Automatic correction device for injection molded part

Abstract

An automatic correction device for injection molding parts comprises a workbench, a rotary table is rotationally arranged on the workbench, correction molds are fixedly installed on the rotary table and circumferentially arranged around the circle center of the rotary table, a supporting frame is arranged on the portion, on one side of the rotary table, of the workbench, a pressing air cylinder is fixedly installed on the supporting frame, and a pressing plate is connected with an output shaft of the pressing air cylinder. The device is used for pressing a to-be-corrected injection molding part to correction molds on a rotary table, a top plate is correspondingly arranged at each correction mold on the rotary table, the correction molds penetrate through the top plates, the top plates are fixedly connected with a connecting plate through two supporting columns penetrating through the rotary table, and an ejection air cylinder is arranged at the injection molding part discharging position on a workbench below the connecting plate. The ejection air cylinder is used for driving the connecting plate to push the ejection plate to move in the demolding direction of the correction mold so as to eject the corrected injection molding part arranged on the correction mold in a sleeving mode. The invention aims to avoid low efficiency and confusion of correction states of injection molded parts caused by manual operation.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding processing equipment, in particular to an automatic correction device for injection molding parts. Background Art

[0002] Injection molded parts are created within an injection mold through the injection molding process. The temperature of the molded part when removed from the mold is often higher than room temperature, making it susceptible to deformation due to thermal expansion and contraction. To prevent deformation during cooling, the molded part, freshly removed from the injection molding machine, must be placed in a dedicated anti-deformation mold for alignment. The molded part can then be removed only after it has completely cooled.

[0003] Currently, this calibration process relies on manual labor. Workers remove the molded parts from the injection molding machine and insert them into the anti-deformation mold. When there are a large number of parts to be calibrated, workers must first arrange multiple anti-deformation molds into an array and then insert the molded parts one by one.

[0004] However, manual correction has obvious shortcomings: when faced with a large number of parts to be corrected, manual operation is inefficient; and it is easy to confuse the correction status of the workpiece (such as mistaking an uncorrected part for a corrected part), resulting in quality defects in the injection molded parts. Summary of the Invention

[0005] The present invention aims to provide an automatic correction device for injection molded parts, which avoids the low efficiency and confusion of the correction status of the injection molded parts caused by manual operation.

[0006] In order to solve the above technical problems, the specific scheme adopted by the present invention is: it includes a workbench, a turntable is rotatably provided on the workbench, a correction mold is fixedly installed on the turntable, the correction mold is circumferentially arranged around the center of the turntable, a support frame is provided on the workbench on one side of the turntable, a pressing cylinder is fixedly installed on the support frame, and the pressing plate is connected to the output shaft of the pressing cylinder, and is used to press the injection molded part to be corrected onto the correction mold on the turntable. A top plate is correspondingly provided at each correction mold on the turntable, and the correction mold passes through the top plate. The top plate is fixedly connected to the connecting plate through two support columns passing through the turntable. An ejection cylinder is provided at the injection molding part unloading position on the workbench below the connecting plate, and the ejection cylinder is used to drive the connecting plate and then push the top plate to move along the demolding direction of the correction mold to eject the corrected injection molded part sleeved on the correction mold.

[0007] As a further optimization of the automatic correction device for injection molded parts of the present invention, a fan array is provided on the turntable above the rotation path of the correction mold.

[0008] As a further optimization of the automatic correction device for injection molded parts of the present invention: a first linear cylinder is provided on the support frame, a first robotic arm is slidably provided on the first linear cylinder, a first clamp is provided at the end of the forearm of the first robotic arm, and the first linear cylinder is used to drive the first robotic arm to move along the first linear cylinder, thereby transferring the injection molded part to be corrected clamped by the first clamp to a specified position.

[0009] As a further optimization of the automatic correction device for injection molded parts of the present invention: a second linear cylinder is provided on the support frame, a second robotic arm is slidably provided on the second linear cylinder, a second clamp is provided at the end of the forearm of the second robotic arm, and the second linear cylinder is used to drive the second robotic arm to move along the second linear cylinder, thereby transferring the injection molded part to be corrected clamped by the second clamp to the correction mold.

[0010] As a further optimization of the automatic correction device for injection molded parts of the present invention: a transfer module is provided on the path of the second linear cylinder driving the second robotic arm to move, the transfer module is used to adjust the posture of the injection molded part to be corrected to correspond to the correction mold on the turntable, the transfer module includes a rotating cylinder, the output end of the rotating cylinder is connected to the rotating platform, and the transfer mold is provided on the rotating platform.

[0011] As a further optimization of the automatic correction device for injection molded parts of the present invention: a third robotic arm is slidably installed at the corresponding position of the track beam above the transfer module, and a third clamp is provided at the end of the forearm of the third robotic arm. The third clamp is used to clamp the injection molded parts in the injection molding machine and transfer the injection molded parts in the injection molding machine to the transfer mold of the transfer module under the action of the third robotic arm.

[0012] As a further optimization of the automatic correction device for an injection molded part of the present invention, the contact portions of the first clamp, the second clamp and the third clamp with the injection molded part are all provided with cushion layers.

[0013] As a further optimization of the automatic correction device for an injection molded part of the present invention: the cushion layer is heat-resistant silicone or polyurethane elastomer, and the contact surface between the cushion layer and the injection molded part is provided with anti-slip lines.

[0014] Beneficial Effects: This invention achieves fully automated injection mold calibration by placing a calibration mold on a rotating turntable and using a pressing cylinder to drive a pressing plate to press the injection molded part to be calibrated into the calibration mold. After the injection molded part has completely cooled on the turntable, an ejection cylinder drives the ejector plate to complete the calibration and eject the injection molded part. The turntable workstation design allows the parts to be calibrated to enter the calibration mold sequentially, and the calibrated parts to be removed in sequence, improving work efficiency while avoiding confusion over the calibration status of the injection molded part caused by manual operation.

[0015] The preferred technical solution of the present invention realizes the transfer of the injection molded parts in the injection molding machine to the transfer module through the cooperation of components such as the first robotic arm, the second robotic arm, the third robotic arm and the transfer module, and then the injection molded parts to be corrected on the transfer module are transferred to the correction mold on the turntable, and finally the corrected injection molded parts on the correction mold are transferred to the designated position. The whole process is mechanized, which further improves the efficiency of injection molded part correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the automatic correction device of the injection molded part of the present invention;

[0017] Figure 2 is a cross-sectional view of the interior of the workbench of the present invention;

[0018] Figure 3 This is a schematic diagram of the ejection cylinder of the present invention pushing out the top plate;

[0019] Markings in the figure: 1. Workbench, 2. Rotating cylinder, 3. Rotating platform, 4. Transfer mold, 5. Third fixture, 6. Third robotic arm, 7. Support frame, 8. Second linear cylinder, 9. Second robotic arm, 10. Pressing cylinder, 11. First robotic arm, 12. First linear cylinder, 13. Fan array, 14. Top plate, 15. Turntable, 16. Correction mold, 17. First fixture, 18. Pressing plate, 19. Second fixture, 20. Pad, 21. Ejection cylinder, 22. Support column, 23. Connecting plate, 24. Transfer module. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, an automatic correction device for injection molded parts includes a workbench 1, which provides a stable working platform for correction of injection molded parts.

[0021] A turntable 15 is rotatably provided on the workbench 1, and a correction mold 16 is fixedly installed on the turntable 15. In this embodiment, the correction mold 16 is two square columns, and the corresponding injection molded parts to be corrected are rectangular injection molded parts. The correction mold 16 is arranged circumferentially around the center of the turntable 15. The turntable 15 type workstation allows the injection molded parts to be corrected to be sequentially inserted into the correction mold 16 from the injection molding part loading position of the workbench 1. The injection molded parts rotate on the turntable 15 for cooling and correction. After the correction is completed, the injection molded parts are sequentially removed from the injection molding part unloading position of the workbench 1, avoiding confusion in the correction status of the injection molded parts, ensuring similar cooling time for the injection molded parts, and improving the quality stability of the injection molded parts.

[0022] like Figure 2 and Figure 3As shown, a top plate 14 is provided at each correction mold 16 on the turntable 15. The correction mold 16 extends through the top plate 14 and is fixedly connected to a connecting plate 23 via two support columns 22 extending through the turntable 15. An ejector cylinder 21 is provided at the injection molding unloading position on the workbench 1 below the connecting plate 23. The ejector cylinder 21 drives the connecting plate 23, which in turn pushes the top plate 14 along the demolding direction of the correction mold 16 to eject the corrected injection molded part from the correction mold 16. The corrected injection molded part often fits tightly against the correction mold 16, making it difficult to remove the injection molded part from the correction mold 16. The ejector cylinder 21 pushes the top plate 14 in this manner, making it easy to remove the injection molded part from the correction mold 16.

[0023] A support frame 7 is mounted on the workbench 1 on one side of the turntable 15. A pressing cylinder 10 is fixedly mounted on the support frame 7, and a pressing plate 18 is connected to the output shaft of the pressing cylinder 10. The support frame 7 provides a stable mounting platform for the pressing cylinder 10, the first linear slide, the second linear slide, and other related components. The pressing cylinder 10 drives the pressing plate 18 to completely slide the injection molded part to be corrected onto the correction mold 16 on the turntable 15.

[0024] A fan array 13 is provided above the rotation path of the correction mold 16 on the turntable 15. The fan array 13 drives the air flow at the correction mold to promote the cooling correction of the injection molded part.

[0025] A first linear cylinder 12 is mounted on the support frame 7. A first robotic arm 11 is slidably mounted on the first linear cylinder 12. A first clamp 17 is mounted at the forearm end of the first robotic arm 11. The first clamp 17 is used to clamp the corrected injection molded part ejected by the ejector plate 14. The first robotic arm 11 drives the first clamp 17 to move the corrected injection molded part away from the correction mold 16. The first linear cylinder 12 drives the first robotic arm 11 to move along the first linear cylinder 12, thereby transferring the corrected injection molded part to a designated location (such as a storage box, packaging bag, etc.).

[0026] A second linear cylinder 8 is mounted on the support frame 7, on which a second robotic arm 9 is slidably mounted. A second clamp 19 is mounted at the forearm end of the second robotic arm 9. The second clamp 19 is used to clamp the injection molded part to be corrected at the transfer module 24. The second robotic arm 9 drives the second clamp 19 to move the injection molded part away from the transfer mold 4 of the transfer module 24. The second linear cylinder 8 drives the second robotic arm 9 to move along the second linear cylinder 8 to the turntable 15. The second robotic arm 9 drives the second clamp 19 to place the injection molded part to be corrected on the correction mold 16 on the turntable 15.

[0027] A transfer module 24 is provided on the path where the second linear cylinder 8 drives the second robotic arm 9 to move. A third robotic arm 6 is slidably installed on the corresponding position of the track beam above the transfer module 24. A third clamp 5 is provided at the forearm end of the third robotic arm 6.

[0028] Since the orientation of the injection molded parts in the injection molding machine does not match the orientation of the correction mold 16 on the turntable 15 and the injection molding machine is far away from the correction station, directly transferring the injection molded parts from the injection molding machine to the turntable 15 not only wastes time but also takes up more working space. Therefore, a transfer module 24 is set to adjust the orientation of the injection molded parts, and the journey of the injection molded parts from the injection molding machine to the turntable 15 is decomposed into the journey from the injection molding machine to the transfer module 24 and then from the transfer module 24 to the turntable 15.

[0029] Transfer module 24 includes a rotary cylinder 2, the output of which is connected to a rotating platform 3, on which a transfer mold 4 is mounted. A third robotic arm 6 drives a third clamp 5 to grip the molded part in the injection molding machine and transfer it to the transfer mold 4. The rotary cylinder 2 rotates the rotating platform 3, thereby adjusting the molded part on the transfer mold 4 to the proper position.

[0030] The first, second, and third clamps 17, 19, and 5 are all equipped with a cushioning layer 20 at the contact points with the molded part. This cushioning layer 20 is made of heat-resistant silicone or polyurethane elastomer and features anti-slip ridges on the contact surface with the molded part. This cushioning layer 20 prevents scratches and damage to the molded part caused by the gripping and friction of the clamps during handling. The anti-slip ridges enhance friction between the cushioning layer 20 and the molded part, preventing it from falling during handling and transfer.

[0031] The method of using the automatic correction device for injection molded parts of the present invention is as follows: first, the third robotic arm 6 grabs the molded injection molded part from the injection molding machine through the third clamp 5 and transfers it to the transfer mold 4 of the transfer module 24; secondly, the rotating cylinder 2 drives the turntable and drives the transfer mold 4 to rotate, so that the orientation of the injection molded part on the transfer mold 4 matches the positioning of the correction mold 16 on the turntable 15; then, the second robotic arm 9 grabs the injection molded part from the transfer mold 4 through the second clamp 19 and transfers it to the correction mold 16 on the turntable 15; at this time, the turntable 15 rotates to send the correction mold 16 carrying the injection molded part to the bottom of the pressing plate 18, and the pressing cylinder 10 drives the pressing plate 18 to press down, so that the injection molded part is completely fitted and fixed on the correction mold 16; then, the process of transferring the injection molded part to the turntable 15 is repeated, and multiple injection molded parts to be corrected are placed on the turntable 15. The plastic parts are sequentially placed on different correction molds 16 of the turntable 15, and the turntable 15 rotates continuously, and the injection molded parts are cooled naturally in the air; when the turntable 15 rotates the injection molded parts to the fan array 13 area, the fan is started, and the air flow is forced to accelerate the cooling process of the injection molded parts. Natural cooling is first performed and then the fan array 13 is used to assist cooling, thereby avoiding the problem of large temperature difference between the surface and the interior caused by rapid cooling or low efficiency caused by natural cooling throughout the process; the injection molded parts after correction are rotated by the turntable 15 to the bottom of the first clamp 17, and the ejection cylinder 21 drives the ejector plate 14 to lift the corrected injection molded parts from the correction mold 16, and the first robot arm 11 moves the corrected injection molded parts to the designated position through the first clamp 17; finally, the process of removing the injection molded parts from the turntable 15 is repeated to realize the sequential removal of the corrected injection molded parts.

Claims

1. An automatic correction device for injection molded parts, characterized in that: The invention comprises a workbench (1), a turntable (15) is rotatably provided on the workbench (1), a correction mold (16) is fixedly installed on the turntable (15), and the correction mold (16) is arranged circumferentially around the center of the turntable (15). A support frame (7) is provided on the workbench (1) on one side of the turntable (15), and a pressing cylinder (10) is fixedly installed on the support frame (7). A pressing plate (18) is connected to the output shaft of the pressing cylinder (10) and is used to press the injection molded part to be corrected onto the correction mold (16) on the turntable (15). Each of the correction molds on the turntable (15) is provided with a support frame (7). A top plate (14) is provided corresponding to the correction mold (16), the correction mold (16) passes through the top plate (14), the top plate (14) is fixedly connected to the connecting plate (23) through two support columns (22) passing through the turntable (15), and an ejection cylinder (21) is provided at the injection molding part unloading position on the workbench (1) below the connecting plate (23). The ejection cylinder (21) is used to drive the connecting plate (23) and then push the top plate (14) to move along the demoulding direction of the correction mold (16) to eject the corrected injection molding part sleeved on the correction mold (16).

2. The automatic correction device for injection molded parts according to claim 1, characterized in that: A fan array (13) is provided above the rotation path of the correction mold (16) on the turntable (15).

3. The automatic correction device for injection molded parts according to claim 1, characterized in that: A first linear cylinder (12) is provided on the support frame (7), a first mechanical arm (11) is slidably provided on the first linear cylinder (12), a first clamp (17) is provided at the forearm end of the first mechanical arm (11), and the first linear cylinder (12) is used to drive the first mechanical arm (11) to move along the first linear cylinder (12), thereby transferring the injection molded part to be corrected, which is clamped by the first clamp (17), to a designated position.

4. The automatic correction device for injection molded parts according to claim 1, characterized in that: A second linear cylinder (8) is provided on the support frame (7), a second mechanical arm (9) is slidably provided on the second linear cylinder (8), a second clamp (19) is provided at the forearm end of the second mechanical arm (9), and the second linear cylinder (8) is used to drive the second mechanical arm (9) to move along the second linear cylinder (8), thereby transferring the injection molded part to be corrected, which is clamped by the second clamp (19), to the correction mold (16).

5. The automatic correction device for injection molded parts according to claim 4, characterized in that: A transfer module (24) is provided on the path along which the second linear cylinder (8) drives the second mechanical arm (9) to move. The transfer module (2) is used to adjust the posture of the injection molded part to be corrected to correspond to the correction mold (16) on the turntable (15). The transfer module (24) includes a rotary cylinder (2). The output end of the rotary cylinder (2) is connected to a rotary platform (3). The rotary platform (3) is provided with a transfer mold (4).

6. The automatic correction device for injection molded parts according to claim 5, characterized in that: A third mechanical arm (6) is slidably mounted at a corresponding position of the track beam above the transfer module (24); a third clamp (5) is provided at the forearm end of the third mechanical arm (6); the third clamp (5) is used to clamp the injection molded parts in the injection molding machine and transfer the injection molded parts in the injection molding machine to the transfer mold (4) of the transfer module (24) under the action of the third mechanical arm (6).

7. An automatic correction device for injection molded parts according to claims 3 and 6, characterized in that: Parts of the first clamp (17), the second clamp (19) and the third clamp (5) in contact with the injection molded part are all provided with cushion layers (20).

8. The automatic correction device for injection molded parts according to claim 7, characterized in that: The cushion layer (20) is made of heat-resistant silica gel or polyurethane elastomer, and the contact surface between the cushion layer (20) and the injection molded part is provided with anti-slip lines.

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