Quick-change structure of movable type block

Abstract

The utility model discloses a movable type block quick change structure, it belongs to the field of tire mould manufacturing, including the mould body, be equipped with the recess on the mould body, the recess is inlayed with movable type block, be connected with spring ball head plunger on movable type block, the setting direction of spring ball head plunger is perpendicular with the inlaying direction of movable type block, be equipped with the limit structure in the recess, the limit structure can cooperate with the ball head of spring ball head plunger end portion and protrude and limit movable type block away from the recess, the bottom of recess is equipped with the air hole, be equipped with the air blowing passage with air hole intercommunication on the mould body lateral wall. The above -mentioned structure does not need complicated dismounting structure, also can not influence tire appearance, more need not to dismount the side plate, and movable type block installation positioning is convenient, and it is quick -witted to change.

Description

Technical Field

[0001] This utility model relates to the field of tire mold manufacturing, specifically to a quick-change structure for movable type blocks. Background Technology

[0002] To reduce production costs, tire manufacturers often make insertable type blocks on tire molds. By changing the type blocks, different styles of tires can be vulcanized from a single mold.

[0003] Currently, there are two main methods for embedding type blocks in tire molds: front screw fixing and back screw fixing. Front screw fixing typically involves screwing the type block onto its surface, which results in screw holes at the vulcanized tire's type block, affecting the tire's appearance. Therefore, this method is rarely used. Back screw fixing requires removing the side plate from the mold shell to replace the type block, making the process more complex and costly.

[0004] In view of the problems existing in the prior art, this utility model designs and manufactures a quick-change structure for movable type blocks to overcome the above defects. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a quick-change structure for movable type blocks that eliminates the need for complex disassembly, does not affect the tire's appearance, and does not require the removal of the side panels. The movable type blocks are easy to install and position, and can be replaced quickly.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a quick-change structure for movable type blocks, comprising a mold body, wherein the mold body is provided with a groove, and movable type blocks are embedded in the groove; A spring ball plunger is connected to the movable type block, and the setting direction of the spring ball plunger is perpendicular to the embedding direction of the movable type block; The groove is provided with a limiting structure, which can cooperate with the ball head protruding from the end of the spring ball head plunger to restrict the movable type block from moving away from the groove; The bottom of the groove is provided with an air blowing hole, and the side wall of the mold body is provided with an air blowing channel that is connected to the air blowing hole.

[0007] Preferably, the limiting structure is configured as a fixed shaft connected to the bottom of the groove, and there is at least one fixed shaft, which is provided with a limiting boss. The bottom of the movable type block is provided with a countersunk hole that mates with the fixed shaft. The number and position of the countersunk holes are consistent with the fixed shaft. The spring ball plunger is installed in the side wall of the countersunk hole, and the ball head of the spring ball plunger can extend out of the side wall of the countersunk hole. After the movable type block is installed into the groove through the countersunk hole and the fixed shaft, the ball head of the spring ball plunger is stuck at the bottom of the limiting boss.

[0008] Preferably, the fixed shaft has at least one limiting boss in the axial direction, and the bottom of the limiting boss that is matched with the countersunk hole sidewall is provided with a spring ball plunger.

[0009] Preferably, the countersunk hole sidewall has a plurality of threaded mounting holes evenly distributed around its circumference, the threaded mounting holes penetrating the countersunk hole sidewall, and the spring ball plunger is screwed into the threaded mounting holes; And / or, the countersunk hole sidewall is symmetrically provided with two threaded mounting holes, the two threaded mounting holes respectively penetrating the countersunk hole sidewall from both sides of the movable block, and the spring ball plunger is screwed into the threaded mounting holes.

[0010] Preferably, the limiting structure is a limiting groove on the side wall of the groove; A spring ball plunger is provided on the side wall of the movable type block at the corresponding position of the limiting groove, and the ball head of the spring ball plunger can be inserted into the limiting groove.

[0011] Preferably, limiting grooves are provided on both sides of the long side of the groove; Each of the movable type blocks has at least one spring ball plunger at the corresponding limiting groove position on both sides.

[0012] Preferably, the limiting structure is a variable diameter hole located at the bottom of the groove, and there is at least one variable diameter hole. The end of the variable diameter hole closer to the groove is a small diameter hole, and the end of the variable diameter hole farther from the groove is a large diameter hole. The bottom of the movable type block is provided with a clamping block. The number and position of the clamping blocks are consistent with the diameter-changing hole. The outer diameter of the clamping block is slightly smaller than the diameter of the small diameter hole. Several spring ball plungers are evenly distributed on the outer circumference of the clamping block. After the movable type block is installed into the groove, the ball head of the spring ball head plunger on the clamping block is locked in the large diameter hole at the bottom of the small diameter hole.

[0013] Preferably, the large-diameter hole extends through the bottom of the mold body, and a sealing cover plate for sealing the large-diameter hole is connected to the end of the hole.

[0014] Preferably, the bottom of the groove is provided with at least one threaded hole, and a threaded ferrule is screwed into the threaded hole, and the variable diameter hole is set as the inner hole of the threaded ferrule.

[0015] Preferably, the limiting structure has a gradually transitioning surface at the initial position where the spring ball plunger head retracts or pops out.

[0016] The advantages of this utility model are: 1. This utility model utilizes a movable type block and a spring-loaded ball plunger in conjunction with a limiting structure in the groove. This ensures that after the movable type block is embedded in the groove, the ball head of the spring-loaded ball plunger is locked in the limiting structure, thus preventing the movable type block from detaching from the groove. When the movable type block needs to be removed from the groove, high-pressure gas is used through the air blowing channel on the side wall of the mold body and the air blowing hole at the bottom of the groove. With the extension and retraction characteristics of the ball head of the spring-loaded ball plunger, the ball head of the spring-loaded ball plunger can be disengaged from the limiting structure, thereby allowing the movable type block to be removed from the groove.

[0017] 2. This utility model eliminates the connection structure between the front and back of the movable type block, which not only does not affect the appearance of the tire, but also makes the installation and positioning of the movable type block quick and easy, and the disassembly of the movable type block simpler, saving replacement costs and time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a first embodiment of a movable type block quick-change structure; Figure 2 This is a partially enlarged schematic diagram of Embodiment 1 of this utility model; Figure 3 This is a top sectional view of a movable type block according to Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the fixed shaft in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the spring ball head plunger of this utility model; Figure 6 This is a schematic diagram of Embodiment 2 of the present invention; Figure 7 This is a partially enlarged schematic diagram of Embodiment 2 of this utility model; Figure 8 This is a top sectional view of the movable type block according to Embodiment 2 of this utility model; Figure 9 This is a schematic diagram of Embodiment 3 of the present invention; Figure 10 This is a partially enlarged schematic diagram of Embodiment 3 of this utility model; Figure 11 This is a schematic diagram of the spring ball plunger being mounted on the clamping block in Embodiment 3 of this utility model; Figure 12 This is a schematic diagram showing the distribution of the spring ball plunger on the clamping block in Embodiment 3 of this utility model; Figure 13 This is a schematic diagram of Embodiment 4 of the present utility model; Figure 14 This is a partially enlarged schematic diagram of Embodiment 4 of this utility model; Figure 15 This is a schematic diagram of the threaded ferrule of Embodiment 4 of this utility model.

[0019] In the diagram: 1. Mold body; 2. Movable block; 3. Air blow hole; 4. Air blow channel; 5. Fixed shaft; 6. Spring ball plunger; 7. Countersunk hole; 8. Limiting groove; 9. Sealing cover plate; 10. Clamping block; 11. Variable diameter hole; 12. Threaded ferrule; 51. Limiting boss. Detailed Implementation

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] A quick-change structure for movable type blocks includes a mold body 1 with a groove on the mold body 1, in which movable type blocks 2 are embedded. If applied to a tire mold, the mold body 1 corresponds to the side plate.

[0022] The movable type block 2 is connected to a spring ball plunger 6, the spring ball plunger 6 is structured as follows: Figure 5 As shown, it is a general-purpose accessory. The setting direction of the spring ball plunger 6 is perpendicular to the embedding direction of the movable type 2. A limiting structure is provided in the groove. The limiting structure can cooperate with the ball head protruding from the end of the spring ball plunger 6 to restrict the movable type 2 from moving away from the groove. Specifically, the ball head of the spring ball plunger 6 can be stuck in the limiting structure, thereby restricting the movable type 2 from coming out of the groove.

[0023] To ensure that the movable type block 2 can be removed from the groove, an air blowing hole 3 is provided at the bottom of the groove. The number of air blowing holes 3 at the bottom of the groove is reasonably set according to the size of the movable type block 2. An air blowing channel 4 is provided on the side wall of the mold body 1 and is connected to the air blowing hole 3. As long as high-pressure gas is introduced into the air blowing channel 4 from the side wall of the mold body 1, the ball head of the spring ball head plunger 6 can be disengaged from the limiting structure by means of the ball head extension and retraction characteristics of the spring ball head plunger 6, thereby realizing the removal of the movable type block 2 from the groove. Example 1

[0024] like Figures 1 to 4 As shown, the limiting structure is a fixed shaft 5 connected to the bottom of the groove. The position of the fixed shaft 5 should be offset from the position of the air hole 3 at the bottom of the groove. There is at least one fixed shaft 5, which is reasonably set according to the size of the movable type block 2. The fixed shaft 5 is provided with a limiting boss 51.

[0025] The bottom of the movable type block 2 is provided with a countersunk hole 7 that mates with the fixed shaft 5. The number and position of the countersunk holes 7 are the same as those of the fixed shaft 5. The spring ball plunger 6 is installed in the side wall of the countersunk hole 7. The ball head of the spring ball plunger 6 can extend out of the side wall of the countersunk hole 7, and when the ball head is pushed, the ball head enters the side wall of the countersunk hole 7, which facilitates the mating with the fixed shaft 5.

[0026] In this embodiment, after the movable type block 2 is installed into the groove through the countersunk hole 7 and the fixed shaft 5, the ball head of the spring ball plunger 6 is stuck at the bottom of the limiting boss 51. Through the cooperation between the limiting boss 51 and the ball head of the spring ball plunger 6, the movable type block 2 is positioned in the groove.

[0027] At least one limiting boss 51 is provided on the fixed shaft 5 in the axial direction. The specific setting is reasonable according to the length of the fixed shaft 5. The bottom of the limiting boss 51 that is matched with the side wall of the countersunk hole 7 is provided with a spring ball plunger 6.

[0028] The countersunk hole 7 has several threaded mounting holes evenly distributed around its sidewall. The threaded mounting holes penetrate the sidewall of the countersunk hole 7, and the spring ball plunger 6 is screwed into the threaded mounting holes. Preferably, two threaded mounting holes are symmetrically arranged on the sidewall of the countersunk hole 7. The two threaded mounting holes penetrate the sidewall of the countersunk hole 7 from both sides of the movable block 2, so that the spring ball plunger 6 can be screwed into the threaded mounting holes. Example 2

[0029] like Figures 6 to 8 As shown, the limiting structure is a limiting groove 8 on the side wall of the groove. A spring ball plunger 6 is provided on the side wall of the movable type 2 at the position corresponding to the limiting groove 8. The ball head of the spring ball plunger 6 can be inserted into the limiting groove 8. Through the cooperation between the limiting groove 8 and the ball head of the spring ball plunger 6, the movable type 2 is positioned in the groove.

[0030] Specifically, it is preferable that a limiting groove 8 is provided on both sides of the long side of the groove, and at least one spring ball plunger 6 is provided on both sides of the movable type block 2 at the position corresponding to the limiting groove 8.

[0031] To facilitate the installation of the spring ball plunger 6, the threaded mounting holes for installing the spring ball plunger 6 are preferably designed as through holes. Example 3

[0032] like Figures 9 to 12 As shown, the limiting structure is set as a variable diameter hole 11 located at the bottom of the groove. There is at least one variable diameter hole 11. The end of the variable diameter hole 11 near the groove is set as a small diameter hole, which is less than or equal to the minimum size of the groove. The end of the variable diameter hole 11 away from the groove is set as a large diameter hole.

[0033] The bottom of the movable type block 2 is provided with a clamping block 10. The number and position of the clamping blocks 10 are the same as those of the variable diameter hole 11. Several spring ball plungers 6 are evenly distributed on the outer circumference of the outer wall of the clamping block 10. The outer diameter of the clamping block 10 is slightly smaller than the diameter of the small diameter hole, so as to ensure that the clamping block 10 with the spring ball plungers 6 can move in the small diameter hole.

[0034] In this embodiment, after the movable type block 2 is installed in the groove, the ball head of the spring ball plunger 6 on the clamping block 10 is engaged in the large diameter hole at the bottom of the small diameter hole. The movable type block 2 is positioned in the groove by the engagement of the step of the variable diameter hole 11 with the ball head of the spring ball plunger 6.

[0035] To facilitate the machining of large-diameter holes, in this embodiment, the large-diameter hole preferably penetrates through the bottom of the mold body 1. The end of the large-diameter hole is connected to a sealing cover plate 9 to seal the large-diameter hole. The sealing cover plate 9 preferably has an upper sealing ring at the sealing point to ensure sealing performance.

[0036] The air blowing hole 3 is preferably connected to the large-diameter hole. Of course, it can also be set separately from the variable-diameter hole 11, as long as the air blowing hole 3 is located at the bottom of the groove, ensuring that the high-pressure gas can provide the thrust to break away from the groove from the bottom of the movable block 2. Example 4

[0037] like Figures 13 to 15 As shown, this embodiment is an improvement on the basis of embodiment three. The same structure as embodiment three will not be described again. In order to eliminate the corresponding sealing cover plate 9 and other sealing structures, this embodiment has at least one threaded hole at the bottom of the groove. A threaded ferrule 12 is screwed into the threaded hole, and the variable diameter hole 11 is set as the inner hole of the threaded ferrule 12.

[0038] The air blowing hole 3 is preferably located at the bottom of the threaded hole, and the diameter of the air blowing hole 3 is preferably smaller than the diameter of the threaded hole, so as to facilitate the positioning of the threaded ferrule 12.

[0039] In the above embodiments, whether the limiting structure is a stepped structure or a groove structure, the ball head of the spring ball plunger 6 is basically stuck in the limiting structure. In order to ensure that the ball head of the spring ball plunger 6 can pop out or retract more stably when the movable block 2 is pushed, the limiting structure is provided with a gradual transition surface at the initial position of the ball head of the spring ball plunger 6 retracting or popping out.

[0040] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A quick-change structure for movable type blocks, characterized in that, Includes a mold body (1), the mold body (1) is provided with a groove, and a movable type block (2) is embedded in the groove; A spring ball plunger (6) is connected to the movable type block (2), and the setting direction of the spring ball plunger (6) is perpendicular to the embedding direction of the movable type block (2); The groove is provided with a limiting structure, which can cooperate with the ball head extending from the end of the spring ball head plunger (6) to restrict the movable block (2) from moving away from the groove; The bottom of the groove is provided with an air blowing hole (3), and the side wall of the mold body (1) is provided with an air blowing channel (4) which is connected to the air blowing hole (3).

2. The movable type block quick-change structure according to claim 1, characterized in that, The limiting structure is a fixed shaft (5) connected to the bottom of the groove. There is at least one fixed shaft (5), and a limiting boss (51) is provided on the fixed shaft (5). The bottom of the movable type block (2) is provided with a countersunk hole (7) that cooperates with the fixed shaft (5). The number and position of the countersunk holes (7) are the same as those of the fixed shaft (5). The spring ball plunger (6) is installed in the side wall of the countersunk hole (7). The ball head of the spring ball plunger (6) can extend out of the side wall of the countersunk hole (7). After the movable type block (2) is installed into the groove through the countersunk hole (7) and the fixed shaft (5), the ball head of the spring ball plunger (6) is stuck at the bottom of the limiting boss (51).

3. The movable type block quick-change structure according to claim 2, characterized in that, At least one limiting boss (51) is provided on the fixed shaft (5) in the axial direction, and spring ball plungers (6) are provided at the bottom of the limiting boss (51) that are matched with the side wall of the countersunk hole (7).

4. The movable type block quick-change structure according to claim 2, characterized in that, The countersunk hole (7) has several threaded mounting holes evenly distributed around its sidewall. The threaded mounting holes penetrate the sidewall of the countersunk hole (7), and the spring ball plunger (6) is screwed into the threaded mounting holes. And / or, the countersunk hole (7) has two threaded mounting holes symmetrically arranged on its sidewall. The two threaded mounting holes pass through the sidewall of the countersunk hole (7) from both sides of the movable block (2). The spring ball plunger (6) is screwed into the threaded mounting hole.

5. The movable type block quick-change structure according to claim 1, characterized in that, The limiting structure is set as a limiting groove (8) on the side wall of the groove. The movable type block (2) has a spring ball plunger (6) on its side wall corresponding to the limiting groove (8), and the ball head of the spring ball plunger (6) can be inserted into the limiting groove (8).

6. The movable type block quick-change structure according to claim 5, characterized in that, Limiting grooves (8) are provided on both sides of the long side of the groove; Each of the movable type blocks (2) has at least one spring ball plunger (6) at the corresponding limiting groove (8) position on both sides.

7. The movable type block quick-change structure according to claim 1, characterized in that, The limiting structure is configured as a variable diameter hole (11) located at the bottom of the groove. There is at least one variable diameter hole (11). The end of the variable diameter hole (11) near the groove is configured as a small diameter hole, and the end of the variable diameter hole (11) away from the groove is configured as a large diameter hole. The bottom of the movable type block (2) is provided with a clamping block (10). The number and position of the clamping blocks (10) are the same as those of the variable diameter hole (11). The outer diameter of the clamping block (10) is slightly smaller than the diameter of the small diameter hole. Several spring ball plungers (6) are evenly distributed on the outer wall of the clamping block (10). After the movable type block (2) is installed into the groove, the ball head of the spring ball head plunger (6) on the clamping block (10) is locked in the large diameter hole at the bottom of the small diameter hole.

8. The movable type block quick-change structure according to claim 7, characterized in that, The large-diameter hole penetrates the bottom of the mold body (1), and the end of the large-diameter hole is connected to a sealing cover plate (9) to seal the large-diameter hole.

9. A quick-change structure for movable type blocks according to claim 7, characterized in that, The bottom of the groove is provided with at least one threaded hole, and a threaded sleeve (12) is screwed into the threaded hole. The variable diameter hole (11) is set as the inner hole of the threaded sleeve (12).

10. A quick-change structure for movable type blocks according to claim 1, characterized in that, The limiting structure has a gradually transitioning surface at the initial position where the spring ball plunger (6) retracts or pops out.

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