Laser engraving device and laser engraving method for tire mold side plate

Abstract

The invention relates to the technical field of laser engraving, and provides a tire mold side plate laser engraving device and method.The tire mold side plate laser engraving device comprises a machining base, and a laser engraving equipment body is arranged at the top of the machining base; the machining device comprises a machining base and further comprises two arc-shaped clamping frames, an arc-shaped sliding groove body and a closed shading assembly, a position adjusting mechanism is arranged on one side of the arc-shaped clamping frames and the machining base, the arc-shaped sliding groove body is fixedly connected to the top of the arc-shaped clamping frames, and a plurality of adjusting sliding frames are slidably connected to the arc-shaped sliding groove body. By means of the technical scheme, the problem that it is difficult to guarantee that the space between a laser engraving area and the external environment is kept closed when laser engraving equipment is used for engraving a large tire side plate in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser engraving, and specifically, to a laser engraving device and a laser engraving method for a side plate of a tire mold. Background Art

[0002] A tire mold is a customized mold used for vulcanization operations on various tires in the prior art. By using a vulcanization device in cooperation with the tire mold, the forming operation of the tire can be completed. The tire mold has different types, including a split mold, which consists of a pattern ring, a mold sleeve, and upper and lower side plates. Assembling the pattern ring, the mold sleeve, and the upper and lower side plates together can complete the vulcanization forming operation of the tire. The upper and lower side plates of the tire mold correspond to the outer shape of the vulcanized tire. Therefore, before the side plates of the tire mold are used, generally, a machining center is required to perform cutting on the side plates to complete the machining of the outer shape of the side plates. The tool used in the machining center is very fine and is prone to tool breakage. Moreover, the texture lines of the side plates of the tire mold can only be machined to a size of 0.3 mm. If it is smaller, it is difficult to ensure the machining effect. Therefore, in the prior art, a laser engraving device is used to engrave the precise parts of the side plates.

[0003] However, the output area of the laser emission device of the laser engraving device in the prior art is small, and the volume of the tire side plate is large. Therefore, it is often necessary to continuously move the tire side plate at the bottom of the laser emission device to adjust the engraving position. This results in the processing area of the laser engraving device being in communication with the external environment during use. This usage method not only easily causes the laser beam to be affected by the external environment after emission, but also easily causes damage to other things in the external environment by the laser beam, which is not conducive to the normal and safe use of the laser engraving device. Summary of the Invention

[0004] The present invention provides a laser engraving device and a laser engraving method for a side plate of a tire mold, which solve the problem that it is difficult to ensure the enclosure between the laser engraving area and the external environment when the laser engraving device in the prior art engraves a relatively large tire side plate.

[0005] The technical solution of the present invention is as follows: A laser engraving device for a side plate of a tire mold includes a processing base, and a laser engraving device body is arranged on the top of the processing base. It further includes:

[0006] An arc-shaped clamping frame, the number of the arc-shaped clamping frames is set to two, and a position adjustment mechanism is arranged between the arc-shaped clamping frame and one side of the processing base;

[0007] An arc-shaped sliding groove body, the arc-shaped sliding groove body is fixedly connected to the top of the arc-shaped clamping frame, and a plurality of adjusting sliding frames are slidably connected to the arc-shaped sliding groove body;

[0008] A closed light-shielding component, a plurality of the closed light-shielding components are slidably arranged on the adjusting sliding frame, the closed light-shielding component is used to close the moving path of the laser beam, and the bottom of the closed light-shielding component is communicated with a bottom closing component.

[0009] In order to adjust the position of the arc-shaped clamping frame, further, the position adjusting mechanism includes a rotating groove frame, a moving support and a transverse moving component. The rotating groove frame is arranged on one side of the processing base. A transmission lead screw is rotatably connected in the rotating groove frame. A motor driving device is arranged on the rotating groove frame, and the output end of the motor driving device is fixedly connected with the transmission lead screw. The moving support is slidably connected in the rotating groove frame, the moving support is threadedly connected with the transmission lead screw, and the transverse moving component is arranged between both sides of the top of the moving support and the arc-shaped clamping frame.

[0010] In order to drive the arc-shaped clamping frame to move transversely, further, the transverse moving component includes a sliding through groove, a bent sliding piece and a driving electric cylinder. Sliding through grooves are respectively arranged on both sides of the top of the moving support. The bent sliding piece is slidably connected in the sliding through groove, and the bent sliding piece is fixedly connected with the arc-shaped clamping frame. The driving electric cylinder is arranged on the moving support, and the output end of the driving electric cylinder is fixedly connected with the bent sliding piece.

[0011] In order to enable the adjusting sliding frame to slide on the arc-shaped sliding groove body, further, an arc-shaped sliding rail is fixedly connected to the inner bottom wall of the arc-shaped sliding groove body, and arc-shaped sliding grooves are respectively arranged on both inner side walls of the arc-shaped sliding rail.

[0012] In order to support the bottom of the clamped side plate, further, a plurality of support rods are fixedly connected to the inner arc surface of the arc-shaped clamping frame.

[0013] In order to mark the moving position of the adjusting sliding frame, further, an arc-shaped mounting strip is fixedly connected to the outer arc surface of the arc-shaped sliding rail, and a plurality of marking points are arranged on the arc-shaped mounting strip.

[0014] In order to facilitate the installation of the adjusting sliding frame on the arc-shaped sliding groove body, further, a clamp-type sliding seat is fixedly connected to one side of the adjusting sliding frame. Sliding protrusions are respectively arranged on both sides of the clamp-type sliding seat. The sliding protrusions are located in the arc-shaped sliding grooves, and the bottom of the sliding protrusions is provided with an arc-shaped chamfer.

[0015] In order to block the moving path of the laser beam, further, the enclosed light-shielding assembly includes a rectangular sliding member, a metal sliding cylinder, and a light-shielding cylinder. The rectangular sliding member is slidably connected within the adjusting sliding frame. The metal sliding cylinder is slidably disposed within the rectangular sliding member. The light-shielding cylinder is located within the metal sliding cylinder. A connecting bar is fixedly connected between the light-shielding cylinder and the metal sliding cylinder. A water injection chamber is formed between the outer wall of the light-shielding cylinder and the inner wall of the metal sliding cylinder.

[0016] In order to keep the inner wall of the side plate closed from the external environment, further, the bottom closing assembly includes a flexible water storage sleeve. A water storage chamber is provided within the flexible water storage sleeve. The water storage chamber communicates with the water injection chamber.

[0017] A laser engraving method for a side plate of a tire mold includes the following steps:

[0018] Step 1, clamping the mold side plate: Move the tire mold side plate after machining to between the two arc-shaped clamping frames, and then start the driving electric cylinder to push the bent sliding member to move the arc-shaped clamping frames, so that the mold side plate is clamped between the two arc-shaped clamping frames;

[0019] Step 2, moving the fixture side plate: Start the motor driving device to drive the transmission lead screw to rotate, so that the moving support drives the clamped side plate to move upward to the upper side of the processing base.

[0020] Step 3, marking the engraving area: Mark the position on the mold side plate that needs to be laser engraved. After marking the mold side plate, the identification points can be recorded with the marked positions on the mold side plate, and the identification points can be used to judge the straight-line position of the area that needs to be laser engraved. According to the laser engraving area of the marked side plate, adjust the position of the adjusting sliding frame on the arc-shaped sliding groove body, and new adjusting sliding frames can be added to the arc-shaped sliding groove body through the clamp-type sliding seat.

[0021] Step 4, blocking the laser beam: Move the rectangular sliding member to move the metal sliding cylinder and the light-shielding cylinder to the area where laser engraving is performed on the side plate surface, so that the laser passes through the light-shielding cylinder and contacts the side plate surface. Protect the laser beam through the light-shielding cylinder, and then inject water into the water storage chamber through the water injection chamber, so that the bottom of the flexible water storage sleeve deforms to fit more closely with the side plate, and block the laser beam from the outside.

[0022] The working principle and beneficial effects of the present invention are as follows:

[0023] In the present invention, in actual use, in order to prevent the external environment from affecting the normal use of the laser beam after the laser beam is emitted, after the surface of the side plate is cut, in order to perform a more precise laser engraving operation on a certain area of ​​the side plate, the position adjustment mechanism is used to drive the arc clamping frame to move, the side plate is clamped between the two arc clamping frames, the position of the adjustment sliding frame on the arc sliding groove body is adjusted, and the position of the closed shading component on the adjustment sliding frame is adjusted to move the closed shading component to the position on the side plate where laser engraving is required, and then the closed shading component is moved longitudinally on the adjustment sliding frame to make the bottom The closing component contacts the side wall of the side panel to ensure the closing of the moving path of the laser beam. The above method is used to set a closed shading component and a bottom closing component on multiple engraving areas of the side panel, and then one of the areas of the side panel that needs to be laser engraved is moved to the bottom of the laser engraving device body. The clamped side panel is moved under the action of the position adjustment mechanism, so that the multiple engraving areas of the side panel are laser engraved in turn. During the use of the present invention, not only can the laser beam emitted by the laser engraving device body be engraved while ensuring the isolation between the external environment and the laser beam, but the use of the bottom closing component can also prevent splashing problems during the engraving process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0027] Figure 3 It is a schematic diagram of the structure of the arc-shaped clamping frame, the arc-shaped sliding trough, the adjusting sliding frame and the metal sliding cylinder in the present invention;

[0028] Figure 4 It is a partial cross-sectional structural diagram of the coordination of the arc-shaped sliding trough body, the adjustable sliding frame, the arc-shaped sliding rail and the clamp-type sliding seat in the present invention;

[0029] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at point A in the middle;

[0030] Figure 6 It is a schematic diagram of the planar structure of the rectangular sliding member, the metal sliding cylinder, the light shielding cylinder and the water injection chamber in the present invention;

[0031] Figure 7This is a schematic structural view of the partial section of the metal sliding cylinder, light-shielding cylinder, water injection chamber, flexible water storage sleeve and water storage chamber in the present invention.

[0032] In the figure: 1, processing base; 2, laser engraving equipment body; 3, arc-shaped clamping frame; 4, arc-shaped sliding groove body; 5, adjusting sliding frame; 6, rotating groove frame; 7, transmission lead screw; 8, motor driving equipment; 9, moving support; 10, sliding through groove; 11, bending sliding part; 12, driving electric cylinder; 13, arc-shaped slide rail; 14, arc-shaped sliding groove; 15, support rod; 16, arc-shaped mounting strip; 17, marking point; 18, clamp-type sliding seat; 19, sliding protrusion; 20, rectangular sliding part; 21, metal sliding cylinder; 22, light-shielding cylinder; 23, water injection chamber; 24, flexible water storage sleeve; 25, water storage chamber. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0034] Embodiment 1, as Figures 1 to 7 shown, this embodiment proposes a laser engraving device for the side plate of a tire mold, including a processing base 1. A laser engraving equipment body 2 is arranged on the top of the processing base 1. The laser engraving equipment body 2 is an existing technical equipment used for laser engraving the side plate of the mold in real life and is a well-known existing technical equipment in the art.

[0035] It also includes two arc-shaped clamping frames 3. A plurality of support rods 15 are fixedly connected to the inner arc surface of the arc-shaped clamping frames 3. A friction arc surface is arranged on the inner arc surface of the arc-shaped clamping frames 3. The side plate of the tire mold can be clamped by using the friction arc surface, and the bottom of the mold side plate can be supported by using the support rods 15.

[0036] An arc-shaped clamping frame 3 and one side of the processing base 1 are provided with a position adjustment mechanism. The position adjustment mechanism includes a rotating groove frame 6, a moving support 9, and a transverse movement assembly. The rotating groove frame 6 is arranged on one side of the processing base 1. A transmission lead screw 7 is rotatably connected in the rotating groove frame 6. An electric motor driving device 8 is arranged on the rotating groove frame 6, and the output end of the electric motor driving device 8 is fixedly connected to the transmission lead screw 7. The moving support 9 is slidably connected in the rotating groove frame 6, and the moving support 9 is threadedly connected to the transmission lead screw 7. Transverse movement assemblies are arranged between the top sides of the moving support 9 and the arc-shaped clamping frame 3. When it is necessary to laterally move the position of the arc-shaped clamping frame 3, start the electric motor driving device 8 to drive the transmission lead screw 7 to rotate, so that the transmission lead screw 7 drives the moving support 9 to move in the rotating groove frame 6 to adjust the position of the arc-shaped clamping frame 3. The moving support 9 is designed in a concave shape, which is convenient for installing transverse movement assemblies on both sides of the top of the moving support 9;

[0037] The transverse movement assembly includes a sliding through groove 10, a bent sliding member 11, and a driving electric cylinder 12. Sliding through grooves 10 are opened on both sides of the top of the moving support 9. A bent sliding member 11 is slidably connected in the sliding through groove 10, and the bent sliding member 11 is fixedly connected to the arc-shaped clamping frame 3. The driving electric cylinder 12 is arranged on the moving support 9, and the output end of the driving electric cylinder 12 is fixedly connected to the bent sliding member 11. When it is necessary to move the two arc-shaped clamping frames 3 relative to each other, start the driving electric cylinder 12 to drive the bent sliding member 11 to move in the sliding through groove 10, so that the two arc-shaped clamping frames 3 clamp the mold side plate. The bent sliding member 11 is designed in a Z shape, which can not only keep a sufficient sliding connection area between the bottom of the bent sliding member 11 and the sliding through groove 10, but also enable the top of the bent sliding member 11 to have a sufficient moving distance for the arc-shaped clamping frame 3.

[0038] An arc-shaped sliding groove body 4 is fixedly connected to the top of the arc-shaped clamping frame 3. A plurality of adjusting sliding frames 5 are slidably connected to the arc-shaped sliding groove body 4. An arc-shaped sliding rail 13 is fixedly connected to the inner bottom wall of the arc-shaped sliding groove body 4. Arc-shaped sliding grooves 14 are opened on both inner side walls of the arc-shaped sliding rail 13, so that the adjusting sliding frame 5 can move along the arc-shaped sliding area of the arc-shaped sliding groove body 4;

[0039] An arc-shaped mounting strip 16 is fixedly connected to the outer arc surface of the arc-shaped sliding rail 13. A plurality of marking points 17 are arranged on the arc-shaped mounting strip 16. After the mold side plate is subjected to cutting operation, people will mark the position on the mold side plate where laser engraving operation needs to be performed. After the mold side plate is marked, the marking points 17 can be recorded with the marked positions on the mold side plate, and the marking points 17 are used to judge the straight line position of the area where laser engraving is required, which is convenient for later moving the adjusting sliding frame 5 to the straight line position corresponding to the position of the side plate laser engraving.

[0040] One side of the adjusting sliding frame 5 is fixedly connected with a clamp-type sliding seat 18. Sliding protrusions 19 are arranged on both sides of the clamp-type sliding seat 18. The sliding protrusions 19 are located in the arc-shaped sliding grooves 14. The bottom of the sliding protrusions 19 is provided with an arc-shaped chamfer. Since there are many areas on the side plate that may need laser engraving, and in the present invention, multiple adjusting sliding frames 5 can be installed on the arc-shaped sliding groove body 4. The clamp-type sliding seat 18 can be moved into the arc-shaped slide rail 13. The clamp-type sliding seat 18 has the characteristic of being deformable towards the middle area, so that the clamp-type sliding seat 18 can be smoothly squeezed into the arc-shaped slide rail 13, and the sliding protrusions 19 enter the arc-shaped sliding grooves 14, enabling the clamp-type sliding seat 18 to slide in the arc-shaped slide rail 13, thereby adjusting the position of the adjusting sliding frame 5.

[0041] A plurality of closed light-shielding components are slidably arranged on the adjusting sliding frame 5. The closed light-shielding components are used to enclose the moving path of the laser beam. The closed light-shielding components include a rectangular sliding member 20, a metal sliding cylinder body 21, and a light-shielding cylinder body 22. The rectangular sliding member 20 is slidably connected in the adjusting sliding frame 5. A metal sliding cylinder body 21 is slidably arranged in the rectangular sliding member 20. The light-shielding cylinder body 22 is located in the metal sliding cylinder body 21. A connecting strip is fixedly connected between the light-shielding cylinder body 22 and the metal sliding cylinder body 21. A water injection chamber 23 is formed between the outer wall of the light-shielding cylinder body 22 and the inner wall of the metal sliding cylinder body 21. When the laser engraving device body 2 performs laser engraving on the corresponding area of the side plate, first move the rectangular sliding member 20 to move the metal sliding cylinder body 21 and the light-shielding cylinder body 22 to the area where laser engraving is performed on the side plate surface, so that the laser passes through the light-shielding cylinder body 22 and contacts the side plate surface, protecting the laser beam through the light-shielding cylinder body 22.

[0042] The bottom of the closed light-shielding component is communicated with a bottom closing component. The bottom closing component includes a flexible water storage sleeve 24. A water storage chamber 25 is arranged in the flexible water storage sleeve 24. The water storage chamber 25 is communicated with the water injection chamber 23. The flexible water storage sleeve 24 is closely attached to the bottom end of the side plate. By injecting water into the water storage chamber 25 through the water injection chamber 23, the bottom of the flexible water storage sleeve 24 deforms to fit more closely with the side plate.

[0043] The working principle of the laser engraving device for the side plate of the tire mold:

[0044] First, move the side plate of the tire mold after cutting processing between the two arc-shaped clamping frames 3. Then start the driving electric cylinder 12 to push the bending sliding member 11 to move the arc-shaped clamping frames 3, so that the mold side plate is clamped between the two arc-shaped clamping frames 3. Then start the motor driving device 8 to drive the transmission lead screw 7 to rotate, so that the moving support 9 drives the clamped side plate to move upward to the upper side of the processing base 1.

[0045] According to the laser-engraved area of the marked side plate, adjust the position of the adjusting sliding frame 5 on the arc-shaped sliding groove body 4, and new adjusting sliding frames 5 can be added to the arc-shaped sliding groove body 4 through the clamp-type sliding seat 18. Then move the rectangular sliding member 20 to move the metal sliding cylinder body 21 and the light-shielding cylinder body 22 to the area on the side plate surface where laser engraving is performed, so that the laser passes through the light-shielding cylinder body 22 and contacts the side plate surface. Protect the laser beam through the light-shielding cylinder body 22, and then inject water into the water storage chamber 25 through the water injection chamber 23 to make the bottom of the flexible water storage sleeve 24 deform to fit more closely with the side plate, and cut off the laser beam from the outside world.

[0046] Embodiment 2, based on a laser engraving device for a side plate of a tire mold, the present invention also proposes a laser engraving method for a side plate of a tire mold, which specifically includes the following steps:

[0047] Step 1, clamp the mold side plate: Move the side plate of the tire mold after machining between the two arc-shaped clamping frames 3, and then start the driving electric cylinder 12 to push the bent sliding member 11 to move the arc-shaped clamping frames 3, so that the mold side plate is clamped between the two arc-shaped clamping frames 3;

[0048] Step 2, move the fixture side plate: Start the motor driving device 8 to drive the transmission lead screw 7 to rotate, so that the moving support 9 drives the clamped side plate to move upward to the upper side of the processing base 1.

[0049] Step 3, mark the engraving area: Mark the position on the mold side plate that needs to be laser engraved. After marking the mold side plate, the identification point 17 can record the marked position on the mold side plate, and use the identification point 17 to judge the straight-line position of the area that needs to be laser engraved. According to the laser-engraved area of the marked side plate, adjust the position of the adjusting sliding frame 5 on the arc-shaped sliding groove body 4, and new adjusting sliding frames 5 can be added to the arc-shaped sliding groove body 4 through the clamp-type sliding seat 18.

[0050] Step 4, cut off the laser beam: Move the rectangular sliding member 20 to move the metal sliding cylinder body 21 and the light-shielding cylinder body 22 to the area on the side plate surface where laser engraving is performed, so that the laser passes through the light-shielding cylinder body 22 and contacts the side plate surface. Protect the laser beam through the light-shielding cylinder body 22, and then inject water into the water storage chamber 25 through the water injection chamber 23 to make the bottom of the flexible water storage sleeve 24 deform to fit more closely with the side plate, and cut off the laser beam from the outside world.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser engraving device for a tire mold side plate, comprising a processing base (1), a laser engraving device body (2) being arranged on the top of the processing base (1), characterized in that: Also includes: An arc-shaped clamping frame (3), the number of the arc-shaped clamping frames (3) is set to two, and a position adjustment mechanism is provided on one side of the arc-shaped clamping frame (3) and the processing base (1); An arc-shaped sliding groove body (4), the top of the arc-shaped clamping frame (3) is fixedly connected to the arc-shaped sliding groove body (4), and a plurality of adjustment sliding frames (5) are slidably connected to the arc-shaped sliding groove body (4); A closed shading component, wherein a plurality of the closed shading components are slidably arranged on the adjusting sliding frame (5), the closed shading components are used to close the moving path of the laser light beam, and the bottom of the closed shading component is connected to a bottom closing component.

2. The laser engraving device for a tire mold side plate according to claim 1, characterized in that: The position adjustment mechanism comprises: A rotating groove frame (6), the rotating groove frame (6) being arranged on one side of the processing base (1), a transmission screw (7) being rotatably connected inside the rotating groove frame (6), a motor drive device (8) being arranged on the rotating groove frame (6), and an output end of the motor drive device (8) being fixedly connected to the transmission screw (7); A movable support (9), wherein the movable support (9) is slidably connected in the rotating groove frame (6), and the movable support (9) is threadedly connected to the transmission screw (7); A transverse movement assembly is provided between the top sides of the movable support (9) and the arc-shaped clamping frame (3).

3. The laser engraving device for a tire mold side plate according to claim 2, characterized in that: The traverse assembly comprises: A sliding through groove (10), wherein the sliding through groove (10) is provided on both sides of the top of the movable support (9); A bending sliding member (11), wherein the bending sliding member (11) is slidably connected in the sliding through groove (10), and the bending sliding member (11) is fixedly connected to the arc-shaped clamping frame (3); A driving electric cylinder (12), wherein the driving electric cylinder (12) is arranged on the movable support (9), and an output end of the driving electric cylinder (12) is fixedly connected to the bending sliding member (11).

4. The laser engraving device for a tire mold side plate according to claim 3, characterized in that: An arc-shaped slide rail (13) is fixedly connected to the inner bottom wall of the arc-shaped slide groove body (4), and arc-shaped slide grooves (14) are provided on the inner walls on both sides of the arc-shaped slide rail (13).

5. The laser engraving device for a tire mold side plate according to claim 4, characterized in that: A plurality of support rods (15) are fixedly connected to the inner arc surface of the arc-shaped clamping frame (3).

6. The laser engraving device for the side plate of a tire mold according to claim 5, characterized in that: An arc-shaped installation strip (16) is fixedly connected to the outer arc surface of the arc-shaped slide rail (13), and a plurality of marking points (17) are arranged on the arc-shaped installation strip (16).

7. The laser engraving device for a tire mold side plate according to claim 6, characterized in that: A clamp-type sliding seat (18) is fixedly connected to one side of the adjusting sliding frame (5), and sliding protrusions (19) are arranged on both sides of the clamp-type sliding seat (18). The sliding protrusions (19) are located in the arc-shaped sliding groove (14), and the bottom of the sliding protrusions (19) is provided with an arc-shaped chamfer.

8. The laser engraving device for a tire mold side plate according to claim 7, characterized in that: The enclosed shading component comprises: A rectangular sliding member (20), wherein the adjusting sliding frame (5) is slidably connected with the rectangular sliding member (20); A metal sliding cylinder (21), wherein the metal sliding cylinder (21) is slidably disposed in the rectangular sliding member (20); A light-shielding cylinder (22), the light-shielding cylinder (22) is located inside the metal sliding cylinder (21), a connecting strip is fixedly connected between the light-shielding cylinder (22) and the metal sliding cylinder (21), and a water injection chamber (23) is formed between the outer wall of the light-shielding cylinder (22) and the inner wall of the metal sliding cylinder (21).

9. The laser engraving device for the side plate of a tire mold according to claim 8, characterized in that: The bottom closure assembly comprises: A flexible water storage sleeve (24), wherein a water storage chamber (25) is arranged inside the flexible water storage sleeve (24), and the water storage chamber (25) is communicated with the water injection chamber (23).

10. A method for laser engraving a tire mold side plate, using the laser engraving device for a tire mold side plate according to claim 9, characterized in that: The following steps are involved: Step 1, clamping the mold side plate: moving the tire mold side plate that has been cut to between the two arc-shaped clamping frames (3), then starting the driving electric cylinder (12) to push the bending slide (11) to move the arc-shaped clamping frame (3), so that the mold side plate is clamped between the two arc-shaped clamping frames (3); Step 2: Moving the side plate of the fixture: starting the motor drive device (8) to drive the transmission screw (7) to rotate, so that the movable support (9) drives the clamped side plate to move toward the upper side of the processing base (1); Step 3, marking the engraving area: marking the position on the mold side plate where the laser engraving operation is required, and after marking the mold side plate, the marking point (17) and the marking position on the mold side plate can be recorded, so that the marking point (17) can be used to determine the linear position of the area where the laser engraving is required, and the position of the adjusting sliding frame (5) on the arc-shaped sliding groove body (4) can be adjusted according to the marked side plate laser engraving area, and a new adjusting sliding frame (5) can be added to the arc-shaped sliding groove body (4) through the clamping sliding seat (18); Step 4, blocking the laser beam: move the rectangular sliding member (20), move the metal sliding cylinder (21) and the light-shielding cylinder (22) to the area on the side panel surface where laser engraving is performed, so that the laser passes through the light-shielding cylinder (22) and contacts the side panel surface, and the laser beam is protected by the light-shielding cylinder (22), and then water is injected into the water storage chamber (25) through the water injection chamber (23), so that the bottom of the flexible water storage sleeve (24) is deformed to fit more closely with the side panel, thereby blocking the laser beam from the outside world.

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