Medical infusion pump body and manufacturing method thereof

[0046] Figure 1-19 Shown are related explanatory diagrams of the present invention; the three-dimensional display diagrams of different orientations of the product structure targeted by this mold are as follows figure 1 Shown. The product is a thin shell, with an average wall thickness of 1.8mm, and the material is modified ABS+PC; the product is composed of four features: liquid medicine inlet A, first outlet B, second outlet C, and third outlet D; Product design, in figure 1 Under the parting of the main parting line designed in, the demolding design of the product is the difficult point of the mold structure design of this product. These difficulties are as follows: A2 is designed on the basis of the cylindrical shell feature A1 of the chemical inlet A feature A2, A3 are the side holes on the cylinder of A1, and A4 are the circular grooves on the wall of the cylinder of A1 that are concentric with the cylinder of B1. On the first outlet B feature, in addition to B1 being the basic cylinder feature, there are three features B2, B3, and B4 that affect demolding. B2 is the square hole located on the A1 cylinder, and B3 is the internal thread located in the B1 cylinder. B4 is a helical tooth; and on the same side of the B-pillar demolding direction, there are four features B5, B6, B7, and B8 that need to be demolded laterally. B5, B6, and B8 are irregular grooves, and B7 is a cylindrical hole. For the second outlet C feature, C1 is the basic cylinder, C2 is the inner groove, C3 side hole is connected to the B7 hole, C4 is the thread of the C1 cylindrical inner hole, C5 is located above C1, and its core pulling direction is the same as C2 Consistent side holes on B1. C6 and C7 are located below the main parting line, C6 is a hole, and C7 is a set of interval grooves. The third outlet D is the main shell of the product, D1 is a cylindrical shell, D2 is an irregular groove, D3 is a central column hole, D4 ​​is an oblique hole on the outer side wall, and D5 is a downward hole at the junction of D and A, located Above the main parting line; from the features and parting positions of the above products, the demolding of each feature is a difficult point in the mold structure design of this product. Therefore, it is necessary to make a detailed analysis of each feature before making a decision. The design of the characteristic demoulding mechanism and the design of the overall mold structure, the engineering details of the features of each part of the product are as follows figure 2 Shown; adopt figure 2 After the main parting line shown in the parting, the demolding of the outer wall shown in A1, B1, C1, D1 is relatively simple, which basically constitutes the wall of the cavity, but for the inner wall, different demolding is required. Solution: For the liquid medicine inlet A, the demolding direction of the inner wall of the A1 cylinder on it is the same as the mold opening direction, and A2, A3, A4 are perpendicular to it. Therefore, it is possible to design an insert for the inner wall molding and install it in the molding type. On the cavity side, A2 and A3 are respectively designed with one-side core-pulling molding inserts. The molding of A4 directly penetrates the cylindrical stepped inserts on the inner wall of A1 to form the molding inserts with B2 characteristics. Therefore, A4 molding inserts The core pulling distance d1≧42+(1~2)mm; the core pulling distance d2≧2+(1~2)mm required by A3; considering that A2 and C5 are located on the same side of the core pulling, they can be combined into the same side core pulling , The core-pulling distance is d3≧2+(1~2)mm; for the first outlet B, the B3 in it is an internal thread feature, and internal thread core-pulling is required to demold. Therefore, three-layer stripping can be considered Molding method, that is, B2 and A4 are core-pulled and demolded together, and the demolding direction is outward along the central axis of the B1 cylinder, and the required core-pulling distance needs to be at least d4≧42+(1~2)mm; B3 thread core is taken off Mold, thread pitch 2mm, thread depth 8mm, the number of turns of the thread core need to be turned N1≧4; B4 and B5, B6, B7, B8 are combined to demold together, and the demolding direction is along the central axis of the B1 cylinder Outside; for the second outlet C and the C4 inside it is an internal thread feature, it also needs to use internal thread core pulling for demolding, so you can consider using a two-layer demoulding method, that is, C2 and C6 are core pulling and demolding together, and the The mold direction is outward along the central axis of the C1 cylinder, and the required core pulling distance needs to be at least d5≧36+(1~2)mm; C4 thread core demoulding, thread pitch 3mm, thread depth 13mm, thread core needs The number of turns N2≧5; C3 is core-pulled and demolded together with B7; C5 is demolded together with A2; C7 is located on the side of the core and ejected and demolded with a flat thimble; for the third outlet D, D2 and D6 are formed In the design and main core inserts, D3 and D5 are individually designed with small core inserts, and D4 needs to design side core inserts separately. The required core pulling distance needs to be at least d6≧13+(1~2)mm. The molded parts of D6 are drawn out together with C6 and demolded; therefore, the final product parting layout and the layout of the demoulding mechanism are as follows image 3 As shown; in the layout, one mold and two cavities are used, the gate is a point gate pouring method, and the original size of the gate is designed as figure 2 As shown in the enlarged view of Gate. The cooling adopts surrounding waterway cooling, and each demoulding molded part is also designed with corresponding cooling pipes; the mold core adopts the inserting method, and each product is designed with a mold core; the assembly positioning of the mold core depends on the central tiger mouth platform and the four corners of the tiger mouth For the demolding of the aforementioned features, the following mechanism is planned to be used; for the molding of the characteristic part of the drug liquid inlet A, the outer wall of A1 is formed by cavity inserts, and A2 and C5 are formed by the front mold core pulling S, A3 is formed by the front mold core pulling mechanism T, and the inner wall of A1 and A4 are formed by R forming small cylindrical inserts. For the first exit B, the demoulding mechanism Q is used to realize it. There are three kinds of molded parts designed on the Q mechanism. The central core realizes the forming and demolding of B2 and A4, and the threaded core completes the forming and demolding of the B3 thread feature. The side core of the layer slider realizes the molding and demolding of B4 and B5, B6, B7, B8, and C3; for the second outlet C, the demolding mechanism X is used to achieve it. There are three molded parts on the X mechanism, the central type The core realizes the forming and demolding of C2 and C6, the threaded core completes the forming and demolding of the C4 thread feature, and the outer slider side core realizes the forming and demolding of the end face of C1 and C5. C7 is formed by the main core insert and ejected by the ejector pin; for the third outlet D, the forming and demolding mechanism Y of D4 is realized, and the rest D1, D2, D3 are formed by the main core and small core inserts To achieve this, D5 and D6 are respectively designed to meet and assemble small cylindrical inserts on the main cavity insert and the main core insert.

[0047] Therefore, the specific implementation of the structure of an injection mold for a medical infusion pump body is as follows: Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Picture 9 As shown, an injection mold for a medical infusion pump body includes a flange sleeve 1, a runner plate tie rod 2, a panel 3, a runner plate 4, a fixed template 5, a movable template 6, a movable mold backing plate 7, and a mold foot 8. Bottom plate 9, thimble push plate 10, thimble cover 11, Q rack cylinder 12, Q cylinder support 13, Q mandrel pulls T-slot slider 14, Q mandrel slider 15, mandrel water barrier 16, Mandrel outer end waterproof ring 17, Q mandrel core 18, Q thread sleeve 19, Q thread core 20, Q thread sleeve support plate 21, Q bracket 22, precision positioning block 23, Q wedge fast 24, Q slip Block limit bead 25, Q slider 26, Q slider booster spring 27, Q inclined guide column 28, Q slider side core 29, Q drive cylinder 30, point gate sleeve 31, panel small tie rod 32, limit Block 33, reset rod 34, top tube 35, top rod 36, midtos 37, X rack support 38, X rack guide 39, X rack cylinder 40, X first transmission gear 41, X rack 42. X bearing 43, X second transmission gear 44, X fast wedge 45, X slider limit bead 46, X slider 47, X slider booster spring 48, X inclined guide post 49, guide post compression block 50, X thread sleeve 51, X core shaft water barrier 52, X thread core 53, X middle layer core 54, X central core 55, S slider 56, S bending pin 57, C5 core 58, S Slider booster spring 59, A2 core 60, A3 core 61, T bending pin 62, T slider booster spring 63, T slider 64, first reset pin 65, swing rod 66, reset stop 67, resin opening Closer 68, mold cavity lock plunger 69, mold cavity lock 70, mold cavity lock rod 71, Q second transmission gear 72, Q first transmission gear 73, Q gear spindle bearing 74, X slider travel switch 75, Q slider travel switch 76, D4 molding insert 77, Y slider auxiliary spring 78, Y fast wedge 79, Y slider 80, Y inclined guide post 81, Y slider limit screw 82, Y slider limit Bead 83, D5 upper insert 84, D5 lower insert 85, cavity main insert 86, core main insert 87, R small cylindrical insert 88, mold base guide pillar 89, mold cavity guide pillar 90, support pillar 91. Trash nail 92.

[0048] The mold base assembly includes a panel 3, a runner plate 4, a fixed template 5, a movable template 6, a movable mold backing plate 7, a mold foot 8, a bottom plate 9, a thimble push plate 10, a thimble cover 11, and one side of the fixed mold The template runner plate 4 and the fixed template 5 are installed on the guide column 89 of the mold guide column through their respective guide sleeves. The runner plate 4 and the fixed template 5 can move along the guide column. The movable template 6, the movable mold backing plate 7 , The mold foot 8, the bottom plate 9 are fastened together by screws to form the movable mold part of the mold, the ejector push plate 10 and the ejector cover 11 are assembled together by screws to form the ejector plate of the mold; three core pulling mechanism components Including Q rack cylinder 12, Q cylinder support 13, Q mandrel pull T-slot slider 14, Q mandrel slider 15, mandrel water barrier 16, mandrel outer end waterproof ring 17, Q mandrel type Core 18, Q thread sleeve 19, Q thread core 20, Q thread sleeve support plate 21, Q bracket 22, precision positioning block 23, Q wedge fast 24, Q slider limit bead 25, Q slider 26, Q Slider booster spring 27, Q inclined guide post 28, Q slider side core 29, Q drive cylinder 30, Q rack cylinder 12 is installed on the bracket plate, the lower part is designed with a guide groove, one end of the center rod is fixed on the side of the mold, The cylinder body can slide along the guide groove. The upper end of the cylinder body is provided with a rack to drive the Q thread core 20 to rotate. The Q cylinder support 13 is installed on the bottom plate of the mold side by screws, and a Q mandrel is installed on it to pull the T-slot slide. Block 14, Q mandrel slider 15, mandrel outer end waterproof ring 17, Q mandrel core 18, Q threaded sleeve 19 are installed on the Q mandrel pull T-slot slider 14, Q mandrel slider 15 The oil cylinder is driven to drive the Q mandrel to pull the T-slot slider 14 to pull the core outward, and the Q mandrel pulls the T-slot slider 14 and the Q mandrel slider 15 to connect to the inclined T-slot connection, and the Q drives the oil cylinder 30 is installed on the side bottom plate, the cylinder center rod is connected with the Q mandrel slider 15; the first threading component includes Q thread sleeve 19, Q thread core 20, Q thread sleeve support plate 21, Q bracket 22, Q thread sleeve 19 is installed on the Q threaded sleeve support plate 21 by screws. One end of the Q threaded core 20 is installed with the Q threaded sleeve 19, and the other end is inserted into the Q slider side core 29, which becomes a part of the molded part of the plastic product, Q thread The core 20 is provided with gears meshing with the Q rack cylinder 12, the Q bracket 22 is installed on the bottom plate protruding from the side of the mold, and the secondary demolding components include Q wedge fast 24, Q slider limit beads 25, Q slider 26, Q slider booster spring 27, Q oblique guide post 28, Q slider side core 29, Q oblique guide post 28 is tightly pressed by Q wedge 24 and installed on the mold template 5 through screws, Q The sliding block 26 is installed on the movable template 6 through the sliding block pressing bar, and a spring hole is designed to place the Q sliding block booster spring 27. The Q sliding block 26 is limited by the Q sliding block limit ball 25, and the Q sliding block is limited. The ball 25 is installed on the movable template 6, the Q slider side core 29 and the Q slider 26 are installed separately at a fixed distance, and the fixed distance is controlled by the center rod of the Q slider booster spring 27; the power component includes a rack cylinder support Seat 38, guide block 39, rack cylinder 40, The second transmission gear 41, the rack 42, the bearing 43, the first transmission gear 44, and the guide block 39 are fastened on the rack cylinder support 38 by screws to provide guidance for the movement of the rack cylinder 40. The protruding end of the central cylinder rod is fixedly connected with the mold side template by screws to provide a fixed support point for the movement of the rack cylinder 40 on the guide block 39; the rack 42 is fastened to the rack cylinder 40 by screws, the second The transmission gear 41 and the first transmission gear 44 are mounted on a central shaft, which is mounted on a bearing support plate through a bearing 43; the side slider core pulling assembly includes an inclined guide post 49, a slider limit ball 48, and a wedge block 45. Mandrel water barrier 52, slider 47, guide post compression block 50, central core compression block 20, oblique guide post 49 is fastened on the fixed template of the mold through guide post compression block 50 and screws. The wedge block 45 is fastened and installed on the fixed template of the mold by screws, and is fastened and installed on the back of the slider 47 by screws. The slider 47 is installed on the movable template of the mold to form a guide groove for the sliding movement of the slider 47. Installed in the side hole of the slider 47 to provide sliding force for the lateral core-pulling movement of the slider 47. The slider 47 is provided with a water passage. The middle layer core 54 and the central core 55 pass through the central core. The pressure block 20 and the screw are fastened on the slider 47. The central core 55 is inlaid with a mandrel water barrier 52; the internal thread core pulling assembly includes a thread sleeve 51, a bracket 22, a thread core 53, and a thread sleeve 51 It is fastened and installed on the bracket 22 by screws, and the bracket 22 is installed on the mold template by screws. One end of the threaded core 53 is threadedly connected with the threaded sleeve 51, and the other end is the internal thread forming end, which passes through the collar installed on the bracket 22 It is inserted into the mold cavity assembly to form a part of the molded plastic product. The threaded core 53 is provided with a shaft gear that meshes with the second transmission gear 41; the front mold first core pulling mechanism has two groups, one of which includes S Slider 56, S bending pin 57, C5 core 58, S slide booster spring 59, A2 core 60, the other group includes A3 core 61, T bending pin 62, T slide booster spring 63, T slide 64, S-bend pin 57 and T-bend pin 62 are installed on the runner plate 4 through screws, S slider 56 and T slider 64 are installed on the fixed template 5 through the slider slot, S slider booster spring 59, C5 type The core 58 is mounted on the S slider 56, the T slider booster spring 63, and the A3 core 61 are mounted on the T slider 64; the first reset insert rod 65 is mounted on the fixed template 5, and the swing rod 66 is mounted on the movable mold backing plate 7, the reset stop 67 is installed on the ejector plate 10, the resin shutter 68 is installed on the movable template 6, the cavity lock rod 69 is installed on the runner plate 4, and the cavity lock 70 is installed on the fixed template 5. On the upper side, the cavity lock rod 71 is installed on the movable template 6; the Q second transmission gear 72 is installed on the first mandrel, the Q first transmission gear 73 and the Q gear mandrel bearing 74 are installed on the second mandrel; X The slider travel switch 75 and the Q slider travel switch 76 are installed on the movable template 6; the D4 side core pulling mechanism includes D4 molding insert 77, Y slider auxiliary spring 78, Y fast wedge 79, Y slider 80, Y inclined guide post 81, Y slider limit screw 82, Y slider limit bead 83, D4 molding insert 77, Y slider assist The spring 78 is installed on the Y slider 80, the Y inclined guide post 81 is installed on the fixed template 5 through the Y wedge 79 and screws, and the Y slider limit screw 82 and the Y slider limit ball 83 are installed on the movable template 6 Upper; D5 upper insert 84, cavity main insert 86 are fastened on the fixed template 5 by screws, D5 lower insert 85, core main insert 87 are fastened on the movable template 6 by screws, R is small The cylindrical insert 88 is installed in the cavity main insert 86 by interference, the mold carrier guide post 89 is installed on the panel 3, the cavity guide post 90 is installed on the movable template 6, and the support post 91 and the garbage nail 92 are installed on the bottom plate 9 on.

[0049] The mold base is selected to ensure the convenience of opening the pouring point of the product and the automatic injection production of the product. The mold base structure adopts the three-plate mold point gate mold base, and the Longji standard mold base LKM-DDI-A150- For the B150-C200 mold base, taking into account the space requirements for the installation of the above-mentioned demolding mechanism, the movable mold backing plate 6 is modified with an enlarged size to ensure the installation of the demolding mechanism.

[0050] The pouring system is a cold runner point gate pouring method, single-point feeding; in order to shorten the length of the runner and ensure the injection fluidity of the material flow, the gate sleeve adopts the flange type positioning ring flange sleeve 1; the runner system The horizontal flow channel on the middle flow plate 4 adopts Circular runner, the vertical runner passing through the fixed template 5 adopts the point sprue sleeve 31 to be mounted separately; the gate water inlet diameter

[0051] The mold cavity layout is one mold and two cavities. The two cavities are individually inlaid. The single cavity moldings mainly include the cavity main insert 86 and the core main insert 87. The cavity main insert 86 is made of mold steel 2738 , The surface roughness Ra = 0.8, the core main insert 87 is made of die steel P20.

[0052] The exhaust uses the insert gap exhaust, that is, the parting surface of the main insert 86 of the cavity and the main insert 87 of the core does not have a separate exhaust groove, but uses other inserts and the two main inserts. Exhaust through the gap during fitting, and the exhaust gap δ≦0.02mm.

[0053] The cooling adopts water cooling, two main inserts 86 for the cavity and one main insert 87 for the core. The pipe diameter In addition, a cooling pipe is specially set for the R small cylindrical insert 88, the Q mandrel core 18, and the X middle layer core 54 respectively, and the pipe adopts a water-blocking fin in the water tunnel for cooling.

[0054] The guiding and positioning of the mold is mainly composed of the mold base guide post 89 and the cavity guide post 90, the cavity main insert 86 and the core main insert 87 opening corresponding positioning slots for closed and repeated positioning.

[0055] The mold opening and closing parting surface has a total of 3 parting surfaces, namely P1, P2, and P3 parting surfaces; the parting surface opening and closing control parts include runner plate tie rod 2, panel small tie rod 32, and resin shutter 68. Mold cavity lock insert rod 69, mold cavity lock 70, mold cavity lock rod 71; the sequence of mold opening is P1→P2→P3; when opening, the distance of P1 opening is 150mm, when P1 is opened, the flow channel and the product After separation, P1 is opened, the fixed template 5 and the movable template 6 are kept closed under the suction of the resin shutter 68 and the spring on the runner plate pull rod 2, the mold is opened at the parting surface of P2, and P2 is opened The distance of the mold is 10mm; after P2 is opened, the movable mold continues to retreat. Under the pull of the runner plate tie rod 2 and the small tie rod 32 of the panel, the mold opens at the P3 parting surface, and the opening distance value of the P3 parting surface is considering the product If the ejection height and the stroke control of the side slider demoulding mechanism are required, the value is 120mm; when closing, the closing sequence is P3→P2→P1. To ensure this sequence, a cavity lock plunger 69, The P3 first closing control mechanism composed of the cavity lock 70 and the cavity lock lever 71. When the mold is closed, only the fixed template 5 and the movable template 6 are closed first to ensure that the cavity lock lever 71 locks the square hole in the cavity 70 The bolt moves to allow the cavity lock rod 69 to be inserted through, so as to realize the closure of P1 and P2; after P3 is closed, under the expansion of the spring on the runner plate pull rod 2, the mold is first closed at the parting surface of P2, After P2 is closed, the movable mold part is pushed by the ejector pin of the injection molding machine to overcome the resistance of the spring on the runner plate pull rod 2 and continue to close at the parting surface of P1.

[0056] The components of the ejection and reset mechanism mainly include the thimble push plate 10, the thimble cover 11, the limit block 33, the reset rod 34, the top tube 35, the top rod 36, the middle tos 37, the first reset insert rod 65, and the swing rod. 66. Reset stop 67, support column 91, trash nail 92; the function of limit block 33 is to adjust the upward ejection height of the ejector push plate 10, and the complete ejection of the product depends on the reset rod 34, the ejector 35, and the ejector 36 For a single mold cavity, in order to ensure that the ejector tube 35 and ejector rod 36 do not interfere with the side core-pulling slider molding insert, the ejector push plate 10 first reset mechanism is specially designed, and the mechanism parts are composed of parts 65 and 66 , 67 composition, when the mold is closed and reset, the first reset insert rod 65 moves downward to press the swing rod 66 to push the reset stop 67 and the thimble push plate 10 to reset first.

[0057] The demolding mechanism includes 4 kinds of mechanism designs: the front mold core pulling mechanism S and T with the characteristics of the liquid medicine inlet A, the demolding mechanism Q with the first outlet B characteristic, and the demolding mechanism X with the second outlet C characteristic. , And D4 feature demoulding mechanism Y.

[0058] The feature A front mold core pulling mechanism S and T have similar structures. The S mechanism is a typical bending pin driven front mold slider side core pulling mechanism. Its main components include S slider 56, S bending pin 57, and C5 type. Core 58, S slider booster spring 59, A2 core 60; S bent pin 57 is fixed on the runner plate 4 by screws. When the mold is opened at the P1 parting surface, the S bent pin 57 will assist the S slider booster spring 59 The S slider 56 is driven to perform a core-pulling movement to realize the separation of the C5 core 58, A2 core 60 and the product. The limit of the S slider 56 is limited by the groove wall of the slider opened in the fixed template 5. The sliding distance of the side core pulling of the S slider 56 is d3=4.0mm;

[0059] 12. The medical infusion pump body injection mold according to claim 1, said feature B three-layer demolding composite mechanism Q has three mechanism functions; the first one is the central core pulling to complete the demolding of features B2 and A4, The corresponding part is the Q mandrel core 18, the core pulling distance d4=45mm; the second is the core pulling of the middle layer thread feature, which completes the demolding of the B3 thread, and the corresponding part is the Q thread core 20, which is demolded The number of turns when rotating is 5 turns; the third is the outer core pulling, which completes the demoulding of features B4 and B5, B6, B7, and B8. The corresponding part is the Q slider side core 29, which has core pulling The distance is set to d7=46mm; the tail end of the Q mandrel core 18 is connected with the Q mandrel to pull the T-slot slider 14, and the Q driving cylinder 30 drives the Q mandrel core by driving the Q mandrel slider 15 18 Pull the core outward; the Q thread core 20 is sleeved on the Q mandrel core 18, and a driving gear is machined on it. The Q rack cylinder 12 is driven by the Q second transmission gear 72 and the Q first transmission gear 73 The Q thread core 20 rotates, the thread lead of the Q thread core 20 is controlled by the Q thread sleeve 19; the other section of the Q thread core 20 is sleeved in the Q slider side core 29 and passes through the Q slider 26 The Q slider side core 29 is fastened with the Q slider 26 by screws. The Q slider 26 is installed on the movable template 6 through the slider bead, and the Q slider 28 is installed on the fixed template 5. It is driven by the Q slider booster spring 27 to push it outwards, and it is limited by the Q slider limit bead 25; when the Q mechanism pulls the core for each feature on feature B, Q drives the cylinder 30 first The Q mandrel core 18 is driven to pull out the core, and then the Q rack cylinder 12 drives the Q thread core 20 to unthread, and finally the Q inclined guide post 28 drives the Q slider side core 29 to pull the core sideward.

[0060] The feature C two-layer demolding composite mechanism has two mechanism functions; the first is the central core pulling to complete the forming and demolding of C2 and C6, and the corresponding parts are X middle layer core 54 and X center Core 55, core pulling distance d4=50mm; the second is the outer thread feature core pulling to complete the forming and demolding of the C4 thread feature. The corresponding part is the X thread core 53, which rotates when demolding The number is 6 laps.

[0061] The tail ends of the X middle layer core 54 and the X central core 55 are connected to the X slider 47. The X slider 47 is mounted on the movable template 6 and is driven by the X inclined guide post 49. The guide post 49 is installed on the fixed template 5 through the guide post compression block 50; the X slider 47 is pushed out to be driven by the X slider booster spring 48, and is limited by the X slider limit ball 46.

[0062] The X thread core 53 is sleeved on the X middle layer core 54 and a driving gear is machined on it. The X rack cylinder 40 drives the X thread core through the X first transmission gear 41 and the X second transmission gear 44 53 to rotate, the thread lead of the X thread core 53 is controlled by the X thread sleeve 51; when the X mechanism pulls the core for each feature on feature C, the X rack cylinder 40 drives the X thread core 53 to unthread, and then The X slider 47 is driven by the X inclined guide post 49 to perform lateral core pulling.

[0063] The feature D4 slider demolding mechanism Y is a typical oblique guide pillar driven rear mold slider side core pulling mechanism, and its main components include D4 molding insert 77, Y slider auxiliary spring 78, and Y wedge block 79 , Y slider 80, Y inclined guide post 81, Y slider limit screw 82, Y slider limit ball 83. The sliding distance of the side core pulling of the Y slider 80 is d6=20mm.

[0064] In actual work, the working process of the mold is divided into the following steps, mold opening and mold closing; take the mechanism action of a single product as an example, such as Picture 10 , Picture 11 , Picture 12 , Figure 13 , Figure 14 , Figure 15 As shown, the mold opening process is completed by the following steps:

[0065] 1) After the mold injection is completed, wait for the mold to be opened, such Picture 10 Shown

[0066] 2) Q drive cylinder 30 drives Q mandrel core 18 to pull 45mm outwards, Q drive cylinder 30 stroke is about 97mm, such as Picture 11 Shown

[0067] 3) First remove the injection pressure, then use the Q rack cylinder 12 and its gear combination to drive the Q thread core 20 to complete the B3 thread unthreading, and the X rack cylinder 40 and its gear combination to drive the X thread core 53 to complete the C4 thread Unthreading, the stroke of the Q rack cylinder 12 is about 300mm, and the stroke of the X rack cylinder 40 is about 406mm, such as Picture 12 , Figure 13 Shown

[0068] First, the P1 parting surface is opened, and the mold opening action is used to remove the runner waste from the product. At the same time, the S-bend pin 57 drives the S slider 56 and the T-bend pin 62 drives the T slider 64 to perform core-pulling movement to achieve A2 and A3 characteristics. Demoulding. Then, the mold is opened at the P2 parting surface to complete the automatic shedding of the runner waste, such as Figure 5 Shown in d; the mold is opened at the P3 parting surface, the Q inclined guide post 28 drives the Q slider side core 29 to realize the demoulding of B4 and B5, B6, B7, and B8 features; the X inclined guide post 49 drives the X slider 47 outward core pulling to realize demoulding of C2 and C6; Y inclined guide post 81 drives Y sliding block 80 to realize demoulding of D4 feature, such as Figure 14 Shown

[0069] When the product is ejected, the ejector pin of the injection molding machine ejects the product from the main core insert 87 through the ejector tube 35 and the ejector pin 36 to achieve complete demolding of the product. The ejector pin of the injection molding machine ejects the ejector plate with a stroke of 30mm, such as Figure 15 Shown. The closing of the mold is completed according to the following steps:

[0070] 1) The spring on the reset lever 34 pushes the thimble push plate 10 and the thimble cover 11 first to return to their positions, such as Figure 16 Shown

[0071] 2) The mold is closed at the P3 parting surface, the Q slider side core 29, X slider 47, Y slider 80 are reset, such as Figure 17 Shown

[0072] 3) The mold is closed at the parting surface of P2 and P1, S slider 56, and T slider 64 are reset, such as Figure 18 Shown

[0073] 4) Q thread core 20, X thread core 53 reset; Q mandrel core 18 reset; such as Figure 19 As shown, the mold is completely closed, waiting for the next injection cycle.

[0074] The specific embodiments described herein are merely examples to illustrate the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the specific embodiments described or replace them in similar ways, but It will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.