Punching tool for trundle support

Abstract

The utility model provides a caster support stamping tool which comprises an upper die plate, the upper die plate is provided with an upper die set, and the upper die set comprises an upper pressing column die, a top hole stamping die, a pressing and cutting column die and a stamping forming column die which are sequentially arranged in the conveying direction of a plate to be machined; the lower mold plate is provided with a lower mold group; the lower die set comprises a punching lower die, a hole ejecting lower die and a cutting lower die which are sequentially arranged in the conveying direction of a plate to be machined, a pushing mechanism is arranged at the bottom of the cutting lower die, a lower forming die is arranged at the tail end of the pushing mechanism, and the pushing mechanism is used for pushing the plate cut by the cutting lower die to the lower forming die. The upper dies of the upper die set are in one-to-one correspondence with the corresponding lower dies of the lower die set. The tool is simple in structure, the trundle support can be machined and formed at a time, operation is easy, and personnel participation is little.

Description

Technical Field

[0001] This disclosure relates to the field of caster processing technology, and in particular to a caster bracket stamping fixture. Background Technology

[0002] Casters are used in many fields in daily production and life, and they need corresponding caster brackets for fixation. Currently, the processing technology of caster brackets includes blanking, stamping, bending or folding, welding, etc., and each process is carried out separately. The processing technology of caster brackets is not continuous, requires manual assistance, cannot be processed in one go, and can only be processed one by one, not multiple at a time. The processing process is cumbersome and undoubtedly increases the cost of the parts themselves.

[0003] like Figure 1 As shown, the caster bracket to be stamped includes two spaced-apart sidewall brackets, each composed of triangular and L-shaped sidewalls. The right-angled side of the triangle is joined to the outer side of one L-shaped sidewall. Each of the two opposite L-shaped sides has a fixing hole at both ends for fixing to the caster. A fixing seat is connected across the other right-angled side and the other side of the L-shape of each bracket. The fixing seat protrudes outwards from the right-angled side of the triangle and has a top hole in the center for connecting to the caster mounting component. A rectangular or square mounting opening is located on the other side of the L-shaped sidewall, also for connecting to the caster mounting component. The mounting openings are larger than the fixing holes. The fixing holes, top hole, and mounting openings require drilling. The protrusion of the top hole needs to be stamped and shaped. The sheet metal needs to be cut, and the cut sheet metal is stamped into a three-dimensional shape. If traditional processing methods are used to process this caster bracket, multiple sheet metals need to be stamped, drilled, and then welded together, resulting in low processing efficiency. There is an urgent need for a convenient and efficient stamping fixture. Utility Model Content

[0004] The purpose of this disclosure is to provide a caster bracket stamping fixture, thereby solving the aforementioned problems existing in the prior art.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this disclosure are as follows:

[0006] This disclosure provides a caster bracket stamping fixture, the fixture including: an upper template, the upper template being provided with an upper mold assembly;

[0007] The upper mold assembly includes an upper pressure column mold, a top hole punching mold, a pressure cutting column mold and a stamping forming column mold arranged sequentially along the conveying direction of the plate to be processed;

[0008] Lower template, wherein the lower template is provided with a lower mold assembly;

[0009] The lower mold assembly includes a punching lower mold, a top hole lower mold, and a cutting lower mold arranged sequentially along the conveying direction of the plate to be processed. The bottom of the cutting lower mold is equipped with a pushing mechanism, and the end of the pushing mechanism is equipped with a lower forming mold. The pushing mechanism is used to push the plate material cut by the cutting lower mold to the lower forming mold.

[0010] Each upper mold of the upper mold group corresponds one-to-one with the corresponding lower mold of the lower mold group.

[0011] For example, the lower template includes a first pressure plate and a base plate;

[0012] There is an elastic gap between the first pressure plate and the base plate, and the first pressure plate is slidably connected to the base plate; the lower punching die and the lower top punch die are respectively inserted through the first pressure plate, one end of the lower punching die and the lower top punch die are respectively connected to the base plate, and the other end of the lower punching die and the lower top punch die are respectively disposed in the first pressure plate, with the other end of the lower top punch die being higher than the other end of the lower punching die; the first pressure plate can slide relative to the lower punching die and the lower top punch die; and the lower cutting die is disposed in the first pressure plate.

[0013] The upper template drives the upper mold assembly to move downwards, pressing the lower template. When the first pressure plate moves towards the bottom plate and fits against the bottom plate, the other end face of the punching lower mold is flush with the upper surface of the first pressure plate, and the other end of the top hole lower mold extends out of the first pressure plate. The lower forming mold (250) is disposed on one side of the lower template (200).

[0014] For example, the punching lower mold includes a punching column, one end of which is disposed on the base plate, and the other end of which passes through the first pressure plate; the upper surface of the other end of the punching column is provided with all the holes of the caster bracket to be processed, and the size and relative position of each hole are the same as the size and relative position of the corresponding hole in the unfolded plane of the caster bracket to be processed.

[0015] For example, the lower mold of the top hole includes a top hole forming column, the cross-section of which has the same shape and size as the fixed seat of the caster bracket to be processed located in the top hole, and the cross-sectional size of the top hole forming column is larger than the size of the top hole of the caster bracket to be processed.

[0016] For example, when there are multiple punching dies and top hole dies, the number of punching dies, top hole dies and cutting dies are the same. Each punching die is staggered in the width direction of the lower template, and each top hole die is staggered in the width direction of the lower template. The cutting dies are spaced at a preset distance in the length direction of the lower template and are staggered in the width direction.

[0017] The number and position of the molds on the upper template are the same as those on the lower template.

[0018] For example, the lower cutting die includes a cutting opening that matches the shape and size of the unfolded plane of the caster bracket to be processed, and the bottom plate has a through hole that matches the shape and size of the cutting opening. The cut plate material falls through the through hole to the bottom of the pushing mechanism.

[0019] For example, the lower molding die includes,

[0020] A limiting plate is provided with a limiting groove. The shape and size of the limiting groove match the shape and size of the caster bracket to be processed when viewed from the top hole. The limiting groove is used to pass through the stamping forming column mold of the upper mold assembly.

[0021] A forming groove is provided below the limiting plate at a preset distance. The shape of the forming groove matches the shape of the sheet material after being cut by the lower cutting die, and its size is smaller than that of the sheet material after being cut by the lower cutting die.

[0022] The end face of the forming groove is lower than the pushing mechanism and is used to receive the cut sheet material pushed by the pushing mechanism. A stamping groove is provided at the bottom of the forming groove, and the stamping groove has the same external three-dimensional shape as the caster bracket.

[0023] For example, the pushing mechanism includes,

[0024] A pusher plate is provided with a receiving groove that has the same shape and size as the cut sheet material. The receiving groove is used to receive the sheet material that falls off during cutting. The pusher plate is higher than the end face of the forming groove.

[0025] A connecting post, one end of which is connected to one end of the pusher plate;

[0026] A fixing plate, one side of which is connected to the other end of the connecting column, and the other side of which is used to connect to the driving mechanism;

[0027] When the pusher plate pushes the sheet material cut by the lower cutting die to the forming groove end face of the lower forming die, the distance between the pusher plate and the forming groove end face is greater than or equal to the sheet material thickness.

[0028] For example, the tooling further includes a support base; the support base includes a support plate and support legs disposed on both sides of the lower surface of the support plate along the length direction of the lower template, the lower template is disposed on the upper surface of the support plate, the support plate is located at the position of the lower cutting die, and a positioning groove is disposed along the width direction of the lower template, and a sliding groove is disposed in the central area of ​​the positioning groove; the pusher plate is disposed in the positioning groove, and the connecting column is disposed in the sliding groove and can move in the sliding groove to drive the pusher plate to move in the positioning groove.

[0029] For example, the upper pressure column mold includes an upper pressure column, which cooperates with the lower punching mold to punch holes in the plate to be processed in all directions;

[0030] The top hole punching die includes a top hole punching opening, which cooperates with the bottom top hole die to punch and form the punched sheet metal.

[0031] The die-cutting column includes a die-cutting column. The shape and size of the cross-section of the die-cutting column are the same as the shape and size of the unfolded plane of the plate to be processed. The die-cutting column cooperates with the lower die to cut the plate after the top hole is punched to form the plate to be punched and shaped.

[0032] The stamping forming die includes a stamping forming column. The shape and size of the cross-section of the stamping forming column match the shape and size of the caster bracket to be processed when viewed from the top hole. The stamping forming column cooperates with the lower forming die to stamp the cut sheet metal.

[0033] For example, the upper template includes:

[0034] The driver board is used to connect the driver unit;

[0035] The second pressure plate has an elastic gap with the drive plate, and the second pressure plate is slidably connected to the drive plate;

[0036] One end of the punching column of the upper pressure column mold and the cutting column of the cutting column mold are respectively connected to the second pressure plate through the second pressure plate and the drive plate; the top hole punching port of the top hole punching die is set in the second pressure plate; the other end of the punching column and the cutting column are respectively set in the second pressure plate; the second pressure plate can slide relative to the punching column and the cutting column.

[0037] The stamping die is disposed on one side of the upper template.

[0038] The drive plate moves downward to the template, so that the upper template and the lower template fit together. When the drive plate fits together with the second pressure plate, the upper pressure column mold and the second end of the cutting column mold extend out of the second pressure plate and cooperate with the corresponding mold of the lower template to achieve the corresponding stamping and forming. The stamping and forming column mold extends into the lower forming mold to achieve the corresponding stamping and shaping.

[0039] For example, during the tooling stamping process, the pusher plate pushes the cut sheet metal to the lower forming die. The stamping forming column die moves down and presses the cut sheet metal into the forming groove below the forming die through the forming groove of the limiting plate. After forming, the pressed sheet metal wraps around the stamping forming column die. The stamping forming column die rises with the pressed sheet metal. When passing the limiting plate, since the limiting groove and the forming column are the same size, the formed sheet metal is restricted from moving by the limiting plate. The forming column continues to move upward, and the formed sheet metal falls off. Before falling off, the pusher plate extends in advance to push the fallen formed part out and it falls into the pre-prepared unloading chute.

[0040] The beneficial effects of the embodiments disclosed herein are:

[0041] The tooling structure of this embodiment is simple, can realize multiple processing steps, reduce personnel involvement, and can process caster brackets in one process, thus improving processing efficiency. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the caster bracket structure to be processed according to an embodiment of this disclosure;

[0043] Figure 2 This is a schematic diagram of the disassembly structure of a caster bracket stamping fixture provided in an embodiment of this disclosure;

[0044] Figure 3 This is a schematic diagram of the disassembly structure of a caster bracket stamping fixture provided in an embodiment of this disclosure;

[0045] Figure 4 This is a schematic diagram of the pushing mechanism structure of a caster bracket stamping fixture provided in an embodiment of this disclosure;

[0046] Figure 5 This is a schematic diagram of the support base of a caster bracket stamping fixture provided in an embodiment of this disclosure;

[0047] Figure 6 This is a schematic diagram of the structure of a caster bracket stamping fixture after the first pressure plate and the base plate are attached, according to an embodiment of this disclosure;

[0048] Figure 7 This is a schematic diagram showing the distribution of molds in the first pressure plate of a caster bracket stamping fixture provided in an embodiment of this disclosure.

[0049] In the picture,

[0050] 100. Upper template; 110. Upper pressure column mold; 120. Top hole punching mold; 130. Press-cut column mold; 140. Stamping forming column mold; 150. Drive plate; 160. Second pressure plate; 200. Lower template; 210. Punching lower mold; 220. Top hole lower mold; 230. Cutting lower mold; 240. Pushing mechanism; 241. Pushing plate; 242. Connecting column; 243. Fixing plate; 250. Lower forming mold; 251. Limiting plate; 252. Limiting groove; 253. Forming groove; 254. Stamping groove; 260. First pressure plate; 270. Base plate; 300. Support base; 310. Support plate; 320. Support leg; 330. Positioning groove; 340. Slide groove; 400. Bracket; 410. Through groove; 500. Caster bracket. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of this disclosure and are not intended to limit the embodiments of this disclosure.

[0052] like Figure 2 and Figure 3 As shown in the present invention, an embodiment of the present invention proposes a caster bracket stamping fixture, which is applied to the caster bracket 500 for step-by-step stamping and one-time forming. The fixture includes: an upper template 100, the upper template 100 being provided with an upper mold group; the upper mold group includes an upper pressing column mold 110, a top hole stamping mold 120, a pressing column mold 130 and a stamping forming column mold 140 arranged sequentially along the conveying direction of the plate to be processed.

[0053] A lower template 200 is provided with a lower mold assembly. The lower mold assembly includes a punching lower mold 210, a top hole lower mold 220, and a cutting lower mold 230 arranged sequentially along the conveying direction of the sheet to be processed. A pushing mechanism 240 is disposed at the bottom of the cutting lower mold 230, and a lower forming mold 250 is disposed at the end of the pushing mechanism 240. The pushing mechanism 240 is used to push the sheet material cut by the cutting lower mold 230 to the lower forming mold 250. Each upper mold of the upper mold assembly corresponds one-to-one with a corresponding lower mold of the lower mold assembly.

[0054] The caster bracket 500 stamped in this embodiment can be used for roller skates, but is not limited thereto. The upper mold group of the upper template 100 in this embodiment is provided with molds corresponding to the lower molds of the lower template 200. The upper mold group and the lower mold group cooperate to gradually stamp and process the preset caster bracket 500 in one go. During use, the rigid material used for stamping is gradually passed through the stamping gap between the upper mold group and the lower mold group under the drive of a matching conveyor device. The rigid material is a steel plate, which enters as a steel coil. The steel plate is gradually fed into the stamping fixture without being broken.

[0055] Specifically, the sheet material to be processed is placed on the surface of the lower punching die 210. The upper template 100 and the lower template 200 are pressed together, and the upper punching die and the lower punching die cooperate to punch holes in the sheet material. The relative position and size of each hole are the same as the relative position and size of each hole when the caster bracket 500 is unfolded. The caster bracket 500 has a circular top hole and rectangular or square mounting holes. The top hole and mounting holes are spaced apart. Four fixing holes are arranged in a row between the top hole and the mounting holes and are perpendicular to the line connecting the top hole and the mounting holes. The two middle fixing holes are located on both sides of the mounting holes and close to the mounting holes. The size of the fixing holes is much smaller than the size of the top hole and the mounting holes. The upper template 100 is lifted, and the punched sheet material is further fed into the lower punching die 220. The upper template 100 and the lower template 200 are pressed together, and the upper punching die and the lower punching die are pressed together. The lower mold engages to press and mold the circular top hole to form a raised structure. At this point, the size of the top hole is slightly increased, meaning that the central area of ​​the raised structure is a circular top hole. The upper mold plate 100 is lifted, and the sheet metal is fed into the lower cutting mold for cutting. The upper mold plate 100 and the lower mold plate 200 are pressed together, and the pressing and cutting mold and the lower cutting mold work together to cut the sheet metal into the unfolded planar shape of the pre-processed caster bracket 500. The upper mold plate 100 is lifted, and the cut sheet metal falls onto the pushing mechanism. The pushing mechanism 240 pushes the cut sheet metal to the lower forming mold 250, and the upper mold plate 100 is pressed together. The stamping forming mold of the upper mold plate 100 presses the sheet metal onto the lower forming mold 250, stamping to form the final caster bracket 500, completing one stamping process. No welding or other processes are required. The overall tooling structure is simple and easy to operate.

[0056] like Figure 7 As shown, if the lower template 200 is equipped with multiple punched lower molds 210, it can be done as follows: Figure 7 The arrangement in the middle is compact and saves space. The corresponding number of top hole lower molds 220 and cutting lower molds 230 should be the same as the number of punching lower molds 210. Multiple punching lower molds 210 can be staggered in the width direction of the lower template, and the top hole lower molds 220 can be staggered in the width direction of the lower template. Multiple cutting lower molds are spaced at a preset distance in the length direction of the lower template and staggered in the width direction. The corresponding upper template has the same number and corresponding positions of molds as the lower template molds, which will not be described in detail here.

[0057] The caster bracket stamping fixture of this disclosure can also process multiple caster brackets at once, improving processing efficiency. The entire process can be automated, or manual assistance can be used for pushing the material. It has high processing accuracy and fast speed.

[0058] like Figure 2As shown, as a specific example of the lower template 200, the lower template 200 includes a first pressure plate 260 and a base plate 270; there is an elastic gap between the first pressure plate 260 and the base plate 270, and the first pressure plate 260 and the base plate 270 are slidably connected. The punching die 210 and the top-hole die 220 are respectively inserted through the first pressure plate 260. One end of the punching die 210 and the top-hole die 220 are respectively connected to the base plate 270, and the other end of the punching die 210 and the top-hole die 220 are respectively disposed in the first pressure plate 260. The other end of the top-hole die 220 is higher than the other end of the punching die 210. The first pressure plate 260 can slide relative to the punching die 210 and the top-hole die 220. The cutting die 230 is disposed in the first pressure plate 260. The upper template 100 drives the upper die assembly to move downward and squeeze the lower template 200. When the first pressure plate 260 moves towards the base plate and fits against the base plate 270, the other end face of the punching die 210 is flush with the upper surface of the first pressure plate 260, and the other end of the top-hole die 220 extends out of the first pressure plate 260. The lower forming mold 250 is located on one side of the lower template 200 and corresponds to the pushing mechanism.

[0059] It should be noted that the elastic gap between the pressure plates in the stamping fixture is a conventional feature. For example, the first pressure plate 260 and the base plate 270 can be connected by a slidable connecting rod disposed inside both of them. The two ends of the connecting rod are respectively disposed inside the first pressure plate 260 and the base plate 270. One end of the connecting rod is provided with an elastic element, allowing the first pressure plate 260 to move up and down relative to the base plate 270, thus achieving a sliding connection. Alternatively, the elastic element can be disposed between the first pressure plate 260 and the base plate 270. In this case, one end of the connecting rod is fixedly connected to the base plate 270, and the other end of the connecting rod is slidably connected to the first pressure plate 260.

[0060] The upper template 100 drives the upper mold assembly to move downward, pressing the lower template 200. When the first pressure plate 260 moves downward and fits against the base plate 270, the other end face of the punching lower mold 210 is flush with the upper surface of the first pressure plate 260, and the other end of the top hole lower mold 220 extends out of the first pressure plate 260. Combined with the upper pressure column mold and the top hole punching mold of the upper template 100, the punching, top hole forming and cutting processes are realized respectively.

[0061] like Figure 6As shown, as a specific example of the punching lower mold 210, the punching lower mold 210 includes a punching column, one end of which is disposed on the base plate 270, and the other end of which passes through the first pressure plate 260; the upper surface of the other end of the punching column is provided with all the holes of the caster bracket 500 to be processed, and the size and relative position of each hole are the same as the size and relative position of the corresponding hole in the unfolded plane of the caster bracket 500 to be processed.

[0062] In other words, the size and position of each hole on the upper surface of the other end of the punched column are determined according to the size and position of the holes in the unfolded plane of the caster bracket 500 to be processed.

[0063] The upper mold assembly includes an upper pressure column mold 110, which includes multiple upper pressure columns. The position and cross-sectional dimensions of each upper pressure column correspond to the corresponding holes at the other end of the punching column of the lower punching mold. The upper template 100 moves to the lower template, the first pressure plate fits against the bottom plate, and the end face of the other end of the punching column is flush with the surface of the first pressure plate. The upper pressure column passes through the corresponding hole to punch the plate to be processed.

[0064] like Figure 6 As shown, the lower mold of the top hole includes a top hole forming column. The cross-section of the top hole forming column is the same as the shape and size of the fixed seat of the caster bracket 500 to be processed located in the top hole. The cross-sectional size of the top hole forming column is larger than the size of the top hole of the caster bracket 500 to be processed, so that the top hole of the caster to be processed forms a protruding fixed seat.

[0065] When the tooling of this embodiment punches the top hole, the top hole is located in the central area of ​​the lower die 220. The surface of the lower die 220 is slightly larger than the top hole, so that the top hole forming post forms a fixed seat with the top hole protrusion shape of the caster bracket 500 after punching the plate. A center hole can be provided in the central area of ​​the lower die to position the plate. The upper die assembly includes a top hole punching die 120 corresponding to the lower die. The top hole punching die includes a top hole punching opening. The size of the top hole punching opening is larger than the top hole size of the plate after punching and slightly larger than the cross-sectional size of the top hole forming post, and corresponds to the cross-sectional shape of the top hole forming post. The upper die moves to the lower die to punch the plate after punching. The first pressure plate is in contact with the bottom plate. The other end of the top hole forming post extends out of the first pressure plate. The top hole punching opening is sleeved on the top hole forming post to form the protrusion structure of the top hole of the caster bracket 500 to be processed.

[0066] like Figure 2 and Figure 6 As shown, the cutting die 230 includes a cutting opening that matches the shape and size of the unfolded plane of the caster bracket 500 to be processed, and the bottom plate has a through hole that matches the shape and size of the cutting opening. The cut plate material falls through the through hole to the bottom of the pushing mechanism 240.

[0067] The size of the through hole can be slightly larger than the cutting opening. The upper template 100 includes a pressure cutting column mold 130 corresponding to the lower cutting mold 230. The pressure cutting column mold 130 includes a pressure cutting column. The cross-sectional shape and size of the pressure cutting column are the same as the unfolded plane shape and size of the plate to be processed. During cutting, the upper mold moves to the lower mold, the first pressure plate fits against the bottom plate, and the pressure cutting column can pass through the cutting opening to achieve cutting.

[0068] like Figure 2 As shown, the lower forming mold 250 includes a limiting plate 251, which has a limiting groove 252. The shape and size of the limiting groove 252 match the shape and size of the caster bracket 500 to be processed when viewed from the top hole. The limiting groove 252 is used to pass through the stamping forming column mold 140 of the upper mold assembly. A forming groove 253 is provided below the limiting plate 251 at a preset distance. The shape of the forming groove matches the shape of the sheet metal after being cut by the lower cutting mold; its size is slightly smaller than the sheet metal after being cut by the lower cutting mold. The end face of the forming groove 253 is lower than the pushing mechanism and is used to receive the cut sheet metal pushed by the pushing mechanism. A stamping groove 254 is provided at the bottom of the forming groove 253. The stamping groove 254 has the same external three-dimensional shape as the caster bracket 500. Specifically, the shape of the stamping groove can be the same as the shape of the caster bracket to be processed when viewed from the top hole, and its size can be slightly larger than the corresponding three-dimensional size of the caster bracket to be processed.

[0069] In this embodiment, the end face of the forming groove 253 is lower than the pusher plate of the pusher mechanism. In this embodiment, the lower forming mold 250 and the pusher mechanism 240 are respectively disposed on both sides of the lower template 200 of the corresponding cutting lower mold 230. After receiving the cut sheet material, the pusher mechanism 240 pushes the cut sheet material out along the width direction of the lower template 200 and into the upper part of the forming groove 253. When the cut sheet material just falls into the end face of the forming groove 253, the size of the end face is smaller than that of the cut sheet material. The upper mold assembly includes a stamping forming column mold 140 corresponding to the lower forming mold 250. The stamping forming column mold 140 includes a stamping forming column. The upper template 100 moves downward and presses against the lower template 200. The stamping forming column passes through a limiting groove to press the sheet material into the stamping groove, thereby realizing the stamping forming of the cut sheet material.

[0070] like Figure 4As shown, the pushing mechanism 240 includes a pushing plate 241, which has a receiving groove with the same shape and size as the cutting opening, used to receive the cut sheet material. The pushing plate is higher than the end face of the forming groove. A connecting column 242 is connected at one end to one end of the pushing plate 241. A fixing plate 243 is connected at one side to the other end of the connecting column 242, and at the other side to a driving mechanism. When the pushing plate pushes the sheet material cut by the lower cutting die to the end face of the forming groove of the lower forming die, the distance between the pushing plate and the end face of the forming groove is greater than or equal to the thickness of the sheet material.

[0071] A support plate 310 is also provided below the pusher plate 241. A groove 340 is provided in the central area of ​​the support plate 310. The groove 340 is for the connecting column 242 to slide. The width of the groove 340 is smaller than the width of the cut plate along the groove width direction, so that the cut plate will not fall out of the positioning groove.

[0072] like Figure 5 As shown, as a specific example of the tooling, the tooling also includes a support base 300; the support base 300 includes a support plate 310 and support legs 320 disposed on both sides of the lower surface of the support plate 310 along the length direction of the lower template 200. The lower template 200 is disposed on the upper surface of the support plate 310. The support plate 310 is located at the position of the cutting lower die 230 and is provided with a positioning groove 330 along the width direction of the lower template 200. A sliding groove 340 is provided in the central area of ​​the positioning groove 330. The pusher plate 241 is disposed in the positioning groove 330, and the connecting column 242 is disposed in the sliding groove 340 and can move in the sliding groove 340 to drive the pusher plate 241 to move in the positioning groove 330.

[0073] The end face of the forming groove is lower than the positioning groove 330, so that after the receiving groove of the pusher plate 241 moves to the forming groove, the plate falls to the end face of the forming groove.

[0074] like Figure 3As shown, the upper pressing die 110 includes an upper pressing column, which cooperates with the lower punching die to punch holes in the plate to be processed from all directions. The top hole punching die 120 includes a top hole punching port, which cooperates with the lower top hole die to punch and form the plate after punching. The pressure cutting die 130 includes a pressure cutting column, the shape and size of which are the same as the shape and size of the unfolded plane of the plate to be processed. The pressure cutting column cooperates with the lower cutting die 230 to cut the plate after top hole punching to form the plate to be stamped and shaped. The stamping forming die 140 includes a stamping forming column, the shape and size of which are the same as the shape and size of the caster bracket (500) to be processed from the top hole when viewed from below. The stamping forming column cooperates with the lower forming die 250 to stamp and form the cut plate.

[0075] The upper template 100 and lower template 200 separate, and the sheet material to be processed is moved to the punching position. The sheet material is located on the surface of the lower punching die. The upper template 100 is controlled to move downwards, and the two templates are pressed together. The lower punching die cooperates with the upper pressing die 110 to punch holes in the sheet material. The upper template 100 is controlled to move upwards, and the two templates separate. The punched sheet material is then fed to the top hole punching position, so that the top hole of the punched sheet material moves to the lower top hole die. The upper template 100 is controlled to move downwards, and the two templates are pressed together. The lower top hole die cooperates with the top hole punching die 120 to punch the punched sheet material to form a raised structure. The upper template 100 is controlled to move upward, the two templates separate, and the sheet metal after top hole punching is sent to the cutting position. The holes of the sheet metal after top hole punching are located in the lower cutting die 230. The upper template 100 is controlled to move downward in the direction of the lower template, the two templates are pressed together, the lower cutting die 230 cooperates with the pressing die 130 to cut the sheet metal after top hole punching. The cut sheet metal falls into the receiving groove in the push plate 241 of the lower push mechanism 240. The upper template 100 is lifted; the push plate 241 is pushed to push the cut sheet metal into the forming groove of the lower forming die 250. The upper template 100 is controlled to move downward to punch and form the cut sheet metal.

[0076] like Figure 3As shown, the upper template 100 includes: a drive plate 150 for connecting the drive unit; a second pressure plate 160, with an elastic gap between the second pressure plate 160 and the drive plate 150, and the second pressure plate 160 and the drive plate 150 are slidably connected; the punching column of the upper pressure column mold 110 and the pressure cutting column mold 130 are respectively inserted through the second pressure plate 160, one end of the punching column mold, the top hole punching mold 120 and the pressure cutting column of the pressure cutting mold 130 are respectively inserted through the second pressure plate 160 and connected to the drive plate 150, and the top hole punching port of the top hole punching mold 120 is disposed in the second pressure plate 160. The other ends of the punching column and the cutting column are respectively disposed within the second pressure plate 160; the second pressure plate 160 is slidable relative to the punching column and the cutting column; the stamping forming die 140 is disposed on one side of the upper template 100. The drive plate 150 moves to the lower template, so that the upper template and the lower template are in contact. When the drive plate is in contact with the second pressure plate 160, the second ends of the upper pressing die 110 and the cutting die 130 extend out of the second pressure plate 160 and cooperate with the corresponding molds of the lower template to achieve the corresponding stamping forming. The stamping forming die 140 extends into the lower forming die 250 to achieve the corresponding stamping shaping.

[0077] It should be noted that the elastic gap between the pressure plates in the stamping fixture is a conventional feature. For example, the second pressure plate 160 and the drive plate 150 can be connected by a slidable connecting rod disposed inside both of them. The two ends of the connecting rod are respectively disposed inside the second pressure plate 160 and the base plate 270. One end of the connecting rod located inside the drive plate 150 is provided with an elastic element, and the other end of the connecting rod is fixedly connected to the second pressure plate 160, allowing the second pressure plate 160 to move up and down relative to the drive plate 150, achieving a sliding connection. Alternatively, the elastic element can be disposed between the second pressure plate 160 and the drive plate 150, with both ends of the elastic element connected to the second pressure plate 160 and the drive plate 150 respectively. In this case, one end of the connecting rod is fixedly connected to the drive plate 150, and the other end of the connecting rod is slidably connected to the second pressure plate 160. A mounting plate can be disposed on the drive plate 150, and the mounting plate is connected to the drive unit.

[0078] During the stamping process, the pusher plate 241 pushes the cut sheet metal to the lower forming die 250, and the sheet metal falls to the end face of the forming groove. The stamping forming column die 140 moves down through the limiting groove 252 of the limiting plate 251 and enters the forming groove 253 to press the cut sheet metal into the stamping groove 254 below the forming die for stamping. The stamped sheet metal wraps around the stamping forming column die 140. The stamping forming column die 140 moves up and takes the formed sheet metal back up. When it passes the limiting plate 251, since the limiting groove 252 and the forming column are the same size, the limiting plate 251 restricts the movement of the formed sheet metal. The forming column continues to move up, and the formed sheet metal falls off. Before falling off, the pusher plate 241 extends out in advance to catch the falling formed part and pushes the formed part out, which falls into the pre-prepared unloading chute.

[0079] The process of machining the caster bracket 500 using the tooling of this embodiment is as follows: When the upper template 100 and the lower template 200 separate, under the action of the elastic element, there is an elastic gap between the first pressure plate 260 and the bottom plate 270. The other ends of the punching lower die 210 and the top hole lower die 220 are respectively located inside the first pressure plate 260; the second pressure plate 160 has an elastic gap with the drive plate 150 under the action of gravity and the elastic element. The other ends of the upper pressure column die 110, the top hole punching die 120, and the pressing column die 130 are respectively located inside the second pressure plate 160; during each machining operation, the drive plate 150 moves downward. When the lower template 200 is pressed, due to the action of the elastic element, the first pressure plate 260 is in contact with the base plate 270, the second pressure plate 160 is in contact with the drive plate 150, and the first pressure plate 260 is in contact with the second pressure plate 160. The other ends of the upper pressure column die 110 and the cutting column die 130 of the upper template 100 extend out of the second pressure plate 160, respectively. The surface of the punching lower die of the lower template 200 is flush with the surface of the first pressure plate 260, and the other end of the top hole lower die extends out of the first pressure plate 260. The stamping forming column die 140 extends into the lower forming die 250. Each processing step requires driving the upper template 100 to move up and down. When the upper template 100 moves upward and separates from the lower template 200, it pushes the plate to be processed to the corresponding lower die, drives the upper template 100 to move downward, and realizes the corresponding processing operation. This cycle continues until the caster bracket 500 is obtained.

[0080] The tooling also includes: a bracket 400, on the upper surface of the bracket 400 is the support seat 300, the bracket 400 is provided with a through groove 410 corresponding to the slide groove 340, the connecting column 242 of the pushing mechanism 240 is provided on the lower surface of the through groove 410, and the connecting column 242 moves in the slide groove 340 and the through groove 410.

[0081] The above description is only a preferred embodiment of the present disclosure. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present disclosure, and these improvements and modifications should also be considered within the protection scope of the present disclosure.

Claims

1. A caster bracket stamping tool characterized by, The tooling includes: Upper template (100), wherein the upper template (100) is provided with an upper mold assembly; The upper mold assembly includes an upper pressing column mold (110), a top hole punching mold (120), a pressing and cutting column mold (130), and a stamping and forming column mold (140) arranged sequentially along the conveying direction of the plate to be processed. The lower template (200) is provided with a lower mold assembly; The lower mold assembly includes a punching lower mold (210), a top hole lower mold (220), and a cutting lower mold (230) arranged sequentially along the conveying direction of the plate to be processed. The cutting lower mold (230) is equipped with a pushing mechanism (240) at its bottom and a lower forming mold (250) at its end. The pushing mechanism (240) is used to push the plate material cut by the cutting lower mold (230) to the lower forming mold (250). Each upper mold of the upper mold group corresponds one-to-one with the corresponding lower mold of the lower mold group.

2. The tooling of claim 1, wherein, The lower template (200) includes a first pressure plate (260) and a base plate (270); There is an elastic gap between the first pressure plate (260) and the base plate (270), and the first pressure plate (260) and the base plate (270) are slidably connected; The punching die (210) and the top hole die (220) are respectively installed in the first pressure plate (260). One end of the punching die (210) and the top hole die (220) are respectively connected to the base plate (270). The other end of the punching die (210) and the top hole die (220) are respectively disposed in the first pressure plate (260). The other end of the top hole die (220) is higher than the other end of the punching die (210). The first pressure plate (260) can slide relative to the punching die (210) and the top hole die (220). The cutting die (230) is disposed in the first pressure plate (260). The upper template (100) drives the upper mold assembly to move downward, pressing the lower template (200). When the first pressure plate (260) moves towards the bottom plate and fits against the bottom plate (270), the other end face of the punching lower mold (210) is flush with the upper surface of the first pressure plate (260), and the other end of the top hole lower mold (220) extends out of the first pressure plate (260). The lower forming mold (250) is located on one side of the lower template (200).

3. The tooling of claim 2, wherein, The punching lower mold (210) includes a punching column, one end of which is disposed on the base plate (270), and the other end of which passes through the first pressure plate (260); the upper surface of the other end of the punching column is provided with all the holes of the caster bracket (500) to be processed, and the size and relative position of each hole are the same as the size and relative position of the corresponding hole in the unfolded plane of the caster bracket (500) to be processed.

4. The tooling of any one of claims 1 to 3, wherein, The top hole lower mold (220) includes a top hole forming column. The cross-section of the top hole forming column is the same as the shape and size of the fixed seat of the caster bracket (500) to be processed located in the top hole. The cross-sectional size of the top hole forming column is larger than the top hole size of the caster bracket (500) to be processed.

5. The tooling of claim 2 or 3, wherein, The cutting die (230) includes a cutting opening that matches the shape and size of the unfolded plane of the caster bracket (500) to be processed, and the bottom plate has a through hole that matches the shape and size of the cutting opening. The cut plate material falls through the through hole to the bottom of the pushing mechanism (240).

6. The tooling of any one of claims 1 to 3, wherein, The lower molding die (250) includes, A limiting plate (251) is provided with a limiting groove (252). The shape and size of the limiting groove (252) match the shape and size of the caster bracket (500) to be processed from the top hole. The limiting groove (252) is used to pass through the stamping forming column mold (140) of the upper mold group. A forming groove (253) is provided below the limiting plate (251) at a preset distance. The shape of the forming groove matches the shape of the sheet material after being cut by the lower die, and its size is smaller than that of the sheet material after being cut by the lower die. The end face of the forming groove (253) is lower than the pushing mechanism and is used to receive the cut plate pushed by the pushing mechanism. The bottom of the forming groove (253) is provided with a stamping groove (254), which has the same external three-dimensional shape as the caster bracket (500).

7. The tooling of claim 6 wherein, The pushing mechanism (240) includes, The pusher plate (241) is provided with a receiving groove with the same shape and size as the cut plate. The receiving groove is used to receive the cut plate. The pusher plate is higher than the end face of the forming groove. A connecting post (242), one end of which is connected to one end of the pusher plate (241); A fixing plate (243) is provided, one side of which is connected to the other end of the connecting column (242), and the other side of which is used to connect to the drive mechanism. When the pusher plate pushes the sheet material cut by the lower cutting die to the forming groove end face of the lower forming die, the distance between the pusher plate and the forming groove end face is greater than or equal to the sheet material thickness.

8. The tooling of claim 7, wherein, The tooling also includes a support base (300); the support base includes a support plate (310) and support legs (320) arranged on both sides of the lower surface of the support plate (310) along the length direction of the lower template (200). The lower template (200) is arranged on the upper surface of the support plate (310). The support plate (310) is located at the position of the cutting die (230) and is provided with a positioning groove (330) along the width direction of the lower template (200). A sliding groove (340) is provided in the central area of ​​the positioning groove (330). The pusher plate (241) is arranged in the positioning groove (330), and the connecting column (242) is arranged in the sliding groove (340) and can move in the sliding groove (340) to drive the pusher plate (241) to move in the positioning groove (330).

9. The tooling of any one of claims 1 to 3, wherein, The upper pressure column mold (110) includes an upper pressure column, which cooperates with the lower punching mold (210) to punch holes in the plate to be processed in all directions; The top hole punching die (120) includes a top hole punching port, which cooperates with the lower top hole die to perform top hole punching on the punched sheet metal; The die-cutting column (130) includes a die-cutting column. The shape and size of the cross-section of the die-cutting column are the same as the shape and size of the unfolded plane of the plate to be processed. The die-cutting column cooperates with the cutting die (230) to cut the plate after the top hole is punched to form a plate to be punched and shaped. The stamping forming column mold (140) includes a stamping forming column. The shape and size of the cross-section of the stamping forming column match the shape and size of the caster bracket (500) to be processed from the top hole when viewed from below. The stamping forming column cooperates with the lower forming mold (250) to stamp and form the cut sheet metal.

10. The tooling of claim 9, wherein, The upper template (100) includes: Drive board (150), used to connect the drive unit; The second pressure plate (160) has an elastic gap with the drive plate (150), and the second pressure plate (160) is slidably connected to the drive plate (150). One end of the punching column of the upper pressing column mold (110) and the cutting column of the cutting column mold (130) are respectively connected to the second pressure plate (160) and the drive plate (150). The top hole punching port of the top hole punching die (120) is set in the second pressure plate (160). The other end of the punching column and the cutting column are respectively set in the second pressure plate (160). The second pressure plate (160) can slide relative to the punching column and the cutting column. The stamping die (140) is disposed on one side of the upper template (100); The drive plate (150) moves downward to the template, so that the upper template and the lower template are in contact. When the drive plate is in contact with the second pressure plate (160), the second ends of the upper pressure column mold (110) and the cutting column mold (130) extend out of the second pressure plate (160) and cooperate with the corresponding mold of the lower template to achieve the corresponding stamping and forming. The stamping and forming column mold (140) extends into the lower forming mold (250) to achieve the corresponding stamping and shaping.

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