Automatic stamping equipment for metal poster frame

Abstract

The invention relates to the technical field of metal stamping, in particular to metal poster frame automatic stamping equipment which comprises a placing plate, a clamping mechanism and an auxiliary mechanism. According to the metal poster frame machining device, a frame part of a metal poster frame is protected through cooperation of the opening set and the clamping set, deformation of the frame part of the metal poster frame due to downward pressing of a stamping knife is reduced, meanwhile, an excess material part and the stamping knife synchronously move downwards through the downward pressing set, the excess material part is protected through the downward pressing set, and the production efficiency is improved. Limiting clamping, opening protection, downward pressing protection and punch forming of the aluminum plate are achieved through single downward pressing driving, and the frame part and the excess material part of the metal poster frame are pushed out at the same time through upward moving driving of the lifting plate. And a worker can conveniently take out the metal poster frame and the excess material part.

Description

Technical Field

[0001] The invention relates to the technical field of metal stamping, in particular to automatic stamping equipment for metal poster frames. Background Art

[0002] A metal poster frame is a framing device used to decorate and protect posters, artworks or photos. Compared with traditional wooden frames, metal poster frames are usually more sturdy and durable. The main material of a metal poster frame is usually an aluminum alloy plate (hereinafter referred to as an aluminum plate). The rectangular aluminum alloy plate is stamped into a circular metal poster frame part and a rectangular residual part through a stamping process. The residual part has a larger area and can be recycled.

[0003] The existing stamping process for metal poster frames is usually that a worker places an aluminum plate on a punch press and performs preliminary positioning of the aluminum plate, and then performs stamping processing on the aluminum plate through the punch press.

[0004] The above-mentioned processing of the metal poster frame has the following problems: 1. In the method of direct stamping by a punch press, the frame part of the metal poster frame is easily deformed due to the punching of the aluminum plate by the punch, thereby reducing the strength of the frame structure. At the same time, the deformation of the frame part of the metal poster frame affects the overall appearance quality of the frame.

[0005] 2. When the punch press directly punches the aluminum plate, the remaining material is prone to deformation due to the downward pressure of the punch, which makes the remaining material unusable for subsequent use, resulting in low material utilization. Summary of the invention

[0006] Based on this, it is necessary to provide a metal poster frame automatic punching equipment to solve the above technical problems.

[0007] The present application provides a metal poster frame automatic punching device, comprising:

[0008] A placement plate, wherein the upper end surface of the placement plate is fixedly provided with four fixed columns distributed in a matrix, and the axes of the fixed columns extend from top to bottom, a lifting plate is slidably arranged between the four fixed columns, two hydraulic cylinders symmetrically distributed left and right are arranged on the placement plate, and the telescopic ends of the hydraulic cylinders are fixedly connected to the lower end surface of the lifting plate, and a sliding column with an axis extending from top to bottom slides through the lifting plate, and the lower end surface of the lifting plate is fixedly provided with punches for stamping aluminum plates through four connecting columns extending from top to bottom through the axes, and the four punches form a closed rectangle, and the upper end surface of the placement plate is provided with a sinking groove in a rectangular shape located below the punch.

[0009] A clamping mechanism is provided between the lifting plate and the placing plate for limiting the clamping of the aluminum plate. An auxiliary mechanism for assisting the stamping process of the aluminum plate is provided between the lifting plate and the placing plate. A pushing group is provided on the placing plate for pushing out the cut metal poster frame.

[0010] The clamping mechanism includes a movable plate, a movable plate is slidably sleeved up and down on the sliding column, a lifting plate is provided with an opening group for opening and protecting the metal poster frame, the upper end surface of the placement plate is provided with four sliding grooves corresponding to the positions of the fixed columns, each of which has a sliding plate slidably arranged in it, a clamping group for centering the aluminum plate is provided between all the sliding plates and the lifting plate, and a pressing group for protecting the residual material during the cutting process is provided on the sliding column.

[0011] According to a favorable embodiment, the clamping group includes a clamping plate, an L-shaped clamping plate is fixedly provided on the upper end surface of the sliding plate, a rectangular plate is slidably sleeved up and down on each of the fixed columns, a spring sleeved on the corresponding fixed column is fixedly provided between the rectangular plate and the lifting plate, and a connecting strip is hingedly connected between the rectangular plate and the corresponding sliding plate.

[0012] According to a preferred embodiment, the expansion group includes a sliding groove, the upper end surface of the movable plate is penetrated by four sliding grooves distributed in a matrix, and the sliding groove extends along the sliding column toward the fixed column, a sliding block is slidingly arranged in the sliding groove, and a spring 2 is fixedly arranged between the sliding block and the inner wall of the corresponding sliding groove on the side close to the sliding column, a transmission bar is fixedly arranged on the lower end surface of the sliding block, the transmission bar is divided into an inclined section and a vertical section from top to bottom, and the inclined section of the transmission bar extends from bottom to top in a direction away from the sliding column, a transmission groove with the same shape as the transmission bar is arranged on the transmission bar, four placement grooves corresponding to the sliding grooves are arranged on the lifting plate, a fixing rod with an axis perpendicular to the sliding column is fixedly arranged in the placement groove, and an L-shaped expansion plate is fixedly arranged on the lower end surface of the transmission bar through a connecting plate.

[0013] According to a favorable embodiment, the pressing group includes a pressing bar, and the lower section of the sliding column is fixedly provided with four pressing bars evenly distributed in the circumference, and a sliding bar parallel to the corresponding punch is slidingly provided on the pressing bar, and a stop plate for blocking the movement of the sliding bar is fixedly provided on the upper end surface of the pressing bar away from the sliding column, and a square plate is slidingly sleeved up and down on the sliding column, and a spring three sleeved on the sliding column is fixedly provided between the square plate and the lifting plate, and a push bar is hingedly connected between the square plate and each sliding bar.

[0014] According to a favorable embodiment, a guide group is commonly provided between the expansion plate and the corresponding punching knife, the guide group includes a guide bar, the punching knife is fixedly provided with two left-right symmetrical guide bars away from the end surface of the sliding column, and guide grooves cooperating with the corresponding guide bars are penetrated through the two sections of the expansion plate, and the guide grooves are divided into isosceles trapezoidal sections and vertical sections from top to bottom, and the two inclined surfaces of the isosceles trapezoidal sections of the guide grooves face the left and right sides respectively, and the two inclined surfaces approach each other from top to bottom.

[0015] According to a favorable embodiment, a limit group is provided on the upper end surface of the sliding plate, and the limit group includes a vertical plate, and the upper end surface of the sliding plate is fixedly provided with a vertical plate, and a fixed plate is fixedly provided on the side of the vertical plate close to the transmission bar, and a rotating rod with an axis extending from top to bottom rotates through the fixed plate, and the upper section of the rotating rod is fixedly provided with a limit bar for preventing the connecting plate from moving upward, and the lower end surface of the fixed plate is fixedly provided with a connecting block, and a spiral spring is fixedly provided between the rotating rod and the connecting block.

[0016] According to a favorable embodiment, the pushing group includes a pulling rod, and the lower end surface of the lifting plate is fixedly provided with three pulling rods with axes extending from top to bottom and respectively located on the left and right sides and the rear side of the sinking groove, and the pulling rods slide up and down and pass through the placement plate, and the lower end surface of the pulling rods is fixedly provided with pulling strips extending in the direction of the sliding column, and the placement plate is slid through with three pushing rods with axes extending from top to bottom and corresponding to the positions of the pulling rods one by one, and the lower end surfaces of the three pushing rods are jointly fixedly provided with a T-shaped plate, and three springs four respectively mounted on the corresponding pushing rods are jointly fixedly provided between the T-shaped plate and the lower end surface of the placement plate.

[0017] According to an advantageous embodiment, a push column with an axis extending from top to bottom is fixedly provided on the upper end surface of the T-shaped plate, and the push column slides through the placement plate.

[0018] In summary, the present invention includes at least one of the following beneficial effects: 1. In the present invention, the frame part of the metal poster frame is protected by the cooperation between the expansion group and the clamping group, thereby reducing the deformation of the frame part of the metal poster frame due to the downward pressure of the punch, and at the same time, the residual material part is moved downward synchronously with the punch through the downward pressure group, and the residual material part is protected by the downward pressure group to avoid the problem of deformation of the residual material part caused by the downward pressure of the punch. In the present invention, the limited clamping, expansion protection, downward pressure protection and stamping of the aluminum plate are realized through a single downward pressure drive, and the frame part and the residual material part of the metal poster frame are driven to be pushed out at the same time by the upward movement of the lifting plate, so that the staff can take out the metal poster frame and the residual material part.

[0019] Second, in the present invention, the four angle parts of the metal poster frame frame part are opened and protected by the opening plates in the opening group during the downward movement of the lifting plate, thereby reducing the deformation of the metal poster frame frame part caused by the downward pressure of the punch, and avoiding the problem of reduced strength of the metal poster frame frame part structure caused by the deformation of the metal poster frame frame part.

[0020] 3. In the present invention, the residual material on the aluminum plate is pressed down by the downward pressing bar, and the square plate pushes the moving bars away from each other during the downward movement of the lifting plate. The moving bars are pushed close to the punching part of the punch to improve the stability of the aluminum plate during the punching process and reduce the deformation of the residual material caused by the downward pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 A schematic three-dimensional structure diagram of a metal poster frame automatic punching device provided according to an embodiment of the present invention is shown.

[0023] Figure 2 A front view of a spreading group, a clamping group and a placement plate provided according to an embodiment of the present invention is shown.

[0024] Figure 3 A partial cross-sectional view of the three-dimensional structure of a pressing group, a limiting group and a sliding plate provided according to an embodiment of the present invention is shown.

[0025] Figure 4 The embodiment of the present invention provides Figure 3 A magnified schematic diagram of the structure in the middle.

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a sinking groove, a sliding column and a lower pressing strip provided according to an embodiment of the present invention is shown.

[0027] Figure 6 A schematic diagram of the three-dimensional structure of a sliding plate, a vertical plate and a spiral spring provided according to an embodiment of the present invention is shown.

[0028] Figure 7 A schematic diagram of the three-dimensional structure of a T-shaped plate, a pulling rod and a lifting plate provided according to an embodiment of the present invention is shown.

[0029] Figure 8 A schematic diagram of the processing process of a metal poster frame provided according to an embodiment of the present invention is shown.

[0030] The above drawings include the following reference numerals:

[0031] 1. Placement plate; 2. Fixed column; 3. Lifting plate; 30. Sliding column; 4. Punch; 40. Sinking groove; 5. Clamping mechanism; 50. Moving plate; 51. Spreading group; 510. Sliding groove; 511. Sliding block; 512. Spring 2; 513. Transmission bar; 514. Transmission groove; 515. Fixed rod; 516. Spreading plate; 52. Sliding plate; 53. Clamping group; 530. Clamping plate; 531. Rectangular plate; 532. Spring 1; 533. Connecting bar; 54. Pressing group; 540 , lower pressure bar; 541, sliding bar; 542, square plate; 543, spring three; 544, pushing bar; 6, auxiliary mechanism; 60, pushing group; 600, pulling rod; 601, pulling bar; 602, T-shaped plate; 603, spring four; 605, pushing column; 606, pushing rod; 61, guiding group; 610, guiding bar; 611, guiding groove; 62, limiting group; 620, vertical plate; 621, fixed plate; 622, rotating rod; 623, limiting bar; 624, spiral spring. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] like Figure 1 , Figure 2 and Figure 5 As shown, an automatic stamping equipment for a metal poster frame comprises: a placing plate 1, a clamping mechanism 5, the upper end surface of the placing plate 1 is fixedly provided with four fixing columns 2 distributed in a matrix, and the axes of the fixing columns 2 extend from top to bottom, a lifting plate 3 is slidingly provided between the four fixing columns 2, and a blocking plate for preventing the lifting plate from continuing to move upward is fixedly provided on the upper end surface of the fixing columns 2, two hydraulic cylinders symmetrically distributed left and right are provided on the placing plate 1, and the telescopic ends of the hydraulic cylinders are fixedly connected to the lower end surface of the lifting plate 3, and a sliding column 30 with an axis extending from top to bottom is slid through the lifting plate 3, and a circular plate is fixedly provided on the upper end surface of the sliding column 30, and a punching knife 4 for stamping an aluminum plate is fixedly provided on the lower end surface of the lifting plate 3 through four connecting columns extending from top to bottom through the axes, and the four punching knives 4 form a closed rectangle, and a sinking groove 40 with a rectangular shape and located below the punching knife 4 is provided on the upper end surface of the placing plate 1.

[0034] A clamping mechanism 5 for limiting the position of the aluminum plate is provided between the lifting plate 3 and the placing plate 1, an auxiliary mechanism 6 for assisting the stamping process of the aluminum plate is provided between the lifting plate 3 and the placing plate 1, and a pushing group 60 for pushing out the cut metal poster frame is provided on the placing plate 1.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the clamping mechanism 5 includes a movable plate 50, and the movable plate 50 is slidably sleeved up and down on the sliding column 30, and an opening group 51 for opening and protecting the metal poster frame is arranged on the lifting plate 3. The upper end surface of the placement plate 1 is provided with four sliding grooves corresponding to the positions of the fixed columns 2, and a sliding plate 52 is slidably arranged in each sliding groove. A clamping group 53 for centering the aluminum plate is arranged between all the sliding plates 52 and the lifting plate 3, and a pressing group 54 for protecting the residual material during the cutting process is arranged on the sliding column 30.

[0036] During work, the staff places the aluminum plate to be stamped on the upper end surface of the placement plate 1, and makes the aluminum plate to be stamped be located under the sliding column 30, and then the hydraulic cylinder works to push the lifting plate 3 to move downward. During the downward movement of the lifting plate 3, the clamping group 53 is first driven to work to clamp the aluminum plate in the center, and the lifting plate 3 continues to move downward, and the opening group 51 works to open and protect the metal poster frame part after stamping on the aluminum plate to prevent the metal poster frame from deforming during the stamping process. Then the lifting plate 3 drives the punching knife 4 to move downward to perform stamping operations on the aluminum plate, and the aluminum plate is stamped into two parts: a metal poster frame and a rectangular residual material. After the stamping process is completed, the hydraulic cylinder works to drive the lifting plate 3 to move upward. During the upward movement of the lifting plate 3, the pushing group 60 works to push the metal poster frame part upward, so that the staff can take out the metal poster frame.

[0037] like Figure 2 and Figure 3 As shown, the clamping group 53 includes a clamping plate 530, an L-shaped clamping plate 530 is fixedly provided on the upper end surface of the sliding plate 52, a rectangular plate 531 is slidably sleeved up and down on each of the fixed columns 2, a spring 532 sleeved on the corresponding fixed column 2 is fixedly provided between the rectangular plate 531 and the lifting plate 3, and a connecting strip 533 is hingedly connected between the rectangular plate 531 and the corresponding sliding plate 52.

[0038] like Figure 2 , Figure 3 and Figure 4As shown, the expansion group 51 includes a sliding groove 510, and the upper end surface of the movable plate 50 is penetrated with four sliding grooves 510 distributed in a matrix, and the sliding groove 510 extends along the sliding column 30 toward the fixed column 2, and a sliding block 511 is slidably arranged in the sliding groove 510, and a spring 2 512 is fixedly arranged between the sliding block 511 and the inner wall of the corresponding sliding groove 510 close to the sliding column 30, and a transmission bar 513 is fixedly arranged on the lower end surface of the sliding block 511, and the transmission bar 513 is divided into an inclined section and a vertical section from top to bottom, and the inclined section of the transmission bar 513 extends from bottom to top in a direction away from the sliding column 30. A transmission groove 514 with the same shape as the transmission bar 513 is provided on the transmission bar 513. Four placement grooves corresponding to the sliding groove 510 are provided on the lifting plate 3. A fixing rod 515 with an axis perpendicular to the sliding column 30 is fixedly set in the placement groove. An L-shaped support plate 516 is fixedly set on the lower end surface of the transmission bar 513 through a connecting plate.

[0039] In the initial state, the spring 1 532 is not compressed and deformed, and each sliding plate 52 is located in a section of the corresponding slide groove away from the sliding column 30. When working, the staff places the aluminum plate to be stamped on the upper end surface of the placement plate 1 and makes the aluminum plate between the four clamping plates 530. Then the hydraulic cylinder drives the lifting plate 3 to move downward. The lifting plate 3 drives the corresponding rectangular plate 531 to move downward through the spring 1 532. The rectangular plate 531 pushes the corresponding sliding plate 52 to move through the connecting strip 533. The sliding plate 52 brings The movable clamping plates 530 move synchronously, so that the four clamping plates 530 all move toward the direction close to the sliding column 30 until the four clamping plates 530 all contact the aluminum plate, and then the clamping plates 530 stop moving and the lifting plate 3 continues to move downward, and the spring 532 is compressed and deformed. The elastic force generated by the deformation of the spring 532 pushes each clamping plate 530 to be close to the aluminum plate, and the clamping and limiting of the aluminum plate is completed through the cooperation between the four clamping plates 530, so that the four circumferential surfaces of the aluminum plate are parallel to the corresponding punching knives 4.

[0040] In the initial state, the upper end surface of the lifting plate 3 contacts the lower end surface of the moving plate 50. Before the opening plate 516 contacts the aluminum plate, the moving plate 50 moves downward synchronously with the lifting plate 3 under the action of its own gravity. After completing the clamping limit of the aluminum plate, the opening plate 516 moves downward until it contacts the aluminum plate. Then, the opening plate 516, the transmission bar 513 and the moving plate 50 stop moving downward, and the lifting plate 3 continues to move downward. The lifting plate 3 drives the fixed rod 515 to move downward synchronously. Through the cooperation between the fixed rod 515 and the inner wall of the inclined section of the corresponding transmission groove 514, the fixed rod 515 pushes the corresponding transmission bar 513 Move in the direction away from the sliding column 30, the transmission bar 513 drives the sliding block 511 to move synchronously, and the spring 2 512 is stretched and deformed until the fixing rod 515 moves to contact the inner wall of the vertical section of the transmission groove 514, and the support plate 516 moves to be close to the frame part of the metal poster frame on the aluminum plate. The frame part of the metal poster frame on the aluminum plate is protected by the four support plates 516 to avoid deformation of the frame part of the metal poster frame caused by the downward pressure of the stamping tool during the stamping process. At the same time, the support of the support plate 516 to avoid deformation of the frame part of the metal poster frame caused by the extrusion of the clamping plate 530.

[0041] like Figure 2 , Figure 3 and Figure 5 As shown, the pressing group 54 includes a pressing bar 540, and the lower section of the sliding column 30 is fixedly provided with four circumferentially evenly distributed pressing bars 540, and the pressing bar 540 is slidingly provided with a sliding bar 541 which is parallel to the corresponding punch 4, and the upper end surface of the pressing bar 540 away from the sliding column 30 is fixedly provided with a stop plate for blocking the movement of the sliding bar 541, and the sliding column 30 is slidably sleeved with a square plate 542, and a spring 543 sleeved on the sliding column 30 is fixedly provided between the square plate 542 and the lifting plate 3, and a push bar 544 is hingedly connected between the square plate 542 and each sliding bar 541.

[0042] During operation, after the internal support of the aluminum plate to be stamped is completed, the lifting plate 3 continues to move downward, and the sliding column 30 moves downward synchronously with the lifting plate 3 under the action of its own gravity. After the sliding column 30 drives the four lower pressing bars 540 to move to the upper end surface of the aluminum plate in contact, the sliding column 30 stops moving while the lifting plate 3 continues to move downward, and the spring three 543 is compressed and deformed. The elastic force generated by the deformation of the spring three 543 pushes the square plate 542 to move downward, and the square plate 542 pushes the corresponding sliding bar 541 through the pushing bar 544 It moves in the direction away from the sliding column 30 until the sliding bar 541 moves to contact the corresponding stop plate and then stops moving. Then the lifting plate 3 continues to move downward, and the spring three 543 is continuously compressed and deformed. The elastic force generated by the deformation of the spring three 543 acts on the aluminum plate through the lower pressure bar 540 and the sliding bar 541. The cooperation between the lower pressure bar 540 and the sliding bar 541 increases the pressing area of ​​the aluminum plate, so that the residual material part in the middle area is protected by the lower pressure group 54, thereby reducing the deformation of the residual material part during the stamping operation.

[0043] like Figure 2 and Figure 3 As shown, a guide group 61 is commonly provided between the expansion plate 516 and the corresponding punching knife 4, and the guide group 61 includes a guide bar 610. Two left-right symmetrical guide bars 610 are fixedly provided on the end surface of the punching knife 4 away from the sliding column 30. Guide grooves 611 cooperating with the corresponding guide bars 610 are penetrated through the two sections of the expansion plate 516. The guide grooves 611 are divided into isosceles trapezoidal sections and vertical sections from top to bottom. The front guide groove 611 is taken as an example for explanation. The two inclined surfaces of the isosceles trapezoidal section of the guide groove 611 are respectively facing the left and right sides, and the two inclined surfaces are close to each other from top to bottom.

[0044] During operation, after the pressing group 54 completes pressing down on the middle part of the aluminum plate, the lifting plate 3 drives the punching knife 4 to continue to move downward through the connecting column. During the downward movement of the punching knife 4, the punching knife 4 drives the guide bar 610 to move downward synchronously. The punching position of the punching knife 4 is adjusted and guided by the cooperation between the guide bar 610 and the inner wall of the inclined surface of the trapezoidal section of the guide groove 611. After the guide bar 610 moves to the vertical section of the guide groove 611, the cooperation between the guide groove 611 and the guide bar 610 improves the stability of the punching knife 4 during the stamping operation. The punching knife 4 continues to move downward to stamp the aluminum plate. During the stamping process, the punching knife 4 stamps the remaining material on the aluminum plate into the sinking groove 40 to complete the stamping operation of the aluminum plate.

[0045] like Figure 3 , Figure 5 and Figure 6As shown, a limit group 62 is provided on the upper end surface of the sliding plate 52, and the limit group 62 includes a vertical plate 620. The upper end surface of the sliding plate 52 is fixedly provided with the vertical plate 620, and a fixed plate 621 is fixedly provided on the side of the vertical plate 620 close to the transmission bar 513. A rotating rod 622 with an axis extending from top to bottom rotates through the fixed plate 621, and a limit bar 623 for preventing the connecting plate from moving upward is fixedly provided on the upper section of the rotating rod 622, and a connecting block is fixedly provided on the lower end surface of the fixed plate 621, and a spiral spring 624 is fixedly provided between the rotating rod 622 and the connecting block.

[0046] During operation, after the four clamping plates 530 complete the limit clamping of the aluminum plate to be stamped, during the movement of the support plate 516, the transmission bar 513 drives the support plate 516 to move synchronously through the connecting plate, and after the transmission bar 513 moves to contact with the limit bar 623, the transmission bar 513 pushes the limit bar 623 to rotate around the rotating rod 622, and the spiral spring 624 is compressed and deformed. The transmission bar 513 continues to move until the limit bar 623 is out of contact, and the elastic force generated by the deformation of the spiral spring 624 pulls the limit bar 623 to rotate and reset, so that the limit bar 623 contacts the upper end surface of the connecting plate, and during the subsequent upward movement of the lifting plate 3, the limit bar 623 prevents the transmission bar 513 and the lifting plate from moving upward synchronously.

[0047] After the stamping operation is completed, the hydraulic cylinder drives the lifting plate 3 to move upward, and the limit bar 623 prevents the transmission bar 513 from moving upward through the connecting plate. The lifting plate 3 drives the fixing rod 515 to move upward, and the fixing rod 515 moves upward along the vertical section of the corresponding transmission groove 514 until the fixing rod 515 moves to contact the inner wall of the inclined section of the transmission groove 514. The transmission bar 513 moves in the direction close to the sliding column 30 through the cooperation between the fixing rod 515 and the inner wall of the transmission groove 514. After the transmission bar 513 moves to contact the limit bar 623, the transmission bar 513 pushes the limit bar 623 to rotate around the rotating rod 622, and the spiral spring 624 is stretched and deformed. The transmission bar 513 continues to move until the limit bar 623 is out of contact. The elastic force generated by the deformation of the spiral spring 624 pulls the limit bar 623 to rotate and reset, and then the lifting plate 3 drives the expansion plate 516 to move upward synchronously through the connecting bar 533. The elastic force generated by the deformation of the spring second 512 pushes the transmission bar 513 to move away from the sliding column 30 through the sliding block 511 until the transmission bar 513 moves and resets. The limit bar 623 in the limit group 62 pulls the connecting plate so that the fixed rod 515 moves to contact the inner wall of the inclined section of the transmission groove 514, and then the transmission bar 513 moves upward, avoiding the connecting bar 533 and the lifting plate 3 from moving upward synchronously, so that the elastic force generated by the spring second 512 due to the subsequent contact between the fixed rod 515 and the vertical section of the transmission groove 514 cannot push the sliding block 511 to move and get stuck.

[0048] like Figure 2 , Figure 3 and Figure 7 As shown, the pushing group 60 includes a pulling rod 600, and the lower end surface of the lifting plate 3 is fixedly provided with three pulling rods 600 with axes extending from top to bottom and respectively located on the left and right sides and the rear side of the sinking groove 40, and the pulling rod 600 slides up and down and passes through the placement plate 1, and the lower end surface of the pulling rod 600 is fixedly provided with a pulling bar 601 extending toward the sliding column 30, and the placement plate 1 is slidably penetrated by three pushing rods 606 with axes extending from top to bottom and corresponding to the positions of the pulling rods 600 one by one, and the lower end surfaces of the three pushing rods 606 are jointly fixedly provided with a T-shaped plate 602, and three springs 603 respectively mounted on the corresponding pushing rods 606 are jointly fixedly provided between the T-shaped plate 602 and the lower end surface of the placement plate 1.

[0049] like Figure 7 As shown, a push column 605 with an axis extending from top to bottom is fixedly provided on the upper end surface of the T-shaped plate 602, and the push column 605 slides through the placement plate 1.

[0050] See also Figure 8 In the initial position, the lifting plate 3 is located at the upper part of the fixed column 2, and the upper end surface of the pulling bar 601 contacts the lower end surface of the T-shaped plate 602, and the upper end surface of the pushing rod 606 and the upper end surface of the pushing column 605 are both located below the placing plate 1. During operation, after the stamping operation of the aluminum plate is completed, the lifting plate 3 moves upward, and the lifting plate 3 moves up to the initial position and continues to move upward. The lifting plate 3 moves upward and drives the pulling bar 601 to move upward synchronously through the pulling rod 600. After the pulling bar 601 moves upward to contact the T-shaped plate 602, the pulling bar 601 The T-shaped plate 602 is pushed to continue to move upward, and the spring four 603 is compressed and deformed. The T-shaped plate 602 pushes the push rod 606 to move upward, and the push rod 606 pushes the metal poster frame upward after the stamping is completed. At the same time, the T-shaped plate 602 pushes the push column 605 to move upward, and pushes the remaining material on the aluminum plate after the stamping is completed, so that the staff can collect the remaining material and the metal poster frame. After collection, the hydraulic cylinder pushes the lifting plate 3 to move and reset, and the T-shaped plate 602 moves downward and resets under the elastic force generated by the deformation of the spring four 603.

[0051] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal poster frame automatic punching equipment, characterized in that: include: A placement plate (1), wherein the upper end surface of the placement plate (1) is fixedly provided with four fixed columns (2) distributed in a matrix, and the axes of the fixed columns (2) extend from top to bottom, and a lifting plate (3) is slidably provided between the four fixed columns (2), and two hydraulic cylinders symmetrically distributed on the placement plate (1) are provided, and the telescopic ends of the hydraulic cylinders are fixedly connected to the lower end surface of the lifting plate (3), and a sliding column (30) with an axis extending from top to bottom is slidably penetrated on the lifting plate (3), and punching knives (4) for punching aluminum plates are fixedly provided on the lower end surface of the lifting plate (3) through four connecting columns extending from top to bottom, and the four punching knives (4) form a closed rectangle, and the upper end surface of the placement plate (1) is provided with a sinking groove (40) located below the punching knife (4) and having a rectangular shape; A clamping mechanism (5), wherein a clamping mechanism (5) for limiting the position of the aluminum plate is provided between the lifting plate (3) and the placing plate (1), an auxiliary mechanism (6) for assisting the aluminum plate stamping process is provided between the lifting plate (3) and the placing plate (1), and a pushing group (60) for pushing out the cut metal poster frame is provided on the placing plate (1); The clamping mechanism (5) comprises a movable plate (50), the movable plate (50) is slidably sleeved up and down on the sliding column (30), the lifting plate (3) is provided with an opening group (51) for opening and protecting the metal poster frame, the upper end surface of the placement plate (1) is provided with four sliding grooves corresponding to the positions of the fixed columns (2), each of which is slidably provided with a sliding plate (52), a clamping group (53) for centrally clamping the aluminum plate is provided between all the sliding plates (52) and the lifting plate (3), and a pressing group (54) for protecting the residual material during the cutting process is provided on the sliding column (30).

2. The automatic metal poster frame punching equipment according to claim 1 is characterized by: The clamping group (53) comprises a clamping plate (530), an L-shaped clamping plate (530) is fixedly provided on the upper end surface of the sliding plate (52), a rectangular plate (531) is slidably sleeved up and down on each of the fixed columns (2), a spring (532) sleeved on the corresponding fixed column (2) is fixedly provided between the rectangular plate (531) and the lifting plate (3), and a connecting strip (533) is hingedly connected between the rectangular plate (531) and the corresponding sliding plate (52).

3. The automatic metal poster frame punching equipment according to claim 1 is characterized by: The spreading group (51) comprises a sliding groove (510), the upper end surface of the movable plate (50) is penetrated by four sliding grooves (510) distributed in a matrix, and the sliding groove (510) extends along the sliding column (30) toward the fixed column (2), a sliding block (511) is slidably arranged in the sliding groove (510), a spring 2 (512) is fixedly arranged between the sliding block (511) and the inner wall of the corresponding sliding groove (510) close to the sliding column (30), a transmission bar (513) is fixedly arranged on the lower end surface of the sliding block (511), and a transmission bar (513) is fixedly arranged on the lower end surface of the sliding block (511). The bar (513) is divided into an inclined section and a vertical section from top to bottom, and the inclined section of the transmission bar (513) extends from bottom to top in a direction away from the sliding column (30). The transmission bar (513) is provided with a transmission groove (514) of the same shape as the transmission bar (513). The lifting plate (3) is provided with four placement grooves corresponding to the sliding grooves (510) one by one. A fixing rod (515) whose axis is perpendicular to the sliding column (30) is fixedly arranged in the placement groove. An L-shaped support plate (516) is fixedly arranged on the lower end surface of the transmission bar (513) through a connecting plate.

4. The automatic metal poster frame punching equipment according to claim 1 is characterized by: The pressing group (54) comprises a pressing bar (540), the lower section of the sliding column (30) is fixedly provided with four pressing bars (540) evenly distributed in the circumferential direction, the pressing bar (540) is slidingly provided with a sliding bar (541) parallel to the corresponding punching knife (4), the upper end surface of the pressing bar (540) away from the sliding column (30) is fixedly provided with a stop plate for blocking the movement of the sliding bar (541), the sliding column (30) is slidably sleeved with a square plate (542), a spring three (543) sleeved on the sliding column (30) is fixedly provided between the square plate (542) and the lifting plate (3), and a pushing bar (544) is hingedly connected between the square plate (542) and each sliding bar (541).

5. The automatic metal poster frame punching equipment according to claim 3 is characterized by: A guide group (61) is provided between the support plate (516) and the corresponding punching knife (4), and the guide group (61) includes a guide bar (610). Two left-right symmetrical guide bars (610) are fixedly provided on the end surface of the punching knife (4) away from the sliding column (30). Guide grooves (611) cooperating with the corresponding guide bars (610) are provided through the two sections of the support plate (516). The guide grooves (611) are divided into an isosceles trapezoidal section and a vertical section from top to bottom. The two inclined surfaces of the isosceles trapezoidal section of the guide groove (611) face the left and right sides respectively, and the two inclined surfaces approach each other from top to bottom.

6. The automatic metal poster frame punching equipment according to claim 3 is characterized by: The upper end surface of the sliding plate (52) is provided with a limit group (62), and the limit group (62) includes a vertical plate (620). The upper end surface of the sliding plate (52) is fixedly provided with the vertical plate (620), and a fixed plate (621) is fixedly provided on the side of the vertical plate (620) close to the transmission bar (513). A rotating rod (622) extending from top to bottom with an axis rotatably penetrates the fixed plate (621), and a limit bar (623) for preventing the connecting plate from moving upward is fixedly provided on the upper section of the rotating rod (622), and a connecting block is fixedly provided on the lower end surface of the fixed plate (621), and a spiral spring (624) is fixedly provided between the rotating rod (622) and the connecting block.

7. The automatic metal poster frame punching equipment according to claim 1 is characterized by: The pushing group (60) includes a pulling rod (600), and the lower end surface of the lifting plate (3) is fixedly provided with three pulling rods (600) with axes extending from top to bottom and respectively located on the left and right sides and the rear side of the sinking groove (40), and the pulling rod (600) slides up and down and passes through the placement plate (1), and the lower end surface of the pulling rod (600) is fixedly provided with a pulling bar (601) extending toward the sliding column (30), and the placement plate (1) is slidably passed through a pushing rod (606) with three axes extending from top to bottom and corresponding to the position of the pulling rod (600) one by one, and the lower end surfaces of the three pushing rods (606) are fixedly provided with a T-shaped plate (602), and three springs (603) respectively mounted on the corresponding pushing rods (606) are fixedly provided between the T-shaped plate (602) and the lower end surface of the placement plate (1).

8. The automatic metal poster frame punching equipment according to claim 7, characterized in that: A push column (605) with an axis extending from top to bottom is fixedly arranged on the upper end surface of the T-shaped plate (602), and the push column (605) slides through the placement plate (1).

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