Piston pump module for outputting hot melt adhesive at constant pressure

Abstract

The invention relates to the technical field of hot melt adhesive conveying and control equipment, in particular to a piston pump module for outputting hot melt adhesive at constant pressure. Comprising a glue path plate seat, a piston pump body is installed on the top of the glue path plate seat, a pump body air source inlet is formed in one side of the piston pump body, an air pump linkage pressure release valve is arranged on one side of the glue path plate seat and connected with the pump body air source inlet through a pipeline, and a pump body flow channel one-way check valve is arranged on the outer side of the glue path plate seat. A glue inlet and a plurality of glue outlets are formed in the glue path plate seat. By adopting a combined structure of the pressure storage cavity shaped like the air compressible principle and the one-way check valve in the glue outlet pipeline of the pump body, the problem of pressure fluctuation existing in an existing piston pump is effectively solved, hot melt glue can be conveyed more stably and efficiently, the requirement for process stability in modern industrial production is met, and the production cost is reduced. And meanwhile, the purposes of prolonging the service life of equipment and improving the production efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hot melt adhesive delivery and control equipment, and in particular to a piston pump module for hot melt adhesive with constant pressure output. Background Art

[0002] Hot melt adhesive is an adhesive material widely used in many industries, especially in packaging, clothing and footwear. The application of hot melt adhesive requires a specific hot melt adhesive pump system to ensure its uniform and stable pressure output so that it can be effectively applied in the working area. At present, the piston pump technology is widely used in the market to realize the delivery of hot melt adhesive.

[0003] However, during the operation of the piston pump, pressure fluctuations often occur due to the reciprocating motion of the piston. These problems are mainly manifested in practical applications: in each pumping cycle, the movement of the piston will cause uneven pressure in the pump chamber, especially when the piston switches, the pressure fluctuation is more obvious, which directly affects the stability and reliability of the hot melt adhesive application; due to the existence of pressure fluctuations, the pumping device is easily affected by repeated pressure changes, thereby accelerating the wear of internal parts of the pump body and reducing the service life of the equipment; pressure fluctuations will make the hot melt adhesive applied to the target area unstable, thereby affecting the bonding effect and causing product quality to decline; at the same time, it will also affect the operating efficiency of the entire production line, and may require staff to stop to inspect and maintain the pump equipment, adding some unnecessary workload. Summary of the invention

[0004] The present invention provides a piston pump module which can eliminate pressure fluctuations and realize constant pressure and stable output of hot melt adhesive liquid. By adopting the combined structure of the pressure storage cavity formed by the air compressible principle and the one-way check valve in the adhesive outlet pipeline of the pump body, the problem of pressure fluctuation existing in the existing piston pump is effectively solved, and the hot melt adhesive can be transported more stably and efficiently, meeting the requirements for process stability in modern industrial production, and at the same time, the purpose of extending the service life of the equipment and improving production efficiency is achieved.

[0005] The technical solution adopted by the present invention is: a constant pressure output hot melt adhesive piston pump module, including a glue circuit plate seat, a piston pump body is installed on the top of the glue circuit plate seat, a pump body air source inlet is provided on one side of the piston pump body, an air pump linkage pressure relief valve is provided on one side of the glue circuit plate seat, and the air pump linkage pressure relief valve is connected to the pump body air source inlet through a pipeline, a pump body flow channel one-way check valve is provided on the outer side of the glue circuit plate seat, and a glue inlet and multiple glue outlets are provided on the glue circuit plate seat.

[0006] As a further improvement of the present invention, a pressure storage cavity and a filter cavity are provided in the rubber circuit plate seat, the pressure storage cavity and the filter cavity are connected, and a pump body rubber outlet pipe is provided between the piston pump body and the pressure storage cavity.

[0007] As a further improvement of the present invention, a filter screen group is provided on the side of the rubber circuit plate seat away from the air pump linked pressure relief valve, and the filter screen group is located inside the filter screen cavity.

[0008] As a further improvement of the present invention, the piston pump main body includes a high-temperature resistant cylinder and a glue suction cylinder body, the top fixed sleeve of the glue suction cylinder body is provided with a pump body sealing seat, the high-temperature resistant cylinder and the pump body sealing seat are fixedly connected by a plurality of cylinder struts, a conversion valve seat is provided on one side of the high-temperature resistant cylinder, and a power source-air source input port is provided on the conversion valve seat, the high-temperature resistant cylinder and the glue suction cylinder body are connected through the pump body piston rod shaft, the high-temperature resistant cylinder is connected to one side of the pump body sealing seat through a conversion valve lever slide groove seat, the conversion valve lever slide groove seat is slidably connected with a conversion valve lever connected to the pump body piston rod shaft, the bottom end of the glue suction cylinder body is provided with a cylinder body hot melt glue inlet, and the upper part of the glue suction cylinder body is provided with a cylinder body hot melt glue outlet.

[0009] As a further improvement of the present invention, a conversion valve core and a conversion valve sleeve are provided inside the conversion valve seat, the bottom end of the conversion valve core is connected to a conversion valve core connecting rod, a lever magnet seat is provided inside the conversion valve seat and is sleeved on the outside of the conversion valve core connecting rod, an upper magnet seat is provided on the upper part of the conversion valve core connecting rod and is installed inside the conversion valve seat, and a lower magnet seat is provided on the lower part of the conversion valve core connecting rod and is installed inside the conversion valve seat, a conversion valve air source input port is provided on the conversion valve sleeve, a conversion valve forward air source output port and a conversion valve forward air source exhaust port are provided on the conversion valve sleeve above the conversion valve air source input port, and a conversion valve reverse air source output port and a conversion valve reverse air source exhaust port are provided on the conversion valve sleeve below the conversion valve air source input port.

[0010] As a further improvement of the present invention, an upper melt glue cylinder cavity and a lower melt glue cylinder cavity are provided inside the glue suction cylinder body, a piston rod one-way valve steel ball is provided inside the glue suction cylinder body at the upper melt glue cylinder cavity, a piston rod one-way valve steel ball locating pin is provided on the top of the piston rod one-way valve steel ball and extends into the interior of the pump body piston rod shaft, and a glue inlet one-way valve steel ball is provided inside the glue suction cylinder body at the lower melt glue cylinder cavity.

[0011] Beneficial effects of the present invention: (1) Constant pressure and stable output: The pressure storage cavity is used as a buffer system to absorb and balance pressure fluctuations when the piston pump switches, so that the hot melt adhesive can be output at a constant pressure, improving the stability and reliability of gluing, thereby achieving a better bonding effect.

[0012] (2) Extending the service life of equipment: By eliminating pressure fluctuations, the impact of repeated pressure changes on the internal parts of the pump body is reduced, and the risk of mechanical wear is reduced, the service life of the entire pump system can be extended and the replacement and maintenance costs can be reduced.

[0013] (3) Improve production efficiency: The hot melt adhesive liquid with constant pressure output avoids the pause and maintenance caused by unstable pressure, allowing the entire production line to run more efficiently and smoothly, thereby directly improving production efficiency and reducing workload.

[0014] (4) Improve product quality: Stable hot melt adhesive output can ensure reliable bonding effect, eliminate the problem of uneven adhesive application and product quality degradation caused by pressure fluctuations, and help customers produce high-quality products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a piston pump module for hot melt adhesive with constant pressure output according to the present invention;

[0016] Figure 2 The invention discloses a piston pump module for hot melt adhesive with constant pressure output. Figure 1 Schematic diagram from another perspective;

[0017] Figure 3 This is an internal analysis diagram of a glue circuit board seat of a piston pump module for hot melt adhesive with constant pressure output according to the present invention;

[0018] Figure 4 It is a schematic diagram of the main structure of a piston pump of a piston pump module for hot melt adhesive with constant pressure output according to the present invention;

[0019] Figure 5 It is a front view of a piston pump body of a piston pump module for hot melt adhesive with constant pressure output according to the present invention;

[0020] Figure 6 This is an internal analysis diagram of a conversion valve seat of a piston pump module for hot melt adhesive with constant pressure output according to the present invention;

[0021] Figure 7 The present invention discloses an internal analysis diagram of a glue suction cylinder of a piston pump module for hot melt adhesive with constant pressure output.

[0022] As shown in the figure: 1. Piston pump body; 2. Pump body air source inlet; 3. Air pump linkage pressure relief valve; 4. Pump body flow channel one-way check valve; 5. Glue circuit board seat; 6. Glue outlet; 7. Filter screen group; 8. Pump body glue outlet hose; 9. Pressure storage cavity; 10. Filter screen cavity; 11. Glue inlet;

[0023] 41. High-temperature cylinder; 42. Cylinder support; 43. Pump body sealing seat; 44. Glue suction cylinder; 45. Conversion valve seat; 46. Conversion valve lever slide slot seat; 47. Conversion valve lever; 48. Pump body piston rod shaft; 49. Power source-air source input port; 50. Cylinder body hot melt glue inlet; 51. Cylinder body hot melt glue outlet;

[0024] 20. Conversion valve sleeve; 21. Conversion valve core; 22. Conversion valve core connecting rod; 23. Conversion valve air source input port; 24. Conversion valve forward air source output port; 25. Conversion valve forward air source exhaust port; 26. Conversion valve reverse air source output port; 27. Conversion valve reverse air source exhaust port; 28. Upper magnet seat; 29. ​​Lever magnet seat; 30. Lower magnet seat;

[0025] 31. Steel ball of the one-way valve of the glue inlet; 32. Steel ball of the one-way valve of the piston rod; 33. Positioning pin of the steel ball of the one-way valve of the piston rod; 34. Inner cavity of the upper glue melting cylinder; 35. Inner cavity of the lower glue melting cylinder. DETAILED DESCRIPTION

[0026] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may change accordingly according to their different locations and different usage states; therefore, these or other directional terms should not be interpreted as restrictive terms.

[0027] The singular forms "a", "said" and "the" used in this specification are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and implementation methods. It should be understood that the implementation methods described herein are only used to explain this application and are not used to limit this application.

[0029] The present invention provides the following Figure 1-7 A constant pressure output hot melt adhesive piston pump module shown in the figure includes a glue circuit board seat 5, a piston pump body 1 is installed on the top of the glue circuit board seat 5, a pump body air source inlet 2 is provided on one side of the piston pump body 1, an air pump linkage pressure relief valve 3 is provided on one side of the glue circuit board seat 5, and the air pump linkage pressure relief valve 3 is connected to the pump body air source inlet 2 through a pipeline, a pump body flow channel one-way check valve 4 is provided on the outer side of the glue circuit board seat 5, a glue inlet 11 and multiple glue outlets 6 are provided on the glue circuit board seat 5, a pressure storage cavity 9 and a filter cavity 10 are provided inside the glue circuit board seat 5, the pressure storage cavity 9 and the filter cavity 10 are connected, a pump body glue outlet pipe 8 is provided between the piston pump body 1 and the pressure storage cavity 9, and a filter group 7 is provided on the side of the glue circuit board seat away from the air pump linkage pressure relief valve 3, and the filter group 7 is located inside the filter cavity 10.

[0030] like Figure 4 and Figure 5As shown, the piston pump body 1 in the present invention includes a high temperature resistant cylinder 41 and a glue suction cylinder body 44, a pump body sealing seat 43 is fixedly provided on the top of the glue suction cylinder body 44, the high temperature resistant cylinder 41 and the pump body sealing seat 43 are fixedly connected by a plurality of cylinder struts 42, a conversion valve seat 45 is provided on one side of the high temperature resistant cylinder 41, and a power source-air source input port 49 is provided on the conversion valve seat 45, the high temperature resistant cylinder 41 and the glue suction cylinder body 44 are connected by a pump body piston rod shaft 48, the high temperature resistant cylinder 41 and one side of the pump body sealing seat 43 are connected by a conversion valve lever slide groove seat 46, a conversion valve lever 47 connected to the pump body piston rod shaft 48 is slidably connected on the conversion valve lever slide groove seat 46, a cylinder body hot melt glue inlet 50 is provided at the bottom of the glue suction cylinder body 44, and a cylinder body hot melt glue outlet 51 is provided at the upper part of the glue suction cylinder body 44.

[0031] like Figure 6 As shown, in the present invention, a conversion valve core 21 and a conversion valve sleeve 20 sleeved on the outside of the conversion valve core 21 are provided inside the conversion valve seat 45, a conversion valve core connecting rod 22 is connected to the bottom end of the conversion valve core 21, a lever magnet seat 29 sleeved on the outside of the conversion valve core connecting rod 22 is provided inside the conversion valve seat 45, an upper magnet seat 28 installed inside the conversion valve seat 45 is provided on the upper part of the conversion valve core connecting rod 22, a lower magnet seat 30 installed inside the conversion valve seat 45 is provided on the lower part of the conversion valve core connecting rod 22, a conversion valve air source input port 23 is provided on the conversion valve sleeve 20, a conversion valve forward air source output port 24 and a conversion valve forward air source exhaust port 25 are provided on the conversion valve sleeve 20 above the conversion valve air source input port 23, and a conversion valve reverse air source output port 26 and a conversion valve reverse air source exhaust port 27 are provided on the conversion valve sleeve 20 below the conversion valve air source input port 23.

[0032] like Figure 7 As shown, in the present invention, an upper glue melting cylinder cavity 34 and a lower glue melting cylinder cavity 35 are provided inside the glue suction cylinder body 44, a piston rod one-way valve steel ball 32 is provided inside the glue suction cylinder body 44 at the upper glue melting cylinder cavity 34, a piston rod one-way valve steel ball locating pin 33 extending into the piston rod shaft 48 of the pump body is provided on the top of the piston rod one-way valve steel ball 32, and a glue inlet one-way valve steel ball 31 is provided inside the glue suction cylinder body 44 at the lower glue melting cylinder cavity 35.

[0033] When the present invention is implemented, the power gas source enters from the pump body gas source inlet 2, drives the piston pump body 1 to work, and at the same time closes the air pump linkage pressure relief valve 3 by connecting it, cutting off the glue liquid reflux channel. When the piston pump body 1 works, the glue liquid enters from the glue inlet 11, from the pump body glue outlet pipe 8, through the pump body flow channel one-way check valve 4, into the pressure storage cavity 9, and enters the filter cavity 10 after being pressurized by the pressure storage cavity 9, and flows out from the glue outlet 6 after being filtered by the filter group 7. When the power gas source is cut off from the pump body gas source inlet 2, the air pump linkage pressure relief valve 3 has no gas source pressurization, and the spring inside the air pump linkage pressure relief valve 3 pushes the valve to open, and the pressure of the entire glue circuit board seat 5 returns from the air pump linkage pressure relief valve 3 to the glue inlet 11, so that when the piston pump body 1 is closed, the entire module is in a safe state without pressure.

[0034] The working principle of the piston pump body 1: the air source is input from the power source-air source input port 49, enters the conversion valve air source input port 23, passes through the conversion valve positive air source output port 24 and enters the positive air chamber of the high temperature resistant cylinder 41, the cylinder moves upward to do work, driving the pump body piston rod shaft 48 to move upward, at this time the piston rod one-way valve steel ball 32 is closed, and at the same time the glue inlet one-way valve steel ball 31 is opened, the pump body piston rod shaft 48 moves upward, compressing the upper melt glue cylinder cavity 34 to discharge the glue liquid from the cylinder body hot melt glue outlet 51, and at the same time the glue liquid enters the lower melt glue cylinder cavity 35 from the cylinder body hot melt glue inlet 50, when the pump body piston rod shaft 48 keeps moving upward to drive the lever magnet seat 29 close to the upper magnet seat 28, the upper magnet seat 28 is pushed by the principle of magnets with the same poles repelling each other. The conversion valve core 21 is driven to move upward. After the conversion valve core 21 moves upward, the gas entering from the conversion valve air source input port 23 is switched to the conversion valve reverse air source output port 26 and enters the reverse air chamber of the high-temperature resistant cylinder 41. The cylinder moves downward to do work, driving the pump body piston rod shaft 48 to move downward. At this time, the one-way valve steel ball 31 of the glue inlet is closed, and the piston rod one-way valve steel ball 32 is opened. Since the pump body piston rod shaft 48 moves toward the glue suction cylinder cavity, the glue liquid is squeezed from the lower melt glue cylinder cavity 35 to the upper melt glue cylinder cavity 34, and then discharged from the cylinder hot melt glue outlet 51. The up and down movement of the pump body piston rod shaft 48 drives the switching of the conversion valve, causing the cylinder to circulate and drive the pump body piston rod shaft 48 to circulate and do work, thereby achieving the purpose of glue liquid circulation output.

[0035] The above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned implementation modes, a person skilled in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the implementation modes of the present invention.

Claims

1. A piston pump module for hot melt adhesive with constant pressure output, comprising an adhesive circuit board seat (5), characterized in that: A piston pump body (1) is installed on the top of the rubber circuit board seat (5), a pump body air source inlet (2) is provided on one side of the piston pump body (1), an air pump linkage pressure relief valve (3) is provided on one side of the rubber circuit board seat (5), and the air pump linkage pressure relief valve (3) is connected to the pump body air source inlet (2) through a pipeline, a pump body flow channel one-way check valve (4) is provided on the outer side of the rubber circuit board seat (5), and a rubber inlet (11) and a plurality of rubber outlets (6) are provided on the rubber circuit board seat (5).

2. A piston pump module for hot melt adhesive with constant pressure output according to claim 1, characterized in that: A pressure storage cavity (9) and a filter cavity (10) are provided in the rubber circuit plate seat (5); the pressure storage cavity (9) and the filter cavity (10) are connected; and a pump body rubber outlet pipe (8) is provided between the piston pump body (1) and the pressure storage cavity (9).

3. A piston pump module for hot melt adhesive with constant pressure output according to claim 2, characterized in that: A filter screen group (7) is provided on the side of the rubber circuit board seat away from the air pump linked pressure relief valve (3), and the filter screen group (7) is located inside the filter screen cavity (10).

4. A piston pump module for hot melt adhesive with constant pressure output according to claim 1, characterized in that: The piston pump body (1) comprises a high temperature resistant cylinder (41) and a glue suction cylinder body (44); a pump body sealing seat (43) is fixedly sleeved on the top of the glue suction cylinder body (44); the high temperature resistant cylinder (41) and the pump body sealing seat (43) are fixedly connected via a plurality of cylinder struts (42); a conversion valve seat (45) is provided on one side of the high temperature resistant cylinder (41) and a power source-gas source input port (49) is provided on the conversion valve seat (45); The cylinder bodies (44) are connected via a pump body piston rod shaft (48); the high temperature resistant cylinder (41) is connected to one side of a pump body sealing seat (43) via a conversion valve lever slide groove seat (46); a conversion valve lever (47) connected to the pump body piston rod shaft (48) is slidably connected to the conversion valve lever slide groove seat (46); a cylinder body hot melt glue inlet (50) is provided at the bottom end of the glue suction cylinder body (44); and a cylinder body hot melt glue outlet (51) is provided at the top of the glue suction cylinder body (44).

5. A piston pump module for hot melt adhesive with constant pressure output according to claim 4, characterized in that: The conversion valve seat (45) is provided with a conversion valve core (21) and a conversion valve sleeve (20) sleeved on the outside of the conversion valve core (21); the bottom end of the conversion valve core (21) is connected to a conversion valve core connecting rod (22); the conversion valve seat (45) is provided with a lever magnet seat (29) sleeved on the outside of the conversion valve core connecting rod (22); the upper part of the conversion valve core connecting rod (22) is provided with an upper magnet seat (28) installed in the conversion valve seat (45); the lower part of the conversion valve core connecting rod (22) is provided with a lever magnet seat (29) sleeved on the outside of the conversion valve core connecting rod (22); The conversion valve body (45) is provided with a lower magnet seat (30) installed inside the conversion valve seat (45); the conversion valve sleeve (20) is provided with a conversion valve air source input port (23); the conversion valve sleeve (20) is provided with a conversion valve forward air source output port (24) and a conversion valve forward air source exhaust port (25) located above the conversion valve air source input port (23); the conversion valve sleeve (20) is provided with a conversion valve reverse air source output port (26) and a conversion valve reverse air source exhaust port (27) located below the conversion valve air source input port (23).

6. A self-propelled hot melt adhesive piston pump according to claim 4, characterized in that: The glue suction cylinder body (44) is provided with an upper glue melting cylinder cavity (34) and a lower glue melting cylinder cavity (35). A piston rod check valve steel ball (32) is provided at the upper glue melting cylinder cavity (34) inside the glue suction cylinder body (44). A piston rod check valve steel ball positioning pin (33) extending into the interior of the pump body piston rod shaft (48) is provided at the top of the piston rod check valve steel ball (32). A glue inlet check valve steel ball (31) is provided at the lower glue melting cylinder cavity (35) inside the glue suction cylinder body (44).

Images