Batch molding device and molding method for disposable injection hoses for blood transfusion and infusion

Abstract

The present invention discloses a batch molding device and molding method for disposable injection rubber hoses for blood transfusion and infusion. The batch molding device includes a rubber mold, which includes a mold assembly and a lower mold assembly; an upper mold assembly includes an upper mold plate, an upper pad fixedly connected to the upper end surface of the upper mold plate, and a release mold plate abutting the lower end surface of the upper mold plate and being separable from the upper mold plate. The upper mold plate is densely distributed with upper mold plate mold sleeve mounting holes, and release mold plate mold sleeve mounting holes are provided on the release mold plate at positions corresponding to the upper mold plate mold sleeve mounting holes. The upper mold sleeve is fixed in the upper mold plate mold sleeve mounting holes, and the upper mold sleeve extends downward into the release mold plate mold sleeve mounting holes of the release mold plate and is slidably connected to the release mold sleeve mounting holes in the release mold plate; a thin sheet space is provided on the lower end surface of the release mold plate. The present invention can facilitate the removal of injection rubber hoses after batch molding, reduce the labor intensity of operators, and improve the efficiency of molding production and the quality of injection rubber hoses.

Description

Technical Field

[0001] The present invention relates to the technical field of preparation of disposable injection rubber tubes for blood transfusion and infusion, and in particular to a batch molding device and a molding method for disposable injection rubber tubes for blood transfusion and infusion. Background Art

[0002] In clinical practice, infusion sets used for patients sometimes need to be added with medicine during the infusion process, so injection hoses are often installed in infusion sets or blood transfusion sets for adding medicine. Figure 6 The following is an injection hose developed by our company. Previously, a conventional rubber die was used for batch pressing. This die consists of an upper mold plate and a lower mold plate. The upper mold plate is equipped with an upper mold sleeve and an upper mold core, which are coaxially arranged within the upper mold sleeve. The lower mold plate is equipped with a lower mold sleeve. The following problems were found during use of this rubber die:

[0003] Due to the long length of the injection hose, it is difficult to install the injection hose after the rubber film is pressed and the mold is opened. The operator needs to exert a large amount of operating force to remove the batch-pressed conjoined injection hose. Sometimes the injection hose is damaged when forcibly removing it. Summary of the Invention

[0004] To address the above-mentioned issues, the present invention proposes a batch molding device and method for disposable injection hoses for blood transfusion and infusion. These devices are designed to facilitate the removal of batch-molded injection hoses, reduce operator labor intensity, improve molding production efficiency, and enhance the quality of molded injection hoses. The specific technical solution is as follows:

[0005] The batch molding device of disposable blood transfusion and infusion injection hoses comprises a rubber die for installation on a flat vulcanizing press, wherein the rubber die comprises an upper die assembly for forming the outer shape cavity of the upper half of the injection hose, and a lower die assembly for simultaneously forming the outer shape cavity of the lower half of the injection hose and the inner hole cavity of the injection hose; wherein the upper die assembly comprises an upper template, an upper pad fixedly connected to the upper end face of the upper template, a release template abutting against the lower end face of the upper template and being separable from the upper template, and the upper template is densely covered with A number of upper template mold sleeve mounting holes are provided, and release template mold sleeve mounting holes are provided on the release template at positions corresponding to the upper template mold sleeve mounting holes. An upper mold sleeve for forming the outer shape cavity of the upper half of the injection hose is fixed in each of the upper template mold sleeve mounting holes. The upper mold sleeve extends downward into the release template mold sleeve mounting hole of the release template and is connected to the release template mold sleeve mounting hole in an upward and downward sliding manner; a thin sheet space is provided on the lower end surface of the release template for forming mutual connection of the injection hoses during rubber molding.

[0006] Preferably, the upper template mold sleeve mounting holes on the upper template and the release template mold sleeve mounting holes on the release template can be densely arranged in a matrix array.

[0007] In the present invention, the lower mold assembly includes a lower mold plate and a lower pad connected to the lower end surface of the lower mold plate, and a number of lower mold plate mold sleeve mounting holes are densely arranged on the lower mold plate, and a lower mold sleeve is fixed in each lower mold plate mold sleeve mounting hole, and a lower mold core is fixed in the lower mold sleeve. The lower mold core extends upward to the top of the lower mold plate, and a cavity of the upper half of the tube body of the injection hose is formed between the lower mold core and the lower mold sleeve, and the lower mold core forms the inner hole cavity of the injection hose; wherein, the middle and lower sections of the mold core of the lower mold core located above the lower mold plate have an outer drum shape.

[0008] In the present invention, an upper flange is provided on the outer circle of the upper end of the upper die sleeve, and the upper flange is clamped and positioned between the upper pad and the upper die plate.

[0009] In the present invention, a lower flange is provided on the outer circle of the lower end of the lower die sleeve, and the lower flange is limited between the lower pad and the lower template.

[0010] In the present invention, a positioning cylinder is provided at the lower end of the lower mold core, a counterbore is provided at the lower end of the lower mold sleeve, and the positioning cylinder at the lower end of the lower mold core is limited between the counterbore of the lower mold sleeve and the lower pad.

[0011] Preferably, guide shafts are respectively provided at the four corners of the lower mold assembly, and guide holes for sliding cooperation with the guide shafts are correspondingly provided at the four corners of the upper mold assembly and directly opposite to the guide shafts of the lower mold assembly.

[0012] Preferably, a downwardly extending limit block is fixed to the side of the upper pad, and a waist-shaped limit hole is opened on the limit block in the up and down directions. A limit screw is provided on the side of the release template, and the cylindrical section of the limit screw is positioned in the waist-shaped limit hole to limit the maximum distance that the release template can be separated from the upper template.

[0013] In the present invention, the plate vulcanizer is an improved plate vulcanizer, which includes an upper crossbeam, a lower base, four columns connected between the upper crossbeam and the lower base, a molding workbench arranged on the four columns for moving up and down, and a main oil cylinder arranged between the molding workbench and the lower base for realizing upward pressing of the molding workbench. An upper pressure head is fixedly provided at the lower end of the upper crossbeam, an upper heating platform is provided at the lower end of the upper pressure head, and a lower heating platform is provided at the upper end of the molding workbench; a first lifting mechanism is also provided on the upper pressure head for connecting the release template and realizing the independent up and down lifting of the release template.

[0014] Preferably, the lower mold assembly is mounted and fixed on the lower heating platform, the upper mold plate in the upper mold assembly is fixed to the upper heating platform via the upper pad, and the release mold plate in the upper mold assembly is connected to the upper pressure head via a first lifting mechanism.

[0015] Preferably, the improved flat-plate vulcanizing press is provided with a vertically lifting vacuum hood, which is lifted and lowered by a second lifting mechanism provided on the upper crossbeam; the interior of the vacuum hood is connected to the vacuum system through a vacuum pipeline.

[0016] Preferably, the vacuum hood is a cylindrical structure, the inner wall of the cylinder of the vacuum hood is slidably connected to the upper pressure head and sealed by a high-temperature resistant sealing ring, and a high-temperature resistant sealing gasket is provided on the lower end surface of the cylinder of the vacuum hood.

[0017] Preferably, the first lifting mechanism and the second lifting mechanism are cylinders.

[0018] As a further improvement of the present invention, the improved flat-plate vulcanizing press is provided with an online dust removal device for improving the dust removal effect, the online dust removal device includes an annular dust removal ring connected to the periphery of the vacuum cover, an annular cavity is provided inside the annular dust removal ring, and the lower end surface of the annular dust removal ring is densely covered with dust suction holes connected to the annular cavity, and the annular cavity is connected to the dust removal main pipe arranged in the molding workshop through a dust removal pipeline and a negative pressure fan arranged on the dust removal pipeline.

[0019] In the present invention, the batch injection hoses molded by the batch molding device are connected to each other by thin sheets, and can be subsequently cut by a dedicated die-cutting device to be dispersed into individual injection hoses.

[0020] A molding method for a batch molding device for disposable injection hoses for blood transfusion and infusion comprises the following steps:

[0021] (1) Installation of molding device: Install the rubber molding die on the improved flat vulcanizing press;

[0022] (2) Resetting the upper mold assembly: opening the first lifting mechanism so that the release plate in the upper mold assembly rises and rests against the lower end surface of the upper mold;

[0023] (3) Preheating: Turn on the heating system of the improved flat vulcanizing press to preheat the rubber mold;

[0024] (4) Spraying: The operator uses a can-type release agent sprayer to spray lubricate the cavity and lower core surface of the rubber mold;

[0025] (5) Loading: Lay the vulcanized rubber raw material plate on the top of the lower mold core of the lower mold assembly;

[0026] (6) Half-mold closing: Open the main oil cylinder of the improved flat vulcanizer, and the molding workbench rises, so that the lower mold assembly and the upper mold assembly are close to each other, so that the lower mold core on the lower mold plate pierces the vulcanized rubber raw material plate and partially enters the upper mold sleeve of the upper mold assembly;

[0027] (7) Vacuuming: Open the second lifting mechanism to move the vacuum cover down and cover the molding workbench; open the vacuum system to evacuate the inside of the vacuum cover;

[0028] (8) Closed mold molding: Synchronously open the second lifting mechanism and the main oil cylinder, so that the vacuum cover and the molding workbench rise synchronously to maintain the vacuum state inside the vacuum cover, and at the same time make the lower mold plate on the lower mold assembly closer to the release mold plate on the upper mold assembly, and press the vulcanized rubber raw material plate between the lower mold plate and the release mold plate. After it is in place, stay for a period of time to allow the rubber of the vulcanized rubber raw material plate to be fully vulcanized and enter the cavity and sheet space of the rubber pressing mold;

[0029] (9) One-time mold opening: After the vulcanization molding time is in place, the heating system stops heating, and the main oil cylinder is opened to move the lower mold assembly downward, so that the lower mold plate on the lower mold assembly is completely separated from the upper mold assembly, and the injection hoses connected by the thin rubber sheet are left on the upper mold assembly;

[0030] (10) Secondary mold opening: By opening the first lifting mechanism, the release template in the upper mold assembly moves downward and is completely separated from the upper mold. The injection hoses connected by the thin rubber sheet are separated from the upper mold and remain on the release template;

[0031] (11) Manual removal: The operator pulls off the injection hoses connected by the thin rubber sheet from the release template;

[0032] In the process of steps (3) to (11), when the vacuum cover is in the open state, the negative pressure blower of the online dust removal device is also turned on to perform online dust removal on the molding station of the improved flat-plate vulcanizing press to protect the health of the operators.

[0033] In particular, in order to further improve the dust removal effect, in the step (9), when the mold is opened for the first time, the vacuum hood and the molding workbench are synchronously raised and lowered so as to always cover the molding workbench; in the step (10), when the mold is opened for the second time, the vacuum hood is raised in two stages by opening the second lifting mechanism. The two-stage raising of the vacuum hood includes a first stage raising and a second stage raising. When the vacuum hood is raised in the first stage, a certain distance is first raised so that a ventilation gap is left between the lower end of the vacuum hood and the molding workbench and the vacuum hood stays for a period of time. Then, the second stage raising of the vacuum hood is implemented. The second stage raising is to continue to raise the vacuum hood upward and fully open it to facilitate the subsequent manual picking operation.

[0034] Preferably, a smoke sensor is provided in the annular dust removal ring. When the vacuum hood is in the first rising state, the smoke sensor continuously monitors the smoke concentration entering the annular cavity inside the annular dust removal ring. After meeting the standard (the smoke concentration is less than the set value), the second rising stage of the vacuum hood is implemented.

[0035] The beneficial effects of the present invention are:

[0036] First, the batch molding device and molding method of disposable injection hoses for blood transfusion and infusion of the present invention are provided with a release template in the upper mold assembly, and the release template can realize automatic secondary mold opening of the flat vulcanizer. Compared with the conventional mold structure with one-time mold opening, the operation force for removing the parts is greatly reduced, the labor intensity of the operator is greatly reduced, and the injection hose will not be damaged when removing the parts.

[0037] Second, the batch molding device and molding method of disposable injection hoses for blood transfusion and infusion of the present invention are provided with an online dust removal device for improving the dust removal effect on the improved flat-plate vulcanizing press, which overcomes the disadvantage that the molded smoke and dust in the traditional molding workshop overflow from the molding station and are then collected into the main dust removal pipe of the workshop. In particular, when a molding workshop is equipped with a large number of flat-plate vulcanizing presses, the dust removal effect is better, thereby protecting the health of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic structural diagram of a rubber die of a batch molding device for disposable injection hoses for blood transfusion and infusion according to the present invention;

[0039] Figure 2 This is a schematic diagram of the installation structure of the rubber mold on the flat vulcanizing machine;

[0040] Figure 3 It is a structural diagram of the upper die sleeve;

[0041] Figure 4 It is a structural diagram of the lower die sleeve;

[0042] Figure 5 It is a structural diagram of the lower mold core;

[0043] Figure 6 This is a schematic diagram of the structure of a disposable injection hose for blood transfusion and infusion;

[0044] Figure 7 The diagram is a schematic diagram of the structure of disposable injection hoses for blood transfusion and infusion after batch compression molding.

[0045] In the figure: 1. Injection hose, 2. Flat vulcanizing press, 3. Rubber die, 4. Upper half of injection hose, 5. Lower half of injection hose, 6. Inner cavity of injection hose, 7. Upper template, 8. Upper pad, 9. Release template, 10. Upper mold assembly, 11. Lower mold assembly, 12. Upper mold sleeve, 13. Sheet space, 14. Lower template, 15. Lower pad, 16. Lower die sleeve, 17. Lower die core, 18. Outer drum shape, 19. Upper flange, 20. Lower flange, 21. Positioning cylinder, 22. Reaming hole, 23. Guide shaft, 24. Guide hole, 25. Limit block, 26. Waist-shaped limit hole, 27. Limit screw, 28. Upper crossbeam, 29. Lower base, 30. Column, 31. Molding workbench, 32. Main oil cylinder, 33. Upper pressure head, 34. Upper heating table, 35. Lower heating table, 36. First lifting mechanism, 37. Second lifting mechanism, 38. Vacuum cover, 39. High temperature resistant sealing ring, 40. High temperature resistant sealing gasket, 41. Online dust removal device, 42. Annular dust removal ring, 43. Annular cavity, 44. Dust suction hole, 45. Dust removal pipeline, 46. Negative pressure fan, 47. Dust removal main pipe, 48. Smoke sensor. DETAILED DESCRIPTION

[0046] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Example 1:

[0047] like Figures 1 to 7 The figure shows an embodiment of a batch molding apparatus for disposable blood transfusion and infusion injection hoses of the present invention, comprising a rubber mold 3 for mounting on a flat vulcanizer 2. The rubber mold 3 comprises an upper mold assembly 10 for forming the outer cavity of the upper half 4 of the injection hose 1, and a lower mold assembly 11 for simultaneously forming the outer cavity of the lower half 5 of the injection hose 1 and the inner cavity 6 of the injection hose 1. The upper mold assembly 10 comprises an upper mold plate 7, an upper pad 8 fixedly connected to the upper end surface of the upper mold plate 7, and a release mold plate abutting the lower end surface of the upper mold plate 7 and being separable from the upper mold plate 7. 9. A number of upper template mold sleeve mounting holes are densely distributed on the upper template 7, and release template mold sleeve mounting holes are provided on the release template 9 at positions corresponding to the upper template mold sleeve mounting holes. An upper mold sleeve 12 for forming the outer shape cavity of the upper half 4 of the injection hose is fixed in each of the upper template mold sleeve mounting holes. The upper mold sleeve 12 extends downward to the release template mold sleeve mounting hole of the release template 9 and is connected to the release template mold sleeve mounting hole by sliding up and down; a thin sheet space 13 is provided on the lower end surface of the release template 9 for forming the mutual connection of the injection hoses 1 during rubber molding.

[0048] Preferably, the upper template mold sleeve mounting holes on the upper template 7 and the release template mold sleeve mounting holes on the release template 9 can be densely arranged in a matrix array.

[0049] In this embodiment, the lower mold assembly 11 includes a lower mold plate 14 and a lower pad 15 connected to the lower end surface of the lower mold plate 14. The lower mold plate 14 is densely provided with a number of lower mold plate mold sleeve mounting holes, and a lower mold sleeve 16 is fixed in each lower mold plate mold sleeve mounting hole. A lower mold core 17 is fixed in the lower mold sleeve 16. The lower mold core 17 extends upward to the top of the lower mold plate 14, and a cavity of the upper half 4 of the tube body of the injection hose 1 is formed between the lower mold core 17 and the lower mold sleeve 16. The lower mold core 17 forms the inner hole cavity of the injection hose 1; wherein, the middle and lower section of the mold core of the lower mold core 17 located above the lower mold plate 14 has an outer drum shape 18.

[0050] In this embodiment, an upper flange 19 is provided on the outer circle of the upper end of the upper die sleeve 12 , and the upper flange 19 is clamped and positioned between the upper pad 8 and the upper die plate 9 .

[0051] In this embodiment, a lower flange 20 is provided on the outer circle of the lower end of the lower die sleeve 16 , and the lower flange 20 is limited between the lower pad 15 and the lower die plate 14 .

[0052] In this embodiment, a positioning cylinder 21 is provided at the lower end of the lower mold core 17, and a countersunk hole 22 is provided at the lower end of the lower mold sleeve 16. The lower end positioning cylinder 21 of the lower mold core 17 is limited between the countersunk hole 22 of the lower mold sleeve 16 and the lower pad 15.

[0053] Preferably, guide shafts 23 are respectively provided at the four corners of the lower mold assembly 11, and guide holes 24 for sliding cooperation with the guide shafts 23 are correspondingly provided at the four corners of the upper mold assembly 10 and directly opposite to the guide shafts 23 of the lower mold assembly 11.

[0054] Preferably, a downwardly extending limit block 25 is fixed to the side of the upper pad 8, and a waist-shaped limit hole 26 is opened on the limit block 25 in the up and down directions. A limit screw 27 is provided on the side of the release template 9, and the cylindrical section of the limit screw 27 is positioned in the waist-shaped limit hole 26 to limit the maximum distance that the release template 9 is separated from the upper template 7.

[0055] In this embodiment, the plate vulcanizer 2 is an improved plate vulcanizer, which includes an upper crossbeam 28, a lower base 29, four columns 30 connected between the upper crossbeam 28 and the lower base 29, a molding workbench 31 arranged on the four columns 30 for moving up and down, and a main oil cylinder 32 arranged between the molding workbench 31 and the lower base 29 for realizing upward pressing of the molding workbench 31. An upper pressure head 33 is fixedly provided at the lower end of the upper crossbeam 28, an upper heating platform 34 is provided at the lower end of the upper pressure head 33, and a lower heating platform 35 is provided at the upper end of the molding workbench 31; the upper pressure head 33 is also provided with a first lifting mechanism 36 for connecting the release template 9 and realizing the independent lifting and lowering of the release template 9.

[0056] Preferably, the lower mold assembly 11 is mounted and fixed on the lower heating platform 35, the upper mold plate 7 in the upper mold assembly 10 is fixed on the upper heating platform 34 through the upper pad 8, and the release mold plate 9 in the upper mold assembly 10 is connected to the upper pressure head 33 through a first lifting mechanism 36.

[0057] Preferably, the improved flat-plate vulcanizer 2 is provided with a vertically lifting vacuum hood 38, and the vacuum hood 38 is lifted and lowered by a second lifting mechanism 37 provided on the upper crossbeam 28; the interior of the vacuum hood 38 is connected to the vacuum system through a vacuum pipeline (not shown in the figure).

[0058] Preferably, the vacuum hood 38 is a cylindrical structure, the inner wall of the cylinder of the vacuum hood 38 is slidably connected to the upper pressure head 33 and sealed by a high-temperature resistant sealing ring 39, and a high-temperature resistant sealing gasket 40 is provided on the lower end surface of the cylinder of the vacuum hood 38.

[0059] Preferably, the first lifting mechanism 36 and the second lifting mechanism 37 are cylinders.

[0060] As a further improvement of this embodiment, the improved flat-plate vulcanizing press 2 is provided with an online dust removal device 41 for improving the dust removal effect. The online dust removal device 41 includes an annular dust removal ring 42 connected to the periphery of the vacuum cover 38. An annular cavity 43 is provided inside the annular dust removal ring 42. The lower end surface of the annular dust removal ring 42 is densely covered with dust suction holes 44 connected to the annular cavity 43. The annular cavity 43 is connected to the dust removal main pipe 47 arranged in the molding workshop through a dust removal pipeline 45 and a negative pressure fan 46 arranged on the dust removal pipeline 45.

[0061] In this embodiment, the batch injection hoses 1 molded by the batch molding device are connected to each other by thin sheets, and can be subsequently cut by a dedicated die-cutting device to be dispersed into individual injection hoses 1. Example 2:

[0062] A molding method using the batch molding device for disposable blood transfusion and infusion injection hoses of Example 1 includes the following steps:

[0063] (1) Installation of the molding device: Install the rubber molding die 3 onto the improved flat vulcanizing machine 2;

[0064] (2) Resetting the upper mold assembly: opening the first lifting mechanism 36 so that the release plate 9 in the upper mold assembly 10 rises and rests against the lower end surface of the upper mold plate 7;

[0065] (3) Preheating: Turn on the heating system of the improved flat plate vulcanizer 2 to preheat the rubber mold 3;

[0066] (4) Spraying: The operator uses a can-type release agent sprayer to spray lubricate the cavity and lower core surface of the rubber die 3;

[0067] (5) Loading: Lay the vulcanized rubber raw material plate on the top of the lower mold core 17 of the lower mold assembly 11;

[0068] (6) Half-mold closing: The main oil cylinder 32 of the improved flat plate vulcanizer 2 is opened, and the molding table 31 rises, so that the lower mold assembly 11 and the upper mold assembly 10 are close to each other, so that the lower mold core 17 on the lower mold plate 14 pierces the vulcanized rubber raw material plate and partially enters the upper mold sleeve 12 of the upper mold assembly 10;

[0069] (7) Vacuuming: Start the second lifting mechanism 37 so that the vacuum cover 38 moves down and covers the molding workbench 31; start the vacuuming system to vacuum the interior of the vacuum cover 38;

[0070] (8) Closed mold molding: Synchronously open the second lifting mechanism 37 and the main oil cylinder, so that the vacuum cover 38 and the molding workbench 31 rise synchronously to maintain the vacuum state inside the vacuum cover 38, and at the same time make the lower mold plate on the lower mold assembly closer to the release mold plate on the upper mold assembly, and press the vulcanized rubber raw material plate between the lower mold plate 14 and the release mold plate 9. After it is in place, stay for a period of time to allow the rubber material of the vulcanized rubber raw material plate to be fully vulcanized and enter the cavity and sheet space 13 of the rubber pressing mold 3;

[0071] (9) One-time mold opening: After the vulcanization molding time is reached, the heating system stops heating, and the main oil cylinder 32 is opened to move the lower mold assembly 11 downward, so that the lower mold plate 14 on the lower mold assembly 11 is completely separated from the upper mold assembly 10, and the injection hoses 1 connected by the thin sheet rubber are left on the upper mold assembly 10;

[0072] (10) Secondary mold opening: By opening the first lifting mechanism 36, the release plate 9 in the upper mold assembly 10 moves downward and is completely separated from the upper mold plate 7. The injection hoses 1 connected by the thin rubber sheet are separated from the upper mold plate 7 and remain on the release plate 9;

[0073] (11) Manual removal: The operator pulls off the injection hoses 1 connected by the thin rubber sheet from the release template 9;

[0074] In the process of steps (3) to (11), when the vacuum cover 38 is in the open state, the negative pressure blower 46 of the online dust removal device 41 is also turned on to perform online dust removal on the molding station of the improved flat-plate vulcanizing press 2 to protect the health of the operators.

[0075] In particular, in order to further improve the dust removal effect, in the step (9), when the mold is opened for the first time, the vacuum hood 38 is synchronously lifted and lowered with the molding workbench 31 so as to always cover the molding workbench 31; in the step (10), when the mold is opened for the second time, the vacuum hood 38 is lifted in two stages by opening the second lifting mechanism 37. The two-stage lifting of the vacuum hood 38 includes a first stage lifting and a second stage lifting. In the first stage lifting, the vacuum hood 38 is first lifted by a certain distance so that a ventilation gap is left between the lower end of the vacuum hood 38 and the molding workbench 31 and the vacuum hood stays for a period of time. Then, the second stage lifting of the vacuum hood 38 is implemented. The second stage lifting is to continue to lift the vacuum hood 38 upward and fully open it to facilitate the subsequent manual removal operation.

[0076] Preferably, a smoke sensor 48 is provided in the annular dust removal ring 42. When the vacuum cover 38 is in the first rising state, the smoke sensor 48 continuously monitors the smoke concentration entering the annular cavity 43 inside the annular dust removal ring 42. After meeting the standard (the smoke concentration is less than the set value), the second rising of the vacuum cover 38 is implemented.

[0077] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A batch molding device for disposable injection hoses for blood transfusion and infusion, characterized in that: The invention also provides a method for the rubber molding of the present invention to be installed on the flat vulcanizing machine, wherein the rubber molding comprises an upper mold assembly for forming the outer shape cavity of the upper half section of the injection hose, and a lower mold assembly for simultaneously forming the outer shape cavity of the lower half section of the injection hose and the inner hole cavity of the injection hose; wherein the upper mold assembly comprises an upper mold plate, an upper pad fixedly connected to the upper end surface of the upper mold plate, a release mold plate abutting against the lower end surface of the upper mold plate and separable from the upper mold plate in the upper and lower directions; the upper mold plate is densely provided with a number of upper mold plate sleeve mounting holes, and a release mold plate sleeve mounting hole is provided on the release mold plate at a position corresponding to the upper mold plate sleeve mounting hole, an upper mold sleeve for forming the outer shape cavity of the upper half section of the injection hose is fixed in each of the upper mold plate sleeve mounting holes, the upper mold sleeve extends downwardly into the release mold plate sleeve mounting hole of the release mold plate and is slidably connected to the release mold plate sleeve mounting hole in the upper and lower directions; a thin sheet space for forming the mutual connection of the injection hoses during rubber molding is provided on the lower end surface of the release mold plate; The lower mold assembly includes a lower mold plate and a lower pad connected to the lower end surface of the lower mold plate. The lower mold plate is densely provided with a number of lower mold plate sleeve mounting holes. A lower mold sleeve is fixed in each lower mold plate sleeve mounting hole. A lower mold core is fixed in the lower mold sleeve. The lower mold core extends upward to the top of the lower mold plate, and a cavity of the lower half of the tube body of the injection hose is formed between the lower mold core and the lower mold sleeve. The lower mold core forms the inner hole cavity of the injection hose. The middle and lower sections of the lower mold core located above the lower mold plate have an outer drum shape. The plate vulcanizer is an improved plate vulcanizer, which includes an upper crossbeam, a lower base, four columns connected between the upper crossbeam and the lower base, a molding workbench arranged on the four columns for moving up and down, and a main oil cylinder arranged between the molding workbench and the lower base for realizing the upward pressing of the molding workbench. An upper pressure head is fixedly provided at the lower end of the upper crossbeam, an upper heating platform is provided at the lower end of the upper pressure head, and a lower heating platform is provided at the upper end of the molding workbench; the upper pressure head is also provided with a first lifting mechanism for connecting the release template and realizing the independent lifting and lowering of the release template; The lower mold assembly is mounted and fixed on the lower heating platform, the upper mold plate in the upper mold assembly is fixed on the upper heating platform via the upper pad, and the release mold plate in the upper mold assembly is connected to the upper pressure head via a first lifting mechanism; The improved flat-plate vulcanizing machine is provided with an up-and-down lifting vacuum hood, which is lifted and lowered by a second lifting mechanism provided on the upper crossbeam; the interior of the vacuum hood is connected to the vacuum system through a vacuum pipeline.

2. The batch molding device for disposable blood transfusion and infusion injection hoses according to claim 1, characterized in that: Guide shafts are respectively provided at the four corners of the lower mold assembly, and guide holes for slidingly cooperating with the guide shafts are correspondingly provided at the four corners of the upper mold assembly and at positions facing the guide shafts of the lower mold assembly.

3. The batch molding device for disposable injection hoses for blood transfusion and infusion according to claim 1, characterized in that: The vacuum cover is a cylindrical structure, the inner wall of the cylinder of the vacuum cover is slidably connected to the upper pressure head and sealed by a high-temperature resistant sealing ring, and a high-temperature resistant sealing gasket is provided on the lower end surface of the cylinder of the vacuum cover.

4. The batch molding device for disposable injection hoses for blood transfusion and infusion according to claim 1, characterized in that: The first lifting mechanism and the second lifting mechanism are cylinders.

5. The batch molding device for disposable injection hoses for blood transfusion and infusion according to claim 1, characterized in that: The improved flat-plate vulcanizing press is provided with an online dust removal device for improving the dust removal effect. The online dust removal device includes an annular dust removal ring connected to the periphery of the vacuum cover. An annular cavity is provided inside the annular dust removal ring. The lower end surface of the annular dust removal ring is densely covered with dust suction holes connected to the annular cavity. The annular cavity is connected to the dust removal main pipe provided in the molding workshop through a dust removal pipeline and a negative pressure fan provided on the dust removal pipeline.

6. The molding method of the batch molding device for disposable blood transfusion and infusion injection hoses according to claim 5, characterized in that: The steps include: (1) Installation of molding device: Install the rubber molding die on the improved flat vulcanizing press; (2) Resetting the upper mold assembly: opening the first lifting mechanism so that the release plate in the upper mold assembly rises and rests against the lower end surface of the upper mold; (3) Preheating: Turn on the heating system of the improved flat vulcanizing press to preheat the rubber mold; (4) Spraying: The operator uses a can-type release agent sprayer to spray lubricate the cavity and lower core surface of the rubber mold; (5) Loading: Lay the vulcanized rubber raw material plate on the top of the lower mold core of the lower mold assembly; (6) Half-mold closing: Open the main oil cylinder of the improved flat vulcanizer, and the molding workbench rises, so that the lower mold assembly and the upper mold assembly are close to each other, so that the lower mold core on the lower mold plate pierces the vulcanized rubber raw material plate and partially enters the upper mold sleeve of the upper mold assembly; (7) Vacuuming: Open the second lifting mechanism to move the vacuum cover down and cover the molding workbench; open the vacuum system to evacuate the inside of the vacuum cover; (8) Closed mold molding: Synchronously open the second lifting mechanism and the main oil cylinder, so that the vacuum cover and the molding workbench rise synchronously to maintain the vacuum state inside the vacuum cover, and at the same time make the lower mold plate on the lower mold assembly closer to the release mold plate on the upper mold assembly, and press the vulcanized rubber raw material plate between the lower mold plate and the release mold plate. After it is in place, stay for a period of time to allow the rubber of the vulcanized rubber raw material plate to be fully vulcanized and enter the cavity and sheet space of the rubber pressing mold; (9) One-time mold opening: After the vulcanization molding time is in place, the heating system stops heating, and the main oil cylinder is opened to move the lower mold assembly downward, so that the lower mold plate on the lower mold assembly is completely separated from the upper mold assembly, and the injection hoses connected by the thin rubber sheet are left on the upper mold assembly; (10) Secondary mold opening: By opening the first lifting mechanism, the release template in the upper mold assembly moves downward and is completely separated from the upper mold. The injection hoses connected by the thin rubber sheet are separated from the upper mold and remain on the release template; (11) Manual removal: The operator pulls off the injection hoses connected by the thin rubber sheet from the release template; In the process of steps (3) to (11), when the vacuum cover is in the open state, the negative pressure blower of the online dust removal device is also turned on to perform online dust removal on the molding station of the improved flat-plate vulcanizing press to protect the health of the operators.

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