A counter blow injection molding apparatus and a counter blow injection molding method using the same
By designing a through-shot injection molding equipment, hard and soft rubber can be injection molded on a single machine, solving the problems of low efficiency and high cost in traditional injection molding processes and achieving efficient injection molding of two materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 苏州天鑫达新能源科技有限公司
- Filing Date
- 2026-03-05
- Publication Date
- 2026-06-12
AI Technical Summary
In existing technologies, the hard and soft plastic parts need to be injection molded on different injection molding machines, resulting in low work efficiency and high equipment costs.
By employing a through-shot injection molding machine, and through the design of the mold frame assembly, main injection stage assembly, and auxiliary injection stage assembly, two injection molding materials can be completed on one machine. By utilizing the coordinated work of components such as slide rails, slide blocks, rotary support plates, and servo motors, the mold closing and opening operations of hard and soft plastics can be achieved.
Injection molding of both hard and soft plastics can be completed on a single machine, reducing product turnover and equipment costs while improving work efficiency.
Smart Images
Figure CN122185486A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a through-shot injection molding equipment and a through-shot injection molding method using the equipment, belonging to the field of injection molding production equipment and injection molding process technology. Background Technology
[0002] Some electronic or plastic products often require injection molding, which involves using an injection molding machine and matching molds. Some products contain two different materials, such as... Figure 1 The product shown includes a hard plastic part 1 and a soft plastic part 2. According to the traditional injection molding process, the hard plastic part 1 and the soft plastic part 2 need to be injection molded in different injection molding machines. After the hard plastic part 1 is injection molded on one injection molding machine, the product is then transferred to another injection molding machine to injection mold the soft plastic part 2. This requires two injection molding machines and involves product turnover, which reduces work efficiency and increases equipment costs. Summary of the Invention
[0003] The main technical problem solved by this invention is to provide a through-shot injection molding equipment that can perform injection molding of two different injection materials on one machine, thereby reducing product turnover and equipment costs and improving work efficiency.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A through-shot injection molding equipment is provided, including a mold frame assembly. A main injection stage assembly and a secondary injection stage assembly are respectively arranged on both sides of the mold frame assembly. The mold frame assembly includes a mold frame. A fixed mold plate mechanism is arranged at one end of the mold frame near the main injection stage assembly, and a moving mold plate mechanism is arranged at the other end of the mold frame near the secondary injection stage assembly. An intermediate plate mechanism is arranged between the fixed mold plate mechanism and the moving mold plate mechanism. The fixed mold plate mechanism includes a fixed mold plate and a horizontally arranged mold-moving cylinder. A first forming mold plate is installed on the fixed mold plate. The mold-moving cylinder includes a mold-moving cylinder piston rod, and a guide rod is fixedly connected to the outer end of the piston rod. The moving mold plate mechanism includes a moving mold plate. A second forming mold plate and a brake mechanism are arranged on the moving mold plate. The brake mechanism includes a brake nut and two flat... The system includes a brake disc and a rotary brake cylinder that drives the opening and closing of the two brake discs. The brake nut has external threads, and the two brake discs are screwed onto the brake nut through the threads. The guide rod points between the two brake discs. A horizontal slide rail is arranged on the mold frame, and the bottom of the moving template is slidably arranged on the slide rail. The intermediate plate mechanism includes a middle mounting plate. A third forming template is arranged on the side of the middle mounting plate near the fixed template mechanism, and a fourth forming template is arranged on the side of the middle mounting plate near the moving template mechanism. When the first forming template and the third forming template are closed, a first mold is formed. When the second forming template and the fourth forming template are closed, a second mold is formed. A rotary support plate is arranged at the bottom of the middle mounting plate, and a slide block is arranged below the rotary support plate. The rotary support plate is rotatably arranged on the slide block, and the slide block is slidably arranged on the slide rail.
[0005] Preferably, the mold frame is provided with an intermediate plate mold-moving cylinder for driving the slide block to slide on the slide rail.
[0006] Preferably, the slide is equipped with a servo motor for driving the rotary support plate to rotate.
[0007] Preferably, the mold frame is provided with a pin cylinder, the outer circumferential surface of the rotary support plate is provided with a groove, and the pin cylinder includes a pin cylinder piston rod, which is matched with the groove.
[0008] Preferably, the main injection stage assembly includes a main injection stage frame, on which a main injection stage injection unit and a main injection stage material tube unit are provided. The main injection stage injection unit includes a main injection stage melting chamber and a main injection stage injection cylinder. The main injection stage material tube unit includes a main injection stage injection material tube. A forming part is provided on the first forming template. One end of the main injection stage injection material tube is connected to the forming part of the first forming template, and the other end of the main injection stage injection material tube is connected to the main injection stage melting chamber. The main injection stage injection cylinder includes a main injection stage injection cylinder piston, which extends into the main injection stage melting chamber.
[0009] Preferably, the auxiliary injection stage assembly includes an auxiliary injection stage frame, on which an auxiliary injection stage injection unit and an auxiliary injection stage material tube unit are provided. The auxiliary injection stage injection unit includes an auxiliary injection stage melting chamber and an auxiliary injection stage hydraulic cylinder. The auxiliary injection stage material tube unit includes an auxiliary injection stage material tube. A forming part is provided on the second forming template. One end of the auxiliary injection stage material tube is connected to the forming part of the second forming template, and the other end of the auxiliary injection stage material tube is connected to the auxiliary injection stage melting chamber. The auxiliary injection stage hydraulic cylinder includes an auxiliary injection stage hydraulic cylinder piston, which extends into the auxiliary injection stage melting chamber.
[0010] Preferably, the rotary brake cylinder includes a brake cylinder piston rod, the outer end of which is fixedly connected to a brake disc, the outer end of which is perpendicular to the brake disc, and a connecting rod is provided between the two brake discs.
[0011] Preferably, it also includes a control unit, which includes a PLC controller or a microcomputer controller. The mold moving cylinder, rotary brake cylinder, intermediate plate mold moving cylinder, pin cylinder, main injection table injection cylinder, auxiliary injection table injection cylinder and servo motor are respectively connected to the control unit through wires.
[0012] The present invention also provides a through-shot injection molding method using the above-described through-shot injection molding equipment, comprising the following steps: (1) The working cylinder of the intermediate plate moves the sliding block on the slide rail, which drives the middle mounting plate to move closer to the fixed template mechanism. The third molding template and the first molding template are closed. The first injection material is heated to the melting state in the melting chamber of the main injection stage. The main injection stage injection cylinder works to inject the first injection material into the first molding template through the injection tube of the main injection stage. The first injection material is formed in the molding part of the third molding template and the first molding template. Then the third molding template and the first molding template are opened. The third molding template leaves the first molding template, and the injection molded product remains on the third molding template. (2) The servo motor drives the rotary support plate to rotate, so that the middle mounting plate, the third molding template and the fourth molding template rotate 180° at the same time. The mold moving cylinder works, the piston rod of the mold moving cylinder extends and drives the guide rod to extend. One end of the guide rod extends into the space between the two brake discs. The rotating brake cylinder drives the brake disc to rotate on the brake nut and move closer. The two brake discs hold the guide rod. The piston rod of the mold moving cylinder retracts and pulls the moving template closer to the middle mounting plate. The second molding template and the fourth molding template close the mold. The second type of injection material is heated to a molten state in the melt chamber of the auxiliary injection stage. The auxiliary injection stage injection cylinder works to inject the second type of injection material into the fourth molding template through the injection tube of the auxiliary injection stage. The second type of injection material is formed in the molding part of the fourth molding template and the second molding template. Then the fourth molding template and the second molding template open the mold. The fourth molding template leaves the second molding template, and the injection product remains on the fourth molding template. (3) The ejection mechanism on the fourth molding template ejects the injection molded product from the fourth molding template and removes the injection molded product by a robot or manually.
[0013] The beneficial effects of the present invention are: using the through-jet injection molding equipment of the present invention, two different injection molding materials can be injection molded on one through-jet injection molding equipment, such as injection molding of hard plastic parts and soft plastic parts of a product, which reduces product turnover and equipment costs and improves work efficiency. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the structure of the injection-molded product in an embodiment of the butt-jet injection molding equipment of the present invention; Figure 2 This is a front view of the injection molding equipment of the present invention; Figure 3 This is a top view of the injection molding equipment of the present invention. Detailed Implementation
[0015] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] Please see Figures 1 to 3The present invention includes: a through-shot injection molding equipment, comprising a mold frame assembly 3, a main injection stage assembly 4 and a secondary injection stage assembly 5 respectively disposed on both sides of the mold frame assembly 3, the mold frame assembly 3 including a mold frame 6, a fixed mold plate mechanism 7 disposed at one end of the mold frame 6 near the main injection stage assembly 4, a movable mold plate mechanism 8 disposed at one end of the mold frame 6 near the secondary injection stage assembly 5, and an intermediate plate mechanism 9 disposed between the fixed mold plate mechanism 7 and the movable mold plate mechanism 8, wherein the fixed mold plate... Mechanism 7 includes a fixed template 10 and a horizontally arranged mold-moving cylinder 11. A first forming template 12 is mounted on the fixed template 10. The mold-moving cylinder 11 includes a piston rod 13, and a guide rod 14 is fixedly connected to the outer end of the piston rod 13. The moving template mechanism 8 includes a moving template 15, on which a second forming template 16 and a brake mechanism 17 are arranged. The brake mechanism 17 includes a brake nut 18, two parallel brake discs 19, and a drive mechanism for driving the two brake discs. The rotating brake cylinder 20 opens and closes the brake disc 19. The brake nut 18 has external threads. Two brake discs 19 are screwed onto the brake nut 18 via these threads. The guide rod 14 points between the two brake discs 19. A horizontal slide rail 21 is horizontally arranged on the mold frame 6. The bottom of the moving template 15 is slidably mounted on the slide rail 21. The intermediate plate mechanism 9 includes a middle mounting plate 22. A third forming template 23 is arranged on the side of the middle mounting plate 22 near the fixed template mechanism 7. A fourth forming template 24 is provided on the side of the middle mounting plate 22 near the moving template mechanism 8. When the first forming template 12 and the third forming template 23 are closed, a first mold is formed. When the second forming template 16 and the fourth forming template 24 are closed, a second mold is formed. A rotary support plate 25 is provided at the bottom of the middle mounting plate 22. A slide block 26 is provided below the rotary support plate 25. The rotary support plate 25 is rotatably mounted on the slide block 26. The slide block 26 is slidably mounted on the slide rail 21.
[0017] The mold frame 6 is equipped with an intermediate plate mold moving cylinder 27 for driving the slide block 26 to slide on the slide rail 21.
[0018] The slide block 26 is equipped with a servo motor (marked in the figure) for driving the rotary support plate 25 to rotate.
[0019] The mold frame 6 is equipped with a pin cylinder 28, and the outer circumferential surface of the rotary support plate 25 is provided with a groove 29. The pin cylinder 28 includes a pin cylinder piston rod 30, which is matched with the groove 29. When the rotary support plate 25 rotates to the point where the groove 29 is opposite to the pin cylinder piston rod 30, the pin cylinder piston rod 30 can be inserted into the groove 29 to fix the rotary support plate 25. Generally, this is the position where the rotary support plate 25 has rotated 180°.
[0020] The main injection stage assembly 4 includes a main injection stage frame 31, on which a main injection stage injection unit 32 and a main injection stage material tube unit 33 are provided. The main injection stage injection unit 33 includes a main injection stage melting chamber 34 and a main injection stage injection cylinder 35. The main injection stage material tube unit 33 includes a main injection stage injection material tube 36. A forming part is provided on the first forming template 12. One end of the main injection stage injection material tube 36 is connected to the forming part of the first forming template 12, and the other end of the main injection stage injection material tube 36 is connected to the main injection stage melting chamber 35. The main injection stage injection cylinder 35 includes a main injection stage injection cylinder piston, which extends into the main injection stage melting chamber 34.
[0021] The auxiliary injection stage assembly 5 includes an auxiliary injection stage frame 37, on which an auxiliary injection stage injection unit 38 and an auxiliary injection stage material tube unit 39 are provided. The auxiliary injection stage injection unit 38 includes an auxiliary injection stage melting chamber 40 and an auxiliary injection stage injection cylinder 41. The auxiliary injection stage material tube unit 39 includes an auxiliary injection stage injection material tube 42. A forming part is provided on the second forming template 16. One end of the auxiliary injection stage injection material tube 42 is connected to the forming part of the second forming template 16, and the other end of the auxiliary injection stage injection material tube 42 is connected to the auxiliary injection stage melting chamber 40. The auxiliary injection stage injection cylinder 41 includes an auxiliary injection stage injection cylinder piston, which extends into the auxiliary injection stage melting chamber 40.
[0022] The rotary brake cylinder 20 includes a brake cylinder piston rod. The outer end of the brake cylinder piston rod is fixedly connected to a brake disc 19. The outer end of the brake cylinder piston rod is perpendicular to the brake disc 19. A connecting rod 43 is provided between the two brake discs 19. The brake disc 19 can slide on the connecting rod 43. The rotary brake cylinder 20 drives one brake disc 19 to rotate and move on the brake nut 18 at the same time. The other brake disc 19 rotates and moves on the connecting rod 43 and the brake nut 18.
[0023] It also includes a control unit 44, which includes a PLC controller or a microcomputer controller. The mold moving cylinder 11, the rotary brake cylinder 20, the intermediate plate mold moving cylinder 27, the pin cylinder 28, the main injection table injection cylinder 35, the auxiliary injection table injection cylinder 41, and the servo motor are respectively connected to the control unit 44 through wires.
[0024] The through-jet injection molding method of the present invention uses the above-described through-jet injection molding equipment to perform product injection molding, and includes the following steps: (1) The working of the intermediate plate mold moving cylinder 27 drives the slide block 26 to slide on the slide rail 21, which drives the middle mounting plate 22 to move closer to the fixed template mechanism 7. The third molding template 23 and the first molding template 12 are closed. The first type of injection molding material, i.e., the hard plastic material, is heated to a molten state in the melting chamber 34 of the main injection stage. The main injection stage injection cylinder 35 works to inject the hard plastic material into the first molding template 12 through the injection pipe 36 of the main injection stage. The first type of injection molding material is formed in the molding part of the third molding template 23 and the first molding template 12. Then the third molding template 23 and the first molding template 12 are opened. The third molding template 23 leaves the first molding template 12, and the injection molded product remains on the third molding template 23. (2) The servo motor drives the rotary support plate 25 to rotate, causing the middle mounting plate 22, the third forming template 23, and the fourth forming template 24 to rotate 180° simultaneously. The mold moving cylinder works 11, and the piston rod 13 of the mold moving cylinder extends, driving the guide rod 14 to extend. One end of the guide rod 14 extends between the two brake discs 19. The rotating brake cylinder 20 drives the brake discs 19 to rotate on the brake nut 18 and move closer. The two brake discs 19 hold the guide rod 14. The piston rod 13 of the mold moving cylinder retracts and pulls the moving template 15 closer to the middle mounting plate 22. The second forming template 16 and the fourth forming template 24 move closer together. The mold template 24 is closed. The second type of injection molding material, namely soft rubber material, is heated to a molten state in the melting chamber 40 of the auxiliary injection stage. The injection cylinder 41 of the auxiliary injection stage works to inject the soft rubber material into the fourth molding template 24 through the injection tube 42 of the auxiliary injection stage. The second type of injection molding material is formed in the molding part of the fourth molding template 24 and the second molding template 16. Then the fourth molding template 24 and the second molding template 16 are separated. The fourth molding template 24 leaves the second molding template 16, and the injection molded product remains on the fourth molding template 24. In this way, the injection molded product has completed the injection molding of the hard rubber part and the soft rubber part. (3) The ejection mechanism (not marked in the figure) on the fourth molding template 24 ejects the injection molded product on the fourth molding template 24 and removes the injection molded product by a robot or manually.
[0025] The through-shot injection molding equipment of the present invention can perform injection molding of two different injection materials on one machine, such as injection molding of hard plastic parts and soft plastic parts of a product, thereby reducing product turnover and equipment costs and improving work efficiency.
[0026] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A through-shot injection molding machine, comprising a mold frame assembly, wherein a main injection stage assembly and a secondary injection stage assembly are respectively disposed on both sides of the mold frame assembly, characterized in that: The mold frame assembly includes a mold frame. A fixed template mechanism is located at one end of the mold frame near the main injection stage assembly, and a moving template mechanism is located at the other end of the mold frame near the auxiliary injection stage assembly. An intermediate plate mechanism is provided between the fixed template mechanism and the moving template mechanism. The fixed template mechanism includes a fixed template and a horizontally arranged mold-moving cylinder. A first forming template is mounted on the fixed template. The mold-moving cylinder includes a piston rod, the outer end of which is fixedly connected to a guide rod. The moving template mechanism includes a moving template, a second forming template, and a brake mechanism. The brake mechanism includes a brake nut, two parallel brake discs, and a rotary brake cylinder for driving the opening and closing of the two brake discs. A [missing information - likely a component or feature] is provided on the brake nut. The external thread has two brake discs screwed onto the brake nut. The guide rod points between the two brake discs. A horizontal slide rail is provided on the mold frame. The bottom of the moving template is slidably mounted on the slide rail. The intermediate plate mechanism includes a middle mounting plate. A third forming template is provided on the side of the middle mounting plate near the fixed template mechanism. A fourth forming template is provided on the side of the middle mounting plate near the moving template mechanism. When the first forming template and the third forming template are closed, a first mold is formed. When the second forming template and the fourth forming template are closed, a second mold is formed. A rotary support plate is provided at the bottom of the middle mounting plate. A slide block is provided below the rotary support plate. The rotary support plate is rotatably mounted on the slide block. The slide block is slidably mounted on the slide rail.
2. The through-shot injection molding equipment according to claim 1, characterized in that, The mold frame is equipped with an intermediate plate moving cylinder for driving the slide block to slide on the slide rail.
3. The through-shot injection molding equipment according to claim 2, characterized in that, The slide is equipped with a servo motor for driving the rotary support plate to rotate.
4. The through-shot injection molding equipment according to claim 3, characterized in that, The mold frame is equipped with a pin cylinder, and the outer circumferential surface of the rotary support plate is provided with a groove. The pin cylinder includes a pin cylinder piston rod, which is matched with the groove.
5. The through-shot injection molding equipment according to claim 4, characterized in that, The main injection stage assembly includes a main injection stage frame, on which a main injection stage injection unit and a main injection stage material tube unit are arranged. The main injection stage injection unit includes a main injection stage melting chamber and a main injection stage injection cylinder. The main injection stage material tube unit includes a main injection stage injection material tube. A forming part is provided on the first forming template. One end of the main injection stage injection material tube is connected to the forming part of the first forming template, and the other end of the main injection stage injection material tube is connected to the main injection stage melting chamber. The main injection stage injection cylinder includes a main injection stage injection cylinder piston, which extends into the main injection stage melting chamber.
6. The through-shot injection molding equipment according to claim 5, characterized in that, The auxiliary injection stage assembly includes an auxiliary injection stage frame, on which an auxiliary injection stage injection unit and an auxiliary injection stage material tube unit are mounted. The auxiliary injection stage injection unit includes an auxiliary injection stage melting chamber and an auxiliary injection stage hydraulic cylinder. The auxiliary injection stage material tube unit includes an auxiliary injection stage material tube. A forming part is provided on the second forming template. One end of the auxiliary injection stage material tube is connected to the forming part of the second forming template, and the other end of the auxiliary injection stage material tube is connected to the auxiliary injection stage melting chamber. The auxiliary injection stage hydraulic cylinder includes an auxiliary injection stage hydraulic cylinder piston, which extends into the auxiliary injection stage melting chamber.
7. The through-shot injection molding equipment according to claim 6, characterized in that, The rotary brake cylinder includes a brake cylinder piston rod. The outer end of the brake cylinder piston rod is fixedly connected to a brake disc. The outer end of the brake cylinder piston rod is perpendicular to one of the brake discs. A connecting rod is provided between the two brake discs.
8. The through-shot injection molding equipment according to claim 7, characterized in that, It also includes a control unit, which includes a PLC controller or a microcomputer controller. The mold moving cylinder, rotary brake cylinder, intermediate plate mold moving cylinder, pin cylinder, main injection table injection cylinder, auxiliary injection table injection cylinder and servo motor are respectively connected to the control unit through wires.
9. A method for through-shot injection molding using the through-shot injection molding equipment of claim 8, characterized in that, Includes the following steps: (1) The working cylinder of the intermediate plate moves the sliding block on the slide rail, which drives the middle mounting plate to move closer to the fixed template mechanism. The third molding template and the first molding template are closed. The first injection material is heated to the melting state in the melting chamber of the main injection stage. The main injection stage injection cylinder works to inject the first injection material into the first molding template through the injection tube of the main injection stage. The first injection material is formed in the molding part of the third molding template and the first molding template. Then the third molding template and the first molding template are opened. The third molding template leaves the first molding template, and the injection molded product remains on the third molding template. (2) The servo motor drives the rotary support plate to rotate, so that the middle mounting plate, the third molding template and the fourth molding template rotate 180° at the same time. The mold moving cylinder works, the piston rod of the mold moving cylinder extends and drives the guide rod to extend. One end of the guide rod extends into the space between the two brake discs. The rotating brake cylinder drives the brake disc to rotate on the brake nut and move closer. The two brake discs hold the guide rod. The piston rod of the mold moving cylinder retracts and pulls the moving template closer to the middle mounting plate. The second molding template and the fourth molding template close the mold. The second type of injection material is heated to a molten state in the melt chamber of the auxiliary injection stage. The auxiliary injection stage injection cylinder works to inject the second type of injection material into the fourth molding template through the injection tube of the auxiliary injection stage. The second type of injection material is formed in the molding part of the fourth molding template and the second molding template. Then the fourth molding template and the second molding template open the mold. The fourth molding template leaves the second molding template, and the injection product remains on the fourth molding template. (3) The ejection mechanism on the fourth molding template ejects the injection molded product from the fourth molding template and removes the injection molded product by a robot or manually.