阅读说明：本技术 一种pvc管生产加工设备、加工工艺 (PVC pipe production and processing equipment and processing technology ) 是由 柳华屹 汪轩锚 于 2021-05-19 设计创作，主要内容包括：本发明涉及PVC管加工技术领域,具体的说是一种PVC管生产加工设备、加工工艺；该加工设备包括混合单元、挤出单元、冷却单元、牵引单元、切割单元和扩口单元；其中切割单元包括切割机,切割机包括支撑底板、一号板和二号板；当电动伸缩杆推动刀片进行下移时,刀片率先接触PVC管,电动伸缩杆的输出轴通过弹性绳拉动二号块对PVC管进行挤压,从而在一定程度上提高了PVC管在进行切割时的稳定性,当二号块接触到PVC管,使弧形橡胶垫与PVC管进行接触,且由于弧形橡胶垫下表面粗糙度高,使弧形橡胶块与PVC管之间的摩擦系数增加,从而使二号块与PVC管之间的摩擦力增加,从而进一步增加了PVC管在切割时的稳定程度。(The invention relates to the technical field of PVC pipe processing, in particular to a PVC pipe production processing device and a processing technology; the processing equipment comprises a mixing unit, an extrusion unit, a cooling unit, a traction unit, a cutting unit and a flaring unit; the cutting unit comprises a cutting machine, and the cutting machine comprises a supporting base plate, a first plate and a second plate; when electric telescopic handle promoted the blade and moved down, the blade was led first and is contacted the PVC pipe, electric telescopic handle's output shaft extrudeed the PVC pipe through No. two pieces of elastic cord pulling, thereby improved the stability of PVC pipe when cutting to a certain extent, contact the PVC pipe when No. two pieces, make arc rubber pad and PVC pipe contact, and because arc rubber pad lower surface roughness is high, make the coefficient of friction between arc rubber piece and the PVC pipe increase, thereby make the frictional force between No. two pieces and the PVC pipe increase, thereby further increased the degree of stability of PVC pipe when the cutting.)

1. A PVC tube production processing device comprises a mixing unit, an extrusion unit, a cooling unit, a traction unit, a cutting unit and a flaring unit; the PVC pipe production line comprises a mixing unit, an extruding unit, a cooling unit, a drawing unit, a cutting unit and a flaring unit, wherein the mixing unit is used for mixing raw material slurry of a PVC pipe, the extruding unit is used for extruding the mixed raw material of the PVC pipe through an extruder, the cooling unit is used for cooling and solidifying the extruded PVC pipe, the drawing unit is used for drawing the cooled PVC pipe out through a drawing machine, the cutting unit is used for cutting off the PVC pipe, and the flaring unit is used for flaring the cut PVC pipe; the method is characterized in that: the cutting unit comprises a cutting machine, the cutting machine comprises a supporting base plate (1), a first plate (11) and a second plate (12), and one end of the first plate (11) is fixedly connected to the right side of the upper end face of the supporting base plate (1); the second plate (12) is fixedly connected to the left side of the upper end face of the supporting bottom plate (1), and a semicircular groove (121) is formed in the upper end of the second plate (12); a first groove (111) is formed in one side, opposite to the second plate (12), of the first plate (11), and the first groove (111) is cylindrical; a telescopic cylinder (112) is fixedly connected to the center of the first groove (111), and an output shaft of the telescopic cylinder (112) extends towards the second plate (12); one end of the telescopic cylinder (112) close to the second plate (12) is fixedly connected with a supporting block (113), and the supporting block (113) is a cylinder; the first plate (11) is fixedly connected with a first column (13), the first column (13) is located right above a first groove (111), scale marks are carved on the first column (13), the other end of the first column (13) extends towards a second plate (12), a first block (2) is connected to the first column (13) in a left-right sliding mode, a second groove (21) is formed in the lower side of the first block (2), and the second groove (21) is cylindrical; a third groove (22) is vertically formed in the first block (2), the third groove (22) is a plate-shaped groove and is formed in the middle of the left end and the right end of the first block (2), an electric telescopic rod (23) is fixedly connected to the upper end of the third groove (22), a guide rod of the electric telescopic rod (23) extends towards the direction of the supporting base plate (1), and the telescopic rod is located above the second groove (21) in an initial state; a blade (24) is arranged in the third groove (22), and the middle of the upper end of the blade (24) is fixedly connected to a guide rod of the electric telescopic rod (23).

2. The PVC pipe production and processing equipment of claim 1, wherein: the cross-section of the lower end of the blade (24) is arc-shaped, and frosted layers are laid on two sides of the blade (24).

3. The PVC pipe production and processing equipment of claim 2, wherein: no. three groove (22) both sides have been seted up No. four groove (25), No. four groove (25) are located the top of No. two groove (21), No. four groove (25) upper ends have linked firmly spring (26), the lower extreme of spring (26) has linked firmly No. two piece (27), No. two piece (27) sliding connection is in No. four groove (25), No. two piece (27) are connected with the telescopic link of electric telescopic handle (23) through elasticity rope (271).

4. The PVC pipe production and processing equipment of claim 3, wherein: the lower end of the second block (27) is arranged in an arc shape, and the lower end of the second block (27) and the second groove (21) are of concentric circle structures.

5. The PVC pipe production and processing equipment of claim 4, wherein: arc-shaped rubber pads (272) are arranged on two sides of the lower end of the second block (27), and the lower surface roughness of the arc-shaped rubber pads (272) is high.

6. The PVC pipe production and processing equipment of claim 5, wherein: no. two grooves (21) and semicircle recess (121) surfaces have all been seted up bar groove (28), the edge department in bar groove (28) is soft material.

7. A processing technology of a PVC pipe is characterized in that: the process is suitable for the PVC pipe production equipment as defined in any of claims 1-6, and comprises the following steps:

s1: mixing the raw material slurry of the PVC pipe by using stirring equipment in a mixing unit, uniformly mixing the raw material slurry with the PVC pipe, putting the mixed raw material slurry of the PVC pipe into an extrusion unit, and extruding the PVC pipe into a tubular shape by using a forming die of the extrusion unit;

s2: placing the PVC pipe extruded into a tubular shape into a cooling tank for cooling, wherein the temperature of cooling water in the cooling tank is 15-20 ℃, after the PVC pipe is cooled in the cooling tank, pulling the PVC pipe to move through a traction unit to enable the PVC pipe to move to a required position, and then cutting the PVC pipe through a cutting machine according to the length requirement of the PVC pipe;

s3: after the PVC pipe is cut, according to the requirements for the opening size of the PVC pipe when the PVC pipe is used, flaring is carried out on the cut PVC pipe through the flaring unit, and the required PVC pipe is obtained after the flaring is finished.

Technical Field

The invention relates to the technical field of PVC pipe processing, in particular to PVC pipe production processing equipment and a processing technology.

Background

The PVC pipe is a polyvinyl chloride pipe, is a high polymer material obtained by vinyl chloride through addition polymerization reaction, and is a third most widely produced synthetic plastic polymer after polyethylene and polypropylene; PVC is white powder with an amorphous structure, has poor stability to light and heat, does not have a fixed melting point, has better mechanical property and excellent dielectric property; PVC pipe is produced by mixing, extrusion, cooling, drawing, cutting and flaring.

The technical scheme of the patent related to PVC pipe production and processing equipment and processing technology also appears in the prior art, and a Chinese patent with application number CN2017213597518 discloses a pipe shear for shearing PVC pipes, which comprises a fixed block, a semicircular blade and a handle, wherein one side of the fixed block is provided with a limiting block, supporting blocks are arranged on two sides of the limiting block, one side of the limiting block is provided with a buffer block, one side of the buffer block is connected with the buffer block on one side of a supporting rod in a working bin through a spring, one side of the working bin is provided with a rubber pad connected with the supporting block, one side of the supporting rod is provided with a fixed rod, and one side of the fixed rod is provided with a connecting rod;

in the prior art, the inner part of the fixing ring is connected with the fixture block in a sliding way through the groove, one side of the fixture block is provided with the rotating block, and the inner part of the working bin is provided with the semicircular gear; the application avoids the phenomena of mistaken cutting and burr generation in the use process; but among the prior art cutting means of PVC pipe that the family used need manually right the PVC pipe in the use, make the PVC pipe when the cutting, the PVC pipe can be because of receiving the cutting force effect PVC pipe can take place vibrations, lead to the PVC pipe after the cutting is accomplished, the phenomenon of mouth of pipe unevenness can appear in the PVC pipe, and when cutting the PVC pipe, the problem that deformation takes place for the mouth of pipe pressurized of PVC pipe, thereby lead to the PVC pipe when using, the not high problem of availability factor of PVC pipe.

In view of the above, the invention provides a production and processing device and a processing technology of a PVC pipe, which solve the above problems.

Disclosure of Invention

In order to make up the defects of the prior art and solve the problems that when a PVC pipe cutting tool used by families in the prior art is used, the PVC pipe needs to be manually straightened, so that the PVC pipe orifice is deformed and is uneven when the PVC pipe is cut and the pipe orifice of the cutting pipe is pressed; the invention provides a PVC pipe production processing device and a processing technology.

The technical scheme adopted by the invention for solving the technical problems is as follows: a PVC tube production processing device comprises a mixing unit, an extrusion unit, a cooling unit, a traction unit, a cutting unit and a flaring unit; the PVC pipe production line comprises a mixing unit, an extruding unit, a cooling unit, a drawing unit, a cutting unit and a flaring unit, wherein the mixing unit is used for mixing raw material slurry of a PVC pipe, the extruding unit is used for extruding the mixed raw material of the PVC pipe through an extruder, the cooling unit is used for cooling and solidifying the extruded PVC pipe, the drawing unit is used for drawing the cooled PVC pipe out through a drawing machine, the cutting unit is used for cutting off the PVC pipe, and the flaring unit is used for flaring the cut PVC pipe; the cutting unit comprises a cutting machine, the cutting machine comprises a supporting base plate, a first plate and a second plate, and one end of the first plate is fixedly connected to the right side of the upper end surface of the supporting base plate; the second plate is fixedly connected to the left side of the upper end face of the supporting bottom plate, and a semicircular groove is formed in the upper end of the second plate; a first groove is formed in one side, opposite to the second plate, of the first plate, and the first groove is cylindrical; the center of the first groove is fixedly connected with a telescopic cylinder, and an output shaft of the telescopic cylinder extends to the direction of the second plate; one end of the telescopic cylinder, which is close to the second plate, is fixedly connected with a supporting block, and the supporting block is a cylinder; the first plate is fixedly connected with a first column which is positioned above the first groove, scale marks are carved on the surface of the first column, the other end of the first column extends to the direction of a second plate, a first block is connected to the first column in a left-right sliding mode, a second groove is formed in the lower side of the first block, and the second groove is cylindrical; a third groove is vertically formed in the first block, the third groove is a plate-shaped groove and is formed in the middle of the left end and the right end of the first block, an electric telescopic rod is fixedly connected to the upper end of the third groove, a guide rod of the electric telescopic rod extends towards the direction of the supporting base plate, and the telescopic rod is located above the second groove in an initial state; a blade is arranged in the third groove, and the middle part of the upper end of the blade is fixedly connected to a guide rod of the electric telescopic rod;

when the PVC pipe cutting machine is used, when a constructor cuts a PVC pipe, a first plate is arranged on one side of a supporting base plate, a second plate is arranged on the other side of the supporting base plate, a first groove is formed in the first plate, a first column is arranged on the first plate, scale marks are carved on the first column, a first block is connected to the first column in a sliding mode, a second groove is formed in the lower side of the first block, the second groove is cylindrical in shape, a semicircular groove is formed in the upper end of the second plate, when the PVC pipe is cut, the PVC pipe extends into the second groove, the hollow part in the middle of the PVC pipe is sleeved on the supporting block, then the PVC pipe is pushed to extend into the first groove, one end of the PVC pipe is supported in the first groove, the other end of the PVC pipe is erected in the groove of the second plate, the PVC pipe is supported on the semicircular groove, a third groove is formed in the first block, and an electric telescopic rod is arranged at the upper end of the third groove, set up at electric telescopic handle's output shaft lower extreme and link firmly the blade, after the PVC pipe supports the completion, electric telescopic handle promotes downwards, electric telescopic handle promotes the blade and moves downwards, the blade cuts the PVC pipe afterwards, and through linking firmly telescopic cylinder at an inslot, when the blade cuts the PVC pipe, the supporting shoe of telescopic cylinder one end supports the inner wall of PVC pipe, thereby avoided the PVC pipe when cutting, the PVC pipe takes place to deform, and through making sliding connection between a piece and a post, and carve the scale mark on the surface of a post, when carrying out the cutting of different size length to the PVC pipe, through a slip piece and telescopic cylinder, make the availability factor of cutting machine increase.

Preferably, the section of the lower end of the blade is arc-shaped, the lower middle part of the blade protrudes upwards, and two sides of the blade are paved with frosted layers;

when in use, the section of the lower end of the blade is arranged in an arc shape, and the middle part of the blade is protruded upwards, after the PVC pipe is pushed into the second groove, the hollow structure in the middle of the PVC pipe is sleeved on the outer ring of the supporting block, then the PVC pipe is continuously pushed into the first groove, the PVC pipe is supported in the first groove, then the electric telescopic rod stretches, when the electric telescopic rod pushes the blade, the blade contacts the PVC pipe in the descending process, when the blade is in primary contact with the PVC pipe, the lower side of the blade is arranged in an arc shape, so that the contact area between the blade and the PVC pipe is increased, thereby improving the stability of the PVC pipe during cutting to a certain extent, and by paving the frosted layers on the two sides of the blade, when the blade cuts the PVC pipe, the blade polishes the inner wall after the PVC pipe cutting, avoids the PVC pipe burr to the availability factor of cutting machine has been improved.

Preferably, four grooves are formed in two sides of the third groove, the four grooves are located above the second groove, the upper end of the four grooves is fixedly connected with a spring, the lower end of the spring is fixedly connected with a second block, the second block is connected with the inner wall of the four grooves in a sliding mode, and the second block is fixedly connected with an output shaft of the electric telescopic rod through an elastic rope;

during the use, set up No. four grooves through the both sides in No. three grooves, and make No. four grooves be located the top in No. two grooves, the upper end inner wall in No. four grooves has linked firmly the spring, the lower extreme at the spring has linked firmly No. two pieces, and make No. two pieces link firmly through elasticity rope and electric telescopic handle's output shaft, when electric telescopic handle promotes the blade and moves down, the blade is drawn first and is contacted the PVC pipe, when the blade cuts the PVC pipe, electric telescopic handle's output shaft is at the in-process that promotes downwards, electric telescopic handle's output shaft extrudees the PVC pipe through No. two pieces of elasticity rope pulling, thereby the stability of PVC pipe when cutting has been improved to a certain extent, thereby avoided the PVC pipe to produce the error when the cutting.

Preferably, the lower end of the second block is arranged in an arc shape, and the lower end of the second block and the second groove are in a concentric circle structure;

when the PVC pipe cutting device is used, the lower end of the second block is arranged in an arc shape, the lower end of the second block and the second groove are in a concentric circle structure, when a PVC pipe is cut, the PVC pipe is pushed to enter the second groove, then the PVC pipe is pushed to enter the first groove, the first groove and the telescopic cylinder are enabled to support the PVC pipe, after the PVC pipe is supported, the electric telescopic rod moves downwards, the electric telescopic rod pushes the blade to cut the PVC pipe, when the blade is cut, the second block is firstly extruded by the self gravity and the elasticity of the spring, then the electric telescopic rod moves downwards to pull the elastic rope, then the elastic rope pulls the second block to extrude the PVC pipe, the lower end of the second block is arranged in an arc shape, when the second block extrudes the PVC pipe, the contact area between the second block and the PVC pipe is increased, so that the stability of the PVC pipe is increased when the PVC pipe is cut, thereby improving the use efficiency of the shearing machine.

Preferably, arc-shaped rubber pads are arranged on two sides of the lower end of the second block, and the lower surfaces of the arc-shaped rubber pads are high in roughness;

when the PVC pipe cutting machine is used, the arc-shaped rubber pads are arranged on two sides of the lower end of the second block, the roughness of the arc-shaped rubber pads is improved, when a PVC pipe is cut, the PVC pipe extends into the second groove, the supporting block enters the cavity inside the PVC pipe, the PVC pipe is supported inside the first groove, the electric telescopic rod moves downwards, when the electric telescopic rod moves downwards, the elastic rope contracts, the tensile force of the elastic rope on the second block is reduced, the second block moves downwards under the combined action of the gravity of the second block and the spring, when the second block moves downwards, the second block contacts with the PVC pipe, the arc-shaped rubber pads are in contact with the PVC pipe, and the friction coefficient between the arc-shaped rubber blocks and the PVC pipe is increased due to the high roughness of the lower surface of the arc-shaped rubber pads, so that the friction force between the second block and the PVC pipe is increased, thereby further increasing the stability of the PVC pipe when cut.

Preferably, the surfaces of the second groove and the semicircular groove are both provided with a strip-shaped groove, and the edge of the strip-shaped groove is made of a soft material;

during the use, through evenly having seted up the bar groove on No. two grooves and semicircle recess surfaces, and the edge department in bar groove has linked firmly the rubber strip, when cutting the PVC pipe, through stretching into the PVC pipe No. two inslots, the inside cavity of supporting shoe entering PVC pipe afterwards, then promote the PVC pipe and get into an inslot, the one end that a board was kept away from to the PVC pipe is supported on the semicircle recess on No. two boards, and be located the PVC pipe support of No. two inslots on the inner wall in No. two grooves, set up the bar groove through the inner wall at No. two grooves and semicircle recess, when making the PVC pipe contact with the inner wall of No. two grooves and semicircle recess, the coefficient of friction between PVC pipe and No. two grooves and semicircle recess increases, thereby the stability of PVC pipe has been improved.

A production process of a PVC pipe is suitable for the PVC pipe production equipment, and the equipment comprises the following steps:

s1: mixing the raw material slurry of the PVC pipe by using stirring equipment in a mixing unit, uniformly mixing the raw material slurry with the PVC pipe, putting the mixed raw material slurry of the PVC pipe into an extrusion unit, and extruding the PVC pipe into a tubular shape by using a forming die of the extrusion unit;

s2: placing the PVC pipe extruded into a tubular shape into a cooling tank for cooling, wherein the temperature of cooling water in the cooling tank is 15-20 ℃, after the PVC pipe is cooled in the cooling tank, pulling the PVC pipe to move through a traction unit to enable the PVC pipe to move to a required position, and then cutting the PVC pipe through a cutting machine according to the length requirement of the PVC pipe;

s3: after the PVC pipe is cut, according to the requirements for the opening size of the PVC pipe when the PVC pipe is used, flaring is carried out on the cut PVC pipe through the flaring unit, and the required PVC pipe is obtained after the flaring is finished.

The invention has the following beneficial effects:

1. the invention relates to a PVC pipe production processing device and a processing technology, wherein a third groove, a fourth groove, a spring, a second block and an elastic rope are arranged; when electric telescopic handle promoted the blade and moved down, the blade was taken lead to contact the PVC pipe, and electric telescopic handle's output shaft is at the in-process that promotes downwards, and electric telescopic handle's output shaft extrudees the PVC pipe through No. two pieces of elastic rope pulling to improved the stability of PVC pipe when cutting to a certain extent, thereby avoided the PVC pipe to produce the error when the cutting.

2. The PVC pipe production processing equipment and the processing technology provided by the invention have the advantages that the arc-shaped rubber pad and the strip-shaped groove are arranged; the second block is contacted with the PVC pipe, so that the arc-shaped rubber pad is contacted with the PVC pipe, and the lower surface roughness of the arc-shaped rubber pad is high, so that the friction coefficient between the arc-shaped rubber block and the PVC pipe is increased, the friction force between the second block and the PVC pipe is increased, and the stability of the PVC pipe during cutting is further increased.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a process flow diagram of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a cross-sectional view of the first block of FIG. 2;

FIG. 4 is an internal structural view of block number one in FIG. 3;

in the figure: the support base plate 1, a first plate 11, a first groove 111, the first groove 111, a telescopic cylinder 112, a support block 113, a second plate 12, a semicircular groove 121, a first column 13, a first block 2, a second groove 21, a third groove 22, an electric telescopic rod 23, a blade 24, a fourth groove 25, a spring 26, a second block 27, an elastic rope 271, an arc-shaped rubber pad 272 and a strip-shaped groove 28.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, a PVC pipe production processing apparatus includes a mixing unit, an extruding unit, a cooling unit, a drawing unit, a cutting unit, and a flaring unit; the PVC pipe production line comprises a mixing unit, an extruding unit, a cooling unit, a drawing unit, a cutting unit and a flaring unit, wherein the mixing unit is used for mixing raw material slurry of a PVC pipe, the extruding unit is used for extruding the mixed raw material of the PVC pipe through an extruder, the cooling unit is used for cooling and solidifying the extruded PVC pipe, the drawing unit is used for drawing the cooled PVC pipe out through a drawing machine, the cutting unit is used for cutting off the PVC pipe, and the flaring unit is used for flaring the cut PVC pipe; the cutting unit comprises a cutting machine, the cutting machine comprises a supporting base plate 1, a first plate 11 and a second plate 12, and one end of the first plate 11 is fixedly connected to the right side of the upper end face of the supporting base plate 1; the second plate 12 is fixedly connected to the left side of the upper end face of the supporting base plate 1, and a semicircular groove 121 is formed in the upper end of the second plate 12; a first groove 111 is formed in one side of the first plate 11 opposite to the second plate 12, and the first groove 111 is cylindrical; a telescopic cylinder 112 is fixedly connected to the center of the first groove 111, and an output shaft of the telescopic cylinder 112 extends towards the second plate 12; one end of the telescopic cylinder 112 close to the second plate 12 is fixedly connected with a supporting block 113, and the supporting block 113 is a cylinder; the first plate 11 is fixedly connected with a first column 13, the first column 13 is positioned above a first groove 111, scale marks are carved on the surface of the first column 13, the other end of the first column 13 extends to the direction of a second plate 12, a first block 2 is connected to the first column 13 in a left-right sliding mode, a second groove 21 is formed in the lower side of the first block 2, and the second groove 21 is cylindrical; a third groove 22 is vertically formed in the first block 2, the third groove 22 is a plate-shaped groove and is formed in the middle of the left end and the right end of the first block 2, the upper end of the third groove 22 is fixedly connected with an electric telescopic rod 23, a guide rod of the electric telescopic rod 23 extends towards the direction of the supporting base plate 1, and the telescopic rod is located above the second groove 21 in an initial state; a blade 24 is arranged in the third groove 22, and the middle part of the upper end of the blade 24 is fixedly connected to a guide rod of an electric telescopic rod 23;

when the PVC pipe cutting machine is used, when a constructor cuts a PVC pipe, a first plate 11 is arranged on one side of a supporting base plate 1, a second plate 12 is arranged on the other side of the supporting base plate, a first groove 111 is formed in the first plate 11, a first column 13 is arranged on the first plate 11, scale marks are carved on the first column 13, a first block 2 is connected to the first column 13 in a sliding mode, a second groove 21 is formed in the lower side of the first block 2, the second groove 21 is cylindrical, a semicircular groove 121 is formed in the upper end of the second plate 12, when the PVC pipe is cut, the PVC pipe extends into the second groove 21, the hollow part in the middle of the PVC pipe is sleeved on a supporting block 113, then the PVC pipe is pushed to extend into the first groove 111, one end of the PVC pipe is supported in the first groove 111, the other end of the PVC pipe is erected in the semicircular groove 121 of the second plate 12, the PVC pipe is supported on the cutting machine, and a third groove 22 is formed in the first block 2, set up electric telescopic handle 23 in the upper end of No. three groove 22, output shaft lower extreme at electric telescopic handle 23 sets up and links firmly blade 24, after the PVC pipe supported the completion, electric telescopic handle 23 promotes downwards, electric telescopic handle 23 promotes blade 24 and moves downwards, blade 24 cuts the PVC pipe afterwards, and through linking firmly telescopic cylinder 112 in a groove 111, when blade 24 cuts the PVC pipe, the supporting shoe 113 of telescopic cylinder 112 one end supports the inner wall of PVC pipe, thereby avoided the PVC pipe when cutting, the PVC pipe takes place deformation, and through making sliding connection between a piece 2 and a post 13, and carve the scale mark on the surface of a post 13, when carrying out the cutting of different size length to the PVC pipe, through sliding a piece 2 and telescopic cylinder 112, make the availability factor of cutting machine increase.

As a specific embodiment of the invention, the cross section of the lower end of the blade 24 is arc-shaped, the middle part of the lower part of the blade 24 protrudes upwards, and two sides of the blade 24 are paved with frosted layers;

when the PVC pipe cutting tool is used, the cross section of the lower end of the blade 24 is arranged in an arc shape, the middle part of the blade 24 protrudes upwards, after the PVC pipe is pushed to enter the second groove 21, the hollow structure in the middle part of the PVC pipe is sleeved on the outer ring of the supporting block 113, then the PVC pipe is continuously pushed to enter the first groove 111, the PVC pipe is supported in the first groove 111, then the electric telescopic rod 23 stretches out and draws back, when the electric telescopic rod 23 pushes the blade 24, the blade 24 contacts the PVC pipe in the descending process, when the blade 24 contacts the PVC pipe for the first time, the arc shape of the lower side of the blade 24 is arranged, the contact area between the blade 24 and the PVC pipe is increased, so that the stability of the PVC pipe during cutting is increased to a certain degree, and the frosting layers are paved on the two sides of the blade 24, when the blade 24 cuts the PVC pipe, the inner wall of the blade 24 after cutting the PVC pipe is polished, and burrs of the PVC pipe are avoided, thereby improving the use efficiency of the cutting machine.

As a specific embodiment of the invention, a fourth groove 25 is formed on two sides of the third groove 22, the fourth groove 25 is located above the second groove 21, the upper end of the fourth groove 25 is fixedly connected with a spring 26, the lower end of the spring 26 is fixedly connected with a second block 27, the second block 27 is slidably connected with the inner wall of the fourth groove 25, and the second block 27 is fixedly connected with the output shaft of the electric telescopic rod 23 through an elastic rope 271;

during the use, No. four grooves 25 are seted up through the both sides at No. three groove 22, and make No. four grooves 25 be located No. two groove 21's top, the upper end inner wall at No. four groove 25 has linked firmly spring 26, the lower extreme at spring 26 has linked firmly No. two piece 27, and make No. two piece 27 link firmly through the output shaft of elasticity rope 271 with electric telescopic handle 23, when electric telescopic handle 23 promoted blade 24 and moved down, blade 24 contacts the PVC pipe earlier, when blade 24 cuts the PVC pipe, electric telescopic handle 23's output shaft is at the in-process that promotes downwards, electric telescopic handle 23's output shaft extrudees the PVC pipe through No. two pieces 27 of elasticity rope 271 pulling, thereby the stability of PVC pipe when cutting has been improved to a certain extent, thereby avoided the PVC pipe to produce the error when the cutting.

As a specific embodiment of the present invention, the lower end of the second block 27 is arranged in an arc shape, and the lower end of the second block 27 and the second groove 21 are in a concentric structure;

when the PVC pipe cutting machine is used, the lower end of the second block 27 is arranged in an arc shape, the lower end of the second block 27 and the second groove 21 are in a concentric circle structure, when a PVC pipe is cut, the PVC pipe is pushed to enter the second groove 21, then the PVC pipe is pushed to enter the first groove 111, the first groove 111 and the telescopic cylinder 112 are used for supporting the PVC pipe, after the PVC pipe is supported, the electric telescopic rod 23 moves downwards, the electric telescopic rod 23 pushes the blade 24 to cut the PVC pipe, when the blade 24 is cut, the second block 27 is firstly extruded by the self gravity and the elasticity of the spring 26, then the electric telescopic rod 23 moves downwards to pull the elastic rope 271, then the elastic rope 271 pulls the second block 27 to extrude the PVC pipe, the lower end of the second block 27 is arranged in an arc shape, when the second block 27 extrudes the PVC pipe, the contact area between the second block 27 and the PVC pipe is increased, therefore, when the PVC pipe is cut, the stability of the PVC pipe is increased, and the use efficiency of the shearing machine is improved.

As a specific embodiment of the present invention, arc-shaped rubber pads 272 are disposed on two sides of the lower end of the second block 27, and the lower surface of each arc-shaped rubber pad 272 has high roughness;

when the PVC pipe cutting machine is used, the arc-shaped rubber pads 272 are arranged on two sides of the lower end of the second block 27, the roughness of the arc-shaped rubber pads 272 is improved, when the PVC pipe is cut, the PVC pipe extends into the second groove 21, the supporting block 113 enters the cavity inside the PVC pipe, the PVC pipe is supported inside the first groove 111, the electric telescopic rod 23 moves downwards, the elastic rope 271 contracts when the electric telescopic rod 23 moves downwards, the tensile force of the elastic rope 271 on the second block 27 is reduced, the second block 27 moves downwards under the combined action of the gravity of the second block 27 and the spring 26, when the second block 27 moves downwards, the second block 27 contacts with the PVC pipe, the arc-shaped rubber pads 272 contact with the PVC pipe, and the lower surface roughness of the arc-shaped rubber pads 272 is high, so that the friction coefficient between the arc-shaped rubber blocks and the PVC pipe is increased, thereby increasing the friction between block two 27 and the PVC pipe and further increasing the stability of the PVC pipe when cut.

As a specific embodiment of the present invention, the surfaces of the second groove 21 and the semicircular groove 121 are both provided with a strip-shaped groove 28, and the edge of the strip-shaped groove 28 is made of a soft material;

during the use, through evenly seted up bar groove 28 on No. two grooves 21 and semicircle recess 121 surfaces, and the edge department at bar groove 28 has linked firmly the rubber strip, when cutting the PVC pipe, through stretching into No. two inslots 21 to the PVC pipe, the inside cavity of supporting shoe 113 entering PVC pipe afterwards, then promote the PVC pipe and get into No. one inslot 111, the one end that a board 11 was kept away from to the PVC pipe supports on No. two semicircle recesses 121 on board 12, and the PVC pipe that is located No. two inslots 21 supports on No. two inner walls of groove 21, bar groove 28 is seted up through the inner wall at No. two grooves 21 and semicircle recesses 121, when making the PVC pipe contact with the inner wall of No. two grooves 21 and semicircle recesses 121, the coefficient of friction between PVC pipe and No. two grooves 21 and semicircle recesses 121 increases, thereby the stability of PVC pipe has been improved.

A production process of a PVC pipe is suitable for the PVC pipe production equipment, and the equipment comprises the following steps:

s1: mixing the raw material slurry of the PVC pipe by using stirring equipment in a mixing unit, uniformly mixing the raw material slurry with the PVC pipe, putting the mixed raw material slurry of the PVC pipe into an extrusion unit, and extruding the PVC pipe into a tubular shape by using a forming die of the extrusion unit;

s2: placing the PVC pipe extruded into a tubular shape into a cooling tank for cooling, wherein the temperature of cooling water in the cooling tank is 15-20 ℃, after the PVC pipe is cooled in the cooling tank, pulling the PVC pipe to move through a traction unit to enable the PVC pipe to move to a required position, and then cutting the PVC pipe through a cutting machine according to the length requirement of the PVC pipe;

s3: after the PVC pipe is cut, according to the requirements for the opening size of the PVC pipe when the PVC pipe is used, flaring is carried out on the cut PVC pipe through the flaring unit, and the required PVC pipe is obtained after the flaring is finished.

The specific working process is as follows:

when a constructor cuts a PVC pipe, a first plate 11 is arranged on one side of a supporting base plate 1, a second plate 12 is arranged on the other side of the supporting base plate, a first groove 111 is formed in the first plate 11, a first column 13 is arranged on the first plate 11, a scale mark is carved on the first column 13, a first block 2 is connected to the first column 13 in a sliding mode, a second groove 21 is formed in the lower side of the first block 2, the second groove 21 is cylindrical, a semicircular groove 121 is formed in the upper end of the second plate 12, when the PVC pipe is cut, the PVC pipe extends into the second groove 21, the hollow part in the middle of the PVC pipe is sleeved on a supporting block 113, then the PVC pipe is pushed to extend into the first groove 111, one end of the PVC pipe is supported in the first groove 111, the other end of the PVC pipe is erected in the semicircular groove 121 of the second plate 12, the PVC pipe is supported on a cutting machine, and a third groove 22 is formed in the first block 2, set up electric telescopic handle 23 in the upper end of No. three groove 22, output shaft lower extreme at electric telescopic handle 23 sets up and links firmly blade 24, after the PVC pipe supported the completion, electric telescopic handle 23 promotes downwards, electric telescopic handle 23 promotes blade 24 and moves downwards, blade 24 cuts the PVC pipe afterwards, and through linking firmly telescopic cylinder 112 in a groove 111, when blade 24 cuts the PVC pipe, the supporting shoe 113 of telescopic cylinder 112 one end supports the inner wall of PVC pipe, thereby avoided the PVC pipe when cutting, the PVC pipe takes place deformation, and through making sliding connection between a piece 2 and a post 13, and carve the scale mark on the surface of a post 13, when carrying out the cutting of different size length to the PVC pipe, through sliding a piece 2 and telescopic cylinder 112, make the availability factor of cutting machine increase.

The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.