CN111113918A

CN111113918A - Back plate skin composite die and composite method thereof

Info

Publication number: CN111113918A
Application number: CN202010063132.4A
Authority: CN
Inventors: 沈方磊; 汪经朝
Original assignee: Ningbo Bogus Top Auto Parts Co Ltd
Current assignee: Ningbo Bogus Top Auto Parts Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-05-08

Abstract

The invention discloses a backboard and skin composite die, which comprises an upper die plate and a lower die plate, wherein the upper die plate is provided with an upper die, and the lower end of the upper die plate is provided with a limiting mechanism for positioning a workpiece; the lower die plate is provided with a lower die, the upper end surface of the lower die is concave to form a lower die cavity matched with the upper die, the lower die cavity is communicated with an external air blowing device, the upper end surface of the lower die is hermetically provided with a silica gel plate used for placing a surface fabric to be compounded, so that the lower die cavity forms a sealed space, the upper die drives a workpiece at the lower end of the upper die to downwards match in the lower die cavity when die assembly is carried out, the air blowing device blows air into the lower die cavity to enable the silica gel plate to deform, and the surface fabric flatly placed on the silica gel plate is tightly compounded and adhered to the lower end surface of. The invention also discloses a compounding method of the backboard skin. The back plate and skin composite die and the back plate and skin composite method thereof disclosed by the invention have the advantages of simple structure and convenience in operation, and can ensure that the back plate and the skin are tightly attached.

Description

Back plate skin composite die and composite method thereof

Technical Field

The invention relates to the technical field of pressing dies, in particular to a back plate skin composite die and a composite method thereof.

Background

The automobile seat back board belongs to a deformed part, the processed part of the automobile seat back board is mostly a curved surface formed by curve and arc displacement, at present, the traditional processing method is to spray glue on the surface and the framework through manpower, then heat the surface in a drying oven, and then press and shape the surface and the seat back board through manual fitting. The manual operation has the advantages of high labor intensity, poor labor environment, low production efficiency, poor consistency of the back plate, difficulty in ensuring the quality of finished products, high defective products and rejection rate, increase of the production cost of enterprises, influence on the economic benefit of the enterprises, and incapability of meeting the requirement of mass production of modern automobile industries and manufacturers.

Certainly, some similar automatic pressing molds are also provided along with technical innovation, generally, a skin is placed on a lower mold, a substrate is positioned on an upper mold, a corresponding heating system is arranged in the mold, the skin coated with glue on the surface and the composite substrate are heated simultaneously, and after heating is completed, the skin and the substrate are attached through closing the upper mold and the lower mold. Although the existing pressing die replaces the manual pressing process, the following defects still exist: the product positioning mechanism is complex and high in cost; when the back plate has a negative angle, the back plate is not flat in fit with the surface, and complete fit cannot be guaranteed; if the fitting integrity of the back plate and the surface skin is realized by improving the precision of the mould, the production cost of the mould is increased.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defect of the prior art is overcome, and the backboard and skin composite die which is simple in structure, convenient to operate and capable of ensuring the precise fitting of the backboard and the skin is provided.

The invention aims to solve another technical problem that: the method for compounding the back plate skin is provided, and the problem that the negative angle position in the back plate structure is not bonded in place is solved.

The technical scheme adopted by the invention is as follows: the composite mould for the skin of the backboard comprises an upper template and a lower template, wherein the upper template is provided with an upper mould, and the lower end of the upper mould is provided with a limiting mechanism for positioning the backboard; the lower die plate is provided with a lower die, the upper end face of the lower die is concave to form a lower die cavity matched with the upper die, the lower die cavity is communicated with a blowing device of the peripheral equipment, the upper end face of the lower die is provided with a silica gel plate used for placing a skin to be compounded, so that the lower die cavity forms a sealing space, during die assembly, the upper die drives a back plate at the lower end of the upper die to be matched in the lower die cavity, and the blowing device blows air into the lower die cavity to enable the silica gel plate to deform, so that the skin flatly placed on the silica gel plate is tightly compounded and adhered to the lower end face of the back plate.

Compared with the prior art, the invention has the following advantages:

in the composite die structure, the back plate is positioned by adopting a negative pressure adsorption structure, the combination is simple, and the damage to the outer surface of the back plate can be avoided; in addition, an easily-deformable silica gel plate is arranged on the lower die, the surface skin is placed on the silica gel plate, and when the die is closed, the back plate on the upper die is directly pressed on the upper end surface of the surface skin and moves downwards to be matched in the lower die cavity, so that the back plate and the surface skin are pressed tightly; in addition, the silica gel plate is inflated in the lower die cavity to deform, the surface skin is driven to deform synchronously, and the tight fit with the outer surface of the back plate is realized, so that the edge position of the surface skin is completely and smoothly fitted with the back plate, and the negative angle position on the back plate can be easily fitted with the surface skin by the composite sticking mode.

As an improvement, the upper end of the upper die is provided with an accommodating cavity so as to form a cavity between the upper die and the upper die plate, and the lower end surface of the upper die is provided with a plurality of through holes communicated with the cavity; and the upper template is provided with an air exhaust device for enabling negative pressure in the cavity to realize adsorption and limit on the back plate. What be used for injecing the stop gear of backplate product in this structure adopted is the absorbent structure of negative pressure, through set up the negative pressure cavity on last mould, realizes product absorption location through the negative pressure principle, simple structure, convenient operation to can not produce the damage to the product surface.

And the chamber is internally provided with a plurality of driving cylinders, and piston rods of the driving cylinders are in one-to-one correspondence with the through holes. The driving cylinder structure is used for realizing quick demoulding of products and improving the working efficiency.

And in the improvement, a plurality of guide rods are arranged on the lower end surface of the upper template along the circumferential direction, and a plurality of guide shaft sleeves matched with the guide rods are arranged on the upper end surface of the lower template along the circumferential direction. The guide rod and the guide shaft sleeve are additionally arranged in the structure, so that the upper die and the lower die can be accurately kept in the same position for matching when the dies are closed at each time, and the pressing precision of a product is guaranteed.

And the lower end surface of the upper template is provided with a plurality of limiting shafts along the circumferential direction, the upper end surface of the lower template is provided with a plurality of supporting rods which are in one-to-one correspondence with the limiting shafts along the circumferential direction, and the heights of the supporting rods are adjustable. The limiting shaft is arranged for limiting and controlling the movable distance between the upper die and the lower die, so that the phenomenon that a product is crushed due to overlarge moving stroke during die assembly is avoided; in addition, the supporting rod with adjustable height is additionally arranged in the structure, so that the die can be suitable for products with different specifications, and the universality is stronger.

And the support rod comprises a mounting block fixedly connected with the lower template, a threaded hole is formed in the upper end of the mounting block, an adjusting bolt is arranged in the threaded hole in a matched mode, and a fastening nut is arranged at one end, close to the mounting block, of the adjusting bolt in a matched mode. The supporting rod is simple in structure, only the fastening nut needs to be loosened firstly during height adjustment, the height adjustment can be achieved by screwing the adjusting bolt, the fastening nut continues to be screwed after the height is adjusted to the required height, and the operation is simple and convenient.

Correspondingly, the other technical scheme adopted by the invention is as follows: the method for compounding the back panel skin comprises the following steps:

s1: coating glue on the surface to be compounded;

s2: the surface skin is flatly paved on a silica gel plate to ensure that the surface skin is placed at an accurate set position;

s3: placing the backboard heated to 150 ℃ in a limiting mechanism on an upper die;

s4: go up mould, bed die compound die to form the enclosure space between the mould, aerify from the lower mould intracavity of bed die, utilize gaseous pressure oppression silica gel board up tensile deformation, thereby drive the inseparable laminating of epidermis on the backplate, glue on the backplate is activated to the backplate release heat of high temperature, and after the cooling, the epidermis is in the same place with the backplate is closely laminated.

In the skin compounding method, the convex deformation of the silica gel plate towards the position of the backboard substrate is realized by inflating the lower die cavity, so that the skin is driven to move towards the position of the backboard substrate, and in the heat release process of the preheated backboard, the glue pre-coated on the skin is activated, so that the bonding of the skin and the backboard is realized, the operation is simple, the compounding efficiency is high, the complete bonding of the skin and the backboard can be ensured, and the appearance quality of a product is improved.

Drawings

Fig. 1 is a structural view of a back sheet skin composite mold of the present invention.

Fig. 2 is an exploded view of the back panel skin composite mold of the present invention.

Fig. 3 is a structural view of an upper mold in the present invention.

Fig. 4 is an enlarged view of X in fig. 1.

Wherein, 100-backboard, 101-epidermis;

1-upper template, 2-lower template, 3-upper die, 3.1-containing cavity, 3.2-through hole, 4-lower die, 4.1-lower die cavity, 5-silica gel plate, 6-driving cylinder, 7-guide rod, 8-guide shaft sleeve, 9-limiting shaft, 10-support rod, 10.1-mounting block, 10.2-adjusting bolt and 10.3-fastening nut.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

In the description of the present invention, it should be noted that the terms "upper", "lower", "upper end face", "lower end face", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the invention provides a back plate and skin composite die, which comprises an upper die plate 1 and a lower die plate 2, wherein specifically, the upper die plate 1 is a movable die plate, and the upper end of the upper die plate 1 is connected with a driving mechanism through an upper die holder; the lower template 2 is a static template and is fixed on the frame through a corresponding lower template base, and when the die is closed in work, the driving mechanism drives the upper template 1 to move towards the lower template 2.

Specifically, an upper die 3 is arranged on the upper die plate 1, and a limiting mechanism for positioning the backboard 100 is arranged at the lower end of the upper die 3; be equipped with bed die 4 on the lower bolster 2, the up end indent of bed die 4 forms and goes up mould 3 and cooperate lower die cavity 4.1, and bed die cavity 4.1 is linked together with the gas blowing device of peripheral hardware, and the up end of bed die 4 is sealed be equipped with be used for placing treat compound epidermis 101 silica gel board 5 so that bed die cavity 4.1 form the confined space, during the compound die, go up mould 3 and drive backplate 100 of its lower extreme and go down the cooperation in bed die cavity 4.1, gas blowing device toward bed die cavity 4.1 in blow and impel silica gel board 5 to warp to make the closely compound lower terminal surface of pasting at backplate 100 of epidermis 101 of keeping flat on silica gel board 5. In this embodiment, the skin 101 is PVC leather, but in other embodiments, it may be made of other materials, such as: fabrics and the like.

In this structure, in order to guarantee that epidermis 101 can realize accurate laminating with backplate 100, be drawn with corresponding position lines on silica gel plate 5, aim at according to the position lines when placing epidermis 101 at every turn.

In this embodiment, the limiting mechanism for positioning the backboard 100 adopts a structure based on a negative pressure adsorption principle, specifically, an accommodating cavity 3.1 is formed at the upper end of the upper mold 3 in a concave manner, so that a sealed cavity is formed between the upper mold 3 and the upper mold plate 1, and a plurality of through holes 3.2 communicated with the cavity 3 are arranged on the lower end surface of the upper mold 3, as shown in fig. 3; moreover, an air extractor is arranged on the upper template 3, when the air extractor sucks air in the cavity, negative pressure is formed in the cavity, and under other actions, the back plate 100 is adsorbed on the lower end face of the upper mold 3; the air extracting device can be a vacuum air extracting pump or an air extracting fan or other devices capable of realizing air extraction.

In addition, in the embodiment, in order to facilitate the demolding of the back plate 100, a plurality of driving cylinders 6 are arranged in the cavity, and piston rods of the driving cylinders 6 correspond to the through holes 3.2 one by one; during the compound pasting action of the back plate 100 and the surface skin 101, the driving cylinder 6 is in a retraction state, and each through hole 3.2 is communicated with the cavity at the moment; after the backboard 100 and the surface 101 are bonded, the upper and lower templates are opened, the driving cylinders 6 are extended to move, and the piston rods of the driving cylinders 6 are extended to move along the through holes 3.2 on the upper die 3 to push the backboard 100 to be demoulded. The driving cylinder in the embodiment is an air cylinder, so that the driving control is convenient, and an air source is stable; of course, in other embodiments, the driving cylinder 6 may also be a hydraulic cylinder or an electric push cylinder structure.

As shown in fig. 1 and 2, a plurality of guide rods 7 are circumferentially arranged on the lower end surface of the upper die plate 1, and a plurality of guide shaft sleeves 8 matched with the guide rods 7 are circumferentially arranged on the upper end surface of the lower die plate 2. Specifically, four angular positions of cope match plate 1 are equipped with guide bar 7 that extend down respectively, and is corresponding, be equipped with in four angular positions of cope match plate 2 with each guide bar 7 sliding fit direction axle sleeve 8, and it is spacing to realize the position when cope match plate 1 reciprocates, reciprocates the in-process and can not take place lateral deviation, guarantees the exact fit of cope match plate 3 and bed die 4, improves the off-the-shelf qualification rate.

On the other hand, a plurality of limiting shafts 9 are further arranged on the lower end surface of the upper template 1 along the circumferential direction, and a plurality of supporting rods 10 which are in one-to-one correspondence with the limiting shafts 9 are arranged on the upper end surface of the lower template 2 along the circumferential direction; similarly, in the present embodiment, as shown in fig. 1 and 4, the four corners of the upper die plate 1 and the positions close to the guide rods 7 are provided with downwardly extending limiting shafts 9, and the four corners of the lower die plate 4 and the positions close to the guide shaft sleeves 8 are provided with corresponding support rod 10 structures; when the die is closed, the lower end faces of the limiting shafts 9 on the upper die plate 1 are abutted against and matched with the upper end faces of the supporting rods 10, so that the limitation of the descending position of the upper die plate 1 is realized; in addition, in order to realize the adjustment of the downward displacement of the upper template 1, the heights of the plurality of support rods 10 are adjustable, and the adjustment of the downward displacement of the upper template 1 is realized by adjusting the heights of the support rods 10.

As shown in fig. 4, the height adjusting mechanism of the support bar 10 in this embodiment is as follows: the support rod 10 comprises an installation block 10.1 fixedly connected with the lower template 2, a threaded hole is formed in the upper end of the installation block 10.1, an adjusting bolt 10.2 is arranged in the threaded hole in a matched mode, and a fastening nut 10.3 is arranged at one end, close to the installation block 10.1, of the adjusting bolt 10.2 in a matched mode.

Correspondingly, the invention provides a backboard skin compounding method, which comprises the following steps:

s1: coating glue on the surface 101 to be compounded;

s2: the skin 101 is flatly laid on the silica gel plate 5 to be placed at an accurate set position;

s3: placing the backboard 100 heated to 150 ℃ in the limiting mechanism on the upper die 3;

s4: go up mould 3, lower mould 4 compound die to form the enclosure space between the mould, aerify from the lower mould intracavity of lower mould 4, utilize gaseous pressure oppression silica gel plate 5 up tensile deformation, thereby drive the inseparable laminating of epidermis 101 on backplate 100, the backplate 100 of high temperature releases the glue on the heat activation epidermis 101, and after the cooling, epidermis 101 is in the same place with backplate 100 is closely laminated.

The working principle is as follows:

firstly, placing a skin 101 to be compositely pasted at a corresponding line position on a silica gel plate 5, and smearing a certain amount of glue on the upper surface of the skin 101 in advance; then adsorbing and positioning the back plate heated to about 150 degrees on the upper die 3, wherein in the process, the back plate 100 is a high-temperature body and is conveyed to the lower end face of the upper die 3 by a manipulator, and the back plate is adsorbed and positioned by negative pressure; the upper and lower templates are matched, the upper mold 3 and the backboard 100 move downwards to be matched in a lower mold cavity 4.1 of the lower mold 4, in the matching process, the surface skin 101 is aligned and pressed on the lower end face of the backboard 100, the silica gel plate 5 deforms, at the moment, air is continuously introduced into the lower mold cavity 4.1, the silica gel plate 5 is driven to deform upwards in a reverse direction under the action of gas pressure, so that the surface skin 101 is driven to be precisely attached to the lower surface of the backboard 100, the surface skin 101 is driven to be tightly adhered after the glue on the surface skin 101 is activated by the heat of the backboard 100, and the two components are compounded and adhered into a whole after the backboard 100; after the mould is opened, the corresponding driving cylinder 6 on the upper mould 3 extends out, and each piston rod penetrates through the through hole 3.2 to eject the back plate 100, so that the quick demoulding is realized.

The foregoing has described preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary, and various changes made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a compound mould of backplate epidermis, includes cope match-plate pattern (1) and lower bolster (2), its characterized in that: an upper die (3) is arranged on the upper die plate (1), and a limiting mechanism for positioning the back plate (100) is arranged at the lower end of the upper die (3); lower bolster (2) on be equipped with bed die (4), the up end indent of bed die (4) form and last mould (3) cooperate down die cavity (4.1), bed die cavity (4.1) be linked together with the gas blowing device of peripheral hardware, the sealed silica gel board (5) that are used for placing treating compound epidermis (101) that are equipped with of up end of bed die (4) so that bed die cavity (4.1) form confined space, during the compound die, last mould (3) drive backplate (100) of its lower extreme cooperate down in bed die cavity (4.1), gas blowing device toward bed die cavity (4.1) in blow and impel silica gel board (5) to warp to make epidermis (101) on silica gel board (5) of keeping flat closely compound the lower terminal surface of pasting at backplate (100).

2. The back-sheet skin composite mold of claim 1, wherein: an accommodating cavity (3.1) is formed in the upper end of the upper die (3) so that a cavity is formed between the upper die (3) and the upper template (1), and a plurality of through holes (3.2) communicated with the cavity (3) are formed in the lower end face of the upper die (3); and the upper template (3) is provided with an air extractor for enabling negative pressure to be formed in the chamber to realize adsorption and limiting on the back plate (100).

3. The back-sheet skin composite mold of claim 2, wherein: the cavity is internally provided with a plurality of driving cylinders (6), and piston rods of the driving cylinders (6) are in one-to-one correspondence with the through holes (3.2).

4. The back-sheet skin composite mold of claim 1, wherein: the lower end face of the upper template (1) is provided with a plurality of guide rods (7) along the circumferential direction, and the upper end face of the lower template (2) is provided with a plurality of guide shaft sleeves (8) matched with the guide rods (7) along the circumferential direction.

5. The back-sheet skin composite mold according to claim 1 or 4, wherein: the lower end face of the upper template (1) is provided with a plurality of limiting shafts (9) along the circumferential direction, the upper end face of the lower template (2) is provided with a plurality of supporting rods (10) which are in one-to-one correspondence with the limiting shafts (9) along the circumferential direction, and the height of the supporting rods (10) is adjustable.

6. The back-sheet skin composite mold of claim 5, wherein: the utility model discloses a fixing device for fixing the supporting rod, including bracing piece (10) be connected fixed installation piece (10.1) with lower bolster (2), the upper end of installation piece (10.1) is equipped with the screw hole, the screw hole in set adjusting bolt (10.2), just adjusting bolt (10.2) are close to the one end of installation piece (10.1) and are set fastening nut (10.3).

7. A back plate skin compounding method is characterized by comprising the following steps:

s1: coating glue on the surface (101) to be compounded;

s2: the skin (101) is laid on the silica gel plate (5) to be placed at an accurate set position;

s3: placing a backboard (100) heated to 150 ℃ in a limiting mechanism on an upper die (3);

s4: go up mould (3), bed die (4) compound die to form the enclosure space between the mould, aerify from the lower mould intracavity of bed die (4), utilize gaseous pressure oppression silica gel board (5) tensile deformation up, thereby drive the inseparable laminating of epidermis (101) on backplate (100), glue on high temperature backplate (100) release heat activation epidermis (101), after the cooling, epidermis (101) are in the same place with backplate (100) close adhesion.