Milling and grinding device for modifying sealing ring of telescopic cylinder of drawing frame

Abstract

The utility model provides a milling and grinding device for modifying a sealing ring of a telescopic cylinder of a drawing frame, which comprises a milling machine, a chuck is arranged on a movable support plate of the milling machine, and a conversion seat for bearing a cylinder blank cap is detachably arranged at the top of the chuck. And four clamping plates which are opposite in pairs are arranged at the top of the conversion seat. The top of the chuck is provided with four inner supporting arms parallel to the axial direction of the chuck. The top of the inner supporting arm extends into the conversion base and can relatively move in the radial direction of the chuck. When the four inner supporting arms centrifugally move in the radial direction of the chuck, the transmission assembly can drive the clamping plate to lock the relative position of the air cylinder blank cap on the top of the conversion base. According to the four-jaw chuck, transformation is carried out on the basis of an original four-jaw chuck, that is, the detachable conversion base is additionally arranged on the original four-jaw chuck, positioning and fixing of the air cylinder blank cap are synchronously achieved through the radial centrifugal outer supporting and fixing effect of the inner supporting arms on the conversion base, subsequent milling and grinding operation of a milling machine on a copper ring is facilitated, and the four-jaw chuck is convenient, fast and efficient.

Description

Technical Field

[0001] This utility model relates to the field of drawing frame technology, specifically to a milling device for modifying the sealing ring of the telescopic cylinder of a drawing frame. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] The telescopic cylinder of a drawing frame is a key component of the drawing frame in the textile industry. It is mainly used to control the telescopic movement of certain parts of the drawing frame to achieve precise control and processing of fibers during the drawing process. The telescopic cylinder mainly consists of a cylinder body, piston and piston rod, seals, and a buffer device. The seals mainly include a sealing ring located inside a copper ring, used to prevent gas leakage and ensure the accuracy and stability of the cylinder's operation.

[0004] Currently, the drafting cylinder of the drawing frame experiences air leakage after a period of use. After inspection, it was found that the problem was caused by damage to the sealing ring inside the cylinder end cap. Replacing the entire cylinder would be too costly. Therefore, a similar sealing ring was purchased from the market as a replacement. However, the replacement sealing ring is thicker than the original. To ensure that the replacement sealing ring is compatible, the height of the copper ring inside the cylinder end cap was milled to be flush with the height of the end cap and the height of the replacement sealing ring. This ensures that the copper ring can completely block the replacement sealing ring, thus maintaining the overall cylinder stroke.

[0005] Because the cylinder end cap is square, most milling equipment currently uses four-jaw chucks that can only position and fix hollow cylindrical workpieces, making it inconvenient to effectively position the cylinder end cap before milling copper rings.

[0006] Therefore, this utility model proposes a milling device for modifying the sealing ring of the telescopic cylinder of a drawing frame, in order to solve the above-mentioned problems. Utility Model Content

[0007] The main purpose of this utility model is to provide a milling device for modifying the sealing ring of the telescopic cylinder of a drawing frame.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows: a milling device for modifying the sealing ring of the telescopic cylinder of a drawing frame, comprising a milling machine for milling the copper ring on the cylinder end cap, wherein a chuck is provided on the moving carrier plate of the milling machine, and a conversion seat for supporting the cylinder end cap is detachably provided on the top of the chuck.

[0009] The top of the conversion seat is provided with four opposing clamping plates, and the four clamping plates form a positioning space for clamping and fixing the cylinder cap.

[0010] The top of the chuck has four inner support arms parallel to its axis; the four inner support arms are evenly distributed around the chuck and correspond to the positions of the four clamping plates respectively.

[0011] The top of the inner support arm extends into the conversion seat and is capable of relative movement in the radial direction of the chuck;

[0012] The conversion seat is equipped with a transmission assembly. When the four inner support arms move centrifugally in the radial direction of the chuck, the transmission assembly can drive the clamping plate to lock the cylinder cap in the relative position on the top of the conversion seat.

[0013] Furthermore, the transmission assembly includes four bearing rods, which are radially inserted into the conversion seat near the bottom and correspond to the positions of the four inner support arms respectively; four axially extending transmission rods are inserted circumferentially into the conversion seat; four driven rods are radially inserted into the conversion seat near the top; the centripetal ends of the four bearing rods are in contact with the outer walls of the four inner support arms; the centrifugal ends of the four bearing rods are in sliding contact with the bottom ends of the four transmission rods; the top ends of the four transmission rods are in sliding contact with the centrifugal ends of the four driven rods; four moving arms parallel to the chuck axis are inserted into the top of the conversion seat, with the bottoms of the four moving arms extending into the conversion seat and vertically fixed to the outer walls of the four driven rods respectively; four clamping plates are connected to the four moving arms near the top outer wall respectively.

[0014] Furthermore, the bottom of the transmission rod has a first slope that slides and presses against the bearing rod, and the centrifugal end of the driven rod has a second slope that slides and presses against the top of the transmission rod.

[0015] Furthermore, the conversion seat has a first rod hole for axial movement of the transmission rod and a second rod hole for radial movement of the driven rod. A second telescopic rod is provided between the radial end of the driven rod and the corresponding hole wall of the second rod hole, and a second spring is sleeved on the outside of the second telescopic rod.

[0016] Furthermore, a socket is provided at the center of the top of the chuck, a positioning rod is inserted into the socket, a positioning block is fixed at the top of the positioning rod, and a movable groove is provided at the bottom of the conversion seat for the inner support arm to extend and move, and a positioning groove is provided on the top wall of the movable groove to engage with the positioning block.

[0017] Furthermore, a first telescopic rod is also provided between the movable arm and the clamping plate, and a first spring is also sleeved on the outside of the first telescopic rod; the top of the conversion seat is provided with a clearance groove for the movable arm to move radially.

[0018] The beneficial effects of this utility model are reflected in:

[0019] The present invention relates to a milling device for modifying the sealing ring of a telescopic cylinder of a drawing frame. It modifies the original four-jaw chuck by adding a detachable conversion seat to the original four-jaw chuck. The inner support arm uses the radial centrifugal external support to fix the conversion seat, and simultaneously achieves the positioning and fixing of the cylinder end cap, so as to facilitate the subsequent milling operation of the copper ring by the milling machine, which is convenient and efficient. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the overall front view structure of this utility model;

[0022] Figure 2 for Figure 1 A three-dimensional structural diagram of the chuck, converter seat, and cylinder end cap (the converter seat is in a fixed position on the chuck, and the cylinder end cap is in a non-fixed position on the converter seat);

[0023] Figure 3 for Figure 2 A partial cross-sectional structural diagram of the chuck and converter seat;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 for Figure 2 Cross-sectional structural diagram of the chuck and converter (the converter is in a non-positioning fixed state on the chuck);

[0026] Figure 6 for Figure 2 A top view of the inner turntable of the chuck.

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

[0028] 1. Milling machine; 2. Base; 3. Chuck; 4. Converter seat; 5. Clamping plate; 6. Inner support arm; 7. Movable groove; 8. Bearing rod; 9. Transmission rod; 10. Driven rod; 11. Moving arm; 12. First telescopic rod; 13. First ramp; 14. Second ramp; 15. First rod hole; 16. Second rod hole; 17. Positioning rod; 18. Positioning block; 19. Insertion hole; 20. Positioning groove; 21. Clearance groove; 22. First limit groove; 23. Turntable; 24. Second limit groove; 100. Cylinder end cap; 101. Copper ring. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0030] See Figures 1 to 6 .

[0031] The milling device for modifying the sealing ring of the telescopic cylinder of the drawing frame includes a milling machine 1 for milling the copper ring 101 on the cylinder end cap 100. A chuck 3 is provided on the moving plate of the milling machine 1. The bottom of the chuck 3 has a base 2, which is bolted to the moving plate of the milling machine 1.

[0032] The top of the chuck 3 is detachably provided with a conversion seat 4 for carrying the cylinder end cap 100.

[0033] The top of the conversion seat 4 is provided with four opposing clamping plates 5, which correspond to the four sides of the cylinder end cap 100. The four clamping plates 5 form a positioning space for clamping and fixing the cylinder end cap 100.

[0034] The top of the chuck 3 has four inner support arms 6 parallel to its axis. The four inner support arms 6 are evenly distributed around the chuck 3 and correspond to the positions of the four clamping plates 5 respectively.

[0035] The top of the inner support arm 6 extends into the conversion seat 4 and can move radially relative to the chuck 3.

[0036] The conversion seat 4 is equipped with a transmission assembly. When the four inner support arms 6 move centrifugally in the radial direction of the chuck 3, the transmission assembly can drive the clamping plate 5 to lock the cylinder cap 100 in the relative position at the top of the conversion seat 4.

[0037] In practice, before operation, the converter seat 4 is placed on top of the chuck 3, with each inner support arm 6 extending into the bottom of the converter seat 4. The cylinder cap 100 is placed on top of the converter seat 4, ensuring that the copper ring 101 faces upwards. At this time, the four inner support arms 6 on the drive chuck 3 are centrifugally moved to tighten and fix the converter seat 4 from the inside out on top of the chuck 3. During this process, the centrifugal movement of the inner support arms 6 is transmitted through the transmission assembly, causing the four clamping plates 5 to move radially towards the center, so that each clamping plate 5 approaches the side wall of the cylinder cap 100, thus completing the positioning and fixing of the cylinder cap 100 on the converter seat 4. Subsequently, the milling operation of the copper ring 101 can be performed using the milling cutter of a milling machine.

[0038] The advantage of this design is that it improves upon the original four-jaw chuck by adding a detachable conversion seat 4 to the chuck 3, enabling milling equipment that could previously only process pipe fittings to also be adapted for milling operations on the copper ring 101 on the square cylinder end cap 100 of this application, making it convenient and efficient.

[0039] It should be noted that a milling machine is a machine tool that uses a rotating milling cutter to perform multi-face machining on a workpiece, and it is widely used in industries such as machinery manufacturing, mold processing, and automobiles.

[0040] Furthermore, the chuck 3 is a universal four-jaw chuck for positioning and fixing pipe fittings. It has four jaws (inner support arms 6), which can rotate the internal turntable 23 under the drive of its own motor. This causes the walls of the four second limiting grooves 24 extending in a concentric arc on the turntable 23 to continuously rub and press against the outer walls of the bottom of the four inner support arms 6. This causes the four inner support arms 6 to move centrifugally in the four radially extending first limiting grooves 22 corresponding to the top of the chuck 3, thereby tightening and fixing the pipe fittings from the inside (e.g., Figure 6 Since the milling machine 1 and the four-jaw chuck are existing technologies, this application will not elaborate on them further.

[0041] In one embodiment, the transmission assembly includes four bearing rods 8, which are radially inserted into the conversion seat 4 near the bottom and correspond to the positions of the four inner support arms 6. Four axially extending transmission rods 9 are inserted circumferentially inside the conversion seat 4, and four driven rods 10 are radially inserted into the conversion seat 4 near the top. The centripetal ends of the four bearing rods 8 are in contact with the outer walls of the four inner support arms 6. The centrifugal ends of the four bearing rods 8 are in sliding contact with the bottom ends of the four transmission rods 9. The top ends of the four transmission rods 9 are in sliding contact with the centrifugal ends of the four driven rods 10. Four moving arms 11, parallel to the axial direction of the chuck 3, are inserted into the top of the conversion seat 4. The bottoms of the four moving arms 11 extend into the conversion seat 4 and are vertically fixed to the outer walls of the four driven rods 10. Four clamping plates 5 are connected to the four moving arms 11 near the top outer wall.

[0042] Thus, when the inner support arm 6 moves outward radially from the bottom of the conversion seat 4 to tighten and fix it, the movement of the conversion seat 4 can be used to realize the relative movement of the clamping plate 5 relative to the corresponding side wall of the cylinder end cap 100. This not only realizes the positioning and fixing of the conversion seat 4 on the chuck 3, but also realizes the positioning and fixing of the cylinder end cap 100 on the top of the conversion seat 4, which is convenient and reliable.

[0043] In one embodiment, the bottom of the transmission rod 9 has a first ramp 13 that slides and presses against the bearing rod 8, and the centrifugal end of the driven rod 10 has a second ramp 14 that slides and presses against the top of the transmission rod 9.

[0044] Thus, when the inner support arm 6 presses against the pressure rod 8, the pressure rod 8 will move centrifugally to press against the first ramp 13, forcing the transmission rod 9 to move axially upward. Then, the top of the transmission rod 9 will press against the second ramp 14, forcing the driven rod 10 to move radially inward, and then through the moving arm 11, it will drive the corresponding clamp 5 to approach the corresponding side wall of the cylinder cover 100.

[0045] In one embodiment, the conversion seat 4 has a first rod hole 15 for axial movement of the transmission rod 9 and a second rod hole 16 for radial movement of the driven rod 10. The first rod hole 15 and the corresponding second rod hole 16 are vertically connected. A second telescopic rod is provided between the radial end of the driven rod 10 and the corresponding hole wall of the second rod hole 16, and a second spring (not shown) is sleeved on the outside of the second telescopic rod.

[0046] Thus, when the driven rod 10 moves centripetally, it will compress the corresponding second telescopic rod and the second spring. The compressed second spring force can help the driven rod 10, transmission rod 9, pressure rod 8, moving arm 11 and clamping plate 5 return to their initial positions when the inner support arm 6 moves centripetally away from the pressure rod 8, so that the conversion seat 4 can be removed from the base 2, and the cylinder cap 100 after the copper ring 101 is milled can be removed from the top of the conversion seat 4.

[0047] In one embodiment, a chuck 3 has an insertion hole 19 at the top center, a positioning rod 17 is inserted into the insertion hole 19, a positioning block 18 is fixed to the top of the positioning rod 17, and a movable groove 7 is provided at the bottom of the conversion seat 4 for the inner support arm 6 to extend into and move. A positioning groove 20 is provided on the top wall of the movable groove 7 to engage with the positioning block 18.

[0048] Thus, the positioning rod 17 and the positioning block 18 can be easily installed and removed from the original chuck 3 through the insertion hole 19 and the positioning groove 20, so as to facilitate the initial positioning of the subsequent conversion seat 4 on the chuck 3.

[0049] A first telescopic rod 12 is also provided between the movable arm 11 and the clamping plate 5, and a first spring (not shown) is also sleeved on the outside of the first telescopic rod 12. A clearance groove 21 for radial movement of the movable arm 11 is provided on the top of the conversion seat 4.

[0050] Thus, the first telescopic rod 12 and the first spring between the clamping plate 5 and the moving arm 11 can buffer the contact force when the clamping plate 5 contacts the side wall of the cylinder block 100, thus avoiding damage to the cylinder block 100.

[0051] 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.

[0052] It should be noted that if the utility model embodiment involves directional indications (such as up and down), the directional indications are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indications will also change accordingly.

[0053] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, if the utility model embodiments involve descriptions of "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

Claims

1. A milling device for modifying the sealing ring of the telescopic cylinder of a drawing frame, characterized in that, The milling machine (1) is used to mill the copper ring (101) on the cylinder block (100). A chuck (3) is provided on the moving plate of the milling machine (1). A conversion seat (4) for carrying the cylinder block (100) is detachably provided on the top of the chuck (3). The top of the conversion seat (4) is provided with four pairs of opposing clamps (5), and the four clamps (5) form a positioning space for clamping and fixing the cylinder cap (100); The chuck (3) has four inner support arms (6) on top that are parallel to its axis; the four inner support arms (6) are evenly distributed around the chuck (3) and correspond to the positions of the four clamping plates (5); The top of the inner support arm (6) extends into the conversion seat (4) and is able to move radially relative to the chuck (3); The conversion seat (4) is equipped with a transmission assembly. When the four inner support arms (6) move centrifugally in the radial direction of the chuck (3), the transmission assembly can drive the clamp (5) to lock the cylinder cap (100) in the relative position on the top of the conversion seat (4).

2. The milling device for modifying the sealing ring of the telescopic cylinder of the drawing frame as described in claim 1, characterized in that, The transmission assembly includes four bearing rods (8), which are radially inserted into the conversion seat (4) near the bottom and correspond to the positions of the four inner support arms (6); four axially extending transmission rods (9) are inserted circumferentially inside the conversion seat (4); four driven rods (10) are radially inserted into the conversion seat (4) near the top; the centripetal ends of the four bearing rods (8) are in contact with the outer walls of the four inner support arms (6); the centrifugal ends of the four bearing rods (8) are in sliding and pressing contact with the bottom ends of the four transmission rods (9); the top ends of the four transmission rods (9) are in sliding contact with the centrifugal ends of the four driven rods (10); four moving arms (11) parallel to the chuck (3) are inserted at the top of the conversion seat (4), the bottoms of the four moving arms (11) extend into the conversion seat (4) and are vertically fixed to the outer walls of the four driven rods (10); the four moving arms (11) are connected to four clamps (5) near the top outer wall.

3. The milling device for modifying the sealing ring of the telescopic cylinder of the drawing frame as described in claim 2, characterized in that, The bottom of the transmission rod (9) has a first ramp (13) that slides and presses against the bearing rod (8), and the centrifugal end of the driven rod (10) has a second ramp (14) that slides and presses against the top of the transmission rod (9).

4. The milling device for modifying the sealing ring of the telescopic cylinder of the drawing frame as described in claim 2, characterized in that, The conversion seat (4) has a first rod hole (15) for the axial movement of the transmission rod (9) and a second rod hole (16) for the radial movement of the driven rod (10). A second telescopic rod is provided between the centripetal end of the driven rod (10) and the corresponding hole wall of the second rod hole (16). A second spring is sleeved on the outside of the second telescopic rod.

5. The milling device for modifying the sealing ring of the telescopic cylinder of the drawing frame as described in claim 1, characterized in that, The chuck (3) has an insertion hole (19) at the center of the top, a positioning rod (17) is inserted into the insertion hole (19), a positioning block (18) is fixed on the top of the positioning rod (17), and the bottom of the conversion seat (4) has an active groove (7) for the inner support arm (6) to extend and move, and the top wall of the active groove (7) has a positioning groove (20) that engages with the positioning block (18).

6. The milling device for modifying the sealing ring of the telescopic cylinder of the drawing frame as described in claim 1, characterized in that, A first telescopic rod (12) is also provided between the movable arm (11) and the clamp (5), and a first spring is also sleeved on the outside of the first telescopic rod (12); the top of the conversion seat (4) is provided with a clearance groove (21) for the movable arm (11) to move radially.

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