A secondary press device with pressure amplification function

Abstract

The application provides a secondary stamping type pressure equipment with pressure amplification function, and relates to the technical field of stamping. The equipment comprises a main frame, an upper die and a lower die which are sequentially arranged from top to bottom in the main frame, a guide column which is slidably arranged on the top of the main frame, a primary stamping assembly which is arranged between the main frame and the guide column and used for driving the guide column to move up and down, the upper die is slidably connected with the lower end of the guide column, and an elastic member is arranged between the upper die and the guide column and used for preventing the upper die from moving downward relative to the guide column, a secondary stamping assembly is arranged between the guide column and the upper die, and an edge pressing assembly is arranged on the main frame. The edge pressing assembly comprises an edge pressing ring which is slidably connected with the main frame, and a driving member is arranged between the edge pressing ring and the main frame and used for driving the edge pressing ring to move up and down. The secondary stamping type pressure equipment with pressure amplification function provided by the application can not only meet the processing requirements of thick or high-strength plates, but also improve the product quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping, in particular to a secondary stamping type pressure equipment with pressure amplification function. BACKGROUND

[0002] As a key equipment in the field of mechanical stamping forming, the press is mainly used for exerting pressure on the plate to complete the forming process. In the processing process, the plate is first placed on the blank holder and positioned, then the blank holder drives the plate to move upwards and abut against the upper die, then the power device drives the upper die and the blank holder to move downwards together to complete the die closing, and the plate is punched and formed through the cooperation of the upper die and the lower die.

[0003] At present, the press has some deficiencies in actual application:

[0004] Firstly, the stamping force is small, which is difficult to meet the processing requirements of thick or high-strength plates, and the forming is not complete.

[0005] Secondly, the existing press can only perform single stamping, and for plates with high precision requirements and products with complex shapes, the plate is prone to defects such as wrinkles and deformation after single stamping, and the forming quality is poor. SUMMARY

[0006] In view of the above problems, the secondary stamping type pressure equipment with pressure amplification function provided by the present application can not only meet the processing requirements of thick or high-strength plates, but also improve the product forming quality.

[0007] The technical scheme adopted by the present application to solve the technical problems is:

[0008] A secondary stamping type pressure equipment with pressure amplification function, comprising a main frame, wherein the main frame is sequentially provided with an upper die and a lower die from top to bottom, a guide column is slidably arranged on the top of the main frame, a primary stamping assembly for driving the guide column to move up and down is arranged between the main frame and the guide column;

[0009] The upper die is slidably connected with the lower end of the guide column, and an elastic member is arranged between the upper die and the guide column to prevent the upper die from moving downwards relative to the guide column;

[0010] A secondary stamping assembly is arranged between the guide column and the upper die;

[0011] The primary stamping assembly comprises a first stamping component and a first motor;

[0012] The first stamping component comprises a first gear, a second gear and a swing frame, the first gear is connected with the power output shaft of the first motor, the second gear is engaged with the first gear, the swing frame is rotationally connected with the main frame, one end of the swing frame is connected with the guide column through a connecting rod, the upper end of the connecting rod is hinged with the swing frame through a first hinge shaft, the lower end of the connecting rod is hinged with the upper end of the guide column, the other end of the swing frame is connected with the second gear through a crank, a guide piece is arranged on the crank, a guide sliding groove matched with the guide piece is arranged on the swing frame.

[0013] The distance from the inner end of the guide sliding groove to the swing frame rotation axis is greater than the distance from the first hinge shaft to the swing frame rotation axis.

[0014] Further, the first stamping component comprises two swing frames, and the two swing frames are symmetrically arranged.

[0015] Further, the primary stamping component further comprises a second stamping component, the second stamping component is the same in structure as the first stamping component and is symmetrically arranged, the first gear of the first stamping component is located on the inner side of the second gear of the first stamping component, and the first gear of the first stamping component is engaged with the first gear of the second stamping component.

[0016] Further, the swing frame comprises a support shaft rotationally connected with the main frame, the support shaft is fixedly provided with a first driving plate and a second driving plate, the first driving plate is connected with the guide column through a connecting rod, and the guide sliding groove is arranged on the second driving plate.

[0017] Further, the secondary stamping component comprises a secondary stamping support plate arranged on the guide column, the secondary stamping support plate is provided with a cam and a second motor for driving the cam to rotate, and the secondary stamping support plate is provided with an avoiding hole for avoiding the cam.

[0018] Further, the guide pillar comprises a first shaft section and a second shaft section from top to bottom, and the diameter of the first shaft section is larger than that of the second shaft section, a first step surface is formed between the first shaft section and the second shaft section, the upper die is provided with a mounting hole, the mounting hole comprises a first hole section and a second hole section from top to bottom, and the diameter of the first hole section is smaller than that of the second hole section, a second step surface is formed between the first hole section and the second hole section, the first hole section and the second shaft section form a guide fit, a baffle is arranged on the guide pillar in the second hole section, the elastic member is a first spring sleeved on the guide pillar, the upper end of the first spring abuts against the second step surface, and the lower end of the first spring abuts against the baffle.

[0019] Further, the upper die comprises a slider and a die from top to bottom, the die is fixedly connected with the slider in a detachable manner, and the mounting hole is arranged on the slider and penetrates through the slider.

[0020] Further, the main frame is provided with a side pressing device, the side pressing device comprises a side pressing ring in sliding connection with the main frame, and a driving member for driving the side pressing ring to move up and down is arranged between the side pressing ring and the main frame.

[0021] Further, the main frame comprises a top frame body and two standing columns located at two ends of the top frame body, a workbench is arranged below the top frame body between the two standing columns, a plurality of guide rods are arranged on the side pressing ring, the lower ends of the guide rods are connected with a push-up plate after penetrating through the workbench, a guide hole matched with the guide rods is arranged on the workbench, and the driving member is an oil cylinder arranged between the push-up plate and the workbench.

[0022] Further, a plurality of positioning assemblies are arranged on the side pressing ring, when the plate is placed on the side pressing ring, the plurality of positioning assemblies limit the freedom degree of horizontal movement of the plate in the horizontal plane, a mounting groove is arranged on the outer side surface of the side pressing ring and penetrates through the side pressing ring upwards, the positioning assembly comprises an adjusting block located in the mounting groove, a second spring is arranged between the adjusting block and the inner side wall of the mounting groove, a fixing frame is arranged on the side of the adjusting block away from the inner side wall of the mounting groove, the fixing frame is fixedly connected with the side of the side pressing ring in a detachable manner, an adjusting stud is arranged on the fixing frame, the inner end of the adjusting stud abuts against the adjusting block, a positioning block capable of sliding up and down relative to the adjusting block is arranged on the adjusting block, and a third spring for preventing the positioning block from moving downward relative to the adjusting block is arranged between the adjusting block and the positioning block.

[0023] The beneficial effects of the present application are:

[0024] 1、The secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application can increase the driving force of the first motor through the principle of lever, and can effectively increase the stamping force without increasing the power of the first motor, thereby meeting the processing requirements of thicker or high-strength plate materials, and solving the problem of incomplete forming caused by small stamping force of the existing press.

[0025] 2、The secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application can perform secondary stamping on the basis of primary stamping through the second motor and the cam, can adapt to the processing requirements of products with high precision requirements or complex shapes, can reduce the probability of defects such as wrinkles and deformation of the plate material after processing, and can improve the forming quality and the qualified rate of the products. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0027] Figure 2 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0028] Figure 3 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application; Figure 2 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0029] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0030] Figure 5 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0031] Figure 6 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application; Figure 5 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0032] Figure 7 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application; Figure 6 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0033] Figure 8 The figure is a schematic diagram of the structure of the secondary stamping part;

[0034] Figure 9 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0035] Figure 10 The figure is a schematic diagram of the three-dimensional structure of the secondary stamping type pressure equipment with pressure amplification function provided by the embodiment of the present application;

[0036] Figure 11 Schematic view of the three-dimensional structure of the edge pressing part;

[0037] Figure 12 Schematic view of the three-dimensional structure of the edge pressing part; Figure 11 Schematic view of the three-dimensional structure of the edge pressing part;

[0038] Figure 13 Schematic view of the three-dimensional structure of the edge pressing part;

[0039] Figure 14 Schematic view of the three-dimensional structure of the edge pressing part.

[0040] In the figure: 11, top frame; 111, guide sleeve; 12, stand; 13, workbench; 131, second connecting block; 132, guide hole; 14, upper cover body;

[0041] 2, upper die; 21, sliding block; 211, driving plate; 212, second rib plate; 213, mounting hole; 214, first connecting block; 22, die;

[0042] 3, lower die; 31, second connecting groove;

[0043] 41, guide column; 411, first shaft section; 4111, connecting plate; 412, second shaft section; 413, third shaft section; 42, baffle; 43, locking nut;

[0044] 51, first motor; 521, first gear; 522, second gear; 523, swing frame; 5231, support shaft; 5232, first driving plate; 5233, second driving plate; 5234, guide sliding slot; 524, connecting rod; 5241, first hinged shaft; 5242, second hinged shaft; 525, crank; 5251, roller; 53, first mounting frame; 54, second mounting frame; 55, second rotating shaft; 56, first rotating shaft; 57, first support frame; 58, second support frame;

[0045] 61, secondary stamping support plate; 611, ear plate; 612, first rib plate; 62, cam; 63, second motor; 64, third rotating shaft; 65, first coupling;

[0046] 7, first spring;

[0047] 81, edge pressing ring; 811, guide rod; 812, mounting groove; 8121, limiting boss; 82, push plate; 83, oil cylinder; 84, positioning assembly; 841, adjusting block; 8411, clamping plate; 842, second spring; 843, fixing frame; 844, adjusting stud; 8441, hand wheel; 845, positioning block; 8451, positioning part; 8452, guide part; 8453, positioning surface; 846, third spring;

[0048] 9, plate. Detailed Implementation

[0049] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings. The described embodiments are merely a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the protection scope of this application.

[0050] To facilitate understanding of the specific embodiments of this application, a coordinate system is now defined as follows: Figure 1 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0051] like Figure 1 , Figure 2 and Figure 5 As shown, a secondary stamping press with pressure amplification function includes a main frame. An upper die 2 and a lower die 3 are arranged sequentially from top to bottom within the main frame. A guide post 41 is provided at the top of the main frame, and the guide post 41 is slidably connected to the main frame and can slide up and down relative to the main frame. The upper die 2 is slidably connected to the lower end of the guide post 41, and an elastic element is provided between the upper die 2 and the guide post 41 to prevent the upper die 2 from moving downward relative to the guide post 41. A primary stamping assembly for driving the guide post 41 to move up and down is provided between the main frame and the guide post 41, and a secondary stamping assembly is provided between the guide post 41 and the upper die 2. The lower die 3 is detachably fixed to the main frame and aligned with the upper die 2.

[0052] As one specific implementation method, such as Figure 9 As shown, the main frame in this embodiment includes a top frame 11 and two sections located at the left and right ends of the top frame 11 (according to...). Figure 1 The column 12 (in the coordinate system shown) is fixedly connected to the top frame 11 by welding at its upper end, and is used to support the top frame 11. The top frame 11 is provided with a guide sleeve 111 that cooperates with the guide column 41; for example, the guide sleeve 111 is a linear bearing. A workbench 13 is provided between the two columns 12, below the top frame 11, and both ends of the workbench 13 are fixedly connected to the columns 12 by welding. The top frame 11, columns 12, and workbench 13 together form a rigid closed frame, and the overall structure is stable and reliable.

[0053] like Figure 2 and Figure 4The first stamping part includes a first gear 521, a second gear 522 and a swing frame 523. The first gear 521 is connected with the power output shaft of the first motor 51 and can rotate around its own axis under the driving of the first motor 51. The second gear 522 is engaged with the first gear 521, and the number of teeth of the second gear 522 is greater than that of the first gear 521, so as to amplify the driving force of the first motor 51. For example, the number of teeth of the second gear 522 is twice that of the first gear 521. The swing frame 523 is rotationally connected with the top frame body 11. One end of the swing frame 523 is connected with the guide column 41 through a connecting rod 524. The upper end of the connecting rod 524 is hinged with the swing frame 523 through a first hinge shaft 5241, and the lower end of the connecting rod 524 is hinged with the upper end of the guide column 41 through a second hinge shaft 5242. The other end of the swing frame 523 is connected with the second gear 522 through a crank 525. One end of the crank 525 is connected with the second gear 522, and the crank 525 can rotate synchronously with the second gear 522. The other end of the crank 525 is provided with a guide piece, and the swing frame 523 is provided with a guide sliding groove 5234 matched with the guide piece. The distance from the inner end of the guide sliding groove 5234 (the end close to the rotation axis of the swing frame 523) to the rotation axis of the swing frame 523 is greater than the distance from the first hinge shaft 5241 to the rotation axis of the swing frame 523.

[0054] When the second gear 522 rotates under the driving of the first motor 51 and the first gear 521, the second gear 522 can drive the swing frame 523 to swing up and down through the crank 525, thereby driving the guide column 41 and the upper die 2 to move up and down. Since the distance from the force application point (i.e. the guide sliding groove 5234) to the fulcrum (i.e. the rotation axis of the swing frame 523) is greater than the distance from the load (i.e. the hinge point of the connecting rod 524 and the swing frame 523) to the fulcrum (i.e. the rotation axis of the swing frame 523), it is a force-saving lever, so under the premise of requiring the same stamping force, the force required to be applied at the force application point is smaller, that is, the driving force of the first motor 51 transmitted to the second gear 522 can be amplified through the swing frame 523, thereby increasing the stamping force without increasing the power consumption (i.e. without increasing the power of the first motor 51), so as to adapt to the processing requirements of thicker or high-strength plate materials 9.

[0055] As a specific embodiment, as Figure 3As shown, the guide member in the embodiment is a roller 5251 arranged on the crank 525, and the roller 5251 is located in the guide chute 5234.

[0056] Further, the first stamping component includes two swing frames 523, and the two swing frames 523 are symmetrically arranged with respect to the first gear 521 and the second gear 522. Correspondingly, the two sides of the second gear 522 are provided with the crank 525, and the crank 525 and the swing frame 523 on the same side are connected through the guide member.

[0057] Further, the one-time stamping component further includes a second stamping component, the second stamping component is the same structure as the first stamping component, and is symmetrically arranged. The first gear 521 of the first stamping component is located on the inner side of the second gear 522 of the first stamping component (the side opposite to the first stamping component and the second stamping component is the inner side), and the first gear 521 of the first stamping component is engaged with the first gear 521 of the second stamping component. Correspondingly, the top frame body 11 of the main frame is provided with four guide columns 41 corresponding to the swing frame 523 one by one, and the lower ends of the four guide columns 41 are respectively connected with the four corners of the upper die 2.

[0058] By arranging four guide columns 41, on the one hand, the weight of the upper die 2 can be evenly shared, so as to ensure that the upper die 2 can move up and down smoothly; on the other hand, balanced force can be applied to the upper die 2, so that the stamping force is uniformly applied to the plate 9, and the stamping effect is ensured.

[0059] As a specific embodiment, the second gear 522 of the first punching component is rotatably connected with the top frame body 11 through the first mounting frame 53, and the first gear 521 of the first punching component is arranged on the power output shaft of the first motor 51. The first mounting frame 53 comprises a first bottom plate, two first vertical plates arranged in parallel are arranged on the first bottom plate, and the first bottom plate is fixedly connected with the top frame body 11 in a detachable manner. The second gear 522 of the first punching component is located between the two first vertical plates and is rotatably connected with the first mounting frame 53 through a second rotating shaft 55. The first gear 521 and the second gear 522 of the second punching component are rotatably connected with the top frame body 11 through a second mounting frame 54. The second mounting frame 54 comprises a second bottom plate, two second vertical plates arranged in parallel are arranged on the second bottom plate, and the second bottom plate is fixedly connected with the top frame body 11 in a detachable manner. The first gear 521 and the second gear 522 of the second punching component are located between the two second vertical plates, the first gear 521 of the second punching component is rotatably connected with the second mounting frame 54 through a first rotating shaft 56, and the second gear 522 of the second punching component is rotatably connected with the second mounting frame 54 through the second rotating shaft 55.

[0060] As a specific embodiment, as shown in the drawings, Figure 3 The end of the second rotating shaft 55 is provided with a flat mouth, one end of the crank 525 is provided with a plug hole matched with the cross-sectional shape of the end of the second rotating shaft 55, the end of the second rotating shaft 55 is inserted into the plug hole, and the crank 525 is provided with a first locking screw (not shown in the drawings) for locking the second rotating shaft 55. Preferably, the first locking screw is locked on the flat surface of the flat mouth of the second rotating shaft 55.

[0061] As a specific embodiment, the swing frame 523 comprises a support shaft 5231, the first driving plate 5232 and the second driving plate 5233 are fixedly arranged on the support shaft 5231 by welding, the upper end of the connecting rod 524 is hingedly connected with the end of the first driving plate 5232 through a first hinge shaft 5241, and the guide sliding groove 5234 is arranged at the end of the second driving plate 5233. One end of the support shaft 5231 of the swing frame 523 of the first stamping component is rotatably connected with the first vertical plate of the first mounting frame 53 through a bearing assembly, the other end of the support shaft 5231 of the swing frame 523 of the first stamping component is rotatably connected with the first support frame 57 through a bearing assembly, and the first support frame 57 is fixedly arranged on the top frame body 11 in a detachable manner. One end of the support shaft 5231 of the swing frame 523 of the second stamping component is rotatably connected with the second vertical plate of the second mounting frame 54 through a bearing assembly, the other end of the support shaft 5231 of the swing frame 523 of the second stamping component is rotatably connected with the second support frame 58 through a bearing assembly, and the second support frame 58 is fixedly arranged on the top frame body 11 in a detachable manner.

[0062] As shown in Figure 5 and Figure 6 The secondary stamping component comprises a secondary stamping support plate 61, which is located between the top frame body 11 and the upper die 2 and is fixedly connected with the guide column 41 in a detachable manner. The secondary stamping support plate 61 is provided with a cam 62 and a second motor 63 for driving the cam 62 to rotate, and is provided with a clearance hole for avoiding the cam 62. When the cam 62 rotates under the driving of the second motor 63, it can cooperate with the elastic member to realize the up-down movement of the upper die 2 relative to the guide column 41. That is, when the region corresponding to the push movement angle of the cam 62 is in contact with the upper die 2, the cam 62 can push the upper die 2 to move downward relative to the guide column 41 against the elastic force of the elastic member; when the region corresponding to the far rest angle of the cam 62 is in contact with the upper die 2, the upper die 2 is located at the lowest point relative to the guide column 41 and is in a pressure maintaining state; when the region corresponding to the return movement angle of the cam 62 is in contact with the upper die 2, the upper die 2 moves upward under the action of the elastic recovery force of the elastic member until the upper side of the upper die 2 abuts against the limiting surface of the guide column 41; when the region corresponding to the near rest angle of the cam 62 is in contact with the upper die 2, the upper die 2 is located at the highest point relative to the guide column 41.

[0063] As a specific embodiment, the guide column 41 is provided with a connecting plate 4111 above the upper die 2, the secondary stamping support plate 61 is provided with a connecting hole corresponding to the guide column 41, the guide column 41 is located in the corresponding connecting hole, and the secondary stamping support plate 61 is connected and fixed with the connecting plate 4111 on each guide column 41 through bolts.

[0064] As a specific embodiment, the secondary stamping support plate 61 is provided with an ear plate 611 on both sides of the avoiding hole, a first rib plate 612 is arranged between the ear plate 611 and the secondary stamping support plate 61 on the outer side of the ear plate 611 (the inner side is the side opposite to the two ear plates 611), the cam 62 is located between the two ear plates 611 and is rotationally connected with the ear plate 611 through a third rotating shaft 64, and the power output shaft of the second motor 63 is connected with the third rotating shaft 64 through a first coupling 65.

[0065] Further, the upper die 2 is provided with a driving plate 211 matched with the cam 62, the driving plate 211 is perpendicular to the upper die 2, and a second rib plate 212 is arranged between the driving plate 211 and the upper side of the upper die 2.

[0066] As shown in Figure 7 and Figure 8 The guide column 41 sequentially includes a first shaft section 411 and a second shaft section 412 from top to bottom, the diameter of the first shaft section 411 is greater than that of the second shaft section 412, a first step surface is formed between the first shaft section 411 and the second shaft section 412, that is, a limiting surface of the guide column 41, the upper die 2 is provided with a mounting hole 213 matched with the lower end of the guide column 41, the mounting hole 213 is a stepped hole sequentially including a first hole section and a second hole section from top to bottom, the diameter of the first hole section is smaller than that of the second hole section, and a second step surface is formed between the first hole section and the second hole section, the diameter of the first hole section is equal to that of the second shaft section 412 of the guide column 41, and a guide matching is formed, the guide column 41 is provided with a baffle 42 in the second hole section of the mounting hole 213, the elastic member is a first spring 7 sleeved on the guide column 41, the upper end of the first spring 7 abuts against the second step surface of the mounting hole 213, and the lower end of the first spring 7 abuts against the baffle 42. Preferably, the first spring 7 is a rectangular spring. When the region corresponding to the near rest angle of the cam 62 faces the upper die 2, the upper die 2 abuts against the first step surface of the guide column 41, that is, the limiting surface of the guide column 41, under the elastic supporting force of the first spring 7.

[0067] As a specific embodiment, the upper die 2 in the embodiment comprises a slider 21 and a die 22 from top to bottom, and the die 22 is fixedly connected with the slider 21 in a detachable manner. The mounting hole 213 is arranged on the slider 21 and penetrates the slider 21 in the up-down direction. The baffle 42 is fixedly connected with the guide column 41 in a detachable manner. During installation, the guide column 41 is first vertically inserted into the mounting hole 213, then the first spring 7 and the baffle 42 are sequentially installed from the lower side of the slider 21, and then the die 22 is installed.

[0068] As a specific embodiment, the lower portion of the second shaft section 412 of the guide column 41 in the embodiment is provided with a third shaft section 413, the baffle 42 is provided with a through hole, the third shaft section 413 is connected with the locking nut 43 after penetrating the through hole of the baffle 42, and the third shaft section 413 is provided with external threads matched with the locking nut 43. Under the locking action of the locking nut 43, the baffle 42 is tightly fixed on the stepped surface between the second shaft section 412 and the third shaft section 413.

[0069] As a specific embodiment, the lower side of the slider 21 in the embodiment is provided with a plurality of first connecting blocks 214 in inverted T-shaped cross-section structure, the upper side of the die 22 is provided with a plurality of first connecting grooves corresponding to the first connecting blocks 214 one by one, and the first connecting blocks 214 are located in the corresponding first connecting grooves. The left and right sides of the die 22 are respectively provided with a plurality of second locking screws (not shown in the figure) for tightly pressing the first connecting blocks 214 at both ends, that is, the second locking screw on the left side tightly presses the first connecting block 214 at the leftmost end, and the second locking screw on the right side tightly presses the first connecting block 214 at the rightmost end.

[0070] As a specific embodiment, as shown in Figure 9 and Figure 10 As a specific embodiment, the upper side of the workbench 13 in the embodiment is provided with a plurality of second connecting blocks 131 in T-shaped cross-section structure, the lower side of the lower die 3 is provided with a plurality of second connecting grooves 31 corresponding to the second connecting blocks 131 one by one, and the second connecting blocks 131 are located in the corresponding second connecting grooves 31. The left and right sides of the lower die 3 are respectively provided with a plurality of third locking screws (not shown in the figure) for tightly pressing the second connecting blocks 131 at both ends, that is, the third locking screw on the left side tightly presses the second connecting block 131 at the leftmost end, and the third locking screw on the right side tightly presses the second connecting block 131 at the rightmost end.

[0071] As a specific embodiment, as shown in Figure 2 and Figure 5The main frame is provided with a blank holder.

[0072] As shown in Figure 6 and Figure 11 The blank holder 81 is in sliding connection with the main frame, and a driving member is arranged between the blank holder 81 and the main frame for driving the blank holder 81 to move up and down. Preferably, the inner shape of the blank holder 81 is consistent with the lower mold 3, and when the blank holder 81 is in the lower limit position, the blank holder 81 is sleeved outside the lower mold 3.

[0073] As a specific embodiment, the blank holder 81 is provided with a plurality of guide rods 811, the upper end of the guide rod 811 is fixedly connected with the blank holder 81 by welding, the lower end of the guide rod 811 passes through the workbench 13 and is connected with the push plate 82 in a detachable manner, and the workbench 13 is provided with guide holes 132 matched with the guide rods 811. The driving member is an oil cylinder 83 arranged between the push plate 82 and the workbench 13, the cylinder body of the oil cylinder 83 is fixedly connected with the push plate 82 in a detachable manner, and the rod end of the piston rod of the oil cylinder 83 is fixedly connected with the workbench 13 in a detachable manner.

[0074] As a specific embodiment, the blank holder 81 is provided with four guide rods 811, and the four guide rods 811 are respectively located at the four corners of the workbench 13.

[0075] Further, as shown in Figure 11 The blank holder 81 is provided with a plurality of positioning assemblies 84, and when the plate 9 is placed on the blank holder 81, the plurality of positioning assemblies 84 limit the horizontal movement freedom of the plate 9 in the horizontal plane.

[0076] As a specific embodiment, the blank holder 81 is in a square structure, two positioning assemblies 84 are arranged on each side of the blank holder 81, and the four positioning assemblies 84 located on opposite sides are aligned two by two.

[0077] As shown in Figure 12 and Figure 13As shown, the outer side of the blank holder 81 is provided with a mounting groove 812 which penetrates the blank holder 81 upwardly. The positioning assembly 84 comprises an adjusting block 841 located in the mounting groove 812, and the two width-directional sides of the adjusting block 841 respectively abut the two width-directional sides of the mounting groove 812. A second spring 842 is arranged between the adjusting block 841 and the inner side wall of the mounting groove 812. A fixing frame 843 is arranged on the side of the adjusting block 841 which is away from the inner side wall of the mounting groove 812, and the fixing frame 843 is detachably fixedly connected with the side of the blank holder 81. An adjusting stud 844 is arranged on the fixing frame 843, and a hand wheel 8441 is arranged on the outer end of the adjusting stud 844. The inner end of the adjusting stud 844 abuts against the adjusting block 841. A positioning block 845 which can slide up and down relative to the adjusting block 841 is arranged on the adjusting block 841. A third spring 846 is arranged between the adjusting block 841 and the positioning block 845 to prevent the positioning block 845 from moving downward relative to the adjusting block 841. Under the elastic supporting force of the third spring 846, the upper end surface of the positioning block 845 is located above the upper end surface of the blank holder 81. When the adjusting stud 844 is rotated, the position of the adjusting block 841 can be adjusted, so that the adjusting block 841 approaches or moves away from the inside of the blank holder 81, and then the positioning block 845 approaches or moves away from the inside of the blank holder 81, so as to adapt to the size of the plate 9.

[0078] As a specific embodiment, as shown in the drawings, Figure 14 As shown, the positioning block 845 comprises a positioning portion 8451, and the outer side of the lower side of the positioning portion 8451 (the side which is away from the positioning surface 8453 of the positioning portion 8451 is the outer side) is provided with a guide portion 8452 which has a T-shaped structure in cross section. The adjusting block 841 is provided with a guide groove which penetrates the adjusting block 841 in the vertical direction, and the guide portion 8452 is inserted into the guide groove and forms a guide fit with the guide groove. The third spring 846 is located on the inner side of the guide portion 8452 (the side which is close to the positioning surface 8453 of the positioning portion 8451 is the inner side), and the lower side of the positioning portion 8451 is provided with a first limiting groove which has a ring structure and is used for accommodating the upper end portion of the third spring 846. The upper side of the adjusting block 841 is provided with a second limiting groove which has a ring structure and is used for accommodating the lower end portion of the third spring 846.

[0079] Further, a guide groove penetrating through the adjusting block 841 outwardly and forming an opening cooperates with the guide portion 8452, and the outer side surface of the guide portion 8452 is flush with the outer side surface of the adjusting block 841. In order to avoid the adjusting stud 844 being simultaneously pressed against the positioning block 845 and the adjusting block 841, thereby hindering the up-and-down sliding of the positioning block 845 relative to the adjusting block 841, a clamping plate 8411 is arranged on the outer side surface of the adjusting block 841, the cross section of the clamping plate 8411 is in the shape of a U with the opening facing the side of the adjusting block 841, and the two ends of the clamping plate 8411 are fixedly connected with the adjusting block 841 by welding.

[0080] As a specific embodiment, the fixing frame 843 comprises a web plate, the two sides of the web plate are respectively provided with a wing plate extending to the side of the edge ring 81 perpendicularly to the web plate, the end of the wing plate is provided with a mounting plate extending to the outer side (with the side opposite to the two wing plates as the inner side) perpendicularly to the wing plate, the mounting groove 812 is located between the two wing plates of the fixing frame 843, and the mounting plate is fixedly connected with the side surface of the edge ring 81 by screws.

[0081] Further, the adjusting block 841 is provided with a third limiting groove in the shape of a ring for accommodating the second spring 842, and the inner side wall of the mounting groove 812 is provided with a limiting boss 8121 in the shape of a cylinder, the limiting boss 8121 is inserted into the second spring 842.

[0082] Further, as shown in Figure 1 the upper end of the main frame is provided with an upper cover 14, the upper cover 14 is fixedly connected with the main frame in a detachable manner, and the primary stamping part is located in the upper cover 14.

[0083] An operation method of a secondary stamping type pressure device with pressure amplification function, comprising the following steps:

[0084] First, according to the size of the plate 9 to be processed, the position of the positioning block 845 in the positioning assembly 84 is adjusted.

[0085] Second, the plate 9 to be processed is placed on the upper side surface of the edge ring 81, as shown in Figure 13 at this time, the positioning surface 8453 of the positioning block 845 abuts against the plate 9, thereby realizing the positioning of the plate 9.

[0086] Thirdly, the piston rod of the oil cylinder 83 is retracted, so that the pressure ring 81 and the plate 9 are moved upward together by the push plate 82 and the guide rod 811. When the positioning block 845 abuts against the upper die 2, the third spring 846 is compressed under the pushing action of the oil cylinder 83, and the positioning block 845 moves downward relative to the pressure ring 81 until the upper side of the positioning block 845 is flush with the upper side of the plate 9, and at this time the plate 9 is also pressed against the upper die 2.

[0087] Fourthly, the first motor 51 is started, so that the upper die 2, the plate 9 and the pressure ring 81 are moved downward together to complete a stamping. After the completion of the stamping, the first motor 51 stops working and the guide column 41 is maintained at the lower limit position. Then the second motor 63 is actuated to move the upper die 2, the plate 9 and the pressure ring 81 downward together to complete a secondary stamping.

[0088] In the process of the primary stamping and the secondary stamping, the plate 9 is always in contact with the upper die 2, and the piston rod of the oil cylinder 83 for driving the pressure ring 81 is passively extended.

[0089] Fifthly, when the cam 62 enters the return phase (i.e. the region corresponding to the return motion angle of the cam 62 is in contact with the upper die 2), the first motor 51 is started, and at this time the first motor 51 and the second motor 63 move the upper die 2 upward together to reset. Thus, a complete stamping process is completed.

[0090] Embodiment Two

[0091] The guide is a guide block in sliding cooperation with the guide sliding groove 5234, and the side of the guide block facing the crank 525 is provided with a connecting shaft, and the connecting shaft is rotatably connected with the crank 525 through a bearing assembly. The remaining structures are the same as those of Embodiment One.

[0092] Embodiment Three

[0093] The first gear 521 of the first stamping component is located between the two first vertical plates and is rotatably connected with the first mounting frame 53 through a drive shaft. The power output shaft of the first motor 51 is connected with the drive shaft through a second coupling. The remaining structures are the same as those of Embodiment One.

[0094] The other embodiments obtained by the skilled in the art through the means of combining, splitting, recombining and the like of the embodiments provided in the present application without going beyond the protection scope of the present application.

[0095] The above detailed description of the embodiments of the present application, the purpose, technical solutions and beneficial effects of the embodiments of the present application have been described in detail, and the above is only a specific embodiment of the present application, and is not used to limit the protection scope of the embodiments of the present application, that is, on the basis of the embodiments of the present application, any modification, equivalent replacement, improvement, etc. should be included in the protection scope of the embodiments of the present application.

Claims

1. A secondary stamping pressure device with pressure amplification function, comprising a main frame, wherein an upper die (2) and a lower die (3) are arranged sequentially from top to bottom within the main frame, characterized in that: A guide post (41) is slidably provided on the top of the main frame, and a primary stamping assembly for driving the guide post (41) to move up and down is provided between the main frame and the guide post (41). The upper mold (2) is slidably connected to the lower end of the guide post (41), and an elastic element is provided between the upper mold (2) and the guide post (41) to prevent the upper mold (2) from moving downward relative to the guide post (41); A secondary stamping assembly is provided between the guide post (41) and the upper die (2); The primary stamping assembly includes a first stamping component and a first motor (51); The first stamping component includes a first gear (521), a second gear (522), and a swing frame (523). The first gear (521) is connected to the power output shaft of the first motor (51). The second gear (522) meshes with the first gear (521). The swing frame (523) is rotatably connected to the main frame. One end of the swing frame (523) is connected to the guide post (41) through a connecting rod (524). The upper end of the connecting rod (524) is hinged to the swing frame (523) through a first hinge shaft (5241). The lower end of the connecting rod (524) is hinged to the guide post (41). The other end of the swing frame (523) is connected to the second gear (522) through a crank (525). A guide is provided on the crank (525). A guide groove (5234) that cooperates with the guide is provided on the swing frame (523). The distance from the inner end of the guide groove (5234) to the rotation axis of the swing frame (523) is greater than the distance from the first hinge shaft (5241) to the rotation axis of the swing frame (523); The first stamping assembly further includes a second stamping component, which has the same structure as the first stamping component and is arranged symmetrically. The first gear (521) of the first stamping component is located inside the second gear (522) of the first stamping component, and the first gear (521) of the first stamping component meshes with the first gear (521) of the second stamping component. The second gear (522) of the first stamping component is rotatably connected to the top frame (11) via the first mounting bracket (53). The first mounting bracket (53) includes a first base plate, on which two parallel first upright plates are provided. The second gear (522) of the first stamping component is located between the two first upright plates. The first gear (521) and the second gear (522) of the second stamping component are both rotatably connected to the top frame (11) via the second mounting bracket (54). The second mounting bracket (54) includes a second base plate, on which two parallel second upright plates are provided. The first gear (521) and the second gear (522) of the second stamping component are both located between the two second upright plates. The swing frame (523) includes a support shaft (5231) rotatably connected to the main frame. A first drive plate (5232) and a second drive plate (5233) are provided on the support shaft (5231). The first drive plate (5232) is connected to the guide column (41) through a connecting rod (524). The guide groove (5234) is provided on the second drive plate (5233). One end of the support shaft (5231) of the swing frame (523) of the first stamping component is rotatably connected to the first upright plate of the first mounting frame (53) through a bearing assembly, and the other end of the support shaft (5231) of the swing frame (523) of the first stamping component is rotatably connected to the first support frame (57) through a bearing assembly. One end of the support shaft (5231) of the swing frame (523) of the second stamping component is rotatably connected to the second upright plate of the second mounting frame (54) through a bearing assembly, and the other end of the support shaft (5231) of the swing frame (523) of the second stamping component is rotatably connected to the second support frame (58) through a bearing assembly. The secondary stamping assembly includes a secondary stamping support plate (61) disposed on the guide post (41), the secondary stamping support plate (61) is provided with a cam (62) and a second motor (63) for driving the cam (62) to rotate, and the secondary stamping support plate (61) is provided with a clearance hole for avoiding the cam (62). The guide post (41) includes a first shaft segment (411) and a second shaft segment (412) from top to bottom. The diameter of the first shaft segment (411) is larger than the diameter of the second shaft segment (412). A first step surface is formed between the first shaft segment (411) and the second shaft segment (412). The upper mold (2) is provided with a mounting hole (213). The mounting hole (213) includes a first hole segment and a second hole segment from top to bottom. The diameter of the first hole segment is smaller than the diameter of the second hole segment. A second step surface is formed between the first hole segment and the second shaft segment (412). The first hole segment and the second shaft segment (412) form a guiding fit. A baffle (42) is provided on the guide post (41) inside the second hole segment. The elastic element is a first spring (7) sleeved on the guide post (41). The upper end of the first spring (7) abuts against the second step surface, and the lower end of the first spring (7) abuts against the baffle (42). The upper mold (2) includes a slider (21) and a mold (22) from top to bottom. The mold (22) is fixedly connected to the slider (21) in a detachable manner. The mounting hole (213) is provided on the slider (21) and passes through the slider (21). The main frame is provided with a pressing edge assembly, which includes a pressing edge ring (81) that is slidably connected to the main frame. A driving member for driving the pressing edge ring (81) to move up and down is provided between the pressing edge ring (81) and the main frame. The pressing ring (81) is provided with a plurality of positioning components (84). When the plate (9) is placed on the pressing ring (81), the plurality of positioning components (84) restrict the plate (9)'s freedom of horizontal movement in the horizontal plane. The outer side of the pressing ring (81) is provided with a mounting groove (812), and the mounting groove (812) extends upward through the pressing ring (81). The positioning component (84) includes an adjusting block (841) located in the mounting groove (812). A second spring (842) is provided between the adjusting block (841) and the inner sidewall of the mounting groove (812). The back of the adjusting block (841) is... A fixing bracket (843) is provided on one side of the inner wall of the mounting groove (812). The fixing bracket (843) is fixedly connected to the side of the pressure ring (81) in a detachable manner. An adjusting stud (844) is provided on the fixing bracket (843). The inner end of the adjusting stud (844) abuts against the adjusting block (841). A positioning block (845) is provided on the adjusting block (841) and can slide up and down relative to the adjusting block (841). A third spring (846) is provided between the adjusting block (841) and the positioning block (845) to prevent the positioning block (845) from moving downward relative to the adjusting block (841).

2. The secondary stamping pressure device with pressure amplification function according to claim 1, characterized in that: The first stamping component includes two swing frames (523), and the two swing frames (523) are arranged symmetrically.

3. The secondary stamping pressure device with pressure amplification function according to claim 1, characterized in that: The main frame includes a top frame (11) and columns (12) located at both ends of the top frame (11). A workbench (13) is provided between the two columns (12) and below the top frame (11). Several guide rods (811) are provided on the pressing ring (81). The lower end of the guide rod (811) passes through the workbench (13) and is connected to the push plate (82). The workbench (13) is provided with guide holes (132) that cooperate with the guide rods (811). The driving component is a hydraulic cylinder (83) located between the push plate (82) and the workbench (13).

Images