Screw valve of dispensing machine

Abstract

The utility model provides a screw valve of a dispensing machine. The screw valve comprises a valve body and a dispensing unit, a first cavity and a second cavity which are independent from each other are formed in the valve body through a partition layer, the first cavity is used for injecting first glue, the second cavity is used for injecting second glue, and a first needle head communicated with the first cavity and a second needle head communicated with the second cavity are arranged outside the valve body; the dispensing unit comprises a screw rod and a driving part, the screw rod is rotatably arranged on the valve body and sequentially penetrates through the first cavity, the separation layer and the second cavity, and the driving part is connected to the screw rod and used for driving the screw rod to circumferentially rotate relative to the valve body; and when the screw rod circumferentially rotates relative to the valve body, the first glue is extruded out of the first needle head and / or the second glue is extruded out of the second needle head. According to the screw valve of the dispenser, dispensing of two kinds of glue can be achieved, in addition, replacement of a new valve or shutdown for cleaning and glue replacement is not needed during dispensing, and therefore the production capacity can be improved.

Description

Technical Field

[0001] This application relates to the field of dispensing technology, and more specifically, to a screw valve for a dispensing machine. Background Technology

[0002] The screw valve for dispensing machines is widely used in fields such as electronics and automotive machinery.

[0003] The screw valve of the dispensing machine consists of a screw, valve body, needle, and glue reservoir. Its working principle is as follows: glue is injected into the valve from the glue reservoir, and then the screw in the valve body rotates and pushes the glue to be squeezed out from the needle to achieve dispensing.

[0004] Currently, most dispensing machines use a single screw valve to drive the dispensing of a single type of adhesive. Therefore, when the dispensing process requires two types of adhesive, a new valve is usually added, or the machine is shut down for cleaning and adhesive replacement to achieve dispensing of the two different adhesives. However, replacing the valve or shutting down for cleaning and adhesive replacement will affect production efficiency and reduce production capacity. Utility Model Content

[0005] This application provides at least one dispensing machine screw valve that can be driven by a single screw to dispense different types of adhesives. This dispensing machine screw valve can dispense two types of adhesives, and there is no need to replace the valve or stop the machine to clean and change the adhesive during dispensing, which helps to improve production capacity.

[0006] This application provides a screw valve for a dispensing machine, including: a valve body and a dispensing unit;

[0007] The valve body is internally divided into a first cavity and a second cavity, which are independent of each other. The first cavity is used to inject the first glue, and the second cavity is used to inject the second glue. The valve body is externally provided with a first needle that communicates with the first cavity and a second needle that communicates with the second cavity.

[0008] The dispensing unit includes a screw and a drive unit. The screw is rotatably disposed on the valve body and passes through the first cavity, the partition layer and the second cavity in sequence. The drive unit is connected to the screw and is used to drive the screw to rotate circumferentially relative to the valve body.

[0009] When the screw rotates circumferentially relative to the valve body, the first glue is squeezed out from the first needle and / or the second glue is squeezed out from the second needle.

[0010] In one alternative embodiment, the first cavity is located on the top and side surfaces of the second cavity.

[0011] In one alternative embodiment, a seal is provided between the screw and the partition layer.

[0012] In one alternative embodiment, the seal is a shape memory metal sealing ring.

[0013] In one alternative implementation, the driving element is a cylinder or an electric motor.

[0014] In one optional embodiment, the dispensing machine screw valve further includes: a glue supply unit;

[0015] The glue dispensing unit includes a first glue dispenser and a second glue dispenser. The first glue dispenser is connected to the first cavity and is used to inject a first glue into the first cavity. The second glue dispenser is connected to the second cavity and is used to inject a second glue into the second cavity.

[0016] When the first glue dispenser injects the first glue into the first cavity and the screw rotates circumferentially relative to the valve body, the first glue is squeezed out from the first needle.

[0017] As the second glue dispenser injects the second glue into the second cavity and the screw rotates circumferentially relative to the valve body, the second glue is squeezed out from the second needle.

[0018] In one optional embodiment, the first applicator includes a first glue tube and a first power assembly. The first glue tube is connected to the first cavity and is used to store the first glue. The first power assembly is disposed on the first glue tube and is used to act on the first glue tube to inject the first glue into the first cavity.

[0019] The second glue dispenser includes a second glue tube and a second power assembly. The second glue tube is connected to the second cavity and is used to store the second glue. The second power assembly is disposed on the second glue tube and is used to act on the second glue tube to inject the second glue into the second cavity.

[0020] In one alternative embodiment, both the first power assembly and the second power assembly include a piston and a pressure member that drives the piston to move.

[0021] In one alternative embodiment, the pressure element is a pneumatic hose.

[0022] In one optional embodiment, the dispensing machine screw valve further includes: a controller;

[0023] The controller is electrically connected to the drive unit, the first glue dispenser, and the second glue dispenser, respectively, and is used to control the drive unit, the first glue dispenser, and the second glue dispenser so that the first glue is squeezed out from the first needle and / or the second glue is squeezed out from the second needle.

[0024] The above-mentioned technical solution of this application has the following beneficial technical effects:

[0025] The screw valve of the dispensing machine according to this application embodiment has two cavities for storing different adhesives and two needles respectively communicating with the two cavities. The screw passes through both cavities simultaneously, allowing it to rotate within both cavities at the same time. This enables the different adhesives to be extruded from different needles, thus achieving dispensing of two different adhesives. Furthermore, compared to the prior art, this screw valve eliminates the need to replace the valve or stop the machine for cleaning and adhesive replacement during dispensing, allowing for continuous operation and improving production capacity.

[0026] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a dispensing machine screw valve provided in an embodiment of this application is shown;

[0029] Figure label:

[0030] 10. Valve body; 11. Separator layer; 12. First cavity; 13. Second cavity; 14. First needle; 15. Second needle; 20. Screw; 30. Drive component; 40. Seal; 50. First applicator; 51. First tubing; 52. First piston; 53. First pressure component; 60. Second applicator; 61. Second tubing; 62. Second piston; 63. Second pressure component. Detailed Implementation

[0031] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0032] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] refer to Figure 1 The image shows a dispensing machine screw 20 valve, which includes a valve body 10 and a dispensing unit.

[0037] The valve body 10 has an internal partition layer 11 that divides the interior of the valve body 10 into two independent cavities: a first cavity 12 and a second cavity 13. The first cavity 12 is used to inject a first adhesive, and the second cavity 13 is used to inject a second adhesive different from the first adhesive. The valve body 10 has an external first needle 14 and a second needle 15. The first needle 14 is connected to the first cavity 12, and the second needle 15 is connected to the second cavity 13. The valve body 10 has a sidewall with a first inlet, a second inlet, a first outlet, and a second outlet. The first inlet is used to inject the first adhesive into the first cavity 12, the second inlet is used to inject the first adhesive into the second cavity 13, the first outlet connects the first needle 14 to the first cavity 12, and the second outlet connects the second needle 15 to the second cavity 13.

[0038] The dispensing unit includes a screw 20 and a drive unit 30. The screw 20 is mounted on the valve body 10 and can rotate circumferentially relative to the valve body 10. During installation, the screw 20 passes sequentially from bottom to top through the first cavity 12, the partition layer 11, the second cavity 13, and the top plate of the valve body 10. The drive unit 30 can be mounted on the valve body 10 or other objects fixed relative to the valve body 10. The drive unit 30 is connected to the end of the screw 20 that extends outside the valve body 10 and is used to drive the screw 20 to rotate circumferentially relative to the valve body 10. In specific configurations, the drive unit 30 can be a cylinder or a motor, etc.

[0039] According to the above scheme, when the screw 20 of the dispensing machine rotates circumferentially relative to the valve body 10, the screw 20 can simultaneously rotate within the first cavity 12 and the second cavity 13. This allows the screw 20 to drive the first and second adhesives to flow to their respective first and second discharge ports, thereby extruding the first adhesive from the first needle 14 and the second adhesive from the second needle 15, thus achieving dispensing of the first and second adhesives. Of course, in specific implementations, the screw 20 valve of the dispensing machine can also dispense either the first or second adhesive independently. For example, when the external glue dispensing device injects the first glue into the first cavity 12 but not the second glue into the second cavity 13, the screw 20 rotates circumferentially relative to the valve body 10, which only squeezes the first glue out from the first needle 14. When the external glue dispensing device injects the second glue into the second cavity 13 but not the first glue into the first cavity 12, the screw 20 rotates circumferentially relative to the valve body 10, which only squeezes the second glue out from the second needle 15.

[0040] refer to Figure 1In some embodiments, the first cavity 12 is located on the top and side surfaces of the second cavity 13. For example, the partition layer 11 can adopt an L-shaped plate structure, which, together with the side plate and bottom plate of the valve body 10, forms the first cavity 12, and the L-shaped plate structure, together with the side plate, top plate, and bottom plate of the valve body 10, forms the second cavity 13, such that the first cavity 12 is located on the top and side surfaces of the second cavity 13. Of course, the partition layer 11 can also adopt other shapes, such as a circular tube structure, a square tube structure, etc.

[0041] refer to Figure 1 In some embodiments, the first needle 14 and the second needle 15 are arranged side by side at the bottom of the valve body 10. This arrangement allows for the application of two different adhesives at different locations or simultaneously to be completed in one go, reducing the time required for equipment movement and adjustment. In addition, since both needles are located at the bottom of the valve body 10, the adhesive in the needles can flow out under gravity, preventing the adhesive from solidifying in the needles and causing blockages.

[0042] In some embodiments, a seal 40 is provided between the screw 20 and the separator layer 11. Specifically, the seal 40 can be a sealing ring, which can achieve a seal between the screw 20 and the separator layer 11, preventing the first adhesive and the second adhesive from mixing and affecting the dispensing effect. Similarly, the same or similar seal 40 can also be provided between the screw 20 and the valve body 10 to prevent adhesive leakage.

[0043] Furthermore, the seal 40 can be a shape memory metal (MMM) ring. MMM rings possess shape memory properties, meaning they can be shaped at high temperatures and return to their original shape after cooling. This characteristic allows the seal to maintain its sealing effect even at high temperatures and prevents deformation due to temperature changes. Additionally, MMM rings exhibit superelasticity, meaning they can undergo significant deformation under external force, but quickly return to their original shape after the force is removed. This characteristic allows the seal to maintain a seal under pressure, preventing leakage. In specific applications, the seal 40 can be made of an alloy with shape memory properties (such as nickel-titanium alloy), or it can be an alloy with shape memory properties embedded within a rubber seal.

[0044] In some embodiments, the screw 20 valve of the dispensing machine further includes a dispensing unit. The dispensing unit includes a first dispensing nozzle 50 and a second dispensing nozzle 60. The first dispensing nozzle 50 is connected to the first cavity 12 and is used to inject a first adhesive into the first cavity 12. The second dispensing nozzle 60 is connected to the second cavity 13 and is used to inject a second adhesive into the second cavity 13. This configuration enables the injection of the first adhesive into the first cavity 12 and the injection of the second adhesive into the second cavity 13.

[0045] In some embodiments, the first dispensing device 50 includes a first adhesive tube 51 and a first power assembly. The first adhesive tube 51 is connected to the first cavity 12 through a first inlet and is used to store the first adhesive. The first power assembly is disposed on the first adhesive tube 51 and is used to act on the first adhesive tube 51 to inject the first adhesive into the first cavity 12. The second dispensing device 60 includes a second adhesive tube 61 and a second power assembly. The second adhesive tube 61 is connected to the second cavity 13 through a second inlet and is used to store the second adhesive. The second power assembly is disposed on the second adhesive tube 61 and is used to act on the second adhesive tube 61 to inject the second adhesive into the second cavity 13. Specifically, both the first power assembly and the second power assembly include a piston and a pressure member for driving the piston to move. For example, the first power assembly includes a first piston 52 and a first pressure member 53. The first piston 52 is movably disposed within the first tubing 51. When the first piston 52 moves within the first tubing 51, it can squeeze the first adhesive and inject it into the first cavity 12. The first pressure member 53 is disposed within the first tubing 51 and is used to drive the first piston 52 to move within the first tubing 51. The second power assembly includes a second piston 62 and a second pressure member 63. The second piston 62 is movably disposed within the second tubing 61. When the second piston 62 moves within the second tubing 61, it can squeeze the second adhesive and inject it into the second cavity 13. The second pressure member 63 is disposed within the second tubing 61 and is used to drive the second piston 62 to move within the second tubing 61. In specific configurations, the first pressure member 53 and the second pressure member 63 can be pneumatic pipes, pneumatic push rods, electric push rods, etc.

[0046] In some embodiments, when the first applicator 50 injects the first adhesive into the first cavity 12 and the screw 20 rotates circumferentially relative to the valve body 10, the first adhesive is extruded from the first needle 14. When the second applicator 60 injects the second adhesive into the second cavity 13 and the screw 20 rotates circumferentially relative to the valve body 10, the second adhesive is extruded from the second needle 15. That is, when the screw 20 rotates circumferentially relative to the valve body 10, controlling the first applicator 50 to inject the first adhesive into the first cavity 12 will cause the first adhesive to be extruded from the first needle 14. When the screw 20 rotates circumferentially relative to the valve body 10, controlling the second applicator 60 to inject the second adhesive into the second cavity 13 will cause the second adhesive to be extruded from the second needle 15.

[0047] In some embodiments, the screw 20 valve of the dispensing machine further includes a controller (not shown in the figure). The controller is electrically connected to the drive 30, the first dispenser 50 (first pressure element 53), and the second dispenser 60 (second pressure element 63), respectively. The controller is used to control the drive 30, the first dispenser 50, and the second dispenser 60 to cause the first glue to be extruded from the first needle 14 and / or the second glue to be extruded from the second needle 15.

[0048] The dispensing machine screw 20 valve of this application embodiment has three working modes, namely the first working mode, the second working mode and the third working mode.

[0049] When the first working mode is adopted, the controller controls the operation of the first pressure component 53 and the drive component 30. During operation, the first pressure component 53 drives the first piston 52 to move in the first glue tube 51, thereby squeezing the first glue and injecting it into the first cavity 12. The drive component 30 drives the screw 20 to rotate circumferentially relative to the valve body 10, so that the first glue is squeezed out from the first needle 14 to achieve dispensing of the first glue.

[0050] In the second working mode, the controller controls the operation of the second pressure component 63 and the drive component 30. During operation, the second pressure component 63 drives the second piston 62 to move in the second tube 61, thereby squeezing the second adhesive and injecting it into the second cavity 13. The drive component 30 drives the screw 20 to rotate circumferentially relative to the valve body 10, so that the second adhesive is squeezed out from the second needle 15 to achieve dispensing of the second adhesive.

[0051] In the third working mode, the controller controls the operation of the first pressure component 53, the second pressure component 63, and the drive component 30. During operation, the first pressure component 53 drives the first piston 52 to move in the first glue tube 51, thereby squeezing the first glue and injecting it into the first cavity 12. The second pressure component 63 drives the second piston 62 to move in the second glue tube 61, thereby squeezing the second glue and injecting it into the second cavity 13. The drive component 30 drives the screw 20 to rotate circumferentially relative to the valve body 10, so that the first glue is squeezed out from the first needle 14 and the second glue is squeezed out from the second needle 15, so as to simultaneously dispense the first glue and the second glue.

[0052] The dispensing machine screw valve 20 of this application embodiment has a valve body 10 with two cavities for storing different adhesives and two needles respectively communicating with the two cavities. The screw 20 passes through both cavities simultaneously, allowing it to rotate within both cavities at the same time. This enables different adhesives to be extruded from different needles, thus achieving dispensing of two different adhesives. Furthermore, compared to the prior art, this dispensing machine screw valve 20 does not require replacement with a new valve or machine shutdown for cleaning and adhesive replacement during dispensing. This allows for continuous operation, thereby improving production capacity.

[0053] One or more embodiments in this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this specification should be included within the protection scope of this application.

[0054] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A screw valve for a dispensing machine, characterized in that, The screw valve of the dispensing machine includes: a valve body and a dispensing unit; The valve body is internally divided into a first cavity and a second cavity, which are independent of each other. The first cavity is used to inject the first glue, and the second cavity is used to inject the second glue. The valve body is externally provided with a first needle that communicates with the first cavity and a second needle that communicates with the second cavity. The dispensing unit includes a screw and a drive unit. The screw is rotatably disposed on the valve body and passes through the first cavity, the partition layer and the second cavity in sequence. The drive unit is connected to the screw and is used to drive the screw to rotate circumferentially relative to the valve body. When the screw rotates circumferentially relative to the valve body, the first glue is squeezed out from the first needle and / or the second glue is squeezed out from the second needle.

2. The screw valve for a dispensing machine according to claim 1, characterized in that, The first cavity is located on the top and side surfaces of the second cavity.

3. The screw valve for a dispensing machine according to claim 1, characterized in that, A seal is provided between the screw and the partition layer.

4. The screw valve for a dispensing machine according to claim 3, characterized in that, The sealing element is a shape memory metal sealing ring.

5. The screw valve for a dispensing machine according to claim 1, characterized in that, The driving component is a cylinder or an electric motor.

6. The screw valve for a dispensing machine according to claim 1, characterized in that, The screw valve of the dispensing machine also includes: a glue dispensing unit; The glue dispensing unit includes a first glue dispenser and a second glue dispenser. The first glue dispenser is connected to the first cavity and is used to inject a first glue into the first cavity. The second glue dispenser is connected to the second cavity and is used to inject a second glue into the second cavity. When the first glue dispenser injects the first glue into the first cavity and the screw rotates circumferentially relative to the valve body, the first glue is squeezed out from the first needle. As the second glue dispenser injects the second glue into the second cavity and the screw rotates circumferentially relative to the valve body, the second glue is squeezed out from the second needle.

7. The screw valve for a dispensing machine according to claim 6, characterized in that, The first glue applicator includes a first glue tube and a first power assembly. The first glue tube is connected to the first cavity and is used to store the first glue. The first power assembly is disposed on the first glue tube and is used to act on the first glue tube to inject the first glue into the first cavity. The second glue dispenser includes a second glue tube and a second power assembly. The second glue tube is connected to the second cavity and is used to store the second glue. The second power assembly is disposed on the second glue tube and is used to act on the second glue tube to inject the second glue into the second cavity.

8. The screw valve for a dispensing machine according to claim 7, characterized in that, Both the first power assembly and the second power assembly include a piston and a pressure component that drives the piston to move.

9. The screw valve for a dispensing machine according to claim 8, characterized in that, The pressure component is a pneumatic hose.

10. The screw valve for a dispensing machine according to claim 6, characterized in that, The screw valve of the dispensing machine also includes: a controller; The controller is electrically connected to the drive unit, the first glue dispenser, and the second glue dispenser, respectively, and is used to control the drive unit, the first glue dispenser, and the second glue dispenser so that the first glue is squeezed out from the first needle and / or the second glue is squeezed out from the second needle.

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