Injection molding machine and injection molding method for molding different products based on different injection amounts

Abstract

The application provides an injection molding machine and method for injecting different products based on different injection amounts by using the same upper mold. When two products need to be injected, the lower mold plate is moved, and then the two lower molds are aligned with the upper mold in sequence. By controlling the different injection amounts in the two processes, two products with different sizes can be formed in the two lower molds. After cooling and opening of the upper and lower molds, a horizontal moving assembly pulls one injection body in the horizontal direction, so that the one injection body is separated from the other injection body. Then, a vertical lifting assembly lifts the carrier in the vertical direction, so that the support protruding ring on the mold core is separated from the mold core, and the support protruding ring lifts the formed product and separates it from the mold core.

Description

Technical Field

[0001] This invention relates to the field of injection molding machine technology, and more specifically to an injection molding machine and injection molding method for molding different products based on different injection volumes using the same mold. Background Technology

[0002] Injection molding machines are the main equipment used to mold thermoplastic or thermosetting plastics into various shapes of plastic products through molds. Their core function is to melt granular plastic raw materials and inject them into the mold. After cooling and solidification, the desired shape of the plastic product is obtained. Through the injection molding process, the plastic material that is completely melted by the screw is injected into the mold cavity under high pressure. After cooling and solidification, the molded product is obtained, such as transparent plastic cups and their lids.

[0003] For example, Chinese patent application No. 202410771818.7, published on November 8, 2024, discloses a transparent plastic cup lid injection molding machine and its operating method. The machine includes a support base, with a screw injection molding machine body fixedly connected to the upper left side of the support base. A accumulator cylinder is fixedly connected to the right end of the screw injection molding machine body. A one-way valve is fixedly connected between the top of the accumulator cylinder and the screw injection molding machine body. The transparent plastic cup lid injection molding machine consists of an extrusion adjustment mechanism and a mold switching mechanism. A motor drives the mold switching mechanism, causing the support plate to rotate 90 degrees in stages with four sets of upper and lower molds, switching their positions. After the upper and lower mold positions are switched, a T-shaped pressure plate from the guide sleeve presses the upper and lower molds on the left side against a conical nozzle for injection molding. Meanwhile, the upper and lower molds on the right side of the support tube open and unload. This cyclical operation improves injection molding efficiency.

[0004] The aforementioned literature describes adjusting the material storage space between the main and secondary pressure plates by coordinating components such as the adjusting screw sleeve, main pressure plate, and support ring. This, in turn, adjusts the distance between the conical nozzle on the extrusion tube and the upper mold to control the injection volume. However, when two combined products need to be injection molded, the two products have different dimensions and mating relationships. For example, an outer cup may have an inner cup inside it, and there may be an assembly relationship between the inner and outer cups. In this case, the injection volume cannot be accurately controlled. Furthermore, after different products are formed by controlling different injection volumes, the products on different injection molding machines need to be demolded, moved, and then assembled separately, resulting in a large and complex injection molding machine. Summary of the Invention

[0005] The purpose of this invention is to provide an injection molding machine and injection method for injection molding different products using the same upper mold with different injection volumes. This allows for the injection of different amounts of plastic into different lower molds using the same upper mold to form modular products. The products have a simple structure, small size, and improved injection molding efficiency.

[0006] This invention provides an injection molding machine for molding different products using the same upper mold and different injection volumes. The machine includes an injection mold mounted on the injection molding machine. Each injection mold includes an upper mold and two lower molds that match the upper mold. The upper mold is fixedly connected to the upper platen of the injection molding machine, and the lower molds are fixedly connected to the lower platen of the injection molding machine. The two lower platens are movable relative to the upper platen. Each lower mold includes a carrier, a core body, a support body, a transverse component, and two injection mold bodies mounted on the carrier. The opposing injection mold bodies and countersunk holes mounted on the carrier form a receiving cavity. The cavity is equipped with a supporting protrusion ring. A transverse moving component is provided on one side of the carrier of the lower mold. The transverse moving components of the two lower mold plates are arranged opposite each other. The transverse moving component is connected to the injection molding body and drives the injection molding body to move closer or further away. A mold core is provided on the mold core body located below the carrier. After the mold core passes through the cavity, it forms a material cavity with the injection molding body, the supporting protrusion ring sleeved on the mold core, and the upper mold. The material filling cavities of the two lower molds are different. A lifting component is provided on the support body located below the mold core body. After the lifting component passes through the mold core body, it abuts against the mold core body and forms a separation surface at the abutment point with the mold core body.

[0007] The above setup, with the upper mold fixedly connected to the upper platen of the injection molding machine and two lower molds, allows for the injection of two products. When two products need to be injection molded, the lower molds can be moved relative to the upper platen, or the upper platen can be moved while the two lower molds remain stationary. This aligns the two lower molds with the upper mold sequentially. By controlling the injection volumes at different times, two products of different sizes can be formed in the cavities of the two lower molds. After cooling, the upper and lower molds are separated to open the mold. A horizontal movement component pulls one injection mold body horizontally, separating or bringing it closer to the other injection mold body for demolding or mold closing. Then, a lifting component vertically lifts the support body, separating the support ring fitted onto the mold core from the mold core. The supporting convex ring lifts the molded product and separates it from the mold core. Because one upper mold and two lower molds are used to form two products of different sizes, and each lower mold is equipped with only one transverse component, and the transverse components of the two lower molds are set opposite each other, and one transverse component realizes the separation and approach of the two injection mold bodies, the lower mold does not need multiple transverse components to separate and approach the two injection mold bodies, so the overall lower mold volume is smaller and the structure is simpler. At the same time, the transverse components of the two lower molds are set opposite each other, which can further reduce the volume of the injection molding machine. Different injection volumes can be controlled by moving one upper mold relative to the lower mold. Moreover, injection molding of products of different sizes can be realized simply by setting the upper and lower molds relative to each other, thus improving injection molding efficiency.

[0008] Furthermore, a groove is formed between the support body and the mold core body, and a movable plate and a lifting component fixedly connected to the movable plate are provided in the groove.

[0009] Furthermore, the upper mold includes a fixed plate, a positioning ring, a nozzle, an upper mold body, a positioning sleeve, and a fixing block. The fixed plate has a first step and a second step on its lower end face, with the diameter of the first step being larger than that of the second step. The upper end of the positioning sleeve has a protruding ring that matches the second step. The lower end of the positioning sleeve passes through the second step and then through the fixed plate. The nozzle that matches the positioning sleeve is fitted into the positioning sleeve. The protruding ring abuts against the second step. The lower end of the positioning ring is fitted into the protruding ring and abuts against the first step. The upper end of the positioning ring protrudes from the upper end face of the fixed plate.

[0010] The above configuration allows the positioning sleeve to be installed in the upper mold, and the positioning sleeve is limited by the convex ring and the second step of the fixing plate.

[0011] Furthermore, the upper mold body is located below the fixed plate. The upper mold body has a receiving groove 1 that matches two oppositely arranged injection mold bodies and a receiving groove 2 that matches the fixed block, arranged sequentially from the lower end to the upper end. The diameter of the receiving groove 1 is larger than the diameter of the receiving groove 2. The fixed block has a first countersunk hole that matches the positioning sleeve. The lower end of the positioning sleeve, which passes through the fixed plate, is embedded in the upper mold body and abuts against the first countersunk hole of the fixed block. The lower end of the fixed block extends downward to form a convex ring. The lower end of the nozzle that is fitted into the positioning sleeve passes through the fixed block and is flush with the convex ring, and communicates with the material cavity.

[0012] The above setup, through the combined action of the positioning ring and the fixing block, can limit the positioning sleeve in the vertical direction after it is installed and embedded in the fixing plate and the upper mold body. As a result, after the nozzle is put into the positioning sleeve, it can be set flush with the protrusion at the lower end of the fixing block, so as to facilitate the injection of molding material into the material cavity.

[0013] Furthermore, the two lower molds are lower mold one and lower mold two. Lower mold one includes a carrier body one, a mold core body one, a support body one, a transverse moving component one, and two injection mold bodies one disposed on the carrier body one. The upper end of the carrier body one is provided with two or more guide pillars. The carrier body one is provided with a through groove one. The injection mold bodies one are disposed in the through groove one. After the two injection mold bodies one move closer to each other, the upper ends of the two injection mold bodies one form a second countersunk hole that matches the convex ring. The two ends of the injection mold bodies one are provided with bosses one. The two sides of the through groove one are provided with sliding grooves one that match the bosses one. The bottom side of the through groove one is recessed downward to form a third step.

[0014] The above settings facilitate the mold body to close with the support body through the guide pillars, while the slide groove facilitates the sliding of the injection mold body within the slide groove.

[0015] Furthermore, the transverse moving assembly is disposed on one side of the carrier body. The transverse moving assembly includes a driving device, a mounting plate, and two or more connecting rods, fixing rods, springs, and mounting rods. The driving device is fixedly connected to the mounting plate, and its output end passes through the mounting plate and connects to one side of the injection mold body. One end of the fixing rod passes through the mounting plate and connects to one side of the carrier body. The other end of the fixing rod is provided with a limiting ring, which limits the mounting plate fitted onto the fixing rod. The springs fitted onto the fixing rod... The ends are respectively connected to one side of the mounting plate and one side of the carrier. One end of the connecting rod is located on both sides of the output end of the drive device. It passes through the side of the injection mold body near the drive device to the side of the injection mold body away from the drive device. The connecting rod is slidably connected to the injection mold body. The other end of the connecting rod is connected to the mounting plate. The mounting rod passes through the side of another injection mold body away from the injection mold body to the side of another injection mold body near the injection mold body. It is fixedly connected to one end of the connecting rod, so that the mounting rod, the connecting rod, and the other injection mold body are connected.

[0016] In the above configuration, after the product cools, when the two injection molds need to move away from each other, the drive device pulls one injection mold towards the side closer to the mounting plate. Since the drive device is fixed to the mounting plate, and the mounting plate is sleeved on the fixed rod and has a compressible spring that slides on the fixed rod, the principle of action and reaction forces causes the drive device to move relative to the injection mold. This causes the drive device to move the mounting plate towards the support body on the fixed rod and compress the spring. Simultaneously, the connecting rod moves the other injection mold away from the first injection mold, thus separating the two injection molds and facilitating demolding. When two injection molds need to move closer together for assembly, the drive device pushes one injection mold to move away from the mounting plate, causing the drive device to move in the opposite direction relative to the injection mold. Simultaneously, under the combined action of the compression spring, the drive device moves the mounting plate away from the support body on the fixed rod. During this process, the spring gradually extends, and the connecting rod moves the other injection mold closer to the first injection mold. This allows the two injection molds to move closer together and assemble. After assembly, the spring returns to its original length, and the limiting ring on the fixed rod limits the mounting plate, preventing the assembled injection molds from moving horizontally.

[0017] Furthermore, the lower end face of the first carrier abuts against the upper end face of the first mold core to form a separation surface. The first mold core is provided with a first mold core and a fourth countersunk hole. One end of the first mold core is embedded and connected in the fourth countersunk hole. A first supporting ring is provided in the third step. The upper end of the first supporting ring protrudes and is provided with a through groove on the bottom side. The lower ends of the two injection mold bodies after relative movement and approach form a receiving cavity that matches the first supporting ring. The other end of the first mold core passes through the first carrier and the first supporting ring in sequence and is embedded in the two injection mold bodies, forming a material cavity with the first supporting ring, the two injection mold bodies, and the ring respectively.

[0018] With the above configuration, after the two injection mold bodies move away from each other and separate, the lifting component set on the support body can lift the carrier body, thereby driving the support ring to move upward and exert a force on the cooled product, causing the product to move upward relative to the mold core and thus separate from the mold core.

[0019] Furthermore, a groove is formed between the support body 1 and the mold core 1. A movable plate 1 and a lifting assembly 1 fixedly connected to the movable plate 1 are provided in the groove 1. The lifting assembly 1 includes two or more push rods 1, guide rods 1, driving components and springs 2. One end of the push rod 1 is fixedly connected to the movable plate 1, and the other end of the push rod 1 passes through the mold core 1 and abuts against the separation surface. The two ends of the springs 2, which are sleeved on the push rods 1, are respectively connected to the movable plate 1 and the mold core 1. The two ends of the guide rod 1, which passes through the movable plate 1, are respectively connected to the support body 1 and the mold core 1. The output end of the driving component passes through the support body 1 and is connected to the movable plate 1.

[0020] The above configuration allows the drive component to lift the movable plate 1 within the groove 1, thereby driving the ejector rod 1 to rise and lift the carrier body 1, so that the support ring 1 on the carrier body 1 lifts the product, thus achieving demolding. The spring 2 can then reset the ejector rod 1.

[0021] Furthermore, the lower mold includes a second lower mold, which includes a second carrier body, a second transverse component, and two injection mold bodies two mounted on the second carrier body. The second transverse component includes a second drive device, a second mounting plate, a second mounting rod, and two or more second connecting rods. The second drive device is fixedly connected to the second mounting plate. The output end of the second drive device passes through the second mounting plate and is connected to one side of one injection mold body two. One end of the second connecting rod located on both sides of the output end of the second drive device passes through the side of one injection mold body two near the second drive device to the side of one injection mold body two away from the second drive device. The second connecting rod is slidably connected to one injection mold body two. The other end of the second connecting rod is connected to the second mounting plate. The second mounting rod passes through the side of another injection mold body two away from the first injection mold body to the side of another injection mold body two near the first injection mold body two and is fixedly connected to one end of the second connecting rod, so that the second mounting rod, the second connecting rod, and the other injection mold body two form a whole.

[0022] The above setup, after the product cools, when the two injection molds need to move away from each other, the drive device pulls one injection mold to move closer to the mounting plate. Since the drive device is fixed to the mounting plate, through the principle of action and reaction, the drive device moves relative to the first injection mold, causing the drive device to move the mounting plate closer to the support body. Simultaneously, through the connecting rod, the other injection mold moves away from the first injection mold, thus separating the two injection molds and facilitating demolding. When the two injection molds need to move away from each other... When the two injection molds move closer together, the second drive device pushes the first injection mold body to move away from the second mounting plate, causing the second drive device to move in the opposite direction relative to the first injection mold body. This causes the second drive device to move the first mounting plate on the second fixed rod away from the second support body. At the same time, the second drive device moves the second injection mold body towards the first injection mold body via the second connecting rod. This allows the first injection mold body and the second injection mold body to move closer together and combine, preventing the combined first injection mold body and the second injection mold body from moving horizontally. Thus, the two injection mold bodies can be separated and brought closer together by a single transverse component. The structure is simple and has good reliability.

[0023] Another aspect of the present invention provides an injection molding method for molding different products using the same mold with different injection volumes, comprising the following steps: S1. Drive the lower template and the upper template to move relative to each other, so that the lower mold is aligned with the upper mold, and then drive the upper mold to move downward to close the mold with the lower mold. S2 controls the injection volume of the nozzle in the upper mold according to the material cavity formed in the lower mold, so that the material cavity in the lower mold is just filled after injection, and then drives the upper mold to move upward and separate from the lower mold to open the mold. S3 drives the lower template to continue moving in the same direction, so that the lower mold one moves away from under the upper mold. At the same time, the lower mold two set on the lower template is moved to the lower mold and aligned with the upper mold. Then, the upper mold is driven to move downward to close the mold with the lower mold two. S4 controls the injection volume of the nozzle in the upper mold according to the material cavity formed in the lower mold 2, so that the material cavity in the lower mold 2 is just filled after injection. Then, the upper mold is driven to move upward and separate from the lower mold 2 to open the mold. At the same time, the two injection bodies of the lower mold 1 that have been moved away are demolded by the transverse component of the lower mold 1. After demolding, the product in the lower mold 1 is taken out. S5 drives the lower mold plate to move in the reverse direction, causing the lower mold 2 to move away from under the upper mold. The two injection mold bodies 2 of the lower mold 2 are demolded by the transverse moving component of the lower mold 2. After demolding, the product in the lower mold 2 is taken out. At the same time, the lower mold 1 is moved back to under the upper mold and closes with the upper mold. S6 repeats the cycle steps S2-S4, causing the lower mold one and lower mold two to move alternately and continuously before injection molding with the upper mold to form a combined product.

[0024] The above method involves setting two different lower molds on the lower template, with the two lower molds sharing the same upper mold. By moving the molds, the two different lower molds alternately engage with the upper mold to achieve mold closing, control different injection volumes based on different material cavities in the lower molds, and mold opening. This allows for alternating injection molding to form two products that can be matched and combined into one, thereby improving the injection molding efficiency of modular products.

[0025] Furthermore, step S4 also includes: after the lower mold 1 is removed from below the upper mold, after the product in the lower mold 1 has cooled down, the driving device 1 drives another injection mold body 1 to slide along the through groove 1 away from the first injection mold body 1, so that the two injection mold bodies 1 move and separate relative to each other. After the distance between the two injection mold bodies 1 is greater than the width of the product, the movement stops. Then, the driving component lifts the movable plate 1 in the groove 1 to drive the ejector rod 1 to rise and protrude from the separation surface to lift the carrier body 1, so that the support ring 1 sleeved on the mold core 1 lifts the product to achieve demolding. The demolded product is taken away by the robot. After demolding, the ejector rod 1 and the injection mold body 1 are reset, and the process proceeds to step S5.

[0026] The above setup, with the distance between the two injection mold bodies after they move and separate being greater than the width of the product, facilitates the release of the horizontal restriction on the cooled product. This allows the ejector pin to rise and protrude from the separation surface, lifting the support body. This causes the product, which is fitted onto the mold core by the pair of supporting rings, to exert a force in the vertical direction, thereby causing the product to detach from the mold core and achieve demolding. This makes it easier to remove the product from the lower mold. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a schematic cross-sectional view of the upper and lower molds after they are closed in this invention.

[0029] Figure 3 This is a cross-sectional schematic diagram of the lower mold 2 in this invention.

[0030] Figure 4 This is a partial exploded view of the present invention.

[0031] Figure 5 This is a partial exploded view from another perspective of the present invention.

[0032] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0033] Figure 7 for Figure 3 Enlarged view of section B in the middle.

[0034] Figure 8 This is a partial exploded view of the present invention.

[0035] Figure 9 This is a cross-sectional view of the injection-molded product of the present invention.

[0036] Figure 10 for Figure 8 Enlarged view of point C.

[0037] Figure 11 This is a schematic diagram of the structure of the transverse moving component of the present invention. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1-11 As shown, the present invention provides an injection molding machine for injection molding different products based on different injection volumes using the same upper mold. The machine includes an injection mold mounted on the injection molding machine. The injection mold includes an upper mold 1 and two lower molds that match the upper mold 1. In this embodiment, the two lower molds are lower mold one 21 and lower mold two 22. The upper mold 1 is fixedly connected to the upper template (not shown) of the injection molding machine. The upper template is connected to the output end of a drive cylinder three positioned in the vertical direction. The drive cylinder three drives the upper template to rise and fall vertically. Lower mold one 21 and lower mold two 22, positioned in a straight line, are fixedly connected to the lower template (not shown) of the injection molding machine. The lower template is mounted on the worktable (not shown) of the injection molding machine and connected to the output end of an electric telescopic cylinder (not shown) positioned on the worktable. The worktable is provided with a slide rail (not shown) that matches the lower template. The electric telescopic cylinder drives the lower template to move horizontally on the slide rail of the worktable.

[0040] like Figure 1 , Figure 2 ,and Figure 4As shown, the upper mold 1 includes a fixed plate 11, a positioning ring 12, a nozzle 13, an upper mold body 14, a positioning sleeve 15, and a fixing block 16. The fixed plate 11 is matched and connected to the upper mold plate. The fixed plate 11 has a first step portion 17 and a second step portion 18 sequentially arranged from the upper end face to the lower end face, and the diameter of the first step portion 17 is larger than the diameter of the second step portion 18. The upper end of the positioning sleeve 15 has a convex ring portion 19 that matches the second step portion 18. The lower end of the positioning sleeve 15 passes through the second step portion 18 and then passes through the fixed plate 11. The nozzle 13 that matches the positioning sleeve 15 is fitted into the fixed plate 16. Inside the sleeve 15, the protruding ring 19 abuts against the second step 18, and the lower end of the positioning ring 12 is fitted into the protruding ring 19 and abuts against the first step 17. In this way, the positioning ring 12 can limit and fix the positioning sleeve 15 and the nozzle 13 fitted into the positioning sleeve 15 in the upper mold 1. The upper end of the positioning ring 12 protrudes from the upper end face of the fixing plate 11. After the fixing plate 11 is matched and connected with the upper template, the upper end of the positioning ring 12 is matched and connected with the material barrel (not shown in the figure) set on the upper template, so that the material in the material barrel can be punched into the upper mold 1.

[0041] Please refer to the above. Figure 6 As shown, the upper mold body 14 is located below the fixed plate 11. Inside the upper mold body 14, from the lower end to the upper end, there are sequentially arranged receiving grooves 20 that match two oppositely arranged injection molding bodies 28 and receiving groove 23 that matches the fixed block 16. The diameter of receiving groove 20 is larger than the diameter of receiving groove 23. The fixed block 16 has a first countersunk hole (not shown in the figure) that matches the positioning sleeve 15. The lower end of the positioning sleeve 15, which penetrates the fixed plate 11, is embedded in the upper mold body 14 and abuts against the first countersunk hole of the fixed block 16, thus fixing the mold body. The lower end of block 16 extends downward to form a protruding ring 24. The lower end of the nozzle 13, which is fitted into the positioning sleeve 15, passes through the fixing block 16 and is flush with the protruding ring 24, and is connected to the material cavity 45. Through the combined action of the positioning ring 12 and the fixing block 16, after the positioning sleeve 15 is installed and embedded in the fixing plate 11 and the upper mold body 14, the positioning sleeve 15 can be limited in the vertical direction. Thus, after the nozzle 13 is fitted into the positioning sleeve 15, it can be flush with the protrusion at the lower end of the fixing block 16, so as to facilitate the injection of molding material into the material cavity 45.

[0042] In this embodiment, as Figure 1 and Figure 2 , Figure 4As shown, the lower mold 11 includes a carrier body 25, a mold core 26, a support body 27, a transverse component, and two injection molding bodies 28 mounted on the carrier body 25. The upper end of the carrier body 25 is provided with two or more guide pillars 29. The upper mold body 14 is provided with guide holes (not shown in the figure) that match the guide pillars 29. During the mold closing process between the upper mold 1 and the lower mold 21, the guide pillars 29 are inserted into the guide holes to provide guidance, allowing the upper mold body 14 to pass through the guide pillars 29 and... The support body 25 achieves mold closing. The support body 25 is provided with a through groove 30. The injection mold body 28 is set in the through groove 30. After the two injection mold bodies 28 move closer to each other, the upper ends form a second countersunk hole 32 that matches the convex ring 24. The two ends of the injection mold body 28 are provided with bosses (not shown in the figure). The two sides of the through groove 30 are provided with sliding grooves 31 that match the bosses, which can facilitate the sliding of the injection mold body 28 in the sliding grooves 31. The bottom side of the through groove 30 is recessed downward to form a third step 33.

[0043] like Figure 1 , Figure 4 and Figure 8 , 11As shown, the transverse moving assembly is disposed on one side of the carrier body 25. The injection mold body 28 includes two oppositely disposed injection mold bodies 281 and 282. The transverse moving assembly includes a drive device 34, a mounting plate 35, and two or more connecting rods 36, fixing rods 37, springs 38, and mounting rods 361. The drive device 34 is fixedly connected to the mounting plate 35. The output end of the drive device 34 passes through the mounting plate 35 and is fixedly connected to one side of the injection mold body 28. One end of the fixing rod 37 passes through the mounting plate 35 and is fixedly connected to one side of the carrier body 25. The other end of the fixing rod 37 is provided with a limiting ring 39 for limiting... Ring 39 limits the position of mounting plate 35, which is sleeved on fixed rod 37. Spring 38, sleeved on fixed rod 37, has its two ends connected to one side of mounting plate 35 and one side of carrier 25, respectively. One end of connecting rod 36, located on both sides of the output end of drive device 34, extends from the side of injection mold body 281 near drive device 34 to the side of injection mold body 281 away from drive device 34, allowing connecting rod 36 to slide relative to injection mold body 281. The other end of connecting rod 36 is fixedly connected to mounting plate 35. Mounting rod 361 extends from another injection mold body 282 away from injection mold body 281. The mounting rod 361 extends through to the side of another injection mold 282 near the first injection mold 281 and is connected to one end of the connecting rod 36 via a threaded connection. After connection, two stepped surfaces 362 are formed on the mounting rod 361 and the connecting rod 36, respectively. The two stepped surfaces 362 limit and lock the other injection mold 282, so that the mounting rod 361 passes through the other injection mold 282 and connects with the connecting rod 36 to form a whole. Thus, after the product cools, when the two injection molds 28 need to move away from each other, the driving device 34 pulls the first injection mold 281 towards the side closer to the mounting plate 35. Since the driving device 34 is fixed on... Mounting plate 35 is sleeved on fixing rod 37 and compressible spring 38 is slidably mounted on fixing rod 37. Through the principle of action and reaction forces, driving device 34 moves relative to injection mold body 281. Driving device 34 drives mounting plate 35 to move on fixing rod 37 towards the support body 25 and compresses spring 38. At the same time, through connecting rod 36, it drives another injection mold body 282 to move away from injection mold body 281. Thus, injection mold body 281 and injection mold body 282 move and separate relative to each other, so that the two injection mold bodies 28 can be demolded.When the two injection mold bodies 28 need to move closer together, the drive device 34 pushes one injection mold body 281 to move away from the mounting plate 35, causing the drive device 34 to move in the opposite direction relative to the injection mold body 281. Simultaneously, under the combined action of the compression spring 38, the drive device 34 drives the mounting plate 35 to move away from the support body 25 on the fixed rod 37. During this process, the spring 38 gradually extends, and simultaneously, through the connecting rod 36, driven by the mounting plate 35, it drives the other injection mold body 282 to move closer to the injection mold body 281. This allows one injection mold body 281 to move relative to another injection mold body 282 and then approach and engage. After engagement, the spring 38 returns to its original length, and simultaneously, the limiting ring 39 on the fixing rod 37 limits the mounting plate 35, thereby preventing the engaged injection mold body 281 and the other injection mold body 282 from moving horizontally. This allows a single drive device to move the two injection mold bodies closer or further apart, eliminating the need for two separate drive devices and making the entire device lightweight. In this embodiment, the drive device is a drive cylinder or a drive motor, and the mounting rod is a threaded rod.

[0044] like Figure 1 and Figure 2 As shown, the lower end face of the carrier body 25 abuts against the upper end face of the mold core body 26 to form a separation surface 40. The mold core body 26 is provided with a mold core 41 and a fourth countersunk hole 42. One end of the mold core 41 is embedded in the fourth countersunk hole 42. A support ring 43 is provided in the third step portion 33. The upper end of the support ring 43 protrudes and is provided with a through groove 30 on the bottom side. The lower ends of the two injection molding bodies 28 after relative movement and approach form a receiving cavity 44 that matches the support ring 43. The other end of the mold core 41 is sequentially... After passing through the carrier body 25 and the supporting ring 43, the core 41 is embedded in the two injection mold bodies 28. The core 41 forms a material cavity 45 with the supporting ring 43, the two injection mold bodies 28 and the ring 24. After the two injection mold bodies 28 move away from each other, the supporting body 25 can be lifted by the lifting component on the supporting body 27, which in turn drives the supporting ring 43 to move upward and exert a force on the cooled product, so that the product moves upward relative to the core 41 and separates from the core 41.

[0045] like Figure 1 and 2As shown, support body 27 is fixedly connected to the lower template. A groove 46 is formed between support body 27 and mold core body 26. A movable plate 47 and a lifting assembly 48 fixedly connected to the movable plate 47 are provided within the groove 46. The lifting assembly 46 includes two or more push rods 48, guide rods 49, a drive component 1 (not labeled in the figure), and a spring 50. One end of the push rod 48 is fixedly connected to the movable plate 47, and the other end of the push rod 48 passes through the mold core body 26 and abuts against the separation surface 40. The two ends of the spring 50, sleeved on the push rod 48, are respectively connected to the movable plate 47 and the guide rod 49. The mold core 26 is connected to the guide rod 49, which passes through the movable plate 47. Both ends of the guide rod 49 are connected to the support body 27 and the mold core 26, respectively. The output end of the drive component 1, located below the support body 27, passes through the support body 27 and connects to the movable plate 47. The drive component 1 is connected to the lower mold plate, enabling it to lift the movable plate 47 within the groove 46. This, in turn, causes the ejector rod 48 to rise and lift the carrier body 25, allowing the support ring 43 on the carrier body 25 to lift the product, thus achieving demolding. The spring 50 then drives the ejector rod 48 to return to its original position. In this embodiment, the drive component 1 is a drive cylinder.

[0046] like Figure 1 , Figure 3 and Figure 4 As shown, the lower mold 22 includes a second carrier body 51, a second mold core body 52, a second support body 53, a second transverse component, and two injection molding bodies 57 disposed on the second carrier body 51. The upper end of the second carrier body 51 is provided with two or more guide pillars 54. The upper mold body 14 is provided with guide holes (not shown in the figure) that match the guide pillars 54. During the mold closing process between the upper mold 1 and the lower mold, the guide pillars 54 are inserted into the guide holes to provide guidance, facilitating the connection between the upper mold body 14 and the lower mold. The second carrier body 51 achieves mold closing. The second carrier body 51 is provided with a through groove 55. The second injection mold body 57 is set in the through groove 55. After the two injection mold bodies 57 move closer to each other, the upper ends form a fifth countersunk hole 58 that matches the convex ring 24. The two ends of the injection mold body 57 are provided with bosses 59. The two sides of the through groove 55 are provided with sliding grooves 56 that match the bosses 59, which facilitates the sliding of the injection mold body 57 in the sliding grooves 56. The bottom side of the through groove 55 is recessed downward to form a sixth step 60.

[0047] See together Figure 5 , Figure 8 and Figure 10As shown, in this embodiment, the second transverse component is arranged opposite to the first transverse component. The second injection mold body includes two oppositely arranged injection mold bodies 571 and 572. The second transverse component is arranged on one side of the second support body 51. The second transverse component includes a second drive device 61, a second mounting plate 62, and two or more second connecting rods 63, second fixing rods 64, third springs 65, and second mounting rods 631. The second drive device 61 is fixedly connected to the second mounting plate 62. The output end of the second drive device 61 passes through the second mounting plate 62 and is fixedly connected to one side of the second injection mold body 572. One end of the second fixing rod 64 passes through the second mounting plate 62 and is fixedly connected to one side of the second support body 51. The other end is provided with a limiting ring 66, which limits the mounting plate 62 sleeved on the fixed rod 64. The spring 65 sleeved on the fixed rod 64 has its two ends connected to one side of the mounting plate 62 and one side of the carrier 51, respectively. One end of the connecting rod 63 located on both sides of the output end of the drive device 61 extends from the side of the injection mold 571 near the drive device 61 to the side of the injection mold 571 away from the drive device 61, allowing the connecting rod 63 to slide relative to the injection mold 571. The other end of the connecting rod 63 is fixedly connected to the mounting plate 62. The mounting rod 631 extends from the other injection mold 572 away from the drive device 61. One side of injection mold body 2 571 extends to the side of another injection mold body 2 572 near injection mold body 2 571, and is connected to one end of connecting rod 2 63 by a threaded connection. After connection, two stepped surfaces 2 633 are formed on mounting rod 2 631 and connecting rod 2 63 respectively. The two stepped surfaces 2 633 limit and lock the other injection mold body 2 572, so that after mounting rod 2 631 passes through the other injection mold body 2 572 and connects with connecting rod 2 63, the three are connected as one. Thus, after the product cools, when the two injection mold bodies 2 57 need to move away from each other, driving device 2 61 pulls injection mold body 2 571 to the side closer to mounting plate 2 62. It is fixed on the mounting plate 2 62, which is sleeved on the fixing rod 2 64. The compressible spring 3 65 is slidably set on the fixing rod 2 64. Through the principle of action and reaction forces, the driving device 2 61 moves relative to the first injection mold body 2 571. The driving device 2 61 drives the mounting plate 2 62 on the fixing rod 2 64 towards the support body 2 51 and compresses the spring 3 65. At the same time, through the connecting rod 2 63, it drives the other injection mold body 2 572 to move away from the first injection mold body 2 571. Thus, the first injection mold body 2 571 and the other injection mold body 2 572 move and separate relative to each other, so that the two injection mold bodies 2 57 can be demolded.When the two injection mold bodies 57 need to move closer together, the drive device 61 pushes one injection mold body 571 in the opposite direction to move away from the mounting plate 62. This causes the drive device 61 to move in the opposite direction relative to the first injection mold body 571. Simultaneously, under the combined action of the compression spring 65, the drive device 61 drives the mounting plate 62 to move away from the support body 51 on the fixed rod 64. During this process, the spring 65 gradually extends. At the same time, through the connecting rod 63, driven by the mounting plate 62, the other injection mold body 572 moves closer to the first injection mold body 571, thus making the first injection mold body 571 and the other injection mold body 572 move towards each other. After moving and approaching each other, the spring 65 returns to its original length. Simultaneously, the limiting ring 66 on the fixing rod 64 limits the mounting plate 62, preventing the joined injection mold body 571 from moving horizontally with the other injection mold body 572. This allows one driving device to move the two injection mold bodies closer or further apart, eliminating the need for two separate driving devices and making the entire device lightweight. Furthermore, the driving devices 1 and 2 are positioned opposite each other, allowing the two lower molds to be positioned close together, facilitating the movement of the upper mold between the two lower molds. In this embodiment, the driving device 2 is a driving cylinder or a driving motor, and the mounting rod 2 is a threaded rod.

[0048] like Figure 3 and Figure 7 As shown, the lower end face of the second carrier body 51 abuts against the upper end face of the second mold core body 52 to form a separation surface 67. The second mold core body 52 is provided with a second mold core 68 and a fifth countersunk hole 69. One end of the second mold core 68 is embedded in the fifth countersunk hole 69. A second support ring 70 is provided in the sixth step portion 60. The upper end of the second support ring 70 protrudes and is provided with a through groove 2 55 on the bottom side. The lower ends of the two injection molding bodies 57 after relative movement and approach form a receiving cavity 2 71 that matches the second support ring 70. The other end of the second mold core 68 is sequentially... After passing through the second carrier body 51 and the second supporting ring 70, it is embedded in the two injection mold bodies 57. The mold core 68 forms a material cavity 72 with the second supporting ring 70, the two injection mold bodies 57 and the ring 24. After the two injection mold bodies 57 move away from each other, the second carrier body 51 can be lifted by the lifting component 2 set on the second supporting body 53, which in turn drives the second supporting ring 70 to move upward and exert a force on the cooled product, so that the product moves upward relative to the mold core 68 and separates from the mold core 68.

[0049] like Figure 3 and Figure 4As shown, a groove 73 is formed between the support body 2 53 and the mold core body 2 52. A movable plate 2 74 and a lifting assembly 2 fixedly connected to the movable plate 2 74 are provided within the groove 2 73. The lifting assembly 2 includes two or more push rods 2 75, guide rods 2 76, a driving component 2 (not shown in the figure), and a spring 4 77. One end of the push rod 2 75 is fixedly connected to the movable plate 2 74, and the other end of the push rod 2 75 passes through the mold core body 2 52 and abuts against the separation surface 2 67. The two ends of the spring 4 77, which is sleeved on the push rod 2 75, are respectively connected to the movable plate 2 74. The second part 74 is connected to the second mold core body 52. ​​The two ends of the guide rod 76, which passes through the second movable plate 74, are connected to the second support body 53 and the second mold core body 52, respectively. The output end of the second drive component passes through the second support body 53 and is connected to the second movable plate 74. This allows the second drive component to lift the second movable plate 74 within the second groove 73, thereby driving the second ejector rod 75 to rise and lift the second carrier body 51. This allows the second support ring 70 on the second carrier body 51 to lift the product, thus achieving demolding. The fourth spring 77 can then drive the second ejector rod 75 to return to its original position. In this embodiment, the second drive component is a drive cylinder.

[0050] In this embodiment, as Figure 9 As shown, lower mold 22 is used to form the outer cup body 100, and lower mold 21 is used to form the inner cup body 101. The outer cup body 100 includes an outer cup body 1001 and a stepped portion 79 disposed on the outer side of the top of the outer cup body 1001. The inner cup body 101 includes an inner cup body 1010 and a boss 3 1012 disposed on the outer side of the top of the outer cup body 1010. The difference between lower mold 22 and lower mold 21 lies in the size and shape of the material cavity 2 72 formed in lower mold 22, and the product formed in material cavity 2 72 in lower mold 22 matches the product formed in material cavity 45 in lower mold 21. After assembly, they form a single unit. The lower end of the first cavity 45 has a groove 3 78, which allows the lower end of the product formed after injection molding in the first cavity 45 to form a boss 3 1012 that matches the groove 3 78. The lower end of the second cavity 72 has a fifth step 79 that matches the boss 3, so that the product formed after injection molding in the first cavity 45 can be fitted into the product formed after injection molding in the second cavity 72. Furthermore, through the principle of thermal expansion and contraction, the boss 3 and the fifth step 79 are engaged, thereby enabling the product formed after injection molding in the first cavity 45 and the product formed after injection molding in the second cavity 72 to be combined into a single unit.

[0051] An injection molding method for different products based on different injection volumes using the same mold includes the following specific steps: S1. Drive the lower template to move, so that the two lower molds set on the lower template and in a straight line move sequentially to below the upper mold 1 and align with the upper mold 1. Then drive the upper mold 1 to move downward to close with the lower mold 21. In another embodiment, the two lower molds are kept in place, and the upper template is moved relative to the two lower templates by moving the upper template to the positions of the two lower templates.

[0052] S2 controls the injection volume of the nozzle 13 in the upper mold 1 according to the material cavity 45 formed in the lower mold 21, so that the injection volume just fills the material cavity 45 in the lower mold 21. Then, the upper mold 1 is driven to move upward and separate from the lower mold 21 to realize mold opening.

[0053] S3 drives the lower template to continue moving in the same direction, so that the lower mold 1 21 is moved away from under the upper mold 1. At the same time, the lower mold 22 set on the lower template is moved to the lower mold 1 and aligned with the upper mold 1. Then, the upper mold 1 is driven to move downward to close the mold with the lower mold 22.

[0054] S4 controls the injection volume of the nozzle 13 in the upper mold 1 according to the material cavity 72 formed in the lower mold 22, so that the injection just fills the material cavity 72 in the lower mold 22. Then, the upper mold 1 is driven to move upward and separate from the lower mold 22 to open the mold. At the same time, the lower mold 21 is demolded. After demolding, the product in the lower mold 21 is taken out. In this embodiment, after the product in the lower mold 21 cools down, the driving device 34 drives another injection molding body 282 to move away from the first injection molding body along the through groove 30. Slide the two injection mold bodies 28 in the direction of 281 to move and separate them relative to each other. After the distance between the two injection mold bodies 28 is greater than the width of the product, stop moving. Then, the movable plate 47 is lifted by the drive component and rises in the groove 46 to drive the ejector rod 48 to rise and protrude from the separation surface to lift the carrier body 25. The support ring 43 sleeved on the mold core 41 lifts the product to achieve demolding. The demolded inner cup is taken away and placed by the robot. After demolding, the ejector rod 48 and the injection mold body 28 are reset. Proceed to step S5.

[0055] S5 drives the lower mold plate to move in the opposite direction, causing the lower mold 22 to move away from under the upper mold 1. After the product in the lower mold 22 cools down, the drive device 261 drives another injection mold body 2572 to slide along the through groove 25 away from the injection mold body 2571, so that the two injection mold bodies 257 move and separate relative to each other. After the distance between the two injection mold bodies 257 is greater than the width of the product, the movement stops. Then, the drive component lifts the movable plate 274 in the groove 273 to drive the ejector rod 275 to rise and protrude from the separation surface to lift the support body 251. The support ring 270 sleeved on the mold core 268 lifts the product to achieve demolding. The demolded outer cup is taken away by the robot and sleeved on the inner cup. After demolding, the ejector rod 275 and the injection mold body 257 are reset. Then, the outer cup and the inner cup are cooled completely to form an injection molded composite product.

[0056] Move the lower mold 121 back below the upper mold 1 and close it with the upper mold 1.

[0057] S6 repeats the cycle steps S2~S4, causing the lower mold 1 21 and the lower mold 22 to move alternately and continuously before injection molding with the upper mold 1 to form a combined product.

[0058] The above method involves setting two different lower molds on the lower template, with both lower molds sharing the same upper mold. By moving the two different lower molds, they alternately engage with the upper mold to achieve mold closing, control different injection volumes based on different material cavities in the lower molds, and mold opening. This allows for alternating injection molding to form two products that can be matched and combined into one unit, thereby improving the injection molding efficiency of modular products. Furthermore, injection is performed through the same upper mold, and after the inner cup body cools, the demolded outer cup body is fitted onto the inner cup body, allowing the steps of the outer cup body and the bosses of the inner cup body to fit together. After cooling again, the resulting modular product has better fit, and the two products can also be separated after cooling.

[0059] The working principle of this invention is as follows: The upper mold is fixedly connected to the upper template of the injection molding machine. When two products need to be injection molded, the lower template can be moved to align the two lower molds with the upper mold one after the other. By controlling the two different injection volumes, two products of different sizes can be formed in the two lower molds. After cooling and the upper and lower molds are opened, the horizontal movement component pulls one injection mold body in the horizontal direction, causing one injection mold body to separate from the other. Then, the lifting component lifts the support body in the vertical direction, causing the support ring sleeved on the mold core to separate from the mold core. In turn, the support ring lifts the molded product and removes it from the mold core.

Claims

1. An injection molding machine for injection molding different products based on different injection volumes using the same upper mold, comprising an injection mold mounted on the injection molding machine, the injection mold including an upper mold fixedly connected to the upper platen of the injection molding machine, characterized in that: It also includes two lower molds that match the upper mold. The lower molds are fixedly connected to the lower template of the injection molding machine. The two lower templates are movable relative to the upper template. The lower mold includes a carrier, a core body, a support body, a transverse component, and two injection molds set on the carrier. The injection molds set opposite each other and the countersunk holes set on the carrier form a receiving cavity. A support ring is provided in the receiving cavity. A transverse component is set on one side of the carrier of the lower mold. The transverse components of the two lower templates are set opposite each other. The transverse component is connected to the injection mold and drives the injection mold to move closer or further away. A core is set on the core body set below the carrier. After the core passes through the receiving cavity, it forms a material cavity with the injection mold, the support ring sleeved on the core, and the upper mold. The material filling cavities of the two lower molds are different. A lifting component is set on the support body set below the core body. After the lifting component passes through the core body, it abuts against the core body and forms a separation surface at the abutment point with the core body. The lower mold includes a lower mold 1, which includes a carrier body 1, a mold core body 1, a support body 1, a transverse moving assembly 1, and two injection mold bodies 1 set on the carrier body 1. The upper end of the carrier body 1 is provided with two or more guide pillars, and the carrier body 1 is provided with a through groove 1. The injection mold bodies 1 are set in the through groove 1. After the two injection mold bodies 1 move closer to each other, the upper ends of the two injection mold bodies 1 form a second countersunk hole that matches the convex ring. The two ends of the injection mold bodies 1 are provided with bosses 1, and the two sides of the through groove 1 are provided with sliding grooves 1 that match the bosses 1. The bottom side of the through groove 1 is recessed downward to form a third step. The lower mold includes a second lower mold, which includes a second carrier body, a second transverse component, and two injection mold bodies two mounted on the second carrier body. The second transverse component includes a second drive device, a second mounting plate, a second mounting rod, and two or more second connecting rods. The second drive device is fixedly connected to the second mounting plate. The output end of the second drive device passes through the second mounting plate and is connected to one side of one injection mold body two. One end of the second connecting rod located on both sides of the output end of the second drive device passes through the side of one injection mold body two near the second drive device to the side of one injection mold body two away from the second drive device. The second connecting rod is slidably connected to one injection mold body two. The other end of the second connecting rod is connected to the second mounting plate. The second mounting rod passes through the side of another injection mold body two away from the first injection mold body to the side of another injection mold body two near the first injection mold body two and is fixedly connected to one end of the second connecting rod, so that the second mounting rod, the second connecting rod, and the other injection mold body two form a whole.

2. The injection molding machine for molding different products using the same mold with different injection volumes according to claim 1, characterized in that: The upper mold includes a fixed plate, a positioning ring, a nozzle, an upper mold body, a positioning sleeve, and a fixing block. The fixed plate has a first step and a second step on its lower end face, with the diameter of the first step being larger than that of the second step. The upper end of the positioning sleeve has a protruding ring that matches the second step. The lower end of the positioning sleeve passes through the second step and then through the fixed plate. The nozzle that matches the positioning sleeve is fitted into the positioning sleeve. The protruding ring abuts against the second step. The lower end of the positioning ring is fitted into the protruding ring and abuts against the first step. The upper end of the positioning ring protrudes from the upper end face of the fixed plate.

3. The injection molding machine for molding different products using the same mold with different injection volumes, as described in claim 2, is characterized in that: The upper mold body is located below the fixed plate. The upper mold body has a receiving groove 1 that matches two opposite injection mold bodies and a receiving groove 2 that matches the fixed block, arranged sequentially from the lower end to the upper end. The diameter of the receiving groove 1 is larger than the diameter of the receiving groove 2. The fixed block has a first countersunk hole that matches the positioning sleeve. The lower end of the positioning sleeve, which passes through the fixed plate, is embedded in the upper mold body and abuts against the first countersunk hole of the fixed block. The lower end of the fixed block extends downward to form a convex ring. The lower end of the nozzle that is fitted into the positioning sleeve passes through the fixed block and is flush with the convex ring, and communicates with the material cavity.

4. The injection molding machine for molding different products based on different injection volumes using the same mold as described in claim 1, characterized in that: The transverse movement assembly 1 is disposed on one side of the carrier body 1. The transverse movement assembly 1 includes a drive device 1, a mounting plate 1, and two or more connecting rods 1, fixing rods 1, springs 1, and mounting rods 1. The drive device 1 is fixedly connected to the mounting plate 1. The output end of the drive device 1 passes through the mounting plate 1 and is connected to one side of the injection mold body 1. One end of the fixing rod 1 passes through the mounting plate 1 and is connected to one side of the carrier body 1. The other end of the fixing rod 1 is provided with a limiting ring 1. The limiting ring 1 limits the mounting plate 1 that is sleeved on the fixing rod 1. The two ends of the spring 1 sleeved on the fixing rod 1 are respectively connected to One end of the connecting rod 1, located on one side of the mounting plate 1 and one side of the carrier 1, extends from the side of the injection mold 1 near the drive device 1 to the side of the injection mold 1 away from the drive device 1. The connecting rod 1 is slidably connected to the injection mold 1. The other end of the connecting rod 1 is connected to the mounting plate 1. The mounting rod 1 extends from the side of another injection mold 1 away from the injection mold 1 to the side of another injection mold 1 near the injection mold 1, and is fixedly connected to one end of the connecting rod 1, so that the mounting rod 1, the connecting rod 1, and the other injection mold 1 form a whole.

5. The injection molding machine for molding different products using the same mold with different injection volumes according to claim 1, characterized in that: The lower end face of the carrier body 1 abuts against the upper end face of the mold core body 1 to form a separation surface. The mold core body 1 is provided with a mold core 1 and a fourth countersunk hole. One end of the mold core 1 is embedded and connected in the fourth countersunk hole. A support ring 1 is provided in the third step. The upper end of the support ring 1 protrudes and is provided with a through groove 1 on the bottom side. The lower ends of the two injection mold bodies 1 after relative movement and approach form a receiving cavity 1 that matches the support ring 1. The other end of the mold core 1 passes through the carrier body 1 and the support ring 1 in sequence and is embedded in the two injection mold bodies 1, forming a material cavity 1 with the support ring 1, the two injection mold bodies 1 and the ring 1 respectively.

6. The injection molding machine for molding different products based on different injection volumes using the same mold as described in claim 1, characterized in that: A groove is formed between the support body 1 and the mold core 1. A movable plate 1 and a lifting assembly 1 fixedly connected to the movable plate 1 are provided in the groove 1. The lifting assembly 1 includes two or more push rods 1, guide rods 1, driving components and springs 2. One end of the push rod 1 is fixedly connected to the movable plate 1, and the other end of the push rod 1 passes through the mold core 1 and abuts against the separation surface. The two ends of the springs 2, which are sleeved on the push rods 1, are respectively connected to the movable plate 1 and the mold core 1. The two ends of the guide rod 1, which passes through the movable plate 1, are respectively connected to the support body 1 and the mold core 1. The output end of the driving component passes through the support body 1 and is connected to the movable plate 1.

7. The injection molding method of an injection molding machine for injection molding different products based on different injection volumes using the same mold, as described in any one of claims 1-6, is characterized in that: Includes the following steps: S1. Drive the lower template and the upper template to move relative to each other, so that the lower mold is aligned with the upper mold, and then drive the upper mold to move downward to close the mold with the lower mold. S2 controls the injection volume of the nozzle in the upper mold according to the material cavity formed in the lower mold, so that the material cavity in the lower mold is just filled after injection, and then drives the upper mold to move upward and separate from the lower mold to open the mold. S3 drives the lower template to continue moving in the same direction, so that the lower mold one moves away from under the upper mold. At the same time, the lower mold two set on the lower template is moved to the lower mold and aligned with the upper mold. Then, the upper mold is driven to move downward to close the mold with the lower mold two. S4 controls the injection volume of the nozzle in the upper mold according to the material cavity formed in the lower mold 2, so that the material cavity in the lower mold 2 is just filled after injection. Then, the upper mold is driven to move upward and separate from the lower mold 2 to open the mold. At the same time, the two injection bodies of the lower mold 1 that have been moved away are demolded by the transverse component of the lower mold 1. After demolding, the product in the lower mold 1 is taken out. S5 drives the lower mold plate to move in the reverse direction, causing the lower mold 2 to move away from under the upper mold. The two injection mold bodies 2 of the lower mold 2 are demolded by the transverse moving component of the lower mold 2. After demolding, the product in the lower mold 2 is taken out. At the same time, the lower mold 1 is moved back to under the upper mold and closes with the upper mold. S6 repeats steps S2-S4, causing the lower mold 1 and lower mold 2 to move alternately and continuously before injection molding with the upper mold to form a combined product.

8. The injection molding method of the injection molding machine for injection molding different products based on different injection volumes using the same mold as described in claim 7, characterized in that: Step S4 also includes: after the lower mold 1 is removed from below the upper mold, after the product in the lower mold 1 has cooled down, the driving device 1 drives another injection mold body 1 to slide along the through groove 1 away from the first injection mold body 1, so that the two injection mold bodies 1 move and separate relative to each other. After the distance between the two injection mold bodies 1 is greater than the width of the product, the movement stops. Then, the driving component lifts the movable plate 1 in the groove 1 to drive the ejector rod 1 to rise and protrude from the separation surface to lift the carrier body 1, so that the support ring 1 sleeved on the mold core 1 lifts the product to achieve demolding. The demolded product is taken away by the robot. After demolding, the ejector rod 1 and the injection mold body 1 are reset, and the process proceeds to step S5.

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