamp cover assembly which are matched with each other and used for clamping a valve body, the valve body clamp seat assembly is fixedly connected with the top of the frame, one end of the valve body clamp cover assembly is hinged with one end of the valve body clamp seat assembly, and the other end of the valve body clamp cover assembly is detachably connected with the other end of the valve body clamp seat assembly through a connecting piece;

The valve body clamp seat assembly is provided with a third rotation driving device for driving the valve body clamp cover assembly to rotate and switch between the opening position and the closing position of the valve body clamp;

the branch pipe clamp comprises a branch pipe clamp base and a branch pipe clamp assembly, the branch pipe clamp base is in sliding connection with the top of the frame, the branch pipe clamp assembly comprises a branch pipe clamp seat assembly and a branch pipe clamp cover assembly which are matched with each other and used for clamping a branch pipe, one end of the branch pipe clamp cover assembly is hinged with one end of the branch pipe clamp seat assembly, and the other end of the branch pipe clamp cover assembly is detachably connected with the other end of the branch pipe clamp seat assembly through a connecting piece;

and a fourth rotation driving device for driving the branch pipe clamp cover assembly to rotate and switch between the opening position and the closing position of the branch pipe clamp is arranged on the branch pipe clamp seat assembly.

As preferable: the milling cutter bases of the two milling cutter devices and the hot plate base of the hot plate device are both positioned on the same side of the top of the frame;

a limiting shaft assembly is arranged between the two branch pipe clamps and the valve body clamp respectively, and the limiting shaft assembly is positioned at one side of the branch pipe clamp and the valve body clamp far away from the milling cutter base and the hot plate base;

Each limiting shaft assembly comprises a limiting shaft rod, a falling-off preventing shaft rod, a limiting shaft seat and a falling-off preventing block, wherein the limiting shaft rods are parallel to the axial direction of the valve body clamp and are positioned above the falling-off preventing shaft rods, the limiting shaft seats are fixedly arranged on the branch pipe clamp bases, the limiting shaft rods penetrate through the limiting shaft seats and are in sliding fit with the limiting shaft seats, one ends of the limiting shaft rods are fixedly arranged on the valve body clamp base assemblies, the falling-off preventing shaft rods penetrate through the limiting shaft seats and are in sliding fit with the limiting shaft seats, two ends of the falling-off preventing shaft rods are respectively positioned at two ends of the falling-off preventing shaft rods, one ends, close to the valve body clamp base assemblies, of the falling-off preventing shaft rods are fixedly connected with the falling-off preventing blocks, and the other ends of the falling-off preventing shaft rods are provided with falling-off preventing washers, and through holes which are in sliding fit with the limiting shaft rods are arranged on the falling-off preventing blocks.

The milling cutter assembly comprises a milling cutter support used for installing a milling cutter, one end of the milling cutter support is hinged with a milling cutter base, and the other end of the milling cutter support is provided with a milling cutter positioning clamping sleeve used for being matched with the limiting shaft rod when the milling cutter assembly rotates to a working position;

The hot plate assembly comprises an electric heating plate and a hot plate support, one side of the hot plate support is hinged with the hot plate base, one side of the electric heating plate is fixedly connected with the other side of the hot plate support, and a hot plate positioning clamping groove which is used for matching the hot plate assembly to a working position and the limiting shaft rod is formed in the other side of the electric heating plate.

As preferable: a stop rod is arranged between the valve body clamp and the milling cutter base at the top of the frame, two stop rods are arranged along the axial direction of the valve body clamp, a channel for the stop rods to vertically slide is formed at the top of the frame, and two fourth sliding driving devices for respectively driving the two stop rods to switch between a position extending out of the top of the frame and a position retracting back to the lower part of the top of the frame are arranged below the top of the frame;

two milling cutter bases face one side of valve body anchor clamps and branch pipe anchor clamps is provided with spacing seat respectively, and two backstop poles when stretching out the position at the top of frame can cooperate the slip of restriction two milling cutter devices with the spacing seat on two milling cutter bases respectively.

As preferable: the first sliding driving device, the second sliding driving device, the third sliding driving device, the fourth sliding driving device, the first rotating driving device, the second rotating driving device, the third rotating driving device and the fourth rotating driving device are oil cylinders or air cylinders.

As preferable: the frame is also provided with a cross switch for manually controlling the milling cutter device, the hot plate device, the first sliding driving device, the second sliding driving device, the third sliding driving device, the fourth sliding driving device, the first rotating driving device, the second rotating driving device, the third rotating driving device and the fourth rotating driving device.

The beneficial effects of the invention are as follows: the invention has compact structure, the work of the hot plate device and the milling cutter device and the sliding process of the hot plate device and the milling cutter device are automatically controlled by the controller, thereby being convenient for workers to operate, ensuring the consistency of welding quality and being convenient for the use of PE ball valves welded in workshops.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a mesa portion of an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the valve body clamp and manifold clamp of the embodiment of the present invention mounted on a table top;

FIG. 4 is a schematic view of another angle of mounting of the valve body clamp and manifold clamp to a table in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of the structure of the milling cutter assembly and the hot plate assembly of the embodiment of the present invention mounted on a table;

FIG. 6 is a schematic view of another angle at which the milling cutter assembly and the hot plate assembly of an embodiment of the present invention are mounted on a table;

fig. 7 is a side view of a milling cutter device and a hot plate device of an embodiment of the present invention mounted on a table.

100, a rack; 110. a table top; 111. a first slide rail; 112. a second slide rail; 113. a channel; 120. a stop lever; 130. a mini cylinder; 140. a cross switch; 200. a valve body clamp; 210. a valve body clamp seat assembly; 211. a valve body clamp seat; 212. a second valve body clamp connection block; 220. a valve body clamp cap assembly; 221. a valve body clamp cover; 222. a first valve body clamp connection block; 230. a third rotary cylinder; 300. a branch pipe clamp; 310. a branch pipe clamp base; 3210. a branch pipe clamp seat assembly; 3211. a branch pipe clamp seat; 3212. a second branch pipe clamp connection block; 3220. a manifold clamp cap assembly; 3221. a branch pipe clamp cover; 3222. a first branch pipe clamp connection block; 323. a branch pipe arc member; 330. a fourth rotary cylinder; 340. a first sliding cylinder; 341. an oil cylinder support; 400. a milling cutter device; 410. a milling cutter base; 411. a limit seat; 421. a milling cutter holder; 422. milling cutter positioning cutting sleeve; 430. a first rotary cylinder; 440. a single-head cylinder; 441. a milling cutter cylinder support; 500. a hot plate device; 510. a hotplate base; 521. an electric heating plate; 522. a hot plate positioning clamping groove; 530. a second rotary cylinder; 540. a double-headed cylinder; 541. a hot plate cylinder support; 600. a limiting shaft assembly; 610. a limit shaft lever; 620. an anti-falling shaft lever; 621. an anti-drop gasket; 630. a limiting shaft seat; 640. an anti-falling block; 701. a loose joint bolt; 702. a hexagonal nut; 800. a console; 810. a touch screen.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present invention, based on the examples herein.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, an embodiment of the present invention provides a full-automatic ball valve thermal fusion welding machine including a frame 100, a valve body jig 200, a branch pipe jig 300, a milling cutter device 400, a hot plate device 500, and a controller.

The top of the frame 100 is a horizontally disposed table 110, and in this embodiment, as shown in fig. 2 to 6, the table 110 is rectangular. The valve body holder 200 is fixedly provided at a central position of the upper surface of the table top 110, and the axial direction of the valve body holder 200 is parallel to the length direction of the table top 110. The manifold clamp 300 is provided in two coaxial with the valve body clamp 200. The valve body clamp 200 is located between two manifold clamps 300.

As an alternative embodiment, as shown in fig. 2, the valve body clamp 200 includes a valve body clamp seat assembly 210 and a valve body clamp cover assembly 220 that cooperate to clamp the valve body.

As shown in fig. 3 and 4, the valve body holder assembly 210 is composed of two symmetrically disposed valve body holder seats 211. The two valve body clamp bases 211 are provided with a lower arc groove of the valve body, wherein the notch of the lower arc groove faces upwards and the arc center of the lower arc groove is coaxial.

The two valve body clamp bases 211 are connected with the table top 110 through screws, namely, the valve body clamp base assembly 210 is fixedly connected with the table top 110.

The valve body clamp cover assembly 220 is composed of two symmetrically arranged valve body clamp covers 221 connected by a valve body clamp 200 connecting rod. The two valve body clamp covers 221 are provided with upper valve body circular arc grooves with the same radius as the lower valve body circular arc grooves on the two valve body clamp bases 211. The positions of the two valve body clamp covers 221 are in one-to-one correspondence with the positions of the two valve body clamp seats 211.

One end of the valve body clamp cover assembly 220 is hinged with one end of the valve body clamp seat assembly 210, and the other end of the valve body clamp cover assembly 220 is detachably connected with the other end of the valve body clamp seat assembly 210 through a first connecting piece. Specifically, the same ends of the two valve body clamp caps 221 are hinged to the same ends of the two valve body clamp seats 211, respectively. The other ends of the two valve body clamp covers 221 are each provided with a first valve body clamp connection block 222. The other ends of the two valve body clamp bases 211 are provided with second valve body clamp connection blocks 212. U-shaped grooves are formed in both the first valve body clamp connection block 222 and the second valve body clamp connection block 212. The first connecting piece comprises a loose-joint bolt 701 and a hexagonal nut 702, one end of the loose-joint bolt 701 is hinged in a U-shaped groove of the second valve body clamp connecting block 212, and the other end of the loose-joint bolt is screwed with the hexagonal nut 702.

When the valve body is fixed by using the valve body clamp 200, the valve body is horizontally arranged in the lower arc grooves of the valve bodies of the two valve body clamp bases 211, the lower arc grooves of the valve bodies are attached to the lower half parts of the arc outer walls of the valve bodies, the valve body clamp cover assembly 220 is rotated to the position (namely, the closing position of the valve body clamp 200) where the upper arc grooves of the valve bodies of the two valve body clamp covers 221 are concentric with the lower arc grooves of the valve bodies of the two valve body clamp bases 211, the upper arc grooves of the valve bodies are attached to the upper half parts of the arc outer walls of the valve bodies, and after the movable joint bolts are clamped into the U-shaped grooves of the first valve body clamp connecting block 222, the hexagonal nuts 702 are screwed, so that locking and positioning of the valve body in the valve body clamp 200 are formed.

In order to enable the valve body clamp 200 to be adapted for positioning of valve bodies of different sizes, the present invention further includes an in-valve body clamp (not shown) for releasable connection with the valve body clamp 200. Each valve body inner clamp comprises two valve body arc-shaped pieces, each valve body arc-shaped piece is provided with an arc groove and an arc outer wall, the arc grooves are used for being matched with the arc outer walls of the valve bodies with the adaptation sizes, and the arc outer walls are used for being matched with the arc grooves under the valve bodies of the valve body clamp base 211 and the arc grooves on the valve bodies of the valve body clamp covers 221. In use, the two valve body arc members of the valve body inner clamp are respectively connected into the valve body lower arc groove of the valve body clamp seat 211 and the valve body upper arc groove of the valve body clamp cover 221 through screws.

The valve body clamp seat assembly 210 is further provided with a third rotation driving means for driving the valve body clamp cover assembly 220 to rotate to switch between the open and closed positions of the valve body clamp 200. The third rotation driving device is an oil cylinder or an air cylinder. In this embodiment, the third rotation driving device is an oil cylinder, and for convenience of the following description, it is named as a third rotation oil cylinder 230. The cylinder body of the third rotary cylinder 230 is hinged with one of the valve body clamp seats 211, and the piston rod of the third rotary cylinder 230 is hinged with the valve body clamp cover 221 corresponding to the valve body clamp seat 211. The opening and closing operation of the valve body clamp 200 can be achieved by precisely controlling the telescopic stroke of the piston rod of the third rotary cylinder 230 through the controller.

As shown in fig. 3 and 4, two manifold clamps 300 are axially slidably disposed on the table top 110, respectively. The manifold clamp 300 includes a manifold clamp base 310 and a manifold clamp assembly.

The manifold clamp base 310 is slidably coupled to the top of the frame 100. Specifically, two parallel first slide rails 111 are mounted and fixed on the upper surface of the table top 110, and the length direction of the first slide rails 111 is parallel to the axes of the upper and lower circular arc grooves of the valve body clamp 200. A first slider that is slidably engaged with the two first slide rails 111 is fixedly installed on the manifold clamp base 310.

The table top 110 is further provided with a first sliding driving means for driving the manifold clamp 300 to slide. The first sliding driving device is an oil cylinder or an air cylinder. In this embodiment, the first slide driving device is an oil cylinder, and for convenience of the following description, it is named as a first slide oil cylinder 340. The cylinder body of the first sliding cylinder 340 is installed and fixed at the end of the table top 110 in the length direction through the cylinder support 341, and the piston rod of the first sliding cylinder 340 is disposed toward the branch pipe clamp 300 and is connected and fixed with the corresponding branch pipe clamp base 310. The controller is used for precisely controlling the telescopic travel of the piston rod of the first sliding oil cylinder 340, so that the sliding operation of the branch pipe clamp 300 can be realized, the welding pressure of the branch pipe clamp 300 in the ball valve welding process is controlled and recorded, and the consistency of the ball valve welding process is ensured.

To ensure that the valve body is uniformly stressed when being welded, each branch pipe clamp 300 is correspondingly provided with two first sliding cylinders 340. The two first sliding cylinders 340 are symmetrically disposed at both ends of the manifold clamp 300, respectively.

The branch clamp assembly includes a branch clamp seat assembly 3210 and a branch clamp cover assembly 3220 that cooperate to clamp the branch.

The branch pipe clamp seat assembly 3210 is formed by connecting three branch pipe clamp seats 3211 arranged in parallel through a connecting rod of the branch pipe clamp 300. The three branch pipe clamp seats 3211 are respectively provided with a branch pipe lower arc groove with an upward notch and a coaxial arc center. The three branch pipe clamp bases 3211 are all connected and fixed with the branch pipe clamp base 310 through screws. Allowing the manifold clamp block assembly 3210 to slide with the manifold clamp base 310.

The branch pipe clamp cover assembly 3220 is composed of three branch pipe clamp covers 3221 arranged in parallel and connected by the branch pipe clamp 300 connecting rods. The three branch pipe clamp covers 3221 are respectively provided with a branch pipe upper arc groove with the same radius as the branch pipe lower arc groove of the three branch pipe clamp seats 3211. The positions of the three branch pipe clamp covers 3221 are in one-to-one correspondence with the positions of the three branch pipe clamp seats 3211.

One end of the branch pipe clamp cover assembly 3220 is hinged to one end of the branch pipe clamp seat assembly 3210, and the other end of the branch pipe clamp cover assembly 3220 is detachably connected with the other end of the branch pipe clamp seat assembly 3210 through a second connecting piece. Specifically, the same ends of the three branch pipe clamp covers 3221 are respectively hinged to the same ends of the three branch pipe clamp seats 3211. One of the other ends of the branch pipe clamp covers 3221 is provided with a first branch pipe clamp connection block 3222, and the other ends of the other two branch pipe clamp covers 3221 are provided with a first branch pipe clamp connection block 3222 together. Correspondingly, one second branch pipe clamp connecting block 3212 is arranged at the other end of one branch pipe clamp seat 3211, and one second branch pipe clamp connecting block 3212 is arranged at the other end of the other two branch pipe clamp seats 3211. The positions of the two first branch pipe clamp connection blocks 3222 and the two second branch pipe clamp connection blocks 3212 are in one-to-one correspondence.

U-shaped grooves are formed in the first branch pipe clamp connecting block 3222 and the second branch pipe clamp connecting block 3212. The second connecting piece also comprises a loose joint bolt 701 and a hexagonal nut 702, one end of the loose joint bolt 701 is hinged in a U-shaped groove of the second branch pipe clamp connecting block 3212, and the other end is screwed with the hexagonal nut 702.

When the branch pipe is fixed by using the branch pipe clamp 300, a group of branch pipe clamp seats 3211 closest to the valve body clamp 200 and a group of corresponding branch pipe clamp covers 3221 and another two groups of branch pipe clamp seats 3211 and corresponding branch pipe clamp covers 3221 are selected according to the size and the length of the branch pipe, and the position of the group of branch pipe clamp seats is adapted to lock and position the branch pipe.

The branch pipe is horizontally placed in the lower arc groove of the branch pipe clamp seat 3211 with position adaptation, the lower arc groove of the branch pipe is attached to the lower half part of the arc outer wall of the branch pipe, the branch pipe clamp cover assembly 3220 is rotated to the concentric position (namely, the closed position of the branch pipe clamp 300) of the upper arc groove of the branch pipe of the three branch pipe clamp seats 3211 and the lower arc groove of the branch pipe of the three branch pipe clamp seats 3211, the upper arc groove of the branch pipe is attached to the upper half part of the arc outer wall of the branch pipe, and after the rotating joint bolt is clamped into the U-shaped groove of the first branch pipe clamp connecting block 3222, the hexagonal nut 702 is screwed, so that the locking and positioning of the branch pipe in the branch pipe clamp 300 are formed.

In order to enable the manifold clamp 300 to be adapted for positioning of different sized manifolds, the present invention also includes an in-manifold clamp for detachable connection with the manifold clamp 300. Each of the branch pipe inner clamps comprises two branch pipe arc-shaped pieces 323, the two branch pipe arc-shaped pieces 323 are provided with arc grooves and arc outer walls, the arc grooves are used for being matched with the arc outer walls of the branch pipes with the adaptation sizes, and the arc outer walls are used for being matched with the arc grooves under the branch pipes of the branch pipe clamp seat 3211 and the arc grooves on the branch pipes of the branch pipe clamp cover 3221. When in use, the two branch pipe arc-shaped pieces 323 of the branch pipe inner clamp are respectively connected with the branch pipe lower arc-shaped groove of the branch pipe clamp seat 3211 and the branch pipe upper arc-shaped groove of the branch pipe clamp cover 3221 through screws.

A fourth rotation driving means for driving the manifold clamp cap assembly 3220 to rotate to switch between the opened and closed positions of the manifold clamp 300 is provided on the manifold clamp block assembly 3210. The fourth rotation driving device is an oil cylinder or an air cylinder. In this embodiment, the fourth rotation driving device is an oil cylinder, and for convenience of the following description, it is named as a fourth rotation oil cylinder 330. The cylinder body of the fourth rotating cylinder 330 is hinged to one of the branch pipe clamp seats 3211, and the piston rod of the fourth rotating cylinder 330 is hinged to the branch pipe clamp cover 3221 corresponding to the branch pipe clamp seat 3211. The opening and closing operation of the manifold clamp 300 can be achieved by precisely controlling the telescopic stroke of the piston rod of the fourth rotary cylinder 330 by the controller.

As shown in fig. 2, the milling cutter device 400 is provided with two milling cutter devices sequentially arranged in the axial direction of the valve body holder 200.

As shown in fig. 5 and 6, the milling cutter device 400 includes a milling cutter base 410 and a milling cutter assembly. The milling cutter base 410 of both milling cutter devices 400 are located on the same side of the upper surface of the table 110.

The milling cutter bases 410 of the two milling cutter devices 400 are slidably coupled with the table top 110 in the axial direction of the valve body holder 200, respectively. Specifically, two parallel second sliding rails 112 are mounted and fixed on the upper surface of the table top 110, and the second sliding rails 112 are parallel to the first sliding rails 111. A second slider is mounted and fixed on the milling cutter base 410 of both milling cutter devices 400, which is in sliding fit with both second slide rails 112.

A second sliding driving means for driving the milling cutter device 400 to slide is also provided on the table top 110. The two milling cutter devices 400 are each driven by a second sliding drive.

The second sliding driving device is an oil cylinder or an air cylinder. In this embodiment, the second slide driving device is a single-head cylinder 440. The cylinder body of the single-head cylinder 440 is mounted and fixed at the end portion of the table top 110 in the length direction through the milling cutter cylinder support 441, and the piston rod of the single-head cylinder 440 is disposed toward the milling cutter device 400 and is connected and fixed with the corresponding milling cutter base 410. The sliding operation of the milling cutter device 400 can be realized by precisely controlling the telescopic travel of the piston rod of the single-head cylinder 440 through the controller, and the cutting process of the milling cutter device 400 in the milling process can be controlled and recorded, so that the precision of the ball valve cutting process is ensured, and the consistency of products in the subsequent welding process is facilitated.

The milling cutter assembly is hinged to the milling cutter base 410. The milling cutter assembly is of an existing construction and includes a milling cutter holder 421 for mounting a milling cutter. One end of the milling cutter holder 421 is hinged to the milling cutter base 410. The other end of the milling cutter holder 421 is provided with a milling cutter positioning sleeve 422.

A first rotation driving means for driving the rotation of the milling cutter assembly between the working position and the stand-by position is provided between the milling cutter assembly and the milling cutter base 410. The first rotation driving device is an oil cylinder or an air cylinder. In this embodiment, the first rotation driving device is an oil cylinder, and for convenience of the following description, it is named as a first rotation oil cylinder 430. The cylinder body of the first rotating cylinder 430 is hinged to the milling cutter base 410, and the piston rod of the first rotating cylinder 430 is hinged to a portion of the milling cutter holder 421 near the hinge end. The controller precisely controls the telescopic stroke of the piston rod of the first rotating cylinder 430, so that the milling cutter assembly can be controlled to switch between the working position and the standby position, and the milling cutter assembly can be stopped at the working position or the standby position.

As an alternative embodiment, as shown in fig. 3, 5 and 7, the table top 110 is provided with a stop lever 120 between the valve body fixture 200 and the milling cutter base 410. The two stop rods 120 are arranged along the length direction of the second slide rail 112, and the table top 110 is provided with a channel 113 for the stop rods 120 to slide vertically. As shown in fig. 7, two fourth slide driving devices are installed under the table 110. The two fourth slide driving means are for driving the two stopper rods 120 to switch between a position extending out of the upper surface of the table top 110 and a position retracting below the upper surface of the table top 110, respectively.

The fourth sliding driving device is an oil cylinder or an air cylinder. In the present embodiment, the fourth rotation driving device is a mini cylinder 130. The cylinder body of the mini cylinder 130 is fixedly connected with the lower surface of the table top 110, and the piston rod of the mini cylinder 130 faces the upper surface of the table top 110 and is fixedly connected with the stop rod 120.

As shown in fig. 3, 5 and 7, the sides of the two milling cutter bases 410 facing the valve body jigs 200 and the branch pipe jigs 300 are respectively provided with a limit seat 411. The two stop bars 120 can be respectively engaged with the limiting seats 411 on the two milling cutter bases 410 to limit the sliding of the two milling cutter devices 400 when the two stop bars extend out of the upper surface of the table top 110. Through the control of the controller, in the process of working one milling cutter device 400, the other milling cutter device 400 can extend out of the upper surface of the table top 110 through the corresponding stop rod 120 to be matched with the limiting seat 411 on the table top to limit, so that misoperation is avoided.

As shown in fig. 5 and 6, the hot plate apparatus 500 is located between two milling cutter apparatus 400.

Platen assembly 500 includes a platen assembly and a platen base 510. The hotplate base 510 is located on the same side of the upper surface of the table 110 as the milling cutter bases 410 of the two milling cutter devices 400.

The platen base 510 of the platen apparatus 500 is slidably connected to the table top 110 side in the axial direction of the valve body holder 200. Specifically, a second slider that is slidably engaged with the two second slide rails 112 is also mounted and fixed on the hot plate base 510.

A third sliding driving means for driving the hot plate apparatus 500 to slide is further provided on the table 110. The third sliding driving device is an oil cylinder or an air cylinder. In this embodiment, the third slide driving device is a double-headed cylinder 540. The cylinder body of the double-headed cylinder 540 is fixedly connected with the hot plate base 510, and both ends of the piston rod of the double-headed cylinder 540 are respectively mounted and fixed on the table top 110 through two hot plate cylinder supports 541. The controller precisely controls the telescopic travel of the piston rod of the double-head cylinder 540, so that the sliding operation of the hot plate device 500 can be realized, the hot plate device 500 is controlled to precisely reach the hot melting position, after the hot plate device 500 and the branch pipe clamp 300 reach the hot melting working position, the controller precisely controls the heating time of the valve body and the end face to be butted of the branch pipe, and after the preset heating time is reached, the controller controls the double-head cylinder 540 and the first oil cylinder to work, so that the electric heating plate 521 of the hot plate assembly is separated from the valve body and the end face to be butted of the branch pipe clamp 300.

The platen assembly is hinged to a platen base 510. The hot plate assembly is of a conventional structure and includes an electric heating plate 521 and a hot plate holder. One side of the hot plate holder is hinged with the hot plate base 510, and one side of the electric heating plate 521 is fixedly connected with the other side of the hot plate holder. The other side of the electric heating plate 521 is provided with a hot plate positioning clamping groove 522.

A second rotation driving means for driving the hot plate assembly to rotate to switch between the operating position and the standby position is provided between the hot plate assembly and the hot plate base 510. The second rotation driving device is an oil cylinder or an air cylinder. In this embodiment, the second rotation driving device is an oil cylinder, and for convenience of the following description, it is named as a second rotation oil cylinder 530. The cylinder body of the second rotating cylinder 530 is hinged with the hot plate base 510, and the piston rod of the second rotating cylinder 530 is hinged with the part of the hot plate support close to the hinged end. The controller precisely controls the telescopic stroke of the piston rod of the second rotary cylinder 530, so that the operation control for switching the rotation of the hot plate assembly between the operation position and the standby position can be realized, and the hot plate assembly can be stopped at the operation position or the standby position.

As shown in fig. 4 to 7, a limiting shaft assembly 600 is provided between each of the two manifold clamps 300 and the valve body clamp 200, and the limiting shaft assembly 600 is located at a side of the manifold clamp 300 and the valve body clamp 200 away from the milling cutter base 410 and the hot plate base 510.

Each of the spacing axle assemblies 600 includes a spacing axle 610, a drop-off prevention axle 620, a spacing axle seat 630, and a drop-off prevention block 640. Both the limit shaft 610 and the anti-drop shaft 620 are disposed parallel to the axial direction of the valve body fixture 200, and the limit shaft 610 is located above the anti-drop shaft 620.

The limit shaft 610 is configured to mate with the milling cutter positioning sleeve 422 when the milling cutter assembly is rotated to the operating position and with the platen positioning sleeve 522 when the platen assembly is rotated to the operating position.

The spacing axle seat 630 is fixedly mounted on the manifold clamp base 310. The limiting shaft 610 passes through the limiting shaft seat 630 and is in sliding fit with the limiting shaft seat 630, and one end of the limiting shaft 610 is fixedly mounted on the valve body clamp seat assembly 210. The anti-falling shaft lever 620 passes through the limiting shaft seat 630 and is in sliding fit with the limiting shaft seat 630, and two ends of the anti-falling shaft lever 620 are respectively positioned at two ends of the anti-falling shaft lever 620. One end of the anti-drop shaft 620, which is close to the valve body clamp seat assembly 210, is fixedly connected with the anti-drop block 640, and the other end of the anti-drop shaft 620 is provided with an anti-drop gasket 621. The anti-drop block 640 is provided with a through hole in sliding fit with the limit shaft 610.

The controller is used to control the operation of the milling cutter device 400, the hot plate device 500, the first slide driving device, the second slide driving device, the third slide driving device, the fourth slide driving device, the first rotation driving device, the second rotation driving device, the third rotation driving device, and the fourth rotation driving device.

As an alternative embodiment, the controller is a PLC controller having a memory for recording the operating parameters of the milling cutter device 400, the hot plate device 500, the first slide driving device, the second slide driving device, the third slide driving device, the first rotary driving device and the second rotary driving device.

As shown in fig. 1, the full-automatic ball valve hot-melt welding machine provided by the embodiment of the invention further comprises a console 800 in signal connection with the PLC controller, wherein the console 800 is provided with an operation panel and a display screen. The working parameters of the PLC can be set through the operation panel, and after the valve body and the branch pipe are clamped manually, full-automatic milling and hot-melt welding processing can be performed through the PLC.

In this embodiment, the operation panel and the display screen are integrated into a touch screen 810, and a printer is also integrated into the console 800. The parameters of welding of each PE ball valve can be printed out through a printer.

As an alternative embodiment, the frame 100 is further provided with a cross switch 140 for manually controlling the milling cutter device 400, the hot plate device 500, the first sliding driving device, the second sliding driving device, the third sliding driving device, the fourth sliding driving device, the first rotation driving device, the second rotation driving device, the third rotation driving device and the fourth rotation driving device. The cross switch 140 can change automatic control into manual control when needed.

The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered.

Claims

1. A full-automatic ball valve thermal fusion welding machine is characterized in that: comprises a frame (100), a valve body clamp (200), a branch pipe clamp (300), a milling cutter device (400), a hot plate device (500) and a controller;

the top of the frame (100) is horizontal, the valve body clamp (200) is fixedly arranged at the top center of the frame (100), two branch pipe clamps (300) are coaxially arranged with the valve body clamp (200), and the valve body clamp (200) is positioned between the two branch pipe clamps (300);

the two branch pipe clamps (300) are respectively arranged at the top of the frame (100) in an axial sliding manner, and a first sliding driving device for driving the branch pipe clamps (300) to slide is further arranged at the top of the frame (100);

the milling cutter device (400) comprises a milling cutter base (410) and a milling cutter assembly, wherein the milling cutter assembly is hinged with the milling cutter base (410), and a first rotation driving device for driving the milling cutter assembly to rotate and switch between a working position and a standby position is arranged between the milling cutter assembly and the milling cutter base (410);

the two milling cutter devices (400) are sequentially arranged along the axial direction of the valve body clamp (200), milling cutter bases (410) of the two milling cutter devices (400) are respectively connected with one side of the top of the frame (100) in a sliding manner along the axial direction of the valve body clamp (200), and a second sliding driving device for driving the milling cutter devices (400) to slide is further arranged at the top of the frame (100);

The hot plate device (500) comprises a hot plate assembly and a hot plate base (510), wherein the hot plate assembly is hinged with the hot plate base (510), and a second rotation driving device for driving the hot plate assembly to rotate and switch between a working position and a standby position is arranged between the hot plate assembly and the hot plate base (510);

the hot plate device (500) is positioned between the two milling cutter devices (400), a hot plate base (510) of the hot plate device (500) is connected with one side of the top of the frame (100) in a sliding manner along the axial direction of the valve body clamp (200), and a third sliding driving device for driving the hot plate device (500) to slide is further arranged at the top of the frame (100);

the controller is used for controlling the work of the milling cutter device (400), the hot plate device (500), the first sliding driving device, the second sliding driving device, the third sliding driving device, the first rotating driving device and the second rotating driving device;

the valve body clamp (200) comprises a valve body clamp seat assembly (210) and a valve body clamp cover assembly (220) which are matched with each other and used for clamping a valve body, the valve body clamp seat assembly (210) is fixedly connected with the top of the frame (100), one end of the valve body clamp cover assembly (220) is hinged with one end of the valve body clamp seat assembly (210), and the other end of the valve body clamp cover assembly (220) is detachably connected with the other end of the valve body clamp seat assembly (210) through a connecting piece;

The valve body clamp seat assembly (210) is provided with a third rotation driving device for driving the valve body clamp cover assembly (220) to rotate and switch between an opening position and a closing position of the valve body clamp (200);

the branch pipe clamp (300) comprises a branch pipe clamp base (310) and a branch pipe clamp assembly, the branch pipe clamp base (310) is in sliding connection with the top of the frame (100), the branch pipe clamp assembly comprises a branch pipe clamp base assembly (3210) and a branch pipe clamp cover assembly (3220) which are matched with each other and used for clamping a branch pipe, one end of the branch pipe clamp cover assembly (3220) is hinged with one end of the branch pipe clamp base assembly (3210), and the other end of the branch pipe clamp cover assembly (3220) is detachably connected with the other end of the branch pipe clamp base assembly (3210) through a connecting piece;

a fourth rotation driving device for driving the branch pipe clamp cover assembly (3220) to rotate and switch between the opening position and the closing position of the branch pipe clamp (300) is arranged on the branch pipe clamp seat assembly (3210);

the milling cutter bases (410) of the two milling cutter devices (400) and the hot plate bases (510) of the hot plate devices (500) are positioned on the same side of the top of the frame (100);

a limiting shaft assembly (600) is respectively arranged between the two branch pipe clamps (300) and the valve body clamp (200), and the limiting shaft assembly (600) is positioned at one side of the branch pipe clamp (300) and the valve body clamp (200) far away from the milling cutter base (410) and the hot plate base (510);

Each limiting shaft assembly (600) comprises a limiting shaft rod (610), a limiting shaft rod (620), a limiting shaft seat (630) and a limiting block (640), wherein the limiting shaft rod (610) and the limiting shaft rod (620) are both parallel to the axial direction of the valve body clamp (200) and are arranged above the limiting shaft rod (620), the limiting shaft seat (630) is fixedly arranged on the branch pipe clamp base (310), the limiting shaft rod (610) penetrates through the limiting shaft seat (630) and is in sliding fit with the limiting shaft seat (630), one end of the limiting shaft rod (610) is fixedly arranged on the valve body clamp base assembly (210), the limiting shaft rod (620) penetrates through the limiting shaft seat (630) and is in sliding fit with the limiting shaft seat (630), two ends of the limiting shaft rod (620) are respectively arranged at two ends of the limiting shaft rod (620), one end of the limiting shaft rod (620) close to the valve body clamp base assembly (210) is fixedly connected with the limiting block (640), and the other end of the limiting shaft rod (620) is fixedly connected with the limiting shaft rod (640) and is provided with a limiting gasket (610);

the milling cutter assembly comprises a milling cutter support (421) for mounting a milling cutter, one end of the milling cutter support (421) is hinged with a milling cutter base (410), and a milling cutter positioning clamping sleeve (422) which is used for being matched with the limiting shaft lever (610) when the milling cutter assembly rotates to a working position is arranged at the other end of the milling cutter support (421);

The hot plate assembly comprises an electric heating plate (521) and a hot plate support, one side of the hot plate support is hinged with the hot plate base (510), one side of the electric heating plate (521) is fixedly connected with the other side of the hot plate support, and a hot plate positioning clamping groove (522) which is used for being matched with the limiting shaft lever (610) when the hot plate assembly rotates to a working position is formed in the other side of the electric heating plate (521);

the controller is a PLC controller, and the PLC controller is provided with a memory for recording working parameters of the milling cutter device (400), the hot plate device (500), the first sliding driving device, the second sliding driving device, the third sliding driving device, the first rotating driving device and the second rotating driving device;

each branch pipe clamp (300) is correspondingly provided with two first sliding driving devices.

2. The full-automatic ball valve hot melt welder of claim 1, wherein: the control desk also comprises a control desk (800) in signal connection with the PLC controller, wherein the control desk (800) is provided with an operation panel and a display screen.

3. The full-automatic ball valve hot melt welder of claim 2, wherein: the operation panel and the display screen are integrated into a whole, and a printer is further integrated in the console (800).

4. A full-automatic ball valve hot melt welder as in any one of claims 1-3 wherein: a stop rod (120) is arranged between the valve body clamp (200) and the milling cutter base (410) at the top of the frame (100), two stop rods (120) are arranged along the axial direction of the valve body clamp (200), a channel (113) for the stop rods (120) to vertically slide is formed at the top of the frame (100), and two fourth sliding driving devices for respectively driving the two stop rods (120) to switch between a position extending out of the top of the frame (100) and a position retracting into the bottom of the top of the frame (100) are arranged below the top of the frame (100);

one side of the two milling cutter bases (410) facing the valve body clamp (200) and the branch pipe clamp (300) is respectively provided with a limiting seat (411), and when the two stop rods (120) extend out of the top of the frame (100), the two stop rods can be respectively matched with the limiting seats (411) on the two milling cutter bases (410) to limit the sliding of the two milling cutter devices (400).

5. The full-automatic ball valve hot melt welder of claim 4, wherein: the first sliding driving device, the second sliding driving device, the third sliding driving device, the fourth sliding driving device, the first rotating driving device, the second rotating driving device, the third rotating driving device and the fourth rotating driving device are oil cylinders or air cylinders.

6. The full-automatic ball valve hot melt welder of claim 5, wherein: the frame (100) is also provided with a cross switch (140) for manually controlling the milling cutter device (400), the hot plate device (500), the first sliding driving device, the second sliding driving device, the third sliding driving device, the fourth sliding driving device, the first rotation driving device, the second rotation driving device, the third rotation driving device and the fourth rotation driving device.