CN102814259B - Sensor housing silicone grease injection apparatus - Google Patents

Abstract

The invention discloses a silicon grease injection device for a sensor housing. It includes the electric control box (1) and the integrated block (2) on the electric control box. The silicone grease barrel (3), the injection head (4) and the cylinder (5) are installed on the integrated block. There are connections in the integrated block. The silicone grease channel of the silicone grease barrel and the injection head is provided with a switch device on the silicone grease channel. The device of the present invention completely replaces the current manual operation. Push the extrusion cover at the end of the silicone grease barrel through the air pressure pump in the electric control box to squeeze the silicone grease in the silicone grease barrel into the silicone grease diversion hole in the integrated block, and drive the tapered hole in the plunger integrated block through the piston of the cylinder , so that the silicone grease in the silicone grease bucket is injected into the housing of the sensor through the tapered hole and the injection head. Can be adapted to various types of sensor housings. The invention has the advantages of compact structure, reasonable layout, convenient operation, reliable operation, accurate and adjustable injection volume, economical and practical, especially suitable for small and medium-sized enterprises. With the development of the automobile industry, the application prospect is broad.

Description

Silicone grease injection device for sensor housing

technical field

The invention relates to a silicon grease injection device for a sensor shell, belonging to the technical field of sensor production equipment.

Background technique

In the production of the sensor, it is necessary to inject a certain amount of silicone grease into the sensor shell, and then put the thermistor into the shell. Silicon grease has good thermal conductivity and insulation, and can fix and protect the sensor element. . The current injection method is the use of syringes and manual injection operations, resulting in unstable product quality, large errors, and low production efficiency. The most important thing is that the amount of silicone grease injected is not easy to control due to different requirements for different shells. There is no injection device with similar model specifications.

Contents of the invention

The object of the present invention is to provide a silicon grease injecting device for sensor casings that can replace the existing manual operation, improve production efficiency, and ensure product quality, so as to overcome the shortcomings of the prior art.

The technical scheme of the present invention is constituted like this: a kind of silicone grease injection device of the sensor shell of the present invention, comprises electric control box and the integrated block that is arranged on the electric control box, and integrated block is equipped with silicone grease barrel, injection head and In the cylinder, the integrated block is provided with a silicone grease channel connecting the silicone grease barrel and the injection head, and a switch device is provided on the silicone grease channel.

In the silicone grease injection device of the aforementioned sensor housing, the surface of the integrated block is provided with a silicone grease barrel installation hole, an integrated block installation hole, an injection head connecting pipe threaded port, a cylinder installation hole, and a cylinder piston hole; the integrated block is provided with a plunger The hole, the plunger hole and the cylinder piston hole are coaxial, and the connection between the plunger hole and the cylinder piston hole is provided with a tapered hole, and the side of the plunger hole is connected with the silicone grease barrel installation hole through the silicone grease diversion hole.

In the silicone grease injection device of the aforementioned sensor housing, the switch device includes a plunger hole and a plunger installed in the plunger hole; the outer diameter of the plunger is smaller than the diameter of the plunger hole, and the top end of the plunger hole is provided with a tapered The surface and the guide post, the guide post penetrates the tapered hole, and the tapered surface cooperates with the tapered hole.

In the silicone grease injection device of the aforementioned sensor housing, the threaded port of the injection head connecting pipe is threadedly connected with the injection head connecting pipe, both ends of the injection head connecting pipe are provided with threads, and the thread at the other end of the injection head connecting pipe is threadedly connected with the injection head .

In the silicone grease injection device for the aforementioned sensor housing, the piston on the cylinder is inserted into the cylinder piston hole on the integrated block; the mounting seat on the cylinder is fixedly connected to the integrated block mounting hole on the surface of the integrated block through bolts.

In the silicone grease injection device for the aforementioned sensor housing, the tail of the silicone grease barrel is provided with an end cover and an extrusion cover.

In the silicone grease injection device for the aforementioned sensor housing, the electric control box is provided with a control circuit and an air pump, and the air pump is connected to the air interface of the cylinder and the cavity between the end cap and the extrusion cover in the silicone grease barrel.

Due to the above-mentioned technical scheme, the device of the present invention completely replaces the current manual operation. The invention pushes the extrusion cover at the tail of the silicone grease barrel through the air pressure pump in the electric control box to squeeze the silicone grease in the silicone grease barrel into the silicone grease guide hole in the integrated block, and drives the cone in the plunger integrated block through the piston of the cylinder. Shaped hole, so that the silicone grease in the silicone grease barrel is injected into the housing of the sensor through the tapered hole and the injection head. The control circuit realizes equal intermittent injection through rectangular pulses. The total injection volume is controlled by the moving stroke of the extrusion cover in the silicone grease barrel, which can adapt to various types of sensor housings. Therefore, compared with the prior art, the present invention not only has the advantages of being able to completely replace the existing manual operation, improving production efficiency, and ensuring product quality, but also has the advantages of compact structure, reasonable layout, convenient operation, reliable operation, The injection volume is accurate and adjustable, and it is economical and practical. The invention is especially suitable for use by small and medium-sized enterprises. With the development of the automobile industry, its application prospect is relatively broad.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Figure 2 is a partially enlarged view of Figure 1;

Fig. 3 is the principle structural representation of integrated block of the present invention;

Fig. 4 is a schematic diagram of the appearance of the present invention.

The marks in the drawings are: 1-electric control box, 2-manifold block, 3-silicon grease barrel, 4-injection head, 5-cylinder, 6-silicon grease barrel installation hole, 7-manifold block installation hole, 8- Injection head connecting pipe threaded port, 9-cylinder mounting hole, 10-cylinder piston hole, 11-plunger hole, 12-tapered hole, 13-silicon grease diversion hole, 14-plunger, 15-tapered surface, 16-guide post, 17-injection head connecting tube, 18-installation seat, 19-piston, 20-end cap, 21-extrusion cap.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. But it is not used as any limitation basis for the present invention.

Embodiment: A device for injecting silicone grease into a sensor housing, as shown in Figure 1, includes an electric control box 1 and an integrated block 2 arranged on the electric control box, on which a silicone grease barrel 3, an injection head 4 and Cylinder 5, the integrated block is provided with a silicone grease channel connecting the silicone grease barrel and the injection head, and a switch device is provided on the silicone grease channel.

The integrated block 2 is shown in Figure 3. The surface of the integrated block 2 is provided with a silicone grease barrel installation hole 6, an integrated block installation hole 7, an injection head connecting pipe threaded port 8, a cylinder installation hole 9 and a cylinder piston hole 10; The block 2 is provided with a plunger hole 11, the plunger hole 11 is coaxial with the cylinder piston hole 10, and the junction of the plunger hole 11 and the cylinder piston hole 10 is provided with a tapered hole 12, and the side of the plunger hole 11 is covered with silicone grease. The guide hole 13 is connected with the installation hole 6 of the silicone grease barrel.

Described switching device is shown in Figure 3, and switching device comprises plunger hole 11 and the plunger 14 that is installed in plunger hole 11; A tapered surface 15 and a guide post 16 are provided. The guide post 16 penetrates into the tapered hole 12 , and the tapered surface 15 cooperates with the tapered hole 12 . The threaded port 8 of the injection head connection pipe is threadedly connected with the injection head connection pipe 17, and both ends of the injection head connection pipe 17 are provided with threads, and the thread at the other end of the injection head connection pipe 17 is threadedly connected with the injection head 4. The piston 19 on the cylinder 5 is inserted into the cylinder piston hole 10 on the manifold 2; the mounting seat 18 on the cylinder 5 is fixedly connected to the manifold mounting hole 7 on the surface of the manifold 2 via bolts. The tail of the silicone grease barrel 3 is provided with an end cap 20 and an extrusion cap 21 . The electric control box 1 is provided with a control circuit and a pneumatic pump, and the pneumatic pump is connected with the air interface of the cylinder 5 and the cavity between the end cover 20 and the squeeze cover 21 in the silicone grease barrel 3 .

Fig. 3 is a schematic structural diagram of the integrated block. The silicone grease diversion hole 13 in Fig. 3 is a 90-degree corner hole. Since the corner hole cannot be processed in the integrated block, two 90-degree intersecting straight holes can be drilled during specific processing. holes, and then plug the holes that do not need to be connected with plugs.

Fig. 3 is the schematic structural diagram of the integrated block, in order to be able to put the plunger 14 into the plunger hole 11 of Fig. After being loaded into the plunger hole 11, the cover is connected with the integrated block by bolts.

Working process and principle of the present invention

As shown in Figures 1, 2 and 3, the present invention pushes the extrusion cover at the tail of the silicone grease barrel through the air pressure pump in the electric control box to squeeze the silicone grease in the silicone grease barrel into the silicone grease diversion hole in the integrated block, and pass through the cylinder The piston drives the tapered hole in the plunger integrated block, so that the silicone grease in the silicone grease barrel is injected into the housing of the sensor through the tapered hole and the injection head. The control circuit realizes equal intermittent injection through rectangular pulses. The total injection volume is controlled by the moving stroke of the extrusion cover in the silicone grease barrel, which can adapt to various types of sensor housings. When the silicone grease is injected, the sensor housing is placed horizontally to ensure that the bottom of the housing is filled with silicone grease without residual gas, and the injection is achieved by pushing the piston of the rubber barrel to move and extruding the silicone grease by compressed air.

The invention relies on the time accuracy of 0.01s-0.03s (the time interval of each injection is 0.01s-0.03s) to control the injection amount. The equipment is low in cost, simple in operation, and easy to meet the injection requirements of product diversity. When the present invention is assembled, it ensures the tightness of all joints on the silicone grease flow path, and uses the piston of the cylinder to drive the plunger. When the plunger moves downward, the tapered hole is opened, and the pressure of the cylinder on the silicone grease is used to push the column upward. The plug closes the tapered hole and is injected through the tapered hole and injection tip into the housing of the sensor. Relying on the accuracy of the injection time to control the piston movement stroke of the silicone grease barrel to achieve quantitative injection, which ensures the quantitative injection of silicone grease. The control method is precision control with an interval of 0.01s-0.03s, relying on the time to control the relay and cylinder, the accuracy of the time is adjustable, and it can adapt to the injection of different amounts of silicone grease for different types of shells. On the premise of ensuring the sealing of all joints on the silicone grease flow path, the accuracy of the injection volume can be guaranteed. The injection head of the present invention can be replaced according to different types of sensor housings.

The invention has the advantages of compact structure, reasonable layout, convenient operation, reliable operation, accurate and adjustable injection volume, economical and practical, especially suitable for small and medium-sized enterprises. With the development of the automobile industry, the application prospect is broad.

Claims (3)

1. a silicone grease injection device for sensor housing, it is characterized in that: comprise electric cabinet (1) and be located at the integrated package (2) on electric cabinet, integrated package is provided with silicone grease bucket (3), injection head (4) and cylinder (5), the afterbody of described silicone grease bucket (3) is provided with end cap (20) and extruding lid (21), be provided with the silicone grease passage connecting silicone grease bucket and injection head in integrated package, silicone grease passage is provided with switching device; Described electric cabinet is provided with control circuit and pulsometer in (1), the end cap (20) in the air interface of pulsometer and cylinder (5) and silicone grease bucket (3) and extrude the cavity covered between (21) and be connected; Described integrated package (2) surface is provided with silicone grease bucket installing hole (6), integrated package installing hole (7), injection head tube connector screw thread mouth (8), cylinder mounting holes (9) and cylinder piston hole (10); Plunger hole (11) is provided with in integrated package (2), plunger hole (11) is coaxial with cylinder piston hole (10), plunger hole (11) is provided with bellmouth (12) with the junction in cylinder piston hole (10), and the side of plunger hole (11) is connected with silicone grease bucket installing hole (6) through silicone grease pod apertures (13); Described switching device comprises plunger hole (11) and is arranged on the plunger (14) in plunger hole (11); The external diameter of plunger (14) is less than the aperture of plunger hole (11), and plunger (14) top ends is provided with taper surface (15) and guide pillar (16), and guide pillar (16) penetrates bellmouth (12), and taper surface (15) coordinates with bellmouth (12).

2. silicone grease injection device for sensor housing according to claim 1, it is characterized in that: described injection head tube connector screw thread mouth (8) is threaded with injection head tube connector (17), injection head tube connector (17) two ends are equipped with screw thread, and the screw thread of injection head tube connector (17) other end is threaded with injection head (4).

3. silicone grease injection device for sensor housing according to claim 1, is characterized in that: the piston (19) on described cylinder (5) is inserted in the cylinder piston hole (10) on integrated package (2); Mount pad (18) on cylinder (5) is fixedly connected with through the cylinder mounting holes (9) of bolt with integrated package (2) surface.