CN1348857A

CN1348857A - Forming method of PU foam pattern basin body

Info

Publication number: CN1348857A
Application number: CN 00130752
Authority: CN
Inventors: 谢孟峰; 谢孟达
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-18
Filing date: 2000-10-18
Publication date: 2002-05-15

Abstract

The invention discloses a method for forming a PU foaming type patterned basin body, which is to form patterns and the basin body in respective moulds in a PU foaming mode, and then bond the patterns on the basin body after forming. Wherein the patterns are formed in a flexible shape or in a shape that the inner side corresponds to the outer side of the pot body. The parting line of the pot body is positioned at the maximum diameter position outside the pot body and is in a ring shape. The method effectively massively produces the hollow PU foaming basin body with the patterns on the outer surface, avoids the defects that the burrs and the patterns are not easy to repair, the basin body is easy to damage and the like when the patterns and the basin body are formed, improves the quality of finished products, and reduces the cost of the finished products.

Description

The forming method of PU foaming type decorative pattern basin body

The present invention relates to a kind of forming method of PU foaming type decorative pattern basin body.

Hollow type PU foam articles, general common as big decoration flowerpot, its outside is covered with rough decoration usually, therefore all turn over and make hollow type PU foam articles traditionally with the external mold of the silica gel system internal mold of arranging in pairs or groups, system is earlier with silica gel mould and its internal mold matched moulds during production, and perfusion PU, after treating its foaming moulding in tens of minutes, with the manual silica gel mould that slowly peels, take out the PU foam articles again, often demould time will expend 5～10 minutes, and because in a single day the agent of PU material stirs extrusion foaming as early as possible, otherwise promptly can lose efficacy, so, repair burr and surface treatment at last using a large amount of manpowers (wanting usually more than 10 people) in the operation of die sinking pickup, throughput rate is very slow, and since the silica gel mould can heavily to cover access times few, damage in advance sometimes causes the defective products of PU foaming finished product to increase and production cost increases, and, because of silica gel mould quality differs, the work that finished surface need be handled also increases, and these all cause PU foaming finished product throughput rate low, the high disappearance of poor quality and cost.

Therefore; someone will commonly use the production of PU foam articles and change punching block production into, yet, if with existing punching block production method; then the external mold of mould must solve the die sinking problem with the number slide block; not only the Mold Making time long, and cost is high, what is worse; because the characteristic of PU foaming; in the spue line or the land area corresponding position of mould, the PU foam articles can produce burr, and these spue lines or land area often cooperate decorative pattern to form irregular in order to the demoulding for asking; more therefore, burr are often just at the pattern edge of finished product; repair when removing and rely on artificial handled fully, job scheduling is very slow, also will mend soil just in case repaiied bad; pretty troublesome; in addition, owing to there is this decorative pattern exquisite, also regular meeting is destroyed when the demoulding; this also needs to repair; not only time-consuming but also take a lot of work, the PU foaming cycle is wanted tens of minutes simultaneously, therefore; as desire volume production and certainly will will prepare many group moulds; before one under the topic, directly make the mould of high price at this, will make the unit price of finished product high to commonly use the punching block production method.

Because above-mentioned disappearance, the inventor sets about improvement, and generation of the present invention is arranged eventually.

The object of the present invention is to provide a kind of forming method of PU foaming type decorative pattern basin body, purport has appearance the effective mass production of hollow type PU foaming basin body of decorative pattern, be difficult for repairing when avoiding decorative pattern and basin body moulding except that shortcomings such as burr and decorative pattern, destructibles, improve the quality of finished product, reduce the cost of finished product.

Solution of the present invention is: decorative pattern and basin body are foamed mode in die for molding separately with PU respectively, after the moulding, decorative pattern is bonding on the basin body again.

Wherein, decorative pattern is shaped to the flexible kenel, or is shaped to its inboard and corresponding form of basin body lateral surface.

And the die parting line of basin body is positioned at the maximum diameter place in the basin body outside, is a ring-type.The maximum diameter place in the basin body outside is the outside of basin mouth.

Like this, the present invention system is with decorative pattern and basin body moulding respectively earlier, again decorative pattern is bonding on basin body, in order to basin body die sinking, excision basin body burr and the variation of product decorative pattern, and guarantee to be bonding on the integrality of the decorative pattern of basin body, thus, avoided decorative pattern and basin body directly one-body molded and be difficult for repairing shortcoming, saved time, improve production capacity, improve quality, be easy to die sinking and be beneficial to the enhancement effect of product decorative pattern variation thereby reach to cause except that burr and decorative pattern destructible.

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is a process block diagram of the present invention;

Fig. 2 is a schematic flow sheet one among Fig. 1;

Fig. 3 is a schematic flow sheet two among Fig. 1;

Fig. 4 is a schematic flow sheet three among Fig. 1;

Fig. 5 is a schematic flow sheet four among Fig. 1;

Fig. 6 is a schematic flow sheet five among Fig. 1.

Extremely shown in Figure 6 as Fig. 1, the present invention is a kind of forming method of PU foaming type decorative pattern basin body, decorative pattern 22 and basin body 2 are formed separately, again decorative pattern 22 is bonding on basin body 2, wherein the die parting line 21 of basin body 2 (being the spue line 11 of its mould 1) is that the maximum diameter place that is positioned at basin body 2 outsides is a ring-type, and be convenient to excise burr in rotation basin body 2 modes, its flow process is as follows:

Flow process F1, as shown in Figure 2: basin body 2 is with the matched moulds foaming of mould 1, wherein the die parting line 21 of basin body 2 (being the spue line 11 of its mould 1) is that the maximum diameter place that is positioned at basin body 2 outsides is a ring-type, and basin body 2 surfaces are level and smooth kenel again, in order to the follow-up demoulding and bonding operation;

Flow process F2, as shown in Figure 3: take out behind basin body 2 foamings, its burr come across spue line 11 places of its mould 1, that is its die parting line 21 places, can be convenient to excise burr in rotation basin body 2 modes, obtain basin body 2 as shown in Figure 4, operate simple and easy and quick;

Flow process F3, as shown in Figure 5: with PU foaming mode other shaping pattern 22 in mould, the binding face of decorative pattern 22 is level and smooth kenel;

Flow process F4, as shown in Figure 6: decorative pattern after the moulding 22 is bonding on basin body 2; Because of both binding faces are all level and smooth kenel, can guarantee to be bonding on the integrality and the fastness of the decorative pattern 22 of basin body 2.

The application category of this case is a PU foaming hollow type basin body, and wherein, the decorative pattern 22 of this case is because of being the PU foaming, and the thickness of decorative pattern 22 is little, so tool splendid pliability, the characteristic of flexible whereby, any type of decorative pattern 22 all can be complied with basin body 2 cambered surfaces and the bending of taking advantage of a situation, complete is closely connected in the basin body surface, so, decorative pattern 22 not only can firmly be fitted, and the finished product after the moulding, the applying vestige at decorative pattern 22 places also is difficult for being discovered, and product can be had more texture; In addition, decorative pattern 22 also can be shaped to its inboard form the form of corresponding basin body lateral surface, more can firmly fit.

In addition, this case basin body 2 adopts the mode of production of moulding respectively with decorative pattern 22, makes the basin body 2 of same size, can optionally paste the decorative pattern 22 of different patterns on producing, and product possesses diversified ability, more can accord with the demands of the market.Especially, the diversified ability of this case is to utilize single basin body 2 moulds 1 to cooperate decorative pattern 22 moulds 1 of many groups to reach, and on cost, because of decorative pattern 22 moulds 1 volume is little, becomes body, has economic benefit so obtain diversified ability by this.

Comprehensively above-mentioned, with decorative pattern 22 and basin body 2 moulding respectively, and basin body 2 die parting lines are located at maximum diameter place, basin body 2 outside, especially basin mouth maximum diameter place (even the top of maximum part), what for be easy to repair burr, and reduce during the fabricator, more smooth after the finishing, and decorative pattern 22 other moulding are not influenced by basin body 2 demouldings, cause whole finished product fraction defective also to decline to a great extent certainly, and quality of finished also improve, thereby also save surface-treated man-hour, significantly reduce cost, simultaneously can only can produce the finished product of multiple different decorative patterns, and can reach product diversification easily and have the value of industry with a tool basin body mould.

Claims

1. A method for forming a PU foam pattern pot body, which is characterized in that: the pattern and the pot body are formed in separate molds by PU foaming, and after forming, the pattern is bonded to the pot body.

2. The molding method of the PU foam pattern pot body according to claim 1, characterized in that: the patterns are formed in a flexible form.

3. The molding method of the PU foam pattern pot body as claimed in claim 1, characterized in that: the pattern is formed so that the inner side corresponds to the outer side of the pot.

4. The molding method of the PU foam pattern basin body according to claims 1 to 3, characterized in that: the parting line of the basin body is located at the largest diameter outside the basin body, which is in a ring shape.

5. The molding method of the PU foam pattern basin body as claimed in claim 4, characterized in that: the largest diameter outside the basin body is outside the mouth of the basin.