A leak-proof material mold for sizing a rubber roll

Abstract

The utility model relates to the technical field of rubber roll mould, disclose a kind of material leakage prevention mould for rubber roll shaping, including sleeve and end cap, sleeve both ends outer ring are all surrounded and are provided with ring plate, end cap is provided with two ring plate installed on sleeve both ends and blocks sleeve both ends, the shaft hole for roll core shaft body to pass through is set in the middle position of end cap surface, the surface of end cap in the position of shaft hole is provided with screw cylinder, the outer ring of screw cylinder is connected with screw cover by screwing, the through hole for roll core shaft body to pass through is set in the surface of screw cover. The utility model technical scheme is provided with screw cylinder on the surface of end cap in sleeve both ends, for making screw cover screw in screw cylinder outer ring and locking, can make the outer ring of roll core shaft body after rubber ring is sleeved and stick in the surface of screw cylinder, when screwing screw cover, rubber ring is extruded deformation and makes it resist in the outer surface of roll core shaft body, realize the good sealing effect of roll core shaft body and end cap penetration gap, avoid polyurethane raw materials from leakage from gap.

Description

Technical Field

[0001] This utility model relates to the field of rubber roller mold technology, specifically a leak-proof mold for shaping rubber rollers. Background Technology

[0002] Rubber rollers are roll-shaped products made of metal or other materials as the core and covered with rubber through vulcanization. They are widely used in papermaking, dyeing, printing, metallurgy and other fields. According to the material, they can be divided into butyl rubber rollers, polyurethane rubber rollers, silicone rubber rollers, etc. Among them, silicone rubber rollers are resistant to high temperature and chemical corrosion and are suitable for plastic processing and packaging machinery. According to the application, they are divided into printing rubber rollers, papermaking rubber rollers, etc. Printing rubber rollers directly affect printing accuracy and color reproduction. Their structure includes an outer rubber layer, a metal core and ventilation holes. The processing requires sandblasting, vulcanization and other processes. Rubber rollers have excellent performance, such as aging resistance, high and low temperature resistance, and insulation properties, and are key components for continuous industrial production.

[0003] Polyurethane rollers consist of a roller core and a rubber coating. After the roller core is processed, a sleeve-type mold needs to be installed on its outer ring, and polyurethane raw material is poured into it. Afterwards, the end caps are sealed and vulcanization molding is performed. Because the polyurethane raw material is fluid and the end caps have perforations for the roller core shaft to pass through, there is a risk of leakage of the polyurethane raw material from the gap between the perforations and the roller core shaft during vulcanization. Therefore, we propose a leakage-proof mold for roller shaping. Utility Model Content

[0004] The purpose of this utility model is to provide a leak-proof mold for shaping rubber rollers. By providing screw cylinders on the surface of the end caps at both ends of the sleeve, the screw caps are screwed onto the outer ring of the screw cylinders for locking. This allows the outer ring of the roller core shaft to be fitted with a rubber ring and then contact the surface of the screw cylinder. When the screw caps are screwed on, the rubber rings are squeezed and deformed, pressing them tightly against the outer surface of the roller core shaft. This achieves a good sealing effect at the gap between the roller core shaft and the end cap, preventing polyurethane material from leaking from the gap and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof mold for shaping rubber rollers, comprising a sleeve and an end cap. Both ends of the sleeve are surrounded by annular plates. The end cap has two annular plates mounted on both ends of the sleeve, sealing both ends. A shaft hole for the roller core shaft to pass through is provided in the middle of the end cap surface. A screw cylinder is provided on the end cap surface at the shaft hole location. A screw cap is connected to the outer ring of the screw cylinder by a screw connection. A through-hole for the roller core shaft to pass through is provided on the surface of the screw cap. A circular rubber ring is provided on the screw cylinder surface inside the screw cap. When the rubber ring is placed on the roller core shaft passing through the shaft hole and through-hole, and the screw cap is tightened, the rubber ring is compressed and deformed, pressing against the inner side of the screw cylinder and screw cap, and the surface of the roller core shaft to achieve a seal.

[0006] By adopting the above technical solution, after the roller core passes through the inside of the sleeve, the polyurethane raw material is poured and the end cap is installed, a rubber sleeve can be placed on the outer ring of the roller core and contact the outer ring of the screw barrel. Then, the screw cap is put on and tightened, which compresses the rubber ring and deforms it. This allows the rubber ring to press against the roller core shaft, the screw cap and the screw barrel surface, achieving a good seal at the gaps and preventing the leakage of polyurethane raw material.

[0007] Optionally, the surface of the screw cap is provided with a hexagonal block that is integrally connected to the screw cap, and a through hole is also provided in the middle of the hexagonal block.

[0008] By adopting the above technical solution, when it is necessary to remove the screw cap, a wrench can be used to easily unscrew it through the hexagonal block.

[0009] Optionally, the inner ring of the screw barrel is provided with a groove, which is conical and placed in the inner ring of the screw barrel, and the rubber ring is placed in the groove.

[0010] By adopting the above technical solution, the conical groove makes the rubber ring more easily deformed when squeezed, thereby sealing it more tightly against the gap.

[0011] Optionally, the two ends of the sleeve protrude from the annular plates located at both ends, and the protruding portions abut against the end cap surface where abutment grooves are provided.

[0012] By adopting the above technical solution, the cover plate can be quickly positioned at both ends of the sleeve.

[0013] Optionally, the end cap is installed on the surface of the annular plates at both ends of the sleeve by means of bolts and nuts, and multiple sets of bolts and nuts are provided.

[0014] Optionally, the outer surfaces of the end cap and the ring plate are uniformly provided with a first mounting hole and a second mounting hole, respectively. The bolt passes through the first mounting hole and the second mounting hole, passes through the end cap and the ring plate, and cooperates with the nut to install the end cap.

[0015] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows: 1. The technical solution of this application provides screws on the end cap surfaces at both ends of the sleeve, which are used to lock the screw caps on the outer ring of the screws. This allows the outer ring of the roller core shaft to be fitted with a rubber ring and then contact the surface of the screws. When the screw caps are screwed on, the rubber rings are squeezed and deformed, causing them to press against the outer surface of the roller core shaft, thus achieving a good sealing effect at the gap between the roller core shaft and the end cap, and preventing polyurethane raw materials from leaking from the gap.

[0016] 2. The technical solution of this application provides a hexagonal block on the surface of the screw cap, which can be easily loosened or tightened by using a wrench with the help of the hexagonal block.

[0017] 3. The technical solution of this application provides a conical groove on the surface of the screw barrel, which is beneficial to the positioning of the rubber sleeve when it abuts against the surface of the screw barrel. When the screw cap squeezes the rubber ring and deforms it, the rubber ring is squeezed by the conical groove, which makes the deformation more obvious and can be pressed against the outer surface of the shaft by a greater force. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the anti-leakage mold for shaping rubber rollers according to this utility model; Figure 2 This is a detailed structural diagram of the upper part of the anti-leakage mold for shaping rubber rollers according to this utility model when installing the roller core.

[0019] In the diagram: 1. Sleeve; 2. End cap; 21. Shaft hole; 22. First mounting hole; 23. Groove; 3. Ring plate; 31. Second mounting hole; 4. Screw barrel; 41. Screw cap; 411. Hexagonal block; 412. Through hole; 42. Rubber ring; 5. Bolt; 51. Nut; 6. Roller core. Detailed Implementation

[0020] Please see Figure 1-2 This utility model provides a technical solution: a leak-proof mold for shaping rubber rollers, including a sleeve 1 and an end cap 2. Both ends of the sleeve 1 are surrounded by annular plates 3. The end cap 2 is provided with two annular plates 3 installed on both ends of the sleeve 1 and sealing both ends of the sleeve 1. The outer surfaces of the end cap 2 and the annular plates 3 are respectively evenly provided with a first mounting hole 22 and a second mounting hole 31. When the end cap 2 is placed on both ends of the sleeve 1, the first mounting hole 22 and the second mounting hole 31 are aligned. Then, the bolts 5 pass through the first mounting hole 22 and the second mounting hole 31, penetrate the end cap 2 and the annular plates 3, and cooperate with the nuts 51 to install the end cap 2. Multiple sets of bolts 5 and nuts 51 are provided. The end cap 2 is also provided with a shaft hole 21 in the middle position of the surface of the end cap 2 for the roller core 6 shaft to pass through.

[0021] When using it, the end cap 2 at the starting end needs to be installed first. Then, the shaft of the roller core 6 is inserted, and polyurethane is poured into the sleeve 1 at the end where the end cap 2 is not installed. Then, the end cap 2 at the other end is installed to seal both ends of the sleeve 1. Then, vulcanization molding can be performed. After molding, the end cap 2 can be removed and the molded rubber roller can be taken out for subsequent processing.

[0022] The shaft of the roller core 6 passes through the shaft hole 21 of the end cover 2, allowing the polyurethane raw material to easily leak out between the shaft of the roller core 6 and the shaft hole 21 before vulcanization molding. Therefore, a screw cylinder 4 is also provided on the surface of the end cover 2 at the shaft hole 21. When the shaft of the roller core 6 passes through the end cover 2, it also passes through the screw cylinder 4. After the end cover 2 is installed, a circular rubber ring 42 needs to be fitted on the outer ring of the shaft of the roller core 6, and the rubber ring 42 needs to be in contact with the surface of the screw cylinder 4. Then, the outer ring of the screw cylinder 4 is connected to the screw cap 41 by screwing, and the shaft of the roller core 6 passes through the through hole 412 opened on the surface of the screw cap 41. The surface of 1 is provided with a hexagonal block 411 that is integrally connected with the screw cap 41. A through hole 412 is also provided in the middle of the hexagonal block 411. The shaft of the roller core 6 will also pass through the hexagonal block 411 through the through hole 412. Then, the screw cap 41 can be tightened by using a wrench through the hexagonal block 411. During the tightening process, the screw cap 41 and the screw barrel 4 squeeze the rubber ring 42 and make its surface press against the inner surface of the screw barrel 4, the screw cap 41 and the shaft surface of the roller core 6, so as to achieve a good seal for the gap at the position where the shaft of the roller core 6 passes through the end cap 2, which can prevent the polyurethane from leaking before it is vulcanized.

[0023] Additionally, a conical groove is provided on the inner ring of the screw barrel 4. The rubber ring 42 is placed in the groove, which facilitates the positioning of the rubber ring 42. Furthermore, during the tightening of the screw cap 41, the rubber ring 42 is more easily squeezed and deformed, so that it presses against the inner surface of the screw barrel 4, the screw cap 41, and the shaft surface of the roller core 6 to achieve a good sealing effect.

[0024] The two ends of the sleeve 1 protrude from the annular plates 3 located at both ends, and the protruding parts abut against the end cap 2 surface which is provided with abutment grooves 23. When installing the end cap 2, the end cap 2 is placed on both ends of the sleeve 1, so that the protruding parts of the sleeve 1 can be placed in the abutment grooves 23, thereby achieving quick positioning of the end cap 2.

[0025] In use, first use a wrench with hexagonal block 411 to unscrew the caps 41 located on the bottom and top end caps 2, and unscrew the bolts 5 and nuts 51 to remove the top end cap 2, allowing the shaft of the roller core 6 to pass through the inside of the sleeve 1 and through the shaft hole 21 of the bottom end cap 2 to the bottom of the sleeve 1. After determining the bottom position of the roller core 6, put a rubber ring 42 on the outer ring of the outer shaft of the roller core 6, and make it abut against the surface of the screw cylinder 4 on the surface of the bottom end cap 2. After the cap 41 is put on the outer ring of the roller core 6 through the through hole 412, it is tightened on the screw cylinder 4 on the surface of the bottom end cap 2. During the tightening process, the cap 41 and the screw cylinder 4 are squeezed, causing the rubber ring 42 to deform and stick tightly against the outer surface of the roller core 6 shaft, thus achieving tight positioning of the bottom shaft of the roller core 6. Then keep the roller core 6 in a suspended state to avoid excessive force on the position of the bottom rubber ring 42, and then on the sleeve Sufficient polyurethane is poured into the interior of sleeve 1. Then, the upper end cap 2 is placed on top of sleeve 1. The shaft of roller core 6 passes through end cap 2 through shaft hole 21 and through hole 412. Bolt 5 is used to pass through the first mounting hole 22 and the second mounting hole 31 of end cap 2 and ring plate 3, and is tightened with nut 51. The part of sleeve 1 protruding above ring plate 3 abuts against the groove 23 of end cap 2, realizing the installation of end cap 2 and ensuring the seal at the connection between end cap 2 and sleeve 1. To improve the sealing effect, a sealing ring can also be placed between end cap 2 and ring plate 3. Then, in the same way, the screw cap 41 on the surface of upper end cap 2 is installed on top of screw cylinder 4. Finally, the rubber ring 42, which is squeezed and deformed, is pressed against the shaft of roller core 6 and between screw cylinder 4 and screw cap 41 to achieve a good sealing effect at the gap. During the subsequent vulcanization process to cure polyurethane, raw material leakage can be avoided. After vulcanization, first remove the screw cap 41 and then remove the end caps 2 at both ends to take out the rubber roller for subsequent processing.

Claims

1. A leak-proof mold for shaping rubber rollers, comprising a sleeve (1) and an end cap (2), characterized in that: Both ends of the sleeve (1) are surrounded by ring plates (3), and the end cap (2) is provided with two ring plates (3) installed on both ends of the sleeve (1) and sealing both ends of the sleeve (1). The end cap (2) has a shaft hole (21) in the middle of its surface for the roller core (6) shaft to pass through. A screw cylinder (4) is provided on the surface of the end cap (2) at the shaft hole (21). The outer ring of the screw cylinder (4) is connected to a screw cap (41) by screwing. The surface of the screw cap (41) has a through hole (412) for the roller core (6) shaft to pass through. A circular rubber ring (42) is provided on the surface of the screw cylinder (4) inside the screw cap (41). When the rubber ring (42) is placed on the roller core (6) shaft that passes through the shaft hole (21) and the through hole (412) and the screw cap (41) is tightened, the rubber ring (42) is squeezed and deformed and pressed against the inside of the screw cylinder (4), the screw cap (41) and the surface of the roller core (6) shaft to achieve a seal.

2. The anti-leakage mold for shaping rubber rollers according to claim 1, characterized in that: The surface of the screw cap (41) is provided with a hexagonal block (411) that is integrally connected with the screw cap (41), and a through hole (412) is also provided in the middle of the hexagonal block (411).

3. The anti-leakage mold for shaping rubber rollers according to claim 1, characterized in that: The inner ring of the screw barrel (4) is provided with a groove, which is conical and placed in the inner ring of the screw barrel (4), and the rubber ring (42) is placed in the groove.

4. The anti-leakage mold for shaping rubber rollers according to claim 1, characterized in that: The two ends of the sleeve (1) protrude from the annular plates (3) located at both ends, and the protruding parts abut against the end cap (2) surface where abutment grooves (23) are provided.

5. The anti-leakage mold for shaping rubber rollers according to claim 1, characterized in that: The end cap (2) is installed on the surface of the annular plates (3) at both ends of the sleeve (1) by means of bolts (5) and nuts (51), and multiple sets of bolts (5) and nuts (51) are provided.

6. The anti-leakage mold for shaping rubber rollers according to claim 5, characterized in that: The outer ring surfaces of the end cap (2) and the ring plate (3) are respectively provided with a first mounting hole (22) and a second mounting hole (31). The bolt (5) passes through the first mounting hole (22) and the second mounting hole (31) through the end cap (2) and the ring plate (3) and cooperates with the nut (51) to install the end cap (2).

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