Single-component gear dispensing metering head

Abstract

The single-component gear dispensing metering head comprises a pump shell, an adjusting assembly, a gear shaft, a working gear, a glue inlet pipe and a glue outlet pipe, the adjusting assembly is fixedly arranged on the pump shell, four adjusting grooves are symmetrically formed in the two sides of the pump shell, and sealing plates are arranged in the adjusting grooves in a sealed and sliding mode; the gear shaft is rotationally arranged on the sealing plate through a bearing, a working gear is arranged on the gear shaft, a glue inlet pipe and a glue outlet pipe are fixedly arranged at the top and the bottom of the pump shell respectively, the adjusting assembly comprises an adjusting seat, an adjusting mechanism and a driving mechanism, the adjusting seat is fixedly arranged on the pump shell, and the driving mechanism is arranged on the adjusting seat. And an adjusting mechanism for adjusting a gap between the two working gears and a driving mechanism for driving the working gears to rotate are fixedly arranged on the adjusting seat.

Description

Technical Field

[0001] The invention relates to the technical field of valve equipment, in particular to a single-component gear dispensing metering head. Background Art

[0002] With the rapid development of electronic manufacturing, industrial electrical, solar photovoltaic and construction engineering, dispensing machines are becoming more and more widely used as important equipment in automated production. Among them, the gear pump dispensing head is a volumetric dispensing head specially designed to handle materials that require continuous potting from low viscosity to high viscosity. Specific applications include continuous coating of sealants on component housings, or coating of adhesives in connection processes. It usually consists of a housing, discharge and feed channels, and two gears, one of which is connected to the pump driver. The driving gear drives the driven gear through meshing. The potting material is sucked into the feed port under the action of the rotating gear, then transported to the outside of the gear in the pump, and finally discharged from the discharge port. The weight of the supplied material is mainly determined by the gear teeth, gear shape, number of teeth and set speed.

[0003] However, the gear gap of the gear pump glue injection head is fixed during actual use, which makes it impossible for the gear pump to maintain high precision when the viscosity and flow rate of the glue change, and thus it is impossible to achieve the best metering effect.

[0004] Therefore, it is necessary to provide a single-component gear dispensing metering head to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a single-component gear dispensing metering head, comprising a pump housing, an adjustment component, a gear shaft, a working gear, a glue inlet pipe and a glue outlet pipe, wherein the pump housing is fixedly provided with an adjustment component, four adjustment grooves are symmetrically provided on both sides of the pump housing, a sealing plate is sealingly and slidingly provided in the adjustment groove, the gear shaft is rotatably provided on the sealing plate through a bearing, a working gear is provided on the gear shaft, and a glue inlet pipe and a glue outlet pipe are fixedly provided on the top and bottom of the pump housing respectively;

[0006] The adjustment assembly includes an adjustment seat, an adjustment mechanism and a driving mechanism, wherein the adjustment seat is fixedly arranged on the pump housing, and an adjustment mechanism for adjusting the gap between the two working gears and a driving mechanism for driving the working gears to rotate are fixedly arranged on the adjustment seat.

[0007] Further, as a preference, the adjustment mechanism includes an adjustment guide rail, an adjustment ring, an adjustment block and a coaxial reverse screw, wherein the adjustment guide rail is fixedly arranged on the adjustment seat, an adjustment ring is fixedly arranged on the adjustment guide rail, a coaxial reverse screw is rotatably arranged on the upper limit position of the adjustment ring, adjustment blocks are symmetrically slidably arranged at both ends of the adjustment guide rail, the adjustment blocks are rotatably connected to the gear shaft, and threaded grooves matching the thread patterns at both ends of the coaxial reverse screw are respectively opened on the two adjustment blocks.

[0008] Further, as a preference, the driving mechanism includes a driving seat, a driving shaft, a driving gear and a driving motor, wherein the driving seat is fixedly disposed on the adjusting seat, a driving shaft is rotatably disposed on the driving seat, a driving gear is disposed on the driving shaft, and the driving shaft is transmission-connected to the driving motor via a reduction gear box.

[0009] Further, as a preference, an arc guide plate is fixedly arranged on the driving seat, an arc guide groove is opened on the arc guide plate, an arc guide rod is slidably arranged in the arc guide groove, a transmission gear is rotatably arranged on the arc guide rod, the transmission gear is meshed with the driving gear, and a spring is arranged on the outer side of the arc guide rod.

[0010] Further, as a preference, a support plate is fixedly arranged on the arc-shaped guide plate, a slide groove is provided on the support plate, a moving block is slidably arranged in the slide groove, a driven gear is rotatably arranged on the moving block, a second spring is arranged between the moving block and the slide groove, and the driven gear is meshed with the transmission gear;

[0011] A driven shaft is fixedly arranged on the driven gear, and the driven shaft is connected to the gear shaft via a bayonet pin.

[0012] Further, as a preference, hydraulic cavities are opened on both sides of the adjustment ring, the hydraulic cavities are connected to an external hydraulic cavity driving mechanism, a hydraulic ring is sealingly and slidably arranged in the hydraulic cavity, a bevel gear 1 is rotatably arranged at one end of the hydraulic ring away from the hydraulic cavity, and the bevel gear 1 is slidably connected to the coaxial reverse screw through a bayonet pin;

[0013] A second bevel gear is fixedly disposed at the output end of the driving shaft, and the second bevel gear can mesh with the first bevel gear.

[0014] Furthermore, preferably, the pump housing is provided with a flow sensor for monitoring the flow of glue and a pressure sensor for monitoring the internal pressure of the pump housing, and the pump housing is provided with a controller, and the controller is electrically connected to the flow sensor, pressure sensor, drive motor and hydraulic drive mechanism.

[0015] Compared with the prior art, the present invention provides a single-component gear dispensing metering head, which has the following beneficial effects:

[0016] In the present invention, an adjustment component is provided. Through the adjustment mechanism and the driving mechanism in the adjustment component, the gap between the two working gears can be properly fine-tuned according to the viscosity and flow rate of the glue during the measurement of the glue, thereby ensuring that a high-precision metering effect is maintained under different working conditions. The driving gear is connected to the driven gear through the transmission gear, so that no matter how the gap of the working gear is adjusted, the driving motor can drive the working gear to rotate smoothly and effectively, and through the meshing transmission of bevel gear one and bevel gear two, drive the coaxial counter-thread screw to rotate, and then drive the adjustment block to drive the gear shaft to slide along the adjustment guide rail, thereby realizing fine-tuning of the gap between the two working gears, and further enabling the metering head to achieve the best metering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the pump casing in the present invention;

[0019] Figure 3 It is a structural schematic diagram of the adjustment mechanism in the present invention;

[0020] Figure 4 for Figure 1 A magnified schematic diagram of part A;

[0021] Figure 5 for Figure 4 An enlarged schematic diagram of part B;

[0022] In the figure: 1. pump housing; 11. adjusting groove; 12. sealing plate; 2. adjusting assembly; 21. adjusting seat; 22. adjusting mechanism; 221. adjusting guide rail; 222. adjusting ring; 223. adjusting block; 224. coaxial reverse screw; 225. hydraulic ring; 226. bevel gear one; 23. driving seat; 231. arc guide plate; 232. arc guide groove; 233. arc guide rod; 234. transmission gear; 235. support plate; 236. slide groove; 237. moving block; 238. driven gear; 239. driven shaft; 24. driving shaft; 241. bevel gear two; 25. driving gear; 26. driving motor; 3. gear shaft; 4. working gear; 5. rubber inlet hose; 6. rubber outlet hose. DETAILED DESCRIPTION

[0023] Example: See Figure 1 to Figure 5In the embodiment of the present invention, a single-component gear dispensing metering head comprises a pump housing 1, an adjusting component 2, a gear shaft 3, a working gear 4, a glue inlet pipe 5 and a glue outlet pipe 6, wherein the pump housing 1 is fixedly provided with an adjusting component 2, four adjusting grooves 11 are symmetrically provided on both sides of the pump housing 1, a sealing plate 12 is sealingly and slidingly provided in the adjusting groove 11, the gear shaft 3 is rotatably provided on the sealing plate 12 through a bearing, a working gear 4 is provided on the gear shaft 3, and a glue inlet pipe 5 and a glue outlet pipe 6 are fixedly provided on the top and bottom of the pump housing 1 respectively;

[0024] The adjustment assembly 2 includes an adjustment seat 21, an adjustment mechanism 22 and a driving mechanism, wherein the adjustment seat 21 is fixedly arranged on the pump housing 1, and the adjustment mechanism 22 for adjusting the gap between the two working gears 4 and the driving mechanism for driving the working gear 4 to rotate are fixedly arranged on the adjustment seat 21;

[0025] The adjustment mechanism 22 includes an adjustment guide rail 221, an adjustment ring 222, an adjustment block 223 and a coaxial counter-screw 224, wherein the adjustment guide rail 221 is fixedly arranged on the adjustment seat 21, an adjustment ring 222 is fixedly arranged on the adjustment guide rail 221, a coaxial counter-screw 224 is rotatably arranged on the upper limit position of the adjustment ring 222, adjustment blocks 223 are symmetrically slidably arranged at both ends of the adjustment guide rail 221, the adjustment blocks 223 are rotatably connected to the gear shaft 3, and thread grooves matching the thread patterns at both ends of the coaxial counter-screw 224 are respectively opened on the two adjustment blocks 223.

[0026] During implementation, the glue inlet pipe 5 is connected to the glue injection equipment, and then the drive motor 26 is started to drive the shaft 24 to rotate, and the drive gear 25, the transmission gear 234, the driven gear 238 and the driven shaft 239 are used to drive the gear shaft 3 to rotate, thereby driving the working gear 3 to rotate to perform the glue dispensing work, and during the glue dispensing process, according to the viscosity and flow of the glue, the adjustment mechanism 22 is used to adjust the gap between the two working gears 25, that is, the external hydraulic transmission mechanism is used to selectively drive a hydraulic ring 225 on both sides of the adjustment ring 222 to slide, so that one of the two bevel gears 1 226 is meshed with the bevel gear 2 241 , thereby driving the coaxial counter-thread screw 224 to rotate, so that the adjusting block 223 slides along the adjusting guide rail 221 under the action of the coaxial counter-thread screw 224, and then fine-tunes the gap between the two working gears 4. After the adjustment is completed, the bevel gear 1 226 is separated from the meshing range of the bevel gear 241. At this time, the adjusting block 223 can maintain the importance of the coaxial counter-thread screw 224 stable, thereby ensuring that the two working gears 4 remain stable after the gap is adjusted, thereby improving the metering accuracy of the working gear 4, and during the sliding process of the gear shaft 3, it can drive the sealing plate 12 to slide along the adjusting groove 11 in a sealed manner, thereby ensuring the sealing of the pump housing 1 and effectively preventing glue leakage.

[0027] In this embodiment, Figure 4 The driving mechanism includes a driving seat 23, a driving shaft 24, a driving gear 25 and a driving motor 26, wherein the driving seat 23 is fixedly arranged on the adjusting seat 21, a driving shaft 24 is rotatably arranged on the driving seat 23, a driving gear 25 is arranged on the driving shaft 24, and the driving shaft 24 is transmission-connected to the driving motor 26 through a reduction box.

[0028] In this embodiment, Figure 4 An arc guide plate 231 is fixedly arranged on the driving seat 23, an arc guide groove 232 is opened on the arc guide plate 231, an arc guide rod 233 is slidably arranged in the arc guide groove 232, a transmission gear 234 is rotatably arranged on the arc guide rod 233, the transmission gear 234 is meshed with the driving gear 25, and a spring 1 is arranged on the outer side of the arc guide rod 233.

[0029] As a preferred embodiment, the transmission gear 234 can always mesh with the driving gear 25 under the action of spring 1, that is, the transmission gear 234 can mesh with the driving gear 25 when it is at any position of the arc guide groove 232.

[0030] In this embodiment, Figure 4A support plate 235 is fixedly provided on the arc guide plate 231, a slide groove 236 is provided on the support plate 235, a moving block 237 is slidably provided in the slide groove 236, a driven gear 238 is rotatably provided on the moving block 237, a spring 2 is provided between the moving block 237 and the slide groove 236, and the driven gear 238 is meshed with the transmission gear 234;

[0031] A driven shaft 239 is fixedly disposed on the driven gear 238 , and the driven shaft 239 is connected to the gear shaft 3 via a bayonet pin.

[0032] As a preferred embodiment, the transmission gear 234 rotates under the action of the driving gear 25, and the driven gear 238 is always engaged with the transmission gear 234 under the action of spring 2, so that the transmission gear 234 can be engaged with the driving gear 25 and the driven gear 238 at the same time, so that the driving gear 25 can drive the driven gear 238 to rotate, and further drive the gear shaft 3 to rotate, that is, drive the working gear 4 to rotate, and after the gap of the working gear 4 is fine-tuned, that is, when the positions of the gear shaft 3 and the driven shaft 239 change, the driving gear 25 can always drive the driven gear 238 to rotate, that is, ensure that the working gear 4 can rotate stably, thereby ensuring the accuracy of the measurement of the working gear 4.

[0033] In this embodiment, Figure 3 and Figure 5 , hydraulic cavities are opened on both sides of the adjusting ring 222, and the hydraulic cavities are connected to the external hydraulic cavity driving mechanism. A hydraulic ring 225 is provided in the hydraulic cavity for sealing and sliding. A bevel gear 226 is rotatably provided at one end of the hydraulic ring 225 away from the hydraulic cavity, and the bevel gear 226 is slidably connected to the coaxial reverse screw 224 through a bayonet pin;

[0034] A second bevel gear 241 is fixedly disposed at the output end of the driving shaft 24 , and the second bevel gear 241 can mesh with the first bevel gear 226 .

[0035] During implementation, one of the hydraulic rings 225 on both sides of the adjustment ring 222 is driven to slide by an external hydraulic drive mechanism, so that the bevel gear 1 226 on this hydraulic ring 225 is engaged with the bevel gear 2 241, so that the coaxial counter-screw 224 rotates, and then the adjustment block 223 slides along the adjustment guide rail 221, that is, the gap between the two working gears 4 changes, and the two bevel gears 1 226 can drive the coaxial counter-screw 224 to rotate in opposite directions, thereby adjusting the two working gears 4 to move closer or apart, that is, fine-tuning is performed according to the flow rate and viscosity of the glue, thereby maintaining high metering accuracy and achieving the best metering effect.

[0036] In this embodiment, the pump housing 1 is provided with a flow sensor for monitoring the flow of glue and a pressure sensor for monitoring the internal pressure of the pump housing 1. The pump housing 1 is provided with a controller, and the controller is electrically connected to the flow sensor, pressure sensor, drive motor 26 and hydraulic drive mechanism.

[0037] To sum up, when the present invention is implemented, the glue inlet pipe 5 is connected to the glue injection equipment, and then the driving motor 26 is started to drive the working gear 3 to rotate to perform the glue dispensing work. During the glue dispensing process, the gap between the two working gears 25 is fine-tuned by the adjusting mechanism 22 according to the viscosity and flow of the glue, thereby improving the metering accuracy of the working gear 4. Through the design of the driving gear 25, the transmission gear 234, the driven gear 238 and the driven shaft 239, no matter how the gap between the two working gears 4 is adjusted, the driving motor 26 can effectively drive the working gear 4 to rotate, and in the process of the gear shaft 3 sliding with the working gear 4, it can drive the sealing plate 12 to slide along the adjusting groove 11 in a sealed manner, thereby ensuring the sealing of the pump housing 1, effectively preventing glue leakage and further improving the metering accuracy.

[0038] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Single-component gear dispensing metering head, characterized by: The invention comprises a pump housing (1), an adjustment component (2), a gear shaft (3), a working gear (4), a rubber inlet pipe (5) and a rubber outlet pipe (6), wherein the adjustment component (2) is fixedly arranged on the pump housing (1), four adjustment grooves (11) are symmetrically provided on both sides of the pump housing (1), a sealing plate (12) is sealingly and slidably provided in the adjustment groove (11), the gear shaft (3) is rotatably arranged on the sealing plate (12) via a bearing, the working gear (4) is arranged on the gear shaft (3), and the rubber inlet pipe (5) and the rubber outlet pipe (6) are fixedly arranged on the top and bottom of the pump housing (1) respectively; The adjustment assembly (2) comprises an adjustment seat (21), an adjustment mechanism (22) and a driving mechanism, wherein the adjustment seat (21) is fixedly arranged on the pump housing (1), and the adjustment seat (21) is fixedly provided with an adjustment mechanism (22) for adjusting the clearance between the two working gears (4) and a driving mechanism for driving the working gears (4) to rotate.

2. The single-component gear dispensing metering head according to claim 1 is characterized in that: The adjustment mechanism (22) comprises an adjustment rail (221), an adjustment ring (222), an adjustment block (223) and a coaxial reverse screw (224), wherein the adjustment rail (221) is fixedly arranged on the adjustment seat (21), an adjustment ring (222) is fixedly arranged on the adjustment rail (221), a coaxial reverse screw (224) is rotatably arranged on the upper limit position of the adjustment ring (222), adjustment blocks (223) are symmetrically slidably arranged at both ends of the adjustment rail (221), the adjustment blocks (223) are rotatably connected to the gear shaft (3), and thread grooves matching the thread patterns at both ends of the coaxial reverse screw (224) are respectively opened on the two adjustment blocks (223).

3. The single-component gear dispensing metering head according to claim 2 is characterized in that: The driving mechanism comprises a driving seat (23), a driving shaft (24), a driving gear (25) and a driving motor (26), wherein the driving seat (23) is fixedly arranged on the adjusting seat (21), a driving shaft (24) is rotatably arranged on the driving seat (23), a driving gear (25) is arranged on the driving shaft (24), and the driving shaft (24) is transmission-connected to the driving motor (26) via a reduction gear box.

4. The single-component gear dispensing metering head according to claim 3 is characterized in that: An arc-shaped guide plate (231) is fixedly arranged on the driving seat (23), an arc-shaped guide groove (232) is provided on the arc-shaped guide plate (231), an arc-shaped guide rod (233) is slidably arranged in the arc-shaped guide groove (232), a transmission gear (234) is rotatably arranged on the arc-shaped guide rod (233), the transmission gear (234) is meshed with the driving gear (25), and a spring 1 is arranged on the outer side of the arc-shaped guide rod (233).

5. The single-component gear dispensing metering head according to claim 4 is characterized in that: A support plate (235) is fixedly arranged on the arc-shaped guide plate (231), a slide groove (236) is provided on the support plate (235), a moving block (237) is slidably arranged in the slide groove (236), a driven gear (238) is rotatably arranged on the moving block (237), a second spring is arranged between the moving block (237) and the slide groove (236), and the driven gear (238) is meshed with the transmission gear (234); A driven shaft (239) is fixedly arranged on the driven gear (238), and the driven shaft (239) is connected to the gear shaft (3) via a bayonet pin.

6. The single-component gear dispensing metering head according to claim 3 is characterized in that: The adjusting ring (222) has hydraulic chambers on both sides, the hydraulic chambers are connected to an external hydraulic chamber driving mechanism, a hydraulic ring (225) is provided in the hydraulic chamber for sealing and sliding, a bevel gear (226) is rotatably provided at one end of the hydraulic ring (225) away from the hydraulic chamber, and the bevel gear (226) is slidably connected to the coaxial reverse screw (224) via a bayonet pin; A second bevel gear (241) is fixedly provided at the output end of the driving shaft (24), and the second bevel gear (241) can mesh with the first bevel gear (226).

7. The single-component gear dispensing metering head according to claim 6, characterized in that: The pump housing (1) is provided with a flow sensor for monitoring the flow of glue and a pressure sensor for monitoring the internal pressure of the pump housing (1). The pump housing (1) is provided with a controller, and the controller is electrically connected to the flow sensor, the pressure sensor, the drive motor (26) and the hydraulic drive mechanism.

Images