Insert error-proof installation combination fixture

Abstract

The insert error-proofing installation combination jig belongs to the field of mechanical jigs. Through the application of the insert error-proofing installation combination jig, the photoelectric sensing system, the cylinder execution system and the status display system are controlled by the PLC system. The systems are used in coordination to realize the error-proofing arrangement and precise installation of the insert group 15, prevent the misplaced installation of similar inserts, and realize the combined application of the two operating steps of error-proofing detection and installation jig. The insert error-proofing installation combination jig has a simple and compact structure and is easy for the operator to operate, which reduces the error rate and scrap rate of manual operation and improves production efficiency.

Description

Technical Field

[0001] The invention belongs to the field of mechanical fixtures and relates to an insert error-proofing installation combined fixture, which is mainly used to prevent the positions of similar inserts with different functions in the installation process and realize the rapid installation of the inserts. Background Art

[0002] Plastic products with metal inserts have superior performance, effectively combining the comprehensive mechanical properties, electrical conductivity and electrical signal transmission functions of metals with the insulation properties of plastics. They can meet both stiffness and strength requirements and special functional requirements. Plastic parts with metal inserts are widely used in industrial manufacturing, especially in special industries such as automobiles, military industry, aviation and aerospace. For the same plastic product with different types of inserts and similar appearance shapes, accurate installation of the inserts becomes a difficulty in design and production. How to accurately, efficiently and stably position the metal inserts in the mold is a key issue in the design and molding of plastic molds with metal inserts. Summary of the invention

[0003] The purpose of the present invention is to provide an insert error-proofing combined fixture, which controls the photoelectric sensing system, the cylinder execution system and the status display system through the PLC system. The systems cooperate with each other to realize the positioning of the insert of the plastic product and the error-proofing installation of similar inserts.

[0004] The technical problem to be solved by the present invention is to provide an insert error-proofing installation combined fixture to solve the problems existing in insert error-proofing and installation during the production process of a plastic product provided with a plurality of similar inserts.

[0005] The technical solution of the present invention is: an insert error-proof installation combined fixture, whose structure includes: a frame 1, a control box 2, a workbench 3, a support block 4, a positioning block 5, a limit block A6, a limit block B7, a shoulder bolt A8, a spring A9, a shoulder bolt B10, a spring B11, a top block 12, a slide cylinder 13, a fixing block 14, an insert group 15, an alarm indicator light 16, a correct installation indicator light 17, a switch 18, an optical fiber sensor 19 and a top screw 20; its connection relationship is that the frame 1 is in surface contact with the control box 2 and is fixed by thread locking, the control box 2 is provided with a PLC system, a solenoid valve, a filter pressure regulating valve and an optical fiber sensor amplifier, the workbench 3 is in surface contact with the frame 1 and is fixed by thread locking, and a mounting boss is provided on the positioning block 5. , through hole, countersunk hole, threaded hole, primary step and secondary step, there are five mounting bosses and the top is provided with rounded corners, the through hole is in surface contact and sliding fit with the optical fiber sensor 19, the countersunk hole is in clearance fit with the optical fiber sensor 19, the threaded hole is perpendicular to the through hole and passes through, the top screw 20 is threadedly connected and locked with the threaded hole, the top screw 20 is in surface contact and tightly fit with the optical fiber sensor 19, the insert group 15 includes five independent inserts, the five independent inserts are divided into two categories, two large-aperture inserts and three small-aperture inserts, the five mounting bosses arranged on the positioning block 5, according to the distribution needs of the plastic product inserts, the two large-aperture mounting bosses are distributed on both sides, and the three small-aperture mounting bosses are grouped in the middle, in order to prevent the large-aperture The insert is installed incorrectly when it is installed into the small-aperture mounting boss. The through holes arranged on the positioning block 5 are distributed next to the small-aperture mounting boss. The depth of the first-level step is set to half the height of the limit block A6, and the depth of the second-level step is set to the height of the limit block A6. The support block 4 is provided with a clearance elliptical through hole, and the clearance elliptical through hole is clearance-matched with the optical fiber sensor 19. The positioning block 5 is in surface contact with the support block 4. The positioning block 5 and the support block 4 are in surface contact with the workbench 3 as a whole and are fixed by threaded locking. The inner wall of the spring A9 is clearance-matched with the shoulder bolt A8, and the bottom surface of the spring A9 is in surface contact with the limit block A6 and the limit block B7. The outer wall of the spring A9 is clearance-matched with the limit block B7. The shoulder bolt A8 is clearance-matched with the limit block B7. The inner wall of the spring B11 is in clearance with the shoulder bolt B10, the bottom surface of the spring B11 is in surface contact with the limit block A6 and the limit block B7, the outer wall of the spring B11 is in clearance with the limit block A6, the shoulder bolt B10 is in clearance with the limit block B7, the shoulder bolt B10 is in surface contact with the limit block A6 and is in threaded locking and fixing, the limit block A6 and the limit block B7 are respectively provided with insert installation grooves, the insert groove provided on the limit block A6 and the insert installation groove provided on the limit block B7 in the natural state form a through groove equal to the width of the insert, and when the spring A9 and the spring B11 are compressed, the through groove gap formed by the limit block A6 and the limit block B7 is expanded;During the use of the combined fixture for preventing errors in the installation of the insert, the limit block A6 and the limit block B7 are placed as an integral component on the secondary step platform set on the positioning block 5, and are in surface contact with the positioning block 5 and are limited by the primary step platform; the fixed block 14 is in surface contact with the worktable 3 and is fixed by thread locking, the slide cylinder 13 is provided with a sliding part and a fixed part, the sliding part and the fixed part are in contact and sliding cooperation by the slide connection surface, the top block 12 is in surface contact with the sliding part set on the slide cylinder 13 and is fixed by thread locking, the fixed part set on the slide cylinder 13 is in surface contact with the fixed block 14 and is fixed by thread locking, the slide cylinder 13 is connected with two transmission lines and two air pipes, and the slide The two transmission lines of the cylinder 13 are connected to the PLC system in the control box 2, the two air pipes of the slide cylinder 13 are connected to the solenoid valve in the control box 2, the connector of the solenoid valve is connected to the PLC system and the filter pressure regulating valve, the top block 12, the slide cylinder 13, the fixed block 14 and the solenoid valve in the control box 2 together constitute the cylinder execution system; the optical fiber sensor 19 is first connected to the optical fiber sensor amplifier in the control box 2 and then connected to the PLC system in the control box 2, forming a photoelectric sensing system; the alarm indicator light 16, the correct installation indicator light 17 and the switch 18 are connected to the PLC system in the control box 2, forming a status display system. ;

[0006] The working principle of the insert error-proof installation combination fixture is as follows: the entire operation is started by using the switch 18, the PLC system sends a command to the solenoid valve, the solenoid valve controls the slide cylinder 13 to drive the top block 12 to make a linear motion, the top block 12 applies a thrust to the limit block B7, causing the spring A9 and the spring B11 to be compressed, and the width of the through groove formed by the limit block A6 and the limit block B7 is widened to facilitate the insertion of the insert group 15, and the optical fiber sensor 19 is used to sense the insert group 15 to control the movement trajectory of the top block 12. When the insert is installed in the correct position, the optical fiber sensor 19 senses the insert group 15 and the installation The correct indicator light 17 flashes, and at the same time the PLC system sends a retraction command to the solenoid valve to prompt the top block 12 to perform a reset retraction movement. Under the action of the tension of spring A9 and spring B11, the limit blocks A6 and B7 return to their original state. At this time, the insert group 15 is clamped, and the operator can take out the limit block A6 and limit block B7 combination and install the insert; when the insert is installed in the wrong position, the optical fiber sensor 19 cannot sense the insert group 15 at the same time, the alarm indicator light 16 flashes, and the top block 12 does not retract. The operator needs to check the insert installation position to effectively prevent errors in the insert installation position.

[0007] The beneficial effects of the present invention are as follows: through the application of the insert anti-error installation combination jig, the photoelectric sensing system, the cylinder execution system and the status display system are controlled by the PLC system, and the various systems are used in coordination to achieve the insert group 15 anti-error arrangement and precise installation, prevent similar inserts from being misplaced, and achieve the combined application of the two operating steps of anti-error detection and installation jig. The insert anti-error installation combination jig has a simple and compact structure and is easy for the operator to operate, which reduces the error rate and scrap rate of manual operation and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The following is a detailed description of the embodiments with reference to the accompanying drawings.

[0009] Figure 1 This is the assembly diagram of the insert error-proof installation combination fixture Figure 1 .

[0010] Figure 2 This is the assembly diagram of the insert error-proof installation combination fixture Figure 2 .

[0011] Figure 3 This is the assembly diagram of the insert error-proof installation combination fixture Figure 3 .

[0012] Figure 4 This is a schematic diagram of the combination of the support block 4 and the positioning block 5 of the insert error-proof installation assembly fixture Figure 4 .

[0013] Figure 5 This is the combination diagram of the limit block A6 and limit block B7 of the insert error-proof installation assembly fixture Figure 5 .

[0014] Figure 6 This is a schematic diagram of the top block 12, slide cylinder 13 and fixed block 14 of the insert error-proof installation assembly fixture Figure 6 .

[0015] In the figure: 1 frame; 2 control box; 3 work table; 4 support block; 5 positioning block; 6 limit block A; 7 limit block B; 8 shoulder bolt A; 9 spring A; 10 shoulder bolt B; 11 spring B; 12 top block; 13 slide cylinder; 14 fixing block; 15 insert group; 16 alarm indicator light; 17 correct installation indicator light; 18 switch; 19 fiber optic sensor; 20 top screw. DETAILED DESCRIPTION

[0016] The specific embodiments of the invention are described in detail below with reference to technical texts and drawings.

[0017] The assembly process of the insert error-proof installation assembly fixture is as follows: assemble the frame 1 and the control box 2, pass the bolts through the frame 1 to lock it with the control box 2, install the PLC system, solenoid valve, filter pressure regulating valve and optical fiber sensor amplifier in the cavity of the control box 2, install the workbench 3 on the frame 1, pass the bolts through the workbench 3 to lock it with the frame 1, the positioning block 5 and the support block 4 are contacted with each other and installed on the workbench 3 as a whole, the bolts pass through the positioning block 5 and the support block 4 to lock it on the workbench 3, and the spring A9 is placed on the limit block B7. The spring B11 is placed in the countersunk hole of the limit block A6, the limit block A6 and the limit block B7 are assembled, the shoulder bolt A8 passes through the limit block A6 and is locked and fixed with the thread set on the limit block B7, the shoulder bolt B10 passes through the limit block B7 and is locked and fixed with the thread set on the limit block A6, the fixed block 14 is in contact with the workbench 3, the bolt passes through the fixed block 14 to lock and fix it on the workbench 3, the fixed part set on the slide cylinder 13 is in contact with the fixed block 14, the bolt passes through the fixed part set on the slide cylinder 13 to lock and fix it with the fixed block 14 The top block 12 is assembled with the sliding part of the slide cylinder 13, and the bolt passes through the top block 12 to lock and fix it with the sliding part of the slide cylinder 13. The top block 12 and the sliding part of the slide cylinder 13 are installed as a whole on the fixed part of the slide cylinder 13. The two transmission lines led out from the slide cylinder 13 are connected to the PLC system in the control box 2. The two air pipes led out from the slide cylinder 13 are connected to the solenoid valve in the control box 2. The connector of the solenoid valve is connected to the PLC system and the filter pressure regulating valve. The alarm indicator 16, the correct installation indicator 17 and the switch 1 8 respectively lead out two wires to be directly connected to the PLC system, the optical fiber sensor 19 is inserted from the control box, one end of the optical fiber sensor 19 passes through the elliptical through hole set on the support block 4 and the countersunk hole set on the positioning block 5, the optical fiber sensor 19 is slidably matched with the through hole set on the support positioning block 5 and is not higher than the surface of the positioning block 5, the top screw 20 is screwed into the threaded hole set on the positioning block 5 to contact the surface of the optical fiber sensor 19 and position it, the other end of the optical fiber sensor 19 is connected to the optical fiber sensor amplifier installed in the control box 2, and the lead-out wire is connected to the PLC system.

[0018] The operation implementation process is that the limit block A6 and the limit block B7 are placed as an integral component on the secondary step platform set on the positioning block 5. After the switch 18 is pressed, the PLC system receives the start command, and then the PLC system sends a command to the solenoid valve so that the sliding part set on the slide cylinder 13 drives the top block 12 to move in a straight line. The top block 12 contacts the side wall of the limit block B7 and applies thrust to the limit block B7. The spring A9 and the spring B11 are compressed, and the width of the through groove formed by the limit block A6 and the limit block B7 is widened. The five inserts in the insert group 15 are respectively placed, and the switch 18 is pressed. The first situation: the insert is installed in the correct position, the optical fiber sensor 19 senses the insert group 15, and transmits a signal to the PLC system at the same time. The correct installation indicator light 17 flashes, and the PLC system sends a retract command to the solenoid valve. The solenoid valve transmits the command to the slide cylinder 13, and the slide cylinder 13 is set The sliding part drives the top block 12 to retreat and make a linear motion, and the thrust applied by the top block 12 to the limit block B7 is cancelled. Under the action of the tension of the spring A9 and the spring B11, the limit blocks A6 and the limit blocks B7 return to their original state, and the through groove formed by the limit blocks A6 and the limit blocks B7 is reset to clamp the inserts in the insert group 15. The operator can take out the insert group 15, the limit blocks A6 and the limit blocks B7 as a whole, and use the limit blocks A6 and the limit blocks B7 to install the insert group 15 in the mold to be produced; the second situation: the insert is installed in the wrong position, the optical fiber sensor 19 cannot sense the insert group 15 at the same time, the PLC system does not receive the perception signal, the alarm indicator light 16 flashes, the top block 12 does not retreat, and the operator needs to check the insert installation position. When the operator corrects the position of the insert, the correct installation indicator light 17 flashes, and the first situation is entered, and then the next step of insert installation can be carried out.

[0019] The above is a superior implementation mode of the present invention. It should be pointed out that for technicians in the technical field to which the present invention belongs, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. The insert error-proof installation assembly fixture is characterized by The structure includes: a frame (1), a control box (2), a worktable (3), a support block (4), a positioning block (5), a limit block A (6), a limit block B (7), a shoulder bolt A (8), a spring A (9), a shoulder bolt B (10), a spring B (11), a top block (12), a slide cylinder (13), a fixing block (14), an insert group (15), an alarm indicator light (16), a correct installation indicator light (17), a switch (18), an optical fiber sensor (19) and a top screw (20). The connection relationship is that the control box (2) is provided with a PLC system, a solenoid valve, a filter pressure regulating valve and an optical fiber sensor amplifier, and the positioning block (5) is provided with a mounting boss, a through hole, a recessed hole, a threaded hole, a first-level step and a second-level step. The mounting bosses are in five locations and have rounded corners on the top. The through hole is in surface contact and sliding fit with the optical fiber sensor (19), the recessed hole is in clearance fit with the optical fiber sensor (19), the threaded hole is perpendicular to the through hole and passes through, and the top screw (20) is in contact with the threaded hole. The threaded connection is locked and fixed, and the top screw (20) is in close contact with the surface of the optical fiber sensor (19). The insert group (15) includes five independent inserts, and the five independent inserts are divided into two categories, two large-aperture inserts and three small-aperture inserts. The five mounting bosses provided on the positioning block (5) are distributed on both sides according to the distribution requirements of the plastic product inserts, and the three small-aperture mounting bosses are grouped in the middle. In order to prevent the large-aperture insert from being installed into the small-aperture mounting boss and causing the insert to be installed incorrectly, the positioning block (5) is provided with a plurality of mounting bosses. The through holes arranged on the block (5) are distributed beside the small-aperture mounting boss, the depth of the first-stage stepped platform is set to be half the height of the limit block A (6), and the depth of the second-stage stepped platform is set to be the height of the limit block A (6); a clearance elliptical through hole is arranged on the support block (4), the clearance elliptical through hole is clearance-matched with the optical fiber sensor (19), the positioning block (5) is in surface contact with the support block (4), and the positioning block (5) and the support block (4) are in surface contact with the workbench (3) as a whole and are fixed by thread locking;The inner wall of the spring A (9) is loosely matched with the shoulder bolt A (8), the bottom surface of the spring A (9) is in surface contact with the stop block A (6) and the stop block B (7), the outer wall of the spring A (9) is loosely matched with the stop block B (7), the shoulder bolt A (8) is loosely matched with the stop block A (6), the shoulder bolt A (8) is in surface contact with the stop block B (7) and is fixed by thread locking, the inner wall of the spring B (11) is loosely matched with the shoulder bolt B (10), the bottom surface of the spring B (11) is in surface contact with the stop block A (6) and the stop block B (7), the outer wall of the spring B (11) is loosely matched with the stop block A ( 6) clearance fit, the shoulder bolt B (10) and the limit block B (7) are clearance fit, the shoulder bolt B (10) and the limit block A (6) are in surface contact and fixed by thread locking, the limit block A (6) and the limit block B (7) are respectively provided with insert installation grooves, and the insert groove provided on the limit block A (6) and the insert installation groove provided on the limit block B (7) in the natural state form a through groove with the same width as the insert, and when the spring A (9) and the spring B (11) are compressed, the through groove gap formed by the limit block A (6) and the limit block B (7) is expanded; the fixed block (14) and the workbench plate (3) are in surface contact. The sliding cylinder (13) is provided with a sliding portion and a fixed portion, the sliding portion and the fixed portion are slidably matched by a slideway connection surface contact, the top block (12) and the sliding portion provided on the sliding cylinder (13) are surface contacted and fixed by thread locking, the fixed portion provided on the sliding cylinder (13) and the fixed block (14) are surface contacted and fixed by thread locking, the sliding cylinder (13) is connected to two transmission lines and two air pipes, the two transmission lines of the sliding cylinder (13) are connected to the PLC system in the control box (2), and the two air pipes of the sliding cylinder (13) are connected to the control box (2). The solenoid valve in the box (2) is connected to the connector of the solenoid valve on the PLC system and the filter pressure regulating valve. The top block (12), the slide cylinder (13), the fixed block (14) and the solenoid valve in the control box (2) together constitute a cylinder execution system; the optical fiber sensor (19) is first connected to the optical fiber sensor amplifier in the control box (2) and then connected to the PLC system in the control box (2), forming a photoelectric sensing system; the alarm indicator light (16), the correct installation indicator light (17) and the switch (18) are connected to the PLC system in the control box (2), forming a status display system. ;

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