Doffing breakage-proof device of spinning frame

Abstract

The utility model discloses a spinning frame doffing end breakage prevention device, which belongs to the technical field of textile equipment and comprises a steel ingot seat and a spindle blade fixed on the steel ingot seat and used for fixing an empty bobbin, and further comprises an outer support strip hinged with a covered channel oppositely arranged on the spindle blade, the piston is connected with a guide groove in the spindle blade in a sliding mode, a through groove is formed between the guide groove and the covered groove, the sliding rod is fixed to the bottom of the piston, and the sliding seat is fixed to the bottom of the sliding rod. The piston, the guide groove, the reset spring and other structures are used in cooperation, the impact force of the empty bobbin can be continuously buffered in the later period of falling of the empty bobbin, the falling speed of the empty bobbin becomes lower and lower, and finally the empty bobbin falls at the extremely low and relatively uniform speed and stops; the problem that the yarn reserved on the spindle blade is broken due to the impact force of the empty bobbin is greatly solved, and the effect of preventing the yarn from being broken when the automatic shakeout machine is inserted into the bobbin is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of textile equipment, in particular to a doffing and anti-breakage device for a spinning frame. Background Art

[0002] Generally, several turns of yarn will be wound on the surface of the spindle bar of the spinning frame, so that the spindle bar will rotate and wind the yarn onto the empty bobbin in the next round of work, so that the empty bobbin becomes a full bobbin. At present, the more advanced way of inserting the tube is to insert the tube through an automatic doffing machine. The doffing machine is hung on the spinning frame through a guide rail. When the doffing machine moves along the guide rail, the tube grabbing mechanism on the doffing machine pulls up the full bobbin, and the tube arrangement tube inserts the empty bobbin into the spindle bar of the spinning frame. Since the speed of the empty bobbin is getting faster and faster during the falling process, the impact force when it is completely settled is large, and it is easy to cut off the yarn reserved on the spindle bar. The existing doffing buffer device drives the elastic member to swing back and forth on the falling path of the empty bobbin through the telescopic rod, thereby achieving the impact force of buffering the falling of the empty bobbin and improving the anti-breakage effect of the automatic sand dropping machine when inserting the tube. However, it is difficult to keep the empty bobbin falling at a relatively slow and uniform speed in the second half of the fall, which has a greater impact on the effect of preventing the doffing from breaking.

[0003] The existing patent application number: 201520194652.3 discloses a buffer device and a doffing machine for preventing yarn breakage. The device provides an elastic member that can swing back and forth around the spindle rod to buffer the impact force of the empty bobbin when it falls, thereby reducing the probability of yarn breakage. In the above-mentioned prior art, when the device is in use, it only buffers the falling impact force of the empty bobbin by the reciprocating swing of the elastic member, which makes it difficult to make the empty bobbin fall at a relatively slow and uniform speed, and still affects the doffing and anti-breakage effect of the automatic doffing machine. Utility Model Content

[0004] The utility model aims to provide a spinning frame yarn doffing and anti-breakage device to solve the problem in the above background technology that it is difficult to make the empty yarn tube fall at a relatively slow and uniform speed, which will affect the yarn doffing and anti-breakage effect of the automatic doffing machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a spinning frame yarn doffing and anti-end-breakage device, comprising a steel ingot seat and a spindle rod fixed on the steel ingot seat for fixing an empty yarn tube, and the spinning frame yarn doffing and anti-end-breakage device also includes:

[0007] An outer support bar is hinged to a dark groove arranged on the spindle rod.

[0008] A piston is slidably connected to a guide groove arranged in the spindle rod, and a through groove is arranged between the guide groove and the dark groove.

[0009] A slide rod is fixed to the bottom of the piston.

[0010] A sliding seat is fixed to the bottom of the sliding rod.

[0011] The sliding sleeve is arranged in the guide groove to push the return spring of the sliding seat to return.

[0012] A support arm is provided between the outer support bar and the slide seat for linkage, and the support arm is inserted into the through slot.

[0013] Furthermore, the return spring is located at the bottom of the slide seat, and the return spring is also located at the bottom end of the guide groove.

[0014] Furthermore, two ends of the support arm are hinged to the outer support bar and the slide seat respectively, and the angle between the support arm and the top of the slide seat is less than 90°.

[0015] Furthermore, the spinning frame yarn doffing and anti-breakage device also includes an air hole arranged at the top of the spindle rod for air circulation, and the bottom end of the air hole is connected to the top end of the guide groove.

[0016] Furthermore, the spinning frame yarn doffing and anti-breakage device also includes a screw hole provided at the bottom of the ingot seat, and a threaded plug is threadedly connected to the inner thread of the screw hole.

[0017] Furthermore, the spinning frame yarn doffing and anti-breakage device also includes a support ring fixed between the ingot seat and the spindle rod for limiting the empty yarn tube, and the outer diameter of the support ring is larger than the maximum outer diameter of the empty yarn tube.

[0018] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0019] 1. The utility model can continuously buffer the impact force of the empty bobbin in the later stage of its falling by using the piston, the guide groove and the reset spring, so that the falling speed of the empty bobbin becomes slower and slower, and finally the falling speed is kept very low and relatively uniform and stops, which greatly prevents the yarn reserved on the spindle rod from being broken due to the impact force of the empty bobbin, and improves the anti-breakage effect when the automatic sand-falling machine is inserted;

[0020] 2. The utility model uses a piston, a guide groove, a reset spring and other structures in coordination. In the very short time when the empty bobbin contacts the outer support bar, most of the impact force is converted into a pulling force for pulling the piston downward through the outer support bar, the support arm, the slide seat and the slide rod. The piston is used to draw the space between the guide groove and the air hole into a negative pressure state, thereby greatly buffering the impact force of the empty bobbin in a very short time, further improving the buffering effect on the empty bobbin, and thus further improving the effect of preventing the yarn from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an axonometric drawing of the utility model;

[0022] Figure 2 It is the front view of the utility model;

[0023] Figure 3 for Figure 2 Half section view.

[0024] In the figure: 1. Ingot seat; 2. Ingot rod; 3. Blind groove; 4. External support bar; 5. Through groove; 6. Support arm; 7. Guide groove; 8. Sliding rod; 9. Piston; 10. Sliding seat; 11. Air hole; 12. Return spring; 13. Screw hole; 14. Threaded plug; 15. Support ring. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0026] like Figures 1 to 3 As shown, a spinning frame doffing and anti-breakage device comprises a steel ingot seat 1 and a spindle rod 2 fixed on the steel ingot seat 1 for fixing an empty bobbin. The spinning frame doffing and anti-breakage device also comprises:

[0027] The top of the outer support bar 4 is hinged to the top of the dark groove 3 arranged on the spindle rod 2, and the outer support bar 4 is distributed on both sides of the outside of the spindle rod 2 in an eight-shaped shape. At the same time, the top of the outer support bar 4 is located in the middle of the spindle rod 2, so that it can completely buffer the impact force accumulated when the empty yarn tube falls in the upper half of the spindle rod 2. If the top of the outer support bar 4 is set within the range of the upper half or lower half of the spindle rod 2, the impact force of the empty yarn tube falling is less than the lower limit of the elastic buffering of the outer support bar 4, and it is difficult to completely settle in place, or the impact force of the empty yarn tube is greater than the upper limit of its elastic buffering, which increases the probability of the yarn reserved on the spindle rod 2 being broken, and the depth of the dark groove 3 is greater than the thickness of the outer support bar 4, so that when the empty yarn tube is completely settled on the spindle rod 2, the outer support bar 4 can be completely compressed into the dark groove 3, avoiding affecting the settling of the empty yarn tube and affecting the subsequent yarn winding quality and efficiency.

[0028] A piston 9 is slidably connected to a guide groove 7 arranged in the spindle rod 2, and a through groove 5 is arranged between the guide groove 7 and the dark groove 3.

[0029] A slide rod 8 fixed to the bottom of the piston 9.

[0030] A slide seat 10 is fixed to the bottom of the slide rod 8 .

[0031] The sliding sleeve is arranged in the guide groove 7 to push the return spring 12 of the slide seat 10 to return.

[0032] The support arm 6 for linkage is arranged between the outer support bar 4 and the slide 10, and the support arm 6 is inserted in the through groove 5. When the spindle rod 2 is unloaded, the return spring 12 lifts the slide 10 to a certain height and keeps it stationary. At the same time, the support arm 6 is supported by the elastic force of the return spring 12 to expand it in an inverted eight-shaped shape and spread the outer support bar 4 in an eight-shaped shape, so that the distance between the bottom ends of the two outer support bars 4 is larger than the maximum inner diameter of the empty bobbin, so that the outer support bar 4 can play a good buffering and blocking effect. The impact force accumulated in the early stage of the empty bobbin falling on the spindle rod 2 will shrink into the dark groove 3 by squeezing the outer support bar 4 in a very short time of contact with the outer support bar 4, and most of the impact force is converted into The thrust that moves the slide 10 downward makes the slide 10 have a large dynamic acceleration. The downward moving slide 10 will drive the slide rod 8 and the piston 9 to move downward synchronously, and make the moving speed change from the maximum to the minimum in a very short time. In this process, when the piston moves downward quickly, the top of the guide groove 7 will be quickly drawn into a relative vacuum in a very short time, forming a large negative pressure suction force to buffer most of the impact force, and then cooperate with the elastic deformation of the reset spring 12 to continuously buffer the remaining impact force for a relatively long time, so that the falling speed of the empty bobbin becomes slower and slower, and its late falling speed on the spindle rod 2 is smaller and relatively uniform, so as to avoid it from breaking the yarn reserved on the spindle rod 2 and improve the anti-breakage effect of the yarn top.

[0033] In this embodiment, the return spring 12 is located at the bottom of the slide 10, and the return spring 12 is also located at the bottom end of the guide groove 7. The elastic force of the return spring 12 is used to lift the slide 10, the slide rod 8, and the piston 9 to a certain height and keep them stationary. At the same time, the support arm 6 and the outer support bar 4 can be spread apart, so that the distance between the bottom ends of the two outer support bars 4 is greater than the maximum inner diameter of the empty bobbin, so that it has a good buffering and blocking effect when the empty bobbin falls, and greatly reduces the falling speed of the empty bobbin.

[0034] When the sliding seat 10 is lowered, the rear end of the outer support bar 4 is pushed out of the dark groove 3 by the support arm 6, so that the outer support bar 4 can be easily supported by the return spring 12, and the bottom end of the outer support bar 4 can be pushed out of the dark groove 3 by the support arm 6 to facilitate the contact with the outer support bar 4 when the empty yarn tube falls, and the outer support bar 4 can be quickly and slowly retracted into the dark groove 3, so as to buffer and intercept the empty yarn tube, greatly reduce its falling speed, and elastically remove the excess impact force of the empty yarn tube falling, so that it can move downward only under its own gravity in the late stage of falling, and use the return spring 12 to continuously buffer the power of the gravity of the empty yarn tube until the empty yarn tube falls into place, so as to avoid the problem of yarn breaking due to the large impact force of the empty yarn tube falling, greatly reduce the probability of yarn breaking, and improve the anti-breaking effect of yarn.

[0035] In this embodiment, the spinning machine yarn doffing and anti-breakage device also includes an air hole 11 for air circulation arranged on the top of the spindle rod 2, and the bottom end of the air hole 11 is connected with the top end of the guide groove 7, so that in the early stage when the outer support bar 4 buffers the impact force of the empty yarn tube falling, the piston 9 can perform a vacuum operation on the top end of the guide groove 7 in a very short time, so as to realize a sudden slowdown in the falling speed of the empty yarn tube, and in the later stage when the outer support bar 4 buffers the impact force of the empty yarn tube falling, the air is relatively slowly replenished to the top end of the guide groove 7 through the air hole, and cooperates with the elastic deformation of the reset spring 12 to relatively evenly buffer the falling impact force of the empty yarn tube, so that it falls at a slower speed until it stops, thereby protecting the yarn reserved on the spindle rod 2 and avoiding the problem of breakage due to the large impact force.

[0036] In the present embodiment, the spinning frame yarn doffing anti-breakage device also includes a screw hole 13 provided at the bottom of the ingot seat 1, and a threaded plug 14 is connected to the inner thread of the screw hole 13. The inner diameter of the screw hole 13 is larger than the inner diameter of the guide groove 7, so that during assembly, the piston 9, the slide rod 8, the slide seat 10, the support arm 6 and the reset spring 12 can be inserted into the guide groove 7. The setting of the threaded plug 14 facilitates the sealing of the screw hole 13 during assembly, and also facilitates quick disassembly during maintenance and overhaul, thereby improving the efficiency of maintenance and overhaul.

[0037] In this embodiment, the spinning frame yarn doffing anti-breakage device also includes a support ring 15 fixed between the ingot seat 1 and the spindle rod 2 for limiting the position of the empty yarn tube. The outer diameter of the support ring 15 is larger than the maximum outer diameter of the empty yarn tube, so that it can be used in conjunction with the spindle rod 2 to limit the position of the empty yarn tube and fix it to prevent it from circumferential rotation during winding and affecting the winding quality and efficiency.

[0038] The above description is only the preferred embodiment of the utility model, and the parts not described in the utility model can be implemented by adopting or drawing on existing technologies. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. The changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the utility model should also fall within the protection scope of the utility model.

Claims

1. A doffing and anti-breakage device for a spinning frame, comprising a steel ingot seat (1) and a spindle rod (2) fixed on the steel ingot seat (1) for fixing an empty bobbin, characterized in that: The spinning frame doffing and anti-breakage device also includes: An outer support bar (4) hingedly connected to a dark groove (3) arranged on the spindle rod (2); a piston (9) slidably connected to a guide groove (7) provided in the spindle rod (2), wherein a through groove (5) is provided between the guide groove (7) and the dark groove (3); A slide rod (8) fixed to the bottom of the piston (9); A sliding seat (10) fixed to the bottom of the sliding rod (8); A return spring (12) is slidably sleeved in the guide groove (7) and is used to push the slide seat (10) to return to its original position; A support arm (6) is provided between the outer support bar (4) and the slide seat (10) for linkage, and the support arm (6) is inserted into the through slot (5).

2. The spinning frame doffing and yarn breakage prevention device according to claim 1, characterized in that: The return spring (12) is located at the bottom of the slide seat (10), and the return spring (12) is also located at the bottom end of the guide groove (7).

3. The spinning frame yarn doffing and yarn breakage prevention device according to claim 2, characterized in that: The two ends of the support arm (6) are respectively hinged on the outer support bar (4) and the slide seat (10), and the angle between the support arm (6) and the top of the slide seat (10) is less than 90°.

4. The spinning frame doffing and yarn breakage prevention device according to claim 3 is characterized in that: The spinning frame yarn doffing and yarn breakage prevention device further comprises an air hole (11) provided at the top of the spindle rod (2) for air circulation, the bottom end of the air hole (11) being in communication with the top end of the guide groove (7).

5. The spinning frame doffing and yarn breakage prevention device according to claim 4, characterized in that: The spinning frame yarn doffing and anti-breakage device further comprises a screw hole (13) provided at the bottom of the ingot seat (1), wherein the screw hole (13) is internally threadedly connected to a threaded plug (14).

6. The spinning frame doffing and yarn breakage prevention device according to claim 5, characterized in that: The spinning frame yarn doffing and anti-breakage device further comprises a support ring (15) fixed between the steel ingot seat (1) and the spindle rod (2) for limiting the position of the empty yarn tube, wherein the outer diameter of the support ring (15) is greater than the maximum outer diameter of the empty yarn tube.

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