Roll feeding device for tape roll core

Abstract

The utility model discloses a roll-up device for a strip roll core, which relates to the technical field of strip steel production equipment, and comprises a winding drum and a rubber sleeve connected outside the winding drum in a sleeving manner, and at least one end of the winding drum exceeds the end part of the rubber sleeve; the rubber sleeve further comprises an auxiliary protection cylinder connected to the exceeding end of the winding drum, the inner end face of the auxiliary protection cylinder is close to the end face of the rubber sleeve, the interval between the inner end face of the auxiliary protection cylinder and the end face of the rubber sleeve is smaller than a set value, and the auxiliary protection cylinder comprises a conical cylinder with the outer diameter of the outer end smaller than the outer diameter of the inner end. The outer diameter of the inner end of the conical cylinder is equal to the outer diameter of the rubber sleeve, and the hardness of the auxiliary protection cylinder is between the hardness of the rubber sleeve and the hardness of the winding drum. The roll-up device for the belt roll core can quickly finish roll-up of the incoming roll core and is high in completion rate, and the rubber sleeve is not prone to being cut and damaged by a thin belt.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel production equipment, in particular to a coil loading device for a coil core. Background Art

[0002] When producing thin-gauge strip steel, the steel coil needs to be sleeved on the reel. The conventional reel is composed of four metal sector plates. However, for thin strip products with high surface quality requirements, a retractable rubber sleeve needs to be used on the unreeling machine reel to avoid inner ring marks generated during production. However, due to comprehensive working conditions such as the lack of hardness support force at the head of the coil core, the inability to form a perfect circle of the core, the poor tight fit between the elastic deformation of the rubber sleeve and the reel, and the small distance between the rubber sleeve and the inner core of the coil core, it is very easy for the coil core to be deformed and the trolley to be blocked during the coil loading process, and the rubber sleeve is damaged by thin strip cutting. Especially for silicon steel products that are all delivered as thin strips due to market demand and process conditions, there are many unpredictable factors for the high surface quality requirements of thin strips and irregular inner diameters of the coil cores during the feeding process.

[0003] In the prior art, in order to ensure effective coil loading, the non-round head of the coil core is pasted and confirmed with adhesive tape, and manual assistance is required throughout the process until the coil loading is completed. However, this process is cumbersome, inefficient, consumes a large amount of manpower and time; the diameter of the reel is reduced to reserve enough space to ensure that the irregular coil core can be loaded. However, this method reduces the size of the reel, reduces the equipment strength, and has a high probability of equipment failure and inner core rubbing.

[0004] In summary, how to provide a coil loading device with a protection device to complete stable coil loading without damaging the equipment and strip steel is an urgent problem for those skilled in the art at present. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a coil loading device for a coil core, which can quickly complete the coil loading of the incoming coil core with a high completion rate, and the rubber sleeve is not easily damaged by thin strip cutting.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A coil loading device for a coil core includes a reel and a rubber sleeve sleeved and connected outside the reel, and at least one end of the reel extends beyond the end of the rubber sleeve; it also includes an auxiliary protection cylinder connected to the extended end of the reel, the inner end face of the auxiliary protection cylinder is close to the end face of the rubber sleeve, the distance between the inner end face of the auxiliary protection cylinder and the end face of the rubber sleeve is less than a set value, the auxiliary protection cylinder includes a conical cylinder with an outer diameter smaller at the outer end than at the inner end, the inner diameter of the inner end of the conical cylinder is equal to the outer diameter of the rubber sleeve, and the hardness of the auxiliary protection cylinder is between the hardness of the rubber sleeve and the reel.

[0008] Optionally, the auxiliary protective cylinder further includes a cylindrical cylinder connected to the inner end of the conical cylinder, and the outer diameter of the cylindrical cylinder is equal to the outer diameter of the rubber sleeve.

[0009] Optionally, the inner end face of the auxiliary protective cylinder contacts the end face of the rubber sleeve.

[0010] Optionally, the auxiliary protective cylinder includes at least two arc sub-cylinders in the circumferential direction, and there is a gap between adjacent arc sub-cylinders.

[0011] Optionally, the conical cylinder includes an outer conical guiding surface, an inner cylindrical blocking surface, an arc surface connecting the outer end of the outer conical guiding surface and the inner cylindrical blocking surface, and a bottom surface connecting the inner end of the outer conical guiding surface and the inner cylindrical blocking surface. The inner end face of the conical cylinder is the bottom surface;

[0012] The angle between the outer conical guiding surface and the axis is 7°-10°.

[0013] Optionally, the arc sub-cylinder includes an outer conical guiding plate, an inner cylindrical blocking plate, an arc plate, a bottom plate, and an end plate connected to the ends of the outer conical guiding plate, inner cylindrical blocking plate, arc plate, and bottom plate. A cavity is formed by the outer conical guiding plate, inner cylindrical blocking plate, arc plate, bottom plate, and end plate.

[0014] Optionally, the bottom plate is a special-shaped plate with a groove, and the outer edge of the reel is clamped into the groove.

[0015] Optionally, the bottom surface of the groove opening and the end face of the outer edge of the reel are provided with matching saw teeth.

[0016] Optionally, the groove is in clearance fit with the outer edge of the reel. Protrusions are provided on the inner surface and the inner surface of the reel at the outer edge, and pits are provided on the side wall of the groove opening to match the protrusions. The protrusions are clamped into the pits.

[0017] Optionally, there is a connection hole on the side wall of the groove close to the inner cylindrical blocking plate, and the reel and the auxiliary protective cylinder are connected by bolts at the connection hole.

[0018] For the coil loading device for the coil core provided by the present utility model, the length of the rubber sleeve is shorter than that of the rubber sleeve. The end of the reel is not wrapped with the rubber sleeve, and the metal material at the end of the reel is exposed. The auxiliary protective cylinder is connected to the extended end of the reel. The inner end face of the auxiliary protective cylinder is close to the end face of the rubber sleeve, and the outer end is far from the rubber sleeve. The auxiliary protective cylinder is sleeved to the center hole of the coil core prior to the rubber sleeve.

[0019] The auxiliary protective cylinder includes a conical cylinder, which is generally frustum-shaped or conical. The outer diameter of the outer end of the conical cylinder is smaller than that of the inner end, that is, the outer end with a smaller outer diameter is sleeved onto the core of the strip coil before the inner end. After the outer end is sleeved onto the core of the strip coil, the inner end follows the outer end and is sleeved onto the core of the strip coil, and the rubber sleeve follows the auxiliary protective cylinder and is sleeved onto the core of the strip coil accordingly. Since the outer diameter of the inner end of the conical cylinder is equal to the outer diameter of the rubber sleeve, and the outer diameter of the outer end of the conical cylinder is smaller than the outer diameter of the rubber sleeve, the conical cylinder guides the core of the strip coil to climb up for feeding, so that the irregular core of the strip coil can complete the winding of the strip coil through the auxiliary protective cylinder. The smaller the distance between the inner end face of the auxiliary protective cylinder and the end face of the rubber sleeve, the better, to prevent the thin strip from being stuck in the gap between the inner end face of the auxiliary protective cylinder and the end face of the rubber sleeve, and to facilitate the smooth sleeving of the core of the strip coil onto the rubber sleeve.

[0020] In the upcoiling device for the core of the strip coil provided by the present utility model, the conical auxiliary protective cylinder is arranged at the front end of the rubber sleeve and has a guiding function. Moreover, the auxiliary protective cylinder is equivalent to a safety helmet. The material of the auxiliary protective cylinder needs to have good wear resistance, appropriate elasticity and sufficient strength. The hardness of the auxiliary protective cylinder is greater than that of the rubber sleeve to adapt to various loads during the sleeving process. The front end of the rubber sleeve is provided with an auxiliary protective cylinder for guiding, so that the irregular core can quickly complete the upcoiling, which can effectively improve the success rate and stability of the upcoiling; the front end face of the rubber sleeve will not touch the core of the strip coil, protecting the easily elastically deformed rubber sleeve. The rubber sleeve is not easily damaged by cutting with the thin strip and does not have inner core rubbing; there is no need for offline reprocessing by personnel, which is safe and reliable and saves labor; it does not affect the overall strength of the equipment and the quality of the strip coil, and ensures the stable operation of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the upcoiling device for the core of the strip coil provided by a specific embodiment of the present utility model.

[0023] REFERENCE MARKS:

[0024] Inner cylindrical baffle 1, outer conical guide plate 2, groove 3, bottom plate 4, arc plate 5. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The core of the present utility model is to provide an upcoiling device for the core of the strip coil, which can quickly complete the upcoiling of the incoming core of the strip coil with a high completion rate, and the rubber sleeve is not easily damaged by cutting with the thin strip.

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an upper coiling device for a tape core provided by a specific embodiment of the present utility model.

[0028] In a specific embodiment, the upper coiling device for a tape core provided by the present utility model includes a drum, a rubber sleeve sleeved and connected outside the drum, and at least one end of the drum extending beyond the end of the rubber sleeve; it further includes an auxiliary protection cylinder connected to the extending end of the drum, the inner end face of the auxiliary protection cylinder being close to the end face of the rubber sleeve, the distance between the inner end face of the auxiliary protection cylinder and the end face of the rubber sleeve being less than a set value, the auxiliary protection cylinder including a conical cylinder with an outer diameter of the outer end smaller than that of the inner end, the outer diameter of the inner end of the conical cylinder being equal to the outer diameter of the rubber sleeve, and the hardness of the auxiliary protection cylinder being between the hardness of the rubber sleeve and the drum.

[0029] In the above structure, the upper coiling device for a tape core includes a drum, a rubber sleeve and an auxiliary protection cylinder. The drum is usually made of a metal material such as strong steel to withstand the tension during the winding process. The rubber sleeve is sleeved and connected to the drum, that is, the rubber sleeve wraps around the outer circumference of the drum. The rubber sleeve is made of an elastic soft material such as rubber, rock wool, glass fiber, polyurethane foam, etc., which has good sound absorption and shock absorption effects, increases the wrapping property and friction between the rubber sleeve and the tape core, and prevents direct contact, collision and slipping between the drum and the tape core.

[0030] At least one end of the above-mentioned drum extends beyond the end of the rubber sleeve. In other words, the length of the rubber sleeve is shorter than that of the drum, the end of the drum is not wrapped by the rubber sleeve, and the metal material at the end of the drum is exposed.

[0031] The auxiliary protection cylinder is connected to the extending end of the drum. The inner end face of the auxiliary protection cylinder is close to the end face of the rubber sleeve, and the outer end is far from the rubber sleeve. The auxiliary protection cylinder is sent to the center hole of the tape core before the rubber sleeve.

[0032] The auxiliary protective cylinder includes a conical cylinder, which is generally frustum-shaped or conical. The outer diameter of the outer end of the conical cylinder is smaller than the outer diameter of the inner end, that is, the outer end with a smaller outer diameter is sleeved onto the tape core first before the inner end. After the outer end is sleeved onto the tape core, the inner end follows the outer end to be sleeved onto the tape core, and the rubber sleeve follows the auxiliary protective cylinder to be sleeved onto the tape core. Since the outer diameter of the inner end of the conical cylinder is equal to the outer diameter of the rubber sleeve, and the outer diameter of the outer end of the conical cylinder is smaller than the outer diameter of the rubber sleeve, the conical cylinder guides the tape core to climb the slope for feeding, so that the irregular tape core can complete the tape winding through the auxiliary protective cylinder. The smaller the distance between the inner end face of the auxiliary protective cylinder and the end face of the rubber sleeve, the better, to prevent the thin tape from being stuck in the gap between the inner end face of the auxiliary protective cylinder and the end face of the rubber sleeve, and to facilitate the smooth sleeving of the tape core onto the rubber sleeve.

[0033] The conical auxiliary protective cylinder is arranged at the front end of the rubber sleeve and has a guiding function. And the auxiliary protective cylinder is equivalent to a safety helmet. The material of the auxiliary protective cylinder needs to have good wear resistance, appropriate elasticity and sufficient strength. The hardness of the auxiliary protective cylinder is greater than that of the rubber sleeve to adapt to various loads during the sleeving process. Commonly used materials may include but are not limited to specific plastic composites, rubber composites or other engineering plastics, and these materials can be modified to improve their performance to meet the requirements of specific applications.

[0034] For the tape core winding-up device provided by the present utility model, an auxiliary protective cylinder is arranged at the front end of the rubber sleeve for guiding, so that the irregular core can be quickly wound up, which can effectively improve the success rate and stability of winding up; the front end face of the rubber sleeve will not touch the tape core, protecting the easily elastically deformed rubber sleeve, and the rubber sleeve is not easily damaged by cutting with the thin tape and does not have inner core rubbing; there is no need for offline reprocessing operation by personnel, which is safe and reliable and saves labor; it does not affect the overall strength of the equipment and the quality of the tape roll, ensuring the stable operation of the unit.

[0035] On the basis of the above various specific embodiments, the auxiliary protective cylinder further includes a cylindrical cylinder connected to the inner end of the conical cylinder, and the outer diameter of the cylindrical cylinder is equal to the outer diameter of the rubber sleeve.

[0036] In a specific embodiment, the auxiliary protective cylinder further includes a cylindrical cylinder, which is connected to the inner end of the conical cylinder. The cylindrical cylinder and the conical cylinder are integrated, and can be connected by welding or injection molding. The outer diameter of the cylindrical cylinder is equal to the outer diameter of the inner end of the conical cylinder, and the connection between the cylindrical cylinder and the conical cylinder is flat without a step. The outer diameter of the cylindrical cylinder is equal to the outer diameter of the rubber sleeve. During the process of the tape core from the conical cylinder to the rubber sleeve, it passes through a cylindrical cylinder with an outer diameter equal to that of the rubber sleeve for transition. Before the tape core enters the rubber sleeve, the leading end of the tape core is supported by the cylindrical cylinder in terms of hardness, so that the leading end of the tape core forms a round core, thus facilitating the quick winding of the round core onto the rubber sleeve and avoiding damage to the rubber sleeve by cutting with the thin tape.

[0037] On the basis of the above respective specific embodiments, the inner end face of the auxiliary protection cylinder contacts the end face of the rubber sleeve.

[0038] In one embodiment, when the auxiliary protection cylinder includes a cylindrical cylinder, the inner end face of the cylindrical cylinder contacts the end face of the rubber sleeve. When the auxiliary protection cylinder does not include a cylindrical cylinder, the inner end face of the conical cylinder contacts the end face of the rubber sleeve. The auxiliary protection cylinder and the rubber sleeve are seamlessly connected to prevent the thin belt from being stuck between the inner end face of the auxiliary protection cylinder and the end face of the rubber sleeve and cutting and damaging the rubber sleeve.

[0039] On the basis of the above respective specific embodiments, the auxiliary protection cylinder includes at least two arc sub-cylinders in the circumferential direction, and there is a gap between adjacent arc sub-cylinders.

[0040] In one specific embodiment, according to the shrinkage change values of the incoming material core, the reel and the rubber sleeve, four arc sub-cylinders are made. The arc sub-cylinders can be evenly divided, and the length of each arc sub-cylinder can be set based on the different force conditions on the upper and lower parts of the tape core. The multi-segment arc sub-cylinders are processed separately, and the processing and forming are simpler; for the processing of small parts, the processing accuracy is easier to control; the specifications and costs of the processing materials are reduced.

[0041] There is a gap between adjacent arc sub-cylinders, reserving space for processing errors, installation errors, and sleeve feeding extrusion deformation. The width of the gap should be appropriate, such as about 10 mm, which can have a large enough error and deformation space and is not easy for the thin belt to get stuck in the gap.

[0042] On the basis of the above respective specific embodiments, the conical cylinder includes an outer conical lead surface, an inner cylindrical stop surface, an arc surface connecting the outer ends of the outer conical lead surface and the inner cylindrical stop surface, and a bottom surface connecting the inner ends of the outer conical lead surface and the inner cylindrical stop surface. The inner end face of the conical cylinder is the bottom surface.

[0043] In one specific embodiment, the auxiliary protection cylinder includes an outer conical lead surface, an inner cylindrical stop surface, an arc surface, and a bottom surface. The arc surface connects the outer ends of the outer conical lead surface and the inner cylindrical stop surface. The arc surface first contacts the tape core, and the arc surface contacts the tape core tangentially. The arc surface follows the tape core for sleeve feeding, with relatively small friction and smooth sleeve feeding.

[0044] The bottom surface connects the inner ends of the outer conical lead surface and the inner cylindrical stop surface. The bottom surface is parallel to the end face of the tape core. When the auxiliary protection cylinder does not include a cylindrical cylinder, it is easy for the inner end face of the conical cylinder to contact the end face of the tape core. When the auxiliary protection cylinder includes a cylindrical cylinder, it is easy for the inner end face of the conical cylinder to be connected to the cylindrical cylinder.

[0045] The outer conical guiding surface serves as an auxiliary guiding plate to guide the steel strip to climb the slope for feeding, enabling the irregular core of the steel coil to complete the coil loading through the auxiliary guiding plate. To ensure that the conical cylinder can be smoothly sleeved into the coil core, the angle between the outer conical guiding surface and the axis is 7° - 10°, that is, the climbing angle of the outer conical guiding surface is any value between 7° and 10°, including the end values. For example, it is 8°. Precise angle control of the outer conical inclined surface enables the conical cylinder to have self-positioning ability during sleeving, and at the same time, it can provide sufficient friction to keep the conical cylinder in place.

[0046] Based on the above various specific embodiments, the arc split cylinder includes an outer conical guiding plate 2, an inner cylindrical baffle 1, an arc plate 5, a bottom plate 4, and an end plate connected to the ends of the outer conical guiding plate 2, the inner cylindrical baffle 1, the arc plate 5, and the bottom plate 4. The cavity is formed by the outer conical guiding plate 2, the inner cylindrical baffle 1, the arc plate 5, the bottom plate 4, and the end plate.

[0047] In a specific embodiment, the auxiliary protective cylinder can be a solid structure with good stability; it can also be a hollow structure, which reduces the weight of the auxiliary protective cylinder on the premise of meeting the requirements of climbing guidance and protection.

[0048] When the auxiliary protective cylinder does not include a cylindrical cylinder, the arc split cylinder includes an outer conical guiding plate 2, an inner cylindrical baffle 1, an arc plate 5, a bottom plate 4, and an end plate. The end plate is connected to the ends of the outer conical guiding plate 2, the inner cylindrical baffle 1, the arc plate 5, and the bottom plate 4. The cavity is formed by the outer conical guiding plate 2, the inner cylindrical baffle 1, the arc plate 5, the bottom plate 4, and the end plate.

[0049] When the auxiliary protective cylinder includes a cylindrical cylinder, the arc split cylinder includes an outer conical guiding plate 2, an inner cylindrical baffle 1, an arc plate 5, a bottom plate 4, a vertical plate, and an end plate. The vertical plate is connected to the outer end point of the outer conical guiding plate 2, and the inner cylindrical baffle 1 extends. The vertical plate is parallel to the extended plate of the inner cylindrical baffle 1. The bottom plate 4 is perpendicular to both the vertical plate and the extended plate of the inner cylindrical baffle 1. The end plate is connected to the ends of the outer conical guiding plate 2, the inner cylindrical baffle 1, the arc plate 5, the vertical plate, and the bottom plate 4. The cavity is formed by the outer conical guiding plate 2, the inner cylindrical baffle 1, the arc plate 5, the vertical plate, the bottom plate 4, and the end plate. The end plate is provided on the end face of the arc split cylinder, which can reinforce the arc split cylinder.

[0050] Based on the above various specific embodiments, the bottom plate 4 is a special-shaped plate with a groove 3, and the outer edge of the reel is clamped into the groove 3. The bottom surface of the groove opening of the groove 3 contacts the end face of the outer edge of the reel, and both sides of the outer edge are clamped in the groove. The reel and the auxiliary protective cylinder form double limits in the axial and radial directions, making the connection and positioning more convenient and accurate, and the connection stability more reliable, reducing relative shaking.

[0051] Based on the above specific embodiments, the bottom surface of the notch of the groove 3 abuts against the end surface of the outer edge of the reel to achieve axial positioning. And serrations are provided on the bottom surface of the notch of the groove 3 and the end surface of the outer edge of the reel. In the cooperation of the concave and convex serrations, radial positioning is formed.

[0052] In the above embodiment, through the cooperation of the concave and convex serrations on the bottom surface of the notch of the groove 3 and the end surface of the outer edge of the reel, not only axial positioning is achieved, but also double radial positioning of both sides of the notch and concave and convex pressing is achieved, and the positioning is more accurate.

[0053] Based on the above specific embodiments, the groove 3 is in clearance fit with the outer edge of the reel to facilitate the smooth entry of the outer edge of the reel into the groove 3. In order to enhance the left and right limits of the groove 3 and the outer edge of the reel, protrusions are provided on the inner surface and the inner surface at the outer edge of the reel, and pits matching the protrusions are provided on the side wall of the notch of the groove 3. The protrusions are snapped into the pits, and the pits and the protrusions further perform radial limiting; moreover, the pits and the protrusions have a connecting effect on the groove 3 and the outer edge of the reel, and have a preliminary positioning effect on the connection of the subsequent auxiliary protection cylinder and the reel, improving the concentricity and accuracy of the connection between the auxiliary protection cylinder and the reel.

[0054] Based on the above specific embodiments, there are connection holes on the side wall of the groove 3 close to the inner cylindrical baffle 1. The reel and the auxiliary protection cylinder are connected by bolts at the connection holes, which is a detachable connection and is convenient for connection and disconnection.

[0055] Of course, the connection method between the auxiliary protection cylinder and the reel can also be to set an installation seat at the center position facing the inner cylindrical baffle. The connection surface of the installation seat and the reel is connected by bolts, and the installation seat has no obstruction, which is convenient for connection; it can also be to set brackets at both ends of the arc-shaped sub-cylinder. The brackets are arranged in the gap between the two arc-shaped sub-cylinders, and the connection points are located at both ends of the arc-shaped sub-cylinder, taking into account the internal and external forces of the auxiliary protection cylinder, and the stability is better.

[0056] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] The above has introduced in detail the upcoiling device for a coil core provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown in this article, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An upcoiling device for a coil core, characterized in that, It includes a drum, and a rubber sleeve sleeved and connected outside the drum, with at least one end of the drum extending beyond the end of the rubber sleeve; it also includes an auxiliary protection cylinder connected to the extended end of the drum, the inner end face of the auxiliary protection cylinder being close to the end face of the rubber sleeve, the distance between the inner end face of the auxiliary protection cylinder and the end face of the rubber sleeve being less than a set value, the auxiliary protection cylinder including a conical cylinder with an outer diameter of the outer end smaller than that of the inner end, the outer diameter of the inner end of the conical cylinder being equal to the outer diameter of the rubber sleeve, and the hardness of the auxiliary protection cylinder being between the hardness of the rubber sleeve and the drum.

2. The upcoiling device for a coil core according to claim 1, characterized in that, The auxiliary protection cylinder further includes a cylindrical cylinder connected to the inner end of the conical cylinder, the outer diameter of the cylindrical cylinder being equal to the outer diameter of the rubber sleeve.

3. The upcoiling device for a coil core according to claim 1, characterized in that, The inner end face of the auxiliary protection cylinder is in contact with the end face of the rubber sleeve.

4. The upcoiling device for a coil core according to claim 1, characterized in that, The auxiliary protection cylinder includes at least two arc-shaped sub-cylinders in the circumferential direction, and there is a gap between adjacent arc-shaped sub-cylinders.

5. The upcoiling device for a coil core according to claim 4, characterized in that, The conical cylinder includes an outer conical lead surface, an inner cylindrical stop surface, an arc surface connecting the outer end of the outer conical lead surface and the inner cylindrical stop surface, and a bottom surface connecting the inner end of the outer conical lead surface and the inner cylindrical stop surface, and the inner end face of the conical cylinder is the bottom surface; The angle between the outer conical lead surface and the axis is 7° - 10°.

6. The upcoiling device for a coil core according to claim 5, characterized in that, The arc-shaped sub-cylinder includes an outer conical lead plate (2), an inner cylindrical baffle (1), an arc plate (5), a bottom plate (4), and an end plate connected to the ends of the outer conical lead plate (2), inner cylindrical baffle (1), arc plate (5), and bottom plate (4), and a cavity is formed by the outer conical lead plate (2), inner cylindrical baffle (1), arc plate (5), bottom plate (4), and end plate.

7. The upper coil device for a coil core according to claim 6, characterized in that, The bottom plate (4) is a special-shaped plate with a groove (3), and the outer edge of the drum is clamped into the groove (3).

8. The upcoiling device for a coil core according to claim 7, characterized in that, The bottom surface of the groove opening of the groove (3) and the end face of the outer edge of the drum are provided with matching sawteeth.

9. The upcoiling device for a coil core according to claim 7, characterized in that, The groove (3) is in clearance fit with the outer edge of the drum, and the inner surface and the inner surface of the drum are provided with protrusions at the outer edge, and the side wall of the groove opening of the groove (3) is provided with pits matching the protrusions, and the protrusions are clamped into the pits.

10. The upcoiling device for a coil core according to any one of claims 7-9, characterized in that, The side wall of the groove (3) on the side close to the inner cylindrical baffle (1) has a connection hole, and the drum and the auxiliary protection cylinder are connected by bolts at the connection hole.

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