Plastic slide slideway hot-pressing molding process and molding equipment thereof

Abstract

The invention relates to the technical field of slide slideway preparation, in particular to a plastic slide slideway hot-pressing molding process and molding equipment thereof. Comprising a machine body, the hot pressing die comprises a female die and a male die; the faces, away from each other, of the female die and the male die are connected with the machine body through hydraulic push rods. By arranging the clamping plate, the clamping plate can clamp cylindrical plastic before the hot-pressing mold is closed, so that the clamping plate seals the blown cylindrical plastic, an operator does not need to manually seal the cylindrical plastic, the operator is prevented from being always in a high-temperature environment around the cylindrical plastic, and the working efficiency of the operator is improved. On one hand, the problem of heatstroke of operators is prevented, and the risks of skin burn or scald and other accidents are reduced; on the other hand, the harmful gas or steam released by the high-temperature plastic absorbed by the operator is reduced, the harm of the harmful gas to the operator is reduced, and the operation safety of the operator is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of slideway preparation, in particular to a hot pressing molding process for a plastic slideway and molding equipment thereof. Background Art

[0002] The hot pressing and shaping of plastics is a simple and common processing method in the plastics processing industry. The plastic is heated to a plastic state, and then placed in a mold and pressure is applied to form the desired shape and structure. The production of slides adopts a combination of hot pressing and blow molding, that is, the cylindrical plastic obtained by blow molding is placed between hot pressing molds, and appropriate pressure and temperature are applied to form it into the desired slide shape. Since the hot pressing and blow molding process combines the two technologies of blow molding and hot pressing and shaping, the hot pressing and blow molding process not only retains the advantages of the blow molding process in that it can better control the temperature and pressure of the plastic, and improve the quality and performance of the product, but also the use of hot pressing molds can further process and shape the blow-molded cylindrical plastic, thereby reducing product defects, improving the strength, wear resistance and weather resistance of the product, and making the shape of the final product more in line with the design requirements.

[0003] However, when the blow-molded cylindrical plastic is conveyed to the hot pressing mold, the lower end of the cylindrical plastic needs to be manually sealed. This is because during the blow-molding process, the plastic is heated and softened and blown out of the cylindrical shape by high-pressure air. In addition, in order to allow the high-pressure air to smoothly enter the mold and extrude the plastic, the lower end of the plastic is open to facilitate air circulation. However, when it reaches the hot pressing mold, the lower end of the blow-molded cylindrical plastic needs to be manually sealed. The reason is that by manually sealing the bottom of the cylindrical plastic, gas leakage in the cylindrical plastic can be avoided, which is conducive to the cylindrical plastic forming a more stable shape during the hot pressing process.

[0004] However, when the operator seals the cylindrical plastic, the high temperature of the extruded cylindrical plastic will cause the temperature of the operating environment to rise, making the working environment unsuitable and aggravating the fatigue of the operator. Especially in summer, the high temperature of the working environment will cause the operator to lose concentration and even suffer from heat stroke, which will increase the risk of skin burns or scalds and other accidents. In addition, the high-temperature plastic will release harmful gases or steam. The operator will have difficulty breathing if exposed to such an environment for a long time, which will affect the health of the operator.

[0005] In view of this, in order to overcome the above technical problems, the present invention proposes a plastic slide track hot pressing molding process and molding equipment thereof, which solves the above technical problems. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, the present invention proposes a hot pressing molding process for a plastic slide and a molding device thereof. The present invention arranges a clamping plate so that the clamping plate can clamp the cylindrical plastic before the hot pressing mold is closed, so that the clamping plate can seal the blown cylindrical plastic, thereby eliminating the need for the operator to manually seal the cylindrical plastic, thereby avoiding the operator from being in a high temperature environment around the cylindrical plastic. On the one hand, it prevents the operator from suffering from heat stroke and reduces the risk of skin burns or scalds and other accidents. On the other hand, it reduces the operator's absorption of harmful gases or steam released by high-temperature plastics, reduces the harm of harmful gases to the operator, and thereby improves the operator's operating safety.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a hot pressing and shaping device for a plastic slideway of the present invention comprises:

[0008] A machine body, wherein a hot pressing mold is slidably connected to the upper end of the machine body; the hot pressing mold comprises a concave mold and a convex mold; the concave mold and the convex mold are connected to the machine body via a hydraulic push rod on one side thereof which are away from each other; a mounting frame is fixedly installed on the upper end of the machine body; a blow molding head is arranged above the hot pressing mold; the blow molding head is fixedly connected to the mounting frame; an injection molding machine is fixedly installed on the upper end of the mounting frame; the injection molding machine is used to inject the raw material into the blow molding head;

[0009] A clamping plate, the clamping plate is located between the blow molding head and the hot pressing mold; the number of the clamping plates is two; the two clamping plates are fixedly installed on the upper ends of the concave mold and the punch through telescopic rods respectively; the telescopic rod includes a fixing rod and a connecting rod; the fixing rod is fixedly connected to the hot pressing mold; a circular groove is provided at one end of the fixing rod away from the hot pressing mold; the connecting rod is slidably sealed and connected in the circular groove; the connecting rod is fixedly connected to the bottom of the circular groove through a connecting spring; the clamping plate is fixedly connected to one end of the connecting rod away from the fixing rod.

[0010] Preferably, an exhaust groove is provided on the lower end surface of the clamping plate; an exhaust rod is slidingly and sealably connected in the exhaust groove; an L-shaped groove is provided inside the exhaust rod; an air duct is provided inside the clamping plate; one end of the air duct passes through the connecting rod and is connected to the circular groove, and the other end is connected to the exhaust groove; an exhaust pipe is fixedly installed on the side wall of the clamping plate; the exhaust pipe is connected to the exhaust groove.

[0011] Preferably, an electromagnetic sheet is embedded in the bottom of the circular groove; a convex strip is installed on the mutually adjacent sides of the two clamping plates; and the convex strip is made of fluororubber material.

[0012] Preferably, a groove is provided on one side of the clamping plate away from the connecting rod; the convex strip is slidably and sealingly connected in the groove; and the convex strip is connected to the bottom of the groove via a push spring.

[0013] Preferably, a storage cavity connected to the exhaust groove is provided inside the clamping plate; a baffle is slidably and sealably connected inside the storage cavity; the baffle is fixedly connected to one end of the storage cavity away from the exhaust groove by a return spring; and the end of the baffle away from the exhaust groove is fixedly connected to the convex strip by a steel wire rope.

[0014] Preferably, a vent hole is provided on the surface of the fixing rod; a one-way valve is fixedly installed inside the vent hole.

[0015] Preferably, a pressure-stabilizing groove connected to the L-shaped groove is provided at the bottom of the fixing rod; a sealing plug is slidingly and sealingly connected in the pressure-stabilizing groove; and the sealing plug is connected to the groove wall of the pressure-stabilizing groove via a tower-shaped spring.

[0016] A plastic slide hot pressing shaping process, which is applicable to the above-mentioned plastic slide hot pressing shaping equipment, and the steps of the process are as follows:

[0017] S1: First, the raw materials of the plastic slide, such as PVC plastic particles, are added into the injection molding machine, so that the injection molding machine can heat and melt the raw materials and inject them into the blow molding head. At this time, the blow molding head blows the hot melt raw materials into a cylindrical shape, so that the lower end of the cylindrical plastic falls under the action of gravity;

[0018] S2: When the lower end of the cylindrical plastic falls to the clamping plate, the hydraulic push rod is controlled to push the concave mold and the convex mold closer to each other, so that the clamping plate clamps the lower end of the cylindrical plastic, thereby squeezing and sealing the lower end of the cylindrical plastic; then the concave mold and the convex mold are controlled to move away from each other, and at this time, as the blow molding head continuously blows the cylindrical plastic, the blown cylindrical plastic continues to fall;

[0019] S3: When the lower end of the sealed cylindrical plastic falls below the hot pressing mold, the blow molding head is controlled to stop. At this time, the hydraulic push rod pushes the female mold and the male mold to close the mold, so that the female mold and the male mold hot press the cylindrical plastic into a slide shape. Then the cooling system is operated to cool and harden the plastic slide in the hot pressing mold. Finally, the hot pressing mold is controlled to open and the manufactured slide is taken out.

[0020] S4: After the slide is taken out, the excess plastic is cut off by cutting equipment, and the edges are trimmed to obtain the finished slide. Finally, the quality of the finished slide is inspected. After the quality inspection is completed, the slide product is obtained.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The present invention provides a clamping plate so that the clamping plate can clamp the cylindrical plastic before the hot pressing mold is closed, so that the clamping plate can seal the blown cylindrical plastic, thereby eliminating the need for operators to manually seal the cylindrical plastic, avoiding operators from being in a high-temperature environment around the cylindrical plastic. On the one hand, it prevents operators from suffering from heat stroke and reduces the risk of skin burns or scalds and other accidents; on the other hand, it reduces the absorption of harmful gases or steam released by high-temperature plastic by operators, reduces the harm of harmful gases to operators, and thus improves the operating safety of operators.

[0023] 2. The present invention arranges the exhaust rod so that the exhaust rod can transport the high-temperature harmful gas to the gas collection equipment for collection and treatment. On the one hand, it can prevent the high-temperature harmful gas from diffusing into the surrounding air due to the rupture of the cylindrical plastic, thereby reducing the harm of harmful gas to the operator and improving the operating safety of the operator; on the other hand, reducing the emission of harmful gas into the atmosphere can reduce the impact on the environment, protect the stability of the natural environment and the ecosystem, and at the same time, respond to the national environmental protection policy; in addition, because the exhaust rod punctures the cylindrical plastic, the connection strength of the punctured part of the cylindrical plastic is reduced, and then after the hot pressing is completed, the operator can easily use the tool to tear open the punctured part of the cylindrical plastic, thereby reducing the difficulty of removing the slide after hot pressing, improving the operating efficiency of the operator, and further improving the hot pressing production efficiency of the slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Figure 1 is a stereogram of the present invention;

[0026] Figure 2 It is a transmission stereogram of the male die and the female die used in the present invention;

[0027] Figure 3 is a three-dimensional diagram of a clamping plate used in the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the clamping plate used in the present invention;

[0029] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0030] Figure 6 It is a process flow chart of the present invention;

[0031] In the figure: 1, machine body; 11, concave die; 12, convex die; 13, hydraulic push rod; 14, mounting frame; 15, blow molding head; 16, injection molding machine; 2, clamping plate; 21, telescopic rod; 211, fixing rod; 212, connecting rod; 213, circular groove; 214, connecting spring; 215, electromagnetic sheet; 216, vent; 217, one-way valve; 22, exhaust groove; 221, exhaust rod; 222, L-shaped groove; 23, airway; 24, exhaust pipe; 25, groove; 251, convex strip; 252, push spring; 26, storage chamber; 261, baffle; 262, reset spring; 263, wire rope; 27, pressure stabilizing groove; 271, sealing plug; 272, tower spring. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figures 1 to 6 As shown, the hot pressing and shaping equipment for a plastic slide described in the present invention comprises:

[0034] A machine body 1, wherein a hot pressing mold is slidably connected to the upper end of the machine body 1; the hot pressing mold comprises a concave mold 11 and a convex mold 12; the concave mold 11 and the convex mold 12 are connected to the machine body 1 via a hydraulic push rod 13 on the sides away from each other; a mounting frame 14 is fixedly installed on the upper end of the machine body 1; a blow molding head 15 is arranged above the hot pressing mold; the blow molding head 15 is fixedly connected to the mounting frame 14; an injection molding machine 16 is fixedly installed on the upper end of the mounting frame 14; the injection molding machine 16 is used to inject raw materials into the blow molding head 15;

[0035] A clamping plate 2, wherein the clamping plate 2 is located between the blow molding head 15 and the hot pressing mold; the number of the clamping plates 2 is two; the two clamping plates 2 are fixedly mounted on the upper ends of the concave mold 11 and the convex mold 12 respectively through telescopic rods 21; the telescopic rod 21 includes a fixing rod 211 and a connecting rod 212; the fixing rod 211 is fixedly connected to the hot pressing mold; a circular groove 213 is provided at one end of the fixing rod 211 away from the hot pressing mold; the connecting rod 212 is slidably and sealingly connected in the circular groove 213; the connecting rod 212 is fixedly connected to the bottom of the circular groove 213 through a connecting spring 214; the clamping plate 2 is fixedly connected to one end of the connecting rod 212 away from the fixing rod 211.

[0036] As an embodiment of the present invention, an exhaust groove 22 is provided on the lower end surface of the clamping plate 2; an exhaust rod 221 is slidingly and sealably connected inside the exhaust groove 22; an L-shaped groove 222 is provided inside the exhaust rod 221; an air duct 23 is provided inside the clamping plate 2; one end of the air duct 23 passes through the connecting rod 212 and is connected to the circular groove 213, and the other end is connected to the exhaust groove 22; an exhaust pipe 24 is fixedly installed on the side wall of the clamping plate 2; the exhaust pipe 24 is connected to the exhaust groove 22.

[0037] As an embodiment of the present invention, an electromagnetic sheet 215 is embedded in the bottom of the circular groove 213; a convex strip 251 is installed on the mutually adjacent sides of the two clamping plates 2; and the convex strip 251 is made of fluororubber material.

[0038] As an embodiment of the present invention, a groove 25 is formed on one side of the clamping plate 2 away from the connecting rod 212 ; the convex strip 251 is slidably sealed and connected in the groove 25 ; the convex strip 251 is connected to the bottom of the groove 25 via a push spring 252 .

[0039] As an embodiment of the present invention, a storage cavity 26 communicating with the exhaust groove 22 is provided inside the clamping plate 2; a baffle 261 is slidably sealed in the storage cavity 26; the baffle 261 is fixedly connected to one end of the storage cavity 26 away from the exhaust groove 22 by a return spring 262; and one end of the baffle 261 away from the exhaust groove 22 is fixedly connected to the convex strip 251 by a wire rope 263;

[0040] During work, when the operator seals the cylindrical plastic, the high temperature of the extruded cylindrical plastic will cause the temperature of the operating environment to rise, making the working environment unsuitable and aggravating the fatigue of the operator; especially in summer, the high temperature of the working environment will cause the operator to lose concentration and even suffer from heat stroke, thereby increasing the risk of skin burns or scalds and other accidents. In addition, the high-temperature plastic will release harmful gases or steam. The operator will have difficulty breathing if exposed to such an environment for a long time, which will affect the health of the operator;

[0041] In this regard, the present invention provides a clamping plate 2 so that the clamping plate 2 can clamp the cylindrical plastic before the hot pressing mold is closed, so that the clamping plate 2 can seal the blown cylindrical plastic, thereby eliminating the need for the operator to manually seal the cylindrical plastic, and avoiding the operator from being in a high-temperature environment around the cylindrical plastic. On the one hand, it prevents the operator from suffering from heat stroke, reduces the risk of skin burns or scalds and other accidents; on the other hand, it reduces the absorption of harmful gases or steam released by the high-temperature plastic by the operator, reduces the harm of harmful gases to the operator, and thus improves the operating safety of the operator.

[0042] There is also an automated extrusion module in the prior art, which is used to extrude the lower end of the tubular plastic and seal it; the existing automated extrusion module is two extrusion plates installed under the hot pressing mold, so that the lower end of the tubular plastic passes between the concave mold 11 and the convex mold 12, and when it falls between the two extrusion plates, the two extrusion plates are pushed to extrude and seal the descending tubular plastic, but when the extrusion plates seal the tubular plastic, the tubular plastic needs to be fully accumulated between the two extrusion plates. If the accumulation of the tubular plastic is insufficient, the extrusion plates cannot effectively seal the lower end of the tubular plastic, resulting in incomplete molding of the tubular plastic during the hot pressing process, affecting the quality of the product, and the increase in the accumulation will lead to waste of tubular plastic, thereby increasing production costs; in addition, the tubular plastic will gradually harden due to cooling during the falling process, resulting in difficulty in effectively sealing the extruded tubular plastic, affecting the sealing effect of the lower end of the tubular plastic, thereby reducing the hot pressing molding quality of the tubular plastic;

[0043] During use, the user controls the external conveying equipment to convey the plastic raw material to the injection molding machine 16, so that the injection molding machine 16 can heat and melt the raw material and inject it into the blow molding head 15, so that the blow molding head 15 blows out the cylindrical plastic, so that the lower end of the cylindrical plastic falls between the two clamping plates 2 under the action of gravity. At this time, the hydraulic push rod 13 is controlled to push the female mold 11 and the male mold 12 to move in a direction close to each other, so that the male mold 12 and the female mold 11 drive the two clamping plates 2 to move in a direction close to each other through the telescopic rod 21, so that the two clamping plates 2 can contact with the cylindrical plastic and push the lower end of the cylindrical plastic, so that the lower end of the cylindrical plastic is squeezed and sealed; then the hydraulic push rod 13 is controlled to push the female mold 11 and the male mold 12 to move in a direction close to each other, so that the male mold 12 and the female mold 11 drive the two clamping plates 2 to move in a direction close to each other through the telescopic rod 21, so that the two clamping plates 2 can contact with the cylindrical plastic and push the lower end of the cylindrical plastic, so that the lower end of the cylindrical plastic is squeezed and sealed; The hydraulic push rod 13 pulls the female mold 11 and the male mold 12 to reset, and at this time, the blow molding head 15 is controlled to continue to blow out the cylindrical plastic, so that the cylindrical plastic drives the lower extrusion part to continue to fall, so that the cylindrical plastic passes through between the female mold 11 and the male mold 12, until the sealed lower end of the cylindrical plastic passes over the lower end of the hot pressing mold. At this time, the blow molding head 15 is controlled to stop blowing, and at the same time, the hydraulic push rod 13 is controlled to push the female mold 11 and the male mold 12 closer to each other, so that the female mold 11 and the male mold 12 drive the two clamping plates 2 to extrude and seal the cylindrical plastic between the hot pressing mold and the blow molding head 15 through the telescopic rod 21; when the two clamping plates 2 contact each other and extrude and seal the cylindrical plastic After that, the hydraulic push rod 13 pushes the female mold 11 and the male mold 12 to approach each other, so that the connecting rod 212 fixedly connected to the clamping plate 2 squeezes the connecting spring 214 into the circular groove 213 under the action of the blocking force of the clamping plate 2, until the female mold 11 and the male mold 12 contact each other. At this time, the female mold 11 and the male mold 12 squeeze the cylindrical plastic sealed between them, so that the hot pressing mold applies appropriate pressure and temperature to the cylindrical plastic obtained by blow molding, so that it forms the desired slide shape; since the female mold 11 and the male mold 12 are provided with cooling cavities inside, the cooling cavities are connected to the external water source through the cooling pipe at the lower end, so that after hot pressing, the external water source transports cooling water to the cooling cavities. The cooling cavity cools the slide-shaped plastic between the female mold 11 and the male mold 12, so that the slide-shaped plastic is quickly cooled and hardened; then the hydraulic pressure is controlled to push and pull the female mold 11 and the male mold 12 away from each other, and finally the operator removes the cooled and hardened plastic slide between the female mold 11 and the male mold 12; and the convex strips 251 on the side where the two clamping plates 2 are close to each other are staggered, so that the clamping plates 2 clamp the cylindrical plastic through the staggered convex strips 251, so that the staggered convex strips 251 can mechanically lock the clamped cylindrical plastic in the process of approaching each other, thereby improving the sealing stability of the cylindrical plastic;The convex strip 251 is made of fluororubber material, so that the convex strip 251 made of fluororubber material has excellent high temperature resistance, excellent chemical corrosion resistance and low surface adhesion, which not only prevents the convex strip 251 from being melted by the high-temperature cylindrical plastic, improves the service life of the convex strip 251, and ensures the normal use of the convex strip 251, but also the low surface adhesion prevents the high-temperature and highly adhesive cylindrical plastic from adhering to the surface of the convex strip 251, so as to avoid the cylindrical plastic being torn by the cylindrical plastic adhering to its surface when the convex strip 251 is separated, thereby ensuring that the convex strip 251 can effectively seal the cylindrical plastic;

[0044] When the female mold 11 and the male mold 12 squeeze and seal the cylindrical plastic, the high-temperature gas in the cylindrical plastic will increase its gas pressure due to the squeezing. Since the clamping plate 2 squeezes and seals the cylindrical plastic between the hot pressing mold and the blow molding head 15, the high-temperature gas in the cylindrical plastic squeezed between the female mold 11 and the male mold 12 cannot be effectively discharged. In order to prevent the high-temperature gas in the cylindrical plastic squeezed between the female mold 11 and the male mold 12 from breaking the cylindrical plastic, the present invention is provided with an exhaust pipe 24, so that when the clamping plate 2 clamps the cylindrical plastic, the convex strip 251 can increase the squeezing force on the cylindrical plastic under the obstruction of the clamping plate 2, so as to enhance the sealing effect of the cylindrical plastic, and the blocked convex strip 251 will squeeze the push spring 252 into the groove 25, so that the spring 252 entering the groove 25 can be pushed into the groove 25. The convex strip 251 of the groove 25 can pull the baffle 261 through the steel wire rope 263 to squeeze the return spring 262 into the storage chamber 26 above, so that the airway 23 blocked by the baffle 261 is opened, and as the concave mold 11 and the convex mold 12 approach each other, the concave mold 11 and the convex mold 12 can push the fixing rod 211 and the connecting rod 212 to approach each other, so that the connecting rod 212 pushes the gas in the circular groove 213 to enter the exhaust groove 22 through the airway 23, so that the exhaust rod 221 in the exhaust groove 22 is pushed by the gas entering the exhaust groove 22 and extends out of the exhaust groove 22, so that the exhaust rod 221 extending out of the exhaust groove 22 contacts the cylindrical plastic; because the end of the exhaust pipe 24 away from the exhaust groove 22 is set as a tapered end, and the exhaust rod 221 is located at the convex strip 251 The cylindrical plastic contacted by the exhaust rod 221 is not in a sealed state of contact with each other under the push of the convex strip 251, and the cylindrical plastic located below the hot pressing mold and the blow molding head 15 is at a higher temperature, so it is relatively soft. When the gas pushes the exhaust rod 221 in contact with the cylindrical plastic to continue to extend, the tapered end of the exhaust rod 221 will be inserted into the inside of the cylindrical plastic, so that when the concave mold 11 and the convex mold 12 squeeze the cylindrical plastic, the high-temperature gas inside the squeezed cylindrical plastic will enter the exhaust groove 22 through the L-shaped groove 222 on the surface of the exhaust rod 221, so that the gas entering the exhaust groove 22 is discharged through the exhaust pipe 24. Since the exhaust pipe 24 is connected to the external gas collection device, the high-temperature harmful gas discharged from the exhaust pipe 24 can be transported to the gas collection device. The equipment is collected and processed, which can prevent the high-temperature harmful gas from diffusing into the surrounding air due to the rupture of the cylindrical plastic, thereby reducing the harm of the harmful gas to the operator and improving the safety of the operator's operation; on the other hand, reducing the emission of harmful gases into the atmosphere can reduce the impact on the environment, protect the stability of the natural environment and the ecosystem, and at the same time, respond to the national environmental protection policy; in addition, since the exhaust rod 221 punctures the cylindrical plastic, the connection strength of the punctured part of the cylindrical plastic is reduced, and then after the hot pressing is completed, the operator can easily use the tool to tear open the punctured part of the cylindrical plastic, thereby reducing the difficulty of removing the slide after hot pressing, improving the operating efficiency of the operator, and further improving the hot pressing production efficiency of the slide;

[0045] When the blow molding head 15 blows a large cylindrical plastic, the diameter of the cylindrical plastic located between the hot pressing molds is relatively large, so it is ensured that the cylindrical plastic with a larger diameter can fall between the concave mold 11 and the convex mold 12 of the hot pressing mold to avoid the clamping plate 2 blocking the cylindrical plastic from falling. The present invention sets an electromagnetic sheet 215. During the falling process of the cylindrical plastic, the electromagnetic sheet 215 is controlled to be energized so that the electromagnetic sheet 215 can generate a magnetic force to attract the connecting rod 212 to squeeze the connecting spring 214 into the circular groove 213, so that the gas in the circular groove 213 is squeezed and compressed. At this time, the clamping plate 2 is on the connecting rod 212. When pulled, they are in a state of being away from each other; when the cylindrical plastic falls between the two clamping plates 2, the hydraulic push rod 13 is first controlled to push the die 11 and the punch 12 closer to each other, and then the electromagnetic sheet 215 is controlled to be de-energized, so that the connecting rod 212 extends out of the circular groove 213 under the combined action of the restoring force of the connecting spring 214 and the gas pressure, so that the clamping plates 2 are pushed by the connecting rod 212 to approach each other and squeeze the cylindrical plastic for sealing; then the electromagnetic sheet 215 is energized to again adsorb the clamping plates 2 away from each other to ensure that the sealed cylindrical plastic can effectively fall between the die 11 and the punch 12.

[0046] As an embodiment of the present invention, a vent hole 216 is formed on the surface of the fixing rod 211 ; a one-way valve 217 is fixedly installed inside the vent hole 216 .

[0047] As an embodiment of the present invention, a pressure stabilizing groove 27 connected to the L-shaped groove 222 is provided at the bottom of the fixing rod 211; a sealing plug 271 is slidably and sealably connected in the pressure stabilizing groove 27; the sealing plug 271 is connected to the groove wall of the pressure stabilizing groove 27 via a tower spring 272;

[0048] During operation, if the harmful gas in the cylindrical plastic is discharged from the exhaust rod 221 before the female mold 11 and the male mold 12 are closed, the cylindrical plastic between the female mold 11 and the male mold 12 cannot be supported by sufficient air pressure, and it is difficult to effectively fit with the female mold 11 and the male mold 12, which will cause gaps, bubbles or defects on the surface of the molded product, reducing the appearance quality and surface smoothness of the product; in this regard, the present invention provides a pressure stabilizing groove 27, when the baffle 261 is opened, the connecting rod 212 is squeezed and enters the circular groove 213, so that the gas in the circular groove 213 can continuously enter the exhaust groove 22 and The high-temperature hot air in the cylindrical plastic flows into the exhaust pipe 24 from the L-shaped groove 222 of the exhaust rod 221 due to the extrusion of the punch 12 and the die 11. At this time, the sealing plug 271 in the pressure stabilizing groove 27 connected to the L-shaped groove 222 will be pushed down by the high-temperature gas to effectively seal the pressure stabilizing groove 27; and as the gas in the circular groove 213 continues to enter between the exhaust groove 22 and the exhaust rod 221; the air pressure difference on both sides of the sealing plug 271 is continuously reduced. When too much high-temperature hot air in the cylindrical plastic is discharged, the air pressure on the side of the sealing plug 271 close to the cylindrical plastic is reduced. , and the air pressure between the exhaust groove 22 and the exhaust rod 221 increases with the convergence of the air flow, so that the sealing plug 271 will stretch the tower spring 272 under the push of the air pressure difference to extend out of the pressure stabilizing groove 27 and completely enter the L-shaped groove 222, so that the pressure stabilizing groove 27 is opened, and the gas entering between the exhaust groove 22 and the exhaust rod 221 will enter the exhaust rod 221 through the L-shaped groove 222, so that part of the air flow can be discharged through the exhaust groove 22 and the exhaust pipe 24, and the other part of the gas will directly enter the cylindrical plastic, thereby filling the inside of the cylindrical plastic with air to ensure that the concave mold 11 and the convex mold 12 When the mold is closed, the cylindrical plastic can fit with the inner wall of the mold cavity after the mold is closed, thereby ensuring that there will be no gaps, bubbles or defects on the surface of the slide product after hot pressing, thereby improving the appearance quality and surface smoothness of the slide product. The air vent 216 is opened on the surface of the fixed rod 211 so that when the female mold 11 and the male mold 12 drive the clamping plate 2 to separate, the telescopic rod 21 is restored, so that the outside air can enter the fixed rod 211 through the one-way valve 217 of the air vent 216, and then replenish the air in the circular groove 213, so as to facilitate the next time The cylindrical plastic is filled with air.

[0049] A plastic slide hot pressing shaping process, which is applicable to the above-mentioned plastic slide hot pressing shaping equipment, and the steps of the process are as follows:

[0050] S1: First, the raw materials of the plastic slide, such as PVC plastic particles, are added into the injection molding machine 16, so that the injection molding machine 16 can heat and melt the raw materials and inject them into the blow molding head 15. At this time, the blow molding head 15 blows the hot melt raw materials into a cylindrical shape, so that the lower end of the cylindrical plastic falls under the action of gravity;

[0051] S2: When the lower end of the cylindrical plastic falls to the clamping plate 2, the hydraulic push rod 13 is controlled to push the female mold 11 and the male mold 12 to approach each other, so that the clamping plate 2 clamps the lower end of the cylindrical plastic, thereby squeezing and sealing the lower end of the cylindrical plastic; then the female mold 11 and the male mold 12 are controlled to move away from each other, and at this time, as the blow molding head 15 continuously blows the cylindrical plastic, the blown cylindrical plastic continues to fall;

[0052] S3: When the lower end of the sealed cylindrical plastic falls below the hot pressing mold, the blow molding head 15 is controlled to stop, and the hydraulic push rod 13 pushes the female mold 11 and the male mold 12 to close the mold, so that the female mold 11 and the male mold 12 hot press the cylindrical plastic into a slide shape, and then the cooling system is operated to cool and harden the plastic slide in the hot pressing mold, and finally the hot pressing mold is controlled to open, and the manufactured slide is taken out;

[0053] S4: After the slide is taken out, the excess plastic is cut off by cutting equipment, and the edges are trimmed to obtain the finished slide. Finally, the quality of the finished slide is inspected. After the quality inspection is completed, the slide product is obtained.

[0054] 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.

[0055] 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 hot pressing and shaping equipment for a plastic slide, characterized in that: include: A machine body (1), wherein a hot pressing mold is slidably connected to the upper end of the machine body (1); the hot pressing mold comprises a concave mold (11) and a convex mold (12); the sides of the concave mold (11) and the convex mold (12) that are away from each other are connected to the machine body (1) via a hydraulic push rod (13); a mounting frame (14) is fixedly mounted on the upper end of the machine body (1); a blow molding head (15) is arranged above the hot pressing mold; the blow molding head (15) is fixedly connected to the mounting frame (14); an injection molding machine (16) is fixedly mounted on the upper end of the mounting frame (14); the injection molding machine (16) is used to inject raw materials into the blow molding head (15); A clamping plate (2), the clamping plate (2) being located between the blow molding head (15) and the hot pressing mold; the number of the clamping plates (2) is two; the two clamping plates (2) are fixedly mounted on the upper ends of the concave mold (11) and the convex mold (12) respectively through telescopic rods (21); the telescopic rods (21) comprise a fixing rod (211) and a connecting rod (212); the fixing rod (211) is fixedly connected to the hot pressing mold; a circular groove (213) is formed at one end of the fixing rod (211) away from the hot pressing mold; the connecting rod (212) is slidably sealed and connected in the circular groove (213); the connecting rod (212) is fixedly connected to the bottom of the circular groove (213) through a connecting spring (214); the clamping plate (2) is fixedly connected to one end of the connecting rod (212) away from the fixing rod (211).

2. The hot pressing and shaping equipment for a plastic slide according to claim 1, characterized in that: The lower end surface of the clamping plate (2) is provided with an exhaust groove (22); an exhaust rod (221) is slidably sealed in the exhaust groove (22); an L-shaped groove (222) is provided inside the exhaust rod (221); an air passage (23) is provided inside the clamping plate (2); one end of the air passage (23) passes through the connecting rod (212) and is connected to the circular groove (213), and the other end is connected to the exhaust groove (22); an exhaust pipe (24) is fixedly mounted on the side wall of the clamping plate (2); the exhaust pipe (24) is connected to the exhaust groove (22).

3. The hot pressing and shaping equipment for a plastic slide according to claim 2, characterized in that: An electromagnetic sheet (215) is inlaid at the bottom of the circular groove (213); a convex strip (251) is installed on the mutually adjacent sides of the two clamping plates (2); and the convex strip (251) is made of fluororubber material.

4. The hot pressing and shaping equipment for a plastic slide according to claim 3, characterized in that: A groove (25) is provided on one side of the clamping plate (2) away from the connecting rod (212); the convex strip (251) is slidably sealed and connected in the groove (25); the convex strip (251) is connected to the bottom of the groove (25) via a push spring (252).

5. The hot pressing and shaping equipment for plastic slides according to claim 4, characterized in that: The clamping plate (2) is provided with a storage cavity (26) in communication with the exhaust groove (22); a baffle (261) is slidably sealed in the storage cavity (26); the baffle (261) is fixedly connected to one end of the storage cavity (26) away from the exhaust groove (22) via a return spring (262); and the end of the baffle (261) away from the exhaust groove (22) is fixedly connected to the convex strip (251) via a steel wire rope (263).

6. The hot pressing and shaping equipment for plastic slides according to claim 5, characterized in that: A vent hole (216) is provided on the surface of the fixing rod (211); a one-way valve (217) is fixedly installed inside the vent hole (216).

7. The hot pressing and shaping equipment for a plastic slide according to claim 6, characterized in that: A pressure stabilizing groove (27) communicating with the L-shaped groove (222) is provided at the bottom of the fixing rod (211); a sealing plug (271) is slidably and sealably connected inside the pressure stabilizing groove (27); and the sealing plug (271) is connected to the groove wall of the pressure stabilizing groove (27) via a tower-shaped spring (272).

8. A hot pressing and shaping process for a plastic slide, which is applicable to the hot pressing and shaping equipment for a plastic slide as claimed in any one of claims 1 to 7, and is characterized in that: The steps of the process are as follows: S1: First, raw materials for the plastic slide, such as PVC plastic particles, are added into an injection molding machine (16), so that the injection molding machine (16) can heat and melt the raw materials and inject them into a blow molding head (15). At this time, the blow molding head (15) blows the hot melt raw materials into a cylindrical shape, so that the lower end of the cylindrical plastic falls under the action of gravity; S2: When the lower end of the cylindrical plastic falls to the clamping plate (2), the hydraulic push rod (13) is controlled to push the female mold (11) and the male mold (12) closer to each other, so that the clamping plate (2) clamps the lower end of the cylindrical plastic, thereby squeezing and sealing the lower end of the cylindrical plastic; then the female mold (11) and the male mold (12) are controlled to move away from each other, and at this time, as the blow molding head (15) continuously blows the cylindrical plastic, the blown cylindrical plastic continues to fall; S3: When the lower end of the sealed cylindrical plastic falls below the hot pressing mold, the blow molding head (15) is controlled to stop, and at this time the hydraulic push rod (13) pushes the female mold (11) and the male mold (12) to close the mold, so that the female mold (11) and the male mold (12) hot press the cylindrical plastic into a slide shape, and then the cooling system is operated to cool and harden the plastic slide in the hot pressing mold, and finally the hot pressing mold is controlled to open and the manufactured slide is taken out; S4: After the slide is taken out, the excess plastic is cut off by cutting equipment, and the edges are trimmed to obtain the finished slide. Finally, the quality of the finished slide is inspected. After the quality inspection is completed, the slide product is obtained.

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