Method and device for removing mold

Abstract

A method for removing a mold, first conveying the mold to a first removal station to remove a profiling tube, then conveying a profiling seat, a first profiling part and a second profiling part to a second removal station, extending a push rod into a through hole to act on the profiling seat, and causing the profiling seat to fall downward and collide, and the profiling-completed blank is separated from the profiling seat. The method provided by the present invention is suitable for removing a mold of a profiling antibacterial film, is conducive to the rapid separation of the antibacterial film, and is combined with equipment implemented in an automated manner to reduce manual participation in the production process and reduce the manufacturing cost of the product.

Description

Technical Field

[0001] The present invention relates to automated equipment, and in particular to a mold removal method for producing medical devices, and automated equipment for implementing the method. Background Art

[0002] Biomedical materials (biomaterials) are a type of natural or synthetic special functional materials that are used to contact and interact with life systems and can diagnose, treat, replace, repair or induce regeneration of their cells, tissues and organs. For example: polyethylene films, polytetrafluoroethylene films, silicone rubber films and tubes for making artificial organs such as lungs, kidneys, hearts, larynx, trachea, bile ducts and corneas, and polyester fibers for making blood vessels and peritoneum. Another example: biodegradable polyesters for absorbable surgical sutures. Another example: chitosan and collagen used to make hemostatic or antibacterial dressings.

[0003] Although 3D printing technology has been widely used, medical devices manufactured with it are still rare. Mold manufacturing is still the main technology currently used, which is suitable for large-scale and low-cost manufacturing of products. Therefore, as the last link in manufacturing, mold removal not only affects the quality of the product, but also has a huge impact on the production efficiency of the product.

[0004] Chinese patent ZL201220057460.4 discloses a disposable neonatal gastroschisis treatment bag. The medical silicone bag is generally conical in shape, can be easily removed from a production mold, has a high yield rate, and is convenient for large-scale production.

[0005] Chinese patent ZL201210185642.4 discloses a disassembly device for a threaded die for inner hole of a mid-circumferential skeleton, which includes a machine, a motor, a multi-stage gear set transmission mechanism, a spring, a sleeve and a pressing plate. The multi-stage gear set transmission mechanism is located in a stacked frame above the machine. The multi-stage gear set transmission mechanism refers to a driving wheel of a primary gear set meshing and transmitting multiple driven wheels. The gear shafts of multiple driven wheels of the primary gear set respectively pass through the upper partition plate and are connected to the driving wheel of the secondary gear set. The driving wheels of the secondary gear set respectively mesh and transmit multiple driven wheels. The multi-stage gear set is sequentially connected in a step-by-step transmission manner. After the gear shafts of the driven wheels of the uppermost gear set pass through the upper partition plate respectively, springs and sleeves are mounted on them. The pressing plate is provided with a hole for the threaded die for inner hole of the mid-circumferential skeleton to pass through, which is engaged with the sleeve one by one. The motor is located below the machine, and the gear shaft of the driving wheel of the primary gear set passes downward through the machine and is connected to the motor in a transmission manner. This technical solution greatly improves production efficiency, but it is only applicable to threaded die for inner hole of the mid-circumferential skeleton.

[0006] Chinese patent application 201711459094.9 discloses a casting mold quick locking and disengaging device and its use method, which is used to lock and disengage the mold and the movable part, the tension rod is provided with a bending part and a stopper, the first positioning pin sheet and the second positioning pin sheet are provided with an oblong hole, the mold is provided with a first mounting hole, the movable part is provided with a second mounting hole, the first positioning pin sheet is fixedly connected to the joint between the movable part and the mold, the second positioning pin sheet is fixedly connected to the outside of the mold, the oblong hole, the first mounting hole and the second mounting hole are connected, the tension rod is inserted into the first mounting hole and the second mounting hole, the stopper of the tension rod passes through the oblong hole of the first positioning pin sheet and is placed in the second mounting hole, the bending part of the tension rod passes through the oblong hole of the second positioning pin sheet and is placed outside the mold, and the wedge block is inserted between the bending part of the tension rod and the second positioning pin sheet to fix and tighten the mold and the movable part. Although the technical solution is easy to operate, it is specialized and difficult to apply to the manufacture of various medical devices. Summary of the invention

[0007] One object of the present invention is to provide a method for removing a mold, which is used for manufacturing a medical antibacterial film and improving the automation level of production.

[0008] Another object of the present invention is to provide a mold detaching device for use in the manufacture of medical antibacterial films, thereby reducing manual participation in the production process.

[0009] The medical antibacterial membrane of the present invention is made of biomedical materials (such as chitosan complexed iodine) as the main material, and is produced after mold pressing, mold removal, and freeze drying.

[0010] The mold for the pressed antibacterial film, or mold, comprises:

[0011] The press-forming seat comprises a main body and a press-forming column, wherein the main body is cylindrical, the press-forming column stands on the main body, and extends toward the main body along the lower end side of the press-forming column to form a receiving groove for receiving biomedical materials;

[0012] A first press-formed part, which is semi-cylindrical in shape and has a first groove body arranged along its axial direction;

[0013] The second pressed part is semi-cylindrical and has a second groove body arranged along its axial direction;

[0014] A profiled tube including a lumen;

[0015] The press-formed seat, the first press-formed part and the second press-formed part are assembled to form a cylinder, the press-formed cylinder is matched with the first trough body and the second trough body in a gap, and a through hole is formed at one end of the cylinder, and the gap accommodates biomedical materials. The press-formed tube clamps the first press-formed part, the second press-formed part and the press-formed seat in the tube cavity.

[0016] A method for removing a mold comprises the steps of first conveying the mold to a first removing station to remove a profiling tube, then conveying a profiling seat, a first profiling part and a second profiling part to a second removing station, extending a push rod into a through hole to act on the profiling seat, and causing the profiling seat to fall downward and collide, thereby separating the profiling-completed blank from the profiling seat.

[0017] Another method for removing the mold is to first transport the mold to the first removal station and clamp the corrugated tube, and at the same time apply force to the first corrugated part and the second corrugated part to remove the corrugated tube, and then transport the corrugated seat, the first corrugated part and the second corrugated part to the second removal station, and clamp the first corrugated part and the second corrugated part, and extend the push rod into the through hole to act on the corrugated seat to separate the first corrugated part and the second corrugated part from the corrugated seat. During the downward falling and impact process of the corrugated seat, the already corrugated blank is separated from the corrugated seat.

[0018] After the mold is removed by the method of the present invention, the separated blank is freeze-dried to obtain the final product.

[0019] In order to implement the method for removing the mold of the present invention, a device is also provided, comprising

[0020] frame;

[0021] A first conveying mechanism, which is arranged on the frame;

[0022] A first detaching mechanism receives the mold from the first conveying mechanism, and includes a clamping wheel and a first ejector rod. The first ejector rod is driven by a first cylinder to perform ejection on the first press-formed part and the second press-formed part.

[0023] A second detaching mechanism, which is used to separate the first press part and the second press part from the press seat, comprises a second ejector rod driven by a second cylinder;

[0024] The second conveying mechanism is arranged between the first disengaging mechanism and the second disengaging mechanism, and one end of the second conveying mechanism receives the mold for removing the corrugated tube output from the first disengaging mechanism, conveys it to the other end, and is captured by the second disengaging mechanism.

[0025] Another device including

[0026] frame;

[0027] A first conveying mechanism, which is arranged on the frame;

[0028] A first detaching mechanism receives the mold from the first conveying mechanism, and includes a clamping wheel and a first ejector rod. The first ejector rod is driven by a first cylinder to perform ejection on the first press-formed part and the second press-formed part.

[0029] The second detaching mechanism is used to separate the first and second press-forming parts from the press-forming seat, and includes: a first rotating wheel, a second rotating wheel and a second ejector rod, wherein the first rotating wheel and the second rotating wheel rotate synchronously in opposite directions to clamp the first and second press-forming parts respectively, and the second ejector rod at the top is driven by the second cylinder to extend into the through hole to act on the press-forming seat;

[0030] The second conveying mechanism is arranged between the first disengaging mechanism and the second disengaging mechanism, and one end of the second conveying mechanism receives the mold for removing the corrugated tube output from the first disengaging mechanism, conveys it to the other end, and is captured by the second disengaging mechanism.

[0031] The device of the present invention further provides a sorting piece on the second conveying mechanism, which includes an inlet and an outlet, so that the molds entering from the inlet are output from the outlet one by one and then captured by the second detaching mechanism. With the help of the sorting piece, the molds enter the second detaching mechanism one by one, and the molds are detached one by one in an orderly manner and the frozen blanks are separated.

[0032] The beneficial effects brought by the present invention are:

[0033] The method provided by the invention is suitable for removing the mold of the pressed antibacterial film and is beneficial to the rapid separation of the antibacterial film.

[0034] The equipment provided by the present invention is used for manufacturing medical antibacterial films, and is implemented in an automated manner, thereby reducing manual participation in production links and lowering the manufacturing cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of an embodiment of a pressing seat of a mold of the present invention;

[0036] Figure 2 for Figure 1 A cross-sectional schematic diagram of an angle of the press seat shown;

[0037] Figure 3 It is a structural schematic diagram of an embodiment of a press-formed part of a mold of the present invention;

[0038] Figure 4 For 2 pieces Figure 3 A cross-sectional schematic diagram of an embodiment of the press-formed part after assembly shown;

[0039] Figure 5 It is a structural schematic diagram of an embodiment of a profiled tube of a mold of the present invention;

[0040] Figure 6 It is a structural schematic diagram of an embodiment of the device of the present invention;

[0041] Figure 7 for Figure 6 A schematic diagram of the device shown from another angle;

[0042] Figure 8 for Figure 6 A schematic diagram of the device shown from another angle. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The embodiments of the present invention are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0044] Figure 1 FIG. 1 is a schematic structural diagram of an embodiment of a pressing seat of a mold of the present invention. Figure 2 for Figure 1 The cross-sectional diagram of the press seat at an angle is shown. Figure 3 FIG. 1 is a schematic structural diagram of an embodiment of a press-formed part of a mold of the present invention. Figure 4 For 2 pieces Figure 3 The cross-sectional schematic diagram of an embodiment of the press-formed part after assembly shown in FIG. Figure 5 It is a structural schematic diagram of an embodiment of a profiled tube of a mold of the present invention. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the mold of this embodiment is used for the compression molding of medical antibacterial membrane, including a compression molding seat 300, a first compression molding member 100, a second compression molding member 200 and a compression molding tube 400. The compression molding seat 300 is assembled with the first compression molding member 100 and the second compression molding member 200 to form a cylindrical hoop in the tube cavity 410.

[0045] The profiling seat 300 includes a body 310 and a profiling column 320 . The body 310 is cylindrical. The profiling column 320 stands on the body 310 and extends toward the body 310 along the lower end side of the profiling column 320 to form a receiving groove 330 for accommodating biomedical materials.

[0046] The first press-formed part 100 is semi-cylindrical, and a first slot 110 is arranged along its axial direction. The second press-formed part 200 is semi-cylindrical, and a second slot (not shown) is arranged along its axial direction. The press-formed column 320 is loosely matched with the first slot 110 and the second slot, and a through hole 500 is formed at one end of the cylinder.

[0047] Figure 6 It is a structural schematic diagram of an embodiment of the device of the present invention, Figure 7 for Figure 6 A schematic diagram of the device from another angle is shown. Figure 8 for Figure 6 A schematic diagram of the device from another angle is shown. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,like Figure 6 , Figure 7 and Figure 8 As shown, the device is used to automatically remove the mold of this embodiment, which includes a first conveying mechanism 10, a second conveying mechanism 20, a first discharging mechanism 30, a second discharging mechanism 40 and a frame 50. The first conveying mechanism 10, the second conveying mechanism 20, the first discharging mechanism 30 and the second discharging mechanism 40 are arranged on the frame 50. The first conveying mechanism 10 conveys the mold to the first discharging mechanism 20, which includes a clamping wheel 21 and a first ejector 22, and the first ejector 22 is driven by a first cylinder 23 to reciprocate.

[0048] The second conveying mechanism 20 is arranged on the frame 50, and one end of the second conveying mechanism 20 receives the molds for removing the profiling tube output from the first detaching mechanism 30, and conveys them to the other end to be captured by the second detaching mechanism 40. During this time, the molds are acted upon by the sorting member 60 arranged on the second conveying mechanism, so that the molds entering from the entrance are outputted from the exit one by one, and then captured by the second detaching mechanism 40. With the help of the sorting member 60, the second conveying mechanism 20 cooperates with the rotation of the first rotating wheel 41 and the second rotating wheel 42, and the molds enter the fixed holes formed by the edges of the first rotating wheel 41 and the second rotating wheel 42 one by one, and continue to detach the molds (such as: separating the profiling seat 300) and separate the frozen blanks one by one in an orderly manner.

[0049] The second disengaging mechanism 40 includes a first rotating wheel 41, a second rotating wheel 42 and a second push rod 43. The first rotating wheel 41 and the second rotating wheel 42 clamp the first press part 100 and the second press part 200 respectively. At the same time, the second push rod 43 above is driven by the second cylinder 44, extends into the through hole and acts on the press seat to separate the first press part 100 and the second press part 200 from the press seat 300. In this embodiment, the first rotating wheel 41 rotates in the opposite direction synchronously, that is, when the first rotating wheel 41 rotates in the clockwise direction, the second rotating wheel 42 rotates in the counterclockwise direction. When the first rotating wheel 41 rotates in the counterclockwise direction, the second rotating wheel 42 rotates in the clockwise direction. The first rotating wheel 41 and the second rotating wheel 42 rotate at the same angular velocity, which is conducive to clamping the first press part 100 and the second press part 200 at the same time. After the second push rod 43 acts on the press seat 300, it is separated from the first press part 100 and the second press part 200 in time.

[0050] After the biomaterial is injected into the gap formed by the assembly of the profiling seat 300 and the first profiling member 100 and the second profiling member 200, the profiling is performed and frozen, and the mold is transported as a whole to the first disassembly station (i.e., the first disassembly mechanism 30), the profiling tube 400 is clamped, and the first ejector 22 simultaneously applies a force to the first profiling member 100 and the second profiling member 200 to remove the profiling tube 400, and the profiling seat 300, the first profiling member 100 and the second profiling member 200 are separated from the profiling tube 400, and then the second conveying mechanism removes the profiling tube 400. The mold with the profiling tube 400 is transported from one end to the second disassembly station (i.e., the second disassembly mechanism 40) at the other end, and the first profiling part 100 and the second profiling part 200 are clamped by the first rotating wheel 41 and the second rotating wheel 42 at the same time, and the second ejector rod 43 extends into the through hole 500 to act on the profiling seat 300, thereby separating the first profiling part 100 and the second profiling part 200 from the profiling seat 300, and the frozen molded blank falls down together with the profiling seat 300 and during the collision process, the profiling blank is separated from the profiling seat 300. The separated blank is freeze-dried to obtain a finished product, which can be used for local antibacterial use.

Claims

1. A method for removing a mold, characterized in that First, the mold is transported to the first dismantling station to remove the profiling tube, and then the profiling seat, the first profiling part and the second profiling part are transported to the second dismantling station, and the ejector rod is extended into the through hole to act on the profiling seat, so that the profiling seat falls downward and during the collision, the profiling blank is separated from the profiling seat; The press-forming seat comprises a main body and a press-forming column, the press-forming column stands on the main body, and extends along the lower end side of the press-forming column toward the main body to form a receiving groove for accommodating biomedical materials; The first press-formed part has a first groove body arranged along its axial direction; The second pressed part has a second groove body arranged along its axial direction; The profiled tube comprises a tube cavity; The profiled column is fitted with the first trough body and the second trough body in a gap, and a through hole is formed at one end. The gap accommodates biomedical materials. The profiled tube clamps the first profiled part, the second profiled part and the profiled seat in the tube cavity.

2. The method for removing the mold according to claim 1, characterized in that At the first disassembly station, while clamping the profiled tube, a force is applied to the first profiled part and the second profiled part to remove the profiled tube. At the second disassembly station, the first profiled part and the second profiled part are clamped, and the push rod is extended into the through hole to act on the profiled seat.

3. The method for removing the mold according to claim 1, characterized in that The first press-formed part is in a semi-cylindrical shape, and the second press-formed part is in a semi-cylindrical shape.

4. The method for removing the mold according to claim 3, characterized in that The press-forming seat, the first press-forming piece and the second press-forming piece are assembled to form a cylinder.

5. A device for removing a mold, characterized in that include frame; A first conveying mechanism, which is arranged on the frame; A first detaching mechanism, comprising a clamping rotating wheel and a first push rod, wherein the first push rod is driven by a first cylinder; a second detachment mechanism, comprising a second ejector rod, the second ejector rod being driven by a second cylinder; A second conveying mechanism is disposed between the first detaching mechanism and the second detaching mechanism, one end of which receives the mold without the corrugated tube output from the first detaching mechanism, conveys it to the other end, and is captured by the second detaching mechanism; The mold comprises: The press-forming seat comprises a main body and a press-forming column, wherein the press-forming column stands on the main body and extends toward the main body along the lower end side of the press-forming column to form a receiving groove for receiving biomedical materials; A first press-formed part, with a first groove body arranged along its axial direction; A second press-formed part, with a second groove body arranged along its axial direction; A profiled tube including a lumen; The profiled column is in gap fit with the first trough body and the second trough body, and a through hole is formed at one end, and the gap accommodates the biomedical material, and the profiled tube clamps the first profiled part, the second profiled part and the profiled seat in the tube cavity; The second detachment mechanism includes a first rotating wheel, a second rotating wheel and a second push rod. The first rotating wheel and the second rotating wheel respectively clamp the mold from which the corrugated tube has been removed. At the same time, the second push rod is driven by the second cylinder to press the mold from which the corrugated tube has been removed from above.

6. The mold removal device according to claim 5, characterized in that The first rotating wheel and the second rotating wheel rotate synchronously and in opposite directions.

7. The mold removal device according to claim 5, characterized in that The first press-formed part is in a semi-cylindrical shape, and the second press-formed part is in a semi-cylindrical shape.

8. The mold removal device according to claim 5, characterized in that The press-forming seat, the first press-forming piece and the second press-forming piece are assembled to form a cylinder.

9. The mold removal device according to claim 5, characterized in that The second detachment mechanism comprises a first rotating wheel and a second rotating wheel, and the first rotating wheel and the second rotating wheel rotate synchronously and in opposite directions to clamp the first pressed part and the second pressed part respectively.

10. The mold removal device according to claim 5, characterized in that The second push rod is driven by the second cylinder to extend into the through hole to act on the pressing seat, so as to separate the first pressing part and the second pressing part from the pressing seat.

11. The mold removal device according to claim 5, characterized in that The first detaching mechanism receives the mold from the first conveying mechanism, and the first cylinder drives the first ejector rod to perform ejection on the first press-formed part and the second press-formed part.

12. The mold removal device according to claim 5, characterized in that A sorting piece is also arranged on the second conveying mechanism, which includes an inlet and an outlet, so that the molds entering from the inlet are output from the outlet one by one and then captured by the second detaching mechanism.

13. The mold removal device according to claim 12, characterized in that With the help of the arranging member, the molds enter the second discharging mechanism one by one, and the molds and the frozen blanks are separated one by one in an orderly manner.

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