Clamping jaw suitable for wide-range packaging specifications

Abstract

The utility model belongs to the technical field of material conveying, and particularly relates to a clamping jaw suitable for wide-range packaging specifications, which comprises a connecting frame, a connecting flange is fixedly assembled and connected to the middle of the connecting frame, a mounting plate is assembled and connected to the lower side of the connecting flange, and two groups of symmetrically arranged clamping jaw components are assembled and connected to the lower side of the connecting frame. The clamping jaw assembly comprises two clamping jaw parts, the two clamping jaw parts are assembled and connected with a distance changing mechanism, the distance changing mechanism is used for adjusting the distance between the two clamping jaw parts, the upper sides of the clamping jaw parts are assembled and connected with a clamping mechanism, and the clamping mechanism is used for controlling opening and closing of the clamping jaw parts; according to the utility model, the stacking efficiency can be effectively improved; the double clamping jaws can grab two packaging bags at the same time, the reciprocating frequency of the mechanical arm is reduced, the single-time stacking circulation time is shortened, and the mechanical arm is particularly suitable for high-speed production lines or high-density goods processing scenes.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying technology, specifically relating to a gripper that adapts to a wide range of packaging specifications. Background Technology

[0002] A gripper is a mechanical device primarily used for grasping, securing, or transporting objects, commonly found in automated equipment and industrial robots. Its core function is to simulate the gripping motion of human fingers, achieving precise control over objects through mechanical structures or drive mechanisms.

[0003] Existing grippers typically use pneumatic devices to control the opening and closing of the grippers to pick up materials. However, existing grippers are usually single-gripper designs. The traditional palletizing speed of one robot equipped with one gripper can no longer keep up with the production pace. Equipping two robots requires additional palletizing pallet storage, robots, and work areas, which would result in huge waste from many aspects such as economy, space, and energy consumption. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a gripper that can adapt to a wide range of packaging specifications, so as to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A gripper adaptable to a wide range of packaging sizes includes a connecting frame, a connecting flange fixedly connected to the middle of the connecting frame, a mounting plate connected to the lower side of the connecting flange, and two sets of symmetrically arranged gripper assemblies connected to the lower side of the connecting frame. Each gripper assembly includes two gripper portions, and a pitch-changing mechanism is connected to the two gripper portions for adjusting the distance between the two gripper portions. A clamping mechanism is connected to the upper side of each gripper portion for controlling the opening and closing of the gripper portions.

[0007] Further specifying, the variable pitch mechanism includes a gear, with a rack meshing and drivingly connected to both sides of the gear, a connecting member assembled and connected between the rack and the gripper, the clamping mechanism and the connecting member moving synchronously, the connecting member being connected to a guide mechanism, and a speed reducer drivingly connected to the lower side of the gear.

[0008] Further specifying, the gripper portion includes a connecting plate, with multiple hooks evenly connected laterally on one side of the connecting plate, and a rocker arm fixedly connected to the other side of the connecting plate. A rotating shaft is assembled and connected to the upper part of the rocker arm, and the rotating shaft is assembled and connected to the clamping mechanism.

[0009] Further specifying, the clamping mechanism includes a crank handle, the lower part of which is fixedly connected to a rotating shaft, and the upper part of which is connected to a second telescopic cylinder. The upper part of the crank handle is hinged to the output shaft of the second telescopic cylinder, and the second telescopic cylinder is assembled and connected to a connecting piece.

[0010] Further specifying, the inner side of the connector is fixedly connected to a clamping mechanism, the clamping mechanism including a telescopic cylinder, and the output shaft of the telescopic cylinder is assembled and connected to a pressure plate.

[0011] Further specifying, the guiding mechanism includes a guide rail located on the lower side of the mounting plate, and a slider is fixedly connected to the upper side of the connector, the slider being slidably connected to the guide rail.

[0012] Furthermore, the connector is equipped with a hydraulic damper, and when the crank handle reaches its maximum opening, the working end of the hydraulic damper contacts the crank handle.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention can effectively improve palletizing efficiency; the dual grippers can grab two packaging bags at the same time, reducing the number of times the robotic arm goes back and forth and shortening the single palletizing cycle time, making it especially suitable for high-speed production lines or high-density cargo handling scenarios.

[0015] This invention has the ability to adapt to multiple specifications. Both grippers are variable-pitch grippers, which can quantitatively adjust the width of the bag being gripped, ranging from 300mm to 600mm, to accommodate most packaging bag specifications on the market. By adjusting the distance between the two grippers, the contradiction between different specifications of packaging bags and the gripper's clamping range can be resolved. At the same time, when the product size of a production order changes, there is no need to stop the machine to replace the grippers, effectively improving production efficiency.

[0016] This invention features a redundant safety design; if one gripper fails, the other gripper can still independently complete the emergency handling, avoiding downtime of the entire production line; at the same time, the simultaneous application of force by the two grippers can reduce the load pressure on a single gripper and extend the equipment's lifespan. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of the structure of a gripper that adapts to a wide range of packaging specifications according to this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of a set of grippers according to the present invention;

[0020] Figure 3 This is a schematic diagram of the upper side of the gripper assembly of this utility model;

[0021] Figure 4 This is a side view of the gripper assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the lower structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the usage state of this utility model;

[0024] The symbols for the main components are explained below:

[0025] Connecting bracket 1, connecting flange 2, mounting plate 21;

[0026] Gripper assembly 3, gripper part 31, connecting plate 311, hook 312, rocker arm 313, rotating shaft 314, pitch changing mechanism 32, gear 321, rack 322, connector 323, reducer 324;

[0027] Clamping mechanism 4, crank handle 41, first telescopic cylinder 42;

[0028] Clamping mechanism 5, second telescopic cylinder 51, pressure plate 52;

[0029] Guide mechanism 6, guide rail 61, slider 62;

[0030] Hydraulic buffer 7. Detailed Implementation

[0031] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains; the terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0033] like Figure 1-6As shown, a gripper adaptable to a wide range of packaging specifications includes a connecting frame 1. A connecting flange 2 is fixedly connected to the middle of the connecting frame 1. A mounting plate 21 is connected to the lower side of the connecting flange 2. Two sets of symmetrically arranged gripper assemblies 3 are connected to the lower side of the connecting frame 1. Each gripper assembly 3 includes two gripper parts 31. A pitch-changing mechanism 32 is connected to the two gripper parts 31. The pitch-changing mechanism 32 is used to adjust the distance between the two gripper parts 31. A clamping mechanism 4 is connected to the upper side of the gripper parts 31. The clamping mechanism 4 is used to control the opening and closing of the gripper parts 31.

[0034] In this embodiment, the connecting flange 2 is used to connect with the robot. The robot moves the connecting flange 2, thereby moving the gripper and performing palletizing operations on the materials. The mounting plate 21 is used to assemble the gripper assembly 3. Two sets of gripper assemblies 3 are provided, which can simultaneously grip two packaging bags, reducing the number of times the robotic arm travels back and forth and shortening the single palletizing cycle time. This is especially suitable for high-speed production lines or high-density cargo handling scenarios. If one gripper assembly 3 fails, the other gripper can still independently complete emergency handling, avoiding downtime of the entire production line. The simultaneous force application of the dual grippers can reduce the load pressure of a single gripper and extend the equipment life. Both gripper parts 31 are provided with a pitch-changing mechanism 32. By adjusting the pitch-changing mechanism 32, the width of the bag can be quantitatively adjusted, with a width range of 300mm-600mm. It can also grip heavy objects of different weights, adapting to the gripping of most packaging bags in the market. The clamping mechanism 4 is used to control the opening and closing of the gripper parts 31 to achieve material clamping.

[0035] Reference Figure 3 and Figure 5 The variable pitch mechanism 32 includes a gear 321, with racks 322 meshing and driving on both sides of the gear 321. A connecting member 323 is assembled and connected between the racks 322 and the grippers. The clamping mechanism 4 moves synchronously with the connecting member 323. The connecting member 323 is connected to a guide mechanism 6, and a reducer 324 is driven and connected to the lower side of the gear 321. In this embodiment, when the gear 321 rotates, it drives the racks 322 on both sides to move. The connecting member 323 is used to transmit the movement of the racks 322 to the grippers. The reducer 324 controls the number of rotations of the gear 321, so that the two racks 322 move synchronously in two directions, driving the grippers to move, thereby adjusting the distance between the two grippers to adapt to the gripping of materials of different specifications. When the size of the produced material packaging bag changes, there is no need to replace the grippers. The connecting member 323 moves along a fixed route through the setting of the guide mechanism 6.

[0036] Reference Figure 3-4The gripper part 31 includes a connecting plate 311. Multiple hooks 312 are evenly connected laterally to one side of the connecting plate 311, and a rocker arm 313 is fixedly connected to the other side of the connecting plate 311. A rotating shaft 314 is mounted and connected to the upper part of the rocker arm 313, and the rotating shaft 314 is assembled and connected to the clamping mechanism 4. In this embodiment, the connecting plate 311 is used to simultaneously connect multiple hooks 312. When the rotating shaft 314 rotates, it drives the rocker arm 313 to rotate, thereby opening and closing the connecting plate 311 under the drive of the rocker arm 313; the rotating shaft 314 is rotated by the clamping mechanism 4. The rotating shaft 314 is rotatably connected to the connecting member 323.

[0037] Reference Figure 3 The clamping mechanism 4 includes a crank handle 41, the lower part of which is fixedly connected to a rotating shaft 314, and the upper part of which is connected to a first telescopic cylinder 42. The upper part of the crank handle 41 is hinged to the output shaft of the first telescopic cylinder 42, and the first telescopic cylinder 42 is assembled and connected to a connecting piece 323. In this embodiment, the crank handle 41 and the rotating shaft 314 rotate synchronously. When the output end of the first telescopic cylinder 42 extends, it drives the upper end of the crank handle 41 to move inward. The crank handle 41 drives the rotating shaft 314 to rotate. After the rotating shaft 314 rotates, it drives the rocker arm 313 to swing. By controlling the operation of the first telescopic cylinder 42, the opening and closing of the gripper is controlled.

[0038] Reference Figure 2 and Figure 5 A clamping mechanism 5 is fixedly connected to the inner side of the connector 323. The clamping mechanism 5 includes a second telescopic cylinder 51, and a pressure plate 52 is assembled and connected to the output shaft of the second telescopic cylinder 51. In this embodiment, when the gripper 31 clamps the material, the second telescopic cylinder 51 controls the pressure plate 52 to move downward to fix the upper side of the material, thereby preventing relative movement between the material and the gripper 31 during the movement of the gripper. When the gripper clamps the packaging bag, the second telescopic cylinder 51 extends, and the pressure plate 52 presses down on the upper surface of the packaging bag, working together with the lower surface of the gripper to clamp the packaging bag and prevent the packaging bag from falling off during the stacking process. The second telescopic cylinder 51 is preferably a cylinder.

[0039] Reference Figure 3-4 The guiding mechanism 6 includes a guide rail 61 located on the lower side of the mounting plate 21, and a slider 62 fixedly connected to the upper side of the connector 323. The slider 62 is slidably connected to the guide rail 61. In this embodiment, the slider 62 slides along the guide rail 61, and the guide rail 61 restricts the movement direction of the slider 62, so that the gripper moves in the horizontal direction.

[0040] Reference Figure 5The connector 323 is equipped with a hydraulic damper 7. When the crank handle 41 reaches its maximum opening, the working end of the hydraulic damper 7 contacts the crank handle 41. In this embodiment, the hydraulic damper 7 is used to absorb impact force, protect the equipment, and play a role in buffering impact, reducing vibration, protecting the equipment, and improving stability. The working end of the hydraulic damper 7 contacts the side of the crank handle 41, thereby reducing the impact on the crank handle 41 when it rises to the highest position.

[0041] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0042] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A gripper adaptable to a wide range of packaging sizes, comprising a connecting frame (1), characterized in that: A connecting flange (2) is fixedly connected to the middle of the connecting frame (1). A mounting plate (21) is connected to the lower side of the connecting flange (2). Two sets of symmetrically arranged gripper assemblies (3) are connected to the lower side of the connecting frame (1). Each gripper assembly (3) includes two gripper parts (31). A pitch-changing mechanism (32) is connected to the two gripper parts (31). The pitch-changing mechanism (32) is used to adjust the distance between the two gripper parts (31). A clamping mechanism (4) is connected to the upper side of each gripper part (31). The clamping mechanism (4) is used to control the opening and closing of the gripper parts (31).

2. The gripper adaptable to a wide range of packaging sizes according to claim 1, characterized in that: The variable pitch mechanism (32) includes a gear (321), and a rack (322) is meshed and driven on both sides of the gear (321). A connecting member (323) is assembled and connected between the rack (322) and the gripper. The clamping mechanism (4) moves synchronously with the connecting member (323). The connecting member (323) is connected to a guide mechanism (6). A reducer (324) is driven and connected to the lower side of the gear (321).

3. The gripper adaptable to a wide range of packaging sizes according to claim 1, characterized in that: The gripper part (31) includes a connecting plate (311). A plurality of hooks (312) are evenly connected laterally on one side of the connecting plate (311). A rocker arm (313) is fixedly connected to the other side of the connecting plate (311). A rotating shaft (314) is assembled and connected to the upper part of the rocker arm (313). The rotating shaft (314) is assembled and connected to the clamping mechanism (4).

4. The gripper adaptable to a wide range of packaging sizes according to claim 1, characterized in that: The clamping mechanism (4) includes a rocker arm (41), the lower part of which is fixedly connected to a rotating shaft (314), and the upper part of which is connected to a first telescopic cylinder (42). The upper part of the rocker arm (41) is hinged to the output shaft of the first telescopic cylinder (42), and the first telescopic cylinder (42) is assembled and connected to a connector (323).

5. The gripper adaptable to a wide range of packaging sizes according to claim 2, characterized in that: The inner side of the connector (323) is fixedly connected to a pressing mechanism (5), which includes a second telescopic cylinder (51), and the output shaft of the second telescopic cylinder (51) is assembled with a pressure plate (52).

6. The gripper adaptable to a wide range of packaging sizes according to claim 5, characterized in that: The guiding mechanism (6) includes a guide rail (61) located on the lower side of the mounting plate (21), and a slider (62) is fixedly connected to the upper side of the connector (323), and the slider (62) is slidably connected to the guide rail (61).

7. The gripper adaptable to a wide range of packaging sizes according to claim 4, characterized in that: The connector (323) is equipped with a hydraulic damper (7). When the crank handle (41) reaches its maximum opening, the working end of the hydraulic damper (7) contacts the crank handle (41).

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