Fixing structure for warp beam and pan head of warp knitting machine

Abstract

The utility model discloses a fixing structure for a warp beam and a pan head of a warp knitting machine. The warp beam is sleeved with a plurality of expansion rings at intervals. The two ends of the warp beam are each provided with a locking mechanism, each locking mechanism comprises a locking ring, a first bolt and a belleville spring assembly, the locking rings are arranged on the warp beam in a hooping mode, each locking ring is provided with at least two first sinking grooves and at least two second sinking grooves, and the first sinking grooves and the second sinking grooves are communicated through through holes; a belleville spring assembly is embedded in the first sinking groove, a rod body of a limiting rod penetrates through the center of the belleville spring assembly, the through hole and the second sinking groove, the belleville spring assembly abuts against the groove bottom and the top face of the first sinking groove, and a limiting element is fixed to the side face of the end, away from the top face, of the rod body of the limiting rod. The first bolt is in threaded connection with the limiting rod; the expansion ring on the outermost side of the warp beam is sleeved with a gasket, and the first bolt abuts against the gasket. The yarn feeding device is simple in mounting structure, convenient to operate and wide in application range, and stable yarn feeding of the pan head is guaranteed.

Description

Technical Field

[0001] The utility model relates to a warp knitting machine, in particular to a fixing structure for a warp beam and a bobbin of a warp knitting machine. Background Technique

[0002] When the warp beam is inserted into the bobbin, a certain gap is required between the warp beam and the bobbin to be inserted easily and quickly. If the gap is too small, the weights of the bobbin and the warp beam are very heavy, making it difficult to insert the bobbin, with high labor intensity and low efficiency. If the gap between the bobbin and the warp beam is too large, the warp beam cannot be centered when inserted into the bobbin, and the concentricity between the bobbin and the warp beam cannot be guaranteed. During the process of rotating and feeding the yarn, the yarn is loose and tight, resulting in a stripe phenomenon on the fabric surface.

[0003] The utility model patent with Chinese patent number 202322786691.X discloses a mechanical expanding shaft device for a warp knitting machine. By adding a tightening unit to the warp beam, the adjusting mechanism rotates the square shaft to drive the screw rod to rotate, driving the main sleeve and the secondary sleeve to act synchronously, realizing the tightening and loosening of the bobbin. After the bobbin is tightened and fixed, the bobbin, the tightening unit, and the warp beam are located on the same axis to ensure their concentricity. However, this device needs to slot the warp beam, reducing the rigidity of the warp beam. As the bobbin continues to increase in size and the number of bobbins increases, higher requirements for the rigidity of the warp beam are needed. Therefore, it is only applicable to narrow-width spandex machines and not suitable for wide-width machines and large bobbins. Moreover, this device has a complex structure, is difficult to maintain, and has a high manufacturing cost.

[0004] In view of this, it is necessary to design a fixing structure suitable for large bobbins. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fixing structure for a warp beam and a bobbin of a warp knitting machine.

[0006] The technical solution for achieving the object of the present utility model is: a fixing structure for a warp beam and a bobbin of a warp knitting machine. Several of the bobbins are sequentially sleeved on the warp beam. A central hole for the warp beam to pass through is opened in the center of the bobbin. Inner hole chamfers are respectively arranged on two end faces of the central hole. Warp beam chamfers are provided at the shaft ends of the warp beam. Several annular expansion rings are spacedly sleeved on the warp beam. The expansion rings are non-closed annular bodies with notches. Expansion ring chamfers are arranged on both sides of the expansion rings. The chamfer angles of the expansion ring chamfers are the same as those of the inner hole chamfers and the warp beam chamfers. Each of the expansion rings is embedded in the inner hole chamfers of each of the bobbins; Locking mechanisms are respectively installed at both ends of the warp beam. The locking mechanisms include locking rings, first bolts and disc spring assemblies. The locking rings are hoop-shaped on the warp beam. At least two first sunk grooves are opened on the side surface of the locking ring opposite to the bobbin. At least two second sunk grooves are opened on the side surface of the locking ring away from the bobbin. Each of the second sunk grooves is located behind one of the first sunk grooves. Through holes communicating the first sunk grooves and the second sunk grooves are opened between the first sunk grooves and the second sunk grooves; The disc spring assemblies are embedded in the first sunk grooves. A limiting rod passes through the center of the disc spring assemblies. The limiting rod includes a top surface and a rod body extending outward from the center of the top surface. The rod body penetrates through the center of the disc spring assemblies, the through holes and the second sunk grooves. The disc spring assemblies are respectively in contact with the bottom of the first sunk grooves and the top surface. A limiting element for preventing the rod body from slipping out of the second sunk groove is fixed on the side surface of the end of the rod body away from the top surface; A threaded hole is opened in the center of the top surface towards the rod body. The first bolt is threadedly connected with the limiting rod; A gasket is tightly sleeved on the outermost expansion ring of the warp beam. The gasket is in contact with the bobbin. The bolt head of the first bolt is in contact with the gasket.

[0007] Further, the limiting element is a rivet riveted to the rod body.

[0008] Further, the first bolt and the limiting rod are of an integrally formed structure.

[0009] Further, three first sunk grooves are opened on the side surface of the locking ring opposite to the bobbin. The three first sunk grooves are distributed in an equilateral triangle on the locking ring.

[0010] Further, the locking ring is a non-closed annular body with an open part. The two end faces of the open part are connected by a second bolt.

[0011] The fixing structure for the warp beam and the bobbin of the warp knitting machine realized by the present utility model is simple. The processing cost of the locking mechanism is low. It is convenient to operate. It has a wide application range. The expansion ring ensures the concentricity of the warp beam and the bobbin and ensures stable yarn feeding of the bobbin. Brief Description of the Drawings

[0012] Figure 1 Partial sectional structure schematic diagram of the fixing structure of the warp beam and the beam head of the warp knitting machine according to the embodiment of the present utility model;

[0013] Figure 2 is Figure 1 Enlarged structure schematic diagram of part A in;

[0014] Figure 3 Structure schematic diagram of the expansion ring according to the embodiment of the present utility model;

[0015] Figure 4 Front view structure schematic diagram of the locking mechanism according to the embodiment of the present utility model;

[0016] Figure 5 Left view partial sectional structure schematic diagram of the locking mechanism according to the embodiment of the present utility model;

[0017] Figure 6 is Figure 5 Structure schematic diagram of part B in without the disc spring, the first bolt and the limiting element. Detailed Description of the Preferred Embodiment

[0018] The following will describe in detail the preferred embodiments of the present utility model with reference to the accompanying drawings.

[0019] As Figures 1 to 3 shown, a fixing structure of a warp beam 10 and a beam head 20 of a warp knitting machine, several of the beam heads 10 are sequentially sleeved on the warp beam 10, a central hole for the warp beam 10 to pass through is opened in the center of the beam head 20, inner hole chamfers 201 are respectively arranged at both end faces of the central hole, a warp beam chamfer 101 is arranged at the shaft end of the warp beam 10, several circular expansion rings 1 are spacedly sleeved on the warp beam 10, the expansion ring 1 is a non-closed ring body with a notch 11, expansion ring chamfers 12 are arranged on both sides of the expansion ring 1, the chamfer angles of the expansion ring chamfers 12 are the same as those of the inner hole chamfers 201, and each of the expansion rings 1 is respectively embedded in the inner hole chamfers 201 of each of the beam heads 20; locking mechanisms 2 are respectively installed at both ends of the warp beam 10.

[0020] As Figures 4 to 6As shown in the figure, the locking mechanism 2 includes a locking ring 21, a first bolt 22, and a disc spring assembly 23. The locking ring 21 is hoop-mounted on the warp beam 10. The locking ring 21 is a non-closed ring body with an open portion 211. The two end faces of the open portion 211 are connected by a second bolt 24. On the side face 212 of the locking ring 21 opposite to the disc head 20, three first sunk grooves 213 are provided. The three first sunk grooves 213 are distributed in an equilateral triangle on the locking ring 21. On the side face 214 of the locking ring 21 facing away from the disc head, at least two second sunk grooves 215 are provided. Each second sunk groove 215 is respectively located on the back of one of the first sunk grooves 213. A through hole 216 communicating with the first sunk groove 213 and the second sunk groove 215 is provided between the first sunk groove 213 and the second sunk groove 215. The disc spring assembly 22 is embedded in the first sunk groove 213. A limiting rod 25 passes through the center of the disc spring assembly 23. The limiting rod 25 includes a top surface 251 and a rod body 252 extending outward from the center of the top surface 251. The rod body 252 passes through the center of the disc spring assembly 23, the through hole 216, and the second sunk groove 215. The disc spring assembly 23 abuts against the bottom 2131 of the first sunk groove 213 and the top surface 251 respectively. A rivet 26 for preventing the rod body 252 from disengaging from the second sunk groove 215 toward the first sunk groove 213 is riveted on the side of the end 2521 of the rod body 252 facing away from the top surface 251. A threaded hole is provided in the center of the top surface 251 extending toward the rod body 252. The first bolt 22 is threadedly connected to the limiting rod 25. A gasket 3 is sleeved on the outermost expansion ring 1 of the warp beam 10. The gasket 3 abuts against the disc head 20. The bolt head 221 of the first bolt 22 abuts against the gasket 3.

[0021] In order to ensure that the warp beam can be easily inserted into the disc head and the concentricity between the two can be guaranteed, the present invention adds an expansion ring between the disc heads. When the expansion ring is sleeved on the warp beam, due to the contraction effect of the expansion ring, the expansion ring tightly sleeves on the warp beam. The expansion ring is installed at the chamfered portion of the inner hole of the disc head. The angles on both sides of the expansion ring are the same as the angle of the inner hole chamfer. The inner hole chamfer of the disc head is the same as the end chamfer of the warp beam. In this way, the concentricity between the disc head and the warp beam is the same, and the stability of the yarn feeding process of the disc head can be guaranteed.

[0022] Three first bolts are provided on the locking ring. The first bolts are evenly adjusted so that the three first bolts are evenly stressed until locking. When the first bolts are locked, the disc spring sheet assembly provides a certain pre-tightening force to the set bolts to ensure that the set bolts are not easily loosened.

[0023] The number of the first sunk grooves in the present invention is not limited to that shown in the embodiment. The structure in which the three first sunk grooves are distributed in an equilateral triangle has the most uniform stress.

[0024] The structure of the limiting element described in the present utility model is not limited, as long as it can prevent the rod body from slipping out of the second sinking groove towards the first sinking groove side.

[0025] The structure of the locking ring described in the present utility model is not limited to that shown in the embodiment, and it can also be in the form of a hoop composed of an upper semi-ring housing and a lower semi-ring housing.

[0026] The first bolt and the limiting rod described in the present utility model can be a combined component or an integrally formed structure.

[0027] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent process transformation made by using the content of the specification of the present utility model, directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A fixing structure of a warp beam and a warp head of a warp knitting machine, wherein a plurality of warp heads are sequentially sleeved on the warp beam, a center hole for the warp beam to pass through is opened in the center of the warp head, two end surfaces of the center hole are respectively provided with inner hole chamfers, and the shaft end of the warp beam is provided with a warp beam chamfer, characterized in that: The cam is provided with a plurality of annular expansion rings at intervals on the warp shaft, and the expansion ring is a non-closed annular body with a notch, and expansion ring chamfers are provided on both sides of the expansion ring, and the expansion ring chamfers have the same chamfer angle as the chamfers of the inner hole and the warp shaft, and each of the expansion rings is embedded in the chamfer of the inner hole of each of the disc heads; a locking mechanism is respectively installed at both ends of the warp shaft, and the locking mechanism includes a locking ring, a first bolt and a disc spring assembly, and the locking ring hoop is arranged on the warp shaft, and at least two first grooves are provided on the side of the locking ring opposite to the disc head, and at least two second grooves are provided on the side of the locking ring away from the disc head, and each of the second grooves is respectively located on the back side of one of the first grooves, and a through-hole is provided between the first groove and the second groove. The first groove and the through hole of the second groove; the disc spring assembly is embedded in the first groove, and a limit rod passes through the center of the disc spring assembly, the limit rod includes a top surface and a rod body extending outward from the center of the top surface, the rod body passes through the center of the disc spring assembly, the through hole and the second groove, the disc spring assembly is respectively abutted against the groove bottom and the top surface of the first groove, and the side surface of the rod body at one end away from the top surface is fixed with a limit element to prevent the rod body from escaping from the second groove; a threaded hole is opened from the center of the top surface to the rod body, and the first bolt is threadedly connected to the limit rod; a gasket is tightly fitted on the expansion ring located at the outermost side of the warp axis, the gasket abuts against the pan head, and the bolt head of the first bolt abuts against the gasket.

2. The fixing structure of the warp beam and the warp head of a warp knitting machine according to claim 1, characterized in that: The limiting element is a rivet riveted to the rod body.

3. The fixing structure of the warp beam and the warp head of a warp knitting machine according to claim 1, characterized in that: Three first recessed grooves are formed on the side surface of the locking ring opposite to the pan head, and the three first recessed grooves are distributed in an equilateral triangle on the locking ring.

4. The fixing structure of the warp beam and the warp head of a warp knitting machine according to claim 1, characterized in that: The locking ring is a non-closed annular body with an open portion, and two end surfaces of the open portion are connected by a second bolt.

5. The fixing structure of the warp beam and the warp head of a warp knitting machine according to claim 1, characterized in that: The first bolt and the limiting rod are an integrally formed structure.

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