A plastic parts forming mold for a metering box

Abstract

The invention relates to the technical field of forming molds, in particular to a forming mold for plastic accessories on a metering box; the mold comprises a body, a chassis is fixedly installed on the upper end of the body; an injection molding machine is fixedly installed on the upper end of the chassis; the injection molding machine is fixedly installed on the upper end of the body; the invention provides a No. 1 spray plate and a No. 2 spray plate, and in the process that the No. 1 spray plate and the No. 2 spray plate slide downward along a slide groove, an atomizing nozzle sprays a release agent in the form of an atomized spray, and the No. 1 spray plate and the No. 2 spray plate always maintain a constant spraying angle and distance with a movable mold and a fixed mold, so that the amount of release agent received by the movable mold and the fixed mold is the same; thereby avoiding the problem of uneven spraying caused by manual spraying, improving the uniformity of spraying of the release agent, and further avoiding the inconsistency of plastic cooling and curing processes at different areas of the mold, so as to prevent the transparent product surface from having different gloss or atomization phenomenon, and improving the demolding quality of the transparent product.

Description

Technical Field

[0001] The invention relates to the technical field of forming moulds, in particular to a forming mould for plastic accessories on a metering box. Background Art

[0002] A meter box is a box used to store and protect various measuring devices, and is commonly used in the installation of water meters, electric meters, gas meters and other measuring instruments. The meter box is composed of a box body, a box door, a plastic case circuit breaker, a small circuit breaker, a leakage circuit breaker, an electric meter, a polyvinyl chloride insulated wire, a junction box, etc. A transparent component is often installed on the box door to facilitate users to visually check the metering equipment without opening the box door. This transparent component used to observe the internal instrument readings or other equipment status is usually called an "observation window" or "transparent window". The observation window on the door of the meter box is made of a variety of materials, such as glass, plastic, plexiglass, etc. However, the existing observation windows More plastics are used because plastics have better impact resistance, are not easy to break, are safer than glass, and have lower production and processing costs than organic glass; they have strong weather resistance and chemical corrosion resistance, can maintain stable performance in various environments, and are more durable; polycarbonate and acrylic are the main materials for producing plastic observation windows because polycarbonate or acrylic materials not only have very high optical transparency and good impact resistance, but also can withstand the influence of outdoor environment, such as temperature changes and ultraviolet radiation, which can enhance the anti-aging ability of the observation window and effectively extend the service life of the observation window;

[0003] Most of the existing observation windows are obtained by injection molding using an injection molding machine. When polycarbonate or acrylic materials are injected, they are easy to adhere to the mold because they have relatively high adhesion after melting. This makes the product prone to fogging or uneven gloss during demolding, thereby affecting the transparency of the observation window. Therefore, it is necessary to spray a release agent on the mold surface so that the release agent can ensure that the product can be removed from the mold intact.

[0004] The existing release agent is mostly sprayed manually on the mold surface. However, when spraying the release agent manually, it is easy to have different spray amounts of the release agent in different areas, that is, the release agent is sprayed unevenly. This leads to inconsistency in the cooling and curing process of the plastic in different areas, resulting in uneven stress in the cooling and shrinking process of different areas of the product, which in turn leads to uneven light scattering on the product surface, resulting in uneven gloss or atomization on the transparent product surface.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a plastic accessory molding die for a metering box, which solves the above technical problems. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art, the present invention proposes a plastic accessory molding mold on a metering box. The present invention sets a No. 1 spray plate and a No. 2 spray plate. During the process of the No. 1 spray plate and the No. 2 spray plate sliding downward along the slide groove, the atomizing nozzle will spray the release agent in the form of an atomized spray, and the No. 1 spray plate and the No. 2 spray plate always maintain a constant spraying angle and distance with the movable mold and the fixed mold, so that the movable mold and the fixed mold receive the same amount of release agent; thereby avoiding the problem of uneven spraying caused by manual spraying, improving the uniformity of the release agent spraying, and further avoiding the inconsistency of the plastic cooling and curing process in different areas of the mold, so as to prevent the transparent product surface from having uneven gloss or atomization, thereby improving the demolding quality of the transparent product.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a plastic accessory forming mold for a metering box according to the present invention comprises:

[0008] A machine body, wherein a chassis is fixedly installed on the upper end of the machine body; an injection molding machine is fixedly installed on the upper end of the chassis; the injection molding machine is fixedly installed on the upper end of the machine body; a movable mold and a fixed mold are arranged in the machine body; the fixed mold is fixedly installed on the upper end of the machine body; an injection port connected to the injection molding machine is provided on a side of the fixed mold away from the movable mold; the movable mold is fixedly connected to the inner wall of the machine body through a hydraulic push rod; a demoulding rod is provided on a side of the movable mold close to the hydraulic push rod; the demoulding rod is connected to the movable mold in a sliding and sealing manner; a connecting plate is fixedly connected to the side of the demoulding rod away from the machine body; the connecting plate and the movable mold are connected through an electro-hydraulic push rod;

[0009] A spray assembly, the spray assembly comprises a No. 1 spray plate and a No. 2 spray plate; both sides of the movable mold and the fixed mold are provided with slide grooves; the No. 1 spray plate is slidably connected to the slide grooves on both sides of the movable mold by a connecting rod; the No. 2 spray plate is slidably connected to the slide grooves on both sides of the fixed mold by a connecting rod; a spray port is provided on the side of the No. 1 spray plate and the No. 2 spray plate away from each other; a liquid storage cavity is provided inside the No. 1 spray plate and the No. 2 spray plate; the liquid storage cavity and the spray port are connected through an air hole; an atomizing nozzle is fixedly installed in the spray port; the atomizing nozzle is connected to the air hole; a pressure-stabilizing valve is fixedly installed in the air hole; a feed port is provided on the side of the movable mold and the fixed mold away from each other; an air duct is provided inside the connecting rod; the air duct and the feed port are connected through a connecting unit; a driving unit is installed in the slide groove; the driving unit is used to drive the connecting rod to slide in the slide groove.

[0010] Preferably, the driving unit includes a driving wheel; a screw is rotatably connected in the slide groove; the connecting rod is helically connected to the screw; the driving wheel is rotatably connected to the movable mold; a cavity is opened inside the movable mold; a bevel gear set is rotatably installed in the cavity; the bevel gear set includes a bevel gear shaft and a bevel gear ring that mesh with each other; the bevel gear shaft is fixedly connected to the screw; and the bevel gear ring is connected to the driving wheel.

[0011] Preferably, the bevel gear ring is slidingly connected to the driving wheel; a connecting spring is provided between the bevel gear ring and the inner wall of the cavity; one end of the connecting spring is fixedly connected to the bevel gear ring, and the other end is rotatably connected to the inner wall of the cavity; an electromagnetic ring is inlaid on the inner wall of the cavity; the bevel gear ring is made of iron material.

[0012] Preferably, the driving unit also includes a screw, one end of which is rotatably connected to the fixed mold, and the other end is rotatably connected to a connecting block; the connecting block is fixedly connected to the machine body; a cylindrical groove is provided on the side wall of the movable mold; the screw is rotatably connected in the cylindrical groove; two mutually meshing bevel gear shafts are installed inside the fixed mold; one of the bevel gear shafts is fixedly connected to the screw; the other bevel gear shaft is fixedly connected to the screw; a pushing block is installed on the inner wall of the cylindrical groove; the pushing block meshes with the screw for transmission.

[0013] Preferably, a groove is provided on the inner wall of the cylindrical groove; the pushing block is slidably connected in the groove; the pushing block is fixedly connected to the bottom of the groove by a fixing spring; and an electromagnetic sheet is inlaid at the bottom of the groove.

[0014] Preferably, the connecting unit includes a corrugated airbag; the corrugated airbag is sleeved on the surface of the screw; one end of the corrugated airbag is fixedly connected to the lower end wall of the slide groove, and the other end is fixedly connected to the connecting rod; the feed port and the airway are both connected to the corrugated airbag.

[0015] Preferably, a laser distance sensor is inlaid on the upper end wall of the slide groove.

[0016] Preferably, a convex strip is fixedly connected to the surface of the driving wheel; the convex strip is made of silicone rubber material.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention provides a No. 1 spray plate and a No. 2 spray plate. When the No. 1 spray plate and the No. 2 spray plate slide downward along the slide groove, the atomizing nozzle sprays the release agent in the form of an atomized spray. The No. 1 spray plate and the No. 2 spray plate always maintain a constant spraying angle and distance with the movable mold and the fixed mold, so that the movable mold and the fixed mold receive the same amount of release agent. This avoids the problem of uneven spraying caused by manual spraying, improves the uniformity of the release agent spraying, and further avoids the inconsistency of the plastic cooling and curing process in different areas of the mold, so as to prevent the transparent product surface from having different gloss or atomization, and improves the demoulding quality of the transparent product.

[0019] 2. The present invention sets convex strips in order to increase the direct friction between the driving wheel and the machine body; by adding convex strips on the surface of the driving wheel, the friction coefficient between the driving wheel and the machine body is increased, and the convex strips are made of silicone rubber material, so that when the driving wheel rolls on the machine body, the convex strips between the driving wheel and the machine body are elastically deformed by being squeezed, so that the contact area between the convex strips and the machine body is increased, and in addition, the deformed convex strips will generate squeezing force on the machine body under the action of their own elastic restoring force, so that the friction between the machine body and the convex strips is increased, thereby improving the rolling effect between the driving wheel and the machine body, and strengthening the effect of the driving wheel driving the bevel gear shaft and the screw to rotate through the bevel gear ring, thereby ensuring that the No. 1 spray plate can stably slide along the slide groove, thereby further improving the practical application effect of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a three-dimensional diagram of the interior of the chassis in the present invention;

[0023] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0024] Figure 4 It is a structural schematic diagram of the movable mold used in the present invention;

[0025] Figure 5 yes Figure 4 The enlarged view of point B in the middle;

[0026] Figure 6 It is a structural schematic diagram of the fixed mold used in the present invention;

[0027] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8yes Figure 6 The enlarged view of point D in the middle;

[0029] Fig. 9 yes Figure 6 Enlarged view of point E in the middle;

[0030] In the figure: 1, machine body; 11, chassis; 111, hydraulic push rod; 12, injection molding machine; 13, movable mold; 131, demoulding rod; 132, connecting plate; 133, electro-hydraulic push rod; 134, cavity; 135, bevel gear shaft; 136, bevel gear ring; 137, connecting spring; 138, electromagnetic ring; 14, fixed mold; 15, slide groove; 151, connecting rod; 152, airway; 153, screw; 154, wave Pattern airbag; 155, laser distance sensor; 16, feed port; 17, drive wheel; 18, screw rod; 181, cylindrical groove; 182, bevel gear shaft; 183, push block; 184, groove; 185, fixing spring; 186, electromagnetic sheet; 19, convex strip; 2, No. 1 spray plate; 21, spray port; 22, liquid storage chamber; 23, air hole; 24, atomizing nozzle; 25, pressure regulating valve; 3, No. 2 spray plate. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figures 1 to 9 As shown, the plastic accessory forming mold for a metering box according to the present invention comprises:

[0033] A machine body 1, wherein a chassis 11 is fixedly installed on the upper end of the machine body 1; an injection molding machine 12 is fixedly installed on the upper end of the machine body 1; a movable mold 13 and a fixed mold 14 are arranged in the machine body 11; the fixed mold 14 is fixedly installed on the upper end of the machine body 1; an injection port connected to the injection molding machine 12 is provided on a side of the fixed mold 14 away from the movable mold 13; the movable mold 13 is fixedly connected to the inner wall of the machine body 11 through a hydraulic push rod 111; a demoulding rod 131 is provided on a side of the movable mold 13 close to the hydraulic push rod 111; the demoulding rod 131 is slidingly and sealingly connected to the movable mold 13; a connecting plate 132 is fixedly connected to the side of the demoulding rod 131 away from the machine body 1; the connecting plate 132 is connected to the movable mold 13 through an electro-hydraulic push rod 133;

[0034] A spray assembly, the spray assembly includes a No. 1 spray plate 2 and a No. 2 spray plate 3; both sides of the movable mold 13 and the fixed mold 14 are provided with slide grooves 15; the No. 1 spray plate 2 is slidably connected to the slide grooves 15 on both sides of the movable mold 13 through a connecting rod 151; the No. 2 spray plate 3 is slidably connected to the slide grooves 15 on both sides of the fixed mold 14 through a connecting rod 151; the No. 1 spray plate 2 and the No. 2 spray plate 3 are provided with a spray port 21 on a side away from each other; the No. 1 spray plate 2 and the No. 2 spray plate 3 are provided with a liquid storage cavity 22; the liquid storage cavity 22 It is connected to the injection port 21 through an air hole 23; an atomizing nozzle 24 is fixedly installed in the injection port 21; the atomizing nozzle 24 is connected to the air hole 23; a pressure-stabilizing valve 25 is fixedly installed in the air hole 23; a feed port 16 is provided on the side away from each other of the movable mold 13 and the fixed mold 14; an air channel 152 is provided inside the connecting rod 151; the air channel 152 is connected to the feed port 16 through a connecting unit; a driving unit is installed in the slide groove 15; the driving unit is used to drive the connecting rod 151 to slide in the slide groove 15.

[0035] As an embodiment of the present invention, the driving unit includes a driving wheel 17; a screw rod 153 is rotatably connected in the slide groove 15; the connecting rod 151 is spirally connected to the screw rod 153; the driving wheel 17 is rotatably connected to the movable mold 13; a cavity 134 is opened inside the movable mold 13; a bevel gear set is rotatably installed in the cavity 134; the bevel gear set includes a bevel gear shaft 135 and a bevel gear ring 136 that are meshed with each other; the bevel gear shaft 135 is fixedly connected to the screw rod 153; the bevel gear ring 136 is connected to the driving wheel 17.

[0036] As an embodiment of the present invention, the bevel gear ring 136 is slidingly connected to the driving wheel 17; a connecting spring 137 is provided between the bevel gear ring 136 and the inner wall of the cavity 134; one end of the connecting spring 137 is fixedly connected to the bevel gear ring 136, and the other end is rotatably connected to the inner wall of the cavity 134; an electromagnetic ring 138 is inlaid on the inner wall of the cavity 134; the bevel gear ring 136 is made of iron material.

[0037] As an embodiment of the present invention, the driving unit also includes a screw rod 18, one end of which is rotatably connected to the fixed mold 14, and the other end is rotatably connected to a connecting block; the connecting block is fixedly connected to the body 1; a cylindrical groove 181 is provided on the side wall of the movable mold 13; the screw rod 18 is rotatably connected in the cylindrical groove 181; two mutually meshing bevel gear shafts 182 are installed inside the fixed mold 14; one of the bevel gear shafts 182 is fixedly connected to the screw 153; the other bevel gear shaft 182 is fixedly connected to the screw rod 18; a pushing block 183 is installed on the inner wall of the cylindrical groove 181; the pushing block 183 meshes with the screw rod 18 for transmission.

[0038] As an embodiment of the present invention, a groove 184 is formed on the inner wall of the cylindrical groove 181; the pushing block 183 is slidably connected in the groove 184; the pushing block 183 is fixedly connected to the bottom of the groove 184 by a fixing spring 185; and an electromagnetic sheet 186 is inlaid at the bottom of the groove 184.

[0039] As an embodiment of the present invention, the connecting unit includes a corrugated airbag 154; the corrugated airbag 154 is sleeved on the surface of the screw 153; one end of the corrugated airbag 154 is fixedly connected to the lower end wall of the slide groove 15, and the other end is fixedly connected to the connecting rod 151; the feed port 16 and the air channel 152 are both connected to the corrugated airbag 154;

[0040] During operation, the existing mold release agent is mostly sprayed on the mold surface by manual spraying. However, when the mold release agent is sprayed manually, it is easy to have different spray amounts of the mold release agent in different areas, that is, the mold release agent is sprayed unevenly. This leads to inconsistency in the cooling and curing process of the plastic in different areas, resulting in uneven stress in the cooling and shrinking process of different areas of the product, which in turn leads to uneven light scattering on the product surface, resulting in uneven gloss or atomization on the transparent product surface.

[0041] In this regard, the present invention sets a No. 1 spray plate 2 and a No. 2 spray plate 3. When the No. 1 spray plate 2 and the No. 2 spray plate 3 slide downward along the slide groove 15, the atomizing nozzle 24 sprays the release agent in the form of atomized spray, and the No. 1 spray plate 2 and the No. 2 spray plate 3 always maintain a constant spraying angle and distance with the movable mold 13 and the fixed mold 14, so that the movable mold 13 and the fixed mold 14 receive the same amount of release agent; thereby avoiding the problem of uneven spraying caused by manual spraying, improving the uniformity of spraying of the release agent, and further avoiding the inconsistency of the cooling and curing process of the plastic in different areas of the mold, so as to prevent the transparent product surface from having different gloss or atomization phenomenon, and improve the demolding quality of the transparent product;

[0042] The feed inlet 16 of the movable mold 13 and the fixed mold 14 is connected to the external delivery pump through a connecting pipe, and the shape of the atomized spray sprayed by the atomizing nozzle 24 is fan-shaped; in the initial state, the movable mold 13 is a convex mold, and its molding area is a convex structure, and the fixed mold 14 is a concave mold, and its molding area is a concave structure. The movable mold 13 and the fixed mold 14 are in a closed state, and the No. 1 spray plate 2 and the No. 2 spray plate 3 are distributed up and down. When injection molding is required, the hydraulic push rod 111 is controlled to pull the movable mold 13 away from the fixed mold 14, so that the movable mold 13 is separated from the fixed mold 14; because the No. 1 spray plate 2 and the No. 2 spray plate 3 are both located above the movable mold 13 and the fixed mold 14 at this time, When the No. 1 spray plate 2 and the No. 2 spray plate 3 descend, the movable mold 13 and the fixed mold 14 will block the No. 1 spray plate 2 and the No. 2 spray plate 3 from descending; for this purpose, the present invention sets an electromagnetic sheet 186 and an electromagnetic ring 138; so that when the hydraulic push rod 111 pulls the movable mold 13 away from the fixed mold 14, the electromagnetic sheet 186 and the electromagnetic ring 138 are both in a powered state, and the push block 183 and the bevel gear ring 136 are both made of iron material, so that the electromagnetic ring 138 generates a magnetic adsorption force on the bevel gear ring 136, so that the bevel gear ring 136 squeezes the connecting spring 137 away from the bevel gear shaft 135; so that the bevel gear ring 136 and the bevel gear shaft 135 are separated state, and the electromagnetic sheet 186 absorbs the push block 183 and squeezes the fixed spring 185 into the groove 184, so that the push block 183 does not mesh with the screw rod 18; therefore, in the process of the hydraulic push rod 111 pulling the movable mold 13 away from the fixed mold 14, the screw rod 18 slides in the cylindrical groove 181, and the movable mold 13 will drive the driving wheel 17 to move synchronously, so that the driving wheel 17 rolls on the upper end of the machine body 1, so that the rolling driving wheel 17 drives the bevel gear ring 136 to rotate in the cavity 134, at this time, the bevel gear ring 136 will not drive the screw rod 153 connected to the movable mold 13 to rotate, and the screw rod 18 will not drive the screw rod 153 connected to the fixed mold 14 to rotate; When the mold 13 is separated from the fixed mold 14, the No. 1 spray plate 2 and the No. 2 spray plate 3 will not be driven by the screw 153, and the slide 15 will drop until the movable mold 13 drives the No. 1 spray plate 2 to pass over the No. 2 spray plate 3. At this time, the electromagnetic sheet 186 and the electromagnetic ring 138 are controlled to be powered off, so that the bevel gear ring 136 and the push block 183 are no longer attracted by the electromagnetic ring 138 and the electromagnetic sheet 186, so that the bevel gear ring 136 is pushed close to the bevel gear shaft 135 by the restoring force of the connecting spring 137, so that the bevel gear ring 136 is meshed with the bevel gear shaft 135; and the push block 183 extends out of the groove 184 and meshes with the screw 18 under the push of the restoring force of the fixed spring 185;

[0043] As the hydraulic push rod 111 continues to pull the movable mold 13 away from the fixed mold 14, the movable mold 13 drives the bevel gear ring 136 to rotate through the driving wheel 17, so that the bevel gear ring 136 can drive the bevel gear shaft 135 meshing with it to rotate, so that the bevel gear shaft 135 can drive the screw 153 fixed to it to rotate, so that the screw 153 can drive the connecting rod 151 connected to its spiral transmission to descend along the slide groove 15 during the rotation process, so that the connecting rod 151 drives the No. 1 spray plate 2 to descend, and when the connecting plate 132 descends along the slide groove 15, the connecting plate 13 2 will squeeze the corrugated airbag 154. Since the corrugated airbag 154 is connected with the feed port 16 and the air hole 23, in the initial state, the delivery pump delivers the release agent to the corrugated airbag 154 through the feed port 16. A one-way valve is installed in the feed port 16. When the corrugated airbag 154 is squeezed, the release agent in the corrugated airbag 154 can enter the liquid storage chamber 22 through the air channel 152 inside the connecting rod 151; since a pressure-stabilizing valve 25 is installed in the air hole 23, after the release agent enters the liquid storage chamber 22, it cannot be discharged through the pressure-stabilizing valve 25, so that the release agent is stored in the liquid storage chamber 22. The No. 1 spray plate 2 slides downward, so that the No. 1 spray plate 2 continuously squeezes the release agent in the corrugated airbag 154 into the liquid storage chamber 22, so that the pressure of the release agent in the liquid storage chamber 22 continues to increase; until the No. 1 spray plate 2 drops to the protruding structure of the movable mold 13, at this time, the pressure of the release agent storage liquid in the liquid storage chamber 22 reaches the maximum, so that the release agent in the liquid storage chamber 22 pushes the pressure-stabilizing valve 25 in the air hole 23 to open, so that the release agent enters the atomizing nozzle through the air hole 23, so that the atomizing nozzle sprays a fan-shaped release agent spray, so that the sprayed spray can be evenly sprayed through the spray port 21 Spraying on the protruding structure of the movable mold 13; when the No. 1 spraying plate 2 passes over the protruding structure of the movable mold 13, the electromagnetic ring 138 is controlled to be energized, so that the electromagnetic ring 138 adsorbs the bevel gear ring 136 away from the bevel gear shaft 135, so that the driving wheel 17 no longer drives the screw 153 to rotate through the bevel gear ring 136 and the bevel gear shaft 135. At this time, the No. 1 spraying plate 2 no longer squeezes the corrugated airbag 154 downward, so that the release agent in the corrugated airbag 154 is no longer squeezed and sprayed out through the atomizing nozzle 24, thereby reducing the waste of the release agent, so that the practicality of the present invention is further improved;Similarly, after the electromagnetic sheet 186 is powered off, as the hydraulic push rod 111 pulls the movable mold 13 away from the fixed mold 14, the movable mold 13 will drive the pushing block 183 to move synchronously, so that the pushing block 183 meshing with the screw rod 18 slides in the spiral groove of the screw rod 18, so that the pushing block 183 pushes the screw rod 18 to rotate through the spiral groove of the screw rod 18, so that the rotating screw rod 18 drives the screw rod 153 to rotate through the two mutually meshing bevel gear shafts 182, so that the screw rod 153 of the fixed mold 14 can rotate and drive the connecting rod 151 connected to its spiral transmission to descend along the slide groove 15, so that the connecting rod 151 drives the No. 2 spray plate 3 to descend, so that the No. 2 spray plate 3 can squeeze the corrugated airbags 154 in the slide grooves 15 on both sides of the fixed mold 14 during the descent process, so that the release agent in the corrugated airbags 154 enters the No. 2 The first spray plate 2 and the second spray plate 3 are in the liquid storage cavity 22 of the spray plate 3 until the second spray plate 3 moves to the concave structure of the fixed mold 14. At this time, the pressure regulating valve 25 in the second spray plate 3 is opened, so that the mold release agent in the liquid storage cavity 22 of the second spray plate 3 enters the atomizing nozzle 24 through the air hole 23, so that the atomizing nozzle 24 sprays the mold release agent on the concave structure of the fixed mold 14. During the downward sliding process of the first spray plate 2 and the second spray plate 3, a constant spraying angle and spraying distance are maintained with the movable mold 13 and the fixed mold 14. Under the action of the pressure regulating valve 25, the amount of the mold release agent sprayed is also constant, so that the mold release agent is sprayed evenly, thereby ensuring that the cooling and curing process of the plastics in different areas of the movable mold 13 and the fixed mold 14 after injection is consistent, avoiding the appearance of different gloss or atomization on the surface of the transparent product, and improving the demoulding quality of the transparent product;

[0044] After the spraying of the release agent is completed, the electromagnetic sheet 186 and the electromagnetic ring 138 are first controlled to be de-energized, so that the hydraulic push rod 111 pushes the movable mold 13 and the fixed mold 14 to move closer to each other. At this time, the driving wheel 17 drives the screw 153 in the movable mold 13 to rotate, so that the screw 153 in the movable mold 13 drives the No. 1 spray plate 2 to rise through the connecting rod 151, and the pushing block 183 drives the screw 18 to rotate, so that the screw 18 drives the screw 153 in the fixed mold 14 to rotate through the bevel gear set, so that the screw 153 in the fixed mold 14 can drive the No. 2 spray plate 3 to rise through the connecting block connected to its spiral transmission, so that during the rising process of the No. 1 spray plate 2 and the No. 2 spray plate 3, the No. 1 spray plate 2 and the No. 2 spray plate 3 are The spray plate 2 and the second spray plate 3 pull the corrugated airbag 154 to rise and stretch through the connecting block, so that the space in the stretched corrugated airbag 154 increases. At this time, the external infusion pump delivers the release agent to the corrugated airbag 154; when the connecting rod 151 contacts the upper end wall of the slide groove 15, the electromagnetic sheet 186 and the electromagnetic ring 138 are controlled to be energized, so that the push block 183 is attracted by the electromagnetic sheet 186 and enters the groove 184 and no longer contacts the screw rod 18, and the bevel gear ring 136 is also attracted by the electromagnetic ring 138 and moves away from the bevel gear shaft 135 and separates from the bevel gear shaft 135. At this time, the first spray plate 2 and the second spray plate 3 no longer rise; until the hydraulic push rod 111 The movable mold 13 is pushed to close the mold with the fixed mold 14. At this time, the concave structure of the fixed mold 14 and the convex structure of the movable mold 13 form a cavity; the polycarbonate or acrylic material is added to the injection molding machine 12 through the hopper, so that the injection molding machine 12 is controlled to melt the polycarbonate or acrylic material and inject it into the cavity of the movable mold 13 and the fixed mold 14 through the injection port; after the molten material in the cavity is cooled and hardened, the required metering box observation window is obtained, and the hydraulic push rod 111 is controlled to pull the movable mold 13 and the fixed mold 14 apart. Because the contact area between the movable mold 13 and the observation window is large, the observation window contacts the movable mold 13 and is driven away from the fixed mold 14 by the movable mold 13; when the No. 1 spray plate 2 is far away After leaving the No. 2 spray plate 3, first control the electro-hydraulic push rod 133 to pull the connecting plate 132 close to the movable mold 13, so that the connecting plate 132 pushes the demoulding rod 131 to make sliding sealing contact with the movable mold 13, so that the end of the demoulding rod 131 away from the connecting plate 132 pushes the product on the protruding structure of the movable mold 13 to separate from the movable mold 13. At this time, the user controls the material taking system to remove the product on the protruding structure of the movable mold 13; after the product is removed, control the electromagnetic sheet 186 and the electromagnetic ring 138 to be energized, so that the No. 1 spray plate 2 and the No. 2 spray plate 3 spray the demoulding agent on the molding areas of the movable mold 13 and the fixed mold 14; after the spraying of the demoulding agent is completed, the next injection molding is performed again; and this is repeated.

[0045] As an implementation mode of the present invention, a laser distance sensor 155 is embedded on the upper end wall of the slide slot 15 .

[0046] As an embodiment of the present invention, a convex strip 19 is fixedly connected to the surface of the driving wheel 17; the convex strip 19 is made of silicone rubber material;

[0047] During operation, when the No. 1 spray plate 2 and the No. 2 spray plate 3 pass over the molding areas of the movable mold 13 and the fixed mold 14, the staff needs to control the electromagnetic sheet 186 and the electromagnetic ring 138 to cut off the power. If the staff does not react in time, the No. 1 spray plate 2 and the No. 2 spray plate 3 will continue to descend and squeeze the release agent in the corrugated airbag 154 to spray out, thereby causing waste of the release agent. For this purpose, the present invention sets a laser distance sensor 155 so that the laser distance sensor 155 can detect the distance between it and the connecting rod 151, that is, when the No. 1 spray plate 2 and the No. 2 spray plate 3 pass over the molding area, the distance between the connecting rod 151 and the laser distance sensor 155 is the maximum setting value, and the distance between the connecting rod 151 and the laser distance sensor 155 is the maximum setting value. When the distance sensor 155 is in contact, it is the minimum setting value. When the laser distance sensor 155 detects that the distance between it and the connecting rod 151 is the maximum setting value, the laser distance sensor 155 transmits an electrical signal to the electromagnetic sheet 186 and the electromagnetic ring 138, so that the electromagnetic ring 138 and the electromagnetic ring 138 are energized, so that the No. 1 spray plate 2 and the No. 2 spray plate 3 can stop spraying the release agent in time to reduce the waste of the release agent; when the hydraulic push rod 111 is fully retracted, the electromagnetic sheet 186 and the electromagnetic ring 138 are powered off; similarly, when the No. 1 spray plate 2 and the No. 2 spray plate 3 rise to the maximum height, the connecting rod 151 contacts the laser distance sensor 155. At this time, the connecting rod 151 and the laser distance sensor 155 are in contact. The distance between the sensors 155 is the minimum setting value. At this time, the laser distance sensor 155 transmits an electrical signal to the electromagnetic sheet 186 and the electromagnetic ring 138, so that the electromagnetic ring 138 and the electromagnetic ring 138 are energized, so that the No. 1 spray plate 2 and the No. 2 spray plate 3 stop rising, and the connecting rod 151 is prevented from squeezing the laser distance sensor 155, thereby increasing the service life of the laser distance sensor 155. After the cooled product is taken out, the electromagnetic sheet 186 and the electromagnetic ring 138 are controlled to be de-energized; and the convex strip 19 is provided to increase the direct friction between the driving wheel 17 and the machine body 1; by adding the convex strip 19 on the surface of the driving wheel 17, the friction coefficient between the driving wheel 17 and the machine body 1 is increased, and the convex strip 19 The strip 19 is made of silicone rubber material, so that when the driving wheel 17 rolls on the body 1, the convex strip 19 located between the driving wheel 17 and the body 1 will be elastically deformed by being squeezed, so that the contact area between the convex strip 19 and the body 1 is increased. In addition, the deformed convex strip 19 will generate an extrusion force on the body 1 under the action of its own elastic restoring force, so that the friction between the body 1 and the convex strip 19 is increased, thereby improving the rolling effect between the driving wheel 17 and the body 1, and strengthening the effect of the driving wheel 17 driving the bevel gear shaft 135 and the screw 153 to rotate through the bevel gear ring 136, thereby ensuring that the No. 1 spray plate 2 can stably slide along the slide groove 15, thereby further improving the practical application effect of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic fittings forming die for a metering box, comprising: A machine body (1), wherein a case (11) is fixedly mounted on the upper end of the machine body (1); an injection molding machine (12) is fixedly mounted on the upper end of the case (11); the injection molding machine (12) is fixedly mounted on the upper end of the machine body (1); a movable mold (13) and a fixed mold (14) are arranged in the case (11); the fixed mold (14) is fixedly mounted on the upper end of the machine body (1); an injection molding port connected to the injection molding machine (12) is provided on a side of the fixed mold (14) away from the movable mold (13); The movable mold (13) is fixedly connected to the inner wall of the chassis (11) through a hydraulic push rod (111); a demoulding rod (131) is provided on a side of the movable mold (13) close to the hydraulic push rod (111); the demoulding rod (131) is slidably and hermetically connected to the movable mold (13); a connecting plate (132) is fixedly connected to the side of the demoulding rod (131) away from the machine body (1); the connecting plate (132) and the movable mold (13) are connected through an electro-hydraulic push rod (133); the characteristics are: A spray assembly, the spray assembly comprising a No. 1 spray plate (2) and a No. 2 spray plate (3); both sides of the movable mold (13) and the fixed mold (14) are provided with slide grooves (15); the No. 1 spray plate (2) is slidably connected to the slide grooves (15) on both sides of the movable mold (13) through a connecting rod (151); the No. 2 spray plate (3) is slidably connected to the slide grooves (15) on both sides of the fixed mold (14) through a connecting rod (151); the No. 1 spray plate (2) and the No. 2 spray plate (3) are provided with spray ports (21) on the sides away from each other; the No. 1 spray plate (2) and the No. 2 spray plate (3) are provided with liquid storage chambers (22); the liquid storage chambers (2 2) is connected to the injection port (21) through an air hole (23); an atomizing nozzle (24) is fixedly installed in the injection port (21); the atomizing nozzle (24) is connected to the air hole (23); a pressure-stabilizing valve (25) is fixedly installed in the air hole (23); a feed port (16) is provided on the side away from each other of the movable mold (13) and the fixed mold (14); an air channel (152) is provided inside the connecting rod (151); the air channel (152) and the feed port (16) are connected through a connecting unit; a driving unit is installed in the slide groove (15); the driving unit is used to drive the connecting rod (151) to slide in the slide groove (15); The driving unit comprises a driving wheel (17); a screw rod (153) is rotatably connected in the slide groove (15); the connecting rod (151) is connected to the screw rod (153) by helical transmission; the driving wheel (17) is rotatably connected to the movable mold (13); a cavity (134) is provided inside the movable mold (13); a bevel gear set is rotatably installed in the cavity (134); the bevel gear set comprises a bevel gear shaft (135) and a bevel gear ring (136) meshing with each other; the bevel gear shaft (135) is fixedly connected to the screw rod (153); the bevel gear ring (136) is connected to the driving wheel (17); The bevel gear ring (136) is slidably connected to the driving wheel (17); a connecting spring (137) is provided between the bevel gear ring (136) and the inner wall of the cavity (134); one end of the connecting spring (137) is fixedly connected to the bevel gear ring (136), and the other end is rotatably connected to the inner wall of the cavity (134); an electromagnetic ring (138) is inlaid on the inner wall of the cavity (134); the bevel gear ring (136) is made of iron material; The driving unit further comprises a screw rod (18), one end of which is rotatably connected to the fixed mold (14), and the other end of which is rotatably connected to a connecting block; the connecting block is fixedly connected to the machine body (1); a cylindrical groove (181) is provided on the side wall of the movable mold (13); the screw rod (18) is rotatably connected in the cylindrical groove (181); two mutually meshing bevel gear shafts (182) are installed inside the fixed mold (14); one of the bevel gear shafts (182) is fixedly connected to the screw rod (153); the other bevel gear shaft (182) is fixedly connected to the screw rod (18); a pushing block (183) is installed on the inner wall of the cylindrical groove (181); the pushing block (183) meshes with the screw rod (18) for transmission.

2. A plastic fitting forming die for a metering box according to claim 1, characterized in that: The inner wall of the columnar groove (181) is provided with a groove (184); the pushing block (183) is slidably connected in the groove (184); the pushing block (183) and the groove bottom of the groove (184) are fixedly connected via a fixing spring (185); and the groove bottom of the groove (184) is inlaid with an electromagnetic sheet (186).

3. A plastic fitting forming mold for a metering box according to claim 2, characterized in that: The connecting unit comprises a corrugated airbag (154); the corrugated airbag (154) is sleeved on the surface of the screw (153); one end of the corrugated airbag (154) is fixedly connected to the lower end wall of the slide groove (15), and the other end is fixedly connected to the connecting rod (151); the feed port (16) and the air channel (152) are both connected to the corrugated airbag (154).

4. A plastic fitting forming die for a metering box according to claim 3, characterized in that: The upper end wall of the slide groove (15) is inlaid with a laser distance sensor (155).

5. The plastic fitting forming mold for a metering box according to claim 4, characterized in that: A convex strip (19) is fixedly connected to the surface of the driving wheel (17); the convex strip (19) is made of silicone rubber material.

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