Curtain fabric fixed-length cutting device

Abstract

The utility model relates to the technical field of curtain fabric tailoring, and discloses a curtain fabric fixed-length tailoring device which comprises a tailoring table and a tailoring frame, the two opposite side walls of the tailoring table are provided with two supporting plates distributed in an axial symmetry mode, and the tailoring frame is arranged at the top of the tailoring table. The two opposite sides of the bottom of the cutting frame are connected with the supporting plate in a matched mode through adaptive bolts, a cutting sliding groove is formed in the top of the cutting table, the axial direction of the cutting sliding groove is consistent with that of the cutting frame, the rapid replacement type cutting assembly is arranged in the cutting frame, and the rapid replacement type cutting assembly is correspondingly connected with the interior of the cutting frame in a sliding fit mode. According to the curtain fabric fixed-length cutting device, quick replacement of the cutter is achieved, tool assistance is not needed, the whole replacement process only needs several seconds, and compared with a traditional mode, the efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of curtain fabric cutting technology, specifically a curtain fabric fixed-length cutting device. Background Technology

[0002] In the field of curtain fabric processing, traditional fixed-length cutting devices have many technical bottlenecks. The process of changing the cutter is cumbersome, and the use of bolts for fixing is not only complicated and time-consuming, but also prone to reduced cutting accuracy due to improper installation, affecting production efficiency and product quality. The exposed cutter during the cutting process poses a significant safety hazard. Operators are very likely to be scratched when loading and unloading materials or debugging the equipment, which threatens personal safety. To address this, we have proposed a fixed-length cutting device for curtain fabrics. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a curtain fabric fixed-length cutting device, which solves the aforementioned problems.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a curtain fabric fixed-length cutting device, comprising:

[0005] The cutting table and the cutting frame are provided. The cutting table has two support plates that are symmetrically distributed on two opposite side walls. The cutting frame is provided on the top of the cutting table. The bottom two opposite sides of the cutting frame are connected to the support plates by matching bolts. The top of the cutting table has a cutting groove that is aligned with the axial direction of the cutting frame.

[0006] A quick-change cutting component is disposed inside the cutting frame. The quick-change cutting component is slidably connected to the inside of the cutting frame and is used for cutting curtain fabric.

[0007] Preferably, the cutting frame has safety boxes on both sides, the safety boxes are hollow rectangular boxes, the opposite side walls of the two safety boxes are open, the four corners of the bottom of the safety boxes are connected to the end face of the support plate by matching screws, and the side walls of the safety boxes are provided with mating grooves.

[0008] Preferably, the side wall of the cutting frame shaft end is provided with a connecting plate, and the side wall of the cutting frame away from the safety box at the connecting plate end is provided with a tool replacement port. The two shaft ends of the cutting frame are provided with through-type lead screw connection holes, and guide slide rods are provided on both sides of the cutting frame corresponding to the lead screw connection holes.

[0009] Preferably, the quick-change cutting assembly includes a motor, a slider, a cutter, and a clamping component. The driving component of the cutting assembly is a motor, the output screw of the motor is inserted into the cutting frame, and the top of the slider is connected to the output screw of the motor. The slider is equipped with a cutter and a clamping component inside, and the cutter and the clamping component are engaged.

[0010] Preferably, the motor body is fixedly connected to the side wall of the connecting plate by adapter bolts, and the two ends of the motor output screw are correspondingly connected to the screw connection holes.

[0011] Preferably, the top of the sliding member is provided with a mating nut, the inside of which is connected to the output screw of the motor, and the sides of the mating nut are provided with guide cylinders that are slidably connected to the guide slide rod inside the cutting frame.

[0012] Preferably, the sliding member has a control box on its side wall, an inner cavity inside the control box, and a positioning cavity inside the sliding member. The positioning cavity has an inverted triangular cross-section, and the bottom and one side shaft end of the positioning cavity are open. Three sliding holes I are equidistantly distributed between the inner cavity and the positioning cavity. Two sliding holes II are axially symmetrically distributed on the side wall of the control box, and the sliding holes II communicate with the inner cavity.

[0013] Preferably, the clamping member is placed inside the inner cavity, and the clamping member includes a sliding plate, a mating plate, and two axially symmetrically distributed elastic members. The two ends of the elastic members are respectively welded to the sliding plate and the mating plate. The sliding plate has three clamping pins distributed at equal intervals on the side away from the elastic members. The clamping pins are slidably connected to the first sliding hole. The sliding plate has a pull rod on the side corresponding to the elastic members. The pull rod has a U-shaped structure, and the two ends of the pull rod pass through the elastic members and the mating plate respectively. The pull rod is slidably connected to the second sliding hole.

[0014] Preferably, the cutting tool is placed inside the positioning cavity, the main body of the cutting tool has an inverted triangular cross-section, and the bottom of the cutting tool is provided with a blade, which is slidably connected to the inside of the cutting groove. The top of the cutting tool is provided with a handle, and the side wall of the cutting tool is provided with three equally spaced locking holes, which correspond to the sliding holes and are engaged with locking pins.

[0015] Compared with the prior art, this utility model provides a curtain fabric fixed-length cutting device, which has the following beneficial effects:

[0016] This curtain fabric fixed-length cutting device enables rapid blade replacement. Traditional cutting devices often use bolts to fix the blades, requiring tools for disassembly and installation, which is time-consuming. This device, however, uses a locking mechanism that engages with the blade, utilizing the elasticity of the components to achieve rapid fixation without tools. The entire replacement process takes only a few seconds, significantly improving efficiency compared to traditional methods. Furthermore, the safety box design conceals the exposed blades, and the groove ensures the normal operation of components, reducing the risk of operator injury and enhancing equipment safety. In addition, the stable connection between the cutting frame and the cutting table, along with the high precision of the screw drive, ensures cutting stability and accuracy, effectively improving the cutting quality and production efficiency of curtain fabrics. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the curtain fabric fixed-length cutting device of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the curtain fabric fixed-length cutting device of this utility model;

[0019] Figure 3 This is a schematic diagram of the cutting frame of this utility model;

[0020] Figure 4 This is a schematic diagram of the quick-change cutting component of this utility model;

[0021] Figure 5 This is a cross-sectional view of the sliding component of this utility model.

[0022] In the diagram: 1. Cutting table; 2. Cutting frame; 3. Motor; 4. Sliding component; 5. Cutting slide; 6. Support plate; 7. Cutting tool; 8. Clamping component; 9. Safety box; 10. Cutting tool replacement port; 11. Mating groove; 12. Lead screw connection hole; 13. Connecting plate; 14. Mating nut; 15. Blade; 16. Clamping hole; 17. Handle; 18. Sliding plate; 19. Elastic component; 20. Mating plate; 21. Pull rod; 22. Clamping column; 23. Control box; 24. Inner cavity; 25. Positioning cavity; 26. Sliding hole one; 27. Sliding hole two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 A curtain fabric fixed-length cutting device, comprising:

[0025] The cutting table 1 and the cutting frame 2 are provided. The two opposite side walls of the cutting table 1 are provided with two support plates 6 that are symmetrically distributed on the axis. The top of the cutting table 1 is provided with the cutting frame 2. The two opposite sides of the bottom of the cutting frame 2 are connected to the support plates 6 by matching bolts. The top of the cutting table 1 is provided with a cutting groove 5, which is aligned with the axial direction of the cutting frame 2.

[0026] A quick-change cutting component is installed inside the cutting frame 2. The quick-change cutting component is slidably connected to the inside of the cutting frame 2 and is used to cut the curtain fabric.

[0027] Furthermore, both sides of the cutting frame 2 are equipped with safety boxes 9. The interior of the safety boxes 9 is a hollow rectangular box structure, and the opposite side walls of the two safety boxes 9 are open. The four corners of the bottom of the safety boxes 9 are connected to the end face of the support plate 6 by matching screws. The side wall of the safety box 9 is provided with a mating groove 11. When the quick-change cutting component is used to cut the curtain fabric back and forth, the two safety boxes 9 can store the quick-change cutting component to prevent the exposed blade 7 from causing scratches to the operator, thus improving operational safety. When the quick-change cutting component is placed inside the safety box 9, the mating groove 11 can engage with the control box 23 of the sliding part 4 to prevent movement from being obstructed, thus improving the rationality of the structure.

[0028] Furthermore, the side wall of the cutting frame 2 shaft end is provided with a connecting plate 13, and the side wall of the cutting frame 2 opposite to the safety box 9 of the connecting plate 13 end is provided with a tool replacement port 10. The two shaft ends of the cutting frame 2 are provided with through-type lead screw connection holes 12, and the inside of the cutting frame 2 is provided with guide slide rods on both sides corresponding to the lead screw connection holes 12. The connecting plate 13 plays a supporting and connecting role for the motor 3. The tool replacement port 10 facilitates the safe replacement of the tool 7 of the quick-change cutting assembly and provides a safe space for the replacement of the tool 7.

[0029] Furthermore, the quick-change cutting assembly includes a motor 3, a sliding member 4, a blade 7, and a clamping member 8. The driving component of the cutting assembly is the motor 3, and the output screw of the motor 3 passes into the interior of the cutting frame 2. The top of the sliding member 4 is connected to the output screw of the motor 3. The sliding member 4 contains the blade 7 and the clamping member 8, which engage with each other. When it is necessary to install or replace the blade 7, the output screw of the motor 3 drives the sliding member 4 to move into the safety box 9, which has a blade replacement port 10 on the side wall. At this time, it moves outward. Pulling the lever 21 of the clamping member 8 compresses the entire clamping member 8, meaning the elastic element 19 is in a continuously compressed state. After the three clamping pins 22 of the clamping member 8 have completely slid out of the blade 15, the tool 7 is placed inside the blade 15, or the tool 7 to be replaced is replaced and placed. Then, the lever 21 is released, and the rebound force of the elastic element 19 causes the clamping pins 22 to insert into the clamping hole 16 of the tool 7, completing the fixed clamping of the tool 7. This simplifies the replacement process of the tool 7, avoids the use of bolts, and greatly improves the replacement efficiency.

[0030] Furthermore, the motor body 3 is fixedly connected to the side wall of the connecting plate 13 by adapter bolts, and the two ends of the output screw of the motor 3 are connected to the screw connection hole 12.

[0031] Furthermore, the top of the sliding member 4 is provided with a mating nut 14, which is connected to the output screw of the motor 3. The mating nut 14 is provided with guide cylinders on both sides, which are connected to the guide slide rod inside the cutting frame 2.

[0032] Furthermore, the sliding member 4 has a control box 23 on its side wall, and an inner cavity 24 is opened inside the control box 23. The sliding member 4 also has a positioning cavity 25 inside. The positioning cavity 25 has an inverted triangular cross-section, and the bottom and one side shaft end of the positioning cavity 25 are open. Three sliding holes 26 are equidistantly distributed between the inner cavity 24 and the positioning cavity 25. Two sliding holes 27 are symmetrically distributed on the side wall of the control box 23. The sliding holes 27 are connected to the inner cavity 24. The inverted triangular cross-section of the positioning cavity 25 and the inverted triangular cross-section of the main body of the tool 7 make positioning quick and easy.

[0033] Furthermore, the clamping component 8 is placed inside the inner cavity 24, and the clamping component 8 includes a sliding plate 18, a mating plate 20, and two axially symmetrically distributed elastic components 19. The two ends of the elastic components 19 are welded to the sliding plate 18 and the mating plate 20, respectively. The sliding plate 18 has three equidistant clamping posts 22 on the side away from the elastic components 19. The clamping posts 22 are slidably connected to the sliding hole 26. The sliding plate 18 has a pull rod 21 on the side corresponding to the elastic components 19. The pull rod 21 has a U-shaped structure, and the two ends of the pull rod 21 pass through the elastic components 19 and the mating plate 20, respectively. The pull rod 21 is slidably connected to the sliding hole 27. The elastic components 19 are always in a compressed state, which effectively ensures the clamping quality of the tool 7 and improves the cutting safety.

[0034] Furthermore, the cutter 7 is placed inside the positioning cavity 25. The main body of the cutter 7 has an inverted triangular cross-section, and the bottom of the cutter 7 is provided with a blade 15. The blade 15 is slidably connected to the inside of the cutting groove 5. The top of the cutter 7 is provided with a handle 17. The side wall of the cutter 7 has three equally spaced locking holes 16. The locking holes 16 correspond to the first sliding hole 26, and the locking holes 16 are engaged with the locking pin 22. The handle 17 makes it easy for the staff to take it out during the replacement process, improving the safety of the replacement.

[0035] Structural Description:

[0036] Cutting table 1: Cutting table 1 is the basic load-bearing structure of the device. The top is provided with a cutting groove 5 that is aligned with the axis of the cutting frame 2. The two opposite side walls are provided with support plates 6 that are symmetrically distributed to support the cutting frame 2 and provide an operating plane for fabric cutting.

[0037] Cutting frame 2: The cutting frame 2 is connected to the support plate 6 by the adapter bolts and fixed to the top of the cutting table 1. It is equipped with guide slide rod and screw connection hole 12 for installing quick-change cutting components to realize fabric cutting operation.

[0038] Motor 3: Motor 3 is fixed to the shaft end of the cutting frame 2 via connecting plate 13, serving as the driving component of the cutting assembly. Its output lead screw extends into the cutting frame 2 through lead screw connection hole 12, providing power for the movement of sliding component 4.

[0039] Sliding component 4: The top of the sliding component 4 is equipped with a mating nut 14 that engages with the output screw of the motor 3. The guide cylinders on both sides are slidably connected to the guide slide of the cutting frame 2. The inside is equipped with a cutter 7 and a clamping component 8, which can slide back and forth in the cutting frame 2 to achieve cutting.

[0040] Cutting groove 5: Cutting groove 5 is opened at the top of cutting table 1 and is aligned with the axis of cutting frame 2. It provides a sliding track for the blade 15 at the bottom of the cutter 7, ensuring that the blade 15 cuts the curtain fabric along a fixed path.

[0041] Support plate 6: The support plate 6 is symmetrically distributed on the two opposite side walls of the cutting table 1. It is connected to the bottom of the cutting frame 2 by the adapter bolts, which plays a role in stabilizing and supporting the cutting frame 2 and ensuring the overall structural stability of the cutting device.

[0042] Cutter 7: The main body of cutter 7 has an inverted triangular cross section and is placed in the positioning cavity 25 of sliding member 4. The blade 15 at the bottom cooperates with the cutting groove 5. The side wall is provided with a locking hole 16 that engages with the locking post 22 of locking member 8. The top handle 17 is convenient for replacement.

[0043] Clamping component 8: The clamping component 8 is located in the inner cavity 24 of the control box 23 of the sliding component 4. It consists of a sliding plate 18, a mating plate 20 and an elastic component 19. The clamping column 22 is extended and retracted by the pull rod 21 to realize the quick clamping and disassembly of the tool 7.

[0044] Safety box 9: Safety box 9 is a hollow rectangular box structure, located on both sides of the cutting frame 2, with openings on opposite side walls, and the bottom is connected to the support plate 6. It is used to store cutting components and prevent the blades 7 from being exposed. The side wall is fitted with grooves 11 to ensure the operation of the components.

[0045] Tool replacement port 10: Tool replacement port 10 is located on the side wall of the safety box 9 at the end of the cutting frame 2 away from the connecting plate 13, providing a replacement channel for the tool 7 of the quick-change cutting assembly, making it easy and convenient to replace the tool.

[0046] Mating groove 11: The mating groove 11 is opened on the side wall of the safety box 9. When the sliding part 4 is placed in the safety box 9, it mates with the control box 23 on the side wall of the sliding part 4 to prevent the movement of the control box 23 from being obstructed and to ensure the normal operation of the cutting assembly.

[0047] Lead screw connection hole 12: The lead screw connection hole 12 is a hole structure that passes through the two shaft ends of the cutting frame 2. It is used for the output lead screw of the motor 3 to pass through and connect with the mating nut 14 on the top of the sliding part 4 to realize power transmission and drive of the sliding part 4.

[0048] Connecting plate 13: The connecting plate 13 is fixed to the side wall of the shaft end of the cutting frame 2. It is used to support and fix the motor 3, ensure that the motor 3 is installed firmly, and enable the output screw of the motor 3 to accurately pass into the interior of the cutting frame 2 to transmit power.

[0049] Matching nut 14: Matching nut 14 is installed on the top of sliding part 4, and meshes with the output screw of motor 3 inside. The guide cylinders on both sides cooperate with the guide slide of cutting frame 2 to convert the rotational motion of the screw into the linear motion of sliding part 4.

[0050] Blade 15: Blade 15 is installed at the bottom of the cutter 7 and slides inside the cutting groove 5. Driven by the slider 4, it moves along the cutting groove 5 to cut the curtain fabric laid flat on the cutting table 1.

[0051] Clamping holes 16: Clamping holes 16 are evenly distributed on the side wall of the tool 7 and correspond to the clamping pins 22 of the clamping member 8. By inserting and pulling out the clamping pins 22, the tool 7 can be fixed and disassembled in the sliding member 4.

[0052] Handle 17: Handle 17 is located on the top of the knife 7, which makes it convenient for staff to hold and pick up the knife 7 when changing the knife 7, thus improving the safety and convenience of the knife changing process;

[0053] Sliding plate 18: The sliding plate 18 is a component of the clamping member 8. It is located in the inner cavity 24 of the control box 23. A clamping post 22 is provided on the side opposite to the elastic member 19. It can slide in the sliding hole 26 by pulling the pull rod 21, thereby controlling the extension and retraction of the clamping post 22.

[0054] Elastic element 19: The sliding plate 18 and the mating plate 20 are welded to both ends of the elastic element 19 respectively. It is always in a compressed state. The elastic force pushes the sliding plate 18 to make the clamping post 22 insert into the clamping hole 16 of the tool 7, so as to ensure that the tool 7 is firmly clamped.

[0055] Mating plate 20: The mating plate 20 is welded to one end of the elastic element 19 to provide support for the elastic element 19. At the same time, it cooperates with the tie rod 21 to limit the range of movement of the tie rod 21 and ensure the stable operation of the clamping element 8.

[0056] Pull rod 21: Pull rod 21 is U-shaped, with both ends passing through elastic element 19 and mating plate 20, and slidingly engaging with sliding hole 27 on the side wall of control box 23. Pulling pull rod 21 controls the locking and unlocking of clamping element 8.

[0057] Clamping pins 22: Clamping pins 22 are evenly distributed on the sliding plate 18 and slide in cooperation with the sliding hole 26. By telescoping and extending, they engage or disengage with the clamping hole 16 on the side wall of the tool 7 to achieve the fixing and disassembly of the tool 7.

[0058] Control box 23: The control box 23 is located on the side wall of the sliding member 4. An inner cavity 24 is opened inside for installing the clamping member 8. It also has a sliding hole 26 that communicates with the positioning cavity 25 and a sliding hole 27 that communicates with the outside, so as to facilitate the operation of the clamping member 8.

[0059] Cavity 24: The cavity 24 is located inside the control box 23 and is used to accommodate components such as the sliding plate 18, mating plate 20 and elastic element 19 of the clamping element 8, providing space for the operation of the clamping element 8;

[0060] Positioning cavity 25: The positioning cavity 25 is located inside the sliding member 4. It has an inverted triangular cross section and is open at the bottom and one side of the shaft end. It is adapted to the shape of the main body of the tool 7, which facilitates the quick positioning and installation of the tool 7.

[0061] Sliding hole 26: Sliding holes 26 are equidistantly distributed between the inner cavity 24 and the positioning cavity 25, providing a sliding channel for the clamping pin 22 of the clamping member 8, so that the clamping pin 22 can be inserted into or slide out of the clamping hole 16 of the tool 7.

[0062] Sliding hole 27: Sliding hole 27 is symmetrically distributed on the side wall of control box 23 and communicates with inner cavity 24. It is used for pull rod 21 to pass through, so that the operator can pull pull rod 21 to control clamping part 8 and realize tool 7 replacement.

[0063] Working principle: Install the curtain fabric fixed-length cutting device correctly according to the diagram. When the device is running, first lay the fabric flat on the cutting table 1. The cutting frame 2 is fixed to the top of the cutting table 1 by the support plate 6, and its axis is aligned with the cutting groove 5. The motor 3 is fixed to the shaft end of the cutting frame 2 by the connecting plate 13. The output lead screw of the motor 3 passes through the lead screw connection hole 12 and extends into the interior of the cutting frame 2, engaging with the mating nut 14 at the top of the sliding member 4. When the system starts, the motor 3 drives the output lead screw to rotate. Due to the engagement of the guide cylinder and the guide slide rod inside the cutting frame 2, the mating nut 14 can only move linearly along the lead screw direction, thereby driving the sliding member 4 to slide back and forth within the cutting frame 2. The cutter 7 inside the sliding member 4 engages with the cutting groove through the bottom blade 15. 5. With the movement of the sliding member 4, the blade 15 reciprocates along the cutting groove 5 to cut the fabric, achieving fixed-length cutting. When the blade 7 needs to be replaced, the motor 3 drives the sliding member 4 to move into the safety box 9 with a blade replacement port 10. Pulling the lever 21 of the clamping member 8 causes the sliding plate 18 to compress the elastic member 19, and the three clamping pins 22 slide out from the clamping hole 16 of the blade 7, allowing the old blade to be removed. After inserting the new blade, the lever 21 is released, and the rebound force of the elastic member 19 pushes the sliding plate 18, causing the clamping pins 22 to re-insert into the clamping hole 16 of the new blade, completing the blade fixing. During the cutting process, the safety box 9 stores the sliding member 4 and the blade 7, and the groove 11 ensures that the movement of the control box 23 is unobstructed, effectively ensuring the safety of the operator.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A curtain fabric fixed-length cutting device, characterized in that, include: The cutting table (1) and the cutting frame (2) are provided. The cutting table (1) has two support plates (6) that are symmetrically distributed on two opposite side walls. The cutting frame (2) is provided on the top of the cutting table (1). The two opposite sides of the bottom of the cutting frame (2) are connected to the support plates (6) by matching bolts. The cutting table (1) has a cutting groove (5) on the top. The cutting groove (5) is aligned with the axial direction of the cutting frame (2). A quick-change cutting component is installed inside the cutting frame (2). The quick-change cutting component is slidably connected to the inside of the cutting frame (2) and is used to cut the curtain fabric.

2. The curtain fabric fixed-length cutting device according to claim 1, characterized in that, The cutting frame (2) is provided with safety boxes (9) on both sides. The safety boxes (9) are hollow rectangular boxes with open side walls on opposite sides. The bottom corners of the safety boxes (9) are connected to the end face of the support plate (6) by matching screws. The side wall of the safety box (9) is provided with a mating groove (11).

3. The curtain fabric fixed-length cutting device according to claim 2, characterized in that, The cutting frame (2) has a connecting plate (13) on the side wall of the shaft end, and a tool replacement port (10) is opened on the side wall of the safety box (9) away from the connecting plate (13). The two shaft ends of the cutting frame (2) have through screw connection holes (12), and guide slides are provided on both sides of the cutting frame (2) corresponding to the screw connection holes (12).

4. The curtain fabric fixed-length cutting device according to claim 1, characterized in that, The quick-change cutting assembly includes a motor (3), a sliding member (4), a cutter (7), and a clamping member (8). The driving component of the cutting assembly is the motor (3). The output screw of the motor (3) is inserted into the cutting frame (2). The top of the sliding member (4) is connected to the output screw of the motor (3). The sliding member (4) is equipped with a cutter (7) and a clamping member (8). The cutter (7) and the clamping member (8) are engaged.

5. A curtain fabric fixed-length cutting device according to claim 4, characterized in that, The motor (3) body is fixedly connected to the side wall of the connecting plate (13) by the adapter bolts, and the two ends of the output screw of the motor (3) are connected to the screw connection hole (12) respectively.

6. A curtain fabric fixed-length cutting device according to claim 4, characterized in that, The top of the sliding member (4) is provided with a mating nut (14), which is connected to the output screw of the motor (3) and the two sides of the mating nut (14) are provided with guide cylinders that are slidably connected to the guide slide rod inside the cutting frame (2).

7. A curtain fabric fixed-length cutting device according to claim 6, characterized in that, The sliding member (4) has a control box (23) on its side wall. The control box (23) has an inner cavity (24) inside, and the sliding member (4) has a positioning cavity (25) inside. The positioning cavity (25) has an inverted triangular cross section, and the bottom and one side shaft end of the positioning cavity (25) are open. There are three sliding holes (26) that are evenly distributed between the inner cavity (24) and the positioning cavity (25). There are two sliding holes (27) that are axially symmetrically distributed on the side wall of the control box (23). The sliding holes (27) are connected to the inner cavity (24).

8. A curtain fabric fixed-length cutting device according to claim 4, characterized in that, The clamping member (8) is placed inside the inner cavity (24), and the clamping member (8) includes a sliding plate (18), a mating plate (20) and two axially symmetrically distributed elastic members (19). The two ends of the elastic members (19) are welded to the sliding plate (18) and the mating plate (20) respectively. The sliding plate (18) is provided with three clamping posts (22) distributed at equal intervals on the side away from the elastic members (19). The clamping posts (22) are slidably connected to the first sliding hole (26). The sliding plate (18) is provided with a pull rod (21) on the side corresponding to the elastic members (19). The pull rod (21) has a U-shaped structure. The two ends of the pull rod (21) pass through the elastic members (19) and the mating plate (20) respectively. The pull rod (21) is slidably connected to the second sliding hole (27).

9. A curtain fabric fixed-length cutting device according to claim 4, characterized in that, The cutting tool (7) is placed inside the positioning cavity (25). The main body of the cutting tool (7) has an inverted triangular cross section. The bottom of the cutting tool (7) is provided with a blade (15). The blade (15) is slidably connected to the cutting groove (5). The top of the cutting tool (7) is provided with a handle (17). The side wall of the cutting tool (7) is provided with three equally spaced locking holes (16). The locking holes (16) correspond to the first sliding hole (26). The locking holes (16) are engaged with the locking pin (22).

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