Elliptical-opening closed bag holder

Abstract

The utility model discloses an oval-opening closed bag holder which comprises a mounting plate and a discharging pipe, an oval discharging pipe communicated with the discharging pipe is fixedly arranged on the lower portion of the discharging pipe, two bag pressing devices matched with the oval discharging pipe are symmetrically arranged on the front side and the rear side of the oval discharging pipe, and detection suction pipes are arranged on the bag pressing devices. Two edge clamping devices are symmetrically arranged on the left side and the right side of the oval discharging pipe, an edge clamping lifting device is arranged below the mounting plate, and the edge clamping devices are connected with the edge clamping lifting device through edge clamping moving devices. The two clamping plates synchronously move inwards and upwards, the action that the opening of the packaging bag is arranged outside the oval discharging pipe in a sleeving mode, the action that the two clamping plates synchronously move downwards and outwards, the action that the packaging bag filled with materials is separated from the oval discharging pipe, and the action that the opening of the packaging bag is straightened are all achieved through the lifting air cylinder. The sealing device is good in sealing performance, simple in structure, stable in operation, capable of saving manufacturing cost and occupied area, convenient to machine and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to an elliptical-mouthed sealed bag clamp. Background Art

[0002] In the packaging industry, for industries like chemicals, pharmaceuticals, and food, fully automatic and semi-automatic packaging are common. Regardless of the mode or machine, a bag clamp is always present. The function of the bag clamp is to clamp the bag and open a circular, oval, or rectangular material discharge channel, allowing the material above the clamp to flow continuously into the bag. The discharge barrel of the bag-opening mechanism of a traditional bag clamp is typically composed of two separate U-shaped, semi-circular, or rectangular grooves, so gaps are inevitable.

[0003] However, for powdery materials, the above-mentioned traditional bag clamp discharge barrel is not airtight, and dust is easy to leak out; and the two actions of straightening the bag mouth and disengaging the bag mouth of the traditional bag clamp are controlled by two groups (four) of independent cylinders, which are relatively expensive and the mechanism occupies a large area. The bag mouth straightening function and the freedom of disengaging the bag mouth are limited and are mostly achieved by using guide rail sliders or parallelogram mechanisms. The guide rail sliders are easy to wear for dusty materials and have high requirements for processing precision and high cost. The parallelogram mechanism requires a very long connecting rod, which occupies a large space in the vertical direction, resulting in an increase in the size of the entire bag clamp.

[0004] Therefore, it is urgent to design a kind of oval mouth airtight bag clamping device. Utility Model Content

[0005] The purpose of the utility model is to provide an elliptical-mouth sealed bag clamp.

[0006] An elliptical-mouthed sealed bag clamp comprises a mounting plate and a discharge tube, wherein an elliptical discharge tube connected thereto is fixedly provided at the lower portion of the discharge tube, two bag pressing devices cooperating therewith are symmetrically provided on the front and rear sides of the elliptical discharge tube, a detection straw is provided on the bag pressing device, two edge clamping devices are symmetrically provided on the left and right sides of the elliptical discharge tube, an edge clamping lifting device is provided below the mounting plate, and the edge clamping device is connected to the edge clamping lifting device via an edge clamping moving device.

[0007] Furthermore, the bag pressing device includes a bag pressing cylinder, a connecting rod and a bag pressing arc plate. The two bag pressing cylinders are symmetrically rotated on the front and rear sides of the elliptical discharge pipe through the bag pressing cylinder seat. The output end of the bag pressing cylinder is fixedly connected to the middle part of the connecting rod. The lower part of the bag pressing cylinder seat is provided with a guide seat fixedly connected to the elliptical discharge pipe. The outer side of the bag pressing arc plate is fixedly provided with a bag pressing arc plate seat. The two ends of the connecting rod are respectively rotatably connected to the bag pressing arc plate seat and the guide seat. The detection straw passes through the bag pressing arc plate and is fixedly connected to it.

[0008] Furthermore, the edge clamping lifting device includes channel steel rails symmetrically arranged on the left and right sides of the elliptical discharge pipe, the channel steel rails are fixedly connected to the bottom of the mounting plate, a connecting plate is provided between the two channel steel rails, and lifting rollers that are rotatably provided at both ends of the connecting plate and contact and cooperate with the channel steel rails are fixedly provided, and a lifting cylinder is fixedly provided on the top of the mounting plate, and the output end of the lifting cylinder passes through the mounting plate and is fixedly connected to the connecting plate.

[0009] Furthermore, the edge clamping device includes an edge clamping seat and an edge clamping cylinder fixedly arranged on the top of the edge clamping seat, the output end of the edge clamping cylinder passes through the edge clamping seat and a edge clamping joint is fixedly arranged thereafter, and two matching clamping plates are rotatably arranged on the front and rear sides of the edge clamping joint, and the clamping plates are rotatably connected to the edge clamping seat through a clamping plate shaft.

[0010] Furthermore, the edge clamping moving device includes a translation slide rail, a translation slide seat and a wing plate. The two translation slide rails are symmetrically arranged on the left and right sides of the lower part of the connecting plate. The translation slide seat is fixedly arranged on one side of the edge clamping seat. A moving roller that contacts and cooperates with the translation slide rail is rotatably provided on the translation slide. The wing plate is arranged on the side away from the connecting plate. The wing plate is fixedly connected to the elliptical discharge pipe. A moving slide groove is provided on the wing plate. A crank arm is fixedly provided on the other side of the edge clamping seat. The upper part of the crank arm is rotatably provided with a moving pulley that cooperates with the moving slide groove.

[0011] Furthermore, auxiliary pull plates are provided on both sides of the connecting rod, and the auxiliary pull plates are rotatably connected to the bag pressing arc plate seat and the guide seat.

[0012] Furthermore, an anti-slip sheet is provided on the inner side of the splint.

[0013] In summary, the present invention has the following beneficial effects:

[0014] The arc of the bag-pressing plate in this utility model matches the arc of the elliptical discharge tube. The two arc-pressing plates and the elliptical discharge tube work together to compress the bag opening tightly, ensuring a tight seal and preventing dust from escaping. The synchronous inward and upward movement of the two clamps, which slide the bag opening over the elliptical discharge tube, and the synchronous downward and outward movement of the two clamps, which release the filled bag from the elliptical discharge tube and straighten the bag opening, are both accomplished by a lifting cylinder. This utility model offers a simple structure, stable operation, reduced manufacturing costs and floor space, ease of processing, and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 The three-dimensional structure of the utility model of an elliptical mouth closed bag clamp Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model of an elliptical mouth closed bag clamp Figure 2 ;

[0018] Figure 3 The three-dimensional structure of the utility model of an elliptical mouth closed bag clamp Figure 3 ;

[0019] Figure 4 The three-dimensional structure of the utility model of an elliptical mouth closed bag clamp Figure 4 ;

[0020] Figure 5 This is a side view of an elliptical-mouthed sealed bag clamp of the present invention;

[0021] Figure 6 This is a front view of an elliptical-mouthed sealed bag clamp of the present invention.

[0022] In the figure: 1 mounting plate, 2 discharge pipe, 3 elliptical discharge pipe, 4 edge clamping lifting device, 41 channel steel track, 42 ​​connecting plate, 43 lifting cylinder, 44 lifting roller, 5 edge clamping moving device, 51 translation slide rail, 52 translation slide seat, 53 moving roller, 54 wing plate, 55 moving slide, 56 crank arm, 57 moving pulley, 6 edge clamping device, 61 edge clamping seat, 62 edge clamping cylinder, 63 edge clamping joint, 64 splint, 65 splint shaft, 66 anti-slip sheet, 7 bag pressing device, 71 bag pressing cylinder, 72 bag pressing cylinder seat, 73 connecting rod, 74 bag pressing arc plate, 75 bag pressing arc plate seat, 76 guide seat, 77 auxiliary pull plate, 8 detection straw. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The following is combined with Figure 1-6 The utility model is further described as follows:

[0025] An elliptical-mouthed sealed bag clamp comprises a mounting plate 1 and a discharge pipe 2. An elliptical discharge pipe 3 connected thereto is fixedly provided at the lower portion of the discharge pipe 2. Two bag pressing devices 7 cooperating therewith are symmetrically provided on the front and rear sides of the elliptical discharge pipe 3. A detection straw 8 is provided on the bag pressing device 7. Two edge clamping devices 6 are symmetrically provided on the left and right sides of the elliptical discharge pipe 3. An edge clamping lifting device 4 is provided below the mounting plate 1. The edge clamping device 6 is connected to the edge clamping lifting device 4 through an edge clamping moving device 5.

[0026] In this embodiment, two edge clamping devices 6 are used to clamp the left and right sides of the bag opening; the edge clamping lifting device 4 and the edge clamping moving device 5 synchronously adjust the distance between the two edge clamping devices 6 to achieve the movement of the bag opening being fitted onto and detached from the elliptical discharge tube 3. Two bag pressing devices 7 are used to seal and press the bag opening onto the outside of the elliptical discharge tube 3. A detection straw 8 is used to open the bag opening of the bag. Preferably, the detection straw 8 is connected to a pressure gauge. When the detection straw 8 sucks the bag opening, the pressure gauge value changes, and subsequent actions continue. When the detection straw 8 does not suck the bag opening, the pressure gauge value remains unchanged, and subsequent actions are paused to prevent the material from being unable to be loaded into the bag.

[0027] The edge clamping device 6 includes an edge clamping seat 61 and an edge clamping cylinder 62 fixedly arranged on the top of the edge clamping seat 61. The output end of the edge clamping cylinder 62 passes through the edge clamping seat 61 and is fixedly provided with an edge clamping joint 63. Two matching clamping plates 64 are rotatably provided on the front and rear sides of the edge clamping joint 63. The clamping plate 64 is rotatably connected to the edge clamping seat 61 through the clamping plate shaft 65. An anti-slip sheet 66 is provided on the inner side of the clamping plate 64.

[0028] In this embodiment, the output end of the clamping cylinder 62 drives the two clamping plates 64 to move synchronously by contraction and extension, and the two clamping plates 64 cooperate with each other to clamp and release the left and right sides of the bag opening.

[0029] When the output end of the clamping cylinder 62 contracts, the clamping joint 63 moves upward, driving the clamping plates 64 to rotate about the clamping plate axis 65, bringing the two clamping plates 64 closer together. The anti-slip sheet 66 on the inner side of the two clamping plates 64 clamps the packaging bag tightly, preventing it from loosening. Conversely, when the output end of the clamping cylinder 602 extends, the two clamping plates 64 move away from each other, loosening the packaging bag.

[0030] The bag pressing device 7 includes a bag pressing cylinder 71, a connecting rod 73 and a bag pressing arc plate 74. The two bag pressing cylinders 71 are symmetrically rotatably arranged on the front and rear sides of the elliptical discharge pipe 3 through the bag pressing cylinder seat 72. The output end of the bag pressing cylinder 71 is fixedly connected to the middle of the connecting rod 73. The lower part of the bag pressing cylinder seat 72 is provided with a guide seat 76 fixedly connected to the elliptical discharge pipe 3. A bag pressing arc plate seat 75 is fixedly provided on the outer side of the bag pressing arc plate 74. The two ends of the connecting rod 73 are rotatably connected to the bag pressing arc plate seat 75 and the guide seat 76 respectively. The detection straw 8 passes through the bag pressing arc plate 74 and is fixedly connected to it. Auxiliary pull plates 77 are provided on both sides of the connecting rod 73, and the auxiliary pull plates 77 are rotatably connected to the bag pressing arc plate seat 75 and the guide seat 76 respectively.

[0031] In this embodiment, the bag pressing cylinder 71 is used to drive the bag pressing arc plate 74 to seal the bag opening against the outside of the elliptical discharge pipe 3. Preferably, the curvature of the bag pressing arc plate 74 is consistent with the curvature of the elliptical discharge pipe 3. The two bag pressing arc plates 74 and the elliptical discharge pipe 3 cooperate to press the bag opening tightly, thereby achieving a good seal and preventing dust from leaking out.

[0032] When the output end of the bag-pressing cylinder 71 extends, it drives the bag-pressing arc plate seat 75 and the bag-pressing arc plate 74 inward via the connecting rod 73. The two bag-pressing arc plates 74 move inward synchronously, sealing the bag opening against the outside of the oval discharge tube 3. Conversely, when the output end of the bag-pressing cylinder 71 contracts, the bag-pressing arc plates 74 move outward, no longer pressing the bag opening.

[0033] The edge clamping lifting device 4 includes channel steel rails 41 symmetrically arranged on the left and right sides of the elliptical discharge pipe 3. The channel steel rails 41 are fixedly connected to the bottom of the mounting plate 1. A connecting plate 42 is arranged between the two channel steel rails 41. Lifting rollers 44 that are rotatably arranged at both ends of the connecting plate 42 and contact and cooperate with the channel steel rails 41. A lifting cylinder 43 is fixedly arranged on the top of the mounting plate 1. The output end of the lifting cylinder 43 passes through the mounting plate 1 and is fixedly connected to the connecting plate 42.

[0034] The edge clamping moving device 5 includes a translation slide 51, a translation slide 52 and a wing plate 54. The two translation slides 51 are symmetrically arranged on the left and right sides of the lower part of the connecting plate 42. The translation slide 52 is fixedly arranged on one side of the edge clamping seat 61. A moving roller 53 that contacts and cooperates with the translation slide 51 is rotatably provided on the translation slide 52. The wing plate 54 is arranged on the side away from the connecting plate 42. The wing plate 54 is fixedly connected to the elliptical discharge pipe 3. A moving slide groove 55 is provided on the wing plate 54. A crank arm 56 is fixedly provided on the other side of the edge clamping seat 61. The upper part of the crank arm 56 is rotatably provided with a moving pulley 57 that cooperates with the moving slide groove 55.

[0035] In this embodiment, the two splints 64 move inward and upward synchronously to put the bag opening of the packaging bag on the outside of the elliptical discharge tube 3, and the two splints 64 move downward and outward synchronously to separate the packaging bag filled with materials from the elliptical discharge tube 3 and straighten the bag opening of the packaging bag are both achieved by the lifting cylinder 43.

[0036] When the output end of the lifting cylinder 43 contracts, the connecting plate 42 moves upward along the channel rail 41 via the lifting roller 44, and the translation rail 51 fixed to the lower portion of the connecting plate 42 also moves upward synchronously. The translation rail 51 moves upward, guided by the moving pulley 57 and the moving chute 55, driving the moving roller 53, which in turn drives the translation slide 52, the edge clamping seat 61, the edge clamping cylinder 62, and the crank arm 56 inward. This synchronizes the inward and upward movement of the two clamping plates 64, allowing the bag opening to fit over the exterior of the elliptical discharge tube 3.

[0037] Conversely, when the output end of the lifting cylinder 43 extends, the connecting plate 42 and the translation rail 51 move downward. The translation slide 52, the edge clamping seat 61, the edge clamping cylinder 62, and the crank arm 56, guided by the movable pulley 57 and the movable chute 55, move outward along the translation rail 51 via the movable roller 53. This synchronizes the downward and outward movement of the two clamping plates 64, allowing the filled packaging bag to be released from the elliptical discharge pipe 3 and straightening the bag opening.

[0038] In summary, the present invention is not limited to the above-described specific embodiments. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be based on the claims of the present invention.

[0039] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0040] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

Claims

1. An elliptical closed bag clamp, comprising a mounting plate (1) and a discharge pipe (2), characterized in that: An elliptical discharge pipe (3) connected to the discharge pipe (2) is fixedly provided at the lower part thereof, two bag pressing devices (7) cooperating therewith are symmetrically provided on the front and rear sides of the elliptical discharge pipe (3), a detection straw (8) is provided on the bag pressing device (7), two edge clamping devices (6) are symmetrically provided on the left and right sides of the elliptical discharge pipe (3), an edge clamping lifting device (4) is provided below the mounting plate (1), and the edge clamping device (6) is connected to the edge clamping lifting device (4) via an edge clamping moving device (5).

2. The oval-mouth sealed bag clamp according to claim 1, characterized in that: The bag pressing device (7) comprises a bag pressing cylinder (71), a connecting rod (73) and a bag pressing arc plate (74). The two bag pressing cylinders (71) are symmetrically rotatably arranged on the front and rear sides of the elliptical discharge pipe (3) through the bag pressing cylinder seat (72). The output end of the bag pressing cylinder (71) is fixedly connected to the middle part of the connecting rod (73). The lower part of the bag pressing cylinder seat (72) is provided with a guide seat (76) fixedly connected to the elliptical discharge pipe (3). The outer side of the bag pressing arc plate (74) is fixedly provided with a bag pressing arc plate seat (75). The two ends of the connecting rod (73) are rotatably connected to the bag pressing arc plate seat (75) and the guide seat (76) respectively. The detection straw (8) passes through the bag pressing arc plate (74) and is fixedly connected to it.

3. The oval-mouth sealed bag clamp according to claim 2, characterized in that: The edge clamping lifting device (4) includes channel steel rails (41) symmetrically arranged on the left and right sides of the elliptical discharge pipe (3), the channel steel rails (41) are fixedly connected to the bottom of the mounting plate (1), a connecting plate (42) is arranged between the two channel steel rails (41), and lifting rollers (44) that are rotatably arranged at both ends of the connecting plate (42) and contact and cooperate with the channel steel rails (41) are fixedly arranged on the top of the mounting plate (1), and the output end of the lifting cylinder (43) passes through the mounting plate (1) and is fixedly connected to the connecting plate (42).

4. The oval-mouth sealed bag clamp according to claim 3, characterized in that: The edge clamping device (6) includes an edge clamping seat (61) and an edge clamping cylinder (62) fixedly arranged on the top of the edge clamping seat (61); the output end of the edge clamping cylinder (62) passes through the edge clamping seat (61) and is fixedly arranged with an edge clamping joint (63); two matching clamping plates (64) are rotatably arranged on the front and rear sides of the edge clamping joint (63); the clamping plates (64) are rotatably connected to the edge clamping seat (61) through a clamping plate shaft (65).

5. The oval-mouth sealed bag clamp according to claim 4, characterized in that: The edge clamping moving device (5) includes a translation slide (51), a translation slide (52) and a wing plate (54), the two translation slides (51) are symmetrically arranged on the left and right sides of the lower part of the connecting plate (42), the translation slide (52) is fixedly arranged on one side of the edge clamping seat (61), the translation slide (52) is rotatably provided with a moving roller (53) that contacts and cooperates with the translation slide (51), the wing plate (54) is arranged on the side away from the connecting plate (42), the wing plate (54) is fixedly connected to the elliptical discharge pipe (3), the wing plate (54) is provided with a moving slide groove (55), the other side of the edge clamping seat (61) is fixedly provided with a crank arm (56), and the upper part of the crank arm (56) is rotatably provided with a moving pulley (57) that cooperates with the moving slide groove (55).

6. The oval-mouth sealed bag clamp according to claim 2, characterized in that: Auxiliary pull plates (77) are provided on both sides of the connecting rod (73), and the auxiliary pull plates (77) are respectively rotatably connected to the bag pressing arc plate seat (75) and the guide seat (76).

7. The oval-mouth sealed bag clamp according to claim 4, characterized in that: An anti-slip sheet (66) is provided on the inner side of the clamping plate (64).

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