A detachable cold cut sawing machine

Abstract

The utility model provides a detachable cold cut sawing machine to solve the technical problem of high replacement cost of present integral cold cut sawing machine. The cold cut sawing machine includes drive assembly and cutting assembly detachable installation through connecting assembly on it, connecting assembly includes the connecting ring of drive assembly and the connecting seat of cutting assembly, is equipped with the connecting barrel of the connecting ring outside of the connecting seat, and this connecting barrel is constituted by the fixed part of integral forming with connecting seat and the detachable part of fixed on it through fastener, is equipped with the transmission on cutting assembly, and is equipped with the elastic baffle ring between its end cover and connecting barrel for limiting the axial displacement of end cover. The utility model realizes the quick dismounting and reliable positioning of cutting assembly through modularization connecting structure, reduces the replacement and maintenance cost significantly, improves the equipment applicability and economy. Meanwhile, setting up the elastic baffle ring between the transmission end cover and connecting barrel, effectively limits the displacement of cutting assembly in the axial direction, prevents the axial displacement in the working process.

Description

Technical Field

[0001] This utility model belongs to the field of metal cutting machinery technology, specifically relating to a detachable cold cutting saw. Background Technology

[0002] Cold cutting saws, as a high-efficiency and precision metal cutting equipment, are widely used for fixed-length cutting of metal materials such as profiles, pipes, and bars. Currently, mainstream cold cutting saws on the market typically adopt an integrated structure design, which means that the drive motor, reduction mechanism, and saw head (including saw blade, spindle, clamping device, etc.) are rigidly connected and encapsulated in the same housing, forming an inseparable whole.

[0003] This traditional integrated design reveals significant limitations in practical use. First, when processing needs change, requiring the replacement of saw heads with different specifications, types, or functions—for example, to cut larger diameters, different materials, or perform special processes—users cannot replace the saw head individually and must purchase a completely new machine. This significantly increases both purchase and operating costs. Second, when the saw head malfunctions or requires maintenance, its tight integration with the motor often leads to inconvenient repairs, long maintenance cycles, and even the potential for partial damage to render the entire machine unusable, reducing its life-cycle value and resulting in resource waste.

[0004] Therefore, existing integrated cold cutting saws suffer from problems such as poor flexibility, limited functionality, high upgrade and replacement costs, and inconvenient maintenance. Utility Model Content

[0005] This utility model provides a detachable cold cutting saw, which aims to solve the technical problem of high replacement costs of the existing integrated cold cutting saw.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A detachable cold-cutting saw includes a drive assembly and a cutting assembly disposed on the drive assembly, wherein the cutting assembly is detachably connected to the drive assembly via a connecting assembly;

[0008] The connecting assembly includes a connecting ring disposed on the driving assembly and a connecting seat disposed on the cutting assembly. The connecting seat is provided with a connecting cylinder for fixing the connecting ring to the connecting seat, and the connecting cylinder is located outside the connecting ring.

[0009] The connecting cylinder includes a fixed part that is integral with the connecting seat and a detachable part disposed on the fixed part. The detachable part is fixed to the fixed part by fasteners.

[0010] The cutting assembly is provided with a gearbox, the gearbox includes an end cap, and an elastic retaining ring is provided between the connecting cylinder and the end cap to limit the axial position of the end cap relative to the connecting cylinder.

[0011] In a preferred embodiment, a pressure ring is provided between the elastic retaining ring and the end cap.

[0012] Based on the above solution, the pressure ring is located between the elastic retaining ring and the transmission end cover, providing a flat and hard force-bearing surface. This evenly distributes the concentrated stress that may be generated during the process of the drive assembly driving the cutting assembly to the entire contact surface of the end cover, thereby effectively preventing damage to the end cover surface and protecting the transmission end cover.

[0013] In a preferred embodiment, the elastic retaining ring is snapped onto the connecting cylinder.

[0014] In a preferred embodiment, the elastic retaining ring is snapped onto the fixed part, and the inner sidewall of the fixed part is provided with an annular groove for installing the elastic retaining ring, with the elastic retaining ring located within the annular groove.

[0015] Based on the above solution, the elastic retaining ring is snapped into the annular groove on the inner sidewall of the fixed part, which can effectively resist the axial impact and vibration generated when the equipment starts, brakes, and withstands the cutting reaction force, thus preventing the cutting component from moving axially relative to the drive component. At the same time, this snap-fit ​​installation requires no additional fasteners, has a compact structure, and is extremely easy to install and remove; only snap ring pliers are needed to complete the installation and removal of the elastic retaining ring.

[0016] In a preferred embodiment, the fastener is a screw, the detachable part has a through hole for the screw to pass through, the fixed part has a screw hole for cooperating with the screw, and there are two fasteners, which are respectively located on both sides of the connecting ring.

[0017] In a preferred embodiment, the fixing part includes an arc-shaped portion that contacts the connecting ring, and connecting plates are respectively provided at both ends of the arc-shaped portion. The connecting plates and the arc-shaped portion are integrally formed, and the screw holes are provided on the connecting plates.

[0018] Based on the above solution, the two symmetrically arranged screws generate a balanced locking force, which allows the detachable part and the fixed part to evenly grip the connecting ring from both sides, effectively avoiding the off-center load problem that may occur with single-point fastening, and ensuring that the connecting ring is firmly clamped and subjected to uniform force.

[0019] In a preferred embodiment, the detachable part includes an arc-shaped plate that contacts the connecting ring, with extension plates at both ends of the arc-shaped plate. The extension plates and the arc-shaped plate are integrally formed, and the through hole is provided on the extension plate.

[0020] Based on the above solution, the arc-shaped plate can tightly cover the outside of the connecting ring, and together with the arc-shaped part of the fixed part, it forms a complete clamping ring, ensuring that the clamping force on the connecting ring is evenly distributed.

[0021] In a preferred embodiment, the driving assembly includes a drive motor, the cutting assembly includes an input shaft, the cutting assembly further includes a saw blade, the input shaft drives the saw blade, and the drive motor includes an output shaft that drives the input shaft via a transmission.

[0022] In a preferred embodiment, the transmission device includes a transmission block disposed on the input shaft, the transmission block having a transmission groove, and a drive block disposed on the output shaft, the drive block cooperating with the transmission groove, a power transmission block being disposed on the inner sidewall of the transmission groove, and a power transmission groove cooperating with the power transmission block being disposed on the drive block.

[0023] In a preferred embodiment, the power transmission block and the transmission block are an integral structure, the power transmission block is evenly distributed in the transmission groove, and the cross-sectional shape of the power transmission block is arc-shaped.

[0024] Based on the above scheme, by setting the power transmission block and power transmission groove on a single plug-in mating surface, the effective force transmission area is significantly increased, which can easily cope with high load and impact load; moreover, the arc-shaped contour of the integrated power transmission block can avoid stress concentration and enhance the fatigue strength of the transmission components.

[0025] The beneficial effects of this utility model are as follows:

[0026] This utility model provides a detachable cold-cutting saw. Through a connecting assembly consisting of a connecting ring, a connecting seat, and a split connecting cylinder, the cutting assembly and the drive assembly are modularly separated, enabling rapid disassembly and replacement of the cutting head and significantly reducing equipment purchase and maintenance costs. The connecting cylinder employs a combination design of fixed and detachable parts, secured with fasteners, ensuring both a secure clamping of the connecting ring and reliable connection, while also simplifying and facilitating disassembly. Simultaneously, an elastic retaining ring is installed between the gearbox end cover and the connecting cylinder, effectively limiting the axial displacement of the cutting assembly, preventing axial movement during operation, and ensuring the stability of power transmission and cutting accuracy. Therefore, this invention provides a detachable cold-cutting saw with a reasonable structure, convenient assembly and disassembly, reliable positioning, and economic practicality. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a first schematic diagram of the structure of a detachable cold cutting saw according to this utility model.

[0029] Figure 2 This is a second schematic diagram of the structure of a detachable cold cutting saw in this utility model.

[0030] Figure 3 yes Figure 2 Enlarged view of point A.

[0031] Figure 4 This is a third schematic diagram of the structure of a detachable cold cutting saw in this utility model.

[0032] Figure 5 This is the fourth schematic diagram of the structure of a detachable cold cutting saw in this utility model.

[0033] Figure 6 This is the fifth schematic diagram of the structure of a detachable cold cutting saw in this utility model.

[0034] Figure 7 yes Figure 6 Enlarged view of point B.

[0035] Explanation of the labels in the diagram:

[0036] 1-Drive assembly; 2-Cutting assembly; 3-Connecting assembly; 31-Connecting ring; 32-Connecting seat; 4-Connecting cylinder; 41-Fixed part; 42-Detachable part; 5-Saw blade; 6-End cap; 7-Elastic retaining ring; 8-Pressure ring; 11-Drive block; 12-Transmission groove; 13-Positioning block; 14-Positioning groove. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0038] See Figures 1-7This embodiment provides a detachable cold cutting saw, including a drive assembly 1 and a cutting assembly 2 disposed on the drive assembly 1. The cutting assembly 2 is detachably connected to the drive assembly 1 via a connecting assembly 3.

[0039] The connecting component 3 includes a connecting ring 31 disposed on the driving component 1 and a connecting seat 32 disposed on the cutting component 2. The connecting seat 32 is provided with a connecting cylinder 4 for fixing the connecting ring 31 to the connecting seat 32. The connecting cylinder 4 is located outside the connecting ring 31.

[0040] The connecting cylinder 4 includes a fixed part 41 that is integral with the connecting seat 32 and a detachable part 42 disposed on the fixed part 41. The detachable part 42 is fixed to the fixed part 41 by fasteners.

[0041] The cutting assembly 2 is provided with a gearbox, the gearbox includes an end cover 6, and an elastic retaining ring 7 is provided between the connecting cylinder 4 and the end cover 6 to limit the axial position of the end cover 6 relative to the connecting cylinder 4.

[0042] Among them, see Figures 6-7 A pressure ring 8 is provided between the elastic retaining ring 7 and the end cap 6.

[0043] Specifically, the pressure ring 8 is located inside the connecting cylinder 4, and the end cap 6 is located at the bottom of the connecting cylinder 4. Under the action of the elastic retaining ring 7, the pressure ring 8 is always in contact with the end cap 6.

[0044] Furthermore, the elastic retaining ring 7 is snapped onto the connecting cylinder 4.

[0045] The elastic retaining ring 7 is snapped onto the fixed part 41. The inner sidewall of the fixed part 41 is provided with an annular groove for installing the elastic retaining ring 7, and the elastic retaining ring 7 is located in the annular groove.

[0046] Specifically, the inner wall of the fixed part 41 has an annular groove near its bottom, with the opening of the groove facing radially inward. The elastic retaining ring 7 is detachably installed in the annular groove through its own elastic deformation. During assembly, one end face of the pressure ring 8 abuts against the end cover 6 of the transmission, while the other end face abuts against the elastic retaining ring 7 installed in the annular groove. The elastic retaining ring 7 provides an axial positioning reference and support for the pressure ring 8. Under the constraint of the elastic retaining ring 7, the pressure ring 8 continuously and evenly transmits axial force to the end cover 6 of the transmission, effectively preventing axial movement of the pressure ring 8 during operation.

[0047] In order to fix the detachable part 42 to the fixed part 41, based on any of the above solutions, the fastener is a screw, the detachable part 42 is provided with a through hole for the screw to pass through, the fixed part 41 is provided with a screw hole that mates with the screw, and there are two fasteners, which are respectively located on both sides of the connecting ring 31.

[0048] The fixing part 41 includes an arc-shaped part that contacts the connecting ring 31. Each end of the arc-shaped part is provided with a connecting plate. The connecting plate and the arc-shaped part are integrally formed. The screw hole is provided on the connecting plate.

[0049] The detachable part 42 includes an arc-shaped plate that contacts the connecting ring 31. Extension plates are provided at both ends of the arc-shaped plate. The extension plates and the arc-shaped plate are integrally formed. The through hole is provided on the extension plate.

[0050] Specifically, both the detachable part 42 and the fixed part 41 are clamps, and the detachable part 42 and the fixed part 41 are fixed by screws, thereby realizing the detachment and fixation of the detachable part 42 and the fixed part 41.

[0051] Additionally, see Figures 2-4 The connecting cylinder 4 is provided with a plurality of positioning grooves 14, and the connecting ring 31 is provided with a plurality of positioning blocks 13 that cooperate with the positioning grooves 14. The protrusion and the positioning grooves 14 cooperate to achieve quick installation and engagement.

[0052] The cutting assembly 2 is driven by the driving assembly 1, wherein the driving assembly 1 includes a drive motor, the cutting assembly 2 includes an input shaft, the cutting assembly 2 also includes a saw blade 5, the input shaft drives the saw blade 5, the drive motor includes an output shaft, and the output shaft drives the input shaft through a transmission.

[0053] Specifically, the drive assembly 1 includes a drive motor as a power source, and the cutting assembly 2 includes an input shaft corresponding to the output shaft of the drive assembly 1. The input shaft transmits power to the main shaft where the saw blade 5 is finally mounted through a gearbox inside the cutting assembly 2, thereby driving the saw blade 5 to rotate. To achieve cross-component power transmission, the output shaft of the drive motor and the input shaft of the cutting assembly 2 are connected through a transmission.

[0054] When the cutting assembly 2 is connected to the drive assembly 1 via the connecting assembly 3, the output shaft of the drive motor, the transmission, and the input shaft of the cutting assembly 2 will be aligned and connected in a straight line. Thus, the rotational power generated by the drive motor is transmitted sequentially through the output shaft, transmission, input shaft, internal speed change mechanism of the cutting assembly 2, and saw blade 5, ensuring that the saw blade 5 receives sufficient torque and speed to perform the cutting operation.

[0055] The transmission device includes a transmission block mounted on the input shaft, the transmission block having a transmission groove 12. The transmission device also includes a drive block 11 mounted on the output shaft. The input shaft is threadedly fixed to the upper end of the drive block 11, thereby transmitting power to the drive block 11. The drive block 11 engages with the transmission groove 12, the inner wall of the transmission groove 12 having a power transmission block, and the drive block 11 having a power transmission groove that engages with the power transmission block.

[0056] The power transmission block and the transmission block are an integral structure. The power transmission block is evenly distributed in the transmission groove 12, and the cross-sectional shape of the power transmission block is arc-shaped.

[0057] Specifically, the transmission device includes a transmission block disposed at the input shaft end of the cutting assembly 2, and a drive block 11 disposed at the output shaft end of the driving assembly 1. At least one axially extending transmission groove 12 is formed on the circumferential sidewall of the transmission block. Multiple transmission grooves 12 are evenly distributed along the circumferential direction of the transmission block. The structure of the drive block 11 is adapted to the transmission block, and its body has a protruding portion that can be inserted into the transmission groove 12; that is, the drive block 11 itself, through its cooperation with the transmission groove 12, constitutes a key for transmitting power. A power transmission block protruding into the groove is provided on at least one inner sidewall of the transmission groove 12. Correspondingly, a power transmission groove matching the shape and position of the power transmission block is provided on the key portion of the drive block 11 that is inserted into the transmission groove 12.

[0058] When the cutting component 2 approaches and docks with the driving component 1 via the connecting component 3, the driving block 11 is inserted into the transmission groove 12 of the transmission block. During this process, the protruding key portion on the driving block 11 not only contacts the inner wall of the transmission groove 12, but the power transmission groove on the driving block 11 also engages with the power transmission block on the inner wall of the transmission groove 12.

[0059] The following explanation, based on the working principle, further illustrates this utility model:

[0060] When it is necessary to disassemble the cutting assembly 2, use a tool to loosen and remove the fasteners that fix the detachable part 42 to the fixed part 41, and the detachable part 42 can be removed from the connecting cylinder 4; at this time, the constraint of the connecting ring 31 is released, and the operator can smoothly pull the entire cutting assembly 2 out of the drive assembly 1 along the axial direction, so that the drive block 11 on the output shaft is disengaged from the transmission groove 12 of the transmission block on the input shaft, thereby completing the disassembly.

[0061] When the cutting assembly 2 needs to be installed, align the input shaft of the cutting assembly 2 of the required specifications with the output shaft of the drive assembly 1, ensuring that the drive block 11 and the transmission groove 12 are aligned. Then, push the cutting assembly 2 in axial direction until the drive block 11 is fully inserted into the transmission groove 12, the connecting ring 31 enters the slot of the fixed part 41, and the pressure ring 8 is in close contact with the elastic retaining ring 7. Subsequently, cover the outside of the connecting ring 31 with the arc-shaped plate of the detachable part 42, aligning and fitting the extension plates at both ends of the connecting plate of the fixed part 41. Finally, use fasteners to pass through the through holes and screw them into the screw holes to tighten them, thus completing the installation and putting it into use immediately.

[0062] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. A detachable cold-cutting saw, characterized in that: It includes a drive component and a cutting component disposed on the drive component, wherein the cutting component is detachably connected to the drive component via a connecting component; The connecting assembly includes a connecting ring disposed on the driving assembly and a connecting seat disposed on the cutting assembly. The connecting seat is provided with a connecting cylinder for fixing the connecting ring to the connecting seat, and the connecting cylinder is located outside the connecting ring. The connecting cylinder includes a fixed part that is integral with the connecting seat and a detachable part disposed on the fixed part. The detachable part is fixed to the fixed part by fasteners. The cutting assembly is provided with a gearbox, the gearbox includes an end cap, and an elastic retaining ring is provided between the connecting cylinder and the end cap to limit the axial position of the end cap relative to the connecting cylinder.

2. The detachable cold-cutting saw according to claim 1, characterized in that: A pressure ring is provided between the elastic retaining ring and the end cap.

3. A detachable cold-cutting saw according to claim 2, characterized in that: The elastic retaining ring is engaged with the connecting cylinder.

4. A detachable cold-cutting saw according to claim 3, characterized in that: The elastic retaining ring is snapped onto the fixed part, and the inner sidewall of the fixed part is provided with a groove for installing the elastic retaining ring, and the elastic retaining ring is located in the groove.

5. A detachable cold-cutting saw according to claim 1, characterized in that: The fastener is a screw. The detachable part has a through hole for the screw to pass through, and the fixed part has a screw hole that mates with the screw. There are two fasteners, which are located on both sides of the connecting ring.

6. A detachable cold-cutting saw according to claim 5, characterized in that: The fixing part includes an arc-shaped part that contacts the connecting ring. Connecting plates are provided at both ends of the arc-shaped part. The connecting plates and the arc-shaped part are integral structures. The screw holes are provided on the connecting plates.

7. A detachable cold-cutting saw according to claim 5, characterized in that: The detachable part includes an arc-shaped plate that contacts the connecting ring. Each end of the arc-shaped plate has an extension plate. The extension plate and the arc-shaped plate are integrally formed. The through hole is provided on the extension plate.

8. A detachable cold-cutting saw according to claim 1, characterized in that: The drive assembly includes a drive motor, the cutting assembly includes an input shaft, the cutting assembly further includes a saw blade, the input shaft drives the saw blade, and the drive motor includes an output shaft, the output shaft drives the input shaft through a transmission.

9. A detachable cold-cutting saw according to claim 8, characterized in that: The transmission device includes a transmission block disposed on the input shaft, the transmission block having a transmission groove, and a drive block disposed on the output shaft, the drive block cooperating with the transmission groove, a power transmission block being disposed on the inner side wall of the transmission groove, and a power transmission groove cooperating with the power transmission block being disposed on the drive block.

10. A detachable cold-cutting saw according to claim 9, characterized in that: The power transmission block and the transmission block are an integral structure. The power transmission block is evenly distributed in the transmission groove, and the cross-sectional shape of the power transmission block is arc-shaped.

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