KR20090125503A - Metallic pattern and method for manufactruing head rest - Google Patents

Abstract

PURPOSE: A head rest manufacturing mold and a method for manufacturing a head rest using the same are provided to the filler loss in the filler charging and to permanently use a liquid injection guild. CONSTITUTION: A head rest manufacturing mold comprises a headrest cover, a mold body(10) and a cylindrical liquid injection guide(40). A filler is inserted through an opening of the headrest cover. The headrest cover is settled on the mold body. The mold body comprises a recessed part(20). The filler inserted into the headrest cover is accepted in the recessed part. The cylindrical liquid injection guide is inserted into the opening. The cylindrical liquid injection guide guides the filler to be inserted to the inside of the headrest cover.

Description

Method for manufacturing headrest using headrest manufacturing mold and headrest manufacturing mold {METALLIC PATTERN AND METHOD FOR MANUFACTRUING HEAD REST}

The present invention relates to a headrest manufacturing mold, and more particularly, to a headrest manufacturing mold used to manufacture a headrest by injecting a filler into the headrest cover.

The car seat supports the head rest and arms that support the passenger's head.

The basement consists of an arm rest and lumber support that supports the sides.

Among such configurations, the headrest related to the present invention includes a headrest cover, a form filled in the headrest cover, and a stay for coupling the headrest to the upper portion of the seat.

The headrest cover, the method of manufacturing the headrest consisting of foam and stay is largely divided into the epidermal separation type production method and the epidermal integral type production method.

The skin separation type manufacturing method is to assemble a stay into a mold for forming a mold in a predetermined shape, inject a filler to form a foam, and cover the surface of the molded foam with a headrest cover to complete the product. After assembling the stay inside the headrest cover to fix the headrest cover to the mold for molding and then molding the foam using the injection nozzle.

Among these, the epidermal separation type manufacturing method is mainly formed at a relatively high temperature, the molding time is very long, the work efficiency is remarkably decreased, and since the deformation occurs by forming at a high temperature, the epidermal integral manufacturing method is mainly used. .

 However, the conventional epidermal body forming method has a problem in that the cost is increased when the filler is formed in the headrest cover and the filler is opened by injecting the filler by opening the filler, thereby spreading the filler out of the headrest cover. There was a problem.

In order to solve this problem, the registered utility model No. 20-2006-0009363 inserts a separate filler injecting funnel into the headrest cover and injects the filler into the mass production through automation and filling of the filler to the outside of the headrest cover. Fixed a scattering problem.

However, when the filler injection funnel is used, the filler is stuck around the funnel, and a part of the filler is discarded, and the filler injection funnel must be produced separately, and the process of cutting the filler injection funnel after the filler injection is added. This increasing problem has appeared.

The present invention has been made to solve the above-mentioned problems of the prior art, to provide a headrest manufacturing mold that can reduce the consumption of the filler when molding the headrest, and reduce the production cost by reducing the auxiliary materials required for filler injection.

The headrest manufacturing mold according to the present invention includes a headrest cover having an opening portion formed therein so as to inject a filler, a mold body having a recessed portion in which the headrest cover is seated and receiving a filler injected into the headrest cover, and the mold body. And a cylindrical liquid injection guide inserted into the opening to allow filler to be injected into the headrest cover that is seated in the recess.

Here, the liquid injection guide is formed with an inner diameter of a predetermined size so as not to contact the filler during filler injection.

In addition, the concave portion is formed on the front surface of the mold body to open the front and upper surface of the mold body, the hook is fixed to the upper side of the mold body fixing the opening of the headrest cover.

In addition, the transfer means is coupled between the rear surface of the mold body and the outer surface of the liquid injection guide, inserting the liquid injection guide in the opening of the headrest cover seated in the depression.

At this time, the conveying means is characterized in that at least one hydraulic or pneumatic cylinder.

In addition, the cover is rotatably coupled to the front surface of the mold body to open and close the depression.

A method of manufacturing a headrest by injecting a filler into a headrest cover having an opening in which a filler is injected, the method of manufacturing a headrest mold including a liquid injection guide which is automatically transferred and a recess in which the headrest cover is seated. Fixing the headrest cover to the depression, inserting the liquid injection guide into the opening, injecting a filler through the liquid injection guide, and inserting the liquid injection guide inserted into the opening. Separating and foaming the filler within the headrest cover.

Headrest manufacturing mold according to the present invention configured as described above is seating the headrest cover on the mold body, and then the filler is injected into the inside of the headrest cover through the liquid injection guide interlocked with the inside of the headrest cover, It can prevent the loss of filler that can be caused by spraying to the outside of the headrest cover during the process.Also, the filler does not touch the liquid injection guide, so the liquid injection guide can be used permanently, so that no consumables such as filler injection funnel are generated. The cost can be reduced.

Hereinafter, a preferred embodiment of the headrest manufacturing mold according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

In addition, the following examples are not intended to limit the scope of the invention, but merely illustrative of the components set forth in the claims of the present invention, which are included in the technical spirit throughout the specification of the present invention and components of the claims Embodiments including a substitutable component as an equivalent in may be included in the scope of the present invention.

Example

1 is a perspective view of a headrest manufacturing mold according to a preferred embodiment of the present invention, Figure 2 is a side view of the headrest mold shown in Figure 1, Figure 3 is a state diagram of the use of the headrest mold shown in FIG. 4 is an operation of the headrest mold shown in FIG.

1 to 3, the head rest manufacturing mold 1 according to an embodiment of the present invention includes a headrest cover 30 having an opening 32 formed therein for filling filler, and a headrest. The headrest cover is seated on the mold body 10 having the depression 20 formed in the shape of the outer surface of the headrest cover on which the cover 30 is seated, and the depression 20 of the mold body 10. It includes a cylindrical liquid injection guide 40 is inserted to be injected into the interior of the (30).

The headrest cover 30 forms a headrest by filling the filler into the outer shell portion of the headrest. An opening 32 is formed in the upper portion of the headrest cover (in the case of the headrest coupled to the seat) to allow filler to be injected.

In addition, the headrest stay 34 is coupled to the opening portion 32 side as shown in FIG.

The filler to be filled in the headrest cover 30 may be used in a variety of materials, but in this embodiment, a polyurethane foam that is foamed after injection and molded into the shape of the headrest cover is used.

After the headrest cover 30 is seated on the mold body 10 and the filler is foamed, the headrest cover 30 is not deformed by the internal pressure generated by the filler. The depression 20 is formed corresponding to the shape of the outer surface of the completed headrest for receiving the filler filled in the.

The liquid injection guide 40 is inserted into the opening 32 of the headrest cover 30 to prevent the filler from being scattered to the epidermis of the headrest cover 30 when the filler is injected. The shape of is formed in the shape of a cylindrical column, and is formed with a sufficient inner diameter so that the filler does not touch the inner peripheral surface of the liquid injection guide during filler injection. In the present embodiment, the liquid injection guide 40 was formed to have a diameter of about 5 cm.

The mold body 10 will be described in more detail. The recess 20 in which the headrest cover 30 is seated and the filler injected into the headrest cover is opened opens the front and top surfaces of the mold body 10. It is formed on the front surface of the mold body 10 so that the upper side of the mold body 10, the hook 12 for fixing the opening 32 of the headrest cover 30 to the mold body 10 is coupled do.

In addition, a mold top plate 14 is coupled to an upper surface of the mold body 10, and a headrest stay 34 fixed to the headrest cover 30 is coupled to both sides of the upper surface of the mold upper plate 14, thereby providing a headrest cover. The stay fixing part 18 in which the stay clamp 18a which fixes 30 is formed, and the headrest stay insertion groove 18b are formed.

The headrest clamp 18a is formed in the shape of a part of the outer circumferential surface of the headrest stay 34 to elastically support the outer circumferential surface of the headrest stay 34, and the headrest stay insertion groove 18b is formed in a semicircular shape to provide the headrest. Support the end of the stay.

In addition, both sides of the mold body 10 is rotatably coupled to the hook 12 for fixing the opening of the headrest cover 30.

Accordingly, in the headrest cover 30 seated on the depression 20 of the mold body 10, the end of the headrest stay 34 is inserted into the headrest stay insertion groove 18b, and the headrest stay 34 is formed. One end of the) is coupled to the headrest stay clamp 18a, the opening 32 of the headrest cover 30 is fixed by the hook 12 formed on the side of the mold body 10, the mold body 10 It is firmly fixed to the depression 20 of.

In addition, the transfer means is coupled between the rear surface of the mold body and the outer surface of the liquid injection guide, inserting the liquid injection guide in the opening of the headrest cover seated in the depression.

As the transfer means, an actuator, rail and linear motor, etc., which are connected to a control device and operated by an electric motor, hydraulic pressure or pneumatic pressure, may be used. However, in this embodiment, pneumatic cylinders 42 and 44, which are a kind of actuator, are used.

Specifically, the first pneumatic cylinder 42 is coupled to the rear surface of the mold body 10, the second pneumatic cylinder 44 is coupled to one side of the rod 42a of the first pneumatic cylinder, the rod of the second pneumatic cylinder The outer circumferential surface of the liquid injection guide 40 is coupled to 44a.

The operation of the first pneumatic cylinder 42 and the second pneumatic cylinder 44 coupled as described above will be described with reference to the operation diagrams shown in FIGS. 4A to 4D.

The rod 42a of the first pneumatic cylinder 42 and the rod 44a of the second pneumatic cylinder 44 are placed inside the first pneumatic cylinder 42 and the second pneumatic cylinder 44. Compressed air flows into the pneumatic cylinder 42 so that the rod 42a of the first pneumatic cylinder 42 is tensioned to the outside of the first pneumatic cylinder 42. Therefore, the liquid injection guide 40 coupled to the second pneumatic cylinder 44 and the rod 44a of the second pneumatic cylinder 44 is transferred to the upper portion of the mold body 10.

In this state, compressed air flows into the second pneumatic cylinder 44, the rod 44a of the second pneumatic cylinder 44 is tensioned, the rod of the first pneumatic cylinder 42 is contracted, and the headrest cover 30 The liquid injection guide 40 is inserted into the opening 32 of the.

After the liquid injection guide is inserted into the opening 40 of the headrest cover 30, a filler is injected into the center of the liquid injection guide 40 and injected into the headrest cover 30.

In this case, the filler may be injected through an injection nozzle (not shown) formed in a separate injection device.

The liquid injection guide 40 formed with a sufficient diameter prevents the filler from contacting the inner circumferential surface of the liquid injection guide 40 when the filler is injected, thereby reducing the consumption of filler that is not injected into the headrest cover 30. Will be.

When the filler is evenly injected into the headrest cover 30, the first pneumatic cylinder 42 and the second pneumatic cylinder 44 operate in the reverse order to the insertion process of the liquid injection guide 40.

In addition, the cover 50 is rotatably coupled to the lower part of the front surface of the mold body 10 to open and close the front and top surfaces of the mold body opened by the depression 20. The cover functions to support the headrest cover 30 in which the filling of the filler is completed by closing the electric light and the upper surface of the mold body 10.

Since the filler filled in the headrest cover 30 generates bubbles inside the exothermic reaction and exerts pressure on the outside of the headrest cover 30, the headrest cover 30 is deformed by such pressure. Can be. Therefore, the cover 50 is used to prevent such deformation.

The cover 50 includes a lower cover 52 for closing the open front surface of the mold body 10 by the depression 20 and an upper cover 54 for closing the open upper surface of the mold body 10.

The hinges 52a and 54a are rotatably coupled between the upper cover 54 and the lower cover 52, the lower cover 52, and the mold body 10, respectively.

In this case, recesses 52b and 54b are formed in the lower cover 52 and the upper cover 54 as shown in FIGS. 1 and 3. The depression is formed in the shape of the outer shape of the finished product of the headrest cover to which the filler is injected to prevent deformation of the headrest cover 30 due to the pressure of the filler injected into the headrest cover 30.

In addition, a fixing hook 54c is hinged to the upper cover 54, and a fixing protrusion 16 to which the fixing hook 54c is fixed is formed on the mold upper plate 14, so that the lower cover 52 and the upper cover ( 54 closes the open part of the mold body 10 and then couples the fixing hook 54c to the fixing protrusion 16.

Method for manufacturing a headrest using a headrest manufacturing mold of a preferred embodiment of the present invention is as follows.

Fixing the headrest cover to the depression of the headrest manufacturing mold, inserting the liquid injection guide into the opening, injecting filler through the liquid injection guide, and separating the liquid injection guide from the opening. And a step of filling the filler inside the headrest cover to produce the headrest.

This method is described below with reference to FIG. 5.

end. Headrest cover fixing step (100)

The headrest cover 30 having the opening portion 32 and the headrest stay 34 is fixed to the recessed portion 20 of the headrest manufacturing mold 1. Fixing the headrest cover 30 seats and fixes the headrest stay 34 to the headrest stay clamp 18a and the headrest stay insertion groove 18b, and the hook 12 coupled to the side of the mold body 10. ) Is fixed to the opening portion 32 of the headrest cover.

I. Liquid injection guide insertion step (110)

The liquid injection guide using the first pneumatic cylinder 42 and the second pneumatic cylinder 44 coupled to the mold body 10 to the opening 32 of the headrest cover 30 fixed by the hook 12 Insert 40). The operation method of the first pneumatic cylinder 42 and the second pneumatic cylinder 44 in this process is omitted as described above.

All. Filler injection step 120

The filler is injected through the nozzle through the liquid injection guide 40 inserted into the opening 32. At this time, the liquid injection guide 40 is formed to a sufficient diameter so that the filler to be injected does not touch the filler is injected directly into the headrest cover (30).

la. Liquid injection guide separation step (130)

When sufficient filler is injected into the headrest cover 30, the first pneumatic cylinder 42 and the second pneumatic cylinder 44 operate in the reverse order to the liquid injection guide insertion step 110 to inject liquid. The guide 40 is separated from the opening 32 of the headrest cover.

hemp. Foam molding step of filler 140

When the liquid injection guide 40 is separated, the headrest cover 30 is fixed to the headrest manufacturing mold 1 to which the filler injected into the headrest cover 30 is sufficiently foamed. At this time, as the filler is foamed, pressure may be generated to deform the shape of the headrest cover 30, thereby wrapping the headrest cover 30 using the cover 50 coupled to the mold body 10.

After this step, when the filler in the headrest cover 30 is molded, the headrest cover is separated from the mold body.

1 is a perspective view of a headrest manufacturing mold according to an embodiment of the present invention.

FIG. 2 is a side view of the headrest mold shown in FIG. 1. FIG.

Figure 3 is a state of use of the headrest mold shown in FIG.

4A-4D are operational views of the headrest mold shown in FIG.

FIG. 5 is a process diagram schematically illustrating a method of manufacturing a headrest using the headrest manufacturing mold shown in FIG. 1. FIG.

<Description of the symbols for the main parts of the drawings>

One; Headrest manufacturing mold 10; Mold body

12; Hook 14; Mold tops

16; Fixed protrusion 18; Stay fixing part

18a; Headrest stay clamp 18b; Headrest Stay Inserts

20; Depression 30; Headrest cover

32; Opening 34; Headrest stay

40; Liquid injection guide 42; First pneumatic cylinder

44; Second pneumatic cylinder 50; cover

52; Lower cover 54; Top cover

Claims (7)

A headrest cover having an opening formed to inject filler; A mold body in which the headrest cover is seated, and having a recess in which the filler injected into the headrest cover is accommodated; And And a cylindrical liquid injection guide inserted into the opening to allow filler to be injected into the headrest cover seated in the depression of the mold body. The method of claim 1, The liquid injection guide is a headrest manufacturing mold, characterized in that formed with an inner diameter of a predetermined size so as not to contact with the filler during filler injection. The method of claim 2, The depression is formed on the front surface of the mold body to open the front and upper surface of the mold body, the headrest manufacturing mold, characterized in that the hook to secure the opening of the headrest cover is coupled to the upper side of the mold body . The method according to any one of claims 1 to 3, And a transfer means coupled between the rear surface of the mold body and the outer surface of the liquid injection guide and inserting the liquid injection guide into an opening of the headrest cover seated in the depression. Rest manufacturing mold. The method of claim 4, wherein The transfer means is a headrest manufacturing mold, characterized in that at least one hydraulic or pneumatic cylinder. The method of claim 4, wherein The headrest manufacturing mold, characterized in that the cover is rotatably coupled to the front surface of the mold body for opening and closing the depression. Fill the filler inside the headrest cover with the opening into which the filler is injected. In the method for producing a headrest, Fixing the headrest cover to the depression of the headrest manufacturing mold having a depression to which the liquid injection guide and the headrest cover are automatically transferred; Inserting a liquid injection guide into the opening; Injecting filler through the liquid injection guide; Separating the liquid injection guide inserted into the opening; And And a filler is foamed in the headrest cover.

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