A mistake prevention device for preventing gasket misloading

Abstract

The utility model relates to a kind of mistake-proofing device for preventing gasket missing, involve brake hose assembly production field, comprising: vertical output device, output end is located below;Magnetic suction pressure head, installation is in the output end of vertical output device;Clamping chuck, located below vertical output device, with the gripper structure for clamping workpiece bottom gasket;Support structure, it is arranged in the inside of clamping chuck, for supporting lower gasket, with the through-hole of accommodating bolt in middle;Driving device, for driving the gripper structure of clamping chuck open and close.The utility model provides a kind of mistake-proofing device for preventing gasket missing, discard traditional ordinary bolt compression head, innovatively upgrade it to magnetic suction pressure head, with the organic combination of clamping chuck and magnetic suction effect, improve the identification rate of lower gasket missing.

Description

Technical Field

[0001] This utility model belongs to the field of brake hose assembly manufacturing technology, and in particular relates to an error prevention device to prevent gaskets from being missing. Background Technology

[0002] Currently, brake hose assemblies often have process requirements for mounting bolts and washers. The washers are usually made of sheet material, so they are usually thin. During manual assembly, it is inevitable that there will be quality problems such as over-installation or omission of washers. Detecting 100% whether there are over-installation or omission of washers is a technical challenge.

[0003] The main technical methods currently used are: one is to use displacement sensors for detection, which can effectively identify 100% of the over- or under-installation of upper shims and lower shims, but cannot identify whether a lower shim is missing; the other is to use a vision system for detection, which is usually greatly affected by external factors such as external light and workpiece surface quality, with an overall misjudgment rate of about 3‰. If a correct assembly is misjudged, it will cause frequent alarms and interrupt production. If a missing lower shim is misjudged, defective products will escape to the customer, causing huge economic losses. Utility Model Content

[0004] In view of the shortcomings of the related technologies, this utility model provides a mis-proof device to prevent the omission of gaskets. The mis-proof device adopts the structure of a magnetic pressure head to solve the technical problem of the inability to identify omissions of gaskets under assembly bolts.

[0005] This utility model provides a mis-proof device to prevent the omission of gaskets, comprising:

[0006] A vertical output device with the output end located at the bottom.

[0007] The magnetic pressure head is installed at the output end of the vertical output device.

[0008] The clamping chuck, located below the vertical output device, has a jaw structure for clamping the bottom pad of the workpiece.

[0009] The support structure, located inside the clamping chuck, is used to support the lower pad and has a through hole in the middle to accommodate bolts.

[0010] A drive unit is used to drive the opening and closing of the gripper structure of the chuck.

[0011] In some embodiments, the magnetic pressure head includes:

[0012] The mounting block is detachably connected to the output end of the vertical output device at the top, and has a groove at the bottom.

[0013] The magnet is located inside the groove.

[0014] The protective cap is detachably attached to the groove opening.

[0015] In some embodiments, the top surface of the mounting block is provided with an internal threaded hole for connecting the output end of the vertical output device, and the top of the mounting block is prismatic.

[0016] In some embodiments, the cross-sectional area of ​​the top of the mounting block is smaller than the cross-sectional area of ​​the bottom of the mounting block.

[0017] In some embodiments, the mounting block is a non-magnetic mounting block; the protective cap is a non-magnetic protective cap.

[0018] In some embodiments, the protective cap is fitted onto the bottom of the mounting block and threadedly connected to the mounting block, and the outer edge of the protective cap's cross-section is polygonal.

[0019] In some embodiments, the longitudinal height of the magnet is less than the longitudinal height of the groove.

[0020] In some embodiments, the error prevention device further includes a bracket detachably connected to the vertical output device and the clamping chuck.

[0021] In some embodiments, the magnet is a neodymium iron boron magnet.

[0022] In some embodiments, the vertical output device is any one of a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. This utility model provides a device to prevent the omission of gaskets. It abandons the traditional ordinary bolt clamping head and innovatively upgrades it to a magnetic clamping head. By organically combining the clamping chuck and the magnetic attraction, the recognition rate of missing lower gaskets is improved.

[0025] 2. The magnetic pressure head in this utility model is designed with a magnet encased inside, and the magnet is protected by a protective cap. At the same time, the magnet is made of neodymium iron boron magnet, which allows the pressure head to be used for a long time without affecting the efficiency of the equipment due to magnet damage or loss of magnetic force. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2This is a schematic diagram of the magnetic suction head in this utility model;

[0029] Figure 3 This is a schematic diagram illustrating the structure of the clamping chuck in this utility model;

[0030] Figure 4 This is a schematic diagram of the assembly of the workpiece, upper gasket, lower gasket, and bolts.

[0031] In the picture:

[0032] 1. Vertical output device; 2. Bracket; 3. Magnetic pressure head; 31. Mounting block; 311. Internal threaded hole; 32. Magnet; 33. Protective cap; 4. Clamping chuck; 41. Force-applying component; 42. Claw; 5. Workpiece; 6. Bolt; 7. Upper washer; 8. Lower washer; 9. Support structure. Detailed Implementation

[0033] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] As attached Figure 1-4 As shown, in an embodiment of the error-proofing device for preventing the omission of gaskets according to this utility model, the error-proofing device for preventing the omission of gaskets includes at least:

[0038] Vertical output device 1, with the output end located at the bottom.

[0039] The magnetic pressure head 3 is installed at the output end of the vertical output device 1.

[0040] The clamping chuck 4, located below the vertical output device 1, has a jaw structure for clamping the bottom pad of the workpiece 5.

[0041] The support structure 9 is located inside the clamping chuck 4 and is used to support the lower gasket 8. It has a through hole in the middle to accommodate the bolt 6.

[0042] A drive unit is used to drive the opening and closing of the gripper structure of the chuck 4.

[0043] The support structure 9 is only used to elevate the lower shim 8 so that there is space below the lower shim 8 to accommodate the bolt 6. The support structure 9 does not interfere with the action of the gripper structure to clamp the lower shim 8 inward.

[0044] Before using the error-proof device, the jaw structure of the clamping chuck 4 is opened outward to expose the support structure 9 inside the clamping chuck 4. Then, the lower shim 8, the workpiece 5, and the upper shim 7 should be placed on the support structure 9 in sequence, so that the bolt 6 passes through the upper shim 7, the workpiece 5, and the lower shim 8 from top to bottom and is inserted into the through hole.

[0045] When the error-proofing device is in use, the vertical output device 1 drives the magnetic suction head 3 to move downwards and press against the head of the bolt 6. The drive device drives the jaw structure of the clamping chuck 4 to tighten inwards to compress the lower shim 8. The lower shim 8 deforms under radial force, and its inner diameter gradually decreases until it is stuck on the bolt 6. Then the jaw structure is released, and the vertical output device 1 drives the magnetic suction head 3 to move upwards. If the lower shim 8 is not placed in the clamping chuck 4 before the error-proofing device is used, the magnetic suction head can only move the bolt 6 upwards, and the workpiece 5 will remain in the clamping chuck 4. If the lower shim 8 is placed in the clamping chuck 4 before the error-proofing device is used, the magnetic suction head will move the bolt 6, workpiece 5, upper shim 7, and lower shim 8 upwards together.

[0046] Users can easily and intuitively determine whether the lower pad 8 is missing by observing whether the magnetic suction head 3 can move the workpiece 5 upward after the gripper structure tightens and loosens.

[0047] Furthermore, the clamping chuck 4 is manufactured based on commonly available chucks. Each jaw 42 of a commonly available chuck has a detachable top surface connected to a force-applying component 41 for clamping the lower shim 8. All force-applying components 41 are inserted between the support structure 9 and the workpiece 5 and cooperate with the lower shim 8. The clamping jaw structure of the clamping chuck 4 consists of jaws 42 and force-applying components 41. When all force-applying components 41 move towards the chuck axis under the action of the jaws 42, they compress and deform the lower shim 8, clamping it onto the bolt 6. The chuck shown in the figure is a three-jaw chuck.

[0048] Furthermore, the mounting position of the force-applying component 41 on the jaw 42 is radially adjustable along the clamping chuck 4.

[0049] The chucks commonly found on the market are mechanical devices used on machine tools to clamp workpieces. Their structure and working principle will not be elaborated here.

[0050] The drive unit is a common matching drive unit for commercially available chucks, and is not shown in the diagram.

[0051] In some embodiments, the magnetic pressure head 3 includes:

[0052] Mounting block 31 is detachably connected to the output end of vertical output device 1 at the top and has a groove at the bottom. The connection between mounting block 31 and vertical output device 1 includes, but is not limited to, threaded connection and snap-fit ​​connection.

[0053] Magnet 32 ​​is set in the groove.

[0054] The protective cap 33 is detachably connected to the groove opening.

[0055] The magnetic pressure head 3 is composed of multiple detachable interconnected structures, which helps to reduce the manufacturing difficulty of the magnetic pressure head 3, improve the production efficiency and yield of the magnetic pressure head 3, and reduce the production cost of the magnetic pressure head 3. In addition, the quick-release cap 33 can also form a full-enclosed protection for the magnet 32 ​​to prevent the magnet 32 ​​from breaking.

[0056] In some embodiments, the mounting block 31 is threadedly connected to the output end of the vertical output device 1. The top surface of the mounting block 31 is provided with an internal threaded hole 311 for connecting the output end of the vertical output device 1. The top of the mounting block 31 is prismatic so that a wrench can be connected to the mounting block 31, making it convenient and effortless to assemble and detach the mounting block 31 from the vertical output device 1.

[0057] Furthermore, the top of mounting block 31 is hexagonal prism-shaped.

[0058] In some embodiments, the cross-sectional area of ​​the top of the mounting block 31 is smaller than the cross-sectional area of ​​the bottom of the mounting block 31. The bottom of the mounting block 31 can provide some support and limit the wrench, preventing the wrench from sliding off the top of the mounting block 31 during the application of force to the mounting block 31.

[0059] In some embodiments, the mounting block 31 is a non-magnetic mounting block to allow the magnet 32 ​​to be quickly detached from the mounting block 31. The protective cap 33 is a non-magnetic protective cap to allow the magnet 32 ​​to be quickly detached from the protective cap 33. The non-magnetic mounting block and the non-magnetic protective cap facilitate the rapid replacement of the magnet 32.

[0060] In some embodiments, the protective cap 33 is fitted onto the bottom of the mounting block 31 and threadedly connected to the mounting block 31. The outer edge of the protective cap 33 cross-section is polygonal so that the protective cap 33 can be engaged with a wrench.

[0061] Furthermore, the outer edge of the protective cap 33 cross-section is hexagonal.

[0062] Furthermore, the protective cap 33 is a stainless steel or copper protective cap; the mounting block 31 is a stainless steel or copper mounting block. The thickness of the bottom of the protective cap 33 is preferably 0.5mm-15mm.

[0063] The mounting block 31 of the magnetic pressure head 3 has an external thread on its bottom outer surface, and the inner surface of the protective cap 33 has a corresponding internal thread. After the magnet 32 ​​is installed in the groove at the bottom of the mounting block 31, the protective cap 33 is fitted onto the mounting block 31 and connected by the thread. This threaded connection allows for quick installation and removal of the protective cap 33, facilitating the inspection and maintenance of the magnetic pressure head 3.

[0064] In some embodiments, the longitudinal height of magnet 32 ​​is less than the longitudinal height of groove.

[0065] Magnet 32 ​​is a fragile part. In order to ensure that the magnet can be used for a long time, in this invention, magnet 32 ​​is completely enclosed in mounting block 31. The longitudinal height of magnet 32 ​​must be less than the longitudinal height of the bottom groove of mounting block 31 to ensure that protective cap 33 can be properly installed with the bottom of mounting block 31 and magnet 32 ​​is completely enclosed in it.

[0066] In some embodiments, the error-proofing device further includes a bracket 2, detachably connected to the vertical output device 1 and the clamping chuck 4. The bracket 2 is fixedly connected to the worktable so that the magnetic suction head 3 fixedly connected to the lower end of the vertical output device 1 corresponds to the central axis of the clamping chuck 4.

[0067] The magnetic suction head 3 is vertically aligned with the center of the clamping chuck 4. In the working state, the magnetic suction head 3 is vertically aligned with the clamping chuck 4. When the vertical output device 1 falls to apply force to the workpiece 5, it can accurately transmit the force along the vertical direction to the center position of the clamping chuck 4. The bolt 6 will not have problems such as displacement or tilting due to uneven force when it is pressed in.

[0068] Furthermore, a proximity sensor can be installed on the bracket 2 to detect whether the workpiece 5 is on the bolt 6 when the magnetic pressure head 3 moves upward. The proximity sensor is an existing structure and will not be described in detail here; the proximity sensor is not shown in the figure.

[0069] In some embodiments, magnet 32 ​​is a neodymium iron boron magnet. Neodymium iron boron magnets have stable magnetism, which can prevent the magnetism from weakening after repeated use. If the magnetism of the magnetic pressure head 3 gradually weakens after repeated use, it will affect the stability and reliability of the equipment. The attraction force of the magnetic pressure head 3 depends on the magnetic force of magnet 32 ​​inside the protective cap 33, and the size of magnet 32 ​​itself and the thickness of the bottom of the protective cap 33 can be used to adjust the magnetic attraction force. It is preferable that the diameter of magnet 32 ​​is less than 50mm.

[0070] In some embodiments, the vertical output device 1 is any one of a cylinder, a hydraulic cylinder, or an electric actuator.

[0071] Through the description of several embodiments of the error-proofing device for preventing the omission of gaskets according to the present invention, it can be seen that the embodiments of the error-proofing device for preventing the omission of gaskets according to the present invention have at least one or more of the following advantages:

[0072] 1. This utility model provides a device to prevent the omission of gaskets. It abandons the traditional ordinary bolt clamping head and innovatively upgrades it to a magnetic clamping head 3. By means of the organic combination of clamping chuck 4 and magnetic attraction, the recognition rate of missing lower gasket 8 is improved.

[0073] 2. The magnetic pressure head 3 in this utility model is set as an inner wrapping of the magnet 32, and the magnet 32 ​​is protected by the protective cap 33. At the same time, the magnet 32 ​​is made of neodymium iron boron magnet, so that the pressure head can be used for a long time and the efficiency of the equipment will not be affected by the damage to the magnet 32 ​​or the loss of magnetic force.

[0074] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A mis-installation device to prevent the omission of gaskets, characterized in that, include: Vertical output device, with the output end located at the bottom; A magnetic pressure head is installed at the output end of the vertical output device; The clamping chuck, located below the vertical output device, has a jaw structure for clamping the bottom pad of the workpiece; The support structure, located inside the clamping chuck, is used to support the lower pad and has a through hole in the middle to accommodate bolts. A drive unit is used to drive the opening and closing of the gripper structure of the chuck.

2. The error-proofing device for preventing the omission of gaskets according to claim 1, characterized in that, The magnetic pressure head includes: The mounting block is detachably connected to the output end of the vertical output device at the top and has a groove at the bottom. The magnet is located inside the groove; The protective cap is detachably attached to the groove opening.

3. The error-proofing device for preventing the omission of gaskets according to claim 2, characterized in that, The top surface of the mounting block is provided with an internal threaded hole for connecting the output end of the vertical output device, and the top of the mounting block is prismatic.

4. The error-proofing device for preventing the omission of gaskets according to claim 3, characterized in that, The cross-sectional area of ​​the top of the mounting block is smaller than the cross-sectional area of ​​the bottom of the mounting block.

5. The error-proofing device for preventing the omission of gaskets according to claim 2, characterized in that, include: The mounting block is a non-magnetic mounting block; The protective cap is a non-magnetic protective cap.

6. The error-proofing device for preventing the omission of gaskets according to claim 5, characterized in that, The protective cap is fitted onto the bottom of the mounting block and threadedly connected to the mounting block. The outer edge of the protective cap's cross-section is polygonal.

7. The error-proofing device for preventing the omission of gaskets according to claim 2, characterized in that, The vertical height of the magnet is less than the vertical height of the groove.

8. A mis-installation prevention device for preventing gaskets from being missing, as described in any one of claims 1-7, characterized in that, Also includes: The bracket is detachably connected to the vertical output device and the clamping chuck.

9. A mis-installation prevention device for preventing gaskets from being missing, as described in any one of claims 1-7, characterized in that, The magnet is a neodymium iron boron magnet.

10. A mis-installation prevention device for preventing gaskets from being missing, as described in any one of claims 1-7, characterized in that, include: The vertical output device can be any one of a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.

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