Shaftless top structure

Abstract

The utility model discloses a kind of shaftless ejection head structures, belong to packaging composite machine equipment technical field, it includes ejection part and the installation part connected to the axial one end of ejection part, the outer surface of ejection part is equipped with several grooves and at least one key block, groove is distributed on the outer surface of ejection part along circumference, ejection part and installation part are equipped with the installation hole of through along axial direction, the one end of ejection part away from installation part is equipped with first key groove and second key groove, first key groove and second key groove are located installation hole edge and with installation hole communication;The utility model can be matched with the sleeve roller of different radius without key type through the outer surface of conical cylindrical ejection part, through groove and key block can be fixedly connected with sleeve roller clamping position being equipped with corresponding key block or corresponding key groove, through first key groove and second key groove can be fixedly connected with corresponding roll clamping position, the effect of the role effect of the ejection head without needing to be replaced when replacing different types of material receiving and releasing roller is realized, it is favorable to save installation time, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of packaging laminating machine equipment, and in particular to a shaftless top feed head structure. Background Technology

[0002] When packaging laminating machines produce packaging materials, a shaftless material handling method is generally used for easy roll replacement and cost savings, with sleeve rollers used for both take-up and unwinding. During operation, both the take-up and unwinding devices require two shaftless top heads that mate with both ends of the sleeve roller. A motor drives one of these top heads to rotate, which in turn rotates the sleeve roller to take up or unwind the material. To prevent relative slippage between the shaftless top head and the sleeve roller during rotation, the distance between the two top heads is adjusted during sleeve roller installation to ensure a tight fit between the inner wall of the sleeve roller and the shaftless top head, increasing the friction between them.

[0003] In the prior art, such as the anti-slip cone top for take-up and unwinding rolls disclosed in Chinese Patent Publication No. CN216836299 U, this device is suitable for keyless sleeve rolls, such as corrugated paper sleeve rolls. However, the prior art presents the following problems in actual production: besides keyless sleeve rolls, depending on different production needs, take-up and unwinding rolls also include sleeve rolls and winding rolls with keyways or key blocks. A top head that only fits keyless sleeve rolls cannot be used with other types of take-up and unwinding rolls, requiring the corresponding top head to be replaced when changing to different types of take-up and unwinding rolls, increasing installation time and hindering production efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a shaftless top material head structure, which can achieve the effect of not having to replace the top material head when changing different types of take-up and unload rollers, thus saving installation time and improving production efficiency.

[0005] A shaftless ejector head structure includes an ejector section and a mounting section connected to one axial end of the ejector section; the outer surface of the ejector section is provided with a plurality of grooves and at least one key block; the grooves are distributed circumferentially on the outer surface of the ejector section; the ejector section and the mounting section are provided with a mounting hole that penetrates axially; the end of the ejector section away from the mounting section is provided with a first keyway and a second keyway, the first keyway and the second keyway being located at the edge of the mounting hole and communicating with the mounting hole.

[0006] Specifically, the external shape of the top material section is a conical cylinder.

[0007] Specifically, multiple grooves are arranged in pairs to form groove pairs, and multiple sets of groove pairs are distributed at equal intervals along the circumferential direction on the outer surface of the top material.

[0008] Specifically, there are two of each of the first keyway and the second keyway. The two first keyways and the two second keyways are arranged in a cross structure. The two first keyways are symmetrically arranged with respect to the axis of the top material part, and the two second keyways are symmetrically arranged with respect to the axis of the top material part.

[0009] Specifically, the first keyway is a through groove that extends bidirectionally along the axial direction, while the second keyway extends unidirectionally along the axial direction away from the mounting portion.

[0010] Specifically, the key block is an elliptical or square piece, and the key block is located at the end of the top material portion away from the mounting portion.

[0011] Specifically, the groove has an elliptical structure.

[0012] Specifically, the bottom of the groove is provided with an inner recess.

[0013] Specifically, the mounting part is integrally connected to the top material part.

[0014] The beneficial effects of this utility model are: This application can be fitted with keyless sleeve rollers of different radii; for rolls and sleeve rollers with key blocks or keyways, this application provides corresponding keyways, grooves and key blocks for locking and fixing with rolls and sleeve rollers, achieving the effect of not needing to replace the top material head when fitting different types of sleeve rollers and rolls, which helps to save installation time and improve production efficiency. Attached Figure Description The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front view of the shaftless top feed head structure of this utility model; Figure 2 This is a top view of the shaftless top feed head structure of this utility model; Figure 3 This is a schematic diagram showing the mating and connection of the shaftless top feed head structure of this utility model with one end of the keyless sleeve roller; Figure 4 for Figure 3 A schematic diagram showing the shaftless top feed head structure and the keyless sleeve roller being fixed at one end; Figure 5 This is a schematic diagram showing the shaftless top feed head structure of this utility model and its mating with one end of a single-groove sleeve roller; Figure 6 This is a schematic diagram showing the mating and connection between the shaftless top feed head structure of this utility model and one end of the internally protruding spline-shaped sleeve roller; Figure 7This is a schematic diagram showing the shaftless top feed head structure of this utility model and its mating with one end of the cross-spline type roller; Figure 8 This is a schematic diagram showing the mating and connection of the shaftless top feed head structure of this utility model with one end of the flat key connection type roller.

[0015] The attached figures are labeled as follows: top part 10, mounting part 20, groove 11, recessed groove 111, key block 12, mounting hole 30, first keyway 13, second keyway 14, groove rib 15, keyless sleeve roller 41, single groove sleeve roller 42, snap-fit ​​groove 421, inner protruding spline sleeve roller 43, snap-fit ​​key 431, cross spline type roller 44, cross spline 441, flat key connection type roller 45, flat key 451, flat key groove 452. Detailed Implementation

[0016] This utility model provides a shaftless top feed head structure. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Please see Figures 1 to 2 : This embodiment discloses a shaftless ejector head structure, including an ejector part 10 and a mounting part 20 connected to one axial end of the ejector part 10. The ejector part 10 and the mounting part 20 are integrally connected. The outer surface of the ejector part 10 is provided with eight grooves 11 and a key block 12. The ejector part 10 and the mounting part 20 are provided with a mounting hole 30 that passes through along the axial direction. The end of the ejector part 10 away from the mounting part 20 is provided with a first keyway 13 and a second keyway 14. The first keyway 13 and the second keyway 14 are located at the edge of the mounting hole 30 and communicate with the mounting hole 30.

[0019] In this embodiment, the external shape of the top part 10 is a conical cylinder. The bottom surface of the top part 10 is fixedly connected to the mounting part 20. The key block 12 is an elliptical piece. The key block 12 is located at one end close to the bottom surface of the top part 10. The bottom of the groove 11 is also provided with an inner groove 111. The eight grooves 11 form two groove pairs. The four groove pairs are distributed at equal intervals along the circumference at one end away from the bottom surface of the top part 10. There are two first keyways 13 and two second keyways 14. The two first keyways 13 and the two second keyways 14 are distributed in a cross structure. The two first keyways 13 are symmetrically arranged with respect to the axis of the top part 10. The two second keyways 14 are symmetrically arranged with respect to the axis of the top part 10. The first keyway 13 is a through groove and is bidirectionally connected along the axial direction. The second keyway 14 is unidirectionally connected along the axial direction away from the mounting part 20.

[0020] In actual production, the mounting part 20 can be rotatably connected to the winding and unwinding devices of the packaging laminating machine through the mounting hole 30. The two ends of different types of winding and unwinding rollers are respectively connected to the top part 10 of two shaftless top material head structures. By adjusting the distance between the two shaftless top material head structures, the winding and unwinding rollers are made to fit tightly with the top part 10 and the interaction force between the winding and unwinding rollers and the top part 10 is increased.

[0021] Please see Figure 3 and Figure 4 : This embodiment can be connected with a keyless sleeve roller 41. The keyless sleeve roller 41 is sleeved on the top material part 10. The conical shape of the outside of the top material part 10 is conducive to matching keyless sleeve rollers 41 of different diameters.

[0022] In a preferred embodiment, the keyless sleeve roller 41 is a corrugated paper roller 41, with groove ribs 15 formed between adjacent grooves 11. The inner wall of the corrugated paper roller 41 is in close contact with the groove ribs 15. Since the roller body of the corrugated paper roller 41 is made of corrugated paper material, it has deformable characteristics. The inner wall of the corrugated paper roller 41 will undergo slight deformation under pressure, which is beneficial to increase the friction force between the top material part 10 and the corrugated paper roller 41 and prevent the corrugated paper roller 41 from slipping during the feeding and receiving process.

[0023] Please see Figure 5 : In this embodiment, it can be connected with a single-groove sleeve roller 42. The outer surface of the top material part 10 is pressed and adhered to the inner wall of the single-groove sleeve roller 42. The key block 12 is engaged with the snap-fit ​​groove 421 of the single-groove sleeve roller 42. Due to the conical shape of the top material part 10, this embodiment can be engaged with single-groove sleeve rollers 42 of different radii.

[0024] Please see Figure 6 : This embodiment can be connected with the inner protruding spline type sleeve roller 43. The inner wall of the inner protruding spline type sleeve roller 43 is provided with four locking keys 431. The inner wall of the inner protruding spline type sleeve roller 43 is pressed and fitted against the outer surface of the top material part 10. The locking keys 431 are matched with the inner groove 111 for limiting, which helps to strengthen the fixed connection between the inner protruding spline type sleeve roller 43 and the top material part 10 and prevent slippage.

[0025] Please see Figure 7 : This embodiment can be connected with a cross-spline type roller 44. The shaft end of the cross-spline type roller 44 is provided with a cross spline 441. The cross spline 441 is engaged with the first keyway 13 and the second keyway 14 to achieve the mating effect.

[0026] Please see Figure 8 : In this embodiment, it can be connected to the key-connected roller 45 via a key 451 and a keyway 452. The shaft head of the key-connected roller 45 is provided with two keyways 452. By aligning and inserting the key 451 into the keyway 452, the key-connected roller 45 engages with the first keyway to achieve the mating effect.

[0027] In summary, this embodiment can not only be connected with keyless sleeve rollers 41 of different radii, but also be connected with sleeve rollers and winding rollers with corresponding keyways or key blocks according to different needs. This achieves the effect of not needing to change the top material head when changing different types of take-up and unload, which helps to save installation time and improve production efficiency.

[0028] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present invention.

Claims

1. A shaftless ejector head structure, comprising an ejector part (10) and a mounting part (20) connected to one axial end of the ejector part (10), characterized in that: The outer surface of the top material part (10) is provided with several grooves (11) and at least one key block (12). The grooves (11) are distributed circumferentially on the outer surface of the top material part (10); The top part (10) and the mounting part (20) are provided with mounting holes (30) that pass through along the axial direction. The top part (10) away from the mounting part (20) is provided with a first keyway (13) and a second keyway (14). The first keyway (13) and the second keyway (14) are located at the edge of the mounting hole (30) and communicate with the mounting hole (30).

2. The shaftless top feed head structure according to claim 1, characterized in that: The external shape of the top part (10) is a conical cylinder.

3. The shaftless tip structure of claim 2, wherein: Multiple grooves (11) are paired to form groove pairs, and multiple sets of groove pairs are distributed at equal intervals along the circumferential direction on the outer surface of the top material part (10).

4. The shaftless top feed head structure according to claim 2, characterized in that: Two of each of the first keyway (13) and the second keyway (14) are provided. The two first keyways (13) and the two second keyways (14) are distributed in a cross structure. The two first keyways (13) are arranged symmetrically with respect to the axis of the top part (10), and the two second keyways (14) are arranged symmetrically with respect to the axis of the top part (10).

5. The shaftless tip structure of claim 4, wherein: The first keyway (13) is a through groove and extends bidirectionally along the axial direction, while the second keyway (14) extends unidirectionally along the axial direction away from the mounting part (20).

6. The shaftless top feeder structure according to claim 1, characterized in that: The key block (12) is an elliptical or square piece, and the key block (12) is located at the end of the top material part (10) away from the mounting part (20).

7. The shaftless tip structure of claim 1, wherein: The groove (11) has an elliptical structure.

8. The shaftless tip structure of claim 7, wherein: The bottom of the groove (11) is provided with an inner groove (111).

9. The shaftless tip structure of claim 1, wherein: The mounting part (20) is integrally connected to the top material part (10).

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