Tire mold pattern block grinding tool

Abstract

This invention belongs to the field of tire mold technology and discloses a grinding fixture for tire mold tread blocks, including a grinding table and a movable mold placed on top of it. A clamping assembly located outside the movable mold is provided on the top of the grinding table. An adapter assembly is embedded in the middle of the grinding table. A telescopic rod is fixedly installed on the upper end of the adapter assembly. The output end of the telescopic rod is fixedly connected to a grinding assembly located inside the movable mold. Under the constraint of the upper side of the adapter assembly, the movable mold is clamped and fixed to the top of the grinding table by the clamping assembly. Due to the design of the grinding assembly, with the cooperation of the adapter assembly and other components, it is easy to control the continuous directional movement of the grinding assembly, thereby achieving a continuous and precise grinding effect. Furthermore, with the cooperation of the grinding frame and other components, it ensures that the sandblasting nozzle can only precisely sandblast and grind the protrusions, without grinding areas outside the protrusions, thus improving grinding accuracy.

Description

Technical Field

[0001] This invention belongs to the field of tire mold technology, specifically a tire mold tread block grinding tool. Background Technology

[0002] The manufacturing process of tire molds is very complex, with many steps and a wide variety of mold components. Among them, the tread block component is a very important part of tire molds. The appearance quality of the tread block is the most important component to ensure the appearance of the tire. Therefore, ensuring the appearance quality of the tread block is of great significance to both mold manufacturers and tire manufacturers.

[0003] The tread blocks and protrusions within the concave surface of a tire mold correspond to the grooves on the tire surface. Therefore, the smoothness of the tread block surface determines the quality of the tire surface grooves. However, existing grinding fixtures for tire mold tread blocks often rely on manual grinding, which is not only inefficient but also results in insufficient grinding uniformity. Even with automated grinding machines, while ensuring grinding quality, they can only grind individual tread blocks. To grind another tread block, the operator must manually change the grinding head and position it on the movable mold. This necessitates repeated feeding, fixing, grinding, and unloading of each tread block, significantly limiting grinding efficiency. Furthermore, repeated feeding and fixing can lead to error accumulation, ultimately reducing the overall grinding quality of the movable mold and thus compromising the quality of automated grinding. Therefore, a new grinding fixture for tire mold tread blocks needs to be developed to address the problems existing in current technologies. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a grinding fixture for tire mold tread blocks, which has the advantages of automated, efficient grinding and good results.

[0005] With the cooperation of adapter components and other means, and through preset values, the grinding components can be easily controlled to move continuously in a directional manner, thereby achieving continuous, efficient and precise grinding.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grinding fixture for tire mold tread blocks, comprising a grinding table and a movable mold placed on top of it, wherein a clamping assembly is provided on the top of the grinding table and located outside the movable mold, an adapter assembly is embedded in the middle of the grinding table, a telescopic rod is fixedly installed on the upper end of the adapter assembly, and a grinding assembly located inside the movable mold is fixedly connected to the output end of the telescopic rod; the movable mold is clamped and fixed to the top of the grinding table by the clamping assembly under the constraint of the upper side of the adapter assembly. The grinding assembly includes a grinding frame fixedly connected to the output end of the telescopic rod. The side of the grinding frame away from the telescopic rod is fastened to the outside of the protrusion on the inner wall of the movable mold. A sandblasting nozzle is integrally formed on the side of the grinding frame away from the telescopic rod. The grinding sand entering the grinding frame is sprayed onto the surface of the protrusion through the sandblasting nozzle. A positioning component is connected to both the upper and lower ends of the end of the grinding frame away from the telescopic rod. The other end of the positioning component contacts the inner wall of the movable mold. An adaptive sandblasting component is provided on both the left and right sides of the end of the grinding frame away from the telescopic rod. One end of the adaptive sandblasting component extends into the interior of the grinding frame and is connected to the feed end. The other end of the adaptive sandblasting component extends to the side of the grinding frame away from the telescopic rod and contacts the protrusion.

[0007] Preferably, the grinding frame includes a sandblasting head fixedly connected to the output end of the telescopic rod. The back of the sandblasting head has a feeding chamber, and the front of the sandblasting head has a feeding port. The feeding chamber and the feeding port are connected to each other. The other end of the feeding port is connected to the sandblasting nozzle. The back of the sandblasting head is connected to the sandblasting system through the feeding chamber and the hose.

[0008] Preferably, a sealing plate is movably installed inside the feeding chamber and the feeding port, the front end of the sealing plate is sealed and fitted inside the feeding port, and the outer diameter of the sealing plate is smaller than the inner diameter of the feeding chamber.

[0009] Preferably, the interior of the sandblasting head is provided with two left and right adapter slots that connect to the two sides of the feed chamber. A linkage plate is slidably engaged at the front end of the inner cavity of the adapter slot. One end of the linkage plate is fixedly connected to the side of the sealing plate, and the other end of the linkage plate is connected to the adaptive sandblasting assembly. The adapter groove has an inclined structure, and the horizontal plane of one end of the adapter groove that is connected to the feeding chamber is located below the horizontal plane of the other end.

[0010] Preferably, a gap is left between the sandblasting nozzle and the protrusion on the inner wall of the movable mold, and a gap is left between the front end of the adaptive sandblasting assembly and the inner wall of the movable mold.

[0011] Preferably, the adaptive sandblasting assembly includes an adapter cavity formed on the front of the sandblasting head. The adapter cavity is connected to the feed cavity through a corresponding adapter groove. An adaptive guide block is sealed inside the adapter cavity. The front end of the adaptive guide block extends to the front of the sandblasting head and is inclined. An inclined drag-reducing band is movably installed on the front end of the adaptive guide block. The inclined surface of the drag-reducing band abuts against the protrusion on the inner wall of the movable mold. The two ends of the resistance-reducing belt are connected to positioning rollers. The two ends of the positioning rollers are rotatably connected to the front end of the adapter cavity through bearings. The inner side of the resistance-reducing belt is movably attached to the side of the protrusion on the inner wall of the movable mold. The upper and lower ends of the positioning plate are fixedly connected to the adapter cavity.

[0012] Preferably, the adaptive guide block has a shrinkage groove on one side inside the adapter cavity, and a return spring is connected inside the shrinkage groove. The other end of the return spring is fixedly connected to the inner wall of the adapter cavity on the side away from the adaptive guide block. The adapter component rotates and drives the grinding component to rotate via the telescopic rod, so that the inclined surface of the resistance-reducing band contacts different protrusions on the inner wall of different movable molds in sequence. Under the elastic force of the return spring, the resistance-reducing band is continuously and reciprocatingly embedded into the adapter cavity and then popped out.

[0013] Preferably, the positioning component includes a support head disposed directly in front of the upper and lower ends of the grinding frame. A drag-reducing ball is movably embedded in the front end of the support head. The upper and lower sides and the front end of the drag-reducing ball extend to the outside of the support head and roll in contact with the inner wall of the movable mold and the upper and lower sides of the protrusion. The support head is hinged to two connecting rods on the side near the sandblasting head. The other end of the connecting rod is slidably engaged with the front of the sandblasting head. The front of the sandblasting head has a corresponding slot. One end of the connecting rod is slidably engaged with one end of the slot. A pressure sensor is installed at the other end of the slot. A positioning spring is also provided in the slot, which is fixedly connected between the sliding end of the connecting rod and the pressure sensor.

[0014] Preferably, the clamping assembly includes a transmission turbine rotatably connected to the outer ring of the top of the grinding table via a bearing. A plurality of transmission rods are evenly distributed and hinged to the inner side of the transmission turbine. A clamping and positioning block is hinged to the other end of the transmission rod. A limiting groove is provided on the top of the grinding table, located at the bottom of the clamping and positioning block and distributed radially along the grinding table. The bottom of the clamping and positioning block is slidably engaged in the corresponding limiting groove. The clamping and positioning block slides along the limiting groove and finally abuts against the outer surface of the movable mold. The clamping assembly also includes a drive assembly disposed on one side of the grinding table. The drive assembly consists of a drive motor and a worm gear. One end of the worm gear is fixedly connected to the output shaft of the drive motor, and the side of the worm gear meshes with the side of the transmission worm gear.

[0015] Preferably, the adapter component includes an adapter lifting platform that is movably embedded in the middle of the grinding table and a rotary lifting machine installed at the bottom of the adapter lifting platform. The output end of the lifting machine is fixedly connected to the bottom of the adapter lifting platform, and the telescopic rod is fixedly installed at the top of the adapter lifting platform. The adapter lifting platform has a connecting cavity in the middle. One end of the connecting cavity and the telescopic rod are respectively connected to the pneumatic cylinder through a pipe that matches the solenoid valve. The adapter lifting platform also has several through holes that are evenly distributed and connected to the upper side of the connecting cavity. Each of the through holes corresponds to a clamping and positioning block. The outer surface of the adapter lifting platform is embedded with several adapter limiting plates that correspond one-to-one with several through holes. A piston rod is fixedly connected to the side of the adapter limiting plate near the axis of the adapter lifting platform. A sealing cavity is opened inside the adapter lifting platform between the through holes and the adapter limiting plates and adapted to the piston rod. The piston rod is sealed and fitted into the sealing cavity. One end of the sealing cavity is connected to the communicating cavity through the through hole.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Due to the design of the grinding component, this invention, in conjunction with the adapter component and the like, facilitates the continuous directional movement of the grinding component, thereby achieving a continuous and precise grinding effect. Furthermore, with the assistance of the positioning component and the like, the adapter component and the telescopic rod facilitate the delivery of the grinding frame and its front sandblasting nozzle to the protrusion, ensuring that the sandblasting nozzle can precisely sandblast and grind the protrusion without grinding unexpected areas around the protrusion, thus improving grinding accuracy. At the same time, it avoids the situation where excessive grinding of surrounding non-protrusion areas leads to a decrease in the precision of the inner wall of the movable mold.

[0017] Due to the adaptive sandblasting component, this invention, in conjunction with the grinding frame, allows the grinding component to rotate with the telescopic rod and the adapter component. This facilitates activation of the adaptive sandblasting component through the engagement of the protrusion, enabling the grinding frame to adaptively penetrate. This ensures that sandblasting can only be performed between the grinding component and the protrusion, further reducing the need for precise grinding of the protrusion and preventing over-grinding of surrounding areas. More importantly, it significantly reduces the amount of sandblasting used and the energy consumption of the sandblasting system.

[0018] Due to the positioning component, this invention can ensure that the adapter component and telescopic rod can deliver the grinding component to a position close to the bump with the cooperation of the pressure sensor. Moreover, with the cooperation of the drag-reducing ball bearings, the relative friction between the positioning component and the inner wall of the movable mold and the surface of the bump is effectively reduced, thereby effectively avoiding the possibility of scratches on the inner wall of the movable mold and the surface of the bump.

[0019] Due to the design of the adapter components, the rotary lifting machine and pneumatic cylinder, in conjunction with the through holes, facilitate the pushing of the adapter limiting plates to the corresponding positions. This ensures that the radius of the circle containing the adapter limiting plates matches the inner diameter of the movable mold, thereby facilitating the precise alignment and positioning of the movable molds with the external clamping and positioning blocks. This effectively avoids the slight misalignment of the inner and outer surfaces of adjacent movable molds that may occur when clamping and fixing is done solely by applying force from the outside and relying on the extrusion force of the end faces of adjacent movable molds, which could cause significant errors in the precision grinding effect.

[0020] Due to the design of the rotary lifting mechanism, the present invention facilitates the continuous rotation of the grinding assembly at a fixed height through the adapter components and telescopic rods. This allows the grinding frame to be initially aligned with a protrusion, and then, within the preset numerical limits, the rotary lifting mechanism can easily drive the grinding frame to rotate and rise alternately, thereby enabling continuous grinding of several protrusions at different heights and effectively improving grinding efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a cross-sectional view of the upper front of the adapter component of the present invention; Figure 4 This is a schematic diagram of the grinding assembly of the present invention; Figure 5 This is a schematic diagram of the back structure of the grinding assembly of the present invention; Figure 6 This is a cross-sectional view of the side of the grinding assembly of the present invention; Figure 7 This is a cross-sectional view of the front of the feed chamber in the grinding assembly of the present invention; Figure 8 This is a cross-sectional view of the top of the invention; Figure 9 for Figure 8 Top view of the mid-section.

[0022] In the diagram: 1. Grinding table; 2. Movable mold; 3. Clamping assembly; 31. Transmission turbine; 32. Transmission rod; 33. Clamping positioning block; 34. Limiting groove; 4. Adaptor assembly; 41. Adaptor lifting platform; 42. Piston rod; 43. Adaptor limiting plate; 44. Connecting cavity; 45. Through hole; 5. Telescopic rod; 6. Grinding assembly; 61. Grinding frame; 611. Sandblasting head; 612. Feeding cavity; 613. Feed inlet; 614. Sealing plate; 615. Adaptor groove; 616. Linkage plate; 62. Sandblasting nozzle; 63. Positioning assembly; 631. Support head; 632. Drag-reducing ball bearing; 633. Connecting rod; 64. Adaptive sandblasting assembly; 641. Adaptor cavity; 642. Adaptive guide block; 643. Drag-reducing band; 644. Positioning plate; 645. Shrinkage groove; 646. Return spring. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1 to 9 As shown, the present invention provides a grinding fixture for tire mold tread blocks, including a grinding table 1 and a movable mold 2 placed on top of it. A clamping component 3 located outside the movable mold 2 is provided on the top of the grinding table 1. An adapter component 4 is embedded in the middle of the grinding table 1. A telescopic rod 5 is fixedly installed on the upper end of the adapter component 4. The output end of the telescopic rod 5 is fixedly connected to a grinding component 6 located inside the movable mold 2. Under the constraint of the upper side of the adapter component 4, the movable mold 2 is clamped and fixed to the top of the grinding table 1 by the clamping component 3. The grinding assembly 6 includes a grinding frame 61 fixedly connected to the output end of the telescopic rod 5. The side of the grinding frame 61 away from the telescopic rod 5 is fastened to the outside of the protrusion on the inner wall of the movable mold 2. A sandblasting nozzle 62 is integrally formed on the side of the grinding frame 61 away from the telescopic rod 5. The grinding sand entering the grinding frame 61 is sprayed onto the surface of the protrusion through the sandblasting nozzle 62. A positioning component 63 is connected to both the upper and lower ends of the end of the grinding frame 61 away from the telescopic rod 5. The other end of the positioning component 63 contacts the inner wall of the movable mold 2. An adaptive sandblasting component 64 is provided on both the left and right sides of the end of the grinding frame 61 away from the telescopic rod 5. One end of the adaptive sandblasting component 64 extends into the interior of the grinding frame 61 and is connected to the feed end. The other end of the adaptive sandblasting component 64 extends to the side of the grinding frame 61 away from the telescopic rod 5 and contacts the protrusion. Due to the setting of the grinding component 6, with the cooperation of the positioning component 63, it is easy for the adapter component 4 and the telescopic rod 5 to send the grinding frame 61 and the sandblasting nozzle 62 on its front side to the protrusion. This ensures that the sandblasting nozzle 62 can accurately sandblast and grind the protrusion without grinding the unexpected parts around the protrusion, thereby improving the grinding accuracy. At the same time, it avoids the situation where the precision of the inner wall of the movable mold 2 is reduced due to excessive grinding of the surrounding non-protrusion parts.

[0025] The grinding frame 61 includes a sandblasting head 611 fixedly connected to the output end of the telescopic rod 5. The back of the sandblasting head 611 has a feeding chamber 612 and the front of the sandblasting head 611 has a feeding port 613. The feeding chamber 612 and the feeding port 613 are connected to each other. The other end of the feeding port 613 is connected to the sandblasting nozzle 62. The back of the sandblasting head 611 is connected to the sandblasting system through the feeding chamber 612 and the hose.

[0026] A sealing plate 614 is movably installed inside the feed chamber 612 and the feed inlet 613. The front end of the sealing plate 614 is sealed and fitted inside the feed inlet 613. The outer diameter of the sealing plate 614 is smaller than the inner diameter of the feed chamber 612.

[0027] The sandblasting head 611 is also provided with two left and right adapter slots 615 that are connected to the two sides of the feed chamber 612. The front end of the inner cavity of the adapter slot 615 is slidably engaged with the linkage plate 616. One end of the linkage plate 616 is fixedly connected to the side of the sealing plate 614, and the other end of the linkage plate 616 is connected to the adaptive sandblasting component 64. The adapter groove 615 has an inclined structure, and the horizontal plane of one end of the adapter groove 615 that is connected to the feed chamber 612 is located below the horizontal plane of the other end.

[0028] There is a gap between the sandblasting nozzle 62 and the protrusion on the inner wall of the movable mold 2, and there is a gap between the front end of the adaptive sandblasting component 64 and the inner wall of the movable mold 2.

[0029] The adaptive sandblasting assembly 64 includes an adapter cavity 641 opened on the front of the sandblasting head 611. The adapter cavity 641 is connected to the feed cavity 612 through a corresponding adapter groove 615. An adaptive guide block 642 is sealed inside the adapter cavity 641. The front end of the adaptive guide block 642 extends to the front of the sandblasting head 611 and is inclined. An inclined drag-reducing band 643 is movably installed on the front end of the adaptive guide block 642. The inclined surface of the drag-reducing band 643 abuts against the protrusion on the inner wall of the movable mold 2. Positioning rollers are driven to both ends of the drag-reducing band 643. The two ends of the positioning rollers are rotatably connected to the front end of the adapter cavity 641 through bearings. A positioning plate 644 is movably attached to the side of the inner wall of the movable mold 2 near the protrusion of the inner side of the drag-reducing band 643. The upper and lower ends of the positioning plate 644 are fixedly connected to the adapter cavity 641.

[0030] The adaptive guide block 642 has a shrinkage groove 645 on one side inside the adapter cavity 641. A reset spring 646 is connected inside the shrinkage groove 645. The other end of the reset spring 646 is fixedly connected to the inner wall of the adapter cavity 641 on the side away from the adaptive guide block 642. The adapter component 4 rotates and drives the grinding component 6 to rotate through the telescopic rod 5, so that the inclined surface of the resistance reducing band 643 contacts different protrusions on the inner wall of different movable molds 2 in sequence, thereby causing the resistance reducing band 643 to be continuously and reciprocally embedded into the interior of the adapter cavity 641 and popped out under the elastic force of the reset spring 646. Due to the adaptive sandblasting component 64, in cooperation with the grinding frame 61, when the grinding component 6 rotates with the telescopic rod 5 and the adapter component 4, it is easy to activate the adaptive sandblasting component 64 through the cooperation of the protrusion. This allows the grinding frame 61 to adaptively pass through, ensuring that sandblasting can only be carried out in the front and rear directions where the grinding component 6 is aligned with the protrusion. This further reduces the effect of precise grinding of the protrusion and avoids over-grinding of surrounding areas. More importantly, it greatly reduces the amount of sandblasting used and the operating energy consumption of the sandblasting system. Furthermore, with the cooperation of the positioning plate 644 and the drag-reducing strip 643, it is easy to avoid contact friction between the bump and the adaptive sandblasting component 64, thus avoiding scratches on the bump.

[0031] The positioning component 63 includes a support head 631 located directly in front of the upper and lower ends of the grinding frame 61. A drag-reducing ball 632 is movably embedded in the front end of the support head 631. The upper and lower sides and the front end of the drag-reducing ball 632 extend to the outside of the support head 631 and roll in contact with the inner wall of the movable mold 2 and the upper and lower sides of the protrusion. Two connecting rods 633 are hinged to the side of the support head 631 near the sandblasting head 611. The other end of the connecting rod 633 is slidably engaged with the front of the sandblasting head 611. The front of the sandblasting head 611 has a corresponding slot. One end of the connecting rod 633 is slidably engaged with one end of the slot. A pressure sensor is installed at the other end of the slot. A positioning spring is also provided in the slot, which is fixedly connected between the sliding end of the connecting rod 633 and the pressure sensor. Due to the positioning component 63, the adapter component 4 and the telescopic rod 5 can be used to deliver the grinding component 6 to a position close to the bump, and the positioning component 63 can be effectively used to reduce the relative friction between the positioning component 63 and the inner wall of the movable mold 2 and the surface of the bump, thereby effectively avoiding the possibility of scratches on the inner wall of the movable mold 2 and the surface of the bump.

[0032] The clamping assembly 3 includes a transmission turbine 31 that is rotatably connected to the outer ring of the top of the grinding table 1 via a bearing. Several transmission rods 32 are evenly distributed and hinged to the inner side of the transmission turbine 31. The other end of the transmission rods 32 is hinged to a clamping positioning block 33. The top of the grinding table 1 is provided with a limiting groove 34 located at the bottom of the clamping positioning block 33 and distributed radially along the grinding table 1. The bottom of the clamping positioning block 33 is slidably engaged in the corresponding limiting groove 34. The clamping positioning block 33 slides along the limiting groove 34 and finally abuts against the outer surface of the movable mold 2. The clamping assembly 3 also includes a drive assembly disposed on one side of the grinding table 1. The drive assembly consists of a drive motor and a worm gear. One end of the worm gear is fixedly connected to the output shaft of the drive motor, and the side of the worm gear meshes with the side of the transmission turbine 31.

[0033] The adapter component 4 includes an adapter lifting platform 41 that is movably embedded in the middle of the grinding table 1 and a rotary lifting machine installed at the bottom of the adapter lifting platform 41. The output end of the lifting machine is fixedly connected to the bottom of the adapter lifting platform 41, and the telescopic rod 5 is fixedly installed at the top of the adapter lifting platform 41. The rotary lifting mechanism includes independent rotating and lifting components. The lifting component is fixedly installed on the output end of the rotating component. The two are connected to a control board via wires. The control board is fixedly installed on the front of the grinding table 1. The control board is electrically connected to the drive motor, telescopic rod 5, and pneumatic cylinder. A pressure sensor transmits signals between the control boards. Therefore, due to the setting of the rotary lifting mechanism, the grinding component 6 can be continuously rotated at a fixed height through the adapter component 4 and the telescopic rod 5. Thus, after the grinding frame 61 is initially aligned with a protrusion, the rotary lifting mechanism can easily drive the grinding frame 61 to rotate and lift alternately within the preset value limit, thereby realizing continuous grinding of several protrusions at different heights and effectively improving grinding efficiency. The middle part of the adapter lifting platform 41 is provided with a connecting cavity 44. One end of the connecting cavity 44 and the telescopic rod 5 are respectively connected to the pneumatic cylinder through the pipes that cooperate with the solenoid valve. The interior of the adapter lifting platform 41 is also provided with a number of through holes 45 that are connected to the upper side of the connecting cavity 44 and are evenly distributed. The number of through holes 45 correspond one-to-one with the clamping and positioning block 33. The outer surface of the adapter lifting platform 41 is embedded with several adapter limiting plates 43 that correspond one-to-one with several through holes 45. A piston rod 42 is fixedly connected to one side of the adapter limiting plate 43 near the axis of the adapter lifting platform 41. A sealing cavity is opened inside the adapter lifting platform 41 between the through holes 45 and the adapter limiting plates 43 and adapted to the piston rod 42. The piston rod 42 is sealed and fitted in the sealing cavity. One end of the sealing cavity is connected to the connecting cavity 44 through the through hole 45. Due to the configuration of the adapter component 4, the rotary lifting machine and the pneumatic cylinder can easily push the adapter limiting plate 43 to the corresponding position with the cooperation of the through hole 45, ensuring that the radius of the circle where the adapter limiting plate 43 is located is compatible with the inner diameter of the movable mold 2. This facilitates the precise alignment and positioning of the movable mold with the outer clamping and positioning block 33, etc., and effectively avoids the situation where slight misalignment of the inner and outer surfaces of adjacent movable molds may occur when clamping and fixing is done by applying force from the outside and relying on the squeezing force of the end face of adjacent movable molds, which would cause significant errors in the precision grinding effect.

[0034] Working principle and usage process of this invention: First, input the inner and outer radii of the movable mold, the spacing of the longitudinal protrusions on the movable mold, and the number of longitudinal protrusions through the control board; Start the rotary lift again to move the upper end of the adapter lifting platform 41 above the grinding table 1, and with the cooperation of the pneumatic cylinder and solenoid valve, the piston rod 42 pushes the adapter limiting plate 43 to move until several adapter limiting plates 43 move to a position equal to the inner diameter of the previously input movable mold 2. At this time, several movable molds of the movable mold 2 are placed end to end on the grinding table 1, and under the restriction of several adapting limiting plates 43, the several movable molds are neatly connected end to end. Then the drive motor starts in time and drives the transmission turbine 31 through the worm gear. Then, under the restriction of the limiting groove 34, the transmission rod 32 drives several clamping and positioning blocks 33 to move closer to each other until the outer surface of several movable molds is clamped under the restriction of several adapting limiting plates 43. At this time, the pneumatic cylinder runs again, causing the adapter limit plate 43 and piston rod 42 to retract into the adapter lifting platform 41. Under the squeezing force of the contact surface of the adjacent movable mold and the supporting action of the clamping positioning block 33, several movable molds are fixed. Then, under the control of the control panel, the lifting component and the telescopic rod 5 are operated in sequence, and with the cooperation of the positioning component 63 and the pressure sensor, the grinding frame 61 is moved to the outside of one of the protrusions in the uppermost layer. Then the lifting component and the telescopic rod 5 stop, and at the same time the rotating component and the sandblasting system are immediately started, which can drive the grinding frame 61 and the adaptive sandblasting component 64 to rotate continuously along the inner wall of the movable mold 2. During this period, the sandblasting enters the sandblasting nozzle 62 through the feeding chamber 612 and the feeding port 613 and is sprayed towards the protrusion. During this period, the grinding frame 61 can only be opened when the drag-reducing band 643 in either of the left or right adaptive sandblasting components 64 contacts the protrusion. At this time, sandblasting is sprayed onto the protrusion through the sandblasting nozzle 62. When the grinding frame 61 passes the protrusion, the outer end of the drag-reducing band 643 is not under force and is therefore ejected by the reset spring 646. At the same time, it drives the sealing plate 614 to reset through the linkage plate 616 and seals the feed port 613, thereby stopping the sandblasting nozzle 62 from spraying sand onto the protrusion.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tire mold pattern block grinding tooling, comprising a grinding table (1) and a top of which placed the match plate (2), characterized in that: The grinding table (1) is provided with a clamping component (3) located outside the movable mold (2) on the top. An adapter component (4) is embedded in the middle of the grinding table (1). A telescopic rod (5) is fixedly installed on the upper end of the adapter component (4). The output end of the telescopic rod (5) is fixedly connected to a grinding component (6) located inside the movable mold (2). Under the restriction of the upper side of the adapter component (4), the movable mold (2) is clamped and fixed to the top of the grinding table (1) by the clamping component (3). The grinding assembly (6) includes a grinding frame (61) fixedly connected to the output end of the telescopic rod (5). The side of the grinding frame (61) away from the telescopic rod (5) is fastened to the outside of the protrusion on the inner wall of the movable mold (2). A sandblasting nozzle (62) is integrally formed on the side of the grinding frame (61) away from the telescopic rod (5). The grinding sand entering the grinding frame (61) is sprayed onto the surface of the protrusion through the sandblasting nozzle (62). A positioning component (63) is connected to both the upper and lower ends of the end of the grinding frame (61) away from the telescopic rod (5). The other end of the positioning component (63) is in contact with the inner wall of the movable mold (2). An adaptive sandblasting component (64) is provided on both the left and right sides of the end of the grinding frame (61) away from the telescopic rod (5). One end of the adaptive sandblasting component (64) extends into the interior of the grinding frame (61) and is connected to the feed end. The other end of the adaptive sandblasting component (64) extends to the side of the grinding frame (61) away from the telescopic rod (5) and is in contact with the protrusion.

2. A tire mold segment grinding fixture according to claim 1, wherein: The grinding frame (61) includes a sandblasting head (611) fixedly connected to the output end of the telescopic rod (5). The back of the sandblasting head (611) is provided with a feeding chamber (612) and the front of the sandblasting head (611) is provided with a feeding port (613). The feeding chamber (612) and the feeding port (613) are connected to each other. The other end of the feeding port (613) is connected to the sandblasting nozzle (62). The back of the sandblasting head (611) is connected to the sandblasting system through the feeding chamber (612) and the hose.

3. The tire mold tread block grinding fixture according to claim 2, characterized in that: A sealing plate (614) is movably installed inside the feed chamber (612) and the feed inlet (613). The front end of the sealing plate (614) is sealed and fitted inside the feed inlet (613). The outer diameter of the sealing plate (614) is smaller than the inner diameter of the feed chamber (612).

4. A tire mold segment grinding fixture according to claim 3, wherein: The interior of the sandblasting head (611) is also provided with two left and right adapter slots (615) that are connected to the two sides of the feed chamber (612). The front end of the inner cavity of the adapter slot (615) is slidably engaged with a linkage plate (616). One end of the linkage plate (616) is fixedly connected to the side of the sealing plate (614), and the other end of the linkage plate (616) is connected to the adaptive sandblasting assembly (64). The adapter groove (615) has an inclined structure, and the horizontal plane of one end of the adapter groove (615) that is connected to the feed chamber (612) is located below the horizontal plane of the other end.

5. A tire mold segment grinding fixture as defined in claim 1, wherein: A gap is left between the sandblasting nozzle (62) and the protrusion on the inner wall of the movable mold (2), and a gap is left between the front end of the adaptive sandblasting assembly (64) and the inner wall of the movable mold (2).

6. A tire mold segment grinding fixture according to claim 4 wherein: The adaptive sandblasting assembly (64) includes an adapter cavity (641) opened on the front of the sandblasting head (611). The adapter cavity (641) is connected to the feed cavity (612) through a corresponding adapter groove (615). An adaptive guide block (642) is sealed inside the adapter cavity (641). The front end of the adaptive guide block (642) extends to the front of the sandblasting head (611) and is inclined. An inclined drag-reducing band (643) is movably installed on the front end of the adaptive guide block (642). The inclined surface of the drag-reducing band (643) abuts against the protrusion on the inner wall of the movable mold (2). The two ends of the resistance-reducing band (643) are connected to positioning rollers. The two ends of the positioning rollers are rotatably connected to the front end of the adapter cavity (641) through bearings. The inner side of the resistance-reducing band (643) is movably attached to the side of the inner wall protrusion of the movable mold (2). The upper and lower ends of the positioning plate (644) are fixedly connected to the adapter cavity (641).

7. A tire mold segment grinding fixture according to claim 6, wherein: The adaptive guide block (642) has a shrinkage groove (645) on one side inside the adapter cavity (641). A reset spring (646) is connected inside the shrinkage groove (645). The other end of the reset spring (646) is fixedly connected to the inner wall of the adapter cavity (641) on the side away from the adaptive guide block (642). The adapter component (4) rotates and drives the grinding component (6) to rotate through the telescopic rod (5), so that the inclined surface of the resistance reducing band (643) contacts different protrusions on the inner wall of different movable molds (2) in sequence, thereby causing the resistance reducing band (643) to continuously reciprocate into the interior of the adapter cavity (641) and pop out under the elastic force of the reset spring (646).

8. A tire mold segment grinding fixture according to claim 2 wherein: The positioning component (63) includes a support head (631) located directly in front of the upper and lower ends of the grinding frame (61). The front end of the support head (631) is movably embedded with a resistance-reducing ball (632). The upper and lower sides and the front end of the resistance-reducing ball (632) extend to the outside of the support head (631) and roll in contact with the inner wall of the movable mold (2) and the upper and lower sides of the protrusion. The support head (631) is hinged to two connecting rods (633) on the side near the sandblasting head (611). The other end of the connecting rod (633) is slidably engaged with the front of the sandblasting head (611). The front of the sandblasting head (611) has a corresponding slot. One end of the connecting rod (633) is slidably engaged with one end of the slot. A pressure sensor is installed at the other end of the slot. A positioning spring is also provided in the slot, which is fixedly connected between the sliding end of the connecting rod (633) and the pressure sensor.

9. The tire mold tread block grinding fixture according to claim 1, characterized in that: The clamping assembly (3) includes a transmission turbine (31) rotatably connected to the top outer ring of the grinding table (1) via a bearing. The inner side of the transmission turbine (31) is hinged with a plurality of evenly distributed transmission rods (32). The other end of the transmission rods (32) is hinged with a clamping positioning block (33). The top of the grinding table (1) is provided with a limiting groove (34) located at the bottom of the clamping positioning block (33) and distributed radially along the grinding table (1). The bottom of the clamping positioning block (33) is slidably engaged in the corresponding limiting groove (34). The clamping positioning block (33) slides along the limiting groove (34) and finally abuts against the outer surface of the movable mold (2). The clamping assembly (3) also includes a drive assembly disposed on one side of the grinding table (1). The drive assembly consists of a drive motor and a worm gear. One end of the worm gear is fixedly connected to the output shaft of the drive motor, and the side of the worm gear meshes with the side of the transmission turbine (31).

10. A tire mold segment grinding fixture according to claim 9, wherein: The adapter component (4) includes an adapter lifting platform (41) that is movably embedded in the middle of the grinding table (1) and a rotary lifting machine installed at the bottom of the adapter lifting platform (41). The output end of the lifting machine is fixedly connected to the bottom of the adapter lifting platform (41), and the telescopic rod (5) is fixedly installed at the top of the adapter lifting platform (41). The adapter lifting platform (41) has a connecting cavity (44) in the middle. One end of the connecting cavity (44) and the telescopic rod (5) are respectively connected to the pneumatic cylinder through the pipes that cooperate with the solenoid valve. The adapter lifting platform (41) also has several through holes (45) that are connected to the upper side of the connecting cavity (44) and are evenly distributed. The several through holes (45) correspond one-to-one with the clamping positioning block (33). The outer surface of the adapter lifting platform (41) is embedded with several adapter limiting plates (43) corresponding to several through holes (45). A piston rod (42) is fixedly connected to one side of the adapter limiting plate (43) near the axis of the adapter lifting platform (41). A sealing cavity is opened inside the adapter lifting platform (41) between the through hole (45) and the adapter limiting plate (43) and adapted to the piston rod (42). The piston rod (42) is sealed and fitted in the sealing cavity. One end of the sealing cavity is connected to the connecting cavity (44) through the through hole (45).

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