Laser cutting machine for machining composite silencer

Abstract

The invention relates to the technical field of laser cutting, in particular to a laser cutting machine for machining a composite silencer, which comprises a mounting block and a laser cutting head fixedly mounted on the mounting block, and further comprises a rack, and the rack is provided with a mounting disc and a supporting disc which are distributed in parallel, a guide rod used for guiding the mounting block to move and a driving rod used for driving the mounting block to move along the guide rod are arranged between the mounting disc and the supporting disc. According to the laser cutting machine for machining the composite silencer, the laser cutting head reciprocates to cut a groove with the cross section being an isosceles triangle in the middle of a plate, the bottom of the groove is conveniently cut again subsequently, the plate is cut off, the cut-off plate is bent into a cylindrical blank, and a chamfer is formed on the inner side of the blank; and in addition, the welding points of the disc-shaped plate and the inner side and the outer side of the blank are not on the same plane.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a laser cutting machine used for processing a composite muffler. Background Art

[0002] The composite muffler is a device that can suppress noise of various frequencies at the same time. It has a strong muffler ability and can effectively reduce the impact of equipment noise on the surrounding environment. It uses sound-absorbing layers and isolation layers of different materials to absorb and isolate noise of different frequencies, and then uses streamlined geometric pipes for comprehensive arrangement, so that the noise generated by the machine is absorbed and consumed in the sound-absorbing layer and geometric shape, thereby effectively reducing the spread of noise.

[0003] Laser cutting uses the laser on the laser cutting machine to generate a high-energy laser beam, which cuts the material by irradiating the laser beam, causing the material to change and achieve cutting of the material. The laser cutting machine uses laser cutting technology and has the advantages of high cutting accuracy, fast speed, low cost, and non-contact cutting.

[0004] According to the publication (announcement) number CN106523439B, the publication (announcement) date is 2017-10-10, and a medium and high frequency composite muffler is disclosed, including an air inlet for introducing a high-speed airflow of a blower, an air inlet end cavity communicating with the air inlet for changing the flow direction of the introduced high-speed airflow, a resistive material cavity communicating with the air inlet end cavity for converting the acoustic energy of the high-speed airflow after the flow direction is changed into thermal energy, an air outlet end cavity communicating with the resistive material cavity and for changing the flow direction of the high-speed airflow after the acoustic energy conversion, and an air outlet communicating with the air outlet end cavity for leading out the high-speed airflow in the air outlet end cavity. The device adopts an air inlet, an air inlet end cavity, a resistive material cavity, an air outlet end cavity and an air outlet, and combines the advantages of a resistive muffler and a reversing muffler, and can effectively reduce the high-frequency noise of a high-speed and high-efficiency blower. While allowing airflow to pass through, it can effectively prevent or reduce the propagation of sound energy outward, and has medium and high frequency silencing 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 silencer provided by the present invention has small size, simple structure, easy processing, low manufacturing cost, and little effect on the aerodynamic performance of the blower.

[0005] In the prior art including the above-mentioned patents, impedance composite silencers are mostly cylindrical. During production, such composite silencers first cut and process the plate, then bend the plate into a cylinder, then install other components into the cylinder, and finally seal it. In order to ensure the silencing effect and the service life of the composite silencer, the plate used in the composite silencer is relatively thick, and a higher energy laser beam is required to cut the plate, which results in higher production costs. In addition, a disc needs to be welded to the cylinder when the cylinder is sealed. The connection between the cylinder and the disc is affected by the plate processing accuracy and welding effect, and it is difficult to control the quality of the finished product. Summary of the invention

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

[0007] In order to achieve the above-mentioned object, the present invention provides a laser cutting machine for composite muffler processing, comprising a mounting block and a laser cutting head fixedly mounted on the mounting block, and a frame, on which are provided:

[0008] A mounting plate and a supporting plate are arranged in parallel, and a guide rod for guiding the movement of the mounting block and a driving rod for driving the mounting block to move along the guide rod are arranged between the mounting plate and the supporting plate, wherein:

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

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

[0011] Preferably, a movable rod is slidably provided on the frame, and the mounting block reciprocates in one cycle so that the movable rod pushes away the remaining material cut out of the plate.

[0012] Preferably, the mounting plate is equipped for the following three stations:

[0013] At the first station, the laser cutting head cuts the plate obliquely;

[0014] At the second station, the mounting plate drives the laser cutting head to rotate, and the laser cutting head cuts the plate on the opposite side to cut out a triangular prism-shaped residual material;

[0015] At the third station, the mounting plate rotates in the opposite direction and moves downward so that the laser cutting head faces the bottom of the groove cut at the first two stations.

[0016] Preferably, a guide groove is provided on the frame, and a tenon rod adapted to the guide groove is provided on the mounting plate, and the tenon rod moves along the guide groove to switch the working position of the mounting plate.

[0017] Preferably, the guide groove includes an arc portion, a vertical portion located inside a middle portion of the arc portion, and a connecting portion connecting the vertical portion and a 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 hingedly connected at the connection between the connecting portion and the arc portion.

[0019] Preferably, a first movable piece is hingedly connected to the top end of the vertical portion, which only allows the tenon rod moved by the second end of the arc portion to enter the vertical portion.

[0020] Preferably, a synchronization block is axially slidably provided on the driving rod, a first sprocket coupled to the mounting shaft is provided inside the mounting disk, a push rod is slidably provided on the mounting disk, and the mounting block moves to push the push rod to drive the synchronization block to embed into the first sprocket.

[0021] Preferably, a first gear is disposed on the synchronization block, a slide bar is disposed on the support plate, and the mounting block pushes the slide bar to move the first gear and couple it with the mounting shaft.

[0022] In the above technical scheme, the present invention provides a laser cutting machine for composite muffler processing, which has the following beneficial effects: when performing cutting work, the plate is placed in the groove on the frame and fixed with a clamp. The laser cutting head works and cuts the plate at an angle on the first side of the middle of the plate. The motor outputs torque to drive the driving rod to rotate. The driving rod pushes the mounting block to carry the laser cutting head along the guide rod from a position close to the mounting plate to a position close to the support plate. When the mounting block moves to the end of the guide rod, the driving rod drives the mounting plate and the support plate to rotate, so that the laser cutting head tilts to the other side of the plate. The driving rod continues to rotate to drive the laser cutting head from a position close to the support plate to a position close to the mounting plate, and cuts at an angle. Cut the plate, cut a groove with an isosceles triangle cross section in the middle of the plate, so as to facilitate subsequent cutting at the bottom of the groove, cut the plate, and bend the cut plate into a cylindrical blank. The inner side of the blank is chamfered to facilitate its cooperation with the disc-shaped plate, and the inner and outer welding points of the disc-shaped plate and the blank are not on the same plane. The inner and outer welding points of the conventional cylinder and disc are on the same plane, and the probability of welds is greater; the laser cutting head performs cutting work on both sides of the middle of the plate, and cuts a groove with an isosceles triangle cross section on the plate, which not only facilitates the subsequent welding work of the composite muffler shell, but also reduces the thickness of the plate, making it convenient to cut thicker plates with lower energy laser cutting machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 A schematic diagram of the internal structure of a rack provided by an embodiment of the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 A schematic diagram of the structure of a push rod provided in an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the internal structure of the installation disk provided in an embodiment of the present invention;

[0030] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0031] Figure 8 for Figure 6 Enlarged view of point D in the middle;

[0032] Fig. 9 for Figure 7 Enlarged view of point E in the middle;

[0033] Fig.10 A schematic diagram of the structure of the installation shaft provided by an embodiment of the present invention;

[0034] Fig.11 A schematic diagram of the internal structure of a driving rod provided by an embodiment of the present invention;

[0035] Fig.12 A schematic diagram of the structure of a movable rod provided by an embodiment of the present invention;

[0036] Fig.13 A schematic diagram of the structure of a composite muffler housing provided by an embodiment of the present invention;

[0037] Fig.14 A schematic diagram of the incision structure of a plate provided in an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 1. Frame; 11. Mounting plate; 111. Guide rod; 112. Drive rod; 113. Synchronous block; 114. First gear; 115. Push 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 sheet; 125. Guide groove; 126. Arc portion; 127. Vertical portion; 128. Connecting portion; 129. Second movable sheet; 13. Movable rod; 131. Pick; 132. Spring; 133. Push rod; 134. Support plate; 14. Laser cutting head; 141. Mounting block. DETAILED DESCRIPTION

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

[0041] like Figure 1-14 As shown, a laser cutting machine for composite muffler processing includes a mounting block 141 and a laser cutting head 14 fixedly mounted on the mounting block 141, and also includes a frame 1, on which are provided:

[0042] The mounting plate 11 and the support plate 134 are arranged in parallel, and 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 are arranged between the mounting plate 11 and the support plate 134, wherein:

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

[0044] Specifically, a groove adapted to the plate is opened on the frame 1, a clamp for fixing the plate is arranged in the groove, the driving rod 112 is specifically a reciprocating screw rod, a through hole adapted to the reciprocating screw rod is opened on the mounting block 141, a motor is arranged inside the mounting plate 11, the driving rod 112 is fixedly installed on the output end of the motor, and a through hole adapted to the guide rod 111 is opened on the mounting block 141.

[0045] In the above technical solution, when cutting, the plate is placed in the groove on the frame 1 and fixed with a clamp, and the laser cutting head 14 works on the first side of the middle part of the plate (with Figure 1The side where the laser cutting head 14 is located is the first side) and the plate is cut at an angle. The motor outputs torque to drive the driving rod 112 to rotate. The driving rod 112 pushes the mounting block 141 to move the laser cutting head 14 along the guide rod 111 from a position close to the mounting plate 11 to a position close to the supporting plate 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 supporting plate 134 to rotate, so that the laser cutting head 14 tilts toward the other side of the plate. The driving rod 112 continues to rotate to drive the laser cutting head 14 from a position close to the supporting plate 134 to a position close to the mounting plate 11, and cuts the plate at an angle to cut a hole in the middle of the plate. The groove with an isosceles triangle cross section is convenient for subsequent re-cutting at the bottom of the groove, and the plate is cut off. The cut plate is then bent into a cylindrical blank, and the inner side of the blank is chamfered to facilitate its cooperation with the disc-shaped plate. The inner and outer welding points of the disc-shaped plate and the blank are not on the same plane. The inner and outer welding points of the conventional cylinder and disc are on the same plane, and the probability of welds is greater; the laser cutting head 14 performs cutting work on both sides of the middle of the plate, and cuts a groove with an isosceles triangle cross section on the plate, which not only facilitates the subsequent welding work of the composite muffler shell, but also reduces the thickness of the plate, making it convenient to cut thicker plates with a lower energy laser cutting machine.

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

[0047] Specifically, a movable frame 12 is slidably disposed on the frame 1 , a mounting shaft 121 is fixedly mounted on the movable rod 13 , and a spring is disposed between the movable frame 12 and the frame 1 .

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

[0049] As another embodiment further provided by the present invention, the mounting plate 11 is equipped for the following three stations:

[0050] At the first station, the laser cutting head 14 cuts the plate obliquely;

[0051] At the second station, the mounting plate 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 the triangular prism-shaped residual material;

[0052] At the third station, the mounting plate 11 rotates in the opposite direction and moves downward so that the laser cutting head 14 faces the bottom of the groove cut at the first two stations.

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

[0054] Furthermore, when working, the mounting plate 11 is located at the first station, the laser cutting head 14 moves and cuts the plate obliquely, then the mounting plate 11 rotates to the second station, the laser cutting head 14 cuts the plate, and cuts a groove with an isosceles triangle cross-section in the middle of the plate, then the mounting plate 11 rotates in the opposite direction so that the laser cutting head 14 moves to a position perpendicular to the plate and then moves downward, so that the laser cutting head 14 penetrates into the groove on the plate, and the laser cutting head 14 cuts the plate vertically 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 plate 11. The tenon rod 118 moves along the guide groove 125 to switch the working position of the mounting plate 11.

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

[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, when cutting, the driving rod 112 is coupled to the mounting shaft 121, and the mounting shaft 121 is restricted by the movable frame 12, so that the mounting disk 11 rotates relative to the mounting shaft 121, so that the tenon rod 118 moves along the arc portion 126, so that the mounting disk 11 moves from the first station to the second station, and then the mounting disk 11 rotates in the opposite direction relative to the mounting shaft 121, and the tenon rod 118 moves to the top of 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 disk 11 enters the third station, and then the mounting disk 11 continues to rotate in the opposite direction, and the tenon rod 118 moves along the connecting portion 128, the mounting disk 11 and the movable frame 12 move up, and the mounting disk 11 gradually returns to the first position.

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

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

[0061] Furthermore, when the mounting plate 11 moves 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, which seals the vertical portion 127, and the tenon rod 118 can move to the second end of the arc portion 126 ( Figure 4 The position of the middle tenon rod 118 is the first end of the arc portion 126). When the mounting plate 11 moves from the second station to the third station, the mounting plate 11 rotates in the opposite direction to drive 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 opens, 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 plate 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 hingedly connected 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 and is located below the vertical portion 127 . The push rod 133 extends to below the plate. A spring is provided between the push rod 133 and the frame 1 . A torsion spring is provided between the second movable sheet 129 and the frame 1 .

[0064] Furthermore, when the mounting plate 11 moves to the third station, the tenon rod 118 is stuck at the bottom of the vertical portion 127, limiting the normal operation of the mounting plate 11, and the laser cutting head 14 cuts the plate; after the plate cutting is completed, the plate is removed from the frame 1, and the push rod 133 is no longer under pressure. The push rod 133 moves upward under the action of the spring, and the push rod 133 pushes the tenon rod 118 to move upward, so that the tenon rod 118 is opposite to the upper end of the connecting portion 128. At this time, the mounting plate 11 continues to rotate in the opposite direction, and the tenon rod 118 moves along the connecting portion 128. The mounting plate 11 and the movable frame 12 move up, and the mounting plate 11 gradually returns to the first position. The tenon rod 118 pushes the second movable piece 129 back to 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 synchronization 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 disk 11, a push rod 115 is slidably arranged on the mounting disk 11, and the mounting block 141 moves to push the push rod 115 to drive the synchronization block 113 to embed into 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 opened on the first sprocket 119, a spring is provided between the push rod 115 and the mounting plate 11, and a spring is provided between the push rod 115, the synchronous block 113 and the driving rod 112.

[0067] Furthermore, when the mounting block 141 approaches the mounting disk 11, the mounting block 141 pushes the top rod 115 to move toward the inside of the mounting disk 11, and the top rod 115 pushes the synchronization block 113 to move. The synchronization block 113 is embedded in the first sprocket 119, and the driving rod 112 drives the first sprocket 119 to rotate through the synchronization block 113, while the second sprocket 122 is restricted by the mounting shaft 121 and cannot rotate, thereby causing the first sprocket 119 to drive the mounting disk 11 to rotate.

[0068] As another embodiment further provided by the present invention, a first gear 114 is disposed on the synchronization block 113 , a slide bar 116 is disposed on the support plate 134 , and the mounting block 141 pushes the slide bar 116 to move the first gear 114 and couple with the mounting shaft 121 .

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

[0070] A movable rod 13 is slidably arranged on the frame 1, and the mounting block 141 reciprocates for a cycle so that the movable rod 13 pushes away the excess material cut off from the plate, a spring is arranged between the movable rod 13 and the frame 1, a spring sheet 132 extending into the frame 1 is arranged on the movable rod 13, a paddle 131 is hinged on the movable rod 13, and a torsion spring is arranged between the paddle 131 and the movable rod 13.

[0071] Furthermore, when performing the cutting work, the plate is placed in the groove on the frame 1 and fixed with a clamp, and the laser cutting head 14 works to cut the plate on the first side (with Figure 1The side where the laser cutting head 14 is located is the first side) to cut the plate in an inclined manner, the motor output torque drives the driving rod 112 to rotate, and the driving rod 112 pushes the mounting block 141 to move the laser cutting head 14 along the guide rod 111 from a position close to the mounting plate 11 to a position close to the supporting plate 134. When the cutting on this side is completed, the mounting block 141 abuts against the slide bar 116 and pushes the slide bar 116 to move inside the supporting plate 134. The slide bar 116 drives the synchronization block 113 and the first gear 114 to move through the traction rope, so that the first gear 114 on the driving rod 112 is meshed 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 plate 11 and the supporting plate 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 plate 11 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. The guide rod 111 pushes the movable rod 13 to move. The spring between the movable rod 13 and the frame 1 accumulates elastic potential energy and the spring leaf 132 is embedded in the frame 1 to temporarily lock the movable rod 13.

[0072] The driving rod 112 continues to rotate, driving 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 cuts the plate at an angle, cutting a groove with an isosceles triangle cross section in the middle of the plate. After the cutting on this side is completed, the driving rod 112 continues to rotate, and the mounting block 141 pushes the top rod 115 to move, and the top rod 115 pushes the synchronous block 113 to move. The synchronous block 113 is embedded in the first sprocket 119, and the driving rod 112 drives the first sprocket 119 to rotate through the synchronous block 113, while the second sprocket 122 is restricted by the mounting shaft 121 and cannot rotate, thereby causing the first sprocket 119 to drive the mounting disk 11 to rotate in the opposite direction, and the movable rod 13 is separated from the guide rod 111, and the spring releases its elastic potential energy. The spring leaf 132 gradually deforms and cannot lock the movable rod 13, and the movable rod 13 is unlocked. The movable rod 13 is pushed to move quickly, and moves to the position of the cut residual material under the action of inertia, the paddle 131 is embedded in the gap between the residual material and the plate and pushes the residual material away, the movable rod 13 gradually stops moving and returns to the initial position under the action of the spring, no longer blocking the groove on 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, 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 plate 11 enters the third station, the tenon rod 118 is stuck at the bottom of the vertical portion 127, limiting the normal operation of the mounting plate 11, the laser cutting head 14 extends into the groove on the plate, and the driving rod 112 continues to rotate to drive the laser cutting head 14 to move and cut the plate.

[0073] After the plate cutting is completed, the plate is removed from the frame 1. At this time, the push rod 133 is no longer under pressure, and the push rod 133 moves upward under the action of the spring. The push rod 133 pushes the tenon rod 118 to move upward, so that the tenon rod 118 is opposite to 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 supporting disk 134 to a position close to the mounting disk 11, and pushes the push rod 115 to move again. The first sprocket 119 is coupled to the mounting shaft 121. At this time, the mounting disk 11 continues to rotate in the opposite direction, and the tenon rod 118 moves along the connecting portion 128. The mounting disk 11 and the movable frame 12 move upward, and the mounting disk 11 gradually returns to the first position. The tenon rod 118 pushes the second movable piece 129 back to 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 plate is then bent into a cylindrical blank, and the inner side of the blank is chamfered to facilitate its cooperation with the disc-shaped plate, and the inner and outer welding points of the disc-shaped plate and the blank are not on the same plane. The inner and outer welding points of the conventional cylinder and disc are on the same plane, and the probability of welds is greater; the laser cutting head 14 performs cutting work on both sides of the middle of the plate, and cuts a groove with an isosceles triangle cross-section on the plate, which not only facilitates the subsequent welding work of the composite muffler shell, but also reduces the thickness of the plate, making it convenient to cut thicker plates with a lower energy laser cutting machine.

[0075] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions 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 composite muffler processing, comprising a mounting block (141) and a laser cutting head (14) fixedly mounted on the mounting block (141), characterized in that: It also includes a frame, on which is arranged: A mounting plate (11) and a supporting plate (134) are arranged in parallel, 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) are arranged between the mounting plate (11) and the supporting plate (134), wherein: The driving rod (112) rotates to make the mounting block (141) reciprocate between the mounting plate (11) and the supporting plate (134), and the mounting block (141) moves to the end of the guide rod (111) so that the driving rod (112) drives the mounting plate (11) and the supporting plate (134) to rotate.

2. A laser cutting machine for composite muffler processing according to claim 1, characterized in that: A mounting shaft (121) for supporting the mounting plate (11) and the support plate (134) is movably arranged on the frame, and the mounting block (141) moves to the end of the guide rod (111) to couple the driving rod (112) with the mounting shaft (121).

3. The laser cutting machine for composite muffler processing according to claim 2 is characterized in that: A movable rod (13) is slidably arranged on the frame, and the mounting block (141) reciprocates for a cycle so that the movable rod (13) pushes away the remaining material cut off from the plate.

4. The laser cutting machine for composite muffler processing according to claim 3 is characterized in that: The mounting plate (11) is equipped for the following three stations: At the first workstation, the laser cutting head (14) cuts the plate obliquely; At the second workstation, the mounting plate (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 residual material; At the third station, the mounting plate (11) rotates in the opposite direction and moves downward so that the laser cutting head (14) faces the bottom of the groove cut at the first two stations.

5. The laser cutting machine for composite muffler processing according to claim 4, characterized in that: A guide groove (125) is provided on the frame, and a tenon rod (118) adapted to the guide groove (125) is provided on the installation plate (11). The tenon rod (118) moves along the guide groove (125) to switch the working position of the installation plate (11).

6. The laser cutting machine for composite muffler processing according to claim 5, characterized in that: The guide groove (125) comprises an arc portion, a vertical portion (127) located inside the middle portion of the arc portion, and a connecting portion (128) connecting the vertical portion (127) and the first end of the arc portion.

7. The laser cutting machine for composite muffler processing according to claim 6, characterized in that: 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 hingedly connected at the connection between the connecting portion (128) and the arc portion.

8. The laser cutting machine for composite muffler processing according to claim 7, characterized in that: The top end of the vertical portion (127) is hinged with a first movable piece (124) that only allows the tenon rod (118) moved by the second end of the arc portion to enter the vertical portion (127).

9. The laser cutting machine for composite muffler processing according to claim 2, characterized in that: 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 disk (11), a push rod (115) is slidably arranged on the mounting disk (11), and the mounting block (141) moves to push the push rod (115) to drive the synchronous block (113) to embed into the first sprocket (119).

10. The laser cutting machine for composite muffler processing according to claim 9, characterized in that: The synchronization block (113) is provided with a first gear (114), the support plate (134) is provided with a slide bar (116), and the mounting block (141) pushes the slide bar (116) to move the first gear (114) and couple it with the mounting shaft (121).

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