Blow molding mechanism

Abstract

The invention provides a blow molding mechanism, and relates to the technical field of blow molding. The blow molding mechanism comprises a rack; the circulating conveying frame is mounted on the rack; the blow molding machine head is mounted on the circulating conveying frame; the rotating frame is mounted on one side of the rack; the forming mold is mounted on the rotating frame, and is positioned above the blow molding machine head after being mounted; the conveying mechanisms are mounted on the rack, and the conveying mechanisms are arranged corresponding to the blow molding machine head and the forming mold; the heating assembly is communicated with the blow molding machine head and provides heat for the blow molding machine head; the cooling assembly communicates with the forming die and provides a cooling medium for the forming die; the forming die comprises a lifting air cylinder, a mounting plate, two driving air cylinders, a die body, a bottom film, a heat transfer plate and a heat preservation channel. When the equipment disclosed by the invention is used for carrying out blow molding treatment on the parison, the conveying mechanism continuously works and does not stop for waiting, so that the working efficiency of blow molding can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of blow molding, in particular to a blow molding mechanism. Background Art

[0002] Blow molding, also known as hollow blow molding, is a rapidly developing plastic processing method. The tubular plastic preform obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while hot (or heated to a softened state). After the mold is closed, compressed air is immediately introduced into the preform to inflate the plastic preform and make it adhere tightly to the inner wall of the mold. After cooling and demolding, various hollow products are obtained.

[0003] When existing blow molding equipment is used to produce plastic barrels or bottles, the mold is not easy to keep warm, which causes the hot preform to cool and solidify before it is fully formed, resulting in unqualified final products. In addition, the product is not easy to separate from the mold after molding, resulting in a failure to improve work efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a blow molding mechanism. The device is used to blow mold the preform. During the blow molding process, the conveying mechanism works continuously without stopping for waiting, which can improve the work efficiency of the blow molding.

[0005] The technical solution adopted by the present invention is:

[0006] A blow molding mechanism, comprising:

[0007] frame;

[0008] A circulating conveying frame, mounted on the frame;

[0009] A blow molding machine head is mounted on the circulating conveyor frame;

[0010] A rotating frame, mounted on one side of the frame;

[0011] A molding die is installed on the rotating frame and is located above the blow molding machine head after installation;

[0012] A conveying mechanism is installed on the frame, and the conveying mechanism is provided corresponding to the blow molding head and the molding mold;

[0013] A heating component is connected to the blow molding head to provide heat for the blow molding head;

[0014] A cooling component is communicated with the molding die to provide a cooling medium for the molding die;

[0015] Wherein, the molding die comprises:

[0016] A lifting cylinder is mounted on the rotating frame, with its movable end arranged vertically;

[0017] A mounting plate connected to the movable end of the lifting cylinder;

[0018] Two driving cylinders are mounted on the mounting plate, and the piston rods of the two driving cylinders are arranged opposite to each other;

[0019] A mold body is mounted on the movable ends of the two driving cylinders, and grooves are arranged on the opposite side walls of the mold body. A first heat exchange chamber is arranged inside the side walls of the mold body, and the first heat exchange chamber is communicated with the cooling assembly;

[0020] A bottom film is mounted on the mounting plate by driving a telescopic member, and is located above the mold body after being mounted. A second heat exchange chamber is provided on the bottom film, and the second heat exchange chamber is communicated with the cooling assembly;

[0021] A heat transfer plate is arranged in affixed relation to the side wall of the mold groove and the bottom side wall of the bottom film. When the two mold bodies and the bottom film are attached to each other, a mold cavity is formed between the two mold grooves and the bottom of the base. The heat transfer plate has a heat conducting column extending into the first heat exchange chamber and the second heat exchange chamber.

[0022] The heat preservation channel is arranged in the side wall of the mold body and is located at a side away from the heat transfer plate.

[0023] Optionally, the blow molding head comprises:

[0024] A mounting frame, mounted on the circulating conveying frame;

[0025] A driving mechanism is mounted on the mounting frame, and a movable end of the driving mechanism is disposed toward the forming die;

[0026] A blow molding base is installed on the movable end of the driving mechanism, a gas buffer chamber is provided in the blow molding mechanism, and the heating component is provided in the gas buffer chamber;

[0027] A blow molding telescopic rod, installed on a side of the blow molding base facing the molding mold;

[0028] The driving mechanism drives the blow molding base to descend and abut against the conveying mechanism, and the blow molding telescopic rod extends into the molding mold.

[0029] Optionally, an installation chamber is provided in the blow molding base, a heating end of the heating component is installed in the installation chamber, and a thermal insulation felt is provided on the side wall of the blow molding base.

[0030] Optionally, the blow-molded telescopic rod comprises:

[0031] A first rod body is installed in the blow molding base, one end of which is connected to the gas buffer chamber, and the other end is arranged toward the molding mold, and a slide groove is formed between the first rod body and the inner side wall of the blow molding base;

[0032] A second rod body is slidably mounted outside the first rod body and is located in the slide groove, and a plurality of air outlet holes are arranged on a side wall of the second rod body along the axial direction thereof;

[0033] A driving member is installed in the slide groove, and a movable end of the driving member is connected to the second rod body.

[0034] Optionally, the heating component comprises:

[0035] The heating sheet is installed in the blow molding machine head and laid out in sequence along the air outlet direction of the blow molding machine head;

[0036] A temperature sensor is arranged on the inner wall of one end of the air outlet of the blow molding machine head;

[0037] A current regulating switch is separately provided for each layer of the heating plate.

[0038] Optionally, the cooling assembly comprises:

[0039] A cooling box filled with a cooling medium;

[0040] a delivery pipe, one end of which is in communication with the cooling box, and the other end of which is in communication with the first heat exchange chamber and the second heat exchange chamber;

[0041] A delivery pump, installed on the delivery pipe;

[0042] a circulation pipe, one end of which is in communication with the first heat exchange chamber and the second heat exchange chamber, and the other end of which is in communication with the cooling box;

[0043] A refrigerator, installed in the cooling box;

[0044] The temperature sensor is installed in the first heat exchange chamber and the second heat exchange chamber.

[0045] Optionally, the cooling assembly further comprises:

[0046] The auxiliary refrigeration fin is installed in the side wall of the circulation pipeline.

[0047] Optionally, the phantom comprises:

[0048] An outer mold, wherein a mounting groove is provided on the outer mold;

[0049] The inner mold is fixedly arranged in the mounting groove. When the inner mold is fixed in the mounting groove, the insulation channel is formed between the inner mold and the bottom of the heat exchange groove. A heat exchange groove is arranged on the side of the inner mold away from the heat exchange groove mounting groove. The heat transfer plate is installed at the groove of the heat exchange groove. When the heat transfer plate is installed, the first heat exchange chamber is formed between the heat transfer plate and the heat exchange groove.

[0050] Optionally, the inner mold and the heat transfer plate are made of the same material.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] 1. This equipment is used to blow mold the preform. During the blow molding process, the conveying mechanism works continuously without stopping for waiting, which can improve the work efficiency of blow molding.

[0053] 2. The heating component is set in the blow molding machine head to avoid the appearance of defective products during the blow molding process due to insufficient heat.

[0054] 3. The molding die is connected to the refrigeration component to improve the cooling efficiency after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 It is a schematic diagram of the overall structure of the blow molding mechanism.

[0057] Figure 2 It is a schematic diagram of the partial three-dimensional structure of the blow molding mechanism.

[0058] Figure 3 It is a schematic diagram of the partial structure of the molding die of the blow molding mechanism.

[0059] Figure 4 It is a schematic diagram of the mold body structure of the forming mold of the blow molding mechanism.

[0060] Figure 5 It is a schematic diagram of the structure of the blow molding base of the blow molding mechanism.

[0061] Figure 6 It is a schematic structural diagram of another embodiment of a blow molding base of a blow molding mechanism.

[0062] Figure 7 It is a schematic diagram of the structure of the cooling component of the blow molding mechanism.

[0063] Reference numerals:

[0064] 1. Frame;

[0065] 2. Circulation conveyor rack;

[0066] 3. Blow molding machine head; 31. Mounting frame; 32. Driving mechanism; 33. Blow molding base; 34. Gas buffer chamber; 35. Blow molding telescopic rod; 351. First rod body; 352. Second rod body; 353. Air outlet; 354. Driving member; 36. Mounting chamber; 37. Insulation felt;

[0067] 4. Rotating frame;

[0068] 5. Molding mold; 51. Lifting cylinder; 52. Mounting plate; 53. Driving cylinder; 54. Mold body; 541. Outer mold; 542. Mounting groove; 543. Inner mold; 544. Heat exchange groove; 55. Forming groove; 56. First heat exchange chamber; 57. Bottom film; 58. Second heat exchange chamber; 59. Heat transfer plate; 510. Mold cavity; 520. Heat conducting column; 530. Insulation channel;

[0069] 6. Conveying mechanism;

[0070] 7. Heating component; 71. Heating plate; 72. Temperature sensor; 73. Current regulating switch;

[0071] 8. Cooling assembly; 81. Cooling box; 82. Delivery pipe; 83. Delivery pump; 84. Circulation pipe; 85. Refrigerator; 86. Temperature sensor; 87. Auxiliary refrigeration plate. DETAILED DESCRIPTION

[0072] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0073] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0075] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0077] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0078] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0079] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a blow molding mechanism, including: a frame 1, a circulating conveying frame 2, a blow molding head 3, a rotating frame 4, a molding mold 5, a conveying mechanism 6, a heating component 7 and a cooling component 8. The circulating conveying frame 2 is mounted on the frame 1. The blow molding head 3 is mounted on the circulating conveying frame 2. The rotating frame 4 is mounted on one side of the frame 1, and the molding mold 5 is mounted on the rotating frame 4, which is located above the blow molding head 3 after installation. The conveying mechanism 6 is mounted on the frame 1, and the corresponding blow molding head 3 and the molding mold 5 are both provided with a conveying mechanism 6. More specifically, one of the conveying mechanisms 6 is located above the blow molding head 3, so that the blow molding head 3 can be extended into the parison. The other conveying mechanism 6 is located below the molding mold 5, so that the molding mold 5 can fix the parison on the conveying mechanism 6 in the mold cavity 510. The heating component 7 is connected to the blow molding head 3 for auxiliary heating of the gas entering the blow molding head 3. The cooling component 8 is connected to the molding mold 5, so that the molding mold 5 can be quickly demolded after blow molding.

[0080] When in use, the preform is placed on the conveying mechanism 6, and is conveyed to one end of the discharge port by the conveying mechanism 6, so that the preform falls onto the blow molding head 3, and then is conveyed to one side of the forming mold 5 under the action of the circulating conveyor frame 2. The forming mold 5 wraps the preform, and then the blow molding head 3 works to blow the preform into shape. During the blow molding process, a part of the blow molding head 3 gradually extends into the bottom of the preform, so that the preform is quickly formed. After the molding process, the blow molding head 3 slowly withdraws from the forming mold 5, and then the forming mold 5 places the formed bottle on another conveying mechanism 6.

[0081] It should be noted that the conveying mechanism 6 is of existing design, and its specific structure, installation method, and working principle are not described in detail here. The circulating conveying frame 2 and the rotating frame 4 have the same structure, both of which are annular conveying frames in existing designs, and their specific structure, installation method, and working principle are not described in detail here.

[0082] More specifically, if Figure 3As shown, the molding die 5 comprises: a lifting cylinder 51, a mounting plate 52, two driving cylinders 53, a mold body 54, a bottom film 57, a heat transfer plate 59 and a heat preservation channel 530. The lifting cylinder 51 is mounted on the rotating frame 4, and its movable end is vertically arranged. The mounting plate 52 is connected to the movable end of the lifting cylinder 51. The two driving cylinders 53 are mounted on the mounting plate 52, and the piston rods of the driving cylinders 53 are arranged opposite to each other after the installation. The mold body 54 is connected to the movable end of the driving cylinder 53, and the opposite side walls of the two mold bodies 54 are provided with a groove 55. The side wall of the mold body 54 is provided with a first heat exchange chamber 56, and the first heat exchange chamber 56 is connected to the cooling assembly 8. The bottom film 57 is mounted on the mounting plate 52 through a driving telescopic member, and is located above the mold body 54 after installation. The bottom film 57 is provided with a second heat exchange chamber 58, and the second heat exchange chamber 58 is connected to the cooling assembly 8. The heat transfer plate 59 is laminated in the side wall of the mold groove 55 and on the bottom side wall of the bottom film 57. When the two mold bodies 54 and the bottom film 57 are laminated to each other, a mold cavity 510 is formed between the two mold grooves 55 and the bottom of the base. The heat transfer plate 59 has a heat-conducting column 520 extending into the first heat exchange chamber 56 and the second heat exchange chamber 58. The heat preservation channel 530 is disposed in the side wall of the mold body 54 and is located on the side away from the heat transfer plate 59.

[0083] When in use, first, the lifting cylinder 51 drives the mounting plate 52 to move downward, so that the preform is located directly below the bottom film 57 and between the two mold bodies 54. The two driving cylinders 53 and the driving telescopic member drive the mold body 54 and the bottom film 57 to fit each other. After fitting, the preform is completely wrapped in the mold cavity 510, and then the blow molding head 3 provides hot air to the preform, so that the preform is formed according to the shape of the mold cavity 510. After molding, the cooling component 8 provides cooling medium to the first heat exchange chamber 56 and the second heat exchange chamber 58, so that the formed bottle or barrel is quickly separated from the mold body 54 and the bottom film 57. When the molding mold 5 is transported to the top of another conveying mechanism 6 by the rotating frame 4, the lifting cylinder 51 drives the mounting plate 52 to move downward. During the downward movement, the driving cylinder 53 and the driving telescopic member move to place the bottle or barrel on the conveying mechanism 6. The conveying mechanism 6 conveys the bottle or barrel to a specified position according to the subsequent process. Completing the blow molding of the preform during the conveying process can effectively improve production efficiency. The heat preservation channel 530 is provided in the side wall of the mold body 54 in order to reduce the energy consumption of the cooling assembly 8 .

[0084] In one embodiment, if Figure 5 and Figure 6As shown, the blow molding head 3 includes: a mounting frame 31, a driving mechanism 32, a blow molding base 33 and a blow molding telescopic rod 35. The mounting frame 31 is mounted on the circulating conveying frame 2. The driving mechanism 32 is mounted on the mounting frame 31, and the movable end of the driving mechanism 32 is arranged toward the forming mold 5. The blow molding base 33 is mounted on the movable end of the driving mechanism 32, and a gas buffer chamber 34 is arranged in the blow molding mechanism, and the heating component 7 is arranged in the gas buffer chamber 34. The blow molding telescopic rod 35 is mounted on the side of the blow molding base 33 facing the forming mold 5. Among them, the driving mechanism 32 drives the blow molding base 33 to rise, so that the blow molding telescopic rod 35 extends into the preform, and then drives it to continue to rise, so that the preform is wrapped by the forming mold 5, and then the gas in the blow molding base 33 is heated by the heating component and sent into the preform through the blow molding telescopic rod 35, and the preform is blown into a specified shape under the action of the gas.

[0085] It should be noted that a plurality of blow molding machine heads 3 are arranged on the circulating conveying frame 2, and each blow molding mechanism is individually provided with a compressed air supply component, which has a heating function. Since part of the heat of the gas will be lost during the conveying process, a heating component is arranged in the gas buffer chamber, and secondary heating is performed by the heating component so that the heat of the gas meets the temperature during blow molding.

[0086] In one embodiment, if Figure 6 As shown, a mounting chamber 36 is provided in the blow molding base 33 , a heating end of the heating component 7 is installed in the mounting chamber 36 , and a heat-insulating felt 37 is provided on the side wall of the blow molding base 33 .

[0087] In order to facilitate the installation of the heating component 7, an installation chamber 36 is provided in the blow molding base 33, and the heating end of the heating component 7 is installed in the installation chamber 36. To avoid the rapid flow of heat, a heat-insulating felt 37 is wrapped around the side wall of the blow molding base 33.

[0088] In one embodiment, if Figure 5 and Figure 6 As shown, the blow molding telescopic rod 35 includes: a first rod body 351, a second rod body 352 and a driving member 354. The first rod body 351 is installed in the blow molding base 33, one end of which is connected to the gas buffer chamber 34, and the other end is arranged toward the molding mold 5, and a slide groove is formed between the first rod body 351 and the inner side wall of the blow molding base 33. The second rod body 352 is slidably installed on the first rod body 351 and is located in the slide groove. A plurality of air outlet holes 353 are arranged on the side wall of the second rod body 352 along the axial direction thereof. The driving member 354 is installed in the slide groove, and the movable end of the driving member 354 is connected to the second rod body 352.

[0089] When in use, the driving member 354 drives the second rod 352 to slide along the outer wall of the first rod 351, so that the second rod 352 extends into the parison and slowly moves toward the bottom end of the parison according to the progress of the blow molding process. After the blow molding is completed, the second rod 352 is driven by the driving member 354 and the driving mechanism 32 to exit the molding mold 5.

[0090] In one embodiment, if Figure 6 As shown, the heating component 7 includes: a heating plate 71, a temperature sensor 72 and a current regulating switch 73. The heating plate 71 is installed on the side wall of the gas buffer chamber 34 of the blow molding base 33 and is laid in sequence along the flow direction of the gas. The temperature sensor 72 is installed on the inner wall of the outlet gas end of the blow molding telescopic rod 35. The current regulating switch 73 is installed on the blow molding base 33, and each layer of the heating plate 71 is individually provided with a current regulating switch 73.

[0091] When heating is in progress, the current regulating switch 73 is controlled to be in a normal working state. When the temperature in the gas buffer chamber 34 rises, the current regulating switch 73 is controlled to adjust the current to achieve the purpose of saving energy. When the temperature sensor 72 detects that the temperature at the outlet of the blow molding telescopic rod 35 is lower than the preset minimum value, the current regulating switch 73 is controlled to adjust the current to meet the heating power of the heating plate 71.

[0092] In the specific implementation process, in order to further save energy, when the temperature in the gas buffer chamber 34 reaches a preset maximum value, the power of the heating plate that can control the gas flow direction is reduced in sequence.

[0093] In one embodiment, if Figure 1 and Figure 7As shown, the cooling assembly 8 includes: a cooling box 81, a delivery pipe 82, a delivery pump 83, a circulation pipe 84, a refrigerator 85 and a temperature sensor 86. The cooling box 81 is filled with a cooling medium. The delivery pipe 82 connects the cooling box 81 with the first heat exchange chamber 56 and the second heat exchange chamber 58. The delivery pump 83 is installed on the delivery pipe 82, and is used to transport the cooling medium in the cooling box 81 to the delivery pipe 82, and then send it into the first heat exchange chamber 56 and the second heat exchange chamber 58 through the delivery pipe 82. The first heat exchange chamber 56 and the second heat exchange chamber 58 are connected to the cooling box 81 through the circulation pipe 84, so that the used cooling medium can be sent into the cooling box 81 for cooling. The used cooling medium is cooled by the refrigerator 85 in the cooling box 81, so that its temperature is within a preset range. During use, if the temperature sensor 86 installed in the first heat exchange chamber 56 and the second heat exchange chamber 58 detects that the temperature is higher than the preset maximum value, the problem is solved by accelerating the circulation of the cooling medium through the delivery pump 83. Or the minimum refrigeration temperature of the refrigerator 85 is adjusted to reduce the temperature of the cooling medium to a lower level, so that the temperature in the first heat exchange chamber 56 and the second heat exchange chamber 58 can be controlled.

[0094] It should be noted that during the operation of the equipment, the cooling box 81 rotates at the same speed and direction as the rotating frame 4 on which the molding die 5 is mounted, so as to avoid the problem of tangling of the delivery pipe 82 and the circulation pipe 84 during use. Both the delivery pipe 82 and the circulation pipe 84 are hoses, so that they can be used in different lengths during the rotation process.

[0095] In one embodiment, if Figure 7 As shown, in order to make the cooling medium reach the temperature that can be used for the next cycle more quickly, the cooling assembly 8 further includes: auxiliary cooling fins 87, and the auxiliary cooling fins 87 are installed in the side wall of the circulation pipe 84.

[0096] In one embodiment, if Figure 4 As shown, the mold body 54 includes: an outer mold 541 and an inner mold 543. The outer mold 541 is provided with a mounting groove 542. The inner mold 543 is fixedly arranged in the mounting groove 542. When the inner mold 543 is fixed in the mounting groove 542, the heat preservation channel 530 is formed between the inner mold 543 and the bottom of the heat exchange groove 544. The inner mold 543 is provided with a heat exchange groove 544 on the side away from the mounting groove 542 of the heat exchange groove 544. The heat transfer plate 59 is installed at the notch of the heat exchange groove 544. When the heat transfer plate 59 is installed, the first heat exchange chamber 56 is formed between the heat transfer plate 59 and the heat exchange groove 544. The inner mold 543 and the heat transfer plate 59 are made of the same material.

[0097] When in use, in order to reduce the cost of the mold body 54, the mold body 54 is set to two parts, and the outer mold 541 and the inner mold 543 are made of different materials. The inner mold 543 is mainly made of materials with good thermal conductivity to facilitate heat transfer to the cooling medium.

[0098] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A blow molding mechanism, characterized in that: include: frame; A circulating conveying frame, mounted on the frame; A blow molding machine head is mounted on the circulating conveyor frame; A rotating frame, mounted on one side of the frame; A molding die is installed on the rotating frame and is located above the blow molding machine head after installation; A conveying mechanism is installed on the frame, and the conveying mechanism is provided corresponding to the blow molding head and the molding mold; A heating component is connected to the blow molding head to provide heat for the blow molding head; A cooling component is communicated with the molding die to provide a cooling medium for the molding die; Wherein, the molding die comprises: A lifting cylinder is mounted on the rotating frame, with its movable end arranged vertically; A mounting plate connected to the movable end of the lifting cylinder; Two driving cylinders are mounted on the mounting plate, and the piston rods of the two driving cylinders are arranged opposite to each other; A mold body is mounted on the movable ends of the two driving cylinders, and grooves are arranged on the opposite side walls of the mold body. A first heat exchange chamber is arranged inside the side walls of the mold body, and the first heat exchange chamber is communicated with the cooling assembly; A bottom film is mounted on the mounting plate by driving a telescopic member, and is located above the mold body after being mounted. A second heat exchange chamber is provided on the bottom film, and the second heat exchange chamber is communicated with the cooling assembly; A heat transfer plate is arranged in affixed relation to the side wall of the mold groove and the bottom side wall of the bottom film. When the two mold bodies and the bottom film are attached to each other, a mold cavity is formed between the two mold grooves and the bottom of the base. The heat transfer plate has a heat conducting column extending into the first heat exchange chamber and the second heat exchange chamber. The heat preservation channel is arranged in the side wall of the mold body and is located at a side away from the heat transfer plate.

2. The blow molding mechanism according to claim 1, characterized in that: The blow molding head comprises: A mounting frame, mounted on the circulating conveying frame; A driving mechanism is mounted on the mounting frame, and a movable end of the driving mechanism is disposed toward the forming die; A blow molding base is installed on the movable end of the driving mechanism, a gas buffer chamber is provided in the blow molding mechanism, and the heating component is provided in the gas buffer chamber; A blow molding telescopic rod, installed on a side of the blow molding base facing the molding mold; The driving mechanism drives the blow molding base to descend and abut against the conveying mechanism, and the blow molding telescopic rod extends into the molding mold.

3. The blow molding mechanism according to claim 2, characterized in that: An installation chamber is arranged in the blow molding base, a heating end of the heating component is installed in the installation chamber, and a heat-insulating felt is arranged on the side wall of the blow molding base.

4. The blow molding mechanism according to claim 2, characterized in that: The blow-molded telescopic rod comprises: A first rod body is installed in the blow molding base, one end of which is connected to the gas buffer chamber, and the other end is arranged toward the molding mold, and a slide groove is formed between the first rod body and the inner side wall of the blow molding base; A second rod body is slidably mounted outside the first rod body and is located in the slide groove, and a plurality of air outlet holes are arranged on a side wall of the second rod body along the axial direction thereof; A driving member is installed in the slide groove, and a movable end of the driving member is connected to the second rod body.

5. The blow molding mechanism according to claim 1, characterized in that: The heating component comprises: The heating sheet is installed in the blow molding machine head and laid out in sequence along the air outlet direction of the blow molding machine head; A temperature sensor is arranged on the inner wall of one end of the air outlet of the blow molding machine head; A current regulating switch is separately provided for each layer of the heating plate.

6. The blow molding mechanism according to claim 1, characterized in that: The cooling assembly comprises: A cooling box filled with a cooling medium; a delivery pipe, one end of which is in communication with the cooling box, and the other end of which is in communication with the first heat exchange chamber and the second heat exchange chamber; A delivery pump, installed on the delivery pipe; a circulation pipe, one end of which is in communication with the first heat exchange chamber and the second heat exchange chamber, and the other end of which is in communication with the cooling box; A refrigerator, installed in the cooling box; The temperature sensor is installed in the first heat exchange chamber and the second heat exchange chamber.

7. The blow molding mechanism according to claim 6, characterized in that: The cooling assembly further comprises: The auxiliary refrigeration fin is installed in the side wall of the circulation pipeline.

8. The blow molding mechanism according to claim 1, characterized in that: The phantom comprises: An outer mold, wherein a mounting groove is provided on the outer mold; The inner mold is fixedly arranged in the mounting groove. When the inner mold is fixed in the mounting groove, the insulation channel is formed between the inner mold and the bottom of the heat exchange groove. A heat exchange groove is arranged on the side of the inner mold away from the heat exchange groove mounting groove. The heat transfer plate is installed at the groove of the heat exchange groove. When the heat transfer plate is installed, the first heat exchange chamber is formed between the heat transfer plate and the heat exchange groove.

9. The blow molding mechanism according to claim 8, characterized in that: The inner mold and the heat transfer plate are made of the same material.

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