Double-cavity guide pipe injection mold

Abstract

The utility model discloses a double-cavity guide pipe injection mold, which comprises an upper mold, a lower mold, a first molding mechanism and a second molding mechanism, the upper mold is provided with a first molding area, the lower mold is provided with a second molding area and a groove for placing an embedded pipe body, the first molding mechanism comprises a first mold body, and the first mold body is rotatably arranged on the lower mold; the first forming mechanism comprises a first mold body and a third mold body, the first mold body is used for forming an arc-shaped hole body of the double-cavity catheter, the second forming mechanism comprises a second mold body and a third mold body, the first mold body is used for forming a linear hole body of the double-cavity catheter, and the second mold body is used for forming an inclined hole body of the double-cavity catheter. The embedded pipe body is arranged through the groove, the arc-shaped pipe body is formed through the first mold body with the rotating function, the linear hole body is formed through the second mold body with the linear motion function, the oblique hole body is formed through the third mold body with the oblique linear motion function, and the pipe body is separated from the corresponding hole body in the demolding process. Therefore, interference with the demolding process of the double-cavity catheter is avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a double-lumen conduit injection mold. Background Technology

[0002] Double-lumen catheters are components of medical devices and have multiple functions in the medical field. Depending on their application site, they are mainly divided into double-lumen endotracheal catheters and double-lumen urinary catheters. Double-lumen endotracheal catheters are mainly used to separate the two lungs, enabling separate ventilation and suction of both lungs. Double-lumen urinary catheters are mainly used for draining urine, administering medication to the bladder, injecting air, and injecting water.

[0003] like Figure 1 As shown, this is a newly designed double-lumen catheter with a Y-shaped main body. One end has one port, and the other end has two ports. One side of the ports has a straight connecting structure, while the other side has an arc-shaped connecting structure. There is also an oblique orifice between the two ports. During manufacturing, a tube needs to be pre-embedded within the straight orifice. For this double-lumen catheter, an injection mold needs to be developed. Utility Model Content

[0004] This application provides a double-lumen conduit injection mold to realize the molding and demolding functions of a double-lumen conduit for pre-embedded pipes.

[0005] This application provides a dual-lumen catheter injection mold, comprising:

[0006] The upper mold has a first forming area;

[0007] The lower mold is slidably disposed on one side of the upper mold. The lower mold has a second forming area and a groove. The second forming area is connected to the groove. The groove is used to place the pre-embedded pipe body. The second forming area and the first forming area are used together to form the forming cavity of the double-lumen conduit.

[0008] The first forming mechanism includes: a first driving component and a first mold body. The first mold body is rotatably disposed on the lower mold and connected to the first driving component. The first mold body is used to form the arc-shaped hole of the double-lumen conduit.

[0009] The second forming mechanism includes: a second driving component, a second mold body, and a third mold body. The second mold body and the third mold body are respectively connected to the second driving component. The first mold body is used to form a straight hole in the double-lumen conduit, and the second mold body is used to form an oblique hole in the double-lumen conduit.

[0010] The beneficial effects of the above embodiments are as follows: by configuring grooves, the tube body to be pre-embedded is placed into the molding cavity, and the first mold body with rotation function forms an arc-shaped tube body, the second mold body with linear motion function forms a linear hole body, and the third mold body with oblique linear motion function forms an oblique hole body. During the demolding process, it is released from the corresponding hole body, thereby avoiding interference with the demolding process of the double-lumen conduit, thus realizing the molding and demolding of the double-lumen conduit with pre-embedded tube body.

[0011] Based on the above embodiments, the embodiments of this application can be further improved as follows:

[0012] In one embodiment of this application: the first driving assembly includes: a first driving member and a lever, the first driving member and the lever are respectively hinged to the lower mold, and the first mold body and the first driving member are respectively connected to the lever. The beneficial effect of this step is that the rotational movement of the first mold is achieved through the cooperation of the lever and the first driving member.

[0013] In one embodiment of this application: the second driving component includes: a second driving member, a first slider, and a second slider. The second driving member is connected to the lower mold. The first slider is slidably disposed on the lower mold along a straight line. The second slider is slidably disposed on the first slider. The second slider is also slidably disposed on the lower mold along a straight line direction that forms an angle with the sliding direction of the first slider. The third mold body is connected to the second slider. The beneficial effect of this step is that by configuring a second slider that can slide within the first slider, the function of the second driving member synchronously driving the second mold body and the third mold body to move simultaneously along different straight lines is achieved.

[0014] In one embodiment of this application, the system further includes: an upper end plate, a first positioning member, and a second positioning member. The upper end plate is slidably disposed on one side of the upper mold along the mold opening direction. The upper mold and the lower mold are connected by a mold clamping device. The first positioning member and the second positioning member are respectively connected to the upper end plate. The first positioning member is inserted into the first driving assembly and positions the first mold body. The second positioning member is inserted into the second driving assembly and positions the second mold body and the third mold body. The beneficial effect of this step is to improve the positioning stability of the first mold body, the second mold body, and the third mold body during injection molding.

[0015] In one embodiment of this application, the device further includes a lower end plate and an ejector mechanism. The lower end plate is connected to the lower mold, and the ejector mechanism is disposed between the lower end plate and the lower mold. The ejector mechanism has an ejector end that can extend into the molding cavity. The beneficial effect of this step is that the ejector mechanism enables the demolding of the double-cavity conduit. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 A schematic diagram of a double-lumen conduit with a pre-embedded pipe body;

[0018] Figure 2 This is a schematic diagram of the first structure of a double-lumen catheter injection mold;

[0019] Figure 3 This is a schematic diagram of the second structure of a double-lumen catheter injection mold;

[0020] Figure 4 This is a schematic diagram of the first part of the injection mold structure;

[0021] Figure 5 This is a schematic diagram of the second part of the injection mold.

[0022] Figure 6 This is a schematic diagram of the third part of the injection mold.

[0023] Figure 7 This is a partial structural diagram of the upper mold core and upper forming block;

[0024] Figure 8 This is a partial structural diagram of the lower mold core and lower forming block;

[0025] Figure 9 This is a schematic diagram of the mold viewed from above on the upper end plate;

[0026] Figure 10 for Figure 9 A sectional view along the middle AA;

[0027] Figure 11 for Figure 9 A sectional view along the middle edge BB;

[0028] Figure 12 This is a schematic diagram of the mold viewed from above on the lower end plate.

[0029] Figure 13 for Figure 12 A sectional view along the center CC;

[0030] Figure 14 This is a partial structural diagram of the top material feeding mechanism.

[0031] Among them, 1 is the upper mold, 101 is the first forming area, 102 is the upper mold body, 103 is the upper mold core, 104 is the limiting groove, and 105 is the upper forming block;

[0032] 2 Lower mold, 201 Second forming area, 202 Groove, 203 Lower mold body, 204 Lower mold core, 205 Bracket, 206 Limiting block, 207 Lower forming block, 208 First slide, 209 Third slide;

[0033] 3 First forming mechanism, 301 First mold body, 302 First driving component, 303 Pulley block;

[0034] 4 Second forming mechanism, 401 Second mold body, 402 Third mold body, 403 Second driving component, 404 First slider, 405 Second slider, 406 Second slide rail;

[0035] 5 Upper end plate, 6 First positioning component, 7 Second positioning component, 8 First guide post, 9 First elastic component, 10 Injection tube, 11 Lower end plate;

[0036] 12. Ejector mechanism, 1201. First plate, 1202. Second plate, 1203. Second guide post, 1204. Ejector rod, 1205. Third guide post, 1206. Second elastic element;

[0037] 13 upright boards. Detailed Implementation

[0038] In this application, unless otherwise expressly specified and limited, the terms used should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. If electrical or electronic equipment is involved, it can also refer to an electrical connection or a communication signal connection, etc. For those skilled in the art, the specific meaning of different terms in this utility model can be understood according to the specific circumstances, and the scope of the specific meaning should be limited to achieving the function of this application.

[0039] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0040] like Figure 2 , 4As shown in Figures 6, 7, and 8, a double-lumen conduit injection mold includes: an upper mold 1, a lower mold 2, a first molding mechanism 3, and a second molding mechanism 4. The upper mold 1 has a first molding area 101. The lower mold 2 is slidably disposed on one side of the upper mold 1. The lower mold 2 has a second molding area 201 and a groove 202. The second molding area 201 communicates with the groove 202. The groove 202 is used to place a pre-embedded tube body. The second molding area 201 and the first molding area 101 are used to jointly form the molding cavity of the double-lumen conduit. The first molding mechanism 3 includes: a first drive... The first mold body 301 is rotatably mounted on the lower mold 2 and connected to the first drive assembly. The first mold body 301 is used to form the arc-shaped hole of the double-lumen conduit. The second forming mechanism 4 includes: a second drive assembly, a second mold body 401, and a third mold body 402. The second mold body 401 and the third mold body 402 are respectively connected to the second drive assembly. The first mold body 301 is used to form the straight hole of the double-lumen conduit, and the second mold body 401 is used to form the oblique hole of the double-lumen conduit.

[0041] In some embodiments of this application, such as Figure 9 , 11 As shown, the upper mold 1 includes: an upper mold body 102 and an upper mold core 103. The upper mold core 103 is connected to the upper mold body 102 on the side facing the lower mold 2. The upper mold core 103 has a first molding area 101. The upper mold body 102 has an upper cooling channel around the upper mold core 103. The upper cooling channel is used to pass in circulating coolant.

[0042] In some embodiments of this application, such as Figure 9 , 11 As shown, the lower mold 2 includes: a lower mold body 203 and a lower mold core 204. The lower mold core 204 is connected to the lower mold body 203 on the side facing the upper mold 1. The lower mold core 204 has a second molding area 201. The lower mold body 203 has a lower cooling channel around the lower mold core 204. The lower cooling channel is used to introduce circulating coolant.

[0043] In some embodiments of this application, such as Figure 2 , 4 As shown, the double-lumen conduit injection mold also includes: an upper end plate 5, a first positioning member 6, and a second positioning member 7. The upper end plate 5 is slidably disposed on one side of the upper mold 1 along the mold opening direction. The upper mold 1 and the lower mold 2 are connected by a mold locking device. The mold locking device, also known as a mold locking buckle or mold opening and closing device, is a commonly used existing product in the field. It is used to separate the upper mold 1 from the upper end plate 5 first, and then separate the upper mold 1 from the lower mold 2. The first positioning member 6 and the second positioning member 7 are respectively connected to the upper end plate 5 by bolts. The first positioning member 6 passes through the upper mold body 102 and the upper mold core 103 and is inserted into the first drive assembly to position the first mold body 301. The second positioning member 7 passes through the upper mold body 102 and is inserted into the second drive assembly to position the second mold body 401 and the third mold body 402.

[0044] In some embodiments of this application, such as Figure 10 As shown, the upper end plate 5 is used to connect with the fixed base of the injection molding machine. The four corners of the upper end plate 5 are provided with first guide posts 8, and the upper mold 1 and the lower mold 2 are slidably sleeved on the first guide posts 8.

[0045] In some embodiments of this application, such as Figure 12 , 13 As shown, the upper mold body 102 has a limiting groove 104, in which a bolt connected to the upper end plate 5 is inserted. The upper end plate 5 also has a groove 202 corresponding to the limiting bolt for placing the first elastic element 9 fitted on the limiting bolt. The first elastic element 9 applies a pushing force to the upper mold body 102. The first elastic element 9 is a cylindrical compression spring. When the upper mold body 102 contacts the upper end plate 5, there is a gap between the head of the limiting bolt and the bottom of the limiting groove 104 for the upper mold body 102 to move, so that the upper mold body 102 and the upper end plate 5 can be separated by a certain distance.

[0046] In some embodiments of this application, such as Figure 11 As shown, the upper end plate 5 is also connected to an injection tube 10. The injection tube 10 passes through the upper end plate 5 and the upper mold body 102 and is inserted into the upper mold core 103. It has an injection hole that communicates with the molding cavity. Injection molding is performed into the molding cavity through the injection tube 10.

[0047] In some embodiments of this application, such as Figure 4 As shown, the lower mold 2 also includes a bracket 205, which is connected to the lower mold body 203. The bracket 205 has a groove 202 for placing the pre-embedded pipe body. A limiting block 206 is also connected to the bracket 205. The limiting block 206 is used to limit the corresponding part of the pipe body in the groove 202, thereby improving the stability of the pipe body positioning.

[0048] In some embodiments of this application, such as Figure 7 , 8 As shown, the upper mold core 103 is also connected to the upper forming block 105, and the lower mold core 204 is also connected to the corresponding lower forming block 207. The upper forming block 105 and the lower forming block 207 are provided with forming grooves for forming one end of the double-lumen conduit. The upper forming block 105 and the lower forming block 207 are also provided with holes that connect the forming grooves and the grooves 202 and match the shape of the pre-embedded pipe body.

[0049] In some embodiments of this application, such as Figure 6As shown, the first driving component includes a first driving member 302 and a lever 303. The first driving member 302 and the lever 303 are respectively hinged to the lower mold 2. The first mold body 301 and the first driving member 302 are respectively connected to the lever 303. The rotational movement of the first mold body 301 is realized by the cooperation of the lever 303 and the first driving member 302.

[0050] In some embodiments of this application, such as Figure 6 As shown, the first driving component 302 is a hydraulic cylinder. The hydraulic cylinder is rotatably connected to the lower mold body 203 via a support rotatably connected to the lower mold body 203. The piston rod end of the hydraulic cylinder is hinged to one side of the fan-shaped lever 303 rotatably connected to the lower mold body 203. The other side of the lever 303 is connected to the first mold body 301 via a pin. When the first mold body 301 is inserted into the molding cavity, the first mold body 301 is used for arc-shaped hole molding. When the double-cavity conduit is demolded, the hydraulic cylinder rotates, driving the lever 303 to pull the first mold body 301 out of the double-cavity conduit.

[0051] In some embodiments of this application, such as Figure 5 , 6 As shown, the second driving assembly includes: a second driving component 403, a first slider 404, and a second slider 405. The second driving component 403 is connected to the lower mold 2. The first slider 404 is slidably disposed on the lower mold 2 along a straight line. The second slider 405 is slidably disposed on the first slider 404. The second slider 405 is also slidably disposed on the lower mold 2 along a straight line direction that has an angle with the sliding direction of the first slider 404. The third mold body 402 is connected to the second slider 405. By configuring the second slider 405, which can slide in the first slider 404, the function of the second driving component 403 synchronously driving the second mold body 401 and the third mold body 402 to move simultaneously along different straight lines is realized.

[0052] In some embodiments of this application, such as Figure 5 As shown, the second driving component 403 is a hydraulic cylinder, which is fixedly connected to the lower mold body 203 via a connecting plate. The lower mold body 203 is provided with a first slide rail 208 corresponding to the translational direction of the piston rod of the hydraulic cylinder. The piston rod of the hydraulic cylinder is connected to one side of the first slider 404. The first slider 404 is slidably inserted into the first slide rail 208. The other side of the first slider 404 is provided with a second slide rail 406 for slidably inserting the second slider 405. The second slide rail 406 is perpendicular to the first slide rail. The bottom surface of the first slide rail 208 is also provided with a third slide rail 209. The third slide rail 209 is parallel to the inclined hole in the double-lumen conduit. The second slider 405 is slidably inserted into the second slide rail 406. The second slider 405 is also connected to a column that is slidably inserted into the third slide rail 209.

[0053] In some embodiments of this application, the lower mold core 204 is also provided with a positioning block adjacent to the first slide 208. The positioning block has limit holes corresponding to the second mold body 401 and the third mold body 402 respectively. When injection molding, the second mold body 401 and the third mold body 402 pass through the corresponding limit holes respectively, and limit the first mold body 301 and the second mold body 401 through the limit holes.

[0054] In some embodiments of this application, such as Figure 2 As shown, the double-lumen conduit injection mold also includes: a lower end plate 11 and an ejector mechanism 12. The lower end plate 11 is connected to the lower mold 2, and the ejector mechanism 12 is disposed between the lower end plate 11 and the lower mold 2. The ejector mechanism 12 has an ejector end that can extend into the molding cavity, and the demolding operation of the double-lumen conduit is realized through the ejector mechanism 12.

[0055] In some embodiments of this application, such as Figure 2 As shown, the double-lumen conduit injection mold also includes: a vertical plate 13, which is disposed between the lower end plate 11 and the lower mold body 203. The lower end plate 11 is connected to the lower mold body 203 by bolts passing through the vertical plate 13. The ejector mechanism 12 is disposed in the area between the vertical plate 13, the lower end plate 11, and the lower mold body 203.

[0056] In some embodiments of this application, such as Figure 13 , 14 As shown, the ejector mechanism 12 further includes: a first plate 1201, a second plate 1202, a second guide post 1203, and ejector rods 1204. One end of the second guide post 1203 is disposed on the lower end plate 11, which is used to connect with the movable base of the injection molding machine. The first plate 1201 and the second plate 1202 are connected by bolts and then slidably fitted onto the second guide post 1203. The other end of the second guide post 1203 is inserted into the lower mold body 203. There are multiple ejector rods 1204. One end of 1204 is connected to the cavity between the first plate 1201 and the second plate 1202, and the other end is inserted into the channel that passes through the lower mold body 203 and the lower mold core 204 and communicates with the forming cavity. When the double-cavity conduit is formed, the end face of the ejector rod 1204 is used for the forming of the double-cavity conduit. When the double-cavity conduit needs to be formed, the first plate 1201 and the second plate 1202 drive the ejector rod 1204 to perform an ejection operation, ejecting the double-cavity conduit from the second forming area 201.

[0057] In some embodiments of this application, such as Figure 13As shown, the ejector mechanism 12 also includes: a third guide post 1205 and a second elastic element 1206. One end of the third guide post 1205 is connected between the first plate 1201 and the second plate 1202, and the other end is inserted into the through hole of the lower mold body 203. The second elastic element 1206 is a cylindrical compression spring and is fitted onto the third guide post 1205. The second elastic element 1206 applies a pushing force to the second plate 1202, thereby causing the first plate 1201 and the second plate 1202 to reset after ejection.

[0058] The tube to be pre-embedded is placed into the molding cavity by configuring the groove 202. The first mold body 301 with rotation function forms an arc-shaped tube body, the second mold body 401 with linear motion function forms a linear hole body, and the third mold body 402 with oblique linear motion function forms an oblique hole body. During the demolding process, each mold body can be removed from the corresponding hole body, thereby avoiding interference with the demolding process of the double-lumen conduit, thus realizing the molding and demolding function of the double-lumen conduit with pre-embedded tube body.

[0059] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A double-lumen catheter injection mold, characterized in that, include: The upper mold has a first forming area; The lower mold is slidably disposed on one side of the upper mold. The lower mold has a second forming area and a groove. The second forming area is connected to the groove. The groove is used to place the pre-embedded pipe body. The second forming area and the first forming area are used together to form the forming cavity of the double-lumen conduit. The first forming mechanism includes: a first driving component and a first mold body. The first mold body is rotatably disposed on the lower mold and connected to the first driving component. The first mold body is used to form the arc-shaped hole of the double-lumen conduit. The second forming mechanism includes: a second driving component, a second mold body, and a third mold body. The second mold body and the third mold body are respectively connected to the second driving component. The first mold body is used to form a straight hole in the double-lumen conduit, and the second mold body is used to form an oblique hole in the double-lumen conduit.

2. The double-lumen catheter injection mold according to claim 1, characterized in that, The first driving assembly includes: a first driving member and a lever, wherein the first driving member and the lever are respectively hinged to the lower mold, and the first mold body and the first driving member are respectively connected to the lever.

3. The double-lumen catheter injection mold according to claim 1, characterized in that, The second driving component includes: a second driving member, a first slider, and a second slider. The second driving member is connected to the lower mold. The first slider is slidably disposed on the lower mold along a straight line. The second slider is slidably disposed on the first slider. The second slider is also slidably disposed on the lower mold along a straight line that forms an angle with the sliding direction of the first slider. The third mold body is connected to the second slider.

4. The double-lumen catheter injection mold according to claim 1, characterized in that, Also includes: The upper end plate, the first positioning component, and the second positioning component are provided. The upper end plate is slidably disposed on one side of the upper mold along the mold opening direction. The upper mold and the lower mold are connected by a mold clamping device. The first positioning component and the second positioning component are respectively connected to the upper end plate. The first positioning component is inserted into the first driving assembly and positions the first mold body. The second positioning component is inserted into the second driving assembly and positions the second mold body and the third mold body.

5. The double-lumen catheter injection mold according to claim 1, characterized in that, Also includes: The lower end plate is connected to the lower mold, and the ejector mechanism is disposed between the lower end plate and the lower mold. The ejector mechanism has an ejector end that can extend into the molding cavity.

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