A processing method for hardware tableware

Abstract

The present invention relates to a method for processing hardware tableware, belonging to the technical field of hardware tableware processing, taking the point farthest from the transition connection area as the starting point, delineating the first shearing area at the starting point, selecting the first spacing area on both sides of the first shearing area, and selecting the second shearing area and the second spacing area in sequence, and then taking the connection between the transition connection area and the handle area as the starting point, along the handle area to the tail direction, and then selecting a distance of length S to continue designing the N-th shearing area and the N-1st spacing area in the same way, so that the stress distribution of the cutlery, fork and spoon tableware is uniform during shearing, solving the problem that the uneven stress distribution causes bending or deformation of the material under the shear force. The present invention optimizes the shearing process of the hardware tableware through the processing method, improves the quality of the product, avoids or reduces the generation of product burrs during processing, further improves the processing efficiency of the hardware tableware, and reduces the processing cost of the enterprise.

Description

Technical Field

[0001] The invention belongs to the technical field of hardware tableware processing, and in particular relates to a method for processing hardware tableware. Background Art

[0002] As necessities in daily life, hardware tableware such as knives, forks and spoons often appear in the fields of home and catering. At present, the processing method commonly used in the processing and production of small-sized hardware tableware such as knives, forks and spoons is: first design and manufacture the mold according to the shape and size of the hardware tableware such as knives, forks and spoons, and then place the metal sheet on the die of the mold. The punch of the mold applies pressure from above to press the metal sheet into the die, and then complete the shearing through a single shearing action to form the required tableware shape, and grind the edges of the tableware after stamping, and then polish the edges and surfaces of the tableware, and finally clean the tableware to complete the processing of the hardware tableware.

[0003] However, there are some problems with the current processing methods for hardware tableware such as knives, forks and spoons: in the process of shearing the stamped cutlery through a single shearing action, the heat generated by friction and deformation may cause the local temperature of the material to rise, affecting the yield strength and hardness of the material, resulting in uneven stress distribution, and ultimately causing the material to bend or deform under the shear force. In this case, the edge of the material may be stretched or torn to form burrs instead of producing a clean shear edge. It will take a certain amount of time to grind and deburr, which affects the processing efficiency. The dust and noise generated during the deburring process will also have an adverse effect on the working environment and endanger the health of the processing workers. In this regard, a processing method for hardware tableware is proposed, which reduces the burrs of hardware tableware such as knives, forks and spoons during stamping, thereby reducing the time for subsequent grinding and deburring and improving efficiency. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a method for processing hardware tableware, which solves the problem that in the prior art, during the shearing process of stamped cutlery, fork and spoon tableware through a single shearing action, the heat generated by friction and deformation may cause the local temperature of the material to rise, affecting the yield strength and hardness of the material, thereby causing uneven stress distribution, and ultimately causing the material to bend or deform under the action of the shear force, forming burrs.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for processing hardware tableware comprises the following steps:

[0007] S1: Perform pre-stamping preparation and place the metal sheet on the die of the die;

[0008] S2: Stamping, the punch of the mold applies pressure from above to press the metal sheet into the die to form the approximate shape of cutlery;

[0009] S3: The stamped cutlery is sheared in steps. First, the cutlery is divided into a head area, a handle area, and a transition area for connecting the head and the handle. The point on the head area that is farthest from the transition area is taken as the starting point. An area with a length of A is demarcated at the starting point as the first shearing area. Then, along the edge of the head area from the starting point to the transition area, symmetrical areas with a length of B are selected on both sides of the first shearing area as the first spacing area. Then, along the two first spacing areas toward the transition area, areas with a length of A are selected as the second shearing areas. In the direction of the transition connection area, select an area with a length of B as the second spacing area, and so on until the transition connection area and the handle area are connected, and then take the transition connection area and the handle area as the starting point, along the handle area to the tail direction, select a distance of length S and continue to design the Nth shearing area and the N-1th spacing area in the same way, then first shear the first shearing area, the second shearing area...the Nth shearing area, and then shear the first spacing area, the second spacing area...the N-1th spacing area, and finally shear the remaining area of ​​the handle area, so that the stress distribution of the cutlery is uniform when shearing;

[0010] S4: Grind and polish the edges of cutlery.

[0011] As a further solution of the present invention, the distance S in the S3 is one third of the length of the handle area.

[0012] As a further solution of the present invention, in S3, continuous shearing is used for shearing the first shearing area, the second shearing area ... the Nth shearing area, continuous shearing is used for shearing the first spacing area, the second spacing area ... the N-1th spacing area, and continuous shearing is used for shearing the remaining area of ​​the handle area.

[0013] As a further solution of the present invention, the length of B in S3 is half of the length of A.

[0014] As a further solution of the present invention, when the punched cutlery is sheared in steps in S3, the punch on the punch press is used to shear the cutlery, fork and spoon, and the width of the punch matches the shearing area with a length of B.

[0015] As a further solution of the present invention, a magnet sheet is provided on the concave mold in S2, and the metal plate is located between the magnet sheet and the convex mold.

[0016] As a further solution of the present invention, the die and the magnet sheet are connected via a plurality of elastic components, the plurality of elastic components are evenly distributed on the die, and the plurality of elastic components move synchronously.

[0017] As a further solution of the present invention, the elastic component includes a movable rod, an arc-shaped hinged rod and a sliding rod arranged on the mold body below the die. One end of the movable rod slides through the die. The two ends of the arc-shaped hinged rod are respectively hinged to the other end of the movable rod and the sliding rod. The middle of the arc of the arc-shaped hinged rod is rotatably connected to the mold through a rotating rod. When the metal sheet is pressed into the die, the movable rod drives the arc-shaped hinged rod to rotate, and the arc-shaped hinged rod drives the sliding rod to slide horizontally, thereby reducing deformation of the metal sheet pressed into the die.

[0018] As a further solution of the present invention, one end of the movable rod that passes through the die is an arc-shaped structure, and the movable rods of a plurality of the elastic components and the die can form a smooth arc surface.

[0019] The beneficial effects of the present invention are:

[0020] Based on the characteristic that cutlery such as knives, forks and spoons deform to different degrees when subjected to shear forces at different positions, the cutlery is divided into a head area, a handle area and a transition connection area for connecting the head and the handle. The point on the head area that is farthest from the transition connection area is taken as the starting point, and an area with a length of A is delineated at the starting point as the first shear area. Then, along the edge of the head area from the starting point to the transition connection area, symmetrical areas with a length of B are selected on both sides of the first shear area as the first spacing area. Then, along the two first spacing areas toward the transition connection area, areas with a length of A are respectively selected as the second shear areas. Along the two second shear areas toward the transition connection area, areas with a length of B are respectively selected. The second spacing area is then taken as the starting point at the connection between the transition connection area and the handle area, and along the handle area toward the tail direction, a distance of length S is selected to continue designing the Nth shearing area and the N-1th spacing area in the same way. Next, the first shearing area, the second shearing area...the Nth shearing area are sheared first, and then the first spacing area, the second spacing area...the N-1th spacing area are sheared, and finally the remaining area of ​​the handle area is sheared, so that the stress distribution of the cutlery is uniform during shearing, which solves the problem of bending or deformation of the material under the shear force due to uneven stress distribution, avoids the possibility of stretching or tearing the edges of the material, reduces the formation of burrs, and does not require too much time to be spent on grinding and deburring later.

[0021] The present invention optimizes the shearing process of hardware tableware through the processing method, improves the quality of the product, avoids or reduces the generation of burrs in the product during processing, further improves the processing efficiency of the hardware tableware, reduces the processing cost of the enterprise, and contributes to the production of high-quality and low-cost hardware tableware. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a structural flow chart of the processing method in the present invention;

[0024] Figure 2 It is a schematic diagram of the overall processing method of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the elastic component of the present invention.

[0026] Description of main component symbols:

[0027] In the figure: 1. mold body; 2. die; 3. punch; 4. elastic component; 41. movable rod; 42. arc-shaped hinge rod; 43. sliding rod; 5. head area; 6. handle area; 7. transition connection area. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0029] See also Figure 1 - Figure 3 This embodiment provides a method for processing hardware tableware, comprising the following steps:

[0030] S1: Perform pre-stamping preparation work, design and manufacture a mold according to the shape and size of hardware tableware such as knives, forks and spoons, and this mold is specially designed for hardware tableware such as knives, forks and spoons, and then place the metal sheet on the die 2 of the mold;

[0031] S2: stamping, applying pressure from above to the convex die 3 of the mold to press the metal sheet into the concave die 2 to form a rough shape of cutlery;

[0032] S3: The basis for dividing the areas here is that the tableware is a type of cutlery such as a knife, fork and spoon. For this type of tableware, when punching and shearing, the edge of the tableware is directly affected by the shear force and is prone to bending, especially where the edge is thin or there are protruding parts in the design, such as the front end of the knife, fork and spoon, that is, the head area 5. In addition, such as the handle area 6 of the knife, fork and spoon, especially the area close to the connection, the walls of these locations are usually thinner and are also prone to bending under the action of shear force. In the design of tableware, in order to improve comfort and aesthetics, there is often an arc transition design, such as the connection between the head area 5 and the handle area 6. These transition connection areas 7 are also prone to deformation during shearing. Based on this, the punched cutlery is sheared in steps;

[0033] However, before cutting, it is necessary to first divide the hardware tableware such as knives, forks and spoons into a head area 5, a handle area 6, and a transition connection area 7 for connecting the head and the handle. The point on the head area 5 farthest from the transition connection area 7 is taken as the starting point, and an area with a length of A is delineated at the starting point as the first cutting area. Then, along the edge of the head area 5 from the starting point to the transition connection area 7, symmetrical areas of length B are selected on both sides of the first cutting area as the first spacing area. Then, along the two first spacing areas to the transition connection area 7, areas with a length of A are selected as the second cutting area. Along the two second shearing areas to the transition connection area 7, areas with a length of B are selected as the second spacing areas. And so on, until the transition connection area 7 is connected to the handle area 6. Then, starting from the connection between the transition connection area 7 and the handle area 6, along the handle area 6 to the tail direction, a distance of length S is selected to continue to design the Nth cutting area and the N-1th spacing area in the same way. Next, the first cutting area, the second cutting area... The Nth shearing area is sheared, and then the first spacing area, the second spacing area ... the N-1th spacing area are sheared, and finally the remaining area of ​​the handle area 6 is sheared, so that the stress distribution of the cutlery is uniform when shearing; the specific length of the length A here needs to be set after comprehensive consideration of the actual length of the cutlery, fork and spoon hardware tableware to be processed and the actual material rigidity, and it is necessary to ensure that the length is the length of A, which will not affect the rigidity of the cutlery, fork and spoon hardware tableware during processing. In addition, no matter which kind of tableware is the cutlery, fork and spoon, the heads of the three are different, but the common point of the three is that the point on the head area 5 that is farthest from the transition connection area 7 is easy to find, therefore, the processing method here can be used for any kind of cutlery, fork and spoon, and the first shearing area, the second shearing area ... the Nth shearing area, among these shearing areas, except for the first shearing area which is one, the other shearing areas are two, and the first spacing area, the second spacing area ... the N-1th spacing area, these spacing areas are two, and the two identical shearing areas and spacing areas are symmetrical;

[0034] S4: Grinding and polishing the edges of cutlery. The above S1-S4 only describe some processing methods of the stamping and shearing parts when processing hardware cutlery such as cutlery. In fact, after grinding and polishing the edges of cutlery, it is necessary to clean the cutlery and complete the remaining steps before completing the entire processing. Since the remaining steps are easily known to those skilled in the art, they will not be repeated here.

[0035] At present, when processing hardware tableware such as knives, forks and spoons, a mold is first designed and manufactured according to the shape and size of the hardware tableware such as knives, forks and spoons, and then a metal sheet is placed on the die 2 of the mold, and the convex mold 3 of the mold applies pressure from above to press the metal sheet into the die 2, and then the shearing is completed by a single shearing action to form the required tableware shape, and the edge of the tableware after stamping is polished, and then the edge and surface of the tableware are polished, and finally the tableware is cleaned to complete the processing of the hardware tableware. However, there are some problems with the processing method currently used for hardware tableware such as knives, forks and spoons. For example, in the process of shearing the stamped cutlery, forks and spoons through a single shearing action, the heat generated by friction and deformation may increase the local temperature of the material, affecting the yield strength and hardness of the material, thereby causing uneven stress distribution, and ultimately causing the material to bend or deform under the action of the shear force. In this case, the edge of the material may be stretched or torn to form burrs instead of producing a clean sheared edge, and it will take a certain amount of time to grind and remove the burrs later.

[0036] In order to solve the above problems, first, according to the characteristics that different degrees of deformation occur when this type of tableware is subjected to shear force at different positions, the hardware tableware such as cutlery and fork spoons are divided into a head area 5, a handle area 6, and a transition connection area 7 for connecting the head and the handle. The point on the head area 5 that is farthest from the transition connection area 7 is taken as the starting point, and an area with a length of A is delineated at the starting point as the first shearing area. Then, along the edge of the head area 5 from the starting point to the transition connection area 7, symmetrical areas with a length of B on both sides of the first shearing area are selected as the first spacing area. Then, along the two first spacing areas toward the transition connection area 7, areas with a length of A are respectively selected as the second shearing areas. Along the two second shear areas toward the transition connection area 7, areas with a length of B are respectively selected as the second spacing areas, and so on, until the transition connection area 7 is connected to the handle area 6. The connection point between the transition connection area 7 and the handle area 6 is taken as the starting point, and along the handle area 6 toward the tail direction, a distance of length S is selected to continue designing the Nth shearing area and the N-1th spacing area in the same way. Next, the first shearing area, the second shearing area...the Nth shearing area are sheared first, and then the first spacing area, the second spacing area...the N-1th spacing area are sheared, and finally the remaining area of ​​the handle area 6 is sheared. During the intermittent shearing process, the shear force is not continuously applied to the entire material, but is distributed at a series of points. This distribution method reduces the overall deformation of the material in the shearing area, so that the stress distribution of the cutlery is uniform during shearing, which solves the problem of bending or deformation of the material under the action of the shear force due to uneven stress distribution, avoids the possibility of the edge of the material being stretched or torn, reduces the formation of burrs, and does not require too much time to be spent on grinding and deburring later.

[0037] It must be explained that intermittent shearing will produce multiple shear points on the material. The stress concentration at these points helps to localize the shearing effect, rather than subjecting the entire material to uniform shear force, thereby reducing the overall bending or deformation of the material, so that each shearing affects only a small part of the material, thereby reducing the overall deformation. In addition, intermittent shearing can provide a short rest time between each shearing, which can reduce the heat accumulation caused by continuous shearing, and thus reduce the deformation of the material caused by heat. According to the characteristics of different areas of the cutlery, fork and spoon, a matching shearing method is set up to make the stress distribution uniform. At the same time, the overall time spent on tableware stamping and shearing is saved as much as possible.

[0038] When processing cutlery, fork and spoon tableware, since the handle of the cutlery is usually a slender structure, and the diameter from the handle head to the handle tail varies greatly, the diameter of the handle is smaller at the one-third position, and the cross-sectional area here is relatively small, and the material's ability to resist deformation is relatively weak. Therefore, when subjected to external forces, the stress at this position is concentrated, and deformation is more likely to occur. In order to address this problem, in one embodiment, the distance of length S in S3 is one-third of the length of the handle area 6, and intermittent shearing is also performed on the one-third portion of the handle area 6 near the transition connection area 7 to disperse the stress, thereby avoiding stress concentration at this position and causing deformation.

[0039] However, when the cutlery is stamped and sheared, the stress inside the material will change. Since the cutlery is small in size, the internal stress of the cutlery is not fully released, which makes it easier for stress concentration to form at the edge, resulting in burrs. In order to further optimize this problem, in one embodiment, in S3, continuous shearing is used for shearing the first shearing area, the second shearing area...each of the Nth shearing area, the first spacing area, the second spacing area...each of the N-1th spacing area, and the remaining area of ​​the handle area 6 is also sheared. Through continuous shearing, the material is gradually cut off in a smaller area instead of being cut off all at once. This method can make the sheared edge smoother and reduce the generation of burrs. Here, continuous shearing is used for the remaining area of ​​the handle area 6.

[0040] This has the same meaning as performing continuous shearing on each of the first spacing area, the second spacing area, ... the N-1 spacing area. By performing continuous shearing in a smaller area, the shear force exerted on the material can be distributed over a larger area. This method can effectively disperse the stress generated during the shearing process and avoid stress concentration, thereby improving the overall strength and durability of the material. In addition, this also helps prevent cracks or fractures caused by stress concentration during processing.

[0041] Furthermore, during the shearing process, if the shearing spacing is too large, the shearing force may produce a higher stress peak at a certain point, which may cause material damage. A smaller shearing spacing helps to reduce this stress peak and keep the stress at a relatively stable level. In one embodiment, the length of B in S3 is half the length of A. Here, the shearing edge is made tighter by a relatively short shearing spacing, thereby improving the stability of the edge and preventing displacement or deformation during the shearing process. When the length of B is selected to be half the length of A, it is convenient to operate the equipment during shearing, thereby simplifying the difficulty of shearing.

[0042] In order to further avoid stress concentration during stamping and shearing of the cutlery, in one embodiment, when the stamped cutlery is sheared in steps in S3, a punch on a punch press is used to shear the cutlery, and the width of the punch matches the shearing area with a length of B. Here, the width of the punch matches the shearing area with a length of B, which means that the width of the punch needs to be smaller than the width of the shearing area with a length of B, so that the stress concentration during shearing is further reduced through continuous shearing.

[0043] It is worth mentioning that when the cutlery is stamped, the metal sheet is placed on the die 2 of the mold, and the convex mold 3 of the mold applies pressure from above to press the metal sheet into the die 2. During this process, if the gap between the die 2 and the convex mold 3 is too large, the cutlery will be deformed. If the gap between the die 2 and the convex mold 3 is too small, the friction between the convex mold 3 and the die 2 may increase, resulting in scratches or damage on the surface of the metal sheet. In order to solve this problem, in one embodiment, a magnet sheet is provided on the die 2 in S2. The size and shape of the magnet sheet will also affect its magnetism. The larger the size, the stronger the magnetic force. In addition, a specific shape design can make the magnetic field More concentrated, improve the magnetism of the magnet, the metal sheet is located between the magnet sheet and the punch 3, firstly, the magnet sheet can make the metal sheet be subjected to extrusion force during stamping, and the upward force is neutralized by the magnet sheet, so that the die 2 and the metal sheet are more closely fitted, thereby reducing the gap between the die 2 and the metal sheet. In addition, the die 2 and the magnet sheet are connected by a plurality of elastic components 4, and the plurality of elastic components 4 are evenly distributed on the die 2, and the plurality of elastic components 4 move synchronously, and the elastic components 4 can avoid the gap between the die 2 and the punch 3 being too small, resulting in the friction between the punch 3 and the die 2 may increase, resulting in scratches or damage on the surface of the metal sheet;

[0044] In addition, the elastic component 4 includes a movable rod 41, an arc-shaped hinged rod 42 and a sliding rod 43 arranged on the mold body 1 below the die 2. One end of the movable rod 41 slides through the die 2, and the two ends of the arc-shaped hinged rod 42 are respectively hinged to the other end of the movable rod 41 and the sliding rod 43. The arc-shaped middle of the arc-shaped hinged rod 42 is rotatably connected to the mold through a rotating rod. When the metal sheet is pressed into the die 2, the movable rod 41 drives the arc-shaped hinged rod 42 to rotate, and the arc-shaped hinged rod 42 drives the sliding rod 43 to slide horizontally, so that the metal sheet pressed into the die 2 is reduced in deformation. Since the stamping depth of this type of tableware is different at different positions during stamping, the elastic component 4 here is designed along the center line of this type of tableware, and the length of the movable rod 41 of the elastic component 4 is different at different positions, but the movable rod 41, the arc-shaped hinged rod 42 and the sliding rod 43 in all the elastic components 4 move synchronously. All elastic components 4 share a sliding rod 43. There is a magnet sheet above the movable rod 41. The sliding rod 43 is arranged horizontally. When the metal sheet is pressed into the die 2, the magnet sheet squeezes the movable rod 41 to move. The movable rod 41 drives the arc-shaped hinged rod 42 to rotate, and the arc-shaped hinged rod 42 drives the sliding rod 43 to slide horizontally. In addition, although the design of the movable rod 41 can avoid the gap between the die 2 and the punch 3 being too small, the existence of the movable rod 41 cannot interfere with the bottom of the cutlery such as the fork and spoon when stamping, thereby affecting the shape of the cutlery. In this regard, in another embodiment, one end of the movable rod 41 that passes through the die 2 is an arc structure, and the movable rods 41 of several elastic components 4 and the die 2 can form a smooth arc surface. The design of the movable rod 41 here ensures that the movable rod 41 is flush with the bottom surface of the die 2, forming a smooth surface, thereby avoiding the movable rod 41 from interfering with the bottom of the cutlery such as the fork and spoon when stamping.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for processing hardware tableware, characterized in that: The following steps are involved: S1: Pre-punching preparation, perform pre-punching preparation work and place the metal sheet on the die of the mold; S2: Stamping, the punch of the mold applies pressure from above to press the metal sheet into the die to form the approximate shape of cutlery; S3: Cutting of cutlery: Cutting the stamped cutlery in steps. First, the cutlery is divided into a head area, a handle area, and a transition area for connecting the head and the handle. The point on the head area that is farthest from the transition area is taken as the starting point. An area with a length of A is demarcated at the starting point as the first cutting area. Then, along the edge of the head area from the starting point to the transition area, symmetrical areas with a length of B are selected on both sides of the first cutting area as the first spacing area. Then, along the two first spacing areas toward the transition area, areas with a length of A are selected as the second cutting areas. From the domain to the transition connection area, select an area with a length of B as the second spacing area, and so on until the transition connection area and the handle area are connected, and then take the transition connection area and the handle area as the starting point, along the handle area to the tail direction, select a distance of length S and continue to design the Nth shearing area and the N-1th spacing area in the same way, then first shear the first shearing area, the second shearing area...the Nth shearing area, and then shear the first spacing area, the second spacing area...the N-1th spacing area, and finally shear the remaining area of ​​the handle area, so that the stress distribution of the cutlery is uniform when shearing; S4: Surface treatment, grinding and polishing the edges of cutlery.

2. A method for processing hardware tableware according to claim 1, characterized in that: The distance of length S in S3 is one third of the length of the handle region.

3. The method for processing hardware tableware according to claim 1, characterized in that: In S3, continuous shearing is used for shearing the first shearing area, the second shearing area ... the Nth shearing area, the first spacing area, the second spacing area ... the N-1th spacing area, and the remaining area of ​​the handle area is also sheared.

4. The method for processing hardware tableware according to claim 1, characterized in that: The length of B in S3 is half the length of A.

5. The method for processing hardware tableware according to claim 1, characterized in that: When the punched cutlery is sheared in steps in S3, the punch on the punch press is used to shear the cutlery, fork and spoon, and the width of the punch matches the shearing area with a length of B.

6. The method for processing hardware tableware according to claim 1, characterized in that: A magnet sheet is arranged on the concave die in S2, and the metal plate is located between the magnet sheet and the convex die.

7. A method for processing hardware tableware according to claim 6, characterized in that: The die and the magnet sheet are connected via a plurality of elastic components, the plurality of elastic components are evenly distributed on the die, and the plurality of elastic components move synchronously.

8. The method for processing hardware tableware according to claim 7, characterized in that: The elastic component includes a movable rod, an arc-shaped hinge rod and a sliding rod arranged on the mold body below the die. One end of the movable rod slides through the die. Both ends of the arc-shaped hinge rod are respectively hinged to the other end of the movable rod and the sliding rod. The middle of the arc of the arc-shaped hinge rod is rotatably connected to the mold through a rotating rod. When the metal sheet is pressed into the die, the movable rod drives the arc-shaped hinge rod to rotate, and the arc-shaped hinge rod drives the sliding rod to slide horizontally, so that the deformation of the metal sheet pressed into the die is reduced.

9. A method for processing hardware tableware according to claim 8, characterized in that: One end of the movable rod that passes through the female mold is an arc-shaped structure, and the movable rods of a plurality of the elastic components and the female mold can form a smooth arc surface.

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