Transmission mechanism and food bag production device

Abstract

The present invention discloses a transmission mechanism and a food bag production device, comprising a main body, the main body is located between a material receiving position and a conveying position, and the main body is provided with: a transmission plate, which is provided with a plurality of transmission plates, and the same end of the plurality of transmission plates is configured with an arc-shaped portion, and the arc-shaped portion is used to receive food bags at the material receiving position; a flip mechanism, which is used to drive the plurality of transmission plates to move from the material receiving position to a horizontal position and a flattening position in sequence, in which the food bags received by the transmission plates are moved to the conveying position in the horizontal position; in the flattening position, the transmission plates flatten the food bags at the conveying position. The present invention provides a transmission mechanism, in which, under the action of the flip mechanism, the plurality of transmission plates can move in sequence between the material receiving position, the horizontal position and the flattening position.

Description

Technical Field

[0001] The invention relates to the technical field of food bag production, and in particular to a transmission mechanism and a food bag production device. Background Art

[0002] Food bags are generally made of PE polyethylene or PP polypropylene. In the process of food bag production, they need to go through processes such as film blowing, curing, slitting and bundling. Bundling is generally done by using rubber bands to tighten the rolled food bags. The bundled food bags are square-like (the opposite sides of the food bags form arc edges when they are rolled).

[0003] For example, the authorized patent with the authorization announcement number CN209834081U and the authorization announcement date December 24, 2019, and the name of "A Plastic Bag Rubber Band Machine", includes a frame and at least one plastic bag clamping mechanism, a rubber band feeding mechanism, a rubber band transfer mechanism, a rubber band opening and closing mechanism and at least one rubber band scraping mechanism arranged on the frame; the plastic bag clamping mechanism is used to clamp the rolled plastic bags; the rubber band feeding mechanism is used to feed the rubber bands one by one; the rubber band transfer mechanism is used to clamp the rubber bands fed by the rubber band feeding mechanism and put them into the rubber band opening and closing mechanism; the rubber band opening and closing mechanism is used to open the rubber bands sleeved thereon; the rubber band scraping mechanism is used to scrape the opened rubber bands along the direction of the plastic bag clamping mechanism; the plastic bag clamping mechanism is also used to transfer the bundled plastic bags to the discharge port for discharging them.

[0004] In the prior art, the bundled food bags are generally moved from the discharge position to the conveying position through a transmission mechanism, such as the food bags sliding onto the conveyor belt through the discharge plate. During this process, it is obvious that when the bundled food bags fall onto the conveyor belt, their falling positions, angles and shapes cannot be kept consistent, making the food bags on the conveyor belt relatively scattered, which will have a negative impact on the subsequent packaging of the food bags. Summary of the invention

[0005] The object of the present invention is to provide a transmission mechanism and a food bag production device to solve the above-mentioned deficiencies in the prior art.

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

[0007] A transmission mechanism comprises a main body, wherein the main body is located between a material receiving position and a conveying position, and the main body is provided with:

[0008] A plurality of transmission plates are provided, and the same end of the plurality of transmission plates is configured with an arc-shaped portion, and the arc-shaped portion is used to receive the food bag at the receiving position;

[0009] The flipping mechanism is used to drive the plurality of transmission plates to move from the receiving position to the horizontal position and the flattening position in sequence. In the horizontal position, the food bags carried by the transmission plates move to the conveying position; in the flattening position, the transmission plates flatten the food bags at the conveying position.

[0010] The above-mentioned transmission mechanism, the flip mechanism includes a rotating shaft, a plurality of transmission plates are arranged in parallel along the length direction of the rotating shaft, moving blocks are arranged on the opposite sides of the main body, the two moving blocks are respectively mounted on the two ends of the rotating shaft, and the opposite sides of the main body are constructed with inclined grooves, and the two moving blocks are respectively slidably connected in the two inclined grooves.

[0011] The above-mentioned transmission mechanism, the flip mechanism includes two first gears fixed at both ends of the rotating shaft, a driving rod is provided on the main body, a first rack is provided on the driving rod, an elastic telescopic rod is provided between the driving rod and the first rack, and the first rack is meshed with the first gear.

[0012] In the above-mentioned transmission mechanism, a first spring is fixed to the inner wall of the inclined groove, the other end of the first spring is fixed to the corresponding moving block, a connecting rod is fixed to the driving rod, and connecting grooves are constructed on both opposite sides of the main body.

[0013] In the above-mentioned transmission mechanism, a connecting block is fixed on the moving block, a trigger rod is inserted on the connecting block, a brake block is fixed at one end of the trigger rod, a second spring is sleeved on the trigger rod, two ends of the second spring are respectively fixed to the brake block and the connecting block, and a trigger block is arranged on the connecting rod.

[0014] The above-mentioned transmission mechanism also includes a material receiving rack, a movable groove is constructed on the main body, and the material receiving rack is slidably connected in the movable groove. A driving mechanism is arranged in the main body, which is used to drive the material receiving rack to move along the movable groove. As the number of food bags stacked on the material receiving rack increases, the power of the material receiving rack based on the driving mechanism gradually decreases.

[0015] In the above-mentioned transmission mechanism, the main body is provided with an outlet connected to the moving groove.

[0016] The above-mentioned transmission mechanism, the driving mechanism includes an electric push rod and a lifting plate fixed on the top of the electric push rod.

[0017] The above-mentioned transmission mechanism, the driving mechanism includes a second gear rotatably connected to the main body, a second rack is fixed on the driving rod, the second gear is meshed with the second rack, a third gear is rotatably connected to the main body, a third rack is provided on the material receiving rack, the third gear is meshed with the third rack, and a ratchet mechanism is provided between the second gear and the third gear, which is used to intermittently drive the third gear to rotate in one direction to realize intermittent descent of the material receiving rack.

[0018] A food bag production device comprises any one of the transmission mechanisms described above.

[0019] In the above technical solution, the present invention provides a transmission mechanism, under the action of the flip mechanism, multiple transmission plates can move in sequence between the receiving position, the horizontal position and the flattening position, which can bring the following benefits:

[0020] Firstly, when the transmission plate is in the receiving position, the arc portion on the transmission plate can contact an arc edge of the food bag, so that the food bag can be stably received and deformation of the food bag during the receiving process can be avoided as much as possible;

[0021] Secondly, when the transmission plate moves to a horizontal position, the food bags rotate to a horizontal state with the transmission plate and fall to the conveying position, so that the food bags discharged in sequence can fall to the same conveying position and maintain a horizontal angle when falling to the conveying position;

[0022] Thirdly, when the transmission plate moves from the horizontal position to the flattening position, the transmission plate can press the food bag to flatten the food bag, which is convenient for subsequent packaging of the food bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of a connection groove provided in an embodiment of the present invention;

[0026] Figure 3 The embodiment of the present invention provides Figure 2 The enlarged schematic diagram at A in the middle;

[0027] Figure 4 A cross-sectional view of an elastic telescopic rod provided in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the overall structure provided for another embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the structure of a material receiving rack and a driving mechanism provided in an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the structure of a driving mechanism provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic structural diagram of a ratchet mechanism provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Main body; 2. Transmission plate; 201. Arc-shaped part; 3. Rotating shaft; 4. Moving block; 5. First gear; 6. Driving rod; 7. First rack; 8. Elastic telescopic rod; 81. Inner rod; 82. Sleeve rod; 83. Telescopic spring; 9. Inclined groove; 10. First spring; 11. Connecting rod; 12. Connecting groove; 13. Connecting block; 14. Trigger rod; 15. Braking block; 16. Second spring; 17. Trigger block; 18. Adapter groove; 19. Magnet block; 20. Material receiving rack; 21. Slide plate; 22. Slide groove; 23. Exit; 24. Second gear; 25. Second rack; 26. Third gear; 27. Third rack; 28. Ratchet; 29. ​​Active pawl. Implementation

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Reference Figure 1-8 An embodiment of the present invention provides a transmission mechanism, including a main body 1, on which a transmission plate 2 and a flipping mechanism are arranged, wherein the transmission plate 2 is provided with a plurality of transmission plates, and the same end of the plurality of transmission plates 2 is configured with an arc portion 201, wherein the arc portion 201 is used to receive food bags at a receiving position; the flipping mechanism is used to drive the plurality of transmission plates 2 to move from the receiving position to a horizontal position and a flattening position in sequence, wherein in the horizontal position, the food bags received by the transmission plate 2 are moved to a conveying position; and in the flattening position, the transmission plate 2 flattens the food bags at the conveying position.

[0036] Specifically, after the production of food bags is completed, it includes a discharging position and a conveying position. The discharging position is generally a plurality of discharging plates for guiding the food bags to move out, and the conveying position is generally an end of one side of the conveyor belt. This is the prior art and will not be elaborated on. The innovation of this embodiment is that the transmission plate 2 includes a plate body and an arc-shaped portion 201 arranged at one end of the plate body. The arc-shaped portion 201 has an arc-shaped bearing cavity to receive the food bag, and the plate body receives rotational drive and reciprocating drive at the end where the arc-shaped portion 201 is arranged. In the movement stroke of the transmission plate 2, it includes a receiving position, a horizontal position and a flattening position in sequence, and the receiving position of the transmission plate 2 corresponds to the feeding position of the food bag. In the entire conveying device, a plurality of transmission plates 2 are arranged between the discharging position and the conveying position, and the plurality of transmission plates 2 are arranged alternately with the plurality of discharging plates, that is, the overall arrangement is in the form of one transmission plate 2 arranged between two discharging plates, and one discharging plate arranged between the two transmission plates 2. The transmission plate 2 can be reciprocated in sequence between the receiving position, the horizontal position and the flattening position by means of a flipping mechanism (the flipping mechanism can drive the plurality of transmission plates 2 to rotate and move synchronously, such as by setting a plurality of power units, and the plurality of power units operate synchronously, and the power unit can be a combination of a micro motor and an electric telescopic rod, so as to drive the transmission plate 2 to rotate and move in a composite motion, and the composite motion of rotation and movement and its driving method are prior arts and will not be described in detail). Here, the horizontal position of the transmission plate 2 is higher than the flattening position of the transmission plate 2. When the transmission plate 2 is in the receiving position, the plurality of transmission plates 2 are arranged alternately with the plurality of discharging plates and are all in the same plane and the two are arranged tilted as a whole, and the lower part of the discharging plate and the upper part of the transmission plate 2 (the end away from the arc-shaped portion 201) are arranged alternately ( Figure 5 As shown in the figure, the bundled food bags can slide from the discharge plate to the transmission plate 2, and the arc-shaped portion 201 on the transmission plate 2 can contact an arc-shaped edge of the food bag, so that the food bags can be stably received and deformation of the food bags during the receiving process can be avoided as much as possible; then the transmission plate 2 rotates from the receiving position to the horizontal position, at which time the food bags rotate to a horizontal state with the transmission plate 2, and this position is also the conveying position of the food bags, so that the continuously conveyed food bags can fall to the same conveying position, and maintain a horizontal angle when falling to the conveying position. It should be additionally explained that the angle of rotation of the transmission plate 2 at this time is When the angle is greater than 90 degrees, that is, the plate body of the transmission plate 2 rotates to the top of the food bag, a part of the food bag is located in the arc-shaped bearing cavity on the arc-shaped portion 201, and the other part is located on the conveyor belt; in the process of the transmission plate 2 moving from the horizontal position to the flattening position, the transmission plate 2 moves vertically downward by a very small amplitude, such as less than 1 cm, so as to press the food bag, thereby squeezing the opposite sides of the food bag through multiple transmission plates 2 and the conveyor belt to achieve the purpose of pressing and flattening the food bag, which is convenient for the subsequent packaging of the food bag. After flattening the food bag, the transmission plate 2 returns to its original position, and the conveyor belt removes the food bag, so as to repeat the above process.

[0037] In another embodiment provided by the present invention, further, the flip mechanism includes a rotating shaft 3, a plurality of transmission plates 2 are arranged in parallel along the length direction of the rotating shaft 3, moving blocks 4 are arranged on opposite sides of the main body 1, and two moving blocks 4 are respectively sleeved on the two ends of the rotating shaft 3, and an inclined groove 9 is constructed on opposite sides of the main body 1, and the two moving blocks 4 are respectively slidably connected in the two inclined grooves 9. Specifically, the rotating shaft 3 is arranged along the length direction of the main body 1, and a plurality of transmission plates 2 are equidistantly fixed on the rotating shaft 3 at the connection positions of their plate bodies and the arc-shaped portions 201, and the inclined groove 9 is obliquely arranged on the main body 1, and the side of the inclined groove 9 close to the conveying position is higher, so that the micro motor can be fixed on the moving block 4, and the output end of the micro motor is fixed to the rotating shaft 3, so that the rotating shaft 3 is driven to rotate by the micro motor, and the electric telescopic rod can be embedded in the inner wall of the inclined groove 9, and the output end of the electric telescopic rod is fixed to the moving block 4, so that the moving block 4 and the rotating shaft 3 are driven to move along the inclined groove 9 by the electric telescopic rod. This is the prior art , it can be directly applied. The advantage of such a setting is that, first, multiple transmission plates 2 are connected by the rotating shaft 3, and then the rotating shaft 3 is driven to rotate and move, which can drive multiple transmission plates 2 to move synchronously, thereby making multiple transmission plates 2 reciprocate between the material receiving position, the horizontal position and the flattening position. Second, when the transmission plate 2 flips between the material receiving position and the horizontal position, the moving block 4 is always located at the higher end of the inclined slot 9. When the transmission plate 2 moves to the horizontal position and moves the food bag to the conveying position, the moving block 4 is driven by the electric telescopic rod to move along the inclined slot 9 to the other end, that is, the transmission plate 2 is driven by the moving block 4 to move obliquely downward to the flattening position. In this process, the transmission plate 2 moves downward and in the direction away from the conveying position, so that the transmission plate 2 presses the food bag, and in the process of pressing, the arc-shaped portion 201 of the transmission plate 2 will move away from the food bag, so that the food bag is moved out of the arc-shaped bearing cavity, and then in the process of resetting the transmission plate 2, the pressed and flattened food bag can be removed by the conveyor belt.

[0038] In another embodiment provided by the present invention, further, as an alternative to the driving mode of the above-mentioned micro motor, the moving block 4 and the rotating shaft 3 are consistent with the above-mentioned embodiment, and the flip mechanism includes two first gears 5 fixed at both ends of the rotating shaft 3, and the main body 1 is provided with a driving rod 6, and the driving rod 6 is provided with a first rack 7, and an elastic telescopic rod 8 is provided between the driving rod 6 and the first rack 7, and the first rack 7 is meshed with the first gear 5. Specifically, the driving rod 6 has an independent power source, and the power source is preferably a linear reciprocating The motion mechanism can drive the driving rod 6 to reciprocate along the width direction of the main body 1 (perpendicular to the direction of the rotating shaft 3). This is the prior art and can be directly applied. A plurality of elastic telescopic rods 8 are provided. The plurality of elastic telescopic rods 8 are arranged in parallel along the length direction of the first rack 7. The elastic telescopic rod 8 includes an inner rod 81 fixed to the first rack 7 and a sleeve rod 82 fixed to the driving rod 6. The sleeve rod 82 is configured with a telescopic groove. The inner rod 81 is inserted into the telescopic groove. A telescopic spring 83 is fixed to the inner wall of the telescopic groove. The other end of the telescopic spring 83 is connected to the inner rod 8. 1 is fixed, and its function is that when the driving rod 6 moves along the width direction of the main body 1, it can drive the first gear 5 to rotate. When the first gear 5 rotates, it can drive the multiple transmission plates 2 on the rotating shaft 3 to flip from the material receiving position to the horizontal position, and then drive the moving block 4 to move to drive the multiple transmission plates 2 on the rotating shaft 3 to move from the horizontal position to the flattening position. In the process of the rotating shaft 3 moving from the horizontal position to the flattening position, the rotating shaft 3 moves downward, driving the first gear 5 to squeeze the first rack 7, so that the inner rod 81 on the first rack 7 moves along the telescopic groove and squeezes the telescopic spring 83. The advantage is that the reciprocating movement of the driving rod 6 can drive the multiple transmission plates 2 on the rotating shaft 3 to move back and forth between the material receiving position and the horizontal position. When the transmission plate 2 is in the horizontal position, the moving block 4 is driven to move to make the multiple transmission plates 2 on the rotating shaft 3 move between the horizontal position and the flattening position. In the process of the moving block 4 driving the rotating shaft 3 to move, the first gear 5 and the first rack 7 always maintain meshing transmission, so that the multiple transmission plates 2 can move back and forth between the material receiving position, the horizontal position and the flattening position in sequence.

[0039] In an optional embodiment provided by the present invention, further, as an alternative to the driving mode of the above-mentioned electric telescopic rod, the moving block 4, the rotating shaft 3, and the driving rod 6 are consistent with the above-mentioned embodiment, and a first spring 10 is fixed to the inner wall of the inclined groove 9, and the other end of the first spring 10 is fixed to the corresponding moving block 4, and a connecting rod 11 is fixed to the driving rod 6. The two opposite sides of the main body 1 are constructed with connecting grooves 12. Specifically, the connecting groove 12 is connected to the inclined groove 9, and the moving block 4 and the rotating shaft 3 both extend into the connecting groove 12. The function is that when the driving rod 6 moves in a direction away from the conveying position, the driving rod 6 drives the first rack 7 to move and drives the first gear 5 to rotate. In this process, the elastic force of the first spring 10 can force the moving block 4 to be at the higher end of the inclined groove 9, that is, when the first gear 5 drives the rotating shaft 3 to rotate, the first gear 5 and the rotating shaft 3 do not move vertically. When the first gear 5 drives the multiple transmission plates 2 on the rotating shaft 3 to rotate to a horizontal position, the connecting rod 11 on the driving rod 6 enters the connecting groove 12 and presses against The first gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6. The first gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6. The first gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6. The second gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6. The first gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6. The first gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6. The first gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6. The first gear 7 and the second gear 7 are moved to the horizontal position by the driving rod 6.

[0040] Furthermore, a connecting block 13 is fixed on the side wall of the moving block 4, a trigger rod 14 is inserted on the connecting block 13, a brake block 15 is fixed on one end of the trigger rod 14, a second spring 16 is sleeved on the trigger rod 14, and the elastic force of the second spring 16 is smaller than the first spring 10, and the two ends of the second spring 16 are respectively fixed to the brake block 15 and the connecting block 13, and a trigger block 17 is provided on the connecting rod 11. Specifically, a part of the rotating shaft 3 protrudes from the moving block 4, and the protruding part of the rotating shaft 3 corresponds to the brake block 15. The brake block 15 is preferably a rubber block. The trigger rod 14, the brake block 15 and the connecting block 13 are all located on the outer side of the side wall of the moving block 4, that is, they are suspended in the connecting groove 1 2, an adapter groove 18 is vertically constructed on the connecting rod 11, and the trigger block 17 is slidably connected in the adapter groove 18. The top of the adapter groove 18 and the top of the trigger block 17 are respectively embedded with magnet blocks 19 that can attract each other. The trigger block 17 is constructed with an engaging groove that fits with the outer wall of the moving block 4 on the side away from the connecting rod 11. The function is that when the driving rod 6 drives the transmission plate 2 to move to the horizontal position, the connecting rod 11 contacts the moving block 4 through the trigger block 17, so that the moving block 4 is completely fitted into the engaging groove. At the same time, the inner wall of the engaging groove squeezes the trigger rod 14, so that the trigger rod 14 stretches the second spring 16 and drives the brake block 15 to contact the rotating shaft 3, thereby limiting the relative rotation of the moving block 4 and the rotating shaft 3, that is, the transmission plate 2 Keeping the horizontal state, when the transmission plate 2 moves from the horizontal position to the flattened position, the moving block 4 moves along the inclined groove 9. Since the moving block 4 fits with the fitting groove, the moving block 4 forces the trigger block 17 to move along the adapting groove 18 synchronously when moving. After the transmission plate 2 leaves the horizontal position, the two magnet blocks 19 between the adapting groove 18 and the trigger block 17 are separated. After the transmission plate 2 is reset to the horizontal position, the two magnet blocks 19 between the adapting groove 18 and the trigger block 17 fit. The advantage is that, first, when the trigger block 17 fits the moving block 4, the brake block 15 can be driven to contact the rotating shaft 3, and the trigger block 17 can move along the adapting groove 18 with the moving block 4. After the transmission plate 2 is reset to the horizontal position, the tension of the second spring 16 Under the action, the brake block 15 no longer interferes with the rotating shaft 3. At the same time, the two magnet blocks 19 between the trigger block 17 and the adapter groove 18 fit together to limit the trigger block 17 to the top of the adapter groove 18, so as to facilitate repeating the above process. Secondly, when the transmission plate 2 rotates to the horizontal position, the brake block 15 can limit the rotation of the rotating shaft 3, so that when the transmission plate 2 moves between the horizontal position and the flattening position, the transmission plate 2 is always in a horizontal state, that is, the transmission plate 2 can maintain the horizontal state and move diagonally downward to press the food bag to cooperate with the conveyor belt to achieve a better flattening effect, until the trigger block 17 no longer fits the moving block 4 (that is, when the transmission plate 2 is between the receiving position and the horizontal position), the rotating shaft 3 can rotate.

[0041] In another embodiment provided by the present invention, further, as an alternative to the conveying method of the above-mentioned conveyor belt, the moving block 4, the rotating shaft 3, the driving rod 6, the brake block 15, etc. are consistent with the above-mentioned embodiment, including a material receiving rack 20, a moving groove is constructed on the main body 1, and the material receiving rack 20 is slidably connected in the moving groove. A driving mechanism is provided in the main body 1, which is used to drive the material receiving rack 20 to move along the moving groove. As the number of food bags stacked on the material receiving rack 20 increases, the material receiving rack 20 gradually moves down based on the power of the driving mechanism. The distance that the receiving rack 20 descends in a single time is the same as the thickness (height) of the food bag after being flattened. Specifically, in this embodiment, the receiving rack 20 replaces the above-mentioned conveyor belt. The receiving rack 20 is similar to a box, and its top and one side close to the transmission plate 2 are open. The horizontal cross-section of the receiving rack 20 is larger than the horizontal cross-section of the food bag, so as to form a conveying position in the receiving rack 20 and store the food bag. Slide plates 21 are fixed on the opposite sides of the receiving rack 20, and the inner wall of the moving groove is configured with a slide groove 22 adapted to the slide plate 21, so as to realize the receiving rack 20 in the moving groove. The function is that, initially, the bottom wall of the receiving rack 20 is the conveying position. After the multiple transmission plates 2 move the food bags to the conveying position, the multiple transmission plates 2 press and flatten the food bags diagonally downward with the bottom wall that can cooperate with the receiving rack 20. After flattening a food bag, the lifting plate is driven down a certain distance (the descending distance is the same as the thickness of the flattened food bag) by the driving mechanism. At the same time, the receiving rack 20 will move synchronously with the lifting plate under the action of gravity, so that the flattened food bag can be moved to the bottom of the conveying position. That is, the top of the flattened food bag is the conveying position, so that the next food bag can be directly stacked on the previous food bag and flattened. The advantage is that through the coordinated use of the driving mechanism and the receiving rack 20, the food bags can be flattened and stacked on the receiving rack 20 in turn. When the food bags are stacked to the top of the receiving rack 20, the receiving rack 20 is moved out and a new receiving rack 20 is put in. In this way, the flattened food bags can be continuously stored, and after the receiving rack 20 is moved out, the food bags on it are flattened and stacked, which is convenient for the staff to perform packaging operations.

[0042] Furthermore, the main body 1 is constructed with an outlet 23 connected to the movable groove. Specifically, the outlet 23 is connected to the slide groove 22, so that when the material receiving rack 20 descends to the position of the outlet 23, the material receiving rack 20 can be directly moved out from the outlet 23, and a new material receiving rack 20 can be put in from the top of the movable groove. At the same time, the driving mechanism is reset and the above operation is repeated, thus forming a good cycle.

[0043] Furthermore, the driving mechanism includes an electric push rod and a lifting plate fixed on the top of the electric push rod. Specifically, the electric push rod is fixed in the movable groove, the lifting plate is fixed on the top of the electric push rod, and the material collecting rack 20 is placed on the lifting plate. In this way, the material collecting rack 20 can be driven to move by controlling the extension and retraction of the electric push rod. This is a prior art and can be directly applied, which is not shown in the figure.

[0044] In an embodiment provided by the present invention, further, the driving mechanism includes a second gear 24 rotatably connected to the main body 1, the driving rod 6 has an extension portion toward the material receiving rack 20, the extension portion is fixed with a second rack 25, the second gear 24 is meshed with the second rack 25, the main body 1 is rotatably connected with a third gear 26, the material receiving rack 20 is provided with a third rack 27, the third gear 26 is meshed with the third rack 27, a ratchet 28 mechanism is provided between the second gear 24 and the third gear 26, which is used to intermittently drive the third gear 26 to rotate in one direction to realize the intermittent descent of the material receiving rack 20, specifically, a movable groove is constructed on the main body 1, the connecting groove 12 and the slide groove 22 are both connected to the movable groove, the driving rod 6, The second rack 25, the second gear 24, the third gear 26 and the ratchet 28 mechanism are all located in the movable groove. The third rack 27 is fixed on the side of the slide plate 21 away from the transmission plate 2 along the height direction of the material receiving rack 20. A circular groove is constructed on the side of the third gear 26 close to the second gear 24, and a ratchet 28 is constructed on the inner wall of the circular groove. Two active ratchet pawls 29 are hinged on the second gear 24. The two active ratchet pawls 29 are rotationally symmetrical about the central axis of the second gear 24. A torsion spring is arranged between the active ratchet 29 and the second gear 24, which is used to force the active ratchet 29 to approach the ratchet 28 side. Its function is that when the driving rod 6 moves to the side away from the material receiving rack 20, it can drive the transmission plate 2 to move from the material receiving position to the flattening position. At the same time, the driving rod 6 is driven by the second gear The rack 25 drives the second gear 24 to rotate, thereby driving the active pawl 29 on the second gear 24 to rotate (the active pawl 29 rotates counterclockwise in the figure). At this time, the active pawl 29 rotates with the second gear 24 while squeezing the torsion spring around the hinge point between it and the second gear 24 to rotate, so that the active pawl 29 can enter the next tooth groove of the ratchet 28 in sequence (the ratchet 28 has a plurality of teeth, and the teeth are between the plurality of teeth. The tooth grooves), so that when the driving rod 6 drives the transmission plate 2 to move from the material receiving position to the flattening position, the second rack 25 drives the second gear 24 to rotate, while the third gear 26 does not rotate. When the driving rod 6 moves to the side close to the material receiving rack 20, it can drive the transmission plate 2 from the flattening position to the material receiving position. In this process , the second rack 25 drives the second gear 24 to rotate in the opposite direction, thereby driving the active pawl 29 to rotate in the opposite direction (the active pawl 29 rotates clockwise in the figure). At this time, the active pawl 29 can be abutted in the tooth groove and force the ratchet 28 and the third gear 26 to rotate synchronously with the second gear 24, thereby driving the third rack 27 to move downward through the third gear 26, that is, the material receiving rack 20 moves downward along the slide groove 22 as a whole, so as to achieve the effect that when the driving rod 6 drives the transmission plate 2 to move from the flattening position to the material receiving position, the second rack 25 drives the second gear 24 and the third gear 26 to rotate, and the third rack 27 and the material receiving rack 20 move downward accordingly. The advantage of such a design is that, first, the driving rod 6 can reciprocate under the action of the linear reciprocating motion mechanism,In this way, the transmission plate 2 can be driven to reciprocate between the material receiving position and the flattening position. When the transmission plate 2 moves from the material receiving position to the flattening position, the third gear 26 and the material receiving rack 20 do not move, and the transmission plate 2 can move the food bag to the material receiving rack 20 and flatten it. When the transmission plate 2 moves from the flattening position to the material receiving position, the third gear 26 rotates synchronously with the second gear 24 and drives the material receiving rack 20 to move downward, so as to achieve the effect of the material receiving rack 20 intermittently descending and stacking and storing the food bags. Secondly, after the transmission plate 2 flattens a food bag, the drive The rod 6 starts to move in the opposite direction and drives the transmission plate 2 to reset. At the same time, the driving rod 6 drives the receiving rack 20 to descend, so as to prevent the arc portion 201 of the transmission plate 2 from hitting the food bags when resetting, and to prevent the position of the food bags from changing after being stacked. Thirdly, after the food bags on the receiving rack 20 are full, the receiving rack 20 is moved out from the outlet 23, and then the next receiving rack 20 is directly placed in the chute 22. In this way, the third rack 27 on the receiving rack 20 can directly mesh with the third gear 26, and the driving mechanism can continue to operate, eliminating the above-mentioned step of resetting the driving mechanism.

[0045] An embodiment of the present invention further provides a food bag production device, which includes the transmission mechanism in any of the above embodiments.

[0046] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A transmission mechanism, comprising a main body, characterized in that: The main body is located between the material receiving position and the conveying position, and is provided with: A plurality of transmission plates are provided, and the same end of the plurality of transmission plates is configured with an arc-shaped portion, and the arc-shaped portion is used to receive the food bag at the receiving position; The turning mechanism is used to drive the plurality of transmission plates to move from the receiving position to the horizontal position and the flattening position in sequence. In the horizontal position, the food bags received by the transmission plates move to the conveying position; in the flattening position, the transmission plates flatten the food bags at the conveying position; The flipping mechanism includes a rotating shaft, and a plurality of transmission plates are arranged in parallel along the length direction of the rotating shaft. Moving blocks are arranged on opposite sides of the main body, and the two moving blocks are respectively sleeved on the two ends of the rotating shaft. Oblique grooves are constructed on opposite sides of the main body, and the two moving blocks are respectively slidably connected in the two oblique grooves.

2. A transmission mechanism according to claim 1, characterized in that: The flip mechanism includes two first gears fixed at both ends of the rotating shaft, a driving rod is arranged on the main body, a first rack is arranged on the driving rod, an elastic telescopic rod is arranged between the driving rod and the first rack, and the first rack is meshed with the first gear.

3. A transmission mechanism according to claim 2, characterized in that: A first spring is fixed on the inner wall of the inclined groove, the other end of the first spring is fixed on the corresponding moving block, a connecting rod is fixed on the driving rod, and connecting grooves are constructed on both opposite sides of the main body.

4. A transmission mechanism according to claim 3, characterized in that: A connecting block is fixed on the moving block, a trigger rod is inserted on the connecting block, a brake block is fixed on one end of the trigger rod, a second spring is sleeved on the trigger rod, two ends of the second spring are respectively fixed to the brake block and the connecting block, and a trigger block is arranged on the connecting rod.

5. A transmission mechanism according to any one of claims 2 to 4, characterized in that: It also includes a material receiving rack, a movable groove is constructed on the main body, and the material receiving rack is slidably connected in the movable groove. A driving mechanism is arranged in the main body, which is used to drive the material receiving rack to move along the movable groove. As the number of food bags stacked on the material receiving rack increases, the power of the material receiving rack based on the driving mechanism gradually decreases.

6. A transmission mechanism according to claim 5, characterized in that: The main body is provided with an outlet which is communicated with the moving groove.

7. A transmission mechanism according to claim 6, characterized in that: The driving mechanism comprises an electric push rod and a lifting plate fixed on the top end of the electric push rod.

8. A transmission mechanism according to claim 6, characterized in that: The driving mechanism includes a second gear rotatably connected to the main body, a second rack is fixed on the driving rod, the second gear is meshed with the second rack, a third gear is rotatably connected to the main body, a third rack is provided on the material collecting rack, the third gear is meshed with the third rack, and a ratchet mechanism is provided between the second gear and the third gear, which is used to intermittently drive the third gear to rotate in one direction to realize intermittent descent of the material collecting rack.

9. A food bag production device, characterized in that: It comprises the transmission mechanism described in any one of claims 1-8.

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