Bag body and hook integrated forming die for drainage bag processing

Abstract

The utility model discloses a bag body hook integral forming die for drainage bag processing, which relates to the technical field of forming dies and comprises a female die, a first die unit, a second die unit and a die core unit. A first die unit is mounted on the inner side of the female die; the first mold unit comprises a first arc-shaped cavity, a limiting groove, limiting holes, a fixing plate, a first threaded rod, a first injection molding opening and a first air overflow hole, the first arc-shaped cavity is formed in the inner side of the female mold, the limiting groove is formed in the inner side of the female mold, and the limiting holes are fixedly connected to the left side and the right side of the upper end of the inner side of the female mold correspondingly. Four fixing plates are fixedly connected to the left end and the right end of the female die, first threaded rods are fixedly connected to the rear ends of the fixing plates, and a first injection molding opening is formed in the left side of the upper end of the female die. The mold can be quickly cooled to facilitate demolding.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, specifically to an integrated molding die for bag hooks used in the processing of drainage bags. Background Technology

[0002] The commonly used drainage bag is the disposable drainage bag. The drainage bag generally refers to the drainage of blood or fluid from inside the body or deep in the local surgical area after surgery. The drainage tube is connected to a transparent plastic bag that is specially used to hold the drained liquid. The material is medical polymer material and the packaging is a low-pressure PE bag.

[0003] In the existing technology, drainage bags need to be sealed after injection molding, and it is impossible to demold them while ensuring the sealing performance after injection molding. At the same time, the cooling time of the mold is long, which is not convenient for demolding. To address this, we propose an integrated mold for processing drainage bags with hooks. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an integrated mold for processing drainage bags with bag hooks, which can facilitate demolding of the device, while ensuring the sealing of the drainage bag. The mold can be cooled quickly to facilitate demolding, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated molding die for a bag hook in the processing of drainage bags, comprising a concave die, a first mold unit, a second mold unit, and a mold core unit;

[0006] Die: The first mold unit is installed on the inner side;

[0007] First mold unit: includes an arc-shaped cavity, a limiting groove, a limiting hole, a fixing plate, a threaded rod, an injection port, and an vent hole. The inner side of the cavity has an arc-shaped cavity and a limiting groove. The upper inner side of the cavity has corresponding limiting holes fixedly connected to the left and right sides. Four fixing plates are fixedly connected to the left and right ends of the cavity. The rear end of the fixing plates is fixedly connected to a threaded rod. The upper left side of the cavity has an injection port that communicates with the upper inner side of the arc-shaped cavity. The upper right side of the cavity has an vent hole that communicates with the upper inner side of the arc-shaped cavity.

[0008] Second mold unit: Installed on the first mold unit;

[0009] Mold core unit: Installed on the first mold unit and the second mold unit.

[0010] The cavity mold is fixed on the operating table of the injection molding machine, ensuring that its position is horizontal and stable. Molten plastic is injected into the arc-shaped cavity through the injection port. The vent hole is used to expel air, ensuring that there are no air bubbles during the injection process. The molten plastic cools and solidifies in the arc-shaped cavity to form the drainage bag body. At the same time, hooks are formed in the hook injection cavity.

[0011] Furthermore, the second mold unit includes a punch, a second arc-shaped cavity, a limiting post, a limiting plate, a second vent hole, a second injection port, a first hook template, and a second hook template. The second arc-shaped cavity is formed in the middle of the inner side of the punch. The limiting plate is fixedly connected to the inner side of the punch. The left and right sides of the upper inner side of the punch are fixedly connected to the limiting posts. The first hook template is fixedly connected to the lower inner side of the second arc-shaped cavity. The second hook template is slidably connected to the inner side of the first hook template. The second injection port is formed on the left side of the upper end of the punch and communicates with the upper inner side of the second arc-shaped cavity. The second vent hole is formed on the right side of the upper end of the punch and communicates with the upper inner side of the second arc-shaped cavity. The first hook template and the second hook template are slidably connected to the lower inner side of the first arc-shaped cavity. The limiting plate is slidably connected to the limiting groove, and the limiting post is slidably connected to the limiting hole. The punch is installed by fitting it with the limiting hole and limiting groove of the die through the limiting pin and limiting plate to ensure that the punch and die fit tightly. Molten plastic is injected into the arc-shaped cavity through the second injection port. The second vent hole is used to expel air to ensure that there are no air bubbles during the injection process. The inner sides of the hook template one and the hook template two form a U-shaped hook cavity.

[0012] Furthermore, the second mold unit also includes a second fixing plate and a first nut. Four second fixing plates are fixedly connected to the left and right ends of the punch. The first threaded rod passes through the second fixing plate and is threadedly connected to the first nut. By passing the first threaded rod through the second fixing plate and fixing the punch to the die with the first nut, the mold is ensured to be stable during injection molding.

[0013] Furthermore, the mold core unit includes a connecting pipe, a shape memory alloy mold core, a sealing ring, a fixing limiting plate, and a circular through hole. The shape memory alloy mold core is fixedly connected to the lower end of the connecting pipe, and a sealing ring is fixedly connected to the middle of the outer side of the connecting pipe. A fixing limiting plate is fixedly connected to the upper outer side of the sealing ring, and two circular through holes are opened at the front and rear ends of the upper side of the fixing limiting plate. The shape memory alloy mold core is installed between the cavity mold and the punch mold through the connecting pipe to ensure its accurate positioning. The sealing ring ensures the sealing between the connecting pipe and the shape memory alloy mold core and the mold, preventing leakage of molten plastic during injection molding. The fixing limiting plate and the circular through hole fix the connecting pipe and the shape memory alloy mold core to the mold, ensuring their stable position during injection molding. The shape memory alloy mold core expands into the shape of the mold core at room temperature and when heated, and shrinks at low temperature, thereby facilitating demolding of the device and ensuring the sealing of the drainage bag. At the same time, it can inject cooling water higher than the shrinkage temperature of the shape memory metal into the interior, so that the inner mold can be cooled quickly, thereby facilitating demolding.

[0014] Furthermore, the mold core unit also includes a rectangular gasket, a rectangular limiting groove, an annular gasket, a second threaded rod, and a second nut. A rectangular limiting groove is formed at the upper center of the die and punch. A second threaded rod is fixedly connected to the upper center of the rectangular limiting groove. The second threaded rod passes through a circular through-hole and one end of the rectangular gasket. An annular gasket is fitted onto the outer side of the second threaded rod. The second threaded rod is threadedly connected to the second nut. By passing the second threaded rod through the circular through-hole and the rectangular gasket, and using the second nut, the mold core unit is fixed to the mold. The rectangular limiting groove and the rectangular gasket ensure accurate positioning of the mold core unit during injection molding and prevent displacement.

[0015] Furthermore, the system also includes a first fixed extrusion plate, a sliding rod, a second fixed extrusion plate, a fixed rod, and an adjusting bolt. The outer sides of the die and punch have fixed grooves at their midpoints. Two fixed grooves are slidably connected to the midpoints of the first and second fixed extrusion plates, respectively. Sliding rods are fixedly connected to both ends of the second fixed extrusion plate, and these sliding rods are slidably connected to the second fixed extrusion plate and fixedly connected to the fixed rod. The midpoint of the fixed rod is threadedly connected to the adjusting bolt, which is rotatably connected to the midpoint of the second fixed extrusion plate. Rotating the adjusting bolt brings the first and second fixed extrusion plates closer together. The first and second fixed extrusion plates are respectively installed in the fixed grooves of the die and punch. The adjusting bolt tightly fixes the die and punch, ensuring the mold is stable and sealed during injection molding.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This integrated mold for processing drainage bags with hooks has the following advantages:

[0017] 1. The integrated mold for the bag body hook of this drainage bag is used to install the shape memory alloy mold core between the concave and convex molds through the connecting pipe to ensure accurate positioning. The sealing ring ensures the sealing between the connecting pipe and the shape memory alloy mold core and the mold, preventing leakage of molten plastic during injection molding. The connecting pipe and the shape memory alloy mold core are fixed on the mold through the fixed limiting plate and the circular through hole to ensure stable positioning during injection molding. The shape memory alloy mold core will expand into the shape of the mold core at room temperature and when heated, and will shrink at low temperature, thereby facilitating demolding of the device and ensuring the sealing of the drainage bag.

[0018] 2. The integrated mold for the bag body hook of this drainage bag processing can inject cooling water higher than the shrinkage temperature of the shape memory metal into the interior, so that the inner mold can be cooled quickly, and the mold can be cooled quickly, which facilitates demolding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0021] Figure 3 This is a schematic diagram of the left side structure of this utility model;

[0022] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0023] In the diagram: 1. Cavity, 2. Fixing groove, 3. First mold unit, 31. Arc-shaped cavity one, 32. Hook injection cavity, 32. Limiting groove, 33. Limiting hole, 34. Fixing plate, 35. Threaded rod one, 36. Injection port one, 37. Exhaust hole one, 4. Second mold unit, 41. Punch, 42. Arc-shaped cavity two, 43. Limiting post, 44. Limiting plate, 45. Fixing plate two, 46. Nut one, 47. Exhaust hole two, 48. Injection port two, 49. Hook template one, 410. Hook template two, 5. Mold core unit, 51. Connecting pipe, 52. Memory alloy mold core, 53. Sealing ring, 54. Fixing limiting plate, 55. Circular through hole, 56. Rectangular gasket, 57. Rectangular limiting groove, 58. Annular gasket, 59. Threaded rod two, 510. Nut two, 6. Fixing extrusion plate one, 7. Sliding rod, 8. Fixing extrusion plate two, 9. Fixing rod, 10. Adjusting bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This embodiment provides a technical solution: an integrated molding die for a bag hook for processing a drainage bag, comprising a concave die 1, a first mold unit 3, a second mold unit 4, and a mold core unit 5;

[0026] Die 1: The first mold unit 3 is installed on the inner side;

[0027] First mold unit 3: includes an arc-shaped cavity 31, a limiting groove 32, a limiting hole 33, a fixing plate 34, a threaded rod 35, an injection port 36, and an vent 37. The inner side of the die 1 has an arc-shaped cavity 31, a limiting groove 32, and limiting holes 33 fixedly connected to the upper inner side of the die 1 on the left and right sides respectively. Four fixing plates 34 are fixedly connected to the left and right ends of the die 1, and a threaded rod 35 is fixedly connected to the rear end of each fixing plate 34. An injection port 36 is located on the upper left side of the die 1. The cavity 1 is connected to the upper inner side of the arc-shaped cavity 31 via injection port 36. An vent 37 is provided on the upper right side of the cavity 1, and the vent 37 is connected to the upper inner side of the arc-shaped cavity 31. The cavity 1 is fixed on the operating table of the injection molding machine to ensure that its position is horizontal and stable. Molten plastic is injected into the arc-shaped cavity 31 through injection port 36. The vent 37 is used to expel air to ensure that there are no air bubbles during the injection process. The molten plastic cools and solidifies in the arc-shaped cavity 31 to form a drainage bag body. At the same time, a hook is formed in the hook injection cavity 32.

[0028] Second mold unit 4: Installed on the first mold unit 3; the second mold unit 4 includes a punch 41, an arc-shaped cavity 42, a limiting post 43, a limiting plate 44, an overflow hole 47, an injection port 48, a hook template 49, and a hook template 410. The arc-shaped cavity 42 is provided in the middle of the inner side of the punch 41. The limiting plate 44 is fixedly connected to the inner side of the punch 41. The limiting posts 43 are fixedly connected to the upper inner side of the punch 41 on the left and right sides respectively. The hook template 49 is fixedly connected to the lower inner side of the arc-shaped cavity 42. 9. Hook template 1 49 is slidably connected to hook template 2 410 inside. The upper left side of the punch 41 is provided with injection port 2 48, which is connected to the upper inner side of the arc-shaped cavity 2 42. The upper right side of the punch 41 is provided with vent hole 2 47, which is connected to the upper inner side of the arc-shaped cavity 2 42. Hook template 1 49 and hook template 2 410 are slidably connected to the lower inner side of the arc-shaped cavity 1 31. The limiting plate 44 is slidably connected to the limiting groove 32. The limiting post 43 is slidably connected to the limiting hole 33. The punch 41 is installed with the limiting hole 33 and limiting groove 32 of the die 1 through the limiting post 43 and limiting plate 44 to ensure that the punch 41 and the die 1 fit tightly. Molten plastic is injected into the arc-shaped cavity 42 through the injection port 48. The vent hole 47 is used to discharge air to ensure that there are no air bubbles in the injection process. The hook template 49 and the hook template 410 form a U-shaped hook cavity on their inner sides.

[0029] The second mold unit 4 also includes a second fixing plate 45 and a first nut 46. Four fixing plates 45 are fixedly connected to the left and right ends of the punch 41. A threaded rod 35 passes through the fixing plate 45 and is threadedly connected to the first nut 46. By passing the threaded rod 35 through the fixing plate 45 and fixing the punch 41 to the die 1 with the first nut 46, the mold is ensured to be stable during the injection molding process.

[0030] Mold core unit 5: Installed on the first mold unit 3 and the second mold unit 4, the mold core unit 5 includes a connecting pipe 51, a shape memory alloy mold core 52, a sealing ring 53, a fixed limiting plate 54 and a circular through hole 55. The lower end of the connecting pipe 51 is fixedly connected to the shape memory alloy mold core 52, the middle of the outer side of the connecting pipe 51 is fixedly connected to the sealing ring 53, the upper outer side of the sealing ring 53 is fixedly connected to the fixed limiting plate 54, and two circular through holes 55 are opened at the front and rear ends of the upper side of the fixed limiting plate 54. The shape memory alloy core 52 is installed between the concave mold 1 and the convex mold 41 through the connecting pipe 51 to ensure its accurate position. The sealing ring 53 ensures the sealing between the connecting pipe 51, the shape memory alloy core 52 and the mold, preventing leakage of molten plastic during injection molding. The connecting pipe 51 and the shape memory alloy core 52 are fixed to the mold through the fixed limiting plate 54 and the circular through hole 55 to ensure their stable position during injection molding. The shape memory alloy core 52 expands into the shape of the core at room temperature and when heated, and shrinks at low temperature, which facilitates demolding of the device and ensures the sealing of the drainage bag. At the same time, it can inject cooling water higher than the shrinkage temperature of the shape memory metal into the interior so that the inner mold can be cooled quickly, which facilitates demolding. The shape memory alloy core 52 can be made of copper-based shape memory alloy or iron-based shape memory alloy. For example, the phase transformation temperature of Fe-Mn-Si alloy can be designed in the range of 80°C to 150°C. It expands to fill the mold at high temperature and shrinks when cooled to room temperature, which facilitates demolding.

[0031] The mold core unit 5 also includes a rectangular gasket 56, a rectangular limiting groove 57, an annular gasket 58, a threaded rod 59, and a nut 510. A rectangular limiting groove 57 is provided at the upper center of the die 1 and the punch 41. A threaded rod 59 is fixedly connected to the upper center of the rectangular limiting groove 57. The threaded rod 59 passes through the circular through hole 55 and one end of the rectangular gasket 56, respectively. An annular gasket 58 is sleeved on the outside of the threaded rod 59. The threaded rod 59 is threadedly connected to the nut 510. By passing the threaded rod 59 through the circular through hole 55 and the rectangular gasket 56, and fixing the mold core unit 5 to the mold using the nut 510, the rectangular limiting groove 57 and the rectangular gasket 56 ensure accurate positioning of the mold core unit 5 during injection molding and prevent displacement.

[0032] The system also includes a fixed extrusion plate 6, a sliding rod 7, a fixed extrusion plate 8, a fixed rod 9, and an adjusting bolt 10. A fixing groove 2 is formed in the middle of the outer side of the die 1 and the punch 41. The two fixing grooves 2 are slidably connected to the middle of the fixed extrusion plate 6 and the fixed extrusion plate 8, respectively. Sliding rods 7 are fixedly connected to both ends of the fixed extrusion plate 8, and are slidably connected to the fixed extrusion plate 8. The sliding rods 7 are also fixedly connected to the fixed rod 9. The middle of the fixed rod 9 is threadedly connected to the adjusting bolt 10, which is rotatably connected to the middle of the fixed extrusion plate 8. Rotating the adjusting bolt 10 brings the fixed extrusion plate 6 and the fixed extrusion plate 8 closer together. The fixed extrusion plate 6 and the fixed extrusion plate 8 are respectively installed in the fixing grooves 2 of the die 1 and the punch 41. The adjusting bolt 10 tightly fixes the die 1 and the punch 41, ensuring the mold is stable and sealed during injection molding.

[0033] The working principle of the integrated molding die for the bag body hook of the present invention is as follows: Rotating the adjusting bolt 10 brings the first fixed extrusion plate 6 and the second fixed extrusion plate 8 closer together. The first fixed extrusion plate 6 and the second fixed extrusion plate 8 are respectively installed in the fixing grooves 2 of the concave mold 1 and the convex mold 41. The adjusting bolt 10 tightly fixes the concave mold 1 and the convex mold 41, ensuring the mold is stable and sealed during injection molding. During use, molten plastic is injected through the injection port 36 and the second injection port 48. The vent holes 37 and 47 are used to expel air, ensuring no air bubbles during injection molding. The molten plastic is deposited outside the shape memory alloy mold core 52 and in the arc-shaped cavity. The bag body of the drainage bag is formed inside the arc-shaped cavity 42 and 31. At the same time, the hook is formed inside the U-shaped hook cavity formed by the molten plastic hook template 49 and hook template 410. The hook of the drainage bag is cast integrally with the bag body. After casting, cooling water higher than the shrinkage temperature of the memory alloy mold core 52 is injected into the mold core 52 so that the inner mold can be cooled quickly. Then, the concave mold 1, convex mold 41, hook template 49 and hook template 410 are demolded. At this time, the memory alloy mold core 52 and the drainage bag are placed in a liquid lower than the shrinkage temperature of the memory metal. The memory alloy mold core 52 shrinks into the specified shape when it cools down and is then pulled out from the inside of the drainage bag.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A mold for integrally forming a bag body hook for processing drainage bags, characterized in that: It includes a concave mold (1), a first mold unit (3), a second mold unit (4), and a mold core unit (5); Die (1): The first mold unit (3) is installed on the inner side; The first mold unit (3) includes an arc-shaped cavity (31), a limiting groove (32), a limiting hole (33), a fixing plate (34), a threaded rod (35), an injection port (36), and an vent hole (37). The inner side of the cavity (1) is provided with an arc-shaped cavity (31), the inner side of the cavity (1) is provided with a limiting groove (32), and the upper inner side of the cavity (1) is fixedly connected with limiting holes (33) on the left and right sides respectively. (1) has four fixed plates (34) fixedly connected to its left and right ends. The rear end of the fixed plate (34) is fixedly connected to a threaded rod (35). An injection port (36) is opened on the upper left side of the die (1). The injection port (36) is connected to the upper inner side of the arc-shaped cavity (31). An vent hole (37) is opened on the upper right side of the die (1). The vent hole (37) is connected to the upper inner side of the arc-shaped cavity (31). Second mold unit (4): installed on the first mold unit (3); Mold core unit (5): Installed on the first mold unit (3) and the second mold unit (4).

2. The integrated molding die for the bag body hook in the processing of drainage bags according to claim 1, characterized in that: The second mold unit (4) includes a punch (41), an arc-shaped cavity two (42), a limiting post (43), a limiting plate (44), an overflow hole two (47), an injection port two (48), a hook template one (49), and a hook template two (410). The arc-shaped cavity two (42) is provided in the middle of the inner side of the punch (41). The limiting plate (44) is fixedly connected to the inner side of the punch (41). The limiting posts (43) are fixedly connected to the upper inner side of the punch (41) on the left and right sides respectively. The hook template one (49) is fixedly connected to the lower inner side of the arc-shaped cavity two (42). The inner side is slidably connected to the hook template two (410). The upper left side of the punch (41) is provided with the injection port two (48). The injection port two (48) is connected to the upper inner side of the arc-shaped cavity two (42). The upper right side of the punch (41) is provided with the vent hole two (47). The vent hole two (47) is connected to the upper inner side of the arc-shaped cavity two (42). The hook template one (49) and hook template two (410) are slidably connected to the lower inner side of the arc-shaped cavity one (31). The limiting plate (44) is slidably connected to the limiting groove (32). The limiting post (43) is slidably connected to the limiting hole (33).

3. The integrated molding die for the bag body hook in the processing of drainage bags according to claim 2, characterized in that: The second mold unit (4) also includes a second fixing plate (45) and a first nut (46). The left and right ends of the punch (41) are fixedly connected to four second fixing plates (45). The first threaded rod (35) passes through the second fixing plate (45) and is threadedly connected to the first nut (46).

4. The integrated molding die for the bag body hook in the processing of drainage bags according to claim 1, characterized in that: The core unit (5) includes a connecting pipe (51), a shape memory alloy core (52), a sealing ring (53), a fixed limiting plate (54), and a circular through hole (55). The lower end of the connecting pipe (51) is fixedly connected to the shape memory alloy core (52). The middle outer side of the connecting pipe (51) is fixedly connected to the sealing ring (53). The upper outer side of the sealing ring (53) is fixedly connected to the fixed limiting plate (54). The fixed limiting plate (54) has two circular through holes (55) at its front and rear ends on its upper side.

5. The integrated molding die for the bag body hook in the processing of drainage bags according to claim 1, characterized in that: The core unit (5) also includes a rectangular gasket (56), a rectangular limiting groove (57), an annular gasket (58), a threaded rod (59), and a nut (510). The upper middle part of the die (1) and the punch (41) is provided with a rectangular limiting groove (57). The upper middle part of the rectangular limiting groove (57) is fixedly connected to the threaded rod (59). The threaded rod (59) passes through the circular through hole (55) and one end of the rectangular gasket (56). The annular gasket (58) is sleeved on the outside of the threaded rod (59). The threaded rod (59) is threadedly connected to the nut (510).

6. The integrated molding die for the bag body hook in the processing of drainage bags according to claim 1, characterized in that: It also includes a fixed extrusion plate one (6), a sliding rod (7), a fixed extrusion plate two (8), a fixed rod (9), and an adjusting bolt (10). The outer middle of the die (1) and the punch (41) is provided with a fixed groove (2). The two fixed grooves (2) are slidably connected to the middle of the fixed extrusion plate one (6) and the fixed extrusion plate two (8), respectively. The left and right ends of the fixed extrusion plate two (8) are fixedly connected with sliding rods (7). The sliding rods (7) are slidably connected to the fixed extrusion plate two (8). The sliding rods (7) are fixedly connected to the fixed rods (9). The middle of the fixed rods (9) is threadedly connected to the adjusting bolts (10). The adjusting bolts (10) are rotatably connected to the middle of the fixed extrusion plate two (8).

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