Cutting machine for adhesive tape production

Abstract

The invention relates to the technical field of adhesive tape cutting, in particular to a cutting machine for adhesive tape production, which comprises a cooling conveying table, a fixed cutting frame is arranged on the rear side of the cooling conveying table, and a plurality of rotary conveying rollers are uniformly arranged in parallel along the horizontal direction of the cooling conveying table. A plurality of rotary conveying rollers are horizontally arranged, the rollers are connected with a cooling conveying table through rotary joints, a hollow cooling bin is arranged, rubber strips are circularly cooled through refrigerants, the cooled rubber strips are stably conveyed to a fixed cutting frame through the rotary conveying rollers to be cut, and a movable cutting seat capable of sliding is arranged on the fixed cutting frame; the rubber strip is accurately cut in a staggered sliding mode, the temperature of the rubber strip is reduced to be below the brittle temperature before the rubber strip reaches a cutting area, it is ensured that materials are cut in a brittle state, the problems of plastic deformation and the like caused by high temperature are solved, the high-quality section is achieved, the product precision, appearance quality and sealing performance are improved, and the production efficiency and the yield are improved.

Description

Technical Field

[0001] This invention relates to the field of adhesive strip cutting technology, and more particularly to a cutting machine for adhesive strip production. Background Technology

[0002] As a key sealing, cushioning, bonding, or filling material, adhesive strips are widely used in many industrial fields such as automobile manufacturing, construction engineering, electronic product assembly, furniture manufacturing, and packaging. These adhesive strips are usually made of various polymer materials such as rubber, silicone, polyurethane, butyl rubber, EVA, or hot melt adhesive, and are supplied in roll or strip form. During the production process, according to the size requirements of the final product, the continuous adhesive strips need to be precisely and efficiently cut into specific lengths. At present, the cutting of adhesive strips mainly relies on various cutting equipment. The basic principle is usually to cut the adhesive strip by applying vertical pressure or combining horizontal shearing force.

[0003] Existing adhesive strip cutting equipment generally suffers from a significant technical defect during the cutting process. At the moment when the blade applies enormous pressure and shearing force to overcome the material strength and complete the cut, the adhesive strip material near the cutting point undergoes severe plastic deformation and a significant instantaneous temperature rise. This temperature rise effect, combined with the strong local pressure and shearing force at the moment of cutting, causes irreversible plastic deformation and elongation of the material in the cutting area, especially at the cut edge. The cut surface is uneven, and visible tensile deformation appears, which seriously affects the dimensional accuracy, appearance quality, and sealing or bonding performance of the product in subsequent use. This problem is particularly prominent when cutting materials with low heat distortion temperature, such as hot melt adhesive strips, causing the cut edge to stick to the blade. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a cutting machine for producing adhesive strips, so as to solve the problem that when cutting adhesive strips, the adhesive strip material is subjected to huge pressure and shear force, resulting in plastic deformation and temperature rise, which leads to uneven cutting surfaces and visible tensile deformation.

[0005] To achieve the above objectives, the present invention provides a cutting machine for producing adhesive strips, including a cooling conveyor table, a fixed cutting frame disposed on the rear side of the cooling conveyor table, and further comprising: A rotating conveyor roller, multiple rotating conveyor rollers are evenly and parallelly arranged along the horizontal direction of the cooling conveyor table. The outer end of each rotating conveyor roller is connected to a rotating joint. The rotating conveyor roller is rotatably connected to the cooling conveyor table through the rotating joint. The rotating conveyor roller conveys the rubber strip it carries to the fixed cutting frame. A hollow cooling chamber is located inside the rotating conveyor roller. Cooling input pipe and cooling output pipe are rotatably connected to the left and right ends of the hollow cooling chamber, respectively. Refrigerant is circulated into the hollow cooling chamber through the cooling input pipe and cooling output pipe to cool the rotating conveyor roller, and then the rubber strips carried on the rotating conveyor roller are cooled down. A movable cutting stand is vertically slidably arranged in the middle of the fixed cutting frame. An upper cutting stand and a lower cutting stand are symmetrically arranged in the middle of the movable cutting stand. Cutting blades are provided at the front end of the upper cutting stand and the rear end of the lower cutting stand. By sliding the adjacent movable cutting stands in an alternating manner, the cutting blades on the upper cutting stand and the cutting blades on the lower cutting stand are driven to interlock and cut the adhesive strip between them.

[0006] Furthermore, the left and right ends of the rotating conveyor roller are provided with rotating conveyor interfaces. The left and right ends of the rotating conveyor roller are rotatably connected to the cooling input pipe and the cooling output pipe respectively through the rotating conveyor interfaces. The outer end of the cooling output pipe is connected to a compressor, the other end of the compressor is connected to a radiator, the outer end of the radiator is connected to an expansion valve, and the cooling input pipe is connected to the radiator through the expansion valve.

[0007] Furthermore, the hollow cooling chamber is equipped with an intermittent conveying cylinder. Multiple cooling guide fins are evenly connected between the outer wall of the intermittent conveying cylinder and the inner wall of the rotating conveying roller. A horizontal output pipe is provided inside the intermittent conveying cylinder. Both the right end of the intermittent conveying cylinder and the left end of the horizontal output pipe are provided with connecting conveying ports. The left end of the intermittent conveying cylinder is connected to the cooling input pipe through a rotating conveying interface, and the right end of the horizontal output pipe is connected to the cooling output pipe through a rotating conveying interface.

[0008] Furthermore, a synchronous gear is provided on the outer side of the rotary joint, a drive chain is connected to the outer side of the synchronous gear, a conveying gear is connected to the outer end of the drive chain, a conveying motor is connected to the shaft end of the conveying gear, the conveying motor is fixedly connected to the cooling conveying table, and the conveying gear drives all synchronous gears to rotate through the drive chain, thereby driving all rotating conveying rollers to rotate through the synchronous gears and the rotary joint.

[0009] Furthermore, a movable cutting frame is connected to the outer side of the movable cutting seat, and a top pressure transmission block is provided on the top of the movable cutting frame. An arc-shaped top pressure groove is provided on the top of the top pressure transmission block, and a cutting cam is provided above the top pressure transmission block. The cutting cam and the arc-shaped top pressure groove are configured to cooperate with each other. A speed transmission box is connected to the shaft end of the cutting cam, and a cutting motor is connected to the shaft end of the speed transmission box. The cutting cam is rotatably connected to the fixed cutting frame.

[0010] Furthermore, the plurality of movable cutting seats are closely fitted and uniformly arranged along the horizontal center line of the fixed cutting frame. Vertical guide sleeves are provided at both ends of the movable cutting seats. A vertical guide rod is nested inside the vertical guide sleeve. The vertical guide rod is fixedly connected to the fixed cutting frame. The movable cutting seats are slidably connected to the vertical guide rod through the vertical guide sleeve. A vertical return spring is provided below the vertical guide sleeve.

[0011] Furthermore, a linkage traction sleeve is horizontally arranged in the middle of the movable cutting seat. A connecting support rod is nested and slidably connected to the inner side of the linkage traction sleeve. A fixed guide sleeve is nested and slidably connected to the front end of the connecting support rod. The fixed guide sleeve is fixedly connected to the fixed cutting frame. A horizontal return spring is connected to the front end of the connecting support rod. A horizontal traction rod is fixedly connected to the front side of the movable cutting frame. The linkage traction sleeve and the horizontal traction rod are nested and slidably connected to each other. The movable cutting frame is slidably arranged along the horizontal center line of the fixed cutting frame. The movable cutting frame moves horizontally by driving the horizontal traction rod to adjust and insert different numbers of linkage traction sleeves and corresponding movable cutting frames, while simultaneously pushing the connecting support rod to slide away from the linkage traction sleeve of the corresponding movable cutting seat.

[0012] Furthermore, a translation adjustment frame is provided on the outer side of the movable cutting frame, and a vertical guide rail is provided in the middle of the translation adjustment frame. The movable cutting frame is vertically slidably connected to the translation adjustment frame through the vertical guide rail. Horizontal guide sleeves are connected to both the left and right ends of the translation adjustment frame. A horizontal guide rod is nested inside the horizontal guide sleeve. The translation adjustment frame is slidably connected to the horizontal guide rod through the horizontal guide sleeve. An adjusting screw sleeve is connected to the outer side of the horizontal guide sleeve, and an adjusting screw is nested inside the adjusting screw sleeve. A stepper motor is connected to the shaft end of the adjusting screw.

[0013] Furthermore, both the front end of the upper cutting seat and the rear end of the lower cutting seat are provided with a tool mounting groove. The cutting tool is installed inside the tool mounting groove, and the cutting tool and the tool mounting groove are mutually fitted. The cutting tool has a square structure and is surrounded by four cutting edges. A rotary adjustment shaft is provided in the middle of the tool mounting groove, and a central connecting sleeve is provided in the middle of the cutting tool. The cutting tool is slidably and detachably connected to the rotary adjustment shaft through the central connecting sleeve. The rotary adjustment shaft drives the cutting tool to rotate for adjustment through the central connecting sleeve. A rotary adjustment motor is connected to the shaft end of the rotary adjustment shaft.

[0014] Furthermore, multiple locking slots are evenly arranged around the outer side of the cutting blade, and the locking slots are arranged corresponding to the cutting edge. A locking adjustment slot is provided at the center of the blade mounting slot. A locking block is slidably fitted inside the locking adjustment slot. The locking block and the locking slot are mutually coordinated. A locking spring is provided on the rear side of the locking block. An unlocking electromagnet is provided at the rear end of the locking adjustment slot.

[0015] The beneficial effects of this invention are as follows: As can be seen from the above description, the cutting machine for producing adhesive strips provided by this invention consists of a cooling conveyor table, a fixed cutting frame, rotating conveyor rollers, a hollow cooling chamber, and a movable cutting seat. The cooling conveyor table is located at the front, followed by the fixed cutting frame. Multiple rotating conveyor rollers are horizontally arranged in between. These rollers are connected to the cooling conveyor table via rotary joints and are equipped with a hollow cooling chamber, which circulates refrigerant to cool the adhesive strips. The rotating conveyor rollers smoothly deliver the cooled adhesive strips to the fixed cutting frame for cutting. The fixed cutting frame is equipped with a sliding movable cutting seat, each equipped with upper and lower cutting blades, which precisely cut the adhesive strips using a staggered sliding method. This design ensures that the adhesive strips are cooled to below their embrittlement temperature before reaching the cutting area, ensuring that the material is cut in a brittle state. This avoids problems such as plastic deformation caused by high temperatures, achieving a high-quality cross-section without burrs or curling edges, improving product precision, appearance quality, and sealing performance, and increasing production efficiency and yield. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of an embodiment of the present invention. Figure 2 This is a schematic diagram of the rear structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the cooling conveyor platform according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the bottom structure of the cooling conveyor platform according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the rotating conveyor roller junction according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the rotating conveyor roller according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the fixed cutting frame according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the translation adjustment frame according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the movable cutting seat according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the cutting tool according to an embodiment of the present invention.

[0018] The diagram is marked as follows: 1. Cooling conveyor table; 101. Drive chain; 102. Conveyor gear; 103. Conveyor motor; 104. Cooling input pipe; 105. Cooling output pipe; 106. Compressor; 107. Radiator; 108. Expansion valve; 2. Rotary conveyor roller; 201. Rotary joint; 202. Synchronous gear; 203. Cooling guide fins; 204. Rotary conveyor interface; 205. Hollow cooling chamber; 206. Interval conveyor cylinder; 207. Connecting conveyor port; 208. Horizontal output pipe; 3. Fixed cutting frame; 301. Cutting cam; 302. Speed ​​transmission box; 303. Cutting motor; 304. Horizontal guide rod; 305. Adjusting screw; 306. Stepper adjusting motor; 4. Translation adjusting frame; 401. Horizontal guide sleeve; 402. Adjusting screw 403. Vertical guide rail; 404. Moving cutting frame; 405. Horizontal traction rod; 406. Top pressure transmission block; 407. Arc-shaped top pressure groove; 5. Moving cutting seat; 501. Upper cutting seat; 502. Lower cutting seat; 503. Linkage traction sleeve; 504. Vertical guide sleeve; 6. Vertical guide rod; 601. Vertical return spring; 602. Fixed guide sleeve; 603. Connecting support rod; 604. Horizontal return tension spring; 7. Tool mounting groove; 701. Rotary adjustment shaft; 702. Rotary adjustment motor; 703. Locking adjustment groove; 704. Locking block; 705. Locking spring; 706. Unlocking electromagnet; 707. Locking nut; 8. Cutting tool; 801. Cutting edge; 802. Center connecting sleeve; 803. Locking slot. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, a cutting machine for producing adhesive strips includes a cooling conveyor table 1, a fixed cutting frame 3 is provided on the rear side of the cooling conveyor table 1, and further includes: Rotary conveyor roller 2, multiple rotary conveyor rollers 2 are evenly and parallelly arranged along the horizontal direction of cooling conveyor table 1. Rotary joint 201 is connected to the outer end of the rotary conveyor roller 2. The rotary conveyor roller 2 is rotatably connected to the cooling conveyor table 1 through the rotary joint 201. The rubber strip carried on it is conveyed to the fixed cutting frame 3 by rotating the rotary conveyor roller 2. Hollow cooling chamber 205 is located inside the rotating conveyor roller 2. Cooling input pipe 104 and cooling output pipe 105 are rotatably connected to the left and right ends of the hollow cooling chamber 205, respectively. Refrigerant is circulated into the hollow cooling chamber 205 through the cooling input pipe 104 and cooling output pipe 105 to cool the rotating conveyor roller 2, and then the rubber strip carried on the rotating conveyor roller 2 is cooled down. The movable cutting seat 5, multiple movable cutting seats 5 are vertically slidably arranged in the middle of the fixed cutting frame 3. The upper cutting seat 501 and the lower cutting seat 502 are symmetrically arranged in the middle of the movable cutting seat 5. The front end of the upper cutting seat 501 and the rear end of the lower cutting seat 502 are both provided with cutting blades 8. Through the staggered sliding of the adjacent movable cutting seats 5, the cutting blades 8 on the upper cutting seat 501 and the cutting blades 8 on the lower cutting seat 502 are driven to stagger each other, and the adhesive strip between them is cut.

[0022] In this embodiment, the device mainly includes a cooling conveyor table 1, a fixed cutting frame 3, a rotating conveyor roller 2, a hollow cooling chamber 205, and a movable cutting seat 5. The cooling conveyor table 1 is located at the front of the entire device, and the fixed cutting frame 3 is arranged at its rear. Multiple rotating conveyor rollers 2 are evenly and parallelly arranged along the horizontal direction of the cooling conveyor table 1. Each rotating conveyor roller 2 has a rotating joint 201 connected to its outer end, which is rotatably connected to the cooling conveyor table 1. When the rotating conveyor roller 2 rotates, it can smoothly convey the rubber strips it carries to the fixed cutting frame 3 for cutting. Each rotating conveyor roller 2 has a hollow cooling chamber 205 inside, and its left and right ends are rotatably connected to the cooling input pipe 104 and the cooling output pipe 105, respectively. The rotating conveyor roller 2 is cooled by circulating refrigerant into the hollow cooling chamber 205, thereby indirectly cooling the rubber strips carried on the rotating conveyor roller 2. Multiple movable cutting seats 5 are vertically slidably arranged in the middle of the fixed cutting frame 3. Each movable cutting seat 5 has an upper part symmetrically arranged in the middle. The upper cutting seat 501 and the lower cutting seat 502 are each equipped with cutting blades 8 at their front and rear ends. The adjacent movable cutting seats 5 work by sliding in a staggered manner, so that the cutting blades 8 on the upper cutting seat 501 and the cutting blades 8 on the lower cutting seat 502 cooperate with each other to cut the rubber strip between them. The device lowers the temperature of the rubber strip by pre-cooling it, so that the material changes from a highly elastic or viscous state to a brittle state. Therefore, it is more likely to undergo brittle fracture rather than plastic deformation during the cutting process, effectively avoiding quality problems such as cut deformation and curling.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, preferably, the device has rotary conveying interfaces 204 at both ends of the rotary conveying roller 2. These interfaces are specially designed rotary joints 201 that enable a sealed connection between the rotating components, i.e., the rotary conveying roller 2, and the fixed pipes, i.e., the cooling input pipe 104 and the cooling output pipe 105, ensuring that the refrigerant can continuously and stably flow into and out of the hollow cooling chamber 205 while the conveying roller is rotating, without leakage. The outer end of the cooling output pipe 105 is connected to a compressor 106. The compressor 106 compresses the refrigerant, which has already risen in temperature and is currently in a low-temperature, low-pressure gaseous state, from the rotating conveyor roller 2, transforming it into a high-temperature, high-pressure gaseous refrigerant. This high-temperature, high-pressure gaseous refrigerant is then sent to the radiator 107. In the radiator 107, the high-temperature, high-pressure gaseous refrigerant exchanges heat with the outside air or a water cooling system, releasing heat and condensing into a high-pressure, room-temperature liquid refrigerant. After flowing out of the radiator 107, the high-pressure, room-temperature liquid refrigerant enters the expansion valve 108. The expansion valve 108 acts as a throttling and depressurizing valve, rapidly reducing the pressure of the high-pressure liquid refrigerant to a low-temperature, low-pressure liquid or gas-liquid mixture. After being depressurized and cooled by the expansion valve 108, the low-temperature, low-pressure refrigerant re-enters the hollow cooling chamber 205 inside the rotating conveyor roller 2 through the cooling input pipe 104, beginning a new cycle. The heat absorption cooling cycle constitutes a complete, closed compression refrigeration cycle. The refrigerant absorbs heat from the rotating conveyor roller 2 and the rubber strip in the hollow cooling chamber 205, causing its own temperature to rise and possibly partially vaporizing. Subsequently, it is compressed by the compressor 106, condensed by the radiator 107, and throttled by the expansion valve 108, finally re-entering the cooling chamber at a low temperature to continuously provide cooling for the rotating conveyor roller 2 and the rubber strip. Thus, the device, utilizing core components such as the compressor 106, radiator 107, and expansion valve 108, can continuously and efficiently remove heat from the rotating conveyor roller 2 and the rubber strip. Compared to a simple cold water circulation, this system can maintain a lower and more stable cooling temperature, significantly improving cooling efficiency and effect. The efficient active cooling ensures that the rubber strip is fully pre-cooled to below its glass transition temperature or embrittlement temperature before reaching the cutting area.This allows the adhesive strip material to be cut in a brittle state where the molecular chain movement is frozen, fundamentally suppressing phenomena such as plastic deformation, stringing, and sticking to the blade caused by the material softening at high temperatures. Cutting in a brittle state causes the material to tend to undergo rapid and direct brittle fracture, resulting in a high-quality cross-section that is flat, smooth, burr-free, edge-free, and free from tensile deformation. This greatly improves the dimensional accuracy, appearance quality, and subsequent sealing or bonding performance of the product. The stable low-temperature environment eliminates the fluctuations in cutting quality caused by ambient temperature fluctuations or heat accumulation during continuous production, ensuring the stability of the production process, significantly reducing the defect rate, and improving overall production efficiency and yield. Furthermore, the active cooling system can flexibly adjust the cooling intensity according to the characteristics of different adhesive strip materials and environmental conditions by adjusting the power of the compressor 106, the refrigerant flow rate, or the set temperature, adapting to the cutting needs of various polymer materials.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, preferably, a coaxial spacer conveying cylinder 206 is arranged axially inside the hollow cooling chamber 205 of the rotating conveying roller 2. This cylinder divides the internal space of the hollow cooling chamber 205 into two annular flow channels. Multiple cooling guide fins 203 are evenly connected between the outer wall of the spacer conveying cylinder 206 and the inner wall of the rotating conveying roller 2. These fins not only provide structural support but, more importantly, act as highly efficient heat-conducting fins, greatly increasing the contact area and heat conduction path between the inner wall of the rotating conveying roller 2 and the coolant, accelerating the transfer of heat from the roller to the coolant. Simultaneously, the fins also play a guiding role, directing the coolant more orderly within the annular space. Inside the spacer conveyor cylinder 206, a horizontal output pipe 208 is provided. This pipe is coaxial with the spacer conveyor cylinder 206. Both the right end sidewall of the spacer conveyor cylinder 206 and the left end sidewall of the horizontal output pipe 208 have connecting conveying ports 207, which can be multiple holes or an annular groove, used to connect the flow channels inside and outside the spacer conveyor cylinder 206. The low-temperature coolant enters from the cooling input pipe 104, first flowing into the left end of the spacer conveyor cylinder 206 through the rotary conveying interface 204 at the left end. The coolant cannot directly enter the cylinder; it can only enter the outer annular space between the spacer conveyor cylinder 206 and the inner wall of the rotary conveying roller 2. Within this space, the coolant flows along the flow channels formed by the guide fins... The coolant flows from left to right. When it reaches the right end of the spacer conveyor 206, it enters the internal space of the spacer conveyor 206 through the connecting conveyor port 207 and flows into the left end of the horizontal output pipe 208. After entering the horizontal output pipe 208, the coolant flows from left to right along the pipe. When it reaches the right end of the horizontal output pipe 208, it connects with the cooling output pipe 105 through the rotary conveyor interface 204 at the right end, and finally exits from the rotary conveyor roller 2 and enters the external refrigeration circulation system. By setting the spacer conveyor 206 and the horizontal output pipe 208, the originally single hollow cavity is divided into at least multiple independent flow channels. The coolant must flow through these two flow channels to complete the circulation, which greatly extends the coolant circulation time. The longer flow path inside the rotating conveyor roller 2 means that the coolant has a longer contact time with the roller body, which can absorb more heat and thus improve the cooling efficiency of a single cycle. The dual-channel design and guide fins help the coolant to be distributed and flow more evenly inside the rotating conveyor roller 2, reducing areas of local overheating or insufficient cooling. This allows the entire roller body and even the rubber strips it carries to obtain a more uniform cooling effect, avoiding rubber strip deformation or cutting quality fluctuations caused by uneven cooling. Furthermore, more efficient heat exchange means that, under the premise of achieving the same cooling effect, the coolant flow rate can be reduced or the load on the external refrigeration system can be reduced, which helps to improve the energy utilization efficiency of the entire cooling system.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4, Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, preferably, a synchronous gear 202 is coaxially fixedly connected to the outside of the rotary joint 201 at both ends of each rotary conveyor roller 2. All synchronous gears 202 corresponding to the rotary conveyor rollers 2 are of the same specification and arranged on the same plane along the width direction of the cooling conveyor table 1. A drive chain 101, which can be a roller chain, toothed belt, or other flexible transmission component with a precise transmission ratio, surrounds and meshes with all the synchronous gears 202 fixed on the rotary joint 201. The drive chain 101 forms a closed loop, ensuring that all synchronous gears 202 can rotate synchronously. A conveying gear 102 is set on the outside of the drive chain 101, usually located at one end of the cooling conveyor table 1, such as the front or rear end. This conveying gear 102 meshes with the outside of the drive chain 101. A conveying motor 103, which is a servo motor or stepper motor, is fixedly connected to the shaft end of the conveying gear 102 via its output shaft to achieve precise speed and position control. The conveying motor 103 is securely fixed to the shaft end of the conveying gear 102 via a bracket or flange. On the frame of the cooling conveyor 1, to ensure the stability of power transmission, when the conveyor motor 103 starts and drives the conveyor gear 102 to rotate, the conveyor gear 102 drives the drive chain 101 to move through meshing. The moving drive chain 101 meshes and drives all the synchronous gears 202 connected to it to rotate synchronously. The rotation of the synchronous gears 202 is directly transmitted to the rotating conveyor rollers 2 through the rotary joint 201, thereby driving all the rotating conveyor rollers 2 to rotate synchronously at the same speed and direction, so as to achieve smooth, continuous and uniform conveying of the rubber strip.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, preferably, the multiple movable cutting seats 5 of the device are evenly arranged along the horizontal centerline of the fixed cutting frame 3 in a close fit, without gaps or with minimal gaps, ensuring the continuity of the cutting action and coverage of the entire width of the adhesive strip. Vertical guide sleeves 504 are fixedly installed at both ends of each movable cutting seat 5. The vertical guide rod 6 is a rigid rod, with its upper and lower ends firmly fixed to the frame of the fixed cutting frame 3, maintaining absolute verticality. The vertical guide sleeves 504 are fitted onto the outside of the vertical guide rod 6, forming a precise sliding fit, clearance fit, or the use of linear bearings. This allows the movable cutting seat 5 to slide smoothly and accurately only along the axial direction of the vertical guide rod 6, i.e., in the vertical direction, effectively limiting the movement of the movable cutting seat 5 in the direction of the vertical guide rod 6. Horizontal swaying or offset ensures the straightness and accuracy of the cutting motion. Below each vertical guide sleeve 504, near the lower stop point of the sliding path of the movable cutting seat 5, a vertical return spring 601 is provided. One end of this spring abuts against the base or fixed plate of the fixed cutting frame 3, and the other end abuts against the bottom of the movable cutting seat 5 or the lower edge of the vertical guide sleeve 504. The return spring provides an upward elastic force to reliably return the movable cutting seat 5 to its initial upper stop position after the cutting action is completed. All movable cutting seats 5 are connected and fixed together on a single movable cutting frame 404. The movable cutting frame 404 acts as a rigid connector, ensuring that all movable cutting seats 5 can move up and down synchronously as a whole. At the top center of component 04, a top-pressure transmission block 406 is fixedly installed. The top of the top-pressure transmission block 406 is machined with an arc-shaped top-pressure groove 407, i.e., a cam follower groove. Its arc-shaped surface matches the contour of the cutting cam 301. The contour of the cutting cam 301 is precisely designed, and its axis is rotatably connected to the fixed cutting frame 3 via bearings. The shaft end of the cutting cam 301 is connected to the output shaft of the speed transmission box 302. The speed transmission box 302, such as a speed reducer, is used to adjust the motor speed to obtain the required cutting frequency and torque. The input shaft of the speed transmission box 302 is connected to the cutting motor 303, which is a servo motor or a frequency converter motor, to achieve precise speed and position control. When the cutting motor 303 starts, it drives the cutting cam through the speed transmission box 302. When cam 301 rotates, the protruding part of the cam gradually enters the arc-shaped top pressure groove 407, applying downward pressure to the top pressure transmission block 406. This pressure is transmitted to all moving cutting seats 5 through the moving cutting frame 404, overcoming the elastic force of the vertical return spring 601, and driving the entire moving cutting seat 5 assembly to slide downward along the vertical guide rod 6. When the moving cutting seat 5 moves downward, its upper cutting seat 501 and the lower cutting seat 502 of the adjacent fixed moving cutting seat 5 interlock, driving the cutting blade 8 to cut the rubber strip located between them. When the protruding part of the cutting cam 301 rotates past the highest point, its profile begins to descend, reducing the pressure on the top pressure transmission block 406. At this time, the elastic force of the vertical return spring 601 is greater than the remaining pressure of the cam and the weight of the assembly.Push the movable cutting seat 5 assembly upwards along the vertical guide rod 6 to reset it to its initial position, ready for the next cutting cycle.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, preferably, a linkage traction sleeve 503 is horizontally arranged at the middle position of each movable cutting seat 5. A connecting support rod 603 runs through the area of ​​all movable cutting seats 5, and its outer side forms a nested sliding connection with all linkage traction sleeves 503. The connecting support rod 603 remains fixed. A fixed guide sleeve 602 is provided at the front end of the connecting support rod 603. This sleeve is fixed on the fixed cutting frame 3 and is used to guide the connecting support rod 603 to maintain a horizontal straight state. A horizontal return spring 604 is installed at the front end of the connecting support rod 603. One end of the spring abuts against the fixed guide sleeve 602 or the fixed plate, and the other end is connected to the connecting support rod 603. The horizontal return spring 604 provides a tendency force to push the connecting support rod 603 back, ensuring that the movable cutting seat 5 that is not actively pulled can be stably held in the connecting support position. On rod 603, the movable cutting frame 404 can not only move up and down, but is also designed to slide along the horizontal center line of the fixed cutting frame 3. A horizontal traction rod 405 is fixedly connected to the front side of the movable cutting frame 404. The linkage traction sleeve 503 is designed to be nested and slidably connected with the end of the horizontal traction rod 405. A translation adjustment frame 4 is connected to the outside of the movable cutting frame 404. A vertical guide rail 403 is provided in the middle of the translation adjustment frame 4. The movable cutting frame 404 is connected to the vertical guide rail 403 through a slider to ensure that the movable cutting frame 404 can still maintain the freedom of vertical up and down movement when the translation adjustment frame 4 moves. Horizontal guide sleeves 401 are provided at the left and right ends of the translation adjustment frame 4. A horizontal guide rod 304 is nested in the sleeve and fixed on the fixed cutting frame 3. This structure ensures that the translation adjustment frame 4 can only slide precisely in the horizontal direction. An adjustment screw sleeve 402 is connected to the outside of the horizontal guide sleeve 401, and an adjustment screw 305 is nested inside the adjustment screw sleeve 402. The shaft end of the adjustment screw 305 is connected to a stepper adjustment motor 306. The stepper adjustment motor 306 is fixed to the fixed cutting frame 3. The stepper adjustment motors 306 on both sides are controlled by the same motor controller to maintain synchronous rotation. In the initial state, all moving cutting seats 5, under the action of the horizontal return spring 604, have their linkage traction sleeves 503 fitted onto the connecting support rod 603, maintaining stability. When it is necessary to change the cutting length, i.e., change the number of moving cutting seats 5 involved in cutting, the stepper adjustment motor 306 starts, driving the adjustment screw 305 to rotate. The rotation of the adjustment screw 305 drives the adjustment screw sleeve 402 and the translation adjustment frame 4 connected to it to move precisely horizontally along the horizontal guide rod 304.The translation adjustment frame 4 drives the movable cutting frame 404 and its horizontal traction rod 405 to move together. The horizontal traction rod 405 moves to the target position, so that its end is inserted into the front end of the linkage traction sleeve 503 of the last movable cutting seat 5 that needs to participate in the cutting, so as to achieve nested connection. At the same time, the movement of the horizontal traction rod 405 will push the linkage traction sleeve 503 of the movable cutting seats 5 that do not need to participate in the cutting and are located in front of it, so that they overcome the resistance of the horizontal return spring 604 and slide backward along the connecting support rod 603 to disengage. These disengaged movable cutting seats 5 are only connected to the connecting support rod 603 by the linkage traction sleeve 503 and remain stationary. When the cutting cam 301 drives the movable cutting frame 404 to move up and down, only those movable cutting seats 5 connected to the horizontal traction rod 405 will follow and move up and down synchronously to complete the cutting of the adhesive strip. The unconnected movable cutting seats 5 remain stationary. By controlling the number of movable cutting seats 5 connected to the horizontal traction rod 405, the length of the cutting area can be precisely controlled. By driving the screw nut mechanism through the stepper motor 306, the horizontal position of the movable cutting frame 404 can be precisely and steplessly adjusted, thereby selectively connecting any number of movable cutting seats 5. This allows the equipment to flexibly adapt to the needs of adhesive strip products of different lengths and specifications without changing molds or making complex mechanical adjustments, greatly enhancing the versatility and production flexibility of the equipment.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, preferably, both the front end of the upper cutting seat 501 and the rear end of the lower cutting seat 502 are machined with tool mounting grooves 7 to accommodate and fix cutting tools 8. The cutting tools 8 have a square or rectangular structure, but have four working sides. All four sides are precision ground to form four sharp cutting edges 801, so that a single tool has four usable cutting edges. The cutting tools 8 are mounted on the rotary adjustment shaft 701 in the tool mounting groove 7 through their central connecting sleeve 802. The two are slidably and detachably connected, such as a spline connection, a sliding connection with a flat key, or a precision clearance fit, which can transmit torque and allow axial fine adjustment or disassembly. The rotary adjustment shaft 701 passes through the center of the tool mounting groove 7, with one end extending out and connected to the rotary adjustment shaft 701. The adjusting motor 702, a micro stepper motor or servo motor, has a locking nut 707 threadedly connected to its other end for locking the cutting blade 8 after installation. The adjusting motor 702 is fixed on the movable cutting base 5. When the cutting edge 801 needs to be changed, the adjusting motor 702 is activated, driving the adjusting shaft 701 to rotate. The adjusting shaft 701 drives the cutting blade 8 to rotate synchronously through the central connecting sleeve 802. Each rotation of 90 degrees precisely positions the new, sharp cutting edge 801 to the working position for cutting with the opposing blade. Four locking slots 803 are evenly arranged around the outside of the cutting blade 8, each slot precisely corresponding to a cutting edge 801. When a cutting edge is in the working position... When the cutting tool is in the correct position, its corresponding locking slot 803 should also be in the locked position. A locking adjustment slot 703 is provided in the central area of ​​the tool mounting slot 7. The locking block 704 is fitted into the locking adjustment slot 703 and can slide radially or axially. The front end shape of the locking block 704 matches the locking slot 803, allowing it to be inserted into the locking slot 803 for locking. A locking spring 705 is located on the rear side of the locking block 704, continuously applying a forward elastic force to the locking block 704, causing its front end to automatically engage in the currently aligned locking slot 803, thereby firmly locking the current rotational position of the cutting tool 8 and preventing accidental rotation during high-speed, high-load cutting. An unlocking electromagnet 706 is located at the rear end of the locking adjustment slot 703. When rotation is required... When the cutting blade 8 is worn, the control system issues a command, energizing the unlocking electromagnet 706 to generate magnetic force. This force overcomes the elasticity of the locking spring 705, pulling the locking block 704 backward and disengaging its front end from the locking slot 803. This releases the lock on the cutting blade 8, allowing the rotary adjustment motor 702 to drive the blade to rotate. The square cutting blade 8 has four usable cutting edges 801. When one edge wears out, it can automatically rotate 90 degrees to switch to the next new edge for continued use. This extends the effective lifespan of a single blade by four times, significantly reducing the frequency of blade replacement and procurement costs. By integrating the rotary adjustment motor 702, the locking / unlocking mechanism, and the control system, fully automatic and rapid switching of the cutting edge 801 after wear is achieved, eliminating the need for manual blade replacement during machine downtime.This significantly improves production continuity and efficiency, and reduces manual intervention and downtime.

[0029] The cutting machine for producing adhesive strips provided by this invention comprises a cooling conveyor table 1, a fixed cutting frame 3, rotating conveyor rollers 2, a hollow cooling chamber 205, and a movable cutting seat 5. The cooling conveyor table 1 is positioned at the front, with the fixed cutting frame 3 located behind it. Multiple rotating conveyor rollers 2 are horizontally arranged between them. These rollers are connected to the cooling conveyor table 1 via rotary joints 201 and are equipped with hollow cooling chambers 205, which circulate refrigerant to cool the adhesive strips. The rotating conveyor rollers 2 smoothly deliver the cooled adhesive strips to the fixed cutting frame 3 for cutting. The fixed cutting frame 3 is equipped with a slidable movable cutting seat 5, each with upper and lower cutting blades 8, employing a staggered sliding method to precisely cut the adhesive strips. This design ensures that the adhesive strips are cooled to below their embrittlement temperature before reaching the cutting area, guaranteeing that the material is cut in a brittle state. This avoids problems such as plastic deformation caused by high temperatures, achieving a high-quality cross-section without burrs or curling edges, improving product precision, appearance quality, and sealing performance, and increasing production efficiency and yield.

[0030] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A cutting machine for producing adhesive strips, comprising a cooling conveyor table (1), wherein a fixed cutting frame (3) is provided on the rear side of the cooling conveyor table (1), characterized in that, Also includes: Rotary conveyor roller (2), multiple rotary conveyor rollers (2) are evenly and parallelly arranged in the horizontal direction of the cooling conveyor table (1). The outer end of the rotary conveyor roller (2) is connected to a rotary joint (201). The rotary conveyor roller (2) is rotatably connected to the cooling conveyor table (1) through the rotary joint (201). The rubber strip carried on it is conveyed to the fixed cutting frame (3) by the rotation of the rotary conveyor roller (2). A hollow cooling chamber (205) is disposed inside the rotating conveyor roller (2). Cooling input pipe (104) and cooling output pipe (105) are rotatably connected to the left and right ends of the hollow cooling chamber (205). Refrigerant is circulated into the hollow cooling chamber (205) through the cooling input pipe (104) and cooling output pipe (105) to cool the rotating conveyor roller (2), and then the rubber strip carried on the rotating conveyor roller (2) is cooled down. A movable cutting seat (5) is vertically slidably arranged in the middle of the fixed cutting frame (3). An upper cutting seat (501) and a lower cutting seat (502) are symmetrically arranged in the middle of the movable cutting seat (5). Cutting blades (8) are provided at the front end of the upper cutting seat (501) and the rear end of the lower cutting seat (502). By sliding the adjacent movable cutting seats (5) together, the cutting blades (8) on the upper cutting seat (501) and the cutting blades (8) on the lower cutting seat (502) are driven to interlock and cut the adhesive strip between them.

2. The cutting machine for producing adhesive strips according to claim 1, characterized in that, The left and right ends of the rotating conveying roller (2) are provided with rotating conveying interfaces (204). The left and right ends of the rotating conveying roller (2) are rotatably connected to the cooling input pipe (104) and the cooling output pipe (105) respectively through the rotating conveying interfaces (204). The outer end of the cooling output pipe (105) is connected to a compressor (106). The other end of the compressor (106) is connected to a radiator (107). The outer end of the radiator (107) is connected to an expansion valve (108). The cooling input pipe (104) is connected to the radiator (107) through the expansion valve (108).

3. The cutting machine for producing adhesive strips according to claim 2, characterized in that, The hollow cooling chamber (205) is equipped with an intermittent conveying cylinder (206). Multiple cooling guide fins (203) are uniformly connected between the outer wall of the intermittent conveying cylinder (206) and the inner wall of the rotating conveying roller (2). The intermittent conveying cylinder (206) is equipped with a horizontal output pipe (208). Both the right end of the intermittent conveying cylinder (206) and the left end of the horizontal output pipe (208) are provided with a connecting conveying port (207). The left end of the intermittent conveying cylinder (206) is connected to the cooling input pipe (104) through a rotating conveying interface (204). The right end of the horizontal output pipe (208) is connected to the cooling output pipe (105) through a rotating conveying interface (204).

4. The cutting machine for producing adhesive strips according to claim 1, characterized in that, A synchronous gear (202) is provided on the outer side of the rotary joint (201). A drive chain (101) is connected to the outer side of the synchronous gear (202). A conveying gear (102) is connected to the outer end of the drive chain (101). A conveying motor (103) is connected to the shaft end of the conveying gear (102). The conveying motor (103) is fixedly connected to the cooling conveying table (1). The conveying gear (102) drives all synchronous gears (202) to rotate through the drive chain (101), and then drives all rotating conveying rollers (2) to rotate through the synchronous gears (202) and the rotary joint (201).

5. The cutting machine for producing adhesive strips according to claim 1, characterized in that, A movable cutting frame (404) is connected to the outside of the movable cutting seat (5). A top pressure transmission block (406) is provided on the top of the movable cutting frame (404). An arc-shaped top pressure groove (407) is provided on the top of the top pressure transmission block (406). A cutting cam (301) is provided above the top pressure transmission block (406). The cutting cam (301) and the arc-shaped top pressure groove (407) are configured to cooperate with each other. A speed transmission box (302) is connected to the shaft end of the cutting cam (301). A cutting motor (303) is connected to the shaft end of the speed transmission box (302). The cutting cam (301) is rotatably connected to the fixed cutting frame (3).

6. The cutting machine for producing adhesive strips according to claim 1, characterized in that, The plurality of movable cutting seats (5) are arranged in close contact and uniformly along the horizontal center line of the fixed cutting frame (3). Vertical guide sleeves (504) are provided at both the left and right ends of the movable cutting seats (5). A vertical guide rod (6) is nested inside the vertical guide sleeve (504). The vertical guide rod (6) is fixedly connected to the fixed cutting frame (3). The movable cutting seat (5) is slidably connected to the vertical guide rod (6) through the vertical guide sleeve (504). A vertical return spring (601) is provided below the vertical guide sleeve (504).

7. The cutting machine for producing adhesive strips according to claim 5, characterized in that, A linkage traction sleeve (503) is horizontally arranged in the middle of the movable cutting seat (5). A connecting support rod (603) is nested and slidably connected to the inner side of the linkage traction sleeve (503). A fixed guide sleeve (602) is nested on the outer side of the front end of the connecting support rod (603). The fixed guide sleeve (602) is fixedly connected to the fixed cutting frame (3). A horizontal reset spring (604) is connected to the front end of the connecting support rod (603). A horizontal traction rod is fixedly connected to the front side of the movable cutting frame (404). (405) The linkage traction sleeve (503) and the horizontal traction rod (405) are nested and slidably connected to each other. The movable cutting frame (404) is slidably arranged along the horizontal center line of the fixed cutting frame (3). The movable cutting frame (404) moves horizontally by driving the horizontal traction rod (405) to adjust and insert different numbers of linkage traction sleeves (503) and corresponding movable cutting frames (404), while pushing the connecting support rod (603) to slide away from the linkage traction sleeve (503) of the corresponding movable cutting seat (5).

8. The cutting machine for producing adhesive strips according to claim 7, characterized in that, A translation adjustment frame (4) is provided on the outer side of the movable cutting frame (404). A vertical guide rail (403) is provided in the middle of the translation adjustment frame (4). The movable cutting frame (404) is vertically slidably connected to the translation adjustment frame (4) through the vertical guide rail (403). Horizontal guide sleeves (401) are connected to both the left and right ends of the translation adjustment frame (4). A horizontal guide rod (304) is nested inside the horizontal guide sleeve (401). The translation adjustment frame (4) is slidably connected to the horizontal guide rod (304) through the horizontal guide sleeve (401). An adjusting screw sleeve (402) is connected to the outer side of the horizontal guide sleeve (401). An adjusting screw (305) is nested inside the adjusting screw sleeve (402). A stepper motor (306) is connected to the shaft end of the adjusting screw (305).

9. The cutting machine for producing adhesive strips according to claim 1, characterized in that, The front end of the upper cutting seat (501) and the rear end of the lower cutting seat (502) are both provided with a knife mounting groove (7). The cutting knife (8) is installed inside the knife mounting groove (7). The cutting knife (8) and the knife mounting groove (7) are mutually cooperated. The cutting knife (8) has a square structure and is surrounded by four cutting edges (801). A rotary adjustment shaft (701) is provided in the middle of the knife mounting groove (7). A central connecting sleeve (802) is provided in the middle of the cutting knife (8). The cutting knife (8) is slidably and detachably connected to the rotary adjustment shaft (701) through the central connecting sleeve (802). The rotary adjustment shaft (701) drives the cutting knife (8) to rotate for adjustment through the central connecting sleeve (802). A rotary adjustment motor (702) is connected to the shaft end of the rotary adjustment shaft (701).

10. The cutting machine for producing adhesive strips according to claim 9, characterized in that, The cutting tool (8) is uniformly surrounded by multiple locking slots (803), which correspond to the cutting edge (801). A locking adjustment slot (703) is provided at the center of the tool mounting slot (7). A locking block (704) is slidably fitted inside the locking adjustment slot (703). The locking block (704) and the locking slot (803) cooperate with each other. A locking spring (705) is provided on the rear side of the locking block (704). An unlocking electromagnet (706) is provided at the rear end of the locking adjustment slot (703).

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