Stamping die with replaceable stamping die head

Abstract

The utility model discloses a stamping die with a replaceable stamping die head, which belongs to the technical field of stamping dies and comprises a stamping body provided with a die component. The mold assembly comprises a lower mold assembly and an upper mold assembly, and a connecting assembly is mounted on the mold assembly; and a material pushing assembly is mounted on the stamping main body. By means of the mode, the workpiece is cut after being positioned through the positioning pin, and the phenomenon that the length of the cut workpiece is small due to the fact that the workpiece collides with the first limiting block to move in the moving process is avoided; and the semi-circular die head can be replaced, and manual blanking and feeding of a formed workpiece are not needed, so that manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a stamping die with a replaceable stamping die head. Background Art

[0002] Stamping dies are usually used in metal material processing. They are tools used to perform stamping on metal sheets or other materials. Stamping dies usually include an upper die and a lower die. Pressure is applied between the upper and lower dies through a punch press to deform the material under the action of the die, thereby obtaining parts of the desired shape.

[0003] Chinese patent CN218946110U discloses a stamping die with a replaceable stamping die head. The utility model includes a die table and a die head. The die table is provided with a die and a stamping machine frame. The stamping machine frame is provided with a hydraulic mechanism. An electric push rod is installed on the bottom of the die table. The output shaft of the electric push rod passes through the die table. A top plate is provided at one end of the die. A groove is provided on the inner wall of the lower part of the die, and the top plate is located in the groove. Four supporting legs are provided on the bottom of the die table, which is convenient for driving the top plate to slide by the electric push rod to eject the object in the die.

[0004] However, after the workpiece of the patent is stamped, the electric push rod drives the top plate to push the workpiece out of the die, and then the workpiece is taken away manually, and then the next workpiece to be stamped is prevented from being stamped at the stamping position. The steps are cumbersome and waste manpower.

[0005] Based on this, the utility model designs a stamping die with a replaceable stamping die head to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a stamping die with a replaceable stamping die head.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A stamping die with a replaceable stamping die head, comprising a stamping body;

[0009] A die assembly is installed on the stamping body;

[0010] The mold assembly includes a lower mold assembly and an upper mold assembly, and the lower mold assembly and the upper mold assembly are both connected to the punch body;

[0011] A connecting component is installed on the mold component;

[0012] A material pushing assembly is installed on the punching body.

[0013] Furthermore, the lower mold assembly includes a lower mold plate, a limiting column, a first limiting block, a second limiting block, a protrusion, a semicircular pressure groove and a blanking plate. Two rows of symmetrically arranged limiting columns are fixedly connected to the rear side of the upper end of the lower mold plate, the first limiting block and two second limiting blocks are fixedly connected to the left side of the upper end of the lower mold plate, the front sides of the inner ends of the second limiting blocks are fixedly connected to protrusions, a semicircular pressure groove is opened on the left side of the upper end of the lower mold plate, the semicircular pressure groove is connected to the pushing assembly, and the rear end of the blanking plate is fixedly connected to the lower mold plate.

[0014] Furthermore, the lower template is fixedly connected to the upper end of the base of the stamping body, the blanking plate is fixedly connected to the left side of the front end of the stamping body, and blanking holes are provided on the bottom plate of the stamping body and the lower template.

[0015] Furthermore, the upper mold assembly includes a sliding plate, an upper mold plate, a spring buffer, a circular mold head, a cutter, a positioning pin and an avoidance groove. The lower end of the sliding plate is fixedly connected to the spring buffer, and the lower end of the spring buffer is fixedly connected to the upper mold plate. The upper mold plate is provided with a square hole and two circular holes, and the lower end of the sliding plate is fixedly connected to the cutter and two circular mold heads. The lower ends of the circular mold head and the cutter are respectively embedded in the circular hole and the square hole and are slidably connected to the circular hole and the square hole. The upper mold plate is provided with an avoidance limit column, a first limit block, a second limit block, a protrusion and an avoidance groove of the pusher assembly, and two positioning pins are fixedly connected to the left side of the lower end of the upper mold plate.

[0016] Furthermore, the sliding plate is sleeved on the sliding rod of the punching body at its periphery and is slidably connected to the punching body.

[0017] Furthermore, the height of the positioning pin is smaller than the thickness of the workpiece.

[0018] Furthermore, the connecting assembly includes a semicircular mold head, a connecting column, a mounting groove, a fixing block, a connecting ear, a positioning hole, a locking rod, a spring and a limit block. A mounting groove is provided at the lower end of the sliding plate, and the inner walls of the left and right ends of the mounting groove are fixedly connected with fixing blocks. The upper end of the connecting column is embedded in the mounting groove, and the left and right sides of the upper end of the connecting column are fixedly connected with connecting ears. The fixing block and the connecting ear are snap-connected, and the rear side of the upper end of the left fixed block and the front side of the upper end of the right fixed block are fixedly connected with the limiting block. The lower end of the connecting column passes through the upper template and is fixedly connected to the semicircular mold head. The upper end of the semicircular mold head is in contact with the lower end of the upper template, the connecting column is slidably connected to the upper template, and a positioning hole is provided on the front side of the upper end of the connecting column. The locking rod is slidably connected to the front end of the sliding plate, and the rear end of the locking rod passes through the sliding plate and is embedded in the positioning hole. The spring is sleeved on the locking rod, and the two ends of the spring are respectively fixedly connected to the sliding plate and the locking rod.

[0019] Furthermore, the pushing assembly includes a cylinder and a pushing block. The cylinder is fixedly connected to the left side of the upper end of the bottom plate of the stamping body. The output end of the cylinder is fixedly connected to the pushing block. The pushing block is embedded in the semicircular pressing groove and is slidably connected to the semicircular pressing groove.

[0020] The utility model has the following technical effects:

[0021] When the utility model is used, the external feeding mechanism feeds the workpiece into the two limit columns, the driving end of the stamping body drives the sliding plate to move downward, the sliding plate drives the upper template, the spring buffer, the circular die head, the cutter, the positioning pin and the connecting component to move downward, the positioning pin is inserted into the circular hole of the workpiece below to position the workpiece, the connecting component and the semicircular pressing groove cooperate to punch the workpiece below into an inverted Ω shape, when the lower end of the upper template contacts the lower template, the sliding plate continues to move downward to compress the spring buffer, thereby driving the circular die head and the cutter to move downward to punch and cut the workpiece, and the waste after punching passes through the bottom plate of the stamping body And the blanking hole on the lower template is discharged. After completion, the driving end of the stamping body drives the sliding plate to move upward, and the sliding plate drives the upper template, the spring buffer, the circular die head, the cutter, the positioning pin and the connecting assembly to move upward. The pushing assembly drives the cut workpiece to move forward under the limit of the second limit block. The cut workpiece squeezes the inverted Ω-shaped workpiece into the blanking plate, and moves the next workpiece to be formed to the bottom of the connecting assembly. Through the convex block limit, the external feeding mechanism drives the workpiece to continue to move to the left until the left end of the workpiece abuts the first limit block, and repeats the above operations to punch, cut and stamp the workpiece into an inverted Ω shape;

[0022] The utility model positions the workpiece by the positioning pin before cutting the workpiece, so as to prevent the workpiece from shifting due to collision with the first limit block during the moving process, thereby causing the length of the workpiece after cutting to be too short;

[0023] When replacing the utility model, the locking rod is pulled forward to make the rear end of the locking rod disengage from the positioning hole, and the connecting column is rotated counterclockwise to a rotation angle of 180 degrees. At this time, the connecting ear and the fixing block are misaligned, and the semicircular mold head is pulled downward. The semicircular mold head drives the connecting column to move downward until the connecting column is completely separated from the upper template, and the upper end of the new connecting column is inserted into the installation groove through the upper template. At this time, the connecting ear is located at the front and rear sides of the connecting column, and the connecting column is rotated clockwise to a rotation angle of 180 degrees. The connecting column drives the connecting ear to rotate until one end of the connecting ear abuts against the limit block, and the locking rod is released. The locking rod is inserted into the positioning hole under the elastic action of the spring to prevent the connecting column from rotating, thereby realizing the limit of the semicircular mold head;

[0024] When the utility model unloads, the cylinder drives the push block to move forward along the semicircular pressing groove, thereby driving the cut workpiece to move forward. The cut workpiece is squeezed into the unloading plate into an inverted Ω-shaped workpiece, and the next workpiece to be formed is moved to just below the semicircular die head, thereby realizing the unloading and loading of the formed workpiece, and no manual operation is required, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A three-dimensional stamping die with a replaceable stamping die head according to the utility model Figure 1 ;

[0027] Figure 2 It is a front view of a stamping die with a replaceable stamping die head according to the utility model;

[0028] Figure 3 It is a right side view of a stamping die with a replaceable stamping die head according to the utility model;

[0029] Figure 4 A three-dimensional stamping die with a replaceable stamping die head according to the utility model Figure 2 ;

[0030] Figure 5 A three-dimensional stamping die with a replaceable stamping die head according to the utility model Figure 3 ;

[0031] Figure 6 For along Figure 2 AA direction cross-sectional view;

[0032] Figure 7 For along Figure 2 BB direction cross-sectional view;

[0033] Figure 8 For along Figure 3 CC direction cross-sectional view;

[0034] Fig. 9 for Figure 4 The enlarged view of point D in the middle;

[0035] Fig.10 for Figure 6 Enlarged view of point E in the middle;

[0036] Fig.11 for Figure 7 Enlarged view of point F in the middle.

[0037] The numbers in the figure represent:

[0038] 1. Stamping body; 2. Die assembly; 21. Lower die assembly; 211. Lower template; 212. Limiting column; 213. First limiting block; 214. Second limiting block; 215. Protrusion; 216. Semicircular pressing groove; 217. Unloading plate; 22. Upper die assembly; 221. Sliding plate; 222. Upper template; 223. Spring buffer; 224. Round die head; 225. Cutter; 226. Positioning pin; 227. Avoidance groove; 228. Round hole; 229. Square hole; 3. Connecting assembly; 31. Semicircular die head; 32. Connecting column; 33. Mounting groove; 34. Fixing block; 35. Connecting ear; 36. Positioning hole; 37. Lock rod; 38. Spring; 39. Limiting block; 4. Pushing assembly; 41. Cylinder; 42. Pushing block; 5. Workpiece. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] The utility model is further described below in conjunction with embodiments.

[0041] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0042] In some embodiments, please refer to the attached instructions. Figure 1-11 , a stamping die with a replaceable stamping die head, comprising a stamping body 1;

[0043] A die assembly 2 is installed on the stamping body 1;

[0044] The mold assembly 2 includes a lower mold assembly 21 and an upper mold assembly 22, and both the lower mold assembly 21 and the upper mold assembly 22 are connected to the stamping body 1;

[0045] The mold assembly 2 is provided with a connecting assembly 3;

[0046] A pusher assembly 4 is installed on the punch body 1 .

[0047] When in use, the external feeding mechanism feeds the workpiece 5 onto the lower die assembly 21, and the driving end of the stamping body 1 drives the upper die assembly 22 to move downward, and the workpiece 5 is punched, cut and formed into an inverted Ω shape under the action of the lower die assembly 21, the upper die assembly 22, the connecting assembly 3 and the pushing assembly 4;

[0048] The lower mold assembly 21 includes a lower mold plate 211, a limiting column 212, a first limiting block 213, a second limiting block 214, a protrusion 215, a semicircular pressing groove 216 and a blanking plate 217. Two rows of symmetrically arranged limiting columns 212 are fixedly connected to the rear side of the upper end of the lower mold plate 211, a first limiting block 213 and two second limiting blocks 214 are fixedly connected to the left side of the upper end of the lower mold plate 211, and the inner front sides of the second limiting blocks 214 are fixedly connected with protrusions 215. A semicircular pressing groove 216 is opened on the left side of the upper end of the lower mold plate 211, and the semicircular pressing groove 216 is connected to the pushing assembly 4. The rear end of the blanking plate 217 is fixedly connected to the lower mold plate 211.

[0049] The length of the protrusion 215 is relatively short, and the two ends of the workpiece 5 do not contact the protrusion 215 after the workpiece 5 is formed into an inverted Ω shape, which facilitates the unloading of the workpiece 5 after forming.

[0050] The lower template 211 is fixedly connected to the upper end of the base of the punch body 1 , and the blanking plate 217 is fixedly connected to the left side of the front end of the punch body 1 . Blanking holes are provided on the bottom plate of the punch body 1 and the lower template 211 .

[0051] The upper mold assembly 22 includes a sliding plate 221, an upper mold plate 222, a spring buffer 223, a circular mold head 224, a cutter 225, a positioning pin 226 and an avoidance groove 227. The lower end of the sliding plate 221 is fixedly connected to the spring buffer 223, and the lower end of the spring buffer 223 is fixedly connected to the upper mold plate 222. The upper mold plate 222 is provided with a square hole 229 and two circular holes 228. The lower end of the sliding plate 221 is fixedly connected to the cutter 225 and two circular mold heads 224. The lower ends of the circular mold head 224 and the cutter 225 are respectively embedded in the circular hole 228 and the square hole 229 and are slidably connected to the circular hole 228 and the square hole 229. The upper mold plate 222 is provided with an avoidance limit column 212, a first limit block 213, a second limit block 214, a protrusion 215 and an avoidance groove 227 of the pusher assembly 4, and two positioning pins 226 are fixedly connected to the left side of the lower end of the upper mold plate 222.

[0052] The sliding plate 221 is sleeved around the sliding rod of the punch body 1 and is slidably connected to the punch body 1 .

[0053] The height of the positioning pin 226 is smaller than the thickness of the workpiece 5 .

[0054] When in use, the external feeding mechanism feeds the workpiece 5 into the two limiting columns 212, and the driving end of the stamping body 1 drives the sliding plate 221 to move downward, and the sliding plate 221 drives the upper template 222, the spring buffer 223, the circular die head 224, the cutter 225, the positioning pin 226 and the connecting component 3 to move downward, and the positioning pin 226 is inserted into the circular hole of the workpiece 5 below to position the workpiece 5, and the connecting component 3 and the semicircular pressing groove 216 cooperate to punch the workpiece 5 below into an inverted Ω shape. When the lower end of the upper template 222 contacts the lower template 211, the sliding plate 221 continues to move downward to compress the spring buffer 223, thereby driving the circular die head 224 and the cutter 225 to move downward to punch and cut the workpiece 5, and the waste after punching passes through the stamping body 1 The bottom plate and the blanking holes on the lower template 211 are discharged. After completion, the driving end of the stamping body 1 drives the sliding plate 221 to move upward, and the sliding plate 221 drives the upper template 222, the spring buffer 223, the circular die head 224, the cutter 225, the positioning pin 226 and the connecting component 3 to move upward, and the pushing component 4 drives the cut workpiece 5 to move forward under the limit of the second limit block 214, and the cut workpiece 5 will be squeezed into the blanking plate 217 into the inverted Ω-shaped workpiece 5, and the next workpiece 5 to be formed is moved to the bottom of the connecting component 3, and is limited by the protrusion 215. The external feeding mechanism drives the workpiece 5 to continue to move to the left until the left end of the workpiece 5 abuts against the first limit block 213, and repeats the above operations to punch, cut and stamp the workpiece 5 into an inverted Ω shape;

[0055] The utility model positions the workpiece 5 by the positioning pin 226 before cutting the workpiece 5, so as to prevent the workpiece 5 from shifting due to hitting the first limit block 213 during the moving process, thereby causing the length of the workpiece 5 to be shorter after cutting;

[0056] The connecting assembly 3 includes a semicircular mold head 31, a connecting column 32, a mounting groove 33, a fixing block 34, a connecting ear 35, a positioning hole 36, a locking rod 37, a spring 38 and a limit block 39. The lower end of the sliding plate 221 is provided with a mounting groove 33, and the inner walls of the left and right ends of the mounting groove 33 are fixedly connected with the fixing blocks 34. The upper end of the connecting column 32 is embedded in the mounting groove 33, and the left and right sides of the upper end of the connecting column 32 are fixedly connected with the connecting ears 35. The fixing block 34 and the connecting ears 35 are snap-fitted. The rear side of the upper end of the left fixing block 34 and the front side of the upper end of the right fixing block 34 are fixedly connected. A fixed connection limit block 39 is provided, and the lower end of the connecting column 32 passes through the upper template 222 and is fixedly connected to the semicircular mold head 31. The upper end of the semicircular mold head 31 is in close contact with the lower end of the upper template 222. The connecting column 32 is slidably connected to the upper template 222. A positioning hole 36 is provided on the front side of the upper end of the connecting column 32. The locking rod 37 is slidably connected to the front end of the sliding plate 221. The rear end of the locking rod 37 passes through the sliding plate 221 and is embedded in the positioning hole 36. A spring 38 is sleeved on the locking rod 37. The two ends of the spring 38 are fixedly connected to the sliding plate 221 and the locking rod 37 respectively.

[0057] When replacing, pull the locking rod 37 forward to disengage the rear end of the locking rod 37 from the positioning hole 36, rotate the connecting post 32 counterclockwise at an angle of 180 degrees, and the connecting ear 35 is misaligned with the fixing block 34. Pull the semicircular mold head 31 downward, and the semicircular mold head 31 drives the connecting post 32 to move downward until the connecting post 32 is completely disengaged from the upper template 222. Insert the upper end of the new connecting post 32 through the upper template 222 into the mounting groove 33, and the connecting ear 35 is located at the front and rear sides of the connecting post 32. Rotate the connecting post 32 clockwise at a rotation angle of 180 degrees, and the connecting post 32 drives the connecting ear 35 to rotate until one end of the connecting ear 35 abuts against the limit block 39, release the locking rod 37, and the locking rod 37 is inserted into the positioning hole 36 under the elastic action of the spring 38 to prevent the connecting post 32 from rotating, thereby realizing the limiting of the semicircular mold head 31.

[0058] The pushing assembly 4 includes a cylinder 41 and a pushing block 42. The cylinder 41 is fixedly connected to the left side of the upper end of the bottom plate of the stamping body 1. The output end of the cylinder 41 is fixedly connected to the pushing block 42. The pushing block 42 is embedded in the semicircular pressing groove 216 and is slidably connected to the semicircular pressing groove 216.

[0059] When unloading, the cylinder 41 drives the push block 42 to move forward along the semicircular pressing groove 216, thereby driving the cut workpiece 5 to move forward. The cut workpiece 5 will be squeezed into the unloading plate 217 into an inverted Ω-shaped workpiece 5, and the next workpiece 5 to be formed will be moved to the bottom of the semicircular mold head 31, realizing the unloading and loading of the formed workpiece 5, without manual operation, saving manpower.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stamping die with a replaceable stamping die head, comprising a stamping body (1), characterized in that: A die assembly (2) is installed on the punch body (1); The mold assembly (2) comprises a lower mold assembly (21) and an upper mold assembly (22), and both the lower mold assembly (21) and the upper mold assembly (22) are connected to the punch body (1); A connecting component (3) is installed on the mold component (2); A material pushing assembly (4) is installed on the punching body (1); The lower die assembly (21) comprises a lower die plate (211), a limiting column (212), a first limiting block (213), a second limiting block (214), a protrusion (215), a semicircular pressing groove (216) and a blanking plate (217); two rows of symmetrically arranged limiting columns (212) are fixedly connected to the rear side of the upper end of the lower die plate (211); a first limiting block (213) and two second limiting blocks (214) are fixedly connected to the left side of the upper end of the lower die plate (211); the inner front sides of the second limiting blocks (214) are fixedly connected to the protrusions (215); a semicircular pressing groove (216) is provided on the left side of the upper end of the lower die plate (211); the semicircular pressing groove (216) is connected to the pusher assembly (4); and the rear end of the blanking plate (217) is fixedly connected to the lower die plate (211); The upper mold assembly (22) comprises a sliding plate (221), an upper mold plate (222), a spring buffer (223), a circular mold head (224), a cutter (225), a positioning pin (226) and an avoidance groove (227); the lower end of the sliding plate (221) is fixedly connected to the spring buffer (223); the lower end of the spring buffer (223) is fixedly connected to the upper mold plate (222); a square hole (229) and two circular holes (228) are provided on the upper mold plate (222); the lower end of the sliding plate (221) is fixedly connected to the cutter (225); 225) and two circular mold heads (224), the lower ends of the circular mold heads (224) and the cutter (225) are respectively embedded in the circular hole (228) and the square hole (229) and are slidably connected with the circular hole (228) and the square hole (229), the upper mold plate (222) is provided with an avoidance limit column (212), a first limit block (213), a second limit block (214), a protrusion (215) and an avoidance groove (227) of the pusher assembly (4), and two positioning pins (226) are fixedly connected to the left side of the lower end of the upper mold plate (222); The connecting assembly (3) comprises a semicircular mold head (31), a connecting column (32), a mounting groove (33), a fixing block (34), a connecting ear (35), a positioning hole (36), a locking rod (37), a spring (38) and a limiting block (39); a mounting groove (33) is provided at the lower end of the sliding plate (221); the fixing blocks (34) are fixedly connected to the inner walls of the left and right ends of the mounting groove (33); the upper end of the connecting column (32) is embedded in the mounting groove (33); the left and right sides of the upper end of the connecting column (32) are fixedly connected to the connecting ears (35); the fixing block (34) and the connecting ears (35) are snap-connected; the rear side of the upper end of the left fixing block (34) and the front side of the upper end of the right fixing block (34) are The connecting column (32) is fixedly connected to the limiting block (39), the lower end of the connecting column (32) passes through the upper template (222) and is fixedly connected to the semicircular mold head (31), the upper end of the semicircular mold head (31) is in close contact with the lower end of the upper template (222), the connecting column (32) is slidably connected to the upper template (222), a positioning hole (36) is provided on the front side of the upper end of the connecting column (32), a locking rod (37) is slidably connected to the front end of the sliding plate (221), the rear end of the locking rod (37) passes through the sliding plate (221) and is embedded in the positioning hole (36), a spring (38) is sleeved on the locking rod (37), and the two ends of the spring (38) are respectively fixedly connected to the sliding plate (221) and the locking rod (37); The pusher assembly (4) comprises a cylinder (41) and a pusher block (42); the cylinder (41) is fixedly connected to the left upper end of the bottom plate of the punching body (1); the output end of the cylinder (41) is fixedly connected to the pusher block (42); the pusher block (42) is embedded in the semicircular pressing groove (216) and is slidably connected to the semicircular pressing groove (216).

2. The stamping die with replaceable stamping die head according to claim 1, characterized in that: The lower template (211) is fixedly connected to the upper end of the base of the punching body (1), the blanking plate (217) is fixedly connected to the left side of the front end of the punching body (1), and blanking holes are provided on the bottom plate of the punching body (1) and the lower template (211).

3. The stamping die with replaceable stamping die head according to claim 2, characterized in that: The sliding plate (221) is sleeved on the sliding rod of the punching body (1) at its periphery and is slidably connected to the punching body (1).

4. The stamping die with replaceable stamping die head according to claim 3, characterized in that: The height of the positioning pin (226) is smaller than the thickness of the workpiece (5).

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