A packaging box forming device facilitating demolding

Abstract

The utility model discloses a packaging box forming device convenient to demould, including base, the base upper end face is fixedly installed with fixed orifice board through a plurality of support rods, the lower mould is slidably installed to fixed orifice board upper end face, a plurality of bolts are slidably installed to fixed orifice board bottom wall, the lower mould outer bottom wall is equipped with the threaded hole cooperation with a plurality of bolts, the fixed orifice board bottom wall is slidably installed with the upper roof plate through two slide bars, and the both ends of two slide bars are fixedly installed with the limit board. The utility model discloses a cam, extrusion frame and upper top rod etc. component are set, and the motor drives the rotation of cam, and the cam pushes the extrusion frame and drives the upper roof plate to move along the slide bar, and the upper top rod passes the upper top hole of lower mould, can even, stably with the closely adsorbed packaging box of lower mould and eject, effectively overcome the problem that the demoulding force of traditional single ejection structure is uneven, avoid the deformation of packaging box, breakage, and the demoulding efficiency is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of packaging box production technology, and in particular to a packaging box forming device that facilitates demolding. Background Technology

[0002] Packaging boxes are containers used to package products. Their main functions are to protect the products during transportation and to enhance their perceived quality.

[0003] As an important carrier of product packaging, packaging boxes play a dual role in protecting products and enhancing their value. In the production and manufacturing process of packaging boxes, the molding device is the core equipment for achieving efficient production. However, in the existing technology, during the hot pressing process, the plastic packaging box blank is deformed under high temperature and pressure. After cooling, it forms a tight adhesion with the inner wall of the lower mold forming cavity. This adhesion is especially strong for smooth plastic packaging boxes, making demolding extremely difficult. Traditional molding devices mostly adopt a single ejection structure, resulting in uneven distribution of demolding force. This not only easily causes packaging box deformation and damage but also significantly reduces production efficiency, making it difficult to meet the demands of the modern packaging industry for efficient and high-quality production. Therefore, it is necessary to redesign a packaging box molding device that facilitates demolding to address the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a packaging box forming device that facilitates demolding.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A packaging box forming device for easy demolding includes a base. A fixing plate is fixedly installed on the upper surface of the base via multiple support rods. A lower mold is slidably installed on the upper surface of the fixing plate. Multiple bolts are slidably installed on the bottom wall of the fixing plate. Threaded holes that mate with the bolts are formed on the outer bottom wall of the lower mold. An upper plate is slidably installed on the bottom wall of the fixing plate via two sliding rods. Limit plates are fixedly installed at the ends of both sliding rods. The upper surface of the upper plate is connected to the bottom wall of the fixing plate via a reset mechanism. Two connecting plates are fixedly installed on the upper surface of the upper plate. Two sliders are slidably installed between the two connecting plates via a sliding mechanism. Two upper ejector rods are fixedly installed on the upper surfaces of the two sliders. Upper ejector holes that mate with the upper ejector rods are formed on the outer bottom wall of the lower mold. An extrusion frame is fixedly installed on the bottom wall of the upper plate. A rotating shaft is rotatably installed on the upper surface of the base via the connecting frame. A cam is fixedly installed on the outer wall of the rotating shaft. A motor connected to the rotating shaft is fixedly installed on the outer wall of the connecting frame.

[0007] Preferably, the reset mechanism includes a reset spring installed on the outer wall of the slide bar, and the two ends of the reset spring are elastically connected to the bottom wall of the fixing hole plate and the upper surface of the top plate, respectively.

[0008] Preferably, the sliding mechanism includes a prismatic rod fixedly installed between two connecting plates, the prismatic rod sliding through the two sliders.

[0009] Preferably, two mounting plates are fixedly installed on the upper surface of the fixing hole plate, and electric push rods are fixedly installed on the inner walls of both mounting plates.

[0010] Preferably, each of the two electric actuators has a compression plate fixedly installed at its telescopic end, and multiple anti-slip blocks are fixedly installed on the inner wall of each of the two compression plates.

[0011] The beneficial effects of this utility model are:

[0012] 1. By setting up components such as cam, extrusion frame and upper ejector rod, the motor drives the cam to rotate, the cam pushes the extrusion frame to move the upper ejector plate along the slide rod, and the upper ejector rod passes through the upper ejector hole of the lower mold. This can evenly and stably eject the packaging box that is tightly attached to the lower mold, effectively overcoming the problem of uneven demolding force in the traditional single ejection structure, avoiding deformation and damage of the packaging box, and significantly improving demolding efficiency.

[0013] 2. By setting up components such as electric push rods, extrusion plates, and anti-slip blocks, when the packaging box is stuck on the outer wall of the upper mold, the electric push rod pushes the extrusion plate to move. The arc-shaped extrusion plate, together with the anti-slip block, can accurately clamp and extrude the outer wall of the packaging box from both sides, so that the packaging box can be smoothly removed from the upper mold. This solves the problem of packaging boxes easily getting stuck in the mold during demolding, and further improves production efficiency and product qualification rate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a packaging box forming device that facilitates demolding, as proposed in this utility model.

[0015] Figure 2 for Figure 1 A schematic diagram of the vertical section structure;

[0016] Figure 3 This is a top view of a packaging box forming device that facilitates demolding, as proposed in this utility model.

[0017] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0018] In the diagram: 1. Base, 2. Support rod, 3. Fixing hole plate, 4. Lower mold, 5. Slide rod, 6. Upper top plate, 7. Limiting plate, 8. Return spring, 9. Connecting plate, 10. Prism rod, 11. Slider, 12. Upper top rod, 13. Extrusion frame, 14. Connecting frame, 15. Rotating shaft, 16. Cam, 17. Motor, 18. Mounting plate, 19. Electric push rod, 20. Extrusion plate, 21. Anti-slip block. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-4 A packaging box forming device for easy demolding includes a base 1. A fixing plate 3 is fixedly installed on the upper surface of the base 1 by multiple support rods 2. A lower mold 4 is slidably installed on the upper surface of the fixing plate 3. Multiple bolts are slidably installed on the bottom wall of the fixing plate 3. Threaded holes that mate with the bolts are opened on the outer bottom wall of the lower mold 4. An upper top plate 6 is slidably installed on the bottom wall of the fixing plate 3 by two sliding rods 5. Limit plates 7 are fixedly installed at the ends of the two sliding rods 5. The upper surface of the upper top plate 6 is connected to the bottom wall of the fixing plate 3 by a reset mechanism. Two connecting plates 9 are fixedly installed on the upper end face of the mold 6. Two sliders 11 are slidably installed between the two connecting plates 9 through a sliding mechanism. Two upper ejector rods 12 are fixedly installed on the upper end face of each slider 11. The outer bottom wall of the lower mold 4 has an upper ejector hole that mates with the multiple upper ejector rods 12. An extrusion frame 13 is fixedly installed on the bottom wall of the upper mold 6. A rotating shaft 15 is rotatably installed on the upper end face of the base 1 through a connecting frame 14. A cam 16 is fixedly installed on the outer wall of the rotating shaft 15. A motor 17 connected to the rotating shaft 15 is fixedly installed on the outer wall of the connecting frame 14.

[0021] The reset mechanism includes a reset spring 8 installed on the outer wall of the slide bar 5. The two ends of the reset spring 8 are elastically connected to the bottom wall of the fixed hole plate 3 and the upper end face of the top plate 6, respectively.

[0022] Furthermore, the return spring 8 is made of high-strength spring steel, which has good elasticity and fatigue resistance. It can maintain stable elastic deformation in multiple reciprocating motions, ensuring that the upper top plate 6 quickly and accurately returns to its original position after the demolding action is completed, thus preparing for the next demolding operation and reducing the problem of reduced production efficiency caused by reset delay.

[0023] The sliding mechanism includes a prism rod 10 fixedly installed between two connecting plates 9, and the prism rod 10 slides through the two sliders 11.

[0024] Furthermore, the prismatic cross-section design of the prismatic rod 10 can effectively restrict the rotational freedom of the slider 11, so that the slider 11 can only slide along the axial direction of the prismatic rod 10, thereby ensuring the stability and synchronization of the two sliders 11 during the movement process.

[0025] Two mounting plates 18 are fixedly installed on the upper end face of the fixed hole plate 3, and electric push rods 19 are fixedly installed on the inner walls of the two mounting plates 18.

[0026] Furthermore, the electric push rod 19 adopts a high-precision electric push rod, which has the characteristics of adjustable stroke and stable thrust. The extension stroke and speed of the electric push rod 19 can be precisely controlled by the PLC control system. During the demolding process, the moving distance and force of the extrusion plate 20 can be precisely adjusted according to the actual mold jamming situation of the packaging box, so as to ensure that the packaging box is effectively pushed out of the upper mold while avoiding damage to the packaging box due to excessive force, thereby improving the accuracy and reliability of the demolding operation.

[0027] Both electric actuators 19 have extrusion plates 20 fixedly installed at their telescopic ends, and multiple anti-slip blocks 21 are fixedly installed on the inner walls of both extrusion plates 20.

[0028] Furthermore, the anti-slip block 21 is made of rubber material with a high coefficient of friction and has an uneven toothed structure on its surface, which can significantly increase the friction between the anti-slip block and the outer wall of the packaging box. It provides reliable gripping force when the packaging box is squeezed, preventing the packaging box from slipping or shifting during the process of detaching from the upper mold. At the same time, the rubber material has a certain degree of elasticity, which can adapt to the outer contour of the packaging box of different shapes. It plays a buffering role while applying extrusion force, protecting the surface of the packaging box from scratches or damage, and effectively improving the product yield.

[0029] When using this utility model, a suitable lower mold 4 is selected according to the size of the packaging box to be produced. The lower mold 4 is fixedly installed on the fixed hole plate 3 by bolts. Before this process, the slider 11 can be pushed to slide on the outer wall of the prismatic rod 10, thereby adjusting the distance between the two upper push rods 12 on both sides, so as to be suitable for lower molds 4 of different sizes. When forming the packaging box, the packaging box blank is placed in the forming cavity of the lower mold 4. Then the upper mold moves downward to squeeze the packaging box blank inside the lower mold 4, and the blank is squeezed into the lower mold 4 to form. When demolding, the upper mold moves upward. When the formed packaging box is stuck on the outer wall of the upper mold, the electric push rods 19 on both sides can extend synchronously and drive the extrusion plate 20 on the same side to move. This allows multiple anti-sliding sliders 21 on both sides to clamp the outer wall of the packaging box. As the upper mold continues to rise, the clamped packaging box can be released from the outer wall of the upper mold.

[0030] When the packaging box is tightly fitted to the forming cavity of the lower mold 4 and cannot be removed, the motor 17 starts, driving the rotating shaft 15 and the cam 16 to start rotating. As the cam 16 rotates, its protruding part pushes the extrusion frame 13, causing the upper top plate 6 to overcome the elastic force of the return spring 8 and move upward along the slide rod 5. At this time, the upper push rod 12, which is fixedly installed on the slider 11, rises together with the upper top plate 6. The upper push rod 12 passes through the upper top hole on the outer bottom wall of the lower mold 4, pushing the packaging box, which is tightly fitted to the forming cavity, out of the lower mold 4. When the protruding part of the cam 16 disengages from the extrusion frame 13, under the elastic action of the return spring 8, the upper top plate 6 drives the upper push rod 12 to move downward to reset, waiting for the next demolding operation. This completes the entire demolding process, ensuring that the packaging box is successfully removed from the forming device.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A packaging box forming device for easy demolding, comprising a base (1), characterized in that, A fixing plate (3) is fixedly installed on the upper surface of the base (1) by multiple support rods (2). A lower mold (4) is slidably installed on the upper surface of the fixing plate (3). Multiple bolts are slidably installed on the bottom wall of the fixing plate (3). Threaded holes for the multiple bolts are opened on the outer bottom wall of the lower mold (4). An upper top plate (6) is slidably installed on the bottom wall of the fixing plate (3) by two sliding rods (5). Limit plates (7) are fixedly installed at the ends of both sliding rods (5). The upper surface of the upper top plate (6) is connected to the bottom wall of the fixing plate (3) through a reset mechanism. Two connecting plates are fixedly installed on the upper surface of the upper top plate (6). The connecting plate (9) has two sliders (11) slidably installed between the two connecting plates (9) through a sliding mechanism. Two upper push rods (12) are fixedly installed on the upper end face of each slider (11). The lower mold (4) has an upper push hole on its outer bottom wall that cooperates with the multiple upper push rods (12). An extrusion frame (13) is fixedly installed on the bottom wall of the upper top plate (6). A rotating shaft (15) is rotatably installed on the upper end face of the base (1) through a connecting frame (14). A cam (16) is fixedly installed on the outer wall of the rotating shaft (15). A motor (17) connected to the rotating shaft (15) is fixedly installed on the outer wall of the connecting frame (14).

2. The packaging box forming device for easy demolding according to claim 1, characterized in that, The reset mechanism includes a reset spring (8) installed on the outer wall of the slide bar (5), and the two ends of the reset spring (8) are elastically connected to the bottom wall of the fixed hole plate (3) and the upper end face of the top plate (6), respectively.

3. The packaging box forming device for easy demolding according to claim 2, characterized in that, The sliding mechanism includes a prismatic rod (10) fixedly installed between two connecting plates (9), and the prismatic rod (10) slides through the two sliders (11).

4. The packaging box forming device for easy demolding according to claim 3, characterized in that, Two mounting plates (18) are fixedly installed on the upper end face of the fixed hole plate (3), and electric push rods (19) are fixedly installed on the inner walls of the two mounting plates (18).

5. The packaging box forming device for easy demolding according to claim 4, characterized in that, Both of the electric actuators (19) have extrusion plates (20) fixedly installed at their telescopic ends, and multiple anti-slip blocks (21) are fixedly installed on the inner walls of both extrusion plates (20).

Images