Auxiliary demolding device of injection-blow hollow forming machine

Abstract

The invention discloses an auxiliary demolding device of an injection-blow hollow forming machine, and relates to the technical field of blow molding demolding, the auxiliary demolding device comprises a main body base, an injection molding machine, a blow molding machine and a demolding box are sequentially arranged at the upper end of the main body base, and the auxiliary demolding device further comprises a transverse movement drive, a transverse movement driving device and a transverse movement driving device, the driving mechanism is used for driving the forming lower mold to move among the injection molding machine, the blow molding machine and the demolding box; the demolding mechanism is arranged in the demolding box and is used for demolding a product on the forming lower mold; the discharging assembly is used for moving the demolding mechanism and the demolded product out of the demolding box; the refrigeration fan is arranged on the demolding box and is used for cooling and shaping a molded product in the demolding box; according to the mold, different demolding assemblies are arranged to achieve auxiliary demolding of different types of products, the demolding efficiency of the products is effectively improved, damage to the products in the demolding process is avoided, and the forming quality of the products is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of blow molding demolding, and particularly relates to an auxiliary demolding device for an injection blow hollow molding machine. Background Art

[0002] An injection blow hollow molding machine is an advanced plastic processing equipment that combines the injection molding and blow molding processes into one, achieving the efficient production of hollow products. This molding machine is mainly used to manufacture various hollow plastic products, such as food packaging bottles, pharmaceutical packaging bottles, cosmetic containers, and packaging bottles for some high-end daily necessities.

[0003] The working principle of the injection blow hollow molding machine is to inject molten plastic raw materials into the mold to form a preliminary semi-molten tube blank (preform). Subsequently, compressed air is introduced into the tube blank, and the tube blank is blown up by the gas pressure to make it adhere tightly to the cavity wall of the mold. After a period of cooling and solidification, the formed hollow product is finally obtained.

[0004] This equipment has several remarkable advantages. First, it uses the waste heat of the injection molding process for blow molding, greatly reducing energy consumption and being more energy-efficient than traditional two-step molding equipment. Second, the injection blow hollow molding machine can produce products without flash, without sprue material, with few defects, and with perfect mouth, bottom, and stitch lines, significantly improving product quality. In addition, this equipment also has the characteristics of diverse molding, low scrap rate, high production efficiency, etc., and can greatly reduce production costs and labor costs.

[0005] When the formed blank is blow molded into a plastic product, it is usually necessary to use the automatic demolding mechanism of the injection blow hollow molding machine to separate the blow molded plastic product from the blow molding mold. However, the existing automatic demolding mechanisms for injection blow hollow molding machines can usually only demold plastic products of a single size, cannot set different demolding structures according to different product types, and have different requirements for the demolding mechanism for different products. Summary of the Invention

[0006] The purpose of the present invention is to provide an auxiliary demolding device for an injection blow hollow molding machine to solve the technical problems that the existing demolding mechanisms can usually only demold plastic products of a single size, cannot set different demolding structures according to different product types, and have different requirements for the demolding mechanism for different products.

[0007] The purpose of the present invention can be achieved by the following technical solutions: An auxiliary demoulding device for an injection blow molding machine comprises a main body base, an injection molding machine, a blow molding machine and a demoulding box are sequentially arranged on the upper end of the main body base, the injection molding machine is used to perform injection molding on a product, the blow molding machine blows the injection molded product into a hollow structure, the demoulding box is used to demould the blow molded product, and a molding lower mold for molding the product is arranged on the main body base; and further comprises: A lateral drive, which is fixedly mounted on the main body base along the length direction of the main body base, and is used to drive the molding lower mold to move between the injection molding machine, the blow molding machine and the demoulding box; A demoulding mechanism, which is arranged in the demoulding box and is used to demould the product on the lower molding die; A discharging assembly, which is used to remove the demoulding mechanism and the demoulded product from the demoulding box; The cooling fan is arranged on the demoulding box and is used for cooling and solidifying the molded products in the demoulding box.

[0008] As a further solution of the present invention: the transverse drive includes a transverse guide rail and a transverse rack fixedly arranged on the main base, a transverse slide plate is slidably arranged on the transverse guide rail, a transverse motor is fixedly installed on the transverse slide plate, a transverse gear is fixedly installed on the output shaft of the transverse motor, and the transverse gear is meshingly transmission-connected with the transverse rack.

[0009] As a further solution of the present invention: a feed port is provided on the side of the demolding box close to the blow molding machine, a discharge port is provided on the side of the demolding box away from the blow molding machine, a feed cover is provided on the side of the demolding box with the feed port, and the feed cover is used to control the on and off of the feed port; a discharge cover is provided on the side of the demolding box with the discharge port, and the discharge cover is used to control the on and off of the discharge port.

[0010] As a further solution of the present invention: the discharging assembly includes a discharging bracket and a discharging guide rail, the discharging guide rail is arranged on the inner top surface of the discharging bracket and the demolding box, the discharging guide rail is slidably connected with a discharging slide, the lower end of the discharging slide is fixedly installed with a lifting cylinder, and the output end of the lifting cylinder is fixedly connected with a mounting base plate for detachably installing the demolding mechanism.

[0011] As a further solution of the present invention: the demoulding mechanism includes a quick-release mechanism, and the quick-release mechanism is used to assist in the quick demoulding of the narrow-mouth molded part.

[0012] As a further solution of the present invention: the quick release mechanism comprises: A quick-release seat, which is used to be installed on the discharging assembly, and a quick-release cylinder is fixedly installed therein; A fixed support, which is fixedly connected to the quick-release seat through a quick-release guide sleeve, and a plurality of quick-release rotating plates are rotatably mounted on the fixed support; A quick-release push plate is fixedly installed at the output end of a quick-release air cylinder. A plurality of driving connecting plates are rotatably connected to the quick-release push plate. The number and positions of the driving connecting plates correspond to those of a quick-release rotating plate, and the driving connecting plates are rotatably connected to the quick-release rotating plate.

[0013] As a further scheme of the present invention: The demolding mechanism includes a precision demolding mechanism, which is used for preventing damage and performing precision demolding on a narrow-mouth formed part.

[0014] As a further scheme of the present invention: The precision demolding mechanism includes: A precision demolding base, which is used for being installed on a discharging assembly, and a precision demolding air cylinder is fixedly installed therein; A precision demolding guide sleeve, which is fixedly connected to the precision demolding base, and an air vent guide rod is slidably connected thereto; An airbag, which is fixedly installed on the precision demolding guide sleeve through an airbag fixing ring, and demolds the narrow-mouth formed part by being filled with gas; An air vent seat, which is fixedly connected to the air vent guide rod and is located inside the airbag for inflating and deflating the airbag; An air duct, one end of which is connected to a gas source and the other end is connected to the air vent guide rod.

[0015] As a further scheme of the present invention: The demolding mechanism includes a wide-mouth demolding mechanism, which is used for assisting in demolding a flat-mouth or wide-mouth formed part.

[0016] As a further scheme of the present invention: The wide-mouth demolding mechanism includes: A wide-mouth support, which is used for being installed on a discharging assembly; Inner clamping frames, there are two groups of them and they are slidably installed on the wide-mouth support, and the two groups of inner clamping frames are used for clamping the inner wall of the opening of the formed part; Outer clamping frames, there are two groups of them and they are slidably installed on the wide-mouth support, and the two groups of outer clamping frames are used for clamping the outer wall of the opening of the forming machine.

[0017] The beneficial effects of the present invention: By setting different demolding components, auxiliary demolding of different types of products is realized, effectively improving the demolding efficiency of the products, avoiding damage to the products during the demolding process, and ensuring the forming quality of the products.

[0018] By setting a refrigeration fan to cool the inside of the demolding box, and then quickly cooling the formed part. On the one hand, it effectively ensures that the formed part can be quickly solidified to prevent deformation. On the other hand, improving the cooling efficiency can more quickly demold the forming machine, thereby improving the forming processing efficiency.

[0019] By setting up a quick-release mechanism, rapid and accurate demolding of the narrow-mouth molded parts can be achieved. The opened quick-release rotating plate plays a role in limiting the narrow mouth. Then, the quick-release mechanism is driven upward by a lifting cylinder, and under the action of the opened quick-release rotating plate, the molded parts are quickly demolded from the lower molding die. After demolding is completed, when the molded parts are placed on the discharge table or other positions, the quick-release rotating plate returns to the vertical state and shrinks around the fixed support. Subsequently, they can be taken out from the narrow mouth to complete the auxiliary demolding. The whole auxiliary demolding process is fully automated, and rapid demolding of the molded parts with a narrow-mouth structure can be achieved.

[0020] By setting up a precision demolding mechanism, the auxiliary demolding process is fully automated, rapid demolding of the molded parts with a narrow-mouth structure can be achieved, and the flexible contact of the airbag can effectively protect the molded parts, preventing damage to the molded parts during demolding and meeting the requirements of high-precision products.

[0021] By setting up a wide-mouth demolding mechanism, auxiliary demolding of the molded parts with a wide mouth or flat mouth structure can be carried out to ensure stable and rapid demolding of different types of products. Brief Description of the Drawings

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a three-dimensional structural diagram inside the demolding box of the present invention; Figure 3 is a front view structural diagram inside the demolding box of the present invention; Figure 4 is a schematic structural diagram of the transverse movement drive of the present invention; Figure 5 is a three-dimensional structural diagram of the quick-release mechanism of the present invention in a contracted state; Figure 6 is a three-dimensional structural diagram of the quick-release mechanism of the present invention in an unfolded state; Figure 7 is a schematic structural diagram of the fixed support of the present invention; Figure 8 is a three-dimensional structural diagram of the precision demolding mechanism of the present invention in a contracted state; Figure 9 is a sectional structural diagram of the precision demolding mechanism of the present invention in a contracted state; Figure 10 is a three-dimensional structural diagram of the precision demolding mechanism of the present invention in an unfolded state; Figure 11 is a sectional structural diagram of the precision demolding mechanism of the present invention in an unfolded state; Figure 12 is a schematic assembly structural diagram of the air vent seat of the present invention; Figure 13 It is a schematic three-dimensional structure diagram of the wide-mouth demolding mechanism of the present invention; Figure 14 It is a schematic axonometric structure diagram of the wide-mouth demolding mechanism of the present invention; Figure 15 It is a schematic front view structure diagram of the wide-mouth demolding mechanism of the present invention.

[0024] In the figure: 1, main body base; 2, transverse movement drive; 21, transverse movement guide rail; 22, transverse movement rack; 23, transverse movement slide plate; 24, transverse movement motor; 25, transverse movement gear; 3, forming lower die; 4, injection molding machine; 5, blow molding machine; 6, demolding box; 61, feeding cover; 611, top bracket; 612, top cylinder; 613, lifting guide rail; 614, lifting sealing plate; 615, avoidance groove; 62, discharging cover; 621, flat guide rail; 622, side bracket; 623, side cylinder; 624, side sealing plate; 7, discharging assembly; 71, discharging bracket; 72, discharging guide rail; 73, discharging motor; 74, discharging screw; 75, discharging slide seat; 76, lifting cylinder; 8, demolding mechanism; 81, quick demolding mechanism; 811, quick demolding seat; 812, quick demolding guide sleeve; 813, fixed support; 814, quick demolding push plate; 815, quick demolding cylinder; 816, quick demolding rotating plate; 817, rotating plate support; 818, push plate support; 819, drive connecting plate; 82, precision demolding mechanism; 821, precision demolding base; 822, precision demolding guide sleeve; 8221, sliding guide groove; 823, ventilation guide rod; 824, ventilation seat; 8241, ventilation hole; 825, air duct; 826, precision demolding cylinder; 827, airbag; 828, airbag fixing ring; 83, wide-mouth demolding mechanism; 831, wide-mouth support; 8311, support guide groove; 832, double-headed motor one; 833, outer lead screw; 834, outer lead screw seat; 835, outer clamping frame; 836, double-headed motor two; 837, inner lead screw; 838, inner lead screw seat; 839, inner clamping frame; 9, refrigeration fan. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0026] Embodiment 1: Please refer to Figures 1-4As shown, the present invention is an auxiliary demoulding device for an injection blow molding machine, comprising a main body base 1, an injection molding machine 4, a blow molding machine 5 and a demoulding box 6 are sequentially arranged on the upper end of the main body base 1, the injection molding machine 4 is used to perform injection molding on the product, the blow molding machine 5 blows the injection molded product into a hollow structure, the demoulding box 6 is used to demould the blow molded product, and a molding lower mold 3 for molding the product is arranged on the main body base 1; and further comprising: A lateral drive 2, which is fixedly mounted on the main body base 1 along the length direction of the main body base 1, and is used to drive the molding lower mold 3 to move between the injection molding machine 4, the blow molding machine 5 and the demoulding box 6; Specifically, the transverse drive 2 drives the molding lower mold 3 to perform different types of processing in the injection molding machine 4, the blow molding machine 5 and the demolding box 6 respectively. First, it drives the molding lower mold 3 into the injection molding machine 4, and performs injection molding on the product through the injection molding machine 4. After the product is injection molded, it needs to perform the next step of blow molding. Then, under the action of the transverse drive 2, it enters the blow molding machine 5 for blow molding. When the blow molding is completed, the molded part needs to be taken out. At this time, the transverse drive 2 drives the blow molding machine 5 to enter the demolding box 6, and quickly completes the demolding with the assistance of the demolding mechanism 8. Finally, the molded part is sent out under the action of the discharge component 7.

[0027] Furthermore, the transverse drive 2 includes a transverse guide rail 21 and a transverse rack 22 fixedly arranged on the main base 1, a transverse slide 23 is slidably arranged on the transverse guide rail 21, a transverse motor 24 is fixedly installed on the transverse slide 23, a transverse gear 25 is fixedly installed on the output shaft of the transverse motor 24, and the transverse gear 25 is meshingly connected with the transverse rack 22, and the forming lower mold 3 is installed on the transverse slide 23, and the forming lower mold 3 is driven to move by the transverse slide 23.

[0028] When the molding lower mold 3 needs to be moved laterally, the transverse motor 24 works to drive the transverse gear 25 to rotate, and through the meshing transmission between the transverse gear 25 and the transverse rack 22, the transverse slide 23 is driven to move horizontally along the transverse guide rail 21 to adjust the relative position between the molding lower mold 3 and the injection molding machine 4, the blow molding machine 5 and the demolding box 6.

[0029] A demoulding mechanism 8, which is arranged in the demoulding box 6 and is used to demould the product on the lower molding die 3; Specifically, according to different types of molded parts, different demoulding mechanisms 8 are selected to assist in demoulding, so as to ensure accurate demoulding of different types of molded parts.

[0030] The discharging assembly 7 is used to remove the demoulding mechanism 8 and the demoulded product from the demoulding box 6 .

[0031] Specifically, the discharging assembly 7 includes a discharging support 71 and a discharging guide rail 72. The discharging guide rail 72 is arranged on the inner top surface of the discharging support 71 and the demolding box 6. A discharging sliding seat 75 is slidably connected to the discharging guide rail 72. A lifting cylinder 76 is fixedly installed at the lower end of the discharging sliding seat 75. The output end of the lifting cylinder 76 is fixedly connected to a mounting base plate for detachably installing the demolding mechanism 8.

[0032] Further, it is necessary to drive the sliding of the discharging sliding seat 75. A discharging motor 73 is fixedly installed on the discharging support 71. The output end of the discharging motor 73 is fixedly connected to a discharging screw rod 74. The discharging screw rod 74 is rotatably installed on the side wall of the demolding box 6. The discharging sliding seat 75 is threadedly penetrated and connected to the discharging screw rod 74.

[0033] When the discharging and conveying of the molding machine is required, the discharging motor 73 drives the discharging screw rod 74 to rotate. The discharging screw rod 74, the discharging sliding seat 75 and the discharging guide rail 72 form a lead screw transmission mechanism. The lead screw transmission mechanism drives the discharging sliding seat 75 to reciprocate along the discharging guide rail 72, so as to take out the demolded molded part from the demolding box 6. The staff takes out the molded part from the demolding mechanism 8 or directly puts the molded part onto the discharging conveyor belt to be conveyed to the next process.

[0034] A refrigeration fan 9 is arranged on the demolding box 6 and is used for cooling and solidifying the molded product in the demolding box 6.

[0035] Specifically, when the molded part is sent into the demolding box 6 from the blow molding machine 5 for demolding, since the molding machine has just completed blow molding and the molded part needs to be kept warm during blow molding, directly demolding it at this time is likely to cause its deformation, resulting in non-compliance with the finished product requirements. Therefore, by setting the refrigeration fan 9 to cool the inside of the demolding box 6, and then quickly cooling the molded part. On the one hand, it effectively ensures that the molded part can be quickly solidified to prevent deformation. On the other hand, it improves the cooling efficiency and can demold the molding machine more quickly, thereby improving the molding processing efficiency.

[0036] One side of the demolding box 6 close to the blow molding machine 5 is provided with a feeding port, and the side of the demolding box 6 far from the blow molding machine 5 is provided with a discharging port. A feeding cover 61 is arranged on the side of the demolding box 6 where the feeding port is located. The feeding cover 61 is used to control the on-off of the feeding port. A discharging cover 62 is arranged on the side of the demolding box 6 where the discharging port is located. The discharging cover 62 is used to control the on-off of the discharging port.

[0037] By setting the feeding cover 61 and the discharging cover 62 to control the on-off of the feeding and discharging ports of the demolding box 6, the cold and heat circulation between the demolding box 6 and the outside is effectively isolated, ensuring that the refrigeration fan 9 can quickly cool the molded part and improving the cooling and temperature reduction efficiency of the molded part.

[0038] Specifically, the feeding cover 61 includes a top bracket 611 fixedly arranged on the top of the demolding box 6. A vertically downward top cylinder 612 is fixedly installed on the top bracket 611. The output end of the top cylinder 612 is fixedly connected with a lifting sealing plate 614. A lifting guide rail 613 matched with the lifting sealing plate 614 is arranged on the side wall of the demolding box 6, and the lifting guide rail 613 plays a role of guiding and limiting the lifting and sliding of the lifting sealing plate 614.

[0039] Furthermore, since a transverse movement guide rail 21 and a transverse movement rack 22 are arranged below the feeding port, an avoidance groove 615 for avoiding the transverse movement guide rail 21 and the transverse movement rack 22 is arranged at the lower part of the lifting sealing plate 614, so as to ensure the sealing effect on the feeding port and improve the cooling speed of the molding machine.

[0040] Specifically, there are two groups of discharging covers 62 and they are symmetrically distributed on both sides of the discharging assembly 7. Among them, a side bracket 622 is fixedly installed on the side wall of the demolding box 6. A flat guide rail 621 is fixedly installed below the discharging port. A side cylinder 623 is fixedly installed on the side bracket 622. The output end of the side cylinder 623 is fixedly connected with a side sealing plate 624, and the side sealing plate 624 is slidably connected to the flat guide rail 621.

[0041] Embodiment 2: Since the products processed by the injection blow hollow molding machine are generally hollow bottle structures, and the bottle structures are often narrow-mouth structures, it is necessary to design a demolding assembly that can assist in demolding the bottles with narrow-mouth structures. On the basis of Embodiment 1, the demolding mechanism 8 is specifically designed in this embodiment. Other solutions are the same as those in Embodiment 1, and the difference is that it can quickly assist in demolding the bottles with narrow-mouth structures.

[0042] Please refer to Figure 1 、 Figures 5-7 As shown in the figure, the demolding mechanism 8 includes a quick demolding mechanism 81, and the quick demolding mechanism 81 is used for assisting in quickly demolding the narrow-mouth molded parts.

[0043] Specifically, the quick demolding mechanism 81 includes a quick demolding seat 811, which is used for being installed on the discharging assembly 7, and a quick demolding cylinder 815 is fixedly installed therein; A fixed support 813, which is fixedly connected to the quick demolding seat 811 through a quick demolding guide sleeve 812. A plurality of quick demolding rotating plates 816 are rotatably installed on the fixed support 813; Furthermore, the cross section of the fixed support 813 is a regular polygon, and a rotating plate support 817 for installing the quick demolding rotating plates 816 is arranged on the outer peripheral wall of the fixed support 813.

[0044] The quick-release push plate 814 is fixedly installed at the output end of the quick-release cylinder 815. The structural shape of the quick-release push plate 814 is a geometric reduction of the fixed support 813. A push plate support 818 is fixedly arranged on the outer periphery of the quick-release push plate 814. A plurality of driving connecting plates 819 are rotatably connected to the push plate support 818. The number and positions of the driving connecting plates 819 correspond to those of the quick-release rotating plate 816, and the driving connecting plates 819 are rotatably connected to the quick-release rotating plate 816.

[0045] During the actual demolding process, first, the lower molding die 3 with the molded part moves into the demolding box 6 under the action of the transverse movement drive 2. The refrigeration fan 9 blows in cold air to cool and solidify the molded part. At this time, the quick-release rotating plate 816 is in a vertical state and shrinks outside the fixed support 813, as Figure 5 shown in the state. Subsequently, under the action of the lifting cylinder 76, the quick-release mechanism 81 is driven to move downward, so that the quick-release rotating plate 816 extends from the narrow opening into the hollow part inside the molded part. Then, the quick-release cylinder 815 drives the quick-release push plate 814 to move. The quick-release push plate 814 drives the quick-release rotating plate 816 to rotate outward around the rotating plate support 817 through the driving connecting plate 819 and open, as Figure 6 shown in the state. The opened quick-release rotating plate 816 plays a limiting role on the narrow opening. Then, the lifting cylinder 76 drives the quick-release mechanism 81 to move upward. Under the action of the opened quick-release rotating plate 816, the molded part is quickly demolded from the lower molding die 3. After the demolding is completed, after placing the molded part on the discharge table or other positions, the quick-release rotating plate 816 returns to the vertical state and shrinks outside the fixed support 813. Then, it can be taken out from the narrow opening to complete the auxiliary demolding. The auxiliary demolding process is fully automated, and the quick demolding of the molded part with a narrow opening structure can be realized.

[0046] Embodiment 3: Embodiment 2 can achieve the quick demolding of the narrow-mouth molded part. However, for high-precision products, although the demolding assembly of Embodiment 2 can assist in quick demolding, it is easy to damage the molded part and cannot meet the requirements of high-precision products. Therefore, a demolding assembly is needed that can realize the demolding assistance of the narrow-mouth molded part without damaging the product.

[0047] Please refer to Figure 1 、 Figures 8-12 shown. The demolding mechanism 8 includes a precision demolding mechanism 82, and the precision demolding mechanism 82 is used for anti-damage precision demolding of the narrow-mouth molded part.

[0048] Specifically, the precision demolding mechanism 82 includes a precision demolding base 821 for mounting on the discharging assembly 7, with a precision demolding cylinder 826 fixedly installed therein; a precision demolding guide sleeve 822 fixedly connected to the precision demolding base 821, on which an air vent guide rod 823 is slidably connected; an airbag 827 fixedly installed on the precision demolding guide sleeve 822 through an airbag fixing ring 828, which demolds the narrow-mouth formed part by being filled with gas; an air vent seat 824 fixedly connected to the air vent guide rod 823, which is located inside the airbag 827 for inflating and deflating the airbag 827; and an air duct 825, one end of which is connected to a gas source and the other end is connected to the air vent guide rod 823.

[0049] Furthermore, the side wall of the precision demolding guide sleeve 822 is provided with a sliding guide groove 8221 for the air duct 825 to slide, and a number of air vent holes 8241 distributed in an annular array are provided on the air vent seat 824 to evenly fill the airbag 827 with gas, so that the airbag bulges and adheres to the inside of the formed part.

[0050] During the actual demolding process, first, the lower forming die 3 with the formed part moves into the demolding box 6 under the action of the transverse movement drive 2. The refrigeration fan 9 blows cold air to cool and solidify the formed part. At this time, the precision demolding cylinder 826 drives the air vent seat 824 to move downward, and the airbag 827 is pushed out through the air vent seat 824 to make it in a vertical state as Figure 8 shown. Subsequently, under the action of the lifting cylinder 76, the precision demolding mechanism 82 is driven to move downward, so that the airbag 827 extends from the narrow mouth into the hollow part inside the formed part. Then, the precision demolding cylinder 826 drives the air vent seat 824 to move upward, releasing the pushing-out state of the airbag 827. The gas source inflates the airbag 827 through the air duct 825 and the air vent guide rod 823, so that the airbag 827 bulges and adheres to the inside of the formed part to limit the narrow mouth, as Figure 8 shown. Then, the precision demolding mechanism 82 is driven to move upward by the lifting cylinder 76. Under the action of the bulging airbag 827, the formed part is quickly demolded from the lower forming die 3. When the demolding is completed, after the formed part is placed on the discharging table or other positions, the precision demolding cylinder 826 drives the air vent seat 824 to move downward, and the airbag 827 is pushed out through the air vent seat 824. The airbag 827 returns to the vertical state and contracts, and then it can be taken out from the narrow mouth to complete the auxiliary demolding. The auxiliary demolding process is fully automated, and it can quickly demold the formed part with a narrow-mouth structure. Moreover, the flexible contact of the airbag 827 can effectively protect the formed part and prevent damage to the formed part during demolding, meeting the requirements of high-precision products.

[0051] Embodiment 4: The demolding components of Embodiment 2 and Embodiment 3 solve the demolding of narrow-mouth molded parts. However, the products formed by blow molding not only have narrow-mouth structures, but also molded parts with flat mouths and wide mouths. For such products, the structures of Embodiment 2 or Embodiment 3 cannot achieve good demolding. Therefore, the demolding component proposed in this embodiment can assist in demolding the molded parts with wide mouths or flat mouths, ensuring stable and rapid demolding of different types of products.

[0052] Please refer to Figure 1 、 Figures 13-15 As shown in the figure, the demolding mechanism 8 includes a wide-mouth demolding mechanism 83, and the wide-mouth demolding mechanism 83 is used to assist in demolding the flat-mouth or wide-mouth molded parts.

[0053] Specifically, the wide-mouth demolding mechanism 83 includes a wide-mouth support 831 for mounting on the discharging component 7; two sets of inner clamping frames 839 slidably mounted on the wide-mouth support 831, and the two sets of inner clamping frames 839 are used to clamp the inner wall of the opening of the molded part. Furthermore, the wide-mouth support 831 is provided with a support guide groove 8311 that cooperates with the inner clamping frame 839. A double-headed motor two 836 is fixedly installed on the wide-mouth support 831. Both output ends of the double-headed motor two 836 are fixedly connected with inner lead screws 837. The two inner lead screws 837 have the same thread size and opposite rotation directions. The inner lead screws 837 are rotatably installed on the wide-mouth support 831. Inner lead screw seats 838 are threadedly connected to both inner lead screws 837, and the two sets of inner clamping frames 839 are respectively fixedly connected to the inner lead screw seats 838 on the same side.

[0054] Two sets of outer clamping frames 835 are slidably mounted on the wide-mouth support 831, and the two sets of outer clamping frames 835 are used to clamp the outer wall of the opening of the molding machine.

[0055] Furthermore, the wide-mouth support 831 is provided with a support guide groove 8311 that cooperates with the outer clamping frame 835. A double-headed motor one 832 is fixedly installed on the wide-mouth support 831. Both output ends of the double-headed motor one 832 are fixedly connected with outer lead screws 833. The two outer lead screws 833 have the same thread size and opposite rotation directions. The outer lead screws 833 are rotatably installed on the wide-mouth support 831. Outer lead screw seats 834 are threadedly connected to both outer lead screws 833, and the two sets of outer clamping frames 835 are respectively fixedly connected to the outer lead screw seats 834 on the same side.

[0056] In the actual demolding process, first, the lower molding die 3 with the molded part moves into the demolding box 6 under the action of the transverse movement drive 2. The refrigeration blower 9 blows in cold air to cool down and solidify the molded part. Subsequently, under the action of the lifting cylinder 76, the wide-mouth demolding mechanism 83 moves downward, so that the two groups of inner clamping frames 839 extend into the opening of the molded part. Then, the double-headed motor II 836 drives the two groups of inner lead screws 837 to rotate, and drives the two groups of inner clamping frames 839 to move outward simultaneously through the lead screw transmission principle, pressing the two groups of inner clamping frames 839 against the inner wall of the opening of the molded part. Then, the double-headed motor I 832 drives the outer lead screw 833 to rotate, and drives the two groups of outer clamping frames 835 to move inward simultaneously through the lead screw transmission principle, pressing the two groups of outer clamping frames 835 against the outer wall of the opening of the molded part. And the outer clamping frames 835 and the inner clamping frames 839 on the same side are in the same position. On the one hand, it ensures stable clamping of the molded part to achieve stable demolding. On the other hand, the double-sided pressing can effectively prevent the molded part from deforming and ensure the quality of the molded part.

[0057] The working principle of the present invention: The transverse movement drive 2 drives the lower molding die 3 to perform different types of processing in the injection molding machine 4, blow molding machine 5 and demolding box 6 respectively. First, it drives the lower molding die 3 into the injection molding machine 4, and the injection molding machine 4 injects and molds the product. When the product is injection molded and needs to be further blow molded, then it enters the blow molding machine 5 under the action of the transverse movement drive 2 for blow molding. When the blow molding is completed, the molded part needs to be taken out. At this time, the transverse movement drive 2 drives the blow molding machine 5 into the demolding box 6, and quickly completes demolding with the assistance of the demolding mechanism 8. Finally, the molded part is sent out under the action of the discharging assembly 7.

[0058] The above has described an embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An auxiliary demoulding device for an injection blow molding machine, comprising a main body base (1), an injection molding machine (4), a blow molding machine (5) and a demoulding box (6) being arranged in sequence on the upper end of the main body base (1), the injection molding machine (4) being used for injection molding a product, the blow molding machine (5) being used for blow molding the injection molded product into a hollow structure, the demoulding box (6) being used for demoulding the blow molded product, and a molding lower mold (3) for molding the product being arranged on the main body base (1); characterized in that: Also includes: A lateral drive (2) which is fixedly mounted on the main body base (1) along the length direction of the main body base (1) and is used to drive the lower molding die (3) to move between the injection molding machine (4), the blow molding machine (5) and the demoulding box (6); A demoulding mechanism (8), which is arranged in the demoulding box (6) and is used to demould the product on the molding lower mold (3); A discharge assembly (7) for removing the demoulding mechanism (8) and the demoulded product from the demoulding box (6); A cooling fan (9) is arranged on the demoulding box (6) and is used to cool and solidify the molded product in the demoulding box (6).

2. The auxiliary demoulding device of the injection blow molding machine according to claim 1, characterized in that: The transverse drive (2) comprises a transverse guide rail (21) and a transverse rack (22) fixedly arranged on the main base (1); a transverse slide plate (23) is slidably arranged on the transverse guide rail (21); a transverse motor (24) is fixedly installed on the transverse slide plate (23); a transverse gear (25) is fixedly installed on the output shaft of the transverse motor (24); and the transverse gear (25) is meshingly connected with the transverse rack (22) for transmission.

3. The auxiliary demoulding device of the injection blow molding machine according to claim 1, characterized in that: The demoulding box (6) is provided with a feed port on a side close to the blow molding machine (5), and a discharge port on a side away from the blow molding machine (5). The demoulding box (6) is provided with a feed cover (61) on the side with the feed port, and the feed cover (61) is used to control the opening and closing of the feed port. The demoulding box (6) is provided with a discharge cover (62) on the side with the discharge port, and the discharge cover (62) is used to control the opening and closing of the discharge port.

4. The auxiliary demoulding device of the injection blow molding machine according to claim 1, characterized in that: The discharging assembly (7) comprises a discharging support (71) and a discharging guide rail (72), wherein the discharging guide rail (72) is arranged on the discharging support (71) and the inner top surface of the demoulding box (6), and a discharging slide (75) is slidably connected to the discharging guide rail (72), and a lifting cylinder (76) is fixedly mounted on the lower end of the discharging slide (75), and a mounting base plate for detachably mounting the demoulding mechanism (8) is fixedly connected to the output end of the lifting cylinder (76).

5. An auxiliary demoulding device for an injection blow molding machine according to any one of claims 1 to 4, characterized in that: The demoulding mechanism (8) comprises a quick-release mechanism (81), and the quick-release mechanism (81) is used to assist in the quick demoulding of the narrow-mouth molded part.

6. The auxiliary demoulding device of the injection blow molding machine according to claim 5, characterized in that: The quick release mechanism (81) comprises: A quick-release seat (811) is used for being mounted on the discharging assembly (7), and a quick-release cylinder (815) is fixedly mounted therein; A fixed support (813) fixedly connected to the quick-release seat (811) via a quick-release guide sleeve (812), wherein a plurality of quick-release rotating plates (816) are rotatably mounted on the fixed support (813); A quick-release push plate (814) is fixedly mounted on the output end of the quick-release cylinder (815); a plurality of drive connecting plates (819) are rotatably connected to the quick-release push plate (814); the number and position of the drive connecting plates (819) correspond to the quick-release rotating plate (816); and the drive connecting plates (819) are rotatably connected to the quick-release rotating plate (816).

7. An auxiliary demoulding device for an injection blow molding machine according to any one of claims 1 to 4, characterized in that: The demoulding mechanism (8) comprises a precision demoulding mechanism (82), and the precision demoulding mechanism (82) is used for performing damage-proof precision demoulding on narrow-mouth molded parts.

8. The auxiliary demoulding device of the injection blow molding machine according to claim 7, characterized in that: The precision release mechanism (82) comprises: A precision degassing base (821), which is used to be mounted on the discharging assembly (7), and has a precision degassing cylinder (826) fixedly mounted therein; A precision stripping guide sleeve (822) is fixedly connected to the precision stripping base (821) and has a ventilation guide rod (823) slidably connected thereto; An airbag (827) is fixedly mounted on the precision stripping sleeve (822) via an airbag fixing ring (828) and is filled with gas to demould the narrow-mouth molded part; A vent seat (824) is fixedly connected to the vent guide rod (823) and is located inside the air bag (827) for inflating and deflating the air bag (827); One end of the air guide tube 825 is connected to the air source, and the other end is connected to the ventilation guide rod 823.

9. An auxiliary demoulding device for an injection blow molding machine according to any one of claims 1 to 4, characterized in that: The demoulding mechanism (8) comprises a wide-mouth demoulding mechanism (83), and the wide-mouth demoulding mechanism (83) is used to assist in demoulding a flat-mouth or wide-mouth molded part.

10. The auxiliary demoulding device of the injection blow molding machine according to claim 9, characterized in that: The wide-mouth release mechanism (83) comprises: A wide-mouth support (831) for mounting on the discharge assembly (7); Two sets of inner clamping frames (839) are provided and slidably mounted on the wide-mouth support (831), and the two sets of inner clamping frames (839) are used to clamp the inner wall of the opening of the molded part; The outer clamping frame (835) is provided in two groups and is slidably mounted on the wide-mouth support (831). The two groups of the outer clamping frame (835) are used to clamp the outer wall of the opening of the molding machine.

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