A lock turning tool for padlock processing

Abstract

The utility model relates to a lockset turnover frock for padlock processing. It includes: base, is equipped with limit block, limiting board, air cylinder on it, sliding seat, opposite the front -back direction sliding connection of base, is equipped with rotation execution mechanism on it, rotating seat, still fixed with the horizontal distribution of support plate of before and after on rotating seat, form the installation cavity between support plate with rotating seat, clamping mechanism, locate in the installation cavity, include left clamping block, right clamping block and drive mechanism, left clamping block with right clamping block are located left and right sides of support plate respectively, and part is higher than support plate, the body of padlock can be clamped fixed on support plate by clamping mechanism, when air cylinder promotes sliding seat to move back, padlock can finally butt joint with limiting board.

Description

Technical Field

[0001] This utility model relates to a lock positioning fixture, and more particularly to a lock flipping fixture for padlock processing. Background Technology

[0002] The lock body of a padlock needs to go through multiple machining processes, including but not limited to cutting, chamfering, stamping, drilling, boring, and polishing. When drilling or boring, since holes need to be drilled at both ends of the lock body (lock cylinder hole and lock rod hole), it is generally necessary to perform a front and back end flipping process during the drilling process.

[0003] Existing lock manufacturers generally employ automated production equipment for lock body machining to improve production efficiency and yield. Conventional automated lock body production equipment typically includes several machining stations and a transfer line for moving lock bodies between different stations. Especially at drilling or boring stations, high precision and stability of the lock body positioning are required. Therefore, when the lock body is transferred to the drilling or boring station by the transfer line, secondary positioning and fixation are necessary. To achieve these functions, a lock body flipping fixture needs to be developed. Furthermore, due to the wide variety of lock body specifications, resulting in different dimensions across different product lines, this lock body flipping fixture should also possess good versatility to reduce equipment investment. Summary of the Invention

[0004] This utility model provides a lock flipping fixture for padlock processing; it solves the problem in the prior art that a highly versatile flipping fixture is needed when the lock body is processed for automated hole machining.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a lock flipping fixture for padlock processing, comprising:

[0006] The base has a limit block fixed to the front end of its upper surface and a limit plate fixed to the rear end of its upper surface. The base is also equipped with cylinders distributed in the front-rear direction.

[0007] A sliding seat is slidably connected to the base in the front-back direction, and a rotary actuator is provided on it. The rotation axis is set vertically, and the cylinder can push the sliding seat to move back and forth reciprocally.

[0008] A rotating seat is located above the sliding seat and can be rotated by the rotating actuator. The rotating seat is also fixed with horizontally distributed support plates, and an installation cavity is formed between the support plates and the rotating seat.

[0009] The clamping mechanism is located in the mounting cavity and includes a left clamping block, a right clamping block and a driving mechanism. The left clamping block and the right clamping block are located on the left and right sides of the support plate, respectively, and are partially higher than the support plate.

[0010] The padlock body can be clamped and fixed to the support plate by the clamping mechanism. When the cylinder pushes the sliding seat to move backward, the padlock can finally abut against the limiting plate.

[0011] This invention enables high-precision positioning of the lock body along three axes: the X-axis (left-right), the Y-axis (front-back), and the Z-axis (up-down). The clamping and positioning principle is as follows: Initially, the sliding seat abuts against the limiting block, and the clamping mechanism is in an open state. The lock body to be processed is then transferred to the support plate via a transport mechanism, roughly centered. The drive mechanism on the clamping mechanism is then activated, causing the two clamping blocks to clamp the lock body. At this point, the X and Z axes of the lock body are fixed. Then, a cylinder pushes the sliding seat backward until the rear end face of the lock body abuts against the limiting plate, at which point the lock body is fully positioned. A drill bit or boring tool for hole machining can be fed forward from the rear end to machine the rear end face of the lock body. To prevent collision between the limiting plate and the cutting tool, a clearance opening is provided in the middle of the limiting plate. When the rear end face of the lock body is machined, the cylinder drives the sliding seat to reset, and then the rotary actuator drives the rotating seat to rotate 180°. At this time, the front end face of the lock body turns to the rear side, and then the cylinder drives the sliding seat to move backward again until the front end face of the lock body abuts against the limiting plate. Then, the corresponding hole is machined. After completion, the sliding seat resets, the clamping mechanism releases, and the lock body is removed. In this utility model, the support plate is used to limit the height of the lock body, that is, the positioning reference of the Z-axis. The clamping mechanism can fix the lock body in the center position in the left-right direction of the support plate, that is, the positioning reference of the X-axis. The limiting plate is used to limit the position of the lock body in the front-back direction, that is, the positioning reference of the Y-axis. Thus, most lock bodies can be positioned in the same position. When the lock body thickness is different, since the existing hole processing module has height adjustment, it is only necessary to adjust the height to suitability, so that the positioning of lock bodies of various sizes can be completed without changing the tooling.

[0012] Furthermore, the clamping surfaces of the two clamping blocks are inclined inwards, and the two clamping blocks are at an angle... The inward-sloping clamping surface provides downward pressure to the lock body, thereby improving clamping stability. Preferably, the contour of the clamping surface conforms to the outer contour of the lock body.

[0013] Furthermore, the driving mechanism comprises a power unit, a transmission gear, a first sliding block, and a second sliding block. The transmission gear is vertically rotatable on the rotating base. The first and second sliding blocks are located on the front and rear sides of the transmission gear, respectively, and are horizontally connected relative to the rotating base in the left-right direction. The first sliding block has a first rack meshing with the transmission gear, and the second sliding block has a second rack meshing with the transmission gear. The left clamping block is detachably mounted on the first sliding block, and the right clamping block is detachably mounted on the second sliding block. The power unit can drive the two sliding blocks to reciprocate in opposite directions. Through the above technical solution, the left and right clamping blocks can achieve synchronous and speed-in opposite movement, thereby ensuring that the clamping positioning center remains fixed.

[0014] Therefore, this utility model has the following features compared with the prior art: 1. The support plate in this utility model is used to limit the height of the lock body, the clamping mechanism can fix the lock body in the center position in the left and right direction of the support plate, and the limiting plate is used to limit the position of the lock body in the front and back direction, so that this utility model is applicable to most sizes of lock bodies. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Appendix Figure 2 This is a structural diagram of the sliding seat and the rotary seat;

[0017] Appendix Figure 3 This is a partial disassembly diagram of this utility model;

[0018] Appendix Figure 4 This is a schematic diagram of the clamping block structure;

[0019] Appendix Figure 5 This is a top view of the lock body after it has been fully fixed in place.

[0020] Appendix Figure 6 This is a top view of the lock body after it has been rotated back and forth according to this utility model. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Example 1: See Figure 1 A lock flipping fixture for padlock processing, comprising:

[0024] The base 100 has two horizontally arranged first slide rails 110 installed on it. A limit block 120 is fixed to the front end of the upper surface of the base. Two upright plates 130 are fixed on both sides of the base. A limit plate 140 is detachably installed between the two upright plates. An avoidance opening 141 is opened in the middle of the limit plate. The limit plate can be replaced at any time. The position and number of avoidance openings are different on different limit plates. The base is also equipped with cylinders 150 distributed in the front and rear directions.

[0025] The sliding seat 200 is slidably mounted on two first slide rails. The cylinder rod of the cylinder is connected to the front end of the sliding seat. The sliding seat is provided with a rotary actuator 210, the rotation axis is vertically set, and the rotary actuator is a rotary cylinder with a rotation angle of 180°.

[0026] The rotating seat 300 is located above the sliding seat and can be rotated by a rotating actuator. Two support plates 310 are fixed at the front and rear ends of the rotating seat. A horizontally distributed support plate 320 is detachably installed between the two support plates. An installation cavity is formed between the support plate and the rotating seat. Four second slide rails 330 are also fixed on the rotating seat.

[0027] The clamping mechanism 400 is located in the mounting cavity and includes a left clamping block 410, a right clamping block 420 and a driving mechanism. The left clamping block and the right clamping block are located on the left and right sides of the support plate, respectively, and are partially higher than the support plate.

[0028] The padlock body can be clamped and fixed to the support plate by the clamping mechanism. When the cylinder pushes the sliding seat to move backward, the padlock can finally abut against the limit plate.

[0029] The clamping surfaces of the two clamping blocks are inclined inwards, and the two clamping blocks are at an angle... The inward-sloping clamping surface provides downward pressure to the lock body, thereby improving clamping stability. Preferably, the contour of the clamping surface conforms to the outer contour of the lock body.

[0030] See Figure 3 and Figure 4 The drive mechanism consists of a power unit 430, a transmission gear 440, a first sliding block 450, and a second sliding block 460. The transmission gear is vertically mounted on a rotating seat. The first and second sliding blocks are located on the front and rear sides of the transmission gear, respectively, and are slidably connected to two second slide rails. The first sliding block has a first rack 470 that meshes with the transmission gear, and the second sliding block has a second rack 480 that meshes with the transmission gear. The left clamping block is detachably mounted on the first sliding block, and the right clamping block is detachably mounted on the second sliding block. The power unit is a single-cylinder cylinder, with the cylinder body fixed to one of the support plates, and the cylinder rod connected to any sliding block. Through the above technical solution, the left and right clamping blocks can move synchronously and at the same speed in opposite directions, thereby ensuring that the clamping positioning center is always fixed.

[0031] See Figure 5 and Figure 6 This embodiment can achieve high-precision positioning of the lock body along three axes: the X-axis (left-right), the Y-axis (front-back), and the Z-axis (up-down). The clamping and positioning principle of this embodiment is as follows: In the initial state, the sliding seat abuts against the limiting block, and the clamping mechanism is in a released state. Then, the lock body 10 to be processed is transferred to the support plate via the transport mechanism, positioned approximately in the center. The drive mechanism on the clamping mechanism is then activated, causing the two clamping blocks to clamp the lock body. At this time, the X-axis and Z-axis of the lock body are fixed. Then, the cylinder pushes the sliding seat backward until the rear end face of the lock body abuts against the limiting plate, at which point the lock body is fully positioned. A drill bit or boring tool for hole machining can be fed forward from the rear end to machine the rear end face of the lock body. To avoid collision between the limiting plate and the tool, a clearance opening is provided in the middle of the limiting plate. When the rear end face of the lock body is machined, the cylinder drives the sliding seat to reset, and then the rotary actuator drives the rotating seat to rotate 180°. At this time, the front end face of the lock body turns to the rear side, and then the cylinder drives the sliding seat to move backward again until the front end face of the lock body abuts against the limiting plate. Then, the corresponding hole is machined. After completion, the sliding seat resets, the clamping mechanism releases, and the lock body is removed. In this embodiment, the support plate is used to limit the height of the lock body, i.e., the positioning reference of the Z-axis. The clamping mechanism can fix the lock body in the center position in the left-right direction of the support plate, i.e., the positioning reference of the X-axis. The limiting plate is used to limit the position of the lock body in the front-back direction, i.e., the positioning reference of the Y-axis. This allows most lock bodies to be positioned in the same position. When the lock body thickness is different, since the existing hole processing modules have height adjustment, it is only necessary to adjust the height to suitability, so that the positioning of lock bodies of various sizes can be completed without changing the tooling.

[0032] Example 2: The difference between Example 2 and Example 1 is that the power unit is a geared motor, and its output end is connected to the transmission gear. Compared with Example 1, using a geared motor to control the opening and closing of the clamping mechanism will significantly reduce the vibration and noise generated by the cylinder opening and closing. However, the control difficulty and production cost are also higher, and the opening and closing action is not as fast as that of the cylinder.

[0033] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A lock flipping fixture for padlock processing, characterized in that, include: The base has a limit block fixed to the front end of its upper surface and a limit plate fixed to the rear end of its upper surface. The base is also equipped with cylinders distributed in the front-rear direction. A sliding seat is slidably connected to the base in the front-back direction, and a rotary actuator is provided on it. The rotation axis is set vertically, and the cylinder can push the sliding seat to move back and forth reciprocally. A rotating seat is located above the sliding seat and can be rotated by the rotating actuator. The rotating seat is also fixed with horizontally distributed support plates, and an installation cavity is formed between the support plates and the rotating seat. The clamping mechanism is located in the mounting cavity and includes a left clamping block, a right clamping block and a driving mechanism. The left clamping block and the right clamping block are located on the left and right sides of the support plate, respectively, and are partially higher than the support plate. The padlock body can be clamped and fixed to the support plate by the clamping mechanism. When the cylinder pushes the sliding seat to move backward, the padlock can finally abut against the limiting plate.

2. The lock flipping fixture for padlock processing according to claim 1, characterized in that: The clamping surfaces of the two clamping blocks are set to be inward.

3. The lock flipping fixture for padlock processing according to claim 1, characterized in that: The driving mechanism consists of a power unit, a transmission gear, a first sliding block, and a second sliding block. The transmission gear is vertically rotatable on the rotating base. The first and second sliding blocks are located on the front and rear sides of the transmission gear, respectively, and both sliding blocks are horizontally connected relative to the rotating base in the left-right direction. The first sliding block is provided with a first rack that meshes with the transmission gear, and the second sliding block is provided with a second rack that meshes with the transmission gear. The left clamping block is detachably mounted on the first sliding block, and the right clamping block is detachably mounted on the second sliding block. The power unit can drive the two sliding blocks to slide back and forth in opposite directions.

4. The lock flipping fixture for padlock processing according to claim 3, characterized in that: The power unit is a geared motor, and its output end is connected to the transmission gear.

5. The lock flipping fixture for padlock processing according to claim 3, characterized in that: The power unit is a cylinder, whose telescopic end is connected to any sliding block, and whose fixed end is fixed relative to the rotating seat.

6. The lock flipping fixture for padlock processing according to claim 1, characterized in that: Two upright plates are fixed on both sides of the base, and the limiting plate is horizontally and detachably installed between the two upright plates. An avoidance opening is provided in the middle of the limiting plate.

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