Composite printed pet material die cutting apparatus

Abstract

The present application relates to the technical field of PET material processing, and particularly relates to a composite printing PET material die-cutting device, the cutter die is provided with a heating mechanism for heating the cutter die; the lower die is provided with a limiting mechanism for limiting the PET sheet on both sides; the limiting mechanism comprises an outer shell slidingly arranged on the lower die, and the sliding direction of the outer shell is perpendicular to the advancing direction of the PET sheet; both sides of the outer shell are provided with stoppers, and both sides of the top of the outer shell are provided with openings for the stoppers to extend out, and the top end of the stopper is inside the outer shell in the non-working state; the device has a simple structure, when the composite PET material is die-cut, the PET material is relatively soft through the heating mode, so that the cutting layer separation and whitening phenomenon are improved, the yield is improved, and the device for limiting the PET sheet does not need to be manually adjusted, the convenience is improved; the device comprises a cutter die and a lower die, and the cutter die can reciprocatingly ascend and descend relative to the lower die.

Description

Technical Field

[0001] This invention relates to the technical field of PET material processing, and in particular to die-cutting equipment for composite printed PET materials. Background Technology

[0002] Composite printed PET material refers to polyethylene terephthalate (PET) films or sheets processed through multiple printing techniques. This material combines the high strength, transparency, and good barrier properties of PET with a rich array of printing effects. By employing multiple techniques such as letterpress, gravure, screen printing, or digital printing, complex designs such as colorful patterns, anti-counterfeiting labels, and metallic textures can be achieved on the PET surface. It is suitable for high-end packaging, advertising stickers, and electronic product displays, enhancing the visual appeal and brand value of products while fully meeting the market's growing demand for diverse material performance and appearance.

[0003] With the development of society, PET material is widely used in the 3C industry, with various thickness requirements ranging from 0.05 to 0.5 mm. The thicker the PET, the more complex the production process requires multi-layer roll forming. This can lead to material delamination at the cut edge during die cutting, resulting in a whitening of the cut edge. This is especially noticeable when the PET material has dark printing, leading to poor product appearance, high defect rate, and high cost. Furthermore, in the current technology, the device for limiting the PET sheet material still needs to be manually adjusted, which is inconvenient. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a composite printing PET material die-cutting equipment with a simple structure. During the die-cutting of composite PET materials, heating is used to make the PET material relatively soft, thereby improving the delamination and whitening of the cut, increasing the yield, reducing costs, and eliminating the need for manual adjustment of the PET sheet limiting device, thus improving convenience.

[0005] The composite printed PET material die-cutting equipment of the present invention includes a die and a lower die, wherein the die can reciprocate up and down relative to the lower die; the die is provided with a heating mechanism for heating the die.

[0006] Both sides of the lower mold are equipped with limiting mechanisms for limiting the PET sheet material.

[0007] The limiting mechanism includes a housing that is slidably disposed on the lower mold, and the sliding direction of the housing is perpendicular to the forward direction of the PET sheet.

[0008] Both sides of the inner shell are equipped with a stopper, and both sides of the top of the shell are opened for the stopper to extend out. When not in operation, the top of the stopper is inside the shell. When the PET sheet is being limited, the top of the stopper protrudes out of the top of the shell.

[0009] As a preferred embodiment of the present invention, the blocker is driven by a drive mechanism, and two drive mechanisms located in the same housing are symmetrically arranged.

[0010] The driving mechanism includes a connecting part that is slidably installed inside the housing, and the sliding direction of the connecting part is perpendicular to the forward direction of the PET sheet. A guide hole is provided on the connecting part, and the guide hole includes a vertical section and a horizontal section.

[0011] The drive mechanism also includes a rotating shaft rotatably mounted on the connecting part and a movable shaft passing through the guide hole. One end of the rotating shaft is provided with a drive rod, and the other end of the drive rod is slidably engaged with the movable shaft.

[0012] The stopper is disposed on one end of the moving shaft;

[0013] One end of the shaft is equipped with a power mechanism for driving its rotation.

[0014] As a preferred embodiment of the present invention, the driving mechanism further includes a guide rail one fixed to the connecting part, a slider one sliding on the guide rail one, a guide rail two fixed to the slider one, and a slider two slidably connected to the guide rail two.

[0015] The other end of the moving shaft is fixed to the second slider.

[0016] In a preferred embodiment of the present invention, the two connecting portions located within the same housing are driven by an adjustment mechanism to move synchronously in opposite directions.

[0017] The adjustment mechanism includes a bearing seat disposed inside the housing, and a lead screw is rotatably connected to the bearing seat. The lead screw has a positive thread and a negative thread, and the positive thread and the negative thread are respectively threaded to the threaded sleeves on the two connecting parts.

[0018] One end of the lead screw extends outside the housing, and a handwheel is provided at this end.

[0019] As a preferred embodiment of the present invention, the blocker is a guide shaft, and a flexible part is provided on the outside of the blocker;

[0020] The bottom end of the stopper is rotatably connected to a lead screw, which is threadedly connected to the moving shaft. Nuts are threadedly connected to both the upper and lower sides of the lead screw on the moving shaft.

[0021] As a preferred embodiment of the present invention, the outer casing is provided with a locking element.

[0022] As a preferred embodiment of the present invention, a rolling element is provided on the moving shaft, and the rolling element contacts the inner wall of the guide hole.

[0023] As a preferred embodiment of the present invention, the drive rod has an elongated hole along its length, and the moving shaft passes through the elongated hole.

[0024] As a preferred embodiment of the present invention, the movable shaft is provided with a second rolling element, which contacts the inner wall of the elongated hole.

[0025] As a preferred embodiment of the present invention, the outer casing is provided with an end cap.

[0026] Compared with the prior art, the beneficial effects of this invention are as follows: When in use and not in operation, the top of the stopper is inside the outer shell. The PET sheet is passed through the die and the lower mold. The position of the outer shell is adjusted according to the position of the PET sheet, improving practicality. Then, the top of the stopper automatically protrudes from the top of the outer shell to limit the end of the PET sheet. Under the action of the heating rod, the die is brought to a set temperature for die cutting. During the die cutting process, the PET material becomes relatively soft through heating, thereby improving the phenomenon of delamination and whitening at the cut. During the die cutting process, friction is generated between the end of the PET sheet and the stopper, causing the stopper to rotate, which serves to limit the PET sheet. The action of the stopper is automatic and does not require manual adjustment. Moreover, when not in operation, the top of the stopper is inside the outer shell, and the top space of the outer shell is large, which does not affect the feeding process of the PET sheet. At the same time, the stopper can operate automatically without human operation, greatly improving convenience. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure of the inner and outer shell;

[0029] Figure 3 This is a structural diagram of the die-cutting mold and the heating mechanism;

[0030] Figure 4 It is a structural diagram of the outer casing, the stopper, the drive mechanism, and the adjustment mechanism;

[0031] Figure 5 yes Figure 4 Enlarged view of section A in the middle;

[0032] Figure 6 yes Figure 4 Rear view;

[0033] Figure 7 yes Figure 6 Enlarged view of section B;

[0034] The following are labels in the attached diagram: 1. Die-cutting mold; 2. Lower mold; 3. Heating mechanism; 4. Outer shell; 5. Stopper; 6. Connecting part; 7. Guide hole; 8. Rotating shaft; 9. Moving shaft; 10. Drive rod; 11. Power mechanism; 12. Guide rail one; 13. Slider one; 14. Guide rail two; 15. Slider two; 16. Bearing seat; 17. Lead screw one; 18. Lead screw two; 19. Nut; 20. Locking element; 21. Rolling element one; 22. Long hole; 23. Rolling element two; 24. End cap; 25. Opening. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Example

[0039] Reference Figures 1-7 This embodiment provides a composite printed PET material die-cutting device, including a die 1 and a lower die 2, wherein the die 1 can reciprocate up and down relative to the lower die 2; the die 1 is provided with a heating mechanism 3 for heating the die 1, more specifically, as shown in... Figure 3 As shown, the heating mechanism 3 is a heating rod installed inside the die 1. Under the action of the heating rod, the die 1 is brought to a set temperature for die cutting.

[0040] Both sides of the lower mold 2 are equipped with limiting mechanisms for limiting the PET sheet material;

[0041] The limiting mechanism includes a housing 4 that is slidably disposed on the lower mold 2, and the sliding direction of the housing 4 is perpendicular to the forward direction of the PET sheet.

[0042] Both sides of the inner shell 4 are provided with a stopper 5, and both sides of the top of the outer shell 4 are provided with an opening 25 for the stopper 5 to extend out. When it is not in working state, the top of the stopper 5 is inside the outer shell 4. When the PET sheet is limited, the top of the stopper 5 protrudes out of the top of the outer shell 4.

[0043] When not in use, the top of the stopper 5 is inside the outer shell 4. The PET sheet is passed through the die 1 and the lower die 2. The position of the outer shell 4 is adjusted according to the position of the PET sheet, improving practicality. Then, the top of the stopper 5 automatically protrudes from the top of the outer shell 4 to limit the end of the PET sheet. Under the action of the heating rod, the die 1 is brought to a set temperature for die cutting. During the die cutting process, the PET material becomes relatively soft through heating, thereby improving the delamination and whitening of the cut. During the die cutting process, friction is generated between the end of the PET sheet and the stopper 5, causing the stopper 5 to rotate, which serves to limit the PET sheet. The action of the stopper 5 is automatic and does not require manual adjustment. When not in use, the top of the stopper 5 is inside the outer shell 4. The top space of the outer shell 4 is large and will not affect the feeding process of the PET sheet. At the same time, the stopper 5 can operate automatically without human operation, which greatly improves convenience.

[0044] As a preferred embodiment of the present invention, refer to Figures 4-7 The blocker 5 is driven by a drive mechanism, and the two drive mechanisms located in the same housing 4 are symmetrically arranged.

[0045] The driving mechanism includes a connecting part 6 that is slidably installed inside the housing 4. The connecting part 6 is a plate that is slidably installed inside the housing 4. This increases the adjustment distance of the stopper 5, increases the adaptability of PET sheet material, and improves practicality. The sliding direction of the connecting part 6 is perpendicular to the forward direction of the PET sheet material. A guide hole 7 is provided on the connecting part 6. The guide hole 7 includes a vertical section and a horizontal section. More specifically, the horizontal section is closer to the middle of the housing 4 than the vertical section, and the horizontal section is above the vertical section.

[0046] The drive mechanism also includes a rotating shaft 8 rotatably mounted on the connecting part 6 and a moving shaft 9 passing through the guide hole 7. The rotating shaft 8 is located below the middle area of ​​the horizontal section. One end of the rotating shaft 8 is provided with a drive rod 10, which is fixedly connected to the rotating shaft 8. The other end of the drive rod 10 is slidably engaged with the moving shaft 9. More specifically, along the length direction of the drive rod 10, the drive rod 10 has an elongated hole 22, through which the moving shaft 9 passes. The moving shaft 9 is provided with a second rolling element 23, which contacts the inner wall of the elongated hole 22.

[0047] The blocker 5 is disposed on one end of the moving shaft 9;

[0048] One end of the rotating shaft 8 is provided with a power mechanism 11 for driving it to rotate, and the power mechanism 11 is a servo motor.

[0049] When in use and not in operation, the top of the blocker 5 is inside the housing 4, and the moving shaft 9 is at the bottom of the vertical section. The rotating shaft 8 is controlled by the power mechanism 11 to rotate, which in turn drives the drive rod 10 to rotate. Since the rotating shaft 8 is located below the middle area of ​​the horizontal section, and the other end of the drive rod 10 is in sliding engagement with the moving shaft 9, the drive rod 10 can always generate a thrust on the moving shaft 9 when it rotates, causing the moving shaft 9 to move along the vertical and horizontal sections of the guide hole 7. When the moving shaft 9 moves in the vertical section, the blocker 5 moves vertically upward. When the moving shaft 9 moves in the horizontal section, the blocker 5 moves horizontally towards the end of the PET sheet. The blocker 5 stops when it contacts the end of the PET sheet, and the top of the blocker 5 protrudes out of the housing 4. Through the cooperation of the guide hole 7 and the power mechanism 11, the vertical and horizontal movement of the blocker 5 can be controlled by a single power source from the power mechanism 11, which reduces the cost of use and improves automation.

[0050] As a preferred embodiment of the present invention, refer to Figure 7 The driving mechanism also includes a guide rail 12 fixed to the connecting part 6. The guide rail 12 is arranged in the horizontal direction. A slider 13 slides on the guide rail 12. The slider 13 is fixed to the guide rail 14. The guide rail 14 is slidably connected to the slider 15. The guide rail 14 is arranged in the vertical direction. The other end of the moving shaft 9 is fixed to the slider 15.

[0051] During use, since slider 2 15 can only slide relative to guide rail 1 12 and guide rail 2 14 and cannot rotate, and the other end of the moving shaft 9 is fixed to slider 2 15, the moving shaft 9 and the stopper 5 will not rotate. The purpose of this setting is to maintain the angle of the stopper 5.

[0052] As a preferred embodiment of the present invention, refer to Figures 4-7 The two connecting parts 6 located within the same outer casing 4 are driven by an adjustment mechanism to move synchronously in opposite directions. The adjustment mechanism includes a bearing seat 16 disposed inside the outer casing 4, and a lead screw 17 is rotatably connected to the bearing seat 16. The lead screw 17 has a positive thread and a negative thread, which are respectively threaded to the threaded sleeves on the two connecting parts 6. One end of the lead screw 17 extends to the outside of the outer casing 4, and a handwheel is provided at this end.

[0053] In order to adapt to the size of the PET sheet, first adjust the position of the outer shell 4 relative to the lower mold 2 so that the PET sheet is in the middle of the outer shell 4. Then rotate the handwheel to drive the screw to rotate, so that the connecting part 6 and the parts installed on the connecting part 6 move in the opposite direction until the stopper 5 is on both sides of the PET sheet. When limiting the PET sheet, operate the power mechanism 11 to move the stopper 5.

[0054] As a preferred embodiment of the present invention, the blocker 5 is a guide shaft, and a flexible part is provided on the outside of the blocker 5;

[0055] The bottom end of the stopper 5 is rotatably connected to a lead screw 18, which is threadedly connected to the moving shaft 9. Nuts 19 are threadedly connected to both the upper and lower sides of the lead screw 18 on the moving shaft 9.

[0056] During use, the stopper 5 rotates under the action of friction. The flexible part can reduce noise. At the same time, the height of the stopper 5 can be controlled by the screw 18 and nut 19, thereby adapting to the thickness of the PET sheet and improving ease of use.

[0057] As a preferred embodiment of the present invention, the outer casing 4 is provided with a locking element 20, which is a screw. After the position of the outer casing 4 is adjusted, the position of the outer casing 4 can be fixed by the screw.

[0058] As a preferred embodiment of the present invention, a rolling element 21 is provided on the moving shaft 9. The rolling element 21 contacts the inner wall of the guide hole 7. When the moving shaft 9 moves, the rolling element 21 rolls between the guide holes 7. Compared with direct sliding contact, the friction between the two is greatly reduced. This not only reduces the moving resistance and makes the movement smoother, but also significantly reduces the wear of the moving shaft 9 and the guide hole 7, and extends the service life of the equipment.

[0059] As a preferred embodiment of the present invention, the outer casing 4 is provided with an end cap 24, which serves to protect the internal components of the outer casing 4.

[0060] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A composite printed PET material die-cutting equipment, comprising a die (1) and a lower die (2), wherein the die (1) is capable of reciprocating up and down relative to the lower die (2); characterized in that, The die (1) is provided with a heating mechanism (3) for heating the die (1); Both sides of the lower mold (2) are equipped with limiting mechanisms for limiting the PET sheet material; The limiting mechanism includes a housing (4) that is slidably disposed on the lower mold (2), and the sliding direction of the housing (4) is perpendicular to the forward direction of the PET sheet. Both sides of the outer shell (4) are provided with a stopper (5), and both sides of the top of the outer shell (4) are provided with an opening (25). The opening (25) allows the stopper (5) to extend out. When it is not in working state, the top of the stopper (5) is inside the outer shell (4). When the PET sheet is limited, the top of the stopper (5) protrudes out of the top of the outer shell (4). The blocker (5) is driven by a drive mechanism, and the two drive mechanisms located in the same housing (4) are symmetrically arranged. The driving mechanism includes a connecting part (6) that is slidably installed inside the housing (4), and the sliding direction of the connecting part (6) is perpendicular to the forward direction of the PET sheet. A guide hole (7) is provided on the connecting part (6), and the guide hole (7) includes a vertical section and a horizontal section. The drive mechanism also includes a rotating shaft (8) rotatably mounted on the connecting part (6) and a moving shaft (9) passing through the guide hole (7). One end of the rotating shaft (8) is provided with a drive rod (10), and the other end of the drive rod (10) is slidably engaged with the moving shaft (9). The blocker (5) is disposed on one end of the moving shaft (9); One end of the rotating shaft (8) is provided with a power mechanism (11) for driving it to rotate.

2. The composite printed PET material die-cutting equipment as described in claim 1, characterized in that, The driving mechanism also includes a guide rail (12) fixed on the connecting part (6), a slider (13) sliding on the guide rail (12), a guide rail (14) fixed on the slider (13), and a slider (15) slidably connected to the guide rail (14). The other end of the moving shaft (9) is fixed on the slider two (15).

3. The composite printed PET material die-cutting equipment as described in claim 2, characterized in that, The two connecting parts (6) located within the same housing (4) are driven by an adjustment mechanism to move synchronously in opposite directions; The adjustment mechanism includes a bearing seat (16) disposed inside the housing (4), and a lead screw (17) is rotatably connected to the bearing seat (16). The lead screw (17) has a positive thread and a negative thread, and the positive thread and the negative thread are respectively threaded to the threaded sleeves on the two connecting parts (6). One end of the lead screw (17) extends to the outside of the housing (4), and a handwheel is provided at this end.

4. The composite printed PET material die-cutting equipment as described in claim 1, characterized in that, The blocker (5) is a guide shaft, and a flexible part is provided on the outside of the blocker (5); The bottom end of the stopper (5) is rotatably connected to the second lead screw (18), which is threadedly connected to the moving shaft (9), and the second lead screw (18) is threadedly connected to nuts (19) on both the upper and lower sides of the moving shaft (9).

5. The composite printed PET material die-cutting equipment as described in claim 1, characterized in that, The outer casing (4) is provided with a locking element (20).

6. The composite printed PET material die-cutting equipment as described in claim 1, characterized in that, A rolling element (21) is provided on the moving shaft (9), and the rolling element (21) contacts the inner wall of the guide hole (7).

7. The composite printed PET material die-cutting equipment as described in claim 1, characterized in that, Along the length direction of the drive rod (10), the drive rod (10) has an elongated hole (22), and the moving shaft (9) passes through the elongated hole (22).

8. The composite printed PET material die-cutting equipment as described in claim 7, characterized in that, The movable shaft (9) is provided with a second rolling element (23), which contacts the inner wall of the elongated hole (22).

9. The composite printed PET material die-cutting equipment as described in claim 1, characterized in that, The outer casing (4) is provided with end caps (24).

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