Hydraulic top bolt precision powder spraying device of rubber mixing mill

Abstract

The utility model belongs to the technical field of mixing rubber internal mixer, and disclose mixing rubber internal mixer's hydraulic upper jackscrew precision powder spraying device, including the hydraulic cylinder of installing on the internal mixer frame, the piston rod of hydraulic cylinder is connected with the connecting frame, the bottom fixed connection of connecting frame has the upper jackscrew body, installs the movable sealing assembly on the upper jackscrew body, movable sealing assembly is connected with powder spraying subassembly and rotary drive subassembly respectively, when spraying, miniature electric telescopic link drive lift round plate drives vertical rod to drop, makes powder material spray head to stretch out, when not spraying, sealing round plate and sealing groove are pasted, will spray head be stored in mounting groove, avoid mechanical interference and prevent powder leakage, guarantee pressure distribution, the gear meshing gear ring of the small -size motor of rotary drive subassembly drives, drives vertical rod and spray head to rotate, dynamic angle, accurate coverage rubber area, adapt to rubber form change, improve dispersion uniformity, reduce mixing time, improve efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of internal mixing mills for rubber compounding, specifically a hydraulic top bolt precision powder spraying device for internal mixing mills for rubber compounding. Background Technology

[0002] In the production process of rubber products, the quality of the compound is the core factor that determines the performance of the final product. As a key piece of equipment for compound preparation, the operating efficiency and process precision of the internal mixer directly affect production efficiency. During the mixing process in the internal mixer, powdered additives such as carbon black, sulfur, and accelerators need to be added to the rubber compound with precision. The uniformity of dispersion of these powders, the timing of addition, and the dosage control have a decisive impact on the physical and mechanical properties of the compound (such as tensile strength, abrasion resistance, and hardness).

[0003] In existing technologies, traditional nozzles mostly spray from a fixed position, making it impossible to dynamically adjust the spray angle and coverage based on the morphology of the rubber compound in the mixing chamber (such as the distribution and stacking height of the rubber compound during the turning stage). This results in localized agglomeration or uneven dispersion of powder, requiring extended mixing time to compensate for mixing defects and reducing production efficiency. Furthermore, if a design is adopted to install the powder nozzle directly on the bottom surface of the top bolt body, it will cause significant operational interference. The nozzle protruding from the bottom surface will create mechanical interference with the rubber compound in the mixing chamber. On the one hand, the violent movement of the rubber compound under the stirring action of the rotor may impact the nozzle, causing the nozzle to shift or be damaged, further reducing the powder spraying accuracy. On the other hand, the protruding nozzle will disrupt the adhesion pressure distribution between the bottom surface of the top bolt and the rubber compound, affecting the compaction effect of the rubber compound, interfering with the pressure field balance of the mixing chamber, and indirectly affecting the penetration and mixing quality of the powder.

[0004] Therefore, a hydraulic top bolt precision powder spraying device for compounding internal mixers is proposed to address the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background art, this utility model provides a hydraulic top bolt precision powder spraying device for a rubber mixing mill, which has the advantages of precisely adjusting the powder spraying angle and range, avoiding mechanical interference of the rubber material on the nozzle, and ensuring the sealing performance of the installation part.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic top bolt precision powder spraying device for a rubber mixing internal mixer, comprising a hydraulic cylinder installed on the frame of the internal mixer, the piston rod of the hydraulic cylinder being connected to a connecting frame, the bottom of the connecting frame being fixedly connected to a top bolt body, a movable sealing assembly being installed on the top bolt body, and the movable sealing assembly being connected to a powder spraying assembly and a rotary drive assembly respectively.

[0007] Preferably, the movable sealing assembly includes an installation groove located in the middle of the upper bolt body, a lifting circular plate is provided in the installation groove, a vertical rod passes through the middle of the lifting circular plate, the vertical rod is connected to the lifting circular plate through a bearing, a sealing circular plate is fixedly connected to the bottom end of the vertical rod, and a miniature electric telescopic rod is connected to the top edge of the sealing circular plate, the miniature electric telescopic rod is installed on the inner wall of the installation groove.

[0008] Preferably, the powder spraying assembly includes a powder nozzle installed on the outer wall of the vertical rod. The powder nozzle sprays downward at an angle. The powder nozzle is connected to a guide pipe, which is embedded in the vertical rod. The top end of the guide pipe passes through the vertical rod and is connected to a rotary joint. The rotary joint is connected to a conveying pipe, which passes through the upper top bolt body and is connected to an external conveying system.

[0009] Preferably, the bottom of the mounting groove is provided with a sealing groove that matches the sealing disc, and the inner wall of the sealing groove is tightly fitted to the sealing disc.

[0010] Preferably, the rotary drive assembly includes a gear ring fixed to the outside of the vertical rod, the gear ring being positioned above the lifting circular plate, the gear ring being meshed with a gear, and the gear being connected to a small motor via a motor shaft.

[0011] Preferably, a bracket is fixedly connected to the lifting plate at the position corresponding to the small motor, and the small motor is mounted on the bracket.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The movable sealing assembly of this utility model effectively solves the problem of interference in the working conditions of directly installing the nozzle through the coordinated design of the mounting groove, the lifting circular plate and the sealing circular plate. When spraying powder, the mini electric telescopic rod drives the lifting circular plate to lower the vertical rod, so that the powder nozzle extends out of the bottom surface of the upper top bolt body. When not spraying powder, the sealing circular plate fits tightly with the sealing groove, storing the nozzle in the mounting groove, avoiding mechanical interference between the nozzle protruding from the bottom surface and the adhesive. At the same time, the dynamic sealing structure prevents the powder from leaking from the gap of the mounting groove, ensuring the bonding pressure distribution between the bottom surface of the upper top bolt and the adhesive.

[0014] 2. The rotary drive assembly of this utility model uses a small motor to drive a gear meshing gear ring, which drives the vertical rod and powder nozzle to rotate synchronously. This allows the nozzle to dynamically adjust the spray angle during the powder spraying process, achieving precise coverage of different distribution areas of the rubber compound in the mixing chamber. This effectively avoids local powder aggregation. The combination of the rotation adjustment function and the structural design of the powder spraying assembly can adapt to the morphological changes of the rubber compound during the mixing stage in real time, significantly improving the uniformity of powder dispersion, reducing the extension of mixing time caused by mixing defects, and thus improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the separation structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the top bolt body of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the upper bolt body of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the movable sealing assembly and the rotary drive assembly of this utility model;

[0020] Figure 6 This is a schematic diagram of the powder spraying assembly of this utility model.

[0021] In the diagram: 1. Hydraulic cylinder; 2. Connecting frame; 3. Upper jack body;

[0022] 4. Movable sealing assembly; 41. Mounting groove; 42. Lifting disc; 43. Vertical rod; 44. Sealing disc; 45. Miniature electric telescopic rod; 46. Sealing groove;

[0023] 5. Powder spraying assembly; 51. Powder nozzle; 52. Feed guide pipe; 53. Rotary joint; 54. Conveying pipe;

[0024] 6. Rotary drive assembly; 61. Gear ring; 62. Gear; 63. Small motor; 64. Bracket. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 6 As shown, this utility model provides a hydraulic top bolt precision powder spraying device for a compound internal mixer, including a hydraulic cylinder 1 installed on the frame of the internal mixer, a connecting frame 2 connected to the piston rod of the hydraulic cylinder 1, a top bolt body 3 fixedly connected to the bottom of the connecting frame 2, a movable sealing assembly 4 installed on the top bolt body 3, and a powder spraying assembly 5 and a rotary drive assembly 6 respectively connected to the movable sealing assembly 4.

[0027] Specifically, the movable sealing assembly 4 includes an installation groove 41 located in the middle of the upper top bolt body 3. A lifting circular plate 42 is provided in the installation groove 41. A vertical rod 43 passes through the middle of the lifting circular plate 42. The vertical rod 43 is connected to the lifting circular plate 42 through a bearing. A sealing circular plate 44 is fixedly connected to the bottom end of the vertical rod 43. A miniature electric telescopic rod 45 is connected to the top edge of the sealing circular plate 44. The miniature electric telescopic rod 45 is installed on the inner wall of the installation groove 41.

[0028] The movable sealing assembly 4, through the coordinated design of the mounting groove 41, the lifting disc 42, and the sealing disc 44, effectively solves the problem of interference in the working conditions of directly installing the nozzle. When spraying powder, the miniature electric telescopic rod 45 drives the lifting disc 42 to lower the vertical rod 43, so that the powder nozzle 51 extends out of the bottom surface of the upper plug body 3. When not spraying powder, the sealing disc 44 and the sealing groove 46 fit tightly together, storing the nozzle in the mounting groove 41, avoiding mechanical interference between the nozzle protruding from the bottom surface and the adhesive. At the same time, the dynamic sealing structure prevents the powder from leaking from the gap in the mounting groove 41, ensuring the bonding pressure distribution between the bottom surface of the upper plug and the adhesive.

[0029] Furthermore, the powder spraying assembly 5 includes a powder nozzle 51 installed on the outer wall of the vertical rod 43. The powder nozzle 51 sprays downwards. The powder nozzle 51 is connected to a guide pipe 52, which is embedded in the vertical rod 43. The top end of the guide pipe 52 passes through the vertical rod 43 and is connected to a rotary joint 53. The rotary joint 53 is connected to a conveying pipe 54, which passes through the upper top bolt body 3 and is connected to an external conveying system.

[0030] Furthermore, a sealing groove 46 matching the sealing disc 44 is provided at the bottom of the mounting groove 41, and the inner wall of the sealing groove 46 is tightly fitted to the sealing disc 44.

[0031] It is worth noting that the rotary drive assembly 6 includes a gear ring 61 fixed on the outside of the vertical rod 43. The gear ring 61 is located above the lifting circular plate 42. The gear ring 61 is meshed with a gear 62. The gear 62 is connected to a small motor 63 through a motor shaft.

[0032] The rotary drive assembly 6 drives the gear 62 to mesh with the gear ring 61 via a small motor 63, which drives the vertical rod 43 and the powder nozzle 51 to rotate synchronously. This allows the nozzle to dynamically adjust the spray angle during the powder spraying process, achieving precise coverage of different distribution areas of the rubber compound in the mixing chamber. This effectively avoids local powder aggregation. The combination of the rotary adjustment function and the structural design of the powder spraying assembly 5 enables it to adapt to the morphological changes of the rubber compound during the refining stage in real time, significantly improving the uniformity of powder dispersion, reducing the extension of mixing time caused by mixing defects, and thus improving production efficiency.

[0033] It is worth noting that a bracket 64 is fixedly connected to the lifting plate 42 at the position corresponding to the small motor 63, and the small motor 63 is mounted on the bracket 64.

[0034] Hydraulic cylinder 1, miniature electric telescopic rod 45, and small motor 63 are existing technologies and will not be described in detail. In addition, this utility model also includes power supply, controller and switch, etc., which are not the main technical points of this patent and will not be described in detail.

[0035] Working principle and process: The piston rod of hydraulic cylinder 1 drives the connecting frame 2 and the upper top bolt body 3 to rise and fall to the mixing station. Before powder spraying, the miniature electric telescopic rod 45 of the movable sealing component 4 extends, pushing the lifting circular plate 42, the vertical rod 43 and the sealing circular plate 44 to fall, so that the sealing circular plate 44 is separated from the sealing groove 46 at the bottom of the installation groove 41. Then, the external material conveying system of the powder spraying component 5 supplies material to the powder nozzle 51 through the material conveying pipe 54, the rotary joint 53 and the guide pipe 52. At the same time, the small motor 63 of the rotary drive component 6 is fixed on the lifting circular plate 42 by the bracket 64. Its motor shaft drives the gear 62 to rotate. The gear 62 meshes with the gear ring 61 to drive the vertical rod 43 to rotate, so that the powder nozzle 51 sprays powder downward at multiple angles. After the powder spraying is completed, the miniature electric telescopic rod 45 retracts, driving the sealing circular plate 44 to reset and tightly fit the sealing groove 46, realizing the sealing of the installation groove 41. The upper top bolt body 3 completes the subsequent mixing and pressurizing action under the drive of hydraulic cylinder 1.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic top bolt precision powder spraying device for a rubber compound internal mixer, comprising a hydraulic cylinder (1) mounted on the frame of the internal mixer, characterized in that: The piston rod of the hydraulic cylinder (1) is connected to a connecting frame (2), and the bottom of the connecting frame (2) is fixedly connected to an upper top bolt body (3). A movable sealing assembly (4) is installed on the upper top bolt body (3), and the movable sealing assembly (4) is connected to a powder spraying assembly (5) and a rotary drive assembly (6) respectively.

2. The hydraulic top bolt precision powder spraying device for the internal mixer of compound rubber according to claim 1, characterized in that: The movable sealing assembly (4) includes an installation groove (41) located in the middle of the upper bolt body (3). A lifting disc (42) is provided in the installation groove (41). A vertical rod (43) passes through the middle of the lifting disc (42). The vertical rod (43) is connected to the lifting disc (42) through a bearing. A sealing disc (44) is fixedly connected to the bottom end of the vertical rod (43). A miniature electric telescopic rod (45) is connected to the top edge of the sealing disc (44). The miniature electric telescopic rod (45) is installed on the inner wall of the installation groove (41).

3. The hydraulic top bolt precision powder spraying device for the internal mixer of compound rubber according to claim 2, characterized in that: The powder spraying assembly (5) includes a powder nozzle (51) installed on the outer wall of the vertical rod (43). The powder nozzle (51) sprays downwards. The powder nozzle (51) is connected to a guide pipe (52). The guide pipe (52) is embedded in the vertical rod (43). The top end of the guide pipe (52) passes through the vertical rod (43) and is connected to a rotary joint (53). The rotary joint (53) is connected to a conveying pipe (54). The conveying pipe (54) passes through the upper bolt body (3) and is connected to an external conveying system.

4. The hydraulic top bolt precision powder spraying device for the internal mixer of compound rubber according to claim 2, characterized in that: The bottom of the mounting groove (41) is provided with a sealing groove (46) that matches the sealing disc (44), and the inner wall of the sealing groove (46) is tightly fitted to the sealing disc (44).

5. The hydraulic top bolt precision powder spraying device for the internal mixer of compound rubber according to claim 2, characterized in that: The rotary drive assembly (6) includes a gear ring (61) fixed on the outside of the vertical rod (43). The gear ring (61) is located above the lifting circular plate (42). The gear ring (61) is meshed with a gear (62). The gear (62) is connected to a small motor (63) through a motor shaft.

6. The hydraulic top bolt precision powder spraying device for the internal mixer of compound rubber according to claim 5, characterized in that: A bracket (64) is fixedly connected to the lifting disc (42) at the position corresponding to the small motor (63), and the small motor (63) is mounted on the bracket (64).

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