A paper product ridge-forming mechanism

Abstract

The utility model discloses a paper product ridging mechanism, including the upper ridging roller and lower ridging roller of paired setting, two roll axes are parallel and surface close contact, the circumferential surface of upper ridging roller and lower ridging roller all is equipped with the knife groove of horizontal extension, and the knife groove is according to paper product specification equidistance distribution, and the height of detachable installation in the knife groove of knife strip is matched with the depth of knife groove, and the thickness is 50% of the width of knife groove, and the dotted line knife is selectively installed in the knife groove of upper ridging roller or lower ridging roller through fixed screw, and the knife strip is combined with the dotted line knife and is realized combination formula fixed through same group fixed screw, and forms modularization cutter group structure. The utility model processing flexibility promotes: through the integer multiple relation of knife groove spacing and screw counterbore, supports the same cutter group to adapt multiple specifications paper product, precision control: maintenance convenience: modularization cutter group can complete replacement within 10 minutes, and the efficiency is improved by more than 80% compared with traditional equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper product processing equipment technical field especially relates to a paper product ridge forming mechanism. BACKGROUND

[0002] In the paper product production process, the ridge forming process refers to the key procedure that the regular fold line, easy tear line or indentation is processed on paper or paper product through mechanical means to meet the subsequent folding, slitting, use and the like. The process is widely applied in the fields of labels, forms, packaging paper and the like, and directly influences the use convenience, appearance quality and production efficiency of products. But the traditional ridge forming mechanism has the following technical problems:

[0003] 1. Single knife groove fixation: the knife groove and the cutter adopt welding or integral processing mode, cannot be flexibly adjusted according to product specifications, and the cutter needs to be disassembled and replaced, which is time-consuming and labor-consuming;

[0004] 2. Poor cutter stability: the cutter is prone to loosening after installation and needs to be frequently calibrated;

[0005] In view of the above problems, the utility model provides a modular ridge forming mechanism. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a paper product ridge forming mechanism to solve the foregoing problems in the prior art.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A paper product ridge forming mechanism comprises:

[0009] A pair of upper ridge forming rollers and lower ridge forming rollers are arranged, the two roller axes are parallel and the surfaces are closely fitted;

[0010] The circumferential surfaces of the upper ridge forming rollers and the lower ridge forming rollers are each provided with horizontally extending knife grooves, and the knife grooves are equally spaced according to paper product specifications;

[0011] A cutter abutting strip is detachably installed in the knife groove, the height of the cutter abutting strip matches the depth of the knife groove, and the thickness of the cutter abutting strip is 50% of the width of the knife groove;

[0012] A dot line cutter is selectively installed in the knife groove of the upper ridge forming roller or the lower ridge forming roller through a fixing screw;

[0013] The cutter abutting strip and the dot line cutter are combined and fixed through the same set of fixing screws to form a modular cutter group structure.

[0014] In some specific embodiments, the transmission end of the upper ridge forming roller and the lower ridge forming roller is provided with a set of meshing gears, the two gears have the same modulus and the tooth number ratio is 1:1, and the roller bodies are synchronously and reversely rotated.

[0015] In some embodiments, the blade of the point-line knife protrudes 0.3-0.5mm from the surface of the ridging roller, and forms a cutting and / or indentation cooperation gap with the counter-knife strip of the opposite ridging roller.

[0016] In some embodiments, the surface of the counter-knife strip is provided with equidistantly distributed screw counterbores, and the pitch of the screw counterbores is an integer multiple of the pitch of the knife grooves.

[0017] In some embodiments, the inner wall of the knife groove is provided with anti-skid lines, and the counter-knife strip and the point-line knife are correspondingly provided with meshing tooth-shaped structures.

[0018] The paper product ridging mechanism has the advantages that: the paper product ridging mechanism is provided with the upper ridging roller and the lower ridging roller which are arranged in pairs, the two roller axes are parallel and the surfaces are closely attached to each other, the circumferential surfaces of the upper ridging roller and the lower ridging roller are each provided with horizontally extending knife grooves, the knife grooves are equidistantly distributed according to the specifications of paper products, the counter-knife strip can be detachably installed in the knife groove and has a height matched with the depth of the knife groove and a thickness of 50% of the width of the knife groove, the point-line knife is selectively installed in the knife groove of the upper ridging roller or the lower ridging roller through the fixing screw, the counter-knife strip and the point-line knife are combined and fixed through the same set of fixing screws, and a modular knife group structure is formed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the upper ridging roller and the lower ridging roller of the paper product ridging mechanism;

[0020] Figure 2 is a structural schematic view of the counter-knife strip and the point-line knife of the paper product ridging mechanism;

[0021] Figure 3 is a structural schematic view of the installation structure of the paper product ridging mechanism.

[0022] In the drawings, 1 is the upper ridging roller, 2 is the lower ridging roller, 3 is the knife groove, 4 is the counter-knife strip, 5 is the point-line knife, 6 is the fixing screw, and 7 is the screw counterbore. DETAILED DESCRIPTION

[0023] In order to make the purpose, the technical scheme and the advantages of the paper product ridging mechanism clearer and more apparent, the paper product ridging mechanism will be further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the paper product ridging mechanism, and are not used to limit the paper product ridging mechanism.

[0024] Reference Figure 1 , Figure 2 and Figure 3The paper product ridge forming mechanism shown comprises a pair of upper ridge forming rollers 1 and lower ridge forming rollers 2, the axes of which are parallel and the surfaces of which are closely fitted;

[0025] The circumferential surfaces of the upper ridge forming rollers 1 and the lower ridge forming rollers 2 are each provided with horizontally extending knife grooves 3, which are distributed at equal intervals according to the specifications of the paper products;

[0026] The knife-resisting strips 4 are detachably installed in the knife grooves 3, the height of which matches the depth of the knife grooves 3, and the thickness of which is 50% of the width of the knife grooves 3;

[0027] The dotted line knives 5 are selectively installed in the knife grooves 3 of the upper ridge forming rollers 1 or the lower ridge forming rollers 2 through the fixing screws 6;

[0028] The knife-resisting strips 4 and the dotted line knives 5 are combined and fixed through the same set of fixing screws 6, forming a modular knife group structure.

[0029] In this embodiment, the upper / lower ridge forming rollers 2 are a pair of metal rollers arranged in parallel and closely fitted, and are synchronously and reversely rotated through mechanical engagement.

[0030] The knife grooves 3 are horizontally arranged on the circumferential surfaces of the two rollers at equal intervals, and the interval is set according to the size specifications of the paper products (such as the height of the carton and the position of the indentation).

[0031] Modular knife group design

[0032] The knife-resisting strips 4 are size-matched: the height matches the depth of the knife grooves 3, and the thickness is 50% of the width of the groove, ensuring that the knife-resisting strips are flush with the roller surface after installation;

[0033] The installation method is to fix through surface screw counterbores 7, and the counterbores are arranged at an integer multiple of the interval of the knife grooves 3, supporting multi-specification adaptation.

[0034] The dotted line knives 5 can be installed in two directions: they are selectively installed in the knife grooves 3 of the upper rollers or the lower rollers through the fixing screws 6, and the cutting edge protrudes 0.3-0.5mm from the roller surface;

[0035] The combination mode: the same set of fixing screws 6 is shared with the knife-resisting strips 4, forming a cutting and indentation composite knife group.

[0036] Functional cooperation

[0037] Cutting / indentation gap: the cutting edge of the dotted line knife 5 and the knife-resisting strip 4 of the opposite roller form a gap of 0.2-0.4mm, which is adjusted according to the thickness of the paper product (such as 0.2mm for cardboard indentation and 0.4mm for corrugated paper cutting).

[0038] Anti-skid positioning: the inner wall of the knife groove 3 is provided with anti-skid lines, and the bottom of the tool corresponds to the tooth-shaped structure, preventing axial displacement during processing.

[0039] Technical advantages

[0040] Quick tool change: Modular tool set can be replaced within 10 minutes, supporting indentation and cutting mode switching freely;

[0041] High-precision processing: Servo drive system provides ±0.01mm axial positioning accuracy, ensuring 3 synchronous alignment of multiple tool slots;

[0042] Compatibility expansion: By adjusting the distance between tool slots 3 and the position of screw holes 7, it can adapt to different sizes of paper products (such as A4 paper box, express box).

[0043] It is further necessary to point out that the thickness of the tool stop bar 4 is designed to be 50% of the width of the tool slot 3, which can form a symmetrical gap on both sides (25% each) during installation, ensuring the close fit of the tool and the slot wall, and avoiding assembly difficulties caused by size interference. The symmetrical gap design can also disperse the lateral stress of the tool during work, improving the anti-vibration performance.

[0044] The ratio allows flexible installation of the combination of the tool stop bar 4 and the point-line tool 5 in the same tool slot 3. For example, when both indentation and cutting functions are needed, the tool stop bar 4 and the point-line tool 5 share the fixed screw 6 (the thickness after superposition occupies the full width of the tool slot 3), ensuring the axial positioning accuracy and cooperation of the two.

[0045] Combined with the anti-slip pattern on the inner wall of the tool slot 3, the tooth-shaped structure at the bottom of the tool stop bar 4 needs to form a meshing contact surface with the slot wall, and 50% thickness can provide enough contact area to resist axial movement during processing.

[0046] Standardized production and maintenance cost

[0047] The ratio simplifies the tool manufacturing process (such as unified tool thickness specifications), reduces the complexity of matching multiple specifications of tool slots 3. At the same time, the symmetrical design allows the tool stop bar 4 to be installed in both directions, extending the service life and reducing spare parts inventory.

[0048] In some embodiments, the drive end of the upper and lower ridging rollers 1 and 2 is provided with a meshing gear set, the two gears have the same modulus and a tooth ratio of 1:1, realizing synchronous reverse rotation of the roller bodies.

[0049] In some embodiments, the cutting edge of the point-line tool 5 protrudes 0.3-0.5mm from the corresponding ridging roller surface, and forms a cutting and / or indentation cooperation gap with the tool stop bar 4 of the opposite ridging roller.

[0050] In some embodiments, the surface of the tool stop bar 4 is provided with equidistantly distributed screw holes 7, and the distance between the screw holes is an integer multiple of the distance between the tool slots 3.

[0051] In some embodiments, the inner wall of the tool slot 3 is provided with an anti-slip pattern, and the bottom of the tool stop bar 4 and the point-line tool 5 is provided with a meshing tooth-shaped structure.

[0052] The working method of the utility model

[0053] 1. Operation preparation stage

[0054] Step 1.1: tool configuration selection

[0055] According to paper product processing requirements (such as indentation, cutting or composite processing), the following combination modes are selected:

[0056] Pure indentation mode: only install the counter blade 4 in the upper roller or lower roller knife groove 3;

[0057] Cutting mode: install the point line knife 5 in the knife groove 3 of one side roller, and install the counter blade 4 on the opposite side roller;

[0058] Composite mode: install the counter blade 4 and the point line knife 5 in the same knife groove 3, and fix them through the same set of fixed screws 6.

[0059] Step 1.2: parameter setting

[0060] Gap adjustment: set the matching gap (0.2-0.4mm) of the point line knife 5 and the counter blade 4 according to the thickness of the paper product;

[0061] Thin paper (≤150g / m 2 ): 0.2mm (shallow indentation);

[0062] Corrugated board (≥300g / m 2 ): 0.4mm (full cut-through);

[0063] Servo system calibration: set the roller body speed (default 20-50r / min) and axial positioning accuracy (±0.01mm) through the drive controller.

[0064] 2. Tool installation and debugging

[0065] Step 2.1: tool installation

[0066] Counter blade 4 installation:

[0067] Insert the counter blade 4 into the knife groove 3, and ensure that the bottom tooth shape is engaged with the anti-skid pattern in the groove;

[0068] Lock with fixed screws 6, and control the pre-tightening force through a torque wrench.

[0069] Point line knife 5 installation:

[0070] Insert the point line knife 5 blade outward into the knife groove 3;

[0071] Adjust the blade protrusion (0.3-0.5mm), and detect the height consistency through a feeler gauge;

[0072] Share the screw fixing with the counter blade 4 to avoid uneven stress on one side.

[0073] Step 2.2: Gap Calibration

[0074] Manually rotate the roller body to the position where the dot-line knife 5 is in contact with the knife-resisting strip 4. Use a feeler gauge to measure the gap:

[0075] If the gap is out of tolerance, fine-tune the fixed screw 6 or replace the knife-resisting strip 4 with a different thickness;

[0076] After calibration, run the machine for 2-3 empty cycles to observe if the knife is wobbling or making unusual noises.

[0077] 3. Processing Execution Flow

[0078] Step 3.1: Paper Positioning

[0079] Send the paper product into the roller body meshing area. Use a photoelectric sensor to detect the paper edge position, ensuring that it is aligned with the knife groove 3 with an error ≤0.5mm.

[0080] Step 3.2: Processing Mode Operation

[0081] Indentation Mode:

[0082] Run the roller body at a low speed (10-20r / min), and the dot-line knife 5 cooperates with the knife-resisting strip 4 to form an indentation line.

[0083] The pressure is dynamically adjusted by a servo motor to avoid tearing the paper product.

[0084] Cutting Mode:

[0085] Increase the speed to 30-50r / min, and the knife blade completely penetrates the paper layer. The waste is simultaneously removed by a negative pressure dust collection device.

[0086] Monitor the knife blade wear in real time. Check the sharpness of the blade edge after every 5000 cuts.

[0087] Step 3.3: Quality Inspection

[0088] Randomly select the processed paper products for inspection:

[0089] Indentation Quality: The crease line is straight and unbroken, with uniform depth.

[0090] Cutting Quality: The cut is smooth without burrs, and there are no uncut areas.

[0091] 4. Knife Replacement and Maintenance

[0092] Step 4.1: Quick Knife Replacement

[0093] Loosen the fixed screw 6 and remove the old knife.

[0094] Clean the remaining paper debris in the knife groove 3 and check the integrity of the anti-slip pattern.

[0095] Install new knife, recalibrate according to step 2.1.

[0096] Step 4.2: Periodic maintenance

[0097] Daily maintenance: Lubricate gear set, clean roll surface paper powder;

[0098] Monthly maintenance: Check the wear of the inner wall of the knife groove 3, repair or replace the roll body when the difference is more than 0.1mm.

[0099] 5. Abnormal handling

[0100] Knife offset alarm:

[0101] Phenomenon: indentation misplacement or cutting discontinuity;

[0102] Treatment: Immediately stop, check the engagement state of the anti-skid pattern and the screw pretightening force.

[0103] Paper product jam:

[0104] Phenomenon: paper product is retained between the rolls;

[0105] Treatment: Reverse the roll body for 0.5 turns to take out, check whether the knife edge protrusion is out of limit.

[0106] By adopting the above technical scheme disclosed by the utility model, the following beneficial effects are obtained:

[0107] Bidirectional ridge forming mechanism

[0108] Inward folding ridge forming: when the paper passes through the gap between the upper ridge forming roller 1 and the lower ridge forming roller 2, the point-line knife 5 of the upper roller impacts the paper downward, and under the support of the lower roller resistance strip 4, a fold line from top to bottom is formed, and the folding resistance in the fiber direction is reduced by 30%-50%.

[0109] Outward folding ridge forming: by adjusting the phase of the lower roller point-line knife 5 through the control system, the lower roller knife impacts the paper upward, and under the support of the upper roller resistance strip 4, a fold line from bottom to top is formed, solving the problem that the traditional unidirectional ridge forming cannot handle the reverse folding, and the failure rate is reduced from 15%-20% to ≤5%. And reliability.

[0110] Servo precise control

[0111] High-precision alignment: the servo motor monitors the axial position of the two rollers in real time, and realizes the alignment accuracy of ±0.01mm through the closed-loop control system. This high-precision control ensures that multiple knife grooves 3 can be aligned synchronously. When forming the tear line, the axial misalignment between the upper roller blade and the lower roller resistance strip 4 can be controlled to be ≤0.1mm, so that the impact force can be concentrated in the local area of the resistance strip 4, and the contact area is only 5-10mm 2 , effectively reducing the overall impact on the roll body and prolonging the service life of the equipment.

[0112] Intelligent adjustment: the servo control system also has intelligent adjustment function, can automatically adjust the speed of ridge making according to paper, ensure that the position of ridge making is accurate, and the effect of paper after folding is neat.

[0113] Modular maintenance design

[0114] Low-cost maintenance: the knife bar 4 is an independent modular component, which can be individually disassembled and replaced after wear, and the cost of a single module is about 500 yuan. Compared with the traditional process that requires the whole ridge making roller to be replaced (the cost of a single roller is 6000-8000 yuan), the modular design of the mechanism greatly reduces the maintenance cost, and the annual average maintenance cost is reduced by 87%.

[0115] The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should be considered the protection scope of the present application.

Claims

1. A paper product ridging mechanism, characterized in that, include: The upper ridge roller (1) and the lower ridge roller (2) are set in pairs, with the axes of the two rollers parallel and their surfaces closely attached; The circumferential surfaces of the upper basting roller (1) and the lower basting roller (2) are provided with transversely extending knife grooves (3), and the knife grooves (3) are distributed at equal intervals according to the specifications of paper products. A detachable abutment bar (4) is installed in the cutter groove (3), the height of which matches the depth of the cutter groove (3), and the thickness is 50% of the width of the cutter groove (3); The dot-line knife (5) is selectively installed in the knife groove (3) of the upper or lower ridge roller by fixing screws (6); The abutment strip (4) and the dotted line knife (5) are fixed together by the same set of fixing screws (6) to form a modular knife assembly structure.

2. The paper product ridging mechanism according to claim 1, characterized in that: The upper ridge roller (1) and the lower ridge roller (2) are equipped with meshing gear sets at their transmission ends. The two gears have the same module and a gear ratio of 1:1, so as to realize synchronous reverse rotation of the rollers.

3. The paper product ridging mechanism according to claim 1, characterized in that: The blade of the dotted line knife (5) protrudes 0.3-0.5mm from the surface of the ridge roller and forms a cutting and / or indentation fit gap with the abutment strip (4) of the opposite ridge roller.

4. The paper product ridging mechanism according to claim 1, characterized in that: The surface of the countersunk bar (4) is provided with equally spaced countersunk holes (7), and the spacing between the countersunk holes is an integer multiple of the spacing between the countersunk holes and the distribution of the countersunk grooves (3).

5. The paper product ridging mechanism according to any one of claims 1-4, characterized in that: The inner wall of the blade groove (3) is provided with anti-slip texture, and the bottom of the abutment bar (4) and the dotted line blade (5) are respectively provided with meshing tooth-shaped structures.

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