Strip joining device and method

Abstract

This invention discloses a strip splicing device and method. A first feeding motor is mounted on a base, and its feeding wheel actively feeds material. The outer side of the feeding wheel forms a first feeding port. A movable plate is slidably mounted on the base, and a conveying channel is provided on the movable plate. The conveying channel includes an inlet and an outlet. When the inlet of the conveying channel is connected to the first feeding port, the movable plate is in a first position; when the inlet of the conveying channel is connected to a second feeding port, the movable plate is in a second position. A welding assembly is mounted on the conveying channel and is capable of welding the material on the conveying channel. A conveying motor actively conveys the material. A power component is mounted on the base and drives the movable plate to reciprocate between the first and second positions. This achieves continuous strip feeding.

Description

Technical Field

[0001] This invention belongs to the field of packaging equipment, and particularly relates to a tape splicing device and method. Background Technology

[0002] Plastic-coated steel strapping (also known as packaging strapping or binding strapping) is a key material for securing and transporting solar cell modules. It is essential to firmly connect the end of the exhausted plastic-coated steel strapping to the beginning of a new roll. In existing technologies, the material supply from the rolls is discontinuous: single-feeding-port equipment requires machine shutdown for material changes, with manual pulling of the new strapping to the connection station, taking an average of 3-5 minutes per instance, severely slowing down the production line cycle time. Summary of the Invention

[0003] The main objective of this invention is to provide a strip splicing device and method to achieve continuous strip supply.

[0004] The present invention achieves the above objectives through the following technical solutions:

[0005] A strip splicing device includes a base, a first feeding motor, a second feeding motor, a moving plate, a welding assembly, a conveying motor, and a power component. The first feeding motor is mounted on the base, and the feeding wheel of the first feeding motor can actively feed the material. The outer side of the feeding wheel of the first feeding motor is the first feeding port.

[0006] The second feeding motor is mounted on the base. The feeding wheel of the second feeding motor can actively feed materials. The outer side of the feeding wheel of the second feeding motor is the second feeding port. The second feeding port is arranged at an interval from the first feeding port.

[0007] The movable plate is slidably mounted on the base. The movable plate is provided with a conveying channel, which includes an inlet and an outlet. When the inlet of the conveying channel is connected to the first feed port, the movable plate is in the first position; when the inlet of the conveying channel is connected to the second feed port, the movable plate is in the second position.

[0008] The welding assembly is installed on the conveying channel and is capable of welding the materials on the conveying channel.

[0009] The conveyor motor is located between the welding assembly and the discharge port of the conveying channel, and the conveyor motor can actively convey materials; the power unit is located on the base, and the power unit can drive the moving plate to reciprocate between the first position and the second position.

[0010] Furthermore, the strip splicing device also includes a cutting component, a first detection channel, a first excess material sensor, a second detection channel, and a second excess material sensor. The cutting component is mounted on a moving plate and is located between the feed inlet of the conveying channel and the welding component. The cutting component is electrically connected to the conveying motor and power components. The cutting component is capable of cutting the material in the conveying channel.

[0011] The first detection channel is located behind the first feeding motor; the first excess material sensor is located on the first detection channel and is electrically connected to the cutting assembly; the second detection channel is located behind the second feeding motor; the second excess material sensor is located on the second detection channel and is electrically connected to the second feeding motor.

[0012] Furthermore, the strip splicing device also includes a first sensor and a second sensor. The first sensor is located at the first feed port and is electrically connected to the first feed motor; the second sensor is located at the second feed port and is electrically connected to the second feed motor.

[0013] Furthermore, a notch is made in the conveying channel, and the cutting assembly includes scissors and a cutting cylinder. The scissor blades are located at the notch in the conveying channel. The cylinder body of the cutting cylinder is fixed to the moving plate, and the piston rod of the cutting cylinder is connected to the scissors. The cutting cylinder can drive the scissors to cut, and the cutting cylinder is electrically connected to the conveying motor and power components.

[0014] Furthermore, a lower friction head is provided on the bottom surface of the conveying channel, and the welding assembly includes a vertical plate, a pressurizing cylinder, an upper friction head, two connecting rods, a drive arm, and a friction head drive mechanism; the vertical plate is fixed to the moving plate; the cylinder body of the pressurizing cylinder is connected to the upper part of the vertical plate, and the piston rod of the pressurizing cylinder is connected to the sleeve;

[0015] The top of the upper friction head is connected to the sleeve, and the friction surface of the upper friction head is perpendicular to the piston rod axis of the pressurized cylinder; the upper ends of the two connecting rods are hinged to the sleeve, and the lower ends are hinged to the side of the upper friction head, and the axis of the connecting rod hinge axis is parallel to the friction surface of the upper friction head.

[0016] One end of the drive arm is hinged to the upper friction head, and the hinge axis of the drive arm is aligned with the hinge axis of the connecting rod. The friction head drive mechanism is connected to the other end of the drive arm, and the friction head drive mechanism drives the upper friction head to reciprocate.

[0017] The welding assembly also includes a bushing, a compression spring, a limiting block, an upper pin, a lower pin, and a limiting component. The upper end of the bushing is fitted around the outer circumference of the sleeve, and the bushing and the sleeve form an axial movement and radial limiting fit. The bottom end of the bushing and the ball groove of the upper friction head are balls.

[0018] The compression spring is located between the bushing and the sleeve, with one end of the compression spring pressing against the sleeve and the other end pressing against the bushing;

[0019] The limiting block is fixed to the vertical plate. The limiting block is located between the piston rod of the pressurized cylinder and the upper friction head. The limiting block has a vertical hole for the sleeve to be accommodated. Waist holes are opened on both sides of the limiting block, and the waist holes are connected to the vertical holes.

[0020] The upper pin passes through the waist hole to hinge the upper end of the connecting rod to the sleeve, and the waist hole of the limiting block restricts the upper pin to move along the length of the waist hole.

[0021] The lower pin passes through the waist hole to connect the lower end of the connecting rod, the upper friction head and the drive arm. The axial directions of the lower pin and the upper pin are parallel to the friction surface of the upper friction head.

[0022] The limiting element is set on the conveying channel. The limiting element is located on one or both sides of the upper friction head, and the limiting element limits the conveying width of the conveying channel.

[0023] Furthermore, the strip splicing device also includes a trimming assembly disposed between the welding assembly and the discharge port of the conveying channel. The trimming assembly includes a side milling cylinder, a sliding plate, a side milling motor, a first side milling cutter and a second side milling cutter. The cylinder body of the side milling cylinder is fixed to the moving plate, and the extension and retraction direction of the piston rod of the side milling cylinder is perpendicular to the bottom surface of the conveying channel groove.

[0024] The slide plate is connected to the piston rod; the side milling motor housing is fixed to the slide plate, and the side milling motor includes two synchronously rotating shafts; the first side milling cutter is connected to one shaft of the side milling motor, and the length direction of the first side milling cutter is perpendicular to the bottom surface of the conveying channel groove; the second side milling cutter is connected to the other shaft of the side milling motor, and the second side milling cutter is perpendicular to the bottom surface of the conveying channel groove, and the distance between the cutting edges of the second side milling cutter and the first side milling cutter matches the width of the first belt.

[0025] Furthermore, the strip splicing device also includes a vertical milling assembly disposed between the welding assembly and the discharge port of the conveying channel. The vertical milling assembly includes an upper vertical plate, a first lifting plate, an upper milling motor, an upper milling cutter, and two pressure rollers. The lower part of the upper vertical plate is fixed to the surface of the moving plate. The first lifting plate and the upper vertical plate slide in a direction perpendicular to the bottom surface of the conveying channel groove. The housing of the upper milling motor is fixed to the first lifting plate.

[0026] The upper milling cutter is connected to the shaft of the upper milling motor, and the upper milling cutter is spaced apart from the bottom surface of the conveying channel groove;

[0027] Two pressure rollers are elastically connected to the first lifting plate. The two pressure rollers are located on both sides of the upper milling cutter. The two pressure rollers are arranged along the length of the conveying channel groove. The distance between the two pressure rollers is greater than the welding length between the tail of the first belt and the head of the second belt. The distance between the bottom edge of the pressure roller and the bottom surface of the conveying channel groove is less than the distance between the end face of the upper milling cutter and the bottom surface of the conveying channel groove.

[0028] The vertical milling assembly also includes a lower vertical plate, a second lifting plate, a lower milling motor, and a lower milling cutter. The upper part of the lower vertical plate is fixed to the back of the movable plate. The second lifting plate and the lower vertical plate are slidably fitted in a direction perpendicular to the bottom surface of the conveying channel groove. The housing of the lower milling motor is fixed to the second lifting plate. The lower milling cutter is connected to the shaft of the lower milling motor. The lower milling cutter and the bottom surface of the conveying channel groove are arranged at intervals. The length direction of the lower milling cutter and the upper milling cutter are consistent. A through hole is opened at the bottom of the conveying channel groove. The bottom surface of the groove on both sides of the through hole has an enlarged area to accommodate the pressure roller.

[0029] The present invention also provides a splicing method based on the aforementioned strip splicing device, comprising the following steps:

[0030] S10: The moving plate is in the first position, the feed inlet of the conveying channel on the moving plate is connected to the first feed port, and the first feed motor conveys the first belt on the first material roll forward;

[0031] S20: First roll feeding completed;

[0032] S30: The power unit drives the moving plate to move from the first position to the second position. The feed inlet of the conveying channel on the moving plate is connected to the second feed inlet. The head of the second belt is located at the second feed inlet, ready to connect with the first belt.

[0033] S40: The conveyor motor will transport the first belt a set distance so that the tail of the first belt is delivered to the welding station;

[0034] S50: The second feeding motor will convey the second belt a set distance so that the head of the second belt is conveyed to the welding station;

[0035] S60: The welding components are pressed together and the head of the second belt is welded to the tail of the first belt to form a welded part, thus completing the connection between the first belt and the second belt.

[0036] Furthermore, the connection method also includes the following steps.

[0037] S70: The moving plate is in the second position, the feed inlet of the conveying channel on the moving plate is connected to the second feed inlet, and the second feed motor conveys the second belt on the second material roll forward;

[0038] S80: Feeding of the second roll of material has ended;

[0039] S90: The power unit drives the moving plate to move from the second position to the first position. The feed inlet of the conveying channel on the moving plate is connected to the first feed inlet. The head of the first belt is located at the first feed inlet, ready to connect with the second belt.

[0040] S100: The conveyor motor will transport the second belt a set distance so that the tail of the second belt is delivered to the welding station;

[0041] S110: The first feeding motor conveys the first belt a set distance so that the head of the first belt is conveyed to the welding station;

[0042] S120: The welding components are pressed together and the head of the first belt and the tail of the second belt are welded together to complete the connection between the first belt and the second belt.

[0043] Furthermore, in the connection method, S20 includes S21 to S25. S21: The first excess material sensor does not detect the first strip, and the first excess material sensor transmits a signal to the cutting assembly;

[0044] S22: The cutting component moves to cut the first belt, and the cutting component transmits the cutting completion signal to the first feeding motor, the conveying motor, and the power component;

[0045] S23: The first feeding motor retracts the waste material according to the received cutting completion signal;

[0046] S24: Replace the first roll of material that has finished feeding with a new first roll of material, pass the first belt head on the new first roll of material through the residual material detection position, and the first feeding motor delivers the first belt head to the first feeding port.

[0047] S25: When the first sensor detects the first belt at the first feed port, the first sensor sends a signal to the first feed motor, and the first feed motor stops working.

[0048] Compared with the prior art, the present invention has the following technical effects:

[0049] The conveyor channel of the moving plate alternately connects to the first and second feed ports to achieve continuous supply of strip material and improve the production cycle of the production line. Attached Figure Description

[0050] Figure 1 This is a perspective view of the movable plate in the first position according to the present invention;

[0051] Figure 2 This is a perspective view of the movable plate in the second position according to the present invention;

[0052] Figure 3 for Figure 2 3D view of the mobile board and its components;

[0053] Figure 4 This is a top view of the plastic-steel belt splicing machine of the present invention;

[0054] Figure 5 This is a perspective view of the welding assembly of the present invention;

[0055] Figure 6 for Figure 5 Exploded view;

[0056] Figure 7 for Figure 5 A 3D view of the hidden limiting block;

[0057] Figure 8 for Figure 5 Side view;

[0058] Figure 9 for Figure 8 EE-directed sectional view;

[0059] Figure 10This is a perspective view of the other side of the welding assembly of the present invention;

[0060] Figure 11 This is a perspective view of the conveying channel and limiting component of the present invention.

[0061] Figure 12 This is a perspective view of the side milling assembly of the present invention;

[0062] Figure 13 for Figure 12 A 3D image hidden behind the top cover;

[0063] Figure 14 for Figure 13 The front view;

[0064] Figure 15 for Figure 14 FF section view;

[0065] Figure 16 This is a perspective view of the vertical milling assembly of the present invention;

[0066] Figure 17 for Figure 16 A 3D image hidden behind the top cover;

[0067] Figure 18 for Figure 17 A three-dimensional view of one side;

[0068] Figure 19 for Figure 17 A three-dimensional view of the mid-dorsal side;

[0069] Figure 20 for Figure 17 The front view;

[0070] Figure 21 for Figure 20 GG-direction sectional view in the middle;

[0071] Figure 22 for Figure 21 A schematic diagram showing the two end mills in the working position;

[0072] Figure 23 This is a rendering of the finished product after processing the tail of the first belt and the head of the second belt. Detailed Implementation

[0073] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0074] Example 1

[0075] like Figures 1 to 4As shown, a strip splicing device includes a base 1, a first feeding motor 14a, a second feeding motor 14b, a moving plate 20, a welding assembly 40, a conveying motor 71, and a power component 23. The first feeding motor 14a is mounted on the base 1. The feeding wheel of the first feeding motor 14a can actively feed materials. The outer side of the feeding wheel of the first feeding motor 14a is the first feeding port 10a.

[0076] The second feeding motor 14b is mounted on the base 1. The feeding wheel of the second feeding motor 14b can actively feed materials. The outer side of the feeding wheel of the second feeding motor 14b is the second feeding port 10b. The second feeding port 10b and the first feeding port 10a are arranged at intervals.

[0077] The movable plate 20 is slidably disposed on the base 1. The movable plate 20 is provided with a conveying channel 21, which includes an inlet 21a and an outlet 21b. When the inlet 21a of the conveying channel 21 is connected to the first feed port 10a, the movable plate 20 is in the first position; when the inlet 21a of the conveying channel 21 is connected to the second feed port 10b, the movable plate 20 is in the second position.

[0078] The welding assembly 40 is disposed on the conveying channel 21, and the welding assembly 40 is capable of welding the material on the conveying channel 21.

[0079] The conveyor motor 71 is located between the welding assembly 40 and the discharge port 21b of the conveying channel 21, and the conveyor motor 71 can actively convey materials.

[0080] The power component 23 is mounted on the base 1. The power component 23 can drive the movable plate 20 to reciprocate between the first position and the second position. The power component 23 can be a connecting cylinder.

[0081] The splicing method of the strip splicing device includes the following steps:

[0082] S10: As Figure 1 As shown, the movable plate 20 is in the first position, the feed inlet 21a of the conveying channel 21 on the movable plate 20 is connected to the first feed port 10a, and the first feed motor 14a conveys the first belt A1 on the first material roll forward.

[0083] S20: First roll feeding completed;

[0084] S30: The power component 23 drives the movable plate 20 to move from the first position to the second position along the M1 direction, such as... Figure 2 As shown, the inlet 21a of the conveying channel 21 on the movable plate 20 is connected to the second feed port 10b, and the head of the second belt A2 is located at the second feed port 10b, ready to connect with the first belt A1.

[0085] S40: The conveyor motor 71 conveys the first belt A1 a set distance so that the tail of the first belt A1 is conveyed to the welding station;

[0086] S50: The second feeding motor 14b conveys the second belt A2 a set distance so that the head of the second belt A2 is conveyed to the welding station;

[0087] S60: The welding assembly 40 presses and welds the head of the second belt A2 and the tail of the first belt A1 to form a welded part, thus completing the connection between the first belt A1 and the second belt A2.

[0088] S70: The second feeding motor 14b conveys the second belt A2 on the second material roll forward;

[0089] S80: Feeding of the second roll of material has ended;

[0090] S90: The power unit 23 drives the movable plate 20 to move from the second position to the first position. The feed inlet 21a of the conveying channel 21 on the movable plate 20 is connected to the first feed inlet 10a. The head of the first belt A1 is located at the first feed inlet 10a, ready to be connected to the second belt A2.

[0091] S100: The conveyor motor 71 conveys the second belt A2 a set distance so that the tail of the second belt A2 is conveyed to the welding station;

[0092] S110: The first feeding motor 14a conveys the first belt A1 a set distance so that the head of the first belt A1 is conveyed to the welding station;

[0093] S120: Welding assembly 40 presses and welds the head of the first belt A1 and the tail of the second belt A2 together, completing the connection between the first belt A1 and the second belt A2.

[0094] The present invention achieves continuous supply of strip material to the next packaging process by alternately connecting the conveying channel 21 of the moving plate 20 to the first feeding port 10a and the second feeding port 10b, thereby significantly improving the production cycle of the packaging production line.

[0095] like Figure 4As shown, in the strip splicing device of the present invention, the structure for supplying the first strip A1 and the second strip A2 includes a partition 11, a support shaft 12, a first material carrier roller 13a and a second material carrier roller 13b. The partition 11 is fixed to the base 1. The support shaft 12 passes through the partition 11, and the middle part of the support shaft 12 is fixed to the partition 11. The first material carrier roller 13a is located on one side of the partition 11 and is disposed on the support shaft 12. The first material carrier roller 13a can rotate around the axis O′ of the support shaft 12 and is used for the arrangement of the first material roll. The second material carrier roller 13b is located on the other side of the partition 11 and is disposed on the support shaft 12. The second material carrier roller 13b can rotate around the first rotation axis O′ of the support shaft 12 and is used for the arrangement of the second material roll.

[0096] Example 2

[0097] Based on Embodiment 1, the strip splicing device of this embodiment further includes a cutting component 30, a first detection channel 151a, a first excess material sensor 152a, a second detection channel 151b, and a second excess material sensor 152b. The cutting component 30 is disposed on the moving plate 20 and is located between the inlet 21a of the conveying channel 21 and the welding component 40. The cutting component 30 is electrically connected to the conveying motor 71 and the power component 23. The cutting component 30 can cut the material in the conveying channel 21.

[0098] The first detection channel 151a is located behind the first feeding motor 14a; the first excess material sensor 152a is located on the first detection channel 151a and is electrically connected to the cutting assembly 30.

[0099] The second detection channel 151b is located behind the second feeding motor 14b; the second residual material sensor 152b is located on the second detection channel 151b and is electrically connected to the second feeding motor 14b.

[0100] It should be noted that in this embodiment, the cutting component 30 is electrically connected to the conveying motor 71 and the power component 23, but the two components are not directly connected. Instead, the cutting component 30 is indirectly connected to the conveying motor 71 and the power component 23 through a controller. Similarly, in all embodiments of this invention involving electrical connections, the two components are indirectly connected through a controller to transmit information.

[0101] S20 includes S21 to S23.

[0102] S21: The first excess material sensor 152a does not detect the first strip A1, and the first excess material sensor 152a transmits a signal to the cutting assembly 30;

[0103] S22: The cutting component 30 operates to cut the first belt A1. The cutting component 30 transmits the cutting completion signal to the first feeding motor 14a, the conveying motor 71, and the power component 23.

[0104] S23: The first feeding motor 14a retracts the waste material according to the received cutting completion signal.

[0105] In S30, the power unit 23 drives the moving plate 20 from the first position to the second position according to the received cutting completion signal.

[0106] In S40, the conveyor motor 71, based on the received cutting completion signal, conveys the first belt A1 a set distance so that the tail of the first belt A1 is conveyed to the welding station.

[0107] After the first belt A1 is fed, the present invention sets the cutting component 30 to cut the first belt A1. The conveying distance of the conveying motor 71 is set with the cutting position as the reference point. That is, the conveying distance of the conveying motor 71 is the distance from the cutting position to the welding station. In this way, the tail of the first belt A1 can be accurately conveyed to the welding station of the welding component 40, completing the welding preparation of the tail of the first belt A1 and improving the welding quality of the welding component 40.

[0108] S80 includes S81 to S83.

[0109] S81: The second excess material sensor 152b did not detect the second strip A2, and the second excess material sensor 152b transmitted a signal to the cutting assembly 30;

[0110] S82: The cutting component 30 operates to cut the second belt A2. The cutting component 30 transmits the cutting completion signal to the second feeding motor 14b, the conveying motor 71, and the power component 23.

[0111] S83: The second feeding motor 14b retracts the waste material according to the received cutting completion signal.

[0112] In S90, the power unit 23 drives the moving plate 20 from the second position to the first position according to the received cutting completion signal.

[0113] In S100, the conveyor motor 71, based on the received cutting completion signal, conveys the first belt A1 a set distance so that the tail of the first belt A1 is conveyed to the welding station.

[0114] Similarly, after the second belt A2 is fed, the present invention sets the cutting component 30 to cut the second belt A2. The conveying distance of the conveying motor 71 is set with the cutting position as the reference point. That is, the conveying distance of the conveying motor 71 is the distance from the cutting position to the welding station. In this way, the tail of the second belt A2 can be accurately conveyed to the welding station of the welding component 40 to complete the welding preparation of the tail of the second belt A2 and improve the welding quality of the welding component 40.

[0115] Example 3

[0116] Based on Embodiment 1 or Embodiment 2, the strip splicing device of this embodiment further includes a first sensor 16a and a second sensor 16b. The first sensor 16a is disposed at the first feed port 10a and is electrically connected to the first feed motor 14a; the second sensor 16b is disposed at the second feed port 10b and is electrically connected to the second feed motor 14b.

[0117] Following S23, the connection methods also include S24 to S25.

[0118] S24: The worker replaces the first roll of material that has finished feeding with a new first roll of material, and passes the head of the first belt A1 on the new first roll of material through the residual material detection position. The first feeding motor 14a transports the head of the first belt A1 to the first feeding port 10a.

[0119] S25: When the first sensor 16a detects the first belt A1 at the first feed port 10a, the first sensor 16a sends a signal to the first feed motor 14a, and the first feed motor 14a stops working.

[0120] When the worker pulls the head of the first strip A1 on the new first roll through the residual material detection channel, the first residual material sensor 152a detects the first strip A1 and the first feeding motor 14a starts to work.

[0121] The worker inserts the head of the first belt A1 between the drive wheel and the pressure wheel of the first feeding motor 14a. The first feeding motor 14a transports the head of the first belt A1 to the first feeding port 10a. When the first sensor 16a detects the first belt A1 at the first feeding port 10a, the first sensor 16a sends a signal to the first feeding motor 14a, and the first feeding motor 14a stops working. At this time, the head of the first belt A1 uses the photoelectric detection position of the first sensor 16a as a reference point.

[0122] Subsequently, in S110, the first feeding motor 14a of the present invention uses the photoelectric detection position of the first sensor 16a as a reference point. The set distance that the first feeding motor 14a conveys the first belt A1 is the distance between the photoelectric detection position of the first sensor 16a and the welding position of the welding assembly 40. The first feeding motor 14a can accurately convey the head of the first belt A1 to the welding station. The head of the first belt A1 overlaps with the tail of the second belt A2. The overlap position of the head of the first belt A1 and the tail of the second belt A2 at the welding station is also accurate, which significantly improves the welding quality of the welding assembly 40 on the head of the first belt A1 and the tail of the second belt A2.

[0123] Following S83, connection methods also include S84 to S85.

[0124] S84: The worker replaces the second roll of material that has finished feeding with a new second roll of material, and passes the head of the second belt A2 on the new second roll of material through the residual material detection position. The second feeding motor 14b transports the head of the second belt A2 to the second feeding port 10b.

[0125] S85: When the second sensor 16b detects the second belt A2 at the second feed port 10b, the second sensor 16b sends a signal to the second feed motor 14b, and the second feed motor 14b stops working.

[0126] Similarly, in the next round of connection S50, the second feeding motor 14b of the present invention uses the photoelectric detection position of the second sensor 16b as the reference point. The set distance that the second feeding motor 14b conveys the second belt A2 is the distance between the photoelectric detection position of the second sensor 16b and the welding position of the welding assembly 40. The second feeding motor 14b can accurately convey the head of the second belt A2 to the welding station. The head of the second belt A2 overlaps with the tail of the first belt A1. The overlap position of the head of the second belt A2 and the tail of the first belt A1 at the welding station is also accurate, which significantly improves the welding quality of the welding assembly 40 on the head of the second belt A2 and the tail of the first belt A1.

[0127] The first sensor 16a, the second sensor 16b, the first residual material sensor 152a, and the second residual material sensor 152b mentioned above are all photoelectric sensors.

[0128] Example 4

[0129] Based on Embodiment 1, in this embodiment, welding assembly 40 welds the first band A1 and the second band A2 to form a welded part. The thickness H3 of the welded part satisfies the condition H3 = K1·(H1 + H2), 0.55≤K1≤0.9; where K1 is the welding thickness reduction coefficient, H1 is the thickness of the first band A1, and H2 is the thickness of the second band A2.

[0130] Vertical milling is performed on the surface and back of the welded part. The thickness H4 of the welded part after vertical milling satisfies the condition H4 = K2·H3, and 0.5·(H1+H2)≤H4<H3, 0.6≤K2≤0.9, where K2 is the vertical milling thickness reduction coefficient.

[0131] First, moderate welding pressure maintains the thickness of the welded part at H3 = K1·(H1 + H2), 0.55≤K1≤0.9. Not only is a suitable amount of semi-molten material retained between the first band A1 and the second band A2, but only a small portion of the semi-molten material is extruded into the welding area. By limiting the melting depth between the first band A1 and the second band A2, the welding quality of the first band A1 and the second band A2 is ensured, and the welding strength of the first band A1 and the second band A2 meets the requirements.

[0132] Secondly, the first strip A1 and the second strip A2 do not need to be over-melted, which reduces the friction welding time and improves the feeding efficiency of the strip.

[0133] Third, only a small amount of the semi-molten material in the welded part is extruded, and the width of the welded part is small. The first band A1 and the second band A2 after welding can not only be conveyed to the next process normally, but also generate less waste material for the next process to trim the two sides of the welded part.

[0134] Fourth, since this embodiment does not require excessive melting, the two friction heads of the friction welding can be smoothly and normally separated, avoiding the welded part after excessive melting from sticking to the friction teeth of the two friction heads after cooling, thus ensuring that the welded strip can be transported normally.

[0135] Fifth, by milling the excess material on the surface and back of the welded part of the strip, the thickness of the welded part after vertical milling is H4 = K2·H3 and 0.5·(H1+H2)≤H4<H3, 0.6≤K2≤0.9. The strip after vertical milling can be smoothly supplied to the next strip forming machine, while ensuring that the tensile strength of the strip meets the requirements. In addition, the vertical milling on both sides of the welded part can also disperse the welding stress of the welded part.

[0136] After welding the 40 pairs of materials, a pressure F is maintained on the welded part. The range of the holding pressure is 50 N ≤ F ≤ 2000 N. Specifically, F can be 60 N, 70 N, 80 N, 90 N, 100 N, 110 N, 120 N, 130 N, 140 N, 150 N, 160 N, 170 N, 180 N, 190 N, 200 N, 210 N, 220 N, 230 N, 240 N, 250 N, 260 N, 270 N, 280 N, 290 N, 300 N, 400 N, 500 N, 600 N, 700 N, 800 N, 900 N, 1000 N, 1100 N, 1200 N, 1300 N, 1400 N, or 1500 N.

[0137] The pressure holding time range is 0.5S≤t≤10S, where t can be 1S, 1.5S, 2S, 2.5S, 3S, 3.5S, 4S, 4.5S, 5S, 5.5S, 6S, 6.5S, 7S, 7.5S, 8S, 8.5S, 9S, or 9.5S.

[0138] The preferred holding pressure F ranges from 100N to 500N, and the corresponding holding time t ranges from 1S to 5S. This ensures the welding quality of the first and second bands while shortening the welding time and significantly improving welding efficiency.

[0139] Specifically, the pressure F and the holding time t satisfy the following condition: 100 N·s ≤ F·t ≤ 3000 N·s.

[0140] F·t can specifically be 120 N·s, 140 N·s, 160 N·s, 180 N·s, 200 N·s, 210 N·s, 220 N·s, 230 N·s, 240 N·s, 250 N·s, 260 N·s, 270 N·s, 280 N·s, 290 N·s, 300 N·s, 400 N·s, 500 N·s, 600 N·s , 700N·s, 800N·s, 900N·s, 1000N·s, 1100N·s, 1200N·s, 1300N·s, 1400N·s, 1500N ·s, 1600N·s, 1700N·s, 1800N·s, 2000N·s, 2200N·s, 2400N·s, 2600N·s, 2800N·s.

[0141] The preferred pressure F and holding time t satisfy 200 N·s ≤ F·t ≤ 2000 N·s; a further preferred one is 200 N·s ≤ F·t ≤ 1000 N·s.

[0142] By controlling the holding pressure F and the holding time t, not only is an appropriate amount of molten layer retained between the first strip A1 and the second strip A2, but the holding time after the first strip A1 and the second strip A2 are fused is t, thereby improving the fusion strength between the first strip A1 and the second strip A2.

[0143] The following uses the materials and dimensions of the first band A1 and the second band A2 as examples to illustrate the specific technical parameters of the welding assembly 40 and the milling assembly 60.

[0144] Both the first strip A1 and the second strip A2 are made of PET material. The thickness H1 of the first strip A1 is 0.7mm and the width is 15±0.2mm. The thickness H2 of the second strip A2 is 0.7mm and the width is 15±0.2mm. The maximum tensile strength that the first strip A1 and the second strip A2 can withstand is 4200N.

[0145] The welding motor speed is 1500-4000 rpm, the welding time is 1-5 seconds, the holding time t is 2-10 seconds, and the holding pressure F is 100-500 N. The misalignment distance between the tail of the first belt A1 and the head of the second belt A2 after overlapping is 0-1.5 mm.

[0146] The thickness H3 of the welded portion formed by welding the first band A1 and the second band A2 is 1-1.2 mm; the length L of the welded portion is 12-17.5 mm.

[0147] The thickness H4 of the welded parts after milling of the vertical milling assembly 60 is 0.8-0.96mm.

[0148] The welding motor speed is 2500 rpm, the welding time is 3 seconds, the holding time t is 3 seconds, and the thickness of the welded part is 1.1 mm. After vertical milling the welded parts of the first band A1 and the second band A2, the maximum tensile force that the welded part can withstand is tested. See Table 1 for the tensile force test table of different welded part thicknesses after vertical milling.

[0149]

[0150] When the thickness of the welded part after vertical milling is 0.8mm, the average value of the maximum tensile force that the welded part can withstand is 1776.4N, and the maximum and minimum tensile forces are 2011N and 1548N, respectively.

[0151] When the thickness of the welded part after vertical milling is 0.85mm, the average value of the maximum tensile force that the welded part can withstand is 1810.5N, and the maximum and minimum tensile forces are 1931N and 1603N, respectively.

[0152] When the thickness of the welded part after vertical milling is 0.9mm, the average value of the maximum tensile force that the welded part can withstand is 1969.8N, and the maximum and minimum tensile forces are 2372N and 1562N, respectively.

[0153] Example 5

[0154] Based on Embodiment 1, this embodiment describes the welding assembly 40, the trimming assembly 50, and the milling assembly 60.

[0155] The following is combined with Figures 5 to 11 The welding assembly 40 of this embodiment will be described. A lower friction head 22 is provided at the bottom of the conveying channel 21. The welding assembly 40 includes a vertical plate 41, a pressurizing cylinder 42, an upper friction head 43, two connecting rods 44, a drive arm 45, and a friction head drive mechanism. The vertical plate 41 is fixed to the moving plate 20.

[0156] The cylinder body of the pressurizing cylinder 42 is connected to the upper part of the vertical plate 41, and the piston rod of the pressurizing cylinder 42 is connected to the sleeve 421;

[0157] The top of the upper friction head 43 is connected to the sleeve 421, and the friction surface of the upper friction head 43 is perpendicular to the piston rod axis of the pressurized cylinder 42; the upper ends of the two connecting rods 44 are hinged to the sleeve 421, and the lower ends are hinged to the side of the upper friction head 43, and the axis of the hinge shaft of the connecting rods 44 is parallel to the friction surface of the upper friction head 43.

[0158] One end of the drive arm 45 is hinged to the upper friction head 43, and the hinge axis of the drive arm 45 is aligned with the hinge axis of the connecting rod 44; the friction head drive mechanism is connected to the other end of the drive arm 45, and the friction head drive mechanism drives the upper friction head 43 to reciprocate.

[0159] By setting two connecting rods 44 with their ends hinged to the sleeve 421 and the upper friction head 43 respectively, the upper friction head 43 can reciprocate stably. In addition, the pressure cylinder 42 applies pressure to the upper friction head 43. The pressure cylinder 42 applies pressure in two working processes: first, during the friction welding process of the upper friction head 43, and second, after the upper friction head 43 finishes welding, the pressure is maintained, thereby improving the welding quality of the welding assembly 40.

[0160] The welding assembly 40 also includes a bushing 422 and a compression spring 423. The upper end of the bushing 422 is sleeved on the outer periphery of the sleeve 421. The bushing 422 and the sleeve 421 form an axial movement and radial limiting fit. There are balls (not shown in the figure) between the bottom end of the bushing 422 and the ball groove of the upper friction head 43. The compression spring 423 is located between the bushing 422 and the sleeve 421. One end of the compression spring 423 is pressed on the sleeve 421 and the other end is pressed on the bushing 422.

[0161] During the friction welding process of the upper friction head 43, the drive arm 45 drives the upper friction head 43 to reciprocate along the X direction. The top of the upper friction head 43 has a ball groove, and the length direction of the ball groove is consistent with the movement direction of the drive arm 45. The ball groove at the top of the upper friction head 43 and the bottom of the bushing 422 are balls. The movement direction of the bushing 422 is only the length direction of the piston rod of the pressurizing cylinder 42. The pressurizing cylinder 42 transmits pressure through the bushing 422 and the balls.

[0162] Pressure is transmitted through the connecting rods 44 on both sides of the upper friction head 43 and the balls under the bushing 422, which prevents the upper friction head 43 from rotating too much around the lower hinge axis, ensuring that the pressure of the upper friction head 43 can be evenly distributed and improving the welding quality.

[0163] During the downward pressing of the upper friction head 43, the compression spring 423 between the bushing 422 and the sleeve 421 can provide buffering to prevent the upper friction head 43 from hard impacting and damaging the strip or the lower friction head 22.

[0164] The welding assembly 40 also includes a limiting block 46, an upper pin 47 and a lower pin 48. The limiting block 46 is fixed to the vertical plate 41. The limiting block 46 is located between the piston rod of the pressurizing cylinder 42 and the upper friction head 43. The limiting block 46 has a vertical hole 461 for the sleeve 421 to be accommodated. Waist holes 462 are opened on both sides of the limiting block 46, and the waist holes 462 are connected to the vertical hole 461.

[0165] The upper pin 47 passes through the waist hole 462 and hinges the upper end of the connecting rod 44 to the sleeve 421. The waist hole 462 of the limiting block 46 limits the movement of the upper pin 47 along the length of the waist hole 462. The lower pin 48 passes through the waist hole 462 and hinges the lower end of the connecting rod 44, the upper friction head 43 and the drive arm 45. The axial directions of the lower pin 48 and the upper pin 47 are parallel to the friction surface of the upper friction head 43.

[0166] By setting a limit block 46 to fix it to the upright plate 41, and starting a vertical hole 461 in the middle of the limit block 46, it plays a guiding role for the sleeve 421, ensuring vertical movement accuracy, reducing uneven wear, and improving welding consistency.

[0167] The waist holes 462 on both sides of the limiting block 46 can restrict the movement path of the upper pin 47, ensure the precise movement trajectory of the connecting rod 44, and improve welding stability.

[0168] The outer diameter of the sleeve 421 matches the inner diameter of the vertical hole 461, and the sleeve 421 moves along the length of the vertical hole 461. During the high-frequency vibration of the upper friction head 43, the limiting block 46 can restrict the radial position of the sleeve 421, which not only improves the stability of the entire welding assembly 40, but also prevents the pressure cylinder 42 from being subjected to bending moment during the operation of the upper friction head 43 driven by the drive arm 45, thus improving the service life of the pressure cylinder 42.

[0169] The friction head drive mechanism includes a reduction gearbox 491 and a welding motor 492. The reduction gearbox 491 is fixed to the moving plate 20 and includes a power input end and a power output end. The power output end is connected to the drive arm 45. The shaft of the welding motor 492 is connected to the power input end of the reduction gearbox 491. The welding motor 492 drives the upper friction head 43 to reciprocate through the reduction gearbox 491 and the drive arm 45.

[0170] The materials to be welded are the first strip A1 and the second strip A2 stacked together. The friction surfaces of the upper friction head 43 and the lower friction head 22 are provided with protrusions. The protrusions of the upper friction head 43 and the lower friction head 22 can be inserted into the stacked first strip A1 and the second strip A2 respectively. In this way, the relative position of the upper friction head 43 and the first strip A1 is determined, and the relative position of the lower friction head 22 and the second strip A2 is fixed. The first strip A1 and the second strip A2 are subjected to high-frequency friction to ensure the welding quality of friction welding.

[0171] like Figure 11As shown, the conveying channel 21 includes a conveying trough 211, and a top cover 212 is provided on the conveying trough 211. The welding assembly 40 also includes a limiting member 80, which is disposed on the top cover 212. The limiting member 80 is located on one or both sides of the upper friction head 43, and the limiting member 80 limits the conveying width of the conveying channel 21.

[0172] The conveying trough 211 and the upper cover 212 together form a conveying channel 21 for the strip, and a limiting member 80 is provided on the upper cover 212. The limiting member 80 can constrain the position of the strip, prevent the upper and lower strips from misaligning during welding, and improve the welding quality.

[0173] The limiting component 80 includes limiting plates 81 and limiting posts 82. One end of the two limiting plates 81 is hinged to the upper cover 212, and the upper ends of the two limiting posts 82 are fixed to the other ends of the limiting plates 81. The limiting posts 82 are located within the conveying channel 21, and the two limiting posts 82 can be adjusted along the width direction of the conveying channel 21. The adjustable spacing between the two limiting posts 82 can accommodate strips of different widths, thus broadening the applicability of the welding assembly 40.

[0174] The following is combined with Figures 12 to 15 The trimming assembly 50 includes a side milling motor 51, a first side milling cutter 52, a second side milling cutter 53, and a side milling drive mechanism. The side milling motor 51 includes two synchronously rotating shafts.

[0175] The first side milling cutter 52 is connected to a shaft of the side milling motor 51. The first side milling cutter 52 is located on one side of the conveying channel 21, and the length direction of the first side milling cutter 52 is perpendicular to the bottom surface of the groove of the conveying channel 21.

[0176] The second side milling cutter 53 is connected to another shaft of the side milling motor 51. The second side milling cutter 53 is located on the other side of the conveying channel 21. The second side milling cutter 53 is parallel to the first side milling cutter 52. The distance between the cutting edges of the second side milling cutter 53 and the first side milling cutter 52 in the direction perpendicular to the conveying direction of the strip is consistent with the width of the strip.

[0177] The side milling drive mechanism is connected to the housing of the side milling motor 51. The side milling drive mechanism can drive the side milling motor 51 to reciprocate along the bottom surface of the groove perpendicular to the conveying channel 21.

[0178] The spacing between the first side milling cutter 52 and the second side milling cutter 53 is matched with the width of the strip. The sides of the welded joint of the two plastic steel strips are milled, and the milled plastic steel strip can be supplied normally to the packaging process.

[0179] The side milling drive mechanism includes a side milling cylinder 54 and a slide plate 55. The cylinder body of the side milling cylinder 54 is fixed to the moving plate 20, and the extension and retraction direction of the piston rod of the side milling cylinder 54 is perpendicular to the bottom surface of the conveying channel 21. One side of the slide plate 55 is slidably engaged with the cylinder body of the side milling cylinder 54, and the slide plate 55 is connected to the piston rod of the side milling cylinder 54.

[0180] The cylinder body of the side milling cylinder 54 has a guide rail, and the guide groove of the slide plate 55 directly matches the guide rail on the cylinder body. The trimming assembly 50 has a high degree of integration.

[0181] By matching the spacing of the first and second side milling cutters to the strip width, the parallelism of the strip's welded edges is ensured, achieving precise trimming. Using two side milling cutters, a single milling operation can trim both sides of the strip, improving trimming efficiency.

[0182] In addition, the waste particles milled from both sides of the welding section are small, which prevents the waste from getting stuck on the conveying channel 21 and ensures that the strip can be conveyed normally on the conveying channel 21.

[0183] The following is combined with Figures 16 to 22 The vertical milling assembly 60 is described below. The vertical milling assembly 60 includes an upper vertical plate 61a, a first lifting plate 62a, an upper milling motor 63a, an upper milling cutter 64a, and two pressure rollers 65. The lower part of the upper vertical plate 61a is fixed to the surface of the moving plate 20.

[0184] The first lifting plate 62a and the upper vertical plate 61a slide in a direction perpendicular to the bottom surface of the conveying channel 21; the housing of the upper milling motor 63a is fixed to the first lifting plate 62a; the upper milling cutter 64a is connected to the shaft of the upper milling motor 63a, and the upper milling cutter 64a is spaced apart from the bottom surface of the conveying channel 21.

[0185] Two pressure rollers 65 are elastically connected to the first lifting plate 62a. The two pressure rollers 65 are located on both sides of the upper milling cutter 64a. The two pressure rollers 65 are arranged along the length of the conveying channel 21. The distance between the bottom edge of the pressure roller 65 and the bottom surface of the conveying channel 21 is less than the distance between the end face of the upper milling cutter 64a and the bottom surface of the conveying channel 21.

[0186] When the upper milling cutter 64a is not working, the distance between the bottom edge of the pressure roller 65 and the bottom surface of the conveying channel 21 groove is less than the distance between the end face of the upper milling cutter 64a and the bottom surface of the conveying channel 21 groove.

[0187] During the operation of this invention, the first lifting plate 62a drives the two pressure rollers 65 and the upper milling cutter 64a to descend synchronously. After the two pressure rollers 65 press against both sides of the welded part, the first lifting plate 62a drives the upper milling cutter 64a to continue descending. At this time, the relative positions of the two pressure rollers 65 and the conveying channel 21 remain unchanged, the springs of the pressure rollers 65 are compressed, and the upper milling cutter 64a descends to achieve milling of the surface of the welded part. Vertical milling is performed on one side of the welded part, thus achieving surface thickness reduction of the welded part.

[0188] First, the two pressure rollers 65 elastically press the strip on both sides of the welding part against the bottom surface of the conveying channel 21, preventing the welding part from shifting on the conveying channel 21 during the milling process on one side of the strip, thus enabling precise milling and thinning of the welding part.

[0189] Secondly, during the process of pressing the two pressure rollers 65 down onto the bottom surface of the conveying channel 21, the two pressure rollers 65 can elastically extend and retract to adapt to different specifications of strip thickness.

[0190] Third, the pressure roller 65 elastically clamps the strip, which can absorb the vibration of the entire vertical milling assembly 60 during milling and prevent high-frequency vibration from affecting the connection strength of the various components of the vertical milling assembly 60.

[0191] Fourth, the distance between the two pressure rollers 65 is greater than the welding length between the tail of the first belt A1 and the head of the second belt A2, so that the upper milling cutter 64a can work normally.

[0192] The vertical milling assembly 60 also includes a lower vertical plate 61b, a second lifting plate 62b, a lower milling motor 63b, and a lower milling cutter 64b. The upper part of the lower vertical plate 61b is fixed to the back of the moving plate 20. The second lifting plate 62b and the lower vertical plate 61b are slidably engaged in a direction perpendicular to the bottom surface of the conveying channel 21. The housing of the lower milling motor 63b is fixed to the second lifting plate 62b. The lower milling cutter 64b is connected to the shaft of the lower milling motor 63b. The lower milling cutter 64b is spaced apart from the bottom surface of the conveying channel 21. The length direction of the lower milling cutter 64b is consistent with that of the upper milling cutter 64a.

[0193] If only one side of the weld is milled in the thickness direction, the unmelted normal strip of the weld will be removed, which will affect the tensile strength of the weld.

[0194] like Figure 20 and Figure 21 As shown, the upper milling cutter 64a and the lower milling cutter 64b move along the Z1 and Z2 directions respectively, as... Figure 22 As shown, the upper milling cutter 64a and the lower milling cutter 64b work together to mill the excess material on the surface and back of the strip welded part. The thickness uniformity of the welded part reaches ±0.1mm. The above-mentioned solution of the present invention mills both sides of the welded part, that is, it realizes the simultaneous reduction of the thickness of the surface and back of the welded part, avoiding affecting the tensile strength of the welded part. The simultaneous processing of the strip welded part on both sides not only improves the processing efficiency, but more importantly, it ensures the tensile strength of the strip welded part.

[0195] The bottom of the conveying channel 21 has a through hole, and the bottom surface of the channel on both sides of the through hole has an enlarged area. The enlarged area is the area on the conveying channel that can accommodate the pressure roller 65. The area where the pressure roller 65 presses down against the conveying channel is the enlarged area.

[0196] The vertical milling assembly 60 also includes an upper slide rail, an upper slide block, and an upper cylinder 66a. The upper slide rail is fixed to the surface of the upper vertical plate 61a, and the length direction of the upper slide rail is perpendicular to the axial direction of the upper milling cutter 64a.

[0197] The upper slider is fixed to the first lifting plate 62a, and the upper slider slides in conjunction with the upper slide rail; the cylinder body of the upper cylinder 66a is fixed to the back of the upper vertical plate 61a, the piston rod of the upper cylinder 66a is connected to the first lifting plate 62a, and the length direction of the piston rod of the upper cylinder 66a is parallel to the length direction of the upper slide rail.

[0198] The vertical milling assembly 60 also includes a lower slide rail, a lower slide block, and a lower cylinder 66b. The lower slide rail is fixed to the surface of the lower vertical plate 61b, and the length direction of the lower slide rail is perpendicular to the axial direction of the lower milling cutter 64b.

[0199] The lower slider is fixed to the second lifting plate 62b, and the lower slider slides in conjunction with the lower slide rail; the cylinder body of the lower cylinder 66b is fixed to the back of the lower vertical plate 61b, the piston rod of the lower cylinder 66b is connected to the second lifting plate 62b, and the length direction of the piston rod of the lower cylinder 66b is parallel to the length direction of the lower slide rail.

[0200] The vertical milling assembly 60 also includes an upper damper 67a and a lower damper 67b. The upper damper 67a is fixed to the movable plate 20, and the head of the upper damper 67a is located on the descending path of the first lifting plate 62a. The lower damper 67b is fixed to the movable plate 20, and the head of the lower damper 67b is located on the ascending path of the second lifting plate 62b.

[0201] The vertical milling assembly 60 also includes a material collection box 68 and a waste pipe 69. The material collection box 68 is located on the outer periphery of the lower milling cutter 64b, and a discharge port is opened on one side of the material collection box 68. One end of the waste pipe 69 is connected to the discharge port of the material collection box 68, and the other end is connected to a negative pressure source.

[0202] The conveying channel 21 includes a conveying trough 211 and an upper cover 212. The conveying trough 211 is disposed on the moving plate 20. The upper cover 212 covers the conveying channel 21. The upper cover has an air blowing hole 213. The air blowing hole is located on one side of the upper milling cutter 64a. The air blowing hole 213 is connected to the positive pressure source through a pipeline.

[0203] Example 6

[0204] This embodiment is a plastic-coated steel strip splicing machine, including the aforementioned strip splicing device or strip splicing method. For example... Figure 23 The image shows the effect after the tail of the first belt A1 and the head of the second belt A2 are welded, trimmed, and milled by a plastic steel belt splicing machine.

[0205] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A strip splicing device, characterized in that, include: Base; The first feeding motor is mounted on the base. The feeding wheel of the first feeding motor can actively feed materials. The outer side of the feeding wheel of the first feeding motor is the first feeding port. The second feeding motor is mounted on the base. The feeding wheel of the second feeding motor can actively feed materials. The outer side of the feeding wheel of the second feeding motor is the second feeding port. The second feeding port is arranged at a distance from the first feeding port. A movable plate is slidably mounted on a base. A conveying channel is provided on the movable plate. The conveying channel includes an inlet and an outlet. When the inlet of the conveying channel is connected to the first feed port, the movable plate is in a first position. When the inlet of the conveying channel is connected to the second feed port, the movable plate is in a second position. A welding assembly is disposed on the conveying channel, and the welding assembly is capable of welding materials on the conveying channel; A conveyor motor is disposed between the welding assembly and the discharge port of the conveying channel, and the conveyor motor is capable of actively conveying materials; A power component, which is disposed on the base, is capable of driving the movable plate to reciprocate between a first position and a second position; A trimming assembly is disposed between the welding assembly and the material outlet of the conveying channel. The trimming assembly includes a side milling motor and a first side milling cutter. The first side milling cutter is connected to a rotating shaft of the side milling motor. The first side milling cutter is located on one side of the conveying channel, and the length direction of the first side milling cutter is perpendicular to the bottom surface of the conveying channel groove. A vertical milling assembly is disposed between the welding assembly and the material outlet of the conveying channel. The vertical milling assembly includes an upper vertical plate fixed to the surface of the moving plate, a first lifting plate that slides with the upper vertical plate in a direction perpendicular to the bottom surface of the conveying channel groove, an upper milling motor fixed to the first lifting plate, and an upper milling cutter connected to the rotating shaft of the upper milling motor.

2. The strip splicing device according to claim 1, characterized in that, Also includes: A cutting assembly is disposed on the movable plate. The cutting assembly is located between the feed inlet of the conveying channel and the welding assembly. The cutting assembly is electrically connected to the conveying motor and power components. The cutting assembly is capable of cutting the material in the conveying channel. The first detection channel is located behind the first feeding motor; A first excess material sensor is disposed on the first detection channel, and the first excess material sensor is electrically connected to the cutting assembly; The second detection channel is located behind the second feeding motor; The second residual material sensor is located on the second detection channel and is electrically connected to the second feeding motor.

3. The strip splicing device according to claim 2, characterized in that, Also includes: A first sensor is disposed at the first feed port and is electrically connected to the first feed motor. The second sensor is located at the second feed port and is electrically connected to the second feed motor.

4. The strip splicing device according to claim 3, characterized in that, A notch is made in the conveying channel, and the cutting component includes: The scissors have their blades located at the notch in the conveying channel; The cutting cylinder has its cylinder body fixed to the moving plate, and its piston rod is connected to the scissors. The cutting cylinder can drive the scissors to cut, and the cutting cylinder is electrically connected to the conveying motor and power component.

5. The strip splicing device according to claim 1, characterized in that, A lower friction head is provided on the bottom surface of the conveying channel, and the welding assembly includes: A vertical plate, which is fixed to the movable plate; A pressurizing cylinder, the cylinder body of which is connected to the upper part of the vertical plate, and the piston rod of the pressurizing cylinder is connected to a sleeve; The upper friction head has its top connected to the sleeve, and the friction surface of the upper friction head is perpendicular to the piston rod axis of the pressurized cylinder. Two connecting rods, the upper end of which is hinged to the sleeve and the lower end of which is hinged to the side of the upper friction head, and the axial direction of the connecting rod hinge axis is parallel to the friction surface of the upper friction head; A drive arm, one end of which is hinged to the upper friction head, wherein the hinge axis of the drive arm is aligned with the hinge axis of the connecting rod. A friction head drive mechanism is connected to the other end of the drive arm, and the friction head drive mechanism drives the upper friction head to reciprocate. A bushing, the upper end of which is fitted around the outer periphery of the sleeve, the bushing and the sleeve form an axially movable and radially limited fit, and the bottom end of the bushing and the ball groove of the upper friction head are balls; A compression spring is located between the bushing and the sleeve, with one end of the compression spring pressing against the sleeve and the other end pressing against the bushing; A limiting block is fixed to the upright plate. The limiting block is located between the piston rod of the pressurized cylinder and the upper friction head. The limiting block has a vertical hole for the sleeve to be accommodated. Waist holes are opened on both sides of the limiting block. The waist holes are connected to the vertical hole. The upper pin passes through the waist hole and hinges the upper end of the connecting rod to the sleeve. The waist hole of the limiting block limits the movement of the upper pin along the length of the waist hole. The lower pin passes through the waist hole and hinges the lower end of the connecting rod, the upper friction head, and the drive arm. The axial directions of the lower pin and the upper pin are parallel to the friction surface of the upper friction head. A limiting member is disposed on the conveying channel, the limiting member being located on one or both sides of the upper friction head, the limiting member defining the conveying width of the conveying channel.

6. The strip splicing device according to claim 1, characterized in that, The trimming component also includes: The second side milling cutter is connected to another shaft of the side milling motor. The second side milling cutter is located on the other side of the conveying channel. The second side milling cutter is parallel to the first side milling cutter. The distance between the cutting edges of the second side milling cutter and the first side milling cutter in the direction perpendicular to the conveying direction of the strip is consistent with the width of the strip. A side milling cylinder, the cylinder body of which is fixed to the moving plate, and the extension and retraction direction of the piston rod of the side milling cylinder is perpendicular to the bottom surface of the conveying channel groove; A sliding plate, one side of which is slidably engaged with the cylinder body of the side milling cylinder, is connected to the piston rod of the side milling cylinder.

7. The strip splicing device according to claim 1, characterized in that, The vertical milling assembly also includes: Two pressure rollers are elastically connected to the first lifting plate. The two pressure rollers are located on both sides of the upper milling cutter. The two pressure rollers are arranged along the length of the conveying channel groove. The distance between the two pressure rollers is greater than the overlap length of the tail of the first belt and the head of the second belt. The distance between the bottom edge of the pressure roller and the bottom surface of the conveying channel groove is less than the distance between the end face of the upper milling cutter and the bottom surface of the conveying channel groove. The lower plate is fixed to the back of the movable plate at its upper part; The second lifting plate is slidably engaged with the lower upright plate in a direction perpendicular to the bottom surface of the conveying channel groove; The lower milling motor has its housing fixed to the second lifting plate; The lower milling cutter is connected to the shaft of the lower milling motor. The lower milling cutter is arranged at intervals with the bottom surface of the conveying channel groove. The length direction of the lower milling cutter is the same as that of the upper milling cutter. The bottom of the conveying channel has a through hole, and the bottom surface of the channel on both sides of the through hole has an enlarged area, which accommodates the pressure roller.

8. A splicing method based on the strip splicing device of claim 4, characterized in that, Includes the following steps: S10: The moving plate is in the first position, the feed inlet of the conveying channel on the moving plate is connected to the first feed port, and the first feed motor conveys the first belt on the first material roll forward; S20: First roll feeding completed; S30: The power unit drives the moving plate to move from the first position to the second position. The feed inlet of the conveying channel on the moving plate is connected to the second feed inlet. The head of the second belt is located at the second feed inlet, ready to connect with the first belt. S40: The conveyor motor will transport the first belt a set distance so that the tail of the first belt is delivered to the welding station; S50: The second feeding motor will convey the second belt a set distance so that the head of the second belt is conveyed to the welding station; S60: The welding components are pressed together and the head of the second belt is welded to the tail of the first belt to form a welded part, thus completing the connection between the first belt and the second belt.

9. The connection method according to claim 8, characterized in that, S70: The moving plate is in the second position, the feed inlet of the conveying channel on the moving plate is connected to the second feed inlet, and the second feed motor conveys the second belt on the second material roll forward; S80: Feeding of the second roll of material has ended; S90: The power unit drives the moving plate to move from the second position to the first position. The feed inlet of the conveying channel on the moving plate is connected to the first feed inlet. The head of the first belt is located at the first feed inlet, ready to connect with the second belt. S100: The conveyor motor will transport the second belt a set distance so that the tail of the second belt is delivered to the welding station; S110: The first feeding motor conveys the first belt a set distance so that the head of the first belt is conveyed to the welding station; S120: The welding components are pressed together and the head of the first belt and the tail of the second belt are welded together to complete the connection between the first belt and the second belt.

10. The connection method according to claim 9, characterized in that, S20 includes S21 to S25; S21: The first excess material sensor does not detect the first strip, and the first excess material sensor transmits a signal to the cutting assembly; S22: The cutting component moves to cut the first belt, and the cutting component transmits the cutting completion signal to the first feeding motor, the conveying motor, and the power component; S23: The first feeding motor retracts the waste material according to the received cutting completion signal; S24: Replace the first roll of material that has finished feeding with a new first roll of material, pass the first belt head on the new first roll of material through the residual material detection position, and the first feeding motor delivers the first belt head to the first feeding port. S25: When the first sensor detects the first belt at the first feed port, the first sensor sends a signal to the first feed motor, and the first feed motor stops working; S80 includes S81 to S85; S81: The second excess material sensor did not detect the second strip, and the second excess material sensor transmitted a signal to the cutting assembly; S82: The cutting component moves to cut the second belt, and the cutting component transmits the cutting completion signal to the second feeding motor, the conveyor motor, and the power component; S83: The second feeding motor retracts the waste material according to the received cutting completion signal; S84: Replace the second roll of material that has finished feeding with a new second roll of material, pass the second belt head on the new second roll through the residual material detection position, and the second feeding motor will transport the second belt head to the second feeding port. S85: When the second sensor detects the second belt at the second feed port, the second sensor sends a signal to the second feed motor, and the second feed motor stops working.

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