A plug-in machine for producing a papermaking wire mesh bottom net

Abstract

The application belongs to the field of papermaking equipment and proposes a splicing machine for producing a papermaking screen bottom screen, which comprises a rack, weft line removal material traction rollers, weft line splicing material release rollers, line pressing mechanisms, line combining mechanisms, line selection splicing mechanisms, material running boxes, line hooking mechanisms and automatic seam arranging mechanisms. The automatic seam arranging mechanisms comprise a web feeding roller group, a line bearing group and a guide wheel group. The web feeding roller group transports the part of the papermaking screen carpet to be spliced towards the center of the rack. The line bearing group orderly sends the free ends of the warp lines moving from bottom to top upwards. The line hooking mechanism is used to hook the free ends of the warp lines and make the hooked warp lines in the selection direction of the line selection splicing mechanism. The line selection splicing mechanism comprises a moving plate moving through the splicing area and a rapier assembly. The rapier assembly is used to select the warp lines and form clamping of the warp lines under the action of the warp line tension. The device has reasonable design, low space cost, high automatic seam arranging efficiency and is conducive to improving the quality of the splicing area, and is suitable for large-scale promotion.

Description

Technical Field

[0001] This invention belongs to the field of papermaking equipment, and particularly relates to a splicing machine for producing papermaking wire mesh bottom wire. Background Technology

[0002] Papermaking wire mesh is an accessory on papermaking machines, serving as the most important medium for paper web formation and dewatering. It plays a crucial role in the quality of the finished paper and is a consumable item used in the papermaking industry for dewatering. With the rapid development of industry, my country's papermaking wire mesh technology is also constantly innovating. Papermaking wire mesh is woven from copper wire, stainless steel wire, polyester monofilament, nylon filament, etc. Papermaking webs are woven on a loom by interlacing warp and weft threads. Since the webs used in papermaking machines need to be in a seamless loop state, some weft threads are usually removed, and the warp threads at both ends are woven together with the weft threads to form a loop fabric. This allows it to be used as a complete papermaking web in papermaking equipment. For example, CN202080088212.3 discloses a papermaking web that has at least one basic structure and at least one layer of cut fibers or short fibers arranged on the basic structure. The web has at least one seam area in which the seam rings are connected to each other by at least one insert to make the papermaking web a loop. At least one short fiber layer is separated in the seam area by at least one cut to form a seam cover and a seam wedge.

[0003] The seaming methods for papermaking wire mesh are gradually moving away from manual labor, with semi-automatic and fully automatic seaming equipment available. In these seaming machines, the warp threads at both ends of the wire mesh need to be interlocked with the added weft threads to form a new warp-weft structure. Since the wire mesh is quite long, fully unfolding the seam area would significantly increase the size of the equipment and production costs. However, if it's not fully unfolded, the free ends of the warp threads are scattered, making it difficult to ensure the rapier clamps the warp threads and inserts them into the weft threads. Currently, the equipment used for seaming papermaking wire mesh still largely requires manual labor to align the free ends of the warp threads, resulting in high labor intensity for workers. Furthermore, existing thread selection and interlocking mechanisms use sliplocks or hooks to pull the warp threads without a corresponding self-locking mechanism. While the warp threads can be pulled into the seam area, they may not be pulled taut, leading to a decrease in the weaving tension of the warp and weft threads in the seam area and affecting the seam quality. Additionally, inaccurate control of the rapier movement distance at the interlocking execution end is another factor contributing to insufficient warp thread tension. Summary of the Invention

[0004] This invention addresses the technical problems existing in the above-mentioned splicing machine for producing papermaking mesh and blanket bottom nets by proposing a splicing machine for producing papermaking mesh and blanket bottom nets that is reasonably designed, has low space cost, high automatic seam arrangement efficiency, and is conducive to improving the quality of the seam area.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The papermaking mesh backing mesh production splicing machine provided by the present invention includes a frame. The rear side of the frame is provided with vertically distributed weft yarn rejection traction rollers and weft yarn splicing material release rollers. The front side of the frame is provided with a pressing mechanism, a paralleling mechanism, a pair of yarn selection splicing mechanisms, and a feed box. The pressing mechanism is used to press down weft yarns at different positions in a staggered manner. The paralleling mechanism is used to bring warp and weft yarns together. The yarn selection splicing mechanism is used to select and clamp the free end of the warp yarn and insert it into the seam area. The feed box is used to gradually unload the spliced ​​mesh. The frame is provided with automatic seam-aligning mechanisms on both sides near the pressing mechanism. The automatic seam-aligning mechanism includes a near-machine... A wire feeding roller assembly is installed at the bottom of the frame. This assembly conveys the portion of the papermaking wire mat to be joined towards the center of the frame. Above the wire feeding roller assembly is a warp bearing assembly, which orderly feeds the free ends of the warp threads moving from bottom to top upwards. A guide wheel assembly is installed on the front side of the warp bearing assembly. This guide wheel assembly is used to release the warp threads, and a hooking mechanism is installed on its front side. This hooking mechanism is used to hook the free ends of the warp threads and position the selected warp threads in the selection direction of the thread selection and insertion mechanism. The thread selection and insertion mechanism includes a movable plate that moves through the joint area and a rapier assembly. The moving trajectories of the two thread selection and insertion mechanisms are X-shaped. The rapier assembly is used to select the warp threads and clamp them under the action of the warp thread tension.

[0006] Preferably, the feeding roller assembly includes multiple horizontally inclined rollers, each roller is provided with a friction pad, and each roller end is provided with a pulley with multiple grooves. Adjacent pulleys are connected by belt drive, and a reduction motor is provided at the power input end of one of the rollers.

[0007] Preferably, the wire bearing assembly includes a wire guide rod connected to the frame. A vertical wire guide groove is provided in the middle of the wire guide rod, dividing the wire guide rod into a wire blocking section and a guide section. The length of the wire blocking section is greater than the length of the guide section. Both the wire blocking section and the guide section are provided with cylindrical grooves. Multiple balls distributed along the vertical length are provided in the cylindrical grooves. Part of the spherical surface of the balls is located in the wire guide groove. A bearing plate is provided outside the cylindrical groove. A sealing cover is provided outside the bearing plate. A retaining rod that supports and rolls with adjacent balls is provided inside the sealing cover.

[0008] Preferably, the guide wheel assembly includes a support frame, on which a rotating wheel is disposed, and the surface of the rotating wheel is provided with friction grooves for frictional engagement with the warp threads.

[0009] Preferably, the frame includes two pairs of oppositely distributed side plates, with a supporting square tube between the side plates. The side plates have a material feed port near their bottom, and the inner side of the material feed port is used to install the wire feeding roller assembly.

[0010] Preferably, the sword shaft assembly includes a sword plate, one side of which is provided with an arc groove, and a core tube is provided in the arc groove. The center of the core tube faces the front end of the sword plate and a clamping plate is provided at its center for rotational cooperation. The sword plate is provided with a braking groove near the end of the arc groove, and a braking clip is provided in the braking groove. The braking clip is used to select the warp and clamp the warp with the clamping plate under the action of the warp tension.

[0011] Preferably, the brake caliper includes a cam, and a V-shaped caliper plate is provided on one side of the cam. The caliper plate and the rotation center of the cam are provided with an axle and a torsion spring, and the torsion spring connects the caliper plate and the brake groove.

[0012] Preferably, the line selection and insertion mechanism includes a motor and a transmission base. The power output end of the motor is provided with a transmission component that drives the moving plate. The moving plate is provided with a plurality of indexing slots evenly distributed along its length. The transmission component includes a transmission wheel. The surface of the transmission wheel is provided with indexing teeth that engage with the indexing slots. The transmission component drives the moving plate to perform reciprocating linear motion on the inner top of the transmission base.

[0013] Preferably, the transmission base is provided with a sensing component that cooperates with the movable plate. The sensing component includes a fixed hinge on the top of the transmission base, a lever plate rotatably mounted on the fixed hinge, a limiting handle on one side of the lever plate that contacts and cooperates with the top surface of the transmission base, a protrusion on the bottom surface of the front end of the lever plate that cooperates with the indexing port, a limiting support near the rear end of the lever plate, a fork at the bottom of the limiting support that cooperates with the lever plate, and a sensor on the rear side of the limiting support. The sensor and the end of the lever plate are engaged by pressure.

[0014] Preferably, the hooking mechanism includes a support arm, on which a fixed hook arm is provided, and on which a movable hook arm is rotatably provided. The length of the movable hook arm is greater than that of the fixed hook arm, and its bottom surface is provided with a hook groove for hooking the warp thread. A hinge is provided at the top of the movable hook arm, and a telescopic drive arm is provided at the top of the hinge. The telescopic drive arm is connected to the frame.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0016] 1. The papermaking mesh bottom wire production splicing machine provided by the present invention has an automatic seam arrangement mechanism that can automatically arrange the seams of the papermaking mesh to be spliced ​​to a certain extent, without having to fully unfold the papermaking mesh on the equipment, which helps to save equipment space and production costs; for example, the feeding roller group conveys the papermaking mesh to be spliced ​​towards the center of the frame, while the spliced ​​part of the papermaking mesh is unloaded on the feeding box, which helps to improve the efficiency of splicing; the numbering bearing group orderly pushes the free ends of the warp threads moving from bottom to top upwards, and the guide wheel group releases the warp threads, which helps the warp threads to be selected one by one by the selection and splicing mechanism.

[0017] 2. The splicing machine for producing papermaking wire mesh bottom net provided by the present invention has a hooking mechanism used to hook the free end of the warp thread and make the taken warp thread in the selection direction of the selection splicing mechanism, which can ensure the accuracy of the selection of the warp thread by the selection splicing mechanism and help improve the splicing quality of the joint area.

[0018] 3. The insertion machine for producing papermaking wire mesh and blanket bottom wire provided by the present invention has a rapier assembly of its wire selection and insertion mechanism that can clamp the warp under the action of the warp tension after selecting the warp, which helps to ensure the tension of the warp and weft insertion and improve the insertion quality.

[0019] This device is reasonably designed, has low space cost, high efficiency in automatic seam arrangement, and helps improve the quality of the seam area, making it suitable for large-scale promotion. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 An isometric view of the splicing machine for producing papermaking wire mesh bottom wire provided in the embodiment;

[0022] Figure 2 A side view of the splicing machine for producing papermaking wire mesh bottom wire provided in the embodiment;

[0023] Figure 3 The front view of the papermaking wire mesh bottom wire production splicing machine (without feed box) provided in the embodiment;

[0024] Figure 4 A top view of the splicing machine for producing papermaking wire mesh bottom wire provided in the embodiment;

[0025] Figure 5 An isometric view of the pressure-pressing mechanism provided in the embodiment;

[0026] Figure 6An isometric view of the paralleling mechanism provided in the embodiment;

[0027] Figure 7 for Figure 1 Enlarged schematic diagram of structure A in the middle;

[0028] Figure 8 for Figure 4 Enlarged schematic diagram of the B-structure;

[0029] Figure 9 Front view of the cable selection and insertion mechanism and sensing components;

[0030] Figure 10 An isometric view of the rapier assembly provided in the embodiment;

[0031] Figure 11 A schematic diagram of the brake card provided in the embodiment;

[0032] Figure 12 An isometric view of the wire feeding roller assembly (without a geared motor) provided for an embodiment;

[0033] Figure 13 Axonometric drawings of the linear bearing assembly and guide wheel assembly provided for the embodiment;

[0034] Figure 14 A cross-sectional view of the linear bearing assembly provided for the embodiment;

[0035] Figure 15 A front view of the hook mechanism provided for an embodiment;

[0036] Figure 16 This is a schematic diagram showing the distribution of the two ends of the papermaking wire mesh and the weft threads to be inserted.

[0037] In the above figures: 1. Frame; 1a. Side plate; 1b. Supporting square tube; 1c. Feed port; 2. Weft yarn rejection traction roller; 3. Weft yarn insertion release roller; 4. Pressing mechanism; 41. Double-rod cylinder; 42. Pressing plate; 5. Thread paralleling mechanism; 6. Thread selection insertion mechanism; 61. Moving plate; 61a. Indexing port; 62. Rapier assembly; 621. Rapier plate; 622. Arc groove; 623. Core tube; 624. Clamping plate; 625. Braking groove; 626. Braking clip; 626a. Cam; 626b. Clipping plate; 626c. Wheel axle; 626d. Torsion spring; 63. Motor; 64. Transmission seat; 65. Transmission assembly; 65a. Transmission wheel; 65b. Indexing gear; 7. Feed box; 8. Automatic seam clearing mechanism; 81. Mesh feeding roller group 811. Roller; 812. Friction pad; 813. Pulley; 814. Belt; 82. Wire bearing assembly; 821. Cable guide rod; 821a. Cable stop section; 821b. Guide section; 822. Cable groove; 823. Cylindrical groove; 824. Ball bearing; 825. Bearing plate; 826. Sealing cover; 827. Holding rod; 83. Guide wheel assembly; 831. Support frame; 832. Rotary wheel; 833. Friction groove; 9. Cable hooking mechanism; 91. Support arm; 92. Fixed hook arm; 93. Movable hook arm; 94. Hook groove; 95. Hinge; 96. Telescopic drive arm; 10. Sensing component; 101. Fixed hinge support; 102. Paddle plate; 103. Limit handle; 104. Protrusion; 105. Limit support; 106. Sensor. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0039] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0040] Examples, such as Figures 1-16As shown, the plug-in machine for producing the bottom net of a papermaking wire blanket provided by the present invention includes a frame 1. A weft removal material traction roller 2 and a weft plug-in material release roller 3 are arranged vertically at the rear side of the frame 1. A wire pressing mechanism 4, a wire merging mechanism 5, a pair of wire selection and plug-in mechanisms 6, and a material feeding box 7 are arranged at the front side of the frame 1. The wire pressing mechanism 4 is used to press down the wefts at different positions at different times. The wire merging mechanism 5 is used to merge the warp J and the weft W. The wire selection and plug-in mechanism 6 is used to select and hold the free end of the warp and insert it into the joint area. The material feeding box 7 is used to gradually unload the sewn wire blanket from the machine. Among them, the wire pressing mechanism 4 adopts two rows of cylinders, and the two rows of cylinders are lifted and lowered at different times in a staggered distribution manner, that is, by pressing the wire, the warp selected by the wire selection and plug-in mechanism 6 is inserted into the weft in the way of threading a needle, and the overall weaving pattern is controlled by four brown sheets supporting the plug-in machine. The wire merging mechanism 5 adopts a servo motor and a linkage mechanism as a planar motion structure, and its execution part adopts a dense net structure. The dense net structure can move back and forth under the linkage of the servo motor and the linkage mechanism, and can complete the wire merging of the warp inserted into the weft during the forward and backward movement. The material feeding box 7 includes a box body and a material feeding roller driven by a power device. Both the box body and the material feeding roller support the papermaking wire blanket, and mainly the part that has been sewn. The part to be sewn is located in the joint area in the direction of the wire merging mechanism 5. The rotation of the material feeding roller makes the papermaking wire blanket feed a certain amount, so that the sewn part is unloaded from the machine. Since some of the original wefts need to be removed when the papermaking wire blanket is sewn, the removed wefts are pulled off the machine together by the weft removal material traction roller 2. The wefts at both ends of the joint of the papermaking wire blanket are divided into two groups and wound around the weft removal material traction roller 2. The end of the removed weft can be pulled by a traction mobile device or a counterweight device; and the wefts to be inserted into the papermaking wire blanket are released by the weft plug-in material release roller 3, and the wefts on the weft plug-in material release roller 3 and the lower end of the papermaking wire blanket maintain a certain tension.

[0041] Regarding the distribution of the warp and weft of the papermaking wire blanket on the plug-in machine, as Figure 16 shown, W is the weft, J is the warp, both sides of which are the two ends of the papermaking wire blanket, and the middle part is the weft that needs to be added. The removed wefts are not shown.

[0042] To improve the splicing efficiency of the papermaking wire mesh in this device, the frame 1 provided by this invention is equipped with an automatic stitching mechanism 8 on both sides near the pressing mechanism 4. The automatic stitching mechanism 8 includes a wire feeding roller group 81 located near the bottom of the frame 1. The wire feeding roller group 81 conveys the part of the papermaking wire mesh to be spliced ​​towards the center of the frame 1. A counting bearing group 82 is located above the wire feeding roller group 81. The counting bearing group 82 orderly feeds the free ends of the warp threads moving from bottom to top upwards. A guide wheel assembly 83 is provided on the front side of 82. The guide wheel assembly 83 is used to release the warp yarn, and a hooking mechanism 9 is provided on its front side. The hooking mechanism 9 is used to hook the free end of the warp yarn and make the taken warp yarn in the selection direction of the yarn selection and insertion mechanism 6. The yarn selection and insertion mechanism 6 includes a movable plate 61 that moves through the seam area and a rapier assembly 62. The moving trajectory of the movable plates 61 of the two yarn selection and insertion mechanisms 6 is X-shaped. The rapier assembly 62 is used to select the warp yarn and form a clamping of the warp yarn under the action of the warp yarn tension.

[0043] Specifically, the automatic seam-setting mechanism 8 can automatically set seams for the parts of the papermaking wire mesh to be joined to a certain extent, without having to fully unfold the papermaking wire mesh on the equipment. The papermaking wire mesh can be pre-stored near the splicing machine, which helps save equipment space and production costs. More specifically, the wire feeding roller group 81 conveys the part of the papermaking wire mesh to be joined towards the center of the frame 1, while the joined part of the papermaking wire mesh is unloaded on the feed box 7. This allows the warp threads at the free ends to enter the counting bearing group 82 one by one from the position of the wire feeding roller group 81. The counting bearing group 82 pushes the free ends of the warp threads moving from bottom to top upwards in an orderly manner to the maximum extent. The guide wheel group 83 releases the warp threads, which helps the warp threads to be selected one by one by the selection and splicing mechanism 6, thus improving the efficiency of the joining. Connected to the automatic seam-laying mechanism 8, the thread-hooking mechanism 9 provided by the present invention is used to hook the free ends of the warp threads one by one and make the selected warp threads be in the selection direction of the thread selection and insertion mechanism 6. This can ensure the accuracy of the thread selection by the thread selection and insertion mechanism 6, reduce the probability of misaligned and missing threads, and help improve the seam quality of the seam area. Furthermore, the two warp selection and insertion mechanisms 6 in this splicing machine move their respective moving plates 61 in an X-shaped trajectory. This means the rapier assembly 62 is inserted obliquely into the seam area where the weft thread is located to select the warp thread. Therefore, the extension endpoints of the two warp selection and insertion mechanisms 6 are symmetrical left and right, and their reset endpoints are also basically symmetrical left and right. Consequently, the state of the warp thread inserted into the weft thread is also basically consistent, which helps improve the seam quality. Regarding the rapier assembly 62, after selecting the warp thread, it can automatically clamp the warp thread under the action of the warp thread tension, which helps ensure the tension of the warp and weft thread insertion. When the merging mechanism 5 pushes the warp and weft threads together, the brake 626 and the moving plate 61 are already in a stationary state. The free end of the warp thread can be disengaged from its clamped position by the pushing force of the merging mechanism 5, allowing the rapier assembly 62 to perform the next cycle of insertion, thereby improving the seam efficiency of this device. Excess warp thread ends after insertion are trimmed by other equipment.

[0044] To improve the conveying effect of the feeding roller assembly 81 on the part of the papermaking wire mat to be joined, the feeding roller assembly 81 provided by the present invention includes multiple horizontally inclined rollers 811. Friction pads 812 are provided on the rollers 811, and pulleys 813 with multiple grooves are provided at the ends of the rollers 811. Adjacent pulleys 813 are driven by belts 814. A geared motor is provided at the power input end of one of the rollers 811. One roller 811 is driven by the geared motor, and the other rollers 811 are powered by the pulleys 813 and belts 814. The friction pads 812 on the rollers 811 rub against and convey the part of the wire mat to be joined, so that the wire mat is pulled by the feed box 7 on one hand and fed by the feeding roller assembly 81 on the other. This allows the device to achieve a certain degree of automatic feeding while maintaining a small footprint, which is beneficial to improving the joining efficiency.

[0045] To improve the counting performance of the counting bearing assembly 82, the counting bearing assembly 82 provided by the present invention includes a wire guide rod 821 connected to the frame 1. A vertical wire guide groove 822 is provided in the middle of the wire guide rod 821. The wire guide groove 822 divides the wire guide rod 821 into a wire blocking section 821a and a guide section 821b. The length of the wire blocking section 821a is greater than the length of the guide section 821b. Both the wire blocking section 821a and the guide section 821b are provided with cylindrical grooves 823. A plurality of balls 824 distributed along their vertical length are provided in the cylindrical grooves 823. Part of the spherical surface of the balls 824 is located in the wire guide groove 822. A bearing plate 825 is provided outside the cylindrical grooves 823. A sealing cover 826 is provided outside the bearing plate 825. A retaining rod 827 is provided on the inner side of the sealing cover 826, which supports and rolls with the adjacent balls 824. In this design, the width of the warp thread groove 822 gradually narrows from bottom to top, and correspondingly, the relative gap between the paired balls 824 also gradually decreases from bottom to top. This allows the free ends of the warp threads fed by the wire feeding roller assembly 81 and the feed box 7 to move along the guide section 821a towards the warp thread groove 822. Besides the effects of the wire feeding roller assembly 81 and the feed box 7, the weight of the papermaking wire itself, coupled with the inherent alignment tendency of the warp threads, creates elastic tension in the warp thread gaps. Therefore, the warp threads entering the warp thread groove 822 can spread out somewhat and maintain a certain, but not entirely accurate, alignment order. Furthermore, when the warp threads pass through the paired balls 824, they can glide over the spherical surface of the balls 824, but the gap between the balls 824 limits the number of warp threads that can pass through, decreasing further upwards. Thus, the warp threads exit the warp thread groove 822 one by one, achieving the purpose of counting and arranging the warp threads. Meanwhile, the present invention uses a bearing plate 825 to provide two-wing support for the cable guide rod 821 and to provide an installation base for the sealing cover 826. The sealing cover 826 seals the working space of the ball 824 on the one hand, and the orderly arranged retaining rods 827 inside it function as the cage in the roller bearing to ensure the stability and orderliness of the ball 824 in the cylindrical groove 823.

[0046] To improve the connection performance between the automatic sewing mechanism 8 and the thread-hooking mechanism 9, the guide wheel assembly 83 provided by this invention includes a support frame 831, on which a rotating wheel 832 is mounted. The surface of the rotating wheel 832 is provided with friction grooves 833 for frictional engagement with the warp threads. In this way, the free end of the uppermost warp thread is orderly arranged at the top of the automatic sewing mechanism 8, and the thread-hooking mechanism 9 can hook it away. Moreover, the free end of the warp thread leaves the rotating wheel 832 along the friction grooves 833, ensuring the stability of the warp thread as it exits the automatic sewing mechanism 8, so that it does not disturb other warp threads and affect subsequent thread selection operations.

[0047] To improve feeding efficiency, the frame 1 provided by this invention includes two pairs of oppositely distributed sections 1a, with a supporting square tube 1b between them. Each section 1a has a feed inlet 1c near its bottom, and the inner side of the feed inlet 1c is used to install the wire feeding roller assembly 81. The frame 1 not only has high structural reliability but also provides a mounting base for the wire feeding roller assembly 81. It also allows the portion of the papermaking wire mat to be joined to move along the feed inlet 1c, moving upwards from the working surface of the wire feeding roller assembly 81.

[0048] To improve the joint quality of this device, the rapier assembly 62 provided by the present invention includes a rapier plate 621. An arc groove 622 is provided on one side of the rapier plate 621. A core tube 623 is provided in the arc groove 622. The center of the core tube 623 faces the front end of the rapier plate 621 and a clamping plate 624 is provided at its center for rotational cooperation with it. A braking groove 625 is provided on the rapier plate 621 near the end of the arc groove 622. A braking clip 626 is provided in the braking groove 625. The braking clip 626 is used to select the warp and clamp the warp with the clamping plate 624 under the action of the warp tension. Specifically, the rapier assembly 62 reciprocates through the cooperation of the transmission assembly 65 and the moving plate 61. As the brake clip 626 passes through the seam area from the transmission seat 64, its top surface smoothly transitions until the warp thread on the splicing machine side is moved from the front to the rear of the brake clip 626. The rapier assembly 62 is pulled back by the reverse drive of the transmission assembly 65. Since one end of the warp thread is on the papermaking wire, part of its tension is provided by the papermaking wire itself, while the reverse tension at its free end is provided by the reverse driving force of the transmission assembly 65 and the moving plate 61. This allows the warp thread to interact with the brake 626 the instant it is caught in the brake 626 and pulled, causing the brake 626 to flip and clamp the warp thread with the clamping plate 624. This activates a flexible self-locking mechanism, ensuring the tension of the rapier assembly 62 as it completes the insertion of the warp and weft threads. When the subsequent insertion machine pushes the warp and weft threads together, the brake 626 and the moving plate 61 are already stationary. The free end of the warp thread can be disengaged from its clamped position by the pushing force of the insertion mechanism 5, allowing the rapier assembly 62 to perform the next cycle of insertion.

[0049] To improve the self-locking effect of the brake caliper 626 on the warp, the brake caliper 626 provided by the present invention includes a cam 626a. A caliper plate 626b with a V-shaped structure is provided on one side of the cam 626a and is synchronously connected thereto. The V-shaped opening is inclined downward and the back is smooth upward. At the same time, a wheel axle 626c and a torsion spring 626d are provided at the rotation center of the caliper plate 626b and the cam 626a. The torsion spring 626d connects the caliper plate 626b and the brake groove 625. In its natural state, the torsion spring 626d keeps the brake 626 clamped downwards. However, the part of its top surface that protrudes from the blade 621 can smoothly transition the seam area where the weft yarn is located. It can effectively hook the free end of the warp yarn and let the warp yarn slide to the V-shaped opening of the cam 626a and the clamping plate 626b. The tension generated by the warp yarn being pulled can act on the wheel surface of the cam 626a. The cam 626a and the clamping plate 626b simultaneously flip and press the warp yarn down. While the clamping plate 624 is under the pressure of the warp yarn, it can flip slightly downwards, so that the warp yarn falls into the clamping range of the clamping plate 624 and the brake 626, thereby achieving the clamping of the warp yarn, which is beneficial to ensure the tension of the warp yarn in the subsequent insertion action.

[0050] Furthermore, to improve the transmission accuracy between the transmission wheel 65a and the moving plate 61, the wire selection and insertion mechanism 6 provided by the present invention also includes a motor 63 and a transmission base 64. The power output end of the motor 63 is provided with a transmission component 65 that drives the moving plate 61. The moving plate 61 is provided with a plurality of indexing slots 61a evenly distributed along its length. The transmission component 65 includes a transmission wheel 65a, and the surface of the transmission wheel 65a is provided with indexing teeth 65b that engage with the indexing slots 61a. The transmission component 65 drives the moving plate 61 to perform reciprocating linear motion on the inner top of the transmission base 64. In this way, the angle of rotation of the transmission component 65 driven by the motor 63 can be relatively accurately reflected as the linear movement distance and direction of the moving plate 61, thereby ensuring the controllability of the movement distance of the moving plate 61 and facilitating the tensioning of the warp wire.

[0051] To improve the control performance of the warp selection and insertion mechanism 6 on the insertion distance of the free end of the warp, the present invention provides a sensing component 10 on the transmission base 64 that cooperates with the moving plate 61. The sensing component 10 includes a fixed hinge 101 set on the top of the transmission base 64, a lever 102 rotatably mounted on the fixed hinge 101, a limiting handle 103 on one side of the lever 102 that contacts and cooperates with the top surface of the transmission base 64, a protrusion 104 on the bottom surface of the front end of the lever 102 that cooperates with the indexing port 61a, a limiting support 105 near the rear end of the lever 102, a fork at the bottom of the limiting support 105 that cooperates with the lever 102, and a sensor 106 on the rear side of the limiting support 105. The sensor 106 and the end of the lever 102 are engaged by pressure. Specifically, during the movement of the movable plate 61, its indexing port 61a can successively contact the mechanical sensing part of the sensing component 10, causing the sensing component 10 to generate pulse signals. The pulse signals are fed back to the control system, which then issues action commands to the stepper motor. In one complete working cycle, the stepper motor drives the transmission component 65 to rotate at the appropriate rotation timing at a relatively accurate angle. The rotation of the transmission component 65 is converted into the moving distance and direction of the movable plate 61, which can ensure the controllability of the warp thread insertion distance of this device. Specifically, under its own weight, the front end of the dial plate 102 naturally rests on the moving plate 61. The limit handle 103 and the fork prevent the dial plate 102 from tilting excessively. As the moving plate 61 is driven to move by the transmission assembly 65, the indexing port 61a successively passes the protrusion 104, causing the dial plate 102 to tend to tilt upwards. Its end falls within the sensing range of the sensor 106 with pulse characteristics. The sensor 106 sends a pulse signal to the control system of the motor 63, which in turn sends an action command to the stepper motor, driving the transmission assembly 65 to rotate. Therefore, the moving plate 61, the sensing assembly 10, the transmission assembly 65, and the motor 63 enable the moving plate 61 to make relatively accurate displacements, thereby ensuring the insertion quality of the warp and weft threads.

[0052] To improve the accuracy of thread hooking, the thread hooking mechanism 9 provided by the present invention includes a support arm 91, a fixed hook arm 92 is provided on the support arm 91, and a movable hook arm 93 is rotatably provided on the fixed hook arm 92. The length of the movable hook arm 93 is greater than the length of the fixed hook arm 92, and its bottom surface is provided with a hook groove 94 for hooking the warp thread. A hinge 95 is provided at the top of the movable hook arm 93, and a telescopic drive arm 96 is provided at the top of the hinge 95. The telescopic drive arm 96 is connected to the frame 1. The telescopic drive arm 96 is a cylinder or a hydraulic cylinder, and a cylinder with better immediacy is preferred here. In this way, the telescopic drive arm 96 drives the movable hook arm 93 to rotate a certain range around the hinge center of the movable hook arm and the fixed hook arm. This range causes the hook groove of the movable hook arm to flip in the direction of the first warp. The movable hook arm 94 avoids other warps and hooks the free end of the uppermost warp. Moreover, if the telescopic drive arm 96 is reset, the movable hook arm 93 will effectively pick up a warp that is about to be selected by the rapier assembly 62. At the same time, the fixed hook arm 92 is in a position above other warps, which can prevent other warps from being picked up along with it and mistakenly selected by the warp selection and insertion mechanism 6, but does not affect the hook groove from hooking the warp.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A splicing machine for producing a papermaking wire mesh bottom wire, comprising a frame, the rear side of the frame is provided with weft thread removal material traction rollers and weft thread splicing material release rollers distributed in an up-down manner, the front side of the frame is provided with a thread pressing mechanism, a thread combining mechanism, a pair of thread selection splicing mechanisms and a material running box, the thread pressing mechanism is used to press down weft threads at different positions at different times, the thread combining mechanism is used to combine warp threads and weft threads, the thread selection splicing mechanism is used to select and clamp the free end of a warp thread to splice to a joint area, and the material running box is used to gradually run the mesh out of the machine after the joint is spliced, characterized in that, The rack is provided with automatic seam arranging mechanism on both sides close to the line pressing mechanism, the automatic seam arranging mechanism includes a group of net conveying rollers arranged close to the bottom of the rack, the group of net conveying rollers convey the part of the papermaking net to be jointed to the center of the rack, a group of thread bearing sets are arranged above the group of net conveying rollers, the group of thread bearing sets orderly send the free end of the warp thread moving from bottom to top upwards, a group of guide wheels are arranged on the front side of the group of thread bearing sets, the group of guide wheels are used to release the warp thread, and a thread hooking mechanism is arranged on the front side of the group of guide wheels, the thread hooking mechanism is used to hook the free end of the warp thread and make the hooked warp thread in the selection direction of the thread selection and inserting mechanism, the thread selection and inserting mechanism includes a moving plate and a group of rapier assemblies which move through the jointing area, the moving track of the moving plates of the two thread selection and inserting mechanisms is X-shaped, and the group of rapier assemblies are used to select the warp thread and form clamping of the warp thread under the action of the tension of the warp thread. The group of thread bearing sets includes a thread arranging rod connected with the rack, a vertical thread arranging groove is arranged in the middle of the thread arranging rod, the thread arranging groove divides the thread arranging rod into a thread blocking segment and a guide segment, the length of the thread blocking segment is greater than that of the guide segment, a cylindrical groove is arranged on the thread blocking segment and the guide segment, a plurality of balls distributed along the vertical length of the cylindrical groove are arranged in the cylindrical groove, part of the spherical surface of the balls is located in the thread arranging groove, a bearing plate is arranged outside the cylindrical groove, a sealing cover is arranged outside the bearing plate, and a retaining rod supporting and rolling with the adjacent balls is arranged on the inner side of the sealing cover.

2. The splicing machine for the production of a wire fabric base fabric of a papermaking wire fabric according to claim 1, characterized in that, The group of net conveying rollers includes a plurality of horizontally inclined rollers, a friction pad is arranged on the roller, an endless belt wheel with a plurality of wheel grooves is arranged at the end of the roller, and adjacent endless belt wheels are driven in cooperation through a belt.

3. The splicing machine for the production of a wire fabric base fabric of a papermaking wire fabric according to claim 2, characterized in that The group of guide wheels includes a support frame, a rotating wheel is arranged on the support frame, and a friction groove for frictionally cooperating with the warp thread is arranged on the wheel surface of the rotating wheel.

4. The splicing machine for the production of the base fabric of the papermaking fabric carpet according to claim 1 or 3, characterized in that, The rack includes two pairs of oppositely distributed side plates, a support square tube is arranged between the side plates, a material feeding port is arranged on the side plate close to the bottom, and the inside of the material feeding port is used to install the group of net conveying rollers.

5. The splicing machine for the production of the base fabric of the papermaking fabric carpet according to claim 1, characterized in that, The group of rapier assemblies includes a rapier plate, an arc groove is arranged on one side of the rapier plate, a core pipe is arranged in the arc groove, the center of the core pipe is towards the front end of the rapier plate, a clamping plate is arranged in the center of the core pipe and rotates with the core pipe, a brake groove is arranged on the rapier plate close to the end of the arc groove, and a brake clamp is arranged in the brake groove, the brake clamp is used to select the warp thread and form clamping of the warp thread with the clamping plate under the action of the tension of the warp thread.

6. The splicing machine for the production of a wire fabric base web of a papermaking wire fabric according to claim 5, characterized in that The brake clamp includes a cam, a clamping plate with a V-shaped structure is arranged on one side of the cam in synchronous connection with the cam, an axle and a torsional spring are arranged between the rotating center of the cam and the clamping plate, and the torsional spring connects the clamping plate and the brake groove.

7. The splicing machine for the production of the base fabric of the papermaking fabric carpet according to claim 1 or 6, characterized in that, The thread selection and inserting mechanism includes a motor and a transmission seat, a transmission assembly in transmission cooperation with the moving plate is arranged at the power output end of the motor, a plurality of index ports are uniformly distributed along the length direction of the moving plate and arranged on the moving plate, the transmission assembly includes a transmission wheel, index teeth in cooperation with the index ports are arranged on the wheel surface of the transmission wheel, and the transmission assembly drives the moving plate to make reciprocating linear motion on the inner top of the transmission seat.

8. The splicing machine for the production of a wire fabric base web of a papermaking wire fabric according to claim 7, characterized in that The transmission seat is provided with an inductive assembly matched with the moving plate, the inductive assembly comprises a fixed hinge provided on the top of the transmission seat, a push plate is rotatably provided on the fixed hinge, a limiting handle is provided on one side of the push plate and is in contact with the top surface of the transmission seat, a protrusion is provided on the bottom surface of the front end of the push plate and is matched with the indexing port, a limiting support is provided on the push plate close to the rear end, a fork is provided on the bottom of the limiting support and is matched with the push plate, an inductor is provided on the rear side of the limiting support and is matched with the end of the push plate through pressure fit.

9. The splicing machine for the production of a wire fabric base web of a papermaking wire fabric according to claim 8, characterized in that The line hooking mechanism comprises a supporting arm, a fixed hook arm is provided on the supporting arm, a movable hook arm is rotatably provided on the fixed hook arm, the length of the movable hook arm is greater than that of the fixed hook arm, a hook groove is provided on the bottom surface of the movable hook arm and is used for hooking the warp, a hinge is provided on the top of the movable hook arm, a telescopic driving arm is provided on the top of the hinge, and the telescopic driving arm is connected with the rack.

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