JP2504342Y2 - Screw attachment / detachment device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is applied to a liquid filling device, a bottle washing machine, a capper, a labeler, etc. When a screw of a screw conveying device is replaced by changing a container to be filled, The present invention relates to a screw attaching / detaching device configured to easily perform this.

[Prior Art] As a support and a fixing device at the time of exchanging a screw applied to a liquid filling device, a bottle washing machine, a capper, a labeler, etc., a driven side support part that detachably supports a driven side end part of a screw body A hollow connecting shaft removably attached to the driving side end of the screw body, a drive shaft having a tip portion inserted into the hollow connecting shaft, and a locking ball loosely fitted in a through hole of the hollow connecting shaft, Conventionally, there has been known one provided with a sleeve that moves in the axial direction on the outer peripheral surface of the hollow connecting shaft to move the locking ball into and out of a recess provided in the outer peripheral surface of the drive shaft (actual flat blade 1- 126322).

[Problems to be solved by the present invention] However, in the above-mentioned conventional technology, work such as screwing is inevitably necessary in order to prevent misalignment of the three members of the screw, shaft, and bearing, and horizontal displacement, which is complicated. There was a problem that it was necessary to attach and detach, and measures against this were not sufficient.

In consideration of this point, the present invention eliminates the work of centering, screwing, etc. with a simple structure, and incorporates a bearing and a shaft on the screw side and a fixed side on the fixed side so that the attaching and detaching time can be greatly reduced. It is an object of the present invention to provide a screw attaching / detaching device provided with a groove for receiving this shaft and an eccentric fixed type shaft for preventing the shaft from protruding from the groove.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a bearing and a fixing pin with a groove at the screw end, and a fixing pin with a groove at a fixed arm for fixing the screw end. A U-shaped groove for accommodating the lock rod is provided, a lock rod is reciprocally and rotatably installed in the hole of the fixed side arm, and the shaft center of the lock rod tip is eccentric with the shaft center of the rotation shaft of the lock rod. The configuration that allows it to be adopted.

[Operation] By adopting the above configuration, the present invention has a simple configuration and can eliminate centering and screwing work only by reciprocating and rotating movements of the lever, and can shorten screw replacement time. .

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 schematically show the state of the screw attaching / detaching device at the time of screw replacement, in which the fixed side arm 4 supports the lock rod 3 slidably and rotatably, and The lock rod 3 supports the fixed pin 2 with a groove of the screw S in an open state. Further, the other end of the screw S has an engaging hole for engaging with the clutch, the screw S is inserted together with the clutch, and the lever 6 is pushed forward and slid to engage with the lock rod 3,
Further, the lever 6 is turned 180 ° to lock the lever 6 on the lock side.

Next, referring to FIG. 4, the fixed side arm 4 of the device for attaching / detaching the screw S will be described. A hole 8 for a lock rod is formed in an arm body 7 having an appropriate shape such as a rectangle, and the lock rod 3 is inserted in the hole 8. (Not shown) is inserted so that it can be slid and swiveled, a U-shaped groove 5 for engaging the grooved fixing pin 2 is provided at one end, and the other end can be slid parallel to the axis of the lock rod 3. An opening groove 9 (not shown) is formed, and a fixing groove is formed at a position just when the lock rod 3 is slid and rotated so as to lock the lock rod 3 in a direction perpendicular to the axial center of the lock rod 3. Formed 10.

More specifically, as shown in FIGS. 5 to 7, a fixing pin 2 with a groove is provided at the end of the screw S via a bearing 1 and a fixed arm 4 to which the end of the screw S is attached. Is provided with a U-shaped groove 5 in which the grooved fixing pin 2 is accommodated. A lock rod 3 is incorporated in the fixed arm 4 so as to be able to slide in the front-rear direction and rotate. An eccentricity of several mm is formed between the shaft center of the tip portion a of the lock rod 3 and the shaft center of the lock rod 3 that slides and rotates in the shaft hole b formed in the fixed arm 4. . This is the one that is most eccentric when it is in the fixed state, so that the lock's interference is increased. A lever 6 is fixed to the rear end of the lock rod 3.

Explaining the attachment / detachment operation of this embodiment, the lever 6 is slid up and down through an opening side (a groove parallel to the axis of the lock rod 3 to engage the grooved fixing pin 2). When it is rotated and retracted to the state of being retracted from the U-shaped groove 5, the U-shaped groove 5 of the fixed arm 4 is opened and the grooved fixing pin 2 provided on the screw S via the bearing is easily U-shaped from above. It can be inserted into the groove 5. Further, the lever 6 is pushed in and rotated to the lock side (fixed side) in alignment with the groove 11 at the tip of the grooved fixing pin 2. This rotates 180 ° in the fixing groove 10 in the direction perpendicular to the axis of the lock rod 3, and the eccentricity of the axis described above causes the grooved fixing pin 2 to move into the U-shaped groove 5 at the maximum eccentric shimiro. Can be strongly fixed to.

[Effects of the Invention] The present invention can obtain the following effects based on the above configuration.

(1) It is not necessary to align the shaft and the bearing, and the time required for attachment / detachment can be reduced.

(2) Fixing time can be reduced because it can be fixed by pushing in and rotating half a turn instead of locking with screws or the like.

(3) The fixing device and the bearing are simplified, resulting in cost reduction.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a state when a screw according to an embodiment of the present invention is mounted, and FIG. 2 is a schematic explanatory view showing a state where a screw according to an embodiment of the present invention is fixed. FIG. 3 is a side view of FIG. 2, FIG. 4 is a schematic explanatory perspective view of a fixed side arm which is an embodiment of the present invention, and FIG. 5 is a groove of a screw which is an embodiment of the present invention. FIG. 6 is a schematic sectional plan view showing a state in which the fixing pin is fixed, FIG. 6 is a side view of FIG. 5, and FIG. 7 is a schematic explanation showing engagement between the groove portion of the grooved fixing pin and the tip portion of the lock rod. It is a figure. S …… Screw 1 …… Bearing 2 …… Fixed pin with groove 3 …… Lock rod 4 …… Fixed arm 5 …… U-shaped groove 6 …… Lever 7 …… Arm body 9 …… Opening groove 10 …… Fixing groove 11 …… The groove on the tip of the fixing pin with groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 62-96010 (JP, U) Fukai Hei 1-126322 (JP, U) Shoko 45-12482 (JP, Y1)

Claims (1)

(57) [Scope of utility model registration request] 1. A bearing and a fixing pin with a groove are provided at the end of the screw, and a U-shaped groove for accommodating the fixing pin with the groove is provided at a fixed arm for fixing the end of the screw, and a hole of the fixed arm is provided. Is a reciprocating and rotatable lock rod, and the shaft center of the lock rod tip is eccentric with the shaft center of the rotating shaft of the lock rod.