A raw material anti-reversing device for flat die machine
By setting up a paper detection component and a raw material leveling component at the paper feeding end of the flat die machine, the problem of inaccurate judgment of the orientation of the printing base paper is solved, ensuring accurate cutting of the printing base paper and reducing raw material waste and production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI LONGDA PACKING PROD CO LTD
- Filing Date
- 2025-06-28
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional flatbed printing presses have difficulty accurately determining the orientation of the printing paper during the paper feeding process, leading to incorrect orientation, material waste, and increased production costs.
A paper feeding detection component is installed at the paper feeding end of the flat die machine. The anti-reverse detection probe detects the black edges and corners of the printing base paper, and the alarm promptly alerts errors. The raw material leveling component ensures that the paper is fed into the die flat, avoiding inaccurate cutting.
It enables precise judgment of the orientation of the printing paper and flat insertion into the mold, reducing raw material waste, improving production quality and efficiency, and lowering production costs.
Smart Images

Figure CN224449624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging paper production technology, and in particular to a device for preventing reverse feeding of raw materials in a flat die machine. Background Technology
[0002] A flat die cutter is a device used to flat-press and die-cut printed paper. It cuts or creases the paper into specific shapes by using the planar pressure of the upper and lower dies to meet the production needs of industries such as packaging and printing.
[0003] Traditional flatbed die-cutting machines rely heavily on manual intervention to determine the correct orientation of the printing paper during the paper feeding process. However, the printing paper often has complex and diverse patterns, making it difficult for manual operators to consistently and efficiently determine the correct orientation over long periods of operation. As a result, errors in the orientation of the printing paper often go unnoticed until after the flatbed die-cutting machine has finished cutting the paper. This leads to a significant increase in material consumption and, consequently, production costs.
[0004] Prior art 1 (Chinese patent application number CN202223324455.8, application date 2022-12-12) discloses a flat die-cutting machine for carton production. The top of the worktable is fixed by a rod connected to a top plate. The cylinder output end on the top plate is connected to a die-cutting plate for die-cutting. There are two symmetrical lower bearing components and a lower transmission roller on the worktable. An upper transmission roller that can be raised and lowered is provided above it. There is an adjustment component on the top of the worktable to adjust the height of the upper transmission roller to adapt to different thicknesses of cardboard, ensure smooth conveying, avoid slippage, and improve die-cutting efficiency.
[0005] Prior art 2 (Chinese patent application number CN201610734245.6, application date 2016-08-25) discloses a novel roller-type flat die machine. The machine frame is supported by the main body, and the machine body is installed on the frame. The top of the machine body is equipped with a lower cover and an upper cover. The side is provided with a hopper for material discharge. The machine body is equipped with a drive shaft through multiple support devices. The lower end of the drive shaft is connected to a transmission device to obtain power. The upper end is equipped with a pressure roller device through a shaft head seat. The pressure roller device cooperates with the bottom die, so that the equipment actively adapts to the biting movement characteristics of the raw materials for biomass pellet production, effectively reducing die wear, enhancing the structure's ability to withstand high loads, thereby improving production efficiency and achieving the production goal of high output and low consumption. Utility Model Content
[0006] The purpose of this invention is to provide a device for preventing reverse feeding of raw materials in a flat die machine, so as to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention provides the following technical solution: it includes a flat die machine body, a paper pushing module is provided at the paper feeding end of the flat die machine body, a raw material leveling component is provided on the paper pushing module, a frame is provided on the side of the paper pushing module away from the flat die machine body, a sprocket and chain drive module is provided inside the frame, and a paper feeding detection component is provided on the sprocket and chain drive module.
[0008] The paper feeding detection component includes a mounting frame 1 set on the top surface inside the frame, a detection feedback module set at the bottom of the mounting frame 1, an alarm set inside the detection feedback module, a mounting rod 1 set at the bottom of the detection feedback module, and an anti-reverse detection probe set on one side of the mounting rod 1.
[0009] As a preferred embodiment of this utility model, the sprocket and chain drive module is provided with a paper feeder, the paper feeder is provided with a tray, and the tray is provided with printing paper.
[0010] As a preferred embodiment of this invention, one corner of the printing base paper is printed in black.
[0011] As a preferred embodiment of this invention, the other corner of the printing base paper is not printed with black.
[0012] As a preferred embodiment of this utility model, the raw material leveling component includes a second mounting rod disposed on the top surface of the frame, an upper abutting wheel disposed in the middle of the second mounting rod, a third mounting rod disposed at the connection between the frame and the paper pushing module, a number of pairs of transition leveling wheels disposed on the third mounting rod, a second mounting frame disposed on the paper pushing module, and a number of flattening wheels disposed on the second mounting frame.
[0013] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:
[0014] 1. This utility model, by setting up a paper feeding detection component and utilizing an anti-reverse detection probe set on the paper feeder, can accurately detect the black corner on one side of the printing paper. If the black corner of the printing paper is not detected, it means that the paper has been placed backwards. Therefore, it can quickly determine whether the orientation of the printing paper is correct. Once a reverse placement is detected, the detection feedback module can immediately control the entire device to stop operating. At the same time, its internal alarm will promptly issue an alarm to remind the operator, effectively avoiding the waste of raw materials caused by inaccurate subsequent cutting due to reverse placement of the printing paper. This ensures the accuracy of the production process and the efficient use of raw materials, and greatly improves production quality and efficiency.
[0015] 2. This utility model, by setting up a raw material leveling component, allows the upper abutting wheel in the middle of the mounting rod two on the top surface of the frame to initially abut and position the printing paper, preventing it from shifting or wrinkling during movement. Secondly, several pairs of transition leveling wheels on the mounting rod three at the connection between the frame and the paper pusher module can perform transition leveling treatment on the printing paper, ensuring that it remains flat and stable during movement. In addition, several pressing rollers on the paper pusher module perform final flattening on the printing paper. These layers of protection ensure that the printing paper can enter the flat die machine body flat, effectively avoiding the problem of inaccurate cutting caused by wrinkles, ensuring the accuracy of printing paper cutting, and reducing material waste. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0018] Figure 3 This is a schematic diagram of the paper feeding detection component of this utility model;
[0019] Figure 4 This is a schematic diagram of the printing paper structure in the paper feeding detection component of this utility model;
[0020] Figure 5 This is a schematic diagram of the raw material leveling component structure of this utility model.
[0021] Figure reference numerals: 1. Flat die machine body; 2. Paper pusher module; 4. Raw material flattening component; 41. Mounting rod 2; 42. Upper abutment wheel; 43. Mounting rod 3; 44. Transition flattening wheel; 45. Mounting frame 2; 46. Pressing wheel; 5. Machine frame; 6. Sprocket and chain drive module; 7. Paper feeding detection component; 71. Paper feeder; 72. Tray; 73. Printing base paper; 74. Mounting frame 1; 75. Detection feedback module; 76. Mounting rod 1; 77. Anti-reverse detection probe; 78. Black corner. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0023] like Figures 1-5As shown, this utility model proposes a material anti-reverse feeding device for a flat die machine. It includes a flat die machine body 1, which provides a cutting function and is the place where the printing paper 73 is finally processed. A paper pushing module 2 is provided at the paper feeding end of the flat die machine body 1. The paper pushing module 2 is responsible for pushing the printing paper 73 to the paper feeding end of the flat die machine body 1 to ensure that the paper can smoothly enter the cutting area. A material leveling component 4 is provided on the paper pushing module 2. A frame 5 is provided on the side of the paper pushing module 2 away from the flat die machine body 1. A sprocket and chain drive module 6 is provided in the frame 5. The sprocket and chain drive module 6 drives the paper feeder 71 to rise or fall, which facilitates the feeding of the printing paper 73 and improves production efficiency. A paper feeding detection component 7 is provided on the sprocket and chain drive module 6.
[0024] The paper loading detection component 7 includes a mounting bracket 74 mounted on the top surface of the frame 5. The mounting bracket 74 provides a mounting base for the detection feedback module 75. The detection feedback module 75 is located at the bottom of the mounting bracket 74 and contains an alarm. When the anti-reverse detection probe 77 detects that the printing paper 73 is placed in reverse, the detection feedback module 75 controls the entire device to stop operating, and the alarm will sound to alert the operator. The bottom of the detection feedback module 75 is equipped with a mounting rod 76, which provides a mounting base for the anti-reverse detection probe 77. The anti-reverse detection probe 77 is located on one side of the mounting rod 76. The anti-reverse detection probe 77 detects the printing paper 73 to determine whether its orientation is correct. If a black corner 78 is detected, it indicates that the orientation of the printing paper 73 is correct. If a white area is detected, it means that the printing paper 73 is placed in reverse.
[0025] The sprocket and chain drive module 6 is equipped with a paper rack 71, which is used to carry the pallet 72 and the stacked printing paper 73. The pallet 72 is provided on the paper rack 71, and the printing paper 73 is placed on the pallet 72. The pallet 72 is used to carry the stacked printing paper 73.
[0026] The printing base paper 73 has a black corner 78 on one side, which serves as a marker to distinguish whether the orientation of the printing base paper 73 is correct.
[0027] The raw material leveling component 4 includes a second mounting rod 41 mounted on the top surface of the frame 5. An upper abutting wheel 42 is positioned in the middle of the second mounting rod 41, providing a mounting base for the upper abutting wheel 42. This allows the upper abutting wheel 42 to initially abut and position the printing paper 73, ensuring stability during the paper-pushing process. A third mounting rod 43 is located at the junction of the frame 5 and the paper-pushing module 2. Several pairs of transition leveling wheels 44 are mounted on the third mounting rod 43, providing a mounting base for the transition leveling wheels 44 and ensuring smooth transitions. The roller 44 can smooth the printing paper 73, preventing wrinkles. The paper pusher module 2 is equipped with a second mounting frame 45, which has several flattening rollers 46. The second mounting frame 45 provides mounting support for the flattening rollers 46, ensuring that the flattening rollers 46 can finally flatten the printing paper 73. This ensures that the printing paper 73 can enter the flat die machine body 1 smoothly and can be accurately cut, avoiding inaccurate cutting due to incorrect orientation or wrinkles, thus preventing material waste.
[0028] In use, the operator first places the stacked printing paper 73 along with the tray 72 onto the paper feeder 71 of the paper feed detection assembly 7. Then, the sprocket and chain drive module 6 is activated, causing the paper feeder 71 to lift the printing paper 73 until the top layer of the stacked printing paper 73 contacts the anti-reverse detection probe 77. Except for the areas with printed patterns, the printing paper 73 has a black corner 78 printed on one corner, and the rest is a blank area. The anti-reverse detection probe 77 will detect the printing paper 73. If the black corner 78 is detected, it indicates that the printing paper 73 is in the correct orientation. If a white area is detected, it means that the printing paper 73 is placed backwards. Once backwards is detected, the detection feedback module 75 will immediately stop the operation of the entire device, and its internal alarm will sound an alarm to remind the operator. The operator then rotates the printing paper 73 180 degrees so that the black corner 78 is aligned with the anti-reverse detection probe 77, and the entire device can continue to operate.
[0029] Next, the paper pushing module 2 and the raw material leveling component 4 begin to work. The upper abutting roller 42, located in the middle of the mounting rod 2 41 on the top surface of the frame 5, provides initial abutment and positioning for the printing paper 73, preventing it from shifting or wrinkling during movement. At the junction of the frame 5 and the paper pushing module 2, several pairs of transition leveling rollers 44, located on the mounting rod 3 43, perform transition leveling on the printing paper 73, ensuring that it remains flat during movement. Finally, the printing paper 73 is flattened by several pressing rollers 46 on the paper pushing module 2, ensuring that the printing paper 73 can enter the flat die machine body 1 flat and that the printing paper 73 can be accurately cut, avoiding inaccurate cutting due to incorrect orientation or wrinkles, thus preventing material waste.
[0030] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A flat die machine stock anti-reversing device comprising: A flat die machine body (1) is provided with a paper pushing module (2) at the paper feeding end of the flat die machine body (1). The paper pushing module (2) is provided with a raw material leveling component (4). A frame (5) is provided on the side of the paper pushing module (2) away from the flat die machine body (1). A sprocket and chain drive module (6) is provided inside the frame (5). A paper feeding detection component (7) is provided on the sprocket and chain drive module (6). The paper feeding detection component (7) includes a mounting bracket (74) set on the top surface inside the frame (5). A detection feedback module (75) is set at the bottom of the mounting bracket (74). An alarm is set inside the detection feedback module (75). A mounting rod (76) is set at the bottom of the detection feedback module (75). An anti-reverse detection probe (77) is set on one side of the mounting rod (76).
2. A material anti-reversing device for a flat die machine according to claim 1, characterized in that: The sprocket and chain drive module (6) is provided with a paper rack (71), the paper rack (71) is provided with a tray (72), and the tray (72) is provided with printing paper (73).
3. A material anti-reversing device for a flat die machine according to claim 2, characterized in that: The printing base paper (73) has a black corner (78) on one side.
4. A material anti-reversing device for a flat die machine according to claim 3, characterized in that: The raw material leveling component (4) includes a second mounting rod (41) set on the top surface inside the frame (5), an upper abutting wheel (42) set in the middle of the second mounting rod (41), a third mounting rod (43) set at the connection between the frame (5) and the paper pushing module (2), a number of pairs of transition leveling wheels (44) set on the third mounting rod (43), a second mounting frame (45) set on the paper pushing module (2), and a number of flattening wheels (46) set on the second mounting frame (45).