Synthetic polyisoprene gasket processing technology and preparation system thereof

Abstract

The invention discloses a synthetic polyisoprene gasket processing technology and a preparation system thereof.The synthetic polyisoprene gasket processing technology comprises the following steps that S1, polyisoprene rubber is prepared as a base material, then a vulcanizing agent, an accelerant, a filling agent, an anti-aging agent and a coloring agent are prepared, and quality inspection is conducted; and S2, uniformly mixing the polyisoprene rubber and various additives in an internal mixer or an open mill according to a ratio. According to the synthetic polyisoprene gasket processing technology and the preparation system thereof provided by the invention, the lower thread sleeve is in threaded connection with the upper thread and the lower thread in sequence, so that the immersion frame rotates and moves downwards to disperse the stacked gaskets, and then the telescopic rod drives the frame bottom to deflect downwards, so that the bottom of the immersion frame presents an inverted-table-shaped accommodating cavity to increase the diffusion area; and by matching with the spirally downward-moving soaking frame, the silicone oil is driven to be upwards poured into the inverted-table-shaped containing cavity to be impacted to generate suspension, the contact area of the gaskets and the silicone oil is guaranteed, and the problem that the coating uniformity is affected due to mutual attachment of the gaskets is greatly solved.

Description

Technical Field

[0001] The invention relates to the technical field of medical rubber preparation, in particular to a synthetic polyisoprene gasket processing technology and a preparation system thereof. Background Art

[0002] Synthetic polyisoprene gaskets are mainly found in medical infusion systems and are used as inner pads for polypropylene composite covers of plastic infusion containers. They are usually made of isoprene rubber and have the functions of sealing and clamping puncture needles in clinical use.

[0003] According to the publication (announcement) number: CN109251377A, the publication (announcement) date: 2019-01-22, a low-puncture and chip-shedding polyisoprene gasket and a preparation method thereof.

[0004] In the prior art including the above-mentioned patents, polyisoprene gaskets often need to withstand the puncture operation of the infusion needle, and in the process, puncture debris is prone to enter the drug solution and leakage at the puncture site, affecting the delivery of the drug solution, and even causing the debris to enter the human body with the drug solution and endanger the blood vessels. Siliconized gaskets are used on the market to cover the surface of the gasket with medical-grade dimethyl silicone oil. Since silicone oil is a biologically inert material, it is non-toxic and harmless to the human body and can reduce adverse reactions between gaskets and human tissues. However, when the gaskets are treated by dipping, the gaskets deposited on the load-bearing grid are in contact with each other. Even if they are manually turned over before dipping, the gaskets will fit together during the immersion period, and the silicone oil coverage cannot be guaranteed to be uniform, resulting in the incomplete gaskets wrapped in silicone oil failing to meet the requirements of puncture sealing and anti-debris. Summary of the invention

[0005] The purpose of the present invention is to provide a synthetic polyisoprene gasket processing technology and a preparation system thereof, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A synthetic polyisoprene gasket processing technology comprises the following steps:

[0008] S1. Prepare polyisoprene rubber as a base material, and then prepare a vulcanizing agent, an accelerator, a filler, an antioxidant, a colorant, and perform a quality inspection;

[0009] S2, mixing the polyisoprene rubber and various additives in proportion in an internal mixer or an open mixer to form a rubber compound, and then fully dispersing and mixing the rubber compound through mechanical shearing and extrusion;

[0010] S3, pressing the mixed rubber material into a sheet or tubular semi-finished product through a calender or extruder, and then putting the semi-finished product into a vulcanization mold, and vulcanizing it under high temperature and high pressure to make the rubber molecules undergo cross-linking reaction to form a finished product with certain strength and elasticity;

[0011] S4, taking the vulcanized gasket out of the mold and performing punching processing to obtain a gasket that meets the size requirements;

[0012] S5, extracting the gasket with an alkaline aqueous solution to remove soluble impurities, followed by acid neutralization and multiple washings;

[0013] S6, then put the gasket into the immersion frame, and use the hydraulic rod to pull the immersion frame axially and spirally move it in the oil pool filled with silicone oil, so that the gasket in the immersion frame is impacted by the silicone oil and evenly coated, so that the gasket with a layer of silicone oil on the surface can improve the self-lubricating and sealing properties of the gasket;

[0014] S7, then drying the siliconized gasket to remove moisture and residual solvent;

[0015] S8. Finally, the finished gaskets are inspected for quality to ensure they meet the requirements.

[0016] A synthetic polyisoprene gasket preparation system includes the above-mentioned synthetic polyisoprene gasket processing technology, wherein the upper port of the impregnation frame is fixedly installed with a frame that rotates on the output end of the hydraulic rod, and the upper screw sleeve is fixedly installed on the frame;

[0017] It also includes a plurality of telescopic rods and a frame bottom hingedly arranged at the lower port of the immersion frame, and the ends of the plurality of telescopic rods are provided with an annular lower screw sleeve;

[0018] A plug barrel is fixedly installed in the oil pool, a screw frame is arranged on the plug barrel, an upper thread and a lower thread connected to each other are opened on the screw frame, and the upper thread, the lower thread, the lower screw sleeve and the upper screw sleeve are used for the following two-station movable assembly:

[0019] In the first station, the lower screw sleeve is coupled with the upper thread, so that the immersion frame is driven to move downward by the screw, and the angle between the frame bottom and the side wall of the immersion frame is a right angle;

[0020] In the second workstation, the lower screw sleeve is coupled with the lower thread and the upper screw sleeve is coupled with the upper thread, so that the lower screw sleeve moves away from the upper screw sleeve, and the angle between the frame bottom and the side wall of the immersion frame is an obtuse angle.

[0021] Preferably, the frame bottom is rotatably arranged between adjacent telescopic rods, and an elastic strip located outside the telescopic rod is fixedly installed between every two frame bottoms;

[0022] The oil pool port is provided with a pool opening, and a plurality of drain plates are hingedly arranged in the pool opening. A cover edge is provided on the frame bottom. The cover edge which moves downward in a spiral contacts the drain plate for braking, so that the frame bottom and the telescopic rod are staggered and movable, and the elastic strip is squeezed and deformed by the telescopic rod.

[0023] Preferably, an outer cover is fixedly mounted on the frame bottom, and the movable frame bottom is staggered so that the end of the outer cover extends into the upper port of the immersion frame.

[0024] Preferably, a plurality of notches are formed at the end of the plug barrel, and a plug plate is fixedly mounted at the output end of the hydraulic rod, and the plug plate slides in the plug barrel to squeeze out the oil in the notches.

[0025] Preferably, a barrel head is fixedly mounted on the plug barrel, and a hole communicating with the frame bottom is formed on the barrel head.

[0026] Preferably, the lower screw sleeves are opened to each other and decouple the lower threads, so that the frame bottom is reset and the lower screw sleeves are coupled to the upper threads again.

[0027] Preferably, an inclined strip is fixedly installed in the hole of the barrel head, and a protrusion located in the screw frame is arranged on the inclined strip;

[0028] The plug plate is fixedly mounted with plug pieces arranged in a circle, and the hydraulic rod under resetting causes the plug pieces to push the inclined strips to move and causes the protrusions to extend out of the screw frame.

[0029] Preferably, a protrusion is fixedly mounted on the telescopic rod, and the telescopic rod under coupling / decoupling causes the protrusion to reciprocate against the elastic strip to slide.

[0030] Preferably, the upper port of the immersion frame is provided with a notch connected to the outer cover, and the frame bottom under decoupling enables the outer cover to open the notch and enables the cover edge to cooperate with the leaching rack plate.

[0031] In the above technical scheme, a synthetic polyisoprene gasket processing technology and a preparation system thereof provided by the present invention have the following beneficial effects: the immersion frame is pushed downward by a hydraulic rod, so that the lower screw sleeve is first threadedly connected to the upper thread, and the immersion frame is rotated and moved downward, the purpose is to disperse the gaskets accumulated in the immersion frame and increase the contact area between the gasket and the silicone oil. When the lower screw sleeve is threadedly connected to the lower thread and the upper screw sleeve is threadedly connected to the upper thread, under the same number of turns, the lower screw sleeve needs to move a longer distance, so that the lower screw sleeve moving downward away from the upper screw sleeve pulls the telescopic rod to deform, and drives the bottom of the frame to deflect downward, so that the bottom of the immersion frame presents an inverted cavity, so that the gasket has a larger diffusion area, and with the spirally moving downward immersion frame, the silicone oil is passively poured into the inverted cavity, so that the oil impacts the gasket and produces suspension, thereby ensuring the contact area between the gasket and the silicone oil, greatly reducing the problem of gaskets fitting each other and affecting the coating uniformity, and improving the puncture sealing and anti-chipping requirements of the gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0033] Figure 1 Schematic diagram of the silicone oil pool, hydraulic rod and immersion frame provided in an embodiment of the present invention;

[0034] Figure 2 A front cross-sectional schematic diagram of a silicone oil pool, a hydraulic rod, and an immersion frame provided in an embodiment of the present invention;

[0035] Figure 3 for Figure 2 A magnified schematic diagram of point A;

[0036] Figure 4 A schematic diagram of a silicone oil pool and a hydraulic rod, an immersion frame, and a plug cylinder provided in an embodiment of the present invention, viewed from the right side of the front section;

[0037] Figure 5 A schematic diagram of an explosion of a hydraulic rod, an immersion frame and a plug cylinder provided in an embodiment of the present invention;

[0038] Figure 6 A schematic cross-sectional diagram of the assembly of the frame bottom and the telescopic rod at the rotation position provided by an embodiment of the present invention;

[0039] Figure 7 A schematic diagram of a hydraulic rod, an immersion frame, and a plug cylinder provided in an embodiment of the present invention, viewed from the right side in front section;

[0040] Figure 8 for Figure 7 An enlarged schematic diagram of point B;

[0041] Fig. 9 This is a schematic diagram of the partial structure of the frame bottom and the telescopic rod side section provided by an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1. Oil pool; 11. Pool mouth; 12. Drainage rack; 2. Hydraulic rod; 21. Plug plate; 22. Plug piece; 3. Immersion frame; 31. Frame; 32. Frame edge; 33. Upper screw sleeve; 34. Frame bottom; 341. Inner cover; 342. Outer cover; 343. Cover edge; 35. Elastic strip; 36. Telescopic rod; 361. Protrusion; 37. Lower screw sleeve; 4. Plug barrel; 41. Barrel head; 411. Screw frame; 412. Upper thread; 413. Lower thread; 42. Oblique strip; 421. Vertical strip; 422. Bump. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] Embodiment 1

[0046] A synthetic polyisoprene gasket processing technology comprises the following steps:

[0047] S1. Prepare polyisoprene rubber as a base material, and then prepare a vulcanizing agent, an accelerator, a filler, an antioxidant, a colorant, and perform a quality inspection;

[0048] S2, mixing the polyisoprene rubber and various additives in proportion in an internal mixer or an open mixer to form a rubber compound, and then fully dispersing and mixing the rubber compound through mechanical shearing and extrusion;

[0049] S3, pressing the mixed rubber material into a sheet or tubular semi-finished product through a calender or extruder, and then putting the semi-finished product into a vulcanization mold, and vulcanizing it under high temperature and high pressure to make the rubber molecules undergo cross-linking reaction to form a finished product with certain strength and elasticity;

[0050] S4, taking the vulcanized gasket out of the mold and performing punching processing to obtain a gasket that meets the size requirements;

[0051] S5, extracting the gasket with an alkaline aqueous solution to remove soluble impurities, followed by acid neutralization and multiple washings;

[0052] S6, then put the gasket into the immersion frame 3, push the immersion frame 3 downward by the hydraulic rod 2, make the lower screw sleeve 37 first threadedly connected to the upper thread 412, and make the immersion frame 3 rotate and move downward, the purpose is to disperse the gaskets accumulated in the immersion frame 3, and when the lower screw sleeve 37 is threadedly connected to the lower thread 413 and the upper screw sleeve 33 is threadedly connected to the upper thread 412, under the same number of turns, the lower screw sleeve 37 needs to move a longer distance, so that the lower screw sleeve 37 moving downward away from the upper screw sleeve 33 pulls the telescopic rod 36 to deform, and drives the frame bottom 34 to deflect downward, so that the bottom of the immersion frame 3 presents an inverted cavity to increase the diffusion area, and with the spirally moving immersion frame 3, the silicone oil is passively poured into the inverted cavity, so that the oil impacts the gasket and produces suspension, so that the gasket with a layer of silicone oil on the surface can improve the self-lubricating and sealing properties of the gasket;

[0053] S7, then drying the siliconized gasket to remove moisture and residual solvent;

[0054] S8. Finally, the finished gaskets are inspected for quality to ensure they meet the requirements.

[0055] Embodiment 2

[0056] like Figure 1-9As shown, a synthetic polyisoprene gasket preparation system includes the above-mentioned synthetic polyisoprene gasket processing technology, the upper port of the immersion frame 3 is fixedly installed with a frame 31 that rotates on the output end of the hydraulic rod 2, and the frame 31 is fixedly installed with an upper screw sleeve 33;

[0057] It also includes a plurality of telescopic rods 36 and a frame bottom 34 hingedly arranged at the lower end of the immersion frame 3, and the ends 36 of the plurality of telescopic rods 36 are provided with an annular lower screw sleeve 37;

[0058] A plug barrel 4 is fixedly installed in the oil pool 1, and a screw frame 411 is provided on the plug barrel 4. The screw frame 411 is provided with an upper thread 412 and a lower thread 413 connected to each other, and the upper thread 412, the lower thread 413 and the lower screw sleeve 37 and the upper screw sleeve 33 are used for the following two-station movable assembly:

[0059] In the first station, the lower screw sleeve 37 is coupled with the upper thread 412, so that the immersion frame 3 is driven to move downward by the screw, and the angle between the frame bottom 34 and the side wall of the immersion frame 3 is a right angle;

[0060] In the second station, the lower screw sleeve 37 is coupled to the lower thread 413, and the upper screw sleeve 33 is coupled to the upper thread 412, so that the lower screw sleeve 37 moves away from the upper screw sleeve 33, and the angle between the frame bottom 34 and the side wall of the immersion frame 3 is an obtuse angle.

[0061] Specifically, an oil inlet and outlet are provided on the side wall of the oil pool 1, and the hydraulic rod 2 is installed on a bracket fixed to the oil pool 1 by using a bracket, which are all existing technologies and will not be described in detail here.

[0062] Furthermore, the frame 31 is composed of a plurality of rods, and the middle portion is a circular plate, and the circular plate is connected to the output end of the hydraulic rod 2 by rotation, so that the hydraulic rod 2 can drive the immersion frame 3 to move during the downward output movement. The upper screw sleeve 33 is a tubular sleeve (the inner wall is provided with a protrusion or ball that cooperates with the thread), and the length is greater than the range of movement of the immersion frame 3 up and down, so as to avoid the upper end of the screw frame 411 from contacting the circular plate and being unable to be threadedly connected.

[0063] Furthermore, the telescopic rod 36 is arranged circumferentially at the lower end of the immersion frame 3, and a torsion spring is provided at the hinge position, and the torsion spring is deformed during the downward deflection of the telescopic rod 36. The telescopic rod 36 is parallel to the horizontal plane in the default state, and the frame bottom 34 is driven by the telescopic rod 36.

[0064] Furthermore, the lower screw sleeve 37 is divided into arc plates arranged in a circle (the arc inner wall is also provided with protrusions or balls cooperating with the threads), and adjacent arc plates are connected by telescopic arc rods and springs, and the other end of the telescopic rod 36 is hinged on the side wall of the arc plate, so that after the lower screw sleeve 37 moves, the telescopic rod 36 is pulled to stretch, and the frame bottom 34 is driven to flip, so as to change the bottom of the immersion frame 3 to adapt to the silicone oil coating of the gasket.

[0065] Furthermore, an inner cover 341 (a corrosion-resistant elastic metal perforated plate, the material is prior art, and no further description is given here) is fixedly installed at the end of the frame bottom 34 and is located on the outside of the lower screw sleeve 37 and the upper screw sleeve 33, and adjacent inner covers 341 are connected using perforated rubber (corrosion-resistant material, prior art, and no further description is given here), and the length of the inner cover 341 is greater than the depth of the immersion frame 3 immersed in the oil, that is, the upper end of the inner cover 341 is always above the silicone oil surface, so as to achieve the purpose of intercepting the inner side of the bottom of the immersion frame 3 to prevent the gasket from falling and interfering with the threaded connection of the parts.

[0066] Furthermore, the screw frame 411 is also an arc-shaped plate arranged circumferentially (and during the coupling process, the protrusions or balls will make the arc-shaped plate of each screw frame 411 match a protrusion or ball so that the threaded connection can proceed normally), and the pitch of the upper thread 412 is smaller than the pitch of the lower thread 413, so that when the immersion frame 3 rotates the same number of times, the parts that cooperate with the two threads can produce a distance change, which is convenient for adjusting the bottom of the immersion frame 3 for the coating of the adaptive gasket.

[0067] The hydraulic rod 2 is used to push the immersion frame 3 downward, so that the lower screw sleeve 37 is first threadedly connected to the upper thread 412, and the immersion frame 3 is rotated and moved downward, the purpose is to disperse the gaskets accumulated in the immersion frame 3 and increase the contact area between the gasket and the silicone oil. When the lower screw sleeve 37 is threadedly connected to the lower thread 413 and the upper screw sleeve 33 is threadedly connected to the upper thread 412, under the same number of turns, the lower screw sleeve 37 needs to move a longer distance, so that the lower screw sleeve 37 moving downward away from the upper screw sleeve 33 pulls the telescopic rod 36 to deform, and drives the frame bottom 34 to deflect downward, so that the bottom of the immersion frame 3 presents an inverted cavity, so that the gasket has a larger diffusion area, and with the spirally moving downward immersion frame 3, the silicone oil is passively poured into the inverted cavity, so that the oil impacts the gasket and produces suspension, thereby ensuring the contact area between the gasket and the silicone oil, greatly reducing the problem of gaskets fitting each other and affecting the coating uniformity, and improving the puncture sealing and anti-chipping requirements of the gasket.

[0068] As an embodiment further provided by the present invention, the frame bottom 34 is rotatably disposed between adjacent telescopic rods 36, and an elastic strip 35 located outside the telescopic rod 36 is fixedly installed between every two frame bottoms 34;

[0069] A pool opening 11 is provided at one end of the oil pool 1, and a plurality of drain plates 12 are hingedly provided in the pool opening 11. A cover edge 343 is provided on the frame bottom 34. The cover edge 343 which moves downward in a spiral contacts the drain plate 12 for braking, so that the frame bottom 34 and the telescopic rod 36 are staggered in movement, and the elastic strip 35 is squeezed and deformed by the telescopic rod 36.

[0070] Specifically, Figure 6As shown in the cross-section, the rotating end of the telescopic rod 36 is a shaft with a ridge in the ring sleeve, while the rotating end of the frame bottom 34 is a ring sleeve, and an arc block that is resisted by the ridge is fixedly installed on the inner wall of the ring sleeve. The purpose is that the rotating telescopic rod 36 drives the ring sleeve to rotate through the ridge, that is, drives the frame bottom 34 to deflect.

[0071] Furthermore, a rubber damper is provided at the rotation position of the telescopic rod 36 , and the elastic strip 35 is specifically a rubber strip with holes, which is used to connect the gap between the frame bottoms 34 and is also attached to the top of the telescopic rod 36 .

[0072] Furthermore, the pool opening 11 is a portion with an enlarged diameter of the port of the oil pool 1 , the immersion frame plate 12 is a stainless steel metal plate with holes, and the immersion frame 3 moved to the highest position is not higher than the port of the pool opening 11 .

[0073] Furthermore, the silicone oil capacity height in the oil pool 1 is lower than the height of the hinged position of the drain plate 12, and adjacent drain plates 12 are connected with a perforated rubber belt to prevent the gasket entering between the drain plate 12 and the pool opening 11 from falling.

[0074] The cover edge 343 abuts against the drain rack 12 as the immersion frame 3 moves downward to a predetermined position, so that the drain rack 12 stops the cover edge 343, and the frame bottom 34 is deflected downward again around the hinge position under the action of the immersion frame 3 that continues to move downward, accompanied by the abutment rotation of the cover edge 343. At the same time, the elastic strip 35 is restricted by the telescopic rod 36, so that the deflected frame bottom 34 pulls the elastic strip 35 and deforms, which is used to make the raised elastic strip 35 stir the bottom of the inverted cavity, so that the silicone oil in the area is forced to swirl and flow, and impact the gasket to ensure the dispersion effect. Compared with the traditional stirring rod stirring, it can avoid the stirring rod directly hitting the baffle and causing damage, and the drain rack 12 will also be pulled and deflected by the cover edge 343 until the lower screw sleeve 37 is adapted to move to the end position, so as to avoid the immersion frame 3 being unable to move downward due to the deflected frame bottom 34 alone.

[0075] As another embodiment further provided by the present invention, an outer cover 342 is fixedly mounted on the frame bottom 34 , and the movable frame bottom 34 is staggered so that the end of the outer cover 342 extends into the upper port of the immersion frame 3 .

[0076] Specifically, the outer cover 342 with an arc-shaped cross section is installed at the rotation position of the frame bottom 34, and the cover edge 343 is fixedly installed on the upper end of the outer cover 342, and the outer cover 342 is also a stainless steel metal plate with holes.

[0077] The outer cover 342 is driven to deflect upward by the frame bottom 34 in the deflected state, and the upper end of the outer cover 342 is extended into the upper port of the immersion frame 3 and moved toward the axis, so that the trapezoidal area formed by the multiple outer covers 342 can intercept the upper port of the immersion frame 3, avoiding the buoyancy of the gasket in the immersion state and causing leakage problems, thereby ensuring the gasket coating efficiency.

[0078] As another embodiment further provided by the present invention, a plurality of notches are provided at the end of the plug tube 4, and a plug plate 21 is fixedly installed at the output end of the hydraulic rod 2, and the plug plate 21 slides in the plug tube 4 to squeeze out the oil in the notches.

[0079] Specifically, the output end of the hydraulic rod 2 will always be in the oil pool 1 to allow the plug plate 21 to perform piston movement, and a rubber ring is fixedly sleeved on the side of the plug plate 21, and the notch at the bottom of the plug tube 4 can directly connect to the bottom of the oil pool 1.

[0080] Furthermore, the diameter of the bottom of the plug barrel 4 is larger than the diameter of the screw frame 411, so that the plug plate 21 adapted to the bottom of the plug barrel 4 can push more silicone oil and enhance the flow effect of the silicone oil.

[0081] The plug plate 21 is driven downward by the hydraulic rod 2 to squeeze the silicone oil in the area below the plug tube 4 out of the notch. On the one hand, the silicone oil at the bottom of the oil pool 1 can be in a flowing state to prevent the silicone oil from precipitating and affecting the gasket coating effect. On the other hand, the squeezed silicone oil is forced to flow upward, so that the oil actively flows into the inverted cavity, further enhancing the impact effect of the oil on the gasket, making the gasket more efficiently broken up, and improving the coating effect of the silicone oil on the gasket.

[0082] As another embodiment further provided by the present invention, a barrel head 41 is fixedly mounted on the plug barrel 4 , and a hole communicating with the frame bottom 34 is provided on the barrel head 41 .

[0083] Specifically, the barrel head 41 is a trapezoidal cover between the plug barrel 4 and the screw frame 411 , and the holes are circumferentially arranged on the side wall of the barrel head 41 so that the holes with inclined surfaces face the frame bottom 34 , and the barrel head 41 is completely immersed in the oil pool 1 .

[0084] When the hydraulic rod 2 is reset and moved upward, the plug plate 21 pulls up the silicone oil in the area above the plug tube 4, and squeezes the silicone oil obliquely upward from multiple pores, and allows the silicone oil to enter from the bottom of the inverted cavity, and return to the oil pool 1 after circulation in the inverted cavity. The purpose is that the silicone oil in the circulating state can still impact the gasket in the cavity, prolong the suspension time of the gasket being impacted, and also improve the coating effect of the gasket.

[0085] As another embodiment further provided by the present invention, the lower screw sleeves 37 are opened to each other and the lower threads 413 are decoupled so that the frame bottom 34 is reset and the lower screw sleeves 37 are coupled to the upper threads 412 again.

[0086] Specifically, there is still a gap at the lower end of the immersion frame 3 for the telescopic rod 36 to deflect upward, but the torsion spring does not work in this state, and the telescopic rod 36 deflects downward and resets due to gravity after losing the driving force for deflecting upward.

[0087] The arc plates on the lower screw sleeve 37 are moved away from each other and open, so that the decoupled lower screw sleeve 37 is pulled and reset by the telescopic rod 36, and the reset lower screw sleeve 37 begins to couple with the upper thread 412, and moves the lower screw sleeve 37 toward the upper screw sleeve 33. However, since the telescopic rod 36 remains horizontal in the default state, the telescopic rod 36 is stretched again, so that the frame bottom 34 is driven by the telescopic rod 36 and deflected upward, making the bottom of the immersion frame 3 concave, and at the same time, the gasket lifted from the oil in the oil pool 1 gathers toward the edge of the immersion frame 3, and the coupled rotation generates centrifugal force, which can throw out the remaining silicone oil on the gasket, reduce the draining time of the gasket after siliconization, and improve the production line efficiency.

[0088] As another embodiment further provided by the present invention, an inclined strip 42 is fixedly installed in the hole of the barrel head 41, and a protrusion 422 located in the screw frame 411 is arranged on the inclined strip 42;

[0089] The plug plate 21 is fixedly mounted with plug pieces 22 arranged in a circle. The hydraulic rod 2 under reset makes the plug pieces 22 push the inclined strips 42 to move, and makes the protrusions 422 extend out of the screw frame 411 .

[0090] Specifically, a vertical bar 421 is fixedly installed on the upper end of the oblique bar 42, and a protrusion 422 is fixedly installed on the upper end of the vertical bar 421. The vertical bar 421 is arranged parallel to the axis, and the upper end of the oblique bar 42 is located in the barrel head 41, so that the plug 22 can slide against the oblique bar 42.

[0091] Furthermore, the oblique strip 42 and the plug piece 22 are both elastic metal sheets, and the elastic coefficient of the plug piece 22 is greater than the elastic coefficient of the oblique strip 42, while the vertical strip 421 is specifically a hard metal rod, and the end of the protrusion 422 is rounded to cooperate with the inner wall of the lower screw sleeve 37 to slide.

[0092] Furthermore, the protrusion 422 is located above the end position of the lower screw sleeve 37, so that before the lower screw sleeve 37 is coupled to the lower thread 413, the protrusion 422 is retracted into the screw frame 411 without interfering with the downward movement of the lower screw sleeve 37, and before the lower screw sleeve 37 moves up to the position of the protrusion 422, the protrusion 422 is extended out of the screw frame 411, thereby ensuring the decoupling work of the lower screw sleeve 37.

[0093] The plug plate 21 is pulled upward so that the plug piece 22 slides up to the position of the oblique strip 42, pushing the oblique strips 42 away from each other and increasing the angle between the vertical strip 421 and the axis, so that the protrusion 422 is driven by the upper end of the deflected vertical strip 421 to extend out of the gap on the screw frame 411. The purpose is to allow the protrusion 422, which moves radially away from the axis, to be slid and contacted and opened during the retreat and upward movement of the lower screw sleeve 37, so as to decouple the lower screw sleeve 37 from the lower thread 413 and ensure the drying efficiency of the gasket.

[0094] As another embodiment further provided by the present invention, a protrusion 361 is fixedly mounted on the telescopic rod 36, and the protrusion 361 reciprocates against the elastic strip 35 to slide when the telescopic rod 36 is coupled / decoupled.

[0095] Specifically, the protrusion 361 is disposed on the movable rod of the telescopic rod 36 , and the end of the block-shaped protrusion 361 is rounded to reduce the friction resistance between the protrusion 361 and the elastic strip 35 .

[0096] When the telescopic rod 36 experiences downward deflection, horizontal reset and upward deflection, the telescopic rod 36 is always in contact with the elastic strip 35, so that the reciprocating protrusion 361 peristaltically pushes the gasket on the elastic strip 35, which can not only improve the spreading coating effect of the gasket, but also make the siliconized gasket have a good drying effect.

[0097] As another embodiment further provided by the present invention, a notch connected to the outer cover 342 is opened at the upper end of the immersion frame 3, and the frame bottom 34 under decoupling enables the outer cover 342 to open the notch and enables the cover edge 343 to cooperate with the leaching rack plate 12.

[0098] Specifically, a frame edge 32 is hingedly provided in the notch on the immersion frame 3, and a torsion spring is provided at the hinge position. In the default state, the torsion spring keeps a predetermined angle between the frame edge 32 and the axis, that is, multiple frame edges 32 are in an upwardly opened state, and the frame edge 32 is also a stainless steel metal plate with holes.

[0099] Furthermore, the deformation coefficient of the torsion spring on the telescopic rod 36 is greater than the deformation coefficient of the torsion spring on the frame edge 32, so that the frame bottom 34 in the default state makes the outer cover 342 contact the frame edge 32, so that the frame edge 32 is parallel to the axis.

[0100] When the bottom of the immersion frame 3 is in a concave state, the upwardly deflected frame bottom 34 causes the outer cover 342 to open away from the axial direction. At this time, the frame edge 32 loses its resistance and limit and is also in an open state. The purpose is to throw the gasket in the immersion frame 3 out from the notch of the frame edge 32 under the action of centrifugal force. At this time, the cover edge 343 reaches the top of the drain rack 12, so that the thrown gasket will fall into between the drain rack 12 and the pool mouth 11 during the spiral upward movement of the immersion frame 3, and cooperate with the holes on the drain rack 12 to drain the silicone oil. The hinged drain rack 12 can also adapt to the amount of gaskets, and the gaskets remaining on the immersion frame 3 can also be drained, thereby improving the collection efficiency of the siliconized gaskets.

[0101] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A synthetic polyisoprene gasket processing technology, characterized in that: The following steps are involved: S1. Prepare polyisoprene rubber as a base material, and then prepare a vulcanizing agent, an accelerator, a filler, an antioxidant, a colorant, and perform a quality inspection; S2, mixing the polyisoprene rubber and various additives in proportion in an internal mixer or an open mixer to form a rubber compound, and then fully dispersing and mixing the rubber compound through mechanical shearing and extrusion; S3, pressing the mixed rubber material into a sheet or tubular semi-finished product through a calender or extruder, and then putting the semi-finished product into a vulcanization mold, and vulcanizing it under high temperature and high pressure to make the rubber molecules undergo cross-linking reaction to form a finished product with certain strength and elasticity; S4, taking the vulcanized gasket out of the mold and performing punching processing to obtain a gasket that meets the size requirements; S5, extracting the gasket with an alkaline aqueous solution to remove soluble impurities, followed by acid neutralization and multiple washings; S6, then putting the gasket into the immersion frame (3), and using the hydraulic rod (2) to pull the immersion frame (3) to axially spirally move in the oil pool (1) filled with silicone oil, so that the gasket in the immersion frame (3) is impacted by the silicone oil and evenly coated, so that the gasket with a layer of silicone oil on the surface can improve the self-lubricating and sealing properties of the gasket; S7, then drying the siliconized gasket to remove moisture and residual solvent; S8. Finally, the finished gaskets are inspected for quality to ensure they meet the requirements.

2. A synthetic polyisoprene gasket preparation system, comprising a synthetic polyisoprene gasket processing process according to claim 1, characterized in that: A frame (31) that rotates on the output end of the hydraulic rod (2) is fixedly mounted on the upper port of the immersion frame (3), and an upper screw sleeve (33) is fixedly mounted on the frame (31); It also includes a plurality of telescopic rods (36) and a frame bottom (34) hingedly arranged at the lower end of the immersion frame (3), and the ends (36) of the plurality of telescopic rods (36) are provided with an annular lower screw sleeve (37); A plug barrel (4) is fixedly installed in the oil pool (1), a screw frame (411) is arranged on the plug barrel (4), an upper thread (412) and a lower thread (413) connected to each other are opened on the screw frame (411), and the upper thread (412), the lower thread (413) and the lower screw sleeve (37) and the upper screw sleeve (33) are used for the following two-station movable assembly: At the first station, the lower screw sleeve (37) is coupled to the upper screw thread (412), so that the immersion frame (3) is driven to move downward by the screw, and the angle between the frame bottom (34) and the side wall of the immersion frame (3) is a right angle; At the second station, the lower screw sleeve (37) is coupled to the lower thread (413), and the upper screw sleeve (33) is coupled to the upper thread (412), so that the lower screw sleeve (37) moves away from the upper screw sleeve (33), and the angle between the frame bottom (34) and the side wall of the immersion frame (3) is an obtuse angle.

3. A system for preparing a synthetic polyisoprene gasket according to claim 2, characterized in that: The frame bottom (34) is rotatably arranged between adjacent telescopic rods (36), and an elastic strip (35) located outside the telescopic rod (36) is fixedly installed between every two frame bottoms (34); The oil pool (1) is provided with a pool opening (11) at the port, and a plurality of drain racks (12) are hingedly provided in the pool opening (11). A cover edge (343) is provided on the frame bottom (34). The cover edge (343) that moves downward in a spiral abuts against the drain rack (12) for braking, so that the frame bottom (34) and the telescopic rod (36) move in an offset manner, and the elastic strip (35) is squeezed and deformed by the telescopic rod (36).

4. A system for preparing a synthetic polyisoprene gasket according to claim 3, characterized in that: An outer cover (342) is fixedly mounted on the frame bottom (34), and the movable frame bottom (34) is staggered so that the end of the outer cover (342) extends into the upper port of the immersion frame (3).

5. A system for preparing a synthetic polyisoprene gasket according to claim 4, characterized in that: The end of the plug cylinder (4) is provided with a plurality of notches, and the output end of the hydraulic rod (2) is fixedly mounted with a plug plate (21), and the plug plate (21) slides in the plug cylinder (4) to squeeze out the oil in the notches.

6. A system for preparing a synthetic polyisoprene gasket according to claim 5, characterized in that: A barrel head (41) is fixedly mounted on the plug barrel (4), and a hole is provided on the barrel head (41) for communicating with the frame bottom (34).

7. A system for preparing a synthetic polyisoprene gasket according to claim 6, characterized in that: The lower screw sleeves (37) are opened to each other and the lower screw thread (413) is decoupled, so that the frame bottom (34) is reset and the lower screw sleeve (37) is coupled to the upper screw thread (412) again.

8. A system for preparing a synthetic polyisoprene gasket according to claim 7, characterized in that: An inclined strip (42) is fixedly installed in the hole of the barrel head (41), and a protrusion (422) located in the screw frame (411) is arranged on the inclined strip (42); The plug plate (21) is fixedly mounted with plug pieces (22) arranged in a circumferential manner, and the hydraulic rod (2) under resetting causes the plug pieces (22) to push the inclined strip (42) to move, and causes the protrusion (422) to extend out of the screw frame (411).

9. A system for preparing a synthetic polyisoprene gasket according to claim 8, characterized in that: A protrusion (361) is fixedly mounted on the telescopic rod (36), and the protrusion (361) reciprocates against the elastic strip (35) to slide when the telescopic rod (36) is coupled / decoupled.

10. A system for preparing a synthetic polyisoprene gasket according to claim 9, characterized in that: The upper end of the immersion frame (3) is provided with a notch connected to the outer cover (342); the frame bottom (34) is decoupled to open the notch of the outer cover (342) and to enable the cover edge (343) to cooperate with the leaching rack plate (12).

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