A cutting device with automatic variable distance function

Abstract

The present invention discloses a cutting device with automatic variable pitch function, and relates to the technical field of cutting equipment. It comprises a hydraulic drive device, a cutting machine box, a material shifting module, a waste material cutting module, a conveying table, a material strip cutting module and a variable pitch cutter head module. The present invention utilizes a second screw rod and a second scissor rod assembly to cooperate with each other to drive a first variable pitch cutter holder and a second variable pitch cutter holder to move at equal intervals, thereby achieving the purpose of adaptively adjusting the spacing between the first variable pitch cutter holder and the second variable pitch cutter holder according to the lateral spacing of the material on the material strip. By adjusting the spacing between the first cutter head assembly and the second cutter head assembly, and adjusting the spacing between the first variable pitch cutter holder and the second variable pitch cutter holder, the cutting cutter head can adjust the longitudinal and lateral spacing according to the material strip specifications, thereby achieving the purpose of automatic pitch change of the cutting cutter head. The upper pressure plate is positioned by a positioning column to prevent the upper pressure plate from being offset when it descends, thereby improving the accuracy of cutting.

Description

Technical Field

[0001] The invention relates to the technical field of cutting equipment, in particular to a cutting equipment with an automatic distance-changing function. Background Art

[0002] The tape cutting machine is an indispensable equipment in industrial production. It is specially used to cut various types of tapes to meet the requirements of tape size and shape in different industries. The advantages of the tape cutting machine are improving production efficiency, reducing production costs and strong adaptability. Through reasonable use, the tape cutting machine can provide strong support for the production and development of enterprises and become an indispensable and important equipment in industrial production.

[0003] Existing cutting equipment still has many shortcomings. When using material strip cutting equipment to cut material strips, controlling the cutting accuracy has always been an important part of ensuring the cutting quality. The accuracy of existing cutting equipment is uneven. When cutting materials of different specifications, it is necessary to adjust the spacing of the cutting heads. The traditional method is to disassemble and adjust the heads. This process is extremely cumbersome and will reduce production efficiency. There is a lack of effective detection means to detect the sharpness of the heads during the production process. When the heads are worn, if they are not discovered and dealt with in time, the material strips will be unqualified and become waste, causing a lot of losses. Summary of the invention

[0004] The object of the present invention is to provide a cutting device with an automatic variable distance function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cutting device with automatic variable pitch function, comprising a cutting chassis, a hydraulic drive device installed on the cutting chassis, a conveyor table installed on one side of the cutting chassis, a material transfer module installed on the conveyor table, a waste material cutting module installed at one end of the conveyor table, a material strip cutting module installed in the cutting chassis, an output shaft of the hydraulic drive device passes through the cutting chassis and is connected to the material strip cutting module, and a variable pitch cutter head module is installed on the material strip cutting module.

[0006] The cutting device is connected to a control cabinet, and a control system is installed in the control cabinet. The control system is used to control the entire cutting device. The waste cutting module is used to cut the waste tape.

[0007] After the material belt is in place, the control system starts the hydraulic drive device, and the output shaft of the hydraulic drive device drives the upper pressure plate to descend, and the upper pressure plate drives the variable pitch cutter head module to descend along the positioning column, and the cutting head on the variable pitch cutter head module cuts the material on the material belt, and the cut material falls into the discharge chute, and falls into the collecting component from the discharge chute. The waste cutting module cuts the waste belt synchronously. After cutting, the control system retracts the cylinder output shaft and runs the third motor in reverse to reset the material pusher rod, and then repeats the above steps to achieve cutting of the entire material belt.

[0008] Furthermore, the material strip cutting module includes a bottom die and an upper pressure plate. The bottom die is installed in the cutting machine box. The bottom die is provided with a material discharge hole. The bottom die is provided with a positioning column. The upper pressure plate is installed on the output shaft of the hydraulic drive device. A variable pitch cutter head module is installed at the bottom end of the upper pressure plate. A limit plate is installed on the bottom die. A limit seam is provided on the limit plate. Connecting parts are symmetrically provided at the bottom end of the limit plate. A cutting detection component is installed between the connecting parts. The bottom die is provided with a material discharge trough matching the specifications of the material strip.

[0009] The material strip passes through the limiting slit on the limiting plate. The limiting slit is used to limit and fix the two sides of the material strip to prevent the material strip from deviating during the progressive process and ensure the cutting accuracy.

[0010] Furthermore, the cutting detection component includes a detection shaft and a spiral spring. The detection shaft is installed between the connecting parts. A measuring roller is rotatably installed on the detection shaft. One end of the spiral spring is connected to the detection shaft, and the other end of the spiral spring is connected to the measuring roller. A detection bevel block is installed on one side of the measuring roller, a baffle is installed on one end of the detection bevel block, and a converter is installed on the detection shaft.

[0011] The inner end of the volute spring is connected to the detection shaft, and the outer end of the volute spring is connected to the measuring roller.

[0012] Furthermore, the converter includes a connecting shell, which is installed on the detection shaft, a force transmission plate is slidably installed in the connecting shell, a transmission rod is installed at one end of the force transmission plate, the transmission rod passes through the connecting shell, a pressure plate is slidably installed in the connecting shell, a force transmission spring is installed between the pressure plate and the force transmission plate, an elastic membrane is installed at one end of the connecting shell, and piezoelectric ceramics are installed between the elastic membrane and the pressure plate.

[0013] When the sharpness of the cutting blade meets the requirements, the cutting part on the scrap belt is flat and does not warp. When the scrap belt passes through the cutting detection component, the cutting part does not contact the measuring roller and the measuring roller does not deflect. When the cutting blade is worn and does not meet the production requirements, burrs will appear at the cutting part of the scrap belt, and due to insufficient sharpness, the cutting part will warp. When passing through the measuring roller, the warped part will contact the measuring roller. Under the action of friction, the cutting part will drive the measuring roller to deflect around the detection axis. The measuring roller overcomes the elastic force of the scroll spring to rotate and drive the detection The inclined block rotates, and the inclined surface on the detection inclined block squeezes the transmission rod. The transmission rod is compressed and drives the force transmission plate to slide in the connecting shell. The force transmission plate squeezes the force transmission spring. After the force transmission spring is compressed, it transmits the pressure to the piezoelectric ceramic through the pressure plate. After the piezoelectric ceramic is compressed, an electrical signal is generated. The electrical signal is transmitted to the control system through the wire; the more serious the wear of the cutting head, the smaller the sharpness, the more burrs at the cutting point, the more serious the warping, the greater the friction between the cutting point and the measuring roller, the greater the deflection of the measuring roller, and the stronger the corresponding electrical signal. The control system judges the degree of wear of the cutting head according to the strength of the electrical signal. When the degree of wear exceeds the usable range, an alarm is issued, thereby achieving the purpose of testing the sharpness of the cutting head. The indirect detection method avoids the detection mechanism directly acting on the cutting head to cause the head to wear.

[0014] Furthermore, the variable pitch cutter head module includes a base plate, which is installed at the bottom end of the upper pressure plate, a sliding frame is slidably installed on the base plate, an electric telescopic rod is installed on the base plate, the output shaft of the electric telescopic rod is connected to the sliding frame, a variable pitch mechanism is installed on the sliding frame, and a first cutter head assembly and a plurality of second cutter head assemblies are installed on the variable pitch mechanism.

[0015] Furthermore, the pitch changing mechanism includes a first screw rod, a first positioning rod, a pitch changing block and a first motor. The first screw rod is rotatably mounted on the sliding frame, the first motor is mounted on the sliding frame, the output shaft of the first motor is connected to the first screw rod, the pitch changing block is respectively mounted on the first cutter head assembly and the second cutter head assembly, the first scissors rod assembly is rotatably mounted on the pitch changing block, the first scissors rod assemblies are rotatably connected, a first adjusting slider is mounted on the pitch changing block, the first adjusting slider is threadedly connected to the first screw rod, the first positioning rod is mounted on the first cutter head assembly, and a plurality of second cutter head assemblies are slidably mounted on the first positioning rod.

[0016] The first cutter head assembly is fixedly mounted on the first positioning rod, and a plurality of second cutter head assemblies are slidably mounted on the first positioning rod.

[0017] Before cutting, the control system turns on the first motor, and the first motor output shaft drives the first screw rod to rotate forward, and the first screw rod drives the first adjusting slider to slide along the first positioning rod through the thread, and the first adjusting slider drives the corresponding second cutter head assembly to slide through the variable pitch block. When the second cutter head assembly slides and approaches another group of second cutter head assemblies on one side, the first scissors rod assembly thereon is pressed and opened. Since the first scissors rod assemblies are connected to each other, when the first scissors rod assemblies are opened, they will drive the adjacent first scissors rod assemblies to open at the same angle, and transmit in sequence. Several first scissors rod assemblies are opened at the same angle, so that the first cutter head assembly and the second cutter head assembly are equidistant from each other. Similarly, the control system controls the first motor output shaft to drive the first screw rod to rotate in the opposite direction, and several first scissors rod assemblies are closed at the same angle, so that the first cutter head assembly and the second cutter head assembly are equidistant from each other. The control system adjusts the spacing between the first cutter head assembly and the second cutter head assembly according to the longitudinal spacing of the material on the material belt.

[0018] Furthermore, the first scissor lever assembly includes a first upper rotating lever and a first lower rotating lever, the first upper rotating lever and the first lower rotating lever are rotatably connected, and the first upper rotating lever and the first lower rotating lever are rotatably mounted on the pitch-changing block.

[0019] The first upper rotating rod and the second lower rotating rod rotate relative to each other to realize the opening or closing of the first scissor lever assembly.

[0020] Furthermore, the second cutter head assembly includes an end block, which is slidably mounted on the first positioning rod, a second positioning rod is mounted between the end blocks, a second variable pitch tool holder is mounted on the second positioning rod, a plurality of first variable pitch tool holders are slidably mounted on the second positioning rod, cutting heads are mounted on both the first variable pitch tool holder and the second variable pitch tool holder, a second scissors rod assembly is mounted on both the first variable pitch tool holder and the second variable pitch tool holder, the second scissors rod assemblies are rotatably connected, a second adjusting slider is mounted on the first variable pitch tool holder, a second screw rod is rotatably mounted between the end blocks, the second screw rod is slidably connected to the second adjusting slider, a second motor is mounted on the end block, the second motor output shaft is connected to the second screw rod, and the number of cutting heads corresponds to the number of feeding troughs.

[0021] During cutting, when the cutting blade passes the edge of the material chute, the cutting blade and the edge of the material chute cooperate with each other to form a shear force to cut the connection between the material and the material strip. The second variable pitch blade holder is fixedly mounted on the second positioning rod, and a plurality of first variable pitch blade holders are slidably mounted on the second positioning rod.

[0022] After the first cutter head assembly and the second cutter head assembly are adjusted, the control system starts the second motor, and the second motor output shaft drives the second screw rod to rotate forward, and the second screw rod drives the second adjusting slider to slide along the second positioning rod through the thread, and the second adjusting slider drives the corresponding first variable pitch tool holder to slide. When the first variable pitch tool holder slides and approaches another group of first variable pitch tool holders on one side, the second scissors rod assembly on it is pressed and opened. Since the second scissors rod assemblies are connected to each other, when the second scissors rod assembly is opened, it will drive the adjacent second scissors rod assemblies to open at the same angle, and transmit in sequence. Several second scissors rod assemblies are opened at the same angle, so that the first variable pitch tool holder and the second variable pitch tool holder are equidistant and close to each other. Similarly, the control system controls the second motor output shaft to drive the second screw rod to rotate in the opposite direction, and several second scissors rod assemblies are closed at the same angle, which can make the first variable pitch tool holder and the second variable pitch tool holder equidistant and away from each other. The control system adjusts the spacing between the first variable pitch tool holder and the second variable pitch tool holder according to the lateral spacing of the material on the material belt.

[0023] Furthermore, the second scissor rod assembly includes a second upper rotating rod and a second lower rotating rod, the second upper rotating rod and the second lower rotating rod are rotatably connected, the second upper rotating rod and the second lower rotating rod are rotatably installed on the first variable pitch tool holder, and the second upper rotating rod and the second lower rotating rod are rotatably installed on the second variable pitch tool holder.

[0024] Furthermore, the material shifting module includes a material shifting bracket, which is installed on the conveying platform, a third motor is installed on the material shifting bracket, a third screw is rotatably installed on the material shifting bracket, the output shaft of the third motor is connected to the third screw, a driving slider is slidably installed on the material shifting bracket, the driving slider is threadedly connected to the third screw, a connecting frame is installed on the driving slider, a cylinder is installed on the connecting frame, a lower pressure block is installed on the cylinder output shaft, and a material shifting rod is installed on the bottom end of the lower pressure block.

[0025] The control system turns on the cylinder, and the cylinder output shaft drives the material-push rod on the lower pressure block to move downward, so that the material-push rod is inserted into the hole on the material strip. After that, the control system controls the third motor to rotate, and the third motor output shaft drives the third screw to rotate. The third screw drives the driving slider to slide horizontally on the material-push bracket through the thread. The material-push bracket drives the cylinder to move, and the cylinder drives the material-push rod on the lower pressure block to move. The material-push rod moves the material strip on the conveyor table, so that the uncut material strip enters the material strip cutting module position, and at the same time, the cut waste strip enters the waste cutting module. According to different material strip specifications, the number of rotations of the third motor is changed, so that the displacement of the driving slider is adjusted according to the progressive requirements, thereby achieving the purpose of adjusting the progressive displacement on demand. The way in which the third screw drives the displacement of the driving slider makes the progressive precision higher.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. Convert the flatness of the cutting part of the material strip into the deflection of the measuring roller. The measuring roller converts the rotation into the sliding of the transmission rod through the detection bevel block. The transmission rod converts the sliding into pressure on the piezoelectric ceramic. The piezoelectric ceramic generates an electrical signal after being compressed. The control system judges the degree of wear of the cutting head according to the strength of the electrical signal. When the degree of wear exceeds the usable range, an alarm is issued, thereby achieving the purpose of testing the sharpness of the cutting head. The indirect detection method avoids the detection mechanism directly acting on the cutting head to cause head wear.

[0028] 2. Use the material shifting module to drive the material belt to move on the conveyor table, so that the material belt enters the material belt cutting module and the waste belt enters the waste cutting module at the same time, so as to achieve the effect of synchronous feeding of the uncut material belt and the waste belt through a mechanism of the material shifting module; use the material shifting module to realize the reciprocating advancement of the material belt at a fixed distance, and the third lead screw drives the displacement of the driving slider to make the advancement more accurate. At the same time, according to different material belt specifications, the number of rotations of the third motor is changed, so that the displacement of the driving slider is adjusted according to the advancement requirements, so as to achieve the purpose of adjusting the advancement displacement on demand.

[0029] 3. The second screw rod and the second scissor rod assembly cooperate with each other to drive the first variable pitch tool holder and the second variable pitch tool holder to move at equal intervals, thereby achieving the purpose of adaptively adjusting the spacing between the first variable pitch tool holder and the second variable pitch tool holder according to the lateral spacing of the material on the material belt. By adjusting the spacing of the first blade head assembly and the second blade head assembly, and adjusting the spacing between the first variable pitch tool holder and the second variable pitch tool holder, the cutting blade head can adjust the longitudinal and lateral spacing according to the material belt specifications, achieving the purpose of automatic pitch change of the cutting blade head.

[0030] 4. Use the positioning column to position the upper pressure plate to prevent the upper pressure plate from deflecting when it descends, thereby improving the cutting accuracy. Use the limit plate to limit and fix both sides of the material belt to prevent the material belt from deflecting during the progressive process, further improving the cutting accuracy. The material discharge chute on the bottom mold can ensure that the cut materials enter the corresponding collection component without mixing.

[0031] 5. The first screw rod and the first scissor rod assembly cooperate with each other to drive the first cutter head assembly and the second cutter head assembly to move at equal intervals, thereby achieving the purpose of adaptively adjusting the distance between the first cutter head assembly and the second cutter head assembly according to the longitudinal spacing of the material on the material belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is an overall stereogram of the cutting device of the present invention;

[0033] Figure 2 A three-dimensional diagram of the material strip cutting module of the present invention;

[0034] Figure 3A three-dimensional diagram of the material shifting module of the present invention;

[0035] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A area;

[0036] Figure 5 is a three-dimensional diagram of a cutting detection assembly of the present invention;

[0037] Figure 6 For the present invention Figure 5 A partial enlarged view of the middle B area;

[0038] Figure 7 A three-dimensional diagram of the variable pitch cutter head module of the present invention;

[0039] Figure 8 It is a three-dimensional diagram of the pitch-changing mechanism of the present invention;

[0040] Fig. 9 It is a three-dimensional view of the second cutter head assembly of the present invention.

[0041] In the figure: 1. hydraulic drive device; 2. cutting machine box; 3. material shifting module; 4. waste material cutting module; 5. conveyor; 6. material strip cutting module; 7. variable pitch cutter head module; 61. upper pressure plate; 62. positioning column; 63. bottom mold; 64. limit plate; 65. cutting detection component; 641. limit gap; 642. connecting piece; 651. measuring roller; 652. detection shaft; 653. volute spring; 654. detection inclined block; 655. baffle; 656. converter; 6561. transmission rod; 6562. force transmission spring; 6563. pressure plate; 6564. piezoelectric ceramic; 6565. elastic film; 6566. connecting shell; 6567. force transmission plate; 71. substrate; 72. variable pitch mechanism; 73. sliding frame; 74. electric telescopic rod; 75. first cutter head Component; 76, second cutter head component; 721, first positioning rod; 722, first motor; 723, first screw rod; 724, first adjusting slider; 725, variable pitch block; 726, first scissor rod component; 7261, first upper rotating rod; 7262, first lower rotating rod; 761, end block; 762, second screw rod; 763, second adjusting slider; 764, second motor; 765, second positioning rod; 766, second scissor rod component; 767, first variable pitch tool holder; 768, cutting cutter head; 769, second variable pitch tool holder; 7661, second upper rotating rod; 7662, second lower rotating rod; 31, third motor; 32, third screw rod; 33, driving slider; 34, connecting frame; 35, cylinder; 36, lower pressing block; 37, material dispensing rod; 38, material dispensing bracket. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1-Figure 9 As shown, the present invention provides a technical solution for a cutting device with an automatic variable pitch function: it includes a cutting chassis 2, a hydraulic drive device 1 is installed on the cutting chassis 2, a conveying table 5 is installed on one side of the cutting chassis 2, a material shifting module 3 is installed on the conveying table 5, a waste cutting module 4 is installed at one end of the conveying table 5, a material strip cutting module 6 is installed in the cutting chassis 2, the output shaft of the hydraulic drive device 1 passes through the cutting chassis 2 and is connected to the material strip cutting module 6, and a variable pitch cutter head module 7 is installed on the material strip cutting module 6.

[0044] The cutting device is connected to a control cabinet, and a control system is installed in the control cabinet. The control system is used to control the entire cutting device. The waste cutting module 4 is used to cut the waste tape.

[0045] The material dispensing module 3 includes a material dispensing bracket 38, which is installed on the conveying platform 5. A third motor 31 is installed on the material dispensing bracket 38. A third screw rod 32 is rotatably installed on the material dispensing bracket 38. The output shaft of the third motor 31 is connected to the third screw rod 32. A driving slider 33 is slidably installed on the material dispensing bracket 38. The driving slider 33 is threadedly connected to the third screw rod 32. A connecting frame 34 is installed on the driving slider 33. A cylinder 35 is installed on the connecting frame 34. A lower pressure block 36 is installed on the output shaft of the cylinder 35. A material dispensing rod 37 is installed at the bottom end of the lower pressure block 36.

[0046] The material strip cutting module 6 includes a bottom die 63 and an upper pressure plate 61. The bottom die 63 is installed in the cutting machine chassis 2. A material discharge hole is provided on the bottom die 63. A positioning column 62 is installed on the bottom die 63. The upper pressure plate 61 is installed on the output shaft of the hydraulic drive device 1. A variable pitch cutter head module 7 is installed on the bottom end of the upper pressure plate 61. A limit plate 64 is installed on the bottom die 63. A limit seam 641 is provided on the limit plate 64. Connectors 642 are symmetrically provided at the bottom end of the limit plate 64. A cutting detection assembly 65 is installed between the connectors 642. A material discharge trough matching the material strip specifications is provided on the bottom die 63.

[0047] The material strip passes through the limiting slit 641 on the limiting plate 64 . The limiting slit 641 is used to limit and fix the two sides of the material strip to prevent the material strip from deviating during the advancement process, thereby ensuring the cutting accuracy.

[0048] The cutting detection assembly 65 includes a detection shaft 652 and a scroll spring 653. The detection shaft 652 is installed between the connecting members 642. A measuring roller 651 is rotatably installed on the detection shaft 652. One end of the scroll spring 653 is connected to the detection shaft 652, and the other end of the scroll spring 653 is connected to the measuring roller 651. A detection inclined block 654 is installed on one side of the measuring roller 651. A baffle 655 is installed on one end of the detection inclined block 654. A converter 656 is installed on the detection shaft 652. The inner end of the scroll spring 653 is connected to the detection shaft 652, and the outer end of the scroll spring 653 is connected to the measuring roller 651.

[0049] The converter 656 includes a connecting shell 6566, which is installed on the detection shaft 652. A force transmission plate 6567 is slidably installed in the connecting shell 6566. A transmission rod 6561 is installed at one end of the force transmission plate 6567. The transmission rod 6561 passes through the connecting shell 6566. A pressure plate 6563 is slidably installed in the connecting shell 6566. A force transmission spring 6562 is installed between the pressure plate 6563 and the force transmission plate 6567. An elastic membrane 6565 is installed at one end of the connecting shell 6566, and a piezoelectric ceramic 6564 is installed between the elastic membrane 6565 and the pressure plate 6563.

[0050] The variable pitch cutter head module 7 includes a base plate 71, which is mounted on the bottom end of the upper pressure plate 61, a sliding frame 73 is slidably mounted on the base plate 71, an electric telescopic rod 74 is mounted on the base plate 71, the output shaft of the electric telescopic rod 74 is connected to the sliding frame 73, a variable pitch mechanism 72 is mounted on the sliding frame 73, and a first cutter head assembly 75 and a plurality of second cutter head assemblies 76 are mounted on the variable pitch mechanism 72.

[0051] The pitch changing mechanism 72 includes a first screw rod 723, a first positioning rod 721, a pitch changing block 725 and a first motor 722. The first screw rod 723 is rotatably mounted on the sliding frame 73, the first motor 722 is mounted on the sliding frame 73, the output shaft of the first motor 722 is connected to the first screw rod 723, the pitch changing block 725 is respectively mounted on the first cutter head assembly 75 and the second cutter head assembly 76, the first scissors rod assembly 726 is rotatably mounted on the pitch changing block 725, the first scissors rod assemblies 726 are rotatably connected to each other, the first adjusting slider 724 is mounted on the pitch changing block 725, the first adjusting slider 724 is threadedly connected to the first screw rod 723, the first positioning rod 721 is mounted with the first cutter head assembly 75, and a plurality of second cutter head assemblies 76 are slidably mounted on the first positioning rod 721.

[0052] The first cutter head assembly 75 is fixedly mounted on the first positioning rod 721 , and a plurality of second cutter head assemblies 76 are slidably mounted on the first positioning rod 721 .

[0053] Before cutting, the control system starts the first motor 722, the output shaft of the first motor 722 drives the first screw rod 723 to rotate forward, the first screw rod 723 drives the first adjusting slider 724 to slide along the first positioning rod 721 through the thread, the first adjusting slider 724 drives the corresponding second cutter head assembly 76 to slide through the variable pitch block 725, when the second cutter head assembly 76 slides and approaches another set of second cutter head assembly 76 on one side, the first scissor rod assembly 726 thereon is pressed and opened, and since the first scissor rod assemblies 726 are connected to each other, the first scissor rod assembly 726 opens. When the first scissor rod assemblies 726 are opened at the same angle, the control system controls the output shaft of the first motor 722 to drive the first screw rod 723 to rotate in the opposite direction, and the first scissor rod assemblies 726 are closed at the same angle, so that the first cutter head assembly 75 and the second cutter head assembly 76 are equidistant from each other. Similarly, the control system controls the output shaft of the first motor 722 to drive the first screw rod 723 to rotate in the opposite direction, and the first scissor rod assemblies 726 are closed at the same angle, so that the first cutter head assembly 75 and the second cutter head assembly 76 are equidistant from each other. The control system adjusts the spacing between the first cutter head assembly 75 and the second cutter head assembly 76 according to the longitudinal spacing of the material on the material belt.

[0054] The first scissor lever assembly 726 includes a first upper rotating rod 7261 and a first lower rotating rod 7262, which are rotatably connected and rotatably mounted on the pitch-changing block 725. The first upper rotating rod 7261 and the second lower rotating rod 7662 rotate relative to each other to realize the opening or closing of the first scissor lever assembly 726.

[0055] The second blade assembly 76 includes an end block 761, which is slidably mounted on the first positioning rod 721, a second positioning rod 765 is mounted between the end blocks 761, a second variable pitch tool holder 769 is mounted on the second positioning rod 765, a plurality of first variable pitch tool holders 767 are slidably mounted on the second positioning rod 765, a cutting blade 768 is mounted on both the first variable pitch tool holder 767 and the second variable pitch tool holder 769, a second scissor rod assembly 766 is mounted on both the first variable pitch tool holder 767 and the second variable pitch tool holder 769, the second scissor rod assembly 766 is rotatably connected, a second adjusting slider 763 is mounted on the first variable pitch tool holder 767, a second screw rod 762 is rotatably mounted between the end blocks 761, the second screw rod 762 is slidably connected to the second adjusting slider 763, a second motor 764 is mounted on the end block 761, an output shaft of the second motor 764 is connected to the second screw rod 762, and the number of cutting blades 768 corresponds to the number of feeding troughs.

[0056] During cutting, when the cutting blade 768 passes the edge of the material chute, the cutting blade 768 and the edge of the material chute cooperate with each other to form a shear force to cut the connection between the material and the material strip. The second variable pitch blade holder 769 is fixedly mounted on the second positioning rod 765, and a plurality of first variable pitch blade holders 767 are slidably mounted on the second positioning rod 765.

[0057] After the first blade assembly 75 and the second blade assembly 76 are adjusted, the control system turns on the second motor 764, the output shaft of the second motor 764 drives the second screw rod 762 to rotate forward, the second screw rod 762 drives the second adjustment slider 763 to slide along the second positioning rod 765 through the thread, and the second adjustment slider 763 drives the corresponding first variable pitch tool holder 767 to slide. When the first variable pitch tool holder 767 slides and approaches another set of first variable pitch tool holders 767 on one side, the second scissor rod assembly 766 thereon is pressed and opened. Since the second scissor rod assemblies 766 are connected to each other, the second scissor rod assembly 766 When opening, it will drive the adjacent second scissor bar assemblies 766 to open at the same angle, and then transfer in sequence, several second scissor bar assemblies 766 open at the same angle, so that the first variable pitch knife frame 767 and the second variable pitch knife frame 769 are equidistantly close to each other. Similarly, the control system controls the output shaft of the second motor 764 to drive the second screw rod 762 to rotate in the opposite direction, and several second scissor bar assemblies 766 close at the same angle, so that the first variable pitch knife frame 767 and the second variable pitch knife frame 769 are equidistantly away from each other. The control system adjusts the spacing between the first variable pitch knife frame 767 and the second variable pitch knife frame 769 according to the lateral spacing of the materials on the material belt. Finally, the output shaft of the electric telescopic rod 74 is used to drive the sliding frame 73 to move on the base plate 71, so that the cutting head 768 after the variable pitch is centered.

[0058] The second scissor rod assembly 766 includes a second upper rotating rod 7661 and a second lower rotating rod 7662, the second upper rotating rod 7661 and the second lower rotating rod 7662 are rotatably connected, the second upper rotating rod 7661 and the second lower rotating rod 7662 are rotatably installed on the first variable pitch tool holder 767, and the second upper rotating rod 7661 and the second lower rotating rod 7662 are rotatably installed on the second variable pitch tool holder 769.

[0059] The working principle of the present invention is as follows: the control system starts the cylinder 35, the output shaft of the cylinder 35 drives the material-moving rod 37 on the lower pressing block 36 to move downward, so that the material-moving rod 37 is inserted into the hole on the material strip, and then the control system controls the third motor 31 to rotate, the output shaft of the third motor 31 drives the third screw 32 to rotate, the third screw 32 drives the driving slider 33 to slide horizontally on the material-moving bracket 38 through the thread, the material-moving bracket 38 drives the cylinder 35 to move, the cylinder 35 drives the material-moving rod 37 on the lower pressing block 36 to move, the material-moving rod 37 moves the material strip on the conveyor 5, so that the uncut material strip enters the position of the material strip cutting module 6, and at the same time, the cut waste material strip enters the waste cutting module 4. According to different material strip specifications, the number of rotations of the third motor 31 is changed, so that the displacement of the driving slider 33 is adjusted according to the progressive demand, thereby achieving the purpose of adjusting the progressive displacement on demand. The way in which the third screw drives the driving slider 33 to move makes the progressive precision higher.

[0060] After the material belt is in place, the control system starts the hydraulic drive device 1, and the output shaft of the hydraulic drive device 1 drives the upper pressure plate 61 to descend, and the upper pressure plate 61 drives the variable pitch cutter head module 7 to descend along the positioning column 62, and the cutting head 768 on the variable pitch cutter head module 7 cuts the material on the material belt, and the cut material falls into the discharge chute, and falls into the collecting component from the discharge chute. The waste cutting module 4 cuts the waste belt synchronously. After cutting, the control system retracts the output shaft of the cylinder 35 and runs the third motor 31 in reverse to reset the material pusher 37, and then repeats the above steps to achieve cutting of the entire material belt.

[0061] When the sharpness of the cutting blade 768 meets the requirements, the cutting part on the waste belt is smooth without warping. When the waste belt passes through the cutting detection component 65, the cutting part does not contact the measuring roller 651, and the measuring roller 651 does not deflect. When the cutting blade 768 is worn and does not meet the production requirements, burrs will appear at the cutting part of the waste belt, and due to insufficient sharpness, the cutting part will warp. When passing through the measuring roller 651, the warped part will contact the measuring roller 651. Under the action of friction, the cutting part will drive the measuring roller 651 to deflect around the detection shaft 652. The measuring roller 651 overcomes the elastic force of the volute spring 653 to rotate and drives the detection bevel block 654 to rotate. The inclined surface on the block 654 squeezes the transmission rod 6561, and the transmission rod 6561 is compressed and drives the force transmission plate 6567 to slide in the connecting shell 6566. The force transmission plate 6567 squeezes the force transmission spring 6562. After the force transmission spring 6562 is compressed, the pressure is transmitted to the piezoelectric ceramic 6564 through the pressure plate 6563. After the piezoelectric ceramic 6564 is compressed, an electrical signal is generated, and the electrical signal is transmitted to the control system through the wire; the more serious the wear of the cutting head 768, the smaller the sharpness, the more burrs at the cutting position, the more serious the warping, the greater the friction between the cutting position and the measuring roller 651, the greater the deflection of the measuring roller 651, and the stronger the corresponding electrical signal. The control system judges the degree of wear of the cutting head 768 according to the strength of the electrical signal. When the degree of wear exceeds the usable range, an alarm is issued, thereby achieving the purpose of testing the sharpness of the cutting head 768. The indirect detection method avoids the detection mechanism directly acting on the cutting head 768 to cause the head to wear.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A cutting device with automatic variable distance function, characterized in that: The cutting device comprises a cutting machine box (2), a hydraulic drive device (1) is installed on the cutting machine box (2), a conveyor platform (5) is installed on one side of the cutting machine box (2), a material shifting module (3) is installed on the conveyor platform (5), a waste material cutting module (4) is installed at one end of the conveyor platform (5), a material strip cutting module (6) is installed in the cutting machine box (2), an output shaft of the hydraulic drive device (1) passes through the cutting machine box (2) and is connected to the material strip cutting module (6), and a variable pitch cutter head module (7) is installed on the material strip cutting module (6); The strip cutting module (6) comprises a bottom module (63) and an upper pressure plate (61), the bottom module (63) being installed in a cutting machine box (2), the bottom module (63) being provided with a material discharge hole, the bottom module (63) being provided with a positioning column (62), the upper pressure plate (61) being installed on an output shaft of a hydraulic drive device (1), a variable pitch cutter head module (7) being installed at the bottom end of the upper pressure plate (61), a limit plate (64) being installed on the bottom module (63), a limit slit (641) being provided on the limit plate (64), connecting pieces (642) being symmetrically provided at the bottom end of the limit plate (64), a cutting detection assembly (65) being installed between the connecting pieces (642), and a material discharge trough matching the specifications of the strip being provided on the bottom module (63); The cutting detection assembly (65) comprises a detection shaft (652) and a scroll spring (653); the detection shaft (652) is mounted between the connecting members (642); a measuring roller (651) is rotatably mounted on the detection shaft (652); one end of the scroll spring (653) is connected to the detection shaft (652); the other end of the scroll spring (653) is connected to the measuring roller (651); a detection inclined block (654) is mounted on one side of the measuring roller (651); a baffle (655) is mounted on one end of the detection inclined block (654); and a converter (656) is mounted on the detection shaft (652); The converter (656) comprises a connecting shell (6566), wherein the connecting shell (6566) is mounted on the detection shaft (652), a force transmission plate (6567) is slidably mounted in the connecting shell (6566), a transmission rod (6561) is mounted at one end of the force transmission plate (6567), and the transmission rod (6561) passes through the connecting shell (6566), a pressure plate (6563) is slidably mounted in the connecting shell (6566), a force transmission spring (6562) is mounted between the pressure plate (6563) and the force transmission plate (6567), an elastic film (6565) is mounted at one end of the connecting shell (6566), and a piezoelectric ceramic (6564) is mounted between the elastic film (6565) and the pressure plate (6563); The material shifting module (3) comprises a material shifting bracket (38), the material shifting bracket (38) is mounted on the conveying platform (5), a third motor (31) is mounted on the material shifting bracket (38), a third screw rod (32) is rotatably mounted on the material shifting bracket (38), an output shaft of the third motor (31) is connected to the third screw rod (32), a driving slider (33) is slidably mounted on the material shifting bracket (38), the driving slider (33) is threadedly connected to the third screw rod (32), a connecting frame (34) is mounted on the driving slider (33), a cylinder (35) is mounted on the connecting frame (34), a lower pressing block (36) is mounted on the output shaft of the cylinder (35), and a material shifting rod (37) is mounted at the bottom end of the lower pressing block (36).

2. The cutting device with automatic variable distance function according to claim 1, characterized in that: The variable pitch cutter head module (7) comprises a base plate (71), the base plate (71) being mounted on the bottom end of the upper pressure plate (61), a sliding frame (73) being slidably mounted on the base plate (71), an electric telescopic rod (74) being mounted on the base plate (71), an output shaft of the electric telescopic rod (74) being connected to the sliding frame (73), a variable pitch mechanism (72) being mounted on the sliding frame (73), and a first cutter head assembly (75) and a plurality of second cutter head assemblies (76) being mounted on the variable pitch mechanism (72).

3. The cutting device with automatic variable distance function according to claim 2, characterized in that: The pitch changing mechanism (72) comprises a first screw rod (723), a first positioning rod (721), a pitch changing block (725) and a first motor (722); the first screw rod (723) is rotatably mounted on the sliding frame (73); the first motor (722) is mounted on the sliding frame (73); an output shaft of the first motor (722) is connected to the first screw rod (723); the pitch changing block (725) is respectively mounted on the first cutter head assembly (75) and the second cutter head assembly (76); a first scissor rod assembly (726) is rotatably mounted on the pitch changing block (725); the first scissor rod assemblies (726) are rotatably connected to each other; a first adjusting slider (724) is mounted on the pitch changing block (725); the first adjusting slider (724) is threadedly connected to the first screw rod (723); the first positioning rod (721) is mounted with the first cutter head assembly (75); and a plurality of the second cutter head assemblies (76) are slidably mounted on the first positioning rod (721).

4. The cutting device with automatic variable distance function according to claim 3, characterized in that: The first scissor lever assembly (726) comprises a first upper rotating lever (7261) and a first lower rotating lever (7262), wherein the first upper rotating lever (7261) and the first lower rotating lever (7262) are rotatably connected, and the first upper rotating lever (7261) and the first lower rotating lever (7262) are rotatably mounted on the pitch changing block (725).

5. The cutting device with automatic variable distance function according to claim 3, characterized in that: The second blade assembly (76) comprises an end block (761), the end block (761) being slidably mounted on a first positioning rod (721), a second positioning rod (765) being mounted between the end blocks (761), a second variable pitch blade holder (769) being mounted on the second positioning rod (765), a plurality of first variable pitch blade holders (767) being slidably mounted on the second positioning rod (765), a cutting blade (768) being mounted on both the first variable pitch blade holder (767) and the second variable pitch blade holder (769), 9) are both mounted with a second scissor lever assembly (766), the second scissor lever assemblies (766) are rotatably connected to each other, a second adjusting slider (763) is mounted on the first variable pitch tool holder (767), a second screw rod (762) is rotatably mounted between the end blocks (761), the second screw rod (762) is slidably connected to the second adjusting slider (763), a second motor (764) is mounted on the end blocks (761), an output shaft of the second motor (764) is connected to the second screw rod (762), and the number of the cutting heads (768) corresponds to the number of the feed troughs.

6. The cutting device with automatic variable distance function according to claim 5, characterized in that: The second scissor lever assembly (766) comprises a second upper rotating lever (7661) and a second lower rotating lever (7662), wherein the second upper rotating lever (7661) and the second lower rotating lever (7662) are rotatably connected, the second upper rotating lever (7661) and the second lower rotating lever (7662) are rotatably mounted on the first variable pitch knife holder (767), and the second upper rotating lever (7661) and the second lower rotating lever (7662) are rotatably mounted on the second variable pitch knife holder (769).

Images