Forming punch of paper cup
By using pre-pressing mechanism, forming mechanism and edge rolling mechanism in the paper cup forming equipment, combined with the torque feedback technology of the servo motor, the problems of short service life and unstable molding quality are solved, and an efficient and stable paper cup forming process is achieved.
Patent Information
- Application Number
- CN202420234695.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The existing cake and cup forming equipment has a short service life and unstable molding quality, resulting in low production efficiency and low yield.
The paper cup forming punch including a prepressing mechanism, a forming mechanism and a curling mechanism is adopted. The servo motor provides torque feedback to dynamically adjust the pressure. The prepressing ring, a forming head and a curling ring are combined with the external mold to achieve the paper cup Forming process.
It improves the production efficiency and quality stability of paper cup forming, extends the service life of the equipment, and improves the yield rate.
Smart Images
Figure CN222201861U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of paper cup forming, in particular to a forming punch for a paper cup. Background Art
[0002] Disposable paper cups are widely used in the food industry. They can be used to make baked cakes and desserts, and can also be used to hold various types of food snacks.
[0003] In the traditional production process of disposable paper cups, it is necessary to first roll the fan-shaped paper into a cup tube, and then glue the cup tube and the cup bottom together to form a complete paper cup. This traditional paper cup production process is complicated and inefficient. At present, some paper cups are made of a round piece of paper, which is then placed in a mold on the equipment and formed by hot pressing. The paper cups produced by this process are one-piece formed, do not require bonding, are more environmentally friendly, and have higher production efficiency. They are increasingly popular in the field of food and snacks. However, this type of paper cup forming equipment uses a cylinder as the power source for pressure forming. The piston of the cylinder is prone to wear, resulting in regular replacement or maintenance of the cylinder, which affects normal production. In addition, the pressure applied by the cylinder is unstable, resulting in unstable paper cup forming and prone to defective products.
[0004] The technical problem to be solved by the present application is: how to solve the problems of short service life and unstable molding quality of existing cake paper cup molding equipment. Utility Model Content
[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a forming punch for a paper cup, which has the characteristics of high production efficiency, stable production quality and long service life.
[0006] The technical solution adopted by the utility model is: a forming punch for a paper cup, comprising a machine base, a pre-pressing mechanism installed on the machine base, a forming mechanism and a curling mechanism;
[0007] The pre-pressing mechanism includes a pre-pressing power member arranged on the machine base, and a pre-pressing ring connected to the pre-pressing power member, and the pre-pressing power member drives the pre-pressing ring to press the pre-pressing concave die outside;
[0008] The forming mechanism includes a forming power member arranged on the machine base, and a forming pressure head connected to the forming power member by transmission, the forming pressure head is provided with a pre-pressing ring, and the forming power member drives the forming pressure head to press the external forming concave die;
[0009] The crimping mechanism comprises a crimping power member arranged on the machine base, and a crimping pressure ring which is transmission-connected to the crimping mechanism, the crimping pressure ring being arranged between the pre-pressing ring and the forming pressure head, and the crimping power member drives the crimping pressure ring to press against the outer crimping concave die;
[0010] It also includes a controller. The pre-pressing power part, the forming power part and the curling power part are all servo motors with torque feedback. The controller is electrically connected to the pre-pressing power part, the forming power part and the curling power part. The controller receives and processes the torque information fed back by the pre-pressing power part, the forming power part and the curling power part, and then dynamically adjusts the output torque of the pre-pressing power part, the forming power part and the curling power part according to the fed back torque information.
[0011] In some embodiments, the pre-stressing mechanism further includes a first push rod and a first push plate, one end of the first push rod is transmission-connected to the pre-stressing power member, and the other end is fixedly connected to the first push plate, and the pre-stressing ring is mounted on the first push plate.
[0012] In some embodiments, the prestressing mechanism also includes a first slide, which is slidably connected to the machine base, and the prestressing power component is installed on the machine base. The output shaft of the prestressing power component is connected to the first screw, and a first nut corresponding to the first screw is installed on the first slide, and the end of the first push rod away from the first push plate is connected to the first slide.
[0013] In some embodiments, the molding mechanism also includes a second push rod and a second push plate. The molding power component is installed on the first slide. One end of the second push rod is transmission connected to the molding power component, and the other end is connected to the second push plate. The molding pressure head is connected to the second push plate through a core shaft.
[0014] In some embodiments, the first push rod passes through the second push plate.
[0015] In some embodiments, the molding mechanism also includes a second slide, which is slidably connected to the machine base, the output shaft of the molding power component is connected to a second screw, a second nut matching the second screw is installed on the second slide, and the end of the second push rod away from the second push plate is connected to the second slide.
[0016] In some embodiments, the curling mechanism also includes a third push rod and a third push plate. The curling power component is installed on the second slide. One end of the third push rod is transmission connected to the curling power component, and the other end is passed through the second push plate and connected to the third push plate. The curling pressure ring is connected to the third push plate through a shaft tube.
[0017] In some embodiments, a pre-pressing ring is passed through the shaft cylinder, and an end of the core shaft away from the second push plate is passed through the third push plate and the shaft cylinder in sequence to be connected with the forming pressure head.
[0018] In some embodiments, there are two third push rods, which are arranged at intervals. The two third push rods are connected by a connecting plate at one end away from the third push plate. A third nut is installed on the connecting plate. The output shaft of the curling power part is connected to a third screw that cooperates with the third nut.
[0019] In some embodiments, a slide rail slidably matched with the first slide and the second slide is installed on the machine base, a first slider slidably connected to the slide rail is installed on the first slide, and a second slider slidably connected to the slide rail is installed on the second slide.
[0020] The beneficial effects of the utility model are as follows: the forming punch of the paper cup of the present application cooperates with the pre-pressing ring and the external pre-pressing die to flatten the round paper and pre-form it into a truncated cone-shaped cup blank, and then cooperates with the forming press head and the external forming die to press the truncated cone-shaped cup blank into a cup body, and finally cooperates with the curling ring and the external curling die to roll up the top of the cup wall of the cup body to form a cup edge, thereby obtaining a finished paper cup, and the forming process is more concise and the production is more efficient;
[0021] In addition, the forming punch of the paper cup of the present application uses a servo motor with torque feedback as a power source, and the power output is smoother, more efficient and more stable. By feeding back the torque information to the controller, the controller analyzes the fedback torque information, and then dynamically controls the output torque of the servo motor according to the fedback torque information, the torque of the servo motor can be dynamically adjusted according to the actual production situation, ensuring that the quality of the processed paper cups can remain stable and improve the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of a forming punch for a paper cup according to a preferred embodiment of the utility model;
[0023] Figure 2 for Figure 1 Another perspective structural diagram of the forming punch of the paper cup shown, wherein the base is not shown;
[0024] Figure 3 for Figure 2 The enlarged schematic diagram of the structure of the forming punch A of the paper cup is shown.
[0025] In the figure: 100, forming punch of paper cup; 10, machine base; 11, slide rail; 20, pre-pressing mechanism; 21, pre-pressing power member; 22, pre-pressing ring; 23, first push rod; 24, first push plate; 25, first slide; 30, forming mechanism; 31, forming power member; 32, forming pressure head; 33, second push rod; 34, second push plate; 35, core shaft; 36, second slide; 40, crimping mechanism; 41, crimping power member; 42, crimping pressure ring; 43, third push rod; 44, third push plate; 45, shaft cylinder; 46, connecting plate. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0029] See also Figures 1 to 3 , which is a preferred embodiment of the utility model, is a forming punch 100 for a paper cup, comprising a machine base 10, a pre-pressing mechanism 20, a forming mechanism 30, a curling mechanism 40 installed on the machine base 10, and a controller (not shown) for controlling the coordinated operation of the pre-pressing mechanism 20, the forming mechanism 30 and the curling mechanism 40.
[0030] like Figure 1 and Figure 2 As shown, the pre-pressing mechanism 20 includes a pre-pressing power member 21 arranged on the machine base 10, and a pre-pressing ring 22 which is transmission-connected to the pre-pressing power member 21, and the pre-pressing power member 21 drives the pre-pressing ring 22 to press the external pre-pressing die; the molding mechanism 30 includes a molding power member 31 arranged on the machine base 10, and a molding pressure head 32 which is transmission-connected to the molding power member 31, the molding pressure head 32 is penetrated by the pre-pressing ring 22, and the molding power member 31 drives the molding pressure head 32 to press the external molding die; the curling mechanism 40 includes a curling power member 41 arranged on the machine base 10, and a curling pressure ring 42 which is transmission-connected to the curling mechanism 40, the curling pressure ring 42 is arranged between the pre-pressing ring 22 and the molding pressure head 32, and the curling power member 41 drives the curling pressure ring 42 to press the external curling die.
[0031] In this embodiment, the pre-stressing power component 21, the forming power component 31 and the curling power component 41 are all servo motors with torque feedback. The controller is electrically connected to the pre-stressing power component 21, the forming power component 31 and the curling power component 41. The controller receives and processes the torque information fed back by the pre-stressing power component 21, the forming power component 31 and the curling power component 41, and then dynamically adjusts the output torque of the pre-stressing power component 21, the forming power component 31 and the curling power component 41 according to the fed back torque information.
[0032] The principle of the controller dynamically controlling the output torque of each power component based on the feedback torque of each power component is:
[0033] Since the thickness of each batch of paper may be different, when the thickness of a batch of paper is thinner than the thickness of standard paper, the distance that the pre-pressing ring 22, the forming pressure head 32 and the curling pressure ring 42 need to press down is larger than the normal pressing distance, and at the same time, the torque required to be output by the pre-pressing power member 21, the forming power member 31 and the curling power member 41 is smaller than the normal output torque. Therefore, when the thickness of a batch of paper is thinner than the thickness of standard paper, the controller controls the pre-pressing ring 22, the forming pressure head 32 and the curling pressure ring 42 to press down a certain distance more than the normal distance according to the feedback torque, and the torque output by the pre-pressing power member 21, the forming power member 31 and the curling power member 41 is smaller than the normal distance to avoid rupture during the paper cup forming process. When the thickness of a batch of paper is thicker than the thickness of standard paper, the distance that the pre-pressing ring 22, the forming pressure head 32 and the curling pressure ring 42 need to press down is smaller than the normal pressing distance. At the same time, the torque required to be output by the pre-pressing power member 21, the forming power member 31 and the curling power member 41 is larger than the normal output torque. Therefore, when the thickness of a batch of paper is thicker than the thickness of standard paper, the controller controls the pressing distance of the pre-pressing ring 22, the forming pressure head 32 and the curling pressure ring 42 to retreat a certain distance from the normal distance according to the feedback torque. The torque output by the pre-pressing power member 21, the forming power member 31 and the curling power member 41 is larger than normal to ensure that thicker paper can also be accurately formed.
[0034] The controller can also adjust the heating temperature of the paper according to the torque feedback from each power component. For example, when the paper is thick, a higher heating temperature and a longer heat preservation and pressure holding time are required. When the paper is thin, the heating temperature needs to be lowered and the heat preservation and pressure holding time needs to be shortened for greater efficiency. When there is no paper on the die or there are multiple sheets of paper stacked, the controller can make corresponding instructions, such as a shutdown alarm, according to the torque feedback from each power component. This is because when there is no paper on the die or there are multiple sheets of paper stacked, the torque feedback from each power component must be abnormal. At this time, a shutdown alarm can avoid damaging the mold.
[0035] like Figure 2As shown, the preloading mechanism 20 also includes a first push rod 23 and a first push plate 24. One end of the first push rod 23 is transmission-connected to the preloading power member 21, and the other end is fixedly connected to the first push plate 24. The preloading ring 22 is mounted on the first push plate 24. Further, the preloading mechanism 20 also includes a first slide 25. The first slide 25 is slidably connected to the machine base 10. The preloading power member 21 is mounted on the machine base 10. The output shaft of the preloading power member 21 is connected to a first lead screw (not marked in the figure). A first nut (not marked in the figure) corresponding to the first lead screw is mounted on the first slide 25. One end of the first push rod 23 away from the first push plate 24 is connected to the first slide 25. In order to balance the force, there are two first push rods 23, and the two first push rods 23 are respectively arranged at both ends of the first push plate 24.
[0036] Furthermore, the molding mechanism 30 further includes a second push rod 33 and a second push plate 34. The molding power member 31 is mounted on the first slide 25. One end of the second push rod 33 is in transmission connection with the molding power member 31, and the other end is connected with the second push plate 34. The molding ram 32 is connected with the second push plate 34 via a mandrel 35. Similarly, in order to balance the force, the number of the second push rods 33 is two, and the two second push rods 33 are respectively provided at the two ends of the second push plate 34.
[0037] Furthermore, the first push rod 23 passes through the second push plate 34 , and the second push plate 34 is provided with a first linear bearing (not marked in the figure) that is slidably matched with the first push rod 23 .
[0038] like Figure 2 As shown, the molding mechanism 30 also includes a second slide 36, which is slidably connected to the machine base 10, and the output shaft of the molding power member 31 is connected to a second lead screw (not marked in the figure), and a second nut (not marked in the figure) cooperating with the second lead screw is installed on the second slide 36, and the end of the second push rod 33 away from the second push plate 34 is connected to the second slide 36.
[0039] Furthermore, the hemming mechanism 40 further includes a third push rod 43 and a third push plate 44. The hemming power member 41 is mounted on the second slide 36. One end of the third push rod 43 is in transmission connection with the hemming power member 41, and the other end passes through the second push plate 34 and is connected with the third push plate 44. The hemming pressure ring 42 is connected with the third push plate 44 through a shaft cylinder 45. A second linear bearing (not shown) that is slidably matched with the third push rod 43 is mounted on the second push plate 34.
[0040] like Figure 3 As shown, the shaft cylinder 45 is penetrated by the pre-pressing ring 22, and the end of the mandrel 35 away from the second push plate 34 is penetrated by the third push plate 44 and the shaft cylinder 45 in sequence and connected to the forming pressure head 32. A sliding sleeve (not shown) is arranged inside the shaft cylinder 45 and slides with the mandrel 35.
[0041] In this embodiment, there are two third push rods 43, and the two third push rods 43 are arranged at intervals. The ends of the two third push rods 43 away from the third push plate 44 are connected by a connecting plate 46, and a third nut (not marked in the figure) is installed on the connecting plate 46. The output shaft of the curling power member 41 is connected to a third screw (not marked in the figure) that cooperates with the third nut.
[0042] like Figure 1 and Figure 2 As shown, a slide rail 11 slidably matched with a first slide 25 and a second slide 36 is installed on the machine base 10, a first slider (not marked in the figure) slidably connected to the slide rail 11 is installed on the first slide 25, and a second slider (not marked in the figure) slidably connected to the slide rail 11 is installed on the second slide 36.
[0043] like Figure 3 As shown, the bottom of the pre-pressing ring 22 is provided with a pre-formed conical surface, and the pre-formed conical surface is provided with first pre-formed grooves at intervals, and the external pre-pressing concave die is provided with a second pre-formed groove corresponding to the first pre-formed groove, and the first pre-formed groove and the second pre-formed groove cooperate to form ridges between the profiles on the cup wall to improve the strength of the paper cup. A molding surface is provided at the end of the molding head 32 away from the core shaft 35, and a plurality of first molding grooves are provided on the molding surface at intervals, and the external molding concave die is provided with second molding grooves that cooperate therewith, and the first molding groove and the second molding groove cooperate to form ridges between the profiles on the formed cup wall, which can improve the strength of the paper cup. A U-shaped guide groove is provided at the bottom of the curling ring 42, and a corresponding U-shaped groove is also provided on the external curling concave die, and the two cooperate to roll the top of the cup wall into a ring-shaped structure.
[0044] When forming a paper cup, firstly, a round paper is placed on the pre-pressing die, and the pre-pressing power member 21 drives the first slide 25 to move toward the pre-pressing die, and then drives the first push rod 23 to drive the pre-pressing ring 22 installed on the first push plate 24 to press the pre-pressing die, so that the round paper is first flattened and then pre-pressed into a truncated cone-shaped cup blank. After the pre-pressing ring 22 and the pre-pressing die are pressed into place, the second slide 36 is driven by the forming power member 31 to move toward the forming die, and then drives the second push rod 33 to drive the second push plate 34. The second push plate 34 drives the core shaft 35 to press the forming ram 32 toward the forming die, and presses the truncated cone-shaped cup blank into a cup body. After the forming ram 32 and the forming die are pressed into place, the third push rod 43 is driven by the curling power member 41 to move the third push plate 44 toward the curling die. The shaft cylinder 45 installed on the third push plate 44 drives the curling pressure ring 42 to press the curling die, and the upper edge of the cup wall of the cup body is rolled into a curling edge. After the pressing of the paper cup is completed, the various components are reset in sequence in the opposite order of the pressing.
[0045] The forming punch 100 of the paper cup of the present application cooperates with the external pre-pressing die through the pre-pressing ring 22 to flatten the round paper and pre-form it into a truncated cone-shaped cup blank, and then cooperates with the external forming die through the forming press 32 to press the truncated cone-shaped cup blank into a cup body, and finally cooperates with the external curling die through the curling ring 42 to roll up the top of the cup wall of the cup body to form a cup edge, thereby obtaining a finished paper cup, and realizing the preforming, forming and curling processes of the paper cup at one station, the forming process is simpler and the production is more efficient; in addition, the forming punch 100 of the paper cup of the present application uses a servo motor with torque feedback as a power source, and the power output is more stable and efficient, and the stability is higher. By feeding back the torque information to the controller, the controller analyzes the fed-back torque information, and then dynamically controls the output torque of the servo motor according to the fed-back torque information, so that the torque of the servo motor can be dynamically adjusted according to the actual production situation, ensuring that the quality of the processed paper cup can be kept stable and the yield rate is improved.
[0046] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A paper cup forming punch (100), comprising a machine base (10), a pre-pressing mechanism (20) mounted on the machine base (10), a forming mechanism (30) and a curling mechanism (40), characterized in that: The pre-pressing mechanism (20) comprises a pre-pressing power piece (21) arranged on a machine base (10), and a pre-pressing ring (22) connected to the pre-pressing power piece (21) by transmission, wherein the pre-pressing power piece (21) drives the pre-pressing ring (22) to press against an external pre-pressing concave die; The molding mechanism (30) comprises a molding power member (31) arranged on a machine base (10), and a molding pressure head (32) drivingly connected to the molding power member (31), wherein the molding pressure head (32) is provided with a pre-pressing ring (22), and the molding power member (31) drives the molding pressure head (32) to press against an external molding concave mold; The crimping mechanism (40) comprises a crimping power member (41) arranged on a machine base (10), and a crimping pressure ring (42) drivingly connected to the crimping mechanism (40), wherein the crimping pressure ring (42) is arranged between a pre-pressing ring (22) and a forming press head (32), and the crimping power member (41) drives the crimping pressure ring (42) to press against an external crimping concave die; The invention also includes a controller, wherein the pre-pressing power member (21), the forming power member (31) and the curling power member (41) are all servo motors with torque feedback, and the controller is electrically connected to the pre-pressing power member (21), the forming power member (31) and the curling power member (41). The controller receives and processes the torque information fed back by the pre-pressing power member (21), the forming power member (31) and the curling power member (41), and then dynamically adjusts the output torque of the pre-pressing power member (21), the forming power member (31) and the curling power member (41) according to the fed back torque information.
2. The forming punch (100) for a paper cup according to claim 1, characterized in that: The pre-pressing mechanism (20) further comprises a first push rod (23) and a first push plate (24); one end of the first push rod (23) is transmission-connected to the pre-pressing power member (21), and the other end is fixedly connected to the first push plate (24); the pre-pressing ring (22) is mounted on the first push plate (24).
3. The forming punch (100) for a paper cup according to claim 2, characterized in that: The pre-stressing mechanism (20) further comprises a first slide (25), the first slide (25) being slidably connected to the machine base (10), the pre-stressing power member (21) being mounted on the machine base (10), the output shaft of the pre-stressing power member (21) being connected to a first lead screw, a first nut corresponding to the first lead screw being mounted on the first slide (25), and an end of the first push rod (23) away from the first push plate (24) being connected to the first slide (25).
4. The forming punch (100) for a paper cup according to claim 3, characterized in that: The molding mechanism (30) further comprises a second push rod (33) and a second push plate (34); the molding power member (31) is mounted on the first slide (25); one end of the second push rod (33) is transmission-connected to the molding power member (31), and the other end is connected to the second push plate (34); the molding pressure head (32) is connected to the second push plate (34) via a core shaft (35).
5. The forming punch (100) for a paper cup according to claim 4, characterized in that: The first push rod (23) is penetrated by a second push plate (34).
6. The forming punch (100) for a paper cup according to claim 4, characterized in that: The molding mechanism (30) further comprises a second slide (36), the second slide (36) being slidably connected to the machine base (10), the output shaft of the molding power member (31) being connected to a second lead screw, a second nut cooperating with the second lead screw being mounted on the second slide (36), and the second push rod (33) being connected to the second slide (36) at one end away from the second push plate (34).
7. The forming punch (100) for a paper cup according to claim 6, characterized in that: The curling mechanism (40) further comprises a third push rod (43) and a third push plate (44); the curling power member (41) is mounted on the second slide (36); one end of the third push rod (43) is transmission-connected to the curling power member (41); the other end of the third push rod (43) is passed through the second push plate (34) and is connected to the third push plate (44); the curling pressure ring (42) is connected to the third push plate (44) via a shaft cylinder (45).
8. The forming punch (100) for a paper cup according to claim 7, characterized in that: The shaft cylinder (45) is penetrated by a pre-pressing ring (22), and the end of the core shaft (35) away from the second push plate (34) is penetrated by a third push plate (44) and the shaft cylinder (45) in sequence to be connected to the forming pressure head (32).
9. The forming punch (100) for a paper cup according to claim 7, characterized in that: There are two third push rods (43), which are spaced apart from each other. One end of the two third push rods (43) away from the third push plate (44) is connected via a connecting plate (46), a third nut is mounted on the connecting plate (46), and the output shaft of the curling power member (41) is connected to a third lead screw that cooperates with the third nut.
10. The forming punch (100) for a paper cup according to claim 6, characterized in that: The machine base (10) is provided with a slide rail (11) which is slidably matched with a first slide table (25) and a second slide table (36); the first slide table (25) is provided with a first slider which is slidably connected with the slide rail (11); the second slide table (36) is provided with a second slider which is slidably connected with the slide rail (11).