A dialysis shell inverted mold

Abstract

The utility model discloses an inverted mold for a dialysis shell, and belongs to the field of mold technology. The utility model comprises: an upper mold, an oblique guide rod, an outer mold core, a lower mold, an inner mold core, an axis core, a first slider, a second slider and an embedded module, wherein the first slider is connected to the axis core, and the first slider is slidably connected to the oblique guide rod; the embedded module is slidably connected to the axis core, and an inverted module is provided on the side of the axis core close to the embedded module; the second slider is connected to the embedded module, and the second slider is slidably connected to the oblique guide rod, and a demoulding gap is provided between the oblique guide rod and the first slider. Since there is a demoulding gap between the first slider and the side wall of the oblique guide rod, the second slider drives the embedded module to be separated from the product first, so that one side of the inverted structure of the product has a deformable gap, and when the axis core, the inverted module and the embedded module move together and are separated from the product, the inverted structure of the product is not easily damaged when it is separated from the inverted module due to the deformable gap, thereby better ensuring the quality of the inverted structure of the product.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an inverted mold for a dialysis shell. Background Art

[0002] Both ends of the dialysis shell are provided with a tree fork-shaped undercut structure on the inner side. The molding of the undercut structure requires the installation of an embedded module and an undercut module on the shaft core. After the dialysis shell is injection molded, the shaft core is pulled out from the side to separate the shaft core from the product range to facilitate the removal of the product. During the demolding process of the shaft core, since a large force is required to separate the shaft core from the product, when the undercut module and the embedded module on the shaft core are removed from the undercut structure of the product, the undercut structure of the product is subject to large extrusion and is easily damaged, which is not conducive to production. Utility Model Content

[0003] The utility model aims to provide a dialysis housing undercut mold to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solution adopted to solve the above technical problems is as follows: a dialysis shell inverted mold, comprising: an upper mold, equipped with an inclined guide rod and an outer mold core; a lower mold, equipped with an inner mold core and an axis core, the axis core is located between the outer mold core and the inner mold core; a first slider, slidably arranged on the lower mold along the axial direction of the axis core, the first slider is connected to the axis core, and the first slider is slidably connected to the inclined guide rod along the length direction of the inclined guide rod. When the mold is opened, the inclined guide rod can drive the first slider to slide along the axial direction of the axis core; an embedded module, slidably arranged on the lower mold along the axial direction of the axis core A module, wherein the embedded module is slidably connected to the shaft core, an undercut module is provided on the side of the shaft core close to the embedded module, an undercut cavity is formed between the embedded module and the undercut module, and an injection cavity is formed between the undercut module, the embedded module, the shaft core, the outer mold core and the inner mold core; a second slider is connected to the embedded module, and the second slider is slidably connected to the inclined guide rod along the length direction of the inclined guide rod. When the mold is opened, the inclined guide rod can drive the second slider to slide along the axis direction of the shaft core, and a demolding gap is provided between the side of the inclined guide rod away from the shaft core and the first slider.

[0005] This technical solution has at least the following beneficial effects: when the mold is opened, the upper mold member drives the outer mold core to separate from the product, and drives the inclined guide rod to move at the same time. Under the guiding action of the inclined guide rod, the first slider and the second slider are driven to slide axially, thereby driving the shaft core, the embedded module and the undercut module to slide axially and separate from the product. Since there is a demolding gap between the first slider and the side wall of the inclined guide rod, during the initial demolding stage of the movement of the inclined guide rod: the inclined guide rod moves in the demolding gap without driving the first slider to move. During this initial demolding stage, the first slider together with the shaft core and the undercut module will not move, and the second slider drives the embedded module to separate from the product first. After the embedded module separates from the product, its original position is vacated, and a product undercut structure is formed by injection molding in the undercut cavity between the embedded module and the undercut module, so that one side of the undercut structure on the product has a deformable gap. In the later demoulding stage of the movement of the inclined guide rod: the inclined guide rod contacts the first slider and drives the first slider and the second slider to move together, so that the shaft core, the undercut module and the embedded module move together and separate from the product. The undercut structure of the product has a deformable gap and is not easily damaged when separating from the undercut module, thereby better ensuring the quality of the undercut structure of the product.

[0006] As a further improvement of the above technical solution, the embedded module is equipped with a lower pressure block, and the upper mold is equipped with an upper pressure block. The upper pressure block and the lower pressure block are both provided with mutually adapted inclined surfaces on the opposite sides, and the upper pressure block contacts the first slider on the side away from the embedded module. When the upper mold drives the outer mold core and the inner mold core to close the mold, the upper pressure block contacts the lower pressure block to position the embedded module. At the same time, the upper pressure block can limit the position of the first slider to ensure the relative position between the first slider and the second slider, that is, the relative position between the shaft core, the undercut module and the embedded module, to ensure the stability of the formed injection cavity structure and the feasibility of injection molding.

[0007] As a further improvement of the above technical solution, a convex edge is provided at one end of the embedded module, a first fixing block is installed at one side of the lower pressing block, and the first fixing block and the lower pressing block clamp the convex edge. The embedded module can be fixedly installed on the lower pressing block by clamping the convex edge between the first fixing block and the lower pressing block, so that the embedded module and the lower pressing block can be fixedly connected.

[0008] As a further improvement of the above technical solution, inner grooves are provided at the tops of both sides of the first slider and the lower pressing block, and the lower mold is installed with a third fixing block, which is pressed against the inner grooves of the first slider and the lower pressing block, so that the third fixing block and the lower mold clamp the first slider and the lower pressing block. By installing and removing the third fixing block, the first slider and the lower pressing block can be easily installed and removed, and by restricting or unlocking the first slider and the lower pressing block, the shaft core and the embedded module can be easily installed and removed.

[0009] As a further improvement of the above technical solution, the first slider is pressed against the upper part of the second slider, the first slider is wider than the second slider, and the lower mold is provided with a stepped slide groove for the first slider and the second slider to slide. The stepped slide groove can facilitate the installation of the first slider and the second slider, and at the same time, the first slider can limit the upper part of the second slider, making the structure more compact and saving space.

[0010] As a further improvement of the above technical solution, the first slider is provided with a guide groove, and the second slider is provided with a guide block slidably connected to the guide groove. The first slider and the second slider are positioned and slid relative to each other through the guide block and the guide groove, thereby ensuring the stability of the second slider sliding relative to the first slider, and in the initial demoulding stage, the stability of the embedded module when it is initially removed from the product, thereby ensuring the smooth demoulding.

[0011] As a further improvement of the above technical solution, wear-resistant blocks are installed at the positions where the lower mold member contacts the first slider and the second slider. Wear-resistant blocks with good wear resistance can be selected to replace the lower mold member to rub against the first slider and the second slider respectively, thereby reducing the wear of the lower mold member. During long-term use, the sliding stability of the first slider and the second slider can be better guaranteed. At the same time, the manufacturing cost of the lower mold member can be reduced, and the economic efficiency can be improved.

[0012] As a further improvement of the above technical solution, the lower mold is provided with an installation groove for the wear-resistant block to be embedded, and the wear-resistant block protrudes from the surface of the lower mold. The positioning of the installation groove can facilitate the installation of the wear-resistant block. At the same time, the thickness of the wear-resistant block can be set to be larger. When it is worn to be flush with the top surface of the lower mold, the wear-resistant block still has a certain thickness, and no thin flakes or debris will be generated, thereby ensuring that the mold can be used normally for a long time.

[0013] As a further improvement of the above technical solution, a limiting groove is provided at the bottom of the first slider, and the lower mold is provided with a limiting block embedded in the limiting groove, and the limiting block slides in the limiting groove. The limiting block limits the stroke of the first slider through the limiting groove, ensuring that the first slider is not easy to deviate from the set stroke range, thereby ensuring that the shaft core can return to the initial injection position for the next injection molding after being released from the product.

[0014] As a further improvement of the above technical solution, the shaft core is embedded with a mounting block along the radial direction, the first slider is installed with a second fixed block, the second fixed block is provided with a second clearance groove for the mounting block to be embedded, and the second fixed block and the first slider clamp the mounting block. The mounting block is clamped between the second fixed block and the first slider to fix the axial position of the shaft core, and the mounting block is limited in the second clearance groove to limit the radial position of the shaft core, so that the shaft core can be fixedly installed on the first slider, so as to facilitate the fixed connection between the shaft core and the first slider. At the same time, after the mounting block is separated from the second clearance groove and removed from the shaft core, it is convenient to disassemble the shaft core from the second fixed block for easy assembly and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 It is a cross-sectional schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 It is a partial cross-sectional schematic diagram of an embodiment of the utility model before demoulding;

[0018] Figure 3 It is a partial cross-sectional schematic diagram of an embodiment of the utility model at the initial demoulding stage;

[0019] Figure 4 It is a partial cross-sectional schematic diagram of an embodiment of the utility model in the later demoulding stage;

[0020] Figure 5 This is a schematic diagram of the exploded structure of the lower module in the embodiment of the utility model;

[0021] Figure 6 for Figure 5 The enlarged structural diagram at A in the middle;

[0022] Figure 7 It is a schematic diagram of the exploded structure of the first slider, the second slider and the shaft core in the embodiment of the utility model.

[0023] Upper mold 10, inclined guide rod 11, outer mold core 12, shovel base 13, third fixed block 14, inner groove 15, lower mold 20, inner mold core 21, shaft core 22, first slider 30, embedded module 31, undercut module 32, second slider 40, demoulding gap 41, lower pressure block 50, upper pressure block 51, inclined surface 52, convex edge 60, first fixed block 61, first make way groove 62, connecting tube 63, stepped slide groove 70, guide groove 71, guide block 72, wear-resistant block 73, mounting groove 74, limit groove 80, limit block 81, mounting block 90, second fixed block 91, second make way groove 92. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figure 1-4 A dialysis housing inverted mold includes an upper mold 10 and a lower mold 20. Both sides of the upper mold 10 are equipped with oblique guide rods 11, and the tops of the two oblique guide rods 11 are inclined toward the side close to each other. An outer mold core 12 is installed in the middle of the bottom of the upper mold 10. The lower mold 20 is located below the upper mold 10, and an inner mold core 21 is installed in the middle of the top of the lower mold 20. The outer mold core 12 and the inner mold core 21 are arranged to cover each other. Both sides of the lower mold 20 are slidably connected with first sliders 30, and the two first sliders 30 are installed with shaft cores 22 on opposite sides. The sliding direction of the first slider 30 relative to the lower mold 20 is the same as the axial direction of the shaft core 22. The shaft core 22 is located between the outer mold core 12 and the inner mold core 21, and the two shaft cores 22 are arranged to cover each other on opposite sides. The oblique guide rod 11 passes through the first slider 30 on the corresponding side, so that the first slider 30 can slide relatively along the side wall of the oblique guide rod 11.

[0029] The second sliders 40 are also slidably mounted on both sides of the lower mold 20. The second sliders 40 are located at the bottom of the first slider 30. The sliding direction of the second slider 40 relative to the lower mold 20 is the same as the sliding direction of the first slider 30 relative to the lower mold 20. The oblique guide rod 11 passes through the second sliders 40 on the corresponding side, so that the second sliders 40 can slide relatively along the side wall of the oblique guide rod 11. The two second sliders 40 on both sides are both installed with a lower pressing block 50 on the side close to each other, and an embedded module 31 is installed on one side of the lower pressing block 50. The embedded module 31 and the lower pressing block 50 are both sleeved on the outside of the shaft core 22, and the embedded module 31 can be slidably set on the outside of the shaft core 22. An undercut module 32 is also installed on the outside of the shaft core 22, and the undercut module 32 is sleeved on the outside of the shaft core 22. An injection cavity is formed between the outer mold core 12, the inner mold core 21, the shaft core 22, the undercut module 32 and the embedded module 31. The embedded module 31 is attached to the outer side of the undercut module 32. The outer side wall of the embedded module 31 is provided with a certain taper to facilitate demoulding. Shovel bases 13 are also installed on both sides of the bottom of the upper mold 10. During mold closing and injection molding, the shovel base 13 and the first slider 30 on the corresponding side are in conflict with each other away from the shaft core 22. In other embodiments, while ensuring that the lower pressing block 50 is firmly connected to the embedded module 31, the lower pressing block 50 may not be sleeved on the outer side of the shaft core 22, but may be located on one side or both sides of the shaft core 22.

[0030] A demoulding gap 41 is provided between the side wall of the oblique guide rods 11 on both sides on the opposite side and the first sliding block 30 . The size of the demoulding gap 41 can be designed and determined according to actual conditions.

[0031] During the initial demolding, when the upper mold 10 drives the inclined guide rod 11 to move upward, the inclined guide rod 11 slides in the demolding gap 41, the first slider 30 does not move, and the second slider 40 moves outward on both sides driven by the inclined guide rod 11, and the second slider 40 drives the lower pressure block 50 and the embedded module 31 to demold outward on both sides, first the embedded module 31 is partially removed from the product, and the vacant position of the embedded module 31 makes one side of the undercut module 32 have a deformation gap generated after the embedded module is removed.

[0032] When the oblique guide rod 11 starts to push the first slider 30 to move, the first slider 30 and the second slider 40 move outward on both sides under the drive of the oblique guide rod 11, driving the embedded module 31, the shaft core 22 and the undercut module 32 to demould outward on both sides and detach from the product. At this time, the product undercut structure formed in the undercut module 32 begins to detach from the undercut module 32. Due to the deformation gap, the product undercut structure is not easily damaged during the demoulding process, thereby ensuring the quality of the product undercut structure. An ejector structure can be installed on the lower mold 20 and the inner mold core 21. When the shaft core 22 is completely out of the product, the product can be ejected by the ejector.

[0033] Upper pressing blocks 51 are installed on both sides of the bottom of the upper mold 10. The upper pressing blocks 51 are provided with inclined surfaces 52 on the sides corresponding to the lower pressing blocks 50, and the inclined surfaces 52 of the two lower pressing blocks 50 are on opposite sides. During mold closing and injection molding, the inclined surfaces 52 of the upper pressing blocks 51 and the lower pressing blocks 50 are matched and abutted against each other, thereby ensuring the stability of the embedded module 31 during injection molding and the quality of the injection molded product. An arc-shaped notch is provided at the bottom of the upper pressing block 51 for the shaft core 22 to pass through, so that the contact area between the upper pressing block 51 and the lower pressing block 50 is larger, and the mutual pressure between the upper pressing block 51 and the lower pressing block 50 is more stable. At the same time, the side of the upper pressing block 51 away from the lower pressing block 50 is in contact with the first slider 30, and the side of the upper pressing block 51 and the first slider 30 in contact with each other can also be set to an adaptive inclined surface, so as to limit the relative position between the first slider 30 and the lower pressing block 50, that is, to limit the relative position between the shaft core 22 and the embedded module 31.

[0034] Reference Figure 5-7 , both sides of the lower mold 20 are provided with step grooves 70, and the bottom width of the step grooves 70 is greater than the top width. The second slider 40 is slidably arranged at the bottom of the step groove 70, and the first slider 30 is slidably arranged on the step surface of the step groove 70. A third fixing block 14 is installed on the top of the lower mold 20 by fasteners such as bolts. The first slider 30 is provided with inner grooves 15 on both sides, and the bottom of the third fixing block 14 abuts against the top surface of the inner groove 15, restricting the top of the second slider 40 to prevent the second slider 40 from being separated from the step groove 70. At the same time, it can also facilitate the assembly of the first slider 30 and the second slider 40. The width of the first slider is larger than that of the second slider, and the side wall of the step groove 70 restricts the sliding direction of the first slider 30 and the second slider 40, making the sliding of the first slider 30 and the second slider 40 more stable and reliable.

[0035] A guide groove 71 is provided at the bottom of the first slider 30, and the guide groove 71 runs through both sides of the bottom of the first slider 30. A guide block 72 is provided at the top of the second slider 40, and the guide block 72 is integrally formed with the second slider 40, and the cross section of the guide block 72 is dovetail-shaped or T-shaped. The guide block 72 is adapted to be slidably connected with the guide groove 71, so that the first slider 30 and the second slider 40 can restrict each other from sliding, and the overall structure is more compact and stable.

[0036] In order to limit the sliding range of the first slider 30, limiting grooves 80 are provided on both sides of the bottom of the first slider 30, and the length direction of the limiting grooves 80 is parallel to the sliding direction of the first slider 30 relative to the lower mold 20. A limiting block 81 is installed on the top of the lower mold 20, and the limiting block 81 is installed at the top of the step of the side wall of the step slide 70. The limiting block 81 is embedded in the limiting groove 80, and the first slider 30 slides within a preset range through the limitation of the side wall of the limiting groove 80. In addition, a blocking block can be set at the end position of the limiting groove 80. During the sliding process, the limiting block 81 crosses the blocking block and enters the position of the end of the limiting groove 80 through its own certain elastic deformation ability, so as to stabilize the stability of the first slider 30 at the end position of the moving range.

[0037] A convex edge 60 is provided at one end of the embedded module 31, and the convex edge 60 protrudes from the outer wall of the embedded module 31. A first fixing block 61 is installed on the side of the lower pressing block 50 close to the embedded module 31, and the first fixing block 61 is sleeved outside the shaft core 22. Bolts are installed on the first fixing block 61, and the first fixing block 61 is detachably installed on one side of the lower pressing block 50 by bolts. A first clearance groove 62 is provided on the side of the first fixing block 61 close to the lower pressing block 50, and the convex edge 60 can be just embedded in the first clearance groove 62. When the first fixing block 61 is installed on the lower pressing block 50, the convex edge 60 is clamped between the first fixing block 61 and the lower pressing block 50, so that the embedded module 31 can be stably installed on one side of the lower pressing block 50.

[0038] In order to improve the connection strength between the lower pressure block 50 and the embedded module 31, corresponding circular holes can be opened on the opposite sides of the lower pressure block 50 and the embedded module 31, and the connecting tube 63 is accommodated in the circular hole. The connecting tube 63 spans the connection between the lower pressure block 50 and the embedded module 31.

[0039] A mounting block 90 is provided on the side of the shaft core 22 close to the first slider 30. A through groove is provided in the middle of the mounting block 90. ​​A protrusion is provided on the side wall of the through groove. An engaging groove for the protrusion to be embedded is provided on the outer wall of the shaft core 22, so that the protrusion of the mounting block 90 can be embedded in the engaging groove in the radial direction of the shaft core 22, and the mounting block 90 and the shaft core 22 are relatively fixedly connected in the axial direction. A second fixing block 91 is provided on the side of the first slider 30 close to the shaft core 22. The second fixing block 91 is sleeved outside the shaft core 22. A second clearance groove 92 is provided on the side of the second fixing block 91 close to the first slider 30, and the mounting block 90 can be just embedded in the second clearance groove 92. When the second fixing block 91 is installed on the first slider 30, the mounting block 90 is clamped between the second fixing block 91 and the first slider 30, so that the shaft core 22 can be stably installed on the side of the first slider 30. In other embodiments, the mounting block 90 may also be directly fixedly connected to the shaft core 22. The mounting block 90 is directly embedded in the second clearance groove 92 from one side. When the second fixing block 91 is installed on the first slider 30, the mounting block 90 is clamped between the second fixing block 91 and the first slider 30, thereby facilitating the stable installation of the shaft core 22 on one side of the first slider 30.

[0040] It should be noted that if the length of the bottom of the first sliding block 30 is not enough to open a limiting groove 80 of sufficient length, one end of the limiting groove 80 can extend to the bottom of the second fixing block 91. The guide groove 71 also extends to penetrate the bottom of the second fixing block 91. The lower pressing block 50, the first fixing block 61 and the second fixing block 91 are also provided with inner grooves 15 on both sides, so that the third fixing block 14 can limit the top of the first sliding block 30, the first fixing block 61, the lower pressing block 50 and the second fixing block 91.

[0041] The top of the lower mold 20 is provided with a plurality of mounting grooves 74, which are located at the bottom and the stepped surface of the step slot 70. Wear blocks 73 are installed in the mounting grooves 74, and the wear blocks 73 are installed with countersunk screws. The wear blocks 73 are installed on the bottom wall of the mounting grooves 74 through the countersunk screws. The mounting grooves 74 can be filled and installed with a plurality of wear blocks 73 of standard length, thereby reducing the cost. The wear blocks 73 slightly protrude from the opening of the mounting grooves 74, that is, slightly protrude from the upper surface of the lower mold 20, and the bottoms of the first slider 30, the second slider 40 and the second fixed block 91 all conflict with the tops of the corresponding wear blocks 73. When the first slider 30, the second slider 40 and the second fixed block 91 slide relative to the lower mold 20, they will rub against the wear blocks 73, thereby reducing the wear of the lower mold 20 and ensuring the long-term sliding stability of the first slider 30, the second slider 40 and the second fixed block 91. In other embodiments, the wear-resistant block 73 can be directly mounted on the top of the lower mold 20 by countersunk screws without providing the mounting groove 74 .

[0042] In order to improve the efficiency of injection molding, two injection molding cavities can be arranged side by side between the upper mold 10 and the lower mold 20, that is, two outer mold cores 12, inner mold cores 21, shaft cores 22 and other corresponding components are matched to produce two products simultaneously in one injection molding cycle.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A dialysis housing undercut mold, characterized in that: include: The upper mold is equipped with an inclined guide rod and an outer mold core; The lower mold is provided with an inner mold core and an axis core, wherein the axis core is located between the outer mold core and the inner mold core; A first slider is slidably disposed on the lower mold along the axial direction of the shaft core, the first slider is connected to the shaft core, and the first slider is slidably connected to the oblique guide rod along the length direction of the oblique guide rod; An embedded module is slidably arranged on the lower mold along the axial direction of the shaft core, the embedded module is slidably connected to the shaft core, an undercut module is arranged on the side of the shaft core close to the embedded module, an undercut cavity is formed between the embedded module and the undercut module, and an injection cavity is formed between the undercut module, the embedded module, the shaft core, the outer mold core and the inner mold core; A second slider is connected to the embedded module. The second slider is slidably connected to the inclined guide rod along the length direction of the inclined guide rod. A demoulding gap is provided between the side of the inclined guide rod away from the shaft core and the first slider.

2. According to claim 1, a dialysis housing undercut mold, characterized in that: The embedded module is equipped with a lower pressing block, and the upper mold is equipped with an upper pressing block. The upper pressing block and the lower pressing block are provided with mutually matching inclined surfaces on the opposite sides. The upper pressing block contacts the first sliding block on the side away from the embedded module.

3. According to claim 2, a dialysis housing undercut mold, characterized in that: A convex edge is arranged at one end of the embedded module, and a first fixing block is installed at one side of the lower pressing block, and the first fixing block and the lower pressing block clamp the convex edge.

4. The dialysis housing undercut mold according to claim 2, characterized in that: The tops of both sides of the first sliding block and the lower pressing block are provided with inner grooves, and the lower mold is installed with a third fixing block, which presses against the inner grooves of the first sliding block and the lower pressing block, so that the third fixing block and the lower mold clamp the first sliding block and the lower pressing block.

5. The dialysis housing undercut mold according to claim 1, characterized in that: The first slider is pressed against the upper part of the second slider, the first slider is wider than the second slider, and the lower mold is provided with a stepped sliding groove for the first slider and the second slider to slide.

6. The dialysis housing undercut mold according to claim 5, characterized in that: The first sliding block is provided with a guide groove, and the second sliding block is provided with a guide block slidably connected to the guide groove.

7. The dialysis housing undercut mold according to claim 1, characterized in that: Wear-resistant blocks are installed at the positions where the lower mold member contacts the first slider and the second slider.

8. The dialysis housing undercut mold according to claim 7, characterized in that: The lower mold is provided with an installation groove for the wear-resistant block to be embedded, and the wear-resistant block protrudes from the surface of the lower mold.

9. The dialysis housing undercut mold according to claim 1, characterized in that: A limiting groove is provided at the bottom of the first sliding block, and the lower module is provided with a limiting block embedded in the limiting groove, and the limiting block slides in the limiting groove.

10. The dialysis housing undercut mold according to claim 1, characterized in that: The shaft core is embedded with a mounting block along the radial direction, the first slider is installed with a second fixing block, the second fixing block is provided with a second paving groove for the mounting block to be embedded, and the second fixing block and the first slider clamp the mounting block.

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