Tire vacuumizing two-half-mold mold

Abstract

The utility model relates to the technical field of vulcanized tire molds, in particular to a tire vacuumizing two-half mold which comprises an upper mold and a lower mold, a plurality of groups of positioning rods are arranged at the bottom of the upper mold, a plurality of groups of positioning grooves matched with the positioning rods are formed in the lower mold, a plurality of groups of air pipes are arranged on one side of the lower mold, and a material injection pipe is arranged on the upper mold. The air pipe is used for vacuumizing the space between the upper mold and the lower mold, and a fixing assembly is arranged on one side of the upper mold and one side of the lower mold. A knocking assembly is arranged on the other side of the upper mold; the fixing assembly is used for tightly fixing the upper mold and the lower mold; the knocking assembly is used for knocking when the upper mold and the lower mold are attached. Compared with the prior art, after material injection is completed through the material injection pipe, the knocking assembly knocks the upper mold and the lower mold to assist mold separation, and the demolding efficiency is improved; and efficient and accurate sealing is achieved, it is ensured that no bubble exists in the mold cavity in the material injection process, and the product quality is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of vulcanized tire mold technology, and in particular to a two-part mold for vacuuming tires. Background Technology

[0002] Two-part molds are widely used in the tire vulcanization process. During tire vulcanization, the tire blank is first placed into the mold cavity. After the mold is closed, under the pressure inside the bladder, the tire blank continuously fills every tread hole, letter, pattern, groove, and inner contour of the mold. At the same time, the gas in these parts needs to be discharged from the cavity, otherwise it will cause air pockets and insufficient rubber in the tire. In order to discharge the gas smoothly, many air holes need to be processed on the mold. However, due to improper number and position of air holes, as well as blockage of air holes, air pockets and insufficient rubber in the tire will still occur. Sometimes we try to avoid this problem by increasing the number of air holes, but this will increase the amount of labor required to remove rubber fibers and affect the appearance of the tire.

[0003] In the prior art, Chinese patent document CN206983063U proposes a vacuum-sealing two-part mold, including a mold shell part, which includes an upper mold shell and a lower mold shell. The lower end of the upper mold shell is positioned to fit with the upper end of the lower mold shell. A sealing groove is provided on the mating surface, and a first sealing ring is provided in the sealing groove. During the tire vulcanization process, the gas in the cavity between the tire blank and the tread ring, side plate, and steel rim is extracted, making it easier for the rubber to fill each tread hole, lettering, pattern, and groove, preventing the tire from lacking rubber due to air pockets, thus producing a more aesthetically pleasing tire. However, in actual use, insufficient sealing performance during vacuuming may lead to gas residue, affecting product quality. During mold opening and closing, the lack of efficient fixing and assisted demolding functions can easily lead to mold displacement or product damage. Therefore, this utility model proposes a tire vacuum-sealing two-part mold to meet the requirements of enhanced mold operation stability, avoiding mold misalignment affecting production accuracy, and ensuring no air bubbles in the mold cavity during the injection process. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a two-part mold for vacuuming tires, so as to solve the problem that the lack of efficient fixing and demolding function during the mold opening and closing process can easily lead to mold displacement or product damage.

[0005] To achieve the above objectives, this utility model provides a two-part vacuuming mold for tires, comprising an upper mold and a lower mold. The bottom of the upper mold is provided with multiple sets of positioning rods, and the lower mold has multiple sets of positioning grooves adapted to the positioning rods. One side of the lower mold is provided with multiple sets of air pipes, and the upper mold is provided with an injection pipe. The air pipes are used to create a vacuum between the upper and lower molds. A fixing component is provided on one side of the upper and lower molds; a striking component is provided on the other side of the upper mold. The fixing component is used to tightly fix the upper and lower molds; the striking component is used to strike the upper and lower molds when they are in contact.

[0006] Preferably, the fixing assembly includes an upper fixing plate disposed on the upper mold and a lower fixing plate disposed on the lower mold. The lower fixing plate and the upper fixing plate are symmetrically disposed. A rotating rod is disposed on both the lower fixing plate and the upper fixing plate. A contact arc plate is disposed on the rotating rod. A deflection arm is rotatably disposed at the bottom of the contact arc plate. A rotating rod is disposed on one side of the deflection arm.

[0007] Preferably, the striking assembly includes a set of fixed seats disposed on the upper mold, a connecting rod rotatably disposed on the inner wall of the fixed seats, a reciprocating double screw disposed on the connecting rod, limit plates disposed at both ends of the reciprocating double screw, a rotating collar threaded on the reciprocating double screw, a connecting arm disposed at the bottom of the rotating collar, and a contact head disposed at the bottom of the connecting arm.

[0008] Preferably, the striking assembly further includes a drive gear disposed at the center of the connecting rod, a synchronous gear plate meshing on the drive gear, a limit cover plate disposed on the upper mold, one end of the synchronous gear plate passing through the limit cover plate, and a push head disposed at one end of the synchronous gear plate.

[0009] Preferably, one end of both the lower fixing plate and the upper fixing plate is provided with a contact plate, and the contact plate has a triangular structure.

[0010] Preferably, a return spring is provided at one end of the deflection arm, and a pull ball head is provided at the other end of the deflection arm.

[0011] Preferably, multiple sets of contact grooves are formed on one side of the contact head.

[0012] The beneficial effects of this utility model are:

[0013] 1. Through the precise cooperation of multiple sets of positioning rods and positioning grooves, the accurate alignment between the upper mold and the lower mold is ensured. During the vacuuming process, multiple sets of air pipes are connected to the external vacuum system to extract the air between the upper mold and the lower mold to form a negative pressure and achieve a sealing effect. The fixing component is used to fasten the upper mold and the lower mold to prevent displacement during vacuuming and injection. After the injection is completed through the injection pipe, the striking component strikes the upper mold and the lower mold to assist in mold separation and improve demolding efficiency.

[0014] It achieves efficient and precise sealing, ensuring no air bubbles in the mold cavity during injection, significantly improving product quality. The fixing components enhance the operational stability of the mold and prevent mold misalignment from affecting production accuracy. The striking components effectively reduce demolding resistance, reduce damage to the mold and the product, extend the mold's service life, and improve production efficiency.

[0015] The symmetrical arrangement of the lower and upper fixed plates secures the upper and lower molds. The triangular structure of the contact plate enhances the stability of the support during fixing. The rotating rod cooperates with the contact arc plate, causing the contact arc plate to rotate around the axis of the rotating rod, thus achieving a locking effect. The rotation of the deflection arm transmits external force to the rotating rod, locking the fixing component onto the lower fixed plate. One end of the deflection arm automatically resets via a return spring. The pull ball head provides auxiliary adjustment, ensuring the flexibility and precision of the fixing component operation. This design allows for quick and reliable fixing of the upper and lower molds, improving operational stability. The pull ball head further enhances the convenience and accuracy of operation. In addition, the cooperative design of the contact arc plate and the deflection arm ensures even distribution of fixing force, preventing mold deformation or displacement, and improving mold life and product quality.

[0016] When the upper and lower molds are in contact and fixed, pushing the push head causes the synchronous gear plate to rotate, which in turn drives the drive gear. The rotation of the drive gear causes the connecting rod to rotate synchronously, which in turn drives the reciprocating twin screw. This causes the rotating sleeve to rotate around the axis of the reciprocating twin screw, which in turn causes the connecting arm to drive the contact head to rotate simultaneously. This achieves the striking of the surfaces of the upper and lower molds. Multiple contact grooves on the contact head increase the contact area with the surfaces of the upper and lower molds, ensuring uniform transmission of striking force. Simultaneously, the meshing effect of the drive gear and the synchronous gear plate ensures the stability and precision of the striking action, reducing offset and stress concentration during mold separation. This effectively improves demolding efficiency and product quality, and overall enhances the automation level and service life of the mold. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first-person perspective schematic diagram of the present invention;

[0019] Figure 2 This is a second-view schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the closed state of the fixing component of this utility model;

[0021] Figure 4 This is a schematic diagram of the fixed component in the separated state of this utility model;

[0022] Figure 5 This is a schematic diagram of the striking component of this utility model.

[0023] The markings in the diagram are as follows: 1. Upper mold; 2. Lower mold; 3. Positioning rod; 4. Positioning groove; 5. Air pipe; 6. Injection pipe; 7. Lower fixing plate; 8. Upper fixing plate; 9. Contact plate; 10. Contact arc plate; 11. Rotating rod; 12. Deflection arm; 13. Rotating rod; 14. Pulling ball head; 15. Return spring; 16. Fixed seat; 17. Connecting rod; 18. Reciprocating twin screw; 19. Limiting plate; 20. Rotating collar; 21. Connecting arm; 22. Contact head; 23. Contact groove; 24. Drive gear; 25. Synchronizing gear plate; 26. Limiting cover plate; 27. Push head. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1-5 As shown, a two-part vacuuming mold for tires includes an upper mold 1 and a lower mold 2. The bottom of the upper mold 1 is provided with multiple sets of positioning rods 3. The lower mold 2 has multiple sets of positioning grooves 4 adapted to the positioning rods 3. One side of the lower mold 2 is provided with multiple sets of air pipes 5. The upper mold 1 is provided with an injection pipe 6. The air pipes 5 are used to create a vacuum between the upper mold 1 and the lower mold 2. A fixing component is provided on one side of the upper mold 1 and the lower mold 2; a striking component is provided on the other side of the upper mold 1. The fixing component is used to tightly fix the upper mold 1 and the lower mold 2; the striking component is used to strike the upper mold 1 and the lower mold 2 when they are in contact.

[0027] The precise alignment between the upper mold 1 and the lower mold 2 is ensured by the precise cooperation of multiple sets of positioning rods 3 and positioning grooves 4. During the vacuuming process, multiple sets of air pipes 5 are connected to the external vacuum system to extract the air between the upper mold 1 and the lower mold 2 to form a negative pressure and achieve a sealing effect. The fixing component is used to fasten the upper mold 1 and the lower mold 2 to prevent displacement during vacuuming and material injection. After the material is injected through the injection pipe 6, the striking component strikes the upper mold 1 and the lower mold 2 to assist in mold separation and improve demolding efficiency.

[0028] It achieves efficient and precise sealing, ensuring no air bubbles in the mold cavity during injection, significantly improving product quality. The fixing components enhance the operational stability of the mold and prevent mold misalignment from affecting production accuracy. The striking components effectively reduce demolding resistance, reduce damage to the mold and the product, extend the mold's service life, and improve production efficiency.

[0029] like Figures 1-4As shown, the fixing assembly includes an upper fixing plate 8 on the upper mold 1 and a lower fixing plate 7 on the lower mold 2. The lower fixing plate 7 and the upper fixing plate 8 are symmetrically arranged. One end of the lower fixing plate 7 and the upper fixing plate 8 is provided with a contact plate 9, which has a triangular structure. Both the lower fixing plate 7 and the upper fixing plate 8 are provided with a rotating rod 11. The rotating rod 11 is provided with a contact arc plate 10. The bottom of the contact arc plate 10 is rotatably provided with a deflection arm 12. One side of the deflection arm 12 is provided with a rotating rod 13. One end of the rotating rod 13 is provided on the lower fixing plate 7. One end of the deflection arm 12 is provided with a return spring 15 and a pull ball head 14.

[0030] The symmetrical arrangement of the lower fixing plate 7 and the upper fixing plate 8 achieves the fixation of the upper mold 1 and the lower mold 2. The triangular structure of the contact plate 9 enhances the support stability during fixation. The rotating rod 11 cooperates with the contact arc plate 10, causing the contact arc plate 10 to rotate around the axis of the rotating rod 11, thereby achieving a locking effect. The rotation of the deflection arm 12 transmits external force to the rotating rod 13, causing it to lock the fixing assembly onto the lower fixing plate 7. One end of the deflection arm 12 achieves automatic reset through the return spring 15. The pulling ball head 14 is used to provide... The auxiliary adjustment function ensures the flexibility and precision of the fixed component operation; it can quickly and reliably fix the upper mold 1 and the lower mold 2. By pulling the ball head 14, the deflection arm 12 can be driven to rotate the contact arc plate 10, thereby separating the lower fixed plate 7 and the upper fixed plate 8, which improves the stability of operation. Pulling the ball head 14 further improves the convenience and accuracy of operation. In addition, the cooperative design of the contact arc plate 10 and the deflection arm 12 makes the fixing force evenly distributed, avoiding mold deformation or displacement, and improving the service life of the mold and the quality of the product.

[0031] like Figure 1 , Figure 2 and Figure 5 As shown, the striking assembly includes a set of fixed seats 16 mounted on the upper mold 1. A connecting rod 17 is rotatably mounted on the inner wall of the fixed seat 16. A reciprocating double screw 18 is mounted on the connecting rod 17. Limit plates 19 are mounted at both ends of the reciprocating double screw 18. A rotating collar 20 is threaded onto the reciprocating double screw 18. A connecting arm 21 is mounted at the bottom of the rotating collar 20. A contact head 22 is mounted at the bottom of the connecting arm 21. Multiple contact grooves 23 are formed on one side of the contact head 22. The striking assembly also includes a drive gear 24 mounted at the center of the connecting rod 17. A synchronous gear plate 25 meshes with the drive gear 24. A limit cover plate 26 is mounted on the upper mold 1. One end of the synchronous gear plate 25 passes through the limit cover plate 26. A push head 27 is mounted at one end of the synchronous gear plate 25.

[0032] When the upper mold 1 and the lower mold 2 are in contact and fixed, pushing the push head 27 causes the synchronous gear plate 25 to drive the drive gear 24 to rotate. When the drive gear 24 rotates, the connecting rod 17 rotates synchronously, which in turn drives the reciprocating twin screw 18 to rotate. This causes the rotating collar 20 to rotate around the axis of the reciprocating twin screw 18, which in turn causes the connecting arm 21 to drive the contact head 22 to rotate simultaneously, thereby achieving the striking of the surfaces of the upper mold 1 and the lower mold 2. The multiple sets of contact grooves 23 on the contact head 22 increase the contact area with the surfaces of the upper mold 1 and the lower mold 2, ensuring the uniform transmission of striking force. At the same time, the meshing effect of the drive gear 24 and the synchronous gear plate 25 achieves the stability and accuracy of the striking action, reduces the offset and stress concentration problems during mold separation, effectively improves demolding efficiency and product quality, and improves the overall automation level and service life of the mold.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0034] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire vacuuming two-part mold mold comprising an upper mold (1) and a lower mold (2), characterized in that, The bottom of the upper mold (1) is provided with a plurality of sets of positioning rods (3), the lower mold (2) is provided with a plurality of sets of positioning grooves (4) matched with the positioning rods (3), one side of the lower mold (2) is provided with a plurality of sets of air pipes (5), the upper mold (1) is provided with a material injection pipe (6), the air pipes (5) are used for vacuumizing between the upper mold (1) and the lower mold (2), one side of the upper mold (1) and the lower mold (2) is provided with a fixing assembly; the other side of the upper mold (1) is provided with a knocking assembly; the fixing assembly is used for tightly fixing the upper mold (1) and the lower mold (2); the knocking assembly is used for knocking when the upper mold (1) and the lower mold (2) are adhered.

2. A split mold for vacuuming a tire according to claim 1, wherein, The fixing assembly comprises an upper fixing plate (8) arranged on the upper mold (1) and a lower fixing plate (7) arranged on the lower mold (2), the lower fixing plate (7) and the upper fixing plate (8) are symmetrically arranged, rotating rods (11) are arranged on the lower fixing plate (7) and the upper fixing plate (8), contact arc plates (10) are arranged on the rotating rods (11), deflection arms (12) are rotationally arranged at the bottom of the contact arc plates (10), and rotating rods (13) are arranged on one side of the deflection arms (12).

3. A split mold for vacuuming a tire according to claim 1, wherein, The knocking assembly comprises a set of fixing seats (16) arranged on the upper mold (1), connecting rods (17) are rotationally arranged on the inner wall of the fixing seats (16), reciprocating double screws (18) are arranged on the connecting rods (17), limiting plates (19) are arranged at the two ends of the reciprocating double screws (18), rotating sleeves (20) are threadedly arranged on the reciprocating double screws (18), connecting arms (21) are arranged at the bottom of the rotating sleeves (20), and contact heads (22) are arranged at the bottom of the connecting arms (21).

4. A split mold for vacuuming a tire according to claim 3, wherein, The knocking assembly further comprises a driving gear (24) arranged at the center of the connecting rod (17), the driving gear (24) is engaged with a synchronous toothed plate (25), a limiting cover plate (26) is arranged on the upper mold (1), one end of the synchronous toothed plate (25) penetrates through the limiting cover plate (26), and a pushing head (27) is arranged at one end of the synchronous toothed plate (25).

5. A split mold for vacuuming a tire according to claim 2, wherein, One end of the lower fixing plate (7) and one end of the upper fixing plate (8) are provided with contact plates (9), and the contact plates (9) are triangular structures.

6. A split mold for vacuuming a tire according to claim 5, wherein, One end of the deflection arm (12) is provided with a reset spring (15), and one end of the deflection arm (12) is provided with a pulling ball head (14).

7. A split mold for vacuuming a tire according to claim 3, wherein, A plurality of sets of contact grooves (23) are arranged on one side of the contact head (22).

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