KR101992489B1 - Computerized numerical control machine tool apparatus - Google Patents

Abstract

The present invention relates to a CNC machine tool device which enables a precise processing, comprising: a first clamping jig having a workpiece supported on an upper portion surface thereof; and a lower table which can be moved forwards and backwards along a longitudinal direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a CNC machine tool,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CNC machine tool, and more particularly, to a CNC machine tool capable of automatically transferring a workpiece, stably supporting a workpiece using a clamping jig, will be.

In general, a computer numerically controlled machine tool such as a CNC (Machine Numerical Control) machine automatically determines the position of a tool by machining conditions such as a machining number and a shape input to a computer, a tool feed speed, and the like, Is a machine that automatically processes workpieces while moving. It is advantageous in factory automation and mass production of workpieces and is widely used in various fields.

On the other hand, the cutting oil jetting device of the CNC lathe cools the heat generated when the workpiece fixed to the chucking device is machined into a drill, a bite, an end mill or the like, and smoothly discharges the metal chips generated in machining the workpiece The workpiece and the tool are sprayed with cutting oil. Generally, a coolant is referred to as a coolant, and the coolant refers to the liquid oil used for cutting and cutting metal, which reduces friction and resistance, thereby cooling the heat, increasing the working accuracy, and protecting the tool .

However, since the conventional coolant supply device is not equipped with a device for controlling the temperature of the coolant, a certain amount of coolant is continuously circulated during operation of cutting tools such as drill, tap, and boring by the machine tool, So that the components inside the machine tool are deformed, making it difficult to precisely process the workpiece.

On the other hand, the background art described above is technical information acquired by the inventor for the derivation of the present invention or obtained in the derivation process of the present invention, and can not necessarily be a known technology disclosed to the general public before the application of the present invention .

Korea Patent No. 10-0649152

An aspect of the present invention is to provide a CNC machine tool capable of automatically transferring a workpiece, stably supporting the workpiece using a clamping jig, and spraying a cutting oil to the machining area, thereby enabling precise machining.

Also, it is intended to provide a CNC machine tool apparatus which prevents a component in a machine tool from being deformed by including a configuration capable of controlling the temperature of the cutting oil.

The present invention also provides a CNC machine tool device including an elastic part to improve work stability and prevent damage to the apparatus.

In addition, it is possible to prevent the apparatus from being damaged from foreign substances generated by the contaminated material or the workpiece through the sheets and the adhesive composition contained in the protective portion.

The technical problem of the present invention is not limited to the technical problems mentioned above, and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

A CNC machine tool according to an embodiment of the present invention includes a lower table capable of moving back and forth along a length direction, including a first clamping jig for supporting a workpiece on an upper surface thereof.

In one embodiment, an internal space including the lower table is formed, and a main body for guiding movement of the lower table; An upper table detachably attached to an upper surface of the lower table and including a second clamping jig for supporting a workpiece;

A processing unit installed on an upper portion of the main body to process a workpiece supported by any one of the lower table and the upper table; An elastic part formed in at least one area inside the body part and absorbing vibrations or shocks through an elastic force when the lower table moves; And a radiating portion formed in at least one region of the machining portion and discharging a cutting oil to a machining region of the machining portion, wherein the lower table portion includes a plurality of vertical frames supporting the first clamping jig; A lower frame formed on a lower surface of the vertical frame to support the vertical frame; A guide groove formed between the vertical frames for guiding the discharge of the cutting oil; And a protector formed on an outer circumferential surface of one of the vertical frame and the lower frame to protect the vertical frame and the lower frame, wherein the protector is formed on an outer peripheral surface of the vertical frame and the lower frame, A first sheet layer including an elastic waterproof material; A plurality of waterproof sheets of metal disposed on the first sheet layer; A soft magnetic joint layer adhered to at least one of an upper end of the joint and a lower end of the joint between the waterproof sheets; And a second sheet layer formed on the waterproof sheet, the second sheet layer being made of an inorganic elastic waterproof material; And a coating layer formed on the second sheet layer to protect the second sheet layer from an external stimulus; And an adhesive composition applied to at least one region of the waterproof sheet and fixedly bonding the waterproof sheet, wherein the adhesive composition comprises 40 to 80 parts by weight of a thermoplastic resin, And 1 to 10 parts by weight of a plasticizer, 1 to 10 parts by weight of a filler, 0.1 to 1 part by weight of an antioxidant and 0.1 to 5 parts by weight of nano silica, Wherein the support frame supports the lower table using an elastic force when the lower table moves; Four support plates supporting the support frame placed on the upper side and slidably moving in the left-right direction or the up-down direction by elastic force in response to vibration or impact transmitted from the support frame to attenuate vibration or impact; Two frames of a first frame and a second frame are rotatably connected to a lower portion of each of the four receiving plates to support the receiving plate and adjust the length of the first frame or the second frame, A support frame for determining a support position of the support frame by the support plate; And a lower portion of the first frame is connected to the upper side so as to be capable of pivoting and sliding in the horizontal direction, and the lower portion of the second frame is connected to one side so as to be rotatable and vertically slidable, Or a support column for absorbing vibrations or shocks through the elastic force of the cross-elastic portion or the vertical elastic portion when the second frame is slidingly moved, wherein the radial portion is formed inside the radial portion, 1 guide tube; A second guide pipe formed inside the radiating part and guiding the movement of water; And a spray nozzle connected to the first guide pipe and the second guide pipe and configured to discharge any one of the cutting oil and the water, and the main body part collects the coolant discharged into the inside and supplies the coolant to the radiator And a storage unit, wherein the storage unit comprises: a storage module in which the coolant is stored; A supply pipe for supplying the coolant collected from the lower table to the storage module; A discharge pipe connected to the supply pipe and allowing the coolant flowing into the supply pipe to be discharged to the storage module; a filter connected to each of the discharge pipes to filter the foreign substances contained in the coolant; At least one temperature control tube formed inside the storage module, the outer circumferential surface contacting with the cutting oil being formed with corrugation and having cooling water flowing therein to adjust the temperature of the cutting oil; And a connection pipe connected to the first guide pipe and supplying the coolant to the radiator.

According to one aspect of the present invention, there is an effect that the workpiece is automatically transferred, the workpiece is stably supported using the clamping jig, and the cutting oil is sprayed to the machining area.

Further, by including a configuration capable of adjusting the temperature of the cutting oil, it is possible to prevent the components in the machine tool from being deformed.

Further, it includes the elastic part, the sheet included in the protective part, and the adhesive composition, thereby improving the stability of the operation and preventing damage to the device.

The effects of the present invention are not limited to the above-mentioned effects, and various effects can be included within the range that is obvious to a person skilled in the art from the following description.

1 is a perspective view of a CNC machine tool according to an embodiment of the present invention.
2 is a cross-sectional view of a CNC machine tool according to an embodiment of the present invention.
3 and 4 illustrate operation of a CNC machine tool according to an embodiment of the present invention.
Figure 5 shows a radiator according to one embodiment of the invention.
7 is a view showing an elastic part according to an embodiment of the present invention.
Figs. 8 and 9 are views showing the support pillars of Fig.
10 is a view showing the cross-elastic portion of FIG.
11 is a view showing the vertical elastic part of FIG.
12 shows a protection unit according to an embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a perspective view of a CNC machine tool according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a CNC machine tool according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a CNC machine tool 10 according to an embodiment of the present invention includes a lower table 100, a main body 200, an upper table 300, a machining portion 400, And a radiation unit 600. [0033]

The lower table 100 includes a first clamping jig 110 for supporting a workpiece on its upper surface, and is movable back and forth along the longitudinal direction. The first clamping jig 110 can fixedly support not only the workpiece but also the upper table 300. In addition, the lower table 100 can be moved back and forth along the longitudinal direction of the lower table 100 according to the progress of the work.

The main body 200 is formed with an inner space including the lower table, and guides the movement of the lower table. The main body 200 stably holds the lower table 100 and collects and processes the coolant discharged from the radial portion 600.

The upper table 300 is detachably attached to the upper surface of the lower table 100 and includes a second clamping jig 310 for supporting the work. The upper table 300 can be fixed in position by the first clamping jig 110 included in the lower table 100.

The machining unit 400 is installed on the upper portion of the main body, and processes a workpiece supported by any one of the lower table and the upper table. The machining portion 400 can be formed by a conventional cutting device, a pressurizing device, or the like, and can process the workpiece through up-and-down or left-right movements.

The elastic part 500 is formed in at least one area inside the main body 200 and absorbs vibration or shock generated by the movement of the lower table 100 through the elastic force when the lower table 100 moves . As shown in FIG. 2, the elastic part 500 may be formed to abut the front surface of the lower table 100, thereby reducing a shock due to the movement of the lower table 100. According to the embodiment, the elastic part 500 may be additionally formed so as to match the rear surface of the lower table 100.

The radiating part 600 is formed in at least one area of the machining part 400 and discharges the cutting oil to the machining area of the machining part 400. A plurality of radiating parts 600 may be formed, and the cutting oil may be discharged to the machining area as well as the area where the cutting oil is required to be discharged through the angle adjustment. Accordingly, it is possible to more precisely perform the machining of the machining portion 400, and to remove foreign matter generated by the machining of the workpiece.

3 and 4 illustrate operation of a CNC machine tool according to an embodiment of the present invention.

3 and 4, the CNC machine tool 10 according to an embodiment of the present invention includes a plurality of radiation parts 600 for cutting the workpiece in a work area of the machining part 400 It can be sprayed. At this time, the discharged cutting oil is moved to the lower table 100. The lower table 100 includes a vertical frame 120, a lower frame 130, a guide groove 140, and a protector (not shown) 150).

Specifically, the vertical frame 120 supports the first clamping jig 110, and a plurality of the vertical clamping jigs 110 may be formed at predetermined intervals. According to an embodiment, the first clamping jig 110 may be inserted and fixed at the predetermined gap. The lower frame 130 may be formed on a lower surface of the vertical frame 120 to support the vertical frame 120. The guide grooves 140 are formed between the vertical frames 120 to guide the discharge of the coolant. The protection unit 150 is formed on the outer circumferential surface of one of the vertical frame 120 and the lower frame 130 and protects the vertical frame 120 and the lower frame 130. That is, the protection unit 150 can prevent the vertical frame 120 and the lower frame 130 from being corroded or scratched by the cutting oil or foreign matter contained in the water.

The body part 200 may include a storage part 210 for processing the discharged cutting oil in at least one area inside. Through the storage unit 210, the discharged cutting oil is processed and reused, thereby improving the efficiency of the operation of the apparatus.

Figure 5 shows a radiator according to one embodiment of the invention.

5, the radiation unit 600 may include a first guide tube 610, a second guide tube 620, and a spray nozzle 630. The first guide tube 610, the second guide tube 620,

The first guide pipe 610 is formed inside the radiation part 600 to guide the movement of the coolant. The first guide pipe 610 is connected to the storage unit 210 to be described later and can receive the coolant.

The second guide tube 620 is also formed inside the radiation part 600 to guide the movement of the water. The second guide pipe 620 is configured to provide water for cleaning the lower table 100 and the upper table 300. The second guide pipe 620 is provided with water The first guide pipe 610 can be closed. Further, according to the embodiment, air or the like may be provided instead of water through the second guide pipe 620.

The injection nozzle 630 is connected to the first guide pipe 610 and the second guide pipe 620 to discharge any one of the cutting oil and the water. That is, the user adjusts the injection nozzle 630 to open only the first guide pipe 610 to discharge only the cutting oil, or to move the first guide pipe 610 and the second guide pipe 620, Can be opened at the same time and mixed with cutting oil and water to be released to the machining area. In cleaning the CNC machine tool 10, only the second guide tube 620 is opened to clean the structure of the CNC machine tool 10 with water.

6 shows a storage unit according to an embodiment of the present invention.

6, the storage unit 210 according to an exemplary embodiment of the present invention is formed in the main body 200 and includes a storage module 211, a supply pipe 212, a discharge pipe 213, A temperature control tube 215, and a connection tube (not shown).

The storage module 211 stores the coolant emitted from the radiation unit 600 according to the operation of the processing unit 400. In other words, the coolant that has been radiated and has passed through the lower table 100 is stored. The supply pipe 212 supplies the collected coolant from the lower table 100 into the storage module 211. The discharge pipe 213 is connected to the supply pipe 212 so that the coolant flowing into the supply pipe 212 is discharged to the storage module 211. The filtering unit 214 is connected to each of the discharge pipes 213 to filter the foreign substances contained in the cutting oil. That is, the cutting oil radiated to the working region of the machining unit 400 may include foreign matter such as iron powder and dust generated due to the machining of the work, and the filtering unit 214 serves to filter the foreign matter such as dust. As shown in FIG. 6, the filtering section 214 may be formed in a configuration in which the filtering holes 2141 are formed so that foreign substances having a predetermined size or larger can not pass through. Also, the filtering portion may be formed to have a magnetic property so as to filter the metal material.

The temperature control tube 215 may be formed in the storage module 211 and may have a wrinkle formed on an outer circumferential surface thereof in contact with the cutting oil to widen the contact area with the cutting oil. In addition, the cooling water may flow into the temperature control tube 215 to control the temperature of the cutting oil. A plurality of such temperature control tubes 215 may be formed. At this time, the cooling water is accommodated in the plurality of temperature control tubes 215, and 35 to 55 parts by weight of the amethyst, 5 to 10 parts by weight of the male ceramics and 35 to 55 parts by weight of the guinea pigs are added to 1000 parts by weight of the alkaline ionized water and 1000 parts by weight of the alkaline ionized water. To 55 parts by weight. 20 to 35 parts by weight of tourmaline powder, 4 to 8 parts by weight of silicate, 4 to 8 parts by weight of calcium and 4 to 8 parts by weight of tungsten, based on 1000 parts by weight of ionic alkaline water, And 1 to 10 parts by weight of a defoaming agent and 1 to 10 parts by weight of a surfactant based on 1000 parts by weight of ionic alkaline water. Subsequently, the ratio of amethyst, nephew and talc stones can be manufactured to 45 parts by weight of amethyst, 7.5 parts by weight of the tailworm, and 45 parts by weight of the goat stone, based on 1000 parts by weight of the ionic alkaline water.

The connection pipe (not shown) is connected to the first guide pipe 610 so that the foreign material can be removed by the radiation part 600 and the temperature-controlled cutting oil can be supplied.

7 is a view showing an elastic part according to an embodiment of the present invention.

7, the elastic portion 500 includes a support frame 540, four support plates 510, four pairs of support frames 520, and a support post 530. As shown in FIG.

The support frame 540 is supported by a support plate 510 installed on the lower side and supports the lower table 100 by using an elastic force when the lower table 100 moves.

The support plate 510 supports the support frame 540 that is seated on the upper side and is supported by the support columns 530 by the support frame 520 connected to the lower side.

In other words, the support plate 510 seats the support frame 540 on the upper side, and the support plate 540 supports the left and right direction (i.e., the first frame 521a) by the elastic force corresponding to vibration, Or the support frame 520 which is slidably moved in the vertical direction (i.e., the second frame 521b).

In addition, since the lengths of the first frame 521a or the second frame 521b are variously formed, the present invention overcomes the limitations of existing elastic bodies that can reduce the impact by simply adjusting the height in the vertical direction, The supporting position by the plate 510 can be freely adjusted not only in the vertical direction but also in the left and right direction.

The support frame 520 is connected to two frames of the first frame 521a and the second frame 521b so as to be rotatable at the bottom of each of the four support plates 510 to support the plate 510 , The length of the first frame 521a or the second frame 521b is adjusted as described above to determine the support position of the support frame 540 by the plate 510. [

The upper portion of the first frame 521a and the upper portion of the second frame 521b are connected to the lower portion of the receiving plate 510 and the lower portion of the first frame 521a is rotated and rotated on the upper surface of the supporting column 530. [ And the lower portion of the second frame 521b is connected to one side of the support pillar 530 so as to be rotatable and vertically slidable.

That is, the first frame 521a or the second frame 521b can receive vibration or shock transmitted from the support plate 510 through the rotation or sliding movement by the elastic force on the upper side or one side of the support column 530 To support pillars 530.

The lower part of the second frame 521b is connected to the upper surface of the first frame 521a so as to be rotatable and horizontally slidable, And the elastic force (that is, the cross elastic portion 533 or the vertical elastic portion 535) when the first frame 521a or the second frame 521b is slidingly moved is provided so as to be rotatable and vertically slidable Thereby absorbing vibration or shock.

Each supporting plate 510 or the supporting frame 520 is symmetrical with respect to each other and driven by the same method. The description of the supporting plate 510 or the supporting frame 520 as described above The same can be applied to the other support plate 510 or the other support frame 520, and a description thereof will be omitted.

The elastic part 500 having the above-described structure can also be formed in a vertically symmetrical structure. The structure related to the four supporting plates 510 and the four pairs of supporting frames 520 is a supporting pillar 530 in the same manner.

Figs. 8 and 9 are views showing the support pillars of Fig.

8 and 9, the support column 530 includes a column body 531, a cross groove 532, a cross elastic portion 533, four vertical grooves 534, and four vertical elastic portions 535 ).

The column body 531 is formed in a rectangular column shape, and a cross groove 532 is formed in an upper portion and a vertical groove 534 is formed in each side face.

The cross groove 532 is formed in the upper portion of the column body 531 in a "+" shape, and the cross-elastic portion 533 is inserted into the inner space.

The cross elastic portion 533 is formed in a shape corresponding to the shape of the cross groove 532 and is inserted into the cross groove 532 so that the lower side of the first frame 521a can be rotated And the vibration or shock transmitted from the first frame 521a is absorbed by elastic force to attenuate vibrations or shocks.

The vertical grooves 534 are vertically formed on the respective surfaces of the column body 531, and the vertical elastic portions 535 are inserted into the inner spaces.

The vertical elastic part 535 is formed in a shape corresponding to the shape of the vertical groove 534 and is inserted into the vertical groove 534 and the lower part of the second frame 521b is rotatably connected to the outside of the upper part, To absorb vibration or shock transmitted from the second frame 521b to attenuate vibrations or shocks.

10 is a view showing the cross-elastic portion of FIG.

10, the cross-elastic portion 533 includes a cross case portion 5331, an upper support portion 5332, four upper elastic portions 5333, four upper elastic support portions 5334, 5335 < / RTI >

The cross housing portion 5331 is formed in a hollow shape and is inserted into the cross groove 532 and has an upper support portion 5332, four upper elastic portions 5333, Upper elastic supporting portions 5334 are provided.

At this time, the length of each branch of the cross case 5331 is shorter than the length of each branch of the cross groove 532, so that the upper connection link 5335 is formed in the space formed outside the cross case 5331 And be able to shape the space for the sliding movement.

The upper support portion 5332 is formed as a cube and is disposed at the center portion of the cross case portion 5331 and supports the upper elastic portion 5333 so that the upper elastic portion 5333 is disposed outside the four surfaces, do.

The upper elastic part 5333 is disposed on each side of the upper supporting part 5332 and supports the upper elastic supporting part 5334 by elastic force to absorb vibration or impact transmitted from the upper elastic supporting part 5334. [

The upper elastic supporting portions 5334 are respectively disposed at the ends of the respective branches of the inner space of the cross case portion 5331 and are supported by the elastic force of the upper elastic portion 5333 and are disposed between the upper connecting link portions 5335 And supports the upper connecting link portion 5335 by the supporting bar 5336.

The upper connecting link portions 5335 are disposed at the ends of the respective branches of the cross groove 532 and are provided with supporting bars 5336 provided between one side surface facing the cross case portion 5331 and the upper elastic supporting portion 5334 And the lower part of the first frame 521a is rotatably connected to the lower part of the upper frame 521. The lower end of the first frame 521a is connected to the upper end of the first frame 521a, And moves along the groove of the cross groove 532 in the center direction.

11 is a view showing the vertical elastic part of FIG.

11, the vertical elastic portion 535 includes a vertical case portion 5341, a side support portion 5342, a side elastic portion 5343, a side elastic support portion 5344, and a side connection link portion 5345 do.

The vertical case portion 5341 is formed in a shape corresponding to the shape of the empty vertical groove 534 and has a side supporting portion 5342, a side elastic portion 5343 and a side elastic supporting portion 5344 ) Are installed in order.

The side support portion 5342 is formed as a cube and disposed in the lower space of the vertical case portion 5341 and the side elastic portion 5343 is disposed on the upper side to support the side elastic portion 5343.

The side elastic part 5343 is disposed on the upper side of the side supporting part 5342 and supports the side elastic supporting part 5344 disposed on the upper side by an elastic force so that the vibration or shock transmitted from the side elastic supporting part 5344 Absorbed.

The side elastic support portion 5344 is disposed on the upper side of the inner space of the vertical case portion 5341 and is supported by the elastic force of the side elastic portion 5343 and is supported by the support bars 5346 Thereby supporting the side connecting link portion 5345.

The side connection link portion 5345 is disposed at the upper end of the vertical groove 534 and has a support bar 5346 installed between the lower side opposed to the vertical case portion 5341 and the upper side surface of the side elastic support portion 5344 And the second frame 521b is rotatably connected to the outer side of the second frame 521b so as to be slidable along the groove of the vertical groove 534 in the lower direction of the vertical groove 534 .

12 shows a protection unit according to an embodiment of the present invention.

The protection unit 150 according to an embodiment of the present invention includes a first sheet layer 151, a waterproof sheet 152, a magnetic joint layer 153, a second sheet layer 154, a coating layer 155, (156) and a tackifier composition (not shown).

The first sheet layer 151 may be made of an inorganic elastic waterproof material, thereby improving weather resistance, corrosion resistance, durability, etc. of the waterproof sheet 152. The inorganic elastic waterproofing material is composed of a special copolymerized emulsion and a cement-based special combination aggregate as a main component. For example, an emulsion of STYRENE-BUTYL ACRYLATE COPOLYMER and a cement powder (for example, Lent cement, alumina, silica sand, defoamer, water reducing agent, etc.) or by adding water thereto.

The waterproof sheet 152 is disposed on the first sheet layer 151 and can function as a secondary waterproof layer. The waterproof sheet 152 is made of a metal such as iron, aluminum, stainless steel, or chrome, and is formed of a thin plate panel, and protects the first sheet layer 151 on the lower side and can cope with an external shock. Particularly, the waterproof sheet 152 is composed of a plurality of waterproof sheets 152, and can be disposed on the first sheet layer 151 continuously. At this time, the magnetic joint layer 153 is disposed at the joint between the waterproof sheets 152 to correspond to the stress behavior of the waterproof sheet 152 and to maintain airtightness.

The magnetic joint layer 153 may be made of a soft material, such as a rubber magnet, and may be attached to the seam between the waterproof sheets 152 to seal the seam. Here, the joint between the waterproof sheets 152 is a surface to which the continuous waterproof sheet 152 touches, and includes a space that is spaced within a predetermined distance. The magnetic joint layer 153 may be attached to the lower end of the seam between the waterproof sheets 152 and the upper end of the seam, respectively, for sealing the seam. Further, the magnetic joint layer 153 is magnetic and can be stably and easily attached to the waterproof sheet 152 made of a metal.

The second sheet layer 54 may be made of the same inorganic elastic waterproofing material as the first sheet layer 151. In particular, the second sheet layer 154 may be made of a metal or the like It is possible to prevent the waterproof sheet 152 from being corroded by moisture inside.

The coating layer 155 is formed on the second sheet layer 154 to protect the second sheet layer 154 from external stimuli.

The buffer portion 156 is disposed between the plurality of waterproof sheets 152, and may be made of a soft material such as rubber. The waterproof sheet 152 is disposed between the waterproof sheet 152 and the waterproof sheet 152 so that the behavior of the waterproof sheet 152 in the horizontal direction can be absorbed and the structure of the protector 150 can be more firmly maintained. Particularly, even if the soft buffer portion 156 contracts / expands by the waterproof sheet 152, the airtightness can be continuously maintained by the magnetic joint layer 153 fluidly attached at the upper and lower ends of the buffer portion 156 .

 The adhesive composition (not shown) is applied to at least one region of the structure of the protector 150 to form a first sheet layer 151, a waterproof sheet 152, a magnetic joint layer 153, a second sheet layer 154, The stabilizer 155 and the buffer 156 can be stably fixedly coupled. The adhesive composition according to an embodiment of the present invention comprises 40 to 80 parts by weight of a thermoplastic resin, 5 to 40 parts by weight of a tackifier resin, 1 to 5 parts by weight of a pine resin, 1 to 10 parts by weight of a plasticizer, 1 to 10 parts by weight of a filler, 0.1 to 1 part by weight of an antioxidant. The present invention relates to a hot-melt adhesive composition, which is generally manufactured in a state of being adhered between a releasing agent and a silicone band, removes a releasing agent when applied to a fabric, and performs a pressing operation so as to adhere a silicone band to the fabric. Hereinafter, each component will be described in detail.

The thermoplastic resin is a main component of the composition and has a function of controlling the adhesive force and the cohesive force. Vinyl acetate, polyvinyl alcohol, ethylene-acrylic acid copolymer and ethylene-methacrylic acid copolymer, polyurethane, and the like, as long as it contains a vinyl group or a hydroxyl group. Or a combination thereof.

The content of the thermoplastic resin is preferably 40 to 80 parts by weight based on the total composition. When the content is less than 40 parts by weight, the melt viscosity is increased and the melt flow index is lowered, and the workability is very poor. When the content is more than 80 parts by weight, it is difficult to exhibit sufficient adhesive force to be immediately applied to the fabric.

The tackifier resin is a low-molecular-weight resin, which improves workability by lowering the melt viscosity, improves the initial wettability of the adhesive and the adhesive force of the adhesive on the surface of the adherend, and makes it possible to control the solidification time.

The type of the tackifier resin is not particularly limited, but it is preferably a petroleum resin. More specifically, the tackifier resin may be composed of at least one selected from the group consisting of an aliphatic hydrocarbon resin, an alicyclic hydrocarbon resin, an aromatic hydrocarbon resin, an aromatic modified aliphatic hydrocarbon resin, and a hydrogenated hydrocarbon resin.

The aliphatic hydrocarbon resin is a commercial product such as Hikorez A-1100, Hikorez A-1100S, Hikorez C-1100, Hikorez R-1100, and Hikorez R-1100S of Kolon Oil & Examples of the alicyclic hydrocarbon resin include a hydrocarbon resin containing dicyclopentadiene (DCPD) as a monomer. The aromatic hydrocarbon resin is commercially available as Hikotack P-110S, Hikotack P-120, Hikotack P-120HS, There are Hikotack P-120S, Hikotack P-140, Hikotack P-140M, Hikotack P-150, Hikotack P-160, Hikotack P-90, Hikotack P-90S, Hirenol PL-1000 and Hirenol PL-400. The aromatic-modified aliphatic hydrocarbon resin is commercially available from Hikorez T-1080, Hikorez T-1100 and the like manufactured by Kolon Oil & Hydrogenated hydrocarbon resins can be further classified into hydrogensified aliphatic hydrocarbon resins, hydrogenated aromatic hydrocarbon resins and the like, commercially available from Sukorez D-300, Sukorez D-390, Sukorez SU-100, Sukorez SU-110, Sukorez SU-120, Sukorez SU-130, and Sukorez SU-90.

The tackifier resin is preferably a hydrocarbon resin having 4 to 10 carbon atoms in the monomer. Specifically, a C5 aliphatic resin, a C9 aromatic resin, a C5 / C9 aliphatic / aromatic copolymer resin and the like can be used.

Further, the tackifier resin of the present invention is more preferably a hydrocarbonated hydrocarbon resin containing dicyclopentadiene as a monomer, commercially available from Sukorez D-300, Sukorez D-390, Sukorez SU-100, Sukorez SU-110, Sukorez SU-120, Sukorez SU-130, and Sukorez SU-90.

On the other hand, it is preferable that the adhesive composition of the present invention is used by mixing the various petroleum resins described above together with the biodegradable low-polydispersity resin.

The biodegradable low irritant resin may be prepared by melt-mixing a monomer of a polymer to a biodegradable polymer, and polylactic acid is preferably used as the biodegradable polymer.

The polylactic acid is a polyester which is synthesized by ring-opening polymerization of lactide which is a condensation degree of lactic acid, has a physical property somewhat intermediate between polyamide and polyethylene terephthalate, and mainly comprises a natural vegetable sugar component obtained from potato and corn Although the biodegradability is high, it is generally high in hardness, low in elasticity, and low in durability.

In the biodegradable polymer, the same polymer monomer is melted and mixed. At this time, the biodegradable polymer is partially bonded to the monomer, resulting in partial chain cleavage, resulting in a lower number-average molecular weight as a whole. As the number average molecular weight decreases, it exhibits properties that can be used as a pressure-sensitive adhesive, and the workability is improved.

20 to 30 parts by weight of the lactic acid monomer may be mixed with 100 parts by weight of the polylactic acid. When the monomer is mixed in an amount of less than 20 parts by weight, the number average molecular weight is high and it is hard to use as a pressure sensitive adhesive. If the monomer is used in an amount exceeding 40 parts by weight, migration may occur on the surface.

The blending ratio of the petroleum resin and the biodegradable low irritant resin is preferably 1 to 2: 1 (w / w). When the blending ratio of the petroleum resin is too high, a biodegradable low irritation effect is hardly obtained. If the blend ratio is too high, economical efficiency may be deteriorated and the overall adhesion effect may be lowered.

The content of the tackifier resin is preferably 5 to 40 parts by weight based on the whole composition. If the content is less than 5 parts by weight, the effect of lowering the melt viscosity due to the addition of the tackifier resin is insufficient and the increase of the melt flow index is not so large, so that the workability may not reach a satisfactory level. When the content exceeds 30 parts by weight The rate of increase of the melt flow index due to the excess of the tackifier resin is not large and the economical efficiency is lowered and the content of the thermoplastic polymer is relatively decreased, thereby deteriorating the overall physical properties of the composition.

The rosin serves to improve the overall adhesive strength of the adhesive composition, is harmless to the human body, and acts as a natural preservative. The amount of the rosin is preferably 1 to 5 parts by weight based on the total composition. When the content is less than 1 part by weight, it is difficult to obtain the adhesive strength improving effect. When the content exceeds 5 parts by weight, the adhesive strength during processing increases, and processing into a product becomes difficult.

The plasticizer is used for imparting flexibility and adhesion to a polymer. The plasticizer according to the present invention is not limited to a specific type, and examples thereof include sorbitol, ethylene glycol, glycerin, glycerin diacetate, and pentaerythritol ≪ / RTI >

The content of the plasticizer is preferably 1 to 10 parts by weight based on the total composition. If the content is less than 1 part by weight, the effect of the addition of the plasticizer is insufficient. If the content exceeds 10 parts by weight, the plasticizers may be excessively used, resulting in poor economical efficiency, and the overall physical properties of the adhesive may be deteriorated.

The filler is used to control the reinforcement and flowability of the composition. The kind of the filler is not particularly limited, and for example, calcium carbonate, clay, bentonite, calcium stearate and the like can be used.

In the meantime, it is preferable to use a mixture of stone powder and pulp powder as a filler in order to reduce odor and bacteria generation while controlling the reinforcement and flowability of the adhesive composition. Due to the compactness of the particles, the stone can realize high strength without using a large amount of additives, and the volume strain due to the surrounding environment is low, so that even when the temperature change is large, the cracking of the adhesive hardly occurs.

The abrasive grains may be in the form of powder of various rocks such as petite, marble, elvan, granite, and jade. Preferably, the abrasive grains having various functions such as antimicrobial activity, antifungal property and ultraviolet ray emission are used.

The pulp powder serves to agglomerate the stones while sucking the liquid components, enhancing the compatibility between the components and enhancing cohesion. At this time, it is preferable that the pulverized powder is mixed at a ratio of about 7: 3 to 8: 2 (w / w).

The content of the filler is preferably 1 to 10 parts by weight relative to the total composition. If the content is less than 1 part by weight, the effect of the addition of the filler is insufficient. If the content is more than 10 parts by weight, the overall physical properties of the adhesive may be deteriorated.

The type of the antioxidant is not limited to a wide range, but includes phenols, aromatic amines, citric acid, ascorbic acid, and the like in order to improve the viscosity and the yellowing phenomenon due to oxidation and decomposition. .

The content of the antioxidant is preferably 0.1 to 1 part by weight based on the whole composition. If the content is less than 0.1 part by weight, the effect of addition of the antioxidant is insufficient. If the content is more than 1 part by weight, the economical efficiency of the adhesive is deteriorated and the overall physical properties may be deteriorated.

On the other hand, the adhesive composition of the present invention is subjected to a pressing operation on the raw fabric, and there is a possibility that the adhesive failure occurs due to the amount of the composition being removed due to the presence of the hole in the fabric.

Thus, the adhesive composition of the present invention may further include nanosilica glass which can improve the adhesive force by uniformly distributing the adhesive composition on the surface of the fabric. In this case, the content of the nanosilica is preferably 0.1 to 5 parts by weight, and the primary particles of the nanosilica is preferably 100 nm or less.

When the content of the nano-silica is less than 0.1 part by weight, the effect of addition of the nano-silica is insignificant. When the content of the nano-silica exceeds 5 parts by weight, not only the adhesive strength is lowered but also blooming occurs on the surface of the adhesive over time. Lt; / RTI > Hereinafter, the structure and effects of the present invention will be described in more detail with reference to specific examples and comparative examples.

[Example 1]

60 parts by weight of ethylene-vinyl acetate copolymer, 25 parts by weight of Sukorez D-300, 3 parts by weight of rosin, 5 parts by weight of ethylene glycol, 4 parts by weight of blast furnace, 2 parts by weight of pulp powder and 1 part by weight of ascorbic acid, Lt; 0 > C to form an adhesive composition and then molded into a pellet type. At this time, the biodegradable low irritant resin was prepared by mixing 2.5 parts by weight of lactic acid monomer with 100 parts by weight of polylactic acid at 160 DEG C for 5 minutes.

 [Example 2]

60 parts by weight of an ethylene-vinyl acetate copolymer, 15 parts by weight of Sukorez D-300, 10 parts by weight of a biodegradable low-magnetic polystyrene resin, 3 parts by weight of rosin, 5 parts by weight of ethylene glycol, 4 parts by weight of blast furnace, 2 parts by weight of pulp powder, And 1 part by weight of an acid were mixed and melted and kneaded at 170 to 180 DEG C to prepare an adhesive composition and then molded into a pellet type. At this time, the biodegradable low irritant resin was prepared by mixing 2.5 parts by weight of lactic acid monomer with 100 parts by weight of polylactic acid at 160 DEG C for 5 minutes.

[Example 3]

Was prepared in the same manner as in Example 1 except that 1 part by weight of nano silica was further added.

 [Comparative Example]

In the conventional TPU hot melt film, after removing the backing paper, it was used.

[Experimental Example]

(1) Mesh adhesion strength

In order to evaluate the mesh adhesion strength of the hot-melt adhesive, the quantified adhesive pellets were melted and applied at 170 ° C between the two sheets of webs, and then pressed at a pressure of 60 kgf / cm 2 at 130 ° C for 30 seconds. The adhesive strength (kgf / cm2) was measured.

 (2) Melt Flow Index

The heating cylinder of the melt flow meter was filled with pellet type adhesive and melted at 160 ° C for about 5 minutes. The weight (g) of the adhesive passing through the cylinder for 10 minutes was measured by placing a weight of 3 kg.

As can be seen from the above table, it was confirmed that the adhesive composition of the present invention had better adhesion and flow index than the conventional product, and even when the biodegradable low-stimulus resin was used, the adhesive force and the flow index did not significantly decrease. Also, when the nanosilica was mixed, the flow index increased significantly.

It will be apparent to those skilled in the art that the above-described embodiments are for illustrative purposes only and that those skilled in the art will readily understand that other embodiments can be readily modified without departing from the spirit or essential characteristics of the embodiments described above You will understand. It is therefore to be understood that the above-described embodiments are to be considered in all respects only as illustrative and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

It is to be understood that the scope of the present invention is defined by the appended claims rather than the foregoing description and should be construed as including all changes and modifications that come within the meaning and range of equivalency of the claims, .

10: CNC machine tool unit
100: Lower table
200:
300: upper table
400:
500: elastic part
600: Radiator

Claims (2)

A lower table having a first clamping jig for supporting a workpiece on an upper surface thereof and capable of moving back and forth along a longitudinal direction thereof,
A main body formed with an internal space including the lower table and guiding movement of the lower table;
An upper table detachably attached to an upper surface of the lower table and including a second clamping jig for supporting a workpiece;
A processing unit installed on an upper portion of the main body to process a workpiece supported by any one of the lower table and the upper table;
An elastic part formed in at least one area inside the body part and absorbing vibrations or shocks through an elastic force when the lower table moves; And
And a radiating portion formed in at least one region of the machining portion and discharging a cutting oil to a machining region of the machining portion,
The lower table portion includes a plurality of vertical frames for supporting the first clamping jig; A lower frame formed on a lower surface of the vertical frame to support the vertical frame; A guide groove formed between the vertical frames for guiding the discharge of the cutting oil; And a protection portion formed on an outer circumferential surface of one of the vertical frame and the lower frame and protecting the vertical frame and the lower frame,
The protector includes a first sheet layer formed on an outer peripheral surface of the vertical frame and the lower frame, the first sheet layer including an inorganic elastic waterproof material; A plurality of waterproof sheets of metal disposed on the first sheet layer; A soft magnetic joint layer adhered to at least one of an upper end of the joint and a lower end of the joint between the waterproof sheets; And a second sheet layer formed on the waterproof sheet, the second sheet layer being made of an inorganic elastic waterproof material; And a coating layer formed on the second sheet layer to protect the second sheet layer from an external stimulus; And an adhesive composition applied to at least one region of the waterproof sheet and fixedly bonding the waterproof sheet, wherein the adhesive composition comprises 40 to 80 parts by weight of a thermoplastic resin, 5 to 40 parts by weight of a tackifier resin, 1 to 5 parts by weight of a pine resin, 1 to 10 parts by weight of a plasticizer, 1 to 10 parts by weight of a filler, 0.1 to 1 part by weight of an antioxidant and 0.1 to 5 parts by weight of nano-
Wherein the elastic portion comprises: a supporting frame supporting the lower table using an elastic force when the lower table moves; Four support plates supporting the support frame placed on the upper side and slidably moving in the left-right direction or the up-down direction by elastic force in response to vibration or impact transmitted from the support frame to attenuate vibration or impact; Two frames of a first frame and a second frame are rotatably connected to a lower portion of each of the four receiving plates to support the receiving plate and adjust the length of the first frame or the second frame, A support frame for determining a support position of the support frame by the support plate; And a lower portion of the first frame is connected to the upper side so as to be rotatable and horizontally slidable, and the lower portion of the second frame is connected to one side so as to be rotatable and vertically slidable, Or supporting pillars for absorbing vibrations or shocks through the elastic force of the cross elastic portion or the vertical elastic portion during the sliding movement of the second frame,
The spinning unit includes a first guide pipe formed inside the spinning unit and guiding the movement of the cutting oil; A second guide pipe formed inside the radiating part and guiding the movement of water; And a spray nozzle connected to the first guide pipe and the second guide pipe to discharge any one of the cutting oil and the water,
Wherein the main body further comprises a storage part for collecting the coolant discharged into the inside and supplying the coolant to the radiator part, wherein the storage part comprises: a storage module for storing the coolant; A supply pipe for supplying the coolant collected from the lower table to the storage module; A discharge pipe connected to the supply pipe and allowing the coolant flowing into the supply pipe to be discharged to the storage module; a filter connected to each of the discharge pipes to filter the foreign substances contained in the coolant; At least one temperature control tube formed inside the storage module, the outer circumferential surface contacting with the cutting oil being formed with corrugation and having cooling water flowing therein to adjust the temperature of the cutting oil; And a connection pipe connected to the first guide pipe and supplying the coolant to the radiator.
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