Shaftless unwinding structure of a float bowl

Abstract

The utility model discloses a kind of shaftless unwinding structures of floating cylinder, belong to non-woven fabric production technical field. Including the base being set along left and right direction and its left and right ends headstock and tailstock, headstock is equipped with driving motor, headstock and tailstock can be adjusted on base left and right direction;Headstock is equipped with the inner support chuck matched with the cylinder of floating cylinder, tailstock is equipped with the short shaft matched with the hollow shaft of floating cylinder, inner support chuck and short shaft are coaxially arranged with floating cylinder and respectively located the left and right ends of floating cylinder;Inner support chuck is drivingly connected with driving motor, short shaft is coaxially equipped with convex ring;The chuck claw of inner support chuck is inserted into cylinder and its inner support chuck tight one end of cylinder, short shaft is inserted in the end of hollow shaft and the convex ring on it is abutted on the corresponding end of hollow shaft. Without modification to floating cylinder, it is convenient to install floating cylinder;Also it will not pollute floating cylinder and non-woven fabric on it.

Description

Technical Field

[0001] This utility model belongs to the field of nonwoven fabric production technology, and specifically relates to a shaftless unwinding structure for a floatation cylinder. Background Technology

[0002] In the production process of spunlace nonwoven fabric, it is necessary to unwind the spunlace fabric when it needs to be wound up or dried. However, since the width of the spunlace fabric can reach more than 3 meters and the weight can reach several tons, the traditional float tube structure directly connects to the drive component through a mandrel set inside it, and the drive component directly drives the mandrel to rotate the float tube.

[0003] Existing float tube structures such as Figure 1 As shown, it includes a cylinder, a hollow shaft and multiple spoke reinforcing ribs between its two ends. The multiple spoke reinforcing ribs are evenly arranged around the hollow shaft, and a large number of through holes are evenly distributed on the cylinder.

[0004] Installing the bleaching cylinder onto the unwinding structure (such as an unwinding frame) via a rotating shaft presents the following problems: The shaft (approximately 100kg) is quite heavy, requiring two people to lift it, thread it through the bleaching cylinder, and then place it onto the unwinding structure of the drying unit. During the threading process, due to the shaft's weight, it is sometimes difficult for even two people to lift it, necessitating the use of a crane to lift it to a certain height for manual assistance. After the nonwoven fabric roll is dried, the shaft needs to be manually removed, which is extremely strenuous, and there is a risk of the shaft falling and injuring a foot. Furthermore, the shaft is prone to breakage or bending over prolonged operation.

[0005] In the prior art, shaftless unwinding structures are also provided. For example, patent application number CN202021412884.9 discloses a half-shaft unwinding device for spunlace nonwoven fabric, including a base, a float cylinder, two half-shafts, a drive unit, and a support assembly. The base is horizontally arranged, and two supports are vertically arranged on it at intervals along the left and right directions. The float cylinder is a cylindrical structure, which is horizontally arranged between the two supports. It has a hollow shaft arranged along its axial direction inside, and the two ends of the hollow shaft extend to the corresponding ends near the float cylinder. It is connected to the inner wall of the float cylinder by spoke reinforcing ribs. The two half-shafts are coaxially arranged at both ends of the float tube. The end of the half-shaft closest to the hollow shaft is fixedly connected to the corresponding end of the hollow shaft, and the end of the half-shaft furthest from the float tube is rotatably connected to the bracket on the corresponding side through a transmission unit. The drive unit is arranged on the base and is connected to any of the transmission units. It can drive the transmission unit to rotate the corresponding half-shaft and the hollow shaft. The support assembly has two sets, which are spaced apart in the left-right direction below the float tube and abut against the outer wall of the float tube. They are used to support the float tube.

[0006] This patent requires the installation of two half-shafts and two safety clamps. The half-shafts are embedded 100mm deep into the corresponding ends of the hollow shaft (a relatively large depth). The half-shafts and the corresponding ends of the hollow shafts need to be disassembled and assembled. In order to ensure that the drift tube can be driven to rotate, the half-shafts need to be tightly fitted with the hollow shafts, which makes it difficult to disassemble and assemble the half-shafts and the hollow shafts.

[0007] For example, patent application number CN202122361259.7 discloses a shaftless drift tube, comprising: a horizontally arranged cylindrical drift tube, with a driven gear fixedly disposed at each end, each driven gear being coaxially disposed with the drift tube, the drift tube and the driven gears on both sides constituting the drift tube body; and two gear drive devices respectively disposed at both ends of the drift tube, each gear drive device meshing with one of the driven gears to drive the two driven gears to rotate synchronously in the same direction. The gear drive device includes two transmission gears symmetrically disposed on the left and right sides of the driven gears, each transmission gear meshing with the driven gear and a driving gear, each transmission gear being rotatably connected to a support body, each driving gear being fixed on the shaft of a drive motor, each drive motor being fixed on a support platform, each support body and each support platform being fixed on a support surface, and the two drive motors driving the two driving gears to rotate synchronously in the same direction.

[0008] This patent requires driven gears to be installed at both ends of the float tube, which not only makes it inconvenient to use the float tube itself, but also requires modification of the float tube; in addition, iron filings and lubricating oil generated during the use of the gears may contaminate the non-woven fabric on the float tube, thereby affecting the quality of the non-woven fabric. Utility Model Content

[0009] To address the aforementioned problems, this utility model provides a shaftless unwinding structure for the float tube, eliminating the need for modification and facilitating its installation; it also prevents contamination of the float tube and its nonwoven fabric. The technical solution is as follows: This utility model embodiment provides a shaftless unwinding structure for a float tube, including a base 2 arranged in a left-right direction and a head 3 and a tail 4 at its left and right ends. The head 3 is equipped with a drive motor, and both the head 3 and the tail 4 can be adjusted left and right on the base 2. The head 3 is equipped with an internal support chuck 5 that cooperates with the body 11 of the float tube 1, and the tail 4 is equipped with a short shaft 6 that cooperates with the hollow shaft 12 of the float tube 1. The internal support chuck 5 and the short shaft 6 are both coaxially arranged with the float tube 1 and are located at the left and right ends of the float tube 1, respectively. The internal support chuck 5 is connected to the drive motor for transmission, and the short shaft 6 is coaxially provided with a protruding ring 8. The jaws of the internal support chuck 5 extend into the body 11 and internally support and clamp one end of the body 11. The short shaft 6 is inserted into the end of the hollow shaft 12, and the protruding ring 8 on it abuts against the corresponding end of the hollow shaft 12. Specifically, in this embodiment of the present invention, the internal support chuck 5 is a three-jaw chuck, with the outer side of its jaws abutting against the inner end of the cylinder 11, and the outer side of its jaws having a stepped surface that cooperates with the cylinder 11.

[0010] Preferably, in this embodiment of the present invention, the outer end of the short shaft 6 is rotatably mounted on the tailstock 4 via a bearing, and a plastic sleeve 7 is fitted and fixed on its inner end; the plastic sleeve 7 is inserted into the end of the hollow shaft 12, and is coaxially arranged with the short shaft 6, and its outer end is coaxially provided with a flange to form a convex ring 8; the outer diameter of the plastic sleeve 7 is less than or equal to the inner diameter of the hollow shaft 12, and the diameter of the convex ring 8 is greater than the inner diameter of the hollow shaft 12.

[0011] Specifically, in this embodiment of the present invention, the plastic sleeve 7 is a nylon tube.

[0012] Furthermore, the shaftless unwinding structure in this embodiment of the present invention also includes two lifting support mechanisms 9; the two lifting support mechanisms 9 are driven synchronously, and are located directly below both ends of the cylinder 11, respectively, and are used to support both ends of the cylinder 11. They can move up and down, and are mounted on the base 2, and are located inside the head 3 and tailstock 4 respectively.

[0013] The lifting support mechanism 9 in this embodiment includes a mounting plate 91, a support plate 92 arranged in a front-to-back direction, two guide rods 93 arranged side-by-side on the lower side of the support plate 92, two sliding sleeves 94 on the mounting plate 91, and a hydraulic cylinder 95 arranged vertically on the mounting plate 91. The mounting plate 91 is horizontally arranged and is mounted on the base 2. The support plate 92 is vertically arranged, and its upper side is a support groove that mates with the cylinder 11, located on the lower side of the corresponding end of the cylinder 11. The support groove is oriented towards... The upper part has an open V-shaped groove, trapezoidal groove, or arc groove; the lower parts of the two guide rods 93 are slidably disposed in two sliding sleeves 94, which pass downward through the mounting plate 91 and are vertically arranged; the hydraulic cylinder 95 is located between the two guide rods 93, and the upper end of its telescopic rod is fixedly connected to the lower middle part of the support plate 92; the two hydraulic cylinders 95 are driven synchronously; when the shaftless unwinding structure unwinds, the hydraulic cylinder 95 retracts and the support plate 92 separates from the cylinder 11; when the shaftless unwinding structure clamps the floating cylinder 1, the hydraulic cylinder 95 extends.

[0014] Furthermore, in this embodiment of the present invention, a limiting plate 96 is provided on the outer side of the support plate 92; the limiting plate 96 extends upward relative to the support plate 92; the bottom of the end face of the cylinder 11 abuts against the limiting plate 96 on the corresponding side or is located on the adjacent inner side of the limiting plate 96 on the corresponding side; the limiting plate 96 located on one side of the machine head 3 allows the inner support chuck 5 to pass through.

[0015] Specifically, in this embodiment of the present invention, the upper side of the limiting plate 96 located on one side of the machine head 3 is an arc surface; the arc surface is coaxially arranged with the inner support chuck 5, and its diameter is larger than the diameter of the inner support chuck 5, and its diameter is larger than the inner diameter of the cylinder 11 but smaller than the outer diameter of the cylinder 11. The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This utility model embodiment provides a shaftless unwinding structure for a float tube, which does not require modification of the float tube and makes it easy to install the float tube (no need for tight fit, the internal support chuck automatically clamps, and a lifting support mechanism can be used for assistance); at the same time, it will not contaminate the float tube and the non-woven fabric on it. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the float tube structure; Figure 2 This is a schematic diagram of the shaftless unwinding structure of the float cylinder before the float cylinder is clamped. Figure 3 This is a schematic diagram of the shaftless unwinding structure of the float cylinder when the float cylinder is clamped. Figure 4 This is a schematic diagram of the shaftless unwinding structure of the float drum during unwinding; Figure 5 This is a schematic diagram of the lifting support mechanism located on one side of the machine head; Figure 6 This is a schematic diagram of the lifting support mechanism located on one side of the tailstock.

[0017] In the diagram: 1. Float, 2. Base, 3. Head, 4. Tailstock, 5. Internal support chuck, 6. Short shaft, 7. Plastic sleeve, 8. Convex ring, 9. Lifting support mechanism; 11. Cylinder body, 12. Hollow shaft, 13. Spoke reinforcing ribs 91 Mounting plate, 92 Support plate, 93 Guide rod, 94 Sliding sleeve, 95 Hydraulic cylinder, 96 Limiting plate. Detailed Implementation

[0018] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0019] Example 1 See Figure 2-6Example 1 provides a shaftless unwinding structure for a float cylinder, including a base 2, a head 3, a tailstock 4, an internal support chuck 5, and a short shaft 6. The base 2 is arranged in a left-right direction, and has slide rails along its upper left-right direction for the head 3 and tailstock 4 to slide left and right. The head 3 and tailstock 4 are respectively located at the left and right ends of the base 2, and are slidably mounted on the slide rails (and locked by corresponding structures). Both can be adjusted left and right on the base 2 (e.g., by a lead screw structure). The head 3 is equipped with a drive motor (used to drive the float cylinder to rotate (maintaining a consistent linear speed)), and has an internal support chuck 5 that mates with the cylinder body 11 of the float cylinder 1. The tailstock 4 has a short shaft 6 that mates with the hollow shaft 12 of the float cylinder 1. Both the internal support chuck 5 and the short shaft 6 are coaxially arranged with the float cylinder 1 (ensuring the float cylinder is horizontal and always coaxial with the internal support chuck 5), and are arranged in a left-right direction, located at the left and right ends of the float cylinder 1, respectively. The internal support chuck 5 is connected to the drive motor, and the short shaft 6 is rotatably mounted on the tailstock 4. The base 2, headstock 3, tailstock 4, internal support chuck 5, and short shaft 6 can be found in common machine tool structures (such as CN201921300183.3, CN201220549560.9, 201510563985.3, etc.). Simply replace the ejector pin of a common machine tool with the short shaft 6; that is, the shaftless unwinding structure of the floating drum in this patent can be derived from a common machine tool.

[0020] The short shaft 6 is coaxially provided with a convex ring 8, the diameter of which is larger than the inner diameter of the hollow shaft 12. The jaws of the internal support chuck 5 extend into the cylinder 11 and its internal support clamps one end of the cylinder 11 (the end near the head 3, specifically the left or right end). The short shaft 6 is inserted into the end of the hollow shaft 12 (the end near the tailstock 4) with the convex ring 8 on it abutting against the corresponding end of the hollow shaft 12. Example 2 Example 2 provides a shaftless unwinding structure for a float cylinder, which is basically the same as the structure of Example 1, except that the internal support chuck 5 in this example is a three-jaw chuck, with the outer side of its jaws abutting against the inner end of the cylinder 11, and the outer side of its jaws having a stepped surface that mates with the cylinder 11. The internal support chuck 5 is a conventional structure, and its detailed description is omitted in this example.

[0021] Example 3 See Figure 2-6Example 3 provides a shaftless unwinding structure for a float drum, which is basically the same as the structure of Example 1, except that the shaftless unwinding structure in this example also includes two lifting support mechanisms 9. The two lifting support mechanisms 9 are driven synchronously and are located directly below the left and right ends of the drum body 11, respectively. They are used to support (when the hydraulic cylinder 95 is extended) the two ends of the drum body 11, and can move up and down. They are mounted on the base 2 and are located inside the head 3 and tailstock 4, respectively. The lifting support mechanism 9 includes a mounting plate 91, a support plate 92, a hydraulic cylinder 95, a limiting plate 96, two guide rods 93, and two sliding sleeves 94. The mounting plate 91 is horizontally arranged and is mounted on the base 2. The support plate 92 is arranged in the front-to-back direction and is vertically arranged. Its upper side is a support groove that cooperates with the drum body 11 and is located below the corresponding end of the drum body 11. The two sliding sleeves 94 are arranged side by side on the mounting plate 91 and are vertically arranged. They are circular sleeves. The support groove is an upward-opening V-shaped groove, trapezoidal groove, or arc groove, etc. Two guide rods 93 are arranged side by side, vertically, with their upper ends fixed to the lower side of the support plate 92. They are located at the front and rear of the support plate 92, respectively, and their lower parts are slidably disposed in two sliding sleeves 94. They pass downward through the mounting plate 91 and are smooth round rods. The hydraulic cylinder 95 is vertically arranged between the two guide rods 93. The bottom of its cylinder body is located on the mounting plate 91, and the upper end of its telescopic rod is fixedly connected to the lower middle part of the support plate 92. The two hydraulic cylinders 95 are driven synchronously. The limiting plate 96 is located on the outside of the support plate 92 and extends upward relative to the support plate 92. The bottom of the end face of the cylinder 11 abuts against the limiting plate 96 (extension) on the corresponding side or is located on the adjacent inner side of the limiting plate 96 (extension) on the corresponding side. The limiting plate 96 located on one side of the machine head 3 allows the inner support chuck 5 to pass through so that the inner support chuck 5 can work normally.

[0022] When the shaftless unwinding structure unwinds, the hydraulic cylinder 95 retracts, and the support plate 92 separates from the cylinder 11; when the shaftless unwinding structure clamps the drift cylinder 1, the hydraulic cylinder 95 extends, and the support plate 92 rests against the lower side of the corresponding end of the cylinder 11. The internal support chuck 5, the short shaft 6, and the drift cylinder 1 are coaxially arranged.

[0023] Example 4 Example 4 provides a shaftless unwinding structure for a drift cylinder, which is basically the same as the structure of Example 3, except that: in this example, the support groove is an upward-opening V-shaped groove, and the upper side of the limiting plate 96 located on one side of the head 3 is an arc surface. The arc surface is coaxially arranged with the inner support chuck 5, and its diameter is larger than the diameter of the inner support chuck 5, and its diameter is larger than the inner diameter of the cylinder 11 but smaller than the outer diameter of the cylinder 11. Example 5 See Figure 5Example 5 provides a shaftless unwinding structure for a float tube, which is basically the same as the structure of Example 4. The difference is that in this example, the tailstock 4 is located at the right end of the base 2 and the headstock 3 is located at the left end of the base 2, so the upper side of the left limiting plate 96 is an arc surface.

[0024] Example 6 See Figure 2-6 Example 6 provides a shaftless unwinding structure for a float tube, which is basically the same as the structure of Example 1, except that: in this example, the outer end of the short shaft 6 is rotatably mounted on the tailstock 4 via a bearing, and a plastic sleeve 7 is fixedly fitted onto its inner end. The plastic sleeve 7 is inserted into the end of the hollow shaft 12, coaxially arranged with the short shaft 6, and its outer end is coaxially provided with a flange to form a convex ring 8. The outer diameter of the plastic sleeve 7 is less than or equal to the inner diameter of the hollow shaft 12, preferably less, to facilitate installation. Specifically, if the outer diameter of the plastic sleeve 7 is less than the inner diameter of the hollow shaft 12, there is a small gap (e.g., less than 1 mm) between the plastic sleeve 7 and the hollow shaft 12 to avoid violent shaking of the float tube. In this case, the top of the plastic sleeve 7 rests against the inner top of the hollow shaft 12. If the outer diameter of the plastic sleeve 7 is equal to the inner diameter of the hollow shaft 12, the plastic sleeve 7 and the hollow shaft 12 are clearance-fitted to ensure that the plastic sleeve 7 can be inserted into the hollow shaft 12. The plastic sleeve 7 is designed to prevent wear on the hollow shaft 12 and reduce wear on the short shaft 6 itself (the plastic sleeve 7 is directly replaced after wear).

[0025] Example 7 Example 7 provides a shaftless unwinding structure for a float tube, which is basically the same as the structure of Example 6, except that the plastic sleeve 7 in this example is a nylon tube, and the material of the convex ring 8 is nylon.

[0026] The above description is only a preferred embodiment of the present utility model and is 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 should be included within the protection scope of the present utility model.

Claims

1. A shaftless unwinding structure for a float drum, comprising a base (2) arranged in a left-right direction and a head (3) and a tailstock (4) at its left and right ends, wherein the head (3) is equipped with a drive motor, and both the head (3) and the tailstock (4) can be adjusted left-right on the base (2); characterized in that, The head (3) is provided with an internal support chuck (5) that cooperates with the cylinder (11) of the float (1), and the tailstock (4) is provided with a short shaft (6) that cooperates with the hollow shaft (12) of the float (1). The internal support chuck (5) and the short shaft (6) are both coaxially arranged with the float (1) and are located at the left and right ends of the float (1) respectively. The internal support chuck (5) is connected to the drive motor. The short shaft (6) is coaxially provided with a convex ring (8). The claws of the internal support chuck (5) extend into the cylinder (11) and its internal support clamps one end of the cylinder (11). The short shaft (6) is inserted into the end of the hollow shaft (12) and the convex ring (8) on it abuts against the corresponding end of the hollow shaft (12).

2. The shaftless unwinding structure of the float tube according to claim 1, characterized in that, The internal support chuck (5) is a three-jaw chuck, with the outer side of its jaws abutting against the inner end of the cylinder (11), and the outer side of its jaws having a stepped surface that mates with the cylinder (11).

3. The shaftless unwinding structure of the float tube according to claim 1, characterized in that, The outer end of the short shaft (6) is rotatably mounted on the tailstock (4) via a bearing, and a plastic sleeve (7) is fitted and fixed on its inner end; the plastic sleeve (7) is inserted into the end of the hollow shaft (12), and is coaxially arranged with the short shaft (6), and its outer end is coaxially provided with a flange to form a convex ring (8); the outer diameter of the plastic sleeve (7) is less than or equal to the inner diameter of the hollow shaft (12), and the diameter of the convex ring (8) is greater than the inner diameter of the hollow shaft (12).

4. The shaftless unwinding structure of the float cylinder according to claim 3, characterized in that, The plastic sleeve (7) is a nylon tube.

5. The shaftless unwinding structure of the float cylinder according to claim 1, characterized in that, The shaftless unwinding structure also includes two lifting support mechanisms (9); the two lifting support mechanisms (9) are driven synchronously and are located directly below the two ends of the cylinder (11), respectively. They are used to support the two ends of the cylinder (11) and can move up and down. They are located on the base (2) and are located inside the head (3) and tailstock (4) respectively.

6. The shaftless unwinding structure of the float cylinder according to claim 5, characterized in that, The lifting support mechanism (9) includes a mounting plate (91), a support plate (92) arranged in the front-to-back direction, two guide rods (93) arranged side by side on the lower side of the support plate (92), two sliding sleeves (94) on the mounting plate (91), and a hydraulic cylinder (95) arranged vertically on the mounting plate (91); the mounting plate (91) is arranged horizontally and is mounted on the base (2); the support plate (92) is arranged vertically, and its upper side is a support groove that cooperates with the cylinder (11), which is located on the lower side of the corresponding end of the cylinder (11); the support groove is open upwards. The V-shaped groove, trapezoidal groove, or arc groove; the lower parts of the two guide rods (93) are slidably disposed in the two sliding sleeves (94), which pass downward through the mounting plate (91) and are vertically arranged; the oil cylinder (95) is located between the two guide rods (93), and the upper end of its telescopic rod is fixedly connected to the lower middle part of the support plate (92); the two oil cylinders (95) are driven synchronously; when the shaftless unwinding structure unwinds, the oil cylinder (95) retracts and the support plate (92) separates from the cylinder (11); when the shaftless unwinding structure clamps the floating cylinder (1), the oil cylinder (95) extends.

7. The shaftless unwinding structure of the float cylinder according to claim 6, characterized in that, The support plate (92) is provided with a limiting plate (96) on its outer side; the limiting plate (96) extends upward relative to the support plate (92); the bottom of the end face of the cylinder (11) abuts against the limiting plate (96) on the corresponding side or is located on the adjacent inner side of the limiting plate (96) on the corresponding side; the limiting plate (96) located on the side of the machine head (3) allows the inner support chuck (5) to pass through.

8. The shaftless unwinding structure of the float cylinder according to claim 7, characterized in that, The upper side of the limiting plate (96) located on one side of the machine head (3) is an arc surface; the arc surface is coaxially arranged with the inner support chuck (5), and its diameter is larger than the diameter of the inner support chuck (5), and its diameter is larger than the inner diameter of the cylinder (11) but smaller than the outer diameter of the cylinder (11).

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