Bag clamping and conveying device for powder packaging bags
By designing a bag clamping conveying device for powder packaging bags, the bag mouth of the packaging bag is clamped and limited by using eccentric and rotary transmission technology, the problem of possible deviation and inclination of the bag mouth during the conveying process is solved, and the bag mouth is accurately vertical when the edge folding machine enters, and the accuracy of the edge folding action is improved.
Patent Information
- Application Number
- CN202411961881.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-11
AI Technical Summary
During the transportation process, the bag mouth may be offset and tilted, causing the edge folding machine to be unable to fold the edge accurately.
A bag clamping conveying device for powder packaging bags is designed. The first slanting seat and the second slanting seat installed on the mounting machine base are combined with a rotating transmission mechanism and a slanting power device to achieve clamping and limiting the bag mouth of the packaging bag, ensuring that the bag mouth is in a vertical state when the edge folding machine enters.
Through the use of the bag clamp conveying device, the bag opening of the powder packaging bag is always in a vertical state during the transportation process, which improves the accuracy and stability of the folding action.
Smart Images
Figure CN119590704A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of powder packaging, in particular to a bag clamping and conveying device for a powder packaging bag. Background Art
[0002] In powder packaging technology, after the powder is filled into bags by the packaging machine, it needs to be transported to the heat laminating machine through a conveyor belt for heat laminating. Heat laminating mainly seals the upper opening of the packaging bag. After heat laminating, the upper sealing edge of the packaging bag needs to be folded on the folding machine. Since the sealed packaging bag may be offset and tilted during the transportation process, if the bag opening is tilted when the folding machine folds the edge, it cannot be guaranteed that each folding is accurate. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a bag clamping and conveying device for powder packaging bags, which can complete the bag clamping and limiting of the upper bag mouth of the packaging bag during the packaging bag conveying process, thereby ensuring that the bag mouth of the packaging bag is in a vertical state when entering the bag mouth folding machine, thereby ensuring the accuracy of the folding action.
[0004] To solve the above technical problems, the technical solution of the present invention is: a bag clamping and conveying device for powder packaging bags, comprising a frame, a mounting base is provided on the frame, a clamping and conveying mechanism for clamping the bag mouth of the packaging bag is installed on the mounting base, a conveying roller line for supporting and transporting the packaging bag is provided on the frame downstream of the clamping and conveying mechanism, the clamping and conveying mechanism comprises a first sway seat and a second sway seat swayingly installed on the mounting base, the first sway seat and the second sway seat are respectively installed with a first conveying frame and a second conveying frame, the first conveying frame and the second conveying frame are respectively rotatably installed with a first conveying belt wheel group and a second conveying belt wheel group, the first conveying belt wheel group and the second conveying belt wheel group are respectively provided with a first conveyor belt and a second conveyor belt, the first driving wheel of the first conveying belt wheel group and the second driving wheel of the second conveying belt wheel group are respectively connected to the rotating power device through a rotating transmission mechanism, and the first sway seat and the second sway seat are driven by a swaying power device.
[0005] As a preferred scheme, the first deflection seat and the second deflection seat have the same structure, the first deflection seat includes two deflection rods and a first horizontal connecting beam, the upper end of the deflection rod is hinged on the mounting seat, the two ends of the first horizontal connecting beam are connected to the lower ends of the two deflection rods, the first conveying frame and the second conveying frame have the same structure, the first conveying frame includes a conveying beam fixed on the first horizontal connecting beam, the first conveying belt wheel group includes the first driving wheel and the first driven wheel, and a plurality of intermediate conveying wheels between the first driving wheel and the driven wheel, the intermediate conveying wheels are rotatably mounted on the conveying beam, the first driving wheel and the first driven wheel are rotatably mounted on the first driving wheel frame and the first driven wheel frame respectively, the first driving wheel frame and the second driving wheel frame are fixed on the first horizontal connecting beam and are located at the two ends of the conveying beam, and the first conveyor belt is installed between the first driving wheel and the first driven wheel.
[0006] As a preferred solution, the rotary power device is a rotary motor, which is fixed on the mounting base. The rotary transmission mechanism includes a driving gear and a driven gear that are rotatably mounted on the mounting base and are mutually engaged. The driving gear is fixed to the output shaft of the rotary motor, and the gear shaft of the driving gear is connected to the axle of the first driving wheel via a universal joint transmission shaft, and the gear shaft of the driven gear is connected to the axle of the second driving wheel via a universal joint transmission shaft.
[0007] As a preferred solution, the yaw force device includes a yaw cylinder, which is hinged between the yaw rod of the first yaw seat and the yaw rod of the second yaw seat, and a synchronous connecting rod mechanism is arranged between the first yaw seat and the second yaw seat.
[0008] As a preferred scheme, the synchronous connection mechanism includes a first crank arm, a second crank arm and a synchronous connecting rod, the first crank arm is arranged on the swing rod of the first swing seat, the second crank arm is arranged on the swing rod of the second swing seat, the synchronous connecting rod is hinged between the first crank arm and the second crank arm, the hinge point between the synchronous connecting rod and the first crank arm is the first hinge point, the hinge point between the synchronous connecting rod and the second crank arm is the second hinge point, the first hinge point is located above the swing center of the first swing seat, the second hinge point is located below the swing center of the second swing seat, the line connecting the swing center of the first swing seat and the first hinge point, and the line connecting the swing center of the second swing seat and the second hinge point are parallel to each other.
[0009] As a preferred solution, a restraining structure for restraining the bag opening of the packaging bag is also installed on the first and second deflection seats.
[0010] As a preferred solution, the constraint structure includes a first constraint plate fixed on the first horizontal connecting beam and a second constraint plate fixed on the second horizontal connecting beam of the second swing seat, and the first constraint plate and the second constraint plate cooperate with each other to constrain the bag opening of the packaging bag.
[0011] As a preferred solution, the first constraint plate and the second constraint plate are installed in the same manner, a connecting plate is provided on the side of the first constraint plate, a strip hole is provided on the connecting plate, connecting bolts are constrained in the strip hole, and the connecting plate is fixed to the first horizontal connecting beam through the connecting bolts.
[0012] After adopting the above technical scheme, the effect of the present invention is as follows: since the bag clamping and conveying device of the powder packaging bag comprises a frame, the frame is provided with a mounting base, the mounting base is provided with a clamping and conveying mechanism for clamping the bag mouth of the packaging bag, the frame is provided with a conveying roller line for supporting and transporting the packaging bag at the downstream of the clamping and conveying mechanism, the clamping and conveying mechanism comprises a first sway seat and a second sway seat swayingly mounted on the mounting base, the first sway seat and the second sway seat are respectively installed with a first conveying frame and a second conveying frame, the first conveying frame and the second conveying frame are respectively rotatably installed with a first conveying belt wheel group and a second conveying belt wheel group, the first conveying belt wheel group and the second conveying belt wheel group are respectively provided with a first conveying belt and a second conveying belt, the first conveying belt wheel group and the second conveying belt wheel group are respectively provided with a first conveying belt and a second conveying belt, the first driving wheel of the first conveying belt wheel group and the second driving wheel of the second conveying belt wheel group The two driving wheels are respectively connected to the rotary power device through a rotary transmission mechanism, and the first deflection seat and the second deflection seat are driven by a deflection power device; first, the first deflection seat and the second deflection seat are driven to deflect by the deflection power device to facilitate the entry of the powder packaging bag, and then the rotary power device cooperates with the rotary transmission mechanism to drive the first driving wheel and the second driving wheel, so that the first conveyor belt and the second conveyor belt start to transmit, and then the first deflection seat and the second deflection seat are reset to reset the deflection, so that the upper bag mouth of the powder packaging bag can be clamped and conveyed at the same time, and the surface of the first conveyor belt and the second conveyor belt can make the upper bag mouth flat; the bag clamping and conveying device can complete the bag clamping and limiting of the upper bag mouth of the packaging bag during the transportation of the packaging bag, thereby ensuring that the bag mouth of the packaging bag is in a vertical state when entering the bag mouth folding machine, thereby ensuring the accuracy of the folding action.
[0013] Since the first deflection seat and the second deflection seat have the same structure, the first deflection seat includes two deflection rods and a first horizontal connecting beam, the upper end of the deflection rod is hinged on the mounting seat, the two ends of the first horizontal connecting beam are connected to the lower ends of the two deflection rods, the first conveying frame and the second conveying frame have the same structure, the first conveying frame includes a conveying beam fixed on the first horizontal connecting beam, the first conveying belt wheel group includes the first driving wheel and the first driven wheel, and a plurality of intermediate conveying wheels between the first driving wheel and the driven wheel, the intermediate conveying wheels are rotatably installed on the conveying beam, the first driving wheel and the first driven wheel are rotatably installed on the first driving wheel frame and the first driven wheel frame respectively, the first driving wheel frame and the second driving wheel frame are fixed on the first horizontal connecting beam and are located at the two ends of the conveying beam, and the first conveyor belt is installed between the first driving wheel and the first driven wheel; ensure that the first conveying belt wheel group also deflects synchronously when the first deflection seat deflects, so as to ensure the stable and accurate clamping and conveying of the powder packaging bag.
[0014] Furthermore, since the rotary power device is a rotary motor, the rotary motor is fixed on the mounting base, and the rotary transmission mechanism includes a driving gear and a driven gear that are rotatably mounted on the mounting base and are mutually engaged, the driving gear is fixed to the output shaft of the rotary motor, the gear shaft of the driving gear is connected to the axle of the first driving wheel through a universal joint transmission shaft, and the gear shaft of the driven gear is connected to the axle of the second driving wheel through a universal joint transmission shaft; first, the rotary motor drives the driving gear to rotate and drives the driven gear to rotate, so that the first driving wheel and the second driving wheel can be effectively transmitted, and then the universal joint transmission shaft can make the first driving wheel and the second driving wheel effectively transmitted even when they are deflected, thereby improving the use effect.
[0015] Furthermore, since the yaw force device includes a yaw cylinder, the yaw cylinder is hinged between the yaw rod of the first yaw seat and the yaw rod of the second yaw seat, and a synchronous connecting rod mechanism is arranged between the first yaw seat and the second yaw seat; the yaw cylinder is extended and retracted so that the first yaw seat and the second yaw seat can yaw synchronously, thereby ensuring the stability of clamping and conveying the powder packaging bag.
[0016] Since the synchronous connection mechanism includes a first crank arm, a second crank arm and a synchronous connecting rod, the first crank arm is arranged on the swing rod of the first swing seat, the second crank arm is arranged on the swing rod of the second swing seat, the synchronous connecting rod is hinged between the first crank arm and the second crank arm, the hinge point between the synchronous connecting rod and the first crank arm is the first hinge point, and the hinge point between the synchronous connecting rod and the second crank arm is the second hinge point. The first hinge point is located above the swing center of the first swing seat, and the second hinge point is located below the swing center of the second swing seat. The line connecting the swing center of the first swing seat and the first hinge point, and the line connecting the swing center of the second swing seat and the second hinge point are parallel to each other; therefore, when the first swing seat swings outward, the first crank arm will swing inward, and the second crank arm will be driven to swing outward through the synchronous connecting rod, forming a linkage to ensure swing synchronization.
[0017] Furthermore, since the first deflection seat and the second deflection seat are also equipped with a restraining structure for restraining the bag opening of the packaging bag, the effect of clamping and conveying the bag opening of the powder packaging bag is further improved.
[0018] Furthermore, since the constraint structure includes a first constraint plate fixed on the first horizontal connecting beam and a second constraint plate fixed on the second horizontal connecting beam of the second deflection seat, the first constraint plate and the second constraint plate cooperate with each other to constrain the bag opening of the packaging bag, thereby increasing the contact area with the powder packaging bag and improving the flatness of the bag opening when clamping.
[0019] Since the first constraint plate and the second constraint plate are installed in the same way, a connecting plate is provided on the side of the first constraint plate, and a strip hole is provided on the connecting plate. Connecting bolts are constrained in the strip hole, and the connecting plate is fixed to the first horizontal connecting beam through the connecting bolts; the installation position of the first constraint plate and the second constraint plate can be adjusted along the extension direction of the strip hole through the strip hole, thereby changing the distance between the first constraint plate and the second constraint plate to adapt to different packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0021] Figure 1 is a stereogram of an embodiment of the present invention;
[0022] Figure 2 is a schematic structural diagram of an embodiment of the present invention;
[0023] Figure 3 is a schematic diagram of the structure of embodiment A of the present invention;
[0024] Figure 4 is a schematic structural diagram of a first conveyor frame and a second conveyor frame according to an embodiment of the present invention;
[0025] In the accompanying drawings: 1. frame; 2. mounting base; 3. first sway seat; 4. second sway seat; 5. first conveyor belt; 6. second conveyor belt; 7. first driving wheel; 8. second driving wheel; 9. sway rod; 10. first horizontal connecting beam; 11. conveying beam; 12. first driven wheel; 13. intermediate conveying wheel; 14. first driving wheel frame; 15. first driven wheel frame; 16. second horizontal connecting beam; 17. second driven wheel; 18. second driving wheel frame; 19. second driven wheel frame; 20. rotating motor; 21. driving gear; 22. driven gear; 23. sway cylinder; 24. first crank arm; 25. second crank arm; 26. synchronous connecting rod; 27. first hinge point; 28. second hinge point; 29. first restraining plate; 30. second restraining plate; 31. connecting plate; 32. strip hole; 33. connecting bolt. DETAILED DESCRIPTION
[0026] The present invention is further described in detail below through specific examples.
[0027] like Figures 1 to 4 As shown, a bag clamping and conveying device for powder packaging bags comprises a frame 1, on which a mounting base 2 is provided, on which a clamping and conveying mechanism for clamping the bag mouth of the packaging bag is installed, and on which a conveying roller line for supporting and transporting the packaging bag is provided downstream of the clamping and conveying mechanism on the frame 1, and the clamping and conveying mechanism comprises a first sway seat 3 and a second sway seat 4 swayingly installed on the mounting base 2, the first sway seat 3 and the second sway seat 4 are respectively installed with a first conveying frame and a second conveying frame, on which a first conveying belt 5 wheel group and a second conveying belt 6 wheel group are respectively rotatably installed, on which the first conveying belt 5 wheel group and the second conveying belt 6 wheel group are respectively provided with a first conveying belt 5 and a second conveying belt 6, a first driving wheel 7 of the first conveying belt 5 wheel group and a second driving wheel 8 of the second conveying belt 6 wheel group are respectively connected to a rotating power device through a rotating transmission mechanism, and the first sway seat 3 and the second sway seat 4 are driven by a swaying power device.
[0028] like Figure 2As shown, the first deflection seat 3 and the second deflection seat 4 have the same structure, the first deflection seat 3 includes two deflection rods 9 and a first horizontal connecting beam 10, the upper end of the deflection rod 9 is hinged on the mounting seat, and the two ends of the first horizontal connecting beam 10 are connected to the lower ends of the two deflection rods 9, the first conveying frame and the second conveying frame have the same structure, the first conveying frame includes a conveying beam 11 fixed on the first horizontal connecting beam 10, the first conveying belt 5 wheel group includes the first driving wheel 7 and the first driven wheel 12, and a plurality of intermediate conveying wheels 13 between the first driving wheel 7 and the driven wheel, the intermediate conveying wheel 13 is rotatably mounted on the conveying beam 11, the first driving wheel 7 and the first driven wheel 12 are rotatably mounted on the first driving wheel frame 14 and the first driven wheel frame 15 respectively, the first driving wheel frame 14 and the second driving wheel frame 18 are fixed on the first horizontal connecting beam 10 and are located at the two ends of the conveying beam 11, and the first conveying belt 5 is installed between the first driving wheel 7 and the first driven wheel 12;
[0029] The second deflection seat 4 is also provided with two deflection rods 9 and a second horizontal connecting beam 16. The second conveyor frame is provided with a conveying beam 11 installed on the second horizontal connecting beam 16. The second conveyor belt 6 wheel group includes a second driving wheel 8 and a second driven wheel 17. A plurality of intermediate conveying wheels 13 installed on the conveying beam 11 are also provided between the second driving wheel 8 and the second driven wheel 17. Similarly, the second driving wheel 8 and the second driven wheel 17 are respectively installed on the second driving wheel frame 18 and the second driven wheel frame 19, and the second driving wheel frame 18 and the second driven wheel frame 19 are also respectively located at both ends of the conveying beam 11, and the second conveyor belt 6 is located between the second driving wheel 8 and the second driven wheel 17; ensure that the first conveyor belt 5 wheel group also deflects synchronously when the first deflection seat 3 deflects, and the second deflection seat 4 and the second conveyor belt 6 wheel group are also the same, to ensure the stable and accurate clamping and conveying of the powder packaging bag.
[0030] In this embodiment, the rotary power device is a rotary motor 20, which is fixed on the mounting base 2. The rotary transmission mechanism includes a driving gear 21 and a driven gear 22 that are rotatably mounted on the mounting base 2 and are mutually engaged. The driving gear 21 is fixed to the output shaft of the rotary motor 20. The gear shaft of the driving gear 21 is connected to the axle of the first driving wheel 7 through a universal joint transmission shaft, and the gear shaft of the driven gear 22 is also connected to the axle of the second driving wheel 8 through a universal joint transmission shaft. First, the rotary motor 20 drives the driving gear 21 to rotate and drives the driven gear 22 to rotate, so that the first driving wheel 7 and the second driving wheel 8 can be effectively transmitted. Then, the universal joint transmission shaft can effectively transmit the first driving wheel 7 and the second driving wheel 8 when they are deflected, thereby improving the use effect. The universal joint transmission shaft is an existing structure on the market, which is not shown in the drawings and is not described in detail in the text.
[0031] Furthermore, the yaw force device includes a yaw cylinder 23, which is hinged between the yaw rod 9 of the first yaw seat 3 and the yaw rod 9 of the second yaw seat 4, and a synchronous connecting rod 26 mechanism is arranged between the first yaw seat 3 and the second yaw seat 4; the yaw cylinder 23 is telescoped so that the first yaw seat 3 and the second yaw seat 4 can yaw synchronously, thereby ensuring the stability of the clamping and conveying of the powder packaging bag.
[0032] like Figure 3 As shown, the synchronous connection mechanism includes a first crank arm 24, a second crank arm 25 and a synchronous connecting rod 26, wherein the first crank arm 24 is arranged on the deflection rod 9 of the first deflection seat 3, and the second crank arm 25 is arranged on the deflection rod 9 of the second deflection seat 4. The synchronous connecting rod 26 is hinged between the first crank arm 24 and the second crank arm 25, and the hinge point between the synchronous connecting rod 26 and the first crank arm 24 is a first hinge point 27, and the hinge point between the synchronous connecting rod 26 and the second crank arm 25 is a second hinge point 28. The first hinge point 27 is located above the swing center of the first swing seat 3, and the second hinge point 28 is located below the swing center of the second swing seat 4. The line connecting the swing center of the first swing seat 3 and the first hinge point 27, and the line connecting the swing center of the second swing seat 4 and the second hinge point 28 are parallel to each other; therefore, when the first swing seat 3 swings outward, the first curved arm 24 will swing inward, and drive the second curved arm 25 to swing outward through the synchronous connecting rod 26, forming a linkage to ensure swing synchronization.
[0033] like Figure 2 As shown, the first deflection seat 3 and the second deflection seat 4 are also equipped with a restraining structure for restraining the bag opening of the packaging bag, thereby further improving the effect of clamping and conveying the bag opening of the powder packaging bag.
[0034] Furthermore, the constraint structure includes a first constraint plate 29 fixed on the first horizontal connecting beam 10 and a second constraint plate 30 fixed on the second horizontal connecting beam 16 of the second swing seat 4. The first constraint plate 29 and the second constraint plate 30 cooperate with each other to constrain the bag opening of the packaging bag, increase the contact area with the powder packaging bag, and improve the flatness of the bag opening when clamping.
[0035] The first constraint plate 29 and the second constraint plate 30 are installed in the same manner. A connecting plate 31 is provided on the side of the first constraint plate 29. A strip hole 32 is provided on the connecting plate 31. A connecting bolt 33 is constrained in the strip hole 32. The connecting plate 31 is fixed to the first horizontal connecting beam 10 through the connecting bolt 33. A connecting plate 31 is also provided on the side of the second constraint plate 30, which is installed on the second horizontal connecting beam 16 through the strip hole 32. The installation position of the first constraint plate 29 and the second constraint plate 30 can be adjusted along the extension direction of the strip hole 32 through the strip hole 32, thereby changing the distance between the first constraint plate 29 and the second constraint plate 30 to adapt to different packaging bags.
[0036] The working principle of this embodiment is as follows: first, the first pendulum seat 3 and the second pendulum seat 4 are driven to swing outward relative to each other through the pendulum cylinder 23, and then the rotating motor 20 drives the driving gear 21 to rotate and drive the driven gear 22 to rotate, and then the first driving wheel 7 and the second driving wheel 8 are driven through the universal joint transmission shaft, so that the first conveyor belt 5 and the second conveyor belt 6 are driven for transportation. When the powder packaging bag is conveyed over, the first pendulum seat 3 and the second pendulum seat 4 are driven to swing inward relative to each other, and the first constraint plate 29 and the second constraint plate 30 cooperate to constrain the bag opening of the packaging bag and convey it toward the downstream conveying roller line.
[0037] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the scope of protection defined by the claims of the present invention.
Claims
1. A bag clamping and conveying device for powder packaging bags, comprising a frame, characterized in that: The frame is provided with a mounting base, and a clamping and conveying mechanism for clamping the bag mouth of the packaging bag is installed on the mounting base. A conveying roller line for supporting and transporting the packaging bag is provided on the frame downstream of the clamping and conveying mechanism. The clamping and conveying mechanism includes a first sway seat and a second sway seat swayingly mounted on the mounting base, and the first sway seat and the second sway seat are respectively mounted with a first conveying frame and a second conveying frame, and the first conveying frame and the second conveying frame are respectively rotatably mounted with a first conveying belt wheel group and a second conveying belt wheel group, and the first conveying belt wheel group and the second conveying belt wheel group are respectively provided with a first conveyor belt and a second conveyor belt, and the first driving wheel of the first conveyor belt wheel group and the second driving wheel of the second conveyor belt wheel group are respectively connected to the rotating power device through a rotating transmission mechanism, and the first sway seat and the second sway seat are driven by the swaying power device.
2. The bag clamping and conveying device for powder packaging bags according to claim 1, characterized in that: The first deflection seat and the second deflection seat have the same structure, the first deflection seat includes two deflection rods and a first horizontal connecting beam, the upper end of the deflection rod is hinged on the mounting seat, the two ends of the first horizontal connecting beam are connected to the lower ends of the two deflection rods, the first conveying frame and the second conveying frame have the same structure, the first conveying frame includes a conveying beam fixed on the first horizontal connecting beam, the first conveying belt wheel group includes the first driving wheel and the first driven wheel, and a plurality of intermediate conveying wheels between the first driving wheel and the driven wheel, the intermediate conveying wheels are rotatably installed on the conveying beam, the first driving wheel and the first driven wheel are rotatably installed on the first driving wheel frame and the first driven wheel frame respectively, the first driving wheel frame and the second driving wheel frame are fixed on the first horizontal connecting beam and are located at the two ends of the conveying beam, and the first conveyor belt is installed between the first driving wheel and the first driven wheel.
3. The bag clamping and conveying device for powder packaging bags according to claim 2, characterized in that: The rotary power device is a rotary motor, which is fixed on the mounting base. The rotary transmission mechanism includes a driving gear and a driven gear which are rotatably mounted on the mounting base and are mutually engaged. The driving gear is fixed to the output shaft of the rotary motor. The gear shaft of the driving gear is connected to the axle of the first driving wheel through a universal joint transmission shaft, and the gear shaft of the driven gear is connected to the axle of the second driving wheel through a universal joint transmission shaft.
4. The bag clamping and conveying device for powder packaging bags according to claim 3, characterized in that: The yaw force device comprises a yaw cylinder, which is hinged between the yaw rod of the first yaw seat and the yaw rod of the second yaw seat, and a synchronous connecting rod mechanism is provided between the first yaw seat and the second yaw seat.
5. The bag clamping and conveying device for powder packaging bags according to claim 4, characterized in that: The synchronous connection mechanism includes a first crank arm, a second crank arm and a synchronous connecting rod. The first crank arm is arranged on the swing rod of the first swing seat, and the second crank arm is arranged on the swing rod of the second swing seat. The synchronous connecting rod is hinged between the first crank arm and the second crank arm. The hinge point between the synchronous connecting rod and the first crank arm is the first hinge point, and the hinge point between the synchronous connecting rod and the second crank arm is the second hinge point. The first hinge point is located above the swing center of the first swing seat, and the second hinge point is located below the swing center of the second swing seat. The line connecting the swing center of the first swing seat and the first hinge point, and the line connecting the swing center of the second swing seat and the second hinge point are parallel to each other.
6. The bag clamping and conveying device for powder packaging bags according to claim 5, characterized in that: The first deflection seat and the second deflection seat are also equipped with a restraining structure for restraining the bag opening of the packaging bag.
7. The bag clamping and conveying device for powder packaging bags according to claim 6, characterized in that: The restraint structure includes a first restraint plate fixed on a first horizontal connecting beam and a second restraint plate fixed on a second horizontal connecting beam of a second deflection seat, and the first restraint plate and the second restraint plate cooperate with each other to restrain the bag opening of the packaging bag.
8. The bag clamping and conveying device for powder packaging bags according to claim 7, characterized in that: The first constraint plate and the second constraint plate are installed in the same manner. A connecting plate is provided on the side of the first constraint plate. The connecting plate is provided with strip holes. Connecting bolts are constrained in the strip holes. The connecting plate is fixed to the first horizontal connecting beam through the connecting bolts.