Edge locking head, edge locking machine tool and edge locking method for crocheted net

Abstract

The invention relates to the technical field of crocheted net machining, in particular to an edge locking head, an edge locking machine tool and an edge locking method for a crocheted net. The overlock head comprises an operation head which comprises a screwing function structure and a bending function structure and is used for firstly screwing and then bending the steel wire head at the edge of the crocheted net; the edge locking machine tool comprises a bending and twisting assembly, the bending and twisting assembly comprises a bending and twisting execution component and an intermittent movement component, the intermittent movement component comprises a screwing intermittent movement component and a bending intermittent movement component, and the screwing intermittent movement component and the bending intermittent movement component execute synchronously or alternately in sequence. The device is used for screwing and bending edge locking operation of the edge steel wire head of the crocheted net. By adopting a mode of firstly screwing and then bending, the netting wire head is ensured to be firmly locked in the netting wire, compared with the traditional bending process, the screwing is firmer, and meanwhile, the problem that the netting wire head is sharp and protruded possibly caused by the traditional edge screwing process is avoided, so that the risk of injury to constructors is reduced, the bent netting wire head is effectively hidden, and the safety of the constructors is ensured. And the construction safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chain link fence processing, and in particular to a chain link fence edge locking head, an edge locking machine tool and an edge locking method. Background Art

[0002] Chain link fence is widely used in various engineering fields, such as railways, highways, construction, gardening, etc., for protection, fencing, isolation and other purposes. Chain link fence is made of metal wire or other materials interwoven, with strong tensile resistance, corrosion resistance and long service life. Therefore, it has become one of the indispensable basic facilities in modern engineering construction. With the continuous expansion of the scope of application, the requirements for the safety and processing accuracy of chain link fence during processing, installation and use are gradually improved. In the processing of chain link fence, the locking process is an indispensable step. The locking operation can effectively fix the edge of the mesh wire, prevent the mesh wire from loosening or sharp wire heads from being exposed, and protect construction workers from injury. The difference in locking process directly affects the use effect and construction safety of the chain link fence. At present, the common locking processes include "bending" and "twisting".

[0003] In the bending and locking process, the mesh wire heads are bent back so that they are firmly locked inside the mesh wire to prevent them from rotating forward or backward and protruding outside the mesh. This process has good safety and can effectively prevent the mesh wire heads from causing harm to construction workers. It is especially suitable for places where the safety of construction workers needs to be ensured. However, the locking effect of the bending process is relatively weak and is easily disturbed by external forces, causing the mesh wire to loosen or fall off. When subjected to strong external impact and pulling, the bent wire heads may be pulled apart, causing the edge structure of the mesh to be destroyed, thereby causing safety hazards to the stability and safety of the mesh.

[0004] In the twisting and locking process, the mesh wire heads are twisted into a twist shape, which can usually provide a stronger locking effect than the bending process. This process can effectively enhance the fixation between the mesh wires, making the overall structure of the mesh wire more stable and not easy to loosen. However, the twisting process has a significant defect, that is, in some places that do not require special protection, such as underground support in coal mines, the sharp wire heads of the mesh wires may still cause puncture injuries to the skin of construction workers, especially in complex construction environments. The sharp wire heads may puncture the skin of construction workers, increasing safety hazards. Summary of the invention

[0005] In order to solve the defect that the existing chain link fence edge locking machine cannot take into account both firmness and safety in edge locking processing and improve processing efficiency, the present invention provides a chain link fence edge locking head, an edge locking machine tool and an edge locking method.

[0006] In the first aspect, the present invention provides a chain link fence with a locking head that adopts the following technical solution: A hemming head for chain link fence, comprising: An operating head, including a screwing function structure and a bending function structure, for first screwing and then bending the wire heads at the edge of the chain link fence; A connecting head, used to connect the transmission mechanism of the hemming machine tool.

[0007] By combining the two processes of screwing and bending, the wire head can not only obtain sufficient screwing fixing force, but also effectively prevent the wire head from being exposed through the bending operation, increasing the firmness of the hemming effect. It has better fixing force than the traditional single bending edge and better safety than the traditional single screwing edge. It can meet the use requirements of higher strength. By adopting the method of first screwing and then bending, it ensures that the wire head is firmly locked inside the wire, avoiding the problem of sharp protrusion of the wire head that may be caused by the traditional screwing process, thus reducing the risk of injury to construction workers. The bent wire head is effectively hidden, greatly improving the construction safety.

[0008] Further, the screwing function structure of the operating head includes a clamping interface, which is divided into two sections and is respectively used to clamp the wire heads that cross and overlap each other at the edge of the chain link fence.

[0009] By setting the clamping interface divided into two sections, it can accurately clamp and fix the two wire heads that cross and overlap each other at the edge of the chain link fence, realizing synchronous clamping and uniform stress during the screwing process, effectively avoiding loosening or deviation caused by single-point screwing, and improving the overall stability and firmness of the hemming. The segmented clamping interface design enables the operating head to accurately position the two crossed wires during screwing, ensuring the same screwing direction and balanced tightening degree, avoiding wire misalignment or slippage, and improving the consistency and controllability of the hemming quality. This clamping interface structure can adapt to chain link fence wires of different specifications and shapes, enhancing the applicable range of the device, facilitating its universality under various wire mesh types and different wire diameters, and improving the practicality of the equipment.

[0010] Further, the clamping interface is strip-shaped and is inclined with respect to the rotation center axis of the operating head, and the two sections divided by the clamping interface are arranged in a corresponding cross manner.

[0011] The correspondingly cross-arranged clamping interface can smoothly guide the wire into the appropriate position, providing more accurate positioning during the screwing process, ensuring that the wire head maintains the same direction and position during the screwing process, and improving the accuracy and reliability of the hemming quality. The inclined correspondingly cross clamping interface increases the natural stability of the wire in the clamping interface, effectively reducing the risk of wire slippage during the screwing process, and ensuring the continuity and safety of the operation process.

[0012] Further, a jaw block is arranged on one side of the clamping interface against the reverse screwing direction, and a wire head limiting edge is arranged on one side of the clamping interface along the screwing direction. Guide inclined surfaces are opened on the upper edges of the jaw block and the wire head limiting edge facing the clamping interface.

[0013] The presence of the jaw blocks ensures that when screwing, it pushes the wire head to rotate along the screwing direction. The jaw blocks arranged on the side opposite to the reverse screwing direction can provide additional clamping force to effectively fix the steel wire and prevent it from loosening or detaching during the screwing process. The wire head limiting edge on the side along the screwing direction provides a physical obstacle to prevent the wire head from falling off during the process of the wire looping back and advancing forward. The setting of the wire head limiting edge ensures that when advancing, the wire head is controlled within the range of the card slot and advances the wire head, further improving the accuracy and stability of the operation. The upper edges of the jaw blocks and the wire head limiting edge facing the card interface are provided with guiding inclined surfaces. These inclined surfaces can make the wire head enter the card interface more smoothly and accurately within a larger range, reducing the friction and resistance during the wire arranging and positioning process. At the same time, the guiding inclined surface of the wire head limiting edge reduces the cross-section, so as to avoid abutting against the hypotenuse of the inner mesh hole when advancing the remaining wire head, reducing or avoiding the deformation and damage of the hypotenuse of the mesh hole.

[0014] Furthermore, the bending function structure of the operating head includes a relief opening, and the relief opening is opened in the middle of the two segments divided by the card interface.

[0015] The design of the relief opening allows for the avoidance of the hook, enabling the locking edge head to advance better and the wire head to be folded back in place. When the operating head performs the bending function, there is sufficient space to accommodate and adjust the steel wire, making the bending process smoother, reducing jamming or wire damage caused by space limitations. The existence of the relief opening helps to combine with the automated system, enabling the bending operation to be automatically completed without manual intervention, improving the automation level and overall efficiency of the production line.

[0016] In a second aspect, a hemming machine for chain link fence provided by the present invention adopts the following technical solutions: A hemming machine for chain link fence uses the above-mentioned hemming head for chain link fence.

[0017] Furthermore, it mainly includes the following functional components: The bending and screwing component includes a bending and screwing execution part and an intermittent motion part. The intermittent motion part includes a screwing intermittent motion part and a bending intermittent motion part. The screwing intermittent motion part and the bending intermittent motion part are executed synchronously or alternately in sequence, and are used for the screwing and bending hemming operation of the wire head at the edge of the chain link fence. The conveying component is used for intermittently conveying the woven chain link fence. The positioning component is used for aligning the wire head at the edge of the chain link fence with the bending and screwing component.

[0018] Through the synchronous or sequential alternating execution of the twisting intermittent motion components and the bending intermittent motion components in the bending assembly, the edge wire heads of the chain link fence can be efficiently twisted and bent and locked. This coordinated movement method optimizes the operation time and improves the overall process effect. The positioning component ensures that the steel wire heads at the edge of the chain link fence are accurately aligned with the bending component. Accurate positioning reduces errors, so that the locking operation can ensure that each steel wire head is accurately processed, thereby improving the quality and consistency of the finished product. The intermittent conveying function of the conveying component enables the woven chain link fence to be processed in a rhythmic manner. This design not only improves operating efficiency, but also reduces the risk of material congestion or damage that may occur in continuous operation, ensuring the smooth operation of the production line. The design of the locking machine integrates automated bending, twisting and locking functions, reducing the need for manual intervention, improving the automation level of the production line, and improving product quality overall.

[0019] Furthermore, the bending and twisting execution component of the bending and twisting assembly includes a locking head, and the locking head includes a screwing function structure and a bending function structure. The bending and twisting assembly is installed at both ends of the frame and is symmetrically arranged. The intermittent motion component of the bending and twisting assembly includes a rotating power component and a direct driving force component. The rotating power component is connected to the locking head and drives the locking head to rotate. The direct driving force component is connected to the rotating power component and the locking head through a crank slider mechanism and is used to push the rotating power component and the locking head to move forward. The travel state of the direct driving force component includes state one for primary travel, state two for secondary travel, and state three for return travel.

[0020] The screwing function structure and the bending function structure of the locking head are used in combination to ensure that the screwing and bending operations of the steel wire are accurate. Through this comprehensive function, the screwing, bending and locking processes can be realized simultaneously on the same equipment, which improves the production efficiency and the quality of the locking product. The combined use of the rotary power component and the direct-drive power component enables the locking head to perform complex movements. The rotary power component drives the locking head to rotate, while the direct-drive power component drives the rotary power component and the locking head to move forward through the crank slider mechanism. This flexible transmission design allows the locking head to switch quickly between different functions, which improves the flexibility and response speed of the operation. The comprehensive power and transmission design enables the entire bending and twisting assembly to be seamlessly integrated into the automated production line, thereby improving the level of automation.

[0021] Furthermore, the conveying assembly includes a power roller and a positioning tooth, and the power roller and the positioning tooth are respectively arranged on both sides of the frame, and the power roller drives the chain link fence to be conveyed under the drive of the conveying motor, and the positioning tooth performs intermittent positioning of the chain link fence per unit length under the drive of the intermittent motor, and the positioning assembly includes a pressure plate and a pull hook, and the pressure plate and the pull hook are installed at the bending operation position close to the bending assembly, and the pressure plate fixes the vertical height position of the chain link fence by a reciprocating holding action, and the pull hook fixes the horizontal transverse position of the chain link fence by a reciprocating tightening action.

[0022] The power rollers in the conveying assembly are driven by the conveying motor to ensure that the chain link fence can be conveyed continuously and smoothly. The positioning teeth are driven by the intermittent motor to achieve intermittent positioning per unit length, ensuring that each section of the chain link fence can be accurately positioned before locking the edge. This design improves the accuracy of the locking operation, ensures that each wire head is in the optimal processing position, and reduces operational deviations caused by inaccurate positioning. The design of the pressure plate and the hook ensures that the chain link fence can remain stable during the bending and twisting operation. The precise positioning and stable fixing mechanism enable each chain link fence product to be processed with consistent quality.

[0023] In a third aspect, the present invention provides a chain link fence edge locking method using the following technical solutions: A chain link fence edge locking method, using the chain link fence edge locking head and the chain link fence edge locking machine tool, includes the following processing steps: S1. Use the conveying component and the positioning component to convey and position the edge of the woven chain link fence to the bending component; S2. The bending and twisting assembly bends and twists the steel wire heads at the edge of the chain link fence, specifically including: S2.1. The straight driving force component pushes the locking head to move forward once, and the crossed wire heads first dock with the card interface; S2.2, the rotating power component drives the locking head to rotate, and the cross wire head clamped in the clamping interface is screwed under the rotation and push of the jaw block. After the rotating power component rotates a set number of times, it continues to rotate and screw, and then controls the locking head to rotate, keeps the wire head aligned with the inner wire and keeps the clearance port aligned with the hook, and stops rotating; S2.3, the straight driving force member pushes the locking head to move twice, the twisted part of the steel wire is inserted into the clearance opening, and the untwisted part of the steel wire is bent under the push of the clamping interface to form an inverted V-shaped structure facing the chain link fence, keeping the steel wire head close to the inner steel wire; S2.4, the straight driving force member pulls the locking head to return; S3. Repeat S1 and S2 alternately.

[0024] The entire bending and locking process is completed by a hemming machine tool. With precise conveying and positioning components, full-process automation is achieved. From the conveying and positioning of the wire mesh to the bending and locking, no manual intervention is required, significantly reducing the labor intensity and improving the operation convenience. Through the continuous actions of steps S2.1 to S2.3, the wire head is further bent after being screwed to form an inward-facing inverted V-shaped structure. This structure is both aesthetically pleasing and has strong mechanical biting force, effectively preventing the loosening of the edges of the chain-link fence, improving the structural strength and durability of the finished product. With the cooperation of the numerical control system for automatic scheduling and control, it can operate continuously for a long time, significantly enhancing the batch production capacity and meeting the requirements of industrial production for efficiency and productivity.

[0025] In summary, the present invention has the following beneficial technical effects: 1. Through the collaborative work of the conveying component, positioning component, and numerical control system, the automatic conveying, positioning, and hemming processing of the chain-link fence are realized, significantly reducing manual operations and interventions, and improving the overall production automation level.

[0026] 2. The power roller and intermittent positioning teeth ensure the stable conveying and precise positioning of the chain-link fence per unit length; the double fixing mechanism of the pressing plate and the hook stabilizes the position of the mesh body in the vertical and horizontal dimensions, effectively preventing displacement and deviation during the processing.

[0027] 3. The bending and screwing head clamps, screws, and bends the wire through step-by-step actions, finally forming a hemmed edge with an inverted V-shaped structure, enhancing the edge tensile strength and overall structural stability.

[0028] 4. The processing action rhythm is clear and highly coordinated, from the wire alignment to the forming in one go, improving the processing beat, reducing action interference, and ensuring processing efficiency and consistency.

[0029] 5. The equipment is applicable to various specifications of chain-link fences, with good versatility and adjustment flexibility, meeting diverse production needs and reducing equipment replacement and switching costs.

[0030] 6. The precise docking and hemming structure ensure processing consistency, avoiding common problems in traditional manual work such as dimensional errors, loose hemming, and wire breakage, significantly reducing the scrap rate and improving the overall yield rate.

[0031] 7. The automatic alternation and continuous cycle of operations S1 and S2 can be realized. Combined with the programming control of the hemming machine tool, the equipment has the ability to operate for a long time, adapting to the industrial large-batch production scenario.

[0032] 8. The structure is modular, facilitating maintenance and fault diagnosis; the processing path is clear and easy to monitor, further improving the use convenience and stable operation time of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the hemming head of the present invention; Figure 2 for Figure 1 Another perspective structural diagram of; Figure 3 It is a schematic diagram of the structure of the edge locking machine tool of the present invention; Figure 4 This is a schematic diagram of the locking head of the present invention pushing the butt-jointed steel wire head; Figure 5 This is a schematic diagram of the processing of twisting a steel wire head with a locking head according to the present invention; Figure 6 It is a schematic diagram of the processing of the bent steel wire head of the locking head of the present invention.

[0034] Description of reference numerals: 1. Operating head, 11. Card interface, 12. Jaw block, 13. Thread head limit rib, 14. Guide slope, 15. Make way port, 2. Connector; 10. Locking head, 20. Frame, 100. Bending and twisting assembly, 101. Rotating power component, 102. Direct driving power component, 200. Conveying assembly, 201. Power roller, 202. Positioning gear, 203. Conveying motor, 204. Intermittent motor, 300. Positioning assembly, 301. Press plate, 302. Draw hook. DETAILED DESCRIPTION

[0035] The following is combined with Figures 1-6 The present invention is described in further detail. Example 1

[0036] The embodiment of the present invention discloses a chain link fence edge locking head, edge locking machine tool and edge locking method, referring to Figure 1 ,include: The operating head 1 includes a twisting function structure and a bending function structure, and is used for twisting and then bending the steel wire head at the edge of the chain link fence; The connector 2 is used to connect the transmission mechanism of the overlocking machine.

[0037] The present invention retains and possesses both the traditional bending process performance and the twisting process performance, and can program and control the processing type according to specific processing requirements and processing efficiency.

[0038] Precision cutting of metal materials using cutting technology, including laser cutting or water jet cutting technology, to ensure the dimensional accuracy of the hemming head and machine tool components.

[0039] Use precision welding or bolting methods to firmly connect the various components to ensure structural stability. Perform necessary calibration and adjustments after assembly to ensure accurate docking between the operating head and the machine tool transmission mechanism.

[0040] Preferably use steel with wear resistance and high strength to ensure durability and reliability during long-term use, and perform chromium plating or nickel plating treatment to improve corrosion resistance.

[0041] Use sensors and induction plates in combination with mechanical principle positioning technology and devices, specifically including using laser positioning or mechanical positioning devices to ensure that the hemming head and the machine tool are accurately installed in the specified position, thereby ensuring processing accuracy. Adopt adjustable fixed jigs or brackets for easy installation and disassembly, and allow adjustment in different operating environments.

[0042] Regularly check the wear of the screwing and bending mechanisms, replace them if necessary, and lubricate the transmission parts to ensure the smooth operation of the operating head and the connecting head.

[0043] Adopt a programmable logic controller (PLC) for automatic control, which supports multiple operation modes and parameter settings to adapt to different processing requirements. Embodiment 2

[0044] Based on Embodiment 1, further add the following description: Refer to Figure 1 and Figure 2 , the screwing function structure of the operating head 1 includes a clamping interface 11, which is divided into two sections and is respectively used for clamping two wire heads that cross and overlap at the edge of the chain-link fence.

[0045] Refer to Figure 1 and Figure 2 , the clamping interface 11 is strip-shaped and is inclined with respect to the rotation center axis of the operating head 1, and the two sections divided by the clamping interface 11 are arranged in a corresponding cross manner.

[0046] Refer to Figure 1 and Figure 2 , a clamping jaw block 12 is arranged on one side of the clamping interface 11 in the reverse screwing direction, and a wire head limiting edge 13 is arranged on one side of the clamping interface 11 in the forward screwing direction. The upper edges of the clamping jaw block 12 and the wire head limiting edge 13 facing the clamping interface 11 are provided with guiding inclined surfaces 14.

[0047] Refer to Figure 1 and Figure 2 , the bending function structure of the operating head 1 includes a relief opening 15, which is opened in the middle of the two sections divided by the clamping interface 11.

[0048] As mentioned above, use laser cutting or CNC machining technology to ensure accuracy.

[0049] If it is necessary to increase the material thickness or strength, surfacing technology can be used to increase the material thickness at key parts.

[0050] After cutting and surfacing welding, precisely grind the edges of the clamping interface, jaw block, and wire head limiting edge to remove burrs and ensure a smooth surface, which helps improve the fluency of operation.

[0051] Use a laser rangefinder or precise measuring tool to measure the machined components to ensure that the dimensional accuracy meets the design requirements.

[0052] Regularly use measuring tools to check the wear of components such as the clamping interface, jaw block, and wire head limiting edge. You can use a vernier caliper or other precision instruments to measure key parts to judge the degree of wear. Example 3

[0053] An edge locking head, edge locking machine tool and edge locking method for chain link fence are disclosed in an embodiment of the present invention. Refer to Figure 3 , and use an edge locking head for chain link fence as described in Embodiment 1 and Embodiment 2. Specifically, it includes the following functional components: The bending and screwing component 100 includes a bending and screwing execution part and an intermittent motion part. The intermittent motion part includes a screwing intermittent motion part and a bending intermittent motion part. The screwing intermittent motion part and the bending intermittent motion part are executed synchronously or alternately in sequence, and are used for the screwing and bending edge locking operation of the steel wire head at the edge of the chain link fence. The conveying component 200 is used for intermittently conveying the woven chain link fence. The positioning component 300 is used to align the steel wire head at the edge of the chain link fence with the bending and screwing component 100.

[0054] Install the edge locking machine tool on a stable and horizontal foundation platform, and use a level to calibrate the machine tool body to ensure that all components are in the designed horizontal state and prevent operation deviation.

[0055] Connect to a stable power supply and connect it to the power distribution cabinet. Check that the wiring of the control circuit and the PLC control module is correct to avoid misoperation.

[0056] Mechanically connect the edge locking head 10 for chain link fence to the working position of the edge locking machine tool according to the designed hole positions. It is recommended to use high-strength bolts. The conveying component 200 and the positioning component 300 should be pre-adjusted and locked according to the size of the chain link fence. Check whether the positions of the bending and screwing component 100 and the positioning component 300 are aligned. If necessary, perform position fine-tuning through the fine-tuning structure.

[0057] Inject lubricating oil into all moving axes, transmission sprockets and rotating joints, and manually rotate the key components to confirm that there is no jamming or abnormal noise and ensure smooth operation. Example 4

[0058] Further add a description on the basis of Example 3: Refer to Figure 3The bending and twisting executing part of the bending and twisting assembly 100 includes a locking head 10, and the locking head 10 includes a screwing function structure and a bending function structure. The bending and twisting assembly 100 is installed at both ends of the frame 20 and is symmetrically arranged; The intermittent motion parts of the bending and twisting assembly 100 include a rotating power component 101 and a direct driving force component 102. The rotating power component 101 is connected to the locking head 10 and drives the locking head 10 to rotate. The direct driving force component 102 is connected to the rotating power component 101 and the locking head 10 through a crank slider mechanism and is used to push the rotating power component 101 and the locking head 10 to move forward. The travel states of the direct driving force component 102 include state one for primary travel, state two for secondary travel, and state three for return travel.

[0059] Reference Figure 3 The conveying assembly 200 includes a power roller 201 and a positioning tooth 202, which are respectively arranged on both sides of the frame 20. The power roller 201 drives the chain link fence to be conveyed under the drive of the conveying motor 203, and the positioning tooth 202 intermittently positions the chain link fence per unit length under the drive of the intermittent motor 204; The positioning assembly 300 includes a pressure plate 301 and a pull hook 302, which are installed near the bending operation of the bending assembly 100. The pressure plate 301 fixes the vertical height position of the chain link fence through a reciprocating holding action, and the pull hook 302 fixes the horizontal position of the chain link fence through a reciprocating tightening action.

[0060] The locking head 10 for the chain link fence should be designed as a replaceable structural part to facilitate adaptation to different mesh holes or wire diameters.

[0061] The pressing plate 301 is used to prevent the mesh from flipping over as the hook 302 is rotated, and the hook 302 is used to fix the intersection inside the intersection of the mesh wire heads at the edge of the hook flower net. One is to prevent the mesh from flipping over as the hook flower is rotated, and the other is to limit the extension of the hook flower to the outside of the intersection instead of extending to the inside of the mesh, so as not to destroy the mesh structure of the mesh, thereby achieving a uniform and tight hook flower effect. Example 5

[0062] The embodiment of the present invention discloses a method for locking the edge of a chain link fence, referring to Figures 1-6 , using the chain link fence locking head as described in Example 1 and Example 2 and the chain link fence locking machine tool as described in Example 3 and Example 4, including the following processing steps: S1, using the conveying assembly 200 and the positioning assembly 300 to convey and position the edge of the woven chain link fence to the bending assembly 100; S2, the bending and twisting assembly 100 performs a bending and twisting operation on the steel wire heads at the edge of the chain link fence, specifically comprising: S2.1, the straight driving force member 102 pushes the locking head 10 to move once, and the crossed wire heads first dock with the card interface 11; S2.2, the rotating power component 101 drives the locking head 10 to rotate, and the cross wire head clamped in the clamping interface 11 is screwed under the rotation and push of the jaw block 12. The rotating power component 101 rotates a set number of times and then over-tightens. After over-tightening for a period of time, the locking head 10 is controlled to rotate, the wire head is kept aligned with the inner wire, the clearance port 15 is kept aligned with the hook 302, and the rotation is stopped; The number of rotations and the reverse rotation angle of the rotating power component 101 should be precisely set according to the diameter of the steel wire to ensure that the twisting strength is appropriate. The twisting degree is 180° or 180°*n times plus the angle degree of the steel wire strength rebound amount. The degree is adjusted accordingly according to the rebound amount of the steel wire strength, generally 0°-180°; S2.3, the straight driving force member 102 pushes the locking head 10 to move twice, the twisted part of the steel wire is inserted into the clearance opening 15, and the untwisted part of the steel wire is pushed by the clamping interface 11 to bend to form an inverted V-shaped structure toward the chain link fence, keeping the steel wire head close to the inner steel wire; When the wire head is bent to form an inverted V-shaped structure, the driving force of the card interface 11 should be adjustable to cope with the change of the rigidity of different wires, ensure that the bending angle is appropriate, and adjust the gap between the hook and the locking head and the first stroke stop time angle to control the second stroke. The specific operation includes: adjusting the sensor sensing plate forward in the direction of rotation will increase the second push stroke, and adjusting the sensor sensing plate backward in the reverse direction of rotation will reduce the second push stroke. In other words, the remaining stroke of the first stroke stop determines the push distance of the second stroke; When the sensor plate is adjusted, the distance between the draw hook and the locking head should be adjusted when the remaining stroke changes. If the distance between the two is too close, the card interface 11 is pushed too much in the first stroke, and the draw hook is embedded in the card interface 11 in advance, resulting in failure to screw normally and damage to the machine. If the distance between the two is too far, the card interface 11 will be too far away from the hook and the wire head during the first stroke. 1. The wire head cannot be well embedded in the card interface, and the twisting head cannot normally twist the wire head. 2. Even if the wire head is partially embedded in the twisting head, the twisting density of the wire head will be sparse and not compact. The length of the twisted part is increased but not firm, and the remaining wire head is short enough to bend back and overlap to fit the mesh wire. It may tilt to one side during the second advancement, resulting in poor locking effect and unqualified products. S2.4, the straight driving force member 102 pulls the locking head 10 to return; S3. Repeat S1 and S2 alternately.

[0063] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A hemming head for a chain link fence, characterized in that, include: The operating head (1) comprises a twisting function structure and a bending function structure, and is used for twisting and then bending the steel wire head at the edge of the chain link fence; The connector (2) is used to connect the transmission mechanism of the edge locking machine.

2. The edge-locking head for chain-link fence according to claim 1, characterized in that: The screwing function structure of the operating head (1) comprises a clamping interface (11), wherein the clamping interface (11) is divided into two sections and is respectively used for clamping the steel wire heads that are cross-jointed and overlapped at the edges of the chain link fence.

3. The edge-locking head for chain link fence according to claim 2, wherein: The card interface (11) is in the shape of a bar and is arranged obliquely relative to the central axis of rotation of the operating head (1); the two sections into which the card interface (11) is divided are arranged correspondingly and crosswise.

4. The edge-locking head for chain-link fence according to claim 3, wherein: A jaw block (12) is provided on one side of the card interface (11) facing the direction opposite to the screwing direction, and a thread head limiting rib (13) is provided on one side of the card interface (11) facing the screwing direction. A guiding inclined surface (14) is formed on the upper edges of the jaw block (12) and the thread head limiting rib (13) facing the card interface (11).

5. A hemming head for a chain link fence according to claim 1, characterized in that: The bending functional structure of the operating head (1) comprises a clearance opening (15), wherein the clearance opening (15) is opened in the middle of the two sections divided by the card interface (11).

6. A hemming machine for chain-link fencing, characterized in that: Use a chain link fence locking head as described in any one of claims 1-5.

7. A hemming machine for chain link fence, characterized in that, include: A twisting assembly (100) comprises a twisting execution component and an intermittent motion component, wherein the intermittent motion component comprises a twisting intermittent motion component and a bending intermittent motion component, wherein the twisting intermittent motion component and the bending intermittent motion component are executed synchronously or sequentially and alternately, and are used for twisting and bending the edge of the steel wire head at the edge of the chain link fence; A conveying assembly (200) is used for intermittently conveying the woven chain link fence; The positioning assembly (300) is used to align the inner side of the steel wire heads at the edge of the chain link fence with the bending and twisting assembly (100).

8. A hemming machine for chain link fence, characterized in that: The bending execution component of the bending assembly (100) comprises a locking head (10), the locking head (10) comprises a screwing function structure and a bending function structure, and the bending assembly (100) is mounted at both ends of the frame (20) and is symmetrically arranged; The intermittent motion component of the bending and twisting assembly (100) comprises a rotating power component (101) and a direct driving force component (102); the rotating power component (101) is transmission-connected to the locking head (10) and drives the locking head (10) to rotate; the direct driving force component (102) is transmission-connected to the rotating power component (101) and the locking head (10) through a crank slider mechanism and is used to drive the rotating power component (101) and the locking head (10) to move forward; and the travel states of the direct driving force component (102) include a state one for primary travel, a state two for secondary travel, and a state three for return travel.

9. The edge-locking machine tool for chain-link fence according to claim 6, wherein: The conveying assembly (200) comprises a power roller (201) and a positioning tooth (202), wherein the power roller (201) and the positioning tooth (202) are respectively arranged on both sides of the frame (20), the power roller (201) drives the chain link fence to be conveyed under the drive of a conveying motor (203), and the positioning tooth (202) performs intermittent positioning of the chain link fence per unit length under the drive of an intermittent motor (204); The positioning assembly (300) comprises a pressing plate (301) and a pulling hook (302), wherein the pressing plate (301) and the pulling hook (302) are installed near the bending operation position of the bending assembly (100), the pressing plate (301) fixes the vertical height position of the chain link fence through a reciprocating holding action, and the pulling hook (302) fixes the horizontal transverse position of the chain link fence through a reciprocating tightening action.

10. A method for hemming a chain-link fence, characterized in that, Using a chain link fence locking head as described in any one of claims 1 to 5 and a chain link fence locking machine tool as described in any one of claims 6 to 9 includes the following processing steps: S1, using a conveying assembly (200) and a positioning assembly (300) to convey and position the edge of the woven chain link fence to a bending assembly (100); S2. The bending and twisting assembly (100) performs a bending and twisting operation on the steel wire heads at the edge of the chain link fence, specifically comprising: S2.1, the straight driving force member (102) pushes the locking head (10) to move forward once, and the crossed steel wire heads first dock with the card interface (11); S2.2, the rotating power component (101) drives the locking head (10) to rotate, and the cross wire head clamped in the clamping interface (11) is screwed under the rotation and push of the jaw block (12). After the rotating power component (101) rotates a set number of times, it continues to rotate and screw, and then controls the locking head (10) to rotate, keep the wire head aligned with the inner wire and keep the clearance opening (15) aligned with the hook (302), and stop rotating; S2.3, the straight driving force member (102) pushes the locking head (10) to move a second time, the twisted part of the steel wire is inserted into the clearance opening (15), and the untwisted part of the steel wire is bent under the push of the clamping interface (11) to form an inverted V-shaped structure toward the chain link fence, so that the steel wire head is kept close to the inner steel wire; S2.4, the straight driving force member (102) pulls the locking head (10) to return; S3. Repeat S1 and S2 alternately.

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