Injection molding machine preform take-off mechanism

Abstract

The utility model relates to the field of bottle embryo injection molding discloses a injection molding machine bottle embryo taking out mechanism, including base, one side of base upper end is equipped with two side vertical boards, and is equipped with the circulation vertical material assembly between the opposite surface of two side vertical boards, the automatic material taking assembly is equipped with the connecting frame in automatic material taking assembly far side from circulation vertical material assembly, another side of connecting frame is equipped with the mechanical hand connecting rod. In the utility model, through the accurate spacing matching design of vertical material rod and material taking groove, the bottle embryo is stably inserted and placed on the connecting cross bar of circulating movement in the mouth vertical nesting mode, forms the arrangement state of single column independent standing, the combination of flexible rubber inner gasket and arc pushboard realizes nondestructive clamping transfer, and the continuous conveying system driven by the rotating chain can make each bottle embryo enter the visual inspection area in fixed array posture in turn, and the staff can directly observe the bottle embryo on the vertical material rod, and handle the defective products and the bottle embryo needing secondary pruning.

Description

Technical Field

[0001] This utility model relates to the field of preform injection molding, and in particular to a preform removal mechanism for injection molding machines. Background Technology

[0002] Injection molding machines for preform production are the main molding equipment used to mold thermoplastic or thermosetting plastics into various shapes of plastic products using plastic molding molds. They are available in vertical, horizontal, and all-electric types. Injection molding machines heat the plastic and apply high pressure to the molten plastic, causing it to be injected and fill the mold cavity. There are generally three main types: plunger type, screw type, and screw pre-plasticized plunger injection type. The most widely used is the screw type. Its function is to heat and plasticize a certain amount of plastic within a specified time in one cycle of the injection molding machine, and then inject the molten plastic into the mold cavity through the screw under certain pressure and speed. After injection, the molten material injected into the mold cavity is kept in a fixed shape.

[0003] The existing injection molding machine completes the injection molding of bottle preforms. After the bottle preforms are removed, they are either placed on a flat surface for re-inspection or directly scattered into a collection box and piled up disorderly. Even when the bottle preforms are placed on a flat surface, because the bottle preforms are plastic products and are relatively light, they will tip over under slight vibration or airflow. After tipping over, the bottle preforms will still pile up disorderly. They need to be picked up one by one for re-inspection and their posture needs to be adjusted in order to trim the tail residue and other defects of the bottle preforms. The operation is cumbersome and inefficient. Utility Model Content

[0004] The technical problem this utility model aims to solve is to provide a preform removal mechanism for injection molding machines. This addresses the issue that after preforms are removed from injection molding machines, they are either placed on a flat surface for re-inspection or left to scatter randomly into a collection box. Even when placed on a flat surface, the preforms, being lightweight plastic products, are easily tipped over by slight vibrations or airflow. After tipping, they still accumulate randomly, requiring manual picking, re-inspection, and adjustment of their position to trim any remaining residue or other defects. This process is cumbersome and inefficient.

[0005] To address the aforementioned problems, this utility model is implemented through the following technical solution.

[0006] A preform removal mechanism for an injection molding machine includes: a base, two side plates on one side of the upper end of the base, and a circulating material-standing assembly between the opposite surfaces of the two side plates. The circulating material-standing assembly includes a motor, a rotating shaft, a first rotating shaft, a bearing bracket, a second rotating shaft, a rotating chain, a connecting crossbar, and a material-standing rod. The driving end of the motor is provided with a rotating shaft, and the end of the motor away from the rotating shaft is welded and fixed to one side of the side plate. The end of the rotating shaft away from the motor is provided with the first rotating shaft. An automatic material-picking assembly is provided above the circulating material-standing assembly, and a connecting frame is provided on the side of the automatic material-picking assembly away from the circulating material-standing assembly. A robotic arm connecting rod is provided on the other side of the connecting frame.

[0007] In one embodiment, rotating chains are symmetrically provided at both ends of the outer side of the first rotating shaft, and a second rotating shaft is provided on the inner side of the rotating chains away from the first rotating shaft. Bearing brackets are provided at both ends of the second rotating shaft, and the bottom of the bearing brackets is welded and fixed to the upper end of the base.

[0008] In one embodiment, two rotating chains are provided, and connecting crossbars are provided at equal lateral intervals between the two rotating chains. A vertical support bar is provided at equal lateral intervals on one side of the connecting crossbar corresponding to the automatic material handling component.

[0009] In one embodiment, the automatic material handling assembly includes a base plate frame, a hydraulic cylinder, a piston rod, a connecting horizontal plate, a material handling block, a reserved through hole, a material handling groove, an inner washer, an arc-shaped push plate, a connecting gasket, and a connecting rod. The hydraulic cylinder is provided on one side of the upper end of the base plate frame, and the driving end of the hydraulic cylinder is provided with a piston rod. The connecting horizontal plates are provided at equal intervals on the outer side of the piston rod. The connecting horizontal plates form a telescopic linkage structure with the hydraulic cylinder through the piston rod.

[0010] In one embodiment, the connecting plate is provided with at least six connecting rods at equal intervals on the side away from the hydraulic cylinder, and the material taking block is provided with at least six material taking slots at equal intervals on the side corresponding to the positions of the connecting rods. An inner washer is bonded and fixed to the inner side of the material taking slot. An arc-shaped push plate is provided at one end of the connecting rod that passes through the material taking block and extends into the material taking slot, and a connecting gasket is bonded and fixed to the inner arc side of the arc-shaped push plate.

[0011] In one embodiment, the connecting horizontal plate, the material taking block, the reserved through hole, the material taking groove, the inner washer, the arc-shaped push plate, the connecting gasket and the connecting rod are provided in at least four sets at equal intervals along the piston rod.

[0012] In one embodiment, a pre-reserved through hole is provided inside the material receiving block for the piston rod to pass through. The piston rod is fixedly connected to the connecting horizontal plate, and there are at least two sets of hydraulic cylinders and piston rods.

[0013] In one embodiment, the distance between the plurality of material picking blocks coincides with the distance between the plurality of connecting crossbars, and the distance between the plurality of vertical material bars at the upper end of the connecting crossbars coincides with the distance between the plurality of material picking slots.

[0014] This invention provides a preform removal mechanism for injection molding machines. Compared with the prior art, it has the following advantages: Through the precise spacing matching design of the upright rod and the feeding trough, the preforms are stably inserted into the circulating connecting crossbar in a vertical nesting manner at the mouth, forming a single row of independent standing arrangement. The combination of flexible rubber inner gasket and arc-shaped push plate realizes non-destructive clamping and transfer. Combined with the continuous conveying system driven by the rotating chain, each preform can enter the visual inspection area in a fixed array posture in sequence. The staff can intuitively observe the preforms on the upright rod and process defective products and preforms that need secondary trimming. It supports a seamless automated re-inspection process, which significantly improves the quality inspection efficiency and the accuracy of yield control. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall three-dimensional structure of the preform removal mechanism of the injection molding machine.

[0016] Figure 2 is a schematic diagram of the base and circulating material assembly of the preform removal mechanism of the injection molding machine.

[0017] Figure 3 is a schematic diagram of the automatic material handling component of the preform removal mechanism in an injection molding machine.

[0018] Figure 4 is an enlarged schematic diagram of the preform removal mechanism of the injection molding machine at point A in Figure 3.

[0019] The attached figures are labeled as follows: 1. Base; 2. Side plate; 3. Circulating material-standing assembly; 301. Motor; 302. Rotating shaft; 303. First rotating shaft; 304. Bearing bracket; 305. Second rotating shaft; 306. Rotating chain; 307. Connecting crossbar; 308. Material-standing rod; 4. Automatic material-picking assembly; 401. Base plate frame; 402. Hydraulic cylinder; 403. Piston rod; 404. Connecting crossbar; 405. Material-picking block; 406. Reserved through hole; 407. Material-picking groove; 408. Inner washer; 409. Arc-shaped push plate; 410. Connecting gasket; 411. Connecting rod; 5. Connecting frame; 6. Robot arm linkage. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0021] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0022] Refer to Figure 1- Figure 4 A preform removal mechanism for an injection molding machine includes: a base 1, two side plates 2 on one side of the upper end of the base 1, and a circulating material-lifting assembly 3 between the opposite surfaces of the two side plates 2. The circulating material-lifting assembly 3 includes a motor 301, a rotating shaft 302, a first rotating shaft 303, a bearing bracket 304, a second rotating shaft 305, a rotating chain 306, a connecting crossbar 307, and a material-lifting rod 308. The driving end of the motor 301 is provided with the rotating shaft 302. The end of the motor 301 away from the rotating shaft 302 is welded and fixed to one side of the side plate 2. The end of the rotating shaft 302 away from the motor 301 is provided with the first rotating shaft 303. An automatic material-lifting assembly 4 is provided above the circulating material-lifting assembly 3, and a connecting frame 5 is provided on the side of the automatic material-lifting assembly 4 away from the circulating material-lifting assembly 3. A robotic arm connecting rod 6 is provided on the other side of the connecting frame 5.

[0023] The outer ends of the first rotating shaft 303 are symmetrically provided with rotating chains 306, and the inner side of the rotating chain 306 away from the first rotating shaft 303 is provided with a second rotating shaft 305. The two ends of the second rotating shaft 305 are provided with bearing brackets 304, and the bottom of the bearing brackets 304 is welded and fixed to the upper end of the base 1.

[0024] There are two rotating chains 306, and connecting crossbars 307 are provided at equal intervals in the lateral direction between the two rotating chains 306. The connecting crossbars 307 are provided at equal intervals in the lateral direction on one side of the automatic material handling component 4.

[0025] The automatic material handling assembly 4 includes a base plate frame 401, a hydraulic cylinder 402, a piston rod 403, a connecting horizontal plate 404, a material handling block 405, a reserved through hole 406, a material handling groove 407, an inner washer 408, an arc-shaped push plate 409, a connecting gasket 410, and a connecting rod 411. The hydraulic cylinder 402 is provided on one side of the upper end of the base plate frame 401, and the driving end of the hydraulic cylinder 402 is provided with a piston rod 403. The connecting horizontal plate 404 is provided at equal intervals on the outer side of the piston rod 403. The connecting horizontal plate 404 and the hydraulic cylinder 402 form a telescopic linkage structure through the piston rod 403.

[0026] The connecting plate 404 has at least six connecting rods 411 equidistantly arranged on the side away from the hydraulic cylinder 402. The material taking block 405 has at least six material taking slots 407 equidistantly arranged on the side corresponding to the connecting rods 411. An inner washer 408 is bonded and fixed inside the material taking slot 407. The connecting rod 411 passes through the material taking block 405 and extends into the material taking slot 407. An arc-shaped push plate 409 is provided at one end, and a connecting gasket 410 is bonded and fixed on the inner arc side of the arc-shaped push plate 409.

[0027] The connecting horizontal plate 404, the material taking block 405, the reserved through hole 406, the material taking groove 407, the inner washer 408, the arc-shaped push plate 409, the connecting gasket 410 and the connecting rod 411 are provided at least four sets at equal intervals along the piston rod 403.

[0028] The material taking block 405 has a reserved through hole 406 inside, which is used for the piston rod 403 to pass through. The piston rod 403 is fixedly connected to the connecting horizontal plate 404. There are no less than two sets of hydraulic cylinder 402 and piston rod 403.

[0029] The distance between multiple material picking blocks 405 matches the distance between multiple connecting crossbars 307, and the distance between multiple vertical material bars 308 at the upper end of the connecting crossbars 307 matches the distance between multiple material picking slots 407.

[0030] During use, firstly, the robotic arm linkage 6 at the upper end of the connecting frame 5 is connected to the robotic arm. Two side plates 2 are provided on one side of the upper end of the base 1, and a circulating material-lifting assembly 3 is provided between the opposite surfaces of the two side plates 2. An automatic material-picking assembly 4 is located above the circulating material-lifting assembly 3. The hydraulic cylinder 402 on one side of the upper end of the base plate frame 401 is activated, driving the piston rod 403 to extend, causing the connecting horizontal plate 404 and connecting rod 411 to move towards the material-picking block 405. The connecting horizontal plate 404 pushes the arc-shaped push plate 409 forward, which can push the preform slightly against the inner wall of the picking groove 407. The inner gasket 408 on the inner side of the picking groove 407 and the connecting gasket 410 on one side of the arc-shaped push plate 409 contact the preform. Both the inner gasket 408 and the connecting gasket 410 are made of rubber to avoid damaging the preform. The material-picking block 405... An internal through-hole 406 is provided for the piston rod 403 to pass through. At least four sets of material-grabbing blocks 405 are provided to simultaneously grip multiple preforms. After multiple preforms are gripped, the preform opening is aligned with the vertical rod 308 at the upper end of the connecting crossbar 307 and inserted. The hydraulic cylinder 402 is activated again, driving the piston rod 403 to retract, which in turn retracts the connecting crossbar 404 and the connecting rod 411. The connecting crossbar 404 pulls the arc-shaped push plate 409 backward, separating it from the preform. The preform can then be inserted longitudinally onto the vertical rod 308. At this point, the preforms on the vertical rod 308 can be directly observed. Defective preforms and those requiring secondary trimming are processed. After processing, the motor 301 is activated, driving the rotating shaft 302 to rotate. The rotation of the rotating shaft 302 drives the first rotating shaft 303 to rotate. The rotation drives the rotating chain 306 to rotate, and the rotation of the rotating chain 306 drives the second rotating shaft 305 to rotate inside the bearing bracket 304. The rotating chain 306 rotates stably, driving the connecting crossbar 307 to move forward. The connecting crossbar 307 moves forward until the upright bar 308 pours out the bottle preform laterally, thus completing the unloading of the bottle preform.

[0031] Therefore, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the above disclosure, and it should be understood that in some cases, certain features of the present invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the present invention. The present invention is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode of carrying out the present invention, but the present invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present invention will be determined only by the appended claims.

Claims

1. A preform removal mechanism for an injection molding machine, characterized in that, include: The base (1) has two side plates (2) on one side of its upper end, and a circulating material support assembly (3) is provided between the opposite surfaces of the two side plates (2). The circulating material support assembly (3) includes a motor (301), a rotating shaft (302), a first rotating shaft (303), a bearing frame (304), a second rotating shaft (305), a rotating chain (306), a connecting crossbar (307), and a material support rod (308). The driving end of the motor (301) is provided with a rotating shaft (302). The end of the motor (301) away from the rotating shaft (302) is welded and fixed to one side of the side plate (2). The end of the rotating shaft (302) away from the motor (301) is provided with a first rotating shaft (303). An automatic material handling assembly (4) is provided above the circulating material support assembly (3), and a connecting frame (5) is provided on the side of the automatic material handling assembly (4) away from the circulating material support assembly (3). A robotic arm connecting rod (6) is provided on the other side of the connecting frame (5).

2. The preform removal mechanism for an injection molding machine according to claim 1, characterized in that, The first rotating shaft (303) has symmetrical rotating chains (306) at both ends of its outer side, and a second rotating shaft (305) is provided on the inner side of the rotating chain (306) away from the first rotating shaft (303). The second rotating shaft (305) has bearing brackets (304) at both ends, and the bottom of the bearing brackets (304) is welded and fixed to the upper end of the base (1).

3. The preform removal mechanism for an injection molding machine according to claim 2, characterized in that, Two rotating chains (306) are provided, and connecting crossbars (307) are provided at equal intervals in the lateral direction between the two rotating chains (306). A standing rod (308) is provided at equal intervals in the lateral direction on one side of the connecting crossbar (307) corresponding to the automatic material handling component (4).

4. The preform removal mechanism for an injection molding machine according to claim 1, characterized in that, The automatic material handling component (4) includes a base plate frame (401), a hydraulic cylinder (402), a piston rod (403), a connecting horizontal plate (404), a material handling block (405), a reserved through hole (406), a material handling groove (407), an inner washer (408), an arc-shaped push plate (409), a connecting gasket (410), and a connecting rod (411). The base plate frame (401) is provided with a hydraulic cylinder (402) on one side of its upper end, and the driving end of the hydraulic cylinder (402) is provided with a piston rod (403). The connecting horizontal plate (404) is provided at equal intervals on the outer side of the piston rod (403). The connecting horizontal plate (404) forms a telescopic linkage structure with the hydraulic cylinder (402) through the piston rod (403).

5. The preform removal mechanism for an injection molding machine according to claim 4, characterized in that, The connecting plate (404) is provided with at least six connecting rods (411) at equal intervals on the side away from the hydraulic cylinder (402). The material taking block (405) is provided with at least six material taking slots (407) at equal intervals on the side corresponding to the connecting rods (411). An inner washer (408) is bonded and fixed to the inner side of the material taking slot (407). The connecting rod (411) passes through the material taking block (405) and extends into the material taking slot (407). An arc-shaped push plate (409) is provided at one end, and a connecting gasket (410) is bonded and fixed to the inner arc side of the arc-shaped push plate (409).

6. The preform removal mechanism for an injection molding machine according to claim 5, characterized in that, The connecting horizontal plate (404), the material taking block (405), the reserved through hole (406), the material taking groove (407), the inner washer (408), the arc-shaped push plate (409), the connecting gasket (410) and the connecting rod (411) are provided at least four sets at equal intervals along the piston rod (403).

7. A preform removal mechanism for an injection molding machine according to claim 6, characterized in that, The material taking block (405) has a reserved through hole (406) inside, which is used for the piston rod (403) to pass through. The piston rod (403) is fixedly connected to the connecting horizontal plate (404). There are no less than two sets of hydraulic cylinder (402) and piston rod (403).

8. A preform removal mechanism for an injection molding machine according to claim 7, characterized in that, The distance between the multiple material picking blocks (405) matches the distance between the multiple connecting crossbars (307), and the distance between the multiple vertical material bars (308) at the upper end of the connecting crossbars (307) matches the distance between the multiple material picking grooves (407).

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