A reed nut machining apparatus and accessories

Abstract

The present application relates to a reed nut machining device technical field, specifically relates to a kind of reed nut machining equipment and accessory, reed nut machining equipment includes rack, upper die, lower die, upper limit part, lower limit part, upper drive mechanism and lower drive mechanism, wherein upper die includes upper shell, the bottom of upper shell is provided with upper pressing plate and multiple upper drawing head;Lower die is located below upper die, and includes lower shell, and the top of lower shell is provided with lower pressing plate and multiple lower drawing head;Under the action of upper drive mechanism, upper limit part can slide along radial direction, and can form stop cooperation with upper drawing head;Under the action of lower drive mechanism, lower limit part can slide along radial direction, and can form stop cooperation with lower drawing head.When using, by changing the position of upper limit part and lower limit part in radial direction, the number of upper drawing head and lower drawing head deep-drawing reed nut base material is changed, the function of one machine multi-stage deep-drawing is realized, to reduce production cost.

Description

Technical Field

[0001] The present invention relates to the technical field of reed nut processing devices, in particular to a reed nut processing device and accessories. Background Art

[0002] The reed nut is a multi-threaded fastener commonly used for thin materials. It has the advantages of good fastening effect and easy installation. It is widely used in industrial manufacturing, automobile assembly, electronic equipment and other fields.

[0003] The basic structure of the reed nut includes a square nut, the outside of which is wrapped by a spring steel shell, which has good elastic deformation ability. During use, when the spring steel shell is compressed by external force, its elastic potential energy causes the reed nut to fit tightly against the wall of the mounting hole, achieving a stable fixation. After the external force is released, the rebound characteristics of the spring steel shell further enhance the locking effect, preventing the reed nut from loosening due to vibration, external force impact and other factors during use, thereby ensuring the fastening performance.

[0004] During the processing of the reed nut, in order to process the cylindrical structure where the thread is located, a drawing (stamping) operation is required; when drawing the base material of the reed nut, a drawing device is required. In the related technology, Chinese patent CN116944345B discloses a stamping forming device for processing reed nuts. When using the stamping forming device for processing reed nuts, the reed is first placed on the circular hole module, and then the stamping body drives the stamping rod to press down, thereby driving the drawing head to punch the reed; it can also punch a countersink at the position of the original perforation of the reed, and then rise back to mid-air, and press the ring down through the telescopic sleeve to drive the stamping folding plate to move down. Under the guidance of the unilateral guide body and the clockwise operation of the micro motor, the drawing head is pushed clockwise around the hinge rod to a horizontal state, and then the stamping folding plate is used to squeeze downward.

[0005] However, existing drawing equipment also has some problems when drawing the base material of reed nuts: on the one hand, in order to ensure processing quality, deep drawing needs to be performed multiple times, and since the specifications and shapes of the punches required for each deep drawing are different, the operator not only needs to frequently replace the punches, but also needs to re-debug the equipment parameters, which greatly increases the complexity and time cost of the operation, thereby increasing the production cost of the reed nuts; on the other hand, during the drawing process, there is less material pressed on both sides in the narrower direction. Under the action of the drawing force, this part of the material is very likely to shrink excessively, which leads to quality problems, not only causing waste of raw materials, but also reducing production efficiency. Summary of the Invention

[0006] Based on this, it is necessary to provide a reed nut processing equipment and accessories to address the problems of high production cost and low production efficiency in the current production process of reed nuts.

[0007] The above purpose is achieved through the following technical solutions:

[0008] A reed nut processing device, the reed nut processing device comprising:

[0009] frame;

[0010] The upper mold is arranged on the frame and can slide in the vertical direction; the upper mold includes an upper shell, the bottom of which is provided with an upper pressing plate and a plurality of upper drawing heads, the plurality of upper drawing heads are sleeved with each other and can elastically slide relative to each other in the vertical direction, and all the upper drawing heads together form an inverted pyramid-shaped structure, wherein the upper drawing head located on the outermost side can form a stop fit with the upper shell and has an extreme position for downward movement relative to the upper shell, the upper pressing plate is sleeved on the outer sides of all the upper drawing heads and can elastically slide relative to the upper shell in the vertical direction;

[0011] The lower mold is arranged on the frame and is located below the upper mold; the lower mold includes a lower shell, and a lower pressing plate and a plurality of lower drawing heads are arranged on the top of the lower shell. The plurality of lower drawing heads are sleeved with each other and can elastically slide relative to each other in the vertical direction, wherein the lower drawing head located on the outermost side can form a stop fit with the lower shell and has an extreme position for downward movement relative to the lower shell. The lower pressing plate is sleeved on the outer sides of all the lower drawing heads and can elastically slide relative to the lower shell in the vertical direction and can form a stop fit with the upper pressing plate;

[0012] The upper limit portion is inserted into the upper housing and can slide in the radial direction and can form a stopper with the upper drawing head to limit the upper drawing head to an upper limit position of upward movement relative to the upper housing;

[0013] The lower limit portion is inserted into the lower housing and can slide in the radial direction and can form a stopper with the lower drawing head to limit the lower drawing head to an extreme position of downward movement relative to the lower housing;

[0014] an upper driving mechanism configured to provide a driving force for the upper limit portion to slide in a radial direction;

[0015] The lower driving mechanism is configured to provide a driving force for the lower limiting portion to slide in a radial direction.

[0016] Furthermore, the upper driving mechanism includes an upper base ring, an upper gear and an upper fixed ring. The upper base ring is inserted in the upper outer shell and can rotate around its own axis; an upper arc groove is provided on the upper base ring; an upper outer gear ring is fixedly sleeved on the upper base ring; the upper gear is inserted in the upper outer shell and can rotate around its own axis and engage with the upper outer gear ring; the upper fixed ring is fixedly inserted in the upper outer shell and is located above the upper base ring; an upper slide groove is provided on the upper fixed ring, the upper slide groove extends in the radial direction and is arranged corresponding to the upper arc groove.

[0017] Furthermore, the upper limit portion is an L-shaped structure and has a first long section and a first short section. The first long section is vertically arranged and can form a stop fit with the upper drawing head; the first short section is clamped between the upper base ring and the upper fixed ring; two first sliding columns are provided on the first short section, and the two first sliding columns are respectively slidably inserted in the upper arc groove and the upper sliding groove.

[0018] Furthermore, the number of the upper limit portions, upper arc grooves and upper sliding grooves is equal, and there are multiple of each, and they are all arranged along the circumferential direction.

[0019] Furthermore, the upper driving mechanism further includes a first driving member, which is configured to provide a driving force for the upper gear to rotate.

[0020] Furthermore, the lower driving mechanism includes a lower base ring, a lower gear and a lower fixed ring. The lower base ring is inserted in the lower outer shell and can rotate around its own axis; a lower arc groove is provided on the lower base ring; a lower outer gear ring is fixedly sleeved on the lower base ring; the lower gear is inserted in the lower outer shell and can rotate around its own axis and engage with the lower outer gear ring; the lower fixed ring is fixedly inserted in the lower outer shell and is located below the lower base ring; a lower lower groove is provided on the lower base ring, the lower lower groove extends in the radial direction and is arranged corresponding to the lower arc groove.

[0021] Furthermore, the lower limit portion is an L-shaped structure and has a second long section and a second short section. The second long section is vertically arranged and can form a stop fit with the lower drawing head; the second short section is clamped between the lower base ring and the lower fixed ring; two second sliding columns are provided on the second short section, and the two second sliding columns are respectively slidably inserted in the lower arc groove and the lower sliding groove.

[0022] Furthermore, the number of the lower limiting portion, the lower arc groove and the lower sliding groove is equal, and there are multiple of each, and they are all arranged along the circumferential direction.

[0023] Furthermore, the lower driving mechanism also includes a second driving member, which is configured to provide driving force for the rotation of the lower gear.

[0024] The present invention also provides an accessory for a reed nut processing device, which is applied to a reed nut processing device and also includes a third driving member, which is configured to provide a driving force for the upper mold to slide.

[0025] The beneficial effects of the present invention are:

[0026] The present invention relates to a reed nut processing equipment and accessories. In the process of drawing the reed nut substrate, first, under the action of the upper driving mechanism, the upper limit portion is made to correspond to the outermost upper drawing head, and under the action of the lower driving mechanism, the lower limit portion is made to correspond to the outermost lower drawing head, and then the substrate is placed on the lower pressing plate, and then the upper mold is driven to move downward. During the movement of the upper mold, the upper pressing plate first contacts the lower pressing plate and clamps the substrate, and then drives the substrate to move downward; when the innermost upper drawing head and the lower drawing head abut, as the upper mold moves, all the upper drawing heads except the outermost upper drawing head move upward to be flush with the bottom of the outermost upper drawing head, and then all the upper drawing heads drive the substrate downward while driving all the lower drawing heads except the outermost lower drawing head downward to achieve the first drawing of the substrate; then the upper mold is driven to reset upward, and then the upper limit portion is moved to correspond to the second upper drawing head from the outside to the inside, and the lower limit portion is moved to correspond to the second upper drawing head from the outside to the inside. The upper die and the lower drawing head correspond to each other, and then drive the upper die to move downward to realize the second drawing of the substrate; then repeat the process of resetting the upper die, moving the upper limit part and the lower limit part inward, and moving the upper die downward to realize multiple drawing of the substrate, thereby realizing the function of multi-stage drawing of one machine and helping to reduce production costs; and in other drawing processes except the first drawing, the outer upper punch head adjacent to the upper punch head corresponding to the upper limit part and the outer lower punch head adjacent to the lower punch head corresponding to the lower limit part can jointly clamp the substrate, thereby reducing the excessive shrinkage of the undrawn part of the substrate, which is beneficial to improving the processing quality of the substrate and reducing the generation of waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the three-dimensional structure of a reed nut processing device provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0029] Figure 3 A schematic diagram of a partially enlarged structure of a reed nut processing device provided by an embodiment of the present invention before deep drawing;

[0030] Figure 4 A schematic diagram of a partially enlarged structure of the reed nut processing equipment provided by an embodiment of the present invention during the first deep drawing;

[0031] Figure 5 A schematic diagram of a partially enlarged structure of the reed nut processing equipment provided by an embodiment of the present invention during the second drawing;

[0032] Figure 6A schematic diagram of a three-dimensional cross-sectional structure of an upper mold, an upper limit portion, and an upper drive mechanism of a reed nut processing device provided by an embodiment of the present invention during assembly;

[0033] Figure 7 An exploded schematic diagram of the upper die, upper limit portion, and upper drive mechanism of the reed nut processing equipment provided by an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of a three-dimensional cross-sectional structure of the lower mold, lower limit part and lower driving mechanism of the reed nut processing equipment provided by an embodiment of the present invention during assembly;

[0035] Figure 9 An exploded schematic diagram of the lower die, lower limiter, and lower drive mechanism of the reed nut processing equipment provided by an embodiment of the present invention;

[0036] Figure 10 A schematic diagram of the three-dimensional structure of the reed nut processing equipment provided by an embodiment of the present invention when multiple upper punches are assembled;

[0037] Figure 11 A schematic diagram of a three-dimensional cross-sectional structure of a plurality of upper punches of a reed nut processing device provided by an embodiment of the present invention when assembled;

[0038] Figure 12 A schematic diagram of the exploded parts of multiple upper punches of the reed nut processing equipment provided by an embodiment of the present invention;

[0039] Figure 13 A schematic diagram of a three-dimensional cross-sectional structure of a plurality of lower punches of a reed nut processing device provided by an embodiment of the present invention when assembled;

[0040] Figure 14 A schematic diagram of the exploded parts of multiple lower punches of the reed nut processing equipment provided in an embodiment of the present invention.

[0041] in:

[0042] 1. Frame; 2. Upper mold; 201. Upper housing; 2011. First mounting ring; 2012. Second mounting plate; 202. Upper pressure plate; 2021. Second mounting ring; 2022. Second spring; 203. Upper draw head; 2031. First chute; 2032. First protrusion; 2033. First spring; 2034. First mounting hole; 2035. First screw; 2036. First retaining protrusion; 3. Lower mold; 301. Lower housing; 3011. Third mounting ring; 3012. First mounting plate; 302. Lower pressure plate; 3021. Guide post; 3022. Fourth spring; 3023. Fifth mounting hole; 303. Lower draw head; 3031. Second chute; 3032. Second protrusion; 3033, third spring; 3034, third mounting hole; 3035, second screw; 3036, second stop cam; 4, upper limit portion; 401, first slide post; 5, lower limit portion; 501, second slide post; 6, upper drive mechanism; 601, upper base ring; 6011, upper arc groove; 6012, fourth mounting ring; 602, upper gear; 603, upper fixing ring; 6031, upper slide groove; 604, upper outer gear ring; 605, upper drive motor; 7, lower drive mechanism; 701, lower base ring; 7011, lower arc groove; 7012, fifth mounting ring; 702, lower gear; 703, lower fixing ring; 7031, lower slide groove; 704, lower outer gear ring; 705, lower drive motor; 8, first hydraulic cylinder. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0045] like Figures 1 to 14As shown, the spring nut processing equipment provided by one embodiment of the present invention is used for drawing the spring nut substrate, and is configured to include a frame 1, an upper mold 2, a lower mold 3, an upper limit part 4, a lower limit part 5, an upper driving mechanism 6 and a lower driving mechanism 7, wherein the upper mold 2 is arranged on the frame 1 and can slide in the vertical direction; the upper mold 2 includes an upper shell 201, and the bottom of the upper shell 201 is provided with an upper pressure plate 202 and a plurality of upper drawing heads 203, the plurality of upper drawing heads 203 are mutually sleeved, and can elastically slide relative to each other in the vertical direction, and all the upper drawing heads 203 together form an inverted pyramid structure, wherein the upper drawing head 203 located on the outermost side can form a stop fit with the upper shell 201, and has an extreme position for moving downward relative to the upper shell 201, and the upper pressure plate 202 and a plurality of upper drawing heads 203 are provided. The plate 202 is sleeved on the outside of all the upper drawing heads 203 and can slide elastically in the vertical direction relative to the upper shell 201; the lower mold 3 is arranged on the frame 1 and is located below the upper mold 2; the lower mold 3 includes a lower shell 301, and a lower pressure plate 302 and multiple lower drawing heads 303 are provided on the top of the lower shell 301. The multiple lower drawing heads 303 are sleeved on each other and can slide elastically in the vertical direction relative to each other, among which the lower drawing head 303 located on the outermost side can form a stop fit with the lower shell 301, and has an extreme position for moving downward relative to the lower shell 301. The lower pressure plate 302 is sleeved on the outside of all the lower drawing heads 303, and can slide elastically in the vertical direction relative to the lower shell 301, and can form a stop fit with the upper pressure plate 202.

[0046] The upper limit portion 4 is inserted in the upper shell 201 and can slide in the radial direction, and can form a stopper with the upper drawing head 203 to limit the upper drawing head 203 to move upward to the extreme position relative to the upper shell 201; the lower limit portion 5 is inserted in the lower shell 301 and can slide in the radial direction, and can form a stopper with the lower drawing head 303 to limit the lower drawing head 303 to move downward to the extreme position relative to the lower shell 301; the upper driving mechanism 6 is configured to provide a driving force for the upper limit portion 4 to slide in the radial direction; the lower driving mechanism 7 is configured to provide a driving force for the lower limit portion 5 to slide in the radial direction.

[0047] Specifically, in this embodiment, four upper drawing heads 203 are provided. The innermost upper drawing head 203 is a columnar structure, while the other upper drawing heads 203 are annular structures with different diameters to ensure interlocking. To facilitate forming an inverted pyramid-shaped structure with all upper drawing heads 203, the axial lengths of the upper drawing heads 203 decrease from inner to outer. In order to facilitate the elastic sliding of multiple upper drawing heads 203 relative to each other in the vertical direction, two first sliding grooves 2031 are symmetrically provided on the inner peripheral wall of all upper drawing heads 203 except the innermost upper drawing head 203. The first sliding groove 2031 is a strip-shaped structure and extends in the vertical direction. Two first sliding protrusions 2032 are symmetrically provided on the circumferential side wall or outer peripheral wall of all upper drawing heads 203 except the outermost upper drawing head 203. The first sliding protrusions 2032 are arranged on the upper part. When the innermost upper drawing head 203 is installed, the two first sliding protrusions 2032 on it are slidably inserted into the two first sliding grooves 2031 on the second upper drawing head 203 from the inside to the outside. When installing, the two first sliding protrusions 2032 on the second upper drawing head 203 from the inside to the outside are respectively slidably inserted into the two first sliding grooves 2031 on the third upper drawing head 203 from the inside to the outside; when installing, the two first sliding protrusions 2032 on the third upper drawing head 203 from the inside to the outside are respectively slidably inserted into the two first sliding grooves 2031 on the fourth upper drawing head 203 from the inside to the outside; a first spring 2033 is provided on the upper and lower end faces of each first sliding protrusion 2032, and the first spring 2033 extends in the vertical direction and abuts or is fixedly connected to the end of the first sliding groove 2031 to ensure that adjacent upper drawing heads 203 can elastically slide relative to each other in the vertical direction.

[0048] To facilitate the assembly of multiple upper drawing heads 203, all upper drawing heads 203 except the innermost upper drawing head 203 are divided into upper and lower parts with the bottom of the first slide groove 2031 as the dividing line, and the upper and lower parts can be detachably connected together; to facilitate the detachable connection between the upper and lower parts of the same upper drawing head 203, two first mounting holes 2034 are symmetrically opened on the outer peripheral wall of all upper drawing heads 203 except the innermost upper drawing head 203. The first mounting hole 2034 is a strip structure, extending vertically and passing upward through the top surface of the upper drawing head 203; to avoid interference, the first mounting hole 2034 and the first slide groove 2031 are staggered along the circumferential direction; a first screw 2035 is inserted at the bottom of each first mounting hole 2034, and the first screw 2035 detachably connects the upper and lower parts of the same upper drawing head 203 together.

[0049] To facilitate installation of the upper drawing head 203, a second circular mounting hole is provided on the bottom of the upper housing 201. A first annular groove is provided on the bottom top surface of the upper housing 201, coaxially arranged with the second mounting hole. A first mounting ring 2011 is inserted into the first annular groove. The first mounting ring 2011 has a T-shaped structure and is simultaneously inserted into the second mounting hole, with its top surface flush with the bottom top surface of the upper housing 201. During installation, the upper drawing head 203 passes through the first mounting ring 2011. To ensure that the outermost upper drawing head 203 can form a stopper with the upper housing 201, two first stop protrusions 2036 are symmetrically provided on the outer peripheral wall of the outermost upper drawing head 203. The first stop protrusions 2036 are located at the top of the outermost upper drawing head 203 and form a stopper with the first mounting ring 2011.

[0050] The upper pressing plate 202 is located outside the bottom of the upper housing 201 during installation, with its surface horizontally positioned. To facilitate installation of the upper pressing plate 202 and enable it to slide elastically vertically relative to the upper housing 201, a second mounting ring 2021 is provided on the bottom surface of the upper housing 201. The second mounting ring 2021 is coaxial with the first mounting ring 2011 and is secured to the upper housing 201 via bolts along with the first mounting ring 2011 during installation. A second spring 2022 is connected between the upper pressing plate 202 and the second mounting ring 2021. The second spring 2022 is vertically positioned and sleeved onto the outside of all upper drawing heads 203. Optionally, the upper pressing plate 202 can be configured as an annular structure.

[0051] For example, there are five drawing heads 303 , in which the innermost drawing head 303 is a columnar structure, and the other drawing heads 303 are all annular structures with different diameters to ensure that they can be connected to each other. The second sliding grooves 3031 are symmetrically provided on the inner peripheral wall of each of the draw-down deep heads 303 except the innermost draw-down deep head 303. The second sliding grooves 3031 are strip-shaped structures and extend in the vertical direction. The second sliding protrusions 3032 are symmetrically provided on the circumferential side walls or outer peripheral walls of each of the draw-down deep heads 303 except the outermost draw-down deep head 303. The two second sliding protrusions 3032 on the draw-down deep head 303 are arranged near the middle. The two second sliding protrusions 3032 on the innermost draw-down deep head 303 are slidably inserted into the two second sliding grooves 3031 on the second draw-down deep head 303 from the inside to the outside during installation. The two second sliding protrusions 3032 on 03 are respectively slidably inserted into the two second sliding grooves 3031 on the third draw-down deep head 303 from the inside to the outside during installation, the two second sliding protrusions 3032 on the third draw-down deep head 303 from the inside to the outside are respectively slidably inserted into the two second sliding grooves 3031 on the fourth draw-down deep head 303 from the inside to the outside during installation, and the two second sliding protrusions 3032 on the fourth draw-down deep head 303 from the inside to the outside are respectively slidably inserted into the two second sliding grooves 3031 on the fifth draw-down deep head 303 from the inside to the outside during installation; a third spring 3033 is provided on the lower end surface of each second sliding protrusion 3032, the third spring 3033 extends in the vertical direction, and abuts or is fixedly connected to the bottom end of the second sliding groove 3031.

[0052] In order to facilitate the assembly of multiple draw-down heads 303, all draw-down heads 303 except the innermost draw-down head 303 are divided into upper and lower parts with the top of the second slide groove 3031 as the dividing line, and the upper and lower parts can be detachably connected together, and the upper part of each draw-down head 303 corresponds to the lower parts of two adjacent draw-down heads 303 at the same time; in order to facilitate the detachable connection between the upper and lower parts of the same draw-down head 303, Two third mounting holes 3034 are symmetrically provided on the outer peripheral wall of all the pull-down deep heads 303. The third mounting holes 3034 are strip-shaped structures and extend vertically and pass downward through the bottom end surface of the pull-down deep head 303. To avoid interference, the third mounting holes 3034 and the second slide grooves 3031 are staggered along the circumferential direction. A second screw 3035 is inserted at the top of each third mounting hole 3034. The second screw 3035 connects the upper and lower parts of the same pull-down deep head 303 together in a detachable manner.

[0053] To facilitate installation of the draw head 303, a fourth circular mounting hole is provided on the top of the lower housing 301. A second annular groove is provided on the top surface of the lower housing 301, coaxially arranged with the fourth mounting hole. A third mounting ring 3011 is inserted into the second annular groove. The third mounting ring 3011 has a T-shaped structure and is simultaneously inserted into the fourth mounting hole, with its top surface flush with the top surface of the lower housing 301. During installation, the draw head 303 passes through the third mounting ring 3011. To ensure that the outermost draw head 303 forms a stop with the lower housing 301, two second stop protrusions 3036 are symmetrically provided on the outer peripheral wall of the outermost draw head 303. The second stop protrusions 3036 are located near the center of the outermost draw head 303 and form a stop with the third mounting ring 3011.

[0054] The lower pressing plate 302 is positioned horizontally on the top exterior of the lower housing 301 during installation. To prevent interference, a fifth mounting hole 3023 is provided on the lower pressing plate 302. This circular hole is coaxial with the fourth mounting hole, ensuring that the upper drawing head 203 can pass through the hole and abut against the lower drawing head 303 when the upper mold 2 moves, achieving drawing. To facilitate installation of the lower pressing plate 302 and enable the lower pressing plate 302 to slide elastically in the vertical direction relative to the lower housing 301, a first mounting plate 3012 is provided in the middle of the lower housing 301. The surface of the first mounting plate 3012 is arranged horizontally. Four guide posts 3021 are vertically provided at the four corners of the bottom of the lower pressing plate 302. When installed, the guide posts 3021 pass through the top of the lower housing 301 and are partially inserted into the lower housing 301. A fourth spring 3022 is sleeved on each guide post 3021. When installed, the top end of the fourth spring 3022 abuts or is fixedly connected to the bottom of the lower pressing plate 302, and the bottom end abuts or is fixedly connected to the top of the first mounting plate 3012. Optionally, the lower pressing plate 302 can be provided with a rectangular structure.

[0055] Initially, if Figure 3 As shown, the top ends of all the upper drawing heads 203 are flush, and the lower ends form an inverted pyramid structure, and the bottom ends and top ends of all the lower drawing heads 303 are flush.

[0056] During use, first, under the action of the upper driving mechanism 6, the upper limit part 4 and the outermost upper drawing head 203 are made to correspond, and at this time, the position of the outermost upper drawing head 203 is locked under the stop of the upper limit part 4; under the action of the lower driving mechanism 7, the lower limit part 5 and the outermost lower drawing head 303 are made to correspond, and at this time, the position of the outermost lower drawing head 303 is locked under the stop of the lower limit part 5.

[0057] The substrate is then placed on the lower pressing plate 302, which then drives the upper mold 2 downward. During the movement of the upper mold 2, the upper pressing plate 202 first contacts the lower pressing plate 302. Since the upper pressing plate 202 and the upper housing 201 are connected via the second spring 2022, and the lower pressing plate 302 and the lower housing 301 are elastically slidable via the guide post 3021 and the fourth spring 3022, the two can tightly secure the substrate with an adaptive clamping force after contact, thereby preventing damage to the substrate due to excessive clamping force and ensuring that the substrate remains stable and prevents displacement during the subsequent drawing process.

[0058] Since the bottom end of the innermost upper drawing head 203 is arranged lower than that of the other upper drawing heads 203, the innermost upper drawing head 203 will first abut against the lower drawing head 303; when the innermost upper drawing head 203 and the lower drawing head 303 abut against each other, based on the structural characteristics that multiple upper drawing heads 203 and the lower drawing heads 303 are mutually sleeved and elastically slidable, except for the outermost upper drawing head 203, the remaining upper drawing heads 203 slide upward in the vertical direction under the action of the abutting force through the cooperation of the first sliding protrusion 2032 and the first sliding groove 2031. When the bottoms of all the upper drawing heads 203 are flush, a stable drawing working end surface is formed. At this time, Figure 4 As shown, the upper drawing head 203 and the lower drawing head 303 work together to move the substrate downward while driving the other lower drawing heads 303 except the outermost lower drawing head 303 to move downward synchronously, so that a drawing groove is formed. By precisely controlling the drawing stroke and force, the first drawing operation on the substrate is completed.

[0059] After the first drawing is completed, the upper mold 2 is driven to reset upward, and then under the action of the upper driving mechanism 6, the upper limit part 4 and the second upper drawing head 203 from the outside to the inside are made to correspond. At this time, under the stop of the upper limit part 4, the second upper drawing head 203 from the outside to the inside has an extreme position of upward movement; under the action of the lower driving mechanism 7, the lower limit part 5 and the second lower drawing head 303 from the outside to the inside are made to correspond. At this time, under the stop of the lower limit part 5, the second lower drawing head 303 from the outside to the inside has an extreme position of downward movement.

[0060] Afterwards, the upper mold 2 descends again. Since the bottom end of the innermost upper drawing head 203 is arranged lower than other upper drawing heads 203, the innermost upper drawing head 203 will first abut against the lower drawing head 303. When the innermost upper drawing head 203 and the lower drawing head 303 abut against each other, based on the structural characteristics that multiple upper drawing heads 203 and the lower drawing heads 303 are mutually sleeved and elastically slidable, except for the outermost upper drawing head 203 and the second lower drawing head 303 from the outside to the inside, the remaining upper drawing heads 203 slide upward in the vertical direction under the action of the abutting force through the cooperation of the first sliding protrusion 2032 and the first sliding groove 2031. When the bottoms of all the upper drawing heads 203 except the outermost upper drawing head 203 are flush, a stable drawing working end surface is formed. At this time, Figure 5 As shown, the upper drawing head 203 and the lower drawing head 303 work together to drive the substrate to move downward, while driving the other lower drawing heads 303 except the outermost lower drawing head 303 and the second lower drawing head 303 from the outside to the inside to move downward synchronously, and completing the second drawing operation of the substrate by precisely controlling the drawing stroke and force.

[0061] By cyclically executing the operational process of "resetting the upper die 2, radially moving the upper and lower limiters 5, and then downwardly drawing the upper die 2," the multi-stage drawing operation of the substrate can be flexibly completed according to actual processing requirements. Because the multiple upper and lower drawing heads 203 and 303 utilize a combined ring and column structure with different diameters and an axial length that decreases from the inside to the outside, different drawing specifications can be achieved on the same device. This completely eliminates the tedious operations of frequent punch replacement and parameter adjustment required by traditional equipment, significantly reducing labor costs and equipment wear, and effectively improving production efficiency.

[0062] In addition, in the subsequent drawing process other than the first drawing, the outer upper drawing head 203 adjacent to the upper drawing head 203 corresponding to the upper limit portion 4, and the outer lower drawing head 303 adjacent to the lower drawing head 303 corresponding to the lower limit portion 5, will form a double clamping structure, thereby utilizing the structural characteristics of the upper drawing head 203 and the lower drawing head 303 themselves to provide additional support and constraint to the undrawn part of the substrate, which is beneficial to improving the processing quality of the substrate and reducing the generation of waste.

[0063] In a further embodiment, the upper driving mechanism 6 is arranged to include an upper base ring 601, an upper gear 602 and an upper fixed ring 603, the upper base ring 601 is inserted into the upper housing 201 and can rotate around its own axis; the upper base ring 601 is arranged with an upper arc groove 6011; the upper base ring 601 is fixedly sleeved with an upper outer gear ring 604; the upper gear 602 is inserted into the upper housing 201 and can rotate around its own axis and is engaged with the upper outer gear ring 604; the upper fixed ring 603 is fixedly inserted into the upper housing 201 and is located above the upper base ring 601; the upper fixed ring 603 is arranged with an upper sliding groove 6031, which extends in the radial direction and is arranged correspondingly with the upper arc groove 6011.

[0064] Specifically, in the embodiment, the upper base ring 601 is in T-shaped structure. In order to facilitate the installation of the upper base ring 601, a second mounting plate 2012 is fixedly inserted into the inside of the upper housing 201, and the plate surface of the second mounting plate 2012 is horizontally arranged; a sixth mounting hole is formed on the plate surface of the second mounting plate 2012, which is in circular structure and coaxially arranged with the second mounting hole; a fourth mounting ring 6012 is inserted at the sixth mounting hole, which is in T-shaped structure, and the upper base ring 601 is rotatably inserted into the fourth mounting ring 6012 at the small end and is stopped at the top of the fourth mounting ring 6012 at the large end. In order to facilitate the installation of the upper outer gear ring 604, a first ring table is arranged on the outer peripheral wall of the large end of the upper base ring 601, and the upper outer gear ring 604 is fixed at the top of the first ring table by bolts and nuts during installation. The upper arc groove 6011 is in arc structure, and the edge extends in the circumferential direction and radially from outside to inside, which ensures that the upper limiting part 4 can move in the radial direction. The upper fixed ring 603 is fixed on the top inner surface of the upper housing 201 and is coaxially arranged with the upper base ring 601. The upper sliding groove 6031 is in strip structure, which can cooperate with the upper arc groove 6011 and guide the upper limiting part 4 to move in the radial direction.

[0065] Further, in order to facilitate the installation of the upper gear 602 and provide driving force for the rotation of the upper gear 602, the upper driving mechanism 6 is further arranged to include a first driving member, which is configured to provide driving force for the rotation of the upper gear 602.

[0066] Specifically, the first driving member is an upper driving motor 605, which is arranged at the top of the upper housing 201 during installation, and the motor shaft of the upper driving motor 605 is arranged in the vertical direction downward, penetrates the upper housing 201 and is fixedly inserted into the upper gear 602, which ensures that the upper gear 602 can be driven to rotate.

[0067] In a further embodiment, the upper limit portion 4 is an L-shaped structure and has a first long section and a first short section. The first long section is vertically arranged and can form a stop fit with the upper drawing head 203; the first short section is clamped between the upper base ring 601 and the upper fixed ring 603; two first sliding columns 401 are provided on the first short section, and the two first sliding columns 401 are respectively slidably inserted in the upper arc groove 6011 and the upper sliding groove 6031.

[0068] Specifically in this embodiment, the first long section is positioned above the upper drawing head 203 during installation and abuts the top surface of the upper drawing head 203, ensuring a stop fit. To limit the upper limit portion 4 to only radial freedom, two upper stops are fixedly provided at the bottom of the upper fixing ring 603. The two upper stops are located on either side of the upper slide groove 6031. The first short section is inserted between the two upper stops during installation. Under the restriction of the two upper stops, the first short section can only move in the radial direction, allowing the upper limit portion 4 to move only in the radial direction. This allows the upper limit portion 4 to correspond to different upper drawing heads 203, thereby limiting the upper limit portion 4 to the extreme position of upward movement of the upper drawing head 203. The two first slide posts 401 are located on the upper and lower end surfaces of the first short section, ensuring a sliding fit with the upper arc groove 6011 and the upper slide groove 6031, respectively.

[0069] During use, when the position of the upper limit part 4 needs to be changed, the upper drive motor 605 is started, and the upper drive motor 605 drives the upper gear 602 to rotate. The upper gear 602 drives the upper base ring 601 to rotate through the meshing transmission with the upper outer gear ring 604. When the upper base ring 601 rotates, the upper limit part 4 is driven to move in the radial direction through the sliding cooperation between the upper arc groove 6011, the upper slide groove 6031 and the first slide column 401, so that the upper limit part 4 corresponds to different upper drawing heads 203, which is convenient for limiting the upper drawing head 203 to the extreme position of the upward movement.

[0070] In a further embodiment, in order to improve the positioning accuracy and stability of the upper drawing head 203 during the multi-stage drawing process, the number of upper limit parts 4, upper arc grooves 6011 and upper slide grooves 6031 is equal, and there are multiple of each, and they are all arranged along the circumferential direction.

[0071] Specifically, in this embodiment, the upper limit portions 4, upper arc grooves 6011, and upper slide grooves 6031 are equal in number, and three of each can be provided, evenly spaced along the circumference. Thus, during the drawing process, the three upper limit portions 4 work together to form a three-point limit support for the upper drawing head 203, effectively ensuring the stability of the mold structure and machining accuracy during the drawing process, significantly reducing the scrap rate due to limit failure.

[0072] In other embodiments, the lower driving mechanism 7 is configured to include a lower base ring 701, a lower gear 702 and a lower fixed ring 703, the lower base ring 701 is inserted in the lower outer shell 301, and can rotate around its own axis; a lower arc groove 701 is provided on the lower base ring 701; a lower outer gear ring 704 is fixedly sleeved on the lower base ring 701; the lower gear 702 is inserted in the lower outer shell 301, and can rotate around its own axis, and meshes with the lower outer gear ring 704; the lower fixed ring 703 is fixedly inserted in the lower outer shell 301, and is located below the lower base ring 701; a lower lower groove 7031 is provided on the lower base ring 701, the lower lower groove 7031 extends in the radial direction, and is arranged corresponding to the lower arc groove 7011.

[0073] Specifically, in this embodiment, the lower base ring 701 has an inverted T-shaped structure. To facilitate installation of the lower base ring 701, a seventh circular mounting hole is provided on the surface of the first mounting plate 3012. The seventh mounting hole is coaxial with the fourth mounting hole. A fifth mounting ring 7012 is inserted into the seventh mounting hole. The fifth mounting ring 7012 has a T-shaped structure. During installation, the lower base ring 701 rotates at its small end and inserts into the fifth mounting ring 7012, with its large end resting on the bottom of the fifth mounting ring 7012. To facilitate installation of the lower outer gear ring 704, a second annular platform is provided on the outer peripheral wall of the large end of the lower base ring 701. The lower outer gear ring 704 is secured to the bottom of the second annular platform via bolts and nuts during installation. The lower arc groove 7011 has an arc-shaped structure, with its edges extending circumferentially and radially inward, ensuring that it can guide the radial movement of the lower limit portion 5. The lower fixing ring 703 is fixed on the inner top surface of the bottom of the lower housing 301 and is coaxial with the lower base ring 701. The lower sliding groove 7031 is a strip structure to ensure that it can cooperate with the lower arc groove 7011 and guide the lower limit part 5 to move radially.

[0074] Furthermore, in order to facilitate the installation of the lower gear 702 and provide the driving force for the rotation of the lower gear 702 , the lower driving mechanism 7 is configured to further include a second driving member, which is configured to provide the driving force for the rotation of the upper gear 602 .

[0075] Specifically, the second driving component is the lower driving motor 705, which is arranged at the bottom of the lower shell 301 during installation. The motor shaft of the lower driving motor 705 is arranged upward in the vertical direction, passes through the lower shell 301, and is fixedly inserted on the lower gear 702 to ensure that it can drive the lower gear 702 to rotate.

[0076] In a further embodiment, the lower limit portion 5 is an L-shaped structure and has a second long section and a second short section. The second long section is vertically arranged and can form a stop fit with the lower drawing head 303; the second short section is clamped between the lower base ring 701 and the lower fixed ring 703; two second sliding columns 501 are provided on the second short section, and the two second sliding columns 501 are respectively slidably inserted in the lower arc groove 7011 and the lower sliding groove 7031.

[0077] Specifically in this embodiment, the second long section is located below the lower drawing head 303 during installation and abuts against the bottom end surface of the lower drawing head 303, ensuring a stop fit. To facilitate limiting the lower limit portion 5 to only have radial freedom, two lower stops are fixedly provided on the top of the lower fixing ring 703. The two lower stops are respectively located on either side of the lower sliding groove 7031. The second short section is inserted between the two lower stops during installation. Under the restriction of the two lower stops, the second short section can only move in the radial direction, allowing the lower limit portion 5 to move only in the radial direction. In turn, the lower limit portion 5 can correspond to different lower drawing heads 303, thereby limiting the lower limit portion 303 to the extreme position of downward movement. The two second sliding posts 501 are respectively located on the upper and lower end surfaces of the second short section, ensuring a sliding fit with the lower arc groove 7011 and the lower sliding groove 7031, respectively.

[0078] During use, when the position of the lower limit part 5 needs to be changed, the lower drive motor 705 is started, and the lower drive motor 705 drives the lower gear 702 to rotate. The lower gear 702 drives the lower base ring 701 to rotate through the meshing transmission with the lower outer gear ring 704. When the lower base ring 701 rotates, the sliding cooperation between the lower arc groove 7011, the lower slide groove 7031 and the second slide column 501 drives the lower limit part 5 to move in the radial direction, thereby making the lower limit part 5 correspond to different lower drawing heads 303, so as to limit the extreme position of the downward movement of the lower drawing head 303.

[0079] In a further embodiment, in order to improve the positioning accuracy and stability of the lower drawing head 303 during the multi-stage drawing process, the number of lower limit parts 5, lower arc grooves 7011 and lower sliding grooves 7031 is equal, and there are multiple of each, and they are all arranged along the circumferential direction.

[0080] Specifically, in this embodiment, the number of lower limit portions 5, lower arc grooves 7011, and lower sliding grooves 7031 is equal, and three of each can be provided, and all are evenly arranged along the circumference. Thus, during the drawing process, the three lower limit portions 5 work together to form a three-point limit support for the same lower drawing head 303, thereby effectively ensuring the stability of the mold structure and processing accuracy during the drawing process, and significantly reducing the scrap rate caused by limit failure.

[0081] In other embodiments, in order to facilitate the provision of the driving force for the sliding of the upper limiting part 4 in the radial direction, the upper driving mechanism 6 can also be provided with a first driving cylinder which is inserted into the upper housing 201 and arranged on the top of the second mounting plate 2012, the output shaft of the first driving cylinder is arranged horizontally and extends in the radial direction and is fixed on the upper limiting part 4, so as to ensure the sliding of the upper limiting part 4 in the radial direction.

[0082] Similarly, in order to facilitate the provision of the driving force for the sliding of the lower limiting part 5 in the radial direction, the lower driving mechanism 7 can also be provided with a second driving cylinder which is inserted into the lower housing 301 and arranged on the top of the first mounting plate 3012, the output shaft of the second driving cylinder is arranged horizontally and extends in the radial direction and is fixed on the lower limiting part 5, so as to ensure the sliding of the lower limiting part 5 in the radial direction.

[0083] It can be understood that the first driving cylinder can be a pneumatic cylinder, a second hydraulic cylinder or an electric cylinder.

[0084] It can be understood that the second driving cylinder can be a pneumatic cylinder, a third hydraulic cylinder or an electric cylinder.

[0085] Another embodiment of the present application also provides an accessory of the reed nut processing equipment, which comprises a third driving member configured to provide the driving force for the sliding of the upper mold 2.

[0086] In the embodiment, the third driving member is a first hydraulic cylinder 8 which is arranged on the rack 1 during installation and the output shaft of which is arranged downward in the vertical direction and fixed on the top of the upper housing 201, so as to ensure the upward and downward sliding of the upper mold 2 in the vertical direction.

[0087] The above embodiments only express several embodiments of the present application, the description of which is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application.

Claims

1. A reed nut processing equipment, characterized in that: Reed nut processing equipment includes: frame; The upper mold is arranged on the frame and can slide in the vertical direction; the upper mold includes an upper shell, the bottom of which is provided with an upper pressing plate and a plurality of upper drawing heads, the plurality of upper drawing heads are sleeved with each other and can elastically slide relative to each other in the vertical direction, and all the upper drawing heads together form an inverted pyramid-shaped structure, wherein the upper drawing head located on the outermost side can form a stop fit with the upper shell and has an extreme position for downward movement relative to the upper shell, the upper pressing plate is sleeved on the outer sides of all the upper drawing heads and can elastically slide relative to the upper shell in the vertical direction; The lower mold is arranged on the frame and is located below the upper mold; the lower mold includes a lower shell, and a lower pressing plate and a plurality of lower drawing heads are arranged on the top of the lower shell. The plurality of lower drawing heads are sleeved with each other and can elastically slide relative to each other in the vertical direction, wherein the lower drawing head located on the outermost side can form a stop fit with the lower shell and has an extreme position for downward movement relative to the lower shell. The lower pressing plate is sleeved on the outer sides of all the lower drawing heads and can elastically slide relative to the lower shell in the vertical direction and can form a stop fit with the upper pressing plate; The upper limit portion is inserted into the upper housing and can slide in the radial direction and can form a stopper with the upper drawing head to limit the upper drawing head to an upper limit position of upward movement relative to the upper housing; The lower limit portion is inserted into the lower housing and can slide in the radial direction and can form a stopper with the lower drawing head to limit the lower drawing head to an extreme position of downward movement relative to the lower housing; an upper driving mechanism configured to provide a driving force for the upper limit portion to slide in a radial direction; a lower driving mechanism configured to provide a driving force for the lower limiting portion to slide in a radial direction; The upper driving mechanism includes an upper base ring, an upper gear and an upper fixed ring. The upper base ring is inserted into the upper housing and can rotate around its own axis. The upper base ring is provided with an upper arc groove. The upper base ring is fixedly sleeved with an upper outer gear ring. The upper gear is inserted into the upper housing and can rotate around its own axis and mesh with the upper outer gear ring. The upper fixed ring is fixedly inserted into the upper housing and is located above the upper base ring. The upper fixed ring is provided with an upper slide groove, which extends in the radial direction and is arranged corresponding to the upper arc groove. The upper limit portion is an L-shaped structure and has a first long section and a first short section. The first long section is vertically arranged and can form a stop fit with the upper drawing head; the first short section is clamped between the upper base ring and the upper fixed ring; two first sliding columns are provided on the first short section, and the two first sliding columns are respectively slidably inserted in the upper arc groove and the upper slide groove.

2. The reed nut processing equipment according to claim 1, characterized in that: The number of the upper limit portion, the upper arc groove and the upper sliding groove is equal, and there are multiple of each of them, and they are all arranged along the circumferential direction.

3. The reed nut processing equipment according to claim 1, characterized in that: The upper driving mechanism further includes a first driving member configured to provide a driving force for rotating the upper gear.

4. The reed nut processing equipment according to claim 1, characterized in that: The lower driving mechanism includes a lower base ring, a lower gear and a lower fixed ring. The lower base ring is inserted in the lower outer shell and can rotate around its own axis; a lower arc groove is provided on the lower base ring; a lower outer gear ring is fixedly sleeved on the lower base ring; the lower gear is inserted in the lower outer shell and can rotate around its own axis and mesh with the lower outer gear ring; the lower fixed ring is fixedly inserted in the lower outer shell and is located below the lower base ring; a lower sliding groove is provided on the lower base ring, which extends in the radial direction and is arranged corresponding to the lower arc groove.

5. The reed nut processing equipment according to claim 4, characterized in that: The lower limit portion is an L-shaped structure and has a second long section and a second short section. The second long section is vertically arranged and can form a stop fit with the lower drawing head; the second short section is clamped between the lower base ring and the lower fixed ring; two second sliding columns are provided on the second short section, and the two second sliding columns are respectively slidably inserted in the lower arc groove and the lower sliding groove.

6. The reed nut processing equipment according to claim 5, characterized in that: The number of the lower limiting portion, the lower arc groove and the lower sliding groove is equal, and there are multiple of each of them, and they are all arranged along the circumferential direction.

7. The reed nut processing equipment according to claim 4, characterized in that: The lower driving mechanism further includes a second driving member configured to provide a driving force for rotating the lower gear.

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