JP4981199B2 - Electric press with dust generation prevention mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric press equipped with a dust generation prevention mechanism that is extremely suitable for performing a pressing operation in a factory, a laboratory, or the like having a clean room inside, and can have a simple structure.
[0002]
[Prior art]
In factories or laboratories that assemble precision instruments such as optical instruments, measuring instruments, and watches, and manufacture electronic parts such as semiconductors and liquid crystals, even in the production stage of products or developed products, even a small amount of dust may be present on the equipment and parts. , There is a risk that it will become defective due to dust and the like. In order to prevent such a situation, many factories have a clean room or the whole factory is a clean room.
[0003]
In such a clean room, employees are required to wear work clothes that do not easily generate dust. Furthermore, machine tools and inspection machines used in clean rooms must also have a dust prevention function. The dust generation prevention function is a function to prevent dust and dust from being generated from vibrations, impacts, frictions, and the like caused by various work operations when the apparatus is operated, and to be mixed into the product.
[0004]
[Problems to be solved by the invention]
In general, a casing of a machine tool such as a small machine robot is composed of a plurality of parts, and these are assembled, but a slight gap is formed at the joint portion. These gaps are not a problem at all if the machine tool is used in an environment where it is not necessary to pay much attention to dust and dirt.
[0005]
However, as described above, a general machine tool cannot be used as it is in an operation performed in a clean room in the assembly of precision equipment or the manufacture of electronic components. This is because when the machine tool is in operation, dust or dust may be generated due to a slight impact at the time of startup or vibration generated during operation, and the dust or dust may be mixed into an important part of the manufactured product. Because.
[0006]
The cause of the generation of these dusts is, for example, an electric motor that is a rotational drive source, a ball screw device that is the electric motor and a driven source, and a belt that performs drive transmission of both of them. For this reason, dusts of various metals, synthetic resins, rubber, etc. are generated and these are scattered to the outside through various gaps in the casing. Will end up.
[0007]
Therefore, a machine tool used in a clean room needs a function for preventing dust generation. Machine tools that have such a function and can withstand the use of a clean room have been developed, but many of them are large in size and complicated as a whole because the dust prevention function is large. Tended to be structured.
[0008]
In addition, a slit is formed in the casing for air-cooling heat generated by the operation of a motor that drives the machine tool. Dust and dust may leak out from the cooling slit. Further, in the case where a cooling fan such as a motor is mounted in the casing, a larger amount of dust and dust are scattered outside the casing.
[0009]
[Means for Solving the Problems]
Accordingly, the inventor has intensively and intensively studied to solve the above problems, and as a result, the present invention can be applied to a component composed of a dust generating drive unit, a drive transmission unit, and a press structure unit. A casing that is an outer portion of an electric press that is housed in an airtight manner to separate the inside and the outside, a suction pipe in the casing that is mounted in the casing, and the inside and outside of the casing that communicate with each other and in an operating state. The suction pipe in the casing connected to the connection port, comprising a connection port provided in the casing for sucking dust and dust inside the casing of the electric press to the outside of the casing through the suction tube in the casing Is close to the constituent members of the drive unit 5, the drive transmission unit 6 and the press structure unit equipped with dust generation installed in the casing, and a dust generation suction hole is formed in the proximity part, Contact Complicating the structure of the electric press by providing an electric press provided with a dust generation prevention mechanism comprising the external exhaust pipe connectable to the connection port and an exhaust device joined to the external exhaust pipe It is suitable for work in a clean room without increasing the size and solving the above problems.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The electric press according to the present invention has a casing A and a working bed 3 as a configuration of the outer shape. And the casing A has confidentiality. The casing A is composed of a head portion 1 and a column portion 2 (see FIGS. 1 and 2).
[0011]
An operation panel is arranged on the front side of the head unit 1. A column portion 2 is formed in the lower portion of the head portion 1, and a joint portion between the head portion 1 and the column portion 2 is sealed so as to have a confidential structure. Moreover, the head part 1 and the column part 2 are made the shape excellent in rigidity. The confidential state includes a substantially confidential state, and the casing A may not be completely confidential.
[0012]
A work bed 3 is provided in the lower part of the casing A, and a workpiece is placed thereon, and various pressing operations are performed on the workpiece. A controller 4 is disposed in front of the work bed 3. The working bed 3 and the casing A assembled on the working bed 3 are secretly joined, and the inner side and the outer side are secretly partitioned. In addition, when the casing A has constituent members other than the head portion 1 and the column portion 2, the plurality of constituent portions are also made to have a secret structure by joining the sealing portions with a sealing material.
[0013]
Main components mounted in the casing A are a drive unit 5, a drive transmission unit 6, a press structure unit 7, and a control device unit 8. The component is driven or transmitted by itself. Specifically, the drive unit 5 is an electric motor. The drive transmission unit 6 is a part that transmits power from the drive unit 5 to the press structure unit 7, and mainly includes a belt 6a, a pulley 6b, and the like.
[0014]
The press structure portion 7 includes a ram portion 7a and a ram drive portion 7b that drives the ram portion 7a in the vertical direction. The ram portion 7 a performs a pressing operation on the workpiece placed on the work bed 3. The ram drive portion 7b has a substantially cylindrical shape, and the cylindrical member is rotated by a ball screw member, and the shaft member on which the ram portion 7a is mounted moves in the vertical direction with a stroke s (see FIG. 2).
[0015]
Further, the ram portion 7a of the press structure portion 7 is provided with a bellows-like dust boot 14 between the periphery thereof and the head portion 1, and when the ram portion 7a descends, the dust boot 14 extends and the ram portion 7a rises. The dust boot 14 is shrunk (see FIG. 2). The dust inside the casing A is prevented from leaking out of the casing A by the dust boot 14 in the raising / lowering operation of the ram portion 7a.
[0016]
In the casing A, a suction pipe 10 in the casing is mounted. The suction pipe 10 in the casing passes through a portion close to a component in which the drive unit 5, the drive transmission unit 6, the press structure unit 7 and the like described above may vibrate or generate an impact during driving. A route is given (see FIG. 2).
[0017]
The suction pipe 10 in the casing is composed of a pipe portion 10a and a dust generation suction hole portion 10b (see FIG. 3). As the material of the suction pipe 10 in the casing, a metal pipe such as stainless steel, a synthetic resin such as silicon rubber, or the like is used, but other materials may be used.
[0018]
The pipe portion 10 a is provided with a route in the casing A that is close to a portion where the drive unit 5, the drive transmission unit 6, and the press structure unit 7 may generate dust. The dust generation and suction hole 10b is formed in the tube portion 10a over a range where the drive unit 5, the drive transmission unit 6 and the press structure unit 7 are close to each other.
[0019]
As an example of the dust generation suction hole portion 10b, a collection portion of suction small holes 10b1, 10b1,... Formed at a plurality of predetermined intervals. The suction small holes 10b1, 10b1,... Suck dust and dust and try to absorb heat generated by each device. 4 (A) and 4 (B) show a state in which dust generation d from the component parts (drive unit 5, drive transmission unit 6, press structure unit 7 and control device unit 8) is sucked.
[0020]
Further, as another embodiment of the dust generation suction hole 10b, it may have a long hole shape along the proximity region of the drive unit 5, the drive transmission unit 6, the press structure unit 7, and the control device unit 8. . The end portion of the tube portion 10a of the suction pipe 10 in the casing is attached to the column portion 2 of the casing A and has a structure communicating with the outside of the casing A. Specifically, the connection port portion 11 is mounted on the outer surface of the column portion 2, and the connection port portion 11 and the tube portion 10a are coupled.
[0021]
A pressure adjustment valve 12 is attached to the casing A. For example, the pressure adjusting valve 12 constantly adjusts a change in air pressure in the casing A due to the raising and lowering of the ram portion 7a in the press structure portion 7 to be constant. And the pressure in the casing A can be appropriately adjusted by allowing the air in the clean room to flow into the casing A by the pressure adjusting valve 12. The pressure adjustment valve 12 may be electromagnetically adjusted, manually adjusted, or may be equipped with a pressure sensor so that it can be operated at a predetermined pressure.
[0022]
The electric press includes an external exhaust pipe 15 outside the casing A, and connects the external exhaust pipe 15 to the connection port portion 11 to communicate with the suction pipe 10 in the casing. A blower 16 is disposed outside the clean room, and the other end of the external exhaust pipe 15 is connected to the blower 16. And by the suction operation of the blower 16, the dust in the casing A is always discharged | emitted outside from the electric press of an operation state. Since the casing A is in a confidential state as described above, dust and dust do not leak into the clean room. The external exhaust pipe 15 may be equipped with a flow meter 17 (see FIGS. 2 and 7).
[0023]
Next, regarding another embodiment of the present invention, as described above, the casing A has a structure in which the inside and the outside are secretly partitioned, but the inside of the casing A is equipped with the suction pipe 10 in the casing. This is not done (see FIGS. 6 and 7). In the casing A, a connection port 11 is formed, and the casing A is in a secret room state partitioned from the outside. The drive unit 5, the drive transmission unit 6, the press structure unit 7, and the control device unit installed inside the casing A 8 generates dust from the inside of the casing A of the connection port 11.
[0024]
Next, an embodiment in which a cooling slit hole 13 is provided in the head part 1 and the column part 2 of the casing A will be described (see FIG. 8). The cooling slit 13 is configured so that the electric press of the present invention can be used in a work place other than a clean room.
[0025]
That is, when the electric press of the present invention is used outside the clean room, the cooling slit hole portion 13 is opened, and external air can be taken into the casing A, and the drive portion within the casing A 5, the heat generating components such as the press structure section 7 or the control equipment section 8 can be cooled.
[0026]
The cooling slit hole portion 13 has a structure that can be opened and closed. When the cooling slit hole is closed, the inside of the casing A is kept secret, and the outside and inside of the casing A are partitioned secretly. . The cooling slit hole portion 13 is mainly composed of a fixed slit portion 13a and a movable slit plate member 13b [see FIG. 9 (A)].
[0027]
The fixed slit portion 13a is formed integrally with the casing A, and a plurality of fixed slit holes 13a1, 13a1,... Are formed in a line at a predetermined interval, and the head portion 1 or column portion of the casing A is formed. 2 (see FIG. 9A).
[0028]
The movable slit plate member 13b has a plate shape and is disposed on the fixed slit portion 13a. A plurality of movable slit holes 13b1, 13b1,... Are formed in the movable slit plate member 13b as well as the fixed slit holes 13a1, 13a1,... Formed in the fixed slit portion 13a. The distance between the movable slit holes 13b1, 13b1,... Is equal to the distance between the fixed slit holes 13a1, 13a1,.
[0029]
Further, a plurality of screw holes 13c1, 13c1,... Are formed on the fixed slit portion 13a side, while the movable slit plate member 13b has a long hole 13c2, corresponding to the position of the screw holes 13c, 13c,. 13c2, ... are formed. The movable slit plate member 13b is fixed onto the fixed slit portion 13a via screw members 13d, 13d,.
[0030]
Further, by loosening the screw members 13d, 13d,..., The movable slit plate member 13b slides on the fixed slit portion 13a along the longitudinal direction of the long holes 13c2, 13c2,..., And the movable slit holes 13b1, 13b1,. .. And the slits 13a1, 13a1,... Can be opened and closed by matching or shifting the positions (see FIGS. 9B and 9C).
[0031]
Further, as shown in FIG. 10, the cooling slit hole portion 13 is secretly secured by covering the fixed slit portion 13a with a lid member 13e that does not form the cooling slit hole and tightening with the screw members 13d, 13d,. There are also closed embodiments. Further, when the cooling slit hole 13 is opened, the lid member 13e is removed and used.
[0032]
【Effect of the invention】
The invention according to claim 1 is an outer portion of an electric press that houses a component formed of a dust generating drive unit, a drive transmission unit, and a press structure unit in an electric press and hermetically separates the inside from the outside The casing A, the suction pipe 10 in the casing mounted in the casing, and the inside and outside of the casing A communicate with each other, and dust and dust inside the casing of the electric press in an operating state are communicated to the outside of the casing. The suction port 10 in the casing is close to the dust-generating component provided in the casing A, and is generated in the proximity portion. By using the electric press provided with the dust generation prevention mechanism formed with the dust suction hole 10b, dust and dust in the casing A can be efficiently sucked when the electric press is in operation.
[0033]
The above effect will be described in detail. In the casing A, the suction pipe 10 in the casing is mounted, and one end of the suction pipe 10 in the casing communicates with the outside from the inside of the casing A through the connection port portion 11. . Furthermore, the suction pipe 10 in the casing passes through a route close to the constituent members (the drive unit 5, the drive transmission unit 6, the press structure unit 7, the control device unit 8 and the like) disposed inside the casing A, Since the dust generation suction part 10b is formed in the vicinity, it is connected to a blower or the like through the exhaust hose from the outside, and by performing a suction operation, the component member group having the dust generation possibility during operation is used. Dust and dust can be sucked out immediately. Furthermore, since the suction pipe 10 in the casing is close to the constituent member group having the possibility of generating dust, there is an advantage that heat generated from the constituent member group can be absorbed.
[0034]
Next, according to a second aspect of the present invention, in the first aspect, the connection port portion 11 includes an external exhaust pipe 15 connectable and a blower 16 joined to the external exhaust pipe 15 to prevent dust generation. Since the electric press provided with the mechanism is used, the external exhaust pipe 15 can remove the dust from the casing A relatively easily by starting the blower 16.
[Brief description of the drawings]
FIG. 1 is a perspective view of an electric press. FIG. 2 is a longitudinal side view of the electric press. FIG. 3 is a perspective view showing a configuration of a suction pipe and components in the casing. A partially cut away plan view showing the suction tube sucking dust and dust from the components (B) is a partially cut away side view showing the suction tube in the casing sucking dust and dust from the components. FIG. 5 is a perspective view of the electric press as viewed from the front. FIG. 6 is a perspective view of the second embodiment of the present invention. FIG. 7 is a vertical side view of the second embodiment of the present invention. FIG. 9A is a perspective view of a fixed slit portion and a movable slit plate member, and FIG. 9B is a sectional view of a cooling slit hole portion in an open state. FIG. FIG. 10 is a cross-sectional view of the closed slit hole portion. FIG. Cross-sectional side view EXPLANATION OF REFERENCE NUMERALS
A ... Casing 10 ... In-casing suction pipe 10b ... Dust generation suction hole 11 ... Connection port 12 ... Pressure adjusting valve 13 ... Cooling slit hole 15 ... External exhaust pipe 16 ... Blower

Claims (2)

A casing which is an outer portion of an electric press that houses a component formed of a dust generating drive unit, a drive transmission unit, and a press structure unit in an electric press and hermetically separates the inside and the outside;
A suction pipe in the casing mounted in the casing;
A connecting port portion provided in the casing for communicating the inside and outside of the casing of the electric press in an operating state and sucking dust and dust inside the casing to the outside of the casing through the suction pipe in the casing. And consist of
The suction pipe in the casing connected to the connection port is close to the constituent members of the drive unit 5, the drive transmission unit 6 and the press structure unit, which are equipped in the casing and have dust generation properties, An electric press provided with a dust generation prevention mechanism characterized by forming a dust generation suction hole. In Claim 1, the external exhaust pipe connectable to the connection port portion;
An electric press equipped with a dust generation prevention mechanism, characterized by comprising an exhaust device joined to the external exhaust pipe.

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