Push-pull electromagnetic component

Abstract

The present invention relates to an electromagnet, and discloses a push-pull electromagnetic component using dual drive coils, which comprises a housing, a coil arranged in the housing, and an iron core inserted into the coil. It is characterized in that the coil is composed of a combination of a front coil and a rear coil which are coaxially arranged and separated, the iron core is one piece, the rear end of the iron core passes through the front coil and is placed in the rear coil, the front end of the iron core is placed outside the housing, the directions in which the two coils attract the iron core are opposite, and as the two coils alternately work, the iron core can perform linear reciprocating movement in the axial direction of the front and rear coils. The present invention provides a push-pull electromagnetic component with a relatively large driving force and driven by dual drive coils. The blanking mechanism applying the push-pull electromagnetic component of the present invention has a low production cost and is simple to assemble, can realize rapid disassembly and assembly with the cooking machine frame, and each component can be disassembled and separated conveniently for the user to clean, effectively improving the user experience.

Description

[0001] This application is a divisional application of the application with the application date of July 30, 2021, application number 202110868644.2, and invention title "A feeding mechanism for a cooking machine". Technical Field

[0002] The present invention relates to an electromagnet, and in particular to a push-pull electromagnetic component using a dual drive coil. Background Art

[0003] Before cooking dishes in an existing cooking machine, putting ingredients into the cooking machine is an essential step.

[0004] The applicant previously submitted a utility model patent application to the State Intellectual Property Office (with the application date of August 19, 2019, application number 201921351001.5, and title "Feeding Device, Intelligent Cooking Machine, Feeding, Cooking and Heating System, and Flushing System"), which discloses a feeding device used in a cooking machine. The feeding mechanism is fixedly connected inside the housing of the cooking machine frame. After the user puts the ingredient box into the feeding mechanism, the cooking machine controls the work of the push-pull electromagnet installed in the supporting frame according to the requirements of the recipe, thereby controlling the opening of each bin door panel, and orderly feeding the ingredients in each bin into the frying pan to complete cooking.

[0005] However, the above structure has the following deficiencies:

[0006] 1. During the production process of the cooking machine, due to the complex connection structure between the feeding mechanism and the cooking machine frame, the assembly is difficult and the production cost is high.

[0007] 2. The electromagnet is installed inside the feeding mechanism, so that the feeding mechanism is electrically connected to other components outside the cooking machine frame. Therefore, the user cannot easily disassemble and clean the feeding mechanism during use. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a push-pull electromagnetic component with a large driving force and driven by a dual drive coil.

[0009] To solve the above technical problem, the technical solution of the present invention is as follows:

[0010] A push-pull electromagnetic component is provided, including a housing, a coil disposed inside the housing, and an iron core inserted into the coil. The coil is composed of a front coil and a rear coil that are coaxially and separately arranged. The iron core is one piece. The rear end of the iron core passes through the front coil and is placed inside the rear coil, and the front end of the iron core is placed outside the housing. The directions in which the two coils attract the iron core are opposite. As the two coils work alternately, the iron core can make a linear reciprocating movement in the axial direction of the front and rear coils.

[0011] Further, the housing is divided into a front housing and a rear housing. The front coil is placed inside the front housing, and the rear coil is placed inside the rear housing. A contact ring is provided on the iron core at the interval between the front coil and the rear coil, and a spring that can reset the iron core when both coils are powered off is sleeved on the iron core between the contact ring and the rear end face of the front housing.

[0012] Further, the spring is a conical spring.

[0013] Further, a permanent magnet block is screwed to the front end of the iron core.

[0014] Compared with the prior art, the blanking mechanism of the push-pull electromagnetic component of the present invention has low production cost and simple assembly, can realize rapid disassembly and assembly with the cooking machine frame, and each component can be disassembled and separated for easy cleaning by the user, effectively improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a position relationship diagram of the cooking machine frame and the blanking mechanism according to an embodiment of the present invention;

[0016] Figure 2 is a schematic structural diagram of the blanking mechanism according to an embodiment of the present invention when in the blanking position;

[0017] Figure 3 is a schematic structural diagram of the cooking machine frame according to an embodiment of the present invention;

[0018] Figure 4 is an exploded view of the blanking mechanism according to an embodiment of the present invention;

[0019] Figure 5 is a bottom view of the material guide groove according to an embodiment of the present invention;

[0020] Figure 6 is a position relationship diagram of the electromagnetic component and the base frame according to an embodiment of the present invention;

[0021] Figure 7 is Figure 6 a schematic cross-sectional view taken along line A-A in

[0022] Figure 8 is Figure 7 a partial enlarged view at B in (when the front coil is powered on);

[0023] Figure 9 is Figure 7 a partial enlarged view at B in (when the iron core attracts the pin column state);

[0024] Figure 10 is Figure 7 a partial enlarged view at B in (when the rear coil is powered on);

[0025] Figure 11 is one of the exploded views of the slider chute structure according to an embodiment of the present invention;

[0026] Figure 12 is another exploded view of the slider chute structure according to an embodiment of the present invention;

[0027] Figure 13 is a schematic cross-sectional view of the installation relationship of the motor, the base frame, and the automatic limit shaft seat structure 1 according to an embodiment of the present invention;

[0028] Figure 14 is an exploded view of the automatic limit shaft seat structure 1 according to an embodiment of the present invention;

[0029] Figure 15 is a schematic cross-sectional view of the automatic limit shaft seat structure 2 according to an embodiment of the present invention;

[0030] Figure 16 is an exploded view of the automatic limit shaft seat structure 2 according to an embodiment of the present invention;

[0031] Figure 17 is a schematic cross-sectional view of the automatic limit shaft seat structure 3 according to an embodiment of the present invention;

[0032] Figure 18 is an exploded view of the automatic limit shaft seat structure 3 according to an embodiment of the present invention;

[0033] Figure 19 is a schematic cross-sectional view of the manual limit shaft seat structure according to an embodiment of the present invention;

[0034] Figure 20 is an exploded view of the manual limit shaft seat structure according to an embodiment of the present invention; Detailed implementation manners

[0035] The following combines the accompanying drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0036] Combined with Figures 1 to 20 As shown, the feeding mechanism 200 in the cooking machine according to the present invention can be easily and quickly disassembled and installed from the cooking machine frame 100, which is convenient for users to clean and replace, and effectively improves the use experience.

[0037] The feeding mechanism 200 mainly consists of a base frame 1, a movable baffle 2, a box frame, a material guiding groove 5, a support assembly, and an electromagnetic assembly 9.

[0038] 1. The base frame 1 and the movable baffle 2 (the up, down, left, right, front, and rear directions are based on Figure 1 the following, the same below)

[0039] Combined with Figures 1 to 4As shown, the base frame 1 is a load-bearing component of the loading mechanism, which includes an outer frame 11, a crossbeam 12 and a longitudinal beam 13. In this embodiment, it corresponds to the discharge port of the food box 43. Four discharge ports 14 are formed between the three, and movable baffles 2 of equal areas are correspondingly arranged above the discharge ports 14. A receiving shaft 21 for hingedly connecting the movable baffles 2 is arranged just above the crossbeam 12. Correspondingly, receiving shaft holes 15 are arranged on the outer frame 11 and the longitudinal beam 13. The receiving shaft 21 passes through the hinge side 22 of each movable baffle 2 and the receiving shaft hole 15 on the longitudinal beam 13, and both ends are arranged in the receiving shaft hole 15 of the outer frame 11. The movable side edge of the movable baffle 2 overlaps the narrow strip baffle 16 extending from the inner side of the outer frame 11 to ensure that it always covers the discharge port 14.

[0040] Preferably, the movable baffle 2 is sprayed with food-grade anti-stick coating, such as Teflon and other common anti-stick coatings, to ensure that no food residue is left on the movable baffle 2 during the use of the cooking machine, and to facilitate automatic cleaning of the machine or manual cleaning by the user.

[0041] Combination Figure 4 , Figures 6 to 9 As shown, the left and right sides of the outer frame 11 are further provided with pin holes 17. For the convenience of production, the pin holes 17 on both sides of this embodiment are symmetrically arranged and the internal structure is symmetrical. The pin holes 17 are provided with pins 3, and the pins 3 are provided with a return spring 33 on the outer sleeve. The front end of the pin 3 is located above the hinge side 23 of the movable baffle 2 and the edge of the hinge side 23 is clamped between the pin and the narrow strip baffle 16. The pin hole 17 is a stepped hole, such as Figure 8 As shown, from left to right, there are the first step 171, the second step 172, and the third step 173. The inner diameter of the second step 172 is smaller than that of the first step 171 and the third step 173. The pin 3 is accommodated in the first step 171 and the second step 172. A limiting ring 31 is sleeved on the front of the pin 3 and the limiting ring 31 is placed in the first step 171. The outer diameter of the limiting ring 31 is larger than the inner diameter of the second step 172. A permanent magnet 32 ​​is fixedly connected to the rear end of the pin 3 and is placed in the third step 173. There are many ways to fix it, such as snap-on, pasting, and screw-on. In order to make the structure simple and the installation firm, this embodiment preferably uses a screw-on method for fixing.

[0042] The pin 3 can move forward and backward in the step hole, and the movable distance is the distance between the limiting ring 31 and the second step 172. When the pin 3 moves backward, the front end surface of the pin 3 is placed in the first step 171. At this time, the movable baffle 2 is not limited by the pin 3, and its movable side 23 can rotate freely along the supporting shaft 21 above the narrow baffle 16.

[0043] like Figure 4As shown, snap fasteners 18 are protruded on the left, right, and rear sides of the upper surface of the outer frame 11, and a clamping member 19 is provided on the front end surface. Both the snap fasteners 18 and the clamping member 19 are used to achieve quick disassembly and assembly with the material guide groove 5, facilitating production assembly and later maintenance, cleaning, or replacement by users.

[0044] 2. Box rack

[0045] Combined with Figure 1 and Figure 4 As shown, the box rack is arranged below the base frame 1 and is used to support the food box 43. The box rack consists of two independent guide rail racks 4 oppositely arranged on the lower left side and the lower right side of the base frame 1, and the internal structures of the two guide rail racks 4 are symmetric about the left and right. A connecting edge 41 that fits the lower surface of the outer frame 11 is provided at the upper end of the guide rail rack 4. The connecting edge 41 and the outer frame 11 can be screwed together by nuts and bolts or clamped by a clamping member (not shown in the figure) installed below the outer frame 11, which will not be elaborated here. As Figure 4 shown, a folded guide rail boss 42 is provided in the middle of the guide rail rack 4. Users can push the food box 43 along the guide rail bosses 42 on both sides into the box rack. The guide rail boss 42 can support the food box 43 and suspend the food box 43 in the cooking machine.

[0046] The bottom of the box rack is open. During the automatic cleaning process of the cooking machine, when the feeding mechanism 200 is in the feeding position, the cleaning nozzle (not shown in the figure) at the top of the machine frame 100 can directly spray the movable baffle 2 that has come into contact with the food. When the user manually cleans, it is also convenient for the user to directly clean the movable baffle 2 and the guide rail rack 4.

[0047] 3. Material guide groove 5

[0048] Combined with Figure 1 , Figure 2 and Figure 4 shown, the material guide groove 5 is arranged above the base frame 1 and is used to guide the food in the food box 43 into the frying pan 400. Preferably, the material guide groove 5 in this embodiment is in the shape of a funnel with a guiding function. An outer edge 51 extending around is provided at the opening edge on the lower side of the material guide cover. Protrusions 52 are protruded around the upper part of the outer edge 51. The protrusions 52 on the outer edge 51 can be inserted into the snap fasteners 18 on the outer frame 11, and the clamping member 19 is clamped with the protrusions 52 on the front side of the outer edge 51, enabling the material guide groove 5 to be quickly clamped with the outer frame 11, and the bottom surface of the material guide groove 5 fits the upper surface of the outer frame 11.

[0049] The lower opening of the material guide groove 5 has the same shape and size as the inner circle of the outer frame 11. The diameter of the upper port 54 of the material guide groove 5 is less than or equal to the diameter of the pan opening 401, which can ensure that when the feeding mechanism 200 rotates 180 degrees and is in the feeding position (see Figure 2 shown), after each movable baffle 2 is opened, the food in each compartment of the food box 43 all falls into the pan along the material guide groove 5.

[0050] As Figure 5 shown, on the inner wall of the material guiding groove 5 directly above both ends of the receiving shaft 21, there are inwardly protruding limiting blocks 53. When the blanking mechanism 200 is in the blanking position, these limiting blocks 53 can prevent the movable baffle 2 from being in a drooping state (i.e., a vertically downward state) when it is opened. This setting can not only prevent the hinge sides 23 of the two opposite movable baffles 2 from colliding with each other, but also ensure that each movable baffle 2 rotates back to its original position when the blanking mechanism 200 flips, so that each movable baffle 2 automatically resets and accurately covers the corresponding blanking port 14.

[0051] 4. Support assembly

[0052] Combined with Figure 1 and Figure 2 shown, support assemblies are provided on both sides of the base frame 1 for suspending and installing the blanking mechanism 200 on the frame 100 of the cooking machine, and rapid disassembly and assembly between the blanking mechanism 200 and the frame 100 can be achieved. The support assembly is composed of an active quick-release part and a driven quick-release part. The side connected to the motor output shaft 301 is called the active quick-release part, and the other side is called the driven quick-release part. As Figure 3 shown, the motor 300 is arranged on the left side of the frame 100, and an installation hole 101 is provided on the right side of the frame 100 for installing the driven quick-release part.

[0053] The present invention preferably has the following two types of support assemblies:

[0054] (1) Slider and chute structure (towards the base frame 1 is the front, and vice versa, the same below)

[0055] Combined with Figure 11 and Figure 12As shown in the figure, sliders are provided on the left and right sides of the outer surface of the outer frame 11. The main slider 601 is on the left side and the slave slider 602 is on the right side. Correspondingly, a main chute 61 and a slave chute 62 are provided on both sides inside the frame 100, and the sliders can be inserted into the chutes. The main chute 61 is provided with a connecting portion 611 and a chute portion 612. The connecting portion 611 is clamped and fixedly connected to the output shaft 301 of the motor, and the chute portion 612 is used to support the main chute 61; the slave chute 62 is provided with a clamping portion 621 and a chute portion 612. The clamping portion 621 is clamped and fixedly connected to the front end of the driven shaft 71, and the chute portion 612 is used to support the slave slider 602. A clamping platform 711 protrudes from the outer wall of the rear part of the driven shaft 71. The driven shaft 71 is installed on the frame 100 through a fixing structure. The fixing structure is composed of a waterproof plate 73, an oil seal 74, a bearing 75 and a fixing member 76. The waterproof plate 73 and the oil seal 74 are placed inside the installation hole 101 of the frame 100. Among them, the waterproof plate 73 is fixedly connected to the installation hole 101. The waterproof plate 73 is provided with a central through hole, and the central through hole is coaxially arranged with the installation hole 101. The oil seal is arranged in the central through hole; the bearing 75 and the fixing member 76 are placed outside the installation hole 101. The front end of the driven shaft 71 passes through the installation hole 101, the oil seal 74 and the clamping portion 621 of the slave chute 62 from the outside of the frame 100 and is fixedly connected. The front end face of the clamping platform 711 abuts against the oil seal 74, so that the water inside the frame 100 cannot flow out of the frame 100 through the oil seal 74, achieving a sealing effect. The fixing member 76 is provided with a central through hole, and the bearing 75 is embedded in the central through hole. Its outer ring is in tight fit with the fixing member 76. The rear end of the driven shaft 71 passes through the inner ring of the bearing 75, and the rear end face of the clamping platform 711 abuts against the inner ring. The fixing member 76 is fixedly connected to the frame 100.

[0056] To ensure the connection stability between the slider and the chute, a strong magnet 63 is embedded in the front end face where the slider and the chute are in contact. When the user disassembles the feeding mechanism 200, if the pulling force is greater than the suction force of the strong magnet 63, it can be easily disassembled. To facilitate the user to install the feeding mechanism 200 into the cooking machine, a chamfer is also provided at the entrance end of the chute to facilitate the slider to be pushed into the chute. The cross-sectional shape of the slider is adapted to the cross-sectional shape of the chute and can be of various shapes, such as rectangular, triangular, etc.

[0057] To ensure that the feeding mechanism 200 is installed in place before the cooking machine starts cooking, an induction switch can be set between the chute and the slider. Options include a mechanical travel switch or a non-contact induction switch, etc. Due to limited installation space and the need for good waterproof performance, it is preferred to use a reed switch between the main chute 61 and the main slider 601. The reed tube 64 in the reed switch is fixedly connected inside the slave chute 62. The circuit of the reed tube 64 passes through the slave slider 602 and the driven shaft 71 and is electrically connected to the main control circuit of the cooking machine. Relatively, a magnet 65 is embedded in the slave slider 602.

[0058] Such as Figure 12As shown, the main chute 61 is clamped to the motor output shaft 301 and fixedly connected by means of a nut and stud; the secondary chute 62 is fixedly connected to the secondary shaft 71 and is mounted on the frame 100 through the secondary shaft 71. The motor output shaft 301 drives the main chute 61, and the main chute 61 drives the main slider 601 on the base frame 1 to rotate, so that the blanking mechanism 200 rotates in a vertical plane, and the secondary slider 602, the secondary chute 62 and the secondary shaft 71 rotate following the rotation of the blanking mechanism 200.

[0059] When the user installs the blanking mechanism 200, align the sliders on both sides with the chutes and push them to the end. The strong magnets 63 on the front end faces of the sliders and the chutes are attracted to complete the installation; when disassembling the blanking mechanism 200, pull out the blanking mechanism 200, the magnets on the front end faces of the sliders and the chutes are disengaged from the attraction, and the sliders are disengaged from the chutes to complete the disassembly.

[0060] This slider-chute structure makes the disassembly and assembly of the blanking mechanism 200 convenient. The user can operate the disassembly and assembly with one hand, effectively improving the user experience of using the cooking machine.

[0061] (2) Shaft and bushing structure

[0062] Combined Figure 1 with Figure 13 As shown, on the left and right sides of the outer surface of the base frame 1, there are shafts. The left side is a stepped shaft 81 and the right side is a support shaft 82. Correspondingly, on the left side of the frame 100, there is a motor output shaft 301 that is clamped to the stepped shaft 81. An axial clamping hole 302 is provided at the front end of the output shaft 301. One end of the stepped shaft 81 is fixedly connected to the left side of the base frame 1, and the other end is a clamping block adapted to the axial clamping hole 302. The axial clamping hole 302 can be clamped with the clamping block. There are various clamping methods, such as D-shaped clamping, polygonal clamping, etc., which will not be elaborated here; on the right side of the frame 100, there is a shaft seat structure for supporting the end of the support shaft 82, and the shaft seat structure is installed on the installation hole 101. To ensure the installation stability and convenience of the blanking mechanism 200, the stepped shaft 81 and the motor output shaft 301 are fixedly connected by clamping. The support shaft 82 can axially move within the shaft seat structure, and a limiting structure is provided within the shaft seat structure. The user can first place the end of the support shaft 82 in the shaft seat, move the blanking mechanism 200 to the right, then align the stepped shaft 81 with the output shaft 301 and clamp them, and finally the limiting structure automatically limits the position or manually limits the position of the limiting structure to ensure that the stepped shaft 81 and the motor output shaft 301 always maintain a clamped and engaged state (see Figure 13 as shown).

[0063] 1) Automatic limiting shaft seat structure one

[0064] Combined Figure 13 with Figure 14As shown, the shaft seat structure is successively composed of a bushing 83, a limit sleeve 84, a spring cap 85, a spring 86, and a spring seat 87 from front to back. The rear end of the limit sleeve 84 is inserted into the mounting hole 101 and fixedly connected to the frame 100. An axial sleeve hole 841 is provided on the front end face of the limit sleeve 84, and the bushing 83 is embedded in the sleeve hole 841. The bushing 83 is used to support the end of the support shaft 82, and the support shaft 82 can rotate freely within the bushing 83. To reduce friction, in this embodiment, a plastic bushing 83 with self-lubricating characteristics is preferably used. An axially rearward extending cap hole 842 is further provided in the limit sleeve 84 behind the sleeve hole 841. A clamping boss 843 protrudes from the front part of the cap hole 842. The spring cap 85 is inserted into the cap hole 842 from back to front, and its cap edge 852 can abut against the clamping boss 843. The spring seat 87 is located at the rear end of the limit sleeve 84 and fixedly connected to the frame 100. An axial convex column 871 for preventing the spring 86 from being displaced is provided on its inner bottom surface. The spring 86 is sleeved on the axial convex column 871 and placed inside the spring cap 85.

[0065] The end of the support shaft 82 can pass through the bushing 83 to press the spring cap 85, and the spring cap 85 can move backward until its cap edge 852 abuts against the spring seat 87; when the spring cap 85 moves forward and resets due to the spring force, its cap edge 852 abuts against the clamping boss 843, and the clamping boss 843 can limit the spring cap 85 from moving forward continuously. At this time, the cap top 851 of the spring cap 85 abuts against the bushing 83.

[0066] To prevent water from flowing into the bushing 83 or flowing out of the frame 100 when the automatic cleaning and feeding mechanism 200 of the cooking machine is in operation, a sealing ring 88 is provided between the rear part of the bushing 83 and the limit sleeve 84, and the outer ring of the cap top 851 of the spring cap 85 can abut against the sealing ring 88; sealing structures (not shown in the figure) are also provided between the limit sleeve 84 and the mounting hole 101 and between the spring seat 87 and the mounting hole 101.

[0067] When the user installs the feeding mechanism 200, the support shaft 82 is first placed inside the bushing 83, and the feeding mechanism 200 is moved to the right. At this time, the support shaft 82 compresses the spring cap 85, leaving sufficient space on the left for the stepped shaft 81 to be clamped with the motor output shaft 301. After the clamping is completed, the support shaft 82 is placed inside the bushing 83, and the spring 86 automatically resets the spring cap 85 to complete the installation; when disassembling the feeding mechanism 200, the feeding mechanism 200 is moved to the right. At this time, the support shaft 82 compresses the spring cap 85, the stepped shaft 81 is disengaged from the output shaft 301, and then the support shaft 82 is pulled out from the bushing 83, and the spring cap 85 automatically resets to complete the disassembly.

[0068] The automatic limit shaft seat structure has strong sealing performance with the frame 100, which makes the disassembly and assembly of the feeding mechanism 200 convenient and without redundant manual operation steps, and can effectively improve the user experience of using the cooking machine.

[0069] 2) Automatic limit shaft seat structure II

[0070] Combined with Figure 15 and Figure 16 As shown, the shaft seat structure is successively composed of a shaft sleeve 83, a spring 86, and a spring seat 87 from front to back. The spring seat 87 is a coaxial double-cylinder structure with an open front side. Its outer cylinder 873 is fixedly connected to the frame 100, and a snap spring platform 874 is convexly provided on the inner peripheral wall of its inner cylinder 872. The front end face of the shaft sleeve 83 is provided with a shaft mounting hole. The rear part of the shaft sleeve 83 is a sleeve structure with an open rear side. A limit boss 832 is provided on the outer peripheral wall of the sleeve 831. This limit boss 832 is placed outside the frame 100, and a protruding positioning post 833 is also provided on the inner bottom surface of the sleeve 831. The sleeve 831 is sleeved on the outer peripheral wall of the inner cylinder 872, and they can move relative to each other back and forth. The front end of the shaft sleeve 83 passes through the mounting hole 101 on the frame 100, and the end of the support shaft 82 is placed in the shaft mounting hole on the front end face of the shaft sleeve 83 and can rotate freely. The spring is sleeved on the positioning post 833 and placed inside the inner cylinder 872. Its front end abuts against the inner bottom surface of the sleeve 831, and the rear end abuts against the snap spring platform 874.

[0071] The end of the support shaft 82 can squeeze the shaft sleeve 83 backward, and the shaft sleeve 83 can move backward until the inner bottom surface of the sleeve 831 abuts against the front end face of the inner cylinder 872; when the shaft sleeve 83 moves forward and resets due to the elastic force of the spring 86, the limit boss 832 abuts against the frame 100, and the limit boss 832 can limit the shaft sleeve 83 from continuing to move forward.

[0072] To prevent water from flowing into the shaft sleeve 83 or flowing out of the frame 100 when the automatic cleaning and feeding mechanism 200 of the cooking machine is working, a sealing ring (not shown in the figure) is provided between the front end face of the limit boss 832 and the mounting hole 101, and a sealing ring (not shown in the figure) is also provided between the outer cylinder 873 and the frame 100.

[0073] When the user installs the feeding mechanism 200, first place the support shaft 82 in the shaft sleeve 83, and move the feeding mechanism 200 to the right. At this time, the support shaft 82 compresses the shaft sleeve 83 and moves it to the right, leaving a surplus space on the left for the stepped shaft 81 to be clamped with the motor output shaft 301. After the clamping is completed, the spring 86 automatically resets the shaft sleeve 83 to complete the installation; when disassembling the feeding mechanism 200, move the feeding mechanism 200 to the right. At this time, the support shaft 82 compresses the shaft sleeve 83, and the stepped shaft 81 disengages from the clamping with the motor shaft. Then, take out the support shaft 82 from the shaft sleeve 83, and the spring 86 automatically resets the shaft sleeve 83 to complete the disassembly.

[0074] The automatic limit shaft seat structure has a strong sealing property with the frame 100, which makes the disassembly and assembly of the blanking mechanism 200 convenient and without redundant manual operation steps. Moreover, the structure is simple, effectively saving the internal space of the frame 100 and can effectively improve the user experience of using the cooking machine.

[0075] 3) The third automatic limit shaft seat structure

[0076] Combined with Figure 17 and Figure 18 As shown, the third automatic limit shaft seat structure adds a push-type magnetic attraction rebounder 890 on the basis of the second automatic limit structure. The rebounder 890 is fixedly connected to the rebounder installation position 875 of the inner cylinder 872. After the magnetic sheet 891 used in cooperation with the rebounder 890 is fixedly connected to the positioning column 833, the magnetic attraction part 8901 of the magnetic sheet 891 and the rebounder 890 is always in an attracted state, and the attraction force therebetween is greater than the elastic force of the spring 86. The spring 86 in the third automatic limit shaft seat structure is used to assist the rebounder 890 to eject the shaft sleeve 83 during the ejection process, reducing the influence of the frictional force between the inner surface of the sleeve 831 and the outer surface of the inner cylinder 872 during the movement of the shaft sleeve 83 and ensuring the stability of the rebounder 890 to eject the shaft sleeve 83. If the elastic force of the rebounder 890 is sufficient to smoothly eject the shaft sleeve 83, the spring 86 may not be provided.

[0077] The rebounder 890 is a commercially available product. For example, the rebounder 890 with the model ML-30SBR, and its functions and working principles will not be elaborated here.

[0078] Before installing the blanking mechanism 200, the rebounder 890 is in the initial position (if it is in the ejected position, the rebounder 890 can be pressed to the initial position). The user places the blanking mechanism 200 parallel into the frame 100 and between the motor output shaft 301 and the shaft seat structure. The support shaft 82 is first placed into the shaft sleeve 83. Move the blanking mechanism 200 to the right. At this time, the support shaft 82 compresses the shaft sleeve 83 and moves it to the right. The positioning column 833 presses the rebounder 890, causing the rebounder 890 to rebound. During the ejection process of the rebounder 890, the user engages the stepped shaft 81 with the motor output shaft 301. After the engagement is completed, at this time the rebounder 890 is in the ejected position, and the installation is completed; when disassembling the blanking mechanism 200, move the blanking mechanism 200 to the right. At this time, the support shaft 82 compresses the shaft sleeve 83, and the positioning column 833 presses the rebounder 890, causing the rebounder 890 to return to the initial position. The stepped shaft 81 is disengaged from the output shaft 301, and then the support shaft 82 is removed from the shaft sleeve 83 to complete the disassembly.

[0079] 3) Manual limit shaft seat structure

[0080] Combined with Figure 19 and Figure 20As shown in the figure, the shaft seat structure mainly consists of a shaft sleeve 83 and a limit piece 892 from front to back. The rear end of the shaft sleeve 83 is inserted into the mounting hole 101 and fixedly connected to the frame 100. A through shaft hole 835 is provided in the shaft sleeve 83, and the end of the support shaft 82 moves back and forth therein. A limit hole 834 is provided at the front of the shaft sleeve 83, which penetrates the shaft sleeve 83 radially. The limit piece 892 is inserted into the limit hole 834, and the support shaft 82 is limited to make the stepped shaft 81 and the output shaft 301 in an engaged connection state. To effectively prevent dust outside the frame 100 from entering the shaft sleeve 83, a protective cover 893 is further provided at the rear end of the shaft sleeve 83, which is fixedly connected to the frame 100. To facilitate the user to take out or insert the limit piece 892 from the limit hole 834, a handle 891 is provided at the top of the limit piece 892, and the handle 891 is always placed outside the shaft sleeve 83. To prevent water from flowing into the shaft sleeve 83 or flowing out of the frame 100 when the automatic cleaning and feeding mechanism 200 of the cooking machine is working, a sealing structure (not shown in the figure) is also provided between the shaft sleeve 83 and the mounting hole 101 and between the protective cover 893 and the mounting hole 101.

[0081] When the user installs the feeding mechanism 200, first take out the limit piece 892 from the limit hole 834, then place the support shaft 82 in the shaft sleeve 83 first, move the feeding mechanism 200 to the right, leaving enough space on the left for the stepped shaft 81 to be clamped with the motor output shaft 301. After the clamping is completed, manually insert the limit piece 892 into the limit hole 834, and the installation is completed. At this time, the stepped shaft 81 and the output shaft 301 remain in an engaged connection state; when disassembling the feeding mechanism 200, manually pull out the limit piece 892 from the limit hole 834, move the feeding mechanism 200 to the right, the stepped shaft 81 and the output shaft 301 are disengaged from the clamping, and then take out the support shaft 82 from the shaft sleeve 83 to complete the disassembly.

[0082] This manual limit shaft seat structure has strong sealing with the frame 100, its installation structure is simple, and the production cost is effectively reduced.

[0083] 5. Electromagnetic component 9

[0084] Combined Figure 1 、 Figure 2 And Figure 6 As shown in the figure, electromagnetic components 9 are provided at positions opposite to the pin posts 3. The electromagnetic components 9 are installed outside the frame 100, and a permanent magnet 94 is fixedly connected to the front end of its iron core and placed inside the frame 100. When the feeding mechanism 200 is turned 180 degrees and is in the feeding position, the electromagnetic component 9 can be used to attract the pin post 3 to open the movable baffle 2, and the ingredients in the bin fall into the frying pan 400 to complete the feeding.

[0085] Combined Figures 7 to 10As shown, the electromagnetic assembly 9 is mainly composed of two coaxial coils and an iron core. The front end of the iron core can extend forward through the coil and be placed in the frame 100, and is directly opposite to the pin 3. A permanent magnet block 94 is screwed on its front end, and the iron core can move forward and backward in the two coils. The coil used to attract and move the iron core forward is the front coil 91, and the coil used to attract and move the iron core backward is the rear coil 92. Correspondingly, a front attraction portion 931 is provided on the iron core 93 in the front coil 91, and a rear attraction portion 932 is provided on the iron core 93 in the rear coil 92. A contact ring 933 is provided on the iron core 93 at the interval between the two coils, and a spring is provided on the outer sleeve of the iron core 93. The spring can reset the iron core 93 when both coils are powered off. In order to reduce the axial space occupied by the spring when it is compressed, a conical spring 95 is preferably used, and the bottom of the conical spring 95 abuts against the rear end surface of the shell of the front coil 91, and the top abuts against the contact ring 933 on the iron core 93. The elastic force of the conical spring 95 is greater than the elastic force of the reset spring 33 on the pin 3. When the coils are not energized, when the permanent magnet block 94 on the iron core 93 is attracted to the permanent magnet 32 ​​on the pin 3, the conical spring 95 drives the pin 3 to move backward so that the front end surface of the pin 3 is accommodated in the first step 171 and the limiting ring 31 abuts against the second step 172.

[0086] Combination Figure 2 and Figure 8 As shown, when the unloading mechanism 200 is in the unloading position and the front coil 91 is energized, the front attraction portion 931 of the iron core 93 is attracted, the iron core 93 moves forward, the conical spring 95 is compressed by the abutment ring 933, and the permanent magnet block 94 attracts the permanent magnet 32 ​​on the pin 3.

[0087] like Figure 9 As shown, after the front coil 91 is powered off, the conical spring 95 resets the iron core 93 and moves it backward, and the pin 3 moves backward with the iron core 93, with its front end face placed in the first step 171. The limiting ring 31 abuts against the second step 172, and the pin 3 disengages from the movable baffle 2. The movable baffle 2 opens due to its own gravity, completing the unloading of food in the compartment.

[0088] Combination Figure 1 and Figure 10 As shown, when the unloading mechanism 200 completes unloading and returns to its original position, the movable baffle 2 covers the unloading port 14 due to gravity, the rear coil 92 is energized, and the rear attraction portion 932 of the iron core 93 is attracted, and the iron core 93 moves backward. The limiting ring 31 on the pin 3 has abutted in front of the second step 172 and cannot move backward with the iron core 93. The permanent magnet 32 ​​is disengaged from the permanent magnet block 94, and the reset spring 33 on the pin 3 resets the pin 3, the rear coil 92 is de-energized, and the reset is completed.

[0089] 6. The working process of the material discharging mechanism 200 used in the cooking machine:

[0090] The motor 300 is preferably a stepper motor. The starting position of the motor 300 is the original position of the blanking mechanism 200, and after rotating 180 degrees clockwise, it is the blanking position of the blanking mechanism 200.

[0091] The food box 43 containing food ingredients is placed in the box rack in advance. During the cooking process, when the main control center of the cooking machine issues a blanking instruction, the blanking mechanism 200 will rotate 180 degrees backward in the axial direction. The movable baffle 2 is lapped on the pin 3 due to gravity. The discharge port of the food box 43 is correspondingly buckled with the movable baffle 2. Each electromagnetic component 9 will be activated according to the requirements of the blanking instruction. The front coil 91 is energized, and the permanent magnet 32 at the front end of the iron core 93 is attracted to the permanent magnet 32 at the rear end of the pin 3. The front coil 91 is de-energized, and the pin 3 moves backward. The front end face of it is placed in the first step 171 and is separated from the movable baffle 2. The movable side of the movable baffle 2 rotates downward due to gravity and is lapped on the limiting block 53 of the material guiding groove 5. At this time, the food ingredients also slide into the frying pan 400 through the movable baffle 2 and the material guiding groove 5 due to gravity, completing the blanking of one bin. Each electromagnetic component 9 will correspondingly control each bin door to complete the blanking in an orderly manner according to the blanking instruction of the main control center.

[0092] After the cooking is completed, the main control center of the cooking machine issues a reset instruction. The blanking mechanism 200 rotates 180 degrees forward to return to the original position. Each movable baffle 2 covers the blanking port 14 due to gravity. The rear coil 92 in all the electromagnetic components 9 is energized. The permanent magnet 32 on the pin 3 is separated from the permanent magnet 94 on the iron core 93. The reset spring 33 makes the pin 3 reset. The rear coil 92 is de-energized, and the conical spring 95 makes the iron core 93 reset, completing the reset action of the blanking.

[0093] It can be understood that the blanking mechanism 200 in this embodiment is only applicable to the food box 43 with the same discharge port as the blanking port 14 of the base frame 1. If the discharge port of the food box 43 is different from that of this embodiment, the shapes, heights and sizes of the base frame 1, the box rack, the material guiding groove 5 and the movable baffle 2 can be trimmed according to the discharge port and the shape of the box body.

Claims

1. A push-pull electromagnetic component, comprising a housing, a coil disposed within the housing, and an iron core inserted into the coil, and is applied to the feeding mechanism of a cooking machine. The feeding mechanism includes a base frame and a movable baffle, and is characterized in that, Pin holes are provided on the left and right sides of the base frame. A pin is placed in the pin hole, and a return spring is sleeved outside the pin. The pin hole is a stepped hole, which includes a first step, a second step, and a third step. The inner diameter of the second step is smaller than that of the first step and the third step. The pin is placed in the first step and the second step. A limiting ring is sleeved on the front part of the pin. The limiting ring is placed in the first step and its outer diameter is larger than the inner diameter of the second step. A permanent magnet is fixedly connected to the rear end of the pin. The coil is composed of a combination of a front coil and a rear coil that are coaxial and separated. A contact ring is provided on the iron core at the interval between the front coil and the rear coil. A spring that can reset the iron core when both coils are powered off is sleeved on the iron core between the contact ring and the housing. The elastic force of the spring is greater than the elastic force of the return spring sleeved on the pin. The iron core is one piece. The rear end of the iron core passes through the front coil and is placed in the rear coil. The front end of the iron core is placed outside the housing. A permanent magnetic block is screwed to the front end of the iron core. The directions in which the two coils attract the iron core are opposite. As the two coils work alternately, the iron core can make a linear reciprocating movement in the axial direction of the front and rear coils.

2. The push-pull electromagnetic component according to claim 1, characterized in that, The housing is divided into a front housing and a rear housing. The front coil is placed in the front housing, and the rear coil is placed in the rear housing.

3. The push-pull electromagnetic component according to claim 2, characterized in that, The spring is a conical spring.

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