Temperature-controlled bottle blowing mold and temperature-controlled bottle blowing system

Abstract

The present invention relates to the technical field of bottle blowing machines, and in particular to a temperature-controlled bottle blowing mold and a temperature-controlled bottle blowing system, comprising a preform injection molding station and a transfer mechanism, wherein the preform injection molding station comprises a sol injection molding system and a preform mold, wherein an injection cavity is arranged in the preform mold, and a split mold structure is provided along the axis of the injection cavity; the transfer mechanism is located above the preform injection molding station, and is provided with a rotation positioning system, wherein the transfer mechanism is provided with a preform injection molding station, a temperature-adjusting pre-blowing station, a bottle blowing molding station, and a bottle removing station in sequence along the transfer direction relative to the preform injection molding station, and the preform can be transferred in sequence along the temperature-adjusting pre-blowing station, the bottle blowing molding station, and the bottle removing station through the rotation positioning system after being formed by the preform injection molding station, and an air blowing device is provided below the transfer mechanism, wherein the air blowing device is provided with a matching mold for the preform, and the air blowing device is provided with an injection core relative to the preform injection molding station, and the injection core is provided in the injection cavity. The present invention aims to reduce the defective rate of bottles while efficiently blowing bottles.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing machines, and in particular to a temperature-controlled bottle blowing mold and a temperature-controlled bottle blowing system. Background Art

[0002] Blow molding, also known as hollow blow molding, is a method of quickly processing plastic bottles. With the development of industry, this technology is also developing rapidly. Among them, the bottle blowing machine is one of the commonly used processing equipment in blow molding processing and production. It consists of several major functional blocks such as extruder, die head, clamping mechanism and blowing system. The extruder and die head are used to shape the bottle embryo, and the bottle embryo is transferred by the clamping mechanism, and the bottle embryo can be blown into the final product by using the blowing system.

[0003] In the related art, a preform is obtained by shaping through an extruder and a die head, and a collecting structure clamps the bottle mouth of the preform. The collecting structure is provided with a cold air duct and is arranged facing the preform. The cooled preform is transferred to the adjusting structure by a transmission mechanism. The adjusting structure can adjust the direction of the preform, and the preform is passed through a preheating chamber and then sent into a blowing chamber for blowing. However, the above structure is too complicated, and if the thickness of the bottle mouth and the bottle body to be shaped are different, this processing method is likely to result in uneven thickness of the finished product during blowing, resulting in defective products. Summary of the invention

[0004] The main purpose of the present invention is to provide a temperature-controlled bottle blowing mold, which aims to reduce the defective rate of bottles while efficiently blowing bottles.

[0005] To achieve the above-mentioned purpose, the present invention proposes a temperature-controlled bottle blowing mold, comprising a preform injection molding station and a transfer mechanism:

[0006] The preform injection molding station comprises a sol injection molding system and a preform mold, wherein an injection cavity is provided in the preform mold, a hanging ring mold is provided between the sol injection molding system and the preform mold, the sol injection molding system is connected to the preform mold through the hanging ring mold, and the preform mold is provided with a split mold structure along the axis of the injection cavity;

[0007] The transfer mechanism is located above the preform injection molding station and is provided with a rotation positioning system. The transfer mechanism is provided with a preform injection molding station, a temperature adjustment pre-blowing station, a bottle blowing molding station, and a bottle removing station in sequence along the transfer direction relative to the preform injection molding station. Through the rotation positioning system, the preform can be transferred along the temperature adjustment pre-blowing station, the bottle blowing molding station, and the bottle removing station in sequence after being molded by the preform injection molding station. A blowing device is provided below the transfer mechanism, and the blowing device is provided with a matching mold for the preform. The blowing device is provided with an injection core relative to the preform injection molding station, and the injection core is penetrated into the injection cavity.

[0008] In one embodiment of the present application, the sol injection molding system includes two groups of main channels arranged opposite to each other. In the flow channel plate, the two groups of main channels flow into branch channels in opposite directions and pass through the bottle embryo mold. One end of the branch channel is connected to the injection cavity, and the other end is connected to the main channel. The branch channel is connected to a hanging ring mold, and the pipe diameters of the two groups of main channels gradually decrease along the direction approaching the injection cavity.

[0009] In one embodiment of the present application, the injection cavity includes a first mouth mold and a embryo body mold, the first mouth mold is connected to the embryo body mold, and a first clamping portion is provided relative to the embryo body mold, the first clamping portion is connected to an end of the first mouth mold away from the transfer mechanism, and extends outward along the diameter direction of the first mouth mold, the first clamping portion is wrapped around the first mouth mold, and is connected to the embryo body mold.

[0010] In one embodiment of the present application, the preform injection molding stations are provided in a plurality of groups, and the plurality of groups of the preform injection molding stations are arranged side by side along the mold splitting structure. The blowing devices are provided in a plurality of groups, and each of the blowing devices corresponds to one of the preform injection molding stations.

[0011] In one embodiment of the present application, the injection core is used to extend into the bottle embryo mold and clamped with the inner wall of the embryo body mold to form a embryo body molding gap, a sliding cavity is provided in the injection core, an open portion is provided at one end of the sliding cavity facing the bottle embryo mold, a sealing rod is slidably connected in the sliding cavity, the sealing rod abuts against the open portion, a pneumatic cavity is provided at the periphery of the sliding cavity, and the pneumatic cavity is connected to one end of the sliding cavity close to the open portion.

[0012] In one embodiment of the present application, a plurality of temperature-adjusting pre-blowing stations are arranged side by side, and each of the preform injection molding stations corresponds to a group of temperature-adjusting pre-blowing stations, and the temperature-adjusting pre-blowing stations include a preforming mold and a temperature control component, and the temperature control component is wrapped around the preforming mold. The preforming mold is divided into two corresponding modules by a split mold structure, and when the two modules are molded together, a preforming cavity is enclosed and formed, and the preforming cavity is provided with a second die and a second clamping portion, and the cavity body of the preforming cavity is connected to an end of the second clamping portion away from the second die, and is wrapped around the second clamping portion.

[0013] In one embodiment of the present application, the temperature control component is connected to the second die, the temperature control component is penetrated through the outer wall of the preform mold, and is coiled and covered on the outer wall of the preform mold at a position away from the parting structure. Two groups of the temperature control components are provided relative to the parting structure, and the two groups of the temperature control components are wrapped around the preform cavity.

[0014] In one embodiment of the present application, the blowing device is provided with a heating core rod facing the temperature-adjusting pre-blowing station, the heating core rod is penetrated through the pre-forming cavity, a peripheral array of the heating core rod is provided with a plurality of air holes, the air holes are arranged facing the inner wall of the pre-forming cavity, and a flexible protective end is provided at one end of the heating core rod away from the blowing device, and the flexible protective end is used to abut against the bottom of the bottle embryo when the heating core rod is inserted into the pre-forming cavity.

[0015] In one embodiment of the present application, the molding station is divided into two corresponding modules by a split mold structure. When the two modules are molded together, a bottle blowing cavity is enclosed and formed. The bottle blowing cavity is provided with a third die and a third clamping portion. A cooling component is penetrated through the outer wall of the molding station. The cooling component is connected to the third die, and the cooling component is wrapped around the bottle blowing cavity.

[0016] To achieve the above object, the present invention proposes a temperature-controlled bottle blowing system, including the above-mentioned temperature-controlled bottle blowing mold, and the temperature-controlled bottle blowing system includes a preform molding module, a pre-blowing module, and a molding module:

[0017] The preform molding module is used for injection molding of the preform, and includes a first die installed on the transfer mechanism, an injection core extending into the injection cavity and cooperating with the first die to mold a bottle mouth, and a bottle preform with a uniform inner diameter of the bottle body is molded by the cooperation of the first clamping portion, the injection core and the preform body mold;

[0018] The pre-blowing module is used to receive the preform delivered by the transfer mechanism. The pre-forming cavity of the pre-forming mold is provided with a second die with the same structure. The second die and the second clamping part can fix the preform by clamping the bottle mouth end of the preform after the pre-forming mold is closed. The temperature control component can maintain the temperature of the preform, and the preform is pressed against the preform by heating the core rod and blowing air to pre-blow out the preformed bottle body.

[0019] The forming module is used to receive the preformed bottle embryo, and the preformed bottle is clamped by the third die. The inner wall of the forming module is provided with a cooling component. The air outlet of the blowing device blows air, and the body of the preformed bottle expands and contacts the inner wall of the forming station. After contacting the cooling component, it is cooled and shaped to obtain a bottle.

[0020] The technical solution of the present invention adopts the structure that the temperature-controlled bottle blowing mold is divided into a bottle blowing machine platform, a transfer mechanism, a preform injection molding station, a temperature-adjusting pre-blowing station, a molding station and a material unloading station. Each mechanism and station is installed on the platform. The preform injection molding station includes a sol injection molding system and a preform mold. The sol injection molding system is connected to the platform and can introduce molten bottle raw materials into the preform mold for injection molding to obtain a preform. An injection cavity is provided in the preform mold, and the preform is molded in the injection cavity. A hanging ring mold is provided between the sol injection molding system and the preform mold, which can be used to discharge the gas in the injection cavity into the cavity during the injection molding process, so that the preform quality is higher. At the same time, excess waste can form a group of hanging rings here, and the hanging rings are connected to the preform mold to obtain a hanging ring-integrated preform. The tail of the preform has a vertical The lifting ring is perpendicular to the preform, which can make the preform more convenient to transport between machines, and can be directly cut off as waste after being delivered to the designated location, which can effectively improve product quality. The preform is provided with a split mold structure along the central axis of the injection cavity. The split mold structure divides the preform mold into two independent molds. The structures of the two molds correspond to each other and can be opened and closed by a hydraulic cylinder. The main body of the transfer mechanism includes a set of transfer turntables. The turntable is provided with a blowing device facing each processing station, which can blow air into the preform to expand it to obtain a product. The transfer mechanism is located above each station. The overall support shaft of the transfer mechanism can be designed with a lifting structure. Of course, the blowing device can also be designed with a lifting structure to achieve the docking of the blowing device and the preform mold. When the blowing device and the preform mold are connected, the blowing device and the preform mold are connected. After the docking is completed, the two will be clamped together to form a bottle mouth forming mold with a bottle preform. The bottle mouth and bottleneck of the bottle preform are formed at the first die position, and each station is equipped with the same die. After the bottle mouth is formed on the bottle preform mold by the first die, the dies of other stations can form a clamping structure for grabbing the bottle preform. The blowing device is provided with an injection core relative to the bottle preform injection molding station. The injection core is penetrated in the injection cavity and forms a gap for molding, so that the bottle preform can be obtained more easily and the quality of the bottle preform is improved. A temperature-adjusting pre-blowing station is also provided on the turntable along the transfer direction. The temperature-adjusting pre-blowing station includes a preforming mold and a temperature control component. The temperature control component is wrapped around the preforming mold, which can keep the temperature of the bottle preform reaching the pre-blowing temperature while assisting in blowing the bottle preform into a pre-blown preform, which can effectively avoid the bottle preform. The body of the preform suddenly becomes thinner during the bottle blowing process, while the bottle mouth has already been shaped, resulting in damage to the bottle. By pre-blowing the bottle, the preform can be made to be close to the style of the finished product, which can reduce the damage to the preform and reduce the defective rate. The turntable is also provided with a molding station and a feeding station in sequence along the transfer direction. The former is used to blow the pre-blown bottle to obtain the finished product, and the latter is used to feed the preform. The transfer mechanism uses the turntable to reciprocate along 90°, that is, the blowing device corresponding to the core injection reciprocates between the preform injection molding station and the temperature adjustment pre-blowing station. The core injection assists the injection molding of the preform and can assist in the transfer of the preform. In this way, the blowing device on the temperature adjustment pre-blowing station can be designed with other structures. The above structure can efficiently blow the bottle while reducing the defective rate of the bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the temperature-controlled bottle blowing mold of the present invention;

[0023] Figure 2 It is a schematic structural diagram of an angled cross-sectional view of the temperature-controlled bottle blowing mold of the present invention;

[0024] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0025] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0026] Figure 5 It is a schematic structural diagram of a cross-sectional view from another angle of the temperature-controlled bottle blowing mold of the present invention;

[0027] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0028] Figure 7 It is a schematic diagram of the structure of the preforming mold of the temperature-controlled bottle blowing mold of the present invention;

[0029] Figure 8 It is a schematic structural diagram of the temperature-controlled bottle blowing system of the present invention.

[0030] Description of Figure Numbers:

[0031] 1. Preform injection molding station; 2. Sol injection molding system; 21. Main flow channel; 22. Branch flow channel; 23. Hanging ring mold; 3. Preform mold; 31. Injection cavity; 32. First die; 33. First clamping part; 34. Preform body mold; 4. Transfer mechanism; 41. Blowing device; 5. Injection core; 51. Sliding cavity; 52. Open part; 53. Sealing rod; 54. Pneumatic cavity; 6. Heating core rod; 61. Air hole; 62. Flexible protective end; 7. Temperature adjustment pre-blowing station; 71. Preform mold; 72. Preform cavity; 73. Temperature control component; 8. Molding station; 81. Bottle blowing cavity; 82. Cooling component; 9. Unloading station.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] To solve the problems in the background technology, such as Figures 1 to 7 As shown, a temperature-controlled bottle blowing mold proposed by the present invention comprises a preform injection molding station 1 and a transfer mechanism 4. The preform injection molding station 1 comprises a sol injection molding system 2 and a preform mold 3. An injection cavity 31 is arranged in the preform mold 3. A hanging ring mold 23 is arranged between the sol injection molding system 2 and the preform mold 3. The sol injection molding system 2 is connected to the preform mold 3 through the hanging ring mold 23. The preform mold 3 is provided with a split mold structure along the axis of the injection cavity 31. The transfer mechanism 4 is located above the preform injection molding station 1 and is provided with a rotation positioning system. The transfer mechanism 4 is arranged on the preform injection molding station 1. The preform injection molding station 1 is provided with a preform injection molding station 1, a temperature adjustment pre-blowing station 7, a bottle blowing molding station 8, and a bottle removing station in sequence along the transfer direction. The preform can be transferred along the temperature adjustment pre-blowing station 7, the bottle blowing molding station 8, and the bottle removing station in sequence after being molded by the preform injection molding station 1 through a rotary positioning system. A blowing device 41 is provided below the transfer mechanism 4. The blowing device 41 is provided with a matching mold for the preform. The blowing device 41 is provided with an injection core 5 relative to the preform injection molding station 1. The injection core 5 is penetrated into the injection cavity 31.

[0035] In a temperature-controlled bottle blowing mold of the present application, the temperature-controlled bottle blowing mold is structurally divided into a bottle blowing machine platform, a transfer mechanism 4, a preform injection molding station 1, a temperature adjustment pre-blowing station 7, a molding station 8 and a material unloading station 9. Each mechanism and station is installed on the platform. The preform injection molding station 1 includes a sol injection molding system 2 and a preform mold 3. The sol injection molding system 2 is connected to the platform and can introduce molten bottle raw materials into the preform mold 3 for injection molding to obtain a preform. The preform mold 3 is provided with an injection cavity 31, and the preform is molded in the injection cavity 31. A hanging ring mold 23 is provided between the sol injection molding system 2 and the preform mold 3, which can be used to discharge the gas in the injection cavity 31 into it during the injection molding process, so that the preform quality is higher. At the same time, excess waste can form a group of hanging rings here, and the hanging rings are connected to the preform mold 3. The preform with integrated lifting ring is obtained, and the tail of the preform has a lifting ring perpendicular to the preform. This lifting ring can make the preform more convenient to transport between machines, and can be directly cut off as waste after being delivered to the designated position, which can effectively improve the product quality. The preform is provided with a split mold structure along the central axis of the injection cavity 31. The split mold structure divides the preform mold 3 into two independent molds. The structures of the two molds correspond to each other and can be opened and closed by a hydraulic cylinder. The main body of the transfer mechanism 4 includes a group of transfer turntables. From a structural point of view, the transfer mechanism 4 is provided with a rotation positioning system, and a matching mold for the preform is provided at the bottom. With the help of the rotation positioning system, it can be transferred between four stations at 90 degrees. In addition, the transfer mechanism 4 can also be understood as a turntable with a blowing device facing each processing station. The transfer mechanism 41 can be used to blow air into the preform to expand it to obtain a product. The transfer mechanism 4 is located above each station. The support shaft of the transfer mechanism 4 as a whole can be designed with a lifting structure. Of course, the blowing device 41 can also be designed with a lifting structure to achieve the docking of the blowing device 41 and the preform mold 3. After the docking of the blowing device 41 and the preform mold 3 is completed, the matching mold under the blowing device 41 and the first die 32 provided on the preform mold 3 are molded together to form a bottle mouth forming mold for the preform. The bottle mouth and bottleneck of the preform are formed at the position of the first die 32, and each station is provided with the same die. After the bottle mouth is formed on the preform mold 3 by the first die 32, the die of other stations can form a clamping structure for grabbing the preform. The matching mold under the blowing device 41 cooperates with the preform mold 3. After the first die 32 is provided to generate the bottle mouth of the preform, because the bottle mouth will not change with the subsequent stations, the matching die can always form a sealing structure with the bottle mouth, so that the blowing device can smoothly assist in transferring the bottle preform. The blowing device 41 is provided with an injection core 5 relative to the preform injection molding station 1. The injection core 5 is penetrated in the injection cavity 31 and forms a gap for molding, so that the bottle preform can be obtained more easily and the quality of the bottle preform is improved. A temperature-adjusting pre-blowing station 7 is also provided on the turntable along the transfer direction. The temperature-adjusting pre-blowing station 7 includes a preforming mold 71 and a temperature control component 73. The temperature control component 73 is wrapped around the preforming mold 71, which can keep the temperature of the bottle preform at the pre-blowing temperature while assisting in blowing the bottle preform into a pre-blown preform, which can effectively prevent the body of the bottle preform from suddenly becoming thinner during the bottle blowing process.However, the bottle mouth has already been shaped, which leads to damage in the blown bottle. By pre-blowing the bottle, the preform can be made to be close to the finished product, which can reduce the damage to the preform and reduce the defective rate. The turntable is also provided with a molding station 8 and a feeding station 9 in sequence along the transfer direction. The former is used to blow the pre-blown bottle to obtain the finished product, and the latter is used to feed the preform. The transfer mechanism 4 uses the turntable to reciprocate along 90°, that is, the blowing device 41 corresponding to the core injection 5 reciprocates between the preform injection molding station 1 and the temperature adjustment pre-blowing station 7. The core injection 5 assists in the injection molding of the preform and can assist in the transfer of the preform. In this way, the blowing device 41 on the temperature adjustment pre-blowing station 7 can be designed with other structures. Through the above structure, the bottle can be blown efficiently while reducing the defective rate of the bottle.

[0036] Combined with reference Figures 1 to 4 The sol injection molding system 2 includes two sets of main channels 21 arranged opposite to each other. In the channel plate, the two sets of main channels 21 flow into the branch channel 22 in opposite directions and penetrate the bottle embryo mold 3. One end of the branch channel 22 is connected to the injection cavity 31, and the other end is connected to the main channel 21. The branch channel 22 is connected to the ring mold 23. The pipe diameters of the two sets of main channels 21 gradually decrease along the direction close to the injection cavity 31.

[0037] In a temperature-controlled bottle blowing mold of the present application, the sol injection molding system 2 includes entering the main channel 21 through two groups of relatively arranged branch channels 22 in the flow channel plate. Because the plastic melt in the molten state collides with the flow channel wall in the process from the main channel 21 to the injection cavity 31, resulting in bubbles in the solution, flow rate, temperature difference and other quality conditions, at the same time, the bottle blank mold is a special hanging ring integrated bottle blank mold, the tail of the bottle blank is provided with a hanging ring perpendicular to the bottle blank, and each bottle blank is injected with glue through the main channel 21. The bottom end of the main channel 21 is connected to the branch channel plate, and the branch channel plate is designed with symmetrical channels facing each other, so that the flow rate, pressure and temperature of the molten glue entering the main channel 21 are balanced, thereby ensuring the temperature balance of the bottle blank, thereby achieving the effect of reducing the defective rate, and the hanging ring mold 23 is used to discharge excess gas into the period after liquid injection to ensure product quality. The pipe diameter of the main channel 21 gradually decreases along the direction close to the branch channel 22, and finally converges in the branch channel 22, so that the two solutions can be more thoroughly fused.

[0038] Combined with reference Figures 1 to 4 In one embodiment of the present application, the injection cavity 31 includes a first die 32 and a body mold 34. The first die 32 is connected to the body mold 34, and a first clamping portion 33 is provided relative to the body mold 34. The first clamping portion 33 is connected to an end of the first die 32 away from the transfer mechanism 4, and extends outward along the diameter direction of the first die 32. The first clamping portion 33 is wrapped around the first die 32 and connected to the body mold 34.

[0039] In a temperature-controlled bottle blowing mold of the present application, the injection cavity 31 includes a first die 32 and a preform body mold 34, the first die 32 is connected to the preform body mold 34, and a first clamping portion 33 is provided relative to the preform body mold 34, the first die 32 is partially connected to the injection cavity 31, and the other part of the first die 32 is covered by a blowing device 41, so that the preform and the transfer mechanism 4 can be connected more tightly, which can facilitate sealing and facilitate the transfer mechanism 4 to grab and transfer the preform by vacuuming, the first clamping portion 33 is the connection position between the bottleneck of the bottle preform and the bottle body, and the bottle mouth and the bottle body are connected. The neck is injection molded at the preform injection molding station 1, and there will be no change in the whole process of unloading to the final unloading station 9. The preform mainly gathers the raw materials required for the expansion of the bottle at the bottle body, which can reduce the tearing of the relatively fragile neck when the bottle expands, and play a role in protecting the bottle. The first clamping part 33 is arranged so that when the bottle body expands, the first clamping part 33 wraps around the neck of the bottle and abuts against the raw materials of the bottle body. The stress generated by the expansion is offset by the first clamping part 33, which can avoid the influence of blowing on the bottle mouth as much as possible, so as to achieve the purpose of improving product quality.

[0040] Combined with reference Figure 1 In one embodiment of the present application, a plurality of preform injection molding stations 1 are provided, and the plurality of preform injection molding stations 1 are arranged side by side along the mold splitting structure. A plurality of blowing devices 41 are provided, and each blowing device 41 corresponds to a preform injection molding station 1 .

[0041] In a temperature-controlled bottle blowing mold of the present application, the preform injection molding station 1 is provided with multiple groups, so that the entire bottle blowing machine can perform multiple groups of bottle blowing operations at the same time, which can greatly improve the bottle blowing efficiency. The preform injection molding station 1 is provided with multiple groups, and they are all located below the transfer mechanism 4, so the preform can be transferred more conveniently by the transfer mechanism 4. The blowing device 41 and the preform injection molding station 1 are correspondingly arranged, which can greatly improve the bottle blowing efficiency.

[0042] Combined with reference Figures 1 to 4 In one embodiment of the present application, the injection core 5 is used to extend into the bottle embryo mold 3 and clamped with the inner wall of the embryo body mold 34 to form a embryo body molding gap. A sliding cavity 51 is provided in the injection core 5, and an open portion 52 is provided at one end of the sliding cavity 51 facing the bottle embryo mold 3. A sealing rod 53 is slidably connected in the sliding cavity 51, and the sealing rod 53 abuts against the open portion 52. A pneumatic cavity 54 is provided on the periphery of the sliding cavity 51, and the pneumatic cavity 54 is connected to one end of the sliding cavity 51 close to the open portion 52.

[0043] In a temperature-controlled bottle blowing mold of the present application, the injection core 5 is used to extend into the preform mold 3 and clamp with the inner wall of the preform body mold 34 to form a preform body molding gap, which is the shape of the finished bottle body. In this way, the shape of the injection-molded preform can be more stable. In order to facilitate injection molding and transfer of the preform, a sliding cavity 51 is provided in the injection core 5. The sliding cavity 51 is provided with an open portion 52 at the bottom of the injection core 5, and a pneumatic cavity 54 is provided near the open portion 52 at the periphery of the sliding cavity 51. After the injection molding is completed, the first die 32 is in a sealed state. When the preform mold 3 is opened, the pneumatic cavity 54 is evacuated to form a vacuum, which can firmly grasp the preform and facilitate its transfer. In order to enable the injection core 5 to work normally in the injection molding process, a sealing rod 53 is slidably connected in the sliding cavity 51. The purpose of sealing / releasing the injection core 5 is achieved by moving the sealing rod 53, so that the structure can facilitate the transfer of the preform and assist in the injection molding of the preform, which can effectively improve the production efficiency of the preform and ensure the quality of the preform.

[0044] Combined with reference Figures 1 to 6 In one embodiment of the present application, a plurality of temperature-adjusting pre-blowing stations 7 are arranged side by side, and each preform injection molding station 1 corresponds to a group of temperature-adjusting pre-blowing stations 7. The temperature-adjusting pre-blowing stations 7 include a preforming mold 71 and a temperature control component 73. The temperature control component 73 is wrapped around the preforming mold 71. The preforming mold 71 is divided into two corresponding modules by a split mold structure. When the two modules are molded together, a preforming cavity 72 is enclosed and formed. The preforming cavity 72 is provided with a second die and a second clamping portion. The cavity of the preforming cavity 72 is connected to an end of the second clamping portion away from the second die, and is wrapped around the second clamping portion.

[0045] In a temperature-controlled bottle blowing mold of the present application, a plurality of temperature-adjusting pre-blowing stations 7 are arranged side by side, and the corresponding preform injection molding stations 1 are arranged, so that multiple groups of preforms can be processed at the same time more conveniently. The preforming mold 71 is divided into two corresponding modules through a split mold structure, and a preforming cavity 72 is formed between the two modules. The preforming cavity 72 is provided with a second die and a second clamping portion, where the second die is used to clamp the second die of the preform. The main difference between the preforming cavity 72 and the injection cavity 31 is that the sizes of the modules corresponding to the bottle body are different. The bottle body mold of the preforming cavity 72 is larger than the bottle body mold of the preform mold 3. When the preform is inserted, it is in a suspended state. Its purpose is to be used for the preliminary expansion of the bottle material at the bottle body so that its thickness and temperature will not exceed the bottleneck position by too much, which can effectively avoid tearing the connection between the bottleneck and the bottle body during one expansion, and can effectively reduce the defective rate of the bottle.

[0046] Combined with reference Figures 5 to 7 In one embodiment of the present application, the temperature control component 73 is connected to the second die, the temperature control component 73 is penetrated through the outer wall of the preforming mold 71, and is coiled and covered on the outer wall of the preforming mold 71 at a position away from the parting structure. Two groups of temperature control components 73 are provided relative to the parting structure, and the two groups of temperature control components 73 are surrounded by the preforming cavity 72.

[0047] In a temperature-controlled bottle blowing mold of the present application, the temperature control component 73 is connected to the second die, and its coil covers the entire outer wall of the preform mold 71, which can heat the bottle embryo more evenly, make it unfold more smoothly, and can heat the bottle embryo into a preform embryo more smoothly. The temperature control component 73 is divided into two parts due to the split mold structure. The temperature control components 73 of the two parts cooperate with each other to improve the stability of heating and improve product quality.

[0048] Combined with reference Figures 5 and 6 In one embodiment of the present application, the blowing device 41 is provided with a heating core rod 6 facing the temperature adjustment pre-blowing station 7, the heating core rod 6 is penetrated into the pre-forming cavity 72, a peripheral array of the heating core rod 6 has a plurality of air holes 61, the air holes 61 are arranged facing the inner wall of the pre-forming cavity 72, and a flexible protective end 62 is provided at one end of the heating core rod 6 away from the blowing device 41, and the flexible protective end 62 is used to abut against the bottom of the preform when the heating core rod 6 is inserted into the pre-forming cavity 72.

[0049] In a temperature-controlled bottle blowing mold of the present application, a blowing device 41 is provided with a heating core rod 6 facing the temperature-adjusting pre-blowing station 7, and the heating core rod 6 is penetrated in the pre-forming cavity 72. A plurality of air holes 61 are provided in sequence from top to bottom at the relative positions of the periphery of the heating core rod 6, and the air holes 61 are arranged facing the inner wall of the bottle body mold of the pre-forming cavity 72, so that the bottle preform can be blown open more evenly to avoid damage to the bottle preform. A flexible protective end 62 is provided at one end of the heating core rod 6 away from the blowing device 41, and the flexible protective end 62 is generally made of nylon material, which can effectively prevent scalding and reduce the pressure brought to the bottle preform by the heating core rod 6. By abutting the bottle preform with the flexible protective end 62, the bottle preform can be assisted in unfolding, and as the heating core rod 6 descends, more air holes 61 are blown up under pressure facing the bottle body position, which can effectively improve the pre-blowing efficiency.

[0050] Combined with reference Figures 1 to 7 In one embodiment of the present application, the molding station 8 is divided into two corresponding modules by a split mold structure. When the two modules are molded together, a bottle blowing cavity 81 is enclosed and formed. The bottle blowing cavity 81 is provided with a third die and a third clamping portion. A cooling component 82 is penetrated through the outer wall of the molding station 8. The cooling component 82 is connected to the third die and surrounds the bottle blowing cavity 81.

[0051] In a temperature-controlled bottle blowing mold of the present application, the molding station 8 is divided into two corresponding modules by a split mold structure. When the two modules are molded together, a bottle blowing cavity 81 is enclosed and formed. Because the bottle embryo has been heated and softened at the preforming mold 71 and initially unfolded, the molding station 8 is mainly used to mold the bottle and complete the cooling work at the same time. For this reason, after the blowing device 41 is connected to the third die to complete the sealing, the blowing device 41 blows air directly, and the bottle body material after pre-blowing is expanded and evenly expanded directly at high speed until it abuts against the bottle blowing cavity 81. The outer wall of the molding station 8 is penetrated by a cooling component 82, and the cooling component 82 is wrapped around the bottle blowing cavity 81. Generally, the cooling component 82 is a water-cooling component, and the water pipe is wrapped around the outer wall of the bottle blowing cavity 81, which is used to keep the bottle blowing cavity 81 at a low temperature. While protecting the molding station 8, the outer wall of the bottle is quickly cooled in a short time when it contacts the bottle blowing cavity 81 to obtain a bottle. The above structure can effectively improve the production efficiency of the bottle and effectively reduce the probability of defective products.

[0052] Reference Figure 8 As shown, the present invention further proposes a temperature-controlled blowing bottle system, which includes the above-mentioned temperature-controlled blowing bottle mold. The specific structure of the temperature-controlled blowing bottle mold refers to the above-mentioned embodiment. Since the temperature-controlled blowing bottle system adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0053] The present invention proposes a temperature-controlled bottle blowing mold, wherein the temperature-controlled bottle blowing system includes a preform molding module, a pre-blowing module, and a molding module. The preform molding module is used for injection molding of the preform, including a first die 32 installed on a transfer mechanism 4, an injection core 5 extending into an injection cavity 31 and cooperating with the first die 32 to mold a bottle mouth, and a bottle preform with a uniform inner diameter of the bottle body is molded through the cooperation of a first clamping portion 33, an injection core 5, and a preform body mold 34; the pre-blowing module is used for receiving the preform delivered by the transfer mechanism 4, and a preform cavity 72 of the preform mold 71 is provided with the same second The mouth die, the second mouth die and the second clamping part can fix the bottle preform by clamping the bottle mouth end of the bottle preform after the preforming mold 71 is closed. The temperature control component 73 can maintain the temperature of the bottle preform, and press the bottle preform against the bottle preform and blow air by heating the core rod 6 to pre-blow out the preformed bottle body; the forming module is used to receive the preformed bottle preform, and the preformed bottle is clamped by the second mouth die. The inner wall of the forming module is provided with a cooling component. The air port of the blowing device 41 blows air, and the bottle body of the preformed bottle expands and contacts the inner wall of the forming station 8, and then contacts the cooling component 82 to cool and shape the bottle.

[0054] It can be understood that the temperature-controlled bottle blowing system includes a preform shaping module, a pre-blowing module, and a molding module. The preform shaping module is used to shape the preform, the pre-blowing module shapes the preform into a pre-blown preform, and the molding module is used to blow the pre-blown preform into shape. The mouth and bottleneck of the bottle are formed at the preform shaping module at one time, because the bottle blowing is mainly used to expand the material accumulated at the bottle body to make it have the shape we want. However, after too much bottle body material is accumulated, the amount of material at the bottle body is much larger than that at the bottleneck. If it is directly preheated and then directly molded, there is a risk of the bottleneck and the bottle body being directly torn. Otherwise, even if the bottle mouth and the bottle body are successfully The material thickness is also difficult to be uniform, resulting in low quality of the bottle. For this purpose, a pre-blowing module is designed. The preform is expanded uniformly by heating the core rod 6 and directly abutting and blowing it up. The larger the expansion of the preform is, the more pores 61 can be used to blow the bottle body more uniformly. Afterwards, the pre-blown preform in a high-temperature softened state is sent to the molding module and can be directly blown to expand it. The bottle body becomes more uniform due to the pre-blowing process, and is not easily damaged by direct blowing. Direct blowing can improve the efficiency of molding and quickly cool the bottle. The above structure can efficiently produce bottles and effectively reduce the defective rate of bottles.

[0055] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0056] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A temperature-controlled bottle blowing mold, characterized in that: include: A preform injection molding station, the preform injection molding station comprising a sol injection molding system and a preform mold, an injection cavity is provided in the preform mold, a hanging ring mold is provided between the sol injection molding system and the preform mold, the sol injection molding system is connected to the preform mold through the hanging ring mold, and the preform mold is provided with a split mold structure along the axis of the injection cavity; A transfer mechanism, the transfer mechanism is located above the preform injection molding station and is provided with a rotation positioning system. The transfer mechanism is provided with a preform injection molding station, a temperature adjustment pre-blowing station, a bottle blowing molding station, and a bottle removing station in sequence along the transfer direction relative to the preform injection molding station. Through the rotation positioning system, the preform can be transferred in sequence along the temperature adjustment pre-blowing station, the bottle blowing molding station, and the bottle removing station after being molded by the preform injection molding station. A blowing device is provided below the transfer mechanism, the blowing device is provided with a matching mold for the preform, and the blowing device is provided with an injection core relative to the preform injection molding station, and the injection core is penetrated in the injection cavity; The injection cavity comprises a first die and a body mold, wherein the first die is connected to the body mold and is provided with a first clamping portion relative to the body mold, wherein the first clamping portion is connected to an end of the first die away from the transfer mechanism and extends outward along the diameter direction of the first die, and the first clamping portion surrounds the first die and is connected to the body mold; The injection core is used to extend into the bottle embryo mold and clamp with the inner wall of the embryo body mold to form an embryo body molding gap. A sliding cavity is provided in the injection core. An open portion is provided at one end of the sliding cavity facing the bottle embryo mold. A sealing rod is slidably connected in the sliding cavity. The sealing rod abuts against the open portion. A pneumatic cavity is provided at the periphery of the sliding cavity. The pneumatic cavity is connected to one end of the sliding cavity close to the open portion. The temperature-adjusting pre-blowing stations are arranged in multiple groups side by side, and each of the preform injection molding stations corresponds to a group of the temperature-adjusting pre-blowing stations. The temperature-adjusting pre-blowing stations include a preforming mold and a temperature control component. The temperature control component is wrapped around the preforming mold. The preforming mold is divided into two corresponding modules by a split mold structure. When the two modules are molded together, a preforming cavity is enclosed and formed. The preforming cavity is provided with a second die and a second clamping portion. The cavity body of the preforming cavity is connected to an end of the second clamping portion away from the second die, and is wrapped around the second clamping portion.

2. A temperature-controlled bottle blowing mold according to claim 1, characterized in that: The sol injection molding system includes two sets of main flow channels arranged opposite to each other. In the flow channel plate, the two sets of main flow channels flow into the branch flow channels in opposite directions and penetrate the bottle embryo mold. One end of the branch flow channel is connected to the injection cavity, and the other end is connected to the main flow channel. The branch flow channel is connected to a hanging ring mold. The pipe diameters of the two sets of main flow channels gradually decrease along the direction approaching the injection cavity.

3. A temperature-controlled bottle blowing mold according to claim 2, characterized in that: The preform injection molding stations are provided in multiple groups, and the multiple groups of preform injection molding stations are arranged side by side along the mold splitting structure. The blowing devices are provided in multiple groups, and each of the blowing devices corresponds to one preform injection molding station.

4. A temperature-controlled bottle blowing mold according to claim 2, characterized in that: The temperature control component is connected to the second die, the temperature control component is penetrated through the outer wall of the preforming mold, and is coiled and covered on the outer wall of the preforming mold at a position away from the mold splitting structure. Two groups of the temperature control components are arranged relative to the mold splitting structure, and the two groups of the temperature control components are wrapped around the preforming cavity.

5. A temperature-controlled bottle blowing mold according to claim 4, characterized in that: The blowing device is provided with a heating core rod facing the temperature-adjusting pre-blowing station, the heating core rod is penetrated through the pre-forming cavity, a peripheral array of the heating core rod is provided with a plurality of air holes, the air holes are arranged facing the inner wall of the pre-forming cavity, and a flexible protective end is provided at one end of the heating core rod away from the blowing device, the flexible protective end is used to abut against the bottom of the bottle embryo when the heating core rod is inserted into the pre-forming cavity.

6. A temperature-controlled bottle blowing mold according to claim 2, characterized in that: The molding station is divided into two corresponding modules by a split mold structure. When the two modules are molded together, a bottle blowing cavity is enclosed and formed. The bottle blowing cavity is provided with a third die and a third clamping part. A cooling component is penetrated through the outer wall of the molding station. The cooling component is connected to the third die and surrounds the bottle blowing cavity.

7. A temperature-controlled bottle blowing system, comprising the temperature-controlled bottle blowing mold according to any one of claims 1 to 6, characterized in that: The temperature-controlled bottle blowing system comprises: A preform molding module, which is used for injection molding of a preform, comprises a first die installed on the transfer mechanism, an injection core extending into the injection cavity and cooperating with the first die to mold a bottle mouth, and a bottle preform with a uniform inner diameter of the bottle body is molded by the cooperation of the first clamping portion, the injection core and the preform body mold; A pre-blowing module, which is used to receive the preform delivered by the transfer mechanism. The pre-forming cavity of the pre-forming mold is provided with a second die with the same structure. The second die and the second clamping part can fix the preform by clamping the bottle mouth end of the preform after the pre-forming mold is closed. The temperature control component can maintain the temperature of the preform, and the preform is pressed against the preform by heating the core rod and blowing air to pre-blow out the preformed bottle body. The molding module is used to receive the preformed bottle embryo, and the preformed bottle is clamped by the third die. The inner wall of the molding module is provided with a cooling component. The air outlet of the blowing device blows air, and the body of the preformed bottle expands and contacts the inner wall of the molding station. After contacting the cooling component, it is cooled and shaped to obtain a bottle.

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