Exhaust part structure for mouth mold module

Abstract

The utility model relates to the field of container production, and particularly provides an exhaust part structure for a mouth mold module, the exhaust part structure comprises an in-cavity exhaust groove, an air outlet and an out-cavity exhaust groove, the in-cavity exhaust groove is arranged on a forming part of the mouth mold module, the air outlet is arranged on the side surface of the forming part, the air outlet is communicated with the in-cavity exhaust groove, and the out-cavity exhaust groove is communicated with the outside-cavity exhaust groove. The out-of-cavity exhaust groove is formed in the locking part of the mouth mold module, and the out-of-cavity exhaust groove is communicated with the air outlet so as to exhaust air of the mouth mold module. The problem that in the prior art, gas cannot be exhausted in time in the bottle opening production process is solved, it is guaranteed that the gas cannot be accumulated, and smooth forming of the bottle opening is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of container production, in particular to an exhaust part structure for a die module. Background Art

[0002] In bottle production, the preform and the cap are processed separately. The preform is usually produced by a blank molding device, such as Figure 1 and Figure 2 As shown, the blank mold forming device includes a core rod assembly, a mouth mold module, a flange, a cavity and a bottom mold. A cavity is formed between the core rod assembly and the mouth mold module, the cavity and the bottom mold, and the bottle blank is formed in the cavity. Since the bottle mouth needs to cooperate with the bottle cap to seal the bottle through the bottle cap, the shape of the bottle mouth is shaped by the mouth mold module so that threads are produced on the outside of the bottle mouth, and the bottle is sealed by the cooperation of the bottle cap and the threads.

[0003] During the production process of the bottle mouth, since the bottle mouth is located at the end of the preform molding, gas accumulation is easy to occur at the bottle mouth. If the accumulated gas cannot be discharged in time, the bottle mouth will form defects such as material shortage, bubbles, and burning, which will affect the use of the bottle mouth.

[0004] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide an exhaust part for the mouth mold module, aiming to solve the problem in the existing technology that the gas cannot be discharged in time during the bottle mouth production process, ensure that the gas will not accumulate, and ensure the smooth molding of the bottle mouth.

[0006] The technical solution adopted by the present application to solve the technical problem is as follows: an exhaust part for a die module, comprising:

[0007] An intracavity exhaust groove, wherein the intracavity exhaust groove is provided on the forming portion of the die module;

[0008] An air outlet, the air outlet being arranged on a side of the forming portion and being communicated with the exhaust groove in the cavity;

[0009] The extra-cavity exhaust groove is arranged on the locking portion of the die module, and the extra-cavity exhaust groove is connected with the air outlet to discharge the gas from the die module.

[0010] Furthermore, the intra-cavity exhaust groove includes a conformal exhaust groove, which is arranged on the inner wall of the forming portion and fits with the thread of the bottle mouth.

[0011] Furthermore, the intra-cavity exhaust groove also includes a reinforced exhaust groove, which is arranged on the inner wall of the forming part, and the two ends of the reinforced exhaust groove are respectively connected to the conformal exhaust groove, and the reinforced exhaust groove is fitted with the support ring of the bottle mouth.

[0012] Furthermore, the extracavity exhaust groove includes a conical groove, and the conical groove is respectively arranged on the outer ring of the first locking edge, the second locking edge and the installation edge of the locking part.

[0013] Furthermore, the extracavity exhaust groove further includes a cross-sectional groove, and the cross-sectional groove is provided on the end surfaces of the first locking edge and the second locking edge.

[0014] Furthermore, the cross-section groove is connected to the tapered groove.

[0015] Furthermore, the exhaust portion is provided with a plurality of air outlets, and the air outlets are respectively communicated with the conformal exhaust groove and the reinforced exhaust groove to discharge the gas in the forming portion.

[0016] Furthermore, the gas outlet is also connected to the conical groove, so as to guide the gas discharged from the molding part to the outside of the die module through the conical groove and the cross-section groove.

[0017] Furthermore, the cross-section of the exhaust groove in the cavity is square.

[0018] Furthermore, the cross-section of the extracavity exhaust groove is square.

[0019] Beneficial effects:

[0020] This application provides an exhaust structure for a die module. The exhaust structure includes an intracavity exhaust groove, an outlet, and an extracavity exhaust groove. The intracavity exhaust groove and the outlet cooperate to guide gas within the forming section to the outlet, preventing gas accumulation within the forming section and ensuring smooth bottle mouth formation within the forming section. The extracavity exhaust groove is then connected to the outlet, and gas at the outlet is discharged outside the die module through the extracavity exhaust groove, preventing gas from affecting the operation of the die module. This stabilizes the bottle mouth forming process and prevents gas accumulation from adversely affecting the bottle mouth formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of a blank mold forming device;

[0022] Figure 2 for Figure 1 Schematic diagram of the cross section along the AA direction;

[0023] Figure 3 This is a schematic diagram of the die module in the embodiment of the present application;

[0024] Figure 4 A schematic diagram of the die module from another angle in an embodiment of the present application;

[0025] Figure 5 This is a side view of the die module in the embodiment of the present application;

[0026] Figure 6 This is a side view of the die module in the embodiment of the present application without the second locking edge;

[0027] Figure 7 This is a side view of the die module in the embodiment of the present application, in which a straight edge is used instead of the second locking edge;

[0028] Figure 8 A top view of the die module in an embodiment of the present application;

[0029] Figure 9 for Figure 8 Schematic diagram of the cross section along the DD direction

[0030] Figure 10 This is a schematic diagram of the third angle of the die module in the embodiment of this application.

[0031] Description of reference numerals:

[0032] 1. Molding part; 11. Molding inner wall; 12. Molding groove; 2. Locking part; 21. First locking edge; 22. Second locking edge; 23. Mounting edge; 3. Cooling part; 31. Cooling pipeline; 311. Main cooling pipe; 312. Water inlet cooling pipe; 313. Water outlet cooling pipe; 314. Water inlet connector; 315. Water outlet connector; 32. Water outlet; 33. Water inlet; 4. Exhaust part; 41. Intracavity exhaust groove; 411. Conformal exhaust groove; 412. Reinforced exhaust groove; 42. Air outlet; 43. Extracavity exhaust groove; 431. Conical groove; 432. Section groove; 10. Core rod assembly; 20. Mould module; 30. Cavity; 40. Bottom mould; 50. Flange. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions and advantages of this application clearer and more explicit, the following further describes this application in detail with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain this application and are not intended to limit this application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot 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 application, unless otherwise specified, "multiple" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] The utility model provides an exhaust structure for a die module, which solves the problem that the gas cannot be discharged in time during the bottle mouth production process in the prior art, ensures that the gas will not accumulate and ensures the smooth formation of the bottle mouth, wherein the die module and the preform forming device are as follows Figures 1 to 10 As shown, the core rod assembly 10 cooperates with the die module 20, the cavity 30, and the bottom mold 40 in the preform forming device to form the preform in the cavity between these structures, and the flange 50 is used to fix the die module 20 and form the bottle mouth in the cavity between the die module 20 and the core rod assembly 10. The die module 20 is composed of two templates, which are assembled together to form the die module 20, and the bottle mouth is formed in the die module 20. Specifically, as shown in FIG. Figure 3As shown, the die module 20 includes a forming section 1, a locking section 2, a cooling section 3, and a venting section 4. The forming section 1 is used to form the threads of the bottle mouth. When the bottle mouth needs to be formed, the blank mold forming device is hung on the injection molding machine and connected to the injection molding machine. The plastic particles in the injection molding machine are heated and dissolved in the injection molding machine barrel. The plastic particle melt then flows through the mold hot runner into the blank mold forming device to cool and solidify, and then adheres to the core rod assembly 10 and the die module 20. The core rod assembly 10 is used to shape the inner wall of the bottle preform, while the die module 20 is used to shape the outer shape of the bottle mouth of the bottle preform. Therefore, the thread of the bottle mouth is formed by the forming section 1. The locking section 2 is arranged on the outer ring of the forming section 1. The locking section 2 is embedded in the core rod assembly 10 and the flange 50, and is used to fix the forming section 1. This prevents the die module 20 from being squeezed apart by the forming force of the bottle mouth during the forming process, affecting the forming of the bottle mouth. By using the locking section 2 to fix the forming section 1, the quality of the parting line of the bottle mouth and the bottle mouth size are guaranteed, and the bottle mouth forming failure is avoided. The cooling unit 3 is disposed on the outer ring of the forming unit 1. Specifically, the cooling unit 3 is disposed within the locking unit 2. The bottle mouth is cooled by the cooling unit 3 during forming to prevent the bottle mouth from being overheated and causing deformation of the formed dimensions. In addition, when the temperature is too high, the wall thickness of the bottle mouth will be more difficult to control, resulting in the quality of the bottle mouth not meeting the requirements. Therefore, the bottle mouth is cooled by the cooling unit 3 to ensure that the dimensions and wall thickness of the bottle mouth after forming meet high precision requirements. In addition, when the bottle mouth is formed, since the bottle mouth is located at the end of the entire bottle blank, gas accumulation is likely to occur. If the gas in the bottle mouth is not discharged in time, the bottle mouth will experience defects such as material shortage, bubbles, and burning. Therefore, it is necessary to discharge the accumulated gas in time during the bottle mouth forming process. Therefore, the accumulated gas is discharged in time through the exhaust unit 4 to avoid the occurrence of defects during the bottle mouth forming process and ensure the smooth progress of the bottle mouth forming process.

[0037] Specifically, the cooling section 3 includes a cooling pipe 31, a water outlet 32 ​​and a water inlet 33. The cooling pipe 31 is arranged around the outer ring of the forming section 1. The water outlet 32 ​​and the water inlet 33 are respectively arranged at both ends of the cooling pipe 31. Cooling water enters the cooling pipe 31 from the water inlet 33 and flows in the cooling pipe 31. While flowing in the cooling pipe 31, the cooling water absorbs the heat generated when the bottle mouth is formed in the forming section 1. Then the cooling water flows along the cooling pipe 31 and flows to the water outlet 32, and is finally discharged from the water outlet 32. In this embodiment, as shown in FIG. Figure 4As shown, the cooling pipe 31 is composed of a plurality of straight pipes, which are arranged around the outer ring of the forming part 1. Cooling water flows in the straight pipes and removes the heat generated when the bottle mouth is formed in the forming part 1. However, the straight pipes are not completely fitted with the forming part 1, resulting in a gap between the straight pipes and the forming part 1, resulting in poor cooling effect of the cooling part 3. Therefore, in order to improve the cooling effect of the cooling part 3, in other embodiments, the cooling pipe 31 can be composed of a plurality of curved pipes, which can be completely fitted with the outer ring of the forming part 1. By making the curved pipes and the forming part 1 completely fit, the gap between the curved pipes and the forming part 1 is eliminated, which is more conducive to the cooling water in the cooling pipes absorbing the heat in the forming part 1, so that the heat in the forming part 1 can be discharged in time, thereby improving the cooling effect of the cooling part 3.

[0038] The cooling pipe 31 includes a main cooling pipe 311, a water inlet cooling pipe 312 and a water outlet cooling pipe 313. The main cooling pipe 311 is stacked with the water inlet cooling pipe 312 and the water outlet cooling pipe 313. The main cooling pipe 311 is arranged above the water inlet cooling pipe 312 and the water outlet cooling pipe 313. The water inlet cooling pipe 312 and the water outlet cooling pipe 313 are respectively connected to the main cooling pipe 311. The water inlet cooling pipe 312 and the water outlet cooling pipe 313 are arranged adjacent to each other. The water inlet 33 is arranged at the end of the water inlet cooling pipe 312, and the water outlet 32 ​​is arranged at the end of the water outlet cooling pipe 313. The water inlet 33 and the water outlet 32 ​​are arranged at the same height, and the angle between the water inlet 33 and the water inlet cooling pipe 312 is small, and the angle between the water outlet 32 ​​and the water outlet cooling pipe 313 is small, so as to reduce the occupied position of the cooling part 3, increase the contact area between the cooling part 3 and the molding part 1, and thereby improve the cooling efficiency of the cooling part 3.

[0039] When the water inlet cooling pipe 312 and the water outlet cooling pipe 313 are respectively connected to the main cooling pipe 311, it is necessary to ensure that the cooling water can flow smoothly from the water inlet cooling pipe 312 to the main cooling pipe 311, so that the cooling water can absorb the heat in the molding part 1 by flowing in the main cooling pipe 311, and cool the bottle mouth molding process, thereby ensuring the quality of the bottle mouth molding; and let the cooling water flow smoothly from the main cooling pipe 311 to the water outlet cooling pipe 313, and discharge the cooling water that has absorbed the heat from the water outlet 32 ​​in time, so that the cooling water can continue to flow in the main cooling pipe 311. Therefore, in the present application, the cooling pipeline 31 further includes a water inlet connector 314 and a water outlet connector 315. The water inlet connector 314 connects the water inlet cooling pipe 312 and the main cooling pipe 311, and the water outlet connector 315 connects the main cooling pipe 311 and the water outlet cooling pipe 313. The water inlet connector 314 and the water outlet connector 315 are cylindrical. At the same time, the end of the water inlet connector 314 is provided with a port for connecting the water inlet cooling pipe 312 and the main cooling pipe 311, and the water outlet connector 315 is provided with a port for connecting the water outlet cooling pipe 313 and the main cooling pipe 311. Therefore, one end of the water inlet cooling pipe 312 and the main cooling pipe 311 can be inserted into the port of the water inlet connector 314, allowing the cooling water flowing in the water inlet cooling pipe 312 to flow to the main cooling pipe 311 through the guidance of the water inlet connector 314. Similarly, the other ends of the outlet cooling pipe 313 and the main cooling pipe 311 are inserted into the ports of the outlet connector 315, so that the cooling water flowing in the main cooling pipe 311 passes through the outlet connector 315, and then the cooling water that absorbs the heat in the finished mold part 1 is smoothly discharged from the water outlet 32.

[0040] When the bottle mouth is being formed in the forming part 1, the forming part 1 needs to be locked to prevent the two mutually fitting templates used to form the mouth mold module 20 from bouncing apart due to the force of the bottle mouth forming during the forming of the bottle blank, thereby affecting the size of the mold line of the bottle mouth after the bottle mouth is formed. Because the bottle mouth part needs to be in direct contact with the customer's mouth, if the mold line of the bottle mouth does not meet the requirements, it will affect the customer's experience of use. Therefore, it is necessary to control the production process during the bottle mouth forming so that the mold line of the bottle mouth meets the requirements to avoid giving the customer a bad experience. Therefore, in this application, the locking part 2 is used to lock the forming part 1 to keep the forming part 1 stable. Specifically, as Figure 5As shown, the locking portion 2 includes a first locking edge 21, which shrinks inwards and is embedded in the flange 50. The first locking edge 21 is tightened by the flange 50 to lock the molding portion 1 and the die module 20, thereby preventing the die module 20 from being ejected during bottle mouth molding and affecting the quality of bottle mouth molding, thereby ensuring the quality of the parting line and the size of the bottle mouth. Furthermore, in order to strengthen the tightening of the die module 20, the locking portion 2 also includes a second locking edge 22, which shrinks inwards and is embedded in the core rod assembly 10. The first locking edge 21 is tightened by the core rod assembly 10 to lock the molding portion 1 and further tighten the die module 20, thereby ensuring the molding quality of the bottle mouth. In other embodiments, when the quality requirements for bottle mouth molding are relatively low, only the first locking edge 21 can be used for tightening, such as Figure 6 As shown, the original second locking edge 22 can be cancelled, and only the first locking edge 21 is used to lock the molded part 1, or a straight edge can be used instead of the original second locking edge 22, as shown in FIG. Figure 7 As shown, the locking portion 2 is balanced by the straight edge, and the die module 20 is not fastened by the straight edge.

[0041] Furthermore, to provide support for the first locking edge 21 and the second locking edge 22, the locking portion 2 also includes a mounting edge 23. The mounting edge 23 is disposed between the first locking edge 21 and the second locking edge 22 and surrounds the outer ring of the forming portion 1. The mounting edge 23 provides support for the first locking edge 21 and the second locking edge 22, and also provides support for the forming portion 1. Furthermore, a mounting space is reserved within the mounting edge 23 for mounting the cooling unit 3. This allows the cooling unit 3 to be disposed within the mounting edge 23, thereby improving the integrity of the die module 20 and thereby increasing its service life.

[0042] The bottle mouth is formed within the forming section 1, where the outer shape of the bottle mouth is shaped. Specifically, the forming section 1 includes an inner wall 11, which is used to shape the bottle mouth. As the plastic molten material flows into the forming section 1 and cools and solidifies, the forming section gradually conforms to the inner wall 11, thereby shaping the outer shape of the bottle mouth. Furthermore, in order to form threads on the bottle mouth, allowing the bottle cap to be threadedly connected to the bottle mouth and seal the bottle, an additional structure is required to form threads on the outer ring of the bottle mouth during the forming process. Specifically, in the present application, the molding part 1 also includes a plurality of molding grooves 12, and the molding grooves 12 are arranged at intervals on the molding inner wall 11. When the plastic particle melt cools and solidifies and fits the molding inner wall 11, a portion of the plastic particle melt is embedded in the molding groove 12. After the bottle mouth cools and solidifies, the plastic particle melt located in the molding groove 12 is hardened and formed, thereby forming a protrusion at a corresponding position on the bottle mouth, and then forming a thread on the bottle mouth. Subsequently, the bottle cap can be threadedly connected to the bottle mouth, and the bottle is sealed by the bottle cap to ensure the sealing of the bottle.

[0043] When the bottle mouth is formed, a gas forming part will be generated during the cooling and solidification of the plastic particle melt. After the bottle mouth is formed, the gas in the forming part 1 needs to be discharged in time to avoid gas accumulation causing material shortage, bubbles, burning and other adverse phenomena at the bottle mouth. Therefore, the die module 20 also includes an exhaust part 4, which is arranged on the inside of the forming part 1 and is used to discharge the gas during the bottle mouth molding to ensure the quality of the bottle mouth molding.

[0044] Specifically, the exhaust portion 4 includes an inner exhaust groove 41, an air outlet 42 and an outer exhaust groove 43. The inner exhaust groove 41 is provided on the molding portion 1 of the die module 20. Figure 8 and Figure 9 As shown, to ensure that when the bottle mouth is formed in the forming part 1, the gas can be discharged through the intra-cavity exhaust groove 41, the gas outlet 42 is set on the side of the forming part 1, and the gas outlet 42 is connected to the intra-cavity exhaust groove 41, and the gas in the intra-cavity exhaust groove 41 is discharged through the gas outlet 42 to avoid the accumulated gas in the forming part 1 affecting the forming of the bottle mouth, the extra-cavity exhaust groove 43 is set on the locking part 2 of the die module 20, and the extra-cavity exhaust groove 43 is connected to the gas outlet 42. After the gas in the forming part 1 is guided to the gas outlet 42 by the intra-cavity exhaust groove 41, it is also necessary to discharge the die module 20 from the gas outlet 42 to avoid the gas accumulation at the die module 20 affecting the use of the die module 20. Therefore, this part of the gas flowing to the gas outlet 42 is discharged through the extra-cavity exhaust groove 43 on the die module 20, and then the extra-cavity exhaust groove 43 discharges the gas from the die module 20.

[0045] The intracavity vent groove 41 includes a conformal vent groove 411, which is provided on the inner wall of the forming portion 1, that is, on the forming inner wall 11. The conformal vent groove 411 is in contact with the thread of the bottle mouth. When the bottle mouth is gradually formed, the gas used for forming the bottle mouth gradually flows into the forming portion 1 from the conformal vent groove 411, thereby preventing gas from accumulating in the forming portion 1. However, the bottle mouth is generally designed with a support ring. Here, the outer diameter of the support ring is relatively large. Accordingly, the forming inner wall 11 needs to expand to both sides. In this case, the depth of the forming inner wall 11 at the position of the bottle mouth support ring is relatively deep, which is not conducive to the discharge of gas. Therefore, in view of the position of the bottle mouth support ring, the intracavity vent groove 41 also includes a reinforced vent groove 412. The reinforced vent groove 412 is provided on the inner wall of the forming portion 1, at a position corresponding to the bottle mouth support ring. The two ends of the reinforced vent groove 412 are respectively connected to the conformal vent groove 411, thereby facilitating the discharge of gas during the forming of the bottle mouth.

[0046] When the gas flows out of the molding part 1, it flows through the cavity exhaust groove 41 and the gas outlet 42, and finally passes through the cavity exhaust groove 43 to discharge the die module 20. Therefore, in order to allow the gas to be discharged smoothly from the die module 20, the cavity exhaust groove 43 includes a conical groove 431, which is respectively provided on the outer ring of the first locking edge 21, the second locking edge 22 and the mounting edge 23 of the locking part 2. Figure 10 As shown, the guiding gas gradually flows from the gas outlet 42 to the outside of the molding part 1, and is finally discharged from the die module 20. Furthermore, in order to allow the gas to be discharged more smoothly from the die module 20, the extra-cavity exhaust groove 43 also includes a cross-sectional groove 432. The cross-sectional groove 432 is arranged on the end faces of the first locking edge 21 and the second locking edge 22. At this time, the cross-sectional groove 432 is connected to the conical groove 431, thereby guiding the gas to finally be discharged from the ends of the first locking edge 21 and the second locking edge 22, allowing the gas to be discharged more smoothly from the die module 20.

[0047] At this time, the exhaust part 4 is provided with a plurality of air outlets 42, which are respectively connected with the conformal exhaust groove 411 and the reinforced exhaust groove 412, so as to discharge the gas in the molding part 1 out of the molding part 1, and then the air outlet 42 is also connected with the conical drawing groove 431, and then the gas discharged from the molding part 1 is guided to the outside of the die module 20 through the conical drawing groove 431 and the cross-section drawing groove 432, and finally the gas is discharged from the molding part 1 to the outside of the die module 20 through the exhaust groove in the cavity, the air outlet and the exhaust groove outside the cavity, so as to avoid gas accumulation.

[0048] Usually, the cross-section of the exhaust groove 41 in the cavity is trapezoidal, square or semicircular, but in order to allow the gas to flow better, in this application, the cross-section of the exhaust groove 41 in the cavity is square. Similarly, the cross-section of the exhaust groove 43 outside the cavity is also square in this application.

[0049] Therefore, when the mouth mold module 20 of the present application is used to produce the bottle mouth, the first locking edge 21 is embedded in the flange 50, and the second locking edge 22 is embedded in the core rod assembly 10 to complete the installation of the mouth mold module 20. Then, the water supply device is connected to the water inlet 33, and the recovery device is connected to the water outlet 32, so that the cooling water flows from the water inlet 33 to the water inlet cooling pipe 312, and then flows through the water inlet connector 314, the main cooling pipe 311, the water outlet cooling pipe 313, and the water outlet connector 315, and finally flows to the water outlet 32 ​​and is discharged through the water outlet 32. During the flow of the cooling water, the cooling water absorbs the heat generated by the bottle mouth molding, thereby preventing the temperature during the bottle mouth molding from being too high and affecting the molding of the bottle mouth. During the bottle mouth molding process, the exhaust part 4 timely discharges the gas in the molding part 1 to prevent the gas from accumulating in the molding part 1. The cooling part 3 simultaneously cools the molding part 1 to ensure that the bottle mouth can be cooled and solidified in time after it is formed.

[0050] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A vent structure for a die module, characterized in that: include: An intracavity exhaust groove, wherein the intracavity exhaust groove is provided on the forming portion of the die module; An air outlet, the air outlet being arranged on a side of the forming portion and being communicated with the exhaust groove in the cavity; The extra-cavity exhaust groove is arranged on the locking portion of the die module, and the extra-cavity exhaust groove is connected with the air outlet to discharge the gas from the die module.

2. The exhaust structure for the die module according to claim 1, characterized in that: The intra-cavity exhaust groove includes a conformal exhaust groove, which is arranged on the inner wall of the forming portion and fits with the thread of the bottle mouth.

3. The exhaust structure for the die module according to claim 2, characterized in that: The intra-cavity exhaust groove also includes a reinforced exhaust groove, which is arranged on the inner wall of the forming part. Both ends of the reinforced exhaust groove are respectively connected to the conformal exhaust groove, and the reinforced exhaust groove is in contact with the support ring of the bottle mouth.

4. The exhaust structure for the die module according to claim 3, characterized in that: The extracavity exhaust groove includes a conical groove, and the conical groove is respectively arranged on the outer ring of the first locking edge, the second locking edge and the installation edge of the locking part.

5. The exhaust structure for the die module according to claim 4, characterized in that: The extracavity exhaust groove further includes a cross-sectional groove, and the cross-sectional groove is provided on the end surfaces of the first locking edge and the second locking edge.

6. The exhaust structure for the die module according to claim 5, characterized in that: The cross-section groove is communicated with the tapered groove.

7. The exhaust structure for the die module according to claim 6, characterized in that: The exhaust portion is provided with a plurality of air outlets, and the air outlets are respectively communicated with the conformal exhaust groove and the reinforced exhaust groove to discharge the gas in the forming portion.

8. The exhaust structure for the die module according to claim 7, characterized in that: The gas outlet is also communicated with the conical groove so as to guide the gas discharged from the forming portion to the outside of the die module through the conical groove and the cross-section groove.

9. The exhaust structure for a die module according to any one of claims 1 to 8, characterized in that: The cross section of the exhaust groove in the cavity is square.

10. The exhaust structure for the die module according to claim 9, characterized in that: The cross section of the extracavity exhaust groove is square.

Images