Double nose bridge molding mold

Abstract

The invention discloses a double nose frame forming mold, comprising a conducting tube core mechanism, a nose tube inserting core mechanism and a mold core with a mold cavity, wherein a glue injection port connected to the mold cavity is provided on the mold core, the conducting tube core mechanism comprises a first arc-shaped core, a second arc-shaped core used for docking with the first arc-shaped core to form a conducting tube core, a first driving mechanism used for driving the first arc-shaped core to extend into the mold cavity or to be withdrawn from the mold cavity, and a second driving mechanism used for driving the second arc-shaped core to extend into the mold cavity or to be withdrawn from the mold cavity; the nose tube inserting core mechanism comprises a third arc-shaped core and a third driving mechanism used for driving the third arc-shaped core to extend into the mold cavity or to be withdrawn from the mold cavity, and the first arc-shaped core, the second arc-shaped core and the third arc-shaped core are enclosed with the inner wall surface of the mold cavity to form a molding cavity for forming a double nose frame. The double nose frame forming mold disclosed by the invention can form a double nose frame in which both the conducting tube and the nose tube inserting tube have a certain curvature.

Description

Technical Field

[0001] The invention relates to the field of moulds, and in particular to a double nose frame forming mould. Background Art

[0002] like Figure 1 The double nose holder 500 shown is a medical device for oxygen supply system to assist breathing, including a conducting tube 501 and two nasal cannulas 502 connected to the conducting tube 501. The conducting tube and the nasal cannulas of the existing double nose holder are mostly made into straight tubes, which are uncomfortable for patients to wear. In view of the problems existing in the existing double nose holder, a new design of double nose holder has emerged, such as Figure 1 The double nose frame 500, the guide tube 501 and the nasal tube 502 shown all have a certain curvature, which makes the patient more comfortable to wear. However, the existing double nose frame forming mold is no longer applicable to the change of the shape of the double nose frame, and a new double nose frame forming mold is needed. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to disclose a double nose bridge forming mold to solve the problem that the existing double nose bridge forming mold is no longer applicable to the change of the shape of the double nose bridge.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A double nose frame forming mold, comprising a conducting tube core mechanism, a nose tube inserting core mechanism and a mold core having a cavity, wherein the mold core is provided with a glue injection port connected to the cavity, the conducting tube core mechanism comprising a first arc-shaped core, a second arc-shaped core used for docking with the first arc-shaped core to form a conducting tube core, a first driving mechanism used for driving the first arc-shaped core to extend into the cavity or be withdrawn from the cavity, and a second driving mechanism used for driving the second arc-shaped core to extend into the cavity or be withdrawn from the cavity; the nose tube inserting core mechanism comprises a third arc-shaped core and a third driving mechanism used for driving the third arc-shaped core to extend into the cavity or be withdrawn from the cavity, and the first arc-shaped core, the second arc-shaped core and the third arc-shaped core are enclosed with the inner wall surface of the cavity to form a molding cavity for molding the double nose frame.

[0006] As an improvement, the first driving mechanism includes a first straight rod, a first curved rod with one end hinged to one end of the first straight rod, and a first sliding mechanism for driving the first straight rod to swing; the second driving mechanism includes a second straight rod, a second curved rod with one end hinged to one end of the second straight rod, and a second sliding mechanism for driving the second straight rod to swing; one end of the first straight rod away from the first curved rod is hinged to one end of the second straight rod away from the second curved rod; the first curved core is arranged at one end of the first curved rod away from the first straight rod; and the second curved core is arranged at one end of the second curved rod away from the second straight rod.

[0007] As an improved manner, a first guide column is provided on the first straight rod, the first slide mechanism comprises a first guide rod and a first guide block sleeved on the first guide rod, a first through hole is provided on the first guide block, and the first guide column is inserted into the first through hole;

[0008] The second straight rod is provided with a second guide column, the second slide mechanism includes a second guide rod and a second guide block sleeved on the second guide rod, the second guide block is provided with a second through hole, and the second guide column is penetrated in the second through hole.

[0009] As an improvement, the third driving mechanism includes a fixed block, a first slider, a push rod and a third sliding mechanism, the third arc-shaped core is installed on the first slider, the fixed block is provided with an arc-shaped guide rail, the first slider slides with the arc-shaped guide rail, the push rod is used to push the first slider to drive the third arc-shaped core to move toward the cavity, and the third sliding mechanism is used to drive the first slider to drive the third arc-shaped core to be removed from the cavity.

[0010] As an improved manner, the arc-shaped guide rail is an arc-shaped cavity opened in the fixed block, the first sliding block is arc-shaped, and the first sliding block can be slidably installed in the arc-shaped cavity.

[0011] As an improvement, the third sliding mechanism includes a guide plate spaced apart from the fixed block and movable up and down in a vertical direction relative to the fixed block, and a second slider arranged between the fixed block and the guide plate, the guide plate being provided with a guide groove, the second slider being provided with a first through groove in the vertical direction, the second slider being movable back and forth in a horizontal direction, the first slider being provided with a first column passing through the first through groove, and the second slider being provided with a second column passing through the guide groove.

[0012] As an improvement, the nose tube core mechanism also includes two clamping blocks arranged between the fixed block and the guide plate, the two clamping blocks are arranged at intervals in the vertical direction, and the fixing piece and the two clamping blocks are enclosed to form a sliding groove for the second sliding block to slide.

[0013] As an improvement, the double nose frame forming mold also includes an upper template, a lower template, a bottom plate, a spring and a rubber plug. The upper template, the lower template and the bottom plate are stacked in sequence, the spring is arranged between the lower template and the bottom plate, the rubber plug is used to connect the upper template and the lower template, and a guide plate hole for the guide plate to pass through is opened on the lower template, and the push rod and the bottom of the guide plate are connected to the bottom plate.

[0014] As an improved method, the mold core includes an upper mold core fixed to the upper mold plate and a lower mold core fixed to the lower mold plate, the upper mold core and the lower mold core enclose the mold cavity, and the first arc rod is provided with a limiting groove on the side facing the upper mold core and the second arc rod is provided with a limiting rib for being clamped in the limiting groove on the side facing the first arc rod and the second arc rod.

[0015] As an improved manner, a positioning column is convexly provided on the end surface of the first arc-shaped core facing the second arc-shaped core, and a positioning hole for the positioning column to penetrate and position is concavely provided on the end surface of the second arc-shaped core facing the first arc-shaped core.

[0016] The double nose frame forming mold disclosed in the present invention is used to form the conducting holes of the conducting tubes of the double nose frame by arranging a conducting tube core mechanism, and is used to form the breathing holes of the double nose frame inserting the nasal tubes by arranging a first arc core and docking with a second arc core to form a conducting tube core, and cooperate with a third arc core, so that the double nose frame forming mold can be used to form double nose frames in which both the conducting tube and the inserting nasal tube have a certain curvature, thereby meeting the requirements of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a double nose frame to be formed according to an embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a double nose bridge forming mold disclosed in an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the internal structure of a double nose bridge forming mold disclosed in an embodiment of the present invention;

[0020] Figure 4 An exploded schematic diagram of a mold core disclosed in an embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a conducting tube core mechanism disclosed in an embodiment of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the nose tube core mechanism disclosed in an embodiment of the present invention;

[0023] Figure 7 An exploded schematic diagram of a nasal tube core mechanism disclosed in an embodiment of the present invention from a first perspective;

[0024] Figure 8 An exploded schematic diagram of a second viewing angle of the nose tube core mechanism disclosed in an embodiment of the present invention;

[0025] Fig. 9 An exploded schematic diagram of a bottom perspective of a double nose bridge forming mold disclosed in an embodiment of the present invention;

[0026] Fig.10 A schematic diagram of the cooperation between the lower template and the wear-resistant part disclosed in an embodiment of the present invention;

[0027] Fig.11 for Fig.10 A partial enlarged schematic diagram in the middle;

[0028] Fig.12 for Figure 3 An exploded schematic diagram of the structure shown;

[0029] Fig.13 for Fig.12 A partial enlarged schematic diagram of point B in the middle;

[0030] Fig.14 It is a structural schematic diagram of the bottom perspective of the upper model disclosed in an embodiment of the present invention;

[0031] Fig.15 A schematic structural diagram of a first arc-shaped core, a second arc-shaped core, a first arc-shaped rod, and a second arc-shaped rod disclosed in an embodiment of the present invention;

[0032] Fig.16 for Fig.15 A partial enlarged schematic diagram of point C in the middle. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] See also Figure 1-4 and Figure 6 The embodiment of the present invention discloses a double nose bridge molding mold 100, including a conducting tube core mechanism 10, a nose tube inserting core mechanism 20 and a mold core 30, wherein the mold core 30 has a mold cavity 301, and the mold core 30 is provided with a glue injection port 302 connected to the mold cavity 301, and the conducting tube core mechanism 10 includes a first arc-shaped core 11, a second arc-shaped core 12 for docking with the first arc-shaped core 11 to form the conducting tube core 101, and a second arc-shaped core 12 for driving the first arc-shaped core 11 to extend into the mold cavity 301 or to be ejected from the mold cavity 301. The first driving mechanism 13 for pulling out and the second driving mechanism 14 for driving the second arc-shaped core 12 to extend into the cavity 301 or to be pulled out from the cavity 301; the nose tube core mechanism 20 includes a third arc-shaped core 21 and a third driving mechanism 22 for driving the third arc-shaped core 21 to extend into the cavity 301 or to be pulled out from the cavity 301. The first arc-shaped core 11, the second arc-shaped core 12 and the third arc-shaped core 21 are enclosed with the inner wall surface of the cavity 301 to form a molding cavity for molding a double nose frame. The conducting tube core mechanism 10 is used to mold the conducting hole 503 of the conducting tube 501 of the double nose frame, and the nose tube core mechanism 20 is used to mold the breathing hole 504 of the nose tube 502 of the double nose frame.

[0038] When the double nose frame molding mold 100 disclosed in the present embodiment is injection molding the double nose frame 500, the first driving mechanism 13 drives the first arc-shaped core 11 to extend into the mold cavity 301, and the second driving mechanism 14 drives the second arc-shaped core 12 to extend into the mold cavity 301, until the first arc-shaped core 11 and the second arc-shaped core 12 abut to form the conducting tube core 101, and the third driving mechanism 22 drives the third arc-shaped core 21 to extend into the mold cavity 301, and then, silica gel is injected into the molding cavity through the glue injection port 302. After cooling, the third driving mechanism 22 drives the third arc-shaped core 21 to withdraw from the mold cavity 301, the first driving mechanism 13 drives the first arc-shaped core 11 to withdraw from the mold cavity 301, and the second driving mechanism 14 drives the second arc-shaped core 12 to withdraw from the mold cavity 301, and the mold core 30 is opened to obtain the double nose frame 500. It should be noted that the first driving mechanism 13 driving the first arc-shaped core 11 to extend into the cavity 301 and the second driving mechanism 14 driving the second arc-shaped core 12 to extend into the cavity 301 can be performed synchronously.

[0039] The double nose frame forming mold 100 disclosed in this embodiment is provided with a conducting tube core mechanism 10 for forming the conducting hole 503 of the double nose frame conducting tube 501, and a nasal tube inserting core mechanism 20 for forming the breathing hole 504 of the double nose frame nasal tube inserting 502, and a first arc core 11 is provided to connect with the second arc core 12 to form the conducting tube core 101, and cooperates with the third arc core 21, so that the double nose frame forming mold 100 can be used to form a double nose frame forming mold 100 in which both the conducting tube 501 and the nasal tube inserting 502 have a certain curvature, thereby meeting the requirements of users.

[0040] See also Figure 5 As an improved way of the present embodiment, the first driving mechanism 13 comprises a first straight rod 131, a first curved rod 132 having one end hinged to one end of the first straight rod 131, and a first sliding mechanism 133 for driving the first straight rod 131 to swing. The second driving mechanism 14 comprises a second straight rod 141, a second curved rod 142 having one end hinged to one end of the second straight rod 141, and a second sliding mechanism 143 for driving the second straight rod 141 to swing. One end of the first straight rod 131 away from the first curved rod 132 is hinged to one end of the second straight rod 141 away from the second curved rod 142. The first curved core 11 is disposed at one end of the first curved rod 132 away from the first straight rod 131, and the second curved core 12 is disposed at one end of the second curved rod 142 away from the second straight rod 141. When the first arc-shaped core 11 and the second arc-shaped core 12 are connected, the first straight rod 131 , the second straight rod 141 , the first arc-shaped rod 132 and the second arc-shaped rod 142 are combined to form a fan-shaped structure.

[0041] As an improved method of this embodiment, the first straight rod 131 is provided with a first guide column 1311, and the first sliding mechanism 133 includes a first guide rod 1331 and a first guide block 1332 sleeved on the first guide rod 1331. The first guide block 1332 is provided with a first through hole 13321, and the first guide column 1311 is penetrated in the first through hole 13321. When in use, the first guide block 1332 slides along the first guide rod 1331, and the first guide block 1332 pulls the first straight rod 131 to swing through the first guide column 1311, and the swinging first straight rod 131 pulls the first arc rod 132 to move toward or away from the second arc rod 142. The first through hole 13321 is a waist-shaped hole.

[0042] As an improvement of this embodiment, the first guide block 1332 is provided with two first extension pieces 13322 spaced apart at one end facing the first straight rod 131, and the first straight rod 131 is partially sandwiched between the two first extension pieces 13322, wherein one of the first extension pieces 13322 is penetrated by the first through hole 13321. Preferably, the end of the first straight rod 131 close to the first arc-shaped rod 132 is sandwiched between the two first extension pieces 13322.

[0043] As an improved method of this embodiment, the second straight rod 141 is provided with a second guide column 1411, and the second slide mechanism 143 includes a second guide rod 1431 and a second guide block 1432 sleeved on the second guide rod 1431, and the second guide block 1432 is provided with a second through hole 14321, and the second guide column 1411 is penetrated in the second through hole 14321. When in use, the second guide block 1432 slides along the second guide rod 1431, and the second guide block 1432 pulls the second straight rod 141 to swing through the second guide column 1411, and the swinging second straight rod 141 pulls the second arc rod 142 to move toward or away from the first arc rod 132. The second through hole 14321 is a waist-shaped hole.

[0044] As an improvement of this embodiment, the second guide block 1432 is provided with two spaced second extension pieces 14322 at one end facing the second straight rod 141, and the second straight rod 141 is partially sandwiched between the two second extension pieces 14322, wherein one of the second extension pieces 14322 is penetrated by the second through hole 14321. Preferably, the end of the second straight rod 141 close to the second arc-shaped rod 142 is sandwiched between the two second extension pieces 14322.

[0045] See also Figure 6-8As an improved method of this embodiment, the third driving mechanism 22 includes a fixed block 221, a first slider 222, a push rod 223 and a third sliding mechanism 224. The third arc-shaped core 21 is installed on the first slider 222. The fixed block 221 is provided with an arc-shaped guide rail 2211. The first slider 222 and the arc-shaped guide rail 2211 are slidably matched. The push rod 223 is used to push the first slider 222 to drive the third arc-shaped core 21 to move toward the cavity 301. The third sliding mechanism 224 is used to drive the first slider 222 to drive the third arc-shaped core 21 to be pulled out of the cavity 301. Two third arc-shaped cores 21 are provided and are arranged in parallel.

[0046] As an improved way of this embodiment, the arc guide rail 2211 is an arc cavity opened in the fixed block, and the first slider 222 is arc-shaped, and the first slider 222 can be slidably installed in the arc cavity. In this design, by setting the arc cavity on the fixed block 221, the first slider 222 is installed in the arc cavity, and the structure is more compact. It can be understood that the arc guide rail 2211 is not limited to being an arc cavity opened in the fixed block 221, and it can also be a convex arc guide rail on the side of the fixed block 221, and the first slider 222 is recessed on the side facing the fixed part to be used for sliding with the arc guide rail. The specific design can be determined according to actual design needs.

[0047] As an improved way of the present embodiment, the third slide mechanism 224 includes a guide plate 2241 which is spaced apart from the fixed block 221 and can move up and down in the vertical direction relative to the fixed block 221, and a second slider 2242 which is arranged between the fixed block 221 and the guide plate 2241, the guide plate 2241 is provided with a guide groove 22411, the second slider 2242 is provided with a first through groove 22421 in the vertical direction, the second slider 2242 can move forward and backward in the horizontal direction, the first slider 222 is provided with a first column 2221 which penetrates the first through groove 22421, and the second slider 2242 is provided with a second column 22422 which penetrates the guide groove 22411. The guide groove 22411 includes a first groove portion 22412 which extends in the vertical direction and a second groove portion 22413 which extends obliquely at an angle to the vertical direction and is connected with the first groove portion 22412. It should be noted that the vertical direction described in this embodiment refers to the splitting and closing direction of the double nose bridge molding mold 100. The horizontal direction refers to the direction perpendicular to the splitting and closing direction of the double nose bridge molding mold 100.

[0048] During use, when the third arc-shaped core 21 needs to extend into the cavity 301, the push rod 223 and the guide plate 2241 rise synchronously in the vertical direction, and the push rod 223 pushes the first slider 222 to slide along the arc-shaped guide rail 2211. At this time, the first column 2221 on the first slider 222 pulls the second slider 2242 to move forward horizontally along the sliding direction of the first slider 222, and the second column 22422 on the second slider 2242 moves from the second groove portion 22413 of the guide groove 22411 to the first groove portion 22412 of the guide groove 22411. When the third arc-shaped core 21 needs to be extracted from the cavity 301, the push rod 223 and the guide plate 2241 descend synchronously in the vertical direction, the guide plate 2241 drives the second column 22422 to move horizontally backward through the second groove 22413, the second column 22422 drives the second slider 2242 to move horizontally backward, and the horizontally backward second slider 2242 drives the first slider 222 to slide along the arc guide rail 2211 through the first column 2221 until the third arc-shaped core 21 is extracted from the cavity 301.

[0049] As an improved method of this embodiment, the nose-inserting tube core mechanism 20 further includes two clamping blocks 23 disposed between the fixed block 221 and the guide plate 2241, the two clamping blocks 23 are disposed at intervals in the vertical direction, and the fixed block 221 and the two clamping blocks 23 enclose a slide groove for sliding the second slider 2242. It should be noted that the nose-inserting tube core mechanism 20 is not limited to limiting the sliding direction of the second slider 2242 by setting two clamping blocks 23, and the sliding direction of the second slider 2242 can also be limited by the cooperation of the slide rail and the slide groove.

[0050] As an improved manner of this embodiment, two second through slots 2212 spaced apart in the vertical direction are provided on one side of the fixing block 221 facing the guide plate 2241, and a clamping strip 231 is provided on one side of each clamping block 23 facing the fixing block 221, and the clamping strip 231 is embedded in the second through slot 2212. By providing the cooperation between the second through slot 2212 and the clamping strip 231, the clamping block 23 can be fixed on the fixing block 221 more accurately and stably.

[0051] As an improvement of the present embodiment, two push rods 223 are provided, and the fixing block 221 is provided with two through holes 2213 opened in the vertical direction and connected to the arc-shaped cavity, and the push rods 223 can be movably inserted into the through holes 2213 .

[0052] Please refer to 2-3. Figure 5 , Fig. 9As an improvement of the present embodiment, the double nose frame forming mold 100 further includes an upper template 40, a lower template 50, a bottom plate 60, a spring 70 and a rubber plug 80. The upper template 40, the lower template 50 and the bottom plate 60 are stacked in sequence, the spring 70 is arranged between the lower template 50 and the bottom plate 60, the rubber plug 80 is used to connect the upper template 40 and the lower template 50, and a guide plate hole 51 for the guide plate 2241 to pass through is opened on the lower template 50, and the bottom of the push rod 223 and the guide plate 2241 are both connected to the bottom plate 60.

[0053] When the double nose frame molding mold 100 disclosed in the present embodiment is molded, the upper mold plate 40 and the lower mold plate 50 are molded first, and then the bottom plate 60 and the lower mold plate 50 are molded. When the upper mold plate 40 and the lower mold plate 50 are molded, the first slide mechanism 133 and the second slide mechanism 143 respectively drive the first arc rod 132 and the second arc rod 142 to move toward each other during the process of the lower mold plate 50 moving toward the upper mold plate 40, until the first arc core 11 and the second arc core 12 are docked in the cavity 301, and then the lower mold plate 50 is molded with the bottom plate 60. During the process of the bottom plate 60 moving toward the lower mold plate 50, the bottom plate 60 pushes the third driving mechanism 22 to rise in the vertical direction, and the third slide mechanism 224 drives the third arc core 21 to extend into the cavity 301, and then the upper mold plate 40 and the bottom plate 60 are locked, and the mold is completed.

[0054] When the double nose frame forming mold 100 disclosed in the present embodiment is separated from the mold, the bottom plate 60 and the lower mold plate 50 are separated from the mold first, and then the upper mold plate 40 and the lower mold plate 50 are separated from the mold. When the bottom plate 60 and the lower mold plate 50 are separated from the mold, the parts locking the upper mold plate 40 and the bottom plate 60 are first released, and the bottom plate 60 moves in a direction away from the lower mold plate 50 under the action of the elastic force of the spring 70. At this time, the upper mold plate 40 and the lower mold plate 50 are kept in a mold-closed state under the action of the pulling force of the rubber plug 80, and the guide plate is driven in the process of the bottom plate 60 moving downward. 2241 and the push rod 223 move downward synchronously, and the downwardly moved guide plate 2241 drives the third arc core 21 to be pulled out from the cavity 301. Subsequently, the lower template 50 and the upper template 40 are separated from the mold. When the lower template 50 moves away from the upper template 40, the first sliding mechanism 133 and the second sliding mechanism 143 respectively drive the first arc rod 132 and the second arc rod 142 to move in opposite directions until the first arc core 11 and the second arc core 12 are both pulled out from the cavity 301, and the separation is completed.

[0055] See also Figure 10-11 As an improvement of this embodiment, the lower template 50 includes a first surface 501 and a second surface 502 arranged opposite to the first surface 501, and the first surface 501 is recessed with an arc groove 52 toward the second surface 502, and the first arc rod 132 and the second arc rod 142 can be slidably embedded in the arc groove 52.

[0056] As an improvement of this embodiment, the double nose frame forming mold 100 further includes a wear-resistant part 90, which is embedded in the bottom groove surface of the arc groove 52. By providing the wear-resistant part 90, the wear between the first arc core 11 and the second arc core 12 and the lower mold plate 50 can be reduced, thereby extending the service life of the mold.

[0057] As an improvement of this embodiment, an oil groove 91 is provided on one side of the wear-resistant member 90 facing the first arc rod 132 and the second arc rod 142. By providing the oil groove 91, lubricating oil can be added to the oil groove 91 to reduce the friction between the first arc rod 132 and the second arc rod 142 and the lower mold plate 50.

[0058] See also Figure 4-5 , Figure 12-14 As an improved method of this embodiment, the mold core 30 includes an upper mold core 31 fixed to the upper mold plate 40 and a lower mold core 32 fixed to the lower mold plate 50. The upper mold core 31 and the lower mold core 32 enclose a mold cavity 301. The first arc rod 132 is provided with a limiting groove 1321 on one side facing the upper mold core 31 and the second arc rod 142 and the side facing the upper mold core 31. The upper mold core 31 is provided with a limiting rib 311 for being clamped in the limiting groove 1321 on one side facing the first arc rod 132 and the second arc rod 142. In this design, the upper mold plate 40 can form a limiting support for the first arc core 11 and the second arc core 12 to prevent the pressure from being too high during injection molding, causing the first arc core 11 and the second arc core 12 to shift, thereby affecting the molding quality of the product.

[0059] As an improvement of the present embodiment, the double nose bridge molding mold 100 also includes a pressing block 1001, which is fixedly connected to the lower mold plate 50 to press the first arc rod 132 and the second arc rod 142 to prevent the first arc rod 132 and the second arc rod 142 from being displaced in the vertical direction and affecting the molding quality of the product.

[0060] As an improved method of this embodiment, the double nose frame forming mold 100 also includes a first guide block 1002 and a second guide block 1003. The lower mold plate 50 is also provided with a first guide block groove 53 and a second guide block groove 54. The first guide block 1332 can be slidably embedded in the first guide block groove 53, and the second guide block 1342 can be slidably embedded in the second guide block groove 54. The first guide block 1002 is arranged on the side of the first guide block 1332 away from the first straight rod 131 and fits with the first guide block 1332. The plane where the first guide block 1002 fits with the first guide block 1332 is an inclined plane parallel to the axial direction of the first guide rod 1331. The second guide block 1003 is arranged on the side of the second guide block 1342 away from the second straight rod 141 and fits with the second guide block 1342. The plane where the second guide block 1003 fits with the second guide block 1342 is an inclined plane parallel to the axial direction of the second guide rod 1431. The first guide block 1002 and the second guide block 1003 are both fixedly connected to the lower template 50 , and the first guide block 1332 and the second guide block 1342 are both fixedly connected to the upper template 40 .

[0061] See also Figure 15-16 As an improvement of the present embodiment, a positioning column 111 is convexly provided on the end surface of the first arc-shaped core 11 facing the second arc-shaped core 12, and a positioning hole 121 for the positioning column 111 to penetrate and position is concavely provided on the end surface of the second arc-shaped core 12 facing the first arc-shaped core 11. By providing the positioning column 111 and the positioning hole 121, the size of the conducting tube core 101 formed by the first arc-shaped core 11 and the second arc-shaped core 12 can be accurately determined, thereby improving the molding quality of the product.

[0062] As an improved method of this embodiment, a double nose frame forming mold includes two sets of conducting tube core mechanisms 10 and nose tube inserting core mechanisms 20, and the two sets of conducting tube core mechanisms 10 and nose tube inserting core mechanisms 20 are symmetrically arranged relative to the mold core 30. With this design, a set of double nose frame forming molds can simultaneously form two double nose frames 500 at one time, thereby improving production efficiency.

[0063] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A double nose bridge forming mold, characterized in that: It comprises a conducting tube core mechanism, a nose tube core mechanism and a mold core having a mold cavity, wherein the mold core is provided with a glue injection port communicating with the mold cavity, and the conducting tube core mechanism comprises a first arc-shaped core, a second arc-shaped core used for docking with the first arc-shaped core to form a conducting tube core, a first driving mechanism used for driving the first arc-shaped core to extend into the mold cavity or to be withdrawn from the mold cavity, and a second driving mechanism used for driving the second arc-shaped core to extend into the mold cavity or to be withdrawn from the mold cavity; The nose tube inserting core mechanism comprises a third arc-shaped core and a third driving mechanism for driving the third arc-shaped core to extend into the cavity or to be withdrawn from the cavity, and the first arc-shaped core, the second arc-shaped core and the third arc-shaped core are enclosed with the inner wall surface of the cavity to form a molding cavity for molding the double nose frame; The third driving mechanism comprises a fixed block, a first slider, a push rod and a third sliding mechanism, the third arc-shaped core is installed on the first slider, the fixed block is provided with an arc-shaped guide rail, the first slider is slidably matched with the arc-shaped guide rail, the push rod is used to push the first slider to drive the third arc-shaped core to move toward the cavity, and the third sliding mechanism is used to drive the first slider to drive the third arc-shaped core to be withdrawn from the cavity; the cavity is provided with two and arranged in parallel; The arc-shaped guide rail is an arc-shaped cavity opened in the fixed block, the first slider is arc-shaped, and the first slider can be slidably installed in the arc-shaped cavity; The third slide mechanism comprises a guide plate spaced apart from the fixed block and movable up and down in a vertical direction relative to the fixed block, and a second slider disposed between the fixed block and the guide plate, the guide plate being provided with a guide groove, the second slider being provided with a first through groove in a vertical direction, the second slider being movable forward and backward in a horizontal direction, the first slider being provided with a first column penetrating the first through groove, and the second slider being provided with a second column penetrating the guide groove; The nose tube core mechanism further includes two clamping blocks disposed between the fixed block and the guide plate, the two clamping blocks being spaced apart in the vertical direction, and the fixed block and the two clamping blocks enclose a slide groove for the second slider to slide; The guide groove includes a first groove portion extending in a vertical direction and a second groove portion extending obliquely at an angle to the vertical direction and communicating with the first groove portion.

2. The double nose bridge forming mold according to claim 1, characterized in that: The first driving mechanism includes a first straight rod, a first curved rod with one end hinged to one end of the first straight rod, and a first sliding mechanism for driving the first straight rod to swing. The second driving mechanism includes a second straight rod, a second curved rod with one end hinged to one end of the second straight rod, and a second sliding mechanism for driving the second straight rod to swing. One end of the first straight rod away from the first curved rod is hinged to one end of the second straight rod away from the second curved rod. The first curved core is arranged at one end of the first curved rod away from the first straight rod, and the second curved core is arranged at one end of the second curved rod away from the second straight rod.

3. The double nose bridge forming mold according to claim 2, characterized in that: The first straight rod is provided with a first guide column, the first slide mechanism comprises a first guide rod and a first guide block sleeved on the first guide rod, the first guide block is provided with a first through hole, and the first guide column is inserted into the first through hole; The second straight rod is provided with a second guide column, the second slide mechanism includes a second guide rod and a second guide block sleeved on the second guide rod, the second guide block is provided with a second through hole, and the second guide column is penetrated in the second through hole.

4. The double nose bridge forming mold according to claim 1, characterized in that: The double nose frame forming mold also includes an upper template, a lower template, a bottom plate, a spring and a rubber plug. The upper template, the lower template and the bottom plate are stacked in sequence. The spring is arranged between the lower template and the bottom plate. The rubber plug is used to connect the upper template and the lower template. A guide plate hole for the guide plate to pass through is opened on the lower template. The push rod and the bottom of the guide plate are connected to the bottom plate.

5. The double nose bridge forming mold according to claim 4, characterized in that: The mold core includes an upper mold core fixed to the upper mold plate and a lower mold core fixed to the lower mold plate, the upper mold core and the lower mold core enclose the mold cavity, and limiting grooves are provided on the side of the first arc rod facing the upper mold core and the side of the second arc rod facing the upper mold core, and the side of the upper mold plate facing the first arc rod and the second arc rod is provided with limiting ribs for being clamped in the limiting grooves.

6. The double nose bridge forming mold according to claim 1, characterized in that: A positioning column is convexly provided on the end surface of the first arc-shaped core facing the second arc-shaped core, and a positioning hole for the positioning column to penetrate and position is concavely provided on the end surface of the second arc-shaped core facing the first arc-shaped core.

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