A positioning fixture for die-cutting paper cups and bowls

Abstract

This utility model discloses a positioning fixture for die-cutting paper cups and bowls, including a fixed platform, an adsorption pipe, an air pump, a lifting platform, an adsorption cover, a slot, pneumatic components, a telescopic tube, and a spring. A cylinder is installed inside the fixed platform, and a lifting platform is installed on the upper surface of the cylinder. A stabilizing platform is installed inside the lifting platform, and a clamping component is installed on the upper surface of the stabilizing platform. This utility model adopts a structured design. Through an innovative design combining an infrared-sensing pneumatic adaptive horizontal leveling system, a pneumatic integrated elastic composite clamping mechanism, and negative pressure adsorption for coordinated positioning, the device achieves multi-dimensional performance improvements. Regarding positioning accuracy, the infrared-sensing-based pneumatic adaptive horizontal leveling system plays a crucial role. This system effectively eliminates die-cutting misalignment problems caused by accumulated mechanical installation errors in traditional fixtures through real-time detection and micron-level lifting compensation. Simultaneously, the pneumatic integrated elastic composite clamping mechanism and negative pressure adsorption work synergistically.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a positioning fixture for die-cutting paper cups and bowls. Background Technology

[0002] In the industrial production of paper containers such as paper cups and bowls, the die-cutting process is a key step that determines the quality of the product. Its core requirement is to accurately fix the paper blank with positioning fixtures to ensure that the die-cutting cutter can complete the cutting process according to the preset trajectory. However, existing positioning fixtures have the following technical defects in practical applications: First, the positioning accuracy is insufficient, which easily leads to die-cutting misalignment and poor fixture compatibility, resulting in low changeover efficiency. Traditional fixtures mostly adopt mechanical rigid positioning structures, and their horizontal reference relies on manual calibration and mechanical installation accuracy, making it difficult to eliminate accumulated errors. During long-term use, due to factors such as equipment vibration and component wear, the horizontal deviation between the fixture and the die-cutting device will gradually increase, causing the die-cutting position of the paper blank to shift, resulting in problems such as skewed cuts and out-of-tolerance dimensions. The misalignment phenomenon is more prominent for paper cups and bowls with varying tapers. The clamping mechanism of the fixture is mostly designed with a fixed size, and the corresponding positioning module needs to be replaced for paper cups and bowls with different diameters and tapers. The replacement process requires not only machine shutdown but also manual recalibration, which severely restricts the rapid changeover requirements of flexible production lines. Secondly, the automation level is low, relying on manual intervention and insufficient clamping stability, which can easily lead to workpiece damage. Traditional fixtures have a single clamping method, relying on rigid mechanical clamping, which can easily cause deformation of thin paper blanks due to excessive clamping force. Under the impact and vibration of high-speed die cutting, the workpiece is prone to micro-displacement. In addition, some fixtures do not have effective anti-vibration structures. Vibration caused by the impact force of the tool during processing can cause the positioning reference to drift, further exacerbating the decline in die cutting accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a positioning fixture for die-cutting paper cups and bowls to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a positioning fixture for die-cutting paper cups and bowls, including a fixed platform, a cylinder is provided inside the fixed platform, a lifting platform is provided on the upper surface of the cylinder, a stabilizing platform is provided inside the lifting platform, a clamping member is provided on the upper surface of the stabilizing platform, an air pump is provided inside the fixed platform, an adsorption pipe is provided at the output end of the air pump, and a through hole is opened on one side of the outer wall of the fixed platform, and the adsorption pipe is sleeved in the through hole.

[0005] As a further technical solution of this utility model, a first threaded hole is provided on the fixed platform, a long bolt is threadedly connected in the first threaded hole, a cavity is provided on the upper surface of the fixed platform, a second threaded hole is provided on the upper surface of the fixed platform, a cylinder is clamped in the cavity, a screw is provided on the cylinder, and the screw is threadedly connected to the second threaded hole.

[0006] As a further technical solution of this utility model, a telescopic rod is provided inside the cylinder, a third threaded hole is provided on the telescopic rod, a short bolt is threaded into the third threaded hole, a lifting platform is provided on the cylinder, a fourth threaded hole is provided on one outer wall of the lifting platform, and a short bolt is threaded into the fourth threaded hole.

[0007] As a further technical solution of this utility model, an infrared detector is provided on one side of the outer wall of the lifting platform, a connection hole and an air inlet are provided inside the lifting platform, an adsorption cover is provided on the bottom outer surface of the lifting platform, a first air suction pipe and a second air suction pipe are respectively provided on both sides of the adsorption cover, and one end of the first air suction pipe and the second air suction pipe are sleeved in the air inlet, and an adsorption hose is sleeved at the end of the second air suction pipe.

[0008] As a further technical solution of this utility model, a stabilizing platform is provided in the connecting hole, and an adsorption hole and a slot are provided on the stabilizing platform. A clamping member is provided on the upper surface of the stabilizing platform, and a guide rod is provided at the bottom of the clamping member, and the guide rod is engaged in the slot.

[0009] As a further technical solution of this utility model, one end of the guide rod is provided with a telescopic tube, the outer surface of the telescopic tube is sleeved with a spring, and one end of the telescopic tube is sleeved with a storage tube.

[0010] As a further technical solution of this utility model, a pneumatic component is provided on one outer wall of the clamping member.

[0011] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This utility model adopts a structured design. Through an innovative design combining an infrared-sensing pneumatic adaptive horizontal leveling system, a pneumatic integrated elastic composite clamping mechanism, and negative pressure adsorption for coordinated positioning, the device achieves multi-dimensional performance improvements. Regarding positioning accuracy, the infrared-sensing-based pneumatic adaptive horizontal leveling system plays a crucial role. This system effectively eliminates the die-cutting misalignment problem caused by accumulated mechanical installation errors in traditional fixtures through real-time detection and micron-level lifting compensation. Simultaneously, the synergy between the pneumatic integrated elastic composite clamping mechanism and negative pressure adsorption ensures a repeatability accuracy of ±0.05mm for the die-cutting position. The combination of these two mechanisms, along with the pneumatic locking mechanism, ensures high leveling accuracy. The automatic locking after cutting avoids positional drift caused by processing vibration, significantly improving the accuracy of die cutting. In terms of production efficiency, the fully automatic infrared sensor leveling system requires no manual intervention, reducing equipment debugging time and greatly improving the production line changeover efficiency. The pneumatic integrated elastic composite clamping mechanism can be compatible with various specifications of workpieces without changing modules, further shortening the changeover time and enabling the equipment to adapt to high-speed continuous die cutting conditions. The production cycle of a single process is effectively shortened. The fixture can also achieve zero-damage flexible positioning. The elastic constraint force and negative pressure adsorption work together to avoid deformation of thin-walled workpieces. At the same time, the adsorption force increases the fit of the bottom surface of the workpiece, effectively suppressing displacement caused by die cutting impact, greatly reducing the scrap rate and improving product quality. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a front view structural diagram of the present utility model;

[0015] Figure 3 This is a bottom view of the structure of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the fixing platform of this utility model;

[0017] Figure 5 This is a three-dimensional structural diagram of the cylinder of this utility model;

[0018] Figure 6 This is a three-dimensional structural diagram of the lifting platform of this utility model;

[0019] Figure 7 This is a three-dimensional structural diagram of the clamping structure of this utility model;

[0020] Figure 8 This is a front view schematic diagram of the clamping structure of this utility model.

[0021] In the diagram: 1. Fixed platform; 2. First threaded hole; 3. Long bolt; 4. Through hole; 5. Adsorption pipe; 6. Air pump; 7. Cavity; 8. Second threaded hole; 9. Cylinder; 10. Screw; 11. Telescopic rod; 12. Third threaded hole; 13. Short bolt; 14. Lifting platform; 15. Fourth threaded hole; 16. Infrared detector; 17. Connecting hole; 18. Air inlet; 19. Adsorption cover; 20. First suction pipe; 21. Second suction pipe; 22. Adsorption hose; 23. Stabilizing platform; 24. Adsorption hole; 25. Empty slot; 26. Clamping component; 27. Pneumatic component; 28. Guide rod; 29. ​​Telescopic pipe; 30. Empty pipe storage; 31. Spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see the appendix Figure 1 - Appendix Figure 8This utility model provides an embodiment of a positioning fixture for die-cutting paper cups and bowls, comprising a fixed platform 1, a cylinder 9 disposed within the fixed platform 1, a lifting platform 14 disposed on the upper surface of the cylinder 9, a stabilizing platform 23 disposed within the lifting platform 14, a clamping member 26 disposed on the upper surface of the stabilizing platform 23, an air pump 6 disposed within the fixed platform 1, an adsorption pipe 5 disposed at the output end of the air pump 6, a through hole 4 opened on one side of the outer wall of the fixed platform 1, the adsorption pipe 5 being sleeved within the through hole 4; a first threaded hole 2 opened on the fixed platform 1, a long bolt 3 being threadedly connected to the first threaded hole 2, and a cavity opened on the upper surface of the fixed platform 1. 7. A second threaded hole 8 is provided on the upper surface of the fixed platform 1. A cylinder 9 is fitted inside the cavity 7. A screw 10 is provided on the cylinder 9, and the screw 10 is threaded into the second threaded hole 8. The cylinder 9 can achieve micron-level lifting compensation, thereby adjusting the height of the clamping end to ensure that it is on the same reference horizontal plane as the die-cutting device. A telescopic rod 11 is provided inside the cylinder 9. A third threaded hole 12 is provided on the telescopic rod 11. A short bolt 13 is threaded into the third threaded hole 12. A lifting platform 14 is provided on the cylinder 9. A fourth threaded hole 15 is provided on one side of the outer wall of the lifting platform 14, and the fourth threaded hole 15 is threaded into the second threaded hole 8. A short bolt 13 secures the lifting platform 14 to the cylinder 9. An infrared detector 16 is installed on one outer wall of the lifting platform 14. A connection hole 17 and an air inlet 18 are provided inside the lifting platform 14. An adsorption cover 19 is provided on the bottom outer surface of the lifting platform 14. A first suction pipe 20 and a second suction pipe 21 are respectively provided on both sides of the adsorption cover 19. One end of the first suction pipe 20 and the second suction pipe 21 are sleeved in the air inlet 18, and the end of the second suction pipe 21 is sleeved with an adsorption hose 22, which constrains the workpiece axially. A stabilizing platform 23 is provided in the connection hole 17, and the stabilizing platform 23 has a... The upper surface of the stabilizing platform 23 is provided with a clamping member 26, and a guide rod 28 is provided at the bottom of the clamping member 26. The guide rod 28 is engaged in the empty slot 25 to ensure that the workpiece will not be displaced in the horizontal direction. A telescopic tube 29 is provided at one end of the guide rod 28. A spring 31 is sleeved on the outer surface of the telescopic tube 29. A hollow tube 30 is sleeved at one end of the telescopic tube 29. The spring 31 at the bottom is compressed to generate a reverse constraint force. A pneumatic member 27 is provided on one side of the outer wall of the clamping member 26. The pneumatic member 27 is activated under the command of the control system to apply a horizontal clamping force to the workpiece.

[0024] Working Principle: Using this invention, firstly, the cylinder 9 is placed inside the fixed platform 1. The lifting platform 14 is fixedly connected to the upper surface of the cylinder 9. A stabilizing platform 23 is provided inside the lifting platform 14, and a clamping element 26 is provided on the upper surface of the stabilizing platform 23. An air pump 6 is installed inside the fixed platform 1, and an adsorption pipe 5 is provided at the output end of the air pump 6. A through hole 4 is opened on one outer wall of the fixed platform 1, and the adsorption pipe 5 is sleeved within the through hole 4. A first threaded hole 2 is opened on the fixed platform 1, and a long bolt 3 is threaded into the first threaded hole 2. A cavity 7 is opened on the upper surface of the fixed platform 1, and a second threaded hole 8 is opened on the upper surface of the fixed platform 1. The cylinder 9 is clamped inside the cavity 7, and a screw 10 is provided on the cylinder 9, with the screw 10 threaded into the second threaded hole 8. A telescopic rod 11 is installed inside the cylinder 9. A third threaded hole 12 is opened on the telescopic rod 11, and a short bolt 13 is threaded into the third threaded hole 12. A lifting platform 14 is installed on the cylinder 9. A fourth threaded hole 15 is opened on one side of the outer wall of the lifting platform 14, and a short bolt 13 is threaded into the fourth threaded hole 15. An infrared detector 16 is installed on one side of the outer wall of the lifting platform 14. A connection hole 17 and an air inlet 18 are opened inside the lifting platform 14. An adsorption cover 19 is installed on the bottom outer surface of the lifting platform 14. A first suction pipe 20 and a second suction pipe 21 are respectively installed on both sides of the adsorption cover 19. One end of the first suction pipe 20 and the second suction pipe 21 are sleeved in the air inlet 18, and an adsorption hose 22 is sleeved at the end of the second suction pipe 21. A stabilizing platform 23 is provided inside the connecting hole 17. The stabilizing platform 23 has an adsorption hole 24 and a slot 25. A clamping member 26 is provided on the upper surface of the stabilizing platform 23. A guide rod 28 is provided at the bottom of the clamping member 26 and is engaged in the slot 25. A telescopic tube 29 is provided at one end of the guide rod 28. A spring 31 is sleeved on the outer surface of the telescopic tube 29. A storage tube 30 is sleeved at one end of the telescopic tube 29. A pneumatic component 27 is provided on one side of the outer wall of the clamping member 26. For horizontal leveling, when the fixture is started, the infrared detector 16 integrated at the fixture end immediately begins to work, detecting the relative position of the fixture end and the die-cutting device in real time. The infrared detector 16 transmits the detected position deviation signal to the control system. The control system adjusts the position deviation accordingly. The data-driven cylinder 9 performs lifting and lowering movements. During the workpiece positioning and clamping process, when the paper cup or bowl is placed in the positioning area of ​​the fixture end, the system responds quickly. The pneumatic component 27 at the top moves under the command of the control system, applying a horizontal clamping force to the workpiece. At the same time, the spring 31 at the bottom is compressed, generating a reverse constraint force. These two forces work together to automatically adjust the clamping force according to the diameter and taper of the workpiece, achieving radial adaptive clamping of the paper cup or bowl. Almost simultaneously with the operation of the pneumatic integrated elastic composite clamping mechanism, the negative pressure adsorption system integrated into the fixture base also starts synchronously. The multi-channel adsorption hood 19 is connected to the high-response air pump 6 through the flexible adsorption hose 22. The air pump 6 works rapidly to generate negative pressure. Under the action of negative pressure...The bottom surface of the paper cup or bowl is firmly adhered to the positioning surface at the end of the clamp. This negative pressure adhesion not only constrains the workpiece axially but also further enhances the stability of the workpiece during processing, effectively suppressing displacement that may be caused by die-cutting impact.

[0025] 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.

[0026] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning fixture for paper cup and bowl die cutting, comprising a fixed table (1), characterized in that: A cylinder (9) is provided inside the fixed platform (1). A lifting platform (14) is provided on the upper surface of the cylinder (9). A stabilizing platform (23) is provided inside the lifting platform (14). A clamping member (26) is provided on the upper surface of the stabilizing platform (23). An air pump (6) is provided inside the fixed platform (1). An adsorption pipe (5) is provided at the output end of the air pump (6). A through hole (4) is opened on one side of the outer wall of the fixed platform (1). The adsorption pipe (5) is sleeved in the through hole (4).

2. The positioning fixture for paper cup and bowl die cutting according to claim 1, characterized in that: The fixed platform (1) has a first threaded hole (2), and a long bolt (3) is threaded into the first threaded hole (2). The upper surface of the fixed platform (1) has a cavity (7), and the upper surface of the fixed platform (1) has a second threaded hole (8). A cylinder (9) is engaged in the cavity (7), and a screw (10) is provided on the cylinder (9), and the screw (10) is threaded into the second threaded hole (8).

3. The positioning fixture for paper cup and bowl die cutting according to claim 2, characterized in that: The cylinder (9) is provided with a telescopic rod (11), and a third threaded hole (12) is provided on the telescopic rod (11). A short bolt (13) is threaded into the third threaded hole (12). A lifting platform (14) is provided on the cylinder (9). A fourth threaded hole (15) is provided on one side of the outer wall of the lifting platform (14), and a short bolt (13) is threaded into the fourth threaded hole (15).

4. A positioning fixture for die-cutting paper cups and bowls according to claim 3, characterized in that: An infrared detector (16) is provided on one side of the outer wall of the lifting platform (14). A connection hole (17) and an air inlet (18) are provided inside the lifting platform (14). An adsorption cover (19) is provided on the bottom outer surface of the lifting platform (14). A first air suction pipe (20) and a second air suction pipe (21) are respectively provided on both sides of the adsorption cover (19). One end of the first air suction pipe (20) and the second air suction pipe (21) are sleeved in the air inlet (18), and an adsorption hose (22) is sleeved at the end of the second air suction pipe (21).

5. A positioning fixture for die-cutting paper cups and bowls according to claim 4, characterized in that: A stabilizing platform (23) is provided in the connecting hole (17). The stabilizing platform (23) has an adsorption hole (24) and a slot (25). A clamping member (26) is provided on the upper surface of the stabilizing platform (23). A guide rod (28) is provided at the bottom of the clamping member (26), and the guide rod (28) is engaged in the slot (25).

6. A positioning fixture for die-cutting paper cups and bowls according to claim 5, characterized in that: One end of the guide rod (28) is provided with a telescopic tube (29), the outer surface of the telescopic tube (29) is fitted with a spring (31), and one end of the telescopic tube (29) is fitted with a storage tube (30).

7. A positioning fixture for die-cutting paper cups and bowls according to claim 5, characterized in that: A pneumatic component (27) is provided on one outer wall of the clamping member (26).

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