JPH077469U - Bone remover - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a power-driven, easy-to-operate bone dissector. [Structure] A support member swingably supports an operating arm from a substantially horizontal position to an upright position, and a meat pressing member located near the tip of the operating arm in the horizontal position is provided. A tongue for grasping a bone is pivotally supported so as to be openable and closable, and a cam lever for opening and closing the tongue is pivotally connected so that a piston rod of a fluid pressure cylinder supported by the support member can be pivotally driven by the cam lever. And the piston rod of the cylinder moves back and forth to open and close the tongue by swinging the cam lever,
And a bone dissector having a positional relationship in which swing of the operating arm is interlocked via the cam lever.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bone exfoliating device used for exfoliating bone in bone-containing partial meat obtained by cutting pigs, cows, etc. according to a predetermined division.

[0002]

[Prior art]

 Conventionally, for example, in the case of pork shoulder meat, to separate the scapula from the meat, after separating the joint between the scapula and the forefoot, the worker holds the meat with one hand while also holding the scapula with the other hand. I take the method of peeling.

[0003]

[Problems to be solved by the device]

 However, the conventional manual work requires a considerable amount of force for the peeling work, and thus has the drawback that many workers hurt their shoulders and elbows, and countermeasures against it have long been desired. It is an object of the present invention to provide a power-driven, easy-to-operate bone dissector to maintain the health of workers.

[0004]

[Means for Solving the Problems]

 Therefore, according to the present invention, the support member supports the operating arm so as to be swingable from a substantially horizontal position to a standing position, and is provided with a presser member located near the distal end of the operating arm in the horizontal position. A tongue for grasping a bone is rotatably supported on the portion, and a cam lever for opening and closing the tongue is swingably connected to the piston rod of a fluid pressure cylinder supported by the supporting member on the cam lever. The piston rod of the cylinder is connected so as to be swingable, and the forward / backward movement of the piston rod causes a positional relationship that interlocks the opening / closing of the tongue by the swing of the cam lever and the swing of the operating arm via the cam lever. There is a bone peeler. An embodiment of the present invention will be described below with reference to the drawings.

[0005]

【Example】

 In FIG. 1, a support bar (1) composed of a rectangular frame member (1a) and a bar member (1b) connected to the lower end of the rectangular frame member (1a) is used as a supporting member of the present device. ), And one end of a T-shaped actuating arm (3) composed of a cross section web portion (3a) and a flange portion (3b) as shown in FIG. 6 at the lower end portion of the support member (1). The parts are swingably connected by a shaft (4). In this case, as shown in FIG. 6, the operating arm (3) uses one end of the web part (3a) as a connecting part with the shaft (4). , One end of the flange portion (3b) is cut off to form the cut end face on the stop portion (5), and the stop portion (5) is brought into contact with the receiving portion (6) at the lower end of the support material (1). By the contact, the swing angle of the operating arm with respect to the support member (1) is restricted to 90 degrees. (7) is a spring that elastically urges the actuating arm (3) in the opening direction with the support member (1).

As shown in FIGS. 2, 3 and 6, the distal end of the operating arm (3) has a pair of semi-circular arcs bent on a bracket (8) protruding from the lower surface of the flange (3b). The tongue arms (9), (9) of the base are supported by the shaft (10) so as to be openable and closable, and as shown in FIG. 5, a groove (of a width corresponding to the web portion (3a) from the boss portion (12)). 13) Extend the lever body (14) composed of two pieces by sandwiching it, and from the outer surfaces of the extended end portions of both component plates of the lever body (14), the width corresponding to the flange portion (3b). A cam plate (15) spaced apart from the left and right sides, and a cam lever (11) protruding from the cam plate (15) are slidably mounted on the web part (3a) from above on the groove (13), and both cams are attached. The arcuate cam surfaces of the plates (15) and (15) are passed through both sides of the flange portion (3b) and the above-mentioned tongue When the support member (1) is positioned above the arms (9) and (9), the intermediate portion of the lever body (14) is swung by the shaft (16) to the tip of the web portion (3a). It is pivotally supported on the same plane as the plane. (17) is a spring receiving rod having a cam plate of the lever body (14) fixed to the upper portion of the end of the spring, and other springs (18), (18) having one end connected to both ends of the rod (17). The ends are connected near the bases of the tongue arms (9) and (9) so that the cam surfaces of the cam plates (15) and (15) are always pulled to the crocodile side of the tongue arms (9) and (9). ing.

As a driving means for swinging the operating arm (3) and opening / closing the tongs, the upper end portion of the air cylinder (19) is swingable in the frame member (1a) of the support member (1). It is suspended and the lower end of the piston rod (20) of the cylinder (19) is connected to the boss (12) of the cam lever (11) by a shaft (21).

As shown in FIG. 1, the air cylinder (19) extends the entire stroke in a state where the operating arm (3) is opened at 90 degrees where the stop portion (5) and the receiving portion (6) are in contact with each other. At this time, the cam lever (11) swings and tilts counterclockwise as shown in FIGS. 1 and 2 to raise the cam plates (15) and (15), which causes the tongue arms (9) and (9) to swing. Pulling upward by pulling (18), (18) opens as shown in FIG. When the air cylinder (19) is contracted and driven in this state, the cam lever (11) immediately swings clockwise around the shaft (16) and the cam plates (15) and (15) cause the tongue arm (9) to move. Push down (9) and close as shown in Figure 3 (b).

As a meat pressing member at the time of bone detachment, one end of a presser bar (22) bent in a key shape is fixed to an intermediate part of the support member (1), and the other end of the presser bar is connected to the operating arm. When (3) is placed in the horizontal position, it hangs near the tongue arms (9), (9), and a meat pressing piece (23) is attached to the lower end of the hanging.

An air supply circuit to the air cylinder (19) is as shown in FIG. 7, and an air supply pipe (24) connected to an air source is branched into branch pipes (25) and (26), and one of The branch pipe (25) is connected to the air supply switching valve (27), and the other branch pipe (26) is connected to the mechanical valve (28) for switching the above switching valve (27). The pipes (29) and (30) are connected to the rod and head sides of the air cylinder (19) from (27), respectively, and the pipe (31) is connected from the mechanical valve (28) to the switching valve (27). Are connected.

The mechanical valve (28) is elastically urged to open by a spring, and an operating lever (32) for closing the valve against the spring is provided at one end of the presser bar (22). It is attached to a handle (33) that is connected to the.

The operation of the above example will be described together with a usage example. Place the shoulder meat (M), which has previously separated the indirect connection between the scapula (a) and the foot (b), on the work table, and then bend the grip (33) and presser bar (22) of the instrument. 1 and 2, the tongue arms (9) and (9) opened by the extension of the air cylinder (19) are fitted to the constricted portion of the scapula (a) as shown in FIGS. ) Is brought into contact with the upper end of the foot (b), and in that state, the operation lever (32) of the mechanical valve (28) is pushed to open the valve (28), and the air source air is supplied to the pipes (24), (26). ), (31) and acting on the switching valve (27) to switch the switching valve into communication between the pipe (25) and the pipe (29), whereby the air cylinder (19) shrinks, first of all At the beginning of the reduction, the cam lever (11) swings in the clockwise direction, and the cam plates (15), (15) cause the cam lever (11) to move. The arms (9) and (9) are closed to hold the constricted part of the scapula, and then the actuating arm (3) is swung up to the support member (1) in this state, whereby the scapula (a) is raised. Start up while peeling off the close contact with the meat.

When the desired peeling is completed, the push of the operation lever (32) is released to close the mechanical valve (28), and the air acting on the switching valve (27) passes through the pipe (31) to the atmosphere. Is discharged into the pipe, whereby the switching valve (27) is switched to the communication between the pipe (25) and the pipe (30), and the air cylinder (19) is extended to swing the operating arm (3) to the horizontal position. Then, when the air cylinder (19) further extends after reaching 90 degrees with respect to the support member (1), the cam lever (11) swings counterclockwise to open the tongue arms (9), (9), Release the scapula and prepare for the next peeling work.

[0014]

[Effect of device]

 The bone dissector of the present invention, of course, contributes to maintaining the health of the worker, but in operation, the bone is clamped by the tongs by driving to one of the fluid pressure cylinders, and the operation arm is moved upward. It is possible to automatically and continuously remove the bone by rocking, and after peeling, the fluidized cylinder is driven to the other side to return the peeled bone by rocking the operating arm downward and tong. It is possible to automatically and continuously release the holding of the bone by opening the shaft, and the work can be done smoothly and easily.

[Brief description of drawings]

FIG. 1 is a front view of a bone remover.

FIG. 2 is an enlarged view of a tip portion of an operating arm in FIG.

FIG. 3A is a sectional view taken along line III-III in FIG. (B) It is sectional drawing same as the above in the state which closed the tongue.

FIG. 4 is an enlarged perspective view of a piston rod tip portion of the air cylinder.

FIG. 5 is an enlarged perspective view of a cam lever.

FIG. 6 is an enlarged perspective view of a partially omitted operating arm.

FIG. 7 is an air supply circuit diagram.

[Explanation of symbols]

 1 Support Rod 3 Actuating Arm 9 Tong Arm 11 Cam Lever 19 Air Cylinder 20 Piston Rod 23 Meat Holding Piece

Claims (1)

[Scope of utility model registration request] 1. A support member supporting a working arm swingably from a substantially horizontal position to a standing position, and a meat pressing member located near the tip of the working arm in the horizontal position are provided, and the tip end portion of the working arm is provided. , A tongue for grasping a bone is pivotally supported so that the tongue can be opened and closed, and a cam lever for opening and closing the tongue is pivotally connected, and a piston rod of a fluid pressure cylinder supported by the support member is pivoted on the cam lever. A bone dissociator, which is drivably connected, and in which the piston rod of the cylinder advances and retreats to interlock the opening and closing of the tongue by the swing of the cam lever and the swing of the operating arm via the cam lever. .