Injection mold convenient to demold and injection molding process thereof

Abstract

The invention relates to the technical field of injection molds, and provides an injection mold convenient to demold and an injection molding process thereof.The injection mold convenient to demold comprises an upper mold body and a lower mold body, and further comprises a cooling assembly, a forming groove, an injection molding pipeline, an exhaust assembly, a guide assembly and an opening and closing assembly, and the bottom of the upper mold body is matched with the top of the lower mold body; the upper mold and the lower mold are both provided with cooling assemblies, the bottom of the upper mold and the top of the lower mold are both provided with forming grooves, the two forming grooves are matched, the injection molding pipeline is arranged at the top of the upper mold and communicated with the forming grooves, the exhaust assembly is installed on the upper mold, and the guide assembly is installed at the bottom of the upper mold. By means of the technical scheme, the problems that in the prior art, due to the fact that an exhaust port of an injection mold in the injection molding process is likely to be blocked, gas in the injection molding process is difficult to exhaust smoothly, and a finished product encounters a problem in the demolding process are solved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to an injection mold that is easy to demould and an injection molding process thereof. Background Art

[0002] Injection mold is a kind of process equipment specially used for plastic molding processing. It is composed of multiple parts. The mass production of plastic products is achieved through the assembly of these parts. Injection mold is an indispensable part of modern industrial manufacturing. It is widely used in automobile, electronics, home appliances, building materials and other industries. It is one of the important links in the manufacture of plastic products and is usually made of metal.

[0003] If there is a lot of dust or other pollutants in the production environment, these pollutants may enter the exhaust port of the injection mold and accumulate. Or during the injection molding process, the injection speed is too fast, the pressure is too high or too low, and the holding time is too long. These may cause the air in the injection molded product to not be completely discharged, and thus enter the exhaust port and cause the exhaust port to be blocked.

[0004] When the exhaust port is blocked, the gas in the injection molding process is difficult to be discharged smoothly, which will increase the pressure in the injection molding process, thereby extending the injection molding time and affecting the demolding time of the finished product. At the same time, it will also cause a large number of bubbles to exist inside the injection molded parts, which will lead to a decrease in the quality of the injection molded parts and affect production efficiency. Summary of the invention

[0005] The present invention provides an injection mold and an injection molding process that are easy to demold, which solves the problem in the prior art that the exhaust port of the injection mold may be blocked during the injection molding process, making it difficult for the gas in the injection molding process to be discharged smoothly, resulting in problems in demolding the finished product.

[0006] The technical solution of the present invention is as follows:

[0007] An injection mold that is easy to demould comprises an upper mold and a lower mold, wherein the bottom of the upper mold is adapted to the top of the lower mold, and further comprises:

[0008] A cooling component, which is installed on both the upper mold and the lower mold and is used to cool the finished product;

[0009] A molding groove, the bottom of the upper mold and the top of the lower mold are both provided with the molding groove, and the two molding grooves are adapted;

[0010] An injection molding pipeline, the injection molding pipeline is opened on the top of the upper mold, and the injection molding pipeline is connected to the molding groove;

[0011] An exhaust component, the exhaust component is mounted on the upper mold and is used for exhausting gas;

[0012] A guide assembly, the guide assembly is mounted on the bottom of the upper mold and is used for guiding;

[0013] An opening and closing component is installed inside the cooling component and is used to control the opening and closing of the exhaust component.

[0014] Based on the above solution, the cooling assembly includes:

[0015] A first cooling pipeline, the upper mold and the lower mold are provided with the first cooling pipeline, the first cooling pipeline on the upper mold is located at the upper part of the molding groove, and the first cooling pipeline on the lower mold is located at the lower part of the molding groove;

[0016] A second cooling pipeline, the upper mold and the lower mold are both provided with the second cooling pipeline, and the molding groove is located inside the second cooling pipeline;

[0017] A water inlet pipeline, the upper mold is provided with the water inlet pipeline, and the water inlet pipeline is connected with the first cooling pipeline;

[0018] A connecting pipeline, wherein the two first cooling pipelines and the two second cooling pipelines are connected with the connecting pipeline, and the connecting pipeline is located away from the water inlet pipeline;

[0019] A drainage pipeline, the lower mold is provided with the drainage pipeline, and the drainage pipeline is connected with the first cooling pipeline;

[0020] A water passage is installed between the upper mold and the lower mold and is used to connect the two second cooling pipelines.

[0021] On the basis of the above scheme, the water passing part comprises:

[0022] A water hole, the upper mold and the lower mold are both provided with the water hole, the two water holes are respectively connected with the two second cooling pipelines, and the water hole is located between the water inlet pipeline and the drainage pipeline;

[0023] Annular groove, the two water holes are each provided with an annular groove, and the two annular grooves are butted against each other;

[0024] A docking ring is fixedly mounted on the two annular grooves.

[0025] In addition to the above solutions, it also includes:

[0026] A plug-in ring, wherein the plug-in ring is fixedly mounted on one of the docking rings;

[0027] A plug-in slot, the other of the docking rings is provided with the plug-in slot, the plug-in slot is adapted to the plug-in ring;

[0028] The sealing rings are fixedly mounted on one of the butt rings, the plug-in groove is arranged between the two sealing rings, and the sealing ring is in sealing contact with the other butt ring.

[0029] Based on the above solution, the exhaust assembly includes:

[0030] Exhaust pipes, a plurality of exhaust pipes are provided on the upper mold at equal distances, and the exhaust pipes are connected to the molding grooves;

[0031] A fixing ring, wherein each exhaust pipe is fixedly installed with the fixing ring;

[0032] A closing part is installed in each exhaust pipe and is used to control the closing and opening of the exhaust pipe.

[0033] On the basis of the above scheme, the closing part comprises:

[0034] A sealing ring, wherein the bottom of each exhaust pipe is fixedly mounted with the sealing ring;

[0035] A slider, wherein each exhaust pipe is slidably mounted with the slider;

[0036] Ventilation slots, each of the sliders is provided with the ventilation slots;

[0037] A connecting rod, wherein the bottom of each slider is fixedly mounted with the connecting rod;

[0038] A closing plug is fixedly mounted on the bottom of each connecting rod, and the closing plug is adapted to the sealing ring.

[0039] On the basis of the above scheme, the guide assembly comprises:

[0040] Positioning blocks, the four corners of the top of the lower mold are fixedly mounted with the positioning blocks;

[0041] Positioning grooves, the four corners of the bottom of the upper mold are provided with the positioning grooves, and the positioning grooves are adapted to the positioning blocks;

[0042] Guide blocks, two of which are symmetrically and fixedly mounted on the bottom of the upper mold;

[0043] Guide grooves: two guide grooves are provided on the top of the lower mold, and the guide grooves are adapted to the guide blocks.

[0044] The working principle and beneficial effects of the present invention are:

[0045] 1. In the present invention, during the cooling process, after the upper mold and the lower mold are docked, the docking ring on the upper mold is docked with the docking ring on the lower mold. At the same time, the plug-in ring enters the plug-in groove and is combined with stability to play a role in positioning and guiding. Under the action of the two sealing rings, the docking position between the two docking rings can be sealed, avoiding leakage of cooling water when passing through this position, thereby improving the cooling effect.

[0046] 2. In the present invention, during injection molding, excess air can pass through the gap between the sealing ring and the closing plug and be discharged from the exhaust pipe through the ventilation groove. When the plastic melt fills the molding groove, the plastic melt will contact the bottom of the closing plug and push the closing plug upward. At this time, until the closing plug contacts the sealing ring, the exhaust pipe can be closed, thereby improving the stability of injection molding and the quality of the finished product.

[0047] 3. In the present invention, cooling water is squeezed into the connecting hole, and the water entering the connecting hole will enter the inside of the sliding groove. Through the action of water, the sliding frame is pushed to move. At this time, the return spring is compressed until the inclined surface of the sliding frame contacts the abutment block, and the setting of the abutment block pushes the slider to move until the bottom of the slider contacts the fixed ring. At this time, the slider pushes the closing plug out of the sealing ring through the setting of the connecting rod, so that the closing plug is separated from the sealing ring, and the finished product can be taken out, which reduces the resistance during demolding, makes the demolding process smoother, and thus improves the demolding speed.

[0048] 4. In the present invention, by cooperating with the cooling component and the opening and closing component, the opening and closing component can be quickly adjusted during the cooling process, thereby realizing the control of the on and off of the exhaust pipe, making the exhaust more smooth and less likely to clog the exhaust pipe. The exhaust pipe can also be quickly opened during demolding, making demolding smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0051] Figure 2 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0052] Figure 3 It is a schematic diagram of a three-dimensional structure in cross section in the present invention;

[0053] Figure 4 It is a schematic diagram of the structure of the upper mold and the guide assembly in the present invention;

[0054] Figure 5 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at point A in the middle;

[0055] Figure 6 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at B in the middle;

[0056] Figure 7 It is a schematic diagram of the cross-sectional structure of the water-passing portion in the present invention;

[0057] Figure 8 It is a schematic diagram of the structure of the cooperation between the lower mold and the guide assembly in the present invention;

[0058] Fig. 9 It is a cross-sectional structural schematic diagram of the exhaust assembly, the guide assembly and the opening and closing assembly in the present invention;

[0059] Fig.10 For the present invention Fig. 9 A schematic diagram of the partially enlarged structure at C in the middle;

[0060] Fig.11 For the present invention Fig. 9 A schematic diagram of the partially enlarged structure at D in the middle;

[0061] Fig.12 It is a structural schematic diagram of the closing portion in the present invention.

[0062] In the figure: 1. upper mold; 2. lower mold; 3. molding groove; 4. injection molding pipeline; 5. first cooling pipeline; 6. second cooling pipeline; 7. water inlet pipeline; 8. connecting pipeline; 9. drainage pipeline; 10. water hole; 11. annular groove; 12. docking ring; 13. plug-in ring; 14. plug-in groove; 15. sealing ring; 16. exhaust pipe; 17. fixing ring; 18. sealing ring; 19. slider; 20. ventilation groove; 21. connecting rod; 22. closing plug; 23. positioning block; 24. positioning groove; 25. guide block; 26. guide groove; 27. sliding groove; 28. connecting hole; 29. ​​sliding frame; 30. abutment block; 31. reset spring; 32. water outlet pipe; 33. joint; 34. side pipe; 35. control valve. DETAILED DESCRIPTION

[0063] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] Embodiment 1

[0065] like Figures 1 to 12As shown, this embodiment proposes an injection mold that is easy to demold, including an upper mold 1 and a lower mold 2. The bottom of the upper mold 1 is adapted to the top of the lower mold 2, and also includes a cooling component, a molding groove 3, an injection pipeline 4, an exhaust component, a guide component and an opening and closing component. The upper mold 1 and the lower mold 2 are both equipped with cooling components for cooling the finished product. The cooling component includes a first cooling pipeline 5, a second cooling pipeline 6, a water inlet pipeline 7, a connecting pipeline 8, a drainage pipeline 9 and a water passing part. The upper mold 1 and the lower mold 2 are both provided with a first cooling pipeline 5. The first cooling pipeline 5 on the upper mold 1 is located at the upper part of the molding groove 3. The first cooling pipeline 5 on the lower mold 2 is located at the lower part of the molding groove 3. The upper mold 1 and the lower mold 2 are both provided with a second cooling pipeline 6. The molding groove 3 is located inside the second cooling pipeline 6. The upper mold 1 is provided with a water inlet pipeline 7, which is connected to the first cooling pipeline 5. A connecting pipeline 8 is connected between the two first cooling pipelines 5 and the two second cooling pipelines 6. The connecting pipeline 8 is located away from the water inlet pipeline 7. The lower mold 2 is provided with a drainage pipeline 9, which is connected to the first cooling pipeline 5. The water passing part is installed between the upper mold 1 and the lower mold 2 for connecting the two second cooling pipelines 6.

[0066] Specifically, when using the injection mold for injection molding, the upper mold 1 and the lower mold 2 are installed in the working position. At this time, the output end of the injection molding machine is connected to the injection molding pipeline 4, and the injection molding machine is started according to the established injection molding process parameters to inject the molten plastic melt into the molding groove 3 and mold it into an injection molded part. After the injection molding is completed, the cooling cycle is started, and the cooling water source is connected to the water inlet pipeline 7. The water source enters the first cooling pipeline 5 of the upper mold 1 through the water inlet pipeline 7, and then enters the second cooling pipeline 6 of the upper mold 1 through the setting of the connecting pipeline 8. Then, through the setting of the water passing part, it passes through the second cooling pipeline 6 and the first cooling pipeline 5 of the lower mold 2 in turn, and then flows out from the drainage pipeline 9 to carry out the next cycle. After waiting for the injection molded part to cool to the set temperature, the cover can be opened and demoulded. The demoulding speed is improved by the setting of the opening and closing components.

[0067] The above, such as Figures 5 to 7As shown, the water passage portion includes a water hole 10, an annular groove 11 and a docking ring 12. The upper mold 1 and the lower mold 2 are both provided with water holes 10. The two water holes 10 are respectively connected to the two second cooling pipes 6. The water holes 10 are located between the water inlet pipe 7 and the drainage pipe 9. The two water holes 10 are both provided with annular grooves 11. The two annular grooves 11 are butted against each other. The two annular grooves 11 are both fixedly mounted with docking rings 12. It also includes a plug-in ring 13, a plug-in groove 14 and a sealing ring 15. One of the docking rings 12 is fixedly mounted with a plug-in ring 13. The other docking ring 12 is provided with a plug-in groove 14. The plug-in groove 14 is adapted to the plug-in ring 13. Two sealing rings 15 are fixedly mounted on one of the docking rings 12. A plug-in groove 14 is provided between the two sealing rings 15. The sealing ring 15 is sealed and abutted against the other docking ring 12.

[0068] Specifically, after the injection molding is completed, it needs to be cooled. During the cooling process, when the cooling water in the second pipeline of the upper mold 1 needs to enter the second pipeline of the lower mold 2, after the upper mold 1 and the lower mold 2 are docked, the positions of the two annular grooves 11 on the upper mold 1 and the lower mold 2 correspond. At this time, the docking ring 12 on the upper mold 1 is docked with the docking ring 12 on the lower mold 2. At the same time, the plug-in ring 13 enters the plug-in groove 14, and combined with stability, it plays a role in positioning and guiding. Under the action of the two sealing rings 15, the docking position between the two docking rings 12 can be sealed, avoiding leakage of cooling water when passing through this position.

[0069] like Figures 9 to 12 As shown, the bottom of the upper mold 1 and the top of the lower mold 2 are both provided with molding grooves 3, the two molding grooves 3 are adapted, an injection molding pipeline 4 is provided on the top of the upper mold 1, the injection molding pipeline 4 is connected with the molding groove 3, an exhaust component is installed on the upper mold 1 for exhaust, the exhaust component includes an exhaust pipe 16, a fixing ring 17 and a closing part, a plurality of exhaust pipes 16 are provided on the upper mold 1 at equal distances, the exhaust pipes 16 are connected with the molding groove 3, a fixing ring 17 is fixedly installed in each exhaust pipe 16, and a closing part is installed in each exhaust pipe 16 for controlling the closing and opening of the exhaust pipe 16.

[0070] Specifically, during injection molding, the molten plastic melt is injected into the injection pipeline 4 and then injected into the molding groove 3 between the upper mold 1 and the lower mold 2. At this time, as the injection molding continues, the plastic melt in the molding groove 3 continues to increase. At this time, the air will be discharged from the molding groove 3 through the exhaust pipe 16. When the bottom of the closing part contacts the plastic melt, it will be pushed up until the closing part moves to the closed position, and the exhaust pipe 16 can be sealed, thereby reducing the possibility of the exhaust pipe 16 being blocked, and at the same time reducing the impact of poor exhaust during the injection molding process on the quality of the finished product.

[0071] The above, such as Fig.12As shown, the closing portion includes a sealing ring 18, a slider 19, a ventilation groove 20, a connecting rod 21 and a closing plug 22. A sealing ring 18 is fixedly installed at the bottom of each exhaust pipe 16, a slider 19 is slidably installed in each exhaust pipe 16, a ventilation groove 20 is opened on each slider 19, a connecting rod 21 is fixedly installed at the bottom of each slider 19, a closing plug 22 is fixedly installed at the bottom of each connecting rod 21, and the closing plug 22 is adapted to the sealing ring 18.

[0072] Specifically, under normal conditions, under the action of gravity, the bottom of the slider 19 abuts against the top of the fixing ring 17, and the closing plug 22 is now separated from the sealing ring 18. During injection molding, excess air can pass through the gap between the sealing ring 18 and the closing plug 22 and be discharged from the exhaust pipe 16 through the ventilation groove 20. When the plastic melt fills the molding groove 3, the plastic melt will contact the bottom of the closing plug 22 and push the closing plug 22 upward. At this time, until the closing plug 22 contacts the sealing ring 18, the exhaust pipe 16 can be closed.

[0073] The guide assembly is installed at the bottom of the upper mold 1 for guiding. The guide assembly includes a positioning block 23, a positioning groove 24, a guide block 25 and a guide groove 26. The four corners of the top of the lower mold 2 are fixedly installed with positioning blocks 23, and the four corners of the bottom of the upper mold 1 are provided with positioning grooves 24, which are adapted to the positioning blocks 23. Two guide blocks 25 are symmetrically and fixedly installed at the bottom of the upper mold 1, and two guide grooves 26 are provided at the top of the lower mold 2, which are adapted to the guide blocks 25.

[0074] Specifically, through the cooperation between the positioning block 23 and the positioning groove 24, and the cooperation between the guide block 25 and the guide groove 26, the accuracy of the docking between the upper mold 1 and the lower mold 2 can be improved, and the efficiency of the docking between the upper mold 1 and the lower mold 2 can be improved.

[0075] like Fig.10 , Fig.11 As shown, the opening and closing assembly is installed inside the cooling assembly, and is used to control the opening and closing of the exhaust assembly. The opening and closing assembly includes a sliding groove 27, a connecting hole 28, a sliding frame 29, an abutment block 30, a reset spring 31 and a control unit. A sliding groove 27 is opened on each exhaust pipe 16, and a connecting hole 28 is connected between each sliding groove 27 and the second cooling pipeline 6. A sliding frame 29 is slidably and sealedly installed inside each sliding groove 27. The sliding frame 29 is located on the top of the slider 19, and an abutment block 30 is fixedly installed on the top of each slider 19. The abutment block 30 is adapted to the sliding frame 29, and a reset spring 31 is fixedly installed between each sliding frame 29 and the sliding groove 27. The control unit is installed on the drainage pipeline 9, and is used to control the position of the sliding frame 29.

[0076] Specifically, after the injection molding is completed, when the finished product needs to be taken out, the cooling water is squeezed into the connecting hole 28 through the setting of the control unit, and the water entering the connecting hole 28 will enter the inside of the sliding groove 27. The sliding frame 29 is pushed to move by the action of the water. At this time, the reset spring 31 is compressed until the inclined surface of the sliding frame 29 contacts the abutment block 30, and the slider 19 is pushed to move by the setting of the abutment block 30 until the bottom of the slider 19 contacts the fixing ring 17. At this time, the slider 19 pushes the closing plug 22 out of the sealing ring 18 through the setting of the connecting rod 21, so that the closing plug 22 is separated from the sealing ring 18, and the finished product can be taken out, and then the position of the control unit is restored, and under the action of the reset spring 31, the sliding frame 29 is moved back to its original position.

[0077] As mentioned above, the control part includes an outlet pipe 32, a joint 33, a side pipe 34 and a control valve 35. The outlet pipe 32 is connected to the drainage pipe 9, and the water inlet pipe 7 and the end of the outlet pipe 32 are both connected with a joint 33. The outlet pipe 32 is provided with a side pipe 34, and both ends of the side pipe 34 are connected to the outlet pipe 32. The control valve 35 is fixedly installed on the side pipe 34, wherein the outlet pipe 32 is also installed with a control valve 35, and the control valve 35 is located at the lower part of the side pipe 34.

[0078] Specifically, during the cooling process, the control valve 35 on the side pipe 34 is closed, and the control valve 35 on the water outlet pipe 32 is opened. At this time, water passes through the water outlet pipe 32 and is discharged through the joint 33. When the finished product needs to be taken out, the control valve 35 on the water outlet pipe 32 is closed first. At this time, after the water enters the water outlet pipe 32, it will flow through the side pipe 34 before flowing out from the joint 33. The control valve 35 on the side pipe 34 is a pressure valve. When water flows to the input port of the control valve 35 on the side pipe 34, as the water pressure increases, when the water pressure increases to a certain value, the control valve 35 can be pushed open, the water enters the side pipe 34, and flows out from the joint 33.

[0079] To sum up, when using the injection mold for injection molding, the upper mold 1 and the lower mold 2 are installed in the working position. Through the cooperation of the positioning block 23 and the positioning groove 24, and the cooperation of the guide block 25 and the guide groove 26, the accuracy of the docking between the upper mold 1 and the lower mold 2 can be improved, and the efficiency of the docking between the upper mold 1 and the lower mold 2 is improved. At this time, the output end of the injection molding machine is docked with the injection pipeline 4, and the injection molding machine is started according to the established injection molding process parameters, and the molten plastic melt is injected into the molding groove 3 to be molded into an injection molded part.

[0080] During injection molding, the molten plastic melt is injected into the injection molding pipeline 4 and then injected into the molding groove 3 between the upper mold 1 and the lower mold 2. At this time, as the injection molding continues, the plastic melt in the molding groove 3 continues to increase, and the air at this time will be discharged from the molding groove 3 through the exhaust pipe 16. Because under normal conditions, the bottom of the slider 19 abuts against the top of the fixing ring 17, the closing plug 22 is now separated from the sealing ring 18. During injection molding, excess air can pass through the gap between the sealing ring 18 and the closing plug 22 and be discharged from the exhaust pipe 16 through the ventilation groove 20. When the plastic melt fills the molding groove 3, the plastic melt will contact the bottom of the closing plug 22 and push the closing plug 22 upward. At this time, until the closing plug 22 contacts the sealing ring 18, the exhaust pipe 16 can be sealed, reducing the possibility of the exhaust pipe 16 being blocked, and at the same time reducing the impact of poor exhaust during the injection molding process on the quality of the finished product.

[0081] After the injection molding is completed, the cooling cycle is started, and the cooling water source is connected to the water inlet pipeline 7. The water source enters the first cooling pipeline 5 of the upper mold 1 through the water inlet pipeline 7, and then enters the second cooling pipeline 6 of the upper mold 1 through the setting of the connecting pipeline 8. When the cooling water in the second pipeline of the upper mold 1 needs to enter the second pipeline of the lower mold 2, after the upper mold 1 and the lower mold 2 are docked, the positions of the two annular grooves 11 on the upper mold 1 and the lower mold 2 correspond. At this time, the docking ring 12 on the upper mold 1 is docked with the docking ring 12 on the lower mold 2. At the same time, the plug-in ring 13 enters the plug-in groove 14, and combined with stability, it plays a role in positioning and guiding. Under the action of the two sealing rings 15, the docking position between the two docking rings 12 can be sealed, avoiding leakage when the cooling water passes through this position. At this time, the cooling water passes through the second cooling pipeline 6 and the first cooling pipeline 5 of the lower mold 2 in turn, and then flows out from the drainage pipeline 9 to carry out the next cycle. After waiting for the injection molded part to cool to the set temperature, the cover can be opened and demoulded.

[0082] When demoulding, first close the control valve 35 on the water outlet pipe 32. At this time, after the water enters the water outlet pipe 32, it will flow through the side pipe 34 before flowing out from the joint 33. The control valve 35 on the side pipe 34 is a pressure valve. When water flows to the input port of the control valve 35 on the side pipe 34, as the water pressure increases, when the water pressure increases to a certain value, the control valve 35 can be pushed open, the water enters the side pipe 34, and flows out from the joint 33. Due to the increase in water pressure, the cooling water is squeezed into the connecting hole 28, and the water entering the connecting hole 28 will enter the inside of the sliding groove 27. Through the action of water, the cooling water is pushed into the connecting hole 28. The movable sliding frame 29 moves, and the return spring 31 is compressed at this time until the inclined surface of the sliding frame 29 contacts the abutment block 30, and the setting of the abutment block 30 pushes the slider 19 to move until the bottom of the slider 19 contacts the fixed ring 17. At this time, the slider 19 pushes the closing plug 22 out of the sealing ring 18 through the setting of the connecting rod 21, so that the closing plug 22 is separated from the sealing ring 18, and the finished product can be taken out, and then the position of the sliding frame 29 is restored, and under the action of the return spring 31, the sliding frame 29 can be moved back to its original position, thereby improving the demoulding speed.

[0083] Embodiment 2

[0084] On the basis of the first embodiment, this embodiment further discloses an injection molding process that is easy to demold, using the above-mentioned injection mold that is easy to demold, comprising the following steps:

[0085] The first step is installation. The upper mold 1 and the lower mold 2 are installed in the working position by the cooperation between the positioning block 23 and the positioning groove 24, and the cooperation between the guide block 25 and the guide groove 26;

[0086] The second step is injection molding. The output end of the injection molding machine is connected to the injection molding pipeline 4, and the injection molding machine is started according to the established injection molding process parameters to inject the molten plastic melt into the molding groove 3;

[0087] The third step is exhaust. As the plastic melt in the molding groove 3 increases, the air can pass through the gap between the sealing ring 18 and the closing plug 22 and be discharged from the exhaust pipe 16 through the ventilation groove 20.

[0088] The fourth step is closing. The plastic melt contacts the bottom of the closing plug 22, and the closing plug 22 is pushed upward until the closing plug 22 contacts the sealing ring 18, thereby sealing the exhaust pipe 16, reducing the possibility of the exhaust pipe 16 being blocked, and reducing the influence of poor exhaust during the injection molding process on the quality of the finished product;

[0089] The fifth step is cooling, connecting the cooling water source with the water inlet pipeline 7, the water source enters the first cooling pipeline 5 of the upper mold 1 through the water inlet pipeline 7, and then enters the second cooling pipeline 6 of the upper mold 1 through the setting of the connecting pipeline 8;

[0090] Step 6: draining water, the cooling water in the second pipeline of the upper mold 1 enters the second pipeline of the lower mold 2;

[0091] The seventh step is docking. The positions of the two annular grooves 11 on the upper mold 1 and the lower mold 2 correspond. At this time, the docking ring 12 on the upper mold 1 is docked with the docking ring 12 on the lower mold 2. At the same time, the plug-in ring 13 enters the plug-in groove 14 and combines with stability to play a role in positioning and guiding. Under the action of the two sealing rings 15, the docking position between the two docking rings 12 can be sealed well, avoiding the phenomenon of leakage when the cooling water passes through this position;

[0092] Step 8: Cooling water passes through the second cooling pipeline 6 and the first cooling pipeline 5 of the lower mold 2 in sequence, and then flows out from the drainage pipeline 9 to carry out the next cycle;

[0093] The ninth step is to control the pressure. Close the control valve 35 on the outlet pipe 32. After the water enters the outlet pipe 32, it will flow through the side pipe 34 before flowing out from the joint 33. The control valve 35 on the side pipe 34 is a pressure valve. When the water flows to the input port of the control valve 35 on the side pipe 34, as the water pressure increases, when the water pressure increases to a certain value, the control valve 35 can be pushed open, the water enters the side pipe 34, and flows out from the joint 33.

[0094] Step 10: Control: Due to the increase of water pressure, the cooling water is squeezed into the connecting hole 28, and the water entering the connecting hole 28 will enter the interior of the sliding groove 27;

[0095] Step 11: Adjust the position. The sliding frame 29 is pushed to move by the action of water. At this time, the return spring 31 is compressed until the inclined surface of the sliding frame 29 contacts the abutment block 30. The slider 19 is pushed to move by the setting of the abutment block 30 until the bottom of the slider 19 contacts the fixing ring 17. At this time, the slider 19 pushes the closing plug 22 out of the sealing ring 18 through the setting of the connecting rod 21, so that the closing plug 22 is separated from the sealing ring 18, and the finished product can be taken out.

[0096] The twelfth step is to reset. Under the action of the reset spring 31, the sliding frame 29 is moved back to its original position, thereby increasing the demoulding speed.

[0097] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold for easy demoulding, comprising an upper mold (1) and a lower mold (2), wherein the bottom of the upper mold (1) is adapted to the top of the lower mold (2), and characterized in that: Also includes: A cooling component, the upper mold (1) and the lower mold (2) are both equipped with the cooling component, and are used to cool the finished product; A molding groove (3), the bottom of the upper mold (1) and the top of the lower mold (2) are both provided with the molding groove (3), and the two molding grooves (3) are adapted to each other; An injection molding pipeline (4), the injection molding pipeline (4) being opened at the top of the upper mold (1), the injection molding pipeline (4) being connected to the molding groove (3); An exhaust component, the exhaust component is mounted on the upper mold (1) and is used for exhausting air; A guide assembly, the guide assembly being mounted on the bottom of the upper mold (1) and being used for guiding; An opening and closing component is installed inside the cooling component and is used to control the opening and closing of the exhaust component.

2. The injection mold for easy demoulding according to claim 1, characterized in that: The cooling assembly comprises: A first cooling pipeline (5), wherein the upper mold (1) and the lower mold (2) are both provided with the first cooling pipeline (5), the first cooling pipeline (5) on the upper mold (1) is located at the upper part of the molding groove (3), and the first cooling pipeline (5) on the lower mold (2) is located at the lower part of the molding groove (3) A second cooling pipeline (6), wherein the upper mold (1) and the lower mold (2) are both provided with the second cooling pipeline (6), and the molding groove (3) is located inside the second cooling pipeline (6).

3. The injection mold for easy demoulding according to claim 2, characterized in that: The cooling assembly comprises: A water inlet pipeline (7), wherein the upper mold (1) is provided with the water inlet pipeline (7), and the water inlet pipeline (7) is connected to the first cooling pipeline (5); A connecting pipeline (8), wherein the two first cooling pipelines (5) and the two second cooling pipelines (6) are both connected by the connecting pipeline (8), and the location of the connecting pipeline (8) is far away from the water inlet pipeline (7).

4. The injection mold for easy demoulding according to claim 3, characterized in that: The cooling assembly comprises: A drainage pipeline (9), wherein the lower mold (2) is provided with the drainage pipeline (9), and the drainage pipeline (9) is connected to the first cooling pipeline (5); A water passage, the water passage is installed between the upper mold (1) and the lower mold (2) and is used to connect the two second cooling pipelines (6).

5. The injection mold for easy demoulding according to claim 4, characterized in that: The water passing part comprises: A water hole (10), the upper mold (1) and the lower mold (2) are both provided with the water hole (10), the two water holes (10) are respectively connected to the two second cooling pipelines (6), and the water hole (10) is located between the water inlet pipeline (7) and the drainage pipeline (9); An annular groove (11), wherein the two water holes (10) are each provided with an annular groove (11), and the two annular grooves (11) are butted against each other; A docking ring (12) is fixedly mounted on each of the two annular grooves (11).

6. The injection mold for easy demoulding according to claim 5, characterized in that: Also includes: A plug-in ring (13), wherein the plug-in ring (13) is fixedly mounted on one of the docking rings (12); A plug-in slot (14), wherein the other docking ring (12) is provided with the plug-in slot (14), and the plug-in slot (14) is adapted to fit the plug-in ring (13); The sealing ring (15) is provided with two sealing rings (15) fixedly mounted on one docking ring (12), the plug-in groove (14) is provided between the two sealing rings (15), and the sealing ring (15) is in sealing contact with the other docking ring (12).

7. The injection mold for easy demoulding according to claim 6, characterized in that: The exhaust assembly comprises: Exhaust pipes (16), a plurality of exhaust pipes (16) are provided on the upper mold (1) at equal distances, and the exhaust pipes (16) are connected to the molding groove (3); A fixing ring (17), wherein each exhaust pipe (16) is fixedly mounted with the fixing ring (17); A closing part, wherein each exhaust pipe (16) is provided with the closing part, and is used to control the closing and opening of the exhaust pipe (16).

8. The injection mold for easy demoulding according to claim 7, characterized in that: The closure portion comprises: A sealing ring (18), wherein the bottom of each exhaust pipe (16) is fixedly mounted with the sealing ring (18); A slider (19), wherein each exhaust pipe (16) is slidably mounted with the slider (19); A ventilation slot (20), each of the sliders (19) being provided with the ventilation slot (20); A connecting rod (21), wherein the bottom of each of the sliding blocks (19) is fixedly mounted with the connecting rod (21); A closing plug (22), wherein the bottom of each connecting rod (21) is fixedly mounted with the closing plug (22), and the closing plug (22) is adapted to fit the sealing ring (18).

9. The injection mold for easy demoulding according to claim 8, characterized in that: The guide assembly comprises: Positioning blocks (23), the positioning blocks (23) being fixedly mounted at the four corners of the top of the lower mold (2); Positioning grooves (24), the four corners of the bottom of the upper mold (1) are each provided with the positioning grooves (24), the positioning grooves (24) being adapted to fit the positioning blocks (23).

10. The injection mold for easy demoulding according to claim 9, characterized in that: The guide assembly comprises: Guide blocks (25), two guide blocks (25) being symmetrically and fixedly mounted on the bottom of the upper mold (1); Guide grooves (26), two guide grooves (26) are provided on the top of the lower mold (2), and the guide grooves (26) are adapted to fit the guide blocks (25).

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