A metal shrapnel grinding device

Abstract

The present invention relates to the technical field of grinding devices, and specifically discloses a metal shrapnel grinding device, which includes a frame. There are two sets of grinding components arranged up and down on the frame. Each grinding component includes a grinding die, a grinding driving member for driving the grinding die to move left and right, a separator arranged in the grinding die, and a separator driving member for driving the separator to move up and down; the upper surface of the lower grinding die forms a convex V-shaped grinding surface, and the lower surface of the upper grinding die forms a concave V-shaped grinding surface; each grinding die is provided with a plurality of separation grooves arranged left and right. Each separator includes a plurality of separation plates corresponding to the separation grooves. When the separator driving member drives the separator close to the V-shaped shrapnel, the separation plates can extend from the separation grooves to the left and right sides of the V-shaped shrapnel, so that the V-shaped shrapnel can move left and right with one of the grinding dies. The grinding effect of the metal shrapnel grinding device on the V-shaped shrapnel is better.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding devices, and particularly relates to a metal shrapnel grinding device. Background Art

[0002] A metal shrapnel, also known as a dome sheet, is a thin metal component made of stainless steel material, and is mainly applied to products such as membrane switches, touch switches, PCB boards, FPC boards, medical devices, etc. The shapes of metal shrapnels are diverse, usually designed according to their application and functional requirements. Common shrapnel shapes include rectangular shrapnels, circular shrapnels, U-shaped shrapnels, V-shaped shrapnels, etc. Among them, the V-shaped shrapnel has high elasticity and durability, is suitable for applications that need to be used frequently and require long-term performance maintenance, and can also provide angular support and positioning, and is suitable for occasions that require specific angle fixation. After the V-shaped shrapnel is stamped and formed, burrs may be generated on the surface of the shrapnel, and these burrs need to be removed by grinding to ensure the flatness and smoothness of the shrapnel surface.

[0003] In the existing metal shrapnel grinding devices, such as a shrapnel grinding device disclosed in a Chinese patent document with the authorization announcement number of CN220197250U, the shrapnel grinding device adsorbs and fixes the shrapnel on the air suction cup by means of gas suction by a negative pressure air pump at the telescopic end of the telescopic mechanism, realizing the fixation of the shrapnel, and solving the problem that the shrapnel is not easy 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 member through the telescopic mechanism, and during the grinding process of the shrapnel, ensures that the grinding force is consistent to further ensure the uniformity of the shrapnel grinding.

[0004] However, during the grinding process of the above-mentioned shrapnel grinding device in the prior art on the V-shaped shrapnel, due to the special shape of the V-shaped shrapnel, when using the air suction component to fix the V-shaped shrapnel on the grinding plate member for grinding, the grinding plate member cannot effectively contact the inner side surface of the V-shaped shrapnel, and due to the compression and rebound performance of the V-shaped shrapnel, that is, it will undergo elastic deformation when subjected to an external force, it is easy to cause the grinding force to be difficult to control, and may cause over-grinding in some areas and under-grinding in other areas, resulting in a poor grinding effect on the V-shaped shrapnel. Summary of the Invention

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

[0006] The metal shrapnel grinding device provided by the present invention adopts the following technical solutions:

[0007] A metal shrapnel grinding device for grinding V-shaped shrapnel, comprising a frame. Two sets of grinding components are arranged up and down on the frame. Each grinding component includes a grinding die, a grinding driving part for driving the grinding die to move left and right, a separator arranged in the grinding die, and a separator driving part for driving the separator to move up and down. The upper surface of the lower grinding die forms a convex V-shaped grinding surface for placing the V-shaped shrapnel and grinding the inner side surface of the V-shaped shrapnel. The lower surface of the upper grinding die forms a concave V-shaped grinding surface for abutting against the outer side surface of the V-shaped shrapnel and grinding the outer side surface of the V-shaped shrapnel. Each grinding die is provided with a plurality of partition grooves arranged left and right to divide the V-shaped grinding surface into a plurality of shrapnel receiving positions corresponding to the V-shaped shrapnel. Each separator includes a plurality of partition plates corresponding to the partition grooves. When the separator driving part drives the separator to approach the V-shaped shrapnel, the partition plates can extend from the partition grooves to the left and right sides of the V-shaped shrapnel, so that the V-shaped shrapnel can move left and right with one of the grinding dies, thereby enabling the other grinding die to grind the V-shaped shrapnel.

[0008] With the above technical solution, two sets of grinding components are arranged up and down on the frame. The two sets of grinding components arranged up and down can cooperate with each other to position and support the V-shaped shrapnel, and grind the inner side surface and the outer side surface of the V-shaped shrapnel. During the grinding process, one of the grinding dies is relatively stationary to adapt to the shape of the V-shaped shrapnel and provide stable support during the grinding process to prevent the V-shaped shrapnel from deforming due to the grinding force, so that the V-shaped shrapnel always maintains its original V-shaped structure, thereby more precisely controlling the grinding position and force and ensuring the consistency of the grinding quality. The other grinding die moves relatively to adapt to the shape of the V-shaped shrapnel and cover the entire inner side surface or the outer side surface of the V-shaped shrapnel for grinding, so as to apply the grinding pressure more evenly, ensure that the inner side surface or the outer side surface of the V-shaped shrapnel is evenly ground, and avoid the problems of local over-grinding or under-grinding, and the grinding effect is better. Among them, the setting of the partition grooves and the separator not only enables the grinding die to drive the V-shaped shrapnel to reciprocate to realize the grinding action, but also enables the grinding die to position, support and grind multiple V-shaped shrapnels at the same time, improving the grinding efficiency, grinding consistency and grinding accuracy, and being applicable to mass production.

[0009] Furthermore, a lifting bracket, a lifting driving part for driving the lifting bracket to move up and down, and a fixed die opposite to the lower grinding die left and right are also arranged on the frame. The upper surface of the fixed die forms a convex V-shaped placing surface for placing the V-shaped shrapnel. A pretreatment station is formed on one side of the V-shaped placing surface close to the grinding die, and a loading station is formed on the side of the V-shaped placing surface far from the grinding die. A loading mechanism is assembled on the lifting bracket to move left and right and is spaced above the fixed die. The upper grinding component is installed on the lifting bracket and is connected to the loading mechanism through a return spring.

[0010] Further, the loading mechanism includes a housing, a pneumatic suction member disposed within the housing, and a ventilation pipe communicating with the pneumatic suction member. The lower surface of the pneumatic suction member forms a concave V-shaped adsorption surface for abutting against and adsorbing the outer side surfaces of the V-shaped elastic pieces.

[0011] Further, the loading mechanism further includes a grinding device disposed within the housing. The pneumatic suction member has a plurality of spaced grooves arranged left and right to divide the V-shaped adsorption surface into a plurality of elastic piece accommodation positions corresponding to the V-shaped elastic pieces. The grinding device includes a plurality of grinding plates corresponding to the spaced grooves of the pneumatic suction member. The grinding plates can extend downward from the spaced grooves to the left and right sides of the V-shaped elastic pieces to grind the left and right end faces of the V-shaped elastic pieces.

[0012] Further, a driving rack extending left and right is provided on the upper grinding die. The grinding device further includes a vibrating tooth portion capable of cooperating with the driving rack. A vibrating spring is provided between the grinding device and the housing. When the upper grinding die moves left and right relative to the loading mechanism, the driving rack can push the vibrating tooth portion to cause the grinding device to vibrate up and down, so that the grinding plates grind the left and right end faces of the V-shaped elastic pieces.

[0013] By adopting the above technical solution, the flatness and perpendicularity of the left and right end faces of the V-shaped elastic pieces are ensured, providing an accurate reference surface for subsequent grinding of the inner and outer side surfaces of the V-shaped elastic pieces, thereby improving the processing accuracy of the entire elastic piece. It also enables the metal elastic piece grinding device to comprehensively grind the V-shaped elastic pieces, ensuring that the inner side surface, outer side surface, and left and right end faces of the V-shaped elastic pieces can all reach high-standard flatness and smoothness, minimizing burrs and unevenness as much as possible, and improving the overall quality of the product.

[0014] Further, the fixed die is provided with grooves corresponding to the spaced grooves of the pneumatic suction member up and down at the pretreatment station, and the grinding plates can extend into the grooves.

[0015] Further, a limiting plate is provided on the lifting bracket between the fixed die and the grinding die, and a protruding block that can be blocked by the limiting plate is provided on the housing.

[0016] By adopting the above technical solution, the limiting plate is used to limit the movement of the loading mechanism towards the grinding die, so that the upper grinding die can move left and right relative to the loading mechanism to achieve the driving rack pushing the vibrating tooth portion to cause the grinding device to vibrate up and down.

[0017] Further, a plurality of the V-shaped elastic pieces form an elastic piece group. The length of the lower grinding die exceeds that of the upper grinding die, and the exceeding part is adapted to the length of an elastic piece group. The frame has a sliding groove extending left and right for mounting the lower grinding die, and the length of the sliding groove exceeds that of the lower grinding die, and the exceeding part is adapted to the length of an elastic piece group.

[0018] Further, the separator of the grinding assembly further includes a mounting plate for mounting a plurality of partition plates, a driving plate disposed at the output end of the partition driving member, and a first spring connected between the mounting plate and the driving plate.

[0019] With the above technical solution, the first spring is used to apply an elastic force to the mounting plate, so that the mounting plate drives the partition plate away from the driving plate, thereby separating the V-shaped elastic pieces by the partition plate. When the partition plate contacts the V-shaped elastic pieces, the elastic deformation of the first spring can absorb part of the impact force, avoiding damage to the V-shaped elastic pieces and the partition plate caused by hard separation.

[0020] Further, elastic centering plates are provided on the lower grinding die, and the two elastic centering plates are symmetrically distributed before and after at the lower end of the V-shaped grinding surface to abut against the front and rear end faces of the V-shaped elastic pieces.

[0021] With the above technical solution, the two elastic centering plates can apply a slight pressure to the V-shaped elastic pieces in the front and rear directions, so that the V-shaped elastic pieces are automatically centered on the lower grinding die, ensuring that the V-shaped elastic pieces are precisely aligned with the V-shaped grinding surface of the grinding die, reducing the placement error, ensuring that the positions of each V-shaped elastic piece on the grinding die are consistent, improving the grinding accuracy, and can also be adjusted according to V-shaped elastic pieces of different sizes to adapt to workpieces of various specifications.

[0022] The beneficial effects of a metal shrapnel grinding device provided by the present invention are as follows: Two sets of grinding components are arranged up and down relative to each other on the frame. The two sets of grinding components arranged up and down relative to each other can cooperate with each other to position and support the V-shaped shrapnel, and grind the inner side and the outer side of the V-shaped shrapnel. During the grinding process, one grinding die is relatively stationary to adapt to the shape of the V-shaped shrapnel and provide stable support for it during the grinding process, preventing the V-shaped shrapnel from deforming due to the grinding force, so that the V-shaped shrapnel always maintains its original V-shaped structure, thereby more precisely controlling the position and strength of grinding and ensuring the consistency of grinding quality; the other grinding die moves relatively to adapt to the shape of the V-shaped shrapnel and cover the entire inner side or the outer side of the V-shaped shrapnel for grinding, so as to apply the grinding pressure more evenly, ensure that the inner side or the outer side of the V-shaped shrapnel is evenly ground, avoid the problems of local over-grinding or under-grinding, and the grinding effect is better. Among them, the setting of the partition groove and the separator not only enables the grinding die to drive the V-shaped shrapnel to reciprocate to realize the grinding action, but also enables the grinding die to position, support and grind multiple V-shaped shrapnels at the same time, improving the grinding efficiency, grinding consistency and grinding accuracy, and being applicable to mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the metal shrapnel grinding device of the present invention.

[0024] Figure 2 is a schematic structural diagram of the metal shrapnel grinding device of the present invention from another perspective.

[0025] Figure 3 is a schematic structural diagram of the grinding component of the metal shrapnel grinding device of the present invention.

[0026] Figure 4 is a schematic structural diagram of the grinding component of the metal shrapnel grinding device of the present invention from another perspective.

[0027] Figure 5 is a schematic structural diagram of the grinding die of the metal shrapnel grinding device of the present invention.

[0028] Figure 6 is a schematic structural diagram of the feeding mechanism of the metal shrapnel grinding device of the present invention.

[0029] Figure 7 is a schematic structural diagram of the feeding mechanism of the metal shrapnel grinding device of the present invention from another perspective.

[0030] Figure 8 is a schematic structural diagram of the housing and the air suction member of the metal shrapnel grinding device of the present invention.

[0031] Figure 9 is a schematic structural diagram of the V-shaped shrapnel of the present invention.

[0032] Figure 10 It is a schematic structural view of the V-shaped elastic piece of the present invention from another perspective.

[0033] Reference numerals:

[0034] 10, frame; 110, sliding groove; 20, grinding assembly; 210, grinding die; 220, grinding driving member; 230, separating driving member; 240, elastic centering plate; 30, lifting bracket; 310, lifting driving member; 320, return spring; 340, sliding rod; 40, fixed die; 410, loading station; 411, protrusion; 420, pretreatment station; 421, groove; 50, loading mechanism; 510, housing; 511, protruding block; 520, air suction member; 521, spacer groove; 530, ventilation pipe; 540, grinder; 541, grinding plate; 60, separator; 610, separator plate; 621, vibrating tooth portion; 622, vibrating spring; 631, mounting plate; 632, driving plate; 633, first spring; 70, separation groove; 80, driving rack; 90, V-shaped elastic piece. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0036] As Figures 1 to 10 shown and with reference to Figure 1 the orientation shown in, an embodiment of the metal elastic piece grinding device of the present invention for grinding the V-shaped elastic piece 90 includes a frame 10, a grinding assembly 20, a lifting bracket 30, a lifting driving member 310, a return spring 320, a fixed die 40, a loading mechanism 50 and a driving rack 80.

[0037] As Figures 1 to 3 shown, the number of the grinding assemblies 20 is two groups, and the two groups of grinding assemblies 20 are arranged up and down opposite to each other on the frame 10. Each grinding assembly 20 includes a grinding die 210, a grinding driving member 220 for driving the grinding die 210 to move left and right, a separator 60 arranged in the grinding die 210, a separating driving member 230 for driving the separator 60 to move up and down, and an elastic centering plate 240. Among them, the grinding driving member 220 and the separating driving member 230 are respectively hydraulic cylinders.

[0038] As Figures 3 to 5As shown, the upper surface of the lower grinding die 210 forms a convex V-shaped grinding surface for placing the V-shaped elastic piece 90 and grinding the inner side surface of the V-shaped elastic piece 90. The lower surface of the upper grinding die 210 forms a concave V-shaped grinding surface for abutting against the outer side surface of the V-shaped elastic piece 90 and grinding the outer side surface of the V-shaped elastic piece 90. In this way, the two grinding dies 210 facing each other up and down can cooperate with each other to position and support the V-shaped elastic piece 90, and grind the inner side surface and the outer side surface of the V-shaped elastic piece 90. Specifically, during the grinding process, one of the grinding dies 210 is relatively stationary to adapt to the shape of the V-shaped elastic piece 90 and provide stable support for it during the grinding process, preventing the V-shaped elastic piece 90 from deforming due to the grinding force, so that the V-shaped elastic piece 90 always maintains its original V-shaped structure, thereby more precisely controlling the grinding position and force and ensuring the consistency of the grinding quality; the other grinding die 210 moves relatively to adapt to the shape of the V-shaped elastic piece 90 and cover the entire inner side surface or the outer side surface of the V-shaped elastic piece 90 for grinding, so as to apply the grinding pressure more evenly, ensure that the inner side surface or the outer side surface of the V-shaped elastic piece 90 is evenly ground, avoid the problems of local over-grinding or under-grinding, and the grinding effect is better.

[0039] Each grinding die 210 is provided with a plurality of partition grooves 70 arranged left and right to divide the V-shaped grinding surface into a plurality of elastic piece accommodating positions corresponding to the V-shaped elastic piece 90, so that the grinding die 210 can simultaneously position, support and grind a plurality of V-shaped elastic pieces 90, improving the grinding efficiency and being applicable to mass production.

[0040] 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 drive plate 632 provided at the output end of the separation drive member 230, and a first spring 633 connected between the mounting plate 631 and the drive plate 632. When the separation drive member 230 drives the separator 60 to approach the V-shaped elastic piece 90, the separator plates 610 can extend from the separation grooves 70 to the left and right sides of the V-shaped elastic piece 90, so that the V-shaped elastic piece 90 can move left and right with one of the grinding dies 210, so that the other grinding die 210 grinds the V-shaped elastic piece 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 elastic piece 90, so as to provide stable support for the V-shaped elastic piece 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 die 210 to avoid interference between the separator plate 610 and the grinding die 210 and hinder the normal operation of the grinding die 210. The setting of the separator plate 610 can ensure high-precision positioning of a single V-shaped elastic piece 90 in the left and right directions and push the V-shaped elastic piece 90 to move left and right, thereby improving the consistency and precision of grinding. The first spring 633 is used to apply an elastic force to the mounting plate 631, so that the mounting plate 631 drives the separator plate 610 away from the drive plate 632, so that the separator plate 610 separates the V-shaped elastic piece 90. When the separator plate 610 contacts the V-shaped elastic piece 90, the elastic deformation of the first spring 633 can absorb part of the impact force and avoid damage to the V-shaped elastic piece 90 and the separator plate 610 caused by hard separation.

[0041] As Figure 3 shown, the elastic centering plate 240 is arranged on the lower grinding die 210. The two elastic centering plates 240 are symmetrically distributed front and back at the lower end of the V-shaped grinding surface and are used to abut against the front and back end faces of the V-shaped elastic piece 90. Each elastic centering plate 240 includes a locking plate movably assembled on the lower grinding die 210 and a locking spring connected between the locking plate and the lower grinding die 210. The locking spring is used to apply an elastic force to the locking plate, so that the two locking plates can apply a slight pressure to the V-shaped elastic piece 90 in the front and back directions, so that the V-shaped elastic piece 90 is automatically centered on the lower grinding die 210, ensuring that the V-shaped elastic piece 90 is precisely aligned with the V-shaped grinding surface of the grinding die 210, reducing the placement error, ensuring that the positions of each V-shaped elastic piece 90 on the grinding die 210 are consistent, improving the grinding precision, and can also be adjusted according to V-shaped elastic pieces 90 of different sizes to adapt to workpieces of various specifications.

[0042] As Figure 1 and Figure 2As shown, in this embodiment, five V-shaped elastic pieces 90 form an elastic piece group. The length of the lower grinding die 210 exceeds that of the upper grinding die 210, and the exceeding part is adapted to the length of an elastic piece group. The frame 10 has a sliding groove 110 extending left and right for installing the lower grinding die 210. The length of the sliding groove 110 exceeds that of the lower grinding die 210, and the exceeding part is adapted to the length of an elastic piece group. In other embodiments, the number of V-shaped elastic pieces 90 in the elastic piece group can also be set to four, six, etc., which can be specifically determined according to the scale of the production batch and the size of the die, and is not limited thereto.

[0043] Before grinding, the leftmost ends of the upper grinding die 210, the lower grinding die 210 and the sliding groove 110 are aligned vertically.

[0044] During grinding, first, the inner side of the V-shaped elastic piece 90 is ground. First, the upper partition driving member 230 drives the upper partition 60 to move downward close to the V-shaped elastic piece 90, so that the upper partition plate 610 extends from the partition groove 70 to the left and right sides of the V-shaped elastic piece 90. Then, the upper grinding driving member 220 drives the upper grinding die 210 to move left and right on the lower grinding die 210. The two elastic piece groups under the upper grinding die 210 move left and right along with the upper grinding die 210, so that the V-shaped grinding surface of the lower grinding die 210 grinds the inner sides of the two elastic piece groups. Finally, after the inner sides of the two elastic piece groups are ground, the upper grinding die 210 drives the two elastic piece groups to move to be right-aligned with the lower grinding die 210, and the upper partition driving member 230 drives the upper partition 60 to move upward to reset.

[0045] At this time, then the outer side of the V-shaped elastic piece 90 is ground. First, the lower partition driving member 230 drives the lower partition 60 to move upward close to the V-shaped elastic 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 elastic piece 90. Then, the lower grinding driving member 220 drives the lower grinding die 210 to move left and right in the sliding groove 110. The two elastic piece groups on the lower grinding die 210 move left and right along with the lower grinding die 210, so that the V-shaped grinding surface of the upper grinding die 210 grinds the outer sides of the two elastic piece groups. Finally, after the outer sides of the two elastic piece groups are ground, the lower grinding die 210 moves to be left-aligned with the sliding groove 110, and the lower partition driving member 230 drives the lower partition 60 to move downward to reset.

[0046] It should be noted that when the upper grinding die 210 moves to the right for the first time, it pushes the rightmost elastic sheet group on the lower grinding die 210 to the right. This group of elastic sheet groups was ground in the previous grinding process and is pushed by the upper grinding die 210 towards the sliding groove 110 at the beginning of this grinding process, and then falls down through the sliding groove 110 for discharging.

[0047] As Figure 1 , Figure 2 and Figure 6 shown, the fixing die 40 is fixedly installed on the frame 10 by bolts and is located on the left side of the lower grinding die 210. The upper surface of the fixing die 40 forms an outwardly convex V-shaped placement surface for placing the V-shaped elastic sheet 90. A pretreatment station 420 is formed on the side of the V-shaped placement surface close to the grinding die 210, and a loading station 410 is formed on the side of the V-shaped placement surface far from the grinding die 210. The fixing die 40 is provided with a plurality of protrusions 411 arranged left and right at the loading station 410 to divide the loading station 410 into a plurality of elastic sheet accommodation positions corresponding to the V-shaped elastic sheet 90, facilitating the positioning of the V-shaped elastic sheet 90 when manually or by a manipulator placing the V-shaped elastic sheet 90 at the loading station 410. The fixing die 40 is provided with a plurality of grooves 421 arranged left and right at the pretreatment station 420 to divide the pretreatment station 420 into a plurality of elastic sheet accommodation positions corresponding to the V-shaped elastic sheet 90.

[0048] The lifting bracket 30 is assembled to move up and down on the frame 10. The lifting driving member 310 is a hydraulic cylinder and is fixedly installed on the frame 10. The output end of the lifting driving member 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 installed on the lifting bracket 30. Among them, the upper grinding die 210 is installed to move left and right on the lifting bracket 30 through a sliding rod 340 extending left and right, so as to move up and down with the lifting bracket 30. The loading mechanism 50 is assembled to move left and right on the sliding rod 340 and is connected to the upper grinding die 210 through a return spring 320. The loading mechanism 50 is spaced above the fixing die 40 and is used to transfer the V-shaped elastic sheet 90 placed at the loading station 410 to the pretreatment station 420.

[0049] As Figure 2 , Figure 6 , Figure 7 and Figure 8As shown, the loading mechanism 50 includes a housing 510, a pneumatic suction member 520 disposed within the housing 510, an air pipe 530 communicating with the pneumatic suction member 520, a grinder 540 disposed within the housing 510, and a vibration spring 622 disposed within the housing 510. A limiting plate is provided on the lifting bracket 30 between the fixed mold 40 and the grinding mold 210, and a protruding block 511 that can be blocked by the limiting plate is provided on the housing 510. The lower surface of the pneumatic suction member 520 forms a concave V-shaped adsorption surface for abutting against and adsorbing the outer side surface of the V-shaped elastic sheet 90. The pneumatic suction member 520 has a plurality of spaced grooves 521 arranged left and right to divide the V-shaped adsorption surface into a plurality of elastic sheet accommodation positions corresponding to the V-shaped elastic sheet 90.

[0050] The grinder 540 includes a grinding plate 541 and a vibrating tooth portion 621. The grinding plate 541 corresponds to the spaced grooves 521 of the pneumatic suction member 520 up and down and can extend downward from the spaced grooves 521 to the left and right sides of the V-shaped elastic sheet 90. The vibration spring 622 is connected between the grinder 540 and the housing 510. The vibrating tooth portion 621 penetrates upward through the housing 510, and a driving rack 80 extending left and right is provided on the upper grinding mold 210 above for pushing the vibrating tooth portion 621 to vibrate the grinder 540 up and down.

[0051] In this embodiment, the loading station 410 and the pretreatment station 420 can each accommodate a group of elastic sheets. The upper grinding mold 210 can accommodate two groups of elastic sheets, and the lower grinding mold 210 can accommodate three groups of elastic sheets. Moreover, since an appropriate transition distance is required between the elastic sheet accommodation position at the right end of the pretreatment station 420 and the elastic sheet accommodation position at the left end of the lower grinding mold 210 to accommodate the right side wall of the housing 510 and the left side wall of the grinding mold 210 and avoid interference or collision, the metal elastic sheet grinding device of this embodiment sets this transition distance to the width of a standard elastic sheet accommodation position, and adds a vacant accommodation position corresponding to the width of a standard elastic sheet accommodation position to each group of elastic sheets accommodated in the upper grinding mold 210 and the lower grinding mold 210 to adapt to this transition distance. Correspondingly, a width of a standard elastic sheet accommodation position is left between the loading station 410 and the pretreatment station 420.

[0052] After this grinding process is completed, the lower grinding mold 210 is aligned with the left side of the sliding groove 110, and the upper grinding mold 210 is aligned with the right side of the lower grinding mold 210. The two groups of elastic sheets that have been ground in this grinding process are located below the upper grinding mold 210. At this time, it is necessary to load the next batch of V-shaped elastic sheets 90.

[0053] First, the upper partition driving member 230 drives the upper partition 60 to move downward close to the V-shaped elastic piece 90, so that the upper partition plate 610 extends out of the partition groove 70 to the left and right sides of the V-shaped elastic pieces 90 of the two elastic piece groups that have completed this polishing process. The upper polishing driving member 220 drives the upper polishing die 210 to move leftward until the upper polishing die 210 drives the two elastic piece groups to move to be left-aligned with the lower polishing die 210. The staff manually or manipulates the manipulator to place the V-shaped elastic piece 90 at the loading station 410. The lifting driving member 310 drives the lifting bracket 30 to drive the upper polishing die 210 and the feeding mechanism 50 to move upward. The upper polishing driving member 220 drives the upper polishing die 210 to push the feeding mechanism 50 to move leftward until the feeding mechanism 50 is located above the loading station 410, and the upper polishing die 210 is left-aligned with the pretreatment station 420.

[0054] Then, the lifting driving member 310 drives the lifting bracket 30 to drive the upper polishing die 210 and the feeding mechanism 50 to move downward until the V-shaped adsorption surface of the air suction member 520 contacts the elastic piece group at the loading station 410, and the V-shaped polishing surface of the upper polishing die 210 contacts the elastic piece group at the pretreatment station 420 and the left elastic piece group that has completed this polishing process.

[0055] At this time, control the air pump to pump air to the air suction member 520 through the air pipe 530 to make the V-shaped adsorption surface adsorb the V-shaped elastic piece 90 at the loading station 410. The lifting driving member 310 drives the lifting bracket 30 to drive the upper polishing die 210 and the feeding mechanism 50 with the adsorbed V-shaped elastic piece 90 to move upward. At the same time, the upper partition driving member 230 drives the upper partition 60 to move downward, so that the upper partition plate 610 extends downward from the partition groove 70 to the left and right sides of the V-shaped elastic piece 90 of the elastic piece group at the pretreatment station 420 and the left elastic piece group that has completed this polishing process.

[0056] Next, the upper polishing driving member 220 drives the upper polishing die 210 to drive the feeding mechanism 50 to move rightward until the upper polishing die 210 drives the elastic piece group at the pretreatment station 420 and the left elastic piece group that has completed this polishing process to the left side of the lower polishing die 210, and pushes the right elastic piece group that has completed this polishing process to the right side of the lower polishing die 210, and the feeding mechanism 50 transfers the elastic piece group at the loading station 410 to the pretreatment station 420.

[0057] In this way, the feeding of the V-shaped shrapnel 90 in this batch is completed. After the start of this grinding process, the upper grinding driving member 220 drives the upper grinding die 210 to move left and right on the lower grinding die 210. Since the limiting plate on the lifting bracket 30 restricts the feeding mechanism 50 from moving further to the right, the upper grinding die 210 will move left and right relative to the feeding mechanism 50. At this time, the driving rack 80 on the upper grinding die 210 can push the vibrating tooth part 621 to make the grinder 540 vibrate up and down. Moreover, 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 shrapnel 90 on the pretreatment station 420, ensuring the flatness and perpendicularity of the left and right end faces of the V-shaped shrapnel 90, providing an accurate reference surface for subsequent grinding of the inner and outer sides of the V-shaped shrapnel 90, thereby improving the processing accuracy of the entire shrapnel, and also enabling the metal shrapnel grinding device of this embodiment to comprehensively grind the V-shaped shrapnel 90, ensuring that the inner side, outer side and left and right end faces of the V-shaped shrapnel 90 can all reach high-standard flatness and smoothness, minimizing burrs and unevenness as much as possible, and improving the overall quality of the product.

[0058] In other embodiments, the grinding driving member 220, the separating driving member 230 and the lifting driving member 310 can also be air cylinders or electric push rods.

[0059] During the working process of the metal shrapnel grinding device provided by the present invention, the V-shaped shrapnel 90 is divided into several shrapnel groups for processing. When placing the materials, one shrapnel group is placed at the feeding station 410 each time. When feeding, the feeding mechanism 50 transfers one shrapnel group at the feeding station 410 to the pretreatment station 420 for pretreatment each time to first grind the left and right end faces of the V-shaped shrapnel 90. When grinding, the upper grinding assembly 20 transfers one shrapnel group at the pretreatment station 420 to the grinding station each time. The two relatively upper and lower grinding assemblies 20 grind the shrapnel group in this batch and the shrapnel group in the previous batch simultaneously in each grinding process, so that the V-shaped shrapnel 90 in each batch is ground twice and then discharged, realizing a pipeline operation, enhancing the automation ability and adaptability of the production line, and improving the production efficiency and product quality.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to 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: Two groups of grinding assemblies facing each other are arranged on the frame, each of which includes 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 grinding mold 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 separator 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 plates can extend from the partition grooves 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. 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.

2. A metal shrapnel grinding device according to claim 1, 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.

3. A metal shrapnel grinding device according to claim 2, 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.

4. A metal shrapnel grinding device according to claim 3, 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.

5. A metal shrapnel grinding device according to claim 4, characterized in that: 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.

6. A metal shrapnel grinding device according to claim 4, 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.

7. A 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.

8. 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.

9. 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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