CN111055475A

CN111055475A - Plastic drum production facility convenient to it is fixed based on blow molding technique

Info

Publication number: CN111055475A
Application number: CN201911297865.8A
Authority: CN
Inventors: 周义平
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-04-24

Abstract

The invention relates to a plastic barrel production device convenient to fix based on blow molding technology, which comprises a base, an ejector rod, a controller, a blowing mechanism, a sealing mechanism and two molding mechanisms, wherein each molding mechanism comprises a moving component, a mold and a vertical rod, each sealing mechanism comprises a lifting plate, a lifting component, an air bag, a fixing ring, a sleeve, a fixing pipe, a sealing plate and a spring, each blowing mechanism comprises a translation component, a translation plate, a rotation component, a blowing pipe, a compressor and two spray heads, after the adjacent molds are sealed by the sealing mechanisms, a parison is fixed on the periphery of each sleeve, the reduction of molding efficiency caused by air leakage in the blowing process is prevented, and moreover, the spray heads are driven to rotate by the blowing mechanisms and change the height positions, so that the spray heads blow from different direction angles, and the thicknesses of the plastic barrels are uniform and consistent after molding, the production quality of the plastic barrel is improved, and therefore the practicability of the equipment is improved.

Description

Plastic drum production facility convenient to it is fixed based on blow molding technique

Technical Field

The invention relates to the field of plastic product production equipment, in particular to plastic barrel production equipment which is based on blow molding technology and convenient to fix.

Background

Blow molding, which is mainly referred to as hollow blow molding (also called blow molding), is a method of forming a hollow article from a hot-melt parison closed in a mold by means of gas pressure, and is a plastic molding method that is developed relatively rapidly. The mold for blow molding is only a female mold (also called a female mold), and compared with injection molding, the mold has the advantages of lower equipment cost, stronger adaptability, good plasticity, and capability of molding products with complex undulating curves (or shapes), so that various blow molding equipment is frequently used for manufacturing plastic barrels in industrial production.

When the existing blow molding equipment is used for manufacturing a plastic barrel, a certain amount of softened plastic is extruded by an extruder to form a parison, the parison is placed in a cavity formed by a mold, compressed air is injected into the cavity to ensure that the plastic parison is blown to cling to the inner wall of the mold, and the plastic barrel is obtained after cooling and demolding. In this production process, because when blowing to plastics parison inside, plastics are in the softened state, and the temperature is higher, be difficult for fixing and sealing it, the compressed air part that leads to blowing in reveals away from the exit of parison, reduce shaping speed, moreover, in process of production, because the fixed singleness in position of blowing, make the product appear the inhomogeneous expansion that is similar to the blow ball is the same, the position thickness far away that often appears apart from the position of blowing is high, and the position thickness near apart from the position of blowing is low, plastic drum shaping thickness is inhomogeneous, the production quality of plastic drum has been reduced, the practicality that leads to production facility reduces.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the plastic bucket production equipment which is convenient to fix and based on the blow molding technology is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a plastic barrel production device convenient to fix based on blow molding technology comprises a base, an ejector rod, a controller, an air blowing mechanism, a sealing mechanism and two molding mechanisms, wherein each molding mechanism comprises a moving assembly, a mold and a vertical rod, two ends of each vertical rod are fixedly connected with the ejector rod and the base respectively, the moving assembly is arranged on the ejector rod and is in transmission connection with the mold, the controller is fixed above the base, the air blowing mechanism and the sealing mechanism are arranged below the mold, and a PLC is arranged in the controller;

the sealing mechanism comprises a lifting plate, a lifting assembly, an air bag, a fixing ring, a sleeve, a fixing pipe, a sealing plate and a spring, wherein the fixing ring and the sleeve are fixed above the lifting plate, the sleeve is positioned on the inner side of the fixing ring, the air bag is annular, the air bag is positioned between the fixing ring and the sleeve, the periphery of the air bag is fixed on the inner wall of the fixing ring, the fixing pipe is fixed below the lifting plate, the periphery of the sealing plate is hermetically connected with the inner wall of the fixing pipe, the sealing plate is connected with the bottom in the fixing pipe through the spring, the spring is in a compressed state, and the sealing plate is arranged above the base through the lifting assembly;

the mechanism of blowing includes translation subassembly, translation board, runner assembly, gas blow pipe, compressor and two shower nozzles, the translation board passes through the translation subassembly and sets up the top at the base, the bottom at the gas blow pipe is fixed to the compressor, and the both sides on the top of gas blow pipe are fixed respectively to two shower nozzles, the translation board passes through the runner assembly and is connected with the gas blow pipe, be equipped with the trompil on the lifter plate, the trompil is located the sheathed tube under, the internal diameter of trompil is the same with sheathed tube internal diameter, the periphery of gas blow pipe and the inner wall sealing connection of trompil, the compressor is connected with the PLC electricity.

Preferably, in order to drive the mold to move, the moving assembly comprises an air cylinder, a supporting rod and a sliding ring, the cylinder body of the air cylinder is fixed above the base, the top end of an air rod of the air cylinder is hinged with the mold through the supporting rod, the sliding ring is fixed above the mold, the sliding ring is sleeved on the supporting rod, and the air cylinder is electrically connected with the PLC.

Preferably, a stopper plate is provided inside the bottom of the mold to prevent the air bag from inflating into the mold.

Preferably, in order to control the sealing plate to move up and down, the lifting assembly comprises a first motor, a first connecting rod, a second connecting rod and a third connecting rod, the first motor is fixed above the base and electrically connected with the PLC, the first motor is in transmission connection with the first connecting rod, the first connecting rod is hinged to one end of the third connecting rod through the second connecting rod, and the other end of the third connecting rod is fixed below the sealing plate.

Preferably, in order to fix the moving direction of the third connecting rod, a plurality of limiting blocks are arranged at the opening of the fixed pipe, the limiting blocks are circumferentially and uniformly distributed on the inner wall of the fixed pipe, and the limiting blocks abut against the side face of the third connecting rod.

Preferably, in order to drive the translation plate to move up and down, the translation assembly comprises a second motor, a screw rod and a fixed rod, the second motor and the fixed rod are both fixed above the base, the second motor is electrically connected with the PLC, the second motor is in transmission connection with the bottom end of the screw rod, the screw rod and the fixed rod both penetrate through the translation plate, and a screw thread matched with the screw rod is arranged at the joint of the translation plate and the screw rod.

Preferably, in order to drive the blowing pipe to rotate, the rotating assembly comprises a third motor, a driving gear, a driven gear and a connecting unit, the third motor is fixedly connected with the translation plate, the third motor is electrically connected with the PLC, the third motor is in transmission connection with the driving gear, the driving gear is meshed with the driven gear, the driven gear is coaxially fixed on the blowing pipe, and the third motor is connected with the blowing pipe through the connecting unit.

Preferably, in order to realize the synchronous movement of the third motor and the air blowing pipe, the connecting unit comprises a sliding block and an annular sliding way, the sliding way is fixed on the periphery of the air blowing pipe, the sliding block is in sliding connection with the sliding way, and the sliding block is fixedly connected with the third motor.

Preferably, in order to reduce the resistance to rotation of the air blowing pipe, notches are formed in the upper side and the lower side of the sliding block, balls are arranged in the notches and matched with the notches, the centers of the balls are located in the notches, and the two balls abut against the inner walls of the upper side and the lower side of the sliding way respectively.

Preferably, in order to secure the driving force of the third motor, the third motor is a dc servo motor.

The plastic barrel production equipment based on the blow molding technology and convenient to fix has the advantages that after the sealing mechanism is used for sealing the close mold, the parison is fixed on the periphery of the sleeve, the reduction of the molding efficiency caused by air leakage in the air blowing process is prevented, in addition, the air blowing mechanism drives the spray head to rotate and change the height position, so that the spray head blows air from different direction angles, the thicknesses of all parts of the plastic barrel after being molded are uniform, the production quality of the plastic barrel is improved, and the practicability of the equipment is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural diagram of a plastic drum production facility based on blow molding technology for easy fixing according to the present invention;

FIG. 2 is a schematic structural diagram of a molding mechanism of the plastic bucket production equipment based on blow molding technology and convenient to fix, which is disclosed by the invention;

FIG. 3 is a schematic structural diagram of a sealing mechanism of the plastic bucket production equipment based on blow molding technology for facilitating fixing of the invention;

FIG. 4 is an enlarged view of portion A of FIG. 1;

in the figure: 1. the automatic forming machine comprises a base, 2 parts of ejector rods, 3 parts of a controller, 4 parts of a die, 5 parts of vertical rods, 6 parts of a lifting plate, 7 parts of an air bag, 8 parts of fixing rings, 9 parts of sleeves, 10 parts of fixing pipes, 11 parts of sealing plates, 12 parts of springs, 13 parts of translation plates, 14 parts of air blowing pipes, 15 parts of a compressor, 16 parts of a spray head, 17 parts of an air cylinder, 18 parts of supporting rods, 19 parts of a sliding ring, 20 parts of limiting plates, 21 parts of limiting blocks, 22 parts of a first motor, 23 parts of a first connecting rod, 24 parts of a second connecting rod, 25 parts of a third connecting rod, 26 parts of a second motor, 27 parts of a screw rod, 28 parts of a fixing rod, 29 parts of a third motor, 30 parts of driving gears, 31 parts.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1-2, a plastic barrel production device convenient to fix based on blow molding technology comprises a base 1, a top rod 2, a controller 3, an air blowing mechanism, a sealing mechanism and two molding mechanisms, wherein each molding mechanism comprises a moving assembly, a mold 4 and a vertical rod 5, two ends of each vertical rod 5 are respectively and fixedly connected with the top rod 2 and the base 1, the moving assembly is arranged on the top rod 2 and is in transmission connection with the mold 4, the controller 3 is fixed above the base 1, the air blowing mechanism and the sealing mechanism are arranged below the mold 4, and a PLC is arranged in the controller 3;

a PLC, i.e., a programmable logic controller, which employs a programmable memory for storing therein a program, executing instructions for user-oriented operations such as logic operation, sequence control, timing, counting, and arithmetic operation, and controlling various types of machines or production processes through digital or analog input/output, is essentially a computer dedicated for industrial control, has a hardware structure substantially the same as that of a microcomputer, and is generally used for data processing and instruction reception and output for realizing central control.

When an operator produces the plastic barrel, after a softened plastic parison is reversely buckled on the blowing mechanism, the controller 3 can be operated, the control equipment runs, the equipment drives the mold 4 to move along the axis of the ejector rod 2 through the moving assembly when in production, so that the two molds 4 are close to each other, the cavity formed by the mold 4 is sealed through the sealing mechanism, the parison is fixed on the blowing mechanism, then the blowing mechanism is started, compressed air is blown into the parison, and after the parison expands and leans against the inner wall of the mold 4, the parison can be molded through cooling, and the plastic barrel is manufactured.

As shown in fig. 3, the sealing mechanism includes a lifting plate 6, a lifting assembly, an air bag 7, a fixing ring 8, a sleeve 9, a fixing tube 10, a sealing plate 11 and a spring 12, the fixing ring 8 and the sleeve 9 are both fixed above the lifting plate 6, the sleeve 9 is located inside the fixing ring 8, the air bag 7 is annular, the air bag 7 is located between the fixing ring 8 and the sleeve 9, the periphery of the air bag 7 is fixed on the inner wall of the fixing ring 8, the fixing tube 10 is fixed below the lifting plate 6, the periphery of the sealing plate 11 is hermetically connected with the inner wall of the fixing tube 10, the sealing plate 11 is connected with the bottom inside the fixing tube 10 through the spring 12, the spring 12 is in a compressed state, and the sealing plate 11 is disposed above the base 1 through the lifting assembly;

after the two molds 4 approach each other and abut against each other, the PLC controls the lifting component to start to drive the sealing plate 11 to move upwards, the spring 12 above the sealing plate 11 is in a compressed state, so that the fixed pipe 10 and the lifting plate 6 move upwards simultaneously, after the lifting plate 6 abuts against the lower part of the molds 4, the sleeve 9 is positioned between the two molds 4 at the moment, the lifting component continues to control the sealing plate 11 to move upwards, the spring 12 is compressed, air in the fixed pipe 10 is pressed into the air bag 7, the air in the air bag 7 expands, the air bag 7 expands inwards due to the fact that the air bag 7 is fixed on the inner wall of the fixed ring 8, the bottom of the plastic parison abuts against the periphery of the sleeve 9, the parison is fixed above the sleeve 9 after the sealing of the cavities formed by the two parisons is realized, and air leakage from the parison when the blowing mechanism blows air into the parisons is avoided, thereby ensuring the plastic formed by the parison, improving the production efficiency and improving the practicability of the equipment.

As shown in fig. 1 and 4, the blowing mechanism includes a translation assembly, a translation plate 13, a rotation assembly, a blowing pipe 14, a compressor 15 and two nozzles 16, the translation plate 13 is disposed above the base 1 through the translation assembly, the compressor 15 is fixed at the bottom end of the blowing pipe 14, the two nozzles 16 are respectively fixed at two sides of the top end of the blowing pipe 14, the translation plate 13 is connected with the blowing pipe 14 through the rotation assembly, the lifting plate 6 is provided with an opening hole, the opening hole is located right below the sleeve 9, the inner diameter of the opening hole is the same as that of the sleeve 9, the periphery of the blowing pipe 14 is hermetically connected with the inner wall of the opening hole, and the compressor 15 is electrically connected with the PLC.

When the blowing mechanism operates, the PLC controls the compressor 15 to start, external air is introduced, after compression is carried out, the blowing pipe 14 is conveyed to the nozzle 16, compressed air is blown into the nozzle 16 towards the interior of a parison, the parison expands, meanwhile, the rotating assembly starts, the blowing pipe 14 is driven to rotate, the nozzle 16 on the top end of the blowing pipe 14 blows air to all positions inside the parison, furthermore, the PLC controls the translation assembly to start, the translation plate 13 is driven to move in the vertical lifting direction, the blowing pipe 14 is driven to move in the lifting direction through the rotating unit, the nozzle 16 can blow air from different height positions conveniently, the equal air pressure received by all positions inside the parison is guaranteed, the uniform thickness of all positions after the plastic barrel is formed is convenient to guarantee, the production quality of the plastic barrel is improved, and the practicability of the equipment is improved.

As shown in fig. 2, the moving assembly includes a cylinder 17, a supporting rod 18 and a sliding ring 19, a cylinder body of the cylinder 17 is fixed above the base 1, a top end of an air rod of the cylinder 17 is hinged to the mold 4 through the supporting rod 18, the sliding ring 19 is fixed above the mold 4, the sliding ring 19 is sleeved on the ejector rod 2, and the cylinder 17 is electrically connected to the PLC.

PLC control cylinder 17 starts, and control cylinder 17's gas pole carries out the lift removal, and cylinder 17's gas pole passes through branch 18 and acts on mould 4, drives mould 4 and removes, owing to establish on ejector pin 2 at the sliding ring 19 cover of mould 4 top for mould 4 carries out steady removal along the axis of ejector pin 2.

Preferably, a stopper plate 20 is provided inside the bottom of the mold 4 to prevent the airbag 7 from inflating into the mold 4. The limiting plate 20 is used for preventing the air bag 7 from expanding upwards, so that the air bag 7 is conveniently and intensively expanded towards the sleeve 9, and the softened plastic parison is fixed on the periphery of the sleeve 9.

As shown in fig. 3, the lifting assembly includes a first motor 22, a first connecting rod 23, a second connecting rod 24 and a third connecting rod 25, the first motor 22 is fixed above the base 1, the first motor 22 is electrically connected to the PLC, the first motor 22 is in transmission connection with the first connecting rod 23, the first connecting rod 23 is hinged to one end of the third connecting rod 25 through the second connecting rod 24, and the other end of the third connecting rod 25 is fixed below the sealing plate 11.

The PLC controls the first motor 22 to be started, the first connecting rod 23 is driven to rotate, the first connecting rod 23 acts on the third connecting rod 25 through the second connecting rod 24, the third connecting rod 25 is made to move up and down along the vertical direction, and then the sealing plate 11 is driven to move up and down.

Preferably, in order to fix the moving direction of the third connecting rod 25, a plurality of limiting blocks 21 are arranged at the opening of the fixed pipe 10, the limiting blocks 21 are circumferentially and uniformly distributed on the inner wall of the fixed pipe 10, and the limiting blocks 21 abut against the side surface of the third connecting rod 25.

The stopper 21 fixes the moving direction of the third link 25 and prevents the sealing plate 11 from being separated from the fixing tube 10 when moving downward.

As shown in fig. 1, the translation assembly includes a second motor 26, a screw rod 27 and a fixing rod 28, the second motor 26 and the fixing rod 28 are both fixed above the base 1, the second motor 26 is electrically connected with the PLC, the second motor 26 is in transmission connection with the bottom end of the screw rod 27, the screw rod 27 and the fixing rod 28 both pass through the translation plate 13, and a screw thread matching with the screw rod 27 is arranged at a connection position of the translation plate 13 and the screw rod 27.

The PLC controls the second motor 26 to be started, the screw rod 27 is driven to rotate, the screw rod 27 acts on the translation plate 13 through threads, the translation plate 13 is sleeved on the fixing rod 28, and the fixing rod 28 is fixed above the base 1, so that the moving direction of the translation plate 13 is fixed, and the translation plate 13 is lifted and moved along the axis of the fixing rod 28.

As shown in fig. 4, the rotating assembly includes a third motor 29, a driving gear 30, a driven gear 31 and a connecting unit, the third motor 29 is fixedly connected to the translation plate 13, the third motor 29 is electrically connected to the PLC, the third motor 29 is in transmission connection with the driving gear 30, the driving gear 30 is engaged with the driven gear 31, the driven gear 31 is coaxially fixed to the blowing pipe 14, and the third motor 29 is connected to the blowing pipe 14 through the connecting unit.

The PLC controls a third motor 29 fixed on the translation plate 13 to be started, so that a driving gear 30 is driven to rotate, the driving gear 30 acts on a driven gear 31 meshed with the driving gear, the driven gear 31 rotates, the air blowing pipe 14 is driven to rotate, and the third motor 29 and the air blowing pipe 14 keep synchronous lifting movement by utilizing a connecting unit.

Preferably, in order to realize the synchronous movement of the third motor 29 and the air blowing pipe 14, the connecting unit comprises a slide block 32 and an annular slide way, the slide way is fixed on the periphery of the air blowing pipe 14, the slide block 32 is connected with the slide way in a sliding way, and the slide block 32 is fixedly connected with the third motor 29.

Through the annular slide way fixed at the periphery of the air blowing pipe 14, the slide block 32 and the annular slide way can rotate relatively conveniently, and when the slide block 32 moves up and down along with the third motor 29, the slide block acts on the inner wall of the upper side or the lower side of the slide way, so that the air blowing pipe 14 is driven by the slide way to move up and down synchronously with the third motor 29.

Preferably, in order to reduce the resistance to the rotation of the blowing pipe 14, notches are formed in the upper and lower sides of the sliding block 32, balls 33 are arranged in the notches, the balls 33 are matched with the notches, the center of the ball 33 is located in the notches, and the two balls 33 respectively abut against the inner walls of the upper and lower sides of the slideway. When the air blow pipe 14 rotates, the annular slide way and the slide block 32 rotate relatively, and the balls 33 roll in the notches at the upper side and the lower side of the slide block 32, so that the resistance applied to the rotation of the slide way is reduced, and the rotation of the air blow pipe 14 is facilitated.

Preferably, the third motor 29 is a dc servo motor in order to ensure the driving force of the third motor 29 by utilizing the characteristic that the driving force of the dc servo motor is strong.

When the plastic barrel production equipment is used, a parison is reversely buckled on an air blowing pipe 14, then after two molds 4 are close to each other through a moving assembly, a sealing plate 11 is driven by a lifting assembly to move upwards, a lifting plate 6 is driven by a fixing pipe 10 to move upwards and is abutted against the lower part of the molds 4 to seal the inner parts of the cavities, then the sealing plate 11 moves upwards, so that air in the fixing pipe 10 is conveyed into an air bag 7, the air bag 7 expands, after the parison is fixed on a sleeve 9, a compressor 15 is started, compressed air is conveyed to a nozzle 16 through the air blowing pipe 14, the nozzle 16 blows air to the interior of the parison, when the parison expands, the translation plate 13 is driven by a translation assembly to move upwards and downwards, so that the translation plate 13 drives the air blowing pipe 14 to move upwards and downwards through a rotation assembly, and the air blowing pipe 14 is driven by the rotation assembly to rotate, so that the nozzle 16 sprays compressed air, the thickness of the inner wall of the plastic barrel after molding is ensured to be uniform, and the production quality of the plastic barrel is improved, so that the practicability of the equipment is improved.

Compared with the prior art, this plastic drum production facility convenient to it is fixed based on blow molding technique utilizes sealing mechanism to the mould 4 sealed back that is close to, fix the parison in the periphery of sleeve pipe 9, prevent to blow the in-process and lead to the shaping efficiency to reduce because of gas leakage, moreover, drive shower nozzle 16 through the mechanism of blowing and rotate and change the high position, make shower nozzle 16 blow from the direction angle of difference, make the even unanimity of thickness everywhere after the plastic drum shaping, improve plastic drum production quality, thereby the practicality of equipment has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The plastic barrel production equipment convenient to fix based on the blow molding technology is characterized by comprising a base (1), an ejector rod (2), a controller (3), a blowing mechanism, a sealing mechanism and two molding mechanisms, wherein each molding mechanism comprises a moving assembly, a mold (4) and a vertical rod (5), two ends of each vertical rod (5) are fixedly connected with the ejector rod (2) and the base (1) respectively, the moving assembly is arranged on the ejector rod (2), the moving assembly is in transmission connection with the mold (4), the controller (3) is fixed above the base (1), the blowing mechanism and the sealing mechanism are arranged below the mold (4), and a PLC is arranged in the controller (3);

the sealing mechanism comprises a lifting plate (6), a lifting assembly, an air bag (7), a fixing ring (8), a sleeve (9), a fixing pipe (10), a sealing plate (11) and a spring (12), wherein the fixing ring (8) and the sleeve (9) are fixed above the lifting plate (6), the sleeve (9) is positioned on the inner side of the fixing ring (8), the air bag (7) is annular, the air bag (7) is positioned between the fixing ring (8) and the sleeve (9), the periphery of the air bag (7) is fixed on the inner wall of the fixing ring (8), the fixing pipe (10) is fixed below the lifting plate (6), the periphery of the sealing plate (11) is in sealing connection with the inner wall of the fixing pipe (10), the sealing plate (11) is connected with the bottom in the fixing pipe (10) through the spring (12), and the spring (12) is in a compressed state, the sealing plate (11) is arranged above the base (1) through a lifting assembly;

the mechanism of blowing includes translation subassembly, translation board (13), rotating assembly, gas blow pipe (14), compressor (15) and two shower nozzles (16), translation board (13) set up the top in base (1) through the translation subassembly, the bottom at gas blow pipe (14) is fixed in compressor (15), and two shower nozzles (16) are fixed respectively in the both sides on the top of gas blow pipe (14), translation board (13) are connected with gas blow pipe (14) through rotating assembly, be equipped with the trompil on lifter plate (6), the trompil is located sleeve pipe (9) under, the internal diameter of trompil is the same with the internal diameter of sleeve pipe (9), the periphery of gas blow pipe (14) is connected with the inner wall sealing of trompil, compressor (15) are connected with the PLC electricity.

2. The plastic barrel production equipment convenient for fixation based on blow molding technology as claimed in claim 1, wherein the moving assembly comprises a cylinder (17), a support rod (18) and a sliding ring (19), the cylinder body of the cylinder (17) is fixed above the base (1), the top end of the gas rod of the cylinder (17) is hinged with the mold (4) through the support rod (18), the sliding ring (19) is fixed above the mold (4), the sliding ring (19) is sleeved on the top rod (2), and the cylinder (17) is electrically connected with the PLC.

3. Plastic bucket production equipment facilitating fixing based on blow molding technology according to claim 1, characterized in that the inside of the bottom of the mold (4) is provided with a limit plate (20).

4. The plastic bucket production equipment facilitating fixing based on blow molding technology as claimed in claim 1, wherein the lifting assembly comprises a first motor (22), a first connecting rod (23), a second connecting rod (24) and a third connecting rod (25), the first motor (22) is fixed above the base (1), the first motor (22) is electrically connected with the PLC, the first motor (22) is in transmission connection with the first connecting rod (23), the first connecting rod (23) is hinged with one end of the third connecting rod (25) through the second connecting rod (24), and the other end of the third connecting rod (25) is fixed below the sealing plate (11).

5. The plastic bucket production equipment facilitating fixing based on blow molding technology as claimed in claim 4, characterized in that the opening of the fixed tube (10) is provided with a plurality of limiting blocks (21), the limiting blocks (21) are circumferentially and uniformly distributed on the inner wall of the fixed tube (10), and the limiting blocks (21) are abutted against the side surface of the third connecting rod (25).

6. The plastic bucket production equipment facilitating fixing based on blow molding technology as claimed in claim 1, wherein the translation assembly comprises a second motor (26), a screw rod (27) and a fixing rod (28), the second motor (26) and the fixing rod (28) are both fixed above the base (1), the second motor (26) is electrically connected with the PLC, the second motor (26) is in transmission connection with the bottom end of the screw rod (27), the screw rod (27) and the fixing rod (28) both penetrate through the translation plate (13), and the connection part of the translation plate (13) and the screw rod (27) is provided with a thread matched with the screw rod (27).

7. The plastic bucket production equipment convenient for fixing based on blow molding technology as claimed in claim 1, wherein the rotating assembly comprises a third motor (29), a driving gear (30), a driven gear (31) and a connecting unit, the third motor (29) is fixedly connected with the translation plate (13), the third motor (29) is electrically connected with the PLC, the third motor (29) is in transmission connection with the driving gear (30), the driving gear (30) is meshed with the driven gear (31), the driven gear (31) is coaxially fixed on the blow pipe (14), and the third motor (29) is connected with the blow pipe (14) through the connecting unit.

8. The plastic tub production facility facilitating fixing based on blow molding technology as claimed in claim 7, characterized in that the connection unit includes a slider (32) and an annular slide, the slide is fixed on the outer circumference of the blow pipe (14), the slider (32) is slidably connected with the slide, and the slider (32) is fixedly connected with the third motor (29).

9. The plastic bucket production equipment facilitating fixing based on blow molding technology according to claim 8, wherein the upper and lower sides of the sliding block (32) are provided with notches, the notches are internally provided with balls (33), the balls (33) are matched with the notches, the centers of the balls (33) are positioned in the notches, and the two balls (33) respectively abut against the inner walls of the upper and lower sides of the slideway.

10. Plastic bucket production plant facilitating the fixing based on blow-moulding technology, as claimed in claim 7, characterized in that said third motor (29) is a direct current servomotor.