JPH0127059Y2 - - Google Patents

Description

[Detailed description of the invention] This type of device is conventionally known in which a stand is erected on a frame, a mounting bracket is provided with a weighing hopper, a pool hopper, etc. so as to be in sliding contact with the stand, and the stand and the mounting bracket are screwed together. The mounting bracket was tilted relative to the stand by screwing it in with a wing nut and loosening the wing nut, but this was troublesome as the stand had to be supported manually when tightening or loosening the wing nut. It was hot. The present invention is an improvement on this point, and the present invention relates to a locking device for a stand.

That is, in the present invention, the stand is rotatably pivoted to a mounting bracket that is erected by an appropriate means,
A stand tilt regulation lever for switching the tilt angle of the stand is pivotally attached to the stand, and a locking lever is also pivotably pivoted to the stand, and the mounting bracket has a control lever that controls the amount of movement of the regulation lever. a pin 36 that is press-fitted to regulate the
It is an object of the present invention to provide a locking device for a stand, in which the locking pins of the locking lever are respectively provided in a protruding manner, so that the stand can be easily and quickly tilted at a predetermined angle when locking and releasing the lock. It is.

Hereinafter, an embodiment of the present invention will be described in which, for example, a combination of a plurality of weight values obtained by weighing objects to be weighed with a plurality of automatic weighing machines is performed to obtain a combination of a predetermined weight or a value closest to it, and this combination is A case where the present invention is applied to a so-called combination calculation type automatic weighing device that discharges objects to be weighed corresponding to the following will be explained based on the drawings.

1 to 3, reference numeral 1 denotes a dispersion table formed in a conical shape. This dispersion table 1 is mounted and supported on an electromagnetic vibration device 3 via a plurality of leaf springs 2 to generate helical reciprocating vibration. let it happen. A plurality of supply troughs 4 are arranged radially around the outer circumference of the dispersion table 1, and each supply trough 4 has its rear end positioned below the dispersion table 1 so as not to come into contact with the dispersion table 1. Reference numeral 5 denotes an electromagnetic vibration device for vibrating each supply trough 4. Reference numeral 7 designates an electromagnetic vibration device for vibrating each supply trough 4, and 7 supports the supply trough 4 by attaching and supporting the electromagnetic vibration device 5 via a plurality of plate springs 6 which are stacked on top of each other. This sensor 7 is an optical sensor consisting of a light emitter and a light receiver (not shown in the drawing). This sensor 7 detects the amount of the object to be weighed on the dispersion table 1, and transfers the object from the supply device (not shown) to the dispersion table 1. Controls the supply of materials. Reference numeral 8 denotes a circular support stand fixedly attached to the frame 9 by appropriate means, and the electromagnetic vibration device 3,
Install 5.

Reference numeral 10 denotes a weighing machine, which includes a pool hopper 11 located at the bottom of the tip of the supply trough 4, a weighing hopper 12 located at the bottom of the pool hopper 11, and a weighing mechanism for weighing the object to be weighed in the hopper 12. The drive unit 16 supports the hoppers 13 and opens and closes the hoppers 11 and 12 using lever mechanisms 14 and 15. There is. 1
7 is an inverted truncated conical lower chute attached to the frame 9 via brackets 18 and 19; 20 is a collective chute; 21, and one or more weighing hoppers 12 of each weighing machine 10 are provided at a predetermined position above the upper end portion 21a of each single chute 21. And each weighing machine 10
The objects to be weighed discharged from the weighing hopper 12 are collected in the collecting chute 20 and the lower chute 17, and are discharged to a bucket conveyor or an automatic packaging machine via a timing hopper (not shown).

Reference numeral 22 denotes a stand of a predetermined shape that supports the drive unit 16 of the weighing machine 10, and this stand 22 is connected to a mounting bracket 23 erected on the frame 9.
The pool hopper 11 and the weighing hopper 12 are rotatably mounted upright on a pivot 24 so that they can be tilted outward at a predetermined angle during cleaning, etc., and the pool hopper 11 is attached to the upper end thereof. A guide plate 25 is attached to the upper end surface to prevent objects to be weighed from falling from the supply trough 4 to the outside of the pool hopper 11. On the outer surface of the lower end of the stand 22, as shown in FIGS. 2 and 3, a stepped portion 27 for switching the tilting angle of the stand 22 is formed at symmetrical portions on both sides of the outer surface along the longitudinal direction, leaving a tip 26a. A stand tilting regulation lever 28 having an elongated hole 26 with a predetermined length is pivotably supported by a pivot pin 29 and is supported and pivoted in a direction perpendicular to the stand 22, and is attached to the inner surface of the lower end and the regulation lever 28. A substantially L-shaped locking lever 31 having a locking claw portion 30 at the tip is rotatably attached to a predetermined position above 28 by a pivot pin 32, and a spring 33 is attached to the pivot pin 32. The locking lever 31 is wound so that one end thereof is engaged with the inner surface of the locking lever 31 and the other end is engaged with the protruding pin 32.
A biasing force is always applied in the locking direction. The mounting bracket 23 has a large-diameter engagement step 35 at its tip at a position shifted approximately horizontally from the pivot point of the regulation lever 28, and a pin 36 for regulating the amount of movement of the regulation lever 28. A spring 37 is provided so as to protrude outwardly, and a spring 37 is compressed and interposed between the inner surface of the regulating lever 28 and the outer surface of the mounting bracket 23 to constantly apply an outward pressing force to the regulating lever 28. Further, a locking pin 38, on which the locking lever 31 locks, is protruded from a predetermined portion of the inner surface of the mounting bracket 23. Then, the elongated hole 26 of the regulation lever 28 is slidably fitted into the pin 36, and the back stepped surface 39 of the engagement stepped portion 35 is pressed against the stepped portion 27 of the elongated hole 26 by the pressing force of the spring 37. At the same time, the locking claw portion 30 of the locking lever 31 is removably fitted into and locked to the locking pin 38 by the spring force of the spring 33. Reference numeral 40 denotes a stopper member fixed to the inner surface of the stand 22, and the stopper member 40 allows the locking lever 3 to be
Rotation in the locking direction of 1 is restricted to a constant level.

Next, the locking operation of the stand 22 that supports the drive section 16 and the tilting operation when the lock is released will be explained as follows.

When the stand 22 is tilted outward, the locking lever 31 hits the stopper member 40 and rotation in the locking direction is restricted. Then, when the stand 22 is rotated inward about the pivot 24, the locking lever 31 locks into its locking claw portion 3.
After the arc-shaped outer end surface of 0 hits the locking pin 38 and is gradually pushed up and rotated in the opposite locking direction,
The spring force of the spring 38 causes the stand 22 to momentarily rotate in the locking direction, and the locking claw portion 30 fits into and locks the locking pin 38, and the stand 22 stands up vertically. At the same time, the regulation lever 28 is pushed inward as its elongated hole 26 is guided by the pin 36, and the pin 36 is positioned at the other end 26b of the elongated hole 26. At this time, the engagement step 35 of the pin 36 is fitted into the step 27 of the elongated hole 26 due to the pressing force of the spring 37 against the regulating lever 28, and the step 27 and the step surface 35 of the engagement step 35 fit into the step 27 of the elongated hole 26. The regulation lever 28 moves while slidingly touching.

When cleaning the pool hopper 11 and weighing hopper 12, etc., if you want to tilt the vertical stand 22 outward, manually push the locking lever 31 against the spring force of the spring 33. After rotating in the locking direction to release the locked state with the locking pin 38, the stand 22 is rotated outward about the pivot 24 as a fulcrum. With this rotation, the regulation lever 28 pivoted to the stand 22 moves outward while being guided by the pin 36, since its elongated hole 26 and the pin 36 are slidably fitted as described above. . At this time, the engaging step portion 35 of the pin 36
The stepped surface 39 of the spring 3 is attached to the stepped portion 27 of the elongated hole 26.
It is the same as above that the pressure contact is made by the pressing force of 7. Then, as the regulating lever 28 moves outward, the pin 36 is moved to the one end 27 of the stepped portion 27 of the elongated hole 26.
When reaching point a, the pin 36 is positioned at one end 27a of the stepped portion 27 due to the step with the tip 26a of the elongated hole 26, so that the stand 22 is moved at a predetermined angle corresponding to the amount of movement of the regulating lever 28. It rotates outward by a certain amount and is locked and fixed in a predetermined tilted position. The stand 2 is thus locked and fixed in a predetermined tilted position.
2, apply an external force to the regulating lever 28 inward, that is, toward the mounting bracket 23, to prevent the engagement between the stepped portion 27 of the elongated hole 26 and the pin 36 against the pressing force of the spring 37. When the joint part 35 is released from pressure contact with the step surface 39 and an external force is further applied outward to the stand 22 in this state, the regulation lever 28 is further moved outward by this external force.
The pin 36 was positioned at one end 27a of the step 27 of the elongated hole 26 by the pressing force of the spring 37.
is positioned by rising from the stepped portion 27 to the tip 26a of the elongated hole 26 against the pressing force, and thereby the stand 22 is positioned from the one end 27a of the stepped portion 27 to the elongated hole 2.
Rotate outward about the pivot 24 by an angle corresponding to the amount of movement relative to the pin 36 to the tip 26a of the pin 6,
Even at a tilting angle larger than the tilting angle of the first stage, it is locked and fixed in a predetermined tilted posture.

Also, when you want to return the stand 22 to its original position, the stand 22 that is tilted outward
2 is rotated inward about a pivot 24 as a fulcrum. As a result, the regulation lever 28 pivotally connected to the stand 22 is guided by the pin 36 and moves inward, and when the pin 36 is located at one end 27a of the step 27 of the elongated hole 26, the pressing force of the spring 37 causes the pin to move inward. 36 engagement step portions 35 fit into the step portions 27 of the elongated hole 26, and the stand 22 is held at the first tilt angle. When the stand 22 is further rotated inward, the regulation lever 28 is guided by the pin 36 and moved inward, since the elongated hole 26 and the pin 36 are slidably fitted together as described above. , and the pin 36 is located at the other end 26b of the elongated hole 26. At this time, as described above, the step 27 of the elongated hole 26 is in pressure contact with the step surface 39 of the engagement step 36 of the pin 36 due to the pressing force of the spring 37.
7 and the step surface 39 of the engagement step portion 35 are in sliding contact with each other while the regulating lever 28 moves. At the same time, due to the inward rotation of the stand 22, the locking lever 31 pivoted to the stand 22 causes its locking claw portion 30 to engage the locking pin 38 by the spring force of the spring 33 in the manner described above. The stand 22 is fitted and locked, and the stand 22 stands up.

In addition, although the above-mentioned Example explained the case where this invention was applied to an automatic weighing device, it is not limited to this, and this invention can be applied to various apparatuses.

As explained above, in the present invention, a stand is pivotably mounted to a mounting bracket erected by an appropriate means, and a stand tilting regulation lever for switching the tilting angle of the stand is attached to the stand. At the same time, the locking lever is also pivotally connected so as to be able to swing freely, and the mounting bracket includes a pin 36 that presses and engages in order to regulate the amount of movement of the restriction lever to a constant level, and a pin 36 that engages with the locking lever. Since the retaining pins 38 are provided in a protruding manner, the stand can be locked or unlocked in one operation very simply and easily. Furthermore, it is possible to change the tilting angle when the stand is unlocked, which is extremely convenient, and has the effect of facilitating internal inspection, maintenance, and cleaning of the machine.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted explanatory diagram showing an example of an automatic weighing device to which the present invention is applied, Fig. 2 is a perspective view of the main parts of the device of the present invention, and Fig. 3 is a cross-sectional explanation showing the installation state of the regulation lever. It is a diagram. 22...Stand, 23...Mounting bracket,
26...Elongated hole, 27...Stepped portion, 28...Stand tilting regulation lever, 30...Latching claw portion, 31...Latching lever, 36...Pin, 38...Locking pin.

Claims (1)

[Scope of utility model registration request] A stand is rotatably pivotably mounted to a mounting bracket erected by an appropriate means, and a stand tilting regulation lever for switching the tilting angle of the stand is pivotally pivotably mounted to the stand, and a locking lever is pivotably mounted to the stand. The mounting bracket is provided with a pin 36 and a locking pin 38 of the locking lever, respectively, which are press-fitted and engaged in order to restrict the amount of movement of the restriction lever to a constant value. Features a stand locking device.