Composite mechanism with R-angle cutting, side cutting and swing cutting

Abstract

The present invention relates to a composite mechanism for completing R-angle trimming, side trimming and swing trimming at the same time, which comprises an upper die and a lower die, wherein the upper die comprises an upper die seat, an upper pad, and an upper stripping plate; the lower die comprises a lower die seat, a lower pad, and a lower die plate, and a side cutting knife block is arranged on the opposite side of the lower die plate, the side cutting knife block is slidably mounted with the lower pad, the side cutting knife block is elastically connected with the lower pad, a lower cover plate is installed on the upper part of the side cutting knife block, the lower cover plate is fixedly installed with the lower pad, a slider is slidably mounted on the lower die plate, the slider is elastically connected with the lower pad, the side of the slider close to the lower cover plate is adaptively matched with the lower cover plate, the side cutting knife block is shear-matched with the slider, a swing cutting knife block is arranged on the side of the side cutting knife block, and one end of the swing cutting knife block is rotatably mounted with the side cutting knife block. In the present invention, the side cutting knife block and the swing cutting knife block cut the workpiece at multiple angles, and the R angle cutting on the workpiece can be quickly completed, and the manufactured product has a beautiful appearance, making the production convenient, efficient and reliable, and suitable for continuous processing operations.

Description

Technical Field

[0001] The invention relates to the technical field of stamping die design and manufacturing, in particular to a composite mechanism capable of simultaneously completing R-angle cutting, side cutting and swing cutting. Background Art

[0002] Stamping is a common and widely used metal workpiece processing technology, often used for cutting, drawing and bending of metal sheets. There are various processing needs in the market. For the stamping cutting of metal sheets with R angles, due to mold structure and process considerations, the industry usually performs three cuts, that is, the first cut cuts off the flat plate on one side of the R angle, the second cut cuts off the flat plate on the other side of the R angle, and the third cut cuts off the R angle. Usually affected by the cutting accuracy of the mold, the cutting seam between each two cuts will be difficult to close together, which is easy to cause joint problems and affect the cutting effect. Therefore, it is necessary to punch a connecting hole at the end of each cut. As long as the cutting seam of the second cut passes through the connecting hole, the cutting can be completed. After the cutting is completed, a connecting gap will be left at the edge of the metal sheet. The more times the cutting is done, the more connecting gaps there will be. For some small R angles that are close to right angles, 2 to 3 cuts are also required, and the product is prone to deformation during cutting.

[0003] Metal sheets are usually used for appearance parts of various home appliances and other products, such as the shells of refrigerators, gas stoves, etc. The shell is the part of the home appliance that faces consumers, and the appearance of the home appliance will greatly affect the sales of the home appliance. If such a shell is made using the above-mentioned process method, a number of cutting gaps will be left on the metal sheet, which will greatly affect the appearance of the product. Subsequently, the manufacturer will need to spend a lot of time to eliminate the impact of such cutting gaps on the appearance, and different molds will be used for multiple cuttings, which has the defects of high processing cost, large workload of mold design and production, and long processing time. Summary of the invention

[0004] The invention provides a composite mechanism capable of completing R-angle cutting, side cutting and swing cutting simultaneously, so as to solve the technical problems in the prior art such as many R-angle cutting blade gaps, complex process and low efficiency.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The present invention relates to a composite mechanism for completing R-angle trimming, side trimming and swing trimming at the same time, which comprises an upper die and a lower die, wherein the upper die comprises an upper die seat, an upper pad is fixedly installed below the upper die seat, and the upper die also comprises an upper stripping plate, which is elastically connected to the upper pad; the lower die comprises a lower die seat, a lower pad is provided on the lower die seat, a lower template is fixedly installed on the lower pad, a side cutting knife block is provided on the opposite side of the lower template, the side cutting knife block is slidably installed with the lower pad, the side cutting knife block is elastically connected with the lower pad, a lower cover plate is installed on the upper part of the side cutting knife block, and the lower cover plate is connected to the lower The pad is fixedly installed, and a slider is slidably installed on the lower template. The slider is elastically connected to the lower pad, and the side of the slider close to the lower cover plate is adaptively matched with the lower cover plate. The side cutting knife block is shear-matched with the slider. A swing cutting knife block is installed on the side of the side cutting knife block. One end of the swing cutting knife block is rotatably installed with the side cutting knife block, and the other end of the swing cutting knife block is a swinging part. A first driving structure that drives the swing cutting knife block to rotate inward is provided on the opposite side of the swinging part. A cutting part is provided in the middle of the swing cutting knife block, and the cutting part is shear-matched with the slider. The slider and the side cutting knife block are driven and matched with the upper mold.

[0007] Preferably, a first shear block is installed on the side of the lower cover plate, the side of the first shear block is slidably matched with the lower cover plate, the bottom surface of the first shear block is fixedly installed with the side cutting knife block, the upper part of the side of the lower cover plate is convex to form a convex part, the lower surface of the convex part is slidably matched with the upper surface of the first shear block, a second shear block is fixedly installed on the slider, the first shear block is shear-matched with the second shear block, the upper part of the side of the lower cover plate close to the slider is a rounded structure, the upper surface of the first shear block is not higher than the rounded structure of the lower cover plate, the upper surface of the first shear block is not lower than the rounded structure of the lower cover plate, and the side of the second shear block close to the lower cover plate is adaptively matched with the lower cover plate. The present invention can set different cutting mechanisms on both sides of the mold to cut the R angles of different directions on the workpiece. Through the cooperation of the first shear block and the second shear block, the R angle of the processed workpiece can be cut at one time without too many knife gaps.

[0008] Preferably, the upper surface of the swing cutter block is flush with the upper surface of the side cutter block, and a receiving groove for accommodating the swing part is provided on the lower template on the opposite side of the swing cutter block. The first driving structure is a driving part of the receiving groove notch, and the driving part is a rounded structure. The end of the swing part is provided with a first inclined surface, and the first inclined surface corresponds to the position of the driving part. A spring column is provided on the opposite side of the driving part, and the elastic head on the spring column is located in the receiving groove. When the present invention is working, the slider and the side cutter block move towards each other under the drive of the upper mold. After the first inclined surface on the swing part contacts the driving part, the swing cutter block generates an inward rotation movement, and cooperates with the slider to start from the R angle to the side and inward swing cutting, and then the side cutter block contacts the slider, and starts to cut from the cutting opening cut by the R angle side cutter block to the other side, thereby completing the cutting of the R angle, so that the edge of the processed workpiece has no knife gap, and the shape is beautiful; after cutting, the side cutter block retreats, and the swing cutter block recovers under the action of the spring column, and can directly carry out the next processing, which is convenient for continuous operation.

[0009] Preferably, a cylindrical head is provided at one end of the swing cutter block, and a matching portion that adaptably matches the cylindrical head is provided on the side cutter block, the matching portion is a cylindrical hole or groove structure, and a swing opening is provided on the side of the matching portion close to the lower template, the swing opening gradually widens toward the lower template, and the minimum width of the swing opening is smaller than the diameter of the matching portion; a groove is provided between the cutting portion and the cylindrical head, and when the swing cutter block rotates to the inner limit position, the blade of the side cutter block is located inside the groove. The provision of the groove is conducive to the side cutter block and the swing cutter block to connect and start cutting.

[0010] Preferably, the blade of the side cutting knife block is an arc-shaped structure with a depression in the middle, so that a shear fit is formed between the side cutting knife block and the slider, and cutting is performed inward from the edges on both sides of the workpiece, which facilitates cutting.

[0011] Preferably, an upper backing plate is fixedly installed above the upper stripping plate, and the upper backing plate is connected to the upper die seat by a nitrogen spring. A slideway penetrating the upper and lower surfaces of the side cutting knife block is provided in the middle of the side cutting knife block, and a connecting block is installed in the slideway, and the connecting block slides with the slideway, and the connecting block fixedly connects the lower cover plate and the lower pad. The upper stripping plate cooperates with the lower cover plate to fix the workpiece, and the side cutting knife block slides to cut the workpiece.

[0012] Preferably, the first upper insert is fixedly installed on the upper pad, and the second inclined surface is provided at the lower end of the first upper insert, and a driving block is fixedly installed on the side cutting knife block, the driving block is located at the side of the side cutting knife block away from the lower template, and a third inclined surface is provided on the upper part of the driving block, and the second inclined surface corresponds to the third inclined surface up and down, and a first leaning block is provided on the side of the driving block away from the side cutting knife block, and the first leaning block is fixedly installed on the lower pad, and the side of the first leaning block close to the driving block is coplanar with the side of the first upper insert away from the side cutting knife block; a second upper insert is also installed on the upper pad, the second upper insert is located on the opposite side of the first upper insert, and a fourth inclined surface is provided at the lower end of the second upper insert, and a fifth inclined surface is provided on the slider, and the fifth inclined surface corresponds to the fourth inclined surface up and down, and a second leaning block is provided on the side of the slider away from the lower cover plate, and the second leaning block is fixedly installed on the lower die seat, and the side of the second leaning block close to the side cutting knife block is coplanar with the side of the second upper insert away from the side cutting knife block. The first upper inserting knife and the second upper inserting knife serve as the driving of the slide block and the side cutting knife block, and also serve as the limiting structure of the slide block and the side cutting knife block, and the design is reasonable and ingenious.

[0013] Preferably, a first pull rod is fixedly installed on the side of the side cutting knife block, a third support block is fixedly installed on the side of the side cutting knife block away from the slider, the first pull rod passes through the third support block and slides with the third support block, a first retaining ring is provided at the end of the first pull rod away from the side cutting knife block, a first spring is sleeved on the first pull rod, and the first spring is located between the first retaining ring and the third support block; a second pull rod is fixedly installed on one end of the slider, the second pull rod passes through the second support block and slides with the second support block, a second retaining ring is provided at the end of the second pull rod away from the slider, a second spring is sleeved on the second pull rod, and the second spring is located between the second retaining ring and the second support block. When the upper mold moves upward, the slider and the side cutting knife block are restored under the action of the first spring and the second spring, and the second processing can be directly carried out, which is convenient for continuous operation.

[0014] Preferably, guide blocks are fixedly installed on both sides of the sliding direction of the side cutting knife block, the guide blocks are slidably matched with the side surfaces of the side cutting knife block, a pressure plate is provided on the guide blocks, and the lower surface of the pressure plate is slidably matched with the upper surface of the side of the side cutting knife block; guide blocks are fixedly installed on both sides of the sliding direction of the slider, a pressure plate is provided above the guide blocks, the lower protrusions on the two side surfaces of the sliding direction of the slider form a guide part, the upper surface of the guide part is slidably matched with the lower surface of the pressure plate, and the side surface of the guide part is slidably matched with the guide block. The freedom of movement of the slider and the side cutting knife block is fully limited to avoid the slider and the side cutting knife block from moving in the up and down directions and perpendicular to the sliding direction during the operation, so as to ensure the stable and reliable cutting process.

[0015] Preferably, the lower die base and the lower pad are provided with waste holes for passing waste, and the waste holes are located at the corresponding positions of the cutting positions of the side cutting knife blocks, so as to facilitate timely collection of waste.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] 1. When the composite mechanism with R-angle trimming, side cutting and swing cutting involved in the present invention cuts the R-angle workpiece, the swing cutting knife block starts cutting from the R angle and swings inward, and then the side cutting knife block is connected with the cutting starting point of the swing cutting knife block, and the other side edge is cut off from the R angle, thereby completing the cutting of the entire R angle, and there is no knife connection gap, which makes the product appearance beautiful and greatly improves the efficiency of R-angle cutting of the workpiece, so that there is no need to design and manufacture multiple sets of molds, making production convenient and efficient.

[0018] 2. In the present invention, the swing cutter block cooperates with the side cutter block to perform cutting at multiple angles from the R angle to both sides, so that the force on the workpiece is uniform and controllable, and deformation is not easy to occur.

[0019] 3. The present invention provides a first shear block and a second shear block at one end of the slider away from the swing cutter block, which can cooperate with the swing cutter block to complete the cutting of R angles in different directions on both sides of the workpiece, such as the R angle in the plane direction and the R angle in the vertical direction; compared with the traditional cutting method, the R angle cut by the first shear block and the second shear block simplifies the product process, reduces the tool connection gap caused by multiple tool connection positions, improves product quality, saves manufacturing costs, and makes the appearance beautiful.

[0020] 4. The present invention has a compact structure, and its components operate stably and orderly during operation, so it is reliable to use and suitable for continuous processing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of a composite mechanism for performing R-angle cutting, side cutting and swing cutting simultaneously according to the present invention;

[0022] Figure 2 It is a top view of a composite mechanism for performing R-angle cutting, side cutting and swing cutting simultaneously according to the present invention;

[0023] Figure 3 yes Figure 2 Sectional view at the middle BB;

[0024] Figure 4 This is a front view of the present invention in which the upper die and the lower die are in a closed state and some parts are hidden;

[0025] Figure 5 This is a front view of the present invention with the upper die and the lower die opened and some parts hidden;

[0026] Figure 6 It is a top view of the present invention in which the upper mold and the lower mold are in a closed state and some parts are hidden;

[0027] Figure 7 yes Figure 6 A partial enlarged view of point C in the middle;

[0028] Figure 8 It is a top view of the present invention with the upper die and the lower die opened and with some parts hidden;

[0029] Fig. 9 yes Figure 1 A partial enlarged view of the middle A;

[0030] Fig.10 It is a three-dimensional diagram of the present invention after hiding some parts;

[0031] Fig.11 It is an exemplary schematic diagram of a workpiece processed by the present invention.

[0032] Illustrations: 1. Upper die seat, 2. Upper pad, 3. Nitrogen spring, 4. First upper insert, 41. Second inclined plane, 5. Second upper insert, 51. Fourth inclined plane, 6. Upper backing plate, 7. Upper stripping plate, 8. Lower cover plate, 81. Raised portion, 82. Rounded corner structure, 9. Slider, 91. Fifth inclined plane, 10. Lower template, 11. Side cutting block, 111. Slide, 112. Blade, 113. Swinging mouth, 114. Matching portion, 12. Lower pad, 13. Lower die seat, 14. Second support block, 15. Second pull rod, 151. Second retaining ring, 16. Second spring, 17. First pull rod , 171, the first retaining ring, 18, the first spring, 19, the second shear block, 20, the first shear block, 21, the driving block, 211, the third inclined plane, 22, the waste hole, 23, the connecting block, 24, the third support block, 25, the second support block, 26, the spring column, 261, the elastic head, 27, the swing cutter block, 271, the swing part, 272, the first inclined plane, 273, the cutting part, 274, the groove, 275, the cylindrical head, 28, the guide block, 29, the pressure plate, 30, the workpiece, 31, the waste, 32, the guide block, 33, the pressure plate, 34, the first cutting point, 35, the second cutting point. DETAILED DESCRIPTION

[0033] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0034] See also Figures 1 to 10 The present invention relates to a composite mechanism for performing R-angle trimming, side trimming and swing trimming simultaneously, which comprises an upper die and a lower die, wherein the upper die comprises an upper die seat 1, an upper pad 2 is fixedly mounted below the upper die seat 1, and the upper die further comprises an upper stripping plate 7, which is elastically connected to the upper pad 2; the lower die comprises a lower die seat 13, a lower pad 12 is provided on the lower die seat 13, a lower template 10 is fixedly mounted on the lower template 12, a side cutting knife block 11 is provided on the opposite side of the lower template 10, the side cutting knife block 11 is slidably mounted with the lower pad 12, the side cutting knife block 11 is elastically connected with the lower pad 12, a lower cover plate 8 is mounted on the upper part of the side cutting knife block 11, the lower cover plate 8 is fixedly mounted with the lower pad 12, a slider 9 is slidably mounted on the lower template 10, the slider 9 is elastically connected with the lower pad 12, the side of the slider 9 close to the lower cover plate 8 is adaptively matched with the lower cover plate 8, and the side cutting knife block 11 is shear-matched with the slider 9; please refer to Figures 6-8 A swing cutter block 27 is installed on the side of the side cutter block 11. One end of the swing cutter block 27 is rotatably installed with the side cutter block 11. The other end of the swing cutter block 27 is a swing part 271. A first driving structure for driving the swing cutter block 27 to rotate inward is provided on the opposite side of the swing part 271. A cutting part 273 is provided in the middle of the swing cutter block 27. The cutting part 273 is shear-matched with the slider 9. The slider 9 and the side cutter block 11 are driven by the upper mold.

[0035] See also Fig.10 A first shear block 20 is installed on the side of the lower cover 8, and the side of the first shear block 20 slides with the lower cover 8, and the bottom surface of the first shear block 20 is fixedly installed with the side cutting block 11. The upper protrusion of the side of the lower cover 8 forms a protrusion 81, and the lower surface of the protrusion 81 slides with the upper surface of the first shear block 20. A second shear block 19 is fixedly installed on the slider 9, and the first shear block 20 and the second shear block 19 are sheared together. The upper part of the side of the lower cover 8 close to the slider 8 is a rounded structure, and the upper surface of the first shear block 20 is not higher than the rounded structure 82 of the lower cover 8, and the upper surface of the first shear block 20 is not lower than the rounded structure 82 of the lower cover 8. The side of the second shear block 19 close to the lower cover 8 is adaptively matched with the lower cover 8. In this embodiment, different cutting mechanisms are arranged on both sides of the mold to cut the R angles in different directions on the workpiece. Through the cooperation of the first shear block 20 and the second shear block 19, the R angle of the processed workpiece can be cut at one time without too many tool gaps.

[0036] See also Figures 6-8The upper surface of the swinging cutter block 27 is flush with the upper surface of the side cutting cutter block 11. A receiving groove 101 for receiving the swinging part 271 is provided on the lower template on the opposite side of the swinging cutter block 27. The first driving structure is a driving part 102 of the notch of the receiving groove 101. The driving part 102 is a rounded structure. A first inclined surface 272 is provided at the end of the swinging part 271. The first inclined surface 272 corresponds to the position of the driving part 102. A spring column 26 is provided on the opposite side of the driving part 102. The elastic head 261 on the spring column 26 is located in the receiving groove 101. A spring is provided in the spring column. The spring drives the elastic head to have a tendency to move outward all the time. When the side cutting mechanism involved in the present invention is working, the slider 9 and the side cutting knife block 11 move toward each other under the drive of the upper mold. After the first inclined surface 272 on the swinging part 271 contacts the driving part 102, the swing cutting knife block 27 generates an inward rotational movement, and cooperates with the slider 9 to start cutting from the R angle of the workpiece to the side. Then the side cutting knife block 11 contacts the slider and starts cutting from the cutting opening cut by the R angle side cutting knife block to the other side, thereby completing the R angle cutting at one time, so that the edge of the processed workpiece has no knife gap and has a beautiful shape; after cutting, the side cutting knife block retreats, and the swing cutting knife block recovers under the action of the spring column, and can directly proceed to the next processing, which is convenient for continuous operation. A cylindrical head 275 is provided at one end of the swing cutter block 27, and a matching portion 114 is provided on the side cutter block 11 to adaptably match the cylindrical head 275. The matching portion 114 is a cylindrical hole or groove structure. A swing opening 113 is provided on the side of the matching portion 114 close to the lower template 10. The swing opening 113 gradually widens toward the lower template 10, and the minimum width of the swing opening 113 is smaller than the diameter of the matching portion 114. A groove 274 is provided between the cutting portion 273 and the cylindrical head 275. When the swing cutter block 27 rotates to the inner limit position, the blade of the side cutter block 77 is located inside the groove 274. The groove is provided to facilitate the connection between the side cutter block and the swing cutter block to start cutting. The blade 112 of the side cutter block 11 is an arc-shaped structure with a concave middle portion, so that a shear fit is formed between the side cutter block 11 and the slider 9, and cutting is performed inward from the edges on both sides of the workpiece, which is convenient for cutting.

[0037] See also Figures 1 to 8 An upper backing plate 6 is fixedly installed above the upper stripping plate 7, and the upper backing plate 6 is connected to the upper die seat 1 through a nitrogen spring 3. A slideway 111 penetrating the upper and lower surfaces of the side cutting knife block 11 is provided in the middle of the side cutting knife block 11. A connecting block 23 is installed in the slideway 111, and the connecting block 23 slides with the slideway 111. The connecting block 23 is fixedly connected to the lower cover plate 8 and the lower pad 12. The upper stripping plate 7 cooperates with the lower cover plate 8 to fix the workpiece, and the side cutting knife block slides to cut the workpiece.

[0038] See also Figures 1 to 5A first upper inserting knife 4 is fixedly installed on the upper pad 2, and a second inclined surface 41 is provided at the lower end of the first upper inserting knife 4. A driving block 21 is fixedly installed on the side cutting knife block 11, and the driving block 21 is located at the side of the side cutting knife block 11 away from the lower template 10. A third inclined surface 211 is provided on the upper part of the driving block 21, and the second inclined surface 41 corresponds to the third inclined surface 211 up and down. A first leaning block 25 is provided on the side of the driving block 21 away from the side cutting knife block 11, and the first leaning block 25 is fixedly installed on the lower pad 12, and the side of the first leaning block 25 close to the driving block 21 is connected to the first upper The side of the inserting knife 4 away from the side cutting knife block 11 is coplanar; the upper pad 2 is also equipped with a second upper inserting knife 5, which is located on the opposite side of the first upper inserting knife 4, and the lower end of the second upper inserting knife 5 is provided with a fourth inclined surface 51, and the slider 9 is provided with a fifth inclined surface 91, and the fifth inclined surface 91 corresponds to the fourth inclined surface 51 up and down. The side of the slider 9 away from the lower cover plate 8 is provided with a second support block 14, and the second support block 14 is fixedly installed on the lower die seat 13. The side of the second support block 14 close to the side cutting knife block 11 is coplanar with the side of the second upper inserting knife 5 away from the side cutting knife block 11. The first upper inserting knife 4 and the second upper inserting knife 5 serve as the driving of the slider 9 and the side cutting knife block 11, and also as the limiting structure of the slider 9 and the side cutting knife block 11, and the design is reasonable and ingenious.

[0039] See also Figures 4 to 8 The side of the side cutting knife block 11 is fixedly installed with a first tie rod 17, and the side of the side cutting knife block 11 away from the slider 9 is fixedly installed with a third support block 24, the first tie rod 17 passes through the third support block 24 and slides with the third support block 24, and the end of the first tie rod 17 away from the side cutting knife block 11 is provided with a first stop ring 171, and the first tie rod 17 is sleeved with a first spring 18, and the first spring 18 is located between the first stop ring 171 and the third support block 24; the second tie rod 15 is fixedly installed at one end of the slider 9, the second tie rod 15 passes through the second support block 14 and slides with the second support block 14, and the end of the second tie rod 15 away from the slider 9 is provided with a second stop ring 151, and the second tie rod 15 is sleeved with a second spring 16, and the second spring 16 is located between the second stop ring 151 and the second support block 14. When the upper die moves up, the slider 9 and the side cutting knife block 11 are restored under the action of the first spring and the second spring respectively, and can be directly processed for the second time, which is convenient for continuous operation.

[0040] See also Figure 1 , 9~10, guide blocks 28 are fixedly installed on both sides of the sliding direction of the side cutting block 11, and the guide blocks 28 are slidably matched with the side surfaces of the side cutting block 11. A pressure plate 29 is provided on the guide block 28, and the lower surface of the pressure plate 29 is slidably matched with the upper surface of the side of the side cutting block 11; guide blocks 32 are fixedly installed on both sides of the sliding direction of the slider 9, and a pressure plate 33 is provided above the guide block 32. The lower protrusions on the two side surfaces of the sliding direction of the slider 9 form a guide part 92, and the upper surface of the guide part 92 is slidably matched with the lower surface of the pressure plate 32, and the side surface of the guide part 92 is slidably matched with the guide block 32. The freedom of movement of the slider and the side cutting block is fully limited to avoid the slider and the side cutting block from moving in the up and down directions and perpendicular to the sliding direction during the operation, so as to ensure that the cutting process is stable and reliable. Please refer to Figure 3 The lower die base 13 and the lower pad 12 are provided with waste holes 22 for passing waste materials. The waste holes 22 are located at the corresponding position of the cutting position of the side cutting knife block 11, so as to facilitate timely collection of waste materials.

[0041] Fig.11 The workpiece 30 shown needs to be cut off the waste 31, and the following Fig.11 Taking the workpiece shown as an example, the working steps and principles of a composite mechanism for performing R-angle cutting, side cutting and swing cutting simultaneously involved in the present invention are described.

[0042] When the present invention is working, the workpiece 30 is first loaded, the upper stripping plate 7 and the lower cover plate 8 are pressed and fixed to the workpiece, the upper die moves to the lower die, the first upper inserting knife 4 drives the side cutting knife block 11 to move toward the lower die plate 10 through the driving block 24, and the second upper inserting knife 5 is inserted between the slider 9 and the second leaning block 14, so that the slider 9 presses the workpiece to the side of the lower cover plate 8 and fixes it. At this time, the vertical side of the workpiece is located between the swinging portion 271 and the cutting portion 273 of the swinging cutting knife block, the side cutting knife block 11 moves, and the cutting portion 273 of the swinging cutting knife block 27 has There is a certain inclination, the cutting part 273 cooperates with the slider 8 to cut an opening at the first cutting point 34 of the workpiece 30, the swing cutter block 27 continues to move, and after the first inclined surface 272 contacts the driving part 102, the swing cutter block 27 swings and rotates inward, and continues to cooperate with the slider 8 to rotate and swing cut the workpiece on this side. While the swing cutter block 27 rotates and swings, the side cutter block 11 also cooperates with the slider 8 to cut the workpiece on the other side of the first cutting point 34, thereby completing the cutting of the R angle at the first cutting point 34 on the workpiece at one time;

[0043] While the swing cutter block is swinging and cutting the workpiece, the first shear block 20 and the second shear block 19 on the other side also cooperate to complete the cutting; the side cutter block 11 drives the first shear block 20 to move toward the second shear block 19, and cuts the workpiece downward from the second cutting point 35 to cut off the waste material 31; it is necessary to first use a conventional cutting method to cut the side of the workpiece to the second cutting point 35. In the present invention, the first shear block and the second shear block cooperate to cut with at most one cutting notch. Compared with the conventional cutting mechanism, the present invention reduces the cutting notches caused by multiple cutting positions, and simultaneously completes the cutting of R angles in different directions on both sides of the workpiece;

[0044] After the cutting is completed, the upper die moves up, and the side cutting block 11 and the slider 9 return to their initial positions driven by the first spring 18 and the second spring 16 respectively, and the swing cutting block 27 leaves the accommodating groove 101, and the spring column 26 drives the swing cutting block 27 to return to its initial position, and the next cutting can be started after the workpiece is taken out.

[0045] The present invention is described in detail above in conjunction with the embodiments, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A composite mechanism capable of performing R-angle cutting, side cutting and swing cutting simultaneously, characterized in that: It includes an upper die and a lower die, the upper die includes an upper die seat, an upper pad is fixedly installed under the upper die seat, the upper die also includes an upper stripping plate, and the upper stripping plate is elastically connected to the upper pad; the lower die includes a lower die seat, a lower pad is provided on the lower die seat, a lower template is fixedly installed on the lower pad, a side cutting block is provided on the opposite side of the lower template, the side cutting block is slidably installed with the lower pad, the side cutting block is elastically connected with the lower pad, a lower cover is installed on the upper part of the side cutting block, the lower cover is fixedly installed with the lower pad, and the lower template is slidably installed on the lower template. A slider is provided, the slider is elastically connected to the lower pad, the side of the slider close to the lower cover plate is adaptively matched with the lower cover plate, the side cutting knife block is shearing matched with the slider, a swing cutting knife block is installed on the side of the side cutting knife block, one end of the swing cutting knife block is rotatably installed with the side cutting knife block, the other end of the swing cutting knife block is a swinging part, a first driving structure driving the swing cutting knife block to rotate inward is provided on the opposite side of the swinging part, a cutting part is provided in the middle of the swing cutting knife block, the cutting part is shearing matched with the slider, and the slider and the side cutting knife block are drivingly matched with the upper die; When cutting R-angle workpieces, the swing cutter block starts cutting from the R angle and swings inward, and then the side cutter block connects with the cutting starting point of the swing cutter block, and starts cutting the other side from the R angle, thereby completing the cutting of the entire R angle without a knife gap; The upper surface of the swing cutter block is flush with the upper surface of the side cutter block, and a receiving groove for accommodating the swing part is provided on the lower template on the opposite side of the swing cutter block. The first driving structure is a driving part of the notch of the receiving groove, and the driving part is a rounded structure. The end of the swing part is provided with a first inclined surface, and the first inclined surface corresponds to the position of the driving part. A spring column is provided on the opposite side of the driving part, and the elastic head on the spring column is located in the receiving groove; A cylindrical head is provided at one end of the swing cutter block, and a matching portion that adaptably matches the cylindrical head is provided on the side cutter block. The matching portion is a cylindrical hole or groove structure. A swing opening is provided on the side of the matching portion close to the lower template. The swing opening gradually widens toward the lower template, and the minimum width of the swing opening is smaller than the diameter of the matching portion. A groove is provided between the cutting portion and the cylindrical head. When the swing cutter block rotates to the inner limit position, the blade of the side cutter block is located inside the groove. The first upper insert is fixedly installed on the upper pad plate, and a second inclined surface is provided at the lower end of the first upper insert, and a driving block is fixedly installed on the side cutting knife block, and the driving block is located at the side of the side cutting knife block away from the lower template, and a third inclined surface is provided on the upper part of the driving block, and the second inclined surface corresponds to the third inclined surface up and down, and a first leaning block is provided on the side of the driving block away from the side cutting knife block, and the first leaning block is fixedly installed on the lower pad plate, and the side of the first leaning block close to the driving block is coplanar with the side of the first upper insert away from the side cutting knife block; a second upper insert is also installed on the upper pad plate, and the second upper insert is located on the opposite side of the first upper insert, and a fourth inclined surface is provided at the lower end of the second upper insert, and a fifth inclined surface is provided on the slider, and the fifth inclined surface corresponds to the fourth inclined surface up and down, and a second leaning block is provided on the side of the slider away from the lower cover plate, and the second leaning block is fixedly installed on the lower die seat, and the side of the second leaning block close to the side cutting knife block is coplanar with the side of the second upper insert away from the side cutting knife block.

2. The composite mechanism for performing R-angle trimming, side trimming and swing trimming simultaneously according to claim 1, characterized in that: A first shear block is installed on the side of the lower cover, and the side surface of the first shear block is slidably matched with the lower cover, and the bottom surface of the first shear block is fixedly installed with the side cutting block. The upper protrusion of the side surface of the lower cover forms a protrusion, and the lower surface of the protrusion is slidably matched with the upper surface of the first shear block. A second shear block is fixedly installed on the slider, and the first shear block is shear-matched with the second shear block. The upper part of the side surface of the lower cover close to the slider is a rounded structure, the upper surface of the first shear block is not higher than the rounded structure of the lower cover, and the upper surface of the first shear block is not lower than the rounded structure of the lower cover, and the side of the second shear block close to the lower cover is adaptively matched with the lower cover.

3. The composite mechanism for performing R-angle trimming, side trimming and swing trimming simultaneously according to claim 1, characterized in that: The blade of the side cutting knife block is an arc-shaped structure with a depression in the middle.

4. The composite mechanism for performing R-angle trimming, side trimming and swing trimming simultaneously according to claim 1, characterized in that: An upper back plate is fixedly installed above the upper stripping plate, and the upper back plate is connected to the upper die seat by a nitrogen spring. A slideway that runs through the upper and lower surfaces of the side cutting knife block is opened in the middle of the side cutting knife block, and a connecting block is installed in the slideway. The connecting block slides with the slideway, and the connecting block fixedly connects the lower cover plate and the lower pad.

5. The composite mechanism for performing R-angle trimming, side trimming and swing trimming simultaneously according to claim 1, characterized in that: A first pull rod is fixedly installed on the side of the side cutting block, and a third support block is fixedly installed on the side of the side cutting block away from the slider, the first pull rod passes through the third support block and slidably cooperates with the third support block, a first stop ring is provided at the end of the first pull rod away from the side cutting block, a first spring is sleeved on the first pull rod, and the first spring is located between the first stop ring and the third support block; a second pull rod is fixedly installed on one end of the slider, the second pull rod passes through the second support block and slidably cooperates with the second support block, a second stop ring is provided at the end of the second pull rod away from the slider, a second spring is sleeved on the second pull rod, and the second spring is located between the second stop ring and the second support block.

6. The composite mechanism for performing R-angle trimming, side trimming and swing trimming simultaneously according to claim 1, characterized in that: Guide blocks are fixedly installed on both sides of the sliding direction of the side cutting knife block, the guide blocks are slidably matched with the side surfaces of the side cutting knife block, a pressure plate is provided on the guide blocks, and the lower surface of the pressure plate is slidably matched with the upper surface of the side portion of the side cutting knife block; guide blocks are fixedly installed on both sides of the sliding direction of the slider, a pressure plate is provided above the guide blocks, the lower protrusions of the two side surfaces of the sliding direction of the slider form a guide part, the upper surface of the guide part is slidably matched with the lower surface of the pressure plate, and the side surface of the guide part is slidably matched with the guide block.

7. The composite mechanism for performing R-angle trimming, side trimming and swing trimming simultaneously according to claim 1, characterized in that: The lower die seat and the lower pad are provided with waste holes for allowing waste to pass through, and the waste holes are located at positions corresponding to the cutting positions of the side cutting knife blocks.

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