CN-224224429-U - Injection mold

CN224224429UCN 224224429 UCN224224429 UCN 224224429UCN-224224429-U

Abstract

The utility model provides an injection mold for preparing a cannula comprising a straight section and an arc section which are communicated. The injection mold comprises a mold body, a straight mold core, an arc mold core and a first driving mechanism. The die body comprises a first die holder and a second die holder, an injection cavity matched with the shape of a cannula to be prepared is formed in the die body, the injection cavity comprises a straight cavity section corresponding to the straight section and an arc cavity section corresponding to the arc section, the straight die core is arranged on the first die holder, the arc die core is arranged on the first die holder or the second die holder, the first driving mechanism comprises a first structure arranged on the first die holder and a second structure arranged on the second die holder, the straight die core is connected to the first structure, the first structure and the second structure are matched when the first structure and the second structure are matched, the second structure drives the first structure to enable the straight die core to move into the straight cavity section, and after the first die holder and the second die holder are matched, the straight die core is connected with the arc die core positioned in the arc cavity section, so that the length deviation of the cannula and the problem of unfinished inner cannula and the outer cannula are solved.

Inventors

HU CHENGBING
WU HAITAO
HAN YAXIONG
MAO YANFA

Assignees

深圳库珀医疗股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250515

Claims (10)

1. The injection mold is characterized by comprising a mold body, a straight mold core, an arc mold core and a first driving mechanism; The die body comprises a first die holder and a second die holder, after the first die holder and the second die holder are assembled, an injection cavity with a shape matched with that of an insertion pipe to be prepared is formed in the die body, and the injection cavity comprises a straight cavity section corresponding to the straight section and an arc cavity section corresponding to the arc section; the straight die core is arranged on the first die holder, and the arc die core is arranged on the first die holder or the second die holder; The first driving mechanism comprises a first structure and a second structure, the first structure is movably arranged on the first die holder, and the second structure is arranged on the second die holder; The straight die core is connected to the first structure, the first structure and the second structure are in alignment fit when in die assembly, the second structure drives the first structure to enable the straight die core to move into the straight die cavity section, and after the first die holder and the second die holder are in die assembly, the straight die core is connected with the arc die core located in the arc die cavity section.
2. The injection mold of claim 1 wherein said first structure and said second structure are aligned when the mold is opened, said second structure being operative to reposition said first structure so that said straight mold core can be moved axially out of said straight cavity section.
3. The injection mold of claim 2 wherein said first structure comprises a drive block, said straight mold core being connected to said drive block, said second structure comprising a plunger member disposed obliquely to said second mold base, said drive block being slidably disposed in said first mold base along an axial direction of said straight mold core, said drive block having an oblique mating through hole corresponding to said plunger member; When the die is opened, the pressing rod piece moves away from the matching through hole and drives the driving block to be far away from the straight cavity section.
4. The injection mold of claim 3 wherein the second structure further comprises a cam, the first structure further comprises a ramp disposed on the drive block that mates with the cam of the cam, and the drive block and the cam ramp cooperate to drive the drive block to slide in a direction toward the straight cavity section when the first and second mold holders are closed.
5. The injection mold of claim 1 further comprising a second drive mechanism, said arcuate mold core drivingly connected to said second drive mechanism, said second drive mechanism driving the arcuate mold core in rotation such that said arcuate mold core is movable into and out of said arcuate cavity segment.
6. The injection mold of claim 5 wherein the second drive mechanism comprises a turntable rotatably disposed on the second mold base and a power assembly drivingly connected to the turntable, the power assembly being configured to drive the turntable in rotation, the arcuate mold core being connected to the turntable, and the arcuate mold core being concentrically disposed with the turntable for synchronous rotation.
7. The injection mold of claim 6 wherein said power assembly comprises a rack drivingly connected to said power element, said circumferential side of said carousel being provided with engagement teeth for engaging said rack, said power element driving said rack in movement relative to said carousel.
8. The injection mold of any of claims 1-7, wherein the injection cavity comprises a first injection cavity and a second injection cavity in one-to-one correspondence with two cannulas, each having the straight cavity section and the arcuate cavity section; The number of the arc-shaped mold cores and the number of the straight-shaped mold cores are two, one arc-shaped mold core and one straight-shaped mold core are a group and respectively correspond to the straight section and the arc section of one insertion tube, the two straight mold cores are coaxially arranged or the axes of the two straight mold cores are parallel; When the first die holder and the second die holder are matched, the first driving mechanism drives the two straight die cores to be close to each other and respectively move into the straight cavity section of the first injection cavity and the straight cavity section of the second injection cavity.
9. The injection mold of any of claims 1-7 wherein said first mold base and said second mold base are closed to define a cavity, said mold body further comprising a cavity member removably connected to at least one of said first mold base and said second mold base, said cavity being formed in said cavity member, said straight mold core and said arcuate mold core being disposed in said cavity.
10. The injection mold of any of claims 1-7 wherein a cooling water circuit is provided within at least one of the first mold base and the second mold base.

Description

Injection mold Technical Field The utility model relates to the technical field of medical instruments, in particular to an injection mold. Background Tracheostomy tubes are widely used in the fields of anesthesia and respiration, and are mainly used for performing tracheostomy. The primary procedure of tracheotomy involves cutting the cervical trachea and inserting a tracheostomy tube to relieve dyspnea due to laryngeal dyspnea, respiratory dysfunction, or accumulation of lower airway secretions. According to the standard clause 6.1 of YY/T0338-2023, tracheostomy tube and connector, the cannula should have a proper curvature to adapt to the physiological structure of the trachea. The length of the inner cannula should be kept within a tolerance of + -1 mm from the length of the patient end of the outer cannula, in accordance with the provisions of clause 6.3.3 of the YY/T0338-2023 standard with respect to the lengths of the inner cannula and the outer cannula. However, the inner and outer cannulas produced in the related art have a problem that the above-described regulation of the lengths of the inner cannula and the outer cannula in clause 6.3.3 cannot be satisfied, and the inner cannula and the outer cannula have a problem that the adaptation is difficult due to the large length deviation in the related art. Therefore, the above-mentioned problems are technical problems to be solved in the art. Disclosure of utility model The utility model provides an injection mold which is used for solving the problem of length deviation of cannula preparation in the related technology. The injection mold is used for preparing a cannula, and the cannula comprises a straight section and an arc section which are communicated with each other; the injection mold comprises a mold body, a straight mold core, an arc mold core and a first driving mechanism; The mold body comprises a first mold base and a second mold base, after the first mold base and the second mold base are assembled, an injection cavity with the shape matched with the shape of the insertion pipe to be prepared is formed in the mold body, and the injection cavity comprises a straight cavity section corresponding to the straight section and an arc cavity section corresponding to the arc section; the straight die core is arranged on the first die holder, and the arc die core is arranged on the first die holder or the second die holder; the first driving mechanism comprises a first structure and a second structure, the first structure is movably arranged on the first die holder, and the second structure is arranged on the second die holder; The straight die core is connected to the first structure, the first structure and the second structure are in alignment fit when the die is closed, the second structure drives the first structure to enable the straight die core to move into the straight die cavity section, and after the die of the first die holder and the second die holder is closed, the straight die core is connected with the arc die core positioned in the arc die cavity section. In an alternative embodiment, the first structure and the second structure are aligned and matched when the mold is opened, and the second structure can drive the first structure to reset so that the straight mold core can move out of the straight cavity section along the axial direction of the straight mold core. In an alternative embodiment, the first structure comprises a driving block, the straight die core is connected to the driving block, the second structure comprises a pressing rod piece obliquely arranged on the second die holder, the driving block is slidably arranged on the first die holder along the axial direction of the straight die core, and the driving block is provided with an oblique matching through hole corresponding to the pressing rod piece; when the mold is opened, the compression bar piece moves away from the matching through hole and drives the driving block to be away from the straight cavity section. In an alternative embodiment, the second structure further comprises a wedge portion, the first structure further comprises an inclined surface arranged on the driving block and matched with the inclined surface of the wedge portion, and when the first die holder and the second die holder are matched, the driving block and the inclined surface of the wedge portion are matched to drive the driving block to slide in a direction approaching to the straight cavity section. In an alternative embodiment, the injection mold further comprises a second drive mechanism, the arcuate die being drivingly connected to the second drive mechanism, the second drive mechanism driving the arcuate die in rotation so that the arcuate die is movable into and out of the arcuate cavity segment. In an alternative embodiment, the second driving mechanism comprises a turntable and a power assembly, the turntable is rotationally arranged on the second die holder, the power assembly i