JPH0744997Y2 - Powder adhesion measuring device - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention compresses powder to form a test piece, and pulls the test piece to produce a fracture surface. The present invention relates to an improvement of a powder adhesive force measuring device for measuring a binding force between solid particles constituting a body.

[Prior Art] When granulating / molding powder into pellets or granules, a binder is added to the powder to generate a binding force between solid particles. In this case, the binder to be added is selected to be suitable for each product to be granulated / molded, and
The amount added is set so as to suit the properties of the product. From this, it becomes essential to measure what characteristics the binder-added powder is adjusted to. Then, for this purpose, the powder prepared by adding the binder is filled in a split cell for a tensile test, which is a tubular shape whose axial direction is the vertical direction and which is vertically separated from the upper and lower intermediate split surfaces. By compressing, a test piece whose outer peripheral surface is in close contact with the inner wall surface of the divided cell is formed, and by pulling this divided cell at the dividing surface as a boundary, a fracture surface is generated in the compressed / formed test piece. The test is conducted to measure the tensile force up to.

By the way, the powder adhesive force measuring device used in this manner is, in the conventional device, as shown in FIG. 1, separated from the upper and lower intermediate dividing surfaces 10 of the body part vertically. A cylindrical divided cell 1 in which an upper half portion 1a and a lower half portion 1b, which are separately formed, are joined together so as to be separable from each other, a divided cell mounting base 2 for mounting the same, and a motor. A compression device A including a compression bar 3 that is moved up and down with respect to the inner cavity of the divided cell 1 placed on the divided cell mounting table 2 by the operation of M.
As shown in FIG. 2, the set table 4 for holding the lower end side of the divided cell 1 and setting it on the table surface, and the upper end side of the divided cell 1 fixedly set on the set table 4 are held between them. The tension device B is composed of a clamp 5 that is moved up and down by the operation of the motor M, and the compression device A and the tension device B are separately configured.

[Problems to be solved by the invention] For this reason, when performing a powder tensile test, the powder to be inspected is filled in the inner cavity of the divided cell 1 set on the divided cell mounting table 2 of the compression apparatus A. Then, the compression bar 3 is lowered by the operation of the motor M and compressed until the pressure detected by the pressure sensor S1 attached to the compression bar 3 reaches a predetermined pressure. Forms a rod-shaped test piece P in close contact with the inner wall surface of the divided cell 1 in the divided cell 1, removes this test piece P from the mounting table 2 together with the divided cell 1, and sets the upper surface of the setting table 4 of the tension device B. It is necessary to perform an operation of assembling the clamp 5 of the tension device B on the upper end side of the divided cell 1 before the tensile test is performed, and the vibration applied to the divided cell 1 during this operation. The test piece P breaks due to , I have come up with a problem to waste the molding of the test piece P.

[Purpose] The present invention has been made in order to solve this problem that has occurred in the conventional means.
Powder test piece P compressed / molded in divided cell 1
The pulling device B can be easily installed without causing breakage.
The purpose of the present invention is to provide a new means by which the tensile test of this powder can be carried out accurately and efficiently so that it can be assembled and set.

[Means for Solving the Problem] In the present invention, as means for achieving this object, the airframe is provided with a compression device for moving the compression bar up and down by the operation of the lifting mechanism and a clamp by the operation of the lifting mechanism. An elevating tensioning device is mounted side by side in a lateral direction, and a divided cell mounting table is mounted below them so as to be laterally movable between a lower position of the compression device and a lower position of the tensioning device. Then, a lateral moving device for moving it is connected, and the lower end side of the compression bar which is vertically cylindrical in the axial direction and which is raised and lowered by the elevating mechanism is removably inserted into the divided cell mounting table. A divided cell is formed by the dividing surfaces at the upper and lower intermediate positions of its body so that it can be separated into an upper half portion and a lower half portion, and placed.
Further, the present invention provides a powder adhesion measuring device characterized in that the clamp of the pulling device is formed in a shape that fits with an engaging flange part formed in the upper half of the divided cell.

Example Next, an example will be described in detail with reference to the drawings. The same reference numerals are used for the constituent members having the same effects as those of the conventional means.

FIG. 3 is a schematic perspective view of the whole of the powder adhesion measuring device according to the present invention before the divided cells 1 are set, and FIG. In the figure, a is a machine body, b is a base mounted on the body a, c is a supporting machine frame erected on the base b, d is a split cell mounting table for supporting the split cell 1, e is a lateral moving device that moves the divided cell mounting table d to the left and right, A is a compression device that includes a vertically moving compression bar 3 and an elevating mechanism 6 that vertically moves it, and B holds the upper end of the divided cell 1. Clamp 5
And a pulling mechanism 7 for pulling it up.

On the upper surface of the divided cell mounting table d, a fitting portion 80 for fitting and holding the lower end side of the divided cell 1 is formed.
Further, the divided cell mounting table d is supported by guide members 81, 81 horizontally provided on the upper surface of the platform b of the machine body a so as to freely slide in the left and right directions.

The lateral movement device e uses the divided cell mounting table d as a guide member 81.
A screw rod 83, which is for laterally moving along the guide member 81, is arranged on the base b in parallel with the guide member 81, and is axially supported by the shaft supporting members 82, 82. A motor M1 which penetrates the female screw part and has its screw rod 83 arranged on the base b.
By conducting to the output shaft of the motor M1 to rotate the motor M1 forward and backward by a desired amount, the divided cell mounting table d is guided by the guide member.
It is configured to move laterally to the left or right along 81 as desired.

As shown in FIG. 6, this lateral movement device e stretches a chain belt 84 below the guide member 81 that guides the divided cell mounting table d so as to endlessly rotate in the left-right direction by driving the motor M1. By mounting the chain belt 84 on the divided cell mounting table d and driving the motor M1 in the forward and reverse directions to rotate the chain belt 84 in the forward and reverse directions, the divided cell mounting table d is moved to the left and right. It may be configured to move a desired amount of movement in any direction, and may be configured appropriately.

The compression device A is a normal device including a compression bar 3 that moves up and down and an elevating mechanism 6 that moves the compression bar 3 up and down. The compression bar 3 is a pair of right and left provided on the front side of the support frame c. A sliding member 31 is supported on the vertical guide members 30, 30 so as to freely slide up and down, and a lower end side of the sliding member 31 is supported so that the lower end side of the compression bar 3 projects downward. Moreover, the support is a support via a pressure sensor S1 (load sensor) so that the pressure applied to the compression bar 3 can be detected.

Then, when the compression bar 3 compresses the powder filled in the inside of the division cell 1 around the compression bar 3, the division cell 1 is pressed from above to be pressed against the division cell mounting table d. A ring-shaped pressing member 32 is arranged, and is supported by a ring-shaped mounting member 34 supported by a stay 33 hanging from the lower surface of the sliding member 31 so as to be able to move up and down via a spring 35.

The elevating mechanism 6 arranges a screw rod 60 parallel to the upper and lower guide members 30 on the front surface of the support machine frame c, and rotatably supports a stay 61 provided on the support machine frame c. Female screw 62
, The screw rod 60 is penetrated through, and the lower end side of the screw rod 60 is integrally connected to the upper surface of the central portion of the sliding member 31, and the female screw 62 is integrally formed with a conductive pulley 63 on the outer periphery thereof. The transmission pulley 63 is fixedly attached to the output shaft of the motor M2 mounted on the rear surface side of the support frame c via the transmission belt 64, and the motor M2 is rotated normally or reversely to rotate the female screw 62. Is rotated up and down to move the screw rod 60 up and down together with the sliding member 31, so that the compression bar 3 is moved up and down.

The compression device A constituted by this is configured such that the divided cell mounting table d, which is moved left and right by the lateral movement device e described above, is located at the right end side in FIGS. It is arranged so as to be located above d.

The tension device B is composed of a clamp 5 that holds the upper end side of the divided cell 1 and a lifting mechanism 7 that raises and lowers it.
Then, as shown in FIG. 4, the clamp 5 thereof is formed in the shape of a dovetail groove into which the engaging flange portion 11 provided on the upper end side of the divided cell 1 is fitted in a side view, and the above-mentioned support is provided. On the front side of the machine frame c, the guide members 81 and 81 are arranged at the upper position of the divided cell mounting table d in a state where the guide members 81 and 81 are moved to the left end side by the lateral movement device e
This is hung and supported by a sliding member 51 slidably supported by a vertical guide member 50 provided on a support frame c via springs 52, 52.

Further, the lifting mechanism 7 of the tensioning device B has the above-mentioned supporting machine frame c.
On the rear surface side, a screw rod 70 formed similarly to the screw rod 60 of the elevating mechanism 6 of the compression device A is vertically arranged and rotatably attached to the stays 71, 71 provided on the supporter frame c. It is threadedly penetrated into a female screw 72 that is axially supported, the lower end of the screw rod 70 is integrally connected to the upper surface of the above-mentioned sliding member 51, and the transmission pulley 73 is integrally or integrally formed on the outer periphery of the above-mentioned female screw 72. And the transmission pulley 73 is transmitted to the output shaft of the motor M3 mounted on the rear surface side of the supporting machine frame c via the conduction belt 74 to rotate the motor M3 in the forward and reverse directions. , Female thread 72
By rotating the screw rod 70 up and down,
51 and the clamp 5 are moved up and down (6th
Figure).

Then, the tension pressure is detected by a laser type displacement detecting the amount of upward displacement of the upper half portion 1a of the divided cell 1 which emits the laser beam L and is supported by the clamp 5 above the sliding member 51 that moves up and down. A total of S2 is provided so that the detection can be performed. In this laser type displacement meter S2, as in the embodiment shown in FIG. 6, a pressure sensor S3 for detecting the load in the pulling direction is provided on the lower surface side of the sliding member 51, and the suspension rod 53 is connected thereto. Then, the clamp 5 may be hung on the suspension rod 53 via the springs 52, 52, and the pulling pressure may be detected by the pressure sensor S3.

Further, as shown in FIG. 5, the divided cell 1 has a tubular shape with the axial direction being the vertical direction, and the inner diameter of the divided cell 1 allows the lower end side of the compression bar 3 to be raised and lowered by the elevating mechanism to freely move. The upper half part is formed to have a diameter to be fitted and is divided into two parts up and down from the dividing surface 10 provided at the upper and lower intermediate parts of the body part.
1a and the lower half 1b are usually formed separately, but the lower half 1b is made of heavy stainless steel, and the upper half 1a is made of a light synthetic resin material. There is. Then, on the upper end side of the upper half 1a thereof, the above-mentioned clamp 5
An engaging collar portion 11 is formed to be fitted to the inner peripheral surface of the lower half portion 1b, and an inner cylinder 12 formed of a synthetic resin material forming the upper half portion 1a is fitted to the inner peripheral surface of the lower half portion 1b. is there. Further, a bottom lid 13 is vertically slidably dropped on the bottom of the inner cavity of the lower half portion 1b, and is locked to a step portion 14 mounted on the bottom portion of the lower half portion 1b. ,further,
After the powder is filled, the dropping lid 15 is slidably fitted on the upper surface of the powder.

The embodiment apparatus configured as described above operates as follows.

To measure the adhesive force of the adjusted powder, a predetermined amount of the powder is filled in the inner cavity of the divided cell 1 in which the upper half 1a is overlaid on the lower half 1b. . Then, the divided cell 1 in this state is fitted into the fitting portion 80 provided on the upper surface of the divided cell mounting table d.

As a result, the divided cell 1 is held on the upper surface of the divided cell mounting table d by the weight of the lower half portion 1b thereof.

At this time, the divided cell mounting table d operates the switch SW1 provided on the control petal on the front surface of the machine body a as shown in FIG. It is located at the stroke end to the right of the range of movement by the lateral movement device c. That is, the split cell 1 to be supported is in a state position correctly positioned below the compression bar 3 of the compression device A mounted on the front side of the supporting machine frame c of the machine body a.

Next, from this state, the compression device A provided on the machine body a
Operate switch SW2 to start. As a result, the motor M1 is rotated in the normal direction, the lifting mechanism 6 is lowered, and the lower end side of the compression bar 3 is pushed into the inner cavity of the split cell 1 as shown in FIG. 6 and slid onto the upper surface of the powder. The dropping lid 15 that is placed freely is pressed to compress the powder.

As a result, when the pressure sensor S1 detects a predetermined pressure, the rotation of the motor M1 is stopped, and then the motor M1 is rotated in the reverse direction so that the elevating mechanism 6 is operated to move upward.
Returning to the state shown in the figure, a test piece pressed into a predetermined compression density in the divided cell 1 is molded.

Next, when this state is reached, the lateral movement device e is actuated to move the split cell mounting table d supporting the split cell 1 to the left. The operation of the lateral movement device e is performed by the pressure sensor S1.
It may be automatically performed in connection with the control operation of the motor M1 by the.

By the lateral movement of the divided cell mounting table d, the divided cell 1 containing the molded test piece P of the powder is moved to the lifting mechanism 7
Is in a lowered state, and therefore moves toward the clamp 5 of the tensioning device B located at the lower limit of the lowering operation. Since the clamp 5 is formed in the shape of a dovetail groove that fits into the engaging flange portion 11 on the upper end side of the divided cell 1, when the lateral movement device e completes the lateral movement operation to the left. , The clamp 5 of the tension device B is automatically engaged.

Next, when the operation of the lateral moving device e is completed, the switch SW3 for operating the tension device B is operated. The operation of the pulling device B may be controlled so as to be automatically performed in association with the control of the operation of the lateral movement device e.

As a result, in the tensioning device B, the clamp 5 is lifted by the lifting operation of the lifting mechanism 7, the upper half 1a of the split cell 1 is pulled up, and the test piece P attached to the inner peripheral surface of the split cell 1 is attached. By the adhesive force, the upper half of the test piece P attached to the upper half 1a of the divided cell 1 and the lower half of the test piece P attached to the lower half 1b of the divided cell 1 are torn apart vertically. A break occurs, and the tensile pressure at this time is measured by detecting the movement of the upper half 1a of the divided cell 1 by the laser displacement meter S2 or the load detection by the pressure sensor S3.

[Advantages of the Invention] As described above, the powder adhesion measuring device according to the present invention configured as described above compresses the powder filled in the divided cells 1 by the operation of the compression device A to a predetermined compression. When the test piece P compacted to a high density is formed, it can be moved gently to the lower side of the tension device B by the lateral movement device e without touching the divided cell 1 that accommodates and holds it. And, by the operation of the lateral movement, the upper half of the divided cell 1
When the engaging brim portion 11 formed in 1a is in a state of being fitted and engaged with the clamp 5 of the tension device B and the tension device B is operated, the tension pressure can be measured. Therefore, the test piece P pressed into the divided cell 1 can be set in the tension device B in a state where the test piece P does not collapse.

[Brief description of drawings]

1 and 2 show the conventional means, FIG. 1 is a partially cutaway front view of the main part of the compression device, and FIG. 2 is a partially cutaway front view of the main part of the tension device. 3 to 9 show an apparatus according to an embodiment of the present invention. FIG. 3 is a schematic perspective view of the whole, FIG. 4 is a perspective view of a main portion of the same, and FIG. FIG. 6 is a perspective view, FIG. 6 is a partially cutaway front view of an essential part of another embodiment, and FIGS. 7, 8 and 9 are explanatory views of the same operation. Explanation of drawing symbols A …… Compressor, B …… Tensioner P …… Test piece, L …… Laser beam M1, M2, M3 …… Motor S1 …… Pressure sensor, S2 …… Laser displacement sensor S3 …… Pressure Sensor, a: Airframe, b: Platform c: Supporting machine frame, d: Divided cell mounting table, e: Lateral movement device 1: Divided cell, a: Upper half, 1b: Lower Half part 10 ...... Dividing surface, 11 ...... Engagement collar part, 12 ...... Inner cylinder 13 ...... Bottom cover, 14 ...... Step part, 15 ...... Drop cover 2 ...... Mounting table, 3 ...... Compression bar, 30 …… Guide member 31 …… Sliding member, 32 …… Pressing member, 33 …… Stay 34 …… Mounting member, 35 …… Spring, 4 …… Set table 5 …… Clamp, 50 …… Guide member, 51… … Sliding member 52 …… Spring, 53 …… Suspension rod, 6 …… Lift mechanism 60 …… Screw rod, 61 …… Stay, 62 …… Female screw 63 …… Conduction pulley, 64 …… Conduction belt, 7 …… Lifting mechanism 70 …… Child rod, 71 ... Stay, 72 ... Female screw 73 ... Conductive pulley, 74 ... Conductive belt, 80 ... Fitting part 81 ... Guide member, 82 ... Shaft support member, 83 ... Screw rod 84 ... … Chain belt, SW1, SW2, SW3 …… Switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G01N 3/08

Claims (1)

[Scope of utility model registration request] 1. A compression bar 3 is attached to an airframe a by the operation of a lifting mechanism 6.
And a tensioning device B, in which the clamp 5 moves up and down by the operation of the lifting mechanism 7, are mounted side by side in parallel with each other. It is mounted so that it can move laterally between the lower position of A and the lower position of the tensioning device B, and a lateral moving device e that moves it is connected to the divided cell mounting table d whose axial direction is the vertical direction. Cylindrical compression bar 3 that moves up and down in the inner cavity by the elevating mechanism 6
The divided cell 1 into which the lower end side of which is removably fitted is detachably formed on the upper half portion 1a and the lower half portion 1b by the dividing surfaces 10 at the upper and lower intermediate positions of the body portion, and is placed, and A powder adhesion measuring device, characterized in that the clamp 5 of the pulling device B is formed in a shape to be fitted with an engaging flange portion 11 formed in the upper half portion 1a of the divided cell 1.