Thermal insulation aluminum profile threading machine

Abstract

The present invention provides a thermal insulation aluminum profile strip threading machine, which is used for threading the insulation strip into the aluminum profile, comprising: a profile positioning mechanism, which has a lower guide finger for guiding and positioning the lower profile in the aluminum profile; a strip feeding mechanism, which is used for conveying the insulation strip and threading it into the groove of the aluminum profile; and a sawing mechanism, which is used for cutting the insulation strip extending out of the end surface of the aluminum profile after the strip feeding mechanism completes the strip threading, and comprises a saw disk unit, which contains a saw disk and a rotating mounting member for mounting the saw disk, wherein the saw disk is located in front of and below the lower guide finger and is mounted on one end of the rotating mounting member, and the radius of the saw disk matches the height of the insulation strip, and the sawing mechanism and the profile positioning mechanism rise or fall synchronously.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum profile strip threading, and in particular relates to a thermal insulation aluminum profile strip threading machine. Background Art

[0002] Thermal insulation aluminum profile doors and windows use thermal insulation to cut off the heat conduction path between the indoor and outdoor sides, which plays a role in indoor heat preservation and energy saving, and is becoming more and more popular. The thermal insulation strips used in the production of thermal insulation aluminum profile doors and windows are divided into fixed-length strips and wire rods. Fixed-length strips are very troublesome for the length change, storage, transportation, stacking and management of aluminum profiles, and are often used for manual threading. Wire rods have the advantages of convenient storage, transportation and stacking, less waste, etc., and are widely used.

[0003] However, the strip threading machines on the market today can only complete the strip threading action, and the insulation strips that extend out of the end face of the aluminum profile need to be manually broken, which not only causes irregular cross-sections after breaking, affecting the next strip threading work, but also wastes manpower and is very inefficient. In addition, a small section of the insulation strip will protrude from the end face of the aluminum profile after manual breaking, affecting the subsequent use of the aluminum profile.

[0004] Figure 6 A schematic diagram of the structure of a wire rod threading machine in a prior art solution is provided. Figure 6 As shown, the wire rod threading machine 200 includes a frame 210, a lifting mechanism 220, a feeding mechanism 230, a profile positioning mechanism 240 and a sawing mechanism 250, and a saw disc 251 in the sawing mechanism 250 is mounted on the free end of a swing arm 252 through a rotating mounting member 253. The working process of the wire rod threading machine 200 is as follows: after the upper and lower aluminum profiles are placed at a predetermined position, the upper and lower guide fingers in the profile positioning mechanism 240 move forward synchronously to position the upper and lower aluminum profiles respectively; the heat insulation strip is inserted into the notch of the upper and lower aluminum profiles under the action of the feeding mechanism 230; after the strip threading is completed, the upper and lower guide fingers in the profile positioning mechanism 240 move backward synchronously to leave a space for cutting the heat insulation strip, and the swing arm 252 in the sawing mechanism 250 rotates upward to drive the saw disc 251 to rise to the cutting position, thereby realizing the rapid and effective cutting of the heat insulation strip extending from the end face of the aluminum profile.

[0005] However, the disadvantage is that the saw disc 251 is installed at the end of the rotating mounting member 253 close to the profile positioning mechanism 240, that is, the other end of the rotating mounting member 253 and the swing arm 252 are located on the side of the saw disc away from the profile positioning mechanism 240, and due to the obstruction of the lower profile, the rotating mounting member 253 and the swing arm 252 can only move in the space below the lower profile, which requires that the radius of the saw disc 251 is at least the sum of the height of the insulation strip and the height of the lower profile. If the size of the lower profile is slightly larger, the radius of the saw disc needs to be increased. As the radius of the saw disc increases, the volume of the strip threading machine increases, and the cost increases; moreover, the lifting and lowering range of the saw disc is very large, and the lifting and lowering is very unstable, which is easy to cause safety hazards. Summary of the invention

[0006] The present invention is made to solve the above-mentioned technical problems, and its purpose is to provide a thermal insulation aluminum profile strip threading machine that can avoid the obstruction and limitation of the lower profile, minimize the size of the saw disk, and quickly and effectively cut the insulation strips extending from the end faces of lower profiles of various models and sizes.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The present invention provides a thermal insulation aluminum profile strip threading machine, which is used to thread the insulation strip into the aluminum profile and has the following characteristics: a profile positioning mechanism, which has a lower guide finger for guiding and positioning the lower profile in the aluminum profile; a strip feeding mechanism, which is used to transport the insulation strip and thread it into the groove of the aluminum profile; and a sawing mechanism, which is used to cut the insulation strip extending out of the end face of the aluminum profile after the strip feeding mechanism completes the strip threading, and comprises a saw disk unit, which contains a saw disk and a rotating mounting member for mounting the saw disk, wherein the saw disk is located in front of and below the lower guide finger and is mounted on the end of the rotating mounting member away from the lower guide finger, and the radius of the saw disk matches the height of the insulation strip, and the sawing mechanism and the forming and positioning mechanism rise or fall synchronously.

[0009] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following features: it also includes a lifting mechanism, including a lifting plate that can be raised or lowered, wherein the sawing mechanism and the profile positioning mechanism are both installed on the lifting plate.

[0010] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following features: wherein the sawing mechanism also includes a lifting unit and a rotating unit, the lifting unit is installed on the lifting plate, and is used to drive the saw disc unit to rise or fall relative to the lifting plate, and the other end of the rotating mounting member is installed on the lifting unit, and the rotating unit is installed on the lifting unit and is connected to the rotating mounting member, and is used to drive the saw disc to rotate.

[0011] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following features: the lifting unit includes a fixed frame, a lifting frame and a lifting drive component, the fixed frame is fixedly arranged on the lifting plate, the lifting frame is installed on the fixed frame and can be raised or lowered relative to the fixed frame, and the lifting drive component is installed on the fixed frame and connected to the lifting frame, and is used to drive the lifting frame to rise or fall.

[0012] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following feature: wherein the lifting frame is installed on the fixed frame through a guide rail slider structure.

[0013] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following features: an upper limit block and a lower limit block are arranged at intervals up and down on the fixed frame, and a stop block located between the upper limit block and the lower limit block is provided on the lifting frame.

[0014] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following features: wherein the rotating mounting part has a mounting shaft and a rotating sleeve, the mounting shaft is fixedly mounted on the lifting frame, the rotating sleeve is rotatably mounted on the mounting shaft, and the saw disc is fixedly mounted on the rotating sleeve.

[0015] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following features: wherein the rotating mounting part also has a bearing, and the bearing is arranged between the mounting shaft and the rotating sleeve.

[0016] The thermal insulation aluminum profile threading machine provided by the present invention may also have the following features: wherein the rotating unit includes a rotating drive component and a transmission component, the rotating drive component is fixedly arranged on the lifting unit, and the transmission component is respectively connected to the rotating drive component and the rotating sleeve.

[0017] In the thermal insulation aluminum profile threading machine provided by the present invention, it can also have the following characteristics: wherein, the transmission component is a transmission belt, the rotating sleeve is a pulley structure, a pulley serving as a driving pulley is provided on the rotating shaft of the rotating drive component, and the transmission belt is installed on the rotating sleeve and the driving pulley; or, the transmission component is a transmission chain, the rotating sleeve is a sprocket structure, a sprocket serving as a driving sprocket is provided on the rotating shaft of the rotating drive component, and the transmission belt is installed on the rotating sleeve and the driving sprocket.

[0018] Functions and Effects of the Invention

[0019] According to the thermal insulation aluminum profile threading machine involved in the present invention, on the one hand, because the saw disc is located in front of and below the lower guide finger and is installed at the end of the rotating mounting part away from the lower guide finger, and the radius of the saw disc matches the height of the insulation strip, the rotating mounting part avoids the obstruction and restriction of the lower profile, and the radius of the saw disc is not affected by the height of the lower profile, thereby minimizing the size of the saw disc, and the insulation strips extending out of the end faces of the lower profiles of various models and sizes can be cut quickly and effectively. On the other hand, because the sawing mechanism and the profile positioning mechanism rise or fall synchronously, the saw disc rises and falls synchronously with the lower guide finger before cutting, and lurks under the lower guide finger, that is, under the insulation strip, which greatly reduces the lifting and lowering range of the saw disc, and the saw disc rises and falls smoothly, avoiding the safety hazards of saw discs with large diameters and large lifting and lowering strokes, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 2 is a schematic diagram of the three-dimensional structure of a thermal insulation aluminum profile threading machine in an embodiment of the present invention;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of a strip feeding mechanism, a profile positioning mechanism and a sawing mechanism in an embodiment of the present invention;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of a strip feeding mechanism and a profile positioning mechanism in an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the three-dimensional structure of the sawing mechanism in an embodiment of the present invention;

[0024] Figure 5 is a schematic diagram of the exploded installation of the sawing mechanism in an embodiment of the present invention; and

[0025] Figure 6 It is a three-dimensional structural schematic diagram of a thermal insulation aluminum profile threading machine in the prior art. DETAILED DESCRIPTION

[0026] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the thermal insulation aluminum profile threading machine of the present invention.

[0027] <Example>

[0028] Figure 1 2 is a schematic diagram of the three-dimensional structure of a thermal insulation aluminum profile threading machine in an embodiment of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of a strip feeding mechanism, a profile positioning mechanism and a sawing mechanism in an embodiment of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the strip feeding mechanism and the profile positioning mechanism in the embodiment of the present invention.

[0029] like Figures 1 to 3 As shown, in this embodiment, the thermal insulation aluminum profile strip threading machine 100 is modified on the basis of the existing thermal insulation aluminum profile strip threading machine, and includes a frame 10, a lifting mechanism 20, two strip feeding mechanisms 30, two profile positioning mechanisms 40 and a sawing mechanism 50.

[0030] like Figure 1 As shown, the frame 10 is a rectangular parallelepiped frame structure, which is used to install the lifting mechanism 20, the strip feeding mechanism 30, the profile positioning mechanism 40 and the sawing mechanism 50.

[0031] like Figures 1 to 3 As shown, the lifting mechanism 20 is used to simultaneously drive the feeding mechanism 30, the profile positioning mechanism 40 and the sawing mechanism 50 to rise or fall relative to the frame 10, so that the feeding mechanism 30, the profile positioning mechanism 40 and the sawing mechanism 50 rise or fall synchronously. The lifting mechanism 20 includes a lifting plate 21 and a lifting driving member 22.

[0032] The lifting plate 21 is installed on the frame 10 through a guide rail slider structure, and can be raised or lowered relative to the frame 10.

[0033] The lifting driving member 22 is fixedly mounted on the frame 10 and connected to the lifting plate 21, and is used to drive the lifting plate 21 to ascend or descend. In this embodiment, the lifting driving member 22 is a speed reducer.

[0034] like Figures 1 to 3 As shown, two strip feeding mechanisms 30 are installed on the lifting plate 21 of the lifting mechanism 20 in a corresponding arrangement on the left and right sides, and are respectively used for conveying the insulation strips and inserting the insulation strips into the notches of the aluminum profiles.

[0035] Each of the strip feeding mechanisms 30 has two strip feeding wheels 31 correspondingly arranged in the upper and lower parts and a strip feeding driving component 32 for driving the two strip feeding wheels 31 to rotate simultaneously; the strip feeding driving component 32 is a speed reducer and is located at the lower part of the entire strip feeding mechanism 30 .

[0036] The two strip feeding mechanisms 30 are respectively a left strip feeding mechanism and a right strip feeding mechanism. The left strip feeding mechanism is fixedly arranged on the lifting plate 21 ; the right strip feeding mechanism is installed on the lifting plate 21 through a guide rail slider structure, so that it can move left and right relative to the lifting plate 21 .

[0037] like Figures 1 to 3 As shown, two profile positioning mechanisms 40 are respectively arranged at the front end portions of the two strip feeding mechanisms 30 for guiding and positioning the aluminum profiles to be fed.

[0038] Each profile positioning mechanism 40 has an upper guide finger 41 and a lower guide finger 42 that can be extended forward and retracted backward synchronously. When the upper guide finger 41 and the lower guide finger 42 are extended forward, their profile introduction ports are respectively aligned with the grooves of the upper and lower aluminum profiles, thereby positioning the upper and lower aluminum profiles respectively.

[0039] Figure 4 is a schematic diagram of the three-dimensional structure of the sawing mechanism in an embodiment of the present invention; Figure 5 It is a schematic diagram of the exploded installation of the sawing mechanism in the embodiment of the present invention.

[0040] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the sawing mechanism 50 is used to cut the insulation strip extending out of the end surface of the aluminum profile after the strip feeding mechanism 30 has completed the strip feeding and the upper guide finger 41 and the lower guide finger 42 in the profile positioning mechanism 40 have retracted. The sawing mechanism 50 includes a lifting unit 51, a saw disc unit 52 and a rotating unit 53.

[0041] like Figure 2 , Figure 4 as well as Figure 5 As shown, the lifting unit 51 is disposed below the profile positioning mechanism 40 and between the two strip feeding mechanisms 30, and is used to simultaneously drive the saw disc unit 52 and the rotating unit 53 to ascend or descend relative to the profile positioning mechanism 40. The lifting unit 51 includes a fixing frame 511, a lifting frame 512, a guide rail slider structure 513, and a lifting driving component 514.

[0042] The fixing frame 511 is fixedly mounted on the lifting plate 21 in the lifting mechanism 20, and comprises a fixing vertical plate 511a, a mounting plate 511b and a reinforcing rib plate 511c. The fixing vertical plate 511a is in an inverted L shape; the mounting plate 511b is fixedly connected to the upper part of the rear end of the fixing vertical plate 511a, and is used to install the fixing vertical plate 511a on the lifting plate 21; the reinforcing rib plate 511c is connected to the fixing vertical plate 511a and the lifting plate 21, and is used to reinforce and fix the fixing vertical plate 511a.

[0043] The lifting frame 512 is installed on the fixed vertical plate 511a of the fixed frame 511, and can be raised or lowered relative to the fixed frame 511. The lifting frame 512 includes a lifting vertical plate 512a and a lifting side plate 512b. The lifting vertical plate 512a is movably installed on the fixed vertical plate 511a of the fixed frame 511 through a guide rail slider 513, and the central position of the lifting side plate 512b is fixedly connected to the front end of the lifting vertical plate 512a.

[0044] The guide rail and slider structure 513 is used to movably install the lifting frame 512 on the lifting frame 511, and includes two guide rails 513a and two sliders 513b. The two guide rails 513a are respectively arranged vertically and fixedly installed on the upper part of the lifting vertical plate 511a. The two sliders 513b correspond to the two guide rails 513a and are fixedly installed on the lifting vertical plate 512a, so that the lifting vertical plate 512 is movably installed on the fixed vertical plate 511a by installing the sliders 513b on the corresponding guide rails 513a.

[0045] The lifting drive member 514 is a pneumatic cylinder, which is used to drive the lifting frame to ascend or descend. The pneumatic cylinder is installed at the lower part of the fixed vertical plate 511a in the fixed frame 511, and its piston rod is connected to the lifting vertical plate 512a in the lifting frame 512 through the mounting block 514a. Of course, according to actual needs, the lifting drive member 514 can also be a hydraulic cylinder.

[0046] In this embodiment, an upper limit block 511d and a lower limit block 511e are arranged at intervals from top to bottom on the upper part of the fixed vertical plate 511a in the fixed frame 511, and a stop block 512c corresponding to the upper limit block 511d and the lower limit block 511e are provided on the lifting vertical plate 512a of the lifting frame 512.

[0047] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the saw disc unit 52 is installed on the lifting unit 51, and can be raised or lowered relative to the profile positioning mechanism 40 under the drive of the lifting unit 51. The saw disc unit 52 includes a saw disc 521 and a rotating mounting member 522.

[0048] The saw disc 521 is disc-shaped and is vertically arranged in the front lower part of the profile positioning mechanism 40. A saw disc mounting hole 521a is provided in the central position of the saw disc 521. In this embodiment, the radius of the saw disc 521 is consistent with the height of the thermal insulation strip to be cut.

[0049] The rotating mounting member 522 is used to rotatably mount the saw disc 521 on the lifting unit 51, and its end away from the lower guide finger 42 is connected to the saw disc 521, and its end close to the lower guide finger 42 is connected to the lifting unit 51. The rotating mounting member 522 has a mounting shaft 522a and a rotating sleeve 522b.

[0050] One end of the mounting shaft 522 a is fixedly mounted on the top of the lifting side plate 512 b in the lifting unit 51 , and the other end extends in a direction away from the strip feeding mechanism 30 .

[0051] The rotating sleeve 522b is rotatably mounted on the mounting shaft 522a, and its end away from the strip feeding mechanism 30 is inserted into the saw disk mounting hole 521a and fixed by a fastening ring 522c. In this embodiment, the rotating sleeve 522b is rotatably mounted on the mounting shaft 522a through a bearing (not shown in the figure), that is, the bearing is arranged between the mounting shaft 522a and the rotating sleeve 522b, and its inner ring and outer ring are respectively connected to the outer surface of the mounting shaft 522 and the inner wall of the rotating sleeve 522b.

[0052] like Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the rotating unit 53 is installed on the lifting unit 51 and connected to the rotating mounting member 522, and is used to drive the saw disc 521 to rotate so as to cut the thermal insulation strip. The rotating unit includes a rotating driving component 531 and a transmission component 532.

[0053] The rotation driving member 531 is a DC motor, which is located between the fixed vertical plate 511 a and the lifting side plate 512 b and is fixedly installed at the bottom of the lifting side plate 512 b.

[0054] The transmission member 532 is connected to the rotation driving member 531 and the rotating sleeve 522b. In this embodiment, the transmission member 532 is a transmission belt, and correspondingly, the rotating sleeve 522b is a pulley structure, and a pulley 531a as a driving pulley is provided on the rotating shaft of the rotation driving member 531, and the transmission belt 532 is installed on the rotating sleeve 522b and the driving pulley 531a.

[0055] Functions and Effects of the Embodiments

[0056] According to the thermal insulation aluminum profile threading machine involved in this embodiment, on the one hand, because the saw disc is located in front of and below the lower guide finger and is installed at the end of the rotating mounting part away from the lower guide finger, and the radius of the saw disc matches the height of the insulation strip, the rotating mounting part avoids the obstruction and restriction of the lower profile, and the radius of the saw disc is not affected by the height of the lower profile, thereby minimizing the size of the saw disc, and the insulation strips extending out of the end faces of the lower profiles of various models and sizes can be cut quickly and effectively. On the other hand, because the sawing mechanism and the profile positioning mechanism rise or fall synchronously, the saw disc rises and falls synchronously with the lower guide finger before cutting, and lurks under the lower guide finger, that is, under the insulation strip, which greatly reduces the lifting and lowering range of the saw disc, and the saw disc rises and falls smoothly, avoiding the safety hazards of saw discs with large diameters and large lifting and lowering strokes, thereby improving safety.

[0057] In addition, because the sawing mechanism and the profile are both installed on the lifting plate of the lifting mechanism to achieve synchronous rising or falling of the two, the structure is simple and the disassembly and assembly are convenient.

[0058] In addition, because the sawing mechanism also includes a lifting unit and a rotating unit, the lifting unit is installed on the lifting plate and can drive the saw disc unit to rise or fall relative to the lifting plate. The other end of the rotating mounting part is installed on the lifting unit. The rotating unit is installed on the lifting unit and is connected to the rotating mounting part. It can drive the saw disc to rotate. It has a simple structure, is easy to manufacture, and has low cost.

[0059] In addition, because the lifting unit includes a fixed frame, a lifting frame and a lifting drive component, the lifting frame is installed on the fixed frame and connected to the lifting drive component. It can rise or fall relative to the fixed frame under the drive of the lifting drive component. The structure is simple and can make full use of the space between the two feeding mechanisms.

[0060] In addition, because the fixed frame is provided with an upper limit block and a lower limit block arranged at intervals up and down, and the lifting frame is provided with stoppers corresponding to the upper limit block and the lower limit block respectively, a good protective effect is played, further improving the safety of the sawing mechanism.

[0061] In addition, because the rotating mounting part has a mounting shaft and a rotating sleeve, the mounting shaft is fixedly mounted on the lifting unit, the rotating sleeve is rotatably mounted on the mounting shaft, and the saw disc is fixedly mounted on the rotating sleeve, the structure is simple, easy to manufacture, and low in cost.

[0062] In addition, because the transmission component is a transmission belt and the rotating sleeve is a pulley structure, a pulley serving as a driving pulley is provided on the rotating shaft of the rotating drive component, and the transmission belt is installed on the rotating sleeve and the driving pulley, the structure is simple, the movement is smooth and noiseless, the manufacturing and installation are simple, and the maintenance is convenient.

[0063] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

[0064] For example, in the above-mentioned embodiment, a belt transmission structure is used between the saw disk and the rotary drive member. However, in the present invention, a chain transmission structure may also be used between the rotary mounting member of the saw disk and the rotary drive member. In this case, the transmission member is a transmission chain, the rotary sleeve is a sprocket structure, a sprocket as a driving sprocket is provided on the rotary shaft of the rotary drive member, and the transmission belt is installed on the rotary sleeve and the driving sprocket.

Claims

1. A thermal insulation aluminum profile strip threading machine, used to thread the insulation strip into the aluminum profile, characterized in that: include: A profile positioning mechanism having a lower guide finger for guiding and positioning a lower profile in the aluminum profile; A strip feeding mechanism, used for conveying the thermal insulation strip and inserting it into the notch of the aluminum profile; as well as The sawing mechanism is used to cut the heat insulation strip extending out of the end surface of the aluminum profile after the strip feeding mechanism completes the strip feeding, and comprises a saw disc unit, wherein the saw disc unit comprises a saw disc and a rotating mounting member for mounting the saw disc. The saw disc is located below and in front of the lower guide finger and is mounted on the end of the rotating mounting member away from the lower guide finger, and the radius of the saw disc matches the height of the thermal insulation strip. The sawing mechanism and the profile positioning mechanism rise or fall synchronously.

2. The thermal insulation aluminum profile threading machine according to claim 1 is characterized in that: Also includes: A lifting mechanism, comprising a lifting plate capable of ascending or descending, Wherein, the sawing mechanism and the profile positioning mechanism are both installed on the lifting plate.

3. The thermal insulation aluminum profile threading machine according to claim 2 is characterized in that: in, The sawing mechanism also includes a lifting unit and a rotating unit. The lifting unit is mounted on the lifting plate and is used to drive the saw disc unit to move up or down relative to the lifting plate. The other end of the rotating mounting member is mounted on the lifting unit. The rotating unit is installed on the lifting unit and connected to the rotating mounting member, and is used to drive the saw disc to rotate.

4. The thermal insulation aluminum profile threading machine according to claim 3 is characterized by: in, The lifting unit comprises a fixed frame, a lifting frame and a lifting drive component. The fixing frame is fixedly arranged on the lifting plate. The lifting frame is installed on the fixed frame and can be raised or lowered relative to the fixed frame. The lifting drive component is installed on the fixing frame and connected to the lifting frame, and is used to drive the lifting frame to perform an ascending or descending action.

5. The thermal insulation aluminum profile threading machine according to claim 4 is characterized in that: in, The lifting frame is installed on the fixing frame through a guide rail slider structure.

6. The thermal insulation aluminum profile threading machine according to claim 4 is characterized by: in, The fixing frame is provided with an upper limit block and a lower limit block which are arranged at intervals up and down. The lifting frame is provided with a stopper located between the upper limit block and the lower limit block.

7. The thermal insulation aluminum profile threading machine according to claim 4 is characterized by: in, The rotating mounting member comprises a mounting shaft and a rotating sleeve. The mounting shaft is fixedly mounted on the lifting frame. The rotating sleeve is rotatably mounted on the mounting shaft. The saw disc is fixedly mounted on the rotating sleeve.

8. The thermal insulation aluminum profile threading machine according to claim 7 is characterized by: in, The rotating mounting member also has a bearing, which is arranged between the mounting shaft and the rotating sleeve.

9. The thermal insulation aluminum profile threading machine according to claim 7, characterized in that: in, The rotating unit comprises a rotating driving component and a transmission component. The rotation driving member is fixedly arranged on the lifting unit, The transmission component is connected to the rotation driving component and the rotating sleeve respectively.

10. The thermal insulation aluminum profile threading machine according to claim 9, characterized in that: in, The transmission member is a transmission belt. The rotating sleeve is a pulley structure. The rotating shaft of the rotary drive member is provided with a pulley as a driving pulley. The transmission belt is installed on the rotating sleeve and the driving pulley; or, The transmission member is a transmission chain, The rotating sleeve is a sprocket structure. The rotating shaft of the rotary drive member is provided with a sprocket as a driving sprocket. The transmission belt is installed on the rotating sleeve and the driving sprocket.

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