Cutting machine and aerated concrete production line

Abstract

The application relates to the technical field of aerated concrete slab production, and discloses a cutting machine and an aerated concrete production line. The cutting machine comprises a support frame, a plurality of rotary tool holders rotatably arranged on the two sides of the support frame, each rotary tool holder having a cutting position and a tool withdrawal position, a plurality of first driving members, each first driving member being connected with at least two rotary tool holders, and each first driving member driving the at least two rotary tool holders to rotate, so as to change the tools or switch the corresponding rotary tool holder between the cutting position and the tool withdrawal position. At least two rotary tool holders share one driving member, the number of driving members is reduced, and the use and maintenance costs are reduced.

Description

Technical Field

[0001] This invention relates to the field of aerated concrete panel production technology, specifically to a cutting machine and an aerated concrete production line. Background Technology

[0002] Due to the connection requirements of aerated concrete panels, both sides of the finished panels need to be designed with mortise and tenon joints. Therefore, the sides need to be cut while the panels are still in the unfinished state. Aerated concrete panels come in various specifications, each with a different thickness. Therefore, the spacing of the mortise and tenon joints will change during the manufacturing process of each specification of panel. This requires adjusting the cutting edges of several panels on the unfinished panel cutting machine to the corresponding specifications when manufacturing aerated concrete panels of different specifications.

[0003] In the existing technology, the cutting machine includes several rotating blade holders, each of which is equipped with several sets of plate blades. Each rotating blade holder is driven by a motor, thereby realizing automatic blade changing of different specifications of plate blades. One motor controls one rotating blade holder, resulting in a large number of motors and high usage and maintenance costs. Summary of the Invention

[0004] In view of this, the present invention provides a cutting machine and an aerated concrete production line to solve the problem of high use and maintenance costs caused by a single motor controlling a single rotating cutter head.

[0005] In a first aspect, the present invention provides a cutting machine, comprising: a support frame; a plurality of rotating blade holders rotatably disposed on both sides of the support frame, each rotating blade holder having a cutting position and a retracting position; a plurality of first driving members, each first driving member being connected to at least two rotating blade holders, each first driving member driving at least two rotating blade holders to rotate, so as to change blades or to switch the corresponding rotating blade holder between the cutting position and the retracting position.

[0006] Beneficial effects: Each first drive unit drives at least two corresponding rotary tool holders to rotate, which can realize automatic tool changing and positioning of the rotary tool holders in the cutting and retraction positions. At least two rotary tool holders share one drive unit, reducing the number of drive units and reducing usage and maintenance costs.

[0007] In one alternative embodiment, the driving end of the first driving member is movably disposed, and the cutting machine further includes several transmission mechanisms, wherein the driving end of each first driving member cooperates with the corresponding rotating blade holder through the transmission mechanism.

[0008] Beneficial effects: By converting the linear motion of the drive end of the first drive member into rotational motion through the transmission mechanism, at least two rotating tool holders can be driven to rotate synchronously, thus ensuring the synchronicity of the corresponding rotating tool holders.

[0009] In one optional embodiment, the cutting machine further includes several limiting components, which are arranged one-to-one with several first driving members. Each limiting component includes several limiting mechanisms, and each first driving member has a limiting member on its driving end. In each limiting component, the several limiting mechanisms are arranged along the moving direction of the driving end of the corresponding first driving member. When one of any two adjacent limiting mechanisms cooperates with the limiting member, the rotating blade holder is in the cutting position. When the other of any two adjacent limiting mechanisms cooperates with the limiting member, the rotating blade holder is in the retracting position.

[0010] Beneficial effects: By limiting the corresponding restricted parts through several limiting mechanisms of the limiting component, the rotary tool holder can be accurately positioned in the cutting position and the retraction position, thereby improving the positioning accuracy and cutting accuracy.

[0011] In one optional embodiment, each limiting mechanism includes a limiting member and a second driving member. The second driving member is fixedly disposed relative to the support frame. The driving end of the second driving member is connected to the limiting member. The limiting member has a limiting position that limits the limiting member and an avoidance position that avoids the limiting member. The second driving member drives the limiting member to switch between the limiting position and the avoidance position.

[0012] Beneficial effects: Each rotary tool holder is equipped with multiple sets of plate cutters, and each set of plate cutters uses a different limiting mechanism. When using a limiting mechanism, the corresponding limiting member is driven to move to the limiting position by the second driving member, thereby limiting the restricted member; when the limiting mechanism is not used, the corresponding limiting member is driven to move to the avoidance position by the second driving member, so as to avoid interference between the unused limiting mechanism and the restricted member.

[0013] In one alternative embodiment, the limiting member has an opening to avoid the piston rod of the first driving member, and the piston rod retracts when the rotating tool holder switches from the cutting position to the retracting position.

[0014] Beneficial effects: When the rotary tool holder switches from the cutting position to the retraction position, the limiting component is first driven to move to the limiting position, and then the piston rod is driven to retract. When the piston rod retracts to contact the limiting component, it indicates that the rotary tool holder has moved into position. The setting of the clearance opening can avoid interference between the limiting component corresponding to the retraction position and the piston rod when it extends.

[0015] In one optional embodiment, the limiting member is provided with a movable first limiting adjustment member and a movable second limiting adjustment member. When the end of the first limiting adjustment member facing the cylinder of the first driving member cooperates with the corresponding limiting member, the rotary tool holder is in the cutting position. When the end of the second limiting adjustment member away from the cylinder of the first driving member cooperates with the corresponding limiting member, the rotary tool holder is in the retracting position.

[0016] Beneficial effect: The cutting angle of the plate cutter can be finely adjusted by adjusting the position of the first limit adjustment component and the second limit adjustment component on the limit component.

[0017] In one optional implementation, each limiting component further includes a plurality of positioning structures that correspond one-to-one with the plurality of limiting mechanisms, and the limiting component is provided with a mating structure that cooperates with the corresponding positioning structure.

[0018] Beneficial effects: The positioning structure positions the limiting component, preventing instability caused by the cantilevered state when the limiting component extends, thus improving the limiting reliability of the limiting component.

[0019] In one alternative embodiment, a plurality of rotating blade holders are arranged in pairs, with two rotating blade holders in each pair positioned opposite each other on both sides of the support frame. Each drive unit is connected to a pair of rotating blade holders. The cutting machine also includes a plurality of support beams that span the support frame, with each first drive unit fixed to one support beam.

[0020] Beneficial effect: The drive components are supported by support beams, resulting in more stable support.

[0021] In one optional embodiment, the transmission mechanism is a gear and rack mechanism, which includes meshing gears and racks. The driving end of each first driving member is connected to two racks corresponding to a pair of rotating tool holders. The two racks corresponding to a pair of rotating tool holders are arranged on opposite sides of the support beam, and a gear is fixed on each rotating tool holder.

[0022] Beneficial effects: The movement of the drive end of the first drive component drives the two racks to move, which in turn drives the two gears and two rotating columns to rotate, achieving synchronous rotation of the two rotating tool holders. The two racks corresponding to a pair of rotating tool holders are staggered on the support beam. The two rotating tool holders rotate in opposite directions when advancing or retracting, which ensures that when retracting, the plate cutters on both sides of the rotating tool holders on the support beam retract towards the tail of the blank, thus preventing damage to the already cut blank. Furthermore, when cutting, the forward movement of the blank applies a rotational force to the gears, which in turn applies a force to the racks and the piston rod of the drive cylinder. This force is in the same direction as the extension of the piston rod, causing the piston rod to be subjected to a tensile force. The staggered arrangement of the two racks ensures that the piston rod of the cylinder is not subjected to a compressive force during cutting, but rather a tensile force. The tensile force on the piston rod is precisely engaged with the mechanical limit formed by the first limit bolt, thus ensuring the reliability of the limit.

[0023] Secondly, the present invention also provides an aerated concrete production line, comprising: the aforementioned cutting machine. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a perspective view of a cutting machine according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A three-dimensional view of the rotating tool holder and gears shown;

[0027] Figure 3 for Figure 1 A partial 3D view of the drive limit module shown;

[0028] Figure 4 for Figure 1 A partial schematic diagram of the drive limit module shown;

[0029] Figure 5 for Figure 4 An enlarged schematic diagram showing the location of the limit block in the drive limit module;

[0030] Figure 6 for Figure 4 A three-dimensional view of the limiting block shown;

[0031] Figure 7 for Figure 4 A perspective view of the locating pin and the locating mounting plate shown;

[0032] Figure 8 for Figure 1 The top view shown is of the rotary cutter head in the cutting position and in contact with the blank.

[0033] Figure 9 for Figure 1 The diagram shows a top view of the rotary tool holder in the retracted position, in conjunction with the blank.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Supporting framework;

[0036] 2. Rotary tool holder; 201. Rotary column; 202. Sheet metal cutter; 203. Bearing with mounting bracket;

[0037] 3. Drive limit module; 301. First drive component; 302. Gear and rack mechanism; 3021. Gear; 3022. Rack; 304. Limiting component; 3041. Clearance opening; 305. Second drive component; 306. First limit adjustment component; 307. Second limit adjustment component; 308. Positioning structure; 309. Positioning mounting component; 310. Support beam; 311. Moving plate; 312. Limiting component; 313. Limiting mounting component; 314. Fixed mounting plate; 315. Guide mechanism;

[0038] 5. Green body. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.

[0041] According to an embodiment of the present invention, a cutting machine is provided, comprising: a support frame 1, a plurality of rotating blade holders 2, and a plurality of first driving members 301. The plurality of rotating blade holders 2 are rotatably disposed on both sides of the support frame 1, each rotating blade holder 2 having a cutting position and a blade retraction position; each first driving member 301 is connected to at least two rotating blade holders 2, and each first driving member 301 drives at least two rotating blade holders 2 to rotate, so as to change blades or switch the corresponding rotating blade holder 2 between the cutting position and the blade retraction position. The rotating blade holder 2 includes a rotating column 201 and a plurality of sets of plate blades 202, the plurality of sets of plate blades 202 being arranged along the circumferential direction of the rotating column 201, and the plurality of plate blades 202 in each set being arranged along the axial direction of the rotating column 201.

[0042] In the cutting machine of this embodiment, each first driving component 301 drives at least two corresponding rotating tool holders 2 to rotate, which can realize automatic tool changing and positioning of the rotating tool holder 2 in the cutting position and the tool retraction position. At least two rotating tool holders 2 share one driving component, reducing the number of driving components and reducing the cost of use and maintenance.

[0043] In one embodiment, such as Figure 2 and Figure 3As shown, the driving end of the first driving member 301 is movably configured. The cutting machine also includes several transmission mechanisms, and the driving end of each first driving member 301 cooperates with the corresponding rotating blade holder 2 through the transmission mechanism. By converting the linear motion of the driving end of the first driving member 301 into rotational motion through the transmission mechanism, at least two rotating blade holders 2 can be driven to rotate synchronously, thus ensuring the synchronicity of the corresponding rotating blade holders 2.

[0044] Furthermore, the first driving component 301 is preferably a cylinder; it can be understood that the first driving component 301 can also be a hydraulic cylinder, etc.

[0045] In another embodiment, the driving end of the first driving member 301 is rotatably arranged. For example, the first driving member 301 is a motor, and the output shaft of each motor is connected to a rotating tool holder 2. The output shaft of each motor is connected to at least one rotating tool holder 2 through a transmission mechanism. The transmission mechanism can be a chain drive mechanism, a belt drive mechanism, etc.

[0046] In one embodiment, such as Figures 3 to 7 As shown, the cutting machine also includes several limiting components, each corresponding to a number of first driving members 301. Each limiting component includes several limiting mechanisms, and each first driving member 301 has a limiting member 312 on its driving end. In each limiting component, the limiting mechanisms are arranged along the moving direction of the corresponding first driving member 301's driving end. When one of any two adjacent limiting mechanisms engages with the limiting member 312, the rotating tool holder 2 is in the cutting position; when the other of any two adjacent limiting mechanisms engages with the limiting member 312, the rotating tool holder 2 is in the retraction position. By limiting the corresponding limiting member 312 through the limiting mechanisms of the limiting components, the rotating tool holder 2 is accurately positioned in the cutting and retraction positions, improving positioning and cutting accuracy.

[0047] In one embodiment, such as Figure 4 As shown, each limiting mechanism includes a limiting member 304 and a second driving member 305. The second driving member 305 is fixedly disposed relative to the support frame 1. The driving end of the second driving member 305 is connected to the limiting member 304. The limiting member 304 has a limiting position that limits the limiting member 312, and also a clearance position that avoids the limiting member 312. The second driving member 305 drives the limiting member 304 to switch between the limiting position and the clearance position. Each rotating tool holder 2 is provided with multiple sets of plate cutters 202. Each set of plate cutters 202 uses a different limiting mechanism. When a limiting mechanism is used, the second driving member 305 drives the corresponding limiting member 304 to move to the limiting position, thereby limiting the limiting member 312. When the limiting mechanism is not used, the second driving member 305 drives the corresponding limiting member 304 to move to the clearance position to avoid interference between the unused limiting mechanism and the limiting member 312.

[0048] Furthermore, the limiting member 304 is a limiting block, and the second driving member 305 is preferably a cylinder, but the second driving member 305 can also be a hydraulic cylinder, etc. In order to distinguish between the cylinder of the limiting mechanism and the cylinder that drives the rotating tool holder 2 to rotate, the cylinder of the limiting mechanism can be called a limiting cylinder, and the cylinder that drives the rotating tool holder 2 to rotate is called a driving cylinder.

[0049] In one embodiment, such as Figure 6 As shown, the limiting member 304 has a clearance opening 3041 to avoid the piston rod of the first driving member 301. When the rotating tool holder 2 switches from the cutting position to the retraction position, the piston rod retracts. When the rotating tool holder 2 switches from the cutting position to the retraction position, the limiting member 304 is first driven to move to the limiting position, and then the piston rod is driven to retract. When the piston rod retracts to contact the limiting member 304, it indicates that the rotating tool holder 2 has moved into position. The clearance opening 3041 can prevent interference between the limiting member 304 corresponding to the retraction position and the piston rod when the limiting member 304 extends.

[0050] In another embodiment, the limiting member 304 does not have an avoidance opening 3041. When the rotating tool holder 2 switches from the cutting position to the retraction position, the piston rod retracts. By controlling the distance of the extension of the limiting member 304 corresponding to the retraction position, interference between the piston rod and the limiting member 304 is avoided.

[0051] In another embodiment, the limiting member 304 does not have an avoidance opening 3041, and the piston rod extends when the rotating tool holder 2 switches from the cutting position to the retraction position.

[0052] In one embodiment, such as Figure 5 As shown, the limiting member 304 is provided with a movable first limiting adjustment member 306 and a movable second limiting adjustment member 307. When the end of the first limiting adjustment member 306 facing the cylinder of the first driving member 301 is engaged with the corresponding limiting member 312, the rotating tool holder 2 is in the cutting position. When the end of the second limiting adjustment member 307 away from the cylinder of the first driving member 301 is engaged with the corresponding limiting member 312, the rotating tool holder 2 is in the retracting position. The cutting angle of the plate cutter can be finely adjusted by adjusting the positions of the first limiting adjustment member 306 and the second limiting adjustment member 307 on the limiting member 304.

[0053] Furthermore, the first limiting adjustment component 306 is a first limiting bolt, and the second limiting adjustment component 307 is a second limiting bolt. These bolts are convenient to use and have low cost. Preferably, there are two first limiting bolts and two second limiting bolts.

[0054] Specifically, the end of the first limiting bolt is adapted to cooperate with the limiting member 312, and the head of the second limiting bolt is adapted to cooperate with the limiting member 312. At this time, the first limiting bolt and the second limiting bolt are installed in the same direction, and the heads of the first limiting bolt and the second limiting bolt are set away from the cylinder of the first driving member 301 relative to the bolt, that is, the ends of the bolts of the first limiting bolt and the second limiting bolt are set close to the cylinder of the first driving member 301 relative to the head.

[0055] It is understood that in another embodiment, the end of the screw of the first limiting bolt is adapted to cooperate with the limiting member 312, and the end of the screw of the second limiting bolt is adapted to cooperate with the limiting member 312. In this case, the installation directions of the first limiting bolt and the second limiting bolt are opposite. The head of the first limiting bolt is disposed away from the cylinder of the first driving member 301 relative to the screw, and the head of the second limiting bolt is disposed close to the cylinder of the first driving member 301 relative to the screw.

[0056] In one embodiment, such as Figure 7 As shown, each limiting component also includes several positioning structures 308 that correspond one-to-one with several limiting mechanisms. The limiting member 304 is provided with a mating structure that cooperates with the corresponding positioning structure 308. The positioning structure 308 positions the limiting member 304 to prevent instability caused by the limiting member 304 being in a cantilevered state when extended, thus improving the limiting reliability of the limiting member 304. It is understood that the positioning structure 308 may or may not be provided.

[0057] In one embodiment, the positioning structure 308 is a positioning pin, and the mating structure is a mating hole.

[0058] In another embodiment, the positioning structure 308 is a positioning hole, and the mating structure is a mating pin.

[0059] Furthermore, each limiting component also includes a positioning mounting piece 309, on which several positioning structures 308 are fixed. The positioning structures 308 are fixed by the positioning mounting piece 309, making the fixing simpler. Specifically, the positioning mounting piece 309 is a positioning mounting plate, and the material is easy to process and manufacture, reducing costs.

[0060] Furthermore, each limiting assembly also includes a limiting mounting member 313, in which a plurality of second driving members 305 are mounted on the limiting mounting member 313. Specifically, the limiting mounting member 313 is a limiting mounting plate, and the plate material is easy to process and manufacture, reducing costs.

[0061] In one embodiment, several rotating blade holders 2 are arranged in pairs, with two rotating blade holders 2 in each pair positioned opposite each other on both sides of the support frame 1. Each drive member is connected to a pair of rotating blade holders 2. The cutting machine also includes several support beams 310, which span across the support frame 1. Each first drive member 301 is fixed to one support beam 310. The drive members are supported by the support beams 310, providing more stable support.

[0062] It should be noted that each support beam 310 and its drive components, limit components, etc. form a drive limit module 3, and each drive limit module 3 cooperates with a pair of rotating tool holders 2.

[0063] Specifically, the positioning mounting component 309 and the limiting mounting component 313 are both fixed on the corresponding support beam 310, which can simplify the overall structure.

[0064] In another embodiment, each drive unit is connected to three or more rotating tool holders 2.

[0065] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the transmission mechanism is a gear and rack mechanism 302, which includes meshing gears 3021 and racks 3022. The driving end of each first driving member 301 is connected to the two racks 3022 corresponding to a pair of rotating tool holders 2. The two racks 3022 corresponding to a pair of rotating tool holders 2 are arranged on opposite sides of the support beam 310, and a gear 3021 is fixed on each rotating tool holder 2. The movement of the driving end of the first driving member 301 drives the two racks 3022 to move, which in turn drives the two gears 3021 and the two rotating columns 201 to rotate, thereby realizing the synchronous rotation of the two rotating tool holders 2. Two racks 3022 corresponding to a pair of rotating blade holders 2 are staggered on the support beam 310. The two rotating blade holders rotate in opposite directions when the blades are advancing or retracting, which ensures that when the blades are retracting, the blades on the rotating blade holders on both sides of the support beam 310 retract towards the tail of the blank, thus preventing damage to the already cut blank. When the blank advances during cutting, a rotational force is applied to the gear, which in turn applies a force to the rack and the piston rod of the drive cylinder. This force is in the same direction as the extension of the piston rod, causing the piston rod to be subjected to a tensile force. The staggered arrangement of the two racks 3022 ensures that the piston rod of the cylinder is not subjected to a compressive force during cutting, but rather a tensile force. The tensile force on the piston rod is precisely engaged with the mechanical limit formed by the first limit bolt, thus ensuring the reliability of the limit.

[0066] Furthermore, the cutting machine also includes several moving plates 311. The driving end of the first driving member 301 is connected to a moving plate 311, and two staggered racks 3022 are fixed on both sides of each moving plate 311. The moving plates 311 connect the racks 3022 and the driving end, making the connection simple. The rotating tool holders 2 on both sides of the support beam 310 are driven to rotate synchronously by a single driving member, maintaining synchronization while saving costs.

[0067] Specifically, the movable plate 311 is connected to the restricted member 312, which is a restricted plate. The movable plate 311 and the restricted plate can be integrally formed to form an L-shaped plate.

[0068] In one embodiment, in each limiting component, the number of limiting mechanisms is the same as the number of sets of plate cutters 202 of the corresponding rotary tool holder 2. When the piston rod retracts to the limit position, the rotary tool holder 2 is in the retracted position, and at this time, it is not necessary to use the limiting member 304 to limit the position of the rotary tool holder 2. Alternatively, when the piston rod extends to the limit position, the rotary tool holder 2 is in the cutting position, and at this time, it is not necessary to use the limiting member 304 to limit the position of the rotary tool holder 2.

[0069] In another embodiment, in each limiting component, the number of limiting mechanisms is greater than the number of sets of plate cutters 202 of the corresponding rotary cutter holder 2. For example, the rotary cutter holder 2 has four sets of plate cutters 202, and the number of limiting structures is five. Two adjacent limiting mechanisms restrict two positions of the plate cutters in each set.

[0070] In one embodiment, a guide mechanism 315 is provided between the movable plate 311 and the support beam 310. The guide mechanism 315 serves as a guide, ensuring that the movable plate 311 moves more smoothly and stably. The guide mechanism 315 is specifically a linear slide rail, etc.

[0071] In one embodiment, a mounting plate 314 is fixed to the bottom of the support beam 310. The mounting plate 314 is fixed to the support frame 1, and the support beam 310 is fixed to the support frame 1 by the mounting plate 314, which facilitates fixation.

[0072] According to an embodiment of the present invention, in another aspect, an aerated concrete production line is also provided, comprising: the above-described cutting machine.

[0073] In this embodiment, the automatic tool changer cutting machine includes a support frame 1, a rotating tool holder 2, and a drive limiting module 3. The rotating tool holder 2 includes a rotating column 201, a sheet metal blade 202, and a bearing with a seat 203. The drive limiting module 3 includes a support beam 310, a linear guide rail, a moving plate 311, a limiting plate, a gear 3021, a rack 3022, a limiting mounting plate, a positioning mounting plate, a fixed mounting plate 314, a drive cylinder, a limiting cylinder, a limiting block, a positioning pin, etc. The rotating tool holder 2 is connected to the support frame 1 via the bearing with a seat 203. The sheet metal cutter 202 is mounted on a rotating column 201 with multiple mounting positions arranged circumferentially. The drive limit module 3 is fixedly connected to the support frame 1 via a fixed mounting plate 314. Two racks 3022 on the moving plate 311 mesh with gears 3021 on the rotating blade holder 2, respectively. The support beam 310 is connected to the moving plate 311 via a linear slide rail. The gears 3021 are fixedly connected to the rotating column 201. When the cutting machine is working, the drive cylinder drives the two racks 3022 to move, thereby driving the corresponding two gears 3021 to rotate. Figure 8 As shown, when the rotating blade holder 2 reaches the cutting position, the plate blade 202 cuts both sides of the blank 5, forming tenons on both sides of the blank 5. After cutting is completed, the drive cylinder drives the gear 3021 to rotate counterclockwise by 45°. Figure 9 As shown, when the rotating tool holder 2 reaches the retraction position, the tool retraction is completed.

[0074] It should be noted that during the feed, the piston rod of the drive cylinder extends, the lower rotary tool holder 2 rotates counterclockwise, and the upper rotary tool holder 2 rotates clockwise. After the plate cutter 202 reaches the cutting position (e.g. Figure 8 As shown), the billet along Figure 8 and Figure 9 The billet 5 moves in the forward direction, and the plate cutter 202 cuts the billet 5. The billet 5 collides with the plate cutter 202, and the plate cutter 202 transmits the force generated by the collision to the piston rod. The piston rod is subjected to a tensile force that tightly adheres to the mechanical limit formed by the first limit bolt, thus ensuring the reliability of the limit. When retracting the cutter, the piston rod of the drive cylinder retracts, the lower rotating cutter holder 2 rotates clockwise, and the upper rotating cutter holder 2 rotates counterclockwise. When the plate cutter 202 reaches the retracted position (e.g., ...), the blank 5 moves forward in the forward direction. The plate cutter 202 cuts the blank 5. The blank ... moves forward in the forward direction, and the plate cutter 202 cuts the blank 5. The blank 5 collides with the plate cutter 202, and the plate cutter 202 transmits the force that generated by the collision to the piston rod. The piston rod is subjected to a tensile force that tightly adheres to the mechanical limit formed by the first limit bolt, thus ensuring the reliability of the limit. When retracting the cutter, the piston rod of the drive cylinder retracts, the lower rotating cutter holder 2 rotates clockwise, and the upper rotating cutter holder 2 rotates counterclockwise Figure 9 (As shown), complete the retraction of the tool.

[0075] Furthermore, limit blocks are respectively installed on the ends of the piston rods of the limit cylinders, and the limit blocks cooperate with the positioning pins. During operation, the limit cylinders move as needed. Figure 5 The left-side limiting block extends and engages with the positioning pin to form a limit. The drive cylinder extends to the first limiting bolt and is then limited. At this point, the rotating tool holder 2 is in the cutting position. Figure 5The limit block with the second limit screw on the right side is also pushed out. After the cutting is completed, the drive cylinder retracts and is limited by the second limit screw. At this time, the rotating tool holder 2 is in the retracted position. The cutting angle of the plate blade 202 can be finely adjusted by the limit screw.

[0076] In related technologies, one motor controls one rotary tool holder, and automatic tool changing for different specifications of sheet metal is achieved by driving one rotary tool holder to rotate with each motor. This results in a large number of motors and high usage and maintenance costs. In contrast, this application uses a cylinder and a gear and rack mechanism 302 to drive two oppositely arranged rotary tool holders 2, achieving automatic tool changing and positioning of the cutting and retraction positions, thus reducing usage and manual maintenance costs. In each drive limit module 3, two racks 3022 are staggered to achieve synchronous rotation of the rotary tool holders 2 on both sides of the support beam 310.

[0077] In related technologies, the rotary cutter holder is directly positioned by a motor. During cutting, the blank collides with the plate cutter, and the plate cutter transmits the force generated by the collision to the motor. The motor is susceptible to damage when subjected to external forces. Alternatively, the rotary cutter holder is positioned by a positioning pin and a positioning hole. However, there is a gap between the positioning pin and the positioning hole, resulting in inaccurate positioning and affecting cutting accuracy. The retraction of the cutter is achieved through an independent retraction mechanism, which is complex and has high maintenance costs. In contrast, this application uses a cylinder to drive the rotary cutter holder 2 to rotate. When the blank 5 collides with the plate cutter 202, the plate cutter 202 transmits the force generated by the collision to the piston rod. The piston rod is subjected to a tensile force that tightly adheres to the mechanical limit formed by the first limit bolt, thus ensuring the reliability of the limit and preventing damage to the cylinder. Furthermore, the limit assembly limits the cutting and retraction positions of the rotary cutter holder 2, achieving precise positioning of the rotary cutter holder 2 at the cutting and retraction positions. The positioning of the plate cutter 202 is more accurate and reliable.

[0078] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A cutting machine, characterized in that, include: Supporting framework (1); Several rotating tool holders (2) are rotatably arranged on both sides of the support frame (1), each of the rotating tool holders (2) having a cutting position and a retraction position; A plurality of first drive members (301), each first drive member (301) being connected to at least two of the rotary tool holders (2), each first drive member (301) driving at least two of the rotary tool holders (2) to rotate, so as to change the tool or to switch the corresponding rotary tool holder (2) between the cutting position and the retraction position; The driving end of the first driving member (301) is movably disposed, and the cutting machine further includes several transmission mechanisms. The driving end of each first driving member (301) cooperates with the corresponding rotating blade holder (2) through the transmission mechanism. Several of the rotating blade holders (2) are arranged in pairs, with two of the rotating blade holders (2) in each pair arranged opposite each other on both sides of the support frame (1). Each drive member is connected to a pair of rotating blade holders (2). The cutting machine also includes several support beams (310), which span across the support frame (1). Each of the first drive members (301) is fixed on one of the support beams (310). The transmission mechanism is a gear and rack mechanism (302), which includes meshing gears (3021) and racks (3022). The driving end of each of the first driving members (301) is connected to the two racks (3022) corresponding to a pair of rotating tool holders (2). The two racks (3022) corresponding to a pair of rotating tool holders (2) are arranged on opposite sides of the support beam (310). The gear (3021) is fixed on each rotating tool holder (2).

2. The cutting machine according to claim 1, characterized in that, The cutting machine also includes several limiting components, which are configured one-to-one with several first driving members (301). Each limiting component includes several limiting mechanisms. Each first driving member (301) has a limiting member (312) on its driving end. In each limiting component, several limiting mechanisms are arranged along the moving direction of the driving end of the corresponding first driving member (301). When one of any two adjacent limiting mechanisms cooperates with the limiting member (312), the rotating blade holder (2) is in the cutting position. When the other of any two adjacent limiting mechanisms cooperates with the limiting member (312), the rotating blade holder (2) is in the retraction position.

3. The cutting machine according to claim 2, characterized in that, Each of the limiting mechanisms includes a limiting member (304) and a second driving member (305). The second driving member (305) is fixedly disposed relative to the support frame (1). The driving end of the second driving member (305) is connected to the limiting member (304). The limiting member (304) has a limiting position that limits the limiting member (312) and an avoidance position that avoids the limiting member (312). The second driving member (305) drives the limiting member (304) to switch between the limiting position and the avoidance position.

4. The cutting machine according to claim 3, characterized in that, The limiting member (304) has an opening (3041) to avoid the piston rod of the first driving member (301). When the rotating tool holder (2) switches from the cutting position to the retracting position, the piston rod retracts.

5. The cutting machine according to claim 4, characterized in that, The limiting member (304) is provided with a movable first limiting adjustment member (306) and a movable second limiting adjustment member (307). When the end of the first limiting adjustment member (306) facing the cylinder of the first driving member (301) cooperates with the corresponding limiting member (312), the rotating tool holder (2) is in the cutting position. When the end of the second limiting adjustment member (307) away from the cylinder of the first driving member (301) cooperates with the corresponding limiting member (312), the rotating tool holder (2) is in the retraction position.

6. The cutting machine according to claim 5, characterized in that, Each of the limiting components also includes a plurality of positioning structures (308) that correspond one-to-one with the plurality of limiting mechanisms, and the limiting member (304) is provided with a mating structure that cooperates with the corresponding positioning structure (308).

7. An aerated concrete production line, characterized in that, include: The cutting machine according to any one of claims 1 to 6.

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