A method and device for preparing zinc cake

Abstract

The present invention discloses a method for preparing zinc cakes and a preparation device thereof, and relates to the technical field of zinc cake processing, including a ball making machine, a diameter control template, a ball distribution machine, a moving mechanism, a guide plate group, a stamping die, a flat roller mill, a zinc cake separation device and auxiliary equipment. Each station forms a control interlock with each other to realize a continuous zinc cake preparation process flow. The zinc ball is pressed to improve the mechanical properties and quality of the product. Compared with the prior art, the present invention has the following beneficial effects: (1) The device structure is stable and reliable. (2) The punching and shearing noise is small. (3) The zinc cake has good quality, no burrs, and the mechanical properties in all directions tend to be consistent. (4) The one-time yield rate and production efficiency of the material are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of zinc cake processing, and in particular to a zinc cake preparation method and a preparation device thereof. Background Art

[0002] At present, when my country's dry battery industry produces zinc cakes for batteries, it first prepares zinc slabs, and then uses multiple zinc cake punch stamping dies to punch at least 5 zinc cakes at a time. There must be enough overlap between the punched round zinc cakes. The thicker the zinc slab, the larger the overlap. The edges of the zinc slabs have a certain size due to defects, so there is a lot of waste. The lowest one-time yield of the material is only about 52%, which not only wastes raw materials, but also increases energy and resource consumption. The punching process produces strong shear noise. There are many burrs on one side of the punched zinc cake, and the burr removal process is required to make the edge have a circular arc r transition, and r generally does not exceed 0.4mm. Other studies have shown that the mechanical properties of rolled zinc slabs are greatly different in all directions, and the longitudinal and transverse mechanical properties differ by more than one time. Therefore, when the zinc cake is punched into a cylinder, it is easy to crack and deform inconsistently, which is easy to cause defects in the zinc cylinder. Summary of the invention

[0003] 1. Technical problem to be solved by the invention

[0004] In view of the above technical problems of low yield rate, harmful noise and poor product quality, the present invention provides a method and a device for preparing zinc cakes, which can greatly improve the one-time yield rate, have no strong punching and shearing noise, no burrs, and the mechanical properties of the zinc cakes in all directions tend to be consistent.

[0005] 2. Technical solution

[0006] To solve the above problems, the technical solution provided by the present invention is:

[0007] A method for preparing a zinc cake comprises the following steps:

[0008] (1) The ball making machine takes zinc balls that meet the diameter requirements and drops them into the ball placing machine for standby use;

[0009] (2) The ball placing machine confirms that the diameter control template is at the starting position of the process and positions it, and then drops a zinc ball into each circular hole of the diameter control template;

[0010] (3) The moving mechanism confirms that the diameter control template is full of zinc balls, and then moves the diameter control template with zinc balls into the stamping die position through the guide plate group;

[0011] (4) The stamping die confirms that the diameter control template is in place and positioned, and then punches the zinc ball into a primary zinc cake;

[0012] (5) The initially formed zinc cake and the diameter control template are pushed into the flat roller mill by the moving mechanism, and the flat roller mill presses the initially formed zinc cake into a zinc cake that meets the thickness requirements;

[0013] (6) The moving mechanism pushes the zinc cake and the diameter control template together onto the support platform of the zinc cake separation device. After the zinc cake separation device confirms that the diameter control template is in place and positioned, the punch falls to separate the zinc cake and lifts it to the starting position, and the zinc cake enters the collection system;

[0014] (7) After the zinc cake is separated, the diameter control template is pushed into the auxiliary equipment by the moving mechanism, and the auxiliary equipment automatically moves the diameter control template back to the starting position of the process. The ball making machine is used to make zinc rods into zinc balls, and the diameter of the zinc balls is preset. Compared with the preparation of bearing steel balls, the precision requirements for the preparation of zinc balls are lower. The zinc rods only need two processes: cutting, punching and balling, and rounding and polishing to become zinc balls. The prepared zinc balls fall into the ball placing machine for standby. The ball placing machine is used to place the zinc balls at the corresponding positions of the diameter control template. It has a zinc ball interface, a zinc ball storage structure and a zinc ball distribution structure. The zinc ball interface receives the zinc balls and stores them in the zinc ball storage structure. The zinc ball distribution structure distributes the zinc balls at the corresponding positions of the diameter control template. The diameter control template can control the thickness and diameter of the zinc balls pressed into cakes. At this time, the temperature of the zinc balls is between 80℃ and 100℃. The diameter of the circular holes is the same as the preset diameter of the zinc cake. The circular holes are evenly distributed, and the spacing between the two holes is greater than 8mm. The spacing between the holes and the four sides is greater than 10mm. The two planes of the diameter-controlling template and the inner hole are transitioned with an arc with a radius of 0.3mm.

[0015] Optionally, step (1), step (2), step (3), step (4), step (5), step (6) and step (7) are implemented in sequence, and step (1) can be manufactured in multiple steps at one time and enter the subsequent steps to form an assembly line.

[0016] As an option, it includes a ball making machine, a diameter control template, a ball distribution machine, a moving mechanism, a guide plate group, a stamping die, a flat roller mill, a zinc cake separation device and auxiliary equipment, the outlet of the ball making machine is connected to the ball distribution machine, the outlet of the ball distribution machine is aligned with the circular hole of the diameter control template, the guide plate group is located between the stamping die, the flat roller mill and the zinc cake separation device, the diameter control template and the stamping die are matched, and the diameter control template is provided with a zinc ball limiting shaping structure. The stamping die presses the zinc ball into a zinc cake in the circular hole of the diameter control template and controls the diameter and thickness.

[0017] Optionally, the ball distributing machine is provided with a zinc ball placement structure, which matches the position of the circular hole of the diameter control template. The zinc ball placement structure of the ball distributing machine matches the position of the circular hole of the diameter control template to improve the placement efficiency, thereby improving the production efficiency of zinc cakes.

[0018] Optionally, the zinc ball limiting shaping structure is a staggered circular hole, the diameter of the circular hole is a preset diameter, and the edge of the diameter control template is provided with a groove for positioning. The groove is triangular and is used for accurate positioning of each process position.

[0019] Optionally, the moving mechanism is provided with a pushing structure, which is connected to a power mechanism. The pushing structure is connected to the power mechanism through a gear or lever structure, and is used to push the diameter control template with the zinc ball into the stamping die station, and then through the guide plate group, and then pushed to the flat roller mill, the zinc cake separation device, and the auxiliary equipment in sequence.

[0020] Optionally, the stamping die is divided into an upper die and a lower die, the stamping surfaces of the upper die and the lower die are planes, the outer edges of the upper die and the lower die coincide with the outer edges of the diameter control template, and the plane of the lower die is provided with cone pits equal in number and position to the holes of the diameter control template; the upper die is slidably connected to the stamping die body, and the lower die is fixed. The plane of the lower die is provided with cone pits equal in number and position to the holes of the diameter control template, the bottom diameter of the cone pits is 60% to 70% of the diameter of the zinc cake, and the depth of the cone pits is 0.4mm to 0.7mm. The cone pits ensure that the center of each zinc ball automatically and synchronously coincides with the center of each hole of the diameter control template during the stamping process. If the depth of the cone pits is too small, the zinc ball is not easy to position, and if it is too large, it is not conducive to the outer shape forming of the zinc cake.

[0021] Optionally, the zinc cake separation device includes a plurality of punches and a support platform. The support platform is provided with a plurality of cake-removing holes. The positions of the punches, the holes of the diameter-controlling template and the cake-removing holes correspond to each other. The zinc cake separation device is provided with a motor, which controls the punches. The punches can push out the zinc cakes in the diameter-controlling template. The aperture of the cake-removing hole is at least 1.5 mm larger than the hole of the diameter-controlling template, so that the zinc cakes can fall smoothly into the collection system when separated. The punches are provided with downward power by the zinc cake separation device to separate the zinc cakes in the diameter-controlling template on the support platform. Afterwards, the diameter-controlling template is moved to the auxiliary equipment by the moving mechanism.

[0022] Optionally, the guide plate group is located at the process starting position in front of the stamping die, the process position between the stamping die and the flat roller mill, and the bottom of the process position between the flat roller mill and the zinc cake separation device, and plays a supporting role. The guide plate group supports the diameter control template with zinc balls or pre-formed zinc cakes or zinc cakes, and guides the diameter control template into the next process.

[0023] Optionally, the auxiliary equipment includes a guide wheel and a guide rail structure or a robot. The auxiliary equipment is used to move the diameter control template after separating the zinc cake back to the starting position of the process and other moving tasks.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0026] (1) The zinc cake preparation method and preparation device proposed in the embodiments of the present application have a stable and reliable structure.

[0027] (2) The zinc cake preparation method and preparation device proposed in the embodiments of the present application have low punching and shearing noise.

[0028] (3) The zinc cake preparation method and preparation device proposed in the embodiment of the present application have good quality, no burrs, and the mechanical properties in all directions tend to be consistent.

[0029] (4) The zinc cake preparation method and preparation device proposed in the embodiments of the present application greatly improve the first-time material yield and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a schematic diagram of a process for preparing a zinc cake according to an embodiment of the present invention.

[0031] Figure 2 A schematic structural diagram of a diameter-controlling template of a zinc cake preparation device proposed in an embodiment of the present invention.

[0032] Figure 3 A schematic structural diagram of a stamping die of a zinc cake preparation device provided in an embodiment of the present invention.

[0033] 1. Diameter control template; 11. Round hole; 12. Groove; 2. Stamping die; 21. Upper punch; 22. Zinc ball; 23. Lower punch. DETAILED DESCRIPTION

[0034] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0035] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the invention are shown in the accompanying drawings. The words "first", "second", etc. described in the present invention are set for the convenience of describing the technical solution of the present invention, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present invention. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradictions or conflicts, all of which are within the scope of protection required by the present invention.

[0036] Example 1

[0037] Combined with Figure 1-3 The prepared zinc cake model is R6, with a diameter of 13 mm and a thickness of 5.5 mm. The standard thickness tolerance is +0.18 mm / -0.1 mm. Considering the conical pit of the stamping die 2, the diameter of the zinc ball 22 is calculated as 1.01 times the theoretical volume of the zinc cake, and the required diameter of the zinc ball 22 is calculated to be 11.2 mm. The diameter-to-thickness ratio of the zinc cake is 2.36.

[0038] The invention discloses a method for preparing zinc cakes, comprising a ball making machine, a diameter control template 1, a ball distributing machine, a moving mechanism, a guide plate group, a stamping die 2, a flat roller mill, a zinc cake separation device and auxiliary equipment. The ball making machine is a conventional ball making device, and a zinc rod with a post-fracture elongation of 35% is used as a raw material. The prepared zinc ball 22 has a diameter of 11.2 mm. The zinc rod becomes a zinc ball 22 after ball making and rounding and deburring, and then falls into the ball distributing machine for standby use.

[0039] The diameter control template 1 is a square with a side length of 90mm and a thickness of 5.40mm, which is the negative tolerance size of the zinc cake. There are 13 circular holes 11 in the plate with a hole diameter of 13mm. The horizontal and vertical distances of each circular hole 11 are 15mm, and the spacing between two holes is 8.21mm. The minimum spacing between the hole and the four sides is 15mm. The two planes of the diameter control template 1 and the holes are transitioned by an arc with an R of 0.3mm. The diameter control template 1 is made of mold steel with a hardness of HRc48. The triangular grooves 12 set on the four sides of the diameter control template 1 are used for precise positioning of each process position.

[0040] The ball distribution machine uses mature technology provided by the market to control the zinc ball 22, and each time a zinc ball 22 falls into each hole of the diameter control template 1 located at the starting position of the process; the moving mechanism can push the diameter control template 1 with the zinc ball 22 into the position of the stamping die 2 after confirming that a zinc ball 22 falls into each hole of the diameter control template 1, and then push it to the flat roller mill, zinc cake separation device, and auxiliary equipment station in sequence through the guide plate group. The guide plate group is set at the starting position of the process before the stamping die 2, the process position between the stamping die 2 and the flat roller mill, and the process position between the flat roller mill and the zinc cake separation device, and plays the role of supporting the diameter control template 1 with the zinc ball 22 or the initially formed zinc cake or the zinc cake, and guiding the diameter control template 1 into the next process; the stamping die 2 is divided into an upper punch 21 and a lower punch 23, which can punch the zinc ball 22 into an initially formed zinc cake. The punching surface of the upper punch 21 is a plane, which can move up and down, and the plane is consistent with the side length of the diameter control template 1. The lower punch 23 is fixed, and the punching surface of the lower punch 23 is a plane, which is consistent with the side length of the diameter control template 1. There are 13 cone pits on the plane, and the position is the same as the hole of the diameter control template 1. The bottom diameter of the cone pit is 8.5mm, and the depth of the cone pit is 0.5mm. The temperature of the zinc ball 22 during the stamping process is controlled at 90℃. When the upper punch 21 is downward, the minimum plane spacing with the lower punch 23 is 5.5mm, and the mold temperature during the stamping process is controlled at 80℃; the flat roller mill, the roller diameter is φ180mm, the roller surface width is 160mm, and the initially formed zinc ball 22 is pressed into a zinc cake with a thickness of 5.65mm; the zinc cake separation device is composed of multiple punches and support platforms. The number of punches is 13, and the position of the punches is consistent with the position of the holes of the diameter control template 1. The punch diameter is φ12mm. The support platform is equipped with 13 cake-removing holes, the positions of which are consistent with the holes of the diameter-controlling template 1, and the aperture of the cake-removing holes is φ15.5mm. The punch rod is powered downward by the zinc cake separation device to separate the zinc cakes in the diameter-controlling template 1 on the support platform. After separation, the zinc cakes fall smoothly into the collection system, and the diameter-controlling template 1 is moved to the auxiliary equipment by the moving mechanism; the auxiliary equipment, which consists of a series of conventional guide wheels and guide rails, moves the diameter-controlling template 1 after the zinc cakes are separated back to the starting position of the process.

[0041] The above preparation process is shown in Figure 1The specific steps are as follows: Step 1: The ball making mechanism takes the zinc ball 22 that meets the diameter requirements and drops it into the ball placing machine for standby; Step 2: After the ball placing machine confirms that the diameter control template 1 is at the starting position of the process and is positioned, a zinc ball 22 is dropped into each of the 113 holes of the diameter control template 1; Step 3: After the moving mechanism confirms that the diameter control template 1 is full of zinc balls 22, the diameter control template 1 with the zinc balls 22 is moved into the position of the stamping die 2 through the guide plate group; Step 4: After the stamping die 2 confirms that the diameter control template 1 is in place and positioned, the zinc ball 22 is stamped into a primary zinc cake: Step 5: Primary The zinc cake and the diameter control template 1 are pushed into the flat roller mill by the moving mechanism, and the flat roller mill presses the initially formed zinc cake into a zinc cake that meets the thickness requirements: Step 6: The zinc cake and the diameter control template 1 are pushed into the support platform of the zinc cake separation device by the moving mechanism. After the zinc cake separation device confirms that the diameter control template 1 is in place and positioned, the punch falls to separate the zinc cake and lifts it to the starting position, and the zinc cake enters the collection system: Step 7: After the zinc cake is separated, the diameter control template 1 is pushed into the auxiliary equipment by the moving mechanism, and the auxiliary equipment automatically moves the diameter control template 1 back to the starting position of the process. Specific cycle steps: Step 2, step 3, step 4, step 5, step 6, step 7, step 2... cycle in sequence, step 1 is a separate implementation step, and step 1 can produce multiple zinc balls 22 at one time. Each workstation forms a control interlock with each other to achieve a continuous zinc cake preparation process.

[0042] The diameter of the zinc ball 22 in this embodiment is smaller than the aperture of the diameter-controlling template 1. Therefore, when the stamping in step 4 starts, the thickness center line of the diameter-controlling template 1 needs to be kept coincident with the center of the zinc ball 22. During stamping, the diameter-controlling template 1 can fit with the lower punch 23 under the downward force of the upper punch 21.

[0043] Movement sequence of the diameter control template 1: at the start of the cycle, the first diameter control template 1 at the starting process position falls into the zinc ball 22 and is pushed to the next workstation by the moving mechanism. The second diameter control template 1 is moved to the starting process position by the auxiliary equipment, falls into the zinc ball 22 again, and is pushed to the next workstation by the moving mechanism. Previously, the first diameter control template 1, pushed by the second diameter control template 1, enters the subsequent workstations in sequence, that is, the previous diameter control template 1 pushes the next diameter control template 1 back one workstation, and moves in a cycle in sequence until the first diameter control template 1 is pushed into the auxiliary equipment, and the auxiliary equipment moves the diameter control template 1 back to the starting process position in a cycle.

[0044] Example 2

[0045] Combined with Figure 1-3 Compared with the technical solution of Example 1, the preparation method and preparation device of a zinc cake in this embodiment can be improved as follows:

[0046] The model of the prepared zinc cake is R3, the diameter of the zinc cake is 9.6 mm, the thickness is 6.8 mm, the standard thickness tolerance is +0.18 / -0.10 mm, considering the conical pit of the stamping die 2, the diameter of the zinc ball 22 is calculated as 1.01 times the volume of the zinc cake, and the required diameter of the zinc ball 22 is calculated to be 9.9 mm. The ratio of the diameter to the thickness of the zinc cake is 1.41.

[0047] The diameter control template 1 is a square with a side length of 140mm and a thickness of h=6.7mm, which is the negative tolerance thickness of the zinc cake. There are 41 circular holes 11 in the plate with a hole diameter of 9.6mm. The horizontal and vertical distances of each circular hole 11 are 13mm, and the minimum spacing between two holes is 8.78mm. The minimum spacing between the hole and the four sides is 18.5mm. The two planes of the diameter control template 1 and the hole are transitioned by R0.3mm arc. The diameter control template 1 is made of mold steel with a hardness of HRc50. The triangular grooves 12 set on the four sides of the diameter control template 1 are used for precise positioning of each process position. The stamping die 2 presses the zinc ball 22 into a primary zinc cake, which is 9.6mm in the figure and 6.8mm in the figure. The stamping die 2 is divided into an upper die 21 and a lower die 23. The stamping surface of the upper die 21 is a plane and can move up and down. The lower punch 23 is fixed, and the punching surface of the lower punch 23 is a plane, on which 41 conical pits are arranged, and the positions are the same as the holes of the diameter control template 1. The bottom diameter of the conical pit is 6.3mm, and the depth is 0.4mm. The temperature of the zinc ball 22 during the stamping process is controlled at 90℃. When the upper punch 21 is downward, the minimum plane spacing with the lower punch 23 is 6.8mm, and the mold temperature during the stamping process is controlled at 80℃; the flat roller mill, with a roller diameter of φ170mm and a roller surface width of 160mm, presses the initially formed zinc ball 22 into a zinc cake with a thickness of 6.9mm. The zinc cake separation device is composed of a plurality of punch rods and a support platform. The number of punch rods is 41, and the position of the punch rods is consistent with the position of the holes of the diameter control template 1. The punch rod diameter is φ8.5mm. The support platform is provided with 41 cake-removing holes, and the positions of the cake-removing holes are consistent with the holes of the diameter control template 1, and the aperture of the cake-removing holes is φ12mm. The punch rod is powered downward by the zinc cake separation device to separate the zinc cakes in the diameter control template 1 on the support platform. After separation, the zinc cakes fall smoothly into the collection system, and the diameter control template 1 is moved to the auxiliary equipment by the moving mechanism. Other steps and structures are the same as those in Example 1.

[0048] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A method for preparing a zinc cake, characterized in that: The following steps are involved: (1) The ball making machine takes zinc balls that meet the diameter requirements and drops them into the ball placing machine for standby use; (2) The ball placing machine confirms that the diameter control template is at the starting position of the process and positions it, and then drops a zinc ball into each circular hole of the diameter control template; (3) The moving mechanism confirms that the diameter control template is full of zinc balls, and then moves the diameter control template with zinc balls into the stamping die position through the guide plate group; (4) The stamping die confirms that the diameter control template is in place and positioned, and then punches the zinc ball into a primary zinc cake; (5) The initially formed zinc cake and the diameter control template are pushed into the flat roller mill by the moving mechanism, and the flat roller mill presses the initially formed zinc cake into a zinc cake that meets the thickness requirements; (6) The moving mechanism pushes the zinc cake and the diameter control template onto the support platform of the zinc cake separation device. After the zinc cake separation device confirms that the diameter control template is in place and positioned, the punch falls to separate the zinc cake and lifts it to the starting position, and the zinc cake enters the collection system; (7) After the zinc cake is separated, the diameter control template is pushed into the auxiliary equipment by the moving mechanism, and the auxiliary equipment automatically moves the diameter control template back to the starting position of the process.

2. The method for preparing zinc cake according to claim 1, characterized in that: Step (1), step (2), step (3), step (4), step (5), step (6) and step (7) are performed sequentially. Step (1) can manufacture a plurality of zinc balls at one time and enter the subsequent steps to form an assembly line.

3. The device used in the method for preparing zinc cake according to claim 1, characterized in that: It includes a ball making machine, a diameter control template, a ball distribution machine, a moving mechanism, a guide plate group, a stamping die, a flat roller mill, a zinc cake separation device and auxiliary equipment. The outlet of the ball making machine is connected to the ball distribution machine, and the outlet of the ball distribution machine is aligned with the circular hole of the diameter control template. The guide plate group is located between the stamping die, the flat roller mill and the zinc cake separation device. The diameter control template and the stamping die cooperate with each other. The diameter control template is provided with a zinc ball limiting and shaping structure. The zinc ball limiting and shaping structure is a staggered circular hole. The guide plate group is located at the process starting position in front of the stamping die, the process position between the stamping die and the flat roller mill, and the bottom of the process position between the flat roller mill and the zinc cake separation device, and plays a supporting role.

4. The device used in the method for preparing zinc cake according to claim 3, characterized in that: The ball placing machine is provided with a zinc ball placing structure, and the zinc ball placing structure matches the position of the circular hole of the diameter control template.

5. The device used in the method for preparing zinc cake according to claim 3, characterized in that: The diameter of the circular hole of the diameter-controlling template is a preset diameter, and a groove for positioning is provided on the edge of the diameter-controlling template.

6. The device used in the method for preparing zinc cake according to claim 3, characterized in that: The moving mechanism is provided with a pushing structure, and the pushing structure is connected with a power mechanism.

7. The device used in the method for preparing zinc cake according to claim 3, characterized in that: The stamping die is divided into an upper die and a lower die, the stamping surfaces of the upper die and the lower die are planes, the outer edges of the upper die and the lower die coincide with the outer edges of the diameter control template, and the plane of the lower die is provided with conical pits equal in number and position to the circular holes of the diameter control template; the upper die is slidably connected to the stamping die body, and the lower die is fixed.

8. The device used in the method for preparing zinc cake according to claim 3, characterized in that: The zinc cake separation device includes a plurality of punches and a support platform. The support platform is provided with a plurality of cake removal holes. The positions of the punches, the circular holes of the diameter control template and the cake removal holes correspond to each other. The zinc cake separation device is provided with a motor. The motor controls the punches, and the punches can push out the zinc cakes in the diameter control template.

9. The device used in the method for preparing zinc cake according to any one of claims 3 to 8, characterized in that: The auxiliary equipment includes a guide wheel and a guide rail structure or a robot arm.

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