Automatic film connecting mechanism

Abstract

The invention relates to the technical field of packaging equipment, and discloses an automatic film connecting mechanism which comprises a film pressing structure, a film breaking structure, a film connecting structure, a film stopping structure and a rack, a film inlet hole and a film outlet hole are formed in the top of the rack, and the lower end of the film pressing structure is installed in an inner cavity of the rack; the upper end of the film pressing structure sequentially penetrates through the film connecting structure and the film breaking structure, the upper end of the film pressing structure extends out of the film inlet hole, the upper end of the film pressing structure divides the film inlet hole into a first feeding hole and a second feeding hole, and the film stopping structure is installed on the machine frame and located on the inner side of the film outlet hole. The high-speed automatic film cutting and connecting device can ensure production continuity, realizes full-automatic production in a real sense, can realize high-speed automatic film cutting and connecting under the condition of normal high-speed film feeding without shutdown and deceleration of equipment, and saves a large amount of waiting time and preparation time.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, and in particular to an automatic film splicing mechanism. Background Art

[0002] In the production process of continuous high-speed film packaging, when one roll of film is used up, another roll of film can be automatically connected to ensure the continuity of production and realize fully automated production in the true sense. The automatic film splicing mechanism can realize high-speed automatic film cutting and splicing without stopping the equipment or slowing down the normal high-speed film feeding, saving a lot of waiting time and preparation time.

[0003] The packaging industry in my country is not yet developed enough. In the past, the requirements for film joining mechanisms were not high. As long as manual bonding or manual hot-melt bonding could be achieved, there was no automatic film joining mechanism, only manual film joining, which was simple. However, manual film joining must wait until the machine alarms when the film is used up, and then arrange personnel to manually join the film on the machine, which consumes a lot of waiting time and preparation time, and cannot achieve automatic production of the machine. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above prior art and provide an automatic film splicing mechanism.

[0005] The objective of the present invention is achieved through the following technical scheme: an automatic film splicing mechanism comprises a film pressing structure, a film cutting structure, a film splicing structure, a film stopping structure and a frame, the top of the frame is provided with a film inlet hole and a film outlet hole, the lower end of the film pressing structure is installed in the inner cavity of the frame, the upper end of the film pressing structure passes through the film splicing structure and the film cutting structure in sequence, the upper end of the film pressing structure protrudes from the film inlet hole, the upper end of the film pressing structure divides the film inlet hole into a first feed hole and a second feed hole, and the film stopping structure is installed on the frame and is located on the inner side of the film outlet hole.

[0006] A better choice is that the film cutting structure includes a first film cutting cylinder, a second film cutting cylinder, a first film cutting strip and a second film cutting strip, the first film cutting cylinder and the second film cutting cylinder are both installed on the frame, the first film cutting cylinder and the second film cutting cylinder are respectively installed on both sides of the film pressing structure, the first film cutting strip is connected to the first film cutting cylinder, the second film cutting strip is connected to the second film cutting cylinder, and the first film cutting strip and the second film cutting strip are both located above the film connecting structure.

[0007] A better choice is that the film joining structure includes a first film joining cylinder, a second film joining cylinder, a first film joining strip and a second film joining strip, the first film joining cylinder and the second film joining cylinder are both installed on the frame, the first film joining cylinder and the second film joining cylinder are respectively located on both sides of the film pressing structure, the first film joining cylinder is connected to the first film joining strip, the second film joining cylinder is connected to the second film joining strip, and the first film joining strip and the second film joining strip are both located below the film cutting structure.

[0008] A better choice is that the film pressing structure includes a first film pressing rod, a connecting rod, a second film pressing rod, a supporting rod and a cross rod, the two ends of the cross rod are respectively installed on the two sides of the frame, the two ends of the second film pressing rod are respectively connected to the two ends of the cross beam through the supporting rod, and the two ends of the first film pressing rod are respectively hinged to the two ends of the second film pressing rod through the connecting rod.

[0009] A more preferred option also includes a handle, wherein the handle is connected to the connecting rod.

[0010] A more preferred option also includes a longitudinal sliding frame, and the two ends of the cross bar are respectively installed on the two sides of the frame through the longitudinal sliding frame.

[0011] A better option is that the longitudinal sliding frame includes a slider, a sliding rod and a guide bracket, the guide bracket is installed on the inner side of the frame, the sliding rod is installed on the guide bracket, the slider is slidably connected to the sliding rod, and the slider is respectively connected to both ends of the cross bar.

[0012] A better choice is that the film stopping structure includes a pressure strip, a film pressing cylinder, a cylinder fixing frame and a pressure-bearing seat, the film pressing cylinder is installed on the frame through the cylinder fixing frame, the film pressing cylinder is connected to the pressure strip, the pressure strip is located on the inner side of the film outlet hole, and the pressure strip corresponds to the pressure seat.

[0013] A better choice is that the frame includes a first side plate, a cover plate, a second side plate, a first supporting plate, a second supporting plate, a first base, a second base, a first guide roller, a second guide roller and a third guide roller, the two ends of the cover plate are respectively connected to the first side plate and the second side plate, the first side plate is connected to the first base, the second side plate is connected to the second base, the top of the cover plate is provided with a film feed hole, the lower end of the film pressing structure is installed on the first side plate and the second side plate, the upper end of the film pressing structure passes through the film feed hole, the first supporting plate is installed on the left side of the film pressing structure, the second supporting plate is installed on the right side of the film pressing structure, the first guide roller and the second guide roller are installed on both sides of the film feed hole, and the third guide roller is installed below the film pressing structure.

[0014] A better option also includes a first blowing pipe and a second blowing pipe, wherein the first blowing pipe and the second blowing pipe are both installed on the frame, the first blowing pipe and the second blowing pipe are respectively located on both sides of the film pressing structure, and the first blowing pipe and the second blowing pipe are located below the film joining structure.

[0015] The present invention has the following advantages and beneficial effects compared with the prior art:

[0016] The present invention ensures the continuity of production through the film pressing structure, film cutting structure, film splicing structure, film stopping structure and frame, and realizes fully automated production in a true sense. The automatic film splicing mechanism can realize high-speed automatic film cutting and splicing under the condition of normal high-speed film feeding without stopping the equipment or slowing down, thus saving a lot of waiting time and preparation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an automatic film splicing mechanism of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of an automatic film splicing mechanism of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the right side portion of the film cutting structure and the right side portion of the film joining structure of an automatic film joining mechanism of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the right side portion of the film cutting structure and the right side portion of the film joining structure of an automatic film joining mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the left part of the film cutting structure and the left part of the film joining structure of an automatic film joining mechanism of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the left part of the film cutting structure and the left part of the film joining structure of an automatic film joining mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of a film pressing structure of an automatic film splicing mechanism of the present invention;

[0024] Figure 8 It is a schematic diagram of a film pressing structure of an automatic film splicing mechanism of the present invention;

[0025] Fig. 9 It is a schematic diagram of a frame of an automatic film splicing mechanism of the present invention;

[0026] Fig.10 It is a schematic diagram of a frame of an automatic film splicing mechanism of the present invention;

[0027] Fig.11It is a schematic diagram of the working principle (movement pressing structure rising) of an automatic film splicing mechanism of the present invention;

[0028] Fig.12 It is a schematic diagram of the working principle (the film pressing structure descends) of an automatic film splicing mechanism of the present invention;

[0029] The markings of the components in the attached drawings are as follows: 1-first guide roller; 2-first film cutting cylinder; 3-first film joining cylinder; 4-ultrasonic photoelectric sensor; 5-film pressing cylinder; 6-second guide roller; 7-second film cutting cylinder; 8-second film joining cylinder; 9-solenoid valve; 10-first blowing pipe; 11-second blowing pipe; 12-third guide roller; 13-frame; 1301-first side plate; 1302-cover plate; 1303-second side plate; 1304-glass plate; 1305-first base; 1306-second base; 1307-film inlet hole; 1308-second base; 1309-second film inlet hole; 1310-second film inlet hole; 1311-second film inlet hole; 1312-second film inlet hole; 1313-second film inlet hole; 1314-second film inlet hole; 1315-second film inlet hole; 1316-second film inlet hole; 1317-second film inlet hole; 1318-second film inlet hole; 1319-second film inlet hole; 1320-second film inlet hole; 1321-second film inlet hole; 1322-second film inlet hole; 1323-second film inlet hole; 1324-second film inlet hole; 1325-second film inlet hole; 1326-second film inlet hole; 1327-second film inlet hole; 1328-second film inlet hole; 1329-second film inlet hole; 1330-second film inlet hole; 1331-second film inlet hole; 1332-second film inlet hole; 1333-second film inlet hole; 1334-second film inlet hole; 1335-second film 08-film outlet hole; 14-film pressing structure; 1401-handle; 1402-connecting rod; 1403-first film pressing rod; 1404-second film pressing rod; 1405-support rod; 1406-cross bar; 1407-slider; 1408-slide bar; 1409-guide bracket; 15-first film cutting strip; 16-first film joining strip; 17-first bearing plate; 18-second film cutting strip; 19-second film joining strip; 20-second bearing plate; 21-pressure strip; 22-cylinder fixing frame; 23-pressure bearing seat; 24-first film roll; 25-second film roll. DETAILED DESCRIPTION

[0030] The purpose of the present invention is further described in detail below with reference to the accompanying drawings and specific examples. The examples cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following examples.

[0031] like Figure 1 and 2 As shown, an automatic film splicing mechanism includes a film pressing structure 14, a film cutting structure, a film splicing structure, a film stopping structure and a frame 13. A film inlet hole 1307 is provided on the top of the frame 13, and a film outlet hole 1308 is provided on the right side of the frame 13. The lower end of the film pressing structure 14 is installed on the inner wall of the frame 13, and the upper end of the film pressing structure 14 passes through the film splicing structure and the film cutting structure in sequence, and then extends out of the film inlet hole 1307. The upper end of the film pressing structure 14 divides the film inlet hole 1307 into a first feed hole and a second feed hole. The film stopping structure is installed on the inner wall of the frame 13, and the film stopping structure is located at the lower right side of the film splicing structure, that is, on the inner side of the film outlet hole 1308.

[0032] The film pressing structure 14 is used to introduce the film into the mechanism and then fix the end of the film. The film cutting structure is used to cut the film after film splicing. The film splicing structure is used to hot-melt two films. The film stopping structure is used to press the film to be discharged before the film splicing process to facilitate film splicing. The frame 13 is used to fix and install various structures and guide the film in and out.

[0033] like Figure 2-6 As shown, the film cutting structure includes a first film cutting cylinder 2, a first film cutting strip 15, a second film cutting cylinder 7 and a second film cutting strip 18. The first film cutting cylinder 2 is mounted on the first bearing plate 17 on the right side of the frame 13, and the second film cutting cylinder 7 is mounted on the second bearing plate 20 on the left side of the frame 13. That is, the first film cutting cylinder 2 is located on the right side of the film pressing structure 14, and the second film cutting cylinder 7 is located on the left side of the film pressing structure 14. The first film cutting strip 15 is connected to the first film cutting cylinder 2, and the first film cutting strip 15 is located between the first film cutting cylinder 2 and the film pressing structure 14. The second film cutting strip 18 is connected to the second film cutting cylinder 7, and the second film cutting strip 18 is located between the second film cutting cylinder 7 and the film pressing structure 14. The first film cutting strip 15 is located above the first film joining strip 16 of the film joining structure. The second film cutting strip 18 is located above the second film joining strip 19 of the film joining structure.

[0034] The first film cutting cylinder 2 provides power for the left-right movement of the first film cutting strip 15. The first film cutting strip 15 is used to cut the film. The second film cutting cylinder 7 provides power for the left-right movement of the second film cutting strip 18. The second film cutting strip 18 is used to cut the film.

[0035] like Figure 2-6 As shown, the film splicing structure includes a first film splicing cylinder 3, a second film splicing cylinder 8, a first film splicing strip 16 and a second film splicing strip 19. The first film splicing cylinder 3 is mounted on the first supporting plate 17 on the right side of the frame 13, and the second film splicing cylinder 8 is mounted on the second supporting plate 20 on the left side of the frame 13. That is, the first film splicing cylinder 3 is located on the right side of the film pressing structure 14, and the second film splicing cylinder 8 is located on the left side of the film pressing structure 14. The first film splicing cylinder 3 is connected to the first film splicing strip 16, and the second film splicing cylinder 8 is connected to the second film splicing strip 19. The first film splicing strip 16 is located between the first film splicing cylinder 3 and the film pressing structure 14, and the second film splicing strip 19 is located between the second film splicing cylinder 8 and the film pressing structure 14. The first film splicing strip 16 is located below the first film splicing strip 15 of the film cutting structure, and the second film splicing strip 19 is located below the second film cutting strip 18 of the film cutting structure.

[0036] The first film-joining cylinder 3 provides power for the left-right movement of the first film-joining strip 16. The second film-joining cylinder 8 provides power for the left-right movement of the second film-joining strip 19. The first film-joining strip 16 is provided with a heating sheet for connecting two films by hot-melt. The second film-joining strip 19 is provided with a heating sheet for connecting two films by hot-melt.

[0037] like Figure 7 As shown, the film pressing structure 14 includes a handle 1401, a first film pressing rod 1403, four transmission rods 1402, a second film pressing rod 1404, two support rods 1405, a cross bar 1406 and two longitudinal sliding frames, each of which includes a slider 1407, a slide bar 1408 and a guide bracket 1409. The two ends of the cross bar 1406 are respectively connected to the two sliders 1407, and the two sliders 1407 are respectively slidably connected to the two slide bars 1408. The two slide bars 1408 are installed on the guide bracket 1409, and the two guide brackets 1409 are respectively installed on the inner sides of the first bearing plate 17 and the second bearing plate 20 of the frame 13. The two ends of the second film pressing rod 1404 are respectively connected to the two ends of the cross bar 1406 through the two support rods 1405. The two ends of the first film pressing rod 1403 are respectively hinged through the upper ends of the four transmission rods 1402, and the lower ends of the four transmission rods 1402 are hinged to the two ends of the second film pressing rod 1404. The handle 1401 is installed on one of the transmission rods 1402.

[0038] The handle 1401 facilitates the operator to control the loosening and clamping of the film by the first film pressing rod 1403. The first film pressing rod 1403 and the second film pressing rod 1404 cooperate with each other to press the film. The transmission rod 1402 is used to limit the moving position of the first film pressing rod 1403 so that the first film pressing rod 1403 and the second film pressing rod 1404 can be clamped. The support rod 1405 keeps the second film pressing rod 1404 at a certain height to play a supporting role. The cross bar 1406 is used to carry the support rod 1405. The longitudinal sliding frame is used to enable the film pressing structure 14 to extend or retract from the frame 13. The slider 1407 and the slide bar 1408 slide against each other to achieve the lifting and lowering of the longitudinal sliding frame. The guide bracket 1409 is used to fix the slide bar 1408.

[0039] like Figure 2-4 As shown, the film stopping structure includes a pressure strip 21, a film pressing cylinder 5, a cylinder fixing frame 22 and a pressure bearing seat 23. The two ends of the cylinder fixing frame 22 are respectively mounted on the first side plate 1301 and the second side plate 1303 of the frame 13. The film pressing cylinder 5 is mounted on the cylinder fixing frame 22. The film pressing cylinder 5 is connected to the pressure strip 21. The two ends of the pressure bearing seat 23 are respectively mounted on the first side plate 1301 and the second side plate 1303 of the frame 13, and the pressure strip 21 and the pressure bearing seat 23 are located at the inner side of the film outlet hole 1308 of the frame 13. The pressure strip 21 and the pressure bearing seat 23 correspond to each other.

[0040] The pressure strip 21 cooperates with the pressure bearing seat 23 to clamp the film, so that the film connection structure can connect two films. The film pressing cylinder 5 provides power for the longitudinal up and down movement of the pressure strip 21. The cylinder fixing frame 22 is used to fix the film pressing cylinder 5 on the frame 13.

[0041] like Figure 2 , 9 As shown in Figure 10, the frame 13 includes a first side plate 1301, a cover plate 1302, a second side plate 1303, a first bearing plate 17, a second bearing plate 20, a first base 1305, a second base 1306, a first blowing pipe 10, a second blowing pipe 11, two glass plates 1304, a first guide roller 1, a second guide roller 6 and a third guide roller 12. The two ends of the cover plate 1302 are respectively connected to the upper end of the first side plate 1301 and the upper end of the second side plate 1303, the lower end of the first side plate 1301 is connected to the first base 1305, and the lower end of the second side plate 1303 is connected to the second base 1306. Two observation windows are provided on the top of the cover plate 1302, and the two glass plates 1304 are respectively installed on the two observation windows. A film inlet hole 1307 is provided between the two observation windows, the first guide roller 1 is located on the inner right side of the film inlet hole 1307, and the second guide roller 6 is located on the inner left side of the film inlet hole 1307. The lower end of the film pressing structure 14 is connected to the inner side of the first side plate 1301 and the inner side of the second side plate 1303 respectively, and the third guide roller 12 is located below the guide bracket 1409 of the film pressing structure 14. The upper end of the film pressing structure 14 passes through the first blowing pipe 10 and the second blowing pipe 11, the first film connection strip 16 and the second film connection strip 19, the first film cutting strip 15 and the second film cutting strip 18, and the first guide roller 1 and the second guide roller 6 in sequence, and then protrudes from the film inlet hole 1307. The first blowing pipe 10 is installed on the inner side of the first bearing plate 17, and the second blowing pipe 11 is installed on the inner side of the second bearing plate 20. The two ends of the first bearing plate 17 are installed on the first side plate 1301 and the second side plate 1303 respectively. The two ends of the second bearing plate 20 are respectively mounted on the first side plate 1301 and the second side plate 1303. An ultrasonic photoelectric sensor 4 is mounted on the outer side of the first bearing plate 17, and an electromagnetic valve is mounted on the outer side of the second bearing plate 20.

[0042] The first side plate 1301 and the second side plate 1303 both play a supporting role. The cover plate 1302 is used to protect the internal structure and prevent dust from entering the interior of the device. The first bearing plate 17 and the second bearing plate are both used to install the film cutting structure, the film joining structure, the first blowing pipe 10 and the second blowing pipe 11. The first base 1305 and the second base 1306 are both used to fix the automatic film joining mechanism. The glass plate 1304 is convenient for the operator to observe the internal situation and can prevent dust from entering the interior of the device. The first blowing pipe 10 and the second blowing pipe 11 are used to accelerate the cooling of the hot melt connection of the film. The ultrasonic photoelectric sensor 4 detects whether there is a film, that is, whether the film has been used up. The solenoid valve is used to control the first film cutting cylinder 2, the second film cutting cylinder 7, the first film joining cylinder 3 and the second film cutting cylinder 8. The first guide roller 1 is used to introduce the film of the first film roll 24 into the interior of the automatic film joining mechanism. The second guide roller 6 is used to introduce the film of the second film roll 25 from the film inlet hole 1307 into the interior of the automatic film joining mechanism. The third guide roller 12 is used to guide the film to the film outlet hole 1308 .

[0043] A method for using an automatic film splicing mechanism comprises the following steps:

[0044] S1, such as Fig.11 and 12 As shown, in order to facilitate the operator to replace the film, the film pressing structure 14 is pulled up from the frame 13, the cross bar 1406 rises to a position close to the film inlet hole 1307, the film of the second film roll 25 passes through the second guide roller 6, then goes around the bottom of the cross bar 1406 and enters between the first film pressing rod 1403 and the second film pressing rod 1404, the operator holds the handle 1401 and presses the first film pressing rod 1403 downward, so that the first film pressing rod 1403 and the second film pressing rod 1404 press the film of the second film roll 25. Then the film pressing structure 14 is lowered back into the frame 13.

[0045] S2. When it is detected that the first film roll 24 is about to run out, the film stopping structure presses the film of the first film roll 24. Then the first film splicing strip 16 on the right side of the film splicing structure moves to the left to heat-melt the film of the first film roll 24 and the film of the second film roll 25 together, and then the first film cutting strip 15 cuts the film of the film rolls. The film stopping structure opens and no longer presses the film, and continues to move when the film is pulled. When the hot-melt connection between the film of the first film roll 24 and the film of the second film roll 25 passes through the first blowing pipe 10, the first blowing pipe 10 accelerates the cooling of the hot-melt connection, completes the automatic film replacement, and automatically alarms to notify the operator to replace the film roll.

[0046] S3, the operator removes the used first film roll 24, then installs a new first film roll 24, pulls up the film pressing structure 14 from the frame 13 again, and pulls up the first film pressing rod 1403 through the handle 1401. The film of the new first film roll 24 passes through the first guide roller 1, bypasses the bottom of the cross bar 1406, and is then placed between the first film pressing rod 1403 and the second film pressing rod 1404, and then the first film pressing rod 1403 is pressed down again through the handle 1401, so that the first film pressing rod 1403 and the second film pressing rod 1404 clamp the film. The operator finally puts the film pressing structure 14 into the frame 13.

[0047] S4. When the second film roll 25 is about to run out, the film stop structure compresses the film of the second film roll 25. Then the second film splicing strip 19 on the left side of the film splicing structure moves to the right to heat-melt the film of the new first film roll 24 and the film of the second film roll 25 together, and then the second film cutting strip 18 cuts the film of the second film roll 25. The film stop structure opens and no longer presses the film, and continues to move while the film is pulled. When the hot-melt connection between the film of the new first film roll 24 and the film of the second film roll 25 passes through the second blowing pipe 11, the second blowing pipe 11 accelerates the cooling of the hot-melt connection, completes the automatic film replacement, and automatically alarms to notify the operator to replace the film roll.

[0048] The above specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. An automatic film splicing mechanism, characterized in that: It includes a film pressing structure, a film cutting structure, a film joining structure, a film stopping structure and a frame. The top of the frame is provided with a film inlet hole and a film outlet hole. The lower end of the film pressing structure is installed in the inner cavity of the frame. The upper end of the film pressing structure passes through the film joining structure and the film cutting structure in sequence. The upper end of the film pressing structure protrudes from the film inlet hole. The upper end of the film pressing structure divides the film inlet hole into a first feed hole and a second feed hole. The film stopping structure is installed on the frame and is located on the inner side of the film outlet hole.

2. The automatic film splicing mechanism according to claim 1, characterized in that: The film cutting structure includes a first film cutting cylinder, a second film cutting cylinder, a first film cutting strip and a second film cutting strip. The first film cutting cylinder and the second film cutting cylinder are both installed on the frame. The first film cutting cylinder and the second film cutting cylinder are respectively installed on both sides of the film pressing structure. The first film cutting strip is connected to the first film cutting cylinder, and the second film cutting strip is connected to the second film cutting cylinder. The first film cutting strip and the second film cutting strip are both located above the film joining structure.

3. The automatic film splicing mechanism according to claim 1, characterized in that: The film splicing structure includes a first film splicing cylinder, a second film splicing cylinder, a first film splicing strip and a second film splicing strip. The first film splicing cylinder and the second film splicing cylinder are both installed on the frame. The first film splicing cylinder and the second film splicing cylinder are respectively located on both sides of the film pressing structure. The first film splicing cylinder is connected to the first film splicing strip, and the second film splicing cylinder is connected to the second film splicing strip. The first film splicing strip and the second film splicing strip are both located below the film cutting structure.

4. The automatic film splicing mechanism according to claim 1, characterized in that: The film pressing structure includes a first film pressing rod, a connecting rod, a second film pressing rod, a supporting rod and a cross rod, the two ends of the cross rod are respectively installed on the two sides of the frame, the two ends of the second film pressing rod are respectively connected to the two ends of the cross beam through the supporting rod, and the two ends of the first film pressing rod are respectively hinged to the two ends of the second film pressing rod through the connecting rod.

5. The automatic film splicing mechanism according to claim 4, characterized in that: Also included is a handle, which is connected to the connecting rod.

6. The automatic film splicing mechanism according to claim 4, characterized in that: It also includes a longitudinal sliding frame, and the two ends of the cross bar are respectively installed on the two sides of the frame through the longitudinal sliding frame.

7. The automatic film splicing mechanism according to claim 6, characterized in that: The longitudinal sliding frame includes a slider, a sliding rod and a guide bracket, the guide bracket is installed on the inner side of the frame, the sliding rod is installed on the guide bracket, the slider is slidably connected to the sliding rod, and the slider is respectively connected to both ends of the cross bar.

8. The automatic film splicing mechanism according to claim 1, characterized in that: The film-stopping structure includes a pressure strip, a film-pressing cylinder, a cylinder fixing frame and a pressure-bearing seat. The film-pressing cylinder is installed on the frame through the cylinder fixing frame. The film-pressing cylinder is connected to the pressure strip. The pressure strip is located on the inner side of the film outlet hole, and the pressure strip corresponds to the pressure-bearing seat.

9. The automatic film splicing mechanism according to claim 1, characterized in that: It also includes a first blowing pipe and a second blowing pipe, wherein the first blowing pipe and the second blowing pipe are both installed on the frame, the first blowing pipe and the second blowing pipe are respectively located on both sides of the film pressing structure, and the first blowing pipe and the second blowing pipe are located below the film joining structure.

10. The automatic film splicing mechanism according to claim 1, characterized in that: The frame includes a first side plate, a cover plate, a second side plate, a first supporting plate, a second supporting plate, a first base, a second base, a first guide roller, a second guide roller and a third guide roller, the two ends of the cover plate are respectively connected to the first side plate and the second side plate, the first side plate is connected to the first base, the second side plate is connected to the second base, a film feed hole is provided on the top of the cover plate, the lower end of the film pressing structure is installed on the first side plate and the second side plate, the upper end of the film pressing structure passes through the film feed hole, the first supporting plate is installed on the left side of the film pressing structure, the second supporting plate is installed on the right side of the film pressing structure, the first guide roller and the second guide roller are installed on both sides of the film feed hole, and the third guide roller is installed below the film pressing structure.

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