Automatic material receiving machine for injection molded parts

Abstract

The invention relates to the field of material receiving, in particular to an automatic material receiving machine for injection molded parts, which comprises a material receiving and transferring assembly mounted on a mechanical arm, and the material receiving and transferring assembly comprises a gas inlet and outlet driving device and at least two groups of injection molded part adsorption units; the injection molding part adsorption unit comprises a middle connecting base, a first cavity is formed in the middle connecting base, first pistons are symmetrically installed in the first cavity, first piston rods are installed on the first pistons, and a first end connecting part and a second end connecting part are fixed to the ends of the two first piston rods correspondingly. And a first interface is formed in the center, directly facing the first cavity, of the middle connecting seat. According to the automatic material receiving machine for the injection molding parts, when the vibration disc outputs strip-shaped injection molding parts, the multiple sets of vacuum suction cups can synchronously act to complete batch grabbing, and then the injection molding parts are accurately stacked into the material disc array type containing grooves through telescopic and rotary adjustment of the adsorption units and displacement of the mechanical arm in a matched mode. And the overall material receiving efficiency is obviously improved.

Description

Technical Field

[0001] The invention relates to the field of material collection, and in particular to an automatic material collection machine for injection molded parts. Background Art

[0002] After injection molding and the removal of sprue material, molded parts are piled up in a disordered state. They need to be vibrated on a vibrating plate to sort them into a single row, keeping adjacent parts in contact for subsequent machining operations. Traditional solutions use a robot arm with a single-station fixture to individually grab molded parts from the vibrating plate track and place them into independent receiving slots on an arrayed material tray. Due to the fixed gaps between adjacent slots, existing equipment can only transfer a single part at a time, resulting in low overall material collection efficiency.

[0003] Therefore, we propose an automatic material receiving machine for injection molded parts to solve the above problems. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an automatic material receiving machine for injection molded parts.

[0005] The present invention provides an automatic material receiving machine for injection molded parts, comprising a material receiving and transferring assembly for installation on a robotic arm, wherein the material receiving and transferring assembly comprises a gas inlet and outlet drive device and at least two groups of injection molded parts adsorption units; The injection molded part adsorption unit includes an intermediate connecting seat, a first cavity is provided in the intermediate connecting seat, a first piston is symmetrically installed inside the first cavity, a first piston rod is installed on the first piston, and a first end connecting portion and a second end connecting portion are respectively fixed to the ends of the two first piston rods, and a first interface is provided at the center of the intermediate connecting seat facing the first cavity; The bottoms of the middle connecting seat, the first end connecting portion and the second end connecting portion are all equipped with suction cups for taking and placing the injection molded parts, and the injection molded parts can be sucked by the suction cups; The ends of the adjacent injection molding adsorption units are connected via a connecting assembly.

[0006] Preferably, the connecting assembly includes a connecting block, a second cavity is provided in the connecting block, a second interface connected to the second cavity is provided on the side wall of the connecting block, a second piston is symmetrically installed in the second cavity, a second piston rod is installed on the second piston, a rotating seat is fixed to the end of the second piston rod, and the rotating seat is rotatably connected to the corresponding first end connecting part and second end connecting part through a rotating shaft, an arc-shaped groove cavity is provided in the first end connecting part and the second end connecting part, a third piston is installed in the arc-shaped groove cavity, an arc rod is fixed on the third piston, and the arc rod is fixedly connected to the rotating seat, the side walls of the first end connecting part and the second end connecting part are provided with a third interface connected to the arc-shaped groove cavity, and the first interface, the second interface and the third interface are all connected to the gas inlet and outlet drive device.

[0007] Preferably, the gas inlet and outlet drive device includes a mounting plate, a first gas cylinder and a second gas cylinder fixed on the mounting plate, the ends of the first gas cylinder and the second gas cylinder are respectively provided with a first gas inlet and outlet and a second gas inlet and outlet, the first gas inlet and outlet are connected to the first interface and the second interface through a pipeline, the second gas inlet and outlet are connected to the third interface through a pipeline, a fourth piston and a fifth piston are respectively installed in the first gas cylinder and the second gas cylinder, and a synchronous drive device is installed between the first gas cylinder and the second gas cylinder.

[0008] Preferably, the synchronous drive device includes a cylinder fixed on the second air cylinder, a connecting rod is fixed between the fourth piston and the fifth piston, and the output end of the cylinder is fixedly connected to the connecting rod.

[0009] Preferably, the first end connecting portion and the second end connecting portion are both provided with a first blocking portion and a second blocking portion for limiting the rotation angle of the rotating seat, so that the rotating seat can only rotate at an angle of 90 degrees.

[0010] Preferably, the rotation center lines of the arc-shaped rod, the arc-shaped groove cavity and the rotating shaft coincide with each other.

[0011] Preferably, the rotating shaft is a damping rotating shaft, so that the rotating seat rotates more smoothly and avoids the suction cup and the injection molded part from being separated due to sudden acceleration.

[0012] Preferably, a fixing plate for connecting with the robotic arm is fixed on the middle connecting seat located at the center.

[0013] The connecting rod is driven to move by the cylinder, thereby prompting the fourth piston and the fifth piston to rotate synchronously. When the fourth piston supplies air to the first interface and the second interface along the first air inlet and outlet and the pipeline, the first piston and the second piston are prompted to move, thereby increasing the distance between the intermediate connecting seat and the first end connection part and the second end connection part, and the distance between the first end connection part and the second end connection part at the connection of adjacent injection molding adsorption units is also increased. At the same time, the fifth piston evacuates air to the third interface along the second air inlet and outlet and the pipeline, causing the third piston to move along the arc-shaped groove cavity, and the arc-shaped rod is received in the arc-shaped groove cavity, and the rotating seat rotates relative to the corresponding first end connection part and the second end connection part. When the fourth piston is located at the end of the first air cylinder away from the second air cylinder, the connecting assembly is arranged vertically to the injection molding adsorption unit, and the suction cup is arranged in a rectangular array.

[0014] When the fourth piston evacuates the first interface and the second interface along the first air inlet and outlet and the pipeline, the first piston and the second piston are prompted to move, thereby reducing the distance between the intermediate connecting seat and the first end connecting portion and the second end connecting portion, and the distance between the first end connecting portion and the second end connecting portion at the connection of adjacent injection molding adsorption units is also reduced. At the same time, the fifth piston supplies air to the third interface along the second air inlet and outlet and the pipeline, causing the third piston to move along the arc-shaped groove cavity, the arc-shaped rod to move outside the arc-shaped groove cavity, and the rotating seat to rotate relative to the corresponding first end connecting portion and second end connecting portion. When the fourth piston is located in the first air cylinder close to one end of the second air cylinder, the connecting assembly and the injection molding adsorption unit are in the same straight line, and all the suction cups are in the same straight line.

[0015] Compared with the related art, the present invention has the following beneficial effects: A qualitative leap has been achieved through the precise control of the gas drive system. The first and second gas cylinders of the gas drive system achieve strict synchronization of piston movement through connecting rods, thereby accurately controlling the pressure changes in each gas path. When the vibration plate outputs strip-shaped injection molded parts, multiple sets of vacuum suction cups can move synchronously to complete batch grasping. Subsequently, the expansion and rotation adjustment of the adsorption unit, combined with the displacement of the robotic arm, are used to accurately stack the injection molded parts into the tray array storage tank. Through the collaborative operation of multiple units and the precise control of the pneumatic system, this solution transforms the traditional single-piece pick-and-place mode into a batch and efficient processing mode, greatly shortening the material collection time and significantly improving the overall material collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic structural diagram of the intermediate connecting seat of the present invention; Figure 3This is a schematic diagram of the connection assembly structure of the present invention; Figure 4 This is one of the structural schematic diagrams of the gas inlet and outlet drive device of the present invention; Figure 5 This is the second structural schematic diagram of the gas inlet and outlet drive device of the present invention.

[0017] Numbers in the figure: 1. Material receiving and transferring assembly; 2. Gas inlet and outlet driving device; 3. Injection molding part adsorption unit; 4. Intermediate connecting seat; 5. First cavity; 6. First piston; 7. First piston rod; 8. First end connecting part; 9. Second end connecting part; 10. First interface; 11. Suction cup; 12. Connecting assembly; 13. Connecting block; 14. Second cavity; 15. Second interface; 16. Second piston; 17. Second piston rod; 18. Rotating seat; 19. Rotating shaft; 20. Arc groove cavity; 21. Third piston; 22. Arc rod; 23. Third interface; 24. Mounting plate; 25. First air cylinder; 26. Second air cylinder; 27. First air inlet and outlet; 28. Second air inlet and outlet; 29. ​​Fourth piston; 30. Fifth piston; 31. Synchronous driving device; 32. Cylinder; 33. Connecting rod; 34. First blocking part; 35. Second blocking part; 36. Fixed plate. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to 1- Figure 5 This automatic receiving machine for injection molded parts utilizes a receiving and transfer assembly (1) mounted on a robotic arm as its core actuator. This assembly includes a gas drive system and multiple sets of coordinated suction units. Through precise pneumatic control and mechanical linkage, the entire device efficiently and neatly stacks the disorganized injection molded parts discharged from a vibrating plate, significantly improving the efficiency of traditional single-piece pick-and-place operations.

[0020] The main structure of the material receiving and transferring component 1 is composed of a gas inlet and outlet drive device 2 and at least two groups of injection molding adsorption units 3 arranged in series. Each group of injection molding adsorption units 3 includes an intermediate connecting seat 4, inside which a first cavity 5 is provided as a pneumatic execution chamber. The first pistons 6 are symmetrically arranged in the first cavity 5, and each piston is connected to the first piston rod 7. The ends of the two piston rods are respectively fixed with a first end connection part 8 and a second end connection part 9. A first interface 10 is provided in the center of the intermediate connecting seat 4 as a channel for gas input / output. Vacuum suction cups 11 are installed at the bottom of the intermediate connecting seat 4, the first end connection part 8 and the second end connection part 9. These suction cups realize the grasping and release of injection molding parts through negative pressure adsorption.

[0021] Adjacent injection molding adsorption units 3 are flexibly connected through a connecting assembly 12. The core of the connecting assembly 12 is a connecting block 13, which is provided with a second cavity 14 inside, and a second interface 15 connected to the second cavity 14 is opened on the side wall. Second pistons 16 are symmetrically arranged in the second cavity 14, and each piston is connected to a second piston rod 17, and a rotating seat 18 is fixed to the end of the piston rod. The rotating seat 18 forms a rotational connection with the first end connection part 8 and the second end connection part 9 of the adjacent adsorption unit through a rotating shaft 19 with a damping function. In order to accurately control the rotation angle, an arc-shaped groove cavity 20 is provided inside the first end connection part 8 and the second end connection part 9, and a third piston 21 is installed in the cavity. The piston is connected to an arc-shaped rod 22, and the center of curvature of the arc-shaped rod 22 completely coincides with the axis of the rotating shaft 19, and is finally fixedly connected to the rotating seat 18. The side walls of the first end connection part 8 and the second end connection part 9 are provided with a third interface 23 for connecting to the pneumatic control circuit.

[0022] The gas drive system consists of a first gas cylinder 25 and a second gas cylinder 26 supported by a mounting plate 24. The first gas inlet and outlet 27 of the first gas cylinder 25 are connected to the first interface 10 of each adsorption unit and the second interface 15 of the connecting assembly via pipelines, forming the main gas path. The second gas inlet and outlet 28 of the second gas cylinder 26 are connected to each third interface 23 via pipelines, forming an independent rotation control gas path. The fourth piston 29 and fifth piston 30 disposed within the two gas cylinders are rigidly connected by a connecting rod 33. The output end of the cylinder 32 of the synchronous drive device 31 is directly connected to this connecting rod 33, ensuring strict synchronization of the piston motion of the two gas cylinders.

[0023] To ensure operational accuracy, first and second stoppers 34 and 35 are provided on the first and second end connectors 8 and 9, strictly limiting the rotational range of the swivel base 18 to 90°. A fixing plate 36, connected to the robotic arm, is affixed to the top of the intermediate connector 4, located at the center of the entire material receiving and transfer assembly 1, ensuring spatial positioning of the entire device.

[0024] Working principle: The cylinder 32 drives the connecting rod 33 to move, thereby prompting the fourth piston 29 and the fifth piston 30 to rotate synchronously. When the fourth piston 29 supplies air to the first interface 10 and the second interface 15 along the first air inlet and outlet 27 and the pipeline, the first piston 6 and the second piston 16 are prompted to move, thereby increasing the distance between the intermediate connecting seat 4 and the first end connection part 8 and the second end connection part 9. The distance between the first end connection part 8 and the second end connection part 9 at the connection of adjacent injection molding adsorption units 3 is also increased. At the same time, the fifth piston 30 exhausts air to the third interface 23 along the second air inlet and outlet 28 and the pipeline, causing the third piston 21 to move along the arc-shaped groove cavity 20, and the arc-shaped rod 22 is retracted into the arc-shaped groove cavity 20. The rotating seat 18 rotates relative to the corresponding first end connection part 8 and the second end connection part 9. When the fourth piston 29 is located at the end of the first air cylinder 25 away from the second air cylinder 26, the connecting assembly 12 is arranged vertically with the injection molding adsorption unit 3, and the suction cup 11 is arranged in a rectangular array.

[0025] When the fourth piston 29 evacuates the first interface 10 and the second interface 15 along the first air inlet and outlet 27 and the pipeline, the first piston 6 and the second piston 16 are prompted to move, thereby reducing the distance between the intermediate connecting seat 4 and the first end connection part 8 and the second end connection part 9, and the distance between the first end connection part 8 and the second end connection part 9 at the connection of adjacent injection molding adsorption units 3 is also reduced. At the same time, the fifth piston 30 supplies air to the third interface 23 along the second air inlet and outlet 28 and the pipeline, causing the third piston 21 to move along the arc-shaped groove cavity 20, the arc-shaped rod 22 moves out of the arc-shaped groove cavity 20, and the rotating seat 18 rotates relative to the corresponding first end connection part 8 and the second end connection part 9. When the fourth piston 29 is located in the first air cylinder 25 near one end of the second air cylinder 26, the connecting assembly 12 and the injection molding adsorption unit 3 are in the same straight line, and all the suction cups 11 are in the same straight line.

[0026] During actual operation, the gas inlet and outlet drive device 2 drives the piston assembly to achieve the telescopic movement and rotation of the adsorption unit by precisely controlling the pressure changes in each gas circuit. When the strip-shaped injection molded parts output by the vibration disk enter the material removal position, multiple groups of suction cups 11 work synchronously to complete batch grabbing. Subsequently, through the displacement of the robotic arm and the rotation adjustment of the adsorption unit, the injection molded parts are accurately stacked into the array-type receiving slots of the material tray. This multi-unit collaborative operation mode, combined with the precise control of the pneumatic system, effectively solves the problem of low efficiency of traditional single-piece picking and placing, and is particularly suitable for precision injection molded parts processing scenarios that require high-density and regular stacking.

[0027] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic material receiving machine for injection molded parts, characterized in that: It comprises a material receiving and transferring assembly (1) for being mounted on a robotic arm, wherein the material receiving and transferring assembly (1) comprises a gas inlet and outlet driving device (2) and at least two groups of injection molded part adsorption units (3); The injection molded part adsorption unit (3) comprises an intermediate connecting seat (4), a first cavity (5) is provided in the intermediate connecting seat (4), a first piston (6) is symmetrically installed inside the first cavity (5), a first piston rod (7) is installed on the first piston (6), and a first end connecting portion (8) and a second end connecting portion (9) are fixed to the ends of the two first piston rods (7), respectively, and a first interface (10) is provided at the center of the intermediate connecting seat (4) facing the first cavity (5); Suction cups (11) for taking and placing injection molded parts are installed at the bottom of the intermediate connecting seat (4), the first end connecting portion (8), and the second end connecting portion (9); The ends of adjacent injection molded part adsorption units (3) are connected via a connecting assembly (12).

2. The automatic material receiving machine for injection molded parts according to claim 1, characterized in that: The connecting assembly (12) includes a connecting block (13), a second cavity (14) is provided in the connecting block (13), a second interface (15) connected to the second cavity (14) is provided on the side wall of the connecting block (13), a second piston (16) is symmetrically installed in the second cavity (14), a second piston rod (17) is installed on the second piston (16), a rotating seat (18) is fixed to the end of the second piston rod (17), and the rotating seat (18) is rotatably connected to the corresponding first end connecting portion (8) and the second end connecting portion (9) through a rotating shaft (19). A circular arc groove cavity (20) is provided in each of the first end connecting portion (8) and the second end connecting portion (9), a third piston (21) is installed in the circular arc groove cavity (20), a circular arc rod (22) is fixed on the third piston (21), and the circular arc rod (22) is fixedly connected to the rotating seat (18), and a third interface (23) is provided on the side wall of each of the first end connecting portion (8) and the second end connecting portion (9) for communicating with the circular arc groove cavity (20), and the first interface (10), the second interface (15) and the third interface (23) are all in communication with the gas inlet and outlet driving device (2).

3. The automatic material receiving machine for injection molded parts according to claim 2, characterized in that: The gas inlet and outlet drive device (2) comprises a mounting plate (24), a first gas cylinder (25) and a second gas cylinder (26) fixed on the mounting plate (24), the ends of the first gas cylinder (25) and the second gas cylinder (26) are respectively provided with a first gas inlet and outlet (27) and a second gas inlet and outlet (28), the first gas inlet and outlet (27) is communicated with the first interface (10) and the second interface (15) through a pipeline, the second gas inlet and outlet (28) is communicated with the third interface (23) through a pipeline, a fourth piston (29) and a fifth piston (30) are respectively installed in the first gas cylinder (25) and the second gas cylinder (26), and a synchronous drive device (31) is installed between the first gas cylinder (25) and the second gas cylinder (26).

4. The automatic material receiving machine for injection molded parts according to claim 3, characterized in that: The synchronous drive device (31) includes a cylinder (32) fixed on the second air cylinder (26), a connecting rod (33) fixed between the fourth piston (29) and the fifth piston (30), and an output end of the cylinder (32) is fixedly connected to the connecting rod (33).

5. The automatic material receiving machine for injection molded parts according to claim 2, characterized in that: The first end connecting portion (8) and the second end connecting portion (9) are both provided with a first blocking portion (34) and a second blocking portion (35) for limiting the rotation angle of the rotating seat (18).

6. The automatic material receiving machine for injection molded parts according to claim 2, characterized in that: The rotation center lines of the arc-shaped rod (22), the arc-shaped groove cavity (20) and the rotating shaft (19) coincide with each other.

7. The automatic material receiving machine for injection molded parts according to claim 2, characterized in that: The rotating shaft (19) is a damping rotating shaft.

8. The automatic material receiving machine for injection molded parts according to claim 3, characterized in that: When the fourth piston (29) is located in the first cylinder (25) at one end away from the second cylinder (26), the connecting assembly (12) and the injection molding adsorption unit (3) are arranged vertically, and the suction cups (11) are arranged in an array.

9. The automatic material receiving machine for injection molded parts according to claim 3, characterized in that: When the fourth piston (29) is located in the first cylinder (25) near one end of the second cylinder (26), the connecting assembly (12) and the injection molded part adsorption unit (3) are on the same straight line, and all the suction cups (11) are on the same straight line.

10. The automatic material receiving machine for injection molded parts according to claim 1, characterized in that: A fixing plate (36) for connecting to the robot arm is fixed on the middle connecting seat (4) located at the center.

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