A demoulding mechanical gripper for an injection molding machine

Abstract

The present invention discloses a demolding mechanical gripper for an injection molding machine, which includes a support arm and a gripper assembly. The support arm and the gripper assembly are rotatably connected through a hinge. The gripper assembly includes a connecting rod, an adjusting device vertically connected to the connecting rod, and a clamping gripper. The adjusting device includes a threaded rod and a micro motor. The output end of the micro motor is connected to the middle of the threaded rod through a coupling. The threads at both ends of the threaded rod are arranged in opposite directions. The top ends of the clamping grippers are respectively sleeved on both ends of the threaded rod, and the clamping grippers move towards or away from each other along the length direction of the threaded rod. A rotating flange for horizontally rotating the clamping gripper is provided on the connecting rod, and a limiting component for fixing the rotation of the gripper assembly is provided on the support arm. The present invention adjusts the clamping angle of the clamping gripper through the rotating flange, and thus can grasp the injection molded part at multiple angles, and fixes the clamping angle through the limiting component. The structure is simple and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of manipulators, and in particular to a demoulding mechanical gripper for an injection molding machine. Background Art

[0002] Injection molded parts refer to all kinds of injection molded products produced by an injection molding machine, including various shaped packages, parts, etc. Injection molded parts are made mainly of materials such as polyethylene or polypropylene and added with a variety of organic solvents. Among them, injection molding is a method for producing industrial product shapes. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding, compression molding and die casting methods. Picking up injection molded parts has always been one of the biggest problems in injection molding. After injection molded parts are injection molded, due to the high temperature, workers cannot directly take them out, and a manipulator is needed to operate the injection molded parts. However, in the prior art, most common manipulators have a simple structure, and their direction adjustment ability is relatively poor. Moreover, injection molded parts have various regular or irregular shapes. When picking up irregularly shaped injection molded parts, it is impossible to demould and pick up the injection molded parts from multiple angles, and manual cooperation is required, which greatly increases the labor intensity of workers and the work efficiency is relatively low. For this reason, we propose a demoulding mechanical gripper for an injection molding machine to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a demoulding mechanical gripper for an injection molding machine.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A demoulding mechanical gripper for an injection molding machine includes a support arm and a gripper assembly. The support arm and the gripper assembly are rotatably connected through a hinge. The gripper assembly includes a connecting rod, an adjusting device vertically connected to the connecting rod, and a clamping gripper. The adjusting device includes a threaded rod and a micro motor. The output end of the micro motor is connected to the middle of the threaded rod through a coupling. The threads at both ends of the threaded rod are set in opposite directions. The tops of the clamping grippers are respectively sleeved on both ends of the threaded rod, and the clamping grippers move towards or away from each other along the length direction of the threaded rod. A rotating flange for horizontally rotating the clamping gripper is provided on the connecting rod, and a limiting component for fixing the rotation of the gripper assembly is provided on the support arm.

[0006] In the above-mentioned invention content, further, the limiting component includes a movable rod sleeved on the support arm, a first limiting disc fixed on the support arm, and a second limiting disc fixed on the connecting rod. The movable rod can slide up and down along the support arm. A plurality of protrusions are provided on the circumference of the second limiting disc, and a clamping groove matching the protrusions is provided on the first limiting disc. A limiting block is provided on the lower surface of one end of the movable rod, and a groove opening downward and matching the protrusions is provided inside the limiting block. The movable rod fixes the second limiting disc through the cooperation between the protrusions, the clamping groove and the groove.

[0007] In the above-mentioned invention content, further, the hinge includes a first flange fixed at the bottom end of the support arm and a second flange fixed at the top end of the connecting rod. The first flange and the second flange are hinged to each other, and the support arm is hinged to the connecting rod through the first flange and the second flange.

[0008] In the above-mentioned invention content, further, the hinge further includes a plurality of insertion blocks arranged above the first flange. The plurality of insertion blocks are slidably connected to the support arm, and a plurality of through holes matching the plurality of insertion blocks are provided on the first flange and the second flange. The support arm is fixedly connected to the connecting rod by inserting the plurality of insertion blocks into the through holes.

[0009] In the above-mentioned invention content, further, a plurality of sliding grooves are provided at the bottom end of the support arm, and one end of the insertion block is clamped in the sliding groove and slides up and down along the length direction of the sliding groove.

[0010] In the above-mentioned invention content, further, the adjusting device further includes an adjusting rod fixedly connected to the bottom of the connecting rod. The adjusting rod is hollow and opens downward. The threaded rod is arranged inside the adjusting rod. The top end of the clamping gripper passes through the bottom of the adjusting rod and is threadedly connected to the threaded rod, and the clamping gripper can move towards or away from each other along the length direction of the threaded rod.

[0011] In the above-mentioned invention content, further, a protective case for placing a micro motor is further provided in the middle of the adjusting rod.

[0012] In the above-mentioned invention content, further, the clamping gripper includes a clamping plate threadedly connected to the threaded rod and a clamping cylinder fixed on the inner surface of the clamping plate.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The present invention can adjust the distance between the clamping grippers through the micro motor and the threaded rod to adapt to molds of different sizes.

[0015] 2. When the device of the present invention is in normal use, it vertically clamps the injection molded part. When vertical clamping is inconvenient, the connecting rod can be rotated through the hinge to make the gripper assembly clamp horizontally. When the injection molded part has an irregular shape, the clamping gripper can be further rotated through the rotary flange to adjust its clamping angle, and the injection molded part can be grasped at multiple angles. The limiting component can fix the horizontal clamping of the clamping gripper and also fix the clamping angle of the clamping gripper. The structure is simple, the operation is convenient, and it is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a state diagram of the support arm and the connecting rod of the present invention during use;

[0018] Figure 3 It is another state diagram of the support arm and the connecting rod of the present invention;

[0019] Figure 4 It is a state diagram of the insertion block in the hinge of the present invention during use;

[0020] Figure 5 It is another state diagram of the insertion block of the present invention;

[0021] Figure 6 It is a state diagram of a kind of use of the clamping gripper of the present invention;

[0022] Figure 7 It is another state diagram of the use of the clamping gripper of the present invention.

[0023] In the figure, 1 - support arm, 11 - chute, 2 - hinge, 21 - flange plate one, 22 - flange plate two, 23 - insertion block, 24 - through hole, 3 - connecting rod, 4 - adjusting device, 41 - threaded rod, 42 - micro motor, 43 - adjusting rod, 44 - protective shell, 5 - clamping gripper, 51 - clamping plate, 52 - clamping cylinder, 6 - rotary flange, 7 - limiting component, 71 - movable rod, 72 - limiting disk one, 73 - limiting disk two, 74 - convex block, 75 - clamping groove, 76 - limiting block. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0025] Embodiment:

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0027] Please refer to the attached Figure 1 - attached Figure 3 As shown, a demolding mechanical gripper for an injection molding machine includes a support arm 1 and a gripper assembly. The support arm 1 and the gripper assembly are rotatably connected through a hinge 2. Figure 2 This is the common use state of the support arm 1 and the gripper assembly, that is, the gripper assembly grabs the injection molded part downward. When it is not convenient for the gripper assembly to vertically clamp the injection molded part, the gripper assembly can be rotated counterclockwise through the hinge 2 to horizontally grab the injection molded part. The use state at this time is as Figure 3 shown. The connection state between the support arm 1 and the connecting rod 3 is only as Figure 2 and Figure 3 these two fixed states.

[0028] The gripper assembly includes a connecting rod 3, an adjusting device 4 perpendicularly connected to the connecting rod 3, and a clamping gripper 5. The adjusting device 4 includes a threaded rod 41 and a micro motor 42. The output end of the micro motor 42 is connected to the middle of the threaded rod 41 through a coupling. The threads at both ends of the threaded rod 41 are arranged in opposite directions. The top ends of the clamping gripper 5 are respectively sleeved on both ends of the threaded rod 41, and the clamping gripper 5 moves towards or away from each other along the length direction of the threaded rod 41, thereby adjusting the distance between the clamping grippers 5 to adapt to injection molded parts of different specifications and sizes. A rotating flange 6 for horizontally rotating the clamping gripper 5 is provided on the connecting rod 3, and a limiting component 7 for fixing the rotation of the gripper assembly is provided on the support arm 1.

[0029] In the above embodiment, the limiting component 7 includes a movable rod 71 sleeved on the support arm 1, a first limiting disk 72 fixed on the support arm 1, and a second limiting disk 73 fixed on the connecting rod 3. The movable rod 71 can slide up and down along the support arm 1. A plurality of convex blocks 74 are provided on the circumference of the second limiting disk 73. A slot 75 matching the convex blocks 74 is provided on the first limiting disk 72. A limiting block 76 is provided on the lower surface of one end of the movable rod 71. A groove with a downward opening and matching the convex blocks 74 is provided inside the limiting block 76. The second limiting disk 73 is fixed by the cooperation between the convex blocks 74, the slot 75, and the groove.

[0030] In the above-mentioned invention content, further, the hinge member 2 includes a first flange plate 21 fixed to the bottom end of the support arm 1 and a second flange plate 22 fixed to the top end of the connecting rod 3. The first flange plate 21 and the second flange plate 22 are hinged to each other, and the support arm 1 is hinged to the connecting rod 3 through the first flange plate 21 and the second flange plate 22.

[0031] Specifically, when it is necessary to rotate the connecting rod 3 to make the clamping gripper 5 horizontally grasp the injection molded part, the first flange plate 21 drives the connecting rod 3 to rotate counterclockwise. When the connecting rod 3 rotates to be vertically connected to the support arm 1, the convex block 74 on the second limiting plate 73 just engages in the clamping groove 75 on the first limiting plate 72. Then, the movable rod 71 is moved downward so that the groove on the movable rod 71 sleeves on the convex block 74, thereby fixing the connection between the second limiting plate 73 and the first limiting plate 72 and making the connecting rod 3 in a horizontal state. Before rotating the connecting rod 3, in order to facilitate multi-angle clamping of the injection molded part, the angle of the clamping gripper 5 can be first rotated to an appropriate position by rotating the flange 6, and then the connecting rod 3 is rotated through the hinge member 2 and the clamping angle of the clamping gripper 5 is fixed by the limiting component 7. The limiting component 7 fixes the rotation of the connecting rod 3 and also fixes the clamping angle of the clamping gripper 5. When the support arm 1 and the connecting rod 3 are in a vertically connected state, there can be multiple clamping angles of the clamping gripper 5, such as shown in Figure 6 and Figure 7 Only two of the clamping angles are shown.

[0032] In the above-mentioned embodiment, preferably, the hinge member 2 further includes a plurality of insertion blocks 23 arranged above the first flange plate 21. The plurality of insertion blocks 23 are slidably connected to the support arm 1. The first flange plate 21 and the second flange plate 22 are provided with a plurality of through holes 24 matching the plurality of insertion blocks 23. The support arm 1 is fixedly connected to the connecting rod 3 by inserting the plurality of insertion blocks 23 into the through holes 24.

[0033] In the above-mentioned embodiment, preferably, a plurality of sliding grooves 11 are provided at the bottom end of the support arm 1. One end of the insertion block 23 is clamped in the sliding groove 11 and slides up and down along the length direction of the sliding groove 11. Specifically, as shown in Figure 4 , when it is necessary to vertically clamp the injection molded part, that is, when the support arm 1 and the connecting rod 3 are on the same vertical line, the insertion block 23 is slid downward to make the insertion block 23 pass through the through holes 24 on the first flange plate 21 and the second flange plate 22 to fix the first flange plate 21 and the second flange plate 22, thereby fixing the vertical connection between the support arm 1 and the connecting rod 3 and preventing the gripper assembly from shaking left and right when vertically grasping the injection molded part; as shown in Figure 5 , when it is necessary to rotate the gripper assembly, the insertion block 23 is slid upward to make it away from the through hole 24. At this time, the second flange plate 22 can drive the connecting rod 3 to rotate.

[0034] In the above-mentioned invention content, further, the adjusting device 4 further includes an adjusting rod 43 fixedly connected to the bottom of the connecting rod 3. The adjusting rod 43 is hollow inside and open downward. The threaded rod 41 is arranged inside the adjusting rod 43. The top end of the clamping gripper 5 passes through the bottom of the adjusting rod 43 and is threadedly connected to the threaded rod 41, and the clamping gripper 5 can move toward or away from each other along the length direction of the threaded rod 41. Specifically, by starting the micro-motor 42, the threaded rod 41 can be driven to rotate, thereby adjusting the distance between the clamping grippers 5 to adapt to injection molded parts of different sizes and shapes. The adjusting rod 43 can play a role in protecting the threaded rod 41 during use and extend the service life of the equipment.

[0035] In the above-mentioned invention content, further, a protective shell 44 for placing the micro-motor 42 is further provided in the middle of the adjusting rod 43.

[0036] In the above-mentioned invention content, further, the clamping gripper 5 includes a clamping plate 51 threadedly connected to the threaded rod 41 and a clamping cylinder 52 fixed to the inner surface of the clamping plate 51. The clamping cylinder 52 can increase the clamping effect of the clamping gripper 5, avoid the situation of the injection molded part falling off during the clamping process, and improve the work efficiency.

[0037] Specific working process:

[0038] When the clamping gripper 5 needs to vertically clamp the injection molded part, the support arm 1 and the connecting rod 3 are kept on the same vertical line. At this time, when the insertion block 23 on the support arm 1 is slid downward, the insertion block 23 passes through the flange one 21 and the flange two 22, thereby preventing the flange two 22 and the connecting rod 3 from rotating and swaying left and right. At this time, the injection molded part can be vertically clamped;

[0039] When some injection molded parts are irregular in shape and cannot be vertically clamped and need to be horizontally clamped, first slide the insertion block 23 upward so that the flange two 22 and the connecting rod 3 can rotate. Then rotate the connecting rod 3 so that the connecting rod 3 and the support arm 1 are connected at a 90° right angle. During the rotation of the connecting rod 3, the clamping angle of the clamping hand can be adjusted by rotating the flange 6. The clamping angle can be adjusted according to the shape of the injection molded part. After adjustment, the convex block 74 on the upper limit disk two 73 is clamped in the card slot 75 on the limit disk one 72, and then the movable rod 71 is moved downward so that the groove in the limit block 76 on the movable rod 71 is sleeved on the convex block 74, thereby fixing the connecting rod 3 and the clamping angle and preventing rotation. The operation of the present invention is convenient, with high practicability and strong adjustment ability, and can be used for injection molded parts of different sizes and shapes.

[0040] The above-described embodiments merely represent specific implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A demoulding mechanical gripper for an injection molding machine, characterized in that, It includes a support arm (1) and a gripper assembly. The support arm (1) is rotatably connected to the gripper assembly through a hinge (2). The gripper assembly includes a connecting rod (3), an adjusting device (4) perpendicularly connected to the connecting rod (3), and a clamping gripper (5). The adjusting device (4) includes a threaded rod (41) and a micro motor (42). The output end of the micro motor (42) is connected to the middle of the threaded rod (41) through a coupling. The threads at both ends of the threaded rod (41) are set in opposite directions. The tops of the clamping grippers (5) are respectively sleeved on both ends of the threaded rod (41), and the clamping grippers (5) move towards or away from each other along the length direction of the threaded rod (41). A rotary flange (6) for horizontally rotating the clamping gripper (5) is provided on the connecting rod (3). A limit assembly (7) for fixing the rotation of the gripper assembly is provided on the support arm (1). The limit assembly (7) includes a movable rod (71) sleeved on the support arm (1), a first limit disk (72) fixed on the support arm (1), and a second limit disk (73) fixed on the connecting rod (3). The movable rod (71) can slide up and down along the support arm (1). A plurality of protrusions (74) are provided on the circumference of the second limit disk (73). A slot (75) matching the protrusions (74) is provided on the first limit disk (72). A limit block (76) is provided on the lower surface of one end of the movable rod (71). A groove with a downward opening and matching the protrusions (74) is provided inside the limit block (76). The movable rod (71) fixes the second limit disk (73) through the cooperation between the protrusions (74), the slots (75), and the grooves. The hinge (2) includes a first flange disk (21) fixed at the bottom end of the support arm (1) and a second flange disk (22) fixed at the top end of the connecting rod (3). The first flange disk (21) and the second flange disk (22) are hinged to each other. The support arm (1) is hinged to the connecting rod (3) through the first flange disk (21) and the second flange disk (22).

2. The demoulding mechanical gripper for an injection molding machine according to claim 1, wherein The hinge (2) further includes a plurality of insertion blocks (23) arranged above the first flange disk (21). The plurality of insertion blocks (23) are slidably connected to the support arm (1). A plurality of through holes (24) matching the plurality of insertion blocks (23) are provided on the first flange disk (21) and the second flange disk (22). The support arm (1) is fixedly connected to the connecting rod (3) by inserting the plurality of insertion blocks (23) into the through holes (24).

3. The demolding mechanical gripper for an injection molding machine according to claim 2, wherein, A plurality of sliding grooves (11) are provided at the bottom end of the support arm (1). One end of the insertion block (23) is clamped in the sliding groove (11) and slides up and down along the length direction of the sliding groove (11).

4. The demoulding mechanical gripper for an injection molding machine according to claim 1, wherein, The adjusting device (4) further includes an adjusting rod (43) fixedly connected to the bottom of the connecting rod (3). The adjusting rod (43) is hollow inside and has a downward opening. The threaded rod (41) is arranged inside the adjusting rod (43). The top of the clamping gripper (5) passes through the bottom of the adjusting rod (43) and is threadedly connected to the threaded rod (41), and the clamping gripper (5) can move towards or away from each other along the length direction of the threaded rod (41).

5. The demolding mechanical gripper for an injection molding machine according to claim 4, characterized in that, A protective case (44) for placing a micro motor (42) is further provided in the middle of the adjusting rod (43).

6. The demoulding mechanical gripper for an injection molding machine according to claim 4, characterized in that, The clamping gripper (5) includes a clamping plate (51) threadedly connected to a threaded rod (41) and a clamping cylinder (52) fixed to the inner surface of the clamping plate (51).

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