A double-mold continuous injection molding machine

Abstract

The present invention belongs to the technical field of injection molding, and relates to a double-mold continuous injection molding machine. An injection hole for conveying raw materials penetrates through a workbench. An injection port is formed on one side of the workbench. The injection port of the workbench communicates between the two ends of the injection hole. Two one-way valve groups are installed on the injection hole of the workbench, and the two one-way valve groups are respectively located on both sides of the injection port. Two fixed molds are provided on the workbench, and the two fixed molds are respectively communicated with the two ends of the injection hole. A mold clamping unit is provided on the workbench, and two moving molds slide on the mold clamping unit. The two moving molds are respectively matched with the two fixed molds to be suitable for shaping the raw materials, and a transmission beam is connected between the two moving molds. Only one injection unit is required to alternately use the two fixed molds to continuously carry out injection production, with high work efficiency. Moreover, when the left fixed mold and the left moving mold are different from the right fixed mold and the right moving mold, different products can be respectively injection-molded.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molding, and more specifically, relates to a double-mold continuous injection molding machine. Background Art

[0002] An injection molding machine is an important device for forming plastic products. It heats thermoplastic or thermosetting plastic materials to a molten state and then injects them into a pre-designed mold cavity under high pressure. After cooling and solidifying, products of the required shape are formed. This process is called injection molding.

[0003] An injection molding machine mainly consists of an injection unit, a mold clamping unit, a control system, etc. Among them, the injection unit is responsible for melting and injecting plastic raw materials; the mold clamping unit controls the movement of the mold to ensure that the mold is closed tightly to the raw materials and provides sufficient force to keep the mold closed until the product hardens.

[0004] However, after the product is injection molded, demolding treatment is required before the injection molding machine can perform the next injection. Most of the existing injection molding machines work with a single mold. After one injection, the product needs to be removed first, and the next injection cannot be carried out immediately. During the process of the moving mold leaving the fixed mold, removing the product, and then the moving mold approaching the fixed mold again, the waiting time for injection will increase, and the continuity of injection is not high. This demolding step will affect the work efficiency. Moreover, some products need to be placed in a specific position by a robotic arm for the next process, which further affects the efficiency of the injection molding work. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a double-mold continuous injection molding machine that alternately uses two different moving molds on the same injection unit for injection production and has high work efficiency.

[0006] To solve the above technical problems, the present invention provides such a double-mold continuous injection molding machine, which includes a base. A workbench is connected to the upper side of the base. An injection hole for conveying raw materials runs through the workbench from left to right. An injection hole is opened on one side of the workbench. The injection hole of the workbench communicates between the left and right ends of the injection hole. Raw materials are injected into the injection hole of the workbench by an injection unit. The injection unit is arranged on the upper front side of the workbench. Two one-way valve groups are installed on the injection hole of the workbench. The two one-way valve groups are respectively located on the left and right sides of the injection hole. Two fixed molds facing each other left and right are provided on the workbench. The two fixed molds are respectively communicated with the left and right ends of the injection hole. A mold clamping unit is provided on the workbench. Two moving molds facing each other left and right slide on the mold clamping unit. The two fixed molds are located between the two moving molds. The two moving molds respectively cooperate with the two fixed molds to be suitable for shaping the raw materials. The movable end of the mold clamping unit is connected to one of the moving molds. Transmission beams are connected between the upper sides and the rear sides of the two moving molds.

[0007] Preferably, the one-way valve group includes a slide rod. A vertically arranged slide rod slides on the workbench. A first spring located inside the workbench is connected between the slide rod and the workbench. The first spring is used to reset the slide rod after it moves downward. The lower end of the slide rod is connected to a valve core that slides inside the workbench. The valve core has a through hole adapted to communicate with the injection hole on the workbench. Two wedges adapted to squeeze the slide rod are connected to one side of the transmission beam, and the two wedges are opposite to each other left and right.

[0008] Preferably, the mold clamping unit includes support plates. Two support plates opposite to each other left and right are connected to the upper side of the base. The two left and right support plates are respectively located on the left and right sides of the workbench. Two moving molds are located between the two support plates. Four guide rods passing through the workbench, the fixed mold and the moving molds are connected between the two support plates. The moving molds slide on the guide rods. Slide columns that slide on the support plates are connected to the mutually remote sides of the two moving molds. A cylinder is installed on the base, and the movable end of the cylinder is connected to the slide column on one of the two moving molds.

[0009] Preferably, it further includes a slide plate. Slide plates slide on both of the two slide columns. The two slide plates are located between the two support plates. The slide plates are slidably sleeved on the guide rods. A second spring surrounding the slide column is connected between the slide plate on the slide column and the moving mold on the same slide column. Push rods I are connected to the mutually approaching sides of the two slide plates. The push rods I slidably penetrate through the moving molds. The push rods I have an injection state flush with the moving molds, and the push rods I also have a discharging state extending out of the moving molds.

[0010] Preferably, it further includes limit blocks. Limit blocks are connected to both of the two moving molds. Limit hooks I are connected to both of the two support plates. The limit hooks I are adapted to abut against the side of the limit block away from the limit hook I. Limit hooks II are connected to the left and right sides of the transmission beam. The limit hooks II are adapted to abut against the side of the limit block away from the limit hook II.

[0011] Preferably, it further includes a sliding frame. Two sliding frames opposite to each other left and right slide on the workbench. A third spring located inside the work is connected between the sliding frame and the workbench. The third spring is used to reset the sliding frame during sliding. Push rods II are connected to the mutually remote sides of the two sliding frames. The push rods II on the two sliding frames respectively slidably penetrate through the two fixed molds. The push rods II have an injection state flush with the fixed molds, and the push rods II also have a discharging state extending out of the fixed molds. Contact rods are connected to the upper sides of the two sliding frames. The contact rods slidably penetrate through the workbench. A push rod I and two push rods II are connected to the transmission beam. The push rod I is located between the contact rods on the two sliding frames, and the contact rods on the two sliding frames are located between the two push rods II.

[0012] Preferably, the fixed mold has a vent hole. The push rod II has a cylindrical end and a conical part that gradually narrows in a direction away from the cylindrical end. The cylindrical end of the push rod II is in sliding fit with the vent hole of the fixed mold, and the cylindrical end prevents raw materials from seeping into the vent hole.

[0013] Preferably, a plastic injection hole is formed in the fixed mold. The fixed mold communicates with the plastic injection hole of the workbench through the plastic injection hole, and the plastic injection hole of the fixed mold gradually expands in the direction away from the workbench.

[0014] Based on overcoming the shortcomings of the prior art, the beneficial effects that the present invention can achieve are as follows:

[0015] 1. Only one plastic injection unit is required to alternately use two fixed molds to continuously carry out plastic injection production, with high work efficiency. Moreover, when the left fixed mold and the left moving mold are different from the right fixed mold and the right moving mold, different products can be respectively injection-molded.

[0016] 2. When the moving mold moves, it will drive the wedge block to squeeze the sliding rod through the transmission beam, so as to automatically and synchronously open and close the left and right one-way valve groups as needed when alternately using the two moving molds, ensuring that the raw material can flow into the correct fixed mold, with high automation and synchronization.

[0017] 3. After the plastic injection is completed, the ejector rod one and the ejector rod two are used to unload the products in the moving mold and the fixed mold, ensuring work efficiency and eliminating the need for manual unloading. Moreover, during the plastic injection process, the ejector rod one and the ejector rod two can be automatically positioned to avoid displacement affecting the plastic injection. Description of the Drawings

[0018] Figure 1 It is an assembly schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the base, workbench and cylinder of the present invention.

[0020] Figure 3 It is a top view of the workbench, fixed mold and moving mold of the present invention, where the workbench is fully sectioned.

[0021] Figure 4 For the present invention Figure 3 Enlarged view of part A.

[0022] Figure 5 It is a front view of the workbench, fixed mold and moving mold of the present invention, where the workbench and the fixed mold are fully sectioned.

[0023] Figure 6 It is a schematic diagram of the transmission beam, limit block and abutting rod of the present invention.

[0024] Figure 7 It is a schematic diagram of the sliding frame, spring three and ejector rod two of the present invention.

[0025] Figure 8 For the present invention Figure 5 Enlarged view of part B.

[0026] The reference signs in the accompanying drawings provided by the present invention are: 1 - base, 11 - injection unit, 2 - workbench, 21 - injection hole, 22 - injection molding hole, 3 - one-way valve group, 31 - slide bar, 32 - first spring, 33 - valve core, 34 - wedge block, 40 - fixed mold, 401 - plastic inlet hole, 402 - ventilation hole, 41 - support plate, 42 - guide rod, 43 - slide column, 44 - moving mold, 45 - cylinder, 46 - transmission beam, 51 - slide plate, 52 - second spring, 53 - first ejector rod, 61 - limit block, 62 - first limit hook, 63 - second limit hook, 71 - sliding frame, 72 - third spring, 73 - second ejector rod, 731 - cone part, 732 - cylindrical end, 74 - contact rod, 75 - first push rod, 76 - second push rod. Detailed implementation manners

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. It should be noted that the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] A double-mold continuous injection molding machine, as Figures 1-3As shown in the figure, it includes a base 1. The upper side of the base 1 is connected to a workbench 2. A plastic injection hole 22 for conveying raw materials runs through the workbench 2 from left to right. An injection hole 21 is opened on one side of the workbench 2. The injection hole 21 of the workbench 2 communicates between the left and right ends of the plastic injection hole 22. The plastic injection unit 11 injects raw materials into the injection hole 21 of the workbench 2. The raw materials in the injection hole 21 are adapted to flow to the left and right ends of the plastic injection hole 22 respectively. The plastic injection unit 11 is arranged on the upper side of the front part of the workbench 2. Two one-way valve groups 3 are installed on the plastic injection hole 22 of the workbench 2. The two one-way valve groups 3 are respectively located on the left and right sides of the injection hole 21. When the left one-way valve group 3 is opened and the right one-way valve group 3 is closed, the raw materials in the plastic injection hole 22 can only flow out from the left end of the plastic injection hole 22. Similarly, when the right one-way valve group 3 is opened and the left one-way valve group 3 is closed, the raw materials in the plastic injection hole 22 can only flow out from the right end of the plastic injection hole 22. Two fixed molds 40 opposite to each other left and right are arranged on the workbench 2. The two fixed molds 40 are respectively communicated with the left and right ends of the plastic injection hole 22. The raw materials flowing out from the left end of the plastic injection hole 22 will flow into the left fixed mold 40, and the raw materials flowing out from the right end of the plastic injection hole 22 will flow into the right fixed mold 40. A mold closing unit is arranged on the workbench 2. Two moving molds 44 opposite to each other left and right slide on the mold closing unit. The two fixed molds 40 are located between the two moving molds 44. The two moving molds 44 are respectively matched with the two fixed molds 40 to be adapted to shape the raw materials flowing into the fixed molds 40. The movable end of the mold closing unit is connected to one of the moving molds 44 (the left moving mold 44). Transmission beams 46 are connected between the upper sides and the rear sides of the two moving molds 44; Initially, the mold closing unit drives the left moving mold 44 to press tightly on the left fixed mold 40, and the right moving mold 44 is in a state of being separated from the right fixed mold 40. At this time, the one-way valve group 3 can be controlled to make the raw materials only flow out from the left end of the plastic injection hole 22 to the left fixed mold 40, so as to perform one injection molding. When the product needs to be taken off after the injection molding is completed, the mold closing unit is controlled to drive the left moving mold 44 to move leftward, and at the same time, the two one-way valve groups 3 are closed, so as to avoid raw material leakage when the left moving mold 44 is opened to take off the product. At the same time, the leftward movement of the left moving mold 44 will also drive the right moving mold 44 to move leftward and press tightly on the right fixed mold 40 through the transmission beam 46. At this time, the one-way valve group 3 can be controlled to make the raw materials only flow out from the right end of the plastic injection hole 22 to the right fixed mold 40, so as to automatically and synchronously perform injection molding on the right fixed mold 40 during the process of completing injection molding and taking off the product on the left fixed mold 40. Thus, only the same plastic injection unit 11 can alternately use the two fixed molds 40 to continuously carry out injection molding production with high working efficiency. And when the left fixed mold 40 and the left moving mold 44 are different from the right fixed mold 40 and the right moving mold 44, different products can also be respectively injection molded.

[0030] As Figure 5As shown, the one-way valve group 3 includes a slide bar 31, a vertically arranged slide bar 31 slides on the workbench 2, a spring 32 located in the workbench 2 is connected between the slide bar 31 and the workbench 2, and the spring 32 is used for resetting the slide bar 31 after it moves downward, and a valve core 33 is connected to the lower end of the slide bar 31 and is slidably arranged in the workbench 2, and the valve core 33 has a through hole suitable for communicating with the injection hole 22 on the workbench 2, and one side of the transmission beam 46 is connected to two wedge blocks 34 suitable for squeezing the slide bar 31, and the two wedge blocks The left and right sides of the valve core 33 are opposite to each other. Initially, the left movable mold 44 is pressed against the left fixed mold 40, and the right movable mold 44 is away from the right fixed mold 40. The left wedge block 34 squeezes the left slide bar 31, and the right wedge block 34 is away from the right slide bar 31. The through hole of the left valve core 33 is connected with the injection hole 22 on the workbench 2, and the right valve core 33 keeps the through hole on it staggered with the injection hole 22 on the workbench 2, so that the raw material flowing from the injection hole 21 into the injection hole 22 is discharged from the injection hole 22. The left end of the liquid flows out to the fixed mold 40 on the left for injection molding. When the movable mold 44 on the left moves leftward through the transmission beam 46 to drive the movable mold 44 on the right to move leftward for injection molding, the transmission beam 46 will drive the two wedges 34 to move leftward, and the left wedge 34 will loosen the left slide bar 31. The left slide bar 31 will drive the valve core 33 to move upward under the action of the spring 1 32. At this time, the through hole of the left valve core 33 is staggered with the injection hole 22 on the workbench 2, and the right wedge 34 will squeeze the right valve core 33. The slide bar 31 drives the right valve core 33 to move downward. At this time, the through hole of the right valve core 33 is connected with the injection hole 22 on the workbench 2. At this time, the raw material flowing into the injection hole 22 from the injection hole 21 can only flow out from the right end of the injection hole 22 through the through hole of the right valve core 33 to the right fixed mold 40 for injection molding production. In this way, when the two movable molds 44 are used alternately, the left and right one-way valve groups 3 are automatically and synchronously opened and closed as needed to ensure that the raw material can flow into the correct fixed mold 40, with a high degree of automation.

[0031] like Figures 1-3 As shown, the clamping unit includes a support plate 41, and two left and right opposing support plates 41 are connected to the upper side of the base 1. The left and right support plates 41 are respectively located on the left and right sides of the workbench 2, and two movable molds 44 are located between the two support plates 41. Four guide rods 42 that penetrate the workbench 2, the fixed mold 40 and the movable mold 44 are connected between the two support plates 41. The movable mold 44 is slidably arranged on the guide rods 42, and the two movable molds 44 are connected to a sliding column 43 slidably arranged on the support plate 41 on the sides away from each other. The movable mold 44 is supported and guided by the guide rods 42 and the sliding column 43. A cylinder 45 is installed on the base 1, and the movable end of the cylinder 45 is connected to the sliding column 43 on one of the two movable molds 44. The cylinder 45 is controlled to drive the sliding column 43 connected to its movable end to move, and the moving sliding column 43 will drive the movable mold 44 connected to it to move, so that the movable mold 44 is close to or away from the fixed mold 40.

[0032] As shown Figure 3 in the figure, it further includes a sliding plate 51. The sliding plate 51 slides on both of the two sliding columns 43. The two sliding plates 51 are located between the two support plates 41. The sliding plate 51 is slidably sleeved on the guide rod 42. A second spring 52 surrounding the sliding column 43 is connected between the sliding plate 51 on the sliding column 43 and the moving die 44 on the same sliding column 43. One end of the ejector rod 53 is connected to one side of each of the two sliding plates 51 close to each other. The ejector rod 53 slidably penetrates through the moving die 44. The ejector rod 53 has an injection molding state flush with the moving die 44. The ejector rod 53 in the injection molding state does not affect the injection molding of the raw material in the moving die 44. The ejector rod 53 also has a discharging state extending out of the moving die 44 (such as Figure 3 the positional relationship between the right ejector rod 53 and the right moving die 44 in the figure). The ejector rod 53 in the discharging state will eject the product in the moving die 44. When the inner surface of the fixed die 40 is subjected to an anti-sticking treatment and the injection-molded product adheres to the moving die 44, the leftward movement of the left moving die 44 will drive the left sliding plate 51 to move leftward through the left second spring 52. The left sliding plate 51 will drive the left ejector rod 53 to move leftward. At this time, the leftward movement of the left moving die 44 will also drive the product to move leftward out of the left fixed die 40. When the left sliding plate 51 abuts against the left support plate 41 to stop the leftward movement of the left ejector rod 53, the continuous leftward movement of the left moving die 44 will compress the left second spring 52, and the left ejector rod 53 will eject the product in the left moving die 44. At this time, the left ejector rod 53 is in the discharging state, so as to automatically complete the discharging of the product when the injection molding is completed and the product exits the moving die 44. At the same time, the leftward movement of the right moving die 44 will release the right second spring 52, and the right sliding plate 51 will drive the right ejector rod 53 to reset to the injection molding state flush with the right moving die 44 under the action of the right second spring 52, so that the right fixed die 40 can be normally used for injection molding production.

[0033] As shown Figure 6As shown, it further includes a limit block 61. Limit blocks 61 are connected to both of the two movable molds 44, and limit hooks 62 are connected to both of the two support plates 41. The limit hook 62 is adapted to abut against one side of the limit block 61 away from the limit hook 62. Limit hooks 63 are connected to both the left and right sides of the transmission beam 46. The limit hook 63 is adapted to abut against one side of the limit block 61 away from the limit hook 63. When the left movable mold 44 is pressed against the left fixed mold 40 for injection molding production, the left limit hook 62 abuts against the right side of the left limit block 61, and the left limit hook 63 abuts against the left side of the left limit block 61. Thus, the left slide plate 51 is fixed by the left limit block 61, so as to prevent the left ejector pin 1 from displacing during the injection molding production of the left fixed mold 40 and affecting the injection molding effect, ensuring the injection molding effect. After the injection molding is completed, when the left movable mold 44 moves leftward, it will drive the left limit hook 63 to move leftward through the left transmission beam 46 to release the left side of the left limit block 61. At this time, the left slide plate 51 can move leftward normally and abut against the left support plate 41. The principles of the right limit block 61, limit hook 62, and limit hook 63 are the same as those of the left side, and will not be elaborated here.

[0034] As Figures 5-7 shown, it further includes a sliding frame 71. Two relatively left and right sliding frames 71 slide on the workbench 2. A spring 72 is connected between the sliding frame 71 and the workbench 2 and is located inside the workbench. The spring 72 is used to reset the sliding frame 71 for sliding. Ejector pins 73 are connected to the sides of the two sliding frames 71 away from each other. The ejector pins 73 on the two sliding frames 71 respectively slide through the two fixed molds 40. The ejector pin 73 has an injection molding state flush with the fixed mold 40. The ejector pin 73 in the injection molding state does not affect the injection molding of the raw material in the fixed mold 40. The ejector pin 73 also has a discharging state extending out of the fixed mold 40 (as Figure 5(Relationship between the right second ejector rod 73 and the right fixed mold 40). In the unloading state, the second ejector rod 73 ejects the product in the fixed mold 40. A contact rod 74 is connected to the upper side of each of the two sliding frames 71. The contact rod 74 slidably penetrates through the workbench 2. A first push rod 75 and two second push rods 76 are connected to the transmission beam 46. The first push rod 75 is located between the contact rods 74 on the two sliding frames 71, and the contact rods 74 on the two sliding frames 71 are located between the two second push rods 76. Initially, when the left moving mold 44 is pressed against the left fixed mold 40 for injection molding production, the first push rod 75 presses the right contact rod 74. The right second ejector rod 73 is in the unloading state of protruding from the right fixed mold 40, and the left second ejector rod 73 is in the injection molding state flush with the fixed mold 40. The left second push rod 76 blocks the left side of the left contact rod 74, so that the left second ejector rod 73 cannot move leftward and protrude from the left fixed mold 40, thus avoiding affecting the injection molding effect. After the injection molding is completed, when the left moving mold 44 moves leftward, it will drive the first push rod 75 and the second push rods 76 to move leftward through the transmission beam 46. The left second push rod 76 will release the left side of the left contact rod 74. During the leftward movement of the first push rod 75, it will press the left contact rod 74 to move leftward, so that the left contact rod 74 drives the left second ejector rod 73 to move leftward through the left sliding frame 71 to eject the product in the left fixed mold 40, thus avoiding the product adhering to the fixed mold 40. On the basis that the first ejector rod 53 ejects the product in the moving mold 44, it is convenient to automatically remove the product after the injection molding is completed; the principles of the right sliding frame 71, the second ejector rod 73 and the second push rod 76 are the same as those of the left side and will not be elaborated here.

[0035] As Figure 5 and Figure 8 shown, the fixed mold 40 has a vent hole 402. The second ejector rod 73 has a cylindrical end 732 and a tapered portion 731 that gradually narrows in a direction away from the cylindrical end 732. The cylindrical end 732 of the second ejector rod 73 is slidably engaged with the vent hole 402 of the fixed mold 40. The cylindrical end 732 prevents raw materials from seeping into the vent hole 402. The second ejector rod 73 ejects the product in the fixed mold set through the cylindrical end 732. During the process of the tapered portion 731 and the cylindrical end 732 on the second ejector rod 73 protruding from the vent hole 402 of the fixed mold 40, when the cylindrical end 732 disengages from the vent hole 402 and ejects the product in the fixed mold 40, the air in the vent hole 402 will flow between the vent hole 402 and the tapered portion 731 into the interior of the fixed mold 40. At this time, it is more convenient for the product to disengage from the fixed mold 40, improving the working efficiency of unloading.

[0036] As Figure 3 and Figure 4As shown in the figure, a plastic injection hole 401 is formed in the fixed mold 40. The fixed mold 40 is connected to the plastic injection hole 22 of the workbench 2 through the plastic injection hole 401. The plastic injection hole 401 of the fixed mold 40 gradually expands in the direction away from the workbench 2. In this way, during the process that the raw material in the plastic injection hole 22 on the workbench 2 flows into the fixed mold 40, the gradually expanding plastic injection hole 401 on the fixed mold 40 is used to accelerate the expansion of the raw material inside the fixed mold 40, thereby improving the plastic injection efficiency.

[0037] Obviously, the embodiments described above are only a part of the embodiments of the present invention, rather than all the embodiments. They only represent the preferred implementation modes of the present invention, and are described in a relatively specific and detailed manner. However, it should not be construed as a limitation to the scope of the patent of the present invention.

[0038] It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, quantity increases or decreases, improvements and substitutions can be made. Therefore, based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

Claims

1. A double-mold continuous injection molding machine, characterized in that: The invention comprises a base (1), the base (1) being connected to a workbench (2), the workbench (2) being penetrated by an injection hole (22) for conveying raw materials, one side of the workbench (2) being provided with an injection hole (21), the injection hole (21) of the workbench (2) being connected to two ends of the injection hole (22), the raw materials being injected into the injection hole (21) of the workbench (2) by an injection unit (11), the injection unit (11) being arranged on the workbench (2), the injection hole (22) of the workbench (2) being provided with two one-way valve groups (3), the two one-way valve groups (3) being provided with two one-way valve groups (3) The one-way valve groups (3) are respectively located on both sides of the injection hole (21); two fixed molds (40) are respectively provided on the workbench (2); the two fixed molds (40) are respectively connected to the two ends of the injection hole (22); a mold clamping unit is provided on the workbench (2); two movable molds (44) are slidably mounted on the mold clamping unit; the two movable molds (44) are respectively matched with the two fixed molds (40) to be suitable for shaping the raw material; the movable end of the mold clamping unit is connected to one of the movable molds (44); and a transmission beam (46) is connected between the two movable molds (44); The clamping unit comprises a support plate (41), two opposing support plates (41) are connected to the base (1), a guide rod (42) is connected between the two support plates (41), the movable mold (44) is slidably arranged on the guide rod (42), and the two movable molds (44) are connected to a sliding column (43) slidably arranged on the support plate (41) on the sides away from each other, and a cylinder (45) is installed on the base (1), and the movable end of the cylinder (45) is connected to the sliding column (43) on one of the two movable molds (44); It also includes a slide plate (51), on which the slide plates (51) are slidably mounted on the two slide posts (43), the two slide plates (51) are located between the two support plates (41), the slide plates (51) are slidably sleeved on the guide rod (42), a second spring (52) is connected between the slide plate (51) on the slide post (43) and the movable mold (44) on the slide post (43), a first push rod (53) is connected to the side of the two slide plates (51) close to each other, the first push rod (53) is slidably penetrated through the movable mold (44), the first push rod (53) has an injection state flush with the movable mold (44), and the first push rod (53) also has a discharge state extending from the movable mold (44); The one-way valve group (3) comprises a slide rod (31), the slide rod (31) slides on the workbench (2), a spring (32) located in the workbench (2) is connected between the slide rod (31) and the workbench (2), the lower end of the slide rod (31) is connected to a valve core (33) slidably arranged in the workbench (2), the valve core (33) has a through hole suitable for communicating with the injection hole (22) on the workbench (2), and one side of the transmission beam (46) is connected to two wedge blocks (34) suitable for squeezing the slide rod (31); It also comprises a sliding frame (71), wherein two sliding frames (71) are slidably arranged on the workbench (2) and facing each other, a spring (72) is connected between the sliding frame (71) and the workbench (2), a push rod (73) is connected to one side of the two sliding frames (71) which is away from each other, the push rods (73) on the two sliding frames (71) are respectively slidably arranged to penetrate the two fixed molds (40), the push rods (73) are in an injection molding state flush with the fixed mold (40), and the push rods (73) are in an injection molding state flush with the fixed mold (40), and the push rods (73) are in an injection molding state flush with the fixed mold (40). 73) also has a unloading state extending from the fixed mold (40), the upper sides of the two sliding frames (71) are connected to a resistance rod (74), the resistance rod (74) slides through the workbench (2), and the transmission beam (46) is connected to a push rod 1 (75) and two push rods 2 (76), the push rod 1 (75) is located between the resistance rods (74) on the two sliding frames (71), and the resistance rods (74) on the two sliding frames (71) are located between the two push rods 2 (76).

2. A double-mold continuous injection molding machine according to claim 1, characterized in that: It also includes a limit block (61), the two movable molds (44) are both connected to the limit block (61), the two support plates (41) are both connected to a limit hook 1 (62), the limit hook 1 (62) is suitable for contacting the side of the limit block (61) away from the limit hook 1 (62), and the two sides of the transmission beam (46) are both connected to a limit hook 2 (63), the limit hook 2 (63) is suitable for contacting the side of the limit block (61) away from the limit hook 2 (63).

3. A double-mold continuous injection molding machine according to claim 2, characterized in that: The fixed mold (40) has a vent hole (402), the second push rod (73) has a cylindrical end (732) and a conical portion (731) that gradually shrinks in a direction away from the cylindrical end (732), and the cylindrical end (732) of the second push rod (73) is slidably matched with the vent hole (402) of the fixed mold (40).

4. A double-mold continuous injection molding machine according to claim 1, characterized in that: The fixed mold (40) is provided with a plastic inlet hole (401), and the fixed mold (40) is connected to the injection hole (22) of the workbench (2) through the plastic inlet hole (401), and the plastic inlet hole (401) of the fixed mold (40) gradually expands in a direction away from the workbench (2).

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