CN115782136A - Preparation method of rubber sealing ring - Google Patents

Abstract

The invention relates to a preparation method of a rubber sealing ring, and a processing device comprises the following steps: a frame; the hot-press forming mechanism is used for heating and forming the rubber strip; the turning and blanking mechanism is used for placing the rubber strip in the hot-press forming mechanism; the trimming and taking-out mechanism is used for taking out the sealing ring, trimming and putting the sealing ring into the collecting box; the transmission mechanism is used for driving the overturning blanking mechanism and the trimming removing mechanism to slide; the switching mechanism is used for switching the overturning blanking mechanism and the trimming removing mechanism, and the preparation method comprises the following steps: s1, feeding; s2, placing rubber strips; s3, hot press forming and mechanism switching of the rubber sealing ring; s4, trimming and taking out; and S5, circulating operation. The invention has the advantages that: the turnover discharging mechanism and the trimming taking-out mechanism are arranged, so that the rubber strips are placed, the taking-out and trimming of the sealing ring are not needed to be manually participated, and the scalding risk of workers is avoided.

Description

Preparation method of rubber sealing ring

Technical Field

The invention relates to the technical field of rubber sealing rings, in particular to a preparation method of a rubber sealing ring.

Background

The sealing ring is a common element for preventing gas and liquid leakage or foreign matter invasion, and the selection of the material of the sealing ring has great influence on the sealing performance and the service life of the sealing ring. The sealing ring prepared by rubber is a sealing element mainly applied to specific occasions such as high temperature or low temperature, the rubber sealing ring has good heat resistance and low temperature resistance, the elasticity is good, the sealing ring is not easy to age and deform, and the sealing ring also has good performance in the aspects of ozone resistance, solubility resistance, electric insulation, flame retardance and the like, along with the continuous development of science and the continuous progress of economy, people have higher requirements on the production quality of the sealing ring, but in the prior art, the following problems still exist when the sealing ring is prepared:

1. when the sealing ring is prepared, a rubber strip is generally manually placed between two dies, and because the dies are required to be heated for preparing the sealing ring, rubber is heated and melted and then is molded by the dies, the two dies are always in a high-temperature state, and the manual placement brings high scalding danger to workers;

2. when the sealing ring is prepared, the rubber strips are generally manually placed into the grooves on the die, if the diameter of the sealing ring is larger, the two rubber strips are required to be placed into the grooves in an end-to-end connection manner, so that workers need to be placed carefully to meet production requirements, and the efficiency is lower;

3. when the sealing ring is prepared, the sealing ring is manually taken out of the die, and the flash on the sealing ring is manually cut off to ensure the section shape of the sealing ring, so that the sealing ring is easily scalded when the sealing ring is manually taken out, and a worker uses a cutter to repair the sealing ring, so that the sealing ring is unsafe and easy to cut, and the quality of the sealing ring cannot be ensured.

Disclosure of Invention

In view of the above, it is necessary to provide a method for producing a rubber seal ring.

The invention discloses a preparation method of a rubber sealing ring, which applies a processing device to process a rubber strip, wherein the processing device comprises the following steps:

the collecting box is arranged at the lower end of the rack;

the hot-pressing forming mechanism is arranged on the rack and is used for heating and forming the rubber strips;

the overturning and blanking mechanism is arranged above the rack and is used for placing the rubber strips in the hot-pressing forming mechanism;

the trimming and taking-out mechanism is arranged above the rack and is used for taking out and trimming the sealing ring and putting the sealing ring into a collection box;

the transmission mechanism is arranged on the rack and used for driving the overturning blanking mechanism and the trimming removing mechanism to slide;

the switching mechanism is arranged on the rack and used for switching the overturning blanking mechanism and the trimming removing mechanism,

the preparation method of the rubber sealing ring comprises the following steps:

s1, feeding: placing a rubber strip required to be used for preparing the sealing element in an overturning and discharging mechanism to finish feeding;

s2, placing rubber strips: the transmission mechanism is utilized to drive the overturning and blanking mechanism to push the two rubber strips into the hot-pressing forming mechanism end to end, so that the placement of the rubber strips is completed, and the transmission mechanism is controlled to ascend to the highest point;

s3, hot press forming and mechanism switching of the rubber sealing ring: a hot-press forming mechanism is used for manufacturing a rubber sealing ring, and the switching mechanism is used for driving the trimming and taking-out mechanism to rotate 180 degrees to the right side so as to complete mechanism switching;

s4, trimming and taking out: controlling a transmission mechanism to drive a trimming and taking-out mechanism to descend, trimming and cutting the sealing ring by using the trimming and taking-out mechanism, cleaning the trimmed and cut rubber, resetting the trimming and taking-out mechanism by using the transmission mechanism and a switching mechanism, and dropping the sealing ring in a collection box by using the trimming and taking-out mechanism;

s5, circulating work: the sealing elements can be continuously produced by continuously and circularly carrying out the steps S2-S4 without manual placement, taking out and trimming, and the method is convenient and quick and has no artificial danger.

In one embodiment, the transmission mechanism includes a bracket, a first motor, a sliding rod, a screw rod, and a bracket, wherein the bracket is connected to the turnover discharging mechanism on one side and the trimming removing mechanism on the other side, the bracket is disposed on the frame, the sliding rod is fixedly connected to both the frame and the bracket, the screw rod is in threaded connection with the bracket, the sliding rod is slidably connected to the bracket, the sliding rod is parallel to the screw rod, the motor is fixedly disposed on the bracket, and the output end of the motor is connected to the screw rod, so that the motor can drive the screw rod to rotate, thereby driving the bracket to slide up and down along the sliding rod, thereby driving the turnover discharging mechanism and the trimming removing mechanism to move up and down.

In one embodiment, the turnover discharging mechanism comprises a shell, a second motor, a first gear and a second gear, wherein the shell is sleeved in the support in a rotating mode, the second gear is arranged on the shell, the second motor is fixedly arranged on the support, an output end of the second motor is connected with the first gear, the first gear is connected with the second gear, the second motor is driven to drive the first gear to rotate, so that the second gear is driven to rotate, the shell is driven to rotate, and the turnover discharging mechanism can rotate 180 degrees integrally.

In one of them embodiment, upset unloading mechanism include second pole, baffle, push pedal, third spring, arc, the silo has still been seted up on the shell, the rubber strip has been placed in the silo, second pole both ends respectively with push pedal and shell fixed connection, the push pedal with shell sliding connection and push pedal contact rubber strip one side can be deformed, the baffle with push pedal sliding connection and butt push pedal, third spring both ends butt push pedal and baffle respectively, the arc is fixed to be set up on the shell, the drive the shrink of second pole can drive the push pedal moves right and promotes the rubber strip and hugs closely the arc to the baffle can slide right under the third spring action and block the rubber strip in silo exit.

In one embodiment, the turnover discharging mechanism further includes a second rack, a third gear, a first rack, a discharging plate, a first spring, and a second spring, the second rack, the third gear, the first rack, the discharging plate, the first spring, and the second spring are all disposed in the housing, the second rack is slidably connected to the arc plate and the housing, and the length of the lower end of the second rack exceeds the housing, the second gear is simultaneously engaged with the first rack and the second rack and is disposed in parallel with the first rack, the discharging plate is slidably connected to the first rack and the lower end of the discharging plate abuts against the rubber strip, the first spring simultaneously abuts against the discharging plate and the first rack, the second spring simultaneously abuts against the housing and the first rack, the second rack can move to drive the gear to rotate, and further drive the first rack to move downwards to compress the first spring and the second spring, and when the push plate retracts leftwards, the discharging plate can push out the rubber strip under the action of the first spring.

In one embodiment, the hot-press forming mechanism comprises a first mold, the first mold is fixedly arranged on the rack, and a first groove and a second groove are formed in the first mold, so that the two rubber strips can be oppositely arranged end to end.

In one embodiment, in step S2, the first motor is first controlled to rotate to drive the screw to rotate, so as to drive the bracket to slide on the slide rod, so that the bracket drives the turnover feeding mechanism to descend, the second electric rod contracts to push the push plate to move rightwards, the push baffle is pushed to slide rightwards under the action of the third spring to block the rubber strip at the outlet of the trough, the push plate pushes the rubber strip to move towards the arc-shaped plate and deforms the push plate into an arc shape until the rubber strip is tightly attached to the arc-shaped plate, the rubber strip is made into a semicircular shape under the action of the push plate and the arc-shaped plate, when the second rack is in contact with the first mold, the second rack drives the third gear to rotate, and the first rack is driven to move downwards through the third gear, thereby compress second spring and first spring, when the shell descends to a take the altitude, the control pole stretches out and makes the push pedal withdraw left, loosen the rubber strip, push down the flitch and push the rubber strip in first recess under the first spring action, realize putting of a rubber strip, then the control support rises, start the second motor and drive first gear revolve, thereby drive second gear revolve, and then drive whole upset unloading mechanism and rotate 180 degrees, then the decline of control support, and the same reason, can put next rubber strip in the second recess, and two rubber strips are relative end to end, accomplish putting of rubber strip, control support rises to the peak after putting.

In one embodiment, the hot-press forming mechanism further comprises a second mold and a telescopic first electric pole, the second mold is rotatably connected with the first mold, one end of the first electric pole is hinged to the frame, the other end of the first electric pole is hinged to the second mold, and the first electric pole is controlled to stretch and contract to control the second mold to turn over so as to cover the first mold.

In one embodiment, in step S3, after the rubber strip is placed, the first electric pole is controlled to extend out, the second mold is pushed to turn over, the first mold and the second mold are covered together, the first mold and the second mold are heated, so that the rubber strip is melted, and then the rubber strip becomes the shape in the mold, and the rubber sealing ring is manufactured.

In one embodiment, the top of the second mold is further provided with a first protrusion, the switching mechanism comprises a rotating roller, a sliding block, a sixth spring, a seventh spring and a positioning pin, the rotating roller is rotatably sleeved outside the sliding rod and is fixedly connected with the frame body, the sliding block is slidably arranged on the frame, the sixth spring is abutted against the sliding block and the frame simultaneously, the sliding block is provided with a second protrusion and is provided with a positioning groove, the positioning pin is slidably arranged in the positioning groove, the seventh spring is arranged in the positioning groove and is abutted against the positioning pin and the sliding block simultaneously, the positioning pin is slidably connected with the rotating roller, and the first protrusion can push the second protrusion to drive the sliding block to move downwards to overcome the sixth spring, so that the positioning pin is driven to slide on the rotating roller, the rotating roller is driven to rotate 180 degrees, and the bracket rotates 180 degrees to drive the trimming edge taking-out mechanism to the right side.

In one embodiment, the rotating roller is provided with a first straight groove, a second straight groove, a first spiral groove and a second spiral groove, a first boss is arranged at the joint of the first straight groove and the first spiral groove, a second boss is arranged at the joint of the first straight groove and the second spiral groove, a third boss is arranged at the joint of the second straight groove and the second spiral groove, a fourth boss is arranged at the joint of the second straight groove and the first spiral groove, the slider moves downwards to drive the positioning pin to slide in the first straight groove and slide along the first spiral groove under the action of the first boss, so that the rotating roller is driven to rotate, the positioning pin can cross the fourth boss to enter the second straight groove under the action of a seventh spring, and the positioning pin can slide upwards along the second straight groove and can cross the third boss to enter the second spiral groove.

In one embodiment, in step S3, when the second mold is turned over, the first protrusion pushes the second protrusion to drive the slide block to move downward against the sixth spring, so as to drive the positioning pin to slide in the first straight groove, under the action of the first boss, the positioning pin enters the first spiral groove and drives the rotating roller to rotate 180 degrees, so that the left-side removing mechanism comes to the right, under the action of the seventh spring, the positioning pin crosses the fourth boss to enter the second straight groove, so as to complete mechanism switching, after the preparation of the sealing ring is completed, the first electric pole is controlled to contract, so as to drive the second mold to turn over and open, the first protrusion is separated from the second protrusion, under the action of the sixth spring, the slide block is driven to ascend, the positioning pin is driven to move upward along the second straight groove, and enters the second spiral groove under the action of the third boss, so as to complete the action.

In one embodiment, the trimming and removing mechanism comprises a pressing cover, a first trimming knife, a second trimming knife, a third motor, a third bevel gear, a fourth bevel gear, a fifth bevel gear, a sixth bevel gear, a seventh bevel gear, a fourth gear and a fifth gear, the pressing cover is fixedly arranged on the bracket, the first trimming knife and the second trimming knife are rotatably arranged on the bracket and are respectively arranged at two sides of the pressing cover, the third motor is fixedly arranged on the bracket, the third bevel gear is connected with the output end of the third motor, the fourth bevel gear is arranged on the bracket and is meshed with the third bevel gear and the fourth bevel gear, and the fourth gear and the fourth bevel gear are coaxially arranged, the fourth gear is meshed with the fifth gear, the fifth gear is rotatably sleeved on the bracket and is fixedly connected with the first trimming cutter, the fifth gear can drive the first trimming cutter to rotate, the fifth bevel gear is rotatably sleeved on the bracket and is fixedly connected with the first trimming cutter, the first trimming cutter can drive the fifth bevel gear to rotate, the seventh bevel gear is rotatably sleeved on the compression cover and is respectively meshed with the fifth bevel gear and the sixth bevel gear from top to bottom, the sixth bevel gear is rotatably sleeved on the bracket and is fixedly connected with the second trimming cutter, and the seventh bevel gear can drive the sixth bevel gear to reversely rotate, so that the second trimming cutter can be driven to reversely rotate.

In one embodiment, the trimming and taking-out mechanism further comprises a fifth spring, a piston and a one-way valve, a first flow passage, a first outlet and a containing cavity are formed in the pressing cover, the first outlet can be in contact with the sealing ring, a second flow passage and a second outlet are formed in the support, the first flow passage is connected with one end of the first outlet, the containing cavity and one end of the second flow passage, a third outlet is formed in the containing cavity, the one-way valve is connected with the other end of the second flow passage and the second outlet, the piston is arranged in the containing cavity in a sliding mode, one end of the piston extends out of the third outlet, the fifth spring is abutted against the wall of the containing cavity and the piston at the same time, the first trimming knife can push the piston to overcome the fifth spring, air is discharged from the second outlet through the first flow passage, the second flow passage and the one-way valve, and the sealing ring is sucked on the pressing cover due to the fact that the external air pressure is greater than the internal pressure of the first flow passage.

In one embodiment, the check valve comprises a valve core, a valve seat, a feeler lever and an eighth spring, the feeler lever is arranged in the second flow passage, one end of the feeler lever is fixedly connected with the valve core, the other end of the feeler lever extends out of the second flow passage, the eighth spring is abutted against the valve seat and the valve core simultaneously, and when the feeler lever abuts against a frame body, the valve core can overcome the spring to open the check valve.

In one embodiment, the deburring withdrawing mechanism further comprises a cleaning plate slidably disposed on the bracket, a fourth spring abutting against the cleaning plate and the bracket at the same time, a first bevel gear fixedly disposed on the cleaning plate, and a second bevel gear disposed on the bracket and engaged with the first bevel gear and the second bevel gear, wherein the second bevel gear is engaged with the fourth bevel gear, and the first mold can push the cleaning plate to move upward against the fourth spring to separate the first bevel gear from the second bevel gear.

In one embodiment, in step S4, the support is controlled to descend to drive the trimming taking-out mechanism to descend, so that the pressing cover presses the sealing ring, the first trimming blade and the second trimming blade are respectively located at two sides of the sealing ring, the cleaning plate moves upwards against a fourth spring to separate the first bevel gear and the second bevel gear, a third motor is started to drive a third bevel gear to rotate, so that the fourth bevel gear is driven to rotate, so that the fourth gear is driven to rotate, so that the fifth gear is driven to rotate, so that the first trimming blade is driven to rotate, so that the fifth bevel gear is driven to rotate, the sixth bevel gear is driven to rotate by a seventh bevel gear, the rotation direction of the seventh bevel gear is opposite to that of the fifth bevel gear, so that the second trimming blade is driven to rotate in the opposite direction, so that the first trimming blade and the second trimming blade can trim the sealing ring, meanwhile, during the rotation of the first trimming blade, the piston is driven to move downwards against the fifth spring, because the hole in the pressing cover is blocked by the sealing ring, so that the air in the first flow passage and the second flow passage is exhausted through the one-way valve, so that the air pressure in the first flow passage is less than the atmospheric pressure, the sealing ring is sucked on the pressing cover, so as to control the pressing cover to finish trimming and the trimming of the first trimming blade,

the bracket is controlled to rise until the first bevel gear is meshed with the second bevel gear, the cleaning plate is tightly attached to the first die, the third motor is started to rotate, the cleaning plate is further driven to swing back and forth, the rubber which is trimmed and cut is cleaned,

then the bracket is controlled to continuously rise, when the bracket rises to a sufficient height, the first electric pole is controlled to extend out to drive the second die to turn over, the first bulge pushes the slide block to fall, the positioning pin slides along the second spiral groove under the action of the third boss to drive the rotating roller to rotate 180 degrees, the positioning pin passes through the second boss to enter the first straight groove under the action of the seventh spring to drive the trimming and taking-out mechanism to reach the left side, then the first electric pole is controlled to stretch and retract, the second die turns over, the slide block rises under the action of the sixth spring, the positioning pin slides along the first straight groove under the action of the second boss and passes through the first boss to enter the second straight groove,

when the trimming and taking-out mechanism comes to the left side, the support is controlled to ascend to the highest point, so that the feeler lever is touched with the support body, the one-way valve is opened, the air pressure in the flow channel is increased, the sealing element falls into the collecting box, and trimming and taking-out are completed.

The invention has the advantages that:

1. through the arrangement of the turnover discharging mechanism and the trimming taking-out mechanism, the rubber strips are placed, the taking-out and trimming of the sealing ring do not need manual participation, the scalding risk of workers is avoided, and the quality of the sealing ring can be ensured through the trimming of equipment;

2. through the arrangement of the turnover discharging mechanism, the rubber strips are pushed into the first grooves in the die through the discharging push plate, and after one rubber strip is placed, the mechanism is turned over, and a second rubber strip is placed into the second groove, so that the rubber strips are naturally connected end to end, manual placement is not needed, and the efficiency is improved;

3. through the arrangement of the trimming and taking-out mechanism, after the sealing ring is prepared, the flashes on the sealing ring can be cut off through the relative rotation of the first trimming knife and the second trimming knife, meanwhile, the piston is pushed to move through the first trimming knife, the air in the compression cover is discharged through the one-way valve, the air pressure in the compression cover is further smaller than the atmospheric pressure, the compression cover sucks the sealing ring, the sealing ring can be taken away from the mold and comes above the collection box, then the sealing ring can naturally fall through the opening of the controlled one-way valve, the manual taking-out and trimming are not needed, the danger of workers is reduced, and the quality can be ensured through mechanical trimming;

4. by arranging the cleaning plate which can slide relative to the support, the first bevel gear and the second bevel gear are driven to be separated when the pressing cover is attached to the sealing ring, the cleaning plate cannot be rotated when the motor rotates, the pressing cover drives the sealing ring to leave the die and then enables the bevel gear to be meshed with the second bevel gear after trimming is finished, the cleaning plate is driven to swing by the motor rotation, rubber cut by trimming can be cleaned, and subsequent processing is prevented from being hindered;

5. through setting up rotatory roller to set up the track that has the boss on rotatory roller, utilize the upset of second mould to drive the locating pin and slide in the track, and then drive rotatory roller and rotate, thereby realize the switching of upset unloading mechanism and deburring taking out mechanism, need not power component, reduce cost.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view taken at I of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view taken at II of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged view of FIG. 1 taken at III in accordance with the present invention;

FIG. 5 is an enlarged view of FIG. 1 taken at IV of the present invention;

FIG. 6 isbase:Sub>A sectional view taken along line A-A of FIG. 5 in accordance with the present invention;

FIG. 7 is a three-dimensional view of a rotating roll of the present invention;

fig. 8 is a three-dimensional view of another orientation of the rotating roll of the present invention.

In the figure, the position of the first and second end faces, the collecting box comprises a machine frame 1, a collecting box 11, a bracket 51, a first motor 33, a screw rod 32, a sliding rod 31, a frame body 34, a second electric pole 46, a baffle 471, a push plate 472, a third spring 473, an arc-shaped plate 412, a second rack 453, a third gear 452, a first rack 451, a first spring 454, a second spring 455, a shell 41, a second motor 441, a first gear 442, a second gear 411, a trough 42, a rubber strip 43, a pressing cover 512, a first trimming knife 531, a second trimming knife 532, a cleaning plate 541, a fourth spring 543, a first bevel gear 524, a second bevel gear 523, a third bevel gear 522, a fourth bevel gear 521, a fourth gear 525, a fifth gear 526, a fifth bevel gear 527, a sixth bevel gear 528, seventh bevel gear 529, piston 551, fifth spring 552, first flow passage 511, second flow passage 515, first outlet 513, second outlet 514, third motor 56, check valve 61, feeler lever 611, eighth spring 62, first die 21, first groove 211, second groove 212, second die 22, first projection 221, first electric pole 23, rotating roller 71, second boss 716, first straight groove 711, first boss 715, first spiral groove 712, fourth boss 718, second straight groove 713, third boss 717, second spiral groove 714, slider 72, second projection 721, sixth spring 73, positioning pin 74, seventh spring 75.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The invention discloses a preparation method of a rubber sealing ring, which applies a processing device to process a rubber strip 43, as shown in figure 1, the processing device comprises:

the device comprises a rack 1, wherein a collecting box 11 is arranged at the lower end of the rack 1;

the hot-pressing forming mechanism is arranged on the rack 1 and is used for heating and forming the rubber strips 43;

the overturning and blanking mechanism is arranged above the rack 1 and is used for placing the rubber strips 43 in the hot-press forming mechanism;

the trimming and taking-out mechanism is arranged above the rack 1 and is used for taking out and trimming the sealing ring and putting the sealing ring into the collection box 11;

the transmission mechanism is arranged on the rack 1 and is used for driving the overturning blanking mechanism and the trimming removing mechanism to slide;

a switching mechanism which is arranged on the frame 1 and is used for switching a turnover blanking mechanism and a trimming removing mechanism,

the preparation method of the rubber sealing ring comprises the following steps:

s1, feeding: placing the rubber strips 43 required for preparing the sealing element in the overturning and discharging mechanism to complete feeding;

s2, placing of the rubber strips 43: the transmission mechanism is utilized to drive the turnover discharging mechanism to push the two rubber strips 43 into the hot-pressing forming mechanism end to end, so that the placement of the rubber strips 43 is completed, and the transmission mechanism is controlled to rise to the highest point;

s3, hot press forming and mechanism switching of the rubber sealing ring: a hot-press forming mechanism is used for manufacturing a rubber sealing ring, and the switching mechanism is used for driving the trimming and taking-out mechanism to rotate 180 degrees to the right side so as to complete mechanism switching;

s4, trimming and taking out: controlling a transmission mechanism to drive a trimming and taking-out mechanism to descend, trimming and cutting the sealing ring by using the trimming and taking-out mechanism, cleaning the trimmed and cut rubber, resetting the trimming and taking-out mechanism by using the transmission mechanism and a switching mechanism, and dropping the sealing ring into the collection box 11 by using the trimming and taking-out mechanism;

s5, circulating operation: the sealing elements can be continuously produced by continuously and circularly carrying out the steps S2-S4 without manual placement, taking out and trimming, so that the method is convenient and quick, and has no manual danger.

Preferably, drive mechanism include support 51, first motor 33, slide bar 31, screw rod 32, support body 34, support 51 connects on one side upset unloading mechanism, and the another side is connected the mechanism is taken out to the deburring, support body 34 sets up in frame 1, slide bar 31 with frame 1 and the equal fixed connection of support body 34, screw rod 32 with support 51 threaded connection, slide bar 31 with support 51 sliding connection and slide bar 31 with screw rod 32 parallel arrangement, the motor is fixed to be set up on support body 34 and the output with screw rod 32 is connected, the motor can drive screw rod 32 rotates, thereby drives support 51 follows slide bar 31 slides from top to bottom, thereby drives upset unloading mechanism with the deburring is taken out the mechanism up-and-down motion.

Preferably, as shown in fig. 5, the overturning blanking mechanism includes a housing 41, a second motor 441, a first gear 442 and a second gear 411, the housing 41 is rotatably sleeved in the bracket 51, the second gear 411 is disposed on the housing 41, the second motor 441 is fixedly disposed on the bracket 51, and an output end of the second motor 441 is connected to the first gear 442, the first gear 442 is connected to the second gear 411, and the second motor 441 is driven to drive the first gear 442 to rotate, so as to drive the second gear 411 to rotate, and further drive the housing 41 to rotate, so that the overturning blanking mechanism can integrally rotate by 180 degrees.

It can be understood that the second gear 411 is fixedly sleeved outside the housing 41, and the bracket 51 does not rotate when the second motor 441 is driven to rotate to drive the housing 41 to rotate.

Preferably, as shown in fig. 5 and fig. 6, the turnover discharging mechanism includes a second electric pole 46, a baffle 471, a push plate 472, a third spring 473, and an arc plate 412, the housing 41 is further provided with a trough 42, a rubber strip 43 is placed in the trough 42, two ends of the second electric pole 46 are respectively fixedly connected with the push plate 472 and the housing 41, the push plate 472 is slidably connected with the housing 41, one side of the push plate 472, which is in contact with the rubber strip 43, is deformable, the baffle 471 is slidably connected with the push plate 472 and abuts against the push plate 472, two ends of the third spring 473 are respectively abutted against the push plate 472 and the baffle 471, the arc plate 412 is fixedly arranged on the housing 41, the second electric pole 46 is driven to contract to drive the push plate 472 to move rightward and push the rubber strip 43 to be tightly attached to the arc plate 412, and the baffle 471 can slide rightward to block the rubber strip 43 at an outlet of the trough 42 under the action of the third spring 471.

Preferably, as shown in fig. 5 and 6, the turnover discharging mechanism further includes a second rack 453, a third gear, a first rack 451, a discharging plate, a first spring 454, and a second spring 455, the second rack 453, the third gear, the first rack 451, the discharging plate, the first spring 454, and the second spring 455 are all disposed in the housing 41, the second rack 453 is slidably connected to the arc-shaped plate 412 and the housing 41, and has a lower end longer than the housing 41, the second gear 411 is simultaneously engaged with the first rack 451 and the second rack 453, and the first rack 451 and the second rack 453 are disposed in parallel, the discharging plate is slidably connected to the first rack 451, and has a lower end abutting against the rubber strip 43, the first spring 454 simultaneously abuts against the first rack 451, the second spring 455 simultaneously abuts against the housing 41 and the first rack 453, the second rack moves to rotate, and drives the first rack 451 to move downward to compress the first spring 454 and the second spring 455, and when the first pushing plate 451 acts to the left, the second spring 472 can push the lower rubber strip 43 out.

Preferably, the hot press forming mechanism includes a first mold 21, the first mold 21 is fixedly disposed on the frame 1, and a first groove 211 and a second groove 212 are formed on the first mold 21, so that the two rubber strips 43 can be placed end to end in an opposite manner.

Preferably, the thermoforming mechanism further comprises a second mold 22 and a first telescopic electric pole 23, the second mold 22 is rotatably connected to the first mold 21, one end of the first electric pole 23 is hinged to the frame 1, the other end of the first electric pole 23 is hinged to the second mold 22, and the first electric pole 23 is controlled to stretch and retract so as to control the second mold 22 to turn over and cover the first mold 21.

It can be understood that the second mold 22 is also provided with two grooves respectively matching with the first groove 211 and the second groove 212 of the first groove 211, and when the second mold 22 is covered on the first mold 21, the two rubber strips 43 also enter the grooves of the second mold 22.

Preferably, as shown in fig. 1 and 4, the top of the second mold 22 is further provided with a first protrusion 221, the switching mechanism includes a rotating roller 71, a sliding block 72, a sixth spring 73, a seventh spring 75 and a positioning pin 74, the rotating roller 71 is rotatably sleeved outside the sliding rod 31 and is fixedly connected with the frame 34, the sliding block 72 is slidably disposed on the frame 1, the sixth spring 73 abuts against the sliding block 72 and the frame 1 at the same time, the sliding block 72 is provided with a second protrusion 721 and is provided with a positioning slot, the positioning pin 74 is slidably disposed in the positioning slot, the seventh spring 75 is disposed in the positioning slot and abuts against the positioning pin 74 and the sliding block 72 at the same time, the positioning pin 74 and the rotating roller 71 are slidably connected, and the first protrusion 221 can push the second protrusion 721 to drive the sliding block 72 to move downward against the sixth spring 73, so as to drive the positioning pin 74 to slide on the rotating roller 71, and further drive the rotating roller 71 to rotate 180 degrees, so that the bracket 51 rotates 180 degrees to bring the edge-trimming-taking-out mechanism to the right side.

It will be appreciated that at this point, the trim take-out mechanism is brought to the right due to the rotation of the bracket 51, while the inverted feed mechanism, which was originally on the right, is brought to the left in its entirety.

Preferably, as shown in fig. 7 and 8, the rotating roller 71 is provided with a first straight groove 711, a second straight groove 713, a first spiral groove 712 and a second spiral groove 714, a first boss 715 is disposed at a joint of the first straight groove 711 and the first spiral groove 712, a second boss 716 is disposed at a joint of the first straight groove 711 and the second spiral groove 714, a third boss 717 is disposed at a joint of the second straight groove 713 and the second spiral groove 714, a fourth boss 718 is disposed at a joint of the second straight groove 713 and the first spiral groove 712, the downward movement of the slider 72 can drive the positioning pin 74 to slide in the first straight groove 711 and slide along the first boss 715 and further drive the rotating roller 71 to rotate, the positioning pin 74 can pass through the fourth boss 718 and enter the second straight groove 713 under the action of the seventh spring 75, and the positioning pin 74 can slide upward along the second straight groove 713 and can enter the second spiral groove 714 beyond the third boss 717.

Preferably, as shown in fig. 2, the trimming and removing mechanism comprises a pressing cover 512, a first trimming blade 531, a second trimming blade 532, a third motor 56, a third bevel gear 522, a fourth bevel gear 521, a fifth bevel gear 527, a sixth bevel gear 528, a seventh bevel gear 529, a fourth gear 525 and a fifth gear 526, the pressing cover 512 is fixedly arranged on the bracket 51, the first trimming blade 531 and the second trimming blade 532 are rotatably arranged on the bracket 51 and are respectively arranged at two sides of the pressing cover 512, the third motor 56 is fixedly arranged on the bracket 51, the third bevel gear 522 is connected with the output end of the third motor 56, the fourth bevel gear 521 is provided on the bracket 51 and the third bevel gear 522 is engaged with the fourth bevel gear 521, the fourth gear 525 and the fourth bevel gear 521 are coaxially arranged, the fourth gear 525 and the fifth gear 526 are meshed, the fifth gear 526 is rotatably fitted over the holder 51 and is fixedly connected to the first trimming blade 531, the fifth gear 526 rotates to drive the first trimming blade 531 to rotate, the fifth bevel gear 527 is rotatably sleeved on the bracket 51 and is fixedly connected with the first trimming blade 531, the first trimming knife 531 rotates to drive the fifth bevel gear 527 to rotate, the seventh bevel gear 529 is rotatably sleeved on the compression cover 512 and is vertically meshed with the fifth bevel gear 527 and the sixth bevel gear 528 respectively, the sixth bevel gear 528 is rotatably sleeved on the bracket 51 and is fixedly connected with the second trimming blade 532, the seventh bevel gear 529 can drive the sixth bevel gear 528 to rotate reversely, so that the second trimming cutter 532 can be driven to rotate reversely.

Preferably, as shown in fig. 2, the trimming removing mechanism further includes a fifth spring 552, a piston 551, and a check valve 61, wherein the pressing cover 512 has a first flow passage 511, a first outlet 513, and a cavity therein, the first outlet 513 can contact a sealing ring, the bracket 51 has a second flow passage 515 and a second outlet 514 therein, the first flow passage 511 is connected to one end of the first outlet 513, the cavity and the second flow passage 515, the cavity has a third outlet opened thereon, the check valve 61 is connected to the other end of the second flow passage 515 and the second outlet 514, the piston 551 is slidably disposed in the cavity and has one end extending out of the third outlet, the fifth spring 552 abuts against the cavity wall and the piston 551 at the same time, the first trimming blade 531 can push the piston 551 against the fifth spring 552, air is discharged from the second outlet 514 through the first flow passage 511, the second flow passage 515 and the check valve 61, and the sealing ring 512 is sucked due to the external air pressure greater than the internal pressure of the first flow passage 511.

Preferably, as shown in fig. 3, the check valve 61 includes a valve core, a valve seat, a feeler lever 611 and an eighth spring 62, the feeler lever 611 is disposed in the second flow channel 515, one end of the feeler lever 611 is fixedly connected to the valve core, the other end of the feeler lever 611 extends out of the second flow channel 515, the eighth spring 62 is abutted to the valve seat and the valve core, and when the feeler lever 611 abuts against the frame body 34, the valve core can open the check valve 61 against the spring.

It will be appreciated that when the bracket 51 lowers the edge-trimmer take-out mechanism to the edge-trimming operating position, the contact rod 611 is separated from the frame 34, the air in the first and second flow passages 511 and 515 can only be discharged from the one-way valve 61 in one direction to the second outlet 514, the air pressure in the flow passages is less than the ambient pressure, the rubber ring is sucked onto the hold-down cap 512, and when the bracket 51 rotates 180 degrees and is raised to bring the edge-trimmer take-out mechanism back to the left position again, the contact rod 611 makes contact with the frame 34 again, the one-way valve 61 is opened, and the air enters the second flow passage 515 and the first flow passage 511 from the second outlet 514, so that the pressure is increased and the rubber ring falls.

Preferably, the trimming removing mechanism further includes a cleaning plate 541, a fourth spring 543, a first bevel gear 524 and a second bevel gear 523, the cleaning plate 541 is slidably disposed on the bracket 51, the fourth spring 543 abuts against the cleaning plate 541 and the bracket 51, the first bevel gear 524 is fixedly disposed on the cleaning plate 541, the second bevel gear 523 is disposed on the bracket 51, the first bevel gear 524 and the second bevel gear 523 are engaged, the second bevel gear 523 and the fourth bevel gear 521 are engaged, and the first mold 21 can push the cleaning plate 541 to move upward against the fourth spring 543 to separate the first bevel gear 524 and the second bevel gear 523.

Preferably, in step S2, the first motor 33 is controlled to rotate to drive the screw 32 to rotate, so as to drive the bracket 51 to slide on the sliding rod 31, so that the bracket 51 drives the turnover discharging mechanism to descend, and at the same time, the second electric pole 46 contracts to push the push plate 472 to move rightwards, the baffle 471 is pushed to slide rightwards under the action of the third spring 473 to block the rubber strip 43 at the outlet of the trough 42, the push plate 472 pushes the rubber strip 43 to move towards the arc-shaped plate 412 and the push plate 472 deforms into an arc shape until the rubber strip 43 and the arc-shaped plate 412 are attached tightly, the rubber strip 43 is made into a semicircular shape under the action of the push plate 472 and the arc-shaped plate 412, when the second rack 453 contacts with the first mold 21, the second rack 453 drives the third gear to rotate, and the first rack 451 is driven by the third gear to move downwards, thereby compressing the second spring 455 and the first spring 454, when the housing 41 descends to a certain height, controlling the electric pole to extend to enable the push plate 472 to retract to the left, loosening the rubber strip 43, pushing the blanking plate to push the rubber strip 43 into the first groove 211 under the action of the first spring 454, so as to achieve placement of one rubber strip 43, then controlling the bracket 51 to ascend, starting the second motor 441 to drive the first gear 442 to rotate, thereby driving the second gear 411 to rotate, further driving the whole turnover blanking mechanism to rotate 180 degrees, and then controlling the bracket 51 to descend.

Preferably, in step S3, after the rubber strip 43 is placed, the first electric pole 23 is controlled to extend, the second mold 22 is pushed to turn over and cover the first mold 21, and the first mold 21 and the second mold 22 are heated, so that the rubber strip 43 melts and then becomes the shape in the mold, and the rubber sealing ring is manufactured.

Preferably, in step S3, when the second mold 22 is turned over, the first protrusion 221 pushes the second protrusion 721 to drive the slider 72 to move downward against the sixth spring 73, so as to drive the positioning pin 74 to slide in the first straight groove 711, under the action of the first boss 715, the positioning pin 74 enters the first spiral groove 712 and drives the rotating roller 71 to rotate 180 degrees, so that the left withdrawing mechanism comes to the right, under the action of the seventh spring 75, the positioning pin 74 passes over the fourth boss 718 to enter the second straight groove 713, the mechanism switching is completed, after the seal ring preparation is completed, the first electric rod 23 is controlled to contract, the second mold 22 is driven to turn over and open, the first protrusion 221 is separated from the second protrusion 721, the slider 72 is pushed to rise under the action of the sixth spring 73, the positioning pin 74 is driven to move upward along the second straight groove 713, and enters the second spiral groove 714 under the action of the third boss 717, and the action is completed.

Preferably, in step S4, the control bracket 51 is lowered to drive the trimming taking-out mechanism to be lowered, so that the pressing cover 512 presses the sealing ring, and at this time, the first trimming blade 531 and the second trimming blade 532 are respectively located at two sides of the sealing ring, the cleaning plate 541 moves upward against the fourth spring 543 to separate the first bevel gear 524 from the second bevel gear 523, the third motor 56 is started to drive the third bevel gear 522 to rotate, so as to drive the fourth bevel gear 521 to rotate, and simultaneously drive the fourth gear 525 to rotate, so as to drive the fifth gear 526 to rotate, so as to drive the first trimming blade 531 to rotate, so as to drive the fifth bevel gear 527 to rotate, so as to drive the sixth bevel gear 528 to rotate via the seventh bevel gear 529, and the rotation direction of the fifth bevel gear 527 is opposite, so as to drive the second trimming blade 532 to rotate in the opposite direction, so that the first trimming blade 531 and the second trimming blade 532 can perform trimming on the sealing ring, and at the same time, during the rotation of the first trimming blade 531, the piston 551 is pushed to move downward against the fifth spring 552, so that the hole on the sealing ring is blocked by the sealing ring, so that the air pressure in the first trimming blade 515 and the air channel 511 is less than that the air pressure in the first trimming blade 511, the air pressure of the first trimming blade 511 is reduced to be reduced after the first trimming cover 511, and the atmospheric pressure control cover 511, the atmospheric pressure of the first trimming blade 511,

the control bracket 51 rises until the first bevel gear 524 is meshed with the second bevel gear 523, the cleaning plate 541 is tightly attached to the first die 21, the third motor 56 is started to rotate, the cleaning plate 541 is driven to swing back and forth, the rubber cut off by trimming is cleaned,

then the bracket 51 is controlled to continuously rise, when the bracket 51 rises to a sufficient height, the first electric pole 23 is controlled to extend out, the second die 22 is driven to overturn, the sliding block 72 is pushed to descend by the first protrusion 221, the positioning pin 74 slides along the second spiral groove 714 under the action of the third boss 717, the rotating roller 71 is driven to rotate 180 degrees, the positioning pin 74 passes through the second boss 716 to enter the first straight groove 711 under the action of the seventh spring 75, the trimming and taking-out mechanism is driven to the left side, then the first electric pole 23 is controlled to stretch and retract, the second die 22 overturns, the sliding block 72 rises under the action of the sixth spring 73, the positioning pin 74 slides along the first straight groove 711 under the action of the second boss 716 and passes over the first boss 715 to enter the second straight groove 713,

when the trimming and taking-out mechanism comes to the left side, the control bracket 51 rises to the highest point, so that the feeler lever 611 and the bracket body 34 are touched, the one-way valve 61 is opened, the air pressure in the flow passage rises, the sealing member falls into the collection box 11, and the trimming and taking-out are completed.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (10)

1. A preparation method of a rubber sealing ring is characterized in that a processing device is used for processing a rubber strip, and the processing device comprises:

the collecting box is arranged at the lower end of the rack;

the hot-press forming mechanism is arranged on the rack and is used for heating and forming the rubber strips;

the overturning and blanking mechanism is arranged above the rack and is used for placing the rubber strips in the hot-pressing forming mechanism;

the trimming and taking-out mechanism is arranged above the rack and is used for taking out and trimming the sealing ring and putting the sealing ring into a collection box;

the transmission mechanism is arranged on the rack and used for driving the overturning blanking mechanism and the trimming removing mechanism to slide;

the switching mechanism is arranged on the rack and used for switching the overturning blanking mechanism and the trimming removing mechanism,

the preparation method of the rubber sealing ring comprises the following steps:

s1, feeding: placing rubber strips needed by preparing the sealing element in an overturning and discharging mechanism to finish feeding;

s2, placing rubber strips: the transmission mechanism is utilized to drive the overturning and blanking mechanism to push the two rubber strips into the hot-pressing forming mechanism end to end, so that the placement of the rubber strips is completed, and the transmission mechanism is controlled to ascend to the highest point;

s3, hot press forming and mechanism switching of the rubber sealing ring: a hot-press forming mechanism is used for manufacturing a rubber sealing ring, and the switching mechanism is used for driving the trimming and taking-out mechanism to rotate 180 degrees to the right side so as to complete mechanism switching;

s4, trimming and taking out: controlling a transmission mechanism to drive a trimming and taking-out mechanism to descend, trimming and cutting the sealing ring by using the trimming and taking-out mechanism, cleaning the trimmed and cut rubber, resetting the trimming and taking-out mechanism by using the transmission mechanism and a switching mechanism, and dropping the sealing ring in a collection box by using the trimming and taking-out mechanism;

s5, circulating work: the sealing elements can be continuously produced by continuously and circularly carrying out the steps S2-S4 without manual placement, taking out and trimming, and the method is convenient and quick and has no artificial danger.

2. The method for preparing a rubber sealing ring according to claim 1, wherein the transmission mechanism comprises a support, a first motor, a sliding rod, a screw rod and a support body, one side of the support is connected with the turnover discharging mechanism, the other side of the support is connected with the trimming taking-out mechanism, the support body is arranged on the frame, the sliding rod is fixedly connected with the frame and the support body, the screw rod is in threaded connection with the support, the sliding rod is in sliding connection with the support and is arranged in parallel with the screw rod, the motor is fixedly arranged on the support body, an output end of the motor is connected with the screw rod, and the motor can drive the screw rod to rotate so as to drive the support to slide up and down along the sliding rod, so that the turnover discharging mechanism and the trimming taking-out mechanism are driven to move up and down.

3. The method for preparing a rubber sealing ring according to claim 2, wherein the overturning and blanking mechanism comprises a housing, a second motor, a first gear and a second gear, the housing is rotatably sleeved in the support, the housing is provided with the second gear, the second motor is fixedly arranged on the support, the output end of the second motor is connected with the first gear, the first gear is connected with the second gear, the second motor can drive the first gear to rotate, so that the second gear is driven to rotate, the housing is driven to rotate, the overturning and blanking mechanism can rotate 180 degrees integrally, the overturning and blanking mechanism comprises a second electric pole, a baffle, a push plate, a third spring and an arc plate, a trough is further arranged on the housing, rubber strips are placed in the trough, the two ends of the second electric pole are fixedly connected with the push plate and the housing respectively, the push plate is slidably connected with the housing, one side of the push plate contacting with the rubber strips can deform, the baffle is slidably connected with the push plate and abutted against the push plate, the two ends of the third spring are abutted against the push plate and the baffle, the arc plate is fixedly arranged on the housing, the second electric pole is driven to contract the baffle rightwards, the second electric pole, the baffle can drive the push plate to move, the push plate to push the rubber strips to move, and block the outlet of the third spring to block the rubber strips.

4. The method for preparing a rubber sealing ring according to claim 3, wherein the turnover blanking mechanism further comprises a second rack, a third gear, a first rack, a blanking plate, a first spring and a second spring, the second rack, the third gear, the first rack, the blanking plate, the first spring and the second spring are all arranged in the housing, the second rack is connected with the arc-shaped plate and the housing in a sliding mode, the length of the lower end of the second rack exceeds that of the housing, the second gear is simultaneously meshed with the first rack and the second rack, the first rack and the second rack are arranged in parallel, the blanking plate is connected with the first rack in a sliding mode, the lower end of the blanking plate is abutted against the rubber strip, the first spring is abutted against the first rack at the same time, the second spring is abutted against the housing and the first rack at the same time, the second rack can drive the gear to rotate, further drive the first rack to move downwards to compress the first spring and the second spring, and when the push plate retracts leftwards, the first spring can push the rubber strip out.

5. The method for preparing a rubber sealing ring according to claim 4, wherein the hot-press forming mechanism comprises a first mold, the first mold is fixedly arranged on the frame, the first mold is provided with a first groove and a second groove, so that the two rubber strips can be placed end to end, in step S2, the first motor is controlled to rotate to drive the screw rod to rotate, so as to drive the bracket to slide on the slide rod, so that the bracket drives the turnover blanking mechanism to descend, the second electric rod contracts to push the push plate to move rightwards, the baffle plate is driven to slide rightwards under the action of a third spring to block the rubber strips at the outlet of the trough, the push plate pushes the rubber strips to move towards the arc-shaped plate and deform into an arc shape until the rubber strips are tightly attached to the arc-shaped plate, and the rubber strips are made into a semicircular shape under the action of the push plate and the arc-shaped plate, when the second rack is contacted with the first mold, the second rack drives the third gear to rotate, the first rack is driven to move downwards through the third gear, so that the second spring and the first spring are compressed, when the shell descends to a certain height, the electric pole is controlled to extend out to enable the push plate to be retracted leftwards, the rubber strips are loosened, the blanking plate is pushed under the action of the first spring to push the rubber strips into the first groove, the placement of one rubber strip is achieved, then the support is controlled to ascend, the second motor is started to drive the first gear to rotate, so that the second gear is driven to rotate, the whole overturning and blanking mechanism is further driven to rotate 180 degrees, then the support is controlled to descend, similarly, the next rubber strip can be placed in the second groove, the two rubber strips are opposite end to end, the placement of the rubber strip is completed, and after the placement is completed, the support is controlled to ascend to the highest point.

6. The method for manufacturing a rubber sealing ring according to claim 5, wherein the thermoforming mechanism further includes a second mold and a first electric pole with a telescopic structure, the second mold is rotatably connected to the first mold, one end of the first electric pole is hinged to the frame, the other end of the first electric pole is hinged to the second mold, the first electric pole is controlled to be telescopic to control the second mold to turn over so as to cover the first mold, in step S3, after the rubber strip is completely placed, the first electric pole is controlled to extend to push the second mold to turn over so as to cover the first mold, and the first mold and the second mold are heated so as to melt the rubber strip and further change into a shape inside the mold to manufacture the rubber sealing ring, the second mold top is further provided with a first protrusion, the second mold top is further provided with a switching mechanism including a rotating roller, a sliding block, a sixth spring, a seventh spring and a positioning pin, the rotating roller is rotatably sleeved outside the sliding rod and fixedly connected to the frame, the sliding roller is slidably disposed on the frame, the sliding block abuts against the sliding block and the second frame, the sliding mechanism is provided with a sliding positioning groove 180, and the sliding positioning pin is rotatably disposed on the frame to drive the sliding roller and drive the sliding positioning pin to drive the sliding groove 180 to move the sliding groove.

7. The method for preparing a rubber sealing ring according to claim 6, wherein the rotating roller is provided with a first straight groove, a second straight groove, a first spiral groove and a second spiral groove, a first boss is arranged at the joint of the first straight groove and the first spiral groove, a second boss is arranged at the joint of the first straight groove and the second spiral groove, a third boss is arranged at the joint of the second straight groove and the second spiral groove, a fourth boss is arranged at the joint of the second straight groove and the first spiral groove, the slider moves downwards to drive the positioning pin to slide in the first straight groove and slide along the first spiral groove under the action of the first boss so as to drive the rotating roller to rotate, the positioning pin can cross over the fourth boss to enter the second straight groove under the action of a seventh spring, and the positioning pin can slide upwards along the second straight groove to pass over the third boss to enter the second spiral groove, in step S3, when the second mold is turned over, the first protrusion pushes the second protrusion to drive the slide block to overcome the sixth spring to move downward, so as to drive the positioning pin to slide in the first straight groove, under the action of the first boss, the positioning pin enters the first spiral groove and drives the rotating roller to rotate 180 degrees, so that the left-side removing mechanism comes to the right, under the action of the seventh spring, the positioning pin crosses the fourth boss to enter the second straight groove, so as to complete mechanism switching, after the preparation of the sealing ring is completed, the first electric pole is controlled to contract, so as to drive the second mold to turn over and open, the first protrusion is separated from the second protrusion, under the action of the sixth spring, the slide block is pushed to rise, the positioning pin is driven to move upward along the second straight groove, and enters the second spiral groove under the action of the third boss, and finishing the action.

8. The method for preparing a rubber sealing ring according to claim 7, wherein the trimming-removing mechanism comprises a pressing cover, a first trimming blade, a second trimming blade, a third motor, a third bevel gear, a fourth bevel gear, a fifth bevel gear, a sixth bevel gear, a seventh bevel gear, a fourth gear and a fifth gear, the pressing cover is fixedly arranged on the bracket, the first trimming blade and the second trimming blade are rotatably arranged on the bracket and are respectively arranged on two sides of the pressing cover, the third motor is fixedly arranged on the bracket, the third bevel gear is connected with an output end of the third motor, the fourth bevel gear is arranged on the bracket and is engaged with the third bevel gear, the fourth gear and the fourth bevel gear are coaxially arranged and are engaged with each other, the fifth gear is rotatably arranged on the bracket and is fixedly connected with the first trimming blade, the fifth gear is rotatably arranged on the bracket and is rotatably connected with the seventh trimming blade, the sixth bevel gear is rotatably connected with the sixth trimming blade, the pressing cover is rotatably connected with the sixth bevel gear, the third trimming blade and the fourth bevel gear are rotatably arranged on the bracket and are rotatably connected with the fourth bevel gear, and are rotatably connected with the third trimming blade and the fourth bevel gear.

9. The method for preparing a rubber sealing ring according to claim 8, wherein the trimming removing mechanism further includes a fifth spring, a piston, and a check valve, the pressing cover has a first flow channel, a first outlet, and a cavity therein, the first outlet can contact the sealing ring, the support has a second flow channel and a second outlet therein, the first flow channel is connected to one end of the first outlet, the cavity and one end of the second flow channel, the cavity has a third outlet thereon, the check valve is connected to the other end of the second flow channel and the second outlet, the piston is slidably disposed in the cavity and has one end extending out of the third outlet, the fifth spring abuts against the cavity wall and the piston at the same time, the first trimming knife can push the piston against the fifth spring, and air is discharged from the second outlet through the first flow channel, the second flow channel and the check valve, and the sealing ring is sucked on the pressing cover due to the fact that the external air pressure is greater than the internal pressure of the first flow channel.

10. The method for preparing a rubber sealing ring according to claim 9, wherein the check valve comprises a valve core, a valve seat, a feeler lever and an eighth spring, the feeler lever is arranged in the second flow passage, one end of the feeler lever is fixedly connected with the valve core, the other end of the feeler lever extends out of the second flow passage, the eighth spring is simultaneously abutted against the valve seat and the valve core, when the feeler lever is abutted against a frame body, the valve core can open the check valve against the spring, the trimming and taking-out mechanism further comprises a cleaning plate, a fourth spring, a first bevel gear and a second bevel gear, the cleaning plate is slidably arranged on the frame, the fourth spring is simultaneously abutted against the cleaning plate and the frame, the first bevel gear is fixedly arranged on the cleaning plate, the second bevel gear is arranged on the frame and the first bevel gear is meshed with the second bevel gear, the second bevel gear is meshed with the fourth bevel gear, the first die can push the cleaning plate to overcome the fourth spring to move upwards to separate the first bevel gear from the second bevel gear, in step S4, the bracket is controlled to descend to drive the trimming and taking-out mechanism to descend so that the pressing cover presses the sealing ring, the first trimming cutter and the second trimming cutter are respectively positioned at two sides of the sealing ring, the cleaning plate overcomes the fourth spring to move upwards to separate the first bevel gear from the second bevel gear, the third motor is started to drive the third bevel gear to rotate and further drive the fourth bevel gear to rotate and simultaneously drive the fourth gear to rotate and further drive the fifth gear to rotate to drive the first trimming cutter to rotate and further drive the fifth bevel gear to rotate, the seventh bevel gear drives the sixth bevel gear to rotate, and the rotation direction is opposite to that of the fifth bevel gear, and then the second trimming knife is driven to reversely rotate, so that the first trimming knife and the second trimming knife can trim and cut the sealing ring, meanwhile, in the rotating process of the first trimming knife, the piston is pushed to overcome the fifth spring to move downwards, because the hole on the pressing cover is blocked by the sealing ring, the air in the first flow passage and the second flow passage is discharged through the one-way valve, the air pressure in the first flow passage is smaller than the atmospheric pressure, the sealing ring is sucked on the pressing cover, and after trimming is finished, the first trimming knife and the second trimming knife are controlled to reset,

the bracket is controlled to rise until the first bevel gear is meshed with the second bevel gear, the cleaning plate is tightly attached to the first die, the third motor is started to rotate, the cleaning plate is further driven to swing back and forth, the rubber which is trimmed and cut is cleaned,

then the bracket is controlled to continuously rise, when the bracket rises to a sufficient height, the first electric pole is controlled to extend out to drive the second die to turn over, the first bulge pushes the slide block to descend, the positioning pin slides along the second spiral groove under the action of the third boss to drive the rotating roller to rotate 180 degrees, the positioning pin passes through the second boss to enter the first straight groove under the action of the seventh spring to drive the trimming and taking-out mechanism to go to the left side, then the first electric pole is controlled to stretch and retract, the second die turns over, the slide block rises under the action of the sixth spring, the positioning pin slides along the first straight groove under the action of the second boss and passes through the first boss to enter the second straight groove,

when the trimming and taking-out mechanism comes to the left side, the support is controlled to ascend to the highest point, so that the feeler lever is touched with the support body, the one-way valve is opened, the air pressure in the flow channel is increased, the sealing element falls into the collecting box, and trimming and taking-out are completed.

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