A feeding device for injection-molded preforms and a feeding device for injection-molded preforms.

Abstract

This utility model relates to a material-tapping device for injection preform feeding, comprising a material-tapping bracket and a material-tapping platform, with a transfer assembly above the material-tapping platform; the transfer assembly has a material-receiving plate, and the material-receiving plate has multiple suction head assemblies and multiple air blowing connector assemblies. The suction head assemblies include multiple material-receiving suction heads, and the air blowing connector assemblies include multiple air blowing connectors. The material-tapping platform has a material-tapping component, which includes a positioning base plate, a feeding plate, a lifting cylinder, and a lifting plate. The feeding plate has multiple feeding holes and a guide cylinder with multiple guide channels inside. The lifting plate has multiple tapping plates, and each tapping hole has an impact bolt on its side. Each tapping plate is driven by the lifting cylinder to reciprocate twice, tapping the corresponding preform up and down to remove it. This utility model also relates to a feeding device for injection preforms. This utility model has an ingenious structure, enabling rapid and efficient feeding of preforms, and is convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of material tapping for injection preform feeding, and particularly to a material tapping device for injection preform feeding and an injection preform feeding device. Background Technology

[0002] In this technical field, particularly in the automated production of precision injection molded parts, the surface quality of the product is one of the key indicators for measuring production success. Bumps and scratches (also known as abrasions, scratches, or impacts) have long been a major quality defect plaguing the industry. These defects not only affect the product's appearance but can also damage its structural integrity and final performance, leading to decreased yield, increased production costs, and waste of raw materials and energy. Currently, the industry commonly uses robotic arms or automatic feeding devices to separate the injection-molded product from the sprue (gate) and allow it to fall into a designated collection tank or conveying device. However, existing feeding and unloading systems have many inherent design flaws, making them highly susceptible to bumps and scratches on the product during the separation and unloading process.

[0003] After the material feeding process is completed, due to the cooling efficiency of the injection preform, there is a situation where the product and the feed rod are not completely separated, i.e., "connected by threads". In addition, such products are not directly fed into the feed chute, but fall freely from a height. Their landing point and posture are completely random, and they are very likely to hit the products that have already fallen into the feed chute or collide with equipment parts, resulting in uncontrollable secondary impacts.

[0004] To address the aforementioned shortcomings, it is necessary to develop a method that can improve the feeding efficiency of each preform on the injection molding process while significantly reducing collision damage between products. Utility Model Content

[0005] The first objective of this invention is to provide a feeding device for injection preforms. This device features an ingenious structure that uses the secondary feeding of the feeding block and the vibration generated by the impact bolts striking the receiving plate to remove the preform during the feeding process. Furthermore, the device utilizes the lifting of the lifting plate and the transfer of the injection preform via a transfer assembly. This significantly reduces the height of each preform during the feeding process, ensuring that the preforms fall orderly into the receiving box and greatly preventing collisions and damage between preforms. It is convenient and practical.

[0006] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a material-feeding bracket and a material-feeding platform set on the material-feeding bracket. Above the material-feeding platform is a transfer assembly for transferring the completed injection preform from the injection molding machine to the material-feeding platform. The output end of the transfer assembly is provided with a picking plate for removing the injection preform. The picking plate is provided with multiple suction head assemblies for gripping the injection preform and multiple air blowing connector assemblies for accelerating the cooling and hardening of the injection preform. The suction head assembly includes multiple material-feeding suction heads, and the air blowing connector assemblies include multiple air blowing connectors. The material-feeding platform is provided with a material-feeding component that can remove each preform from the injection preform. The material-feeding component includes a positioning base plate fixed to the material-feeding platform, a discharge plate parallel to the positioning base plate, a lifting cylinder fixed to the discharge plate, and a lifting plate that is lifted and lowered on the discharge plate under the drive of the lifting cylinder. A discharge space is provided between the positioning base plate and the discharge plate. The discharge plate is provided with multiple discharge holes communicating with the discharge space. Multiple receiving holes are provided within the discharge space. The receiving box for the preforms after being tapped is connected to the corresponding discharge hole. The discharge plate is equipped with guide cylinders corresponding to each discharge hole. The guide cylinders have multiple guide channels corresponding to each preform. The lifting plate is equipped with tapping through holes corresponding to each guide cylinder and allowing the guide cylinders to pass through. Each tapping through hole is equipped with multiple tapping plates corresponding to each preform. The tapping through hole is equipped with multiple mounting slots corresponding to each tapping plate. Each tapping plate is installed in its corresponding mounting slot. Each tapping through hole has impact bolts on its side. The picking plate is driven by a robotic arm to transfer the injection preform to the top of the tapping assembly. Each tapping plate in each tapping through hole is driven by a lifting cylinder to reciprocate twice, tapping each preform on the corresponding injection preform on the picking plate. After the picking plate is vibrated by two impacts by the impact bolts, each preform on the injection preform is tapped off. After being tapped off by the tapping plate, each preform passes through the corresponding guide channel and falls into the corresponding receiving box.

[0007] Furthermore, each material-tapping plate is provided with a material-tapping inclined surface, which is used to guide the rotation of the embryo when the lifting plate is raised and when the material-tapping plate initially contacts the corresponding embryo.

[0008] Furthermore, the aforementioned guide cylinder includes an outer cylinder, an inner cylinder coaxially arranged with the outer cylinder, and multiple partition plates circumferentially distributed between the outer cylinder and the inner cylinder along the axis of the inner cylinder. The bottom of the outer cylinder is provided with a connecting flange coaxially arranged with the outer cylinder. Each connecting flange is provided with multiple connecting holes, and each connecting hole is equipped with a locking bolt. The feed plate is provided with locking screw holes corresponding to each locking bolt. Each guide cylinder is fixedly connected to the feed plate through the cooperation of each locking bolt and locking screw hole. The lower end of the inner cylinder is provided with a lower guide portion extending towards the outer cylinder in a direction perpendicular to the axis of the inner cylinder. The upper end of the outer cylinder is flush with the upper end of the inner cylinder, and the lower end of the lower guide portion is flush with the lower end of the outer cylinder. The outer cylinder and the inner cylinder are connected by various partition plates and are divided into multiple guide channels corresponding to each blank by the partition plates. The partition plates extend from the upper end of the outer cylinder to the lower end of the outer cylinder.

[0009] Furthermore, the outer cylinder has a first clearance groove on its side wall to avoid the material feeding plates in each mounting slot, and the inner cylinder has a plurality of second clearance grooves on its side wall to avoid the flow channels on each injection blank. The inner cylinder has a positioning part, which has a plurality of positioning grooves that correspond one-to-one with each flow channel and can position the injection blank by engaging with the flow channel. The first clearance groove and the second clearance groove in each material guide channel are coaxially arranged with the corresponding positioning groove. The upper end of the material guide cylinder is located above the lifting plate when the lifting plate is not raised or lowered.

[0010] Furthermore, the telescopic end of the aforementioned lifting cylinder is fixed to the lifting plate, and the unloading plate is provided with two oppositely arranged auxiliary cylinders. The telescopic ends of the auxiliary cylinders are fixed to the bottom of the lifting plate. Each corner of the unloading plate is provided with a guide post, and each corner of the lifting plate is provided with a lifting guide seat corresponding to each guide post. The lifting guide seat includes a guide cylinder through which the guide post can pass, and a buffer plate provided below the guide cylinder and located between the lifting plate and the unloading plate. Both the buffer plate and the guide cylinder are provided with through holes through which the guide rod can pass. The lifting plate is slidably connected to the unloading plate by the driving of the lifting cylinder, the driving of each auxiliary cylinder, and the sliding cooperation of the guide cylinder, the buffer plate and the guide post.

[0011] Furthermore, the aforementioned lifting plate is provided with mounting blocks corresponding to each of the first clearance slots. Each mounting block is provided with an air blowing pipe that can be connected to an air pump. Each air blowing pipe has an air blowing head at its output end. The air blowing head is driven by the air pump to blow air instantaneously at the connection between the blank and the flow channel body when the material is being patted by the material patting plate.

[0012] Furthermore, each receiving box is equipped with a handle.

[0013] Furthermore, the aforementioned material-picking platform is surrounded by side baffles.

[0014] The second objective of this invention is to provide a preform feeding device that transfers the preform after injection molding to the feeding component via a transfer assembly, thereby quickly and efficiently feeding each preform. At the same time, it orderly feeds the remaining waste material after feeding, avoiding the mixing of waste material in the preform with the preform and preventing the scattering of the remaining waste material in the preform, making it safe and practical.

[0015] The technical solution to achieve the purpose of this utility model is as follows: This utility model includes an injection molding machine, the aforementioned feeding device for injection preform, and a waste receiving device for receiving the sprue and runner body after feeding the injection preform. The transfer assembly is installed on the injection molding machine. The transfer assembly includes a transfer bracket fixed on the injection molding machine, a first motor mounted on the transfer bracket, a first movable frame slidably mounted on a movable bracket under the drive of the first motor, a second motor mounted on the first movable frame, a second movable frame slidably mounted on the first movable frame under the drive of the second motor, a third motor mounted on the second movable frame, a lifting frame raised and lowered on the second movable frame under the drive of the third motor, and a flipping assembly located at the lower end of the lifting frame for controlling the flipping of the feeding plate. The moving direction of the first movable frame and the moving direction of the second movable frame are perpendicular to each other. The lowering direction is perpendicular to the moving directions of the first and second moving frames. The flipping assembly includes a drive cylinder, a right-angle connecting plate, and a first and second rotating seat on the right-angle connecting plate. The material taking plate is mounted on the right-angle connecting plate. The first and second rotating seats are integrally formed and respectively set on two panels perpendicular to the right-angle connecting plate. The lower end of the lifting frame is rotatably connected to the first rotating seat. The drive cylinder is rotatably connected to the second rotating seat through a connecting rod. The material taking plate takes out and transfers the injection preform in the injection molding machine through the drive of the first moving frame by the first motor, the drive of the second moving frame by the second motor, and the drive of the lifting frame by the third motor. The material taking plate flips from the vertical state to the horizontal state through the rotatable connection between the lifting frame and the first rotating seat, the drive of the connecting rod by the drive motor, and the rotatable connection between the connecting rod and the second rotating seat.

[0016] Furthermore, the aforementioned waste receiving device includes a receiving bracket disposed on one side of the feeding bracket, a waste box disposed on the receiving bracket for receiving the injection embryo after the embryo feeding is completed, and a funnel-shaped guiding part disposed above the waste box. The guiding part and the waste box are disposed separately. The upper end of the guiding part is fixed on the receiving bracket, and the lower end of the guiding part extends into the waste box and presses against the upper surface of the waste box. A side handle is provided on the side of the waste box.

[0017] This utility model has the following positive effects: (1) By setting multiple air blowing joints on the material taking plate, the injection preform is actively cooled during the transfer of the injection preform, which improves the hardness of the preform and enhances the impact resistance of each preform on the injection preform, thereby reducing the impact damage to the preform. By setting a material taking component on the material taking platform, each material taking plate in each material taking through hole is driven by the lifting cylinder to reciprocate twice to hit each preform on the corresponding injection preform on the material taking plate. After the material taking plate is vibrated by impact bolts, each preform on the injection preform is knocked off. After each preform knocked off by the material taking plate passes through the corresponding guide channel, it falls into the corresponding receiving box. The guide cylinder and guide channel are set to set the feeding path of each preform separately and in an orderly manner, avoiding This design avoids collisions between preforms during their descent. A separate guide channel prevents preforms from piling up, getting stuck, or scattering haphazardly at the discharge port. Furthermore, the two-stage lifting of the lifting plate and the two-stage lifting of the impact bolts replace the single, forceful slapping action of existing technologies that causes collisions between preforms. The two slaps reduce the impact force and the speed of the falling preforms. Combined with the impact of the impact bolts on the receiving plate, the vibration generated by the receiving plate completely detaches each preform from the injection preform, preventing the tangled connection between preforms and the injection preform found in existing technologies. This significantly improves the efficiency and safety of preform feeding, greatly reducing the possibility of collisions between preforms. The structure is ingenious, convenient, and practical.

[0018] (2) By setting a sloping surface on the slapping plate, the sloping surface can guide the embryo to rotate in the early stage of contact between the slapping plate and the embryo, making it easier to separate, and making the separation process smoother and less labor-intensive, greatly reducing the impact between the slapping plate and the embryo, and also greatly reducing the damage to the embryo and wear of the slapping plate itself during the slapping process.

[0019] (3) This utility model sets the guide cylinder as an outer cylinder, an inner cylinder and a partition plate. The outer cylinder and the inner cylinder are divided into multiple guide channels by the partition plates, thereby ensuring that each blank can be fed from the corresponding guide channel. This further ensures the safety of each blank during feeding. At the same time, the guide cylinder is fixedly connected to the feeding plate by the cooperation of locking bolts and locking screw holes, ensuring the stability and disassembly of the guide cylinder during the feeding process, and also facilitating later maintenance, replacement and cleaning.

[0020] (4) This utility model provides a first clearance groove on the outer cylinder and a second clearance groove on the inner cylinder. The first clearance groove ensures the movement space of the patting plate and avoids interference between the patting plate and the outer cylinder. The second clearance groove provides movement space for the flow channel body, ensuring that the injection preform can smoothly enter the guide cylinder. At the same time, after the injection preform enters the guide cylinder, the height of each preform during the patting and feeding process can be reduced, further ensuring the safety of the preform during the feeding process and further reducing the collision of the preform during the feeding process.

[0021] (5) This utility model ensures the stability of the lifting plate during the lifting process by setting an auxiliary cylinder on the unloading plate, and buffers the lifting plate by using a buffer plate to avoid the impact of the abrupt lifting on the unloading plate, making it stable and practical.

[0022] (6) By setting an installation block corresponding to the first clearance groove and setting an air blowing pipe on the installation block, the instantaneous air blowing of the air blowing pipe has the dual functions of cooling catalysis and airflow shearing, which can assist in the impact and more cleanly and thoroughly separate the blank and the flow channel body, further improving the efficiency of blank impact and material feeding, which is efficient and convenient.

[0023] (7) By setting a handle on the receiving box, the present invention makes it convenient for operators to safely and easily place the receiving box filled with blanks, thereby improving operating efficiency.

[0024] (8) By setting side baffles around the material feeding platform, this utility model can effectively prevent the accidental splashing of blanks or waste materials, and also prevent external impurities from entering the material feeding assembly and affecting the smooth operation of each component in the material feeding assembly. It is safe and practical.

[0025] (9) This utility model realizes the molding of injection preforms through injection molding machine, realizes the interval, transfer, preform unloading and waste unloading through transfer component, and greatly improves the efficiency, stability and consistency of the entire production process through full-process automation.

[0026] (10) By setting the material guide part in the shape of a funnel, this utility model can reliably guide all waste materials into the waste box and avoid the waste materials from scattering. In addition, by setting the waste box and the material guide part separately, the waste box can be removed separately for cleaning or dumping without moving the entire material guide part, which is efficient and convenient. Attached Figure Description

[0027] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the overall structure of the injection preform feeding device in this utility model; Figure 2 This is a schematic diagram of the overall structure of the transfer component in this utility model; Figure 3 This is a schematic diagram of the overall structure of the flipping component in this utility model; Figure 4 This is a schematic diagram of the overall structure of the material handling plate in this utility model; Figure 5 This is an exploded view of the overall structure of the feeding device for injection preforms in this utility model; Figure 6 This is a schematic diagram of the overall structure of the material-pressing plate in contact with the blank in this utility model; Figure 7 This is a schematic diagram of the overall structure of the lifting plate in this utility model; Figure 8 This is a schematic diagram of the overall structure of the lifting guide seat in this utility model; Figure 9 This is a schematic diagram of the connection structure between the guide cylinder and the positioning part in this utility model; Figure 10 This is a schematic diagram of the overall structure of the guide cylinder in this utility model; Figure 11 This is a schematic diagram of the overall structure of the waste receiving device in this utility model; Figure 12 This is a schematic diagram of the structure in the background art of this utility model, showing the connection between the various embryo bodies on the injection embryo and the flow channel body. The attached figures are labeled as follows: Injection preform A, runner body A1, preform A2, injection molding machine 1, transfer assembly 2, transfer bracket 21, first moving frame 22, second moving frame 23, lifting frame 24, tilting assembly 25, drive cylinder 251, right-angle connecting plate 252, first rotating seat 253, second rotating seat 254, connecting rod 255, material picking plate 26, material picking suction head 27, air blowing connector 28, material tapping bracket 3, material tapping platform 31, side baffle 32, material tapping assembly 4, impact bolt 40, positioning base plate 41, material unloading plate 42, guide post 421, auxiliary cylinder 422, lifting plate 43, installation... 431, loading slot, 432, lifting cylinder, receiving box, 45, handle, 451, guide cylinder, 46, outer cylinder part, 461, inner cylinder part, 462, partition plate, 463, connecting flange, 464, first clearance groove, 465, second clearance groove, 466, guide channel, 467, positioning part, 471, positioning groove, 48, loading plate, 481, mounting block, 49, air pipe, 492, air head, waste receiving device, 5, receiving bracket, 51, waste box, 52, guide part, 53, side handle, 54, lifting guide seat, 6, buffer plate, 62. Detailed Implementation

[0028] See Figures 1 to 12This utility model relates to a feeding device for injection preform A, comprising a feeding bracket 3 and a feeding platform 31 mounted on the feeding bracket 3. Above the feeding platform 31 is a transfer assembly 2 for transferring the completed injection preform A from the injection molding machine 1 to the feeding platform 31. The output end of the transfer assembly 2 is provided with a picking plate 26 for removing the injection preform A. The picking plate 26 is provided with multiple suction head assemblies for gripping the injection preform A and multiple air blowing connectors 28 assemblies for accelerating the cooling and hardening of the injection preform A. The suction head assembly includes multiple picking suction heads 27, and the air blowing connectors 28 assemblies include multiple air blowing connectors 28 that can be connected to an external air pump. Each air-blowing connector, after being vented by an external air pump, hardens and catalyzes the injection preform. The material-feeding platform 31 is equipped with a material-feeding assembly 4 that can remove each preform A2 from the injection preform A. The material-feeding assembly 4 includes a positioning base plate 41 fixed to the material-feeding platform 31, a material-feeding plate 42 parallel to the positioning base plate 41, a lifting cylinder 44 fixed to the material-feeding plate 42, and a lifting plate 43 that is lifted and lowered on the material-feeding plate 42 under the drive of the lifting cylinder 44. A material-feeding space is provided between the positioning base plate 41 and the material-feeding plate 42. The material-feeding plate 42 has multiple material-feeding holes communicating with the material-feeding space, and multiple... A receiving box 45 is used to receive the blank A2 falling after being tapped. Each receiving box 45 is connected to a corresponding discharge hole. The discharge plate 42 is provided with a guide cylinder 46 corresponding to each discharge hole. The guide cylinder 46 is provided with multiple guide channels 467 corresponding to each blank A2. The lifting plate 43 is provided with a tapping through hole 432 corresponding to each guide cylinder 46 and allowing the guide cylinder 46 to pass through. Each tapping through hole 432 is provided with multiple tapping plates 48 corresponding to each blank A2. The tapping through hole 432 is provided with multiple mounting slots 431 corresponding to each tapping plate 48. Each tapping plate 48 is installed in the corresponding mounting slot 431. Inside, each material-tapping through hole 432 is equipped with an impact bolt 40 on its side. The material-taking plate 26 is driven by the robotic arm to transfer the injection preform A to the top of the material-tapping assembly 4. Each material-tapping plate 48 in each material-tapping through hole 432 is driven by the lifting cylinder 44 to reciprocate twice to tap each preform A2 on the corresponding injection preform A on the material-taking plate 26. After the material-taking plate 26 is vibrated by the impact bolt 40, each preform A2 on the injection preform A is tapped off. After being tapped off by the material-tapping plate 48, each preform A2 passes through the corresponding guide channel 467 and falls into the corresponding receiving box 45.

[0029] Each material-tapping plate 48 is provided with a material-tapping inclined surface 481, which is used to guide the rotation of the embryo A2 when the lifting plate 43 is raised and when the material-tapping plate 48 initially contacts the corresponding embryo A2.

[0030] The inclined surface 481 can guide the blank A2 to rotate in the initial stage of contact between the tapping plate 48 and the blank A2, making it easier to separate and making the separation process smoother and less labor-intensive. This greatly reduces the impact between the tapping plate 48 and the blank A2, and also greatly reduces the damage to the blank A2 caused by the tapping plate 48 during the tapping process, as well as the wear of the tapping plate 48 itself. The guide cylinder 46 includes an outer cylinder 461, an inner cylinder 462 coaxially arranged with the outer cylinder 461, and multiple partition plates 463 circumferentially distributed between the outer cylinder 461 and the inner cylinder 462 along the axis of the inner cylinder 462. The bottom of the outer cylinder 461 is provided with a connecting flange 464 coaxially arranged with the outer cylinder 461. Each connecting flange 464 has multiple connecting holes, and each connecting hole is fitted with a locking bolt. The feed plate 42 has locking screw holes corresponding to each locking bolt. Each guide cylinder 46 is fixedly connected to the feed plate 42 through the cooperation of each locking bolt and locking screw hole. The lower end of the inner cylinder 462 is provided with a lower guide portion 468 extending toward the outer cylinder 461 in a direction perpendicular to the axis of the inner cylinder 462. The upper end of the outer cylinder 461 is flush with the upper end of the inner cylinder 462, and the lower end of the lower guide portion 468 is flush with the lower end of the outer cylinder 461. The outer cylinder 461 and the inner cylinder 462 are connected by various partition plates 463, and are divided into multiple material guiding channels 467 corresponding to each blank A2 by the partition plates 463. The partition plates 463 extend from the upper end of the outer cylinder 461 to the lower end of the outer cylinder 461. The receiving box 45 is provided with receiving cavities corresponding to each material guiding channel 467.

[0031] The outer cylinder 461 has a first clearance groove 465 on its side wall to avoid the material tapping plate 48 in each mounting groove 431. The inner cylinder 462 has a plurality of second clearance grooves 466 on its side wall to avoid the flow channel body A1 on each injection blank A. The inner cylinder 462 has a positioning part 47, which has a plurality of positioning grooves 471 that correspond one-to-one with each flow channel body A1 and can position the injection blank A by engaging with the flow channel body A1. The first clearance groove 465 and the second clearance groove 466 in each material guide channel 467 are coaxially arranged with the corresponding positioning groove 471. The upper end of the material guide cylinder 46 is located above the lifting plate 43 when the lifting plate 43 is not raised or lowered.

[0032] The outer cylinder 461 and the inner cylinder 462 are separated into multiple material guiding channels 467 by various partition plates 463, thereby ensuring that each preform A2 can be fed out from the corresponding material guiding channel 467 individually. The first clearance groove 465 ensures the movement space of the patting plate 48 and avoids interference between the patting plate 48 and the outer cylinder 461. The second clearance groove 466 provides movement space for the flow channel body A1, ensuring that the injection preform A can smoothly enter the material guiding cylinder 46. At the same time, after the injection preform A enters the material guiding cylinder 46, the height of each preform A2 during the patting and feeding process can also be reduced, further ensuring the safety of the preform A2 during the feeding process and further reducing the collision of the preform A2 during the feeding process. The telescopic end of the lifting cylinder 44 is fixed on the lifting plate 43. The unloading plate 42 is provided with two oppositely arranged auxiliary cylinders 422. The telescopic ends of the auxiliary cylinders 422 are fixed to the bottom of the lifting plate 43. Each corner of the unloading plate 42 is provided with a guide post 421. Each corner of the lifting plate 43 is provided with a lifting guide seat 6 corresponding to each guide post 421. The lifting guide seat 6 includes a guide cylinder 62 through which the guide post 421 can pass, and a buffer plate 61 located below the guide cylinder 62 and between the lifting plate 43 and the unloading plate 42. Both the buffer plate 61 and the guide cylinder 62 are provided with through holes through which the guide rod can pass. The lifting plate 43 is slidably connected to the unloading plate 42 by the driving of the lifting cylinder 44, the driving of each auxiliary cylinder 422, and the sliding cooperation between the guide cylinder 62, the buffer plate 61 and the guide post 421.

[0033] The lifting plate 43 is provided with mounting blocks 49 corresponding to each of the first clearance slots 465. Each mounting block 49 is provided with an air blowing pipe 491 that can be connected to an air pump. Each air blowing pipe 491 has an air blowing head 492 at its output end. The air blowing head 492 is driven by the air pump to blow air instantaneously at the connection between the blank A2 and the flow channel body A1 when the material plate 48 is pressing the blank A2.

[0034] An air blowing pipe 491 is installed on the mounting block 49. After the air blowing pipe 491 is connected to an external air pump, it blows air onto the preform A2 instantaneously during the material tapping process. This has the dual functions of cooling and catalysis as well as airflow shearing, which can assist in tapping and more cleanly and thoroughly separate the preform A2 and the flow channel body A1.

[0035] Each receiving box 45 is equipped with a handle 451.

[0036] The material feeding platform 31 is surrounded by side baffles 32.

[0037] This utility model also relates to a feeding device for injection preform A, including an injection molding machine 1, a feeding device for injection preform A, and a waste receiving device 5 for receiving the sprue and runner body A1 after feeding on the injection preform A. The transfer assembly 2 is installed on the injection molding machine 1. The transfer assembly 2 includes a transfer bracket 21 fixed on the injection molding machine 1, a first motor mounted on the transfer bracket 21, a first movable frame 22 slidably mounted on a movable bracket under the drive of the first motor, a second motor mounted on the first movable frame 22, a second movable frame 23 slidably mounted on the first movable frame 22 under the drive of the second motor, a third motor mounted on the second movable frame 23, a lifting frame 24 raised and lowered on the second movable frame 23 under the drive of the third motor, and a flipping assembly 25 located at the lower end of the lifting frame 24 for controlling the flipping of the feeding plate 26. The moving direction of the first movable frame 22 is perpendicular to the moving direction of the second movable frame 23, and the lifting direction of the lifting frame 24 is perpendicular to the moving direction of the first movable frame 22 and the second movable frame 23. The movement direction is perpendicular. The flipping assembly 25 includes a drive cylinder 251 disposed at the lower end of the lifting frame 24, a right-angle connecting plate 252, and a first rotating seat 253 and a second rotating seat 254 disposed on the right-angle connecting plate 252. The material picking plate 26 is mounted on the right-angle connecting plate 252. The first rotating seat 253 and the second rotating seat 254 are integrally formed and respectively disposed on two panels perpendicular to the right-angle connecting plate 252. The lower end of the lifting frame 24 is rotatably connected to the first rotating seat 253. The drive cylinder 251 is perpendicular to the first rotating seat 253. 51 is rotatably connected to the second rotating seat 254 via the connecting rod 255. The picking plate 26 takes out and transfers the injection preform A in the injection molding machine 1 through the drive of the first moving frame 22 by the first motor, the drive of the second moving frame 23 by the second motor, and the drive of the lifting frame 24 by the third motor. The picking plate 26 flips from the vertical state to the horizontal state through the rotatable connection of the lifting frame 24 to the first rotating seat 253, the drive of the connecting rod 255 by the drive motor, and the rotatable connection of the connecting rod 255 to the second rotating seat 254.

[0038] The waste receiving device 5 includes a receiving bracket 51 disposed on one side of the feeding bracket 3, a waste box 52 disposed on the receiving bracket 51 for receiving the injection embryo A after the embryo body A2 has been fed, and a funnel-shaped guiding part 53 disposed above the waste box 52. The guiding part 53 and the waste box 52 are disposed separately. The upper end of the guiding part 53 is fixed on the receiving bracket 51, and the lower end of the guiding part 53 extends into the waste box 52 and presses against the upper surface of the waste box 52. A side handle 54 is provided on the side of the waste box 52.

[0039] The working principle of this utility model is as follows: During use, after the injection molding machine 1 completes the injection molding of the injection blank A, the material grabbing plate 26, driven by the first motor to the first moving frame 22, the second motor to the second moving frame 23, and the third motor to the lifting frame 24, removes and transfers the injection blank A from the injection molding machine 1. The material grabbing plate 26 rotates from a vertical state to a horizontal state through the rotational connection between the lifting frame 24 and the first rotating seat 253, the drive motor to the connecting rod 255, and the rotational connection between the connecting rod 255 and the second rotating seat 254. During the process of grabbing the injection blank A, each air blowing joint 28... Air is blown onto the injection preform A and each preform A2 on the injection preform A to accelerate the hardening of the injection preform A and preform A2. After the material grabbing plate 26 grabs the injection preform A and transfers it above the discharge assembly, each material grabbing plate 48 in each material grabbing through hole 432 is driven by the lifting cylinder 44 to lift the lifting plate 43 for the first time to pat each preform A2 on the corresponding injection preform A on the material grabbing plate 26 up and down. After the material grabbing plate 26 is vibrated by the impact bolt 40, during the upward movement of the lifting plate 43, the injection preform A is stuck into the guide cylinder 46, thereby reducing the height of each preform A2 when it is discharged. At the same time, during the material grabbing process... The air blowing head 492 cools, catalyzes, and assists in shearing the preform A2. Then, the lifting plate 43 lifts it a second time. During the second lifting, each tapping plate 48 taps the preform A2 again, and the impact bolt 40 impacts the picking plate 26 again, thereby knocking off each preform A2 from the injection preform A. After being knocked off by the tapping plates 48, each preform A2 passes through its corresponding guide channel 467. Each preform A2 has its own independent guide channel 467 during the feeding process, which not only avoids the accumulation of preforms A2 during feeding but also greatly reduces the risk of phase collisions during feeding. The possibility of mutual collision is eliminated. After each preform A2 passes through its corresponding guide channel 467, it falls into its corresponding receiving box 45. Then, the picking plate 26 knocks off all the preforms A2 and transfers the waste material to the top of the guide section 53 for discharge. Each waste material is guided into the waste box 52 by the guide section 53. Through a complete automated system, the injection preform A is realized from injection molding, picking, transfer, knocking off and waste material discharge. It effectively solves the problems of easy breakage and skewing of preforms A2 during the discharge process and mutual collision and accumulation of preforms A2 during the discharge process in the prior art. The structure is ingenious, convenient and practical.

[0040] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A preform feeding device, comprising a feeding bracket and a feeding platform mounted on the feeding bracket, wherein a transfer assembly for transferring a preform that has been successfully injected into an injection molding machine to the feeding platform is provided above the feeding platform; characterized in that: The output end of the transfer component is equipped with a pick-up plate for removing the injection preforms. The pick-up plate has multiple suction head assemblies for gripping the injection preforms and multiple air blowing connector assemblies to accelerate the cooling and hardening of the injection preforms. The suction head assembly includes multiple pick-up suction heads, and the air blowing connector assembly includes multiple air blowing connectors. The feeding platform is equipped with a feeding assembly for removing individual preforms from the injection preform. The feeding assembly includes a positioning base plate fixed to the feeding platform, a feeding plate parallel to the positioning base plate, a lifting cylinder fixed to the feeding plate, and a lifting plate that is lifted and lowered on the feeding plate under the drive of the lifting cylinder. A feeding space is provided between the positioning base plate and the feeding plate. The feeding plate has multiple feeding holes communicating with the feeding space. Multiple receiving boxes are provided in the feeding space to receive the preforms falling after feeding. Each receiving box communicates with a corresponding feeding hole. The feeding plate has corresponding feeding holes. The guide cylinder has multiple guide channels corresponding to each preform. The lifting plate has punching holes corresponding to each guide cylinder and allowing the guide cylinder to pass through. Each punching hole has multiple punching plates corresponding to each preform. Each punching hole has multiple mounting slots corresponding to each punching plate. Each punching plate is installed in its corresponding mounting slot. Each punching hole has impact bolts on its side. The picking plate is driven by a robotic arm to transfer the injection preform to the top of the punching assembly. Each punching plate in each punching hole is driven by a lifting cylinder to reciprocate twice, punching each preform on the corresponding injection preform on the picking plate up and down. After the picking plate is vibrated by two impacts by the impact bolts, each preform on the injection preform is knocked off. After being knocked off by the punching plates, each preform passes through the corresponding guide channel and falls into the corresponding receiving box.

2. The feeding device for injection molding preforms according to claim 1, characterized in that: Each material-tapping plate is equipped with a material-tapping inclined surface, which is used to guide the rotation of the embryo when the lifting plate is raised and when the material-tapping plate initially contacts the corresponding embryo.

3. The feeding device for injection molding preforms according to claim 2, characterized in that: The guide cylinder includes an outer cylinder, an inner cylinder coaxially arranged with the outer cylinder, and multiple partition plates circumferentially distributed between the outer cylinder and the inner cylinder along the axis of the inner cylinder. The bottom of the outer cylinder is provided with a connecting flange coaxially arranged with the outer cylinder. Each connecting flange is provided with multiple connecting holes, and each connecting hole is equipped with a locking bolt. The feed plate is provided with locking screw holes corresponding to each locking bolt. Each guide cylinder is fixedly connected to the feed plate through the cooperation of each locking bolt and locking screw hole. The lower end of the inner cylinder is provided with a lower guide portion extending towards the outer cylinder in a direction perpendicular to the axis of the inner cylinder. The upper end of the outer cylinder is flush with the upper end of the inner cylinder, and the lower end of the lower guide portion is flush with the lower end of the outer cylinder. The outer cylinder and the inner cylinder are connected by various partition plates, which divide the outer cylinder into multiple guide channels corresponding to each blank. The partition plates extend from the upper end of the outer cylinder to the lower end of the outer cylinder.

4. The feeding device for injection molding preforms according to claim 3, characterized in that: The outer cylinder has a first clearance groove on its side wall to avoid the material tapping plates in each mounting slot. The inner cylinder has a plurality of second clearance grooves on its side wall to avoid the flow channels on each injection blank. The inner cylinder has a positioning part with a plurality of positioning grooves that correspond one-to-one with each flow channel and can position the injection blank by engaging with the flow channel. The first clearance groove and the second clearance groove in each material guide channel are coaxially arranged with the corresponding positioning groove. The upper end of the material guide cylinder is located above the lifting plate when the lifting plate is not raised or lowered.

5. The feeding device for injection molding preforms according to claim 4, characterized in that: The telescopic end of the lifting cylinder is fixed to the lifting plate. Two auxiliary cylinders are arranged opposite each other on the unloading plate. The telescopic ends of the auxiliary cylinders are fixed to the bottom of the lifting plate. Guide posts are provided at each corner of the unloading plate. Lifting guide seats are provided at each corner of the lifting plate, corresponding to each guide post. The lifting guide seat includes a guide cylinder through which the guide post can pass, and a buffer plate located below the guide cylinder and between the lifting plate and the unloading plate. Both the buffer plate and the guide cylinder have through holes through which the guide rod can pass. The lifting plate is slidably connected to the unloading plate by the driving of the lifting cylinder, the driving of each auxiliary cylinder, and the sliding cooperation between the guide cylinder, the buffer plate and the guide post.

6. The feeding device for injection molding preforms according to claim 5, characterized in that: The lifting plate is provided with mounting blocks corresponding to each of the first clearance slots. Each mounting block is provided with an air blowing pipe that can be connected to an air pump. Each air blowing pipe has an air blowing head at its output end. The air blowing head is driven by the air pump to blow air instantaneously at the connection between the blank and the flow channel body when the material is being fed by the material feeding plate.

7. The feeding device for injection-molded preforms according to claim 6, characterized in that: Each receiving box is equipped with a handle.

8. The feeding device for injection molding preforms according to claim 7, characterized in that: The material feeding platform is surrounded by side baffles.

9. A feeding device for injection-molded preforms, characterized in that: The system includes an injection molding machine, a preform feeding device as described in claim 8, and a waste receiving device for receiving the sprue and runner body after feeding the preform. The transfer assembly is mounted on the injection molding machine and includes a transfer bracket fixed to the injection molding machine, a first motor mounted on the transfer bracket, a first movable frame slidably mounted on a movable bracket under the drive of the first motor, a second motor mounted on the first movable frame, a second movable frame slidably mounted on the first movable frame under the drive of the second motor, a third motor mounted on the second movable frame, a lifting frame raised and lowered on the second movable frame under the drive of the third motor, and a flipping assembly located at the lower end of the lifting frame for controlling the flipping of the feeding plate. The moving direction of the first movable frame is perpendicular to the moving direction of the second movable frame, and the lifting direction of the lifting frame is perpendicular to the moving direction of the first movable frame. The movement directions of the lifting frame and the second moving frame are both perpendicular. The flipping assembly includes a drive cylinder, a right-angle connecting plate, and a first rotating seat and a second rotating seat on the right-angle connecting plate. The material taking plate is installed on the right-angle connecting plate. The first rotating seat and the second rotating seat are integrally formed and are respectively set on two panels perpendicular to the right-angle connecting plate. The lower end of the lifting frame is rotatably connected to the first rotating seat. The drive cylinder is rotatably connected to the second rotating seat through a connecting rod. The material taking plate takes out and transfers the injection preform in the injection molding machine through the drive of the first moving frame by the first motor, the drive of the second moving frame by the second motor, and the drive of the lifting frame by the third motor. The material taking plate flips from the vertical state to the horizontal state through the rotatable connection between the lifting frame and the first rotating seat, the drive of the connecting rod by the drive motor, and the rotatable connection between the connecting rod and the second rotating seat.

10. The feeding device for injection-molded preforms according to claim 9, characterized in that: The waste receiving device includes a receiving bracket set on one side of the feeding bracket, a waste box set on the receiving bracket for receiving the injection embryo after the embryo feeding is completed, and a funnel-shaped guide part set above the waste box. The guide part and the waste box are separated. The upper end of the guide part is fixed on the receiving bracket, and the lower end of the guide part extends into the waste box and presses against the upper surface of the waste box. A side handle is provided on the side of the waste box.

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