Manipulator pneumatic clamp device for injection molding machine

Abstract

The utility model relates to a manipulator pneumatic clamp device for an injection molding machine, which relates to the technical field of clamp equipment and comprises a base, a manipulator device and a clamping mechanism. The manipulator device is rotationally mounted on the base; the clamping mechanism comprises a connecting frame, a vacuum pump, a mounting plate, a plurality of suction cups and a plurality of filter screens, the connecting frame is arranged on the manipulator device, the vacuum pump and the mounting plate are arranged on the connecting frame, the suction cups are arranged on the mounting plate and communicated with the vacuum pump through hoses, the filter screens are detachably mounted in the suction cups, and the vacuum pump is arranged on the mounting plate. The suction cup is in a corrugated shape. According to the utility model, through the clamping mechanism, the technical problems that an injection-molded part in an injection mold is difficult to clamp and a corresponding clamp is not durable are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp equipment, in particular to a pneumatic clamp device for a manipulator used in an injection molding machine. Background Art

[0002] A manipulator is an automated device that mimics certain movements of the human hand and arm, used to grasp, move objects, or operate tools according to a fixed program. The manipulator is the earliest industrial robot and also the earliest modern robot. It can replace heavy labor to achieve mechanization and automation of production, and can operate in hazardous environments to protect human safety. Therefore, it is widely used in machinery manufacturing, metallurgy, electronics, light industry, and atomic energy sectors.

[0003] At present, the Chinese utility model patent application with publication number CN217195333U proposes a pneumatic manipulator clamp, which includes a base and a rotating cylinder. The rotating cylinder is fixedly mounted on the top of the base. The output end of the rotating cylinder is provided with a rotating rod. The top of the rotating rod is provided with a motor. A robotic arm is embedded and installed on the output shaft of the motor. In this application document, control instructions are issued through an operation panel and transmitted to the controller. The rotating cylinder and the telescopic cylinder are controlled by the controller. The rotating rod is driven to rotate by the rotating cylinder, thereby driving the pneumatic clamp to move in all directions, which is convenient for the use of the pneumatic clamp and has a wide range of applications. The pneumatic rod is operated by the telescopic cylinder, and the pneumatic clamp is driven to open and close by the pneumatic rod, which is convenient for operation, improves the intelligence of the device, and reduces the work difficulty of the staff.

[0004] However, the clamp in the above structure clamps the object by clamping both sides of the object to be clamped. However, when clamping the injection molded parts in the injection mold, many injection molded parts may only have one side exposed outside the injection mold, and it is impossible to clamp both sides of the injection molded parts. The existing suction cup picking structure can use the negative pressure after air compression to form an adsorption force, so that the robot arm can firmly grasp the injection molded parts from the injection mold, but the suction cup has high requirements on the flatness of the adsorbed surface, and in the process of the suction cup adsorbing the injection molded parts, some impurities and dust are easily sucked into the suction cup, affecting the service life of the suction cup picking structure. Utility Model Content

[0005] The utility model provides a pneumatic clamp device for a manipulator used in an injection molding machine, which can improve the technical problems in the related art that the injection molded parts in the injection mold are difficult to clamp and the corresponding clamps are not durable.

[0006] The present application provides a pneumatic clamping device for a manipulator used in an injection molding machine, comprising:

[0007] Base, manipulator device and clamping mechanism;

[0008] The manipulator device is rotatably mounted on the base;

[0009] The clamping mechanism includes a connecting frame, a vacuum pump, a mounting plate, multiple suction cups and multiple filter screens. The connecting frame is arranged on a manipulator device, the vacuum pump and the mounting plate are arranged on the connecting frame, and the multiple suction cups are arranged on the mounting plate. The suction cups are connected to the vacuum pump through a hose, and the filter screen can be detachably installed in the suction cup, and the suction cup is corrugated.

[0010] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0011] When the vacuum pump starts working, it creates a vacuum, causing the suction cup to form a tight bond with the surface of the injection molded part. This bonding force is strong enough to resist certain external forces, thus ensuring that the suction cup can stably fix the injection molded part. Once the suction cup is in contact with the object, the robotic arm can perform various operations as needed, such as moving the object to a specified position or performing delicate operations. The injection molded part in the mold has only one side exposed outside the injection mold, which can be sucked and fixed by the above-mentioned suction cup. The corrugated suction cup can adapt to uneven surfaces, providing a lifting effect when grasping the workpiece, compensating for different heights, and gently grasping fragile workpieces. In addition, when the suction cup grasps the injection molded part, some of the impurities and dust sucked in are blocked on the filter screen. After the gripping work is completed, the vacuum pump is started to increase the internal pressure of the suction cup to greater than the external atmospheric pressure, which allows the suction cup to be separated from the injection molded part. Impurities and dust on the filter screen will fall off, making it difficult to clog the filter screen, allowing the filter screen to be used for a long time, thereby achieving the purpose of increasing the service life of the suction cup retrieving structure.

[0012] In some embodiments, a threaded sleeve is provided on the filter screen, and the threaded sleeve is fixedly installed on the internal pipe of the suction cup through threads.

[0013] In some embodiments, the threaded sleeve extends partially from one end of the fixing portion to the outside of the internal pipe of the suction cup.

[0014] In some embodiments, the robot device includes a rotating base, a first movable arm, and a second movable arm;

[0015] The rotating seat is rotatably mounted on the base, and a first driving member and a second driving member are provided on both sides of the rotating seat. The radially extending portion of the driving end of the second driving member forms a swing end; one end of the push-pull rod is hinged to the swing end;

[0016] One end of the first movable arm is hinged to the rotating seat and connected to the driving end of the first driving member, and the other end is hinged to a point in the second movable arm;

[0017] One end of the second movable arm is hinged to the other end of the push-pull rod, and the other end is hinged with a two-axis movable component, and the two-axis movable component is connected to the connecting frame.

[0018] In some embodiments, a third driving member is provided on the second movable arm for driving the two-axis movable component to swing relative to the second movable arm.

[0019] In some embodiments, a rotating drive element is provided on the base, and the rotating drive element includes a driving motor, a worm and a worm wheel. The driving motor is arranged on the base, and the worm and worm wheel are rotatably arranged in the base. The worm and the worm wheel are engaged with each other, and the output end of the driving motor is connected to the worm, and the worm wheel is connected to the rotating seat through a rotating shaft.

[0020] In summary, the present invention has at least one of the following beneficial technical effects:

[0021] 1. When the vacuum pump starts working, it generates a vacuum, which makes the suction cup form a tight bond with the surface of the injection molded part. This bonding force is large enough to resist a certain external force, thereby ensuring that the suction cup can stably fix the injection molded part. Once the suction cup is in contact with the object, the robotic arm can perform various operations as needed, such as moving the object to a specified position or performing delicate operations. If only one side of the injection molded part is exposed outside the injection mold, it can be adsorbed and fixed by the above suction cup.

[0022] 2. The corrugated suction cup can adapt to uneven surfaces, has a lifting effect when grabbing workpieces, compensates for different heights, and gently grabs fragile workpieces.

[0023] 3. When the suction cup is adsorbing the injection molded part, some of the impurities and dust sucked in will be blocked on the filter. After the clamping work is completed, start the vacuum pump to make the internal air pressure of the suction cup greater than the external atmospheric pressure, so that the suction cup can be separated from the injection molded part. The impurities and dust on the filter will fall off, making it difficult to clog the filter, so that the filter can be used for a long time, thereby achieving the purpose of increasing the service life of the suction cup material picking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a pneumatic clamping device for a manipulator used in an injection molding machine according to an embodiment of the present application;

[0026] Figure 2 It is the side view of the overall structure;

[0027] Figure 3It is the structural diagram of the clamping mechanism;

[0028] Figure 4 This is a diagram of the internal structure of the suction cup;

[0029] Figure 5 This is a diagram of the internal structure of the base.

[0030] Among them, the reference numerals in the figures are:

[0031] 10. Base; 20. Manipulator device; 21. Rotating seat; 22. First movable arm; 23. Second movable arm; 231. Third driving member; 24. First driving member; 25. Second driving member; 26. Swing end; 27. Push-pull rod; 28. Two-axis movable part; 30. Clamping mechanism; 31. Connecting frame; 32. Vacuum pump; 33. Mounting plate; 34. Suction cup; 341. Hose; 35. Filter; 351. Threaded sleeve; 40. Rotating driving element; 41. Driving motor; 42. Worm; 43. Worm gear. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0033] Based on this, the technical problems in the related art that the injection molded parts are difficult to clamp and the corresponding clamps are not durable can be improved. The embodiments of the present application provide the following solutions.

[0034] Please also refer to Figures 1 to 5 , the embodiment of the present application provides a pneumatic clamping device for a manipulator used in an injection molding machine, comprising a base 10, a manipulator device 20 and a clamping mechanism 30;

[0035] The manipulator device 20 is rotatably mounted on the base 10;

[0036] The clamping mechanism 30 includes a connecting frame 31, a vacuum pump 32, a mounting plate 33, multiple suction cups 34 and multiple filter screens 35. The connecting frame 31 is set on the robot device 20, the vacuum pump 32 and the mounting plate 33 are set on the connecting frame 31, and the multiple suction cups 34 are set on the mounting plate 33. The suction cup 34 is connected to the vacuum pump 32 through a hose 341. The filter screen 35 can be detachably installed in the suction cup 34, and the suction cup 34 is corrugated.

[0037] As can be seen from the above, when the vacuum pump 32 starts working, a vacuum is generated, so that the suction cup 34 forms a tight bond with the surface of the injection molded part. This bonding force is large enough to resist a certain external force, thereby ensuring that the suction cup 34 can stably fix the injection molded part. Once the suction cup 34 is in contact with the object, the robot arm can perform various operations as needed, such as moving the object to a specified position or performing delicate operations. Only one side of the injection molded part in the mold is exposed outside the injection mold, and it can be adsorbed and fixed by the above suction cup 34; the corrugated suction cup 34 can adapt to uneven surfaces. The surface has a lifting effect when grabbing the workpiece, and the compensation of different heights allows the delicate workpiece to be gently grabbed. Moreover, when the suction cup 34 adsorbs the injection molded part, some of the impurities and dust sucked in will be blocked on the filter screen 35. After the clamping work is completed, the vacuum pump 32 is started to make the internal air pressure of the suction cup 34 greater than the external atmospheric pressure, so that the suction cup 34 can be separated from the injection molded part, and the impurities and dust on the filter screen 35 will fall off, making it difficult to clog the filter screen 35, so that the filter screen 35 can be used for a long time, thereby achieving the purpose of increasing the service life of the suction cup 34 material picking structure.

[0038] Optionally, in some embodiments, see Figure 4 The filter screen 35 is provided with a threaded sleeve 351 , and the threaded sleeve 351 is fixedly installed on the internal pipe of the suction cup 34 through threads.

[0039] With this arrangement, a worker can remove the filter screen 35 by rotating the threaded sleeve 351 , thereby facilitating replacement of the filter screen 35 .

[0040] Optionally, in some embodiments, see Figures 1 to 4 The threaded sleeve 351 extends from one end of the fixing portion to the outside of the internal pipe of the suction cup 34 .

[0041] With this arrangement, the staff can grasp the side wall of the threaded sleeve 351 through the protruding portion of the threaded sleeve 351, thereby rotating and removing the threaded sleeve 351 and the filter screen 35, further facilitating the staff to replace the filter screen 35.

[0042] Optionally, in some embodiments, see Figures 1 to 2 , the manipulator device 20 includes a rotating base 21, a first movable arm 22 and a second movable arm 23;

[0043] The rotating seat 21 is rotatably mounted on the base 10. A first driving member 24 and a second driving member 25 are provided on both sides of the rotating seat 21. The radially extending portion of the driving end of the second driving member 25 forms a swing end 26. One end of a push-pull rod 27 is hinged to the swing end 26.

[0044] One end of the first movable arm 22 is hinged to the rotating base 21 and connected to the driving end of the first driving member 24, and the other end is hinged to a point in the second movable arm 23;

[0045] One end of the second movable arm 23 is hinged to the other end of the push-pull rod 27 , and the other end is hinged with a two-axis movable component 28 , which is connected to the connecting frame 31 .

[0046] With such an arrangement, the staff can control the flipping of the first movable arm 22 through the first driving member 24, so as to achieve the purpose of adjusting the overall height of the manipulator device 20. The first movable arm 22, the second movable arm 23 and the push-pull rod 27 form a variable quadrilateral structure. One side of the variable quadrilateral can be the swing end 26 on the aforementioned second driving member 25. In this way, when the second driving member 25 moves, since the other three sides are rigid bodies and are hinged to each other, a change in one side can force the variable quadrilateral to undergo a geometric change, thereby realizing the pitch adjustment of the second movable arm 23.

[0047] Optionally, in some embodiments, see Figures 1 to 2 A third driving member is provided on the second movable arm 23 for driving the two-axis movable component 28 to swing relative to the second movable arm 23.

[0048] With this arrangement, by activating the third driving member, the swing of the connecting frame 31 can be controlled through the two-axis movable component 28 , thereby achieving the purpose of controlling the adsorption fixing angle of the clamping mechanism 30 .

[0049] Optionally, in some embodiments, see Figures 1 to 5 A rotation driving element 40 is provided on the base 10, and the rotation driving element 40 includes a driving motor 41, a worm 42 and a worm wheel 43. The driving motor 41 is arranged on the base 10, and the worm 42 and the worm wheel 43 are rotatably arranged in the base 10. The worm 42 is engaged with the worm wheel 43. The output end of the driving motor 41 is connected to the worm 42, and the worm wheel 43 is connected to the rotating seat 21 through a rotating shaft.

[0050] With this arrangement, when the driving motor 41 is started, the worm 42 rotates, the worm wheel 43 rotates, and drives the rotating base 21 to rotate, thereby achieving the purpose of controlling the rotation angle of the rotating base 21.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An injection molding machine using a manipulator pneumatic clamping device, characterized in that: It comprises a base (10), a manipulator device (20) and a clamping mechanism (30); The manipulator device (20) is rotatably mounted on the base (10); The clamping mechanism (30) comprises a connecting frame (31), a vacuum pump (32), a mounting plate (33), a plurality of suction cups (34) and a plurality of filter screens (35); the connecting frame (31) is arranged on the manipulator device (20); the vacuum pump (32) and the mounting plate (33) are arranged on the connecting frame (31); the plurality of suction cups (34) are arranged on the mounting plate (33); the suction cups (34) are connected to the vacuum pump (32) via a hose (341); the filter screen (35) is detachably mounted in the suction cup (34); and the suction cup (34) is corrugated.

2. The pneumatic clamping device for a manipulator used in an injection molding machine according to claim 1, characterized in that: A threaded sleeve (351) is provided on the filter screen (35), and the threaded sleeve (351) is fixedly installed on the internal pipe of the suction cup (34) through threads.

3. The pneumatic clamping device for a manipulator used in an injection molding machine according to claim 2, characterized in that: An end portion of the threaded sleeve (351) away from the fixing portion extends to the outside of the internal pipe of the suction cup (34).

4. The pneumatic clamping device for an injection molding machine using a manipulator according to any one of claims 1 to 3, characterized in that: The manipulator device (20) comprises a rotating seat (21), a first movable arm (22) and a second movable arm (23); The rotating seat (21) is rotatably mounted on the base (10), and a first driving member (24) and a second driving member (25) are provided on both sides of the rotating seat (21). The radially extending portion of the driving end of the second driving member (25) forms a swing end (26); one end of a push-pull rod (27) is hingedly connected to the swing end (26); One end of the first movable arm (22) is hinged to the rotating seat (21) and connected to the driving end of the first driving member (24), and the other end is hinged to a point in the second movable arm (23); One end of the second movable arm (23) is hinged to the other end of the push-pull rod (27), and the other end is hinged with a two-axis movable component (28), and the two-axis movable component (28) is connected to the connecting frame (31).

5. The pneumatic clamping device for a manipulator used in an injection molding machine according to claim 4, characterized in that: A third driving member (231) is provided on the second movable arm (23) for driving the two-axis movable component (28) to swing relative to the second movable arm (23).

6. The pneumatic clamping device for a manipulator used in an injection molding machine according to claim 5, characterized in that: A rotary drive element (40) is provided on the base (10), and the rotary drive element (40) includes a drive motor (41), a worm (42) and a worm wheel (43). The drive motor (41) is provided on the base (10), and the worm (42) and the worm wheel (43) are rotatably provided in the base (10). The worm (42) and the worm wheel (43) are meshed with each other. The output end of the drive motor (41) is connected to the worm (42), and the worm wheel (43) is connected to the rotating seat (21) via a rotating shaft.

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