Modularized screw valve and valve body mounting structure

Abstract

The invention belongs to the technical field of dispensing equipment, and discloses a modular screw valve and a valve body mounting structure, the modular screw valve comprises: a main support having a first mounting part and a second mounting part, the first mounting part being used for mounting a glue barrel; the driving module comprises a valve seat and a rotary driving piece, and the rotary driving piece is mounted on the second mounting part through the valve seat; the valve body module is detachably connected with the valve seat, the valve body module comprises a movable assembly and a glue outlet assembly which are detachably connected, the movable assembly is installed on the valve seat and comprises a glue outlet screw rod, the glue outlet screw rod is in transmission connection with the rotary driving part, a glue outlet cavity is formed in the glue outlet assembly, and the glue outlet screw rod can stretch into the glue outlet cavity; and a glue outlet is formed in the lower end of the glue outlet cavity. The modular screw valve provided by the invention can solve the problem of difficulty in cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of dispensing equipment, and in particular to a modular screw valve and a valve body installation structure. Background Art

[0002] In the field of dispensing, there is a type of dispensing head that drives a screw to reciprocate through a cylinder, controls the opening and closing of the glue outlet through the screw, thereby realizing glue dispensing and stopping glue, and controls the glue dispensing flow rate by controlling the retraction distance of the screw. Since the screw cannot be disassembled, cleaning is very difficult.

[0003] Therefore, there is an urgent need for a modular screw valve and a valve body installation structure to solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is as follows:

[0005] 1. Provide a modular screw valve to solve the problem of difficult cleaning;

[0006] 2. Provide a valve body installation structure to improve compatibility and versatility and reduce costs.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] In the first aspect, a modular screw valve is provided, including:

[0009] A main bracket having a first installation portion and a second installation portion, wherein the first installation portion is used for installing a glue bucket;

[0010] A drive module detachably connected to the valve seat. The valve body module includes a valve seat and a rotary drive member detachably connected. The rotary drive member is installed on the second installation portion through the valve seat;

[0011] A valve body module including a movable assembly and a glue dispensing assembly. The movable assembly is installed on the valve seat. The movable assembly includes a glue dispensing screw, and the glue dispensing screw is in transmission connection with the rotary drive member. A glue dispensing cavity is provided in the glue dispensing assembly, and the glue dispensing screw can extend into the glue dispensing cavity. A glue outlet is provided at the lower end of the glue dispensing cavity.

[0012] As an optional technical solution, the movable assembly and the valve seat are inserted along the axial direction; and / or

[0013] The glue dispensing assembly and the movable assembly are inserted along the axial direction; and / or

[0014] The glue dispensing assembly is attached to the valve seat by screws.

[0015] As an alternative technical solution, the movable component further includes a linear expansion and contraction unit, the glue discharging screw is connected to the linear expansion and contraction unit, and the linear expansion and contraction unit can drive the glue discharging screw to approach or move away from the glue discharging port.

[0016] As an alternative technical solution, the glue discharging assembly includes:

[0017] A valve barrel, the glue discharging cavity is formed in the valve barrel, and the valve barrel is provided with a glue inlet communicating with the glue bucket;

[0018] A glue stopping block, which is installed at the lower end of the valve barrel, and the glue stopping block is provided with a glue stopping hole penetrating along its thickness direction, and the lower port of the glue stopping hole is the glue discharging port;

[0019] The linear expansion and contraction unit can drive the glue discharging screw to approach or move away from the glue stopping block to open or close the upper port of the glue stopping hole.

[0020] As an alternative technical solution, the glue stopping block is detachably connected to the valve barrel.

[0021] As an alternative technical solution, the glue discharging assembly further includes:

[0022] A locking collar, which is detachably connected to the valve barrel, and the locking collar and the valve barrel enclose a limiting cavity capable of accommodating the glue stopping block, and the outer peripheral part of the locking collar can be used for sleeving a dispensing nozzle.

[0023] As an alternative technical solution, the glue discharging assembly further includes:

[0024] A first sealing ring, which is embedded in the valve barrel, and the first sealing ring can seal the gap between the inner wall of the glue discharging cavity and the glue discharging screw to isolate the glue discharging cavity and the linear expansion and contraction unit from each other. There is an overflow glue cavity between the first sealing ring and the linear expansion and contraction unit, and the valve barrel is provided with an overflow glue hole, and the overflow glue cavity communicates with the outside through the overflow glue hole.

[0025] As an alternative technical solution, the movable component further includes an installation cylinder body, and the linear expansion and contraction unit includes:

[0026] A cylinder cavity formed in the installation cylinder body;

[0027] A piston, which is arranged in the cylinder cavity, and the piston divides the cylinder cavity into a first sub-cavity and a second sub-cavity that are isolated from each other. The first sub-cavity and the second sub-cavity are respectively communicated with an external air supply structure through air holes;

[0028] The glue extrusion screw penetrates through the cylinder cavity and the piston, and the glue extrusion screw can rotate relative to the piston, and the piston can drive the glue extrusion screw to move along the axial direction of the installation cylinder.

[0029] As an alternative technical solution, it further includes:

[0030] A coupling, one end of which is locked to the output end of the rotary drive;

[0031] A connecting member, including a connecting shaft portion and a connecting hole. The end of the coupling away from the rotary drive is locked to the connecting shaft portion. A limiting portion is provided at the upper end of the glue extrusion screw, and the limiting portion is slidably disposed along the axial direction in the connecting hole, and the connecting member can limit the rotational freedom of the limiting portion through the inner wall of the connecting hole.

[0032] As an alternative technical solution, the valve seat is provided with an installation through hole, the installation cylinder is inserted into the installation through hole, the installation cylinder is provided with a first communication hole communicating with the first sub-cavity and a second communication hole communicating with the second sub-cavity, the valve seat is provided with a first air hole and a second air hole, and the first air hole and the second air hole are respectively communicated with an external air supply structure;

[0033] A first air passage is formed between the outer wall of the installation cylinder and the inner wall of the installation through hole, and the first air passage communicates the first communication hole and the first air hole;

[0034] A second air passage is formed between the outer wall of the installation cylinder and the inner wall of the installation through hole, and the second air passage communicates the second communication hole and the second air hole.

[0035] As an alternative technical solution, a plurality of sealing grooves are formed on the inner wall of the installation through hole, and a second sealing ring is embedded in the sealing grooves. The second sealing ring is used to seal the gap between the outer wall of the installation cylinder and the inner wall of the installation through hole to seal the first air passage and / or the second air passage.

[0036] In a second aspect, a valve body installation structure is provided, including:

[0037] A main bracket, having a first installation portion and a second installation portion, and the first installation portion is used for installing a glue bucket;

[0038] A valve seat, installed on the second installation portion, and the valve seat can detachably install a valve body module;

[0039] A rotary drive, installed on the valve seat;

[0040] A rotary connecting member, provided at the output end of the rotary drive, and the rotary connecting member can be detachably connected to the valve body module.

[0041] Advantages of the present invention:

[0042] For the modular screw valve provided by the present invention, a first mounting portion and a second mounting portion are provided on the main bracket, which can be used to mount a glue barrel and the valve seat of the driving module respectively. The valve body module includes a movable assembly and a glue discharging assembly. The movable assembly is mounted on the valve seat, and the glue discharging screw therein is in transmission connection with a rotary driving member. The rotary driving member drives the glue discharging screw to rotate self in the glue discharging cavity, driving the glue liquid to flow out from the glue discharging port. Since the valve body module is detachably connected to the valve seat, and the glue discharging assembly is also detachably connected to the movable assembly, the movable assembly and the glue discharging assembly can be disassembled separately, and the glue discharging screw can be taken out from the glue discharging cavity, so that the staff can directly clean the glue discharging screw and the glue discharging cavity, solving the problem of difficult cleaning.

[0043] For the valve body mounting structure provided by the present invention, a first mounting portion and a second mounting portion are provided on the main bracket, which can be used to mount a glue barrel and the valve seat respectively. The valve seat can detachably mount the valve body module, and the rotary driving member can be detachably connected to the valve body module through a rotary connecting member. The above detachable mounting structural design enables the valve body mounting structure to be compatible with different types of valve body modules, improving compatibility and versatility and reducing costs. Description of the Drawings

[0044] Figure 1 is a schematic structural view of the modular screw valve provided in Embodiment 1 of the present invention;

[0045] Figure 2 is an exploded structural view of the modular screw valve provided in Embodiment 1 of the present invention;

[0046] Figure 3 is a schematic structural view of the main bracket provided in Embodiment 1 of the present invention;

[0047] Figure 4 is a partial structural cross-section of the modular screw valve provided in Embodiment 1 of the present invention Figure 1 ;

[0048] Figure 5 is a partial structural cross-section of the modular screw valve provided in Embodiment 1 of the present invention Figure 2 ;

[0049] Figure 6 is a schematic structural view of the valve seat provided in Embodiment 1 of the present invention;

[0050] Figure 7 is an exploded structural view of the valve body module provided in Embodiment 1 of the present invention;

[0051] Figure 8 is a schematic structural view of the glue stopping block provided in Embodiment 1 of the present invention;

[0052] Figure 9 It is a schematic structural diagram of the lower end cover provided in the first embodiment of the present invention;

[0053] Figure 10 It is a schematic structural diagram of the valve body installation structure provided in the second embodiment of the present invention.

[0054] In the figure:

[0055] 100, main bracket; 101, first installation part; 102, second installation part;

[0056] 200, drive module; 300, valve body module; 400, dispensing nozzle; 500, glue bucket;

[0057] 10, valve seat; 11, installation through hole; 12, sealing groove; 13, first air hole; 14, second air hole; 15, first avoidance notch; 16, second avoidance notch;

[0058] 20, rotation drive member;

[0059] 30, movable component; 31, glue discharging screw; 311, limiting part; 32, installation cylinder; 321, first communication hole; 322, second communication hole; 323, first air duct groove; 324, second air duct groove; 33, cylinder cavity; 331, first sub-cavity; 332, second sub-cavity; 34, piston; 35, upper end cover; 36, lower end cover; 361, glue overflow part; 362, glue overflow notch;

[0060] 40, glue discharging component; 41, valve cylinder; 411, glue discharging cavity; 412, glue overflow cavity; 413, glue overflow hole; 42, glue stopping block; 421, glue stopping hole; 422, upper port; 423, glue discharging port; 43, locking collar;

[0061] 51, connecting piece; 511, connecting shaft part; 512, connecting hole; 52, coupling;

[0062] 61, first sealing ring; 62, second sealing ring; 63, air nozzle; 64, glue inlet nozzle; 65, glue inlet pipe; 70, rotation connecting piece. Detailed implementation manners

[0063] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings, rather than all the structures.

[0064] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. 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.

[0065] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0066] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0067] Embodiment 1:

[0068] Please refer to Figures 1 - 9 , this embodiment provides a modular screw valve for controlling the dispensing of glue in glue dotting and glue coating. The modular screw valve includes a main bracket 100, a drive module 200, and a valve body module 300. Among them, the main bracket 100 has a first mounting portion 101 and a second mounting portion 102. The first mounting portion 101 is used for mounting a glue bucket 500, and the drive module 200 and the valve body module 300 are mounted on the second mounting portion 102.

[0069] Further, the driving module 200 includes a valve seat 10 and a rotary driving member 20. The rotary driving member 20 is installed on the second installation part 102 through the valve seat 10. The valve body module 300 includes a movable assembly 30 and a glue discharging assembly 40. The movable assembly 30 is installed on the valve seat 10. The movable assembly 30 includes a glue discharging screw 31. The glue discharging screw 31 is in transmission connection with the rotary driving member 20. A glue discharging cavity 411 is provided in the glue discharging assembly 40. The glue discharging screw 31 can extend into the glue discharging cavity 411. A glue discharging port 423 is provided at the lower end of the glue discharging cavity 411. The valve body module 300 is detachably connected to the valve seat 10, and the glue discharging assembly 40 and the movable assembly 30 are detachably connected, that is, the valve body module 300 can be detached from the valve seat 10, and the glue discharging assembly 40 and the movable assembly 30 in the valve body module 300 can also be detached from each other.

[0070] Specifically, in the modular screw valve provided in this embodiment, a first installation part 101 and a second installation part 102 are provided on the main bracket 100, which can be used to install the glue bucket 500 and the valve seat 10 of the driving module 200 respectively. The valve body module 300 includes a movable assembly 30 and a glue discharging assembly 40. The movable assembly 30 is installed on the valve seat 10. The glue discharging screw 31 therein is in transmission connection with the rotary driving member 20. The rotary driving member 20 drives the glue discharging screw 31 to rotate in the glue discharging cavity 411, driving the glue to flow out from the glue discharging port 423. Since the valve body module 300 is detachably connected to the valve seat 10, and the glue discharging assembly 40 and the movable assembly 30 are also detachably connected, the movable assembly 30 and the glue discharging assembly 40 can be detached separately, and the glue discharging screw 31 can be taken out from the glue discharging cavity 411, so that the staff can directly clean the glue discharging screw 31 and the glue discharging cavity 411, solving the problem of difficult cleaning.

[0071] For the specific structure of the main bracket 100, please refer to Figure 3 , the first installation part 101 of the main bracket 100 is set as a platform structure. On the one hand, it can carry the glue bucket 500, and on the other hand, it can clamp the glue bucket 500 through a limit buckle to prevent the glue bucket 500 from loosening; the second installation part 102 of the main bracket 100 includes a through-hole structure and a mounting plate structure. The through-hole structure allows the rotary driving member 20 to pass through and restricts the horizontal position of the rotary driving member 20, and the mounting plate structure fixes the valve seat 10 by screwing. When disassembling, the connection between the valve seat 10 and the second installation part 102 can be released by removing the screws.

[0072] For the installation structure of the driving module 200, the body of the rotary driving member 20 is locked and fixed to the upper end of the valve seat 10. The rotary driving member 20 is selected as a rotary motor, and its output shaft is in transmission connection with the glue discharging screw 31 through a coupling 52.

[0073] The movable assembly 30 in the valve body module 300 is detachably connected to the valve seat 10. In this embodiment, the movable assembly 30 and the valve seat 10 are inserted along the axial direction. Specifically, please refer toFigures 4 - 6 , the valve seat 10 is provided with an installation through hole 11. The movable component 30 includes an installation cylinder body 32. The installation cylinder body 32 is inserted into the installation through hole 11. The valve seat 10 is provided with a plurality of locking holes, and locking screws are connected to the locking holes. The locking screws can penetrate into the installation through hole 11 and press against the outer wall of the installation cylinder body 32 to lock the installation cylinder body 32 to the valve seat 10. During disassembly, first remove the locking screws, and then pull out the movable component 30 from the valve seat 10.

[0074] The glue discharging component 40 in the valve body module 300 is inserted into the movable component 30 in the axial direction. Specifically, please refer to Figure 4 , Figure 5 and Figure 7 , the glue discharging component 40 includes a valve cylinder 41. The valve cylinder 41 is inserted into the lower end of the central hole of the installation cylinder body 32. During disassembly, the valve body module 300 can be first detached from the valve seat 10 as a whole, and then the glue discharging component 40 can be pulled off and detached from the movable component 30, or the glue discharging component 40 can be directly pulled out and detached alone, with higher flexibility in disassembly and cleaning.

[0075] To improve the installation stability of the glue discharging component 40, please refer to Figure 5 , the glue discharging component 40 can also be directly locked to the valve seat 10 by screws. When disassembling, first unscrew the screws, and then the glue discharging component 40 can be disassembled by the above method, and the disassembly and cleaning are also very convenient.

[0076] The modular screw valve provided in this embodiment has a glue stopping function. The movable component 30 further includes a linear telescopic unit. The glue discharging screw 31 is connected to the linear telescopic unit. The linear telescopic unit can drive the glue discharging screw 31 to approach or move away from the glue outlet 423. When the screw moves towards the glue outlet 423, the glue outlet 423 can be closed to prevent the glue from flowing out of the glue outlet 423. When the screw moves away from the glue outlet 423, the glue outlet 423 is reopened and the glue can be discharged normally.

[0077] Specifically, please refer to Figure 4 and Figure 5, the linear expansion and contraction unit includes a cylinder cavity 33, a piston 34, an upper end cover 35, and a lower end cover 36. The cylinder cavity 33 is formed in the inner cavity of the mounting cylinder 32. The piston 34, the upper end cover 35, and the lower end cover 36 are all arranged inside the mounting cylinder 32. The piston 34 is movably arranged in the cylinder cavity 33 along the axis of the mounting cylinder 32. The piston 34 divides the cylinder cavity 33 into a first sub-cavity 331 and a second sub-cavity 332 that are isolated from each other. The upper end cover 35 closes the upper end of the first sub-cavity 331, and the lower end cover 36 closes the lower end of the second sub-cavity 332. The first sub-cavity 331 and the second sub-cavity 332 are respectively communicated with an external air supply structure through air holes. The glue discharging screw 31 penetrates through the cylinder cavity 33, the piston 34, the upper end cover 35, and the lower end cover 36. The piston 34 is rotatably sleeved on the glue discharging screw 31 through a rolling bearing. The glue discharging screw 31 can rotate relative to the piston 34, and the piston 34 can drive the glue discharging screw 31 to move along the axis of the mounting cylinder 32 to open or close the glue discharging port 423. In this embodiment, an embedded cylinder structure is adopted. On the one hand, the compactness of the structure is greatly improved, the volume of the screw valve is reduced, which is beneficial to miniaturization design. On the other hand, the linear expansion and contraction unit is arranged at the output end of the rotary drive member 20, so that the linear expansion and contraction unit can be disassembled and assembled separately, improving the convenience of disassembly and cleaning.

[0078] In order to enable the glue discharging screw 31 to rotate under the drive of the rotary drive member 20 and at the same time be able to move along the axis under the drive of the piston 34, please refer to Figure 4 , Figure 5 and Figure 7 , the modular screw valve further includes a connecting member 51. The connecting member 51 is connected between the coupling 52 and the upper end of the glue discharging screw 31. Specifically, the connecting member 51 includes a shaft connecting portion 511 and a connecting hole 512. One end of the coupling 52 is locked to the output shaft of the rotary drive member 20, and the end of the coupling 52 away from the rotary drive member 20 is locked to the shaft connecting portion 511. The upper end of the glue discharging screw 31 is provided with a limiting portion 311. The limiting portion 311 is slidably arranged in the connecting hole 512 along the axis direction, and the connecting member 51 can limit the rotational freedom of the limiting portion 311 through the inner wall of the connecting hole 512. In this embodiment, the limiting portion 311 is arranged as a rod-shaped structure with a hexagonal cross-section, and the cross-sectional shape of the connecting hole 512 is correspondingly arranged as a hexagonal structure of the same size. Therefore, when the piston 34 moves, the glue discharging screw 31 can slide relative to the connecting member 51, and when the rotary drive member 20 moves, the connecting member also can drive the glue discharging screw 31 to rotate together with the piston 34.

[0079] For the air passage connection structure of the cylinder cavity 33, please refer to Figures 4 - 6, a first communication hole 321 communicating with the first sub-chamber 331 and a second communication hole 322 communicating with the second sub-chamber 332 are provided on the installation cylinder body 32. A first air hole 13 and a second air hole 14 are provided on the valve seat 10. The first air hole 13 and the second air hole 14 are respectively communicated with an external air supply structure through a nozzle 63 and an air pipe; independent first air channel grooves 323 and second air channel grooves 324 are further provided on the outer wall of the installation cylinder body 32. A first air channel is formed between the inner wall of the first air channel groove 323 and the inner wall of the installation through hole 11. The first air channel communicates the first communication hole 321 and the first air hole 13. A second air channel is formed between the inner wall of the second air channel groove 324 and the inner wall of the installation through hole 11. The second air channel communicates the second communication hole 322 and the second air hole 14. It can be understood that in the present application, the first air hole 13 and the second air hole 14 for connecting the nozzles are arranged on the valve seat 10, which is more conducive to the assembly and disassembly between the valve body module 300 and the valve seat 10. The assembly and disassembly between the valve body module 300 and the valve seat 10 can be realized at any time. Even if the nozzles are not removed, the valve body module 300 can be directly removed from the valve seat 10 without any interference.

[0080] In order to separately seal the first air channel and the second air channel and prevent gas from leaking out from parts other than the first communication hole 321 and the second communication hole 322, please refer to Figures 4 - 6 , a plurality of sealing grooves 12 are formed on the inner wall of the installation through hole 11. Among them, at least one sealing groove 12 is respectively arranged on both sides of the first air channel groove 323 in the axial direction, and at least one sealing groove 12 is respectively arranged on both sides of the second air channel groove 324 in the axial direction. A second sealing ring 62 is embedded in the sealing groove 12. The second sealing ring 62 is used to block the gap between the outer wall of the installation cylinder body 32 and the inner wall of the installation through hole 11 to seal the first air channel and the second air channel and prevent gas from leaking out from parts other than the first communication hole 321 and the second communication hole 322, so as to better drive the piston 34 to move. In this embodiment, three sealing grooves 12 are formed on the inner wall of the installation through hole 11 at intervals along the axial direction. The first air channel and the second air channel are respectively arranged between two adjacent sealing grooves 12. Arranging the sealing groove 12 on the valve seat 10 instead of the installation cylinder body 32 can effectively avoid the second sealing ring 62 being scratched and damaged by the first air hole 13 and the second air hole 14 on the installation through hole 11 when the installation cylinder body 32 is inserted, and improve the reliability of the seal.

[0081] Regarding the flow path of the glue, please refer to Figure 4 , a glue outlet cavity 411 is formed in the valve cylinder 41. The valve cylinder 41 is provided with a glue inlet, and the glue inlet is communicated with a glue bucket 500 through a glue inlet nozzle 64 and a glue inlet pipe 65. A glue outlet 423 is arranged below the valve cylinder 41.

[0082] In order to avoid the glue overflowing into the cylinder cavity 33 and damaging the linear telescopic unit when the glue outlet is blocked, please refer to Figure 4 and Figure 7The glue dispensing assembly 40 further includes a first sealing ring 61, which is embedded in the valve barrel 41. The inner ring of the first sealing ring 61 abuts against the peripheral wall of the glue dispensing screw 31, thereby sealing the gap between the inner wall of the glue dispensing cavity 411 and the glue dispensing screw 31, thereby isolating the glue dispensing cavity 411 from the linear telescopic unit. It will be understood that although the inner ring of the first sealing ring 61 abuts against the peripheral wall of the glue dispensing screw 31, it does not hinder the rotation of the glue dispensing screw 31.

[0083] A glue overflow chamber 412 is provided between the first sealing ring 61 and the linear telescopic unit, and a glue overflow hole 413 is provided on the valve cylinder 41. The glue overflow chamber 412 communicates with the outside through the glue overflow hole 413. It is understood that the outside here refers to the glue overflow chamber 412, with the glue overflow chamber 412 itself being considered the inside, and the outside being considered the outside. The glue overflow hole 413 is tilted downward from the inside to the outside, ensuring that the glue flows out smoothly under the action of gravity. When the first sealing ring 61 is intact, it can prevent the glue from overflowing upward. If the first sealing ring 61 is damaged or aged, and the sealing function fails, the glue will overflow into the glue overflow chamber 412, providing a buffering effect. The glue in the glue overflow chamber 412 can be discharged from the glue overflow hole 413, preventing the glue from continuing to spread upward. At the same time, it allows staff to detect abnormal glue overflow and deal with the overflow problem in a timely manner.

[0084] Further, such as Figure 4 and Figure 9 As shown, the lower end cover 36 is inserted into the valve cylinder 41 and encloses a glue overflow cavity 412. A plurality of glue overflow portions 361 distributed circumferentially are provided below the lower end cover 36. A glue overflow notch 362 is provided at the bottom end of the glue overflow portion 361. The glue overflow portion 361 is provided with a straight wall structure, which is spaced apart from the inner hole wall of the valve cylinder 41 to increase the volume of the glue overflow cavity 412 so that it can accommodate more glue. The setting of the glue overflow notch 362 can guide the glue to flow from the inside to the outside, so that the glue can flow smoothly to the glue overflow hole 413 for discharge.

[0085] In order to provide the valve body module 300 with space for connection or contact with the outside, please refer to Figure 6 A first avoidance gap 15 and a second avoidance gap 16 are provided on the valve seat 10, wherein the first avoidance gap 15 is used to avoid the glue inlet and the glue overflow hole 413, and the glue feed nozzle 64 is passed through the first avoidance gap 15. The connection structure between the movable component 30 and the rotating drive component 20 can be exposed through the second avoidance gap 16 to facilitate disassembly and assembly operations by the staff.

[0086] For further information, please refer to Figure 4 and Figure 8, the glue discharging assembly 40 further includes a glue stopping block 42. The glue stopping block 42 is installed at the lower end of the valve barrel 41. A glue stopping hole 421 is provided through the glue stopping block 42 along its thickness direction. The lower port of the glue stopping hole 421 is the glue discharging port 423. The linear telescopic unit can drive the glue discharging screw 31 to approach or move away from the glue stopping block 42 to open or close the upper port 422 of the glue stopping hole 421. The glue stopping amount of the screw valve is determined by the moving stroke of the glue discharging screw 31 to close the glue discharging port 423. By providing the glue stopping block 42, when mass-producing modular screw valves, since the heights of the glue stopping blocks 42 in each modular screw valve are the same and the distances between their upper ports 422 and the glue discharging screw 31 are the same, there is no need to separately adjust the glue stopping amounts of each screw valve, greatly improving the consistency. Just installing the glue stopping blocks 42 of the same specification can obtain a glue valve with very good consistency in glue discharging effect, reducing the labor for debugging and improving the production efficiency.

[0087] Please refer to Figure 8 , the upper port 422 of the glue stopping hole 421 is set as a gradually expanding port or a flared port structure, which is adapted to the conical end of the glue discharging screw 31 to ensure reliable glue blocking when the glue discharging screw 31 abuts against the upper port 422 of the glue stopping hole 421.

[0088] Further, please refer to Figure 4 , the glue stopping block 42 is detachably connected to the valve barrel 41. The staff can install glue stopping blocks 42 with different thicknesses according to different glue stopping amount requirements to achieve stepless adjustment of the glue stopping amount. In this embodiment, the glue discharging assembly 40 further includes a locking collar 43. The locking collar 43 is detachably connected to the valve barrel 41 by means of clamping or the like. The locking collar 43 and the valve barrel 41 enclose a limiting cavity capable of accommodating the glue stopping block 42. At the same time, the outer peripheral part of the locking collar 43 can also be used for sleeving the dispensing nozzle 400, saving structural parts and further improving the compactness of the structure.

[0089] Embodiment Two:

[0090] Please refer to Figure 10 , this embodiment provides a valve body installation structure. The valve body installation structure includes a main bracket 100, a valve seat 10, a rotary drive member 20, and a rotary connecting member 70. Among them, the main bracket 100 has a first installation portion 101 and a second installation portion 102. The first installation portion 101 is used for installing the glue bucket 500. The valve seat 10 is installed on the second installation portion 102. The valve seat 10 can detachably install the valve body module 300. The rotary drive member 20 is installed on the valve seat 10. The rotary connecting member 70 is provided at the output end of the rotary drive member 20. The rotary connecting member 70 can be detachably connected to the valve body module 300. The above detachable installation structural design enables the valve body installation structure to be compatible with different types of valve body modules 300, improving the compatibility and versatility and reducing the cost.

[0091] Exemplarily, the rotary drive member 20 can be selected as a rotary motor.

[0092] Exemplarily, the rotary connector 70 can be selected as a coupling.

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A modular screw valve, characterized in that, Comprising: A main bracket (100) having a first mounting portion (101) and a second mounting portion (102), the first mounting portion (101) being for mounting a glue barrel (500); A drive module (200) including a valve seat (10) and a rotary drive member (20), the rotary drive member (20) being mounted on the second mounting portion (102) through the valve seat (10); A valve body module (300) detachably connected to the valve seat (10), the valve body module (300) including a movable assembly (30) and a glue discharging assembly (40) detachably connected to each other, the movable assembly (30) being mounted on the valve seat (10), the movable assembly (30) including a glue discharging screw (31), the glue discharging screw (31) being in transmission connection with the rotary drive member (20), a glue discharging cavity (411) being provided in the glue discharging assembly (40), the glue discharging screw (31) being capable of extending into the glue discharging cavity (411), and a glue discharging port (423) being provided at the lower end of the glue discharging cavity (411).

2. The modular screw valve according to claim 1, wherein, The movable assembly (30) is inserted into the valve seat (10) in the axial direction; and / or The glue discharging assembly (40) is inserted into the movable assembly (30) in the axial direction; and / or The glue discharging assembly (40) is attached to the valve seat (10) by screws.

3. The modular screw valve according to claim 1, characterized in that The movable assembly (30) further includes a linear telescoping unit, the glue discharging screw (31) being connected to the linear telescoping unit, and the linear telescoping unit being capable of driving the glue discharging screw (31) to approach or move away from the glue discharging port (423).

4. The modular screw valve according to claim 3, wherein The glue discharging assembly (40) includes: A valve cylinder (41) in which the glue discharging cavity (411) is formed, and a glue inlet communicating with the glue barrel (500) being provided on the valve cylinder (41); A glue stopping block (42) mounted at the lower end of the valve cylinder (41), a glue stopping hole (421) penetrating through the glue stopping block (42) in the thickness direction thereof being provided on the glue stopping block (42), and the lower port of the glue stopping hole (421) being the glue discharging port (423); The linear telescoping unit is capable of driving the glue discharging screw (31) to approach or move away from the glue stopping block (42) to open or close the upper port (422) of the glue stopping hole (421).

5. The modular screw valve according to claim 4, wherein The glue stopping block (42) is detachably connected to the valve cylinder (41).

6. The modular screw valve according to claim 5, wherein The glue discharging assembly (40) further includes: A locking collar (43) detachably connected to the valve cylinder (41), the locking collar (43) and the valve cylinder (41) enclosing a limiting cavity capable of accommodating the glue stopping block (42), and the outer peripheral portion of the locking collar (43) being for sleeving a dispensing nozzle (400).

7. The modular screw valve according to claim 4, wherein The glue discharging assembly (40) further includes: A first sealing ring (61) is embedded in the valve barrel (41). The first sealing ring (61) can block the gap between the inner wall of the glue discharging cavity (411) and the glue discharging screw (31) to isolate the glue discharging cavity (411) and the linear telescopic unit. An overflow glue cavity (412) is provided between the first sealing ring (61) and the linear telescopic unit. An overflow glue hole (413) is provided on the valve barrel (41), and the overflow glue cavity (412) communicates with the outside through the overflow glue hole (413).

8. The modular screw valve according to claim 3, characterized in that, The movable assembly (30) further includes an installation cylinder body (32), and the linear telescopic unit includes: A cylinder cavity (33) formed in the installation cylinder body (32); A piston (34) is arranged in the cylinder cavity (33). The piston (34) divides the cylinder cavity (33) into a first sub-cavity (331) and a second sub-cavity (332) that are isolated from each other. The first sub-cavity (331) and the second sub-cavity (332) are respectively communicated with an external air supply structure through air holes; The glue discharging screw (31) penetrates through the cylinder cavity (33) and the piston (34), and the glue discharging screw (31) can rotate relative to the piston (34), and the piston (34) can drive the glue discharging screw (31) to move along the axis direction of the installation cylinder body (32).

9. The modular screw valve according to claim 8, wherein It further includes: A coupling (52), one end of which is locked to the output end of the rotary driving member (20); A connecting member (51) includes a connecting shaft portion (511) and a connecting hole (512). One end of the coupling (52) away from the rotary driving member (20) is locked to the connecting shaft portion (511). A limiting portion (311) is provided at the upper end of the glue discharging screw (31). The limiting portion (311) is slidably arranged along the axial direction in the connecting hole (512), and the connecting member (51) can limit the rotational freedom of the limiting portion (311) through the inner wall of the connecting hole (512).

10. The modular screw valve according to claim 8, characterized in that, The valve seat (10) is provided with an installation through hole (11). The installation cylinder body (32) is inserted into the installation through hole (11). The installation cylinder body (32) is provided with a first communication hole (321) communicating with the first sub-cavity (331) and a second communication hole (322) communicating with the second sub-cavity (332). The valve seat (10) is provided with a first air hole (13) and a second air hole (14). The first air hole (13) and the second air hole (14) are respectively communicated with an external air supply structure; A first air passage is formed between the outer wall of the installation cylinder body (32) and the inner wall of the installation through hole (11). The first air passage communicates the first communication hole (321) and the first air hole (13); A second air passage is formed between the outer wall of the installation cylinder body (32) and the inner wall of the installation through hole (11). The second air passage communicates the second communication hole (322) and the second air hole (14).

11. The modular screw valve according to claim 10, wherein, A plurality of sealing grooves (12) are formed in the inner wall of the installation through hole (11), and a second sealing ring (62) is embedded in the sealing groove (12). The second sealing ring (62) is used to block the gap between the outer wall of the installation cylinder (32) and the inner wall of the installation through hole (11) to seal the first air passage and / or the second air passage.

12. A valve body installation structure, characterized in that, Comprising: A main bracket (100) having a first mounting portion (101) and a second mounting portion (102), the first mounting portion (101) being used for mounting a glue bucket (500); A valve seat (10) mounted on the second mounting portion (102), the valve seat (10) being capable of detachably mounting a valve body module (300); A rotary drive member (20) mounted on the valve seat (10); A rotary connecting member (70) provided at the output end of the rotary drive member (20), the rotary connecting member (70) being capable of detachably connecting to the valve body module (300).

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