A kind of yarn conveying mechanism of spinning machine

Abstract

A yarn conveying mechanism for a spinning machine, comprising a roller block and a cradle hinged on the roller block, wherein a middle roller and a front roller are movably arranged in sequence along the outlet direction on the roller block, and a middle roller rubber roller and a front roller rubber roller are movably arranged in sequence along the outlet direction on the cradle, a lower pin is arranged on the roller block between the middle roller and the front roller, an arc surface is arranged in the middle of the upper surface of the lower pin, an upper pin cover plate assembly is arranged above the lower pin, the upper pin cover plate assembly comprises a cover plate with an arc surface matching the arc surface of the lower pin, an annular conveyor belt, and a tensioner, the annular conveyor belt is sleeved on the outer surface of the cover plate and the middle roller rubber roller, and the upper pin cover plate is connected to the cover plate support member through a universal joint mechanism. Since the upper pin cover plate and the cover plate support member are connected through a universal joint mechanism, the spatial position between the upper pin cover plate and the cover plate support member can be conveniently adjusted, thereby conveniently adjusting the positional relationship between the upper pin cover plate and the lower pin, and the positional relationship between the cover plate support member and the cradle.

Description

Technical Field

[0001] The invention relates to a conveying mechanism for yarn strips of a spinning machine. Background Art

[0002] refer to Figure 1 As shown, Chinese patent document CN211227482U discloses a fiber strand conveying mechanism of a ring spinning machine, which includes a roller block 31, a cradle 9 hinged on the roller block through a cradle holding tube 33, a rear roller shaft 32, a middle roller shaft 3, and a front roller shaft 1 are movably provided on the roller block 31 in sequence along the outlet direction, and a rear roller rubber roller 35, a middle roller rubber roller 4, and a front roller rubber roller 30 are movably provided on the cradle 9 in sequence along the outlet direction. A lower pin 2 is arranged on the roller pier between the roller shafts 1, an arc-shaped surface is arranged in the middle part of the upper surface of the lower pin 2, an upper pin cover plate assembly is arranged above the lower pin, and the upper pin cover plate assembly includes an upper pin cover plate 6 with an arc-shaped surface matching the arc-shaped surface of the lower pin 2, an annular conveyor belt 7, a cover plate support 13, a tensioning spring 8, and a tensioning block 5. The annular conveyor belt 7 is sleeved on the outer surface of the upper pin cover plate 6 and the middle roller rubber roller 4, and the upper pin cover plate 6 is tightened by the tensioning spring 8. The upper pin cover plate assembly is connected to the cradle 9.

[0003] During operation, the rear roller rubber roller 35, the middle roller rubber roller 4, and the front roller rubber roller 30 rotate clockwise, and the rear roller shaft 32, the middle roller shaft 3, and the front roller shaft 1 rotate counterclockwise, and the yarn is transported to the yarn guide hook 36 to the steel collar 38, and is twisted around the spindle tube 37 to form the yarn. Among them, the rear roller shaft 32, the middle roller shaft 3, and the front roller shaft 1 are actively rotating, and the rear roller rubber roller 35, the middle roller rubber roller 4, and the front roller rubber roller 30 are passively rotating. Generally, the middle roller shaft The rotation speed of 3 is 1.1-1.8 times that of the rear roller shaft 32, and the rotation speed of the front roller shaft 1 is 10-100 times that of the middle roller shaft 3. The coarse yarn becomes thinner after stretching. Since the speed ratio of the middle roller rubber roller 4 and the front roller rubber roller 30 is large, the whiskers change dramatically. By setting the upper pin cover plate assembly, the upper pin cover plate 6, the lower pin 2, and the conveyor belt 7 form a stable friction space, so that the arc surface of the upper pin cover plate 6 and the arc surface of the lower pin 2 form a stable match, so as to control the whiskers.

[0004] The fiber strand conveying mechanism is provided with an upper pin cover assembly, which makes it easy to maintain, saves maintenance costs and time, and reduces the power consumption of drafting. However, during the installation of the fiber strand conveying mechanism, due to the processing accuracy and installation level of the device, the following problems may occur, including but not limited to them.

[0005] like Figure 7 As shown, the cradle 9 is tilted relative to the lower pin 2 as a whole; Figure 8 As shown, the lower pin 2 is skewed relative to the front roller shaft 1 and the middle roller shaft 3; Fig. 9As shown, the upper pin cover assembly 51 is tilted relative to the cradle 9; and the upper pin cover is offset relative to the cover support, which will cause the arc surface of the upper pin cover 6 and the arc surface of the lower pin 2 to fail to form a stable matching gap, resulting in yarn quality fluctuations. Summary of the invention

[0006] The technical problem to be solved by the present invention is to solve the above-mentioned deficiencies of the prior art and provide a yarn conveying mechanism for a spinning machine, so that the spatial relationship between the upper pin cover plate and the cover plate support can be easily adjusted so that the arc surface of the upper pin cover plate and the arc surface of the lower pin form a stable fitting gap.

[0007] The technical solution adopted by the present invention to solve the above technical problems is:

[0008] A yarn conveying mechanism for a spinning machine, comprising a roller block and a cradle hinged on the roller block, a middle roller and a front roller being movably arranged in sequence along the line-out direction on the roller block, a middle roller rubber roller and a front roller rubber roller being movably arranged in sequence along the line-out direction on the cradle, a lower pin being arranged on the roller block between the middle roller and the front roller, an arc-shaped surface being arranged in the middle of the upper surface of the lower pin, an upper pin cover plate assembly being arranged above the lower pin, the upper pin cover plate assembly comprising a cover plate with an arc-shaped surface matching the arc-shaped surface of the lower pin, an annular conveyor belt, and a tensioner, the annular conveyor belt being sleeved on the cover plate and the outer surface of the middle roller rubber roller, and characterized in that the upper pin cover plate is connected to the cover plate support by a universal joint mechanism.

[0009] More specifically, the universal joint mechanism includes an articulated block seat, an articulated block, an articulated block short axis, and an articulated block long axis. The articulated block seat is fixed on the upper pin cover plate, the articulated block long axis is fixed in the cover plate support, and the upper hole of the articulated block is sleeved on the articulated block long axis; the articulated block short axis is fixed on the articulated block seat, and the lower hole of the articulated block is sleeved on the articulated block short axis; the hole on the articulated block that matches the articulated block short axis and the articulated block long axis is larger than the axial diameter of the articulated block short axis and the articulated block long axis, and the upper hole and the lower hole on the articulated block are rounded or chamfered.

[0010] More specifically, the universal joint mechanism includes a cross hinge block and an hinge block seat. The hinge block seat is fixed on the upper pin cover plate. The cross hinge block is provided with an upper pin hole and a lower pin hole which are perpendicular to each other. The long axis is rotatably connected to the upper pin hole and its two ends are fixed to the cover plate support. The short axis is rotatably connected to the lower pin hole and its two ends are fixed to the hinge block seat. Since the long axis and the short axis are cross-shaped and can both rotate with the hinge block, the upper pin cover plate can perform universal rotation relative to the cover plate support.

[0011] More specifically, the universal joint mechanism includes a spherical hole on the hinge block seat, the hinge block, and a spherical hole on the cover plate support. Balls are respectively arranged at both ends of the hinge block, and the balls are inserted into the spherical holes. In this way, when the hinge block seat is fixed on the upper pin cover plate, the upper pin cover plate can perform universal rotation relative to the cover plate support.

[0012] Preferably, the hinge block is made of elastic material, so that the elasticity between the upper pin cover plate and the cover plate support is better and the position is easier to adjust.

[0013] Preferably, a spacing block is provided, and the spacing block is fixed on two side edges of the upper pin cover plate, so that a stable fitting gap is formed between the arc surface of the upper pin cover plate and the arc surface of the lower pin separated by the spacing block.

[0014] Compared with the prior art, the advantage of the present invention is that since the upper pin cover plate and the cover plate support are connected by a universal joint mechanism, the spatial position between the upper pin cover plate and the cover plate support can be easily adjusted, thereby conveniently adjusting the positional relationship between the upper pin cover plate and the lower pin, and the positional relationship between the cover plate support and the cradle, thereby stabilizing the yarn quality and greatly reducing unexpected drafting situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure in which the roving strands of an existing spinning machine are drawn into yarn.

[0016] Figure 2 The utility model is a schematic diagram of the fitting of the upper pin cover plate assembly and the lower pin of the existing spinning machine.

[0017] Figure 3 It is a schematic diagram of the gap formed between the upper pin cover and the lower pin of the spinning machine.

[0018] Figure 4 The utility model is a schematic diagram of installing the pin cover plate assembly on the cradle of the existing spinning machine.

[0019] Figure 5 Schematic diagram of the existing spinning machine drafting mechanism when the cradle is opened.

[0020] Figure 6 Schematic diagram of the existing spinning machine drafting mechanism cradle when pressurized.

[0021] Figure 7 It is a schematic diagram showing that the existing transmission mechanism cradle is offset relative to the lower pin.

[0022] Figure 8 It is a schematic diagram of the deviation of the lower pin of the existing transmission mechanism relative to the roller shaft.

[0023] Fig. 9 The present invention is a schematic diagram showing that the upper pin cover assembly of the existing transmission mechanism is offset relative to the cradle.

[0024] Fig.10 , Fig.11 It is a structural schematic diagram of a universal joint mechanism according to an embodiment of the present invention.

[0025] Fig.12It is a structural schematic diagram of a universal joint mechanism according to another embodiment of the present invention.

[0026] Fig.13 , Fig.14 It is a structural schematic diagram of a universal joint mechanism according to yet another embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1-14 As shown, the fiber strand conveying mechanism of the spinning machine includes a roller block 31, a cradle 9 hinged on the roller block through a cradle holding rod 33, a rear roller shaft 32, a middle roller shaft 3, and a front roller shaft 1 are movably arranged on the roller block 31 in sequence along the outlet direction, a rear roller rubber roller 35, a middle roller rubber roller 4, and a front roller rubber roller 30 are movably arranged on the cradle 9 in sequence along the outlet direction, a lower pin 2 is arranged on the roller block 31 between the middle roller shaft 3 and the front roller shaft 1, and An arc-shaped surface is arranged in the middle part of the upper surface of the lower pin 2, and an upper pin cover plate assembly 51 is arranged on the cradle middle grab 91. The upper pin cover plate assembly 51 includes an upper pin cover plate 6 with an arc-shaped surface matching the arc-shaped surface of the lower pin 2, a cover plate support 13, an annular conveyor belt 7, a tensioning spring 8, and a tensioning block 5. The annular conveyor belt 7 is sleeved on the outer surfaces of the upper pin cover plate 6 and the middle roller rubber roller 4, and the upper pin cover plate 6 is tensioned by the tensioning spring 8. The upper pin cover plate assembly 51 is connected to the cradle 9.

[0029] like Figure 4 , Figure 5 As shown, the cradle 9 is in an open state, the upper pin cover assembly 51 is mounted on the cradle middle catch 91 of the cradle 9, the cradle middle catch is mounted on the cradle main lever 95, the cradle main lever 95 is mounted on the cradle body 94, the cradle body 94 is mounted on the cradle hinge seat 93, the cradle hinge seat 93 is mounted on the cradle holding rod 33, the cradle holding rod 33 is mounted on the cradle holding rod seat 92, the cradle holding rod seat 92 is mounted on the roller pier 31, the lower pin 2 is mounted on the lower pin support seat 19, and the lower pin support seat 19 is mounted on the roller pier 31.

[0030] Another example Figure 2 , Figure 4 As shown, an upper pin spring 16 and a spring cover 15 are provided on the cover support 13. The upper pin spring 16 is placed in the spring groove 131 of the cover support 13. The spring cover 15 is pressed down by the cradle 9 and transmitted to the cover support 13 through the upper pin spring 16. The upper pin cover plate 6 is connected to the cover support 13 through the hinge block 17 and the hinge block seat 18. The spring cover 15 is pressed down by the cradle 9 and transmitted to the cover support 13 through the upper pin spring 16, so that the upper pin cover plate 6 obtains a downward pressure, and the arc surface of the upper pin cover plate 6 and the arc surface of the lower pin 2 form a stable matching gap.

[0031] The upper pin cover plate 6 is connected to the cover plate support 13 via a universal joint mechanism, so that the direction between the cover plate support 13 and the upper pin cover plate 6 can be changed arbitrarily according to the environment, making it easy to eliminate errors generated during device manufacturing and errors caused by the installation environment.

[0032] The universal joint mechanism can specifically have the following structures.

[0033] like Fig.10 , Fig.11 As shown, the universal joint mechanism includes an articulated block seat 18, an articulated block 17, an articulated block short axis 23, and an articulated block long axis 24. The articulated block seat 18 is fixed on the upper pin cover plate 6, the articulated block long axis 24 is fixed in the cover plate support 13, and the upper hole of the articulated block 17 is sleeved on the articulated block long axis 24; the articulated block short axis 23 is fixed to the articulated block seat 18, and the lower hole of the articulated block 17 is sleeved on the articulated block short axis 23; the hole on the articulated block 17 that matches the articulated block short axis 23 and the articulated block long axis 24 is larger than the axial diameter of the articulated block short axis 23 and the articulated block long axis 24, and the hole on the articulated block 17 is rounded or chamfered, so that the upper pin cover plate 6 can perform universal rotation relative to the cover plate support 13.

[0034] like Fig.12 As shown, the universal joint mechanism includes a cross hinge block 25 and a hinge block seat 18. The hinge block seat 18 is fixed on the upper pin cover plate 6. The cross hinge block 25 is provided with an upper pin hole and a lower pin hole which are perpendicular to each other. The long axis 24 is rotatably connected to the upper pin hole and its two ends are fixed to the cover plate support 13. The short axis 23 is rotatably connected to the lower pin hole and its two ends are fixed to the hinge block seat 18. Since the long axis 24 and the short axis 23 are cross-intersected and can rotate with the hinge block 25, the upper pin cover plate 6 can perform universal rotation relative to the cover plate support 13.

[0035] like Fig.13 , Fig.14 As shown, the universal joint mechanism includes a spherical hole 271 on the hinge block seat 27, the hinge block 28, and a spherical hole 131 of the cover support 13. Balls 281 and 282 are respectively provided at the two ends of the hinge block 28. The ball 281 is inserted into the spherical hole 271, and the ball 282 is inserted into the spherical hole 131. In this way, when the hinge block seat 27 is fixed on the upper pin cover plate 6, the upper pin cover plate 6 can perform universal rotation relative to the cover support 13.

[0036] The hinge block 28 is made of elastic material, so that the elasticity between the upper pin cover plate 6 and the cover plate support 13 is better and the position is easier to adjust.

[0037] like Figure 2 As shown, a spacing block 20 is also provided, and the spacing block 20 is fixed on two side edges of the upper pin cover plate 6, so that the arc surface of the upper pin cover plate 6 and the arc surface of the lower pin 2 are separated by the spacing block 20 to form a stable matching gap.

Claims

1. A yarn conveying mechanism of a spinning machine, comprising a roller block, a cradle hinged on the roller block, a middle roller and a front roller being movably arranged on the roller block in sequence along the outlet direction, a middle roller rubber roller and a front roller rubber roller being movably arranged on the cradle in sequence along the outlet direction, a lower pin being arranged on the roller block between the middle roller and the front roller, a curved surface being arranged in the middle of the upper surface of the lower pin, an upper pin cover plate assembly being arranged above the lower pin, the upper pin cover plate assembly comprising a cover plate with a curved surface matching the concave and convex curved surface of the lower pin, an annular conveyor belt, and a tensioner, the annular conveyor belt being sleeved on the outer surface of the cover plate and the middle roller rubber roller, characterized in that: The upper pin cover plate and the cover plate support are connected via a universal joint mechanism.

2. The yarn conveying mechanism of the spinning machine according to claim 1, characterized in that: The universal joint mechanism includes an articulated block seat, an articulated block, an articulated block short axis, and an articulated block long axis. The articulated block seat is fixed on the upper pin cover plate, the articulated block long axis is fixed in the cover plate support, and the upper hole of the articulated block is sleeved on the articulated block long axis; the articulated block short axis is fixed on the articulated block seat, and the lower hole of the articulated block is sleeved on the articulated block short axis; the hole on the articulated block that matches the articulated block short axis and the articulated block long axis is larger than the axial diameter of the articulated block short axis and the articulated block long axis, and the upper hole and the lower hole on the articulated block are rounded or chamfered.

3. The yarn conveying mechanism of the spinning machine according to claim 1, characterized in that: The universal joint mechanism includes a cross hinge block and a hinge block seat. The hinge block seat is fixed on the upper pin cover plate. The cross hinge block is provided with an upper pin hole and a lower pin hole which are perpendicular to each other. The long axis is rotatably connected to the upper pin hole and its two ends are fixed to the cover plate support. The short axis is rotatably connected to the lower pin hole and its two ends are fixed to the hinge block seat. Since the long axis and the short axis are cross-intersected, they can both rotate with the hinge block.

4. The yarn conveying mechanism of the spinning machine according to claim 1, characterized in that: The universal joint mechanism comprises a spherical hole on the hinge block seat, the hinge block, and a spherical hole of the cover plate support. Balls are respectively arranged at two ends of the hinge block, and the balls are inserted into the spherical holes.

5. The yarn conveying mechanism of the spinning machine according to claim 2, 3 or 4, characterized in that: The hinge block is made of elastic material.

6. The yarn conveying mechanism of the spinning machine according to claim 1, 2, 3 or 4, characterized in that: A spacing block is also provided, and the spacing block is fixed on two side edges of the upper pin cover plate.

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