CN208714334U - The fabrication and installation all-in-one machine of air-brake coupling hose rubber tire - Google Patents
The fabrication and installation all-in-one machine of air-brake coupling hose rubber tire Download PDFInfo
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- CN208714334U CN208714334U CN201821369816.1U CN201821369816U CN208714334U CN 208714334 U CN208714334 U CN 208714334U CN 201821369816 U CN201821369816 U CN 201821369816U CN 208714334 U CN208714334 U CN 208714334U
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- rubber tire
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- coupling hose
- brake coupling
- injection
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Abstract
The utility model proposes a kind of fabrication and installation all-in-one machines of air-brake coupling hose rubber tire, belong to the Installation Technology field of sebific duct rubber tire, it is capable of the production and installation of step completion air-brake coupling hose rubber tire, it is easy to operate, installation effectiveness is high, moreover, air-brake coupling hose and rubber tire will not be damaged, rejection rate can be substantially reduced.The fabrication and installation all-in-one machine includes rubber tire mold and injection molding machine；Rubber tire mold is equipped with inside cavity, and inside cavity is made of sebific duct placed cavity and rubber tire type chamber；The shape of rubber tire type chamber matches with rubber tire, and sebific duct placed cavity, axially across rubber tire type chamber, and runs through rubber tire mold along rubber tire type chamber, and shape and the air-brake coupling hose of sebific duct placed cavity match；Rubber tire mold is equipped with injection hole, and injection hole is connected with rubber tire type chamber by injection channel；Injection molding machine has injection-moulding nozzle, and injection-moulding nozzle is docked with injection hole.
Description
Technical field
The utility model belong to sebific duct rubber tire Installation Technology field more particularly to a kind of air-brake coupling hose rubber tire
Fabrication and installation all-in-one machine.
Background technique
Automobile brake hose is the important spare part in automobile pipeline, and main function is that braking is transmitted in automobile brake
Medium.In vehicle traveling process, air-brake coupling hose may generate friction with car body, so as to cause air-brake coupling hose rupture, seriously affect
The braking effect of automobile generates security risk.To prevent air-brake coupling hose and car body from generating friction, it usually needs outside air-brake coupling hose
Rubber tire is installed.
Currently, the production and installation of air-brake coupling hose rubber tire, usually first make fixed-size rubber tire, it then again will system
The rubber tire performed is sleeved on outside air-brake coupling hose by manually or installing dedicated installment work platform using rubber tire.However, due to glue
The internal diameter of wheel is typically slightly less than the outer diameter of air-brake coupling hose, and during the installation process, rubber tire is easily cracked, and installs time-consuming and laborious, waste product
Rate is high, and installation effectiveness is low.
Thus, the installation effectiveness of air-brake coupling hose rubber tire how is improved, while reducing rejection rate, is current urgently to be solved
One technical problem.
Utility model content
Above shortcomings when the utility model is installed for existing air-brake coupling hose with rubber tire, propose a kind of air-brake coupling hose
With the fabrication and installation all-in-one machine of rubber tire, it is capable of the production and installation of step completion air-brake coupling hose rubber tire, easy to operate, installation effect
Rate is high, moreover, air-brake coupling hose and rubber tire will not be damaged, can substantially reduce rejection rate.
In order to achieve the above object, the technical solution adopted in the utility model are as follows:
The fabrication and installation all-in-one machine of air-brake coupling hose rubber tire, including rubber tire mold and for being molded into the rubber tire mold
Injection molding machine；The rubber tire mold be equipped with inside cavity, the inside cavity by the sebific duct placed cavity for accommodating air-brake coupling hose, and
Rubber tire type chamber for limiting rubber tire injection molding shape is constituted；The shape of the rubber tire type chamber matches with the rubber tire, the glue
Pipe placed cavity, axially across the rubber tire type chamber, and runs through the rubber tire mold along the rubber tire type chamber, and the sebific duct is placed
The shape of chamber matches with the air-brake coupling hose；The rubber tire mold is equipped with injection hole, and the injection hole passes through with rubber tire type chamber
Injection channel is connected；The injection molding machine has injection-moulding nozzle, and the injection-moulding nozzle is docked with the injection hole.
Preferably, the rubber tire mold includes mode, the mode includes the upper cores being oppositely arranged and lower mode, institute
It states and forms the inside cavity between upper cores and lower mode, the upper cores and lower mode are fastened on one by the first fastener
It rises.
Preferably, the rubber tire mold further includes the template for protecting the mode, the template includes opposite sets
The cope plate and lower template set, the upper cores are embedded in the cope plate, and the lower mode is embedded in the lower template, described
Cope plate is connected with lower template by the second fastener.
Preferably, the sebific duct placed cavity is equipped with sebific duct fixing piece at the impenetrating mouth of the rubber tire mold, it is described
Sebific duct fixing piece has the bayonet for blocking the air-brake coupling hose, and the sebific duct fixing piece is removably connected to the rubber tire mould
Tool.
Compared with prior art, advantages and beneficial effects of the utility model lie in that
1, the fabrication and installation all-in-one machine of air-brake coupling hose rubber tire provided by the utility model, being capable of step completion air-brake coupling hose
Easy to operate with the production and installation of rubber tire, installation effectiveness is high, moreover, air-brake coupling hose and rubber tire will not be damaged, can drop significantly
Low rejection rate；
2, using the prepared rubber tire of fabrication and installation all-in-one machine of air-brake coupling hose rubber tire provided by the utility model,
With the relative position of air-brake coupling hose, controlled by the placement location of air-brake coupling hose, by adjusting the placement location of air-brake coupling hose
Guarantee that rubber tire is installed in place, it is high that rubber tire installs accuracy rate.
Detailed description of the invention
Fig. 1 is the structural representation of the fabrication and installation all-in-one machine of air-brake coupling hose rubber tire provided by the embodiment of the utility model
Figure；
Fig. 2 is the structural schematic diagram of rubber tire mold provided by the embodiment of the utility model；
Fig. 3 is the combination diagram of upper cores provided by the embodiment of the utility model and cope plate；
Fig. 4 is the combination diagram of lower mode and lower template provided by the embodiment of the utility model；
Fig. 5 is the structural schematic diagram of sebific duct fixing piece provided by the embodiment of the utility model；
Fig. 6 is the connection schematic diagram of sebific duct fixing piece and mode provided by the embodiment of the utility model；
In above each figure: 1, injection molding machine；11, injection-moulding nozzle；2, rubber tire mold；21, injection hole；22, injection channel；23,
Inside cavity；231, sebific duct placed cavity；232, rubber tire type chamber；24, mode；241, upper cores；242, lower mode；243, the first fastening
Part；25, template；251, cope plate；252, lower template；253, the second fastener；3, air-brake coupling hose；4, sebific duct fixing piece；41, block
Mouthful.
Specific embodiment
In the following, the utility model is specifically described by illustrative embodiment.It should be appreciated, however, that not having
In the case where being further discussed below, element, structure and features in an embodiment can also be advantageously incorporated into other implementations
In mode.
In the description of the present invention, it should be noted that term "inner", "outside", "upper", "lower", "left", "right" etc.
The orientation or positional relationship of instruction is to be merely for convenience of description the utility model and letter based on attached positional relationship shown in FIG. 1
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance.
As Figure 1-Figure 4, the utility model relates to a kind of fabrication and installation all-in-one machines of air-brake coupling hose rubber tire, including glue
Take turns mold 2 and the injection molding machine 1 for being molded into rubber tire mold 2；Rubber tire mold 2 is equipped with inside cavity 23, and inside cavity 23 is by being used for
The sebific duct placed cavity 231 of air-brake coupling hose 3 is accommodated, and the rubber tire type chamber 232 for limiting rubber tire injection molding shape is constituted；Rubber tire type
The shape of chamber 232 matches with rubber tire, and sebific duct placed cavity 231, axially across rubber tire type chamber 232, and is passed through along rubber tire type chamber 232
Rubber tire mold 2 is worn, shape and the air-brake coupling hose 3 of sebific duct placed cavity 231 match；Rubber tire mold 2 is equipped with injection hole 21, injection hole
21 are connected with rubber tire type chamber 232 by injection channel 22；Injection molding machine 1 has injection-moulding nozzle 11, injection-moulding nozzle 11 and injection hole
21 docking, to be molded by injection hole 21 to rubber tire type chamber 232.
In the fabrication and installation all-in-one machine of above-mentioned air-brake coupling hose rubber tire, the inside cavity 23 of rubber tire mold 2 is by rubber tire type chamber 232
It is constituted with the sebific duct placed cavity 231 for passing through rubber tire type chamber 232, when in use, air-brake coupling hose 3 is placed in the sebific duct of rubber tire mold 2
In placed cavity 231, it is molded by injection molding machine 1 to rubber tire type chamber 232, rubber tire can be made outside air-brake coupling hose 3, meanwhile, injection molding
The rubber tire of production is fixed on 3 outer wall of air-brake coupling hose in injection molding, forms the structure that rubber tire is sleeved on 3 outer wall of air-brake coupling hose, because
And the installation steps of rubber tire are also completed while rubber tire is molded and makes.
For the specific structure of rubber tire mold 2, as shown in figs 2-4, rubber tire mold 2 includes mode 24, and mode 24 includes
The upper cores 241 being oppositely arranged and lower mode 242 form inside cavity 23, upper cores 241 between upper cores 241 and lower mode 242
It is tightened together with lower mode 242 by the first fastener 243.This rubber tire mold 2 used in the present embodiment is split knot
Structure, convenient for taking out the related rubber tire of air-brake coupling hose 3 together after rubber tire completes.It should be noted that the present embodiment uses
The first fastener 243 be specially screw, it is to be understood that other fasteners can also be used as the in those skilled in the art
One fastener 243, such as bolt or hasp lock etc., as long as upper cores 241 and lower mode 242 can tighten together.
In use, separating the first fastener 243, upper cores 241 and lower mode 242 are separated, air-brake coupling hose 3 is placed in lower mode 242
Sebific duct placed cavity 231 in, close upper cores 241, be fastened on upper cores 241 and lower mode 242 by the first fastener 243
Together；After the completion of injection molding, upper cores 241 and lower mode 242 can be made to separate by separating the first fastener 243, can will braked
The related rubber tire of hose 3 takes out together.
Further, in order to avoid the damage of mode 24, as a preference, as shown in figs 2-4, rubber tire mold 2 is also
Including for protecting the template 25 of mode 24, template 25 includes the cope plate 251 being oppositely arranged and lower template 252, upper cores 241
It is embedded in cope plate 251, lower mode 242 is embedded in lower template 252, and cope plate 251 and lower template 252 pass through the second fastener
253 connections.By the template 25 of setting, is on the one hand conducive to protect mode 24, mode 24 is avoided to be subject to crushing, it is on the other hand advantageous
In the fastening for guaranteeing upper cores 241 and lower mode 242.It should be noted that the second fastener 253 that the present embodiment uses is specific
For bolt, it is to be understood that other fasteners can also be used as the second fastener 253, such as spiral shell in those skilled in the art
Nail or hasp lock etc., as long as cope plate 251 and lower template 252 can link together.In use, by separating second
Fastener 253 separates cope plate 251 and lower template 252, that is, can be taken off mode 24, in order to place air-brake coupling hose 3 or take out
Air-brake coupling hose 3；After upper cores 241 and lower mode 242 are fastenedly connected, mode 24 is embedded in lower template 252, cope plate is closed
251, cope plate 251 and lower template 252 are fastenedly connected by the second fastener 253, subsequent injection operation can be carried out.
It should be noted that upper cores 241 and lower mode 242 are fastened after placing air-brake coupling hose 3, and by upper mold
The step of plate 251 and lower template 252 fasten, referred to as molds；Before taking out air-brake coupling hose 3 and rubber tire, by cope plate 251 under
Template 252 separates, and the step that upper cores 241 and lower mode 242 are separated, is referred to as opened.
For the inside cavity 23 of rubber tire mold 2, it should be noted that as shown in figs 2-4, glue is set with outside air-brake coupling hose 3
The shape of inside cavity 23 in outer contour shape and the present embodiment after wheel is adapted, when air-brake coupling hose 3 is placed in sebific duct placed cavity
After 231, the remaining space for injection molding of inside cavity 23 is only 232 part of rubber tire type chamber, the rubber tire obtained after injection molding, interior table
Face is fixedly connected on the outer wall of air-brake coupling hose 3, and a step completes the production and installation of rubber tire.It should be noted the present embodiment
In, rubber tire type chamber 232 is two, can improve rubber tire in 3 two rubber tires of outer fabrication and installation of air-brake coupling hose by being once molded
The efficiency of fabrication and installation.It is understood that those skilled in the art can be as needed, the specific number that rubber tire type chamber 232 is set
Amount.
In order to guarantee that the air-brake coupling hose 3 being placed in sebific duct placed cavity 231 in rubber tire manufacturing process is fixed, such as Fig. 5
With shown in Fig. 6, sebific duct placed cavity 231 is equipped with sebific duct fixing piece 4 at the impenetrating mouth of rubber tire mold 2, and sebific duct fixing piece 4 has
For blocking the bayonet 41 of air-brake coupling hose 3, sebific duct fixing piece 4 is removably connected to rubber tire mold 2.It should be noted that at this
In embodiment, sebific duct fixing piece 4 is removably connected to the left and right sides of mode 24 by screw.In use, air-brake coupling hose 3 is set
In sebific duct placed cavity 231, after upper cores 241 and the connection fastening of lower mode 242, sebific duct fixing piece 4 is connected by screw
In the left and right sides of mode 24, when connection, makes the bayonet 41 of sebific duct fixing piece 4 block air-brake coupling hose 3, to fix air-brake coupling hose 3.
In addition it is also necessary to explanation, the injection molding machine 1 that the present embodiment uses for screw injection molding machine commonly used in the art,
Its structure is well known to those skilled in the art, and this will not be repeated here.
Using the method for fabrication and installation all-in-one machine fabrication and installation air-brake coupling hose rubber tire described in above-described embodiment, including such as
Lower step:
S1: thermoplastic elastomer (TPE) being added in injection molding machine 1, injection temperature is warming up to, and makes thermoplastic elastomer (TPE) in molten
State；
S2: air-brake coupling hose 3 is placed in the sebific duct placed cavity 231 of rubber tire mold 2, by injection molding machine 1 to rubber tire mold 2
To make rubber tire, pressure maintaining, cooling and shaping takes out the related rubber tire of air-brake coupling hose 3 together for injection molding in rubber tire type chamber 232.
In the method for above-mentioned fabrication and installation air-brake coupling hose rubber tire, it should be noted that be molded by injection molding machine 1
Concrete operation step, can be carried out according to the operating instruction for the injection molding machine 1 specifically selected, this will not be repeated here.
In a preferred embodiment, thermoplastic elastomer (TPE) is TPV elastomer.Original is molded as rubber tire using this elastomer
Material, obtained rubber tire can satisfy requirement, moreover, the material is reusable, can substantially reduce material cost.
In a preferred embodiment, injection temperature is 165 DEG C~210 DEG C.This preferred embodiment further defines injection molding
The preferred scope of temperature, when injection temperature in the range when, the performance of air-brake coupling hose will not only be had an impact, but also can
Guarantee the injection molding quality of rubber tire.It is understood that those skilled in the art can appoint in the preferred scope of above-mentioned injection temperature
Meaning value, such as: 165 DEG C, 180 DEG C, 200 DEG C or 210 DEG C etc..
In a preferred embodiment, injection pressure when injection molding be 10MPa~30MPa, injection speed be 300cc/min~
800cc/min.This preferred embodiment further defines the preferred scope of injection pressure and injection speed, if injection pressure is too low
Or injection speed is excessively slow, the defects of will lead to rubber tire there are starveds, when injection pressure and injection speed are in above-mentioned preferred scope
When interior, the injection molding quality of rubber tire is advantageously ensured that.It is understood that those skilled in the art can be in above-mentioned injection temperature and note
Any value in the preferred scope of firing rate degree, such as: injection pressure can be 10MPa, 20MPa or 30MPa etc., and injection speed can
Think 300cc/min, 400cc/min, 500cc/min, 600cc/min, 700cc/min or 800cc/min etc..
In a preferred embodiment, the dwell time is 0.5min~5min.This preferred embodiment further defines pressure maintaining
The preferred scope of time advantageously ensures that the injection molding quality of rubber tire when controlling within the above range the dwell time.It is understood that
, those skilled in the art can in the preferred scope of above-mentioned dwell time any value, such as: 0.5min, 1min,
2min, 3min, 4min or 5min etc..
For the method for above-mentioned fabrication and installation air-brake coupling hose rubber tire, it is described below in conjunction with specific embodiment.
Embodiment 1
TPV elastomer is added in injection molding machine 1, is warming up to 185 DEG C, makes TPV elastomer in molten condition；By air-brake coupling hose
3 are placed in the sebific duct placed cavity 231 of rubber tire mold 2, and molding starts injection molding machine 1, by injection molding machine 1 to the rubber tire of rubber tire mold 2
It is molded in type chamber 232 to make rubber tire, injection pressure when injection molding is 20MPa, injection speed 550cc/min, pressure maintaining
Cooling and shaping after 2.5min takes out the related rubber tire of air-brake coupling hose 3 after die sinking together.
Embodiment 2
TPV elastomer is added in injection molding machine 1, is warming up to 165 DEG C, makes TPV elastomer in molten condition；By air-brake coupling hose
3 are placed in the sebific duct placed cavity 231 of rubber tire mold 2, and molding starts injection molding machine 1, by injection molding machine 1 to the rubber tire of rubber tire mold 2
It is molded in type chamber 232 to make rubber tire, injection pressure when injection molding is 10MPa, injection speed 300cc/min, pressure maintaining 5min
Cooling and shaping afterwards takes out the related rubber tire of air-brake coupling hose 3 after die sinking together.
Embodiment 3
TPV elastomer is added in injection molding machine 1, is warming up to 210 DEG C, makes TPV elastomer in molten condition；By air-brake coupling hose
3 are placed in the sebific duct placed cavity 231 of rubber tire mold 2, and molding starts injection molding machine 1, by injection molding machine 1 to the rubber tire of rubber tire mold 2
It is molded in type chamber 232 to make rubber tire, injection pressure when injection molding is 30MPa, injection speed 800cc/min, pressure maintaining
Cooling and shaping after 0.5min takes out the related rubber tire of air-brake coupling hose 3 after die sinking together.
Embodiment 4
TPV elastomer is added in injection molding machine 1, is warming up to 180 DEG C, makes TPV elastomer in molten condition；By air-brake coupling hose
3 are placed in the sebific duct placed cavity 231 of rubber tire mold 2, and molding starts injection molding machine 1, by injection molding machine 1 to the rubber tire of rubber tire mold 2
It is molded in type chamber 232 to make rubber tire, injection pressure when injection molding is 20MPa, injection speed 400cc/min, pressure maintaining 1min
Cooling and shaping afterwards takes out the related rubber tire of air-brake coupling hose 3 after die sinking together.
Comparative example 1
TPV elastomer is added in injection molding machine 1, is warming up to 180 DEG C, makes TPV elastomer in molten condition；By air-brake coupling hose
3 are placed in the sebific duct placed cavity 231 of rubber tire mold 2, and molding starts injection molding machine 1, by injection molding machine 1 to the rubber tire of rubber tire mold 2
It is molded in type chamber 232 to make rubber tire, injection pressure when injection molding is 5MPa, after injection speed 200cc/min, pressure maintaining 3min
Cooling and shaping takes out the related rubber tire of air-brake coupling hose 3 after die sinking together.
Performance test
(1) rubber tire pattern
The pattern for the rubber tire that observation embodiment 1-4 and comparative example 1 obtain, wherein the rubber tire surface light that embodiment 1-4 is obtained
Sliding smooth, no starved phenomenon；The rubber tire that comparative example 1 obtains haves the defects that starved, is substandard product.
(2) pulling-out force is tested
In the product that testing example 1 obtains respectively, and the product that is obtained using conventional installation process, rubber tire and braking
Pulling-out force between hose, test result is as shown in table 1, test method are as follows: will assemble the air-brake coupling hose right angle setting of rubber tire
On tensile testing machine, keep brake hose assemblies on the same line and consistent with direction of pull, with the stretching of 25 ± 3mm/min
Speed is tested, until the rubber tire on hose assembly pulls.It should be noted that conventional installation process refers to first using molding
Legal system makees rubber tire, then the rubber tire made is mounted on outside air-brake coupling hose by manually installed mode.
1 pulling-out force comparing result of table
When the pulling-out force between rubber tire and air-brake coupling hose is greater than 120N, to reach technical requirements.As shown in Table 1, it compares
In conventional mounting mode, the pulling-out force in the product that the utility model embodiment is prepared between rubber tire and air-brake coupling hose slightly has
Decline, but still it is able to satisfy technical requirements.
(3) rejection rate is tested
The waste product for the product being prepared according to step provided by conventional installation process and embodiment 1 is counted respectively
Rate, the results are shown in Table 2.
2 rejection rate comparing result of table
As can be seen from Table 2, being prepared compared to conventional mounting mode using method provided by the utility model embodiment
Product rejection rate significantly reduce, be conducive to save material, reduce cost.
Claims (4)
1. the fabrication and installation all-in-one machine of air-brake coupling hose rubber tire, it is characterised in that: including rubber tire mold (2) and be used for the glue
Take turns the injection molding machine (1) being molded in mold (2)；The rubber tire mold (2) is equipped with inside cavity (23), and the inside cavity (23) is by being used for
The sebific duct placed cavity (231) of air-brake coupling hose (3) is accommodated, and the rubber tire type chamber (232) for limiting rubber tire injection molding shape is constituted；
The shape of the rubber tire type chamber (232) matches with the rubber tire, and the sebific duct placed cavity (231) is along the rubber tire type chamber
(232) axially across the rubber tire type chamber (232), and run through the rubber tire mold (2), the sebific duct placed cavity (231)
Shape matches with the air-brake coupling hose (3)；The rubber tire mold (2) is equipped with injection hole (21), the injection hole (21) and glue
Wheel-type chamber (232) is connected by injection channel (22)；The injection molding machine (1) has injection-moulding nozzle (11), the injection-moulding nozzle
(11) it is docked with the injection hole (21).
2. the fabrication and installation all-in-one machine of air-brake coupling hose rubber tire according to claim 1, it is characterised in that: the rubber tire mould
Having (2) includes mode (24), and the mode (24) includes the upper cores (241) being oppositely arranged and lower mode (242), the upper mold
It is formed between benevolence (241) and lower mode (242) inside cavity (23), the upper cores (241) and lower mode (242) pass through the
One fastener (243) tightens together.
3. the fabrication and installation all-in-one machine of air-brake coupling hose rubber tire according to claim 2, it is characterised in that: the rubber tire mould
Having (2) further includes for protecting the template of the mode (24) (25), and the template (25) includes the cope plate being oppositely arranged
(251) it is embedded in the cope plate (251) with lower template (252), the upper cores (241), the lower mode (242) is embedded in institute
It states in lower template (252), the cope plate (251) and lower template (252) are connected by the second fastener (253).
4. the fabrication and installation all-in-one machine of air-brake coupling hose rubber tire according to claim 1, it is characterised in that: the sebific duct is put
It sets chamber (231) and is equipped with sebific duct fixing piece (4) at the impenetrating mouth of the rubber tire mold (2), the sebific duct fixing piece (4) has
For blocking the bayonet (41) of the air-brake coupling hose (3), the sebific duct fixing piece (4) is removably connected to the rubber tire mold
(2)。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369816.1U CN208714334U (en) | 2018-08-23 | 2018-08-23 | The fabrication and installation all-in-one machine of air-brake coupling hose rubber tire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369816.1U CN208714334U (en) | 2018-08-23 | 2018-08-23 | The fabrication and installation all-in-one machine of air-brake coupling hose rubber tire |
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| CN208714334U true CN208714334U (en) | 2019-04-09 |
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ID=65979268
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108943570A (en) * | 2018-08-23 | 2018-12-07 | 青岛三祥科技股份有限公司 | The fabrication and installation all-in-one machine and its fabrication and installation method of air-brake coupling hose rubber tire |
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2018
- 2018-08-23 CN CN201821369816.1U patent/CN208714334U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108943570A (en) * | 2018-08-23 | 2018-12-07 | 青岛三祥科技股份有限公司 | The fabrication and installation all-in-one machine and its fabrication and installation method of air-brake coupling hose rubber tire |
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