Positioning device and positioning apparatus

Abstract

The application discloses a positioning device and a positioning equipment. The positioning device comprises a positioning assembly and a constraint assembly. The positioning assembly has a default positioning state and a release state under external force constraint. In the positioning state, the positioning assembly can limit a workpiece at a predetermined position. In the release state, the positioning assembly releases the limitation on the workpiece. In an initial state, the constraint assembly constrains the positioning assembly in the release state, so that the workpiece in an uninstalled state is conveniently installed on the positioning device without manually adjusting the state of the positioning assembly. In a working state, the constraint assembly releases the constraint on the positioning assembly, so that the positioning assembly remains in the positioning state. The positioning device can adjust the state of the positioning assembly according to the installation state of the workpiece without manually adjusting the state of the positioning assembly. The positioning equipment can avoid the safety risk of workpiece falling off when the constraint assembly fails.

Description

Technical Field

[0001] This application relates to the field of mechanical parts assembly, and more specifically, to a positioning device and positioning equipment. Background Technology

[0002] A positioning device is a piece of equipment or tool used to precisely position and fix parts or components. It is widely used in the field of mechanical parts assembly to ensure the accuracy and stability of the assembly process. Positioning devices typically consist of some basic elements, including locating pins, locating holes, and locating blocks.

[0003] Positioning devices can be designed and used according to specific assembly requirements and part characteristics. They are widely used in manufacturing, especially in assembly processes requiring high precision and stability, such as automotive manufacturing, aerospace, and electronics. Proper use of positioning devices can improve assembly efficiency, reduce errors and damage risks, and ensure the quality and performance of the final product.

[0004] The following explanation uses the design of a positioning device for an evaporator storage tank as an example.

[0005] The vaporizer is one of the core components of anesthesia machines, providing the necessary anesthetic gas for the entire anesthesia system. The drug storage tank is the anesthetic storage device for the vaporizer. Existing vaporizer drug storage tank positioning devices typically use a combination of positioning pins and positioning holes to position the drug storage tank. This method has the following drawbacks: before installing the drug storage tank, the positioning pins need to be manually retracted into the positioning device, making the installation process laborious; and it lacks an independent safety pin component, posing a safety risk of the workpiece falling off when the restraint assembly fails. Summary of the Invention

[0006] In order to make the positioning component of the positioning device automatically retract in the initial state and automatically extend in the working state, thereby making the installation of the workpiece more convenient, this application provides a positioning device, the states of which include: an initial state in which no workpiece is installed; and a working state in which the workpiece is installed in place.

[0007] The positioning device includes a positioning component and a constraint component; wherein: the positioning component has: a default positioning state; and a release state under external force constraint; the default refers to the state in which a mechanism is not subject to external force; under the action of external force, the mechanism will leave the default state, and in the following text, the term default is used in this sense.

[0008] In the positioning state, the positioning component can define the position of the workpiece; and in the release state, the positioning component releases the limitation on the position of the workpiece; specifically: the positioning component in the positioning state can cooperate with the workpiece installed in place to define the position of the workpiece; and the positioning component in the release state releases the above cooperation so that the workpiece and the positioning device can move relative to each other, thereby removing the workpiece from the positioning device, or installing the workpiece in the uninstalled state onto the positioning device.

[0009] The state of the constraint component is associated with the state of the positioning device. Specifically: in the initial state, the constraint component constrains the positioning component to the released state so that a workpiece in an uninstalled state can be conveniently installed onto the positioning device without manually adjusting the state of the positioning component; and in the working state, the constraint component releases the constraint on the positioning component so that the positioning component remains in the positioning state.

[0010] To avoid the safety risk of workpiece falling off when the constraint component fails, this application also discloses a positioning device, which includes: the positioning device and a locking component, the locking component having a locked state and an unlocked state, wherein: in the locked state, the locking component can resist the constraint of external force on the positioning component to lock the positioning component in the positioning state; in the unlocked state, the locking component releases the locking.

[0011] In summary, the state of the constraint component of the positioning device disclosed in this application is associated with the state of the positioning device, so as to adjust the state of the positioning component according to the installation state of the workpiece without the need for manual adjustment of the state of the positioning component. The positioning device disclosed in this application includes the positioning device and a locking component. In the locked state, the locking component can resist the constraint of external forces on the positioning component to lock the positioning component in the positioning state, thereby avoiding the safety risk of workpiece falling off when the constraint component fails.

[0012] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application, and the illustrative embodiments and descriptions thereof are used to explain this application. In the drawings:

[0014] Figure 1 A schematic diagram of a positioning device according to a specific embodiment of this application;

[0015] Figure 2 for Figure 1A diagram showing the product after removing the top cover;

[0016] Figure 3 This is a schematic diagram of the second switch assembly according to a specific embodiment of this application;

[0017] Figure 4 for Figure 3 A sectional view;

[0018] Figure 5 This is a schematic diagram of the positioning component according to a specific embodiment of this application;

[0019] Figure 6 for Figure 5 A sectional view;

[0020] Figure 7 This is a schematic diagram of the constraint components in a specific embodiment of this application;

[0021] Figure 8 for Figure 7 A sectional view;

[0022] Figure 9 This is a schematic diagram of the locking component according to a specific embodiment of this application;

[0023] Figure 10 for Figure 9 A sectional view;

[0024] Figure 11 A schematic diagram illustrating the installation preparation of the workpiece for a specific embodiment of this application;

[0025] Figure 12 for Figure 11 The right view;

[0026] Figure 13 This is a schematic diagram illustrating the positioning action of the positioning pin in a specific embodiment of this application;

[0027] Figure 14 for Figure 13 A magnified view of a portion of the view;

[0028] Figures 15A-15D A schematic diagram of the self-locking process of the constraint component in a specific embodiment of this application;

[0029] Figure 16 This is a schematic diagram illustrating the installation feedback action in a specific embodiment of this application, in which the workpiece is not installed in place.

[0030] Figure 17 This is a schematic diagram illustrating the installation feedback action of a specific embodiment of this application, in which the workpiece has been installed in place.

[0031] Figure 18This is a schematic diagram showing that when the workpiece is not installed in place according to a specific embodiment of this application, the needle cylinder does not start and the safety pin is in the retracted state.

[0032] Figure 19 This is a schematic diagram illustrating how, after the workpiece is installed in place, the needle-type cylinder is vented and pushes the safety pin and safety pin insert to the left, according to a specific embodiment of this application.

[0033] Figure 20 This is a schematic diagram illustrating how pressing the button in a specific embodiment of this application causes the positioning pin to retract into the positioning device, but the constraint component remains locked.

[0034] Figure 21 for Figure 20 A magnified view of a portion of the view;

[0035] Figure 22 In order to be in Figure 20 Based on this, continue pressing button 102, button panel 103 drives hook lock toggle plate 310 to unlock constraint component 3 (illustration);

[0036] Figure 23 for Figure 22 A magnified view of a portion of the view;

[0037] Figure 24 This is a schematic diagram illustrating the completion of the locating pin reset action.

[0038] Figure label:

[0039] 1-Second switch assembly; 101-Button reset spring; 102-Button; 103-Button insert;

[0040] 2-Positioning component; 201-Positioning pin; 202-Positioning pin return spring; 203-Positioning pin mounting base; 204-Guide post;

[0041] 3-Constraint assembly; 301-Guide tube head bracket; 302-Rebound slider insert; 303-Trigger pin; 304-Guide screw; 305-Rebound slider; 306-Rebound baffle; 307-Guide tube; 308-Rebound slider return spring; 309-Hook lock pin; 310-Hook lock actuating plate; 311-Plug; 312-Hook lock; 313-Guide tube tail bracket; 314-Hook lock return spring; 315-Hook ring;

[0042] 4-Safety pin assembly; 401-Air supply pipe; 402-Needle cylinder; 403-Connecting nut; 404-Safety pin; 405-Safety pin insert;

[0043] 5- Proximity switch;

[0044] 6-Limit screw;

[0045] 7-Base plate;

[0046] 8-Top cover;

[0047] 9-Workpiece; 901-Pin hole. Detailed Implementation

[0048] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0049] In order to make the positioning component of the positioning device automatically retract into the positioning device in the initial state, thereby making the installation of the workpiece more convenient, this application provides a positioning device, the state of which includes: an initial state in which the workpiece 9 is not installed; and a working state in which the workpiece 9 is installed in place.

[0050] The positioning device includes a positioning component 2 and a constraint component 3; wherein: the positioning component 2 has: a default positioning state; and a release state under external force constraint; the default refers to the state in which a mechanism is not subject to external force; under the action of external force, the mechanism will leave the default state, and in the following text, the term default is used in this sense.

[0051] In the positioning state, the positioning component 2 can define the position of the workpiece 9; and in the release state, the positioning component 2 releases the limitation on the position of the workpiece 9; specifically: the positioning component 2 in the positioning state can cooperate with the workpiece 9 that is installed in place to define the position of the workpiece 9; and the positioning component 2 in the release state releases the above cooperation so that the workpiece 9 and the positioning device can move relative to each other, thereby removing the workpiece 9 from the positioning device, or installing the workpiece 9 in the uninstalled state onto the positioning device.

[0052] The state of the constraint component 3 is associated with the state of the positioning device. Specifically, in the initial state, the constraint component 3 constrains the positioning component 2 to the released state so that the workpiece 9 in the uninstalled state can be conveniently installed onto the positioning device without manually adjusting the state of the positioning component 2; and in the working state, the constraint component 3 releases the constraint on the positioning component 2 so that the positioning component 2 remains in the positioning state.

[0053] The positioning device can have an open or closed spatial structure for installing the positioning component 2 and the constraint component 3. Preferably, the positioning device includes an installation space. In a specific embodiment of this application, such as... Figure 1 As shown, the installation space is defined by the base plate 7 and the top cover 8.

[0054] The positioning component 2 can be configured in various suitable ways to switch between the positioning state and the release state. For example, it can be electromagnetic, with the switching between positioning and non-positioning achieved by controlling the magnitude of the electromagnetic force. Preferably, the positioning component 2 includes a positioning part disposed in the mounting space via a first biasing mechanism and having a predetermined travel range. The predetermined travel range includes: in a default state, the positioning part extends out of the mounting space to engage with a predetermined part of the workpiece; and, under external force constraint, the positioning part returns to the mounting space to release the engagement with the workpiece.

[0055] In one specific embodiment of this application, such as Figure 2 , Figure 5 or Figure 6 As shown, the positioning component 2 includes a positioning pin 201, a positioning pin return spring 202, and a positioning pin mounting base 203. The positioning pin mounting base 203 is fixed to the base plate 7. A positioning pin mounting hole is formed at the center of the positioning pin mounting base 203. The positioning pin 201 and the positioning pin return spring 202 are coaxially arranged within the positioning pin mounting hole. The positioning pin 201 can slide freely along the positioning pin mounting hole. The positioning pin return spring 202 is located below the positioning pin 201, with one end supported on the base plate 7 and the other end supporting the positioning pin 201. In the default state, the positioning pin 201 extends out of the positioning pin mounting base 203 and also extends out of the upper cover 8.

[0056] The positioning part can have various suitable structures to adjust its position by external force constraints. For example, a helical mechanical structure (such as a threaded rod and nut) can be used to control the up-and-down movement of the positioning part. In the case of a spring pin mechanism, the threaded rod can be connected to the pin body of the spring pin, while the nut is fixed to the support structure. By rotating the threaded rod, the nut will move up and down along the threaded rod, thereby controlling the up-and-down movement of the pin body of the spring pin. The up-and-down movement of the spring pin can also be controlled by a hydraulic or pneumatic system. By applying pressure in the control system, a hydraulic or pneumatic piston will push the pin body of the spring pin upward or downward. Electric motor drive: using an electric motor and transmission mechanism to control the up-and-down movement of the spring pin; or using an electric motor to convert rotational motion into linear motion through a transmission device (such as gears, belts, etc.), thereby driving the pin body of the spring pin to move up and down; for some simple applications or situations requiring manual adjustment, the up-and-down movement of the spring pin can also be controlled manually. For example, using a manual knob, handle, or hand crank, a force can be directly applied to the pin body of the spring pin, thereby causing it to move up and down. Preferably, in a specific embodiment of the invention, as... Figure 5As shown, the positioning part is provided with a guide post, which can move within the predetermined stroke range under external force constraints to adjust the position of the positioning part.

[0057] The constraint assembly includes a first constraint portion, which includes a first guide surface capable of engaging with the guide post. The first guide surface has a constraint region and a non-constraint region, wherein: the engagement of the constraint region with the guide post allows the external force constraint to be applied to the guide post; and the non-constraint region cannot apply the external force constraint to the guide post; and the first constraint portion is disposed in the installation space via a second biasing mechanism and has a predetermined travel range relative to the positioning portion. Within this predetermined travel range, the first constraint portion is linked to the workpiece installation process to change the area where the first guide surface engages with the guide post according to the workpiece installation process.

[0058] The first constraint part and the workpiece can be connected by a suitable structure to achieve linkage between them. For example, the first constraint part and the workpiece can be connected by gears to achieve motion transmission between them. Preferably, the first constraint part extends outward from the installation space to form a spring baffle, which can contact the workpiece to enable linkage between the first constraint part and the workpiece during the installation process.

[0059] If the first constraint part is pressed against the workpiece due to the restoring force generated by the second biasing mechanism, the workpiece will be pushed towards the positioning part in the positioning state, and a contact force will exist between the positioning part and the workpiece. This contact force will increase the resistance that the positioning part needs to overcome when switching its own state. In order to reduce this resistance, preferably, the constraint assembly includes a load-bearing part, wherein: in the working state, the load-bearing part can engage with the first constraint part to counteract the restoring force applied by the second biasing mechanism to the first constraint part, so that the first constraint part does not press against the workpiece due to the action of the restoring force, and thus there is no contact force between the workpiece and the positioning part, thereby reducing the resistance that the positioning part needs to overcome when switching its own state.

[0060] The load-bearing portion can have various suitable structures to engage with the first constraint portion. For example, the load-bearing portion can be connected to the first constraint portion via a clamp, which is typically an annular metal strip. The connection and disassembly between the load-bearing portion and the first constraint portion can be achieved by tightening or loosening. Preferably, in a specific embodiment of this application, the load-bearing portion has a rotatable hook-shaped member, which is held at a predetermined angle by a third biasing mechanism; and the spring-loaded baffle has an annular member that matches the hook-shaped member; wherein: during the installation of the workpiece, the annular member moves with the spring-loaded baffle and approaches the hook-shaped member; and when the workpiece is in place, the annular member contacts the hook-shaped member and drives the hook-shaped member to deflect away from the predetermined angle until the hook-shaped member slides into the annular member and forms an engagement. The positioning device includes a first switching assembly, which can drive the hook-shaped member to rotate away from the predetermined angle under external force, thereby releasing the engagement between the load-bearing portion and the first constraint portion.

[0061] The positioning device includes a second switch assembly, which is capable of constraining the positioning assembly to the released state under the action of an external force.

[0062] In a specific embodiment of this application, the second switch assembly 1 is movable along the long side of the base plate 7, wherein the limiting screw 6, the base plate 7, and the upper cover 8 jointly restrict the movement of the second switch assembly 1 in a direction perpendicular to the base plate. More specifically, the second switch assembly 1 includes a button reset spring 101, a button 102, and a button insert 103. The button insert 103 is fixed to the tail of the button 102, and the tail of the button 102 has a spring mounting hole at its center; the button reset spring 101 is coaxially mounted in the spring mounting hole, with one end of the button reset spring 101 supported at the bottom of the hole and the other end supported on the side of the positioning pin mounting seat 203 of the positioning assembly 2. In the default state, the button reset spring 101 pushes the button 102 to automatically extend out of the upper cover 8, and the button insert 103 moves with the button 102.

[0063] The second switch assembly includes a second constraint portion (in a specific embodiment of this application, the second constraint portion is a button insert 103), the second constraint portion includes a second guide surface capable of cooperating with the guide post, the second guide surface having a constraint area and a non-constraint area, wherein: the constraint area, when cooperating with the guide post, can apply the external force constraint to the guide post; and, the non-constraint area cannot apply the external force constraint to the guide post; and, the second constraint portion is disposed in the mounting space by a fourth biasing mechanism and has a predetermined travel range relative to the positioning portion (in a specific embodiment of this application, the fourth biasing mechanism includes a button reset spring 101); under the action of an external force, the second constraint portion can move within the predetermined travel range to change the area where the second guide surface mates with the guide post, wherein: in the default state, the second constraint portion mates with the guide post through the non-constraint area of ​​the second guide surface; and, under the action of an external force, the second constraint portion mates with the guide post through the constraint area of ​​the second guide surface.

[0064] To reduce the size of the positioning device, preferably, such as Figure 2 As shown, the second guide surface and the first guide surface are movably nested together and can respectively cooperate with the guide post.

[0065] To reduce the size of the positioning device, preferably, the first switch assembly and the second switch assembly are configured to operate in conjunction, so that the movement of the second constraint part drives the first switch assembly and releases the engagement between the load-bearing part and the first constraint part, wherein: the first switch assembly includes a toggle plate that is linked to the hook-shaped member, the toggle plate being used to drive the hook-shaped member away from the predetermined angle to release the engagement between the load-bearing part and the rebound baffle; and the second constraint part has an extension that can contact the toggle plate, and under the action of an external force, the extension can push the toggle plate to rotate.

[0066] In the specific embodiments of this application, such as Figure 2 , 7As shown in Figure 8, the constraint assembly 3 includes a guide tube head bracket 301, a spring-loaded slider insert 302, a trigger pin 303, a guide screw 304, a spring-loaded slider 305, a spring-loaded baffle 306, a guide tube 307, a spring-loaded slider return spring 308, a hook-lock pin 309, a hook-lock actuating plate 310, a plug 311, a hook lock 312, a guide tube tail bracket 313, and a hook-lock return spring 314. The guide tube head bracket 301 and the guide tube tail bracket 313 are located at both ends of the guide tube 307 and are integrally mounted on the base plate 7. The spring-loaded slider 305 is coaxially mounted on the guide tube 307 and can slide freely along its axial direction. One end of the spring-loaded baffle 306 is placed in the mounting groove at the top of the spring-loaded slider 305 and fixed with screws, while the other end extends out of the upper cover 8. A guide screw 304 is installed in the threaded hole of the spring-loaded slider 305. The root of the screw passes through the guide groove of the guide tube 307 and extends into the tube, restricting the axial rotation of the spring-loaded slider 305 along the guide tube 307 and fixing the spring-loaded slider insert 302 onto the spring-loaded slider 305. A plug 311 is fixedly connected to the outside of the guide tube tail bracket 313. A spring-loaded slider return spring 308 is coaxially disposed inside the guide tube 307, with one end supported at the root of the guide screw 304 and the other end supported inside the plug 311. In the free state, it pushes the spring-loaded slider 305 to return to the guide tube head bracket 301 side. A hook lock 312 and a hook lock actuating plate 310 are installed on the guide tube tail bracket 313 via a hook lock pin 309. Actuating the hook lock actuating plate 310 can rotate the hook lock 312, thereby unlocking the slider. The hook lock reset spring 314 is installed in the spring mounting hole of the guide tube tail bracket 313. One end is supported on the tail of the hook lock 312, and the other end is supported at the bottom of the spring mounting hole of the guide tube tail bracket 313. In the free state, it pushes the hook lock 312 to automatically reset. The trigger pin 303 is fixedly connected to the spring slide block insert 302. As the spring slide block 305 slides back and forth, when it slides to the working state, the end face of the trigger pin 303 is opposite to the detection surface of the proximity switch 5 and triggers the proximity switch to provide feedback on the positioning device status.

[0067] To avoid the safety risk of workpiece falling off when the constraint component fails, this application also discloses a positioning device, which includes: the positioning device and a locking component, the locking component having a locked state and an unlocked state, wherein: in the locked state, the locking component can resist the constraint of external force on the positioning component to lock the positioning component in the positioning state; in the unlocked state, the locking component releases the locking.

[0068] Preferably, the locking assembly includes a third constraint portion disposed in the mounting space via a fifth biasing mechanism; wherein: the third constraint portion has a default non-locking state; and a locking state under external force; in the locking state, the third constraint portion can abut against the guide post in the positioning state to counteract the external force constraint applied to the guide post by the first constraint portion and / or the second constraint portion.

[0069] To reduce the size of the positioning device, preferably: the fifth offset mechanism is coaxially and movably nested with the second offset mechanism; the third constraint part is movably nested with the second constraint part and / or the first constraint part and can respectively cooperate with the guide post.

[0070] Preferably, the positioning device includes a monitoring module for feedback on whether the workpiece is installed in place; in other words, the monitoring module is used to feedback on whether the positioning device is in a working state. The locking component is electrically connected to the monitoring module to switch its own state according to the different states of the positioning device, wherein: when the positioning device is in a working state, the locking component is in a locked state; otherwise, the locking component is in an unlocked state.

[0071] Preferably, the monitoring module includes a trigger unit installed on the constraint component and a sensing unit (i.e., the trigger pin 303 and proximity switch 5 mentioned above) disposed in the installation space, wherein: the trigger unit can move with the constraint component to reflect the position of the workpiece; and the sensing unit is fixedly disposed at a predetermined position in the installation space, the predetermined position corresponding to the position of the workpiece after installation.

[0072] Preferably, the third constraint part includes a safety pin, and the fifth biasing mechanism includes a needle cylinder; one end of the safety pin extends to provide a safety pin insert, which can abut against the guide post in the locked state and in the positioned state to resist the external force constraint applied to the guide post by the first constraint part and / or the second constraint part; the other end of the safety pin is connected to the needle cylinder 402 through a connecting nut 403 so that the safety pin can move under the drive of the needle cylinder.

[0073] In the specific embodiments of this application, such as Figure 9 and Figure 10As shown, the locking assembly 4 includes an air supply pipe 401, a needle-type cylinder 402, a connecting nut 403, a safety pin 404, and a safety pin insert 405. The safety pin insert 405 is fixedly connected to one side of the safety pin 404. The other side of the safety pin 404 is connected to the needle-type cylinder 402 via the connecting nut 403. This connection is movable, ensuring that in the free state, the safety pin freely contacts the bottom surface of the safety pin sliding groove on the base plate 7 and can slide freely along the sliding groove. The needle-type cylinder 402 is fixedly connected inside one side of the guide pipe 307 in the restraint assembly 3. One end of the air supply pipe 401 is connected to the air inlet of the needle-type cylinder 402, and the other end extends from the center hole of the plug 311 in the restraint assembly 3 to the outside of the positioning device.

[0074] The following combination Figure 1 , Figures 11-24 The specific working process of the positioning device disclosed in this application is described below. In this specific embodiment, the positioning device is used for positioning the evaporator storage tank.

[0075] like Figure 1 As shown, the positioning device for the evaporator storage tank includes: a second switch assembly 1, a positioning assembly 2, a constraint assembly 3, a locking assembly 4, a proximity switch 5, a limit screw 6, a base plate 7, and a top cover 8. Specifically: the positioning assembly 2 and the constraint assembly 3 are fixedly connected to the base plate 7 with screws; the locking assembly 4 passes through the center of the constraint assembly 3 and is threadedly connected to the constraint assembly 3; the proximity switch 5 is fixed to one side of the inner wall of the long side of the top cover; and the limit screw 6 is fixed to both sides of the top cover 8 along its length.

[0076] The positioning device is installed on the lower side of a support plate, which has a square groove. A spring-loaded baffle extends from the groove, and a guide rail is installed above the support plate. Workpiece 9 is pushed in from one side of the guide rail. Pressing the button unlocks the device, and workpiece 9 automatically pops out. The specific actions and implementation method are as follows:

[0077] The first step is the installation preparation for workpiece 9: such as Figure 11 and Figure 12 As shown, the guide rail sliding groove of workpiece 9 is aligned with the guide rail 10 and inserted, and then pushed inward, so that workpiece 9 slides along the guide rail 10 to one side of the spring-loaded baffle 306. At this time, the spring-loaded slider insert 302 constrains the guide post 204, so that the positioning pin 201 retracts into the upper cover 8 of the positioning device.

[0078] Secondly, the installation process of workpiece 9 mainly involves the following four actions: positioning pin positioning; constraint component self-locking; installation in place feedback; and safety pin locking the positioning pin. Details are as follows:

[0079] First, the positioning pin's positioning action is achieved: (e.g., ...) Figure 13As shown, the workpiece 9 is pushed inward along the guide rail. The spring baffle drives the spring slide block to move to the tail end. The positioning pin guide post disengages from the spring slide block insert slide rail and contacts the button insert slide rail, causing the pin head to extend into the pin hole 901 of the workpiece 9, thus completing the positioning action of the workpiece 9.

[0080] Second, the self-locking action of the constraint component is implemented as follows: Figure 14 As shown, the hook lock rotates and resets around the hook lock pin under the action of the return spring. The pin head automatically extends into the hook ring structure at the tail of the spring slide block, completing the self-locking of the constraint component and ensuring that there is no contact force between the spring baffle, workpiece 9, and positioning pin. Figures 15A-15D As shown, the self-locking process of the constraint component specifically includes:

[0081] a) Workpiece 9 pushes the springback baffle, causing the springback slider hook ring to move to the hook lock head;

[0082] b) Continue pushing workpiece 9, and the springback slider hook ring will push the hook lock to rotate counterclockwise;

[0083] c) Continue pushing workpiece 9, the springback slider hook ring moves to contact the tail bracket, the hook lock rotates clockwise under the action of the return spring, and the hook lock pin head is locked into the hook ring;

[0084] d) Release workpiece 9. The spring slide block slides back under the action of the spring slide block return spring until the hook ring contacts the pin head. The pin head restricts the continued sliding of the spring slide block and completes the self-locking action.

[0085] Third, the installation feedback action is implemented as follows: When the trigger pin approaches the detection surface of the proximity sensor, the proximity sensor turns on and sends an electrical signal, providing feedback on the installation status of workpiece 9. The trigger pin is fixedly connected to the spring slide block via a spring slide block insert, and slides back and forth with the spring slide block.

[0086] like Figure 16 As shown, when workpiece 9 is not installed in place, the spring slider is located on one side of the guide tube head bracket. The trigger pin is too far from the proximity sensor detection surface to trigger the proximity sensor, resulting in no electrical signal being emitted and indicating that workpiece 9 is not installed. Figure 17 As shown, after workpiece 9 is installed in place, the spring slider moves to the side of the guide tube tail bracket, the trigger pin end face is opposite to the proximity sensor detection surface, triggering the proximity sensor to send an electrical signal, which in turn indicates that workpiece 9 is in the installation state.

[0087] Fourth, the safety pin locking and positioning pin action is achieved: such as Figure 18 As shown, when workpiece 9 is not installed in place, the needle cylinder does not start, the safety pin is in the retracted state, the positioning pin guide post is unrestricted, and the positioning pin can move up and down.

[0088] like Figure 19As shown, after the workpiece 9 is detected to be installed in place, if the workpiece 9 is in the power-on state, the needle cylinder is activated by air supply, which pushes the safety pin and safety pin insert to move to the left. The tail end of the insert moves to the bottom of the positioning pin guide post, locking the positioning pin so that the positioning pin cannot move up or down, thus completing the locking of the positioning pin.

[0089] Finally, the disassembly process of workpiece 9 is described, which mainly includes the following three actions: unlocking workpiece 9, ejecting workpiece 9, and resetting the locating pin. These are described in detail below:

[0090] First, the unlocking action of workpiece 9 is completed: Pressing button 102 causes the positioning pin 201 to retract into the positioning device, unlocking workpiece 9. At this point, workpiece 9 can slide along the guide rail. Figure 20 and Figure 21 As shown, constraint component 3 is still locked at this time, and workpiece 9 cannot pop out.

[0091] Secondly, the completion of the ejection action of workpiece 9: such as Figure 22 and Figure 23 As shown, continue pressing button 102, button panel 103 drives hook lock toggle plate 310, unlocks constraint component 3, and under the push of spring return spring 308, spring baffle 306 pushes workpiece 9 outward along guide rail.

[0092] Finally, the resetting action of the locating pin is completed: as follows Figure 24 As shown, during the process of workpiece 9 sliding out, the spring-loaded slider insert pushes the positioning pin guide post to move along its slide rail, causing the positioning pin head to retract into the positioning device, completing the positioning pin reset action. At the same time, the button also returns to its original position under the action of its reset spring.

[0093] In summary, the positioning device disclosed in this application mainly includes a second switch assembly, a positioning assembly, a constraint assembly, a locking assembly, a proximity switch, a limit screw, a base plate, and a top cover. The positioning assembly and the constraint assembly have two states: an initial state and a working state.

[0094] When workpiece 9 is not installed, both the positioning component and the constraint component are in the initial state. At this time, the positioning pin is retracted into the positioning device, and the spring baffle is located on the side close to the head of the positioning device.

[0095] When workpiece 9 is installed, the head of the self-positioning device is pushed in, and the tail of workpiece 9 pushes the spring baffle to the installation position. The positioning pin automatically resets and inserts into the groove at the bottom plate of workpiece 9. At this time, workpiece 9 is positioned and cannot be pulled out. At the same time, the constraint component is self-locked by its tail hook, and the spring baffle cannot spring back, ensuring that there is no contact force between the groove at the bottom plate of workpiece 9 and the positioning pin. The proximity switch is also triggered at the same time, indicating that workpiece 9 is in the installation state.

[0096] When the button is pushed, the positioning component first enters the working state, the positioning pin retracts into the positioning device, and workpiece 9 is released. Then, the tail hook of the constraint component is triggered to release the spring-loaded baffle, and the constraint component pushes workpiece 9 out automatically. Simultaneously, the proximity switch turns off, indicating that workpiece 9 is not installed. When the electrically controlled workpiece 9 is running, its status is automatically detected. If it is in the installed state, the locking component is automatically activated. At this time, the positioning component is locked and cannot move, preventing accidental activation of the button component and ensuring workpiece 9's ejection during use, thus guaranteeing safety.

[0097] The technical advantages of this application include: In the initial state, the positioning pin of the positioning component automatically retracts into the positioning device, making it easier to push the workpiece 9 in without producing abnormal noise; The constraint component of the positioning device has an automatic locking hook, which hooks onto the return baffle when the positioning device is in operation, so that there is no contact force between the workpiece 9 and the positioning device. At this time, pressing the button only requires overcoming the restoring force of the button reset spring and the positioning pin reset spring. These two springs can be miniature springs to reduce the driving force and make pressing easier; The constraint component and locking component of this application have a high degree of integration and reduced size; The number of parts in this application is relatively reduced, the structure is simple, and the installation is convenient.

[0098] In the description of this application, it should be noted that: the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the technical feature is used. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the technical feature must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted; the terms "approximately" and "basically" indicate that a certain feature or range is similar to or close to the predetermined requirements to some extent, but does not need to be completely identical. It implies a certain degree of flexibility and room for change, allowing for some modifications without affecting its core concept or function; in addition, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood in conjunction with the specific circumstances.

[0099] The preferred embodiments of this application have been described in detail above. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0100] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0101] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

Claims

1. A positioning device, the positioning device comprising the following states: The initial state of the workpiece before it is installed; And, the working state where the workpiece has been installed in place; Its characteristic is that the positioning device includes a positioning component and a constraint component; wherein: The positioning component has: a default positioning state; and a release state under external force constraint; wherein: in the positioning state, the positioning component can limit the position of the workpiece; and in the release state, the positioning component releases the limitation on the position of the workpiece. In the initial state, the constraint component constrains the positioning component to the released state; and in the working state, the constraint component releases the constraint on the positioning component so that the positioning component remains in the positioning state. Wherein: the positioning device includes an installation space, the positioning component includes a positioning part, the positioning part is disposed in the installation space by a first biasing mechanism and has a predetermined travel range, the predetermined travel range includes: in a default positioning state, the positioning part extends out of the installation space to form a fit with a predetermined part of the workpiece; and, under external force constraint, the positioning part returns to the installation space to release the fit with the workpiece; The positioning part is provided with a guide post, which can move within the predetermined stroke range under external force constraints to adjust the position of the positioning part; The constraint assembly includes a first constraint portion, which includes a first guide surface capable of engaging with the guide post. The first guide surface has a constraint region and a non-constraint region, wherein: the engagement of the constraint region with the guide post allows for the application of an external force constraint to the guide post; and the non-constraint region cannot apply an external force constraint to the guide post; and The first constraint part is disposed in the installation space by a second biasing mechanism and has a predetermined travel range relative to the positioning part. The first constraint part is linked with the installation process of the workpiece within the predetermined travel range to change the area where the first guide surface mates with the guide post according to the installation process of the workpiece.

2. The positioning device according to claim 1, characterized in that: The first constraint portion extends outward from the installation space to form a spring-loaded baffle, which can contact the workpiece to enable the first constraint portion to be linked with the workpiece during the installation process.

3. The positioning device according to claim 1 or 2, characterized in that: The constraint assembly includes a load-bearing portion, wherein, in the working state, the load-bearing portion is capable of engaging with the first constraint portion to counteract the restoring force exerted by the second biasing mechanism on the first constraint portion.

4. The positioning device according to claim 3, characterized in that: The positioning device includes a first switch assembly, which is capable of releasing the engagement between the load-bearing part and the first constraint part under the action of external force.

5. The positioning device according to claim 4, characterized in that: The positioning device includes a second switch assembly, which is capable of constraining the positioning assembly to the released state under the action of an external force.

6. The positioning device according to claim 5, characterized in that: The second switching assembly includes a second constraint portion, which includes a second guide surface capable of engaging with the guide post. The second guide surface has a constraint region and a non-constraint region, wherein: the constraint region of the second guide surface engaging with the guide post allows for the application of an external force constraint to the guide post; and the non-constraint region of the second guide surface cannot apply an external force constraint to the guide post; and, The second constraint part is disposed in the installation space by a fourth biasing mechanism and has a predetermined travel range relative to the positioning part; under the action of external force, the second constraint part can move within the predetermined travel range of the second constraint part to change the area where the second guide surface mates with the guide post, wherein: in the default positioning state, the second constraint part mates with the guide post through the unconstrained area of ​​the second guide surface; and, under the action of external force, the second constraint part mates with the guide post through the constrained area of ​​the second guide surface.

7. The positioning device according to claim 6, characterized in that, The first switch assembly and the second switch assembly are configured to operate in conjunction, so that the first switch assembly is driven by the movement of the second constraint part and the engagement between the load-bearing part and the first constraint part is released.

8. A positioning device, characterized in that, The positioning device includes: The positioning device according to any one of claims 1-7; and, A locking component having a locked state and an unlocked state, wherein: in the locked state, the locking component is able to resist the constraint of external forces on the positioning component to lock the positioning component in the positioning state; in the unlocked state, the locking component is released from locking.

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