Nylon pulley blank injection molding apparatus

Abstract

The application relates to the technical field of nylon pulley processing, and discloses a nylon pulley blank injection molding equipment, which comprises a frame body, a fixed upper mold frame is arranged at the top of the frame body, and a movable lower mold frame is arranged in the fixed upper mold frame; the fixed upper mold frame comprises a fixed mold plate frame fixedly connected to the top of the frame body, an injection upper mold is fixedly connected to the inner wall of the top of the fixed mold plate frame, and the movable lower mold frame comprises a lifting mold plate slidably installed in the fixed mold plate frame. The equipment integrates full-automatic processes of injection, mold closing, mold opening, ejection, transfer, cutting and discharging, greatly reduces manual intervention, improves production efficiency and continuity, and integrates a movable cutting assembly; through automatic switching of three accurate stations (material receiving, cutting and discharging), automatic separation and collection of nylon pulley injection molded parts and material sticks (nylon excess materials) are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nylon pulley processing, in particular to a nylon pulley blank injection molding equipment. BACKGROUND

[0002] In industrial production, nylon (polyamide) has become an ideal material for manufacturing transmission components such as pulleys due to its excellent mechanical properties, wear resistance, self-lubricating properties, and chemical corrosion resistance.

[0003] However, the traditional nylon pulley injection molding technology still has a series of problems to be solved in terms of production efficiency, product quality and automation level:

[0004] 1. The traditional nylon pulley injection molding adopts one cavity one mold design, and only one product can be produced per injection molding cycle, resulting in low production efficiency;

[0005] 2. After injection molding, the material handle connecting the two pulleys needs to be removed, and the traditional process generally relies on manual breaking, which not only has low efficiency, but also easily produces burrs or damages the product at the breaking point, affecting the appearance and performance of the pulley. This process also cannot guarantee the flatness of the cutting surface, and may need secondary processing, increasing the cost;

[0006] Therefore, the nylon pulley injection molding automation equipment is proposed to realize the integration of mold forming, product taking out and transferring, cutting and feeding, and to realize precise positioning and seamless connection between stations through cylinder, linear module and other driving elements, reduce manual intervention, and finally build an efficient and stable automation production line. SUMMARY

[0007] In view of the deficiencies of the prior art, the present application provides a nylon pulley blank injection molding equipment, which mainly solves the problems of low injection efficiency and low automation level of the existing nylon pulley injection molding equipment.

[0008] To achieve the above purpose, the present application provides the following technical scheme:

[0009] A nylon pulley blank injection molding equipment, comprising a frame, a fixed upper mold frame is arranged on the top of the frame, and a movable lower mold frame is arranged in the fixed upper mold frame;

[0010] The fixed upper mold frame comprises a fixed mold plate frame fixedly connected to the top of the frame, and an injection upper mold is fixedly connected to the inner wall of the top of the fixed mold plate frame, the movable lower mold frame comprises a lifting mold plate slidingly installed in the fixed mold plate frame, and two transverse guide rails are fixedly connected to the upper surface of the lifting mold plate, and an injection lower mold matched with the injection upper mold is installed between the two transverse guide rails;

[0011] The inside of the frame body is provided with a mold closing cylinder for driving the injection mold lower die to move and close with the injection mold upper die;

[0012] The upper surface of the lifting mold plate is provided with a push-moving assembly for driving the injection mold lower die to move and a linkage type overturning assembly for driving the injection mold lower die to overturn, and one side of the fixed mold plate frame is provided with a stripping assembly for assisting the ejection of the nylon pulley injection molded part formed in the injection mold lower die;

[0013] The top of the frame body, away from the fixed mold plate frame, is provided with a movable cutting assembly for cutting and separating the nylon pulley injection molded part.

[0014] Further, two assembly grooves are formed in the top of the injection mold lower die, two symmetrically distributed inclined pressure slides are slidingly installed in the two assembly grooves, one end of each inclined pressure slide is fixedly connected with an open-close type mold core, opposite two open-close type mold cores form an injection cavity of the nylon pulley between the injection mold lower die, the other end of each inclined pressure slide penetrates through the injection mold lower die and is fixedly connected with an inclined pressure return spring in contact with the side surface of the injection mold lower die, an inclined pressure hole is formed in the top of each inclined pressure slide, an injection shunt channel connecting the two injection cavities is formed in the top of the injection mold lower die, a stripping plate is arranged in the inside of the injection mold lower die, a plurality of ejector pins are fixedly connected to the upper surface of the stripping plate, the top end of each ejector pin penetrates through the injection mold lower die and is in consistent with the arc profile of the inner wall of the injection cavity and the injection shunt channel, and a plurality of stripping return springs are arranged between the stripping plate and the injection mold lower die;

[0015] A profiling cavity matched with the injection shunt channel and the two injection cavities is formed in the bottom of the injection mold upper die, an injection hole communicated with the injection mold upper die and the injection shunt channel is formed in the top of the fixed mold plate frame, and an avoidance lower pressing column matched with the inclined pressure hole is arranged in the bottom of the injection mold upper die.

[0016] On the basis of the foregoing scheme, the two sides of the injection mold lower die are fixedly connected with side arms, a vertical bearing seat is arranged on the cylindrical end of each side arm, and the vertical bearing seat is fixed with a sliding table arranged on the top of the transverse guide rail;

[0017] A positioning pin hole is formed in one side of the injection mold lower die, and a positioning cylinder is fixedly connected to the lower surface of the lifting mold plate, and the piston end of the positioning cylinder can penetrate through the lifting mold plate and cooperate with the positioning pin hole.

[0018] As a further scheme of the present application, the push-moving assembly comprises a push-moving cylinder fixedly connected to one side of the lifting mold plate, a push-moving frame is fixedly connected to one end of the piston rod of the push-moving cylinder, and the two ends of the push-moving frame are rotatably connected with the cylindrical ends of the two side arms, respectively.

[0019] The upper surface of the lifting template is fixedly connected with two symmetrically distributed side supports, the inside of the side support is provided with a side groove matched with the waist round end of the side arm, and the end of the side groove is provided with a circular through groove for avoiding rotation of the waist round end of the side arm.

[0020] Further, the connecting type overturning assembly comprises a side mounting frame fixedly connected to one side of the lifting template and a connecting air cylinder, the inside of the side mounting frame is rotatably provided with a driving gear and a driven shaft, the circumferential outside of the driven shaft is fixedly connected with a driven gear engaged with the driving gear, one end of the piston rod of the connecting air cylinder is rotatably connected with the end of the driven shaft, the other end of the driven shaft is provided with a connecting hole matched with the waist round end of the side arm, one side of the driving gear is fixedly connected with a driving connecting shaft, and the upper surface of the lifting template is hingedly provided with a driving air cylinder, and one end of the piston rod of the driving air cylinder is rotatably connected with the driving connecting shaft.

[0021] On the basis of the foregoing scheme, the bottom of the injection molding lower mold is provided with a stripping hole;

[0022] The stripping assembly comprises a stripping mounting frame fixedly connected to the top of the fixed template frame, a stripping lifting air cylinder fixedly connected to one side of the stripping mounting frame, a stripping lifting frame fixedly connected to one end of the piston rod of the stripping lifting air cylinder and penetrating through the stripping mounting frame, a guide rod fixedly connected to the top of the stripping lifting frame and slidingly connected with the stripping mounting frame, a stripping air cylinder fixedly connected to one side of the stripping lifting frame, and a top rod fixedly connected to one end of the piston rod of the stripping air cylinder and penetrating through the stripping lifting frame, wherein one end of the top rod can penetrate through the stripping hole and contact the stripping plate.

[0023] As a further scheme of the present application, the top of the frame body is fixedly connected with four lower mold frame supports for supporting and positioning the lifting template.

[0024] Further, the moving type cutting assembly comprises a moving mounting frame fixedly connected to the top of the frame body, two symmetrically distributed moving guide rails fixedly connected to the top of the moving mounting frame, and a rotary cutting mechanism slidingly mounted between the two moving guide rails through a sliding table, one side of the moving mounting frame is fixedly connected with a ball screw linear module, the sliding table of the ball screw linear module is connected with the rotary cutting mechanism through a connecting plate, and the inside of the moving mounting frame is provided with a waste collecting box and a nylon pulley inclined chute.

[0025] On the basis of the foregoing scheme, the rotary cutting mechanism comprises a moving frame, two symmetrically distributed vertical plates fixedly connected to the bottom of the moving frame, rotary air cylinders fixedly connected to one side of the vertical plates, a rotary mold frame fixedly connected between the rotary ends of the two rotary air cylinders, and a transfer mold cavity provided in the inside of the rotary mold frame and matched with the molded nylon pulley injection molded part.

[0026] The top of the moving frame is fixedly connected with a cutting lifting cylinder, one end of the piston rod of the cutting lifting cylinder penetrates through the moving frame and is fixedly connected with a cutting lifting frame which is slidingly installed with the moving frame, and the bottom end of the cutting lifting frame is fixedly connected with a profiling cutter which cooperates with the rotating mold frame.

[0027] As a further scheme of the present application, one side of the moving installation frame is fixedly connected with three slot photoelectric switches, the positions of the three slot photoelectric switches correspond to the positions of the nylon pulley injection molded parts after transfer molding, cutting molding and discharging molding of the rotating cutting material mechanism respectively, and one end of the moving frame is fixedly connected with a sensing frame which cooperates with the three slot photoelectric switches.

[0028] Compared with the prior art, the present application provides a nylon pulley blank injection molding equipment, which has the following beneficial effects:

[0029] 1. The present application has high automation degree and improves production efficiency: the equipment integrates full-automatic processes of injection molding, mold closing, mold opening, ejection, transfer, cutting and discharging, greatly reduces manual intervention, and improves production efficiency and continuity.

[0030] 2. The present application has good molding quality and reduces product appearance defects: through precise mold closing guide (guide column) and mold positioning design (positioning cylinder and positioning pin hole), the mold closing precision is ensured, thereby ensuring the molding quality of the nylon pulley injection molded part; the automatic profiling cutter is used to cut off the nylon excess material, avoiding burrs generated by traditional manual breaking, and significantly improving the appearance quality of the product.

[0031] 3. The present application has high production efficiency due to the double-station design: the mold adopts a double-cavity design, molds two workpieces at a time, and fills through an optimized injection molding shunt channel, improving the output rate of single injection molding; and the split mold core design optimizes the convenience of removing the molded nylon pulley injection molded part.

[0032] 4. The present application has high process integration for automatic removal of the material handle (nylon excess material): the moving cutting assembly is integrated, and through automatic switching of three precise stations (material receiving, cutting and discharging), automatic separation and collection of the nylon pulley injection molded part and the material handle (nylon excess material) are realized.

[0033] 5. The present application is safe to operate and has low labor intensity: the entire production process, including mold opening and closing, ejection, mold flipping, separation of nylon excess material, collection and discharging of the nylon pulley injection, is automatically completed by driving elements such as cylinders, oil cylinders and ball screw linear modules, reducing the labor intensity and safety hazards of the operators.

[0034] 6. The positioning of this invention is precise and the operation is stable and reliable: the cylinders used in many parts of the equipment are equipped with magnetic switches or photoelectric switches, as well as precision guides (such as transverse guide rails and guide rods). The ball screw linear module is also equipped with slotted photoelectric switches, thereby ensuring the accuracy and reliability of the actions of each actuator and guaranteeing the stability of production. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural schematic diagram of an injection molding equipment for nylon pulley blanks proposed in this invention;

[0036] Figure 2 This invention provides an injection molding equipment for nylon pulley blanks. Figure 2 The main view;

[0037] Figure 3 This is a front view of the lower injection mold of a nylon pulley blank injection molding equipment proposed in this invention;

[0038] Figure 4 This is a schematic diagram of the openable mold core of the nylon pulley blank injection molding equipment proposed in this invention;

[0039] Figure 5 This is a schematic diagram of the closed state of the openable mold core of the nylon pulley blank injection molding equipment proposed in this invention;

[0040] Figure 6 This is a schematic diagram of the pushing component structure of a nylon pulley blank injection molding equipment proposed in this invention;

[0041] Figure 7 This invention provides an injection molding equipment for nylon pulley blanks. Figure 6 A schematic diagram of the structure on the right side;

[0042] Figure 8 This is a schematic diagram of the connecting flipping component structure of a nylon pulley blank injection molding equipment proposed in this invention;

[0043] Figure 9 This is a schematic diagram of the injection mold flipping state of an injection molding equipment for nylon pulley blanks according to the present invention;

[0044] Figure 10 This invention provides an injection molding equipment for nylon pulley blanks. Figure 9 A schematic diagram of the left-side structure;

[0045] Figure 11 This is a schematic diagram of the stripping assembly structure of a nylon pulley blank injection molding equipment proposed in this invention;

[0046] Figure 12A rotating cutting mechanism structure schematic view of a nylon pulley blank injection molding equipment is proposed in the present application;

[0047] Figure 13 A rotating cutting mechanism position and state schematic view of a nylon pulley blank injection molding equipment is proposed in the present application;

[0048] Figure 14 A rotating cutting mechanism position two state schematic view of a nylon pulley blank injection molding equipment is proposed in the present application;

[0049] Figure 15 A rotating cutting mechanism position three state schematic view of a nylon pulley blank injection molding equipment is proposed in the present application;

[0050] Figure 16 A nylon pulley injection molded part and nylon excess material schematic view of a nylon pulley blank injection molding equipment is proposed in the present application.

[0051] In the figure: 1, frame body; 101, lower die frame support; 102, clamping oil cylinder; 2, movable lower die frame; 3, push-moving assembly; 4, fixed upper die frame; 5, stripping assembly; 6, moving cutting assembly; 7, linking overturning assembly; 201, lifting die plate; 202, transverse guide rail; 203, injection lower die; 20301, assembly groove; 20302, side support arm; 20303, stripping plate; 20304, ejector pin; 20305, stripping reset spring; 20306, split core; 20307, inclined pressing hole; 20308, inclined pressing slide; 20309, inclined pressing reset spring; 20310, injection shunt passage; 20311, stripping hole; 204, positioning cylinder; 20401, positioning pin hole; 301, push-moving cylinder; 302, push-moving frame; 303, side support frame; 304, circular type through groove; 305, avoidance slot; 306, side slot; 401, fixed die plate frame; 402, injection hole; 403, injection upper die; 404, avoidance lower pressing column; 501, stripping installation frame; 502, stripping lifting cylinder; 503, guide rod; 504, stripping lifting frame; 505, ejector rod; 506, stripping cylinder; 601, moving installation frame; 602, rotary cutting mechanism; 60201, moving frame; 60202, connecting plate; 60203, vertical plate; 60204, rotary cylinder; 60205, rotary die frame; 60207, transfer die cavity; 60208, profiling cutter; 60209, cutting lifting frame; 60210, cutting lifting cylinder; 603, ball screw linear module; 604, slot type photoelectric switch; 605, waste collection box; 606, nylon pulley inclined chute; 607, moving guide rail; 701, side installation frame; 702, driving gear; 703, driven gear; 704, driven shaft; 705, linking hole; 706, rotary snap ring; 707, linking cylinder; 708, driving cylinder; 709, driving connecting shaft. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application in detail through embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0053] The serial numbers of components in the present application, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0054] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0055] Please refer to Figures 1-16 As shown in the drawings, a nylon pulley blank injection molding equipment includes a frame body 1, a fixed upper mold frame 4 is arranged at the top of the frame body 1, and a movable lower mold frame 2 is arranged in the fixed upper mold frame 4;

[0056] The fixed upper mold frame 4 includes a fixed mold plate frame 401 fixed on the top of the frame body 1 by bolts, and an injection upper mold 403 is fixed on the inner wall of the top of the fixed mold plate frame 401 by bolts; the movable lower mold frame 2 includes a lifting mold plate 201 slidingly installed in the fixed mold plate frame 401, and two transverse guide rails 202 are fixed on the upper surface of the lifting mold plate 201 by bolts; an injection lower mold 203 matched with the injection upper mold 403 is installed between the two transverse guide rails 202;

[0057] The inside of the frame body 1 is provided with a clamping oil cylinder 102 for driving the injection lower mold 203 to move and clamp with the injection upper mold 403;

[0058] Therefore, by starting the clamping oil cylinder 102, the clamping oil cylinder 102 is elongated and drives the injection lower mold 203 to move upward, so that the injection lower mold 203 clamps with the injection upper mold 403.

[0059] Both sides of the injection mold 203 are fixed with side support arms 20302 through bolts, the cylindrical end of the side support arm 20302 is provided with a vertical bearing seat, and the vertical bearing seat is fixed with the sliding table arranged at the top of the transverse guide rail 202;

[0060] Specifically, one side of the injection mold 203 is provided with a positioning pin hole 20401, the lower surface of the lifting mold plate 201 is fixed with a positioning cylinder 204 through bolts, and the piston end of the positioning cylinder 204 can pass through the lifting mold plate 201 and cooperate with the positioning pin hole 20401, and the top of the frame body 1 is fixed with four lower mold frame supports 101 supporting and positioning the lifting mold plate 201.

[0061] Since the injection position of the injection mold 203 needs to be accurately grasped, the positioning cylinder 204 cooperates with the positioning pin hole 20401 to realize accurate positioning of the injection position of the injection mold 203, and the cooperation of the plurality of lower mold frame supports 101 realizes the supporting and positioning of the lifting mold plate 201.

[0062] The upper surface of the lifting mold plate 201 is provided with a push-moving assembly 3 driving the injection mold 203 to move and a linkage type overturning assembly 7 driving the injection mold 203 to overturn, one side of the fixed mold plate frame 401 is provided with a stripping assembly 5 assisting the nylon pulley injection molded part formed in the injection mold 203 to be ejected;

[0063] The top of the frame body 1 and away from the position of the fixed upper mold frame 4 is provided with a movable cutting assembly 6 cutting and separating the formed nylon pulley injection molded part.

[0064] The top of the injection mold 203 is provided with two assembly grooves 20301, two symmetrical inclined pressure slides 20308 are slidingly installed in the two assembly grooves 20301, one end of the inclined pressure slide 20308 is fixed with an opening and closing type mold core 20306 through bolts, and the opposite two opening and closing type mold cores 20306 and the injection mold 203 form an injection cavity of the nylon pulley, the other end of the inclined pressure slide 20308 passes through the injection mold 203 and is fixed with an inclined pressure reset spring 20309 in contact with the side surface of the injection mold 203 through bolts, the top of the inclined pressure slide 20308 is provided with an inclined pressure hole 20307, the top of the injection mold 203 is provided with an injection shunt passage 20310 connecting the two injection cavities, the inside of the injection mold 203 is provided with a stripping plate 20303, the upper surface of the stripping plate 20303 is fixed with a plurality of ejector pins 20304 through bolts, and the top end of the ejector pin 20304 passes through the injection mold 203 and is consistent with the inner wall arc profile of the injection cavity and the injection shunt passage 20310, and a plurality of stripping reset springs 20305 are arranged between the stripping plate 20303 and the injection mold 203;

[0065] The bottom of the injection molding upper mold 403 is provided with a profiling cavity matched with the injection molding shunt channel 20310 and two injection cavities, the top of the fixed mold plate frame 401 is provided with an injection hole 402 communicated with the injection molding upper mold 403 and the injection molding shunt channel 20310, and the bottom of the injection molding upper mold 403 is provided with an avoiding lower pressing column 404 matched with the inclined pressing hole 20307.

[0066] When injection molding is performed, the injection molding lower mold 203 and the injection molding upper mold 403 are clamped by the clamping oil cylinder 102, at this time, the guide columns arranged at the four corners of the injection molding lower mold 203 and the injection molding upper mold 403 realize precise clamping, and the avoiding lower pressing column 404 arranged at the bottom of the injection molding upper mold 403 is inserted into the inclined pressing hole 20307, at this time, the inclined pressing slide 20308 is extruded and drives the opening and closing type mold core 20306 to move inward, so that the two opposite opening and closing type mold cores 20306 are docked, at this time, the nylon pulley injection cavity is formed between the two opposite opening and closing type mold cores 20306 and the injection molding lower mold 203, and the profiling cavity at the bottom of the injection molding upper mold 403 is matched with the injection cavity, then the external injection machine is connected with the injection hole 402, the injection material is injected into the injection cavity along the injection hole 402, and is extruded and formed, since the cooling pipelines are arranged in the injection molding upper mold 403 and the injection molding lower mold 203, the cooling and temperature reduction of the nylon pulley injection part after forming can be greatly accelerated, after injection molding is completed, the injection molding lower mold 203 and the injection molding upper mold 403 are opened by the clamping oil cylinder 102, and the avoiding lower pressing column 404 is separated from the inclined pressing hole 20307, at this time, the inclined pressing slide 20308 drives the opening and closing type mold core 20306 to move outward and reset under the elastic force of the inclined pressing reset spring 20309, and the nylon pulley injection part after forming is exposed, thereby facilitating subsequent taking operation.

[0067] It should be noted that the forming mold is a double-station mold, so the nylon pulley injection part after forming is two, and the two injection parts are connected by the nylon excess material formed by the injection molding shunt channel 20310, so the nylon excess material needs to be removed.

[0068] The existing removal method is to break by the staff, during the operation process, burrs are inevitably formed at the broken part of the nylon pulley injection part after forming, which affects the appearance of the nylon pulley injection part after forming, therefore, the automatic removal of the nylon excess material is needed to achieve better injection effect.

[0069] The pushing and moving assembly 3 of the present application comprises a pushing and moving cylinder 301 fixed on one side of the lifting mold plate 201 by a bolt, one end of the piston rod of the pushing and moving cylinder 301 is fixed with a pushing and moving frame 302 by a bolt, and the two ends of the pushing and moving frame 302 are respectively rotatably connected with the cylindrical ends of the two side arms 20302;

[0070] The upper surface of the lifting template 201 is fixed with two symmetrical side supports 303 by bolts, the inside of the side support 303 is provided with a side groove 306 matched with the waist round end of the side arm 20302, the end of the side groove 306 is provided with a circular through groove 304 for avoiding rotation of the waist round end of the side arm 20302, and the side of the lifting template 201 is provided with an avoiding groove 305 for limiting the turned injection lower mold 203.

[0071] Specifically, by starting the push cylinder 301, the extension of the push cylinder 301 pushes the injection lower mold 203 installed with the side arm 20302 to move along the transverse guide rail 202 through the push frame 302, since the cylindrical end of the side arm 20302 is fixed with the sliding table arranged on the top of the transverse guide rail 202 through the vertical bearing seat, therefore the injection lower mold 203 can only move along the transverse guide rail 202, without longitudinal deviation, until the waist round end of the side arm 20302 moves to the position of the circular through groove 304, and the push cylinder 301 stops elongation.

[0072] Referring to Figures 6-9 The connecting type turning assembly 7 in the application comprises a side mounting frame 701 and a connecting cylinder 707 fixed on one side of the lifting template 201 by bolts, the inside of the side mounting frame 701 is rotatably installed with a driving gear 702 and a driven shaft 704, the circumferential outside of the driven shaft 704 is fixed with a driven gear 703 engaged with the driving gear 702 by bolts, one end of the piston rod of the connecting cylinder 707 is rotatably connected with the end of the driven shaft 704 through a rotating clasp 706, the other end of the driven shaft 704 is provided with a connecting hole 705 matched with the waist round end of the side arm 20302, one side of the driving gear 702 is fixed with a driving connecting shaft 709, the upper surface of the lifting template 201 is hinged with a driving cylinder 708, and one end of the piston rod of the driving cylinder 708 is rotatably connected with the driving connecting shaft 709.

[0073] At this time, the engaging cylinder 707 is started, the engaging cylinder 707 piston rod is elongated, and the driven shaft 704 and the driven gear 703 are moved by the rotating ring 706 until the engaging hole 705 opened at the end of the driven shaft 704 is sleeved on the waist round end of the side support arm 20302, at this time the driven gear 703 is always in meshing state with the driving gear 702, then the driving cylinder 708 is started, the driving cylinder 708 is elongated to drive the driving gear 702 to rotate counterclockwise, the driving gear 702 rotates counterclockwise to drive the driven gear 703 and the driven shaft 704 to rotate clockwise, at this time the driven shaft 704 drives the side support arm 20302 and the injection mold 203 to rotate clockwise through the engaging hole 705 (because of the setting of the rotating ring 706, the rotation of the driven shaft 704 will not interfere with the piston rod of the engaging cylinder 707), until the injection mold 203 rotates 90°, at this time the injection mold 203 also abuts against the avoidance groove 305.

[0074] It should be noted that the width of the driven gear 703 is much larger than the width of the driving gear 702.

[0075] Next, the molded nylon pulley injection molded part and the nylon excess material (refer to Figure 16 ) need to be ejected:

[0076] Referring to Figure 10 , the bottom of the injection mold 203 is provided with a stripping hole 20311;

[0077] Referring to Figure 11 , the stripping assembly 5 includes a stripping mounting frame 501 fixed on the top of the fixed mold plate frame 401 by bolts, one side of the stripping mounting frame 501 is fixed with a stripping lifting cylinder 502 by bolts, one end of the stripping lifting cylinder 502 piston rod penetrates through the stripping mounting frame 501 and is fixed with a stripping lifting frame 504 by bolts, the top of the stripping lifting frame 504 is fixed with a guide rod 503 slidingly connected with the stripping mounting frame 501 by bolts, one side of the stripping lifting frame 504 is fixed with a stripping cylinder 506 by bolts, one end of the stripping cylinder 506 piston rod penetrates through the stripping lifting frame 504 and is fixed with a ejector rod 505 by bolts, one end of the ejector rod 505 can penetrate through the stripping hole 20311 and contact with the stripping plate 20303.

[0078] At this time, the stripping lifting cylinder 502 is started, the stripping lifting cylinder 502 is elongated to drive the stripping lifting frame 504 to move downward as a whole under the guidance of the guide rod 503 until the ejector rod 505 is aligned with the stripping hole 20311, at this time the stripping cylinder 506 is started, the stripping cylinder 506 is elongated to drive the ejector rod 505 to move, and the ejector rod 505 penetrates through the stripping hole 20311 and pushes the stripping plate 20303, at this time the stripping plate 20303 moves under force and drives the ejector pin 20304 to perform stripping work.

[0079] Referring to Figures 1-2 The movable cutting assembly 6 in the present application comprises a movable mounting frame 601 fixed on the top of the frame body 1 by bolts, the top of the movable mounting frame 601 is fixed with two symmetrical movable guide rails 607 by bolts, and a rotary cutting mechanism 602 (the specific structure is shown in Figure 12 ) is slidingly installed between the two movable guide rails 607 by a sliding table. One side of the movable mounting frame 601 is fixed with a ball screw linear module 603 by bolts, the sliding table of the ball screw linear module 603 is connected with the rotary cutting mechanism 602 through a connecting plate 60202, the inside of the movable mounting frame 601 is provided with a waste collecting box 605 and a nylon pulley inclined chute 606, the rotary cutting mechanism 602 comprises a movable frame 60201, the bottom of the movable frame 60201 is fixed with two symmetrical vertical plates 60203 by bolts, one side of the vertical plate 60203 is fixed with a rotary air cylinder 60204 by bolts, the rotary ends of the two rotary air cylinders 60204 are fixed with a rotary mold frame 60205 by bolts, and the inside of the rotary mold frame 60205 is provided with a transfer mold cavity 60207 for receiving the molded nylon pulley injection molded part;

[0080] The top of the movable frame 60201 is fixed with a cutting lifting air cylinder 60210 by bolts, one end of the piston rod of the cutting lifting air cylinder 60210 penetrates through the movable frame 60201 and is fixed with a cutting lifting frame 60209 slidingly installed with the movable frame 60201 by bolts, and the bottom end of the cutting lifting frame 60209 is fixed with a profiling cutter 60208 matched with the rotary mold frame 60205.

[0081] It should be noted that the air cylinder used in the present application is a power execution element that converts the pressure energy of compressed air into mechanical energy, which can be connected with an external air pipe and a solenoid valve and drive the piston to perform linear reciprocating motion by controlling the inflow and outflow of gas. Meanwhile, by cooperating with a magnetic switch, a proximity switch or a photoelectric switch, the precise control of the extension and retraction displacement of the piston rod of the air cylinder can be realized. Those skilled in the art can set it according to actual needs, which will not be described here.

[0082] Position one: the position of the molded nylon pulley injection molded part after transfer molding (as shown in Figure 13 The rotary mold frame 60205 at this position needs to be rotated to be horizontal, so that the side surface of the rotary mold frame 60205 can be attached to the side surface of the injection mold 203 rotated by 90°, and through the cooperation of the stripping assembly 5, the molded nylon pulley injection molded part and the nylon excess material in the injection cavity of the injection mold 203 are ejected into the transfer mold cavity 60207;

[0083] Position two: the position of cutting the molded nylon pulley injection molded part (as shown in Figure 14As shown in the drawings, at this position, the rotating die frame 60205 needs to be rotated to be vertical, the transfer die cavity 60207 needs to be upward, and the rotating die frame 60205 needs to be above the waste collecting box 605. By starting the cutting lifting cylinder 60210, the cutting lifting frame 60209 and the profiling cutter 60208 are moved downward as a whole, and the nylon excess material between the two formed nylon pulley injection molded parts is cut off by the profiling cutter 60208, and the cut nylon excess material falls into the waste collecting box 605 and is collected;

[0084] Position three: the position of the formed nylon pulley injection molded part after being discharged Figure 15 As shown in the drawings, at this position, the rotating die frame 60205 needs to be rotated to be vertical, the transfer die cavity 60207 needs to be downward, and the rotating die frame 60205 needs to be above the nylon pulley chute 606. After the rotating cutting mechanism 602 is switched from position two to position three, the rotating operation of the rotating die frame 60205 is performed by the rotating cylinder 60204. At this time, the cut formed nylon pulley injection molded part in the transfer die cavity 60207 falls into the nylon pulley chute 606 under the action of gravity, and rolls along the nylon pulley chute 606 and flows into the conveying belt;

[0085] In addition, one side of the moving mounting frame 601 is fixed with three slot photoelectric switches 604 by bolts, the positions of the three slot photoelectric switches 604 correspond to the transfer formed nylon pulley injection molded part position, the cut formed nylon pulley injection molded part position and the discharged formed nylon pulley injection molded part position of the rotating cutting mechanism 602 respectively, and one end of the moving frame 60201 is fixed with a sensing frame matched with the three slot photoelectric switches 604 by bolts. The model of the slot photoelectric switch 604 is EE-SX671.

[0086] Therefore, by cooperation of the three slot photoelectric switches 604 and the sensing frame, the precise switching of the rotating cutting mechanism 602 at different positions is realized.

[0087] The driving force for switching is the ball screw linear module 603. The ball screw linear module 603 realizes precise linear motion by cooperation of various components: the sliding table is a moving component, the ball screw-guide rail constitutes a transmission core, the motor-coupler provides power, and the aluminum alloy profile and the support seat guarantee structural stability. Those skilled in the art can set it according to actual needs, which will not be described here.

[0088] The application is used in the following steps:

[0089] S1: When injection molding, the lower injection mold 203 and the upper injection mold 403 are closed by the mold closing oil cylinder 102. At this time, the guide columns arranged at the four corners of the lower injection mold 203 and the upper injection mold 403 realize precise mold closing. The avoidance pressing column 404 arranged at the bottom of the upper injection mold 403 is inserted into the inclined pressing hole 20307. At this time, the inclined pressing slide 20308 is extruded and drives the split mold core 20306 to move inward, so that the two opposite split mold cores 20306 are docked. At this time, the two opposite split mold cores 20306 and the lower injection mold 203 form a nylon pulley injection cavity. The profiling cavity at the bottom of the upper injection mold 403 is matched with the injection cavity. Then the external injection machine is connected with the injection hole 402. The injection material is injected into the injection cavity along the injection hole 402 and is extruded and formed. Since the cooling pipeline is arranged in the upper injection mold 403 and the lower injection mold 203, the cooling and temperature reduction of the nylon pulley injection part after forming can be greatly accelerated.

[0090] S2: After the injection molding is completed, the lower injection mold 203 is moved downward and reset by the mold closing oil cylinder 102. The avoidance pressing column 404 is separated from the inclined pressing hole 20307. At this time, under the elastic force of the inclined pressing reset spring 20309, the inclined pressing slide 20308 drives the split mold core 20306 to move outward and reset, and the formed nylon pulley injection part is exposed.

[0091] S3: Then the push moving cylinder 301 is started. The push moving cylinder 301 is elongated, and the lower injection mold 203 installed on the side arm 20302 is moved along the horizontal guide rail 202 by the push moving frame 302. Since the cylindrical end of the side arm 20302 is fixed to the slide table arranged at the top of the horizontal guide rail 202 by the vertical bearing seat, the lower injection mold 203 can only move along the horizontal guide rail 202 and cannot be longitudinally deviated. Until the waist end of the side arm 20302 moves to the position of the circular through groove 304, the push moving cylinder 301 stops elongation.

[0092] S4: At this time, the engaging cylinder 707 is started, the engaging cylinder 707 piston rod is elongated, and the driven shaft 704 and the driven gear 703 are moved by the rotating ring 706 until the engaging hole 705 opened at the end of the driven shaft 704 is sleeved on the waist round end of the side support arm 20302, at this time the driven gear 703 always keeps meshing state with the driving gear 702, then the driving cylinder 708 is started, the driving cylinder 708 is elongated to drive the driving gear 702 to rotate counterclockwise, the driving gear 702 counterclockwise rotation drives the driven gear 703 and the driven shaft 704 to rotate clockwise, at this time the driven shaft 704 drives the side support arm 20302 and the injection mold lower mold 203 to rotate clockwise through the engaging hole 705 until the injection mold lower mold 203 rotates 90°, at this time the injection mold lower mold 203 also abuts against the avoidance slot 305;

[0093] S5: Then the rotating cutting mechanism 602 is moved to "position one" through the ball screw linear module 603, at this time the stripping lifting cylinder 502 is started, the stripping lifting cylinder 502 is elongated to drive the stripping lifting frame 504 to move downward as a whole under the guidance of the guide rod 503 until the ejector rod 505 is aligned with the stripping hole 20311, at this time the stripping cylinder 506 is started, the stripping cylinder 506 is elongated to drive the ejector rod 505 to move and make the ejector rod 505 pass through the stripping hole 20311 and push the stripping plate 20303, at this time the stripping plate 20303 moves under force and drives the ejector pin 20304 to perform stripping operation, so that the molded nylon pulley injection molded part and the nylon excess material in the injection mold lower mold 203 are ejected into the transfer mold cavity 60207;

[0094] S6: Then the rotating cutting mechanism 602 is moved to "position two" through the ball screw linear module 603, at this time the cutting lifting cylinder 60210 is started to drive the cutting lifting frame 60209 and the profiling cutter 60208 to move downward as a whole, and the profiling cutter 60208 cuts the nylon excess material between the two molded nylon pulley injection molded parts, and the cut nylon excess material falls into the waste collection box 605 for collection, then the cutting lifting cylinder 60210 is shortened to drive the cutting lifting frame 60209 and the profiling cutter 60208 to move upward as a whole and reset;

[0095] S7: Then the rotating cutting mechanism 602 is moved to "position three" through the ball screw linear module 603, when the rotating cutting mechanism 602 is switched from position two to position three, the rotating cylinder 60204 is used to rotate the rotating mold frame 60205, at this time the cut molded nylon pulley injection molded part in the transfer mold cavity 60207 falls into the nylon pulley chute 606 under the action of gravity, and flows into the conveying belt along the nylon pulley chute 606;

[0096] S8: At this point, the injection molding of the nylon pulley blank is completed, and the automatic cutting and separating operation of the nylon pulley and the nylon excess material is completed.

[0097] The technical features of the above embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, but it should be understood that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0098] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A nylon pulley blank injection molding equipment, comprising a frame (1), characterized in that, The top of the frame (1) is provided with a fixed upper mold frame (4), and a movable lower mold frame (2) is provided inside the fixed upper mold frame (4). The fixed upper mold frame (4) includes a fixed template frame (401) fixedly connected to the top of the frame (1). An injection upper mold (403) is fixedly connected to the inner top wall of the fixed template frame (401). The movable lower mold frame (2) includes a lifting template (201) slidably installed in the fixed template frame (401). Two transverse guide rails (202) are fixedly connected to the upper surface of the lifting template (201). An injection lower mold (203) that cooperates with the injection upper mold (403) is installed between the two transverse guide rails (202). The frame (1) is equipped with a mold closing cylinder (102) inside, which drives the lower injection mold (203) to move and close with the upper injection mold (403). The upper surface of the lifting template (201) is provided with a pushing component (3) for driving the lower injection mold (203) to move and a connecting flipping component (7) for driving the lower injection mold (203) to flip. The side of the fixed template frame (401) is provided with a stripping component (5) to help the nylon pulley injection molded parts formed in the lower injection mold (203) to be ejected. The top of the frame (1) and at a position away from the fixed upper mold frame (4) is provided with a shifting cutting assembly (6) for cutting and separating the molded nylon pulley injection molded parts. The shifting cutting assembly (6) includes a shifting mounting frame (601) fixedly connected to the top of the frame (1). Two symmetrically distributed shifting guide rails (607) are fixedly connected to the top of the shifting mounting frame (601). A rotary cutting mechanism (602) is slidably mounted between the two shifting guide rails (607) via a slide table. A ball screw linear module (603) is fixedly connected to one side of the shifting mounting frame (601). The slide table of the ball screw linear module (603) is connected to the rotary cutting mechanism (602) via a connecting plate (60202). The inner... The part is equipped with a waste collection box (605) and a nylon pulley inclined bucket (606). The rotary cutting mechanism (602) includes a transfer frame (60201). The bottom of the transfer frame (60201) is fixedly connected to two symmetrically distributed vertical plates (60203). A rotary cylinder (60204) is fixedly connected to one side of the vertical plate (60203). A rotary mold frame (60205) is fixedly connected between the rotating ends of the two rotary cylinders (60204). The rotary mold frame (60205) has a transfer mold cavity (60207) inside to receive the molded nylon pulley injection molded part. The top of the transfer frame (60201) is fixedly connected to a cutting lifting cylinder (60210). One end of the piston rod of the cutting lifting cylinder (60210) passes through the transfer frame (60201) and is fixedly connected to a cutting lifting frame (60209) that is slidably installed with the transfer frame (60201). The bottom end of the cutting lifting frame (60209) is fixedly connected to a contour cutter (60208) that cooperates with the rotating mold frame (60205).

2. The nylon pulley blank injection molding equipment according to claim 1, characterized in that, The top of the injection mold (203) has two assembly slots (20301). Two symmetrically distributed inclined pressure slides (20308) are slidably installed in each of the two assembly slots (20301). One end of each inclined pressure slide (20308) is fixedly connected to an opening and closing mold core (20306). The two opposing opening and closing mold cores (20306) and the injection mold (203) form an injection cavity with a nylon pulley. The other end of the inclined pressure slide (20308) passes through the injection mold (203) and is fixedly connected to an inclined pressure return spring (20309) that contacts the side of the injection mold (203). The top of the injection mold (208) is provided with a slanted pressure hole (20307). The top of the injection mold (203) is provided with an injection diversion channel (20310) connecting the two injection cavities. The injection mold (203) is provided with a stripper plate (20303) inside. Multiple ejector pins (20304) are fixedly connected to the upper surface of the stripper plate (20303). The top of the ejector pins (20304) passes through the injection mold (203) and is consistent with the arc contour of the inner wall of the injection cavity and the injection diversion channel (20310). Multiple stripper return springs (20305) are provided between the stripper plate (20303) and the injection mold (203). The bottom of the upper injection mold (403) is provided with a contoured cavity that cooperates with the injection diversion channel (20310) and two injection cavities. The top of the fixed template frame (401) is provided with an injection hole (402) that communicates with the upper injection mold (403) and the injection diversion channel (20310). The bottom of the upper injection mold (403) is provided with a relief pressure column (404) that cooperates with the inclined pressure hole (20307).

3. The nylon pulley blank injection molding equipment according to claim 1, characterized in that, Both sides of the injection mold (203) are fixedly connected with side support arms (20302). The cylindrical end of the side support arm (20302) is provided with a vertical bearing seat, and the vertical bearing seat is fixed to the slide table provided on the top of the transverse guide rail (202). The lower injection mold (203) has a positioning pin hole (20401) on one side. The lower surface of the lifting template (201) is fixedly connected to a positioning cylinder (204), and the piston end of the positioning cylinder (204) can pass through the lifting template (201) and cooperate with the positioning pin hole (20401).

4. The nylon pulley blank injection molding equipment according to claim 3, characterized in that, The pushing assembly (3) includes a pushing cylinder (301) fixedly connected to one side of the lifting template (201). One end of the piston rod of the pushing cylinder (301) is fixedly connected to a pushing frame (302), and both ends of the pushing frame (302) are rotatably connected to the cylindrical ends of the two side arms (20302). The upper surface of the lifting template (201) is fixedly connected to two symmetrically distributed side supports (303). The side supports (303) have a side groove (306) inside that matches the oval end of the side support arm (20302). The end of the side groove (306) has a circular through groove (304) for rotating and avoiding the oval end of the side support arm (20302). The lifting template (201) has a relief groove (305) on one side for limiting the flipped injection mold (203).

5. The nylon pulley blank injection molding equipment according to claim 3, characterized in that, The connecting tilting assembly (7) includes a side mounting bracket (701) fixedly connected to one side of the lifting template (201) and a connecting cylinder (707). Inside the side mounting bracket (701), a drive gear (702) is rotatably mounted via bearings, and a driven shaft (704) is threaded through it. A driven gear (703) meshing with the drive gear (702) is fixedly connected to the outer circumference of the driven shaft (704). One end of the piston rod of the connecting cylinder (707) is connected via… The rotating snap ring (706) is rotatably connected to the end of the driven shaft (704). The other end of the driven shaft (704) is provided with a connecting hole (705) that matches the oval end of the side support arm (20302). A drive connecting shaft (709) is fixedly connected to one side of the drive gear (702). A drive cylinder (708) is hinged to the upper surface of the lifting template (201), and one end of the piston rod of the drive cylinder (708) is rotatably connected to the drive connecting shaft (709).

6. The nylon pulley blank injection molding equipment according to claim 2, characterized in that, The bottom of the injection mold (203) is provided with a stripping hole (20311). The unloading assembly (5) includes an unloading mounting frame (501) fixedly connected to the top of the fixed template frame (401). An unloading lifting cylinder (502) is fixedly connected to one side of the unloading mounting frame (501). One end of the piston rod of the unloading lifting cylinder (502) passes through the unloading mounting frame (501) and is fixedly connected to the unloading lifting frame (504). A guide rod (503) that is slidably connected to the unloading mounting frame (501) is fixedly connected to the top of the unloading lifting frame (504). An unloading cylinder (506) is fixedly connected to one side of the unloading lifting frame (504). One end of the piston rod of the unloading cylinder (506) passes through the unloading lifting frame (504) and is fixedly connected to the top rod (505). One end of the top rod (505) can pass through the unloading hole (20311) and contact the unloading plate (20303).

7. The nylon pulley blank injection molding equipment according to claim 1, characterized in that, The top of the frame (1) is fixedly connected to four lower mold support members (101) for supporting and positioning the lifting template (201).

8. The nylon pulley blank injection molding equipment according to claim 1, characterized in that, Three slotted photoelectric switches (604) are fixedly connected to one side of the transfer mounting frame (601). The positions of the three slotted photoelectric switches (604) correspond to the positions of the nylon pulley injection molded parts after transfer molding, the nylon pulley injection molded parts after cutting molding, and the nylon pulley injection molded parts after blanking molding, respectively, of the rotary cutting mechanism (602). One end of the transfer frame (60201) is fixedly connected to a sensing frame that cooperates with the three slotted photoelectric switches (604).

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