Punching die for meal box cover

Abstract

The utility model belongs to the technical field of dies, and particularly relates to a lunch box cover punching die which comprises a female die. A male die; the punching device is installed on the die core and comprises a punching cutter and an ejector rod, a cutter head of the punching cutter is of a U-shaped structure, the ejector rod is arranged in the punching cutter and can ascend and descend, and one end of the ejector rod extends out of the cutter head of the punching cutter. A meal box cover is installed in a die cavity in the female die, then the female die and the male die are assembled, a cutter head of the punching cutter can press a U-shaped hole in the meal box cover, and in the die splitting process, the ejector rod can stretch out of the cutter head of the punching cutter, so that a plastic sheet pressed out of the U-shaped hole is ejected; according to the mold, the plastic sheet at the air hole can be jacked up at one time in the process of pressing the air hole, so that the procedure of lifting up the plastic sheet by hands is omitted in the process of packing a meal box by a worker, and the packing efficiency of the worker is effectively improved. The lunch box cover is provided with an air hole, and the air hole is internally provided with a warped elastic sheet.

Description

Technical Field

[0001] The present application belongs to the field of mold technology, and in particular relates to a lunch box cover punching mold. Background Art

[0002] Lunch boxes are generally used for fast food or cooked food, and are discarded after a single use. Currently, most of the lunch boxes on the market are made of plastic thermoforming structures.

[0003] In order to prevent the steam of the hot food just out of the pot from scalding and deforming the lunch box, it is generally necessary to set a ventilation hole on the lunch box cover for ventilation. However, the ventilation holes on the existing lunch box covers are usually directly poked a hole in the lunch box cover with a corresponding mold to form the ventilation hole. However, a disadvantage of this ventilation hole is that during the takeaway delivery process, the food in the lunch box is very easy to leak out from the ventilation hole, especially when the lunch box is filled with various soups and other foods, the leakage is more obvious. In order to prevent the leakage of soup, the existing lunch box cover punching mold usually leaves the plastic sheet at the ventilation hole after the ventilation hole is punched on the lunch box cover. During use, the staff will lift up the plastic sheet at the ventilation hole by hand for ventilation, and press down the plastic sheet at the ventilation hole during the lunch box delivery process, so as to prevent the soup from leaking from the ventilation hole. However, for the lunch box packers, they need to face a large number of lunch boxes every day. Lifting the plastic sheet at the ventilation hole by hand for a long time will undoubtedly increase the workload of the staff and affect the packaging efficiency. Summary of the invention

[0004] The embodiment of the present application provides a lunch box cover punching mold and a lunch box cover. This mold can lift up the plastic sheet at the air hole at one time during the process of pressing the air hole. Therefore, when the staff packs the lunch box, the process of lifting the plastic sheet by hand is omitted, which effectively improves the staff's packing efficiency.

[0005] A lunch box cover punching mold, comprising:

[0006] A concave mold, wherein the concave mold is provided with a mold cavity for matching with a lunch box cover;

[0007] A male mold, wherein the male mold is provided with a mold core for matching with a lunch box cover;

[0008] A punching device is installed on the mold core, and the punching device includes a punching knife and a push rod. The knife head of the punching knife is a U-shaped structure, and the push rod is arranged inside the punching knife and can be extended or retracted from the knife head of the punching knife.

[0009] According to some other embodiments of the lunch box cover punching mold of the present invention, the punching device is arranged in the middle of the mold core.

[0010] According to some other embodiments of the lunch box cover punching mold of the present invention, the punching knife is a U-shaped tubular structure, the push rod is a U-shaped rod structure, and the push rod is slidably assembled inside the punching knife.

[0011] According to some other embodiments of the lunch box cover punching mold of the present utility model, the end surface of the push rod is a slope structure.

[0012] According to some other embodiments of the lunch box cover punching mold of the present utility model, the punching device also includes a first base, a second base and a fixed plate, the first base is connected to the second base via the fixed plate, an assembly channel is provided on the first base, the punching knife is inserted into the assembly channel and is fixedly connected to the fixed plate, an elastic component is provided inside the second base, the push rod is inserted into the punching knife, one end of the push rod passes through the fixed plate and is connected to the elastic component, and the other end of the push rod extends from the blade head of the punching knife.

[0013] According to some other embodiments of the lunch box cover punching mold of the present invention, a cavity is provided on the mold core, and the first base is assembled in the cavity.

[0014] According to some other embodiments of the lunch box cover punching mold of the present invention, the bottom of the mold core is connected to a mounting seat, a cavity is provided in the mounting seat, and the second base is fixed in the cavity through a bottom plate.

[0015] According to some other embodiments of the lunch box cover punching mold of the present invention, the male mold also includes a box body, the mold core and the mounting seat are both installed in the box body, and the box body is provided with an avoidance hole for avoiding the mold core.

[0016] A lunch box cover is provided with an air vent, wherein the air vent has a spring piece matching the shape of the air vent, and the spring piece is tilted.

[0017] The lunch box cover punching mold of the embodiment of the utility model has at least the following beneficial effects: during the working process, the lunch box cover is installed into the mold cavity inside the female mold, and then the female mold and the male mold are closed, the tool head of the punching knife will press out a U-shaped hole on the lunch box cover, and during the mold separation process, the push rod will extend from the tool head of the punching knife, thereby lifting the plastic sheet in the pressed U-shaped hole, when the lunch box is in use, the U-shaped hole is used for ventilation, and when the food in the lunch box is delivered, the plastic sheet is pressed into the U-shaped hole, thereby blocking the U-shaped hole. This mold can lift up the plastic sheet at the ventilation hole at one time during the process of pressing the ventilation hole. Therefore, when the staff packs the lunch box, the process of lifting the plastic sheet by hand is omitted, which effectively improves the staff's packaging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of a concave mold of a lunch box cover punching mold provided in one embodiment of the present application;

[0019] Figure 2 It is a structural schematic diagram of a male mold of a lunch box cover punching mold provided in one embodiment of the present application and an enlarged view of a part of the structure;

[0020] Figure 3 yes Figure 2 The schematic diagram of the structure after removing the box;

[0021] Figure 4 yes Figure 3 Schematic diagram of the structure after removing the mounting base. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0023] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0024] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0026] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Lunch boxes are generally used for fast food or cooked food, and are discarded after a single use. Currently, most of the lunch boxes on the market are made of plastic thermoforming structures.

[0028] In order to prevent the steam of the hot food just out of the pot from scalding and deforming the lunch box, it is generally necessary to set a ventilation hole on the lunch box cover for ventilation. However, the ventilation holes on the existing lunch box covers are usually directly poked a hole in the lunch box cover with a corresponding mold to form the ventilation hole. However, a disadvantage of this ventilation hole is that during the takeaway delivery process, the food in the lunch box is very easy to leak out from the ventilation hole, especially when the lunch box is filled with various soups and other foods, the leakage is more obvious. In order to prevent the leakage of soup, the existing lunch box cover punching mold usually leaves the plastic sheet at the ventilation hole after the ventilation hole is punched on the lunch box cover. During use, the staff will lift up the plastic sheet at the ventilation hole by hand for ventilation, and press down the plastic sheet at the ventilation hole during the lunch box delivery process, so as to prevent the soup from leaking from the ventilation hole. However, for the lunch box packers, they need to face a large number of lunch boxes every day. Lifting the plastic sheet at the ventilation hole by hand for a long time will undoubtedly increase the workload of the staff and affect the packaging efficiency.

[0029] See also Figures 1 to 4 The present application provides a lunch box cover punching mold, including a female mold 100, a male mold 200 and a punching device 300, the female mold 100 is provided with a mold cavity 101 for matching the lunch box cover, the male mold 200 is provided with a mold core 201 for matching the lunch box cover, the punching device 300 is installed on the mold core 201, the punching device 300 includes a punching knife 301 and a push rod 302, the knife head 301a of the punching knife 301 is a U-shaped structure, the push rod 302 is arranged inside the punching knife 301 and can extend or retract from the knife head 301a of the punching knife 301.

[0030] During the working process, the lunch box cover is installed into the mold cavity 101 inside the female mold 100, and then the female mold 100 and the male mold 200 are molded together, and the blade head 301a of the punch knife 301 will press a U-shaped hole on the lunch box cover. During the mold separation process, the push rod 302 will extend from the blade head 301a of the punch knife 301, thereby lifting the plastic sheet in the U-shaped hole. When the lunch box is in use, the U-shaped hole is used for ventilation. When the food in the lunch box is delivered, the plastic sheet is pressed into the U-shaped hole to block the U-shaped hole. This mold can lift the plastic sheet at the air hole at one time during the process of pressing the air hole. Therefore, when the staff packs the lunch box, the process of lifting the plastic sheet by hand is omitted, which effectively improves the staff's packaging efficiency.

[0031] In some embodiments, the punching device 300 is disposed in the middle of the mold core 201, so as to punch a hole in the middle of the lunch box cover.

[0032] In some embodiments, the punch knife 301 is a U-shaped tubular structure, the push rod 302 is a U-shaped rod structure, and the push rod 302 is slidably assembled inside the punch knife 301.

[0033] Specifically, the punching knife 301 is vertically fixed in the middle of the mold core 201 , and after the push rod 302 is assembled into the inside of the punching knife 301 , the push rod 302 can move up and down along the length direction of the punching knife 301 .

[0034] In some embodiments, the end surface 302a of the push rod 302 is a sloped structure, so that it is more convenient for the end of the push rod 302 to lift the plastic sheet in the U-shaped hole.

[0035] In some embodiments, the punching device 300 also includes a first base 303, a second base 304 and a fixed plate 305. The first base 303 and the second base 304 are connected through the fixed plate 305. The first base 303 is provided with an assembly channel. The punching knife 301 is inserted into the assembly channel and fixedly connected to the fixed plate 305. An elastic component is provided inside the second base 304. The push rod 302 is inserted into the punching knife 301. One end of the push rod 302 passes through the fixed plate 305 and is connected to the elastic component, and the other end of the push rod 302 extends from the blade head 301a of the punching knife 301.

[0036] Specifically, the first base 303 and the second base 304 are both rectangular bases, and a vertical assembly channel is provided in the middle of the first base 303. The first base 303 is fixed to the second base 304 through a fixing plate 305. The punching knife 301 is inserted into the assembly channel, and the bottom end of the punching knife 301 is fixed in the middle of the fixing plate 305. The top end of the punching knife 301 extends from the top of the first base 303. A U-shaped blade head 301a is provided at the top of the punching knife 301. The overall structure of the push rod 302 is a U-shaped columnar structure. The push rod 302 is slidably assembled in the punching knife 301. The lower end of the push rod 302 passes through the fixing plate 305 and is connected to the elastic component in the second base 304. The upper end of the push rod 302 extends from the top of the punching knife 301. Under the action of the elastic component, the end of the ejector pin 302 is always in a state of extending out of the cutter head 301a. When the mold is closed, the ejector pin 302 is pressed in from the cutter head 301a. When the mold is opened, the elastic component pushes the ejector pin 302 out of the cutter head 301a, thereby lifting the plastic sheet at the U-shaped hole and causing it to tilt up.

[0037] In some embodiments, the elastic member is a cylindrical spring.

[0038] In some embodiments, a cavity is provided on the mold core 201, and the first base 303 is assembled in the cavity.

[0039] In some embodiments, the bottom of the mold core 201 is connected to the mounting seat 306 , a cavity 306 a is provided in the mounting seat 306 , and the second base 304 is fixed in the cavity 306 a through a bottom plate 307 .

[0040] Specifically, the mounting seat 306 is connected to the mold core 201 by bolts. During the assembly process, after the second base 304 is fixed to the mounting seat 306, the first base 303 is assembled into the cavity in the middle of the mold core 201, and then the mounting seat 306 is connected to the mold core 201.

[0041] In some other embodiments, the male mold further includes a box body 202 , the mold core 201 and the mounting seat 306 are both mounted in the box body 202 , and an avoidance hole for avoiding the mold core 201 is provided on the box body 202 .

[0042] The present application also provides a lunch box cover, which is provided with a ventilation hole, in which there is a spring piece matching the shape of the ventilation hole, and the spring piece is arranged to be tilted.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Claims

1. A lunch box cover punching mold, characterized in that: include: A concave mold, wherein the concave mold is provided with a mold cavity for matching with a lunch box cover; A male mold, wherein the male mold is provided with a mold core for matching with a lunch box cover; A punching device is installed on the mold core, and the punching device includes a punching knife and a push rod. The knife head of the punching knife is a U-shaped structure, and the push rod is arranged inside the punching knife and can be extended or retracted from the knife head of the punching knife.

2. The lunch box cover punching mold according to claim 1, characterized in that: The punching device is arranged in the middle of the mold core.

3. The lunch box cover punching mold according to claim 1, characterized in that: The punching knife is a U-shaped tubular structure, the push rod is a U-shaped rod structure, and the push rod is slidably assembled inside the punching knife.

4. The lunch box cover punching mold according to claim 1, characterized in that: The end surface of the push rod is an inclined surface structure.

5. The lunch box cover punching mold according to claim 1, characterized in that: The punching device also includes a first base, a second base and a fixed plate, the first base and the second base are connected via the fixed plate, the first base is provided with an assembly channel, the punching knife is inserted into the assembly channel and is fixedly connected to the fixed plate, an elastic component is provided inside the second base, the push rod is inserted into the punching knife, one end of the push rod passes through the fixed plate and is connected to the elastic component, and the other end of the push rod extends from the blade head of the punching knife.

6. The lunch box cover punching mold according to claim 5, characterized in that: The mold core is provided with a cavity, and the first base is assembled in the cavity.

7. The lunch box cover punching mold according to claim 5, characterized in that: The bottom of the mold core is connected to a mounting seat, a cavity is provided in the mounting seat, and the second base is fixed in the cavity through a bottom plate.

8. The lunch box cover punching mold according to claim 7, characterized in that: The male mold further comprises a box body, the mold core and the mounting seat are both mounted in the box body, and the box body is provided with an avoidance hole for avoiding the mold core.

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