Plastic bag release mechanism
By setting a first gap on the robotic arm and cooperating with the telescopic mechanism, the plastic bags can be directly dropped into the receiving part, which solves the complex and costly problem of plastic bag conveying in the prior art, improves efficiency and avoids bags from scattering due to improper clamping.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 嘉兴海强机械科技有限公司
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-14
Smart Images

Figure CN224493201U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic bag processing, and in particular to a plastic bag detachment mechanism. Background Technology
[0002] In the field of plastic bag folding, after the plastic bag is folded, it needs to be transported to the subsequent receiving and packaging line. In a typical production line, a robotic arm first pulls the plastic bag onto a folding plate, which then folds the bag. Finally, an additional robotic arm is set up on the rear storage plate to clamp and drag the folded plastic bag back onto the receiving plate. This process is complex and costly. Furthermore, when using a clamping mechanism for dragging, the clamping mechanisms on both sides clamp the plastic bag and the substrate simultaneously. When the plastic bag is thick, the clamping effect is poor. When dragging after clamping, the plastic bag close to the substrate cannot be dragged away due to excessive clamping, causing the plastic bag to unravel and affecting the clamping effect. Plastic bags folded by a robotic arm are even more difficult to clamp, resulting in poor performance. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a plastic bag detachment mechanism in response to the above-mentioned technical deficiencies. The mechanism uses a first gap preset in the middle of the robotic arm to cooperate with a telescopic mechanism. After the plastic bag is folded on the robotic arm, it can be moved directly backward by the robotic arm to the upper side of the receiving part. The telescopic end of the telescopic mechanism extends into the first gap. When the robotic arm retracts, the plastic bag will be blocked and fall onto the receiving part, thus saving work efficiency.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a robotic arm that reciprocates on a frame is included; a receiving part with an upper receiving plane is provided on one side of the robotic arm in the direction of movement; a base plate is provided on the robotic arm in the direction of movement toward the receiving part; a first gap is provided on the base plate perpendicular to the direction of movement; a telescopic mechanism is also provided on the frame; the telescopic end of the telescopic mechanism extends into the first gap.
[0005] To further optimize this technical solution, an opening is provided on the side of the first gap facing the receiving part.
[0006] To further optimize this technical solution, the telescopic mechanism is a telescopic cylinder; the fixed end of the telescopic cylinder is mounted on the frame, and the telescopic end is installed facing the first gap; a blocking body is provided on the telescopic end extending into the first gap.
[0007] To further optimize this technical solution, the telescopic mechanism is installed on the movement path of the robotic arm outside the receiving part.
[0008] To further optimize this technical solution, the receiving part is a conveyor belt in a cyclic motion, and the upper receiving plane is set lower than the substrate.
[0009] To further optimize this technical solution, the robotic arm is provided with folding plates on both sides below the substrate, which move perpendicular to the direction of the robotic arm's movement; a second gap corresponding to the first gap is provided between the two folding plates.
[0010] To further optimize this technical solution, the upper receiving plane of the receiving part is set lower than that of the folding plate.
[0011] Compared with the prior art, the present invention has the following advantages: by setting a base plate with an opening on the receiving part of the robotic arm, this structure effectively ensures that when the robotic arm moves to the upper side of the receiving part, the telescopic end of the telescopic mechanism cooperates with the first gap to leave the plastic bag on the receiving part, saving the cost of setting up an additional robotic arm gripper, and improving work efficiency.
[0012] At the same time, it avoids the problem of plastic bags becoming too tightly squeezed and unable to be held when being clamped and dragged. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of the plastic bag detachment mechanism.
[0014] Figure 2 This is a partial structural diagram of the plastic bag detachment mechanism.
[0015] Figure 3 This is a schematic diagram of the plastic bag detachment mechanism during operation.
[0016] Figure 4 This is a side view of the plastic bag detachment mechanism.
[0017] In the diagram: 1. Robotic arm; 2. Receiving part; 3. Base plate; 4. First gap; 5. Telescopic mechanism; 6. Opening; 7. Frame; 8. Folding plate; 9. Second gap; 10. Plastic bag. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0019] Detailed implementation method: combined with Figure 1-4As shown, the plastic bag detachment mechanism includes a robotic arm 1 that reciprocates on a frame 7; a receiving portion 2 with an upper receiving plane is provided on one side of the robotic arm 1 in the direction of movement; a base plate 3 is provided on the robotic arm 1 facing the receiving portion 2 along the direction of movement; a first gap 4 is provided on the base plate 3 perpendicular to the direction of movement; a telescopic mechanism 5 is also provided on the frame 7; the telescopic end of the telescopic mechanism 5 extends into the first gap 4; an opening 6 is provided on the side of the first gap 4 facing the receiving portion 2; the telescopic mechanism 5 is a telescopic cylinder; the fixed end of the telescopic cylinder is mounted on... On the frame 7, the telescopic end is installed facing the first gap 4; the telescopic end extends into the first gap 4 and is provided with a blocking body; the telescopic mechanism 5 is installed on the movement path of the robot arm 1 outside the receiving part 2; the receiving part 2 is a conveyor belt in a circular motion, and the upper receiving plane is set lower than the base plate 3; the robot arm 1 is provided with folding plates 8 on both sides below the base plate 3, which move perpendicular to the movement direction of the robot arm 1; a second gap 9 corresponding to the first gap 4 is provided between the two folding plates 8; when the folding plates 8 are provided on the robot arm 1, the upper receiving plane of the receiving part 2 is set lower than the folding plates 8.
[0020] When using, combine Figure 1-4 As shown, the base plate 3 of the robotic arm 1 is positioned facing the opening 6 of the receiving part 2. After the plastic bag 10 is placed on the robotic arm 1 by other devices, the plastic bag 10 is folded in half by the folding plate 8 on the lower side of the base plate 3 of the robotic arm 1. The folding plate 8 can be driven by a cylinder or motor to rotate the circulating belt to achieve folding on both sides, thus realizing the folding of the plastic bag 10. The movement process of the folding plate 8 is a structure well known to those skilled in the art. After folding, the robotic arm 1 moves to the upper side of the receiving part 2. At this time, the telescopic part of the telescopic mechanism 5 extends towards the first gap 4, so that the rear side of the plastic bag 10 on the robotic arm 1 is... When the robotic arm 1 retracts, the plastic bag 10 is blocked by the telescopic part of the telescopic mechanism 5, and will not fall onto the receiving plate as the robotic arm 1 retracts. The movement of the robotic arm 1 can be driven by a cylinder or a circulating belt. At the same time, since there is a second gap 9 between the two folding plates 8 corresponding to the first gap 4, the plastic bag 10 on the lower folding part can be blocked at the same time, so as to achieve a better blocking effect on the plastic bag 10. When the robotic arm 1 retracts, the telescopic end of the telescopic mechanism 5 retracts to avoid blocking the conveying path of the plastic bag 10 when the robotic arm 1 moves toward the receiving part 2.
[0021] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A plastic bag release mechanism, comprising a robotic arm (1) reciprocating on a frame (7); characterized in that: A receiving part (2) with an upper receiving plane is provided on one side of the movement direction of the robot (1); a base plate (3) is provided on the robot (1) along the movement direction of the robot (1) towards the receiving part (2); a first gap (4) is provided on the base plate (3) perpendicular to the movement direction; a telescopic mechanism (5) is also provided on the frame (7); the telescopic end of the telescopic mechanism (5) extends into the first gap (4).
2. The plastic bag detachment mechanism according to claim 1, characterized in that: The first gap (4) has an opening (6) on the side facing the receiving part (2).
3. The plastic bag detachment mechanism according to claim 2, characterized in that: The telescopic mechanism (5) is a telescopic cylinder; the fixed end of the telescopic cylinder is installed on the frame (7), and the telescopic end is installed facing the first gap (4); the telescopic end extends into the first gap (4) and is provided with a blocking body.
4. The plastic bag detachment mechanism according to claim 3, characterized in that: The telescopic mechanism (5) is installed on the movement path of the robotic arm (1) outside the receiving part (2).
5. The plastic bag detachment mechanism according to claim 1, characterized in that: The receiving part (2) is a conveyor belt that moves in a cycle, and the upper receiving plane is set lower than the substrate (3).
6. The plastic bag detachment mechanism according to claim 1, characterized in that: The robotic arm (1) is provided with folding plates (8) on both sides below the base plate (3) and moving in a direction perpendicular to the movement of the robotic arm (1); a second gap (9) corresponding to the first gap (4) is provided between the two folding plates (8).
7. The plastic bag detachment mechanism according to claim 6, characterized in that: The upper receiving plane of the receiving part (2) is set lower than the folding plate (8).