Automatic sprue material clamping manipulator

Abstract

The utility model relates to the technical field of injection molding, and discloses an automatic sprue material clamping manipulator which comprises a base and an overturning shaft, a base frame is fixed on the overturning shaft, a sliding block capable of moving left and right is arranged on the base frame, a liftable strip column is sleeved on the sliding block, and a finger cylinder is fixed at the bottom of the strip column; a positioning groove is formed in the lower end of the strip column, a cylinder body is fixed to the sliding block, a piston is sleeved with the cylinder body, a stop lever is fixed to one end of the piston, and the stop lever penetrates through the extending end of the cylinder body and can be inserted into the positioning groove; a pressure spring is arranged at one end of the piston away from the stop lever; an air inlet channel is formed in the end, close to the sliding block, of the cylinder body and connected with an air inlet pipe. And by arranging the elastically supported stop lever, the compressed air can be automatically inserted into the strip column positioning groove when supply of the compressed air is cut off, so that the finger cylinder can be effectively prevented from moving downwards, and the problems of collision, extrusion and the like between the manipulator and an injection molding machine and an injection mold are avoided.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to an automatic gate material gripper. Background Technology

[0002] During injection molding, gate material is inevitably generated, and the current gate material removal is mostly handled by robotic arms. When production stops or the compressed gas supply is interrupted, the gripping part of the robotic arm, lacking high-pressure gas support and subject to its own gravity, can easily slide automatically into the injection molding machine. When the injection molding machine restarts, the robotic arm is prone to collisions and squeezing with the corresponding injection mold and injection molding machine components, resulting in unnecessary cost expenditures. Utility Model Content

[0003] The purpose of this invention is to provide an automatic gate material gripper. By setting an elastic support bar, it can automatically insert into the bar positioning groove when the compressed gas supply is interrupted, which can effectively prevent the finger cylinder from moving down and avoid problems such as collision and squeezing between the robot and the injection molding machine or injection mold.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An automatic gate material gripper includes a base fixed to the upper part of the housing of an injection molding machine. A flip shaft is rotatably connected to the base. A base frame is fixed to the end of the flip shaft that extends out of the base. A slider that can move left and right is provided on the base frame. A column that can be raised and lowered is sleeved on the slider. A finger cylinder is fixed to the bottom of the column. A vertically arranged cylinder is fixed on the slider. The piston rod of the cylinder is fixedly connected to the lower end of the column.

[0006] The lower end of the bar is formed with a positioning groove. A cylinder is fixed on the slider. A piston is sleeved in the cylinder. A stop rod is fixed at one end of the piston. The stop rod can be inserted into the positioning groove through the protruding end of the cylinder. A compression spring is provided at the end of the piston away from the stop rod. An air intake channel is formed at the end of the cylinder near the slider. The air intake channel is connected to an air intake pipe.

[0007] The cylinder drives the bar column to rise and fall, which in turn moves the finger cylinder downwards. Then, the slider moves laterally, causing the finger cylinder to approach the sprue material. After the finger cylinder clamps the sprue material, the slider moves in the opposite direction to reset. The bar column moves upwards, moving the finger cylinder and the sprue material to the top of the injection molding machine. Then, the flip shaft rotates at a certain angle to tilt the base frame. The base frame tilts the bar column, and then the cylinder moves the bar column again. The finger cylinder moves outside the injection molding machine and releases the sprue material, which then falls off automatically.

[0008] High-pressure gas enters the cylinder through the intake pipe, thus pressing the piston against the compression spring. When production stops and the high-pressure gas supply is interrupted, the compression spring uses its elastic potential energy to push the piston to move. The piston drives the stop rod to insert into the positioning groove, thereby preventing the bar from automatically moving downwards due to gravity caused by the gas interruption.

[0009] The present invention is further configured such that each of the two grippers of the finger cylinder is fixed with an extended clamping block. By setting the extended clamping block, the gripping of the sprue material can be facilitated, and interference or collision between the finger cylinder, the bar column, etc. and the injection mold can be avoided.

[0010] This invention is further configured such that: a motor is fixed inside the base, a small gear is fixed on the motor shaft, the small gear meshes with a large gear, and the large gear is coaxially fixed on the flipping shaft; the motor is electrically connected to a controller. The motor drives the small gear to rotate, and the small gear drives the flipping shaft to rotate through the large gear, thereby realizing the flipping of the base. The controller can precisely control the angle of the flipping shaft's rotation.

[0011] The present invention is further configured such that the base frame is rectangular;

[0012] The base frame contains parallel support rods, and the slider is slidably connected to the support rods. A telescopic cylinder is fixed to the end of the base frame away from the tilting axis. The telescopic rod end of the cylinder is fixedly connected to the slider, and a controller controls the extension and retraction of the cylinder. The telescopic rod drives the slider to move along the support rods, thereby achieving translation of the slider.

[0013] The present invention is further configured such that a positioning block is sleeved on the support rod;

[0014] The support rod has multiple linearly distributed toothed grooves; the positioning block has a screw hole, and a protruding tooth is fitted inside the screw hole and inserted into one of the toothed grooves; the other end of the protruding tooth abuts against a stud, and the stud is screwed into the screw hole.

[0015] When the slider moves, the locating block limits its range of motion. Loosening the stud causes the protruding tooth to move downwards and disengage from the corresponding slot, allowing the locating block to move on the support rod. Once in the desired position, tightening the stud causes the protruding tooth to re-insert into another slot, thus locking the locating block in place. Adjusting the position of the locating block allows for adjustment of the slider's range of motion, adapting to the handling of sprue material for different products.

[0016] The present invention is further configured such that a vent hole is provided on the bottom surface of the cylinder. By providing the vent hole, the air pressure on the piston side of the compression spring can be prevented from balancing with the atmosphere, ensuring that the two ends of the piston are in an unequal pressure state.

[0017] The outstanding effect of this utility model is:

[0018] Compared with existing technologies, by setting up a stop bar with elastic support, it can automatically insert into the bar positioning groove when the compressed gas supply is interrupted, which can effectively prevent the finger cylinder from moving down and avoid problems such as collision and squeezing between the robot and the injection molding machine and injection mold.

[0019] By adding an extended clamping block to the finger cylinder, problems such as collision and interference can be avoided when gripping the sprue material;

[0020] The position of the positioning block can be adjusted by the cooperation of the toothed groove and the convex tooth, thereby limiting the movement of the slider and making it easier to grip the sprue material. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 A magnified view of a specific area (A);

[0023] Figure 3 for Figure 2 A magnified view of part B.

[0024] Attached label: 10, Injection molding machine;

[0025] 20. Base; 21. Tilting shaft; 22. Motor; 23. Pinion gear; 24. Large gear;

[0026] 30. Base frame; 31. Slider; 32. Bar column; 33. Telescopic cylinder; 34. Positioning block; 35. Convex tooth; 36. Stud; 37. Cylinder; 38. Support rod;

[0027] 321, positioning groove; 341, screw hole; 381, toothed groove;

[0028] 40. Finger cylinder; 41. Extended clamping block;

[0029] 50. Cylinder block; 51. Piston; 52. Stop lever; 53. Compression spring; 54. Intake passage; 55. Intake pipe; 56. Vent hole;

[0030] 90. Gating material. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] The following is for reference Figures 1 to 3 The embodiments of this utility model are described below:

[0033] An automated gripper for picking up sprue material, such as Figure 1 As shown, the system includes a base 20 fixed to the upper part of the housing of the injection molding machine 10. A rotating shaft 21 is rotatably connected to the base 20. A base frame 30 is fixed to the end of the rotating shaft 21 that extends out of the base 20. A slider 31 that can move left and right is provided on the base frame 30. A column 32 that can be raised and lowered is sleeved on the slider 31. A finger cylinder 40 is fixed to the bottom of the column 32. A vertically arranged cylinder 37 is fixed on the slider 31. The piston rod of the cylinder 37 is fixedly connected to the lower end of the column 32.

[0034] like Figure 2 As shown, the lower end of the bar 32 is formed with a positioning groove 321, the slider 31 is fixed with a cylinder 50, a piston 51 is sleeved inside the cylinder 50, a stop rod 52 is fixed at one end of the piston 51, and the stop rod 52 can be inserted into the positioning groove 321 through the protruding end of the cylinder 50; a compression spring 53 is provided at the end of the piston 51 away from the stop rod 52; an air intake channel 54 is formed at the end of the cylinder 50 near the slider 31, and an air intake pipe 55 is connected to the air intake channel 54.

[0035] The cylinder drives the bar column to rise and fall, which in turn moves the finger cylinder downwards. Then, the slider moves laterally, causing the finger cylinder to approach the sprue material 90. After the finger cylinder clamps the sprue material, the slider moves in the opposite direction to reset. The bar column moves upwards, moving the finger cylinder and the sprue material to the top of the injection molding machine. Then, the flip shaft rotates at a certain angle to tilt the base frame. The base frame tilts the bar column, and then the cylinder moves the bar column again. The finger cylinder moves outside the injection molding machine and releases the sprue material, which then falls off automatically.

[0036] High-pressure gas enters the cylinder through the intake pipe, thus pressing the piston against the compression spring. When production stops and the high-pressure gas supply is interrupted, the compression spring uses its elastic potential energy to push the piston to move. The piston drives the stop rod to insert into the positioning groove, thereby preventing the bar from automatically moving downwards due to gravity caused by the gas interruption.

[0037] like Figure 1 As shown, each of the two grippers of the finger cylinder 40 in this embodiment is fixed with an extended gripper block 41. By setting the extended gripper block, the gripping of the sprue material can be facilitated, and interference or collision between the finger cylinder, the bar column, etc. and the injection mold can be avoided.

[0038] like Figure 1 As shown, in this embodiment, a motor 22 is fixed inside the base 20. A small gear 23 is fixed on the motor shaft of the motor 22, and the small gear 23 meshes with a large gear 24. The large gear 24 is coaxially fixed on the flip shaft 21. The motor 22 is electrically connected to a controller. The motor drives the small gear to rotate, and the small gear drives the flip shaft to rotate through the large gear, thereby realizing the flipping of the base frame. The controller can precisely control the angle of the flip shaft's rotation and the angle of its return.

[0039] like Figure 1 As shown, the base frame 30 in this embodiment is rectangular;

[0040] The base frame 30 has parallel support rods 38 fixed inside, and the slider 31 is slidably connected to the support rods 38. A telescopic cylinder 33 is fixed to the end of the base frame 30 away from the flip axis 21. The end of the telescopic rod of the telescopic cylinder 33 is fixedly connected to the slider 31, and the controller controls the extension and retraction of the telescopic cylinder. The telescopic rod drives the slider to move along the support rod, thereby achieving translation of the slider.

[0041] like Figure 3 As shown, a positioning block 34 is sleeved on the support rod 38 in this embodiment;

[0042] The support rod 38 has multiple linearly distributed toothed grooves 381 formed on it; the positioning block 34 has a screw hole 341 formed on it, and a protruding tooth 35 is sleeved in the screw hole 341. The protruding tooth 35 is inserted into one of the toothed grooves 381; the other end of the protruding tooth 35 abuts against the stud 36, and the stud 36 is screwed into the screw hole 341.

[0043] When the slider moves, the locating block limits its range of motion. Loosening the stud causes the protruding tooth to move downwards and disengage from the corresponding slot, allowing the locating block to move on the support rod. Once in the desired position, tightening the stud causes the protruding tooth to re-insert into another slot, thus locking the locating block in place. Adjusting the position of the locating block allows for adjustment of the slider's range of motion, adapting to the handling of sprue material for different products.

[0044] like Figure 2 As shown, a vent hole 56 is provided on the bottom surface of the cylinder body 50 in this embodiment. By providing a vent hole, the air pressure on the piston side of the compression spring can be prevented from balancing with the atmosphere, ensuring that the two ends of the piston are in an unequal pressure state.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. An automatic gate material gripper, comprising a base (20) fixed to the upper part of the housing of an injection molding machine (10), characterized in that: A rotating shaft (21) is rotatably connected to the base (20). A base frame (30) is fixed to the end of the rotating shaft (21) that extends out of the base (20). A slider (31) that can move left and right is provided on the base frame (30). A column (32) that can be raised and lowered is sleeved on the slider (31). A finger cylinder (40) is fixed to the bottom of the column (32). A vertically arranged cylinder (37) is fixed on the slider (31). The piston rod of the cylinder (37) is fixedly connected to the lower end of the column (32). The lower end of the bar (32) is formed with a positioning groove (321). A cylinder (50) is fixed on the slider (31). A piston (51) is sleeved inside the cylinder (50). A stop rod (52) is fixed at one end of the piston (51). The stop rod (52) passes through the protruding end of the cylinder (50) and can be inserted into the positioning groove (321). A compression spring (53) is provided at the end of the piston (51) away from the stop rod (52). An air intake channel (54) is formed at the end of the cylinder (50) near the slider (31). An air intake pipe (55) is connected to the air intake channel (54).

2. The automatic gate material gripper according to claim 1, characterized in that: An extended clamping block (41) is fixed to each of the two grippers of the finger cylinder (40).

3. The automatic gate material gripper according to claim 1, characterized in that: A motor (22) is fixed inside the base (20). A small gear (23) is fixed on the motor shaft of the motor (22). The small gear (23) meshes with a large gear (24). The large gear (24) is coaxially fixed on the flip shaft (21).

4. The automatic gate material gripper according to claim 1, characterized in that: The base frame (30) is rectangular; The base frame (30) is fixed with parallel support rods (38), and the slider (31) is slidably connected to the support rods (38); a telescopic cylinder (33) is fixed at one end of the base frame (30) away from the flipping shaft (21), and the end of the telescopic rod of the telescopic cylinder (33) is fixedly connected to the slider (31).

5. The automatic gate material gripper according to claim 4, characterized in that: A positioning block (34) is sleeved on the support rod (38). The support rod (38) has multiple linearly distributed toothed grooves (381); the positioning block (34) has a screw hole (341), and a protruding tooth (35) is sleeved inside the screw hole (341). The protruding tooth (35) is inserted into one of the toothed grooves (381); the other end of the protruding tooth (35) abuts against the stud (36), and the stud (36) is screwed into the screw hole (341).

6. The automatic gate material gripper according to claim 1, characterized in that: The bottom surface of the cylinder (50) is provided with a vent (56).

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