Multi-cavity mold for medical oxygen inhalation atomization mask

Abstract

The utility model discloses a medical oxygen inhalation atomization mask multi-cavity die which comprises an upper die and a lower die, the upper die is provided with an upper die core, the lower die is provided with a lower die core, and the upper die core and the lower die core form a forming cavity during die assembly; the first core-pulling assembly comprises a first mounting block, a driving inclined rod, a first core-pulling sliding block and a first core rod; the first mounting block is fixed to the upper mold, the first core-pulling sliding block is horizontally and slidably connected to the lower mold, the driving inclined rod connected to the lower end of the first mounting block is inserted into an inclined groove of the first core-pulling sliding block, and the first core rod connected to one side of the first core-pulling sliding block slidably penetrates through the upper mold core; the end of the first core rod is of a hollow semi-cylindrical structure, a pin column is arranged in the middle of the first core rod, and the first core rod is matched with the upper mold core to form a complete hollow cylinder during mold closing and used for forming an oxygen inhalation tube of the oxygen inhalation atomization mask. According to the utility model, the size precision and the wall thickness uniformity of the inner cavity of the oxygen inhalation tube are ensured, the damage risk of a demolded product is reduced, and high-efficiency and high-quality batch production is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a multi-cavity mold for a medical oxygen inhalation and atomization mask. Background Art

[0002] As an important medical device, the medical oxygen inhalation and atomization mask is widely used in the oxygen inhalation treatment process of patients. This mask not only needs to be reliably and hermetically connected to the oxygen inhalation tube to ensure that oxygen can be accurately and efficiently delivered to the patient's body, but also has extremely high requirements for the dimensional accuracy of the oxygen inhalation tube. This is because the oxygen inhalation tube needs to withstand a certain positive pressure during use and must ensure no leakage. Any minor dimensional deviation or sealing problem may affect the treatment effect and even pose a potential threat to the patient's health.

[0003] In addition, the structure of the medical oxygen inhalation and atomization mask itself is relatively complex, including various fine structures such as an oxygen inhalation tube and lateral hole grooves. These complex structures are difficult to directly demold through the traditional mold parting surface during the molding process of plastic products. If a conventional mold design is used, problems such as product deformation and damage are likely to occur during the demolding process, seriously affecting the product quality and production efficiency.

[0004] Currently, in the production of medical oxygen inhalation and atomization masks, multi-cavity molds are mostly used for batch production. As a key tool for producing plastic products, the multi-cavity mold not only gives the plastic products a complete structure, but also ensures that the products have precise dimensions. However, in the face of medical oxygen inhalation and atomization masks with complex structures and high-precision requirements, the existing multi-cavity mold technology has many limitations.

[0005] On the one hand, when the traditional mold forms the oxygen inhalation tube part, it is difficult to ensure the dimensional accuracy and wall thickness uniformity of the inner cavity of the oxygen inhalation tube. Since the core rod is prone to shift during the mold closing and opening processes, the shape of the inner cavity of the oxygen inhalation tube deviates, thereby affecting its sealing performance and use reliability, and unable to meet the technical requirements that the medical oxygen inhalation tube can withstand positive pressure and has no leakage.

[0006] On the other hand, the core-pulling method of the traditional mold often generates a large pulling force on the product during the demolding process, resulting in problems such as product deformation and stress concentration. Especially for products like medical oxygen inhalation and atomization masks with extremely high requirements for dimensional accuracy and surface quality, this pulling deformation will seriously affect the use performance and appearance quality of the product, increase the defective rate of the product, and raise the production cost. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a multi-cavity mold for a medical oxygen inhalation and atomization mask in view of the problems existing in the prior art, which ensures the dimensional accuracy and wall thickness uniformity of the inner cavity of the oxygen inhalation tube, reduces the risk of product damage during the demolding process, and realizes high-efficiency and high-quality mass production.

[0008] To achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0009] A multi-cavity mold for a medical oxygen inhalation and atomization mask, comprising an upper mold and a lower mold. The upper mold is provided with an upper mold core, and the lower mold is provided with a lower mold core. When the upper mold and the lower mold are closed, the upper mold core and the lower mold core form a molding cavity; it includes a first core-pulling assembly, and the first core-pulling assembly includes a first mounting block, a driving inclined rod, a first core-pulling slider and a first core rod; the first mounting block is fixedly connected to the upper mold, and the first core-pulling slider is horizontally slidably connected to the lower mold; the lower end of the first mounting block is connected to the driving inclined rod, the first core-pulling slider is provided with an inclined groove, and the driving inclined rod is slidably inserted into the inclined groove; one side of the first core-pulling slider is connected to the first core rod, and the first core rod slidably passes through the upper mold core; the end of the first core rod is a hollow semi-cylindrical structure, and a pin column is provided in the middle; when the mold is closed, the end of the first core rod cooperates with the upper mold core to form a complete hollow cylinder for molding the oxygen inhalation tube part of the oxygen inhalation and atomization mask.

[0010] Furthermore, it includes a second core-pulling assembly, and the second core-pulling assembly includes a second mounting block, a second driving wedge block, a second core-pulling slider and a second core rod; the second mounting block is fixedly connected to the upper mold, and the second core-pulling slider is horizontally slidably connected to the lower mold; the lower end of the second mounting block is connected to the second driving wedge block, one side inclined surface of the second driving wedge block is provided with an inclined dovetail groove, and the second core-pulling slider is provided with a trapezoidal guide bar that slidably cooperates with the dovetail groove; one side of the second core-pulling slider is connected to the second core rod, and the second core rod slidably passes through the upper mold core and extends into the molding cavity.

[0011] Furthermore, the upper mold is provided with two upper mold cores, and the lower mold is provided with two lower mold cores, corresponding to forming two forming cavities; it includes a third core pulling assembly arranged between the two forming cavities, and the third core pulling assembly includes a third mounting block, a third driving wedge block, two third core pulling sliders and two third core rods; the third mounting block is fixed to the upper mold, and the lower end of the third mounting block is connected to the third driving wedge block, and the two third core pulling sliders are located on both sides of the third driving wedge block, and are both horizontally slidably connected to the lower mold; the inclined surfaces on both sides of the third driving wedge block are respectively provided with inclined dovetail grooves, and the two third core pulling sliders are respectively provided with trapezoidal guide bars that slide with the corresponding dovetail grooves; one side of the two third core pulling sliders is connected to the third core rod, and the third core rod slides through the upper mold core on the corresponding side and extends into the corresponding forming cavity.

[0012] Furthermore, the upper mold includes an upper fixed plate, a stripping plate and a fixed mold plate connected in sequence from top to bottom, and the lower mold includes a movable mold plate, a cushion block and a lower fixed plate connected in sequence from top to bottom.

[0013] Furthermore, the four corners of the upper mold are provided with penetrating guide holes, and the lower mold is provided with guide columns that are plugged into and cooperate with the guide holes; the lower end surface of the upper mold is provided with a positioning groove, and the upper end surface of the lower mold is provided with a positioning protrusion that cooperates with the positioning groove; the contact surface between the upper mold core and the lower mold core adopts an interlocking tiger's mouth positioning.

[0014] Furthermore, the side walls of the upper mold and the lower mold are opened and locked by a locking mold component, and the locking mold component includes a buckle strip, one end of which is fixed to the upper mold by screws, and the other end is provided with a long through hole, which is connected to the lower mold by bolts.

[0015] Furthermore, the upper end surface of the upper mold is provided with a pouring port, the pouring port is connected to a pouring channel passing through the upper mold core, and the pouring channel is connected to the molding cavity.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The first core-pulling component adopts a mechanical linkage design of a driving inclined rod and an inclined groove. During the mold closing process, the vertical movement is accurately converted into the horizontal insertion and extraction movement of the first core rod, ensuring that the hollow semi-cylindrical structure at the end of the first core rod cooperates with the upper mold core to form a complete hollow cylinder, precisely constituting the inner cavity structure of the oxygen inhalation tube part. At the same time, the middle pin is accurately positioned in the molding cavity, enabling the hot-melt material to cool and solidify around the hollow structure of the first core rod and the pin, and then synchronously forming the mask body and the high-precision oxygen inhalation tube. This ensures the dimensional accuracy of the inner cavity of the oxygen inhalation tube and the uniformity of the wall thickness, effectively solving the leakage risk caused by the core rod offset in traditional molds and meeting the technical requirements of the medical oxygen inhalation tube to withstand positive pressure without leakage.

[0018] The mating design of the hollow semi-cylindrical structure at the end of the first core rod and the upper mold core directly forms a complete cylindrical cavity during mold closing. During core pulling, one side of the oxygen inhalation tube still contacts the supporting surface of the upper mold core, avoiding the pulling deformation of the product caused by the traditional core-pulling action, significantly reducing the risk of demolding stress concentration, and reducing the damage to the product caused by improper demolding.

[0019] The core-pulling action is linked to the mold opening and closing process of the mold, without the need for an additional driving device. This not only simplifies the demolding process but also reduces the risk of product damage, achieving high-efficiency and high-quality mass production. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the mold in an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the structure of the lower mold in an embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the structure of the upper mold in an embodiment of the present application;

[0024] Figure 4 It is a schematic diagram of the positional structure of the first, second, and third core-pulling components and the lower mold core in an embodiment of the present application;

[0025] Figure 5 It is a schematic diagram of the structure of the first core-pulling component in an embodiment of the present application;

[0026] Figure 6 It is a schematic diagram of the structure of the second core-pulling component in an embodiment of the present application;

[0027] Figure 7 This is a schematic structural diagram of the third core-pulling component in an embodiment of the present application;

[0028] In the figure: 1. Upper mold; 2. Lower mold; 11. Upper mold core; 21. Lower mold core; 3. First core-pulling component; 31. First mounting block; 32. Driving inclined rod; 33. First core-pulling slider; 34. First core rod; 4. Second core-pulling component; 41. Second mounting block; 42. Second driving wedge block; 43. Second core-pulling slider; 44. Second core rod; 5. Third core-pulling component; 51. Third mounting block; 52. Third driving wedge block; 53. Third core-pulling slider; 54. Third core rod; 12. Upper fixing plate; 13. Stripping plate; 14. Fixed mold plate; 22. Movable mold plate; 23. Spacer block; 24. Lower fixing plate; 25. Guide hole; 6. Mold locking component; 7. Pouring gate. Detailed implementation manners

[0029] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", etc. do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Currently, in the production of medical oxygen inhalation atomization masks, multi-cavity molds are mostly used for mass production. As a key tool for producing plastic products, the multi-cavity mold not only endows the plastic products with a complete structure, but also ensures that the products have precise dimensions. However, when facing medical oxygen inhalation atomization masks with complex structures and high-precision requirements, the existing multi-cavity mold technology has many limitations.

[0034] On the one hand, when the traditional mold forms the oxygen inhalation tube part, it is difficult to ensure the dimensional accuracy and wall thickness uniformity of the inner cavity of the oxygen inhalation tube. Since the core rod is prone to shift during the mold closing and opening processes, the inner cavity shape of the oxygen inhalation tube deviates, thereby affecting its sealing performance and use reliability, and it cannot meet the technical requirements that the medical oxygen inhalation tube can withstand positive pressure and has no leakage.

[0035] On the other hand, the core pulling method of the traditional mold often generates a large pulling force on the product during the demolding process, resulting in problems such as product deformation and stress concentration. Especially for products such as medical oxygen inhalation atomization masks with extremely high requirements for dimensional accuracy and surface quality, this pulling deformation will seriously affect the use performance and appearance quality of the product, increase the defective rate of the product, and raise the production cost.

[0036] In view of the above technical problems, as Figures 1 to 7 shown, the present application provides a multi-cavity mold for a medical oxygen inhalation atomization mask, which includes an upper mold 1 and a lower mold 2. The upper mold 1 is provided with an upper mold core 11, and the lower mold 2 is provided with a lower mold core 21. When the upper mold 1 and the lower mold 2 are closed, the upper mold core 11 and the lower mold core 21 form a molding cavity; it includes a first core pulling assembly 3, and the first core pulling assembly 3 includes a first mounting block 31, a driving inclined rod 32, a first core pulling slider 33, and a first core rod 34; the first mounting block 31 is fixedly connected to the upper mold 1, and the first core pulling slider 33 is horizontally slidably connected to the lower mold 2; the lower end of the first mounting block 31 is connected to the driving inclined rod 32, and the first core pulling slider 33 is provided with an inclined groove, and the driving inclined rod 32 is slidably inserted into the inclined groove; one side of the first core pulling slider 33 is connected to the first core rod 34, and the first core rod 34 slidably penetrates through the upper mold core 11; the end of the first core rod 34 is a hollow semi-cylindrical structure, and a pin column is provided in the middle; when the mold is closed, the end of the first core rod 34 cooperates with the upper mold core 11 to form a complete hollow cylinder for forming the oxygen inhalation tube part of the oxygen inhalation atomization mask.

[0037] During the mold closing process, the first mounting block 31 fixed to the upper mold 1 moves downward synchronously with the upper mold 1. The driving inclined rod 32 connected to its lower end slides along the inclined groove of the first core-pulling slider 33, converting the vertical movement into a lateral thrust in the horizontal direction, and pushing the first core-pulling slider 33 and the connected first core rod 34 to horizontally insert into the upper mold core 11. At this time, the hollow semi-cylindrical structure at the end of the first core rod 34 cooperates with the upper mold core 11 to form a complete hollow cylinder, and the middle pin column is accurately positioned in the molding cavity, jointly constituting the inner cavity structure of the oxygen inhalation tube part. After the hot-melt material is injected into the molding cavity through the gate, it cools and solidifies around the hollow structure and the pin column of the first core rod 34, simultaneously forming the mask body and the high-precision oxygen inhalation tube.

[0038] When the mold is opened, the driving inclined rod 32 moves upward with the upper mold 1, and reversely drives the first core-pulling slider 33 and the first core rod 34 to horizontally withdraw through the inclined groove, so that the oxygen inhalation tube part is detached from the first core rod 34 without damage.

[0039] In this embodiment, through the mechanical linkage design of the driving inclined rod 32 and the inclined groove of the first core-pulling assembly 3, the vertical movement of mold closing / opening is accurately converted into the horizontal insertion and extraction actions of the first core rod 34, ensuring the inner cavity dimension accuracy and wall thickness uniformity of the oxygen inhalation tube, effectively solving the leakage risk caused by the core rod offset in the traditional mold, and meeting the technical requirements that the medical oxygen inhalation tube can withstand positive pressure and has no leakage.

[0040] The matching design of the hollow semi-cylindrical structure at the end of the first core rod 34 and the upper mold core 11 directly forms a complete cylindrical cavity during mold closing. This design makes one side of the oxygen inhalation tube still in contact with the support surface of the upper mold core 11 during core pulling, avoiding the pulling deformation of the product caused by the traditional core-pulling action and significantly reducing the risk of demolding stress concentration.

[0041] The core-pulling action is linked with the mold closing and opening process of the mold, without an additional driving device, simplifying the demolding process and reducing the risk of product damage, realizing high-efficiency and high-quality mass production.

[0042] In some embodiments, the mold includes a second core-pulling assembly 4. The second core-pulling assembly 4 includes a second mounting block 41, a second driving wedge block 42, a second core-pulling slider 43 and a second core rod 44; the second mounting block 41 is fixedly connected to the upper mold 1, and the second core-pulling slider 43 is horizontally slidably connected to the lower mold 2; the lower end of the second mounting block 41 is connected to the second driving wedge block 42, and one side inclined surface of the second driving wedge block 42 is provided with an inclined dovetail groove, and the second core-pulling slider 43 is provided with a trapezoidal guide bar that slidably cooperates with the dovetail groove; one side of the second core-pulling slider 43 is connected to the second core rod 44, and the second core rod 44 slidably passes through the upper mold core 11 and extends into the molding cavity.

[0043] During mold clamping, the second mounting block 41 fixed to the upper mold 1 moves downward synchronously with the upper mold 1. The dovetail groove of the second driving wedge block 42 connected to its lower end is in sliding fit with the trapezoidal guide bar of the second core-pulling slider 43, converting the vertical movement into a lateral thrust in the horizontal direction, and pushing the second core-pulling slider 43 and the connected second core rod 44 to horizontally insert into the upper mold core 11 and extend into the molding cavity. At this time, the end of the second core rod 44 constitutes a complete cavity for the lateral hole groove of the mask, realizing the precise molding of the lateral hole groove of the mask. During mold opening, the second driving wedge block 42 moves upward with the upper mold 1, and drives the second core-pulling slider 43 and the second core rod 44 to horizontally withdraw through the reverse sliding of the dovetail groove and the trapezoidal guide bar, so that the molded lateral hole groove of the mask is separated from the upper mold core 11, ensuring smooth demolding at the lateral hole groove of the mask without deformation damage.

[0044] Optionally, the second core-pulling slider 43 can also be connected to two second core rods 44. A plurality of protrusions are provided at the end of one second core rod 44 for molding the lateral hole groove of the mask, and a groove is provided at the end of the other second core rod 44 for molding the lateral protrusion of the mask.

[0045] In some embodiments, the upper mold 1 is provided with two upper mold cores 11, and the lower mold 2 is provided with two lower mold cores 21, correspondingly forming two molding cavities; including a third core-pulling assembly 5 provided between the two molding cavities. The third core-pulling assembly 5 includes a third mounting block 51, a third driving wedge block 52, two third core-pulling sliders 53 and two third core rods 54; the third mounting block 51 is fixed to the upper mold 1, the lower end of the third mounting block 51 is connected to the third driving wedge block 52, the two third core-pulling sliders 53 are located on both sides of the third driving wedge block 52, and both are horizontally slidably connected to the lower mold 2; inclined dovetail grooves are respectively provided on the two inclined surfaces of the third driving wedge block 52, and the two third core-pulling sliders 53 are respectively provided with trapezoidal guide bars slidably engaged with the corresponding dovetail grooves; one side of each of the two third core-pulling sliders 53 is connected to a third core rod 54, and the third core rod 54 slidably passes through the corresponding side of the upper mold core 11 and extends into the corresponding molding cavity.

[0046] In this embodiment, during mold clamping, the third mounting block 51 fixed to the upper mold 1 moves downward with the upper mold 1. The dovetail grooves on both sides of the third driving wedge block 52 connected to its lower end are respectively in sliding fit with the trapezoidal guide bars of the two third core-pulling sliders 53, converting the vertical movement into symmetric horizontal thrusts, and driving the two third core-pulling sliders 53 and the connected third core rods 54 to horizontally insert into the corresponding upper mold cores 11 and extend into the molding cavity synchronously. At this time, the ends of the two third core rods 54 and the inner walls of the two molding cavities on both sides together constitute a complete cavity for the lateral hole groove of the mask. During mold opening, the third driving wedge block 52 moves upward with the upper mold 1, and drives the two third core-pulling sliders 53 and the third core rods 54 to withdraw synchronously through the reverse sliding of the dovetail groove and the trapezoidal guide bar, so that the lateral hole grooves of the double-cavity mask are separated from the third core rods 54. Thus, the double-cavity synchronous molding and the efficient demolding of the lateral hole grooves are realized.

[0047] Optionally, two second core-pulling assemblies 4 are provided, and the two second core-pulling assemblies 4 are respectively arranged on opposite sides of the third core-pulling assembly 5, so as to form symmetrical lateral slots on the mask.

[0048] In some embodiments, the upper mold 1 includes an upper fixed plate 12, a stripper plate 13 and a fixed mold plate 14 connected in sequence from top to bottom, and the lower mold 2 includes a movable mold plate 22, a cushion block 23 and a lower fixed plate 24 connected in sequence from top to bottom.

[0049] The modular layered design allows the upper die core 11, the lower die core 21 and the core pulling assembly to be independently disassembled and assembled, thus shortening the maintenance time.

[0050] In some embodiments, the four corners of the upper mold 1 are provided with penetrating guide holes 25, and the lower mold 2 is provided with guide columns that are plugged into the guide holes 25; the lower end surface of the upper mold 1 is provided with a positioning groove, and the upper end surface of the lower mold is provided with a positioning protrusion that cooperates with the positioning groove; the contact surface between the upper mold core 11 and the lower mold core 21 adopts a bite-type tiger's mouth positioning.

[0051] The above three-level positioning structure eliminates mold motion errors and ensures that the mold always maintains high positioning accuracy during long-term high-pressure and high-frequency production.

[0052] In some embodiments, the side walls of the upper mold 1 and the lower mold 2 are locked in opening and closing by a locking mold component 6. The locking mold component 6 includes a buckle strip, one end of which is fixed to the upper mold 1 by screws, and the other end is provided with a long through hole, which is connected to the lower mold 2 by bolts.

[0053] The mold locking member 6 eliminates the mold parting surface gap under the high pressure of injection molding through mechanical rigid locking.

[0054] In some embodiments, a pouring port 7 is provided on the upper end surface of the upper mold 1 , and the pouring port 7 is connected to a pouring channel passing through the upper mold core 11 , and the pouring channel is connected to the molding cavity.

[0055] During injection molding, the molten plastic is injected into the pouring port 7 through the injection molding machine nozzle, flows downward along the main pouring channel, and is evenly distributed to the molding cavities on both sides through the branch pouring channel at the bifurcation. The symmetrical double-cavity pouring channel design reduces the filling time difference of the molding cavities on both sides.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-cavity mold for a medical oxygen atomizing mask, comprising an upper mold (1) and a lower mold (2), wherein the upper mold (1) is provided with an upper mold core (11), and the lower mold (2) is provided with a lower mold core (21), and when the upper mold (1) and the lower mold (2) are combined, the upper mold core (11) and the lower mold core (21) form a molding cavity; It is characterized in that The invention comprises a first core pulling assembly (3), wherein the first core pulling assembly (3) comprises a first mounting block (31), a driving inclined rod (32), a first core pulling slider (33) and a first core rod (34); the first mounting block (31) is fixedly connected to the upper mold (1), and the first core pulling slider (33) is horizontally slidably connected to the lower mold (2); the lower end of the first mounting block (31) is connected to the driving inclined rod (32), the first core pulling slider (33) is provided with an inclined groove, and the driving inclined rod (32) is slidably inserted into the inclined groove; one side of the first core pulling slider (33) is connected to the first core rod (34), and the first core rod (34) is slidably penetrated into the upper mold core (11); The end of the first core rod (34) is a hollow semi-cylindrical structure, and a pin is provided in the middle; when the film is closed, the end of the first core rod (34) cooperates with the upper mold core (11) to form a complete hollow cylinder, which is used to form the oxygen inhalation tube part of the oxygen inhalation atomizing mask.

2. A multi-cavity mold for a medical oxygen atomizing mask according to claim 1, characterized in that: The second core pulling assembly (4) comprises a second mounting block (41), a second driving wedge block (42), a second core pulling slider (43) and a second core rod (44); the second mounting block (41) is fixedly connected to the upper mold (1), and the second core pulling slider (43) is horizontally slidably connected to the lower mold (2); The lower end of the second mounting block (41) is connected to the second driving wedge block (42), a side inclined surface of the second driving wedge block (42) is provided with an inclined dovetail groove, and the second core-pulling slider (43) is provided with a trapezoidal guide bar that slidably cooperates with the dovetail groove; One side of the second core-pulling slider (43) is connected to the second core rod (44), and the second core rod (44) slides through the upper mold core (11) and extends into the molding cavity.

3. A multi-cavity mold for a medical oxygen atomizing mask according to claim 1, characterized in that: The upper mold (1) is provided with two upper mold cores (11), and the lower mold (2) is provided with two lower mold cores (21), so as to form two molding cavities accordingly; It comprises a third core pulling assembly (5) arranged between the two molding cavities, the third core pulling assembly (5) comprising a third mounting block (51), a third driving wedge block (52), two third core pulling slide blocks (53) and two third core rods (54); The third mounting block (51) is fixed to the upper mold (1), the lower end of the third mounting block (51) is connected to the third driving wedge block (52), and the two third core-pulling sliders (53) are located on both sides of the third driving wedge block (52) and are both horizontally slidably connected to the lower mold (2); Inclined dovetail grooves are respectively provided on the inclined surfaces on both sides of the third driving wedge block (52), and the two third core-pulling slide blocks (53) are both provided with trapezoidal guide bars that are slidably matched with the corresponding dovetail grooves; One side of the two third core-pulling sliders (53) is respectively connected to the third core rod (54), and the third core rod (54) slides through the upper mold core (11) on the corresponding side and extends into the corresponding molding cavity.

4. A multi-cavity mold for a medical oxygen atomizing mask according to claim 1, characterized in that: The upper mold (1) comprises an upper fixed plate (12), a stripper plate (13) and a fixed mold plate (14) which are connected in sequence from top to bottom, and the lower mold (2) comprises a movable mold plate (22), a cushion block (23) and a lower fixed plate (24) which are connected in sequence from top to bottom.

5. The multi-cavity mold for a medical oxygen atomizing mask according to claim 1, characterized in that: The four corners of the upper mold (1) are provided with penetrating guide holes (25), and the lower mold (2) is provided with guide columns that are plugged into and matched with the guide holes (25); the lower end surface of the upper mold (1) is provided with a positioning groove, and the upper end surface of the lower mold is provided with a positioning protrusion that matches with the positioning groove; the contact surface between the upper mold core (11) and the lower mold core (21) adopts a bite-type jaw positioning.

6. A multi-cavity mold for a medical oxygen atomizing mask according to claim 1, characterized in that: The side walls of the upper mold (1) and the lower mold (2) are locked in opening and closing via a mold locking member (6); the mold locking member (6) comprises a buckle strip, one end of which is fixed to the upper mold (1) via a screw, and the other end of which is provided with a long through hole and connected to the lower mold (2) via a bolt.

7. A multi-cavity mold for a medical oxygen atomizing mask according to claim 1, characterized in that: The upper end surface of the upper mold (1) is provided with a pouring port (7), the pouring port (7) is connected to a pouring channel passing through the upper mold core (11), and the pouring channel is connected to the molding cavity.

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