Silage bag folding machine travel limit mechanism

Abstract

The travel limit mechanism of the silage bag folding machine relates to the technical field of the silage bag folding machine, and comprises a frame arranged in the longitudinal direction, an expansion plate is provided on one side of the frame for horizontal sliding in the transverse direction, two supporting outer plates for moving in opposite directions are provided on the outer wall of the expansion plate for vertical sliding, and a linkage mechanism for driving the expansion plate and the two supporting outer plates to move synchronously is provided on the expansion plate; a contraction travel limit structure for limiting the movement travel of the expansion plate and the supporting outer plate is provided on the supporting outer plate; and a mounting plate is provided on the frame for horizontal sliding in the longitudinal direction. The utility model solves the problem that the devices in the traditional technology all use structures such as cylinders to drive the folding mechanism, which is limited by the limitation of the driving mode, so that the folding mechanism is prone to over-movement during operation, resulting in the problem of affecting the folding efficiency of the silage bag.

Description

Technical Field

[0001] The utility model relates to the technical field of silage bag folding machines, in particular to a travel limiting mechanism of a silage bag folding machine. Background Art

[0002] At present, there is a kind of plastic silage bag for farm animals on the market, which is mainly used for silage of livestock feed. Compared with other silage methods, bagged silage has the advantages of less labor, less waste, low cost and convenient operation. In particular, the fermentation effect of bagged green fodder is good and more conducive to livestock digestion and absorption. At present, small-sized bags with a length and width of 1-2 meters are commonly used in China, and they can be used directly without folding. However, there is a large silage bag used in conjunction with a filling machine on the international market, which is wider and can reach 80 meters in length. It can be put on the discharge port of the filling machine for use. The filling machine must walk and put the bag at the same time when filling. The general roll-shaped products cannot be used directly. It must be folded one ring after another, and the folding method is similar to a folding fan. Because it is ring-shaped and large in size, it is difficult to achieve manual folding without the help of a silage bag folding machine.

[0003] The prior art discloses a patent with a publication number of CN108069279A, which includes two symmetrically arranged fixed plates, which are used to fix the folded silage bags; it also includes a plurality of clamping devices and presser feet, the clamping devices are used to clamp the folded silage bags on the fixed plates; the presser feet are located between the two fixed plates and are used to tension the silage bags; the fixing system for the silage bag folding machine also includes a support portion arranged between the two fixed plates, the position of the support portion can be adjusted up and down, and the support portion is used to support the folded silage bags on the fixed plates. The fixing system for the silage bag folding machine of the present invention can support, fix and position the folded silage bags during the folding of the silage bags, and can also facilitate the subsequent silage bags to continue to be folded toward the surface of the folded silage bags, so that better positioning can be achieved in the folding of the silage bags one by one, and the folded silage bags can be ensured to be more neat and orderly.

[0004] The existing devices including the above patents gradually exposed the shortcomings of the existing technology as they were used, mainly in the following aspects:

[0005] Silage bag folding machines all utilize structures such as cylinders to drive the folding mechanism. Due to the limitations of the driving method, the folding mechanism is prone to over-movement during operation, which affects the folding efficiency of the silage bags.

[0006] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0007] In view of the defects in the prior art, the utility model provides a travel limit mechanism for a silage bag folding machine, which is used to solve the problem that the devices in the traditional technology all utilize structures such as cylinders to drive the folding mechanism, and are restricted by the driving method, which makes the folding mechanism prone to over-movement during operation, resulting in affecting the folding efficiency of the silage bags.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] The travel limit mechanism of the silage bag folding machine comprises a frame arranged in the longitudinal direction, an expansion plate is provided on one side of the frame for horizontal sliding in the transverse direction, two supporting outer plates for moving in opposite directions are provided on the outer wall of the expansion plate for vertical sliding, and a linkage mechanism for driving the expansion plate and the two supporting outer plates to move synchronously is provided on the expansion plate;

[0010] The support outer plate is provided with a contraction stroke limiting structure for limiting the movement stroke of the expansion plate and the support outer plate;

[0011] The frame is provided with a mounting plate for sliding horizontally in the longitudinal direction, the mounting plate is provided with a feeding plate for sliding horizontally in the transverse direction, the frame is provided with a longitudinal stroke limiting structure for limiting the moving stroke of the mounting plate, and the mounting plate is provided with a transverse stroke limiting structure for limiting the moving stroke of the feeding plate.

[0012] As an optimized solution, a longitudinal guide rail is fixedly connected to the frame along the longitudinal direction, and a longitudinal guide seat is fixedly connected to the mounting plate and is slidably constrained on the longitudinal guide rail.

[0013] As an optimized solution, the longitudinal stroke limit structure includes a longitudinal stroke position sensor fixedly connected to the frame, the longitudinal stroke position sensor is close to the end of the longitudinal guide rail toward the expansion plate, and a longitudinal detection plate matching the longitudinal stroke position sensor is fixedly connected to the longitudinal guide seat.

[0014] As an optimized solution, two guide pillars are fixedly connected horizontally from top to bottom on the inner wall of the supply plate, and a guide cylinder is fixedly connected to the inner wall of the mounting plate corresponding to each guide pillar, and the guide pillar is slidably mounted on the guide cylinder.

[0015] As an optimized solution, the lateral stroke limit structure includes two lateral stroke position sensors fixed in parallel on the outer wall of the guide cylinder, and the other end of the guide column is fixedly connected to an L-shaped frame, and the frame is fixedly connected to a lateral detection plate matching the lateral stroke position sensor.

[0016] As an optimized solution, the linkage mechanism includes a right-angle steering gear fixed on the inner wall of the expansion plate, and the right-angle steering gear is provided with two coaxially arranged vertical output ends and a transverse output end, the two vertical output ends are respectively connected to a vertical lead screw, and the transverse output end is connected to a transverse lead screw, the transverse lead screw is threadedly connected to the frame, and the two vertical lead screws are correspondingly threadedly connected to two supporting outer plates.

[0017] As an optimized solution, two vertical guide rails are fixedly connected in parallel to the outer wall of the expansion plate, and a vertical guide seat matching the guide rails is fixedly connected to the inner wall of the supporting outer plate.

[0018] As an optimized solution, the retraction stroke limit structure includes two vertical stroke position sensors fixed in parallel from top to bottom on the inner wall of the expansion plate, a horizontal rod fixed on the vertical guide seat, and a vertical detection plate matching the vertical stroke position sensor fixed on the horizontal rod.

[0019] As an optimized solution, a transverse cylinder is fixedly connected horizontally along the inner wall of the mounting plate, and the telescopic end of the transverse cylinder is fixedly connected to the inner wall of the supply plate.

[0020] As an optimized solution, a longitudinal cylinder is horizontally fixedly connected to one end of the frame, and a telescopic end of the longitudinal cylinder is fixedly connected to the mounting plate.

[0021] As an optimized solution, a limit seat for adjusting the extension distance in the lateral direction is fixedly connected to the inner wall of the supply plate, and an avoidance hole for avoiding the limit seat is opened on the mounting plate. A control plate for turning it on and off is provided on one side of the avoidance hole in a vertically sliding manner, and a limit interval is formed between the control plate and the limit seat.

[0022] As an optimized solution, a threaded barrel is horizontally fixedly connected to the inner wall of the supply plate, a screw rod is horizontally threadedly connected inside the threaded barrel, and the limiting seat is fixedly connected to the outer end of the screw rod.

[0023] As an optimized solution, a telescopic cylinder is vertically fixed to the outer wall of the mounting plate, a connecting seat is fixed to the telescopic end of the telescopic cylinder, a connecting plate is horizontally fixed to the side wall of the control plate, and the connecting plate is hinged to the connecting seat.

[0024] As an optimized solution, the areas of the mounting plate on both sides of the avoidance hole are fixedly connected with guide plates, and sliding grooves are vertically opened on the opposite end walls of the two guide plates, and the opposite side edges of the control plate are slidably constrained in the sliding grooves.

[0025] As an optimized solution, two guide rods are fixedly connected in parallel from top to bottom on the inner wall of the expansion plate, and a guide sleeve is fixedly connected to each guide rod on the frame, and the guide rod passes through the guide sleeve horizontally.

[0026] As an optimized solution, a transverse driving seat is fixedly connected to the frame, and the transverse lead screw is threadedly connected to the transverse driving seat.

[0027] As an optimized solution, a vertical drive seat is fixedly connected to each of the supporting outer plates, and the vertical drive seat is threadedly connected to the vertical lead screw.

[0028] As an optimized solution, an avoidance channel is opened on the expansion plate corresponding to each of the supporting outer plates, a connecting plate is horizontally fixed to the inner wall of the supporting outer plate, and the vertical driving seat is fixed to the end of the connecting plate.

[0029] As an optimized solution, the right-angle commutator is also provided with a power input end, and the power input end is connected to a reducer.

[0030] As an optimized solution, an end seat is fixedly connected to the inner wall of the expansion plate corresponding to each of the vertical lead screws, and the other end of the vertical lead screw is rotatably mounted on the end seat.

[0031] Compared with the prior art, the beneficial effects of the utility model are:

[0032] By setting a contraction stroke limit structure, the distance between two vertical stroke position sensors is used to control the running stroke of the supporting outer plate, and then the movement stroke of the expansion plate is synchronously controlled through the connecting mechanism, so as to achieve precise control of the stroke of the supporting outer plate and the expansion plate;

[0033] The two lateral stroke position sensors on the lateral stroke limit structure are used to control each lateral movement of the feeding plate, thereby achieving precise control of the stroke of the feeding plate.

[0034] The longitudinal stroke position sensor on the longitudinal stroke limit structure is used to control the movement stroke of the mounting plate toward the expansion plate. By combining the position sensor, the effective control of the mechanism stroke can be improved.

[0035] By setting a limit seat between the supply plate and the mounting plate, and adjusting the extension length of the screw rod, the limit interval between the limit seat and the control plate can be adjusted, so that when the silage bag needs to be released from tension, the driving cylinder drives the supply plate to retract, and the supply plate drives the limit seat moving seat to move, and the limit seat will press against the control plate, thereby accurately controlling the movement stroke of the supply plate, so that the arc-shaped bag support plate can release the tension of the silage bag while supporting the silage bag, thereby ensuring the supply efficiency of subsequent silage bags;

[0036] By adjusting the extension distance of the screw rod, the movement stroke of the arc-shaped bag support plate can be adjusted;

[0037] When the silage bag is folded and needs to be removed from the folding machine, the telescopic cylinder drives the control panel to rise, opens the avoidance hole, releases the limit of the control panel on the limit seat, and the driving cylinder drives the arc-shaped bag support plate to return with a large stroke to avoid the silage bag;

[0038] By setting a right-angle commutator and using a reducer to drive the two vertical screws and the horizontal screw to rotate synchronously, the expansion plate is synchronously driven to move inward and the two supporting outer plates move toward each other to achieve contraction. Not only is the structure simple, but the operation is stable, and the support stability of the silage bag is improved;

[0039] Each time a layer of silage bag is folded, the reducer drives the right-angle commutator to drive the expansion plate to move inward and the two supporting outer plates to move toward each other a short distance, thereby continuously folding and supporting the silage bag, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0041] Figure 1 It is a schematic diagram of the structure of the utility model;

[0042] Figure 2 It is a schematic diagram of the supply plate of the utility model;

[0043] Figure 3 It is a schematic diagram of the supporting outer plate of the utility model.

[0044] In the figure: 1-frame; 2-feed plate; 3-support outer plate; 4-longitudinal guide rail; 5-longitudinal guide seat; 6-longitudinal stroke position sensor; 7-longitudinal detection plate; 8-longitudinal cylinder; 9-transverse cylinder; 10-guide column; 11-guide cylinder; 12-frame; 13-transverse stroke position sensor; 14-transverse detection plate; 15-limit seat; 16-threaded cylinder; 17-control board; 18-avoidance hole; 19-expansion plate; 20-right angle commutator; 21-vertical lead screw; 22-transverse lead screw; 23-vertical guide seat; 24-vertical guide rail; 25-vertical stroke position sensor; 26-horizontal rod; 27-vertical detection plate; 28-guide rod; 29-guide sleeve. DETAILED DESCRIPTION

[0045] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0046] like Figures 1 to 3 As shown, the travel limit mechanism of the silage bag folding machine includes a frame 1 arranged in the longitudinal direction, a spreading plate 19 is provided on one side of the frame 1 for horizontal sliding in the transverse direction, two supporting outer plates 3 for moving in opposite directions are provided on the outer wall of the spreading plate 19 for vertical sliding, and a linkage mechanism for driving the spreading plate 19 and the two supporting outer plates 3 to move synchronously is provided on the spreading plate 19;

[0047] The supporting outer plate 3 is provided with a contraction stroke limiting structure for limiting the movement stroke of the expansion plate 19 and the supporting outer plate 3;

[0048] A mounting plate is provided on the frame 1 for longitudinal horizontal sliding, a feeding plate 2 is provided on the mounting plate for transverse horizontal sliding, a longitudinal stroke limiting structure for limiting the moving stroke of the mounting plate is provided on the frame 1, and a transverse stroke limiting structure for limiting the moving stroke of the feeding plate 2 is provided on the mounting plate.

[0049] A longitudinal guide rail 4 is fixedly connected to the frame 1 along the longitudinal direction, and a longitudinal guide seat 5 which is slidably constrained on the longitudinal guide rail 4 is fixedly connected to the mounting plate.

[0050] The longitudinal stroke limit structure includes a longitudinal stroke position sensor 6 fixedly connected to the frame 1 , the longitudinal stroke position sensor 6 is close to the end of the longitudinal guide rail 4 facing the expansion plate 19 , and a longitudinal detection plate 7 matching the longitudinal stroke position sensor 6 is fixedly connected to the longitudinal guide seat 5 .

[0051] Two guide pillars 10 are fixedly connected horizontally from top to bottom on the inner wall of the feeding plate 2 , and a guide cylinder 11 is fixedly connected to the inner wall of the mounting plate corresponding to each guide pillar 10 , and the guide pillar 10 is slidably mounted on the guide cylinder 11 .

[0052] The lateral travel limit structure includes two lateral travel position sensors 13 fixed in parallel on the outer wall of the guide cylinder 11. The other end of the guide column 10 is fixedly connected to an L-shaped frame 12, and the frame 12 is fixedly connected to a lateral detection plate 14 matching the lateral travel position sensor 13.

[0053] The linkage mechanism includes a right-angle steering gear fixed on the inner wall of the expansion plate 19, and the right-angle steering gear is provided with two coaxially arranged vertical output ends and a horizontal output end. The two vertical output ends are respectively connected to a vertical lead screw 21, and the horizontal output end is connected to a horizontal lead screw 22. The horizontal lead screw 22 is threadedly connected to the frame 1, and the two vertical lead screws 21 are correspondingly threadedly connected to the two supporting outer plates 3.

[0054] Two vertical guide rails 24 are fixedly connected in parallel to the outer wall of the expansion plate 19 , and a vertical guide seat 23 matching the guide rails is fixedly connected to the inner wall of the supporting outer plate 3 .

[0055] The contraction stroke limit structure includes two vertical stroke position sensors 25 fixed to the inner wall of the expansion plate 19 in parallel from top to bottom, a horizontal rod 26 fixed to the vertical guide seat 23, and a vertical detection plate 27 matching the vertical stroke position sensor 25 fixed to the horizontal rod 26.

[0056] A transverse cylinder 9 is fixedly connected horizontally along the inner wall of the mounting plate, and the telescopic end of the transverse cylinder 9 is fixedly connected to the inner wall of the supply plate 2.

[0057] A longitudinal cylinder 8 is horizontally fixed to one end of the frame 1, and a telescopic end of the longitudinal cylinder 8 is fixed to a mounting plate.

[0058] A limit seat 15 for adjusting the extension distance in the lateral direction is fixedly connected to the inner wall of the supply plate 2, and an avoidance hole 18 for avoiding the limit seat 15 is opened on the mounting plate. A control plate 17 for switching the avoidance hole 18 is vertically slidably provided on one side of the avoidance hole 18, and a limit interval is formed between the control plate 17 and the limit seat 15.

[0059] A threaded barrel 16 is horizontally fixedly connected to the inner wall of the feeding plate 2, a screw rod is horizontally threadedly connected inside the threaded barrel 16, and a limiting seat 15 is fixedly connected to the outer end of the screw rod.

[0060] A telescopic cylinder is vertically fixed to the outer wall of the mounting plate, a connecting seat is fixed to the telescopic end of the telescopic cylinder, a connecting plate is horizontally fixed to the side wall of the control plate 17, and the connecting plate is hinged to the connecting seat.

[0061] The areas of the mounting plate on both sides of the avoidance hole 18 are respectively fixed with guide plates, and sliding grooves are vertically opened on the opposite end walls of the two guide plates, and the opposite side edges of the control plate 17 are slidably constrained in the sliding grooves.

[0062] Two guide rods 28 are fixedly connected in parallel from top to bottom on the inner wall of the expansion plate 19 , and a guide sleeve 29 is fixedly connected to each guide rod 28 on the frame 1 , and the guide rod 28 passes through the guide sleeve 29 horizontally.

[0063] A transverse driving seat is fixedly connected to the frame 1, and the transverse lead screw 22 is threadedly connected to the transverse driving seat.

[0064] A vertical driving seat is fixedly connected to each supporting outer plate 3 , and the vertical driving seat is threadedly connected to the vertical lead screw 21 .

[0065] An escape channel is provided on the expansion plate 19 corresponding to each supporting outer plate 3 , a connecting plate is horizontally fixed to the inner wall of the supporting outer plate 3 , and a vertical driving seat is fixed to the end of the connecting plate.

[0066] The right-angle commutator 20 is also provided with a power input end, and a speed reducer is connected to the power input end.

[0067] An end seat is fixedly connected to the inner wall of the expansion plate 19 corresponding to each vertical lead screw 21 , and the other end of the vertical lead screw 21 is rotatably mounted on the end seat.

[0068] The working principle of this device is:

[0069] By setting a contraction stroke limit structure, the distance between the two vertical stroke position sensors 25 is used to control the running stroke of the supporting outer plate 3, and then the movement stroke of the expansion plate 19 is synchronously controlled through the connecting mechanism, so as to achieve accurate control of the strokes of the supporting outer plate 3 and the expansion plate 19;

[0070] The two lateral stroke position sensors 13 on the lateral stroke limit structure are used to control each lateral movement stroke of the feeding plate 2, thereby realizing accurate control of the stroke of the feeding plate 2;

[0071] The longitudinal stroke position sensor 6 on the longitudinal stroke limit structure is used to control the movement stroke of the mounting plate toward the expansion plate 19. By combining the position sensor, the effective control of the mechanism stroke can be improved.

[0072] By setting a limit seat 15 between the feeding plate 2 and the mounting plate, the limit interval between the limit seat 15 and the control plate 17 can be adjusted by adjusting the extension length of the screw rod, so that when it is necessary to release the tension of the silage bag, the driving cylinder drives the feeding plate 2 to retract, and the feeding plate 2 drives the moving seat of the limit seat 15 to move, and the limit seat 15 will press against the control plate 17, thereby accurately controlling the movement stroke of the feeding plate 2, so that the arc-shaped bag-supporting plate can release the tension of the silage bag while also supporting the silage bag, thereby ensuring the supply efficiency of the subsequent silage bags;

[0073] By adjusting the extension distance of the screw rod, the movement stroke of the arc-shaped bag support plate can be adjusted;

[0074] When the silage bag is folded and needs to be removed from the folding machine, the telescopic cylinder drives the control plate 17 to rise, opens the avoidance hole 18, releases the limit of the control plate 17 on the limit seat 15, and the driving cylinder drives the arc-shaped bag support plate to return with a large stroke to avoid the silage bag;

[0075] By setting a right-angle commutator 20, the two vertical screws 21 and the horizontal screw 22 are driven to rotate synchronously by a reducer, so that the expansion plate 19 is synchronously driven to move inward and the two supporting outer plates 3 move toward each other to achieve contraction. Not only is the structure simple, but the operation is stable, and the support stability of the silage bag is improved;

[0076] Each time a layer of silage bag is folded, the reducer drives the right-angle commutator 20 to work, so as to drive the expansion plate 19 to move inward and the two supporting outer plates 3 to move toward each other for a short distance, so as to realize continuous folding and supporting of the silage bag, which is convenient and quick.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. The travel limit mechanism of the silage bag folding machine is characterized by: The invention comprises a frame (1) arranged in the longitudinal direction, a spreading plate (19) being provided on one side of the frame (1) for horizontal sliding in the transverse direction, two supporting outer plates (3) being provided on the outer wall of the spreading plate (19) for vertical sliding and moving in opposite directions, and a linkage mechanism for driving the spreading plate (19) and the two supporting outer plates (3) to move synchronously; The supporting outer plate (3) is provided with a contraction stroke limiting structure for limiting the movement stroke of the expansion plate (19) and the supporting outer plate (3); The frame (1) is provided with a mounting plate which slides horizontally in the longitudinal direction, and the mounting plate is provided with a feeding plate (2) which slides horizontally in the transverse direction. The frame (1) is provided with a longitudinal travel limit structure which limits the movement travel of the mounting plate, and the mounting plate is provided with a transverse travel limit structure which limits the movement travel of the feeding plate (2).

2. The travel limiting mechanism of the silage bag folding machine according to claim 1, characterized in that: A longitudinal guide rail (4) is fixedly connected to the frame (1) in the longitudinal direction, and a longitudinal guide seat (5) is fixedly connected to the mounting plate and is slidably constrained on the longitudinal guide rail (4).

3. The travel limiting mechanism of the silage bag folding machine according to claim 2, characterized in that: The longitudinal stroke limit structure comprises a longitudinal stroke position sensor (6) fixedly connected to the frame (1), the longitudinal stroke position sensor (6) being close to the end of the longitudinal guide rail (4) facing the expansion plate (19), and a longitudinal detection plate (7) matching the longitudinal stroke position sensor (6) being fixedly connected to the longitudinal guide seat (5).

4. The travel limiting mechanism of the silage bag folding machine according to claim 3 is characterized in that: Two guide pillars (10) are fixedly connected horizontally from top to bottom on the inner wall of the supply plate (2); a guide cylinder (11) is fixedly connected to the inner wall of the mounting plate corresponding to each guide pillar (10); and the guide pillar (10) is slidably mounted on the guide cylinder (11).

5. The travel limiting mechanism of the silage bag folding machine according to claim 4, characterized in that: The lateral stroke limiting structure comprises two lateral stroke position sensors (13) fixedly connected in parallel to the outer wall of the guide cylinder (11); the other end of the guide column (10) is fixedly connected to an L-shaped frame (12); and the frame (12) is fixedly connected to a lateral detection plate (14) matching the lateral stroke position sensors (13).

6. The travel limiting mechanism of the silage bag folding machine according to claim 5, characterized in that: The linkage mechanism comprises a right-angle steering gear fixed on the inner wall of the expansion plate (19), the right-angle steering gear being provided with two coaxially arranged vertical output ends and a horizontal output end, the two vertical output ends being respectively connected to a vertical lead screw (21), the horizontal output end being connected to a horizontal lead screw (22), the horizontal lead screw (22) being threadedly connected to the frame (1), and the two vertical lead screws (21) being correspondingly threadedly connected to the two supporting outer plates (3).

7. The travel limiting mechanism of the silage bag folding machine according to claim 6, characterized in that: Two vertical guide rails (24) are fixedly connected in parallel to the outer wall of the expansion plate (19), and a vertical guide seat (23) matching the guide rails is fixedly connected to the inner wall of the supporting outer plate (3).

8. The travel limiting mechanism of the silage bag folding machine according to claim 7, characterized in that: The retraction stroke limit structure comprises two vertical stroke position sensors (25) fixedly connected to the inner wall of the expansion plate (19) in parallel from top to bottom, a horizontal rod (26) fixedly connected to the vertical guide seat (23), and a vertical detection plate (27) matching the vertical stroke position sensors (25) fixedly connected to the horizontal rod (26).

9. The travel limiting mechanism of the silage bag folding machine according to claim 8, characterized in that: A transverse cylinder (9) is fixedly connected horizontally along the inner wall of the mounting plate, and the telescopic end of the transverse cylinder (9) is fixedly connected to the inner wall of the supply plate (2).

10. The travel limiting mechanism of the silage bag folding machine according to claim 9, characterized in that: A longitudinal cylinder (8) is horizontally fixed to one end of the frame (1), and a telescopic end of the longitudinal cylinder (8) is fixed to the mounting plate.

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