CN116619512A - Multi-modeling melamine facing edge folding line production process - Google Patents

Abstract

The invention is suitable for the technical field of woodwork processing, and provides a multi-molding melamine-facing edge folding line production process, which comprises the following steps of S1 triamine plate cutting, S2 edge folding forming, wherein the S2 edge folding forming is completed by an edge folding forming automatic production line, the steps comprise tape pasting, groove milling, sizing and edge folding functions, S3 health preserving, the S3 health preserving is placed at 10-25 ℃ for 6-8 hours to ensure that the PVAc white emulsion of a semi-finished product line is completely solidified, S4 tape removing and S5 molding processing, and the S5 molding processing is completed by a molding processing automatic production line, and the functions comprise chamfering milling, heat transfer and UV covering are realized, so that multi-molding production is realized. The multi-modeling melamine-facing edge-folding line production process provided by the invention has the advantages that the production efficiency is improved, the cost is reduced, various chamfering models are realized, the product diversity requirements of the market are met, and the core competitiveness of the product is improved.

Description

Multi-modeling melamine facing edge folding line production process

Technical Field

The invention is suitable for the technical field of woodwork processing, and particularly relates to a multi-modeling melamine facing edge folding line production process.

Background

At present, the interior decoration has higher and higher requirements on the integrality of cabinets, wooden doors and furniture, and the three are required to be same in grain and color. The cabinet facing is mainly melamine facing, and has excellent wear resistance, scratch resistance and certain fireproof performance. The market demand for melamine faced wooden doors has grown.

The melamine veneer itself is brittle and hard in material characteristics, and the traditional PVC wood door production process is not suitable for the production of melamine veneer wood doors. In particular to lines in wooden door parts, which are provided with a molding surface and a turning surface, the melamine-faced lines can be produced only by a process of softening and then coating melamine-faced paper. The process has high manufacturing cost and single shape, and the softening film of the process is influenced by the temperature change of the heating air in the north, so that the situation of facing cracks is easy to occur.

Therefore, the technical personnel in the art combine the existing PVC flanging line process with the melamine facing material characteristics to provide a multi-modeling melamine facing flanging line production process.

Disclosure of Invention

The invention provides a production process of multi-modeling melamine-faced edge folding lines, and aims to solve the problems of high production cost, low efficiency and single modeling of the existing melamine-faced edge folding lines.

The invention is realized in such a way that the production process of the multi-modeling melamine veneer flanging line comprises the following steps:

s1, cutting a triamine plate: the melamine veneer is split into narrow strips for lines;

s2, flanging and forming: the narrow strip which is opened in the previous step is glued, grooved, glued and folded to form a semi-finished product line;

s3, health preserving: placing the semi-finished product line at the environmental temperature of 10-25 ℃ for 6-8 hours to ensure that the PVAc white emulsion is completely cured;

s4, removing adhesive tape: removing the adhesive tape on the surface of the semi-finished product line so as to facilitate subsequent processing;

s5, modeling and processing: milling chamfering and heat transfer printing are carried out on right angle turning parts on two sides of the semi-finished product line, and the line processing is completed through UV coverage.

Preferably, in the step of cutting the S1 triamine plate, the door leaf door skin material can be selected to leave triamine veneer residual materials, so that the material utilization rate is improved, and the cost is saved;

preferably, in the S2 hemming forming, the taping is divided into a left side and a right side of the narrow tape, so that the cost is saved;

preferably, in the S2 hemming forming, the V angle of the V-shaped groove is 90 °, the glue surface of the PVAc white latex is ensured to be in a micro-gap state after the subsequent hemming, the glue strength is ensured by a certain pressure to the PVAc white latex, and the gap on the mould surface after the subsequent mould processing and chamfering is avoided;

preferably, in the S2 hemming molding, shi Jiaofen is EVA hot melt adhesive and PVAc white latex, the EVA hot melt adhesive has short opening time and can be rapidly cured to mold the lines, the PVAc white latex is cured to further improve the bonding strength of the lines, and the white latex has the characteristic of being irreversible by heat after being cured to ensure that the subsequent thermal transfer printing and UV coverage cannot be cracked due to high temperature;

preferably, in the process of taping, milling groove, sizing and edge folding in the S2 edge folding forming process, the workpiece advancing mode is the same, the linear speed is matched with the automatic production line of the PVC edge folding line edge folding forming, the collinear production can be realized, and the efficiency and the cost are reduced while the productivity of equipment is fully utilized.

Preferably, the S3 is cured, and is placed for 6-8 hours at the environmental temperature of 10-25 ℃ to ensure that the PVAc white latex is completely cured;

preferably, in the step S5 of modeling, the chamfer is milled, and multiple models of the bullnose, the fillet and the flat angle can be realized by replacing a cutter, so that the size can be adjusted;

preferably, in the step S5 of molding, the thermal transfer printing is performed, after chamfering, using a thermal transfer printing film with the same color and the same line to cover the milled surface, and the color line of the thermal transfer printing film is unified with that of the triamine facing;

preferably, in the step S5 of molding, the UV coating is performed by coating a transparent UV primer on the thermal transfer surface, so that the thermal transfer surface is sealed to prevent expansion cracking and mildew caused by moisture while ensuring that the color lines are unchanged, and the surface hardness is improved to increase scratch resistance;

preferably, the processing linear speeds of the functional units in the S5 modeling processing are matched, the advancing modes are the same, and the functional units can be processed by a modeling processing automatic production line, so that the efficiency is further improved, and the cost is saved.

Compared with the prior art, the invention has the beneficial effects that:

1. the melamine decorative line is produced in a folding manner in a collinear manner with the PVC folding line, so that the production efficiency is improved, and the manufacturing cost is reduced;

2. the materials are fully utilized, the material utilization rate is improved, and the material cost is saved;

3. the multi-model switchable production is realized, and more choices are given to customers.

Drawings

FIG. 1 is a flow chart of the overall process of the present invention;

FIG. 2 is a schematic diagram of the hemming forming process of the present invention;

FIG. 3 is a schematic drawing of the molding process of the present invention;

in the figure:

s1, cutting triamine plate

S2, flanging and forming; 201 taping; 202. milling grooves; 203. sizing; 204. folding edges; 205. melamine veneer strips; 206. melamine veneer; 207. an adhesive tape; 208. rectangular grooves; 209. a V-shaped groove; 210. a flanging groove; 211. v angle; 212. a short side plate; 213. a main board; 214. a long side plate; 215. PVAc white latex; 216. EVA hot melt adhesive; 217. a corner enlarged view; 218. a hot melt adhesive bonding surface; 219. a white latex bonding surface; 220. a semifinished line; 221. a breaking line;

s3, preserving health;

s4, removing the adhesive tape;

s5, modeling processing; 501. milling and chamfering; 502. thermal transfer printing; 503. UV coverage; 504. a fillet; 505. a bullnose; 506. flattening the angle; 507. a fillet transfer layer; 508. an outer circle transfer layer; 509. a flat angle transfer layer; 510. enlarged view of the fillet; 511. a bullnose enlarged view; 512. a flat angle enlarged view; 513. an inner circular UV layer; 514. an outer circular UV layer; 515. flat angle UV layer.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

A multi-modeling melamine facing edge folding line production process comprises the following steps:

triamine plate cutting S1: cutting the melamine veneer along the length direction to obtain melamine veneer strips 205;

and (2) edge folding and forming: the melamine veneer lath 205 is processed by the tape 201, the milling groove 202, the sizing 203 and the flanging 204 to obtain a semi-finished product line 220;

health preserving S3: placing the semi-finished product line 220 at the environment temperature of 10-25 ℃ for curing for 6-8 hours to ensure that the PVAc white latex 215 is completely cured;

and (4) removing the adhesive tape S4: removing adhesive tapes 207 on the corners of the two sides of the semi-finished product line 220;

modeling processing S5: milling chamfer 501, thermal transfer 502 and UV covering 503 are processed at the breaking lines 221 on two sides of the semi-finished product line 220, and line production is completed.

Furthermore, in the S1 triamine plate material opening process, the melamine veneer can be made of a door leaf door skin veneer material, and then the residual material is left, so that the material utilization rate is improved, the material cost is saved, and meanwhile, the homologous material can ensure that the door leaf and the line melamine veneer have no chromatic aberration.

Furthermore, in S2 edge folding forming, the feeding modes are the same when the adhesive tape 201, the milling groove 202, the sizing 203 and the edge folding 204 are processed, and the linear speed is matched with that of the PVC edge folding line edge folding forming automatic production line, so that collinear production is realized, and the efficiency and the cost are reduced;

preferably, the tape 201 is divided into two tapes 207 on the left and right sides of the melamine veneer 206 of the melamine veneer lath 205, so that the material cost can be saved;

furthermore, the adhesive tape 207 can ensure that the main board 213, the short side board 212 and the long side board 214 of the subsequent folded edge 204 cannot be cracked and separated, and the PVAc white latex 215 cannot pollute the facing due to extrusion overflow;

preferably, the milling groove 202 is divided into a rectangular groove 208 and a V-shaped groove 209, and the front and back milling is sequentially carried out to allocate resistance, so that high-speed milling of 35-40m/min is realized;

further, the V angle 211 of the V-shaped groove 209 is 90 °, the position of the adhesive surface 219 of the white latex is guaranteed to be in a micro-gap state after the edge folding 204, a certain pressure is given to the subsequent PVAc white latex 215, and a gap is prevented from occurring on the modeling surface after the chamfering 501 is milled;

preferably, the glue 203 is made of EVA hot melt adhesive 216 with short open time, and is glued by quick curing;

further, the glue 203 is applied with PVAc white latex 215 at the bottom of the V-shaped groove 209, and is heated irreversibly after being cured, so that the lines are prevented from cracking due to heating during the subsequent thermal transfer 502 and UV coverage 503;

preferably, in S3 curing, the semi-finished product line 220 is placed at the ambient temperature of 10-25 ℃ for curing for 6-8 hours, so that the white latex is completely cured.

Preferably, milling chamfer 501 allows for milling fillet 504, bullnose 505, and flat 506 by changing the tool, and the size can be adjusted;

preferably, the thermal transfer 502 can be transferred by replacing the transfer wheel set fillet 504, bullnose 505, and flat corner 506 milling molding surfaces to form an inner circle transfer layer 507, an outer circle transfer layer 508, and a flat corner transfer layer 509;

further, the thermal transfer 502 adopts a transfer film with the same color and the same texture as the melamine veneer, and the integrity of the line veneer after transfer is good;

preferably, the UV cover 503 covers the inner circular UV layer 513, the outer circular UV layer 514, and the flat angle UV layer 515 by changing the mold, respectively, the inner circular transfer layer 507, the outer circular transfer layer 508, and the flat angle transfer layer 509;

further, the transparent UV paint is adopted for the UV coverage 503, so that the overall color lines of the lines are not affected;

furthermore, the UV paint adopts yellowing-resistant UV to prevent subsequent UV surface yellowing from causing chromatic aberration;

further, the hardness of the chamfer surface after the UV cover 503 is increased to the same level as that of the melamine surface to avoid scratch;

further, the transfer surface is completely covered and sealed after the UV cover 503, so that the moisture, swelling and cracking and mildew are avoided;

the foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (14)

1. A multi-modeling melamine facing edge folding line production process is characterized in that: the method comprises the following steps:

triamine plate blanking (S1): cutting along the length direction of the melamine veneer to obtain melamine veneer strips (205);

hemming forming (S2): the melamine veneer strips (205) are subjected to tape pasting (201), groove milling (202), glue applying (203) and edge folding (204) to obtain semi-finished product lines (220);

health preserving (S3): the semi-finished product line (220) is taken off line and is preserved for 6 to 8 hours at the temperature of between 10 and 25 ℃;

adhesive tape (S4): tearing off the surface adhesive tape (207) of the semi-finished product line (220);

modeling (S5): milling and chamfering (501), thermal transfer printing (502) and UV covering (503) are carried out on right-angle turning parts on two sides of the semi-finished product line (220) to finish melamine-facing edge folding line production.

2. The triamine plate cut (S1) according to claim 1, characterized in that: the melamine veneer can be cut by using the residual material plate left by the door leaf door skin material preparation, so that the material is fully utilized, and the cost is saved.

3. Tape (201) for hemming forming (S2) according to claim 1, characterized in that: the left and right adhesive tapes (207) are separated, so that the material cost is saved.

4. The hemming formed (S2) milling flutes (202) of claim 1 wherein: firstly, rectangular grooves (208) are formed, then V-shaped grooves (209) are formed, folding grooves (210) are formed through combination, V angles (211) of the V-shaped grooves (209) are 90 degrees, and melamine veneer battens (205) are divided into short side plates (212), main plates (213) and long side plates (214) through the folding grooves (210).

5. Sizing (203) for hemming forming (S2) according to claim 1, characterised in that: and (2) applying EVA hot melt adhesive (216) to the edge of the edge folding groove (210), wherein the EVA hot melt adhesive (216) has short opening time and can be glued quickly, PVAc white latex (215) is applied to the bottom of the V-shaped groove (209), and the PVAc white latex (215) cannot influence the gluing performance due to heat after being solidified.

6. The hem (204) of the hemming forming (S2) of claim 1 wherein: the short side plate (212) and the long side plate (214) rotate 90 degrees at the tips of the V-shaped grooves (209) to form U-shaped semi-finished product lines (220), at the moment, a hot melt adhesive bonding surface (218) and a white latex bonding surface (219) are formed, and the melamine facing (206) is broken at the edge folding position to form breaking lines (221).

7. The hemming forming (S2) process according to claims 3 to 6, wherein the adhesive tape (207) connects the short side plate (212), the main plate (213), and the long side plate (214) to prevent the melamine veneer (205) from separating, and the adhesive tape (207) can prevent the PVAc white latex (215) from overflowing to affect the bonding strength and pollute the surface of the product.

8. The hemming forming (S2) process according to claims 3 to 6, wherein the EVA hot melt adhesive (216) has a hot melt adhesive bonding surface (218) formed after the hemming (204) to provide an initial bonding strength, so that the semi-finished line (220) is initially formed, and the V-shaped groove (209) is folded at a V angle (211) of 90 ° to form a white latex bonding surface (219), which is in a micro-gap state, so that the bonding strength is ensured.

9. The hemming forming (S2) process according to claims 3 to 8, wherein when the melamine veneer strip (205) is sequentially processed by taping (201), milling groove (202), sizing (203) and hemming (204), the travelling directions of the workpieces are the same, the linear speeds are matched, and the workpieces can be processed by a PVC hemming forming automatic production line, thereby fully utilizing the productivity of equipment, improving the production efficiency and reducing the labor cost.

10. The curing (S3) process according to claim 1, wherein the PVAc white latex (215) is fully cured by providing a 6-8 hour holding time and a 10-25 ℃ temperature environment, and is irreversible by heat after curing, and the bonding strength is not affected by the high temperature generated by the thermal transfer printing (502) and the UV coating (503) during subsequent processing.

11. The taping (S4) procedure according to claim 1, wherein the tape (207) is removed from affecting the subsequent shaping (S5) procedure.

12. The milling chamfer (501) of the molding process (S5) according to claim 1, characterized in that: by milling the fracture line (221) on the semi-finished product line (220) through a milling cutter, a fillet (504) can be formed, and the external fillet (505) and the flat corner (506) can be formed by replacing the cutter.

13. The thermal transfer printing (502) of the modeling (S5) process according to claim 1, wherein the fillet (504) is covered by a thermal transfer printing film with the same color and the same texture, so as to form an inner fillet transfer printing layer (507) covering the substrate surface of the fillet (504), and the outer fillet transfer printing layer (508) and the flat fillet transfer printing layer (509) are realized by changing different modeling transfer printing press wheels in the same way.

14. UV coating (503) for a molding process (S5) according to claim 1, wherein the inner UV layer (513) is formed by coating the inner transfer layer (507) with a transparent UV paint, and wherein the outer UV layer (514) and the flat angle UV layer (515) are realized by changing the mold. The UV surface hardness after the UV is covered (503) can be compared with that of melamine veneer, the scratch resistance is excellent, and meanwhile, the inner circle transfer printing layer (507), the outer circle transfer printing layer (508) and the flat angle transfer printing layer (509) are sealed, so that expansion cracking and mildew caused by moisture of internal base materials can be avoided.