JP2012152205A - Transmission device of small-sized chopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the transmission device of a small-sized chopper that uses a parallel shaft flange fitting type geared motor into which a gear speed reduction mechanism of a maker standard specifications is integrally incorporated while covering the shortcomings of the motor, does not need a preparation expense and has a low production cost.SOLUTION: The transmission device of a small-sized chopper includes: a coupling 5 for linking an output shaft 41 of a driving mechanism to a screw 3 in an in-line manner; a connector 8 holding a thrust bearing 6 for receiving a force feed reaction force by the screw 3 which is received by the coupling 5, by abutting on the rear end face of the coupling 5, having a rear face on which the driving mechanism the driving mechanism is fastened to a mounting surface formed at the driving mechanism with bolts by ferrule joint so that the axes of a central hole and the output shaft 41 are concentric with each other, and a side opposite to the driving mechanism on which fixing means for detachably supporting a cylinder 2 is equipped; and a machine frame 10 extended in an L-shape from a longitudinal wall 101 to which the connector 8 is fixed, and forming a bottom frame. The driving mechanism is a parallel shaft flange fitting type geared motor 4 of manufacturer's standard specifications into which a gear speed reduction mechanism is integrally incorporated.

Description

The present invention relates to a transmission device using a motor in a small chopper that processes meat into mince.

Patent Document 1 discloses a transmission device in which a screw is connected to an output shaft from a gear reduction device that is belt-transmitted from an output shaft of a motor, as a transmission device for a screw in a minced meat machine.

Patent Document 2 describes a transmission device in which a gear transmission mechanism housing case is integrally screwed to the front surface of a motor case, and a screw is tightly fitted into a fitting portion drilled in a reduction gear support shaft end. .

Japanese Utility Model Publication No. 62-39843 Japanese Utility Model Publication No. 40-20946

In any of the above patent documents, there is a problem that it is difficult to suppress the manufacturing cost because the reduction gear is prepared exclusively and requires a production preparation cost, but the production scale is limited. In particular, in order to spread more widely in small choppers, reducing the product price is regarded as the utmost proposition.
The present invention compensates for the shortcomings of a parallel shaft flange-mounted geared motor in which a widely used manufacturer's standard gear reduction mechanism is integrated, and does not require any preparation cost and is low in manufacturing cost. An object is to provide a transmission device for a small chopper.

In order to solve the above-described object, a transmission for a small chopper according to the present invention includes a coupling that couples an output shaft and a screw of a drive mechanism in-line with engagement holes opened at both ends,
Thrust in which the coupling is inserted into the center hole, and the front end surface of the coupling abuts against the flange formed at the start end of the screw and receives the pressure reaction force caused by the screw against the rear end surface of the coupling. The bearing is held, and the drive mechanism is bolted to the rear surface by the mounting surface formed on the drive mechanism and the center, and the center hole and the output shaft are bolted together. A connector having fixing means for supporting the
A machine frame that extends in an L shape from the vertical wall to which the connector is fixed and forms a bottom frame;
The drive mechanism is a manufacturer standard specification parallel shaft flange-mounted geared motor in which a gear reduction mechanism is integrated.

The transmission device of the small chopper according to the present invention can be used with a highly versatile parallel shaft flange mounting type geared motor with a gear reduction mechanism integrated therein. Since it is not necessary and the motor is a mass-produced product, it can be purchased at a low cost at any time, so that the manufacturing cost can be reduced.

It is a partial cross section side view which shows the transmission device of a small chopper.

The form for implementing this invention is demonstrated. FIG. 1 is a partial cross-sectional side view of a small chopper in which the transmission device of the present invention is implemented.

The small chopper in the present invention is connected to the bottom of the hopper 1 and receives the meat, the screw 3 placed horizontally in the cylinder 2, the meat is pumped by the screw 3, and the tip is not shown. It is a well-known configuration that is processed into a mince by a knife and a fixed perforated plate, and the screw 3 can be withdrawn forward from the drive portion at the time of cleaning after completion of the operation, and the cylinder 2 has an appropriate support portion. The fixing device 15 is detachable.

As a drive mechanism for rotationally driving the screw 3, a motor has conventionally been used, but the motor is often a single-purpose motor called a general-purpose motor that does not have a speed reduction mechanism, and the speed reduction mechanism has been made exclusively.
In the present invention, a geared motor of a manufacturer standard specification in which a gear reduction mechanism with high versatility is integrally incorporated in a drive mechanism can be used. The configuration thereof includes an output shaft 41 of the geared motor 4 and a geared motor. A coupling 5 for opening the engagement hole with the screw 3 at both ends and connecting the output shaft 41 and the screw 3 in-line, and a front end face (end face on the motor 4 side) of the coupling 5 inserted through the center hole are provided. A thrust bearing 6 for receiving and receiving pressure reaction force by the screw 3 received by contact with a flange formed at the start end of the screw 3 (screw pressure start end) by contact with the rear end surface (motor side end surface) of the coupling 5 The motor 4 that is a drive mechanism is held on the rear surface (motor side), and the shaft is attached to the attachment surface formed on the flange of the motor 4 and the intro formed on the joint surface of the rear surface. And a connecting tool 8 having a fixing device 4 for removably supporting the cylinder 2 by inserting a supporting end of the cylinder 2 on the side opposite to the motor, and the connecting tool 8 is fixed by the bolt 9. It is comprised from the machine frame 10 extended in the L shape from the vertical wall 101, and forming a bottom frame.
In addition, although the connection tool 8 in this example is configured to be integrally screwed as shown in FIG. 1 by being split into two parts inside and outside for manufacturing reasons, an integrated structure may be used.

The motor 4 implemented in the present invention is selected from those sold by each manufacturer as standard specifications. Therefore, stable and high-quality motors are supplied at a low price due to mass production effects under thorough quality control.
In the present invention, an optimum motor is selected as a parallel shaft flange-mounted geared motor in which a gear reduction mechanism is integrated. For example, a CNVM type cyclo (registered trademark) manufactured by Sumitomo Heavy Industries, Ltd. ) A gear motor with a built-in planetary gear mechanism called a speed reducer (the company's name is a geared motor).
This gear motor is advantageous for a compact machine structure because the motor shaft and the output shaft are arranged in-line.
When selecting the detailed specifications of this motor, it is determined from the motor capacity and reduction ratio close to the desired processing capacity of the chopper part. Since these are standard specifications, the specifications of the chopper part such as screw Adjust the pitch.
Further, as a weak point in the configuration of this type of geared motor, there is a limit in the allowable amount of thrust load on the output shaft.In the present invention, since the reaction force generated when the screw pumps meat is large, this thrust load is applied to the output shaft. In order to simplify the configuration, a device for directly connecting the output shaft and the screw in-line is required.

Therefore, in the present invention, the output shaft 41 of the geared motor 4 and the shaft end of the screw 3 are connected by the coupling 5. The coupling 5 is a cylindrical body having engagement holes at both ends, and a hole opened in the center of an intermediate partition wall by fitting the output shaft 41 of the geared motor with a key interposed in one engagement hole. And is attached to the output shaft 41 with a countersunk screw. The opposite engagement hole has a polygonal inner periphery and is loosely fitted to the shaft end of the screw 3 having the same outer shape, and the output shaft 41 and the screw 3 are coupled in-line to provide power. Is transmitted.

The connecting tool 8 having a joint surface between the center hole through which the coupling 5 is inserted and the flange surface of the motor 4 on the rear surface is provided with an iron that protrudes from the flange surface of the motor 4 on the joint formed on the joint surface. Are fitted, the shaft centers are aligned, and the motor 4 is fixed by the bolt 7.
On the opposite side of the connector 8 to which the motor 4 is fixed, a support hole of the cylinder 2 is inserted and a support hole is opened so that it can be attached and detached by an appropriate fixing device 15.

The coupling 5 receives a thrust load generated by the pressure reaction force of the screw 3 with the front end surface of the coupling 5 coming into contact with the flange formed at the start end of the screw 3, but the end surface on the opposite side of the coupling 5 ( A thrust bearing 6 in contact with the rear end surface) is attached to the connector 8 so that the reaction force (pressure reaction force) at the time of meat pressure feeding of the screw 3 does not reach the output shaft 41 of the motor 4.
Therefore, at the engagement portion between the output shaft 41 and the coupling 5 of the screw 3, no thrust load acts at all, and only a simple rotation with no lateral pulling load (bending load) such as belt-hanging transmission needs to be transmitted. It becomes composition.
This makes it possible to use a standard geared motor that is limited in terms of thrust load and lateral load.

An oil seal 12 is fitted on the thrust bearing 6 on the screw 3 side to prevent the gravy oozing from the cylinder 2 from flowing into the thrust bearing 6 and the geared motor 4.
The gravy stopped by the oil seal 12 is discharged out of the machine through a relief hole 13 opened in the connector 8.

Since the coupling 5 and the screw 3 are connected inline from the output shaft 41 in this way, the configuration is simple, the motor is extended to the opposite position of the chopper portion, and the balance is good, and the height of the fuselage In addition, the width dimension can be reduced and the size can be reduced.

The connector 8 is bolted to a vertical wall 101 constituting the machine frame 10, and a bottom frame 102 extends from the vertical wall 101 in an L-shape. In the embodiment, the vertical wall 101 made of a relatively thick plate is used. A machine frame 10 is configured as a bottom frame 102 extending from a lower portion of the frame by combining angle members. From the bottom frame 102, a stationary leg 14 is appropriately projected and stably placed on the work table.

A cover 11 that covers the geared motor 4 is attached to the machine frame 10. A ventilation hole is appropriately opened in a part of the cover 11 as an outlet for cooling air from the motor 4.
The cover 11 has a tunnel shape as shown in FIG. 1 and has a front edge welded to the vertical wall 101 so that the rear end can be opened and closed. From the opening on the rear edge, the motor 4 and the coupling 8 can be tightened. Tightening the attachment bolts 7 and 9 improves the confidentiality, so that the juice does not penetrate inside the cover during the work, and the head of the mounting screw does not come out on the surface, so cleaning is possible. It becomes easy to do.

2. Cylinder 3. Screw 4. 4. Geared motor Coupling 6. Thrust bearing8. Connecting tool 10. Machine frame 101. Vertical wall

Claims (1)

A coupling that couples the output shaft and the screw of the drive mechanism in-line with the engagement holes opened at both ends, and
Thrust in which the coupling is inserted into the center hole, and the front end surface of the coupling abuts against the flange formed at the start end of the screw and receives the pressure reaction force caused by the screw against the rear end surface of the coupling. The bearing is held, and the drive mechanism is bolted to the rear surface by the mounting surface formed on the drive mechanism and the center, and the center hole and the output shaft are bolted together. A connector having fixing means for supporting the
A machine frame that extends in an L shape from the vertical wall to which the connector is fixed and forms a bottom frame;
A transmission device for a small chopper in which the drive mechanism is a manufacturer-standard parallel shaft flange-mounted geared motor in which a gear reduction mechanism is integrated.

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