Coiled material feeding and fixing device

Abstract

The utility model relates to the technical field of coiled material feeding devices, and discloses a coiled material feeding fixing device which comprises a feeding shaft, coiled materials are suitable for being installed on the feeding shaft in a sleeved mode, at least one clamping part is arranged on the peripheral wall of the feeding shaft at intervals, and a clamp body is installed on the feeding shaft in a sleeved mode in the axial direction. The buckling pieces are arranged in pairs, the buckling pieces are installed on the clamp body in a sliding mode, clamping pieces are arranged at the ends, facing the interior of the clamp body, of the buckling pieces, and the clamping pieces are suitable for being matched with the clamping parts in a clamped connection mode; and the bias pressing piece is arranged between the clamp body and the buckling piece. The unlocking force for overcoming the bias pressure applied by the bias pressure piece is applied to the paired buckling pieces at the same time, so that the clamping pieces on the pair of buckling pieces can be synchronously separated from the clamping part on the feeding shaft, limitation on axial movement between the buckling pieces and the feeding shaft is relieved, quick disassembly and assembly of reel type materials can be achieved, other tools are not needed, the disassembly steps are simplified, and the disassembly efficiency is improved. And the coiled material replacement efficiency can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of roll material feeding devices, specifically to a roll material feeding and fixing device. Background Technology

[0002] In industrial manufacturing, slender and flexible materials such as metal strips, cables, and fabrics are typically stored, transported, and fed using roll-on / roll-off methods. Roll-on / roll-off effectively utilizes space, protects the material's shape, and facilitates continuous unwinding operations on automated or semi-automated production lines.

[0003] In the photovoltaic module manufacturing process, core equipment such as stringers and stackers require a continuous supply of key conductive materials such as solder strips and busbars. To meet the material supply needs of continuous production, these solder strips and busbars are generally supplied as raw materials in roll form.

[0004] During the loading process of equipment such as string welding machines and lap welding machines, operators need to install the reel to the designated station. This usually requires the use of auxiliary clamps to securely lock the reel or material end with screws, preventing material displacement, loosening, or shifting due to tension changes or equipment vibration during subsequent unwinding. However, the manual loading and unloading of auxiliary clamp screws results in low operational efficiency, severely impacting production efficiency during the equipment loading process. Utility Model Content

[0005] In view of this, the present invention provides a coil feeding and fixing device to solve the problem of low feeding efficiency in equipment such as string welding machines and stack welding machines, which affects production efficiency.

[0006] This utility model provides a roll material feeding and fixing device, including:

[0007] A feeding shaft is provided on which the rolled material is fitted and installed. At least one engaging part is provided at intervals on the outer peripheral wall of the feeding shaft. A clamp body is fitted and installed on the feeding shaft along the axial direction.

[0008] The fasteners are arranged in pairs and are slidably mounted on the fixture body. The sliding direction of the fasteners is perpendicular to the feeding shaft. The pairs of fasteners are respectively located on opposite sides of the feeding shaft. One end of the fastener facing into the fixture body is provided with a locking member, which is adapted to engage with the locking part.

[0009] A biasing member is disposed between the clamp body and the snap-fit ​​member. The biasing member is adapted to apply a biasing force to the snap-fit ​​member to cause the pair of snap-fit ​​members to move towards each other, so that the snap-fit ​​member is normally engaged with the feeding shaft snap-fit ​​part.

[0010] When the roll material is normally fixed on the roll material feeding and fixing device, the biasing force applied by the biasing member, which is installed in conjunction with a pair of fasteners, causes the pair of fasteners to tend to move in opposite directions. This drives the engaging part on the fastener to stably engage with the engaging part on the outer peripheral wall of the feeding shaft, thereby limiting the axial movement of the clamp body relative to the feeding shaft and fixing the roll material sleeved on the feeding shaft. When it is necessary to disassemble or replace the roll material, by simultaneously applying a reverse force to the pair of fasteners to overcome the biasing force, the engaging parts on the two fasteners are driven to slide synchronously away from the feeding shaft, thereby separating the engaging parts from the engaging part on the feeding shaft. This unlocks the fasteners from the feeding shaft, allowing the clamp body to be removed from the feeding shaft. This releases the clamp body's restriction on the roll material on the feeding shaft, allowing the roll material to be moved out along the axial direction of the feeding shaft and replaced with new roll material. By sliding a pair of oppositely arranged snap-fit ​​components onto the clamp body, and simultaneously using a biasing component to press and fix the snap-fit ​​components to both sides of the feeding shaft, and by engaging the engaging ends on the snap-fit ​​components with the engaging ends on the feeding shaft to restrict axial displacement, the axial position of the clamp body is secured, thus ensuring the roll material is firmly fixed. By simultaneously applying an unlocking force to the pair of snap-fit ​​components that overcomes the biasing force applied by the biasing component, the engaging ends on the pair of snap-fit ​​components can be simultaneously disengaged from the engaging parts on the feeding shaft, releasing the restriction on axial movement between the snap-fit ​​components and the feeding shaft. This allows for rapid assembly and disassembly of roll materials without the need for other tools, simplifying the disassembly process and greatly improving the efficiency of roll material changeover.

[0011] In one optional embodiment, an elastic buffer is installed between the clamp body and the roll material. The elastic buffer, through its own elastic deformation range, can compensate for misalignment between the locking parts and locking portions caused by variations in the thickness of the roll material. When the roll material is inserted into the feeding shaft, the clamp body compresses the elastic buffer, causing it to contract and adjust the axial distance between the clamp body and the roll material. This ensures that the locking parts of the fasteners and the locking portions of the feeding shaft can be smoothly aligned and assembled, eliminating the risk of misalignment between the locking parts and locking portions due to variations in material thickness.

[0012] In an optional embodiment, a top-mounted component is further included, sleeved and mounted on the feeding shaft. The top-mounted component is adapted to be installed between the clamp body and the rolled material. A buffer cavity is provided at one end of the clamp body facing the top-mounted component. One end of the top-mounted component is slidably mounted within the buffer cavity, while the other end abuts against the rolled material. An elastic buffer is sleeved and mounted on the top-mounted component. The top-mounted component is installed between the clamp body and the rolled material, with one end sliding within the buffer cavity and the other end abutting against the rolled material. The elastic buffer is sleeved on the top-mounted component. When the rolled material is installed in place, the clamp body presses inward, allowing the top-mounted component to slide within the buffer cavity, compressing the elastic buffer accordingly. This ensures smooth alignment and assembly of the engaging parts of the fastener and the engaging portion of the feeding shaft. By using the top-mounted component to press the rolled material and guide the displacement of the elastic buffer, the stability of the rolled material installation can be improved.

[0013] In one optional embodiment, a limiting block is fixedly installed on the side of the clamp body where the buffer cavity is located. The ejector extends through the limiting block into the buffer cavity. A limiting portion is provided at one end of the ejector in the buffer cavity, and the limiting portion extends in a direction away from the axis of the ejector. The cooperation between the limiting block and the limiting portion can limit the sliding of the ejector, restrict the displacement range of the ejector in the buffer cavity, prevent the ejector from falling out of the buffer cavity during sliding, and ensure that the ejector slides stably within the buffer cavity.

[0014] In one optional embodiment, the top material member has a tapered head at one end facing the coil material, with the larger outer diameter end of the tapered head facing the clamp body. The tapered head design allows for a more even distribution of clamping force when the top material member contacts the coil material, reducing localized indentations and damage to the coil material. It also facilitates alignment and installation between the top material member and the coil material, improving the installation quality and efficiency of the coil material.

[0015] In one optional embodiment, the fixture body has a mating cavity, within which a positioning block is disposed. The positioning blocks are arranged in pairs, and the latching member has a positioning opening. The positioning opening is fitted onto one of the paired positioning blocks, and the biasing member is installed between the other of the paired positioning blocks and the latching member. By the mutual engagement of the positioning blocks within the mating cavity and the positioning openings on the latching members, and the biasing member installed between the positioning blocks and the latching member, stable sliding and accurate positioning of the latching member within the fixture body are ensured, improving the fitting accuracy between the latching member and the latching part. Simultaneously, the biasing member can continuously provide a stable biasing force, ensuring a tight fit between the latching member and the latching part, thus enhancing the stability and reliability of the device.

[0016] In one optional embodiment, the locking element is disposed on the inner wall of the positioning port, so that the feeding shaft also passes through the positioning port of the locking element. When unlocking, pressing a pair of locking elements inward at the same time can separate the locking elements on the pair of locking elements from the locking parts on the feeding shaft. This not only ensures that the clamp body can stably fix the coil material, but also simplifies the unlocking process of the coil feeding and fixing device, and improves the efficiency of disassembling and replacing the coil material.

[0017] In one alternative implementation, the biasing element is an elastic element or a push rod assembly.

[0018] In one optional embodiment, the engaging portion is a limiting groove or a limiting protrusion, and the engaging member is a limiting protrusion or a limiting groove that cooperates with the engaging portion. The cooperation of the limiting groove and the limiting protrusion can achieve a tight engagement between the engaging member and the engaging portion, which has a simple structure and low manufacturing cost.

[0019] In one optional embodiment, the width of the limiting slot is greater than the thickness of the limiting protrusion, so that the engaging component can be inserted into or disengaged from the engaging part more smoothly, reducing the difficulty of engaging and disengaging, improving the convenience and efficiency of operation, and improving the assembly accuracy and reliability of the device. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific 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 from these drawings without creative effort.

[0021] Figure 1 An exploded view of the roll material feeding and fixing device provided in an embodiment of this utility model.

[0022] Figure 2 A schematic diagram of the structure of the roll material feeding and fixing device provided in the embodiment of this utility model.

[0023] Figure 3 A cross-sectional view of the roll material feeding and fixing device provided in an embodiment of this utility model.

[0024] Figure 4 This is a schematic diagram of the mating cavity on the fixture body provided in an embodiment of the present utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the clamp body and the fastener provided in the embodiment of the present utility model.

[0026] Figure 6This is a schematic diagram showing the structure of the clamp body and the fastener when the roll material feeding and fixing device provided in this embodiment of the utility model is in the unlocked state.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Feeding shaft; 2. Roll material; 3. Top material block; 4. Elastic buffer; 5. Limiting block; 6. Fixture body; 7. Cover plate; 8. Fastener; 9. Offset component; 10. Conical head; 11. Limiting part; 12. Engaging part; 13. Engaging component; 14. Positioning block. Detailed Implementation

[0029] 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.

[0030] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, a roll material feeding and fixing device is provided, including a feeding shaft 1, a clamp body 6, a buckle 8, and an biasing member 9.

[0032] A roll of material 2 is fitted onto a feeding shaft 1. At least one engaging portion 12 is spaced apart on the outer peripheral wall of the feeding shaft 1. A clamp body 6 is fitted onto the feeding shaft 1 along its axial direction. A pair of fasteners 8 are arranged and slidably mounted on the clamp body 6. The sliding direction of the fasteners 8 is perpendicular to the axial direction of the feeding shaft 1. The pairs of fasteners 8 are arranged on opposite sides of the feeding shaft 1. A engaging member 13 is provided at the end of the fastener 8 facing inwards from the clamp body 6. The engaging member 13 engages with the engaging portion 12 on the outer peripheral wall of the feeding shaft 1. A biasing member 9 is installed between the clamp body 6 and the fasteners 8. The biasing member 9 applies a biasing force to the fasteners 8, causing the pairs of fasteners 8 to tend to move towards each other, thus ensuring that the engaging member 13 remains engaged with the engaging portion 12 on the feeding shaft 1 under normal conditions. To position the other end of the roll material 2, the feeding shaft 1 can be configured as a tapered shaft. In this embodiment, the end of the feeding shaft 1 is configured as an abutment plate for positioning the roll material 2.

[0033] When the roll material 2 is normally fixed using the roll material feeding and fixing device, the biasing member 9, which is installed in conjunction with a pair of fasteners 8, applies biasing force to the corresponding fasteners 8, causing the pair of fasteners 8 to move in opposite directions. This drives the engaging member 13 on the fasteners 8 to maintain a stable engagement with the engaging part 12 on the outer peripheral wall of the feeding shaft 1, thereby effectively limiting the axial movement of the clamp body 6 relative to the feeding shaft 1 and achieving stable fixing of the roll material 2 on the feeding shaft 1. When it is necessary to disassemble or replace the roll material, the operator can simultaneously apply a reverse force to the pair of fasteners 8 to overcome the biasing force, causing the engaging member 13 on the two fasteners 8 to slide synchronously and move away from the feeding shaft 1. This ultimately separates the engaging member 13 from the engaging part 12 on the feeding shaft 1, completing the unlocking action between the fasteners 8 and the feeding shaft 1, and allowing the clamp body 6 to be smoothly removed from the feeding shaft 1. At this time, the limiting effect of the clamp body 6 on the roll material 2 on the feeding shaft 1 is released, and the roll material 2 can be moved out and removed along the axial direction of the feeding shaft 1 so as to be replaced with a new roll material 2.

[0034] By slidingly mounting a pair of oppositely arranged snap-fit ​​pieces 8 on the clamp body 6, and pressing and fixing the snap-fit ​​pieces 8 to both sides of the feeding shaft 1 with the aid of the biasing member 9, and simultaneously engaging the engaging part 13 on the snap-fit ​​pieces 8 with the engaging part 12 on the feeding shaft 1, the axial displacement of the clamp body 6 is restricted, thus achieving effective axial positioning and securing of the clamp body 6 and ensuring that the roll material 2 can be firmly and reliably fixed. Furthermore, when disassembly is required, only an unlocking force sufficient to overcome the biasing force applied by the biasing member 9 needs to be applied simultaneously to the pair of snap-fit ​​pieces 8, allowing the engaging parts 13 on the pair of snap-fit ​​pieces 8 to simultaneously disengage from the engaging part 12 on the feeding shaft 1, releasing the restriction on axial movement between the snap-fit ​​pieces 8 and the feeding shaft 1, thereby achieving rapid assembly and disassembly of the roll material. The entire process requires no other tools, greatly simplifying the disassembly steps and significantly improving the efficiency of changing the roll material 2 in practical applications.

[0035] It should be noted that in this embodiment, the fastener 8 is provided in pairs, and the fastener 8 is a fastening plate with a positioning port, and the pair of fastening plates are arranged in parallel. In some other embodiments, in order to increase the stability of the fastening, multiple pairs of fasteners 8 can be provided, and the multiple pairs of fasteners 8 can be arranged in parallel or spaced apart in the circumferential direction.

[0036] In one embodiment, an elastic buffer 4 is installed between the clamp body 6 and the roll material 2. The elastic buffer 4 can compensate for the misalignment between the engaging part 13 and the engaging part 12 caused by the different thicknesses of the roll material 2 through its own elastic deformation range. When the roll material 2 is inserted into the feeding shaft 1, the clamp body 6 squeezes the elastic buffer 4, forcing it to contract, thereby adjusting the axial distance between it and the roll material 2, ensuring that the engaging part 13 of the buckle 8 can be precisely aligned and assembled with the engaging part 12 of the feeding shaft 1, effectively avoiding the misalignment of the engaging part 13 and the engaging part 12 caused by the different thicknesses of the roll material 2.

[0037] Furthermore, a top material is also fitted onto the feeding shaft 1, and the top material is installed between the clamp body 6 and the roll material 2. A buffer cavity is provided at one end of the clamp body 6 facing the top material. One end of the top material slides into the buffer cavity, and the other end abuts against the roll material 2. An elastic buffer 4 is fitted onto the top material. When installing the roll material 2, the roll material 2 is fitted onto the feeding shaft 1, and then the top material, elastic buffer 4, and clamp body 6 are installed. The clamp body 6 presses the top material inward, causing it to slide within the buffer cavity, while simultaneously compressing the elastic buffer 4. This allows adjustment of the relative position between the engaging part 13 and the engaging part 12, ensuring smooth alignment and assembly of the engaging part 13 of the buckle 8 with the engaging part 12 of the feeding shaft 1. Moreover, the accumulation of elastic potential energy in the elastic buffer 4 causes the top material to exert a continuous pressing force on the roll material 2, ensuring that the roll material 2 is securely installed on the feeding shaft 1.

[0038] In this embodiment, a limiting block 5 is fixedly installed on one side of the clamp body 6 where a buffer cavity is provided. The top material extends through the limiting block 5 into the buffer cavity. A limiting part 11 is provided at one end of the top material in the buffer cavity, and the limiting part 11 extends in a direction away from the axis of the top material. The cooperation between the limiting block 5 and the limiting part 11 can limit the sliding of the top material, thereby forming an axial positioning of the top material, ensuring that the top material always slides stably within the range defined by the buffer cavity, and preventing the top material from falling out of the buffer cavity. In this embodiment, the limiting part 11 is an annular step provided at the end of the top material. In some other embodiments, the limiting part 11 may also have multiple limiting protrusions circumferentially spaced at the end of the top material.

[0039] The limiting block 5 and the clamp body 6 can be welded together, suitable for metal clamp bodies 6, with high welding strength and large load-bearing capacity; or they can be bolted together, facilitating the disassembly and replacement of the limiting block 5, flexibly adapting to different sizes of top material parts or adjusting the limiting position. Regarding the shape of the limiting part 11, it can be designed as a radial flange, which is easy to manufacture and can effectively limit the displacement of the top material part; or it can be an axial baffle, which extends axially along the top material part, forming a scissor-like structure with the limiting block 5, further enhancing the limiting stability, accurately controlling the sliding range of the top material part, and ensuring the long-term stable operation of the device. In this embodiment, the limiting block 5 is composed of two semi-circular ring-shaped blocks, which are spliced ​​together to form a ring, and the limiting block 5 is fixedly installed on the clamp body 6 by bolts. Furthermore, a limiting groove is provided on the side of the limiting block 5 facing away from the clamp body 6, and the spring of the elastic buffer 4 is installed in the limiting groove.

[0040] In one embodiment, a conical head 10 is provided at the end of the top material member facing the roll material 2. The end of the conical head 10 with a larger outer diameter faces the clamp body 6, and the end with a smaller outer diameter faces the roll material 2. A conical groove is provided at the end of the roll of the roll material 2, and the conical head 10 abuts against the conical groove. When the conical head 10 contacts the roll material 2, its inclined outer surface distributes the clamping force evenly on the surface of the roll material 2, avoiding excessive local pressure that could cause indentations or damage, thus preserving the surface quality of the roll material 2. When installing the roll material 2, the inclined surface of the conical head 10 guides the top material member to slide smoothly into the predetermined position, achieving rapid centering and precise installation, thereby improving installation efficiency.

[0041] In one embodiment, the clamp body 6 has a mating cavity, and a positioning block 14 is provided in the mating cavity. The positioning blocks 14 are arranged in pairs, and the snap fastener 8 has a positioning port. The positioning port is fitted onto one of the paired positioning blocks 14, and the biasing member 9 is installed between the other of the paired positioning blocks 14 and the snap fastener 8. To facilitate the installation of the snap fastener 8 in the mating cavity, the side of the mating cavity facing away from the top coil material 2 is made open. A cover plate 7 is detachably installed at the opening of the mating cavity by bolts to close the mating cavity. By the mutual cooperation between the positioning blocks 14 and the positioning port on the snap fastener 8 in the mating cavity, and the biasing member 9 installed between the positioning blocks 14 and the snap fastener 8, the snap fastener 8 is ensured to slide stably and be accurately positioned in the clamp body 6, improving the fitting accuracy between the snap fastener 13 and the snap fastener 12. At the same time, the biasing member 9 can continuously provide a stable biasing force to ensure a tight fit between the snap fastener 13 and the snap fastener 12, enhancing the stability and reliability of the device.

[0042] In this embodiment, the locking member 13 is disposed on the inner wall of the positioning port, so that the feeding shaft 1 also passes through the positioning port of the locking member 8. When unlocking, pressing a pair of locking members 8 inward at the same time can separate the locking member 13 on the pair of locking members 8 from the locking part 12 on the feeding shaft 1. While ensuring that the clamp body 6 can stably fix the roll material 2, the unlocking process of the roll material feeding and fixing device is further simplified, and the efficiency of disassembling and replacing the roll material 2 is improved.

[0043] Furthermore, in order to ensure a tight fit between the engaging member 13 and the engaging part 12, the side of the engaging member 13 facing the engaging part 12 is set as a concave arc shape.

[0044] In one embodiment, the biasing element 9 is an elastic element such as a spring or sheet that passively applies biasing force, or it can be a push rod assembly such as a hydraulic push rod or an electric push rod that can actively apply biasing force. In this embodiment, the biasing element 9 is selected as a spring, and two springs as biasing elements 9 are installed between each buckle 8 and the clamp body 6.

[0045] In one embodiment, the engaging portion 12 is a limiting groove or a limiting protrusion, and the engaging member 13 is a limiting protrusion or a limiting groove that mates with the engaging portion 12. The engagement of the limiting groove and the limiting protrusion enables a tight engagement between the engaging member 13 and the engaging portion 12, resulting in a simple structure and low manufacturing cost. In this embodiment, the engaging portion 12 is configured as a limiting groove, and multiple limiting grooves are spaced apart in the circumferential direction of the feeding shaft 1. The engaging member 13 is configured as a limiting protrusion.

[0046] In this embodiment, the width of the limiting slot is greater than the thickness of the limiting protrusion, so that the engaging part 13 can be inserted into or disengaged from the engaging part 12 more smoothly, reducing the difficulty of engaging and disengaging, improving the convenience and efficiency of operation, and improving the assembly accuracy and reliability of the device.

[0047] In its normal state, the coil material 2 is mounted on the feeding shaft 1 and is secured by the top block 3. Springs acting as biasing components 9 press against two locking pieces 8. Both locking pieces 8 simultaneously engage with the limiting slots on the feeding shaft 1. Multiple limiting slots on the feeding shaft 1 accommodate coil materials 2 of varying thicknesses. When opening is required, applying a pushing force to the right locking piece 8 with the index finger and a pushing force to the left locking piece 8 with the thumb easily separates the locking pieces 8 from the limiting slots on the feeding shaft 1, enabling quick assembly and disassembly of the coil material 2. This method allows for easy one-handed assembly and disassembly, which is faster and more efficient than screw-locking methods, allowing for tool-free installation of the coil material 2.

[0048] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A roll material feeding and fixing device, characterized in that, include: Feeding shaft (1), roll material (2) is adapted to be sleeved and installed on the feeding shaft (1), at least one engaging part (12) is provided at intervals on the outer peripheral wall of the feeding shaft (1), and a clamp body (6) is sleeved and installed on the feeding shaft (1) along the axial direction; The fasteners (8) are arranged in pairs. The fasteners (8) are slidably installed on the clamp body (6), and the sliding direction of the fasteners (8) is perpendicular to the feeding shaft (1). The pairs of fasteners (8) are respectively arranged on opposite sides of the feeding shaft (1). One end of the fastener (8) facing into the clamp body (6) is provided with a locking part (13), which is adapted to engage with the locking part (12). A biasing member (9) is disposed between the clamp body (6) and the snap fastener (8). The biasing member (9) is adapted to apply a biasing force to the snap fastener (8) to make the pair of snap fasteners (8) move towards each other, so that the engaging member (13) is normally engaged with the engaging part (12) of the feeding shaft (1).

2. The roll material feeding and fixing device according to claim 1, characterized in that, An elastic buffer (4) is installed between the clamp body (6) and the roll material (2).

3. The roll material feeding and fixing device according to claim 2, characterized in that, It also includes a top material component, which is sleeved and installed on the feeding shaft (1). The top material component is adapted to be installed between the clamp body (6) and the roll material (2). The clamp body (6) has a buffer cavity at one end facing the top material component. One end of the top material component is slidably installed in the buffer cavity, and the other end abuts and cooperates with the roll material (2). The elastic buffer (4) is sleeved and installed on the top material component.

4. The roll material feeding and fixing device according to claim 3, characterized in that, A limiting block (5) is fixedly installed on one side of the clamp body (6) where the buffer cavity is provided. The top material extends through the limiting block (5) into the buffer cavity. A limiting part (11) is provided at one end of the top material in the buffer cavity. The limiting part (11) extends in a direction away from the axis of the top material.

5. The roll material feeding and fixing device according to claim 3 or 4, characterized in that, The top material is provided with a conical head (10) at one end facing the rolled material (2), and the end of the conical head (10) with a larger outer diameter is provided towards the clamp body (6).

6. The roll material feeding and fixing device according to any one of claims 1 to 4, characterized in that, The clamp body (6) is provided with a mating cavity, and a positioning block (14) is provided in the mating cavity. The positioning blocks (14) are arranged in pairs. The buckle (8) is provided with a positioning port. The positioning port is sleeved and installed on one of the paired positioning blocks (14). The biasing member (9) is installed between the other paired positioning block (14) and the buckle (8).

7. The roll material feeding and fixing device according to claim 6, characterized in that, The engaging component (13) is disposed on the inner side wall of the positioning port.

8. The roll material feeding and fixing device according to any one of claims 1 to 4, characterized in that, The biasing component (9) is an elastic component or a push rod assembly.

9. The roll material feeding and fixing device according to any one of claims 1 to 4, characterized in that, The engaging part (12) is a limiting slot or a limiting protrusion, and the engaging component (13) is a limiting protrusion or a limiting slot that cooperates with the engaging part (12).

10. The roll material feeding and fixing device according to claim 9, characterized in that, The width of the limiting slot is greater than the thickness of the limiting protrusion.

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