A thermoplastic forming machine

Abstract

The invention discloses a thermoplastic forming machine, belonging to the field of thermoplastic forming machines. A thermoplastic forming machine comprises a thermoplastic platform and a water storage tank, wherein a thermoplastic mold is fixedly connected to the top of the thermoplastic platform, a plastic suction mold groove is provided in the middle of the thermoplastic mold, a cooling groove is provided inside the thermoplastic mold, a water pump is fixedly connected to the side wall of the thermoplastic platform, the output end of the water pump is communicated with the inner cavity of the cooling groove, and the input end of the water pump is communicated with the inner cavity of the water storage tank; the invention transmits the water flow in the water storage tank to the cooling groove, thereby quickly cooling the product after the shaping is completed, effectively improving the cooling efficiency, and part of the water flow will be vaporized and evaporated, thereby pushing the cutting blade to move downward, realizing the cutting of the edge surplus of the thermoplastic product, simplifying the construction steps, and improving the processing efficiency, and the water flow filled in the cooling groove will flow back to the water storage tank along the return pipe, realizing water circulation cooling, and improving the cooling effect.

Description

Technical Field

[0001] The invention relates to the technical field of thermoplastic forming machines, in particular to a thermoplastic forming machine. Background Art

[0002] Plastic molding is a method of making a product by clamping a thermoplastic plastic sheet in a frame, heating it to a softening temperature, and then pressing the heated and softened sheet against the contour of the mold and cooling it under the action of an external force (such as mechanical methods such as tools, plungers, solid molds, or pneumatic methods such as vacuum or compressed air to generate air pressure differences).

[0003] The patent with the publication number of "CN117464966A" is named as a thermoplastic molding machine, including: the lower mold mechanism includes a lower mold assembly; the upper mold mechanism is arranged correspondingly to the upper mold mechanism, including a push assembly and an upper mold assembly, the push assembly is connected to the upper mold assembly, the upper mold assembly matches the lower mold assembly in appearance, and the upper mold assembly can be buckled on the lower mold assembly; the heating mechanism includes a heating assembly, a lifting assembly and a moving assembly, the lifting assembly is connected to the moving assembly, the heating assembly is connected to the lifting assembly, and the heating assembly is in contact with the upper mold assembly. The upper mold assembly can be close to or away from the lower mold assembly, the heating assembly can be moved to the top of the lower mold assembly and fit with the lower mold assembly, the heating assembly heats the lower mold assembly, the plastic raw material is added to the lower mold assembly, the upper mold assembly is buckled with the lower mold assembly, the pushing assembly applies pressure to the upper mold assembly and maintains it for a certain period of time, so that the heated and bent plastic raw material is deformed according to the shape of the model, and the continuous application of pressure can reduce the recovery, so that the product molding achieves the expected effect.

[0004] With respect to the above existing patents, there are still the following deficiencies. First, the efficiency of using wind power to cool the product is low, and after the vacuum forming, the edge of the product needs to be cut. The above device lacks this function, so subsequent processing operations are required, resulting in an increase in processing steps and reduced processing efficiency; and the heat generated in the heating component cannot quickly reach the surface of the plastic sheet, and the heating efficiency is low. In actual production, it takes more time to wait for the plastic sheet to reach the softening point, which reduces the thermoplastic efficiency. Therefore, a thermoplastic forming machine is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that in the prior art, the edge material of the finished product cannot be cut directly after the thermoplasticization is completed, and subsequent processing is required, which reduces the processing efficiency, and more time is required to wait for the plastic sheet to reach the softening point, resulting in reduced thermoplastic efficiency. A thermoplastic molding machine is proposed to solve the problem that in the prior art, the edge material of the finished product cannot be cut directly after the thermoplasticization is completed, and subsequent processing is required, which reduces the processing efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A thermoplastic forming machine comprises a thermoplastic platform and a water storage tank, wherein a thermoplastic mold is fixedly connected to the top of the thermoplastic platform, a vacuum forming groove is provided in the middle of the thermoplastic mold, a cooling groove is provided inside the thermoplastic mold, a water pump is fixedly connected to the side wall of the thermoplastic platform, an output end of the water pump is communicated with an inner cavity of the cooling groove, and an input end of the water pump is communicated with an inner cavity of the water storage tank, and further comprises: a heating component, which is arranged on the thermoplastic platform and is used to heat a plastic sheet raw material to a softening point; and a vacuum forming mechanism, which is arranged on the thermoplastic platform and is used to vacuum form the plastic sheet raw material that has reached the softening point.

[0008] To facilitate heating, preferably, the heating assembly includes a heating chamber, the top of the thermoplastic platform is rotatably connected to a reciprocating screw, the heating chamber is threadedly sleeved on the reciprocating screw, the bottom of the thermoplastic platform is connected to a lifting motor, the output end of the lifting motor is fixedly connected to the bottom end of the reciprocating screw, both sides of the thermoplastic platform are fixedly connected to guide rods, the connecting ears of the side walls of the heating chamber are slidably adjusted on the guide rods, the inner wall of the heating chamber is fixedly connected to a resistance wire, the top of the heating chamber is fixedly connected to a heater, and the heater and the resistance wire are electrically connected.

[0009] In order to improve the heating effect, a sealing groove is further opened in the heating bin, a sealing plate is slidably connected in the sealing groove, a first spring is fixedly connected between the top of the sealing plate and the sealing groove, and a heat blowing pipe is connected between the top of the sealing groove and the top of the inner cavity of the heating bin.

[0010] In order to improve the processing efficiency, preferably, a cutting groove is opened in the sealing plate, a pushing plate is slidably connected in the cutting groove, a second spring is fixedly connected between the top of the pushing plate and the cutting groove, a cutting blade is fixedly connected to the bottom of the pushing plate, and the cutting blade slides in contact with the inner wall of the lower end of the cutting groove, a steam pipe is connected to the outer wall of the cooling groove, the other end of the steam pipe passes through the top of the heating bin and is fixedly connected to the top of the sealing plate, the outer wall of the steam pipe is slidably connected to the heating bin, and the steam pipe is connected to the inner cavity of the cutting groove.

[0011] In order to facilitate vacuum forming, preferably, the vacuum forming mechanism includes a vacuum pump, which is fixedly connected to the bottom of the thermoplastic platform, and the vacuum pump is fixedly connected to two groups of vacuum pipes at the vacuum end, and the other ends of the two groups of vacuum pipes are connected to the bottom of the inner cavity of the vacuum forming mold groove. A gas delivery groove is opened in the thermoplastic mold, and the exhaust end of the vacuum pump is connected to the inner cavity of the gas delivery groove, and the distance from the gas delivery groove to the center of the vacuum forming mold groove is smaller than the distance from its top sealing plate to the center of the vacuum forming mold groove.

[0012] In order to facilitate demoulding, a back-blowing groove is further provided in the thermoplastic platform, one end of the back-blowing groove is connected to the inner cavity of the air delivery groove, and the other end of the back-blowing groove is connected to the bottom of the inner cavity of the suction mold groove, and a solenoid valve is provided in the back-blowing groove.

[0013] In order to improve the quality of thermoplasticization, preferably, a piston box is fixedly connected to the thermoplastic platform, a first slide plate is slidably connected to the upper part of the inner cavity of the piston box, limiting sleeves are fixedly connected to both sides of the bottom of the inner cavity of the piston box, a third spring is fixedly connected to the middle of the limiting sleeve, the top of the third spring is fixedly connected to the bottom of the first slide plate, a first push rod is fixedly connected to the top of the first slide plate, and the first push rod is located directly below the connecting ear between the heating chamber and the reciprocating screw rod, a blowing pipe is fixedly connected to the top of the thermoplastic mold, blowing holes are opened on the outer wall of the blowing pipe at equal intervals, the bottom of the blowing pipe is connected to a first conduit, and the other end of the first conduit is connected to the inner cavity of the piston box.

[0014] In order to improve the heating effect, preferably, a second slide plate is slidably sleeved between the outer walls of the limiting sleeve on both sides, the side walls of the second slide plate are slidably connected to the inner wall of the piston box, fourth springs are fixedly connected between the two sides of the bottom of the second slide plate and the piston box, a second conduit is connected to the bottom of the inner cavity of the piston box, the other end of the second conduit is connected to the inner cavity of the sealing groove, and a second push rod is fixedly connected to the bottom of the first slide plate.

[0015] Furthermore, a limiting guide rod is fixedly connected to the middle of the inner cavity of the limiting sleeve, the third spring is sleeved on the outside of the limiting guide rod, and the top end of the limiting guide rod extends through to the outside of the piston box.

[0016] In order to improve the cooling effect, preferably, the outer wall of the cooling tank is connected to a return pipe, and the other end of the return pipe is connected to the upper part of the inner cavity of the water storage tank.

[0017] Compared with the prior art, the present invention provides a thermoplastic forming machine having the following beneficial effects:

[0018] 1. The thermoplastic molding machine can quickly cool down the product after molding by transferring the water flow in the water storage tank to the cooling tank, which effectively improves the cooling efficiency. Part of the water flow will be vaporized and evaporated to push the cutting blade to move downward, so as to achieve the cutting of the edge of the thermoplastic product, simplify the construction steps, and improve the processing efficiency. The water flow filled in the cooling tank will flow back to the water storage tank along the return pipe, so as to achieve water circulation cooling and improve the cooling effect.

[0019] 2. The thermoplastic molding machine realizes the extrusion positioning of the plastic sheet and the sealing of the vacuum molding groove by moving the heating chamber downward, and then uses the resistance wire to generate heat in the sealed cavity, and cooperates with the air flow output from the blow pipe to the top of the heating chamber to make the heat quickly reach the surface of the plastic sheet, thereby effectively improving the heating efficiency, making the plastic sheet quickly reach the softening point, and improving the overall thermoplastic efficiency.

[0020] 3. The thermoplastic forming machine, through the operation of the vacuum pump, generates a pressure difference between the upper and lower parts of the plastic sheet, pushes the softened plastic sheet to the bottom of the vacuum mold groove, and completes the thermoplastic forming process. The greater the pressure difference, the greater the air pressure flowing back from the hot blowing pipe to the sealing groove, so that the sealing plate fits more closely to the surface of the plastic sheet, improving the sealing effect and positioning effect.

[0021] 4. When the heating chamber is moved upward and reset, the thermoplastic molding machine effectively accelerates the gas flow rate on the surface of the thermoplastic molding product through the airflow suction generated in the first duct and the second duct, so that the residual heat on the surface is dissipated more quickly, so as to carry out subsequent processing operations, thereby further improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a thermoplastic forming machine proposed by the present invention;

[0023] Figure 2 A schematic diagram of the overall structure of a thermoplastic forming machine proposed by the present invention from a side view;

[0024] Figure 3 A schematic diagram of a partial cross-sectional structure of a thermoplastic forming machine proposed by the present invention when viewed from above;

[0025] Figure 4 A schematic diagram of a half-section structure of a thermoplastic forming machine proposed by the present invention;

[0026] Figure 5 A thermoplastic molding machine proposed by the present invention Figure 4 A schematic diagram of the enlarged structure of the middle A area;

[0027] Figure 6 A schematic diagram of the internal structure of a piston box of a thermoplastic molding machine proposed by the present invention;

[0028] Figure 7 A schematic diagram of the internal structure of a thermoplastic mold of a thermoplastic molding machine proposed by the present invention;

[0029] Figure 8 A schematic diagram of the structure of a blister mechanism of a thermoplastic forming machine proposed by the present invention;

[0030] Fig. 9This is a schematic diagram of the transverse cross-sectional structure of a cooling tank of a thermoplastic molding machine proposed by the present invention.

[0031] In the figure: 1, thermoplastic platform; 2, water storage tank; 3, thermoplastic mold; 31, vacuum molding groove; 32, cooling groove; 321, steam pipe; 322, return pipe; 4, water pump; 5, heating component; 51, heating chamber; 52, reciprocating screw rod; 53, lifting motor; 54, guide rod; 55, resistance wire; 551, heater; 56, sealing groove; 561, first spring; 562, hot blowing pipe; 57, sealing plate; 571, cutting groove; 572, push plate; 573, second spring; 574, cutting blade; 6, blister mechanism; 61, vacuum pump; 62, exhaust pipe; 63, air delivery slot; 64, back-blowing slot; 7, piston box; 71, first slide plate; 72, limiting sleeve; 721, third spring; 722, limiting guide rod; 73, first push rod; 74, blowing pipe; 741, blowing hole; 742, first conduit; 75, second slide plate; 751, fourth spring; 752, second conduit; 753, second push rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Example:

[0035] Reference Figure 1-Figure 9 A thermoplastic molding machine includes a thermoplastic platform 1 and a water storage tank 2. A thermoplastic mold 3 is fixedly connected to the top of the thermoplastic platform 1. A suction mold groove 31 is opened in the middle of the thermoplastic mold 3. A cooling groove 32 is opened inside the thermoplastic mold 3. A water pump 4 is fixedly connected to the side wall of the thermoplastic platform 1. The output end of the water pump 4 is connected to the inner cavity of the cooling groove 32, and the input end of the water pump 4 is connected to the inner cavity of the water storage tank 2. A return pipe 322 is connected to the outer wall of the cooling groove 32, and the other end of the return pipe 322 is connected to the upper part of the inner cavity of the water storage tank 2. It also includes: a heating component 5, which is arranged on the thermoplastic platform 1 and is used to heat the plastic sheet raw material to the softening point; a suction molding mechanism 6, which is arranged on the thermoplastic platform 1 and is used to suction-mold the plastic sheet raw material that has reached the softening point.

[0036] Through the arrangement of the above structure, the water pump 4 is turned on to extract the cooling water flow in the water storage tank 2 and transport it to the cooling tank 32, so as to cool the inner wall of the suction mold groove 31, so that the product after molding is quickly cooled down, which effectively improves the production efficiency, and the water flow filled in the cooling tank 32 will flow back to the water storage tank 2 along the return pipe 322, realizing water circulation cooling and improving the cooling effect.

[0037] Reference Figure 1-Figure 5 The heating assembly 5 comprises a heating chamber 51, a reciprocating screw rod 52 is rotatably connected to the top of the thermoplastic platform 1, the heating chamber 51 is threadedly sleeved on the reciprocating screw rod 52, a lifting motor 53 is connected to the bottom of the thermoplastic platform 1, the output end of the lifting motor 53 is fixedly connected to the bottom end of the reciprocating screw rod 52, guide rods 54 are fixedly connected to both sides of the thermoplastic platform 1, the connecting ears of the side walls of the heating chamber 51 are slidably adjusted on the guide rods 54, the guide rods 54 are used to limit the up and down movement of the heating chamber 51 to ensure that the heating chamber 51 can slide smoothly, a resistance wire 55 is fixedly connected to the inner wall of the heating chamber 51, a heater 551 is fixedly connected to the top of the heating chamber 51, the heater 551 is electrically connected to the resistance wire 55, a sealing groove 56 is opened in the heating chamber 51, a sealing plate 57 is slidably connected in the sealing groove 56, a first spring 561 is fixedly connected between the top of the sealing plate 57 and the sealing groove 56, and a heat blowing pipe 562 is connected between the top of the sealing groove 56 and the top of the inner cavity of the heating chamber 51;

[0038] Reference Figure 4 , Figure 6 and Figure 8, a piston box 7 is fixedly connected to the thermoplastic platform 1, a first slide plate 71 is slidably connected to the upper part of the inner cavity of the piston box 7, both sides of the bottom of the inner cavity of the piston box 7 are fixedly connected to the limiting sleeve 72, a third spring 721 is fixedly connected to the middle of the limiting sleeve 72, the top of the third spring 721 is fixedly connected to the bottom of the first slide plate 71, a limiting guide rod 722 is fixedly connected to the middle of the inner cavity of the limiting sleeve 72, the third spring 721 is sleeved on the outside of the limiting guide rod 722, and the top of the limiting guide rod 722 extends through to the outside of the piston box 7, the limiting sleeve 72 and the limiting guide rod 722 both play the role of sliding and limiting the third spring 721, ensuring that it moves upward along the limiting guide rod 722 The first push rod 73 is fixedly connected to the top of the first slide plate 71, and the first push rod 73 is located just below the connecting ear between the heating chamber 51 and the reciprocating screw rod 52, so that when the reciprocating screw rod 52 drives the heating chamber 51 to move downward, the first push rod 73 will be squeezed just right, and the top of the thermoplastic mold 3 is fixedly connected to a blowing pipe 74, and the outer wall of the blowing pipe 74 is provided with blowing holes 741 at equal intervals, and the bottom of the blowing pipe 74 is connected to a first conduit 742, and the other end of the first conduit 742 is connected to the inner cavity of the piston box 7, and the bottom of the first slide plate 71 is fixedly connected to a second push rod 753;

[0039] By setting the above structure, the lifting motor 53 is turned on to drive the reciprocating screw rod 52 to rotate, so that the heating chamber 51 moves downward, and the heater 551 is turned on to heat the resistance wire 55, so that the temperature inside the heating chamber 51 increases; and in the process of the heating chamber 51 moving downward, the first push rod 73 will be squeezed first to push the first slide plate 71 to move downward, so as to compress the inner cavity of the piston box 7, so that the gas in the inner cavity of the piston box 7 enters the blowing pipe 74 along the first guide tube 742, and then blows toward the surface of the plastic sheet along the blowing hole 741, so as to remove impurities attached to the surface of the plastic sheet, improve the cleanliness of the surface of the plastic sheet, avoid the impurities attached during the thermoplastic process from melting and adhering to the plastic sheet, and improve the quality of the thermoplastic product; then the heating chamber 51 continues to move downward, and when the bottom of the sealing plate 57 contacts the surface of the thermoplastic mold 3, the second push rod 753 will also synchronously contact the surface of the second slide plate 75, and then the pressure of the heating chamber 51 continues to move downward. Under the action of force, the sealing plate 57 will retract into the sealing groove 56, and squeeze the gas in the sealing groove 56, so that this part of the gas is blown downward from the top of the inner cavity of the heating chamber 51 along the heat blowing pipe 562, so that the heat generated by the resistance wire 55 reaches the surface of the plastic sheet more quickly, thereby effectively improving the heating efficiency. At the same time, the second push rod 753 will push the second slide plate 75 downward to compress the gas at the bottom of the inner cavity of the piston box 7, so that this part of the gas is transported to the sealing groove 56 along the second conduit 752, thereby increasing the amount of gas blown from the heat blowing pipe 562, further improving the heating efficiency. Subsequently, the bottom of the heating chamber 51 will be pressed against the surface of the plastic sheet to achieve positioning of the plastic sheet before blistering, thereby improving the stability of the plastic sheet in the subsequent blistering process, and the sealing plate 57 will also be more closely attached to the surface of the plastic sheet under the rebound action of the first spring 561, thereby effectively ensuring the sealing between the heating chamber 51 and the thermoplastic mold 3, reducing heat loss, and improving the thermoplastic effect.

[0040] Reference Figure 3-Figure 5 , wherein a cutting groove 571 is provided in the sealing plate 57, a pushing plate 572 is slidably connected in the cutting groove 571, a second spring 573 is fixedly connected between the top of the pushing plate 572 and the cutting groove 571, a cutting blade 574 is fixedly connected to the bottom of the pushing plate 572, and the cutting blade 574 slides in contact with the inner wall of the lower end of the cutting groove 571, a steam pipe 321 is connected to the outer wall of the cooling groove 32, the other end of the steam pipe 321 passes through the top of the heating bin 51 and is fixedly connected to the top of the sealing plate 57, the outer wall of the steam pipe 321 is slidably connected to the heating bin 51, and the steam pipe 321 is connected to the inner cavity of the cutting groove 571; it should be noted that the middle section of the steam pipe 321 is made of a hose material to meet the up and down movement of the heating bin 51, and when the sealing plate 57 contacts the surface of the thermoplastic mold 3, the sealing plate 57 will push the steam pipe 321 to slide upward along the heating bin 51;

[0041] By setting the above structure, part of the water flow entering the vacuum molding groove 31 will be vaporized to form steam due to the high temperature, and this part of the steam will enter the cutting groove 571 along the steam pipe 321, so that under the action of air pressure, the pushing plate 572 pushes the cutting blade 574 to move downward, so as to achieve the cutting of the edge of the thermoplastic product when the thermoplastic product is just formed and in a relatively soft state, thereby simplifying the construction steps and improving the processing efficiency.

[0042] Reference Figure 3 , Figure 4 , Figure 7 and Figure 8 , wherein the blister mechanism 6 comprises a vacuum pump 61, which is fixedly connected to the bottom of the thermoplastic platform 1, and the vacuum pump 61 is fixedly connected to two groups of blister pipes 62 at the vacuum end, and the other ends of the two groups of blister pipes 62 are both connected to the bottom of the inner cavity of the blister mold groove 31, and a gas delivery groove 63 is provided in the thermoplastic mold 3, and the exhaust end of the vacuum pump 61 is connected to the inner cavity of the gas delivery groove 63, and the distance from the gas delivery groove 63 to the center of the blister mold groove 31 is less than the distance from its top sealing plate 57 to the center of the blister mold groove 31, so as to ensure that when the heating chamber 51 moves down and fits on the top of the thermoplastic mold 3, the gas delivery groove 63 can be wrapped inside the heating chamber 51, and ensure that the gas delivery groove 63 can smoothly deliver gas; a back-blowing groove 64 is provided in the thermoplastic platform 1, and one end of the back-blowing groove 64 is connected to the inner cavity of the gas delivery groove 63, and the other end of the back-blowing groove 64 is connected to the bottom of the inner cavity of the blister mold groove 31, and an electromagnetic valve is provided in the back-blowing groove 64;

[0043] Through the arrangement of the above structure, when the plastic sheet is heated to the softening point, the heater 551 is turned off, the vacuum pump 61 is turned on, the gas in the thermoplastic mold 3 is extracted, and the gas is transported to the heating chamber 51 along the gas delivery groove 63, so as to generate a pressure difference between the upper and lower parts of the plastic sheet, push the softened plastic sheet to the bottom of the blister mold groove 31, make it flat on the bottom of the blister mold groove 31 to achieve shaping, and complete the thermoplastic molding process, and the greater the pressure difference, the greater the air pressure flowing back from the hot blowing pipe 562 to the sealing groove 56, so that the sealing plate 57 is more closely attached to the surface of the plastic sheet, improving the sealing effect and the positioning effect; and when the subsequent heating chamber 51 is reset upward, the solenoid valve in the backblowing groove 64 is opened, and the external airflow will enter the bottom of the inner cavity of the blister mold groove 31 along the gas delivery groove 63 and the backblowing groove 64, so as to push the thermoplastic molded product to move upward, realize demoulding and pushing, and effectively improve the processing efficiency.

[0044] Reference Figure 4 , Figure 6 and Figure 8, wherein a second slide plate 75 is slidably sleeved between the outer walls of the limiting sleeves 72 on both sides, the side walls of the second slide plate 75 are slidably connected to the inner walls of the piston box 7, and the connecting port of the first conduit 742 and the piston box 7 is located above the second slide plate 75, and fourth springs 751 are fixedly connected between the two sides of the bottom of the second slide plate 75 and the piston box 7, a second conduit 752 is connected to the bottom of the inner cavity of the piston box 7, the other end of the second conduit 752 is connected to the inner cavity of the sealing groove 56, and the middle section of the second conduit 752 is made of a hose material to meet the requirements of the heating chamber 51 to lift up and down.

[0045] Through the arrangement of the above structure, when the second push rod 753 hits the surface of the second slide plate 75, the pressure of the heating chamber 51 continuing to move downward will compress the gas at the bottom of the inner cavity of the piston box 7, so that this part of the gas is transported along the second conduit 752 to the sealing groove 56, thereby increasing the amount of gas blown downward from the heat blowing pipe 562 and further improving the heating efficiency.

[0046] Reference Figure 1-Figure 9In the present invention, when in use, the cut plastic sheet is placed on the thermoplastic mold 3, and then the lifting motor 53 is turned on to drive the reciprocating screw rod 52 to rotate, so that the heating chamber 51 moves downward, and at the same time, the heater 551 is turned on to heat the resistance wire 55, so that the internal temperature of the heating chamber 51 increases; and in the process of the heating chamber 51 moving downward, the first push rod 73 will be squeezed first to push the first slide plate 71 downward, thereby compressing the inner cavity of the piston box 7, so that the gas in the inner cavity of the piston box 7 enters the blowing pipe 74 along the first guide tube 742, and then blows toward the surface of the plastic sheet along the blowing hole 741, so as to remove impurities attached to the surface of the plastic sheet, improve the cleanliness of the surface of the plastic sheet, avoid the impurities attached during the thermoplastic process from melting and adhering to the plastic sheet, and improve the quality of the thermoplastic product; then the heating chamber 51 continues to move downward, and when the bottom of the sealing plate 57 contacts the surface of the thermoplastic mold 3, the second push rod 753 will also synchronously contact the surface of the second slide plate 75, and then Under the pressure of the heating chamber 51 continuing to move downward, the sealing plate 57 will retract into the sealing groove 56, and thereby squeeze the gas in the sealing groove 56, so that this part of the gas is blown downward from the top of the inner cavity of the heating chamber 51 along the heat blowing pipe 562, so that the heat generated by the resistance wire 55 reaches the surface of the plastic sheet more quickly, thereby effectively improving the heating efficiency. At the same time, the second push rod 753 will push the second slide plate 75 downward to compress the gas at the bottom of the inner cavity of the piston box 7, so that this part of the gas is transported to the sealing groove 56 along the second guide tube 752, thereby increasing the gas flow blown from the heat blowing pipe 562, further improving the heating efficiency. Subsequently, the bottom of the heating chamber 51 will be pressed against the surface of the plastic sheet to achieve the positioning of the plastic sheet before the blister forming, thereby improving the stability of the plastic sheet in the subsequent blister forming process, and the sealing plate 57 will also be more closely attached to the surface of the plastic sheet under the rebound effect of the first spring 561, thereby effectively ensuring the sealing between the heating chamber 51 and the thermoplastic mold 3, reducing heat loss, and improving the thermoplastic effect.

[0047] When the plastic sheet is heated to the softening point, the heater 551 is turned off, and the vacuum pump 61 is turned on to extract the gas in the thermoplastic mold 3 and transport it to the heating chamber 51 along the gas delivery groove 63, so as to generate a pressure difference between the upper and lower parts of the plastic sheet, and push the softened plastic sheet to the bottom of the blister mold groove 31, so that it is laid flat on the bottom of the blister mold groove 31 to achieve shaping, and the greater the pressure difference, the greater the air pressure flowing back from the hot blowing pipe 562 to the sealing groove 56, so that the sealing plate 57 fits more closely to the surface of the plastic sheet, improving the sealing effect and the positioning effect. At the same time, the water pump 4 is turned on to extract the cooling water flow in the water storage tank 2 and transport it to the cooling tank 32, so as to The inner wall of the mold 31 is cooled, so that the product after molding is quickly cooled and cooled, which effectively improves the production efficiency. Part of the water flow entering the vacuum molding mold groove 31 will be vaporized to form steam due to the high temperature, and this part of the steam will enter the cutting groove 571 along the steam pipe 321, so that under the action of air pressure, the pushing plate 572 pushes the cutting blade 574 downward, so that the edge of the thermoplastic product can be cut when the thermoplastic product is just formed and soft, simplifying the construction steps and improving the processing efficiency. At the same time, the water flow filled in the cooling groove 32 will flow back to the water storage tank 2 along the return pipe 322, realizing water circulation cooling and improving the cooling effect.

[0048] After the cooling is completed, the reciprocating screw 52 drives the heating chamber 51 to reset upward, thereby releasing the seal on the thermoplastic mold 3, and the sealing plate 57 and the cutting blade 574 will be reset under the rebound action of the first spring 561 and the second spring 573 respectively, and when the thermoplastic mold 3 is opened, the solenoid valve in the back-blowing groove 64 is opened. At this time, since the air pressure at the bottom of the inner cavity of the blister mold groove 31 is small and the external air pressure is large, the external air flow will enter the bottom of the inner cavity of the blister mold groove 31 along the air delivery groove 63 and the back-blowing groove 64, thereby pushing the thermoplastic molded product to move upward, realizing demoulding and pushing, and effectively improving the processing efficiency; and when the heating chamber 51 gradually releases the squeezing of the first push rod 73, the first conduit 742 and the second conduit 752 will generate reverse suction, thereby effectively accelerating the gas flow rate on the surface of the thermoplastic molded product, so that the residual temperature on the surface is dissipated more quickly, so as to carry out subsequent processing operations, further improving the processing efficiency.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thermoplastic forming machine, comprising a thermoplastic platform (1) and a water storage tank (2), characterized in that: The top of the thermoplastic platform (1) is fixedly connected to a thermoplastic mold (3), the middle of the thermoplastic mold (3) is provided with a plastic suction mold groove (31), the interior of the thermoplastic mold (3) is provided with a cooling groove (32), the side wall of the thermoplastic platform (1) is fixedly connected to a water pump (4), the output end of the water pump (4) is in communication with the inner cavity of the cooling groove (32), and the input end of the water pump (4) is in communication with the inner cavity of the water storage tank (2), and further comprises: A heating component (5), the heating component (5) being arranged on the thermoplastic platform (1) and used for heating the plastic sheet raw material to a softening point; A blister mechanism (6), the blister mechanism (6) being arranged on the thermoplastic platform (1) and used for blister molding a plastic sheet material that has reached a soft point; The heating assembly (5) comprises a heating chamber (51), the top of the thermoplastic platform (1) is rotatably connected to a reciprocating screw rod (52), the heating chamber (51) is threadedly sleeved on the reciprocating screw rod (52), the bottom of the thermoplastic platform (1) is connected to a lifting motor (53), the output end of the lifting motor (53) is fixedly connected to the bottom end of the reciprocating screw rod (52), both sides of the thermoplastic platform (1) are fixedly connected to guide rods (54), the connecting ears of the side walls of the heating chamber (51) are slidably adjusted on the guide rods (54), the inner wall of the heating chamber (51) is fixedly connected to a resistance wire (55), the top of the heating chamber (51) is fixedly connected to a heater (551), and the heater (551) and the resistance wire (55) are electrically connected; A sealing groove (56) is provided in the heating chamber (51), a sealing plate (57) is slidably connected in the sealing groove (56), a first spring (561) is fixedly connected between the top of the sealing plate (57) and the sealing groove (56), and a heat blowing pipe (562) is connected between the top of the sealing groove (56) and the top of the inner cavity of the heating chamber (51); The thermoplastic platform (1) is fixedly connected to a piston box (7), the upper part of the inner cavity of the piston box (7) is slidably connected to a first slide plate (71), both sides of the bottom of the inner cavity of the piston box (7) are fixedly connected to limiting sleeves (72), the middle part of the limiting sleeve (72) is fixedly connected to a third spring (721), the top of the third spring (721) is fixedly connected to the bottom of the first slide plate (71), the top of the first slide plate (71) is fixedly connected to a first push rod (73), and the first push rod (73) is located directly below the connecting ear between the heating chamber (51) and the reciprocating screw rod (52), the top of the thermoplastic mold (3) is fixedly connected to a blowing pipe (74), the outer wall of the blowing pipe (74) is provided with blowing holes (741) at equal intervals, the bottom of the blowing pipe (74) is connected to a first conduit (742), and the other end of the first conduit (742) is connected to the inner cavity of the piston box (7); A second slide plate (75) is slidably sleeved between the outer walls of the limiting sleeves (72) on both sides. The side walls of the second slide plate (75) are slidably connected to the inner wall of the piston box (7). Fourth springs (751) are fixedly connected between the two sides of the bottom of the second slide plate (75) and the piston box (7). The bottom of the inner cavity of the piston box (7) is connected to a second conduit (752). The other end of the second conduit (752) is connected to the inner cavity of the sealing groove (56). The bottom of the first slide plate (71) is fixedly connected to a second push rod (753).

2. A thermoplastic forming machine according to claim 1, characterized in that: The sealing plate (57) is provided with a cutting groove (571), a pushing plate (572) is slidably connected to the cutting groove (571), a second spring (573) is fixedly connected between the top of the pushing plate (572) and the cutting groove (571), a cutting blade (574) is fixedly connected to the bottom of the pushing plate (572), and the cutting blade (574) slides in contact with the inner wall of the lower end of the cutting groove (571), the outer wall of the cooling groove (32) is connected to a steam pipe (321), the other end of the steam pipe (321) passes through the top of the heating chamber (51) and is fixedly connected to the top of the sealing plate (57), the outer wall of the steam pipe (321) is slidably connected to the heating chamber (51), and the steam pipe (321) is connected to the inner cavity of the cutting groove (571).

3. A thermoplastic forming machine according to claim 1, characterized in that: The vacuum molding mechanism (6) comprises a vacuum pump (61), the vacuum pump (61) is fixedly connected to the bottom of the thermoplastic platform (1), the vacuum pump (61) is fixedly connected to two groups of vacuum pipes (62) at the vacuum pump (61) exhaust end, the other ends of the two groups of vacuum pipes (62) are both connected to the bottom of the inner cavity of the vacuum molding groove (31), the thermoplastic mold (3) is provided with an air delivery groove (63), the exhaust end of the vacuum pump (61) is connected to the inner cavity of the air delivery groove (63), and the distance from the air delivery groove (63) to the center of the vacuum molding groove (31) is smaller than the distance from the top sealing plate (57) to the center of the vacuum molding groove (31).

4. A thermoplastic forming machine according to claim 3, characterized in that: A back-blowing groove (64) is provided in the thermoplastic platform (1), one end of the back-blowing groove (64) is communicated with the inner cavity of the gas delivery groove (63), and the other end of the back-blowing groove (64) is communicated with the bottom of the inner cavity of the vacuum molding groove (31), and a solenoid valve is provided in the back-blowing groove (64).

5. A thermoplastic forming machine according to claim 1, characterized in that: The middle part of the inner cavity of the limiting sleeve (72) is fixedly connected to a limiting guide rod (722), the third spring (721) is sleeved on the outside of the limiting guide rod (722), and the top end of the limiting guide rod (722) extends through to the outside of the piston box (7).

6. A thermoplastic forming machine according to claim 1, characterized in that: The outer wall of the cooling tank (32) is connected to a water return pipe (322), and the other end of the water return pipe (322) is connected to the upper part of the inner cavity of the water storage tank (2).

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