CN111894845B - Sealing mechanism for automobile coating glue supply servo quantifying machine and assembling and disassembling method thereof - Google Patents

Abstract

The invention relates to a sealing mechanism for an automobile coating glue supply servo dosing machine and a dismounting method thereof, wherein the sealing mechanism comprises a sealing sleeve, an inner side wall sealing sleeve is arranged on a plunger, and the end surfaces at two ends and the peripheral side wall of the sealing sleeve are in sealing fit with an installation groove arranged on the inner side wall of a sealing cavity; the mounting groove extends along the central axis direction of the sealing cavity and extends from the middle position of the front end cover to the middle front position of the cylinder body; the inner side wall of the sealing sleeve is provided with a first Stent seal and a second Stent seal which are arranged at intervals along the central axis direction of the sealing cavity body at positions relatively close to the cylinder body; a groove for dismounting and mounting with an opening end facing the cylinder body is arranged on the peripheral wall of the outer side of the sealing sleeve corresponding to the position of the cylinder body; the invention also correspondingly discloses a disassembling method and an assembling method of the sealing mechanism. The sealing mechanism and the dismounting method thereof can give consideration to the sealing effect and the dismounting efficiency during gluing, and can better assist in improving the using effect of the coating glue supply servo quantifying machine.

Description

Sealing mechanism for automobile coating glue supply servo quantifying machine and assembling and disassembling method thereof

Technical Field

The invention relates to the technical field of automobile glue supply sealing, in particular to a sealing mechanism for an automobile coating glue supply servo quantifying machine and a disassembling and assembling method thereof.

Background

In the existing automobile production process, in order to ensure the requirements of sealing, shock resistance, noise reduction, corrosion resistance, comfort and the like of an automobile, the automobile body needs to be coated with glue (glue for the automobile body is divided into glue for welding and glue for coating). In recent years, various glues are mainly coated by robots and manually supplemented by spot welding, so that precise quantitative equipment is key equipment for gluing. The quantitative mode of the existing precise quantitative equipment mainly comprises precise gear quantification, pressure flow closed-loop control quantification, a servo quantifying machine and the like, wherein the servo quantifying machine has the characteristics of quick response, high instantaneous flow precision, wide viscosity range and the like, and is widely applied to welding and coating workshops.

The existing servo quantifying machine can be mainly divided into a piston type and a plunger type according to the structure, wherein the plunger type servo quantifying machine is more common and mainly comprises the following components: servo motor, reduction gear, lead screw, export shut-off valve, control system to and front end housing, cylinder body, rear end housing, plunger (piston rod) and sealing mechanism. The front end cover, the cylinder body and the rear end cover are coaxially and fixedly installed in sequence, and a sealing cavity which extends along the axis of the front end cover, the cylinder body and the rear end cover and is adaptive to the outer diameter of the plunger is formed among the front end cover, the cylinder body and the rear end cover. When supplying to glue, the periphery lateral wall of plunger and seal chamber's inside wall laminating, and the plunger is through making the flexible "piston motion" of making a round trip in seal chamber and control the business turn over of sizing material, and sealing mechanism sets up between plunger and seal chamber for guarantee the leakproofness between plunger and seal chamber.

The sealing mechanism of the existing servo quantifying machine is mainly of a split structure and comprises a sealing component A and a sealing component B which are arranged on end covers (a front end cover and a rear end cover) along a pressure reduction direction. Wherein, the concrete structure of current sealing mechanism is as follows: the sealing component A adopts a structure of 'sealing sleeve + dustproof ring + Style seal + guide belt', and the sealing component B adopts a structure of 'sealing sleeve + Style seal + guide belt'.

In the actual gluing process, the viscosity range of glue used in a welding workshop and a coating workshop is wide and generally ranges from tens of thousands to millions of mPa.s, and the plunger piston and the sealing mechanism are matched in a dynamic sealing mode, so that the sealing performance of the plunger piston and the sealing mechanism becomes a key factor influencing the use effect (service life) of the servo quantifying machine. However, the conventional sealing mechanism has the following problems in practical use:

1) when the glue is coated (the plunger does 'piston motion'), the position of the sealing component A of the sealing mechanism can bear extremely high pressure, and the structure of the sealing sleeve, the dust ring, the Style seal and the guide belt of the sealing component A is easy to have the problem of 'pressure instability' in a high-pressure state (caused by a single Style seal structure), so that the sealing mechanism is easy to leak glue material when the glue is coated, and the sealing effect of the existing sealing mechanism is poor when the glue is coated;

2) the split type structure of the existing sealing mechanism has the problem of complex structure, so that when the sealing mechanism is disassembled and installed (the sealing mechanism is maintained or replaced), the first sealing assembly between the front end cover and the cylinder body and the second sealing assembly between the cylinder body and the rear end cover need to be disassembled or installed respectively, the disassembling and installing processes need to be operated for many times, the disassembling and assembling processes of the sealing mechanism are very complicated, and the disassembling and assembling efficiency of the existing sealing mechanism is low.

The problems of poor sealing effect and low disassembly and assembly efficiency in the gluing process of the conventional sealing mechanism can further influence the use effect of the coating glue supply servo quantifying machine; therefore, how to provide a sealing mechanism for servo dosing machine is glued in application confession to give consideration to sealed effect and dismouting efficiency when sealing mechanism rubber coating, and the problem that the result of use that supplementary promotion application confession glued servo dosing machine is the urgent need to be solved.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide the sealing mechanism for the servo dosing machine is glued in automobile coating confession that can compromise sealed effect and dismouting efficiency when the rubber coating to supplementary result of use that promotes the coating confession and glue the servo dosing machine.

In order to solve the technical problems, the invention adopts the following technical scheme:

a sealing mechanism for an automobile coating glue supply servo dosing machine comprises a sealing sleeve, wherein an inner side wall sealing sleeve is arranged on a plunger, and the end faces at two ends and the peripheral side wall of the sealing sleeve are in sealing fit with a mounting groove arranged on the inner side wall of a sealing cavity; the mounting groove extends along the central axis direction of the sealing cavity and extends from the middle position of the front end cover to the middle front position of the cylinder body;

the position, relatively close to the cylinder body, on the inner side wall of the seal sleeve is provided with a first Stent seal and a second Stent seal which are arranged at intervals along the central axis direction of the seal cavity and are respectively matched with the peripheral side wall of the plunger in a sealing way; and a groove with an opening end facing the cylinder body for dismounting is arranged on the peripheral wall of the outer side of the sealing sleeve corresponding to the cylinder body.

In the actual glue supplying process, when the plunger retracts towards the outside of the sealing cavity (at the moment, a feeding valve port on the cylinder body is controlled to be opened, and a discharge port on the rear end cover is controlled to be closed), the sealing cavity generates negative pressure due to the fact that the sealing volume is increased, and high-viscosity glue can be sucked in; on the contrary, when the plunger does extension movement towards the inside of the sealed cavity (at the moment, the feeding valve port on the cylinder body is controlled to be closed, and the discharging valve port on the rear end cover is controlled to be opened), the sealed cavity extrudes the high-viscosity rubber material from the discharging port due to the fact that the sealed volume is reduced; the high-viscosity sizing material is quantitatively coated by the logic circulation motion.

When the rubber coating (the plunger is done to retract, when stretching out the motion promptly), the part that the seal cover is close to the cylinder body relatively can bear extremely strong high pressure (lead to "pressure unstability" very easily), consequently, this scheme is equipped with (along seal chamber's axis) coaxial interval arrangement's first steckel seal and second steckel seal in the position of being close to the cylinder body relatively on the seal cover, with the high pressure that can better bear this position through the structure of two steckel seals, thereby the problem of "pressure unstability" that produces when can avoiding the high pressure, and then can avoid the sizing material in the seal chamber to take place to leak, sealed effect when making can promote sealing mechanism rubber coating. And, constitute the sealing mechanism of integral type by seal cover and two steckel in this scheme: when the sealing mechanism is disassembled, only the rear end cover and the cylinder body are required to be disassembled correspondingly (no sealing assembly is arranged between the rear end cover and the cylinder body, and further disassembly is not required), and then the sealing sleeve is disassembled by a puller for disassembly and assembly, so that the disassembly of the sealing mechanism can be completed; when the sealing mechanism is installed, only the sealing sleeve needs to be correspondingly sleeved on the plunger, then the cylinder body and the rear end cover are sequentially sleeved (no sealing component is arranged between the rear end cover and the cylinder body, step-by-step installation is not needed), and the installation of the sealing mechanism can be completed through the fixation of the fastening bolt. It is thus clear that the sealing mechanism of integral type just can accomplish through one-time operation in this scheme and dismantle or install, and only need to dismantle between front end housing and the seal cover or install can, and need not dismantle or install between cylinder body and front end housing (seal cover) and between rear end cap and the cylinder body alone to the dismouting step of sealing mechanism can be simplified, in order to promote sealing mechanism's dismouting efficiency. Consequently, the sealing effect and the dismouting efficiency when the rubber coating can be compromise to sealing mechanism for the servo dosing machine of glue is supplied in car application in this scheme to supplementary promotion application that can be better supplies the result of use of the servo dosing machine of glue.

Preferably, a third steve seal which is coaxially arranged with the first steve seal and the second steve seal and is in sealing fit with the peripheral side wall of the plunger is arranged on the inner side wall of the sealing sleeve, which is relatively close to the front end cover.

During the actual glue supply process, the part of the sealing sleeve relatively close to the front end cover can also bear pressure (but the pressure in the part is smaller than that of the part of the sealing sleeve relatively close to the cylinder body). Therefore, in the scheme, a third Stent seal which is coaxially arranged with the first Stent seal and the second Stent seal is arranged on the inner side wall of the sealing sleeve relatively close to the front end cover; on one hand, the third Stent seal can well bear the pressure of the part of the seal sleeve, which is relatively close to the front end cover, so as to further ensure the sealing effect of the sealing mechanism; on the other hand, the pressure of this department (the seal cover is close to the part of front end housing relatively) is less, and a steckel seal is accomplished and is born this pressure, and can not appear the problem of "pressure unstability", this scheme is guaranteeing under the prerequisite of the sealed effect of sealing mechanism promptly, has further simplified sealing mechanism's structure and manufacturing cost, not only is favorable to simplifying the step that sealing mechanism dismantled and installed, still is favorable to sealing mechanism's actual production and use to can assist the result of use that promotion application confession glued servo ration machine.

Preferably, a dustproof ring which is coaxially arranged at intervals with the third steve seal and is in sealing fit with the peripheral side wall of the plunger is arranged on the inner side wall of the sealing sleeve and between the front end cover and the third steve seal.

In the actual glue supply process, the position of the sealing sleeve relatively close to the front end cover is closer to the external environment, and external dust, impurities and the like easily enter the sealing cavity. Therefore, the dustproof ring is arranged at a position which is relatively close to the front end cover relative to the third Stent seal, so that the dustproof effect of the sealing mechanism can be better realized, and the use effect of the coating glue supply servo quantifying machine can be improved in an auxiliary mode; and the installation position of the dust ring (located between the front end cover and the third Stent seal) is more favorable for the stable installation of the dust ring (if the installation position is at the end part or the edge of the front end cover, the dust ring is easy to fall off when the plunger makes telescopic motion), and is also favorable for assisting in improving the use effect of the coating glue supply servo quantifying machine.

Preferably, a dustproof ring which is coaxially arranged at intervals with the third steve seal and is in sealing fit with the peripheral side wall of the plunger is arranged on the inner side wall of the sealing sleeve and between the front end cover and the third steve seal.

In the actual glue supplying process, the glue material may contain "abrasive materials" (i.e. sharp and hard materials), and the telescopic motion of the plunger may cause the "abrasive materials" to cause additional wear to the sealing components such as the sealing sleeve and the steckel seal of the sealing mechanism, thereby affecting the service life of each sealing component of the sealing mechanism, and causing the effect of the sealing mechanism in assisting the coating and glue supplying servo dosing machine to work to be poor. To this problem, in this scheme, the position that lies in between dust ring and the third stone seal on the seal cover inside wall has set up first guidance tape, lead to the concertina movement of plunger through first guidance tape, in order to reduce the radial disturbance of plunger, can weaken "abrasive material" promptly to the wearing and tearing of each sealing member of sealing mechanism, thereby be favorable to promoting sealing mechanism's life, in order to make the supplementary application that sealing mechanism can be better supply to glue servo proportioning machine work, the application that can assist the promotion promptly supplies to glue servo proportioning machine's working effect.

Preferably, a second guide belt which is coaxially arranged at intervals with the first steve seal and the second steve seal and is in sealing fit with the peripheral side wall of the plunger is arranged on the inner side wall of the sealing sleeve and is positioned between the first steve seal and the second steve seal.

In the actual glue supplying process, the glue stock may contain "abrasives" (i.e. sharp and hard materials), and the telescopic motion of the plunger may cause the "abrasives" to cause additional wear to components such as a sealing sleeve and a steckel seal of the sealing mechanism, so as to affect the service life of each sealing component of the sealing mechanism, and the effect of the sealing mechanism in assisting the coating and glue supplying servo dosing machine to work is poor. To this problem, in this scheme, the position that lies in between first stet seal and the second stet seal on the seal cover inside wall has set up the second guidance tape, can carry out further direction to the concertina movement of plunger through the second guidance tape promptly, in order to further reduce the radial disturbance of plunger, can further weaken "abrasive material" promptly to the wearing and tearing of each sealing member of sealing mechanism, thereby more be favorable to promoting sealing mechanism's life, so that sealing mechanism can be better supplementary application supplies to glue servo proportioning machine work, the application that can be better supplementary promotion supplies to glue servo proportioning machine's working effect promptly.

Preferably, the position of the middle part of the peripheral side wall of the sealing sleeve, corresponding to the softener interface arranged on the front end cover, is provided with a softener conveying groove, one end of the softener conveying groove is communicated with the softener interface, and the other end of the softener conveying groove extends to the direction of the inner side wall of the sealing sleeve and is communicated with the sealing cavity

In the actual glue supply process, the plunger is very tightly contacted with the sealing sleeve, each Stent seal and other parts, so that the plunger can generate good sealing with each sealing part in the telescopic motion process; however, a very small amount of glue may leak out in the long-term movement process, and if the leaked glue is in contact with air, the leaked glue is easy to cure, and when the cured glue is subjected to the movement action, the abrasion of each sealing part is easy to accelerate; to this problem, can keep apart atmosphere and sealing member through the softener among the prior art, can guarantee to glue and be the flow state for a long time and not solidify even there is the seepage of minute glue when coming out, consequently, the isolation and the lubricated effect of softener are in certain degree the service life of seal structure and the effect of supplementary application confession gluey servo dosing machine work. In this scheme, arrange the softener delivery chute in the middle part position of seal cover, be favorable to the plunger to drive the softener and carry towards each seal part at both ends when concertina movement to can assist the softening effect that promotes the softener, with the effect that can assist life who promotes seal structure and supplementary application supply to glue servo proportioning machine work, can assist the work effect that promotes the application and supply to glue servo proportioning machine promptly.

Preferably, the end part of the seal sleeve corresponding to one end of the front end cover is provided with a first seal ring which is in seal fit with the inner side wall of the mounting groove; and a second sealing ring which is in sealing fit with the inner side wall of the mounting groove is arranged on the peripheral side wall of the sealing sleeve, corresponds to the front end cover and is closer to the cylinder body relative to the softening agent conveying groove.

In the actual glue supply process, the isolation and lubrication effects of the softening agent determine the service life of the sealing mechanism and the effect of the auxiliary coating glue supply servo dosing machine in a certain degree, and therefore, the sealing effect of the softening agent is also important, because the isolation and lubrication effects of the softening agent can be influenced once the softening agent leaks. In this scheme, set up first sealing washer and second sealing washer between seal cover and front end housing to can promote the sealed effect between seal cover and front end housing, thereby can promote the sealed effect between softener conveyer trough and softener interface, this is favorable to promoting the isolation and the lubricated effect of softener, can assist life who promotes sealing mechanism promptly and the effect that supplementary application supplied the work of gluey servo ration machine.

Preferably, the end part of the sealing sleeve corresponding to one end of the cylinder body is arranged on a third sealing ring in sealing fit with the inner side wall of the mounting groove; and a fourth sealing ring in sealing fit with the inner side wall of the mounting groove is arranged on the peripheral side wall of the sealing sleeve, corresponding to the cylinder body and opposite to the position, far away from the front end cover, of the dismounting groove.

In the actual glue supply process, the sealing effect between the sealing sleeve and the cylinder body can be further improved through the third sealing ring and the fourth sealing ring, so that the sealing effect of the sealing mechanism can be improved in an auxiliary mode, the effect of the glue entering and exiting of the sealing cavity can be improved in an auxiliary mode, and the working effect of the servo quantifying machine for glue supply in an auxiliary lifting mode, which is better for the sealing mechanism, is facilitated.

The invention further discloses a method for disassembling the sealing mechanism for the automobile coating glue supply servo dosing machine, which is implemented based on the sealing mechanism, and when the sealing mechanism is disassembled, the disassembling process comprises the following steps:

the method comprises the following steps: dismantling a fixing bolt which is arranged for connecting the front end cover, the cylinder body and the rear end cover, and correspondingly dismantling the rear end cover and the cylinder body to separate the cylinder body from the front end cover and a sealing sleeve of the sealing mechanism, thereby exposing a groove for dismantling on the sealing sleeve;

step two: correspondingly embedding a puller claw of the puller for dismounting into a dismounting groove on the sealing sleeve, and abutting a puller mandrel of the puller for dismounting against the plunger;

step three: and rotating a puller handle of the puller for dismounting so that the sealing sleeve moves towards the direction far away from the front end cover along the central axis of the plunger until the sealing sleeve is completely separated from the front end cover and the plunger.

In this scheme, when dismantling sealing mechanism (maintenance or change), only need to correspond dismantlement rear end cap and cylinder body (do not set up seal assembly between rear end cap and cylinder body, need not further demolish), then utilize the dismouting to correspond with the jack catch that draws the horse in the groove for the dismouting on the embedding seal cover, and will draw horse mandrel and plunger butt, and clockwise rotation draws horse handle, make the seal cover move towards the direction of keeping away from the front end housing along the axis of plunger (the plunger is fixed motionless this moment), break away from completely with front end cap and plunger until the seal cover can accomplish sealing mechanism's dismantlement. In the scheme, the sealing mechanism can be disassembled only through one-time operation, and only the front end cover and the sealing sleeve need to be disassembled, and the cylinder body and the front end cover (sealing sleeve) and the rear end cover and the cylinder body do not need to be disassembled independently, so that the disassembling step of the sealing mechanism can be simplified, and the disassembling efficiency of the sealing mechanism can be improved.

The invention further discloses an installation method of the sealing mechanism for the automobile coating glue supply servo quantifying machine, which is implemented based on the sealing mechanism, and the installation process comprises the following steps when the sealing mechanism is installed:

step A: correspondingly sleeving a sealing sleeve on the plunger, and enabling the front end of the sealing sleeve to correspond to the mounting groove on the front end cover;

and B: the cylinder body is correspondingly sleeved at the rear end position of the sealing sleeve, and the rear end cover is correspondingly sleeved at the rear end position of the cylinder body;

and C: the arranged fixing bolts sequentially penetrate through the rear end cover, the cylinder body and the front end cover and are screwed, so that the rear end cover, the cylinder body and the sealing sleeve move towards the front end cover along the central axis of the plunger until the front end of the sealing sleeve is in close contact with the mounting grooves in the front end cover, the cylinder body and the sealing sleeve are in close contact with the rear end of the cylinder body and the rear end of the cylinder body.

In the scheme, when the sealing mechanism is installed (maintained or replaced), only the sealing sleeve is correspondingly sleeved on the plunger, then the cylinder body and the rear end cover are sequentially sleeved (no sealing component is arranged between the rear end cover and the cylinder body, and independent step-by-step installation is not needed), and the rear end cover, the cylinder body and the sealing sleeve are driven by the fixing bolt to move to the position between the front end position of the sealing sleeve and the installation groove on the front end cover, the position between the rear end position of the cylinder body and the sealing sleeve and the position between the rear end position of the rear end cover and the rear end position of the cylinder body along the plunger to complete installation of the sealing mechanism. The sealing mechanism in the scheme can be installed only through one-time operation, and only the front end cover and the sealing sleeve need to be installed, and the cylinder body and the front end cover (sealing sleeve) and the rear end cover and the cylinder body do not need to be installed independently, so that the installation steps of the sealing mechanism can be simplified, and the disassembly and assembly efficiency of the sealing mechanism can be improved.

Drawings

For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:

FIG. 1 is a front cross-sectional view of a seal mechanism according to a first embodiment;

FIG. 2 is a front sectional view of the front head cover, cylinder block and rear head cover as installed in accordance with one embodiment;

FIG. 3 is a front cross-sectional view showing a state in which the seal mechanism starts to be removed when the seal mechanism is removed according to the first embodiment;

FIG. 4 is a front sectional view showing a state during disassembly when the seal mechanism is disassembled according to the first embodiment;

FIG. 5 is a logical block diagram of a method of disassembling the seal mechanism according to the second embodiment;

fig. 6 is a logic block diagram of a sealing mechanism installation method according to the second embodiment.

Reference numerals in the drawings of the specification include: the device comprises a sealing cavity A, a mounting groove B, a fixing bolt C, a front end cover 1, a softener interface 11, a cylinder body 2, a rear end cover 3, a plunger 4, a sealing sleeve 5, a softener conveying groove 51, a groove 52 for dismounting, a first Stent seal 61, a second Stent seal 62, a third Stent seal 63, a dustproof ring 7, a first guide belt 81, a second guide belt 82, a first sealing ring 91, a second sealing ring 92, a third sealing ring 93, a fourth sealing ring 94, a puller 10 for dismounting, a puller claw 101, a puller mandrel 102 and a puller handle 103.

Detailed Description

The following is further detailed by the specific embodiments:

the first embodiment is as follows:

the embodiment discloses a sealing mechanism for an automobile coating glue supply servo quantifying machine.

The automobile coating glue supply servo quantifying machine comprises a servo motor, a speed reducer, a screw rod, an outlet shutoff valve, a control system, a front end cover 1, a cylinder body 2, a rear end cover 3, a plunger 4 (a piston rod) and a sealing mechanism, wherein the front end cover 1, the cylinder body 2 and the rear end cover 3 are sequentially and coaxially fixedly installed through a fixing bolt C, and a sealing cavity A which extends along the axis of the front end cover 1, the cylinder body 2 and the rear end cover 3 and is adaptive to the outer diameter of the plunger 4 is formed between the front end cover 1 and the cylinder body 2 and between the rear end cover 3. In addition, in the present embodiment, a puller 10 for dismounting is also disclosed, which is the same as a puller commonly used in the prior art, and includes a puller claw 101, a puller mandrel 102 and a puller handle 103.

As shown in fig. 1 and 2: a sealing mechanism for an automobile coating glue supply servo dosing machine comprises a sealing sleeve 5, wherein an inner side wall sealing sleeve 5 is arranged on a plunger 4, and the end surfaces at two ends and the peripheral side wall of the sealing sleeve 5 are in sealing fit with an installation groove B arranged on the inner side wall of a sealing cavity A; the mounting groove B extends along the central axis direction of the sealing cavity A and extends from the middle position of the front end cover 1 to the middle front position of the cylinder body 2;

a first Stent seal 61 and a second Stent seal 62 which are arranged at intervals along the central axis direction of the seal cavity A and are respectively matched with the peripheral side wall of the plunger 4 in a sealing way are arranged on the inner side wall of the seal sleeve 5 relatively close to the cylinder body 2; the seal cover 5 has a groove 52 for attachment/detachment, which has an opening end facing the cylinder 2, on the outer peripheral wall thereof at a position corresponding to the cylinder 2.

In the actual glue supplying process, when the plunger 4 retracts towards the outside of the sealing cavity A (at the moment, a feeding valve port on the cylinder body 2 is controlled to be opened, and a discharge port on the rear end cover 3 is controlled to be closed), the sealing cavity A generates negative pressure due to the fact that the sealing volume is increased, so that high-viscosity glue can be sucked in; on the contrary, when the plunger 4 extends towards the inside of the sealed cavity A (at the moment, the feeding valve port on the cylinder body 2 is controlled to be closed, and the discharging valve port on the rear end cover 3 is controlled to be opened), the sealed cavity A extrudes the high-viscosity sizing material from the discharging port due to the fact that the sealed volume is reduced; the high-viscosity sizing material is quantitatively coated by the logic circulation motion.

When gluing (namely, when the plunger 4 retracts and extends), the part of the sealing sleeve 5 relatively close to the cylinder body 2 can bear extremely high pressure (which easily causes "pressure instability"), therefore, the first stet seal 61 and the second stet seal 62 which are coaxially arranged at intervals are arranged on the sealing sleeve 5 relatively close to the cylinder body 2 (along the central axis of the sealing cavity a) so as to better bear the high pressure at the position through the structure of the two stet seals, thereby avoiding the problem of "pressure instability" generated during high pressure, further avoiding the leakage of the rubber material in the sealing cavity a, and further improving the sealing effect of the sealing mechanism during gluing.

As shown in fig. 3 and 4: the sealing mechanism of integral type has been constituteed by seal cover 5 and two steckel seals in this embodiment: when the sealing mechanism is disassembled, the rear end cover 3 and the cylinder body 2 only need to be disassembled correspondingly (no sealing assembly is arranged between the rear end cover 3 and the cylinder body 2, and further disassembly is not needed), and then the sealing sleeve 5 is disassembled by the puller 10 for disassembly and assembly, so that the disassembly of the sealing mechanism can be completed; when the sealing mechanism is installed, the sealing sleeve 5 is only required to be correspondingly sleeved on the plunger 4, then the cylinder body 2 and the rear end cover 3 are sequentially sleeved (no sealing component is arranged between the rear end cover 3 and the cylinder body 2, the step-by-step installation is not required), and the installation of the sealing mechanism can be completed through the fixation of the fastening bolt. It can be seen that, the sealing mechanism of integral type just can accomplish dismantlement or installation through once only operation in this embodiment, and only need to dismantle or install between front end housing 1 and the seal cover 5 can, and need not dismantle or install between cylinder body 2 and front end housing 1 (seal cover 5) alone, and between rear end housing 3 and the cylinder body 2 to the dismouting step of sealing mechanism can be simplified, with the dismouting efficiency that can promote sealing mechanism.

Therefore, the sealing mechanism for the automobile coating glue supply servo quantifying machine in the embodiment can give consideration to the sealing effect and the dismounting efficiency during gluing, so that the using effect of the coating glue supply servo quantifying machine can be better assisted and improved.

In the specific implementation process, a third stet seal 63 which is coaxially arranged with the first stet seal 61 and the second stet seal 62 and is in sealing fit with the peripheral side wall of the plunger 4 is arranged on the inner side wall of the sealing sleeve 5 relatively close to the front end cover 1.

During the actual glue supply process, the part of the sealing sleeve 5 relatively close to the front end cover 1 will also be subjected to pressure (but here the pressure will be less than the pressure of the part of the sealing sleeve 5 relatively close to the cylinder 2). Therefore, in the present embodiment, a third steve seal 63 arranged coaxially with the first steve seal 61 and the second steve seal 62 is provided on the inner side wall of the gland 5 relatively close to the front end cover 1; on one hand, the third steiner 63 can well bear the pressure of the part of the sealing sleeve 5 relatively close to the front end cover 1, so as to further ensure the sealing effect of the sealing mechanism; on the other hand, the pressure of this department (the part that the seal cover 5 is close to front end housing 1 relatively) is less, and a steckel seal is accomplished and is able to bear this pressure, and the problem of "pressure unstability" can not appear, this embodiment is guaranteeing under the prerequisite of the sealed effect of sealing mechanism promptly, has further simplified sealing mechanism's structure and manufacturing cost, not only is favorable to simplifying the step that sealing mechanism dismantled and installed, still is favorable to sealing mechanism's actual production and use to can assist the result of use that promotion application supplied gluey servo ration machine.

In the specific implementation process, a dustproof ring 7 which is coaxially arranged with the third stewart seal 63 at intervals and is in sealing fit with the peripheral side wall of the plunger 4 is arranged on the inner side wall of the sealing sleeve 5 between the front end cover 1 and the third stewart seal 63.

In the actual glue supply process, the position of the sealing sleeve 5 relatively close to the front end cover 1 is closer to the external environment, and external dust, impurities and the like easily enter the sealing cavity A. Therefore, in the embodiment, the dust ring 7 is arranged at a position relatively closer to the front end cover 1 than the third steckel seal 63, so that dust prevention of the sealing mechanism can be better realized, and the use effect of the coating glue supply servo quantifying machine can be improved in an auxiliary manner; moreover, the installation position of the dust ring 7 (located between the front end cover 1 and the third steckel seal 63) is more favorable for the stable installation of the dust ring 7 (if the installation position is at the end or edge of the front end cover 1, the dust ring is easy to fall off when the plunger 4 makes telescopic motion), and is also favorable for assisting in improving the use effect of the coating glue supply servo quantifying machine.

In the specific implementation process, a dustproof ring 7 which is coaxially arranged with the third stewart seal 63 at intervals and is in sealing fit with the peripheral side wall of the plunger 4 is arranged on the inner side wall of the sealing sleeve 5 between the front end cover 1 and the third stewart seal 63.

In the actual glue supplying process, the glue material may contain "abrasive materials" (i.e. sharp and hard materials), and the telescopic motion of the plunger 4 may cause the "abrasive materials" to cause additional wear to the sealing components such as the sealing sleeve 5 and the steckel seal of the sealing mechanism, thereby affecting the service life of each sealing component of the sealing mechanism, and causing the effect of the sealing mechanism in assisting the coating and glue supplying servo dosing machine to work to be poor. To this problem, in this embodiment, the position that is located between dust ring 7 and the third steckel 63 on the seal cover 5 inside wall has set up first guidance tape 81, lead to the concertina movement of plunger 4 through first guidance tape 81, in order to reduce the radial disturbance of plunger 4, can weaken "abrasive material" promptly to the wearing and tearing of each sealing member of sealing mechanism, thereby be favorable to promoting sealing mechanism's life, so that sealing mechanism can be better supplementary application supply to glue servo quantifying machine work, the coating that can assist the promotion supplies to glue servo quantifying machine's working effect promptly.

In the specific implementation process, a second guide belt 82 which is coaxially arranged at intervals with the first steve seal 61 and the second steve seal 62 and is in sealing fit with the peripheral side wall of the plunger 4 is arranged on the inner side wall of the sealing sleeve 5 between the first steve seal 61 and the second steve seal 62.

In the actual glue supplying process, the glue stock may contain "abrasive materials" (i.e. sharp and hard materials), and the telescopic motion of the plunger 4 may cause the "abrasive materials" to cause additional wear to the sealing sleeve 5, the steckel seal and other parts of the sealing mechanism, thereby affecting the service life of each sealing part of the sealing mechanism, and causing the effect of the sealing mechanism in assisting the coating and glue supplying servo dosing machine to work to be poor. To this problem, in this embodiment, the second guiding strip 82 is disposed at a position between the first stet seal 61 and the second stet seal 62 on the inner side wall of the sealing sleeve 5, that is, the second guiding strip 82 can further guide the telescopic motion of the plunger 4, so as to further reduce the radial disturbance of the plunger 4, that is, the abrasion of the abrasive to each sealing part of the sealing mechanism can be further weakened, thereby being more beneficial to prolonging the service life of the sealing mechanism, so that the sealing mechanism can better assist the work of the coating glue supply servo quantifying machine, that is, the work effect of the coating glue supply servo quantifying machine of the auxiliary lifting can be better.

In the specific implementation process, the position of the middle part of the peripheral side wall of the sealing sleeve 5 corresponding to the softener port 11 arranged on the front end cover 1 is provided with a softener conveying groove 51, one end of which is communicated with the softener port 11, and the other end of which extends to the direction of the inner side wall of the sealing sleeve 5 and is communicated with the sealing cavity A

In the actual glue supply process, the plunger 4 is very tightly contacted with the sealing sleeve 5, each Stent seal and other parts, so that the plunger 4 can generate good sealing with each sealing part in the telescopic motion process; however, a very small amount of glue may leak out in the long-term movement process, and if the leaked glue is in contact with air, the leaked glue is easy to cure, and when the cured glue is subjected to the movement action, the abrasion of each sealing part is easy to accelerate; to this problem, can keep apart atmosphere and sealing member through the softener among the prior art, can guarantee to glue and be the flow state for a long time and not solidify even there is the seepage of minute glue when coming out, consequently, the isolation and the lubricated effect of softener are in certain degree the service life of seal structure and the effect of supplementary application confession gluey servo dosing machine work. In this embodiment, arrange softener delivery chute 51 in the middle part position of seal cover 5, be favorable to plunger 4 to drive the softener to carry towards each seal part at both ends when concertina movement to can assist the softening effect that promotes the softener, with the effect that can assist life who promotes seal structure and supplementary application confession gluey servo dosing machine work, can assist the work effect that promotes the application confession gluey servo dosing machine promptly.

In the specific implementation process, the end part of the sealing sleeve 5 corresponding to one end of the front end cover 1 is provided with a first sealing ring 91 which is in sealing fit with the inner side wall of the mounting groove B; a second sealing ring 92 which is in sealing fit with the inner side wall of the mounting groove B is arranged on the outer side wall of the sealing sleeve 5, which corresponds to the front end cover 1 and is closer to the cylinder body 2 relative to the softening agent conveying groove 51. In this embodiment, the first seal ring 91 and the second seal ring 92 are both "O" shaped seal rings.

In the actual glue supply process, the isolation and lubrication effects of the softening agent determine the service life of the sealing mechanism and the effect of the auxiliary coating glue supply servo dosing machine in a certain degree, and therefore, the sealing effect of the softening agent is also important, because the isolation and lubrication effects of the softening agent can be influenced once the softening agent leaks. In this embodiment, set up first sealing washer 91 and second sealing washer 92 between seal cover 5 and front end housing 1 to can promote the sealed effect between seal cover 5 and front end housing 1, thereby can promote the sealed effect between softener delivery chute 51 and softener interface 11, this is favorable to promoting the isolation and the lubricated effect of softener, can assist life who promotes sealing mechanism promptly and the effect that supplementary application supplied the work of gluey servo-quantifying machine.

In the specific implementation process, the end part of the sealing sleeve 5 corresponding to one end of the cylinder body 2 is arranged on a third sealing ring 93 which is in sealing fit with the inner side wall of the mounting groove B; a fourth seal ring 94 that is in sealing engagement with the inner side wall of the mounting groove B is provided on the outer peripheral side wall of the seal cover 5 at a position that corresponds to the cylinder block 2 and is farther from the front end cover 1 than the mounting/dismounting groove 52. In this embodiment, the third seal ring 93 and the fourth seal ring 94 are both "O" shaped seal rings.

In the actual glue supply process, the sealing effect between the sealing sleeve 5 and the cylinder body 2 can be further improved through the third sealing ring 93 and the fourth sealing ring 94, so that the sealing effect of the sealing mechanism can be assisted to be improved, the effect of the glue entering and exiting from the sealing cavity A can be assisted to be improved, and the working effect of the servo quantifying machine for glue supply can be assisted to be improved better by the sealing mechanism.

Example two:

the embodiment discloses a method for disassembling a sealing mechanism for an automobile coating glue supply servo dosing machine on the basis of the first embodiment.

As shown in fig. 5: a method for disassembling a sealing mechanism for an automobile coating glue supply servo dosing machine is implemented on the basis of the sealing mechanism in the first embodiment, and when the sealing mechanism is disassembled, the disassembling process comprises the following steps:

the method comprises the following steps: dismantling a fixing bolt which is arranged for connecting the front end cover, the cylinder body and the rear end cover, and correspondingly dismantling the rear end cover and the cylinder body to separate the cylinder body from the front end cover and a sealing sleeve of the sealing mechanism, thereby exposing a groove for dismantling on the sealing sleeve;

step two: correspondingly embedding a puller claw of the puller for dismounting into a dismounting groove on the sealing sleeve, and abutting a puller mandrel of the puller for dismounting against the plunger;

step three: and rotating a puller handle of the puller for dismounting so that the sealing sleeve moves towards the direction far away from the front end cover along the central axis of the plunger until the sealing sleeve is completely separated from the front end cover and the plunger.

In this embodiment, when dismantling sealing mechanism (maintenance or change), only need to correspond dismantlement rear end cap and cylinder body (do not set up seal assembly between rear end cap and cylinder body, need not further demolish), then utilize the dismouting to correspond with the jack catch of pulling the horse and imbed in the groove for the dismouting on the seal cover, and will pull horse mandrel and plunger butt, and clockwise rotation pulls the horse handle, make the seal cover move towards the direction of keeping away from the front end housing along the axis of plunger (the plunger is fixed motionless this moment), until seal cover and front end cap and plunger break away from completely can accomplish sealing mechanism's dismantlement. In the scheme, the sealing mechanism can be disassembled only through one-time operation, and only the front end cover and the sealing sleeve need to be disassembled, and the cylinder body and the front end cover (sealing sleeve) and the rear end cover and the cylinder body do not need to be disassembled independently, so that the disassembling step of the sealing mechanism can be simplified, and the disassembling efficiency of the sealing mechanism can be improved.

Example three:

the embodiment discloses a method for installing a sealing mechanism for an automobile coating glue supply servo dosing machine on the basis of the first embodiment.

As shown in fig. 6: the mounting method of the sealing mechanism for the automobile coating glue supply servo dosing machine is implemented based on the sealing mechanism in the first embodiment, and when the sealing mechanism is mounted, the mounting process comprises the following steps:

step A: and correspondingly sleeving the sealing sleeve on the plunger, and enabling the front end of the sealing sleeve to correspond to the mounting groove on the front end cover. In this embodiment, each sealing element on the sealing sleeve should be correspondingly and sealingly mounted on the sealing sleeve between the sleeve sealing sleeves.

And B: and correspondingly sleeving the cylinder body at the rear end position of the sealing sleeve, and correspondingly sleeving the rear end cover at the rear end position of the cylinder body. In this embodiment, in order to ensure the sealing performance between the cylinder body and the sealing sleeve and between the rear end cover and the cylinder body, the sealing rings are arranged on the cylinder body and the rear end cover, so that the sealing rings are correspondingly and hermetically arranged on the cylinder body and the rear end cover before the cylinder body and the rear end cover are sleeved; and the rear end position of the cylinder body is provided with a circular truncated cone structure for mounting the rear end cover (for improving the sealing effect), and the rear end cover is correspondingly sleeved on the circular truncated cone structure at the rear end position of the cylinder body.

And C: the arranged fixing bolts sequentially penetrate through the rear end cover, the cylinder body and the front end cover and are screwed, so that the rear end cover, the cylinder body and the sealing sleeve move towards the front end cover along the central axis of the plunger until the front end of the sealing sleeve is in close contact with the mounting grooves in the front end cover, the cylinder body and the sealing sleeve are in close contact with the rear end of the cylinder body and the rear end of the cylinder body. In this embodiment, the tight contact between the front end position of the sealing sleeve and the mounting groove on the front end cover, between the cylinder body and the rear end position of the sealing sleeve, and between the rear end cover and the rear end position of the cylinder body means that the front end cover, the sealing sleeve, the cylinder body and the rear end cover are in sealing contact in sequence.

In the scheme, when the sealing mechanism is installed (maintained or replaced), only the sealing sleeve is correspondingly sleeved on the plunger, then the cylinder body and the rear end cover are sequentially sleeved (no sealing component is arranged between the rear end cover and the cylinder body, and independent step-by-step installation is not needed), and the rear end cover, the cylinder body and the sealing sleeve are driven by the fixing bolt to move to the position between the front end position of the sealing sleeve and the installation groove on the front end cover, the position between the rear end position of the cylinder body and the sealing sleeve and the position between the rear end position of the rear end cover and the rear end position of the cylinder body along the plunger to complete installation of the sealing mechanism. In this embodiment, the installation of the sealing mechanism can be completed only by one operation, and only the front end cover and the sealing sleeve need to be installed, and the cylinder body and the front end cover (sealing sleeve) and the rear end cover and the cylinder body do not need to be installed separately, so that the installation steps of the sealing mechanism can be simplified, and the disassembly and assembly efficiency of the sealing mechanism can be improved.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (9)

1. The utility model provides a sealing mechanism for servo dosing machine is glued in automobile coating confession which characterized in that: the plunger piston sealing device comprises a sealing sleeve, a plunger piston, a plunger piston, a plunger piston; the mounting groove extends along the central axis direction of the sealing cavity and extends from the middle position of the front end cover to the middle front position of the cylinder body;

the position, relatively close to the cylinder body, on the inner side wall of the seal sleeve is provided with a first Stent seal and a second Stent seal which are arranged at intervals along the central axis direction of the seal cavity and are respectively matched with the peripheral side wall of the plunger in a sealing way;

a groove with an opening end facing the cylinder body for dismounting is arranged on the peripheral wall of the outer side of the sealing sleeve corresponding to the cylinder body;

the middle part of the peripheral side wall of the sealing sleeve is provided with a softener port corresponding to the position of the softener port arranged on the front end cover, one end of the softener port is communicated with the softener port, and the other end of the softener port extends to a softener conveying groove communicated with the sealing cavity in the direction of the inner side wall of the sealing sleeve.

2. The sealing mechanism for an automobile coating glue supply servo dosing machine according to claim 1, characterized in that: and a third Stent seal which is coaxially arranged with the first Stent seal and the second Stent seal and is in sealing fit with the peripheral side wall of the plunger is arranged on the inner side wall of the sealing sleeve relatively close to the front end cover.

3. The sealing mechanism for an automobile coating glue supply servo dosing machine according to claim 2, characterized in that: and a dustproof ring which is coaxially arranged at intervals with the third Steer seal and is in sealing fit with the peripheral side wall of the plunger is arranged on the inner side wall of the sealing sleeve at a position between the front end cover and the third Steer seal.

4. The sealing mechanism for an automobile coating glue supply servo dosing machine according to claim 3, characterized in that: the inner side wall of the sealing sleeve is provided with a first guide belt which is coaxially arranged with the third Steer seal and the dust ring at intervals and is in sealing fit with the peripheral side wall of the plunger piston.

5. The sealing mechanism for an automobile coating glue supply servo dosing machine according to claim 1, characterized in that: and a second guide belt which is coaxially arranged at intervals with the first Stent seal and the second Stent seal and is in sealing fit with the peripheral side wall of the plunger piston is arranged on the inner side wall of the sealing sleeve at a position between the first Stent seal and the second Stent seal.

6. The sealing mechanism for an automobile coating glue supply servo dosing machine according to claim 1, characterized in that: the end part of the seal sleeve, corresponding to one end of the front end cover, is provided with a first seal ring which is in seal fit with the inner side wall of the mounting groove; and a second sealing ring which is in sealing fit with the inner side wall of the mounting groove is arranged on the peripheral side wall of the sealing sleeve, corresponds to the front end cover and is closer to the cylinder body relative to the softening agent conveying groove.

7. The sealing mechanism for an automobile coating glue supply servo dosing machine according to claim 1, characterized in that: the end part of the sealing sleeve, corresponding to one end of the cylinder body, is arranged on a third sealing ring which is in sealing fit with the inner side wall of the mounting groove; and a fourth sealing ring in sealing fit with the inner side wall of the mounting groove is arranged on the peripheral side wall of the sealing sleeve, corresponding to the cylinder body and opposite to the position, far away from the front end cover, of the dismounting groove.

8. A method for disassembling a sealing mechanism for an automobile coating glue supply servo dosing machine is characterized in that the method is implemented based on the sealing mechanism in claim 1, and when the sealing mechanism is disassembled, the disassembling process comprises the following steps:

the method comprises the following steps: dismantling a fixing bolt which is arranged for connecting the front end cover, the cylinder body and the rear end cover, and correspondingly dismantling the rear end cover and the cylinder body to separate the cylinder body from the front end cover and a sealing sleeve of the sealing mechanism, thereby exposing a groove for dismantling on the sealing sleeve;

step two: correspondingly embedding a puller claw of the puller for dismounting into a dismounting groove on the sealing sleeve, and abutting a puller mandrel of the puller for dismounting against the plunger;

step three: and rotating a puller handle of the puller for dismounting so that the sealing sleeve moves towards the direction far away from the front end cover along the central axis of the plunger until the sealing sleeve is completely separated from the front end cover and the plunger.

9. The installation method of the sealing mechanism for the automobile coating glue supply servo dosing machine is characterized in that the implementation is based on the sealing mechanism in claim 1, and when the sealing mechanism is installed, the installation process comprises the following steps:

step A: correspondingly sleeving a sealing sleeve on the plunger, and enabling the front end of the sealing sleeve to correspond to the mounting groove on the front end cover;

and B: the cylinder body is correspondingly sleeved at the rear end position of the sealing sleeve, and the rear end cover is correspondingly sleeved at the rear end position of the cylinder body;

and C: the arranged fixing bolts sequentially penetrate through the rear end cover, the cylinder body and the front end cover and are screwed, so that the rear end cover, the cylinder body and the sealing sleeve move towards the front end cover along the central axis of the plunger until the front end of the sealing sleeve is in close contact with the mounting grooves in the front end cover, the cylinder body and the sealing sleeve are in close contact with the rear end of the cylinder body and the rear end of the cylinder body.

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