Crank shedding connection structure of high-speed loom

Abstract

The utility model relates to a crank opening connecting structure of high -speed loom, including opening connecting rod subassembly and jack shaft subassembly, the opening connecting rod subassembly includes opening connecting rod and connecting rod pin, one end of opening connecting rod is equipped with the bearing, the inner ring of bearing is sleeved in connecting rod pin, and the outer circle and spacer bushing are equipped on both sides of bearing on connecting rod pin, the jack shaft subassembly includes jack shaft and locking block, the utility model discloses loom crank opening connecting mode adopts the bridge type structure, and jack shaft connecting rod changes U type double support structure, and opening connecting rod is placed in the middle, and is supported on the both sides support arm of jack shaft through connecting rod pin and bearing, when opening connecting rod reciprocates up and down, both ends of bearing are supported, and the reciprocating force of opening connecting rod is evenly applied on the both sides support arm of jack shaft, and jack shaft can not occur torsional deformation, and bearing only bears radial force, and there is no deflection force, and bearing carrying capacity improves, and service life is long.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery, and in particular to a crank-opening connection structure for a high-speed loom. Background Technology

[0002] In the existing loom crank shedding structure, the connection between the heald lifting rod and the shedding rod is a single-sided cantilever. When the shedding rod reciprocates, due to the single-sided force of the cantilever structure, the heald lifting rod undergoes repeated torsional deformation. This causes the bearing to bear not only radial force but also a large deflection force when rotating, making it prone to damage. Its service life is very short at high speeds. In addition, the fastening method between the connecting pin and the groove on the heald rod is unreliable and prone to loosening and damage. Utility Model Content

[0003] To address the technical problem in current loom crank shedding connection structures where the shedding connecting rod is installed on one side of the heald rod, causing the heald rod to repeatedly twist and deform due to the reciprocating force exerted on it, this invention provides a crank shedding connection structure for high-speed looms. This structure improves the current cantilever structure to double-sided support, preventing torsional deformation under stress and increasing connection strength, thereby enhancing loom operating speed.

[0004] The technical solution is as follows: A crank shedding connection structure for a high-speed loom, comprising a shedding connecting rod assembly and a heald rod assembly; the shedding connecting rod assembly includes a shedding connecting rod and a connecting rod pin, one end of the shedding connecting rod is fitted with a bearing, the connecting rod pin is fitted onto the inner ring of the bearing, and the connecting rod pin has an outer circle and a spacer on both sides of the bearing, wherein the outer circle is fixedly connected to the connecting rod pin, and the spacer is detachably fitted onto the connecting rod pin; the heald rod assembly includes a heald rod and a locking block, the heald rod has a U-shaped support portion, the front ends of the two side arms of the U-shaped support portion are respectively provided with longitudinally extending slots, the two slots are correspondingly fitted onto the two ends of the connecting rod pin, a spacing ring is provided at the front end of each slot, a locking block is provided on the outer side of each of the two arms, the locking block has a round hole in the middle that matches the connecting rod pin, the two locking blocks pass through the two ends of the connecting rod pin respectively and are fastened to the two side arms of the heald rod, and a locking nut is fitted at both ends of the connecting rod pin.

[0005] Optionally, the connecting rod pin has contact surfaces on opposite sides that are parallel to the upper and lower bottom surfaces of the slot.

[0006] Optionally, the locking block has a U-shaped structure, with an outer-high-inner-low slope formed on the inner side of the front end of the locking block, and locking slopes that are adapted to the front slope of the locking block formed on the upper and lower sides of the support arm.

[0007] Optionally, the length of the slot is not less than half the overall length of the lifting rod.

[0008] Optionally, the front end of the support arm is provided with a threaded hole that runs from top to bottom through the slot, and a bolt is fitted in the threaded hole. The spacing ring is provided with a shaft hole and is respectively fitted onto the bolt.

[0009] Optionally, oil seals are provided on both sides of the bearing, and a bearing cap is also provided on the side near the spacer. The bearing cap is fixed on the open connecting rod. One oil seal is located on the inner ring of the bearing cap and contacts the outer side of the spacer; the other oil seal is located on the open connecting rod and contacts the outer side of the outer circle.

[0010] The beneficial effects of this utility model are:

[0011] The loom crank shedding connection of this utility model adopts a bridge structure, and the heddle rod is changed to a U-shaped double support structure. The shedding connecting rod is placed in the middle and supported on the two side arms of the heddle rod by connecting rod pins and bearings. When the shedding connecting rod moves up and down, both ends of the bearing are supported. The reciprocating force of the shedding connecting rod is evenly applied to the two side arms of the heddle rod. The heddle rod will not undergo torsional deformation. The bearing only bears radial force and there is no deflection force. The bearing load-bearing capacity is improved and the service life is long.

[0012] In addition, a wedge locking structure is added to the connection between the pin and the heddle rod, which increases the strength of the connection between the connecting rod pin and the heddle rod and ensures that the loom will not loosen under high speed and heavy load. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the crank-opening connection structure of an existing loom.

[0014] Figure 2 This is a three-dimensional structural diagram of the crank opening connection structure of the high-speed loom of this utility model.

[0015] Figure 3 This is a side view of the present invention.

[0016] Figure 4 This is a front view of the present invention.

[0017] Figure 5 This utility model Figure 3 A cross-sectional view along the AA direction.

[0018] Figure 6 This is a perspective view of the lifting rod of this utility model.

[0019] Figure 7 This is a front view of the lifting rod of this utility model.

[0020] Figure 8 This is a schematic diagram of the locking block of this utility model.

[0021] Figure 9This is a three-dimensional structural diagram of the connecting pin of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1: Open connecting rod, 2: Bearing, 3: Connecting rod pin, 31: Outer circle, 32: Contact surface, 4: Bearing cap, 5: Spacer, 6, 7: Oil seal, 8: Lifting rod, 81: Support arm, 82: Groove, 83: Locking bevel, 84: Threaded hole, 9, 10: Locking block, a: Round hole, b: Bevel, 11, 12: Washer, 13, 14: Spacer ring, 15, 16: Nut, 17: Bolt. Detailed Implementation

[0023] The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0024] Figure 1 The diagram shows the existing crank shedding structure of a high-speed loom. The connection between the heald lifting rod 8a and the shedding rod 1a is a single-sided cantilever. This structure, due to the single-sided force on the cantilever, easily causes the heald lifting rod 8a to twist and deform, and the bearings are also prone to damage due to the large deflection force. Furthermore, the existing connecting pin and the slot of the heald lifting rod 8a are only secured by a nut, which easily loosens over long-term operation. Therefore, the inventor has improved the aforementioned existing single-cantilever, single-sided force-bearing structure.

[0025] Figure 2 This is a three-dimensional structural diagram of the crank opening structure of the improved high-speed loom provided in this embodiment. By improving the current single cantilever structure into a double-sided supported bridge structure, the torsional deformation of the mechanism under stress is prevented, and the connection strength is improved, which can increase the loom's operating speed.

[0026] like Figure 2-5 The crank shedding connection structure of the high-speed loom shown includes a shedding connecting rod assembly and a heddle rod assembly.

[0027] The open connecting rod assembly includes an open connecting rod 1, a bearing 2, and a connecting rod pin 3. One end of the open connecting rod 1 has a bearing hole and an assembly hole. The bearing 2 is assembled in the bearing hole of the open connecting rod 1. The connecting rod pin 3 is fitted onto the inner ring of the bearing 2. The connecting rod pin 3 has an outer circle 31 and a spacer 5. The outer circle 31 is integrally formed with the connecting rod pin 3. The spacer 5 is detachably fitted onto the connecting rod pin 3. The outer circle 31 and the spacer 5 are located on both sides of the bearing 2. The bearing cap 4 is fastened to the open connecting rod 1 with screws on the side near the spacer 5. The skeleton oil seal 7 is installed in the assembly hole of the open connecting rod 1. The inner hole of the oil seal 7 contacts the outer side of the outer circle 31 of the connecting rod pin 3. The oil seal 6 is installed in the hole of the bearing cap 4. The inner hole of the oil seal 6 contacts the outer side of the spacer 5.

[0028] The heald frame assembly includes a heald frame lifting rod 8 with a U-shaped support, and locking blocks 9 and 10 fastened to both sides of the lifting rod 8. (See reference) Figure 6 and Figure 7 The two side arms 81 of the U-shaped support have longitudinally extending slots 82 at their front ends. These slots 82 are fitted onto the outer ends of the connecting rod pins 3. One slot 82 has a spacing ring 13 at its front end, and the other slot 82 has a spacing ring 14 at its front end. Specifically, each of the two arms 81 has a threaded hole 84 extending downwards through the slot 82. Bolts 17 are fitted into these threaded holes 84. The spacing rings 13 and 14 have shaft holes, which are fitted onto the corresponding bolts 17. (Reference) Figure 4 and Figure 8 One of the support arms 81 has a locking block 9 on its outer side, and the other support arm 81 has a locking block 10 on its outer side. The locking blocks 9 and 10 are U-shaped buckles, and a round hole a is opened in the middle of their main body to match the connecting rod pin 3.

[0029] The assembled open connecting rod assembly is inserted into the slots 82 on both sides of the lifting rod 8. Then, the spacing rings 13 and 14 are respectively installed on the front ends of the two arms 81, and the bolts 17 are installed in the threaded holes 84 and tightened to fix the spacing rings. At this time, one side of the outer circle 31 is in contact with the inner side of one of the arms 81, and one side of the spacer 5 is in contact with the inner side of the other arm 81.

[0030] Locking blocks 9 and 10 are passed through both ends of the connecting rod pin 3 and fastened to the two arms 81 of the lifting rod 8. Flat washers, anti-loosening washers 11 and 12, and nuts 15 and 16 are respectively fitted onto both ends of the connecting rod pin 3, and then nuts 15 and 16 are tightened. The pressure of nuts 15 and 16 is applied to locking blocks 9 and 10 through locking washers and flat washers 11 and 12. It should be noted that the inner sides of both ends of locking blocks 9 and 10 are inclined surfaces b with the outer side higher than the inner side, and the outer opening size is larger than the bottom size. The upper and lower sides of the support arms 81 respectively form locking inclined surfaces 83 that are adapted to the front inclined surfaces b of locking blocks 9 and 10. At this time, the inner inclined surfaces of locking blocks 9 and 10 press against the outer inclined surfaces of the two support arms of the lifting rod 8. In this way, while axially pressing, locking blocks 9 and 10 tighten the upper and lower parts of the two support arms 81 of the lifting rod 8 towards the middle, so that the support arms 81 clamp the connecting rod pin 3 into a solid whole. When the open connecting rod 1 drives the connecting rod pin 3 to move up and down reciprocally, the connection between the connecting rod pin 3 and the lifting rod 8 will not loosen, thus achieving a firm positioning of the open connecting rod 1 and the lifting rod 8.

[0031] In one specific embodiment, the length of the slot 82 is not less than half the overall length of the heddle rod 8. The distance from the connecting rod pin 3 to the swing center of the heddle rod 8 is adjusted according to the opening size and process requirements to achieve different swing angles for the heddle rod 8. Additionally, the connecting rod pin 3 has contact surfaces 32 on opposite sides, parallel to the upper and lower bottom surfaces of the slot 82, forming a double-sided bridge structure. (See reference [link to specific details]). Figure 9 .

[0032] This utility model features a heald rod 8 with double-sided support arms 81, connected to an open connecting rod 1 via a connecting rod pin 3 with a bearing 2 in the middle. The open connecting rod 1 is located in the middle of the left and right support arms 81 of the heald rod 8, forming a bridge-type support connection. The support arm 81 is designed with a long, narrow slot 82 to support the connecting rod pin 3. The distance from the connecting rod pin 3 to the swing center of the heald rod 8 can be adjusted according to the size of the opening and process requirements to achieve different swing angles for the heald rod 8. Furthermore, the connection points between the support arms 81 on both sides of the heald rod 8 and the locking block 9 are inclined, forming a wedge-shaped connection, providing a clamping effect in both the lateral and longitudinal directions while locking laterally. Simultaneously, the ends of the slots 82 are equipped with spacing rings 13 and 14, the height of which is slightly less than the width of the slot. The support arms 81 of the heald rod 8 are tightened with bolts 17, causing the slot to contract and providing auxiliary clamping for the connecting rod pin 3.

[0033] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A crank shedding connection structure of a high speed loom comprising a shedding link assembly and a heald rod assembly, characterized by: The open-end connecting rod assembly includes an open-end connecting rod (1) and a connecting rod pin (3). One end of the open-end connecting rod (1) is fitted with a bearing (2). The connecting rod pin (3) is fitted onto the inner ring of the bearing (2). The connecting rod pin (3) has an outer circle (31) and a spacer (5) on both sides of the bearing (2). The outer circle (31) is fixedly connected to the connecting rod pin (3), and the spacer (5) is detachably fitted onto the connecting rod pin (3). The heald rod (8) assembly includes a heald rod (8) and a locking block. The heald rod (8) has a U-shaped support portion. The front ends of the two side arms (81) of the U-shaped support are respectively provided with longitudinally extending slots (82). The two slots (82) are respectively fitted onto the two ends of the connecting rod pin (3). A spacing ring is provided at the front end of the slots (82). A locking block is provided on the outer side of the two arms (81). A round hole (a) adapted to the connecting rod pin (3) is provided in the middle of the locking block. The two locking blocks pass through the two ends of the connecting rod pin (3) and are fastened on the two side arms (81) of the lifting rod (8). Locking nuts are respectively installed at the two ends of the connecting rod pin (3).

2. The crank shedding connection structure of a high speed loom according to claim 1, wherein The connecting rod pin (3) has contact surfaces (32) on its opposite sides that are parallel to the upper and lower bottom surfaces of the slot (82).

3. The crank shedding connection structure of a high-speed loom according to claim 1 or 2, characterized in that, The locking block has a U-shaped structure, with an inclined surface (b) formed on the inner side of the front end of the locking block that is higher on the outside and lower on the inside. The upper and lower sides of the support arm (81) form locking inclined surfaces (83) that are adapted to the inclined surface (b) at the front end of the locking block.

4. The crank shedding connection structure of a high speed loom according to claim 3, wherein The length of the slot (82) is not less than half the overall length of the lifting rod (8).

5. The crank shedding connection structure of a high speed loom according to claim 4, wherein The front end of the support arm (81) is provided with a threaded hole (84) that runs from top to bottom through the slot (82). A bolt (17) is installed in the threaded hole (84). The spacing ring is provided with a shaft hole and is respectively fitted onto the bolt (17).

6. The crank shedding connection structure of a high speed loom according to claim 5, wherein Oil seals are provided on both sides of the bearing (2), and a bearing cover (4) is provided on the side near the spacer (5). The bearing cover (4) is fixed on the open connecting rod (1). One oil seal is located on the inner ring of the bearing cover (4) and contacts the outer side of the spacer (5); the other oil seal is located on the open connecting rod (1) and contacts the outer side of the outer circle (31).

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