A freezing machine for producing ice cream without food additives

Abstract

This utility model belongs to the field of ice cream production technology, and in particular to a freezing machine for producing ice cream without food additives. It includes a freezing machine body, a discharge rack located at the top front of the freezing machine body, a discharge pipe fixed to the discharge rack, and a liquid collection mechanism located directly below the discharge pipe. The liquid collection mechanism includes: a movable mounting plate slidably mounted on the freezing machine body, with a stepped groove on its top surface; a pull-out water collection trough located within the movable mounting plate, with an installation cavity adapted to the water collection trough; and a driving mechanism for driving the movable mounting plate closer to or further away from the discharge pipe. In this utility model, the existing fixed-height water collection trough is improved into an adjustable-height liquid collection mechanism. The driving mechanism drives the movable mounting plate to move up and down, achieving flexible adjustment of the distance between the liquid collection mechanism and the discharge pipe, thus solving the problems of poor container compatibility and unreliable collection in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of ice cream production technology, and in particular to a freezing machine for ice cream production that can be adapted to collection containers of different sizes by adjusting the height of the water tank, specifically a freezing machine for ice cream production without food additives. Background Technology

[0002] Ice cream without food additives refers to ice cream made solely based on the natural properties of ingredients (such as dairy products, sugars, fruits, nuts, etc.) without the addition of artificial preservatives, emulsifiers, stabilizers, colorings, flavorings, or other artificial ingredients.

[0003] Soft serve ice cream machines, also known as ice cream freezers, are automated equipment specifically designed to produce frozen ice cream. According to their uses, ice cream machines can be divided into large-scale freezers used in factory production lines and commercial ice cream machines used in the catering industry.

[0004] An ice cream freezing machine uses a compressor to compress refrigerant into a high-temperature, high-pressure gas, which is then cooled into a high-pressure liquid by a condenser. After being depressurized by an expansion valve, the liquid enters the jacket or inner wall of the freezing cylinder, absorbing heat from the ice cream mixture and lowering its temperature to achieve a cooling effect. The freezing cylinder is equipped with a scraper. When the mixture begins to freeze on the inner wall of the freezing cylinder, the blades on the scraper continuously scrape the frozen ice cream to prevent it from forming large ice crystals on the wall, while simultaneously mixing the newly introduced mixture thoroughly with the already frozen portion.

[0005] The drip tray is an important component of an ice cream freezer. It is usually located directly below the discharge pipe and fixed to the surface of the machine. It is used to collect residual liquid or to support the collection container.

[0006] For example, in the prior art, Chinese utility model patent with authorization announcement number CN210382487U discloses an "ice cream machine with noise reduction structure", which includes a base plate, support columns around the base plate, a condenser fan on the base plate, condensers on both sides of the condenser fan, a filter plate on the side of the condenser away from the condenser fan, a main freezing cylinder compressor in front of the condenser fan, a motor mounting plate above the condenser fan, a stirring motor on the motor mounting plate, and a power supply on one side of the stirring motor.

[0007] While existing ice cream machines, including those mentioned above, can meet general usage needs, the height of the water collection tank is fixed, and the distance between the water collection tank and the discharge pipe cannot be adjusted according to different collection containers. If the distance is too small, larger containers cannot be placed on top of the water collection tank, and if the distance is too large, it affects the reliability of collection and may cause residual liquid to fail to fall reliably into the water collection tank.

[0008] To address the aforementioned problems, this utility model proposes a freezing machine for ice cream production without food additives. Utility Model Content

[0009] To address the aforementioned problems in the existing technology, this utility model provides a freezer for ice cream production without food additives, which is convenient to use, easy to adjust, and has a wide range of applications.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a freezing machine for producing ice cream without food additives, comprising a freezing machine body, a discharge rack located at the top front of the freezing machine body, a discharge pipe fixed to the discharge rack, and a liquid collection mechanism located directly below the discharge pipe, wherein the liquid collection mechanism includes:

[0011] A movable mounting plate is slidably disposed on the main body of the freezer, and the top surface of the movable mounting plate is provided with a stepped groove;

[0012] A water collection tank that can be pulled out and installed within the movable mounting plate, wherein the movable mounting plate has a mounting cavity adapted to the water collection tank; and

[0013] A drive mechanism for moving the movable mounting plate closer to or away from the discharge pipe.

[0014] Preferably, the liquid collection mechanism further includes:

[0015] A guide slider fixed to one end of the movable mounting plate has a guide hole on the main body of the freezer that is adapted to the guide slider.

[0016] Preferably, the drive mechanism includes:

[0017] Two movable plates, spaced apart and fixed within the main body of the freezer;

[0018] The movable block fixed to the guide slider; and

[0019] A threaded screw disposed between the two movable plates is rotated, and the movable block is threadedly engaged with the threaded screw; it also includes...

[0020] A power mechanism for driving the rotation of the lead screw.

[0021] Preferably, the drive mechanism further includes:

[0022] A guide post is symmetrically fixed between the two movable plates, and the guide post passes through the movable block.

[0023] Preferably, the power mechanism includes:

[0024] Rotate the active synchronizing wheel located on the moving plate;

[0025] The driven synchronous pulley is fixed to the threaded screw;

[0026] A synchronous belt tensioned by the driving synchronous pulley and the driven synchronous pulley; and

[0027] A servo motor is used to drive the rotation of the active synchronous wheel, and the servo motor is fixed to the moving plate.

[0028] Preferably, it further includes a locking mechanism, the locking mechanism comprising:

[0029] A positioning block with a notch is provided, and a limiting plate is fixed to one end of the water collection tank, with the positioning block fixed to the end of the limiting plate;

[0030] A flip screw hinged to the outer wall of the movable mounting plate, the flip screw passing through the notch; and

[0031] A wing nut is installed on the extended end of the reversing screw by means of threaded engagement.

[0032] Preferably, a handle is fixed to the surface of the limiting plate.

[0033] Preferably, it further includes:

[0034] A filter screen plate is installed in the stepped groove.

[0035] Preferably, it further includes:

[0036] The first magnetic strip fixed to the bottom surface of the filter plate; and

[0037] A second magnetic strip is fixed to the bottom surface of the stepped groove, and the second magnetic strip is attracted to the first magnetic strip.

[0038] Compared with the prior art, the beneficial effects of this utility model are:

[0039] In this invention, the existing fixed-height water receiving tank is improved into an adjustable-height liquid collection mechanism. The moving mounting plate is driven up and down by a drive mechanism, which realizes flexible adjustment of the distance between the liquid collection mechanism and the discharge pipe, thus solving the problems of poor container adaptability and unreliable collection in the prior art.

[0040] Other additional advantages and benefits of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0041] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0042] Figure 1 This is a schematic diagram of the structure of this utility model;

[0043] Figure 2 This is a schematic diagram of the isometric structure of the water collection tank in this utility model;

[0044] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure of the power mechanism in the diagram;

[0045] Figure 4 This utility model Figure 2 A magnified schematic diagram of the locking mechanism in the diagram;

[0046] Figure 5 This utility model Figure 2 A magnified structural diagram at point A in the diagram.

[0047] In the diagram: 1. Freezer body; 11. Guide slide hole; 2. Discharge rack; 3. Discharge pipe; 4. Liquid collection mechanism; 41. Movable mounting plate; 411. Stepped groove; 412. Mounting cavity; 42. Water collection tank; 421. Limiting plate; 422. Handle; 43. Guide slider; 5. Drive mechanism; 51. Moving plate; 52. Moving block; 53. Threaded screw; 54. Guide column; 6. Power mechanism; 61. Active synchronous pulley; 62. Driven synchronous pulley; 63. Synchronous belt; 64. Servo motor; 7. Locking mechanism; 71. Positioning block; 711. Notch; 72. Reversing screw; 73. Wing nut; 8. Filter screen; 9. First magnetic strip; 10. Second magnetic strip. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0049] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The directions or positional relationships shown are for the purpose of describing this utility model only, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0050] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0051] Example

[0052] Please see Figures 1-5 The present invention provides the following technical solution: a freezing machine for producing ice cream without food additives, comprising a freezing machine body 1, a discharge rack 2 located at the top front of the freezing machine body 1, a discharge pipe 3 fixed to the discharge rack 2, and a liquid collection mechanism 4 located directly below the discharge pipe 3. The liquid collection mechanism 4 includes: a movable mounting plate 41 slidably mounted on the freezing machine body 1, a water collection tank 42 retractable within the movable mounting plate 41, and a drive mechanism 5 for driving the movable mounting plate 41 to move closer to or away from the discharge pipe 3.

[0053] Furthermore, by Figure 1 and Figure 2 As shown in this embodiment, the top surface of the movable mounting plate 41 is provided with a stepped groove 411, and the movable mounting plate 41 is provided with a mounting cavity 412 that is adapted to the water collection tank 42. After adopting the above solution, when it is necessary to collect the liquid discharged from the discharge pipe 3, the operator starts the drive mechanism 5 through the equipment control system and adjusts the distance between the water collection tank 42 and the discharge pipe 3 according to the size of the collection container, so that the port of the collection container and the discharge pipe 3 are kept within a suitable distance.

[0054] The stepped groove 411 on the top surface of the movable mounting plate 41 is in the shape of multiple steps. The surface of each step is inclined towards the side where the water collection tank 42 is located, forming a certain slope to facilitate the collection and flow of liquid.

[0055] When the movable mounting plate 41 moves to a suitable position directly below the discharge pipe 3 under the action of the drive mechanism 5, the liquid dripping from the discharge pipe 3 (such as condensate or other liquids generated during the freezing process of ice cream) will fall precisely onto the stepped groove 411. Due to the special structure of the stepped groove 411, the liquid will not accumulate on a certain step, but will flow down step by step along the slope of each step, and finally converge at the lowest point of the stepped groove 411, which is the position corresponding to the water collection tank 42.

[0056] The water collection tank 42 is set in the mounting cavity 412 inside the movable mounting plate 41. The size of the mounting cavity 412 is adapted to the water collection tank 42 to ensure that the water collection tank 42 can be smoothly pulled out.

[0057] When the liquid flows into the water collection tank 42 through the stepped trough 411, the water collection tank 42 collects and stores the liquid. As the production process continues, when the liquid in the water collection tank 42 reaches a certain amount, the water collection tank 42 is pulled out from the installation cavity 412 and the liquid in it is treated (such as discharged, recycled, etc.).

[0058] After processing, the water collection tank 42 is reinserted into the installation cavity 412 for the next liquid collection operation.

[0059] Throughout the entire operation, the drive mechanism 5 can precisely control the moving distance and position of the movable mounting plate 41, ensuring that the stepped trough 411 is always directly below the discharge pipe 3 at an appropriate distance, thereby achieving accurate collection of the liquid.

[0060] Meanwhile, the pull-out design of the water collection tank 42 facilitates the handling of the collected liquid by the operator, improving the ease of use and work efficiency of the equipment.

[0061] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the liquid collection mechanism 4 further includes a guide slider 43 fixed to one end of the movable mounting plate 41. A guide sliding hole 11 adapted to the guide slider 43 is provided on the freezer body 1. With the above solution, when the drive mechanism 5 drives the movable mounting plate 41 to slide, the guide slider 43 fixed to one end of it is simultaneously embedded in the guide sliding hole 11 of the freezer body 1, and the two form a precisely matched guide pair structure.

[0062] The cross-sectional shape of the guide slider 43 is perfectly matched with the inner wall contour of the guide slide hole 11, ensuring that the guide slider 43 can only slide in the preset straight line direction in the guide slide hole 11, and cannot be laterally offset or rotated.

[0063] Optionally, by Figure 1 and Figure 2 As shown, in this embodiment, the driving mechanism 5 includes: two movable plates 51 fixedly spaced within the freezer body 1, a movable block 52 fixed to the guide slider 43, and a threaded screw 53 rotatably disposed between the two movable plates 51. The movable block 52 is threadedly engaged with the threaded screw 53. The mechanism also includes a power mechanism 6 for driving the threaded screw 53 to rotate. With the above solution, when the power mechanism 6 is started, it drives the threaded screw 53 to rotate. The two ends of the threaded screw 53 are rotatably mounted on the two parallel movable plates 51 through bearings. The movable block 52 fixed to the guide slider 43 has an internal threaded hole that matches the threaded screw 53.

[0064] Therefore, when the threaded screw 53 rotates clockwise or counterclockwise under the drive of the power mechanism 6, the moving block 52 is forced to move linearly along the axis of the threaded screw 53 due to the thread engagement relationship.

[0065] During this period, the linear motion of the moving block 52 synchronously drives the guide slider 43 to slide within the guide hole 11, thereby driving the entire moving mounting plate 41 to translate along a preset trajectory.

[0066] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the driving mechanism 5 further includes: a guide post 54 symmetrically fixed between the two moving plates 51. The guide post 54 passes through the moving block 52. With the above solution, during use, the guide post 54 further guides the moving block 52, which significantly improves the stability of the moving block 52 and at the same time improves the stability of the moving mounting plate 41.

[0067] Optionally, by Figures 1-3 As shown, in this embodiment, the power mechanism 6 includes: an active synchronous wheel 61 rotatably mounted on the movable plate 51, a driven synchronous wheel 62 fixed to the threaded screw 53, a synchronous belt 63 tensioned between the active synchronous wheel 61 and the driven synchronous wheel 62, and a servo motor 64 for driving the active synchronous wheel 61 to rotate. The servo motor 64 is fixed to the movable plate 51. With the above scheme, when the servo motor 64 is powered on and started, its output shaft drives the active synchronous wheel 61 to rotate clockwise or counterclockwise, and the rotational power is transmitted to the driven synchronous wheel 62 through the tensioned synchronous belt 63.

[0068] Since the driven synchronous wheel 62 is fixed to the threaded screw 53, the rotation of the driven synchronous wheel 62 will directly drive the threaded screw 53 to rotate, and the moving block 52 will slide along the guide post 54 under the threaded rotation action.

[0069] Preferably, by Figure 1 , Figure 2 and Figure 4 As shown, this embodiment also includes a locking mechanism 7, which includes: a positioning block 71 with a notch 711, a flip screw 72 hinged to the outer wall of the movable mounting plate 41, and a wing nut 73 installed on the protruding end of the flip screw 72 by thread engagement. One end of the water collection tank 42 is fixed with a limiting plate 421, the positioning block 71 is fixed to the end of the limiting plate 421, and the flip screw 72 passes through the notch 711. With the above solution, when the water collection tank 42 is inserted into the mounting cavity 412 of the movable mounting plate 41, the positioning block 71 fixed on the limiting plate 421 at its end simultaneously enters the locking position.

[0070] Then rotate the flip screw 72 until it passes through the notch 711, and tighten the wing nut 73 at the protruding end of the flip screw 72. The axial force generated by the threaded pair will press the limiting plate 421 tightly against the movable mounting plate 41, locking the water collection tank 42 and ensuring the stability of the water collection tank 42 installation.

[0071] When it is necessary to clean the water collection tank 42, rotate the wing nut 73 in the opposite direction until it is completely loosened, and manually rotate the flip screw 72 to disengage its threaded section from the notch 711. At this time, the water collection tank 42 loses its positioning constraint and can be easily pulled out along the mounting cavity 412.

[0072] Preferably, by Figure 1 , Figure 2 and Figure 4 As shown in this embodiment, a handle 422 is fixed on the surface of the limiting plate 421. With the above solution, the water collection tank 42 can be easily pulled out from the mounting cavity 412 by the handle 422 during use.

[0073] Preferably, by Figure 1 , Figure 2 and Figure 5 As shown, this embodiment also includes a filter screen plate 8 disposed in the stepped groove 411. With the above solution, when the liquid drips from the discharge pipe 3 into the stepped groove 411 during use, it first contacts the filter screen plate 8 disposed in the groove.

[0074] During the freezing process, when the liquid discharged from the discharge pipe 3 (such as condensate, equipment lubricant residue, or accidentally mixed solid particles) flows through the filter screen plate 8, impurities with a diameter larger than the mesh (such as metal scraps or solidified ice cream residue) are intercepted on the surface of the filter screen plate 8, while the liquid components continue to flow along the slope of the stepped groove 411 to the water collection tank 42 through the mesh, effectively preventing impurities from entering the water collection tank 42.

[0075] Preferably, by Figure 1 , Figure 2 and Figure 5 As shown, this embodiment also includes: a first magnetic strip 9 fixed to the bottom surface of the filter screen plate 8 and a second magnetic strip 10 fixed to the bottom surface of the stepped groove 411. The second magnetic strip 10 and the first magnetic strip 9 are attracted to each other. With the above solution, when the filter screen plate 8 is embedded in the stepped groove 411, the first magnetic strip 9 on its bottom surface and the second magnetic strip 10 on the bottom surface of the stepped groove 411 are automatically attracted by magnetic force, which has the effect of automatic positioning, ensuring the accuracy of the installation position of the filter screen plate 8 and the stability of the installation, and also facilitating the disassembly and cleaning of the filter screen plate 8.

[0076] It should be noted that the electrical components involved in this utility model are all commercially available conventional equipment with built-in power switches. Those skilled in the art can make conventional selections according to their needs. Their working principles are common knowledge known to those skilled in the art and have been fully disclosed in the prior art, so they will not be elaborated on further in this article.

[0077] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0078] Components not described in detail in this article are existing technologies.

[0079] The working principle and usage process of this utility model: When the freezing machine of this utility model needs to collect the liquid discharged from the discharge pipe 3, the operator starts the servo motor 64 through the equipment control system and adjusts the distance between the water collection tank 42 and the discharge pipe 3 according to the size of the collection container, so that the port of the collection container and the discharge pipe 3 are kept within a suitable distance.

[0080] When the servo motor 64 is powered on and started, its output shaft drives the active synchronous pulley 61 to rotate clockwise or counterclockwise, and transmits the rotational power to the driven synchronous pulley 62 through the tensioned synchronous belt 63.

[0081] Since the driven synchronous wheel 62 is fixed to the threaded screw 53, the rotation of the driven synchronous wheel 62 will directly drive the threaded screw 53 to rotate. The moving block 52 slides along the guide post 54 under the threaded rotation action. The moving block 52 drives the moving mounting plate 41 to slide, thereby driving the water collection tank 42 to move closer to or away from the discharge pipe 3.

[0082] The stepped groove 411 on the top surface of the movable mounting plate 41 is in the shape of multiple steps. The surface of each step is inclined towards the side where the water collection tank 42 is located, forming a certain slope to facilitate the collection and flow of liquid.

[0083] When the movable mounting plate 41 moves to a suitable position directly below the discharge pipe 3 under the action of the drive mechanism 5, the liquid dripping from the discharge pipe 3 (such as condensate or other liquids generated during the freezing process of ice cream) will fall precisely onto the stepped groove 411. Due to the special structure of the stepped groove 411, the liquid will not accumulate on a certain step, but will flow down step by step along the slope of each step, and finally converge at the lowest point of the stepped groove 411, which is the position corresponding to the water collection tank 42.

[0084] The water collection tank 42 is set in the mounting cavity 412 inside the movable mounting plate 41. The size of the mounting cavity 412 is adapted to the water collection tank 42 to ensure that the water collection tank 42 can be smoothly pulled out.

[0085] When the liquid flows into the water collection tank 42 through the stepped groove 411, the water collection tank 42 collects and stores the liquid. As the production process continues, when the liquid in the water collection tank 42 reaches a certain amount, the water collection tank 42 is pulled out from the installation cavity 412 and the liquid in it is treated (such as discharged, recycled, etc.).

[0086] After processing, the water collection tank 42 is reinserted into the installation cavity 412 for the next liquid collection operation.

[0087] Throughout the entire operation, the drive mechanism 5 can precisely control the moving distance and position of the movable mounting plate 41, ensuring that the stepped trough 411 is always directly below the discharge pipe 3 at an appropriate distance, thereby achieving accurate collection of the liquid.

[0088] Meanwhile, the pull-out design of the water collection tank 42 facilitates the handling of the collected liquid by the operator, improving the ease of use and work efficiency of the equipment.

[0089] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made by those skilled in the art based on the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A freezer for producing ice cream without food additives, comprising a freezer body (1), a discharge rack (2) disposed at the top front of the freezer body (1), a discharge pipe (3) fixed to the discharge rack (2), and a liquid collection mechanism (4) located directly below the discharge pipe (3), characterized in that, The liquid collection mechanism (4) includes: A movable mounting plate (41) is slidably disposed on the main body (1) of the freezer, and a stepped groove (411) is provided on the top surface of the movable mounting plate (41). A water collection tank (42) is retractable and disposed within the movable mounting plate (41), the movable mounting plate (41) having a mounting cavity (412) adapted to the water collection tank (42); and A drive mechanism (5) for driving the movable mounting plate (41) closer to or away from the discharge pipe (3).

2. The ice cream production freezing machine without food additive according to claim 1, characterized in that: The liquid collection mechanism (4) further includes: The guide slider (43) fixed to one end of the movable mounting plate (41) has a guide sliding hole (11) on the freezer body (1) that is compatible with the guide slider (43).

3. A freezing machine for ice cream production without food additives according to claim 2, characterized in that: The drive mechanism (5) includes: Two movable plates (51) are fixed at intervals within the main body (1) of the freezer; The movable block (52) is fixed to the guide slider (43); and Rotate the threaded screw (53) located between the two movable plates (51), and the movable block (52) is threadedly engaged with the threaded screw (53); also includes A power mechanism (6) for driving the rotation of the lead screw (53).

4. A freezing machine for ice cream production without food additives according to claim 3, characterized in that: The drive mechanism (5) further includes: Guide posts (54) are symmetrically fixed between the two movable plates (51), and the guide posts (54) penetrate the movable block (52).

5. The ice cream production freezing machine without food additive according to claim 3, characterized in that: The power mechanism (6) includes: Rotate the active synchronizing wheel (61) located on the moving plate (51). Driven synchronous pulley (62) fixed to the threaded screw (53); A timing belt (63) tensioned by the driving timing pulley (61) and the driven timing pulley (62); and A servo motor (64) for driving the rotation of the active synchronous wheel (61) is fixed to the moving plate (51).

6. The ice cream production freezing machine without food additive according to claim 1, characterized in that: It also includes a locking mechanism (7), which comprises: A positioning block (71) with a notch (711) is provided, and a limiting plate (421) is fixed at one end of the water collection tank (42), and the positioning block (71) is fixed to the end of the limiting plate (421); A flip screw (72) hinged to the outer wall of the movable mounting plate (41), the flip screw (72) passing through the notch (711); and The wing nut (73) is installed on the extended end of the flip screw (72) by means of thread engagement.

7. A freezing machine for ice cream production without food additives according to claim 6, characterized in that: A handle (422) is fixed to the surface of the limiting plate (421).

8. The ice cream production freezing machine without food additive according to claim 1, characterized in that: Also includes: A filter screen (8) is disposed in the stepped groove (411).

9. A freezing machine for ice cream production without food additives according to claim 8, characterized in that: Also includes: The first magnetic strip (9) is fixed to the bottom surface of the filter screen plate (8); as well as A second magnetic strip (10) is fixed to the bottom surface of the stepped groove (411), and the second magnetic strip (10) is attracted to the first magnetic strip (9).

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