KR100963686B1 - Powder slush molding device - Google Patents

Abstract

Disclosed is a powder slush molding apparatus capable of molding a resin molded article with powder slush. Disclosed is a powder slush molding apparatus comprising a mold heating part, a powder slush part, a mold cooling part, and a robot arm, and comprising a mold heating part, a powder slush part, and a mold part transferred to the mold cooling part by a robot arm. A frame member coupled to an edge of the mold to open the molding surface of the mold and the rear surface of the molding surface, and a coupling protrusion coupled to one side of the frame member and gripped by the robot arm, and the mold heating portion is carried in the mold portion. An open surface is formed at an upper portion thereof, and a chamber formed at one side with a cutting groove communicating with the open surface is installed inside the chamber so that the engaging protrusion of the mold portion seated therein can be gripped by the robot arm. And a hot air supply port through which hot air is supplied to heat the molding surface of the mold and the rear surface of the molding surface. As described above, the disclosed invention can heat the mold more quickly, can omit the process of rotating the mold during cooling of the mold, thereby saving molding time and energy consumed by molding, and miniaturizing the powder slush molding apparatus. This reduces the space to be reserved.

Powder slush, mold heating part, mold cooling part, mold part, mold

Description

Powder Slush Molding Equipment {POWDER SLUSH MOLDING DEVICE}

The present invention relates to a powder slush molding apparatus, and more particularly, to a powder slush molding apparatus capable of simultaneously heating the molding surface of the mold and the rear surface of the molding surface.

In general, interior materials are attached to the front of the driver's seat or the inside of the door in the interior of the vehicle, such interior materials are not only functions to make the exterior of the interior of the vehicle beautiful, but also makes direct physical contact with the occupant in the event of an accident. By injecting a filler having elasticity such as polyurethane foam (polyurethane form) there is to perform a protective function for the occupant by the buffering force of the polyurethane foam.

On the other hand, in the method of molding the skin material of the automotive interior material using these materials, vacuum molding or powder slush method is widely used.

Among them, the powder slush method according to the present invention is a mold heating part for exhaling and heating a specific flow rate of a product for a mold, a powder slush part for forming a resin film having a predetermined thickness on the heated mold, and a mold for curing the vertical film by cooling the mold. After the resin is applied to the heated mold made of a cooling part with a predetermined thickness, there is an advantage in that a product having a desired texture can be obtained even if a complicated shape is formed by inserting a structural member that has already been molded and foaming urethane.

However, in the case of the molding apparatus used in the powder slush method, the molding apparatus is complicated because the mold must be rotated when the mold is heated, the resin powder is applied, and the product is demolded.

In addition, as the mold heating for the molding, the application of the powder slush, the cooling of the mold and the demoulding of the molded product are performed in order, the apparatus for performing each process is arranged in a row and there is a limitation in the installation place.

In addition, the heating of the mold requires heating in one direction, so it takes a long time to heat to the required temperature, and in order to shorten the time required to heat the mold, a large amount of energy must be applied to the mold, so that the temperature difference according to the part of the mold being heated. There was a problem that the damage and durability of the mold due to the thermal stress falls.

The present invention has been made in order to solve the above problems of the prior art, it is possible to simultaneously heat the mold surface and the rear surface of the mold surface, the mold can be heated to the required temperature without variation of the temperature, the mold 180 for each process It is to provide a powder slush molding apparatus that can be molded without the need to rotate, and does not require a large space for installation of the molding apparatus.

The powder slush molding apparatus according to the present invention includes a mold heating part, a powder slush part, a mold cooling part, and a robot arm, and a powder slush molding including a mold heating part, a powder slush part, and a mold part transferred to the mold cooling part by the robot arm. In the apparatus, the mold portion comprises a frame member coupled to the edge of the mold to open the molding surface of the mold and the rear surface of the molding surface, and a coupling protrusion coupled to one side of the frame member and gripped by the robot arm, The heating unit has an open surface formed at an upper portion so that the mold portion can be carried in, and a chamber in which a cutting groove communicating with the open surface is formed at one side so that the engaging protrusion of the mold portion seated therein can be gripped by the robot arm; It is installed in the chamber and includes a hot air supply port for supplying hot air to heat the molding surface of the mold and the rear surface of the molding surface.

In addition, the bottom surface of the chamber includes a heat recovery port for recovering the waste heat from heating the mold.

In addition, the mold portion is seated in the chamber so that one side faces the bottom surface of the chamber, the hot air supply port is installed on both sides of the interior of the chamber and the main hot air supply port for heating the mold surface and the rear surface of the mold surface, and the interior of the chamber It is installed in a direction perpendicular to the main hot air supply port includes a secondary hot air supply port for heating the mold.

In this case, the main hot air supply port is composed of a first hot wind supply port and a second hot wind supply port for heating the upper and lower portions of the molding surface of the mold seated in the chamber.

In addition, it includes a control stream rotatably coupled to the main hot air supply port for adjusting the direction of the hot air flowing from the hot air supply port.

At this time, the robot arm is provided with a multi-joint and comprises a finger device capable of holding the engaging projection, the mold heating unit, the powder slush unit, the mold cooling unit is installed continuously around the robot arm.

Powder slush molding apparatus according to the present invention configured as described above can be heated to the temperature required for the molding of the resin by heating the statement surface of the mold and the back of the molding surface at the same time, by uniformizing the temperature distribution of the mold during heating Damage to the mold due to thermal stress can be prevented.

In addition, during the heating process of the mold, the coating process of the resin powder, and the cooling process, the mold does not need to be rotated 180 °, thereby reducing energy consumption and improving productivity.

In addition, by heating the mold, coating the resin powder, cooling and demolding process can be achieved by arranging the mold heating unit, powder slush unit, and mold cooling unit to provide a more efficient use of space. have.

Hereinafter, a preferred embodiment of the powder slush molding apparatus 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, 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 substitutable components as equivalents in may be included in the scope of the present invention.

1 is an exemplary view showing an overall process applied to the powder slush molding apparatus according to an embodiment of the present invention, Figure 2 is a chamber of the mold portion and the mold heating portion used in the powder slush molding apparatus shown in FIG. 3 is a cross-sectional view taken along line III-III of the mold heating unit shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along line IV-IV of the mold heating unit shown in FIG. 1. In addition, Figure 5 is an exemplary view showing a state for transferring the mold portion of the powder slush molding apparatus shown in Figure 1 by the robot arm 400 in the mold heating portion.

1 and 2, according to an exemplary embodiment of the present invention, the robot arm 400, the mold heating part 100, the powder slush part 200, the mold cooling part 300, and the mold part 50 are provided. In the powder slush molding apparatus 1, the mold portion 50 is coupled to the edge of the mold 52, the frame member 56 for opening the molding surface 54 and the rear surface of the molding surface 54 and It is coupled to one side of the frame member 56 includes a coupling protrusion (60) gripped by the robot arm (400).

The robot arm 400 functions to transfer the mold unit 50 to the mold heating unit 100, the powder slush unit 200, and the mold cooling unit 300. The robot arm 400 is driven by pneumatic, hydraulic or motor driving. The part 50 is transferred to each molding process apparatus.

The mold heating unit 100 heats the mold 52 in order to apply the resin powder to the mold 52 and to fuse the mold 52. Is installed in the lower portion of the 110 consists of a hot air generating circulation device 150 for supplying hot air into the interior of the chamber (110).

The powder slush unit 200 is to apply a resin powder to the molding surface 54 of the mold heated in the mold heating unit 100 to contact the molding surface with a powder box containing the resin powder in the mold unit 50. The mold part 50 and the powder box may be rotated so that the resin powder in the powder box may be fused to the molding surface 54 by splicing the resin powder. The resin powder may be sprayed onto the molding surface 54 of the directly heated mold by fusion. You can also

The mold cooling unit 300 is for cooling the mold 52 in which the resin powder is fused to the molding surface 54 of the mold through the powder slush 200, and a water cooling or air cooling type cooling device is used to mold the mold 52. Cool)

The configuration of each functional device of the powder slush molding device 1 is sequentially arranged around the robot arm 400 as shown in FIG. 1, and the function performed by each device is carried out through the mold unit 50. Connected step by step.

This mold part 50 will be described in more detail with reference to FIG. 2 as follows.

The mold part 50 is comprised from the metal mold | die 52, the frame member 56, and the engaging protrusion 60. As shown in FIG.

Frame member 56 is coupled to the frame member 56 formed in a substantially rectangular shape and the edge of the mold 52 is coupled to the inner edge of the frame member 56. In addition, the frame support member 58 is coupled to one side of the frame member 56, and the frame support member 58 is firmly coupled to the frame member 56 between the frame member 56 and the frame support member 58. The rib 56a is coupled to each other, and the mold 52 is coupled to the frame member 56 with the molding surface 54 and the rear surface of the molding surface 54 open.

In addition, the coupling protrusion 60 is coupled to one side of the frame supporting member 58 in the opposite direction to the frame member 56, and the coupling protrusion 60 is gripped by the robot arm 400 to mold heating unit 100. ), The powder slush 200, and may be transferred to the mold cooling unit (300).

Looking at the mold heating unit 100 in detail with reference to Figures 2 and 3 as follows.

The mold heating unit 100 includes a chamber 110 in which the mold unit 50 is seated and heated, and a hot air generating circulation device 150 supplying hot air to the chamber 110.

The chamber 110 is formed in a hexahedron shape with an empty inside so that the mold part 50 can be seated, and an upper surface thereof is formed with an open face 112 so that the mold part 50 can be carried therein.

At this time, the open surface 112 is coupled to the opening and closing cover 116 to reduce the energy loss of the hot air supplied into the chamber 110. The cover 116 is separated from the chamber 110 to be separated and coupled when the mold unit 50 is carried in to open and close the open surface 112, and is slidably coupled to the upper surface of the chamber 110 to use a motor. It may be transferred from the upper surface of the chamber 110 to open and close the open surface (112).

At this time, one side of the chamber 110 is formed with a cutting groove 114 in communication with the upper open surface 112.

The cutting groove 114 is formed so that the coupling protrusion 60 of the mold unit 50 seated in the chamber 110 can be coupled to the robot arm 400, as shown in FIG. 2, the mold unit 50. ) Is seated in the chamber 110 with the molding surface 54 of the mold facing in one side direction, and the coupling protrusion 60 is located on an extension line in the chamber 110 of the incision groove 114. To be gripped by arm 400.

In addition, a hot air supply hole 120 for supplying hot air is formed in the chamber 110, and a heat recovery hole 126 for recovering heat supplied in the form of hot air to the chamber 110 on the bottom surface of the chamber 110. Is formed.

Looking at the hot air supply port 120 in more detail as follows.

Hot air supply port 120 is in communication with the main air blower 154 of the hot air generating circulation device 150 to be described later is formed in a duct structure to inject the hot air into the chamber 110, each side in the interior of the chamber 110 Is formed.

At this time, the main hot air supply port 122 for supplying hot air toward the center of the chamber 110 in the side surface adjacent to the side in which the cut groove 114 is formed, the side of the side in which the cut groove 114 is formed ) Is formed.

The main hot air supply port 122 functions to blow out hot air for heating the molding surface 54 and the rear surface of the molding surface 54 of the mold. At this time, the main hot air supply port 122 has a different height to heat the upper and lower parts in the left and right sides of the mold, that is, the chamber 110, the first hot wind supply port (122a) and the second hot wind supply port And 122b.

In addition, an auxiliary hot air supply hole 124 is formed at a side surface in the orthogonal direction of the main hot air supply hole 122 to uniformly heat the mold 52 seated inside the chamber 110.

The number of the hot air supply holes 120 may vary depending on the size of the chamber 110 in which the mold 52 is seated and the shape of the mold 52.

At this time, the main hot air supply port 122 may be provided with an adjustment strip 128 through the hinge axis. The control strip 128 is to adjust the direction in which hot air is injected as it is rotated in the vertical direction to adjust the direction of the hot air by adjusting the direction of the control strip 128 according to the size and shape of the mold 52. More efficient heating.

In addition, referring to FIG. 4, the hot air generating circulation device 150 is as follows.

The hot air generating circulation device 150 is connected to a hot air generator (not shown) for generating hot air, a hot air circulation fan 152 for circulating hot air generated from the hot air generator, and a hot air circulation fan 152 to supply hot air. The auxiliary blower pipe 154 communicates with the main blower pipe 154 and consists of a branch pipe 156 that communicates with the main hot air supply hole 122 and the auxiliary hot air supply hole 124, and communicates with the heat recovery hole 126. 158 and a blowing fan 160 for transferring the recovered heat to the main blowing pipe 154.

The hot air generator generates high temperature hot air using various energy sources such as electricity or gas, and the generated hot air is transferred to the main blower pipe 154 by the hot air circulation fan 152.

The hot air transferred to the main air blower 154 is injected into the chamber 110 through the main hot air feeder 122 and the auxiliary hot air feeder 124 through the branch pipe 156.

In addition, air whose temperature has fallen through the heat recovery holes 126 formed on the bottom surface of the chamber 110 flows into the auxiliary blower pipe 158, and the air is transferred back to the main blower pipe 154 through the blower fan 160. do.

At this time, between the main blowing pipe 154 and the blowing fan 160 may be coupled to the vortex generating pipe that the wings are continuously formed on the inner peripheral surface. The vortex generating tube changes the air conveyed by the blower fan 160 in the form of a vortex, and changes the recovered hot air conveyed by the blower fan 160 in the form of a vortex and supplies it to the main blower pipe 154. By mixing evenly with the hot air supplied from the hot air circulation fan 152, such air is again transferred to the hot air supply port 120 through the branch pipe (156).

Looking at the robot arm 400 with reference to Figure 5 as follows.

The robot arm 400 has at least six axes of articulated joints and a finger device 410 is formed at an end portion thereof to hold the coupling protrusion 60 coupled to the mold part 50. The robot arm 400 is formed to be axially coupled with respect to the ground so as to be able to rotate 360 °, it is possible to quickly transfer the mold 52 from each device using the robot arm 400.

The operation of the powder slush molding apparatus 1 configured as described above will be described with reference to FIGS. 1 to 5.

The mold part 50 in which the coupling protrusion 60 is gripped by the finger device 410 at the end of the robot arm 400 is transferred to the mold heating part 100 by the robot arm 400, and as shown in FIG. 2. As shown in FIG. 2 (not shown in FIG. 2), the robot arm is seated inside the chamber 110 through the open surface 112 of the chamber 110 of the mold heating unit 100. At this time, the coupling protrusion 60 of the mold part 50 faces the incision groove 114 and is seated inside the chamber 110 so that one side of the frame member 56 contacts the bottom surface of the chamber 110. . Accordingly, the molding surface 54 and the rear surface of the molding surface 54 of the mold are seated to face the main hot air supply port 122.

When the mold part 50 is seated inside the chamber 110, the opening part is closed by the cover 116 as shown in FIG. 3, and the hot air generator, the hot air circulation fan 152, and the blower fan 160 operate. To supply hot air into the chamber 110.

As the hot air is supplied, the temperature inside the chamber 110 and the temperature of the mold 52 increase, and when the temperature reaches a temperature at which the resin powder can be fused, the finger device 410 of the robot arm 400 moves to the mold part ( The coupling protrusion 60 of 50 is gripped and transferred to the powder slush 200 of FIG. 1 to apply the resin powder to the molding surface 54.
When heated in the mold heating part 100, the mold part 50 is in a lateral direction as shown in Figs. 2 and 3, but the robot arm is used to apply the resin powder in the powder slush part 200. By the operation of the 400, the mold unit 50 is rotated about 90 degrees to the downward operation, the operation in the powder slush unit 200 is the same as that of the conventional, so the description is omitted. When the work on the powder slush unit 200 is finished, the robot arm 400 transfers the mold unit 50 to the mold cooling unit 300, and the work on the mold cooling unit 300 is similarly performed. .

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Figure 1 is an exemplary view showing the overall process applied powder slush molding apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating a chamber of a mold part and a mold heating part used in the powder slush molding apparatus shown in FIG. 1. FIG.

3 is a cross-sectional view taken along line III-III of the mold heating unit shown in FIG. 1.

4 is a cross-sectional view taken along line IV-IV of the mold heating unit illustrated in FIG. 1.

5 is an exemplary view showing a state in which the mold portion of the powder slush molding apparatus shown in FIG. 1 is transferred by the robot arm from the mold heating portion.

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

One ; Powder slush molding apparatus 50; Mold part

52; Mold 54; Forming surface

56; Frame member 56a; live

58; Frame support member 60; Engaging protrusion

100; Mold heating unit 110; chamber

112; Open side 114; Incision

116; Cover 120; Hot air supply port

122; Main hot air supply port 122a; First Hot Air Supply Hole

122b; A second hot air supply port 124; Auxiliary Hot Air Supply Hole

126; Heat recovery port 128; Adjustable strip

150; Hot air generator 152; Hot air circulation fan

154; Main blower 156; Branch pipe

158; Auxiliary air blower 160; Blower fan

200; Powder slush unit 300; Mold Cooling Part

400; Robot arm 410; Finger device

Claims (6)

A powder slush molding apparatus comprising a mold heating part, a powder slush part, a mold cooling part, and a robot arm, the mold arm being transferred to the mold heating part, the powder slush part, and the mold cooling part by the robot arm, The mold part is coupled to the edge of the mold and comprises a frame member for opening the molding surface and the rear surface of the molding surface, and a coupling protrusion coupled to one side of the frame member and gripped by the robot arm, The mold heating part has an open surface formed at an upper portion so that the mold portion can be carried in, and a cutting groove communicating with the open surface is formed at one side so that the engaging protrusion of the mold portion seated therein can be gripped by the robot arm. A powder slush molding apparatus, comprising a chamber and a hot air supply port installed inside the chamber to supply hot air to heat the molding surface of the mold and the rear surface of the molding surface. The method of claim 1, Powder slush molding apparatus, characterized in that the bottom surface of the chamber further comprises a heat recovery port for recovering the waste heat from heating the mold. The method according to claim 1 or 2, The mold part is seated in the chamber so that one side faces the bottom surface of the chamber, The hot air supply port is installed on both sides of the inside of the chamber to heat the molding surface of the mold and the rear surface of the molding surface, and the inside of the chamber is installed in a direction perpendicular to the main hot air supply port to the mold Powder slush molding apparatus comprising a secondary hot air supply for heating. The method of claim 3, wherein The main hot air supply port is a powder slush molding apparatus comprising a first hot air supply port and a second hot air supply port for heating the upper and lower portions of the molding surface seated in the chamber. The method of claim 4, wherein Powder slush molding apparatus further comprises a control stream rotatably coupled to the main hot air supply port for adjusting the direction of the hot air flowing from the hot air supply port. The method according to claim 1 or 2, The robot arm is provided with a multi-joint and comprises a finger device that can hold the coupling protrusion, Powder mold slush molding apparatus, characterized in that the mold heating unit, the powder slush unit, the mold cooling unit is installed continuously around the robot arm.

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