Jig for preventing needle withdrawing of rubber shell

Abstract

The utility model belongs to the field of needle withdrawing prevention jigs, particularly relates to a needle withdrawing prevention jig for a rubber shell, and aims to solve the problems that an operator cannot conveniently, quickly and effectively distinguish which plug and jig are matched to form a group for use, the situation that the plug is mistakenly placed to conduct the jig is easy to occur, and the purpose of automatic locking is inconvenient to realize in the prior art. In order to solve the problems that manpower and material resources are increased, the phenomenon that a plug falls off from a jig occurs, and production errors are increased, the following scheme is provided, the jig comprises a jig head, the top of the jig head is provided with a first probe, and the top side of the jig head is provided with a containing groove for the plug to be inserted and placed in. When the automatic locking device is used, an operator can conveniently, quickly and effectively distinguish which plug and the jig are matched to form a group for use, the situation that the plug is mistakenly placed and the jig is conducted is not easy to occur, the purpose of automatic locking is conveniently realized, manpower and material resources are reduced, the phenomenon that the plug falls off from the jig is avoided, and production errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-withdrawal needle fixtures, in particular to an anti-withdrawal needle fixture for a plastic shell. Background Art

[0002] An anti-withdrawal needle fixture is a tool used in the processes of machining and assembly, mainly for preventing threaded connections or other types of connections from withdrawing or loosening when subjected to axial forces.

[0003] In the current automobile wire harness processing technology, how to ensure that the terminals of the automobile wire harness connector are in place has become a thorny and long-term problem for wire harness manufacturers. By designing a CPG fixture and a CPG wire insertion induction and pull-back system, it is possible to reliably prevent the defect of terminals not being in place during the wire harness insertion process. However, most of the existing anti-withdrawal needle fixtures have the following problems:

[0004] Since it is not convenient for operators to quickly and effectively identify which plug and fixture are used in a set, and it is easy to have the situation of the plug being placed in the wrong conduction fixture. At the same time, it is not convenient to achieve the purpose of automatic locking, which not only increases labor and material resources, but also there will be a phenomenon that the plug falls off from the fixture, increasing production errors.

[0005] In view of the above problems, the present utility model document proposes an anti-withdrawal needle fixture for a plastic shell. Content of the Utility Model

[0006] The utility model provides an anti-withdrawal needle fixture for a plastic shell, which solves the problems existing in the prior art that it is not convenient for operators to quickly and effectively identify which plug and fixture are used in a set, and it is easy to have the situation of the plug being placed in the wrong conduction fixture. At the same time, it is not convenient to achieve the purpose of automatic locking, which not only increases labor and material resources, but also there will be a phenomenon that the plug falls off from the fixture, increasing production errors.

[0007] The utility model provides the following technical solutions:

[0008] An anti-withdrawal needle fixture for a plastic shell, comprising:

[0009] A fixture head, on the top of which a first probe is provided. A placement groove for plug insertion is opened on the top side of the fixture head, and two second probes and two third probes are respectively arranged on the bottom side of the inner wall of the placement groove.

[0010] An automatic locking mechanism, which is arranged inside the fixture head for locking and fixing the plug in the placement groove.

[0011] A pull-back mechanism, which is arranged outside the fixture head for pulling and restoring the fixture head.

[0012] In a possible design, the automatic locking mechanism includes two cylinder locks, two protective covers, a plurality of first round head screws, and a plurality of headless machine screws. Two installation cavities are formed inside the jig head, and the two cylinder locks are respectively fixedly installed inside the two installation cavities for automatically locking the plug.

[0013] In a possible design, the two protective covers are both fixedly installed on the top of the jig head through a plurality of first round head screws for covering and protecting the cylinder locks. Two threaded holes are respectively formed on both sides of the jig head, and each headless machine screw is threadedly connected inside the threaded hole for fixing the cylinder lock.

[0014] In a possible design, the pulling-back mechanism includes a top frame, a bottom frame, two connecting plates, a plurality of first flat head screws, a plurality of second flat head screws, two wire thread inserts, two screw rods, and two springs. The top frame is arranged outside the jig head, the bottom frame is arranged at the bottom of the jig head, and the top frame and the bottom frame are connected by the two connecting plates. The two connecting plates are both fixedly installed on the top frame and the bottom frame through a plurality of first flat head screws and a plurality of second flat head screws.

[0015] In a possible design, two installation holes are formed on the bottom side of the jig head, the two wire thread inserts are respectively fixedly installed on the inner walls of the two installation holes, two connection grooves communicating with the installation holes are formed inside the bottom frame, a screw rod is slidably connected inside each connection groove, one end outer wall of the screw rod is threadedly connected with the inner wall of the wire thread insert, and the spring is sleeved on the outer wall of the screw rod.

[0016] In a possible design, a name sticker is arranged on one side of one of the connecting plates for identifying the jig name.

[0017] In a possible design, two green LED lights are arranged on the top of the top frame, and two red LED lights are arranged on the top of the jig head.

[0018] In a possible design, two brackets are fixedly arranged on one side of the jig head, and a micro switch is fixedly installed on one side of each bracket through two second round head screws.

[0019] In this application, during use, first, the jig head serves as the main part of the entire jig. The probe 1 designed on its top is used to initially contact or detect the plug. The placement groove opened on the top side of the jig head is specifically designed for the plug to ensure that the plug can be accurately inserted and positioned. By means of shape restriction, the inner cavity of the placement groove can be designed according to the shape of the plug to ensure the insertion direction of the plug and prevent plugs of other shapes from being inserted. The function of shape restriction allows the operator to quickly and effectively identify which plug and jig are used in a set, and it is not easy to have the situation where the wrong plug is inserted and the jig is conducted, which is beneficial to effectively saving manpower and material resources and reducing operation errors. The probe 2 and the probe 3 are installed on the bottom side of the inner wall of the placement groove and are used for electrical connection with the plug after it is inserted for necessary detection or signal transmission;

[0020] When the plug is fully inserted into the placement groove, the plug will squeeze the probe 2 and the probe 3. At this time, a signal will be transmitted to the two cylinder locks installed inside the installation cavity. The cylinder locks will receive the control signal, automatically extend the locking tongues, and firmly lock the plug in the placement groove to prevent the plug from accidentally withdrawing during the test or assembly process and achieve the purpose of fixing the plug to prevent it from falling off. Automatic locking not only reduces manpower and material resources but also effectively prevents the plug from being inserted into the jig insufficiently or falling off from the jig, reducing production errors. The protective cover is fixed to the top of the jig head by the first round head screw. Its main function is to protect the cylinder lock from external interference and damage and ensure the long-term stable operation of the cylinder lock. The headless machine screw further strengthens the installation of the cylinder lock and is threadedly connected into the threaded holes on both sides of the jig head to provide additional stability and safety. Then the operator installs the terminal into the empty plug. When the terminal is inserted into the plug and conducts with the probe, the green LED light will turn on. The green LED light indicates that the jig is in a normal working state or a ready state. The red LED light on the top of the jig head is used for warning, such as detecting wrong operations, the plug not being correctly inserted, or the cylinder lock not being locked, etc., so that the operator can timely find out which terminal is not installed in place, reducing the occurrence of problems and production errors;

[0021] After the plug terminals are successfully installed, the operator pulls the plug wire. Since the top frame and the bottom frame are firmly connected by two connecting plates, the first flat head screw, and the second flat head screw, forming the external support structure of the jig. When an external force acts on the jig head, such as manually pulling out the plug, the jig head will displace relative to the bottom frame, causing the plug to drive the jig head above the top frame. When the pulling reaches the required height and force during production, the microswitch will form a circuit and send a signal. The microswitch is installed on the brackets on both sides of the jig head and is used to detect specific position or state changes of the jig head to perform corresponding operations or stop the current operation, ensuring the safety and accuracy of the jig operation. Then, the operator observes the signals given by the microswitch, probe two, and probe three to confirm the detachment situation of the terminals and terminal wires when the pulling force on the plug wire reaches a certain level. After observing the signals for a certain period of time and confirming that the installation of the plug terminals is okay, the operator releases the hand. At this time, the spring sleeved on the screw starts to function, and using its elastic force, it pulls the jig head back to the original position, realizing the automatic reset function, making the jig return to its original state, effectively improving the product quality reliability, reducing the defective rate, and enhancing the competitiveness. The screw is connected to the installation hole at the bottom of the jig head through a wire thread insert to ensure the effective transmission of the spring force and improve the applicability.

[0022] In the present utility model, for the described rubber shell anti-withdrawal pin jig, the plug can be firmly locked in the placement groove through the automatic locking mechanism, preventing the plug from accidentally withdrawing during the testing or assembly process and achieving the purpose of fixing the plug. This not only reduces manpower and material resources but also effectively prevents the plug from being inserted into the jig insufficiently or falling off the jig.

[0023] In the present utility model, for the described rubber shell anti-withdrawal pin jig, through the pulling-back mechanism, it can confirm the detachment situation of the terminals and terminal wires when the pulling force on the plug wire reaches a certain level. At the same time, it can realize the automatic reset function, making the jig return to its original state, effectively improving the product quality reliability, reducing the defective rate, and enhancing the competitiveness.

[0024] In the present utility model, it is convenient for the operator to quickly and effectively identify which plug and jig are used in a set, and it is not easy to have the situation of the plug being inserted into the wrong conducting jig. At the same time, it is convenient to achieve the purpose of automatic locking, which not only reduces manpower and material resources but also avoids the phenomenon of the plug falling off the jig and reduces production errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front view structural schematic diagram of a rubber shell anti-withdrawal pin jig provided by an embodiment of the present utility model;

[0026] Figure 2 It is a top view structural schematic diagram of a rubber shell anti-withdrawal pin jig provided by an embodiment of the present utility model;

[0027] Figure 3Schematic cross-sectional structure diagram of a rubber shell anti-withdrawal needle fixture provided by an embodiment of the present utility model;

[0028] Figure 4 A rubber shell anti-withdrawal needle fixture provided by an embodiment of the present utility model Figure 3 Schematic enlarged structure diagram of part A in

[0029] Reference numerals:

[0030] 1. Fixture head; 2. Placement groove; 3. Top frame; 4. Bottom frame; 5. Connection plate; 6. First flat head screw; 7. Second flat head screw; 8. Name sticker; 9. Wire screw insert; 10. Screw rod; 11. Spring; 12. Cylinder lock; 13. Protection cover; 14. First round head screw; 15. Headless machine screw; 16. Green LED light; 17. Red LED light; 18. Probe 1; 19. Probe 2; 20. Probe 3; 21. Bracket; 22. Micro switch; 23. Second round head screw. Specific implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0032] Embodiment 1

[0033] Please refer to Figures 1-4 , a fixture, comprising:

[0034] The fixture head 1 is provided with a probe 18 at the top. The fixture head 1 serves as the main body of the entire fixture. The probe 18 designed on its top is used to initially contact or detect the plug. A placement groove 2 for plug insertion is opened on the top side of the fixture head 1. The placement groove 2 opened on the top side of the fixture head 1 is specifically designed for the plug to ensure that the plug can be accurately inserted and positioned. Two probes 19 and two probes 20 are respectively arranged on the bottom side of the inner wall of the placement groove 2. The probes 19 and 20 are installed on the bottom side of the inner wall of the placement groove 2 and are used for electrical connection with the plug after insertion to perform necessary detection or signal transmission.

[0035] Automatic locking mechanism. The automatic locking mechanism is arranged inside the fixture head 1 and is used to lock and fix the plug in the placement groove 2. The automatic locking mechanism includes two cylinder locks 12, two protective covers 13, a plurality of first round head screws 14 and a plurality of cap head machine screws 15. Two installation cavities are formed inside the fixture head 1. The two cylinder locks 12 are respectively fixedly installed inside the two installation cavities and are used to automatically lock the plug. After receiving the control signal, the cylinder lock 12 will automatically extend the locking tongue and firmly lock the plug in the placement groove 2, preventing the plug from accidentally withdrawing during the testing or assembly process and achieving the purpose of fixing the plug. Automatic locking not only reduces labor and materials but also effectively prevents the plug from being inserted into the fixture insufficiently or falling off the fixture.

[0036] Both of the two protective covers 13 are fixedly installed on the top of the fixture head 1 through a plurality of first round head screws 14 and are used to cover and protect the cylinder locks 12. The protective cover 13 is fixed to the top of the fixture head 1 through the first round head screws 14. The main function is to protect the cylinder locks 12 from external interference and damage and ensure the long-term stable operation of the cylinder locks 12. Two threaded holes are respectively formed on both sides of the fixture head 1. Each cap head machine screw 15 is threadedly connected inside the threaded hole and is used to fix the cylinder lock 12. The cap head machine screw 15 further strengthens the installation of the cylinder lock 12. By being threadedly connected inside the threaded holes on both sides of the fixture head 1, it provides additional stability and safety.

[0037] Pull-back mechanism. The pull-back mechanism is arranged outside the fixture head 1 and is used to pull and restore the fixture head 1. The pull-back mechanism includes a top frame 3, a bottom frame 4, two connecting plates 5, a plurality of first flat head screws 6, a plurality of second flat head screws 7, two wire thread inserts 9, two screw rods 10 and two springs 11. The top frame 3 is arranged outside the fixture head 1, and the bottom frame 4 is arranged at the bottom of the fixture head 1. The top frame 3 and the bottom frame 4 are connected by two connecting plates 5. Both of the two connecting plates 5 are fixedly installed on the top frame 3 and the bottom frame 4 through a plurality of first flat head screws 6 and a plurality of second flat head screws 7. The top frame 3 and the bottom frame 4 are firmly connected by two connecting plates 5 and the first flat head screws 6 and the second flat head screws 7 to form the external support structure of the fixture. When the fixture head 1 is subjected to an external force such as manually pulling out the plug, the fixture head 1 will displace relative to the bottom frame 4, causing the plug to drive the fixture head 1 to be higher than the top frame 3.

[0038] Two mounting holes are provided on the bottom side of the jig head 1, and two wire thread inserts 9 are respectively fixedly installed on the inner walls of the two mounting holes. Two connecting grooves communicating with the mounting holes are provided inside the bottom frame 4. A screw rod 10 is slidably connected inside each connecting groove. One end outer wall of the screw rod 10 is threadedly connected to the inner wall of the wire thread insert 9. A spring 11 is sleeved on the outer wall of the screw rod 10. The operator pulls the plug wire and releases it after confirming that the plug terminals are installed properly. At this time, the spring 11 sleeved on the screw rod 10 starts to function, and uses its elastic force to pull the jig head 1 back to the original position, realizing the automatic reset function, restoring the jig to its original state, effectively improving the product quality reliability, reducing the defective rate, and enhancing the competitiveness. The screw rod 10 is connected to the mounting hole at the bottom of the jig head 1 through the wire thread insert 9, ensuring the effective transmission of the spring force and improving the applicability.

[0039] This application can be used in the field of anti-withdrawal needle jigs, and can also be used in other fields applicable to this application.

[0040] Among them, the model of the cylinder lock 12 is QG16-20, and the model of the microswitch 22 is KW12. Their structures and mechanisms will not be elaborated here.

[0041] Embodiment 2

[0042] Reference Figures 1-4 , based on Embodiment 1 with improvements: A plastic shell anti-withdrawal needle jig, which is applied to the field of anti-withdrawal needle jigs;

[0043] A name sticker 8 is provided on one side of one of the connecting plates 5 for identifying the jig name. The name sticker 8 facilitates the operator to quickly identify the jig name and usage, improving work efficiency.

[0044] Two green LED lights 16 are provided on the top of the top frame 3, and two red LED lights 17 are provided on the top of the jig head 1. When the terminal is inserted into the plug and the probe is conducting, the green LED light 16 will light up. The green LED light 16 indicates that the jig is in a normal working state or a ready state. The red LED light 17 on the top of the jig head 1 is used for warning, such as detecting incorrect operations, the plug not being inserted correctly, or the cylinder lock not being locked, etc., so that the operator can timely discover which terminal is not installed in place, reducing the occurrence of problems and production errors.

[0045] Two brackets 21 are fixedly provided on one side of the jig head 1. A microswitch 22 is fixedly installed on one side of each bracket 21 through two second round head screws 23. When the pulling reaches the production requirement height and strength, the microswitch 22 will form a circuit and send a signal. The microswitch 22 is installed on the brackets 21 on both sides of the jig head 1, used to detect specific positions or state changes of the jig head 1 to perform corresponding operations or stop the current operation, ensuring the safety and accuracy of the jig operation.

[0046] However, as is well known to those skilled in the art, the working principles and wiring methods of the cylinder lock 12, green LED light 16, red LED light 17, probe one 18, probe two 19, probe three 20, and microswitch 22 devices are common knowledge, and they all belong to conventional means or well-known common sense. Therefore, they will not be elaborated here. Those skilled in the art can make arbitrary selections according to their needs or convenience.

[0047] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model; without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A glue shell anti-needle-retracting fixture, characterized in that Including: A jig head (1), on the top of the jig head (1) there is a first probe (18), on the top side of the jig head (1) there is a placement groove (2) for plug insertion, and on the bottom side of the inner wall of the placement groove (2) there are respectively two second probes (19) and two third probes (20); An automatic locking mechanism, which is arranged inside the jig head (1) and is used to lock and fix the plug in the placement groove (2); A pulling-back mechanism, which is arranged outside the jig head (1) and is used to pull and restore the jig head (1).

2. The glue shell anti-needle-withdrawal fixture according to claim 1, characterized in that, The automatic locking mechanism includes two cylinder locks (12), two protective covers (13), a plurality of first round head screws (14) and a plurality of headless machine screws (15). There are two installation cavities inside the jig head (1), and the two cylinder locks (12) are respectively fixedly installed inside the two installation cavities and are used to automatically lock the plug.

3. The anti-withdrawal needle fixture for a plastic shell according to claim 2, characterized in that, The two protective covers (13) are both fixedly installed on the top of the jig head (1) through a plurality of first round head screws (14) and are used to cover and protect the cylinder locks (12). On both sides of the jig head (1), there are respectively two threaded holes, and each headless machine screw (15) is threadedly connected inside the threaded hole and is used to fix the cylinder lock (12).

4. A glue shell anti-needle-retracting fixture according to claim 1, characterized in that The pulling-back mechanism includes a top frame (3), a bottom frame (4), two connecting plates (5), a plurality of first flat head screws (6), a plurality of second flat head screws (7), two wire screw sleeves (9), two screw rods (10) and two springs (11). The top frame (3) is arranged outside the jig head (1), the bottom frame (4) is arranged at the bottom of the jig head (1), and the top frame (3) and the bottom frame (4) are connected by two connecting plates (5). The two connecting plates (5) are both fixedly installed on the top frame (3) and the bottom frame (4) through a plurality of first flat head screws (6) and a plurality of second flat head screws (7).

5. A glue shell anti-withdrawal needle fixture according to claim 4, wherein, On the bottom side of the jig head (1), there are two installation holes, and the two wire screw sleeves (9) are respectively fixedly installed on the inner walls of the two installation holes. Inside the bottom frame (4), there are two connection grooves communicating with the installation holes, and a screw rod (10) is slidably connected inside each connection groove. One end outer wall of the screw rod (10) is threadedly connected with the inner wall of the wire screw sleeve (9), and the spring (11) is sleeved on the outer wall of the screw rod (10).

6. The anti-needle-retraction jig for a plastic shell according to claim 5, wherein, On one side of one of the connecting plates (5) there is a name sticker (8) for identifying the jig name.

7. A glue shell anti-needle-retracting jig according to claim 4, characterized in that, On the top of the top frame (3) there are two green LED lights (16), and on the top of the jig head (1) there are two red LED lights (17).

8. A glue shell anti-needle-retracting jig according to claim 1, characterized in that, On one side of the jig head (1), there are two brackets (21) fixedly arranged, and on one side of each bracket (21), a micro switch (22) is fixedly installed through two second round head screws (23).

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