Glue sealing structure of rubber Mooney viscosity testing machine

Abstract

A glue sealing structure of a rubber Mooney viscosity testing machine comprises a base, a rotor transmission shaft is arranged below the base, a rotor transmission connecting shaft is arranged at the end, close to the base, of the rotor transmission shaft, and a rotor is arranged at the end, away from the rotor transmission shaft, of the rotor transmission connecting shaft; a heat insulation seat is arranged on the base, an electric heating sheet is arranged on the heat insulation seat, a heating disc is arranged on the electric heating sheet, and a material receiving disc is arranged on the heating disc; a heat insulation plate is arranged on the heating disc, a containing opening is formed in the middle of the heat insulation plate, and a lower die base is arranged in the containing opening of the heat insulation plate and embedded in the containing opening. A ring seat protruding upwards is arranged on a bottom plate of the material receiving disc, a third arc-shaped groove is formed in the inner side wall of the ring seat, a first sealing ring is correspondingly arranged in the third arc-shaped groove in a matched mode, and the first sealing ring is clamped in the third arc-shaped groove. A first O-shaped ring is arranged on the inner side of the first sealing ring, and a first arc-shaped groove is formed in the outer ring of the first O-shaped ring. The glue sealing device is provided with an independent glue sealing structure, glue leakage is prevented, and equipment reliability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection equipment and mainly relates to a sealing structure on a rubber Mooney viscosity testing device. Background Art

[0002] The rubber Mooney viscosity tester is used to measure the viscosity and scorch of raw rubber or mixed rubber. Mooney viscosity reflects the rubber's processing properties, molecular weight, and distribution range. High Mooney viscosity indicates that the rubber is difficult to mix evenly and difficult to extrude; it has a high molecular weight and a wide distribution range. Low Mooney viscosity indicates that the rubber is prone to sticking to the roller; it has a low molecular weight and a narrow distribution range. Excessively low Mooney viscosity results in low tensile strength of the vulcanized product. The Mooney viscosity-time curve also reflects the vulcanization process performance of the rubber.

[0003] The Rubber Mooney Viscosity Tester measures the flow properties of rubber. During the test, a rubber sample is placed on a rotor, held within the upper and lower mold cavities. As the rotor rotates, it exerts a torque on the material in the cavity, pushing the rubber layer closest to the rotor to flow. This forces the remaining rubber in the cavity to react, which is measured using a torque sensor mounted on the motor mount below the cavity to obtain the rubber flow parameters. During the test, the rubber will flow, and existing equipment lacks a dedicated sealing structure, which can easily cause leakage. This leads to instability and reliability issues, affecting the precision and accuracy of the test, and this needs improvement. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a sealing structure for a rubber Mooney viscosity testing machine to prevent glue leakage, enhance the stability and reliability of the equipment, and improve the precision and accuracy of the test.

[0005] In order to solve the existing technical problems, the present invention adopts the following technical solutions:

[0006] A sealing structure for a rubber Mooney viscosity tester includes a base, a rotor transmission shaft is provided below the base, a rotor transmission connecting shaft is provided at one end of the rotor transmission shaft close to the base, and a rotor is provided at one end of the rotor transmission connecting shaft away from the rotor transmission shaft;

[0007] A heat insulation seat is provided on the base, an electric heating plate is provided on the heat insulation seat, a heating plate is provided on the electric heating plate, and a receiving plate is provided on the heating plate; a heat insulation board is provided on the heating plate, a placement opening is provided in the middle of the heat insulation board, a lower mold seat is provided in the placement opening of the heat insulation board, and the lower mold seat is embedded in the placement opening;

[0008] A ring seat protruding upward is provided on the bottom plate of the receiving tray, a third arc-shaped groove is provided on the inner side wall of the ring seat, a first sealing ring is provided in the third arc-shaped groove, and the first sealing ring is clamped in the third arc-shaped groove;

[0009] A first O-ring is provided on the inner side of the first sealing ring, a first arc-shaped groove is provided on the outer ring of the first O-ring, the first sealing ring is sleeved in the first arc-shaped groove of the first O-ring, the first sealing ring is clamped between the first arc-shaped groove and the third arc-shaped groove, and the first O-ring is sleeved on the rotor.

[0010] Furthermore, in some embodiments, a through axial hole is formed in the middle of the lower mold base, a fourth arc-shaped groove is formed on the side wall of the axial hole, a matching second sealing ring is provided in the fourth arc-shaped groove, and the second sealing ring is clamped in the fourth arc-shaped groove;

[0011] A second O-ring is provided on the inner side of the second sealing ring, a second arc-shaped groove is provided on the outer ring of the second O-ring, the second sealing ring is sleeved in the second arc-shaped groove of the second O-ring, the second sealing ring is clamped between the second arc-shaped groove and the fourth arc-shaped groove, and the second O-ring is sleeved on the rotor.

[0012] Furthermore, in some embodiments, the rotor transmission shaft is drivingly connected to the rotor transmission coupling shaft, and the rotor transmission coupling shaft is transmission-connected to the rotor; one end of the rotor away from the rotor transmission shaft passes through the base and extends upward above the base.

[0013] Furthermore, in some embodiments, the electric heating plate is sandwiched between the heating plate and the thermal insulation seat, and a tray placement groove for accommodating the receiving tray is provided on a side of the heating plate away from the thermal insulation seat, and the bottom of the receiving tray is embedded in the tray placement groove.

[0014] Furthermore, in some embodiments, the diameter of the placement opening of the heat insulation plate is smaller than the outer diameter of the heating plate, and the bottom surface of the heat insulation plate is disposed adjacent to the upper surface of the heating plate;

[0015] A lower mold cover is arranged on the heat insulation board, the bottom end of the lower mold cover is arranged on the base, and the lower mold cover covers the base.

[0016] Furthermore, in some embodiments, the outer diameter of the lower mold base is larger than the diameter of the material tray placement groove of the heating plate, the outer diameter of the lower mold base is larger than the diameter of the receiving plate, and the bottom surface of the lower mold base is arranged adjacent to the upper surface of the heating plate; a concave cavity corresponding to the receiving plate is provided on the side of the lower mold base close to the heating plate, and the top of the receiving plate is embedded in the concave cavity of the lower mold base.

[0017] Furthermore, in some embodiments, a side of the lower mold base away from the heating plate is provided with an upwardly protruding lower mold cavity; the rotor extends upward from the bottom of the base, and the top end of the rotor passes through the lower mold base and extends above the lower mold cavity.

[0018] Furthermore, in some embodiments, a temperature sensing rod is provided on the outside of the rotor, a guide groove corresponding to the temperature sensing rod is opened on the heat insulation plate, the temperature sensing rod is clamped in the guide groove, and the outer end of the temperature sensing rod is arranged on the outside of the heat insulation plate; a lower mold base adapter plate is provided on the outer side wall of the heat insulation seat, and the temperature sensing rod is passed through the through hole of the lower mold base adapter plate.

[0019] The utility model is provided with an independent sealing structure to prevent glue leakage, and the equipment has high reliability. In the process of testing the flow performance of rubber, waste materials are prevented from invading and penetrating into the machine body, thereby further improving data sensitivity and reproducibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance of an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the assembly of an embodiment of the utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the lower die base portion of an embodiment of the present utility model;

[0024] Figure 5 This is a structural diagram of the receiving tray portion of an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the assembly of the rotor part of the embodiment of the utility model;

[0026] Figure 7 It is an exploded schematic diagram of an embodiment of the present utility model.

[0027] Markings in the figure:

[0028] Temperature sensing rod 11, concave cavity 12, rotor 13, receiving tray 14, rotor transmission connecting shaft 15, rotor transmission shaft 16, placement port 17, base 18, ring seat 19, lower mold cavity 21, electric heating plate 22, heating plate 23, lower mold cover 24, thermal insulation seat 25, thermal insulation plate 26, lower mold base adapter plate 27, lower mold base 28, shaft hole 29, first O-ring 31, first sealing ring 32, second O-ring 33, second sealing ring 34, material tray placement groove 35, first arc-shaped groove 36, second arc-shaped groove 37, third arc-shaped groove 38, fourth arc-shaped groove 39, guide groove 42. DETAILED DESCRIPTION

[0029] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the embodiments of this application and the features therein may be combined with each other unless they conflict. To further understand the features, technical means, and specific objectives and functions achieved by the present invention, and to analyze the advantages and spirit of the present invention, a further understanding of the present invention is obtained through the following detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be a central component. The terms "vertical," "horizontal," "front," "rear," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0031] In order to further illustrate the features and technical means of the present application, please refer to the accompanying drawings, which show the specific structure of the present application. The present application includes a base 18, a rotor transmission shaft 16 is provided below the base 18, and a rotor transmission connecting shaft 15 is provided at one end (top) of the rotor transmission shaft 16 close to the base 18, and the rotor transmission connecting shaft 15 is driven and connected to the rotor transmission connecting shaft 15; the end of the rotor transmission connecting shaft 15 away from the rotor transmission shaft 16 is provided with a rotor 13, and the rotor transmission connecting shaft 15 is transmission-connected to the rotor 13; the end (top) of the rotor 13 away from the rotor transmission shaft 16 passes through the base 18 and extends upward above the base 18.

[0032] Furthermore, in some embodiments, a heat-insulating seat 25 is provided on the base 18, a heating plate 22 is provided on the heat-insulating seat 25, a heating plate 23 is provided on the heating plate 22, and the heating plate 22 is sandwiched between the heating plate 23 and the heat-insulating seat 25. A receiving tray 14 is provided on the heating plate 23, and a tray placement slot 35 for accommodating the receiving tray 14 is provided on a side of the heating plate 23 away from the heat-insulating seat 25, and the bottom of the receiving tray 14 is embedded in the tray placement slot 35.

[0033] A heat shield 26 is provided on the top of the heating plate 23. A placement opening 17 is defined in the middle of the heat shield 26. A lower die holder 28 is disposed within the placement opening 17 of the heat shield 26. The lower die holder 28 is embedded within the placement opening 17. The diameter of the placement opening 17 of the heat shield 26 is smaller than the outer diameter of the heating plate 23. The bottom surface of the heat shield 26 is positioned adjacent to the top surface of the heating plate 23.

[0034] Furthermore, in some embodiments, the outer diameter of the lower mold base 28 is larger than the diameter of the material tray placement groove 35 of the heating plate 23. Further, the outer diameter of the lower mold base 28 is larger than the diameter of the receiving plate 14, and the bottom surface of the lower mold base 28 is arranged adjacent to the upper surface of the heating plate 23; the lower mold base 28 is provided with a concave cavity 12 corresponding to the receiving plate 14 on one side close to the heating plate 23, and the top of the receiving plate 14 is embedded in the concave cavity 12 of the lower mold base 28.

[0035] The lower die base 28 has a side (upper surface) away from the heating plate 23 with an upwardly protruding lower die cavity 21 ; the rotor 13 extends upward from the bottom of the base 18 , and the top end of the rotor 13 passes through the lower die base 28 and extends above the lower die cavity 21 .

[0036] Furthermore, in some embodiments, a temperature sensing rod 11 is provided on the outside of the rotor 13, and a guide groove 42 corresponding to the temperature sensing rod 11 is opened on the heat insulation plate 26. The temperature sensing rod 11 is clamped in the guide groove 42, and the outer end of the temperature sensing rod 11 is arranged on the outside of the heat insulation plate 26; a lower mold base adapter plate 27 is provided on the outer wall of the heat insulation seat 25, and the temperature sensing rod 11 is passed through the through hole of the lower mold base adapter plate 27, and the through hole of the lower mold base adapter plate 27 fixes the temperature sensing rod 11 on the heat insulation plate 26.

[0037] Furthermore, in some embodiments, an upwardly protruding ring seat 19 is provided on the bottom plate of the receiving tray 14, and a third arc-shaped groove 38 is provided on the inner side wall (inner hole) of the ring seat 19, and a matching first sealing ring 32 is provided in the third arc-shaped groove 38, and the first sealing ring 32 is clamped in the third arc-shaped groove 38; a first O-ring 31 is provided on the inner side of the first sealing ring 32, and a first arc-shaped groove 36 is provided on the outer ring of the first O-ring 31, and the first sealing ring 32 is sleeved in the first arc-shaped groove 36 of the first O-ring 31, and the first sealing ring 32 is clamped between the first arc-shaped groove 36 and the third arc-shaped groove 38, and the first O-ring 31 is sleeved on the rotor 13.

[0038] A through axial hole 29 is provided in the middle of the lower die base 28, and a fourth arc-shaped groove 39 is provided on the side wall of the axial hole 29. A matching second sealing ring 34 is provided in the fourth arc-shaped groove 39, and the second sealing ring 34 is clamped in the fourth arc-shaped groove 39; a second O-ring 33 is provided on the inner side of the second sealing ring 34, and a second arc-shaped groove 37 is provided on the outer ring of the second O-ring 33. The second sealing ring 34 is sleeved in the second arc-shaped groove 37 of the second O-ring 33, and the second sealing ring 34 is clamped between the second arc-shaped groove 37 and the fourth arc-shaped groove 39. The second O-ring 33 is sleeved on the rotor 13.

[0039] Furthermore, in some embodiments, a lower mold cover 24 is provided on the heat insulation board 26 , and the bottom end of the lower mold cover 24 is provided on the base 18 , that is, the lower mold cover 24 covers the base 18 , and further, the lower mold cover 24 covers other components on the base 18 .

[0040] The above embodiments only express several preferred implementation methods of the present invention, and the description thereof is relatively specific and detailed. It should be understood that the present invention is not limited to the forms disclosed herein and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge in the relevant fields, and cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention. The changes and modifications made by those in this field do not depart from the spirit and scope of the present invention, and all of these belong to the scope of protection of the claims attached to the present invention. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A sealing structure for a rubber Mooney viscosity testing machine, comprising: A base (18), wherein a rotor transmission shaft (16) is provided below the base (18), a rotor transmission connecting shaft (15) is provided at one end of the rotor transmission shaft (16) close to the base (18), and a rotor (13) is provided at one end of the rotor transmission connecting shaft (15) away from the rotor transmission shaft (16); The invention is characterized in that a heat-insulating seat (25) is provided on the base (18), an electric heating plate (22) is provided on the heat-insulating seat (25), a heating plate (23) is provided on the electric heating plate (22), and a material receiving plate (14) is provided on the heating plate (23); a heat-insulating plate (26) is provided on the heating plate (23), a placement opening (17) is provided in the middle of the heat-insulating plate (26), a lower mold seat (28) is provided in the placement opening (17) of the heat-insulating plate (26), and the lower mold seat (28) is embedded in the placement opening (17); An upwardly protruding ring seat (19) is provided on the bottom plate of the receiving tray (14), a third arc-shaped groove (38) is provided on the inner side wall of the ring seat (19), a first sealing ring (32) is provided in the third arc-shaped groove (38), and the first sealing ring (32) is clamped in the third arc-shaped groove (38); A first O-ring (31) is provided on the inner side of the first sealing ring (32), a first arc-shaped groove (36) is provided on the outer ring of the first O-ring (31), the first sealing ring (32) is sleeved in the first arc-shaped groove (36) of the first O-ring (31), the first sealing ring (32) is clamped between the first arc-shaped groove (36) and the third arc-shaped groove (38), and the first O-ring (31) is sleeved on the rotor (13).

2. The sealing structure of a rubber Mooney viscosity tester according to claim 1, characterized in that: A through shaft hole (29) is provided in the middle of the lower die base (28), a fourth arc-shaped groove (39) is provided on the side wall of the shaft hole (29), a matching second sealing ring (34) is provided in the fourth arc-shaped groove (39), and the second sealing ring (34) is clamped in the fourth arc-shaped groove (39); A second O-ring (33) is provided on the inner side of the second sealing ring (34), a second arc-shaped groove (37) is provided on the outer ring of the second O-ring (33), the second sealing ring (34) is sleeved in the second arc-shaped groove (37) of the second O-ring (33), the second sealing ring (34) is clamped between the second arc-shaped groove (37) and the fourth arc-shaped groove (39), and the second O-ring (33) is sleeved on the rotor (13).

3. The sealing structure of a rubber Mooney viscosity tester according to claim 1, characterized in that: The rotor transmission shaft (16) is driven and connected to the rotor transmission connecting shaft (15), and the rotor transmission connecting shaft (15) is transmission-connected to the rotor (13); one end of the rotor (13) away from the rotor transmission shaft (16) passes through the base (18) and then extends upward above the base (18).

4. The sealing structure of a rubber Mooney viscosity tester according to claim 1, characterized in that: The electric heating plate (22) is sandwiched between the heating plate (23) and the heat insulation seat (25); a material tray placement groove (35) for accommodating the material receiving plate (14) is provided on a side of the heating plate (23) away from the heat insulation seat (25); and the bottom of the material receiving plate (14) is embedded in the material tray placement groove (35).

5. The sealing structure of a rubber Mooney viscosity tester according to claim 1, characterized in that: The placement opening (17) of the heat insulation plate (26) has a diameter smaller than the outer diameter of the heating plate (23), and the bottom surface of the heat insulation plate (26) is arranged adjacent to the upper surface of the heating plate (23); A lower mold cover (24) is provided on the heat insulation board (26), the bottom end of the lower mold cover (24) is arranged on the base (18), and the lower mold cover (24) covers the base (18).

6. The sealing structure of a rubber Mooney viscosity tester according to claim 1, characterized in that: The outer diameter of the lower die base (28) is larger than the diameter of the material tray placement groove (35) of the heating plate (23), and the outer diameter of the lower die base (28) is larger than the diameter of the material receiving plate (14). The bottom surface of the lower die base (28) is arranged adjacent to the upper surface of the heating plate (23); a concave cavity (12) matching the material receiving plate (14) is provided on a side of the lower die base (28) close to the heating plate (23), and the top of the material receiving plate (14) is embedded in the concave cavity (12) of the lower die base (28).

7. The sealing structure of a rubber Mooney viscosity tester according to claim 1, characterized in that: A lower die cavity (21) protruding upward is provided on a side of the lower die base (28) away from the heating plate (23); the rotor (13) extends upward from the bottom of the base (18), and the top end of the rotor (13) passes through the lower die base (28) and extends above the lower die cavity (21).

8. The sealing structure of a rubber Mooney viscosity tester according to claim 1, characterized in that: A temperature sensing rod (11) is provided on the outer side of the rotor (13); a guide groove (42) matching the temperature sensing rod (11) is provided on the heat insulation plate (26); the temperature sensing rod (11) is clamped in the guide groove (42); the outer end of the temperature sensing rod (11) is arranged on the outer side of the heat insulation plate (26); a lower mold base adapter plate (27) is provided on the outer side wall of the heat insulation seat (25); the temperature sensing rod (11) is passed through the through hole of the lower mold base adapter plate (27).

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