Intermittent conveying bag folding machine for bag bodies with middle-folded bag bottoms

Abstract

The utility model relates to the field of bag folding machines, and discloses an intermittent conveying bag folding machine for bag bodies with middle-folded bag bottoms, which comprises a rack and a conveying power source used for conveying the bag bodies, a bag body bearing device, a bag body pressing device and a side conveying belt are arranged on the rack, a side inserting plate and a bottom inserting plate are further arranged on the rack, a conveying channel is provided with a bag folding station, and the bag folding station is provided with a bottom inserting plate. When the bag body is conveyed to the bag folding station, the bag body bearing device and the side conveying belt stop conveying so that the bag body can be kept still in the horizontal direction, at least one of the bag body bearing device and the bag body pressing device ascends and descends to move in the bag body compression direction, and in the vertical direction, the bag body pressing device presses the bag body downwards. The side inserting plates and the bottom inserting plates are always aligned with the positions of the side edge middle crease lines and the bottom middle crease lines of the bag body in the bag folding process of the bag body. Dynamic folding in the prior art is changed into static folding, dynamic friction between the side inserting plate and the bag body and between the bottom inserting plate and the bag body is avoided, conveying in the horizontal direction is stopped when the bag body is folded, and the attractiveness of bag body machining is improved.

Description

Technical Field

[0001] The utility model relates to the field of bag folding machines, in particular to an intermittent conveying bag folding machine for bag bottom mid-fold type bags. Background Art

[0002] The bag body with a folded bottom, including paper bags, non-woven bags, etc., has a fold line on the side located in the middle of the bag body, and a fold line on the bottom also located on the center line of the bag bottom, and the side and bottom of the bag body are folded inward to form a compressed form with convex edges on both sides and a concave fold line in the middle. This form is convenient for the storage and transportation of the bag body. In the automated production process, the bag folding needs to be performed with the aid of a bag folding machine, such as the Chinese invention patent with application number "CN201910664638.8", publication number "CN110395008A", and patent name "double-channel non-woven three-side folding bag device", which discloses "double A three-side folding bag device for nonwoven fabrics includes a wall panel, a slope-type clamping and conveying mechanism, and a side inner folding mechanism. A bottom inner folding mechanism is installed on the wall panel and at the side of the side inner folding mechanism. The bottom inner folding plate of the bottom inner folding mechanism and the side inner folding plate of the side inner folding mechanism are in an upper and lower adjacent state. An inner folding mounting plate installed on the wall panel is installed on the inner folding mounting plate. The bottom inner folding power transmission source is installed with a swing arm power source through a swing arm seat. The swing arm power source is connected to the bottom inner folding plate through a swing arm. The bottom inner folding plate is located adjacent to and below the side inner folding plate. The bottom of the bag body is folded by the inner folding mounting plate. The inner folding mounting plate is movable. The movement of the inner folding mounting plate needs to be the same as the conveying direction of the bag body but with a speed difference. The speed drop causes the inner folding mounting plate to generate an inward force on the bag bottom. The side inner folding plate is placed inwardly and obliquely. The inner folding installation plate needs to move in three directions: horizontal front and back, horizontal left and right, and vertical direction. Because the inner folding installation plate needs to be located at the center line of the side of the three-dimensional bag to be folded inward, the side inner folding plate needs to be located at the center crease line of the bottom surface of the bag body, but the area from the bag inlet to the bag outlet becomes narrower and narrower towards the bag outlet, and the height of the center line in the vertical direction becomes lower and lower during the folding process of the bag body. Therefore, the required conveyor belt has a larger taper angle at the entrance and a smaller taper angle at the exit. The side panels on the left and right sides are parallel and fixed. The movement of the bottom inner folding plate is similar to the way it is thrown in, and it needs to be carried out at a faster speed, otherwise it will cause position deviation. Since the side inner folding plate is fixed, it will generate a large friction force when the bag body moves forward, which is easy to damage the bag body. If the friction is too large, it will also cause the bag body to shift forward and backward, resulting in poor bag folding effect. Utility Model Content

[0003] The utility model aims at the shortcomings of the prior art and provides a bag folding machine which can improve the folding effect by preventing the bag body with a folded bottom from rubbing against the folding plates at the side and bottom during the conveying process.

[0004] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0005] The intermittent conveying bag folding machine for bag bottom center folding type bag body comprises a frame and a conveying power source for conveying the bag body. The frame is provided with a bag body supporting device, a bag body pressing device and a side conveyor belt. A conveying channel for the bag body to pass through is formed between the bag body supporting device and the bag body pressing device. The side conveyor belt is arranged on the left and right sides of the conveying channel, and is used to limit the bag body to the left and right and provide friction for conveying the bag body forward. The running speed of the side conveyor belt is the same as the conveying speed of the bag body. A discharging device is arranged at the outlet of the conveying channel. The frame is also provided with a bag body supporting device, a bag body pressing device and a side conveyor belt. There are side inserts and bottom inserts, and a bag folding station is set on the conveying channel. When the bag is conveyed to the bag folding station, the bag support device and the side conveyor belt stop conveying to keep the bag motionless in the horizontal direction. The side inserts and the bottom inserts move toward the middle crease line of the side edge of the bag and the middle crease line of the bottom of the bag respectively. At least one of the bag support device and the bag pressing device moves up and down in the direction of bag compression. In the vertical direction, the side inserts and the bottom inserts always keep aligned with the middle crease line of the side edge of the bag and the middle crease line of the bottom of the bag respectively during the bag folding process. The side inserts are parallel to the side of the bag and can move horizontally left and right or can move horizontally and up and down, so that there is no friction between the side inserts and the bag due to relative forward and backward movement, but only provides inward pressure. The side conveyor belt plays a role of side limit, or a role of forward conveying. Because especially for some smoother bags, there needs to be a forward friction force on the left and right sides to assist the bag conveying. The bag support device and the side conveyor belt stop conveying, so that the bag is conveyed intermittently, that is, the horizontal conveying is completely stopped during the bag folding process, so as to avoid the influence of the friction between the bag and the side folding plate and the bottom folding plate, thereby improving the quality of bag folding. If the bag pressing device is also involved in the bag conveying, the bag pressing device also stops conveying the bag. The side conveyor belt limits the left and right positions of the bag and plays a role in shaping the bag, correcting the bag shape so that the bag will not be skewed left and right during the conveying and bag folding process.

[0006] Preferably, when the bag is folded at the bag folding station, the bag pressing device descends and the bag supporting device ascends to cooperate in compressing the bag.

[0007] Preferably, the downward movement of the bag pressing device and the upward movement of the bag supporting device are symmetrical, so that when the bag is folded at the bag folding station, the center crease lines on the side and the bottom are kept at the same height.

[0008] Preferably, the side plug plate is installed on the transverse guide rail 1 through the slider 1, the bottom plug plate is installed on the transverse guide rail 2 through the slider 2, the transverse guide rail 2 is slidably set on the front and rear guide rails, the side plug plate is connected to the side plug power source, the bottom plug plate is connected to the transverse movement power source, and the transverse guide rail 2 is connected to the bottom plug power source.

[0009] Preferably, the bag body supporting device is a conveyor belt, which is mounted on rollers on the front and rear sides. Lifting power sources are respectively arranged on the left and right sides of the rollers. The lifting power source includes upper and lower synchronous wheels and synchronous belts mounted on the upper and lower synchronous wheels. The synchronous wheels are connected to a driving member for driving them to rotate. The left and right ends of the rollers are mounted on the synchronous belts through mounting blocks and move up and down with the synchronous belts.

[0010] Preferably, the bag pressing device is a conveyor belt, and the conveyor belt of the bag pressing device is respectively mounted on the rollers on the front and rear sides. The lifting power source includes upper and lower synchronous wheels and synchronous belts mounted on the upper and lower synchronous wheels. The synchronous wheels are connected to a driving member that drives them to rotate. The left and right ends of the rollers are installed on the synchronous belts through mounting blocks and move up and down with the synchronous belts.

[0011] Preferably, the upper and lower rollers are respectively provided with conveyor belts of the bag supporting device and the bag pressing device, and the upper roller and the lower roller are respectively installed on the front and rear sides of the annular synchronous belt so that the two move in opposite directions.

[0012] Preferably, the upward and downward movements of the bag support device and the bag pressing device are symmetrical relative to the central plane of the bag, and the upward and downward movements of the bag support device and the bag pressing device compress the front and rear parts of the bag with a time difference. Generally speaking, the bottom of the bag is compressed and folded first, and the bag mouth is compressed and folded subsequently, which is conducive to improving the quality of bag folding.

[0013] Preferably, the discharging device is a discharging conveyor belt arranged up and down, the discharging conveyor belt is connected to a discharging power source, and the discharging power source and the conveying power source are the same power source or are independent of each other.

[0014] Preferably, the side insert plates and the bottom insert plates extend horizontally from the middle of the side conveyor belts respectively.

[0015] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0016] The utility model changes the dynamic folding of the prior art into a static folding, thus avoiding the dynamic friction between the side inserting plates, the bottom inserting plates and the bag body, stopping the horizontal conveyance of the bag body when folding the bag, thus preventing the influence of friction on the bag body and improving the aesthetics of the bag body processing.

[0017] Since the bag body is pressurized synchronously in the front and back, left and right, and up and down directions, and the side inserts and bottom inserts are always aligned with the center fold line to guide its folding, the auxiliary side inserts have a shaping effect on the bag body, and there is basically no error in the compression of the bag body, which is beneficial to improving the compression quality of the bag body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model in a top view;

[0020] Figure 3 It is a structural schematic diagram of the utility model from another angle.

[0021] Figure 4 It is a structural schematic diagram of the side conveyor belt, side insert plate and bottom insert plate of the utility model;

[0022] Figure 5 The utility model is a structural schematic diagram of the bag body supporting device, the bag body pressing device and the conveying power source being connected.

[0023] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. frame; 2. bag body supporting device; 21. conveying power source; 3. bag body pressing device; 4. side conveyor belt; 5. discharge device; 51. discharge power source; 6. side plug plate; 61. slider one; 62. transverse guide rail one; 63. side plug power source; 7. bottom plug plate; 71. slider two; 72. transverse guide rail two; 73. front and rear guide rails; 74. transverse moving power source; 75. bottom plug power source; 81. roller; 82. synchronous wheel; 83. synchronous belt; 84. driving member; 85. mounting block. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Example

[0025] Intermittent conveying bag folding machine for bag bottom folding type bag body, such as Figure 1-3As shown, it includes a frame 1 and a conveying power source 21 for conveying bags. The frame 1 is provided with a bag supporting device 2, a bag pressing device 3 and a side conveyor belt 4. A conveying channel for the bag to pass through is formed between the bag supporting device 2 and the bag pressing device 3. The side conveyor belt 4 is arranged on the left and right sides of the conveying channel to limit the bag to the left and right and provide friction for conveying the bag forward. The running speed of the side conveyor belt 4 is the same as the bag conveying speed. A discharging device 5 is arranged at the outlet of the conveying channel; the frame 1 is also provided with a side plug plate 6 and a bottom The insert plate 7 and the conveying channel are provided with a bag folding station. When the bag is conveyed to the bag folding station, the bag support device 2 and the side conveyor belt 4 stop conveying to keep the bag motionless in the horizontal direction. The side insert plate 6 and the bottom insert plate 7 move toward the middle crease line of the side edge of the bag and the middle crease line of the bottom of the bag respectively. At least one of the bag support device 2 and the bag pressing device 3 moves upward and downward in the direction of bag compression. In the vertical direction, the side insert plate 6 and the bottom insert plate 7 always keep aligned with the middle crease line of the side edge of the bag and the middle crease line of the bottom of the bag respectively during the bag folding process. There are many ways to convey the bag, and the conveying power source 21 can have one or more groups. As one embodiment, the bag support device 2 is connected to the conveying power source 21. When the bag pressing device 3 is a conveyor belt, the bag pressing device 3 located above the bag can also be connected to the conveying power source 21 to assist the bag conveying. Furthermore, the side conveyor belts 4 on the left and right sides of the bag body can also be connected to the conveying power source 21 to assist the conveying of the bag body or be connected to the conveying power source 21 alone to drive the conveying of the bag body. The operating principle is: when the bag body enters the conveying channel, the bag mouth is in an open state, at this time, the contact surface of the bag body supporting device 2, the bag body pressing device 3 and the bag body is parallel or nearly parallel, and at least one of the bag body supporting device 2 and the bag body pressing device 3 compresses the bag body, and at the same time, the side insert plate 6 and the bottom insert plate 7 are inserted into the middle fold line of the left and right sides of the bag body and the middle fold line of the bottom. When the bag bottom or / and the bag mouth are compressed and folded, the side insert plate 6 and the bottom insert plate 7 are aligned with the pre-processed side middle fold line of the bag body and the middle fold line of the bottom and pushed inward, so that the bag body forms a state in which the middle of the bag body and the bag side are folded inward. The relative movement speeds of the bag supporting device 2 and the bag pressing device 3 are kept in balance with the insertion speeds of the side insert plates 6 and the bottom insert plates 7, so that the bag can be folded completely according to the preset state without being affected by factors such as conveying friction, thereby improving the yield rate.

[0026] As one of the embodiments, when the bag is folded at the bag folding station, the bag pressing device 3 descends and the bag supporting device 2 rises to cooperate in compressing the bag. In this way, the best solution is that the action of the bag pressing device 3 descending and the action of the bag supporting device 2 rising are symmetrical, so that when the bag is folded at the bag folding station, the middle crease line of the side and the middle crease line of the bottom are kept at the same height. If the action of the bag pressing device 3 descending and the action of the bag supporting device 2 rising are asymmetrical, or as other embodiments, only the bag pressing device 3 descends alone or the bag supporting device 2 rises alone, in this case, in order to make the side plug plate 6 and the bottom plug plate 7 always keep aligned with the middle crease line of the side and the middle crease line of the bottom of the bag during the bag folding process, the side plug plate 6 and the bottom plug plate 7 should move horizontally while performing a certain vertical movement according to the compression progress of the bag, and the vertical movement trajectory can be guided by a guide rail, or can be achieved by swinging a connecting rod or a crank to achieve horizontal and vertical movement or other conventional settings of other people in the field. Since the conveyance of the bag body stops when it is folded in the middle, the bottom of the bag body being located at the front side or the rear side of the bag body will not affect the folding in the middle of the bag body.

[0027] As for the shapes of the side insert plate 6 and the bottom insert plate 7, if both are arranged on the side of the frame 1, the side insert plate can be of any shape, as long as the edge on one side facing the bag body is a straight line parallel to the crease line in the side of the bag body, and the shape of the bottom insert plate 7 is L-shaped or U-shaped, because it will be inserted into the bottom of the bag body by bypassing the side edge of the bag bottom later, and its insertion direction is opposite to or the same as the conveying direction of the bag body, and the edge of the inserted part in contact with the bag body is usually a straight line.

[0028] like Figure 4 As shown, the side insert plate 6 is installed on the transverse guide rail 1 62 through the slider 1 61, the bottom insert plate 7 is installed on the transverse guide rail 2 72 through the slider 2 71, the transverse guide rail 2 72 is slidably set on the front and rear guide rails 73, the side insert plate 6 is connected to the side insert power source 63, the bottom insert plate 7 is connected to the transverse movement power source 74, and the transverse guide rail 2 72 is connected to the bottom insert power source 75.

[0029] As one embodiment, the bag body supporting device 2 is a conveyor belt, which is sleeved on the rollers 81 on the front and rear sides, and the left and right sides of the rollers 81 are respectively provided with lifting power sources, which include synchronous wheels 82 arranged up and down and synchronous belts 83 sleeved on the upper and lower synchronous wheels 82, and the synchronous wheels 82 are connected to a driving member 84 for driving the rotation thereof, and the left and right ends of the rollers 81 are installed on the synchronous belts 83 through mounting blocks 85 and move up and down with the synchronous belts 83. As another embodiment, the bag body supporting device 2 is a chain, which can be connected to the conveying power source 21 through a push block to push the bag body for transportation.

[0030] As one embodiment, the bag body supporting device 2 is a conveyor belt, and the conveyor belt of the bag body pressing device 3 is respectively mounted on the rollers 81 on the front and rear sides, and the lifting power source includes synchronous wheels 82 arranged up and down and synchronous belts 83 mounted on the upper and lower synchronous wheels 82, and the synchronous wheels 82 are connected to a driving member 84 for driving the rotation thereof, and the left and right ends of the roller 81 are mounted on the synchronous belt 83 through mounting blocks 85 and move up and down with the synchronous belt 83. When the bag body supporting device 2 and the bag body pressing device 3 are both conveyor belts, the two can simultaneously play the role of conveying and folding bags, and it is also convenient to keep the bag in a compressed state and send it out after the bag folding is completed.

[0031] The upper and lower rollers 81 are respectively provided with conveyor belts of the bag supporting device 2 and the bag pressing device 3. The upper roller 81 and the lower roller 81 are respectively installed on the front and rear sides of the annular synchronous belt 83 so that the two move in opposite directions.

[0032] like Figure 5 As shown, as one embodiment, the bag body supporting device 2 and the bag body pressing device 3 both move, and the contact surfaces of the bag body supporting device 2, the bag body pressing device 3 and the bag body are all horizontal, the bag body supporting device 2 rises as a whole, and the bag body pressing device 3 falls as a whole, and always remains horizontal. As another embodiment, the relative lifting and lowering movements of the bag body supporting device 2 and the bag body pressing device 3 are symmetrical relative to the central plane of the bag body, and the relative lifting and lowering movements of the bag body supporting device 2 and the bag body pressing device 3 have a time difference in the compression of the front and rear parts of the bag body. This method can make the bottom of the bag body or the bag mouth part fold first, and the other side is slower. For example, the bag body supporting device 2 and the bag body pressing device 3 are both conveyor belts, and the front and rear lifting of the conveyor belt has a sequence, the side close to the bottom of the bag is pressed first, and the pressing action of the bag mouth lags behind the side of the bottom of the bag, so that the conveyor belt is in a state of small front and large back during the pressing action.

[0033] The discharging device 5 is a discharging conveyor belt arranged up and down, and the discharging conveyor belt is connected to a discharging power source 51, and the discharging power source 51 and the conveying power source 21 are the same power source or independent of each other. When the bag body passes between the upper and lower discharging conveyor belts, the discharging conveyor belt can further flatten the bag body.

[0034] The side insert plate 6 and the bottom insert plate 7 extend horizontally from the middle of the side conveyor belt 4 respectively.

[0035] After the middle fold is completed, the side insert plate 6 and the bottom insert plate 7 return to their original positions, and the folded bag is sent to the discharging device 5 and the next bag is sent to the bag folding station to make way. Compared with the prior art, the side insert plate 6 and the bottom insert plate 7 need to return to their original positions in the horizontal direction, so it does not affect the processing efficiency of the bag middle fold, and increases the accuracy and yield rate of the bag middle fold.

[0036] In the description of the present utility model, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. An intermittent conveying bag folding machine for bottom-folded bags, comprising a frame (1) and a conveying power source (21) for conveying the bags, the frame (1) being provided with a bag supporting device (2), a bag pressing device (3) and a side conveyor belt (4), a conveying channel for the bags to pass through being formed between the bag supporting device (2) and the bag pressing device (3), the side conveyor belt (4) being provided on the left and right sides of the conveying channel, for limiting the position of the bags on the left and right sides and providing friction for conveying the bags forward, the running speed of the side conveyor belt (4) being the same as the conveying speed of the bags, and a discharging device (5) being provided at the outlet of the conveying channel; the frame (1) being further provided with a side insert plate (6) and a bottom insert plate (7), characterized in that: A bag folding station is arranged on the conveying passage. When the bag is conveyed to the bag folding station, the bag supporting device (2) and the side conveying belt (4) stop conveying so that the bag remains stationary in the horizontal direction. The side inserting plate (6) and the bottom inserting plate (7) move into the bag towards the middle folding line of the side edge of the bag and the middle folding line of the bottom respectively. At least one of the bag supporting device (2) and the bag pressing device (3) moves upward and downward in the direction of bag compression. In the vertical direction, the side inserting plate (6) and the bottom inserting plate (7) always keep aligned with the middle folding line of the side edge of the bag and the middle folding line of the bottom respectively during the bag folding process.

2. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 1, characterized in that: When the bag is folded at the bag folding station, the bag pressing device (3) descends and the bag supporting device (2) rises to cooperate in compressing the bag.

3. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 2, characterized in that: The downward movement of the bag pressing device (3) and the upward movement of the bag supporting device (2) are symmetrical, so that when the bag is folded at the bag folding station, the middle fold line of the side and the middle fold line of the bottom are kept at the same height.

4. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 1, characterized in that: The side plug plate (6) is mounted on the transverse guide rail (62) via a slider (61), the bottom plug plate (7) is mounted on the transverse guide rail (72) via a slider (71), the transverse guide rail (72) is slidably arranged on the front and rear guide rails (73), the side plug plate (6) is connected to a side plug power source (63), the bottom plug plate (7) is connected to a transverse movement power source (74), and the transverse guide rail (72) is connected to a bottom plug power source (75).

5. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 1, characterized in that: The bag body supporting device (2) is a conveyor belt, which is sleeved on rollers (81) at the front and rear sides. A lifting power source is respectively arranged on the left and right sides of the roller (81). The lifting power source comprises synchronous wheels (82) arranged above and below and a synchronous belt (83) sleeved on the upper and lower synchronous wheels (82). The synchronous wheel (82) is connected to a driving member (84) for driving the synchronous wheel to rotate. The left and right ends of the roller (81) are mounted on the synchronous belt (83) through mounting blocks (85) and move up and down with the synchronous belt (83).

6. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 1 or 5, characterized in that: The bag pressing device (3) is a conveyor belt, and the conveyor belt of the bag pressing device (3) is respectively mounted on rollers (81) at the front and rear sides. The lifting power source comprises synchronous wheels (82) arranged upper and lower and synchronous belts (83) mounted on the upper and lower synchronous wheels (82). The synchronous wheels (82) are connected to a driving member (84) for driving the synchronous wheels to rotate. The left and right ends of the rollers (81) are mounted on the synchronous belts (83) through mounting blocks (85) and move up and down along with the synchronous belts (83).

7. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 6, characterized in that: The upper and lower rollers (81) are respectively sleeved with conveyor belts of a bag body supporting device (2) and a bag body pressing device (3). The upper roller (81) and the lower roller (81) are respectively installed on the front and rear sides of the annular synchronous belt (83) so that the two move in opposite directions.

8. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 7, characterized in that: The relative lifting and lowering movements of the bag body supporting device (2) and the bag body pressing device (3) are symmetrical with respect to the central plane of the bag body, and the relative lifting and lowering movements of the bag body supporting device (2) and the bag body pressing device (3) cause a time difference in the compression of the front and rear parts of the bag body.

9. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 1, characterized in that: The discharge device (5) is a discharge conveyor belt arranged up and down, the discharge conveyor belt is connected to a discharge power source (51), and the discharge power source (51) and the conveying power source (21) are the same power source or are independent of each other.

10. The intermittent conveying bag folding machine for bag bottom center folding type bag according to claim 1, characterized in that: The side insert plate (6) and the bottom insert plate (7) extend horizontally from the middle of the side conveyor belt (4) respectively.

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