Automatic glue cleaning structure for center rod

Abstract

The utility model discloses an automatic glue cleaning structure of a center rod, which belongs to the technical field of vulcanizing machines and comprises the center rod capable of moving along the vertical direction. The cylinder cover is sleeved on the central rod and forms a containing groove with the central rod; the guide sleeve is arranged in the accommodating groove and is in clearance fit with the center rod; the sealing ring is embedded in the accommodating groove; the pressing plate sleeves the central rod and is in clearance fit with the central rod; the pressing plate is fixedly connected with the cylinder cover and blocks the containing groove. A conical seat surrounding the center rod is arranged on the pressing plate, the peripheral surface of the conical seat is a conical surface, the conical surface gradually approaches the center rod in the vertical upward direction, and the conical surface and the inner wall surface of the conical seat intersect to form a circumferential sharp corner; the conical surface of the conical seat is intersected with the inner wall surface of the conical seat to form a circumferential sharp corner, so that rubber adhered to the circumferential surface of the center rod can be automatically scraped in the descending process of the center rod, the rubber is prevented from being accumulated in gaps among the center rod, the sealing ring and the pressing plate, and the service life is prolonged; and the conical seat can also provide a guiding function.

Description

Technical Field

[0001] The utility model relates to the technical field of vulcanizing machines, in particular to an automatic glue clearing structure for a central rod. Background Art

[0002] The vulcanizer is a key equipment in the tire manufacturing process. The guide sealing part of the central mechanism of the traditional vulcanizer is usually composed of three parts: a guide sleeve, a sealing ring and a pressure plate. Among them, the pressure plate is only used to adjust the pressure of the sealing ring, and the gap between it and the center rod is large.

[0003] During the vulcanization process, the green tire is pressed outward onto the mold surface through the bladder, and the bladder is expanded by the medium inside the green tire, and transfers heat and pressure to the green tire to achieve vulcanization of the green tire. At present, the material of the bladder is usually rubber. Affected by factors such as excessive oxygen content in the medium introduced, excessive vacuumization of the bladder, the material of the bladder, and insufficient cooling water circulation after vulcanization, the inner surface of the bladder will age and vaporize, causing part of the rubber to fall off the inner surface of the bladder, and some of the fallen rubber will adhere to the center rod. During the descent of the center rod, the rubber adhered to the center rod will accumulate between the center rod and the sealing ring and the pressure plate, causing the resistance of the center rod to increase, and it is easy to cause problems such as breakage of the connecting screws, damage to the sealing ring, and inability of the vulcanization equipment to operate.

[0004] Therefore, it is an urgent problem to be solved at this stage to develop and design an automatic glue cleaning structure that can automatically remove the rubber adhering to the center rod when the center rod descends, prevent the rubber falling off the capsule from damaging the pressure plate, sealing ring and screws, and improve the service life. Utility Model Content

[0005] In response to the problems existing in the prior art, the utility model provides an automatic glue cleaning structure for a center rod, a conical seat is provided on the upper surface of the pressure plate, the conical surface of the conical seat intersects with its inner wall surface to form a circular sharp angle, during the descending process of the center rod, the circular sharp angle can automatically scrape off the rubber material adhering to the circumferential surface of the center rod, and make the scraped rubber material away from the center rod, thereby avoiding the accumulation of rubber material in the gap between the center rod and the sealing ring and the pressure plate, and there will be no problems such as breakage of connecting screws, damage of sealing rings, and inability of vulcanizing equipment to operate, thereby improving the service life; at the same time, the conical seat can also provide a certain guiding function, which can improve the stability of the center rod during lifting and lowering.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The utility model provides a central rod automatic glue cleaning structure, comprising:

[0008] A central rod, which is arranged vertically and can move along its axial direction;

[0009] A cylinder cover, wherein the cylinder cover is sleeved on the center rod; a receiving groove is formed between the cylinder cover and the center rod;

[0010] A guide sleeve, the guide sleeve is arranged in the receiving groove, and the guide sleeve is loosely matched with the center rod;

[0011] A sealing ring, the sealing ring is embedded in the receiving groove and located above the guide sleeve;

[0012] A pressure plate, which is sleeved on the center rod and loosely matched with the center rod; the pressure plate is located above the sealing ring, and is fixedly connected to the cylinder head and seals the receiving groove; a conical seat is provided on the upper surface of the pressure plate, and the conical seat is arranged around the center rod, and the outer peripheral surface of the conical seat is set as a conical surface, and the conical surface gradually approaches the axis of the center rod in the vertical upward direction, and the conical surface intersects with the inner wall surface of the conical seat to form a circular sharp angle.

[0013] As a preferred technical solution, the generatrix of the conical surface is set as a straight line, and the angle between the generatrix of the conical surface and the axis of the center rod is set to 20-70°;

[0014] Alternatively, the generatrix of the conical surface is set as an arc.

[0015] As a preferred technical solution, a vertical connecting surface is provided between the lower edge of the conical surface and the upper surface of the pressing plate;

[0016] Alternatively, the lower edge of the conical surface is directly connected to the upper surface of the pressing plate;

[0017] Alternatively, an arc-shaped connecting surface is provided between the lower edge of the conical surface and the upper surface of the pressing plate.

[0018] As a preferred technical solution, the pressure plate and the cylinder head are fixedly connected by connecting screws; a fixing hole is provided on the pressure plate, and a threaded hole is provided on the cylinder head, and the connecting screw passes through the fixing hole and is threadedly connected to the threaded hole.

[0019] As a preferred technical solution, the cylinder head is provided with an annular cavity at a position corresponding to the pressure plate, the pressure plate is placed in the annular cavity, and the upper surface of the pressure plate is flush with the upper end surface of the cylinder head;

[0020] and / or, the upper surface of the pressure plate and the upper end surface of the cylinder head are both set as horizontal planes;

[0021] And / or, the fixing hole is configured as a countersunk hole.

[0022] As a preferred technical solution, the conical seat and the pressure plate are configured as an integrally formed structure or a split structure.

[0023] As a preferred technical solution, the conical seat and the center rod are clearance-matched, and the clearance between the inner wall of the conical seat and the center rod is set to 0.08-0.2 mm.

[0024] As a preferred technical solution, the lower end of the sealing ring abuts against the guide sleeve, and the upper end of the sealing ring abuts against the pressure plate.

[0025] As a preferred technical solution, it also includes a ring seat, the cylinder cover is fixed on the ring seat; the ring seat is provided with a lower clamping ring and a lower auxiliary steel ring, and the lower clamping ring and the lower auxiliary steel ring can clamp the lower edge of the capsule; the center rod is provided with an upper clamping ring, and the upper clamping ring is provided with an auxiliary steel ring, and the upper clamping ring and the auxiliary steel ring can clamp the upper edge of the capsule.

[0026] As a preferred technical solution, the lowest position of the upper clamping ring moving with the central rod is higher than the height of the sharp corner.

[0027] The beneficial effects of the utility model are as follows:

[0028] 1. A conical seat is provided on the upper surface of the pressing plate of the utility model, and the conical surface of the conical seat intersects with its inner wall surface to form a circular sharp angle. During the descending process of the center rod, the circular sharp angle can automatically scrape the rubber material adhering to the peripheral surface of the center rod, and keep the scraped rubber material away from the center rod, thereby avoiding the accumulation of rubber material in the gap between the center rod and the sealing ring and the pressing plate, reducing the harm of the capsule rubber material falling off to the sealing ring, the pressing plate and the connecting screws, and preventing the connecting screws from breaking, the sealing ring from being damaged, the vulcanizing equipment from being unable to operate, and other problems, thereby improving the service life.

[0029] 2. The conical seat of the utility model can extend the length of the pressure plate in the vertical direction. The conical seat can also provide a certain guiding function, reduce the shaking space of the center rod during movement, and improve the stability of the center rod during lifting.

[0030] 3. The structure of the pressing plate and the conical seat of the utility model is simple and reliable; there is no need to modify other structures of the traditional vulcanizer, the modification period is short, and the impact on normal production is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a first embodiment of a central rod automatic glue cleaning structure of the utility model;

[0032] Figure 2 for Figure 1 A magnified image of area A;

[0033] Figure 3 for Figure 2 Magnified view of area B.

[0034] In the figure: 1-center rod, 11-upper clamping ring, 12-pair of steel rings, 2-cylinder cover, 21-accommodating groove, 22-threaded hole, 23-annular concave cavity, 3-guide sleeve, 4-sealing ring, 5-pressing plate, 51-connecting screw, 52-fixing hole, 53-vertical connecting surface, 6-conical seat, 61-conical surface, 62-pointed corner, 7-ring seat, 71-lower clamping ring, 72-lower pair of steel rings, 8-capsule. DETAILED DESCRIPTION

[0035] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0036] Please refer to Figure 1-Figure 3 , which is an embodiment of a center rod automatic glue cleaning structure provided by the utility model, comprising a vertically arranged center rod 1, a cylinder head 2, a guide sleeve 3, a sealing ring 4 and a pressing plate 5 are all sleeved on the center rod 1, the cylinder head 2, the guide sleeve 3 and the pressing plate 5 are all clearance-matched with the center rod 1, and the center rod 1 can move along its axis, i.e., in the vertical direction, relative to the cylinder head 2, the guide sleeve 3, the sealing ring 4 and the pressing plate 5; an accommodating groove 21 is formed between the cylinder head 2 and the center rod 1, the guide sleeve 3 and the sealing ring 4 are both embedded in the accommodating groove 21, the guide sleeve 3 is located below the sealing ring 4, the guide sleeve 3 abuts against the horizontally arranged groove wall of the accommodating groove 21 to achieve positioning, and the guide sleeve 3 provides a guiding effect for the movement of the center rod 1; the pressing plate 5 is located above the sealing ring 4, the lower end of the sealing ring 4 abuts against the guide sleeve 3, the upper end of the sealing ring 4 abuts against the pressing plate 5, and the pressing plate 5 abuts against the cylinder head 2 The cover 2 is fixedly connected and seals the accommodating groove 21. While positioning the sealing ring 4, the pressure of the sealing ring 4 can be controlled and adjusted, so that the sealing ring 4 seals the gap between the cylinder cover 2 and the center rod 1 and forms a reciprocating dynamic seal with the center rod 1 to prevent leakage of the high-temperature and high-pressure medium in the capsule 8; a conical seat 6 is provided on the upper surface of the pressing plate 5, and the conical seat 6 is arranged around the center rod 1. The outer peripheral surface of the conical seat 6 is set as a conical surface 61, and the conical surface 61 gradually approaches the axis of the center rod 1 in the vertical upward direction. The conical surface 61 intersects with the inner wall surface of the conical seat 6 to form a circular sharp corner 62. During the descending process of the center rod 1, the circular sharp corner 62 can automatically scrape the rubber material adhered to the peripheral surface of the center rod 1, avoid the accumulation of rubber material in the gap between the center rod 1 and the sealing ring 4 and the pressing plate 5, and improve the service life of the pressing plate 5 and the sealing ring 4.

[0037] It should be noted that the generatrix of the conical surface 61 is set as a straight line, and the angle between the generatrix of the conical surface 61 and the axis of the center rod 1 is preferably set to 20-70°; specifically, the size of the angle between the conical surface 61 and the axis of the center rod 1 should be adjusted according to actual usage. When the angle is too large, the scraping effect on the rubber will be poor, causing more rubber to be blocked in the sealing ring 4 and the pressure plate 5; when the angle is too small, the circular sharp corner 62 is prone to breakage when the force is uneven, thereby affecting the scraping effect of the rubber; in other embodiments, the generatrix of the conical surface 61 can also be set as an arc, and the arc can be concave or convex, so as to ensure that the scraped rubber slides smoothly along the conical surface 61.

[0038] Specifically, the fitting clearance between the inner wall of the conical seat 6 and the central rod 1 is preferably set to 0.08-0.2 mm.

[0039] In this embodiment, please refer to Figure 2 and Figure 3 The pressure plate 5 and the cylinder head 2 are fixedly connected by connecting screws 51; a fixing hole 52 is provided on the pressure plate 5, and a threaded hole 22 is provided on the cylinder head 2. The connecting screws 51 pass through the fixing hole 52 and are threadedly connected with the threaded hole 22 to achieve the fixed connection between the pressure plate 5 and the cylinder head 2; specifically, an annular cavity 23 is preferably provided at the position of the cylinder head 2 corresponding to the pressure plate 5, and the pressure plate 5 is placed in the annular cavity 23. The upper surface of the pressure plate 5 is flush with the upper end surface of the cylinder head 2, which can better determine the installation position and installation depth of the pressure plate 5, and is convenient for controlling the pressure of the pressure plate 5 on the sealing ring 4; more preferably, the upper surface of the pressure plate 5 and the upper end surface of the cylinder head 2 are set to be horizontal planes, which are convenient for processing and installation.

[0040] For further information, please refer to Figure 2 and Figure 3 The fixing hole 52 is set as a countersunk hole, and the head of the connecting screw 51 can be immersed in the countersunk hole to avoid the head of the connecting screw 51 being exposed and causing interference.

[0041] In this embodiment, please refer to Figure 2 and Figure 3 A vertical connecting surface 53 is provided between the lower edge of the conical surface 61 and the upper surface of the pressing plate 5, and the rubber scraped off by the circular sharp corner 62 can slide smoothly along the conical surface 61, which is convenient for collection and cleaning; in other embodiments, the lower edge of the conical surface 61 and the upper surface of the pressing plate 5 can also be directly connected or connected through an arc-shaped connecting surface, so that the scraped rubber can slide smoothly downward along the conical surface 61 and avoid the scraped rubber from accumulating at the lower edge of the conical surface 61.

[0042] For details, please refer to Figure 2 and Figure 3The conical seat 6 and the pressing plate 5 are preferably configured as an integrally formed structure, and the conical seat 6 and the pressing plate 5 have a high connection strength to ensure that the circular sharp corner 62 stably and continuously scrapes the rubber on the circumferential surface of the center rod 1; in other embodiments, the conical seat 6 and the pressing plate 5 can also be a split structure, and the conical seat 6 is fixed to the pressing plate 5 by welding or bolting, subject to the conical seat 6 being able to be firmly connected to the pressing plate 5.

[0043] In this embodiment, please refer to Figure 1 The utility model also includes a ring seat 7, and the cylinder head 2 is fixed on the ring seat 7; a lower clamping ring 71 and a lower auxiliary steel ring 72 are provided on the ring seat 7, and the lower clamping ring 71 and the lower auxiliary steel ring 72 can clamp the lower edge of the capsule 8; an upper clamping ring 11 is provided on the center rod 1, and an auxiliary steel ring 12 is provided on the upper clamping ring 11, and the upper clamping ring 11 and the auxiliary steel ring 12 can clamp the upper edge of the capsule 8 to achieve the positioning of the capsule 8; the tire blank is pressed outwardly onto the mold surface through the capsule 8, and the capsule 8 is expanded by the medium inside the tire blank, and transfers heat and pressure to the tire blank to achieve the vulcanization of the tire.

[0044] It should be noted that the lowest position of the upper clamp ring 11 moving with the center rod 1 should be higher than the height of the sharp corner 62 to ensure that the circular sharp corner 62 does not interfere with the descent of the center rod 1.

[0045] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A center rod automatic glue cleaning structure, characterized in that: include: A central rod (1), the central rod (1) being arranged vertically and being movable along its axial direction; A cylinder cover (2), wherein the cylinder cover (2) is sleeved on the center rod (1); a receiving groove (21) is formed between the cylinder cover (2) and the center rod (1); A guide sleeve (3), the guide sleeve (3) being arranged in the receiving groove (21), the guide sleeve (3) and the center rod (1) being in clearance fit; A sealing ring (4), the sealing ring (4) being embedded in the receiving groove (21) and being located above the guide sleeve (3); A pressure plate (5), wherein the pressure plate (5) is sleeved on the center rod (1) and is loosely fitted with the center rod (1); the pressure plate (5) is located above the sealing ring (4), the pressure plate (5) is fixedly connected to the cylinder head (2) and seals the receiving groove (21); a conical seat (6) is provided on the upper surface of the pressure plate (5), the conical seat (6) is arranged around the center rod (1), the outer peripheral surface of the conical seat (6) is set as a conical surface (61), the conical surface (61) gradually approaches the axis of the center rod (1) in the vertical upward direction, and the conical surface (61) intersects with the inner wall surface of the conical seat (6) to form a circular sharp angle (62).

2. The center rod automatic glue cleaning structure according to claim 1 is characterized in that: The generatrix of the conical surface (61) is set as a straight line, and the angle between the generatrix of the conical surface (61) and the axis of the central rod (1) is set to 20-70°; Alternatively, the generatrix of the conical surface (61) is set as an arc.

3. The center rod automatic glue cleaning structure according to claim 2 is characterized in that: A vertical connecting surface (53) is provided between the lower edge of the conical surface (61) and the upper surface of the pressing plate (5); Alternatively, the lower edge of the conical surface (61) is directly connected to the upper surface of the pressing plate (5); Alternatively, an arc-shaped connecting surface is provided between the lower edge of the conical surface (61) and the upper surface of the pressing plate (5).

4. The center rod automatic glue cleaning structure according to claim 1 is characterized in that: The pressure plate (5) and the cylinder head (2) are fixedly connected via connecting screws (51); a fixing hole (52) is provided on the pressure plate (5), a threaded hole (22) is provided on the cylinder head (2), and the connecting screws (51) pass through the fixing hole (52) and are threadedly connected to the threaded hole (22).

5. The center rod automatic glue cleaning structure according to claim 4 is characterized in that: The cylinder head (2) is provided with an annular cavity (23) at a position corresponding to the pressure plate (5), the pressure plate (5) is placed in the annular cavity (23), and the upper surface of the pressure plate (5) is flush with the upper end surface of the cylinder head (2); and / or, the upper surface of the pressure plate (5) and the upper end surface of the cylinder head (2) are both set as horizontal planes; And / or, the fixing hole (52) is configured as a countersunk hole.

6. The center rod automatic glue cleaning structure according to claim 1 is characterized in that: The conical seat (6) and the pressing plate (5) are provided as an integrally formed structure or a separate structure.

7. The center rod automatic glue cleaning structure according to claim 1 is characterized in that: The conical seat (6) and the central rod (1) are clearance-matched, and the clearance between the inner wall of the conical seat (6) and the central rod (1) is set to 0.08-0.2 mm.

8. The center rod automatic glue cleaning structure according to claim 1 is characterized in that: The lower end of the sealing ring (4) abuts against the guide sleeve (3), and the upper end of the sealing ring (4) abuts against the pressing plate (5).

9. The center rod automatic glue cleaning structure according to claim 8, characterized in that: It also includes a ring seat (7), and the cylinder cover (2) is fixed on the ring seat (7); the ring seat (7) is provided with a lower clamping ring (71) and a lower auxiliary steel ring (72), and the lower clamping ring (71) and the lower auxiliary steel ring (72) can clamp the lower edge of the capsule (8); the center rod (1) is provided with an upper clamping ring (11), and the upper clamping ring (11) is provided with an auxiliary steel ring (12), and the upper clamping ring (11) and the auxiliary steel ring (12) can clamp the upper edge of the capsule (8).

10. The center rod automatic glue cleaning structure according to claim 9, characterized in that: The lowest position of the upper clamping ring (11) when moving with the central rod (1) is higher than the height of the sharp corner (62).

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