Multi-cutter cutting and carving trolley

Abstract

The multi-cutter cutting and carving trolley is characterized in that the multi-cutter cutting and carving trolley comprises a rack, a plurality of cutting mechanisms are arranged on the rack, and each cutting mechanism comprises a linear motion mechanism and a cutter assembly driven by the linear motion mechanism to do linear motion; the rack is further provided with a driving mechanism for driving the cutter assemblies of the multiple cutting mechanisms to rotate, a linkage plate driven by the multiple cutting mechanisms to do linear reciprocating motion and a position detector used for detecting the cutting depth positions of the multiple cutting mechanisms. Detection and position control of the cutting depth of the multiple cutting mechanisms are achieved through the driving mechanism and the position detector, the driving mechanism drives the multiple cutters to rotate, the vertical cutting action and position control of the cutters and active rotation of the cutters are achieved in combination with the action of the linear motion mechanism, and the cutting efficiency is improved. The cost is greatly reduced, the design space is reduced, and the cutting breadth is improved.

Description

Technical Field

[0001] The invention relates to die cutting and engraving equipment, in particular to a multi-knife cutting and engraving trolley. Background Art

[0002] The die cutting and engraving equipment in the prior art are equipped with a cutting mechanism for cutting or engraving the object to be cut or engraved, a linear mechanism for driving the cutting mechanism to move up and down, a rotating mechanism for driving the cutter in the cutting mechanism to rotate, and a detection mechanism for detecting and controlling the up and down movement position of the cutting mechanism; If several cutting mechanisms are set on the same trolley to realize multi-blade cutting and engraving, it is necessary to add several corresponding linear mechanisms, rotating mechanisms and detection mechanisms on the trolley. However, this method requires increasing the volume of the entire trolley to adapt to the required space, and the overall cost is high. Therefore, a multi-blade cutting and engraving trolley is proposed. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and to provide a multi-blade cutting and engraving trolley.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a multi-knife cutting and engraving trolley, which is characterized in that it includes a frame, and a plurality of cutting mechanisms are arranged on the frame, and the cutting mechanisms include a linear motion mechanism and a tool assembly driven by the linear motion mechanism to perform linear motion, and the frame is also provided with a driving mechanism for driving the tool assemblies of the plurality of cutting mechanisms to rotate, a linkage plate driven by the plurality of cutting mechanisms to perform linear reciprocating motion, and a position detector for detecting the cutting depth position of the plurality of cutting mechanisms, and the position detector includes a sensing unit installed on the linkage plate and a sensing unit installed on the frame.

[0005] Further preferably, the plurality of cutting mechanisms also include a connecting plate located above the linkage plate and in contact with the linkage plate, and driven by the linear motion mechanism to drive the tool assembly to move.

[0006] Further preferably, the tool assembly includes an active tool rod driven by a connecting plate, a tool rod rotating sleeve connected to the active tool rod, an active tool pulley installed on the outside of the tool rod rotating sleeve and connected to the driving mechanism, and the active tool rod and the tool rod rotating sleeve are connected by a key and a keyway.

[0007] Further preferably, the connecting plate is connected to a bearing sleeve on the tool rod driven by the connecting plate, and a bearing connected to the active tool rod is arranged in the bearing sleeve on the tool rod, and also includes a retaining edge and a limit member 2 arranged on the bearing sleeve on the tool rod to limit the upper and lower positions of the bearing on the bearing sleeve on the tool rod, and a positioning step and a limit member 4 arranged on the active tool rod to limit the matching position of the active tool rod and the bearing.

[0008] Further preferably, it further includes a multi-knife angle sensor mounting block installed at the bottom end of the frame and an infrared sensor installed on the multi-knife angle sensor mounting block for identifying the tool bit.

[0009] Further preferably, the frame further includes a lower support plate, an upper support plate for installing the sensing unit, and a trolley seat connecting the upper support plate and the lower support plate.

[0010] Further preferably, it further includes at least one first tension spring connecting the upper support plate and the linkage plate for driving the linkage plate to reset and at least one second tension spring connecting the upper support plate and the connecting plate for driving the connecting plate to reset.

[0011] Further preferably, it further includes a connecting block on the pressure plate, a first guide rod and a second guide rod connecting the upper support plate and the lower support plate, a linear bearing and a pressure plate linear bearing slidingly matched with the first guide rod, and a linkage linear bearing installed on the linkage plate and slidingly matched with the second guide rod. The linear bearing is installed on the connecting plate, and the pressure plate linear bearing is installed on the connecting block on the pressure plate.

[0012] Further preferably, it further includes a connecting block on the pressure plate installed on the pressure plate linear bearing, a second guide rod with one end fixedly connected to the connecting block on the pressure plate and slidingly connected to the lower support plate, a connecting member fixed on the connecting plate, movably connected to the connecting block on the pressure plate and driving the connecting block on the pressure plate to reset, a lower connecting block on the pressure plate movably connected to the other end of the second guide rod, and a pressure plate installed on the lower connecting block on the pressure plate.

[0013] Further preferably, the position detector is any one of a grating displacement sensor, a magnetic grating displacement sensor, a laser displacement sensor, a capacitive displacement sensor, a Hall effect sensor, or an inductive displacement sensor.

[0014] Advantages of the present invention: The device realizes the detection and position control of the cutting depth of several cutting mechanisms through a driving mechanism and a position detector. A driving mechanism drives a plurality of tool assemblies to rotate, and in combination with the action of the linear motion mechanism, realizes the up-and-down cutting action and position control of the cutting tool and the active rotation of the cutting tool, greatly reducing costs and design space while increasing the cutting width. At the same time, each cutting tool is an actively rotating tool, which can greatly improve the cutting finish and accuracy of the cutting object. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a partial structural schematic diagram of the present invention; Figure 3 is a partial structural schematic diagram of the present invention; Figure 4 is a partial sectional structural schematic diagram of the tool assembly in the present invention; Figure 5 is a partial structural schematic diagram of the present invention; Figure 6 is a partial sectional structural schematic diagram of the cutting mechanism in the present invention; Figure 7 is a structural schematic diagram of another perspective of the present invention; Figure 8 is a structural schematic diagram of the frame in the present invention.

[0016] Figure 9 is a structural schematic diagram of the frame in the present invention.

[0017] Legend: 1. Frame; 11. Lower support plate; 12. Upper support plate; 13. Trolley seat; 14. Guide rod 1; 14-1. Guide rod 2; 15. Linear bearing; 16. Pressure plate linear bearing; 17. Spring; 18. Linkage linear bearing; 2. Cutting mechanism; 21. Linear motion mechanism; 22. Active tool rod; 23. Tool rod lower bearing seat; 24. Tool rod rotating sleeve; 25. Active tool belt pulley; 26. Linkage plate; 27. Connecting piece; 28. Connecting plate; 29. Tool rod upper bearing sleeve; 290. Flange; 291. Bearing; 292. Positioning step; 293. Limiting piece 4; 294. Limiting piece 2; 3. Driving mechanism; 4. Position detector; 41. Photoelectric module; 42. Support; 43. Linear grating scale; 5. Tension spring 1; 51. Tension spring 2; 6. Tool bit; 61. Magnetic sheet; 8. Upper connecting block of pressure plate; 81. Guide rod 3; 82. Lower connecting block of pressure plate; 83. Pressure plate; 9. Anti-collision plug; 10. Multi-tool angle sensor mounting block; 101. Infrared sensor. Detailed implementation manners

[0018] Next, we will further explain a multi-tool cutting and engraving trolley according to the present invention with reference to the accompanying drawings.

[0019] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If this specific posture changes, the directional indications will also change accordingly.

[0020] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense; for example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0021] Refer to Figures 1-9As shown in the figure, a multi-knife cutting and engraving trolley, characterized in that it includes a frame 1, several cutting mechanisms 2 are arranged on the frame 1, each cutting mechanism 2 includes a linear motion mechanism 21 and a tool assembly driven by the linear motion mechanism 21 to perform linear motion, and a driving mechanism 3 for driving the tool assemblies of several cutting mechanisms 2 to rotate, a linkage plate 26 driven by several cutting mechanisms 2 to perform linear reciprocating motion, and a position detector 4 for detecting the cutting depth position of several cutting mechanisms 2 are also arranged on the frame 1. The position detector 4 includes a sensing unit installed on the linkage plate 26 and a sensing unit installed on the frame 1; Each of the several cutting mechanisms 2 also includes a connecting plate 28 located above the linkage plate 26 and in contact with the linkage plate 26, which is driven by the linear motion mechanism 21 to drive the tool assembly to move; In one embodiment, the position detector 4 is any one of a grating displacement sensor, a magnetic grating displacement sensor, a laser displacement sensor, a capacitive displacement sensor, a Hall effect sensor, an inductive displacement sensor, etc., which can detect the cutting depth position of the cutting mechanism 2; In this technical solution, we use a grating displacement sensor for further explanation; the linear grating scale 43 is used as the sensing unit and installed on the support 42 connected to the linkage plate 26, and the optoelectronic module 41 is installed on the upper support plate 12 to match the linear grating scale 43, and the position control of the up and down cutting actions of the cutting mechanism 2 is realized through the cooperation of the linear grating scale 43 and the optoelectronic module 41.

[0022] The driving mechanism 3 can adopt a driving motor, and the driving motor and the driving tool belt pulley 25 can be connected by a synchronous belt drive. When the driving motor starts, it can drive several driving tool belt pulleys 25 to rotate synchronously through the synchronous belt to drive several cutting tools to rotate; By setting the connecting plate 28 connected to the cutting mechanism, placing the connecting plate 28 above the linkage plate 26, installing the sensing unit on the linkage plate 26, and setting the sensing unit on the upper support plate 12, during the downward movement of the connecting plate 28 along with the cutting mechanism 2, it pushes the linkage plate 26 to move downward accordingly. The linkage plate 26 drives the sensing unit to move downward. When resetting upward, the connecting plate 28 is reset by the restoring force of the second tension spring 51, and when the linkage plate 26 resets upward, it is driven to reset by the restoring force of the first tension spring 5. Thus, the cutting depth of several cutting mechanisms 2 can be detected and position-controlled by one driving mechanism 3 and one position detector 4. One driving mechanism 3 drives multiple tool assemblies to rotate, and combined with the action of the linear motion mechanism 21, the up and down cutting actions and position control of the cutting tools and the active rotation of the cutting tools are realized; At the same time, each cutting tool is an active rotating tool, which can greatly improve the cutting smoothness and accuracy of the cutting object; By setting the connecting plate 28, and placing the connecting plate 28 above the linkage plate 26 but not fixedly connected, each individual connecting plate 28 corresponds to a cutting mechanism, and when an individual cutting mechanism moves downward, it will not drive other cutting mechanisms to move downward accordingly; In one embodiment, the tool assembly includes an active tool rod 22 driven by a connecting plate 28, a tool rod rotating sleeve 24 connected to the active tool rod 22, an active tool pulley 25 installed on the outside of the tool rod rotating sleeve 24 and connected to the driving mechanism 3 by transmission, and the active tool rod 22 and the tool rod rotating sleeve 24 are connected by a key and a keyway; a tool rod lower bearing seat 23 is installed on the lower support plate 11, and a bearing connected to the active tool rod is installed on the tool rod lower bearing seat 23; The linear motion mechanism 21 can be any one of other devices for realizing linear motion, such as a voice coil motor, a cylinder, an electric push cylinder, a push-pull electromagnet, a servo transmission mechanism or a synchronous belt transmission mechanism.

[0023] When moving up and down, the linear motion mechanism 21 drives the connecting plate 28, and the connecting plate 28 drives the active knife rod 22 to move up and down. When the active knife rod 22 rotates, the driving mechanism 3 drives the active knife pulley 25 to rotate through the synchronous belt, and the active knife pulley 25 drives the knife rod rotating sleeve 24 and the active knife rod 22 to rotate accordingly.

[0024] In one embodiment, it also includes a cutter head 6 detachably mounted on one end of the active cutter rod 22, and a magnetic sheet 61 magnetically connected to the cutter head 6 is also mounted on the active cutter rod 22; By providing the magnetic sheet 61 , the cutter head 6 and the active cutter rod 22 are magnetically connected via the magnetic sheet 61 , so that the cutter head 6 can be quickly replaced.

[0025] In one embodiment, the connecting plate 28 is connected to a tool bar upper bearing sleeve 29 driven by the connecting plate, and a bearing 291 connected to the active tool bar 22 is arranged in the tool bar upper bearing sleeve 29, and further includes a retaining edge 290 and a second limiting member 294 arranged on the tool bar upper bearing sleeve 29 to limit the upper and lower positions of the bearing 291 on the tool bar upper bearing sleeve 29, and a positioning step 292 and a fourth limiting member 293 arranged on the active tool bar 22 to limit the matching position of the active tool bar 22 and the bearing 291; By setting the positioning step 292, when the bearing sleeve 29 and the bearing 291 on the tool rod are driven downward by the connecting plate 28, the bearing 292 pushes the active tool rod 22 to move downward accordingly through the positioning step 292, and the position of the active tool rod 22 is limited by the setting of the limiting member 293. At the same time, when the bearing sleeve 29 and the bearing 291 on the tool rod are moved upward and reset, the active tool rod 22 is driven upward by the limiting member 293; the limiting member 294 is set to limit the bearing 291 to be installed in the bearing sleeve 29 on the tool rod; Through the arrangement of the retaining edge 290 and the second limiting member 294, the position of the bearing 291 installed on the bearing sleeve 29 of the tool bar is limited, preventing the bearing 291 from falling off the bearing sleeve 29 of the tool bar; Through the arrangement of the positioning step 292 and the fourth limiting member 293, the connection position between the driving tool bar 22 and the bearing 291 is limited, preventing the connection between the driving tool bar 22 and the bearing 291 from becoming disconnected and resulting in abnormal operation.

[0026] In one embodiment, it further includes a multi-knife angle sensor mounting block 10 installed at the bottom end of the frame 1 and an infrared sensor 101 installed on the multi-knife angle sensor mounting block 10 for identifying the tool head 6; Through the arrangement of the multi-knife angle sensor mounting block 10, a number of infrared sensors 101 for respectively identifying the tool heads 6 on each cutting mechanism 2 are installed. The several infrared sensors 101 are integrally installed on one multi-knife angle sensor mounting block 10. By measuring the rotation angle of the recognition surface on the tool head 6 with the infrared sensor 101, the type and specification of the tool head 6 are identified. There is a recognition surface for identifying the type and specification of the tool head 6 and a reference surface as the recognition reference on the tool head 6. The sizes of the recognition surfaces on different types and specifications of tool heads are different; different electrical signals are output when the infrared sensor irradiates the outer surface of the tool head and the recognition surface or the reference surface. When identifying the tool head 6, the tool head 6 rotates. During the rotation process, the tool head 6 is irradiated by the infrared sensor 101. According to the rotation angle of the tool head 6 between the first different electrical signal and the second different electrical signal output by the infrared sensor 101, if this rotation angle is the set rotation angle of the reference surface, the rotation of the tool head is continued. Wait to measure the rotation angle between two different electrical signals of another recognition surface to determine the specification category of the tool head 6. The rotation angles of different types and models of tool heads 6 are set in the control system in advance. By identifying different rotation angles, the specification type of the tool head 6 is judged, preventing the misinstallation of the tool head 6.

[0027] In one embodiment, the frame 1 further includes a lower support plate 11, an upper support plate 12 for installing the sensing unit, and a trolley seat 13 connecting the upper support plate 12 and the lower support plate 11; a slider connected to the slide rail of the die-cutting or cutting equipment is installed on the trolley seat 13 for installing the entire trolley on the die-cutting or engraving equipment.

[0028] In one embodiment, it further includes at least one first tension spring 5 connecting the upper support plate 12 and the linkage plate 26 for driving the linkage plate 26 to reset and at least one second tension spring 51 connecting the upper support plate 12 and the connecting plate 28 for driving the connecting plate 28 to reset; Through the arrangement of several first tension springs 5, it is used to drive the linkage plate 26 to reset. Through the arrangement of the second tension spring 51, it is used to drive the connecting plate 28 to reset.

[0029] In one embodiment, it further includes a connecting block 8 on the pressure plate, a first guide rod 14 and a second guide rod 14-1 connecting the upper support plate 12 and the lower support plate 11, a linear bearing 15 slidably engaged with the first guide rod 14 and a pressure plate linear bearing 16, a linkage linear bearing 18 mounted on the linkage plate 26 and slidably engaged with the second guide rod 14-1, and a spring 17 sleeved on the first guide rod 14 and located between the pressure plate linear bearing 16 and the linear bearing 15. The linear bearing 15 is mounted on the connecting plate 28, and the pressure plate linear bearing 16 is mounted on the connecting block 8 on the pressure plate; It further includes a third guide rod 81 with one end fixedly connected to the connecting block 8 on the pressure plate and passing through the lower support plate 11, a connecting member 27 fixed on the connecting plate 28 and movably connected to the connecting block 8 on the pressure plate to drive the connecting block 8 on the pressure plate to reset, a lower connecting block 82 on the pressure plate movably connected to the other end of the second guide rod 81, and a pressure plate 83 mounted on the lower connecting block 82 on the pressure plate; By connecting the connecting block 8 on the pressure plate, the lower connecting block 82 on the pressure plate and the pressure plate 83 to the connecting plate 28, during the downward movement of the connecting plate 28, the pressure plate 83 is driven to move downward, eliminating the need for an additional separate power device to drive the pressure plate 83 to move, saving the overall volume and cost at the same time; During the downward movement of the connecting plate 28, the linear bearing 15 is driven to move downward. During the downward movement of the linear bearing 15, the pressure plate linear bearing 16, the connecting block 8 on the pressure plate, the lower connecting block 82 on the pressure plate and the pressure plate 83 are pushed downward by the spring 17, and the workpiece to be cut is elastically clamped by the pressure plate 83; When the connecting plate 28 is reset upward by the restoring force of the second tension spring 51 and the spring 17, the connecting member 27 fixedly connected thereto is driven to move upward. During the upward movement of the connecting member 27 until the tail end of the connecting member 27 abuts against the connecting block 8 on the pressure plate, the connecting block 8 on the pressure plate, the pressure plate linear bearing 16, the lower connecting block 82 on the pressure plate and the pressure plate 83 are driven to move upward and reset.

[0030] In one embodiment, it further includes an anti-collision plug 9 mounted on the upper support plate 12 to protect the linear bearing 15; through the arrangement of the anti-collision plug 9, when the linear bearing 15 moves upward and resets, it plays a buffering role to prevent the linear bearing 15 from directly contacting the upper support plate 12 and colliding.

[0031] During use: By connecting the trolley to the moving mechanisms in other directions (such as the X-axis direction and the Y-axis direction) on the die-cutting and engraving equipment, the trolley is then driven to move above the object to be cut, and then the drive mechanism 3 is controlled to start. The drive mechanism 3 drives the active tool rod 22 in several tool assemblies to rotate, thereby driving the tool head 6 to rotate. Then, one or several linear motion mechanisms 21 are controlled to start. The linear motion mechanism 21 drives the active tool rod 22 and the tool head 6 to perform up and down movements. The up and down movement positions are detected by the position detector 4 and controlled according to the set positions. Then, the die-cutting and engraving equipment drives the trolley to move according to the set movement trajectory to complete the cutting or engraving of the object to be cut. When cutting or engraving, the tool head for realizing the cutting or engraving function can be replaced according to the working requirements.

[0032] In addition, in one embodiment, the present invention also has a cutting compensation function. During operation, one or more tool heads can be replaced with tool heads for testing the flatness of the table surface of the die-cutting and engraving equipment (the tool heads can be smooth and non-cutting tool heads). The linear motion mechanism 21 is started and drives the tool assembly to move towards the table surface so that the test tool head contacts the table surface. After contact, the trolley is driven to move above the table surface by the moving mechanism in other directions (the movement trajectory can be set according to the shape trajectory of the object to be cut or engraved, or can also be not set according to the shape trajectory of the object to be cut or engraved). During the movement, when moving to the protruding position of the table surface, the tool assembly drives the connecting plate 28 to move upward. When the connecting plate moves upward, the linkage plate 26 is driven to move upward with it by the restoring force of the first tension spring 5. When the linkage plate 26 moves upward, it drives the sensing unit to move upward. The position of the sensing unit is monitored by the sensing unit and transmitted to the control system of the die-cutting and engraving equipment. The control system records its positions on the X and Y axes and the height position monitored by the position detector 4 according to the moving distances of the moving mechanisms in the X and Y axis directions; When moving to the concave position, because the linear motion mechanism 21 maintains a downward pushing force during the movement, when moving to the concave position, the linear motion mechanism 21 drives the connecting plate 28. While the connecting plate 28 drives the tool assembly to move downward, it also pushes the linkage plate 26 to move downward. When the linkage plate 26 moves downward, it drives the sensing unit to move downward. The position of the sensing unit is monitored by the sensing unit and transmitted to the control system of the die-cutting and engraving equipment. The control system records its position and the monitored high and low positions according to the moving distances of the tool assembly in the X and Y axes at this time; After the movement is completed according to the set movement trajectory, the control system forms a height compensation based on the recorded X, Y, and high and low position points. The control system performs cutting depth compensation on the movement trajectory through the height compensation. Subsequently, when the die-cutting and engraving equipment drives the trolley to move according to the set moving trajectory to complete the cutting or engraving of the object to be cut, the height position of the tool assembly is compensated according to the cutting depth compensation to ensure that the cutting or engraving depth of the object to be cut is consistent and the processing quality is guaranteed.

[0033] The protection scope of the present invention is not limited to the above embodiments and their transformations. Conventional modifications and replacements made by those skilled in the art based on the content of this embodiment all fall within the protection scope of the present invention.

Claims

1. A multi-blade cutting and engraving trolley, characterized by The invention comprises a frame (1), a plurality of cutting mechanisms (2) being arranged on the frame (1), the cutting mechanisms (2) each comprising a linear motion mechanism (21) and a tool assembly driven by the linear motion mechanism (21) to perform linear motion, the frame (1) also comprising a driving mechanism (3) for driving the tool assemblies of the plurality of cutting mechanisms (2) to rotate, a linkage plate (26) driven by the plurality of cutting mechanisms (2) to perform linear reciprocating motion, and a position detector (4) for detecting the cutting depth position of the plurality of cutting mechanisms (2), the position detector (4) comprising a sensing unit mounted on the linkage plate (26) and a sensing unit mounted on the frame (1).

2. The multi-blade cutting and engraving trolley according to claim 1, characterized in that: The plurality of cutting mechanisms (2) also include a connecting plate (28) located above the linkage plate (26), in contact with the linkage plate (26), and driven by the linear motion mechanism (21) to drive the tool assembly to move.

3. The multi-blade cutting and engraving trolley according to claim 2, characterized in that: The tool assembly comprises an active tool rod (22) driven by a connecting plate (28), a tool rod rotating sleeve (24) connected to the active tool rod (22), and an active tool pulley (25) mounted on the outside of the tool rod rotating sleeve (24) and connected to the driving mechanism (3); the active tool rod (22) and the tool rod rotating sleeve (24) are connected by a key and a keyway.

4. The multi-blade cutting and engraving trolley according to claim 3, characterized in that: The connecting plate (28) is connected to a knife rod upper bearing sleeve (29) driven by the connecting plate, and a bearing (291) connected to the active knife rod (22) is arranged in the knife rod upper bearing sleeve (29), and also includes a retaining edge (290) and a second limiting member (294) arranged on the knife rod upper bearing sleeve (29) to limit the upper and lower positions of the bearing (291) on the knife rod upper bearing sleeve (29), and a positioning step (292) and a fourth limiting member (293) arranged on the active knife rod (22) to limit the matching position of the active knife rod (22) and the bearing (291).

5. The multi-blade cutting and engraving trolley according to claim 4, characterized in that: It also includes a multi-tool angle sensor mounting block (10) mounted on the bottom end of the frame (1) and an infrared sensor (101) mounted on the multi-tool angle sensor mounting block (10) for identifying a tool head (6).

6. The multi-blade cutting and engraving trolley according to claim 5, characterized in that: The frame (1) further comprises a lower support plate (11), an upper support plate (12) on which the sensing unit is mounted, and a trolley seat (13) connecting the upper support plate (12) and the lower support plate (11).

7. The multi-blade cutting and engraving trolley according to claim 6, characterized in that: It also includes at least one tension spring (5) connected to the upper support plate (12) and the linkage plate (26) for driving the linkage plate (26) to reset, and at least one tension spring (51) connected to the upper support plate (12) and the connection plate (28) for driving the connection plate (28) to reset.

8. The multi-blade cutting and engraving trolley according to claim 7, characterized in that: The pressure plate also includes a connecting block (8) on the pressure plate, a guide rod 1 (14) and a guide rod 2 (14-1) connecting the upper support plate (12) and the lower support plate (11), a linear bearing (15) and a pressure plate linear bearing (16) that are slidably matched with the guide rod 1 (14), a linkage linear bearing (18) mounted on a linkage plate (26) and slidably matched with the guide rod 2 (14-1), and a spring (17) sleeved on the guide rod 1 (14) and located between the pressure plate linear bearing (16) and the linear bearing (15), wherein the linear bearing (15) is mounted on the connecting plate (28), and the pressure plate linear bearing (16) is mounted on the connecting block (8) on the pressure plate.

9. The multi-blade cutting and engraving trolley according to claim 8, characterized in that: It also includes a guide rod three (81) having one end fixedly connected to the upper connecting block (8) of the pressure plate and passing through the lower support plate (11), a connecting piece (27) fixed to the connecting plate (28) and movably connected to the upper connecting block (8) of the pressure plate and driving the upper connecting block (8) of the pressure plate to reset, and the other end of the guide rod two (81) is connected to the lower connecting block (82) of the pressure plate and a pressure plate (83) mounted on the lower connecting block (82) of the pressure plate.

10. The multi-blade cutting and engraving trolley according to claim 1, characterized in that: The position detector (4) is any one of a grating displacement sensor, a magnetic grating displacement sensor, a laser displacement sensor, a capacitive displacement sensor, a Hall effect sensor, or an inductive displacement sensor.

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