Automatic folder facial tissue beveling machine
By designing an automatic corner folding machine for folder production, the multi-step operation of corner folding and polytetrafluoroethylene fabrics are used to solve the problems of unstable corner folding and glue connection of existing equipment, and efficient and stable face paper corner folding is achieved, reducing production costs.
Patent Information
- Application Number
- CN202510372090.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-05-09
AI Technical Summary
The quality of the existing folder surface paper corner equipment is unstable, and it is easy to cause glue to be connected during the folding process, resulting in high scrap rate, low efficiency and high cost.
An automatic folding machine for folding paper on the folder is designed to convey cardboard through a conveyor belt, and the corners of the folding corners are folded using multiple steps of top, translation and downward pressure. Combining the low friction and non-stickness of polytetrafluoroethylene fabrics, it prevents glue from being connected.
The stable folding angle of the corner of the face paper is achieved, the folding angle quality is improved, the production cost is reduced, the market competitiveness is improved, and the problem of glue connection is solved.
Smart Images
Figure CN119953024A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of folder production, and in particular to an automatic corner folding machine for folder face paper. Background Art
[0002] The main part of the folder cover is usually made of cardboard, and in order to protect the outer side of the cardboard, the outer side and the surrounding areas are usually covered with paper. Figure 5 As shown in the upper half of the picture, the cardboard and facial paper are generally rectangular in shape (the bonding parts of the facial paper and cardboard are already glued at this time), and the facial paper exceeds the edge of the cardboard. The excess part of the facial paper is glued to the cardboard through processes such as folding and flanging. In the production process of folders, the gluing and bonding of facial paper and cardboard is generally completed by automatic equipment, but the folding part is difficult, the quality of the existing folding equipment is uneven after folding, or the folding and pressing equipment will glue the cardboard and facial paper during the folding and pressing process, resulting in a high scrap rate. Most of the time, manual folding is still the main method, and manual folding is relatively inefficient, resulting in higher production costs and lower product competitiveness. Therefore, a folding machine with stable folding quality is urgently needed. Summary of the invention
[0003] The purpose of the present invention is to provide an automatic corner folding machine for the face paper of a folder, which can automatically realize the feeding and positioning of cardboard, and fold the corners of the facing paper through multiple steps of pushing up, translating, and pressing down the corner folding part, which can effectively improve the corner folding quality. At the same time, the conveyor belt of the corner folding machine can be connected with other gluing equipment and flanging equipment, and multiple production steps of the folder can form a production line, thereby effectively improving production efficiency, reducing the cost of folder products, and improving market competitiveness.
[0004] The above technical objectives of the present invention are achieved through the following technical solutions: An automatic corner folding machine for folder paper includes a frame, a conveyor belt for conveying paperboard and a paperboard positioning device are arranged on the frame; two symmetrically arranged corner folding devices are arranged on both sides of the conveyor belt; The folding device comprises a cardboard corner support block, the outer side of the cardboard corner support block is formed with a chamfered surface, the chamfered surface is opposite to the folding portion, the folding portion can be raised and lowered and can be translated along the vertical direction of the chamfered surface, and the first telescopic cylinder and the second telescopic cylinder are both controlled by a controller.
[0005] Through the above technical solution, the cardboard with facial paper pasted on it is conveyed to the four corner folding devices through the conveyor belt and positioned, and the four corners of the cardboard are aligned with the chamfered surfaces one by one. At this time, the facial paper is beyond the chamfered surface, and then the corner folding part moves up to turn the corner of the facial paper up 90 degrees, and then the corner folding part moves toward the vertical direction of the chamfered surface to fold the facial paper part turned up 90 degrees again 90 degrees to make it fit on the cardboard, and then the corner folding part moves down again to compact the facial paper and make it fastened to the cardboard, thereby completing the corner folding and wrapping work of the facial paper.
[0006] The present invention is further configured as follows: the angled portion is connected to a first telescopic cylinder for driving it to rise and fall, the first telescopic cylinder is fixed on a right-angle seat, the right-angle seat is fixed to the end of a telescopic rod of a horizontally arranged second telescopic cylinder, and the second telescopic cylinder is fixed on a base.
[0007] Through the above technical solution, the first telescopic cylinder controls the lifting and lowering of the angled portion, and the second telescopic cylinder controls the translation of the angled portion by controlling the translation of the right-angle seat.
[0008] The present invention is further configured as follows: the folding portion includes a folding plate and a positioning guide block, and one end of the folding plate facing the chamfered surface is arranged parallel to the chamfered surface; a rectangular guide groove is provided on the base, and the positioning guide block is inserted into the rectangular guide groove.
[0009] Through the above technical solution, the cooperation of the rectangular guide groove and the positioning guide block can guide the corner part to prevent the corner part from flipping over; the inward movement of the corner part can be limited by the positioning guide block hitting the chamfered surface when moving inward, preventing the inward movement from excessively causing deformation of the paperboard.
[0010] The present invention is further configured as follows: an anti-sticking fabric is provided on the outer side of the folding plate, and the lower end of the anti-sticking fabric is fixed on the positioning guide block.
[0011] Since there is glue on the edge of the tissue paper, when the folding plate presses down and hits the glue and moves back to its position, it may drag the cardboard or tissue paper. By setting up anti-sticking fabric, this phenomenon can be effectively prevented from happening, so that the folding work can be carried out smoothly.
[0012] The present invention is further configured as follows: the anti-sticking fabric is a polytetrafluoroethylene fabric.
[0013] The base material of the polytetrafluoroethylene fabric is a woven cloth made of glass fibers, which is soaked in polytetrafluoroethylene after weaving. The polytetrafluoroethylene is non-sticky, wear-resistant, has low friction resistance and is corrosion-resistant.
[0014] The present invention is further configured as follows: the folded corner portion and the telescopic rod of the first telescopic cylinder are fixedly connected via a rubber block, and the rubber block can provide a certain buffering effect when the folded corner portion is pressed against the tissue paper.
[0015] The present invention is further configured as follows: the cardboard positioning device includes a front end positioning block arranged above the conveyor belt and two side positioning blocks respectively arranged on both sides of the conveyor belt, the front end positioning block is connected to a third telescopic cylinder driving it to rise and fall, the side positioning block is fixed on the flip shaft, the middle part of the flip shaft is fixed to one end of the flip arm, the other end of the flip arm is fixed with a driving rod, the driving rod is inserted into the long hole of the lifting block, and the lifting block is connected to a fourth telescopic cylinder driving it to rise and fall.
[0016] Through the above technical scheme, the front end positioning block moves downward to block the front end position of the cardboard transported by the conveyor belt, and the lifting block is driven upward by the fourth telescopic cylinder, and the lifting block drives the driving rod to move upward. The driving rod drives the flip axis through the flip arm, and the flip axis drives the side positioning block to move upward so that the side positioning block is in a vertical state. The position of the cardboard is positioned by the two side positioning blocks. Since the surface paper is thin and soft, its existence can be ignored during the positioning process.
[0017] The present invention is further configured as follows: a rubber pressing block is provided above the paperboard corner support block, and the rubber pressing block is connected to a fifth telescopic cylinder for driving the rubber pressing block to rise and fall; A proximity sensor is arranged on the rear side of the front end positioning block, and the proximity sensor faces the conveyor belt.
[0018] Through the above technical solution, the proximity sensor can detect whether there is cardboard entering the corner area, which is convenient for controlling when the front positioning block and the side positioning block work.
[0019] The present invention is further configured as follows: a plurality of air holes are provided on the conveyor belt, and the upper half of the conveyor belt abuts against the vacuum channel located at the lower side thereof.
[0020] Through the vacuum channels and air holes, the cardboard on the conveyor belt can be adsorbed by the conveyor belt during the conveying process, thereby reducing the occurrence of slippage and ensuring effective transportation.
[0021] The outstanding effects of the present invention are: Compared with the existing technology, it can automatically realize the feeding and positioning of cardboard, and fold the corner of the opposite paper through multiple steps of pushing up, translating and pressing down the corner part, which can effectively improve the quality of folding. At the same time, the conveyor belt of the folding machine can be connected with other gluing equipment and flanging equipment. Multiple production steps of folders can form a production line, which can effectively improve production efficiency, reduce the cost of folder products, and improve market competitiveness. By arranging a polytetrafluoroethylene fabric with one end free on the folded corner, the low friction and non-stickiness of polytetrafluoroethylene can further improve the flexibility of the deformation of the face paper, reduce damage to the face paper, and solve the problem of glue bonding the folded corner, face paper and cardboard. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A top view of the present invention; Figure 3 for Figure 2 About the cross-sectional view of AA; Figure 4 This is a schematic diagram of the state of the tissue paper during the folding process; Figure 5 Schematic diagram of the assembly of cardboard and tissue paper before and after folding the corners.
[0023] Reference numerals: 2, conveyor belt; 21, air hole; 22, vacuum channel; 3. Angle folding device; 31. Cardboard corner support block; 33. Angle folding part; 34. First telescopic cylinder; 35. Right angle seat; 36. Second telescopic cylinder; 37. Base; 38. Rubber block; 311, chamfered surface; 331, folding plate; 332, positioning guide block; 4. Cardboard positioning device; 41. Front end positioning block; 42. Side positioning block; 43. Third telescopic cylinder; 44. Turning shaft; 45. Turning arm; 46. Driving rod; 47. Lifting block; 48. Fourth telescopic cylinder; 49. Support; 50. Rubber pressing block; 51. Fifth telescopic cylinder; 90. Cardboard; 91. Tissue paper. DETAILED DESCRIPTION
[0024] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0025] The following references Figures 1 to 5 The embodiments of the present invention are described as follows: An automatic corner folding machine for paper of a file folder includes a frame, a conveyor belt 2 for conveying paperboard 90 and a paperboard positioning device 4 are arranged on the frame; two symmetrically arranged corner folding devices 3 are arranged on both sides of the conveyor belt 2, and four corner folding devices 3 are arranged at four corners of a rectangle respectively; the corner folding device 3 includes a paperboard corner support block 31, the upper surface of the conveyor belt 2 is slightly higher than the height of the paperboard corner support block 31, and the paperboard corner support block is fixed on the frame; the outer side of the paperboard corner support block 31 is formed with a chamfered surface 311, the chamfered surface 311 is directly opposite to the corner folding portion 33, and the corner folding portion 33 can be raised and lowered and can be translated in the vertical direction of the chamfered surface 311. The four corners of the paperboard involved in this application are pre-formed with chamfers, and the paperboard has been pre-bonded with paper 91 before the corner folding, the paper 91 is located below the paperboard 90, the four sides of the paper are beyond the paperboard setting, and the excess part of the paper is coated with glue before the corner folding.
[0026] The folding part 33 is connected to a first telescopic cylinder 34 that drives it to rise and fall. The first telescopic cylinder 34 is fixed on a right-angle seat 35. The right-angle seat 35 is fixed to the end of the telescopic rod of a second telescopic cylinder 36 that is horizontally arranged. The second telescopic cylinder 36 is fixed on a base 37. The base 37 is fixed on a frame. The first telescopic cylinder and the second telescopic cylinder are both controlled by a controller. Preferably, the folding part 33 includes a folding plate 331 and a positioning guide block 332. The end of the folding plate 331 facing the chamfered surface 311 is arranged parallel to the chamfered surface 311. The base 37 is provided with a rectangular guide groove 371, and the positioning guide block 332 is inserted into the rectangular guide groove 371. The outer side of the folding plate 331 is provided with an anti-sticking fabric 32, and the lower end of the anti-sticking fabric 32 is fixed on the positioning guide block 332. The anti-sticking fabric 32 is a polytetrafluoroethylene fabric, and the base material of the polytetrafluoroethylene fabric is a woven fabric woven from glass fibers, and the woven fabric is impregnated with polytetrafluoroethylene after completion. Preferably, the angled portion 33 and the telescopic rod of the first telescopic cylinder 34 are fixedly connected via a rubber block 38 .
[0027] The cardboard positioning device 4 includes a front end positioning block 41 arranged above the conveyor belt 2 and two side positioning blocks 42 respectively arranged on both sides of the conveyor belt 2, the front end positioning block 41 is connected to a third telescopic cylinder 43 for driving it to rise and fall, the side positioning block 42 is fixed on a flip shaft 44, the middle part of the flip shaft 44 is fixed to one end of a flip arm 45, the other end of the flip arm 45 is fixed with a driving rod 46, the driving rod 46 is inserted into a long hole 471 of a lifting block 47, and the lifting block 47 is connected to a fourth telescopic cylinder 48 for driving it to rise and fall; the end of the flip shaft 44 is rotatably connected to a support 49, the support 49, the third telescopic cylinder 43 and the fourth telescopic cylinder 48 are fixed on a frame, and a controller controls the third telescopic cylinder and the fourth telescopic cylinder.
[0028] A rubber pressing block 50 is disposed above the paperboard corner supporting block 31 , and the rubber pressing block 50 is connected to a fifth telescopic cylinder 51 for driving the rubber pressing block 50 to rise and fall. The fifth telescopic cylinder 51 is fixed to the frame and is controlled by a controller.
[0029] A proximity sensor 52 is disposed at the rear side of the front positioning block 41 . The proximity sensor 52 faces the conveyor belt 2 . The proximity sensor 52 is fixed on the frame and is electrically connected to the controller.
[0030] The conveyor belt 2 is provided with a plurality of air holes 21 . The upper half of the conveyor belt 2 abuts against a vacuum channel 22 located at the lower side thereof. The vacuum channel 22 is connected with a vacuum tube.
[0031] Working principle and steps: First, the paperboard 90 and the facial paper 91 that have been glued together are conveyed from right to left through the conveyor belt 2, and the corners of the facial paper have been coated with glue; Second, when the cardboard is conveyed to the bottom of the proximity sensor 52, the proximity sensor transmits a signal to the controller, and the controller controls the third telescopic cylinder 43 to drive the front positioning block 41 to move downward, and the cardboard moves to the left until it is blocked by the front positioning block; then the controller controls the fourth telescopic cylinder 48 to drive the lifting block 47 to move upward, and the lifting block pushes the driving rod upward, thereby driving the flip shaft to rotate a certain angle through the flip arm, and the flip shaft drives the side positioning block to rotate, and the side positioning block pushes the cardboard inward, and finally the cardboard is clamped between the side positioning blocks on both sides; then the fifth telescopic cylinder drives the rubber pressure block to move downward, and the rubber pressure block presses against the cardboard to complete the positioning of the cardboard; at this time, the chamfer of the corner of the cardboard 90 is just flush with the chamfered surface; Third, the first telescopic cylinder drives the folding portion 33 to move upward, and the folding plate of the folding portion moves to the top of the cardboard 90 along the chamfered surface 311. At this time, the angle of the facial paper 91 is folded upward by 90 degrees, and then the second telescopic cylinder drives the right-angle seat to move toward the chamfered surface. The right-angle seat drives the folding plate to move through the first telescopic cylinder, so that the angle of the facial paper folded by 90 degrees is bent again by 90 degrees to make the corner of the facial paper fit on the cardboard, and then the first telescopic cylinder drives the folding portion downward again to completely stick the facial paper to the cardboard. The working state of this step is as follows: Figure 4 Then, by setting the anti-sticking fabric, the friction resistance of the folding plate when bending the face paper can be reduced, and the damage to the face paper can be reduced. The anti-sticking fabric can also be used to prevent the folding plate from sticking to the paperboard. Fourth, after the folding is completed, the folding part moves up, the front positioning block moves up, the side positioning block rotates and resets, and the conveyor belt continues to transport the folded cardboard and face paper to the left.
[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the scope of protection of the present invention.
Claims
1. An automatic corner folding machine for folder paper, comprising a frame, on which a conveyor belt (2) for conveying paperboard (90) and a paperboard positioning device (4) are provided; the characteristics are: Two symmetrically arranged corner folding devices (3) are respectively provided on both sides of the conveyor belt (2); The corner folding device (3) comprises a paperboard corner support block (31), the outer side of the paperboard corner support block (31) is formed with a chamfered surface (311), the chamfered surface (311) is directly opposite to the corner folding portion (33), and the corner folding portion (33) can be raised and lowered and can be translated along the vertical direction of the chamfered surface (311).
2. The automatic corner folding machine for folder paper according to claim 1, characterized in that: The angled portion (33) is connected to a first telescopic cylinder (34) for driving the first telescopic cylinder (34) to move upward and downward; the first telescopic cylinder (34) is fixed on a right-angle seat (35); the right-angle seat (35) is fixed on the end of a telescopic rod of a horizontally arranged second telescopic cylinder (36); and the second telescopic cylinder (36) is fixed on a base (37).
3. The automatic corner folding machine for folder paper according to claim 2, characterized in that: The folded corner portion (33) comprises a folding plate (331) and a positioning guide block (332); one end of the folding plate (331) facing the chamfered surface (311) is arranged parallel to the chamfered surface (311); a rectangular guide groove (371) is provided on the base (37), and the positioning guide block (332) is inserted into the rectangular guide groove (371).
4. The automatic corner folding machine for folder paper according to claim 3, characterized in that: An anti-sticking fabric (32) is provided on the outer side of the folding plate (331), and the lower end of the anti-sticking fabric (32) is fixed on the positioning guide block (332).
5. The automatic corner folding machine for folder paper according to claim 4, characterized in that: The anti-sticking fabric (32) is a polytetrafluoroethylene fabric.
6. The automatic corner folding machine for folder paper according to claim 2, characterized in that: The base material of the polytetrafluoroethylene fabric is a woven cloth woven from glass fibers, and the woven cloth is impregnated with polytetrafluoroethylene after being woven.
7. The automatic corner folding machine for folder paper according to claim 2, characterized in that: The angled portion (33) and the telescopic rod of the first telescopic cylinder (34) are fixedly connected via a rubber block (38).
8. The automatic corner folding machine for folder paper according to claim 1, characterized in that: The cardboard positioning device (4) comprises a front end positioning block (41) arranged above the conveyor belt (2) and two side positioning blocks (42) respectively arranged on both sides of the conveyor belt (2); the front end positioning block (41) is connected to a third telescopic cylinder (43) for driving the front end positioning block (41) to rise and fall; the side positioning blocks (42) are fixed on a turning shaft (44); the middle part of the turning shaft (44) is fixed to one end of a turning arm (45); a driving rod (46) is fixed to the other end of the turning arm (45); the driving rod (46) is inserted into a long hole (471) of a lifting block (47); and the lifting block (47) is connected to a fourth telescopic cylinder (48) for driving the lifting block (47).
9. The automatic corner folding machine for folder paper according to claim 8, characterized in that: A rubber pressing block (50) is provided above the paperboard corner supporting block (31), and the rubber pressing block (50) is connected to a fifth telescopic cylinder (51) for driving the rubber pressing block to rise and fall. A proximity sensor (52) is provided on the rear side of the front positioning block (41), and the proximity sensor (52) faces the conveyor belt (2).
10. The automatic corner folding machine for folder paper according to claim 1, characterized in that: The conveyor belt (2) is provided with a plurality of air holes (21), and the upper half of the conveyor belt (2) abuts against a vacuum channel (22) located at the lower side thereof.