CN215878573U - Automatic glue pressure control valve body - Google Patents

Abstract

The utility model discloses an automatic rubber pressure control valve body, and belongs to the technical field of valves. The pneumatic pulse valve comprises a valve body, wherein the valve body comprises a connecting block and a valve block from top to bottom, the connecting block and the valve block are fixed mutually, a sensor is fixedly connected onto the side wall of the connecting block, a valve sleeve is fixedly sleeved on the same side of the connecting block and the valve block, a shifting piece driving mechanism, a material returning valve and a feeding valve are sequentially arranged in the valve sleeve from top to bottom, and pneumatic pulse cylinders are arranged in the material returning valve and the feeding valve. The utility model adopts air pressure control (each air pipe joint is connected with an air pump to adjust air pressure, and glue pressure in the valve body is detected through a sensor) and glue pressure is fed back to a control system, the control system is used for controlling the air pressure instead of manually screwing a bolt rod, automatic glue pressure monitoring and controller feedback are used for controlling the output air pressure, and a single air cylinder is used for closing and opening a feeding and returning valve by adopting a plectrum principle.

Description

Automatic glue pressure control valve body

Technical Field

The utility model relates to an automatic rubber pressure control valve body, and belongs to the technical field of valves.

Background

In the prior art, the size of the glue outlet is controlled by manually screwing the bolt rod to adjust the glue pressure, but the glue pressure is easy to change, and the manual screwing of the bolt rod is easy to cause operation delay, so that the glue pressure cannot be adjusted in time.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the automatic rubber pressure control valve body solves the problem that manual screwing of a bolt rod is untimely and inaccurate in operation.

The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

an automatic rubber pressure control valve body comprises a valve body, wherein the valve body comprises a connecting block and a valve block from top to bottom, the connecting block and the valve block are fixed, a sensor is fixedly connected to the side wall of the connecting block, a valve sleeve is fixedly sleeved on the same side of the connecting block and the valve block, a shifting piece driving mechanism, a material returning valve and a feeding valve are sequentially arranged in the valve sleeve from top to bottom, and air pressure pulse cylinders are arranged in the material returning valve and the feeding valve;

the plectrum driving mechanism comprises a second valve core and a plectrum, the surface of the side wall of the valve sleeve, which is in contact with the connecting block, is provided with a hole groove, the axis of the hole groove is parallel to the horizontal plane, the position of the connecting block, which corresponds to the hole groove, is provided with a through hole, the inner cavity of the through hole is communicated with the inner cavity of the hole groove, the axis of the through hole is collinear with the axis of the hole groove, one end of the through hole, which is far away from the hole groove, is fixedly connected with a sealing plate for sealing the end part of the through hole, the second valve core is arranged in a sliding way in a cavity formed by the hole groove and the through hole in a surrounding way, the middle part of the side wall of the second valve core is provided with an annular groove, the diameters of the end parts of the second valve core, which are positioned at two sides of the annular groove, are respectively matched with the diameters of the inner cavities of the hole groove in the through hole, and one side surface, which faces the connecting block, is fixedly connected with a third compression spring, the valve body is also fixedly connected with two air pipe connectors, the two air pipe connectors are respectively communicated with the position close to the bottom wall of the hole groove in the inner cavity of the hole groove and the position close to the sealing plate in the inner cavity of the through hole, the shifting piece is positioned below the hole groove, and one end of the shifting piece extends into the annular groove through the side wall of the hole groove;

an upper perforation and a lower perforation are arranged on the surface of one side of the valve sleeve, which is in contact with the valve block, the perforations penetrate through the valve sleeve in the horizontal direction, an end cover used for plugging an inlet and an outlet at the end part of the perforations is arranged at the inlet and the outlet at one end of the perforations, which is far away from the valve block, and the feed valve and the return valve are respectively positioned in the inner cavities of the two perforations;

the material return valve comprises an air pressure pulse cylinder and a piston rod, the air pressure pulse cylinder and the piston rod are arranged along the length direction of the through hole, and the position of the piston rod is closer to the valve block than the air pressure pulse cylinder;

the feeding valve is also provided with an air pressure pulse cylinder and a piston rod, and the axes of the second valve core, the piston rod of the material returning valve and the piston rod of the feeding valve are parallel to each other;

the feed valve with the region between the feed back valve is provided with a lever structure, the one end of lever structure with the lateral wall fixed connection of feed back valve, the other end of lever structure with the lateral wall fixed connection of feed valve, the other end of plectrum with the lateral wall fixed connection of feed back valve.

As a preferred example, the pneumatic pulse cylinder includes: a first valve core, a second diaphragm, a first pressure plate, a second pressure plate and an inner hexagonal countersunk head screw,

a groove is arranged on one side, facing the through hole, of the end cover, the groove is communicated with the through hole, a circumferential bulge is arranged on the side wall of an inner cavity of the groove, the second diaphragm is attached to one side surface, facing the valve block, of the circumferential bulge, the first pressing plate is in threaded connection with the side wall of the inner cavity of the groove, the first pressing plate and the circumferential bulge jointly clamp the edge of the second diaphragm, the second pressing plate is positioned in a cavity formed by the bottom of the inner cavity of the groove and the second diaphragm in a surrounding manner, an air pipe connector is also arranged at the end cover, the air pipe connector at the end cover is communicated with the cavity formed at the bottom of the inner cavity of the groove, one end surface of the second pressing plate is attached to the second diaphragm, a threaded hole is formed in one end surface, far away from the second diaphragm, of the second pressing plate, and the hexagon socket countersunk head screw is screwed on the second pressing plate through the threaded hole, the end part of the inner hexagon countersunk head screw penetrates through the middle part of the second diaphragm, the end part of the inner hexagon countersunk head screw extends into the inner cavity of the first pressure plate through the second diaphragm, the end part of the inner hexagon countersunk head screw is sleeved with a first valve core, the end part of the first valve core extends out through the hole body in the middle part of the first pressure plate, and the end part of the first valve core extending out of the first pressure plate extends to the piston rod.

As a preferable example, a piston rod in the return valve is further provided with a steel ball, a first diaphragm, a return thimble, a piston sleeve and a second compression spring, the steel ball is located at one end of the piston rod in the return valve, which is far away from the valve block, one end of the piston rod in the return valve, which faces the valve block, is sequentially provided with a sealing ring, the first diaphragm and the return thimble, an outer ring of the return thimble is sleeved with the second compression spring, the valve block is correspondingly provided with a passage on the surface of the side wall of the valve block, which is corresponding to a through hole provided with the return valve, the first diaphragm is matched with and blocks an inlet and an outlet at one end of the passage, which is close to the valve sleeve, the piston sleeve is sleeved outside the piston rod, the edge of the end of the piston sleeve annularly abuts against the edge part of the first diaphragm, and the return thimble extends into an inner cavity of the passage through the inlet and the outlet of the passage, and the inner cavity of the passage is fixedly connected with a seal head.

As a preferable example, a passage is formed in the valve block corresponding to the through hole provided with the feed valve and the side wall of the valve block, a nozzle is arranged at an inlet and outlet at one end of the passage far away from the through hole, a feed thimble is sleeved on a piston rod of the feed valve, and a first compression spring is sleeved on a part of the feed thimble extending into the inner cavity of the passage.

The utility model has the beneficial effects that: the utility model adopts air pressure control and glue pressure feedback to the control system, the control system controls the air pressure to replace manual bolt rod screwing, automatic glue pressure monitoring and controller feedback to control the output air pressure, and the single cylinder adopts the plectrum principle to close and open the feeding and returning valve.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic structural view of portion A of FIG. 3;

FIG. 5 is a schematic structural view of portion B of FIG. 3;

FIG. 6 is a schematic structural view of portion C of FIG. 3;

fig. 7 is a schematic structural view of a portion D in fig. 3.

In the figure: the device comprises a valve block 1, a connecting block 2, a valve sleeve 3, a feeding thimble 4, a piston rod 5, a piston sleeve 6, an end enclosure 7, a steel ball 8, a nozzle 9, a first sealing ring 10, a second sealing ring 11, a third sealing ring 12, a return thimble 13, a fixed block 14, a fourth hexagon socket head cap screw 15, a cross-shaped groove countersunk head screw 16, a fourth sealing ring 17, a first diaphragm 18, a first hexagon socket head cap screw 19, a second hexagon socket head cap screw 20, a hexagon socket head flat round head screw 21, a sensor 22, a fifth sealing ring 23, a second compression spring 24, a first compression spring 25, an end cover 26, a first pressure plate 27, a first valve core 28, a second pressure plate 29, a second diaphragm 30, a hexagon socket head cap screw 31, a third hexagon socket head cap screw 32, a shifting sheet 33, a second valve core 34, an end enclosure 35, a sixth sealing ring 36, a pin 37, a pin 38, an open retainer 39, a first gas pipe joint 41, A second air pipe joint 42, a third compression spring 43, a seventh sealing ring 44, an eighth sealing ring 45 and a mounting block 46.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings.

As shown in fig. 1-7, an automatic glue-pressing control valve body comprises a valve body, the valve body comprises a connecting block 2 and a valve block 1 from top to bottom, the connecting block 2 and the valve block 1 are fixed, a sensor 22 is fixedly connected to the side wall of the connecting block 2, a valve sleeve 3 is fixedly sleeved on the same side of the connecting block 2 and the valve block 1, a shifting piece driving mechanism, a material returning valve and a material feeding valve are sequentially arranged in the valve sleeve 3 from top to bottom, and air pressure pulse cylinders are arranged in the material returning valve and the material feeding valve;

the shifting block driving mechanism comprises a second valve core 34 and a shifting block 33, a hole groove is formed in the surface of the side wall, which is in contact with the connecting block 2, of the valve sleeve 3, the axis of the hole groove is parallel to the horizontal plane, a through hole is formed in the position, corresponding to the hole groove, of the connecting block 2, the inner cavity of the through hole is communicated with the inner cavity of the hole groove, the axis of the through hole is collinear with the axis of the hole groove, a sealing plate 36 for sealing the end part of the through hole is fixedly connected to one end, which is far away from the hole groove, of the through hole, the second valve core 34 is slidably arranged in a cavity formed by encircling the hole groove and the through hole, a circumferential groove is formed in the middle of the side wall of the second valve core 34, the diameters of the end parts of the second valve core 34, which are located on two sides of the circumferential groove, are respectively matched with the diameters of the hole groove and the through hole, a third compression spring 43 is fixedly connected to the surface of one side, which faces the connecting block 2, two air pipe joints are fixedly connected to the valve body, and are respectively close to the bottom wall of the hole groove in the inner cavity of the hole groove and close to the sealing plate 36 in the through hole groove The shifting pieces 33 are positioned below the hole grooves, and one ends of the shifting pieces 33 extend into the annular grooves through the side walls of the hole grooves;

an upper perforation and a lower perforation are arranged on the surface of one side of the valve sleeve 3, which is in contact with the valve block 1, the perforations penetrate through the valve sleeve 3 in the horizontal direction, an end cover 26 for plugging an inlet and an outlet at the end part of the perforations is arranged at the inlet and the outlet at one end of the perforations, which is far away from the valve block 1, and a feed valve and a return valve are respectively positioned in the inner cavities of the two perforations;

the material return valve comprises an air pressure pulse cylinder and a piston rod 5, the air pressure pulse cylinder and the piston rod 5 are arranged along the length direction of the through hole, and the position of the piston rod 5 is closer to the valve block 1 than the air pressure pulse cylinder;

the feeding valve is also provided with an air pressure pulse cylinder and a piston rod 5, and the axes of the second valve core 34, the piston rod 5 of the feed back valve and the piston rod 5 of the feeding valve are parallel to each other;

a lever structure is arranged in the area between the feed valve and the return valve, one end of the lever structure is fixedly connected with the side wall of the return valve, the other end of the lever structure is fixedly connected with the side wall of the feed valve, and the other end of the shifting piece 33 is fixedly connected with the side wall of the return valve.

The pneumatic pulse cylinder includes: a first valve core 28, a second diaphragm 30, a first pressure plate 27, a second pressure plate 29, a hexagon socket head cap screw 31,

a groove is arranged on one side, facing the through hole, of the end cover 26, the groove is communicated with the through hole, a circumferential bulge is arranged on the side wall of an inner cavity of the groove, the second diaphragm 30 is attached to one side surface, facing the valve block 1, of the circumferential bulge, the first pressing plate 27 is in threaded connection with the side wall of the inner cavity of the groove, the edge of the second diaphragm 30 is clamped by the first pressing plate 27 and the circumferential bulge together, the second pressing plate 29 is positioned in a cavity formed by surrounding the bottom of the inner cavity of the groove and the second diaphragm 30, an air pipe connector is also arranged at the end cover 26, the air pipe connector at the end cover 26 is communicated with the cavity formed at the bottom of the inner cavity of the groove, one end face of the second pressing plate 29 is attached to the second diaphragm 30, a threaded hole is formed in one end face, far away from the second diaphragm 30, of the second pressing plate 29, an inner hexagon countersunk head screw 31 is screwed on the second pressing plate 29 through the threaded hole, and the end part of the inner hexagon countersunk screw 31 penetrates through the middle part of the second diaphragm 30, the end of the socket cap countersunk head screw 31 extends into the inner cavity of the first pressure plate 27 through the second diaphragm 30, the end of the socket cap countersunk head screw 31 is sleeved with the first valve core 28, the end of the first valve core 28 extends out through the hole in the middle of the first pressure plate 27, and the end of the part of the first valve core 28 extending out to the first pressure plate 27 extends to the piston rod 5.

The piston rod 5 in the feed back valve is also provided with a steel ball 8, a first diaphragm 18, a feed back thimble 13, a piston sleeve 6 and a second compression spring 24, the steel ball 8 is positioned at one end of the piston rod 5 in the feed back valve, which is far away from the valve block 1, one end of the piston rod 5 in the feed back valve, which faces the valve block 1, is sequentially provided with a sealing ring, the first diaphragm 18 and the feed back thimble 13, the outer ring of the feed back thimble 13 is sleeved with the second compression spring 24, the valve block 1 is provided with a passage on the surface of the side wall thereof corresponding to a through hole provided with the feed back valve, the first diaphragm 18 is matched with and blocks an inlet and an outlet at one end on the passage, which is close to the valve sleeve 3, the piston sleeve 6 is sleeved outside the piston rod 5, the edge of the end part of the piston sleeve 6 annularly abuts against the edge part of the first diaphragm 18, the feed back thimble 13 extends into the inner cavity of the passage through the inlet and the inlet of the passage, and the inner cavity of the passage is fixedly connected with a seal head 7.

A passage is arranged on the valve block 1 corresponding to the through hole provided with the feeding valve and the side wall of the valve block, a nozzle 9 is arranged at the inlet and outlet of one end of the passage far away from the through hole, a feeding thimble 4 is sleeved on a piston rod 5 of the feeding valve, and a first compression spring 25 is sleeved on the part of the feeding thimble 4 extending into the inner cavity of the passage.

It should be noted that:

the connecting block 2 and the valve block 1 are connected by bolts, and two fourth sealing rings 17 (each sealing ring is in an O-shaped structure and used for improving the sealing degree of each connecting part of the device) are respectively arranged at the connecting parts of the connecting block 2 and the valve block 1;

the connecting block 2 is positioned above the valve block 1, the bottom end face of the connecting block 2 is contacted and attached with the top end face of the valve block 1, a sensor 22 is arranged on the side wall of the connecting block 2, the sensor 22 is a pressure sensor 22 for detecting the pressure in the valve body, the valve sleeve 3 is fixedly sleeved on the same side of the connecting block 2 and the valve block 1,

in the paddle drive mechanism (shown in fig. 4): a second valve core 34, a sixth sealing ring 37 and an eighth sealing ring 45 are arranged in the hole groove on the valve housing 3, the two ends of the side wall of the second valve core 34 are respectively provided with the sixth sealing ring 37 and the eighth sealing ring 45 in a clamping and embedding way, the side wall of the second valve core 34 at one end of the hole groove inner cavity is provided with the sixth sealing ring 37 in a sleeving way, the side wall of the second valve core 34 at one end of the through hole inner cavity is provided with the eighth sealing ring 45 in a fixing and installing way (namely under the condition that the two ends of the second valve core 34 are respectively matched with two kinds of diameter cavities, the tightness degree of the second valve core 34 and the side wall of the cavity is improved by the sealing rings, the gas injected by the first gas pipe joint 41 and the second gas pipe joint 42 is ensured not to flow out from the gap between the second valve core 34 and the hole groove or the side wall of the through hole, so that the position of the second valve core 34 in the cavity formed by the hole groove and the through hole inner cavity is adjusted by the gas pump), after the sixth sealing ring 37 and the eighth sealing ring 45 are provided, when the second valve core 34 moves in a cavity shared by the hole groove and the through hole, one end of the hole groove is communicated with the first air pipe joint 41 (the first air pipe joint 41 is an air pipe joint communicated with the inner cavity of the hole groove close to the bottom wall of the inner cavity of the hole groove, when the first air pipe joint 41 enters air, the second valve core 34 is pushed to move to the position of the connecting block 2), as the first air pipe joint 41 causes the pressure in the inner cavity of the hole groove to increase due to an externally connected air pump and other air conveying mechanisms, the second valve core 34 is pushed to move to one side close to the connecting block 2, the air pipe joint connected with the side wall of the inner cavity of the through hole close to the sealing plate 36 is named as a second air pipe joint 42, one end of the shifting plate 33 is installed in the middle annular groove of the second valve core 34, the shifting plate 33 and the lever structure are mentioned in the present invention, the valve body is of a sheet structure, two pins 38 are screwed on the valve body, when the pins 38 extend into the valve housing 3, the shifting sheet 33 is arranged on one of the pins 38 in a sliding manner, the lever structure is arranged on the pins 38 in a rotating manner (the rod body part on the pins 38 penetrates through the valve body, the part of the rod body of the pins 38 extending out of the valve body is sleeved with an opening check ring 39 for fixing the pins 38), one end of the shifting sheet 33 extends into the annular groove, the other end of the shifting sheet 33 extends into and is clamped on the side wall of the material return valve component (the other end of the shifting sheet 33 is fixedly connected with the first valve core 28 in the material return valve, one end of the first valve core 28 extends to the piston rod 5, a steel ball 8 is clamped between the end part of the first valve core 28 and the piston rod 5, the first valve core 28 extends out of the first pressure plate 27 and is fixedly connected with one end of the shifting sheet 33), and the lever structure is positioned between the feed valve and the discharge valve (an independent valve housing is arranged inside the valve housing 3, be provided with the cylinder structure in this individual cavity, lever structure's middle part is rotated and is set up on the cylinder structure, and plectrum 33 and lever structure's fixed mode can be: bosses are arranged on the bottom wall of the groove body of the annular groove and the surface of the side wall of the first valve core 28, grooves matched with the embedded bosses are arranged on the end faces of the shifting piece 33 and the lever structure, the shifting piece 33 and the lever structure are driven by the matching and embedding of the bosses and the grooves), and two ends of the lever structure can respectively extend into the two through holes and are embedded on the side walls of the feed valve and the return valve in a matching and embedding manner.

One end fixedly connected with third compression spring 43 that is close to connecting block 2 on the second valve core 34 (the one end of third compression spring 43 here is connected with second valve core 34, the other end and shrouding 36 looks fixed connection, third compression spring 43 can be used for injecing and resetting to second valve core 34 of second valve core 34 position), be provided with a through passage (namely through-hole) on the connecting block 2, this passageway is linked together with the hole groove, the access & exit department of keeping away from valve barrel 3 on this passageway is provided with shrouding 36, this shrouding 36 matches the shutoff passageway, the access & exit department of passageway is counter bore structure, be provided with the hoop recess corresponding to counter bore structure on the shrouding 36, shrouding 36 fixedly connected with seventh sealing washer 44 in the hoop recess, utilize seventh sealing washer 44 to improve the inseparability of shrouding 36 between the passageway lateral wall.

The screw has been seted up to connecting block 2 roof, and this screw is used for installing installation piece 46, is provided with the installation or the fixing at whole valve body top of being convenient for of the body of hole on this installation piece 46, utilizes screw or bolt etc. to carry out part with the valve body through the body of hole and fixes.

In fig. 1, a plurality of threaded holes or through holes are formed in the side wall of the valve housing 3, and are used for fixing the valve housing 3 on the connecting block 2 or the valve block 1, for example, a fourth hexagon socket head cap screw 15 or a second hexagon socket head cap screw 20, a threaded hole is also formed in a side surface of the bottom of the valve block 1, which is far away from the valve housing 3, a cross-shaped groove countersunk head screw 16 is screwed into the threaded hole in the bottom of the valve block 1 and extends into the threaded hole in the side wall surface of the valve housing 3, so that the valve housing 3 is fixed with the valve block 1, a pin 38 is inserted into the side wall outside the valve housing 3, the pin 38 in fig. 1 is used for providing a pivot for a lever structure, an end cover 26 is fixedly connected to an entrance and exit of a perforated end portion in the valve housing 3 (an air pipe joint is also arranged in the middle of the outer side wall of the end cover 26, and air pressure adjustment is performed to a chamber inside the end cover 26 by the air pipe joint), and the annular direction of the end cover 26 is fixed by a plurality of screws (in the figure, a plurality of third hexagon socket head cap 32 is used for performing end cover 26, a third socket head cap screw 32 is screwed through a threaded hole in the edge of the end cover 26 and screwed with a threaded hole in the surface of the outer side wall of the through hole in the valve sleeve 3, a first socket head cap screw 19 is screwed and fixed on the surface of the valve sleeve 3, the edge of the side wall of the head of the first socket head cap screw 19 is matched and pressed against the surface of the side wall of the part of the end cover 26 outside the valve sleeve 3, and the end cover 26 is relatively comprehensively fixed).

In fig. 2, cubic protrusions are arranged on two sides of the top of the connecting block 2, a sensor 22 is fixedly connected to the side wall of one protrusion, and through holes are formed in the top end faces of the two protrusions and used for connecting pipelines;

in fig. 5, the end of the first valve core 28 extends to the piston rod 5, the end face of one end of the piston rod 5 and the end of the first valve core 28 together clamp a steel ball 8, the end face of the end of the first valve core 28 and the middle of the end face of the piston rod 5 are both provided with a tapered groove, the presence of the steel ball 8 prevents the end faces of the piston rod 5 and the first valve core 28 from directly contacting, the end face of the other end of the piston rod 5 is sequentially provided with a third sealing ring 12, a first membrane 18 and a return thimble 13, the middle of the piston rod 5 sequentially passes through the third sealing ring 12 and the first membrane 18 and is embedded in the middle of the return thimble 13 in a matching manner, the first membrane 18 is a flexible and stretchable structure (the first membrane 18 and the second membrane 30 are both flexible and stretchable structures), and since a passage in the return valve and a passage in the feed valve (both passages are located on the valve block 1) are usually filled with glue, the first membrane 18 arranged here is used for isolating glue and preventing the glue from permeating into a hole groove or an air pipe interface (the hole groove is used for communicating with the inner cavity of the return valve due to the existence of the shifting sheet 33, the first membrane 18 at this place separates the part of the return valve contacted with the glue, and the retractility of the first membrane 18 at this place can further prevent the glue from extending into because the return valve is in a reciprocating telescopic structure), the piston sleeve 6 is fixed at the inlet of the passage of the valve block 1, the side wall of the end surface of the piston sleeve 6 is matched and pressed against the edge of the first membrane 18, the end part of the return thimble 13 has a taper, the seal head 7 is fixed on the side wall of the inner cavity of the return valve, a passage is arranged in the middle part of the seal head 7, the end part of the return thimble 13 can be matched and pressed against the passage on the seal head 7 under the pushing of the piston rod 5, thereby realizing the closing of the return valve, the size of the inner cavity of the passage of the valve block 1 is gradually reduced along the direction far away from the first membrane 18, the end socket 7 is clamped and embedded on the side wall of the passage of the valve block 1, a fifth sealing ring 23 is arranged in the contact area of the end socket 7 and the valve block 1, a second compression spring 24 is sleeved outside the feed back thimble 13, and one end of the second compression spring 24 is pressed against the surface of the side wall of the end socket 7.

In fig. 6, there are many similarities in the structure of the feed valve and the return valve, a detachable plug 35 is further disposed on the side wall of the passage corresponding to the feed valve on the valve block 1, the plug 35 is located at the bottom of the valve body, the end socket 7 is screwed at the bottom of the valve block 1, when the end socket 7 leaves the valve block 1, the side wall of the passage is communicated with the outside due to the existence of a threaded hole, in addition, a fixed block 14 is further disposed at the edge of the bottom wall of the valve block 1, a threaded hole for fixing the valve body on other devices or areas is formed in the fixed block 14, an inner hexagonal round head screw 21 is installed at the threaded hole, and the feed valve and the return valve are different in that: a feeding thimble 4 is sleeved on the end part of a piston rod 5 in the feeding valve, the length of the feeding thimble 4 is longer than that of a return thimble 13, a passage on the feeding valve penetrates through the valve block 1, a nozzle 9 is matched and clamped at an inlet and an outlet at one side of the passage far away from the piston rod 5, the feeding thimble 4 can block the inlet and the outlet at the nozzle 9 on the self moving path, one end of the nozzle 9 extends into the inner cavity of the passage, the part of the nozzle 9 extending into the inner cavity of the passage is matched and pressed on the side wall of the passage, and the lateral wall of the nozzle 9 is sleeved with a second sealing ring 11 to improve the sealing performance of the contact area of the nozzle 9 and the valve block 1, the part of the outer lateral wall of the nozzle 9, which is positioned outside the valve block 1, is sequentially sleeved with two first sealing rings 10 along the axial direction of the nozzle 9, and the first sealing rings 10 are used for sleeving the nozzle 9 by other pipelines or sheaths to improve the tightness degree of connection between the nozzle 9 and the other pipelines or the inner cavity of the sheath.

The working principle is as follows: according to the pressure of the glue flowing through the valve body (two cubic protrusions are arranged on the top of the connecting block 2 on the top of the valve body, wherein the top end face of one protrusion is provided with a through hole for inserting and connecting a glue conveying pipeline, the sensor 22 is fixed on the side wall of the protrusion, the sensor 22 extends into the through hole inner cavity inside the protrusion), the pressure of the glue is measured by the sensor 22, gas is pumped by the second gas pipe connector 42 (the second gas pipe connector 42 is fixed on the protrusion in the connecting block 2) or the gas is pumped by the first gas pipe connector 41 (the first gas pipe connector 41 is fixed on the top end face of the valve sleeve 3), because the second valve core 34 is arranged in a cavity formed by the hole groove-through hole enclosure in a sliding manner, two ends of the second valve core 34 are matched and pressed on the side wall of the cavity, and the pressure at two ends of the cavity inner cavity is increased by the gas pumped by the second gas pipe connector 42 or the first gas pipe connector 41, thereby pushing the second valve core 34, because the middle side wall of the second valve core 34 is provided with a circumferential groove, the top end of the plectrum 33 in the plectrum driving mechanism extends into and is fixed in the circumferential groove, thereby the second valve core 34 is adjusted by the air pump through each air pipe joint, the plectrum 33 is indirectly driven to move, because the plectrum 33, the material return valve, the lever structure and the feed valve have corresponding linkage relation, thereby the change of the position of the second valve core 34 caused by the first air pipe joint 41 and the second air pipe joint 42 is realized, the plectrum 33 is driven to synchronously move in the same direction, the bottom end of the plectrum 33 can drive the first valve core 28 in the material return valve to move in the same direction, and the two ends of the lever structure are respectively connected with the side walls of the feed valve and the material return valve, so the first valve core 28 in the feed valve and the first valve core 28 in the material return valve are always in opposite moving directions, namely when one of the feed valve and the material return valve tends to close, the other tends to open, where the air can be pumped through the air pipe joint at the end cover 26 to adjust the volume of the cavity formed by the groove of the end cover 26 and the second membrane 30 (increasing the air pressure of the cavity, moving the middle part of the second membrane 30 towards the direction of the valve block 1, thereby moving the position of the first valve core 28 fixed on the second membrane 30, so that it pushes the piston thimble on the piston rod 5, thereby indirectly adjusting the distance between the end of the feed back thimble 13 and the central passage of the end socket 7, and the distance between the end of the feed back thimble 4 and the inlet of the nozzle 9 (where the end of the feed back thimble 4 and the end of the feed back thimble 13 have tapers, the inlet and outlet of the passage of the end socket 7 and the inlet and outlet of the nozzle 9 also have tapers (the end surfaces of the inlet and outlet are tapered surfaces), adjusting the distances between the feed back thimble 4, the feed back thimble 13, etc. and each inlet and outlet to adjust the glue pressure), the glue pressure is adjusted through the first air pipe joint 41, the second air pipe joint 42 and the air pipe joints at the two end covers 26.

Pumping gas by using an air pump to drive the first valve core to reciprocate, synchronously driving the shifting sheet to move in the same direction, driving a piston rod (one end of the shifting sheet is fixed with the first valve core, and the first valve core is connected with the piston rod) in the return valve to move in the same direction by the shifting sheet, and realizing the closing or opening of the feed valve and the return valve by the lever structure that the piston rods of the feed valve and the return valve and the corresponding components move in opposite directions; gas is pumped in through a gas pipe connector on the end cover, the position of the first valve core is adjusted, and therefore the distance between the feeding and returning ejector pin and the inlet and outlet of the plug is adjusted, and the glue pressure is adjusted.

The technology adopts air pressure control and glue pressure feedback to a control system, the control system controls the air pressure instead of manually screwing a bolt rod, automatic glue pressure monitoring and controller feedback control the output air pressure, and a single air cylinder adopts a plectrum principle to close and open a feeding and returning valve.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides an automatic glue and press control valve body, includes the valve body, its characterized in that: the valve body comprises a connecting block (2) and a valve block (1) from top to bottom, the connecting block (2) and the valve block (1) are fixed, a sensor (22) is fixedly connected to the side wall of the connecting block (2), a valve sleeve (3) is fixedly sleeved on the same side of the connecting block (2) and the valve block (1), a shifting piece driving mechanism, a material returning valve and a material feeding valve are sequentially arranged in the valve sleeve (3) from top to bottom, and air pressure pulse cylinders are arranged in the material returning valve and the material feeding valve;

the plectrum driving mechanism comprises a second valve core (34) and a plectrum (33), a hole groove is formed in the surface of the side wall of the valve sleeve (3) which is in contact with the connecting block (2), the axis of the hole groove is parallel to the horizontal plane, a through hole is formed in the connecting block (2) at the position corresponding to the hole groove, the inner cavity of the through hole is communicated with the inner cavity of the hole groove, the axis of the through hole is collinear with the axis of the hole groove, a sealing plate (36) for sealing the end part of the through hole is fixedly connected to one end of the through hole far away from the hole groove, the second valve core (34) is arranged in a sliding manner in a cavity formed by the hole groove and the through hole in a surrounding manner, an annular groove is formed in the middle part of the side wall of the second valve core (34), and the diameters of the end parts of the second valve core (34) at two sides of the annular groove are respectively matched with the diameters of the inner cavity of the hole groove in the through hole, a third compression spring (43) is fixedly connected to the surface of one side, facing the connecting block (2), of the second valve core (34), two air pipe joints are fixedly connected to the valve body and are respectively communicated with the position, close to the bottom wall of the hole groove, in the inner cavity of the hole groove and the position, close to the sealing plate (36), in the inner cavity of the through hole, the poking piece (33) is located below the hole groove, and one end of the poking piece (33) extends into the annular groove through the side wall of the hole groove;

an upper perforation and a lower perforation are formed in the surface, on one side, of the valve sleeve (3), which is in contact with the valve block (1), the perforations penetrate through the valve sleeve (3) in the horizontal direction, an end cover (26) used for plugging an inlet and an outlet of the end part of each perforation is arranged at the inlet and the outlet of one end, far away from the valve block (1), of each perforation, and the feed valve and the return valve are respectively positioned in inner cavities of the two perforations;

the material return valve comprises an air pressure pulse cylinder and a piston rod (5), the air pressure pulse cylinder and the piston rod (5) are arranged along the length direction of the through hole, and the position of the piston rod (5) is closer to the valve block (1) than the air pressure pulse cylinder;

the feeding valve is also provided with a pneumatic pulse cylinder and a piston rod (5), and the axes of the second valve core (34), the piston rod (5) of the feed back valve and the piston rod (5) of the feeding valve are parallel to each other;

the area between the feed valve and the material return valve is provided with a lever structure, one end of the lever structure is fixedly connected with the side wall of the material return valve, the other end of the lever structure is fixedly connected with the side wall of the feed valve, and the other end of the shifting piece (33) is fixedly connected with the side wall of the material return valve.

2. The automatic glue-pressing control valve body according to claim 1, characterized in that: the pneumatic pulse cylinder includes: a first valve core (28), a second diaphragm (30), a first pressure plate (27), a second pressure plate (29) and an inner hexagonal countersunk head screw,

a groove is formed in one side, facing the through hole, of the end cover (26), the groove is communicated with the through hole, a circumferential protrusion is arranged on the side wall of an inner cavity of the groove, the second membrane (30) is attached to one side surface, facing the valve block (1), of the circumferential protrusion, the first pressing plate (27) is in threaded connection with the side wall of the inner cavity of the groove, the first pressing plate (27) and the circumferential protrusion clamp the edge of the second membrane (30) together, the second pressing plate (29) is located in a cavity formed by surrounding the bottom of the inner cavity of the groove and the second membrane (30), an air pipe connector is also arranged at the end cover (26), the air pipe connector at the end cover (26) is communicated with the cavity formed at the bottom of the inner cavity of the groove, and one end face of the second pressing plate (29) is attached to the second membrane (30), a threaded hole is formed in one end face, far away from the second diaphragm (30), of the second pressing plate (29), an inner hexagonal countersunk head screw is screwed on the second pressing plate (29) through the threaded hole, the end portion of the inner hexagonal countersunk head screw penetrates through the middle of the second diaphragm (30), the end portion of the inner hexagonal countersunk head screw extends into the inner cavity of the first pressing plate (27) through the second diaphragm (30), a first valve core (28) is sleeved on the end portion of the inner hexagonal countersunk head screw, the end portion of the first valve core (28) extends out through a hole body in the middle of the first pressing plate (27), and the end portion of the portion, far away from the first pressing plate (27), of the first valve core (28) extends towards the piston rod (5).

3. The automatic glue-pressing control valve body according to claim 1, characterized in that: the valve is characterized in that a piston rod (5) in the return valve is further provided with a steel ball (8), a first diaphragm (18), a return thimble (13), a piston sleeve (6) and a second compression spring, the steel ball (8) is positioned at one end, far away from the valve block (1), of the piston rod (5) in the return valve, one end, facing the valve block (1), of the piston rod (5) in the return valve is sequentially provided with a sealing ring, the first diaphragm (18) and the return thimble (13), the outer ring of the return thimble (13) is sleeved with the second compression spring, the valve block (1) is correspondingly provided with a through hole of the return valve, a passage is formed in the surface of the side wall of the valve block, the first diaphragm (18) is matched and blocked, close to the inlet and outlet of one end of the valve sleeve (3) on the passage, the piston sleeve (6) is sleeved on the outer side of the piston rod (5), and the edge of the end part of the piston sleeve (6) is annularly pressed against the edge part of the first diaphragm (18), the feed back thimble (13) extends into the inner cavity of the passage through the inlet and the outlet of the passage, and the inner cavity of the passage is fixedly connected with a seal head (7).

4. The automatic glue-pressing control valve body according to claim 1, characterized in that: the valve block (1) is correspondingly provided with a passage is formed in the through hole of the feeding valve and the side wall of the valve block, a nozzle (9) is arranged at the inlet and outlet of one end of the passage far away from the through hole, a feeding ejector pin (4) is sleeved on a piston rod (5) of the feeding valve, and a first compression spring (25) is sleeved on the part, extending into the inner cavity of the passage, of the feeding ejector pin (4).

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