JPH0446868Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a sieve frame fixing clamp that connects and fixes the upper and lower sieve frames in a vibrating sieve device in which vertical cylindrical sieve frames are stacked in multiple stages. .

[Conventional technology]

Conventionally, a device for fixing a sieve frame in the above-mentioned multi-stage vibrating sieve device was disclosed in Japanese Utility Model Publication No. 61-
There is a technique number 147. This prior art will be explained based on FIG. 5.

The upper outer peripheral edge of the sieve frame 101a located at the lower stage,
At the lower end outer peripheral edge of the sieve frame 101b located in the upper stage,
Fixing flanges 102a and 102b are provided in a protruding manner, and a sieve screen 103 is sandwiched between the flanges 102a and 102b. Said flange 1
A lever ring-shaped tightening latch 104 for clamping and fixing 02a and 102b is pivotally attached to the lower surface of the flange 102a of the lower sieve frame 101a. The tightening latch 104 has four links 104a, 104b, 1
It is composed of a four-node rotation chain that revolves around 04c and 104d and is connected in pairs, and the link 104
The upper surface of the upper flange 102b is pressed by a presser 104e provided at the tip of the flange 102b. The presser 104e has a male screw 104f formed in its body, and a female screw 10 at the tip of the link 104d.
4g, and by adjusting its protruding length, the tightening force of the flanges 102a and 102b can be adjusted.

[The problem that the idea aims to solve]

The above-mentioned conventional technology requires that the tightening latch 104 is pivotally attached to the flange 102b of the lower sieve frame 101b, that a four-bar rotation chain is used as the sieve frame mechanism, and that the tightening amount is adjusted. Presser 104
Since the structure is such that e is screwed together, there are the following problems.

First, it is difficult to effectively tighten the flanges 102a, 102b. That is, since the tightening latch 104 is pivotally attached to the flange 102a, it is always tightened at a fixed position, and when the flanges 102a and 102b are deformed due to long-term use, the tightening latch 104 is attached to the flange 102a, so that when the flanges 102a, 102b are deformed due to long-term use, the It is not possible to tighten at the optimum position. Further, the tightening force of the flanges 102a and 102b is
4e, the presser 104 is adjusted in advance.
It is impossible to obtain the best tightening force by determining the degree of protrusion of the flanges 102a, 102.
Even if you try to rotate the pusher 104e after tightening b, it is difficult due to the contact friction between the flange 102b and the lower surface of the pusher 104e, so in the end, the pressing and releasing operations are repeated several times to obtain the optimal tightening force. This results in poor workability.

Second, since the sieve frame 102b itself is provided with the tightening latch 104, the sieve frame 102b becomes heavy and becomes an obstacle to replacing the sieve screen 103.

Thirdly, since the sieve frame 102b is provided with the tightening latch 104, the sieve frame 102b becomes expensive, which is disadvantageous when only the sieve frame 102b is replaced.

Fourth, since each link 104a to 104d maintains a close mutual positional relationship, it is easy to break down even if one link is deformed, and maintenance is not easy.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention has a body part formed by drilling a through hole in the axial direction and having a protrusion protrude into the through hole, and a horizontal upper arm integrally protruding from the upper end side of the body part. and is slidably inserted into the through hole of the body, a male screw is cut into the upper half of the body so that the male screw protrudes from the upper surface of the body, and the lower half of the male screw is inserted into the through hole of the body. a sliding shaft formed with a guide groove that engages with the protrusion and guides the sliding movement in the axial direction; A slip ring is interposed between the horizontal lower arm located thereon and the male screw of the sliding shaft and the upper surface of the body, and its rotation causes the sliding shaft and the horizontal lower arm integrated with it to rotate. The present invention provides a clamp for fixing a sieve frame of a vibrating sieve device, which includes a tightening handle that is moved in the axial direction.

[Effect]

Lower the horizontal lower arm to widen the distance between it and the horizontal upper arm, sandwich the upper and lower flanges, and rotate the tightening handle to raise the horizontal lower arm. At this time, the horizontal lower arm rises straight because the protrusion fits into the guide groove of the sliding shaft and is guided. Then, the tightening handle is rotated with the flange held between both the lower horizontal arm and the upper horizontal arm, and both flanges are tightened with appropriate pressure to fix the upper and lower sieve frames.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a part of the multi-stage vibrating sieve device A in section, and shows a cylindrical base 1.
is permanently erected on the floor of the structure. Several coil springs 2, 2, . . . are arranged at regular intervals on the upper surface of this base 1. Coil spring 2, 2...
At the top of the screen are vertical cylindrical sieve frames 3a, 3b, 3c.
A vibrating sieve body 3 is provided, which is formed by stacking sieves in multiple stages, and a vibrating device 5 is attached to the lower surface of a support wall 4 located further below the sieve frame 3a in the lower stage. The vibration device 5 has an electric motor 6 fixed vertically with a mounting arm 7, and a weight 9 attached to an eccentric position of a rotary shaft 8 of the electric motor 6 that projects upward and downward.

On the other hand, the sieve frames 3a, 3b, 3c have flanges 10, 10, 10 respectively formed on the outer periphery of the opening on the upper surface, and skirts on the outer periphery of the opening on the lower surface of the upper and middle sieve frames 3b, 3c. Flanges 12, 12 each having a portion 11 are formed. Then, the flanges 10, 12 of the overlapping part of the upper and middle sieve frames 3b, 3c and the interruption and the overlapping part of the lower sieve frames 3a, 3b.
A sieve screen 13, a porous ball tray 14, and a packing 15 are interposed in between. The ball tray 14 is for receiving a large number of balls 16, 16..., and by vibrating the ball tray 14, the balls 16, 16... bounce and hit the bottom surface of the sieve screen 13. This prevents the sieve screen 13 from clogging.

In addition, the vibrating sieve device A includes a lid 17 with an open top that covers the top of the opening of the upper sieve frame 3c, and an outlet 1 that protrudes from the side surface of each sieve frame 3a, 3b, and 3c.
8, 18, 18, and the flanges 10, 12 of the overlapping part of the upper sieve frame 3c and the middle sieve frame 3b are attached between them to receive the powder and granules sieved from the upper sieve screen 13. and a funnel body 19 that guides the sieve to the center of the sieve screen 13.

The vibrating sieve device A has the above-described configuration, and when powder or granules are introduced through the opening of the lid 17 and the electric motor 6 of the vibrating device 5 is driven, the coil springs 2, 2 are moved by the rotational action of the weight 9. The entire vibrating sieve body 3 is vibrated through . . . and is sieved by the sieve nets 13, 13.

Thus, the sieve frames 3a, 3b, 3c and the lid 17 are fastened and connected by a sieve frame fixing clamp B (hereinafter simply referred to as a clamp). As shown in FIGS. 2 to 4, the clamp B has a through hole 21 formed in the axial direction, and the through hole 21
a body portion 23 having a protrusion 22 protruding therein;
A horizontal upper arm 24 integrally protrudes from the side surface of the upper end of the body part 23 and is slidably inserted into the through hole 21 of the body part 23, and a male thread 25a is cut in the upper half of the body part 23. The male thread 25a projects from the upper surface, and a guide groove 25b is carved in the lower half of the male screw 25a to engage the protrusion 22 in the through hole 21 and guide the sliding movement in the axial direction. axis 25
A horizontal lower arm 26 integrally protrudes from the lower end side surface of the sliding shaft 25 and located opposite to the horizontal upper arm 24, and a horizontal lower arm 26 that is screwed into the male screw 25a of the sliding shaft 25, and is screwed into the body portion 23. A tightening handle 28 is provided with a slip ring 27 made of fluorocarbon resin interposed between the upper surface and the tightening handle 28, which moves the sliding shaft 25 and the horizontal lower arm 26 integrated therewith in the axial direction by the rotation of the slip ring 27. Become.

The protrusion 22 facing into the through hole 21 is formed of a screw, and the amount of protrusion into the through hole 21 can be adjusted. Therefore, by tightening the sieve frames 3a, 3b, . . . so that the projections 22 are brought into strong pressure contact with the guide grooves 25b, loosening of the clamp B due to vibration can be prevented.

On the lower surface of the distal end of the horizontal upper arm 24 and the upper distal end surface of the horizontal lower arm 26, there are synthetic resin retainers 29a, 29, respectively.
b is fixed with a screw. Horizontal upper arm 24 temporary 2
9a is flat for the time being, but a linear protrusion 30 passing through the center of the temporary seat 29b of the horizontal lower arm 26 is formed on the present surface of the temporary seat 29b. Flange 1 of the top opening part
It fits into the groove 31 on the lower surface of the clamp B to prevent the clamp B from shifting.

The tightening handle 28 has a female screw 28a formed in the shape of a cap nut to be screwed into the male screw 25a of the sliding shaft 25. By closing the upper part of the female screw 28a, powder does not enter into the screw. .

Next, the tightening process using the clamp will be explained with reference to FIG. 4.

When the tightening handle 28 is rotated in the loosening direction, the sliding shaft 25 is lowered, and the horizontal lower arm 26 is lowered together with the sliding shaft 25, thereby increasing the distance between it and the horizontal upper arm 24. At this time, the sliding shaft 25 is guided and lowered by the engagement between the guide groove 25b and the projection 22, so that no deviation occurs in the vertical relationship between the horizontal upper arm 24 and the horizontal lower arm 26. The distance between the horizontal upper arm 24 and the horizontal lower arm 26 is made wider than the height at which the flanges 10 and 12 overlap, and the flange 10,
Position 12. Then, when the tightening handle 28 is rotated in the tightening direction, the sliding shaft 25 rises straight up, and the horizontal lower arm 26 rises together with it, and the protruding line 30 of the stopper 29b fits into the grooved line 31 of the lower flange 10. , the temporary seat 29a of the horizontal upper arm 24 and the horizontal lower arm 26
The flanges 10 and 12 are sandwiched between the dowels 29b. If the tightening handle 28 is further rotated in the tightening direction in this state, the flanges 10 and 12 will be brought into pressure contact with each other, so it is only necessary to turn the tightening handle 28 until the desired tightening strength is achieved. In this case, tightening handle 2
Since the slip ring 27 is interposed between the gripper 8 and the body portion 23, the frictional resistance of the tightening handle 28 is low, and the tightening handle 28 can be rotated with less force.

In this way, clamp B is attached to flanges 10,1
If a plurality of sieve frames 3c are attached at appropriate positions on the outer periphery of the screen 2, the upper and lower sieve frames and the upper sieve frame 3c and the lid body 17 are integrally connected.

Moreover, in order to separate the sieve frames 3a, 3b, and 3c, the operation opposite to the above may be performed.

[Effect of idea]

As described above, according to the clamp of the present invention, since the sieve frame and the clamp are completely separate, it is possible to select any optimum position on the outer circumference of the flange for tightening, and it is possible to tighten by adjusting the amount of rotation of the tightening handle. Since the degree of tightening can be easily adjusted as appropriate, reliable tightening is possible without creating a gap between the upper and lower flanges.

Furthermore, since the sieve frame and the clamp are separated, the weight of the sieve frame can be reduced, making it easier to replace the sieve screen.

Furthermore, since the sieve frame and clamp are separate pieces, the cost of the sieve frame is reduced, which is advantageous when replacing the sieve frame due to damage, etc. Moreover, the simple structure means that there is no failure, making it extremely practical. It is excellent.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of a vibrating sieve device partially shown in cross section, and FIG.
3 is an exploded perspective view of the clamp, FIG. 4 is a sectional view of the main part showing a tightened state, and FIG. 5 is a partially sectional front view of the main part showing the prior art. 21...Through hole, 22...Protrusion, 23...Body part, 24...Horizontal upper arm, 25...Sliding shaft, 25a
... Male thread, 25b ... Guide groove, 26 ... Horizontal lower arm, 27 ... Slip ring, 28 ... Tightening handle, A ... Vibrating sieve device, B ... Sieve frame fixing clamp.

Claims (1)

[Scope of Claim for Utility Model Registration] A body portion having a through hole drilled in the axial direction and a protrusion protruding into the through hole; a horizontal upper arm integrally protruding from the side surface of the upper end of the body portion; It is slidably inserted into the through hole of the body, a male screw is carved in the upper half of the body so that the male screw protrudes from the upper surface of the body, and a projection in the through hole is formed in the lower half of the body. a sliding shaft formed with a guide groove that engages with the shaft and guides sliding in the axial direction; and a sliding shaft that integrally protrudes from the lower end side surface of the sliding shaft and is located opposite to the horizontal upper arm. A slip ring is interposed between the horizontal lower arm and the male thread of the sliding shaft and the upper surface of the body, and its rotation causes the sliding shaft and the horizontal lower arm integrated with it to move in the axial direction. A clamp for fixing a sieve frame of a vibrating sieve device, comprising a tightening handle for moving the sieve frame.