Pick-up mechanical arm of injection molding machine for plastic part production

Abstract

The utility model discloses a piece taking mechanical arm of an injection molding machine for plastic part production, which belongs to the technical field of plastic part production and comprises a mechanical arm body and a piece taking plate, a mounting frame is fixed on the upper surface of the piece taking plate, a clamping plate is arranged below the piece taking plate, and a motor is mounted in the middle of the upper surface of the piece taking plate through a bolt. According to the part taking mechanical arm of the injection molding machine for plastic part production, a motor drives a two-way threaded rod to rotate, so that a sleeve block drives two racks to move downwards, at the moment, the racks drive meshed driving gears to rotate, meanwhile, the driving gears drive meshed incomplete gears to rotate, and then two clamping plates rotate relatively; and then, the piston plate moves upwards in the suction cup, so that negative pressure is generated in the suction cup, the plastic part is adsorbed and fixed, and therefore the stability of the mechanical arm body during part taking is improved, and the plastic part is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic parts production, in particular to a piece-taking mechanical arm of an injection molding machine for producing plastic parts. Background Art

[0002] Injection molding machines are used in the production of plastic parts, and injection molding machines are the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. When the injection molding machine is working, it needs a mechanical arm to cooperate with a material picking fixture to make the injection molding machine pick up materials more convenient; for example, the pick-up mechanical arm based on the injection molding machine with the publication number "CN214773784U" uses the placement plate, the first slide groove and the slide rod in the clamping mechanism. The pick-up plate slides inside the first slide groove through the slide rod, and the threaded rod is perpendicular to the top of the slide rod. The threaded rod slides inside the second slide groove, thereby driving the pick-up plate to slide inside the placement plate, thereby adjusting the distance between the two pick-up plates. The positioning knob is used to fix the adjusted pick-up plate, so that it can achieve the effect of quickly adjusting according to the shape and size of the injection mold; through the joint action of the threaded tube and the sleeve in the disassembly mechanism, the mechanical arm body performs threaded movement with the sleeve above the placement plate through the threaded tube at one end, so that the clamping mechanism can be installed and removed conveniently and quickly;

[0003] When the above mechanism is in use, the two picking plates slide relative to each other on the slide rod to clamp the plastic parts, and then the positioning knob is turned to fix the picking plates, so that the shape and size of the injection mold can be quickly adjusted. However, the plastic parts are clamped and fixed only by two clamping plates, which makes the stability of the plastic parts fixation poor, causing the plastic parts to easily fall off when the robot arm moves, and then cause the plastic parts to be broken.

[0004] Therefore, we proposed that the pick-up robot arm of the injection molding machine used in the production of plastic parts can solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide a piece-picking robot arm for an injection molding machine used for producing plastic parts, so as to solve the problem proposed in the above-mentioned background technology that the plastic parts are clamped and fixed only by two clamping plates, resulting in poor stability of the fixation of the plastic parts, causing the plastic parts to easily fall off when the robot arm moves, thereby causing the plastic parts to be broken.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pick-up mechanical arm of an injection molding machine for producing plastic parts, comprising a mechanical arm body and a pick-up plate, a mounting frame is fixed to the upper surface of the pick-up plate, a clamping plate is arranged below the pick-up plate, and a motor is bolted to the middle position of the upper surface of the pick-up plate;

[0007] A piece-picking mechanical arm of an injection molding machine for producing plastic parts, further comprising:

[0008] The inside of the pickup plate is rotatably connected with a bidirectional threaded rod, and both ends of the bidirectional threaded rod penetrate the inside of the pickup plate, and the top end of the bidirectional threaded rod is fixedly connected to the output end of the motor;

[0009] A driving gear is rotatably connected to the inside of the pickup plate about the center point of the bidirectional threaded rod, and a broken gear is rotatably connected to one side of the driving gear inside the pickup plate;

[0010] A sleeve block is sleeved on the outer side of the bidirectional threaded rod, and racks are fixedly connected to the left and right sides of the sleeve block. A suction cup is installed in the middle position of the lower surface of the pickup plate, and a piston plate is sealed and slidably connected inside the suction cup.

[0011] Preferably, the sleeve block and the bidirectional threaded rod are threadedly connected, and the driving gear and the rack are meshingly connected.

[0012] Preferably, the driving gear and the incomplete gear are meshedly connected, the tops of the two clamping plates extend into the interior of the pickup plate, and the upper ends of the opposite surfaces of the two clamping plates are fixedly connected to the opposite surfaces of the two incomplete gears.

[0013] Preferably, the bottom of the bidirectional threaded rod extends into the interior of the suction cup, the piston plate is sleeved on the outside of the lower end of the bidirectional threaded rod, and the piston plate and the bidirectional threaded rod are threadedly connected, and the threads on the outside of both ends of the bidirectional threaded rod are in opposite directions.

[0014] Preferably, branch pipes are fixedly connected to the left and right sides of the pickup plate, and nozzles are installed at the bottom of the two branch pipes. A main pipe is fixed to the back of the pickup plate, and a connecting pipe is installed on the back of the main pipe. Both ends of the main pipe are fixedly connected to the two branch pipes.

[0015] Preferably, limiting grooves are provided on both sides of one end of the robotic arm body, support plates are fixed on the left and right sides of the upper surface of the mounting frame, and limiting rods are slidably connected to the inside of the two support plates, and a return spring is installed between the two limiting rods and the two support plates, and a mounting hole is provided on the top of the mounting frame, and magnets are installed on the bottom of the inner wall of the mounting hole and one end of the robotic arm body.

[0016] Preferably, the positions of the return spring and the limit slot correspond to each other, and the return spring and the limit slot are snap-fitted to each other, the positions of the two magnets correspond to each other, and the magnetic poles of the two magnets on opposite sides are opposite.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the pick-up mechanical arm of the injection molding machine for plastic parts production adopts a new structural design, the specific contents of which are as follows:

[0018] (1) The motor drives the bidirectional threaded rod to rotate, so that the sleeve drives the two racks to move downward, and the racks drive the meshing driving gears to rotate, and the driving gears drive the meshing incomplete gears to rotate, so that the two clamping plates rotate relative to each other, clamping and fixing the plastic, and then cooperating with the robot arm body to remove the plastic parts;

[0019] Furthermore, when the bidirectional threaded rod rotates, the piston plate moves upward inside the suction cup, so that negative pressure is generated inside the suction cup, and the plastic part is adsorbed and fixed, thereby improving the stability of the robot arm body when taking out the part and preventing the plastic part from falling off;

[0020] 2. Connect the external air pump to the connecting pipe, so that the external air pump can inflate the main pipe through the connecting pipe, and then the gas enters the branch pipe and blows the gas to the surface of the plastic part through the nozzle, so as to cool the plastic part with air blowing, so that the plastic part can be completely hardened, and the plastic on the plastic part can be prevented from sticking to the clamping plate, thereby improving the quality of the product;

[0021] 3. When the pickup plate needs to be replaced, just pull the limit rod to separate it from the limit slot, release the fixation to the robot arm body, and then pull down the pickup plate to separate the magnet on the robot arm body from the magnet in the mounting hole, so that the pickup plate can be quickly removed from the robot arm body and replaced with a different pickup plate, so that different pickup plates can be replaced according to plastic parts of different shapes, and it has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main cross-sectional structure of the pickup plate of the utility model;

[0023] Figure 2 This is a schematic diagram of the main cross-sectional structure of the suction cup of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure in which two clamping plates of the utility model rotate inwards;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the driving gear and the incomplete gear of the utility model;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the mounting frame and the support plate of the utility model;

[0027] Figure 6 This is a schematic diagram of the top view of the main pipe and connecting pipe of the utility model

[0028] Figure 7 For this utility model Figure 1 Enlarged structural diagram of point A in the middle

[0029] Figure 8 For this utility model Figure 1 Enlarged structural diagram at B in the middle.

[0030] In the figure: 1. Robot arm body; 2. Mounting frame; 3. Pick-up plate; 4. Clamping plate; 5. Suction cup; 6. Branch pipe; 7. Incomplete gear; 8. Driving gear; 9. Bidirectional threaded rod; 10. Rack; 11. Bushing block; 12. Piston plate; 13. Support plate; 14. Limit rod; 15. Limit groove; 16. Reset spring; 17. Mounting hole; 18. Magnet; 19. Main pipe; 20. Connecting pipe. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-Figure 8 , the utility model provides the following technical solutions: a piece-picking mechanical arm of an injection molding machine for producing plastic parts;

[0033] Embodiment 1: In order to solve the problem that the plastic parts are only clamped and fixed by two clamping plates 4 in the prior art, the stability of the plastic parts is poor, which causes the plastic parts to fall off easily when the robot arm moves, and then the plastic parts are broken, the following solution is disclosed, and the specific reference is made to Figure 1-Figure 4 and Figure 7 As shown, it includes a robot body 1 and a pickup plate 3, a mounting frame 2 is fixed to the upper surface of the pickup plate 3, a clamping plate 4 is arranged below the pickup plate 3, and a motor is bolted to the middle position of the upper surface of the pickup plate 3;

[0034] It also includes: the inside of the pickup plate 3 is rotatably connected to a bidirectional threaded rod 9, and the two ends of the bidirectional threaded rod 9 pass through the inside of the pickup plate 3, and the top of the bidirectional threaded rod 9 is fixedly connected to the output end of the motor; the inside of the pickup plate 3 is symmetrically rotatably connected to a driving gear 8 about the center point of the bidirectional threaded rod 9, and the inside of the pickup plate 3 is rotatably connected to a broken gear 7 located on one side of the driving gear 8; the outer side of the bidirectional threaded rod 9 is sleeved with a sleeve block 11, and the left and right sides of the sleeve block 11 are fixedly connected with a rack 10, the sleeve block 11 and the bidirectional threaded rod 9 are threadedly connected, and the driving gear 8 and the rack 10 are connected. The two sides of the two-way threaded rod 9 are meshedly connected, the driving gear 8 and the incomplete gear 7 are meshedly connected, the tops of the two clamping plates 4 are extended into the interior of the pickup plate 3, and the upper ends of the opposite surfaces of the two clamping plates 4 are fixedly connected to the opposite surfaces of the two incomplete gears 7, a suction cup 5 is installed in the middle position of the lower surface of the pickup plate 3, and the internal sealing sliding connection of the suction cup 5 is connected with a piston plate 12, the bottom of the two-way threaded rod 9 extends into the interior of the suction cup 5, the piston plate 12 is sleeved on the outer side of the lower end of the two-way threaded rod 9, and the piston plate 12 and the two-way threaded rod 9 are threadedly connected, and the threads on the outer sides of the two ends of the two-way threaded rod 9 are in opposite directions;

[0035] When the robot arm body 1 drives the pickup plate 3 to move to the position of the plastic body, the bottom of the suction cup 5 contacts the plastic part. At this time, the motor is started, and the motor drives the bidirectional threaded rod 9 to rotate forward, so that the sleeve block 11 drives the two racks 10 to move downward. At this time, the rack 10 drives the meshing active gear 8 to rotate, and the active gear 8 drives the meshing incomplete gear 7 to rotate, and then the two clamping plates 4 rotate inward and clamp the plastic. Then, when the bidirectional threaded rod 9 rotates forward, the piston plate 12 moves upward inside the suction cup 5. This creates negative pressure inside the suction cup 5 and absorbs and fixes the plastic part, thereby improving the stability of the robot arm body 1 when picking up the part and preventing the plastic part from falling off. The robot arm body 1 then drives the clamped plastic part to move to the specified position, and the motor drives the bidirectional threaded rod 9 to reverse, and the above operation is repeated, so that the two clamping plates 4 rotate outward and no longer clamp and fix the plastic part. At the same time, the piston plate 12 moves downward, so that the suction cup 5 no longer absorbs and fixes the plastic part, thereby releasing the fixation of the plastic part.

[0036] Embodiment 2: Different from Embodiment 1, this embodiment uses a nozzle to blow gas onto the surface of the plastic part, thereby being able to blow air to cool the plastic part. For details, refer to Figure 1 , Figure 3 and Figure 6 As shown, the left and right sides of the pickup plate 3 are fixedly connected with branch pipes 6, and nozzles are installed at the bottom of the two branch pipes 6. The back of the pickup plate 3 is fixed with a main pipe 19, and the back of the main pipe 19 is installed with a connecting pipe 20. The two ends of the main pipe 19 are fixedly connected to the two branch pipes 6.

[0037] The staff first connects the external air pump to the connecting pipe 20, so that the external air pump inflates the main pipe 19 through the connecting pipe 20, and then the gas enters the branch pipe 6, and blows the gas to the surface of the plastic part through the nozzle, so that the plastic part can be cooled by air blowing, so that the plastic part can be completely hardened, avoiding the plastic on the plastic part from sticking to the clamping plate 4, and improving the quality of the product.

[0038] Embodiment 3: Different from Embodiment 2, this embodiment uses the limit rod 14 to facilitate the removal of the pick-up plate 3 from the robot body 1 and replacement. Figure 1 , Figure 5 and Figure 8 As shown, both sides of one end of the robot body 1 are provided with limiting grooves 15, and support plates 13 are fixed on the left and right sides of the upper surface of the mounting frame 2, and the interiors of the two support plates 13 are penetrated by limiting rods 14 that are slidably connected, and a return spring 16 is installed between the two limiting rods 14 and the two support plates 13, and a mounting hole 17 is opened on the top of the mounting frame 2, and magnets 18 are installed at the bottom of the inner wall of the mounting hole 17 and one end of the robot body 1, and the return spring 16 corresponds to the position of the limiting groove 15, and the return spring 16 is engaged with the limiting groove 15, and the positions of the two magnets 18 correspond, and the magnetic poles of the opposite surfaces of the two magnets 18 are opposite;

[0039] When it is necessary to replace the picking plate 3, one only needs to pull the limit rod 14 to separate it from the limit groove 15, release the fixation of the robot arm body 1, and then pull down the picking plate 3 to separate the magnet 18 on the robot arm body 1 from the magnet 18 in the mounting hole 17, so as to facilitate the quick removal of the picking plate 3 from the robot arm body 1, and then insert one end of the robot arm body 1 into the mounting hole 17 on the picking plate 3 that is compatible with the plastic part, and use the principle of opposite magnets 18 attracting each other to make the picking plate 3 stably installed on the robot arm body 1, and at the same time, the limit rod 14 is inserted into the corresponding limit groove 15 under the elastic force of the reset spring 16, which can improve the firmness of the installation of the picking plate 3, so that different picking plates 3 can be replaced, and different picking plates 3 can be replaced according to plastic parts of different shapes, and the application range is wide.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pick-up mechanical arm for an injection molding machine for producing plastic parts, comprising a mechanical arm body (1) and a pick-up plate (3), a mounting frame (2) being fixed to the upper surface of the pick-up plate (3), a clamping plate (4) being arranged below the pick-up plate (3), and a motor being bolted to the middle position of the upper surface of the pick-up plate (3); It is characterized in that Also includes: The inside of the pickup plate (3) is rotatably connected with a bidirectional threaded rod (9), and both ends of the bidirectional threaded rod (9) penetrate the inside of the pickup plate (3), and the top end of the bidirectional threaded rod (9) is fixedly connected to the output end of the motor; The picking plate (3) is internally connected to a driving gear (8) symmetrically rotatably about the center point of the bidirectional threaded rod (9), and a broken gear (7) is internally connected to a side of the driving gear (8) rotatably in the picking plate (3); A sleeve block (11) is sleeved on the outer side of the bidirectional threaded rod (9), and racks (10) are fixedly connected to the left and right sides of the sleeve block (11). A suction cup (5) is installed in the middle position of the lower surface of the pickup plate (3), and a piston plate (12) is sealingly and slidably connected inside the suction cup (5).

2. The pick-up robot arm of an injection molding machine for producing plastic parts according to claim 1, characterized in that: The sleeve block (11) and the bidirectional threaded rod (9) are threadedly connected, and the driving gear (8) and the rack (10) are meshingly connected.

3. The pick-up robot arm of an injection molding machine for producing plastic parts according to claim 1, characterized in that: The driving gear (8) is meshingly connected with the incomplete gear (7), the tops of the two clamping plates (4) extend into the interior of the pickup plate (3), and the upper ends of the opposite surfaces of the two clamping plates (4) are fixedly connected to the opposite surfaces of the two incomplete gears (7).

4. The pick-up robot arm of an injection molding machine for producing plastic parts according to claim 1, characterized in that: The bottom of the bidirectional threaded rod (9) extends into the interior of the suction cup (5), the piston plate (12) is sleeved on the outer side of the lower end of the bidirectional threaded rod (9), and the piston plate (12) and the bidirectional threaded rod (9) are threadedly connected, and the threads on the outer sides of the two ends of the bidirectional threaded rod (9) are in opposite directions.

5. The pick-up robot arm of an injection molding machine for producing plastic parts according to claim 1, characterized in that: The left and right sides of the pickup plate (3) are fixedly connected with branch pipes (6), and nozzles are installed at the bottom of the two branch pipes (6). The back of the pickup plate (3) is fixed with a main pipe (19), and the back of the main pipe (19) is installed with a connecting pipe (20). The two ends of the main pipe (19) are fixedly connected to the two branch pipes (6).

6. The pick-up robot arm of an injection molding machine for producing plastic parts according to claim 1, characterized in that: Limiting grooves (15) are provided on both sides of one end of the robot arm body (1), support plates (13) are fixed on both sides of the upper surface of the mounting frame (2), and limiting rods (14) are slidably connected to the inside of the two support plates (13), and a return spring (16) is installed between the two limiting rods (14) and the two support plates (13), and a mounting hole (17) is provided on the top of the mounting frame (2), and magnets (18) are installed on the bottom of the inner wall of the mounting hole (17) and one end of the robot arm body (1).

7. The pick-up robot arm of an injection molding machine for producing plastic parts according to claim 6, characterized in that: The positions of the return spring (16) and the limit groove (15) correspond to each other, and the return spring (16) and the limit groove (15) are snap-fitted to each other. The positions of the two magnets (18) correspond to each other, and the magnetic poles of the opposing surfaces of the two magnets (18) are opposite to each other.

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