A warp yarn cutting device for a sizing machine

Abstract

This utility model provides a warp yarn cutting device for a sizing machine, relating to the technical field of sizing machines. The warp yarn cutting device includes a base with pre-drilled holes at both ends. A support frame is fixed to the upper end of the base, and a cylinder is fixed to the upper end of the support frame. A sliding frame is fixed to the driving end of the cylinder. A cutting blade is detachably mounted on the middle of the sliding frame via bolts. Sliding grooves are formed at each of the four corners of the sliding frame, and a sliding block is slidably connected to the inner wall of each groove. A spring is fixed to the upper end of each sliding block, and a pressing frame is fixed to the lower end of every two adjacent sliding blocks. This warp yarn cutting device for a sizing machine achieves stable pressing by driving the sliding frame with a cylinder, thus improving the stability of the cutting device and automatically tightening the warp yarn, thereby improving its performance.

Description

Technical Field

[0001] This utility model relates to a warp cutting device for a sizing machine, belonging to the technical field of sizing machines. Background Technology

[0002] Warp yarns are the threads that extend along the length of the loom, forming a thread along the length of the fabric after weaving. To meet weaving requirements, the twist of warp yarns is usually tighter than that of filler yarns; however, because of the contact and friction between warp yarns, breakage is prone to occur. Therefore, a sizing machine is used to apply sizing to the outside of the warp yarns to improve key quality indicators such as strength and abrasion resistance. In the batch changeover and warp beam removal process of traditional Tsudakoma sizing machines, there is a core step: the shearing device equipped on the equipment is used to cut the warp yarns wound on the warp beam, preparing for the subsequent replacement of the new warp beam and the start of the next batch of production.

[0003] Although the currently used warp shearing devices can meet the basic daily shearing needs, two key problems have been exposed in the long-term operation of actual production scenarios, which directly restrict the stability and operation quality of the devices. The specific shortcomings can be analyzed from the following two aspects: On the one hand, the lack of a warp yarn limiting structure leads to insufficient shearing stability. Existing devices lack precise and reliable limiting and guiding mechanisms for the warp yarns, resulting in a lack of continuous positional constraint before the warp yarns enter the shearing zone. When the device is operating at high speed, or when the warp yarns experience slight tension fluctuations due to material properties such as elasticity and surface smoothness, lateral deviation or longitudinal movement is highly likely. This positional deviation directly causes misalignment between the shearing blade and the preset cutting trajectory of the warp yarn, potentially leading not only to single-cut dimensional deviations but also to a chain reaction of problems such as warp yarn jamming and localized blade wear. This prevents the device from maintaining a stable continuous operating state, thus resulting in insufficient stability of the shearing device. On the other hand, during the final cutting stage, wrinkles generated during the fabric conveying process can severely affect the warp cutting quality. When the warp yarns are conveyed from the unwinding mechanism to the shearing mechanism along with the fabric, existing devices, lacking effective flattening or tension control components, are prone to two types of wrinkling problems: if the conveying speed and unwinding speed are not properly matched, the warp yarns may become loose and stacked, resulting in irregular wrinkles; if the contact method between the warp yarns and the guide components in the conveying path is unreasonable, uneven friction can also cause local wrinkling. These wrinkles will cause the warp yarns to exhibit a localized state of "uneven thickness" at the moment of cutting. The overlapping parts of the warp yarns at the wrinkled areas may be cut by multiple cuts or incompletely, while the flat areas may have rough edges due to concentrated stress. Ultimately, this results in poor consistency of warp yarn length and substandard cross-sectional quality after cutting, significantly weakening the actual performance of the shearing device and thus making the shearing device less effective. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a warp cutting device for a sizing machine, which overcomes the shortcomings of the prior art and effectively solves the problems of insufficient stability and poor performance of the cutting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A warp yarn cutting device for a sizing machine includes a base with pre-drilled holes at both ends. A support frame is fixed to the upper end of the base, and a cylinder is fixed to the upper end of the support frame. A sliding frame is fixed to the driving end of the cylinder. A cutting blade is detachably mounted on the middle of the sliding frame via bolts. Sliding grooves are provided at the four corners of the sliding frame. A sliding block is slidably connected to the inner wall of each sliding groove. A spring is fixed to the upper end of each sliding block. A pressing frame is fixed to the lower end of every two sliding blocks. Both pressing frames have rotating grooves on their adjacent sides, and the inner walls of the two rotating grooves are provided with connecting structures. Two rubber rollers are provided on the connecting structures. The connecting structures can move the two rubber rollers in opposite directions along the length of the base to create lateral stretching of the warp yarn and fabric connection section.

[0006] Preferably, the connecting structure includes two rotating frames, each with a torsion spring fixed to its opposite side, a connecting frame fixed to its proximal end, a fixing rod fixed to the other end of each connecting frame, and a rubber roller fixed to the middle of each fixing rod.

[0007] Preferably, the outer surfaces of the two rotating frames are rotatably connected to the inner walls of the two rotating slots, the two rotating frames are arranged opposite each other, the vertical cross-section of each rotating frame is cross-shaped, the near ends of the two torsion springs are fixed to the opposite sides of the two rotating frames, and the far ends of the two torsion springs are fixed to the inner walls of the far ends of the two rotating slots.

[0008] Preferably, the two connecting frames are fixed at their proximal ends to the proximal ends of the two rotating frames, the two connecting frames are fixed at their disjoint ends to the disjoint ends of the two fixed rods, the middle parts of the two fixed rods are fixed to the middle of the two rubber rollers, and the two rubber rollers are in contact with the upper surface of the base.

[0009] Preferably, the outer surfaces of the four sliding blocks are slidably connected to the inner walls of the four sliding grooves, the vertical cross-sections of the four sliding blocks are all T-shaped, the lower ends of the four sliding blocks are fixed to the two ends of the two pressing frames, and the two pressing frames are arranged opposite to each other.

[0010] Preferably, the upper ends of the four springs are fixed to the inner walls of the upper ends of the four slide grooves, the lower ends of the four springs are fixed to the upper ends of the four sliding blocks, the four slide grooves pass through the four corners of the lower end of the sliding frame, the outer surface of the sliding frame is slidably connected to the inner wall of the support frame, and the cross-section of the sliding frame is I-shaped.

[0011] Preferably, the two reserved holes extend through both ends of the base, the two ends of the support frame are fixed to the upper end of the base, and the vertical cross-section of the support frame is U-shaped.

[0012] The beneficial effects of this utility model are as follows: 1. The warp cutting device of this sizing machine is driven by a cylinder to move the sliding frame, so that the sliding frame, cutting blade, slide groove, sliding block, spring and pressing frame work together to achieve a stable pressing effect, effectively avoid the warp yarn position shift during cutting, and thus improve the stability of the cutting device. 2. The warp cutting device of this sizing machine is driven by a cylinder to move the sliding frame, so that the trough, rotating frame, torsion spring, connecting frame, fixed rod and rubber roller work together to achieve automatic tensioning effect, effectively eliminating the influence of wrinkles on the warp cutting quality, thereby improving the use effect of the warp. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This utility model Figure 2 Enlarged view of the A-section structure; Figure 4 This is a partial structural schematic diagram of the present invention.

[0014] In the diagram: 1. Base; 2. Reserved hole; 3. Support frame; 4. Cylinder; 5. Sliding frame; 6. Cutting blade; 7. Slide groove; 8. Sliding block; 9. Spring; 10. Pressing frame; 11. Rotating groove; 12. Rotating frame; 13. Torsion spring; 14. Connecting frame; 15. Fixing rod; 16. Rubber roller. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Example 1 This utility model provides a warp yarn cutting device for a sizing machine.

[0017] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4The system includes a base 1, with pre-drilled holes 2 at both ends. A support frame 3 is fixed to the upper end of the base 1, and a cylinder 4 is fixed to the upper end of the support frame 3. A sliding frame 5 is fixed to the driving end of the cylinder 4. A cutting blade 6 is detachably installed in the middle of the sliding frame 5 via bolts. Sliding grooves 7 are provided at the four corners of the sliding frame 5. A sliding block 8 is slidably connected to the inner wall of each sliding groove 7. A spring 9 is fixed to the upper end of each sliding block 8. A pressing frame 10 is fixed to the lower end of every two sliding blocks 8. The outer surfaces of the four sliding blocks 8 are slidably connected to the inner walls of the four sliding grooves 7. The vertical cross-section of the moving block 8 is T-shaped. The lower ends of the four sliding blocks 8 are fixed to the two ends of the two pressing frames 10. The two pressing frames 10 are arranged opposite each other. The upper ends of the four springs 9 are fixed to the upper inner wall of the four sliding grooves 7. The lower ends of the four springs 9 are fixed to the upper ends of the four sliding blocks 8. The four sliding grooves 7 pass through the four corners of the lower end of the sliding frame 5. The outer surface of the sliding frame 5 is slidably connected to the inner wall of the support frame 3. The cross-section of the sliding frame 5 is I-shaped. The two reserved holes 2 pass through the two ends of the base 1. The two ends of the support frame 3 are fixed to the upper end of the base 1. The vertical cross-section of the support frame 3 is U-shaped.

[0018] In use, this invention works as follows: A cylinder 4 drives a sliding frame 5 to move. Under the limiting action of the inner wall of the support frame 3, the sliding frame 5 moves smoothly along a preset trajectory. Simultaneously, a cutting blade 6, detachably mounted via bolts in its center, moves synchronously with the sliding frame 5. The cutting blade 6 moves downwards along with the sliding frame 5. At the same time, a sliding block 8, slidably connected to the inner wall of the four corner grooves 7 of the sliding frame 5, moves downwards synchronously with two pressing frames 10 connected to its lower end, supported by a fixed spring 9 at its upper end. The descending pressing frame 10 contacts the warp and fabric connecting section conveyed to this area before the cutting blade 6. Supported by the base 1, the two pressing frames 10 remain stationary after contact. As the sliding frame 5 continues to descend, the spring 9 between it and the pressing frame 10 is gradually compressed, providing space for the sliding frame 5 to continue descending. When the sliding frame 5 reaches its preset stroke, the cutting blade 6, bolted at its bottom, precisely acts on the warp, completing the cutting operation. Throughout the process, the pressing frame 10 maintains stable pressure on the connection section between the warp yarn and the fabric, achieving a stable pressing effect and effectively preventing the warp yarn from shifting position during cutting, thereby improving the stability of the shearing device.

[0019] Example 2 Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 An automatic tensioning function has been added based on Embodiment 1; Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4It is worth noting that both pressing frames 10 have rotating grooves 11 on their adjacent sides. The inner walls of the two rotating grooves 11 are provided with a connecting structure, which includes two rotating frames 12. Torsion springs 13 are fixed to the opposite sides of each rotating frame 12. Connecting frames 14 are fixed to the adjacent ends of each rotating frame 12. Fixing rods 15 are fixed to the other ends of each connecting frame 14. Rubber rollers 16 are fixed to the middle of each fixing rod 15. The outer surfaces of the two rotating frames 12 are rotatably connected to the inner walls of the two rotating grooves 11. The rotating frames 12 are arranged opposite each other, and the vertical cross-section of each rotating frame 12 is cross-shaped. The near ends of the two torsion springs 13 are fixed to the opposite sides of the two rotating frames 12, and the opposite ends of the two torsion springs 13 are fixed to the inner walls of the opposite ends of the two rotating grooves 11. The near ends of the two connecting frames 14 are fixed to the near ends of the two rotating frames 12, and the opposite ends of the two connecting frames 14 are fixed to the opposite ends of the two fixing rods 15. The middle part of the two fixing rods 15 is fixed to the middle part of the two rubber rollers 16, and the two rubber rollers 16 are in contact with the upper surface of the base 1.

[0020] In use, this invention works as follows: A cylinder 4 drives a sliding frame 5 to move. Sliding blocks 8, which slide in conjunction with the four corner grooves 7 of the sliding frame 5, are supported by four springs 9, which simultaneously drive two pressing frames 10 downwards. During the downward movement of the pressing frame 10, it first drives the rubber rollers 16 to contact both sides of the warp and fabric connecting section via the connected rotating frame 12, connecting frame 14, and fixing rod 15. As the pressing frame 10 continues to move downwards, the two rubber rollers 16 gradually separate in opposite directions. During this process, the rubber rollers 16 drive the connecting frame 14 to unfold via the fixing rod 15, while the two connecting frames 14 simultaneously pull the rotating frames 12 fixed at their respective near ends. Under the limiting and guiding action of the rotating groove 11, the rotating frame 12 stretches the torsion spring 13. The elastic reaction force generated by the torsion spring 13 due to its torsional deformation will act in the opposite direction on the rubber roller 16, ensuring that the rubber roller 16 can tightly press the warp yarn and the fabric. At the same time, the movement of the two rubber rollers 16 away from each other will form a lateral tensile force on the connection section between the warp yarn and the fabric, thereby achieving an automatic tensioning effect, effectively eliminating the interference of wrinkles on the subsequent warp yarn cutting quality, and thus improving the performance of the warp yarn.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A warp yarn cutting device for a sizing machine, comprising a base (1), characterized in that: The base (1) has reserved holes (2) at both ends. A support frame (3) is fixed at the upper end of the base (1). A cylinder (4) is fixed at the upper end of the support frame (3). A sliding frame (5) is fixed at the driving end of the cylinder (4). A cutting blade (6) is detachably installed in the middle of the sliding frame (5) by bolts. Slide grooves (7) are opened at the four corners of the sliding frame (5). A sliding block (8) is slidably connected to the inner wall of each slide groove (7). A spring (9) is fixed at the upper end of each sliding block (8). One of the pressing frames (10) is fixed at the lower end of every two sliding blocks (8). The two pressing frames (10) are provided with a rotating groove (11) on their adjacent sides. The inner walls of the two rotating grooves (11) are provided with a connecting structure, and two rubber rollers (16) are provided on the connecting structure. The connecting structure can move the two rubber rollers (16) in opposite directions along the length of the base (1) to stretch the warp yarn and the fabric connecting section laterally.

2. The warp yarn cutting device for a sizing machine according to claim 1, characterized in that: The connection structure includes two rotating frames (12), each of which is fixed with a torsion spring (13) on the opposite side, and a connecting frame (14) is fixed at the near end of each of the two rotating frames (12). Each of the two connecting frames (14) is fixed with a fixing rod (15) at the other end, and a rubber roller (16) is fixed in the middle of each of the two fixing rods (15).

3. The warp yarn cutting device for a sizing machine according to claim 2, characterized in that: The outer surfaces of the two rotating frames (12) are rotatably connected to the inner walls of the two rotating slots (11). The two rotating frames (12) are arranged opposite to each other. The vertical cross-section of each rotating frame (12) is arranged in a cross shape. The near ends of the two torsion springs (13) are fixed to the opposite sides of the two rotating frames (12), and the far ends of the two torsion springs (13) are fixed to the inner walls of the far ends of the two rotating slots (11).

4. The warp yarn cutting device for a sizing machine according to claim 2, characterized in that: The two connecting frames (14) are fixed at their near ends to the two rotating frames (12), and the two connecting frames (14) are fixed at their far ends to the two fixed rods (15). The middle of the two fixed rods (15) is fixed to the middle of the two rubber rollers (16), and the two rubber rollers (16) are in contact with the upper surface of the base (1).

5. The warp yarn cutting device for a sizing machine according to claim 1, characterized in that: The outer surfaces of the four sliding blocks (8) are slidably connected to the inner walls of the four sliding grooves (7). The vertical cross-sections of the four sliding blocks (8) are all T-shaped. The lower ends of the four sliding blocks (8) are fixed to the two ends of the two pressing frames (10). The two pressing frames (10) are arranged opposite to each other.

6. The warp yarn cutting device for a sizing machine according to claim 1, characterized in that: The upper ends of the four springs (9) are fixed to the inner walls of the upper ends of the four slide grooves (7), the lower ends of the four springs (9) are fixed to the upper ends of the four sliding blocks (8), the four slide grooves (7) pass through the four corners of the lower end of the sliding frame (5), the outer surface of the sliding frame (5) is slidably connected to the inner wall of the support frame (3), and the cross section of the sliding frame (5) is set in an I-shape.

7. The warp yarn cutting device for a sizing machine according to claim 1, characterized in that: The two reserved holes (2) pass through both ends of the base (1), and the two ends of the support frame (3) are fixed to the upper end of the base (1). The vertical section of the support frame (3) is U-shaped.

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