JPS59232525A - Automatic controller of coffee pulverizing degree - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for automatically varying the size of coffee grounds in an espresso-coffee making machine equipped with a coffee grinder having a plurality of grinders that can be approached and separated from each other by means of a screw control mechanism. Regarding a powder control device.

In an espresso coffee machine that has multiple coffee grinders, the coffee is ground in the form of beans in an appropriate grinder. Espresso coffee is supplied from -, gradually taken from this mother - and then ground. : Seru. To obtain the best essolene-coffee, coffee must be ground into a predetermined optimal size of powder, and the optimal powder size depends on various factors such as the type of coffee, the moisture content of the coffee, etc. It changes depending on.

It is therefore necessary to periodically adjust the coffee grinder by moving all or part of the grinders in order to obtain the desired powder size at the outlet.

Specifically, if the operator of the Nisprerun coffee machine notices that the time it takes to dispense the coffee, that is, the time it takes for the water to pass through the coffee grounds placed in the filter, is too short; In other words, if the coffee powder is too coarse, the operator can adjust the coffee grinder by moving the grinders closer together.

This also happens when the coffee powder is too fine.
If the time taken to dispense coffee is too long, the operator adjusts the grinders by moving them apart from each other.

However, this method cannot be said to be sufficient.

In fact, the operator may not immediately notice that the coffee dispensing time has deviated from optimal conditions, and the coffee machine continues to dispense suboptimal coffee. Additionally, operators often over-adjust the coffee machine, and the machine continues to deliver sub-optimal coffee even after adjustment.

The present invention has been conceived in view of the above points, and its object is to provide an automatic coffee grinding device of the type described above, which has structural and functional features that eliminate the above-mentioned drawbacks.

To achieve the above object, the regulating device of the invention comprises a wheel which is attached to the screw of the screw control mechanism and has a toothed periphery, and a timer set to the desired duration of the machine cycle. , an assembly movable in a radial direction with respect to said wheel and moving towards said wheel at the end of each machine cycle; first intersecting
two suppression rods each movable between an operating position and a second non-operation position in which their path of travel is located outside the periphery of the wheel; and one suppression rod controlled by the timer; means for moving from the operative position to the non-operative position and subsequently moving the other suppression rod from the non-operative position to the operative position.

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

As shown in FIG. 1, the essolen coffee making machine, designated by the reference numeral 1, has a support case 2 in which a coffee grinder 3 of the conventional type is provided, and a regulating device 4 according to the invention. , fully equipped, this device acts on the grinder 3 to adjust the size of the coffee powder supplied from the grinder.

Inside the support case 2, there is an espresso coffee making machine 1.
Various mechanisms (not shown) related to coffee production in the coffee grinder 3'f: driving motor 5
is installed.

As shown in FIGS. 1 to 3, a bar 6 having a horizontal axis XX is provided so as to be movable a predetermined distance along a horizontal direction YY perpendicular to the axis XX. This bar 6 is supported at both ends by slots 7.8 formed in the support case 2. The bar 6 is also part of a known mechanism for making coffee and undergoes a reciprocating motion at the end of each production cycle of the espresso coffee machine.

The coffee grinder 3 has a generally cylindrical body 9 and two annular grinders 12, 13 facing each other, the body having a vertical axis z-z6 and two heads 1.
0.11. The grinder 12 is fixed at a head of 1°, and the grinder 13 is rotated by the motor 5 and is rotated by the thrust bearing ring 14 engaged with the grinder 13.
2 and in a direction away from the grinder 12.

A screw control mechanism 15 is provided for moving the thrust bearing ring 14, which control mechanism includes a screw 16 and a nut 17 engaged with each other. In detail, the nut 17 is rigidly fixed to the thrust bearing ring 14 by two arms 18, 19;
The screw 16 has an axis v-v-1 parallel to the axis 2-2, is rotatably provided on a right-angled plate 20 fixed to the support case 2, and is held along the axial direction by this right-angled plate. has been done.

When the screw 16 is rotated clockwise as shown by arrow F, the grinder 13 moves toward the grinder 12 to reduce the size of the coffee powder, and the screw is rotated in the opposite direction as shown by arrow G. and the grinder 13 moves in the opposite direction.

Automatic adjustment device 4 that automatically adjusts the size of coffee powder
is a wheel 21 with a toothed periphery 22 and Y-Y
and an assembly 23 movable in the direction and the radial direction of the wheel.

The assembly 23 has two pressure rods 24, 25 in the form of elongated blades, which rods are arranged side by side. In addition, the pressing rods 24.25 are configured to be slidable in slots 26.27 formed in the right-angled plate 2 as the assembly 230 moves in the Y-Y direction.
They are also spaced apart so that they can rotate around the slots 26 and 27.

Specifically, the pressure a2 24.25 is in the first operating position 24a, shown in broken lines in FIG.

25g and a second non-operating position indicated by a solid line.

When the push rods 24, 25 are in their respective operating positions, when the assembly 23 moves in the Y-Y direction, the path of travel of these rods intersects the circumferential edge 22 of the wheel 21, and the push rods 24, 25, respectively, In position 2, the path of travel of these rods is away from the periphery of the wheel.

The assembly 23 is located in the path of travel of the par 6 and includes a wedge 28 having a groove 29, and the pressing rod 2
4.25 right angle tongues 30.degree. 31 are seated in this groove at a distance.

Moving means 32 are provided for moving the pressure rods 24, 25 from a first position to a second position.

This moving means 32 has two coaxial cams 3.7, 34 which rotate integrally with a shaft 35, which shaft is arranged coaxially with the axis V--V of the screw 16. The cams 33 , 34 are rotated by a constant speed motor 36 via a reduction gear 37 .

The antennae portion 3B of the pressing rod 24.25, ? 9 are engaged with cams 33, 34, respectively.

A spring 40.41 is provided between the right plate 20 and each push rod 24, 25 to hold the antennae 38.39 in contact with the respective cam 33.34.

The cams 33, 34 rotate in the direction of arrow H, and rotate once in a predetermined constant time due to constant speed operation of the motor 36. This time is selected to match the optimum period in the espresso coffee production cycle.

A cam 42 is keyed to the shaft 34, and is operated by this cam to move the microcontact 43 to the cam 33.
34 outputs a signal for determining the initial angular position.

When the cams 33 and 34 are at the initial position and at the end of each rotation of the tabs, the cams 33 and 34 pivot around the antennae 38 and 39.
(2) to the position 33g+34a which is the farthest apart from each other, and hold the pressing rods 24, 25 at the second position spaced apart from each other, i.e., the non-operating position.

When the cam 33 is deviated by a predetermined angle, for example 30', from the initial position and the end position of the tab, the cam 33 positions the antenna portion 38 at the minimum separation position 33b.

Further, when the cam 34 is deviated from the initial position, that is, the final position by a predetermined angle, for example, 30 degrees, the antenna portion 39 is positioned at the minimum separation position 34b.

As the cams 33, 34 rotate towards their end position, the feelers 38 contact the minimum spacing position 33b and the spring 40 holds the push rod 24 in its first operating position. In addition, the antenna part 39a is at the maximum separation position, 94a
to maintain the suppression rod in its second, non-operating position.

When the motor 36 rotates at a constant speed, the moving means 32
First, one pressing rod is moved from the operating position to the non-operating position, and then the other suppressing rod is moved from the non-operating position to the operating position. During this time, both suppression rods are in the non-operating position for a predetermined period of time.

The motor 36, which rotates at a constant speed, constitutes a timer that makes one revolution of the cam 33, 34 at a predetermined time selected according to the optimum period of one production cycle of essolene coffee.

Next, the operation of the automatic adjustment device 4 configured as above will be explained.

The espresso coffee production stove is initially activated, and at the same time the motor 36 and the various mechanisms of the espresso coffee making vessel are activated.

After a certain time t, which varies depending on the size of the coffee grounds, the espresso coffee is dispensed and at the same time the bar 6 is moved to rest against the wedge 28 of the assembly 23. Accordingly, the par 6, together with the pressure rods 24, 25, presses the wedge 28 in the direction towards the wheel 21.

If the time t corresponds to the desired period for dispensing espresso coffee, the cams 33, 34 are rotated once in the same time and are respectively located in the initial state.

In this initial state, the pressure rods 24, 25 are both in the inactive position. Therefore, assembly 23
while moving towards the wheel 21, the pressing rod 24.2
6 does not engage with the peripheral edge 22 of the wheel 21.

However, the time t is shorter than the optimal time, and the cam 3
3. If 34 does not make one complete revolution, the push rod 24 is in the operating position and the movement of the assembly 23 is caused by 1:
! l) engaging the toothed periphery 22 of the wheel 21; Accordingly, the wheel 21 is moved by the arrow H by the pressing rod 24.
When the user rotates the screw 16 in the direction, the slide bearing ring 14 and the grinder 12 move upward accordingly. Therefore, the size of coffee powder becomes smaller.

Also, time t is longer than the optimal time, and cam, 33, 3
If 4 stops at a position where it has rotated one rotation or more, the pressing force is 0.
The y-dove 25 is in the operating position and engages the toothed periphery 22 of the wheel 21 by movement of the assembly 23. Accordingly, the wheel 21 is rotated in the direction of arrow G by the pressing rod 25, and the screw 16 is rotated counterclockwise.
Accordingly, the grinder 13 moves away from the grinder 12. As a result, coarser coffee grounds are produced.

As described above, the coffee powder size automatic adjustment device of the present invention can completely automatically adjust the size of coffee powder, and has a simple structure and excellent functional reliability.

It goes without saying that the present invention is not limited to the embodiments described above, and that various changes can be made within the scope of the present invention.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing a part of an espresso coffee making machine equipped with an automatic adjustment device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the automatic adjustment along line ■-H in FIG. Cross-sectional view of the device. FIG. 3 is a cross-sectional view of the automatic adjustment device taken along the line ■--■ in FIG. 3... Coffee grinder, 4... Automatic adjustment device, 1
．． 2, IJ... Grinder, 15... Screw control mechanism, 21... Wheel, 22... Periphery, 24° 25... Pressing rod, 33.34... Cam. Applicant's representative Patent attorney Takehiko Suzue = Iθ, 3 Procedural amendment filed A.7,208 Manabu Shiga, Commissioner of the Japan Patent Office ■, Indication of Case Percentage Request No. 59-065998 No. 2, Invention Name: Coffee powder automatic vq adjustment device 3, person making the amendment Relationship to the case: Patent author Nuopa Faema Nis B.N. 4, agent address: 26-5 Toranomon 1-chome, Minato-ku, Tokyo] 7 Mori Pill 〒105 Telephone 03 (502) 3181 (
Large sheet 1 yen) June 26, 1980 6, Subject of amendment Mei yen 8' I Fu 7, Contents of amendment # accumulation of specification as attached (no change in contents)

Claims (1)

[Claims] 1. An automatic coffee powder degree adjustment device that automatically adjusts the size of coffee powder in a coffee making machine equipped with a coffee grinder having a plurality of grinders that can be approached and separated from each other by a screw control mechanism. a wheel mounted on the thread of the screw control mechanism and having a toothed periphery; a timer set to a desired machine cycle; an assembly disposed within the assembly for movement toward the wheel at an end thereof; and a first operating position within the assembly, wherein the path of their movement intersects the periphery of the wheel; two suppressor rods each movable between a second non-operating position located at the second non-operating position; and a second suppressing rod that is controlled by the timer to move one of the suppressing rods from the operating position to the non-operating position and then moving the one suppressing rod from the operating position to the non-operating position. An automatic coffee powder adjustment device characterized in that it is equipped with a moving means for moving a suppression rod from a non-operating position to an operating position. 2. The moving means includes two coaxial cams that are attached to a shaft provided coaxially with the screw and rotated by a motor, and two coaxial cams that are each fixed to the suppression rod and come into elastic contact with the cams. The motor is a constant speed motor that rotates the cam once in a predetermined cycle, and the cam rotates the suppression rod through each of the antenna pieces. The coffee powder automatic adjustment device according to claim 1, characterized in that the device is moved from an operating position to a non-operating position.