Winding drum structure

Abstract

The utility model relates to the technical field of winding drums, and provides a winding drum structure which comprises a winding drum body, the winding drum body is defined by four single plates in a surrounding mode, a driving mechanism for driving the four single plates to expand or shrink is arranged in the winding drum body, a jaw arc-shaped plate is provided with a containing groove in the length direction of a jaw, and the jaw arc-shaped plate is provided with a clamping groove. The jaw is composed of a fixing plate fixed to an opening of the containing groove and a closing plate located in the containing groove, the closing plate is connected with the bottom of the containing groove through a first reset spring, and a jaw oil cylinder is further arranged between the closing plate and the containing groove. The telescopic end of the jaw oil cylinder faces the sealing plate and can push the sealing plate to be tightly attached to the fixing plate in a closed mode, and when the sealing plate is attached to the fixing plate, the first reset spring is in a compressed state. The clamping device has the advantages that the closing plate and the fixing plate are pushed to be closed through the jaw oil cylinder, larger and more stable clamping force is provided for closing of the jaw, and plate materials are prevented from loosening when clamped.

Description

Technical Field

[0001] This utility model relates to the technical field of winding drums, and more specifically, to a winding drum structure. Background Technology

[0002] Winding drums are key equipment in the continuous processing of materials such as metals, paper, films, and textiles. They are used to wind materials into rolls. Existing winding drums all use purely mechanical jaws, relying solely on mechanical tension to close the jaws and clamp the sheet material. However, due to limitations in processing precision and errors, winding drums may not be able to clamp the sheet material securely. Especially after prolonged use, repeated stress leads to wear or fatigue, causing a decrease in clamping force. The jaws may not be able to engage effectively, resulting in loosening of the sheet material. Furthermore, uneven sheet thickness can also contribute to this loosening. Utility Model Content

[0003] This utility model proposes a winding drum structure that can push the closing plate and the fixed plate to close through the jaw cylinder, providing a larger and more stable clamping force for the jaw closure and preventing the sheet material from loosening when clamped.

[0004] Therefore, the technical solution adopted is as follows:

[0005] A winding drum structure includes a drum body surrounded by four individual plates, including two opposing arc-shaped plates and two other opposing arc-shaped plates with jaws. The drum body has an internal driving mechanism for expanding or contracting the four individual plates. Each arc-shaped plate has a receiving groove along its length. The jaws consist of a fixed plate fixed at the opening of the receiving groove and a closing plate located inside the receiving groove. The closing plate is connected to the bottom of the receiving groove via a return spring. A jaw cylinder is also provided between the closing plate and the receiving groove. The fixed end of the jaw cylinder is fixed to the bottom of the receiving groove, and the telescopic end faces the closing plate and can push the closing plate to fit tightly against the fixed plate. When the closing plate fits against the fixed plate, the return spring is compressed.

[0006] A further technical solution is that the contact surfaces of the fixing plate and the sealing plate are inclined surfaces.

[0007] A further technical solution is that the jaw cylinder has several jaws evenly arranged along the receiving groove.

[0008] A further technical solution is that the oil hole of the jaw cylinder is located at its fixed end, and a connecting oil passage is provided on the jaw arc plate, and the connecting oil passage is connected to the oil hole of each jaw cylinder.

[0009] A further technical solution is that the drive mechanism includes a rotating spindle and a push-pull rod. Four drive blocks are evenly fixed around one end of the rotating spindle along its axis. The four drive blocks correspond one-to-one with the four individual plates and are connected by a return spring. The push-pull rod passes coaxially through the rotating spindle, is located at the center of the four drive blocks, and is slidably connected to the rotating spindle. One end of the push-pull rod located on the side of the rotating spindle is connected to a push-pull cylinder, and the other end is fixed with a cross fork.

[0010] Each pair of adjacent drive blocks has a drive slat, and the four drive slats are fixed to one branch of the cross fork. Each drive slat has a corresponding extrusion slat on its outer side. The four extrusion slats are located in the gaps between the four individual plates. The drive slats can be pushed outward of the drum body by the extension and retraction of the push-pull cylinder. The outer surface of the extrusion slat is an arc surface. When the extrusion slat is pushed out in the gap between the individual plates, the four extrusion slats and the outer surfaces of the four individual plates form a complete cylindrical surface of the drum body, and at this time, the return spring is in a compressed state.

[0011] A further technical solution is that a number of active helical teeth are arranged and fixed on the driving helical bar, and passive helical teeth that match the active helical teeth are fixed on the extrusion helical bar. The passive helical teeth can be inserted into the tooth gap of the active helical teeth and slidably connected with them. Limiting copper pads are fixed at both ends of the drum body, and the extrusion helical bar is located in the middle of the limiting copper pads on both sides.

[0012] A further technical solution is that the width of the extrusion slats gradually decreases towards the outer side of the roll body.

[0013] The working principle and beneficial effects of this application are as follows:

[0014] 1. By creating a receiving groove on the curved jaw plate and arranging a jaw cylinder inside the receiving groove, the jaw cylinder can push the closing plate and the fixing plate to close, providing a larger and more stable clamping force for the jaw closure and preventing the plate from loosening during clamping.

[0015] 2. There are several clamping cylinders in the receiving groove, which are evenly distributed in the receiving groove, so that multiple points of the closed plate can be provided with clamping force. Even when the plate thickness is uneven, the extension length of the clamping cylinders at different points can be adjusted to ensure that the plate can be stably clamped at each position. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a cross-sectional view of the structure of this application (this drawing is in landscape orientation).

[0018] Figure 2 This is a cross-sectional view of the structure from another angle (this drawing is horizontal).

[0019] Figure 3 This is a schematic diagram of the structure of the driving skein and the extrusion skein described in this application;

[0020] Figure 4 This is a schematic diagram of the structure of the jaw arc plate described in this application;

[0021] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the jaw closure described in this application;

[0022] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the jaws opened as described in this application;

[0023] Figure 7 This is a side view of the main body of the roll described in this application;

[0024] Figure 8 This is a schematic diagram of the structure of the receiving groove described in this application.

[0025] In the diagram: 100, main body of the drum; 101, jaws; 1, single plate; 11, arc plate; 12, jaw arc plate; 121, receiving groove; 122, fixing plate; 123, sealing plate; 124, return spring one; 125, jaw cylinder; 13, oil hole; 14, connecting oil passage; 2, rotating spindle; 21, drive block; 3, push-pull rod; 4, return spring two; 5, push-pull cylinder; 6, cross fork; 7, drive slant bar; 71, active slant tooth; 8, extrusion slant bar; 81, passive slant tooth; 9, limiting copper pad. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0027] like Figures 1-8As shown, a winding drum structure includes a drum body 100, which is surrounded by four individual plates 1. The drum body 100 includes two opposing arc-shaped plates 11 and two other opposing arc-shaped jaw plates 12 with jaws 101. The drum body 100 has a driving mechanism inside that drives the four individual plates 1 to expand or contract. The arc-shaped jaw plates 12 have receiving grooves 121 along the length of the jaws 101. The jaws 101 are fixed by fixing plates 122 at the openings of the receiving grooves 121. It consists of a sealing plate 123 located inside the receiving groove 121. The sealing plate 123 is connected to the bottom of the receiving groove 121 by a return spring 124. A jaw cylinder 125 is also provided between the sealing plate 123 and the receiving groove 121. The fixed end of the jaw cylinder 125 is fixed to the bottom of the receiving groove 121, and the telescopic end faces the sealing plate 123 and can push the sealing plate 123 to fit tightly with the fixed plate 122. When the sealing plate 123 fits with the fixed plate 122, the return spring 124 is in a compressed state.

[0028] In this embodiment, a receiving groove 121 is provided on the jaw arc plate 12. The receiving groove 121 contains a jaw cylinder 125. The jaw 101 consists of a fixing plate 122 fixed at the opening of the receiving groove 121 and a closing plate 123 located inside the receiving groove 121. When the closing plate 123 contacts the fixing plate 122, the jaw 101 is closed; otherwise, the jaw 101 is open. The position of the fixing plate 122 remains unchanged. When it is necessary to close the jaw 101, the closing plate 123 is pushed by the jaw cylinder 125 to move towards the fixing plate 122. The specific distance of movement is determined by the thickness of the sheet material clamped at the jaw 101, ensuring that the sheet material is stably clamped and does not loosen. At this time, the return spring 124 is in a compressed state. When it is necessary to open the jaw 101, the telescopic rod of the jaw cylinder 125 retracts, and the return spring 124 releases its elastic force to automatically drive the closing plate 123 to return away from the fixing plate 122 and open the jaw 101. The clamping force is provided by the jaw cylinder 125. Even if other components such as the fixing plate 122 and the closing plate 123 are worn or have precision errors, the clamping force will not be affected, thus firmly clamping the plate and preventing loosening.

[0029] like Figure 2As shown, several jaw cylinders 125 are evenly arranged along the receiving groove 121, so that multiple jaw cylinders 125 act simultaneously on the sealing plate 123, providing clamping force at multiple points on the sealing plate 123. Even when facing uneven sheet material thickness, the extension length of the jaw cylinders 125 at different points can be adjusted to cause slight deformation of the sealing plate 123 during clamping, thus conforming to the sheet material with uneven thickness and ensuring stable clamping at every position of the sheet material. The oil hole 13 of the jaw cylinder 125 is located at its fixed end, and the jaw arc plate 12 has a connecting oil passage 14, which is connected to the oil hole 13 of each jaw cylinder 125 and connected to an external oil supply system.

[0030] like Figures 5-7 As shown, the contact surfaces of the fixing plate 122 and the closing plate 123 are inclined, meaning the jaws 101 have an inclined structure. Utilizing the wedge principle, when the sheet material is tightened, the jaws 101 experience a combined radial and axial force, causing them to clamp the sheet material more tightly on the drum, preventing it from loosening due to increased tension during winding. Simultaneously, the inclined surface facilitates the smooth entry of the sheet material into the jaws 101, reducing the difficulty of manual alignment. After winding is complete, it also makes it easier to quickly release the sheet material by reversing the movement or releasing pressure, facilitating unloading.

[0031] The drive mechanism of this embodiment includes a rotating spindle 2 and a push-pull rod 3. Four drive blocks 21 are fixed evenly around one end of the rotating spindle 2 along its axis. The four drive blocks 21 correspond one-to-one with the four single plates 1 and are connected by a return spring 4. The push-pull rod 3 coaxially passes through the rotating spindle 2, is located at the center of the four drive blocks 21, and is slidably connected to the rotating spindle 2. One end of the push-pull rod 3 located on the side of the rotating spindle 2 is connected to a push-pull cylinder 5, and the other end is fixed with a cross fork 6.

[0032] Each pair of adjacent drive blocks 21 has a drive spur 7 in the gap. The four drive spurs 7 are fixed to one branch of the cross fork 6, and each drive spur 7 has a corresponding extrusion spur 8 on its outer side. The four extrusion spurs 8 are located in the gaps of the four individual plates 1. The drive spurs 7 can be pushed outward of the drum body 100 by the extension and retraction of the push-pull cylinder 5. The outer surface of the extrusion spur 8 is an arc surface. When the extrusion spur 8 is pushed out in the gap of the individual plates 1, the four extrusion spurs 8 and the outer surfaces of the four individual plates 1 form a complete cylindrical surface of the drum body 100, and at this time the return spring 2 4 is in a compressed state.

[0033] Several active oblique teeth 71 are fixedly arranged in an array on the drive oblique bar 7. Passive oblique teeth 81 that match the active oblique teeth 71 are fixed on the extrusion oblique bar 8. The passive oblique teeth 81 can be inserted into the tooth gap of the active oblique teeth 71 and slidably connected to them. Limiting copper pads 9 are fixed at both ends of the drum body 100. The extrusion oblique bar 8 is located in the middle of the limiting copper pads 9 on both sides.

[0034] like Figures 1-3 As shown, when the drive mechanism is working, the push-pull cylinder 5 can drive the push-pull rod 3 to reciprocate. Under the action of the cross fork 6 at the other end of the push-pull rod 3, the drive slant 7 will move synchronously with the push-pull rod 3. The matching extrusion slant 8, restricted by the active slant 71 and the passive slant 81 between the two, will also move accordingly. Since the extrusion slant 8 is located in the middle of the limiting copper pads 9 on both sides of the drum body 100, it cannot generate axial displacement. Therefore, when displacement occurs between the active slant 71 and the passive slant 81, the passive slant 81... The pressure from the inclined surfaces of the two surfaces will cause the pressure strips 8 to move outward toward the outside of the drum body 100. That is, the four pressure strips 8 expand outward simultaneously toward the outside of the drum body 100. Since the pressure strips 8 are located in the gaps between the four individual plates 1, the four individual plates 1 will be squeezed and expanded synchronously by the pressure strips 8 until the outer surfaces of the four pressure strips 8 and the four individual plates 1 form a complete cylindrical surface of the drum body 100. At this time, the return spring 2 4 is in a compressed state. Then, the jaws 101 can be opened by the jaw cylinder 125.

[0035] Conversely, the push-pull rod 3 drives the drive bar 7 to move in the opposite direction, no longer exerting a pushing force on the compression bar 8. Therefore, the compression bar 8 no longer exerts a force on the four individual plates 1. The elastic force of the return spring 4 causes the four individual plates 1 to retract and reset. When the four individual plates 1 retract, they will press the compression bar 8 in the opposite direction, causing it to reset synchronously. Simultaneously, the jaw cylinder 125 closes the jaws 101. The width of the compression bar 8 gradually decreases towards the outer side of the drum body 100, making it easier for it to slide relative to the four individual plates 1 and to compress the individual plates 1 on both sides within the gaps between them.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A winding drum structure, comprising a drum body (100), the drum body (100) being surrounded by four individual plates (1), including two opposing arc-shaped plates (11) and two other opposing arc-shaped plates (12) having jaws (101), the drum body (100) having a driving mechanism inside for driving the four individual plates (1) to expand or contract, characterized in that: The jaw arc plate (12) has a receiving groove (121) along the length of the jaw (101). The jaw (101) is composed of a fixing plate (122) fixed at the opening of the receiving groove (121) and a closing plate (123) located inside the receiving groove (121). The closing plate (123) is connected to the bottom of the receiving groove (121) by a return spring (124). There is also a jaw cylinder (125) between the closing plate (123) and the receiving groove (121). The fixed end of the jaw cylinder (125) is fixed at the bottom of the receiving groove (121), and the telescopic end faces the closing plate (123) and can push the closing plate (123) to fit tightly with the fixing plate (122). When the closing plate (123) fits with the fixing plate (122), the return spring (124) is in a compressed state.

2. The winding drum structure according to claim 1, characterized in that, The contact surfaces of the fixing plate (122) and the closing plate (123) are inclined surfaces.

3. The winding drum structure according to claim 1, characterized in that, The jaw cylinder (125) has several cylinders evenly arranged along the receiving groove (121).

4. The winding drum structure according to claim 3, characterized in that, The oil hole (13) of the jaw cylinder (125) is located at its fixed end, and the jaw arc plate (12) is provided with a connecting oil passage (14), which is connected to the oil hole (13) of each jaw cylinder (125).

5. A winding drum structure according to claim 1, characterized in that, The drive mechanism includes a rotating spindle (2) and a push-pull rod (3). Four drive blocks (21) are evenly fixed around one end of the rotating spindle (2) along its axis. The four drive blocks (21) correspond one-to-one with the four single plates (1) and are connected by a return spring (4). The push-pull rod (3) passes through the rotating spindle (2) coaxially and is located at the center of the four drive blocks (21) and is slidably connected to the rotating spindle (2). One end of the push-pull rod (3) located on the side of the rotating spindle (2) is connected to a push-pull cylinder (5), and the other end is fixed with a cross fork (6). Each pair of adjacent drive blocks (21) has a drive slat (7) in the gap. The four drive slats (7) are fixed to a branch of the cross fork (6) respectively, and each drive slat (7) has a corresponding extrusion slat (8) on its outer side. The four extrusion slats (8) are located in the gaps of the four single plates (1). The drive slats (7) can be pushed outward of the drum body (100) by the extension and retraction of the push-pull cylinder (5). The outer surface of the extrusion slats (8) is an arc surface. When the extrusion slats (8) are pushed out in the gaps of the single plates (1), the four extrusion slats (8) and the outer surfaces of the four single plates (1) form a complete cylindrical surface of the drum body (100), and at this time the reset spring (4) is in a compressed state.

6. A winding drum structure according to claim 5, characterized in that, The drive slant (7) has several active slant teeth (71) arranged and fixed in an array. The extrusion slant (8) has passive slant teeth (81) that match the active slant teeth (71). The passive slant teeth (81) can be inserted into the tooth gap of the active slant teeth (71) and slidably connected to them. The two ends of the drum body (100) are fixed with limiting copper pads (9). The extrusion slant (8) is located in the middle of the limiting copper pads (9) on both sides.

7. A winding drum structure according to claim 5, characterized in that, The width of the extrusion sliver (8) gradually decreases toward the outside of the roll body (100).

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