An upper pin assembly capable of deriving static electricity from the main drafting area

Abstract

An upper pin assembly capable of exporting static electricity in a main drafting zone comprises an upper pin, a spring card, a middle upper roller and an upper leather ring, wherein the middle upper roller is mounted on the upper pin via a mandrel, and the upper leather ring is mounted on the middle upper roller held tight by the upper pin, and further comprises a conductive sheet, wherein the conductive sheet is provided with an exporting portion and a contacting portion, wherein the contacting portions are symmetrically arranged, the contacting portions are in contact with both sides of the upper pin, and the exporting portion is in contact with the spring card or the mandrel; the conductive sheet is a metal sheet, and the thickness of the conductive sheet is 0.05-3 mm. The present invention transmits the static electricity accumulated in the main drafting zone to the main machine through the conductive sheet, thereby avoiding the phenomenon that the yarn hairiness increases and the strength decreases due to the interaction between the static electricity in the main drafting zone and the static electricity on the drafting strands, resulting in the unstable or even deteriorated yarn quality, and effectively improving and stabilizing the yarn quality. In addition, the present invention also has the characteristics of low cost, significant effect, simple and convenient installation, and easy replacement.

Description

Technical Field

[0001] The invention relates to a textile component, in particular to an upper pin assembly capable of conducting static electricity in a main drafting zone, and belongs to the technical field of textiles. Background Art

[0002] The general drafting device of the spinning frame is composed of the front upper roller, the front lower roller, the middle upper roller, the upper pin, the lower pin, the upper apron, the lower apron, the middle lower roller, the rear upper roller, and the rear lower roller, forming a three-up and three-down three-roller drafting structure. The core technology of the three-roller drafting structure is the double rubber ring elastic jaws in the main drafting area, that is, the elastic jaws composed of the upper pin assembly (the upper middle roller is covered with an upper apron supported by the upper pin) and the lower pin assembly (the middle lower roller is covered with a lower pin and the lower apron supported by the rubber ring tension frame). The upper and lower aprons are combined to form a flexible holding channel for the strands, and the fiber is stretched and drafted by the three rows of upper and lower rollers that gradually increase their speed from back to front. At present, non-metallic upper pins have been vigorously promoted and widely used due to their advantages of good molding consistency, not easy to deform, and good yarn quality. However, since the upper and lower leather rings are made of rubber, after the non-metallic upper pin is used, the spinning process relies on friction transmission, and static electricity will be generated accordingly. Non-metallic materials such as rubber are not easy to conduct electricity, resulting in a large amount of static electricity accumulation in the main drafting area, which cannot be discharged; at the same time, the humidity in the spinning workshop is relatively high, and the fiber whiskers are affected by static electricity during the drafting process, which increases the hairiness of the yarn and reduces the strength, resulting in unstable or even deteriorating yarn quality. Summary of the invention

[0003] The purpose of the present invention is to address the shortcomings of the prior art and provide an upper pin assembly that can effectively eliminate the static electricity in the main drafting zone and can extract static electricity from the main drafting zone.

[0004] The problem described in the present invention is achieved by the following technical solution:

[0005] An upper pin assembly capable of extracting static electricity from a main drafting zone comprises an upper pin, a spring card, a middle upper roller and an upper apron, wherein the middle upper roller is mounted on the upper pin via a core shaft, and the upper apron is sleeved on the middle upper roller tightened by the upper pin. The upper pin assembly also comprises a conductive sheet, wherein the conductive sheet is provided with an extracting portion and a contact portion, wherein the contact portions are symmetrically arranged, wherein the contact portions are in contact with two sides of the upper pin, and the extracting portion is in contact with the spring card or the core shaft; the conductive sheet is a metal sheet, and the thickness of the conductive sheet is 0.05-3 mm.

[0006] The above-mentioned upper pin assembly that can export static electricity in the main drawing area has a guide portion located at the rear of the conductive sheet, and the contact portion of the conductive sheet is partially bonded to the upper pin or embedded in the upper pin as an embedded part. The guide portion of the conductive sheet is bent and fixed after passing through the spring card slot, and the spring card is clamped on the upper part of the guide portion and fits tightly with the guide portion.

[0007] The above-mentioned upper pin assembly can derive static electricity from the main stretching area, and the contact part of the conductive sheet matches and fits with the two sides of the upper pin, the end of the contact part extends and bends to wrap the front part of the upper pin, and the upper leather ring is wrapped around the outside of the contact part and fits tightly with the contact part.

[0008] The above-mentioned upper pin assembly that can export static electricity in the main drafting area has a symmetrically arranged export portion of the conductive sheet, which is bent into a "П" shape, and the top of the "П" shape is a contact arc surface, which matches and fits with the core shaft of the middle and upper roller.

[0009] The upper pin assembly that can derive static electricity from the main drafting area has two bar magnets symmetrically arranged on both sides of the upper pin. Each bar magnet is pressed against the upper part of the two contact parts respectively, and the bar magnet is fixed to the upper pin by screws or bonding.

[0010] The present invention aims to solve the problem that static electricity accumulation in the main drafting area affects the quality of the yarn, and designs an upper pin assembly that can derive static electricity in the main drafting area. The upper pin assembly is additionally provided with a metal conductive sheet, and the static electricity accumulated in the main drafting area is conducted to the main machine through the conductive sheet, thereby avoiding the phenomenon that the yarn hairiness increases and the strength decreases due to the interaction between the static electricity in the main drafting area and the static electricity on the drafting strands, resulting in unstable or even deteriorated yarn quality, and effectively improving and stabilizing the yarn quality. In addition, the present invention also has the characteristics of low cost, significant effect, simple and convenient installation, and easy replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] Figure 1 is a schematic structural diagram of a first embodiment of the present invention;

[0013] Figure 2 Schematic diagram of the installation of the upper pin, the conductive sheet and the spring card in the first embodiment of the present invention;

[0014] Figure 3 It is a schematic diagram of the installation of the pins and the conductive sheet in the first embodiment of the present invention;

[0015] Figure 4 is a side view of a conductive sheet according to a first embodiment of the present invention;

[0016] Figure 5 It is a schematic diagram of the structure of the pins and the conductive sheet in the second embodiment of the present invention;

[0017] Figure 6 is a schematic diagram of a conductive sheet cutout according to a second embodiment of the present invention;

[0018] Figure 7 is a schematic diagram of the installation state of the conductive sheet according to the second embodiment of the present invention;

[0019] Figure 8 is a schematic structural diagram of a third embodiment of the present invention;

[0020] Fig. 9 is a schematic structural diagram of a fourth embodiment of the present invention;

[0021] Fig.10 is a perspective view of a conductive sheet according to a fourth embodiment of the present invention;

[0022] Fig.11 Schematic diagram of the installation of the pins and the conductive sheet in the fourth embodiment of the present invention;

[0023] Fig.12 A schematic structural diagram of a conductive sheet according to a fifth embodiment of the present invention;

[0024] Fig.13 yes Fig.12 Left view of

[0025] Fig.14 is a schematic diagram of the installation of a conductive sheet according to a fifth embodiment of the present invention;

[0026] Fig.15 2 is a schematic diagram of a conductive sheet cutout according to a sixth embodiment of the present invention;

[0027] Fig.16 It is a schematic diagram of a conductive sheet after being bent according to the sixth embodiment of the present invention.

[0028] The numbers in the figure are: 1. upper pin, 2. middle upper roller, 3. upper leather ring, 4. spring card, 5. conductive sheet, 5-1. contact part, 5-2. lead-out part, 5-3. contact arc surface, 5-4. end contact surface, 6. bar magnet, 7. core shaft. DETAILED DESCRIPTION

[0029] See also Figure 1 , Figure 3 The upper pin assembly of the present invention includes an upper pin 1, a spring card 4, a middle upper roller 2 and an upper leather ring 3. The middle upper roller is installed on the upper pin through a core shaft, and the upper leather ring is mounted on the middle upper roller supported by the upper pin. In order to solve the problem of static electricity accumulation affecting the yarn quality, the present invention provides a conductive sheet 5. The conductive sheet is provided with a lead-out portion 5-2 and a contact portion 5-1. The contact portions are symmetrically arranged. The contact portions are in close contact with the wings on both sides of the upper pin, and the lead-out portions are in close contact with the spring card or the core shaft of the middle upper roller. The contact portion conducts the static electricity accumulated in the main drafting area to the main machine through the lead-out portion. The conductive sheet is a metal sheet, and the thickness of the conductive sheet is 0.05-3 mm.

[0030] See also Figure 1-Figure 4This is the first embodiment of the present invention. As can be seen from the figure, the lead-out portion 5-2 is located at the rear of the conductive sheet, and the lead-out portion of the conductive sheet is bent and fixed after passing through the spring card slot of the upper pin, and the spring card 4 is clamped on the upper part of the lead-out portion and fits tightly with the lead-out portion. For the modified upper pin assembly, the contact portion of the conductive sheet can be partially bonded to the upper pin; for the newly produced upper pin assembly, the conductive sheet can be pre-buried in the upper pin. (The front, back, top and bottom are directions indicated in the figure).

[0031] Figure 5-Figure 7 This is the second embodiment of the present invention. Figure 6 The conductive sheet is shown as a schematic diagram after punching. When the conductive sheet of this embodiment is installed, its lead-out portion passes through the spring card slot and is bent and fixed, and the contact portions 5-1 on both sides of the conductive sheet are bent to cover the convex ridges on both sides of the upper pin, so that the conductive sheet can be fixed without bonding.

[0032] The first and second embodiments are characterized by simple structure and easy assembly and disassembly.

[0033] Figure 8 This is the third embodiment of the present invention. In this embodiment, bar magnets 6 are installed on both sides of the upper pin. After the bar magnets are installed, the control of the whisker fibers can be enhanced by the suction force generated by the magnets on the lower pin. The installation of the conductive sheet lead-out part of this embodiment is the same as the first and second embodiments. The conductive sheet contact part 5-2 is attached to both sides of the upper pin, and each bar magnet is pressed on the upper part of the two contact parts. The bar magnets are fixed to the upper pin by screws or bonding, so that the conductive sheet can be reliably fixed. This embodiment can not only increase the control of the whisker, but also eliminate the influence of static electricity, and has a more obvious effect on improving the quality of the yarn.

[0034] Figure 9-11 This is the fourth embodiment of the present invention. The characteristic of this embodiment is that the contact part of the conductive sheet matches and fits with both sides of the upper pin, the end of the contact part 5-1 extends and bends to match and cover the front part of the upper pin, and the upper leather ring is wrapped around the outside of the contact part and fits tightly with the contact part. The characteristic of this embodiment is that the contact part contacts both the upper pin and the upper leather ring, and the static electricity of the upper pin and the upper leather ring can be simultaneously guided out, so the effect of eliminating the influence of static electricity is the best.

[0035] Figure 12-14 This is the fifth embodiment of the present invention. The characteristic of this embodiment is that the lead-out part 5-2 of the conductive sheet is symmetrically arranged, the lead-out part is bent backward into a "П" shape, the top of the "П" shape is a contact arc surface 5-3, the contact arc surface is matched and fitted with the mandrel 7 of the middle top roller, and static electricity is led out from the mandrel. This embodiment increases the contact area of ​​the lead-out part and improves the reliability of conductivity.

[0036] Fig.15 , Fig.16The sixth embodiment of the present invention is an improvement on the fifth embodiment. The conductive sheet of the sixth embodiment is in an unbent state. Fig.15 As shown, during installation, the conductive sheet is bent along the dotted line to form a contact end face 5-4 that contacts the end face of the mandrel, and the upper edge of the contact end face is an arc-shaped edge that matches the cylindrical surface of the mandrel. The sixth embodiment is relatively easy to install and assemble the conductive sheet while maintaining the characteristics of the fifth embodiment.

[0037] It should be noted that the above embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the above embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The improvement of the present invention has been shown in field trials to conduct the static electricity accumulated in the main drawing zone to the main machine through the provision of a conductive sheet, thereby avoiding the increase in yarn hairiness and reduction in strength caused by the interaction between the static electricity accumulated in the main drawing zone and the static electricity on the drawing strands, leading to unstable or even deteriorating yarn quality.

Claims

1. An upper pin assembly capable of deriving static electricity from a main drafting zone, comprising an upper pin, a spring card, a middle upper roller and an upper apron, wherein the middle upper roller is mounted on the upper pin via a mandrel, and the upper apron is sleeved on the middle upper roller held tight by the upper pin, characterized in that: It also includes a conductive sheet, which is provided with a lead-out portion and a contact portion, the contact portions are symmetrically arranged, the contact portions are in contact with both sides of the upper pin, and the lead-out portion is in contact with a spring card or a core shaft; the conductive sheet is a metal sheet, and the thickness of the conductive sheet is 0.05-3 mm; The lead-out part is located at the rear of the conductive sheet, the contact part of the conductive sheet is partially bonded to the upper pin or embedded in the upper pin as an embedded part, the lead-out part of the conductive sheet is bent and fixed after passing through the spring card slot, and the spring card is clamped on the upper part of the lead-out part and fits tightly with the lead-out part; Two bar magnets are symmetrically arranged on both sides of the upper pin, and each bar magnet is pressed on the upper part of the two contact parts respectively, and the bar magnet is fixed to the upper pin by screws or bonding.

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