A cup mould for a cup without a base

Abstract

The utility model discloses a cup mould of bottomless cup, belongs to the technical field of printing cup mould, including cup mould axle and the cup mould body that can rotate around cup mould axle, cup mould axle one end is located in cup mould body, and the other end of cup mould axle is open end, and cup mould body is the hollow cylinder structure of two -sided open, and cup mould body is provided with annular convex and a plurality of bottom air hole away from one end of cup mould axle, is provided with the cavity in cup mould body, and bottom air hole is linked together with the cavity. The utility model has the beneficial effects that through setting up annular convex in cup mould body bottom, when printing cup is sleeved on cup mould body, annular convex is closely contacted with the non -hollow part of printing cup, and then forms partial vacuum cavity at cup bottom inner wall, and bottom air hole is linked together with the cavity, through the mode of vacuumizing, makes printing cup stable adsorption on cup mould body, guarantees the precision of printing sleeve position, effectively prevents ghosting, drag flower and other quality defects.

Description

Technical Field

[0001] This utility model belongs to the field of printed cup mold technology, and in particular relates to a cup mold for a bottomless cup. Background Technology

[0002] In the existing technology, the bottom of cups is mostly a closed structure. When printing, spraying or labeling the cup body, the cup molds used are all with end caps at the bottom. These cup molds usually have air inlet and air outlet holes on the bottom end caps. The cup is adsorbed onto the mold surface for printing by vacuuming.

[0003] However, when the bottom of the cup to be printed is hollowed out or open, the vacuum channel on the traditional bottom cap will be completely exposed, making it impossible to form an effective sealed chamber. This leads to the failure of vacuum adsorption, which makes subsequent printing, spraying, or labeling processes impossible. This severely limits the adaptability of the production process to innovative cup structures (such as double-walled cups with filters, decorative cups with open bottoms, etc.). Therefore, a cup mold for adsorption printing on special cup shapes is needed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a cup mold for a bottomless cup that can vacuum adsorb cups with hollowed-out or open bottom designs.

[0005] To achieve the above objectives, this utility model employs the following technical solution: a cup mold for a bottomless cup, comprising a cup mold shaft and a cup mold body capable of rotating around the cup mold shaft. One end of the cup mold shaft is located within the cup mold body, and the other end of the cup mold shaft is an open end. The cup mold body is a hollow cylindrical structure with openings at both ends. An annular protrusion and several bottom air inlets and outlets are provided at the end of the cup mold body away from the cup mold shaft. A cavity is provided within the cup mold body, and the bottom air inlets and outlets are connected to the cavity. A bottom end cap for sealing the bottom of the cup mold body is provided on one side of the cavity. The annular protrusion is in close contact with the non-hollowed-out portion of the bottom of the cup to be printed.

[0006] Optionally, one end of the cup mold shaft is located inside the cavity, and a first through hole is provided at that end. A second through hole is provided on the side wall of the other end of the cup mold shaft. The first through hole and the second through hole are connected, and the second through hole is used to connect an external air extraction mechanism.

[0007] Optionally, the bottom end cap is located inside the cup mold body and slides in contact with the inner wall of the cup mold body. A retaining spring is provided on the side of the bottom end cap away from the cavity to fix the bottom end cap, and a first sealing ring is provided on the side of the bottom end cap close to the cavity.

[0008] Optionally, the side wall of the cup mold body is provided with several side air inlets and outlets, which are connected to the cavity.

[0009] Optionally, the bottom air inlets and outlets are evenly distributed circumferentially, and the side air inlets and outlets are arranged in a matrix.

[0010] Optionally, some of the side air inlets and outlets are arranged in a spiral pattern.

[0011] Optionally, the side air inlet / outlet is opened at an inward angle from the outer wall of the cup mold body.

[0012] Optionally, a first bearing and a second bearing are provided between the cup mold shaft and the cup mold body. A gasket is provided on the side of the first bearing near the cavity, a second sealing ring is provided on one side of the gasket, and a spacer is provided on one side of the second sealing ring.

[0013] Optionally, a nut sleeve is connected to one end of the cup mold shaft located inside the cavity. The nut sleeve is used to sequentially press the spacer, the second sealing ring, and the gasket.

[0014] Optionally, the cup mold body includes a conical part and a cylindrical part, the cup to be printed is fitted on the outer wall of the conical part, and the second bearing is connected to the inner wall of the end of the cylindrical part.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: 1. By setting an annular protrusion at the bottom of the cup mold body, when the cup to be printed is placed on the cup mold body, the annular protrusion is in close contact with the non-perforated part of the cup to be printed, thereby forming a local vacuum cavity on the inner wall of the bottom of the cup. The air inlet and outlet at the bottom are connected to the cavity. By drawing a vacuum, the cup to be printed is stably adsorbed on the cup mold body, ensuring that there is no relative displacement between the cup and the cup mold body during the printing process, thus ensuring the accuracy of printing registration and effectively eliminating quality defects such as ghosting and smearing.

[0016] 2. This cup mold can adsorb cups of special shapes, solving the printing problem for such products. Moreover, most of the accessories of this cup mold are the same as those of traditional printing molds, maximizing the interchangeability of accessories with traditional printing molds. No additional accessories need to be purchased, which facilitates maintenance and reduces maintenance costs. Attached Figure Description

[0017] Figure 1 The diagram shown is a cross-sectional view of this utility model; Figure 2 The diagram shown is a disassembly diagram of this utility model; Figure 3 The image shown is a schematic diagram of the cup to be printed according to this utility model.

[0018] In the diagram: 1. Cup mold shaft; 101. First through hole; 102. Second through hole; 2. Cup mold body; 201. Annular protrusion; 202. Bottom air inlet / outlet hole; 203. Side air inlet / outlet hole; 3. Cavity; 4. Bottom end cap; 5. Snap ring; 6. First sealing ring; 7. First bearing; 8. Second bearing; 9. Gasket; 10. Second sealing ring; 11. Spacer; 12. Nut sleeve; 100. Cup to be printed; 200. Non-cutout part. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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. Furthermore, 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 indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1 Reference Figures 1-3This embodiment provides a cup mold for a bottomless cup, specifically including a cup mold shaft 1 and a cup mold body 2 that can rotate around the cup mold shaft 1. One end of the cup mold shaft 1 is located inside the cup mold body 2, and the other end of the cup mold shaft 1 is an open end. The cup mold body 2 is a hollow cylindrical structure with open ends. The end of the cup mold body 2 away from the cup mold shaft 1 is provided with an annular protrusion 201 and several bottom air inlet and outlet holes 202. A cavity 3 is provided inside the cup mold body 2, and the bottom air inlet and outlet holes 202 are connected to the cavity 3. A bottom end cap 4 for sealing the bottom of the cup mold body 2 is provided on one side of the cavity 3. The annular protrusion 201 is in close contact with the non-hollowed-out part 200 of the bottom of the cup 100 to be printed.

[0023] The bottom air inlet / outlet 202 is located at the bottom of the cup mold body 2 near the outer edge, and is vertically opened from the bottom of the cup mold body 2 into the cavity 3. The bottom end cap 4 is a closed end cap. The cup 100 to be printed includes a hollow part and a non-hollow part 200, and the non-hollow part 200 is located at the bottom of the cup near the outer edge.

[0024] This design eliminates the traditional end cap with air inlet and outlet holes at the bottom. The cup mold body 2 is a cylindrical body with an open bottom. An annular protrusion 201 is provided on the outer side of the bottom of the cup mold body 2, forming a ring-shaped step. This step, together with the side wall of the cup mold body 2 and the non-perforated part 200 of the cup 100 to be printed, defines an annular vacuum chamber. When the cup mold body 2 is pressed down into the cup 100 to be printed, this step structure fits tightly with the non-perforated area at the bottom of the cup, thereby creating a localized, independent, and isolated micro-vacuum environment at the bottom of the cup.

[0025] Example 2 This embodiment provides a cup mold for a bottomless cup. The difference between this embodiment and the first embodiment is that one end of the cup mold shaft 1 is located inside the cavity 3, and a first through hole 101 is provided at this end. A second through hole 102 is provided on the side wall of the other end of the cup mold shaft 1. The first through hole 101 and the second through hole 102 are connected. The second through hole 102 is used to connect an external air extraction mechanism.

[0026] The bottom end cap 4 is located inside the cup mold body 2 and slides in contact with the inner wall of the cup mold body 2. A retaining spring 5 is provided on the side of the bottom end cap 4 away from the cavity 3 to fix the bottom end cap 4. A first sealing ring 6 is provided on the side of the bottom end cap 4 close to the cavity 3. Several side air inlets and outlets 203 are provided on the side wall of the cup mold body 2, and the side air inlets and outlets 203 are connected to the cavity 3. Several bottom air inlets and outlets 202 are evenly distributed circumferentially.

[0027] Several side air inlets and outlets 203 are arranged in a matrix.

[0028] Several side air inlets and outlets 203 are arranged in a spiral pattern.

[0029] The side air inlet / outlet 203 is opened at an inward angle from the outer wall of the cup mold body 2. A first bearing 7 and a second bearing 8 are provided between the cup mold shaft 1 and the cup mold body 2. A gasket 9 is provided on the side of the first bearing 7 near the cavity 3. A second sealing ring 10 is provided on one side of the gasket 9. A spacer 11 is provided on one side of the second sealing ring 10.

[0030] The cup mold shaft 1 is connected to a nut sleeve 12 at one end inside the cavity 3. The nut sleeve 12 is used to sequentially press the spacer 11, the second sealing ring 10, and the gasket 9. The cup mold body 2 includes a conical part and a cylindrical part. The cup to be printed 100 is fitted on the outer wall of the conical part, and the second bearing 8 is connected to the inner wall of the end of the cylindrical part.

[0031] The external air extraction mechanism is an air pump, which is connected to the second through hole 102 to extract air from the cavity 3, forming a vacuum chamber in the bottom contact area between the cup mold body 2 and the cup 100 to be printed, thereby achieving an adsorption effect.

[0032] This solution transfers the traditional bottom vent to the side wall of the cup mold body 2. On the conical side wall of the cup mold body 2, a set of precise and tiny vent holes are opened according to the matrix arrangement or spiral arrangement. These vent holes penetrate the side wall of the cup mold body 2, with one end connected to the outside of the cup mold body 2 and the other end connected to the inside of the annular vacuum chamber formed by the cavity 3 and the bottom step of the cup mold body 2.

[0033] The diameters of the bottom air inlet / outlet 202 and the side air inlet / outlet 203 are precisely designed according to the application scenario, ensuring smooth airflow without leaving obvious marks on the cup surface. Even cups with hollowed-out bottoms can be stably adhered to the mold, ensuring stability and efficiency. The concentrated and uniform vacuum force within the vacuum chamber ensures no relative displacement between the cup and the mold during printing, thus guaranteeing accurate registration and effectively eliminating quality defects such as ghosting and smearing. The elimination of the complex end cap structure simplifies the mold manufacturing and assembly process, and the side wall air vents are less prone to clogging. Even if clogging occurs, it is relatively easy to clean and maintain. This design is not only suitable for cups with special structures but also for traditional solid-bottom cups, possessing good process versatility. It eliminates the need for frequent mold replacements for different cup shapes, improving equipment utilization.

[0034] In use, according to the size specifications of the cup 100 to be printed, the corresponding cup mold body 2 and cup mold shaft 1 are installed. The first sealing ring 6 is fitted onto the end of the bottom cap 4. Then, the bottom cap 4 and the first sealing ring 6 are inserted into the bottom of the cup mold body 2. The inner wall of the cup mold body 2 has a retaining spring groove. The retaining spring 5 is placed into the retaining spring groove to press the bottom cap 4 tightly. Then, the cup mold body 2 is pressed down into the cup 100 to be printed and pressed tightly. The air pump is started to draw air from the cavity 3 to ensure that the internal space of the cup mold body 2 reaches the vacuum condition, thereby adsorbing the cup 100 to be printed for subsequent printing processes. Except for the cup mold body 2 and the bottom cap 4, the other accessories used in this solution are the same as those of traditional mold accessories.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cup mold for a bottomless cup, characterized in that, The cup mold includes a cup mold shaft (1) and a cup mold body (2) that can rotate around the cup mold shaft (1). One end of the cup mold shaft (1) is located inside the cup mold body (2), and the other end of the cup mold shaft (1) is an open end. The cup mold body (2) is a hollow cylindrical structure with open ends. The end of the cup mold body (2) away from the cup mold shaft (1) is provided with an annular protrusion (201) and several bottom air inlets and outlets (202). A cavity (3) is provided inside the cup mold body (2). The bottom air inlets and outlets (202) are connected to the cavity (3). A bottom end cap (4) for sealing the bottom of the cup mold body (2) is provided on one side of the cavity (3). The annular protrusion (201) is in close contact with the non-hollowed-out part (200) of the bottom of the cup (100) to be printed.

2. The cup mold for a bottomless cup according to claim 1, characterized in that, One end of the cup mold shaft (1) is located inside the cavity (3), and a first through hole (101) is provided at this end. A second through hole (102) is provided on the side wall of the other end of the cup mold shaft (1). The first through hole (101) and the second through hole (102) are connected. The second through hole (102) is used to connect an external air extraction mechanism.

3. The cup mold for a bottomless cup according to claim 2, characterized in that, The bottom end cap (4) is located inside the cup mold body (2) and slides in contact with the inner wall of the cup mold body (2). A retaining ring (5) is provided on the side of the bottom end cap (4) away from the cavity (3) to fix the bottom end cap (4). A first sealing ring (6) is provided on the side of the bottom end cap (4) close to the cavity (3).

4. The cup mold for a bottomless cup according to claim 3, characterized in that, The cup mold body (2) has several side air inlets and outlets (203) on its side wall, and the side air inlets and outlets (203) are connected to the cavity (3).

5. The cup mold for a bottomless cup according to claim 4, characterized in that, The bottom air inlets and outlets (202) are evenly distributed circumferentially, and the side air inlets and outlets (203) are arranged in a matrix.

6. The cup mold for a bottomless cup according to claim 4, characterized in that, Several of the side air inlets and outlets (203) are arranged in a spiral pattern.

7. The cup mold for a bottomless cup according to claim 6, characterized in that, The side air inlet / outlet (203) is opened at an inward angle from the outer wall of the cup mold body (2).

8. The cup mold for a bottomless cup according to claim 3, characterized in that, A first bearing (7) and a second bearing (8) are provided between the cup mold shaft (1) and the cup mold body (2). A gasket (9) is provided on the side of the first bearing (7) near the cavity (3). A second sealing ring (10) is provided on one side of the gasket (9). A spacer (11) is provided on one side of the second sealing ring (10).

9. The cup mold for a bottomless cup according to claim 8, characterized in that, The cup mold shaft (1) is connected to a nut sleeve (12) at one end inside the cavity (3). The nut sleeve (12) is used to press the spacer (11), the second sealing ring (10) and the gasket (9) in sequence.

10. The cup mold for a bottomless cup according to claim 8, characterized in that, The cup mold body (2) includes a conical part and a cylindrical part. The cup to be printed (100) is fitted on the outer wall of the conical part, and the second bearing (8) is connected to the inner wall of the end of the cylindrical part.

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