CN102909824B - filter screen assembly production device - Google Patents

Abstract

The invention discloses a filter screen assembly production device which comprises a first die and a second die, wherein the first die is provided with a first parting surface and a first net cutting edge, the first net cutting edge is of a closed annular structure, the second die is provided with a second parting surface and a second net cutting edge, and the second net cutting edge is of a closed annular structure; the first die is provided with a mesh material conveying device used for pulling the mesh material into the framework body cavity, the mesh material conveying device comprises one or more pairs of driving rollers, one or more pairs of driven rollers and a driving device used for driving the driving rollers, and the driving rollers and the driven rollers are arranged along the mesh material conveying direction and are respectively fixed at two ends of the first die. The net materials are automatically sent into the framework body cavity through the net material conveying device and then are integrally molded through injection, so that full-automatic production of the filter screen is realized, the existing production mode that manual work is adopted, one net material is placed into a mold for injection molding is changed, the production efficiency of the filter screen assembly is greatly improved, and meanwhile the product quality is improved.

Description

Filter assembly production equipment

technical field

The invention relates to a co-injection molding filter net of plastics and net materials, in particular to a production device of a filter net assembly.

Background technique

At present, the air inlet or the air flow channel of the air conditioner is provided with a filter assembly to filter the air to prevent dust or other impurities from entering the air conditioner and causing adverse effects on the air conditioner components. The filter screen assembly generally includes a mesh body forming a grid with a predetermined mesh and a skeleton body fixed to the mesh body. The skeleton body is formed by injection molding and kept fixed with the mesh body.

The existing production method of filter screen components mainly includes the following steps: unloading the net, injection molding, taking the product, cutting the excess net edge, and the net unloading and cutting the excess net edge are all dependent on manual labor, so the production method is backward, the efficiency is low, and the product quality is high. Not guaranteed. Each injection molding machine that produces filter nets needs to be equipped with 3 people, and the daily output is only 2-3 thousand pieces.

Contents of the invention

In view of the above-mentioned current state of the art, the technical problem to be solved by the present invention is to provide a filter assembly production device for automatic net material, so as to improve production efficiency and product quality, and reduce production cost.

The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a filter screen assembly production device, including a first mold and a second mold, the first mold has a first parting surface and a first mesh cutting blade, the first mold The mesh cutting blade is a closed ring structure, and the second mold has a second parting surface and a second mesh cutting blade, and the second mesh cutting blade is a closed ring structure; when the mold is closed, the first parting The surface and the second parting surface cooperate to form at least one skeleton body cavity, and the first mesh cutting blade cooperates with the second mesh cutting blade to cut the mesh; The mesh material conveying device in which the material enters the cavity of the skeleton body, the mesh conveying device includes one or more pairs of driving rollers, one or more pairs of driven rollers and a driving device for driving the driving rollers, the driving rollers and the driving rollers The driven rollers are arranged along the conveying direction of the web material and fixed on both ends of the first mold respectively.

In one of the embodiments, both the driving roller and the driven roller include a cylindrical base and a polyurethane layer disposed on the outer peripheral surface of the base.

In one of the embodiments, the web conveying device further includes at least two clamping cylinders, all of the clamping cylinders are arranged along the axial direction of the driving roller, and the piston rod of the clamping cylinder is connected to one of the clamping cylinders. The connection of the driving roller.

In one of the embodiments, the web conveying device further includes a web feeding control device, the web feeding control device includes a counting disc and a proximity switch, and the counting disc is fixedly installed on one end of one of the driving rollers and synchronized with it Rotate, the proximity switch is set opposite to the counting disc.

In one embodiment, when the mold is closed, the gap between the first mesh cutting blade and the second mesh cutting blade is L, and 0.02mm≤L≤0.05mm.

In one of the embodiments, the second die also includes a plurality of pressing blocks arranged on the outside of the second net cutting blade, and the pressing blocks are located in the mounting holes on the second die; During the process, the contact time between the outer end of the press block and the first parting surface is earlier than the cooperative cutting time between the first net cutting blade and the second net cutting blade.

In one of the embodiments, an elastic body is arranged between the inner end of the press block and the bottom of the installation hole.

In one of the embodiments, the filter assembly production device further includes a positioning assembly, and the positioning assembly includes a plurality of positioning protrusions arranged on the first mold and a plurality of positioning protrusions arranged on the second mold in line with the The positioning protrusions correspond to the positioning grooves one by one; during the mold closing process, the time when the positioning protrusions are inserted into the positioning grooves is earlier than the matching cutting time of the first net cutting blade and the second net cutting blade .

In one of the embodiments, the second mold further includes an ejection device, the ejection device includes one or more ejection cylinders and an air valve switch, the ejection cylinder is located on the second mold and connected to the filter screen In the through hole opposite to the mesh body of the component, the air valve switch is arranged on the air path of the ejection cylinder, and touches the air valve switch when the thimble of the mold is ejected to the maximum stroke.

In one embodiment, the second mold further includes a plurality of balance weights arranged along the feeding direction and located on both sides of the second mesh cutting blade. .

Compared with the prior art, the filter assembly production device provided by the present invention is provided with a mesh conveying device, through which the mesh is automatically fed into the cavity of the skeleton body, and then integrally injection-molded to realize filtration The fully automatic production of the net has changed the existing production method of manually putting a piece of net material into the mold for injection molding, which greatly improves the production efficiency of the filter net assembly and improves the product quality at the same time.

Description of drawings

Fig. 1 is a schematic structural view of a filter assembly production device in one of the embodiments of the present invention;

Fig. 2 is a schematic view showing the coordination of the first mesh cutting blade and the second mesh cutting blade in the filter screen assembly production device shown in Fig. 1;

Fig. 3 is a schematic diagram of the coordination of the positioning assembly in the filter screen assembly production device shown in Fig. 1;

Fig. 4 is a three-dimensional structural schematic diagram of the main transmission device of the mesh material conveying device in the filter screen assembly production device shown in Fig. 1;

Fig. 5 is a partially enlarged schematic diagram of a position I in Fig. 1 .

In the above figures, 100-the first mold, 110-the first parting surface, 120-the first mesh cutting blade, 130-positioning bump, 140-main transmission device, 141-the first frame, 142-driving roller , 143-hydraulic motor, 144-counting disc, 145-proximity switch, 146-clamping cylinder, 147-transmission gear, 150-guiding device, 151-second frame, 152-driven roller, 200-second mold , 210-the second parting surface, 220-the second mesh cutting blade, 230-locating groove, 240-pressure net block, 250-balance weight, 260-ejection cylinder, 270-air valve switch.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

It should be noted that: in this document, the first mold 100 and the first mold 100 are relative concepts, the first mold 100 can be a fixed mold or a moving mold, and the corresponding second mold 200 can be a moving mold or a fixed mold .

Please refer to Fig. 1, Fig. 1 shows the schematic structural view of the filter screen assembly production device in one of the embodiments of the present invention, the filter screen assembly production device includes a first mold 100 and a second mold 200, the left side of the first mold 100 The side surface forms the first parting surface 110, and the right side of the second mold 200 forms the second parting surface 210; when the mold is closed, the first parting surface 110 and the second parting surface 210 are matched and At least one skeleton cavity is formed. In this embodiment, two skeleton body cavities are formed, so that two filter screen assemblies can be molded at one time.

In this embodiment, the first mold 100 has a first mesh cutting edge 120, which is a closed ring structure, and the second mold 200 has a second mesh cutting edge 220, which is The net blade 220 is a closed ring structure. Fig. 2 shows the schematic diagram of cooperation between the first net cutting blade 120 and the second net cutting blade 220. When the mold is closed, the first net cutting blade 120 and the second net cutting blade 220 cooperate to cut the net, so that the net The material can be cut to the appropriate size during the mold closing process, and then injected. In this way, the product is a qualified product after it comes out, and there is no need for additional manual removal of excess mesh materials. Preferably, when the mold is closed, the gap between the first mesh cutting blade 120 and the second mesh cutting blade 220 is L, and 0.02mm≤L≤0.05mm. This gap is the key to ensure the neat cutting of the net and protect the cutting edge. If the gap is larger than this gap, the edge of the filter will be cut and drawn continuously, and then it will cause glue leakage; if the gap is less than 0.02mm, the mold processing requirements are very high, and it is easy to have dynamics. The cutting edge of the fixed die is in danger. If the cutting edge of the movable and fixed die touches, the life of the cutting edge will be greatly affected.

Continuing to refer to FIG. 1 , the first mold 100 is provided with a mesh conveying device for pulling the mesh into the cavity of the skeleton body, the mesh conveying device includes a main transmission device 140 and a guide device 150, the main transmission device 140 and The guiding device 150 is respectively fixed on the lower end and the upper end of the first mold 100 .

Fig. 3 shows the three-dimensional schematic diagram of the main transmission device 140, the main transmission device 140 includes a first frame 141, a pair (or multiple pairs) of driving rollers 142 installed on the first frame 141 and a driving gear The driving device of the driving roller 142 is described above. The driving device in this embodiment includes a hydraulic motor 143 and a pair of meshing transmission gears 147 arranged at one end of the pair of driving rollers 142 . Preferably, the main transmission device 140 further includes at least two clamping cylinders 146, all of the clamping cylinders 146 are arranged along the axial direction of the driving roller 142, and the piston rod of the clamping cylinder 146 is connected to one of the clamping cylinders 146. The connection of the driving roller 142. The two driving rollers 142 are clamped by two clamping cylinders 146, and the clamping force can be adjusted through a pressure regulating valve, and the two driving rollers 142 can be opened when changing the net material. Preferably, the main transmission device 140 also includes a web feeding control device, the web feeding control device includes a counting disc 144 and a proximity switch 145, and the counting disc 144 is fixedly installed on one end of one of the driving rollers 142 and synchronized with it Rotate, the proximity switch 145 is set opposite to the counting disc 144 . The hydraulic motor 143 is controlled by the injection molding machine, and the machine tool is used to control the transmission distance by using the net feeding control device, and the net feeding at fixed distances can be realized for filter screen products of different sizes.

The guiding device 150 includes a second frame 151 and multiple pairs of driven rollers 152 installed on the second frame 151 .

Preferably, the driving roller 142 and the driven roller 152 include a cylindrical substrate and a polyurethane layer disposed on the outer peripheral surface of the substrate, and the polyurethane layer can realize clamping of the mesh without slipping.

Continuing to refer to FIG. 1 , preferably, the second die 200 further includes a plurality of pressing blocks 240 arranged at intervals along the circumferential direction outside the second net cutting blade 220 , and the pressing blocks 240 are located on the second die. 200; in the mold clamping process, the contact time between the outer end of the press block 240 and the first parting surface 110 is earlier than that of the first net cutting blade 120 and the second net cutting blade 220 with cutting time. Preferably, an elastic body is disposed between the inner end of the press block 240 and the bottom of the installation hole. The net pressing block 240 is used to make the net material be pressed around the net material before the first net cutting blade 120 and the second net cutting blade 220 are in contact, and the net material is tightened along with the mold closing to make the net material smooth.

As shown in Figures 1 and 4, preferably, the filter assembly production device further includes a positioning assembly, which includes a plurality of positioning projections 130 provided on the first mold 100 and a plurality of positioning projections 130 provided on the second mold 100. The positioning groove 230 corresponding to the positioning protrusion 130 on the mold 200; during the mold clamping process, the positioning protrusion 130 is inserted into the positioning groove 230 earlier than the first mesh cutting blade 120 The purpose of the cutting time with the second net cutting blade 220 is to make the positioning protrusion 130 contact the positioning groove 230 first and then reach the first net cutting blade 120 and the second net cutting blade 220 to avoid bruising the edge .

As shown in Figures 1 and 5, the second mold 200 also includes an ejector device, which includes one or more ejector cylinders 260 and an air valve switch 270, and the ejector cylinder 260 is located on the second mold 200. In the through hole opposite to the mesh body of the filter screen assembly, the air valve switch 270 is set on the air path of the ejection cylinder 260, and touches the air valve when the thimble of the mold is ejected to the maximum stroke switch 270 . Because the filter product is relatively soft and has a sloping top. Generally, after the thimble is ejected, the product will follow the inclined ejector or stick to the thimble, and cannot fall off, so it cannot be automatically and continuously produced. Therefore, a pneumatic secondary ejector device is designed on the second mold 200. When the thimble of the second mold is pushed out to the end, it touches the air valve switch 270, and the ejector cylinder 260 is ventilated and ejected, and the product is ejected from the thimble.

Continuing to refer to FIG. 1 , the second die 200 of this embodiment further includes a plurality of balance weights 250 arranged along the feeding direction and located on both sides of the second mesh cutting blade 220 .

The working principle of the filter screen assembly production device of this embodiment is: the mesh material is sent into the inside of the skeleton body cavity through the mesh material conveying device, and then the molds are closed, so that the first parting surface 110 of the first mold 100 and the second mold 200 The second parting surface 210 is matched; in the mold closing process, the first mesh cutting blade 120 and the second mesh cutting blade 220 cooperate to cut the mesh material to form the mesh shape in the filter assembly that needs to be made. body. After the mold closing is completed, the injection molding process is carried out to complete the production of the filter screen assembly. After cooling, the mold is opened. During the mold opening process, the thimble of the second mold 200 first pushes out a part of the filter screen assembly. When the thimble of the second mold 200 touches the button of the ejection control assembly, the ejection cylinder 260 acts to eject the filter assembly. The piston rod of the air cylinder 260 is stretched out to push out the filter screen assembly completely. Then, the controller of the injection molding machine sends a control signal to the mesh material conveying device, and the hydraulic motor 143 of the mesh material conveying device acts to send the cut mesh material away. When all the cut net materials are sent away, the counter sends a signal to the controller of the injection molding machine, and the injection molding machine starts the next injection molding procedure.

It can be seen that the production device of the filter screen assembly in the embodiment of the present invention is equipped with a mesh material conveying device, and the mesh material is automatically sent into the cavity of the skeleton body through the mesh material conveying device, and then integrally injection-molded to realize the completeness of the filter screen. Automatic production, thus changing the existing production method of artificially putting a piece of mesh material into a mold for injection molding, greatly improving the production efficiency of filter mesh components, and improving product quality at the same time.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A filter screen assembly production device, comprising a first mold and a second mold, the first mold has a first parting surface and a first net cutting blade, and the first net cutting blade is a closed ring structure, so The second mold has a second parting surface and a second mesh cutting edge, and the second mesh cutting edge is a closed ring structure; when the mold is closed, the first parting surface and the second parting surface are matched and At least one skeleton body cavity is formed, and the first mesh cutting blade cooperates with the second mesh cutting blade to cut the mesh; it is characterized in that, on the first mold, there is a device for pulling the mesh material into the skeleton body cavity A web material conveying device, the web material conveying device includes one or more pairs of driving rollers, one or more pairs of driven rollers and a driving device for driving the driving rollers, the driving rollers and the driven rollers move along the web material The conveying direction is arranged and respectively fixed at both ends of the first mold. 2. The filter assembly production device according to claim 1, characterized in that, both the driving roller and the driven roller comprise a cylindrical base and a polyurethane layer disposed on the outer peripheral surface of the base. 3. The filter screen assembly production device according to claim 1, characterized in that, the mesh conveying device further comprises at least two clamping cylinders, all of the clamping cylinders are arranged axially along the driving roller, And the piston rod of the clamping cylinder is connected to one of the driving rollers. 4. The filter screen assembly production device according to claim 1, characterized in that, the mesh conveying device also includes a net feeding control device, which includes a counting disc and a proximity switch, and the counting disc is fixedly installed on the One end of one of the driving rollers rotates synchronously with it, and the proximity switch is arranged opposite to the counting disc. 5. The filter screen assembly production device according to any one of claims 1 to 4, characterized in that, in the mold clamping state, the gap between the first mesh cutting edge and the second mesh cutting edge is L, and 0.02mm≤L≤0.05mm. 6. The filter screen assembly production device according to any one of claims 1 to 4, wherein the second mold further comprises a plurality of pressing blocks arranged outside the second net cutting blade, the The pressing block is located in the installation hole on the second mold; during the mold closing process, the contact time between the outer end of the pressing block and the first parting surface is earlier than that between the first mesh cutting blade and the first parting surface. The matching cutting time of the second net cutting blade. 7 . The filter assembly production device according to claim 6 , wherein an elastic body is arranged between the inner end of the press block and the bottom of the installation hole. 8 . 8. The filter screen assembly production device according to any one of claims 1 to 4, characterized in that, the filter screen assembly production device also includes a positioning assembly, which includes a positioning assembly arranged on the first mold A plurality of positioning protrusions and positioning grooves corresponding to the positioning protrusions arranged on the second mold; in the mold closing process, the time of inserting the positioning protrusions into the positioning grooves is earlier than that of the positioning protrusions. The cooperative cutting time of the first net cutting blade and the second net cutting blade. 9. The filter screen assembly production device according to any one of claims 1 to 4, characterized in that, the second die also includes an ejector device, which includes one or more ejector cylinders and air valves Switch, the ejection cylinder is located in the through hole on the second mold, opposite to the mesh body of the filter screen assembly, the air valve switch is arranged on the air path of the ejection cylinder, and when the thimble of the mold ejects Touch described gas valve switch when reaching maximum stroke. 10. The filter screen assembly production device according to any one of claims 1 to 4, characterized in that, the second mold further comprises two blades arranged along the feeding direction and located on both sides of the second mesh cutting edge. Multiple balance blocks.