A cup bottom die-cut forming device

Abstract

This utility model relates to the technical field of paperboard product equipment, and more particularly to a cup bottom die-cutting forming device; comprising: a mounting frame; an upper mold, the upper mold being fixedly mounted on the mounting frame; a lower die cutter, the lower die cutter being disposed below the upper mold and driven to move up and down by a lifting drive device; the cutting edge of the lower die cutter includes several linear cutting edges arranged along the feeding direction, the linear cutting edges can divide the raw material paper strip into several S-shaped paper strips; a winding device, which can wind the paper strips into paper trays respectively; this utility model can improve the utilization rate of the paper strip by arranging the cup bottom in an S-shape, and can utilize more space and reduce costs compared to a regular array.

Description

Technical Field

[0001] This utility model relates to the technical field of paperboard product equipment, and in particular to a cup bottom die-cutting forming device. Background Technology

[0002] In the production of disposable cups, die-cutting the cup bottom is a core process. Traditional cup bottom die-cutting equipment uses a mold to press and cut the raw paper strip into the shape of the cup bottom. At the same time, a shredder is used to shred the waste paper strips generated during the cutting process, thus achieving waste removal. This waste removal method has obvious drawbacks: on the one hand, the paper scraps generated during the shredding process are easy to scatter, which not only pollutes the production environment but may also enter the equipment, affecting the normal operation of mechanical transmission components and increasing the risk of equipment failure and maintenance costs; on the other hand, the shredded paper scraps are difficult to recycle, have high processing costs, and are difficult to reuse, resulting in waste of raw materials; in addition, the shredding process requires additional shredding equipment and dust removal devices, resulting in a lengthy production process, increased equipment footprint, and reduced overall production efficiency.

[0003] Meanwhile, existing cup bottom die-cutting equipment has limited functionality and generally lacks the ability to simultaneously cut the raw paper tape into strips while die-cutting the cup bottom shape, and to rewind the waste paper strips. With the deepening of environmental protection concepts and the demand for improved production efficiency, developing a device that can simultaneously complete cup bottom die-cutting and paper tape slitting, and effectively recycle waste paper strips through a winding roller, has become an urgent technical problem to be solved. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a waste collection device that improves paper utilization.

[0005] In view of this, the present invention provides a cup bottom die-cutting forming device, comprising: Mounting rack; The upper mold is fixedly installed on the mounting frame. The lower die cutter is located below the upper die and is driven to move up and down by a lifting drive device. The cutting edge of the lower die includes several linear cutting edges arranged along the feeding direction. These linear cutting edges can divide the raw paper tape into several S-shaped paper strips. The winding device can wind the paper strips into paper trays.

[0006] Furthermore, it also includes: A blade shaped like the bottom of a cup.

[0007] Furthermore, the linear blade is the blade that intersects with the blade shaped like the bottom of the cup.

[0008] Furthermore, the lifting drive device includes: Mounting base; The mounting base is rotatably connected to a rotary drive shaft, which is driven to rotate by being connected to a drive assembly, and four eccentric wheels are fixedly mounted on the rotary drive shaft. Four linkage arms, one end of each linkage arm is rotatably connected to an eccentric wheel, and they are arranged symmetrically in pairs. The first linkage rod has one end hinged to the other end of the linkage arm and the other end hinged to the mounting base. The second linkage rod has one end hinged to the other end of the linkage arm and the other end hinged to the lower end face of the lower die cutter. When the rotary drive shaft rotates, the extension and retraction directions of the two symmetrically arranged linkage arms are opposite.

[0009] Furthermore, the upper mold includes: A mold mounting base, on which four fixed cylinders are mounted in pairs symmetrically; A fixed clamp is mounted on the output shaft of a fixed cylinder and is driven to move up and down by the fixed cylinder. The template is clamped between the fixed fixture and the mold mounting base.

[0010] Furthermore, the fixing fixture includes: The clamping rod is fixed to the output end of the fixed cylinder, and multiple support plates are arranged in an array on the clamping rod; The fixed connecting rods are detachably installed on both sides of the template, and a fixed limiting groove is provided on the lower end surface of the fixed connecting rods to engage with the support plate.

[0011] Furthermore, several weight-reduction holes are provided inside the mold mounting base.

[0012] Furthermore, it also includes: The first baffle plate is fixedly installed on the periphery of the lower die cutter; The second baffle is fixedly installed on the periphery of the mounting base, and the sides of the first baffle and the second baffle slide in contact.

[0013] The beneficial effects of this utility model are: 1. This utility model can improve the utilization rate of paper tape by arranging the cup bottom in an S-shape. Compared with a regular array, it can utilize more space and reduce costs.

[0014] 2. With the cooperation of the eccentric collar and the eccentric wheel, the movement trajectory of this utility model is circular. Therefore, the up-and-down movement speed on the straight line is slow-fast-slow, which can greatly improve the quality of the finished product. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a partial perspective structural diagram of the present invention; Figure 3 This is a schematic diagram of the linear cutting edge of the lower die cutter of this utility model; Figure 4 This is a schematic diagram of the linear cutting edge and cup-shaped cutting edge of the lower die cutter of this utility model; Figure 5 for Figure 2 Schematic diagram of the structure of region A in the middle; Figure 6 This is a side view of the lifting drive device of this utility model. Figure 7 This is a top view of the lifting drive device of this utility model. Figure 8 This is a side view of the fixing clamp of this utility model. Figure 9 This is a bottom view of the structure of the fixing clamp of this utility model.

[0016] The markings in the diagram are as follows: 1. Mounting frame; 2. Upper mold; 3. Lower mold cutter; 4. Winding device; 5. Mounting base; 6. Rotary drive shaft; 7. Eccentric wheel; 8. Linkage arm; 9. First linkage rod; 10. Second linkage rod; 11. Mold mounting seat; 12. Fixing clamp; 13. Fixing cylinder; 14. Template; 15. Clamping rod; 16. Support plate; 17. Fixing connecting rod; 18. Fixing limiting groove; 19. Weight reduction hole; 20. First baffle plate; 21. Second baffle plate; 22. Turbine; 23. Worm gear; 24. Drive motor; 25. First pulley; 26. Second pulley; 27. Pneumatic component. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0018] Example 1: This embodiment provides a cup bottom die-cutting forming device, including: Mounting bracket 1; Upper mold 2 is fixedly installed on mounting bracket 1; The lower die cutter 3 is located below the upper die 2 and is driven to move up and down by a lifting drive device. The cutting edge of the lower die 3 includes several linear cutting edges arranged along the feeding direction. The linear cutting edges can divide the raw paper tape into several S-shaped paper strips. The winding device 4 can wind the paper strips into trays.

[0019] Mounting frame 1 refers to a frame used for installation. An upper mold 2 is fixedly mounted on the mounting frame 1. The upper mold 2 is preferably fixed in a detachable manner, such as by connecting it with several fasteners. A linear slot is provided on the lower end face of the upper mold 2 to engage with the lower mold blade 3. The lower mold blade 3 is located below the upper mold 2 and engages with it. The lower mold blade 3 is driven to move up and down by a lifting drive device. A blade is mounted on the upper surface of the lower mold blade 3. The blade includes several cup-bottom shaped blades and several linear blades arranged along the feeding direction. The linear blades can divide the raw material paper strip into several paper strips, thus dividing the raw material paper strip into paper strip shapes.

[0020] like Figure 3 As shown, the paper strips are divided into S-shaped paper tapes, which are then wound up by a series of slitting rollers to form a material tray. The material tray can be placed in a die-cutting device for secondary processing, making it easier to shape the bottom of the cup.

[0021] The S-shaped arrangement of the cup bottoms can improve the utilization rate of the paper tape, and compared with a regular array, it can utilize more space and reduce costs.

[0022] Also includes: A blade shaped like the bottom of a cup.

[0023] Depending on the process requirements, the blade shape will be selected to cut the pre-tear line, while the blade shape of the cup bottom can be selected to cut directly. A linear blade is the blade that intersects with the blade shaped like the bottom of a cup.

[0024] The trajectory of this blade intersects with the blade shaped like the bottom of the cup, forming a segment of the linear blade. It is important to note that a linear blade can only intersect with the same blade shaped like the bottom of the cup at two points to prevent the formation of paper strip fragments. The intersection of the linear blade with the blade shaped like the bottom of the cup ensures that the strip of raw material paper has only one break point, preventing deformation with two break points. This reduces the probability of the raw material paper breaking by reducing instantaneous tension and also facilitates easier demolding of the formed cup bottom.

[0025] Example 2: This embodiment provides a cup bottom die-cutting forming device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0026] The lifting drive device includes: Mounting base 5; The mounting base 5 is rotatably connected to a rotary drive shaft 6, which is driven to rotate by being connected to a drive assembly. Four eccentric wheels 7 are fixedly mounted on the rotary drive shaft 6. Four linkage arms 8, one end of each linkage arm 8 is rotatably connected to an eccentric wheel 7, and they are arranged symmetrically in pairs. The first linkage rod 9 has one end hinged to the other end of the linkage arm 8 and the other end hinged to the mounting base 5. The second linkage rod 10 has one end hinged to the other end of the linkage arm 8 and the other end hinged to the lower end face of the lower die cutter 3. When the rotary drive shaft 6 rotates, the extension and retraction directions of the two symmetrically arranged linkage arms 8 are opposite.

[0027] The lifting drive device includes a mounting base 5, which is located at the bottom. A rotary drive shaft 6 is rotatably connected to the mounting base 5. The rotary drive shaft 6 is driven to rotate by a drive assembly. Four eccentric wheels 7 are provided on the rotary drive shaft 6. The eccentric wheels 7 are integrally formed with the rotary drive shaft 6. A rotatable linkage arm 8 is sleeved on the outside of each eccentric wheel 7. The linkage arms 8 are arranged symmetrically in pairs. The structure for supporting the lower die cutter 3 consists of four arrayed first linkage rods 9 and second linkage rods 10. One end of the first linkage rod 9 is hinged to the mounting base 5, and the other end is hinged to one end of the second linkage rod 10. The other end of the second linkage rod 10 is hinged to the lower end face of the lower die cutter 3. The other end of the linkage arm 8 is hinged to the hinge position of the first linkage rod 9 and the second linkage rod 10. When the rotary drive shaft 6 rotates, the two symmetrically arranged linkage arms 8 extend in opposite directions.

[0028] Working principle: When stationary, under the limiting action of the linkage arm 8, the positions of the first linkage rod 9 and the second linkage rod 10 are stationary, thus achieving support for the lower die cutter 3; When rising, the linkage arm 8 extends to both sides. Under the action of the linkage arm 8, the first linkage rod 9 and the second linkage rod 10 are in a vertical state, and the lower die cutter 3 rises. During descent, the linkage arm 8 retracts towards the rotary drive shaft 6. Under the action of the linkage arm 8, the hinge position of the first linkage rod 9 and the second linkage rod 10 is bent towards the rotary drive shaft 6, and the lower die cutter 3 descends. The lower die cutter 3 rises and falls by rotating the eccentric wheel 7 to make the linkage arm 8 reciprocate. The structure is simple, not easy to damage, and has a long service life.

[0029] Example 3: This embodiment provides a cup bottom die-cutting forming device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0030] Upper mold 2 includes: The mold mounting base 11 has four fixed cylinders 13 installed in pairs symmetrically. The fixed clamp 12 is mounted on the output shaft of the fixed cylinder 13 and is driven by the fixed cylinder 13 to move up and down. Template 14 is clamped between the fixing fixture 12 and the mold mounting base 11.

[0031] The mold mounting base 11 is fixedly mounted on the mounting frame 1, and four symmetrical fixed cylinders 13 are provided on both sides of the lower end face of the mold mounting base 11. The fixed cylinders 13 are supplied with air by the same air pump to ensure that the air pump can move simultaneously. The output shaft of the fixed cylinder 13 is set downward. The fixing clamp 12 is fixedly mounted on the output shaft of the two fixed cylinders 13 on the same side. The template 14 is a plate-shaped structure with insertion holes that cooperates with the lower die cutter 3. In order to facilitate the replacement of the template 14, the fixing clamp 12 is used to clamp and fix the template 14.

[0032] The fixing fixture 12 includes: The clamping rod 15 is fixed to the output end of the fixed cylinder 13, and multiple support plates are arranged in an array on the clamping rod 15. The fixed connecting rod 16 and the support plate 17 are detachably set on both sides of the template 14, and the lower end surface of the fixed connecting rod 16 and the support plate 17 is provided with a fixed limiting groove 18 that is inserted and matched with the support plate.

[0033] The clamping rod 15 includes two rods, which are respectively contacted and set on both sides of the support plate 17 of the fixed connecting rod 16 to limit the left and right movement of the template 14. Multiple evenly distributed support plates are provided below the clamping rod 15. The lower end surface of the support plate 17 of the fixed connecting rod 16 is provided with a fixed limiting groove 18 that is inserted into the support plate, which can effectively prevent the template 14 from moving back and forth. Furthermore, the detachable connection between the support plate 17 of the fixed connecting rod 16 and the template 14 can reduce the processing cost of the template 14.

[0034] Example 4: This embodiment provides a cup bottom die-cutting forming device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0035] Several weight-reducing holes 19 are provided in the mold mounting base 11.

[0036] The weight-reducing holes 19 can effectively reduce the pressure on the mounting bracket 1, making the overall structure more stable.

[0037] Also includes: The first baffle plate 20 is fixedly installed on the periphery of the lower die cutter 3; The second shield 21 is fixedly installed on the periphery of the mounting base 5, and the sides of the first shield 20 and the second shield 21 slide in contact.

[0038] The first baffle plate 20 is fixedly installed on the lower circumference of the lower die cutter 3, and the second baffle plate 21 is fixedly connected to the circumference of the mounting base 5. The first baffle plate 20 and the second baffle plate 21 slide in contact on the side. When the lower die cutter 3 moves up and down, the first baffle plate 20 and the second baffle plate 21 can effectively prevent foreign objects from entering the structure of the lifting drive device and causing structural damage.

[0039] Example 5: This embodiment provides a cup bottom die-cutting forming device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] The driver components include: Turbine 22 is fixedly mounted on the rotary drive shaft 6; The worm gear 23 is rotatably connected to the mounting base 5 and cooperates with the turbine 22; Drive motor 24, including output end; The pulley assembly includes a first pulley 25 fixedly connected to the end of the worm 23, and a second pulley 26 provided on the output end of the drive motor 24. The first pulley 25 and the second pulley 26 are linked together by a belt.

[0041] The drive motor 24 is a servo motor. The tooth surface of the worm 23 is a continuous helical tooth. When it meshes with the worm gear 22, it gradually enters and exits the contact, resulting in less impact and vibration. The worm gear 23 transmission has the technical effect of smooth transmission. When the lead angle of the worm 23 is less than the equivalent friction angle of the meshing surface, the worm gear 23 transmission will produce a self-locking phenomenon, which can improve the stability of the lifting drive device. The low vibration can effectively improve the die-cutting accuracy.

[0042] Example 6: This embodiment provides a cup bottom die-cutting forming device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] Also includes: The pneumatic unit 27 is located on one side of the feeding direction of the lower die cutter 3. The pneumatic unit 27 is provided with several air outlets, and the air outlets are directed towards the raw material paper strip.

[0044] A pneumatic unit 27 is provided in the direction of material feeding of the lower die cutter 3. The main body of the pneumatic unit 27 is a square rod-shaped structure with an internal air channel. Several air outlets are opened on the edge of the pneumatic unit 27 near the lower die cutter 3. After die cutting, the pneumatic unit 27 is activated to make the raw material paper strip separate from the blade to prevent paper jam. After separation, the air outlet of the pneumatic unit 27 can be turned off.

[0045] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms fall within the scope of protection of this application.

Claims

1. A cup bottom die-forming apparatus characterized by comprising: include: Mounting bracket (1); Upper mold (2) is fixedly installed on mounting bracket (1); The lower die cutter (3) is located below the upper die (2) and is driven to move up and down by a lifting drive device; The blade of the lower die cutter (3) includes several linear blades arranged along the feeding direction. The linear blades can divide the raw paper strip into several S-shaped paper strips. The winding device (4) can wind the paper strips into paper trays.

2. A cup bottom die-forming apparatus according to claim 1, wherein Also includes: A blade shaped like the bottom of a cup.

3. A cup bottom die-forming apparatus as defined in claim 1 wherein, A linear blade is the blade that intersects with the blade shaped like the bottom of a cup.

4. A cup bottom die-forming apparatus as defined in claim 1 wherein, The lifting drive device includes: Mounting base (5); The mounting base (5) is rotatably connected to a rotary drive shaft (6), which is driven to rotate by being connected to a drive assembly, and four eccentric wheels (7) are fixedly provided on the rotary drive shaft (6). Four linkage arms (8), one end of each linkage arm (8) is rotatably connected to an eccentric wheel (7), and they are arranged symmetrically in pairs. The first linkage rod (9) has one end hinged to the other end of the linkage arm (8) and the other end hinged to the mounting base (5); The second linkage rod (10) has one end hinged to the other end of the linkage arm (8) and the other end hinged to the lower end face of the lower die cutter (3). When the rotary drive shaft (6) rotates, the extension and retraction directions of the two symmetrically arranged linkage arms (8) are opposite.

5. A cup bottom die-forming apparatus as defined in claim 1 wherein, The upper mold (2) includes: Mold mounting base (11), on which four fixed cylinders (13) are mounted in pairs symmetrically; The fixed clamp (12) is mounted on the output shaft of the fixed cylinder (13) and is driven to move up and down by the fixed cylinder (13); Template (14) is clamped between the fixing fixture (12) and the mold mounting base (11).

6. A cup bottom die-forming apparatus as defined in claim 5 wherein, The fixing fixture (12) includes: The clamp rod (15) is fixed on the output end of the fixed cylinder (13), and multiple support plates are arranged on the clamp rod (15). The fixed connecting rod (17) is detachably set on both sides of the template (14), and a fixed limiting groove (18) is provided on the lower end surface of the fixed connecting rod (17) to be inserted and matched with the support plate.

7. The cup bottom die-cutting forming device according to claim 5, characterized in that, Several weight-reducing holes (19) are provided in the mold mounting base (11).

8. A cup bottom die-forming apparatus as defined in claim 4 wherein, Also includes: The first baffle plate (20) is fixedly installed on the periphery of the lower die cutter (3); The second shield (21) is fixedly installed on the periphery of the mounting base (5), and the sides of the first shield (20) and the second shield (21) slide in contact.

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