A tire tread cold puncture device

Abstract

This invention provides a cold puncture device for tire treads, including a frame, a base plate for placing tire treads, and a puncture mechanism for puncturing. The puncture mechanism is driven by a linear drive mechanism mounted on the frame to move along the length of the frame. The puncture mechanism includes a first lifting mechanism that drives a puncture needle to move up and down for puncture. A clearance groove is provided on the base plate corresponding to the position of the puncture needle. The base plate is provided with several rolling elements that can rotate in various directions, facilitating the unfolding of the tire tread on the base plate. This invention can process tire treads that are not on the production line and have been thoroughly dried, thus ensuring the quality of the tire tread. Furthermore, the folded tire tread can be easily unfolded and flattened on the base plate.

Description

Technical Field

[0001] This utility model belongs to the field of tire manufacturing, and specifically relates to a tread cold puncture device. Background Technology

[0002] The forming process is a crucial step in tire manufacturing. Due to manual operation in the rubber compound bonding process, the tread requires manual puncture for tire repair and air removal. Air pockets between the rubber pad A and the cord fabric can cause defects like air bubbles in the tire casing, affecting the quality of the tire blank and leading to tire downgrading. Manual puncture also impacts production efficiency. Existing cold puncture devices for tire treads are all production line equipment, such as the structures in patents CN222222795U (a tread straight puncture device) and CN220534996U (a tire tread puncture device). After the tread is extruded and formed, it reaches the puncture station. The bottom of the puncture station is equipped with a conveyor structure that moves the tread linearly along the production line direction; above the conveyor structure are puncture components that can move up and down. Because the tread needs to be cooled after extrusion, the moisture is difficult to completely remove. Production lines require high efficiency and speed. When the tread reaches the puncture stage, some moisture remains on the tread. As it enters the needle hole during puncture, it is difficult for subsequent processes to remove the moisture from the needle hole, thus affecting the quality of the processed tire. Moreover, the puncture needle is very fast and can only be used on relatively thin tire treads; it is not suitable for thicker tire treads. Summary of the Invention

[0003] This invention provides a device for cold puncture of tire tread.

[0004] The purpose of this utility model is achieved in the following manner: a tire tread cold puncture device, including a frame, a base plate for placing the tire tread and a puncture mechanism for puncturing are provided on the frame; the puncture mechanism is driven by a linear drive mechanism provided on the frame to move along the length direction of the frame; the puncture mechanism includes a first lifting mechanism to drive a puncture needle to move up and down for puncture; a clearance groove is provided on the base plate corresponding to the position of the puncture needle of the puncture mechanism.

[0005] The base plate is provided with a plurality of rolling elements that can rotate in various directions to facilitate the unfolding of the tire tread on the base plate; the rolling elements avoid the position of the clearance groove; the highest position of the rolling elements is flush with the upper surface of the base plate that contacts the tire tread, or the highest position of the rolling elements is higher than the upper surface of the base plate but the higher part does not exceed 5 mm.

[0006] The balls are bullseye bearings arranged in rows evenly on the base plate; the base plate is provided with mounting grooves corresponding to the positions of the bullseye bearings; the bullseye bearings are fixedly installed in the mounting grooves, and the highest position of the balls of the bullseye bearings is flush with the upper surface of the base plate, or higher than the upper surface of the base plate but the higher part does not exceed 5 mm.

[0007] Several positioning detection mechanisms are arranged along the length of the base plate; the positioning detection mechanism, the linear drive mechanism, and the first lifting mechanism are all electrically connected to the controller; the positioning detection mechanism cooperates with the linear drive mechanism to make the puncture mechanism move back and forth to the initial position, the final position, and several intermediate puncture positions.

[0008] The puncture needles of the puncture mechanism are arranged in rows and columns to form a puncture needle array; the width of the puncture needle array covers the width of the base plate.

[0009] The puncture mechanism includes a frame connected to a linear drive mechanism, which slides along the length of the frame; a fixed end of the first lifting mechanism is provided on the frame; a needle plate is provided at the lifting end of the first lifting mechanism, and the puncture needle is fixedly provided at the bottom of the needle plate; a fixed end of the second lifting mechanism is fixedly provided at the upper end of the needle plate, and the lifting end of the second lifting mechanism passes through the needle plate and connects to an isolation plate located below the needle plate; a through hole is provided on the isolation plate corresponding to the position of the puncture needle to allow the puncture needle to pass through; the second lifting mechanism is electrically connected to a controller.

[0010] Compared to existing technologies, this invention provides an offline tread cold puncture device that operates outside of the production line. This invention can process fully dried treads that are not on the production line, thus ensuring tread quality. Furthermore, treads of varying thicknesses can be processed using this device. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main view of this utility model.

[0012] Figure 2 This is a top view of the base plate portion of this utility model.

[0013] Figure 3 This is the main view of the puncture mechanism (adding the display of the mating relationship of the base plate on the frame that is not part of the puncture mechanism).

[0014] Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0015] Figure 5 This is a top view of the puncture mechanism.

[0016] Figure 6 yes Figure 3 Side view (showing the base plate).

[0017] Among them, 1 is the frame, 2 is the base plate, 3 is the puncture mechanism, 30 is the frame body, 31 is the first lifting mechanism, 32 is the second lifting mechanism, 33 is the puncture needle, 34 is the puncture needle plate, 35 is the isolation plate, 36 is the guide mechanism, 4 is the clearance groove, 5 is the bullseye bearing, 7 is the positioning detection mechanism, and 8 is the linear drive mechanism. Detailed Implementation

[0018] In this utility model, unless otherwise expressly specified and limited, the technical terms used in this application shall have the ordinary meaning understood by those skilled in the art. Terms such as "connected," "linked," "fixed," and "set" shall be interpreted broadly, referring to fixed connections, detachable connections, or integral connections; direct connections or indirect connections via an intermediate medium; mechanical connections or electrical connections. Unless otherwise expressly specified and limited, "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," or "over" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "under" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Relational terms such as "first," "second," etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms used in the description, such as “center,” “lateral,” “longitudinal,” “length,” “width,” “thickness,” “height,” “front,” “rear,” “left,” “right,” “up,” “down,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” “circumferential,” “clockwise,” and “counterclockwise,” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Figure 1-6As shown, a tire tread cold puncture device includes a frame 1, a base plate 2 for placing the tire tread, and a puncture mechanism 3 for puncturing. The puncture mechanism 3 is driven by a linear drive mechanism 8 mounted on the frame 1 to move along the length of the frame 1. The puncture mechanism 3 includes a first lifting mechanism 31 that drives a puncture needle 33 to move up and down for puncturing. A clearance groove 4 is provided on the base plate 2 corresponding to the position of the puncture needle 33 of the puncture mechanism 3. This invention provides an offline tire tread cold puncture device that is not on the production line. This invention can process tire treads that are not on the production line and have been thoroughly dried, thereby ensuring the quality of the tire tread. Moreover, tire treads of different thicknesses can be punctured using this invention's device. After the tire tread is placed on the base plate 2 by a worker, the tire tread does not move; instead, the linear drive mechanism 8 drives the puncture mechanism 3 to move along the length of the base plate 2 to puncture the tire tread. The puncture mechanism 3 can adopt an existing structure, as long as it can drive the puncture needle 33 to press down and puncture the tire tread.

[0020] Furthermore, the base plate 2 is provided with several rolling elements that can rotate in various directions, facilitating the unfolding of the tire tread on the base plate 2. These rolling elements avoid the position of the clearance groove 4. The highest point of each rolling element is flush with the upper surface of the base plate 2 that contacts the tire tread, or the highest point of each rolling element is higher than the upper surface of the base plate 2, but the excess does not exceed 5 mm. Because tire treads are generally quite long, they need to be folded for storage and movement. After placing the folded tire tread on the base plate 2, workers need to unfold it flat for subsequent operations. Due to the length and width of the tire tread, workers need to swing back and forth or even walk to unfold it. This invention provides rolling elements on the base plate 2. After unfolding the folded tire tread, a slight push allows it to be unfolded to a farther position along the rolling elements, thus saving manpower and facilitating the flat laying of the tire tread. The highest point of each rolling element contacts the tire tread. If the highest point of each rolling element is lower than the upper surface of the base plate 2, it will not effectively unfold the tire tread. If the highest point of the rolling element extends too far beyond the upper surface of the base plate 2, the contact point between the tread and the rolling element will be lifted after the tread unfolds on the base plate 2, affecting the flatness of the tread on the base plate 2 and thus the positioning effect. In existing puncture equipment, the rolling shafts, etc., roll along the length direction; there is neither a need nor an option for rolling in other directions. This invention addresses this need and achieves this omnidirectional rolling function.

[0021] Preferably, the balls are bullseye bearings 5 ​​evenly distributed in rows on the base plate 2; mounting grooves are provided on the base plate 2 corresponding to the positions of the bullseye bearings 5; the bullseye bearings 5 ​​are fixedly installed in the mounting grooves, and the highest position of the balls of the bullseye bearings 5 ​​is flush with the upper surface of the base plate 2, or higher than the upper surface of the base plate 2 but the excess does not exceed 5 mm. Bullseye bearings 5 ​​are also called universal ball bearings, and here they can be of the type of universal disc wheel. The bullseye bearings 5 ​​are existing bearing structures and will not be described in detail. Other rolling components can also be used for the balls, as long as they can effectively spread the tire tread.

[0022] Preferably, a plurality of positioning detection mechanisms 7 are arranged along the length direction on the base plate 2; the positioning detection mechanisms 7, the linear drive mechanism 8, and the first lifting mechanism 31 are all electrically connected to the controller; the positioning detection mechanisms 7 cooperate with the linear drive mechanism 8 to move the puncture mechanism 3 back and forth to the initial position, the final position, and several intermediate puncture positions. The positioning detection mechanisms 7 are used to protect the left and right limit positions of the initial and final positions, as well as to position the intermediate puncture positions. For example, if the length of the base plate 2 is 3 meters, and the puncture length of the puncture mechanism 3 is 800 millimeters, then the puncture mechanism 3 starts at the initial position and can move 800 millimeters each time to perform the next puncture until the entire tire tread is punctured. When the detection mechanism detects that the puncture mechanism 3 has reached the detection position, it sends a signal to the controller, and the controller controls the linear drive mechanism 8 to stop moving and perform the puncture work. The positioning detection mechanism 7 can be a limit switch, a travel switch, a photoelectric sensor, or other detection mechanism. For example, limit switches are arranged at intervals along the length direction on the edge of the frame 1. Alternatively, photoelectric sensors can be spaced along the length of the edge of the frame 1, and the transmitters of the photoelectric sensors can be placed at appropriate positions on the puncture mechanism 3. These are existing technologies and will not be described in detail here.

[0023] Furthermore, the puncture needles 33 of the puncture mechanism 3 are arranged in rows and columns to form an array of puncture needles 33; the width of the array of puncture needles 33 covers the width of the base plate 2. The width of the puncture needles 33 covering the width of the base plate 2 means that the width of the base plate 2 and the width of the array of puncture needles 33 are approximately equal; thus ensuring that when the puncture mechanism 3 punctures the tire tread, it can complete the puncture in the width direction of the tire tread in one puncture, without requiring the puncture mechanism 3 to move back and forth in the width direction of the base plate 2, thereby saving time.

[0024] Specifically: the puncture mechanism 3 includes a frame 30 connected to a linear drive mechanism 8, which slides along the length of the frame 1; a fixed end of the first lifting mechanism 31 is disposed on the frame 30; a needle plate 34 is disposed at the lifting end of the first lifting mechanism 31, and a puncture needle 33 is fixedly disposed at the bottom of the needle plate 34; a fixed end of a second lifting mechanism 32 is fixedly disposed at the upper end of the needle plate 34, and the lifting end of the second lifting mechanism 32 passes through the needle plate 34 and connects to an isolation plate 35 located below the needle plate 34; a through hole is provided on the isolation plate 35 corresponding to the position of the puncture needle 33 to allow the puncture needle 33 to pass through; the second lifting mechanism 32 is electrically connected to a controller. The first lifting mechanism 31 drives the needle plate 34 and the needle to move up and down to perform puncture. The second lifting mechanism 32 moves up and down with the lifting end of the first lifting mechanism 31, and its lifting end can drive the isolation plate 35 to move up and down. After the puncture needle 33 punctures the tire tread, it may cause the tire tread to move upwards as it moves away from the tread. At this time, the second lifting mechanism 32 moves upwards along with the first lifting mechanism 31, but the lower end of the second lifting mechanism 32 can extend to press against the tire tread until the puncture needle 33 leaves the tire tread. Then, the lower end of the second lifting mechanism 32 retracts, causing the isolation plate 35 to leave the tire tread. Then, the first lifting mechanism 31 moves the second lifting mechanism 32 upwards to its initial position. The isolation plate 35 can press against the tire tread and prevent it from moving off the base plate 2 when the puncture needle 33 peels off. In addition, when the puncture needle 33 punctures the tire tread, the lifting ends of the first lifting mechanism 31 and the second lifting mechanism 32 can extend simultaneously, and the isolation plate 35 can also press against the tire tread to some extent during puncture. Of course, the fixed end of the second lifting mechanism 32 can also be set on the frame 30, as long as the same function is achieved by adjustment.

[0025] In this utility model, the first lifting mechanism 31 can be one or more large cylinders arranged side by side; the second lifting mechanism 32 can be one or more small cylinders arranged side by side, for example, in the embodiment shown in the drawings, there are a total of 2 large cylinders and 4 small cylinders. A guide mechanism 36 can be provided between the isolation plate 35 and the needle plate 34 to ensure that the direction does not tilt when they slide relative to each other, for example, by providing a guide rod and a linear bearing that cooperate with each other; a linear bearing is provided on the needle plate 34; a guide rod is fixedly provided at the upper end of the isolation plate 35; the guide rod slides through the linear bearing for guidance and positioning. A guide mechanism 36 can also be provided between the needle plate 34 and the frame 30, such as a slide rail slider mechanism to ensure that the direction of the needle plate 34 is accurate and does not tilt during the lifting process; for example, a slider is provided on the needle plate 34 and a guide rail is provided on the frame 30. These guide mechanisms 36 are common structures and will not be described in detail. A guide mechanism 36 can also be provided between the frame 30, the needle plate 34, and the isolation plate 35. Additionally, slide rails can be installed on both sides of the frame 30 along the width direction of the base plate 2, and sliders that cooperate with the slide rails are installed on both sides of the frame 30. The linear drive mechanism 8 may include a translation motor that can rotate in both directions, and the translation motor drives a synchronous pulley to rotate the synchronous belt. The frame 30 of the puncture mechanism 3 is connected to the synchronous belt to realize the linear movement of the puncture mechanism 3. This utility model can be controlled by a controller to control the sequential action of each component, or it can be manually controlled to achieve the action of each part.

[0026] In practice: The material to be pierced is placed on the base plate 2 and quickly unfolded by the rolling element. The controller controls the translation motor to drive the synchronous belt to move the piercing device along the length of the base plate 2. The position of the piercing tool and the piercing hole is detected and positioned by the limit switch. The large air cylinder controls the piercing needle 33 to fall, completing the piercing action. After the controller controls the large air cylinder to reach its position, the large air cylinder returns. The lower air cylinder drives the isolation plate 35 to press down on the material, preventing the material from being lifted up with the piercing needle 33, thus completing the piercing.

[0027] The technical features of the embodiments described above can be combined in any way, and as long as there is no contradiction in the combination of these technical features, they should all be considered within the scope of this specification. Without departing from the overall concept of this utility model, any equivalent substitutions or modifications made to the technical solution of this utility model, as well as any changes and improvements, should also be considered within the protection scope of this utility model.

Claims

1. A cold puncture device for a tire tread, comprising a frame, a base plate arranged on the frame for placing the tire tread, and a puncture mechanism for puncturing; characterized in that: The puncture mechanism is driven by a linear drive mechanism mounted on the frame to move along the length of the frame; the puncture mechanism includes a first lifting mechanism that drives a puncture needle to move up and down for puncture; a clearance groove is provided on the base plate corresponding to the position of the puncture needle of the puncture mechanism.

2. The tread cold puncture device according to claim 1, characterized in that: The base plate is provided with a plurality of rolling elements that can rotate in various directions to facilitate the unfolding of the tire tread on the base plate; the rolling elements avoid the position of the clearance groove; the highest position of the rolling elements is flush with the upper surface of the base plate that contacts the tire tread, or the highest position of the rolling elements is higher than the upper surface of the base plate but the higher part does not exceed 5 mm.

3. The tread cold puncture device according to claim 2, characterized in that: The rolling elements are bullseye bearings evenly arranged in rows on the base plate; the base plate is provided with mounting grooves corresponding to the positions of the bullseye bearings; the bullseye bearings are fixedly installed in the mounting grooves, and the highest position of the balls of the bullseye bearings is flush with the upper surface of the base plate, or higher than the upper surface of the base plate but the higher part does not exceed 5 mm.

4. The tread cold puncture device according to any one of claims 1-3, characterized in that: Several positioning detection mechanisms are arranged along the length of the base plate; the positioning detection mechanism, the linear drive mechanism, and the first lifting mechanism are all electrically connected to the controller; the positioning detection mechanism cooperates with the linear drive mechanism to make the puncture mechanism move back and forth to the initial position, the final position, and several intermediate puncture positions.

5. The tread cold puncture device according to claim 4, characterized in that: The puncture needles of the puncture mechanism are arranged in rows and columns to form a puncture needle array; the width of the puncture needle array covers the width of the base plate.

6. The tread cold puncture device according to claim 4, characterized in that: The puncture mechanism includes a frame connected to a linear drive mechanism, which slides along the length of the frame; a fixed end of the first lifting mechanism is provided on the frame; a needle plate is provided at the lifting end of the first lifting mechanism, and the puncture needle is fixedly provided at the bottom of the needle plate; a fixed end of the second lifting mechanism is fixedly provided at the upper end of the needle plate, and the lifting end of the second lifting mechanism passes through the needle plate and connects to an isolation plate located below the needle plate; a through hole is provided on the isolation plate corresponding to the position of the puncture needle to allow the puncture needle to pass through; the second lifting mechanism is electrically connected to a controller.

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