A laser cutting machine for the processing of composite mufflers

Abstract

The present invention relates to the technical field of laser cutting, and particularly to a laser cutting machine for the processing of composite mufflers, including a mounting block and a laser cutting head fixedly installed on the mounting block. It further includes a machine frame, and on the machine frame, there are provided: a mounting disk and a support disk that are distributed in parallel. Between the mounting disk and the support disk, there are a guiding rod for guiding the movement of the mounting block and a driving rod for driving the mounting block to move along the guiding rod. The laser cutting machine for the processing of composite mufflers provided by this invention cuts out a groove with an isosceles triangle cross-section in the middle of the plate by reciprocating movement of the laser cutting head, which facilitates subsequent re-cutting at the bottom of the groove to cut off the plate. The cut plate is then bent into a cylindrical blank, and a chamfer is formed on the inner side of the blank to facilitate its cooperation with the disk-shaped plate. Moreover, the welding points on the inner and outer sides of the disk-shaped plate and the blank are not in the same plane.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and more particularly to a laser cutting machine for processing composite mufflers. Background Art

[0002] A composite muffler is a device that can simultaneously suppress various frequency noises, has a strong noise elimination ability, and can effectively reduce the impact of equipment noise on the surrounding environment. It absorbs and isolates different frequency noises by using sound-absorbing layers and isolation layers of different materials, and then comprehensively arranges them through a pipeline with a streamlined geometric shape, so that the noise generated by the machine is absorbed and consumed within the sound-absorbing layer and geometric shape, thereby effectively reducing the spread of noise.

[0003] Laser cutting uses a laser generator on a laser cutting machine to generate a high-energy laser beam, cuts materials by irradiating the laser beam, and changes the materials to achieve material cutting. Laser cutting machines adopt laser cutting technology and have the advantages of high cutting accuracy, high speed, low cost, and non-contact cutting.

[0004] According to the patent with the publication (announcement) number CN106523439B and the publication (announcement) date of October 10, 2017, a medium- and high-frequency composite muffler is disclosed, which includes an air inlet for introducing the high-speed air flow of a blower, an air inlet end cavity communicated with the air inlet for changing the flow direction of the introduced high-speed air flow, a resistive material cavity communicated with the air inlet end cavity for converting the sound energy of the high-speed air flow after changing the flow direction into heat energy, an outlet end cavity communicated with the resistive material cavity for changing the flow direction of the high-speed air flow after sound energy conversion, and an air outlet communicated with the outlet end cavity for leading out the high-speed air flow in the outlet end cavity. This device combines the advantages of a resistive muffler and variable-direction noise elimination by using the air inlet, air inlet end cavity, resistive material cavity, outlet end cavity, and air outlet, and can effectively reduce the high-frequency noise of a high-speed and efficient blower. While allowing the air flow to pass through, it can effectively prevent or weaken the outward propagation of sound energy, has medium- and high-frequency noise elimination performance, and is mainly used for noise control of the inlet and exhaust pipes or ventilation pipes of blower equipment. The medium- and high-frequency composite muffler provided by the present invention is small in volume, simple in structure, easy to process, low in manufacturing cost, and has little impact on the aerodynamic performance of the entire blower.

[0005] In the prior art including the above patents, most impedance composite mufflers are cylindrical. When manufacturing such composite mufflers, the sheet material is first cut and processed, then bent into a cylindrical shape, and then other components are installed into the cylinder, and finally the sealing process is carried out. To ensure the noise reduction effect and the service life of the composite muffler, the thickness of the sheet material used for the composite muffler is relatively large, and a higher-energy laser beam is required to cut the sheet material, resulting in higher production costs. Moreover, when sealing the cylinder, a disc needs to be welded to the cylinder, and the connection between the cylinder and the disc is affected by the processing accuracy of the sheet material and the welding effect, making it difficult to control the quality of the finished product. Summary of the Invention

[0006] The object of the present invention is to provide a laser cutting machine for processing composite mufflers, aiming to solve the above problems.

[0007] To achieve the above object, the present invention provides a laser cutting machine for processing composite mufflers, including a mounting block and a laser cutting head fixedly installed on the mounting block, and further including a frame, on which are provided:

[0008] Parallelly distributed mounting disks and supporting disks, between which are provided guide rods for guiding the movement of the mounting block and driving rods for driving the mounting block to move along the guide rods, wherein:

[0009] The driving rod rotates to make the mounting block reciprocate between the mounting disk and the supporting disk, and when the mounting block moves to the end of the guide rod, the driving rod drives the mounting disk and the supporting disk to rotate.

[0010] Preferably, a mounting shaft for supporting the mounting disk and the supporting disk is movably provided on the frame, and when the mounting block moves to the end of the guide rod, the driving rod is coupled with the mounting shaft.

[0011] Preferably, a movable rod is slidably provided on the frame, and when the mounting block reciprocates for one cycle, the movable rod pushes away the waste material cut out from the sheet material.

[0012] Preferably, the mounting disk is assembled for the following three working positions:

[0013] The first working position, the laser cutting head obliquely cuts the sheet material;

[0014] The second working position, the mounting disk drives the laser cutting head to rotate, and the laser cutting head cuts the sheet material on the opposite side to cut out a triangular prism-shaped waste material;

[0015] The third working position, the mounting disk rotates in the reverse direction and moves downward, so that the laser cutting head is directly opposite to the bottom of the groove cut out in the previous two working positions.

[0016] Preferably, a guide groove is formed on the frame, and a tenon rod adapted to the guide groove is arranged on the mounting disc. The tenon rod moves along the guide groove to switch the working positions of the mounting disc.

[0017] Preferably, the guide groove includes an arc portion, a vertical portion located inside the middle of the arc portion, and a connecting portion connecting the vertical portion and the first end of the arc portion.

[0018] Preferably, the upper end of the connecting portion is located in the middle of the vertical portion, and a second movable piece is hinged at the connection between the connecting portion and the arc portion.

[0019] Preferably, a first movable piece that only allows the tenon rod moving from the second end of the arc portion to enter the vertical portion is hinged at the top end of the vertical portion.

[0020] Preferably, a synchronous block is axially slidably arranged on the driving rod. A first sprocket coupled to the mounting shaft is arranged inside the mounting disc. A ejector rod is slidably arranged on the mounting disc. The mounting block moves to push the ejector rod to drive the synchronous block to engage with the first sprocket.

[0021] Preferably, a first gear is arranged on the synchronous block, and a sliding rod is arranged on the support disc. The mounting block pushes the sliding rod to move the first gear and couple it with the mounting shaft.

[0022] In the above technical solution, a laser cutting machine for composite muffler processing provided by the present invention has the following beneficial effects: When performing cutting work, the sheet is placed in the groove on the frame and fixed with a fixture. The laser cutting head works, and the sheet is obliquely cut on the first side in the middle of the sheet. The motor outputs torque to drive the driving rod to rotate. The driving rod pushes the mounting block to drive the laser cutting head to move along the guiding rod from a position close to the mounting disc to a position close to the support disc. When the mounting block moves to the end of the guiding rod, the driving rod drives the mounting disc and the support disc to rotate, so that the laser cutting head tilts towards the other side of the sheet. The driving rod continues to rotate to drive the laser cutting head to move from a position close to the support disc to a position close to the mounting disc and obliquely cut the sheet, cutting out a groove with an isosceles triangle cross-section in the middle of the sheet, which is convenient for subsequent re-cutting at the bottom of the groove to cut off the sheet. After the sheet is cut off, it is bent into a cylindrical blank. A chamfer is formed on the inner side of the blank, which is convenient for its cooperation with the disc-shaped sheet, and the welding points on the inner and outer sides of the disc-shaped sheet and the blank are not in the same plane. For the conventional welding of a cylinder and a disc, the welding points on the inner and outer sides are in the same plane, and the probability of welds appearing is greater; The laser cutting head performs cutting work on both sides in the middle of the sheet, cutting out grooves with an isosceles triangle cross-section on the sheet, which not only facilitates the subsequent welding work of the composite muffler shell, but also reduces the thickness of the sheet, making it convenient to cut thicker sheets with a laser cutting machine with lower energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0024] Figure 1 Schematic diagram of the overall structure provided by the embodiment of the present invention;

[0025] Figure 2 For Figure 1 Enlarged view at position A in

[0026] Figure 3 Schematic diagram of the internal structure of the frame provided by the embodiment of the present invention;

[0027] Figure 4 For Figure 3 Enlarged view at position B in

[0028] Figure 5 Schematic diagram of the structure of the ejector rod provided by the embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the internal structure of the mounting plate provided by the embodiment of the present invention;

[0030] Figure 7 For Figure 6 Enlarged view at position C in

[0031] Figure 8 For Figure 6 Enlarged view at position D in

[0032] Figure 9 For Figure 7 Enlarged view at position E in

[0033] Figure 10 Schematic diagram of the structure of the mounting shaft provided by the embodiment of the present invention;

[0034] Figure 11 Schematic diagram of the internal structure of the drive rod provided by the embodiment of the present invention;

[0035] Figure 12 Schematic diagram of the structure of the movable rod provided by the embodiment of the present invention;

[0036] Figure 13 Schematic diagram of the structure of the composite muffler housing provided by the embodiment of the present invention;

[0037] Figure 14 Schematic diagram of the cut structure of the plate provided by the embodiment of the present invention.

[0038] Description of the reference numerals:

[0039] 1. Frame; 11. Mounting plate; 111. Guide rod; 112. Driving rod; 113. Synchronization block; 114. First gear; 115. Ejector rod; 116. Slide rod; 117. Cable; 118. Tenon rod; 119. First sprocket; 12. Movable frame; 121. Mounting shaft; 122. Second sprocket; 123. Second gear; 124. First movable piece; 125. Guide groove; 126. Arc part; 127. Vertical part; 128. Connecting part; 129. Second movable piece; 13. Movable rod; 131. Reed; 132. Paddle; 133. Push rod; 134. Support disk; 14. Laser cutting head; 141. Mounting block. Detailed implementation manners

[0040] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0041] As Figures 1-14 shown, a laser cutting machine for the processing of composite mufflers includes a mounting block 141 and a laser cutting head 14 fixedly mounted on the mounting block 141, and further includes a frame 1. The frame 1 is provided with:

[0042] Parallelly distributed mounting plate 11 and support disk 134. Between the mounting plate 11 and the support disk 134, there are provided a guide rod 111 for guiding the movement of the mounting block 141 and a driving rod 112 for driving the mounting block 141 to move along the guide rod 111. Among them:

[0043] The driving rod 112 rotates to make the mounting block 141 reciprocate between the mounting plate 11 and the support disk 134. When the mounting block 141 moves to the end of the guide rod 111, the driving rod 112 drives the mounting plate 11 and the support disk 134 to rotate.

[0044] Specifically, a groove adapted to the plate is formed on the frame 1. In the groove, there is provided a fixture for fixing the plate. The driving rod 112 is specifically a reciprocating lead screw. A through hole adapted to the reciprocating lead screw is formed on the mounting block 141. A motor is arranged inside the mounting plate 11. The driving rod 112 is fixedly mounted on the output end of the motor. A through hole adapted to the guide rod 111 is formed on the mounting block 141.

[0045] In the above technical solution, when performing the cutting work, the plate is placed in the groove on the frame 1 and fixed with the fixture. The laser cutting head 14 works. On the first side in the middle of the plate (taking Figure 1Based on this, the side where the laser cutting head 14 is located is the first side), and the plate is obliquely cut. The motor output torque drives the driving rod 112 to rotate. The driving rod 112 pushes the mounting block 141 to drive the laser cutting head 14 to move along the guiding rod 111 from a position close to the mounting disc 11 to a position close to the supporting disc 134. When the mounting block 141 moves to the end of the guiding rod 111, the driving rod 112 drives the mounting disc 11 and the supporting disc 134 to rotate, causing the laser cutting head 14 to tilt towards the other side of the plate. The driving rod 112 continues to rotate to drive the laser cutting head 14 to move from a position close to the supporting disc 134 to a position close to the mounting disc 11 and obliquely cut the plate, cutting out a groove with an isosceles triangle cross-section in the middle of the plate, which is convenient for subsequent re-cutting at the bottom of the groove to cut off the plate. The cut plate is then bent into a cylindrical blank, and a chamfer is formed on the inner side of the blank, which is convenient for its cooperation with the disc-shaped plate, and the inner and outer welding points of the disc-shaped plate and the blank are not in the same plane. In the conventional welding of a cylinder and a disc, the inner and outer welding points are in the same plane, and the probability of weld formation is greater; the laser cutting head 14 performs cutting operations on both sides of the middle of the plate, cutting out grooves with an isosceles triangle cross-section on the plate, which not only facilitates the subsequent welding work of the composite muffler housing, but also reduces the thickness of the plate, making it convenient to cut thicker plates with a laser cutting machine with lower energy.

[0046] As a further embodiment provided by the present invention, a mounting shaft 121 for supporting the mounting disc 11 and the supporting disc 134 is movably provided on the frame 1, and the mounting block 141 moves to the end of the guiding rod 111 to couple the driving rod 112 with the mounting shaft 121.

[0047] Specifically, a movable frame 12 is slidably provided on the frame 1, the mounting shaft 121 is fixedly installed on the movable frame 12, and a spring is provided between the movable frame 12 and the frame 1.

[0048] Furthermore, when the mounting block 141 moves to the end of the guiding rod 111, the driving rod 112 is coupled with the mounting shaft 121, and the mounting shaft 121 cannot rotate. The driving rod 112 outputs power to drive the mounting disc 11 and the laser cutting head 14 to rotate.

[0049] As another further embodiment provided by the present invention, the mounting disc 11 is assembled for the following three working positions:

[0050] The first working position, the laser cutting head 14 obliquely cuts the plate;

[0051] The second working position, the mounting disc 11 drives the laser cutting head 14 to rotate, and the laser cutting head 14 cuts the plate on the opposite side to cut out a triangular prism-shaped surplus material;

[0052] The third working position, the mounting disc 11 rotates in the reverse direction and moves downward so that the laser cutting head 14 is directly opposite to the bottom of the groove cut in the previous two working positions.

[0053] Specifically, when the mounting disc 11 is at the first station and the second station, the axis of the mounting disc 11 is at the intersection of the gaps cut by the laser cutting head 14 at the first station and the second station.

[0054] Further, during operation, the mounting disc 11 is located at the first station, the laser cutting head 14 moves and obliquely cuts the plate, then the mounting disc 11 rotates to the second station, the laser cutting head 14 cuts the plate, and a groove with an isosceles triangle cross-section is cut in the middle of the plate. Then the mounting disc 11 rotates in the reverse direction to move the laser cutting head 14 to a position perpendicular to the plate and then move downward, so that the laser cutting head 14 penetrates into the groove on the plate, and the laser cutting head 14 vertically cuts the plate to cut the plate off.

[0055] As another embodiment further provided by the present invention, a guide groove 125 is provided on the frame 1, and a tenon rod 118 adapted to the guide groove 125 is provided on the mounting disc 11, and the tenon rod 118 moves along the guide groove 125 to switch the working positions of the mounting disc 11.

[0056] Specifically, during the movement of the mounting disc 11, the guide groove 125 on the frame 1 cooperates with the tenon rod 118 and the mounting shaft 121 on the mounting disc 11 to limit the position and orientation of the mounting disc 11, so that the mounting disc 11 moves to the first station, the second station, the third working position in sequence, and then returns to the first station for plate cutting work.

[0057] As another embodiment further provided by the present invention, the guide groove 125 includes an arc portion 126, a vertical portion 127 located inside the middle of the arc portion 126, and a connecting portion 128 connecting the vertical portion 127 and the first end of the arc portion 126.

[0058] Specifically, during the cutting work, the driving rod 112 is coupled with the mounting shaft 121, and the mounting shaft 121 is restricted by the movable frame 12 to make the mounting disc 11 rotate relative to the mounting shaft 121, so that the tenon rod 118 moves along the arc portion 126, so that the mounting disc 11 moves from the first station to the second station. Then the mounting disc 11 rotates in the reverse direction relative to the mounting shaft 121, and the tenon rod 118 moves to directly above the vertical portion 127. At this time, the movable frame 12 moves downward under the action of gravity, and the tenon rod 118 is embedded in the vertical portion 127, and the mounting disc 11 enters the third station. Then the mounting disc 11 continues to rotate in the reverse direction, the tenon rod 118 moves along the connecting portion 128, the mounting disc 11 and the movable frame 12 move upward, and the mounting disc 11 gradually returns to the first position.

[0059] As another embodiment further provided by the present invention, a first movable piece 124 that only allows the tenon rod 118 moving from the second end of the arc portion 126 to enter the vertical portion 127 is hinged to the top end of the vertical portion 127.

[0060] Specifically, a torsion spring is provided between the first movable piece 124 and the frame 1.

[0061] Further, during the movement of the mounting disc 11 from the first station to the second station, the tenon rod 118 moves along the arc portion 126 of the guide groove 125 and pushes the first movable piece 124. The first movable piece 124 seals the vertical portion 127, and the tenon rod 118 can move to the second end of the arc portion 126 ( Figure 4 where the position of the tenon rod 118 is the first end of the arc portion 126). During the movement of the mounting disc 11 from the second station to the third station, the reverse rotation of the mounting disc 11 drives the tenon rod 118 to move from the second end of the arc portion 126 to the middle of the arc portion 126. At this time, the first movable piece 124 seals the arc portion 126, the vertical portion 127 is opened, and the movable frame 12 moves downward under the action of gravity. The tenon rod 118 is embedded in the vertical portion 127, and the mounting disc 11 enters the third station.

[0062] As another embodiment further provided by the present invention, the upper end of the connecting portion 128 is located in the middle of the vertical portion 127, and a second movable piece 129 is hinged at the connection between the connecting portion 128 and the arc portion 126.

[0063] Specifically, a push rod 133 is provided on the frame 1 below the vertical portion 127. The push rod 133 extends below the plate. A spring is provided between the push rod 133 and the frame 1, and a torsion spring is provided between the second movable piece 129 and the frame 1.

[0064] Further, when the mounting disc 11 moves to the third station, the tenon rod 118 is stuck at the bottom of the vertical portion 127, restricting the normal operation of the mounting disc 11. The laser cutting head 14 cuts the plate. After the plate cutting is completed, the plate is removed from the frame 1. At this time, the push rod 133 is no longer pressed, and the push rod 133 moves upward under the action of the spring. The push rod 133 pushes the tenon rod 118 upward, so that the tenon rod 118 is directly opposite to the upper end of the connecting portion 128. At this time, the mounting disc 11 continues to rotate in the reverse direction, the tenon rod 118 moves along the connecting portion 128, the mounting disc 11 and the movable frame 12 move upward, the mounting disc 11 gradually returns to the first position, the tenon rod 118 pushes the second movable piece 129 back into the arc portion 126, and the second movable piece 129 seals the connecting portion 128 under the action of the torsion spring.

[0065] As another embodiment further provided by the present invention, a synchronous block 113 is axially slidably arranged on the driving rod 112. A first sprocket 119 coupled to the mounting shaft 121 is arranged inside the mounting disc 11. A top rod 115 is slidably arranged on the mounting disc 11. The mounting block 141 moves to push the top rod 115 to drive the synchronous block 113 to be embedded in the first sprocket 119.

[0066] Specifically, a second sprocket 122 is provided on the mounting shaft 121. A synchronous chain is provided between the second sprocket 122 and the first sprocket 119. A notch adapted to the synchronous block 113 is provided on the first sprocket 119. A spring is provided between the ejector rod 115 and the mounting disc 11, and a spring is provided between the synchronous block 113 and the drive rod 112.

[0067] Further, when the mounting block 141 approaches the mounting disc 11, the mounting block 141 pushes the ejector rod 115 to move inwardly of the mounting disc 11. The ejector rod 115 pushes the synchronous block 113 to move. The synchronous block 113 is inserted into the first sprocket 119. The drive rod 112 drives the first sprocket 119 to rotate through the synchronous block 113. However, the second sprocket 122 is restricted by the mounting shaft 121 and cannot rotate. Thus, the first sprocket 119 drives the mounting disc 11 to rotate.

[0068] As another embodiment further provided by the present invention, a first gear 114 is provided on the synchronous block 113. A slide rod 116 is provided on the support disc 134. The mounting block 141 pushes the slide rod 116 to move the first gear 114 and couple it with the mounting shaft 121.

[0069] Specifically, a spring is provided between the slide rod 116 and the support disc 134. A cable 117 is provided between the slide rod 116 and the synchronous block 113. A second gear 123 meshing with the first gear 114 is provided on the mounting shaft 121.

[0070] A movable rod 13 is slidably provided on the frame 1. The mounting block 141 reciprocates in a cycle to push away the waste material cut out on the sheet by the movable rod 13. A spring is provided between the movable rod 13 and the frame 1. A reed 131 extending into the frame 1 is provided on the movable rod 13. A flap 132 is hinged on the movable rod 13. A torsion spring is provided between the flap 132 and the movable rod 13.

[0071] Further, when performing cutting work, the sheet is placed in the groove on the frame 1 and fixed with a fixture. The laser cutting head 14 works. On the first side in the middle of the sheet (taking Figure 1Based on this, the laser cutting head 14 cuts the plate at an angle (the side where the laser cutting head 14 is located is the first side). The motor output torque drives the driving rod 112 to rotate. The driving rod 112 pushes the mounting block 141 to drive the laser cutting head 14 to move along the guiding rod 111 from a position close to the mounting disk 11 to a position close to the supporting disk 134. When the cutting on this side is completed, the mounting block 141 abuts against the sliding rod 116 and pushes the sliding rod 116 to move into the supporting disk 134. The sliding rod 116 drives the synchronizing block 113 and the first gear 114 to move through the traction rope, so that the first gear 114 on the driving rod 112 meshes with the second gear 123 on the mounting shaft 121. The driving rod 112 continues to rotate while the mounting shaft 121 cannot rotate. The driving rod 112 drives the mounting disk 11 and the supporting disk 134 to rotate through the first gear 114, so that the laser cutting head 14 tilts to the other side of the plate, and the tenon rod 118 on the mounting disk 11 moves along the arc portion 126 of the guiding groove 125 and pushes the first movable piece 124. The first movable piece 124 seals the vertical portion 127. The tenon rod 118 can move to the second end of the arc portion 126. The guiding rod 111 pushes the movable rod 13 to move. The spring between the movable rod 13 and the frame 1 stores elastic potential energy and the reed piece 131 is embedded in the frame 1 to temporarily lock the movable rod 13.

[0072] The driving rod 112 continues to rotate to drive the laser cutting head 14 to move from a position close to the supporting disk 134 to a position close to the mounting disk 11 and cut the plate at an angle, cutting out a groove with an isosceles triangle cross-section in the middle of the plate. After the cutting on this side is also completed, the driving rod 112 continues to rotate. The mounting block 141 pushes the ejector rod 115 to move. The ejector rod 115 pushes the synchronizing block 113 to move. The synchronizing block 113 is embedded in the first sprocket 119. The driving rod 112 drives the first sprocket 119 to rotate through the synchronizing block 113, while the second sprocket 122 is restricted by the mounting shaft 121 and cannot rotate. Thus, the first sprocket 119 drives the mounting disk 11 to rotate in the reverse direction. The movable rod 13 is separated from the guiding rod 111. The spring releases the elastic potential energy. The reed piece 131 gradually deforms and cannot lock the movable rod 13. The movable rod 13 is unlocked. The spring pushes the movable rod 13 to move quickly and, under the action of inertia, moves to the position of the remaining material that has been cut off. The dial 132 is embedded in the gap between the remaining material and the plate and pushes the remaining material away. The movement of the movable rod 13 gradually stops and returns to the initial position under the action of the spring, no longer blocking the groove at the top of the plate. And the tenon rod 118 moves from the second end of the arc portion 126 to the middle of the arc portion 126. At this time, the first movable piece 124 seals the arc portion 126 and the vertical portion 127 is opened. The movable frame 12 moves downward under the action of gravity. The tenon rod 118 is embedded in the vertical portion 127. The mounting disk 11 enters the third working position. The tenon rod 118 is stuck at the bottom of the vertical portion 127, restricting the normal operation of the mounting disk 11. The laser cutting head 14 extends into the groove on the plate. The driving rod 112 continues to rotate to drive the laser cutting head 14 to move and cut the plate off.

[0073] After the sheet is cut, the sheet is removed from the frame 1. At this time, the push rod 133 is no longer pressed, and the push rod 133 moves upward under the action of the spring. The push rod 133 pushes the tenon rod 118 upward, so that the tenon rod 118 is aligned with the upper end of the connecting portion 128. The motor outputs a reverse torque to drive the mounting block 141 to move from a position close to the support disk 134 to a position close to the mounting disk 11, and pushes the ejector rod 115 to move again. The first sprocket 119 is coupled with the mounting shaft 121. At this time, the mounting disk 11 continues to rotate in the reverse direction, the tenon rod 118 moves along the connecting portion 128, the mounting disk 11 and the movable frame 12 move upward, the mounting disk 11 gradually returns to the first position, the tenon rod 118 pushes the second movable piece 129 back into the arc portion 126, and the second movable piece 129 seals the connecting portion 128 under the action of the torsion spring.

[0074] The cut sheet is then bent into a cylindrical blank, and a chamfer is formed on the inner side of the blank to facilitate its cooperation with the disk-shaped sheet. Moreover, the inner and outer side welding points of the disk-shaped sheet and the blank are not in the same plane. In the conventional welding of a cylinder and a disk, the inner and outer side welding points are in the same plane, and the probability of weld formation is greater. The laser cutting head 14 performs cutting operations on both sides of the middle of the sheet, cutting out grooves with an isosceles triangle cross-section on the sheet, which not only facilitates the subsequent welding work of the composite muffler housing, but also reduces the thickness of the sheet, making it convenient to cut thicker sheets with a laser cutting machine with lower energy.

[0075] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laser cutting machine for the processing of composite mufflers, comprising a mounting block and a laser cutting head fixedly mounted on the mounting block, characterized in that, It further includes a frame on which are provided: An installation disk and a support disk that are distributed in parallel. Between the installation disk and the support disk, there are provided guide rods for guiding the movement of the installation block and drive rods for driving the installation block to move along the guide rods, where: The drive rods rotate to enable the installation block to reciprocate between the installation disk and the support disk. When the installation block moves to the end of the guide rod, the drive rods drive the installation disk and the support disk to rotate; An installation shaft for supporting the installation disk and the support disk is movably arranged on the frame. When the installation block moves to the end of the guide rod, the drive rods are coupled with the installation shaft; A synchronization block is axially slidably arranged on the drive rods. Inside the installation disk, there is a first sprocket coupled with the installation shaft. A push rod is slidably arranged on the installation disk. When the installation block moves, it pushes the push rod to drive the synchronization block to be inserted into the first sprocket. A second sprocket is arranged on the installation shaft, and a synchronization chain is arranged between the second sprocket and the first sprocket. Notches adapted to the synchronization block are provided on the first sprocket; A first gear is arranged on the synchronization block, and a slide rod is arranged on the support disk. The installation block pushes the slide rod to move the first gear and couple it with the installation shaft. A cable is arranged between the slide rod and the synchronization block, and a second gear meshing with the first gear is arranged on the installation shaft.

2. The laser cutting machine for composite muffler processing according to claim 1, characterized in that A movable rod is slidably arranged on the frame. When the installation block reciprocates in one cycle, the movable rod pushes away the cut-off waste material on the sheet.

3. A laser cutting machine for processing composite mufflers according to claim 2, characterized in that, The installation disk is assembled for the following three workstations: The first workstation, where the laser cutting head obliquely cuts the sheet; The second workstation, where the installation disk drives the laser cutting head to rotate, and the laser cutting head cuts the sheet from the opposite side to cut out a triangular prism-shaped waste material; The third workstation, where the installation disk rotates in the reverse direction and moves downward so that the laser cutting head faces the bottom of the groove cut out in the previous two workstations.

4. A laser cutting machine for the processing of composite mufflers according to claim 3, characterized in that, A guide groove is provided on the frame, and a tenon rod adapted to the guide groove is arranged on the installation disk. The tenon rod moves along the guide groove to switch the workstations of the installation disk.

5. A laser cutting machine for processing composite mufflers according to claim 4, characterized in that, The guide groove includes an arc portion, a vertical portion located inside the middle of the arc portion, and a connecting portion connecting the vertical portion and the first end of the arc portion.

6. A laser cutting machine for processing composite mufflers according to claim 5, characterized in that, The upper end of the connecting portion is located in the middle of the vertical portion, and a second movable piece is hinged at the connection between the connecting portion and the arc portion.

7. A laser cutting machine for processing a composite muffler according to claim 6, characterized in that A first movable piece that only allows the tenon rod moving from the second end of the arc portion to enter the vertical portion is hinged at the top of the vertical portion.

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