Indentation folding machine

Abstract

The invention discloses an indentation folding machine. The indentation folding machine comprises an indentation mechanism and a folding mechanism which are sequentially arranged along a paper conveying path; the creasing mechanism comprises two paper feeding rollers, two creasing rollers and two paper discharging rollers which are sequentially and rotatably arranged along a paper conveying path; an indentation concave die and an indentation convex die which can form indentations on paper after being matched with each other are respectively arranged on the two indentation rollers; the folding mechanism comprises a folding roller assembly connected with the paper outlet end of the creasing mechanism, a folding groove is formed in the paper outlet end of the folding roller assembly, and the folding groove is provided with an opening facing the folding roller assembly so that creased paper can enter the folding groove. According to the paper folding device, indentations can be formed in the conveying and moving process of paper, conveying does not need to be suspended during indentation, the paper subjected to indentation is directly conveyed to the folding mechanism to be folded, the folding precision is guaranteed, the machining continuity is kept, the machining efficiency is effectively improved, and the finished product quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of paper creasing and folding equipment, in particular to a creasing and folding machine. Background Art

[0002] In the existing paper processing, various patterns are printed on the paper surface according to actual needs; when the paper is thick or heavy, direct folding can easily cause the paper surface to break and damage the pattern on the paper surface; for this reason, for thicker paper, it is generally necessary to indent the paper first and then fold it. The indentation can avoid the paper surface from breaking during folding, effectively ensuring the integrity of the pattern on the paper surface.

[0003] In paper production, creasing and folding are independent processing steps, which are usually completed separately by creasing machines and folding machines. After creasing, the creasing paper needs to be manually transferred to the folding machine for folding. The creasing machines and folding machines have single functions, which not only increases the labor intensity, but also the paper products cannot be creased and folded continuously. The processing continuity is low, which accordingly affects the overall processing efficiency of the paper products. Folding errors are prone to occur after transfer, affecting the quality of the finished product. Summary of the invention

[0004] The object of the present invention is to provide a creasing and folding machine which can continuously perform creasing and folding processes, thereby improving the overall processing efficiency of paper products and improving the quality of finished products.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A creasing and folding machine comprises a creasing mechanism and a folding mechanism which are sequentially arranged along a paper conveying path;

[0007] The creasing mechanism comprises two paper feed rollers, two creasing rollers and two paper discharge rollers which are rotatably arranged in sequence along the paper conveying path; a paper feeding gap for paper to pass through is formed between the two paper feed rollers, between the two creasing rollers and between the two paper discharge rollers; the two creasing rollers are respectively provided with a creasing concave mold and a creasing convex mold which can form a creasing on the paper after cooperating with each other;

[0008] The folding mechanism comprises a folding roller assembly connected to the paper outlet end of the creasing mechanism, a folding groove is arranged at the paper outlet end of the folding roller assembly, and the folding groove has an opening facing the folding roller assembly for the creasing paper to enter the folding groove.

[0009] On the basis of the above technical solution, the present invention can be improved as follows:

[0010] Furthermore, the creasing die comprises a die sleeve sleeved on one of the creasing rollers, the die sleeve is provided with an elongated groove on the outer circumference, and the elongated groove is parallel to the axis of the creasing roller; the creasing punch comprises a die sleeve sleeved on the other creasing roller, the die sleeve is provided with an elongated protrusion on the outer circumference, and the elongated protrusion is parallel to the axis of the creasing roller; when the two creasing rollers rotate, the elongated protrusion and the elongated groove can cooperate with or separate from each other.

[0011] Furthermore, there are at least two folding grooves, one of which is arranged obliquely downward toward the creasing mechanism, and the other adjacent folding groove is arranged obliquely upward toward the creasing mechanism; each folding groove is provided with a movable limit plate, and the moving direction of the limit plate is parallel to the moving direction of the paper in the folding groove.

[0012] Furthermore, a ball screw is provided in each folding groove, and the ball screw is connected to the limit plate and drives the limit plate to move in the folding groove.

[0013] Furthermore, each of the folding slots is provided with a baffle, the protruding end of the baffle protrudes from the opening of the folding slot close to the folding roller assembly, and the protruding end of the baffle is bent to form a guide portion for guiding the paper to enter the folding slot.

[0014] Furthermore, the folding roller assembly includes a first folding roller, a second folding roller and a third folding roller which are rotatably arranged in sequence along the paper conveying direction, the first folding roller and the second folding roller are arranged horizontally at the same height, and the third folding roller is located below the second folding roller.

[0015] Furthermore, a pair of paper guides are arranged between the folding roller assembly and the creasing mechanism, and a guide channel for guiding the horizontal movement of paper is formed between the pair of paper guides; and a rotatable paper guide roller is arranged above the first folding roller.

[0016] Furthermore, the creasing and folding machine also includes a paper supply mechanism arranged at the paper feeding end of the creasing mechanism, the paper supply mechanism includes a support frame with a paper trough formed inside, the paper trough has a conveying port connected to the creasing mechanism, and a paper discharge port for loading paper into the paper trough; a liftable lifting platform is provided in the paper trough, and a paper suction device located above the lifting platform that can absorb and convey paper.

[0017] Furthermore, the paper trough is provided with a paper blowing device at the conveying port, and the paper blowing device includes a fan fixing plate, a fan arranged on the fan fixing plate, and an air guide groove connected to the air outlet end of the fan; an air guide cavity is formed inside the air guide groove, and a plurality of air outlets connected to the air guide cavity are arranged on the side of the air guide groove facing the paper.

[0018] Furthermore, the creasing folder also includes a paper receiving mechanism arranged at the paper output end of the folding mechanism, and the paper receiving mechanism includes a paper receiving tray, a paper output board and a paper pressing wheel arranged in sequence from bottom to top; a conveyor belt for conveying the folded paper along the paper output board surface to the paper receiving tray is provided on the paper output board, and the paper pressing wheel is located on the paper feeding path of the conveyor belt.

[0019] Compared with the prior art, the technology of the present invention has the following advantages:

[0020] The present invention is provided with a creasing mechanism and a folding mechanism, the creasing mechanism comprises two creasing rollers, and the two creasing rollers are respectively provided with a creasing die and a creasing punch. When the two creasing rollers rotate, the creasing die and the creasing punch can cooperate with each other, and the paper can be creasing during the conveying and moving process without pausing the conveying during the creasing. The paper after creasing is directly conveyed to the folding mechanism for folding, and no manual transportation is required, thereby ensuring the folding accuracy, maintaining the processing continuity, effectively improving the processing efficiency, and ensuring the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a structural schematic diagram of the creasing folding machine in the embodiment;

[0023] Figure 2 It is a schematic diagram of the paper feeding side structure of the paper feeding mechanism after removing part of the supporting frame in the embodiment;

[0024] Figure 3 It is a schematic diagram of the paper discharge side structure of the paper feeding mechanism after removing part of the support frame in the embodiment;

[0025] Figure 4 It is a structural schematic diagram of the indentation mechanism after some vertical plates are removed in the embodiment;

[0026] Figure 5 for Figure 4 A local enlarged view of point A in FIG.

[0027] Figure 6 It is a structural schematic diagram of the folding mechanism and the paper delivery mechanism in the embodiment;

[0028] Figure 7 It is a front view of the folding mechanism and the paper receiving mechanism in the embodiment.

[0029] Markings on the attached drawings: 1-support frame, 2-paper slot, 3-lifting platform, 4-fan, 5-air guide slot, 51-air outlet, 6-vertical plate, 7-paper feed roller, 8-paper outlet roller, 9-first indentation roller, 10-second indentation roller, 11-indentation die, 12-indentation punch, 13-support plate, 14-first folding slot, 15-second folding slot, 16-first limit plate, 17-second limit plate, 18-first ball screw, 19-second ball screw, 20-first baffle, 21-second baffle, 22-first folding roller, 23-second folding roller, 24-third folding roller, 25-paper guide board, 26-paper guide roller, 27-paper collection tray, 28-paper outlet board, 29-paper pressure wheel, 30-conveyor belt, 31-fan fixing plate, 32-negative pressure conveyor belt. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] See also Figures 1 to 7 This embodiment relates to a creasing and folding machine, which includes a paper feeding mechanism, a creasing mechanism, a folding mechanism, and a paper receiving mechanism which are arranged in sequence.

[0032] The paper feeding mechanism comprises a support frame 1, wherein a paper slot 2 for accommodating paper is formed inside the support frame 1, one end of the paper slot 2 is connected to the creasing mechanism and forms a conveying port, and the paper slot 2 forms a paper discharge port at the end away from the creasing mechanism; a lift platform 3 which can be raised and lowered, and a paper suction device located above the lift platform 3 are provided in the paper slot 2; paper is loaded into the paper slot 2 through the paper discharge port, lifted from bottom to top by the lift platform 3, and is conveyed to the crease mechanism after being sucked sheet by sheet by the paper suction device; a paper blowing device is provided at the conveying port of the paper slot 2, and the paper blowing device is used to blow up the paper stacked on the top so that the paper suction device can suck the paper sheet by sheet.

[0033] The paper suction device is a negative pressure conveyor belt 32 in the prior art. The negative pressure conveyor belt 32 has a plurality of negative pressure holes, and utilizes negative pressure to absorb and convey the paper.

[0034] The paper blowing device includes a fan fixing plate 31, a fan 4 arranged on the fan fixing plate 31, and an air guide groove 5 connected to the air outlet end of the fan 4; an air guide cavity is formed inside the air guide groove 5, and a plurality of air outlets 5a connected to the air guide cavity are arranged on the side of the air guide groove 5 facing the paper; the fan 4 blows air into the air guide groove 5 to form an airflow, and after the airflow is guided by the air guide cavity, it is blown out from the air outlet 5a on the air guide groove 5 to blow up the paper stacked on the top.

[0035] The creasing mechanism comprises two vertical plates 6 arranged opposite to each other, and two paper feed rollers 7, two creasing rollers and two paper discharge rollers 8 rotatably arranged between the two vertical plates 6 and arranged in sequence along the paper conveying path; the two paper feed rollers 7 are opposite to each other in vertical direction and rotate in opposite directions, the two creasing rollers are opposite to each other in vertical direction and rotate in opposite directions, and the two paper discharge rollers 8 are opposite to each other in vertical direction and rotate in opposite directions; after the paper passes through between the two paper feed rollers 7 and completes creasing between the two creasing rollers, the paper is discharged from between the two paper discharge rollers 8; a paper feeding gap for the paper to pass through is formed between the two paper feed rollers 7, between the two creasing rollers and between the two paper discharge rollers 8; the rotation speed of the paper feed rollers 7 and the paper discharge rollers 8 is the same as the passing speed of the paper.

[0036] For ease of description, the two creasing rollers are named as the first creasing roller 9 and the second creasing roller 10 respectively. The second creasing roller 10 is located above the first creasing roller 9 . The first creasing roller 9 is provided with a creasing punch 12 , and the second creasing roller 10 is provided with a creasing die 11 .

[0037] When the first creasing roller 9 and the second creasing roller 10 rotate to the set position, the creasing die 11 can be molded with the creasing punch 12; when the first creasing roller 9 and the second creasing roller 10 continue to rotate, the creasing die 11 and the creasing punch 12 are separated; by the continuous rotation of the first creasing roller 9 and the second creasing roller 10, the creasing die 11 and the creasing punch 12 can be periodically molded or separated from each other, so that the paper can still be embossed while the paper is continuously conveyed, without pausing the paper conveying during the creasing, thereby effectively improving the production efficiency.

[0038] The embossing die 11 includes a die sleeve, which is sleeved on the first embossing roller 9, and a long strip groove is arranged on the outer circumference of the die sleeve, and the long strip groove is parallel to the axis of the first embossing roller 9; the embossing punch 12 includes a punch sleeve, which is sleeved on the second embossing roller 10, and a long strip protrusion is arranged on the outer circumference of the die sleeve, and the long strip protrusion is parallel to the axis of the second embossing roller 10; the long strip protrusion cooperates with the long strip groove to complete the mold closing.

[0039] The folding mechanism includes a support plate 13, and a folding roller assembly and two folding grooves arranged on the support plate 13. One end of the two folding grooves forms an opening. The two folding grooves are respectively located above and below the folding roller assembly, and the openings of the two folding grooves face the folding roller assembly. According to actual conditions, the number of folding grooves can also be increased accordingly.

[0040] For the convenience of description, the two folding grooves in this embodiment are respectively named the first folding groove 14 and the second folding groove 15; the first folding groove 14 is arranged obliquely downward toward the creasing mechanism, and the second folding groove 15 is arranged obliquely upward toward the creasing mechanism; a movable first limiting plate 16 is arranged on the first folding groove 14, and the moving direction of the first limiting plate 16 is parallel to the moving direction of the paper in the first folding groove 14; a movable second limiting plate 17 is arranged on the second folding groove 15, and the moving direction of the second limiting plate 17 is parallel to the moving direction of the paper in the second folding groove 15.

[0041] A first ball screw 18 is provided in the first folding groove 14, and the first ball screw 18 is connected to the first limit plate 16 and drives the first limit plate 16 to move in the first folding groove 14; a second ball screw 19 is provided in the second folding groove 15, and the second ball screw 19 is connected to the second limit plate 17 and drives the second limit plate 17 to move in the second folding groove 15.

[0042] A first baffle 20 is also provided on the first folding groove 14, and one end of the first baffle 20 is an extended end and extends from the opening of the first folding groove 14 close to the folding roller assembly; a second baffle 21 is also provided on the second folding groove 15, and one end of the second baffle 21 is an extended end and extends from the opening of the second folding groove 15 close to the folding roller assembly; the first baffle 20 is located below the second baffle 21, and the extended ends of the first baffle 20 and the second baffle 21 are both bent to form a guide portion, which is used to guide the paper into the folding groove.

[0043] The folding roller assembly includes a first folding roller 22, a second folding roller 23 and a third folding roller 24 which are arranged in sequence along the paper conveying direction. The first folding roller 22, the second folding roller 23 and the third folding roller 24 can be rotatably set on the support plate 13; the first folding roller 22 and the second folding roller 23 are arranged horizontally at the same height, and the third folding roller 24 is located below the second folding roller 23; a pair of paper guides 25 are also arranged between the folding roller assembly and the creasing mechanism, the pair of paper guides 25 are fixedly arranged on the support plate 13, and a guide channel for guiding the horizontal movement of paper is formed between the pair of paper guides 25; a paper guide roller 26 is arranged above the first folding roller 22, and the paper guide roller 26 is rotatably set on the support plate 13.

[0044] During folding, the paper after indentation is guided by the paper guide 25 and transported horizontally between the first folding roller 22 and the paper guide roller 26, and the front end of the paper is introduced into the first folding groove 14 through the guide part of the first baffle 20; when the front end of the paper touches the first limit plate 16, the paper cannot continue to move forward in the direction of the first folding groove 14, and the rear end of the paper rolls downward under the action of its own gravity, and is folded for the first time between the first folding roller 22 and the second folding roller 23; the rear end of the paper after one folding is introduced into the second folding groove 15 through the guide part of the second baffle 21, and is blocked by the second limit plate 17. At this time, the paper cannot move forward in the direction of the second folding groove 15, and is folded for the second time under the action of the second folding roller 23 and the third folding roller 24, and finally the paper is transported to the paper receiving mechanism to complete the folding.

[0045] The paper receiving mechanism includes a paper receiving tray 27, a paper output board 28 and a paper pressing wheel 29 which are arranged in sequence from bottom to top; the paper receiving tray 27 and the paper output board 28 are fixedly mounted on the support plate 13, and the paper pressing wheel 29 is rotatably mounted on the support plate 13 through a bracket; one end of the paper output board 28 is located at the paper output end between the second folding roller 23 and the third folding roller 24, and the other end of the paper output board 28 is inclined downward toward the paper receiving tray 27; a conveyor belt 30 is arranged on the paper output board 28, and the conveyor belt 30 is used to convey the folded paper from top to bottom along the board surface of the paper output board 28 to the paper receiving tray 27; the paper pressing wheel 29 is located on the paper feeding path of the conveyor belt 30, so as to crush the folded paper and effectively ensure that the folded paper is flat.

[0046] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. A creasing and folding machine, comprising a creasing mechanism and a folding mechanism arranged in sequence along a paper conveying path; characterized in that: The creasing mechanism comprises two paper feed rollers, two creasing rollers and two paper discharge rollers which are rotatably arranged in sequence along the paper conveying path; a paper feeding gap for paper to pass through is formed between the two paper feed rollers, between the two creasing rollers and between the two paper discharge rollers; the two creasing rollers are respectively provided with a creasing concave mold and a creasing convex mold which can form a creasing on the paper after cooperating with each other; The folding mechanism comprises a folding roller assembly connected to the paper outlet end of the creasing mechanism, a folding groove is arranged at the paper outlet end of the folding roller assembly, and the folding groove has an opening facing the folding roller assembly for the creasing paper to enter the folding groove.

2. The creasing and folding machine according to claim 1, characterized in that: The creasing die comprises a die sleeve sleeved on one of the creasing rollers, the die sleeve is provided with an elongated groove on the outer circumference, and the elongated groove is parallel to the axis of the creasing roller; the creasing punch comprises a die sleeve sleeved on the other creasing roller, the die sleeve is provided with an elongated protrusion on the outer circumference, and the elongated protrusion is parallel to the axis of the creasing roller; when the two creasing rollers rotate, the elongated protrusion and the elongated groove can cooperate with or separate from each other.

3. The creasing and folding machine according to claim 1, characterized in that: There are at least two folding grooves, one of which is arranged obliquely downward toward the creasing mechanism, and the other adjacent folding groove is arranged obliquely upward toward the creasing mechanism; each folding groove is provided with a movable limiting plate, and the moving direction of the limiting plate is parallel to the moving direction of the paper in the folding groove.

4. The creasing and folding machine according to claim 2, characterized in that: A ball screw is arranged in each folding groove, and the ball screw is connected to the limit plate and drives the limit plate to move in the folding groove.

5. The creasing and folding machine according to claim 2, characterized in that: Each folding slot is also provided with a baffle, the protruding end of the baffle protrudes from the opening of the folding slot close to the folding roller assembly, and the protruding end of the baffle is bent to form a guide portion for guiding the paper to enter the folding slot.

6. The creasing and folding machine according to claim 2, characterized in that: The folding roller assembly includes a first folding roller, a second folding roller and a third folding roller which are rotatably arranged in sequence along the paper conveying direction. The first folding roller and the second folding roller are arranged horizontally at the same height, and the third folding roller is located below the second folding roller.

7. The creasing and folding machine according to claim 6, characterized in that: A pair of paper guides are arranged between the folding roller assembly and the creasing mechanism, and a guide channel for guiding the horizontal movement of paper is formed between the pair of paper guides; a rotatable paper guide roller is arranged above the first folding roller.

8. The creasing and folding machine according to any one of claims 1 to 6, characterized in that: The creasing and folding machine also includes a paper supply mechanism arranged at the paper feeding end of the creasing mechanism, the paper supply mechanism includes a support frame with a paper trough formed inside, the paper trough has a conveying port connected to the creasing mechanism, and a paper discharge port for filling paper into the paper trough; a lift platform that can be raised and lowered is provided in the paper trough, and a paper suction device located above the lift platform that can absorb and convey paper.

9. The creasing and folding machine according to claim 8, characterized in that: The paper trough is provided with a paper blowing device at the conveying port, and the paper blowing device includes a fan fixing plate, a fan arranged on the fan fixing plate, and an air guide groove connected to the air outlet end of the fan; an air guide cavity is formed inside the air guide groove, and a plurality of air outlets connected to the air guide cavity are arranged on the side of the air guide groove facing the paper.

10. The creasing and folding machine according to claims 1-6, characterized in that: The creasing folder also includes a paper receiving mechanism arranged at the paper output end of the folding mechanism, and the paper receiving mechanism includes a paper receiving tray, a paper output board and a paper pressing wheel arranged in sequence from bottom to top; a conveyor belt for conveying folded paper along the paper output board surface to the paper receiving tray is arranged on the paper output board, and the paper pressing wheel is located on the paper feeding path of the conveyor belt.

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