CN112721114A - High-molecular rubber tire rapid thermal forming machine - Google Patents

High-molecular rubber tire rapid thermal forming machine Download PDF

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Publication number
CN112721114A
CN112721114A CN202011490596.XA CN202011490596A CN112721114A CN 112721114 A CN112721114 A CN 112721114A CN 202011490596 A CN202011490596 A CN 202011490596A CN 112721114 A CN112721114 A CN 112721114A
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CN
China
Prior art keywords
sides
workbench
rubber tire
clamping
thermoforming machine
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Pending
Application number
CN202011490596.XA
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Chinese (zh)
Inventor
陈嘉惠
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Individual
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Individual
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Priority to CN202011490596.XA priority Critical patent/CN112721114A/en
Publication of CN112721114A publication Critical patent/CN112721114A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/30Moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/30Moulds
    • B29C51/38Opening, closing or clamping means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26Component parts, details or accessories; Auxiliary operations
    • B29C51/42Heating or cooling
    • B29C51/421Heating or cooling of preforms, specially adapted for thermoforming
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00Pneumatic or solid tyres or parts thereof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

The invention relates to a rapid thermoforming machine, in particular to a rapid thermoforming machine for a high polymer rubber tire. The technical problem to be solved is as follows: the rapid thermoforming machine for the high polymer rubber tire can realize thermoforming and cooling solidification. The high-polymer rubber tire rapid thermal forming machine comprises a workbench and a hydraulic cylinder, wherein the upper part of the workbench is connected with the hydraulic cylinder; the hydraulic cylinder is connected with the heating mechanism; the top of the working table is connected with an extrusion mechanism. Through the cooperation between extrusion mechanism and the heating mechanism, can make the tire by the extrusion fixed, can carry out thermoforming to the tire simultaneously, can improve people's work efficiency like this.

Description

High-molecular rubber tire rapid thermal forming machine
Technical Field
The invention relates to a rapid thermoforming machine, in particular to a rapid thermoforming machine for a high polymer rubber tire.
Background
One of the main parts of an automobile is a component which is only contacted with the road surface when the tire is used, and the component is matched with a wheel rim to be used for tasks such as automobile driving, turning, shock absorption, braking, control and the like. The tire mold is one of the most critical forming devices for tire processing, and plays a role in the quality and appearance of the tire.
Tires are often used under complex and severe conditions, which are subjected to various deformations, loads, forces and high and low temperature effects during driving, and therefore must have high load-bearing, traction and cushioning properties. At the same time, high abrasion resistance and flexibility resistance, and low rolling resistance and heat build-up are also required. At present, a hot melting method is usually used for manufacturing tires, the tires are heated and molded firstly and then solidified, the conventional equipment can only realize one operation, heating or cooling, the operation is complex, and the working efficiency of people is difficult to improve, so that a high-molecular rubber tire rapid thermoforming machine capable of realizing thermoforming firstly and then cooling and solidifying is developed at present.
Disclosure of Invention
In order to overcome the defects that the prior equipment can only realize one operation, heating or cooling, the operation is complex and the work efficiency of people is difficult to improve, the technical problem to be solved is that: the rapid thermoforming machine for the high polymer rubber tire can realize thermoforming and cooling solidification.
The technical scheme of the invention is as follows: a high-molecular rubber tire rapid thermal forming machine comprises:
the upper part of the workbench is connected with the hydraulic cylinder;
the hydraulic cylinder is connected with the heating mechanism;
the top of the working table is connected with an extrusion mechanism.
Further, the extrusion mechanism includes:
the four sides of the workbench are connected with the sliding blocks in a sliding manner;
the right side mold is connected between the slide blocks on the front side;
the left side die is connected between the slide blocks on the rear side;
the first fixture block is arranged on each of the two sides of the right side die and the left side die;
the concave clamping plates are connected to two sides of the part of the heating mechanism;
the internal mold is connected to the heating mechanism.
Further, the heating mechanism includes:
the bottom of the hydraulic cylinder is connected with a second heat-conducting plate which is connected with the concave clamping plate and the inner mold;
the four sides of the second heat-conducting plate are connected with the first heat-conducting plate;
the heating pipe is arranged at the bottom of the second heat conducting plate and is positioned in the middle of the inner mold.
Further, still including the die sinking mechanism, the die sinking mechanism is including:
the top of each concave clamping plate is connected with a first rotating shaft;
the first rotating shafts are connected with the elastic connecting rods;
the inner sides of the elastic connecting rods are connected with two second clamping blocks;
the two sides of the workbench are rotatably connected with the reels;
the pull ropes are wound on the winding wheel;
the hook, stay cord end all are connected with the hook, and the hook all with right side mould and left side mould joint.
Further, still including locking mechanism, locking mechanism includes:
the sliding frames are connected to the middles of the two sides of the workbench in a sliding manner;
four sides of the lower part of two sides of the workbench are connected with guide columns, and the four guide columns are connected with the sliding frame in a sliding manner;
the first springs are connected between the four sides of the bottom of the sliding frame and the workbench and sleeved outside the guide columns;
the sliding frames are connected with a third clamping block in a sliding manner;
the second springs are connected between the bottom of the third clamping block and the sliding frame and sleeved on the lower side of the third clamping block;
the outer walls of the lower sides of the right side die and the left side die are connected with wedge blocks, and the wedge blocks are in extrusion press fit with the third clamping blocks;
the left parts of the two sides of the workbench are both connected with a fourth clamping block in a sliding manner;
and the third springs are connected between the right side of the fourth clamping block and the workbench and are sleeved outside the fourth clamping block.
Further, still including push mechanism, push mechanism is including:
the mounting block is connected to one side of the top of the workbench;
the mounting block is connected with a cylinder;
the push plate is connected with one side of the cylinder.
Further, still including cooling body, cooling body is including:
the left front side of the workbench is connected with a fixed rod;
the fixed rod is connected with the cold air pipe;
connect the flitch, workstation one side is connected with connects the flitch.
Furthermore, the push plate is arc-shaped.
The invention has the beneficial effects that: 1. through the cooperation between extrusion mechanism and the heating mechanism, can make the tire by the extrusion fixed, can carry out thermoforming to the tire simultaneously, can improve people's work efficiency like this.
2. Through the matching between the mold opening mechanism and the locking mechanism, the mold can be automatically opened after the tire is thermally formed, so that people can take out the tire conveniently.
3. Through the cooperation between push mechanism and the cooling body, can realize automatic feeding and carry out refrigerated effect with the tire.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the extruding mechanism and the heating mechanism according to the present invention.
Fig. 3 is a schematic three-dimensional structure diagram of the mold opening mechanism of the invention.
Fig. 4 is a schematic perspective view of the portion a in fig. 3 according to the present invention.
Fig. 5 is a schematic perspective view of the pushing mechanism and the cooling mechanism of the present invention.
Description of reference numerals: 1_ workbench, 2_ hydraulic cylinder, 3_ extrusion mechanism, 31_ right side mold, 32_ first clamping block, 33_ left side mold, 34_ concave clamping plate, 35_ inner mold, 36_ sliding block, 4_ heating mechanism, 41_ first heat conduction plate, 42_ second heat conduction plate, 43_ heating pipe, 5_ mold opening mechanism, 51_ first rotating shaft, 52_ elastic connecting rod, 53_ second clamping block, 54_ pull rope, 55_ reel, 56_ hook, 6_ locking mechanism, 61_ carriage, 62_ guide column, 63_ first spring, 64_ third clamping block, 65_ wedge block, 66_ second spring, 67_ fourth clamping block, 68_ third spring, 7_ pushing mechanism, 71_ mounting block, 72_ cylinder, 73_ push plate, 8_ cooling mechanism, 81_ fixed rod, 82_ cold air pipe, and 83_ receiving plate.
Detailed Description
The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.
Example 1
A high-molecular rubber tire rapid thermoforming machine is shown in figure 1 and comprises a workbench 1, a hydraulic cylinder 2, an extrusion mechanism 3 and a heating mechanism 4, wherein the hydraulic cylinder 2 is connected to the upper portion of the workbench 1, the heating mechanism 4 is connected to the hydraulic cylinder 2, and the extrusion mechanism 3 is connected to the top of the workbench 1.
When people need carry out thermoforming with the tire, place the tire on workstation 1 earlier, inwards extrude extrusion mechanism 3 afterwards, fix the tire, then 2 extensions of control pneumatic cylinder drive heating mechanism 4 heats the tire, can make the tire by thermoforming like this, and after the completion, control pneumatic cylinder 2 shortens, drives heating mechanism 4 and upwards removes and reset, and it can to take out the tire.
Example 2
On the basis of embodiment 1, as shown in fig. 2, the extruding mechanism 3 includes a right side die 31, a first fixture block 32, a left side die 33, a concave clamping plate 34, an inner die 35 and a slider 36, the sliders 36 are slidably connected to the front and rear sides of the top of the workbench 1, the right side die 31 is connected between the sliders 36 on the front side, the left side die 33 is connected between the sliders 36 on the rear side, the first fixture block 32 is arranged on each of the left and right sides of the right side die 31 and the left side die 33, the concave clamping plate 34 is connected to each of the left and right sides of the component of the heating mechanism 4, and the inner die 35 is connected to the component.
People can place the tire between right side mould 31 and left side mould 33 earlier, move the inboard with right side mould 31 and left side mould 33 afterwards and fix the tire, move down when heating mechanism 4 and drive centre form 35 and spill cardboard 34 and move down, make spill cardboard 34 close first fixture block 32 mutually and fix the tire, move upward when heating mechanism 4 and reset and drive centre form 35 and spill cardboard 34 and move upward and reset, people move outside right side mould 31 and left side mould 33 afterwards and reset, it can to take out the tire.
Heating mechanism 4 is connected with second heat-conducting plate 42 including first heat-conducting plate 41, second heat-conducting plate 42 and heating pipe 43 in the bottom of pneumatic cylinder 2, and second heat-conducting plate 42 all is connected with concave cardboard 34 and centre form 35, and four sides of second heat-conducting plate 42 all are connected with first heat-conducting plate 41, and second heat-conducting plate 42 bottom is equipped with heating pipe 43, and heating pipe 43 is located in the middle of the centre form 35.
When the hydraulic cylinder 2 is extended, the first heat conducting plate 41, the second heat conducting plate 42 and the heating pipe 43 are driven to move downwards to heat the tire, and when the hydraulic cylinder 2 is shortened, the first heat conducting plate 41, the second heat conducting plate 42 and the heating pipe 43 are driven to move upwards to reset.
Example 3
On the basis of embodiment 2, as shown in fig. 3 to 5, the mold opening device 5 is further included, the mold opening device 5 includes a first rotating shaft 51, an elastic connecting rod 52, second clamping blocks 53, a pulling rope 54, a reel 55 and a hook 56, the top of the concave clamping plate 34 is connected with the first rotating shaft 51, the first rotating shaft 51 is connected with the elastic connecting rod 52, the inner sides of the elastic connecting rod 52 are connected with the two second clamping blocks 53, the front side and the rear side of the workbench 1 are rotatably connected with the reel 55, the pulling rope 54 is wound around the reel 55, the tail end of the pulling rope 54 is connected with the hook 56, and the hook 56 is clamped with the right mold 31 and the left mold 33.
When the inner mold 35 moves downwards, the first rotating shaft 51 and the elastic connecting rod 52 are driven to move downwards, when the elastic connecting rod 52 contacts the first clamping block 32, the first clamping block 32 is firstly extruded inwards, so that the tire is clamped, when the elastic connecting rod 52 is separated from the first clamping block 32, the elastic connecting rod 52 is reset due to the elastic effect, when the inner mold 35 moves downwards to the lowest side, the pull rope 54 is hung at the top of the inner mold 35 by people, the right side mold 31 and the left side mold 33 are hooked by the hook 56, when the inner mold 35 moves upwards, the first rotating shaft 51 and the elastic connecting rod 52 are driven to move upwards, the first clamping block 32 is pulled outwards by the elastic connecting rod 52, so that the right side mold 31 and the left side mold 33 move outwards, the inner mold 35 moves upwards, the right side mold 31 and the left side mold 33 are driven by the pull rope 54 to move outwards to loosen the wheel.
The locking mechanism 6 comprises a sliding frame 61, a guide post 62, a first spring 63, a third clamping block 64, a wedge-shaped block 65, a second spring 66, a fourth clamping block 67 and a third spring 68, the sliding frame 61 is connected between the front side and the rear side of the workbench 1 in a sliding manner, the guide post 62 is connected with the four sides of the lower part of the front side and the rear side of the workbench 1 in a sliding manner, the four guide posts 62 are connected with the sliding frame 61 in a sliding manner, the first spring 63 is connected between the four sides of the bottom of the sliding frame 61 and the workbench 1, the first spring 63 is sleeved outside the guide post 62, the sliding frame 61 is connected with the third clamping block 64 in a sliding manner, the second spring 66 is connected between the bottom of the third clamping block 64 and the sliding frame 61, the second spring 66 is sleeved on the lower side of the third clamping block 64, the wedge-shaped block 65 is connected with the outer walls of the lower sides of the right side, the left parts of the front side and the rear side of the workbench 1 are both connected with a fourth fixture block 67 in a sliding mode, a third spring 68 is connected between the right side of the fourth fixture block 67 and the workbench 1, and the third spring 68 is sleeved on the outer side of the fourth fixture block 67.
When the tire is heated, one can catch the hook 56 on the third block 64, when the right mold 31 and the left mold 33 move outwards a little distance, the hook 56 hooks the right mold 31 and the left mold 33, when the wedge 65 moves outwards with the right mold 31 and the left mold 33, the wedge 65 presses the third block 64, drives the third block 64 to move downwards, the second spring 66 is compressed, the hook 56 separates from the third block 64, drives the right mold 31 and the left mold 33 to move outwards under the action of the pull rope 54, when the wedge 65 presses the sliding frame 61, drives the sliding frame 61, the third block 64 and the second spring 66 to move downwards, the first spring 63 is compressed, when the sliding frame 61 moves downwards to the lowest side, the fourth block 67 is driven under the action of the first spring 63, and the sliding frame 61 and the third block 64 move rightwards all the time, therefore, the sliding frame 61 and the third clamping block 64 cannot move upwards to reset, and after the tire is taken out and the sliding frame 61 and the third clamping block 64 need to reset, people move the fourth clamping block 67 leftwards, so that the third spring 68 is compressed, and under the action of the second spring 66 and the first spring 63, the sliding frame 61 and the third clamping block 64 are driven to move upwards to reset.
The automatic pushing device is characterized by further comprising a pushing mechanism 7, wherein the pushing mechanism 7 comprises an installation block 71, an air cylinder 72 and a pushing plate 73, the installation block 71 is connected to the right side of the top of the workbench 1, the air cylinder 72 is connected to the installation block 71, and the pushing plate 73 is connected to the left side of the air cylinder 72.
When needing the unloading, can place a collection frame on the left of this device, control cylinder 72 extension drives push pedal 73 and tire and removes left for in the tire is collected the frame by the propelling movement, control cylinder 72 shortens afterwards, drives push pedal 73 and moves right and resets, and the people of being convenient for like this collect the tire.
Still including cooling body 8, cooling body 8 is including dead lever 81, air conditioning pipe 82 and connect flitch 83, and the left front side of workstation 1 is connected with dead lever 81, is connected with air conditioning pipe 82 on the dead lever 81, and the left rear side of workstation 1 is connected with and connects flitch 83.
After the tires are heated, the tires move to the material receiving plate 83, and people can connect the cold air pipe 82 with cold air equipment to blow cold air into the tires through the cold air pipe 82 to cool the tires.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A high-molecular rubber tire rapid thermoforming machine is characterized by comprising:
the hydraulic cylinder (2) is connected to the upper part of the workbench (1);
the heating mechanism (4) is connected to the hydraulic cylinder (2);
the top of the working table (1) is connected with the extrusion mechanism (3).
2. A high-molecular rubber tire rapid thermoforming machine as claimed in claim 1, characterized in that the extrusion mechanism (3) comprises:
the four sides of the workbench (1) are all connected with the sliding blocks (36) in a sliding manner;
the right side die (31) is connected between the slide blocks (36) on the front side;
a left mold (33) is connected between the slide blocks (36) on the rear side;
the first clamping block (32) is arranged on each of the two sides of the first clamping block (32), the right side die (31) and the left side die (33);
the concave clamping plates (34) are connected to the two sides of the part of the heating mechanism (4);
the inner die (35) is connected to the part of the heating mechanism (4).
3. A rapid thermoforming machine for polymer rubber tire as claimed in claim 2, characterized in that the heating mechanism (4) comprises:
the bottom of the hydraulic cylinder (2) is connected with a second heat-conducting plate (42), and the second heat-conducting plate (42) is connected with the concave clamping plate (34) and the inner die (35);
the four sides of the first heat-conducting plate (41) and the second heat-conducting plate (42) are connected with the first heat-conducting plate (41);
the heating pipe (43) is arranged at the bottom of the second heat conduction plate (42), and the heating pipe (43) is positioned in the middle of the inner die (35).
4. A rapid thermoforming machine for polymer rubber tire as claimed in claim 3, characterized in that, it further comprises a mold opening mechanism (5), the mold opening mechanism (5) comprises:
the top of the concave clamping plate (34) is connected with the first rotating shaft (51);
the elastic connecting rods (52) are connected to the first rotating shafts (51);
the inner sides of the elastic connecting rods (52) are connected with two second clamping blocks (53);
the two sides of the workbench (1) are rotatably connected with the reels (55);
the pull ropes (54) are wound on the winding wheels (55);
hook (56), stay cord (54) end all is connected with hook (56), and hook (56) all with right side mould (31) and left side mould (33) joint.
5. A high-molecular rubber tire rapid thermoforming machine as claimed in claim 4, characterized in that, further comprising a locking mechanism (6), the locking mechanism (6) comprises:
the middle parts of two sides of the workbench (1) are connected with the sliding frame (61) in a sliding way;
the four sides of the lower part of the two sides of the workbench (1) are connected with the guide columns (62), and the four guide columns (62) are connected with the sliding frame (61) in a sliding manner;
the first springs (63) are connected between the four sides of the bottom of the sliding frame (61) and the workbench (1), and the first springs (63) are sleeved on the outer sides of the guide columns (62);
the sliding frame (61) is connected with a third clamping block (64) in a sliding manner;
the second springs (66) are connected between the bottoms of the third clamping blocks (64) and the sliding frame (61), and the second springs (66) are sleeved on the lower sides of the third clamping blocks (64);
the wedge blocks (65) are connected to the outer walls of the lower sides of the right side die (31) and the left side die (33), and the wedge blocks (65) are in extrusion fit with the third clamping blocks (64);
the left parts of the two sides of the workbench (1) are both connected with a fourth fixture block (67) in a sliding manner;
and a third spring (68) is connected between the right side of the fourth clamping block (67) and the workbench (1), and the third spring (68) is sleeved on the outer side of the fourth clamping block (67).
6. A high-molecular rubber tyre rapid thermoforming machine as claimed in claim 5, characterized in that, it also comprises a pushing mechanism (7), the pushing mechanism (7) comprises:
the mounting block (71), one side of the top of the workbench (1) is connected with the mounting block (71);
the air cylinder (72) is connected to the mounting block (71);
a push plate (73), and one side of the air cylinder (72) is connected with the push plate (73).
7. A rapid thermoforming machine for polymer rubber tire as claimed in claim 6, characterized in that, it further comprises a cooling mechanism (8), the cooling mechanism (8) comprises:
the left front side of the workbench (1) is connected with the fixed rod (81);
the air conditioning pipe (82), the air conditioning pipe (82) is connected on the fixed rod (81);
connect flitch (83), workstation (1) one side is connected with connects flitch (83).
8. A rapid thermoforming machine for polymer rubber tires as claimed in claim 6, characterized in that the push plate (73) is arc-shaped.
CN202011490596.XA 2020-12-17 2020-12-17 High-molecular rubber tire rapid thermal forming machine Pending CN112721114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011490596.XA CN112721114A (en) 2020-12-17 2020-12-17 High-molecular rubber tire rapid thermal forming machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011490596.XA CN112721114A (en) 2020-12-17 2020-12-17 High-molecular rubber tire rapid thermal forming machine

Publications (1)

Publication Number Publication Date
CN112721114A true CN112721114A (en) 2021-04-30

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CN1857909A (en) * 2006-06-09 2006-11-08 孙康华 Differential pressure forming method for foamed bassinet tyre and forming mould
CN2931058Y (en) * 2006-08-08 2007-08-08 广州华工百川科技股份有限公司 Composite tyre indefinite die
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