CN209036847U - A kind of rubber product foam-in-mould molding machine - Google Patents

Abstract

The utility model discloses a kind of rubber product foam-in-mould molding machines, belong to rubber product technology field.The utility model includes die cylinder, upper bracket, upper mold half, lower mold half, lower bracket, support and die cavity increase-volume oil cylinder, in which: the support, lower bracket and lower mold half are fixedly connected sequentially from the bottom to top；Right above the lower mold half, the die cylinder piston rod of the upper mold half, upper bracket and die cylinder is fixedly connected sequentially from the bottom to top；The die cylinder and die cavity increase-volume oil cylinder are both secured to the top of support；The lower mold half and upper mold half die orifice are opposite and are equipped with, and the die cavity formed after molding is can increase-volume die cavity.The utility model die cavity can increase, and can carry out increase-volume to die cavity as needed, and two techniques of foaming and vulcanization are completed in the same die cavity, can effectively reduce cost, molding time, reduce energy consumption, and can be reduced discharge amount of exhaust gas.

Description

A kind of rubber product foam-in-mould molding machine

Technical field

The utility model belongs to rubber product technology field, specifically, being related to a kind of rubber product foam-in-mould Molding machine.

Background technique

Rubber powder and reclaimed rubber are the recyclings of waste rubber goods, and the difference of the two is only in that rubber powder is useless before desulfurization Old rubber, reclaimed rubber are the waste old after desulfurization, for environmental requirement, carry out physical desulfurization technique, i.e. double screw extruder Foaming agent is added in sizing material sulfur removal technology from double screw extruder feed opening, ultimately forms granular foaming regeneration sizing material.

Under normal circumstances, the substance of the high molecular materials hair engaging aperture such as rubber is made all to can be used as foaming agent, physical blowing is one The common rubber pange technique of kind, principle is that foaming agent is dissolved in high polymer, in the pressure reduction or stabilization of system Becoming gas when raising makes the substance of high polymer volume expansion and foaming of boiling, its advantage is that residue decomposition is not generated, it will not Air or corrosion process equipment are polluted, but needs to increase the special installation (continuous frothing machine) to foam under high-pressure foam, for hair It is particularly severe to steep equipment requirement, uses extremely inconvenient, also increases cost of equipment.

Blown rubber formulation process flow is to carry out rubber pange using continuous frothing machine --- injection or extrusion are molded into Final product, technique is cumbersome, and equipment investment is big for type --- vulcanization ---, and maintenance of equipment expense is high.

Through retrieving, Chinese patent publication No. CN 105330985 B, publication date 2018.04.24, denomination of invention: Yi Zhongyi Kind rubber material production technology, in particular to a kind of salt bath vulcanization technique of ethylene propylene diene rubber foaming profile.A kind of ternary second The salt bath vulcanization technique of third rubber pange profile, which includes the following steps: after taking foaming raw material mechanical mixture, through extruder After salt bath sulfur foam, ethylene propylene diene rubber foaming profile is made in extrusion molding；The foaming raw material includes EPDM Rubber, naphthenic oil, carbon black, calcium carbonate, stearic acid, zinc oxide, sulphur, promotor dialkyl dithiocarbamate, azo Diformamide.Two mechanisms of invention foaming and vulcanization, two steps separately carry out, and exhaust gas are easy to produce, moreover, utilization rate of equipment and installations is not It is high.

Utility model content

1. utility model technical problems to be solved

It is existed in the prior art in foaming and sulfuration process to overcome, technique is cumbersome, and equipment investment is big and is easy to produce The problem of exhaust gas, the utility model provide a kind of rubber product foam-in-mould molding machine.The utility model is by the mould after molding The mold that chamber foams and vulcanizes as reclaimed rubber pellet, and by die cylinder and the collaboration of die cavity increase-volume oil cylinder to sizing material in mould Pressurization temperature, achievees the effect that foaming and vulcanization, can reduce cost, molding time, reduce energy consumption, and can reduce rubber product Rejection rate reduces discharge amount of exhaust gas.

2. technical solution

To solve the above problems, the utility model adopts the following technical solution:

A kind of rubber product foam-in-mould molding machine, including die cylinder, upper bracket, upper mold half, lower mold half, under Bracket, support and die cavity increase-volume oil cylinder, in which: the support, lower bracket and lower mold half are fixedly connected sequentially from the bottom to top；? Right above the lower mold half, the die cylinder piston rod of the upper mold half, upper bracket and die cylinder is from the bottom to top successively It is fixedly connected；The die cylinder and die cavity increase-volume oil cylinder are both secured to the top of support；The lower mold half and upper mold half Die orifice is opposite and is equipped with, the die cavity formed after molding be can increase-volume die cavity can after the reclaimed rubber pellet investment with foaming agent Pressure required for vulcanizing is generated according to sizing material itself foaming as needed to increase die cavity moreover, because die cavity can increase Hold, two techniques of foaming and vulcanization completed in the same die cavity, can effectively reduce cost, molding time, reduces energy consumption, And it can be reduced discharge amount of exhaust gas.

Further embodiment, can increase-volume die cavity risen in die cavity by the increasing die cavity piston rod of die cavity increase-volume oil cylinder come real It is existing, it can be required according to the different process of rubber product, adjust the volume of increase-volume.

Further embodiment, the section for increasing the bottom of die cavity piston rod is in inverted T-shaped structure, is matched with the inner wall gap of die cavity It closes, to reach sealing effect, can be " zero " clearance fit, the shape of rubber product, such as arc are agreed in bottom face edge； It is fixed with the membrane cavity core of tubular at the die cavity geometric center, avoids overflowing in sizing material after increase-volume；The increasing die cavity piston rod passes through Mold core is connected with after upper bracket；The mold core and membrane cavity core clearance fit, can be microgap, even " zero " clearance fit, Improve leakproofness；It is described increase die cavity piston rod bottom and mold core respectively in die cavity and membrane cavity in-core sealed type elevating, such as Increase bottom and the mold core outer rim build-in sealing ring of die cavity piston rod.

Further scheme further includes the upper beam for the side of being fixed on the support, the die cavity increase-volume oil cylinder and molding oil Cylinder is supported on upper beam, the increasing die cavity piston rod and die cylinder piston rod both pass through after upper beam respectively with upper bracket It is fixedly connected with mold core, improves the stability and guiding performance of the lifting of 2 piston rods.

Further scheme, die cylinder be it is multiple, be uniformly and symmetrically distributed around die cavity increase-volume oil cylinder, and synchronous fortune Row, can reach the effect uniformly to press.

Further scheme is respectively arranged with upper heater and lower heater in upper bracket and lower bracket, can be to mold It directly heats, without increasing additional heat source when foaming and vulcanization, heating efficiency is high, and is adjusted.

Further scheme on the outside of die cylinder, is additionally provided with strut on upper beam；The strut sequentially passes through cross After beam, upper bracket and after lower bracket, is fixed at its both ends by fixture nut, play the role of guiding and support.

Further scheme, strut be it is multiple, be uniformly distributed outside die cylinder, play the work of multi-guide and support With.

Further scheme, increasing die cavity piston rod with mold core is to be detachably connected, the shapes and sizes contract of the mold core The shape for closing rubber product needs to select the mold core of adaptation according to product.

A kind of moulding process of rubber product foam-in-mould molding machine, basic step are as follows:

Step 1: die sinking: on starting die cylinder and die cavity increase-volume oil cylinder, die cylinder piston rod and increasing die cavity piston rod It rises, opens upper mold half and lower mold half, the sizing material for being mixed with foaming agent is added；

Step 2: molding: under starting die cylinder and die cavity increase-volume oil cylinder, die cylinder piston rod and increasing die cavity piston rod Drop, is closed upper mold half and lower mold half forms die cavity；

Step 3: heating: starting upper heater and lower heater carry out heating hair to upper mold half and lower mold half respectively Bubble；

Step 4: pressurization presulfurization: die cylinder and the collaboration of die cavity increase-volume oil cylinder persistently press to die cavity up to sizing material half Presulfurization state is completed in vulcanization；

Step 5: die cavity increase-volume: quick start die cavity increase-volume oil cylinder increases die cavity piston rod and rises, and band moving-mould-core rises, mould Cavity volume increase-volume；

Step 6: vulcanization: continue temperature-pressure, the rubber product in die cavity is vulcanized；

Step 7: die sinking: on starting die cylinder and die cavity increase-volume oil cylinder, die cylinder piston rod and increasing die cavity piston rod It rises, takes out rubber product.

3. beneficial effect

Compared with prior art, the utility model has the following obvious advantages:

(1) the rubber product foam-in-mould molding machine of the utility model need to only carry out an existing rubber moulding press Transformation, does not need to be equipped with other ancillary equipments, reclaimed rubber pellet is directly thrown into die cavity, completes reclaimed rubber sizing material product Disposable foam-in-mould vulcanizes die press technology for forming, can be required according to the different process of rubber product, technological parameter needed for adjusting: Cavity pressure variation, mould-cavity temperature variation, reach product optimum efficiency, and can eliminate shipping expense between rubber product process； It furthermore reduces reheating bring noxious gas emission, reduces the rejection rate of reheating bring rubber product, Reduce reheating pressurization bring energy consumption, achievees the effect that environmental protection and energy saving；

(2) the rubber product foam-in-mould molding machine of the utility model adjusts increase-volume volume by increasing die cavity piston rod, Corresponding controllable adjusting can be carried out according to different rubber products, it is easy to operate；

(3) the rubber product foam-in-mould molding machine of the utility model, the setting of membrane cavity core, can avoid increase-volume when inside Flash and influence pressure adjusting, and be able to maintain the shape of product；

(4) the rubber product foam-in-mould molding machine of the utility model, the setting of upper beam can effectively improve 2 work The stability and guiding performance of stopper rod lifting, avoid bias；

(5) the rubber product foam-in-mould molding machine of the utility model, symmetrical and synchronous operation multiple moldings Oil cylinder can reach the effect uniformly to press, effectively avoid substandard products；

(6) the rubber product foam-in-mould molding machine of the utility model, upper heater and lower heater can be straight to mold Heating is connect, without increasing additional heat source when foaming and vulcanization, heating efficiency is high, and can easily adjust control；

(7) the rubber product foam-in-mould molding machine of the utility model, strut and upper beam synergistic effect play guiding With the effect of support；

(8) the rubber product foam-in-mould molding machine of the utility model, multiple struts being uniformly and symmetrically distributed play more The effect for being redirected and supporting improves the stability of whole device；

(9) the rubber product foam-in-mould molding machine of the utility model, the shapes and sizes of mold core agree with rubber product Shape, according to product need select adaptation mold core；

(10) moulding process of the rubber product foam-in-mould molding machine of the utility model, can increase-volume die cavity cavity it is big Small related with foam process requirement, the sizing material for being mixed with foaming agent is put into die cavity, Guan Bi mould by opening mold, and heating adds Pressure after the completion of the presulfurization stage, does not have to opening mold, and mold inner-cavity is controlled by oil cylinder, quickly increases volume and (it is final to reach product Size requirement), make blown rubber formulation complete cure expand, make rubber swelling formed spongy state, then carry out pressure maintaining, heat preservation, The time is protected, cures requirements are reached, stablizes it in final size, completes whole sulfurating stage, product is taken out in die sinking, easy to operate.

Detailed description of the invention

Fig. 1 is the die opening state structural schematic diagram of the utility model；

Fig. 2 is the molding status architecture schematic diagram of the utility model；

Fig. 3 is to mold state diagram after die cavity amplification in the presulfurization stage of the utility model；

Fig. 4 is to increase state diagram after the amplification of molding die cavity after die cavity piston rod is promoted the presulfurization stage of the utility model；

Fig. 5 is that the whole sulfurating stage of the utility model molds state diagram after die cavity amplification.

In figure: 1, die cylinder；2, die cavity increase-volume oil cylinder；3, upper beam；4, upper bracket；5, upper mold half；6, rubber system Product；7, lower mold half；8, mold core；9, lower bracket；10, support；11, die cylinder piston rod；12, sizing material；13, strut；14, film Chamber；21, increase die cavity piston rod；41, upper heater；81, membrane cavity core；91, lower heater；131, fixture nut.

Specific embodiment

For the content for further appreciating that the utility model, this utility model is described in detail in conjunction with attached drawing.

Embodiment 1

The rubber product foam-in-mould molding machine of the present embodiment, as shown in Figure 1, 2, including die cylinder 1, upper bracket 4, Upper mold half 5, lower mold half 7, lower bracket 9, support 10 and die cavity increase-volume oil cylinder 2, in which: the support 10, lower bracket 9 and under Half mold 7 is fixedly connected sequentially from the bottom to top；Right above the lower mold half 7, the upper mold half 5, upper bracket 4 and molding The die cylinder piston rod 11 of oil cylinder 1 is fixedly connected sequentially from the bottom to top；The die cylinder 1 and die cavity increase-volume oil cylinder 2 are solid Due to the top of support 10；The lower mold half 7 and 5 die orifice of upper mold half are opposite and are equipped with, the die cavity formed after molding 14 is can increase-volume die cavitys.

The rubber product foam-in-mould molding machine of the present embodiment can complete increase-volume in a mold, with foaming agent After reclaimed rubber pellet puts into die cavity 14, can be foamed to generate according to sizing material itself vulcanizes required pressure, moreover, because die cavity 14 It can increase, increase-volume is carried out to die cavity 14 as needed, two techniques of foaming and vulcanization are completed in the same die cavity die cavity 14, it can It effectively reduces cost expense, molding time, reduce energy consumption, and can be reduced discharge amount of exhaust gas.

Embodiment 2

The rubber product foam-in-mould molding machine of the present embodiment, basic structure are theed improvement is that with embodiment 1: can Increase-volume die cavity is risen by the increasing die cavity piston rod 21 of die cavity increase-volume oil cylinder 2 in die cavity 14 to realize, can be according to rubber product 6 Different process requirement, adjust the volume of increase-volume.

Embodiment 3

The rubber product foam-in-mould molding machine of the present embodiment, basic structure are theed improvement is that with embodiment 2: being increased The section of the bottom of die cavity piston rod 21 is in inverted T-shaped structure, and the inner wall clearance fit with die cavity 14 can to reach sealing effect To be " zero " clearance fit, the shape of rubber product 6, such as arc are agreed in bottom face edge；14 geometric center of die cavity Place is fixed with the membrane cavity core 81 of tubular, avoids overflowing in sizing material after increase-volume；The increasing die cavity piston rod 21 connects after passing through upper bracket 4 There is mold core 8；81 clearance fit of the mold core 8 and membrane cavity core, can be microgap, even " zero " clearance fit, improve sealing Property；The bottom for increasing die cavity piston rod 21 and mold core 8 are gone up and down in die cavity 14 and 81 internal sealed of membrane cavity core respectively, for example are being increased The 8 outer rim build-in sealing ring of bottom and mold core of die cavity piston rod 21.

Embodiment 4

The rubber product foam-in-mould molding machine of the present embodiment, basic structure are theed improvement is that with embodiment 3: such as It further include the upper beam 3 for being fixed on 10 top of support, the die cavity increase-volume oil cylinder 2 and die cylinder 1 are supported in shown in Fig. 2 On upper beam 3, the increasing die cavity piston rod 21 and die cylinder piston rod 11 both pass through after upper beam 3 respectively with upper bracket 4 and Mold core 8 is fixedly connected, and improves the stability and guiding performance of the lifting of 2 piston rods.Die cylinder 1 be it is multiple, such as 4, in mould It is symmetrically symmetrical around chamber increase-volume oil cylinder 2, and run simultaneously, it can reach the effect uniformly to press.Upper bracket 4 and lower branch It is respectively arranged with upper heater 41 and lower heater 91 in frame 9, mold can be directly heated, without increasing volume when foaming and vulcanization Outer heat source, heating efficiency is high, and is adjusted.

Embodiment 5

The rubber product foam-in-mould molding machine of the present embodiment, basic structure are theed improvement is that with embodiment 4: being closed On the outside of mould oil cylinder 1, strut 13 is additionally provided on upper beam 3；The strut 31 sequentially passes through after upper beam 3, upper bracket 4 and lower branch It is fixed by fixture nut 131 at its both ends after frame 9, play the role of guiding and support.Strut 31 can be multiple, such as 4 It is a, it is uniformly and symmetrically distributed outside die cylinder 1, plays the role of multi-guide and support.Increasing die cavity piston rod 21 with mold core 8 is It is detachably connected, the shapes and sizes of the mold core 8 agree with the shape of rubber product 6, need to select the mould of adaptation according to product Core 8, increasing is arc at the bottom margin of die cavity piston rod 21.

The moulding process of the rubber product foam-in-mould molding machine of the present embodiment, can be used for producing foaming solid tyre, Step are as follows:

Step 1: die sinking: starting die cylinder 1 and die cavity increase-volume oil cylinder 2, die cylinder piston rod 11 and increasing die cavity piston Bar 21 rises, and opens upper mold half 5 and lower mold half 7, and the reclaimed rubber pellet for being mixed with foaming agent is added；

Step 2: molding: starting die cylinder 1 and die cavity increase-volume oil cylinder 2, die cylinder piston rod 11 and increasing die cavity piston Bar 21 declines, as shown in figure 3, closure upper mold half 5 and lower mold half 7 form die cavity 14, is full of in die cavity 14 and is mixed with foaming agent Sizing material 12；

Step 3: heating: starting upper heater 41 and lower heater 91 respectively carry out upper mold half 5 and lower mold half 7 Foamable；

Step 4: pressurization presulfurization: die cylinder 1 and the collaboration of die cavity increase-volume oil cylinder 2 persistently press until glue to die cavity 14 Expect 12 semi-cures, completes presulfurization state；

Step 5: die cavity increase-volume: as shown in figure 4, quick start die cavity increase-volume oil cylinder 2, increases die cavity piston rod 21 and rises, band Moving-mould-core 8 rises, the instantaneous increase-volume of 14 volume of die cavity, as shown in figure 5, the sizing material of foaming is full of the die cavity 14 after increase-volume immediately, Form the shape of foaming solid tyre；

Step 6: vulcanization: continue temperature-pressure, the rubber product 6 in die cavity 14 is vulcanized, curing temperature: 100- 200℃；Sulfide stress: 1.0~10MPa requires to be adjusted accordingly according to the different process of rubber product, and temperature passes through upper Heater 41 and lower heater 91 adjust control；Pressure adjusts control by die cavity increase-volume oil cylinder 2 and die cylinder 1；

Step 7: die sinking: starting die cylinder 1 and die cavity increase-volume oil cylinder 2, die cylinder piston rod 11 and increasing die cavity piston Bar 21 rises, and takes out foaming solid tyre.

The rubber product foam-in-mould molding machine of the present embodiment, reclaimed rubber pellet is directly thrown into die cavity 14, complete Vulcanize die press technology for forming at the disposable foam-in-mould of reclaimed rubber sizing material product, can be wanted according to the different process of rubber product Ask, technological parameter needed for adjusting: cavity pressure variation, mould-cavity temperature variation reach the optimum efficiency of foaming solid tyre, and energy The shipping expense between foaming solid tyre production process is eliminated, reheating bring noxious gas emission is also reduced, is dropped The low rejection rate of reheating bring rubber product reduces reheating pressurization bring energy consumption, has reached ring Protect energy-efficient effect；Moreover, not having to opening mold after the completion of the presulfurization stage, mold inner-cavity is controlled by oil cylinder, is quickly increased and is held Product (reaches the requirement of product final size), expands blown rubber formulation complete cure, and rubber swelling is made to form spongy state, then It carries out pressure maintaining, heat preservation, protect the time, reach cures requirements, stablize it in final size, complete whole sulfurating stage, be opened, take out Product, it is easy to operate.

Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field Those of ordinary skill enlightened by it, without departing from the spirit of the invention, not inventively design with should The similar frame mode of technical solution and embodiment, all should belong to the protection range of the utility model.

Claims (9)

1. a kind of rubber product foam-in-mould molding machine, including die cylinder (1), upper bracket (4), upper mold half (5), lower half Mold (7), lower bracket (9) and support (10), which is characterized in that further include die cavity increase-volume oil cylinder (2), in which:

The support (10), lower bracket (9) and lower mold half (7) are fixedly connected sequentially from the bottom to top；In the lower mold half (7) Surface, the die cylinder piston rod (11) of the upper mold half (5), upper bracket (4) and die cylinder (1) is from the bottom to top successively It is fixedly connected；The die cylinder (1) and die cavity increase-volume oil cylinder (2) are both secured to the top of support (10)；The lower mold half (7) and upper mold half (5) die orifice is opposite and be equipped with, and the die cavity (14) formed after molding is can increase-volume die cavity.

2. rubber product foam-in-mould molding machine as described in claim 1, which is characterized in that it is described can increase-volume die cavity pass through The increasing die cavity piston rod (21) of die cavity increase-volume oil cylinder (2) rises in die cavity (14) to realize.

3. rubber product foam-in-mould molding machine as claimed in claim 2, which is characterized in that the increasing die cavity piston rod (21) section of bottom is in inverted T-shaped structure, and the inner wall clearance fit with die cavity (14), rubber product is agreed in bottom face edge (6) shape；The membrane cavity core (81) of tubular is fixed at die cavity (14) geometric center；The increasing die cavity piston rod (21) is worn Mold core (8) are connected with after crossing upper bracket (4)；The mold core (8) and membrane cavity core (81) clearance fit；The increasing die cavity piston rod (21) bottom and mold core (8) is gone up and down in die cavity (14) and membrane cavity core (81) internal sealed respectively.

4. rubber product foam-in-mould molding machine as claimed in claim 3, which is characterized in that further include being fixed on support (10) upper beam (3) above, the die cavity increase-volume oil cylinder (2) and die cylinder (1) are supported on upper beam (3), described Increase die cavity piston rod (21) and die cylinder piston rod (11) both pass through after upper beam (3) respectively with upper bracket (4) and mold core (8) It is fixedly connected.

5. rubber product foam-in-mould molding machine as claimed in claim 3, which is characterized in that the die cylinder (1) is It is multiple, it is uniformly and symmetrically distributed around die cavity increase-volume oil cylinder (2), and run simultaneously.

6. rubber product foam-in-mould molding machine as claimed in claim 5, which is characterized in that the upper bracket (4) and under Upper heater (41) and lower heater (91) are respectively arranged in bracket (9).

7. rubber product foam-in-mould molding machine as claimed in claim 6, which is characterized in that the die cylinder (1) is outside Side is additionally provided with strut (13) on upper beam (3)；The strut (13) sequentially pass through upper beam (3), upper bracket (4) afterwards and under It is fixed by fixture nut (131) at its both ends after bracket (9).

8. rubber product foam-in-mould molding machine as claimed in claim 7, which is characterized in that the strut (13) is more It is a, it is uniformly distributed outside die cylinder (1).

9. rubber product foam-in-mould molding machine as claimed in claim 7, which is characterized in that the increasing die cavity piston rod It (21) is to be detachably connected with mold core (8), the shapes and sizes of the mold core (8) agree with the shape of rubber product (6).