Quantifiable glue supply device for hot melt glue machine

Abstract

The utility model discloses a kind of quantifiable glue supply devices for hot melt glue machine, including shell, glue outlet is provided on the bottom end of shell, outlet is provided with outlet check valve in glue outlet, the bottom end outer wall of one side of shell is provided with glue inlet, inlet is provided with inlet check valve in glue inlet, the sidewall of both ends of shell is provided with electric telescopic rod, the telescopic shaft of two electric telescopic rods is provided with connecting plate, the bottom end of two connecting plates is provided with connecting rod, the bottom end of two connecting rods is connected with same first piston, in the utility model, by setting inlet check valve at glue inlet, and outlet check valve is set to glue outlet, effectively prevent glue solution backflow, ensure quantitative accuracy, simultaneously, drive first piston in combination with electric telescopic rod, along with the piston movement of screw rod driving second piston in shell to extract and extrude, the consistency of glue solution amount extracted by glue inlet and glue solution amount excluded by glue outlet is realized, further ensure the accuracy of quantitative.

Description

Technical Field

[0001] This utility model relates to the field of glue supply device technology, and in particular to a quantitative glue supply device for a hot melt glue machine. Background Technology

[0002] Utility model CN222369496U relates to the field of glue supply devices, disclosing a mechanically quantifiable glue supply device for a hot melt glue machine. This utility model includes: a housing; a propulsion mechanism is disposed within the housing; a glue inlet is fixedly connected to the top of the housing; a glue outlet is fixedly connected to one side of the housing; a device box is fixedly connected to the bottom of the housing; a second rotating rod is connected inside the device box; an internally threaded sleeve is rotatably connected inside the device box; the second rotating rod is drivingly connected to the internally threaded sleeve; one end of the second rotating rod extends outside the device box; a second rotating handle is fixedly connected to one end of the second rotating rod; and a threaded rod is internally threaded onto the internally threaded sleeve. This utility model allows for precise control of the amount of glue sprayed during use, avoiding situations where too much or too little glue is sprayed during operation, thus improving work quality.

[0003] After searching, it was found that the existing technology has certain defects. Due to the lack of valves at the glue inlet and outlet, the glue is prone to leakage when hot melt glue is poured into the equipment housing and when the push block moves to squeeze the hot melt glue out. The quantitative effect is inaccurate. In addition, the cooperation between the gear and rack makes the movement of the push block cumbersome. Furthermore, the gear and rack lack a locking mechanism, which is not conducive to adjusting the amount of hot melt glue. Therefore, a quantitative glue supply device for hot melt glue machines is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide a quantitative glue supply device for a hot melt glue machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quantifiable glue supply device for a hot melt glue machine, comprising a housing, a glue outlet at the bottom of the housing, a liquid discharge check valve inside the glue outlet, a glue inlet on the outer wall of one side of the bottom of the housing, a liquid inlet check valve inside the glue inlet, electric telescopic rods on both side walls of the housing, connecting plates on the telescopic shafts of the two electric telescopic rods, connecting rods at the bottom of the two connecting plates, and a first piston connected to the bottom of the two connecting rods. The first piston is slidably connected inside the housing, and a screw is threadedly connected to the center of the first piston. A knob is connected to one end of the screw outside the housing, and a second piston is movably connected to the other end of the screw. The second piston is slidably connected inside the housing near the glue outlet.

[0006] Preferably, both the outlet check valve and the inlet check valve are composed of a first ring body, a second ring body, a spring, and a valve core. The two ends of the spring are respectively connected to the first ring body and the valve core. The end of the valve core away from the spring is conical and inserted into one end of the second ring body. The valve core of the outlet check valve points towards the inside of the housing from the end away from the spring, and the valve core of the inlet check valve points towards the outside of the housing from the end away from the spring.

[0007] Preferably, a graduated observation window is provided on the outer wall of the outer casing.

[0008] Preferably, both the outer walls of the first piston and the second piston are fitted with sealing rings, which are sealed to the inner wall of the outer shell.

[0009] Preferably, a threaded hole is provided at the center of the first piston, and the screw thread is adapted to fit into the threaded hole.

[0010] Preferably, a support shaft is rotatably connected to the center of the second piston. The support shaft has an inverted T-shaped cross-section and is connected to the end of the screw away from the knob.

[0011] The beneficial effects of this utility model are: This invention effectively prevents backflow of adhesive by setting a liquid inlet check valve at the glue inlet and a liquid outlet check valve at the glue outlet, ensuring accurate metering. At the same time, combined with the electric telescopic rod driving the first piston, which in turn drives the second piston to perform piston movement of extraction and compression inside the outer shell, the amount of adhesive extracted at the glue inlet is consistent with the amount of adhesive discharged at the glue outlet, further ensuring the accuracy of metering.

[0012] In this invention, the screw is threadedly connected to the first piston, and the screw is movably connected to the second piston, thereby adjusting the distance between the second piston and the first piston. This allows for the adjustment of the internal space capacity of the outer shell between the second piston and the dispensing port, and further achieves the effect of synchronously equalizing the amount of adhesive extracted and discharged during a single piston movement within the outer shell. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a quantifiable glue supply device for a hot melt glue machine proposed in this utility model; Figure 2 This is a front cross-sectional view of a quantifiable glue supply device for a hot melt glue machine proposed in this utility model. Figure 3 This is a side view cross-sectional structural diagram of a quantifiable glue supply device for a hot melt glue machine proposed in this utility model; Figure 4 This is a schematic diagram of the outlet check valve of a quantifiable glue supply device for a hot melt glue machine proposed in this utility model.

[0014] In the diagram: 1. Outer shell; 2. Glue outlet; 3. Liquid outlet check valve; 4. Glue inlet; 5. Liquid inlet check valve; 6. Electric telescopic rod; 7. Connecting plate; 8. Connecting rod; 9. First piston; 10. Screw; 11. Knob; 12. Second piston; 13. First ring; 14. Second ring; 15. Spring; 16. Valve core; 17. Scale observation window; 18. Sealing ring; 19. Threaded hole; 20. Support shaft. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-4 A quantifiable glue supply device for a hot melt glue machine includes a housing 1. A glue outlet 2 is located at the bottom of the housing 1, and a liquid discharge check valve 3 is installed inside the glue outlet 2. A glue inlet 4 is located on the outer wall of one side of the bottom of the housing 1, and a liquid inlet check valve 5 is installed inside the glue inlet 4. Electric telescopic rods 6 are installed on both side walls of the housing 1. Connecting plates 7 are installed on the telescopic shafts of both electric telescopic rods 6. Connecting rods 8 are installed at the bottom of both connecting plates 7. A first piston 9 is connected to the bottom of both connecting rods 8. The first piston 9 is slidably connected inside the housing 1. A screw 10 is threadedly connected to the center of the first piston 9. A knob 11 is connected to one end of the screw 10 outside the housing 1, and a second piston 12 is movably connected to the other end of the screw 10. The second piston 12 is slidably connected inside the housing 1 near the glue outlet 2.

[0017] By setting an inlet check valve 5 at the glue inlet 4 and an outlet check valve 3 at the glue outlet 2, backflow of glue is effectively prevented, ensuring quantitative accuracy. At the same time, combined with the electric telescopic rod 6 driving the first piston 9, together with the screw 10 driving the second piston 12 to perform piston movement of extraction and extrusion within the outer shell 1, the amount of glue extracted by the glue inlet 4 is kept consistent with the amount of glue discharged by the glue outlet 2, further ensuring quantitative accuracy. Through the threaded connection of the screw 10 within the first piston 9 and the movable connection between the screw 10 and the second piston 12, the distance between the second piston 12 and the first piston 9 can be adjusted, thereby achieving the effect of adjusting the internal space capacity of the outer shell 1 between the second piston 12 and the glue outlet 2. This achieves the effect of synchronous and equal adjustment of the amount of glue extracted and discharged in a single piston movement of the second piston 12 within the outer shell 1.

[0018] Specifically, in this embodiment, both the outlet check valve 3 and the inlet check valve 5 are composed of a first ring 13, a second ring 14, a spring 15, and a valve core 16. The two ends of the spring 15 are respectively connected to the first ring 13 and the valve core 16. The end of the valve core 16 facing away from the spring 15 is conical and inserted into one end of the second ring 14. The end of the valve core 16 of the outlet check valve 3 facing away from the spring 15 points towards the inside of the outer shell 1, and the end of the valve core 16 of the inlet check valve 5 facing away from the spring 15 points towards the outside of the outer shell 1. The outlet check valve 3 opens under positive pressure, and the inlet check valve 5 closes to prevent the glue from leaking out of the glue inlet 4 and ensure that the glue is smoothly discharged from the glue outlet 2. Under negative pressure, the inlet check valve 5 opens and the outlet check valve 3 closes to prevent the glue from leaking out of the glue outlet 2 and ensure that the glue is smoothly entered into the outer shell 1 from the glue inlet 4.

[0019] Specifically, in this embodiment, a graduated observation window 17 is provided on the outer wall of the outer shell 1 to facilitate observation of the amount of adhesive.

[0020] Specifically, in this embodiment, sealing rings 18 are embedded in the outer walls of both the first piston 9 and the second piston 12. The sealing rings 18 are sealed to the inner wall of the outer shell 1, and the double sealing ensures the airtightness.

[0021] Specifically, in this embodiment, a threaded hole 19 is provided at the center of the first piston 9, and the screw 10 is threadedly fitted into the threaded hole 19 to achieve precise adjustment.

[0022] Specifically, in this embodiment, a support shaft 20 is rotatably connected to the center of the second piston 12. The cross-section of the support shaft 20 is inverted T-shaped. The support shaft 20 is connected to the end of the screw 10 away from the knob 11 to ensure that the second piston 12 moves smoothly.

[0023] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A quantifiable glue supply device for a hot melt glue machine, comprising a housing (1), characterized in that: The bottom end of the outer shell (1) is provided with a glue outlet (2), and a liquid discharge check valve (3) is provided inside the glue outlet (2). The bottom outer wall of one side of the outer shell (1) is provided with a glue inlet (4), and a liquid inlet check valve (5) is provided inside the glue inlet (4). Both sides of the outer shell (1) are provided with electric telescopic rods (6). Both telescopic rods (6) are provided with connecting plates (7). Both connecting plates (7) are provided with connecting rods (8) at their bottom ends. The bottom ends of the two connecting rods (8) are connected to the same first piston (9). The first piston (9) is slidably connected inside the outer shell (1). The center of the first piston (9) is internally threaded with a screw (10). One end of the screw (10) located outside the outer shell (1) is connected with a knob (11), and the other end is movably connected with a second piston (12). The second piston (12) is slidably connected inside the outer shell (1) near the glue outlet (2).

2. The quantifiable glue supply device for a hot melt glue machine according to claim 1, characterized in that: The liquid outlet check valve (3) and the liquid inlet check valve (5) are both composed of a first ring body (13), a second ring body (14), a spring (15) and a valve core (16). The two ends of the spring (15) are connected to the first ring body (13) and the valve core (16) respectively. The end of the valve core (16) away from the spring (15) is conical and inserted into one end of the second ring body (14). The end of the valve core (16) of the liquid outlet check valve (3) away from the spring (15) points to the inside of the outer shell (1), and the end of the valve core (16) of the liquid inlet check valve (5) away from the spring (15) points to the outside of the outer shell (1).

3. The quantifiable glue supply device for a hot melt glue machine according to claim 1, characterized in that: A graduated observation window (17) is provided on the outer wall of the outer casing (1).

4. The quantifiable glue supply device for a hot melt glue machine according to claim 1, characterized in that: Both the first piston (9) and the second piston (12) have sealing rings (18) embedded in their outer walls, and the sealing rings (18) are sealed to the inner wall of the outer shell (1).

5. The quantifiable glue supply device for a hot melt glue machine according to claim 1, characterized in that: The first piston (9) has a threaded hole (19) at its center, and the screw (10) is threaded into the threaded hole (19).

6. The quantifiable glue supply device for a hot melt glue machine according to claim 1, characterized in that: The second piston (12) is rotatably connected to a support shaft (20) at its center. The support shaft (20) has an inverted T-shaped cross section and is connected to the end of the screw (10) away from the knob (11).

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