Center line glue adding device for forming machine

Abstract

The invention relates to the technical field of tobacco processing equipment, and discloses a center line glue adding device for a forming machine, which comprises a glue storage tank, a pump body and a moving trolley, a through hole is formed in the bottom of the glue storage tank and is communicated with a first pipe body; an inlet and an outlet of the pump body are correspondingly connected with a first valve group and a second valve group respectively; the first valve group is communicated with the first pipe body; the second valve group is communicated with a second pipe body; the first valve group is communicated with the second valve group through a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is communicated with the first pipe body, and the other end of the first connecting pipe is communicated with an outlet of the pump body; one end of the second connecting pipe is communicated with the second pipe body, and the other end of the second connecting pipe is communicated with an inlet of the pump body; the glue storage tank and the pump body are both fixedly connected to the moving trolley. In the whole glue adding process, the labor intensity of glue adding is relieved, and the glue adding efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco processing equipment, and relates to a central line glue adding device for a forming machine. Background Art

[0002] Central line glue is one of the main raw and auxiliary materials for the production of cigarette filter rods, and is used for bonding the forming paper and the tow during the forming process of the cigarette filter rod to prevent the filter tip from becoming unfastened.

[0003] An existing filter rod forming machine is equipped with a central line glue cylinder. During the operation of the forming machine, central line glue needs to be continuously consumed and sprayed on the cigarette filter rod. Therefore, it is necessary to regularly supplement the central line glue into the central line glue cylinder on the forming machine. Since the viscosity of the central line glue is relatively high and it is easy to solidify, it cannot be transported over a long distance by pipelines, etc., and can only be supplemented into the glue cylinder of the forming machine in barrels regularly.

[0004] In the prior art, generally, workers use small buckets to divide and package the central line glue in the central line glue storage room and then carry it to the machine platform, and add the central line glue into the central line glue cylinder of the equipment through the small buckets.

[0005] During the glue adding process, it is necessary to pre-divide and package the small buckets of central line glue, then carry them to the machine platform, and pour the central line glue into the central line glue cylinder of the forming machine through the small buckets. The height of the mouth of the central line glue cylinder from the ground is about 1.7 meters. In order to prevent the glue from overflowing or spilling during the glue adding process, due to the environmental requirements of the production line, a fixed platform cannot be installed on the forming machine. Only a platform can be moved in during the glue adding process, and the worker stands on the platform to add the glue. Moreover, after the glue adding is completed, the platform needs to be moved to a designated place for placement. During the entire glue adding process, the labor intensity of glue adding is large and the efficiency is low. Summary of the Invention

[0006] The present application provides a central line glue adding device for a forming machine, aiming to solve the problems of high labor intensity and low efficiency in the whole glue adding process in the prior art.

[0007] In one aspect, a central line glue adding device for a forming machine is provided, including:

[0008] A glue storage tank for storing central line glue, a through hole is opened at the bottom of the glue storage tank, and the through hole is communicated with a first pipe body;

[0009] A pump body, the inlet and outlet of the pump body are respectively connected with a first valve group and a second valve group; the first valve group is communicated with the first pipe body; the second valve group is communicated with a second pipe body;

[0010] The first valve assembly is communicated with the second valve assembly through a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is communicated with the first pipe body, and the other end is communicated with the outlet of the pump body; one end of the second connecting pipe is communicated with the second pipe body, and the other end is communicated with the inlet of the pump body;

[0011] A moving trolley, both the glue storage tank and the pump body are fixedly connected to the moving trolley.

[0012] Wherein, a mobile power source can be arranged on the moving trolley, the pump body is electrically connected to the mobile power source, or the pump body is connected with a power cord for electrically connecting with an external power source.

[0013] In one solution, the first valve assembly includes a valve body having a channel; one end of the channel is communicated with the inlet of the pump body, and the other end is communicated with the first pipe body; the valve body is provided with a first opening and a second opening both communicated with the channel; the first opening and the second opening are respectively connected to the first pipe body and the second pipe body in a one-to-one correspondence; two valve plates are arranged in the valve body; each valve plate can rotate in the channel, and the valve plate can rotate to block or open the channel; and the two valve plates can rotate to respectively block or open the first opening and the second opening in a one-to-one correspondence.

[0014] Specifically, the two valve plates can respectively cover the first opening and the second opening in a one-to-one correspondence. Each valve plate can rotate in the channel through a rotating shaft.

[0015] In one solution, the structures of the first valve assembly and the second valve assembly are the same.

[0016] In one solution, an opening is provided at the top of the glue storage tank, a cover body is covered on the opening, and a liquid level sensor is fixedly arranged on the cover body.

[0017] In one solution, the cover body is connected to the edge of the opening through a buckle.

[0018] Specifically, a clamping strip is arranged at the edge of the opening, and a clamping groove for the clamping strip to be clamped into is arranged on the inner wall of the cover body.

[0019] In one solution, a ventilation hole is provided on the cover body.

[0020] Specifically, handles that cooperate with each other are provided on both the cover body and the glue storage tank.

[0021] In one solution, a liquid level pipe is provided on the side of the glue storage tank; one end of the liquid level pipe is communicated with the lower part of the glue storage tank, and the other end is communicated with the upper part of the glue storage tank.

[0022] In one solution, the pump body includes a housing having a chamber, a drive shaft that can reciprocate within the chamber, a diaphragm that divides the chamber into a first region and a second region, and a drive member for driving the drive shaft to move; the edge of the diaphragm is sealingly connected to the inner wall of the chamber; the drive shaft is fixedly connected to the diaphragm; the drive member is fixedly connected to the housing; the inlet and outlet of the pump body are both in communication with the first region.

[0023] In one solution, the drive member includes a drive motor; an n-shaped rack is provided on the drive shaft, and both ends of the rack are fixedly connected to the drive shaft. The rack and the drive shaft enclose an engagement region, and teeth are provided on a part of the drive shaft located within the engagement region. The output end of the drive motor can engage with the drive shaft and the rack to drive the drive shaft to reciprocate.

[0024] In one solution, the drive member includes an air valve in communication with the second region; the air valve has an air inlet for communicating with an external high-pressure air source and an air outlet for discharging the gas within the second region; the air valve is fixedly connected to the housing.

[0025] Advantages of the present application:

[0026] By providing a mobile trolley, after the staff drives the mobile trolley to a designated location and starts the pump body, the midline glue in the glue storage tank enters the midline glue cylinder of the molding machine through the first pipe body, the pump body, and the second pipe body, for the work of adding glue to the molding machine.

[0027] Compared with the need to sub-pack the midline glue buckets and then lift them onto the machine table and pour the midline glue into the midline glue cylinder of the molding machine through the buckets, the present application only needs to insert the second pipe body into the midline glue cylinder. The present application reduces the labor intensity of the staff and improves the glue adding efficiency.

[0028] At the same time, the first valve assembly and the second valve assembly provided at the inlet and outlet of the pump body cooperate with the first connecting pipe and the second connecting pipe. When the first valve assembly connects the first pipe body and the pump body inlet, the first valve assembly blocks the connection between the pump body inlet and the first connecting pipe and the second connecting pipe; when the first valve assembly blocks the first pipe body and the pump body inlet, the first valve assembly connects the pump body inlet with the first connecting pipe and the second connecting pipe; when the second valve assembly blocks the second pipe body and the pump body outlet, the second valve assembly connects the pump body outlet with the first connecting pipe and the second connecting pipe; when the second valve assembly connects the second pipe body and the pump body outlet, the second valve assembly blocks the connection between the pump body outlet and the first connecting pipe and the second connecting pipe.

[0029] By setting the first valve assembly and the second valve assembly and cooperating with the first connecting pipe and the second connecting pipe, the conveying directions of the first pipe body and the second pipe body are changed. Therefore, it is realized that only one pump body can be used to complete the glue replenishment for the molding machine and the glue replenishment for the glue storage tank. The use of pump bodies is reduced, and the production cost is lowered. Brief Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a schematic diagram of the medium glue adding device in an embodiment of the present application;

[0032] Figure 2 It is a schematic cross-sectional structure diagram of the pump body in an embodiment of the present application (driven by a driving motor);

[0033] Figure 3 It is a schematic cross-sectional structure diagram of the first valve assembly in an embodiment of the present application (in the state where the channels are connected);

[0034] Figure 4 It is a schematic cross-sectional structure diagram of the first valve assembly in an embodiment of the present application (in the state where the channels are blocked);

[0035] Figure 5 It is a schematic diagram of the connection between the driving shaft and the output end of the driving motor in an embodiment of the present application;

[0036] Figure 6 It is a schematic cross-sectional structure diagram of the pump body in an embodiment of the present application (driven by an air valve);

[0037] Figure 7 It is a schematic cross-sectional structure diagram of the air valve in an embodiment of the present application (with the valve core in the first working position);

[0038] Figure 8 It is a schematic cross-sectional structure diagram of the air valve in an embodiment of the present application (with the valve core in the second working position);

[0039] Reference numerals in the drawings:

[0040] 1. Glue storage tank; 11. First pipe body; 12. Cover body; 13. Liquid level sensor; 14. Handle; 15. Liquid level pipe; 16. Vent hole; 2. Pump body; 21. Driving motor; 22. Driving shaft; 23. Rack; 24. Meshing area; 25. Output end; 26. Housing; 261. First area; 262. Second area; 263. Diaphragm; 264. Partition board; 27. Air valve; 271. Air inlet; 272. Air outlet; 273. First exhaust passage; 274. First commutation passage; 275. Second commutation passage; 276. Second exhaust passage; 277. Valve seat; 278. Valve core; 2781. First working position; 2782. Second working position; 28. Connection passage; 29. Rod; 3. Second pipe body; 4. First valve assembly; 41. Valve body; 42. Passage; 43. First opening; 44. Second opening; 45. Valve plate; 46. Limit convex ring; 47. Rotating shaft; 48. Handle; 5. Second valve assembly; 6. First connecting pipe; 7. Second connecting pipe; 8. Mobile trolley. Detailed implementation manners

[0041] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application. Similarly, the following embodiments are only partial embodiments of the present application rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0046] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] This application makes improvements and innovations and proposes the following embodiments.

[0048] In some embodiments, please refer to Figures 1 to 8 , a device for adding center line glue to a molding machine is provided, including:

[0049] A glue storage tank for storing center line glue, a through hole is opened at the bottom of the glue storage tank, and the through hole is communicated with a first pipe body;

[0050] A pump body, the inlet and outlet of the pump body are respectively connected with a first valve group and a second valve group; the first valve group is communicated with the first pipe body; the second valve group is communicated with a second pipe body;

[0051] The first valve assembly is communicated with the second valve assembly through the first connecting pipe and the second connecting pipe; one end of the first connecting pipe is communicated with the first pipe body, and the other end is communicated with the outlet of the pump body; one end of the second connecting pipe is communicated with the second pipe body, and the other end is communicated with the inlet of the pump body;

[0052] The mobile trolley, the glue storage tank and the pump body are all fixedly connected to the mobile trolley.

[0053] Wherein, a mobile power source can be arranged on the mobile trolley, the pump body is electrically connected to the mobile power source, or the pump body is connected with a power cord for electrically connecting with an external power source.

[0054] By arranging the mobile trolley, after the staff drives the mobile trolley to a designated location and starts the pump body, the medium line glue in the glue storage tank enters the medium line glue cylinder of the molding machine through the first pipe body, the pump body and the second pipe body to perform the glue adding work on the molding machine.

[0055] Compared with the need to sub-pack the medium line glue buckets and then lift them onto the machine table and pour the medium line glue into the medium line glue cylinder of the molding machine through the buckets, the present application only needs to insert the second pipe body into the medium line glue cylinder. The present application reduces the labor intensity of the staff and improves the glue adding efficiency.

[0056] At the same time, the first valve assembly and the second valve assembly arranged at the inlet and outlet of the pump body cooperate with the first connecting pipe and the second connecting pipe. When the first valve assembly communicates the first pipe body and the pump body inlet, the first valve assembly blocks the communication between the pump body inlet and the first connecting pipe and the second connecting pipe; when the first valve assembly blocks the first pipe body and the pump body inlet, the first valve assembly communicates the pump body inlet with the first connecting pipe and the second connecting pipe; when the second valve assembly blocks the second pipe body and the pump body outlet, the second valve assembly communicates the pump body outlet with the first connecting pipe and the second connecting pipe; when the second valve assembly communicates the second pipe body and the pump body outlet, the second valve assembly blocks the communication between the pump body outlet and the first connecting pipe and the second connecting.

[0057] Therefore, when the first pipe body and the second pipe body are communicated with the inlet and outlet of the pump body, the pump body pumps out the medium line glue in the glue storage tank and sends it into the medium line glue cylinder of the molding machine through the first pipe body and the second pipe body. When the first valve assembly and the second valve assembly communicate the first connecting pipe and the second connecting pipe, at this time, the first connecting pipe is communicated with the first pipe body, and the second connecting pipe is communicated with the second pipe body, which is equivalent to the first pipe body being communicated with the outlet of the pump body through the first connecting pipe, and the second pipe body being communicated with the inlet of the pump body through the second connecting pipe. When the pump body is started at this time, the pump body transports the fluid in the second pipe body to the first pipe body, that is, when the second pipe body is connected to the medium line glue tank to be unloaded, it can realize the transportation of the medium line glue in the medium line glue tank from the second pipe body to the first pipe body to realize the replenishment of the glue storage tank.

[0058] By setting the first valve assembly and the second valve assembly and cooperating with the first connecting pipe and the second connecting pipe, the conveying directions of the first pipe body and the second pipe body are changed. Therefore, it is realized that only one pump body is needed to complete the glue replenishment for the molding machine and the glue replenishment for the glue storage tank. The use of pump bodies is reduced, and the production cost is lowered.

[0059] In some embodiments, the first valve assembly includes a valve body having a channel; one end of the channel communicates with the inlet of the pump body, and the other end communicates with the first pipe body; the valve body is provided with a first opening and a second opening both communicating with the channel; the first opening and the second opening are respectively connected to the first pipe body and the second pipe body in a one-to-one correspondence; two valve plates are provided in the valve body; each valve plate can rotate in the channel, and the valve plate can rotate to block or open the channel; and the two valve plates can rotate to respectively block or open the first opening and the second opening in a one-to-one correspondence. By setting two valve plates, the first connecting pipe, the second connecting pipe, the first pipe body, and the second pipe body are blocked or connected, and the pump body can change the liquid flow direction of the first pipe body and the second pipe body. The structure of the first valve assembly is simple and reasonably designed.

[0060] Specifically, corresponding valve bodies are also provided on the first pipe body and the second pipe body. In the state where the pump body stops working, the outflow of the middle line glue can be avoided by closing the corresponding valve parts, and the inflow of the middle line glue into the pump body can also be avoided. At the same time, it is convenient to repair the pump body after closing the valve body.

[0061] A limiting convex ring is fixedly connected in the channel. The two valve plates can be attached to and abutted against the side surface of the limiting convex ring. The two valve plates are located on both sides of the limiting convex ring, and the two valve plates are arranged at intervals along the extending direction of the channel. When the first valve plate abuts against the convex ring, it can well limit the fluid from directly flowing into the first pipe body through the channel.

[0062] The shape of the valve plate matches the cross-section of the channel, but the size of the valve plate is smaller than the cross-section size of the channel.

[0063] Two grooves for the two valve plates to be snapped into are provided on the inner side wall of the channel. The first opening and the second opening are respectively opened at the bottoms of the two grooves; the edges of the two valve plates can be respectively attached to and abutted against the edges of the first opening and the second opening.

[0064] Specifically, the two valve plates can respectively cover the first opening and the second opening in a one-to-one correspondence. Each valve plate can rotate in the channel through a rotating shaft. One end of the rotating shaft passes through the channel and is located outside the valve body, and a handle is connected to this end. The staff drives the valve plate to rotate by rotating the handle to block or connect the channel.

[0065] In some embodiments, the structures of the first valve assembly and the second valve assembly are the same. The same structure can reduce the use of part types and is also convenient for maintenance work.

[0066] In some embodiments, an opening is provided at the top of the glue storage tank, and a cover body is provided on the opening, and a liquid level sensor is fixedly arranged on the cover body. Covering the cover body can reduce the entry of dust and impurities into the glue storage tank and affect the quality of the center line glue. Setting the liquid level sensor can detect the change of the liquid level in the glue storage tank, which is convenient for reminding the staff to replenish the glue storage tank.

[0067] Specifically, the liquid level sensor is an ultrasonic liquid level sensor in the market. Among them, the liquid level sensor is electrically connected to a processor, and the processor is electrically connected to a terminal device, and the terminal device can display the liquid level condition of the center line glue in the glue storage tank.

[0068] In some embodiments, the cover body and the edge of the opening are connected by a buckle. Connecting by a buckle can facilitate opening and closing the cover body, so as to facilitate the staff to observe the center line glue situation in the glue storage tank, and at the same time, it is also convenient for the staff to clean the glue storage tank.

[0069] Specifically, a clamping strip is provided at the edge of the opening, and a clamping groove for the clamping strip to be inserted into is provided on the inner wall of the cover body. The buckle connection is realized through the cooperation of the clamping strip and the clamping groove, and its structure is simple and the design is reasonable.

[0070] In some embodiments, a ventilation hole is provided on the cover body. Providing the ventilation hole can better maintain the air pressure balance between the glue storage tank and the outside, which is convenient for the center line glue in the glue storage tank to flow out and for replenishing the glue into the glue storage tank more smoothly.

[0071] Specifically, handles that cooperate with each other are provided on both the cover body and the glue storage tank. Setting the handles can facilitate the staff to open and close the cover body.

[0072] In some embodiments, a liquid level tube is provided on the side of the glue storage tank; one end of the liquid level tube is communicated with the lower part of the glue storage tank, and the other end is communicated with the upper part of the glue storage tank. Setting the liquid level tube can facilitate the staff to more intuitively observe the liquid level condition of the center line glue in the glue storage tank.

[0073] In some embodiments, the pump body 2 includes a housing 26 having a chamber, a drive shaft 22 that can reciprocate in the chamber, a diaphragm 263 that divides the chamber into a first region 261 and a second region 262, and a drive member for moving the drive shaft 22; the edge of the diaphragm 263 is hermetically connected to the inner wall of the chamber; the drive shaft 22 is fixedly connected to the diaphragm 263; the drive member is fixedly connected to the housing 26; both the inlet and outlet of the pump body 2 are communicated with the first region 261.

[0074] In some embodiments, the driving member includes a driving motor 21; a rack 23 of the n-type is provided on the driving shaft 22, and both ends of the rack 23 are fixedly connected to the driving shaft 22. An engaging area 24 is formed by enclosing the rack 23 and the driving shaft 22. Teeth are provided on a part of the driving shaft 22 located within the engaging area 24. The output end of the driving motor 21 can be engaged with the driving shaft 22 and the rack 23 to enable the reciprocating movement of the driving shaft 22. Driving by the driving motor 21 can reduce the volume of the pump body compared with driving by a hydraulic cylinder.

[0075] Specifically, a half gear is provided on the output end of the driving motor 21, that is, the output end of the driving motor 21 is cylindrical, and teeth meshing with the driving shaft 22 and the rack 23 are distributed on half of the circumference of the output end. The output end 25 can be intermittently engaged with the driving shaft 22 and the rack 23 for driving, so that the intermittent movement of the driving shaft 22 is realized.

[0076] In some embodiments, the driving member includes an air valve 27 communicated with the second area 262; the air valve 27 has an air inlet 271 for communicating with an external high-pressure air source and an air outlet 272 for discharging the gas in the second area 262; the air valve 27 is fixedly connected to the housing 26. By introducing high-pressure gas into the second area 262, the diaphragm 263 bulges towards the first area 261. The diaphragm 263 squeezes the liquid in the first area 261, and the liquid in the first area 261 moves towards the outlet of the pump body after being squeezed, realizing the pumping of the liquid. By the action of high-pressure gas on the diaphragm 263, the force on the diaphragm 263 is uniform when it bulges, avoiding the situation of local damage of the diaphragm 263 due to uneven force, and improving the service life of the diaphragm 263.

[0077] Specifically, the air outlet 272 is communicated with a negative pressure pipe for pumping out the gas in the second area 262, and at the same time making the diaphragm 263 bulge towards the second area 262. Therefore, the pressure in the first area 261 decreases, and the liquid flows into the first area 261 from the pump body inlet, realizing the suction function of the pump body.

[0078] Specifically, diaphragms 263 are provided at both ends of the driving shaft 22. The housing 26 has two corresponding chambers. The second areas 262 of the two chambers are separated by a partition 264. The driving shaft 22 passes through the partition 264, and is slidable relative to the partition 264 and is sealed with the partition 264.

[0079] Such as Figures 6 to 8As shown, the air valve 27 includes a valve seat 277 and a valve core 278. The valve seat 277 is successively provided with a first exhaust passage 273, a first commutation passage 274, a second commutation passage 275, and a second exhaust passage 276 from left to right. The valve core 278 has a first working position 2781 and a second working position 2782. When the valve core 278 is located at the first working position 2781, the rod 29 on the right diaphragm 263 abuts against the right side of the valve core 278. At this time, the first exhaust valve 27 communicates with the exhaust port 272, and the first commutation passage 274 communicates with the exhaust port 272 through the connection passage 28. The second commutation passage 275 communicates with the air inlet 271, and the second exhaust passage 276 is blocked. At this time, high-pressure gas is injected into the second area 262 on the right side, and the right diaphragm 263 bulges to the right, squeezing the first area 261 on the right side so that the liquid in the first area 261 on the right side flows out from the outlet of the pump body. When the right diaphragm 263 bulges to the right, the rod 29 on the right side leaves the valve core 278, and at this time, the valve core 278 is still located at the first working position 2781. The right diaphragm 263 drives the rod 29 to move to the right, and the rod 29 moving to the right drives the left diaphragm 263 to bulge to the right. The volume of the first area 261 on the left side will increase as the left diaphragm 263 moves to the right, and the liquid is sucked into the first area 261 on the left side. As the driving rod continues to move to the right, the rod 29 on the left diaphragm 263 moves to the right and abuts against the left side of the valve core 278, and pushes the valve core 278 to move to the right to the second working position 2782.

[0080] When the valve core 278 is in the second working position 2782, the rod 29 on the left diaphragm 263 abuts against the left side of the valve core 278; at this time, the second exhaust valve 27 is connected to the exhaust port 272, and the second commutation channel 275 is connected to the exhaust port 272 through the connection channel 28; the first commutation channel 274 is connected to the air inlet 271, and the first exhaust channel 273 is blocked. At this time, the high-pressure gas is injected into the second area 262 on the left side, and the left diaphragm 263 bulges to the left, squeezing the first area 261 on the left side so that the liquid in the first area 261 on the left side flows out from the outlet of the pump body. When the left diaphragm 263 bulges to the left, the left rod 29 leaves the valve core 278, and at this time the valve core 278 is still in the second working position 2782. The left diaphragm 263 drives the rod 29 to move to the left, and the rod 29 moving to the left drives the right diaphragm 263 to bulge to the left. The volume of the first area 261 on the right side will increase as the right diaphragm 263 moves to the left, and the liquid is sucked into the first area 261 on the right side. As the driving rod continues to move to the left, the rod 29 on the right diaphragm 263 moves to the left and abuts against the right side of the valve core 278, and pushes the valve core 278 to move to the right to the first working position 2781. The valve core 278 starts to repeat the above actions in the first working position 2781, and so on, realizing the reciprocating motion of the drive shaft, and further realizing the pumping and suction of the liquid. By setting the air valve 27, the air intake and exhaust of the two second areas 262 are cleverly realized. The structure of the air valve 27 is simple, reliable in adaptation, and the working position of the valve core 278 is changed by the reciprocating rod 29.

[0081] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, replacements, and variations to the above embodiments within the scope of the present invention.

Claims

1. A center line glue adding device for a molding machine, characterized in that, Comprising: A glue storage tank for storing center line glue, a through hole is opened at the bottom of the glue storage tank, and the through hole is communicated with a first pipe body; A pump body, an inlet and an outlet of the pump body are respectively connected with a first valve component group and a second valve component group; the first valve component group is communicated with the first pipe body; the second valve component group is communicated with a second pipe body; The first valve component group is communicated with the second valve component group through a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is communicated with the first pipe body, and the other end is communicated with the outlet of the pump body; one end of the second connecting pipe is communicated with the second pipe body, and the other end is communicated with the inlet of the pump body; A mobile trolley, both the glue storage tank and the pump body are fixedly connected to the mobile trolley.

2. The gluing device according to claim 1, characterized in that, The first valve assembly includes a valve body having a channel; one end of the channel is communicated with the inlet of the pump body, and the other end is communicated with the first pipe body; the valve body is provided with a first opening and a second opening both communicated with the channel; the first opening and the second opening are respectively connected to the first pipe body and the second pipe body in a one-to-one correspondence; two valve plates are arranged in the valve body; each valve plate can rotate in the channel, and the valve plate can rotate to block or open the channel; and the two valve plates can rotate to respectively block or open the first opening and the second opening in a one-to-one correspondence.

3. The gluing device according to claim 2, characterized in that, The structures of the first valve assembly and the second valve assembly are the same.

4. The gluing device according to claim 1, characterized in that, An opening is opened at the top of the glue storage tank, a cover body is covered on the opening, and a liquid level sensor is fixedly arranged on the cover body.

5. The gluing device according to claim 4, characterized in that, The cover body and the edge of the opening are connected by a buckle.

6. The glue adding device according to claim 5, wherein A ventilation hole is opened on the cover body.

7. The gluing device according to claim 1, wherein, A liquid level pipe is arranged on the side surface of the glue storage tank; one end of the liquid level pipe is communicated with the lower part of the glue storage tank, and the other end is communicated with the upper part of the glue storage tank.

8. The gluing device according to any one of claims 1-7, characterized in that, The pump body includes a housing having a chamber, a drive shaft that can reciprocate in the chamber, a diaphragm that divides the chamber into a first region and a second region, and a drive member for driving the drive shaft to move; the edge of the diaphragm is hermetically connected to the inner wall of the chamber; the drive shaft is fixedly connected to the diaphragm; the drive member is fixedly connected to the housing; the inlet and the outlet of the pump body are both communicated with the first region.

9. The glue adding device according to claim 8, wherein, The drive member includes a drive motor; an n-shaped rack is arranged on the drive shaft, both ends of the rack are fixedly connected to the drive shaft, the rack and the drive shaft enclose a meshing region, teeth are arranged on a part of the drive shaft located in the meshing region, and the output end of the drive motor can be meshed with the drive shaft and the rack to drive the drive shaft to reciprocate.

10. The gluing device according to claim 8, characterized in that, The drive member includes an air valve communicated with the second region; the air valve has an air inlet for communicating with an external high-pressure air source and an air outlet for discharging the gas in the second region; the air valve is fixedly connected to the housing.

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