US3875423A - Kneading and mixing machine - Google Patents

Kneading and mixing machine Download PDF

Info

Publication number
US3875423A
US3875423A US340843A US34084373A US3875423A US 3875423 A US3875423 A US 3875423A US 340843 A US340843 A US 340843A US 34084373 A US34084373 A US 34084373A US 3875423 A US3875423 A US 3875423A
Authority
US
United States
Prior art keywords
push
machine
switch
timer
program
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US340843A
Other languages
English (en)
Inventor
Kate Kemper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3875423A publication Critical patent/US3875423A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21C—MACHINES OR EQUIPMENT FOR MAKING OR PROCESSING DOUGHS; HANDLING BAKED ARTICLES MADE FROM DOUGH
    • A21C1/00—Mixing or kneading machines for the preparation of dough
    • A21C1/14—Structural elements of mixing or kneading machines; Parts; Accessories
    • A21C1/145—Controlling; Testing; Measuring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S366/00—Agitating
    • Y10S366/601—Motor control

Definitions

  • ABSTRACT [30] Foreign Application Priority Data An electrically driven kneading and mixing machine Mar. 15 I972 Germany 22l2430 ith d ff rent speed rang s. ha ing a guard grille which, when raised, switches off the machine.
  • the invention relates to an electrically driven kneading and mixing machine with different speed ranges, which is provided with a guard grille which on being lifted up switches off the machine in any speed range as well as with a time switch and a pressure switch.
  • Such a machine is known for example from the German Accepted Pat. Document No: l,l78,803. It is required of this bakery machine that by swinging up the guard grille the drive motor is disconnected and that after lowering the grille the machine again starts with the lowest speed. The machine is provided with two speed stages, in order to obtain the greatest possible torque. If the machine known from the abovementioned Accepted Pat. Document is stopped by opening the guard grille at its smallest speed, it is sufficient for restarting it to close the guard grille.
  • the invention seeks to make the entire operating cycle pre-programmable in such a manner that the operating procedures, starting at different speeds, can be switched on and off automatically.
  • the invention also seeks to eliminate or reduce these disadvantages.
  • a further electrically driven time switch and a further push button switch are located in series with respect to the first time switch and the first pressure switch, the first time switch being constructed in such a manner that on expiration of its programmed operational time, an increased speed range can be switched in, which is controllable by the second time switch.
  • the second time switch is preferably made programmable in the whole operating time.
  • a toggle switch is in parallel with both time switches so that the automatic unit can be switched off even during operation, the machine operating further without interruption with the speed switched on by the push button switch.
  • the program set by the time switches can be varied manually in an advantageous manner during operation by actuating the time switches or push button switches.
  • Telltale lamps are coupled, in an advantageous manner, to the pressure switches, in each case associated with a certain operating speed, so that the operating state prevailing in each case is visually indicated.
  • Such a device indicating the operational state is advantageous, particularly in the case of processing machines of the type present here, since, for example, the set speed of the kneading tool in the operational state cannot be easily recognized directly, since the tool is almost completely immersed in the dough to be processed.
  • a reversing switch is proposed to control the bowls direction of rotation and the bowls speed.
  • a toggle or inching switch is provided for the short-duration rotation of the bowl with its smallest speed.
  • the actuation elements are arranged on the front side of the machine part constructed as a tool carrier which can be raised.
  • the invention should preferably fulfil the following requirements:
  • the machine must be capable of being turned off by several elements, such as guard grille and time switch;
  • the machine can start at any set speed after a stoppage by actuating one single pressure switch;
  • the automatic switching unit should be capable of being by-passed at all times, i.e., even during operation;
  • the set program should be capable of either automatically starting from the beginning or should be continued from the interruption point, in the case of interruption of the operational process and restarting of the machine;
  • the direction of rotation and speed of the bowl should be adjustable independently of the set program and finally there should exist the possibility, likewise independently of the set program, of rotating the bowl for a short time at its smallest speed.
  • FIG. 1 shows a side view of an electrically driven kneading and mixing machine
  • FIG. 2 shows a circuit diagram for the operation and FIG. 3 shows the circuit diagram of the control in accordance with the invention.
  • a rotatable bowl I is secured on a movable gear unit on machine housing 2. Kneading tools 3, which are guided in the turret 4 of the gear unit or machine housing 2, project into the bowl I.
  • a guard grille 5 is tiltably mounted about the pivot 6 and mechanically connected to a switch b4 (FIG. 3) inside the housing. To raise the kneading tool 3 out of the bowl I, the turret 5 can be raised.
  • the actuating elements are on the front side 7 of the turret 4, so that the switches to be actuated are arranged clearly and easily accessible.
  • FIGS. 2 and 3 are provided with symbols according to DIN 40 700 and DIN 40 709 to DIN 40 719 so that these may be understood by a person skilled in the art without the need for a full explanation.
  • the circuit diagram l shown on the left-hand side of FIG. 2 shows the circuit for the drive motor lml of the bowl, which has generally conventional safety fuses lcl, a reversing switch L I and corresponding contactors lcl and lcZ.
  • FIG. 2 On the right-hand side of FIG. 2 is shown the circuit II for the drive motor 2ml of the kneading tools, from which it is obvious that the motor M can be operated at two different speeds.
  • Polechangeable asynchronous motors which are operated with three phase current, are appropriately used for the drive.
  • the pole changing of the motors in a forwards and backwards rotation or from one speed stage into another is effected with the help of contactors.
  • the bowl motor Iml has two contactors. namely contactors with the coils lcl and lc2.
  • the kneading spiral motor 2m1 has three contactors, namely contactors with the coils 2cl, 2c2 and 2c3.
  • the coil of the contactor 1c2 has five contacts, whereas all the other contactors each have three contacts on the motor side.
  • FIG. 3 shows the connection, with regard to circuitry, of the individual actuating elements for actuating the motor control coils, which coils are arranged just above terminal board L.
  • the circuit in this case is located between the phase T and Mp and has a safety fuse e5 in series circuit, as well as thermal cutouts 2e4, leS and le4.
  • This center tap Mp of a delta circuit of a threephase current is connected to the lower terminal board Ll,4 to L2,2 so that all the points 4 to 13 are electrically connected to each other.
  • the data under the terminal point 4 thus means that on energisation of the coil lcl no normally open auxiliary contact is actuated, whereas the normally closed auxiliary contact above the terminal point 9 is opened, which contact is also given the reference numerals lcl and the contact points 11 and I2.
  • the data regarding the terminal point 6 thus means that on energisation of the coils 2cl the normally open auxiliary contact above the terminal point 7 which is also given the reference numeral 2cl, and has the contacts 3i and 32, is closed, whereas the normally closed auxiliary contact above the terminal point point 10 which also carries the reference numeral point 2cl and has the terminal point I] and 12, is opened and so on.
  • the coil d3 belongs to the second time switch and has an electro-magnetic ope rating system with a magnetic starting delay.
  • the normally closed auxiliary contact of the time switch which has the contact points 5 and 6, is given the reference numeral d1 on the left-hand side of FIG. 3.
  • This normally closed auxiliary contact contact dl is mechanically connected to the normally closed auxiliary contact d1 which has the switching contacts I and 2, the latter being shown in the upper part of FIG. 3, the normally closed auxiliary contacts, in turn, being mechanically coupled to the actual switch mechanism of the time switch.
  • Another contact constructed as 21 normally open auxiliary contact or as a closing contact, with the contact point 7,8 as well as a coil, belong to this time switch, which is arranged circuit wise above the contact point 13 on the terminal board L.
  • the push button or inching switch b3 denotes a push-button switch effectively acting as an inching switch which serves to cause the bowl to rotate for a short time at its lowest speed during the switch actuation, independently of the set program.
  • the push button or inching switch b3 has contacts 3 and 4 and has a hand operation with the symbol for the direction of action.
  • the switch contact b3 is mechanically connected to the opening contact and to the normally closed auxiliary contact with the contacts II and 12; b0 with the contact points I and 2 represent the hand operated main switch with hand operation, which is like wise constructed as a normally closed auxiliary contact and has a device for automatic reset when the actuation force stops.
  • the main switch b0 lies parallel to the toggle switch b3.
  • the first time switch II, and in parallel, the second time switch with its contacts d3.
  • the contact d1 which is mechanically actuated by the time switch, is a toggle switch with the make auxiliary contact b5 and the contact points 3] and 32, which is not coupled with any further normally closed auxiliary contact or normally open auxiliary contacts.
  • the break contact b4 which is mechanically connected to the guard grille and has the contact contacts 3 and 4, is in series with the time switch contacts d1.
  • the push button switch bl in the form of a make contact with the contacts 3 and 4, which has a device for automatic reset in the direction of the arrow when the actuating force is removed.
  • auxiliary contact b6 In series with this push button switch is the normally open auxiliary contact b6 which again is constructed as a toggle switch as in the case of b5 and is parallel to the break contact with the contacts 1,2 which in turn is mechanically connected to the contact d3 and the contact points 3,4.
  • the switch b2 constructed as a push button switch with hand actuation, has a break contact with the contacts 1 and 2, which is mechanically coupled to a make contact 3,4.
  • auxiliary contacts b5 and b6 are a toggle switching arrangement, which assume two different circuit positions, which is indicated by the v in front of the circuit symbol.
  • the auxiliary contactor d2 is energised on actuation of the main contactor 2cl, since the contactor Zcl also actuates contact 2cl above d2.
  • the first push-button switch bl serves to turn on a slow speed of the kneading tool, whereas the second push-button switch b2 serves to switch on the higher speed of the kneading tool.
  • the motor given the reference M in FIG. 3 serves to drive the time switching unit.
  • the telltale lamp hl serves for the visual indication of the switching state of the first push button switch bl, whereas the control lamp h2 visually shows the switching state of the second push button switch b2.
  • a first time switch d1 after the expiration of its period, triggers the second time switch d3, which now takes over the control process alone. Since both time switches are driven by one motor, synchronism of the time switches is ensured in accordance with the invention. After expiration of the total operating time programmed into the switch d3, the latter switch (d3) automatically switches off this machine.
  • the automatic unit can also be shortcircuited at all times by actuation of the toggle switch b5, b6, so that the automatic unit is switched off thereby.
  • both the mixing time and the pure kneading time being freely selectable independently of each other, namely by corresponding programming of the time switches, an automatic switchover taking place from one operating process to the next one, so that thereby the whole process is automated in a simple manner.
  • the circuit is constructed predominantly by contactors, which represent the best, safest and most durable of switchgear, which are actuated merely by control equipment, i.e., control switches, which in turn only have to switch the current for the magnetic coils.
  • control equipment i.e., control switches
  • An electrically driven kneading and mixing machine operating in different speed ranges having a lift able guard grille; means connected to the grille for switching off the machine in any speed range when the grille is lifted; a first push-button switch; means connected to said first push-button switch for driving the machine at a relatively low speed upon actuation of the first push-button switch; a first timer connected to the first push-button switch for determining the operating period of the machine at the relatively low speed; comprising in combination:
  • a second timer connected to said second pushbutton switch for determining the operating period of the machine at the relatively high speed, said second timer being connected in series with said first push-button switch and said first timer, said second timer being programmable with the entire work period;
  • a second toggle switch connected parallel with said second timer and in series with said first and second push-button switches.
  • timers each have a program setting indicator and in a program expiration indicator and wherein on actuating the guard grille, the program expiration indicator is arrested at the point in time of the operation interruption and, with the continuance of the operating program, controls the remaining part of the pre-programmed operating time.
  • Machine 3
  • the timers each have a program setting indicator and in a program expiration indicator and wherein on actuating the guard grille, the program expiration indicators fall back into the setting position, so that the originally programmed program restarts when the machine is switched on again by actuation of the first or second push button switch.
  • Machine according to claim 1 wherein indicating lamps are coupled with the push button switches, so that the operational state prevalent in each case is indicated visually.
  • Machine according to claim 1 wherein a reversing switch is provided to control the bowl rotation sense and bowl speed.
  • Machine according to claim 1 wherein a toggle or inching switch is provided for rotating the bowl for a short time at its lowest speed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Food-Manufacturing Devices (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US340843A 1972-03-15 1973-03-13 Kneading and mixing machine Expired - Lifetime US3875423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722212430 DE2212430A1 (de) 1972-03-15 1972-03-15 Elektrisch angetriebene knet- und mischmaschine

Publications (1)

Publication Number Publication Date
US3875423A true US3875423A (en) 1975-04-01

Family

ID=5838957

Family Applications (1)

Application Number Title Priority Date Filing Date
US340843A Expired - Lifetime US3875423A (en) 1972-03-15 1973-03-13 Kneading and mixing machine

Country Status (7)

Country Link
US (1) US3875423A (fr)
BE (1) BE795081A (fr)
CA (1) CA1008158A (fr)
DE (1) DE2212430A1 (fr)
GB (1) GB1425231A (fr)
IT (1) IT982073B (fr)
NL (1) NL7301425A (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002849A1 (fr) * 1980-04-04 1981-10-15 Tredair Ind Inc Traitement des polymeres aux silicones
USD279072S (en) 1982-07-13 1985-06-04 U.S. Philips Corporation Kitchen machine base unit
USD279858S (en) 1982-09-02 1985-07-30 U.S. Philips Corporation Mixer stand
USD286258S (en) 1983-08-20 1986-10-21 Thorn Emi Domestic Appliances Limited Food mixer
US4683381A (en) * 1983-10-14 1987-07-28 Ets. Bonnet Controlled-access apparatus for the agricultural food industries
US4812674A (en) * 1985-05-20 1989-03-14 Square D Company Safety gate limit switch using Hall effect transducer
USD322009S (en) 1988-11-07 1991-12-03 Whirlpool Corporation Food mixer
US5207506A (en) * 1990-03-14 1993-05-04 Dito-Sama Device for extracting paste in particular from a kneading machine having a cylindrical vessel
WO1994002233A1 (fr) * 1992-07-24 1994-02-03 Univex Corporation Systeme de protection pour mixeur
USD344208S (en) 1991-07-12 1994-02-15 Dito-Sama Spiral kneader
USD346307S (en) 1992-07-24 1994-04-26 Univex Corporation Safety guard for mixer
US5533806A (en) * 1995-05-19 1996-07-09 Middleby Marshall Inc. Guard for industrial size food mixer
US6062725A (en) * 1997-11-20 2000-05-16 Dito Sama Machine of the whisk-mixer type having a retractable protective screen
US20040022124A1 (en) * 2001-05-16 2004-02-05 Hisao Yoshioka Partitioning device for mixer
US20060227654A1 (en) * 2005-04-08 2006-10-12 Blackburn Neal H Mixing machine and associated bowl guard system
US8308344B2 (en) 2008-01-24 2012-11-13 Premark Feg L.L.C. Mixing machine with associated bowl guard system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941207C2 (de) * 1978-08-23 1987-02-19 Kemper, Kate, Küsnacht, Zürich Elektrisch angetriebene Knet- und Mischmaschine
DE8401972U1 (de) * 1983-02-04 1984-04-26 I.P.E. Nuova Bialetti S.p.A. Industria Prodotti Elettrodomestici, Crusinallo di Omegna, Novara Haushaltsgerät für die Vorbehandlung von Lebensmitteln
DE3306071A1 (de) * 1983-02-22 1984-08-23 Wilfried Dipl.-Ing. 4930 Detmold Hacheney Vorrichtung zum herstellen hochwertiger feststoff-fluessigkeits-gemische

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857533A (en) * 1954-05-03 1958-10-21 Whirlpool Co Electric motor hand tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857533A (en) * 1954-05-03 1958-10-21 Whirlpool Co Electric motor hand tool

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981002849A1 (fr) * 1980-04-04 1981-10-15 Tredair Ind Inc Traitement des polymeres aux silicones
US4300841A (en) * 1980-04-04 1981-11-17 Tredair Industries, Inc. Processing of silicone polymers
USD279072S (en) 1982-07-13 1985-06-04 U.S. Philips Corporation Kitchen machine base unit
USD279858S (en) 1982-09-02 1985-07-30 U.S. Philips Corporation Mixer stand
USD286258S (en) 1983-08-20 1986-10-21 Thorn Emi Domestic Appliances Limited Food mixer
US4683381A (en) * 1983-10-14 1987-07-28 Ets. Bonnet Controlled-access apparatus for the agricultural food industries
US4812674A (en) * 1985-05-20 1989-03-14 Square D Company Safety gate limit switch using Hall effect transducer
USD322009S (en) 1988-11-07 1991-12-03 Whirlpool Corporation Food mixer
US5207506A (en) * 1990-03-14 1993-05-04 Dito-Sama Device for extracting paste in particular from a kneading machine having a cylindrical vessel
USD344208S (en) 1991-07-12 1994-02-15 Dito-Sama Spiral kneader
WO1994002233A1 (fr) * 1992-07-24 1994-02-03 Univex Corporation Systeme de protection pour mixeur
USD346307S (en) 1992-07-24 1994-04-26 Univex Corporation Safety guard for mixer
US5348393A (en) * 1992-07-24 1994-09-20 Univex Corporation Safety guard system for food mixer
US5533806A (en) * 1995-05-19 1996-07-09 Middleby Marshall Inc. Guard for industrial size food mixer
US6062725A (en) * 1997-11-20 2000-05-16 Dito Sama Machine of the whisk-mixer type having a retractable protective screen
US20040022124A1 (en) * 2001-05-16 2004-02-05 Hisao Yoshioka Partitioning device for mixer
US6827481B2 (en) * 2001-05-16 2004-12-07 Aicohsha Mfg. Co., Ltd. Partitioning device for mixer
US20060227654A1 (en) * 2005-04-08 2006-10-12 Blackburn Neal H Mixing machine and associated bowl guard system
US7384187B2 (en) * 2005-04-08 2008-06-10 Premark Feg L.L.C. Mixing machine and associated bowl guard system
US20080198692A1 (en) * 2005-04-08 2008-08-21 Premark Feg L.L.C. Mixing machine and associated bowl guard system
US7543980B2 (en) * 2005-04-08 2009-06-09 Premark Feg L.L.C. Mixing machine and associated bowl guard system
US8308344B2 (en) 2008-01-24 2012-11-13 Premark Feg L.L.C. Mixing machine with associated bowl guard system

Also Published As

Publication number Publication date
IT982073B (it) 1974-10-21
DE2212430A1 (de) 1973-09-27
NL7301425A (fr) 1973-09-18
CA1008158A (en) 1977-04-05
GB1425231A (en) 1976-02-18
BE795081A (fr) 1973-05-29

Similar Documents

Publication Publication Date Title
US3319019A (en) Timed control device with variable programmed sequences
US2807684A (en) Reversing switch
US4892983A (en) Programmer/timer with combined line and program function switch
US5119053A (en) Self-coordinated device for the control and protection of electrical equipment
US7068009B2 (en) Drive arrangement, especially for a lifting mechanism and/or a traveling drive
US3295038A (en) Reversing mechanism and circuit for reversing an electric motor and controlling its functions
CN107068466A (zh) 一种适用于大电流的三相快速切换装置
NL7905062A (nl) Electrisch aangedreven kneed- en mengmachine.
CN206742125U (zh) 一种适用于大电流的三相快速切换装置
US3087102A (en) Door lift electrical circuit
CA1066359A (fr) Circuit contacteur de commutation pour moteur monophase a deux vitesses et a cinq conducteurs
BG103581A (en) Electric motor drive
JP3651033B2 (ja) タップ切換装置の電動制御回路
JPS5923089B2 (ja) タツプ切換器駆動制御装置
US2935877A (en) Cam operated holding in switch
JPS5926133Y2 (ja) 電動弁の安全装置
KR20210149388A (ko) 회로 차단기용 원격조작장치
US3223910A (en) Reversing systems for single phase motors
CN212848276U (zh) 一种剩余电流动作断路器
US2316678A (en) Circuit controller
CA1064577A (fr) Dispositif de positionnement pour changeur de prise rotatif commande par moteur
JPS5923088B2 (ja) タツプ切換器駆動制御装置
US2262207A (en) Electrically heated melting pot for typographical casting machines
JPH04248382A (ja) 容量の異なる複数の電動機の始動装置
US2079004A (en) Method for regulating the rate of feed of a milling machine or other machine tool having a plurality of driving motors