Injection molding apparatus and demolding method for ultra-thin injection molded parts

Abstract

The application relates to the technical field of injection molding equipment, and particularly discloses injection molding equipment for super-thin injection molded parts and a demolding method, which further comprises an injection mechanism arranged in a lower workbench and extending to the top of the lower workbench and used for assisting a molding assembly in molding the super-thin injection molded parts and a demolding mechanism arranged at the bottom of the inner side of an upper workbench and used for demolding the super-thin injection molded parts after the injection molding is completed. The application keeps the lower mold body between the first guide plate and the second guide plate warm through the auxiliary assembly of the injection mechanism, avoids the temperature loss of the raw materials in the lower mold body being too fast, avoids the situation that color is uneven due to gelatinization being opaque because of the low temperature of the raw materials, or the internal stress of the plastic shell being increased, and is favorable for improving the injection molding effect of the super-thin injection molded parts. After molding, the temperature of the super-thin injection molded parts is prevented from rapidly decreasing, the problems of uneven demolding or damage to the super-thin injection molded parts are avoided, and the subsequent demolding mechanism is favorable for demolding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection molding equipment, in particular to an injection molding equipment and demolding method for ultra-thin injection molded parts. BACKGROUND

[0002] Injection molded parts refer to various injection molded products produced by injection molding machines, including various packaging, parts, etc., which are mainly made of polyethylene or polypropylene and other materials and added with various organic solvents. With the increasing use of injection molded parts, the application of ultra-thin injection molded parts is also becoming more and more widespread.

[0003] The injection molding machine with external cooling device disclosed in Chinese patent application No. 201710436592.5 has the problem that the density of plastic products is relatively low, which generally floats on the water surface, so that part of the plastic products cannot be effectively cooled. If the plastic products are manually immersed in water one by one, the labor cost will be increased and the cooling efficiency of this method will be low. The injection molding machine directly receives the injection molded parts after injection molding through the discharging channel and makes them automatically slide into the cooling water tank. The injection molded parts are pressed by the pressing assembly to completely immerse them in the cooling medium to improve the cooling effect and automatically complete the recycling operation after cooling under the driving of the pressing assembly, thereby improving the cooling efficiency and reducing the labor cost. However, it has the following problems.

[0004] The injection molding machine completely immerses the molded injection molded parts in the cooling medium to improve the cooling effect, but it cannot cool the injection molded parts during demolding, which reduces the demolding effect. In the prior art, the thickness of injection molded parts, especially ultra-thin injection molded parts, is usually thin, and the injection molding is difficult. There are certain problems in the process of injection molding and demolding, such as the temperature loss of injection raw materials during the transfer of injection raw materials between different stations, which is too fast and difficult to control to the appropriate injection molding temperature, which affects the molding effect and easily causes the injection molded parts to be defective. After molding, the cooling is too fast, which easily damages the injection molded parts. During demolding, the traditional vacuum chuck adsorption method is used to adsorb and transfer the demolded injection molded parts, which easily causes the deformation of the injection molded parts and affects the quality. To solve the above problems, an injection molding equipment and demolding method for ultra-thin injection molded parts are proposed. SUMMARY

[0005] The present application aims to provide an injection molding equipment and demolding method for ultra-thin injection molding parts, in order to overcome the shortcomings of the prior art, provide an injection molding equipment and demolding method for ultra-thin injection molding parts, control the temperature during the molding of the ultra-thin injection molding parts, improve the molding effect, control the temperature after molding, avoid the damage to the injection molding parts caused by the rapid temperature loss, and set the mechanism for taking out the injection molding parts during demolding, facilitate the taking out of the injection molding parts from the mold, and cause less damage to the injection molding parts.

[0006] To achieve the above object, the present application is realized by the following technical scheme: an injection molding equipment for ultra-thin injection molding parts, comprising a lower workbench placed on the ground and an upper workbench fixedly arranged on the top of the lower workbench, the inner side top of the upper workbench is respectively provided with a molding assembly for injection molding of the ultra-thin injection molding parts and an injection assembly for injection of raw materials into the molding assembly, further comprising an injection mechanism arranged in the lower workbench and extending to the top of the lower workbench for assisting the molding assembly to mold the ultra-thin injection molding parts, and a demolding mechanism arranged at the inner bottom of the upper workbench for demolding the ultra-thin injection molding parts after injection molding, the injection mechanism comprises a base fixedly arranged on the top of the lower workbench and an auxiliary assembly arranged in the inner part of the lower workbench and extending to the top of the base for controlling the temperature of the raw materials, the top of the lower workbench is provided with a driving assembly for driving the raw materials to transfer to a working position, the auxiliary assembly comprises;

[0007] A first guide plate is fixedly arranged on the top of the base, a second guide plate is fixedly arranged on the top of the base and inside the first guide plate, a first water guide pipe arranged vertically is fixedly arranged in the inner part of the first guide plate and the second guide plate, the first water guide pipes arranged on the same side of the first guide plate and the second guide plate are connected with second water guide pipes in communication with each other, the second water guide pipes are designed in a U shape, a channel for the raw materials to transfer to the working position is left between the first guide plate and the second guide plate, and the first guide plate and the second guide plate are designed in an arc shape;

[0008] A box body is fixedly arranged on the inner wall of the bottom of the lower workbench, an overflow assembly is arranged in the inner part of the box body, the overflow assembly comprises a partition plate fixedly arranged on the inner wall of the box body for dividing the inner cavity of the box body into two parts, and the overflow assembly is used for flowing the liquid on the top of the partition plate to the bottom of the partition plate.

[0009] Further, the auxiliary assembly further comprises;

[0010] An electric heating ring is fixedly sleeved on the outer wall of the box body and located on the top of the partition plate, a pump body is fixedly arranged on the top of the box body, a water inlet pipe extending to the bottom of the partition plate is fixedly arranged on the water inlet end of the pump body, a third water guide pipe connected with one side of the second water guide pipe is fixedly arranged on the water outlet end of the pump body, and a fourth water guide pipe extending to the top of the partition plate is fixedly arranged on the end of the other side of the second water guide pipe away from the first water guide pipe.

[0011] Further, the overflow assembly further comprises;

[0012] The drainage pipe is fixedly arranged on the top of the partition plate and extends to the bottom of the partition plate. An inner wall at one end of the bottom of the partition plate is fixedly provided with a ball valve seat. The ball valve seat is sleeved with a ball. The top of the ball is fixedly provided with a traction rope. The other end of the traction rope is fixedly provided with a floating ball. The top of the ball valve seat is designed as hollow.

[0013] Further, the driving assembly comprises;

[0014] The rotating ring is sleeved on the top of the base and located between the first guide plate and the second guide plate. The outer wall of the rotating ring is provided with a plurality of tooth grooves arranged in an annular array at the lower end.

[0015] The servo motor is fixedly arranged in the lower workbench. The output shaft of the servo motor is fixedly provided with a first rotating shaft through a shaft coupling. The side wall of the first rotating shaft is fixedly sleeved with a first gear. The top of the lower workbench is rotatably connected with a second rotating shaft extending into the lower workbench. The second rotating shaft is fixedly sleeved with a second gear and a third gear at one end of the side wall of the top of the lower workbench and the inside of the lower workbench, respectively. The third gear is engaged with the first gear. The second gear is engaged with the tooth grooves.

[0016] The fixed ring is fixedly arranged on the top of the workbench. The top of the fixed ring is provided with an annular sliding groove. The annular sliding groove is internally placed with an annular sliding block fixedly connected with the bottom of the rotating ring. The annular sliding block rotates in the annular sliding groove to limit the movement of the rotating ring.

[0017] Further, the demolding mechanism comprises an electric sliding rail fixedly arranged on the top of the inner side of the upper workbench and extending to the outer side of the upper workbench, and a first air cylinder fixedly arranged on the sliding end of the electric sliding rail. The extension shaft of the first air cylinder is provided with a dismounting assembly. The extension shaft of the first air cylinder is mounted with a balloon through the dismounting assembly to drive the balloon to move. The demolding mechanism further comprises a first air guide pipe connected with the dismounting assembly and extending to the top of the upper workbench to supply air to the balloon.

[0018] Further, the dismounting assembly comprises;

[0019] The connecting seat is fixedly arranged on the bottom end of the extension shaft of the first air cylinder. The outer wall of the connecting seat is sleeved with a mounting ring for reversely mounting the balloon. The outer wall of the mounting ring is sleeved with a resilient ring with an internal air guide cavity. The outer wall of the resilient ring is fixedly provided with a second air guide pipe extending into the air guide cavity. The outer wall of the connecting seat is threadedly connected with a threaded sleeve for limiting the mounting ring. The lower end of the outer wall of the connecting seat is designed as an inverted circular table. The bottom of the connecting seat is provided with an air guide hole in communication with the first air guide pipe to input the gas into the balloon through the first air guide pipe and the air guide hole.

[0020] Further, the forming assembly comprises;

[0021] The second cylinder is fixedly arranged at the inner top of the upper workbench, and the bottom end of the second cylinder telescopic shaft is fixedly provided with an upper mold body.

[0022] The lower mold body is fixedly arranged at the top of the rotating ring, and the lower mold body is matched with the upper mold body to form the raw material injected into the lower mold body by the injection assembly.

[0023] Further, the injection assembly comprises;

[0024] The third cylinder is fixedly arranged at the inner top of the upper workbench, and the bottom end of the third cylinder telescopic shaft is fixedly provided with a discharge nozzle, and the feeding end of the discharge nozzle is fixedly provided with a feeding pipe.

[0025] Further, a demolding method of the injection molding equipment for the ultra-thin injection molded part, the method comprises the following steps:

[0026] S1: injecting the raw material into the molding assembly through the injection assembly;

[0027] S2: after the raw material is injected into the molding assembly, the raw material in the molding assembly is transferred to the molding position by the driving assembly, so that the molding assembly is injection molded;

[0028] S3: after the molding is completed, the driving assembly drives the molded ultra-thin injection molded part to the demolding position to be demolded by the demolding mechanism;

[0029] S4: in the process of transferring the raw material to the molding and demolding by the driving assembly, the auxiliary assembly keeps the raw material warm, so that the temperature of the raw material does not flow away too fast.

[0030] Further, the temperature kept by the auxiliary assembly corresponds to the injection molding temperature of the ultra-thin injection molded part.

[0031] The present application provides an injection molding equipment and a demolding method for an ultra-thin injection molded part.

[0032] 1、 the auxiliary assembly of the injection mechanism keeps the lower mold body between the first guide plate and the second guide plate warm, avoids the temperature loss of the raw material in the lower mold body too fast, avoids the color unevenness caused by the gelatinization of the raw material with low temperature, or increases the internal stress of the plastic shell, etc., is beneficial to improve the injection molding effect of the ultra-thin injection molded part, and after molding, avoids the rapid temperature drop of the ultra-thin injection molded part, and the problems of uneven demolding or damage to the ultra-thin injection molded part, which is beneficial to the subsequent demolding mechanism.

[0033] 2、The application makes the balloon cool and demould the ultra-thin injection molding piece in the lower mold body by cold gas while the balloon is expanding, and the expanding balloon can uniformly support the inner wall of the ultra-thin injection molding piece, so that the molded ultra-thin injection molding piece is conveniently taken out of the lower mold body, the demoulding is convenient, the damage to the ultra-thin injection molding piece is small, and the demoulding effect is improved.

[0034] 3、The application adjusts the position of the lower mold body through the driving assembly of the injection molding mechanism, so that the lower mold body circulates at the injection material position, the molding position and the demoulding position, is convenient for actual injection molding use, and is transferred in the channel between the first guide plate and the second guide plate together with the raw material or the molded ultra-thin injection molding piece, is convenient for actual auxiliary demoulding and molding use, and the liquid in the box is conveniently circulated and heated through the overflow assembly, and is convenient for actual use.

[0035] 4、The application disassembles and assembles the balloon through the disassembling and assembling assembly, improves the stability of the sealing of the air inlet of the balloon, avoids the air leakage of the balloon when the balloon moves with the first air cylinder, improves the stability of demoulding, forms a cavity in the elastic ring, uniformly applies force to the air inlet of the balloon, guarantees the stability of the installation of the balloon and the sealing of the air inlet connection of the balloon. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the overall structure schematic view of the injection molding equipment suitable for the ultra-thin injection molding piece of the application;

[0037] Figure 2 It is the top view structure schematic view of the lower workbench of the application;

[0038] Figure 3 It is the sectional view structure schematic view of the lower workbench of the application;

[0039] Figure 4 It is the structure schematic view of the auxiliary assembly and the driving assembly of the application;

[0040] Figure 5 It is the structure schematic view of the driving assembly and the lower mold body of the application;

[0041] Figure 6 It is the sectional view structure schematic view of the auxiliary assembly and the first guide plate of the application;

[0042] Figure 7 It is the sectional view structure schematic view of the box and the electric heating ring of the application;

[0043] Figure 8 It is the structure schematic view of the overflow assembly of the application;

[0044] Figure 9 It is the bottom view structure schematic view of the upper workbench of the application;

[0045] Figure 10 Structure diagram of the demolding mechanism of the present application;

[0046] Figure 11 Structure diagram of the disassembly and assembly component of the present application;

[0047] Figure 12 Structure diagram of the connecting seat of the present application.

[0048] The reference signs involved in the above-mentioned drawings: 1, lower workbench; 2, upper workbench; 3, injection assembly; 31, feeding pipe; 32, third cylinder; 33, discharging nozzle; 4, molding assembly; 41, lower mold body; 42, upper mold body; 43, second cylinder; 5, demolding mechanism; 51, first cylinder; 52, electric sliding rail; 53, first air guide pipe; 54, air ball; 55, disassembly and assembly component; 551, second air guide pipe; 552, threaded sleeve; 553, connecting seat; 554, mounting ring; 555, elastic ring; 556, air guide hole; 6, injection mechanism; 61, auxiliary assembly; 611, first guide plate; 612, second guide plate; 613, first water guide pipe; 614, fourth water guide pipe; 615, water inlet pipe; 616, box body; 617, electric heating ring; 618, overflow assembly; 6181, drainage pipe; 6182, partition plate; 6183, floating ball; 6184, ball valve seat; 6185, ball body; 619, third water guide pipe; 6191, second water guide pipe; 62, driving assembly; 621, second rotating shaft; 622, first rotating shaft; 623, servo motor; 624, fixing ring; 625, annular sliding groove; 626, rotating ring; 63, base. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0050] Embodiment one; please refer to Figure 1 , Figure 2 and Figure 3The utility model provides an injection molding equipment of super thin injection molding part, including the lower workbench 1 of being placed on the ground and the upper workbench 2 of being fixed in the top of lower workbench 1, the inside top of upper workbench 2 is provided with the forming assembly 4 for the injection molding of super thin injection molding part and the injection material assembly 3 for the injection of injection material to forming assembly 4 respectively, it is characterized by further including the injection mechanism 6 for assisting forming assembly 4 to the molding of super thin injection molding part being set in the inside of lower workbench 1 and extending to the top of lower workbench 1 and the stripping mechanism 5 for the stripping of super thin injection molding part of injection molding completion being set in the bottom of the inside of upper workbench 2, injection mechanism 6 includes the pedestal 63 of being fixed in the top of lower workbench 1 and the auxiliary assembly 61 for the temperature control of injection material being set in the inside of lower workbench 1 and extending to the top of pedestal 63, the top of lower workbench 1 is provided with the drive assembly 62 for the driving of injection material transfer work position, auxiliary assembly 61 includes;

[0051] The first guide plate 611 is fixed on the top of the pedestal 63, the second guide plate 612 is fixed on the top of the pedestal 63 and inside the first guide plate 611, the first guide water pipe 613 is fixed inside the first guide plate 611 and the second guide plate 612, the first guide water pipe 613 on the same side of the first guide plate 611 and the second guide plate 612 is connected with the second guide water pipe 6191 which communicates with each other, the second guide water pipe 6191 is designed in U shape, the first guide plate 611 and the second guide plate 612 are designed in arc shape and leave a channel for the injection material transfer work position between them.

[0052] The box body 616 is fixed on the inner wall of the bottom of the lower workbench 1, the overflow assembly 618 is arranged in the box body 616, the overflow assembly 618 includes the partition plate 6182 fixed on the inner wall of the box body 616 for dividing the inner cavity of the box body 616 into two parts, and the overflow assembly 618 is used for flowing the liquid on the top of the partition plate 6182 to the bottom of the partition plate 6182.

[0053] Please refer to Figure 3 、 Figure 4 、 Figure 6 And Figure 7 , the auxiliary assembly 61 further includes

[0054] The electric heating ring 617 is fixedly sleeved on the outer wall of the box body 616 and located on the top of the partition plate 6182, the pump body is fixed on the top of the box body 616, the water inlet pipe 615 extending to the bottom of the partition plate 6182 is fixed on the water inlet end of the pump body, the third guide water pipe 619 connected with one side of the second guide water pipe 6191 is fixed on the water outlet end of the pump body, and the fourth guide water pipe 614 extending to the top of the partition plate 6182 is fixed on the other side of the second guide water pipe 6191 away from the first guide water pipe 613.

[0055] In specific implementation, the box 616 reserves liquid such as water for heat preservation. The liquid on the top of the partition plate 6182 in the box 616 is heated by the electric heating ring 617. The pump body is started. The water inlet end of the pump body draws the liquid in the box 616 into the pump body through the water inlet pipe 615, and then the liquid is discharged from the water outlet end of the pump body, the third water guide pipe 619, the second water guide pipe 6191 to the first water guide pipe 613, so as to heat the lower mold body 41 in the channel formed by the first guide plate 611 and the second guide plate 612, avoid the temperature loss of the raw material in the lower mold body 41, avoid the gelatinization of the raw material with low temperature, and avoid the color unevenness caused by the gelatinization, and avoid the increase of the internal stress of the plastic shell, so as to improve the injection molding effect of the ultra-thin injection molding part.

[0056] After the molding is completed, the liquid itself will cause a certain heat loss in the flowing process. When the liquid flows from one side of the first guide plate 611 to the other side, the temperature will decrease, so as to avoid the rapid temperature drop of the ultra-thin injection molding part after the molding, and avoid the demolding unevenness or damage of the ultra-thin injection molding part, and facilitate the demolding of the subsequent demolding mechanism 5.

[0057] Please refer to Figure 7 and Figure 8 , the overflow assembly 618 further comprises;

[0058] The drain pipe 6181 is fixedly sleeved on the top of the partition plate 6182 and extends to the bottom of the partition plate 6182. An inner wall of one end of the partition plate 6182 at the bottom is fixedly provided with a ball valve seat 6184. The ball valve seat 6184 is sleeved with a ball 6185 in the inside. The top of the ball 6185 is fixedly provided with a traction rope. The other end of the traction rope is fixedly provided with a floating ball 6183. The top of the ball valve seat 6184 is designed as hollow.

[0059] In specific implementation, the liquid flows through the first water guide pipe 613 and then circulates to the top of the partition plate 6182 and is heated by the electric heating ring 617 to meet the next use. When the liquid on the top of the partition plate 6182 is retained for a certain amount, the buoyancy drives the floating ball 6183 to move upward, so as to drive the ball 6185 and the ball valve seat 6184 to separate through the traction rope, and then make the liquid on the top of the partition plate 6182 flow to the bottom of the partition plate 6182 through the drain pipe 6181 and the ball valve seat 6184, so as to be pumped away by the water inlet pipe 615 for heat preservation, so as to circulate, which is convenient for actual use.

[0060] Please refer to Figure 4 and Figure 5 , the drive assembly 62 comprises;

[0061] The rotating ring 626 is sleeved on the top of the base 63 and located between the first guide plate 611 and the second guide plate 612, and the outer wall of the rotating ring 626 is provided with a plurality of tooth grooves arranged in an annular array at the lower end;

[0062] The servo motor 623 is fixedly arranged in the lower workbench 1, and the output shaft of the servo motor 623 is fixedly provided with the first rotating shaft 622 through the shaft coupling. The side wall of the first rotating shaft 622 is fixedly sleeved with the first gear. The top of the lower workbench 1 is rotatably connected with the second rotating shaft 621 extending into the lower workbench 1. The second rotating shaft 621 is fixedly sleeved with the second gear and the third gear at the top of the lower workbench 1 and the side wall of the inner end of the lower workbench 1 respectively. The third gear is engaged with the first gear, and the second gear is engaged with the tooth groove.

[0063] The fixed ring 624 is fixedly arranged on the top of the workbench. The top of the fixed ring 624 is provided with an annular sliding groove 625. The annular sliding groove 625 is internally placed with an annular sliding block fixedly connected with the bottom of the rotating ring 626. The annular sliding block rotates in the annular sliding groove 625 for limiting the movement of the rotating ring 626.

[0064] In specific implementation, the servo motor 623 is started. The output shaft of the servo motor 623 drives the first rotating shaft 622 to rotate. The first rotating shaft 622 drives the second rotating shaft 621 to rotate through the first gear and the third gear. The second rotating shaft 621 drives the rotating ring 626 to rotate along the annular sliding groove 625 through the second gear and the tooth groove, so as to adjust the position of the lower mold body 41, so that it circulates in the injection position, the molding position and the demolding position, which is convenient for actual injection molding use, and makes the lower mold body 41 together with the raw material or the molded ultra-thin injection molded part transfer in the channel between the first guide plate 611 and the second guide plate 612, which is convenient for actual auxiliary demolding and molding use.

[0065] Please refer to Figure 1 and Figure 9 , the molding assembly 4 comprises;

[0066] The second cylinder 43 is fixedly arranged on the inner top of the upper workbench 2. The bottom end of the telescopic shaft of the second cylinder 43 is fixedly provided with the upper mold body 42.

[0067] The lower mold body 41 is fixedly arranged on the top of the rotating ring 626. The lower mold body 41 cooperates with the upper mold body 42 to mold the raw material injected into the lower mold body 41 by the injection assembly 3.

[0068] The second cylinder 43 is started. The telescopic shaft of the second cylinder 43 drives the upper mold body 42 to move, so that the upper mold body 42 cooperates with the lower mold body 41 to mold the raw material in the lower mold body 41.

[0069] Please refer to Figure 1 and Figure 9 , the injection assembly 3 comprises;

[0070] The third cylinder 32 is fixedly arranged at the inner top of the upper workbench 2, and the bottom end of the telescopic shaft of the third cylinder 32 is fixedly provided with a discharging nozzle 33, and the feeding end of the discharging nozzle 33 is fixedly provided with a feeding pipe 31.

[0071] In specific implementation, the third cylinder 32 is started, the telescopic shaft of the third cylinder 32 drives the discharging nozzle 33 to move to the top of the lower mold body 41, then the raw material is discharged into the lower mold body 41 through the feeding pipe 31 and the discharging nozzle 33 by connecting the raw material storage tank to the feeding pipe 31, and the first cylinder 51, the second cylinder 43 and the third cylinder 32 are connected with the external control gas circuit, which is convenient for actual use.

[0072] Embodiment two; please refer to Figure 9 and Figure 10 The difference between the technical scheme of the embodiment and the embodiment one is that the demolding mechanism 5 comprises an electric sliding rail 52 fixedly arranged at the inner top of the upper workbench 2 and extending to the outer side of the upper workbench 2, and a first cylinder 51 fixedly arranged at the sliding end of the electric sliding rail 52, the telescopic shaft of the first cylinder 51 is provided with a dismounting assembly 55, and a balloon 54 is installed on the telescopic shaft of the first cylinder 51 through the dismounting assembly 55, so as to drive the balloon 54 to move, and the demolding mechanism 5 further comprises a first air guide pipe 53 connected with the dismounting assembly 55 and extending to the top of the upper workbench 2 for supplying air to the balloon 54.

[0073] In specific implementation, the balloon 54 is installed through the dismounting assembly 55, after installation, the cold gas is flowed into the balloon 54 through the first air guide pipe 53 and the air guide hole 556 by connecting the cold gas pipeline to the first air guide pipe 53, so that the balloon 54 is inflated and at the same time the formed ultra-thin injection molding part in the lower mold body 41 is cooled and demolded by the cold gas, and the inflated balloon 54 can uniformly support the inner wall of the ultra-thin injection molding part, so as to facilitate taking out the formed ultra-thin injection molding part from the lower mold body 41, facilitate demolding, and cause less damage to the ultra-thin injection molding part, improve the demolding effect, and after demolding, the balloon 54 is deflated by discharging or backflowing the cold gas, so as to place the demolded ultra-thin injection molding part at a specified position.

[0074] The balloon 54 is made of high-temperature-resistant material to avoid explosion after the balloon 54 contacts the formed ultra-thin injection molding part, and the first water guide pipe 613 is designed as a hose and has a length reserved for movement of the first cylinder 51, so as to ensure normal use.

[0075] Please refer to Figure 10 , Figure 11 and Figure 12 The dismounting assembly 55 comprises;

[0076] The connecting seat 553 is fixed at the bottom end of the telescopic shaft of the first cylinder 51. The outer wall of the connecting seat 553 is sleeved with a mounting ring 554 for reversely folding the balloon 54. The outer wall of the mounting ring 554 is sleeved with an elastic ring 555 with a built-in air guide cavity. The outer wall of the elastic ring 555 is fixedly provided with a second air guide pipe 551 extending into the air guide cavity. The outer wall of the connecting seat 553 is threadedly connected with a threaded sleeve 552 for limiting the mounting ring 554. The lower end of the outer wall of the connecting seat 553 is designed in a reverse circular table shape. The bottom of the connecting seat 553 is provided with an air guide hole 556 in communication with the first air guide pipe 53, so as to input air into the balloon 54 through the first air guide pipe 53 and the air guide hole 556.

[0077] In specific implementation, the inner wall of the air inlet position of the balloon 54 is sleeved on the outer wall of the bottom of the connecting seat 553. Then, the balloon 54 is folded outward along the inner wall of the mounting ring 554 and is sleeved on the outer wall of the mounting ring 554. By reversely folding, the stability of the seal at the air inlet of the balloon 54 is improved, and the condition of air leakage during movement of the first cylinder 51 is avoided, thereby improving the stability of demolding. After the folding is completed, the elastic ring 555 is sleeved on the outer wall of the mounting ring 554. Then, the second air guide pipe 551 is connected with a vacuum air extraction device, so that a cavity is formed in the elastic ring 555, thereby uniformly applying force to the air inlet of the balloon 54, ensuring the stability of the installation of the balloon 54 and the sealing of the connection position of the air inlet of the balloon 54.

[0078] A demolding method of an injection molding equipment for ultrathin injection molded parts, which adopts an injection molding equipment for ultrathin injection molded parts, and comprises the following steps:

[0079] S1: injecting raw materials into the lower mold body 41 of the molding assembly 4 through the injection assembly 3;

[0080] S2: after the raw materials are injected into the lower mold body 41 of the molding assembly 4, the raw materials in the lower mold body 41 of the molding assembly 4 are transferred to the bottom of the second cylinder 43 by the driving assembly 62, so that the molding assembly 4 performs injection molding on the raw materials;

[0081] S3: after the molding is completed, the molded ultrathin injection molded part is transferred to the bottom of the demolding mechanism 5 by the driving assembly 62, and is demolded by the demolding mechanism 5. After the demolding is completed, the molded ultrathin injection molded part is transferred to the next working position by the electric sliding rail 52. After the transfer is completed, the demolding mechanism 5 is reset for next demolding;

[0082] S4: in the process of transferring raw materials to the molding position by the driving assembly 62 and transferring the molded ultrathin injection molded part to the demolding position, the auxiliary assembly 61 keeps the raw materials warm, so that the temperature of the raw materials does not lose too fast, improves the effect of injection molding, at the same time, avoids the damage of the ultrathin injection molded part caused by the rapid temperature drop after molding when demolding, improves the demolding efficiency.

[0083] The temperature kept by the auxiliary assembly 61 corresponds to the injection molding temperature of the ultrathin injection molded part, and the temperature is kept according to the material and injection requirements of the ultrathin injection molded part.

[0084] The electronic devices such as the servo motor 623 of the application are connected with the external power supply and the controller, which is convenient for actual control and use.

[0085] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0086] It should be noted that in this paper, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0087] Although the embodiments of the application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. An injection molding apparatus for an ultra-thin injection molded part, comprising a lower worktable placed on the ground and an upper worktable fixedly arranged on the top of the lower worktable, an inner side top of the upper worktable is respectively provided with a molding assembly for injection molding the ultra-thin injection molded part and a material injection assembly for injecting raw material into the molding assembly, characterized in that, The injection molding mechanism is arranged in the lower workbench and extends to the top of the lower workbench for assisting the forming assembly in forming the ultra-thin injection molding part, and the demolding mechanism is arranged at the bottom of the inner side of the upper workbench for demolding the ultra-thin injection molding part after the injection molding is completed, the injection molding mechanism comprises a base fixedly arranged at the top of the lower workbench and an auxiliary assembly arranged in the lower workbench and extending to the top of the base for controlling the temperature of the raw material, and the top of the lower workbench is provided with a driving assembly for driving the raw material to transfer to a working position, and the auxiliary assembly comprises; The first guide plate is fixedly arranged at the top of the base, the second guide plate is fixedly arranged at the top of the base and located at the inner side of the first guide plate, the first guide plate and the second guide plate are both fixedly provided with vertically arranged first water guide pipes, the first water guide pipes located at the same side of the first guide plate and the second guide plate are both connected with second water guide pipes in communication with each other, the second water guide pipes are designed in a U shape, the first guide plate and the second guide plate are both designed in an arc shape and leave a channel for the raw material transfer working position therebetween; The box body is fixedly arranged at the inner wall of the bottom of the lower workbench, the inner portion of the box body is provided with an overflow assembly, the overflow assembly comprises a partition plate fixedly arranged at the inner side wall of the box body for dividing the inner cavity of the box body into two parts, and the overflow assembly is used for flowing the liquid at the top of the partition plate to the bottom of the partition plate; The auxiliary assembly further comprises The electric heating ring is fixedly sleeved on the outer wall of the box body and located at the top of the partition plate, the top of the box body is fixedly provided with a pump body, the water inlet end of the pump body is fixedly provided with a water inlet pipe extending to the bottom of the partition plate, the water outlet end of the pump body is fixedly provided with a third water guide pipe connected with one side of the second water guide pipe, and the other side of the second water guide pipe is fixedly provided with a fourth water guide pipe extending to the top of the partition plate; The overflow assembly further comprises The drainage pipe is fixedly sleeved on the top of the partition plate and extends to the bottom of the partition plate, one end of the drainage pipe located at the bottom of the partition plate is fixedly provided with a ball valve seat on the inner wall thereof, a ball body is sleeved in the inner portion of the ball valve seat, a traction rope is fixedly arranged at the top of the ball body, a floating ball is fixedly arranged at the other end of the traction rope, the top of the ball valve seat is designed in a hollow manner, and the demolding mechanism comprises an electric sliding rail fixedly arranged at the top of the inner side of the upper workbench and extending to the outer side of the upper workbench and a first air cylinder fixedly arranged at the sliding end of the electric sliding rail, the telescopic shaft of the first air cylinder is provided with a dismounting assembly, the telescopic shaft of the first air cylinder is mounted with an air bag through the dismounting assembly for driving the air bag to move, and the demolding mechanism further comprises a first air guide pipe connected with the dismounting assembly and extending to the top of the upper workbench for supplying air to the air bag; The dismounting assembly comprises The connecting seat is fixedly arranged at the bottom end of the telescopic shaft of the first air cylinder, the outer wall of the connecting seat is sleeved with a mounting ring for reversely mounting the air bag, the outer wall of the mounting ring is sleeved with an elastic ring with an air guide cavity built-in, the outer wall of the elastic ring is fixedly provided with a second air guide pipe extending into the air guide cavity, the outer wall of the connecting seat is threadedly connected with a threaded sleeve for limiting the mounting ring, the lower end of the outer wall of the connecting seat is designed in a reverse circular table shape, and the bottom of the connecting seat is provided with an air guide hole in communication with the first air guide pipe for inputting the gas into the air bag through the first air guide pipe and the air guide hole.

2. An injection molding apparatus for an ultra-thin injection molded part as defined in claim 1, wherein, The driving assembly comprises The rotating ring is sleeved on the top of the base and located between the first guide plate and the second guide plate, and the outer wall of the rotating ring is provided with a plurality of tooth grooves arranged in an annular array at the lower end; The servo motor is fixedly arranged in the lower workbench, and the output shaft of the servo motor is fixedly provided with a first rotating shaft through a shaft coupling. The side wall of the first rotating shaft is fixedly sleeved with a first gear. The top of the lower workbench is rotatably connected with a second rotating shaft extending into the lower workbench. The second rotating shaft is fixedly sleeved with a second gear and a third gear at the top of the lower workbench and the side wall of the inner end of the lower workbench respectively. The third gear is engaged with the first gear, and the second gear is engaged with the tooth groove. The fixed ring is fixedly arranged on the top of the workbench, and the top of the fixed ring is provided with an annular sliding groove. An annular sliding block fixedly connected with the bottom of the rotating ring is arranged in the annular sliding groove. The annular sliding block rotates in the annular sliding groove to limit the movement of the rotating ring.

3. An injection molding apparatus for an ultra-thin injection molded part as defined in claim 2, wherein, The forming assembly comprises; The second cylinder is fixedly arranged on the inner top of the upper workbench, and the bottom end of the second cylinder is fixedly provided with an upper die body. The lower die body is fixedly arranged on the top of the rotating ring, and the lower die body cooperates with the upper die body to shape the raw material injected into the lower die body by the injection assembly.

4. An injection molding apparatus for an ultra-thin injection molded part as defined in claim 1, wherein, The injection assembly comprises; The third cylinder is fixedly arranged on the inner top of the upper workbench, and the bottom end of the third cylinder is fixedly provided with a discharge nozzle. The discharge nozzle is fixedly provided with an inlet pipe at the inlet end.

5. A demolding method for an injection molding apparatus of an ultrathin injection molded part, characterized by, The method comprises the following steps: S1: injecting raw materials into the forming assembly through the injection assembly; S2: After the raw materials are injected into the forming assembly, the driving assembly drives the raw materials in the forming assembly to shift to the forming position, so that the forming assembly can be injection molded; S3: After the forming is completed, the driving assembly drives the formed ultrathin injection molded part to shift to the demolding position to be demolded by the demolding mechanism; S4: In the process of shifting the raw materials to the forming and demolding by the driving assembly, the auxiliary assembly can keep the raw materials warm, so that the temperature of the raw materials will not be lost too quickly.

6. A demolding method of an injection molding apparatus for an ultrathin injection molded part according to claim 5, characterized in that, The temperature of the auxiliary assembly is set corresponding to the temperature of the ultrathin injection molded part.

Images