CN111086154A

CN111086154A - PVC tubular product forming equipment

Info

Publication number: CN111086154A
Application number: CN201911357530.0A
Authority: CN
Inventors: 张洪
Original assignee: Jiangyin Deboren Pipe Fitting Co ltd
Current assignee: Jiangyin Deboren Pipe Fitting Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-05-01

Abstract

The invention discloses a forming device of PVC pipes, wherein an upper die base can be driven to carry out one-time die assembly operation by rotating a rotary table once, so that the die assembly is quicker, the die assembly speed can be adjusted by adjusting the rotating speed of a motor, the operation and the control are more convenient, a worm wheel and a worm are mutually matched, and the forming device has a self-locking function, so that the die expansion during injection molding can be effectively avoided, the injection molding quality of an injection molding piece can be effectively improved, the rotating diameter of the rotary table can be adjusted, the lifting distance of the upper die base can be flexibly adjusted, and the forming device is more flexible and convenient to use. And set up buffer in the feeder hopper of injection molding machine, avoid the material to fall to the injection molding machine at a high speed, avoid the injection molding machine to receive the damage, promote its life. The feeder hopper lets in the fan through hot-blast recoverer with exhaust pipe exhaust hot-blast, by fan cycle use to avoid the temperature rise in the factory building, keep the interior air cleanness of factory building.

Description

PVC tubular product forming equipment

Technical Field

The invention relates to the technical field of injection molding equipment, in particular to PVC pipe forming equipment.

Background

PVC tubular product is widely used in the pipe network of transport liquid, gaseous, and people also have higher and higher performance requirement to PVC tubular product. PVC pipes are generally injection molded using an injection molding machine, which is a major molding apparatus for molding thermoplastic plastics or thermosetting plastics into plastic products of various shapes using a plastic molding mold. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity. The injection molding machine has the capability of molding plastic products with complex shapes, precise sizes or dense textures with metal inserts in one step, and is widely applied to various fields of national defense, electromechanics, automobiles, transportation, building materials, packaging, agriculture, cultural and educational sanitation and daily life of people.

However, the existing molding equipment has the following disadvantages in the use process:

1. the injection molding machine is slow in mold closing speed in the using process, so that the injection molding efficiency of the injection molding machine is low, and the mold expansion is easy to occur after the mold is closed, so that the injection molding quality of injection molding parts is greatly reduced, and the defective rate is increased.

2. The flexibility of the injection molding machine is poor in the mold closing process, and the mold closing distance cannot be adjusted, so that the movable mold and the static mold with different thicknesses cannot be closed.

3. When the feeder hopper of injection molding machine fed, the material fell perpendicularly to the barrel of injection molding machine in from the feeder hopper, produced powerful impact force to the injection molding machine in the barrel, so the easy damage of injection molding machine, influenced its life, improved producer's cost to maintenance in the injection molding machine barrel is comparatively complicated, and then influences injection molding system's normal use.

4. The desiccator of injection molding machine discharges the hot-blast through the exhaust pipe in the factory building after with the material drying for temperature risees in the factory building, and the air quality worsens, and causes hot-blast energy wasting of resources. And the desiccator can not be nimble the control feeder hopper in remain to make the machine idle running when not having the raw materials easily, reduced work efficiency, current injection molding machine feed arrangement blocks up the feeder hopper easily simultaneously, further reduced the work efficiency of injection molding machine.

Disclosure of Invention

The invention aims to provide a PVC pipe forming device, which solves the problems that the existing injection molding machine die pressing mechanism in the background technology has low die closing speed and poor flexibility in the use process, the die closing distance cannot be adjusted, so that the die closing of movable dies and static dies with different thicknesses cannot be performed, the injection molding machine is directly impacted by materials to cause damage, the air in a factory building is not clean, the materials are polluted, the residual in a feed hopper cannot be flexibly monitored, and the machine can idle easily when no raw materials exist.

In order to achieve the purpose, the invention provides the following technical scheme:

a PVC tubular product forming device comprises a dryer, a feed hopper, an injection molding machine body, a die pressing mechanism, a screw extrusion mechanism and a cooling forming mechanism, wherein the feed hopper is connected to the top of the injection molding machine body;

the feeding device comprises a feeding hopper, a feeding pipe, a valve, a base, a vibration rod, a casing, a sleeve and a damping spring frame, wherein the feeding pipe is arranged at the bottom of the feeding hopper, one end of the feeding pipe is provided with the valve, one side of the bottom surface of an inner cavity of the feeding hopper is provided with the base, the surface of the top of the base is provided with the pressure sensor, the surface of the outer wall of the feeding hopper is provided with a control mechanism, the right side wall of the feeding hopper is provided with the casing, the surface of the casing part at the bottom of the inner cavity is provided with the vibration pad, the surface of the top of the vibration pad is provided with;

the top of feeder hopper is provided with the exhaust pipe, the air outlet of exhaust pipe is connected with hot-blast recoverer, still be equipped with heating mechanism on the exhaust pipe, heating mechanism includes the fan with high-temperature hot-blast blowing in the feeder hopper, and this fan is connected with hot-blast recoverer, forms semi-enclosed circulation loop, and the exhaust hot-blast of the exhaust pipe of feeder hopper gets into the fan inner loop through hot-blast recoverer and uses, the lower extreme of fan is connected with the cartridge heater, the outside of cartridge heater is provided with the electric cabinet, be provided with the electrothermal tube in the cartridge heater.

The feeding hopper is internally provided with a buffer device at the joint with the injection molding machine body, the buffer device comprises two connecting shafts horizontally arranged on the inner wall of the feeding hopper, hollow shaft sleeves are sleeved on the connecting shafts, guide plates are fixed on the hollow shaft sleeves, and the guide plates rotate around the connecting shafts along with the hollow shaft sleeves; the lower surface of the guide plate is provided with a plurality of limiting rods vertical to the lower surface of the guide plate, and two adjacent limiting rods and the lower surface of the guide plate form a groove; a support rod is hinged on the inner wall of the feed hopper below the connecting shaft, one end of the support rod is hinged with the inner wall of the feed hopper, the other end of the support rod is inserted into a groove on the lower surface of the guide plate to support the guide plate, and the guide plate is obliquely arranged downwards;

the die pressing mechanism comprises a lower die base, guide columns, an upper die base, a static die and a movable die, the guide columns are fixedly screwed and connected to two ends of the upper surface of the lower die base in an inserting mode, the top of each guide column is connected with the upper die base in a penetrating mode, the static die is spirally connected to the middle of the upper surface of the lower die base, the movable die is spirally connected to the middle of the lower surface of the upper die base, a rotary disc is fixedly mounted at the top of the upper die base, a worm wheel is connected to the middle of the surface of one side of the rotary disc through a transmission shaft.

The worm is meshed with the worm wheel, and the other end of the worm is fixedly connected with a bearing seat.

An adjusting groove is formed in the surface of one side of the rotary table, and a sliding block is arranged in the inner cavity of the adjusting groove in a sliding mode.

The surface of the two side walls of the sliding block is spirally connected with a limiting screw rod, adjusting holes are formed in the two sides of the inner wall of the adjusting groove, and the adjusting holes are matched with the limiting screw rod.

The slider surface integrated into one piece has the pivot, the pivot surface cup joints the connecting rod No. one, the connecting rod other end rotates through the round pin axle and is connected with the connecting rod No. two, No. two connecting rod surface cup joints the direction slide.

The damping spring frame is connected with the surface of the outer wall of the sleeve through a cross rod.

The control mechanism consists of a control box, a touch all-in-one machine, a buzzer and a switch.

Control box surface mounting has the touch all-in-one, buzzer is installed to touch all-in-one bottom one side, the switch is installed to buzzer one side, the touch all-in-one passes through the wire and links to each other with pressure sensor, buzzer, switch and vibrating pump electrical property respectively.

Feeder hopper outer wall surface one side is inlayed and is connected with the observation window, the scale mark has been bonded on the observation window surface, the mounting panel has all been welded to feeder hopper outer wall both sides.

The invention provides a PVC pipe forming device, which has the following beneficial effects:

1. the invention drives the worm to rotate by controlling the motor on the mold clamping mechanism, one side of the worm is occluded and connected with the worm wheel so as to synchronously drive the worm wheel to rotate, one side of the worm wheel is connected with the turntable by the transmission shaft and further can synchronously drive the turntable to rotate, the first connecting rod is driven to rotate by the rotating shaft, the other end of the first connecting rod can drive the second connecting rod to perform reciprocating lifting motion in the guide sliding seat, and further can drive the upper mold base to perform mold clamping operation along the guide post by the second connecting rod, and the worm wheel and the worm are mutually matched, so that the invention has self-locking function, thereby effectively avoiding mold expansion during injection molding, effectively improving the injection molding quality of injection molding parts, driving the upper mold base to perform mold clamping operation once when the turntable rotates for one circle, enabling mold clamping to be quicker, and adjusting the mold clamping speed by adjusting the rotating speed of the motor, the operation and control are more convenient and faster.

2. According to the die closing mechanism, the adjusting groove is formed in the surface of the turntable of the die closing mechanism, the sliding block can be adjusted in the adjusting groove, the position of the rotating shaft can be adjusted, the lifting height of the upper die base can be adjusted by adjusting the rotating diameter of the rotating shaft, so that the moving die and the static die with different heights can be quickly closed, and the die closing mechanism is more flexible to use.

3. According to the invention, the buffer device is arranged in the feed hopper of the injection molding machine, and comprises two guide plates with adjustable inclination angles, so that the impact force of the material is transferred to the guide plates, the material is prevented from falling into the injection molding machine at a high speed, the injection molding machine is prevented from being damaged, the service life of the injection molding machine is prolonged, and the normal operation of the equipment is ensured.

4. The feeder hopper lets in the fan through hot-blast recoverer exhaust hot-blast with the exhaust pipe in, by fan cycle use, the energy saving saves company's cost to avoid the temperature rise in the factory building, keep the interior air cleanness of factory building.

5. The feeder hopper is through setting up the touch all-in-one, pressure sensor that can be nimble opens to can monitor the raw materials quality who adds in the feeder hopper, and can send the monitoring again to the touch all-in-one in, when pressure sensor monitoring received pressure and surpassed the touch all-in-one default, through the touch all-in-one, steerable bee calling organ operation, thereby can send out the police dispatch newspaper, and then can remind the staff to add the raw materials, improved the work efficiency of injection molding machine.

6. Through installing the vibrting spear at the feeder hopper inner chamber, and the vibrting spear input links to each other with the vibrating pump output, thereby can make the vibrating pump provide power for the vibrting spear, and then can make the vibrting spear vibrate in the feeder hopper, so that can prevent the raw materials jam in the raw materials feeder hopper, the smooth and easy nature of injection molding machine feed arrangement unloading has been improved, the work efficiency of injection molding machine has been improved, because vibrting spear surface mounting has the sleeve pipe, and feeder hopper inner wall both sides surface all installs the damping spring frame, the damping spring frame passes through horizontal pole and sleeve pipe outer wall surface and links to each other simultaneously, thereby can reduce the vibrations that the vibrting spear produced to the influence of feeder hopper.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the inner clamping mechanism of fig. 1.

Fig. 3 is a schematic structural diagram of the turntable in fig. 2.

Fig. 4 is a schematic view of the turntable and adjustment slot of fig. 2.

Fig. 5 is a schematic view of the structure of the regulating groove in fig. 4.

Fig. 6 is a schematic view of the feed hopper of fig. 1.

Fig. 7 is an internal cross-sectional view of fig. 6 with the exhaust duct removed.

Fig. 8 is an enlarged view of a portion a of fig. 7.

Fig. 9 is a schematic structural diagram of the control mechanism in fig. 6.

Fig. 10 is a schematic view of a buffer in the feed hopper of fig. 1.

Fig. 11 is a top view of fig. 10.

In the figure: the device comprises a lower die holder 1, a guide post 101, an upper die holder 102, a static die 103, a movable die 104, a rotary table 2, a worm wheel 201, a motor 202, a worm 203, a bearing seat 204, an adjusting groove 3, a sliding block 301, a limit screw 302, an adjusting hole 303, a rotating shaft 304, a first connecting rod 4, a second connecting rod 401, a guide sliding seat 402, a buffer device 5, a connecting shaft 5.1, a hollow shaft sleeve 5.2, a limit rod 5.3, a support rod 5.4, a groove 5.5, a guide plate 5.6, a feed hopper 6, a blanking pipe 7, a valve 701, a base 8, a pressure sensor 9, a control mechanism 10, a control box 1001, a touch integrated machine 1002, a buzzer 1003, a switch 1004, a casing 11, rubber and plastic soundproof cotton 1101, a shock pad 12, a vibrating pump 13, a vibrating rod 14, a sleeve 15, a shock absorbing spring frame 16, a cross rod 17, an observation window 18, a scale mark 19, a mounting plate 20, an exhaust pipe 21, a hot air, A heating cylinder 23.3 and an electrothermal tube 23.4.

Detailed Description

As shown in figures 1-11, the invention relates to a PVC tubular product forming device, which comprises a dryer, a feed hopper 6, an injection molding machine body, a die pressing mechanism, a screw extrusion mechanism, a cooling forming mechanism and other mechanisms, wherein the feed hopper is connected to the top of the injection molding machine body, the dryer is connected to the feed hopper 6, the material is dried and then is introduced into the die pressing mechanism for die pressing, then is extruded by the screw extrusion mechanism, and finally is cooled and formed;

the automatic feeding device is characterized in that a discharging pipe 7 is installed at the bottom of the feeding hopper 6, a valve 701 is installed at one end of the discharging pipe 7, a base 8 is installed on one side of the bottom surface of an inner cavity of the feeding hopper 6, a pressure sensor 9 is installed on the surface of the top of the base 8, a control mechanism 10 is installed on the surface of the outer wall of the feeding hopper 6, a casing 11 is installed on the right side wall of the feeding hopper 6, a shock pad 12 is installed on the surface of the casing 11, a vibrating pump 13 is installed on the surface of the top of the shock pad 12, a vibrating rod 14 is installed in the inner cavity of the feeding hopper 6, the input end of the vibrating rod 14 is connected with the output end of the vibrating pump 13, a sleeve 15 is installed on the surface of the vibrating rod 14, shock spring frames 16 are installed on the two side surfaces of the inner wall of the feeding, can prevent the raw materials from blocking the feed hopper 6 and improve the smoothness of raw material feeding.

Rubber and plastic soundproof cotton 1101 is bonded on the surface of the outer wall of the machine shell 11, so that the functions of sound insulation and noise reduction are achieved, and the comfort of the use environment is further improved.

The damping spring frame 16 is connected with the outer wall surface of the sleeve 15 through the cross rod 17, so that the damping spring frame 16 and the sleeve 15 can be connected into a whole, and the damping spring frame 16 can have a damping effect on the sleeve 15.

The control mechanism 10 is composed of a control box 1001, a touch integrated machine 1002, a buzzer 1003 and a switch 1004.

The surface of the control box 1001 is provided with a touch integrated machine 1002, one side of the bottom of the touch integrated machine 1002 is provided with a buzzer 1003, one side of the buzzer 1003 is provided with a switch 1004, the touch integrated machine 1002 is electrically connected with the pressure sensor 9, the buzzer 1003, the switch 1004 and the vibrating pump 13 through wires respectively, the operation of each device can be flexibly controlled through the touch integrated machine 1002, the buzzer 1003 can give an alarm to remind a worker, and meanwhile, the switch 1004 can be used for starting or closing the touch integrated machine 1002 to operate.

6 outer wall surface one side of feeder hopper is inlayed and is connected with

observation window

18, 18 surface bonding of observation window has scale mark 19, mounting panel 20 has all been welded to 6 outer wall both sides of feeder hopper, is connected with observation window 18 through inlaying in 6 outer wall surface one side of feeder hopper to 18 surface bonding of observation window has scale mark 19, thereby can be convenient for the staff observe the surplus of 6 inside raw materials of feeder hopper, the timely interpolation raw materials of staff of can being convenient for again.

An exhaust pipe 21 is arranged at the top of the feed hopper 6, the exhaust pipe 21 exhausts the hot air in the feed hopper 6, the air outlet of the exhaust pipe 21 is connected with a hot air recoverer 22, the exhaust pipe 21 is also provided with a heating mechanism 23, the heating mechanism 23 comprises a fan 23.1 which blows high-temperature hot air into the feed hopper 6, the fan 23.1 is connected with the hot air recoverer 22 to form a semi-closed circulation loop, hot air discharged by the exhaust pipe 21 of the feed hopper 6 enters the fan 23.1 through the hot air recoverer 22 for recycling, the temperature in the factory building is prevented from rising while the energy is saved, the air in the factory building is kept clean, the product quality is ensured, the lower end of the fan 23.1 is connected with a heating cylinder 23.3, an electric cabinet 23.2 is arranged outside the heating cylinder 23.3, an electrothermal tube 23.4 is disposed in the heating cylinder 23.3, and the electrothermal tube 23.4 heats the air in the heating cylinder 23.3.

The feed hopper 6 is provided with a buffer device 5 in the inside of the connection part with the injection molding machine body, and the buffer device 5 is used for preventing the material falling vertically from the feed hopper from directly impacting the screw of the injection molding machine and damaging the screw. The buffer device 5 comprises two connecting shafts 5.1 horizontally arranged on the inner wall of the feed hopper, hollow shaft sleeves 5.2 are respectively sleeved on the two connecting shafts 5.1, the hollow shaft sleeves 5.2 can rotate around the connecting shafts 5.1, guide plates 5.6 are fixed on the two hollow shaft sleeves 5.2, and the guide plates 5.6 rotate around the connecting shafts 5.1 along with the hollow shaft sleeves 5.2; the two flow guide plates 5.6 are respectively provided with a plurality of through holes through which materials can pass, and the through holes can divide the materials, so that on one hand, a large amount of materials are prevented from being accumulated on the flow guide plates 5.6, the load of the flow guide plates is increased, and on the other hand, the speed of the materials entering the feed hopper is prevented from being too slow; the lower surface of the guide plate 5.6 is provided with a plurality of limiting rods 5.3 vertical to the lower surface of the guide plate, and a groove 5.5 is formed between the adjacent two limiting rods 5.3 and the lower surface of the guide plate 5.6; all articulated on the inner wall of the feeder hopper that is located two connecting axles 5.1 below have bracing piece 5.4, the one end of bracing piece 5.4 is articulated with the inner wall of feeder hopper, the other end then inserts in the recess 5.5 of 5.6 lower surfaces of guide plate to support guide plate 5.6, guide plate 5.6 sets up downwards to one side, thereby the material in the buffering feeder hopper, make the speed that the material landing is on the injection molding machine slow down, reduce the impact force to the injection molding machine. When the distance between the two guide plates 5.6 (namely the inclination angle of the guide plates 5.6) needs to be adjusted, the position of the support rod 5.4 inserted in the groove 5.5 is changed, when the distance between the two guide plates 5.6 needs to be enlarged, the position of the support rod 5.4 inserted in the groove 5.5 is moved upwards, otherwise, when the distance between the two guide plates 5.6 needs to be reduced, the position of the support rod 5.4 inserted in the groove 5.5 is moved downwards.

The die pressing mechanism comprises a lower die base 1, guide columns 101, an upper die base 102, a static die 103 and a movable die 104, wherein the guide columns 101 are fixedly screwed and connected to the two ends of the upper surface of the lower die base 1, the upper die base 102 is connected to the tops of the guide columns 101 in a penetrating mode, the static die 103 is connected to the middle of the upper surface of the lower die base 1 in a screwed mode, and the movable die 104 is connected to the middle of the lower surface of the upper die base 102 in a screwed mode.

Upper die holder 102 top fixed mounting has carousel 2, be connected with worm wheel 201 through the transmission shaft in the middle of 2 side surfaces of carousel, worm wheel 201 bottom fixed mounting has motor 202, the power take off end of motor 202 is connected with worm 203, drives worm 203 through control motor 202 and rotates, and worm 203 one side interlock is connected with worm wheel 201 to can drive worm wheel 201 in step and rotate, worm wheel 201 one side is connected with carousel 2 through the transmission shaft, and then can rotate by synchro-driven carousel 2.

The worm 203 is meshed with the worm wheel 201 and connected, the other end of the worm 203 is fixedly connected with a bearing seat 204, the worm wheel 201 and the worm 203 are matched with each other and can be used for transmission, the worm wheel 201 and the worm 203 are matched with each other and can have a self-locking function, so that the phenomenon that a mold is expanded when injection molding is carried out can be effectively avoided, the injection molding quality of an injection molding piece can be effectively improved, meanwhile, one end of the worm 203 is connected with the bearing seat 204, and the worm 203 can be more stable when rotating through the bearing seat 204.

Adjustment tank 3 has been seted up to 2 side surfaces of carousel, 3 inner chambers of adjustment tank slide and are provided with slider 301, and adjustment tank 3 has been seted up on 2 surfaces of carousel, and slider 301 can be adjusted in adjustment tank 3, and then can adjust the position of countershaft 304, adjusts through the diameter of rotating of countershaft 304 to can adjust the lift height of upper die base 102, thereby can make and all can carry out quick compound die operation to not co-altitude movable mould 104 and quiet mould 103, use more nimble.

The equal screwed connection in slider 301 both sides wall surface has spacing lead screw 302, regulation hole 303 has all been seted up to 3 inner wall both sides of adjustment tank, and regulation hole 303 and spacing lead screw 302 mutually support, and through rotatory spacing lead screw 302, spacing lead screw 302 can stretch out under the effect of surface screw thread to make spacing lead screw 302 one end inject in regulation hole 303, and then accomplish the fixed to slider 301, make more convenient of regulation.

The slider 301 surface integrated into one piece has pivot 304, pivot 304 surface cup joints connecting rod 4 No. one, the other end of connecting rod 4 rotates through the round pin axle and is connected with connecting rod 401 No. two, connecting rod 401 surface cup joints direction slide 402 No. two, carousel 2 drives connecting rod 4 through pivot 304 and rotates when rotating, connecting rod 4 other end can drive connecting rod 401 No. two and carry out reciprocating type elevating movement in direction slide 402, and then accessible connecting rod 401 drives upper die base 102 and carries out the compound die operation along guide post 101, and carousel 2 rotates the round at every turn and can drive upper die base 102 and carry out the compound die operation once, makes the compound die more quick, and adjusts the rotational speed through to motor 202, can adjust the compound die speed, makes to control more convenient.

It should be noted that, in the forming device of the PVC pipe, during operation, the control motor 202 drives the worm 203 to rotate, one side of the worm 203 is engaged with the worm wheel 201, so as to synchronously drive the worm wheel 201 to rotate, one side of the worm wheel 201 is connected with the turntable 2 through the transmission shaft, so as to synchronously drive the turntable 2 to rotate, the worm wheel 201 and the worm 203 are mutually matched to carry out transmission, and the worm wheel 201 and the worm 203 are mutually matched to have a self-locking function, so as to effectively avoid the occurrence of mold expansion during injection molding, meanwhile, one end of the worm 203 is connected with the bearing seat 204, the worm 203 can be more stable during rotation through the bearing seat 204, the surface of the turntable 2 is provided with the adjusting groove 3, the slide block 301 can be adjusted in the adjusting groove 3, so as to adjust the position of the rotating shaft 304, and adjust the rotating diameter of the rotating shaft 304, so as to adjust the lifting, thereby can make and all can carry out quick compound die operation to not high movable mould 104 and quiet mould 103, through rotatory spacing lead screw 302, spacing lead screw 302 can stretch out under the effect of surface screw thread, thereby make spacing lead screw 302 one end inject in the regulation hole 303, and then accomplish the fixed to slider 301, drive connecting rod 4 through pivot 304 and rotate, the other end of connecting rod 4 can drive No. two connecting rods 401 and carry out reciprocating type elevating movement in direction slide 402, and then accessible No. two connecting rods 401 drive upper die base 102 and carry out the compound die operation along guide post 101, and carousel 2 can drive upper die base 102 and carry out a compound die operation every time of rotating the round, make the compound die more quick, and adjust through the rotational speed to motor 202, can adjust to the compound die speed, make to control more convenient.

The motor 202 of the 5IK120RGN-CF type is a well-known prior art product and will not be described in detail herein.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a former of PVC tubular product which characterized in that: the injection molding machine consists of a dryer, a feed hopper, an injection molding machine body, a die pressing mechanism, a screw extrusion mechanism and a cooling molding mechanism, wherein the feed hopper is connected to the top of the injection molding machine body;

an exhaust pipe is arranged at the top of the feed hopper, an air outlet of the exhaust pipe is connected with a hot air recoverer, a heating mechanism is further arranged on the exhaust pipe, the heating mechanism comprises a fan for blowing high-temperature hot air into the feed hopper, the fan is connected with the hot air recoverer to form a semi-closed circulation loop, hot air exhausted by the exhaust pipe of the feed hopper enters the fan through the hot air recoverer for recycling, the lower end of the fan is connected with a heating cylinder, an electric cabinet is arranged outside the heating cylinder, and an electric heating tube is arranged in the heating cylinder;

2. The PVC pipe forming equipment according to claim 1, wherein: the worm is meshed with the worm wheel, and the other end of the worm is fixedly connected with a bearing seat.

3. The PVC pipe forming equipment according to claim 1, wherein: an adjusting groove is formed in the surface of one side of the rotary table, and a sliding block is arranged in the inner cavity of the adjusting groove in a sliding mode.

4. The PVC pipe forming equipment according to claim 3, wherein: the surface of the two side walls of the sliding block is spirally connected with a limiting screw rod, adjusting holes are formed in the two sides of the inner wall of the adjusting groove, and the adjusting holes are matched with the limiting screw rod.

5. The PVC pipe forming equipment according to claim 4, wherein: the slider surface integrated into one piece has the pivot, the pivot surface cup joints the connecting rod No. one, the connecting rod other end rotates through the round pin axle and is connected with the connecting rod No. two, No. two connecting rod surface cup joints the direction slide.

6. The PVC pipe forming equipment according to claim 1, wherein: the damping spring frame is connected with the surface of the outer wall of the sleeve through a cross rod.

7. The PVC pipe forming equipment according to claim 1, wherein: the control mechanism consists of a control box, a touch all-in-one machine, a buzzer and a switch.

8. The PVC pipe forming equipment according to claim 7, wherein: control box surface mounting has the touch all-in-one, buzzer is installed to touch all-in-one bottom one side, the switch is installed to buzzer one side, the touch all-in-one passes through the wire and links to each other with pressure sensor, buzzer, switch and vibrating pump electrical property respectively.

9. The PVC pipe forming equipment according to claim 1, wherein: feeder hopper outer wall surface one side is inlayed and is connected with the observation window, the scale mark has been bonded on the observation window surface, the mounting panel has all been welded to feeder hopper outer wall both sides.