Simple rubber pre-kneading machine

Abstract

The utility model provides a simple rubber pre-kneading machine which comprises a protective shell, and further comprises a horizontally-arranged pressing rod, a supporting rod arranged under the pressing rod in parallel and a lifting air cylinder fixedly connected with the top end of the pressing rod, the pressing rod moves up and down and penetrates through the outer side of the protective shell, and the lifting air cylinder is fixed to the top end of the protective shell. One end of the supporting rod penetrates through the outer side of the protective shell, and the other end is fixed at the inner end of the protective shell through a supporting plate; the pressing rod and the supporting rod are both connected with the heater. A pressing block is fixedly arranged on the bottom face of the outer end of the pressing rod. According to the simple rubber pre-kneading machine provided by the utility model, the two ends of a rubber strip are automatically pre-kneaded into rings, the dimensional accuracy and the aesthetic degree are improved, time and labor are saved, and the labor productivity is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber product forming and processing, and particularly relates to a simple rubber pre-kneading machine. Background Art

[0002] Rubber products refer to activities of producing various rubber products with natural and synthetic rubbers as raw materials, and also include rubber products produced by recycling waste rubbers. The output of synthetic rubbers has far exceeded that of natural rubbers, and the largest output is styrene-butadiene rubber. The basic production process of rubber products includes basic processes such as plasticating, mixing, calendering, extruding, molding, and vulcanizing. The rubber sealing ring belonging to rubber products is an annular cover composed of one or several parts, fixed on a race or washer of a bearing and contacting or forming a narrow labyrinth gap with another race or washer to prevent lubricating oil from leaking out and foreign objects from invading. It is mainly used for installation on various mechanical equipment and plays a sealing role in a static or moving state under specified temperature, pressure, and different liquids and gases.

[0003] The current production process of rubber sealing rings is: rubber compound preparation - cutting to obtain rubber strips - pre-kneading the two ends of the rubber strips into circles - molding and vulcanizing - obtaining the sealing rings. However, in the process of pre-kneading the rubber strips into circles, manual clamping and forming are often used in the prior art, which is time-consuming and laborious, and the shapes of the ends are inconsistent, resulting in an uneven parting line position of the molded products, affecting the appearance and practicality of the products.

[0004] Therefore, this solution proposes a simple rubber pre-kneading machine to solve the technical problem of how to automatically pre-knead the two ends of rubber strips into circles and improve the dimensional accuracy and aesthetics. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a simple rubber pre-kneading machine, which solves the technical problem of how to automatically pre-knead the two ends of rubber strips into circles, improves the dimensional accuracy and aesthetics, saves time and effort, and improves labor productivity.

[0006] A simple rubber pre-kneading machine includes a protective shell, and also includes a horizontally arranged pressing rod, a support rod parallelly arranged directly below the pressing rod, and a lifting cylinder fixedly connected to the top end of the pressing rod. The pressing rod moves up and down and passes through the outside of the protective shell. The lifting cylinder is fixed at the top end of the protective shell. One end of the support rod passes through the outside of the protective shell, and the other end is fixed to the inner end of the protective shell through a support plate; both the pressing rod and the support rod are connected to a heater.

[0007] A pressing block is fixedly arranged on the bottom surface of the outer end of the pressing rod.

[0008] The inner end of the pressing rod is fixedly connected to a slider, and the slider slides up and down on a guide rail.

[0009] A pressure sensor is provided at the inner end of the pressure rod, and the pressure sensor is in contact with the upper end of the support plate;

[0010] The pressure sensor is connected to the heater through a controller.

[0011] It also includes a temperature sensor, the temperature sensor is connected to the pressing block, and the temperature sensor is connected to the display panel.

[0012] The lifting cylinder is connected to a time delay device, and the time delay device is connected to the controller.

[0013] One end of the protective shell is provided with a hand support, and the hand support is arranged below the support rod.

[0014] The positive effects of the present utility model are as follows:

[0015] (1) The pressure generated by the cylinder structure presses the two ends of the material together, improving the phenomenon of hand pain caused by manual pinching and increasing the production efficiency.

[0016] (2) The rubber is preheated and pressurized through the heating device. By the characteristics of the rubber becoming soft and sticky after preheating, the firmness is increased, and the problem that special materials are difficult to hold firmly and are easy to open is improved.

[0017] (3) The pressing time is accurately controlled through the time delay device to ensure that the pressing force is consistent, improving the problem of large errors in the inconsistent sizes of the manually pinched circles.

[0018] (4) This device is small and convenient, with a volume of 160mm * 160mm * 330mm, and does not occupy too much workbench space.

[0019] (5) A hand support is also added at the bottom of the work to avoid safety accidents caused by unstable hand tremors; the device is safe, convenient and practical. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the rubber pre - pinching machine in the present utility model Figure 1 。

[0021] Figure 2 It is a schematic structural diagram of the rubber pre - pinching machine in the present utility model Figure 2 。

[0022] Figure 3 It is a schematic position and structural diagram of the pressure rod and the support rod in the present utility model.

[0023] Figure 4 It is a schematic structural diagram of the rubber ring in the present utility model.

[0024] Among them, the attached drawing reference numerals are: 1, bottom plate; 2, controller; 3, protective shell; 4, lifting cylinder; 5, hand support; 6, pressure bar; 7, pressure block; 8, anti-scald and anti-pinch protective sleeve; 81, support plate; 9, guide rail; 10, slider; 11, rubber ring. Detailed implementation manner

[0025] In order to more clearly illustrate the technical features of this solution, the following will elaborate on this solution through specific implementation manners.

[0026] See Figure 1 - Figure 4 , a simple rubber pre-kneading machine, including a protective shell 3, further including a horizontally arranged pressure bar 6, a support rod arranged parallel to and directly below the pressure bar 6, and a lifting cylinder 4 fixedly connected to the top end of the pressure bar 6. The pressure bar 6 moves up and down and passes through the outside of the protective shell 3. The lifting cylinder 4 is fixed to the top end of the protective shell 3. One end of the support rod passes through the outside of the protective shell 3, and the other end is fixed to the inner end of the protective shell 3 through a support plate 81; both the pressure bar 6 and the support rod are connected to a heater.

[0027] Preferably, an anti-scald and anti-pinch protective sleeve 8 is wrapped around the outside of the support rod.

[0028] Preferably, the bottom end of the protective shell 3 is fixed to the bottom plate 1.

[0029] A pressure block 7 is fixedly arranged on the bottom surface of the outer end of the pressure bar 6.

[0030] The inner end of the pressure bar 6 is fixedly connected to a slider 10, and the slider 10 slides up and down on a guide rail 9.

[0031] A pressure sensor is arranged at the inner end of the pressure bar 6, and the pressure sensor contacts the upper end of the support plate 81;

[0032] The pressure sensor is connected to the heater through the controller 2.

[0033] It further includes a temperature sensor, the temperature sensor is connected to the pressure block 7, and the temperature sensor is connected to a display panel.

[0034] The lifting cylinder 4 is connected to a timer, and the timer is connected to the controller 2.

[0035] One end of the protective shell 3 is provided with a hand support 5, and the hand support 5 is arranged below the support rod.

[0036] The specific working process of the present utility model:

[0037] See Figure 4, during use, manually hold both ends of the rubber ring 11 so that one end is above the other end, and place it between the pressure rod 6 and the support rod. The lifting cylinder 4 operates to press down the pressure rod 6, so that both ends of the rubber ring 11 are pressed together and bonded together; then the rubber ring 11 is retracted and used for subsequent molding processes.

[0038] When the hardness of the rubber ring 11 is relatively large, the pressure reading of the pressure sensor increases. When it exceeds the vertical force F, the controller controls the heater to heat the pressure rod and the support rod. At the same time, the temperature reading is displayed on the display panel connected to the temperature sensor. During heating, the controller controls the lifting cylinder 4 to delay rising until the pressure reading of the pressure sensor drops below F. Then the controller controls the heater to stop heating, and at the same time the lifting cylinder 4 rises to remove the rubber ring 11, and then follows the next cycle of ring-pinching operation.

[0039] The technical features not described in the present utility model can be realized by or adopted from the prior art, and will not be elaborated here. Of course, the above description is not a limitation to the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A simple rubber pre-kneading machine, comprising a protective shell, characterized in that: It also includes a horizontally arranged pressure rod, a support rod arranged parallel to and directly below the pressure rod, and a lifting cylinder fixedly connected to the top end of the pressure rod. The pressure rod moves up and down and passes through the outer side of the protective shell. The lifting cylinder is fixed to the top end of the protective shell. One end of the support rod passes through the outer side of the protective shell, and the other end is fixed to the inner end of the protective shell through a support plate. Both the pressure rod and the support rod are connected to the heater.

2. The simple rubber pre-kneading machine according to claim 1, characterized in that: A pressure block is fixedly arranged on the bottom surface of the outer end of the pressure rod.

3. The simple rubber pre-kneading machine according to claim 1, characterized in that: The inner end of the pressure rod is fixedly connected to the sliding block, and the sliding block is slidably arranged on the guide rail.

4. The simple rubber pre-kneading machine according to claim 1, characterized in that: The inner end of the pressure rod is provided with a pressure sensor, and the pressure sensor is in contact with the upper end of the support plate; The pressure sensor is connected to the heater through a controller.

5. The simple rubber pre-kneading machine according to claim 2, characterized in that: It also includes a temperature sensor, which is connected to the pressing block and connected to the display panel.

6. The simple rubber pre-kneading machine according to claim 1, characterized in that: The lifting cylinder is connected to a time delay device, and the time delay device is connected to a controller.

7. The simple rubber pre-kneading machine according to claim 1, characterized in that: A hand support is arranged at one end of the protective shell, and the hand support is arranged below the support rod.

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