KR101563879B1 - Mechanical synchronous type scrap cutter - Google Patents

Abstract

The present invention relates to a mechanical synchronous scrap cutter structure, which comprises a fixed body which is fixed to one side of an upper portion of a base and is supplied with scrap remaining after a product has been manufactured, a crankshaft A knife which is installed on the top body and which is connected to the crankshaft and the top body and which is connected to the crankshaft and the top body and converts the rotational power of the crankshaft into a lifting movement And a power transmission unit for transmitting the power to the knife.
Accordingly, since the knife for cutting the scrap is lifted and lowered by using the crankshaft rotational power of the press, a separate drive source is not required to cut the scrap, thereby reducing the size of the equipment and the manufacturing cost, Since a driving error is not generated between the crankshaft and the crankshaft due to the rotational force of the crankshaft, the scrapping phenomenon due to the product processing speed and the difference in scrap cutting speed does not occur.

Description

Mechanical synchronous type scrap cutter

The present invention relates to a mechanical synchronous scrap cutter structure, in which a knife for cutting a scrap is lifted and lowered by using crankshaft rotational power of a press, and a compensating hinge during movement of the connecting bar is moved in accordance with the movement of the interlocking lever, To compensate for the flow and to support the scraper by pressing the scraper before the knife cuts the scrap.

Generally, a press is a machine that applies a force to a material to perform plastic deformation to perform bending, shearing, or section shrinkage, and the press is simply called a press.

Typical examples of the press working are mainly used to produce various shapes by plastic deformation of a metal plate by applying a compressive force to the metal plate. The material is widely used from precision parts of a watch and a camera to a car body. Plastics, fibers and the like are used as well as copper plates, brass plates and aluminum plates.

The feature of the press processing is that it can be processed without heating, and it can be processed in a precise dimension and shape in a short time, has exchangeability, and is suitable for mass production.

These presses produce products continuously using coil materials. Coil stackers and scrab cutters are the devices that produce the products and process the remaining scrabes.

The coil stacker has a constitution in which the coil stacker is installed on one side of the press to produce the product and the remaining material is wound on the winding drum.

However, in order to recycle such a coil stacker in which scrap is wound, a separate cutting operation must be performed in parallel. That is, when the production of one cycle is finished, the coil stacker wound up with scrap must be lifted up to a workpiece and then transferred to a separate cutter. In addition, This was very complicated.

A conventional scrap cutter is installed separately from a press, and is a device for cutting a predetermined size when the scrap remaining after producing the product is supplied to the scrap cutter.

Such a conventional scrap cutter is provided as a separate independent device on one side of the press, so that a separate driving force is provided from the press. Accordingly, if the discharge speed of the scrap discharged from the press and the cutting speed to be cut in the scrap cutter are not constant, the scrap discharged may be twisted or caught by the scrap cutter, which may cause a machine breakdown.

Korean Patent No. 10-0827799

SUMMARY OF THE INVENTION An object of the present invention is to provide a mechanical synchronous scrap cutter structure in which a knife for cutting a scrap is lifted and lowered by using a crank shaft rotational power of the press.

It is another object of the present invention to provide a mechanical synchronous scraper cutter structure in which the compensation hinge in the connecting bar flows according to the movement of the interlocking lever and the hinge link is rotated around the fixed hinge to compensate the flow of the interlocking lever .

It is still another object of the present invention to provide a mechanical synchronous scrap cutter structure in which a knife is pressed and supported by a scrap before cutting the scrap.

To achieve the above object, the present invention provides a machine synchronous scrap cutter comprising: a base; A frame installed on an upper portion of the base; A drive motor installed at an upper portion of the frame; A crankshaft installed at an upper portion of the frame and connected to the drive motor and rotated when the drive motor is driven; A lifting rod connected to the crankshaft and lifted and lowered when the crankshaft rotates; A mold connected to a lower end of the lifting rod to produce a product by processing a material transported along an upper portion of the base; A fixed body fixed to one side of the base and supplied with scrap remaining after the product is manufactured; A top body which is installed on the upper portion of the fixed body and connected to the crankshaft so as to be lifted and lowered when the crankshaft rotates; A knife installed on the top body and cutting the scrap supplied while being lifted and lowered together with the top body when the crankshaft rotates; A power transmission portion connected to the crankshaft and the top body and converting the rotational power of the crankshaft into a lifting motion and transmitting the lifted motion to the knife; And a position compensating unit connected to the fixed body and the top body to guide the knife straight up and down.

Another aspect of the mechanical synchronous scrap cutter structure of the present invention is that the power transmitting portion includes a cam which is coupled to the crankshaft and rotated together with the crankshaft, a connecting bar whose upper end is connected to the cam to be lifted and lowered when the cam rotates, And a power transmitting pin hinged to the other end of the interlocking lever and the top body. The power transmitting pin is hinge-coupled to the other end of the interlocking lever and the top body.

According to still another aspect of the present invention, the position compensating unit includes a hinge link having a lower end hinged to the other end of the fixed body, a lower end coupled to the lower end of the hinge link and a fixed body supporting the rotation of the hinge link, A connecting link hinged at one end of the hinge link and fixed at the other end of the interlocking lever so as to be lifted and elevated together with the interlocking lever, a hinge coupled to one end of the connecting link and the upper end of the hinge link, And a compensation hinge for guiding the knife to be lifted and lowered in the vertical direction while being moved together with one end of the link and the upper end of the hinge link.

Another feature of the mechanical synchronous scrap cutter structure of the present invention is that the top body is provided with a grip portion for pressing the scrap against the top surface of the top body while the knife is in contact with the scrap before cutting the scrap at the time of lowering the top body do.

According to another feature of the mechanical synchronous scrap cutter structure of the present invention, the gripping portion includes a guide shaft coupled to the lower portion of the tower body so as to be elevated and lowered, a guide shaft coupled to the lower end of the guide shaft and moved up and down together with the guide shaft, A clamp for holding the scrap, and a spring coupled to the guide shaft and elastically supporting the clamp downward.

As described above, according to the present invention, there is provided a scaffold for a scaffold, comprising: a fixed body fixed to one side of an upper portion of a base and supplied with scrap leftover from a product; A knife installed on the top body and cutting the scrap supplied while being lifted and lowered together with the top body when the crank shaft rotates; a rotational shaft connected to the crank shaft and the top body; As shown in Fig. Accordingly, since the knife for cutting the scrap is lifted and lowered by using the crankshaft rotational power of the press, a separate drive source is not required to cut the scrap, thereby reducing the size of the equipment and the manufacturing cost, Since a driving error is not generated between the crankshaft and the crankshaft due to the rotational force of the crankshaft, the scrapping phenomenon due to the product processing speed and the difference in scrap cutting speed does not occur.

In the present invention, the stationary body and the top body are provided with a position compensating section, so that the knife is guided straight up and down. Since the upper end of the connecting bar is connected to the cam, when the crankshaft rotates, it moves up and down while drawing an arc. Accordingly, the lower end of the connecting bar can not be vertically moved up and down. The flow of the connecting bar is transmitted to the interlocking lever so that the compensating hinge flows according to the movement of the interlocking lever and the hinge link is pivoted about the fixed hinge to compensate the flow of the interlocking lever. Therefore, the top body and the knife are guided to move vertically in spite of the flow of the connecting bar, so that the cutting of the scrap is stably performed.

The top body of the present invention is further provided with a grip portion for pressing the scrap on the top surface of the top body while the knife is in contact with the scrap before cutting the scrap when the top body is lowered. Therefore, when the top body is lowered, the clamp presses the scrap against the upper surface of the fixed body before the scrap is cut, so that the scrap is cut accurately without cutting when the scrap is cut, thereby preventing malfunction.

1 is a schematic front view showing a mechanical synchronous scrap cutter structure of the present invention;
Fig. 2 is a left side view of Fig. 1
Fig. 3 is a right side view of Fig.
Fig. 4 is an explanatory front view of the main part of Fig. 1
5 is an excerpt front view of Fig. 4
Fig. 6 is a side view of Fig. 5
Fig. 7 is a plan view of Fig. 6

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic front view showing a mechanical synchronous scrap cutter structure of the present invention, Fig. 2 is a left side view of Fig. 1, and Fig. 3 is a right side view of Fig. Fig. 4 is a front view of the main part of Fig. 1, Fig. 5 is a front view of the extract of Fig. 4, Fig. 6 is a side view of Fig. 5, and Fig. 7 is a plan view of Fig.

The machine synchronous scrap cutter structure of the present invention is provided with a base 1 and a frame 3 provided at an upper portion of the base 1.

A drive motor 4 is installed on one side of the frame 3 and a crankshaft 5 connected to the drive motor 4 and rotated when the drive motor 4 is driven is installed at the upper center of the frame 3 .

The crankshaft 5 is connected with a lifting rod 7 which is lifted and lowered when the crankshaft 5 rotates and a ram 8 is provided at the lower end of the lifting rod 7. The ram 8 is provided with a base 1 A mold 9 for producing a product by processing the material to be transferred along the upper portion is installed.

On the other hand, on the upper side of the base 1, a fixed body 20 to which the scrap is supplied is provided.

The top body 21 is connected to the crankshaft 5 and is raised and lowered when the crankshaft 5 rotates.

The knife 22 is installed on the fixed body 20 and the top body 21 and the knife 22 installed on the top body 21 is lifted and lowered together with the top body 21 when the crankshaft 5 rotates Cut the supplied scrap.

The crankshaft 5 and the top body 21 are connected to a power transmission portion 30 that converts the rotational power of the crankshaft 5 into an uplifting motion and transmits it to the knife 22. [

The power transmission portion 30 includes a cam 31, a connecting bar 32, an interlocking lever 34, and a power transmission pin 35.

The cam 31 is engaged with the crankshaft 5 and is rotated together therewith. The connecting bar 32 is connected to the upper end of the cam 31 and is lifted and lowered when the cam 31 rotates. One end of the interlocking lever 34 is coupled to the lower end of the connecting bar 32 by a ball joint 33 and an intermediate portion thereof is hinged to the top body 21. [ The power transmission pin 35 is hinged to the other end of the interlocking lever 34 and the top body 21. [

The lower end of the connecting bar 32 and the corresponding end of the interlocking lever 34 are coupled by a ball joint 33 so that when the connecting bar 32 is lifted or lowered, (32) is transmitted to the interlocking lever (34).

The fixed body 20 and the top body 21 are connected to a position compensating unit 40 for guiding the knife 22 to ascend and descend linearly. The position compensating unit 40 includes a hinge link 43, a fixed hinge 42, a connecting link 41, and a compensation hinge 44.

The lower end of the hinge link (43) is hinged to the other end of the fixed body (20). The fixed hinge 42 is coupled to the lower end of the hinge link 43 and the fixed body 20 to support the rotation of the hinge link 43. One end of the connecting link 41 is hinged to the upper end of the hinge link 43 and the other end is fixed to the other end of the interlocking lever 34 to be moved up and down together with the interlocking lever 34. The compensating hinge 44 is hinged to one end of the connecting link 41 and the upper end of the hinge link 43 so that the one end of the connecting link 41 and the upper end of the hinge link 43 Thereby guiding the knife 22 to be vertically moved up and down.

On the other hand, the top body 21 is provided with a grip portion 50 (see FIG. 1) so as to press the scrap on the top surface of the top body 21 while the knife 22 contacts the scrap before cutting the scrap, ). The grip portion 50 includes a guide shaft 51, a clamp 52, and a spring 53.

The guide shaft 51 is coupled to the lower portion of the top body 21 so as to be raised and lowered. The clamp 52 is coupled to the lower end of the guide shaft 51 and is lifted and lowered together with the guide shaft 51 to grasp the scrap before cutting when the top body 21 is lowered. The spring 53 is composed of a spring 53 coupled to the guide shaft 51 and elastically supporting the clamp 52 downward.

The machine synchronous scrap cutter structure of the present invention drives the drive motor 4 while the work is being conveyed to the side of the scraper knife 22 after passing through the lower side of the mold 9 from the right side of Fig.

When the drive motor 4 is driven, its rotational power is transmitted to the crankshaft 5 through the clutch 6.

When the crankshaft 5 is rotated, the lifting rod 7 coupled to the lifting rod 7 is lifted and lowered and the ram 8 and the mold 9 at the end of the lifting rod 7 are lifted and lowered. The product passing through the lower part is punched and the product is molded. The remaining scrap after the product is molded is supplied to the upper side of the fixed body 20. [

On the other hand, when the crankshaft 5 is rotated, the rotational power of the crankshaft 5 is transmitted to the top body 21 through the power transmitting portion 30, thereby raising and lowering the knife 22.

When the crankshaft 5 is rotated, the cam 31 coupled to the crankshaft 5 is rotated so that the upper end of the connecting bar 32 moves up and down in an arc. When the upper end of the connecting bar 32 is raised and lowered while drawing an arc, the lower end of the connecting bar 32 can not be vertically elevated exactly, and a horizontal flow is generated.

The flow of the connecting bar 32 is transmitted to the interlocking lever 34 so that the compensating hinge 44 is moved in the direction of the arrow according to the movement of the interlocking lever 34 and the hinge link 43 is moved to the fixed hinge 42 So as to compensate the flow of the interlocking lever 34. Therefore, the top body 21 and the knife 22 are guided to move vertically in spite of the flow of the connecting bar 32, so that the cutting of the scrap is stably performed. The scrap cut with the knife 22 descends along the discharge surface 2 and is stored.

The mechanical synchronous scraper structure of the present invention has the following advantages.

The present invention is characterized in that a fixed body 20 fixed to one side of an upper portion of a base 1 and supplied with residual scrap produced by a product is installed on the upper portion of the fixed body 20 and connected to a crankshaft 5 The crankshaft 5 includes a top body 21 which is lifted and lowered when the crankshaft 5 rotates and a crankshaft 5 which is installed on the top body 21 and moves up and down together with the top body 21 when the crankshaft 5 rotates. A knife 22 which is cut and connected to the top body 21 of the crankshaft 5 and converts the rotational power of the crankshaft 5 into a lifting movement and transmits the power to the knife 22 (Not shown).

Therefore, since the knife 22 for cutting the scrap is lifted and lowered by using the rotational power of the crank shaft 5 of the press, there is no need for a separate driving source for cutting the scrap, thereby reducing the size of the facility and the manufacturing cost.

Further, since the product cutting and scraping cutting of the press are performed by the rotational force of one crankshaft 5, no drive error is generated between them, so that the scrapping phenomenon due to the product processing speed and the difference in scrap cutting speed is not generated .

Second, in the present invention, the position compensation unit 40 is provided in the fixed body 20 and the top body 21 to guide the knife 22 in a straight line. Since the upper end of the connecting bar 32 is connected to the cam 31, the upper end of the connecting bar 32 is lifted and lowered while drawing the arc when the crankshaft 5 rotates, It can not be ascended or descended exactly on the vertical line, and flow in the horizontal direction is generated.

The flow of the connecting bar 32 is transmitted to the interlocking lever 34 so that the compensating hinge 44 is moved in accordance with the movement of the interlocking lever 34 and the hinge link 43 is rotated about the fixed hinge 42 And compensates for the flow of the interlocking lever 34 while rotating.

Therefore, the top body 21 and the knife 22 are guided to move vertically in spite of the flow of the connecting bar 32, so that the cutting of the scrap is stably performed.

Thirdly, in the top body 21 of the present invention, when the top body 21 is lowered, the knife 22 is first contacted with the scrap before cutting the scrap, so that the scrap is pressed on the upper surface of the top body 21, (50).

Accordingly, when the top body 21 is lowered, the clamp 52 presses the scrap against the upper surface of the fixed body 20 before the scrap is cut, so that the scrap is cut accurately without being scratched when the scrap is cut, .

A wear-resistant coating layer may be formed on the knife 22 and the clamp 52 of the grip portion 50. [ The coating layer is formed by spraying a powder of 96 to 98% by weight of chromium oxide (Cr 2 O 3) and 2 to 4% by weight of titanium dioxide (TiO 2) in the periphery of the knife 22 and the clamp 52.

The reason why the ceramic coating is applied to the knife 22 and the clamp 52 is to prevent abrasion and corrosion. Compared to chrome plating or nickel chrome plating, the ceramic coating is excellent in corrosion resistance, scratch resistance, abrasion resistance, impact resistance and durability.

Chromium oxide (Cr2O3) acts as a passivity layer that blocks oxygen entering the inside of the metal, thereby preventing rusting.

Titanium dioxide (TiO2) is a white pigment because it is very stable physicochemically and has high hiding power. And is also widely used for ceramics having high refractive index because of high refractive index. And has characteristics of photocatalytic property and superhydrophilic property. Titanium dioxide (TiO2) acts as an air purification function, an antibacterial function, a harmful substance decomposition function, a pollution prevention function, and a discoloration prevention function. This titanium dioxide (TiO2) ensures that the coating layer is wrapped around the knife 22 and the clamp 52 and dissolves and removes foreign matter adhering to the knife 22 and the clamp 52, Thereby preventing the clamp 52 from being damaged.

When chromium oxide (Cr 2 O 3) and titanium dioxide (TiO 2) are mixed and used, the mixing ratio thereof is such that 2 to 4% by weight of titanium dioxide (TiO 2) is mixed with 96 to 98% by weight of chromium oxide (Cr 2 O 3) desirable.

When the mixing ratio of the chromium oxide (Cr 2 O 3) is less than 96 to 98%, the coating of chromium oxide (Cr 2 O 3) often breaks in an environment of high temperature, The rust prevention effect was reduced suddenly.

When the mixing ratio of titanium dioxide (TiO2) is less than 2 to 4% by weight, the effect of titanium dioxide (TiO2) is insignificant so that the purpose of mixing it with chromium oxide (Cr2O3) is discolored. That is, titanium dioxide (TiO2) dissolves and removes foreign matter attached to the periphery of the knife 22 and the clamp 52 to prevent the knife 22 and the clamp 52 from being corroded or damaged, If the amount is less than 2 to 4% by weight, it takes a long time to decompose the attached foreign matters.

A coating layer made of these materials is plasma-coated to a thickness of 50 to 600 mu m around the knife 22, a hardness of 900 to 1000 HV, and a surface roughness of 0.1 to 0.3 mu m.

This coating layer is sprayed by spraying the above powdered powder and gas at 1400 캜 around the knife 22 at a Mach 2 speed and spraying at 50 to 600 탆.

When the thickness of the coating layer is less than 50 탆, the effect of the above-described ceramic coating layer can not be guaranteed. When the thickness of the coating layer exceeds 600 탆, the above-mentioned effect is insignificant. On the other hand, Is wasted.

On the other hand, while the coating layer is coated on the knife 22 and the clamp 52, the temperature of the knife 22 and the clamp 52 is increased. In order to prevent the knife 22 and the clamp 52 from being deformed, 22 and the clamp 52 are cooled by a cooling device (not shown) to maintain a temperature of 150 to 200 캜.

Further, a sealing material made of anhydrous chromic acid (CrO3) made of a metal-based glass quartz system may be further applied to the coating layer of the clamp 52. Anhydrous chromic acid is applied as an inorganic sealing material around a coating layer made of chromium nickel powder.

Anhydrous chromic acid (CrO3) is used in places that require high abrasion resistance, lubricity, heat resistance, corrosion resistance and releasability, is not discolored in the atmosphere, has high durability, and has good abrasion resistance and corrosion resistance. The coating thickness of the sealing material is preferably about 0.3 to 0.5 mu m. If the coating thickness of the sealing material is less than 0.3 占 퐉, the sealing material easily peels off even in a slight scratch groove, so that the above-mentioned effect can not be obtained. If the coating thickness of the sealing material is made thick enough to exceed 0.5 탆, pin holes, cracks, and the like will increase on the plated surface. Therefore, the coating thickness of the sealing material is preferably about 0.3 to 0.5 mu m.

Since the coating layer having excellent wear resistance and oxidation resistance is formed around the knife 22 and the clamp 52 which are frequently exposed to the outside, the knife 22 and the clamp 52 are prevented from being worn or oxidized, The life of the product is prolonged.

1: Base 2: Outlet surface
3: Frame 4: Driving motor
5: Crankshaft 6: Clutch
7: lifting rod 8: ram
9: mold 20: fixed body
21: Top Body 22: Knife
30: Power transmission unit 31: Cam
32: connecting bar 33: ball joint
34: interlocking lever 35: power transmission pin
40: position compensation unit 41: hinge link
42: fixed hinge 43: connecting link
44: compensation hinge 50:
51: guide shaft 52: clamp
53: spring

Claims (5)

A base 1;
A frame 3 installed on the top of the base 1;
A drive motor 4 installed on the upper part of the frame 3;
A crankshaft 5 installed on the upper part of the frame 3 and connected to the drive motor 4 and rotated upon driving of the drive motor 4;
A lifting rod 7 connected to the crankshaft 5 and lifted and lowered when the crankshaft 5 rotates;
A mold 9 connected to the lower end of the lifting rod 7 to produce a product by processing the material to be fed along the upper portion of the base 1;
A fixed body (20) fixed to one side of the base (1) and supplied with scrap remaining after the product is produced;
A top body 21 mounted on the upper portion of the fixed body 20 and connected to the crankshaft 5 to be lifted and lowered when the crankshaft 5 rotates;
A knife 22 installed on the top body 21 and cutting the scrap supplied while lifting up and down with the top body 21 when the crankshaft 5 rotates;
A power transmission portion 30 connected to the crankshaft 5 and the top body 21 and configured to convert the rotational power of the crankshaft 5 into an upward movement and transmit the rotational power to the knife 22;
And a position compensator (40) connected to the fixed body (20) and the top body (21) and guiding the knife (22) to move up and down linearly.
The power transmission unit according to claim 1,
A cam 31 coupled to the crankshaft 5 and rotated together therewith,
A connecting bar 32 connected to the upper end of the cam 31 to be lifted and lowered when the cam 31 rotates,
An interlocking lever 34 whose one end is coupled to the lower end of the connecting bar 32 by a ball joint 33 and whose middle portion is hinged to the top body 21,
And a power transmission pin (35) hinged to the other end of the interlocking lever (34) and the top body (21).
The position compensating apparatus according to claim 1,
A hinge link 43 whose lower end is hinged to the other end of the fixed body 20,
A fixed hinge 42 coupled to the lower end of the hinge link 43 and the fixed body 20 to support the rotation of the hinge link 43,
A connecting link 41 hinged to the upper end of the hinge link 43 at one end and fixed at the other end of the interlocking lever 34 to be lifted and lowered together with the interlocking lever 34,
The knife 22 is hinged to one end of the connecting link 41 and the upper end of the hinge link 43 so that the knife 22 is moved together with one end of the connecting link 41 and the upper end of the hinge link 43, And a compensation hinge (44) for guiding the vertical movement of the scraper in the vertical direction.
[3] The apparatus according to claim 1, wherein the top body (21)
The grip portion 50 is further provided so as to press the scrap on the upper surface of the top body 21 while the knife 22 is in contact with the scrap before the top body 21 is lowered, Machine synchronous scrap cutter structure.
The grip portion (50) according to claim 4,
A guide shaft 51 coupled to the lower portion of the top body 21 so as to be raised and lowered,
A clamp 52 coupled to the lower end of the guide shaft 51 and lifted and lowered together with the guide shaft 51 and holding the scrap before cutting when the top body 21 is lowered,
And a spring (53) coupled to the guide shaft (51) and elastically supporting the clamp (52) downward.

Images