A high-frequency vibration knife module and cutting bed

Abstract

The present invention provides a high-frequency vibration knife module and a cutting bed, wherein the high-frequency vibration knife module comprises a base, a vibration driving source mounted on the base, a knife seat assembled at the lower end of the base, a fixed knife shaft supported in the knife seat so as to be movable up and down, a cutting knife mounted at the lower end of the fixed knife shaft, and a vibration transmission mechanism, wherein the vibration transmission mechanism comprises a transmission crankshaft, a transmission connecting rod, a transmission joint, and a counterweight balancing block, wherein the vibration driving source is connected to the transmission crankshaft, an eccentric portion is provided on the transmission crankshaft, the upper end of the transmission connecting rod is rotatably sleeved on the outer periphery of the eccentric portion, the counterweight balancing block is fixed on the transmission crankshaft, and the transmission joint comprises a joint main body connected to the fixed knife shaft and a joint transmission arm hinged to the lower end of the transmission connecting rod. The present application additionally provides a counterweight balancing block on the transmission crankshaft to balance the upper and lower ends of the vibration transmission mechanism, eliminate the shaking phenomenon of the transmission crankshaft during high-frequency operation, ensure the stability of the fixed knife shaft and the cutting knife moving up and down, and improve the cutting quality.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting machines, and in particular to a high-frequency vibration knife module and a cutting machine including the high-frequency vibration knife module. Background Art

[0002] A cutting table is a type of cutting equipment used to automatically cut pieces, and is widely used in industries such as textiles and apparel, automotive interiors, furniture, luggage, and outdoor products. Typically, a cutting table is equipped with a high-speed cutting blade that moves along a pre-designed path to cut pieces into the desired shape.

[0003] Different cutting blade types are required for different cutting objects, which is why a cutting table is equipped with multiple cutting blade modules (i.e., vibrating blade modules). Each cutting blade module has a vibrating drive source and a cutting blade that moves up and down. When installed in a cutting table, the cutting blade module is assembled into the cutting table's head module, which drives the cutting blade in the cutting blade module to move up and down and rotate, thereby switching the cutting position.

[0004] The cutter module uses a motor as the vibration drive source. When the motor drives the cutter's high-frequency up-and-down reciprocating motion, it typically uses a crankshaft-connecting rod mechanism to transmit power. However, the cutter module's crankshaft-connecting rod mechanism has an unbalanced structure at the upper and lower ends. This causes the crankshaft to vibrate during high-frequency operation, resulting in inaccurate up-and-down reciprocating motion of the cutter and poor cutting quality. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a high-frequency vibration knife module to effectively avoid crankshaft vibration.

[0006] To achieve the above-mentioned objectives, the present invention provides a high-frequency vibration knife module, comprising a base, a vibration driving source mounted on the base, a knife seat assembled at the lower end of the base, a fixed knife shaft supported in the knife seat movably up and down, a cutting knife mounted at the lower end of the fixed knife shaft, and a vibration transmission mechanism accommodated in the base and the knife seat, wherein the vibration driving source is connected to the upper end of the fixed knife shaft through the vibration transmission mechanism, the vibration transmission mechanism comprises a transmission crankshaft rotatably supported in the base, a transmission connecting rod, a transmission joint, and a counterweight balance block, the transmission crankshaft is perpendicular to the fixed knife shaft, the vibration driving source is connected to the transmission crankshaft to drive the transmission crankshaft to rotate, the transmission crankshaft is provided with an eccentric portion, the upper end of the transmission connecting rod is rotatably sleeved on the outer periphery of the eccentric portion, the counterweight balance block is fixed on the transmission crankshaft, the transmission joint comprises a section main body connected to the fixed knife shaft, and two section transmission arms extending from the section main body, the two section transmission arms are arranged on both sides of the lower end of the transmission connecting rod and coaxially hinged with the transmission connecting rod.

[0007] Furthermore, the vibration driving source is a motor, and the motor shaft of the vibration driving source is fixedly connected to the transmission crankshaft through a coupling.

[0008] Furthermore, the transmission crankshaft is fixed with counterweight balancing blocks on both sides of the upper end of the transmission connecting rod, and the material of the transmission joint is lightweight material.

[0009] Furthermore, the high-frequency vibration knife module also includes a transmission connecting pin parallel to the transmission crankshaft, the two ends of the transmission connecting pin are respectively fixed in two transmission arms, and the lower end of the transmission connecting rod is rotatably mounted on the outer periphery of the transmission connecting pin.

[0010] Furthermore, the knife seat is rotatably mounted on the base through a first bearing, the upper end of the fixed knife shaft is rotatably mounted in the section main body through a second bearing, and a fixed knife mechanism capable of transmitting torque is connected between the knife seat and the fixed knife shaft; the fixed knife mechanism includes a fixed knife block fixed to the lower end of the knife seat, a knife clamp installed in the fixed knife block, and a fixed top screw screwed into the knife clamp, the lower end of the fixed knife shaft is provided with a fixed knife section extending into the knife clamp, a knife groove is opened in the knife clamp, the upper end of the cutting knife is inserted in the knife groove, and the fixed top screw, cutting knife and fixed knife section are pressed tightly in sequence.

[0011] Furthermore, the tool holder is provided with a first receiving groove which is adapted to the outer peripheral contour of the fixed knife segment and communicated with the knife groove, the first receiving groove has two limiting slots, the groove wall of the first receiving groove has a first limiting plane distributed between the two limiting slots, the fixed knife segment is accommodated in the first receiving groove, the fixed knife segment has a second limiting plane which is in surface contact with the first limiting plane, and a limiting protrusion which is clamped in the limiting slot.

[0012] Furthermore, a second receiving groove adapted to the outer peripheral contour of the tool holder is provided in the fixed knife block, and the tool holder can be assembled in the second receiving groove so as to move up and down; the second receiving groove includes a circular groove body and a rectangular groove body that are connected to each other, and the tool holder has a cylindrical body accommodated in the circular groove body, and a rectangular body accommodated in the rectangular groove body.

[0013] Furthermore, the knife fixing mechanism also includes a radial support bearing installed in the knife seat, the central axis of the radial support bearing is perpendicular to the knife fixing shaft, and the radial support bearing abuts against the side of the knife fixing shaft facing away from the fixed top screw.

[0014] Furthermore, the high-frequency vibration knife module also includes a connecting sleeve mounted on the outer periphery of the lower end of the knife seat, and a knife disc mounted on the outer periphery of the lower end of the connecting sleeve. The knife fixing mechanism and the cutting knife are both accommodated in the connecting sleeve and the knife disc. The lower end of the knife disc is integrally provided with a bottom end plate, and a knife groove running through the top and bottom is opened in the bottom end plate. The knife groove only allows the cutting knife to extend downward from the knife disc.

[0015] Furthermore, the high-frequency vibration knife module also includes a positioning pin and a fixing spring; a first radially penetrating connecting groove is provided in the knife disc, a second connecting groove is provided on the outer periphery of the connecting sleeve, and the fixing spring is detachably clamped in the first connecting groove and the second connecting groove; the positioning pin is fixed in the knife disc, and a positioning pin hole is provided in the connecting sleeve for positioning with the positioning pin; the connecting sleeve and the knife seat are clearance-fitted and connected by a fixing screw, and a connecting hole for accommodating the fixing screw is also provided on the connecting sleeve, and the connecting hole is a waist-shaped hole extending up and down.

[0016] Furthermore, a first oil filling port is provided in the fixed knife block, a first oil groove is provided between the fixed knife block and the tool holder, and the inner end of the first oil filling port is connected to the first oil groove; an oil outlet is provided in the tool holder, one end of the oil outlet is connected to the first oil groove, and the other end extends to the outer peripheral surface of the fixed knife section.

[0017] Furthermore, a second oil filling port and a third oil filling port are provided in the base, both of which are connected inside and outside. A second oil groove connected to the inner end of the second oil filling port is provided in the transmission crankshaft, and the inner end of the third oil filling port extends to the rotational matching point between the transmission crankshaft and the base.

[0018] Furthermore, the high-frequency vibration knife module also includes a first cooling fan and a second cooling fan; the base has a cooling shell, the vibration drive source is fixed in the cooling shell, and a plurality of cooling fins are provided on the periphery of the cooling shell. The first cooling fan is fixed in the cooling shell and arranged at the end of the vibration drive source. The end of the cooling shell is provided with a first air outlet that passes through the inside and outside and is connected to the first cooling fan; the second cooling fan is fixed in the base and is arranged on the upper side of the transmission crankshaft. The base is provided with a second air outlet that passes through the inside and outside and is connected to the second cooling fan.

[0019] Furthermore, the high-frequency vibration knife module also includes a quick-change connecting block fixed to the base, and a plurality of circumferentially spaced connecting lugs are fixed to the outer periphery of the quick-change connecting block, and a ball screw is installed in each connecting lug, and the steel ball of the ball screw protrudes downward from the lower end surface of the connecting lug.

[0020] The present application also relates to a cutting table, in which the high-frequency vibration knife module as described above is configured.

[0021] As described above, the high-frequency vibration knife module and cutting machine according to the present invention have the following beneficial effects:

[0022] In the present application, the vibration drive source drives the fixed knife shaft and the cutting knife to move up and down through the vibration transmission mechanism, providing power for the cutting knife; in particular, the vibration transmission mechanism adopts the structure of a transmission crankshaft, a transmission connecting rod and a transmission joint, and the power transmission is stable and reliable. An additional counterweight balance block is added to the transmission crankshaft to balance the upper and lower ends of the vibration transmission mechanism, thereby eliminating the shaking phenomenon of the transmission crankshaft during high-frequency operation, and making the transmission crankshaft transmit power more reliably and stably, thereby ensuring the stability of the fixed knife shaft and the cutting knife moving up and down, improving the cutting quality, and enhancing the product competitiveness of the high-frequency vibration knife module in mid-to-high-end models, which is conducive to the rapid expansion of domestic and overseas single-layer market customers such as clothing, advertising, composite materials, carpets and floor mats. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 and Figure 2 This is a schematic diagram of the structure of the high-frequency vibration knife module in this application at different viewing angles.

[0024] Figure 3 This is a cross-sectional view of the high-frequency vibration knife module in this application.

[0025] Figure 4 This is a structural diagram of the vibration transmission mechanism in this application.

[0026] Figure 5 This is a schematic diagram of the structure of the connection between the transmission connecting rod and the transmission joint of this application.

[0027] Figure 6 Schematic diagram of the structure of the transmission connecting rod in this application.

[0028] Figure 7 for Figure 3 Schematic diagram of the structure of the lower part.

[0029] Figure 8 This is a structural diagram of the knife fixing mechanism in this application.

[0030] Figure 9 This is a schematic diagram of the structure of the fixed knife shaft in this application.

[0031] Figure 10 This is a schematic diagram of the structure of the tool holder in this application.

[0032] Figure 11 This is a schematic diagram of the structure of the cutter head in this application.

[0033] Figure 12 This is a structural diagram of the ball screw in this application.

[0034] Figure 13 This is a structural diagram of the high-frequency vibration knife module of this application being installed in the head module.

[0035] Figure 14 for Figure 13 Schematic diagram of the structure of the middle head module.

[0036] Figure 15 for Figure 14 Enlarged view of circle A.

[0037] Component number description

[0038] 10 Vibration drive source

[0039] 20 base

[0040] 21 Second oil filling port

[0041] 22 Third oil filling port

[0042] 23 heat dissipation housing

[0043] 24 cooling fins

[0044] 25 First Wind

[0045] 26 Second Wind Outlet

[0046] 30 knife holder

[0047] 40 fixed knife shaft

[0048] 41 fixed blade section

[0049] 42 Second limit plane

[0050] 43 Limiting convex part

[0051] 44 Limiting steps

[0052] 50 cutter

[0053] 60 Vibration transmission mechanism

[0054] 61 Drive crankshaft

[0055] 611 eccentric part

[0056] 612 Second Oil Tank

[0057] 62 Transmission connecting rod

[0058] 621 radial slot

[0059] 63 transmission joint

[0060] Section 631 Main body

[0061] 632-section transmission arm

[0062] 633 positioning ring

[0063] 64 counterweight balance block

[0064] 65 Coupling

[0065] 66 Transmission connecting pin

[0066] 71 First bearing

[0067] 72 Second bearing

[0068] 73 Third bearing

[0069] 74 Fourth bearing

[0070] 75 linear bearings

[0071] 80 knife fixing mechanism

[0072] 81 fixed knife block

[0073] 811 Second Container

[0074] 812 First oil filling port

[0075] 82 knife holder

[0076] 821 Slot

[0077] 822 First Tank

[0078] 823 limit slot

[0079] 824 First limit plane

[0080] 825 cylinder

[0081] 826 rectangular body

[0082] 83 fixed top screw

[0083] 84 radial support bearing

[0084] 90 connecting sleeve

[0085] 110 blade

[0086] 111 bottom end plate

[0087] 112 knife guide groove

[0088] 113 First connection slot

[0089] 121 positioning pin

[0090] 122 fixed spring

[0091] 123 fixing screw

[0092] 131 First cooling fan

[0093] 132 Second cooling fan

[0094] 140 Quick-change connection block

[0095] 141 Connecting lug

[0096] 150 ball-end screws

[0097] 151 Steel Balls

[0098] 160 end stopper

[0099] 170 flat key

[0100] 180 Quick Change Mount

[0101] 181 limit lug

[0102] 182 slots

[0103] 190 Spacer

[0104] 191 snap-in recess DETAILED DESCRIPTION

[0105] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0106] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0107] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0108] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0109] The present application relates to a high-frequency vibration knife module and a cutting table equipped with the high-frequency vibration knife module.

[0110] like Figures 1 to 3 As shown, the high-frequency vibration knife module involved in the present application includes a base 20, a vibration drive source 10 installed on the base 20, a knife seat 30 assembled at the lower end of the base 20, a fixed knife shaft 40 supported in the knife seat 30 so as to be movable up and down through a linear bearing 75, a cutting knife 50 installed at the lower end of the fixed knife shaft 40, and a vibration transmission mechanism 60 accommodated in the base 20 and the knife seat 30. Among them, the base 20 is composed of several fixedly connected shells, one of which extends up and down and is distributed on the upper end side of the knife seat 30. The base 20 is installed in the head module of the cutting machine through the shell, thereby installing the high-frequency vibration knife module as a whole in the head module. The fixed knife shaft 40 extends axially in the up and down directions, and the vibration drive source 10 is connected to the upper end of the fixed knife shaft 40 through the vibration transmission mechanism 60, driving the fixed knife shaft 40 to move back and forth up and down. As shown Figure 3 and Figure 4 As shown, the vibration transmission mechanism 60 includes a transmission crankshaft 61 rotatably supported in the base 20, a transmission connecting rod 62, a transmission joint 63, and a counterweight 64. The transmission crankshaft 61 is perpendicular to the fixed blade shaft 40 and extends axially in the horizontal direction. The vibration drive source 10 is connected to the transmission crankshaft 61 to drive the transmission crankshaft 61 to rotate. The transmission crankshaft 61 is provided with an eccentric portion 611. The upper end of the transmission connecting rod 62 is rotatably mounted on the outer periphery of the eccentric portion 611. The counterweight 64 is fixed to the transmission crankshaft 61. The transmission joint 63 includes a joint body 631 connected to the upper end of the fixed blade shaft 40 and two joint transmission arms 632 extending upward from the joint body 631. The two joint transmission arms 632 are arranged on either side of the lower end of the transmission connecting rod 62 and are coaxially hinged with the transmission connecting rod 62. The internal space of the base 20 should not interfere with the movement of the transmission connecting rod 62.

[0111] During the cutting process, the vibration drive source 10 drives the transmission crankshaft 61 to rotate at high speed. This, in turn, drives the transmission link 63 via the transmission connecting rod 62, which in turn moves the fixed blade shaft 40 and the cutting blade 50 at its lower end up and down at high speed. This allows the cutting blade 50 to cut the sheet, and the vibration drive source 10 provides the cutting power for the cutting blade 50. The vibration transmission mechanism 60, comprised of the transmission crankshaft 61, transmission connecting rod 62, and transmission link 63, ensures stable and reliable power transmission. In particular, the vibration transmission mechanism 60 is additionally provided with a counterweight balancing block 64 on the transmission crankshaft 61 to balance the upper and lower ends of the vibration transmission mechanism 60, thereby eliminating the shaking phenomenon of the transmission crankshaft 61 during high-frequency operation, and making the transmission crankshaft 61 transmit power more reliably and stably, thereby ensuring the stability of the up and down movement of the fixed knife shaft 40 and the cutting knife 50, improving the cutting quality, and enhancing the product competitiveness of the high-frequency vibration knife module in mid-to-high-end models, which is conducive to the rapid expansion of domestic and overseas single-layer market customers such as clothing, advertising, composite materials, carpets and floor mats.

[0112] Further, if Figure 3 and Figure 4 As shown, the vibration drive source 10 is a motor, preferably a stepping motor, and the motor shaft of the vibration drive source 10 is fixedly connected to the transmission crankshaft 61 through a coupling 65. Both ends of the transmission crankshaft 61 are rotatably supported in the base 20 through third bearings 73.

[0113] Furthermore, the transmission crankshaft 61 is fixed with counterweights 64 on both sides of the upper end of the transmission connecting rod 62, and the counterweights 64 are arranged between the third bearing 73 and the upper end of the transmission connecting rod 62. At the same time, the material of the transmission joint 63 is lightweight, such as titanium alloy. The counterweights 64 increase the weight at the upper end of the vibration transmission mechanism 60, and the transmission joint 63 made of titanium alloy reduces the weight at the lower end of the vibration transmission mechanism 60. Through the combined effect of the counterweights 64 and the lightweight transmission joint 63, the upper and lower ends of the vibration transmission mechanism 60 are better balanced, and the vibration of the transmission crankshaft 61 is more reliably avoided. Preferably, the counterweights 64 are fixed to the outer periphery of the transmission crankshaft 61 by screws.

[0114] Further, if Figures 1 to 3As shown, the high-frequency vibration knife module also includes a first cooling fan 131 and a second cooling fan 132. The base 20 has a horizontally extending heat dissipation housing 23. The vibration drive source 10 is fixed within the heat dissipation housing 23. The outer periphery of the heat dissipation housing 23 is provided with a plurality of cooling fins 24. The first cooling fan 131 is fixed within the heat dissipation housing 23 and arranged at the end of the vibration drive source 10. The end of the heat dissipation housing 23 is provided with a first air vent 25 that is open and connected to the first cooling fan 131. This not only increases the heat dissipation effect of the vibration drive source 10 through the cooling fins 24, but also increases the heat dissipation effect of the vibration drive source 10 through the first cooling fan 131 and the first air vent 25, thereby ensuring high-frequency operation. The second cooling fan 132 is fixed within the base 20 and arranged above the drive crankshaft 61. The base 20 is provided with a second air vent 26 that is open and connected to the second cooling fan 132. The second cooling fan 132 and the second air vent 26 increase the heat dissipation effect of the drive crankshaft 61, thereby ensuring high-frequency operation.

[0115] Furthermore, the connection structure between the lower end of the transmission connecting rod 62 and the transmission joint 63 is preferably as follows: Figure 4 and Figure 5 As shown, the high-frequency vibration knife module also includes a transmission connecting pin 66 parallel to the transmission crankshaft 61. The two ends of the transmission connecting pin 66 are respectively fixed in the two transmission arms 632. The lower end of the transmission connecting rod 62 is rotatably mounted on the outer periphery of the transmission connecting pin 66, thereby hingedly connecting the transmission connecting rod 62 to the transmission section 63. In this embodiment, the upper end of the transmission connecting rod 62 is rotationally matched with the eccentric portion 611 of the transmission crankshaft 61 through the fourth bearing 74, and the lower end of the transmission connecting rod 62 is also rotationally matched with the transmission connecting pin 66 through the fourth bearing 74. Preferably, as Figure 6 As shown, a radial through slot 621 is provided at the upper end of the transmission connecting rod 62, so that the upper end of the transmission connecting rod 62 is an open structure, which facilitates the transmission connecting rod 62 to be fitted on the outer periphery of the eccentric portion 611 of the transmission crankshaft 61; after the fitting is completed, the radial through slot 621 is locked with a screw.

[0116] Further, if Figure 13 and Figure 14 As shown, the head module has a rotation drive source and a reversing rotating sleeve driven by the rotation drive source; when the high-frequency vibration knife module is installed in the head module, the reversing rotating sleeve is connected to the knife seat 30, transmitting the torque to the knife seat 30, and the knife seat 30 then transmits the torque to the fixed knife shaft 40. Based on this, as Figure 3 and Figure 7 As shown, the upper end of the knife seat 30 is rotatably mounted on the lower end of the base 20 through a first bearing 71, and the upper end of the fixed knife shaft 40 is rotatably mounted in the section main body 631 through a second bearing 72. A fixed knife mechanism 80 capable of transmitting torque is connected between the knife seat 30 and the fixed knife shaft 40.

[0117] Furthermore, the preferred structure of the knife fixing mechanism 80 is as follows: Figures 7 to 10 As shown, the fixed blade mechanism 80 includes a fixed blade block 81 fixed to the lower end of the blade holder 30 by a pin, a blade clamp 82 installed in the fixed blade block 81, and two fixed top screws 83 both screwed into the blade clamp 82. The lower end of the fixed blade shaft 40 is provided with a fixed blade segment 41 extending downward into the blade clamp 82. The blade clamp 82 is provided with a blade groove 821. The lower end of the blade groove 821 extends downward through the blade clamp 82. The blade groove 821 extends through the blade clamp 82 toward one end of the fixed blade segment 41. The upper end of the cutting blade 50 is inserted into the blade groove 821. The two fixed top screws 83 are arranged in an upper and lower arrangement. When the fixed top screw 83 is screwed into the blade clamp 82, the fixed top screw 83, the cutting blade 50 and the fixed blade segment 41 are pressed against each other in sequence, thereby fixing the cutting blade 50 and the fixed blade shaft 40, so that the cutting blade 50 moves synchronously with the fixed blade shaft 40. When switching the cutting position, the rotary drive source in the head module is activated, driving the reversing rotating sleeve to rotate through the set angle, and the reversing rotating sleeve drives the knife holder 30 and the fixed knife block 81 to rotate through the same angle, and the fixed knife block 81 drives the knife clamp 82, the fixed knife shaft 40 and the cutting knife 50 to rotate through the same angle, thereby changing the cutting direction of the cutting knife 50.

[0118] Preferably, the connection structure between the fixed blade shaft 40 and the main body 631 of the transmission joint 63 is as follows: Figure 7 As shown, a circle of inwardly protruding positioning convex ring 633 is provided at the lower end of the main body 631 of the section, and the fixed blade shaft 40 is passed through the positioning convex ring 633, and the two are clearance-matched; Figure 9 As shown, a limiting step 44 is fixed to the outer periphery of the fixed blade shaft 40, and the limiting step 44 is distributed on the lower side of the positioning protrusion 633; ​​an end limiting block 160 is fixed to the upper end of the fixed shaft by a screw; there are two second bearings 72, which are arranged up and down, and the upper second bearing 72 is axially positioned between the end limiting block 160 and the positioning protrusion 633, and the upper second bearing 72 is axially positioned between the positioning protrusion 633 and the limiting step 44.

[0119] Further, if Figures 8 to 10As shown, the knife holder 82 defines a first receiving groove 822 that conforms to the outer contour of the fixed blade segment 41 and communicates with the blade slot 821. The first receiving groove 822 has two upper and lower limiting slots 823. The wall of the first receiving groove 822 has a first limiting plane 824 located between the two limiting slots 823. The fixed blade segment 41 is accommodated in the first receiving groove 822. The fixed blade segment 41 has a second limiting plane 42 that engages with the first limiting plane 824, and a limiting protrusion 43 that engages with the limiting slot 823. The cooperation between the first limiting plane 824 and the second limiting plane 42 effectively limits the swing of the cutting blade 50. Simultaneously, the cooperation between the limiting protrusion 43 and the limiting slot 823 more reliably limits the swing of the cutting blade 50, thereby precisely controlling the cutting blade tip angle of the cutting blade 50. In this embodiment, the main body of the first receiving groove 822 and the main body of the fixed blade segment 41 are both semi-cylindrical structures.

[0120] Further, if Figure 8 As shown, the fixed blade block 81 is provided with a second receiving groove 811 that matches the outer contour of the blade holder 82. The blade holder 82 is assembled in the second receiving groove 811 so as to be movable up and down. The second receiving groove 811 includes a circular groove body and a rectangular groove body that communicate with each other. The blade holder 82 has a cylindrical body 825 accommodated in the circular groove body and a rectangular body 826 accommodated in the rectangular groove body. Both fixed top screws 83 are screwed into the rectangular body 826. This allows the blade holder 82 to move up and down relative to the fixed blade block 81 during the cutting process. When switching cutting positions, torque can be transmitted, causing the blade holder 82 to rotate through the same angle as the fixed blade block 81.

[0121] Furthermore, after the high-frequency vibration knife module is installed in the head module as a whole, the reversing rotating sleeve of the head module and the knife seat 30 of the high-frequency vibration knife module are preferably key-connected, and the torque of the reversing rotating sleeve is reliably transmitted to the knife seat 30 through the flat key 170. Based on this, if Figure 3 As shown, a keyway is provided on the outer circumference of the tool holder 30 , in which a flat key 170 is fixed by screws. The tool holder 30 is connected to the reversing rotating sleeve key in the head module via the flat key 170 in the keyway.

[0122] Preferably, if Figure 7 As shown, the blade fixing mechanism 80 further includes a radial support bearing 84 mounted in the blade holder 30. The central axis of the radial support bearing 84 is perpendicular to the blade fixing shaft 40, and the radial support bearing 84 abuts against the side of the blade fixing shaft 40 that faces away from the fixed top screw 83. The provision of the radial support bearing 84 prevents the elongated blade fixing shaft 40 from deforming due to stress during the cutting process, thereby preventing high-temperature friction between the blade holder 82 and the blade fixing block 81 as the blade holder 82 reciprocates up and down within the blade fixing block 81.

[0123] Furthermore, in order to better realize the high-frequency motion of the high-frequency vibration knife module, a lubrication structure is also required. In this application, there are three lubrication structures: 1. Figure 7 As shown, a first oil inlet 812 is provided in the fixed blade block 81, and a first oil groove is provided between the fixed blade block 81 and the tool holder 82. The inner end of the first oil inlet 812 is connected to the first oil groove; an oil outlet is provided in the tool holder 82, one end of the oil outlet is connected to the first oil groove, and the other end extends to the outer peripheral surface of the fixed blade segment 41; during high-speed operation, the lubricating oil in the first oil groove is thrown out, and plays a lubricating role at the fitting point between the tool holder 82 and the fixed blade block 81. 2. A second oil inlet 21 is provided in the base 20, which is both internally and externally connected. A second oil groove 612 is provided in the transmission crankshaft 61, which is connected to the inner end of the second oil inlet 21; during high-speed operation, the lubricating oil in the second oil groove 612 is thrown out, and plays a lubricating role at the fitting point between the transmission crankshaft 61 and the base 20. 3. A third oil filling port 22 is provided in the base 20 , which is connected inside and outside. The inner end of the third oil filling port 22 extends to the rotational fit between the transmission crankshaft 61 and the base 20 , thereby providing lubrication at the fit between the transmission crankshaft 61 and the base 20 .

[0124] Further, if Figures 1 to 3 As shown, the high-frequency vibration knife module also includes a connecting sleeve 90 mounted on the outer periphery of the lower end of the knife holder 30, and a knife disc 110 mounted on the outer periphery of the lower end of the connecting sleeve 90. The knife fixing mechanism 80 and the cutting knife 50 are both accommodated in the connecting sleeve 90 and the knife disc 110. The lower end of the knife disc 110 is integrally provided with a bottom end plate 111, and a knife guide groove 112 is opened in the bottom end plate 111 and runs through from top to bottom. The knife guide groove 112 only allows the cutting knife 50 to extend downward from the knife disc 110, thereby providing better protection and dust prevention.

[0125] Further, if Figure 1 、 Figure 2 、 Figure 7 and Figure 11 As shown, the high-frequency vibration blade module also includes a positioning pin 121 and a fixing spring 122; a first connecting groove 113 extending radially through the blade disc 110 is provided, and a second connecting groove is provided on the outer periphery of the connecting sleeve 90. The fixing spring 122 is detachably mounted in the first connecting groove 113 and the second connecting groove, thereby enabling quick disassembly of the blade disc 110. The positioning pin 121 is fixed to the blade disc 110, and a positioning pin hole is provided in the connecting sleeve 90 to cooperate with the positioning pin 121; the connecting sleeve 90 and the blade holder 30 are clearance-fitted and connected by a fixing screw 123. The connecting sleeve 90 also has a connecting hole for accommodating the fixing screw 123. The connecting hole is a waist-shaped hole extending vertically to achieve positioning of the blade disc 110 and the connecting sleeve 90 during installation.

[0126] Further, if Figure 1 and Figure 2As shown, the high-frequency vibration knife module also includes a quick-change connection block 140 fixed to the base 20, and the high-frequency vibration knife module is quickly replaced in the head module through the quick-change connection block 140. Specifically, Figure 1 and Figure 2 As shown, the outer periphery of the quick-change connection block 140 is fixed with three circumferentially spaced connection lugs 141, and each connection lug 141 is installed with two ball screws 150; Figure 12 As shown, the ball screw 150 has a steel ball 151 that can be extended and retracted up and down. A spring is disposed inside the ball screw 150 to abut against the steel ball 151. The spring allows the steel ball 151 at the lower end of the ball screw 150 to emerge downward from the lower end surface of the connecting lug 141, and also allows the steel ball 151 to retract upward into the ball screw 150. Figures 13 to 15 As shown, the head module has a quick-change mounting seat 180, and the upper end of the quick-change mounting seat 180 is provided with three circumferentially spaced limiting lugs 181, and three slots 182 formed between two adjacent limiting lugs 181. The head module is provided with a locking gasket 190 fixed to the quick-change mounting seat 180 at the lower end of the quick-change mounting seat 180, and a pre-tightening O-ring abutting the lower end of the locking gasket 190. The upper end surface of the locking gasket 190 is provided with several concave locking recesses 191. When installing the high-frequency vibration knife module in the head module, first remove the knife disc 110 at the lower end of the high-frequency vibration knife module; insert the high-frequency vibration knife module into the quick-change mounting seat 180 from top to bottom, and align the connecting lug 141 of the high-frequency vibration knife module with the slot 182 of the head module; after the high-frequency vibration knife module is inserted into place downward, rotate the high-frequency vibration knife module at an angle until the steel balls 151 at the lower ends of several ball screws 150 of the high-frequency vibration knife module are just stuck in the clamping recess 191 of the head module. At this time, the limiting lug 181 of the head module just abuts the upper side of the connecting lug 141 of the high-frequency vibration knife module, and the clamping gasket 190 of the head module abuts the lower side of the connecting lug 141 of the high-frequency vibration knife module, and the elastic pre-tightening O-ring provides pre-tightening force to eliminate the axial gap, thereby realizing the axial limitation of the quick-change connecting block 140 in the head module and preventing the high-frequency vibration knife module from axially moving relative to the quick-change mounting seat 180 of the head module.

[0127] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0128] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A high-frequency vibration knife module, comprising a base (20), a vibration driving source (10) mounted on the base (20), a knife seat (30) assembled at the lower end of the base (20), a fixed knife shaft (40) supported in the knife seat (30) so as to be movable up and down, a cutting knife (50) mounted at the lower end of the fixed knife shaft (40), and a vibration transmission mechanism (60) accommodated in the base (20) and the knife seat (30), wherein the vibration driving source (10) is connected to the upper end of the fixed knife shaft (40) through the vibration transmission mechanism (60), and is characterized in that: The vibration transmission mechanism (60) includes a transmission crankshaft (61) rotatably supported in a base (20), a transmission connecting rod (62), a transmission joint (63), and a counterweight (64). The transmission crankshaft (61) is perpendicular to the fixed blade shaft (40). The vibration driving source (10) is connected to the transmission crankshaft (61) to drive the transmission crankshaft (61) to rotate. The transmission crankshaft (61) is provided with an eccentric portion (611). The transmission connecting rod ( The upper end of the eccentric portion (62) is rotatably sleeved on the outer periphery of the eccentric portion (611), the counterweight balancing block (64) is fixed on the transmission crankshaft (61), and the transmission section (63) includes a section main body (631) connected to the fixed blade shaft (40), and two section transmission arms (632) extending from the section main body (631), and the two section transmission arms (632) are arranged on both sides of the lower end of the transmission connecting rod (62) and are coaxially hinged with the transmission connecting rod (62); The knife seat (30) is rotatably mounted on the base (20) via a first bearing (71), and the upper end of the fixed knife shaft (40) is rotatably mounted in the section main body (631) via a second bearing (72). A fixed knife mechanism (80) capable of transmitting torque is connected between the knife seat (30) and the fixed knife shaft (40); the fixed knife mechanism (80) comprises a fixed knife block (81) fixed to the lower end of the knife seat (30), a knife clamp (82) mounted in the fixed knife block (81), and a fixed top screw (83) screwed into the knife clamp (82); the lower end of the fixed knife shaft (40) is provided with a fixed knife section (41) extending into the knife clamp (82), and the knife clamp (82) is provided with a knife groove (821). The upper end of the cutting knife (50) is inserted into the knife groove (821), and the fixed top screw (83), the cutting knife (50) and the fixed knife section (41) are pressed in sequence.

2. The high-frequency vibration knife module according to claim 1, characterized in that: The vibration driving source (10) is a motor, and the motor shaft of the vibration driving source (10) is fixedly connected to the transmission crankshaft (61) via a coupling (65).

3. The high-frequency vibration knife module according to claim 1, characterized in that: The transmission crankshaft (61) is fixed with counterweight balancing blocks (64) on both sides of the upper end of the transmission connecting rod (62), and the material of the transmission section (63) is lightweight material.

4. The high-frequency vibration knife module according to claim 1, characterized in that: It also includes a transmission connecting pin (66) parallel to the transmission crankshaft (61), the two ends of the transmission connecting pin (66) are respectively fixed in the two transmission arms (632), and the lower end of the transmission connecting rod (62) is rotatably sleeved on the outer periphery of the transmission connecting pin (66).

5. The high-frequency vibration knife module according to claim 1, characterized in that: The knife clamp (82) is provided with a first receiving groove (822) adapted to the outer peripheral contour of the fixed knife segment (41) and communicating with the knife groove (821), the first receiving groove (822) has two limiting grooves (823), the groove wall of the first receiving groove (822) has a first limiting plane (824) distributed between the two limiting grooves (823), the fixed knife segment (41) is accommodated in the first receiving groove (822), the fixed knife segment (41) has a second limiting plane (42) in surface contact with the first limiting plane (824), and a limiting protrusion (43) clamped in the limiting groove (823).

6. The high-frequency vibration knife module according to claim 1, characterized in that: The fixed knife block (81) is provided with a second receiving groove (811) adapted to the outer peripheral contour of the knife holder (82), and the knife holder (82) can be assembled in the second receiving groove (811) so as to move up and down; the second receiving groove (811) includes a circular groove body and a rectangular groove body that are connected to each other, and the knife holder (82) has a cylindrical body (825) accommodated in the circular groove body, and a rectangular body (826) accommodated in the rectangular groove body.

7. The high-frequency vibration knife module according to claim 1, characterized in that: The knife fixing mechanism (80) further includes a radial support bearing (84) installed in the knife seat (30), wherein the central axis of the radial support bearing (84) is perpendicular to the knife fixing shaft (40), and the radial support bearing (84) abuts against the side of the knife fixing shaft (40) facing away from the fixed top screw (83).

8. The high-frequency vibration knife module according to claim 1, characterized in that: The invention also includes a connecting sleeve (90) mounted on the outer periphery of the lower end of the knife seat (30), and a knife disc (110) mounted on the outer periphery of the lower end of the connecting sleeve (90), wherein the knife fixing mechanism (80) and the cutting knife (50) are both accommodated in the connecting sleeve (90) and the knife disc (110), and the lower end of the knife disc (110) is integrally provided with a bottom end plate (111), and the bottom end plate (111) is provided with a knife guide groove (112) extending vertically therethrough, and the knife guide groove (112) only allows the cutting knife (50) to extend downward from the knife disc (110).

9. The high-frequency vibration knife module according to claim 8, characterized in that: The utility model also includes a positioning pin (121) and a fixing spring (122); a first connecting groove (113) extending radially through the cutter disc (110) is provided in the cutter disc (110), a second connecting groove is provided on the outer periphery of the connecting sleeve (90), and the fixing spring (122) is detachably mounted in the first connecting groove (113) and the second connecting groove; the positioning pin (121) is fixed in the cutter disc (110), and a positioning pin hole for positioning and matching with the positioning pin (121) is provided in the connecting sleeve (90); the connecting sleeve (90) and the cutter seat (30) are clearance-matched and connected by a fixing screw (123); a connecting hole for accommodating the fixing screw (123) is also provided on the connecting sleeve (90), and the connecting hole is a waist-shaped hole extending up and down.

10. The high-frequency vibration knife module according to claim 1, characterized in that: A first oil filling port (812) is provided in the fixed knife block (81), a first oil groove is provided between the fixed knife block (81) and the knife clamp (82), and the inner end of the first oil filling port (812) is connected to the first oil groove; an oil outlet is provided in the knife clamp (82), one end of the oil outlet is connected to the first oil groove, and the other end extends to the outer peripheral surface of the fixed knife segment (41).

11. The high-frequency vibration knife module according to claim 1, characterized in that: The base (20) is provided with a second oil filling port (21) and a third oil filling port (22) which are both connected inside and outside. The transmission crankshaft (61) is provided with a second oil groove (612) which is connected to the inner end of the second oil filling port (21). The inner end of the third oil filling port (22) extends to the rotational engagement position of the transmission crankshaft (61) and the base (20).

12. The high-frequency vibration knife module according to claim 1, characterized in that: The invention also includes a first heat dissipation fan (131) and a second heat dissipation fan (132); the base (20) has a heat dissipation shell (23); the vibration drive source (10) is fixed in the heat dissipation shell (23); a plurality of heat dissipation fins (24) are provided on the periphery of the heat dissipation shell (23); the first heat dissipation fan (131) is fixed in the heat dissipation shell (23) and arranged at the end of the vibration drive source (10); the end of the heat dissipation shell (23) is provided with a first air outlet (25) which is connected to the first heat dissipation fan (131); the second heat dissipation fan (132) is fixed in the base (20) and arranged on the upper side of the transmission crankshaft (61); the base (20) is provided with a second air outlet (26) which is connected to the second heat dissipation fan (132) and is connected to the second heat dissipation fan (132).

13. The high-frequency vibration knife module according to claim 1, characterized in that: The quick-change connecting block (140) is fixed to the base (20), and a plurality of circumferentially spaced connecting lugs (141) are fixedly provided on the outer periphery of the quick-change connecting block (140). A ball screw (150) is installed in each connecting lug (141), and a steel ball (151) of the ball screw (150) protrudes downward from the lower end surface of the connecting lug (141).

14. A cutting machine, characterized by: The cutting bed is equipped with the high-frequency vibration knife module according to any one of claims 1 to 13.

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