CN102561270B - Production process of seamless rubber dam bag - Google Patents

Abstract

The invention discloses a production process of a seamless rubber dam bag, relates to the production process of the high-strength seamless rubber dam bag and provides the production process of the seamless rubber dam bag which have the advantages of high structural strength, overall flatness, convenience in anchorage and capability of avoiding the emergence of resonance effect during the use. A long blank comprising outer-layer glue, intermediate-layer glue, inner-layer glue and a framework layer is adopted, and the processing comprises the following steps of (1) preparing joints (2) performing primary vulcanization; (3) cutting; (4) lapping, and (5) performing secondary vulcanization. According to the production process disclosed by the invention, the vulcanization is performed twice, the vulcanization is firstly performed on the middle part of the long blank and raw edges are left on the two sides; then the cutting is performed, and short blanks are obtained after cutting; the two side edges of the short blanks are of the raw edges, the joints in the complementary shapes are also arranged on the two side edges, the joints of the two short blanks are butted, the secondary vulcanization is performed, and the adjacent raw edges of the adjacent two short blanks are vulcanized to vulcanized edges, namely the material is consistent with that of the middle part after vulcanization; and a bag body of the rubber dam bag with a radial seam is finally prepared.

Description

A kind of without seam rubber dam bag production technology

Technical field

The present invention relates to high strength without the production technology of seam rubber dam bag.

Background technology

Rubber dam, claims again part for rubber dam, is to do stress frame with high strength synthetic fibre fabric; inside and outside coating rubber is made topping; be processed into adhesive plaster, then be anchored in the dam bag that becomes closed on base plate, the pocket type checkdam its inflation being formed by filling row pipeline water (gas).Dam crest can overflow, and can regulate as required height of dam, controls upper pond level, to bring into play the benefits such as irrigation, generating, shipping, flood control, gear tide.

The production technology of rubber dam bag is that cloth whole sulfuration in dam is ripe at present, then overlap joint.And overlapping the slot is generally parallel to water (flow) direction; According to above-mentioned technique, inevitably seam crossing thickness can be greater than the thickness of dam cloth.

Someone proposes corrective measure for this reason, the disclosed publication number CN101565939A of the 2009.10.28. of State Intellectual Property Office, title " a kind of rubber dam bag of latitudinal lap-seam and manufacturing technique method thereof ", this patent application is for the warp-wise seam extensively adopting in prior art, change seam direction has been proposed, the scheme that seam is improved to broadwise (being the axial of rubber dam bag), this case has proposed following problem to the present situation of warp-wise seam in prior art:

L, rubber dam bag overlapping the slot are many, manufacturing process more complicated:

2, repeatedly block cloth width, more radially whip stitch increases waste of material and cost;

3,, in the anchor line of rubber dam bag, the rubber dam bag uneven thickness because of the anchor line position that radially whip stitch causes, easily causes anchor line place to occur seepage;

4, the rubber dam bag surface irregularity of producing.

But there are following three subject matters in this kind of dam bag, the one: whip stitch, perpendicular to water (flow) direction, in the situation that bearing bag internal pressure, also will bear the impact force of current; Even if overlapping the slot self possesses such supporting capacity, but the bag of overlapping the slot both sides is also difficult to bear the force environment of complexity like this.The 2nd: in the situation that river width is wider, discharge water, during overflow, current can form vibration to dam bag, and the linearity of latitudinal lap-seam has resonance frequency, once both frequencies are consistent or approaching, can cause rubber dam bag integral body " resonance effects ", make the shortening in application life of dam bag.The 3rd: dam bag globality is bad, affects overall appearance.

Summary of the invention

The present invention is directed to above problem, provide a kind of structural strength high, overall leveling, be convenient to anchoring, and in avoiding using, occur " resonance effects " without seam rubber dam bag production technology.

Technical scheme of the present invention is: adopt the long width blank that comprises outer layer glue, middle level glue, hose lining and casing play, according to the following steps processing:

1), joint processed; When long width blank moulding, in long width blank Liang Chang limit edge, process respectively the banjo fixing butt jointing of shape complementarity;

2), once sulfuration; Processing is vulcanized at middle part to long width blank width direction, and both sides reserve raw limit;

3), cutting; By the girth requirement of rubber dam bag, along the length direction cutting one by one of described long width blank, obtain some short width blanks, described short width blank has a pair of relative raw limit, and two raw limits have respectively the banjo fixing butt jointing of shape complementarity;

4), overlap joint; The short width blank that front step is made utilizes the banjo fixing butt jointing of described shape complementarity to overlap each other, make overlapping the slot smooth, do not stay gap;

5), post-cure; Aforementioned overlapping the slot is carried out to post-cure, adjacent short width blank is fixedly connected as a single entity by overlap joint, sulfuration; Then, according to the requirement of rubber dam bag axial length, overlap one by one, post-cure step is until meet the requirement of aforementioned rubber dam bag axial length; Make.

The banjo fixing butt jointing of described shape complementarity be stepped.

The present invention adopts twice sulfuration, first the middle part of long width blank is vulcanized, and both sides reserve raw limit; Then carry out cutting, after cutting, obtain short width blank; The dual-side of the short width blank limit of making a living, and have the joint of shape complementarity, by the joint docking of two blocks of short width blanks, carry out post-cure, by the adjacent raw limit sulfuration of adjacent two blocks of short width blanks, be " ripe limit ", the material after once vulcanizing with middle part is consistent; Finally make seam for (consistent with river course direction) seam radially, and smooth, surperficial jointless rubber dam bag bag.The present invention adopts twice sulfuration, and while vulcanizing for the second time, it is an integral body that the raw limit of banjo fixing butt jointing connection of two blocks of adjacent short width blanks is vulcanized simultaneously, makes the bonding strength of bag high; There is not axially (broadwise, perpendicular to river course direction) seam (bright, housed joint seam), can effectively avoid " resonance effects "; Overall leveling, makes the long limit of bag (axially) consistency of thickness, guarantees anchoring effect.Its overlapping the slot of the rubber dam bag that the present invention makes is inner at dam bag, and dam bag surfaces externally and internally is smooth, without seam; Bag is inner, because framing repeatedly vulcanizes, makes product compactness high.Adopt the rubber dam bag of this explained hereafter to be combined with seam and without the advantage of seam rubber dam, product is good and without the jointless advantage in seam rubber dam surface with the density of seam rubber dam.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention,

Fig. 2 is the top view of Fig. 1,

Fig. 3 is the schematic diagram of a vulcanisation step of the present invention,

Fig. 4 is the schematic diagram of cutting step of the present invention,

Fig. 5 is the schematic diagram that cutting step of the present invention makes short width blank,

Fig. 6 is the schematic diagram of overlap joint of the present invention, post-cure step,

Fig. 7 be in Fig. 6 A to view,

Fig. 8 be in Fig. 6 A to view,

Fig. 9 is the schematic diagram of the bag that makes after post-cure of the present invention,

Figure 10 be in Fig. 9 B to view,

Figure 11 be in Fig. 9 B to view,

Figure 12 is that the present invention overlaps one by one, the schematic diagram of post-cure step,

Figure 13 is the left view of Figure 12,

Figure 14 is the use state reference map that the present invention makes bag,

Figure 15 is the right view of Figure 14;

In figure, 1 is long width blank, the 10th, and short width blank, the 20th, bag after overlap joint, 201 outermost terminations, the 30th, rubber dam bag bag, the 11st, lap joint one, 12nd, lap joint two, 13rd, cutting wires, the 100th, grog district, middle part, the 101st, raw limit one, 102nd, raw limit two, 2nd, vulcanizing mold; The 40th, outer glue-line, the 50th, mesoglea, the 60th, casing play, the 70th, inner glue layer.

The specific embodiment

The present invention, as shown in Fig. 1-15, adopts the long width blank 1 that comprises outer layer glue 40, middle level glue 50, hose lining 70 and casing play 60, according to the following steps processing:

1), joint processed; When 1 moulding of long width blank, in long width blank 1 Liang Chang limit edge, process respectively the banjo fixing butt jointing of shape complementarity; As lap joint in Fig. 11, lap joint 2 12, mutual shape complementarity; This complementary shape can adopt stepped, and stepped have both forms, and the one, as the right angle stepped-style in Fig. 7,10, the 2nd, as the stepped-style with arc transition in Fig. 8,11; Benefit is the contact area that increases by two side connectors, improves bonding strength;

2), once sulfuration; Processing is vulcanized at middle part to long width blank 1 width, makes the middle part between dotted line as shown in Figure 2,3, 4 all become grog district 100, middle part; In long width blank 1 both sides, reserve raw limit; This life limit is material uncured, the raw limit of both sides make a living respectively limit 1, raw limit 2 102, the width on raw limit 1, raw limit 2 102 generally will be considered the width of vulcanizing mold 2, the width sum on raw limit 1, raw limit 2 102 is less than or equal to the width of vulcanizing mold 2, the raw border area after can full cure two docking when guaranteeing post-cure; At this, it should be noted that, during post-cure, the mould of employing can be different from the once vulcanizing mold 2 of sulfuration;

3), cutting; By the girth requirement of rubber dam bag, along the length direction cutting one by one of described long width blank 1, as shown in Figure 4, along cutting wires 13 cuttings; Obtain some short width blanks 10, as shown in Figure 5; Described short width blank 10 has a pair of relative raw limit, and two raw limits have respectively the banjo fixing butt jointing of shape complementarity; Be that aforementioned long width blank 1 both sides reserve raw limit;

4), overlap joint; As shown in Fig. 6,7,8, the short width blank 10 that front step is made utilizes the banjo fixing butt jointing of described shape complementarity to overlap each other, make overlapping the slot smooth, do not stay gap;

5), post-cure; Aforementioned overlapping the slot is carried out to post-cure, adjacent short width blank is fixedly connected as a single entity by overlap joint, sulfuration; Must overlap rear bag 20, as shown in Fig. 9,10,11; Then, according to the requirement of rubber dam bag axial length, overlap one by one, post-cure step (as shown in Figure 12,13) is until meet the requirement of aforementioned rubber dam bag axial length; Make.When this it is emphasized that due to post-cure the condition of material from once vulcanize differently, should select different parameter (once vulcanize without faying surface, post-cure has faying surface).

As required, continuing to meeting after the requirement of aforementioned rubber dam bag axial length, also can repair head, repair head and can take the means that the outermost termination 201 of first and last short width blank 10 is cropped; Also can be that this outermost termination 201 is vulcanized.

Bag after making, as shown in the direction of arrow in Figure 13, carries out bending, forms the rubber dam bag bag 30 as shown in Figure 14,15.

The present invention inherits has seam rubber dam to produce for many years mature experience, without adopting the expensive disposable vulcanizing equipment of large format overlength, utilizes common vulcanizing equipment can complete processing.First dam bag adhesive plaster framing is vulcanized, but only vulcanize cloth width zone line, within the scope of overlapping edges, do not vulcanize; Then after dam cloth being overlapped, on special equipment, vulcanize.This explained hereafter rubber dam bag, its overlapping the slot is inner at dam bag, dam bag surfacing, without seam.Adopt the rubber dam bag of this explained hereafter to be combined with seam and without the advantage of seam rubber dam, product is good (due to framing sulfuration with the density of seam rubber dam, while making to vulcanize, pressure is enough large at every turn, has avoided material internal to have the problem of pore, air gap) and without the jointless advantage in seam rubber dam surface.

Claims (2)

1. without a seam rubber dam bag production technology, adopt the long width blank that comprises outer layer glue, middle level glue, hose lining and casing play, it is characterized in that, according to the following steps processing:

1), joint processed; When long width blank moulding, in long width blank Liang Chang limit edge, process respectively the banjo fixing butt jointing of shape complementarity;

2), once sulfuration; Processing is vulcanized at middle part to long width blank width direction, and both sides reserve raw limit;

3), cutting; By the girth requirement of rubber dam bag, along the length direction cutting one by one of described long width blank, obtain some short width blanks, described short width blank has a pair of relative raw limit, and two raw limits have respectively the banjo fixing butt jointing of shape complementarity;

4), overlap joint; The short width blank that front step is made utilizes the banjo fixing butt jointing of described shape complementarity to overlap each other, make overlapping the slot smooth, do not stay gap;

5), post-cure; Aforementioned overlapping the slot is carried out to post-cure, adjacent short width blank is fixedly connected as a single entity by overlap joint, sulfuration; Then, according to the requirement of rubber dam bag axial length, overlap one by one, post-cure step is until meet the requirement of aforementioned rubber dam bag axial length; Make.

2. according to claim 1 a kind ofly it is characterized in that without seam rubber dam bag production technology, the banjo fixing butt jointing of described shape complementarity be stepped.

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