CN114953331B - Injection machine for molding rain boot vamp and production process thereof - Google Patents

Injection machine for molding rain boot vamp and production process thereof Download PDF

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Publication number
CN114953331B
CN114953331B CN202210575200.4A CN202210575200A CN114953331B CN 114953331 B CN114953331 B CN 114953331B CN 202210575200 A CN202210575200 A CN 202210575200A CN 114953331 B CN114953331 B CN 114953331B
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China
Prior art keywords
wheel
belt
conveying
transmission
guide
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CN202210575200.4A
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CN114953331A (en
Inventor
王生明
曾和平
严文军
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Zhejiang Hehe Plastic Co ltd
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Zhejiang Hehe Plastic Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/74—Heating or cooling of the injection unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/50—Footwear, e.g. shoes or parts thereof
    • B29L2031/505—Uppers

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses an injection machine for molding rain boot vamps, which comprises a feed hopper, a feed pipe and a rack. A conveying shaft for conveying injection molding materials is arranged in the feeding pipe, a first transmission wheel with variable wheel diameter is arranged on the conveying shaft, a second transmission wheel matched with the first transmission wheel is arranged on the rack, and the first transmission wheel and the second transmission wheel are connected through a transmission belt with variable length; the injection machine is characterized in that a heater capable of heating materials in the pipe is arranged on the feeding pipe, a heat conducting rod is arranged on the heater, a temperature control push rod matched with the heat conducting rod is arranged on the transmission belt, a first connecting belt and a second connecting belt are arranged on the transmission belt, and the first connecting belt and the second connecting belt are connected through the temperature control push rod.

Description

Injection machine for molding rain boot vamp and production process thereof
Technical Field
The invention relates to the technical field of injection machines, in particular to an injection machine for molding a rain boot vamp and a production process thereof.
Background
An injection molding machine, also known as an injection machine, is a main molding device for making thermoplastic plastics or thermosetting plastics into plastic products with various shapes by using a plastic molding die. The rain shoes are usually manufactured by an injection machine in the production process to form the upper surfaces of the rain shoes, the rain shoes are manufactured by thermoplastic plastics of different materials to form the rain shoes of different grades in the production process, when the injection machine performs injection molding, the plastic and the particles of different materials have different requirements on the injection temperature, some materials need to be heated to a higher temperature to enable the flowability of the plastic and the particles to be better, and some materials can be injected without too high temperature.
The existing injection machine usually adopts constant speed to carry out the impulse type injection to the plastics after the hot melt, however, when injecting the plastics that flow is higher after heating to high temperature, if not promoting speed then easily lead to the plastics after the heating to cool off because of the shaping time is long in the die cavity, reduced injection moulding's quality, plastics heating temperature is higher during hot melt simultaneously, and it is more that its former granule inside has the air that the gas pocket produced, if do not promote air extraction speed this moment and can lead to having more gas pockets in the product after moulding plastics.
Disclosure of Invention
The invention provides an injection machine for molding a rain boot vamp and a production process thereof, aiming at the defects in the prior art.
In order to solve the technical problems, the invention is solved by the following technical scheme: an injection machine for molding rain boot vamps comprises a feed hopper, a feeding pipe and a rack.
In the above scheme, preferably, a conveying shaft for conveying the injection molding material is arranged in the feeding pipe, a first transmission wheel with a variable wheel diameter is arranged on the conveying shaft, a second transmission wheel matched with the first transmission wheel is arranged on the rack, and the first transmission wheel and the second transmission wheel are connected through a transmission belt with a variable length;
the feeding pipe is provided with a heater capable of heating materials in the pipe, the heater is provided with a heat conducting rod, the transmission belt is provided with a temperature control push rod matched with the heat conducting rod, the transmission belt is provided with a first connecting belt and a second connecting belt, and the first connecting belt and the second connecting belt are connected through the temperature control push rod.
In the above scheme, preferably, the conveying shaft is a spiral conveying shaft, one end of the conveying shaft is arranged in the feeding pipe, the other end of the conveying shaft penetrates through the rack and is connected with the first driving wheel, a shaft seat matched with the conveying shaft is arranged on the rack, and a motor connected with the second driving wheel is arranged on the rack.
In the above scheme, preferably, first drive wheel includes the wheel core and evenly locates on the wheel core and to keeping away from a plurality of and conveyer belt matched with conveying blocks that the radiation of wheel core department set up, be equipped with the slide bar on the conveying block, be equipped with first spring between conveying block and wheel core.
In the above scheme, preferably, a first guide disc is fixedly arranged on the wheel core, the conveying block is provided with a guide rod, and the first guide disc is provided with a guide groove which radiates outwards along the center of the first guide disc.
In the above scheme, preferably, the first guide disc is rotatably provided with a second guide disc, the second guide disc is provided with a rotating groove matched with the guide rod, and the rotating groove inclines from one side of the guide groove to the other side of the guide groove from top to bottom.
In the above scheme, preferably, a T-shaped groove is formed in the first connecting belt, a T-shaped belt matched with the T-shaped groove is formed in the second connecting belt, the temperature control push rod is arranged on the first connecting belt, a push plate is arranged at the movable end of the temperature control push rod, the push plate is connected with the T-shaped belt through a pull rope, and a pushing groove matched with the push plate is formed in the first connecting belt.
In the above scheme, preferably, the conveying shaft is provided with a cam, the frame is provided with an air extractor matched with the cam, the feeding pipe is provided with an air extracting hole connected with the air extractor, and a first one-way valve is arranged between the air extracting hole and the air extractor.
In the above scheme, preferably, the air extractor includes a base, an air bag, and a cam plate that is matched with the cam, the cam plate is slidably disposed on the base through a plurality of first rods, a second spring is disposed between the base and the cam plate, and the air bag is provided with an air extracting tube connected to the air extracting hole.
In the above scheme, preferably, the airbag is provided with an exhaust pipe, and the exhaust pipe is provided with a second one-way valve.
In the above scheme, preferably, the production process of the injection machine for molding the rain boot upper comprises the following steps: when the vamp of the rain boot is molded and injected, the rain boot made of different materials adopts different injection molding temperatures; s1: the material enters the feeding pipe through the feeding hopper, and then the conveying shaft and the heater are started to heat the material in the feeding pipe; s2: different materials adopt different temperatures, a heat conducting rod of the heater transmits heating temperature to the temperature control push rod, the push-out length of the push rod is changed by the temperature control push rod according to different temperatures, the T-shaped belt slides in the T-shaped groove at the moment, the higher the temperature is, the more the push plate of the temperature control push rod is pushed out, the longer the push plate pulls the T-shaped belt to slide in the T-shaped groove, and the shorter the conveyor belt is; s3: after the conveyor belt is shortened, because the distance between the first transmission wheel and the wheel center of the second transmission wheel is unchanged, the conveying block slides to the wheel center to compress the first spring, the rest slide blocks drive the second guide disc to rotate through the guide grooves on the first guide disc to enable the rest slide blocks to synchronously slide, the wheel diameter of the conveyor belt in contact with the first transmission wheel is reduced, and the rotating speed of the conveying shaft is increased; s4: after the rotating speed of the conveying shaft is increased, the matching frequency of the cam and the cam plate is also increased, so that the air extraction rate of the air extraction device is increased, and at the moment, air generated in the feeding pipe after the temperature is increased is rapidly extracted and is placed in the air to be injected into the mold.
The beneficial effects of the invention are: the invention provides an injection machine for synchronously adjusting the injection speed of materials according to different injection temperatures of different materials, so that the injection machine can be suitable for molding and injection of different rain boot vamps, the injection quality of the rain boot vamps is improved, meanwhile, gas in the materials can be sucked before injection, air holes are prevented from being generated during injection of the materials, and the quality of injection products is greatly improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
FIG. 3 is a cross-sectional connection diagram of the first transmission wheel and the second transmission wheel of the present invention.
FIG. 4 is a schematic view of the enlarged structure of part A of the present invention.
FIG. 5 is a schematic view of the construction of the belt of the present invention.
Fig. 6 is a schematic view of the exploded structure of the first driving wheel according to the present invention.
FIG. 7 is a schematic view of the structure of the air extractor of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1-7, an injection machine for molding rain boot uppers comprises a feed hopper 1, a feeding pipe 2 and a frame 3, wherein the feed hopper 1 is fixedly arranged above the frame 3, and the feeding pipe 2 is arranged at an outlet at the lower end of the feed hopper 1 and is communicated with the feed hopper 1, which is the prior art.
As shown in fig. 2, the right end of the feeding pipe 2 is connected to a mold, so that a material in the feeding hopper 1 can be injected into a mold cavity after being subjected to hot melting, a heater 8 capable of heating the material in the feeding pipe 2 is arranged on the outer wall of the right end of the feeding pipe 2, the heater 8 is preferably annular, when the material passes through the heater 8, the material can be melted under the action of the heater 8, a heat conducting rod 9 is arranged on the heater 8, the heat conducting rod 9 is used for detecting the heating temperature of the heater 8, a conveying shaft 4 penetrates through the feeding pipe 2, the conveying shaft 4 is preferably a spiral conveying shaft, the conveying shaft 4 rotates to convey the material from an outlet at the lower end of the feeding hopper 1 to a position where the right end of the feeding pipe 2 is communicated with the mold, a first transmission wheel 5 is fixedly arranged after the left end of the conveying shaft 4 penetrates through the rack 3, a shaft seat 13 matched with the conveying shaft 4 is arranged on the rack 3, and the shaft seat 13 is preferably a bearing seat, so that the conveying shaft 4 can rotate.
First drive wheel 5 includes wheel core 21 and evenly locates the conveying piece 22 on the wheel core 21, conveying piece 22 is preferred evenly to set up 4-8 groups around wheel core 21 center, conveying piece 22 is the arc piece, and conveying piece 22 keeps away from and is equipped with the profile of tooth on the cambered surface of wheel core 21 one side, conveying piece 22 has set firmly slide bar 23 on being close to wheel core 21 one side cambered surface, slide bar 23 slides and locates on the wheel core 21 and slide bar 23 axis extension line and the coincidence of wheel core 21 center, and conveying piece 22 is by wheel core 21 center to keeping away from the radiation of wheel core 21 direction slip promptly, be equipped with first spring 24 between conveying piece 22 and the wheel core 21 outer fringe face, first spring 24 cover is located on slide bar 23 and both ends link to each other with wheel core 21 surface and conveying piece 22 respectively.
Set firmly first guide disc 25 on the wheel core 21, first guide disc 25 is located on the wheel core 21 side end face, conveying block 22 has set firmly guide bar 26 to first guide disc 25 one side perpendicular extension, be equipped with on the first guide disc 25 with guide bar 26 matched with guide way 27, the outside radiation in first guide disc 25 centre of a circle is followed to guide way 27, guide bar 26 can slide in guide way 27 after wearing to establish guide way 27, when conveying block 22 slides on wheel core 21 promptly, guide bar 26 slides in guide way 27 and has the guide effect to conveying block 22.
The last second guide disc 28 that rotates of first guide disc 25 is equipped with, be equipped with on the second guide disc 28 with guide bar 26 matched with rotation groove 29, rotation groove 29 evenly sets up around the second guide disc 28 centre of a circle, and its quantity is unanimous with the conveying piece 22 quantity that sets up, as shown in fig. 6, rotation groove 29 inclines to the opposite side from top to bottom by guide way 27 one side, namely rotation groove 29 is the chute, and when single conveying piece 22 slided on wheel core 21, can drive all the other conveying pieces 22 and pass through rotation groove 29 and the synchronous slip of guide way 27 cooperation, makes each conveying piece 22 apart from the distance of wheel core 21 the same all the time, also evenly sets up conveying piece 22 and constitutes a changeable first drive wheel 5 of outer lane diameter.
The automatic conveying device is characterized in that a second driving wheel 6 matched with the first driving wheel 5 is arranged on the rack 3, the second driving wheel 6 is arranged on a motor 14, the motor 14 is fixedly arranged at the bottom of the rack 3, namely the motor 14 can drive the second driving wheel 6 to rotate, the first driving wheel 5 is connected with the second driving wheel 6 through a conveying belt 7, namely the second driving wheel 6 can convey power to the first driving wheel 5 through the conveying belt 7 to enable the conveying shaft 4 to rotate, and the conveying belt 7 is coated on a conveying block 22 of the first driving wheel 5.
Be equipped with first connecting band 11 and second connecting band 12 on drive belt 7, but first connecting band 11 and second connecting band 12 sliding connection make the perimeter of drive belt 7 variable, specifically, be equipped with T type groove 31 on the first connecting band 11, be equipped with T type area 32 on the second connecting band 12, insert T type area 32 and make drive belt 7 connect into complete belt in T type groove 31, when T type area 32 slides in T type groove 31, can make the perimeter of drive belt 7 variable.
The outer surface of the first connecting belt 11 is provided with a temperature control push rod 10 matched with the heat conducting rod 9, the heat conducting rod 9 can change the pushing length of the temperature control push rod 10 according to the temperature change of the heater 8, the temperature control push rod 10 is a push rod which changes the pushing length according to the temperature change, the temperature control push rod 10 comprises a fixed end and a pushing end, the fixed end is rotatably arranged on the outer surface of the first connecting belt 11, the end part of the pushing end is provided with a push plate 33, the push plate 33 is arranged in the T-shaped groove 31 towards the inner surface of the first connecting belt 11 in a penetrating mode, and the first connecting belt 11 is provided with a pushing groove 35 matched with the push plate 33.
A pull rope 34 connected with the T-shaped belt 32 is fixedly arranged on one side, close to the T-shaped belt 32, of the push plate 33, when the temperature of the temperature control push rod 10 changes, the temperature control push rod 10 can drive the T-shaped belt 32 to slide in the T-shaped groove 31, the higher the temperature of the heat conduction rod 9 is, the longer the push length of the temperature control push rod 10 is, the longer the sliding distance of the T-shaped belt 32 in the T-shaped groove 31 is, the shorter the whole circumference of the transmission belt 7 is, at this time, the diameter of the wheel of the second transmission wheel 6 is unchanged, the shorter the circumference of the transmission belt 7 is, so that the transmission block 22 on the first transmission wheel 5 compresses the first spring 24 due to the shortening of the circumference of the transmission belt 7, so that the distance of each transmission block 22 on the first transmission wheel 5 from the center of the wheel core 21 is, namely, the diameter of the contact part between the first transmission wheel 5 and the transmission belt 7 is reduced, at this time, the rotating speed of the first transmission wheel 5 is increased due to the constant rotating speed of the motor 14, namely, the higher the heating temperature of the heater 8 is, the higher the rotating speed of the first transmission wheel 5 driving the transmission shaft 4 is, and the speed of the material pushed into the mold is increased.
As shown in fig. 2, the cam 41 is fixedly disposed at the left end of the conveying shaft 4, the air extractor matched with the cam 41 is disposed on the side wall of the left side of the frame 3, the air extractor includes a base 51, an air bag 52 and a cam plate 53 matched with the cam 41, the base 51 is fixedly disposed on the side wall of the left side of the frame 3, the cam plate 53 is slidably disposed under the base 51 through a plurality of first rods 54, a second spring 55 is disposed between the base 51 and the cam plate 53, preferably, the second spring 55 is sleeved on the first rods 54, two ends of the second spring are respectively connected with the base 51 and the cam plate 53, and the air bag 52 is disposed between the cam plate 53 and the base 51.
As shown in fig. 2, a suction hole 42 is provided at a side of the right end of the feeding pipe 2 close to the mold, a suction pipe 56 connected to the suction hole 42 is provided on the airbag 52, a first check valve 43 is provided between the suction hole 42 and the suction pipe 56, and the first check valve 43 flows from the suction hole 42 on the feeding pipe 2 to the airbag 52, that is, when the airbag is inflated, the suction pipe 56 can suck the gas in the feeding pipe 2 into the airbag 52 through the first check valve 43.
The air bag 52 is provided with an exhaust pipe 57, the exhaust pipe 57 is provided with a second one-way valve 58, the flow direction of the second one-way valve 58 is from the inside of the air bag 52 to the outside through the second one-way valve 58, namely, when the air bag 52 is compressed, the gas in the air bag 52 is discharged outside through the second one-way valve 58, the rotating speed of the cam 41 is increased along with the increasing of the rotating speed of the conveying shaft 4, when the rotating speed of the cam 41 is increased, the contact frequency of the cam 41 and the cam plate 53 is increased, the repeated compression frequency of the air bag 52 is also increased, and the frequency of sucking the gas in the feeding pipe 2 is correspondingly increased.
The production process of the injection machine for molding the rain boot vamp comprises the following steps: when the vamp of the rain boot is molded and injected, the rain boot made of different materials adopts different injection molding temperatures; s1: the material enters the feeding pipe 2 through the feeding hopper 1, then the heater 8 is started to heat the front end of the feeding pipe 2, the conveying shaft 4 rotates at the same time, the spiral conveying shaft conveys the material from the feeding hopper 1 to the front end of the feeding pipe 2, and the heated hot-melt material is squeezed into a mold after the conveying is continued; s2: different materials adopt different temperatures, the heat conducting rod 9 of the heater 8 transmits the heating temperature to the temperature control push rod 10, the push-out length of the push rod is changed by the temperature control push rod 10 according to different temperatures, at the moment, the T-shaped belt 32 slides in the T-shaped groove 31, the higher the temperature is, the more the push plate 33 of the temperature control push rod 10 is pushed out, the longer the push plate 33 pulls the T-shaped belt 32 to slide in the T-shaped groove 31, and the shorter the conveyor belt 7 is; s3: after the conveyor belt 7 is shortened, because the distance between the wheel centers of the first drive wheel 5 and the second drive wheel 6 is unchanged, the outer diameter of the second drive wheel 6 is also unchanged, at the moment, the conveying blocks 22 slide to the center of the wheel center 21 under the pressure of the conveyor belt 7 to compress the first spring 24, the rest conveying blocks 22 drive the second guide disc 28 to rotate through the guide grooves 27 on the first guide disc 25 to enable the rest conveying blocks 22 to slide synchronously, the wheel diameter of the conveyor belt 7 contacted with the first drive wheel 5 is reduced, and the rotating speed of the conveying shaft 4 is increased; s4: after the rotating speed of the conveying shaft 4 is increased, the matching times of the cam 41 and the cam plate 53 are also increased, so that the air extraction rate of the air extraction device is increased, and at the moment, air generated after the temperature in the feeding pipe 2 is increased is rapidly extracted, so that the air is prevented from being injected into the mold.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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.

Claims (3)

1. The utility model provides an injection machine for rain shoes vamp is fashioned, includes feeder hopper (1), conveying pipe (2) and frame (3), its characterized in that: a conveying shaft (4) used for conveying injection molding materials is arranged in the feeding pipe (2), a first transmission wheel (5) with variable wheel diameter is arranged on the conveying shaft (4), a second transmission wheel (6) matched with the first transmission wheel (5) is arranged on the rack (3), and the first transmission wheel (5) is connected with the second transmission wheel (6) through a transmission belt (7) with variable length;
the feeding pipe (2) is provided with a heater (8) capable of heating materials in the pipe, the heater (8) is provided with a heat conducting rod (9), the driving belt (7) is provided with a temperature control push rod (10) matched with the heat conducting rod (9), the driving belt (7) is provided with a first connecting belt (11) and a second connecting belt (12), and the first connecting belt (11) and the second connecting belt (12) are connected through the temperature control push rod (10);
the conveying shaft (4) is a spiral conveying shaft, one end of the conveying shaft (4) is arranged in the feeding pipe (2), the other end of the conveying shaft penetrates through the rack (3) and is connected with a first driving wheel (5), a shaft seat (13) matched with the conveying shaft (4) is arranged on the rack (3), and a motor (14) connected with the second driving wheel (6) is arranged on the rack (3);
the first transmission wheel (5) comprises a wheel core (21) and a plurality of transmission blocks (22) which are uniformly arranged on the wheel core (21) and are radially arranged away from the wheel core (21) and matched with the transmission belt (7), sliding rods (23) are arranged on the transmission blocks (22), a first spring (24) is arranged between each transmission block (22) and the wheel core (21), the sliding rods (23) are sleeved with the first springs (24), and two ends of each first spring are respectively connected with the outer surface of the wheel core (21) and the transmission blocks (22);
a first guide disc (25) is fixedly arranged on the wheel core (21), a guide rod (26) is arranged on the conveying block (22), a guide groove (27) which radiates outwards along the circle center of the first guide disc (25) is formed in the first guide disc (25), and the guide rod (26) slides in the guide groove (27) to guide the conveying block (22);
the first guide disc (25) is provided with a second guide disc (28) in a rotating mode, the second guide disc (28) is provided with a rotating groove (29) matched with the guide rod (26), the rotating groove (29) inclines from one side of the guide groove (27) to the other side from top to bottom, and when a single conveying block (22) slides on the wheel core (21), the other conveying blocks (22) can be driven to synchronously slide through the matching of the rotating groove (29) and the guide groove (27), so that the distance between each conveying block (22) and the wheel core (21) is always the same;
a T-shaped groove (31) is formed in the first connecting belt (11), a T-shaped belt (32) matched with the T-shaped groove (31) is arranged on the second connecting belt (12), the temperature control push rod (10) is arranged on the first connecting belt (11), a push plate (33) is arranged at the movable end of the temperature control push rod (10), the push plate (33) is connected with the T-shaped belt (32) through a pull rope (34), a push groove (35) matched with the push plate (33) is formed in the first connecting belt (11), and when the T-shaped belt (32) slides in the T-shaped groove (31), the circumference of the driving belt (7) can be changed;
a cam (41) is arranged on the conveying shaft (4), an air extractor matched with the cam (41) is arranged on the rack (3), an air extracting hole (42) connected with the air extractor is arranged on the feeding pipe (2), and a first one-way valve (43) is arranged between the air extracting hole (42) and the air extractor;
the air extracting device comprises a base (51), an air bag (52) and a cam plate (53) matched with a cam (41), the cam plate (53) is arranged on the base (51) in a sliding mode through a plurality of first rod pieces (54), a second spring (55) is arranged between the base (51) and the cam plate (53), and an air extracting pipe (56) connected with an air extracting hole (42) is arranged on the air bag (52).
2. An injection machine for molding a rain shoe upper according to claim 1, wherein: an exhaust pipe (57) is arranged on the air bag (52), and a second one-way valve (58) is arranged on the exhaust pipe (57).
3. A process for producing an injection machine for molding a rain boot upper according to claim 2, which comprises the steps of: when the upper of the rain boot is molded and injected, rain boots made of different materials adopt different injection molding temperatures; s1: the material enters the feeding pipe through the feeding hopper, and then the conveying shaft and the heater are started to heat the material in the feeding pipe; s2: different materials adopt different temperatures, a heat conducting rod of the heater transmits heating temperature to the temperature control push rod, the push-out length of the push rod is changed by the temperature control push rod according to different temperatures, the T-shaped belt slides in the T-shaped groove at the moment, the higher the temperature is, the more the push plate of the temperature control push rod is pushed out, the longer the push plate pulls the T-shaped belt to slide in the T-shaped groove, and the shorter the conveyor belt is; s3: after the conveyor belt is shortened, because the distance between the wheel centers of the first transmission wheel and the second transmission wheel is unchanged, the conveying blocks slide to the wheel center to compress the first spring, the other conveying blocks drive the second guide disc to rotate through the guide grooves on the first guide disc to enable the other conveying blocks to slide synchronously, the wheel diameter of the conveyor belt in contact with the first transmission wheel is reduced, and the rotating speed of the conveying shaft is increased; s4: the matching frequency of the cam and the cam plate is also increased after the rotating speed of the conveying shaft is increased, so that the air extraction rate of the air extraction device is increased, and air generated in the feeding pipe after the temperature is increased is rapidly extracted, so that the air is prevented from being injected into the die.
CN202210575200.4A 2022-05-25 2022-05-25 Injection machine for molding rain boot vamp and production process thereof Active CN114953331B (en)

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Application Number Priority Date Filing Date Title
CN202210575200.4A CN114953331B (en) 2022-05-25 2022-05-25 Injection machine for molding rain boot vamp and production process thereof

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Application Number Priority Date Filing Date Title
CN202210575200.4A CN114953331B (en) 2022-05-25 2022-05-25 Injection machine for molding rain boot vamp and production process thereof

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CN114953331A CN114953331A (en) 2022-08-30
CN114953331B true CN114953331B (en) 2022-12-20

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