Energy-saving concrete block production equipment

Abstract

The invention discloses energy-saving concrete block production equipment, and relates to the technical field of concrete block processing, and the energy-saving concrete block production equipment comprises a conveying mechanism used for bearing and conveying concrete blocks; the rack is erected right above the conveying mechanism, and the rack is of a frame type structure; the lifting assembly is movably assembled on the inner side of the rack in the vertical direction, and the lifting assembly is slidably provided with a moving frame in the horizontal direction; the cut-in section, the constant speed section and the cut-out section of the first driving cam are matched with the first reset spring, the cut-in section pushes the abutting sliding plate to move at a slow speed, a cutting wire cuts in at a slow speed, and surface aggregate is prevented from being caved; the constant-speed section drives the cutting wires to reciprocate at a high speed, friction time with compact aggregates is shortened, and overheating abrasion of wire bodies is reduced; and after the cut-out section is out of contact, the first reset spring pulls the abutting sliding plate to move back, the cutting wire penetrates slowly, and the tail end of the building block is prevented from being torn.

Description

Technical Field

[0001] This invention relates to the field of concrete block processing technology, specifically to an energy-saving concrete block production equipment. Background Technology

[0002] Concrete blocks are building components made primarily of cement, aggregates (sand, gravel, cinders, etc.), and water. They possess advantages such as high strength, good durability, convenient construction, and economic and environmental friendliness. They effectively improve the stability and safety of buildings and are easy to install, allowing for the production of various specifications and shapes. They are mainly used for building walls and perimeter walls. The processing of concrete blocks mainly includes raw material proportioning, mixing, molding, and curing. Cutting is a crucial step in the later stages, using specialized cutting equipment to precisely divide the hardened blocks to meet different size or irregular structural requirements. Common cutting equipment includes metal cutting wire, concrete cutting machines, and electric saws.

[0003] An existing patent (publication number: CN120170901A) discloses a cutting device for processing concrete blocks, including a frame, a lifting frame, and a cutting wire. The frame is equipped with a lifting assembly for moving the lifting frame up and down. The lifting frame has a movable frame, with a wire feeding assembly and a wire take-up assembly on its bottom sides for mounting the cutting wire. A first clamping member and a second clamping member are provided between the wire feeding assembly and the wire take-up assembly to fix the cutting wire. The lifting frame has a drive assembly for reciprocating the movable frame. The top of the second clamping member has a connecting member that can lock onto the movable frame. This device, through the cooperation of the wire feeding and take-up assembly and the wire fixing structure, allows for periodic adjustment of the cutting wire's working area during cutting operations, extending its service life and reducing maintenance costs. When the cutting wire breaks unexpectedly, it can replace manual installation and fixing of the cutting wire.

[0004] The aforementioned cutting device can cut concrete blocks by reciprocating the metal cutting wire and coordinating with the lifting component. While it can complete the cutting operation, it cannot adjust the reciprocating frequency of the cutting wire. Because concrete is generally brittle and has uneven aggregate distribution, maintaining a constant cutting speed can easily cause problems. For example, when the metal wire first contacts the concrete, the impact force on the block surface is concentrated. If the speed is too high, it may cause aggregate to crumble and the edges to crack, resulting in chipped edges. As the cutting depth increases, due to the dense internal structure of concrete, maintaining a constant cutting speed may cause continuous high-intensity friction between the cutting wire and the aggregate, leading to overheating, increased wear, and even wire breakage. When the metal wire is close to penetrating the concrete, the remaining connecting parts of the block have reduced strength. If high-speed cutting is still used at this point, it is easy to cause tearing, resulting in irregular cuts that require additional grinding.

[0005] To address these issues, we designed an energy-saving concrete block production equipment. Summary of the Invention

[0006] The purpose of this invention is to provide an energy-saving concrete block production equipment to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides an energy-saving concrete block production equipment, comprising: a conveying mechanism for carrying and conveying concrete blocks; a frame erected directly above the conveying mechanism, the frame having a frame structure; and a lifting assembly movably assembled inside the frame in a vertical direction, the lifting assembly having a sliding frame slidably arranged in a horizontal direction, and the inner side of the sliding frame having multiple cutting wires for cutting blocks spaced apart along the length direction. A drive unit is provided on one side of the lifting assembly. The drive unit includes a transmission assembly for transmitting power and a speed adjustment assembly for controlling the reciprocating speed of the cutting wire. The speed adjustment assembly drives the moving frame to slide back and forth in the horizontal direction through the transmission assembly, and enables the reciprocating speed of the cutting wire to change in stages, such as slow entry, fast middle section, and slow exit, to adapt to the cutting requirements of concrete blocks.

[0008] Further, the lifting assembly includes a rectangular lifting frame, the moving frame is horizontally slidably disposed within the lifting frame, the driving component is fixed to one outer wall of the lifting frame via a horizontally disposed mounting plate, and the transmission assembly and speed adjustment assembly are both disposed on the same side of the mounting plate; the speed adjustment assembly includes: a circular mounting frame rotatably mounted on the side of the mounting plate, the axis of the mounting frame being perpendicular to the mounting plate; an annular transmission gear ring coaxially rotatably mounted on the inner side of the mounting frame; a plurality of driving gears evenly spaced along the circumference of the mounting frame, each of the driving gears being rotatably mounted on the inner side of the mounting frame and meshing with the transmission gear ring; a driven rack meshing with each of the driving gears, the outer wall of the mounting frame having a strip-shaped groove adapted to the driven rack, the driven rack sliding along the strip-shaped groove, and one end of the rack extending to the outer side of the mounting frame and connected to an arc-shaped block; and a first servo motor fixed on the side of the mounting plate away from the mounting frame, the driving end of the first servo motor penetrating the mounting plate and fixedly connected to the mounting frame, used to drive the mounting frame to drive the arc-shaped block to rotate synchronously.

[0009] Furthermore, the speed adjustment assembly includes a cam drive unit for controlling the rotational speed of the drive gear. The cam drive unit includes a mounting gear coaxially fixed with one of the drive gears, the mounting gear being located on the outside of the mounting frame; a connecting rack meshing with the mounting gear, the outer wall of the mounting frame being fixed with a slide rail for supporting the connecting rack, the connecting rack sliding along the slide rail; and a cam transmission structure for driving the connecting rack to slide, the cam transmission structure engaging with one end of the connecting rack to drive the mounting gear to rotate synchronously via the connecting rack, thereby adjusting the rotational speed of the drive gear.

[0010] Furthermore, the cam transmission structure includes a second servo motor fixed to the outer wall of the mounting frame; and a first drive cam fixed to the drive end of the second servo motor. A first fixing plate is fixed to the outer wall of the mounting frame, and a connecting post is slidably passed through the first fixing plate in the horizontal direction; an abutting slide plate is fixed to one end of the connecting post, and the abutting slide plate abuts against the outer periphery of the first drive cam; a connecting plate is fixed to the other end of the connecting post, and the side of the connecting plate away from the connecting post is fixedly connected to one end of the connecting rack; a first return spring is sleeved on the outside of the connecting post, one end of the first return spring is fixedly connected to the first fixing plate, and the other end is fixedly connected to the abutting slide plate, so that the abutting slide plate is always in contact with the profile of the first drive cam.

[0011] Furthermore, the outer periphery of the first driving cam is divided into an entry segment, a constant speed segment, and an exit segment along its counterclockwise rotation direction, with smooth transitions between the three segments. The entry segment is a cosine acceleration curve, corresponding to the slow entry phase of the cutting wire, used to reduce the initial impact of cutting. The constant speed segment is an Archimedean spiral, corresponding to the fast middle phase of the cutting wire, used to improve cutting efficiency. The exit segment is a cosine acceleration curve symmetrical to the entry segment, corresponding to the slow exit phase of the cutting wire, used to prevent cracking at the cut end of the block. When the first driving cam rotates to the exit segment, the minimum lift of the exit segment is less than the initial contact radius of the contact plate. The contact plate moves back synchronously with the exit segment profile under the elastic restoring force of the first return spring.

[0012] Furthermore, it also includes a delay assembly disposed between the connecting rack and the frame. The delay assembly includes a first fixed seat fixed to the upper surface of the connecting rack, a connecting tooth block disposed at one end of the connecting rack, a second fixed seat fixed to the upper surface of the connecting tooth block, a connecting rod horizontally inserted into the second fixed seat and fixed at one end to the first fixed seat, a second return spring sleeved on the outside of the connecting rod, and a second fixed plate fixed to the end of the connecting rod away from the first fixed seat. One end of the second return spring is fixedly connected to the first fixed seat, and the other end is fixedly connected to the second fixed seat. It is used to delay the return speed of the connecting rack through elastic deformation, thereby extending the contact time between the first drive cam at a constant speed and the contact plate, ensuring that the middle section of the cutting wire meets the requirements of blocks of different thicknesses for rapid cutting.

[0013] Furthermore, a second drive cam is arranged parallel to one side of the first drive cam. The second drive cam and the first drive cam are coaxially sleeved on the drive end of the second servo motor, and their opposing surfaces are in close contact. Both the first drive cam and the second drive cam are provided with concentric arc-shaped adjustment grooves. A limiting bolt for limiting the relative position of the first drive cam and the second drive cam is inserted in the arc-shaped adjustment groove. The end of the limiting bolt is threaded with an anti-loosening nut to adapt to the cutting speed adjustment requirements of blocks of different thicknesses.

[0014] Furthermore, the transmission assembly includes a synchronous wheel rotatably connected to the side of the mounting plate, the rim of the synchronous wheel cooperating with a circular drive ring composed of multiple arc-shaped blocks, and a synchronous belt made of elastic material connecting the synchronous wheel and the drive ring; a connecting strip with one end hinged to the eccentric position of the synchronous wheel; and a transmission strip with one end hinged to the end of the connecting strip away from the synchronous wheel, the other end of the transmission strip being hinged to one side outer wall of the moving frame; when the synchronous wheel rotates, the movement frame is driven to slide horizontally back and forth along the lifting frame through the cooperation of the connecting strip and the transmission strip.

[0015] Furthermore, the inner side of the movable frame is also provided with an adjustment mechanism for adjusting the distance between the cutting wires. The adjustment mechanism includes multiple tensioning wheels that are rotatably arranged at intervals along the width direction of the movable frame. The wheel surface of each tensioning wheel abuts against the outer wall of the cutting wire. An installation rod is rotatably connected inside the movable frame. The installation rod has multiple sets of grooves. Each set of grooves has two threaded grooves, and the thread directions of the two threaded grooves are opposite. A transmission nut is connected to one side of the tensioning wheel. The transmission nut is threaded onto the threaded groove. A first drive motor that drives the installation rod to rotate is connected to one side of the movable frame.

[0016] Furthermore, the lifting assembly also includes a transmission screw rotatably connected within the frame, the lifting frame being threaded onto the transmission screw, and a second drive motor for driving the transmission screw to rotate connected to the frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The first drive cam's entry section, constant speed section, and exit section cooperate with the first return spring. The entry section pushes the abutment slide plate to move slowly, so that the cutting wire cuts in slowly and avoids the surface aggregate from falling off. The constant speed section drives the cutting wire to reciprocate at high speed, reducing the friction time with the dense aggregate and reducing the overheating and wear of the wire. After the exit section disengages from the contact, the first return spring pulls the abutment slide plate back, and the cutting wire slowly penetrates, avoiding tearing at the end of the block.

[0018] 2. The first drive cam, the second drive cam and the delay component work together to adjust the relative position of the two cams by loosening the anti-loosening nut, thereby changing the overlapping area of ​​the uniform speed section of the two cams and adapting to the cutting needs of concrete of different thicknesses.

[0019] 3. When the connecting rack enters the reset stroke, the second reset spring is compressed, generating an elastic reaction force, which slows down the reset speed of the connecting rack and prolongs the contact time between the double cam constant speed section and the contact plate. This mechanism ensures that thick blocks receive sufficient and rapid cutting time to avoid incomplete cutting of concrete, while thin blocks are prevented from being over-cut, thus improving the cutting quality of multi-specification blocks. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a cross-sectional view of the present invention; Figure 5 This is a top view of the present invention; Figure 6 For the present invention Figure 1 Enlarged view of the structure at point A in the middle; Figure 7 For the present invention Figure 4 Enlarged view of the structure at point B; Figure 8 For the present invention Figure 2 Enlarged view of the structure at point C; Figure 9 For the present invention Figure 8 Enlarged view of the structure at point D; Figure 10 For the present invention Figure 3 Enlarged view of the structure at point E in the middle; Figure 11 For the present invention Figure 5 Enlarged view of the structure at point F.

[0021] In the diagram: 1. Conveying mechanism; 2. Frame; 3. Lifting frame; 4. Moving frame; 5. Cutting wire; 6. Mounting plate; 7. Mounting frame; 8. Transmission gear ring; 9. Drive gear; 10. Driven rack; 11. Arc block; 12. First servo motor; 13. Second servo motor; 14. First drive cam; 14a. Cutting section; 14b. Constant speed section; 14c. Cutting out section; 15. First fixed plate; 16. Contact slide plate; 17. Connecting column; 18. First return spring; 19. Connecting plate; 2 0. Connecting rack; 21. Installing gear; 22. Connecting gear block; 23. First fixed seat; 24. Second fixed seat; 25. Connecting rod; 26. Second return spring; 27. Second fixed plate; 28. Second drive cam; 29. ​​Limit bolt; 30. Synchronous pulley; 31. Connecting bar; 32. Transmission bar; 33. Synchronous belt; 34. Mounting rod; 35. Threaded groove; 36. Transmission nut; 37. Tensioner; 38. First drive motor; 39. Transmission screw; 40. Second drive motor. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-11This invention provides a technical solution: an energy-saving concrete block production equipment, comprising: a conveying mechanism 1 for carrying and conveying concrete blocks; a frame 2 erected directly above the conveying mechanism 1, the frame 2 having a frame structure; a lifting assembly movably mounted on the inner side of the frame 2 in a vertical direction, the lifting assembly having a sliding frame 4 slidably arranged in a horizontal direction, the inner side of the sliding frame 4 having multiple cutting wires 5 for cutting blocks spaced apart along its length; a driving component disposed on one side of the lifting assembly, the driving component including a transmission component for transmitting power and a speed adjustment component for controlling the reciprocating speed of the cutting wires 5; the speed adjustment component drives the sliding frame 4 to reciprocate in a horizontal direction through the transmission component, and enables the reciprocating speed of the cutting wires 5 to exhibit a phased change of slow entry speed, fast middle section speed, and slow exit speed, in order to adapt to the cutting requirements of concrete blocks.

[0024] In practice, the conveying mechanism 1 will transport the concrete blocks to be cut to the area directly below the frame 2; The lifting assembly moves vertically along the frame 2, causing the moving frame 4 and the cutting wire 5 to approach the block. The speed adjustment assembly of the drive component drives the moving frame 4 to slide back and forth in the horizontal direction through the transmission assembly, so that the reciprocating speed of the cutting wire 5 is forced to show a staged change of slow entry, fast middle section, and slow exit. During the cutting process, the lifting component gradually descends, cooperating with the variable speed reciprocating motion of the cutting wire 5 to complete the block cutting. This setting allows for slow entry during the cutting process to avoid excessive initial impact of the cutting wire 5, which could cause surface aggregate to crumble. The fast speed in the middle section reduces the friction time between the cutting wire 5 and the dense aggregate, reducing the risk of wire overheating, wear, and breakage. Finally, the slow exit speed prevents the remaining connecting parts of the block from being torn due to high-speed cutting, reducing subsequent grinding processes.

[0025] See Figure 1 , Figure 6 , Figure 7 and Figure 10The lifting assembly includes a rectangular lifting frame 3, a moving frame 4 horizontally slidably disposed within the lifting frame 3, and a driving component fixed to one outer wall of the lifting frame 3 by a horizontally disposed mounting plate 6. The transmission assembly and the speed adjustment assembly are both disposed on the same side of the mounting plate 6. The speed adjustment assembly includes a circular mounting frame 7 rotatably mounted on the side of the mounting plate 6, the axis of which is perpendicular to the mounting plate 6; an annular transmission gear ring 8 coaxially rotatably mounted inside the mounting frame 7; and multiple drive gears 9 evenly spaced along the circumference of the mounting frame 7. All 9 are rotatably mounted inside the mounting frame 7 and mesh with the transmission gear ring 8; the driven rack 10 meshes with each of the drive gears 9, and the outer wall of the mounting frame 7 has a strip-shaped groove adapted to the driven rack 10. The driven rack 10 slides along the strip-shaped groove, and one end of it extends to the outside of the mounting frame 7 and is connected to an arc-shaped block 11; the first servo motor 12 is fixed on the side of the mounting plate 6 away from the mounting frame 7. The drive end of the first servo motor 12 passes through the mounting plate 6 and is fixedly connected to the mounting frame 7, and is used to drive the mounting frame 7 to drive the arc-shaped block 11 to rotate synchronously.

[0026] In specific implementation, when the transmission gear ring 8 rotates, it simultaneously drives the drive gear 9 to rotate synchronously around its own axis; the outer teeth of each drive gear 9 mesh with a driven rack 10, and the outer side wall of the mounting frame 7 is provided with a strip-shaped groove adapted to the driven rack 10, providing sliding guidance for the driven rack 10. When the drive gear 9 rotates, it pushes the driven rack 10 to slide back and forth in a straight line along the strip-shaped groove; one end of the driven rack 10 extends to the outside of the mounting frame 7 and is fixedly connected to the arc block 11. Therefore, when the driven rack 10 slides, it synchronously drives the arc block 11 to perform reciprocating motion. Multiple arc blocks 11 together form a circular drive ring, which is driven by the first servo motor 12 to rotate.

[0027] See Figure 8 and Figure 9 The speed regulation component includes a cam drive unit for controlling the rotational speed of the drive gear 9. The cam drive unit includes a mounting gear 21 coaxially fixed to one of the drive gears 9, the mounting gear 21 being located on the outside of the mounting frame 7; a connecting rack 20 meshing with the mounting gear 21, the outer wall of the mounting frame 7 having a slide rail fixed for supporting the connecting rack 20, the connecting rack 20 sliding along the slide rail; and a cam transmission structure for driving the connecting rack 20 to slide, the cam transmission structure engaging with one end of the connecting rack 20 to drive the mounting gear 21 to rotate synchronously via the connecting rack 20, thereby adjusting the rotational speed of the drive gear 9.

[0028] In practice, when the cam transmission structure pushes the connecting rack 20 to slide closer to the mounting gear 21, the connecting rack 20 engages and drives the mounting gear 21 to rotate, which in turn drives the coaxial drive gear 9 to rotate, thereby controlling the sliding speed of the driven rack 10 and thus affecting the reciprocating frequency of the cutting wire 5.

[0029] See Figure 8 The cam drive structure includes a second servo motor 13 fixed to the outer wall of the mounting frame 7; and a first drive cam 14 fixed to the drive end of the second servo motor 13. A first fixing plate 15 is fixed to the outer wall of the mounting frame 7, and a connecting post 17 is slidably passed through the first fixing plate 15 in the horizontal direction; an abutting slide plate 16 is fixed to one end of the connecting post 17, and the abutting slide plate 16 abuts and engages with the outer periphery of the first drive cam 14; a connecting plate 19 is fixed to the other end of the connecting post 17, and the side of the connecting plate 19 away from the connecting post 17 is fixedly connected to one end of the connecting rack 20; a first return spring 18 is sleeved on the outside of the connecting post 17, one end of the first return spring 18 is fixedly connected to the first fixing plate 15, and the other end is fixedly connected to the abutting slide plate 16, so that the abutting slide plate 16 is always in contact with the profile of the first drive cam 14.

[0030] In specific implementation, the second servo motor 13 is started to drive the first drive cam 14 to rotate counterclockwise around its own axis. Then the first drive cam 14 can abut against the sliding plate 16, causing the connecting column 17 and the connecting plate 19 to slide, so that the connecting rack 20 drives the mounting gear 21 to rotate. During the rotation of the first drive cam 14, when the radius of the first drive cam 14 profile decreases, the first return spring 18 generates tension through elastic deformation.

[0031] See Figure 8 The outer periphery of the first drive cam 14 is divided into three segments along its counterclockwise rotation direction: the entry segment 14a, the constant speed segment 14b, and the exit segment 14c. The three segments transition smoothly. The entry segment 14a is a cosine acceleration curve, corresponding to the slow entry stage of the cutting wire 5, which is used to reduce the initial impact of cutting. The constant speed segment 14b is an Archimedean spiral, corresponding to the fast middle stage of the cutting wire 5, which is used to improve cutting efficiency. The exit segment 14c is a cosine acceleration curve symmetrical to the entry segment 14a, corresponding to the slow exit stage of the cutting wire 5, which is used to prevent cracking at the cut end of the block. When the first drive cam 14 rotates to the cutting section 14c, the minimum lift of the cutting section 14c is less than the initial contact radius of the contact plate 16. Under the action of the elastic restoring force of the first return spring 18, the contact plate 16 moves back synchronously with the profile of the cutting section 14c.

[0032] In specific implementation, when the second servo motor 13 drives the first drive cam 14 to rotate counterclockwise, the cutting section 14a first contacts the contact plate 16. Since the cutting section is a cosine acceleration curve, its profile radius gradually increases with the rate of change of the rotation angle, pushing the contact plate 16 to make an accelerating motion with decreasing acceleration in the horizontal direction. This motion is transmitted to the connecting rack 20 through the connecting column 17 and the connecting plate 19, so that the connecting rack 20 slides at a gradually accelerating but generally smooth speed, thereby driving the drive gear 9 and the driven rack 10 to move slowly, and finally realizing the slow reciprocating motion of the cutting wire 5 in the cutting stage, avoiding the concrete surface aggregate from collapsing due to impact. When the first drive cam 14 rotates to the uniform speed section 14b, the profile of this section is an Archimedean spiral, and its radius increases linearly with the rotation angle. During this process, the uniform speed section 14b of the cam pushes the contact slide plate 16 to move at a uniform speed in the horizontal direction, which drives the connecting column 17, the connecting plate 19 and the connecting rack 20 to slide at a uniform speed. The connecting rack 20 meshes with the drive mounting gear 21 and the drive gear 9 at a uniform speed, so that the driven rack 10 drives the arc block 11 to slide at a uniform speed. Through the transmission component, the moving frame 4 and the cutting wire 5 are driven to reciprocate at high speed, which corresponds to the middle fast stage of cutting, improves the cutting efficiency and reduces the friction time between the cutting wire 5 and the aggregate. When the first drive cam 14 rotates to the cutting section 14c, its profile is a cosine acceleration curve symmetrical to the cutting section 14a, and its radius gradually decreases with the rotation angle. When the profile radius is smaller than the initial contact radius of the contact plate 16, the first drive cam 14 disengages from the contact plate 16. At this time, the first return spring 18 releases its preload and generates an elastic restoring force, pulling the contact plate 16 back along the original path. Since the descent law of the cutting section 14c is symmetrical to the rise law of the cutting section 14a, the contact plate 16 undergoes a decelerating motion with decreasing acceleration under the pull of the spring, driving the connecting rack 20 to slowly move back, so that the cutting wire 5 completes the penetration action at a gradually decreasing speed, avoiding tearing of the remaining connection part of the concrete.

[0033] See Figure 9It also includes a delay component disposed between the connecting rack 20 and the frame 2. The delay component includes a first fixing seat 23 fixed on the upper surface of the connecting rack 20, a connecting tooth block 22 disposed at one end of the connecting rack 20, a second fixing seat 24 fixed on the upper surface of the connecting tooth block 22, a connecting rod 25 horizontally inserted in the second fixing seat 24 and fixed at one end to the first fixing seat 23, a second return spring 26 sleeved on the outside of the connecting rod 25, and a second fixing plate 27 fixed at the end of the connecting rod 25 away from the first fixing seat 23. One end of the second return spring 26 is fixedly connected to the first fixing seat 23 and the other end is fixedly connected to the second fixing seat 24. It is used to delay the return speed of the connecting rack 20 through elastic deformation, thereby extending the contact time between the uniform speed section 14b of the first drive cam 14 and the contact plate 16, ensuring that the middle section of the cutting wire 5 meets the requirements of blocks of different thicknesses for rapid cutting.

[0034] In specific implementation, the second return spring 26 is in a slightly pre-tightened state in the initial state. When the connecting rack 20 completes the pushing stroke under the drive of the first drive cam 14 and enters the return stroke, the connecting rack 20 drives the first fixed seat 23 to move closer to the second fixed seat 24, compressing the second return spring 26. The second return spring 26 generates an elastic reaction force due to compression, which forms resistance to the return movement of the first fixed seat 23 and the connecting rack 20, delaying the return speed of the connecting rack 20. The delayed return speed of the connecting rack 20 extends the meshing transmission time with the mounting gear 21, thereby extending the contact time between the constant speed section 14b of the first drive cam 14 and the contact plate 16. This setting extends the original contact time of the constant speed section 14b of the cam pushing the contact plate 16, thereby correspondingly extending the duration of the middle rapid stage of the cutting wire 5, meeting the requirement of longer rapid cutting time for thick concrete blocks.

[0035] See Figure 8 A second drive cam 28 is arranged parallel to one side of the first drive cam 14. The second drive cam 28 and the first drive cam 14 are coaxially sleeved on the drive end of the second servo motor 13, and their opposing surfaces are in close contact. Both the first drive cam 14 and the second drive cam 28 are provided with concentric arc-shaped adjustment grooves. A limiting bolt 29 for limiting the relative position of the first drive cam 14 and the second drive cam 28 is inserted in the arc-shaped adjustment groove. The end of the limiting bolt 29 is threaded with an anti-loosening nut to adapt to the cutting speed adjustment requirements of blocks of different thicknesses.

[0036] In practice, when it is necessary to adapt to blocks of different thicknesses: loosen the anti-loosening nut, push the second drive cam 28 to rotate around the motor drive end, and adjust its relative angle with the first drive cam 14; Since the first drive cam 14 and the second drive cam 28 have the same profile structure, after the relative angle is adjusted, the profiles of their uniform speed segments 14b will partially or completely overlap: if the overlap area of ​​the uniform speed segments 14b of the two cams increases, the total duration of the uniform speed segment 14b will be extended to adapt to thick blocks; if the overlap area decreases, the total duration of the uniform speed segment 14b will be shortened to adapt to thin blocks. After adjusting to the target relative position, the anti-loosening nut is tightened, and the relative position of the two cams is fixed by the friction between the nut and the second drive cam 28 to avoid position displacement caused by vibration during the cutting process.

[0037] See Figure 6 The transmission assembly includes a synchronous wheel 30 rotatably connected to the side of the mounting plate 6. The rim of the synchronous wheel 30 cooperates with a circular drive ring composed of multiple arc-shaped blocks 11. A synchronous belt 33, made of elastic material, is connected between the synchronous wheel 30 and the drive ring. A connecting strip 31 is hinged at one end to the eccentric position of the synchronous wheel 30. A transmission strip 32 is hinged at one end to the connecting strip 31 away from the synchronous wheel 30. The other end of the transmission strip 32 is hinged to one side of the outer wall of the moving frame 4. When the synchronous wheel 30 rotates, the moving frame 4 is driven to slide horizontally back and forth along the lifting frame 3 through the cooperation of the connecting strip 31 and the transmission strip 32.

[0038] It should be noted that the timing belt 33 in this application is preferably made of polyurethane, and the outer surfaces of the timing pulley 30 and the arc block 11 are provided with anti-slip textures to facilitate transmission.

[0039] In specific implementation, when the driven rack 10 slides along the strip groove of the mounting frame 7, the arc-shaped block 11 fixed at the end of the driven rack 10 moves synchronously with the rack in a direction away from the center of the mounting frame 7. At this time, multiple arc-shaped blocks 11 expand in coordination, so that the actual pitch circle radius of the circular drive ring gradually increases. Then the circular drive ring transmits power to the synchronous wheel 30. Subsequently, the synchronous wheel 30 drives the connecting bar 31 to rotate, and the connecting bar 31 drives the transmission bar 32 to rotate. When the connecting bar 31 pushes the transmission bar 32, the transmission bar 32 drives the moving frame 4 to slide along the slide rail of the lifting frame 3 in a direction away from the mounting plate 6. When the connecting bar 31 pulls the transmission bar 32, the transmission bar 32 drives the moving frame 4 to slide along the slide rail in a direction closer to the mounting plate 6, and finally realizes the horizontal reciprocating cutting motion of the cutting wire 5.

[0040] See Figure 11The inner side of the movable frame 4 is also provided with an adjustment mechanism for adjusting the distance between the cutting wires 5. The adjustment mechanism includes multiple tensioning wheels 37 that are rotatably arranged along the width direction of the movable frame 4. The wheel surface of each tensioning wheel 37 abuts against the outer wall of the cutting wire 5. An installation rod 34 is rotatably connected inside the movable frame 4. Multiple sets of grooves are opened on the installation rod 34. Each set of grooves is provided with two threaded grooves 35, and the thread directions of the two threaded grooves 35 are opposite. A transmission nut 36 is connected to one side of the tensioning wheel 37. The transmission nut 36 is threadedly connected to the threaded groove 35. A first drive motor 38 that drives the installation rod 34 to rotate is connected to one side of the movable frame 4.

[0041] In practice, the first drive motor 38 is started, which can drive the mounting rod 34 to rotate forward or backward around its own axis. When the mounting rod 34 rotates forward, the two reverse threaded grooves 35 in each set of grooves drive the corresponding two transmission nuts 36 to move towards each other. The transmission nuts 36 drive the tensioning wheel 37 to move towards each other synchronously, thereby pulling the cutting wire 5 and reducing the distance between adjacent cutting wires 5. When the mounting rod 34 rotates backward, the two reverse threaded grooves 35 drive the two transmission nuts 36 to move away from each other. The transmission nuts 36 drive the tensioning wheel 37 to move away from each other synchronously, thereby pushing the cutting wire 5 and increasing the distance between adjacent cutting wires 5.

[0042] See Figures 1 to 3 The lifting assembly also includes a transmission screw 39 rotatably connected in the frame 2, a lifting frame 3 threadedly connected to the transmission screw 39, and a second drive motor 40 connected to the frame 2 to drive the transmission screw 39 to rotate.

[0043] In practice, when it is necessary to move the lifting frame 3 downward, the second drive motor 40 is started to rotate forward, driving the transmission screw 39 to rotate forward, and the lifting frame 3 is moved downward in the vertical direction through the ball screw engagement.

[0044] Working principle: Based on the thickness and hardness of the concrete block to be cut, adjust the relative positions of the first drive cam 14 and the second drive cam 28. During adjustment, loosen the anti-loosening nut and push the second drive cam 28 to rotate around the drive end of the second servo motor 13, so that the overlap area of ​​the uniform speed section 14b of the two cams is adapted to the requirements. The overlap area is increased for thick blocks and decreased for thin blocks. After adjustment, tighten the anti-loosening nut. If it is necessary to adjust the spacing of the cutting wires 5, start the first drive motor 38 and drive the mounting rod 34 to rotate. Through the reverse thread groove 35 and the transmission nut 36, the tensioning wheel 37 is driven to move towards or away from each other, and the spacing of the cutting wires 5 is adjusted to the target size. Start the conveyor mechanism 1 to smoothly transport the concrete block to be cut to the cutting position directly below the frame 2; The second drive motor 40 is started to rotate forward. Its drive end drives the transmission screw 39 to rotate at a constant speed through the coupling, so that the lifting frame 3 moves downward in the vertical direction, and drives the moving frame 4 below and multiple cutting wires 5 to gradually approach the upper surface of the block. When the cutting wires 5 are a certain distance away from the surface of the block, the second drive motor 40 stops. The first servo motor 12 is started, its drive end passing through the mounting plate 6 and driving the circular mounting frame 7 to rotate. Simultaneously, the second servo motor 13 is started, driving the first drive cam 14 to rotate counterclockwise. The cutting section 14a first contacts the contact slide plate 16. Since the radius of the cutting section 14a gradually increases with the rotation angle, the cam pushes the contact slide plate 16 in a horizontally accelerating motion with decreasing acceleration. This motion is transmitted to the connecting plate 19 through the connecting column 17, which in turn drives the connecting rack 20 to slowly slide along the mounting frame 7. Slow sliding, the connecting rack 20 engages with the drive mounting gear 21, driving the coaxial drive gear 9 to finely adjust the speed, so that the expansion speed of the arc block 11 driven by the driven rack 10 is more gradual. The circular drive ring drives the synchronous wheel 30 to rotate at low speed through the elastic synchronous belt 33. The eccentric point of the synchronous wheel 30 pushes and pulls the transmission bar 32 through the connecting bar 31, so that the moving frame 4 drives the cutting wire 5 to slowly reciprocate and slowly cut into the surface of the block. At this stage, because the cutting speed is low, it effectively avoids the aggregate on the concrete surface from collapsing due to the initial impact, forming a flat initial cut. The first drive cam 14 continues to rotate, entering the uniform speed section 14b. The radius of the profile in this section increases linearly with the rotation angle, pushing the contact slide plate 16 to move at a uniform speed in the horizontal direction. The connecting column 17, connecting plate 19, and connecting rack 20 slide synchronously at a uniform speed, and the meshing mounting gear 21 drives the drive gear 9 to rotate at a uniform speed. At this time, the driven rack 10 drives the arc block 11 to expand outward rapidly, and the pitch circle radius of the circular drive ring increases. According to the transmission characteristics of the synchronous belt 33, the radius of the drive ring increases and the driving force of the first servo motor 12 remains constant. The angular velocity of the synchronous pulley 30 increases proportionally, which drives the reciprocating frequency of the moving frame 4 and the cutting wire 5 to increase. The high-speed reciprocating cutting wire 5 quickly cuts into the interior of the block, reducing the friction time with the dense aggregate, reducing the risk of wire overheating and wear, and improving cutting efficiency. When the connecting rack 20 completes the pushing stroke and enters the reset stroke, the connecting rack 20 drives the first fixed seat 23 to move towards the second fixed seat 24, compressing the second reset spring 26. The elastic reaction force generated by the second reset spring 26 forms resistance to the connecting rack 20, delaying the reset speed of the connecting rack 20. Because the reset is delayed, it can be ensured that the thick block can be cut quickly and fully, avoiding the situation where the concrete is not cut through. The first drive cam 14 rotates to the cutting section 14c, and the profile radius gradually decreases with the rotation angle. When the minimum lift of the profile is less than the initial contact radius of the contact plate 16, the first drive cam 14 disengages from the contact plate 16. At this time, the first return spring 18 releases the preload and generates an elastic restoring force to pull the contact plate 16 back along the original path. The return movement of the contact plate 16 is transmitted to the connecting rack 20 through the connecting column 17 and the connecting plate 19, causing the connecting rack 20 to slide slowly in the opposite direction. The meshing mounting gear 21 drives the drive gear 9 to decelerate and rotate. The driven rack 10 drives the arc block 11 to slowly contract. The radius of the circular drive ring decreases, the angular velocity of the synchronous wheel 30 decreases, and the reciprocating frequency of the cutting wire 5 decreases. The slowly reciprocating cutting wire 5 gradually penetrates the remaining connecting part of the block, avoiding tearing at the end of the block due to high-speed cutting, forming a flat cut, and reducing subsequent grinding processes.

Claims

1. An energy-saving concrete block production equipment, characterized in that, include, Conveying mechanism for carrying and transporting concrete blocks (1); A frame (2) is mounted directly above the conveying mechanism (1), and the frame (2) has a frame structure; A lifting assembly is mounted vertically on the inner side of the frame (2). The lifting assembly is slidably provided with a moving frame (4) in the horizontal direction. Multiple cutting wires (5) for cutting blocks are spaced apart on the inner side of the moving frame (4) along the length direction. A drive unit is provided on one side of the lifting assembly. The drive unit includes a transmission assembly for transmitting power and a speed adjustment assembly for controlling the reciprocating speed of the cutting wire (5). The speed adjustment component drives the moving frame (4) to slide back and forth in the horizontal direction through the transmission component, and enables the reciprocating speed of the cutting wire (5) to change in stages: slow entry, fast middle section, and slow exit, so as to adapt to the cutting requirements of concrete blocks.

2. The energy-saving concrete block production equipment as described in claim 1, characterized in that: The lifting assembly includes a rectangular frame-shaped lifting frame (3), the moving frame (4) is horizontally slidably disposed inside the lifting frame (3), the driving component is fixed to one side of the outer wall of the lifting frame (3) by a horizontally disposed mounting plate (6), and the transmission component and the speed adjustment component are both disposed on the same side of the mounting plate (6). The speed regulation component includes, Rotate the circular mounting frame (7) mounted on the side of the mounting plate (6), the axis of the mounting frame (7) being perpendicular to the mounting plate (6); The annular transmission gear ring (8) is coaxially rotated and assembled inside the mounting frame (7); Multiple drive gears (9) are evenly spaced along the circumference of the mounting frame (7). Each drive gear (9) is rotatably mounted inside the mounting frame (7) and meshes with the transmission gear ring (8). A driven rack (10) meshes with each of the drive gears (9). The outer side wall of the mounting frame (7) is provided with a strip-shaped groove adapted to the driven rack (10). The driven rack (10) slides along the strip-shaped groove, and one end of it extends to the outside of the mounting frame (7) and is connected to an arc-shaped block (11). A first servo motor (12) is fixed on the side of the mounting plate (6) away from the mounting frame (7). The drive end of the first servo motor (12) passes through the mounting plate (6) and is fixedly connected to the mounting frame (7). It is used to drive the mounting frame (7) to drive the arc block (11) to rotate synchronously.

3. The energy-saving concrete block production equipment as described in claim 2, characterized in that: The speed regulation component includes a cam drive unit for controlling the rotational speed of the drive gear (9), the cam drive unit including, A mounting gear (21) is fixed coaxially with one of the drive gears (9), and the mounting gear (21) is located outside the mounting frame (7); A connecting rack (20) meshes with the mounting gear (21), and the outer wall of the mounting frame (7) is fixed with a slide rail for supporting the connecting rack (20), and the connecting rack (20) slides along the slide rail; A cam drive structure for driving the sliding of the connecting rack (20) is provided, wherein the cam drive structure is driven to cooperate with one end of the connecting rack (20) so as to drive the mounting gear (21) to rotate synchronously through the connecting rack (20), thereby adjusting the speed of the drive gear (9).

4. The energy-saving concrete block production equipment as described in claim 3, characterized in that: The cam drive structure includes, A second servo motor (13) is fixed to the outer wall of the mounting frame (7); The first drive cam (14) is fixed at the drive end of the second servo motor (13). A first fixing plate (15) is fixed to the outer wall of the mounting frame (7), and a connecting column (17) is slidably passed through the first fixing plate (15) in the horizontal direction. A contact plate (16) is fixed to one end of the connecting column (17), and the contact plate (16) abuts against the outer periphery of the first drive cam (14); A connecting plate (19) is fixed at the other end of the connecting post (17), and the side of the connecting plate (19) away from the connecting post (17) is fixedly connected to one end of the connecting rack (20); A first return spring (18) is sleeved on the outside of the connecting column (17). One end of the first return spring (18) is fixedly connected to the first fixing plate (15), and the other end is fixedly connected to the abutting slide plate (16) to ensure that the abutting slide plate (16) always fits against the profile of the first drive cam (14).

5. The energy-saving concrete block production equipment as described in claim 4, characterized in that: The outer periphery of the first driving cam (14) is divided into an entry segment (14a), a constant speed segment (14b), and an exit segment (14c) along its counterclockwise rotation direction, and the three segments transition smoothly. The cutting section (14a) is a cosine acceleration curve, corresponding to the cutting deceleration stage of the cutting wire (5), which is used to reduce the initial impact of cutting; The uniform speed section (14b) is an Archimedean spiral, corresponding to the middle rapid stage of the cutting wire (5), which is used to improve cutting efficiency; The cut-out section (14c) is a cosine acceleration curve symmetrical to the cut-in section (14a), corresponding to the cutting deceleration stage of the cutting wire (5), which is used to avoid cracking at the cut-out end of the block; When the first drive cam (14) rotates to the cut-out section (14c), the minimum lift of the cut-out section (14c) is less than the initial contact radius of the contact plate (16), and the contact plate (16) moves back synchronously with the profile of the cut-out section (14c) under the action of the elastic restoring force of the first return spring (18).

6. The energy-saving concrete block production equipment as described in claim 4, characterized in that: It also includes a delay assembly disposed between the connecting rack (20) and the frame (2). The delay assembly includes a first fixing seat (23) fixed on the upper surface of the connecting rack (20), a connecting tooth block (22) disposed at one end of the connecting rack (20), a second fixing seat (24) fixed on the upper surface of the connecting tooth block (22), a connecting rod (25) horizontally inserted in the second fixing seat (24) and fixed at one end on the first fixing seat (23), a second return spring (26) sleeved on the outside of the connecting rod (25), and a second fixing plate (27) fixed at the end of the connecting rod (25) away from the first fixing seat (23). One end of the second reset spring (26) is fixedly connected to the first fixed seat (23), and the other end is fixedly connected to the second fixed seat (24). It is used to delay the reset speed of the connecting rack (20) through elastic deformation, thereby extending the contact time between the uniform speed section (14b) of the first drive cam (14) and the contact plate (16), and ensuring that the middle section of the cutting wire (5) meets the requirements of blocks of different thicknesses for rapid cutting.

7. The energy-saving concrete block production equipment as described in claim 5, characterized in that: A second drive cam (28) is arranged parallel to one side of the first drive cam (14). The second drive cam (28) and the first drive cam (14) are coaxially sleeved on the drive end of the second servo motor (13), and their opposing surfaces are in close contact. Both the first drive cam (14) and the second drive cam (28) are provided with concentric arc-shaped adjustment grooves. A limiting bolt (29) for limiting the relative position of the first drive cam (14) and the second drive cam (28) is inserted in the arc-shaped adjustment groove. The end of the limiting bolt (29) is threaded with an anti-loosening nut to adapt to the cutting speed adjustment requirements of blocks of different thicknesses.

8. The energy-saving concrete block production equipment as described in claim 2, characterized in that: The transmission assembly includes, A synchronous wheel (30) is rotatably connected to the side of the mounting plate (6). The rim of the synchronous wheel (30) cooperates with a circular drive ring composed of multiple arc blocks (11). A synchronous belt (33) is connected between the (30) and the drive ring. The synchronous belt (33) is made of elastic material. A connecting strip (31) with one end hinged to the eccentric position of the synchronous pulley (30); A transmission bar (32) with one end hinged to the connecting bar (31) away from the synchronous wheel (30), and the other end of the transmission bar (32) hinged to one side of the outer wall of the moving frame (4); When the synchronous wheel (30) rotates, the moving frame (4) is driven to slide horizontally back and forth along the lifting frame (3) through the cooperation of the connecting bar (31) and the transmission bar (32).

9. The energy-saving concrete block production equipment as described in claim 1, characterized in that: The inner side of the movable frame (4) is also provided with an adjustment mechanism for adjusting the distance between the cutting wires (5), the adjustment mechanism including, Multiple tensioning wheels (37) are rotatably arranged at intervals along the width direction of the moving frame (4). The wheel surface of each tensioning wheel (37) abuts against the outer wall of the cutting wire (5). An installation rod (34) is rotatably connected inside the moving frame (4). Multiple sets of grooves are opened on the installation rod (34). Each set of grooves is provided with two threaded grooves (35), and the thread directions of the two threaded grooves (35) are opposite. A transmission nut (36) is connected to one side of the tensioning wheel (37). The transmission nut (36) is threadedly connected to the threaded groove (35). A first drive motor (38) that drives the installation rod (34) to rotate is connected to one side of the moving frame (4).

10. The energy-saving concrete block production equipment as described in claim 2, characterized in that: The lifting assembly also includes, A transmission screw (39) is rotatably connected in the frame (2), and the lifting frame (3) is threadedly connected to the transmission screw (39). A second drive motor (40) that drives the transmission screw (39) to rotate is connected to the frame (2).

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