A plate punching die for packaging carton indentation

Abstract

The utility model discloses a kind of plate stamping die for packaging carton indentation, belong to stamping die technical field, including receiving table, lower die and upper die, still set up integrated in the deslag component of lower die inside and the adjusting component for adjusting lower die height, the deslag component can be quickly ejected by rocker, connecting piece linkage lifting plate and discharge rod, after stamping, the waste material accumulated in lower die hole can be quickly ejected.The adjusting component can be accurately fine-tuned to the vertical position of lower die by the cooperation of knob, bolt and nut, to control indentation depth.The utility model solves the problem of waste accumulation difficult to clean and indentation depth in the prior art, realizes the rapid discharge of waste, improves production efficiency;Accurately control processing depth simultaneously, strong applicability, reliable structure, easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a sheet metal stamping die for creasing packaging cartons. Background Technology

[0002] As an indispensable part of modern logistics and commodity circulation, the quality of packaging cartons directly affects the protective effect and appearance of products. In the manufacturing process of packaging cartons, stamping dies are usually used to crease and punch paperboard and other boards to form pre-set fold lines or functional holes.

[0003] In traditional sheet metal stamping, when the upper and lower dies close to punch holes in the sheet metal, the scrap material cut off naturally falls into the forming holes inside the lower die due to gravity. In single-batch or small-volume production, this scrap falling off doesn't immediately cause problems. However, in continuous, large-scale automated production scenarios, this scrap material will continuously accumulate in the holes of the lower die.

[0004] As waste material accumulates, the holes in the lower die gradually become filled or even blocked. If stamping continues at this point, the newly generated waste has nowhere to go, leading not only to incomplete punching and surface damage in subsequent products, but more seriously, excessive stamping pressure can directly act on the blocked waste, damaging the die's cutting edge or the precision forming structure. To avoid this, operators must periodically interrupt production to clean the lower die using an air gun or manual tools. This method not only significantly reduces production efficiency but also increases the intensity of manual labor.

[0005] Therefore, this utility model proposes a stamping die for embossing packaging cartons to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a plate stamping die for creasing packaging cartons, aiming to improve the existing technology where waste material easily accumulates inside the lower die during continuous stamping operations, which is difficult to clean and leads to frequent machine shutdowns for maintenance, seriously affecting production efficiency.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a plate stamping die for creasing packaging cartons, comprising: a receiving platform, a lower die, and an upper die, wherein the lower die is disposed on the receiving platform and has a stamping hole penetrating its top and bottom surfaces, the upper die is disposed above the lower die and can reciprocate relative to the lower die in a vertical direction, and further comprises a slag discharge component, wherein the slag discharge component is integrated inside the lower die; The slag discharge assembly includes a lifting plate, a discharge rod, a rocker arm, and a connecting piece. The lifting plate is movably disposed in the inner cavity of the lower die. The upper part of the discharge rod is movably inserted into the stamping hole, and the lower end of the discharge rod is supported on the lifting plate. The rocker arm is pivotally mounted on the outside of the lower die. One end of the connecting piece is connected to the rocker arm, and the other end is connected to the lifting plate.

[0008] Preferably, the slag discharge assembly further includes a buffer element, which is an elastic element and is disposed between the lifting plate and the inner wall of the lower mold.

[0009] Preferably, the slag discharge assembly further includes a second limiting rod, which is fixed to the lower mold and configured to abut against the rocker arm to limit its rotation range.

[0010] Preferably, it further includes an adjustment component, which is disposed between the receiving platform and the lower mold, for adjusting the height of the lower mold relative to the receiving platform.

[0011] Preferably, the adjustment assembly includes a knob, a bolt, and a nut; the knob is rotatably mounted on the side wall of the receiving platform, the nut is fixed inside the receiving platform, the bolt is coaxially connected to the knob and threadedly engaged with the nut, and the top end of the bolt abuts against the bottom surface of the lower mold.

[0012] Preferably, the adjusting assembly further includes an elastic pad disposed between the top of the bolt and the bottom surface of the lower mold.

[0013] Preferably, the adjustment assembly further includes a protective plate that covers and is fixed to the side of the receiving platform.

[0014] Preferably, it also includes a first limiting rod, which is fixedly connected to the receiving platform to limit the downward movement stroke of the upper mold.

[0015] This utility model has the following beneficial effects: 1. In this utility model, by setting up a slag discharge component and using a rocker arm to link the lifting and lowering of the discharge rod, the waste generated during the stamping process is pushed out from the hole of the lower die. This solves the problem in the prior art that stamping waste is easy to accumulate inside the lower die, requiring manual cleaning after machine stoppage, which affects production efficiency. It achieves the effect of quick and convenient discharge of waste, reducing downtime maintenance time, and significantly improving production continuity and processing efficiency.

[0016] 2. This utility model, by setting an adjustment component, allows the operation of a knob to drive the bolt and nut to cooperate, thereby achieving a slight displacement of the lower die height, which changes the relative distance between the upper and lower dies. This solves the problem in the prior art where the stamping die structure is fixed, making it impossible to finely adjust the depth of the indentation, resulting in a narrow range of applications. It achieves the effect of accurately controlling the depth of the indentation, allowing the die to adapt to the processing needs of plates of different thicknesses, and improving the processing accuracy and equipment versatility. Attached Figure Description

[0017] Figure 1 This is a perspective view of a sheet metal stamping die for creasing packaging cartons proposed in this utility model; Figure 2 This is a schematic diagram of an elastic pad for a stamping die for creasing packaging cartons, as proposed in this utility model. Figure 3 This is a schematic diagram of the lower die of a stamping die for creasing packaging cartons proposed in this utility model; Figure 4 This is a schematic diagram of a buffer component for a stamping die for creasing packaging cartons, as proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0018] Legend: 1. Receiving platform; 2. Upper mold; 3. Lower mold; 4. First limiting rod; 5. Slag discharge assembly; 501. Rocker arm; 502. Second limiting rod; 503. Connecting piece; 504. Lifting plate; 505. Discharge rod; 506. Buffer; 6. Adjusting assembly; 601. Protective plate; 602. Elastic pad; 603. Knob; 604. Bolt; 605. Nut. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figures 1-5 This utility model provides a plate stamping die for creasing packaging cartons, aiming to solve the problems in the prior art where stamping waste easily accumulates in the die and is difficult to clean, and the die has poor applicability and cannot accurately adjust the creasing depth.

[0021] Specifically, it includes a receiving platform 1, a lower mold 3, and an upper mold 2; the lower mold 3 is set on the receiving platform 1, and the lower mold 3 has a stamping hole that penetrates the top and bottom surfaces of the lower mold 3; the upper mold 2 is set above the lower mold 3, and the upper mold 2 can reciprocate relative to the lower mold 3 in the vertical direction, for stamping or indenting the sheet metal placed on the lower mold 3.

[0022] It also includes a slag removal component 5, which is integrated inside the lower die 3 and is used to remove waste material that falls into the stamping hole during the stamping process.

[0023] The slag discharge assembly 5 includes a lifting plate 504, multiple discharge rods 505, a rocker arm 501, and a connector 503. The lifting plate 504 is an integral plate structure, which is movably disposed within the inner cavity of the lower die 3. The upper parts of the multiple discharge rods 505 are movably and correspondingly inserted into multiple stamping holes of the lower die 3, and the lower ends of the discharge rods 505 are vertically supported and fixed to the upper surface of the lifting plate 504, so that all discharge rods 505 can rise and fall synchronously with the lifting plate 504. The rocker arm 501 is pivotally mounted on... On the outside of the lower die 3, a portion of the rocker arm 501 is exposed outside the lower die 3 for manual operation; the connecting piece 503 is a rigid linkage structure, with one end of the connecting piece 503 rotatably connected to the rocker arm 501 and the other end rotatably connected to the lifting plate 504; through this connection, when the operator rotates the rocker arm 501, the rotational motion of the rocker arm 501 is converted into the linear lifting motion of the lifting plate 504 through the connecting piece 503, thereby driving all the discharge rods 505 to rise or fall synchronously in the stamping hole, realizing the batch ejection of waste materials.

[0024] To ensure automatic reset and buffering after the discharge rod 505 discharges waste, the slag discharge assembly 5 also includes a buffer element 506. The buffer element 506 is an elastic element and is disposed between the lower surface of the lifting plate 504 and the inner cavity bottom wall of the lower mold 3. Specifically, the buffer element 506 can be multiple compression springs, evenly distributed below the lifting plate 504. In the initial state, the buffer element 506 is in a pre-compressed state, providing an upward initial support force for the lifting plate 504. When the operating rocker arm 501 moves the lifting plate 504 upward to eject the waste, the buffer element 506 is further compressed and stores elastic potential energy. When the external force is released, the elastic potential energy stored in the buffer element 506 is released, driving the lifting plate 504 to smoothly reset downward to the initial position. At the same time, at the two extreme positions of the lifting plate 504 rising and resetting, the buffer element 506 can effectively absorb the impact, avoiding damage to the slag discharge assembly 5 and the lower mold 3 caused by rigid collisions.

[0025] To precisely control the discharge stroke and ensure the reliability of the operation, the slag discharge assembly 5 also includes a second limiting rod 502. The second limiting rod 502 is fixed on the lower die 3 and configured to abut against the rocker arm 501 to limit the rotation range of the rocker arm 501. Specifically, the second limiting rod 502 can be two fixed blocks set on the rotation path of the rocker arm 501, corresponding to the position where the rocker arm 501 drives the discharge rod 505 to rise to the highest point and the position where it returns to the lowest point, respectively. Through this physical limiting method, it is ensured that the stroke of each discharge action is fixed, which not only ensures that the waste can be completely ejected from the stamping hole, but also prevents the discharge rod 505 from rising too high due to excessive operation, thus preventing interference or damage to the upper die 2 or other components.

[0026] To achieve precise adaptation to different sheet thicknesses or indentation depths, the stamping die also includes an adjustment component 6. The adjustment component 6 is located between the receiving platform 1 and the lower die 3, and is used to fine-tune the vertical height of the lower die 3 relative to the receiving platform 1. Specifically, the adjustment component 6 includes a knob 603, a bolt 604, and a nut 605. The knob 603 is rotatably mounted on the side wall of the receiving platform 1, allowing the operator to adjust it from outside the equipment. The nut 605 is fixedly mounted inside the receiving platform 1 in a non-rotatable manner. The bolt 604 is coaxially fixedly connected to the knob 603, with the threaded section of the bolt 604 threadedly engaging with the nut 605. The top of the bolt 604 extends upwards from the receiving platform 1 and abuts against the bottom surface of the lower die 3. When the operator rotates the knob 603, the bolt 604 rotates synchronously. Because the nut 605 is fixed, the bolt 604 experiences a vertical displacement along its own axis, thereby transmitting this minute displacement to the lower die 3 through the top of the bolt 604, achieving precise lifting or lowering adjustment of the overall height of the lower die 3.

[0027] To provide cushioning and ensure support stability during adjustment, the adjustment assembly 6 also includes an elastic pad 602. The elastic pad 602 is disposed between the top of the bolt 604 and the bottom surface of the lower die 3. The elastic pad 602 is preferably a polyurethane elastomer or a disc spring assembly with high hardness and wear resistance. The elastic pad 602 can not only uniformly transmit the lifting force of the bolt 604 to the bottom surface of the lower die 3, avoiding stress concentration and wear caused by point contact, but also absorb high-frequency vibration during stamping, making the height setting of the lower die 3 more stable and reliable, and further improving the processing accuracy.

[0028] To improve equipment safety and protect the adjustment mechanism, the adjustment assembly 6 also includes a protective plate 601. The protective plate 601 covers and is fixed to the side of the receiving platform 1, shielding the base of the knob 603 and the mating area between the bolt 604 and the receiving platform 1. The protective plate 601 can prevent the operator's hand or foreign objects from accidentally entering the movement gap of the adjustment mechanism and causing danger. On the other hand, it can also effectively prevent external contaminants such as dust and paper scraps from entering the threaded joint of the bolt 604 and nut 605, ensuring the cleanliness of the adjustment mechanism and its smooth operation for long-term use.

[0029] To prevent damage to the die from excessive stamping stroke, the stamping die also includes a first limiting rod 4. The first limiting rod 4 is a rigid column and is fixedly connected to the receiving platform 1. The height of the first limiting rod 4 is precisely set to limit the final downward movement position of the upper die 2. During the stamping process, when the upper die 2 descends to the preset depth, a certain structural surface of the upper die 2 or the slider that moves with the upper die 2 will contact the top of the first limiting rod 4, thereby preventing the upper die 2 from continuing to descend. This hard limiting method is simple and reliable, effectively avoiding accidents caused by excessive driving force or control component failure that result in rigid collision between the upper die 2 and the lower die 3, protecting the cutting edge and core structure of the die, and ensuring the safety and consistency of production.

[0030] Working principle: When stamping with a mold, the sheet metal between the upper mold 2 and the lower mold 3 is supported by the receiving platform 1. When the upper mold 2 moves downward under the drive of an external force, it cooperates with the forming hole on the lower mold 3 to perform indentation or punching operations on the sheet metal. The first limiting rod 4 is used to limit the movement stroke between the upper mold 2 and the lower mold 3 to prevent excessive stamping from damaging the mold or deforming the sheet metal. During the stamping process, the upper mold 2 is provided with a protrusion that cooperates with the hole in the lower mold 3 to punch out the material at the corresponding position of the sheet metal to form a hole. The punched sheet metal fragments will fall into the hole inside the lower mold 3. In order to prevent these fragments from accumulating and affecting the next stamping, this utility model is provided with a slag discharge assembly 5. The slag discharge assembly 5 includes a rocker arm 501, a second limiting rod 502, a connecting piece 503, a lifting plate 504, a discharge rod 505, and a buffer piece 506. After stamping is completed, the operator can rotate or push the rocker arm 501 to move the connecting piece 503 and lift the lifting plate 504 upward, thereby pushing the discharge rod 505 upward. The rising of the discharge rod 505 pushes out the waste material in the hole, realizing the automatic discharge function. The buffer piece 506 provides elastic support during the rising and resetting process of the discharge rod 505 to prevent damage to the mold from instantaneous impact. The second limit rod 502 is used to limit the movement stroke of the discharge rod 505 to ensure stable and reliable discharge action.

[0031] When different indentation patterns are required, the adjustment component 6 is operated. The adjustment component 6 includes a protective plate 601, an elastic pad 602, a knob 603, a bolt 604, and a nut 605. The operator can rotate the knob 603 to drive the bolt 604 to move axially. The bolt 604 and the nut 605 work together to cause a slight height displacement of the lower die 3 on the receiving platform 1, thereby changing the relative distance between the upper die 2 and the lower die 3. In this way, the indentation depth or punching effect of the sheet can be finely adjusted. The elastic pad 602 is used to provide buffering and stable support during the adjustment process. The protective plate 601 is used to cover the adjustment area of ​​the bolt 604 to improve the safety of the device. The slag discharge component 5 realizes the automatic discharge of stamping waste. The adjustment component 6 realizes the adjustable control of the position of the lower die 3, making the processing accuracy higher, the maintenance more convenient, and the structure reliable. It is suitable for stamping and indentation processing of packaging cartons.

Claims

1. A sheet metal stamping die for creasing packaging cartons, comprising: The assembly comprises a receiving platform (1), a lower mold (3), and an upper mold (2). The lower mold (3) is disposed on the receiving platform (1) and has a stamping hole that penetrates its top and bottom surfaces. The upper mold (2) is disposed above the lower mold (3) and can reciprocate relative to the lower mold (3) in a vertical direction. The assembly is characterized by further comprising a slag discharge component (5), which is integrated inside the lower mold (3). The slag discharge assembly (5) includes a lifting plate (504), a discharge rod (505), a rocker arm (501), and a connector (503). The lifting plate (504) is movably disposed in the inner cavity of the lower mold (3). The upper part of the discharge rod (505) is movably inserted into the stamping hole, and the lower end of the discharge rod (505) is supported on the lifting plate (504). The rocker arm (501) is pivotally mounted on the outside of the lower mold (3). One end of the connector (503) is connected to the rocker arm (501), and the other end is connected to the lifting plate (504).

2. The sheet metal stamping die for creasing packaging cartons according to claim 1, characterized in that, The slag discharge assembly (5) also includes a buffer (506), which is an elastic element and is disposed between the lifting plate (504) and the inner wall of the lower mold (3).

3. A sheet metal stamping die for creasing packaging cartons according to claim 1, characterized in that, The slag discharge assembly (5) also includes a second limiting rod (502), which is fixed to the lower mold (3) and configured to abut against the rocker arm (501) to limit its rotation range.

4. A sheet metal stamping die for creasing packaging cartons according to claim 1, characterized in that, It also includes an adjustment component (6), which is disposed between the receiving platform (1) and the lower mold (3) for adjusting the height of the lower mold (3) relative to the receiving platform (1).

5. A sheet metal stamping die for creasing packaging cartons according to claim 4, characterized in that, The adjustment assembly (6) includes a knob (603), a bolt (604), and a nut (605). The knob (603) is rotatably mounted on the side wall of the receiving platform (1). The nut (605) is fixed inside the receiving platform (1). The bolt (604) is coaxially connected to the knob (603) and threadedly engaged with the nut (605). The top end of the bolt (604) abuts against the bottom surface of the lower mold (3).

6. A sheet metal stamping die for creasing packaging cartons according to claim 5, characterized in that, The adjustment assembly (6) further includes an elastic pad (602), which is disposed between the top of the bolt (604) and the bottom surface of the lower mold (3).

7. A sheet metal stamping die for creasing packaging cartons according to claim 5, characterized in that, The adjustment assembly (6) also includes a protective plate (601) which covers and is fixed to the side of the receiving platform (1).

8. A sheet metal stamping die for creasing packaging cartons according to claim 1, characterized in that, It also includes a first limiting rod (4), which is fixedly connected to the receiving platform (1) and is used to limit the downward movement stroke of the upper mold (2).

Images