Metal elastic sheet polishing device

Abstract

The invention relates to the technical field of grinding devices, and particularly discloses a metal elastic sheet grinding device which comprises a rack, and two sets of grinding assemblies which are opposite up and down are arranged on the rack. Each polishing assembly comprises a polishing mold, a polishing driving part for driving the polishing mold to move left and right, a separator arranged in the polishing mold, and a separation driving part for driving the separator to move up and down; a convex V-shaped polishing surface is formed on the upper surface of the lower polishing die, and a concave V-shaped polishing surface is formed on the lower surface of the upper polishing die; each grinding mold is provided with a plurality of separation grooves which are distributed in the left-right direction, each separator comprises a plurality of separation plates corresponding to the separation grooves, and when the separation driving part drives the separators to approach the V-shaped elastic piece, the separation plates can stretch out of the separation grooves to the left side and the right side of the V-shaped elastic piece, so that the V-shaped elastic piece can move left and right along with one grinding mold. The metal elastic sheet polishing device has a good polishing effect on the V-shaped elastic sheet.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, and in particular to a metal spring grinding device. Background Art

[0002] Metal shrapnel, also known as pot pieces, is a thin sheet of metal components made of stainless steel. It is mainly used in membrane switches, contact switches, PCB boards, FPC boards, medical devices and other products. The shapes of metal shrapnel vary, and are usually designed according to their application and functional requirements. Common shrapnel shapes include rectangular shrapnel, circular shrapnel, U-shaped shrapnel, V-shaped shrapnel, etc. Among them, the V-shaped shrapnel has high elasticity and durability, and is suitable for applications that require frequent use and require long-term performance. It can also provide angle support and positioning, and is suitable for occasions that require specific angle fixation. After the V-shaped shrapnel is stamped and formed, burrs may appear on the surface of the shrapnel. These burrs need to be removed by grinding to ensure the flatness and smoothness of the shrapnel surface.

[0003] The metal shrapnel grinding device in the prior art, such as a shrapnel grinding device disclosed in the Chinese patent document with the authorization announcement number CN220197250U, is provided with an air suction component at the telescopic end of the telescopic mechanism, so that the negative pressure air pump adsorbs and fixes the shrapnel on the air suction cup by gas suction, thereby fixing the shrapnel and solving the problem of the shrapnel being difficult to fix in the prior art. In addition, the shrapnel grinding device also controls the height position of the shrapnel relative to the grinding plate through the telescopic mechanism, and ensures the consistency of the grinding force during the grinding process of the shrapnel, so as to further ensure the uniformity of the grinding of the shrapnel.

[0004] However, in the process of grinding the V-shaped spring clips, the above-mentioned spring clip grinding device in the prior art uses an air suction component to fix the V-shaped spring clip on the grinding plate for grinding due to the special shape of the V-shaped spring clip, and the grinding plate cannot effectively contact the inner side of the V-shaped spring clip. In addition, due to the compression rebound performance of the V-shaped spring clip, that is, it will undergo elastic deformation when subjected to external force, which can easily lead to difficulty in controlling the grinding force, which may cause some areas to be over-grinded and other areas to be under-grinded, resulting in a poor grinding effect on the V-shaped spring clip. Summary of the invention

[0005] The present invention provides a metal shrapnel grinding device, aiming to solve the problem of poor grinding effect on V-shaped shrapnel existing in the shrapnel grinding device in the related art.

[0006] The present invention provides a metal shrapnel grinding device that adopts the following technical solution: A metal shrapnel grinding device, used for grinding V-shaped shrapnel, comprises a frame, on which two groups of grinding components facing each other are arranged, each of which comprises a grinding mold, a grinding driving member for driving the grinding mold to move left and right, a separator arranged in the grinding mold, and a separator driving member for driving the separator to move up and down; the upper surface of the lower grinding mold forms a convex V-shaped grinding surface for placing the V-shaped shrapnel and grinding the inner side surface of the V-shaped shrapnel, and the lower surface of the upper grinding mold forms a concave V-shaped grinding surface for Abutting the outer side surface of the V-shaped spring piece and grinding the outer side surface of the V-shaped spring piece; each of the grinding molds is provided with a plurality of partition grooves arranged left and right to divide the V-shaped grinding surface into a plurality of spring piece accommodating positions corresponding to the V-shaped spring piece, and each of the separators includes a plurality of partition plates corresponding to the partition grooves. When the partition driving member drives the separator to approach the V-shaped spring piece, the partition plate can extend from the partition groove to the left and right sides of the V-shaped spring piece, so that the V-shaped spring piece can move left and right with one of the grinding molds, thereby enabling the other grinding mold to grind the V-shaped spring piece.

[0007] By adopting the above technical solution, two groups of grinding components facing each other are arranged on the frame, and the two groups of grinding components facing each other can cooperate with each other to position and support the V-shaped spring piece, and grind the inner and outer sides of the V-shaped spring piece. During the grinding process, one of the grinding molds is relatively still to adapt to the shape of the V-shaped spring piece, and provide stable support for it during the grinding process to prevent the V-shaped spring piece from being deformed due to the grinding force, so that the V-shaped spring piece always maintains its original V-shaped structure, thereby more accurately controlling the grinding position and strength, and ensuring the consistency of the grinding quality; the other grinding mold moves relatively to adapt to the shape of the V-shaped spring piece to cover the entire inner or outer side of the V-shaped spring piece for grinding, thereby applying the grinding pressure more evenly, ensuring that the inner or outer side of the V-shaped spring piece is evenly polished, avoiding the problem of local over-grinding or under-grinding, and having a better grinding effect. Among them, the setting of the dividing groove and the divider can not only cooperate with the grinding mold to drive the V-shaped spring piece to move back and forth to realize the grinding action, but also enable the grinding mold to position, support and grind multiple V-shaped spring pieces at the same time, thereby improving the grinding efficiency, grinding consistency and grinding accuracy, and can be suitable for mass production.

[0008] Furthermore, the frame is also provided with a lifting bracket, a lifting drive member for driving the lifting bracket to move up and down, and a fixed mold opposite to the polishing mold below; the upper surface of the fixed mold forms an outwardly convex V-shaped placement surface for placing V-shaped spring pieces, the side of the V-shaped placement surface close to the polishing mold forms a pretreatment station, and the side of the V-shaped placement surface away from the polishing mold forms a loading station, the lifting bracket is equipped with a loading mechanism distributed in the air above the fixed mold for left and right movement, the polishing assembly above is installed on the lifting bracket, and is connected to the loading mechanism through a reset spring.

[0009] Furthermore, the feeding mechanism includes an outer shell, an air suction piece arranged in the outer shell, and a ventilation pipe connected to the air suction piece. The lower surface of the air suction piece forms an inwardly concave V-shaped adsorption surface for abutting against the outer side surface of the V-shaped spring piece and adsorbing the outer side surface of the V-shaped spring piece.

[0010] Furthermore, the feeding mechanism also includes a grinder arranged in the outer shell, the air suction member has a plurality of spacing grooves arranged on the left and right sides to divide the V-shaped adsorption surface into a plurality of spring sheet accommodating positions corresponding to the V-shaped spring sheets, and the grinder includes a plurality of grinding plates corresponding to the spacing grooves of the air suction member, and the grinding plates can extend downward from the spacing grooves to the left and right sides of the V-shaped spring sheet to grind the left and right end faces of the V-shaped spring sheet.

[0011] Furthermore, the upper grinding mold is provided with an active rack extending left and right, and the grinder also includes a vibrating tooth portion that can cooperate with the active rack. A vibration spring is provided between the grinder and the outer shell. When the upper grinding mold moves left and right relative to the feeding mechanism, the active rack can push the vibrating tooth portion to make the grinder vibrate up and down, so that the grinding plate grinds the left and right end faces of the V-shaped spring piece.

[0012] The above technical solution is adopted to ensure the flatness and verticality of the left and right end faces of the V-shaped spring piece, and provide an accurate reference surface for the subsequent grinding of the inner and outer sides of the V-shaped spring piece, thereby improving the processing accuracy of the entire spring piece. It also enables the metal spring piece grinding device to comprehensively grind the V-shaped spring piece, ensuring that the inner side, outer side and left and right end faces of the V-shaped spring piece can achieve high standards of flatness and smoothness, minimize burrs and unevenness, and improve the overall quality of the product.

[0013] Furthermore, the fixed mold is provided with a groove corresponding to the spacing groove of the air suction member at the upper and lower sides at the pretreatment station, and the polishing plate can extend into the groove.

[0014] Furthermore, the lifting bracket is provided with a limiting plate located between the fixed mold and the polishing mold, and the outer shell is provided with a protruding block that can be blocked by the limiting plate.

[0015] By adopting the above technical solution, the limit plate is used to limit the movement of the feeding mechanism toward the grinding mold, so that the upper grinding mold can move left and right relative to the feeding mechanism, so that the active rack can push the vibrating tooth part to make the grinder vibrate up and down.

[0016] Furthermore, the plurality of V-shaped spring sheets form a spring sheet group, the length of the lower grinding mold exceeds the length of the upper grinding mold, and the exceeding portion is adapted to the length of a spring sheet group, and the frame has a sliding groove extending left and right for installing the lower grinding mold, the length of the sliding groove exceeds the length of the lower grinding mold, and the exceeding portion is adapted to the length of a spring sheet group.

[0017] Furthermore, the separator of the grinding assembly also includes a mounting plate for mounting a plurality of partition plates, a driving plate arranged at the output end of the partition driving member, and a first spring connected between the mounting plate and the driving plate.

[0018] By adopting the above technical solution, the first spring is used to apply elastic force to the mounting plate, so that the mounting plate drives the partition plate away from the driving plate, thereby allowing the partition plate to separate the V-shaped spring plate. When the partition plate contacts the V-shaped spring plate, the elastic deformation of the first spring can absorb part of the impact force, thereby avoiding damage to the V-shaped spring plate and the partition plate caused by hard separation.

[0019] Furthermore, an elastic centering plate is provided on the lower polishing mold, and the two elastic centering plates are symmetrically distributed front and back at the lower end of the V-shaped polishing surface to abut against the front and rear end surfaces of the V-shaped spring piece.

[0020] By adopting the above technical solution, the two elastic centering plates can apply slight pressure to the V-shaped spring piece in the front-to-back direction, so that the V-shaped spring piece is automatically centered on the polishing mold below, ensuring that the V-shaped spring piece is accurately aligned with the V-shaped polishing surface of the polishing mold, reducing placement errors, ensuring that the position of each V-shaped spring piece on the polishing mold is consistent, improving polishing accuracy, and can also be adjusted according to V-shaped spring pieces of different sizes to adapt to workpieces of various specifications.

[0021] The beneficial effect of a metal spring grinding device provided by the present invention is that two groups of grinding components facing each other are arranged on the frame, and the two groups of grinding components facing each other can cooperate with each other to position and support the V-shaped spring, and grind the inner and outer sides of the V-shaped spring. During the grinding process, one of the grinding molds is relatively still to adapt to the shape of the V-shaped spring, and provide stable support for it during the grinding process to prevent the V-shaped spring from being deformed due to the grinding force, so that the V-shaped spring always maintains its original V-shaped structure, thereby more accurately controlling the grinding position and strength, and ensuring the consistency of the grinding quality; the other grinding mold moves relatively to adapt to the shape of the V-shaped spring to cover the entire inner or outer side of the V-shaped spring for grinding, thereby applying the grinding pressure more evenly, ensuring that the inner or outer side of the V-shaped spring is evenly polished, avoiding the problem of local over-grinding or under-grinding, and having a better grinding effect. Among them, the setting of the dividing groove and the divider can not only cooperate with the grinding mold to drive the V-shaped spring piece to move back and forth to realize the grinding action, but also enable the grinding mold to position, support and grind multiple V-shaped spring pieces at the same time, thereby improving the grinding efficiency, grinding consistency and grinding accuracy, and can be suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the metal shrapnel grinding device of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the metal shrapnel grinding device of the present invention from another viewing angle.

[0024] Figure 3 It is a structural schematic diagram of a grinding assembly of a metal shrapnel grinding device of the present invention.

[0025] Figure 4 It is a schematic structural diagram of the grinding assembly of the metal shrapnel grinding device of the present invention from another viewing angle.

[0026] Figure 5 It is a structural schematic diagram of a grinding mold of a metal shrapnel grinding device of the present invention.

[0027] Figure 6 It is a structural schematic diagram of a feeding mechanism of a metal shrapnel grinding device of the present invention.

[0028] Figure 7 It is a schematic structural diagram of the feeding mechanism of the metal shrapnel grinding device of the present invention from another viewing angle.

[0029] Figure 8 It is a schematic structural diagram of a housing and an air suction member of a metal shrapnel grinding device of the present invention.

[0030] Fig. 9 It is a schematic structural diagram of the V-shaped spring piece of the present invention.

[0031] Fig.10 It is a schematic structural diagram of the V-shaped spring piece of the present invention from another viewing angle.

[0032] Reference numerals: 10, frame; 110, sliding groove; 20, grinding assembly; 210, grinding mold; 220, grinding drive; 230, partition drive; 240, elastic centering plate; 30, lifting bracket; 310, lifting drive; 320, return spring; 340, sliding rod; 40, fixed mold; 410, loading station; 411, protrusion; 420, pre-treatment station; 421, groove; 50, Feeding mechanism; 510, housing; 511, extension block; 520, air suction piece; 521, spacing groove; 530, ventilation pipe; 540, grinder; 541, grinding plate; 60, separator; 610, separator plate; 621, vibration tooth portion; 622, vibration spring; 631, mounting plate; 632, driving plate; 633, first spring; 70, separation groove; 80, active rack; 90, V-shaped spring. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 10 As shown, and refer to Figure 1 As shown in the figure, an embodiment of the metal spring sheet grinding device of the present invention is used to grind a V-shaped spring sheet 90, including a frame 10, a grinding assembly 20, a lifting bracket 30, a lifting drive member 310, a return spring 320, a fixed mold 40, a feeding mechanism 50 and an active rack 80.

[0035] like Figures 1 to 3 As shown, there are two groups of grinding assemblies 20, and the two groups of grinding assemblies 20 are arranged on the frame 10 in an upper and lower relative manner. Each grinding assembly 20 includes a grinding mold 210, a grinding driving member 220 driving the grinding mold 210 to move left and right, a separator 60 arranged in the grinding mold 210, a separation driving member 230 driving the separator 60 to move up and down, and an elastic centering plate 240. Among them, the grinding driving member 220 and the separation driving member 230 are hydraulic cylinders respectively.

[0036] like Figures 3 to 5As shown, the upper surface of the lower grinding mold 210 forms a convex V-shaped grinding surface for placing the V-shaped spring piece 90 and grinding the inner side surface of the V-shaped spring piece 90. The lower surface of the upper grinding mold 210 forms a concave V-shaped grinding surface for abutting the outer side surface of the V-shaped spring piece 90 and grinding the outer side surface of the V-shaped spring piece 90. In this way, the two upper and lower opposite grinding molds 210 can cooperate with each other to position and support the V-shaped spring piece 90 and grind the inner and outer side surfaces of the V-shaped spring piece 90. Specifically, during the grinding process, one of the grinding molds 210 is relatively stationary to adapt to the shape of the V-shaped spring piece 90 and provide stable support for it during the grinding process to prevent the V-shaped spring piece 90 from being deformed due to the grinding force, so that the V-shaped spring piece 90 always maintains its original V-shaped structure, thereby more accurately controlling the grinding position and force to ensure the consistency of the grinding quality; the other grinding mold 210 moves relatively to adapt to the shape of the V-shaped spring piece 90 to cover the entire inner side or outer side of the V-shaped spring piece 90 for grinding, thereby applying the grinding pressure more evenly, ensuring that the inner side or outer side of the V-shaped spring piece 90 is evenly polished, avoiding the problem of local over-polishing or under-polishing, and achieving a better grinding effect.

[0037] Each grinding mold 210 is provided with a plurality of partition grooves 70 arranged on the left and right to divide the V-shaped grinding surface into a plurality of spring clip accommodating positions corresponding to the V-shaped spring clips 90, so that the grinding mold 210 can simultaneously position, support and grind a plurality of V-shaped spring clips 90, thereby improving the grinding efficiency and being suitable for mass production.

[0038] Each separator 60 includes a plurality of separator plates 610 corresponding to the separation grooves 70, a mounting plate 631 for mounting the plurality of separator plates 610, a driving plate 632 arranged at the output end of the separation driving member 230, and a first spring 633 connected between the mounting plate 631 and the driving plate 632. When the separation driving member 230 drives the separator 60 to approach the V-shaped spring sheet 90, the separator plate 610 can extend from the separation groove 70 to the left and right sides of the V-shaped spring sheet 90, so that the V-shaped spring sheet 90 can move left and right with one of the grinding molds 210, so that the other grinding mold 210 grinds the V-shaped spring sheet 90. It should be noted that the extension length of the separator plate 610 should ensure that it can completely cover the left and right sides of the V-shaped spring sheet 90, thereby providing stable support for the V-shaped spring sheet 90, and at the same time ensure that there is a certain gap between the end face of the separator plate 610 and the grinding mold 210, so as to avoid the separator plate 610 interfering with the grinding mold 210 and hindering the normal operation of the grinding mold 210. The setting of the partition plate 610 can ensure high-precision positioning of a single V-shaped spring piece 90 in the left-right direction, and push the V-shaped spring piece 90 to move left-right, thereby improving the consistency and accuracy of grinding. The first spring 633 is used to apply elastic force to the mounting plate 631, so that the mounting plate 631 drives the partition plate 610 away from the driving plate 632, so that the partition plate 610 separates the V-shaped spring piece 90. When the partition plate 610 contacts the V-shaped spring piece 90, the elastic deformation of the first spring 633 can absorb part of the impact force, thereby avoiding damage to the V-shaped spring piece 90 and the partition plate 610 caused by hard separation.

[0039] like Figure 3 As shown, the elastic centering plate 240 is arranged on the lower polishing mold 210, and the two elastic centering plates 240 are symmetrically distributed at the lower end of the V-shaped polishing surface, and are used to abut the front and rear end surfaces of the V-shaped spring piece 90. Each elastic centering plate 240 includes a locking plate movably assembled on the lower polishing mold 210, and a locking spring connected between the locking plate and the lower polishing mold 210. The locking spring is used to apply elastic force to the locking plate, so that the two locking plates can apply slight pressure to the V-shaped spring piece 90 in the front and rear directions, so that the V-shaped spring piece 90 is automatically centered on the lower polishing mold 210, ensuring that the V-shaped spring piece 90 is accurately aligned with the V-shaped polishing surface of the polishing mold 210, reducing placement errors, ensuring that the position of each V-shaped spring piece 90 on the polishing mold 210 is consistent, improving polishing accuracy, and can also be adjusted according to V-shaped spring pieces 90 of different sizes to adapt to workpieces of various specifications.

[0040] like Figure 1 and Figure 2As shown, in this embodiment, five V-shaped springs 90 form a spring group, the length of the lower grinding mold 210 exceeds the length of the upper grinding mold 210, and the excess portion is adapted to the length of a spring group. The frame 10 has a sliding groove 110 extending left and right for mounting the lower grinding mold 210, the length of the sliding groove 110 exceeds the length of the lower grinding mold 210, and the excess portion is adapted to the length of a spring group. In other embodiments, the V-shaped springs 90 in the spring group can also be set to four or six or the like, which can be determined according to the scale of the production batch and the size of the mold, but is not limited thereto.

[0041] Before grinding, the leftmost ends of the upper grinding mold 210, the lower grinding mold 210 and the sliding groove 110 are aligned vertically.

[0042] During grinding, the inner side of the V-shaped spring sheet 90 is ground first. First, the upper partition driving member 230 drives the upper divider 60 to move downward close to the V-shaped spring sheet 90, so that the upper partition plate 610 extends from the partition groove 70 to the left and right sides of the V-shaped spring sheet 90. Then, the upper grinding driving member 220 drives the upper grinding mold 210 to move left and right on the lower grinding mold 210, and the two spring sheet groups under the upper grinding mold 210 move left and right with the upper grinding mold 210, so that the V-shaped grinding surface of the lower grinding mold 210 is ground against the inner side of the two spring sheet groups. Finally, after the inner side of the two spring sheet groups is ground, the upper grinding mold 210 drives the two spring sheet groups to move to the right alignment with the lower grinding mold 210, and the upper partition driving member 230 drives the upper divider 60 to move up and reset.

[0043] At this time, the outer side surface of the V-shaped spring piece 90 is polished again. First, the lower partition driving member 230 drives the lower divider 60 to move up and close to the V-shaped spring piece 90, so that the lower partition plate 610 extends from the partition groove 70 to the left and right sides of the V-shaped spring piece 90. Then, the lower polishing driving member 220 drives the lower polishing mold 210 to move left and right in the sliding groove 110, and the two spring pieces on the lower polishing mold 210 move left and right with the lower polishing mold 210, so that the V-shaped polishing surface of the upper polishing mold 210 is polished on the outer side surfaces of the two spring pieces. Finally, after the polishing of the outer side surfaces of the two spring pieces is completed, the lower polishing mold 210 moves to be aligned with the left side of the sliding groove 110, and the lower partition driving member 230 drives the lower divider 60 to move down and reset.

[0044] It should be noted that when the upper grinding mold 210 moves to the right for the first time, it pushes the rightmost spring piece group on the lower grinding mold 210 to the right. This group of spring pieces has completed grinding in the previous grinding process. At the beginning of this grinding process, it is pushed toward the sliding groove 110 by the upper grinding mold 210 and falls downward through the sliding groove 110 to discharge the material.

[0045] like Figure 1 , Figure 2 and Figure 6 As shown, the fixed mold 40 is fixedly mounted on the frame 10 by bolts and is located on the left side of the polishing mold 210 below. The upper surface of the fixed mold 40 forms a convex V-shaped placement surface for placing the V-shaped spring piece 90. The side of the V-shaped placement surface close to the polishing mold 210 forms a pre-treatment station 420, and the side of the V-shaped placement surface away from the polishing mold 210 forms a loading station 410. The fixed mold 40 is provided with a plurality of protrusions 411 arranged left and right at the loading station 410 to separate the loading station 410 into a plurality of spring piece accommodating positions corresponding to the V-shaped spring piece 90, so as to facilitate the positioning of the V-shaped spring piece 90 when placing the V-shaped spring piece 90 manually or by a robot at the loading station 410. The fixed mold 40 is provided with a plurality of grooves 421 arranged left and right at the pre-treatment station 420 to separate the pre-treatment station 420 into a plurality of spring piece accommodating positions corresponding to the V-shaped spring piece 90.

[0046] The lifting bracket 30 is assembled on the frame 10 so as to move up and down. The lifting drive 310 is a hydraulic cylinder and is fixedly mounted on the frame 10. The output end of the lifting drive 310 is connected to the lifting bracket 30 to drive the lifting bracket 30 to move up and down. The upper grinding assembly 20 is mounted on the lifting bracket 30, wherein the upper grinding mold 210 is mounted on the lifting bracket 30 so as to move left and right through the sliding rod 340 extending left and right so as to move up and down with the lifting bracket 30. The feeding mechanism 50 is assembled on the sliding rod 340 so as to move left and right, and is connected to the upper grinding mold 210 through the reset spring 320. The feeding mechanism 50 is distributed in the air above the fixed mold 40, and is used to transfer the V-shaped spring 90 placed on the feeding station 410 to the pre-treatment station 420.

[0047] like Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, the feeding mechanism 50 includes a shell 510, an air suction member 520 disposed in the shell 510, a vent pipe 530 connected to the air suction member 520, a grinder 540 disposed in the shell 510, and a vibration spring 622 disposed in the shell 510. A limit plate located between the fixed mold 40 and the grinding mold 210 is disposed on the lifting bracket 30, and a protruding block 511 that can be blocked by the limit plate is disposed on the shell 510. The lower surface of the air suction member 520 forms a concave V-shaped adsorption surface for abutting against the outer side surface of the V-shaped spring 90 and adsorbing the outer side surface of the V-shaped spring 90. The air suction member 520 has a plurality of spacing grooves 521 arranged left and right to separate the V-shaped adsorption surface into a plurality of spring accommodating positions corresponding to the V-shaped spring 90.

[0048] The sander 540 includes a sanding plate 541 and a vibrating tooth portion 621. The sanding plate 541 corresponds to the spacing groove 521 of the air suction member 520, and can extend downward from the spacing groove 521 to the left and right sides of the V-shaped spring 90. The vibrating spring 622 is connected between the sander 540 and the housing 510. The vibrating tooth portion 621 passes through the housing 510 upward, and the upper sanding mold 210 is provided with an active rack 80 extending left and right, which is used to push the vibrating tooth portion 621 to make the sander 540 vibrate up and down.

[0049] In this embodiment, the loading station 410 and the pretreatment station 420 can each accommodate one spring fragment group, the upper grinding mold 210 can accommodate two spring fragment groups, and the lower grinding mold 210 can accommodate three spring fragment groups. In addition, since an appropriate transition distance is required between the spring fragment accommodating position at the right end of the pretreatment station 420 and the spring fragment accommodating position at the left end of the lower grinding mold 210 to accommodate the right side wall of the shell 510 and the left side wall of the grinding mold 210 to avoid interference or collision, the metal spring fragment grinding device of this embodiment sets the transition distance to the width of a standard spring fragment accommodating position, and adds an empty accommodating position in each spring fragment group accommodated by the upper grinding mold 210 and the lower grinding mold 210, corresponding to the width of a standard spring fragment accommodating position, to adapt to the transition distance. Accordingly, a standard spring fragment accommodating position width is left between the loading station 410 and the pretreatment station 420.

[0050] After the polishing process is completed, the lower polishing mold 210 is aligned to the left of the sliding groove 110, and the upper polishing mold 210 is aligned to the right of the lower polishing mold 210. The two spring clip groups that have completed polishing in this polishing process are located below the upper polishing mold 210. At this time, the next batch of V-shaped spring clips 90 need to be loaded.

[0051] First, the upper partition driving member 230 drives the upper divider 60 to move downward and close to the V-shaped spring sheet 90, so that the upper partition plate 610 extends from the partition groove 70 to the left and right sides of the V-shaped spring sheet 90 of the two spring sheet groups that complete this grinding process, and the upper grinding driving member 220 drives the upper grinding mold 210 to move to the left until the upper grinding mold 210 drives the two spring sheet groups to move to the left alignment with the lower grinding mold 210; the staff manually or controls the robot to place the V-shaped spring sheet 90 at the loading station 410, the lifting driving member 310 drives the lifting bracket 30 to drive the upper grinding mold 210 and the feeding mechanism 50 to move upward, and the upper grinding driving member 220 drives the upper grinding mold 210 to push the feeding mechanism 50 to move to the left until the feeding mechanism 50 is located above the feeding station 410, and the upper grinding mold 210 is aligned to the left with the pretreatment station 420.

[0052] Then, the lifting drive 310 drives the lifting bracket 30 to move the upper grinding mold 210 and the feeding mechanism 50 downward until the V-shaped adsorption surface of the air suction component 520 contacts the spring group of the feeding station 410, and the V-shaped grinding surface of the upper grinding mold 210 contacts the pretreatment station 420 and the left spring group that completes this grinding process.

[0053] At this time, the air pump is controlled to draw air to the air suction member 520 through the ventilation pipe 530, so that the V-shaped adsorption surface adsorbs the V-shaped spring piece 90 of the loading station 410, and the lifting drive member 310 drives the lifting bracket 30 to drive the upper grinding mold 210 and the loading mechanism 50 adsorbed with the V-shaped spring piece 90 to move upward. At the same time, the upper partition drive member 230 drives the upper divider 60 to move downward, so that the upper partition plate 610 extends downward from the partition groove 70 to the pre-treatment station 420 and the left and right sides of the V-shaped spring piece 90 of the left spring piece group that completes this grinding process.

[0054] Next, the upper grinding drive 220 drives the upper grinding mold 210 to drive the loading mechanism 50 to move to the right, until the upper grinding mold 210 drives the shrapnel group of the pretreatment station 420 and the left shrapnel group that completes the current grinding process to the left side of the lower grinding mold 210, and pushes the right shrapnel group that completes the current grinding process to the right to the right side of the lower grinding mold 210, and the loading mechanism 50 transfers the shrapnel group of the loading station 410 to the pretreatment station 420.

[0055] In this way, the loading of this batch of V-shaped spring pieces 90 is completed. After the grinding process starts, the upper grinding drive 220 drives the upper grinding mold 210 to move left and right on the lower grinding mold 210. Since the limit plate on the lifting bracket 30 restricts the feeding mechanism 50 from continuing to move to the right, the upper grinding mold 210 will move left and right relative to the feeding mechanism 50. At this time, the active rack 80 on the upper grinding mold 210 can push the vibrating tooth portion 621 to make the grinder 540 vibrate up and down, and the grinding plate 541 can extend downward into the groove 421, so that the grinding plate 541 grinds the left and right end faces of the V-shaped spring piece 90 on the pretreatment station 420, ensuring the flatness and verticality of the left and right end faces of the V-shaped spring piece 90, and providing an accurate reference surface for the subsequent grinding of the inner and outer sides of the V-shaped spring piece 90, thereby improving the processing accuracy of the entire spring piece, and also enabling the metal spring piece grinding device of this embodiment to comprehensively grind the V-shaped spring piece 90, ensuring that the inner side, outer side and left and right end faces of the V-shaped spring piece 90 can achieve high standards of flatness and smoothness, minimize burrs and unevenness, and improve the overall quality of the product.

[0056] In other embodiments, the grinding driving member 220 , the partitioning driving member 230 and the lifting driving member 310 may also be cylinders or electric push rods.

[0057] During operation, the metal spring sheet grinding device provided by the present invention divides the V-shaped spring sheets 90 into several spring sheet groups for processing. When placing materials, one spring sheet group is placed at the loading station 410 each time. When loading materials, the loading mechanism 50 transfers one spring sheet group of the loading station 410 to the pretreatment station 420 for pretreatment each time, so as to grind the left and right end faces of the V-shaped spring sheets 90 first. During grinding, the upper grinding component 20 transfers one spring sheet group of the pretreatment station 420 to the grinding station each time. The two upper and lower opposite grinding components 20 grind the spring sheet groups of this batch and the spring sheet groups of the previous batch at the same time in each grinding process, so that the V-shaped spring sheets 90 in each batch are unloaded after two grinding processes, realizing assembly line operation, enhancing the automation capability and adaptability of the production line, and improving production efficiency and product quality.

[0058] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A metal shrapnel grinding device for grinding V-shaped shrapnel, comprising a frame, characterized in that: The frame is provided with two groups of grinding assemblies facing each other up and down, each of the grinding assemblies comprises a grinding mold, a grinding driving member driving the grinding mold to move left and right, a separator arranged in the grinding mold, and a separator driving member driving the separator to move up and down; The upper surface of the lower grinding mold forms a convex V-shaped grinding surface for placing the V-shaped spring piece and grinding the inner side of the V-shaped spring piece, and the lower surface of the upper grinding mold forms a concave V-shaped grinding surface for abutting against the outer side of the V-shaped spring piece and grinding the outer side of the V-shaped spring piece; Each of the grinding molds is provided with a plurality of partition grooves arranged left and right to divide the V-shaped grinding surface into a plurality of spring sheet accommodating positions corresponding to the V-shaped spring sheets. Each of the separators includes a plurality of partition plates corresponding to the partition grooves. When the partition driving member drives the separator to approach the V-shaped spring sheet, the partition plate can extend from the partition groove to the left and right sides of the V-shaped spring sheet, so that the V-shaped spring sheet can move left and right with one of the grinding molds, thereby enabling the other grinding mold to grind the V-shaped spring sheet.

2. A metal shrapnel grinding device according to claim 1, characterized in that: The frame is also provided with a lifting bracket, a lifting driving member for driving the lifting bracket to move up and down, and a fixed mold opposite to the polishing mold below. The upper surface of the fixed mold forms an outwardly convex V-shaped placement surface for placing V-shaped spring pieces. The side of the V-shaped placement surface close to the polishing mold forms a pretreatment station, and the side of the V-shaped placement surface away from the polishing mold forms a loading station. The lifting bracket is equipped with a loading mechanism that is distributed in the air above the fixed mold and can move left and right. The upper polishing assembly is installed on the lifting bracket and is connected to the loading mechanism through a reset spring.

3. A metal shrapnel grinding device according to claim 2, characterized in that: The feeding mechanism includes a shell, an air suction member arranged in the shell, and a ventilation pipe connected to the air suction member. The lower surface of the air suction member forms a concave V-shaped adsorption surface for abutting against the outer side surface of the V-shaped spring piece and adsorbing the outer side surface of the V-shaped spring piece.

4. A metal shrapnel grinding device according to claim 3, characterized in that: The feeding mechanism also includes a grinder arranged in the shell, the air suction member has a plurality of spacing grooves arranged left and right to divide the V-shaped adsorption surface into a plurality of spring sheet accommodating positions corresponding to the V-shaped spring sheets, and the grinder includes a plurality of grinding plates corresponding to the spacing grooves of the air suction member, and the grinding plates can extend downward from the spacing grooves to the left and right sides of the V-shaped spring sheet to grind the left and right end faces of the V-shaped spring sheet.

5. A metal shrapnel grinding device according to claim 4, characterized in that: The grinding mold above is provided with an active rack extending left and right, and the grinder also includes a vibrating tooth portion that can cooperate with the active rack. A vibration spring is provided between the grinder and the outer shell. When the grinding mold above moves left and right relative to the feeding mechanism, the active rack can push the vibrating tooth portion to make the grinder vibrate up and down, so that the grinding plate grinds the left and right end faces of the V-shaped spring piece.

6. A metal shrapnel grinding device according to claim 5, characterized in that: The fixed mold is provided with a groove corresponding to the spacing groove of the air suction piece at the upper and lower sides at the pretreatment station, and the polishing plate can extend into the groove.

7. A metal shrapnel grinding device according to claim 5, characterized in that: The lifting bracket is provided with a limiting plate located between the fixed mold and the polishing mold, and the shell is provided with a protruding block that can be blocked by the limiting plate.

8. The metal shrapnel grinding device according to claim 1, characterized in that: A plurality of V-shaped spring sheets form a spring sheet group, the length of the lower grinding mold exceeds the length of the upper grinding mold, and the exceeding portion is adapted to the length of a spring sheet group, and the frame has a sliding groove extending left and right for installing the lower grinding mold, the length of the sliding groove exceeds the length of the lower grinding mold, and the exceeding portion is adapted to the length of a spring sheet group.

9. The metal shrapnel grinding device according to claim 1, characterized in that: The separator of the grinding assembly also includes a mounting plate for mounting a plurality of partition plates, a driving plate arranged at the output end of the partition driving member, and a first spring connected between the mounting plate and the driving plate.

10. The metal shrapnel grinding device according to claim 1, characterized in that: An elastic centering plate is arranged on the lower polishing mold, and two elastic centering plates are symmetrically distributed front and back at the lower end of the V-shaped polishing surface to abut against the front and rear end surfaces of the V-shaped spring piece.

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