Bottom sealing device for disposable paper cup

Abstract

The utility model belongs to the technical field of paper cup production, and particularly relates to a disposable paper cup bottom sealing device which comprises a machine frame and a rotating part installed on the machine frame, a plurality of upper dies distributed on the circumference are arranged on the rotating part, a paper feeding part is further installed on the machine frame, a cup bottom cutting and feeding part located below the rotating part is arranged at the upper end of the machine frame, and the paper feeding part is connected with the paper feeding part. The two groups of cup bottom cutting and conveying parts are arranged and correspond to the two upper dies, and the two groups of cup bottom cutting and conveying parts are both located on a conveying path of the paper conveying part; it can be understood that the tool apron with the inner hole diameter smaller than that of the cup bottom is adopted, the cup bottom to be cut and formed is clamped when the push rod moves upwards, movement of the cup bottom in the cutting process can be avoided, and it is guaranteed that the cutting face is smooth through rotary cutting of the annular cutter; an avoiding space is formed after cutting through the displaceable connecting frame and the annular cutter, so that the electric push cylinder drives the push rod to smoothly push the cup bottom to the position where the cup bottom is clamped with the cup body.

Description

Technical Field

[0001] This utility model belongs to the field of paper cup production technology, and in particular relates to a disposable paper cup sealing device. Background Technology

[0002] Paper cups are paper containers made by mechanically processing and bonding paper made from chemical wood pulp. They are shaped like cups and are characterized by being safe, hygienic, lightweight, and convenient. They can be used in public places, restaurants, and cafeterias and are disposable items. In the production process of disposable paper cups, the cup body is first manufactured, then the circular paper piece at the bottom of the cup is stamped out, and finally the circular paper piece is fixed to the bottom of the cup body to complete the sealing of the paper cup.

[0003] A search revealed that application (publication) number 202421127555.8 discloses a sealing device for disposable paper cup production, comprising a paper feeding part and a rotating part and a sealing bottom mounted thereon, and further comprising: a frame fixedly connected to the top of the paper feeding part; wherein, a cylinder is fixedly connected to the inner side of the frame, and the output end of the cylinder is fixedly connected to a housing via a mounting plate; a positioning ring is connected to the top of the housing via an elastic part, the elastic part being used to support the positioning ring; and a top column is connected to the housing via a driving part. This device possesses technical effects such as "starting the cylinder to drive the housing and positioning ring to move upwards, causing the positioning ring to press the paper to be cut against the inner top of the frame, thereby positioning the paper, keeping the cut section of the paper flat, preventing the paper from bending during stamping, resulting in irregular shapes of the stamped cup bottom paper, and thus improving the production quality of the paper cup."

[0004] However, the cup bottom is not supported at the top during the ring cutting process. In actual cutting, especially at the end of the cutting blade, the cut cup bottom will deform and shift due to the lack of support, resulting in incomplete cutting and material residue, which ultimately affects the quality of the cup. In addition, the existing device can only cut and push one cup bottom at a time, which is inefficient.

[0005] To address the aforementioned issues, this application proposes a disposable paper cup sealing device. Utility Model Content

[0006] The purpose of this invention is to provide a disposable paper cup sealing device, which solves the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model is a disposable paper cup sealing device, including a frame and a rotating part installed on the frame. The rotating part is provided with a plurality of upper molds distributed in a circle. The frame is also equipped with a paper feeding part. The upper end of the frame is provided with a cup bottom cutting and feeding component located below the rotating part. The cup bottom cutting and feeding component is arranged in two sets and corresponds to two upper molds. Both sets of cup bottom cutting and feeding components are located on the conveying path of the paper feeding part.

[0009] The cup bottom cutting and feeding component includes a housing fixed to the frame and a connecting frame that slides horizontally in the housing. A knife holder is fixed in the connecting frame, and a ring cutter is rotatably provided inside the knife holder. A push rod is provided on the housing and connected by an electric push cylinder. The push rod is coaxial with the paper feeding hole and located directly below it. The diameter of the knife holder is smaller than the diameter of the cup bottom. When the push rod moves upward and cooperates with the knife holder, it can clamp the cup bottom part to be cut.

[0010] Furthermore, the bottom edge of the circumferential cutter protrudes from the bottom of the cutter holder, a gear ring is fixed to the top of the outer side of the circumferential cutter, and a drive gear that meshes with the gear ring is rotatably mounted on the connecting frame.

[0011] Furthermore, a cutting motor is fixed to the lower side of the connecting frame, and the output end of the cutting motor is driven by a synchronous belt pulley set.

[0012] Furthermore, one side of the connecting frame is provided with a clearance hole at the same level as the knife holder, and the clearance hole forms a passage space for the push rod and the bottom of the cup.

[0013] Furthermore, the paper feeding hole is coaxial with the upper mold, and the housing is provided with a slide for sliding the connecting frame.

[0014] Furthermore, a rack is fixed to one side of the connecting frame, a displacement motor is fixed to the outside of the housing, and a displacement gear that meshes with the rack is fixed to the output end of the displacement motor.

[0015] Furthermore, the inner diameter of the paper feeding hole is larger than the diameter of the cup bottom and the push rod.

[0016] This utility model has the following beneficial effects:

[0017] In this invention, the inner diameter of the knife holder is smaller than the diameter of the cup bottom to be cut. When the push rod moves upward, it can clamp the cup bottom to be cut, and then cut by rotating the ring cutter. This cutting method can avoid movement when cutting the cup bottom, thereby ensuring the smoothness of the cut surface.

[0018] This invention, by setting a displacement connecting frame and a ring cutter, can create an avoidance after the bottom of the cup is cut, so that the bottom of the cup can be smoothly pushed upward under the action of the electric push cylinder and push rod until it is stuck with the cup body.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0022] Figure 2 for Figure 1 Top view of the structure;

[0023] Figure 3 A schematic diagram of the bottom-cutting component of the cup, viewed from below.

[0024] Figure 4 for Figure 3 A schematic diagram of the structure in a half-section front view;

[0025] Figure 5 This is a schematic diagram of the structure when the bottom of the cup is pushed;

[0026] Figure 6 This is a partially disassembled structural diagram of the connecting frame and its connecting parts;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] In the diagram: 1. Frame; 2. Rotating part; 21. Upper mold; 3. Paper feeding part; 4. Cup bottom cutting and feeding part; 41. Housing; 411. Paper feeding hole; 412. Slide; 42. Connecting frame; 421. Knife holder; 422. Clearance hole; 423. Rack; 43. Ring cutter; 431. Gear ring; 44. Drive gear; 45. Cutting motor; 46. Synchronous belt pulley set; 47. Displacement motor; 471. Displacement gear; 48. Electric push cylinder; 49. Push rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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.

[0031] Please see Figures 1-6 As shown, this utility model is a disposable paper cup sealing device, including a frame 1 and a rotating part 2 installed on the frame 1. The rotating part 2 is provided with a plurality of upper molds 21 distributed in a circle. The frame 1 is also provided with a paper feeding part 3. The upper end of the frame 1 is provided with a cup bottom cutting and feeding part 4 located below the rotating part 2. The cup bottom cutting and feeding part 4 is provided in two sets and corresponds to two upper molds 21. Both sets of cup bottom cutting and feeding parts 4 are located on the conveying path of the paper feeding part 3. The two sets of cup bottom cutting and feeding parts 4 can simultaneously cut and push the bottom of two cups, improve efficiency, and avoid wasting paper rolls.

[0032] The cup bottom cutting and feeding component 4 includes a housing 41 fixed to the frame 1 and a connecting frame 42 that slides horizontally in the housing 41. A knife holder 421 is fixed in the connecting frame 42. A ring cutter 43 is rotatably provided inside the knife holder 421. A push rod 49 connected to the housing 41 via an electric push cylinder 48 is provided. The push rod 49 is coaxial with the paper feeding hole 411 and located directly below it. The diameter of the knife holder 421 is smaller than the diameter of the cup bottom, so that it can clamp the cup bottom to be cut during cutting in cooperation with the push rod 49, avoiding deformation of the cup bottom caused by the cutting force of the ring cutter 43. The push rod 49 moves upward and cooperates with the knife holder 421 to clamp the cup bottom part to be cut.

[0033] Among them, the bottom edge of the ring cutter 43 protrudes from the bottom of the cutter holder 421, and the length of the protruding part is greater than the thickness of the paper roll. The protruding part is used for ring cutting of the paper roll. A toothed ring 431 is fixed on the top of the outer side of the ring cutter 43. The rotatable connection between the ring cutter 43 and the toothed ring 431 and the cutter holder 421 is reduced by applying lubricating oil to ensure flexibility. The connecting frame 42 is rotatably provided with a drive gear 44 that meshes with the toothed ring 431.

[0034] The lower side of the connecting frame 42 is fixed with a cutting motor 45. The output end of the cutting motor 45 is connected to the drive gear 44 through a synchronous belt pulley set 46. The synchronous belt pulley set 46 consists of two gears and a synchronous belt. One gear is fixed coaxially with the drive gear 44, and the other is fixed to the output end of the cutting motor 45. The two gears are driven by the synchronous belt, thereby driving the drive gear 44 to rotate under the drive of the cutting motor 45.

[0035] The connecting bracket 42 has a clearance hole 422 on one side that is at the same level as the knife holder 421. The clearance hole 422 has a passage space for the push rod 49 and the bottom of the cup.

[0036] The paper feeding hole 411 is coaxial with the upper mold 21. The housing 41 is provided with a slide 412 for sliding the connecting frame 42. The slide 412 ensures that the connecting frame 42 slides horizontally and stably in the housing 41. In order to reduce friction, lubricating oil can be applied to the sliding position, or balls or rollers can be used to make the sliding smoother.

[0037] Among them, a rack 423 is fixed on one side of the connecting frame 42, and a displacement motor 47 is fixed on the outside of the housing 41. The output end of the displacement motor 47 is fixed with a displacement gear 471 that meshes with the rack 423. Through the meshing of the rack 423 and the displacement gear 471, the connecting frame 42 can be driven to slide horizontally in the slide block 412. Consequently, the knife holder 421 and the ring cutter 43 can also change positions, flexibly cooperating with the upward feeding of the push rod 49.

[0038] In order for the push rod 49 to push the cut cup bottom upward to match the cup body, the inner diameter of the paper feeding hole 411 is larger than the diameter of the cup bottom and the push rod 49.

[0039] Understandably, using a cutter holder with an inner diameter smaller than that of the cup bottom, clamping the cup bottom to be cut when the push rod moves upward, can prevent the cup bottom from moving during cutting. Combined with the rotating cutting of the ring cutter, it ensures a smooth cut surface. The movable connecting frame and the ring cutter form a clearance space after cutting, allowing the electric push cylinder to drive the push rod to smoothly push the cup bottom to the position where it engages with the cup body, combining structural reliability with operational flexibility.

[0040] A specific application of this embodiment is as follows: Under normal conditions, the paper roll is positioned between the ring cutter 43 and the push rod 49, but not in direct contact with either. When cutting is required, the electric pusher cylinder 48 moves the push rod 49 upward, pushing the paper roll upward and clamping it through contact with the cutter holder 421. At this time, the paper roll contacts the ring cutter 43. The cutting motor 45 operates, driving the drive gear 44 to rotate via the synchronous pulley set 46. The drive gear 44, through meshing with the gear ring 431, drives the ring cutter 43 to rotate, and the ring cutter 43 cuts a cup-bottom shape around the paper roll. At this time, the push rod 49 moves down a small distance, so that the push rod 49 and the bottom of the cup being cut are lower than the knife holder 421 and the ring cutter 43. The output of the displacement motor 47 drives the connecting frame 42 to slide horizontally in the slide block 412 through the meshing of the displacement gear 471 and the rack 423. The knife holder 421, the ring cutter 43 and its connecting parts move horizontally until they are misaligned with the push rod 49. Finally, the clearance hole 422 is located above the push rod 49. At this time, the electric push cylinder 48 pushes the push rod 49 and the bottom of the cup to move upward. The bottom of the cup passes through the clearance hole 422 and the housing 41 and then gets stuck with the cup body.

[0041] It should be noted that the rotating part 2, the paper feeding part 3, and the bottom sealing part in this solution are all existing publicly available technologies and are not the focus of improvement in this solution. For details on how to implement them, please refer to the prior art document of this solution, "Application No.: 202421127555.8", which will not be elaborated here.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A disposable paper cup sealing device, comprising a frame (1) and a rotating part (2) mounted on the frame (1), wherein the rotating part (2) is provided with a plurality of upper molds (21) distributed circumferentially, and a paper feeding part (3) is also mounted on the frame (1), and a cup bottom cutting and feeding component (4) located below the rotating part (2) is provided at the upper end of the frame (1), characterized in that: The cup bottom cutting components (4) are arranged in two groups and correspond to two upper dies (21), and the two groups of cup bottom cutting components (4) are located on the conveying path of the paper feeding part (3); The cup bottom cutting components (4) include a shell (41) fixed on the rack (1) and a connecting frame (42) horizontally sliding in the shell (41), a cutter seat (421) is fixed in the connecting frame (42), a ring cutter (43) is rotatably arranged in the cutter seat (421), a push rod (49) connected by an electric push cylinder (48) is arranged on the shell (41), the push rod (49) is coaxial with the paper feeding hole (411) and located directly below the paper feeding hole (411), the diameter of the cutter seat (421) is smaller than the diameter of the cup bottom, and the push rod (49) is capable of clamping the cup bottom to be cut when the push rod (49) moves upward and cooperates with the cutter seat (421).

2. A disposable paper cup bottom sealing device according to claim 1, characterized in that: The bottom edge of the ring cutter (43) protrudes from the bottom of the cutter seat (421), a gear ring (431) is fixed to the top of the outer side of the ring cutter (43), and a driving gear (44) meshing with the gear ring (431) is rotatably arranged on the connecting frame (42).

3. A disposable paper cup bottom sealer as claimed in claim 2, wherein: A cutting motor (45) is fixed to the lower end side of the connecting frame (42), and the output end of the cutting motor (45) is driven by a synchronous belt wheel set (46) to drive the driving gear (44).

4. A disposable paper cup bottom sealer as claimed in claim 1, wherein: One side of the connecting frame (42) is provided with an avoidance hole (422) at the same level as the cutter seat (421), and a passing space for the push rod (49) and the cup bottom is formed in the avoidance hole (422).

5. A disposable paper cup bottom sealer as claimed in claim 1, wherein: The paper feeding hole (411) is coaxial with the upper die (21), and a sliding seat (412) for sliding the connecting frame (42) is arranged in the shell (41).

6. A disposable paper cup bottom sealer as claimed in claim 1, wherein: One side of the connecting frame (42) is fixed with a rack (423), and the outside of the shell (41) is fixed with a displacement motor (47), the output end of the displacement motor (47) is fixed with a displacement gear (471) meshing with the rack (423).

7. A disposable paper cup bottom sealer as claimed in claim 1, wherein: The inner diameter of the paper feeding hole (411) is greater than the diameters of the cup bottom and the push rod (49).

Images