A bag clamping mechanism for a fertilizer quantitative packaging scale

Abstract

The utility model discloses a bag clamping mechanism for a fertilizer quantitative packaging scale, belonging to the technical field of electronic weighing and metering. The bag clamping mechanism for the fertilizer quantitative packaging scale comprises a quantitative packaging scale, a conveyor belt installed below a material outlet of the quantitative packaging scale, and a sewing machine installed at the end of the conveyor belt. A bag clamping mechanism is installed between the quantitative packaging scale and the sewing machine. The bag clamping mechanism can be extended through the movable ends of two double-acting cylinders. During the rotation of a first connecting shaft rod and a second connecting shaft rod respectively coordinated by the two ends of the double-acting cylinder, a clamping arm is lifted to clamp the bag mouth of the packaging bag, and a guide wheel is fitted with the bag mouth to guide the packaging bag during the conveying process to avoid wrinkles at the bag mouth during the conveying process until the bag mouth of the packaging bag enters the sewing position of the sewing machine, and the clamping arm is reset. The operation is very convenient, and the labor intensity of manual labor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic weighing and metering, and more specifically to a bag clamping mechanism for a fertilizer quantitative packaging scale. Background Art

[0002] At present, the design of semi-automatic electronic quantitative scales is not user-friendly. The control box is far away from the bagging mechanism, and the bagging mechanism is often fixed in one place, which is very inconvenient for the staff to operate. Moreover, the existing feeding device feeds the material directly to the scale body, which can easily cause weighing deviation.

[0003] An existing patent is a semi-automatic electronic quantitative scale, and the patent authorization number is CN204587355U, which includes a frame, a scale body, a bag clamping mechanism, a control box and a conveyor belt. The scale body is arranged on the frame, and the scale body includes a weight sensor and a weighing bucket. The bag clamping mechanism is arranged below the frame, and the bag clamping mechanism includes a packaging support frame, a photosensitive sensor and a slide rail. A buffer groove is arranged at the outlet of the conveyor belt, and the buffer groove is located above the weighing bucket. The control box is connected to the bag clamping mechanism, and a pulley is arranged at the bottom of the bag clamping mechanism. The conveyor belt is used to transport materials, and the feeding is uniform. The design of the buffer groove can enable the material to continue working during bagging. The bag clamping mechanism is arranged on the slide rail to facilitate manual bagging, and the control box facilitates the staff to control the machine in time.

[0004] However, in patent authorization number CN204587355U, after the quantitative scale is used to fill the material, the filled packaging bag is conveyed out by a conveyor belt, and then the bag mouth is sewn by a sewing mechanism. Since the bag clamping mechanism in the device is used for feeding the packaging bag, when sewing the packaging bag, it is necessary to manually close the bag mouth of the packaging bag, and then use the sewing mechanism to sew the packaging bag. The operation is very inconvenient and increases the labor intensity of the manual labor. Therefore, we propose a bag clamping mechanism for a fertilizer quantitative packaging scale to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a bag clamping mechanism for a fertilizer quantitative packaging scale, which can be extended through the movable ends of two double-acting cylinders. During the rotation of the first connecting shaft rod and the second connecting shaft rod respectively coordinated at the two ends of the double-acting cylinder, the clamping arm is lifted to clamp the bag opening of the packaging bag, and at the same time, the guide wheel is fitted with the bag opening to guide the packaging bag during transportation to avoid wrinkles at the bag opening during transportation, until the bag opening of the packaging bag enters the sewing position of the sewing machine, and the clamping arm is reset. The operation is very convenient and the labor intensity of manual labor is reduced.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A bag clamping mechanism for a fertilizer quantitative packaging scale comprises a quantitative packaging scale, a conveyor belt installed below a material outlet of the quantitative packaging scale, and a stitching machine installed at the end of the conveyor belt, wherein the bag clamping mechanism is installed between the quantitative packaging scale and the stitching machine;

[0010] The bag clamping mechanism includes a mounting base symmetrically installed on the outer wall of the sewing machine close to the quantitative packaging scale, a connecting base symmetrically fixedly connected to the inner facade of the mounting base, a rotating shaft rotatably connected to the connecting base, a connecting rod symmetrically welded to the outer wall of the rotating shaft, a clamping arm installed at the bottom end of the connecting rod, a guide wheel installed at the clamping surface of the clamping arm, a first connecting shaft rod arranged above the clamping arm and welded to the connecting rod at its end, a second connecting shaft rod fixedly connected to the bottom of the mounting base, and a double-acting cylinder installed between the first connecting shaft rod and the second connecting shaft rod.

[0011] Furthermore, the mounting seat is arranged in an L-shaped structure, and a rib plate arranged in a right-angled triangle structure is welded at the bent portion of the mounting seat;

[0012] The mounting seat is symmetrically provided with mounting holes at one end close to the stitching machine.

[0013] Furthermore, a bearing is installed at the connecting seat, and the bearing is interference connected with the end of the rotating shaft.

[0014] Furthermore, the end of the clamp arm extends to a side of the discharge end of the quantitative packaging scale away from the stitching machine.

[0015] Furthermore, a plurality of guide wheels are equidistantly arranged, and the rotation directions of the plurality of guide wheels are consistent with the direction of the conveyor belt.

[0016] Furthermore, connecting ears are installed at both ends of the double-acting cylinder, and the connecting ears are rotatably connected to the first connecting shaft and the second connecting shaft respectively.

[0017] Furthermore, the gap between the clamp arms corresponds to the sewing position of the sewing machine.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) In this scheme, after the fertilizer is filled by the quantitative packaging scale, the fertilizer packaging bag is transported by the conveyor belt. At the same time, the movable ends of the two double-acting cylinders are extended. During the rotation of the first connecting shaft and the second connecting shaft at both ends of the double-acting cylinder, the clamp arm is lifted to support the bag opening of the packaging bag. At the same time, the guide wheel is fitted with the bag opening to guide the bag during the transportation process to avoid wrinkles on the bag opening. Until the bag opening of the packaging bag enters the sewing position of the sewing machine, the clamp arm is reset. The operation is very convenient and reduces the labor intensity of manual labor.

[0021] (2) This solution, by providing ribs to enhance the strength, rigidity and torsional resistance of the bending part of the mounting seat, can overcome the twisting deformation of the product caused by the uneven stress due to the difference in wall thickness of the mounting seat, thereby increasing the strength of the bending part and avoiding the deformation of the mounting seat caused by the reaction force generated during the clamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the installation of the bag clamping mechanism and the sewing machine of the utility model;

[0024] Figure 3 This is a schematic diagram of the clamp arm structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the rib structure of the utility model.

[0026] Description of the numbers in the figure:

[0027] 1. Quantitative packaging scale; 2. Conveyor belt; 3. Sewing machine; 4. Mounting seat; 5. Rib plate; 6. Connecting seat; 7. Rotating shaft; 8. Connecting rod; 9. Clamp arm; 10. Guide wheel; 11. First connecting shaft rod; 12. Second connecting shaft rod; 13. Double-acting cylinder. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0029] Example:

[0030] See also Figure 1-4A bag clamping mechanism for a fertilizer quantitative packaging scale comprises a quantitative packaging scale 1, a conveyor belt 2 installed below a material outlet of the quantitative packaging scale 1, and a sewing machine 3 installed at the end of the conveyor belt 2, wherein a bag clamping mechanism is installed between the quantitative packaging scale 1 and the sewing machine 3;

[0031] The bag clamping mechanism includes a mounting seat 4 symmetrically mounted on the outer wall of the sewing machine 3 close to the quantitative packaging scale 1, a connecting seat 6 symmetrically fixedly connected to the inner facade of the mounting seat 4, a rotating shaft 7 rotatably connected to the connecting seat 6, a connecting rod 8 symmetrically welded to the outer wall of the rotating shaft 7, a clamping arm 9 mounted at the bottom end of the connecting rod 8, a guide wheel 10 mounted at the clamping surface of the clamping arm 9, a first connecting shaft rod 11 arranged above the clamping arm 9 and having an end welded to the connecting rod 8, a second connecting shaft rod 12 fixedly connected to the bottom of the mounting seat 4, and a double-acting cylinder 13 mounted between the first connecting shaft rod 11 and the second connecting shaft rod 12;

[0032] It should be noted that when the bag clamping mechanism for the fertilizer quantitative packaging scale is in use, the double-acting cylinder 13 is connected to an external pneumatic control device, and the pneumatic control device is used to accurately control the extension and retraction of the movable ends of the two double-acting cylinders 13. After the fertilizer is filled by the quantitative packaging scale 1, the fertilizer packaging bags are conveyed by the conveyor belt 2, and at the same time, the movable ends of the two double-acting cylinders 13 are extended. In the process of the first connecting shaft 11 and the second connecting shaft 12 rotating at both ends of the double-acting cylinder 13, the clamping arm 9 is lifted to clamp the bag mouth of the packaging bag, and at the same time, the guide wheel 10 is fitted with the bag mouth, and the packaging bag is guided during the transmission process to avoid wrinkles on the bag mouth during the transmission process, until the bag mouth of the packaging bag enters the stitching position of the stitching machine 3, and the clamping arm 9 is reset. The operation is very convenient and the labor intensity of manual labor is reduced.

[0033] like Figure 4 As shown, the mounting seat 4 is arranged in an L-shaped structure, and a rib plate 5 arranged in a right-angled triangle structure is welded to the bent portion of the mounting seat 4;

[0034] The mounting base 4 has mounting holes symmetrically formed on one end close to the sewing machine 3;

[0035] It should be noted that by providing ribs 5 to enhance the strength, rigidity and torsion resistance of the bending part of the mounting seat 4, the twisting deformation of the product caused by the uneven stress due to the wall thickness difference of the mounting seat 4 can be overcome, so as to increase the strength of the bending part and avoid the reaction force generated during the clamping process causing deformation of the mounting seat 4.

[0036] like Figure 3 As shown, a bearing is installed at the connecting seat 6, and the bearing is interference-connected with the end of the rotating shaft 7;

[0037] It should be noted that the resistance of the rotating shaft 7 during the rotation process is reduced, and the rotation accuracy of the rotating shaft 7 is guaranteed.

[0038] like Figure 1 , Figure 3 As shown, the end of the clamp arm 9 extends to the side of the discharging end of the quantitative packaging scale 1 away from the stitching machine 3, a plurality of guide wheels 10 are arranged at equal intervals, and the rotation direction of the plurality of guide wheels 10 is consistent with the direction of the conveyor belt 2, and connecting ears are installed at both ends of the double-acting cylinder 13, and the connecting ears are rotatably connected to the first connecting shaft rod 11 and the second connecting shaft rod 12 respectively;

[0039] It should be noted that by extending the movable end of the double-acting cylinder 13, the clamping arm 9 is lifted to clamp the bag opening of the packaging bag, and at the same time, the guide wheel 10 is fitted with the bag opening to guide the packaging bag during transportation to avoid wrinkles at the bag opening during transportation.

[0040] like Figure 2 As shown, the gap between the clamp arms 9 corresponds to the suturing position of the suturing machine 3;

[0041] It should be noted that the packaging bag is conveyed by the conveyor belt 2 so that the bag opening of the packaging bag enters the sewing position of the sewing machine 3, thereby sewing the bag opening of the packaging bag.

[0042] During use: a pneumatic control device is externally connected to the double-acting cylinder 13, and the pneumatic control device is used to accurately control the extension and retraction of the movable ends of the two double-acting cylinders 13. After the fertilizer is filled by the quantitative packaging scale 1, the fertilizer packaging bags are conveyed by the conveyor belt 2. At the same time, the movable ends of the two double-acting cylinders 13 are extended. During the rotation of the first connecting shaft 11 and the second connecting shaft 12 at both ends of the double-acting cylinder 13, the clamp arm 9 is lifted to clamp the bag opening of the packaging bag. At the same time, the guide wheel 10 is fitted with the bag opening to guide the packaging bag during its transmission to avoid wrinkles at the bag opening during the transmission, until the bag opening of the packaging bag enters the stitching position of the stitching machine 3, and the clamp arm 9 is reset.

[0043] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A bag clamping mechanism for a fertilizer quantitative packaging scale, comprising a quantitative packaging scale (1), a conveyor belt (2) installed below a material outlet of the quantitative packaging scale (1), and a stitching machine (3) installed at the end of the conveyor belt (2), characterized in that: A bag clamping mechanism is installed between the quantitative packaging scale (1) and the stitching machine (3); The bag clamping mechanism comprises a mounting seat (4) symmetrically mounted on the outer wall of the stitching machine (3) close to the quantitative packaging scale (1), a connecting seat (6) symmetrically fixedly connected to the inner surface of the mounting seat (4), a rotating shaft (7) rotatably connected to the connecting seat (6), a connecting rod (8) symmetrically welded to the outer wall of the rotating shaft (7), a clamping arm (9) mounted at the bottom end of the connecting rod (8), a guide wheel (10) mounted on the clamping surface of the clamping arm (9), a first connecting shaft (11) arranged above the clamping arm (9) and the end of which is welded to the connecting rod (8), a second connecting shaft (12) fixedly connected to the bottom of the mounting seat (4), and a double-acting cylinder (13) mounted between the first connecting shaft (11) and the second connecting shaft (12).

2. The bag clamping mechanism for a fertilizer quantitative packaging scale according to claim 1 is characterized in that: The mounting seat (4) is arranged in an L-shaped structure, and a rib plate (5) arranged in a right-angled triangle structure is welded to the bent portion of the mounting seat (4); The mounting seat (4) is symmetrically provided with mounting holes at one end close to the sewing machine (3).

3. The bag clamping mechanism for a fertilizer quantitative packaging scale according to claim 1 is characterized in that: A bearing is installed at the connection seat (6), and the bearing is interference-connected with the end of the rotating shaft (7).

4. The bag clamping mechanism for a fertilizer quantitative packaging scale according to claim 1, characterized in that: The end of the clamp arm (9) extends to a side of the discharge end of the quantitative packaging scale (1) away from the stitching machine (3).

5. The bag clamping mechanism for a fertilizer quantitative packaging scale according to claim 1, characterized in that: A plurality of guide wheels (10) are arranged at equal intervals, and the rotation directions of the plurality of guide wheels (10) are consistent with the direction of the conveyor belt (2).

6. The bag clamping mechanism for a fertilizer quantitative packaging scale according to claim 1, characterized in that: Both ends of the double-acting cylinder (13) are provided with connecting ears, and the connecting ears are rotatably connected to the first connecting shaft (11) and the second connecting shaft (12) respectively.

7. The bag clamping mechanism for a fertilizer quantitative packaging scale according to claim 1, characterized in that: The gap between the clamp arms (9) corresponds to the sewing position of the sewing machine (3).

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