Clamping end for printing equipment
By designing a multi-stage insertion platform and a quick-release structure for the clamping end, the problem of insufficient adaptability of the clamping end in the existing technology is solved, and stable clamping of cylinders of different sizes is achieved, and the flexibility of the equipment is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUANGSHAN NOVEL
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-21
AI Technical Summary
The clamping ends of existing printing equipment can only accommodate cylinders of limited size, which means that the ends need to be changed frequently or a large number of spare parts need to be stocked when producing films of different specifications, thus reducing the equipment's flexible production capacity.
The clamping end is composed of first-order and second-order insertion platforms. The design of transitional truncated cones with different tapers expands the range of adaptability. The quick-release structure of the locking block and limiting hole enables rapid fixation, and the connection reliability is enhanced by the limiting bolt.
It expands the range of applications for the clamping end, reduces maintenance costs, improves equipment flexibility and stability, avoids stress concentration and fretting wear, and ensures stability under high-speed rotation or high torque transmission.
Smart Images
Figure CN224145587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thin film production technology, specifically to a clamping end for printing equipment. Background Technology
[0002] The feeding assembly widely used in current printing equipment relies on a clamping system consisting of two sets of coaxial telescopic rods for its core function. The telescopic rods, driven by pistons, achieve relative movement of the ends, forming an adjustable clamping area for securing the film-bearing cylinder. In traditional designs, the ends employ a rigid frustum structure, with diameters at both ends between the inner diameters of the target cylinder (such as a paper tube). Insertion into both ends of the cylinder achieves fixation. While this design ensures synchronous rotation of the cylinder and the ends for feeding, it reveals significant drawbacks in practical applications: a single-specification end can only accommodate cylinders of limited sizes, forcing companies to frequently replace ends or stockpile large quantities of spare parts when producing films of different specifications, thus reducing the equipment's flexible production capabilities.
[0003] To address this issue, we propose a clamping end for printing equipment. Utility Model Content
[0004] The purpose of this utility model is to solve the problems in the prior art by proposing a clamping end for printing equipment. The clamping end consists of a first-stage and a second-stage insertion stage with different tapers of transition cones. The two sets of transition cones are integrated together, which can install and support cylinders of different sizes, thus expanding the adaptability of the clamping end.
[0005] To solve the above problems, this utility model provides the following technical solution:
[0006] A clamping end for printing equipment, comprising:
[0007] The first cylindrical portion is used for assembly into the clamping system;
[0008] The second cylindrical portion has a smaller diameter than the first cylindrical portion and is coaxially arranged with the first cylindrical portion;
[0009] The first transition cone is coaxially disposed between the first cylindrical part and the second cylindrical part, with its large diameter end connected to the first cylindrical part and its small diameter end connected to the second cylindrical part. The first cylindrical part, the first transition cone, and the second cylindrical part together form a first-order insertion platform.
[0010] The third cylindrical part has a smaller diameter than the second cylindrical part and is coaxially arranged with the second cylindrical part;
[0011] The second transition cone has a smaller taper than the first transition cone and is coaxially located between the second and third cylindrical parts. Its large diameter end is connected to the second cylindrical part, and its small diameter end is connected to the third cylindrical part. The second transition cone and the third cylindrical part together form a second-order insertion platform.
[0012] As a further embodiment of this utility model: the large-diameter end of the first transition cone is the same as the diameter of the first cylindrical part, and the small-diameter end of the first transition cone is the same as the diameter of the second cylindrical part.
[0013] As a further embodiment of this utility model: the large diameter end of the second transition cone is smaller than the diameter of the second cylindrical part, and the small diameter end of the second transition cone is the same as the diameter of the third cylindrical part.
[0014] As a further embodiment of this utility model, the second-order plug-in is detachably connected to the first-order plug-in.
[0015] As a further embodiment of this utility model: a locking block is provided on the outer circumference of the large diameter end of the second transition cone, and a groove is opened in the second cylindrical part for the large diameter end of the second transition cone to be inserted. The side wall of the groove is recessed to form a limiting hole, and a notch is opened on the side of the limiting hole away from the first transition cone for the locking block to pass through, so that the axial limiting of the locking block can be achieved after the locking block is inserted into the limiting hole by relying on the notch and rotated at a set angle.
[0016] As a further embodiment of this utility model: a limiting bolt is provided at the end of the second cylindrical portion away from the first transition cone, and one end of the limiting bolt can penetrate into the limiting hole to achieve abutment of the block in the limiting hole.
[0017] As a further embodiment of this utility model: the locking blocks and limiting holes are both set in multiple sets with an appropriate number of sets. The multiple sets of locking blocks are arranged in a circumferential array on the outer circumference of the large diameter end of the second transition cone, and the multiple sets of limiting holes are arranged in a circumferential array on the end of the second cylindrical part.
[0018] As a further embodiment of this utility model: the outer circumference of the first transition cone is provided with multiple sets of first protruding ridges arranged in a circumferential array.
[0019] As a further embodiment of this utility model: the outer circumference of the second transition cone is provided with multiple sets of second convex ridges arranged in a circumferential array.
[0020] As a further embodiment of this utility model: an assembly hole for the bearing to pass through is provided in the middle of the first cylindrical part, and a plurality of fastening bolts are arranged in a circumferential array on the outer circumference of the first cylindrical part, one end of the fastening bolt can be inserted into the assembly hole.
[0021] Compared with the prior art, the present invention has the following beneficial effects:
[0022] 1. The clamping end adopts a stepped frustum design, forming a two-stage gradual structure by setting a first transition frustum between the first and second cylindrical sections, and a second transition frustum with a smaller taper between the second and third cylindrical sections. This design not only allows for the installation and bearing of cylinders of different sizes, expanding the adaptability of the clamping end, but also effectively disperses stress concentration during the clamping process, avoiding local fatigue fracture caused by abrupt changes in cross-section. Simultaneously, the transition shape of the frustum provides guidance during assembly, ensuring rapid and accurate alignment of the clamping components.
[0023] 2. The large-diameter end of the first transition cone has the same diameter as the first cylindrical part, and the small-diameter end has the same diameter as the second cylindrical part, achieving a seamless transition. This design eliminates the gaps caused by stepped connections, enhances structural continuity, and thus improves overall rigidity. Under dynamic loads, it reduces vibration transmission and avoids loosening of the fit due to fretting wear.
[0024] 3. The large-diameter end of the second transition cone is smaller than that of the second cylindrical part, while the small-diameter end is the same as that of the third cylindrical part, forming an asymmetrical conical transition. This design optimizes the load transfer path from the thick end to the thin end by reducing the diameter in stages, making it suitable for scenarios subjected to alternating loads and extending the fatigue life of the component.
[0025] 4. The second-stage socket and the first-stage socket are detachably connected, allowing for modular replacement or maintenance of specific components. This design significantly reduces maintenance costs and improves equipment flexibility.
[0026] 5. A quick-release structure with a locking block and a limiting hole, combined with the guiding function of the notch, enables rotational locking after insertion. This mechanical interlocking method is easy to operate; axial fixation can be completed simply by rotating to the set angle, avoiding the cumbersome operation of traditional bolt connections. It is particularly suitable for workstation environments that require frequent disassembly and assembly.
[0027] 6. The limiting bolt penetrates into the limiting hole and abuts against the locking block, forming a double safety mechanism. The mechanical limiting of the bolt prevents the locking block from dislodging from the limiting hole due to vibration or accidental impact, significantly improving the reliability of the connection.
[0028] 7. The design of multiple sets of circumferential array of clamping blocks and limiting holes achieves even load distribution. Multiple contact points share the load, avoiding single-point overload failure, while enhancing torsional resistance and ensuring the stability of the clamping end under high-speed rotation or high torque transmission.
[0029] 8. Both the first and second transition cones have circumferentially arrayed protruding ridges on their outer circumferences to increase surface roughness and improve clamping friction. At the same time, the protruding ridge structure can prevent relative sliding between the clamping end and the printing cylinder. Attached Figure Description
[0030] The present invention will be further described below with reference to the accompanying drawings.
[0031] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0032] Figure 2 This is a schematic diagram of the three-dimensional structure of the first-order insertion platform in this utility model;
[0033] Figure 3 yes Figure 2 Enlarged structural diagram at point A in the diagram;
[0034] Figure 4 This is a schematic diagram of one embodiment of the two-stage insertion platform in this utility model;
[0035] Figure 5 This is a schematic diagram of another embodiment of the two-stage insertion platform in this utility model;
[0036] Figure 6 This is a schematic diagram of the structure of this utility model with the addition of the first and second protruding ridges.
[0037] Figure 7 This is a front view schematic diagram of the first cylindrical part in this utility model.
[0038] Figure 8 This is a schematic diagram of the working structure of this utility model. Figure 1 .
[0039] Figure 9 This is a schematic diagram of the working structure of this utility model. Figure 2 .
[0040] In the diagram: 1. First cylindrical part; 2. Second cylindrical part; 3. First transition cone; 4. Third cylindrical part; 5. Second transition cone; 6. Locking block; 7. Groove; 8. Limiting hole; 9. Notch; 10. Limiting bolt; 11. First protruding ridge; 12. Second protruding ridge; 13. Assembly hole; 14. Fastening bolt; a. Cylinder body; b. Telescopic rod. Detailed Implementation
[0041] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0042] like Figures 1-9As shown, a clamping end for printing equipment includes a first cylindrical portion 1, a first transition cone 3, a second cylindrical portion 2, a second transition cone 5, and a third cylindrical portion 4. The first transition cone 3 is located between the first cylindrical portion 1 and the second cylindrical portion 2, and all three are coaxially arranged. The larger diameter end of the first transition cone 3 is connected to the first cylindrical portion 1, and the smaller diameter end is connected to the second cylindrical portion 2, so that the three together form a first-order insertion stage. The second transition cone 5 is located between the second cylindrical portion 2 and the third cylindrical portion 4, and all three are coaxially arranged. The larger diameter end of the second transition cone 5 is connected to the second cylindrical portion 2, and the smaller diameter end is connected to the third cylindrical portion 4, so that the second transition cone 5 and the third cylindrical portion 4 together form a second-order insertion stage.
[0043] The first-order and second-order insertion platforms together form the clamping end that is adapted to and connected to the telescopic rod b in the clamping system. The taper of the first transition cone 3 in the first-order insertion platform is greater than the taper of the second transition cone 5 in the second-order insertion platform, so that the first-order and second-order insertion platforms can adapt to cylinders a of different diameters, such as... Figure 8 As shown, when the diameter of cylinder a is large, the first transition cone 3 in the first-order insertion platform can be used for insertion; as Figure 9 As shown, when the diameter of cylinder a is small, the second transition cone 5 in the two-stage insertion platform can be used for insertion. This design allows for the adaptation of cylinders a with different diameters, thus having a wide range of applications.
[0044] Meanwhile, to ensure that the first-order and second-order insertion stages can be securely inserted into the inner side of a certain type of cylinder (e.g., a paper tube), multiple sets of first protruding ribs 11 can be arranged in a circumferential array on the outer circumference of the first transition cone 3, and multiple sets of second protruding ribs 12 can be arranged in a circumferential array on the outer circumference of the second transition cone 5. During subsequent insertion, the insertion stages will exert a certain amount of pressure on the inner wall of the paper tube. Due to the presence of the protruding ribs, the contact area between the insertion stages and the inner wall of the paper tube becomes smaller. Therefore, under a certain pressure, the pressure between the insertion stages and the inner wall of the paper tube will increase, resulting in a more stable connection.
[0045] Specifically, to achieve rapid assembly of the clamping end and the telescopic rod b in the clamping system, this application provides an assembly hole 13 at the middle of the first cylindrical part 1 of the first-stage insertion platform. Simultaneously, multiple fastening bolts 14 are arranged in a circumferential array on the outer circumference of the first cylindrical part 1. One end of each fastening bolt 14 can penetrate into the assembly hole 13, and the multiple fastening bolts 14 located at their ends within the assembly hole 13 form a clamping area. The specific installation operation of the clamping end and the telescopic rod b in the clamping system is as follows: a bearing is fitted onto the telescopic rod b, and the first cylindrical part 1 is fitted onto the outside of the bearing via the assembly hole 13. At this time, the bearing is located within the clamping area. Then, the multiple fastening bolts 14 are tightened until one end of the fastening bolt 14 abuts against the outer ring of the bearing. This state can be achieved by... Figure 7This means that the first cylindrical part 1 is rotated on the telescopic rod b, and after the cylinder a is clamped by the two clamping ends, the two clamping ends can rotate together with the cylinder a.
[0046] Preferably, this application designs the first-order socket and the second-order socket as follows:
[0047] 1) A first-order insertion platform, wherein the large diameter of the first transition cone 3 in the first-order insertion platform is the same as the diameter of the first cylindrical part (1), and the small diameter of the first transition cone 3 is the same as the diameter of the second cylindrical part 2. This design avoids sharp corners with abrupt diameter changes through a tapered section, significantly reduces the stress concentration factor, and thus improves the fatigue resistance and load-bearing capacity of the structure.
[0048] 2) Second-order frustum: In the second-order frustum, the major diameter of the second transition cone 5 is smaller than the diameter of the second cylindrical part 2, while the minor diameter of the second transition cone 5 is the same as the diameter of the third cylindrical part 4. The asymmetrical design of the second transition cone (the major diameter is smaller than that of the previous cylindrical part) can adjust the natural frequency of the component and avoid resonance.
[0049] To adapt the clamping end to a wider range of clamping environments, this application features a detachable connection between the first-order and second-order clamping platforms. This allows the first-order platform to be equipped with different types of second-order clamping platforms, enabling the replacement of the appropriate second-order clamping platform for different usage environments. For example... Figure 4 and Figure 5 The two types of second-order insertion platforms shown have different cone angles for the second transition cone 5, which can be used to adapt to cylinders a of corresponding diameter.
[0050] The specific detachable connection is configured as follows: a locking block 6 is provided on the outer circumference of the large diameter end of the second transition cone 5, and the second cylindrical part 2 is provided with a groove 7 for the large diameter end of the second transition cone 5 to be inserted. The side wall of the groove 7 is recessed to form a limiting hole 8, and a notch 9 for the locking block 6 to pass through is provided on the side of the limiting hole 8 away from the first transition cone 3. After the locking block 6 is inserted into the limiting hole 8 by relying on the notch 9 and rotated by a set angle (the rotation angle can be set according to the size of the limiting hole 8), the locking block 6 can be axially limited, realizing the connection between the first-stage insertion stage and the second-stage insertion stage.
[0051] like Figures 2-3 As shown, based on the above design, in order to prevent the locking block 6 from shifting, this application provides a limiting bolt 10 at the end of the second cylindrical part 2 away from the first transition cone 3, and one end of the limiting bolt 10 can penetrate into the limiting hole 8 to achieve the contact of the locking block 6 in the limiting hole 8.
[0052] To improve the connection stability between the second-order and first-order insertion platforms, the locking blocks 6 and limiting holes 8 can be configured in multiple sets, with multiple sets of locking blocks 6 arranged in a circumferential array around the outer circumference of the large-diameter end of the second transition cone 5, and multiple sets of limiting holes 8 arranged in a circumferential array around the end of the second cylindrical portion 2. After the multiple sets of limiting holes 8 and locking blocks 6 are properly fitted and installed, a uniform circumferential connection between the second-order insertion platforms can be achieved.
[0053] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A gripper head for a printing apparatus, characterized by include: The first cylindrical part (1) is used for assembly in the clamping system; The second cylindrical part (2) has a smaller diameter than the first cylindrical part (1) and is coaxially arranged with the first cylindrical part (1); The first transition cone (3) is coaxially disposed between the first cylindrical part (1) and the second cylindrical part (2), and its large diameter end is connected to the first cylindrical part (1) and its small diameter end is connected to the second cylindrical part (2). The first cylindrical part (1), the first transition cone (3) and the second cylindrical part (2) together form a first-order insertion platform. The third cylindrical part (4) has a smaller diameter than the second cylindrical part (2) and is coaxially arranged with the second cylindrical part (2); The second transition cone (5) has a smaller taper than the first transition cone (3) and is coaxially located between the second cylindrical part (2) and the third cylindrical part (4). Its large diameter end is connected to the second cylindrical part (2) and its small diameter end is connected to the third cylindrical part (4). The second transition cone (5) and the third cylindrical part (4) together form a second-order insertion platform.
2. A gripper head for a printing apparatus according to claim 1, characterised in that The large diameter of the first transition cone (3) is the same as the diameter of the first cylindrical part (1), and the small diameter of the first transition cone (3) is the same as the diameter of the second cylindrical part (2).
3. A gripper head for a printing apparatus according to claim 1, wherein The large diameter of the second transition cone (5) is smaller than the diameter of the second cylindrical part (2), and the small diameter of the second transition cone (5) is the same as the diameter of the third cylindrical part (4).
4. A gripper head for a printing apparatus according to any one of claims 1 to 3, wherein The second-order socket is detachably connected to the first-order socket.
5. A gripper head for a printing apparatus according to claim 4, wherein A locking block (6) is provided on the outer circumference of the large diameter end of the second transition cone (5). The second cylindrical part (2) is provided with a groove (7) for the large diameter end of the second transition cone (5) to be inserted. The side wall of the groove (7) is recessed to form a limiting hole (8). A notch (9) is provided on the side of the limiting hole (8) away from the first transition cone (3) for the locking block (6) to pass through. After the locking block (6) is inserted into the limiting hole (8) by relying on the notch (9) and rotated at a set angle, the axial positioning of the locking block (6) is achieved.
6. A gripper head for a printing apparatus according to claim 5, wherein The second cylindrical part (2) is provided with a limiting bolt (10) at one end away from the first transition cone (3), and one end of the limiting bolt (10) can penetrate into the limiting hole (8) to achieve the contact of the locking block (6) in the limiting hole (8).
7. A gripper head for a printing apparatus according to claim 6, wherein The locking blocks (6) and limiting holes (8) are both configured in multiple sets with appropriate quantities. Multiple sets of locking blocks (6) are arranged in a circumferential array on the outer circumference of the large diameter end of the second transition cone (5), and multiple sets of limiting holes (8) are arranged in a circumferential array on the end of the second cylindrical part (2).
8. A gripper head for a printing apparatus according to any one of claims 1 to 3, wherein The first transition cone (3) has multiple sets of first protruding ribs (11) arranged in a circumferential array on its outer circumference.
9. A gripper head for a printing apparatus according to any one of claims 1 to 3, wherein The second transition cone (5) has multiple sets of second convex ribs (12) arranged in a circumferential array on its outer circumference.
10. A gripper head for a printing apparatus according to any one of claims 1 to 3, wherein The first cylindrical part (1) has an assembly hole (13) for the bearing to pass through at the middle position, and a plurality of fastening bolts (14) are arranged in a circumferential array on the outer circumference of the first cylindrical part (1), and one end of the fastening bolt (14) can be inserted into the assembly hole (13).