Automatic lifting mechanism for cloth cutting device

Abstract

The utility model discloses a cloth cutting device is with automatic elevating mechanism, including main elevating subassembly and elevating adjusting subassembly, main elevating subassembly includes square frame seat, first drive subassembly and guide rail subassembly and cutter bar connecting piece, and first drive subassembly includes first servo motor, first motor mounting seat and adapter frame, and first servo motor installs the back side of square frame seat through first motor mounting seat, and one side of first motor mounting seat is connected with first servo motor drive, and the other side is connected with adapter frame drive, guide rail subassembly includes guide rail seat and the slide that straddles and is connected on the slide of guide rail seat, and cutter bar connecting piece installs on the slide, and the bottom end vertical fixed connection cutting tool of cutter bar connecting piece, elevating adjusting subassembly includes second drive subassembly, wheel shaft and connecting rod piece, and one end rotation is connected in the outer end surface of wheel shaft in connecting rod piece, and the other end rotation is connected in cutter bar connecting piece. This mechanism realizes efficient coarse adjustment and accurate fine adjustment organic combination, stable structure, and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the technical field of fabric cutting equipment, specifically to an automatic lifting mechanism for a fabric cutting device. Background Technology

[0002] Fabric cutting is a crucial preliminary step, and its precision directly affects the quality of subsequent sewing processes and the yield rate of finished products. With the development of automation technology, automatic fabric cutting equipment has gradually replaced traditional manual cutting and become the mainstream equipment in the industry. The automatic lifting mechanism used to drive the cutting tools is one of the core execution components of automatic cutting equipment. Its efficiency, precision, and adaptability in lifting adjustment play a decisive role in the overall cutting efficiency and fabric cutting quality.

[0003] Currently, the tool lifting mechanisms used in existing automatic fabric cutting equipment are mainly divided into two categories: single-drive lifting structures and simple combined lifting structures. Single-drive lifting structures typically use a single servo motor in conjunction with a lead screw or guide rail assembly to achieve lifting adjustment. To meet the cutting needs of fabrics of different thicknesses (such as thin yarn, cotton, and thick fleece), a large lifting stroke is required, leading to an irreconcilable contradiction between the adjustment speed and accuracy of the drive assembly: pursuing a large stroke and rapid adjustment often sacrifices adjustment accuracy, making it impossible to accurately calibrate the tool height, easily resulting in uneven cuts and inconsistent cutting depths, especially when cutting thinner or more delicate fabrics, where quality defects are more pronounced; conversely, prioritizing adjustment accuracy at the expense of adjustment speed significantly prolongs the tool height adjustment time, reducing overall cutting efficiency and failing to meet the high-efficiency requirements of mass production.

[0004] While the simple combined lifting structure attempts to achieve coarse and fine adjustments through two separate drive components, it has obvious defects in its structural design. On the one hand, the installation layout of the two drive components is unreasonable, often using separate installations in different positions on the equipment. This results in an excessively long power transmission path, which easily leads to transmission gaps and accumulated errors. Not only does it fail to effectively improve adjustment accuracy, but it may also affect the stability of the lifting action due to structural interference. On the other hand, there is a lack of precise linkage and coordination mechanism between the coarse and fine adjustment components. The adjustment stroke of the fine adjustment component does not match the positioning accuracy of the coarse adjustment component, making it difficult to achieve seamless connection between efficient coarse adjustment positioning and precise fine adjustment calibration of the tool height. As a result, the problems of low adjustment efficiency and poor accuracy still exist.

[0005] Furthermore, the existing lifting mechanism's connection structure between the cutter bar connector, guide rail assembly, and fine-tuning assembly is poorly designed, making it prone to wobbling or jamming during lifting. This further exacerbates the deviation in adjustment accuracy, resulting in situations where some areas are cut too deeply or not at all when cutting fabric of the same batch and thickness, leading to fabric waste and increased production costs. Simultaneously, the existing lifting mechanism has poor versatility, making it difficult to adapt to the installation requirements of different types of cutting tools. Moreover, adjustments for adaptability to different cutting processes are cumbersome, failing to meet diverse fabric cutting needs. Utility Model Content

[0006] In view of this, the present invention provides an automatic lifting mechanism for a fabric cutting device to solve the problems of existing technologies such as difficulty in balancing adjustment efficiency and adjustment accuracy, poor linkage stability, and insufficient adaptability. To address the aforementioned problems, this utility model provides an automatic lifting mechanism for a fabric cutting device, used to drive and adjust the height of the cutting tools, comprising a main lifting assembly and a lifting adjustment assembly: The main lifting assembly includes a square frame base, a first drive assembly and a guide rail assembly connected to the square frame base, and a cutter bar connector connected to the guide rail assembly. The first drive assembly includes a first servo motor, a first motor mounting base, and an adapter frame. The first servo motor is mounted on the rear side of the square frame base via the first motor mounting base. One side of the first motor mounting base is driven connected to the first servo motor, and the other side is driven connected to the adapter frame. The guide rail assembly includes two guide rail seats vertically parallel to both sides of the square frame base and a slide plate horizontally slidably connected to the guide rail seats. The cutter bar connector is mounted on the slide plate, and the bottom end of the cutter bar connector is vertically fixedly connected to the cutting tool. The lifting adjustment assembly includes a second drive assembly installed on the back of the skateboard, a wheel axle and a connecting rod that pass through the skateboard and are drivenly connected to the second drive assembly at one end. One end of the connecting rod is rotatably connected to the outer end face of the wheel axle, and the other end is rotatably connected to the tool bar connector. The first drive assembly is adapted to drive the guide rail assembly and the cutter bar connector to move up and down, thereby driving the cutting tool to move up and down to a set height. Then, the second drive assembly drives the cutter bar connector to move up and down slightly through the wheel axle and the connecting rod.

[0007] Preferably, the tool holder connector includes a linear slide rail that is vertically slidably connected to the front surface of the slide plate, a connecting seat connected to the outer surface of the linear slide rail, and a bushing mounted on the connecting seat; The linear slide rail includes a slide bar connected to the slide plate and a second slider slidably connected to the slide bar; The bottom of the connecting seat is provided with a threaded push rod, which includes a first screw and a connecting plate integrally connected. A second bearing assembly and a second axial locking nut are installed inside the bushing, and the first screw passes through the second bearing assembly and is threadedly locked onto the second axial locking nut.

[0008] Preferably, the first motor mounting base includes a bearing support mounted on the bottom wall of the back of the square frame base, a first bearing assembly mounted on the upper and lower side walls of the bearing support, and a ball screw rotatably mounted on the first bearing assembly. The first servo motor is fixedly connected to the end of the ball screw via a flange sleeve and a first axial locking nut.

[0009] Preferably, each guide rail seat includes a light rod with both ends vertically fixed to the side of the square frame seat via light rod seats and a first slider slidably connected to the light rod, and each light rod is provided with two first sliders.

[0010] Preferably, the second drive assembly includes a second servo motor fixedly connected to the back of the skateboard via a second motor mounting bracket, the axle being horizontally rotatably mounted on the top side mounting hole of the skateboard via a third bearing assembly, and the end of the axle located on the back of the skateboard being fixedly connected to the second servo motor via a third axial locking nut.

[0011] Preferably, the connecting rod has rotating holes at both ends, and a first rotating connector and a second rotating connector are installed in the two rotating holes respectively. The first rotating connector is inserted into the axle, and the second rotating connector is connected to the connecting seat.

[0012] Preferably, the first rotating connector includes a second screw, a fourth bearing assembly, and a fourth axial locking nut that are horizontally inserted and connected to the axle. The second screw is rotatably connected to the end hole of the connecting rod through the fourth bearing assembly. The end of the second screw away from the axle is fixed to the end of the connecting rod and the fourth bearing assembly by the fourth axial locking nut.

[0013] Preferably, the second rotating connector has the same structure as the first rotating connector.

[0014] Preferably, it further includes a positioning guide component, which includes a positioning seat and a guide post. The positioning seat is used to support the cutting tool, and the guide post slides with the positioning seat to achieve alignment guidance of the cutting tool.

[0015] Preferably, the cutting tool includes a blade and a blade portion integrally connected in sequence, and the blade passes through the positioning seat and is fixedly connected to the connecting plate.

[0016] Compared with the prior art, this utility model has significant advantages and beneficial effects, specifically reflected in the following aspects: 1. The first drive component uses a first servo motor as its power source. The servo motor itself features fast response and stable power output. Combined with a square frame base and vertically parallel guide rails on both sides, it forms a stable structure that drives the sliding plate to quickly adjust the height of the cutter bar connector and cutting tools over a large stroke. This design is adaptable to cutting scenarios with varying fabric thicknesses, such as cutting from single-layer thin yarn to multi-layer thick fleece. It allows the cutter to be quickly moved to the approximate working height without manual assistance, significantly improving pre-cutting preparation efficiency. After the main lifting component delivers the cutter to the set height, the second drive component drives the cutter bar connector to move slightly via a wheel axle and connecting rod. This structure, through the rotational transmission of the connecting rod, converts the rotational motion of the wheel axle into a small linear rise and fall of the cutter, compensating for minor errors that may exist in the coarse adjustment of the main lifting component. For high-precision fabric cutting (such as precision patterned fabrics and multi-layer aligned cutting), this fine-tuning avoids problems such as skewed edges and fabric waste caused by cutter height deviation, significantly improving cutting accuracy.

[0017] 2. The guide rail assembly adopts a structure of two vertically parallel guide rail seats in conjunction with a sliding plate. The sliding plate is connected to the guide rail seats horizontally, forming a symmetrical guiding support. This design can limit the movement trajectory of the sliding plate, preventing it from shifting left or right or wobbling when moving up and down. This ensures that the cutter bar connector and cutting tools always remain in a vertical lifting state, preventing the cutter from tilting during the cutting process and causing uneven fabric edges.

[0018] 3. The cutter bar connector is installed on the horizontally spanning slide plate, and the cutting tool is vertically fixed to the bottom of the cutter bar connector, so that the force of the cutter can be evenly transmitted to the slide plate through the cutter bar connector. At the same time, the wheel axle of the lifting adjustment component passes through the slide plate, and the connecting rod connects the wheel axle and the cutter bar connector. The power transmission path is short and the force is distributed, avoiding component deformation caused by excessive local force and extending the service life of the mechanism. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the automatic lifting mechanism for the fabric cutting device in this embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the first drive assembly and guide rail assembly of the fabric cutting device in one direction in an embodiment of this utility model. Figure 3 This is an exploded structural diagram of the first drive assembly and guide rail assembly of the fabric cutting device in this embodiment of the present invention. Figure 4 This is a three-dimensional structural diagram of the first driving component in an embodiment of the present utility model; Figure 5 This is an exploded structural diagram of the first driving component in an embodiment of the present invention; Figure 6 This is a schematic diagram of the assembly structure of the guide rail assembly and the tool holder connector in an embodiment of this utility model; Figure 7 This is a schematic diagram of the guide rail assembly in an embodiment of the present invention; Figure 8 This is a schematic diagram of the tool holder connector in an embodiment of this utility model; Figure 9 This is an exploded view of the tool holder connector in an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached figures 1-Main lifting assembly; 11-Square frame base; 12-First drive component; 121-First servo motor; 1211-Flange sleeve; 1212-First axial locking nut; 122-First motor mounting bracket; 1221-Bearing support; 1222-First bearing assembly; 1223-Ball screw; 123 - Adapter frame; 13-Guide rail assembly; 131-Guide rail base; 1311-Smooth rod; 1312-First slider; 132 - Skateboard; 14-Tool holder connector; 141-Linear slide rail; 1411-Slide bar; 1412-Second slider; 142-Connecting seat; 1421-Threaded push rod; 14211-First screw; 14212-Connecting plate; 143-Bushing; 1431-Second bearing assembly; 1432-Second axial lock nut; 2-Lifting and adjusting assembly; 21-Second drive assembly; 211-Second servo motor; 2111-Second motor mounting bracket; 22-Wheel axle; 221-Third bearing assembly; 222-Third axial lock nut; 23-Connecting rod; 231-Second screw; 232-Fourth bearing assembly; 233-Fourth axial lock nut; 3-Positioning and guiding components; 4-Cutting scissors; 41-Cut handle; 42-Cut blade. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] like Figure 1-9 As shown, this utility model embodiment provides an automatic lifting mechanism for a fabric cutting device. The automatic lifting mechanism is used to drive and adjust the height of the cutting tool 4. The automatic lifting mechanism includes a main lifting assembly 1 and a lifting adjustment assembly 2, wherein: The main lifting assembly 1 includes a square frame base 11, a first drive assembly 12, a guide rail assembly 13, and a tool bar connector 14. The first drive assembly 12 and the guide rail assembly 13 are connected to the square frame base 11, and the tool bar connector 14 is connected to the guide rail assembly 13. The first drive assembly 12 includes a first servo motor 121, a first motor mounting base 122, and an adapter frame 123. The first servo motor 121 is mounted on the rear side of the square frame base 11 through the first motor mounting base 122. One side of the first motor mounting base 122 is driven connected to the first servo motor 121, and the other side is driven connected to the adapter frame 123. The guide rail assembly 13 includes a guide rail seat 131 and a slide plate 132. The two guide rail seats 131 are vertically and parallelly connected to both sides of the square frame seat 11. The slide plate 132 is slidably connected across the guide rail seat 131. The blade bar connector 14 is installed on the slide plate 132. The bottom end of the blade bar connector 14 is vertically and fixedly connected to the cutting tool 4. The lifting adjustment assembly 2 includes a second drive assembly 21, a wheel axle 22 and a connecting rod 23. The second drive assembly 21 is installed on the back of the slide plate 132. The wheel axle 22 passes through the slide plate 132 and one end of the wheel axle 22 is drivenly connected to the second drive assembly 21. One end of the connecting rod 23 is rotatably connected to the outer end face of the wheel axle 22, and the other end is rotatably connected to the tool bar connector 14. The first drive assembly 12 is adapted to drive the guide rail assembly 13 and the cutter bar connector 14 to move up and down, thereby driving the cutting tool 4 to move up and down to a set height. Then, the second drive assembly 21 drives the cutter bar connector 14 to move up and down slightly through the wheel axle 22 and the connecting rod 23.

[0026] Therefore, the first servo motor 121 drives the slide plate 132 of the drive rail assembly 13 to slide vertically along the guide rail seat 131, driving the cutter bar connector 14 and the cutting tool 4 to complete a large-stroke lifting action. This can quickly move the cutting tool 4 to the set height range, adapting to the cutting needs of the automatic cutting equipment and improving the overall efficiency of the lifting adjustment. After the main lifting assembly 1 moves the cutter to the set height, the second drive assembly 21 drives the connecting rod 23 to rotate through the wheel axle 22, driving the cutter bar connector 14 to move up and down slightly. This allows for fine calibration of the cutter height, solving the precision error problem that may exist in the large-stroke adjustment of the main lifting assembly 1, ensuring the consistency of the cutting depth of the cutting tool 4, and improving the quality of fabric cutting. Through the combination of coarse and fine adjustment, it not only meets the large-range adjustment needs of the cutter height under different fabric thicknesses, but also allows for precise calibration for the cutting process requirements of the same thickness of fabric, avoiding problems such as uneven cut edges and fabric waste caused by cutter height deviation.

[0027] Specifically, please refer to Figure 8 As shown, in one embodiment of this utility model, the tool holder connector 14 includes a linear slide rail 141, a connecting seat 142, and a bushing 143, wherein: The linear slide rail 141 is vertically slidably connected to the front surface of the slide plate 132, and the connecting seat 142 is connected to the outer surface of the linear slide rail 141. The bushing 143 is mounted on the connecting seat 142. The linear slide rail 141 includes a slide bar 1411 and a second slider 1412. The slide bar 1411 is connected to the slide plate 132, and the second slider 1412 is slidably connected to the slide bar 1411. The bottom of the connecting seat 142 is provided with a threaded push rod 1421. The threaded push rod 1421 includes a first screw 14211 and a connecting plate 14212 that are integrally connected. A second bearing assembly 1431 and a second axial locking nut 1432 are installed in the bushing 143, and the first screw 14211 passes through the second bearing assembly 1431 and is threadedly locked onto the second axial locking nut 1432.

[0028] In this embodiment, the slide bar 1411 of the linear slide rail 141 is fixed on the slide plate 132, and the second slider 1412 is connected to the connecting seat 142, so that when the connecting seat 142 drives the cutting tool 4 to make a slight lifting and lowering, it can slide precisely along the vertical direction of the slide bar 1411, avoiding lateral deviation or shaking, ensuring the stability of the tool's posture during the fine adjustment process, and improving the accuracy of the cutting position.

[0029] After the first screw 14211 at the bottom of the connecting seat 142 passes through the second bearing assembly 1431 inside the bushing 143, it is threaded and locked onto the second axial locking nut 1432. On the one hand, the bearing assembly can reduce the frictional resistance when the first screw 14211 rotates, ensuring a smooth adjustment process; on the other hand, the threaded locking structure can firmly lock the adjusted tool height position, preventing height deviation due to vibration during the cutting operation and ensuring the consistency of cutting depth.

[0030] The tool holder connector 14 is assembled from independent components such as the linear slide rail 141, the connecting seat 142, and the bushing 143. The connection relationship between the components is clear, which facilitates production and assembly. When a component is worn or malfunctions, the corresponding component can be disassembled and replaced individually without replacing the whole component, thus reducing maintenance costs.

[0031] Specifically, please refer to Figure 4 , Figure 5 As shown, in one embodiment of this utility model, the first motor mounting base 122 includes a bearing support 1221, a first bearing assembly 1222, and a ball screw 1223, wherein: The bearing support 1221 is mounted on the back bottom wall of the square frame seat 11, the first bearing assembly 1222 is mounted on the upper and lower side walls of the bearing support 1221, and the ball screw 1223 is rotatably mounted on the first bearing assembly 1222. The first servo motor 121 is fixedly connected to the end of the ball screw 1223 via a flange sleeve 1211 and a first axial locking nut 1212.

[0032] Therefore, by installing the first bearing assembly 1222 on both the upper and lower side walls of the bearing support 1221, and rotatably mounting the ball screw 1223 between the two sets of bearing assemblies, the axial and radial displacement of the ball screw 1223 can be limited in both directions, preventing the ball screw 1223 from bending or shaking during high-speed rotation or load-bearing, and ensuring that the lifting action of the main lifting assembly 1 is smooth and without jamming.

[0033] Specifically, please refer to Figure 7 As shown, in one embodiment of this utility model, each guide rail seat 131 includes a guide rod 1311 and a first slider 1312, wherein: The two ends of the light rod 1311 are vertically fixed to the side of the square frame base 11 through the light rod seat. The first slider 1312 is slidably connected to the light rod 1311, and two first sliders 1312 are provided on each light rod 1311.

[0034] Thus, the two guide rail seats 131 have their rods 1311 fixed vertically and parallel to both sides of the square frame seat 11, providing bidirectional parallel guiding constraints for the sliding of the slide plate 132. This effectively limits the lateral offset and torsion of the slide plate 132 during the lifting and lowering process, ensuring that the slide plate 132 drives the cutter bar connector 14 and the cutting tool 4 to always move in the vertical direction, avoiding the impact of guiding deviation on cutting accuracy.

[0035] Specifically, please refer to Figure 9 As shown, in one embodiment of the present invention, the second drive assembly 21 includes a second servo motor 211 fixedly connected to the back of the slide plate 132 via a second motor mounting base 2111, and a wheel axle 22 horizontally rotatably passing through a mounting hole on the top side of the slide plate 132 via a third bearing assembly 221. The end of the wheel axle 22 located on the back of the slide plate 132 is fixedly connected to the second servo motor 211 via a third axial locking nut 222.

[0036] Therefore, the second servo motor 211 has the characteristics of controllable output speed and high positioning accuracy, which can accurately control the rotation angle of the wheel axle 22, and then drive the cutter bar connector 14 through the connecting rod to achieve quantifiable micro-lifting, which meets the high precision calibration requirements of the cutting tool 4 and improves the consistency of fabric cutting.

[0037] Specifically, please refer to Figure 9 As shown, in one embodiment of the present invention, the two ends of the connecting rod 23 are respectively provided with rotating holes, and a first rotating connector and a second rotating connector are respectively installed in the two rotating holes. The first rotating connector is inserted into the wheel axle 22, and the second rotating connector is connected to the connecting seat 142.

[0038] Specifically, the first and second rotating connecting parts inside the rotating holes at both ends of the connecting rod 23 form rotating pairs with the wheel axle 22 and the connecting seat, respectively, smoothly converting the rotational motion of the wheel axle into the oscillating motion of the connecting rod, and further into the vertical micro-lifting motion of the connecting seat. The design of the rotating connecting parts significantly reduces the frictional resistance during the transmission process, avoiding jamming and sticking, and ensuring timely response to fine-tuning actions.

[0039] Specifically, please refer to Figure 9 As shown, in one embodiment of this utility model, the first rotating connecting member includes a second screw 231, a fourth bearing assembly 232, and a fourth axial locking nut 233, wherein: The second screw 231 is horizontally inserted into the axle 22. The second screw 231 is rotatably connected to the end hole of the connecting rod 23 through the fourth bearing assembly 232. The end of the second screw 231 away from the axle 22 is fixed to the end of the connecting rod 23 and the fourth bearing assembly 232 through the fourth axial locking nut 233.

[0040] In this embodiment, the fourth bearing assembly 232 is installed between the end hole of the connecting rod 23 and the second screw 231, which transforms the relative rotation between the connecting rod 23 and the second screw 231 from sliding friction to rolling friction, greatly reducing transmission resistance and preventing jamming or sticking when the wheel axle 22 drives the connecting rod 23 to swing, thus ensuring that the fine-tuning action of the lifting adjustment assembly responds promptly and operates smoothly.

[0041] Specifically, please refer to Figure 9 As shown, in one embodiment of this utility model, the second rotating connector has the same structure as the first rotating connector.

[0042] Specifically, please refer to Figure 6 As shown in one embodiment of the present invention, the automatic lifting mechanism for the fabric cutting device further includes a positioning guide component 3. The positioning guide component 3 includes a positioning seat and a guide column. The positioning seat is used to support the cutting tool 4, and the guide column slides with the positioning seat to achieve the alignment and guidance of the cutting tool 4.

[0043] Therefore, the positioning seat, as the direct bearing component of the cutting tool 4, can precisely limit the installation position of the tool, preventing the tool from tilting or shifting due to its own weight or assembly errors, and ensuring that the tool always maintains a vertically downward cutting posture, laying the foundation for improving the flatness of the fabric cut.

[0044] Specifically, please refer to Figure 1 As shown, in one embodiment of the present invention, the cutting tool 4 includes a blade 41 and a blade 42 that are integrally connected in sequence. The blade 41 passes through the positioning seat and is fixedly connected to the connecting plate 14212.

[0045] The present invention has been disclosed above, but the scope of protection of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An automatic lifting mechanism for a fabric cutting device, used to drive and adjust the height of the cutting tools, characterized in that, Includes the main lifting assembly and the lifting adjustment assembly; The main lifting assembly includes a square frame base, a first drive assembly and a guide rail assembly connected to the square frame base, and a cutter bar connector connected to the guide rail assembly. The first drive assembly includes a first servo motor, a first motor mounting base, and an adapter frame. The first servo motor is mounted on the rear side of the square frame base via the first motor mounting base. One side of the first motor mounting base is driven connected to the first servo motor, and the other side is driven connected to the adapter frame. The guide rail assembly includes two guide rail seats vertically parallel to both sides of the square frame base and a slide plate horizontally slidably connected to the guide rail seats. The cutter bar connector is mounted on the slide plate, and the bottom end of the cutter bar connector is vertically fixedly connected to the cutting tool. The lifting adjustment assembly includes a second drive assembly installed on the back of the skateboard, a wheel axle and a connecting rod that pass through the skateboard and are drivenly connected to the second drive assembly at one end. One end of the connecting rod is rotatably connected to the outer end face of the wheel axle, and the other end is rotatably connected to the tool bar connector. The first drive assembly is adapted to drive the guide rail assembly and the cutter bar connector to move up and down, thereby driving the cutting tool to move up and down to a set height. Then, the second drive assembly drives the cutter bar connector to move up and down slightly through the wheel axle and the connecting rod.

2. The automatic lifting mechanism for the fabric cutting device according to claim 1, characterized in that: The tool holder connector includes a linear slide rail that is vertically slidably connected to the front surface of the slide plate, a connecting seat connected to the outer surface of the linear slide rail, and a bushing mounted on the connecting seat. The linear slide rail includes a slide bar connected to the slide plate and a second slider slidably connected to the slide bar; The bottom of the connecting seat is provided with a threaded push rod, which includes a first screw and a connecting plate integrally connected. The bushing is equipped with a second bearing assembly and a second axial locking nut, and the first screw passes through the second bearing assembly and is threadedly locked onto the second axial locking nut.

3. The automatic lifting mechanism for the fabric cutting device according to claim 1, characterized in that: The first motor mounting base includes a bearing support mounted on the bottom wall of the back of the square frame base, a first bearing assembly mounted on the upper and lower side walls of the bearing support, and a ball screw rotatably mounted on the first bearing assembly. The first servo motor is fixedly connected to the end of the ball screw via a flange sleeve and a first axial locking nut.

4. The automatic lifting mechanism for the fabric cutting device according to claim 3, characterized in that: Each guide rail base includes a light rod with both ends vertically fixed to the side of the square frame base via light rod seats and a first slider slidably connected to the light rod, and each light rod is provided with two first sliders.

5. The automatic lifting mechanism for the fabric cutting device according to claim 1, characterized in that: The second drive assembly includes a second servo motor fixedly connected to the back of the skateboard via a second motor mounting bracket. The axle is horizontally rotatably mounted on the top side mounting hole of the skateboard via a third bearing assembly, and one end of the axle located on the back of the skateboard is fixedly connected to the second servo motor via a third axial locking nut.

6. The automatic lifting mechanism for the fabric cutting device according to claim 2, characterized in that: The connecting rod has rotating holes at both ends, and a first rotating connector and a second rotating connector are installed in the two rotating holes respectively. The first rotating connector is inserted into the axle, and the second rotating connector is connected to the connecting seat.

7. The automatic lifting mechanism for the fabric cutting device according to claim 6, characterized in that: The first rotating connector includes a second screw, a fourth bearing assembly, and a third axial locking nut that are horizontally inserted on the axle. The second screw is rotatably connected to the end hole of the connecting rod through the fourth bearing assembly. The end of the second screw away from the axle is fixed to the end of the connecting rod and the fourth bearing assembly by the third axial locking nut.

8. The automatic lifting mechanism for the fabric cutting device according to claim 7, characterized in that: The second rotating connector has the same structure as the first rotating connector.

9. The automatic lifting mechanism for the fabric cutting device according to claim 2, characterized in that: It also includes a positioning guide component, which includes a positioning seat and a guide post. The positioning seat is used to support the cutting tool, and the guide post slides with the positioning seat to achieve the alignment and guidance of the cutting tool.

10. The automatic lifting mechanism for the fabric cutting device according to claim 9, characterized in that: The cutting tool includes a blade and a blade portion that are integrally connected in sequence, and the blade passes through the positioning seat and is fixedly connected to the connecting plate.

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