A positioning device for fastener processing

Abstract

This utility model belongs to the field of processing positioning devices, and discloses a positioning device for fastener processing. It is connected to the upper die base of a stamping die, and includes a clamping plate with clamping holes on both side walls; a lifting component mounted on the upper die base; a base plate with a rotating mechanism mounted on the bottom; and a guide component mounted on the base plate. The clamping holes allow the starting position of the fastener's thread to be controlled by the hole depth, the starting position of the internal thread, and the torque force, ensuring that the starting position of the fastener's external thread corresponds to the bending direction of the fastener. Furthermore, the rotating mechanism allows the clamping plate to clamp fasteners on one side and remove them from the other, improving construction efficiency. The lifting component ensures that the installation and removal of fasteners are not affected or interfered with by the stamping die, and the guide component guides the movement of the clamping plate while transmitting the movement of the rotating mechanism to the clamping plate.

Description

Technical Field

[0001] This utility model belongs to the technical field of processing positioning devices, specifically relating to a positioning device for fastener processing. Background Technology

[0002] For L-shaped fasteners with external threads, in order to ensure that the short end (the bent section without external threads) can stay in the appropriate position after the threaded end is screwed into place, the fastener needs to be positioned according to the starting position of the external thread of the straight fastener during the bending process of turning the straight fastener into an L-shaped fastener. Then, the positioned fastener is bent so that the bending direction of all L-shaped fasteners formed in this way corresponds to the starting direction of its external thread. Thus, the short end of the L-shaped fasteners manufactured in this way can stay in the appropriate position when in use, ensuring the processing quality of the L-shaped fasteners. During the processing, a processing positioning device is required to position and clamp the fastener.

[0003] Existing processing positioning devices that can locate the bending processing direction based on the starting direction of the thread usually only have one working station, that is, the bending, stamping, clamping, loading and unloading processes are completed in one station. However, after bending and stamping the fastener, the processing positioning device needs to perform the unloading process first in order to provide space for the subsequent clamping and loading of the fastener. The setting that the loading and unloading processes cannot be performed simultaneously results in low processing efficiency and is not conducive to practical use. Utility Model Content

[0004] The present invention aims to provide a positioning device for fastener processing, which improves the degree of automation by optimizing the structure, thereby reducing the degree of human intervention and improving processing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning device for fastener processing, connected to the upper die base of a stamping die, comprising...

[0006] The clamping plate has clamping holes on both the left and right sides.

[0007] The lifting component is installed on the upper mold base and is used to control the lifting and lowering of the clamping plate;

[0008] The base plate has a rotating mechanism installed at its bottom, which is used to control the periodic rotation of the base plate.

[0009] The guide assembly is mounted on the base plate and is used to guide the lifting and lowering of the clamping plate.

[0010] The principle and effect of this technical solution: The setting of the threaded clamping hole allows the starting position of the external thread of the fastener to be controlled by the hole depth, the starting position of the internal thread, and the torque after the fastener is installed in the clamping hole. By controlling the above parameters, it can be ensured that the starting position of the external thread of the fastener corresponds to the bending direction of the fastener, thus ensuring the reliability of the L-shaped fastener during use. Furthermore, the setting of the rotating mechanism allows the clamping plate to clamp the fastener on one side and remove the fastener on the other side, resulting in higher construction efficiency. The setting of the lifting component ensures that the installation and removal of the fastener are not affected or interfered with by the stamping die, and the guide component can guide the movement of the clamping plate and transmit the movement of the rotating mechanism to the clamping plate.

[0011] The present invention is further configured such that: the lifting assembly includes a support ear, a lifting rod and a limiting plate, the support ear is fixed to the side wall of the upper mold base, the lifting rod is slidably inserted into the support ear, the clamping plate is slidably fitted onto the lifting rod, the two ends of the lifting rod are respectively installed with limiting plates, and an elastic unloading plate is installed at the bottom of the upper mold base, the elastic unloading plate can abut against the top surface of the clamping plate.

[0012] The principle and effect of this technical solution are as follows: By installing the support lugs on the upper mold base, the up-and-down movement of the upper mold base can drive the support lugs to move up and down. Furthermore, by abutting against the upper limiting plate, the limiting plate can drive the lifting rod to rise. And by abutting against the bottom surface of the clamping plate through the lower limiting plate, the lower limiting plate can drive the clamping plate to rise. That is, the upward movement of the upper mold base can drive the clamping plate to move upward. When the upper mold base moves downward, the weight of the clamping plate and the pressure of the elastic stripper plate can guide the clamping plate to descend. After the lower limiting plate abuts against the top surface of the base plate, the upper mold base can continue to move downward by sliding the support lugs relative to the lifting rod. Thus, the setting of the lifting component will not interfere with the stamping process of the stamping die.

[0013] The present invention is further configured such that: the limiting plate has a limiting protrusion, the cross-section of the limiting protrusion is irregular, the limiting protrusion is slidably inserted into the lifting rod, and a limiting bolt is slidably inserted into the limiting plate, the limiting bolt passes through the limiting protrusion and is threaded into the lifting rod.

[0014] The principle and effect of this technical solution are as follows: By setting the irregularly shaped limiting protrusion, the limiting plate cannot rotate relative to the lifting rod when it is installed. Furthermore, by setting the limiting bolt, the synchronous rotation of the lifting rod and the limiting plate will not damage the connection stability between the limiting bolt and the lifting rod and the limiting plate. At the same time, by rotating the limiting bolt, the limiting plate and the lifting rod can be disassembled and assembled, so that the lifting assembly can be disassembled relative to the clamping plate for subsequent replacement.

[0015] The present invention is further configured such that: the guide assembly includes a guide rod, a first limiting block and a second limiting block, a limiting groove is formed inside the base plate, the first limiting block is slidably fitted in the limiting groove, the guide rod is fixed on the first limiting block, the guide rod passes through the top surface of the base plate and is connected to the clamping plate, and the second limiting block is fitted and fixed on the guide rod and is located between the clamping plate and the base plate.

[0016] The principle and effect of this technical solution: The first limiting block slides in the limiting groove, thereby guiding the sliding of the guide rod. The guide rod is connected to the clamping plate, so the clamping plate can be limited by the guide rod when it moves up and down. Furthermore, the setting of the second limiting block can limit the maximum downward distance of the limiting rod, which in turn limits the maximum downward distance of the clamping plate. This ensures that the clamping plate can only move the fastener to the specified height for the stamping die to bend and form.

[0017] The present invention is further configured such that: the guide assembly also includes a cover plate and a third limiting block; a groove is provided on the top surface of the clamping plate; the cover plate is installed on the clamping plate; the guide rod extends into the groove and the top surface of the guide rod abuts against the cover plate; the third limiting block is threaded onto the guide rod and abuts against the bottom surface of the groove.

[0018] The principle and effect of this technical solution: By setting up the cover plate and the sink, the sink can be opened by removing the cover plate, thereby exposing the third limiting block to the outside. Then, the third limiting block can be disassembled relative to the guide rod by rotating, thereby allowing the clamping plate to be assembled and disassembled relative to the guide rod.

[0019] The present invention is further configured such that: the rotating mechanism is a rotary cylinder, and the movable end of the rotary cylinder is connected to the bottom surface of the base plate.

[0020] The principle and effect of this technical solution: By setting up a rotary cylinder, the base plate can be driven to rotate back and forth by the guide component during the reciprocating rotation of the rotary cylinder, so that the two clamping holes on the left and right can be periodically switched.

[0021] The present invention is further configured such that: a clamping sleeve is detachably installed in the clamping hole, and the clamping sleeve has a clamping cavity with internal threads.

[0022] The principle and effect of this technical solution: By installing a detachable clamping sleeve and connecting the clamping cavity of the clamping sleeve to the fastener body by thread, the clamping sleeve can be replaced by disassembly after the internal thread of the clamping cavity wears due to installation and use, without having to replace the clamping plate body, thus reducing subsequent maintenance and replacement costs. Attached Figure Description

[0023] Figure 1This is a front view of Embodiment 1 of the present utility model;

[0024] Figure 2 for Figure 1 Enlarged view of a partial sectional structure;

[0025] Figure 3 for Figure 2 Enlarged isometric view of the middle limiting plate;

[0026] Figure 4 This is a structural diagram of the present invention during bending and stamping;

[0027] Figure 5 This is a partial structural diagram of the clamping hole in Embodiment 2 of this utility model. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0029] The reference numerals in the accompanying drawings include:

[0030] 110. Upper mold base; 120. Flexible stripper plate;

[0031] 210. Clamping plate; 211. Clamping hole; 212. Settling groove; 220. Clamping sleeve; 221. Clamping cavity;

[0032] 220. Base plate; 221. Limiting groove;

[0033] 230. Guide assembly; 231. Guide rod; 232. First limiting block; 233. Second limiting block; 234. Third limiting block; 235. Cover plate;

[0034] 240. Rotating mechanism;

[0035] 250. Lifting assembly; 251. Support lug; 252. Lifting rod; 253. Limiting plate; 2531. Limiting protrusion; 254. Limiting bolt;

[0036] 310. Fastener body.

[0037] Example 1:

[0038] As attached Figure 1-4 As shown, this utility model discloses a positioning device for fastener processing, which is connected to the upper die base 110 of a stamping die. In this design, the stamping die is a bending die, including a bending punch, an elastic stripper plate 120, a bending die, a punch side support block, a lower die base, and other necessary device structures. These are only briefly described in this design. (See attached diagram.) Figure 1 and attached Figure 4As shown, without labeling, the device includes a clamping plate 210, a lifting assembly 250, a base plate 220, and a guide assembly 230. The upper die holder 110 of the stamping die is connected to the movable end of the hydraulic press. The movable end of the hydraulic press drives the upper die holder 110 to move up and down, thereby synchronously driving the bending punch, elastic unloading plate 120, and other components to move up and down relative to the bending die. The lower die holder is installed on the machine base of the hydraulic press, and the bending die, punch side support block, etc. are installed on the lower die holder.

[0039] The clamping plate 210 has clamping holes 211 on its left and right side walls. The clamping holes 211 are threaded holes, and the axial direction of the clamping holes 211 is perpendicular to the stamping direction of the stamping die.

[0040] The lifting assembly 250 includes a support lug 251, a lifting rod 252, and a limiting plate 253. The support lug 251 is fixed to the side wall of the upper mold base 110. The lifting rod 252 is slidably inserted into the support lug 251. The clamping plate 210 is slidably fitted onto the lifting rod 252. The limiting plates 253 are detachably installed at both ends of the lifting rod 252. The limiting plates 253 have limiting protrusions 2531, and the cross-section of the limiting protrusions 2531 is irregular (it can be as shown in the attached figure). Figure 4 The cross-section shown is square or other non-circular cross-sections. The limiting protrusion 2531 is slidably inserted into the lifting rod 252 (both ends of the lifting rod 252 have grooves that are slidably adapted to the limiting protrusion 2531). The limiting plate 253 is slidably inserted with the limiting bolt 254. The limiting bolt 254 passes through the limiting protrusion 2531 and is threaded into the lifting rod 252. A part of the elastic unloading plate 120 is located above the clamping plate 210. Therefore, when the elastic unloading plate 120 moves downward under the drive of the upper mold base 110, it can synchronously drive the clamping plate 210 to move downward by abutting, so as to avoid friction and other factors that hinder the clamping plate 210 from moving downward under its own weight.

[0041] A rotating mechanism 240 is installed at the bottom of the base plate 220. The rotating mechanism 240 is a rotary cylinder. The movable end of the rotary cylinder is connected to the bottom surface of the base plate 220. The rotary cylinder is installed on the machine tool and is used to control the base plate 220 to rotate horizontally by 180°. It is used to control the periodic position change of the left and right clamping holes 211. The rotary cylinder is a commonly used rotation control component, such as FOUK-TP32 or FOUK-TP40 rotary cylinders from Hangzhou FOUK Machinery Technology Co., Ltd.

[0042] The guide assembly 230 includes a guide rod 231, a first limiting block 232, a second limiting block 233, a cover plate 235, and a third limiting block 234. A limiting groove 221 is formed inside the base plate 220. The first limiting block 232 is slidably fitted in the limiting groove 221. The guide rod 231 is fixed on the first limiting block 232. The second limiting block 233 is fitted and fixed on the guide rod 231 and is located between the clamping plate 210 and the base plate 220. A recessed groove 212 is formed on the top surface of the clamping plate 210. The cover plate 235 is installed on the clamping plate 210. The guide rod 231 extends into the recessed groove 212, and the top surface of the guide rod 231 abuts against the cover plate 235. The third limiting block 234 is threadedly fitted on the guide rod 231, and the third limiting block 234 abuts against the bottom surface of the recessed groove 212. Among them, the guide components 230 are arranged in multiple sets at intervals along the circumference of the base plate 220. In this scheme, there can be 4 sets. By setting multiple sets of guide components 230, a better guiding and limiting effect can be achieved, as well as the ability to withstand stronger lateral pressure.

[0043] In use, after the straight rod-shaped fastener body 310 is screwed into the clamping plate 210, a certain torque force needs to be applied. This fixed torque force ensures that the starting end of the thread of the fastener body 310 is at a specified angle after the threaded end is screwed into place. During stamping, the upper die holder 110 moves downwards first. At this time, because the lower limiting plate 253 no longer supports the clamping plate 210 due to its downward movement, the clamping plate 210 begins to move downwards under its own gravity. After the second limiting block 233 abuts against the top surface of the base plate 220, the clamping plate 210 reaches its maximum position. During the large downward movement, the straight rod-shaped fastener is placed against the bending die. The hydraulic press continues to drive the upper die holder 110 to move downward. After the lower limit plate 253 abuts against the bottom plate 220, the upper die holder 110 drives the bending punch and the elastic stripper plate 120 to move downward relative to the lifting rod 252. After the elastic stripper plate 120 abuts against the surface of the cover plate 235, the upper die holder 110 continues to press down, causing the bending punch to continue to move downward until the bending punch punches the straight rod-shaped fastener. The punch side support block distributes the lateral pressure on the bending punch during the punching process. After stamping, as the upper die holder 110 moves upward, the bending punch leaves the fastener body 310 first, and then the elastic stripper plate 120 leaves the surface of the cover plate 235. After the support ear 251 abuts against the upper limit plate 253, the upper die holder 110 drives the lifting component 250 to rise. After the lower limit plate 253 abuts against the clamping plate 210, the rise of the upper die holder 110 can simultaneously drive the clamping plate 210 to rise through the lifting component 250, that is, to lift the stamped and bent fastener body 310. Then, through the rotation of the rotating mechanism 240, the clamping plate 210 can drive the stamped fastener body 310 to rotate horizontally by 180°. At this time, the fastener body 310 to be stamped can be installed on one side, and the stamped fastener body 310 can be disassembled on the other side. The disassembly and assembly process can be carried out manually or by a robot, which is more efficient and the manual operation part of the whole process is less, saving manpower.

[0044] The principle behind precisely limiting the starting thread direction of the threaded end of the fastener body 310 via the threaded hole is as follows: the threaded end of the fastener body 310 has an external thread starting point, and the threaded hole of the clamping hole 211 also has an internal thread starting point. Only when the starting point of the external thread corresponds to the starting point of the internal thread can the fastener body 310 be further inserted into the clamping hole 211 through subsequent rotation. Therefore, the starting point of the internal thread of the threaded hole of the clamping hole 211 can limit the screw-in angle of the fastener body 310. Furthermore, through a specific threaded hole depth, the fastener body 310 can be precisely positioned... 10. While rotating a specific number of turns to complete the thread conversion, the starting point of the external thread of the fastener body 310 is rotated to the position where it mates with the threaded hole. At this point, since the hole depth is fixed, the fastener body 310 cannot continue to go deeper. By applying a certain torque, the degree of engagement of the fastener body 310 is finely adjusted, so that the starting point of the thread of the fastener body 310 rotates to the final position, that is, the position corresponding to the bending and stamping direction. Then, the threaded end of the fastener body can be accurately positioned by the starting point of the threaded hole, the hole depth of the threaded hole, and the torque.

[0045] Example 2:

[0046] The difference from Embodiment 1 is that in Embodiment 2, the clamping hole 211 is a countersunk hole (a countersunk hole, which allows the head of bolted fasteners to be recessed during use to prevent the head of the bolted fastener from damaging the outer surface of the part to be connected). A clamping sleeve 220 is slidably inserted into the clamping hole 211. The clamping sleeve 220 has a clamping cavity 221 with internal threads, and the clamping cavity 221 is threadedly engaged with the fastener body 310. Specifically, a flange plate can be fixed to the outside of the clamping sleeve 220. The flange plate is installed in the clamping hole 211 by bolt connection and pin positioning, thereby limiting the position of the clamping sleeve 220. It can also be other detachable connection methods with installation and positioning effects.

[0047] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0048] Among them, insert and sliding insert are mating bodies with holes, the cross section of the shaft or rod matches the hole, and the shaft or rod can slide relative to the hole. Threaded insert is a hole with threads, the shaft or rod is threaded, and the shaft or rod is connected to the mating body by screwing. Detachable installation can be by bolt thread connection or bolt and nut connection, etc., depending on what can be actually achieved.

[0049] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A positioning device for fastener processing, connected to the upper die holder of a stamping die, characterized in that: include The clamping plate has clamping holes on both the left and right sides. A lifting component is installed on the upper mold base and is used to control the lifting and lowering of the clamping plate; A base plate with a rotating mechanism installed at its bottom, the rotating mechanism being used to control the periodic rotation of the base plate; A guide assembly is mounted on the base plate and is used to guide the lifting and lowering of the clamping plate.

2. The positioning device for fastener processing as described in claim 1, characterized in that: The lifting assembly includes a support lug, a lifting rod, and a limiting plate. The support lug is fixed to the side wall of the upper mold base. The lifting rod is slidably inserted into the support lug. The clamping plate is slidably fitted onto the lifting rod. The limiting plate is installed at both ends of the lifting rod. An elastic unloading plate is installed at the bottom of the upper mold base. The elastic unloading plate can abut against the top surface of the clamping plate.

3. The positioning device for fastener processing as described in claim 2, characterized in that: The limiting plate has a limiting protrusion with an irregular cross-section. The limiting protrusion is slidably inserted into the lifting rod, and a limiting bolt is slidably inserted into the limiting plate. The limiting bolt passes through the limiting protrusion and is threaded into the lifting rod.

4. The positioning device for fastener processing as described in claim 1, characterized in that: The guiding assembly includes a guide rod, a first limiting block, and a second limiting block. A limiting groove is formed inside the base plate. The first limiting block is slidably fitted in the limiting groove. The guide rod is fixed on the first limiting block. The guide rod passes through the top surface of the base plate and is connected to the clamping plate. The second limiting block is fitted and fixed on the guide rod and is located between the clamping plate and the base plate.

5. A positioning device for fastener processing as described in claim 4, characterized in that: The guide assembly also includes a cover plate and a third limiting block. The top surface of the clamping plate has a recessed groove. The cover plate is installed on the clamping plate. The guide rod extends into the recessed groove, and the top surface of the guide rod abuts against the cover plate. The third limiting block is threaded onto the guide rod, and the third limiting block abuts against the bottom surface of the recessed groove.

6. A positioning device for fastener processing as described in claim 1, characterized in that: The rotating mechanism is a rotary cylinder, and the movable end of the rotary cylinder is connected to the bottom surface of the base plate.

7. A positioning device for fastener processing as described in claim 1, characterized in that: A clamping sleeve is detachably installed in the clamping hole, and the clamping sleeve has a clamping cavity with internal threads.

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