Semi-automatic quick replacement device for lower protective fluted disc of head twisting machine

Abstract

The invention relates to the technical field of lower protective fluted disc installation, in particular to a semi-automatic quick replacement device for a lower protective fluted disc of a head twisting machine. The device comprises a supporting plate, a pressing part, a lifting plate, an L-shaped supporting block and an automatic locking head. A through mounting hole is formed in the middle of the supporting plate; a plurality of pressing parts are mounted on the outer ring of the hole; the lifting plate is movably arranged on the machine body frame and located above the supporting plate. The L-shaped supporting block is arranged on the supporting plate and used for supporting the lower fluted disc and is matched with the lifting plate to lift out the whole lower fluted disc, and a limiting rod protruding outwards is arranged at the top end of the L-shaped supporting block; the lifting plate is provided with an automatic locking head matched with the limiting rod. When the device works, all the components cooperate with one another, complex fixing pieces do not need to be manually operated one by one, the replacement steps of the lower protective fluted disc can be simplified, tedious operation in the replacement process is reduced, manual dependence is effectively reduced, the replacement time of the lower protective fluted disc is shortened, the replacement efficiency is improved to a certain degree, it is guaranteed that the head twisting machine rapidly recovers work, and the shutdown influence of a production line is reduced.

Description

Technical Field

[0001] This invention relates to the field of lower gear plate installation technology, and in particular to a semi-automatic quick replacement device for the lower gear plate of a torsion head machine. Background Technology

[0002] In the production and processing of motor rotor wires in new energy vehicles, a twisting operation is required to ensure the wire harness meets assembly requirements. The lower gear guard, as a core component that directly contacts the workpiece and provides support and positioning, is prone to surface damage and tooth deformation due to workpiece friction, impact, or material abrasion. Regular disassembly and replacement are necessary to ensure processing accuracy and equipment operational stability. However, current industry methods for replacing the lower gear guard in twisting machines still have several technical shortcomings, as detailed below: 1. The replacement operation relies on manual labor, which is inefficient; Currently, most lower gear guards use traditional fixing structures such as bolts and clips. When replacing them, operators need to use tools such as wrenches and screwdrivers to disassemble the fasteners one by one, then manually align them in the installation position and retighten them. This manual replacement method not only consumes a lot of labor costs, but also causes the turning machine to be shut down for a long time, which seriously affects the continuous operation efficiency of the production line.

[0003] 2. The clamping structure is complex to operate and lacks stability; To ensure that the lower gear plate does not shift during operation, existing devices mostly use multiple sets of independent clamping bolts or manual lever clamping mechanisms. When replacing the lower gear plate, it is necessary to loosen / tighten multiple sets of clamping bolts one by one, or repeatedly operate multiple manual levers, which is cumbersome and time-consuming. At the same time, manual operation makes it difficult to ensure that the clamping force of each clamping structure is uniform.

[0004] 3. Lacks convenient support and locking structures, resulting in low safety during replacement; The lower gear guard plate usually has a certain weight. During the current replacement process, the operator needs to manually lift the lower gear guard plate for installation and positioning. This is not only labor-intensive, but also poses a safety hazard of the lower gear guard plate slipping and injuring personnel or damaging equipment. In addition, there is no temporary locking structure during the installation process. The lower gear guard plate is prone to tipping over or shifting before it is fully tightened, further increasing the operational risk. At the same time, additional personnel need to be arranged to assist in stabilizing the lower gear guard plate, resulting in a waste of manpower.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a semi-automatic quick-change device for the lower gear plate of a torsion head machine, making it more valuable for industrial use. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the purpose of this invention is to provide a semi-automatic quick-change device for the lower gear plate of a torsion head machine.

[0007] The present invention discloses a semi-automatic quick-change device for the lower gear guard plate of a torsion head machine, comprising a support plate, a through mounting hole in the middle of the support plate, a plurality of clamping parts arranged around the outer ring of the mounting hole, a movable lifting plate arranged on the machine frame above the support plate, a plurality of "L"-shaped support blocks supporting the lower gear guard plate placed on the support plate, a limiting rod protruding outward at the top of the support block, and an automatic locking head cooperating with the limiting rod on the lifting plate.

[0008] The semi-automatic quick-change device for the lower gear guard disc of this torsion machine has a through mounting hole in the middle of the support plate. Multiple clamping parts are installed around the outer ring of the mounting hole. The lifting plate is set on the machine frame and is movable and located above the support plate. An "L"-shaped support block is placed on the support plate to support the lower gear guard disc. The top of the block has an outwardly protruding limit rod. The lifting plate is equipped with an automatic locking head that cooperates with the limit rod. Through the coordinated action of various components, this device can more conveniently complete the replacement operation of the lower gear guard disc, reduce the cumbersome steps in the replacement process, and improve the efficiency of the lower gear guard disc replacement to a certain extent.

[0009] Furthermore, each clamping part includes a mounting plate 1 fixedly connected to the bottom of the support plate. The mounting plate 1 has a through hole in the middle. A clamping cylinder is fixed below the mounting plate 1. A horizontal bar is fixed on the telescopic rod of the clamping cylinder. One end of the horizontal bar is movably connected to a connecting rod 1 via a shaft. The other end of the connecting rod 1 is movably connected to a vertically arranged connecting rod 2 via a shaft. The lower end of the connecting rod 2 is movably connected to a mounting seat on the mounting plate 1 via a shaft. The upper end of the connecting rod 2 is movably connected to the middle of the pressure head via a shaft. The tail end of the pressure head is movably connected to one end of a connecting rod 3 via a shaft. The other end of the connecting rod 3 is movably connected to the other end of the horizontal bar via a shaft.

[0010] Each clamping unit includes a mounting plate 1, a clamping cylinder, a crossbar, a connecting rod 1, a connecting rod 2, a pressure head, and a connecting rod 3. The mounting plate 1 is fixed to the bottom of the support plate and has a through hole in the middle. The clamping cylinder is fixed below the mounting plate 1, and its telescopic rod is connected to a horizontal crossbar. One end of the crossbar is connected to the connecting rod 1 via a shaft, and the other end of the connecting rod 1 is connected to the vertical connecting rod 2 via a shaft. The lower end of the connecting rod 2 is movably connected to the mounting seat on the mounting plate 1 via a shaft, and the upper end of the connecting rod 2 is also connected to the middle of the pressure head via a shaft. At the same time, the tail end of the pressure head is connected to one end of the connecting rod 3 via a shaft, and the other end of the connecting rod 3 is movably connected to the other end of the crossbar via a shaft. With the linkage of each component, this clamping unit can stably achieve the clamping action on the lower gear guard plate, preventing the lower gear guard plate from shifting during operation and ensuring the stability of the turning machine operation.

[0011] Furthermore, the surface of the support plate has a concave groove, and the lower end of the support block is inserted into the groove. The length of the groove is greater than the length of the bottom of the support block.

[0012] The support plate has a recessed groove on its surface. The lower end of the support block is fitted into the groove, and the length of the groove is longer than the length of the bottom of the support block. This structural design allows the support block to be flexibly adjusted in the groove, making it easy to adapt to the support requirements according to the actual size of the lower gear plate. At the same time, the groove can also play a certain limiting and guiding role for the support block, preventing the support block from shifting during the support process and ensuring the stability of the lower gear plate when it is placed.

[0013] Furthermore, the automatic locking head includes a second mounting plate fixedly connected to the lower part of the support plate. The surface of the second mounting plate has an outwardly protruding right-angled stop bar. A rotatable swing block is movably mounted on the second mounting plate via a shaft. One end of the upper edge of the swing block can contact the side wall of the stop bar, and the other end of the upper edge of the swing block is connected to the stop bar via a shaft and a tension spring. In the vertical state, there is a gap between the swing block and the stop bar for the limit rod to pass through.

[0014] The automatic locking head includes a mounting plate two fixed to the bottom of the support plate, a right-angled protruding stop bar, a rotatable swing block, and a tension spring. The surface of the mounting plate two has an outwardly protruding right-angled stop bar. The swing block is movably mounted on the mounting plate two via a shaft and is rotatable. One end of its upper end can contact the side wall of the stop bar, and the other end is connected to the stop bar via the shaft and tension spring. When the swing block is in a vertical state, a gap is formed between it and the stop bar for the limiting rod to pass through. Through the cooperation of various components, the automatic locking head can quickly lock after the limiting rod passes through the gap, preventing the limiting rod from accidentally disengaging, thereby stabilizing and fixing the support block, providing reliable protection for the installation of the lower gear plate, and reducing positional displacement problems during replacement.

[0015] Furthermore, the surface of the support plate is equipped with mirror-mounted positioning blocks, the inner sidewalls of which can contact the outer edge of the lower gear plate.

[0016] The support plate surface is equipped with mirror-shaped positioning blocks, the inner sidewalls of which can contact the outer edge of the lower gear plate. These mirror-shaped positioning blocks can assist in positioning the lower gear plate from both sides, quickly guiding it to the correct installation position and preventing it from shifting during placement. This lays a good foundation for subsequent pressing and fixing operations, improving the alignment efficiency and accuracy when replacing the lower gear plate.

[0017] Furthermore, the inner side of the positioning block has a protruding positioning pin, which can mate with the positioning hole at the lower end of the lower gear plate.

[0018] The inner side of the positioning block is provided with a protruding positioning pin, which can cooperate with the positioning hole at the lower end of the lower gear plate. This cooperation structure can further accurately define the installation position of the lower gear plate, and prevent the lower gear plate from rotating circumferentially or shifting laterally during subsequent operations or replacements. This makes the positioning of the lower gear plate more stable and accurate, and provides a guarantee for the stable processing of the turning machine.

[0019] By means of the above-described solution, the present invention has at least the following advantages: Firstly, it significantly improves replacement efficiency and reduces reliance on manual labor and downtime costs. Compared to traditional methods of bolt fastening and clip engagement that require manual disassembly / installation of fasteners, this device simplifies the operation process through a semi-automatic structure: On one hand, the clamping unit, driven by a clamping cylinder, automatically clamps and releases the lower gear plate, eliminating the need for manual tightening of bolts or operation of levers; on the other hand, the lifting plate, in conjunction with the automatic locking head, quickly locks and unlocks the support block, reducing manual alignment and adjustment time. The overall design significantly shortens the lower gear plate replacement cycle, reduces downtime of the turning machine, minimizes manpower input, and effectively improves the continuous operation efficiency of the production line.

[0020] Secondly, the clamping structure is optimized to ensure clamping stability and ease of operation. Existing multi-unit independent clamping structures suffer from cumbersome operation and uneven clamping force. However, the clamping part of this device adopts a "cylinder-crossbar-multi-link" linkage design. A single clamping cylinder can drive the pressure head to move stably, and multiple clamping parts can be controlled synchronously to ensure uniform clamping force at all contact points of the lower gear plate. This avoids displacement of the lower gear plate due to insufficient local clamping force or damage to components due to excessive pressure. At the same time, cylinder drive replaces manual operation, simplifies the clamping process, reduces the labor intensity of operators, and further improves operational safety and reliability.

[0021] Thirdly, the improved support and locking system significantly enhances replacement safety and positioning accuracy. Addressing the high risks of manual lifting and lack of temporary locking in traditional replacement methods, this device employs a multi-structure collaborative solution: the "L"-shaped support block pre-supports the lower gear plate, eliminating the need for continuous manual lifting and reducing the risk of slippage and injury; the automatic locking head, utilizing a swing block and tension spring, quickly locks after the limit rod passes through the gap, providing temporary fixation for the support block and preventing the lower gear plate from tipping over or shifting before it is fully secured, thus reducing the need for manual assistance; furthermore, the mirrored positioning block and positioning pin work together to quickly guide the lower gear plate into precise alignment, and the engagement of the positioning pin with the positioning hole on the lower gear plate prevents circumferential rotation, significantly improving installation positioning accuracy, reducing rework due to alignment deviations, and further ensuring replacement quality and efficiency.

[0022] Fourth, the device enhances adaptability and meets the replacement needs of various sizes of lower gear guards. The concave groove design on the surface of the support plate allows the support block to be flexibly adjusted along the groove, enabling it to be installed to fit the support requirements of lower gear guards of different sizes without the need to design a special support structure for specific sizes of lower gear guards. At the same time, the distribution of multiple clamping parts and the adjustable positioning method can also adapt to the clamping and positioning of lower gear guards of different diameters and thicknesses, significantly reducing the cost of special tooling, improving the versatility of the device in various models of toggle machine production scenarios, and enhancing the production flexibility of enterprises.

[0023] In summary, this device effectively addresses the core pain points of existing lower gear plate replacement through a synergistic design of semi-automatic drive, stable clamping, safety support, and precise positioning. While improving replacement efficiency, ensuring operational safety, and enhancing adaptability, it also reduces labor and equipment costs, providing strong support for the stable operation of the toggle machine production line and possessing high industrial practical value.

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the pressing part of the present invention; Figure 3 This is the invention Figure 1 A magnified view of a portion of the image; Figure 4 This is a schematic diagram of the installation of the automatic locking head of the present invention; Figure 5 This is a schematic diagram of the structure of the automatic locking head of the present invention; In the diagram: 1. Support plate, 2. Pressing part, 3. Lifting plate, 4. Support block, 5. Limiting rod, 6. Automatic locking head, 7. Mounting plate one, 8. Pressing cylinder, 9. Crossbar, 10. Connecting rod one, 11. Connecting rod two, 12. Pressing head, 13. Connecting rod three, 14. Slide groove, 15. Mounting plate two, 16. Stop bar, 17. Swing block, 18. Tension spring, 19. Positioning block, 20. Positioning pin. Detailed Implementation

[0027] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0028] See Figure 1When the semi-automatic quick-change device for the lower gear guard plate of the toggle machine is working, the lower gear guard plate to be replaced is first placed on the support plate 1. The mounting hole through the middle of the support plate 1 provides installation space for the lower gear guard plate. At the same time, multiple "L" shapes on the support plate 1... The support block 4 supports the lower gear plate. Then, the lifting plate 3, mounted on the machine frame, is adjusted to move downwards. The automatic locking head 6 on the lifting plate 3 engages with the outward-protruding limiting rod 5 at the top of the support block 4, locking and fixing the support block 4 to ensure the lower gear plate's stable position on the support plate 1. Next, multiple clamping parts 2 around the mounting hole are activated to clamp the lower gear plate, completing its installation. When the lower gear plate needs to be removed, first, the clamping parts 2 are released, and then the lifting plate 3 is adjusted upwards to disengage the automatic locking head 6 from the limiting rod 5. The old lower gear plate can then be removed, and the process repeated after replacing it with a new one. This setup enables semi-automatic and rapid replacement of the lower gear plate, eliminating the need for manual disassembly or installation of fasteners, significantly reducing manual operation steps, shortening the replacement time, and reducing downtime of the turning machine. Simultaneously, the "L" shape... The cooperation between the support block 4 and the automatic locking head 6 ensures the stability of the lower gear plate during the replacement process, preventing it from slipping or shifting. The multiple clamping parts 2 ensure the stability of the lower gear plate after installation, reducing the problem of the lower gear plate loosening affecting the machining accuracy of the turning machine.

[0029] See Figure 2When it is necessary to press and fix the lower gear plate, the mounting plate 7, which is fixedly connected to the bottom of the support plate 1, provides stable support for the entire pressing part 2. The pressing cylinder 8, which is fixed below the mounting plate 7, is activated. Its telescopic rod drives the horizontal bar 9 to move. One end of the horizontal bar 9 pulls the connecting rod 10 through the shaft. The other end of the connecting rod 10 drives the vertically set connecting rod 2 11 to rotate around the shaft of the mounting seat on the mounting plate 7 through the shaft. At the same time, the other end of the horizontal bar 9 pulls the connecting rod 3 13 through the shaft. One end of the connecting rod 3 13 drives the tail end of the pressure head 12 to move through the shaft. Under the synergistic action of the connecting rod 2 11 and the connecting rod 3 13, the pressure head 12 rotates around the shaft connected to the connecting rod 2 11 in the middle. Finally, the pressure head 12 moves towards the lower gear plate and presses it. When the lower gear plate is to be released, the telescopic rod of the clamping cylinder 8 moves in the opposite direction, causing the crossbar 9, connecting rod 10, connecting rod 2 11, and connecting rod 3 13 to move in the opposite direction. The pressure head 12 then moves away from the lower gear plate, completing the release operation. This setup, through the linkage of the multi-link structure driven by the clamping cylinder 8, achieves automatic clamping and releasing of the pressure head 12, eliminating the need for manual operation of bolts or levers, greatly simplifying the operation process and reducing manual labor intensity. At the same time, the coordinated transmission of the multi-link ensures that the pressure head 12 moves smoothly and the clamping force is uniform, preventing the lower gear plate from shifting or being damaged due to uneven force, ensuring the stability of the turning head machine during processing. Furthermore, the through hole in the middle of the mounting plate 7 does not affect the movement of the components of the clamping part 2, further improving the reliability of the clamping part 2.

[0030] See Figure 3 Before placing the support block 4, align the lower end of the "L"-shaped support block 4 with the recessed groove 14 on the surface of the support plate 1 according to the size specifications of the lower gear guard plate to be installed, and insert it into it. Since the length of the groove 14 is greater than the length of the bottom of the support block 4, the support block 4 can be pushed along the extension direction of the groove 14 to adjust the position of the support block 4 on the support plate 1, so that multiple support blocks 4 can be evenly distributed under the lower gear guard plate to be installed, ensuring stable support for the lower gear guard plate; after the lower gear guard plate is placed on the support block 4, the groove 14 limits the bottom of the support block 4, preventing the support block 4 from moving perpendicular to the groove 14 during the support process. The directional offset ensures the stability of the lower gear guard plate. When it is necessary to replace the lower gear guard plate with a different size, the support position can be adjusted simply by moving the support block 4 along the slide 14, without the need to disassemble or reinstall the support block 4. This setting can flexibly adapt to the support requirements of lower gear guard plates of different sizes, without the need to design a special support structure for different sizes of lower gear guard plates, reducing equipment adaptation costs. At the same time, the limiting function of the slide 14 can prevent the support block 4 from shifting, which would cause the lower gear guard plate to tilt or slip, improving the safety of the replacement process and reducing the time required for repeated adjustments due to improper position of the support block 4, further improving the replacement efficiency of the lower gear guard plate.

[0031] See Figure 4 and Figure 5When the automatic locking head 6 of the semi-automatic quick-change device for the lower gear plate of the toggle machine is working, the mounting plate 2 15, which is fixedly connected to the lower part of the support plate 1, provides a stable mounting base for the entire automatic locking head 6. When it is necessary to lock the limiting rod 5 of the support block 4, as the lifting plate 3 moves, the limiting rod 5 moves into the gap between the swing block 17 and the stop bar 16 in the vertical state and passes through the gap. During the process, the limiting rod 5 pushes the swing block 17 to rotate around the axis connected to the mounting plate 2 15. At this time, the end of the upper edge of the swing block 17 that is in contact with the side wall of the stop bar 16 disengages, and the tension spring 18 connected between the other end of the upper edge of the swing block 17 and the stop bar 16 is stretched. When the limiting rod 5 completely passes through the gap, the tension spring 18 returns to its original deformation, pulling the swing block 17 to rotate in the opposite direction and reset. One end of the upper edge of the swing block 17 re-contacts the side wall of the stop bar 16. At this time, the swing block 17 and the stop bar 16 cooperate to restrict the limiting rod 5 within the gap, thus achieving locking. When unlocking is required, the swing block 17 is pushed by external force to overcome the elastic force of the tension spring 18 and rotate, thereby widening the gap and allowing the limiting rod 5 to disengage from the gap. This setting eliminates the need for manual locking or unlocking. It can automatically lock the limiting rod 5 with the cooperation of the tension spring 18 and the swing block 17, preventing the support block 4 from shifting and causing the lower gear plate to slip during the replacement process, thus improving operational safety. At the same time, it simplifies the locking operation steps, reduces manual intervention, and further speeds up the replacement efficiency of the lower gear plate. In addition, the right-angled stop bar 16 can provide a stable limiting reference for the swing block 17, ensuring the reliability of the locking effect.

[0032] See Figure 1 Before placing the lower gear guard to be replaced, the support plate 1 has pre-installed mirror-set positioning blocks 19. The operator only needs to place the lower gear guard between the support blocks 4 on the support plate 1 and slowly adjust the position of the lower gear guard so that the outer edge of the lower gear guard gradually approaches the inner wall of the positioning block 19 until the outer edge of the lower gear guard is in complete contact with the inner wall of the positioning blocks 19 on both sides. At this time, the lower gear guard is accurately in the preset installation position without the need for repeated measurement or adjustment of alignment. After the lower gear guard is positioned, the subsequent clamping part 2 can directly clamp it. The design ensures a secure fit, eliminating concerns about the lower gear plate being affected by positional misalignment. This setup uses mirrored positioning blocks 19 to quickly guide the lower gear plate to the correct installation position, avoiding deviations that occur during manual alignment. This significantly shortens the alignment time of the lower gear plate, improving replacement efficiency. Simultaneously, the contact between the positioning blocks 19 and the outer edge of the lower gear plate temporarily restricts its movement before subsequent clamping operations, preventing it from shifting before clamping. This lays the foundation for stable clamping and reduces rework caused by misalignment, further ensuring the accuracy of subsequent processing by the toggle machine.

[0033] During the process of placing the lower gear guard disc between the support blocks 4 on the support plate 1 and adjusting its outer edge to contact the inner wall of the mirror-set positioning block 19, it is necessary to simultaneously align the protruding positioning pin 20 on the inner side of the positioning block 19 with the positioning hole at the lower end of the lower gear guard disc, so that the positioning pin 20 is accurately inserted into the positioning hole to complete the positioning of the lower gear guard disc; when the positioning pin 20 is fully engaged with the positioning hole, the position of the lower gear guard disc is further fixed, which not only prevents the lower gear guard disc from shifting in the horizontal direction, but also avoids it from being misaligned during subsequent pressing operations or the operation of the turning machine. The lower gear plate rotates circumferentially. This design, through the cooperation of the positioning pin 20 and the positioning hole of the lower gear plate, further improves the positioning accuracy of the lower gear plate. Compared with the positioning method that relies solely on the contact between the inner side wall of the positioning block 19 and the outer edge of the lower gear plate, it can more reliably limit the displacement of the lower gear plate, reduce the problem of decreased machining accuracy of the turning machine caused by the position deviation of the lower gear plate, and at the same time assist the operator to quickly complete the alignment of the lower gear plate without repeated adjustments, further shortening the replacement time and improving the efficiency and stability of the lower gear plate replacement.

[0034] The working principle of this invention is as follows: I. Lower gear guard disassembly procedure; Release operation of the clamping part: Activate the clamping cylinder 8 in the clamping part 2, causing its telescopic rod to retract in the opposite direction, driving the horizontal bar 9 to move away from the lower gear plate; one end of the horizontal bar 9 pulls the connecting rod 10 through the shaft, and the connecting rod 10 drives the vertically set connecting rod 2 11 to rotate in the opposite direction around the shaft of the mounting seat on the mounting plate 7. At the same time, the other end of the horizontal bar 9 pulls the connecting rod 3 13 through the shaft, and the connecting rod 3 13 drives the tail end of the pressure head 12 to move synchronously. Under the synergistic action of the connecting rod 2 11 and the connecting rod 3 13, the pressure head 12 rotates around the shaft connected to the connecting rod 2 11 in the middle, gradually moving away from the lower gear plate until the clamping constraint on the lower gear plate is completely released, and then the clamping cylinder 8 is closed.

[0035] The lifting plate moves down and locks with the support block: The lifting plate 3, which is set on the frame of the machine body, moves down. The lifting plate 3 drives the automatic locking head 6 on it to move down synchronously, so that the limit rod 5 protruding outward at the top of the support block 4 gradually approaches the gap between the swing block 17 and the stop bar 16 in the automatic locking head 6. When the limit rod 5 passes through the gap, it pushes the swing block 17 to rotate around the shaft connected to the mounting plate 15. The tension spring 18 is stretched. When the limit rod 5 completely passes through the gap, the tension spring 18 returns to its original deformation and pulls the swing block 17 back to its original position. The swing block 17 and the stop bar 16 cooperate to lock the limit rod 5 in the gap, completing the docking and locking of the lifting plate 3 and the support block 4. At this time, the lower guard plate forms a stable connection with the lifting plate 3 through the support block 4.

[0036] Lifting plate moves up to lift out lower gear plate: After confirming that the automatic locking head 6 is securely locked to the limit rod 5, control the lifting plate 3 to move upward. The lifting plate 3, through the locking cooperation between the automatic locking head 6 and the limit rod 5, drives the support block 4 and the lower gear plate on the support block 4 to rise synchronously, lifting the lower gear plate out from the area of ​​the support plate 1. After the lower gear plate moves to the designated disassembly and placement position, stop the movement of the lifting plate 3 to complete the disassembly and lifting operation of the lower gear plate.

[0037] II. Installation process of the lower gear guard plate; Pre-positioning and docking of the new lower gear guard plate with the lifting plate: Place the new lower gear guard plate in the designated installation area, ensuring that the positioning hole at the lower end of the lower gear guard plate roughly corresponds to the position of the subsequent positioning pin 20; control the lifting plate 3 on the machine frame to move downward, so that the automatic locking head 6 on the lifting plate 3 approaches the "L"-shaped support block 4 of the new lower gear guard plate to be supported, until the limiting rod 5 at the top of the support block 4 passes through the gap between the swing block 17 and the stop bar 16 in the automatic locking head 6. After the tension spring 18 deforms and resets, it drives the swing block 17 to lock the limiting rod 5, completing the docking of the lifting plate 3 and the support block 4. At this time, the support block 4 can move synchronously with the lifting plate 3.

[0038] The lifting plate moves downward and the lower gear plate is precisely positioned: the lifting plate 3, which has been connected to the support block 4, is slowly moved downward, driving the new lower gear plate towards the support plate 1; during the movement, the positional relationship between the outer edge of the lower gear plate and the inner wall of the positioning block 19, which is mirrored on the surface of the support plate 1, is observed, and the position of the lifting plate 3 is finely adjusted so that the outer edge of the lower gear plate gradually fits the inner wall of the positioning block 19, while ensuring that the positioning pin 20 on the inner side of the positioning block 19 is accurately inserted into the positioning hole at the lower end of the lower gear plate, thus completing the precise positioning of the new lower gear plate. At this time, the lower gear plate is placed stably on the support block 4 in the area of ​​the support plate 1.

[0039] Automatic locking head unlocking and lifting plate reset: After confirming that the new lower guard plate is correctly positioned, the swing block 17 in the automatic locking head 6 is pushed by external force to overcome the elastic force of the tension spring 18 and make the swing block 17 rotate around the shaft on the mounting plate 2 15, widening the gap between the swing block 17 and the stop bar 16, allowing the limit rod 5 at the top of the support block 4 to disengage from the gap, releasing the locking state between the lifting plate 3 and the support block 4; control the lifting plate 3 to move upward to the preset position that does not affect the subsequent pressing operation, and complete the reset of the lifting plate 3.

[0040] Starting the clamping part and fixing the lower gear plate: Start the clamping part 2 on the outer ring of the mounting hole of the support plate 1, control the extension rod of the clamping cylinder 8 in the clamping part 2 to extend, and drive the horizontal bar 9 to move closer to the new lower gear plate; one end of the horizontal bar 9 pulls the connecting rod 10 through the shaft, and the connecting rod 10 drives the vertical connecting rod 21 to rotate around the shaft of the mounting seat on the mounting plate 7. At the same time, the other end of the horizontal bar 9 pulls the connecting rod 313 through the shaft, and the connecting rod 313 drives the tail end of the pressure head 12 to move synchronously. Under the coordinated action of the connecting rod 211 and the connecting rod 313, the pressure head 12 rotates around its middle shaft and gradually fits against the surface of the new lower gear plate until the pressure head 12 applies a stable clamping force to the lower gear plate, and the clamping cylinder 8 is closed, completing the installation and fixing of the new lower gear plate.

[0041] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A semi-automatic quick-change device for the lower gear guard plate of a torsion head machine, comprising a support plate (1), characterized in that: The support plate (1) has a through mounting hole in the middle, and multiple clamping parts (2) are provided on the outer ring of the mounting hole. Above the support plate (1) is a movable lifting plate (3) set on the machine frame. Multiple "L"-shaped support blocks (4) supporting the lower guard plate are placed on the support plate (1). The top of the support block (4) has an outwardly protruding limit rod (5). The lifting plate (3) has an automatic locking head (6) that cooperates with the limit rod (5).

2. The semi-automatic quick-change device for the lower gear guard plate of a torsion head machine according to claim 1, characterized in that: Each pressing part (2) includes a mounting plate 1 (7) fixedly connected to the bottom of the support plate (1). The mounting plate 1 (7) has a through hole in the middle. A pressing cylinder (8) is fixed below the mounting plate 1 (7). A horizontal bar (9) is fixed on the telescopic rod of the pressing cylinder (8). One end of the horizontal bar (9) is movably connected to the connecting rod 1 (10) through a shaft. The other end of the connecting rod 1 (10) is movably connected to the vertically arranged connecting rod 2 (11) through a shaft. The lower end of the connecting rod 2 (11) is movably connected to the mounting seat on the mounting plate 1 (7) through a shaft. The upper end of the connecting rod 2 (11) is movably connected to the middle of the pressing head (12) through a shaft. The tail end of the pressing head (12) is movably connected to one end of the connecting rod 3 (13) through a shaft. The other end of the connecting rod 3 (13) is movably connected to the other end of the horizontal bar (9) through a shaft.

3. A semi-automatic quick-change device for the lower gear guard plate of a torsion head machine according to claim 1 or 2, characterized in that: The surface of the support plate (1) has a concave groove (14), and the lower end of the support block (4) is inserted into the groove (14). The length of the groove (14) is greater than the length of the bottom of the support block (4).

4. A semi-automatic quick-change device for the lower gear guard plate of a torsion head machine according to claim 3, characterized in that: The automatic locking head (6) includes a mounting plate two (15) fixedly connected to the bottom of the support plate (1). The surface of the mounting plate two (15) has a right-angled stop bar (16) protruding outward. A rotatable swing block (17) is movably mounted on the mounting plate two (15) via a shaft. One end of the upper edge of the swing block (17) can contact the side wall of the stop bar (16). The other end of the upper edge of the swing block (17) is connected to the stop bar (16) via a shaft and a tension spring (18). In the vertical state, there is a gap between the swing block (17) and the stop bar (16) for the limit rod (5) to pass through.

5. A semi-automatic quick-change device for the lower gear plate of a torsion head machine according to claim 4, characterized in that: The surface of the support plate (1) is equipped with a mirror-set positioning block (19), and the inner sidewall of the positioning block (19) can contact the outer edge of the lower gear plate.

6. A semi-automatic quick-change device for the lower gear plate of a torsion head machine according to claim 5, characterized in that: The inner side of the positioning block (19) has a protruding positioning pin (20), which can be engaged with the positioning hole at the lower end of the lower gear plate.

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