Cutter replacing mechanism of film splitting machine

Abstract

The utility model discloses a film splitting machine cutter reloading mechanism relates to splitting machine technical field, including: splitting machine cutter structure and cutter reloading mechanism, the splitting machine cutter structure is composed of shaft body, respectively rotatingly connected with the bearing of shaft body both ends, and the locating shaft of shaft body left end fixed installation, and two plane grooves are symmetrically formed in the surface of the positioning shaft, and the cutter replacement mechanism comprises a first supporting sleeve and a second supporting sleeve which are fixedly installed on the two inner side walls of the splitting machine supporting frame through flange plates correspondingly. Compared with the prior art, the rapid locking and releasing device has the advantages that the C-shaped open groove structure allows the positioning shaft to be rapidly embedded into the open key groove in the sleeve, the C-shaped open groove structure is matched with the semicircular clamping plate driven by the air cylinder to achieve rapid locking and releasing of the cutting knife structure of the splitting machine, and the design that the annular positioning grooves are embedded in the semicircular clamping plate and the semicircular shaft sleeve is adopted; 360-degree wrapping type clamping of the bearing outer ring is achieved, and radial run-out of a cutter during high-speed rotation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of slitting machine technology, and in particular to a cutting tool changing mechanism for a film slitting machine. Background Technology

[0002] As a key piece of equipment for processing materials such as films and aluminum foils, the core function of slitting machines is to precisely slit wide substrates into multiple sets of narrow products to meet the precision processing needs of packaging, electronics and other fields.

[0003] Chinese patent announcement number CN215511341U discloses an aluminum foil slitting machine that facilitates quick blade replacement. The machine includes a main body, which comprises a frame and a slitting mechanism. The slitting mechanism includes a drive shaft, a driven shaft, and a slitting assembly. The drive shaft and driven shaft are detachably hinged. A flexible bearing seat is fixed to the top of the frame. A semi-annular countersunk hole is formed on the inner side and top surface of the bearing seat. The end of the driven shaft away from the drive shaft rotatably engages with the countersunk hole, while the end of the drive shaft away from the driven shaft is rotatably connected to the frame. The frame is equipped with a drive component to rotate the drive shaft. The slitting assembly includes a cutter and a mounting sleeve. The mounting sleeve is fixedly connected to the side of the cutter. The driven shaft passes through the cutter and the mounting sleeve and slides with both. A fastening screw is screwed into the inner thread of the mounting sleeve to fix the mounting sleeve to the driven shaft. This application simplifies the process of disassembling and assembling the cutter and facilitates quick blade replacement.

[0004] However, this device has the following drawbacks during use: the driven shaft uses a flexible bearing seat and countersunk hole design. During rotary slitting, the gap between the semi-annular countersunk hole and the shaft causes excessive radial runout, directly affecting the cutting edge quality. Furthermore, the design of applying grease inside the countersunk hole is difficult to adapt to continuous production environments, easily causing dust particles to adhere inside the countersunk hole, accelerating bearing seat wear, and further affecting runout. To address these drawbacks, we propose a cutter changing mechanism for a film slitting machine. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cutting tool changing mechanism for a film slitting machine.

[0006] To address the problems existing in the prior art, this utility model adopts the following technical solution: a film slitting machine blade changing mechanism, comprising:

[0007] The slitting machine cutting blade structure consists of a shaft, bearings rotatably connected to both ends of the shaft, and a positioning shaft fixedly installed on the left end of the shaft. The surface of the positioning shaft has two symmetrical planar grooves.

[0008] The tool changing mechanism includes a first support sleeve and a second support sleeve that are fixedly installed on the two inner side walls of the slitting machine support frame via flanges, a clamping assembly disposed on the opposite side of the first support sleeve and the second support sleeve, and a transmission assembly disposed inside the first support sleeve.

[0009] The clamping assembly includes a semi-circular bushing fixedly installed on the opposite sides of the first support sleeve and the second support sleeve, a support plate fixedly installed on the two inner side walls of the slitting machine support frame, a support seat and a cylinder fixedly installed on the upper surface of the support plate, and a semi-circular clamping plate hinged to the inner wall of the support seat by a pin, wherein the telescopic end of the cylinder is hinged to the end of the semi-circular clamping plate.

[0010] The transmission components include a sleeve rotatably mounted on the inner wall of the first support sleeve, and an open keyway formed on the inner wall of the sleeve that matches the planar groove on the positioning shaft.

[0011] Preferably, the outer surfaces of both the first support sleeve and the second support sleeve are provided with C-shaped opening grooves.

[0012] Preferably, the opening width of the C-shaped slot is greater than the diameter of the positioning shaft.

[0013] Preferably, a motor is fixedly installed on the left side of the slitting machine support frame, and the shaft end of the motor extends into the interior of the first support sleeve and is fixedly connected to the left end of the sleeve.

[0014] Preferably, a disc cutter is mounted on the surface of the shaft.

[0015] Preferably, the inner walls of both the semi-circular clamp and the semi-circular bushing are provided with annular positioning grooves that match the outer ring of the bearing.

[0016] Preferably, the width of the open keyway is clearance-fitted with the planar groove on the positioning shaft, and the clearance is ≤0.05mm.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The C-type open slot structure allows the positioning shaft to be quickly embedded into the open keyway in the sleeve. Combined with the cylinder-driven semi-circular clamping plate, it enables the rapid locking and releasing of the cutting blade structure of the slitting machine. The semi-circular clamping plate and the semi-circular bushing are designed with an embedded annular positioning groove to achieve 360° wrap-around clamping of the bearing outer ring, reducing the radial runout of the tool when it rotates at high speed.

[0019] 2. The annular positioning groove and bearing precision fit technology replace the traditional counterbore lubrication structure, eliminating the risk of grease carbonization and contamination, and reducing the frequency of downtime maintenance. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an undue limitation. In the drawings:

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 This is a three-dimensional schematic diagram of the cutting blade structure of the slitting machine of this utility model;

[0023] Figure 3 This is a front sectional view of the first support sleeve of this utility model;

[0024] Figure 4 This is a three-dimensional schematic diagram of the first support sleeve of this utility model from a first perspective.

[0025] Figure 5 This is a two-dimensional perspective view of the first support sleeve of this utility model;

[0026] Figure 6 This is a three-dimensional schematic diagram of the sleeve of this utility model;

[0027] Figure 7 This is a three-dimensional schematic diagram of the semi-circular clamping plate of this utility model.

[0028] The components in the diagram are numbered as follows: 10 Shaft, 11 Bearing, 12 Positioning Shaft, 13 Disc Cutter, 20 Flange, 21 Slitting Machine Support Frame, 22 First Support Sleeve, 23 Second Support Sleeve, 24 C-type Opening Slot, 30 Semi-circular Bushing, 31 Support Plate, 32 Support Seat, 33 Cylinder, 34 Semi-circular Clamping Plate, 40 Sleeve, 41 Open Keyway, 42 Motor, 50 Annular Positioning Slot. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Please see Figure 1-7 This utility model provides a technical solution: a film slitting machine blade changing mechanism, including: a slitting machine cutting blade structure and a blade changing mechanism.

[0031] The slitting machine cutting blade structure consists of a shaft 10, bearings 11 rotatably connected to both ends of the shaft 10, and a positioning shaft 12 fixedly installed on the left end of the shaft 10. The surface of the positioning shaft 12 has two symmetrical planar grooves, and a disc blade 13 is installed on the surface of the shaft 10.

[0032] The tool changing mechanism includes a first support sleeve 22 and a second support sleeve 23, which are respectively fixedly installed on the two inner side walls of the slitting machine support frame 21 via flanges 20, a clamping assembly disposed on the opposite side of the first support sleeve 22 and the second support sleeve 23, and a transmission assembly disposed inside the first support sleeve 22, wherein the first support sleeve 22 and the second support sleeve 23 have the same shape.

[0033] The clamping assembly includes a semi-circular bushing 30 fixedly installed on the opposite sides of the first support sleeve 22 and the second support sleeve 23, a support plate 31 fixedly installed on the two inner side walls of the slitting machine support frame 21, a support seat 32 and a cylinder 33 fixedly installed on the upper surface of the support plate 31, and a semi-circular clamping plate 34 hinged to the inner wall of the support seat 32 by a pin. The telescopic end of the cylinder 33 is hinged to the end of the semi-circular clamping plate 34. Driving the cylinder 33 to lift can drive the semi-circular clamping plate 34 to rotate along the pin on the support seat 32 as the rotation center, thereby driving the semi-circular clamping plate 34 to approach the semi-circular bushing 30. When the cylinder 33 retracts, the cylinder 33 can be used to pull the semi-circular clamping plate 34 away from the semi-circular bushing 30.

[0034] The transmission components include a sleeve 40 rotatably mounted on the inner wall of the first support sleeve 22, and an open keyway 41 formed on the inner wall of the sleeve 40 that matches the flat groove on the positioning shaft 12. A motor 42 is fixedly mounted on the left side of the slitting machine support frame 21. The shaft end of the motor 42 extends into the interior of the first support sleeve 22 and is fixedly connected to the left end of the sleeve 40. The drive motor 42 can drive the sleeve 40 to rotate.

[0035] Both the outer surfaces of the first support sleeve 22 and the second support sleeve 23 are provided with C-shaped opening grooves 24. The opening width of the C-shaped opening groove 24 is greater than the diameter of the positioning shaft 12. The width of the open keyway 41 is clearance-fitted with the planar groove on the positioning shaft 12, and the clearance is ≤0.05mm. The inner walls of the semi-circular clamping plate 34 and the semi-circular bushing 30 are provided with annular positioning grooves 50 that match the outer ring of the bearing 11. When the bearings 11 at both ends of the shaft 10 are placed on the two semi-circular bushings 30 on the clamping assembly, the bearings 11 will enter the semi-circular bushings 30. Within the annular positioning groove 50 inside the bushing 30, the bearing 11 can be supported by the semi-circular bushing 30, and the bearing 11 can be positioned by the annular positioning groove 50. At this time, the positioning shaft 12 will enter the first support sleeve 22 along the C-shaped opening groove 24 on the first support sleeve 22, and the flat groove on the positioning shaft 12 will be clearance-fitted with the open keyway 41. At this time, the positioning shaft 12 will be assembled with the sleeve 40 as one unit. When the motor 42 rotates and drives the sleeve 40 to rotate, the shaft body 10 can be driven to rotate synchronously by the transmission of the positioning shaft 12.

[0036] When the bearing 11 enters the annular positioning groove 50, the cylinder 33 is driven to lift, which can drive the semi-circular clamping plate 34 to approach the semi-circular bushing 30. Thus, the semi-circular clamping plate 34 and the semi-circular bushing 30 can be used together to clamp the outer ring of the bearing 11 and achieve axial fixation through the annular positioning groove 50. The bearing 11 is a dustproof bearing. The precision fit technology between the annular positioning groove 50 and the bearing 11 replaces the traditional counterbore lubrication structure, eliminates the risk of grease carbonization and contamination, and reduces the frequency of downtime maintenance.

[0037] The device, by setting a C-shaped opening groove 24 structure, allows the positioning shaft 12 to be quickly embedded into the open keyway 41 in the sleeve 40. In conjunction with the semi-circular clamping plate 34 driven by the cylinder 33, it realizes the rapid locking and releasing of the cutting blade structure of the slitting machine. The semi-circular clamping plate 34 and the semi-circular bushing 30 are designed with annular positioning grooves 50 embedded in them to achieve 360° wrapping clamping of the outer ring of the bearing 11, reducing the radial runout of the blade when it rotates at high speed, thereby improving the quality of the cut material.

[0038] Specifically, the working principle and operation method of this utility model are as follows:

[0039] The bearings 11 at both ends of the shaft 10 are placed in the annular positioning grooves 50 of the semi-circular bushing 30 to achieve initial radial fixation. Then, the positioning shaft 12 is inserted along the C-shaped opening groove 24 of the first support sleeve 22, so that its flat groove is precisely matched with the open keyway 41 of the sleeve 40. Then, the cylinder 33 is started to push the semi-circular clamping plate 34 to rotate, which together with the semi-circular bushing 30 clamps the outer ring of the bearing 11. The annular positioning groove 50 achieves 360° wrap-around fixation. The annular positioning groove 50 synchronously restricts the axial displacement of the bearing 11 to prevent it from moving during high-speed rotation. The drive motor 42 drives the sleeve 40 to rotate. Through the cooperation of the open keyway 41 with the flat groove of the positioning shaft 12, the shaft 10 and the disc cutter 13 are driven to rotate synchronously. The high-speed rotating disc cutter 13 maintains low radial runout under the stable support of the bearing 11, ensuring that the material cut is flat. When disassembling, the retraction cylinder 33 pulls the semi-circular clamping plate 34 away from the bearing 11, and the positioning shaft 12 can be pulled out along the C-shaped opening groove 24 to complete the tool change.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art based on the technical solution and concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blade changing mechanism for a film slitting machine, characterized in that, include: The slitting machine cutting blade structure consists of a shaft (10), bearings (11) rotatably connected to both ends of the shaft (10), and a positioning shaft (12) fixedly installed on the left end of the shaft (10). The surface of the positioning shaft (12) has two symmetrically opened planar grooves. The tool changing mechanism includes a first support sleeve (22) and a second support sleeve (23) fixedly installed on the two inner side walls of the slitting machine support frame (21) via flanges (20), a clamping assembly disposed on the opposite side of the first support sleeve (22) and the second support sleeve (23), and a transmission assembly disposed inside the first support sleeve (22). The clamping assembly includes a semi-circular bushing (30) fixedly installed on the opposite sides of the first support sleeve (22) and the second support sleeve (23), a support plate (31) fixedly installed on the two inner side walls of the slitting machine support frame (21), a support seat (32) and a cylinder (33) fixedly installed on the upper surface of the support plate (31), and a semi-circular clamping plate (34) hinged to the inner wall of the support seat (32) by a pin, and the telescopic end of the cylinder (33) is hinged to the end of the semi-circular clamping plate (34). The transmission components include a sleeve (40) rotatably mounted on the inner wall of the first support sleeve (22), and an open keyway (41) formed on the inner wall of the sleeve (40) that is adapted to the planar groove on the positioning shaft (12).

2. The film slitting machine blade changing mechanism according to claim 1, characterized in that: Both the first support sleeve (22) and the second support sleeve (23) have C-shaped opening grooves (24) on their outer surfaces.

3. The film slitting machine blade changing mechanism according to claim 2, characterized in that: The opening width of the C-shaped opening groove (24) is greater than the diameter of the positioning shaft (12).

4. The film slitting machine blade changing mechanism according to claim 1, characterized in that: A motor (42) is fixedly installed on the left side of the slitting machine support frame (21). The shaft end of the motor (42) extends into the interior of the first support sleeve (22) and is fixedly connected to the left end of the sleeve (40).

5. The film slitting machine blade changing mechanism according to claim 1, characterized in that: A disc cutter (13) is mounted on the surface of the shaft (10).

6. The film slitting machine blade changing mechanism according to claim 1, characterized in that: The inner walls of the semi-circular clamp (34) and the semi-circular bushing (30) are both provided with annular positioning grooves (50) that match the outer ring of the bearing (11).

7. The film slitting machine blade changing mechanism according to claim 1, characterized in that: The width of the open keyway (41) is fitted with the planar groove on the positioning shaft (12) with a clearance of ≤0.05mm.

Images