A speed control mechanism for top bolt of internal mixer

Abstract

The utility model relates to a speed control mechanism for an upper push bolt of an internal mixer, relates to the technical field of internal mixers, and solves the problem that the upper push bolt in the existing internal mixer has no buffer during the lifting process, has a high speed, is easy to collide with the internal mixer top plate or squeezes out the powder in the internal mixer to pollute the working environment. The utility model comprises a sensing component, a support rod arranged on the internal mixer housing, and a first sensing switch, a second sensing switch, a third sensing switch, and a fourth sensing switch arranged on the support rod in sequence from top to bottom; a sensing switch trigger, and the sensing switch trigger is arranged on a connecting plate; the first sensing switch, the second sensing switch, the third sensing switch, the fourth sensing switch, the sensing switch trigger, and a lifting drive are all connected with the control component signal; the mechanism has the effect of reducing the collision and deformation of the internal top plate of the internal mixer and reducing the impact of the powder material on the powder material and splashing outside the feeding door of the internal mixer, so as to ensure the stability of the quality of the mixed rubber.

Description

Technical Field

[0001] The utility model relates to the technical field of internal mixers, in particular to a speed control mechanism for a top bolt on an internal mixer. Background Art

[0002] The existing patent announcement number "CN205905233U" announces an upper bolt device for an internal mixer, a pressure weight is installed at the lower part of the upper bolt cylinder, and a magnetic switch for detecting the position of the piston is installed inside the upper bolt cylinder; a spring is installed on the feeding door shaft by screws, and a sealing copper plate is provided at the sealing part of the feeding door shaft under the spring. The utility model discloses an upper bolt device for an internal mixer with automatic detection and automatic adjustment of sealing, a magnetic switch is designed on the upper bolt cylinder, and the working position of the upper bolt is automatically detected by the magnetic switch, replacing the traditional structure of the travel switch or the proximity switch combined with the detection plate detection, thereby improving the stability and reliability of the upper bolt position detection, and is conducive to improving the working efficiency and quality of the internal mixer; the feeding door shaft seal of the upper bolt adopts a spring automatic adjustment seal structure, replacing the conventional feeding door using an ordinary rubber ring seal or a manually adjusted seal structure, thereby improving the sealing performance of the upper bolt, saving maintenance time, and improving production efficiency.

[0003] The above content describes the following problems. The upper push bolt (pressure weight) in the internal mixer of this structure is arranged in the housing of the internal mixer. The upper push bolt is driven by the upper push bolt cylinder to raise and lower the housing of the internal mixer without any buffer. It rises rapidly during the lifting process, causing the upper push bolt to collide with the top plate of the internal mixer, resulting in bumps. Over time, the bottom of the top plate of the internal mixer will be deformed and affect normal use. At the same time, during the descent of the upper push bolt, due to the rapid descent speed, in the early stage of mixing, the carbon black, white carbon black and other powders in the mixing chamber are impacted by the rapid fall of the upper push bolt, causing a lot of materials such as carbon black and white carbon black to be ejected upward, resulting in inaccurate weight ratio of the formula. At the same time, it is ejected to the feeding port of the internal mixer on the operating table, causing great pollution, seriously affecting the operating environment and the accuracy of the formula, and causing great impact on the quality of the mixed rubber and the operating environment. Utility Model Content

[0004] The utility model aims to provide a speed control mechanism for an upper push bolt of an internal mixer, which solves the problem that the upper push bolt in the existing internal mixer has no buffer during the lifting process, has a high speed, is easy to collide with the top plate of the internal mixer or squeeze out the powder in the internal mixer to pollute the working environment.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a speed control mechanism for an upper push bolt of an internal mixer, wherein the internal mixer comprises an internal mixer housing, an upper push bolt arranged in the internal mixer housing, and a moving rod driving the upper push bolt to move longitudinally, wherein the top end of the moving rod extends upward out of the internal mixer housing;

[0007] It also includes a lifting assembly, which includes a connecting plate arranged at the top end of the moving rod and a lifting driving member driving the connecting plate to move longitudinally back and forth;

[0008] It is characterized in that the speed control mechanism comprises:

[0009] A sensing component, the sensing component comprising a support rod vertically arranged on the mixer housing and a first sensing switch, a second sensing switch, a third sensing switch, and a fourth sensing switch arranged on the support rod in order from top to bottom;

[0010] An induction switch trigger, which is arranged on the connecting plate and is used to trigger the start and stop of the first induction switch, the second induction switch, the third induction switch and the fourth induction switch;

[0011] The control component, the first induction switch, the second induction switch, the third induction switch, the fourth induction switch, the induction switch trigger, and the lifting drive are all connected to the control component signal.

[0012] Furthermore, the distance between the first induction switch and the second induction switch is 20-25 cm, the distance between the second induction switch and the third induction switch is 40-60 cm, and the distance between the third induction switch and the fourth induction switch is 20-25 cm.

[0013] Furthermore, the first induction switch, the second induction switch, the third induction switch, and the fourth induction switch are respectively slidably connected to the support rod via sliding members.

[0014] Furthermore, the sliding member includes a strip-shaped hole vertically arranged on the support rod, a sliding block, a fastening bolt arranged on one end surface of the sliding block and passing through the strip-shaped hole, and a fastening nut threadedly connected to the fastening bolt.

[0015] Furthermore, a scale is vertically arranged on the support rod and located on one side of the strip-shaped hole.

[0016] Furthermore, the lifting drive component includes a lifting cylinder and a start-stop valve for triggering the operation of the lifting cylinder, and the start-stop valve is connected to the control component signal.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The utility model provides a speed control mechanism for an upper push bolt of an internal mixer, which can adjust the rising speed or the falling speed of the upper push bolt, so as to reduce the impact and deformation of the upper push bolt on the top fixing plate of the internal mixer during the rising process, thereby increasing the service life of the internal mixer; or to reduce the impact on the powder material during the descending process and the problem of splashing back to the feeding door of the internal mixer, so as to ensure the accuracy of the compounding of the rubber and the stability of the quality of the rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the upper push bolt in the preferred embodiment of the utility model rising to the highest point;

[0021] Figure 2 It is a schematic diagram of the overall structure of the upper ejector bolt in the preferred embodiment of the utility model dropped to the lowest point;

[0022] Figure 3 It is a structural schematic diagram of the speed control mechanism in the preferred embodiment of the utility model;

[0023] Figure 4 It is a structural side sectional view of the speed control mechanism in the preferred embodiment of the utility model.

[0024] The reference numerals are described as follows:

[0025] 1. Internal mixer housing; 2. Top bolt; 3. Moving rod; 4. Guide rod;

[0026] 5. Lifting assembly; 51. Connecting plate; 52. Lifting drive member; 521. Lifting cylinder; 522. Start-stop valve;

[0027] 6. Induction component; 61. Support rod; 62. First induction switch; 63. Second induction switch; 64. Third induction switch; 65. Fourth induction switch;

[0028] 7. Induction switch trigger; 8. Control component;

[0029] 9. Sliding member; 91. Strip hole; 92. Sliding block; 94. Fastening bolt; 95. Fastening nut;

[0030] 10. Ruler. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the ejector speed control mechanism or element on the internal mixer must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] refer to Figure 1 and Figure 2 , which is a speed control mechanism for an upper push bolt of an internal mixer provided by the utility model, wherein the internal mixer comprises an internal mixer housing 1, an upper push bolt 2 arranged in the internal mixer housing 1 and a moving rod 3 driving the upper push bolt 2 to move longitudinally, and the top end of the moving rod 3 extends upward out of the internal mixer housing 1;

[0035] It also includes a lifting assembly 5, which includes a connecting plate 51 disposed at the top of the moving rod 3 and a lifting drive 52 that drives the connecting plate 51 to move back and forth longitudinally. There are two lifting drives 52, which are respectively disposed at both ends of the length direction of the connecting plate 51. The lifting drive 52 includes a lifting cylinder 521 and a start-stop valve 522 that triggers the lifting cylinder 521 to work; a lifting cylinder and a start-stop valve that controls the lifting cylinder can also be used;

[0036] There are two guide rods 4 , which are respectively vertically arranged on both sides of the moving rod 3 and located between the two lifting drive members 52 . The top ends of the two guide rods 4 are connected by a fixing plate; and the connecting plate 51 is slidably sleeved on the guide rods 4 .

[0037] refer to Figure 1-Figure 3 , the speed control mechanism includes:

[0038] The induction component 6 includes a support rod 61 vertically arranged on the mixer housing 1 and a first induction switch 62, a second induction switch 63, a third induction switch 64, and a fourth induction switch 65 arranged on the support rod 61 from top to bottom; the distance between the first induction switch and the fixed plate is 20-25 cm, the distance between the first induction switch 62 and the second induction switch 63 is 20-25 cm, the distance between the second induction switch 63 and the third induction switch 64 is 40-50 cm, and the distance between the third induction switch 64 and the fourth induction switch 65 is 20-25 cm. In this example, the distance between the first induction switch and the fixed plate is 20 cm, the distance between the first induction switch 62 and the second induction switch 63 is 20 cm, the distance between the second induction switch 63 and the third induction switch 64 is 50 cm, and the distance between the third induction switch 64 and the fourth induction switch 65 is 20 cm;

[0039] The induction switch trigger 7 is arranged on the connecting plate 51, and is used to trigger the start and stop of the first induction switch 62, the second induction switch 63, the third induction switch 64, and the fourth induction switch 65; the induction switch trigger and the first induction switch 62, the second induction switch 63, the third induction switch 64, and the fourth induction switch 65 are triggered by magnetic induction;

[0040] The control component 8 , the first induction switch 62 , the second induction switch 63 , the third induction switch 64 , the fourth induction switch 65 , the induction switch trigger 7 , and the start-stop valve 521 are all connected to the control component 8 by signal.

[0041] refer to Figure 1-Figure 3 Working principle: When the internal mixer is working, the lifting cylinder 521 drives the upper ejector bolt 2 to rise from the lowest point to the highest point. When the induction switch trigger 7 on the connecting plate 51 rises to the position of the second induction switch 63, the second induction switch 63 is triggered to work. At this time, the second induction switch 63 transmits a signal to the control component 8, and the control component 8 controls the extension speed of the lifting cylinder 521, thereby controlling the rising speed of the upper ejector bolt 2 to slow down, so that the upper ejector bolt 2 rises slowly. When the induction switch trigger 7 triggers the first induction switch 62, the first induction switch 62 transmits a signal to the control component 8, and the control component 8 controls the lifting cylinder 621 to stop working, thereby controlling the upper ejector bolt 2 to continue to rise.

[0042] After stopping for a certain period of time, the control component 8 controls the lifting cylinder 521 to work so that it drives the upper push bolt 2 to move downward. That is, in the process of the lifting cylinder 521 driving the upper push bolt 2 to descend from the highest point to the lowest point, when the induction switch trigger 7 on the connecting plate 51 descends to the position of the third induction switch 64, the induction switch trigger 7 on the connecting plate 51 triggers the third induction switch 64 to work. At this time, the third induction switch 64 transmits a signal to the control component 8, and the control component 8 controls the retraction speed of the lifting cylinder 521, thereby controlling the descending speed of the upper push bolt 2 to slow down, so that the upper push bolt 2 slowly moves. Descending, when the induction switch trigger 7 triggers the fourth induction switch 65, the fourth induction switch 65 transmits a signal to the control component 8, and the control component 8 controls the lifting cylinder 621 to continue to drive the upper push bolt 2 to continue to descend. When the material is subjected to the internal mixing treatment, the material will exert an upward thrust on the upper push bolt, and the push bolt 2 will float vertically under the action of the thrust. When the control component 8 controls the lifting cylinder 621 to continue to drive the upper push bolt 2 to continue to descend for a certain period of time, the control component 8 controls the lifting cylinder 521 to work in the reverse direction to drive the upper push bolt to move upward, and then repeats the above-mentioned actions.

[0043] Therefore, the speed control mechanism can adjust the speed of the longitudinal movement of the upper push bolt 2 to avoid the upper push bolt 2 hitting the upper top surface of the internal mixer housing 1 due to inertia during the rapid rise process, thereby protecting the mixer housing 1 and extending the service life of the mixer. Or it can avoid the reverse impact on the powders such as carbon black, white carbon black, light calcium in the early stage of mixing during the rapid descent process, so that these powders with low density splash upward, causing inaccurate proportions, affecting the stability of the quality of the mixed rubber, and splashing on the platform around the feeding door, causing pollution to the operating environment.

[0044] refer to Figure 1 , Figure 3 and Figure 4 , the first induction switch 62, the second induction switch 63, the third induction switch 64, and the fourth induction switch 65 are respectively slidably connected to the support rod 61 through the sliding member 9. The sliding member 9 includes a strip hole 91 vertically arranged on the support rod 61, a sliding block 92, a fastening bolt 94 arranged on one end face of the sliding block 92 and passing through the strip hole 91, and a fastening nut 95 threadedly connected to the fastening bolt 94. The induction switch is fixed on the other side of the sliding block 93. The position of the induction switch can be adjusted according to the actual working environment to achieve the desired buffering effect and buffering distance. A scale 10 is vertically arranged on the support rod 61 and on one side of the strip hole 91. The scale 10 is used to facilitate viewing and adjusting the adjustment distance of the induction switch.

[0045] In summary: the speed control mechanism can be used to adjust the rising speed or falling speed of the upper push bolt 2, so as to reduce the impact and deformation of the upper push bolt 2 on the upper top surface of the internal mixer housing 1 during the rising process, thereby increasing the service life of the internal mixer; or to reduce the impact of the powder material on the powder material and the splashing problem outside the mixer feeding door during the descending process, so as to ensure the accuracy of the mixed rubber and the stability of the mixed rubber quality.

[0046] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A mechanism for controlling the speed of an upper ejector bolt of an internal mixer, the internal mixer comprising an internal mixer housing (1), an upper ejector bolt (2) arranged in the internal mixer housing (1), and a moving rod (3) for driving the upper ejector bolt (2) to move longitudinally, wherein the top end of the moving rod (3) extends upward out of the internal mixer housing (1); It also includes a lifting assembly (5), the lifting assembly (5) including a connecting plate (51) arranged at the top end of the moving rod (3) and a lifting driving member (52) driving the connecting plate (51) to move longitudinally back and forth; It is characterized in that The speed control mechanism includes: A sensing component (6), the sensing component (6) comprising a support rod (61) vertically arranged on the internal mixer housing (1), and a first sensing switch (62), a second sensing switch (63), a third sensing switch (64), and a fourth sensing switch (65) arranged on the support rod (61) in order from top to bottom; An induction switch trigger (7), the induction switch trigger (7) being arranged on the connecting plate (51) and being used to trigger the start and stop of the first induction switch (62), the second induction switch (63), the third induction switch (64), and the fourth induction switch (65); The control component (8), the first induction switch (62), the second induction switch (63), the third induction switch (64), the fourth induction switch (65), the induction switch trigger (7), and the lifting drive member (52) are all connected to the control component (8) by signal.

2. The top bolt speed control mechanism of the internal mixer according to claim 1, characterized in that: The distance between the first induction switch (62) and the second induction switch (63) is 20-25 cm, the distance between the second induction switch (63) and the third induction switch (64) is 40-60 cm, and the distance between the third induction switch (64) and the fourth induction switch (65) is 20-25 cm.

3. The top bolt speed control mechanism of the internal mixer according to claim 1 or 2, characterized in that: The first induction switch (62), the second induction switch (63), the third induction switch (64), and the fourth induction switch (65) are respectively slidably connected to the support rod (61) via a sliding member (9).

4. The top bolt speed control mechanism of the internal mixer according to claim 3, characterized in that: The sliding member (9) comprises a strip-shaped hole (91) vertically arranged on the support rod (61), a sliding block (92), a fastening bolt (94) arranged on one end surface of the sliding block (92) and passing through the strip-shaped hole (91), and a fastening nut (95) threadedly connected to the fastening bolt (94).

5. The speed control mechanism for the top bolt of the internal mixer according to claim 4, characterized in that: A scale (10) is vertically arranged on the support rod (61) and located on one side of the strip-shaped hole (91).

6. The top bolt speed control mechanism of an internal mixer according to claim 1 or 4, characterized in that: The lifting drive component (52) comprises a lifting cylinder (521) and a start-stop valve (522) for triggering the lifting cylinder (521) to operate, and the start-stop valve (522) is connected to the control component (8) by signal.

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