A feeding device for injection molding of plastic cups
By using a four-axis robotic arm-controlled unloading platform and suction cup grippers, the problem of inconvenient unloading in the "one out of four" production of plastic cup injection molds was solved, enabling orderly unloading and stacking, improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JINFULONG PACKAGING CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-31
AI Technical Summary
When producing four plastic cups using existing injection molds, material unloading is inconvenient, resulting in scattered pieces that occupy a lot of space and require secondary stacking, thus increasing manufacturing costs.
The unloading platform, controlled by a four-axis robotic arm, combined with fixed and movable suction cup frames, moves in three-dimensional space via suction cup grippers to achieve orderly unloading and stacking of plastic cups.
This technology enables neat feeding and stacking of plastic cups, eliminating the need for secondary stacking, thus improving production efficiency and reducing manufacturing costs.
Smart Images
Figure CN224576106U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical equipment technology, and more specifically, it relates to a feeding device for injection molding of plastic cups. Background Technology
[0002] When plastic cups are injection molded, they are usually produced in a "one-out-of-many" manner to improve production efficiency. For "one-out-of-four" (two-by-two rectangular array) plastic cup injection molds, direct ejection and demolding of the product makes unloading the plastic cups convenient, but they are scattered when collected in the storage frame, occupying a large space and requiring secondary stacking, indirectly increasing manufacturing costs and resulting in poor overall performance. Therefore, this utility model proposes a material unloading device for plastic cup injection molding. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a feeding device for injection molding of plastic cups, which has the characteristics of orderly feeding and easy stacking.
[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: This utility model relates to a feeding device for injection molding of plastic cups, comprising a feeding platform and a four-axis robotic arm that controls the movement of the feeding platform in three-dimensional space. The feeding platform is provided with a fixed suction cup frame in an upright U-shape and a movable suction cup frame in an inverted U-shape. The fixed suction cup frame is provided with a first fixed suction cup mounting arm and a second fixed suction cup mounting arm. The movable suction cup frame is provided with a first movable suction cup mounting arm located outside the first and second fixed suction cup mounting arms, and a first movable suction cup mounting arm located outside the first fixed suction cup mounting arm. A second movable suction cup mounting arm is provided between the second fixed suction cup mounting arm and the second fixed suction cup mounting arm. Each of the first fixed suction cup mounting arm, the second fixed suction cup mounting arm, the first movable suction cup mounting arm, and the second movable suction cup mounting arm is provided with a suction cup gripper. All suction cup grippers are arranged on the same structural straight line. The unloading platform is provided with a linear guide rail. A linear slider is slidably connected to the linear guide rail. A movable seat is provided on the linear slider. The movable suction cup is mounted on the movable seat. The length extension direction of the linear guide rail forms a 45° angle with the arrangement direction of the suction cup grippers. The movable suction cup frame is provided with a first linear reciprocating motion mechanism for controlling its movement.
[0005] The present invention is further configured such that: the first linear reciprocating motion mechanism includes a limiting hole opened on the unloading platform, a limiting post slidably connected in the limiting hole, the limiting post being connected to the movable seat, and the first linear reciprocating motion mechanism also includes a first push rod cylinder connected to the limiting post.
[0006] The present invention is further configured such that: the linear guide rail and the linear slider are both located on the front side of the unloading platform; the first push rod cylinder is located on the rear side of the unloading platform.
[0007] The present invention is further configured such that: the suction cup gripper is provided with a curved strip hole extending 90° in the circumferential direction, the curved strip hole is opened on the unloading platform, a curved top piece is slidably connected in the curved strip hole, a linkage plate is provided on the rear side of the unloading platform and a second linear reciprocating motion mechanism for controlling the linkage plate to move closer to or away from the unloading platform, and the rear end of the curved top piece is connected to the linkage plate.
[0008] The present invention is further configured such that: the second linear reciprocating motion mechanism includes a cylinder bracket connected to the unloading platform, and a second push rod cylinder is provided on the cylinder bracket.
[0009] In summary, the present invention has the following beneficial effects: The feeding device for injection molding of plastic cups involved in the present invention uses a suction cup gripper that can move in three-dimensional space to grip the plastic cups that have been injection molded at a fixed point, and then arranges them into a straight line by a mechanism on the feeding platform for neat feeding, or directly stacks them without secondary stacking. The overall function is complete and the practicality is strong. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram from another perspective of the present invention. Detailed Implementation
[0011] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0012] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.
[0013] Example 1 See Figure 1 and Figure 2As shown, this embodiment relates to a feeding device for injection molding of plastic cups, including a feeding platform 1 and a four-axis robotic arm (not shown) for controlling the movement of the feeding platform 1 in three-dimensional space. The feeding platform 1 is provided with a fixed suction cup frame 2 in an upright U-shape and a movable suction cup frame 3 in an inverted U-shape. The fixed suction cup frame 2 is provided with a first fixed suction cup mounting arm 21 and a second fixed suction cup mounting arm 22. The movable suction cup frame 3 is provided with a first movable suction cup mounting arm 31 located outside the first and second fixed suction cup mounting arms and a second movable suction cup mounting arm 32 located between the first and second fixed suction cup mounting arms. The first fixed suction cup mounting arm 21, the second fixed suction cup mounting arm 22, and the first movable suction cup mounting arm 32 are connected together. The mounting arm 31 and the second movable suction cup mounting arm 32 are each provided with a suction cup gripper 4. All suction cup grippers 4 are arranged on the same structural straight line. The unloading platform 1 is provided with a linear guide rail 5. A linear slider 6 is slidably connected to the linear guide rail 5. A movable seat 7 is provided on the linear slider 6. The movable suction cup frame 3 is provided on the movable seat 7. The length extension direction of the linear guide rail 5 forms a 45° angle with the arrangement direction of the suction cup grippers 4. The movable suction cup frame 3 is provided with a first linear reciprocating motion mechanism for controlling movement. The first linear reciprocating motion mechanism includes a limiting hole 8 opened on the unloading platform 1. A limiting post 9 is slidably connected in the limiting hole 8. The limiting post 9 is connected to the movable seat 7. The first linear reciprocating motion mechanism also includes a first push rod cylinder 10 connected to the limiting post.
[0014] Furthermore, the linear guide rail 5 and the linear slider 6 are both located on the front side of the unloading platform 1; the first push rod cylinder 10 is located on the rear side of the unloading platform 1.
[0015] In this embodiment, the first push rod cylinder 10 is in a shortened state in the initial state. At this time, the movable suction cup frame 3 is away from the fixed suction cup frame 2. The four suction cup grippers 4 on the two suction cup frames are arranged in a 2x2 rectangular array. With the help of a four-axis robotic arm that controls the movement, the material unloading platform 1 moves all the suction cup grippers 4 into the mold in the mold opening state, and each suction cup gripper 4 is positioned facing the bottom of the plastic cup to be demolded. After the plastic cup is pushed out to a certain extent, the suction cup grippers 4 perform suction. Then, the four-axis robotic arm controls the suction cup grippers 4 to remove the plastic cup. Then, the first push rod cylinder 10 is operated to drive the moving seat 7 to move, and the movable suction cup frame 3 connected to it follows. After moving to the desired position... Figure 1 As shown, the four plastic cups are in a straight line with equal spacing between adjacent cups. Finally, the four-axis robotic arm controls the suction cup gripper 4 to transfer the plastic cups to the target location. Once the suction cup gripper 4 deflates, the plastic cups can be removed.
[0016] Example 2 See Figure 1 and Figure 2As shown, the feeding device for injection molding of plastic cups involved in this embodiment is further configured based on embodiment 1, wherein the suction cup gripper 4 is provided with a curved strip hole 11 extending 90° in the circumferential direction. The curved strip hole 11 is opened on the feeding platform 1. A curved top piece 12 is slidably connected in the curved strip hole 11. A linkage plate 13 and a second linear reciprocating motion mechanism for controlling the linkage plate to move closer to or away from the feeding platform are provided on the rear side of the feeding platform 1. The second linear reciprocating motion mechanism includes a cylinder bracket 14 connected to the feeding platform 1. A second push rod cylinder 15 is provided on the cylinder bracket 14. The rear end of the curved top piece 12 is connected to the linkage plate 13.
[0017] In this embodiment, the movement of the linkage plate 13 drives the curved top plate 12 to extend and retract, thereby achieving a secondary pushing function. Specifically, the curved top plate 12 is arranged in a circumferential extension around the suction cup gripper 4, which can perform a secondary pushing on the bottom of the plastic cup adsorbed on the suction cup gripper 4, avoiding material unloading failure (the plastic cup is stuck to the suction cup gripper 4 without negative pressure adsorption).
[0018] The present invention relates to a feeding device for injection molding of plastic cups. The feeding device uses a suction cup gripper that can move in three-dimensional space to grip the plastic cups that have been injection molded at a fixed point. Then, the cups are arranged in a straight line by a mechanism on the feeding platform for neat feeding or direct stacking without secondary stacking. The device has complete functions and strong practicality.
[0019] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.
[0020] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0021] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A feeding device for injection molding of plastic cups, comprising a feeding platform and a four-axis robotic arm for controlling the movement of the feeding platform in three-dimensional space, characterized in that: The unloading platform is equipped with a fixed suction cup frame in an upright U-shape and a movable suction cup frame in an inverted U-shape. The fixed suction cup frame has a first fixed suction cup mounting arm and a second fixed suction cup mounting arm. The movable suction cup frame has a first movable suction cup mounting arm located outside the first and second fixed suction cup mounting arms and a second movable suction cup mounting arm located between the first and second fixed suction cup mounting arms. Each of the first, second, first, and second movable suction cup mounting arms has a suction cup gripper. All suction cup grippers are arranged on the same structural straight line. The unloading platform is equipped with a linear guide rail, on which a linear slider is slidably connected. A movable seat is provided on the linear slider, and the movable suction cup is mounted on the movable seat. The length extension direction of the linear guide rail forms a 45° angle with the arrangement direction of the suction cup grippers. The movable suction cup frame is equipped with a first linear reciprocating motion mechanism for controlling movement.
2. The plastic cup injection molding blanking device according to claim 1, characterized in that: The first linear reciprocating motion mechanism includes a limiting hole opened on the unloading platform, a limiting post slidably connected in the limiting hole, the limiting post being connected to the movable seat, and the first linear reciprocating motion mechanism also includes a first push rod cylinder connected to the limiting post.
3. The plastic cup injection molding blanking device according to claim 2, characterized in that: The linear guide rail and linear slider are both located on the front side of the unloading platform; the first push rod cylinder is located on the rear side of the unloading platform.
4. The plastic cup injection molding blanking device according to any one of claims 1-3, characterized in that: The suction cup gripper has a curved hole extending 90° in the circumferential direction. The curved hole is opened on the unloading platform. A curved top piece is slidably connected in the curved hole. The rear side of the unloading platform is provided with a linkage plate and a second linear reciprocating motion mechanism that controls the linkage plate to move closer to or away from the unloading platform. The rear end of the curved top piece is connected to the linkage plate.
5. The plastic cup injection molding blanking device according to claim 4, characterized in that: The second linear reciprocating motion mechanism includes a cylinder bracket connected to the unloading platform, and a second push rod cylinder is provided on the cylinder bracket.