Discharging device of packaging machine

Abstract

The invention relates to a packaging machine discharging device which comprises a shell assembly, the shell assembly comprises a discharging bin, the bottom opening of the discharging bin is provided with a split double-layer material door, one layer of the material door is a straight section turning plate used for opening and closing the bottom opening of the discharging bin, the other layer of the material door is an arc turning plate arranged below the straight section turning plate, and the arc turning plate is used for opening and closing the bottom opening of the discharging bin. The opening device is used for opening the packaging bag when being opened. According to the discharging device, the double-layer material door and the straight section turning plate are arranged to serve as a direct valve to close the discharging bin, the arc turning plate is further arranged below the straight section turning plate, when the discharging device is opened, the arc turning plate can enter a bag opening of a packaging bag through the end, and then the bag opening of the packaging bag is completely opened along with the increase of the opening degree; the opening range is always kept larger than the discharging range, the requirement for a suction cup is lowered, the bag opening can be effectively prevented from being partially closed through the inner opening mode, scratching cannot be caused when the bag opening is opened through the arc-shaped edge, and the double-layer material door has the functions of opening the bag opening and closing the material door.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging machines, and in particular relates to a feeding device for a packaging machine. Background Art

[0002] FFS packaging machine is an integrated packaging device used for bag making (FORM), filling (FILL), and sealing (SEAL). During the filling process, filling is required through a feeding device. The feeding device generally includes a feeding bin. First, the packaging bag needs to be clamped and placed under the feeding bin, and then the bag mouth of the packaging bag is sucked open by a suction cup, and then the feeding bin is opened for feeding.

[0003] In the prior art, the feeding bin is generally opened by an opening and closing valve plate. Such valve plate is generally a straight plate with sharp corners, which is not suitable for holding the bag opening open. The bag opening is kept open only by a suction cup, and the suction of the suction cup is unstable. During the feeding process, the vibration caused by the impact of the material on the packaging bag may cause some of the suction cups to fall off, resulting in poor bag opening effect, and the material may fall from the gap. If the valve plate is set to an arc shape to obtain the ability to hold the bag opening open, the arc-shaped valve plate is difficult to tightly close the feeding bin, which is easy to cause leakage. Summary of the invention

[0004] The purpose of the present invention is to provide a packaging machine unloading device in order to solve the above-mentioned problem.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A packaging machine unloading device includes a shell assembly, wherein the shell assembly includes a unloading bin, and the bottom opening of the unloading bin is provided with a double-layer material door that opens in a split manner, wherein one layer of the material door is a straight flap, which is used to open and close the bottom opening of the unloading bin, and the other layer is an arc flap arranged below the straight flap, which is used to prop open the packaging bag when opened.

[0007] As a further optimization scheme of the present invention, the material discharge bin includes an upper shell and a lower shell, wherein the lower shell is a double-layer structure, including an outer shell and an inner shell, the inner shell is connected to the upper shell, the outer shell is sleeved on the outside of the inner shell, and a gap is left between the outer shell and the inner shell, and exhaust holes are also provided on the surface of the outer shell. In this scheme, by setting the outer shell, the bag mouth of the packaging bag is against the lower edge of the outer shell after opening. At this time, the opening width of the packaging bag is larger than the bottom opening width of the inner shell, which is conducive to material discharge. In the process of material discharge, the air that may exist in the packaging bag and the excess air in the inner shell that falls with the material enter into the gap between the outer shell and the inner shell and are discharged from the exhaust holes, which helps to improve the smoothness of material discharge.

[0008] As a further optimization scheme of the present invention, the unloading device also includes a clamping jaw assembly, which includes a frame arranged on the outer shell, a first driving member arranged on the frame, and a pair of clamping jaw bodies hinged on the frame, and the clamping jaw bodies are driven to open and close by the first driving member. In this scheme, the packaging bag is clamped and fixed by arranging a pair of clamping jaw assemblies, thereby increasing the stability of the packaging bag when loading.

[0009] As a further optimization scheme of the present invention, the first driving member is a telescopic cylinder, and a clamping claw connecting block is provided at its conveying end. The clamping claw connecting block is symmetrically hinged on both sides along the sliding direction. The two connecting rods are respectively hinged to the ends of the clamping claw body. This scheme specifically proposes a clamping claw structure, which is pushed by the telescopic cylinder and transmitted by the connecting rod, thereby driving the clamping claw body to rotate and open and close.

[0010] As a further optimization scheme of the present invention, the material door is rotatably connected to the outer shell via a material door rotating shaft arranged on its surface, wherein the two material doors are driven to open and close by the same second driving member arranged on the outer shell. In order to make the opening and closing material doors open synchronously, this scheme is driven by the same second driving member.

[0011] As a further optimization scheme of the present invention, a first driving arm is arranged on the material gate rotating shaft, a hinge seat is arranged at the rear end of the second driving member and is hinged to the outer shell, the output end is hinged to one end of one of the first driving arms, and a first adjusting arm with adjustable length is also hinged between the two first driving arms. The two material gate rotating shafts are driven to rotate by the driving arms, and the two driving arms are hinged at both ends of the first adjusting arm. When one of the driving arms is driven by the second driving member, the other driving arm drives the corresponding material gate rotating shaft to rotate synchronously towards each other.

[0012] As a further optimization scheme of the present invention, the unloading device also includes a suction cup assembly for opening the packaging bag, the suction cup assembly includes at least one pair of clamping tubes hingedly arranged on the outside of the shell assembly, the clamping tubes are hollow tubes, a vacuum joint is arranged on the surface of the clamping tubes, and a suction cup is arranged at the end away from the hinged end. The clamping tubes are arranged on both sides of the shell assembly and driven to open and close by a third driving member arranged on the shell assembly. The bag mouth of the fitted packaging bag is opened by setting the suction cup assembly. It is best to set two suction cups on each side to prevent one of the suction cups from failing. The suction cup assembly is only used to open the bag mouth, and there is no need to maintain the degree of opening of the bag mouth and the adsorption strength of the bag mouth.

[0013] As a further optimization scheme of the present invention, a bearing seat and a tube clamping drive shaft are provided on the shell assembly, a second drive arm is provided on the tube clamping drive shaft, a hinge seat is provided at the rear end of the third drive member and is hinged to the shell assembly, the output end is hinged to one of the second drive arms, and a second adjustable length arm is hinged between the two second drive arms. This scheme synchronously drives the opening and closing of the two clamping tubes through the third drive member, and is realized through the second drive arm and the second adjustment arm. The principle is the same as that of the first drive arm and the first adjustment arm.

[0014] As a further optimization scheme of the present invention, the surface of the shell is also provided with a dust removal joint connected to the interior of the shell. For materials with large dust generation, the dust discharged from the exhaust hole is easy to pollute the environment. Therefore, by setting the dust removal joint to connect with the external dust removal device, it is convenient to directly suck it away for treatment.

[0015] The beneficial effects of the present invention are:

[0016] The present invention arranges a double-layer material door, and a straight flap is used as a direct valve to close the material discharge bin, and an arc flap is further arranged below the straight flap. The arc flap has an arc-shaped cross-section, and can enter the bag opening of the packaging bag through its end when opened, and then fully open the bag opening of the packaging bag as the degree of opening increases, and always maintains the open range larger than the material discharge range, thereby reducing the demand for suction cups. The internal support method can effectively prevent the bag opening from being partially closed, and the arc-shaped edge will not cause scratches when the bag opening is opened. The double-layer material door has the functions of both opening the bag opening and closing the material door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an axial schematic diagram of the present invention;

[0018] Figure 2 It is a front view of the present invention;

[0019] Figure 3 is a side view of the present invention;

[0020] Figure 4 is a top view of the present invention;

[0021] Figure 5 The present invention Figure 4 Middle AA view;

[0022] Figure 6 The present invention Figure 4 Middle BB view;

[0023] Figure 7 It is a schematic diagram of a material door of the present invention;

[0024] In the figure: 1. Shell assembly; 11. Outer shell; 12. Upper shell; 13. Inner shell; 14. Exhaust hole; 15. Dust removal joint; 2. Clamping jaw assembly; 21. Frame; 22. First driving member; 23. Clamping jaw connecting block; 24. Connecting rod; 25. Clamping jaw body; 3. Material door assembly; 31. Second driving member; 32. First driving arm; 33. Material door shaft; 34. First adjusting arm; 35. Straight flap; 36. Arc flap; 4. Suction cup assembly; 41. Third driving member; 42. Second driving arm; 43. Tube clamping drive shaft; 44. Second adjusting arm; 45. Bearing seat; 46. Tube clamping; 47. Suction cup; 48. Vacuum joint. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Example 1

[0027] like Figure 1-7 As shown, a feeding device of a packaging machine includes a shell assembly 1, a clamping jaw assembly 2, a material door assembly 3, and a suction cup assembly 4. The shell assembly 1 includes a feeding bin, and the material door assembly 3 includes a double-layer material door arranged at the bottom opening of the feeding bin, wherein one layer of the material door is a straight flap 35, which is used to open and close the bottom opening of the feeding bin, and the ends of the two straight flaps 35 are completely fitted on the lower edge of the feeding bin when they abut against each other, and the other layer is a circular arc flap 36 arranged below the straight flap 35, which is used to open the packaging bag when opening.

[0028] In this solution, a straight flap 35 is provided as a direct valve, and an arc flap 36 is further provided below the straight flap 35. The arc flap 36 has an arc-shaped cross-section. When opened, the arc flap 36 can enter the bag opening of the packaging bag through its end, and then fully open the bag opening of the packaging bag as the degree of opening increases, and always keep the open range larger than the feeding range, thereby reducing the demand for suction cups. The internal support method can effectively prevent the bag opening from being partially closed, and is more stable. The arc-shaped edge will not cause scratches when the bag opening is opened.

[0029] The material discharge bin includes an upper shell 12 and a lower shell, wherein the lower shell is a double-layer structure, including an outer shell 11 and an inner shell 13, the inner shell 13 is connected to the upper shell 12, the outer shell 11 is sleeved on the outside of the inner shell 13, and a gap is left between the outer shell 11 and the inner shell 13, and an exhaust hole 14 is also provided on the surface of the outer shell 11. In this scheme, by setting the outer shell 11, the bag mouth of the packaging bag is against the lower edge of the outer shell 11 after opening. At this time, the opening width of the packaging bag is larger than the bottom opening width of the inner shell 13, which is conducive to material discharge. In the process of material discharge, the air that may exist in the packaging bag and the excess air in the inner shell 13 that falls with the material enter the gap between the outer shell 11 and the inner shell 13, and are discharged from the exhaust hole 14, which is conducive to improving the smoothness of material discharge.

[0030] The clamping jaw assembly 2 includes a frame 21 arranged on the housing 11, a first driving member 22 arranged on the frame 21, and a pair of clamping jaw bodies 25 hinged on the frame 21. The clamping jaw bodies 25 are driven to open and close by the first driving member 22. In this solution, a pair of clamping jaw assemblies 2 are provided to clamp and fix the packaging bag, thereby increasing the stability of the packaging bag when filling.

[0031] Specifically, the first driving member 22 is a telescopic cylinder, and a clamping claw connecting block 23 is provided at its conveying end. The clamping claw connecting block 23 is symmetrically hinged on both sides along the sliding direction. The two connecting rods 24 are respectively hinged to the ends of the clamping claw body 25. The clamping claw body 25 is driven to rotate and open and close by the telescopic cylinder and the connecting rod 24. Figure 3 As shown, the middle part of the clamp body 25 is hinged to the frame 21, one end is provided with a clamp pad, and the other end is hinged to the connecting rod 24. When the clamp connection block 23 moves up, the connecting rod 24 drives the clamp body 25 to rotate and open, and vice versa.

[0032] The material doors are rotatably connected to the outer shell 11 via a material door rotating shaft 33 arranged on the surface thereof, wherein the two material doors are driven to open and close via the same second driving member 31 arranged on the outer shell 11. In order to enable the opening and closing material doors to open synchronously, this scheme is driven by the same second driving member 31.

[0033] Specifically, a first driving arm 32 is provided on the material gate shaft 33, a hinge seat is provided at the rear end of the second driving member 31 and is hinged to the outer shell 11, the output end is hinged to one end of one of the first driving arms 32, and a first adjusting arm 34 with adjustable length is hingedly provided between the two first driving arms 32. The two material gate shafts 33 are driven to rotate by a first driving arm 32 respectively, and the two first driving arms 32 are hinged at both ends of the first adjusting arm 44. When one of the first driving arms 32 is driven by the second driving member 31, the other first driving arm 32 drives the corresponding material gate shaft 33 to rotate synchronously towards each other. The first adjusting arm 44 also has a length adjustment function, which is divided into two sections, one of which is telescopically arranged with the other section, and is fixed after adjustment by means of threads and nuts.

[0034] The suction cup assembly 4 is used to open the packaging bag. The suction cup assembly 4 includes at least one pair of clamping tubes 46 hingedly arranged on the outside of the shell assembly 1. The clamping tube 46 is a hollow tube with a vacuum joint 48 on its surface and a suction cup 47 at the end away from the hinged end. The clamping tube 46 is arranged on both sides of the shell assembly 1 and is driven to open and close by a third driving member 41 arranged on the shell assembly 1. The suction cup assembly 4 is arranged to open the bag mouth of the fitted packaging bag. It is best to set two suction cups 47 on each side to prevent one of the suction cups 47 from failing. The suction cup assembly 4 is only used to open the middle of the bag mouth for the arc flap 36 to enter, and it is not necessary to maintain the opening degree of the bag mouth and the adsorption strength of the bag mouth.

[0035] A bearing seat 45 and a tube clamping drive shaft 43 are provided on the shell assembly 1, and a second drive arm 42 is provided on the tube clamping drive shaft 43. A hinge seat is provided at the rear end of the third drive member 41 and is hinged to the shell assembly 1, and the output end is hinged to one of the second drive arms 42. A second adjustment arm 44 with adjustable length is also hinged between the two second drive arms 42. This scheme uses the third drive member 41 to synchronously drive the opening and closing of the two clamping tubes 46, which is realized by the second drive arm 42 and the second adjustment arm 44. The principle is the same as that of the first drive arm 32 and the first adjustment arm 34.

[0036] The surface of the shell 11 is also provided with a dust removal joint 15 connected to the inside of the shell 11. For materials with large dust, the dust discharged from the exhaust hole 14 is easy to pollute the environment. Therefore, the dust removal joint 15 is connected to an external dust removal device to facilitate direct suction and treatment.

[0037] The specific implementation method is as follows: when the packaging bag is sent to the bottom of the clamping jaw assembly 2, the clamping jaw assembly 2 is operated so that the two pairs of clamping jaw bodies 25 clamp the upper sides of the packaging bag respectively, and then the third driving member 41 drives the two clamping tubes 46 to rotate inward so that the suction cup 47 contacts the outside of the bag opening of the packaging bag, and the negative pressure is generated by the external device to suck the middle of the bag opening, and then the two clamping tubes 46 are driven to open to both sides so that the middle of the bag opening of the packaging bag is opened, and then the first driving member 31 is started, driving the material door to rotate downward and open, and the bag opening of the packaging bag is further expanded by the arc flap 36. After the unloading is completed, the first driving member 31 drives the material door to close, and the fully filled packaging bag is clamped by other devices of the production line, and the clamping jaw assembly 2 releases the packaging bag.

[0038] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A packaging machine unloading device, comprising a housing assembly (1), wherein the housing assembly (1) comprises a unloading bin, characterized in that: The bottom opening of the lower material bin is provided with a double-layer material door, wherein one layer of the material door is a straight flap (35) for opening and closing the bottom opening of the lower material bin, and the other layer is a circular arc flap (36) arranged below the straight flap (35) for holding open the packaging bag when opening.

2. A packaging machine unloading device according to claim 1, characterized in that: The lower material bin comprises an upper shell (12) and a lower shell, wherein the lower shell is a double-layer structure, comprising an outer shell (11) and an inner shell (13), the inner shell (13) being connected to the upper shell (12), the outer shell (11) being sleeved on the outside of the inner shell (13), and a gap being left between the outer shell (11) and the inner shell (13), and an exhaust hole (14) is also provided on the surface of the outer shell (11).

3. A packaging machine unloading device according to claim 2, characterized in that: The unloading device also includes a clamping jaw assembly (2), which includes a frame (21) arranged on the housing (11), a first driving member (22) arranged on the frame (21), and a pair of clamping jaw bodies (25) hinged on the frame (21), and the clamping jaw bodies (25) are driven to open and close by the first driving member (22).

4. A packaging machine unloading device according to claim 3, characterized in that: The first driving member (22) is a telescopic cylinder, and a clamping claw connecting block (23) is provided at its conveying end. The clamping claw connecting block (23) is symmetrically hinged with two connecting rods (24) on both sides along the sliding direction. The two connecting rods (24) are respectively hinged with the ends of the clamping claw body (25).

5. A packaging machine unloading device according to claim 2, characterized in that: The material doors are rotatably connected to the housing (11) via a material door rotating shaft (33) arranged on the surface of the material doors, wherein the two material doors are driven to open and close via the same second driving member (31) arranged on the housing (11).

6. A packaging machine unloading device according to claim 5, characterized in that: The material door shaft (33) is provided with a first driving arm (32), the tail end of the second driving member (31) is provided with a hinge seat hinged to the housing (11), the output end is hinged to one end of one of the first driving arms (32), and a first adjusting arm (34) with adjustable length is hinged between the two first driving arms (32).

7. A packaging machine unloading device according to claim 1, characterized in that: The unloading device also includes a suction cup assembly (4) for opening the packaging bag, the suction cup assembly (4) includes at least one pair of clamping tubes (46) hingedly arranged outside the shell assembly (1), the clamping tube (46) is a hollow tube, a vacuum joint (48) is provided on the surface of the clamping tube, and a suction cup (47) is provided at the end away from the hinged end. The clamping tube (46) is arranged on both sides of the shell assembly (1) and is driven to open and close by a third driving member (41) arranged on the shell assembly (1).

8. A packaging machine unloading device according to claim 7, characterized in that: The housing assembly (1) is provided with a bearing seat (45) and a tube clamping drive shaft (43), the tube clamping drive shaft (43) is provided with a second drive arm (42), a hinge seat is provided at the rear end of the third drive member (41) and is hinged to the housing assembly (1), an output end is hinged to one of the second drive arms (42), and a second adjustment arm (44) with adjustable length is also hinged between the two second drive arms (42).

9. A packaging machine unloading device according to claim 2, characterized in that: The surface of the outer shell (11) is also provided with a dust removal joint (15) which is connected to the interior of the outer shell (11).

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