KR101622984B1 - Air-compression molding apparatus with hydraulic locking cam - Google Patents

Air-compression molding apparatus with hydraulic locking cam Download PDF

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Publication number
KR101622984B1
KR101622984B1 KR1020160023880A KR20160023880A KR101622984B1 KR 101622984 B1 KR101622984 B1 KR 101622984B1 KR 1020160023880 A KR1020160023880 A KR 1020160023880A KR 20160023880 A KR20160023880 A KR 20160023880A KR 101622984 B1 KR101622984 B1 KR 101622984B1
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KR
South Korea
Prior art keywords
locking
air
mold table
mold
hydraulic
Prior art date
Application number
KR1020160023880A
Other languages
Korean (ko)
Inventor
박병환
Original Assignee
주식회사 한성솔루텍
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Priority to KR1020160023880A priority Critical patent/KR101622984B1/en
Application granted granted Critical
Publication of KR101622984B1 publication Critical patent/KR101622984B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/38—Opening, closing or clamping means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The present invention relates to an air-compression molding apparatus, which comprises: a mold table (110) capable of being elevated by an elevation unit (125); an air-compression chamber (150) installed at the top of the mold table (110), capable of being elevated by an elevation unit (165) and carrying out air-compression molding of a resin sheet heated by a heater on the mold surface; a locking member (118) installed in the mold table movably by a cylinder; and a plurality of locking bars (130) fixed to the air-compression chamber (150), longitudinally passing through the opening formed on the mold table and having a locking groove (132). The air-compression molding apparatus equipped with a hydraulic locking cam for preventing air leakage from the air-compression chamber further comprises a hydraulic licking cam (140) individually formed in the locking bar (130) to further elevate the mold table (110) by 3-8 mm, when the mold table (110) is elevated for molding and the locking member (118) is moved by the cylinder (117) and inserted into the locking groove (132) so that it may be in a first locking state, and thus to reinforce the contact between the mold table (110) and the air-compression chamber (150). According to the present invention, it is possible to prevent movement of the mold table and leakage of high-pressure air in the air-compression chamber, and thus to improve the quality of an air-compression molded product.

Description

[0001] The present invention relates to an air-compression molding apparatus with a hydraulic locking cam,

The present invention relates to an air pressure forming apparatus provided with a hydraulic locking cam for preventing air leakage from an air chamber, and more particularly, to a press forming apparatus including a mold table 110 formed to be raised and lowered by a lifting apparatus 125, A pressurizing chamber 150 which is installed on the mold table and is formed so as to be slid by the lifting device 165 so as to press-mold the resin sheet heated by the heating device on the surface of the mold, And a plurality of locking bars (130) fixed to the pressurizing chamber (150) and having a locking groove (132) formed in the mold table so as to pass through the upper and lower sides, the pressure molding apparatus comprising:

When the mold table 110 is lifted for molding, the locking member 118 is moved by the cylinder 117 to be inserted into the locking groove 132 in the primary locking state, And a hydraulic locking cam 140 formed on each of the locking bars 130 so as to increase the adhesion of the mold table 110 and the pressure chamber 150 by further raising the mold table 110 by 3 to 8 mm. And a hydraulic locking cam for preventing air leakage from the pressure chamber.

The applicant of the present application has been registered and registered with the Korean Patent No. 10-1537504 (a method of forming a refrigerator case by a vacuum and a pressure cavity and a molding apparatus) by preliminarily forming a vacuum and pressure molding technique in which a mold table and an upper chamber are formed at a lower portion thereof, No. 10-1537504, a large number of molding apparatuses were produced and delivered. During the molding process, the mold base was pushed down by the strong force of the high pressure air of 4 to 9 bar formed in the pressure chamber, Pressure air leaks between the pressurizing chamber and the mold support, thereby deteriorating the quality of the product.

It is an object of the present invention to improve the quality of a product by urgently urging the mold table to be pushed by the high pressure air of the pressure chamber and to solve the problem by installing a hydraulic locking cam in each of the locking bars. In the first locking state of the locking chamber and the mold table for molding, the mold table is further lifted up by a predetermined distance by the locking cam to solve the panning phenomenon of the mold table.

The present invention relates to a method and apparatus for solving the sliding of a mold table due to high-pressure air in a conventional pressure chamber. In the first locking state of the locking chamber and the mold table for molding, the mold table is lifted by a predetermined distance, And to provide an air pressure forming apparatus formed so as to prevent air leakage caused by development.

In order to achieve the above object, the present invention is characterized in that it comprises a mold table 110 formed to be lifted up and down by a lifting / lowering device 125, and a lifting / lowering device 165 installed above the mold table 110 A locking member 118 provided on the mold table and configured to be caused to flow by a cylinder, and a locking member 118 fixed to the pressing chamber 150, A pressure molding apparatus comprising a plurality of locking bars (130) penetrating through holes formed in a table and having locking grooves (132) formed therein;

When the mold table 110 is lifted for molding, the locking member 118 is moved by the cylinder 117 to be inserted into the locking groove 132 in the primary locking state, And a hydraulic locking cam 140 formed on each of the locking bars 130 so as to increase the adhesion of the mold table 110 and the pressure chamber 150 by further raising the mold table 110 by 3 to 8 mm. And a hydraulic locking cam for preventing air leakage from the pressure chamber.

The present invention is characterized in that four elevation shafts 120 are provided for each of the elevation shafts 120 and 160 so that the elevation shaft 160 moves up and down the pressure chamber 150 and the elevation shaft 120 moves up and down the mold table 110, And a pinion gear formed so as to move upward and downward while being meshed with the circular gear rotated by the drive motor. The mold table up / down device 125 and the up / down device 165 are coupled to the driving motor formed by one each of the rotating shaft and the gear, and are formed so as to move up and down by operating the pinion gear.

Four locking bars 130 are also formed, and a hydraulic locking cam 140 is formed on each of the locking bars 130.

And the locking cam is rotated by the operation of the hydraulic cylinder so that the locking bar is moved up and down by a few millimeters, preferably about 3 to 8 millimeters.

Also, the locking bar is formed with a locking groove 132. When the mold table 110 rises during molding, the locking member 118 installed on the mold table is advanced by the operation of the air cylinder to be inserted into the locking groove 132 to be locked will be.

In the molding process, high-pressure air (4 to 9 bar) is formed in the pressure chamber. The high-pressure air presses the heated resin sheet 170 onto the surface of the mold to mold the product into a mold. In the prior art, And the mold table are pushed downward, and air is leaked, which causes the quality of the pressure molding to deteriorate.

The mold table pressing phenomenon of the molding process is caused by a high pressure formed in the pressure chamber, a gap between the locking groove and the locking member, a mechanical coupling portion of the locking bar, and the like, Is difficult to solve.

Accordingly, in the present invention, when the mold table rises to a predetermined position and the hydraulic locking cam 140 is operated in the primary locking state in which the locking member 118 is inserted into the locking groove 132, And by tightening by the locking cam, the engagement between the pressure chamber and the mold table is further tightened and strengthened, thereby preventing the jamming phenomenon.

The pressure molding apparatus equipped with the hydraulic locking cam for preventing leakage of air in the air chamber of the present invention is for solving the panning phenomenon of the conventional mold table. When the mold table rises for molding, the locking member (118) There is an effect of preventing the pushing of the mold table 110 by the high-pressure air of the pressure chamber 150 by the secondary locking that raises the mold table by about 3 to 8 millimeters by the hydraulic locking cam in the first locked state formed by the hook .

In addition, the pressure molding apparatus provided with the hydraulic locking cam for preventing air leakage of the air chamber of the present invention has a significant contribution effect to the shortening of the molding time and the improvement of the product quality by preventing the air leakage in the pressure molding.

1 shows one aspect of the present invention.
2 is a schematic view showing a state in which the pressure chamber of the present invention is raised.
3 is a schematic view showing a state in which the pressure chamber of the present invention is lowered;
Figure 4 shows a photograph of a prototype of the hydraulic locking cam of the present invention.

FIG. 1 is a side view of the present invention. As shown in FIG. 1, an elevation shaft 160 for the compression chamber 150 and four elevation shafts 120 for the mold table 110 are vertically formed in the frame 100, Up and down movements of the pressurizing chamber 150 by the operation of the lifting / lowering device 165 and the lifting and lowering of the mold table 110 by the upward / downward force device 125 for the mold table.

The elevating and lowering devices 125 and 165 of the present invention are of the pinion ear type and are formed so as to move up and down by the driving motor along the vertical descent axis.

FIGS. 2 and 3 are schematic views for easy understanding of the locking structure. FIG. 2 shows a state in which the pressure chamber is raised, and FIG. 3 shows a state in which the pressure chamber is lowered for molding.

3, the mold table 110 on which the mold 115 is mounted is lifted by the lifting apparatus. When the mold table 110 reaches a predetermined position, the cylinder 117 is actuated to advance the locking member 118, Is inserted into the locking groove 132 formed in the first housing 130, thereby forming a first-order king.

The upper and lower widths h of the locking grooves 132 are formed to include the thicknesses of the locking member and the resin sheet and the clearances required for smooth insertion and separation, In the locked state, there is a gap between the upper and lower ends of the locking groove and the locking member 118. In addition, there is a mechanical flow gap for fluidity in the mechanical joints such as the locking bar and the locking table, and such a mechanical flow gap occurs when the force is applied to the high-pressure air. Therefore, it can be seen that the pressing of the mold table by the high pressure air of the pressure chamber occurs by the intervals.

In the molding process, a high pressure of 4 to 9 bar is usually formed inside the pressure tank. Such a high pressure pushes the lower mold 115 and the mold support 110 downward, causing a panning phenomenon, will be.

2 and 3, a hydraulic locking cam 140 is installed in each of the four locking bars 130, and when the locking cam is rotated in the primary locking state between the locking groove and the locking member, The bar 130 is prevented from being pushed by the high-pressure air of the pressure chamber by the secondary locking that lifts the bar 130 upward by 3 millimeters or more.

The mold table 110 raised by a few millimeters by the locking cam 140 in the secondary locking state forms a more firm and tight coupling with the pressure chamber 150. [

FIG. 4 is a photograph showing the locking cam 140 in the prototype manufacturing process of the present invention. FIG. 4 is a photograph showing four locking bars 130 and showing a hydraulic cylinder 141 and a locking cam 140).

The configuration of the present invention is not limited to the above-described embodiments, but includes various embodiments that can be practiced within the ordinary skill in the art.

The present invention relates to a mold clamping apparatus and a mold clamping method for a mold clamping apparatus,

Claims (1)

A mold table 110 formed on the mold table 110 so as to be lifted up and down by a lifting and lowering device 125 and a resin sheet heated and raised by the lifting and lowering device 165, A locking member 118 provided on the mold table and configured to be caused to flow by a cylinder, a fixing member fixed to the pressing chamber 150 and passing through a hole formed in the mold table vertically, A compression molding apparatus including a plurality of locking bars (130) having grooves (132) formed therein, the compression molding apparatus comprising:

When the mold table 110 is lifted for molding, the locking member 118 is moved by the cylinder 117 to be inserted into the locking groove 132 in the primary locking state, And a hydraulic locking cam 140 formed on each of the locking bars 130 so as to increase the adhesion of the mold table 110 and the pressure chamber 150 by further raising the mold table 110 by 3 to 8 mm. And a hydraulic locking cam for preventing air leakage.
KR1020160023880A 2016-02-29 2016-02-29 Air-compression molding apparatus with hydraulic locking cam KR101622984B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160023880A KR101622984B1 (en) 2016-02-29 2016-02-29 Air-compression molding apparatus with hydraulic locking cam

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Application Number Priority Date Filing Date Title
KR1020160023880A KR101622984B1 (en) 2016-02-29 2016-02-29 Air-compression molding apparatus with hydraulic locking cam

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KR101622984B1 true KR101622984B1 (en) 2016-05-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102442062B1 (en) * 2021-05-07 2022-09-08 고모텍 주식회사 A clamping device for a vacuum forming machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100815803B1 (en) 2007-01-26 2008-03-20 엘에스전선 주식회사 Clamping system
KR101537504B1 (en) 2015-01-22 2015-07-16 주식회사 한성솔루텍 Apparatus and method for molding of the refrigerator case by vacuum and compressed air

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100815803B1 (en) 2007-01-26 2008-03-20 엘에스전선 주식회사 Clamping system
KR101537504B1 (en) 2015-01-22 2015-07-16 주식회사 한성솔루텍 Apparatus and method for molding of the refrigerator case by vacuum and compressed air

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102442062B1 (en) * 2021-05-07 2022-09-08 고모텍 주식회사 A clamping device for a vacuum forming machine

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