Glue supply weight regulation and control system of hot feed extruder

Abstract

The utility model discloses a hot feed extruder glue supply weight regulation and control system, which relates to the technical field of tire production and comprises a bottom plate, a first open mill is arranged on one side of the upper end face of the bottom plate, a first conveyor is arranged on the upper end face of the bottom plate close to the first open mill, and the feed end of the first conveyor is arranged at the lower end of the first open mill. A first conveyor is arranged on the upper end face of the bottom plate, a second open mill is further arranged on the upper end face of the bottom plate and arranged below the discharging end of the first conveyor, a second conveyor is arranged at the position, close to the second open mill, of the upper end face of the bottom plate, the feeding end of the second conveyor is arranged below the second open mill, and an extruder is arranged below the discharging end of the second conveyor. According to the utility model, the weight control process of the supplied rubber sheet of the open mill is realized, the weight control is accurate, the weight adjusting speed is high, the stability of the extrusion size of an extrudate is improved, and the product stability is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire production, in particular to a system for regulating the feeding weight of a hot-feed extruder. Background Art

[0002] A tire is a circular elastic rubber product that is mounted on various vehicles or machinery and rolls on the ground. It is usually installed on a metal rim, can support the vehicle body, buffer external impacts, achieve contact with the road surface, and ensure the driving performance of the vehicle. Tires are often used under complex and harsh conditions. When driving, they are subjected to various deformations, loads, forces, and high and low temperatures. Therefore, they must have high load-bearing performance, traction performance, and buffering performance. At the same time, they are also required to have high wear resistance and flex fatigue resistance, as well as low rolling resistance and heat generation.

[0003] In the production of tires, an extruder is needed for extrusion. However, the rubber strip fed into the hot-feed extruder needs to be pre-heated by a rubber mill first. At present, the rubber mill cannot regulate the weight of the fed rubber strip, resulting in weight fluctuations in the fed rubber strip for the extruder. Moreover, the size of the extrudate is easily affected by the change in the weight of the fed rubber strip and fluctuates, thereby causing deviation in the size of the extrudate.

[0004] In view of the above problems, we provide a system for regulating the feeding weight of a hot-feed extruder to solve the above-mentioned problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a system for regulating the feeding weight of a hot-feed extruder to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A system for regulating the feeding weight of a hot-feed extruder includes a bottom plate. On one side of the upper surface of the bottom plate, a first rubber mill is provided. Near the first rubber mill on the upper surface of the bottom plate, a first conveyor is provided. The feeding end of the first conveyor is arranged below the first rubber mill. On the upper surface of the bottom plate, a second rubber mill is also provided. The second rubber mill is arranged below the discharging end of the first conveyor. Near the second rubber mill on the upper surface of the bottom plate, a second conveyor is provided. The feeding end of the second conveyor is arranged below the second rubber mill. An extruder is arranged below the discharging end of the second conveyor.

[0008] As a further scheme of the utility model: The second rubber mill and the first rubber mill have the same structure.

[0009] As a further solution of the present utility model: The first kneader includes two side plates, the lower ends of the side plates are fixedly connected to the bottom plate, and two calendaring rollers are rotatably connected between the upper ends of the side plates. Both ends of the calendaring roller are fixedly connected with hollow pipe shafts, and the hollow pipe shafts are rotatably connected to the side plates. A cooling component for cooling the calendaring roller is provided on the calendaring roller, and a driving component for driving the hollow pipe shaft to rotate is further provided on one side of the side plate.

[0010] As a further solution of the present utility model: The cooling component includes a cooling channel, the cooling channel is arranged inside the calendaring roller, the cooling channel is communicated with the hollow pipe shaft, and rotary joints are arranged at the ends of the hollow pipe shafts far away from the calendaring roller. One port of the rotary joint is connected to the hollow pipe shaft, and a cooling pipe interface is connected to the other port of the rotary joint.

[0011] As a further solution of the present utility model: The driving component includes a second servo motor, the second servo motor is fixedly connected to the bottom of one side of the side plate, synchronous belt pulleys are installed at the output end of the second servo motor and one end of the hollow pipe shaft, and a synchronous belt is installed between the two synchronous belt pulleys.

[0012] As a further solution of the present utility model: The second conveyor has the same structure as the first conveyor.

[0013] As a further solution of the present utility model: The first conveyor includes a frame, the frame is fixedly connected to the bottom plate, conveyor rollers are rotatably connected to both ends of the frame, a transmission belt is installed between the two conveyor rollers, a first servo motor for driving the conveyor roller to rotate is provided on one side of the frame, and an auxiliary component for assisting the transmission belt to convey the rubber amount is provided at one end of the frame.

[0014] As a further solution of the present utility model: The auxiliary component includes a rotating shaft, the rotating shaft is rotatably connected to the bottom end of the frame, a plurality of rubber spreading wheels are fixedly connected to the rotating shaft, a second gear is fixedly connected to one end of the rotating shaft, and a first gear is fixedly connected to one end of the conveyor roller at the bottom of the transmission belt. The first gear and the second gear are meshed with each other.

[0015] As a further solution of the present utility model: A PLC controller is further provided on the bottom plate, and the second servo motor, the first servo motor and the extruder are all electrically connected to the PLC controller.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1. The present utility model realizes the weight control process of the rubber sheet supplied by the kneader, the weight control is accurate, and the weight adjustment speed is fast, improving the stability of the extrusion size of the extrudate and being beneficial to the improvement of product stability.

[0018] 3. This utility model adopts PLC control, which can realize the control of the roller speed adjustment of the open mill and the speed adjustment of the conveyor belt, so as to achieve the control of weight, feedback adjustment closed-loop control, and continuous adjustment until the weight of the supplied rubber sheet reaches the standard requirement range, preventing the occurrence of unqualified supplied rubber weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of this utility model.

[0020] Figure 2 It is a schematic structural diagram of the open mill in this utility model.

[0021] Figure 3 It is a schematic structural diagram of the conveyor in this utility model.

[0022] Figure 4 It is a schematic cross-sectional structural diagram of the calendering roller in this utility model.

[0023] Wherein: 1. Base plate; 2. Extruder; 3. Second conveyor; 4. Second open mill; 5. First conveyor; 6. First open mill.

[0024] 51. Transmission belt; 52. Rubber feeding wheel; 53. Rotating shaft; 54. First servo motor; 55. First gear; 56. Second gear; 57. Frame; 58. Conveyor roller;

[0025] 61. Side plate; 62. Hollow pipe shaft; 63. Timing belt; 64. Rotary joint; 65. Cooling pipe interface; 66. Calendering roller; 67. Timing belt pulley; 68. Second servo motor; 69. Cooling channel. SPECIFIC EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this utility model.

[0027] Embodiment 1

[0028] Please refer to Figures 1 - 4, in the embodiment of the present utility model, a hot-feed extruder rubber supply weight control system includes a bottom plate 1. On one side of the upper end surface of the bottom plate 1, a first kneader 6 is provided. Near the first kneader 6 on the upper end surface of the bottom plate 1, a first conveyor 5 is provided. The feeding end of the first conveyor 5 is arranged at the lower end of the first kneader 6. On the upper end surface of the bottom plate 1, a second kneader 4 is also provided. The second kneader 4 is arranged below the discharging end of the first conveyor 5. Near the second kneader 4 on the upper end surface of the bottom plate 1, a second conveyor 3 is provided. The feeding end of the second conveyor 3 is arranged below the second kneader 4. Below the discharging end of the second conveyor 3, an extruder 2 is provided.

[0029] The first kneader 6 conducts the hot refining process of the rubber sheet. After hot refining, it leads to the first conveyor 5 for the transportation process of the supplied rubber sheet. The first conveyor 5 for the supplied rubber sheet is driven by a first servo motor 54 to realize the conveying process of the supplied rubber sheet. Then the rubber sheet reaches the second kneader 4 for the secondary hot refining of the rubber sheet. Then the supplied rubber sheet is transported along the second conveyor 3 to the extruder 2. Then, taking the current of the servo motor of the extruder 2 as the input signal, the greater the supplied rubber amount, the greater the current of the extruder 2. The current of the servo motor of the extruder 2 is used as a signal to judge whether the rubber intake amount and the supplied rubber amount of the extruder 2 reach a stable state. By regulating the running speeds of the kneader and the conveyor, the control of the supplied rubber weight of the hot-feed extruder 2 is realized.

[0030] The second kneader 4 and the first kneader 6 have the same structure. The first kneader 6 includes two side plates 61. The lower ends of the side plates 61 are fixedly connected to the bottom plate 1. Between the upper ends of the side plates 61, two calendering rollers 66 are rotatably connected. Both ends of the calendering roller 66 are fixedly connected with hollow pipe shafts 62. The hollow pipe shafts 62 are rotatably connected to the side plates 61. A cooling component for cooling the calendering roller 66 is provided on the calendering roller 66, and a driving component for driving the hollow pipe shaft 62 to rotate is also provided on one side of the side plate 61. During operation, the two calendering rollers 66 are driven to rotate by the driving component, and the rotation of the calendering roller 66 realizes the kneading of the rubber sheet. The provided cooling component can be used to cool the calendering roller 66 to avoid the problem of overheating of the calendering roller 66.

[0031] The cooling component includes a second servo motor 68. The second servo motor 68 is arranged inside the calendering roller 66. One end of the hollow pipe shaft 62 far from the calendering roller 66 is provided with a rotary joint 64. One port of the rotary joint 64 is connected to the hollow pipe shaft 62, and the other port of the rotary joint 64 is connected with a cooling pipe interface 65.

[0032] During operation, cooling water is introduced from the cooling pipe interface 65 at one end of the calendering roller 66. The cooling water flows through the second servo motor 68 and then cools the calendering roller 66, and then flows out from the cooling pipe interface 65 at the other end of the calendering roller 66.

[0033] The driving assembly includes a second servo motor 68, which is fixedly connected to the bottom of one side of the side plate 61. Synchronous belt pulleys 67 are installed at both the output end of the second servo motor 68 and one end of the hollow tube shaft 62, and a synchronous belt 63 is installed between the two synchronous belt pulleys 67. During operation, the second servo motor 68 drives the synchronous belt pulley 67 at the output end of the second servo motor 68, and then the synchronous belt pulley 67 drives the synchronous belt 63 to operate. The operation of the synchronous belt 63 can drive the synchronous belt pulley 67 on the synchronous belt 63, thereby driving the hollow tube shaft 62 to rotate. The rotation of the hollow tube shaft 62 can drive the calendering roller 66 to rotate accordingly.

[0034] The 30 is of the same structure as the first conveyor 5. The first conveyor 5 includes a frame 57, which is fixedly connected to the bottom plate 1. Transmission rollers 58 are rotatably connected to both ends of the frame 57, and a transmission belt 51 is installed between the two transmission rollers 58. A first servo motor 54 for driving the transmission roller 58 to rotate is provided on one side of the frame 57, and an auxiliary assembly for assisting the transmission belt 51 to convey the rubber amount is provided at one end of the frame 57. During operation, the first servo motor 54 drives the transmission roller 58 at one end to rotate, and the rotation of the transmission roller 58 drives the transmission belt 51 to operate, thereby driving the rubber sheet to be conveyed.

[0035] A PLC controller is further provided on the bottom plate 1. The second servo motor 68, the first servo motor 54, and the extruder 2 are all electrically connected to the PLC controller. By using PLC control, it is possible to realize the control of the roller speed adjustment of the open mill and the speed adjustment of the conveyor belt, so as to achieve the control of the weight, feedback adjustment closed-loop control, and continuous adjustment until the weight of the supplied rubber sheet reaches the standard requirement range, preventing the occurrence of unqualified supplied rubber weight.

[0036] Embodiment 2

[0037] The difference from Embodiment 1 is that the auxiliary assembly includes a rotating shaft 53, which is rotatably connected to the bottom end of the frame 57. A plurality of rubber pushing wheels 52 are fixedly connected to the rotating shaft 53. A second gear 56 is fixedly connected to one end of the rotating shaft 53, and a first gear 55 is fixedly connected to one end of the transmission roller 58 at the bottom of the transmission belt 51. The first gear 55 and the second gear 56 are meshed with each other. During operation, the transmission roller 58 at the bottom transmits power to the first gear 55, and then drives the second gear 56 to rotate. The rotation of the second gear 56 can drive the rotating shaft 53 to rotate. The rotation of the rotating shaft 53 drives the rubber pushing wheels 52 to rotate, and the rotation of the rubber pushing wheels 52 can cooperate with the transmission belt 51 to realize the conveying of the rubber sheet.

[0038] The working principle of the utility model is as follows: The second servo motor 68 drives the synchronous belt 63 to run, thereby driving the calendering roller 66 to rotate. After adding the rubber compound, the calendering roller 66 rotates and comes into contact with the rubber compound, generating heat through the contact rotation, which realizes the hot refining process of the rubber compound. The cooling water is transported by connecting the cooling pipe interface 65 with the hollow pipe shaft 62. The cooling circulating water flows through the transfer roller 58 inside the calendering roller 66 and is finally discharged, realizing the cooling process of the calendering roller 66. After hot refining, the leading end of the rubber compound is led to the first conveyor 5 for transporting the supplied rubber film. The conveyor belt 51 of the supplied rubber film is driven by the first servo motor 54 to realize the conveying process of the supplied rubber film, and then it reaches the second kneader 4 for secondary hot refining of the film. Then, the second conveyor 3 for the supplied rubber film transports it to the extruder 2. Then, the current of the servo motor of the extruder 2 is used as an input signal. The greater the supplied rubber amount, the greater the current of the extruder 2. The current of the servo motor of the extruder 2 is used as a signal to judge whether the rubber feeding amount and the supplied rubber amount of the extruder 2 reach a stable state, and the supplied rubber weight of the hot-feed extruder is regulated by controlling the running speeds of the kneader and the conveyor belt.

[0039] The current of the servo motor of the extruder 2 is used as an input signal and sent to the PLC module. The PLC module judges whether it is within the standard requirement range. If it meets the standard requirement range, the second conveyor 3, the first conveyor 5, the second kneader 4, and the first kneader 6 maintain the current speed.

[0040] If the current of the extruder 2 is higher than the standard range requirement and the supplied rubber amount of the extruder 2 is excessive, a signal is transmitted to the second servo motor 68 of the second kneader 4 and the first kneader 6 and the first servo motor 54 of the second conveyor 3 and the first conveyor 5 to slow down the speed. Both the two kneaders and the conveyor belt are controlled by servo motors, and the speed of the conveyor belt and the roller speed of the kneaders are slowed down simultaneously. The speeds of the two kneaders are slowed down, the speed of the calendering roller 66 is slowed down, and the supplied rubber amount decreases accordingly, completing the process of regulating and reducing the speed of the rubber compound. The speeds of the kneaders and the conveyor belt are the same, maintaining a stable supply of materials.

[0041] If the current of the extruder is lower than the standard range requirement, a signal is transmitted to the second servo motor 68 of the second kneader 4 and the first kneader 6 and the first servo motor 54 of the second conveyor 3 and the first conveyor 5 to speed up the speed. Both the two kneaders and the conveyor belt are controlled by servo motors, and the speeds are increased simultaneously. The speeds of the two kneaders are increased, and the speed of the calendering roller is increased, that is, the supplied rubber amount increases, completing the process of regulating and increasing the speed of the rubber compound. The speeds of the kneaders and the conveyor belt are the same, maintaining a stable supply of materials. The stepped increase or decrease in speed can be manually set and controlled, realizing the stepped control of the speed change amount.

[0042] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Although this specification is described according to the implementation manners, not every implementation manner only contains one technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation manners that can be understood by those skilled in the art.

Claims

1. The hot feed extruder rubber feeding weight control system, including a bottom plate (1), is characterized in that: On one side of the upper end surface of the bottom plate (1), a first kneader (6) is provided. Near the first kneader (6) on the upper end surface of the bottom plate (1), a first conveyor (5) is provided. The feeding end of the first conveyor (5) is arranged at the lower end of the first kneader (6). On the upper end surface of the bottom plate (1), a second kneader (4) is further provided. The second kneader (4) is arranged below the discharging end of the first conveyor (5). Near the second kneader (4) on the upper end surface of the bottom plate (1), a second conveyor (3) is provided. The feeding end of the second conveyor (3) is arranged below the second kneader (4). An extruder (2) is provided below the discharging end of the second conveyor (3).

2. The glue supply weight control system of the hot feed extruder according to claim 1, wherein The second kneader (4) and the first kneader (6) have the same structure.

3. The rubber feeding weight control system of the hot feed extruder according to claim 2, characterized in that, The first kneader (6) includes two side plates (61). The lower ends of the side plates (61) are fixedly connected to the bottom plate (1). Between the upper ends of the side plates (61), two calendaring rollers (66) are rotatably connected. Both ends of the calendaring roller (66) are fixedly connected with hollow tube shafts (62). The hollow tube shafts (62) are rotatably connected to the side plates (61). A cooling component for cooling the calendaring roller (66) is provided on the calendaring roller (66). A driving component for driving the hollow tube shaft (62) to rotate is further provided on one side of the side plate (61).

4. The hot feed extruder rubber feeding weight control system according to claim 3, characterized in that, The cooling component includes a cooling channel (69). The cooling channel (69) is arranged inside the calendaring roller (66). The cooling channel (69) is communicated with the hollow tube shaft (62). Rotary joints (64) are provided at the ends of the hollow tube shafts (62) far from the calendaring roller (66). One port of the rotary joint (64) is connected to the hollow tube shaft (62), and a cooling pipe interface (65) is connected to the other port of the rotary joint (64).

5. The glue supply weight control system of the hot feed extruder according to claim 3, characterized in that, The driving component includes a second servo motor (68). The second servo motor (68) is fixedly connected to the bottom of one side of the side plate (61). Synchronous belt pulleys (67) are installed at the output end of the second servo motor (68) and one end of the hollow tube shaft (62). A synchronous belt (63) is installed between the two synchronous belt pulleys (67).

6. The rubber feeding weight control system of the hot feed extruder according to claim 1, characterized in that, The second conveyor (3) and the first conveyor (5) have the same structure.

7. The rubber feeding weight control system of the hot feed extruder according to claim 5, characterized in that, The first conveyor (5) includes a frame (57). The frame (57) is fixedly connected to the bottom plate (1). Transmission rollers (58) are rotatably connected to both ends of the frame (57). A transmission belt (51) is installed between the two transmission rollers (58). A first servo motor (54) for driving the transmission roller (58) to rotate is provided on one side of the frame (57). An auxiliary component for assisting the transmission belt (51) to convey the rubber amount is provided at one end of the frame (57).

8. The rubber feeding weight control system of the hot feed extruder according to claim 7, wherein The auxiliary component includes a rotating shaft (53), the rotating shaft (53) is rotatably connected to the bottom end of the frame (57), a plurality of rubber scraping wheels (52) are fixedly connected to the rotating shaft (53), one end of the rotating shaft (53) is fixedly connected to a second gear (56), and one end of a conveying roller (58) at the bottom of the conveyor belt (51) is fixedly connected to a first gear (55), and the first gear (55) and the second gear (56) are meshed with each other.

9. The glue supply weight control system of the hot feed extruder according to claim 8, characterized in that, A PLC controller is further provided on the bottom plate (1), and the second servo motor (68), the first servo motor (54) and the extruder (2) are all electrically connected to the PLC controller.

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