Intelligent precise displacement fine adjustment device

Abstract

The invention provides an intelligent precise displacement fine adjustment device which is installed in a die-cutting machine platform, and the die-cutting machine platform comprises an upper platform, a lower platform, a base plate, a die-cutting back plate and a die-cutting knife plate. The bottom of the upper platform is fixedly connected with the base plate, the die-cutting back plate and the die-cutting rule plate are sequentially connected from top to bottom, the fine adjustment device is arranged in the upper platform, and a lower pressure head of the fine adjustment device penetrates through the base plate and can make contact with the die-cutting back plate, so that pressure supplementing operation on a die-cutting rule body of the die-cutting rule plate is achieved. The die-cutting rule body is used for cutting or creasing paper on the lower platform; the upper platform is provided with a first matching hole and a second matching hole, and the base plate is provided with a third matching hole. In the die cutting process, automatic pressure monitoring can be achieved, the point to be subjected to pressure supplementing and the pressure supplementing amount can be automatically determined, and pressure supplementing operation of local points is achieved through the precise displacement fine adjustment mechanism.

Description

Technical Field

[0001] The present invention belongs to the field of die-cutting and stamping equipment, and particularly relates to an intelligent precision displacement fine-tuning device. Background Art

[0002] During the preparation of packaging boxes, it is usually necessary to use a die-cutting machine to cut or indent various paper products. During the die-cutting process, the paper to be die-cut runs upward with the lower platform to the position of the die-cutting knife, and the paper to be die-cut is cut or indented under pressure. However, during the production process, since the surface of the paper is not a perfect plane, and the bottoms of the cutting knives and the indentation lines on the die-cutting plate cannot be completely in the same plane, this results in incomplete cutting or insufficient indentation in some areas of the cut paper, affecting the yield rate.

[0003] Then it is necessary to perform supplementary pressing on the die-cutting knife or the indentation line. However, the supplementary pressing in die-cutting is a very small pressure. How to finely adjust and control the intensity of this supplementary pressing is a problem that is difficult to overcome; and there are also the following problems. It is difficult to detect and feedback the pressure accurately and in a timely manner during fine adjustment. Summary of the Invention

[0004] In view of this, the present invention aims to provide an intelligent precision displacement fine-tuning device to solve the problem that the stroke of the above-mentioned fine adjustment is difficult to control.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] An intelligent precision displacement fine-tuning device is installed in the die-cutting machine platform, and includes a fine-tuning mechanism and a pressure head assembly; the fine-tuning mechanism is installed in the die-cutting machine platform, a guiding mechanism is provided between the pressure head assembly and the die-cutting machine platform, and the locking taper rod of the fine-tuning mechanism is threadedly connected to the upper pressure head of the pressure head assembly. Under the action of the guiding mechanism, the rotation of the fine-tuning mechanism can cause the pressure head assembly to generate an axial displacement.

[0007] Further, the pressure head assembly includes a pressure head group and a pressure sensor. The rotation of the fine-tuning mechanism causes the pressure head group to generate an axial displacement. The pressure sensor is installed on the pressure head group or on the die-cutting plate of the die-cutting machine and is used to detect the force received by the die-cutting knife and / or the indentation line of the die-cutting machine; a guiding mechanism is provided between the pressure head group and the die-cutting machine platform, and both the pressure sensor and the fine-tuning mechanism are electrically connected to the controller.

[0008] Further, the pressure head group includes an upper pressure head and a lower pressure head, and a pressure sensor is clamped between the upper pressure head and the lower pressure head. The fine-tuning mechanism drives the adjustment screw to rotate, causing the upper pressure head to generate an axial displacement, and realizing the synchronous axial movement of the upper pressure head, the lower pressure head, and the pressure sensor.

[0009] Further, the fine-tuning mechanism includes a locking taper rod, an adjusting screw, and a locking assembly. The locking taper rod is disposed in the first mating hole of the die-cutting machine platform for limiting the locking taper rod. One end of the adjusting screw is connected to the locking taper rod, and the other end is connected to the pressure head assembly in the second mating hole.

[0010] A locking assembly is provided between the locking taper rod and the adjusting screw, which can lock the adjusting screw.

[0011] Further, the locking assembly includes an unlocking ejector rod, an unlocking bolt, a spacer sleeve, and a tapered sleeve. The unlocking ejector rod is disposed in the inner cavity of the locking taper rod, and two first long circular holes are provided on both sides of the locking taper rod. The unlocking bolt passes through the locking taper rod and the unlocking ejector rod, and the unlocking bolt is disposed in the first long circular hole, thereby realizing the up and down movement of the unlocking ejector rod in the inner cavity of the locking taper rod.

[0012] The locking taper rod sleeved with the spacer sleeve and the tapered sleeve is installed in the first mating hole, and an unlocking compression spring is provided in the first mating hole. The end face of the tapered sleeve is connected to the first mating hole through the unlocking compression spring.

[0013] Further, a third mating hole is also provided on the backing plate of the die-cutting machine platform. The upper pressure head is threadedly connected to the adjusting screw, and the upper pressure head is disposed in the second mating hole of the die-cutting machine. The second mating hole is used to limit the upper pressure head, and the lower pressure head is disposed in the third mating hole. A disc spring is provided between the stepped surface of the lower pressure head and the stepped surface of the third mating hole. The disc spring provides an upward acting force for the lower pressure head to realize the close fit between the lower pressure head, the pressure sensor, and the upper pressure head. The upper pressure head bears the force generated by the closing pressure of the platform and transmits this force to the pressure sensor.

[0014] Further, the fine-tuning mechanism is provided with an origin positioning component that cooperates with the pressure head assembly. The origin positioning component can contact the pressure head assembly and is used to judge whether the fine-tuning mechanism reaches zero.

[0015] Further, the second mating hole is a stepped hole. The stepped structure at the end of the adjusting screw forms an axial limit with the second mating hole. The end of the adjusting screw is provided with an origin positioning component, and the origin positioning component is a mechanical origin pin.

[0016] A notch is provided at the top of the upper pressure head of the pressure head assembly, and the notch forms two positioning surfaces at the top of the upper pressure head that can cooperate with the mechanical origin pin. When the lower surface of the lower pressure head of the pressure head assembly is aligned with the lower surface of the backing plate, the mechanical origin pin fits with the positioning surface of the upper pressure head.

[0017] Further, the guiding mechanism includes an upper guiding pin, an upper guiding groove, a lower guiding groove, and a lower guiding pin. The upper guiding pin is disposed on the upper pressure head, and the upper guiding groove is disposed in the second mating hole. The lower guiding pin is disposed on the lower pressure head, and the lower guiding groove is disposed in the third mating hole.

[0018] Further, a long circular hole is provided on each side of the spacer sleeve. A hexagonal screw passes horizontally through the long circular hole and is threadedly connected to the locking taper rod, and then contacts the adjusting screw rod, so as to fix the locking taper rod and the locking taper rod

[0019] Compared with the prior art, the intelligent precision displacement fine-tuning device of the present invention has the following advantages:

[0020] (1) The intelligent precision displacement fine-tuning device of the present invention has a compact structure, can be arranged in an array within the entire die-cutting width, and perform supplementary pressing on local points.

[0021] (2) The intelligent precision displacement fine-tuning device of the present invention uses a fine-threaded screw to perform distance fine-tuning, and solves the cumulative error generated during the adjustment process by setting a mechanical zero point.

[0022] (3) The intelligent precision displacement fine-tuning device of the present invention uses a taper rod and a taper sleeve to prevent loosening, and uses a ejector rod to squeeze and unlock, which is simple to operate and convenient for automated operation; it has a function of preventing loosening, and prevents the adjustment amount from changing due to vibration during the die-cutting process.

[0023] (4) The intelligent precision displacement fine-tuning device of the present invention is provided with a pressure monitoring sensor, which can realize real-time monitoring of the die-cutting pressure, and perform data processing through a controller, and transmit the real-time pressure data, the points to be supplemented with pressure, and the amount of pressure to be supplemented to the display screen.

[0024] (5) The intelligent precision displacement fine-tuning device of the present invention has a separate setting of the pressure head assembly, which can ensure an independent setting space for the pressure sensor, so that the purpose of single damage and single replacement can be achieved, and it is convenient for later maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 is a schematic diagram of the fine-tuning device of the present invention embodiment installed on the die-cutting machine platform;

[0027] Figure 2 is a schematic diagram of the die-cutting machine platform of the present invention embodiment;

[0028] Figure 3 is a cross-section of the fine-tuning device of the present invention embodiment installed on the die-cutting machine platform Figure 1 ;

[0029] Figure 4 is a schematic diagram of the fine-tuning device of the present invention embodiment;

[0030] Figure 5 Cross-sectional view of the fine-tuning device according to the embodiment of the present invention installed on the die-cutting machine platform Figure 2 ;

[0031] Figure 6 Schematic diagram of the anti-loosening state according to the embodiment of the present invention;

[0032] Figure 7 Schematic diagram of Embodiment 2 of the guiding mechanism according to the embodiment of the present invention;

[0033] Figure 8 Schematic diagram of Embodiment 3 of the guiding mechanism according to the embodiment of the present invention.

[0034] Explanation of reference numerals:

[0035] 1. Upper platform; 2. Cushion plate; 3. Die-cutting back plate; 4. Die-cutting plate; 5. Paper to be die-cut; 6. Lower platform; 7. Die-cutting knife; A. Fine-tuning device; A1. Unlocking ejector rod; A2. Locking taper rod; A3. Unlocking bolt; A4. Spacer sleeve; A5. Hexagon screw; A6. Taper sleeve; A7. Unlocking compression spring; A8. Washer; A9. Adjusting screw; A10. Upper pressure head; A11. Upper guide pin; A111. Lower guide pin; A12. Mechanical origin pin; A13. Pressure sensor; A14. Lower pressure head; A15. Disc spring; 61. Eccentric shaft; 62. Eccentric column; 63. Guide groove; 64. Upper wedge column; 65. Guide block; 66. Lower wedge column; 71. Adjusting shaft; 72. Guide pin; 73. Guide post; 74. Guide groove. Detailed implementation manners

[0036] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. 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.

[0039] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0040] An intelligent precision displacement fine-tuning device A, as Figures 1-2 shown, includes an upper platform 1, a lower platform 6, a backing plate 2, a die-cutting backing plate 3, a die-cutting plate, and a fine-tuning device A; the bottom of the upper platform 1, the backing plate 2 is fixedly connected, the die-cutting backing plate 3, and the die-cutting plate are connected in sequence from top to bottom.

[0041] A plurality of fine-tuning devices A are arranged in an array and embedded in the upper platform 1. The downward pressure of the fine-tuning device A can pass through the backing plate 2 and be in contact with the die-cutting backing plate 3, so as to realize the supplementary pressing operation on the die body 7 of the die-cutting plate. The die body 7 is used for cutting or indentation operation on the paper of the lower platform 6.

[0042] The upper platform 1 and the backing plate 2 are bolted. The upper surface of the die-cutting backing plate 3 and the die-cutting plate are closely attached. The die body 7 is embedded in the die-cutting plate, and the back of the die body 7 is in contact with the die-cutting backing plate 3. When the lower platform 6 moves up and down or the upper platform 1 moves up and down, the upper platform 1 or the lower platform 6 moves relative to each other to complete cutting or indentation. In one way of explanation, the paper to be die-cut 5 follows the lower platform 6 and moves upward to the die body 7, and under the pressure provided by the lower platform 6, the cutting or indentation of the paper to be die-cut 5 is completed, where the axis of the fine-tuning device A is perpendicular to the die-cutting backing plate 3.

[0043] The upper platform 1 is provided with a first mating hole and a second mating hole, and the backing plate 2 is provided with a third mating hole.

[0044] The pressing head assembly includes a pressing head group and a pressure sensor A13. The fine-tuning mechanism rotates to cause the pressing head group to generate an axial displacement. The pressure sensor A13 is installed on the pressing head group or the die-cutting plate 4 of the die-cutting machine and is used to detect the force received by the die 7 and / or the indentation line of the die-cutting machine. A guiding mechanism is provided between the pressing head group and the die-cutting machine platform. The pressure sensor A13 is electrically connected to the controller, and both the fine-tuning mechanism and the controller are electrically connected.

[0045] The indenter group includes an upper indenter A10 and a lower indenter A14, a pressure sensor A13 is clamped between the upper indenter A10 and the lower indenter A14, the fine adjustment mechanism drives the adjustment screw A9 to rotate, and the upper indenter A10 generates an axial displacement to realize the synchronous axial movement of the upper indenter A10, the lower indenter A14 and the pressure sensor A13.

[0046] Preferably, as Figures 3-6 shown, the fine adjustment device A includes a locking taper rod A2 and an adjustment screw A9. The locking taper rod A2 is arranged in the first mating hole; one end of the adjustment screw A9 is connected to the locking taper rod A2, and the other end passes through the first mating hole to the second mating hole and is connected to the indenter assembly; a locking assembly is provided between the locking taper rod A2 and the adjustment screw A9 to lock the adjustment screw A9; the rotation of the locking taper rod A2 can realize the up and down fine adjustment of the indenter assembly.

[0047] In the locked state, the locking assembly brakes the locking taper rod A2 to prevent the locking taper rod A2 from rotating; through unlocking treatment, the braking of the locking assembly on the locking taper rod A2 is released, and the rotation of the locking taper rod A2 can be realized.

[0048] The locking assembly includes an unlocking ejector rod A1, an unlocking bolt A3, a spacer sleeve A4 and a taper sleeve A6; the unlocking ejector rod A1 is arranged in the inner cavity of the locking taper rod A2, and two first long circular holes are provided on both sides of the locking taper rod A2; the unlocking bolt A3 passes through the locking taper rod A2 and the unlocking ejector rod A1, and the unlocking bolt A3 is arranged in the first long circular hole, so that the unlocking ejector rod A1 can move up and down in the inner cavity of the locking taper rod A2; the locking taper rod A2 sleeved with the spacer sleeve A4 and the taper sleeve A6 is installed in the first mating hole, and the spacer sleeve A4 is above the taper sleeve A6; and an unlocking compression spring A7 is provided in the first mating hole, and a washer A8 is provided under the unlocking compression spring A7. The end face of the taper sleeve A6 is connected to the bottom of the first mating hole through the unlocking compression spring A7, and the unlocking compression spring A7 always provides an upward force for the taper sleeve A6 to ensure that the taper sleeve A6 always presses the locking taper rod A2 to achieve the purpose of locking.

[0049] Preferably, as Figure 6 shown, the taper formed by the inner surfaces of the spacer sleeve A4 and the taper sleeve A6 fits the taper formed by the outer surface of the locking taper rod A2. An unlocking space is formed between the locking taper rod A2 and the inner wall of the first mating hole. The spacer sleeve A4 and the taper sleeve A6 are inserted into the unlocking space and are squeezed against the outer contour of the locking taper rod A2 to fill the unlocking space, which can lock the locking taper rod A2 to achieve a loosening prevention state; if unlocking is required, the situation of filling the unlocking space needs to be removed.

[0050] The taper formed by the inner surfaces of the spacer sleeve A4 and the taper sleeve A6 and the outer surface of the locking taper rod A2 are similar to the cooperation of two wedge-shaped structures. By moving and misaligning the adjustment, the width between the two wedge-shaped structures can be changed.

[0051] The unlocking ejector rod A1 drives the unlocking bolt A3 to squeeze the tapered sleeve A6 to achieve unlocking. Other methods such as using threaded extrusion of the tapered sleeve A6 or directly squeezing the tapered sleeve A6 can also achieve unlocking.

[0052] Preferably, as Figures 3-5 shown, the upper pressure head A10 is threadedly connected to the adjusting screw A9. Here, the thread connection uses a fine-pitch thread, which has high adjustment precision and can withstand the die-cutting force to achieve fine adjustment. The upper pressure head A10 is arranged in the second fitting hole, the lower pressure head A14 is arranged in the third fitting hole, the pressure sensor A13 is arranged between the upper pressure head A10 and the lower pressure head A14. The upper pressure head A10 and the second fitting hole form a guiding mechanism, and by rotating the adjusting screw A9, the up-and-down fine adjustment of the upper pressure head A10 can be realized.

[0053] Preferably, the third fitting hole is a stepped hole, the lower pressure head A14 is a stepped structure, and a disc spring A15 is arranged between the stepped surface of the lower pressure head A14 and the stepped surface of the third fitting hole. The disc spring A15 provides an upward acting force for the lower pressure head A14 to achieve close fitting between the lower pressure head A14, the pressure sensor A13, and the upper pressure head A10, ensuring that the pressure sensor A13 can monitor the pressure value in real time. And the pressure sensor A13 is connected to the controller during use, and the controller receives the pressure value and then makes a corresponding response.

[0054] Preferably, a guiding groove is arranged in the third fitting hole, and a lower guiding pin A111 is arranged on one side of the lower pressure head A14. The lower guiding pin A111 cooperates with the guiding groove to realize linear guiding of the lower pressure head A14;

[0055] The guiding mechanism includes an upper guiding pin A11 and a guiding groove. The upper guiding pin A11 is connected to one side of the upper pressure head A10. A guiding groove is arranged in the second fitting hole, and the upper guiding pin A11 cooperates with the guiding groove to realize linear guiding of the upper pressure head A10;

[0056] As Figure 7 shown, as the second embodiment for controlling the axial displacement of the upper pressure head, the guiding mechanism of the pressure head assembly further includes an eccentric shaft 61, an upper wedge column 64, a lower wedge column 66, and a guiding block 65. The eccentric column 62 of the eccentric shaft 61 is connected to the guiding groove 7463 of the upper wedge block. The upper wedge column 64 is connected to the lower wedge column 66 through the guiding block 65; by rotating the eccentric shaft 61, the upper wedge block moves under the guiding of the guiding block 65. The connecting surface between the lower wedge column 66 and the upper wedge column 64 is an inclined surface, thereby controlling the axial movement of the lower wedge column 66. In actual use, the lower wedge column 66 is connected to the upper pressure head.

[0057] As Figure 8 shown, as the third embodiment for controlling the axial displacement of the upper pressure head, the guiding mechanism of the pressure head assembly further includes an adjusting shaft 71, a guiding pin 72, and a guiding column 73;

[0058] The circumferential surface of the adjusting shaft 71 is provided with a guide pin 72, and the guide shaft is provided with a guide groove 7463 which is an inclined groove. The guide pin 72 cooperates with the guide groove 7463. The guide post 73 is connected to the upper pressure head. By rotating the adjusting shaft 71, the guide post 73 generates an axial displacement.

[0059] At the same time, a guiding mechanism is set for the upper pressure head A10 and the lower pressure head A14, so that the upper pressure head A10 and the lower pressure head A14 can be in a more accurate position, reducing the operation error.

[0060] Preferably, the second mating hole is a stepped hole. The stepped structure of the adjusting screw A9 forms an axial limit with the second mating hole. The adjusting screw A9 is provided with a mechanical origin pin A12. The top of the upper pressure head A10 is provided with a notch, and the notch forms two positioning surfaces on the top of the upper pressure head that can cooperate with the mechanical origin pin. When the lower surface of the lower pressure head A14 is aligned with the lower surface of the backing plate 2, the mechanical origin pin A12 fits with the positioning surface of the upper pressure head A10 as a reference. By rotating the adjusting screw A9, the mechanical origin pin A12 rotates simultaneously. When the positioning surface of the upper pressure head contacts the mechanical origin pin, if the torque output by the supplementary pressing motor reaches the set value, it is determined that the fine adjustment mechanism reaches the zero point. The supplementary pressing motor drives the locking cone rod to rotate according to the supplementary pressing amount transmitted by the controller, and the lower pressure head extends to extrude the die-cutting backing plate, completing the supplementary pressing action at a single position;

[0061] If the reverse action time exceeds the set value, the system alarms, and the supplementary pressing motor drives the pneumatic chuck to reverse through the first synchronous pulley and the second synchronous pulley;.

[0062] Preferably, a long circular hole is respectively provided on both sides of the spacer sleeve A4. The hexagonal screw A5 horizontally passes through the long circular hole and is threadedly connected to the locking cone rod A2, and then contacts the adjusting screw A9, realizing the fixation of the locking cone rod A2 and the adjusting screw A9. The adjusting screw A9 and the locking cone rod A2 are fixed axially and transversely, ensuring the tightness and integrity, achieving the effect of simultaneous rotation and avoiding errors.

[0063] The locking cone rod A2 is made of wear-resistant metal material; the cone sleeve A6 is made of a material with good elasticity; the adjusting screw A9, the upper pressure head A10 and the lower pressure head A14 are all made of pressure-resistant metal materials, and the die-cutting backing plate 3 is made of a compressive thin plate material that can produce a small elastic deformation;

[0064] The pressure sensor A13 is only a general term for a sensor that can realize pressure monitoring, including but not limited to strain gauge sensors, piezoresistive sensors, and piezoelectric ceramic sensors.

[0065] The mechanical origin pin A12 uses the method of a cylindrical pin fitting the positioning surface of the pressure head as the mechanical origin, and the mechanical origin function can also be realized by the threaded end face of other pressure heads fitting the end face of the screw.

[0066] A fine pitch thread is used for the distance fine-tuning between the adjusting screw A9 and the locking taper rod A2. The distance fine-tuning can also be achieved by using other specifications of threads or inclined plane adjusting mechanisms.

[0067] This device uses, but is not limited to, the taper sleeve A6 to achieve anti-loosening. Anti-loosening can also be achieved by using nut anti-loosening, hydraulic / pneumatic clamping sleeves.

[0068] Working principle: When operating on the paper 5 to be die-cut on the lower platform 6, the lower platform 6 drives the paper to be die-cut upward and contacts the cutting edge of the die-cutting knife 7 body. Continuing to move upward, the cutting or indentation of the paper 5 to be die-cut is completed. During the die-cutting process, the paper 5 to be die-cut will exert a reaction force on the die-cutting knife 7 body. The back of the die-cutting knife 7 body contacts and presses the lower surface of the die-cutting back plate 3. The lower surface of the lower pressure head A14 is in real-time contact with the upper surface of the die-cutting back plate 3. The force exerted by the die-cutting knife 7 body on the die-cutting back plate 3 is transmitted to the pressure monitoring sensor through the lower pressure head A14.

[0069] The pressure monitoring sensor transmits the pressure numerical signal at the die-cutting position to the controller and the display screen. The controller compares the monitored pressure values of each pressure monitoring sensor with the predetermined theoretical pressure value. If the pressure value of a certain pressure monitoring sensor is lower than the set value, the controller automatically converts the pressure difference into the adjustment amount of the precision displacement modulation mechanism at that place, and uses the adjustment tool to squeeze and unlock the unlocking ejector rod A1 for unlocking. First, rotate the locking taper rod A2 so that the positioning surface of the upper pressure head contacts the mechanical origin pin A12, and then rotate the locking taper rod A2 according to the converted adjustment amount. The locking taper rod A2 drives the adjusting screw A9 to rotate relative to the upper pressure head A10. The upper pressure head A10, the pressure sensor A13, and the lower pressure head A14 move along the holes of the upper platform 1 and the backing plate 2 at the same time. The lower surface of the lower pressure head A14 squeezes the die-cutting back plate 3 to produce a small deformation. The deformed part of the die-cutting back plate 3 squeezes the die-cutting knife 7 body at that place to complete the supplementary pressure at this part.

[0070] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent precision displacement fine-tuning device is installed in a die-cutting machine platform, characterized in that: It includes a fine-tuning mechanism and a punch assembly; the fine-tuning mechanism is installed in the die-cutting machine platform, a guiding mechanism is provided between the punch assembly and the die-cutting machine platform, the locking taper rod of the fine-tuning mechanism is threadedly connected to the upper punch of the punch assembly, and under the action of the guiding mechanism, the rotation of the fine-tuning mechanism can cause the punch assembly to generate an axial displacement.

2. The intelligent precision displacement fine-tuning device according to claim 1, wherein: The punch assembly includes a punch group and a pressure sensor. The rotation of the fine-tuning mechanism causes the punch group to generate an axial displacement. The pressure sensor is installed on the punch group or the die-cutting plate of the die-cutting machine and is used to detect the force received by the die-cutting blade and / or the indentation line of the die-cutting machine; a guiding mechanism is provided between the punch group and the die-cutting machine platform. The pressure sensor is electrically connected to the controller, and both the fine-tuning mechanism and the controller are electrically connected.

3. An intelligent precision displacement fine-tuning device according to claim 2, characterized in that: The punch group includes an upper punch and a lower punch. A pressure sensor is clamped between the upper punch and the lower punch. The fine-tuning mechanism drives the adjustment screw to rotate, and the upper punch generates an axial displacement, realizing the synchronous axial movement of the upper punch, the lower punch, and the pressure sensor.

4. An intelligent precision displacement fine-tuning device according to claim 1, characterized in that: The fine-tuning mechanism includes a locking taper rod, an adjustment screw, and a locking assembly. The locking taper rod is arranged in the first mating hole of the die-cutting machine platform for limiting the locking taper rod; one end of the adjustment screw is connected to the locking taper rod, and the other end is connected to the punch assembly in the second mating hole. A locking assembly is provided between the locking taper rod and the adjustment screw, which can lock the adjustment screw.

5. An intelligent precision displacement fine-tuning device according to claim 4, characterized in that: The locking assembly includes an unlocking ejector rod, an unlocking bolt, a spacer sleeve, and a tapered sleeve; the unlocking ejector rod is arranged in the inner cavity of the locking taper rod, and two first long round holes are provided on both sides of the locking taper rod; the unlocking bolt passes through the locking taper rod and the unlocking ejector rod, and the unlocking bolt is arranged in the first long round hole, thereby realizing the up and down movement of the unlocking ejector rod in the inner cavity of the locking taper rod. The locking taper rod sleeved with the spacer sleeve and the tapered sleeve is installed in the first mating hole, and an unlocking compression spring is provided in the first mating hole. The end face of the tapered sleeve is connected to the first mating hole through the unlocking compression spring.

6. An intelligent precision displacement fine-tuning device according to claim 3, characterized in that: The backing plate of the die-cutting machine platform is also provided with a third mating hole; the upper punch is threadedly connected to the adjustment screw, and the upper punch is arranged in the second mating hole of the die-cutting machine. The second mating hole is used to limit the upper punch, and the lower punch is arranged in the third mating hole; a disc spring is provided between the stepped surface of the lower punch and the stepped surface of the third mating hole. The disc spring provides an upward acting force for the lower punch, realizing the close fit between the lower punch, the pressure sensor, and the upper punch. The upper punch bears the force generated by the platform closing pressure and transmits this force to the pressure sensor.

7. An intelligent precision displacement fine-tuning device according to claim 1, characterized in that: The fine-tuning mechanism is provided with an origin positioning component that cooperates with the punch assembly; the origin positioning component can contact the punch group and is used to judge whether the fine-tuning mechanism reaches zero.

8. An intelligent precision displacement fine-tuning device according to claim 4, characterized in that: The second mating hole is a stepped hole. The stepped structure at the end of the adjustment screw forms an axial limit with the second mating hole. An origin positioning component is provided at the end of the adjustment screw, and the origin positioning component is a mechanical origin pin. A notch is provided at the top of the upper punch of the punch assembly, and the notch forms two positioning surfaces at the top of the upper punch that can cooperate with the mechanical origin pin. When the lower surface of the lower punch of the punch assembly is aligned with the lower surface of the backing plate, the mechanical origin pin fits with the positioning surface of the upper punch.

9. An intelligent precision displacement fine-tuning device according to claim 2, characterized in that: The guiding mechanism includes an upper guiding pin, an upper guiding groove, a lower guiding groove and a lower guiding groove. The upper guiding pin is arranged on the upper pressure head, and the upper guiding groove is arranged in the second mating hole; the lower guiding pin is arranged on the lower pressure head, and the lower guiding groove is arranged in the third mating hole.

10. An intelligent precision displacement fine-tuning device according to claim 5, characterized in that: One long circular hole is provided on each side of the spacer sleeve. The hexagonal screw passes through the long circular hole horizontally and is threadedly connected to the locking taper rod, and then contacts the adjusting screw rod to realize the fixation of the locking taper rod and the locking taper rod.

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