A production process of high damping coefficient IIR shock-absorbing rubber foot material

Abstract

The present application relates to a production process of a high damping coefficient IIR shock-absorbing rubber foot material, comprising the following steps: S1, batching: weighing various raw materials according to a formula, and classifying and storing the various raw materials in different designated containers, including 10 parts of butyl rubber with an unsaturation range of 1.5% to 1.9%; 4.5 parts of carbon black N330; 4.8 parts of paraffin oil; 0.15 parts of paraffin; 0.1 parts of zinc stearate; 0.1 parts of stearic acid; 0.5 parts of zinc oxide; 0.1 parts of vulcanizing agent; S2, internal mixing: adding butyl rubber raw rubber to an internal mixer and plasticizing for 2 minutes, then adding carbon black, antioxidant and plasticizer for internal mixing; S3, open mixing: adding vulcanizing agent, accelerator and cross-linking agent to the mixed rubber in an open mixer, and then discharging sheets; S4, post-processing. It uses butyl rubber with a specific degree of unsaturation, high wear-resistant furnace black HAF, and adjusts the plasticizer and vulcanizer to the most appropriate ratio to achieve the ideal damping coefficient and ideal elasticity.

Description

Technical Field

[0001] The invention relates to the field of rubber production, in particular to a production process of a high damping coefficient IIR shock-absorbing rubber foot material. Background Art

[0002] Butyl rubber is a rubber obtained by copolymerizing isobutylene with a small amount of isoprene. It has the worst elasticity among general-purpose rubbers and a low room temperature impact rebound rate. Due to the largest steric hindrance and large internal friction between molecules, it has high damping performance. Due to the unique properties of butyl rubber polymers, it is widely used in the manufacture of inner tubes, anti-vibration rubber, industrial rubber sheets, medical rubber and many other aspects.

[0003] For rubber feet, the rubber needs to have a high damping coefficient and preferably a certain degree of elasticity, so that it can be better used in mechanical equipment with high shock absorption and low noise requirements. At present, in the production of rubber, it is difficult to take into account the requirements of high damping coefficient and elasticity at the same time. Summary of the invention

[0004] The present application provides a production process of a high damping coefficient IIR shock-absorbing rubber foot material. In order to make the rubber maintain a high damping coefficient while having a certain elasticity, the optimal ratio is achieved and applied to mechanical protection rubber feet with high shock absorption and low noise requirements.

[0005] The production process of a high damping coefficient IIR shock-absorbing rubber foot material provided in this application adopts the following technical solution:

[0006] A production process of a high damping coefficient IIR shock-absorbing rubber foot material comprises the following steps:

[0007] S1, ingredients: weigh various raw materials according to the formula, and store them in different designated containers, including 10 parts of butyl rubber with an unsaturation range of 1.5% to 1.9%; 4.5 parts of carbon black N330; 4.8 parts of paraffin oil; 0.15 parts of paraffin; 0.1 parts of zinc stearate; 0.1 parts of stearic acid; 0.5 parts of zinc oxide; 0.1 parts of vulcanizing agent;

[0008] S2, mixing: add butyl rubber raw rubber into the mixer and mix for 2 minutes, then add carbon black, antioxidant and plasticizer for mixing. The mixing time is 12 minutes and the mixing temperature does not exceed 150°C.

[0009] S3, open refining: add vulcanizing agent, accelerator and cross-linking agent to the mixed rubber in an open refining mill, with the roller temperature at 40-50°C and the roller distance at 2-3mm, and pass through the mixture 3 times in the form of a triangular package for 8 minutes, and then produce a sheet;

[0010] S4, post-processing: place the rubber in a ventilated place at room temperature for 3 hours before testing and storage.

[0011] By adopting the above technical solution, butyl rubber with a specific unsaturation degree (unsaturation range is 1.5% to 1.9%), high wear-resistant furnace black HAF, and plasticizer and vulcanizer are adjusted to the most appropriate ratio to achieve the ideal damping coefficient (at room temperature of 25 degrees Celsius, the loss factor Tan (δ) is about 0.25) and ideal elasticity.

[0012] Preferably, the open mill comprises a frame and an open mill assembly, the open mill assembly comprises a first driving assembly arranged on the frame and a front roller and a rear roller rotatably connected to the frame, the first driving assembly is used to drive the front roller and the rear roller to rotate in opposite directions at different speeds, and also comprises a base, a receiving tray and a first spring, the base and the receiving tray are both arranged directly below the open mill assembly, one of the corners of the receiving tray is a foot-operated portion, a bracket is provided on the bottom surface of the receiving tray near the foot-operated portion, and the bracket is rotatably connected to the base along an axis direction parallel to the diagonal of the receiving tray;

[0013] A first groove is provided on the top surface of the base, and two ends of the first spring are respectively fixed on the bottom wall of the first groove and the diagonal end of the bottom surface of the receiving tray away from the foot-operated portion. The first spring is always in a stretched state, and an avoidance groove is provided on the top surface of the base for the receiving tray to swing. When there is no external force, the receiving tray is always horizontally abutted against the top surface of the base.

[0014] By adopting the above technical solution, since the vulcanizer, accelerator and cross-linking agent added in the open milling process are mostly granular and powdered raw materials, the granular or powdered raw materials cannot be integrated into the rubber material to form a gel at one time, and the remaining ungelled raw materials will fall into the receiving tray below the open mill, and the operator needs to use a brush to gather these raw materials together, and then put them back between the front roller and the rear roller for refining. However, when the open mill is running, it is inconvenient for the operator to operate under the front roller and the rear roller to collect the raw materials in the receiving tray, and it is easy to touch the rollers and the glue on the rollers and get burned;

[0015] Therefore, the operator can step on the foot part to make the receiving tray continuously tilt and vibrate, so that the powder or granular raw materials in the receiving tray can be gathered on the foot part. The operator only needs to stand on a corner of the receiving tray to take the collected raw materials, which can facilitate the operator to put the raw materials in the receiving tray back between the front roller and the rear roller for refining.

[0016] Preferably, the mixing mill further includes a limiting assembly, which includes a second driving assembly and two limiting plates, wherein the second driving assembly is arranged on the frame, and the second driving assembly is used to drive the two limiting plates to move relative to each other along the axial direction of the front roller, and the limiting plates abut against the surfaces of the front roller and the rear roller.

[0017] By adopting the above technical solution and setting the limit plates, the rubber raw materials on the surfaces of the front roller and the rear roller can be scooped up, and the scooped rubber is moved to the position between the two limit plates under the push of the moving plate.

[0018] Preferably, the open mixing mill also includes a material transport component for transporting the raw materials collected on the receiving tray to the space between the front roller and the rear roller for refining. The material transport component includes a power source, a pump head, a receiving hopper, a nozzle, a first connecting pipe and a second connecting pipe. A material discharge hole is formed through the receiving tray near the foot-operated portion. The receiving hopper is fixedly arranged on the base and is located directly below the material discharge hole for receiving the raw materials dropped from the material discharge hole. The pump head is fixedly arranged on the frame. The power source is used to drive the pump head to operate. The two ends of the first connecting pipe are respectively connected to the inlet of the pump head and the receiving hopper, and the two ends of the second connecting pipe are respectively connected to the outlet of the pump head and the nozzle. The nozzle is arranged on one of the limit plates. The nozzle is always arranged at an angle and faces the feeding point between the front roller and the rear roller.

[0019] By adopting the above technical solution, the operator shakes the receiving tray by stepping on it, so that the scattered raw materials in the receiving tray are gathered and enter the receiving hopper from the discharge hole, and then starts the pump head to pump this part of the raw materials out of the nozzle, and the pumped raw materials will fall back to the feeding place of the mixing mill.

[0020] Preferably, the pump head has a drive shaft, and the power source includes an accelerator, a transmission belt, a pull rope, a first bevel gear, a second bevel gear, a first shaft, a second shaft, a second spring, a rotating ring and a plurality of pulleys;

[0021] The first shaft is coaxially fixedly connected to the front roller or the rear roller, the second shaft is rotatably connected to the frame along an axial direction parallel to the first shaft, the transmission belt is wound on the first shaft and the second shaft, and the first bevel gear is coaxially fixedly connected to the second shaft;

[0022] The accelerator is fixedly arranged on the frame, the input shaft of the accelerator is coaxially fixedly arranged on the driving shaft of the pump body, the second bevel gear is slidably connected to the output shaft of the accelerator along the axial direction of the output shaft of the accelerator, the rotating ring is coaxially rotatably connected to the end of the second bevel gear away from the first bevel gear, the two ends of the second spring are respectively fixedly connected to the rotating ring and the outer shell of the accelerator, the second bevel gear is located below the first bevel gear, and the second spring drives the rotating ring to move toward the side away from the first bevel gear;

[0023] Several pulleys are rotatably connected to the base and the frame respectively, one end of the pull rope is fixed on the diagonal end of the bottom surface of the receiving tray away from the foot-operated part, the other end of the pull rope first passes through the first spring, then passes through several pulleys, and finally is fixed downward on the swivel; when the foot-operated part rotates downward to a preset angle, the first bevel gear is meshed and connected to the second bevel gear.

[0024] By adopting the above technical solution, the powder or granular raw materials scattered in the receiving tray are gathered on the foot pedal by stepping on the foot pedal, and then force is applied to the foot pedal to rotate it downward to a preset angle. At this time, the receiving tray overcomes the force of the second spring by rotating the swivel through the pull rope, so that the first bevel gear is meshed and connected to the second bevel gear. The rotation of the front roller or the rear roller, after being accelerated by the accelerator, drives the driving rod of the pump head to rotate, so that the pump head can start to run, absorb the raw materials received in the receiving hopper, and pump it out from the nozzle.

[0025] Preferably, it also includes a third driving component, a rotating rod is provided on the nozzle, and a movable groove for the movement of the nozzle is opened on the corresponding limiting plate, the rotating rod is connected in the movable groove and rotates in a horizontal direction perpendicular to the rotation axis of the front roller, and the third driving component is used to drive the nozzle to rotate so that the nozzle is always facing the middle position of the feeding point between the front roller and the rear roller.

[0026] By adopting the above technical scheme, since the colloid after the start of refining will basically all be concentrated in the middle position of the length direction of the feeding point, the sprayed raw materials can be made to enter the middle position of the feeding point by adjusting the rotation angle of the nozzle, so that they can be better covered by the colloid, which can reduce the probability of the raw materials falling again from the gap between the front roller and the rear roller, thereby improving the start of refining efficiency.

[0027] Preferably, the driving member three includes an elastic rope and a counterweight block, the counterweight block is installed at the top of the nozzle, and the two ends of the elastic rope are respectively fixed on the bottom of the nozzle and on a side frame of the nozzle away from the middle position of the feeding place. When the limit plate moves toward the side of the middle position of the feeding place, the nozzle gradually rotates downward.

[0028] By adopting the above technical solution, when the limit plate moves toward the middle position of the feeding place, the elastic rope is gradually stretched, and the elastic force of the elastic rope becomes greater, which will pull the lower end of the nozzle to rotate downward, thereby changing the spraying angle of the nozzle, so that the nozzle can always face the middle position of the feeding place.

[0029] Preferably, the movable groove is located on the top of the limiting plate.

[0030] By adopting the above technical solution, the colloid between the two limit plates will contact the limit plates. Setting the nozzle on the top of the limit plate can reduce the probability of direct contact between the nozzle and the colloid, and reduce the impact of the colloid on the nozzle.

[0031] The technical effects of the present invention are mainly reflected in the following aspects:

[0032] 1. The present invention adopts butyl rubber with a specific unsaturation (unsaturation range is 1.5% to 1.9%), high wear-resistant furnace black HAF, and adjusts the plasticizer and vulcanizer to the most appropriate ratio to achieve an ideal damping coefficient (at room temperature of 25 degrees Celsius, the loss factor Tan (δ) is about 0.25) and ideal elasticity;

[0033] 2. The operator of the present invention steps on the foot-operated part to continuously tilt and vibrate the receiving tray, so that the powder or granular raw materials in the receiving tray can be gathered on the foot-operated part. The operator only needs to stand on a corner of the receiving tray to take the collected raw materials, which can facilitate the operator to put the raw materials in the receiving tray back between the front roller and the rear roller for refining;

[0034] 3. The operator of the present invention shakes the receiving tray by stepping on it, so that the scattered raw materials in the receiving tray are gathered and enter the receiving hopper from the discharge hole, and then starts the pump head to pump this part of the raw materials out of the nozzle, and the pumped raw materials will fall back to the feeding place of the mixing mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a production process flow chart of the high damping coefficient IIR shock-absorbing rubber foot material of the embodiment of the present application.

[0036] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0037] Figure 3 It is a schematic diagram of the structure of the receiving tray and the base of the embodiment of the present application.

[0038] Figure 4 yes Figure 3 Section view along line AA.

[0039] Figure 5 It is a partial structural schematic diagram of the refining component and the material transport component of the embodiment of the present application.

[0040] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0041] Figure 7 It is a schematic diagram of the partial structure of the material transport component of the embodiment of the present application.

[0042] Figure 8 is along Figure 5 Partial cross-sectional view along the CC line.

[0043] Fig. 9 It is a schematic diagram of the structure of the nozzle and the rotating rod.

[0044] Description of reference numerals: 1, frame; 2, refining assembly; 21, first driving assembly; 22, front roller; 23, rear roller; 31, base; 311, first slot; 312, avoidance slot; 32, receiving tray; 321, foot pedal; 322, bracket; 323, feeding hole; 33, first spring; 4, limit assembly; 41, electric cylinder; 42, limit plate; 421, movable slot; 5, material transport assembly; 51, pump head; 52, Hopper; 53, nozzle; 531, rotating rod; 54, first connecting pipe; 55, second connecting pipe; 6, power source; 61, accelerator; 62, transmission belt; 63, pull rope; 64, first bevel gear; 65, second bevel gear; 66, first shaft; 67, second shaft; 68, second spring; 69, swivel; 60, pulley; 7, driving member three; 71, elastic rope; 72, counterweight; 8, cover body; 81, exhaust pipe. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-9 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0046] The embodiment of the present application discloses a production process of a high damping coefficient IIR shock-absorbing rubber foot material.

[0047] Reference Figure 1 The production process of a high damping coefficient IIR shock-absorbing rubber foot material of this embodiment includes the following steps:

[0048] S1, ingredients: weigh various raw materials according to the formula, and store them in different designated containers, including 10 parts of butyl rubber with an unsaturation range of 1.5% to 1.9%; 4.5 parts of carbon black N330; 4.8 parts of paraffin oil; 0.15 parts of paraffin; 0.1 parts of zinc stearate; 0.1 parts of stearic acid; 0.5 parts of zinc oxide; 0.1 parts of vulcanizing agent;

[0049] S2, mixing: add butyl rubber raw rubber into the mixer and mix for 2 minutes, then add carbon black, antioxidant and plasticizer for mixing. The mixing time is 12 minutes and the mixing temperature does not exceed 150°C.

[0050] S3, open refining: add vulcanizing agent, accelerator and cross-linking agent to the mixed rubber in an open refining mill, with the roller temperature at 40-50°C and the roller distance at 2-3mm, and pass through the mixture 3 times in the form of a triangular package for 8 minutes, and then produce a sheet;

[0051] S4, post-processing: place the rubber in a ventilated place at room temperature for 3 hours before testing and storage.

[0052] It uses butyl rubber with a specific degree of unsaturation (unsaturation range is 1.5% to 1.9%), high wear-resistant furnace black HAF, and is adjusted to the most appropriate ratio with plasticizer and vulcanizer to achieve the ideal damping coefficient (at room temperature of 25 degrees Celsius, the loss factor Tan (δ) is around 0.25) and ideal elasticity.

[0053] Reference Figure 2-Figure 4 The open mill includes a frame 1, an open mill assembly 2, a base 31, a receiving tray 32 and a first spring 33. The open mill assembly 2 includes a first driving assembly 21 arranged on the frame 1 and a front roller 22 and a rear roller 23 rotatably connected to the frame 1. Electric heating wires are arranged in the front roller 22 and the rear roller 23. The first driving assembly 21 is used to drive the front roller 22 and the rear roller 23 to rotate in opposite directions at different speeds. The base 31 and the receiving tray 32 are both arranged directly below the open mill assembly 2. One of the corners of the receiving tray 32 is a foot-operated portion 321. A bracket 322 is provided on the bottom surface of the receiving tray 32 near the foot-operated portion 321. The bracket 322 is rotatably connected to the base 31 along an axial direction parallel to the diagonal of the receiving tray 32.

[0054] Reference Figure 2-Figure 4 A first groove 311 is provided on the top surface of the base 31, and two ends of the first spring 33 are respectively fixed on the bottom wall of the first groove 311 and the diagonal end of the bottom surface of the receiving tray 32 away from the foot-operated portion 321. The first spring 33 is always in a stretched state, and an avoidance groove 312 is provided on the top surface of the base 31 for the receiving tray 32 to swing. When there is no external force, the receiving tray 32 is always horizontally abutted against the top surface of the base 31.

[0055] Reference Figure 2-Figure 4 Since the vulcanizer, accelerator and cross-linking agent added in the mixing process are mostly granular or powdered raw materials, the granular or powdered raw materials cannot be integrated into the rubber material to form a gel at one time, and the remaining ungelled raw materials will fall into the receiving tray 32 under the mixing mill. The operator needs to use a brush to gather these raw materials together and then put them back between the front roller 22 and the rear roller 23 for mixing. However, when the mixing mill is running, it is inconvenient for the operator to operate under the front roller 22 and the rear roller 23 to collect the raw materials in the receiving tray 32, and it is easy to touch the rollers and the glue on the rollers and get burned;

[0056] Therefore, the operator can step on the foot-operated portion 321 to continuously tilt and vibrate the receiving tray 32, so that the powder or granular raw materials in the receiving tray 32 can be gathered on the foot-operated portion 321. The operator only needs to stand on a corner of the receiving tray 32 to take the collected raw materials, which can facilitate the operator to put the raw materials in the receiving tray 32 back between the front roller 22 and the rear roller 23 for refining.

[0057] Reference Figure 2 and Figure 3 In the initial rubber mixing process, pieces of rubber may fall into the receiving tray 32 , and the pieces of rubber can be directly picked up by hand without stepping on the foot-operated part 321 to collect them.

[0058] Reference Figure 2 The first driving assembly 21 can be two low-speed motors, which are fixed on the frame 1, and the output shafts of the two low-speed motors are coaxially fixedly connected to the front roller 22 and the rear roller 23. The low-speed motor can be a worm gear micro DC reduction motor or a brushless motor.

[0059] Reference Figure 2 and Figure 5 The mixing mill also includes a limit assembly 4, which includes a second drive assembly and two limit plates 42. The second drive assembly is arranged on the frame 1, and the second drive assembly is used to drive the two limit plates 42 to move relative to each other along the axial direction of the front roller 22. The limit plates 42 abut against the surfaces of the front roller 22 and the rear roller 23.

[0060] Reference Figure 2 and Figure 5 By setting the limiting plate 42 , the rubber material on the surface of the front roller 22 and the rear roller 23 can be scooped up, and the scooped rubber is moved to the position between the two limiting plates 42 under the push of the moving plate.

[0061] Reference Figure 2 and Figure 5 The second driving assembly is two electric cylinders 41 , which are respectively fixedly arranged on both sides of the frame 1 , and piston rods of the two electric cylinders 41 are respectively fixedly connected to two limit plates 42 .

[0062] Reference Figure 5-Figure 7 The open mill also includes a material transport component 5 for transporting the raw materials collected by the receiving tray 32 to the space between the front roller 22 and the rear roller 23 for refining. The material transport component 5 includes a power source 6, a pump head 51, a receiving hopper 52, a nozzle 53, a first connecting pipe 54 and a second connecting pipe 55. The receiving tray 32 is provided with a discharge hole 323 near the foot-operated portion 321. The receiving hopper 52 is fixedly arranged on the base 31 and is located directly below the discharge hole 323, and is used to receive the raw materials falling from the discharge hole 323. The pump head 51 is fixedly arranged on the frame 1, and the power source 6 is used to drive the pump head 51 to operate. The two ends of the first connecting pipe 54 are respectively connected to the inlet of the pump head 51 and the receiving hopper 52, and the two ends of the second connecting pipe 55 are respectively connected to the outlet of the pump head 51 and the nozzle 53. The nozzle 53 is arranged on one of the limit plates 42, and the nozzle 53 is always inclined and faces the feeding point between the front roller 22 and the rear roller 23.

[0063] Reference Figure 5-Figure 7The operator shakes the receiving tray 32 by stepping on it, so that the scattered raw materials in the receiving tray 32 are gathered and enter the receiving hopper 52 from the discharge hole 323, and then starts the pump head 51 to pump this part of the raw materials out from the nozzle 53, and the pumped raw materials will fall back to the feeding place of the mixing mill.

[0064] Reference Figure 5-Figure 7 The pump head 51 is a device with the motor removed from the pump body. The pump head 51 has a driving shaft. The power source 6 includes an accelerator 61, a transmission belt 62, a pull rope 63, a first bevel gear 64, a second bevel gear 65, a first shaft 66, a second shaft 67, a second spring 68, a swivel 69 and a plurality of pulleys 60.

[0065] Reference Figure 5-Figure 7 The first shaft 66 is coaxially fixedly connected to the front roller 22 or the rear roller 23, the second shaft 67 is rotatably connected to the frame 1 along an axial direction parallel to the first shaft 66, the transmission belt 62 is wound around the first shaft 66 and the second shaft 67, and the first bevel gear 64 is coaxially fixedly connected to the second shaft 67.

[0066] Reference Figure 5-Figure 7 The accelerator 61 is fixed on the frame 1, the input shaft of the accelerator 61 is coaxially fixed on the driving shaft of the pump body, the second bevel gear 65 is slidably connected to the output shaft of the accelerator 61 along the axial direction of the output shaft of the accelerator 61, the swivel 69 is coaxially rotatably connected to the end of the second bevel gear 65 away from the first bevel gear 64, the two ends of the second spring 68 are respectively fixedly connected to the swivel 69 and the outer shell of the accelerator 61, the second bevel gear 65 is located below the first bevel gear 64, and the second spring 68 drives the swivel 69 to move toward the side away from the first bevel gear 64.

[0067] Reference Figure 5-Figure 7 , several pulleys 60 are rotatably connected to the base 31 and the frame 1 respectively, one end of the pull rope 63 is fixed to the diagonal end of the bottom surface of the receiving tray 32 away from the foot-operated portion 321, and the other end of the pull rope 63 first passes through the first spring 33, then passes through several pulleys 60, and finally is fixed downward on the swivel 69. When the foot-operated portion 321 rotates downward to a preset angle, the first bevel gear 64 is meshed and connected to the second bevel gear 65.

[0068] Reference Figure 5-Figure 7By stepping on the foot-operated part 321, the powder or granular raw materials scattered in the receiving tray 32 are gathered on the foot-operated part 321, and then force is applied to the foot-operated part 321 to rotate it downward to a preset angle. At this time, the receiving tray 32 rotates the swivel 69 through the pull rope 63 to overcome the force of the second spring 68 and moves upward, so that the first bevel gear 64 is meshed and connected to the second bevel gear 65. The rotation of the front roller 22 or the rear roller 23, after being accelerated by the accelerator 61, drives the driving rod of the pump head 51 to rotate, so that the pump head 51 can start to run, absorb the raw materials received in the receiving hopper 52, and pump it out from the nozzle 53.

[0069] Reference Figure 5 , Figure 8 and Fig. 9 , and also includes a driving member three 7. A rotating rod 531 is fixedly arranged on the outer wall of the nozzle 53. A movable groove 421 for the nozzle 53 to move is opened on the corresponding limiting plate 42. The rotating rod 531 is rotatably connected in the movable groove 421 along a horizontal direction perpendicular to the rotation axis of the front roller 22. The driving member three 7 is used to drive the nozzle 53 to rotate so that the nozzle 53 is always facing the middle position of the feeding point between the front roller 22 and the rear roller 23.

[0070] Reference Figure 5 , Figure 8 and Fig. 9 Since the colloid after the opening of the mill is basically concentrated in the middle position of the length direction of the feeding place, by adjusting the rotation angle of the nozzle 53, the sprayed raw material can enter the middle position of the feeding place, so that it can be better covered by the colloid, which can reduce the probability of the raw material falling again from the gap between the front roller 22 and the rear roller 23, thereby improving the opening of the mill efficiency.

[0071] References Figure 5 , Figure 8 and Fig. 9 The driving member 3 7 includes an elastic rope 71 and a counterweight block 72. The counterweight block 72 is threadedly connected to the top of the nozzle 53. The two ends of the elastic rope 71 are respectively fixedly arranged on the bottom end of the nozzle 53 and on the side frame 1 of the nozzle 53 away from the middle position of the feeding place. When the limit plate 42 moves toward the middle position of the feeding place, the nozzle 53 gradually rotates downward.

[0072] Reference Figure 5 , Figure 8 and Fig. 9 When the limit plate 42 moves toward the middle position of the feeding place, the elastic rope 71 is gradually stretched, and the elastic force of the elastic rope 71 becomes larger, which will pull the lower end of the nozzle 53 to rotate downward, thereby changing the spraying angle of the nozzle 53, so that the nozzle 53 can always face the middle position of the feeding place.

[0073] Reference Figure 5 and Figure 8The movable groove 421 is located at the top of the limit plate 42. The colloid between the two limit plates 42 will contact the limit plates 42. Placing the nozzle 53 at the top of the limit plate 42 can reduce the probability of direct contact between the nozzle 53 and the colloid, and reduce the impact of the colloid on the nozzle 53.

[0074] Reference Figure 2 A cover 8 is installed at the top of the machine body, and the cover 8 is located directly above the open refining assembly 2. The top of the cover 8 is connected to an exhaust pipe 81, and the end of the exhaust pipe 81 away from the cover 8 is connected to an exhaust machine. The exhaust gas generated during the open refining process can be absorbed to reduce the harm to the operator.

[0075] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A production process of a high damping coefficient IIR shock-absorbing rubber foot material, comprising the following steps: S1, ingredients: weigh various raw materials according to the formula, and store them in different designated containers, including 10 parts of butyl rubber with an unsaturation range of 1.5% to 1.9%; 4.5 parts of carbon black N330; 4.8 parts of paraffin oil; 0.15 parts of paraffin; 0.1 parts of zinc stearate; 0.1 parts of stearic acid; 0.5 parts of zinc oxide; 0.1 part of vulcanizing agent; S2, mixing: add butyl rubber raw rubber into the mixer and mix for 2 minutes, then add carbon black, antioxidant and plasticizer for mixing. The mixing time is 12 minutes and the mixing temperature does not exceed 150°C. S3, open refining: add vulcanizing agent, accelerator and cross-linking agent to the mixed rubber in an open refining mill, roll temperature 40-50°C, roll distance 2-3mm, pass through in the form of triangular package 3 times, take 8 minutes, and then produce sheets; S4, post-processing: the rubber is placed in a ventilated place at room temperature for 3 hours, then tested and put into storage; The open mill comprises a frame (1) and an open mill assembly (2), wherein the open mill assembly (2) comprises a first driving assembly (21) arranged on the frame (1) and a front roller (22) and a rear roller (23) rotatably connected to the frame (1), wherein the first driving assembly (21) is used to drive the front roller (22) and the rear roller (23) to rotate in opposite directions at different speeds; and further comprises a base (31), a receiving plate (32) and a first spring (33), wherein the base (31) and the receiving plate (32) are both arranged directly below the open mill assembly (2), wherein one of the corners of the receiving plate (32) is a foot-operated portion (321), and a bracket (322) is provided on the bottom surface of the receiving plate (32) near the foot-operated portion (321), and the bracket (322) is rotatably connected to the base (31) along an axis parallel to the diagonal of the receiving plate (32); A first groove (311) is provided on the top surface of the base (31), and two ends of the first spring (33) are respectively fixed on the bottom wall of the first groove (311) and the diagonal end of the bottom surface of the receiving tray (32) away from the foot-operated portion (321), the first spring (33) is always in a stretched state, and an avoidance groove (312) for the receiving tray (32) to swing is provided on the top surface of the base (31), and when no external force is applied, the receiving tray (32) is always horizontally abutted against the top surface of the base (31); The mixing mill further comprises a limiting assembly (4), wherein the limiting assembly (4) comprises a second driving assembly and two limiting plates (42), wherein the second driving assembly is arranged on the frame (1), and the second driving assembly is used to drive the two limiting plates (42) to move relative to each other along the axis direction of the front roller (22), and the limiting plates (42) abut against the surfaces of the front roller (22) and the rear roller (23); The open mill also includes a material transport component (5) for transporting the raw materials collected by the receiving plate (32) to the space between the front roller (22) and the rear roller (23) for refining. The material transport component (5) includes a power source (6), a pump head (51), a receiving hopper (52), a nozzle (53), a first connecting pipe (54) and a second connecting pipe (55). A material discharge hole (323) is provided through the receiving plate (32) near the foot-operated portion (321). The receiving hopper (52) is fixedly arranged on the base (31) and is located directly below the material discharge hole (323) for receiving the raw materials. The raw materials falling from the material hole (323), the pump head (51) is fixedly arranged on the frame (1), the power source (6) is used to drive the pump head (51) to operate, the two ends of the first connecting pipe (54) are respectively connected to the inlet of the pump head (51) and the material receiving hopper (52), the two ends of the second connecting pipe (55) are respectively connected to the outlet of the pump head (51) and the nozzle (53), the nozzle (53) is arranged on one of the limit plates (42), and the nozzle (53) is always arranged at an angle and faces the feeding position between the front roller (22) and the rear roller (23); The pump head (51) has a driving shaft, and the power source (6) includes an accelerator (61), a transmission belt (62), a pull rope (63), a first bevel gear (64), a second bevel gear (65), a first shaft (66), a second shaft (67), a second spring (68), a rotating ring (69) and a plurality of pulleys (60); The first shaft (66) is coaxially fixedly connected to the front roller (22) or the rear roller (23); the second shaft (67) is rotatably connected to the frame (1) along an axial direction parallel to the first shaft (66); the transmission belt (62) is wound around the first shaft (66) and the second shaft (67); and the first bevel gear (64) is coaxially fixedly connected to the second shaft (67); The accelerator (61) is fixedly arranged on the frame (1); the input shaft of the accelerator (61) is coaxially fixedly arranged on the driving shaft of the pump body; the second bevel gear (65) is slidably connected to the output shaft of the accelerator (61) along the axial direction of the output shaft of the accelerator (61); the rotating ring (69) is coaxially rotatably connected to an end of the second bevel gear (65) away from the first bevel gear (64); the two ends of the second spring (68) are respectively fixedly connected to the rotating ring (69) and the outer shell of the accelerator (61); the second bevel gear (65) is located below the first bevel gear (64); and the second spring (68) drives the rotating ring (69) to move toward a side away from the first bevel gear (64); A plurality of pulleys (60) are rotatably connected to the base (31) and the frame (1), one end of the pull rope (63) is fixed to the diagonal end of the bottom surface of the receiving tray (32) away from the foot-operated portion (321), the other end of the pull rope (63) first passes through the first spring (33), then passes through the plurality of pulleys (60), and finally is fixed downward on the rotating ring (69), when the foot-operated portion (321) rotates downward to a preset angle, the first bevel gear (64) is meshed and connected to the second bevel gear (65); It also includes a third driving member (7), wherein a rotating rod (531) is provided on the nozzle (53), and a movable groove (421) for the nozzle (53) to move is opened on the corresponding limiting plate (42), and the rotating rod (531) is connected to the movable groove (421) to rotate in a direction perpendicular to the rotation axis of the front roller (22), and the third driving member (7) is used to drive the nozzle (53) to rotate so that the nozzle (53) is always facing the middle position of the feeding point between the front roller (22) and the rear roller (23); The driving member three (7) comprises an elastic rope (71) and a counterweight (72), wherein the counterweight (72) is mounted on the top of the nozzle (53), and the two ends of the elastic rope (71) are respectively fixedly arranged on the bottom of the nozzle (53) and on a side frame (1) of the nozzle (53) away from the middle position of the feeding place, and when the limit plate (42) moves toward the side of the middle position of the feeding place, the nozzle (53) gradually rotates downward.

2. The production process of a high damping coefficient IIR shock-absorbing rubber foot material according to claim 1, characterized in that: The movable groove (421) is located on the top of the limiting plate (42).

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