Trimming circle shear

Abstract

The trimming circle shear comprises a base, two shear bodies, an opening degree adjusting device and a power device, the two shear bodies are symmetrically connected to the base in a sliding mode, each shear body comprises a rack, an upper cutter head assembly, a lower cutter head assembly and a transmission assembly, the upper cutter head assembly, the lower cutter head assembly and the transmission assembly are arranged on the rack, and a cutter shaft of each upper cutter head assembly is connected with a first straight gear; a first straight gear is connected to a cutter shaft of the upper cutter head assembly, a second straight gear is connected to a cutter shaft of the lower cutter head assembly, a bevel gear is connected to a transmission shaft sleeve of the transmission assembly, the first straight gear, the second straight gear and the bevel gear are sequentially in transmission connection, and the cutter shaft axis of the upper cutter head assembly and the cutter shaft axis of the lower cutter head assembly are arranged in parallel. The included angle between the helical angle of the helical gear, the cutter shaft axis of the upper cutter assembly and the transmission shaft sleeve axis of the transmission assembly is equal to the cutter swing angle of the trimming circle shear, and the helical gears on the two shear bodies are opposite in rotation direction; and the like. According to the shear, the axes of the transmission shaft sleeves of the shear bodies on the two sides can be overlapped while the shear bodies on the two sides have the needed cutter head swing angle.

Description

Technical Field

[0001] The invention relates to the technical field of trimming circular shears, in particular to a trimming circular shears. Background Art

[0002] With the improvement of living standards and the development of technology, the food-grade cold-rolled strip finishing unit - electroplating tinning continuous unit has developed rapidly. Its product electroplated tinplate is widely used in food packaging, canning and other food industries. Due to the high price of tinplate, high product added value and strong market demand, it has been favored by many steel mills.

[0003] The thickness of electroplated tinplate is very thin, generally 0.1-0.6mm. In order to achieve a large-scale production capacity, the production speed of the unit is extremely fast. At present, the maximum process speed of the electroplating tinning unit for stable production has reached 450m / min, and the maximum production speed of the inlet and outlet sections has reached 550m / min, which puts extremely stringent requirements on the trimming disc shears equipped with the unit.

[0004] The functions of the trimming disc shears equipped in the tinning unit are: first, to shear the edges of the strip at high speed to obtain extremely high-quality shear sections, remove edge defects and avoid new defects; second, to meet the width sizing accuracy requirements of the finished steel coils.

[0005] In order to meet the shearing process requirements of the circular shear, the cutter discs on both sides of the circular shear must have a strictly applicable swing angle relative to the strip steel. The value and direction of this swing angle are extremely strict and cannot change during strip shearing, otherwise serious cutting quality defects will occur.

[0006] In recent years, with the optimization of the production process of the electroplating tinning unit, the trimming disc shear is arranged at the inlet section of the unit to remove the edge defects of the raw material rolls at the inlet to avoid scratching the surface of the numerous rubber-coated rollers in the unit. Since the maximum production speed of the inlet section is 550m / min, considering that the shearing speed of the disc shear must have a certain lead over the strip speed, the maximum shearing speed of the trimming disc shear reaches 560m / min, that is, the disc shear needs to trim the thinnest strip steel 0.1mm at an ultra-high speed of 560m / min. At this time, more stringent requirements are put forward for the shearing accuracy and stability of the ultra-high-speed operation of the trimming disc shear.

[0007] First of all, the trimming quality requirements of 0.1mm ultra-thin plates include: First, the height of the trimming burr is not more than 0.005mm. Since tinplate is mainly used in the food canning industry, its surface trademarks and patterns are realized through multi-color printing. If the trimming burr on the edge of the plate strip is slightly larger, it will lead to inaccurate positioning of the steel plate during multi-color printing, resulting in defects such as color ghosting and blurred patterns, which will lead to product scrapping. Therefore, high-end tinplate has extremely high requirements for trimming burrs, and then requires that the disc shear disc is at a high speed of 900rpm to rotate and shear the strip steel, the end face accuracy of the disc is extremely high, and the operation is stable, and the shearing accuracy cannot change. Second, the width accuracy of the finished steel coil is required to be 0-0.2mm. Since the disc shear is configured at the entrance section, if the trimming width sizing accuracy does not meet the process requirements, it will lead to the degradation of the finished coil at the least, and the unit will be shut down and produce waste products at the worst. Therefore, it is required that the disc shear is light and flexible when adjusting the opening degree, the positioning is accurate, there is no jamming, the opening degree guide device is stable and reliable, and the positioning and repeated positioning accuracy must meet the above requirements. Third, no new shearing defects such as shearing edge waves should appear after trimming. This requires that the shear body drive shaft and the knife shaft should operate stably and without vibration when shearing at high speed, and the swing angle and direction of the knife disc should not change within the opening adjustment range. If there is any change, it will lead to quality defects such as shearing edge waves, and the product will be downgraded or even scrapped.

[0008] Secondly, there is the stability requirement during ultra-high-speed shearing at 560m / min. Since the thinnest strip thickness of tinplate is 0.1mm, the disc shear needs to adopt a power shear shearing method driven by an AC variable frequency motor. At this time, the rotation speed of the shear blades on both sides reaches 900rpm, and the stability and synchronization of the high-speed rotation of the shear blade shafts on both sides are extremely high. If the synchronization and stability are slightly poor, quality defects such as shear edge waves and increased burrs will occur, and the surface of the rubber roller will be scratched.

[0009] Therefore, when cutting at high speed, the high-speed operation of the disc shear transmission system and the shear body blade shaft must be stable and light without vibration, and the shearing accuracy of the blade must not be affected. However, it is difficult for the current disc shear to ensure the stability of the shear bodies on both sides when the blade shaft rotates at high speed. Summary of the invention

[0010] At present, the swing angle of the cutting disc scissors is obtained by taking the center of the middle coupling of the transmission shaft of the scissors on both sides as the swing center and performing overall symmetrical deflection of the scissors on both sides. The relationship between the cutter track and the equipment axis is as follows: Figure 1As shown, the device for adjusting the opening between the two cutter discs is a variable frequency motor that drives two ball screws (left-handed and right-handed respectively, and the two ball screws are connected by a coupling) to rotate simultaneously after deceleration, thereby driving the shear bodies on both sides to move synchronously toward or away from each other, thereby adjusting the distance (opening) between the cutter discs on both sides. It can be seen that in order to avoid motion interference when adjusting the opening, the ball screws on both sides are also set to symmetrically deflect at the same swing angle with the center of the coupling as the swing center, that is, when adjusting the opening, the shear bodies on both sides move synchronously toward or away from each other on the guide rail along the inclined transmission shaft axis.

[0011] Therefore, the existing trimming disc shears have the following problems: first, the transmission shafts of the shear bodies on both sides are not coaxial, which causes vibration during high-speed shearing and seriously affects the shearing quality; second, when the equipment is actually assembled, it is impossible to unify the assembly reference for detection and achieve strict parallelism of the axis of the transmission shaft of the shear bodies on each side, the axis of the ball screw and the guide surface of the guide rail, resulting in changes in the swing angle of the cutter disc when the opening is adjusted, and even equipment jamming, interference and damage accidents; third, when the parallelism of the axis of the transmission shaft of the shear bodies on each side, the axis of the ball screw and the guide surface of the guide rail is slightly poor, the ball screw is easily jammed and damaged; fourth, since the assembly reference cannot be unified, the workload of re-assembly and adjustment after replacing the ball screw and other wearing spare parts is large, resulting in poor interchangeability of wearing spare parts.

[0012] The object of the present invention is to provide a trimming disc shear which can solve at least one of the above problems existing in the existing trimming disc shears.

[0013] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0014] The present invention provides a trimming circular shear, which is used for shearing continuous strip plates and comprises: a base; two shear bodies symmetrically and slidably connected to the base, wherein the shear bodies comprise a frame and an upper cutter disc assembly, a lower cutter disc assembly and a transmission assembly arranged on the frame, the cutter shaft of the upper cutter disc assembly being connected with a first spur gear, the cutter shaft of the lower cutter disc assembly being connected with a second spur gear, the transmission sleeve of the transmission assembly being connected with a helical gear, the first spur gear, the second spur gear and the helical gear being transmission-connected in sequence, the cutter shaft axis of the upper cutter disc assembly being arranged parallel to the cutter shaft axis of the lower cutter disc assembly, the helix angle of the helical gear, the angle between the cutter shaft axis of the upper cutter disc assembly and the transmission sleeve axis of the transmission assembly being equal to the cutter disc swing angle of the trimming circular shear, and the rotation directions of the helical gears on the two shear bodies are opposite; an opening adjustment device comprises a first driving unit and a first transmission unit which are transmission-connected. A driving unit, wherein the first transmission unit is installed on the base by connecting the bearing seat, and the first transmission unit is connected to the frame of the two shear bodies. Under the drive of the first driving unit, the first transmission unit can drive the two shear bodies to move toward or away from the base synchronously to control the shearing width of the continuous strip plate to be sheared; a power device, including a second driving unit and a second transmission unit with transmission connection, the second transmission unit is fixedly installed on the base, and the two shear bodies are connected to the second transmission unit through the transmission sleeve thereon, and a sliding member slidably connected to the second transmission unit is connected in the transmission sleeve, so that the shear body can move along the second transmission unit under the drive of the first driving unit, and under the drive of the second driving unit, the second transmission unit can drive the transmission sleeve to rotate, so that the cutter discs on the two shear bodies rotate synchronously to cut the continuous strip plate to be sheared.

[0015] Preferably, the second transmission unit includes a transmission coupling and two transmission shafts, the two transmission shafts are coaxially connected through the transmission coupling and installed on the base through a transmission bearing seat, the output end of the second drive unit is connected to the input end of one of the transmission shafts, and the two transmission shafts are correspondingly connected to the transmission sleeves on the two scissor bodies.

[0016] Preferably, the first transmission unit includes a connecting assembly, a coupling and two ball screws, the two ball screws are coaxially connected through a coupling and are installed on the base through the connecting bearing seat, the output end of the first drive unit is connected to the input end of one of the ball screws, the two ball screws are connected to the connecting assembly, and the two ball screws are connected to the frames of the two shear bodies respectively through the connecting assembly thereon.

[0017] Preferably, the connecting assembly includes a screw nut, an intermediate sleeve and a connecting sleeve, the screw nut is threadedly connected to the ball screw, the intermediate sleeve is sleeved on the screw nut, the intermediate sleeve and the connecting sleeve form a clearance fit, and the connecting sleeve is connected to the frame.

[0018] Preferably, the connecting sleeve is provided with an accommodating cavity for accommodating the intermediate sleeve, and a first preset gap is left between the intermediate sleeve and the connecting sleeve along the direction of gravity, and along the movement direction of the continuous strip plate to be sheared, the middle parts of both sides of the intermediate sleeve extend outward to form fin plates, and along the axial direction of the ball screw, a second preset gap is left between the fin plates and the connecting sleeve, and the first preset gap is larger than the second preset gap.

[0019] Preferably, the first preset gap is 10 mm to 20 mm, and the second preset gap is 0.02 mm to 0.05 mm.

[0020] Preferably, the opening adjustment device also includes an absolute value encoder for calculating the distance between the two scissors moving toward or away from each other, and the absolute value encoder is electrically connected to the first drive unit. When the distance calculated by the absolute value encoder meets the distance requirement between the shearing surfaces of the two shears, the absolute value encoder sends a stop signal to the first drive unit.

[0021] Preferably, a guide rail is provided on the base, a connecting portion cooperating with the guide rail is formed on the frame, a copper slide plate is provided between the connecting portion and the guide rail, and under the drive of the first driving unit, the two shear bodies move toward or away from each other synchronously along the guide rail.

[0022] Preferably, the second drive unit includes a power base and a drive motor, a first coupling, a first reducer and a second coupling which are arranged on the power base and are sequentially transmission-connected, and the output end of the second coupling is connected to the input end of the second transmission unit.

[0023] Preferably, along the power output direction of the second driving unit, the two scissor bodies are respectively a transmission side scissor body and an operating side scissor body, the helical gear on the transmission side scissor body is a right-handed helical gear, and the helical gear on the operating side scissor body is a left-handed helical gear.

[0024] The characteristics and advantages of the present invention are as follows: the trimming disc shears provided by the present invention are provided with a first assembly hole and a second assembly hole whose center lines are parallel to each other on the frame of the shear body, and a third assembly hole whose center line forms an angle equal to the swing angle of the cutter disc of the trimming disc shears with the center line and the center line of the first assembly hole or the second assembly hole, so that after the shear body is coaxially connected to the second transmission unit through a transmission shaft sleeve, the swing angle of the cutter disc of the trimming disc shears is formed between the axial direction of the upper cutter disc assembly and the lower cutter disc assembly and the axial direction of the second transmission unit, and the power transmission of the rotation of the upper and lower cutter discs is realized in conjunction with the spatial gear transmission technology, so that the symmetrically arranged shear bodies on both sides have the required cutter disc swing angles, and the transmission of the shear bodies on both sides is The axes of the bushings overlap, thereby realizing the coaxial arrangement of the transmission parts of the shear bodies on both sides (including the transmission parts of the first transmission unit respectively connected to the shear bodies on both sides and the transmission parts of the second transmission unit respectively connected to the shear bodies on both sides), solving the problem in the traditional disc shear design that the transmission parts of the shear bodies on both sides are not coaxial due to the overall symmetrical swinging of the cutter disc angle, thereby causing vibration during high-speed shearing and seriously affecting the shearing quality; at the same time, the coaxial arrangement of the transmission parts of the shear bodies on both sides is conducive to the detection and assurance of the parallelism between the axis of the first transmission unit, the axis of the second transmission unit, and the moving path of the shear bodies relative to the base during assembly, reducing the workload of equipment replacement and repair and improving the interchangeability of the edge cutting disc shears. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the main structure of the trimming circular shears provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the top view of the trimming disc shears provided in an embodiment of the present invention;

[0028] Figure 3 for Figure 1 AA cross-sectional structural diagram;

[0029] Figure 4 A schematic diagram of the connection between the first transmission unit and the base of the trimming circular shears provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the relationship between the center lines of the assembly holes on the frame of the trimming circular shears provided in an embodiment of the present invention;

[0031] Figure 6A schematic diagram of the centerline relationship of the components of the trimming circular shears provided in an embodiment of the present invention in an assembled state;

[0032] Figure 7 It is a structural schematic diagram of a connecting assembly in an opening degree adjustment device of a trimming circular shear provided in an embodiment of the present invention;

[0033] Figure 8 The diagram is a schematic diagram of the matching connection between the connecting sleeve and the intermediate sleeve in the opening adjustment device of the trimming disc shears provided in the embodiment of the present invention.

[0034] Description of Figure Numbers:

[0035] 1. Base; 11. Guide plate;

[0036] 2. shear body; 21. frame; 211. connection part; 212. copper slide plate; 22. upper cutter disc assembly; 23. lower cutter disc assembly; 24. transmission assembly; 25. first spur gear; 26. second spur gear; 27. helical gear; 28. transmission shaft sleeve; 29. ​​sliding part;

[0037] 3. Opening adjustment device; 31. First driving unit; 311. Opening adjustment motor; 312. Second reducer; 32. First transmission unit; 321. Connecting assembly; 3211. Screw nut; 3212. Intermediate sleeve; 3213. Connecting sleeve; 322. Coupling; 323. Ball screw; 324. Connecting bearing seat; 33. Absolute encoder;

[0038] 4. Power device; 41. Second drive unit; 411. Drive motor; 412. First coupling; 413. First reducer; 414. Second coupling; 42. Second transmission unit; 421. Transmission coupling; 422. Transmission shaft; 423. Transmission bearing seat;

[0039] a, center of tooth width; b, guide surface; α, cutter disc swing angle. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figures 1 to 4 As shown, the present invention provides a cutting disc shear for cutting a continuous strip plate, the movement direction of the continuous strip plate is as follows Figure 1 , Figure 2 and Figure 4As shown by the middle arrow, in this embodiment, the continuous strip plate is mainly an ultra-thin strip steel with a thickness range of 0.1mm to 0.5mm. The trimming circular disc shear comprises a base 1, two shear bodies 2 symmetrically slidably connected to the base 1, an opening adjustment device 3 and a power device 4, wherein the shear body 2 comprises a frame 21 and an upper cutter disc assembly 22, a lower cutter disc assembly 23 and a transmission assembly 24 arranged on the frame 21, a first spur gear 25 is connected to the cutter shaft of the upper cutter disc assembly 22, a second spur gear 26 is connected to the cutter shaft of the lower cutter disc assembly 23, a helical gear 27 is connected to the transmission shaft sleeve 28 of the transmission assembly 24, and the first spur gear 25 is connected to the cutter shaft of the upper cutter disc assembly 22. 25, the second spur gear 26 and the bevel gear 27 are sequentially connected in transmission, the knife shaft axis of the upper cutter disc assembly 22 is arranged parallel to the knife shaft axis of the lower cutter disc assembly 23, the helix angle of the bevel gear 27, the angle between the knife shaft axis of the upper cutter disc assembly 22 and the axis of the transmission sleeve 28 of the transmission assembly 24 are all equal to the knife disc swing angle α of the trimming circular disc shear, the helical gears 27 on the two shear bodies 2 have opposite rotation directions to achieve the symmetrical tilting arrangement of the cutter discs on the shear bodies 2 on both sides; the opening adjustment device 3 includes a transmission connection A first driving unit 31 and a first transmission unit 32, wherein the first transmission unit 32 is installed on the base 1 by connecting the bearing seat 324, and the first transmission unit 32 is connected to the frame 21 of the two shear bodies 2. Under the drive of the first driving unit 31, the first transmission unit 32 can drive the two shear bodies 2 to move toward or away from the base 1 synchronously to control the shearing width of the continuous strip plate to be sheared; a power device 4, comprising a second driving unit 41 and a second transmission unit 42 connected in a transmission manner, wherein the second transmission unit 42 is fixedly installed on the base 1, and the two shear bodies 2 are connected in a transmission manner to the second transmission unit 42 through a transmission sleeve 28 thereon, and a sliding member 29 slidably connected to the second transmission unit 42 is connected in the transmission sleeve 28, so that the shear body 2 can move along the second transmission unit 42 under the drive of the first driving unit 31, and under the drive of the second driving unit 41, the second transmission unit 42 can drive the transmission sleeve 28 to rotate, so that the cutter discs on the two shear bodies 2 rotate synchronously to cut the continuous strip plate to be sheared. In this embodiment, the sliding member 29 connected to the transmission sleeve 28 is a sliding key, and a sliding rail groove matching the sliding key is provided on the second transmission unit 42, so that the shear bodies 2 on both sides can move toward or away from each other along the second transmission unit 42 under the drive of the first driving unit 31 to reduce or increase the opening between the cutter heads on the shear bodies 2 on both sides, thereby controlling the shearing width of the continuous strip plate to be sheared.

[0042] Specifically, Figures 1 to 3 As shown, and see Figure 5As shown, the shear body 2 is slidably connected to the base 1 through the frame 21. Along the gravity direction, the frame 21 is sequentially provided with a first assembly hole, a second assembly hole and a third assembly hole. The center lines of the first assembly hole and the second assembly hole are parallel. The center line of the third assembly hole forms an angle with the center line of the first assembly hole or the second assembly hole, and the angle is equal to the blade swing angle α of the trimming circular disc shear. The upper blade assembly 22, the lower blade assembly 23 and the transmission assembly 24 are coaxially installed in the first assembly hole, the second assembly hole and the third assembly hole through the corresponding bearings, positioning components and locking components respectively assembled, wherein the upper blade assembly 22 includes an upper blade shaft assembly and an upper blade, and the lower blade assembly 23 includes a lower blade shaft assembly and a lower blade. The upper blade and the lower blade are respectively fixed to the front ends of the upper blade shaft assembly and the lower blade shaft assembly (close to one end of the continuous strip plate) by the corresponding positioning parts and locking nuts respectively assembled, so as to realize the shearing operation of the continuous strip plate through the rotation of the upper blade and the lower blade. The rear end of the upper cutter shaft assembly is connected to the first spur gear 25 for transmission, the rear end of the lower cutter shaft assembly is connected to the second spur gear 26 for transmission, the rear end of the transmission sleeve 28 is connected to the helical gear 27 with a helical angle equal to the cutter disc swing angle α for transmission, the transmission sleeve 28 is transmission-connected to the second transmission unit 42, the helical gear 27 is transmission-connected to the transmission sleeve 28 through a key, the first spur gear 25, the second spur gear 26 and the helical gear 27 are transmission-connected in sequence to realize the power transmission of the upper cutter disc and the lower cutter disc rotation. In this way, in conjunction with reference to Figure 6 As shown, when the shear body 2 is coaxially connected to the second transmission unit 42 through the transmission shaft sleeve 28, the axial direction of the upper cutter disc assembly 22 and the lower cutter disc assembly 23 and the axial direction of the second transmission unit 42 form the cutter disc swing angle α of the trimming circular disc shear.

[0043] The present invention provides a first assembly hole and a second assembly hole whose center lines are parallel on the frame 21 of the shear body 2, and a third assembly hole whose center line forms an angle equal to the cutter disc swing angle α of the trimming disc shears between the center line and the center line of the first assembly hole or the second assembly hole, so that after the shear body 2 is coaxially connected to the second transmission unit 42 through the transmission shaft sleeve 28, the cutter disc swing angle α of the trimming disc shears is formed between the axial direction of the upper cutter disc assembly 22 and the lower cutter disc assembly 23 and the axial direction of the second transmission unit 42, and the spatial gear transmission technology is used to realize the power transmission of the rotation of the upper and lower cutter discs, so that the symmetrically arranged shear bodies 2 on both sides have the required cutter disc swing angle α, and the axes of the transmission shaft sleeves 28 of the shear bodies 2 on both sides are coincident. The transmission parts of the shear bodies 2 on both sides (including the transmission parts of the first transmission unit 32 respectively connected to the shear bodies 2 on both sides and the transmission parts of the second transmission unit 42 respectively connected to the shear bodies 2 on both sides) are coaxially arranged, which solves the problem that the transmission parts of the shear bodies 2 on both sides are not coaxial due to the overall symmetrical swing of the cutter disc angle α of the shear bodies 2 on both sides in the traditional disc shear design, thereby causing vibration during high-speed shearing and seriously affecting the shearing quality; at the same time, the coaxial arrangement of the transmission parts of the shear bodies 2 on both sides is conducive to the detection and assurance of the parallelism between the axis of the first transmission unit 32, the axis of the second transmission unit 42, and the moving path of the shear body 2 relative to the base 1 during assembly, thereby reducing the workload of equipment replacement and repair and improving the interchangeability of the edge cutting disc shears.

[0044] In order to ensure the machining accuracy of the first assembly hole, the second assembly hole and the third assembly hole on the frame 21 and the swing angle accuracy between the tool shaft assembly and the axis direction of the second transmission unit 42, a multi-axis precision machining machine is preferably used to process the assembly holes on the frame 21. The relative position relationship is as follows: Figure 5 As shown, the processing route of each assembly hole is: firstly, the parallel first assembly hole and the second assembly hole are processed, and then the frame 21 of the shear body 2 on both sides is symmetrically swung by a cutter head swing angle α at the center of the tooth width a of the bevel gear 27 assembled with the transmission sleeve 28, and then the third assembly hole is processed.

[0045] According to a preferred embodiment of the present invention, Figure 1 and Figure 2 As shown, along the power output direction of the second drive unit 41, the two scissor bodies 2 are respectively a transmission side scissor body 2 and an operating side scissor body 2, the bevel gear 27 on the transmission side scissor body 2 is a right-handed bevel gear 27, and the bevel gear 27 on the operating side scissor body 2 is a left-handed bevel gear 27. Specifically, the rotation direction of the bevel gears 27 on the scissor bodies 2 on both sides is consistent with the swing angle direction of the corresponding third assembly holes, so that the scissor bodies 2 on both sides can move toward or away from each other along the second transmission unit 42 under the drive of the first drive unit 31, so as to adjust the opening degree between the cutter heads on the scissor bodies 2 on both sides.

[0046] According to a preferred embodiment of the present invention, the second drive unit 41 includes a power base 1 and a drive motor 411, a first coupling 412, a first reducer 413 and a second coupling 414 which are arranged on the power base 1 and are sequentially connected in transmission, and the output end of the second coupling 414 is connected to the input end of the second transmission unit 42. Specifically, as Figure 1 As shown, the first reducer 413 realizes the connection between its input shaft and the drive motor 411 through the first coupling 412, and realizes the connection between its output end and the second transmission unit 42 through the second coupling 414. By providing the power base 1, the output axis of the drive motor 411, the first coupling 412, the first reducer 413 and the second coupling 414 installed on the power base 1 and connected in sequence are aligned with the axis of the second transmission unit 42, which is convenient for saving the layout space and quick assembly of the second drive unit 41. The second coupling 414 is connected to the input end of the second transmission unit 42 to transmit power to the second transmission unit 42.

[0047] According to a preferred embodiment of the present invention, the second transmission unit 42 includes a transmission coupling 421 and two transmission shafts 422 (i.e., transmission members of the second transmission unit 42 connected to the scissor bodies 2 on both sides respectively), the two transmission shafts 422 are coaxially connected through the transmission coupling 421 and are installed on the base 1 through a transmission bearing seat 423, the output end of the second drive unit 41 is connected to the input end of one of the transmission shafts 422, and the two transmission shafts 422 are correspondingly connected to the transmission sleeves 28 on the two scissor bodies 2. Specifically, as Figure 1 As shown, two transmission shafts 422 are coaxially arranged and connected through a transmission coupling 421. Each transmission shaft 422 is provided with a slide rail groove extending along the axial direction. The transmission shaft 422 realizes sliding connection with the corresponding shear body 2 through the cooperation of the slide rail groove and the sliding key on the transmission sleeve 28. Among them, the transmission shaft 422 connected to the output end of the second drive unit 41 cooperates with the transmission sleeve 28 of the transmission side shear body 2 and transmits power, and the other transmission shaft 422 cooperates with the transmission sleeve 28 of the operating side shear body 2 and transmits power. Under the power output of the driving motor 411, the transmission sleeves 28 of the shear bodies 2 on both sides rotate with the transmission shaft 422, and successively drive the helical gear 27, the second spur gear 26 and the first spur gear 25 connected thereto to rotate, thereby driving the upper and lower cutter discs on the shear bodies 2 on both sides to rotate synchronously, so as to realize the trimming operation of the continuous strip plate. There is a suitable matching gap between the transmission shaft 422 and the transmission sleeve 28 so that the transmission sleeve 28 can smoothly reciprocate along the axial direction of the transmission shaft 422 for a certain distance.

[0048] According to a preferred embodiment of the present invention, a guide rail is provided on the base 1, a connecting portion 211 matching the guide rail is formed on the frame 21, a copper slide plate 212 is provided between the connecting portion 211 and the guide rail, and under the drive of the first driving unit 31, the two shear bodies 2 move synchronously toward or away from each other along the guide rail. Specifically, Figures 1 to 3 As shown, there are two guide rails arranged side by side at intervals along the axial direction of the transmission shaft 422, which are used to connect the transmission side shear body 2 and the operation side shear body 2 respectively. Along the movement direction of the continuous strip plate, the base 1 is symmetrically installed with inverted L-shaped guide pressure plates 11 on both sides, and the surfaces of the guide pressure plates 11 on both sides form guide surfaces b. A guide rail with a track groove structure is formed between the guide pressure plates 11 on both sides and the base 1. The guide rail is used to guide the shear body 2 when adjusting the opening degree, and can play a role in stabilizing the positioning of the shear body 2 during high-speed trimming. A connecting portion 211 that matches the guide rail is formed on the frame 21 of the shear bodies 2 on both sides. The shear bodies 2 on both sides are slidably connected to the corresponding guide rails of the base 1 through the connecting portion 211, so that the shear bodies 2 on both sides can move toward or away from each other synchronously along the guide rails relative to the base 1 under the drive of the first driving unit 31, so as to achieve the adjustment of the opening degree between the cutter heads on the shear bodies 2 on both sides. In order to extend the service life of the guide rail and improve the interchangeability of the trimming disc shears, a copper slide plate 212 is connected to the surface of the connecting portion 211 of the frame 21 that matches the guide rail. Of course, the copper slide plate 212 can also be connected to the surface of the connecting portion 211 of the frame 21 that matches the guide rail, and this application does not limit this. Similarly, the guide rail is not limited to the rail groove structure provided in this embodiment.

[0049] In order to ensure the parallelism between the axis of the transmission shaft 422 and the reference surface of the copper slide plate 212, when the third assembly hole on the frame 21 is processed by a multi-axis precision machining machine, the surface of the connection part 211 for mounting the copper slide plate 212 is processed to form a processing surface. The sliding surface of the guide plate 11 is ground by a surface grinder to obtain a higher surface accuracy.

[0050] According to a preferred embodiment of the present invention, Figure 1As shown, the first transmission unit 32 includes a connecting assembly 321, a coupling 322 and two ball screws 323 (i.e., the transmission parts of the first transmission unit 32 connected to the scissor bodies 2 on both sides respectively), the two ball screws are coaxially connected through the coupling 322 and are installed on the base 1 through the connecting bearing seat 324, the output end of the first drive unit 31 is connected to the input end of one of the ball screws, the two ball screws are connected with a connecting assembly 321, and the two ball screws are correspondingly connected to the racks 21 of the two scissor bodies 2 through the connecting assembly 321 thereon. Among them, the thread rotation directions of the two ball screws are opposite, so that the correspondingly connected connecting assembly 321 can move toward or away from the ball screw along the axial direction thereof under the drive of the first drive unit 31, thereby realizing the scissor bodies 2 on both sides approaching or moving away from each other, and achieving the purpose of adjusting the opening between the cutter heads on the scissor bodies 2 on both sides. In this embodiment, the first driving unit 31 includes an opening adjustment motor 311 and a second reducer 312 , the ball screw 323 connected to the transmission side shear body 2 is connected to the output shaft of the second reducer 312 , and the input shaft of the second reducer 312 is connected to the opening adjustment motor 311 .

[0051] According to a preferred embodiment of the present invention, the opening adjustment device 3 further includes an absolute value encoder 33 for calculating the distance between the two scissor bodies 2 moving toward or away from each other. The absolute value encoder 33 is electrically connected to the first drive unit 31. When the distance calculated by the absolute value encoder 33 meets the distance requirement between the shearing surfaces of the two scissor bodies 2, the absolute value encoder 33 sends a stop signal to the first drive unit 31. Specifically, Figure 1 As shown, the absolute encoder 33 is installed on the ball screw connected to the operating side shear body 2. The absolute encoder 33 is used to memorize the number of rotations of the ball screw. The change in the opening between the cutter heads on the shear bodies 2 on both sides (i.e., the sum of the axial movement distances of the screw nuts 3211 on the two ball screws) is twice the product of the number of rotations of the ball screw and its screw lead.

[0052] According to a preferred embodiment of the present invention, Figure 7As shown, the connecting assembly 321 includes a lead screw nut 3211, an intermediate sleeve 3212 and a connecting sleeve 3213. The lead screw nut is threadedly connected to the ball screw 323. The intermediate sleeve 3212 is sleeved on the lead screw nut. The intermediate sleeve 3212 and the connecting sleeve 3213 form a clearance fit. The connecting sleeve 3213 is connected to the frame 21. When it is necessary to adjust the opening between the cutter heads on the shear bodies 2 on both sides, the opening adjustment motor 311 drives the two ball screws to rotate synchronously after being decelerated by the second reducer 312. The two lead screw nuts 3211 drive the connecting sleeve 3213 through the intermediate sleeve 3212 to drive the shear bodies 2 on both sides to move toward or away from the base 1 along the guide rail, and the adjustment value is calculated by the absolute value encoder 33. When the required opening is reached, the absolute value encoder 33 sends a stop signal to the opening adjustment motor 311, and the opening adjustment motor 311 receives the stop signal and stops. Among them, both ends of the ball screw are fixedly installed on the base 1 through bearing seats, the screw nut 3211 and the intermediate sleeve 3212 are fixedly connected by bolts, a clearance fit is formed between the intermediate sleeve 3212 and the connection, and the connecting sleeve 3213 and the frame 21 of the shear body 2 are fixedly connected by keys and bolts.

[0053] According to a preferred embodiment of the present invention, Figure 8 As shown, the connecting sleeve 3213 is provided with a receiving cavity for receiving the intermediate sleeve 3212, and a first preset gap is reserved between the intermediate sleeve 3212 and the connecting sleeve 3213 along the direction of gravity, and the middle parts of both sides of the intermediate sleeve 3212 extend outwards to form fins along the direction of movement of the continuous strip plate to be sheared, and a second preset gap is reserved between the fins and the connecting sleeve 3213 along the axial direction of the ball screw 323, and the first preset gap is larger than the second preset gap. In this way, by reserving the first preset gap between the intermediate sleeve 3212 and the connecting sleeve 3213 in the direction of gravity and the second preset gap in the axial direction of the ball screw 323, a safety margin is reserved to avoid the problem of the ball screw being blocked and damaged when the parallelism between the ball screw axis and the transmission shaft 422 axis is poor, thereby extending the service life of the trimming disc shear.

[0054] According to a preferred embodiment of the present invention, the first preset gap is 10 mm to 20 mm, and the second preset gap is 0.02 mm to 0.05 mm. In this way, by setting a suitable safety margin, the problem of the ball screw being blocked and damaged when the parallelism between the ball screw axis and the transmission shaft 422 axis is poor can be avoided, and at the same time, the idle stroke during the reversing rotation of the ball screw driven by the opening adjustment motor 311 can be avoided to be too large, so as to ensure that the opening between the cutter disc sections on the two sides of the shear body 2 can be quickly adjusted to the right position.

[0055] It should be noted that, since the transmission shafts 422 of the scissor bodies 2 on both sides are coaxially arranged, and the ball screws of the scissor bodies 2 on both sides are also coaxially arranged, therefore, during assembly, it is only necessary to set up a dial indicator at the end of one of the transmission shafts 422 or the ball screw, and then measure the coaxiality of the other transmission shaft 422 or the ball screw, and adjust it to the required value as needed to achieve the coaxial assembly of the two transmission shafts 422 or the two ball screws. As for the parallelism adjustment between the transmission shaft sleeve 28 and the ball screw, it is only necessary to adjust the two to be perpendicular to a common reference to ensure the parallelism between the transmission shaft sleeve 28 and the ball screw.

[0056] Based on the above description, the trimming disc shears provided by the embodiment of the present invention have the following beneficial effects:

[0057] The trimming disc shears provided by the embodiment of the present invention are provided with a first assembly hole and a second assembly hole whose center lines are parallel to each other on the frame 21 of the shear body 2, and a third assembly hole whose center line forms an angle equal to the cutter disc swing angle α of the trimming disc shears between the center line and the center line of the first assembly hole or the second assembly hole, so that after the shear body 2 is coaxially connected to the second transmission unit 42 through the transmission shaft sleeve 28, the cutter disc swing angle α of the trimming disc shears is formed between the axial direction of the upper cutter disc assembly 22 and the lower cutter disc assembly 23 and the axial direction of the second transmission unit 42, and the spatial gear transmission technology is used to realize the power transmission of the rotation of the upper and lower cutter discs, so that the symmetrically arranged shear bodies 2 on both sides have the required cutter disc swing angle α, and the axes of the transmission shaft sleeves 28 of the shear bodies 2 on both sides are coincident, thereby realizing the coaxial arrangement of the transmission parts of the shear bodies 2 on both sides (including the transmission parts respectively connected to the shear bodies 2 on both sides by the first transmission unit 32 and the transmission parts respectively connected to the shear bodies 2 on both sides by the second transmission unit 42), thereby solving the problem of the trimming disc shears being coaxially arranged. The invention solves the problem that the transmission parts of the shear bodies 2 on both sides are not coaxial due to the overall symmetrical swing of the cutter disc angle α in the traditional disc shear design, thereby causing vibration during high-speed shearing and seriously affecting the shearing quality; at the same time, the coaxial arrangement of the transmission parts of the shear bodies 2 on both sides is conducive to the detection and guarantee of the parallelism between the axis of the first transmission unit 32, the axis of the second transmission unit 42, and the moving path of the shear body 2 relative to the base 1 during assembly, reducing the workload of equipment replacement and repair, and improving the interchangeability of the edge cutting disc shear; and by setting an absolute value encoder 33, accurate control of the opening adjustment between the cutter disc sections on the shear bodies 2 on both sides is achieved; in addition, a first preset gap is reserved between the intermediate sleeve 3212 and the connecting sleeve 3213 in the direction of gravity, and a second preset gap is reserved in the axial direction of the ball screw 323 to leave a safety margin, so as to avoid the problem of the ball screw being blocked and damaged when the parallelism between the ball screw axis and the transmission shaft 422 axis is poor, thereby extending the service life of the edge cutting disc shear.

[0058] The above are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A trimming disc shear, which is used for shearing continuous strip plates, characterized in that: include: Base; The two shear bodies are symmetrically and slidably connected to the base, and the shear bodies include a frame and an upper cutter disc assembly, a lower cutter disc assembly, and a transmission assembly arranged on the frame. The cutter shaft of the upper cutter disc assembly is connected with a first spur gear, the cutter shaft of the lower cutter disc assembly is connected with a second spur gear, and the transmission sleeve of the transmission assembly is connected with a helical gear. The first spur gear, the second spur gear and the helical gear are sequentially connected in transmission. The cutter shaft axis of the upper cutter disc assembly is arranged parallel to the cutter shaft axis of the lower cutter disc assembly. The helix angle of the helical gear and the angle between the cutter shaft axis of the upper cutter disc assembly and the transmission sleeve axis of the transmission assembly are all equal to the cutter disc swing angle of the trimming circular disc shears. The rotation directions of the helical gears on the two shear bodies are opposite. The opening degree adjustment device comprises a first driving unit and a first transmission unit which are connected in a transmission manner, wherein the first transmission unit is installed on the base by connecting a bearing seat, and the first transmission unit is connected to the frames of the two shear bodies. Under the drive of the first driving unit, the first transmission unit can drive the two shear bodies to move toward or away from each other synchronously relative to the base to control the shearing width of the continuous strip plate to be sheared; The power device includes a second drive unit and a second transmission unit which are transmission-connected. The second transmission unit is fixedly mounted on the base. The two shear bodies are transmission-connected to the second transmission unit via the transmission sleeve thereon. A sliding member which is slidably connected to the second transmission unit is connected inside the transmission sleeve, so that the shear bodies can move along the second transmission unit when driven by the first drive unit. When driven by the second drive unit, the second transmission unit can drive the transmission sleeve to rotate, so that the cutter discs on the two shear bodies rotate synchronously to trim the continuous strip plate to be sheared.

2. The trimming disc shears according to claim 1, characterized in that: The second transmission unit includes a transmission coupling and two transmission shafts. The two transmission shafts are coaxially connected through the transmission coupling and installed on the base through a transmission bearing seat. The output end of the second drive unit is connected to the input end of one of the transmission shafts, and the two transmission shafts are correspondingly connected to the transmission sleeves on the two scissor bodies.

3. The trimming circular shears according to claim 1 or 2, characterized in that: The first transmission unit includes a connecting component, a coupling and two ball screws. The two ball screws are coaxially connected through a coupling and are installed on the base through the connecting bearing seat. The output end of the first drive unit is connected to the input end of one of the ball screws. The two ball screws are connected to the connecting component, and the two ball screws are connected to the frames of the two shear bodies through the connecting component thereon.

4. The trimming disc shears according to claim 3, characterized in that: The connecting assembly includes a lead screw nut, an intermediate sleeve and a connecting sleeve. The lead screw nut is threadedly connected to the ball screw, the intermediate sleeve is sleeved on the lead screw nut, the intermediate sleeve and the connecting sleeve form a clearance fit, and the connecting sleeve is connected to the frame.

5. The trimming disc shears according to claim 4, characterized in that: The connecting sleeve is provided with an accommodating cavity for accommodating the intermediate sleeve. Along the direction of gravity, a first preset gap is left between the intermediate sleeve and the connecting sleeve. Along the movement direction of the continuous strip plate to be sheared, the middle parts of both sides of the intermediate sleeve extend outward to form fin plates. Along the axial direction of the ball screw, a second preset gap is left between the fin plates and the connecting sleeve. The first preset gap is larger than the second preset gap.

6. The edge trimming disc shears according to claim 5, characterized in that: The first preset gap is 10 mm to 20 mm, and the second preset gap is 0.02 mm to 0.05 mm.

7. The trimming disc shears according to claim 1, characterized in that: The opening adjustment device also includes an absolute value encoder for calculating the distance between the two scissors moving toward or away from each other. The absolute value encoder is electrically connected to the first drive unit. When the distance calculated by the absolute value encoder meets the distance requirement between the shearing surfaces of the two shears, the absolute value encoder sends a stop signal to the first drive unit.

8. The trimming disc shears according to claim 1, characterized in that: A guide rail is provided on the base, a connecting portion matched with the guide rail is formed on the frame, a copper slide plate is provided between the connecting portion and the guide rail, and under the drive of the first driving unit, the two shear bodies move toward or away from each other synchronously along the guide rail.

9. The trimming disc shears according to claim 1, characterized in that: The second drive unit includes a power base and a drive motor, a first coupling, a first reducer and a second coupling which are arranged on the power base and are sequentially connected in transmission. The output end of the second coupling is connected to the input end of the second transmission unit.

10. The trimming disc shears according to claim 1, characterized in that: Along the power output direction of the second driving unit, the two scissor bodies are respectively a transmission side scissor body and an operating side scissor body, the helical gear on the transmission side scissor body is a right-handed helical gear, and the helical gear on the operating side scissor body is a left-handed helical gear.

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