A fool-proof selector

Abstract

The utility model discloses a kind of foolproof mistake preventors, including shell, chuck / sleeve mounting seat, clamping block and cylinder are equipped in shell;Chuck / sleeve mounting seat is equipped with several chuck / sleeve mounting holes and recesses one by one in correspondence, and a clamping block is slidably installed in each recess;Clamping block is connected with the piston rod of cylinder, and a 8-shaped through-hole is provided on clamping block, chuck / sleeve passes through shell, clamping block in turn, and can be slidably inserted in the chuck / sleeve mounting hole of base, when the tail of chuck / sleeve is located in the small hole of 8-shaped through-hole, chuck / sleeve is in locked state;When located in the large hole of 8-shaped through-hole, chuck / sleeve is in open state.The selector of the application can only take out chuck / sleeve in working state, and even cannot be taken out using larger external force in non-working state, ensure foolproof mistake prevention in production process, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and specifically to a foolproof and error-proof selector. Background Technology

[0002] The bit / sleeve selector is a specially designed accessory for electric tightening equipment when multiple screws of different sizes need to be tightened at the same workstation on an assembly line. The bit / sleeve selector can hold different sized bits / sleeves for the electric tightening equipment to select as needed.

[0003] For example, Chinese patent CN 222494049 U discloses a sleeve selector, including a housing with a bit / sleeve mounting base. The bit / sleeve mounting base has a workpiece hole, in which a sleeve workpiece is placed. A cylinder is assembled in the housing, and a pressure head with a V-shaped pressure port is provided at the output end of the cylinder. A through hole is provided on the side end of the bit / sleeve mounting base near the cylinder, vertically extending into the workpiece hole. The pressure head can movably pass through the through hole and extend into the workpiece hole for pressing and fixing the sleeve workpiece from the side. This patent can lock the bit / sleeve, but its locking method allows the bit / sleeve to still be removed from the pressure head under external force, failing to guarantee 100% foolproof protection. Utility Model Content

[0004] To solve the above problems, this utility model provides a foolproof and error-proof selector.

[0005] The technical solution adopted in this utility model is: A foolproof selector includes a housing, within which are a bit / sleeve mounting base, a locking block, and a cylinder. The bit / sleeve mounting base has a plurality of bit / sleeve mounting holes and radially penetrating grooves. A locking block is slidably mounted in each groove. The locking block is connected to the piston rod of the cylinder and has a figure-eight shaped through-hole. The top of the housing has a plurality of bit / sleeve positioning holes. The bit / sleeve passes sequentially through the bit / sleeve positioning holes of the housing and the figure-eight shaped through-hole of the locking block, and can be slidably inserted into the bit / sleeve mounting holes of the base. When the tail of the bit / sleeve is in the smaller hole of the figure-eight shaped through-hole, the tail is locked in the locking block, and the bit / sleeve is in a locked state. When the tail of the bit / sleeve is in the larger hole of the figure-eight shaped through-hole, the tail can be pulled out from the larger hole, and the bit / sleeve is in an open state.

[0006] Furthermore, it also includes several sensors and indicator lights that correspond one-to-one with the bit / sleeve mounting holes, as well as a PLC controller. The sensors are used to detect whether a bit / sleeve is inserted into the bit / sleeve mounting hole, and the indicator lights are used to indicate whether the bit / sleeve is in the open or locked state. The sensors, indicator lights, and cylinders are all connected to the PLC controller.

[0007] By using a PLC controller, the selector in this application can only remove the bit / sleeve when the program is unlocked, further ensuring error prevention and mitigation during the production process and improving production efficiency.

[0008] Furthermore, a sleeve is installed in the bit / sleeve mounting hole above the groove, and the sleeve is used to guide the bit / sleeve during insertion.

[0009] The sleeve guides the insertion and removal of the screwdriver bit / sleeve, making operation more flexible.

[0010] Furthermore, the bit / sleeve mounting base includes an upper mounting plate, a pad, and a base plate that are fixedly connected from top to bottom. The upper mounting plate is provided with a sleeve mounting hole, and the pad and the base plate are respectively provided with bit / sleeve mounting holes. The upper side of the base plate is provided with a groove for mounting a locking block. Both the pad and the sleeve are made of wear-resistant and corrosion-resistant materials.

[0011] Improve the service life of the device and reduce the difficulty and cost of machining the mounting base.

[0012] Furthermore, the cylinder and the locking block are connected via a floating joint, which improves the cylinder's service life.

[0013] Furthermore, the housing consists of a cover and a plate, which are detachably connected by screws to form a closed rectangular housing. The cover has mounting holes for mounting bit / sleeve mounting bases and a cylinder mounting plate, which is used to mount the cylinder. This facilitates the removal of the plate and opening of the housing for inspection and maintenance of the internal structure.

[0014] The beneficial effects of this utility model are: 1. By using a cylinder and a locking block, the bit / sleeve can only be removed when the machine is in operation. When not in operation, it cannot be removed even with a large amount of external force, thus ensuring error prevention and control during the production process and improving production efficiency.

[0015] 2. It has a simple structure and flexible operation, and can restrict the working sequence of multiple batch heads / sleeves at the same workstation. Attached Figure Description

[0016] Figure 1 This is an exploded view of a foolproof selector according to this application.

[0017] Figure 2 for Figure 1Enlarged view of section I in the middle.

[0018] Figure 3 This is an assembly structure diagram of a foolproof selector according to this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0020] See Figures 1-3 A foolproof selector includes a housing, a sensor bracket 3, a bit / sleeve mounting base, a cylinder fixing plate 5, a sleeve 8, a locking block 9, a floating connector 10, a cylinder 11, an indicator light 12, and a sensor 13. Several sleeves 8, locking blocks 9, floating connectors 10, cylinders 11, indicator lights 12, and sensors 13 are provided, each corresponding to a bit / sleeve. In this embodiment, five are provided.

[0021] The housing consists of a cover 1 and a cover plate 2. The cover plate 2 includes a bottom plate and a rear side plate. The cover 1 includes a rear side plate, left and right side plates, and a top plate. The rear ends of the left and right side plates are folded outward to form mounting surfaces, and the mounting surfaces have housing mounting holes. The cover 1 is detachably connected to the cover plate 2 with the mounting surfaces facing rearward by screws, forming a closed rectangular housing. The housing is fixed to the assembly line by screws passing through the housing mounting holes on its mounting surfaces. The top plate of the cover has a number of indicator light mounting holes and bit / sleeve positioning holes. The left and right side plates have corresponding bit / sleeve mounting holes and cylinder fixing plate mounting holes.

[0022] The cylinder fixing plate 5 is U-shaped, with its opening facing rearward. Both ends are vertically fixed to the cylinder fixing plate mounting holes on the housing by screws. Five cylinders 11 are fixedly installed in the U-shaped opening of the cylinder fixing plate 5. The cylinder piston rod extends rearward in the horizontal direction and connects to the floating joint 10. Each floating joint is connected to a locking block 9. The locking block 9 is provided with an 8-shaped through hole 91. The diameter of the small hole of the 8-shaped through hole is smaller than the outer diameter of the tail 141 of the bit / sleeve, and the diameter of the large hole is larger than the outer diameter of the tail of the bit / sleeve. The size of the connection between the small hole and the large hole is adapted to the diameter of the slot at the tail of the bit / sleeve.

[0023] The bit / sleeve mounting base includes an upper mounting plate 4, a pad 6, and a base plate 7, which are fixedly connected from top to bottom. The upper mounting plate 4 has a sleeve mounting hole, and the pad 6 and base plate 7 have corresponding bit / sleeve mounting holes. The upper side of the base plate has a radially penetrating groove through the bit / sleeve mounting hole, and a locking block 9 is slidably disposed in the groove. In this embodiment, both the pad 6 and the sleeve 8 are made of 40Cr material and have undergone heat treatment to increase their wear resistance.

[0024] The bit / sleeve mounting base is fixedly installed at both ends on the bit / sleeve mounting base mounting holes of the housing by screws, and the sleeve 8 is fixedly inserted into the sleeve mounting hole. The bit / sleeve 14 passes through the bit / sleeve positioning hole of the housing top plate and is inserted into the sleeve 8. Its tail 141 passes through the bit / sleeve mounting hole of the pad 6 and the figure-eight through hole on the locking block 9 in sequence, extending into the bit / sleeve mounting hole of the base plate 7. When the tail of the bit / sleeve is located in the small hole of the figure-eight through hole, it cannot be pulled out from the sleeve 8 because its tail diameter is larger than the diameter of the small hole. This state is the locked state. When the tail of the bit / sleeve is located in the large hole of the figure-eight through hole, it can be pulled out from the sleeve 8 because its tail diameter is smaller than the diameter of the large hole. This state is the open state.

[0025] The sensor bracket 3 consists of a vertical plate and a horizontal plate. The sensor bracket 3 is fixedly installed on the front side of the bit / sleeve mounting base by screws passing through the vertical plate. The sensor 13 is fixedly installed on the horizontal plate by screws. The indicator light 12 is fixedly installed in the indicator light mounting hole on the top plate of the housing.

[0026] Sensor 13, cylinder 11, and indicator light 12 are all connected to the PLC controller.

[0027] The working method of this application is as follows: In the installed state, the piston rod of cylinder 11 retracts, the bit / sleeve 14 is locked, and the indicator light 12 is off; in the working state, the piston rod of cylinder 11 extends, the bit / sleeve 14 is open, and the indicator light 12 is lit.

[0028] When a bit / sleeve needs to be removed, the PLC controller sends a command to the corresponding cylinder 11 and indicator light 12. Indicator light 12 lights up, and at the same time, the piston rod of cylinder 11 extends, causing the locking block 9 to slide forward, and the bit / sleeve changes from the locked state to the open state. At this time, the bit / sleeve can be removed manually.

[0029] After the work is completed, the bit / sleeve is manually returned to its installation position. When the corresponding sensor 13 detects that the bit / sleeve has been returned to its position, it sends a signal to the PLC controller. The PLC controller controls the corresponding indicator light 12 to turn off, and at the same time the corresponding cylinder 11 is activated, causing the locking block 9 to lock the bit / sleeve.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications are also within the protection scope of the present utility model.

Claims

1. A foolproof selector, comprising a housing, characterized in that, The housing is provided with a bit / sleeve mounting base, a locking block (9) and a cylinder (11); the bit / sleeve mounting base is provided with a number of bit / sleeve mounting holes and a groove that radially penetrates the bit / sleeve mounting holes, and a locking block (9) is slidably installed in each groove; the locking block (9) is connected to the piston rod of the cylinder (11), and the locking block (9) is provided with a figure-eight shaped through hole, and the top of the housing is provided with a number of bit / sleeve positioning holes. The bit / sleeve (14) passes through the bit / sleeve positioning hole of the housing and the figure-eight shaped through hole of the locking block (9) in sequence, and can be slidably inserted into the bit / sleeve mounting hole of the base. When the tail of the bit / sleeve is located in the small hole of the figure-eight shaped through hole, the tail is locked in the locking block (9) and the bit / sleeve is in a locked state; when the tail of the bit / sleeve is located in the large hole of the figure-eight shaped through hole, the tail can be pulled out from the large hole and the bit / sleeve is in an open state.

2. The foolproof and error-proof selector according to claim 1, characterized in that, It also includes several sensors (13) and indicator lights (12) that are set one-to-one with the bit / sleeve mounting holes, as well as a PLC controller. The sensors (13) are used to detect whether a bit / sleeve is inserted into the bit / sleeve mounting hole, and the indicator lights (12) are used to indicate whether the bit / sleeve is in the open or locked state. The sensors (13), indicator lights (12) and cylinders (11) are all connected to the PLC controller.

3. The foolproof and error-proof selector according to claim 1, characterized in that, A sleeve (8) is installed in the bit / sleeve mounting hole above the groove. The sleeve (8) is used to guide the bit / sleeve during insertion.

4. The foolproof and error-proof selector according to claim 2, characterized in that, The bit / sleeve mounting base includes an upper mounting plate (4), a pad (6), and a base plate (7) that are fixedly connected from top to bottom. The upper mounting plate (4) is provided with a sleeve mounting hole, and the pad (6) and the base plate (7) are respectively provided with bit / sleeve mounting holes. The upper side of the base plate is provided with a groove for mounting a clamping block. The pad (6) and the sleeve (8) are both made of wear-resistant and corrosion-resistant materials.

5. The error-proof selector according to claim 1, characterized in that, The cylinder (11) and the locking block (9) are connected by a floating joint (10).

6. The foolproof and error-proof selector according to claim 1, characterized in that, The housing consists of a cover (1) and a cover plate (2). The cover (1) and the cover plate (2) are detachably connected by screws to form a closed rectangular housing. The cover (1) is provided with mounting holes for mounting bit / sleeve mounting base and cylinder fixing plate (5). The cylinder fixing plate (5) is used to mount cylinder (11).

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