CN111086230A - Turnover forming device and forming method of flow guide partition plate - Google Patents
Turnover forming device and forming method of flow guide partition plate Download PDFInfo
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- CN111086230A CN111086230A CN201811230213.8A CN201811230213A CN111086230A CN 111086230 A CN111086230 A CN 111086230A CN 201811230213 A CN201811230213 A CN 201811230213A CN 111086230 A CN111086230 A CN 111086230A
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- flow guide
- positioning portion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
Abstract
The invention relates to a turnover forming device and a forming method of a flow guide partition plate. The turnover forming device comprises a positioning part, at least one end of the positioning part is open, and the interior of the positioning part is hollow; and a force application part; when the workpiece to be turned is sleeved on the positioning portion, the force application portion applies force to one end, located at the opening of the positioning portion, of the workpiece to be turned, and the workpiece to be turned moves to the inside of the positioning portion along with the force application portion and is sleeved on the force application portion. Because the R angle of the flow guide partition plate is positioned in the flow guide partition plate, the forming die is required to be provided with a curved surface matched with the R angle, the curved surface is embedded in the flow guide through hole, so that the flow guide partition plate and the forming die cannot be demoulded normally, the forming of the annular partition plate is completed through the forming die, the R angle is formed between the outer surface of the annular plate body in the annular partition plate and the inner surface of the flow guide through hole, the annular partition plate can be demoulded normally after being formed, then the annular partition plate is overturned by adopting the overturning forming device, and the stress part is cut to.
Description
Technical Field
The invention relates to the technical field of medical instrument products, in particular to a turnover forming device and a forming method of a flow guide partition plate.
Background
The membrane oxygenator is a medical appliance for replacing lungs with cardiac arrest, has the function of regulating the oxygen and carbon dioxide contents in blood, is a necessary medical appliance for cardiovascular surgery, and is also a necessary medical appliance for treating acute respiratory diseases and waiting for lung transplantation. The principle of the membrane oxygenator is that venous blood in a body is led out of the body, oxygen and carbon dioxide are exchanged to be changed into arterial blood after passing through the membrane oxygenator, and the arterial blood is returned to an arterial system of a patient to maintain the supply of oxygenated blood of visceral organs of the human body, so that the pulmonary function is temporarily replaced in the operation process, and meanwhile, a quiet, bloodless and clear operation environment is provided for doctors so as to facilitate the implementation of the operation.
In the membrane oxygenator, a flow guiding partition plate and a silk membrane structure are usually arranged, and the flow direction of blood is guided by the flow guiding partition plate, so that the blood is fully contacted with the silk membrane structure, thereby realizing the exchange of oxygen and carbon dioxide in the blood. In the prior art, as shown in fig. 1, which is a schematic cross-sectional view of a flow guide perforation 32 on a flow guide partition plate 3, the flow guide partition plate 3 has a core body 31 and a plurality of flow guide perforations 32 disposed on the core body 31, and an inner surface of each flow guide perforation 32 is perpendicular to an inner surface of the core body 31. When blood flows in the flow guide partition plate 3, the blood impacts at the joint of the inner surface of the flow guide perforation 32 and the inner surface of the core body 31, and because the inner surface of the flow guide perforation 32 is perpendicular to the inner surface of the core body 31 and forms a right angle, when the blood impacts at the joint of the flow guide perforation 32 and the core body, the stressed area of blood cells in the blood is small, and the blood cells are easily damaged by the right angle, so that the quality of the blood is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a turnover forming device and a forming method of a flow guide partition plate.
According to a first aspect of the present invention, there is provided an inversion molding apparatus comprising:
the positioning part is provided with an opening at least at one end and is hollow inside; and
a force application part;
when the workpiece to be turned is sleeved on the positioning portion, the force application portion applies force to one end, located at the opening of the positioning portion, of the workpiece to be turned, and the workpiece to be turned moves to the inside of the positioning portion along with the force application portion and is sleeved on the force application portion.
According to an embodiment of the present invention, the force application portion includes a grip and a flip; the overturning piece is arranged on the holding piece; when force is applied to one end, located at the opening of the positioning portion, of the workpiece to be turned, the workpiece to be turned moves to the inside of the positioning portion along with the turning piece and is sleeved on the turning piece.
According to an embodiment of the present invention, when one of the two ends of the positioning portion is open, the height of the positioning portion is equal to or greater than the height of the workpiece to be turned; the height of the turnover piece is equal to or greater than that of the workpiece to be turned.
According to one embodiment of the invention, when the two ends of the positioning part are both opened, the height of the positioning part is smaller than, equal to or larger than the height of the workpiece to be turned; the height of the turnover piece is equal to or greater than that of the workpiece to be turned. .
According to an embodiment of the present invention, the outer diameter of the turning member is greater than or equal to the inner diameter of the workpiece to be turned and smaller than the inner diameter of the positioning portion, and the difference between the inner diameter of the positioning portion and the outer diameter of the turning member is at least twice the wall thickness of the workpiece to be turned.
According to an embodiment of the present invention, the outer diameter of the turning member is smaller than or equal to the inner diameter of the workpiece to be turned and smaller than the inner diameter of the positioning portion, and the difference between the inner diameter of the positioning portion and the outer diameter of the turning member is at least twice the wall thickness of the workpiece to be turned.
According to an embodiment of the present invention, the positioning device further includes a base, one end of the positioning portion is disposed on the base, and the other end of the positioning portion is open.
According to a second aspect of the present invention, the present invention provides a method for forming a baffle plate using the above-mentioned roll-over forming apparatus, comprising:
providing an annular partition plate; the annular partition plate comprises an annular plate body and a stress part, wherein one end of the annular plate body is provided with an opening, and the other end of the annular plate body is provided with the stress part;
forming a plurality of flow guide through holes on the annular plate body, wherein the inner surfaces of the flow guide through holes and the outer surface of the annular plate body form an R angle;
the annular plate body is sleeved on the positioning part, so that the stressed part is positioned at one end of the opening of the positioning part;
the force application part applies force to the force application part, and the annular partition plate moves to the inside of the positioning part along with the force application part and is sleeved on the force application part;
drawing the force application part out of the positioning part;
taking out the turned annular partition plate;
and cutting off the stress part to form the flow guide partition plate, wherein the R angle is positioned in the flow guide partition plate.
According to an embodiment of the present invention, the method further comprises: at least one spiral flow guide groove is formed on the outer surface of the annular plate body, and a plurality of flow guide perforated parts are formed in the spiral flow guide groove; when the diversion partition plate is formed, the spiral diversion groove is positioned on the inner surface of the diversion partition plate.
According to an embodiment of the present invention, the method further comprises: at least one spiral diversion groove is formed on the inner surface of the annular plate body, and a plurality of diversion through holes are formed in the spiral diversion grooves respectively; when the diversion partition plate is formed, the spiral diversion groove is positioned on the outer surface of the diversion partition plate.
Compared with the prior art, the invention can obtain the following technical effects: according to the flow guide partition plate, the inner surface of each flow guide perforation is formed with the R angle with the inner surface of the core body, when blood flows in the flow guide partition plate, the blood impacts the R angle formed by the connection of the inner surface of each flow guide perforation and the inner surface of the core body, the R angle buffers the flow speed of the blood, the contact area of blood cells in the blood and the R angle is increased, and the blood flows softly along the cambered surface of the R angle and cannot be damaged by the R angle. Meanwhile, because the flow guide partition plate is directly formed, the R angle is positioned inside the flow guide partition plate, a forming die is required to be provided with a curved surface matched with the R angle, the curved surface is embedded into the flow guide through hole, and thus the flow guide partition plate and the forming die cannot be demoulded normally.
Drawings
FIG. 1 is a schematic cross-sectional view of a flow guide hole of a baffle plate in the prior art;
FIG. 2 is a schematic structural diagram of an inversion molding apparatus according to an embodiment of the present invention;
fig. 3 is a schematic view of the positioning portion, the workpiece to be turned over, and the inner and outer diameters of the turning piece when the turned workpiece to be turned over moves out of the positioning portion along with the turning piece at the same time according to the embodiment of the invention;
FIG. 4 is another structural diagram of an inversion molding apparatus according to an embodiment of the present invention;
fig. 5 is a schematic view of the positioning portion, the workpiece to be turned, and the inner and outer diameters of the turned part when the turned workpiece to be turned is located in the positioning portion according to the first embodiment of the present invention;
fig. 6 is a schematic view of the positioning portion, the workpiece to be turned, and the inner and outer diameters of the turning piece when the workpiece to be turned is freely positioned in the positioning portion according to the first embodiment of the present invention;
FIG. 7 is a schematic structural view of a second baffle plate according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a second fluid passage hole according to an embodiment of the present invention;
FIG. 9 is a flow chart of a second embodiment of the present invention;
FIG. 10 is a schematic sectional view of a drilled hole of a second drilling mold according to an embodiment of the present invention;
FIG. 11 is a diagram illustrating the configuration of an annular partition before being flipped over in accordance with an embodiment of the present invention;
FIG. 12 is a schematic diagram illustrating an inversion process of the annular partition according to an embodiment of the present invention;
FIG. 13 is a diagram illustrating the configuration of the annular partition after the annular partition has been flipped over in accordance with an embodiment of the present invention;
FIG. 14 is a schematic cross-sectional view of a third baffle of an embodiment of the present invention;
fig. 15 is a schematic structural view of a three-ring plate body according to an embodiment of the present invention;
FIG. 16 is a schematic structural view of a third baffle plate according to an embodiment of the present invention;
fig. 17 is a schematic cross-sectional view of a three-ring plate according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
The terms "first," "second," and the like, as used herein, are not intended to be limited to the specific order or sequence presented, nor are they intended to be limiting, but rather are intended to distinguish one element from another or from another element or operation described by the same technical term.
Example one
As shown in fig. 2, this is a structural view of the inversion molding apparatus 1 of the present embodiment. As shown in the drawing, the inversion molding apparatus 1 includes a positioning portion 11 and an urging portion 12. The positioning part 1 is used for sleeving the workpiece 2 to be turned over, positioning the workpiece 2 to be turned over, and making the workpiece 2 to be turned over by certain elastic materials such as soft silica gel. The force application part 12 is used for applying a force to the workpiece 2 to be turned, and under the cooperation of the positioning part 11, the workpiece 2 to be turned is turned inside and outside, that is, the inner surface of the workpiece 2 to be turned is changed into an outer surface, and the outer surface of the workpiece 2 to be turned is changed into an inner surface. As shown in fig. 2, the positioning portion 11 has a first end 111 and a second end 112 opposite to each other, at least one of the first end 111 and the second end 112 has an opening 113, and the positioning portion 11 is hollow. The urging portion 12 is movable inside the positioning portion 11. When the workpiece 2 to be turned is sleeved on the outer surface of the positioning portion 11 and a force is applied to the force application portion 12, the force application portion 12 applies a force on one end of the workpiece 2 to be turned, which is located at the opening 113 of the positioning portion 11, the workpiece 2 to be turned moves to the inside of the positioning portion 11 along with the force application portion 12 under the action of the force, and the workpiece 2 to be turned is finally sleeved on the force application portion 12, and the force application portion 12 is taken out from the positioning portion 11. The reversed workpiece 2 to be reversed can be moved out of the positioning part 11 along with the force application part 12, or can be positioned in the positioning part 11, the force application part 12 is taken out firstly, and then the reversed workpiece 2 to be reversed is taken out of the positioning part 11.
Referring to fig. 2, the force application portion 12 includes a grip 121 and a flip member 122. One end of the turning member 122 is connected to the holding member 121, and the other end applies a force to the workpiece 2 to be turned. In order to save more labor when applying force to the turning piece 122, the turning piece 122 is vertically disposed on the holding piece 121. When the force is applied to the force application portion 12 by an external person, the hand holds the holding member 121 to apply a force, the other end of the turnover member 122 applies a force to one end of the workpiece 2 to be turned, which is located at the opening 113 of the positioning portion 11, in the process of applying the force, the workpiece 2 to be turned continuously moves towards the inside of the positioning portion 11 along with the movement of the turnover member 122 until the workpiece 2 to be turned moves to the other end of the positioning portion 11, which is opposite to the opening 113, and finally, the workpiece 2 to be turned is sleeved on the outer surface of the turnover.
The first end 111 and the second end 112 of the positioning portion 11 may have one opening 113, or both ends of the positioning portion may have openings 113. As shown in fig. 2, when one of the first end 111 and the second end 112 of the positioning portion 11 is opened 113, the reverse molding tool 1 further includes a base 13, the first end 111 of the positioning portion 11 is disposed on the base 13, the second end 112 of the positioning portion 11 is opened 113, or the second end 112 of the positioning portion 11 is disposed on the base 13, and the first end 111 of the positioning portion 11 is opened 113. The base 13 is used to support the positioning portion 11. In this case, the height of the positioning portion 11 is preferably equal to or greater than the height of the workpiece 2 to be turned, before turning is started, so that the workpiece 2 to be turned can be entirely sleeved on the outer surface of the positioning portion 11, the height of the turning member 122 is preferably equal to or greater than the height of the workpiece 2 to be turned, and after turning is completed, the workpiece 2 to be turned after turning is entirely sleeved on the outer surface of the turning member 122. After the turning is completed, the turning member 122 is drawn out, and the turned workpiece 2 to be turned is moved out of the inside of the positioning portion 11 simultaneously with the turning member 122. As shown in fig. 3, it is a schematic view of the relationship between the inner diameter and the outer diameter of the positioning portion 11, the workpiece 2 to be turned, and the turning piece 122 when the turned workpiece 2 to be turned is moved out of the positioning portion 11 along with the turning piece 122. To ensure that the flipper 122 moves within the nest 11, the inner diameter D2 of the nest 11 is greater than the outer diameter D5 of the flipper 122 by at least twice the wall thickness of the workpiece 2 to be flipped. When the workpiece 2 to be turned over after turning over is just sleeved on the outer surface of the turning piece 122, that is, the workpiece 2 to be turned over is in a free state and is not stretched by the turning piece 122 along the radial direction thereof, before turning over is started, the workpiece 2 to be turned over is sleeved on the outer surface of the positioning portion 11 along the radial direction thereof, the outer diameter D5 of the turning piece 122 is equal to the inner diameter D4 of the workpiece 2 to be turned over, and the outer diameter D3 of the workpiece 2 to be turned over is smaller than or equal to the inner diameter D2 of the positioning portion 11. When the reversed workpiece 2 to be reversed is sleeved on the outer surface of the reversing piece 122 in a stretching state along the radial direction, before the reversal, the workpiece 2 to be reversed is sleeved on the outer surface of the positioning portion 11 in a stretching manner along the radial direction, the outer diameter D5 of the reversing piece 122 is larger than the inner diameter D4 of the workpiece 2 to be reversed, and the outer diameter D3 of the workpiece 2 to be reversed is smaller than or equal to the inner diameter D2 of the positioning portion 11.
Please refer to fig. 4, which is a structural diagram of the turnover forming apparatus 1 of the present embodiment. In this embodiment, the first end 111 and the second end 112 of the positioning portion 11 both have openings 113, the reverse forming tool 1 further includes a base 13, the base 13 is provided with an opening, the first end 111 of the positioning portion 11 is provided on the base 13, the opening 113 of the first end 111 of the positioning portion 11 is communicated with the opening on the base 13, or the second end 112 of the positioning portion 11 is provided on the base 13, and the opening 113 of the second end 112 of the positioning portion 11 is communicated with the opening on the base 13. The base 13 is used to support the positioning portion 11. When the base 13 is not disposed on the reverse forming tool 1, the workpiece 2 to be reversed can move along the first end 111 to the second end 112 of the positioning portion 11 and be sleeved on the outer surface of the positioning portion 11, or move along the second end 112 to the first end 111 of the positioning portion 11 and be sleeved on the outer surface of the positioning portion 11. When the roll-over forming device 1 includes the base 13, the workpiece 2 to be rolled over moves along one end of the positioning portion 11 to the other end provided with the base 13 and is sleeved on the outer surface of the positioning portion 11. The height of the positioning portion 11 is smaller than, equal to, or greater than the height of the workpiece 2 to be turned, that is, the height of the positioning portion 11 and the height of the workpiece 2 to be turned are not particularly limited, and it is only required that the height of the turning piece 122 is equal to or greater than the height of the workpiece 2 to be turned. After the overturning is completed, the overturning part 122 can be drawn out from the first end 111 or the second end 112, the overturned workpiece 2 to be overturned can be moved out of the positioning part 11 along with the overturning part 122, and can also be positioned inside the positioning part 11, then the overturning part 122 is drawn out, then the overturned workpiece 2 to be overturned is taken out from the positioning part 11, or the force is continuously applied unchanged after the overturning is completed, the overturned workpiece 2 to be overturned is ejected out from the first end 111 or the second end 1122 by the overturning part 122 in the direction of the force, the part of the overturning part 122 close to the holding part 121 is positioned in the positioning part 11, then the overturned workpiece 2 to be overturned is taken down from the overturning part 122, and then the overturning part 122 is moved out from the positioning part 11.
When the reversed workpiece 2 to be reversed is moved out of the positioning portion 11 along with the reversing piece 122, the dimensions of the positioning portion 11, the workpiece 2 to be reversed, and the reversing piece 122 are the same as those shown in fig. 3, and are not described herein again.
Please refer to fig. 5, which is a schematic diagram illustrating the relationship between the inner diameter and the outer diameter of the positioning portion 11, the workpiece 2 to be turned, and the turning member 122 when the workpiece 2 to be turned is located in the positioning portion 11. When the reversed workpiece 2 to be reversed is placed in the positioning part 11, in order to ensure that the reversing piece 122 moves in the positioning part 11, the inner diameter D2 of the positioning part 11, the outer diameter D5 of the reversing piece 122 is smaller than the inner diameter D2 of the positioning part 11 of the outer diameter D5 of the reversing piece 122, and the difference between the two is at least two times of the wall thickness of the workpiece 2 to be reversed. When the reversed workpiece 2 to be reversed is just attached to the inner wall of the positioning part 11, that is, the workpiece 2 to be reversed is not compressed by the positioning part 11 in the radial direction thereof or the positioned part 11 is compressed in the radial direction thereof, the outer diameter D5 of the reversing piece 2 is equal to or smaller than the inner diameter D4 of the workpiece 2 to be reversed, and the inner diameter D2 of the positioning part 11 is greater than or equal to the outer diameter D3 of the workpiece 2 to be reversed. When the reversed workpiece 2 to be reversed is attached to the inner surface of the positioning part 11 in a compressed state along the radial direction, the outer diameter D5 of the reversing piece 122 is equal to or smaller than the inner diameter D4 of the workpiece 2 to be reversed, and the inner diameter D2 of the positioning part 11 is smaller than the outer diameter D3 of the workpiece 2 to be reversed.
When the reversed workpiece 2 to be reversed is completely ejected out from the first end 111 or the second end 112 by the reversing element 122 along the direction of the force, as shown in fig. 3, the reversed workpiece 2 to be reversed can be exactly sleeved on the outer surface of the reversing element 122 or the reversed workpiece 2 to be reversed is sleeved on the outer surface of the reversing element 122 in a stretching state along the radial direction thereof, at this time, the inner and outer diameter dimensions of the positioning portion 11, the workpiece 2 to be reversed, and the reversing element 122 can be the same as those shown in fig. 3, and detailed description is omitted here. Alternatively, as shown in fig. 5, the reversed workpiece 2 to be reversed is just attached to the inner wall of the positioning portion 11 or the reversed workpiece 2 to be reversed is attached to the inner surface of the positioning portion 11 in a compressed state along the radial direction, at this time, the inner and outer diameter dimensions of the positioning portion 11, the workpiece 2 to be reversed, and the reversing piece 122 may be the same as those shown in fig. 5, and will not be described in detail here. Or, as shown in fig. 6, the reversed workpiece 2 to be reversed is located in the positioning portion 11 in a free state, that is, the outer surface of the reversed workpiece 2 to be reversed and the inner surface of the positioning portion 11, and the inner surface of the reversed workpiece 2 and the outer surface of the reversing piece 122 are both in a non-contact state, at this time, the outer diameter D5 of the reversing piece 122 is smaller than the inner diameter D4 of the workpiece 2 to be reversed, and the outer diameter D3 of the workpiece 2 to be reversed is smaller than the inner diameter D2 of the positioning portion 11.
In this embodiment, the turnover forming device 1 realizes the specific turnover process as follows, the workpiece 2 to be turned is sleeved on the outer surface of the positioning portion 11, the holding part 121 is held to apply force, the direction of the force is the same as the direction of the central axis of the positioning portion 11, the turnover part 122 abuts against the part of the workpiece 2 to be turned, which is located at one end of the opening 113 of the positioning portion 11, and continuously moves towards the inside of the positioning portion 11 along the direction of the force, the part of the workpiece 2 to be turned, which is located at one end of the opening 113 of the positioning portion 11, drives the rest part of the workpiece 2 to be turned to move into the inside of the positioning portion 11, the turnover is finally completed, the outer surface of the workpiece 2 to be turned is changed into an inner surface, the inner surface of the workpiece 2 to be turned is changed into an outer surface. Or the reversed workpiece 2 to be reversed is positioned in the positioning part 11, the force application part 12 is taken out firstly, and then the reversed workpiece 2 to be reversed is taken out from the positioning part 11.
In summary, in this embodiment, for the elastic formed workpiece which is difficult to be demolded due to the inner surface structure, the forming and demolding of the workpiece to be turned can be completed first, and then the workpiece to be turned is turned by the turning forming device, so as to complete the final forming of the formed workpiece.
Example two
The present embodiment provides a method for forming a baffle plate 3. For more detailed and clear description of the method for forming the baffle plate 3 in the present embodiment, the present embodiment separately introduces the structure of the baffle plate 3 and the drilling mold 4 for forming the baffle perforations 32.
Fig. 7 and 8 are a schematic structural diagram of the baffle plate 3 and a cross-sectional structural diagram of the flow guide through hole 32 in the present embodiment, respectively. As shown in the drawings, the present embodiment provides a baffle 3, and the baffle 3 is used in a membrane oxygenator, that is, the membrane oxygenator includes the baffle 3 provided in the present embodiment. The baffle plate 3 includes a core body 31, a plurality of flow guide through holes 32 are formed through the core body 31, wherein an R angle 33 is formed between at least a part of the flow guide through holes 32 or an inner surface of each flow guide through hole 32 in the plurality of flow guide through holes 32 and an inner surface of the core body 31, that is, the inner surface of the flow guide through hole 32 and the inner surface of the core body 31 are connected through a section of convex arc surface, and the radius of the cross section of the arc surface is R. Referring to fig. 9, fig. 10, fig. 11, fig. 12 and fig. 13, which are a flow chart of a manufacturing process of the baffle plate 3, a schematic sectional view of a drilled hole of the drilling mold 4, a schematic view of a structure diagram of the annular baffle plate 34 before the annular baffle plate 34 starts to turn over, a schematic view of a turning process of the annular baffle plate 34, and a structure diagram of the annular baffle plate 34 after the annular baffle plate 34 is turned over in the present embodiment, respectively, the manufacturing process of the baffle plate 3 in the present embodiment is as follows, first providing an annular baffle plate 34, where the annular; the annular plate 341 has an opening 113 at one end and a force-receiving portion 342, such as a hemispherical force-receiving portion 342, at the other end, and is sealed at one end of the annular plate 341. Next, a plurality of flow guiding through holes 32 are formed in the annular plate 341, and an R-angle 33 is formed between an inner surface of the flow guiding through hole 32 and an outer surface of the annular plate 341, that is, the inner surface of the flow guiding through hole 32 and the outer surface of the annular plate 341 are connected by a section of convex arc surface, and a radius of a cross section of the arc surface is R. In this embodiment, the plurality of flow guide perforations 32 may be formed by drilling with the drilling die 4. When the plurality of guide through holes 32 are formed by drilling through the drilling die 4, the drilling die 4 of the present embodiment includes a cylinder 41, the circumferential wall surface of the cylinder 41 has a section of curved surface 42, the curved surface 42 is matched with an R angle 33 formed by the inner surface of the guide through hole 32 and the outer surface of the annular plate 341, according to the shape of the R angle 33, one end of the drilling die 4 is placed on the outer surface of the annular plate 341, an external force is applied to the drilling die 4, the drilling die 4 gradually enters the annular plate 341, the guide through hole 32 is formed on the annular plate 341, the inner surface of the guide through hole 32 and the outer surface of the annular plate 341 form the R angle 33, and the drilling die 4 is pulled out after drilling is completed. Then, the annular plate 341 is sleeved on the outer surface of the positioning portion 11, so that the force-receiving portion 342 is located at the end of the positioning portion 11, where the opening 113 is located; then, the force is applied to the force application portion 12 from the outside, the force application portion 12 applies a force to the force receiving portion 342, so as to facilitate the turnover, during the turnover process, the force receiving portion 342 drives the annular plate 341 to move from the outside to the inside along the central axis thereof under the action of the force applied from the outside, the annular partition 34 moves to the inside of the positioning portion 11 along with the force application portion 12 and is sleeved on the force application portion 12, the outer surface of the force receiving portion 342 changes to the inner surface thereof, the inner surface of the force receiving portion 342 changes to the outer surface thereof, the outer surface of the annular plate 341 changes to the inner surface thereof, the inner surface of the annular plate 341 changes to the outer surface thereof, the turnover is completed, the force application portion 12 is drawn out of the positioning portion 11, the reversed annular plate 341 and the force receiving portion 342 can be moved out of the positioning portion 11 along with the force application portion 12 and can also be located in the positioning portion 11, when the reversed annular plate 341 and the force receiving portion 342, the stress part 11 is cut off to form the flow guide partition plate 3, and the R angle 33 is positioned inside the flow guide partition plate 3, namely the inner surface of the flow guide partition plate 3 and the inner surface of the flow guide perforation 32 form the R angle 33. When blood flows in the flow guide partition plate 3, the blood impacts the R angle 33 where the inner surface of the flow guide perforation 32 and the inner surface of the core body 31 are connected, the contact area between blood cells in the blood and the R angle 33 is increased, the blood flows through the arc surface of the R angle 33 softly and cannot be damaged by the R angle 33, and the quality of the blood is further ensured.
EXAMPLE III
The difference between this embodiment and the second embodiment is that at least one spiral flow guide groove 35 is provided on the baffle plate 3 of this embodiment. At least one spiral guide groove 35 is provided on the inner surface of the baffle plate 3 or the outer surface of the baffle plate 3.
The present embodiment provides the baffle plate 3 in one of the structures when at least one spiral guide groove 35 is provided on the inner surface of the baffle plate 3. Referring to fig. 14 and fig. 8 and 11 again, fig. 14 is a schematic cross-sectional view of the baffle plate 3 of the present embodiment, as shown in the figure, the baffle plate 3 includes a core body 31 and at least one spiral baffle groove 35, the at least one spiral baffle groove 35 is disposed on an inner surface of the core body 31, a plurality of baffle through holes 32 are disposed on the core body 31, a portion of the plurality of baffle through holes 32 is disposed in the spiral baffle groove 35, and an R angle 33 is formed between the inner surface of the baffle through hole 32 and the inner surface of the core body 31. The manufacturing process of the baffle plate 3 of this embodiment is different from the manufacturing process of the baffle plate 3 of the second embodiment in that after the annular baffle plate 34 is provided, at least one spiral baffle groove 35 is formed on the outer surface of the annular plate body 341. Referring to fig. 7 and fig. 15, fig. 15 is a schematic structural diagram of the annular plate body 341 in the present embodiment, after the annular plate body 341 is provided, at least one spiral flow guide groove 35 is further formed on the outer surface of the annular plate body 341, then a plurality of flow guide through holes 32 are formed on the annular plate body 341, at least a part of the plurality of flow guide through holes 32 is formed in the spiral flow guide groove 35, then the annular plate body 341 and the stress portion 342 are turned over, the stress portion 342 is cut off, the flow guide partition plate 3 is formed, and after the turning over is completed, at least one spiral flow guide groove 35 is located on the inner surface of the flow guide.
Alternatively, when at least one spiral guide groove 35 is provided on the outer surface of the baffle plate 3, the present embodiment provides another structure of the baffle plate 3. The present embodiment provides an alternative construction of the baffle 3. Referring to fig. 16 and fig. 8 again, fig. 16 is a schematic structural view of the baffle plate 3 of the present embodiment, as shown, the baffle plate 3 includes a core body 31 and at least one spiral baffle groove 35, the at least one spiral baffle groove 35 is disposed on an outer surface of the core body 31, a plurality of baffle through holes 32 are disposed on the core body 31, a portion of the plurality of baffle through holes 32 is disposed in the spiral baffle groove 35, and an R angle 33 is formed between an inner surface of the baffle through hole 32 and an inner surface of the core body 31. The manufacturing process of the baffle plate 3 of this embodiment is different from the manufacturing process of the baffle plate 3 of the first embodiment in that after the annular baffle plate 34 is provided, at least one spiral baffle groove 35 is formed on the inner surface of the annular plate body 341. Referring to fig. 7 and 17, fig. 17 is a schematic cross-sectional view of the annular plate body 341 in the present embodiment, after the annular partition plate 34 is provided, at least one spiral flow guide groove 35 is formed on the inner surface of the annular plate body 341, then a plurality of flow guide through holes 32 are formed on the annular plate body 341, at least a part of the plurality of flow guide through holes 32 is formed in the spiral flow guide groove 35, then the annular plate body 341 and the stress portion 342 are turned over, the stress portion 342 is cut off, the flow guide partition plate 3 is formed, and after the turning over is completed, at least one spiral flow guide groove 35 is located on the outer surface of the flow guide partition. When the baffle 3 is installed in the membrane oxygenator, the silk membrane structure is wrapped on the outer surface of the baffle 3, and the at least one spiral diversion groove 35 is located between the silk membrane structure and the outer surface of the baffle 3.
To sum up, in the first aspect of the present invention, the baffle plate has a plurality of flow guide perforations, and an R-angle is formed between the inner surface of each flow guide perforation and the inner surface of the baffle plate, so that when blood flows in the baffle plate, the blood is buffered at the R-angle, and flows softly over the arc surface of the R-angle, and blood cells in the blood are not damaged. In the second aspect, because the flow guide partition plate is directly formed, the R angle is positioned in the flow guide partition plate, a forming die which is adapted to the adopted flow guide partition plate must be provided with a curved surface matched with the R angle, the curved surface is embedded into the flow guide through hole after forming, and the flow guide partition plate and the forming die cannot be normally demolded, so that the forming of the annular partition plate is completed firstly, and the R angle is formed between the outer surface of the annular plate body in the annular partition plate and the inner surface of the flow guide through hole.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An inversion molding apparatus, comprising:
the positioning part is provided with an opening at least at one end and is hollow inside; and
a force application part;
when the workpiece to be turned is sleeved on the positioning portion, the force application portion applies force to one end, located at the opening of the positioning portion, of the workpiece to be turned, and the workpiece to be turned moves to the inside of the positioning portion along with the force application portion and is sleeved on the force application portion.
2. The roll-over molding apparatus according to claim 1, wherein the force application portion comprises a grip member and a roll-over member; the overturning piece is arranged on the holding piece; when force is applied to one end, located at the opening of the positioning portion, of the workpiece to be turned, the workpiece to be turned moves to the inside of the positioning portion along with the turning piece and is sleeved on the turning piece.
3. The roll-over forming device according to claim 2, wherein when one of the two ends of the positioning portion is open, the height of the positioning portion is equal to or greater than the height of the workpiece to be turned over; the height of the turnover piece is equal to or larger than that of the workpiece to be turned.
4. The turnover forming device of claim 2, wherein when both ends of the positioning portion are open, the height of the positioning portion is smaller than, equal to or larger than the height of the workpiece to be turned; the height of the turnover piece is equal to or larger than that of the workpiece to be turned.
5. The roll-over forming device according to claim 3, wherein the outer diameter of the roll-over member is greater than or equal to the inner diameter of the workpiece to be rolled over and smaller than the inner diameter of the positioning portion, and the difference between the inner diameter of the positioning portion and the outer diameter of the roll-over member is at least twice as large as the wall thickness of the workpiece to be rolled over.
6. The roll-over forming device according to claim 4, wherein the outer diameter of the roll-over member is smaller than or equal to the inner diameter of the workpiece to be rolled over and smaller than the inner diameter of the positioning portion, and the difference between the inner diameter of the positioning portion and the outer diameter of the roll-over member is at least twice as large as the wall thickness of the workpiece to be rolled over.
7. The roll-over forming device according to any one of claims 1 to 6, further comprising a base, wherein one end of the positioning portion is disposed on the base, and the other end of the positioning portion is open.
8. A method for forming a baffle plate using the roll-over forming apparatus as claimed in any one of claims 1 to 7, comprising:
providing an annular partition plate; the annular partition plate comprises an annular plate body and a stress part, one end of the annular plate body is provided with an opening, and the other end of the annular plate body is provided with the stress part;
forming a plurality of flow guide through holes on the annular plate body, wherein the inner surfaces of the flow guide through holes and the outer surface of the annular plate body form an R angle;
the annular plate body is sleeved on the positioning part, so that the stressed part is positioned at one end of the opening of the positioning part;
the annular partition plate moves to the inside of the positioning part along with the force application part and is sleeved on the force application part;
drawing the force application part out of the positioning part;
taking out the turned annular partition plate;
and cutting off the stress part to form the flow guide partition plate, wherein the R angle is positioned in the flow guide partition plate.
9. The method of forming a baffle plate of claim 8, further comprising: at least one spiral flow guide groove is formed on the outer surface of the annular plate body, and the flow guide perforated parts are formed in the spiral flow guide groove; when the flow guide partition plate is formed, the spiral flow guide groove is positioned on the inner surface of the flow guide partition plate.
10. The method of forming a baffle plate of claim 8, further comprising: at least one spiral flow guide groove is formed on the inner surface of the annular plate body, and the plurality of flow guide through holes are formed in the plurality of spiral flow guide grooves respectively; when the flow guide partition plate is formed, the spiral flow guide groove is positioned on the outer surface of the flow guide partition plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230213.8A CN111086230B (en) | 2018-10-22 | 2018-10-22 | Turnover forming device and forming method of flow guide partition plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811230213.8A CN111086230B (en) | 2018-10-22 | 2018-10-22 | Turnover forming device and forming method of flow guide partition plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111086230A true CN111086230A (en) | 2020-05-01 |
| CN111086230B CN111086230B (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811230213.8A Active CN111086230B (en) | 2018-10-22 | 2018-10-22 | Turnover forming device and forming method of flow guide partition plate |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4863441A (en) * | 1987-07-17 | 1989-09-05 | Minnesota Mining And Manufacturing Company | Venous return catheter |
| CN106757433A (en) * | 2017-01-15 | 2017-05-31 | 安阳市三水科技有限公司 | A kind of preparation method of woven-jacket hose |
| CN206956409U (en) * | 2017-06-29 | 2018-02-02 | 鲁泰纺织股份有限公司 | Clothes turn over loop device |
-
2018
- 2018-10-22 CN CN201811230213.8A patent/CN111086230B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4863441A (en) * | 1987-07-17 | 1989-09-05 | Minnesota Mining And Manufacturing Company | Venous return catheter |
| CN106757433A (en) * | 2017-01-15 | 2017-05-31 | 安阳市三水科技有限公司 | A kind of preparation method of woven-jacket hose |
| CN206956409U (en) * | 2017-06-29 | 2018-02-02 | 鲁泰纺织股份有限公司 | Clothes turn over loop device |
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| Publication number | Publication date |
|---|---|
| CN111086230B (en) | 2022-04-15 |
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