Surface strengthening device for tire mold

Abstract

The utility model belongs to the field of tire mold machining, and particularly relates to a tire mold surface strengthening device which comprises a gun body support and a conveying belt, the gun body support is located above the conveying belt, and the front end of the gun body support is fixedly connected with a powder feeder. The hot spray pipe and the ceramic outer pipe are arranged, compressed gas flowing in the ceramic outer pipe can cool the nozzle of the hot spray pipe, and the cooling efficiency of the nozzle is improved through the countercurrent flow heat exchange efficiency, so that the situation that the temperature of sprayed powder at the nozzle is too high due to heating is avoided, the situation of carbon deposition is avoided, and the service life of the nozzle is prolonged. At the moment, the spraying quality of the mold can be improved; and in addition, after spraying, deposited carbon at the bottom of the hot spraying pipe can be cleaned through a scraper, so that the subsequent spraying quality is higher.

Description

Technical Field

[0001] This utility model relates to the field of tire mold processing, specifically a surface strengthening device for tire molds. Background Technology

[0002] After the tire mold is manufactured, in order to improve the surface hardness, wear resistance, corrosion resistance and service life of the mold, and at the same time optimize the demolding performance and production efficiency during the tire molding process, the surface of the mold needs to be strengthened. Common strengthening methods include heat treatment, coating, thermal spraying and laser cladding. Thermal spraying can significantly improve the wear resistance, corrosion resistance, demolding performance and service life of the mold.

[0003] Currently, during the thermal spraying process of molds, powder is sprayed onto the mold surface using a spray gun. However, during thermal spraying, the powder sprayed from the nozzle may overheat and carbonize, causing the spray gun's spray trajectory to deviate. This results in significant fluctuations in the spray thickness, leading to either a thicker or thinner coating at the mold edges, thus reducing the spraying quality. Furthermore, it can cause carbon inclusions on the mold surface, affecting the tire's appearance. Therefore, a surface strengthening device for tire molds is proposed to address these issues. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and avoid the problem of reduced spraying quality due to carbon buildup in the nozzles during thermal spraying, this utility model proposes a surface strengthening device for tire molds.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a surface strengthening device for tire molds, comprising: a gun body support and a conveyor belt, the gun body support being located above the conveyor belt, a powder feeder being fixedly connected to the front end of the gun body support, a hot spray pipe being fixedly connected to the bottom end of the powder feeder, and a ceramic outer tube being fixedly connected to the bottom end of the powder feeder; a cleaning component being disposed on the surface of the bottom of the hot spray pipe; and a cooling component being disposed on the surface of the ceramic outer tube; the cleaning component includes a rotating ring rotatably connected to the bottom end of the hot spray pipe, a groove being provided inside the bottom of the rotating ring, a sliding rod being slidably connected inside the groove, a rotating sleeve I being rotatably connected to the middle surface of the sliding rod, a telescopic structure being fixedly connected to the surface of the rotating sleeve I, a rotating sleeve II being fixedly connected to the side of the telescopic structure away from the rotating sleeve I, a scraper being rotatably connected to the inside of the rotating sleeve II, a threaded rod being rotatably connected to the top end of the telescopic structure near the rotating sleeve II, internal threaded plates being threadedly connected to the front and rear surfaces of the threaded rod, and a telescopic rod being fixedly connected to the bottom end of the internal threaded plate near the telescopic structure.

[0006] Preferably, the thermal spray pipe is located directly above the conveyor belt, and the thermal spray pipe can perform thermal spraying on the mold above the conveyor belt. The ceramic outer tube is located on the outer surface of the thermal spray pipe.

[0007] Preferably, the telescopic structure is composed of two hollow rods and one solid rod. The two hollow rods are fixedly connected to the adjacent sides of rotating sleeve one and rotating sleeve two, respectively. The two ends of the solid rod are slidably connected to the inside of the two solid rods, and the two end faces of the solid rod are fixedly connected to the inner wall of the hollow rod by buffer springs.

[0008] Preferably, the scraper is adapted to contact the inner wall of the hot spray pipe, and the telescopic structure pulls the scraper to contact the inner wall of the hot spray pipe under the action of spring force. At this time, the scraper can clean the carbon deposits on the inner wall of the hot spray pipe.

[0009] Preferably, the end of the telescopic rod away from the internal threaded plate is fixedly connected to the surface of the telescopic structure, and the end of the internal threaded plate away from the telescopic structure is adapted to contact the surface of the scraper. After the two internal threaded plates abut against the inside of the scraper, the position of the scraper can be limited, so that the scraper can stably clean the carbon deposits on the inner wall of the hot spray pipe.

[0010] Preferably, the cooling component includes a connecting pipe fixedly connected to the front side of the bottom of the ceramic outer tube, a threaded sleeve is threadedly connected to the surface of the connecting pipe, a jet pipe is fixedly connected to the front end of the threaded sleeve, a protective sleeve is fitted onto the surface of the jet pipe, a spiral air guide pipe is fixedly connected to the surface of the hot spray pipe, and an air outlet is opened on the surface of the top of the ceramic outer tube.

[0011] Preferably, the connecting pipe and the air outlet are both connected to the inner and outer sides of the ceramic outer pipe, and the protective sleeve is made of ceramic fiber, which can insulate the inside of the jet pipe.

[0012] Preferably, the outlet is oriented towards the outside of the ceramic outer tube, and the gas enters the interior of the ceramic outer tube through the connecting pipe and is then discharged through the outlet. At this time, the gas flows in the opposite direction to the powder inside the hot spray pipe, so that the compressed gas with a lower temperature at the connecting pipe can efficiently absorb heat from the powder with the highest temperature at the bottom of the hot spray pipe, thereby improving the heat exchange efficiency through countercurrent heat exchange.

[0013] The advantages of this utility model are:

[0014] This invention incorporates a thermal spray pipe and a ceramic outer tube. The compressed gas flowing inside the ceramic outer tube cools the nozzle of the thermal spray pipe, and the counter-current heat exchange improves the cooling efficiency at the nozzle, thus preventing the powder at the nozzle from being heated to an excessively high temperature and avoiding carbon buildup. This improves the coating quality of the mold. Furthermore, after coating, the carbon buildup at the bottom of the thermal spray pipe can be cleaned with a scraper, resulting in even higher coating quality in subsequent applications. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the nozzle surface structure of this utility model; Figure 3 This is a schematic cross-sectional view of the bottom of the nozzle of this utility model; Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the cooling component of this utility model.

[0017] In the diagram: 1. Gun body support; 2. Conveyor belt; 31. Powder feeder; 32. Thermal spray pipe; 33. Ceramic outer tube; 4. Cleaning assembly; 41. Rotating ring; 42. Slide groove; 43. Sliding rod; 44. Rotating sleeve one; 45. Telescopic structure; 46. Rotating sleeve two; 47. Scraper; 481. Threaded rod; 482. Internal threaded plate; 483. Telescopic rod; 5. Cooling assembly; 51. Connecting pipe; 52. Threaded sleeve; 53. Jet pipe; 54. Protective sleeve; 55. Spiral air guide pipe; 56. Air outlet. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] The following is in conjunction with the appendix Figure 1-5 To further illustrate this application, an embodiment of this application discloses a surface strengthening device for a tire mold. (Refer to...) Figure 1A surface strengthening device for a tire mold includes: a gun body support 1 and a conveyor belt 2. The gun body support 1 is located above the conveyor belt 2. A powder feeder 31 is fixedly connected to the front end of the gun body support 1. A hot spray pipe 32 is fixedly connected to the bottom end of the powder feeder 31. A ceramic outer tube 33 is fixedly connected to the bottom end of the powder feeder 31. The hot spray pipe 32 is located directly above the conveyor belt 2 and can perform hot spraying on the mold above the conveyor belt 2. The ceramic outer tube 33 is located on the outer surface of the hot spray pipe 32. A cleaning component 4 is disposed on the bottom surface of the hot spray pipe 32. A cooling component 5 is disposed on the surface of the ceramic outer tube 33. (Refer to...) Figures 2-4 The cleaning component 4 includes a rotating ring 41 rotatably connected to the bottom end of the hot spray pipe 32. A groove 42 is formed inside the bottom of the rotating ring 41, and a sliding rod 43 is slidably connected inside the groove 42. A rotating sleeve 44 is rotatably connected to the middle surface of the sliding rod 43. A telescopic structure 45 is fixedly connected to the surface of the rotating sleeve 44. A rotating sleeve 46 is fixedly connected to the side of the telescopic structure 45 away from the rotating sleeve 44. The telescopic structure 45 is composed of two hollow rods and one solid rod. The two hollow rods are fixedly connected to the sides of the rotating sleeve 44 and the rotating sleeve 46 respectively. The two ends of the solid rod are slidably connected to the interiors of the two solid rods. The two end faces of the solid rod are fixedly connected to the inner walls of the hollow rods by buffer springs. A scraper 47 is rotatably connected inside the rotating sleeve 46, and the scraper 47 is adapted to contact the hot spray pipe 32. The inner wall of the hot spray pipe 32 is reached by the telescopic structure 45, which pulls the scraper 47 to contact the inner wall of the hot spray pipe 32 under the action of the spring force. At this time, the scraper 47 can clean the carbon deposits on the inner wall of the hot spray pipe 32. The top of the telescopic structure 45 near the rotating sleeve 46 is rotatably connected to a threaded rod 481. The front and rear surfaces of the threaded rod 481 are threaded with internal threaded plates 482. The bottom of the internal threaded plate 482 near the telescopic structure 45 is fixedly connected to a telescopic rod 483. The end of the telescopic rod 483 away from the internal threaded plate 482 is fixedly connected to the surface of the telescopic structure 45. The end of the internal threaded plate 482 away from the telescopic structure 45 is adapted to contact the surface of the scraper 47. After the two internal threaded plates 482 abut against the inside of the scraper 47, the position of the scraper 47 can be limited, so that the scraper 47 can stably clean the carbon deposits on the inner wall of the hot spray pipe 32.

[0020] Reference Figure 2 and Figure 5The cooling component 5 includes a connecting pipe 51 fixedly connected to the front side of the bottom of the ceramic outer tube 33. A threaded sleeve 52 is threadedly connected to the surface of the connecting pipe 51. A jet pipe 53 is fixedly connected to the front end of the threaded sleeve 52. A protective sleeve 54 is fitted onto the surface of the jet pipe 53. A spiral air guide pipe 55 is fixedly connected to the surface of the hot spray pipe 32. An air outlet 56 is opened on the top surface of the ceramic outer tube 33. Both the connecting pipe 51 and the air outlet 56 connect the inner and outer sides of the ceramic outer tube 33. The protective sleeve 54 is made of ceramic fiber and can insulate the inside of the jet pipe 53. The air outlet 56 opens towards the outside of the ceramic outer tube 33 and faces the direction close to the ceramic outer tube 33. Gas enters the inside of the ceramic outer tube 33 through the connecting pipe 51 and is then discharged through the air outlet 56. At this time, the gas flows in the opposite direction to the powder inside the hot spray pipe 32, so that the compressed gas with a lower temperature at the connecting pipe 51 can efficiently absorb heat from the powder with the highest temperature at the bottom of the hot spray pipe 32, thereby improving the heat exchange efficiency through countercurrent heat exchange.

[0021] Working principle: The operator attaches the end of the jet pipe 53 away from the threaded sleeve 52 to the air outlet end of the jet device, and at this time the scraper 47 is attached to the outer wall of the rotating ring 41.

[0022] The tire mold can be transported to the area below the hot spray pipe 32 via the conveyor belt 2. At this point, powder can be sprayed downwards through the powder feeder 31 and the hot spray pipe 32, and then sprayed onto the surface of the mold by thermal spraying. Meanwhile, compressed gas can be injected into the interior of the jet pipe 53 through the jetting device. The compressed gas enters the interior of the ceramic outer tube 33 through the connecting pipe 51. That is, the compressed gas first enters the interior of the hot spray pipe 32 near the part of the hot spray pipe 32 where the powder is sprayed. At this point, the compressed gas with a lower latitude can exchange heat with the bottom of the hot spray pipe 32 where the temperature is the highest. After that, the compressed gas flows through the spiral air guide pipe 55 towards the direction near the air outlet 56, and then is discharged through the air outlet 56. At this point, the surface of the hot spray pipe 32 is cooled by the compressed gas, so as to avoid the internal temperature of the hot spray pipe 32 being too high and causing the powder to be overheated, thereby avoiding carbon buildup at the bottom of the hot spray pipe 32.

[0023] After the thermal spraying is completed, the operator can rotate the scraper 47 and push the sliding rod 43 to slide inside the groove 42 until the sliding rod 43 moves to a position close to the inner wall of the thermal spray pipe 32. At this time, the scraper 47 can be rotated to make it fit against the inner wall of the thermal spray pipe 32. Then, under the elastic force of the spring inside the telescopic structure 45, the scraper 47 is kept in contact with the inner wall of the thermal spray pipe 32. Then, the threaded rod 481 is manually rotated. Since the telescopic rod 483 is fixedly connected between the threaded rod 481 and the telescopic structure 45, the threaded rod 481 drives the threaded internal thread plate 482 to move away from the telescopic structure 45 until the internal thread plate 482 abuts against the surface of the scraper 47. Therefore, the scraper 47 is also restricted and cannot rotate. Then, the rotating ring 41 can be manually rotated. At this time, the rotating ring 41 drives the scraper 47 to clean the carbon deposits on the inner wall of the bottom of the thermal spray pipe 32.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A surface strengthening device for a tire mold, characterized in that: include: Gun body support (1) and conveyor belt (2), the gun body support (1) is located above the conveyor belt (2), the front end of the gun body support (1) is fixedly connected to a powder feeder (31), the bottom end of the powder feeder (31) is fixedly connected to a hot spray pipe (32), and the bottom end of the powder feeder (31) is fixedly connected to a ceramic outer tube (33); cleaning assembly (4), the cleaning assembly (4) is set on the surface of the bottom of the hot spray pipe (32); the cleaning assembly (4) includes a rotating ring (41) rotatably connected to the bottom end of the hot spray pipe (32), the bottom of the rotating ring (41) is provided with a groove (42), the inside of the groove (42) is slidably connected to a sliding rod (43), and the surface of the middle part of the sliding rod (43) is rotatably connected to the groove (42). A rotating sleeve (44) is attached, and a telescopic structure (45) is fixedly connected to the surface of the rotating sleeve (44). A rotating sleeve (46) is fixedly connected to the side of the telescopic structure (45) away from the rotating sleeve (44). A scraper (47) is rotatably connected inside the rotating sleeve (46). A threaded rod (481) is rotatably connected to the top of the telescopic structure (45) near the rotating sleeve (46). An internal thread plate (482) is threadedly connected to both the front and rear surfaces of the threaded rod (481). A telescopic rod (483) is fixedly connected to the bottom of the internal thread plate (482) near the telescopic structure (45). A cooling component (5) is disposed on the surface of the ceramic outer tube (33).

2. A surface strengthening device for a tire mold according to claim 1, characterized in that: The hot spray pipe (32) is located directly above the conveyor belt (2), and the ceramic outer tube (33) is located on the outer surface of the hot spray pipe (32).

3. The surface strengthening device for a tire mold according to claim 1, characterized in that: The telescopic structure (45) is composed of two hollow rods and one solid rod. The two hollow rods are fixedly connected to the side of the rotating sleeve one (44) and rotating sleeve two (46) respectively. The two ends of the solid rod are slidably connected to the inside of the two solid rods respectively. The two end faces of the solid rod are fixedly connected to the inner wall of the hollow rod by buffer springs respectively.

4. A surface strengthening device for a tire mold according to claim 1, wherein: The scraper (47) is adapted to contact the inner wall of the hot spray pipe (32).

5. A surface strengthening device for a tire mold as defined in claim 1, wherein: The end of the telescopic rod (483) away from the internal thread plate (482) is fixedly connected to the surface of the telescopic structure (45), and the end of the internal thread plate (482) away from the telescopic structure (45) is adapted to contact the surface of the scraper (47).

6. The surface strengthening device for a tire mold according to claim 1, characterized in that: The cooling component (5) includes a connecting pipe (51) fixedly connected to the front side of the bottom of the ceramic outer tube (33). The surface of the connecting pipe (51) is threaded with a threaded sleeve (52). The front end of the threaded sleeve (52) is fixedly connected with a jet pipe (53). The surface of the jet pipe (53) is fitted with a protective sleeve (54). The surface of the hot spray pipe (32) is fixedly connected with a spiral air guide pipe (55). An air outlet (56) is opened on the top surface of the ceramic outer tube (33).

7. A surface strengthening device for a tire mold according to claim 6, wherein: The connecting pipe (51) and the air outlet (56) are both connected to the inner and outer sides of the ceramic outer tube (33), and the protective sleeve (54) is made of ceramic fiber.

8. A surface strengthening device for a tire mold according to claim 6, wherein: The air outlet (56) opens to a side of the ceramic outer tube (33) facing a direction close to the ceramic outer tube (33).

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