A calender

Abstract

The application relates to a calender, which comprises a calender body, a cutter shaft, a cutting motor and two cutting assemblies, the cutter shaft is rotationally connected to the calender body, the cutting motor is used for driving the cutter shaft to rotate, the two cutting assemblies are both installed to the cutter shaft, the cutting assembly comprises a first shaft sleeve and a blade, four clamping grooves are arranged on the side wall of the cutter shaft, the four clamping grooves extend along the length direction of the cutter shaft, the four clamping grooves are uniformly distributed along the axis of the cutter shaft in a circumferential direction, the cross section of the cutter shaft is a closed figure with straight line segments and arc line segments alternately distributed, a locking assembly is arranged on the first shaft sleeve, the locking assembly comprises four locking plates and a driving piece, the four locking plates correspond to the four clamping grooves, the driving piece is used for driving the four locking plates to simultaneously approach or move away from the corresponding clamping grooves, and the blade is installed to the first shaft sleeve. The application has the effect that the first shaft sleeve and the cutter shaft are on the same axis after installation.

Description

Technical Field

[0001] This application relates to the field of calenders, and more particularly to a calender. Background Technology

[0002] Calenders are core equipment in the processing of polymer materials such as rubber, plastics, films, and membranes. They mainly use one or more pairs of relatively rotating pressure rollers to apply pressure, shear force, and temperature to the material, continuously pressing the material from block, granular, or sheet blanks into thin sheets of uniform thickness and smooth surface, or to achieve processing functions such as bonding and embossing of materials.

[0003] Currently, Chinese utility model patent CN222451101U discloses a calender, including side plates spaced apart on both sides; an upper pressure roller and a lower pressure roller rotatably connected between the two side plates and distributed vertically; a cutting mechanism disposed on the two side plates, the cutting mechanism including a cutting shaft and two circular cutters; the two ends of the cutting shaft are rotatably connected to the two side plates, and the cutting shaft is located in front of the lower pressure roller; the circular cutter includes a first bushing and a circular blade fixed to the outer circumference of the first bushing; the two circular cutters are symmetrically sleeved on the cutting shaft through their respective first bushings; radial holes are spaced apart on the first bushing, and screws are inserted into the radial holes to lock the circular cutters on the cutting shaft; this application has the effect of improving work efficiency and simplifying the workflow.

[0004] There is a gap between the first bushing and the cutter shaft. Therefore, the first bushing is pressed against the cutter shaft by screws. However, the screws are only tightened manually, which lacks precise positioning and cannot ensure that the cutter shaft and the first bushing are coaxial. During the high-speed assembly of the cutter, radial runout will occur, and it cannot be ensured that the material edge is completely cut off. Utility Model Content

[0005] In order to ensure that the first bushing and the cutter shaft are on the same axis after installation, this application provides a calender.

[0006] This application provides a calendering machine, which adopts the following technical solution: A calender includes a calender body, a cutter shaft, a cutting motor, and two cutting assemblies. The cutter shaft is rotatably connected to the calender body. The cutting motor drives the cutter shaft to rotate. Both cutting assemblies are mounted on the cutter shaft. Each cutting assembly includes a first bushing and a blade. The side wall of the cutter shaft has four locking slots extending along the length of the cutter shaft and evenly distributed circumferentially along its axis. The cross-section of the cutter shaft is a closed shape composed of alternating straight and curved segments. A locking assembly is provided on the first bushing. The locking assembly includes four locking plates and a driving component. The four locking plates correspond to the four locking slots. The driving component drives the four locking plates to simultaneously move closer to or away from the corresponding locking slots. The blade is mounted on the first bushing.

[0007] By adopting the above technical solution, the four circumferentially evenly distributed snap-fit ​​grooves on the cutting shaft, together with the locking components of the four locking plates and the drive component on the first bushing, achieve multi-point synchronous engagement of the four locking plates into the snap-fit ​​grooves, forcibly constrain the relative positions of the two, ensure precise coaxiality, and eliminate radial runout; at the same time, it simplifies operation, reduces manual labor intensity, enables quick assembly and disassembly of the first bushing, has stronger adaptability, and ultimately ensures complete cutting of material edges, improving product processing accuracy.

[0008] Optionally, the four locking plates are divided into two groups of locking plates. The two locking plates in the locking plate group are perpendicular to each other and fixedly connected. The driving component includes a bidirectional screw and two mounting plates. The two mounting plates correspond to the two locking plate groups and are set on the locking plates. The length direction of the bidirectional screw is parallel to the distribution direction of the two locking plate groups. The bidirectional screw is rotatably connected to the cutter shaft. The two mounting plates are threadedly connected to the threaded sections of the bidirectional screw with opposite directions of rotation.

[0009] By adopting the above technical solution, the four locking plates are divided into two groups, and the two locking plates in each group are vertically fixed together. The driving component adopts a bidirectional screw and a corresponding mounting plate. The bidirectional screw drives the two groups of locking plates to move synchronously through the opposite screw threads. This design makes the locking plate group form a rigid structure, disperses the force and prevents deformation, and improves the stability and load-bearing capacity of the locking structure. The screw drive is easy to operate and can make a small adjustment to the locking plate insertion depth to avoid damage or loosening of the components, and further ensures the coaxial positioning accuracy.

[0010] Optionally, a reinforcing rib is provided between two locking plates in the same locking plate group.

[0011] By adopting the above technical solution, reinforcing ribs are set between the locking plates in the same group to fill the gaps between the plates and form a reinforced structure, which greatly improves the locking plate group's resistance to bending and torsional deformation, avoids locking failure due to deformation under force when the cutter rotates at high speed, reduces fatigue damage, extends the service life of the components, and reduces maintenance costs.

[0012] Optionally, the snap-fit ​​groove has graduations distributed along the extension direction of the snap-fit ​​groove.

[0013] By adopting the above technical solution, the extension direction scale is set in the snap-fit ​​groove to provide a quantitative reference for the installation position of the first bushing. Operators can accurately adjust the distance between the two cutting components according to the material width requirements, replacing experience-based operation, avoiding positioning deviation and material waste, ensuring consistent size of batch products, while reducing the operation threshold, shortening the debugging time, and improving production efficiency.

[0014] Optionally, the first bushing is provided with a mounting component for mounting the blade. The mounting component includes a mounting ring, a plurality of positioning shafts, and a plurality of positioning nuts. The mounting ring corresponds to the first bushing. The plurality of positioning shafts are distributed circumferentially along the axis of the mounting ring. The length direction of the positioning shafts is parallel to the axis of the mounting ring. One end of the positioning shaft is disposed on the mounting ring. The blade is provided with a plurality of through holes for the positioning shafts to pass through. The positioning nuts are used for threaded connection to the free end of the positioning shafts.

[0015] By adopting the above technical solution, the mounting components of the mounting ring, positioning shaft, and positioning nut are used. The multiple positioning shafts are distributed circumferentially so that the blade is inserted through the through hole and fixed by the nut, which prevents the blade from shifting or rotating, ensures that the blade is coaxial with the first shaft sleeve, and improves the cutting accuracy. At the same time, it simplifies the installation and removal of the blade, facilitates maintenance, and is compatible with different specifications of blades, thus improving the equipment's adaptability.

[0016] Optionally, the mounting component further includes a limiting ring located on the side of the blade away from the mounting ring. The limiting ring has several mating holes for the positioning shaft to pass through. The limiting ring abuts against the side of the blade away from the mounting ring, and the positioning nut abuts against the side wall of the limiting ring away from the blade.

[0017] By adopting the above technical solution, the blade is clamped in both directions by the mounting ring and the limiting ring, which increases the contact area with the blade, disperses the clamping force to prevent blade deformation and damage, reduces direct friction between the nut and the blade, absorbs vibration energy, extends the service life of the blade, and further ensures the stability of the blade fixation.

[0018] Optionally, the mounting ring is provided with heat dissipation fins.

[0019] By adopting the above technical solution, heat dissipation fins are installed around the mounting ring to increase the heat dissipation area. The heat generated by the blade cutting is quickly dissipated through air convection, which prevents the blade from deforming or softening due to high temperature, maintains its mechanical properties and cutting efficiency, adapts to high-speed and long-term cutting scenarios, and ensures continuous operation of the equipment.

[0020] Optionally, the cutter shaft includes two mounting shafts and a plug-in shaft, with two cutting components corresponding to the two mounting shafts. A snap-fit ​​groove is formed on the mounting shaft, and the plug-in shaft is located between the two mounting shafts. The mounting shaft has a mating groove in the radial direction, and both ends of the plug-in shaft are respectively inserted into the mating groove of the mounting shaft.

[0021] By adopting the above technical solution, the cutter shaft is split into two mounting shafts and a connector shaft. The mounting shafts are equipped with mating grooves for the connector shafts to insert into. The split structure allows for easy separation of the two mounting shafts, making it convenient to remove the first bushing fitted on the mounting shaft. When the blade needs to be replaced, there is no need for complex disassembly of the entire cutter shaft; the operation can be performed quickly simply by splitting the cutter shaft, greatly simplifying the blade replacement process and improving maintenance convenience.

[0022] In summary, this application includes at least one of the following beneficial technical effects: By synchronously engaging the four locking slots of the cutter shaft with the four locking plates of the first shaft sleeve, coaxiality is forcibly ensured; at the same time, the structure of the locking assembly is optimized to ensure synchronous movement of the locking plate assembly, further improving coaxial accuracy; ultimately ensuring stable blade cutting trajectory, complete cutting of material edges, and improved product processing accuracy. The detachable blades allow for timely replacement of damaged blades by staff. The plug-in shaft eliminates the need to remove the entire cutting shaft, greatly speeding up adjustment time and improving work efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a calender.

[0024] Figure 2 yes Figure 1 A schematic diagram of the structure of the middle cutting shaft.

[0025] Figure 3 yes Figure 2 A sectional view of the first bushing.

[0026] Figure 4 yes Figure 2 A schematic diagram of the mounting structure of the medium blade.

[0027] Reference numerals: 1. Calender body; 2. Cutting shaft; 21. Mounting shaft; 211. Mating groove; 212. Snap-fit ​​groove; 213. Scale; 22. Insertion shaft; 221. Mating block; 3. Cutting motor; 4. Cutting assembly; 41. First bushing; 411. Cavity; 42. Blade; 421. Through hole; 5. Locking assembly; 51. Locking plate; 511. Reinforcing rib; 52. Drive component; 521. Bidirectional screw; 522. Mounting plate; 6. Mounting component; 61. Mounting ring; 62. Positioning shaft; 63. Positioning nut; 64. Limiting ring; 641. Mating hole; 7. Heat dissipation fins. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a calendering machine. (Refer to...) Figure 1 A calender includes a calender body 1, a cutter shaft 2, a cutting motor 3, and two cutting components 4. The cutter shaft 2 is rotatably connected to the calender body 1, and the cutting motor 3 is fixedly mounted on the calender body 1. The cutting motor 3 is used to drive the cutter shaft 2 to rotate. The two cutting components 4 are distributed along the length direction of the cutter shaft 2 and are mounted on the cutter shaft 2. The cutting components 4 are used to cut materials.

[0030] refer to Figure 1 and Figure 2 The cutting shaft 2 includes two mounting shafts 21 and a connecting shaft 22. The connecting shaft 22 is located between the two mounting shafts 21. The mounting shafts 21 are parallel to the width direction of the material. The mounting shafts 21 and the connecting shaft 22 are coaxially arranged. Both mounting shafts 21 are rotatably connected to the calender body 1. The cutting motor 3 drives one of the mounting shafts 21 to rotate. A mating groove 211 is provided on the side wall of the mounting shaft 21, and the mating groove 211 extends radially along the mounting shaft 21. The two ends of the connecting shaft 22 are provided with mating blocks 221, which are engaged in the mating groove 211. The mounting shaft 21 has... There are four snap-fit ​​grooves 212, which extend along the length of the mounting shaft 21. The bottom of the snap-fit ​​grooves 212 is provided with scales 213, which are distributed along the extension direction of the snap-fit ​​grooves 212. The four snap-fit ​​grooves 212 are evenly distributed circumferentially along the axis of the mounting shaft 21. The cross-section of the cutter shaft 2 is a closed shape formed by alternating straight segments and arc segments. Two cutting components 4 correspond to two mounting shafts 21. The cutting components 4 include a first bushing 41 and a blade 42. The first bushing 41 corresponds to the mounting shaft 21 and is sleeved on the mounting shaft 21.

[0031] refer to Figure 2 and Figure 3A locking assembly 5 is provided on the first bushing 41. The locking assembly 5 includes four locking plates 51 and a driving component 52. A cavity 411 is opened inside the first bushing 41, and the four locking plates 51 are located in the cavity 411. The four locking plates 51 correspond to four snap-fit ​​grooves 212. Each of the four locking plates 51 is divided into two locking plate groups. The two locking plates 51 in the locking plate group are perpendicular to each other and fixedly connected. A reinforcing rib 511 is also provided between the two locking plates 51 in the locking plate group. The locking plates 51 are used to abut against the bottom wall of the corresponding snap-fit ​​groove 212. The moving part 52 includes a bidirectional screw 521 and two mounting plates 522. The two mounting plates 522 correspond to two locking plate groups. The mounting plates 522 are fixedly mounted on the locking plates 51 in the corresponding locking plate groups. The length direction of the bidirectional screw 521 is parallel to the distribution direction of the two locking plate groups. The bidirectional screw 521 is rotatably connected to the first bushing 41. The two locking plate groups are slidably connected to the first bushing 41 along the length direction of the bidirectional screw 521. The two mounting plates 522 are respectively threaded to the threaded sections of the bidirectional screw 521 with opposite rotation directions.

[0032] refer to Figure 2 and Figure 4 The first bushing 41 is provided with a mounting component 6 for mounting the blade 42. The mounting component 6 includes a mounting ring 61, a plurality of positioning shafts 62, a plurality of positioning nuts 63, and a limiting ring 64. The mounting ring 61 is coaxially arranged with the first bushing 41 and is fixedly mounted on the outer side wall of the first bushing 41. The plurality of positioning shafts 62 are evenly distributed circumferentially along the axis of the mounting ring 61, and the axis of the positioning shafts 62 is parallel to the axis of the mounting ring 61. The positioning shafts 62 are fixedly mounted on one end of the mounting ring 61. The blade 42 has a plurality of through holes 421, which correspond to the plurality of positioning shafts 62, and the through holes 421 allow the positioning shafts 62 to pass through. One end of the blade 42 abuts against the mounting ring 61. The limiting ring 64 is coaxially arranged with the mounting ring 61 and is located on the side of the blade 42 away from the mounting ring 61. The limiting ring 64 has several mating holes 641, which correspond to several positioning shafts 62. The mating holes 641 allow the positioning shafts 62 to pass through. The limiting ring 64 is used to abut against the side of the blade 42 away from the mounting ring 61. Several positioning nuts 63 correspond to several positioning shafts 62. The positioning nuts 63 are threaded onto the positioning shafts 62 and abut against the limiting ring 64. The mounting ring 61 is provided with heat dissipation fins 7 on the side away from the blade 42.

[0033] The implementation principle of a calender according to an embodiment of this application is as follows: When the calender is working, the cutting motor 3 is fixed to the calender body 1 and drives the cutting shaft 2 to rotate. The two cutting components 4 are correspondingly sleeved on the two mounting shafts 21 and rotate synchronously with the cutting shaft 2 to cut the material. Four circumferentially evenly distributed locking grooves 212 with scales 213 are opened on the mounting shaft 21. The cavity 411 of the first bushing 41 is provided with two sets of locking plates 51. Rotating the bidirectional screw 521 can drive the locking plate sets to synchronously approach the locking grooves 212 through the two threaded mounting plates 522, so that the locking plates 51 abut against the bottom of the locking grooves 212, forcing the first bushing 41 and the mounting shaft 21 to be precisely coaxial, avoiding radial runout. The scales 213 help to accurately adjust the distance between the two cutting components 4 to adapt to the width of the material. The blade 42 is fixed by the mounting part 6: the positioning shaft 62 is distributed around the mounting ring 61. The blade 42 is inserted into the positioning shaft 62 through the mating hole 641 and then abuts against the mounting ring 61. The limiting ring 64 is inserted into the positioning shaft 62 from the other side of the blade 42 and abuts against the blade 42. The blade 42 can be fixed by tightening the positioning nut 63. The heat dissipation fins 7 on the side of the mounting ring 61 away from the blade 42 can dissipate the heat generated by cutting in time, ensuring the performance of the blade 42 and the cutting effect.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A calender, characterized in that: The machine includes a calender body (1), a cutter shaft (2), a cutting motor (3), and two cutting assemblies (4). The cutter shaft (2) is rotatably connected to the calender body (1). The cutting motor (3) drives the cutter shaft (2) to rotate. Both cutting assemblies (4) are mounted on the cutter shaft (2). Each cutting assembly (4) includes a first bushing (41) and a blade (42). Four locking grooves (212) are provided on the side wall of the cutter shaft (2). The four locking grooves (212) extend along the length of the cutter shaft (2). The blades (42) are evenly distributed around the axis of the cutting shaft (2). The cross section of the cutting shaft (2) is a closed shape composed of alternating straight and arc segments. A locking component (5) is provided on the first bushing (41). The locking component (5) includes four locking plates (51) and a driving component (52). The four locking plates (51) correspond to four snap-fit ​​slots (212). The driving component (52) is used to drive the four locking plates (51) to move closer to or further away from the corresponding snap-fit ​​slots (212) at the same time. The blade (42) is installed on the first bushing (41).

2. A calender according to claim 1, characterized in that: The four locking plates (51) are divided into two groups of locking plates. The two locking plates (51) in the locking plate group are perpendicular to each other and fixedly connected. The driving component (52) includes a bidirectional screw (521) and two mounting plates (522). The two mounting plates (522) correspond to the two locking plate groups. The mounting plates (522) are set on the locking plates (51). The length direction of the bidirectional screw (521) is parallel to the distribution direction of the two locking plate groups. The bidirectional screw (521) is rotatably connected to the cutter shaft (2). The two mounting plates (522) are threadedly connected to the threaded sections of the bidirectional screw (521) with opposite rotation directions.

3. A calender according to claim 2, characterized in that: A reinforcing rib (511) is provided between the two locking plates (51) in the same locking plate group.

4. A calender according to claim 1, characterized in that: The snap-fit ​​groove (212) has scales (213) distributed along the extension direction of the snap-fit ​​groove (212).

5. A calender according to claim 1, characterized in that: The first bushing (41) is provided with a mounting component (6) for mounting the blade (42). The mounting component (6) includes a mounting ring (61), a plurality of positioning shafts (62) and a plurality of positioning nuts (63). The mounting ring (61) corresponds to the first bushing (41). The plurality of positioning shafts (62) are distributed circumferentially along the axis of the mounting ring (61). The length direction of the positioning shafts (62) is parallel to the axis of the mounting ring (61). One end of the positioning shaft (62) is set on the mounting ring (61). The blade (42) is provided with a plurality of through holes (421) for the positioning shafts (62) to pass through. The positioning nuts (63) are used to be threaded to the free end of the positioning shafts (62).

6. A calender according to claim 5, characterized in that: The mounting component (6) also includes a limiting ring (64), which is located on the side of the blade (42) away from the mounting ring (61). The limiting ring (64) has several mating holes (641) for the positioning shaft (62) to pass through. The limiting ring (64) abuts against the side of the blade (42) away from the mounting ring (61). The positioning nut (63) is used to abut against the side wall of the limiting ring (64) away from the blade (42).

7. A calender according to claim 5, characterized in that: The mounting ring (61) is provided with heat dissipation fins (7).

8. A calender according to claim 1, characterized in that: The cutting shaft (2) includes two mounting shafts (21) and a plug shaft (22). The two cutting components (4) correspond to the two mounting shafts (21). The snap-fit ​​groove (212) is opened on the mounting shaft (21). The plug shaft (22) is located between the two mounting shafts (21). The mounting shaft (21) has a mating groove (211) in the radial direction. The two ends of the plug shaft (22) are respectively inserted into the mating groove (211) of the mounting shaft (21).

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