CN103240816B - Folding method of resin pipe, and manufacturing method of resin pipe coated roller - Google Patents
Folding method of resin pipe, and manufacturing method of resin pipe coated roller Download PDFInfo
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- CN103240816B CN103240816B CN201210526216.2A CN201210526216A CN103240816B CN 103240816 B CN103240816 B CN 103240816B CN 201210526216 A CN201210526216 A CN 201210526216A CN 103240816 B CN103240816 B CN 103240816B
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Abstract
The present invention provides a folding method of a resin pipe, and a manufacturing method of a resin pipe coated roller. The invention aims to restrain resin pipe damage generated in resin pipe folding. The folding method comprises the following steps: an inserting step of inserting the resin pipe into the inner part of a cylindrical mold in a mode that two ends of the resin pipe are projected from two ends of the cylindrical mold; a deforming step of applying a uniform force on the whole circumference in the circumferential direction from the inner part of the resin pipe so that at least axial outside part of the projected part of the resin pipe deforms plastically; and a folding step of causing the inner circumferential surface of the plastically deformed part of the resin pipe to contact with the outer circumferential surface of a cylinder component of which the inner dimeter is larger than the outer diameter of the cylindrical mold, so that the cylinder component moves to the axial center of the cylindrical mold, thereby folding the projected parts of the resin pipe to the outer circumferential surface of the cylindrical mold.
Description
Technical field
The present invention relates to a kind of method of turning back of pitch tube, the manufacture method of pitch tube coated roller.Background technology
Patent documentation 1 and a kind of folding device is being Patent Document 2 discloses, its insertion tube in mould conduit is utilized
After multiple pawls are by the two ends expansion of the pipe, turned back on the vasculiferous two ends outer peripheral face of mould.
Patent documentation 1：Japanese Patent Publication 6-26824 publication
Patent documentation 2：Japanese Patent Publication 6-26825 publication
The content of the invention
The damage of the pitch tube that the problem of the present invention is produced when being and suppressing to turn back pitch tube.
The invention of technical scheme 1 is a kind of method of turning back of pitch tube, and it has following operations：Insertion operation, in the work
In sequence, in the way of the both ends for making pitch tube are protruded from the two ends of cylindrical mold, pitch tube is inserted into the cylindrical mold
Inside；Deformation operation, in the operation, radially applies uniform from the inside of above-mentioned pitch tube in circumferential whole circumference
Power, and make above-mentioned pitch tube from above-mentioned cylindrical mold protrusion projection at least axially outer portion plasticity become
Shape；And operation of turning back, in the operation, the inner peripheral surface of the part of the plastic deformation of above-mentioned pitch tube is made, with internal diameter more than upper
The outer peripheral face contact of the cylinder part of the external diameter of cylindrical mold is stated, above-mentioned cylinder part is made towards the axial direction of above-mentioned cylindrical mold
Center is moved, and the above-mentioned projection of above-mentioned pitch tube is turned back to the outer peripheral face of above-mentioned cylindrical mold.
The invention of technical scheme 2 is the method for turning back of the pitch tube described in a kind of technical scheme 1, wherein, above-mentioned work of turning back
Sequence has following operations：1st operation, in the operation, makes the inner circumferential of the part of the plastic deformation at the both ends of above-mentioned pitch tube
Face, contacts with internal diameter more than the outer peripheral face of the cylinder part of the external diameter of above-mentioned cylindrical mold；2nd operation, in the operation, makes
The above-mentioned cylinder part of side is moved towards the axial centre of above-mentioned cylindrical mold, by the above-mentioned convex of the one end of above-mentioned pitch tube
Go out part to turn back to the outer peripheral face of one end of above-mentioned cylindrical mold；3rd operation, the operation makes another after above-mentioned 2nd operation
The above-mentioned cylinder part of side towards above-mentioned cylindrical mold axially external movement, then in the cylinder part of above-mentioned opposite side
Near, above-mentioned pitch tube is pressed against in above-mentioned cylindrical mold；And the 4th operation, the operation after above-mentioned 3rd operation,
The above-mentioned cylinder part for making opposite side is moved towards the axial centre of above-mentioned cylindrical mold, by the other end of above-mentioned pitch tube
Above-mentioned projection to the outer peripheral face of the other end of above-mentioned cylindrical mold turns back.
The invention of technical scheme 3 is a kind of manufacture method of pitch tube coated roller, and it has following operations：Turn back operation,
In the operation, using the method for turning back of the pitch tube described in technical scheme 1 or 2, by the above-mentioned of the both ends of above-mentioned pitch tube
Projection to the outer peripheral face at the two ends of above-mentioned cylindrical mold turns back；Installation procedure, in the operation, will be in above-mentioned cylinder
The two ends of shape mould turn back after above-mentioned pitch tube and insert the end mold that the core bar in the pitch tube is kept, upwards
Install at the two ends for stating cylindrical mold；Injection process, in the operation, from above-mentioned end mold elastomeric material is injected；And sulfur
Chemical industry sequence, in the operation, heats to above-mentioned cylindrical mold and above-mentioned end mold, vulcanizes above-mentioned elastomeric material.
The effect of invention
The method of turning back of technology according to the present invention scheme 1, the power different in the circumferential from the inner utilization from pitch tube
The situation for making pitch tube plastic deformation is compared, can suppress to turn back pitch tube when the damage of the pitch tube that produces.
The method of turning back of technology according to the present invention scheme 2, compared with the 3rd operation not having a case that in this method,
The fold of pitch tube can be suppressed.
The manufacture method of technology according to the present invention scheme 3, the structure with the operation of turning back not having in this manufacture method
Compare, the yield rate of the pitch tube coated roller for producing can be improved.
Description of the drawings
Fig. 1 is the oblique view of the structure of the manufacture device for representing rubber rollers.
Fig. 2 is the oblique view of the structure of the manufacture device for representing rubber rollers.
Fig. 3 is the oblique view of the structure for representing mould.
Fig. 4 is the profile of the structure of the manufacture device for representing rubber rollers.
Fig. 5 is the schematic diagram of the structure of the heating part for representing heater.
Fig. 6-1 is the schematic diagram of the operation of turning back in the manufacture method for represent rubber rollers.
Fig. 6-2 is the schematic diagram of the operation of turning back in the manufacture method for represent rubber rollers.
Fig. 6-3 is the schematic diagram of the operation of turning back in the manufacture method for represent rubber rollers.
Fig. 7 is the schematic diagram of the variation of the operation of turning back in the manufacture method for represent rubber rollers.
Fig. 8 is the figure of the external diameter change in the axial direction for represent rubber rollers.
The explanation of label
11A axially outer portions
11 projections
12 cylindrical molds
13 pitch tubes
Mould under 14B（One example of end mold）
14A molds（One example of end mold）
20 core bars
64 cylinder parts
Specific embodiment
Below, based on an example for illustrating embodiment involved in the present invention.
（The manufacture device of rubber rollers）
The manufacture device 100 of the rubber rollers involved by present embodiment is manufacture rubber rollers（It is coated with the resin of pitch tube
Pipe coated roller）Device, as depicted in figs. 1 and 2, have：Mould 10；And contact with mould 10 and mould 10 is heated
Heater 50.As shown in Figures 2 and 3, mould 10 has：As the cylindrical shape of an example of the 1st mould of drum
Mould 12, its internal insertion core bar 20；As the 2nd mould（End mold）An example mold 14A, its to insertion circle
One end of the core bar 20 of the inside of cylindrical mould 12 is kept, and installed in the end of cylindrical mold 12；And make
For the 3rd mould（End mold）An example lower mould 14B, it keeps the other end of core bar 20, and installed in cylinder
At the other end of shape mould 12.
In addition, illustrating the mould 10 being provided with the state of pitch tube described later 13 in Fig. 2 ~ 4.In addition, mold 14A
With lower mould 14B be although with " on ", the title of D score, but as the using method of mould 10, be not limited to make mould
Tool 14A uses upward the situation of mould 10.
As shown in Figure 3 and Figure 4, core bar 20 is coaxially inserted in cylindrical mold 12 along the axial direction of cylindrical mold 12
Portion.Core bar 20 has：The plug body portion 22 of drum；And the axle portion 24 of drum, it is from plug body portion 22
Axial two ends are towards axially external and coaxially protrude.External diameter of the external diameter of axle portion 24 less than plug body portion 22（Plug body portion
External diameter of 22 external diameter more than axle portion 24）.
In the state of is inserted core bar 20 in cylindrical mold 12, in the outer peripheral face and cylindrical mold 12 of core bar 20
Inner peripheral surface 12A（Pitch tube described later 13）Between, formed for filling half finished rubber（Thermosetting liquid rubber）Filling
Space S（With reference to Fig. 4）.
In addition, in the present embodiment, core bar 20 is made up of multiple parts.Specifically, core bar 20 is configured to have：It is main
Body part 27A, it has plug body portion 22；The axial end portion in plug body portion 22, it is individually fixed in main part part
The axial two ends of 27A；And axle portion part 27B, it has axle portion 24.
As shown in Figure 3 and Figure 4, mold 14A and lower mould 14B（Hereinafter they are referred to upper/lower die 14）With shape
Become disc-shape（Cylindrical shape）Main part 15.In the radial direction central part of the main part 15, patchhole has been axially formed
（Insertion section）16, it is used to insert the axle portion 24 of the core bar 20 in insertion cylindrical mold 12.As upper/lower die 14, pass through
The axle portion 24 of core bar 20 is inserted in the patchhole 16 of main part 15, so as to keep the axle portion 24 of core bar 20.
In addition, as shown in figure 4, the main part 15 of upper/lower die 14 have contact surface 23, its core bar 20 axle portion 24 insert
In the state of entering in patchhole 16, contact with the end face 22A of the circular axle portion 24 in the plug body portion 22 of core bar 20.In the contact
Face 23 is provided with the O-ring seal 19 as seal member, and it between upper/lower die 14 and core bar 20 to sealing.
The outer circumferential side of the O-ring seal 19 in the main part 15 of mold 14A is provided with embedded division 21, and it is axially downward
Mould 14B stretches out side, is embedded in the inner side of the axial end portion of cylindrical mold 12.Lower mould 14B also in the same manner, in main part 15
The outer circumferential side of O-ring seal 19 is provided with embedded division 21, and it stretches out axially towards mold 14A sides, is embedded in cylindrical mold 12
The inner side of axial end portion.Upper/lower die 14 is by the way that embedded division 21 is embedded in the axial end portion of cylindrical mold 12, so as to relative
Installed from axially external in the axial end portion of cylindrical mold 12.
In addition, the external diameter of the main part 15 of upper/lower die 14 is identical with the external diameter of cylindrical mold 12, in upper/lower die 14
In the state of being installed in cylindrical mold 12, the outer peripheral face of main part 15 is located at same circle with the outer peripheral face of cylindrical mold 12
On cylinder face.
Additionally, as shown in figure 4, on the peripheral part of the patchhole 16 in lower mould 14B, being circumferentially formed with multiple being used for
The inlet 18 of injection half finished rubber.In the state of upper/lower die 14 is installed in cylindrical mold 12, the inlet 18
With connect in the packing space S being formed between the outer peripheral face of core bar 20 and the inner peripheral surface 12A of cylindrical mold 12.
In addition, in the axially external outer surface side of mold 14A, being coaxially formed with the recess 17 of ring-type.In addition, note
Entrance 18 can also be not formed on lower mould 14B, and is formed on mold 14A.
As depicted in figs. 1 and 2, heater 50 is formed as surrounding mould 10（Upper/lower die 14 and cylindrical mold 12）It is outer
The drum of side face, with being divided into two-part 1st calandria 50A and the 2nd calandria 50B vertically.
1st calandria 50A and the 2nd calandria 50B are for example by drive mechanisms such as cylinders（Omit diagram）Drive to connecing each other
Clip position that is near and clamping mould 10（With reference to Fig. 1 and Fig. 4）And separation point position separated from one another（With reference to Fig. 2）.
As shown in figure 4, the length direction of the 1st calandria 50A and the 2nd calandria 50B（Axially）Length be more than mould 10
Axial length（Upper/lower die 14 and cylindrical mold 12 in the state of upper/lower die 14 is installed on cylindrical mold 12 is closed
The axial length of meter）, the 1st calandria 50A and the 2nd calandria 50B is contacted with the axially overall outer peripheral face of mould 10
And heated.
1st calandria 50A and the 2nd calandria 50B each have multiple heating parts 52, its different portion in the longitudinal direction
Office generates heat, and can independently carry out temperature control.As shown in figure 5, multiple heating parts 52 have being shared by multiple heating parts 52
Shared distribution 54 and be respectively directed to multiple heating parts 52 each arrange independent distribution 56, by change to each
The magnitude of voltage of the input of hot portion 52（Or current value）, each heating part 52 can be controlled to different temperature.
In the present embodiment, as shown in figure 4, heating part 52 is made up of tri- heating parts of heating part 52A, 52B, 52C, send out
Hot portion 52A, 52B, 52C have the function of mainly being heated to mold 14A, cylindrical mold 12, lower mould 14B respectively.
（The manufacture method of rubber rollers）
Below, the manufacture method of the rubber rollers of the manufacture device 100 for using above-mentioned rubber rollers is illustrated.In the system of the rubber rollers
In making method, first, prepare the manufacture device 100 of rubber rollers（Preparatory process）.
Then, using the method for turning back of pitch tube described later, by the both ends of pitch tube 13 from cylindrical mold 12
The projection of two ends protrusion turns back to the outer peripheral face at the two ends of cylindrical mold 12（Turn back operation, reference picture 6-3（C））.
（The method of turning back of pitch tube 13）
Here, the method for turning back of explanation pitch tube 13.
Turning back in method in the pitch tube 13, such as Fig. 6-1（A）It is shown, so that the both ends of pitch tube 13 are from cylindrical shape
The mode of the two ends protrusion of mould 12, by pitch tube 13 inside of cylindrical mold 12 is inserted（Insertion operation）.In addition, pitch tube
13 length is set to make its both ends from cylindrical mold 12 to the axially external length exposed.
Then, such as Fig. 6-1（B）It is shown, by radially applying in circumferential whole circumference from the inside of pitch tube 13
Uniform power, and make at least axle in the projection 11 that the axial one end of pitch tube 13 protrudes from cylindrical mold 12 outside
The 11A plastic deformations of side part（1st deformation operation）.
Then, such as Fig. 6-1（C）It is shown, by radially applying in circumferential whole circumference from the inside of pitch tube 13
Uniform power, and make at least axial in the projection 11 that axial the other end of pitch tube 13 protrudes from cylindrical mold 12
Outboard Sections 11A plastic deformations（2nd deformation operation）.Now, the axially outer portion that there occurs plastic deformation of pitch tube 13
The diameter of the inner peripheral surface of 11A（Internal diameter）More than the external diameter of cylindrical mold 12.
The axial one end of pitch tube 13 and the plastic deformation of axial the other end, specifically, such as by being used as
The air expansion device of extension fixture（air picker）In the axial end portion of 60 insertion pitch tubes 13, until retainer 64 and resin
The axial end portion of pipe 13 is abutted, and is injected air etc. to the inside of the balloon portion 62 of the rubber system of air expansion device 60 and is expanded air
Prop 60 expands, so that the projection 11 of pitch tube 13 is expanded and carried out.
Then, such as Fig. 6-2（A）、（B）With Fig. 6-3（A）、（B）、（C）It is shown, make the part of the plastic deformation of pitch tube 13
Inner peripheral surface and internal diameter contact more than the whole circumference of the outer peripheral face of the cylinder part 64 of the external diameter of cylindrical mold 12, make cylinder
Part 64 is mobile towards the axially central authorities of cylindrical mold 12, by periphery from the projection 11 of pitch tube 13 to cylindrical mold 12
Face is turned back（Turn back operation）.
This turns back operation specifically, is carried out with following flow processs.
First, such as Fig. 6-2（A）It is shown, the inner peripheral surface of the plastic deformation part at the both ends of pitch tube 13 is made, it is big with internal diameter
In the outer peripheral face contact of the cylinder part 64 of the external diameter of cylindrical mold 12（1st operation）.
Specifically, the axial one end of cylinder part 64（The end of the side of cylindrical mold 12）Outer peripheral face formed sprayed
Sandblasting face 64A after sand, makes sandblasting face 64A contact with the inner peripheral surface of the plastic deformation part at the both ends of pitch tube 13.So
Afterwards, in this condition, the band of ring-type is installed on the outer peripheral face of pitch tube 13（Ring-shaped rubber）66, pitch tube 13 is maintained at
On cylinder part 64.
Then, such as Fig. 6-2（B）It is shown, make the cylinder part 64 of side mobile towards the axially central authorities of cylindrical mold 12, will
The projection 11 of the one end of pitch tube 13 turns back to the outer peripheral face of one end of cylindrical mold 12（2nd operation）.
Then, such as Fig. 6-3（A）It is shown, the axially external movement of the cylinder part 64 of opposite side towards cylindrical mold 12 is made,
At least eliminate the inside of cylindrical mold 12 pitch tube 13 it is lax after, such as Fig. 6-3（B）It is shown, in the cylindrical portion of opposite side
The vicinity of part 64, pitch tube 13 is pressed against on the inner peripheral surface of cylindrical mold 12（3rd operation）.
Specifically, by the way that air expansion device 80 is inserted into pitch tube 13 positioned at the axial direction of the other end of cylindrical mold 12
In end, inject air etc. to the inside of the balloon portion 82 of the rubber system of air expansion device 80 and expand air expansion device 80,
So as to pitch tube 13 is pressed against on the inner peripheral surface of the other end of cylindrical mold 12.
In addition, as shown in fig. 7, the 3rd operation can also be configured to, by entering between cylindrical mold 12 and pitch tube 13
Row decompression, so as to pitch tube 13 is pressed against on the inner peripheral surface of cylindrical mold 12.
Then, such as Fig. 6-3（C）It is shown, make the cylinder part 64 of opposite side mobile towards the axially central authorities of cylindrical mold 12,
The projection 11 of the other end of pitch tube 13 is turned back to the outer peripheral face of the other end of cylindrical mold 12（4th operation）.
So, by the projection 11 that the both ends of pitch tube 13 protruded from the two ends of cylindrical mold 12 to cylinder
The outer peripheral face at the two ends of shape mould 12 turns back, so as to as shown in figure 3, pitch tube 13 is installed in cylindrical mold 12.In addition,
Certainly now cylinder part 64, band 66 and air expansion device 80 are unloaded from pitch tube 13.
Then, as shown in Figure 3 and Figure 4, mold 14A and lower mould 14B are installed on the two ends of cylindrical mold 12, it is right
The two ends of the core bar 20 in insertion cylindrical mold 12 are kept（Installation procedure）.
Specifically, for example lower mould 14B is installed on into the bottom of cylindrical mold 12, then from cylindrical mold 12
Upper end side core bar 20 is inserted in cylindrical mold 12, by the patchhole 16 of the embedded lower mould 14B of the axle portion 24 of downside.
Then, while mold 14A is installed on into the upper end of cylindrical mold 12, while the axle portion 24 of upside is embedded in into mold
In the patchhole 16 of 14A.
Thus, as shown in figure 4, the contact surface 23 of upper/lower die 14 and the plug body portion being located at around upper and lower axle portion 24
22 end face 22A is abutted, therefore, the plug body portion 22 of core bar 20 is by cylindrical mold 12 coaxially around and by upper and lower mould
Tool 14 is clamped in the axial direction.In addition, now, the both ends of pitch tube 13 are also pressed against respectively cylindrical mold 12 and upper and lower mould
Between tool 14.
Then, with predetermined pressure from the injection half finished rubber of inlet 18 being formed on lower mould 14B（Liquid
Rubber）（Injection process）.Then, half finished rubber is filled in the outer peripheral face positioned at the plug body portion 22 of core bar 20 and installation
In the packing space S between pitch tube 13 on the inner peripheral surface 12A of cylindrical mold 12.
Then, as shown in Figure 1 and Figure 4, heater 50 is contacted with the outer peripheral face of mould 10, make the heating part of heater 50
The heating temp of 52A, 52B, 52C is different and mould 10 is heated, vulcanize half finished rubber（Vulcanization process）.
Specifically, after heating part 52A, 52B, 52C of heater 50 are preheated, clamp mould 10 and mould 10 is entered
Row heating.
So, by heating to half finished rubber, and harden half finished rubber.Half finished rubber is hardened and become
Vulcanite（Gum elastic）Afterwards, upper/lower die 14 is unloaded from cylindrical mold 12, is taken out from mould 10 and is formed with sulfuration
Rubber（Gum elastic）Core bar 20.So, the rubber rollers for being coated with pitch tube 13 are produced（Pitch tube coated roller）.
Here, Fig. 8（B）Show in vulcanization process, the heating temp of heating part 52A, 52B, 52C of heater 50 is
It is mutually synthermal（Such as 130 DEG C）Situation（Hereinafter referred to as equality of temperature heating, with reference to Fig. 8（B）Thick line）, heating part 52A, 52C
Heating temp（Such as 160 DEG C）Higher than the heating temp of heating part 52B（Such as 130 DEG C）Situation（Hereinafter referred to as end high temperature
Heating, reference Fig. 8（B）Double dot dash line）And the heating temp of heating part 52B（Such as 160 DEG C）Higher than heating part 52A,
The heating temp of 52C（Such as 130 DEG C）Situation（Hereinafter referred to as central part high-temperature heating, with reference to Fig. 8（B）Chain-dotted line）Under,
The external diameter of rubber rollers.
Such as Fig. 8（B）It is shown, if the external diameter of the axial end portion of the rubber rollers under equality of temperature heating state is set to into R1（Example
Such as 100mm）, then the external diameter of the axial end portion of the rubber rollers in the case of the high-temperature heating of end is " R1- Δ A（Such as 40 μm）", it is little
The external diameter of the rubber rollers under equality of temperature heating state.In addition, relative to the rubber rollers under equality of temperature heating state, end high-temperature heating
In the case of rubber rollers with close axial both ends, external diameter is gradually reduced.
On the other hand, if the external diameter of the rubber rollers under equality of temperature heating state is set to into R1（Such as 100mm）, then central part
The external diameter of the axial end portion of the rubber rollers in the case of high-temperature heating is " R1+ Δ B（Such as 40 μm）", more than equality of temperature heating state
Under rubber rollers external diameter.In addition, relative to the rubber rollers under equality of temperature heating state, the rubber in the case of central part high-temperature heating
With close axial both ends, external diameter gradually increases roller.
In addition, Fig. 8（B）In D1 ~ D7 and Fig. 8（A）The axial location correspondence of shown rubber rollers 200.D4 represents rubber
The axially central authorities of roller.
As it appears from the above, with heating temp（Heating-up temperature）The different and external diameter change of rubber rollers that produces is based on following
Principle.The thermosetting half finished rubber being filled in mould 10（Thermosetting resin）What is gradually hardened with heating
Stage, with temperature proportionally thermal expansion.Therefore, compared with the low part of heating-up temperature, heating-up temperature is higher to be partially located in
Volumetric expansion when hardening is carried out is larger, and amount of contraction when recovering room temperature is also larger.Thus, obtain than low temperature portion at high-temperature portion
Little shape.
（The effect of the manufacture method of the manufacture device 100 and rubber rollers of rubber rollers）
In the present embodiment, the 1st calandria 50A and the 2nd calandria 50B of heater 50 with exist including upper/lower die 14
The axially overall outer peripheral face of interior mould 10 is contacted and heated.Thus, with only cylindrical mold 12 is heated
Structure is compared, and can maintain higher by the temperature of upper/lower die 14, so as to suppress the axial both ends of the rubber rollers for producing
Sulfuration it is bad.
In addition, in the present embodiment, after in advance to the heating of heater 50, mould 10 is heated with heater 50, therefore,
Cure time shortens, and improves the productivity ratio of rubber rollers.
Additionally, existing（Japanese Unexamined Patent Publication 2007-15157 publications）Structure in, heater 50 and mould 10 are one
, therefore, if heated during half finished rubber is filled in mould 10, the heat time heating time of portion becomes
Change, needs begin to warm up after end-of-fill.On the other hand, in the present embodiment, because heater 50 and mould 10 are single
Solely constitute, therefore, even if heating to heater 50 in advance before terminating to the filling half finished rubber of mould 10, also not
The problem in existing structure can be produced.
In addition, in the present embodiment, cylindrical mold 12, mold 14A are identical with the external diameter of lower mould 14B, therefore,
As long as the inner peripheral surface of the heater 50 contacted with the outer peripheral face of cylindrical mold 12, mold 14A and lower mould 14B is also vertically
Form certain diameter, the simple structure of heater 50.
In addition, in the present embodiment, can be with the heating temperature of heating part 52A, 52B, 52C of independently controlled heater 50
Degree, therefore, it can the external diameter of the rubber rollers manufactured by partly changing vertically.
（The effect of method of turning back）
In the present embodiment, in the 1st deformation operation and the 2nd deformation operation, from the inside of pitch tube 13 in circumference
Radially apply uniform power in whole circumference, make the plastic deformation of projection 11 of pitch tube 13, therefore, with utilization from resin
Pawl at multiple positions in the circumference of the inside of pipe 13 etc. compares the situation of the plastic deformation of projection 11 of pitch tube 13,
Suppress the damage of pitch tube 13.
In addition, in operation of turning back, making the inner peripheral surface of the plastic deformation part of pitch tube 13 and the periphery of cylinder part 64
The whole circumference contact in face, the projection 11 of pitch tube 13 is turned back on the outer peripheral face of cylindrical mold 12, therefore, in tree
The circumferential power applied on the whole when turning back of fat pipe 13, suppresses the damage of pitch tube 13.
Additionally, in the 3rd operation of operation of turning back, making the cylinder part 64 of opposite side outside towards the axle of cylindrical mold 12
After side shifting, in the vicinity of the cylinder part 64 of opposite side, pitch tube 13 is pressed against in cylindrical mold 12, therefore, suppress
The fold of pitch tube 13.
So, due to inhibiting the damaged and fold of pitch tube 13, the rubber rollers for producing be this improves（Pitch tube
Coated roller）Yield rate.
（The variation of the manufacture device 100 of rubber rollers）
The cylindrical mold 12 of the mould 10 in the manufacture device 100 of rubber rollers, mold 14A and lower mould 14B it is outer
Footpath is identical, but it is also possible to form cylindrical mold 12, the mold 14A structure different with the external diameter of lower mould 14B.For example, may be used
With the structure that the external diameter for being mold 14A and lower mould 14B is more than cylindrical mold 12.In addition, cylindrical mold 12, on mould
In tool 14A different with the external diameter of lower mould 14B structures, heater 50 is configured to the internal diameter of inner peripheral surface vertically and locally not
Together, so that heater 50 is contacted with the outer peripheral face of cylindrical mold 12, mold 14A and lower mould 14B.
Additionally, the heater 50 in the manufacture device 100 of rubber rollers is not limited to said structure.For example, multiple heating parts
52 can also dependently carry out temperature control, but forming unification carries out temperature controlled structure.That is, heater 50 can also
It is the axial direction of mould 10 is integrally heated structure with uniform temperature.
In addition, heater 50 can also be with mould 10（Cylindrical mold 12, upper/lower die 14）It is wholely set.In addition, plus
Hot device 50 can also not to mould 10（Cylindrical mold 12, upper/lower die 14）Axial direction integrally heated, but in axle
Upwards partly to mould 10（Cylindrical mold 12, upper/lower die 14）Heated.
（The variation of the manufacture method of rubber rollers）
In above-mentioned heating process, make the heating temp of heating part 52A, 52B, 52C of heater 50 different and to mould
10 are heated, but it is also possible to, make the heating temp of heating part 52A, 52B, 52C with the external diameter of the rubber rollers to be obtained accordingly
Necessarily mould 10 is heated.
（The variation of the method for turning back of pitch tube 13）
Turn back in method above-mentioned, by the two ends of pitch tube 13 after expanding the projection 11 at the both ends of pitch tube 13
The protuberance 11 in portion is turned back, but is not limited to this, it is also possible to which the projection 11 for making the one end of pitch tube 13 is expanded
The projection 11 of the one end is turned back afterwards, after then expanding again the projection 11 of the other end of pitch tube 13
The projection 11 of the other end is turned back.
The present invention is not limited to above-mentioned embodiment, can carry out various modifications, change and improve.For example, it is also possible to
The above-mentioned variation for illustrating suitably is carried out into multiple combination and is constituted.
Claims (2)
1. a kind of method of turning back of pitch tube, it is characterised in that with following operations：
Insertion operation, in the operation, in the way of the both ends for making pitch tube are protruded from the two ends of cylindrical mold, by resin
Pipe inserts the inside of the cylindrical mold；
Deformation operation, in the operation, radially applies uniform from the inside of above-mentioned pitch tube in circumferential whole circumference
Power, and become at least axially outer portion plasticity from the projection of above-mentioned cylindrical mold protrusion of above-mentioned pitch tube
Shape；And
Turn back operation, in the operation, make the inner peripheral surface of the part of the plastic deformation of above-mentioned pitch tube, with internal diameter above-mentioned circle is more than
The outer peripheral face contact of the cylinder part of the external diameter of cylindrical mould, makes above-mentioned cylinder part towards the axial centre of above-mentioned cylindrical mold
It is mobile, the above-mentioned projection of above-mentioned pitch tube is turned back to the outer peripheral face of above-mentioned cylindrical mold,
The operation of turning back has following operations：
1st operation, in the operation, makes the inner peripheral surface of the part of the plastic deformation at the both ends of above-mentioned pitch tube, big with internal diameter
In the outer peripheral face contact of the cylinder part of the external diameter of above-mentioned cylindrical mold；
2nd operation, in the operation, the above-mentioned cylinder part for making side is moved towards the axial centre of above-mentioned cylindrical mold, will
The above-mentioned projection of the one end of above-mentioned pitch tube turns back to the outer peripheral face of one end of above-mentioned cylindrical mold；
3rd operation, the operation makes the above-mentioned cylinder part of opposite side towards above-mentioned cylindrical mold after above-mentioned 2nd operation
Axially external movement, then above-mentioned opposite side cylinder part vicinity, above-mentioned pitch tube is pressed against into above-mentioned cylindrical shape mould
On tool；And
4th operation, the operation makes the above-mentioned cylinder part of opposite side towards above-mentioned cylindrical mold after above-mentioned 3rd operation
Axial centre is moved, by the other end from the above-mentioned projection of the other end of above-mentioned pitch tube to above-mentioned cylindrical mold it is outer
Side face turns back.
2. a kind of manufacture method of pitch tube coated roller, it is characterised in that with following operations：
Turn back operation, in the operation, using the method for turning back of the pitch tube described in claim 1, by the two of above-mentioned pitch tube
The above-mentioned projection of end turns back to the outer peripheral face at the two ends of above-mentioned cylindrical mold；
Installation procedure, in the operation, by the above-mentioned pitch tube after the two ends of above-mentioned cylindrical mold are turned back and insertion
The end mold that core bar in the pitch tube is kept, installs to the two ends of above-mentioned cylindrical mold；
Injection process, in the operation, from above-mentioned end mold elastomeric material is injected；And
Vulcanization process, in the operation, heats to above-mentioned cylindrical mold and above-mentioned end mold, makes above-mentioned elastomeric material
Sulfuration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-026540 | 2012-02-09 | ||
| JP2012026540A JP5019005B1 (en) | 2012-02-09 | 2012-02-09 | Resin tube folding method, resin tube coating roll manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103240816A CN103240816A (en) | 2013-08-14 |
| CN103240816B true CN103240816B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210526216.2A Active CN103240816B (en) | 2012-02-09 | 2012-12-07 | Folding method of resin pipe, and manufacturing method of resin pipe coated roller |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5019005B1 (en) |
| CN (1) | CN103240816B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6582808B2 (en) * | 2015-09-25 | 2019-10-02 | 富士ゼロックス株式会社 | Conveying device and conveying method |
| US10189233B2 (en) * | 2015-10-30 | 2019-01-29 | Canon Kabushiki Kaisha | Method for fixing resin tube to die and manufacturing method for resin-tube covered roller |
| CN107825693A (en) * | 2017-11-29 | 2018-03-23 | 王小刚 | A kind of plastic tube mouth of pipe extension fixture and application method |
| CN113442478A (en) * | 2021-06-29 | 2021-09-28 | 上海伽材新材料科技有限公司 | Forming process of silica gel formed on surface of composite material thin-wall special-shaped pipe |
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|---|---|---|---|---|
| CN1030047A (en) * | 1987-05-29 | 1989-01-04 | 三菱树脂株式会社 | Manufacturing is through the method for the concrete reinforced pipe of lining |
| JPH03215021A (en) * | 1990-01-19 | 1991-09-20 | Showa Electric Wire & Cable Co Ltd | Folding back device of tube for roller |
| JPH05450A (en) * | 1991-06-21 | 1993-01-08 | Sekisui Chem Co Ltd | Manufacture of faucet section for metal tube and composite tube |
| JPH05212784A (en) * | 1992-01-31 | 1993-08-24 | Showa Electric Wire & Cable Co Ltd | Tube folding back device |
| JPH06106610A (en) * | 1992-09-28 | 1994-04-19 | Showa Electric Wire & Cable Co Ltd | Tube folding method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329714B1 (en) * | 1969-09-16 | 1978-08-22 | ||
| JPS60104314A (en) * | 1983-11-11 | 1985-06-08 | Mitsubishi Plastics Ind Ltd | Mold for folding end of synthetic tube |
| JP3140815B2 (en) * | 1991-10-29 | 2001-03-05 | 昭和電線電纜株式会社 | Tube roller manufacturing equipment |
| JP3207483B2 (en) * | 1992-02-13 | 2001-09-10 | 昭和電線電纜株式会社 | Tube folding device |
| JP2000301610A (en) * | 1999-04-16 | 2000-10-31 | Suzuka Fuji Xerox Co Ltd | Method and apparatus for mounting opening of resin tube |
| JP4819439B2 (en) * | 2005-08-29 | 2011-11-24 | 株式会社イノアックコーポレーション | Method for manufacturing foamed elastic roller and molding die for foamed elastic roller |
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2012
- 2012-02-09 JP JP2012026540A patent/JP5019005B1/en not_active Expired - Fee Related
- 2012-12-07 CN CN201210526216.2A patent/CN103240816B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030047A (en) * | 1987-05-29 | 1989-01-04 | 三菱树脂株式会社 | Manufacturing is through the method for the concrete reinforced pipe of lining |
| JPH03215021A (en) * | 1990-01-19 | 1991-09-20 | Showa Electric Wire & Cable Co Ltd | Folding back device of tube for roller |
| JPH05450A (en) * | 1991-06-21 | 1993-01-08 | Sekisui Chem Co Ltd | Manufacture of faucet section for metal tube and composite tube |
| JPH05212784A (en) * | 1992-01-31 | 1993-08-24 | Showa Electric Wire & Cable Co Ltd | Tube folding back device |
| JPH06106610A (en) * | 1992-09-28 | 1994-04-19 | Showa Electric Wire & Cable Co Ltd | Tube folding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5019005B1 (en) | 2012-09-05 |
| CN103240816A (en) | 2013-08-14 |
| JP2013163285A (en) | 2013-08-22 |
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