Bag throwing mechanism and packaging production line

Abstract

The bag throwing mechanism comprises a supporting frame, a fixed guide assembly and a movable guide assembly, the fixed guide assembly and the movable guide assembly are fixedly installed on the front face of the supporting frame in a lifting mode, and the top of the movable guide assembly is inserted into the lower end of the fixed guide assembly. The bag throwing channel is of a long-strip-shaped structure and penetrates through the upper portion and the lower portion, and a bag blocking assembly is arranged in the bag throwing channel, installed on the movable guiding assembly and suitable for opening and closing the bag throwing channel. The inner bag materials vertically fall down along the bag throwing channel under the action of self weight, each inner bag material is firstly blocked by the bag blocking assembly, the inner bag materials are driven to fall down through the descending of the movable guide assembly, and when the lower end of the bag throwing channel is in butt joint with an outer bag, the bag blocking assembly is opened again, the inner bag materials continue to fall down, and the inner bag materials fall down. Therefore, the actual sliding path of the inner bag materials is shortened, the bag clamping probability is reduced, the bag throwing success rate is increased, continuous production is achieved, and then the packaging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic packaging machinery, in particular to a bag feeding mechanism and a packaging production line. Background Art

[0002] At present, in the domestic soft bag packaging field, there is a type of market demand, that is, small packaging bags filled with materials are re-packaged and put into large packaging bags, namely the so-called "bag-in-bag" products. Such products are particularly numerous in the two major fields of food and chemical industry. For this form of packaging bag, high requirements are placed on the quality and appearance, the packaged materials are special, and it needs to go through two packaging processes to meet certain demands of the consumer market. For manufacturers, for large-scale production and packaging, relying on manual bag loading and semi-automatic production lines results in low production efficiency, high manual labor intensity, and some chemical materials are harmful to the human body. In addition, the packaging quality under manual operation is difficult to achieve standardization and uniformity, and the product quality is not easy to control. This situation severely restricts the development of enterprises.

[0003] Facing this situation, manufacturers are in urgent need of an automated intelligent packaging device to solve the packaging requirements for reloading inner packaging bag products into large packaging bags, so as to achieve the goals of reducing labor costs, improving production efficiency, improving product quality, and realizing production line automation. The current existing technical levels of "bag-in-bag" packaging equipment are as follows:

[0004] 1. Using a horizontal bag packaging machine to meet the packaging requirements of bag-in-bag. Through the side-pushing mechanism design, the overall mechanism has complex movements, many actions, and low packaging efficiency.

[0005] 3. Using the solution of installing a fixture on a robot, which has high costs, complex program actions, cannot be widely promoted in general enterprises, and has relatively high requirements for the site and wire arrangement.

[0006] The Chinese invention patent with the authorization announcement number of CN107380547B discloses a full-automatic production line for packaging inner and outer bag materials in a set form and its packaging method. Using a simple feeding hopper, a horizontal pillow-type packaging machine, and a vertical back-sealing bag packaging machine for inner small packaging bags to fall by their own weight into the packaging bags. The upper feeding of the hopper receives the falling inner packaging bags, and through the guiding of a conical hopper, the lower outlet of the conical hopper is inserted into the bag mouth of the outer packaging bag to achieve the packaging of bag-in-bag products. This packaging structure is relatively simple, the equipment cost is relatively low, and the packaging efficiency is also improved. However, this design method is prone to bag jamming, which affects continuous production, and the success rate of bag feeding is not high. Therefore, it is necessary to improve the structure of the bag feeding mechanism of the existing horizontal packaging machine. Content of the Utility Model

[0007] The object of the present utility model is to provide a bag throwing mechanism and a packaging production line aiming at the deficiencies of the prior art, to avoid the phenomenon of bag jamming, thereby improving the success rate of bag throwing, realizing continuous production, and further improving the packaging efficiency.

[0008] The technical solution for achieving the object of the present utility model is as follows:

[0009] A bag throwing mechanism includes a support frame, and a fixed guiding component and a movable guiding component which are respectively fixedly and liftably installed on the front of the support frame. The top of the movable guiding component is inserted into the lower end of the fixed guiding component to form a vertically penetrating bag throwing channel with a long strip structure. A bag blocking component is arranged in the bag throwing channel, and the bag blocking component is installed on the movable guiding component and is adapted to open and close the bag throwing channel.

[0010] Further, a strip-shaped notch is formed in the movable guiding component along the horizontal direction. The bag blocking component includes a bag blocking cylinder fixedly installed on the movable guiding component and a baffle plate inserted into the strip-shaped notch with a gap. The end of the piston rod of the bag blocking cylinder is fixedly connected to the baffle plate.

[0011] Further, a linear module is fixedly installed on the front of the support frame along the vertical direction, and the movable guiding component makes a lifting motion through the linear module.

[0012] Further, guiding mechanisms are connected between the movable guiding component and the support frame, symmetrically arranged on both sides of the linear module, and the guiding mechanisms are arranged along the vertical direction.

[0013] Further, a bag supporting mechanism that synchronously lifts with the movable guiding component is arranged at the outlet of the bag throwing channel. The bag supporting mechanism includes a left guiding plate and a right guiding plate that can approach and move away from each other along the horizontal direction. The left guiding plate and the right guiding plate are oppositely arranged to form a guiding channel facing the bag throwing channel.

[0014] Further, the bag supporting mechanism further includes a bottom plate that synchronously lifts with the guiding component. Left and right fixing plates are respectively vertically and fixedly installed at both ends of the bottom plate. A servo motor is fixedly installed on the outer side of the right fixing plate. The output shaft of the servo motor is coaxially connected with a positive and negative lead screw rotatably installed between the left and right fixing plates. A positive adjusting block and a negative adjusting block are threadedly connected to the positive and negative lead screw. Brackets are respectively fixedly connected between the left guiding plate and the right guiding plate and the positive adjusting block and the negative adjusting block.

[0015] Further, guide rods parallel to and located above and below the positive and negative lead screw are arranged between the left and right fixing plates, and the upper and lower ends of the positive adjusting block and the negative adjusting block are respectively slidably connected to the corresponding guide rods.

[0016] Furthermore, an inclined and outwardly disposed bag - dropping shield is fixedly installed on the front surface of the upper end of the fixed guiding assembly.

[0017] Furthermore, inclined surfaces are provided on both sides of the inner wall of the movable guiding assembly, forming a flaring trumpet - shaped opening that expands outward.

[0018] A packaging production line includes an outer - bag packaging machine, a climbing conveyor, and the bag - throwing mechanism as described above. The climbing conveyor is arranged on the side of the outer - bag packaging machine. The bag - throwing mechanism is fixedly installed at the bottom end of the climbing conveyor, and the upper end of the bag - throwing channel is directly opposite the end outlet of the climbing conveyor, and the lower end is directly opposite the bag - filling station of the outer - bag packaging machine.

[0019] Adopting the above - mentioned technical solutions, the utility model has the following beneficial effects:

[0020] (1) In the utility model, the fixed guiding assembly and the movable guiding assembly arranged up and down form a bag - throwing channel with a long - strip structure, enabling the inner - bag material to vertically fall along the bag - throwing channel under the action of its own weight, improving smoothness. At the same time, a bag - blocking assembly is provided on the movable guiding assembly. Each inner - bag material is first blocked by the bag - blocking assembly. With the descent of the movable guiding assembly, the inner - bag material is driven to descend. When the inner - bag material docks with the outer bag at the lower end of the bag - throwing channel, the bag - blocking assembly opens again, and the inner - bag material continues to fall. Thus, the actual sliding path of the inner - bag material is shortened, the probability of bag jamming is reduced, the bag - throwing success rate is increased, continuous production is realized, and the packaging efficiency is further improved.

[0021] (2) In the utility model, the bag - blocking assembly drives the baffle to stretch from the strip - shaped notch into the bag - throwing channel through a bag - blocking cylinder, thereby opening and closing the bag - throwing channel. The structure is simple, and the action response is rapid.

[0022] (3) In the utility model, the linear module is used to realize the lifting of the movable assembly. The action is flexible and the motion inertia is small, thus ensuring the position - staying accuracy of each lifting motion.

[0023] (4) In the utility model, by adding a guiding mechanism, the stability of the lifting motion is improved.

[0024] (5) In the utility model, by adding a bag - supporting mechanism, the outer bag is automatically expanded when the lower end of the movable assembly docks with the outer bag, further improving the bag - throwing success rate.

[0025] (6) In the utility model, the servo motor drives the forward - and - reverse - thread screw rod to rotate, thereby driving the left guiding plate and the right guiding plate to move away from and close to each other. The structure is simple.

[0026] (7) In the utility model, through the guide rods arranged up and down, the guiding function can be realized, and at the same time, the forward - adjusting block and the reverse - adjusting block are prevented from swinging along the axial direction of the forward - and - reverse - thread screw rod, improving the stability of the lateral movement.

[0027] (8) The utility model is provided with a bag - dropping shield to ensure that the materials in the inner bag can smoothly enter the fixed guiding component.

[0028] (9) On both sides of the inner wall of the movable guiding component of the utility model, there are inclined surfaces, thus forming a flaring bell - mouth that expands outwards, enabling the materials in the inner bag to more smoothly enter the movable section from the fixed section of the bag - throwing channel, and further reducing the probability of bag jamming at the docking place.

[0029] (10) The packaging production line of the utility model conveys the materials in the inner bag to the upper end of the bag - throwing mechanism through a climbing conveyor, conveys the outer bag to the lower end of the bag - throwing mechanism through an outer - bag packaging machine, and optimizes the structure of the bag - throwing mechanism, shortens the actual sliding path of the materials in the inner bag, reduces the occurrence probability of bag jamming, improves the success rate of bag throwing, realizes continuous production, and further improves the packaging efficiency. Description of the Drawings

[0030] In order to make the content of the utility model be more clearly understood, the following further details the utility model according to specific embodiments in combination with the drawings, where:

[0031] Figure 1 is a schematic structural diagram of the bag - throwing mechanism of the utility model;

[0032] Figure 2 is an internal structural diagram of the movable guiding component of the utility model;

[0033] Figure 3 is a schematic structural diagram of the bag - supporting mechanism of the utility model;

[0034] Figure 4 is a schematic structural diagram of the packaging production line of the utility model.

[0035] The reference numerals in the drawings are:

[0036] Support frame 1, fixed guiding component 2, front upper support plate 2 - 1, rear upper support plate 2 - 2, upper side plate 2 - 3, movable guiding component 3, inclined surface 3 - 1, strip - shaped notch 3 - 2, bag - blocking component 4, bag - blocking air cylinder 4 - 1, baffle 4 - 2, support 5, bag - dropping shield 6, interconnecting plate 7, upper support plate 8, lower support plate 9, linear module 10, connecting block 11, bag - supporting mechanism 12, bottom plate 12 - 1, left fixing plate 12 - 2, right fixing plate 12 - 3, servo motor 12 - 4, positive and negative thread lead screw 12 - 5, forward adjusting block 12 - 6, reverse adjusting block 12 - 7, support 12 - 8, left guiding plate 12 - 9, right guiding plate 12 - 10, guide rod 12 - 11, adjusting rod 13, guiding mechanism 14;

[0037] Outer - bag packaging machine 100, climbing conveyor 200. Detailed Description of the Embodiment

[0038] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0039] (Example 1)

[0040] As Figures 1 to 4 shown in the packaging production line, it includes an outer bag packaging machine 100, a climbing conveyor 200 and a bag throwing mechanism. The outer bag materials are conveyed by the outer bag packaging machine 100. The climbing conveyor 200 is erected on the side of the outer bag packaging machine 100 and is used to convey the inner bag materials at a lower position to a higher position. The bag throwing mechanism is fixedly installed at the bottom of the end of the climbing conveyor 200 and includes a support frame 1, a fixed guiding component 2, a movable guiding component 3 and a bag blocking component 4. The support frame 1 is fixedly connected to the climbing conveyor 200. The fixed guiding component 2 and the movable guiding component 3 are respectively fixedly and liftably installed on the front of the support frame 1. The top of the movable guiding component 3 is inserted into the lower end of the fixed guiding component 2 to form a vertically penetrating and elongated bag throwing channel. The upper end of the bag throwing channel is directly opposite to the end outlet of the climbing conveyor 200, and the lower end is directly opposite to the bag filling station of the outer bag packaging machine, and is used to throw the inner bag materials at a higher position into the outer bag materials below, so that the inner bag materials can fall vertically along the bag throwing channel under the action of their own weight, improving the smoothness of the sliding. The bag blocking component 4 is installed on the movable guiding component 2 and is arranged in the bag throwing channel, and is used to open and close the bag throwing channel. Each inner bag material is first blocked by the bag blocking component 4. Through the lowering of the movable guiding component 3, the inner bag material is driven to descend, and when the inner bag material is docked with the outer bag at the lower end of the bag throwing channel, the bag blocking component 4 is opened again, and the inner bag material continues to fall, thereby shortening the actual sliding path of the inner bag material, reducing the occurrence probability of bag jamming, improving the success rate of bag throwing, realizing continuous production, and further improving the packaging efficiency.

[0041] Specifically, the fixed guiding component 2 is composed of a front upper support plate 2-1 and a rear upper support plate 2-2 arranged oppositely and two upper side plates 2-3 vertically connected between the sides of the two. A upper hopper support 5 is fixedly connected between the rear upper support plate 2-2 and the support frame 1. On the front of the upper end of the front upper support plate 2-1, a bag dropping baffle 6 is fixedly installed and extends obliquely outward above the conveying channel of the climbing conveyor 200, so as to ensure that the inner bag materials can smoothly enter the fixed guiding component 2 from the end of the climbing conveyor 200.

[0042] The structure of the movable guiding component 3 is similar to that of the fixed guiding component 2 and is more slender than the fixed guiding component 2, which will not be elaborated here. On both sides of the inner wall of the movable guiding component 3, inclined surfaces 3-1 are provided to form a flaring trumpet shape, so that the inner bag materials can enter the movable section of the bag throwing channel more smoothly, that is, enter the movable guiding component 3 from the fixed guiding component 2, further reducing the probability of bag jamming at the docking place.

[0043] A back surface of the activity guiding component 3 is fixedly connected with an interconnection board 7, and upper and lower supporting plates 8 and 9 are vertically and fixedly connected to upper and lower ends of the interconnection board 7. A linear module 10 arranged in a vertical direction is fixedly installed on a front surface of the support frame 1. A connecting block 11 is fixedly connected to a sliding block of the linear module 10. An adjusting rod 13 is vertically connected between the lower supporting plate 9 and the connecting block 11, so as to realize driving the activity guiding component 3 to perform a lifting motion through the linear module 10, with flexible actions and small motion inertia, thereby ensuring the position staying accuracy of each lifting motion. In order to improve the stability of the lifting motion, in this embodiment, guiding mechanisms 11 fixedly installed on the support frame 1 are symmetrically arranged on two sides of the linear module 10. The guiding mechanisms 11 are arranged in a vertical direction, and both the upper supporting plate 8 and the lower supporting plate 9 are fixedly connected with sliding bearings of the guiding mechanisms 11.

[0044] A strip-shaped notch 3-2 arranged in a horizontal direction is formed in the activity guiding component 3. The bag blocking component 4 includes a bag blocking cylinder 4-1 fixedly installed on the activity guiding component 3 and a baffle 4-2 inserted into the strip-shaped notch 3-2 with a gap. An end part of a piston rod of the bag blocking cylinder 4-1 is fixedly connected with the baffle 4-2. The baffle 4-2 is driven by the bag blocking cylinder 4-1 to stretch from the strip-shaped notch 3-2 into the bag throwing channel, so as to open and close the bag throwing channel, with a simple structure and a rapid action response.

[0045] In order to further improve the success rate of bag throwing, in this embodiment, a bag supporting mechanism 12 that synchronously lifts and lowers with the moving guiding assembly 3 is provided at the outlet of the bag throwing channel. Specifically, the bag supporting mechanism 12 includes a bottom plate 12-1, a left fixing plate 12-2, a right fixing plate 12-3, a servo motor 12-4, a forward and reverse threaded screw 12-5, a forward adjusting block 12-6, a reverse adjusting block 12-7, a bracket 12-8, a left guiding plate 12-9, and a right guiding plate 12-10. The bottom plate 12-1 is fixedly installed on the connecting block 11. The left fixing plate 12-2 and the right fixing plate 12-3 are respectively and perpendicularly fixedly installed at both ends of the bottom plate 12-1. The servo motor 12-4 is fixedly installed on the outer side of the right fixing plate 12-3. The forward and reverse threaded screw 12-5 is rotatably installed between the left fixing plate 12-2 and the right fixing plate 12-3 and is coaxially connected to the output shaft of the servo motor 12-4. The forward adjusting block 12-6 and the reverse adjusting block 12-7 are respectively threadedly connected to the corresponding areas of the forward and reverse threaded screw 12-5. The left guiding plate 12-9 and the right guiding plate 12-10 are respectively fixedly connected to the forward adjusting block 12-6 and the reverse adjusting block 12-7 through the bracket 12-8. By driving the forward and reverse threaded screw 12-5 to rotate through the servo motor 12-4, the left guiding plate 12-9 and the right guiding plate 12-10 move away from and close to each other, so as to automatically expand the outer bag when the lower end of the moving assembly 3 is docked with the outer bag, and at the same time form a guiding channel facing the bag throwing channel. The guiding channel directly connects the bag throwing channel and the outer bag, improving the success rate of bag throwing. In order to improve the smoothness of the movement of the left guiding plate 12-9 and the right guiding plate 12-10, in this embodiment, a guide rod 12-11 parallel to and located above and below the forward and reverse threaded screw 12-5 is provided between the left fixing plate 12-2 and the right fixing plate 12-3. The upper and lower ends of the forward adjusting block 12-6 and the reverse adjusting block 12-7 are respectively slidably connected to the corresponding guide rods 12-11, which can not only achieve the guiding effect, but also prevent the forward adjusting block 12-6 and the reverse adjusting block 12-7 from swinging along the axial direction of the forward and reverse screw 12-5, improving the stability of the lateral movement.

[0046] The working process of this embodiment:

[0047] The inner bag material is conveyed by the climbing conveyor 200, dropped into the fixed guiding assembly 2, and slides down into the moving guiding assembly 3. At this time, the bag throwing channel is closed by the baffle 4-2, and the inner bag material is blocked. At the same time, under the drive of the outer bag packaging machine 100, the opened bag mouth of the outer packaging bag is moved to the filling station.

[0048] The moving guiding assembly 3 descends to insert the outer packaging bag below the bag supporting mechanism 12. At this time, the bag supporting mechanism 12 works to expand the bag mouth of the outer packaging bag to ensure that the inner bag material can smoothly fall into the outer packaging.

[0049] After the bag opening of the outer packaging bag is propped open, the baffle 4-2 retracts, and the inner bag material naturally falls into the outer packaging bag with the propped-open bag opening, completing the "bag-in-bag" packaging. Each component resets in sequence, waiting for the "bag-in-bag" packaging of the next inner packaging bag.

[0050] In this embodiment, a bag dropping channel with a long strip structure is formed by the fixed guiding component 2 and the movable guiding component 3 arranged up and down, enabling the inner bag material to vertically fall along the bag dropping channel under the action of its own weight, improving smoothness. At the same time, a bag blocking component 4 is provided on the movable guiding component 3. Each inner bag material is first blocked by the bag blocking component. With the descent of the movable guiding component, the inner bag material is driven to descend. When docking with the outer bag at the lower end of the bag dropping channel, the bag blocking component opens again, and the inner bag material continues to fall, thereby shortening the actual sliding path of the inner bag material, reducing the occurrence probability of bag jamming, increasing the success rate of bag dropping, realizing continuous production, and further improving the packaging efficiency.

[0051] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bag-throwing mechanism, characterized in that: It includes a support frame, a fixed guiding component and a movable guiding component which are respectively fixedly and liftably installed on the front of the support frame. The top of the movable guiding component is inserted into the lower end of the fixed guiding component to form a long-strip-shaped bag throwing channel penetrating up and down. A bag blocking component is arranged in the bag throwing channel, and the bag blocking component is installed on the movable guiding component and is adapted to open and close the bag throwing channel.

2. The bag throwing mechanism according to claim 1, characterized in that: A strip-shaped notch is formed in the movable guiding component in the horizontal direction. The bag blocking component includes a bag blocking cylinder fixedly installed on the movable guiding component and a baffle plate inserted into the strip-shaped notch with a gap. The end of the piston rod of the bag blocking cylinder is fixedly connected to the baffle plate.

3. The bag throwing mechanism according to claim 1, characterized in that: A linear module arranged in the vertical direction is fixedly installed on the front of the support frame, and the movable guiding component moves up and down through the linear module.

4. The bag-throwing mechanism according to claim 3, characterized in that: Guiding mechanisms are connected between the movable guiding component and the support frame, and are symmetrically arranged on both sides of the linear module. The guiding mechanisms are arranged in the vertical direction.

5. The bag throwing mechanism according to claim 1, wherein: A bag supporting mechanism that moves up and down synchronously with the movable guiding component is arranged at the outlet of the bag throwing channel. The bag supporting mechanism includes a left guiding plate and a right guiding plate that can approach and move away from each other in the horizontal direction. The left guiding plate and the right guiding plate are oppositely arranged to form a guiding channel facing the bag throwing channel.

6. The bag throwing mechanism according to claim 5, characterized in that: The bag supporting mechanism further includes a bottom plate that moves up and down synchronously with the guiding component. Left and right fixing plates are respectively and vertically fixedly installed at both ends of the bottom plate. A servo motor is fixedly installed on the outer side of the right fixing plate. The output shaft of the servo motor is coaxially connected to a positive and reverse lead screw rotatably installed between the left and right fixing plates. A positive adjusting block and a reverse adjusting block are threadedly connected to the positive and reverse lead screw. Supports are respectively fixedly connected between the left guiding plate and the right guiding plate and the positive adjusting block and the reverse adjusting block.

7. A bag throwing mechanism according to claim 6, characterized in that: A guide rod parallel to the upper and lower sides of the positive and reverse lead screw is arranged between the left and right fixing plates. The upper and lower ends of the positive adjusting block and the reverse adjusting block are respectively slidably connected to the corresponding guide rods.

8. A bag-throwing mechanism according to claim 1, characterized in that: A bag falling blocking cover inclined outward is fixedly installed on the front of the upper end of the fixed guiding component.

9. The bag throwing mechanism according to claim 1, characterized in that: Slopes are arranged on both sides of the inner wall of the movable guiding component to form a flaring trumpet shape.

10. A packaging production line, characterized in that: It includes an outer bag packaging machine, a climbing conveyor and a bag throwing mechanism according to any one of claims 1 to 9. The climbing conveyor is arranged on the side of the outer bag packaging machine. The bag throwing mechanism is fixedly installed at the bottom of the end of the climbing conveyor, and the upper end of the bag throwing channel is directly opposite to the end outlet of the climbing conveyor, and the lower end is directly opposite to the bag filling station of the outer bag packaging machine.

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