Bag holder compatible with different bag widths

Abstract

The utility model relates to the technical field of packaging machines, in particular to a bag clamping device compatible with different bag widths, which comprises a platform and a blanking hopper, a mounting port is arranged in the middle of the platform, the blanking hopper is movably arranged in the mounting port, two lifting cylinders are symmetrically arranged at the top of the platform, and the lifting cylinders are arranged on the platform. The output end of the lifting air cylinder is fixedly connected with a discharging hopper, the bottom of the discharging hopper is fixedly connected with a discharging barrel through a mounting plate, the discharging barrel communicates with the discharging hopper, the discharging barrel is arranged below the platform, and two bag opening mechanisms matched with each other are symmetrically arranged on the front side and the rear side of the discharging barrel. Two bag clamping mechanisms are symmetrically arranged on the left side and the right side of the discharging barrel, the two bag clamping mechanisms are arranged below the platform in a sliding mode through a bag stretching mechanism, and the bag stretching mechanism drives the two bag clamping mechanisms to be synchronously close to or away from the discharging barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a bag clamp compatible with bags of different widths. Background Art

[0002] In the field of packaging, for industries such as food, chemicals, and medicine, there are generally two modes of packaging: fully automatic packaging and semi-automatic packaging. Regardless of the mode or machine, there is a bag clamp. The function of the bag clamp is to clamp the packaging bag and open a circular, elliptical, or rectangular material discharge channel, so that the material above the bag clamp mechanism flows continuously into the packaging bag.

[0003] The opening size of the traditional bag clamp is fixed, that is, the size of the material discharge channel is also fixed. In the field of packaging, there is a special situation in response to customer needs. One packaging equipment must adapt to materials of multiple weight specifications, and one packaging equipment is basically equipped with only one bag clamp. Since the opening size of the traditional bag clamp is fixed, that is, the size of the material discharge channel is also fixed, for materials of different weight specifications, such as being compatible with both 5kg and 25kg weight specifications, the width and length of the 5kg packaging bag are much smaller than the width and length of the 25kg packaging bag. To adapt to these two bag sizes, since the same bag clamp is used, the opening size of the bag clamp must be designed based on the smaller bag size of 5kg. In this case, if 25kg of material is to be packaged, the material discharge speed of 25kg material will be slower due to the smaller material discharge channel, which will greatly affect the overall efficiency of packaging.

[0004] Therefore, it is urgent to design a bag clamp that is compatible with different bag widths, which can automatically adjust the size of the bag clamp for materials of different weight specifications, thereby achieving a bag clamp that can adapt to materials of different weight specifications without affecting the unloading speed and ensuring the overall efficiency of packaging. Utility Model Content

[0005] The utility model aims to provide a bag clamp which is compatible with bags of different widths.

[0006] A bag clamp compatible with different bag widths comprises a platform and a lower hopper, a mounting opening is provided in the middle of the platform, the lower hopper is movably arranged in the mounting opening, two lifting cylinders are symmetrically arranged on the top of the platform, the output ends of the lifting cylinders are fixedly connected to the lower hopper, the bottom of the lower hopper is fixedly connected to a discharge barrel communicated with the lower hopper via a mounting plate, the discharge barrel is arranged below the platform, two bag picking mechanisms cooperating with each other are symmetrically arranged on the front and rear sides of the discharge barrel, two bag clamping mechanisms are symmetrically arranged on the left and right sides of the discharge barrel, the two bag clamping mechanisms are slidably arranged below the platform via a bag stretching mechanism, and the bag stretching mechanism drives the two bag clamping mechanisms to synchronously approach or move away from the discharge barrel.

[0007] Furthermore, the bag picking mechanism includes a bag picking cylinder and a bag picking plate. The bag picking cylinder is rotatably arranged on the top of the mounting plate. The output end of the bag picking cylinder is hinged with a bag picking plate fixing seat. Two bag picking plates cooperate with each other and are symmetrically rotatably arranged at the lower part of the discharge barrel. The bag picking plate fixing seat and the bag picking plates are fixedly connected. The joint of the two bag picking plates is provided with a bag picking plate baffle fixedly connected to the discharge barrel.

[0008] Furthermore, the bag clamping mechanism includes a bag clamping cylinder mounting plate and a clamping plate connecting rod, the bag clamping cylinder mounting plate being slidably arranged below the platform, a bag clamping cylinder being fixedly arranged at the top center of the bag clamping cylinder mounting plate, a bag clamping joint being arranged after the output end of the bag clamping cylinder passes through the bag clamping cylinder mounting plate, two bag clamping connecting rods rotatably connected thereto are symmetrically arranged on both sides of the bag clamping joint, a clamping plate connecting rod mounting plate is fixedly arranged on the lower part of the bag clamping cylinder mounting plate, the middle part of the clamping plate connecting rod is rotatably connected to the clamping plate connecting rod mounting plate, one end of the clamping plate connecting rod is rotatably connected to the bag clamping connecting rod, a clamping plate is fixedly arranged on the other end of the plate connecting rod, and clamping plate grooves matching each other are arranged on the side where the two clamping plates are close to each other.

[0009] Furthermore, the bag stretching mechanism includes a bag stretching motor, a bag stretching gear, a bag stretching rack, a slide groove and a slide rail. Slide grooves are provided on the left and right sides of the top of the bag clamping cylinder mounting plate. The slide grooves are slidably set under the platform through the slide rails cooperating therewith. The bag stretching motor is fixedly set on the top of the platform. The output end of the bag stretching motor passes through the platform and is fixedly connected to the bag stretching gear. Two rack slides are fixedly set at the bottom of the platform. A bag stretching rack is slidably set in the rack slide. The two bag stretching racks are respectively set on both sides of the bag stretching rack and meshed with it. The top of the bag clamping cylinder mounting plate is fixedly connected to the bag stretching rack.

[0010] In summary, the utility model has the following beneficial effects:

[0011] The two bag clamping mechanisms of the utility model clamp the left and right sides of the top bag opening of the packaging bag; the lifting cylinder is used to drive the lower hopper, the discharge barrel and the bag picking mechanism to make the bag picking mechanism close to or away from the top bag opening of the packaging bag; the bag stretching mechanism drives the two bag clamping mechanisms to synchronously approach or move away from the discharge barrel to straighten the top of the packaging bag; the bag picking mechanism is opened or closed to control the discharge or stop of the materials in the lower hopper and the discharge barrel. The utility model realizes that a bag clamp can adapt to materials of different weight specifications without affecting the discharge speed by setting the lifting cylinder, the bag picking mechanism, the bag clamping mechanism and the bag stretching mechanism that drives the two bag clamping mechanisms to synchronously approach or move away. It can also ensure the overall efficiency of packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0013] Figure 1 The three-dimensional structure of a bag clamp compatible with different bag widths of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 2 The three-dimensional structure of a bag clamp compatible with different bag widths of the utility model is shown in FIG. Figure 2 ;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the bag picking mechanism of the utility model;

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the bag clamping mechanism of the utility model.

[0017] In the figure: 1 platform, 2 mounting port, 3 lifting cylinder, 4 lower hopper, 5 discharge barrel, 6 mounting plate, 7 bag picking mechanism, 71 bag picking cylinder, 72 bag picking plate fixing seat, 73 bag picking plate, 74 bag picking plate baffle, 8 bag stretching mechanism, 81 bag stretching motor, 82 bag stretching gear, 83 bag stretching rack, 84 rack slide, 85 slide groove, 86 slide rail, 9 bag clamping mechanism, 91 bag clamping cylinder mounting plate, 92 bag clamping cylinder, 93 bag clamping joint, 94 bag clamping connecting rod, 95 splint connecting rod, 96 splint, 97 splint connecting rod mounting plate, 98 splint groove. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The following is combined with Figure 1-4 The utility model is further described as follows:

[0020] A bag clamp compatible with different bag widths comprises a platform 1 and a lower hopper 4, a mounting opening 2 is provided in the middle of the platform 1, the lower hopper 4 is movably arranged in the mounting opening 2, two lifting cylinders 3 are symmetrically arranged on the top of the platform 1, the output ends of the lifting cylinders 3 are fixedly connected to the lower hopper 4, the bottom of the lower hopper 4 is fixedly connected to a discharge barrel 5 connected thereto via a mounting plate 6, the discharge barrel 5 is arranged below the platform 1, two bag picking mechanisms 7 cooperating with each other are symmetrically arranged on the front and rear sides of the discharge barrel 5, two bag clamping mechanisms 9 are symmetrically arranged on the left and right sides of the discharge barrel 5, the two bag clamping mechanisms 9 are slidably arranged below the platform 1 through a bag stretching mechanism 8, and the bag stretching mechanism 8 drives the two bag clamping mechanisms 9 to synchronously approach or move away from the discharge barrel 5.

[0021] In this embodiment, two bag clamping mechanisms 9 clamp the left and right sides of the top bag opening of the packaging bag; the lifting cylinder 3 is used to drive the lower hopper 4, the discharge tube 5 and the bag picking mechanism 7 to make the bag picking mechanism 7 close to or away from the top bag opening of the packaging bag; the bag stretching mechanism 8 drives the two bag clamping mechanisms 9 to synchronously approach or move away from the discharge tube 5 to straighten the top of the packaging bag; the bag picking mechanism 7 is opened or closed to control the discharge or stop of the materials in the lower hopper 4 and the discharge tube 5. The utility model realizes that a bag clamp can adapt to materials of different weight specifications without affecting the discharge speed by setting the lifting cylinder 3, the bag picking mechanism 7, the bag clamping mechanism 9 and the bag stretching mechanism 8 that drives the two bag clamping mechanisms 9 to synchronously approach or move away. It can also ensure the overall efficiency of packaging.

[0022] The bag picking mechanism 7 includes a bag picking cylinder 71 and a bag picking plate 73. The bag picking cylinder 71 is rotatably arranged on the top of the mounting plate 6. The output end of the bag picking cylinder 71 is hinged with a bag picking plate fixing seat 72. The two bag picking plates 73 cooperate with each other and are symmetrically rotatably arranged at the lower part of the discharge barrel 5. The bag picking plate fixing seat 72 and the bag picking plates 73 are fixedly connected. The joint of the two bag picking plates 73 is provided with a bag picking plate baffle 74 fixedly connected to the discharge barrel 5.

[0023] In this embodiment, when the output end of the bag-lifting cylinder 71 contracts, the bag-lifting plate fixing seat 72 and the bag-lifting plate 73 are driven to rotate outward with the hinge point between the bag-lifting plate 72 and the discharging barrel 5 as the axis, and the two bag-lifting plates 73 are opened at the same time, so that the bag-lifting plates 73 can support the inner side of the top bag opening of the packaging bag to prevent the bag opening from being deformed due to the accumulation of materials in the middle of the packaging bag during material discharge. On the contrary, when the output end of the bag-lifting cylinder 71 is stretched, the two bag-lifting plates 73 are closed at the same time, and the lower part of the discharging barrel 5 is sealed in cooperation with the bag-lifting plate baffle 74 to prevent the material from flowing out. Preferably, the bag-lifting cylinder 71 is a multi-stroke, and the opening size of the two bag-lifting plates 73 is controlled by the formation of the bag-lifting cylinder 71 to adapt to packaging bags with different opening sizes.

[0024] The bag clamping mechanism 9 includes a bag clamping cylinder mounting plate 91 and a splint connecting rod 95. The bag clamping cylinder mounting plate 91 is slidably arranged below the platform 1. A bag clamping cylinder 92 is fixedly arranged at the top center of the bag clamping cylinder mounting plate 91. A bag clamping joint 93 is arranged after the output end of the bag clamping cylinder 92 passes through the bag clamping cylinder mounting plate 91. Two bag clamping connecting rods 94 rotatably connected thereto are symmetrically arranged on both sides of the bag clamping joint 93. A splint connecting rod mounting plate 97 is fixedly arranged at the lower part of the bag clamping cylinder mounting plate 91. The middle part of the splint connecting rod 95 is rotatably connected to the splint connecting rod mounting plate 97. One end of the splint connecting rod 95 is rotatably connected to the bag clamping connecting rod 94. A splint 96 is fixedly arranged at the other end of the plate connecting rod 95. A splint groove 98 that cooperates with each other is arranged on the side where the two splints 96 are close to each other.

[0025] In this embodiment, when the output end of the bag clamping cylinder 92 contracts, the bag clamping joint 93 moves upward, and the bag clamping joint 93 drives the two clamping plate connecting rods 95 through the two bag clamping connecting rods 94 to rotate with the hinge point between the middle part and the clamping plate connecting rod mounting plate 97 as the axis, so that the two clamping plates 96 are close to each other, and the clamping plate grooves 98 on the two clamping plates 96 cooperate with each other to clamp the packaging bag, so that the packaging bag is not easy to loosen. On the contrary, when the output end of the bag clamping cylinder 92 is relaxed, the clamping plate grooves 98 on the two clamping plates 96 cooperate with each other to loosen the packaging bag.

[0026] The bag stretching mechanism 8 includes a bag stretching motor 81, a bag stretching gear 82, a bag stretching rack 83, a slide groove 85 and a slide rail 86. Slide grooves 85 are arranged on the left and right sides of the top of the bag clamping cylinder mounting plate 91. The slide groove 85 is slidably arranged under the platform 1 through the slide rail 86 matched therewith. The bag stretching motor 81 is fixedly arranged on the top of the platform 1. The output end of the bag stretching motor 81 passes through the platform 1 and is fixedly connected to the bag stretching gear 82. Two rack slides 84 are fixedly arranged at the bottom of the platform 1. The rack slides 84 are slidably arranged with a bag stretching rack 83. The two bag stretching racks 83 are respectively arranged on both sides of the bag stretching rack 83 and are meshed with it. The top of the bag clamping cylinder mounting plate 91 is fixedly connected to the bag stretching rack 83.

[0027] In this embodiment, the output end of the bag stretching motor 81 rotates and drives the two bag stretching racks 83 to move away from each other through the bag stretching gear 82. The two bag stretching racks 83 drive the two bag clamping mechanisms 9 connected thereto to move away synchronously along the slide groove 85 and the slide rail 86, and straighten the top of the packaging bag. By setting the bag stretching mechanism 8, the distance between the two bag clamping mechanisms 9 can be synchronously adjusted, so that the bag clamp can be compatible with different bag widths.

[0028] When in use, the packaging bag is conveyed manually or by conveying equipment to the bottom of the two mutually cooperating bag picking mechanisms 7, the output end of the bag clamping cylinder 92 is controlled to contract, the bag clamping joint 93 moves upward, and the bag clamping joint 93 drives the two clamping plate connecting rods 95 through the two bag clamping connecting rods 94 to rotate with the hinge point between the middle part and the clamping plate connecting rod mounting plate 97 as the axis, so that the two clamping plates 96 are close to each other, and the clamping plate grooves 98 on the two clamping plates 96 cooperate with each other to clamp the packaging bag, so that the packaging bag is not easy to loosen. The output end of the lifting cylinder 3 contracts, and the two mutually cooperating bag picking mechanisms 7 are inserted into the bag mouth of the packaging bag. The output end of the bag stretching motor 81 is controlled to rotate, and the bag stretching gear 82 drives the two bag clamping mechanisms 9 connected thereto to move away synchronously along the slide groove 85 and the slide rail 86 through the two bag stretching racks 83. At the same time, the output end of the bag picking cylinder 71 contracts, and the bag picking plate fixing seat 72 and the bag picking plate 73 rotate outwardly around the hinge point with the discharge barrel 5, and the two bag picking plates 73 open at the same time. The bag picking plates 73 prop up the inner side of the top bag opening of the packaging bag, and the bag opening of the packaging bag opens to form a rectangular opening, and the material enters the packaging bag.

[0029] After the discharge is completed, the output end of the bag-lifting cylinder 71 is stretched, and the two bag-lifting plates 73 are closed at the same time, and the lower part of the discharge barrel 5 is sealed in cooperation with the bag-lifting plate baffle 74 to prevent the material from flowing out. The output end of the lifting cylinder 3 is stretched, and the two bag-lifting mechanisms 7 that cooperate with each other are pulled out from the bag mouth of the packaging bag and moved above the packaging bag. The output end of the bag-stretching motor 81 rotates, and the bag-stretching gear 82 drives the two bag-clamping mechanisms 9 connected thereto to move away synchronously along the slide groove 85 and the slide rail 86 through the two bag-stretching racks 83, and straightens the bag mouth of the packaging bag. The output end of the bag-clamping cylinder 92 is stretched, and the clamping grooves 98 that cooperate with each other on the two clamping plates 96 loosen the packaging bag filled with materials.

[0030] In summary, the present invention is not limited to the above specific embodiments. Those skilled in the art may make several changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the claims of the present invention.

[0031] 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 drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0032] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

Claims

1. A bag clamp compatible with bags of different widths, characterized in that: The utility model comprises a platform (1) and a lower hopper (4), wherein a mounting opening (2) is provided in the middle of the platform (1), and the lower hopper (4) is movably arranged in the mounting opening (2). Two lifting cylinders (3) are symmetrically arranged on the top of the platform (1), and the output ends of the lifting cylinders (3) are fixedly connected to the lower hopper (4), and the bottom of the lower hopper (4) is fixedly connected to a discharge barrel (5) connected thereto through a mounting plate (6), and the discharge barrel (5) is arranged below the platform (1), and two mutually cooperating bag picking mechanisms (7) are symmetrically arranged on the front and rear sides of the discharge barrel (5), and two bag clamping mechanisms (9) are symmetrically arranged on the left and right sides of the discharge barrel (5), and the two bag clamping mechanisms (9) are slidably arranged below the platform (1) through a bag stretching mechanism (8), and the bag stretching mechanism (8) drives the two bag clamping mechanisms (9) to synchronously approach or move away from the discharge barrel (5).

2. A bag clamp compatible with bags of different widths as claimed in claim 1, characterized in that: The bag picking mechanism (7) comprises a bag picking cylinder (71) and a bag picking plate (73); the bag picking cylinder (71) is rotatably arranged on the top of the mounting plate (6); the output end of the bag picking cylinder (71) is hingedly connected to a bag picking plate fixing seat (72); two bag picking plates (73) cooperate with each other and are symmetrically rotatably arranged at the lower part of the discharge barrel (5); the bag picking plate fixing seat (72) and the bag picking plates (73) are fixedly connected; and a bag picking plate baffle (74) fixedly connected to the discharge barrel (5) is provided at the joint of the two bag picking plates (73).

3. A bag clamp compatible with bags of different widths as claimed in claim 2, characterized in that: The bag clamping mechanism (9) comprises a bag clamping cylinder mounting plate (91) and a clamping plate connecting rod (95). The bag clamping cylinder mounting plate (91) is slidably arranged below the platform (1). A bag clamping cylinder (92) is fixedly arranged at the top center of the bag clamping cylinder mounting plate (91). The output end of the bag clamping cylinder (92) passes through the bag clamping cylinder mounting plate (91) and is provided with a bag clamping joint (93). Two symmetrically arranged two sides of the bag clamping joint (93) are rotatably connected to the bag clamping joint (93). The bag clamping connecting rod (94) is connected to the bag clamping cylinder mounting plate (91), a clamping connecting rod mounting plate (97) is fixedly provided at the lower part of the bag clamping cylinder mounting plate (91), the middle part of the clamping connecting rod (95) is rotatably connected to the clamping connecting rod mounting plate (97), one end of the clamping connecting rod (95) is rotatably connected to the bag clamping connecting rod (94), and a clamping plate (96) is fixedly provided at the other end of the plate connecting rod (95), and a clamping plate groove (98) that matches each other is provided on the side where the two clamping plates (96) are close to each other.

4. A bag clamp compatible with bags of different widths as claimed in claim 3, characterized in that: The bag stretching mechanism (8) comprises a bag stretching motor (81), a bag stretching gear (82), a bag stretching rack (83), a slide groove (85) and a slide rail (86). The left and right sides of the top of the bag clamping cylinder mounting plate (91) are both provided with slide grooves (85). The slide grooves (85) are slidably arranged below the platform (1) through the slide rails (86) matched therewith. The bag stretching motor (81) is fixedly arranged on the top of the platform (1). The output end of the bag stretching motor (81) passes through the platform (1) and is fixedly connected to the bag stretching gear (82). Two rack slides (84) are fixedly arranged on the bottom of the platform (1). The rack slides (84) are slidably arranged with a bag stretching rack (83). The two bag stretching racks (83) are respectively arranged on both sides of the bag stretching rack (83) and meshedly connected therewith. The top of the bag clamping cylinder mounting plate (91) is fixedly connected to the bag stretching rack (83).

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