Drafting top pin for a spinning machine
By adding a floating pressure roller to the middle of the main body of the spinning machine, the problem of insufficient fiber gripping in the middle was solved, and the uniformity and quality of fiber drafting were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO QIZHENG MASCH MFG CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-06-02
AI Technical Summary
In existing spinning machines, the upper pin cannot provide an effective gripping point in the middle of the fiber, resulting in poor fiber drafting uniformity and affecting fiber quality.
Floating pressure rollers are added to the left and right sides of the upper pin body of the spinning machine, and the upper leather ring cooperates with the floating pressure rollers to form a flexible gripping point in the middle of the fiber, thereby enhancing the control of the fiber.
It improves the uniformity and quality of fiber stretching and enhances the control of the fiber during the stretching process.
Smart Images
Figure CN224313753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spinning machinery and equipment, specifically to an upper pin for drafting in spinning machinery. Background Technology
[0002] Roller drafting spinning equipment uses upper and lower pins to hold both ends of the fiber, ensuring stable and reliable fiber speed changes and improving the uniformity of fiber drafting. For example... Figure 1 As shown, the currently used top pin is equipped with a roller, which, in conjunction with the rollers, can only hold one end of the fiber. The other end of the fiber is held by a pair of rollers. The top pin cannot provide any additional holding points for the fiber, and there are no other holding points between the two. This results in a large distance between the holding points at both ends of the fiber, weakening the control force on the middle of the fiber. Consequently, the fiber stretching uniformity in the middle is poor, ultimately affecting the fiber quality. Utility Model Content
[0003] The purpose of this invention is to provide an upper pin for drafting in spinning machinery, which solves the current problems of weak control over the middle of the fiber and poor fiber drafting uniformity.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A drafting pin for spinning machinery includes a main body, a leather roller at the rear end of the main body, and floating pressure rollers symmetrically arranged on the left and right sides of the middle part of the main body; the leather roller, the floating pressure roller, and the outer side of the front end of the main body are fitted with an upper leather ring.
[0006] Furthermore, the main body includes a base and a rubber ring support frame, the rubber ring support frame being disposed at the front end of the base; the base is provided with a rubber roller groove, the rubber roller being disposed in the rubber roller groove; a second support rod is provided at the front end of the base, and the floating pressure roller is disposed on both sides of the second support rod.
[0007] Furthermore, the floating pressure roller includes an outer roller and an inner roller. The inner roller is disposed on both sides of the second support rod, and the outer roller is sleeved on the outside of the inner roller. There is a gap between the inner wall of the outer roller and the outer surface of the inner roller. Cover plates with through holes are provided on both sides of the outer roller, and the through holes and cover plates are arranged concentrically. The through holes and the inner roller are in clearance fit.
[0008] Furthermore, the rubber ring support frame is provided with a locking part, and a limiting block is provided on the locking part. The limiting block is provided with a locking groove that matches the locking part. When the limiting block is locked onto the rubber ring support frame, the limiting block contacts the outer roller, causing the inner roller to be eccentric to the through hole.
[0009] Furthermore, both the floating pressure roller and the skin roller are provided with adaptation grooves.
[0010] Furthermore, a first rubber ring limiting frame is provided above the base, and a second rubber ring limiting frame is provided at the bottom of the rubber ring support frame; the first rubber ring limiting frame includes an inner baffle and an outer baffle, and the upper rubber ring is placed between the inner baffle and the outer baffle; the second rubber ring limiting frame includes an inner limiting plate and an outer limiting plate, and the upper rubber ring is placed between the inner limiting plate and the outer limiting plate.
[0011] Furthermore, the top of the main body is provided with an elastic sheet and a limiting seat. The elastic sheet is detachably connected to the main body by bolts. The limiting seat includes a left side plate and a right side plate, and the top of the elastic sheet is located between the left side plate and the right side plate.
[0012] Furthermore, a locking block is provided at the bottom of the front end of the main body, which is used to connect the spacer block.
[0013] Furthermore, there are two epithelial rings, symmetrically arranged on both sides of the main body.
[0014] By adopting the above technical solution, the beneficial technical effects of this utility model are:
[0015] This invention adds floating pressure rollers on the left and right sides of the middle part of the main body, and makes the upper skin ring pass around the outside of the floating pressure roller. The upper skin ring and the lower skin ring that matches the upper skin ring are used for fiber stretching. When the fiber stretching length is long, the floating pressure roller will form a new flexible gripping point in the middle of the fiber, increase the control force on the fiber, make the fiber stretching more uniform, and improve the quality of fiber stretching. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the existing sales process.
[0017] Figure 2 This is a schematic diagram of a drafting pin used in spinning machinery.
[0018] Figure 3 This is a schematic diagram of the main body.
[0019] Figure 4 This is a schematic diagram of a rubber band support frame.
[0020] Figure 5 This is a cross-sectional view of the floating pressure roller. Detailed Implementation
[0021] like Figure 2As shown, a drafting pin for spinning machinery includes a main body 1. A rubber roller 2 is disposed at the rear end of the main body 1, and floating pressure rollers 3 are symmetrically disposed on the left and right sides of the middle of the main body 1. Upper rubber rings 4 are fitted onto the rubber roller 2, the floating pressure rollers 3, and the outer side of the front end of the main body 1, and are symmetrically disposed on both sides of the main body 1. A limiting block 5 is detachably connected to the main body 1. When the limiting block 5 is installed on the main body 1, it provides a front-to-back direction limit for the floating pressure rollers 3, preventing the outer roller 31 of the floating pressure rollers 3 from detaching from the inner roller 32. The upper pin is configured on the roller drafting spinning equipment, which includes a rocker arm and a frame. The upper pin is elastically connected to the rocker arm. The frame is equipped with multiple rollers. The floating pressure roller 3 and the skin roller 2 are both adapted to the rollers. The frame is equipped with a lower skin ring adapted to the upper skin ring 4. The fiber is placed between the upper skin ring 4 and the lower skin ring. The rollers arranged in front and behind have a speed difference when rotating. The fiber is drafted by the speed difference. The floating pressure roller 3 is located in the middle of the fiber. The upper skin ring 4 applies pressure to the floating pressure roller 3 through its own elasticity, so that the floating pressure roller 3 cooperates with the corresponding roller to achieve flexible gripping of the middle of the fiber, increase the new gripping point in the middle of the fiber, shorten the length of the fiber between two adjacent gripping points, make the roller drafting spinning equipment have stronger control over the fiber, make the fiber drafting more uniform, and improve the quality of fiber drafting.
[0022] like Figure 3 and Figure 4 As shown, the main body 1 includes a base 11 and a rubber ring support frame 12, with the rubber ring support frame 12 disposed at the front end of the base 11; the base 11 is provided with a rubber roller groove 13, and the rubber roller 2 is disposed on the rubber roller groove 13; the rubber roller 2 includes a connecting shaft and bearings, with the bearings disposed at both ends of the connecting shaft, and the connecting shaft disposed in the rubber roller groove 13; a second support rod 16 is provided at the front end of the base 11, and the floating pressure roller 3 is disposed on both sides of the second support rod 16.
[0023] like Figure 5As shown, the floating pressure roller 3 includes an outer roller 31 and an inner roller 32. The inner roller 32 is disposed on both sides of the second support rod 16, and the outer roller 31 is sleeved on the outside of the inner roller 32. There is a gap between the inner wall of the outer roller 31 and the outer surface of the inner roller 32, and the inner roller 32 can move in the outer roller 31. Cover plates 34 with through holes 33 are provided on both sides of the outer roller 31. The through holes 33 and the cover plates 34 are arranged concentrically. The through holes 33 and the inner roller 32 are clearance fit. The diameter of the through holes 33 is equal to or slightly larger than the diameter of the circle formed by the outer surface of the inner roller 32. When the through holes 33 and the inner roller 32 are concentric, the outer roller 31 can be removed from the inner roller 32. The rubber ring support frame 12 is provided with a locking part 35, and the limiting block 5 is provided with a locking groove that is adapted to the locking part 35. When the limiting block 5 is locked onto the rubber ring support frame 12, the limiting block 5 contacts the outer roller 31, causing the inner roller 32 to be eccentric with the through hole 33. The limiting block 5 applies pressure to the inner roller 32, causing the inner roller 32 to be eccentric with the through hole 33 in the lateral direction, preventing the outer roller 31 from falling off the inner roller 32.
[0024] Both the floating pressure roller 3 and the skin roller 2 are provided with adaptable grooves 36, which are high on both sides and low in the middle. The adaptable grooves 36 are used to provide flexible pressure to the fiber, making the fiber stretching more uniform. The top of the main body 1 is provided with an elastic plate 41 and a limiting seat 42. The elastic plate 41 is detachably connected to the main body 1 by bolts. The limiting seat 42 includes a left side plate and a right side plate, with the top of the elastic plate 41 located between the left side plate and the right side plate. The elastic plate 41 is used to elastically connect with the frame and apply pressure to the fiber through elasticity. The limiting seat 42 is used to limit the position of the upper pin on the frame and improve the installation accuracy. The bottom front end of the main body 1 is provided with a locking block, which is used to connect a spacer block 43. The spacer block 43 is provided with mounting holes that fit the locking block. The spacer block 43 is installed on the locking block through the mounting holes. The spacer block 43 is used to adjust the height of the front end of the upper pin and the frame to accommodate fibers of different materials.
[0025] A first rubber ring limiting frame 44 is provided above the base 11, and a second rubber ring limiting frame 45 is provided at the bottom of the rubber ring support frame 12. The first rubber ring limiting frame 44 includes an inner baffle and an outer baffle, with the upper rubber ring 4 positioned between the inner baffle and the outer baffle. The second rubber ring limiting frame 45 includes an inner limiting plate and an outer limiting plate, with the upper rubber ring 4 positioned between the inner limiting plate and the outer limiting plate. The first rubber ring limiting frame 44 is used to limit the upper movement of the upper rubber ring 4 in the left-right direction, and the second rubber ring limiting frame 45 is used to limit the lower movement of the upper rubber ring 4 in the left-right direction. The first rubber ring limiting frame 44 and the second rubber ring limiting frame 45 effectively prevent the upper rubber ring 4 from falling off the rubber roller 2 or the floating pressure roller 3.
[0026] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A drafting pin for spinning machinery, characterized in that, It includes a main body, with a leather roller at the rear end of the main body and floating pressure rollers symmetrically arranged on the left and right sides of the middle of the main body; the leather roller, the floating pressure roller and the outer side of the front end of the main body are fitted with an upper leather ring.
2. The upper pin for drafting in spinning machinery according to claim 1, characterized in that, The main body includes a base and a rubber ring support frame, with the rubber ring support frame located at the front end of the base; the base is provided with a rubber roller groove, and the rubber roller is disposed in the rubber roller groove; a second support rod is provided at the front end of the base, and the floating pressure roller is located on both sides of the second support rod.
3. The upper pin for drafting in spinning machinery according to claim 2, characterized in that, The floating pressure roller includes an outer roller and an inner roller. The inner roller is arranged on both sides of the second support rod, and the outer roller is sleeved on the outside of the inner roller. There is a gap between the inner wall of the outer roller and the outer surface of the inner roller. Cover plates with through holes are provided on both sides of the outer roller. The through holes and the cover plates are arranged concentrically. The through holes and the inner roller are in clearance fit.
4. The upper pin for drafting in spinning machinery according to claim 3, characterized in that, The rubber ring support frame is provided with a locking part, and a limiting block is provided on the locking part. The limiting block is provided with a slot that matches the locking part. When the limiting block is locked onto the rubber ring support frame, the limiting block contacts the outer roller, causing the inner roller to be eccentric to the through hole.
5. The upper pin for drafting in spinning machinery according to claim 1, characterized in that, Both the floating pressure roller and the skin roller are provided with adaptation grooves.
6. The upper pin for drafting in spinning machinery according to claim 2, characterized in that, The base is provided with a first rubber ring limiting frame above it, and the bottom of the rubber ring support frame is provided with a second rubber ring limiting frame. The first rubber ring limiting frame includes an inner baffle and an outer baffle, and the upper rubber ring is placed between the inner baffle and the outer baffle. The second rubber ring limiting frame includes an inner limiting plate and an outer limiting plate, and the upper rubber ring is placed between the inner limiting plate and the outer limiting plate.
7. The upper pin for drafting in spinning machinery according to claim 1, characterized in that, The main body is provided with an elastic sheet and a limiting seat at its top. The elastic sheet is detachably connected to the main body by bolts. The limiting seat includes a left side plate and a right side plate, and the top of the elastic sheet is located between the left side plate and the right side plate.
8. The upper pin for drafting in spinning machinery according to claim 1, characterized in that, The main body has a locking block at the bottom of its front end, which is used to connect the spacer block.
9. A drafting pin for spinning machinery according to claim 1, characterized in that, There are two epithelial rings, symmetrically arranged on both sides of the main body.