A hidden knife joint cutting apparatus

Abstract

The present application relates to the technical field of slitting, in particular to a hidden cutter slitting device, which comprises a rack and a cutting tool installed on the rack and driven by a main push rod, a protective sleeve for hiding the cutting tool and a turntable for transferring the soft joint workpiece are further arranged on the rack, and a pushing device for automatic feeding and discharging is further arranged on the rack. The device hides the cutting tool in the cutter hiding hole and closes it with the bottom protective plate, effectively avoiding the scratch caused by the accidental touch of the cutting tool by the operator, and the cooperation of the turntable and the supporting column can realize feeding on the outside of the rack, and then the turntable transfers the soft joint workpiece to the machining station, effectively avoiding manual operation under the cutting tool, and the cooperation of the pushing device and the feeding device can realize batch automatic feeding and discharging operation, which is not only safer, but also can further improve the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of kerf cutting technology, specifically to a kerf cutting device with concealed blades. Background Technology

[0002] Flexible joints made of silicone, rubber, or plastic typically rely on their elasticity to wrap around the surface of pipes or rods for connection. However, due to their soft texture, the ends are prone to warping or other issues that make quick insertion into external structures difficult. One solution is to cut shallow slits at the ends of these joints, causing them to open outwards and form lobes. This creates a larger flared opening, making it easier to fit onto external structures with larger diameters.

[0003] Currently, the equipment for processing the above-mentioned cuts mainly relies on manual labor to vertically place the flexible joint workpiece onto the positioning post, and then use manual hydraulic equipment or electric push rod to push the cutting tool to cut the upper part of the flexible joint workpiece. However, in this process, since the loading and unloading of the flexible joint workpiece are completed directly below the cutting tool, the operator is prone to accidentally touching the cutting edge of the cutting tool and getting scratched.

[0004] Therefore, it is difficult to meet the existing cutting requirements. In view of this, this application provides a cutting tool concealed cutting device. Summary of the Invention

[0005] The present invention provides the following technical solution: a knife-concealed slitting device, comprising a frame, wherein a mounting plate for mounting a cutting knife is pushed on the top of the frame by a main push rod, a protective sleeve is slidably mounted on the mounting plate by a guide slide rod, and the top of the protective sleeve is connected to the mounting plate by a second return spring, the protective sleeve is provided with a knife-concealing hole for concealing the cutting knife, and a pressure plate for limiting the movement position of the protective sleeve is fixed on the frame;

[0006] The frame is fixed with a mounting base, and the mounting base is rotatably mounted with a turntable via a central shaft. The turntable is fixed with four support columns in a circumferential array for connecting flexible joint workpieces. The central shaft is mounted with a mating gear via a one-way bearing, and the one-way bearing only allows the central shaft to rotate in one direction under the drive of the mating gear. The side of the mounting plate is mounted with a rack that meshes with the mating gear via a side push plate, and the rack can drive the mating gear to rotate 90°.

[0007] A rotating plate is fixed to the end of the central shaft, and four ball-head slide rods are slidably mounted on the rotating plate in a circular array. The ball-head slide rods are connected to the rotating plate through a first return spring, and an arc-shaped mating groove corresponding to the ball head part of the ball-head slide rod is provided on the mounting base.

[0008] Preferably, a controller is fixedly installed on the frame, and the main push rod is a ball screw type electric push rod, which is electrically connected to the controller.

[0009] Preferably, the bottom of the protective sleeve is provided with a slide rail, and a bottom protective plate for sealing the bottom of the knife hole is slidably installed in the slide rail. The bottom protective plate is connected to the protective sleeve by a third return spring, and an insertion plate is integrally formed on the bottom of the bottom protective plate. A top guide slope is formed on the outer side of the insertion plate. A docking groove corresponding to the insertion plate is provided on the pressure plate, and the left and right sides of the docking groove are provided with mating slopes that cooperate with the top guide slope, thereby guiding the bottom protective plate to slide inward and opening the bottom of the knife hole.

[0010] Preferably, a support frame is fixedly installed on the frame, and the support frame has a feeding groove for holding the flexible connector workpiece. A pushing device is provided on the frame, and the pushing device includes a connecting frame that slides left and right along the bottom of the mounting base. A pushing column is fixed on the left side of the connecting frame, which is inserted into the feeding groove to squeeze the flexible connector workpiece located in the feeding groove onto the support column. A pushing plate is fixed on the right side of the connecting frame to push the flexible connector workpiece located on the support column out of the support column. An inclined guide hole is provided at the bottom of the side push plate, and a pushing slide rod that slides with the inclined guide hole is fixed on the connecting frame. The pushing slide rod is used to push the connecting frame left and right under the guidance of the inclined guide hole.

[0011] Preferably, the support frame is provided with a feeding device, and the feeding device includes a material rack that is plugged into and installed with the support frame. The material rack has a discharge channel corresponding to the feeding trough. The discharge channel is used to stack flexible joint workpieces and supply flexible joint workpieces into the feeding trough.

[0012] Preferably, a limiting plate for restricting the insertion position of the flexible joint workpiece is fixedly installed on the support column, and the limiting plate is provided with a limiting guide hole for being sleeved on the outside of the push plate to prevent the turntable from moving during the cutting process.

[0013] Preferably, a guide plate is fixedly installed at the bottom of the frame, and the guide plate is used to guide the processed flexible joint workpiece to move into the external collection device.

[0014] Compared with the prior art, the beneficial effects of the blade-concealed kerf cutting device of the present invention are:

[0015] 1. By concealing the cutting blade within the blade hole and enclosing it with a bottom protective plate, the system effectively prevents operators from accidentally touching the cutting blade and causing scratches, thus improving safety during use.

[0016] 2. By using the turntable and support column together, the material can be loaded on the outside of the frame, and then the turntable is used to transfer the flexible connector workpiece to the processing station, which effectively avoids manual operation under the cutting tool and further improves safety.

[0017] 3. By coordinating the pushing device and the feeding device, batch automatic loading and unloading operations can be achieved, which is not only safer, but also further improves production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the frame structure in this invention;

[0021] Figure 4 This is a schematic diagram of the protective sleeve in this invention;

[0022] Figure 5 This is a schematic diagram of the installation of the turntable and the mounting base in this invention;

[0023] Figure 6 This is a cross-sectional view of the turntable and mounting base in this invention.

[0024] Figure 7 This is a schematic diagram of the pushing device in this invention;

[0025] Figure 8 This is a schematic diagram of the installation of the feeding device and support frame in this invention;

[0026] Figure 9 This is a schematic diagram of the installation of the pushing device and the turntable in this invention.

[0027] In the diagram: 1. Frame; 2. Pushing device; 201. Pushing column; 202. Connecting frame; 203. Pushing plate; 204. Pushing slide bar; 3. Feeding device; 301. Discharging channel; 302. Material rack; 4. Central shaft; 5. One-way bearing; 6. Feeding trough; 7. Support frame; 8. Matching gear; 9. Turntable; 10. Limiting guide hole; 11. Limiting plate; 12. Mounting base; 13. Flexible joint workpiece; 14. Supporting column; 15. Ball head slide bar; 16. Rotating plate; 17. First re- 18. Position spring; 19. Arc-shaped mating groove; 20. Guide slide rod; 21. Second return spring; 22. Knife hole; 23. Protective sleeve; 24. Third return spring; 25. Insertion plate; 26. Slide rail; 27. Top guide slope; 28. Main push rod; 29. ​​Mounting plate; 30. Docking groove; 31. Mating slope; 32. Pressure plate; 33. Controller; 34. Guide slope; 35. Side push plate; 36. Cutting tool; 37. Rack; 38. Angled guide hole; 39. Bottom protection plate. Detailed Implementation

[0028] To clearly and completely describe the objectives and technical solutions of this invention, and to more clearly illustrate its advantages, the embodiments of this invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this invention, and are merely used to explain the embodiments of this invention. They are not intended to limit the embodiments of this invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0029] Example 1: Please refer to Figures 1 to 4This invention provides a concealed cutting tool device, including a frame 1. A mounting plate 28 for mounting cutting tools 35 is pushed from the top of the frame 1 by a main push rod 27. The cutting tools 35 are used to cut the ends of flexible joint workpieces 13. The number and shape of the cutting tools 35 can be selected according to the cutting needs. For example, a cross-shaped tool can be selected when a cross-shaped cut is needed. Similarly, when different depths or shapes of cuts need to be made on the same flexible joint workpiece 13, different cutting tools 35 of corresponding numbers and shapes can be selected for simultaneous cutting. Further details are omitted here. A controller 32 is fixedly mounted on the frame 1, and the main push rod 27 is a ball screw type electric push rod, electrically connected to the controller 32. A protective sleeve 22 is slidably mounted on the mounting plate 28 via a guide slide rod 19, and the top of the protective sleeve 22 is connected to the mounting plate 28 via a second return spring 20. The protective sleeve 22 is provided with a knife-concealing hole 21 for hiding the cutting tool 35, and a pressure plate 31 is fixed on the frame 1 for limiting the movement position of the protective sleeve 22. When the bottom of the protective sleeve 22 does not contact the top of the pressure plate 31, the protective sleeve 22 will move downward under the compression of the second return spring 20, thereby maintaining a specified distance between the protective sleeve 22 and the mounting plate 28. At this distance, the cutting edge of the cutting tool 35 will be completely inside the knife hole 21, thus avoiding direct contact between the operator and the cutting edge of the cutting tool 35, effectively reducing the operational risk. When the mounting plate 28 continues to descend, causing the protective sleeve 22 to be squeezed above the pressure plate 31, the distance between the protective sleeve 22 and the mounting plate 28 will gradually decrease until the cutting edge of the cutting tool 35 is exposed from below the knife hole 21 and squeezes above the flexible connector workpiece 13 to cut the flexible connector workpiece 13. After the cutting is completed, as the mounting plate 28 is lifted upward again by the main push rod 27, the cutting edge of the cutting tool 35 will also return to the knife hole 21. Then the mounting plate 28 and the protective sleeve 22 return to the highest position together.

[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 9A mounting base 12 is fixed on the frame 1, and a turntable 9 is rotatably mounted on the mounting base 12 via a central shaft 4. Four support columns 14 for connecting flexible joint workpieces 13 are fixed in a circular array on the turntable 9. The central shaft 4 can be symmetrically arranged on the left and right sides of the frame 1. Multiple turntables 9 can also be arranged in a linear array on each central shaft 4 as needed. Preferably, five turntables 9 are arranged on each central shaft 4. A gear 8 is mounted on the central shaft 4 via a one-way bearing 5, and the one-way bearing 5 only allows the central shaft 4 to rotate in one direction under the drive of the gear 8. A rack 36 that meshes with the gear 8 is mounted on the side of the mounting plate 28 via a side push plate 34, and the rack 36 can drive the gear 8 to rotate 90°. The one-way bearing 5 limits the rotation of the central shaft 4 to only one direction to facilitate the loading, cutting, and unloading of the flexible connector workpiece 13 at different positions. Specifically, the support column 14 is loaded at a horizontal position facing outward from the frame 1, that is, the flexible connector workpiece 13 is placed on the support column 14 manually or by other mechanisms. When the support column 14 rotates to face upward, the support column 14 is in the cutting position, and the cutting tool 35 cuts the workpiece at this position. The flexible connector workpiece 13 on the support column 14 is cut. After the cutting is completed, the support column 14 will continue to rotate in the same direction to a horizontal position facing the inside of the frame 1. At this position, the cut flexible connector workpiece 13 on the support column 14 can be removed from the support column 14 by other material discharge mechanism. Then the support column 14 continues to rotate in the same direction to a downward position. At this position, it can be manually checked whether there are any cut flexible connector workpieces 13 left on the support column 14. If so, they are manually removed. Then the support column 14 rotates in the same direction to a horizontal position facing the outside of the frame 1, and at this position, the loading operation of installing the flexible connector workpiece 13 onto the support column 14 is completed, thus completing one cycle.The above description shows the working principle of turntable 9 and support column 14. Therefore, the working principle of the one-way bearing 5 located on the central shaft 4 on the left side of frame 1 can now be described. Firstly, since rack 36 is only located at the bottom of side push plate 34, to achieve the above-mentioned working process of turntable 9, when mounting plate 28 is at its highest position, rack 36 is above the mating gear 8. When mounting plate 28 begins to descend, rack 36 meshes with mating gear 8 and drives mating gear 8 to rotate. At this time, one-way bearing 5 rotates normally, so central shaft 4 does not rotate. The meshing process of rack 36 and mating gear 8 ends when protective sleeve 22 descends to a specified height position before contacting pressure plate 31. At this time, rack 36 moves to below mating gear 8. As the rack 36 passes through the mating gear 8, the mating gear 8 rotates 90°. When the cutting process is complete and the rack 36 rises again, it will mesh with the mating gear 8 from below. At this time, the mating gear 8 begins to rotate, while the one-way bearing 5 cannot rotate. Therefore, the mating gear 8 will drive the central shaft 4 to rotate synchronously, completing the position change of the support column 14 on the central shaft 4. After the position change is completed, the rack 36 will disengage from the mating gear 8 and move to the top of the mating gear 8, thus completing one operation rotation. By using this method, the rack 36 can be used to drive the turntable 9 and the support column 14 to rotate intermittently in the preset working direction, thereby realizing the position change of the support column 14.

[0031] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 9A rotating plate 16 is fixed to the end of the central shaft 4, and four ball-head slide rods 15 are slidably mounted on the rotating plate 16 in a circumferential array. The ball-head slide rods 15 are connected to the rotating plate 16 through a first return spring 17, and an arc-shaped mating groove 18 corresponding to the ball head of the ball-head slide rod 15 is provided on the mounting base 12. The ball-head slide rods 15 and the arc-shaped mating groove 18 are used to lock the position of the turntable 9. Specifically, after the rack 36 completes the position conversion of the support column 14, to ensure that the turntable 9 will not rotate in the subsequent cutting process after the rack 36 leaves, the ball-head slide rods 15 need to insert their ball head into the arc-shaped mating groove 18 to restrict the rotation of the turntable 9 and the central shaft 4. When the rack 36 contacts the mating gear 8 and begins to drive... When the rotating center shaft 4 rotates, when the torque provided by the rotation of the center shaft 4 pushes the side of the arc-shaped mating groove 18 more than the squeezing force of the first return spring 17, the ball head of the ball head slide rod 15 will be squeezed out of the arc-shaped mating groove 18. Then the center shaft 4 and the turntable 9 can rotate normally and change the working position of the support column 14. After the position change is completed, the rack 36 leaves the meshing state with the mating gear 8, and at this time the ball head of the ball head slide rod 15 will slide back into the arc-shaped mating groove 18, thereby continuing to lock the position of the turntable 9 and the center shaft 4 under the drive of the first return spring 17, thereby effectively improving the positional accuracy of the turntable 9 and avoiding the machining error caused by the positional deviation of the turntable 9.

[0032] Please see Figure 1 , Figure 2 , Figure 7 , Figure 8 and Figure 9A support frame 7 is fixedly installed on the frame 1, and a feeding groove 6 for holding the flexible connector workpiece 13 is provided on the support frame 7. A pushing device 2 is provided on the frame 1, and the pushing device 2 includes a connecting frame 202 that slides left and right along the bottom of the mounting base 12. A pushing column 201 is fixed on the left side of the connecting frame 202, which is inserted into the feeding groove 6 to squeeze the flexible connector workpiece 13 located in the feeding groove 6 onto the support column 14. A pushing piece 203 is fixed on the right side of the connecting frame 202 to push the flexible connector workpiece 13 located on the support column 14 out of the support column 14. An inclined guide hole 37 is provided at the bottom of the side push plate 34, and a pushing slide rod 204 that slides with the inclined guide hole 37 is fixed on the connecting frame 202. The pushing slide rod 204 is used to push the connecting frame 202 left and right under the guidance of the inclined guide hole 37. The end shape of the push column 201 can be customized according to the shape of the flexible connector workpiece 13 to be pushed, generally it can be rod-shaped, tubular, etc., so as to facilitate the mating with the end face of the flexible connector workpiece 13. During loading, the flexible connector workpiece 13 is first correctly placed into the loading trough 6 by manual or other equipment. Then, the mounting plate 28 moves downward under the push of the main push rod 27. During this movement, the push slide 204 will also move towards the inside of the frame 1 under the push of the inclined guide hole 37. When the rack 36 moves to the bottom of the mating gear 8, the flexible connector workpiece 13 pushed by the push column 201 just begins to engage with the support column 14. At the same time, the push plate 203 also just contacts the already processed flexible connector workpiece 13. When the mounting plate 28 moves to the bottom of the stroke... When the machine is in operation, the push column 201 completely presses the flexible connector workpiece 13 onto the support column 14, while the push plate 203 pushes the processed flexible connector workpiece 13 completely off the support column 14. Then, the mounting plate 28 rises upwards. Before the rack 36 meshes with the mating gear 8 from below and drives the turntable 9 to rotate, the push column 201 and push plate 203 have already retracted to a position where they cannot interfere with the rotation of the turntable 9, driven by the inclined guide hole 37. Therefore, during this process, the push device 2 can be used to quickly load and unload the flexible connector workpiece 13. A guide plate 33 is fixedly installed at the bottom of the frame 1, and the guide plate 33 is used to guide the processed flexible connector workpiece 13 to move into the external collection device.

[0033] Working Principle: This device is used to cut slits at the end of the flexible connector workpiece 13, allowing the end of the processed flexible connector workpiece 13 to be in a slightly open state, facilitating connection with external equipment. This device effectively prevents the operator's hands from directly touching the bottom of the cutting blade 35, thus reducing the risk of the cutting blade 35 cutting the operator. Specifically, during the descent of the cutting blade 35, the cutting blade 35 is concealed within the blade-concealing hole 21 by the protective sleeve 22 until it is ready to cut the flexible connector workpiece 13. After cutting, the cutting blade 35 re-enters the blade-concealing hole 21, effectively reducing the chance of the operator directly touching the cutting edge of the cutting blade 35. Meanwhile, operators no longer need to put their hands under the cutting tool 35 to load and unload the flexible connector workpiece 13. Instead, the flexible connector workpiece 13 is installed on the side of the frame 1 onto the support column 14, and then transferred to the underside of the cutting tool 35 via the support column 14. This further reduces the chance of the operator's limbs coming into contact with the cutting tool 35, thereby effectively improving the safety of the equipment.

[0034] Example 2: Please refer to Example 1. The bottom of the protective sleeve 22 is provided with a slide 25, and a bottom protective plate 38 for sealing the bottom of the knife hole 21 is slidably installed in the slide 25. The bottom protective plate 38 is connected to the protective sleeve 22 through a third return spring 23. An insertion plate 24 is integrally formed at the bottom of the bottom protective plate 38. A top guide slope 26 is formed on the outer side of the insertion plate 24. A docking groove 29 corresponding to the insertion plate 24 is provided on the pressure plate 31. The left and right sides of the docking groove 29 are provided with a mating slope 30 that cooperates with the top guide slope 26 to guide the bottom protective plate 38 to slide inward and open the bottom of the knife hole 21. When the insertion plate 24 is not inserted into the docking slot 29, the bottom protective plate 38 will completely seal the bottom of the hidden knife hole 21. When the insertion plate 24 is inserted into the docking slot 29, the contact between the top guide slope 26 and the mating slope 30 will generate a force that pushes the bottom protective plate 38 toward the inside of the frame 1 during the descent of the insertion plate 24. Therefore, the bottom protective plate 38 will gradually open and expose the bottom of the hidden knife hole 21. Only then can the cutting tool 35 be exposed from the hidden knife hole 21. This method can effectively prevent the cutting tool 35 from being exposed before the protective sleeve 22 is in place. Specifically, it is to prevent the cutting tool 35 from being exposed when the operator wants to lift the protective sleeve 22 when not performing normal cutting operations. Especially during maintenance operations, the accidental lifting of the protective sleeve 22 due to the negligence of the relevant operators can be avoided in this way, thereby further improving safety.

[0035] Example 3: Please refer to Example 2. A limiting plate 11 for limiting the insertion position of the flexible connector workpiece 13 is fixedly installed on the support column 14. The limiting plate 11 is provided with a limiting guide hole 10 for sleeved on the outside of the push plate 203 to prevent the turntable 9 from moving during the cutting process. The limiting plate 11 is used to limit the installation position of the flexible connector workpiece 13, thereby ensuring the accuracy of the installation position of the flexible connector workpiece 13 each time. The limiting guide hole 10 is not only used to guide the push plate 203 into the correct position, but also to prevent the turntable 9 from rotating by means of the temporary sleeve between the limiting guide hole 10 and the push plate 203, thereby improving the cutting accuracy. Before the rack 36 meshes with the mating gear 8 from the bottom of the mating gear 8, the push plate 203 has already left the limiting guide hole 10, so it will not hinder the normal rotation of the turntable 9.

[0036] Example 4: Please refer to Example 3. The support frame 7 is provided with a feeding device 3. The feeding device 3 includes a material rack 302 that is plugged into the support frame 7. The material rack 302 has a discharge channel 301 corresponding to the feeding trough 6. The discharge channel 301 is used to stack the flexible connector workpieces 13 and supply the flexible connector workpieces 13 into the feeding trough 6. In this way, the flexible connector workpieces 13 can be stacked in the discharge channel 301 in advance and then automatically fall into the feeding trough 6 under the action of gravity. This makes it convenient for the push column 201 to squeeze the flexible connector workpieces 13 in the feeding trough 6 onto the support column 14 one by one, thereby realizing automatic feeding and effectively improving the work efficiency.

[0037] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A blade-concealed slitting device, comprising a frame (1), wherein a mounting plate (28) for mounting a cutting blade (35) is pushed on the top of the frame (1) by a main push rod (27), characterized in that: A protective sleeve (22) is slidably mounted on the mounting plate (28) via a guide slide rod (19), and the top of the protective sleeve (22) is connected to the mounting plate (28) via a second return spring (20). The protective sleeve (22) is provided with a knife-hiding hole (21) for hiding the cutting tool (35), and a pressure plate (31) for limiting the movement position of the protective sleeve (22) is fixed on the frame (1). The frame (1) is fixed with a mounting base (12), and the mounting base (12) is rotatably mounted with a turntable (9) via a central shaft (4). The turntable (9) is fixed with four support columns (14) for connecting flexible joint workpieces (13) in a circular array. The central shaft (4) is mounted with a mating gear (8) via a one-way bearing (5), and the one-way bearing (5) only allows the central shaft (4) to rotate in one direction under the drive of the mating gear (8). The side of the mounting plate (28) is mounted with a rack (36) that meshes with the mating gear (8) via a side push plate (34), and the rack (36) can drive the mating gear (8) to rotate 90°. The central shaft (4) is fixed with a rotating plate (16) at its end, and four ball-head slide rods (15) are slidably mounted on the rotating plate (16) in a circular array. The ball-head slide rods (15) are connected to the rotating plate (16) through a first return spring (17), and an arc-shaped mating groove (18) corresponding to the ball head part of the ball-head slide rod (15) is opened on the mounting base (12).

2. The concealed cutting device according to claim 1, characterized in that: A controller (32) is fixedly installed on the frame (1), and the main push rod (27) is a ball screw electric push rod, which is electrically connected to the controller (32).

3. The concealed cutting device according to claim 1, characterized in that: The bottom of the protective sleeve (22) is provided with a slide (25), and a bottom protective plate (38) for sealing the bottom of the knife hole (21) is slidably installed in the slide (25). The bottom protective plate (38) is connected to the protective sleeve (22) through a third return spring (23), and an insertion plate (24) is integrally formed on the bottom of the bottom protective plate (38). A top guide slope (26) is formed on the outer side of the insertion plate (24). A docking groove (29) corresponding to the insertion plate (24) is provided on the pressure plate (31), and a mating slope (30) is provided on the left and right sides of the docking groove (29) to cooperate with the top guide slope (26), thereby guiding the bottom protective plate (38) to slide inward and opening the bottom of the knife hole (21).

4. The concealed cutting device according to claim 1, characterized in that: A support frame (7) is fixedly installed on the frame (1), and a feeding groove (6) for holding the flexible connector workpiece (13) is provided on the support frame (7). A pushing device (2) is provided on the frame (1), and the pushing device (2) includes a connecting frame (202) that slides left and right along the bottom of the mounting base (12). A pushing column is fixed on the left side of the connecting frame (202) and inserted into the feeding groove (6) to press the flexible connector workpiece (13) located in the feeding groove (6) onto the support column (14). 201), and a pusher plate (203) for pushing the flexible joint workpiece (13) located on the support column (14) out of the support column (14) is fixed on the right side of the connecting frame (202). The bottom of the side push plate (34) is provided with an inclined guide hole (37), and a pusher slide (204) that slides with the inclined guide hole (37) is fixed on the connecting frame (202). The pusher slide (204) is used to push the connecting frame (202) left and right under the guidance of the inclined guide hole (37).

5. The concealed cutting device according to claim 4, characterized in that: The support frame (7) is provided with a feeding device (3), and the feeding device (3) includes a material rack (302) that is plugged into the support frame (7). The material rack (302) has a discharge channel (301) corresponding to the feeding groove (6). The discharge channel (301) is used to stack the flexible joint workpiece (13) and supply the flexible joint workpiece (13) into the feeding groove (6).

6. The blade-concealed slitting device according to claim 4, characterized in that: The support column (14) is fixedly installed with a limiting plate (11) for limiting the insertion position of the flexible connector workpiece (13), and the limiting plate (11) is provided with a limiting guide hole (10) for being sleeved on the outside of the push plate (203) to prevent the turntable (9) from moving during the cutting process.

7. The concealed cutting device according to claim 1, characterized in that: The bottom of the frame (1) is fixedly installed with a guide plate (33), and the guide plate (33) is used to guide the finished flexible joint workpiece (13) to move into the external collection device.

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