Special-shaped pipe forming mold and injection molding machine

Abstract

The utility model relates to the technical field of injection molding molds, in particular to a special-shaped pipe forming mold and an injection molding machine, the special-shaped pipe forming mold comprises two fixing plates, the two fixing plates are arranged in parallel, and a mounting cavity is formed between the two fixing plates; the movable mold and the fixed mold are connected to the two fixing plates respectively, open cavities are formed in the movable mold and the fixed mold respectively, and after the movable mold and the fixed mold are closed, the two open cavities are matched to obtain a forming cavity; the middle plate is located between the movable mold and the fixed mold, and a mold opening gap can be formed between the middle plate and the fixed mold under the driving of the movable mold; the forming inner core is connected to the movable mold in a sliding manner, and the forming inner core extends into the forming cavity; the core-pulling air cylinder is used for driving the forming inner core to slide, and the core-pulling air cylinder is connected to the movable mold and is connected with the forming inner core; the mold has the advantages that the manufacturing cost of the forming mold is reduced, and meanwhile the inner core is pulled away so as to facilitate demolding of the sheath.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding dies, and in particular to a special-shaped tube molding die and an injection molding machine. Background Art

[0002] Hemorrhoid cream is a medicine used to treat hemorrhoids. It needs to be used with the help of a push tube injector. The hemorrhoid cream push tube injector is usually an auxiliary device used to easily and accurately apply the hemorrhoid cream to the area that needs treatment.

[0003] In the prior art, a hemorrhoid cream push tube injector comprises a push tube, an injector and a sheath. The push tube is usually a plastic or metal tube for containing the hemorrhoid cream; the injector is a part for pushing the cream, and the cream can be accurately squeezed out to the required part through the push tube by pressing, while the sheath can cover the extrusion end of the push tube to prevent the user or other people from accidentally touching the extrusion end, thereby reducing the risk of cross infection or accidental puncture, wherein the sheath is a narrow and long piece that is overall cylindrical and hollow.

[0004] Regarding the above-mentioned related technologies, the sleeve is generally made of plastic. During injection molding, a longer inner core needs to be inserted. After the product is finalized by injection molding, the inner core needs to be pulled out to facilitate product demolding. However, due to the long length of the sleeve, when designing the injection molding mold, if a sliding block is set in the movable mold to perform lateral core pulling, the size of the molding mold will be larger, making the manufacturing cost of the molding mold high. Utility Model Content

[0005] In order to reduce the manufacturing cost of the forming mold while completing the extraction of the inner core to facilitate the demoulding of the sheath, the present application provides a special-shaped tube forming mold and an injection molding machine.

[0006] The present application provides a special-shaped tube forming mold and an injection molding machine that adopts the following technical solutions:

[0007] In a first aspect, the present application provides a special-shaped tube forming die.

[0008] A special-shaped tube forming die, comprising:

[0009] Two fixing plates, the two fixing plates are arranged in parallel and form a mounting cavity in the middle;

[0010] A movable mold and a fixed mold, wherein the movable mold and the fixed mold are respectively connected to the two fixed plates, and each of the movable mold and the fixed mold has an open cavity, and after the movable mold and the fixed mold are molded together, the two open cavities cooperate to obtain a molding cavity;

[0011] An intermediate plate, the intermediate plate is located between the movable mold and the fixed mold, and the intermediate plate can form a mold opening gap with the fixed mold when driven by the movable mold;

[0012] A molding inner core, the molding inner core is slidably connected to the movable mold, and the molding inner core extends into the molding cavity;

[0013] A core-pulling cylinder is used to drive the molding inner core to slide, wherein the core-pulling cylinder is connected to the movable mold and is connected to the molding inner core.

[0014] By adopting the above technical solution, after the injection molding is completed and the cooling is completed, the mold is opened, and the injection molding machine applies force to the movable mold. The movable mold moves toward the side away from the injection nozzle under the guidance of the guide column, and the molding inner core drives the special-shaped tube to separate from the inner wall of the open chamber on the fixed mold. While the movable mold moves, it drives the middle plate to move toward the side away from the fixed mold, so that the point gate and the sleeve are separated, and then the point gate is taken out from the opening between the middle plate and the fixed mold by the manipulator, and then the pneumatic suction cup is driven by the manipulator to move from the opening between the middle plate and the movable mold toward the sleeve until the pneumatic suction cup sucks the fixed sleeve. Then the core-pulling cylinder drives the molding core to slide out of the inner cavity of the sleeve, and then the sleeve can be taken out through the cooperation of the manipulator and the pneumatic suction cup; the designed special-shaped tube molding mold can facilitate the installation of the movable mold, the fixed mold and the guide column through the fixed plate, and a three-plate mold structure can be formed by the movable mold, the fixed mold and the middle plate, thereby realizing the separation of the point gate and the product, and the molding core can cooperate with the molding cavity to form a space for the molding sleeve, and the molding core can be pulled out from the inner cavity of the special-shaped tube by the core-pulling cylinder, and there is no need to increase the template size of the movable mold, thereby reducing the manufacturing cost of the molding mold.

[0015] In a specific possible implementation scheme, there are multiple molding cavities and molding inner cores, and the movable mold has an installation chamber, a linkage bar is connected to the piston rod of the core-pulling cylinder, one end of multiple molding inner cores is connected to the linkage bar, and the linkage bar is located in the installation chamber.

[0016] By adopting the above technical solution, a plurality of molding cavities and molding inner cores are designed, which can improve the production efficiency of the sheath, and the linkage bar can cooperate with the core-pulling cylinder to realize the extraction action of multiple molding inner cores at one time.

[0017] In a specific implementation scheme, two guide bars are connected in the installation chamber, the linkage bar is located between the two guide bars, and two ends of the linkage bar are respectively slidably connected to the two guide bars.

[0018] By adopting the above technical solution, the designed guide strip can realize the control of the sliding direction of the linkage strip, and can avoid the possibility of the movable mold being worn when the linkage strip slides, thereby requiring the replacement of the entire movable mold.

[0019] In a specific possible implementation mode, a ventilation groove is provided on one side of the guide bar close to the linkage bar, and the ventilation groove connects the installation chambers located at both ends of the linkage bar.

[0020] By adopting the above technical solution, the designed ventilation groove can facilitate the gas flow in the installation chambers on both sides of the linkage strip, thereby reducing the sliding resistance of the linkage strip.

[0021] In a specific possible implementation manner, the fixed mold and the movable mold are respectively detachably connected with core blocks, and the open cavity is opened on the core blocks.

[0022] By adopting the above technical solution, the designed core block can increase the service life of the molding die by selecting materials with better performance parameters.

[0023] In a specific embodiment, the movable mold comprises:

[0024] A mounting plate, the core-pulling cylinder is connected to the mounting plate, and a clearance cavity is provided on the mounting plate, and the core block is slidably connected in the clearance cavity;

[0025] A pull-out bottom plate, the pull-out bottom plate is located on a side of the mounting plate away from the fixed mold, and the pull-out bottom plate is connected to the fixed plate and the core block;

[0026] An ejector plate, wherein a plurality of ejection springs are connected between the ejector plate and the pull-out bottom plate, and a plurality of push plate ejector posts are connected to the ejector plate, wherein the push plate ejector posts abut against the mounting plate and are used to push the mounting plate to move toward one side of the fixed mold.

[0027] By adopting the above technical solution, the designed movable mold can push the mounting plate to slide toward the side close to the fixed mold through the cooperation of the ejector plate, the ejection spring and the ejector, thereby realizing the separation of the core block and the sleeve on the movable mold, and then cooperating with the robot arm and the molding inner core to realize the removal of the sleeve.

[0028] In a specific feasible implementation scheme, a fixed sliding block is connected to the middle plate, a plurality of inclined guide pillars are connected to the fixed mold, and a movable sliding block is passed through and slidably connected to the plurality of inclined guide pillars, the movable sliding block cooperates with the fixed sliding block, and a plurality of molding end cores are connected to the movable sliding block, and the molding end cores extend into the molding cavity.

[0029] By adopting the above technical scheme, the designed fixed slide block, inclined guide column and movable slide block can realize the withdrawal and insertion action of the molding end core. The molding end core can cooperate with the molding inner core to realize the injection molding of the sheath, and can avoid the influence of the demolding slope of the molding inner core on the taper of the injection port of the conical surface of the sheath, thereby improving the product quality of the sheath.

[0030] In a second aspect, the present application provides an injection molding machine.

[0031] An injection molding machine, comprising:

[0032] Injection molding machine body;

[0033] A special-shaped tube forming mold, which is installed on the injection molding machine body;

[0034] A manipulator is connected to the injection molding machine body, and an action end of the manipulator is connected to a pneumatic suction cup, and the pneumatic suction cup can extend between the mounting plate and the middle plate and fix the sheath under the drive of the manipulator.

[0035] By adopting the above technical scheme, after the injection molding cooling is completed, the mold is opened, and the injection molding machine applies force to the pull-out bottom plate. The pull-out bottom plate moves toward the side away from the injection nozzle under the guiding action of the guide column, and the molding inner core drives the special-shaped tube to separate from the inner wall of the open chamber on the fixed mold, and drives the middle plate to move toward the side away from the fixed mold, so that the point gate and the sleeve are separated. At the same time, the ejection spring drives the push plate ejector column to move through the ejector plate, and the push plate ejector column moves while pushing the mounting plate to move toward the fixed mold. At this time, the mounting plate drives the sleeve to separate from the core block on the movable mold through the core pulling cylinder and the molding inner core, and then the point gate is taken out from the opening between the middle plate and the fixed mold by the manipulator, and then the pneumatic suction cup is driven by the manipulator to remove it from the middle plate and the mounting plate. The opening between the mounting plates moves toward the sleeve until the pneumatic suction cup absorbs the fixed sleeve, and then the core-pulling cylinder drives the molding core to slide out of the inner cavity of the sleeve, and then the sleeve can be taken out by the cooperation of the manipulator and the pneumatic suction cup; the designed injection molding machine can facilitate the installation of the movable mold, the fixed mold and the guide column through the fixed plate, and a three-plate mold structure can be formed by the movable mold, the fixed mold and the middle plate, thereby realizing the separation of the point gate and the product, and the molding core can cooperate with the molding cavity to form a space for the molding sleeve, and the molding core can be pulled out from the inner cavity of the special-shaped tube by the core-pulling cylinder, and there is no need to increase the template size of the movable mold, thereby reducing the manufacturing cost of the molding mold, and can also avoid the ejector pin from causing top marks on the outer peripheral side of the sleeve when the sleeve is ejected.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. The designed special-shaped tube forming mold can facilitate the installation of the movable mold, the fixed mold and the guide column through the fixed plate, and a three-plate mold structure can be formed by the movable mold, the fixed mold and the middle plate, thereby realizing the separation of the point gate and the product. The molding inner core can cooperate with the molding cavity to form a space for the molding sleeve, and the molding inner core can be pulled out from the inner cavity of the special-shaped tube by the core-pulling cylinder, and there is no need to increase the template size of the movable mold, thereby reducing the manufacturing cost of the forming mold.

[0038] 2. The specially designed special-shaped tube forming mold can improve the production efficiency of the sheath through multiple forming cavities and forming inner cores. The linkage bar can cooperate with the core-pulling cylinder to realize the extraction action of multiple forming inner cores at one time.

[0039] 3. The designed special-shaped tube forming mold can realize the withdrawal and insertion of the forming end core through the fixed slider, the inclined guide column and the movable slider. The forming end core can cooperate with the forming inner core to realize the injection molding of the sheath, and can avoid the influence of the demoulding slope of the forming inner core on the injection port taper of the conical surface of the sheath, thereby improving the product quality of the sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of the sheath in the embodiment of the present application.

[0041] Figure 2 It is a schematic structural diagram of the special-shaped tube forming mold in an embodiment of the present application.

[0042] Figure 3 yes Figure 1 Front view with the retaining plate and guide posts hidden.

[0043] Figure 4 yes Figure 3 Schematic diagram of part of the structure.

[0044] Figure 5 yes Figure 4 Top view of the .

[0045] Figure 6 yes Figure 3 sectional view of .

[0046] Figure 7 yes Figure 6 Enlarged view of part A in the middle.

[0047] Explanation of the reference numerals in the accompanying drawings: 01, sheath; 011, cylindrical section; 012, conical section; 1, fixed plate; 2, movable mold; 21, mounting plate; 22, pull-out bottom plate; 23, ejector plate; 24, ejection spring; 25, push plate ejector column; 26, movable slider; 27, forming end core; 3, fixed mold; 31, inclined guide column; 4, middle plate; 41, fixed slider; 5, forming inner core; 6, core-pulling cylinder; 7, linkage strip; 8, guide strip; 81, ventilation groove; 9, core block. DETAILED DESCRIPTION

[0048] The following is combined with Figure 2-7 This application is described in further detail.

[0049] The embodiments of the present application disclose a special-shaped tube forming mold and an injection molding machine.

[0050] In a first aspect, an embodiment of the present application discloses a special-shaped tube forming die.

[0051] Reference Figure 1 The sheath 01 includes a cylindrical section 011 and a conical section 012 which are integrally connected, and the cylindrical section 011 and the conical section 012 are coaxially arranged. The cylindrical section 011 and the conical section 012 are both hollow, and an injection port is opened at one end of the conical section 012 away from the cylindrical section 011, and the inner diameter of the injection port gradually decreases toward the side of the cylindrical section 011.

[0052] Reference Figure 2 A special-shaped tube forming mold includes a fixed plate 1, a movable mold 2, a fixed mold 3 and an intermediate plate 4. There are two fixed plates 1, which are arranged in parallel and form a mounting cavity in the middle. Four guide pillars are vertically welded and fixed on one fixed plate 1, and the four guide pillars are slidably connected to the other fixed plate 1; the movable mold 2 and the fixed mold 3 are respectively connected to the two fixed plates 1, and the movable mold 2 and the fixed mold 3 have open chambers respectively. After the movable mold 2 and the fixed mold 3 are molded together, the two open chambers cooperate to obtain a molding cavity for molding a sleeve 01.

[0053] Reference Figure 3 Since the injection of the sleeve 01 adopts a point gate, in order to facilitate the separation of the point gate and the sleeve 01, the special-shaped tube forming mold also includes an intermediate plate 4, which is located between the movable mold 2 and the fixed mold 3, and a linkage guide column structure is installed between the movable mold 2, the intermediate plate 4 and the fixed mold 3. The intermediate plate 4 can form a mold opening gap between the movable mold 2 and the fixed mold 3 under the drive of the movable mold 2, wherein the opening between the movable mold 2 and the intermediate plate 4 is used to take the sleeve 01, and the opening between the intermediate plate 4 and the fixed mold 3 is used to take the point gate.

[0054] Reference Figure 4 and Figure 5 Since the inner cavity depth of the cylindrical section 011 of the sleeve 01 is relatively long, if a sliding block is set in the movable mold 2 to perform lateral core pulling, the size of the molding mold will be larger, making the manufacturing cost of the molding mold high. Therefore, the special-shaped tube molding mold also includes a molding inner core 5 and a core pulling cylinder 6. The molding inner core 5 is slidably connected to the movable mold 2, and the molding inner core 5 extends into the molding cavity; the core pulling cylinder 6 is bolted to the movable mold 2, and the piston rod of the core pulling cylinder 6 is connected to the molding inner core 5, which is used to drive the molding inner core 5 to slide along the axial direction of the cylindrical section 011.

[0055] Reference Figure 4 Furthermore, in order to improve the molding efficiency of the sheath 01, the number of molding cavities and molding inner cores 5 are both multiple, the movable mold 2 has an installation chamber, and the piston rod of the core-pulling cylinder 6 is bolted with a linkage bar 7, which is located in the installation chamber, and the linkage bar 7 is detachably fixedly connected to one end of the multiple molding inner cores 5 at the same time, so that the molding inner core 5 can be quickly replaced when it is worn.

[0056] Reference Figure 4 In order to facilitate the control of the sliding direction of the linkage bar 7 and replace the friction loss between the movable mold 2 and the linkage bar 7, two guide bars 8 are bolted in the installation chamber, the linkage bar 7 is located between the two guide bars 8, and the two ends of the linkage bar 7 are respectively slidably connected to the two guide bars 8.

[0057] Reference Figure 4 In order to reduce the gas resistance when the linkage bar 7 slides, a ventilation groove 81 is opened on the side of the guide bar 8 close to the linkage bar 7, and the ventilation groove 81 connects the installation chambers on the opposite sides of the sliding direction of the linkage bar 7.

[0058] Reference Figure 6 The molding cavity has to withstand greater pressure during the injection molding process and is prone to wear. In order to reduce maintenance costs, the fixed mold 3 and the movable mold 2 are respectively detachably connected with core blocks 9, and the open cavity is opened on the core blocks 9. The core blocks 9 on the fixed mold 3 and the core blocks 9 on the movable mold 2 obtain a molding cavity after the molds are closed; in the present application, the number of core blocks 9 on the fixed mold 3 and the movable mold 2 can be one, two, or three. The specific number is determined according to the overall size of the mold and the number of single injection moldings of the sheath 01. In this embodiment, the number of core blocks 9 on the fixed mold 3 and the movable mold 2 is two.

[0059] Reference Figure 6 In order to enable the sleeve 01 to be separated from the two core blocks 9 during the mold opening process, the movable mold 2 includes a mounting plate 21, a pull-out bottom plate 22, an ejector plate 23, an ejection spring 24 and a push plate top column 25. The core pulling cylinder 6 is bolted to the mounting plate 21, and a clearance cavity for the core block 9 to pass through is opened on the mounting plate 21. The core block 9 is slidably connected in the clearance cavity. The pull-out bottom plate 22 is located on the side of the mounting plate 21 away from the fixed mold 3, and the pull-out bottom plate 22 is connected to the fixed plate 1 and the core block 9. The ejector plate 23 is slidably connected in the cavity of the pull-out bottom plate 22, and a plurality of ejection springs 24 are connected between the ejector plate 23 and the pull-out bottom plate 22. The push plate top column There are multiple push plate pillars 25, which are vertically connected to the ejector plate 23, and the push plate pillars 25 pass through the pull-out bottom plate 22 and abut against the mounting plate 21, so as to push the mounting plate 21 to move toward the fixed mold 3. When the mold is opened, the injection molding machine drives a fixed plate 1 to move, and the fixed plate 1 drives the pull-out bottom plate 22 to move, and then the ejector spring 24 is pushed out to apply force to the ejector plate 23, and the ejector plate 23 simultaneously drives multiple push plate pillars 25 to apply force to the mounting plate 21, so that the mounting plate 21 moves toward the fixed mold 3. While the mounting plate 21 moves, the sleeve 01 is driven to move through the core pulling cylinder 6 and the molding inner core 5, and finally the sleeve 01 is separated from the core block 9 on the movable mold 2.

[0060] Reference Figure 6 and Figure 7 In order to avoid the influence of the demoulding slope of the molding inner core 5 on the injection port taper of the outlet cone of the sheath 01 and improve the product quality of the sheath 01, a fixed slider 41 is bolted on the middle plate 4, and a plurality of inclined guide pillars 31 are quickly connected to the fixed mold 3. A movable slider 26 is commonly penetrated and slidably connected to the plurality of inclined guide pillars 31. The movable slider 26 is slidably matched with the inclined surface of the fixed slider 41. A plurality of molding end cores 27 are quickly connected to the movable slider 26. The molding end core 27 extends into the molding cavity and cooperates with the molding inner core 5 to realize the molding of the hollow inner cavity and the end injection port of the sheath 01.

[0061] The implementation principle of a special-shaped tube forming mold in the embodiment of the present application is as follows: after the injection molding is completed and the cooling is completed, the mold is opened, and the injection molding machine applies force to the pull-out bottom plate 22. The pull-out bottom plate 22 moves toward the side away from the injection nozzle under the guidance of the guide column, and the molding inner core 5 drives the special-shaped tube to separate from the inner wall of the open chamber on the fixed mold 3, and drives the middle plate 4 to move toward the side away from the fixed mold 3, so that the point gate and the sheath 01 are separated. At the same time, the ejection spring 24 drives the push plate top column 25 to move through the ejector plate 23, and the push plate top column 25 pushes the mounting plate while moving. 21 moves toward the side of the fixed mold 3. At this time, the mounting plate 21 drives the sleeve 01 to separate from the core block 9 on the movable mold 2 through the core-pulling cylinder 6 and the molding inner core 5. Then, the point gate is taken out from the opening between the middle plate 4 and the fixed mold 3 by the manipulator. Then, the pneumatic suction cup is driven by the manipulator to move from the opening between the middle plate 4 and the mounting plate 21 toward the sleeve 01 until the pneumatic suction cup absorbs the fixed sleeve 01. Then, the core-pulling cylinder 6 drives the molding inner core 5 to slide out of the inner cavity of the sleeve 01. Then, the sleeve 01 can be taken out through the cooperation of the manipulator and the pneumatic suction cup.

[0062] In a second aspect, an embodiment of the present application discloses an injection molding machine.

[0063] An injection molding machine comprises an injection molding machine body, a manipulator, a pneumatic suction cup and a special-shaped tube forming mold disclosed in the first aspect of the embodiment of the present application, wherein the special-shaped tube forming mold is installed on the injection molding machine body, the manipulator is bolted to the injection molding machine body, the pneumatic suction cup is bolted to the action end of the manipulator, the pneumatic suction cup is externally connected to a vacuum pump, the manipulator drives the pneumatic suction cup to extend into an opening between a mounting plate 21 and an intermediate plate 4 until the pneumatic suction cup is in contact with a sleeve 01, at which time the vacuum pump works to cause the pneumatic suction cup to absorb and fix the sleeve 01, thereby preventing a top mark from being caused on the outer peripheral side of the sleeve 01 when the ejector pin ejects the sleeve 01.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A special-shaped tube forming die, characterized in that: include: Two fixing plates (1), the two fixing plates (1) are arranged in parallel and form a mounting cavity in the middle; A movable mold (2) and a fixed mold (3), wherein the movable mold (2) and the fixed mold (3) are respectively connected to the two fixed plates (1), and each of the movable mold (2) and the fixed mold (3) has an open cavity, and after the movable mold (2) and the fixed mold (3) are molded together, the two open cavities cooperate to obtain a molding cavity; An intermediate plate (4), the intermediate plate (4) being located between the movable mold (2) and the fixed mold (3), and the intermediate plate (4) being driven by the movable mold (2) to form a mold opening gap with the fixed mold (3); A molding inner core (5), wherein the molding inner core (5) is slidably connected to the movable mold (2), and the molding inner core (5) extends into the molding cavity; A core-pulling cylinder (6) is used to drive the molding inner core (5) to slide, wherein the core-pulling cylinder (6) is connected to the movable mold (2), and the core-pulling cylinder (6) is connected to the molding inner core (5).

2. The special-shaped tube forming die according to claim 1, characterized in that: The number of molding cavities and molding inner cores (5) is multiple, and the movable mold (2) has an installation chamber, the piston rod of the core-pulling cylinder (6) is connected to a linkage bar (7), one end of the multiple molding inner cores (5) is connected to the linkage bar (7), and the linkage bar (7) is located in the installation chamber.

3. The special-shaped tube forming die according to claim 2, characterized in that: Two guide bars (8) are connected in the installation chamber, the linkage bar (7) is located between the two guide bars (8), and the two ends of the linkage bar (7) are respectively slidably connected to the two guide bars (8).

4. The special-shaped tube forming die according to claim 3, characterized in that: A ventilation groove (81) is provided on one side of the guide strip (8) close to the linkage strip (7), and the ventilation groove (81) connects the installation chambers located at both ends of the linkage strip (7).

5. The special-shaped tube forming die according to claim 1, characterized in that: The fixed mold (3) and the movable mold (2) are respectively detachably connected with a core block (9), and an open cavity is opened on the core block (9).

6. The special-shaped tube forming die according to claim 5, characterized in that: The movable mold (2) comprises: A mounting plate (21), the core-pulling cylinder (6) is connected to the mounting plate (21), and a clearance cavity is provided on the mounting plate (21), and the core block (9) is slidably connected in the clearance cavity; A pull-out bottom plate (22), the pull-out bottom plate (22) being located on a side of the mounting plate (21) away from the fixed mold (3), and the pull-out bottom plate (22) being connected to the fixed plate (1) and the core block (9); An ejector plate (23), wherein a plurality of ejection springs (24) are connected between the ejector plate (23) and the drawable bottom plate (22), and a plurality of push plate ejector columns are connected to the ejector plate (23), wherein the push plate ejector columns abut against the mounting plate (21) and are used to push the mounting plate (21) to move toward one side of the fixed mold (3).

7. The special-shaped tube forming die according to claim 2, characterized in that: The intermediate plate (4) is connected to a fixed slider (41), the fixed mold (3) is connected to a plurality of inclined guide pillars (31), and a movable slider (26) is passed through and slidably connected to the plurality of inclined guide pillars (31), the movable slider (26) cooperates with the fixed slider (41), and the movable slider (26) is connected to a plurality of molding end cores (27), and the molding end cores (27) extend into the molding cavity.

8. An injection molding machine, characterized in that: include: Injection molding machine body; The special-shaped tube forming mold according to claim 6, wherein the special-shaped tube forming mold is installed on the injection molding machine body; A manipulator is connected to the injection molding machine body, and the action end of the manipulator is connected to a pneumatic suction cup, and the pneumatic suction cup can be driven by the manipulator to extend between the mounting plate (21) and the middle plate (4) and fix the sheath (01).

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