Automatic film tube threading device and tube threading method

Abstract

The present invention discloses an automatic film tube threading device and a tube threading method, comprising: a tube threading assembly frame, the tube threading assembly frame being provided with an assembly slot for placing aluminum tubes; an aluminum tube feeding mechanism, the aluminum tube feeding mechanism comprising an aluminum tube feeding frame and a push plate, the aluminum tube feeding mechanism and the tube threading assembly frame being sequentially distributed along the width direction of the assembly slot; a film tube threading mechanism, the film tube threading mechanism comprising a tube threading clamp and a tube threading clamp driving mechanism for driving the tube threading clamp to move; a film feeding mechanism, the film feeding mechanism and the film tube threading mechanism being respectively located at both ends of the assembly slot in the length direction; a film cutting mechanism, the film cutting mechanism being located between the aluminum tube feeding mechanism and the film feeding mechanism; and a material gripping mechanism, the material gripping mechanism being located above the tube threading assembly frame. This solution is suitable for large-scale production and, compared to manual tube threading, is highly efficient, allows for uninterrupted operation, has low production costs, and provides stable quality of film threading on each aluminum tube.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe penetration devices, in particular to an automatic film pipe penetration device and a pipe penetration method thereof. Background Art

[0002] Ceramic PTC heaters are highly efficient and uniformly distribute heat. They offer excellent thermal conductivity, a uniform heating surface temperature, and eliminate hot and cold spots in the equipment. They offer advantages such as a long lifespan, excellent thermal insulation, strong mechanical properties, corrosion resistance, and resistance to magnetic fields. Ceramic PTC heating elements are semiconductor thermistors, the core components of which are a heating core and an aluminum tube. The heating core is assembled within the tube. Due to technical requirements, a film is wound within the tube, and the heating core needs to be threaded through the film. Existing film threading is performed manually, requiring the film to be inserted into the tube one by one. This is cumbersome, with high labor costs and low efficiency.

[0003] For example, Chinese patent publication number CN105800308A, publication date July 27, 2016, is named "Automatic aluminum tube threading device for heating core suitable for ceramic PTC assembly", which includes a grabbing mechanism, a heating core pushing mechanism, a heating core guiding mechanism, an aluminum tube assembly rack and a finished product conveyor belt installed on the frame. The heating core pushing mechanism, the heating core guiding mechanism, the aluminum tube assembly rack and the finished product conveyor belt are arranged in sequence on the frame along the processing direction of the heating core, and the grabbing mechanism is installed above the aluminum tube assembly rack; the heating core guiding mechanism is located between the outlet end of the heating core pushing mechanism and the inlet end of the aluminum tube assembly rack, which presses the film in the aluminum tube and guides the heating core when it passes through the aluminum tube.

[0004] The disadvantages of the existing patents are that the existing film tube threading is performed manually, and the staff manually thread the film into the aluminum tube, which has the problems of troublesome operation, high labor cost and low work efficiency. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem that the existing film tube threading is done manually, and the staff manually thread the film into the aluminum tube, which is cumbersome to operate, has high labor costs and low work efficiency. An automatic film tube threading device and a tube threading method are provided to realize automatic film tube threading, which is suitable for large-scale production and greatly improves production efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A film automatic tube threading device, comprising:

[0008] A pipe-threading assembly rack is provided with an assembly slot for placing the aluminum pipe;

[0009] An aluminum tube feeding mechanism comprises an aluminum tube feeding frame and a pushing plate, wherein the aluminum tube feeding mechanism and the tube threading assembly frame are sequentially distributed along the width direction of the assembly slot;

[0010] A film tube insertion mechanism, comprising a tube insertion clamp and a tube insertion clamp driving mechanism for driving the tube insertion clamp to move;

[0011] The film feeding mechanism and the film tube threading mechanism are respectively located at both ends of the assembly groove in the length direction;

[0012] The film cutting mechanism is located between the aluminum tube feeding mechanism and the film feeding mechanism;

[0013] The gripping mechanism is located above the tube threading assembly frame. The automatic film tube threading device described in this solution utilizes a film feeding mechanism and a film tube threading mechanism to automatically thread film through aluminum tubes on the tube threading assembly frame. Compared to manual tube threading, this device allows for large-scale, uninterrupted production, reduces labor costs, increases production efficiency, and ensures consistent quality during film tube threading.

[0014] Working principle: Aluminum tubes are placed in the aluminum tube feeding mechanism, the grabbing mechanism grabs the aluminum tubes in the aluminum tube feeding mechanism and places them into the assembly slot of the tube threading assembly frame, the tube threading clamp driving mechanism drives the tube threading clamp to pass through the aluminum tube and grab the film at the discharge end of the film feeding mechanism, the tube threading clamp threads the film into the aluminum tube, and the film cutting mechanism interrupts the threaded film to realize the automatic tube threading operation of the film for a single aluminum tube.

[0015] Preferably, a clamping mechanism is provided at both ends of the tube threading assembly frame. The clamping mechanism comprises a clamping plate and a rotary downward-pressing cylinder that drives the clamping plate to rotate horizontally and press downward. The clamping plate clamps both ends of the aluminum tube against the tube threading assembly frame. The clamping mechanism is used to secure the aluminum tube and prevent it from shaking or tilting during the film threading process.

[0016] Preferably, the film tube insertion mechanism further includes a guide frame, located at one end of the tube insertion assembly frame facing the tube insertion clamp. The guide frame is provided with a guide groove that intersects the assembly groove. A guide hole is provided on a sidewall of the guide groove, through which one end of the tube insertion clamp passes and is located. In an initial state, the clamping end of the tube insertion clamp passes through the guide hole and is located within the guide groove. The guide groove and guide hole serve as a guide and positioning mechanism.

[0017] Preferably, the pipe threading clamp includes an upper clamping piece and a lower clamping piece, the upper and lower clamping pieces being connected by a connecting portion, the upper clamping piece being bent upward at the connection with the connecting portion, and the upper clamping piece being elastically arranged above the lower clamping piece. One end of the pipe threading clamp is connected and fixed to the upper and lower clamping pieces by the connecting portion, and the other end is an open clamping end, which facilitates the clamping of the film and the insertion of the film into the aluminum tube.

[0018] Preferably, the pipe clamp driving mechanism includes a base plate, a movable seat and a movable seat driving mechanism for driving the movable seat to move are provided on the base plate, an adjusting block for pressing the pipe clamp and an adjusting block driving cylinder for driving the adjusting block to move are provided on the movable seat, the pipe clamp passes through the adjusting block and is connected to the movable seat, the movable seat is arranged on the base plate by means of a guide rail, and the adjusting block is arranged on the movable seat by means of a guide rail. An adjusting hole is provided on the adjusting hole, the pipe clamp passes through the adjusting hole, the thickness of the adjusting hole is equal to the sum of the thickness of the upper clamping piece and the thickness of the lower clamping piece, the adjusting block moves along the length direction of the pipe clamp to realize the opening and closing of the clamping end of the pipe clamp. The closure of the clamping end of the pipe clamp makes it convenient to extend into the aluminum tube on the one hand, and convenient to clamp the film and transfer it into the aluminum tube after passing through the aluminum tube on the other hand. The movable seat is used to control the movement of the pipe clamp, and the adjusting block is used to control the opening and closing of the pipe clamp.

[0019] Preferably, a magnet is provided at the bottom of the guide groove, one end of the lower clamping piece located in the guide groove is covered with an iron sheet, and the clamping mechanism further comprises a control switch, the control switch is provided with a first electrical contact, the rotary downward-pressing cylinder is provided with a second electrical contact, the first electrical contact passes through the guide frame and extends into the guide groove, the second electrical contact passes through the guide frame and extends into the guide groove, the magnet attracts the iron sheet so that the iron sheet overlaps the first electrical contact and the second electrical contact to realize the opening and closing of the rotary downward-pressing cylinder. The magnet cooperates with the iron sheet of the pipe clamp to realize a linkage reaction of the clamping mechanism. In the initial position, the iron sheet is located above the magnet, and the magnet attracts the iron sheet, causing the iron sheet to overlap the first and second electrical contacts, causing the rotary downward pressure cylinder to connect the control switch. The rotary downward pressure cylinder drives the clamping plate to rotate horizontally above the aluminum tube and drives the clamping plate downward to press the aluminum tube; when the tube clamp driving mechanism drives the tube clamp to extend into the aluminum tube, the magnet attracts the iron sheet to keep the clamping end of the tube clamp in a closed state; when the tube clamp penetrates the aluminum tube, the clamping mechanism maintains the clamping state. When the film is completely threaded through the tube, the magnet attracts the iron sheet to overlap the first and second electrical contacts, and the rotary downward pressure cylinder connects the control switch and releases the aluminum tube to facilitate the removal of the aluminum tube after the film is threaded through the tube. There are multiple clamping mechanisms, and the rotary downward pressure cylinders of the multiple clamping mechanisms are connected in series and controlled to open and close by the control switch to ensure that the clamping mechanism presses the aluminum tube during the film threading process.

[0020] Preferably, the aluminum tube feeding rack includes a base frame and brackets symmetrically arranged at both ends of the base frame, the brackets are provided with vertically distributed feeding troughs, the feeding troughs limit the vertical stacking of aluminum tubes, the lower end of the feeding trough is provided with a feeding port facing the side of the tube-piercing assembly rack, the base frame is provided with a pushing trough, the pushing trough is provided with a pushing port facing the side opposite to the tube-piercing assembly rack, one end of the pushing plate passes through the pushing port and is moved and arranged in the pushing trough. The height of the feeding port is consistent with the thickness of the aluminum tube, the pushing plate pushes the vertically stacked aluminum tubes from the feeding port to the side of the feeding trough close to the tube-piercing assembly trough, the side of the feeding trough close to the tube-piercing assembly trough is provided with a first sensor, after the first sensor senses the aluminum tube, the grabbing mechanism grabs the aluminum tube and places it into the assembly trough, the tube-piercing assembly rack is provided with a second sensor, after the second sensor senses the aluminum tube is placed in the assembly trough, the control switch drives the clamping mechanism to clamp the aluminum tube.

[0021] Preferably, the film feed mechanism includes a film rack and a plurality of film feed racks. The film feed rack is provided with a feed hole, within which a support tube is positioned. The film feed racks are sleeved onto the support tube and arranged sequentially along the central axis of the support tube. The mechanism also includes a base, to which the end of the support tube facing the film rack is fixed. The cross-sectional radius of the support tube gradually decreases from the end proximal to the film rack to the end proximal to the film cutting mechanism. The film is wound around the support tube so as to be uniformly rolled into a tubular structure suitable for insertion into the aluminum tube.

[0022] Preferably, the film cutting mechanism includes a clamping plate and a shearing blade, and further includes a clamping plate drive mechanism for driving the clamping plate to clamp, and a shearing blade drive mechanism for driving the shearing blade to open and close. The film cutting mechanism is connected to the film tube threading mechanism. When the film passes through the aluminum tube, the film cutting mechanism shears the film at the end of the aluminum tube near the film cutting mechanism. After shearing, the adjustment block controls the clamping end of the tube threading clamp to open, allowing the aluminum tube to be removed.

[0023] The tube threading method of the automatic film tube threading device according to any of the above items comprises the following steps in sequence:

[0024] Step 1: Wrap the film on the film rack around the support tube and stretch it through the film feeding rack to the end of the tube assembly rack facing the film feeding mechanism, and stack the aluminum tube vertically between the brackets of the aluminum tube feeding rack;

[0025] Step 2: Start the automatic film tube threading device. The push plate pushes the aluminum tube at the bottom of the aluminum tube feeding rack to the side of the pushing trough facing the tube threading assembly rack. The grabbing mechanism grabs the pushed aluminum tube and places it into the assembly slot of the tube threading assembly rack. The clamping mechanism clamps both ends of the aluminum tube.

[0026] Step three: the adjusting block drives the air cylinder to drive the adjusting block to move toward the pipe-threading assembly frame, and the adjusting block presses the upper clamping piece onto the lower clamping piece, so that the clamping end of the pipe-threading clamp is closed, and the movable seat driving mechanism drives the movable seat to move toward the pipe-threading assembly frame, so that the pipe-threading clamp penetrates into the aluminum tube, and the adjusting block drives the air cylinder to drive the adjusting block to reset so that the clamping end of the pipe-threading clamp opens, and the clamping end of the pipe-threading clamp passes through the aluminum tube to reach the discharge end of the film feeding mechanism, and the adjusting block drives the air cylinder to drive the adjusting block to move toward the pipe-threading assembly frame so that the clamping end of the pipe-threading clamp closes and grabs the film, and the movable seat driving mechanism drives the movable seat to reset, and the pipe-threading clamp clamps the film so that the film completely passes through the aluminum tube, and the film cutting mechanism cuts the film at the discharge end of the film feeding mechanism;

[0027] Step 4: The adjusting block drives the cylinder to drive the adjusting block to reset so that the clamping end of the tube clamp opens, the tube clamp releases the film, and takes out the aluminum tube, realizing automatic tube threading of the film.

[0028] Therefore, the present invention has the following beneficial effects: it is applicable to large-scale production, has high efficiency compared to manual pipe threading, can operate uninterruptedly, has low production cost, and has stable quality of film pipe threading of each aluminum tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 It is a structural schematic diagram of the film tube-penetrating mechanism in the present invention.

[0031] Figure 3 It is a structural schematic diagram of the pipe clamp in the present invention.

[0032] Figure 4 It is a structural schematic diagram of the guide frame in the present invention.

[0033] As shown in the picture:

[0034] Pipe assembly frame 1, assembly slot 1.1,

[0035] Feed rack 2, base frame 2.1, bracket 2.2, feed trough 2.3, feed port 2.4, push trough 2.5, push port 2.6,

[0036] Push plate 3,

[0037] Pipe clamp 4, upper clamping piece 4.1, lower clamping piece 4.2, connecting part 4.3, iron sheet 4.4,

[0038] Pipe clamp drive mechanism 5, bottom plate 5.1, moving seat 5.2, adjustment block 5.3, adjustment block drive cylinder 5.4,

[0039] Film cutting mechanism 6, material grabbing mechanism 7,

[0040] Pressing mechanism 8, pressing plate 8.1, rotating pressing cylinder 8.2, control switch 8.3, first electrical contact 8.4, second electrical contact 8.5,

[0041] Guide frame 9, guide groove 9.1, guide hole 9.2,

[0042] Magnet 10,

[0043] Film feeding mechanism 11, film material rack 11.1, film feeding rack 11.2, support tube 11.3,

[0044] Aluminum tube 12. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the technical solution embodiments of the present invention clearer, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0046] Example 1, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The shown film automatic tube threading device includes: a tube threading assembly frame 1, which is provided with an assembly groove 1.1 for placing aluminum tubes; an aluminum tube feeding mechanism, which includes an aluminum tube feeding frame 2 and a pushing plate 3, and the aluminum tube feeding mechanism and the tube threading assembly frame 1 are distributed in sequence along the width direction of the assembly groove 1.1; a film tube threading mechanism, which includes a tube threading clamp 4 and a tube threading clamp driving mechanism 5 for driving the tube threading clamp 4 to move; a film feeding mechanism 11, which is respectively located at the two ends of the assembly groove 1.1 in the length direction; a film cutting mechanism 6, which is located between the aluminum tube feeding mechanism and the film feeding mechanism 11; and a grabbing mechanism 7, which is located above the tube threading assembly frame 1. In this solution, an automatic film tube threading device realizes the automatic tube threading technology of the film in the aluminum tube through the film feeding mechanism 11 and the film tube threading mechanism on the tube threading assembly frame 1. Compared with manual tube threading, it can carry out large-scale uninterrupted production operations, with low labor costs, high production efficiency, and can ensure consistent production quality of film tube threading.

[0047] Specifically, the gripping mechanism 7 includes multiple sets of gripping clamps. Any set of gripping clamps is distributed along the length of the assembly slot 1.1. Multiple sets of gripping clamps are sequentially distributed along the width of the assembly slot 1.1. These gripping clamps simultaneously grasp aluminum tubes 12 awaiting threading and remove completed threading tubes, thereby improving production efficiency. The threading assembly rack 1, the aluminum tube feeding mechanism, the film threading mechanism, the film feeding mechanism 11, the film cutting mechanism 6, and the gripping mechanism 7 are connected and controlled via a PLC system.

[0048] In this embodiment, Figure 4As shown, a clamping mechanism 8 is provided at both ends of the tube threading assembly frame 1. The clamping mechanism 8 comprises a clamping plate 8.1 and a rotary downward-pressing cylinder 8.2 that drives the clamping plate 8.1 to rotate horizontally and press downward. The clamping plate 8.1 clamps the ends of the aluminum tube against the tube threading assembly frame 1. The clamping mechanism 8 is used to secure the aluminum tube and prevent it from shaking or tilting during the film threading process.

[0049] Specific implementation structure, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the film tube insertion mechanism also includes a guide frame 9, which is located at one end of the tube insertion assembly frame 1 facing the tube insertion clamp 4. The guide frame 9 is provided with a guide groove 9.1, which is connected to the assembly groove 1.1. The side wall of the guide groove 9.1 is provided with a guide hole 9.2. One end of the tube insertion clamp 4 passes through the guide hole 9.2 and is located in the guide groove 9.1. In the initial state, the clamping end of the tube insertion clamp 4 passes through the guide hole 9.2 and is located in the guide groove 9.1. The guide groove 9.1 and the guide hole 9.2 have the function of guiding and positioning. The tube insertion clamp 4 includes an upper clamping piece 4.1 and a lower clamping piece 4.2. The upper clamping piece 4.1 and the lower clamping piece 4.2 are connected by a connecting portion 4.3. The connection between the upper clamping piece and the connecting portion 4.3 is bent upward. The upper clamping piece 4.1 is elastically arranged above the lower clamping piece 4.2. One end of the pipe threading clamp 4 is connected to and fixed to the upper clamping piece 4.1 and the lower clamping piece 4.2 via a connecting portion 4.3. The other end is an open clamping end, which facilitates the clamping of the film and allows the film to be inserted into the aluminum tube. The pipe threading clamp driving mechanism 5 includes a base plate 5.1, a movable seat 5.2 provided on the base plate 5.1, and a movable seat 5.2 driving mechanism for driving the movable seat 5.2. The movable seat 5.2 is provided with an adjustment block 5.3 for pressing the pipe threading clamp 4 and an adjustment block driving cylinder 5.4 for driving the adjustment block 5.3. The pipe threading clamp 4 passes through the adjustment block 5.3 and is connected to the movable seat 5.2. The movable seat 5.2 is movably mounted on the base plate 5.1 via a guide rail, and the adjustment block 5.3 is movably mounted on the movable seat 5.2 via a guide rail. The adjustment hole is provided with an adjustment hole, through which the tube clamp 4 passes. The thickness of the adjustment hole is equal to the sum of the thicknesses of the upper clamping piece 4.1 and the lower clamping piece 4.2. The adjustment block 5.3 moves along the length of the tube clamp 4 to open and close the clamping end of the tube clamp 4. The closed clamping end of the tube clamp 4 facilitates insertion into the aluminum tube and facilitates the transfer of the film after passing through the aluminum tube. The movable base 5.2 is used to control the movement of the tube clamp 4, and the adjustment block 5.3 is used to control the opening and closing of the tube clamp 4.

[0050] Further, such as Figure 1As shown, the aluminum tube feeding rack 2 includes a base frame 2.1 and brackets 2.2 symmetrically arranged at both ends of the base frame 2.1, and a vertically distributed feeding trough 2.3 is provided on the bracket 2.2. The feeding trough 2.3 limits the vertical stacking of the aluminum tubes, and the lower end of the feeding trough 2.3 is provided with a feeding port 2.4 facing the side of the tube assembly rack 1, and a pushing trough 2.5 is provided on the base frame 2.1. The pushing trough 2.5 is provided with a pushing port 2.6 on the side opposite to the tube assembly rack 1, and one end of the pushing plate 3 passes through the pushing port 2.6 and is movably arranged in the pushing trough 2.5. The height of the feed port 2.4 is consistent with the thickness of the aluminum tube. The push plate 3 pushes the vertically stacked aluminum tubes from the feed port 2.4 to the side of the feed trough 2.3 close to the pipe assembly groove 1.1. A first sensor is provided on the side of the feed trough 2.3 close to the pipe assembly groove 1.1. After the first sensor senses the aluminum tube, the grabbing mechanism 7 grabs the aluminum tube and places it into the assembly groove 1.1. A second sensor is provided on the pipe assembly frame 1. After the second sensor senses that the aluminum tube is placed in the assembly groove 1.1, the clamping mechanism 8 is driven by the control switch 8.3 to clamp the aluminum tube.

[0051] Further, such as Figure 1 As shown, the film feed mechanism 11 comprises a film feed rack 11.1 and several film feed racks 11.22. Each film feed rack 11.22 is provided with a feed hole, within which a support tube 11.3 is positioned. The film feed racks 11.22 are sleeved onto the support tube 11.3 and arranged sequentially along the central axis of the support tube 11.3. The film feed mechanism 11 also includes a base, to which the ends of the support tubes 11.3 facing the film feed rack 11.1 are fixed. The cross-sectional radius of the support tubes 11.3 gradually decreases from the end closest to the film feed rack 11.1 to the end closest to the film cutting mechanism 6. The film is wound around the support tubes 11.3, forming a uniform tubular structure suitable for insertion into the aluminum tube.

[0052] Specifically, such as Figure 1 As shown, the film cutting mechanism 6 includes a clamping plate and a shearing blade, as well as a clamping plate drive mechanism for tightening the clamping plate and a shearing blade drive mechanism for opening and closing the shearing blade. The film cutting mechanism 6 is connected to the film tube threading mechanism. After the film passes through the aluminum tube, the film cutting mechanism 6 shears the film at the end of the aluminum tube near the film cutting mechanism 6. After shearing, the adjustment block 5.3 controls the clamping end of the tube threading clamp 4 to open, allowing the aluminum tube to be removed.

[0053] The present invention has the following beneficial effects: it is applicable to large-scale production, has high efficiency compared to manual pipe threading, can operate uninterruptedly, has low production cost, and has stable film pipe threading quality for each aluminum pipe.

[0054] The aluminum tube feeding mechanism, the tube threading assembly frame 1 and the output belt are distributed along the width direction of the assembly slot 1.1.

[0055] Example 2: A tube-threading method of a film automatic tube-threading device according to Example 1, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the following steps are included in sequence:

[0056] Step 1: Wrap the film on the film rack 11.1 around the support tube 11.3 and stretch it through the film feed rack 11.22 to the end of the tube assembly rack 1 facing the film feed mechanism 11, and vertically stack the aluminum tube between the brackets 2.2 of the aluminum tube feed rack 2;

[0057] Step 2: Start the automatic film tube threading device, the push plate 3 pushes the aluminum tube at the bottom of the aluminum tube feeding rack 2 to the side of the pushing groove 2.5 facing the tube threading assembly rack 1, the grabbing mechanism 7 grabs the pushed aluminum tube and puts it into the assembly groove 1.1 of the tube threading assembly rack 1, and the clamping mechanism clamps both ends of the aluminum tube;

[0058] Step three: the adjusting block drives the cylinder 5.4 to drive the adjusting block 5.3 to move toward the pipe threading assembly frame 1, and the adjusting block 5.3 presses the upper clamping piece 4.1 onto the lower clamping piece 4.2, so that the clamping end of the pipe threading clamp 4 is closed, and the movable seat 5.2 driving mechanism drives the movable seat 5.2 to move toward the pipe threading assembly frame 1, so that the pipe threading clamp 4 penetrates the aluminum tube, and the adjusting block drives the cylinder 5.4 to drive the adjusting block 5.3 to reset so that the clamping end of the pipe threading clamp 4 is opened, and the clamping end of the pipe threading clamp 4 passes through the aluminum tube to reach the discharge end of the film feeding mechanism 11, and the adjusting block drives the cylinder 5.4 to drive the adjusting block 5.3 to move toward the pipe threading assembly frame 1 so that the clamping end of the pipe threading clamp 4 is closed and grabs the film, and the movable seat 5.2 driving mechanism drives the movable seat 5.2 to reset, and the pipe threading clamp 4 clamps the film so that the film completely passes through the aluminum tube, and the film cutting mechanism 6 cuts the film at the discharge end of the film feeding mechanism 11;

[0059] Step 4: The adjusting block drives the cylinder 5.4 to drive the adjusting block 5.3 to reset so that the clamping end of the tube-threading clamp 4 opens, the tube-threading clamp 4 releases the film, and takes out the aluminum tube, thereby realizing automatic tube-threading of the film.

[0060] Example 3: Based on Example 1, the guide seat is further optimized. Figure 4As shown, a magnet 10 is provided at the bottom of the guide groove 9.1. One end of the lower clamping piece 4.2 located within the guide groove 9.1 is covered with an iron sheet 4.4. The clamping mechanism 8 also includes a control switch 8.3, which is provided with a first electrical contact 8.4. A second electrical contact 8.5 is provided on the rotary downward-pressing cylinder 8.2. The first electrical contact extends through the guide frame 9 into the guide groove 9.1, and the second electrical contact 8.5 extends through the guide frame 9 into the guide groove 9.1. The magnet 10 attracts the iron sheet 4.4 so that the iron sheet 4.4 overlaps the first and second electrical contacts 8.4 and 8.5, thereby opening and closing the rotary downward-pressing cylinder 8.2. The magnet 10 cooperates with the iron sheet 4.4 of the lower clamping piece 4.2 to achieve a coordinated reaction of the clamping mechanism 8. In the initial position, the iron sheet 4.4 is located above the magnet 10, and the magnet 10 attracts the iron sheet 4.4, so that the iron sheet 4.4 overlaps the first electrical contact 8.4 and the second electrical contact 8.5, so that the rotary downward pressing cylinder 8.2 turns on the control switch 8.3, and the rotary downward pressing cylinder 8.2 drives the pressing plate 8.1 to rotate horizontally above the aluminum tube and drives the pressing plate 8.1 to press the aluminum tube downward; when the tube threading clamp driving mechanism 5 drives the tube threading clamp 4 to extend into the aluminum tube, the magnet 10 attracts the iron sheet 4.4, and the adjusting block 5.3 keeps the clamping end of the tube threading clamp 4 in a closed state; when the tube threading clamp 4 penetrates into the aluminum tube, the clamping mechanism 8 remains in a clamping state. When the film is completed through the tube, the magnet 10 attracts the iron sheet 4.4 to overlap the first electrical contact 8.4 and the second electrical contact 8.5, and the rotary downward pressing cylinder 8.2 turns on the control switch 8.3 and releases the aluminum tube to facilitate the removal of the aluminum tube after the film is passed through the tube. There are multiple pressing mechanisms 8, and the rotating pressing cylinders 8.2 of the multiple pressing mechanisms 8 are connected in series and controlled to open and close by the control switch 8.3 to ensure that the pressing mechanism 8 presses the aluminum tube during the film passing through the tube.

[0061] Example 4: A tube-threading method of a film automatic tube-threading device according to Example 2, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the following steps are included in sequence:

[0062] Step 1: Wrap the film on the film rack 11.1 around the support tube 11.3 and stretch it through the film feed rack 11.22 to the end of the tube assembly rack 1 facing the film feed mechanism 11, and vertically stack the aluminum tube between the brackets 2.2 of the aluminum tube feed rack 2;

[0063] Step 2: Start the automatic film tube threading device. The push plate 3 pushes the aluminum tube at the bottom of the aluminum tube feeding rack 2 toward the side of the pushing groove 2.5 facing the tube threading assembly rack 1. The grabbing mechanism 7 grabs the pushed aluminum tube and places it into the assembly groove 1.1 of the tube threading assembly rack 1. At this time, the magnet 10 attracts the iron sheet 4.4 on the clamping plate 4.2. The iron sheet 4.4 overlaps the first electrical contact 8.4 and the second electrical contact 8.5. The downward pressure cylinder 8.2 is rotated to turn on the control switch 8.3, and the clamping mechanism clamps the two ends of the aluminum tube.

[0064] Step 3: The regulating block drives the cylinder 5.4 to drive the regulating block 5.3 to move toward the pipe assembly frame 1. The first electrical contact 8.4 and the second electrical contact 8.5 are disconnected. The clamping mechanism 8 remains in the clamping state. The regulating block 5.3 presses the upper clamping piece 4.1 onto the lower clamping piece 4.2, so that the clamping end of the pipe clamp 4 is closed. The driving mechanism of the movable seat 5.2 drives the movable seat 5.2 to move toward the pipe assembly frame 1, so that the pipe clamp 4 is inserted into the aluminum tube. The regulating block drives the cylinder 5.4 to drive the regulating block 5.3. The node block 5.3 is reset to open the clamping end of the tube-threading clamp 4, and the clamping end of the tube-threading clamp 4 passes through the aluminum tube to the discharge end of the film feeding mechanism 11. The adjustment block drives the cylinder 5.4 to drive the adjustment block 5.3 toward the tube-threading assembly frame 1 so that the clamping end of the tube-threading clamp 4 closes and grasps the film. The driving mechanism of the movable seat 5.2 drives the movable seat 5.2 to reset. The tube-threading clamp 4 clamps the film so that the film completely passes through the aluminum tube. The film cutting mechanism 6 cuts the film at the discharge end of the film feeding mechanism 11.

[0065] Step 4: The adjusting block drives the cylinder 5.4 to drive the adjusting block 5.3 to reset so that the clamping end of the tube threading clamp 4 opens, and the tube threading clamp 4 releases the film; at this time, the magnet 10 adsorbs the iron sheet 4.4 on the lower clamping sheet 4.2, and the iron sheet 4.4 overlaps the first electrical contact 8.4 and the second electrical contact 8.5. The cylinder 8.2 is rotated to press on the control switch 8.3, and the clamping mechanism releases the two ends of the aluminum tube, and the aluminum tube is taken out to realize automatic tube threading of the film.

[0066] The present invention has the following beneficial effects: it is applicable to large-scale production, has high efficiency compared to manual pipe threading, can operate uninterruptedly, has low production cost, and the quality of film pipe threading of each aluminum tube is stable. In addition, the automatic film pipe threading device has a stable structure and is easy to operate.

[0067] The above-described specific embodiments are only preferred embodiments of the present invention and are not intended to limit the specific implementation scope of the present invention. All equivalent changes made to the shape and structure of the present invention should be included in the protection scope of the present invention.

Claims

1. A film automatic tube threading device, characterized in that: include: A pipe assembly frame is provided with an assembly slot for placing the aluminum pipe; A clamping mechanism is provided at both ends of the pipe assembly frame. The clamping mechanism includes a clamping plate and a rotary downward pressing cylinder that drives the clamping plate to rotate horizontally and press downward. The clamping plate presses both ends of the aluminum tube onto the pipe assembly frame. The aluminum tube feeding mechanism includes an aluminum tube feeding rack and a pushing plate. The aluminum tube feeding mechanism and the tube threading assembly rack are sequentially distributed along the width direction of the assembly slot. The film tube insertion mechanism includes a tube insertion clamp and a tube insertion clamp driving mechanism for driving the tube insertion clamp to move, and further includes a guide frame, the guide frame being located at one end of the tube insertion assembly frame facing the tube insertion clamp, the guide frame being provided with a guide groove, the guide groove being connected to the assembly groove, the tube insertion clamp including an upper clamping piece and a lower clamping piece connected by a connecting portion, the upper clamping piece being bent upward at the connection with the connecting portion, and the upper clamping piece being elastically arranged above the lower clamping piece; The film feeding mechanism and the film tube threading mechanism are respectively located at both ends of the assembly groove in the length direction; a film cutting mechanism, which is located between the aluminum tube feeding mechanism and the film feeding mechanism; A material grabbing mechanism, which is located above the pipe threading assembly frame; A magnet is provided at the bottom of the guide groove, and one end of the lower clamping piece located in the guide groove is covered with an iron sheet. The clamping mechanism also includes a control switch, which is provided with a first electrical contact, and a second electrical contact is provided on the rotating downward pressing cylinder. The first electrical contact passes through the guide frame and extends into the guide groove, and the second electrical contact passes through the guide frame and extends into the guide groove. The magnet absorbs the iron sheet so that the iron sheet overlaps the first electrical contact and the second electrical contact to realize the opening and closing of the rotating downward pressing cylinder.

2. The automatic film tube threading device according to claim 1, characterized in that: A guide hole is provided on the side wall of the guide groove, and one end of the pipe clamp passes through the guide hole and is located in the guide groove.

3. The automatic film tube threading device according to claim 2, characterized in that: The pipe threading clamp driving mechanism includes a base plate, a movable seat and a movable seat driving mechanism for driving the movable seat to move are provided on the base plate, an adjusting block for pressing the pipe threading clamp and an adjusting block driving cylinder for driving the adjusting block to move are provided on the movable seat, the pipe threading clamp passes through the adjusting block and is connected to the movable seat, the movable seat is movably arranged on the base plate through a guide rail, and the adjusting block is movably arranged on the movable seat through a guide rail.

4. The automatic film tube threading device according to claim 3, characterized in that: The adjusting block is provided with an adjusting hole, the pipe clamp passes through the adjusting hole, and the thickness of the adjusting hole is equal to the sum of the thickness of the upper clamping piece and the thickness of the lower clamping piece.

5. The automatic film tube threading device according to claim 4, characterized in that: The aluminum tube feeding rack includes a base frame and brackets symmetrically arranged at both ends of the base frame, the brackets are provided with vertically distributed feeding troughs, the feeding troughs limit the vertical stacking of aluminum tubes, the lower end of the feeding trough is provided with a feeding port facing the side of the tube assembly rack, the base frame is provided with a pushing trough, the pushing trough is provided with a pushing port on the side opposite to the tube assembly rack, and one end of the pushing plate passes through the pushing port and is movably arranged in the pushing trough.

6. The automatic film tube threading device according to claim 5, characterized in that: The film feeding mechanism includes a film material rack and several film feeding racks. The film feeding rack is provided with a feeding hole. A support tube is provided in the feeding hole. The film feeding rack is sleeved on the support tube and distributed in sequence along the central axis of the support tube.

7. The automatic film tube threading device according to claim 2, 3, 4, 5 or 6, characterized in that: The film cutting mechanism comprises a clamping piece and a shearing knife, and also comprises a clamping piece driving mechanism for driving the clamping piece to clamp and a shearing knife driving mechanism for driving the shearing knife to open and close.

8. A tube threading method according to any one of claim 6, characterized in that: The steps are as follows: Step 1: Wrap the film on the film rack around the support tube and stretch it through the film feeding rack to the end of the tube assembly rack facing the film feeding mechanism, and stack the aluminum tube vertically between the brackets of the aluminum tube feeding rack; Step 2: Start the automatic film tube threading device. The push plate pushes the aluminum tube at the bottom of the aluminum tube feeding rack to the side of the pushing trough facing the tube threading assembly rack. The grabbing mechanism grabs the pushed aluminum tube and places it into the assembly slot of the tube threading assembly rack. The clamping mechanism clamps both ends of the aluminum tube. Step three: the adjusting block drives the air cylinder to drive the adjusting block to move toward the pipe-threading assembly frame, and the adjusting block presses the upper clamping piece onto the lower clamping piece, so that the clamping end of the pipe-threading clamp is closed, and the movable seat driving mechanism drives the movable seat to move toward the pipe-threading assembly frame, so that the pipe-threading clamp penetrates into the aluminum tube, and the adjusting block drives the air cylinder to drive the adjusting block to reset so that the clamping end of the pipe-threading clamp opens, and the clamping end of the pipe-threading clamp passes through the aluminum tube to reach the discharge end of the film feeding mechanism, and the adjusting block drives the air cylinder to drive the adjusting block to move toward the pipe-threading assembly frame so that the clamping end of the pipe-threading clamp closes and grabs the film, and the movable seat driving mechanism drives the movable seat to reset, and the pipe-threading clamp clamps the film so that the film completely passes through the aluminum tube, and the film cutting mechanism cuts the film at the discharge end of the film feeding mechanism; Step 4: The adjusting block drives the cylinder to drive the adjusting block to reset so that the clamping end of the tube clamp opens, the tube clamp releases the film, and takes out the aluminum tube, realizing automatic tube threading of the film.

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