A knife-type marking press having a double marking knife

Abstract

The utility model belongs to but is not limited to the post -press paper product processing equipment technical field, especially the double -indentation cutter's knife indentation machine of indenting, including frame, the frame middle position sets up first rubber roll, second rubber roll and third rubber roll, first rubber roll and second rubber roll between setting first indentation cutter, second rubber roll and third rubber roll between setting second indentation cutter, the frame upper end sets up two eccentric shafts. The utility model is equipped with two indentation cutter simultaneously, to need the work of positive and negative indentation or indentation pressure dotted line, has improved work efficiency, has guaranteed indentation precision.

Description

TECHNICAL FIELD

[0001] The utility model belongs to but is not limited to the post-printed paper processing equipment technical field, especially to a double indentation cutter's knife indentation machine. BACKGROUND

[0002] The traditional indentation machine, only one indentation cutter / dotted line cutter (tooth line) can be installed in the machine, and only one direction indentation or dotted line (tooth shape) can be formed each time. If the forward and reverse indentation or indentation and dotted line (tooth line) need to be formed on the paper, the paper needs to be processed twice, and the paper is first pressed in the indentation machine and then re-processed. This method is low in efficiency and has a certain impact on the indentation accuracy.

[0003] Through comparison, it is found that a technical scheme for "creasing and folding integration" is disclosed, which describes an integrated creasing and folding device, including a creasing mechanism, a folding mechanism and a feeding and sensing control system, which can transport the paper to the folding unit after forming the indentation on the paper, and complete the subsequent folding operation.

[0004] Although the technical scheme improves the integration of creasing and folding, the creasing method is usually single horizontal indentation, and the fixed or reciprocating knife structure is adopted, which lacks flexibility in processing complex processing requirements such as forward and reverse indentation or indentation plus dotted line (such as tooth line). In addition, the control structure does not realize the synchronization of multiple indentation cutters, the depth fine adjustment and the intelligent cooperation with the folding equipment, so there is still a large space for improvement in efficiency, accuracy and equipment versatility. UTILITY MODEL CONTENTS

[0005] In view of the problems existing in the prior art, the utility model provides a double indentation cutter's knife indentation machine.

[0006] A double-slot indentation cutter includes a cutter positioning slot, an indentation cutter, a knife tip, a wide cutter slot, a narrow cutter slot, a handle fixing thread, a guide shaft and a return spring.

[0007] The cutter positioning slot is arranged on the upper and lower sides of the double-slot indentation cutter and is used for fixing and positioning the indentation cutter.

[0008] The indentation cutter corresponds to the cutter positioning slot, and the upper and lower indentation cutters are arranged on the right side of the cutter positioning slot and are used for indenting the paper.

[0009] The knife tip is arranged below the upper indentation cutter and is used for cutting into the paper to form an indentation.

[0010] The wide cutter slot and the narrow cutter slot are arranged above the lower indentation cutter and correspond to the position of the knife tip, and are used for forming indentations with different widths.

[0011] The handle fixing screw is arranged in the middle part of the side of the lower pressing mark cutter slot and is used for mounting the handle to facilitate the pulling and mounting use of the pressing mark cutter group.

[0012] The guide shaft is arranged on both sides of the cutter positioning slot and is used for guiding and stabilizing the movement of the pressing mark cutter.

[0013] The return spring is arranged on the guide shaft and is used for automatically returning the pressing mark cutter after completing the pressing mark.

[0014] Further, the design of the wide cutter slot and the narrow cutter slot enables the pressing mark cutter to form pressing marks with different widths according to different requirements.

[0015] Further, the design of the handle fixing screw enables the mounting and dismounting of the handle to be simple and convenient.

[0016] Further, the double-slot pressing mark cutter has a rotating function.

[0017] Further, the double-slot pressing mark cutter is connected with the paper feeding port of the folding machine through the conveying device, and the paper is sent into the folding machine from the paper feeding port of the folding machine.

[0018] Further, the conveying device is provided with a roller and a conveying belt.

[0019] Further, the conveying device is provided with a sensor at the connection position of the double-slot pressing mark cutter, the sensor is used for sensing the paper, and the roller and the conveying belt are started after the paper is sensed.

[0020] Further, the folding auxiliary wheel is arranged at the upper end support of the rack, the folding auxiliary wheel keeps a fixed distance with the first pressing mark cutter and the second pressing mark cutter, the folding auxiliary wheel is synchronously driven with the rubber roller synchronous wheel, and is used for guiding the pre-folding effect after the paper completes the pressing mark, so that the continuous function of the pressing mark and the folding is realized.

[0021] Further, the limit sleeve is arranged between the first pressing mark cutter and the second pressing mark cutter and the pressing mark depth adjusting screw, the limit sleeve is used for limiting the up-down displacement range of the pressing mark cutter in the upper end support of the rack, and the fixed action of the bearing is combined to ensure the accurate control of the pressing mark depth.

[0022] In combination with the above technical scheme and the solved technical problems, the technical scheme to be protected by the utility model has the following advantages and positive effects:

[0023] This invention proposes a dual-blade creasing machine, which employs a structural design with two creasing blades mounted on the same frame. This allows for simultaneous double-line creasing or a combination of creasing and dotted lines. Compared to traditional single-blade creasing equipment, this structure enables the processing of work orders requiring both forward and reverse creasing, or those requiring the addition of dotted lines during creasing, to be completed with a single paper feed. This avoids the inefficient operation of repeated paper feedings, thereby increasing overall work efficiency by more than double.

[0024] Regarding indentation accuracy, this invention achieves precise positioning and stable pressing of the indentation knife through the combination of eccentric shaft drive, proximity switch detection, and indentation depth adjustment screws, resulting in clear and consistent indentation lines. Whether it's common book cover flaps, page turn lines, and spine lines, or dotted tear lines on insurance policies, receipts, and other texts, this equipment can reliably achieve the desired processing results, effectively ensuring indentation accuracy and finished product quality.

[0025] In terms of practical application, this invention integrates the processes that originally required three separate machines—a creasing machine, a dotted-line creasing machine, and a folding machine—into a single machine, which can be directly connected to the folding machine. This not only reduces the number of machines and avoids paper transfer and manual intervention between multiple machines, but also allows creasing, dotted-line creasing, and folding to be completed in one operation, significantly shortening the production cycle and greatly improving the level of automation.

[0026] In terms of expected benefits and commercial value, this utility model can bring significant cost savings and efficiency improvements to market users. Firstly, it reduces equipment investment and maintenance costs; secondly, it reduces the number of operators and labor costs; and thirdly, it shortens the production cycle and increases delivery speed. This technical solution is particularly suitable for fields such as exam paper, invoice, contract document, and packaging printing, and can create sustainable economic value and a competitive market advantage for printing plants and related enterprises. Attached Figure Description

[0027] Figure 1 This is a structural diagram of a knife-type indentation machine with a double indentation knife provided in this embodiment of the utility model;

[0028] Figure 2 This is a front structural view of the knife-type indenter with dual indentation knives provided in this embodiment of the utility model;

[0029] Figure 3 This is a left-side structural diagram of the knife-type indenter with dual indentation knives provided in this embodiment of the utility model;

[0030] Figure 4 This is a structural diagram of the right side of the knife-type indenter with dual indentation knives provided in this embodiment of the utility model;

[0031] Figure 5 This is a diagram illustrating the common front and back creases on book covers;

[0032] Figure 6 is the indentation of the policy or the vice text schematic diagram;

[0033] Figure 7 is the schematic diagram of the conveying device and the paper folding machine provided by the embodiment of the utility model;

[0034] Figure 8 is the front view of the conveying device and the paper folding machine provided by the embodiment of the utility model;

[0035] In the figure: 1, rack; 2, first rubber roller; 3, second rubber roller; 4, third rubber roller; 5, first indentation cutter; 6, second indentation cutter; 7, eccentric shaft; 8, upper rubber roller; 9, lower rubber roller; 10, rubber roller synchronous wheel; 11, gear; 12, proximity switch; 13, synchronous wheel; 14, induction sheet; 15, bearing; 16, support; 17, indentation depth adjusting screw; 18, paper folding machine; 19, conveying device; 20, conveying belt; 21, roller. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the embodiment. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0037] As shown in Figure 1 The embodiment of the utility model provides a double-indentation cutter cutter indentation machine, including rack 1, the middle position of rack 1 is provided with first rubber roller 2, second rubber roller 3 and third rubber roller 4, first indentation cutter 5 is arranged between first rubber roller 2 and second rubber roller 3, second indentation cutter 6 is arranged between second rubber roller 3 and third rubber roller 4;Two eccentric shafts 7 are arranged on the upper end of rack 1.

[0038] As shown in Figure 2 Rubber roller is composed of upper rubber roller 8 and lower rubber roller 9, the left end of upper rubber roller 8 and lower rubber roller 9 is respectively provided with rubber roller synchronous wheel 10, and the right end of upper rubber roller 8 and lower rubber roller 9 is respectively provided with gear 11.

[0039] First indentation cutter 5 and second indentation cutter 6 are fixed on the support 16 on the upper end of rack 1 through bearing 15 and indentation depth adjusting screw 17.

[0040] As shown in Figure 3 The left end of two eccentric shafts 7 is respectively provided with proximity switch 12, as shown in Figure 4 The right end is respectively provided with synchronous wheel 13.

[0041] The left end of two eccentric shafts 7 is respectively provided with induction sheet 14.

[0042] The indentation cutter can be replaced by a dotted line cutter.

[0043] The utility model embodiment provides a kind of double indentation cutter's cutter indentation machine, as shown in Figure 1 It is installed on rack 1.The middle part of rack 1 is sequentially provided with first rubber roller 2, second rubber roller 3 and third rubber roller 4, first indentation cutter 5 is installed between first rubber roller 2 and second rubber roller 3, second indentation cutter 6 is installed between second rubber roller 3 and third rubber roller 4, to form two indentation channels.The upper end of rack 1 is symmetrically installed with two eccentric shafts 7, for driving indentation cutter reciprocating motion up and down, realizes indentation action.

[0044] As shown in Figure 2 Each group of rubber rollers is composed of upper rubber roller 8 and lower rubber roller 9.The left end of upper rubber roller 8 and lower rubber roller 9 is installed with rubber roller synchronous wheel 10, and the right end is installed with gear 11.Rubber roller synchronous wheel 10 realizes power input through synchronous belt, to ensure that upper rubber roller 8 and lower rubber roller 9 rotate synchronously.Gear 11 is meshed with each other, so that paper can be stably clamped and conveyed when passing through, to avoid deviation and slip.

[0045] As shown in Figure 3 First indentation cutter 5 and second indentation cutter 6 are fixed on bracket 16 by bearing 15 and indentation depth adjusting screw 17.Bracket 16 is installed at the upper end position of rack 1, to form the fixed support structure of indentation cutter and rubber roller.By rotating indentation depth adjusting screw 17, the depth of indentation cutter can be changed, to adapt to paper of different thickness and indentation requirements of different processes.

[0046] The left end of two eccentric shafts 7 is installed with proximity switch 12, and is provided with inductive sheet 14, and the right end is installed with synchronous wheel 13.Eccentric shaft 7 rotates one circle under the drive of motor, and indentation cutter is pressed from the highest point to the lowest point, and then returns to the highest point, to complete a complete indentation cycle.Proximity switch 12 cooperates with inductive sheet 14, to detect the rotating position of eccentric shaft 7 in real time, to ensure that indentation cutter action is consistent with paper conveying position.

[0047] In actual work, paper is conveyed into equipment by first rubber roller 2, forms first indentation by first indentation cutter 5, and completes second indentation by continuing to move to the position of second indentation cutter 6.Paper keeps uniform motion under the action of upper and lower rubber rollers, and indentation process is stable and reliable.If dotted line processing is needed, first indentation cutter 5 or second indentation cutter 6 can be replaced by dotted line cutter, to realize dotted line indentation processing of policy, bill or other documents with vice link.The device realizes the free switching of straight line indentation and dotted line indentation through the structure design of one machine with multiple uses, which significantly improves production efficiency and application range.

[0048] The knife type indentation machine of the double-indentation cutter is mainly used for precise indentation operation on paperboard or other materials. The material to be processed enters the indentation machine through the feeding device on the rack 1, and sequentially passes through the first rubber roller 2, the second rubber roller 3 and the third rubber roller 4 arranged at the middle position of the rack 1. The first indentation cutter 5 is located between the first rubber roller 2 and the second rubber roller 3, and the second indentation cutter 6 is located between the second rubber roller 3 and the third rubber roller 4. When the material passes through the first indentation cutter 5 and the second indentation cutter 6, two indentations are formed at the predetermined positions. This design enables two precise indentation lines to be realized at one time, greatly improving the production efficiency. In the processing process, the upper rubber roller 8 and the lower rubber roller 9 are responsible for clamping the material and realizing synchronous rotation through the cooperation of the synchronous wheel 10 and the gear 11, so as to ensure that the material passes through the indentation cutter stably. Since the synchronization of the rubber rollers controls the tension and speed of the material, the stability and precision of the indentation process are ensured. In addition, the indentation cutter is fixed with the bracket 16 at the upper end of the rack 1 through the bearing 15, and the depth is adjusted through the indentation depth adjusting screw 17, so that the operator can adjust the indentation depth according to the thickness and processing requirements of the material, so as to realize the best processing effect. The left end of the two eccentric shafts 7 of the indentation machine is provided with a proximity switch 12 and an inductive sheet 14, when the material reaches a specific position, the inductive sheet 14 triggers the proximity switch 12, so that the synchronous action of the indentation cutter and the rubber roller of the indentation machine is more precise. In addition, the synchronous wheel 13 at the right end ensures the synchronous rotation of the two eccentric shafts, and maintains the coordination of the whole system.

[0049] The paper enters the equipment by the first rubber roller 2, and the head position of the paper is positioned by the optical fiber sensor, according to the length position of the first indentation cutter 5 or the second indentation cutter 6 set by the user in the touch screen, the servo motor controls the rotating distance of the rubber roller, and stops after reaching the length position. At this time, the eccentric shaft 7 of the first indentation cutter 5 or the second indentation cutter 6 is driven to rotate by the corresponding motor of the synchronous wheel 13, so that the eccentric shaft 7 rotates a circle from the highest point, and the inductive sheet 14 cooperates with the proximity switch 12 to control the eccentric shaft 7 to return to the highest point. The eccentric shaft 7 completes a rotation process, which makes the first indentation cutter 5 or the second indentation cutter 6 press down from the highest point to the lowest point, and then return to the highest point, and complete an indentation action at the lowest point.

[0050] After the indentation action is completed, the motor continues to drive the rubber roller group to rotate, and the paper is conveyed to the next set indentation position, and the positioning, pressing and resetting actions are repeated until all the preset indentation processing is completed, and finally the paper is conveyed out of the equipment by the third rubber roller 4.

[0051] Finally, it is worth noting that the indentation knife can be replaced by a dotted line knife according to different processing needs to adapt to different types of indentation requirements. This flexible structure design enables the indentation machine to complete straight line indentation and dotted line processing on the same equipment, meeting the diversified production needs. Overall, the utility model discloses a double-indentation-knife structure and an accurate control system composed of eccentric shaft 7, inductive sheet 14 and proximity switch 12, which ensures the stability and indentation accuracy of the indentation machine in high-speed processing.

[0052] As shown in Figure 5 , the commonly used double-indentation-knife (positive and negative indentation) is a book cover with a cutting line, a turning line and a spine line; as shown in Figure 6 , the other case of indentation + dotted line (tooth line) at the same time is an insurance policy or other text that needs to tear a copy.

[0053] As shown in Figure 8 , the paper outlet of the double-groove indentation knife is connected with the conveying device 19, and the conveying device 19 is further connected with the paper inlet of the folding machine 18, forming a continuous paper processing path. After the indentation or dotted line processing is completed, the paper is conveyed to the folding machine 18 through the conveying device 19, ensuring seamless connection between the processing procedures.

[0054] As shown in Figure 7 , the conveying device 19 is internally provided with a conveying belt 20, and the conveying belt 20 is supported at the front and rear ends by rollers 21. The conveying belt 20 is arranged obliquely, which can smoothly convey the paper from the paper outlet of the double-groove indentation knife to the paper inlet of the folding machine 18. The rollers 21 keep close contact with the conveying belt 20 during transmission, ensuring smooth operation of the conveying belt 20 and preventing the paper from slipping or deviating.

[0055] A sensor is arranged at the connection between the conveying device 19 and the double-groove indentation knife, which is used to detect the arrival of the paper. When the sensor detects the paper, it will send a control signal to start the rollers 21 to drive the conveying belt 20 to run. This design can avoid the idling of the conveying device in the paperless state, improve the energy efficiency, and ensure the accurate position of the paper before entering the folding machine 18.

[0056] In actual work, the paper is first processed by the double-groove indentation knife, and then enters the conveying device 19. When the sensor confirms the arrival of the paper, the rollers 21 and the conveying belt 20 cooperate to uniformly feed the paper into the paper inlet of the folding machine 18. After receiving the paper, the folding machine 18 immediately enters the folding process, realizing continuous production of indentation, dotted line and folding, and improving the overall automation level and production efficiency.

[0057] To address the issue of integrating the crease and dotted line folding functions, a folding auxiliary wheel 18 is added to the upper support 16 of the frame 1. The folding auxiliary wheel 18 maintains a fixed distance from the first and second creasing knives 5 and 6. As the paper passes through, it is guided by the folding auxiliary wheel 18 to create a pre-fold effect after creasing. The folding auxiliary wheel 18 is synchronously driven with the rubber roller synchronous wheel 10 to prevent unstable paper feeding, thus achieving continuous creasing and folding functions in a single paper feed.

[0058] To address the coordination issue between the eccentric shaft 7, the sensing element 14, and the synchronous pulley 13, a transmission link 19 is installed between the two eccentric shafts 7. One end of the transmission link 19 meshes with the synchronous pulley 13, and the other end connects to the sensing element 14, which maintains a corresponding relationship with the proximity switch 12. In this way, the rotation of the eccentric shaft 7 can stably drive the synchronous pulley 13 and the sensing element 14 through the transmission link 19, realizing a closed-loop circuit for eccentricity detection and synchronous control. This ensures the reliability of indentation depth adjustment and position detection, and avoids output instability caused by structural loosening.

[0059] To further improve indentation accuracy, a limiting sleeve 20 is added between the first indentation knife 5, the second indentation knife 6, and the indentation depth adjusting screw 17. The limiting sleeve 20 limits the vertical displacement range of the indentation knife within the upper support 16 of the frame 1, ensuring that the indentation knife does not become excessively loose or excessively tight during adjustment. Combined with the fixing effect of the bearing 15, the indentation depth can be precisely controlled. Through these improvements, the overall structure achieves integration of "indentation + dotted line folding," and the technical solution is feasible and meets the support requirements of the instruction manual.

[0060] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the technical scope disclosed in this utility model, and within the spirit and principles of this utility model, should be included within the protection scope of this utility model.

Claims

1. A knife-type embossing machine with dual embossing knives, characterized in that, The machine includes a frame, with a first rubber roller, a second rubber roller, and a third rubber roller arranged in the middle of the frame. A first indentation knife is arranged between the first rubber roller and the second rubber roller, and a second indentation knife is arranged between the second rubber roller and the third rubber roller. Two eccentric shafts are arranged at the upper end of the frame. The first and second indentation knives are fixed to the bracket at the upper end of the frame by bearings and indentation depth adjustment screws; A limiting sleeve is provided between the first and second indentation knives and the indentation depth adjustment screw. The limiting sleeve is used to limit the vertical displacement range of the indentation knives in the upper support of the frame. Combined with the fixing effect of the bearing, it ensures precise control of the indentation depth.

2. The knife-type embossing machine with dual embossing knives as described in claim 1, characterized in that, The rubber roller consists of an upper rubber roller and a lower rubber roller. Synchronizing pulleys are provided at the left ends of the upper and lower rubber rollers, and gears are provided at the right ends of the upper and lower rubber rollers.

3. The knife-type embossing machine with dual embossing knives as described in claim 1, characterized in that, The left ends of the two eccentric shafts are equipped with proximity switches, and the right ends are equipped with synchronizing pulleys.

4. The knife-type embossing machine with dual embossing knives as described in claim 1, characterized in that, Induction plates are respectively installed at the left ends of the two eccentric shafts.

5. The knife-type embossing machine with dual embossing knives as described in claim 1, characterized in that, The indentation tool can be replaced with a dotted line tool.

6. The knife-type embossing machine with dual embossing knives according to claim 1, characterized in that, A folding auxiliary wheel is provided at the upper support of the frame. The folding auxiliary wheel maintains a fixed distance from the first creasing knife and the second creasing knife. The folding auxiliary wheel is synchronously driven with the rubber roller synchronous wheel. It is used to guide the paper to form a pre-folding effect after the paper has been creasing, thereby realizing the continuous function of creasing and folding.

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