Quick adjusting and positioning mold for bag body forming

Abstract

The utility model relates to the field of bag body processing moulds, and discloses a quick adjusting and positioning mould for bag body forming, which comprises a mould core, sliding components mounted on the mould core, movable mould side plates arranged on the left side and the right side of the mould core, and at least one sliding component respectively connected with the mould side plates on the left side and the right side. Each sliding assembly comprises a positioning sliding block and a multi-layer sliding rail, the positioning sliding blocks are arranged on the multi-layer sliding rails in a sliding mode, the mold side plates are connected with the positioning sliding blocks, a plurality of positioning parts are arranged on the positioning sliding blocks at preset intervals, and limiting inserting pieces are arranged at the corresponding positions of the positioning parts. The limiting inserting piece is matched with the positioning part through vertical movement so as to lock left-right movement of the positioning sliding block. The structure of the multiple layers of sliding rails can achieve adjustment of at least double strokes, the applicability of the mold is improved, and the positioning parts are evenly arranged at intervals so that a worker can conveniently conduct adjustment according to the specific face width size of a bag body.

Description

Technical Field

[0001] The utility model relates to the field of bag body processing molds, in particular to a fast-adjusting and positioning mold for bag body molding. Background Art

[0002] The packaging bag includes a bag body made of paper bags, non-woven fabrics or other materials. If a forming process requires folding the sides of the two sides in a U-shaped state, the production equipment needs to be equipped with a special mold that extends into the bag body. The mold also needs side panels with a spacing of the width of the bag body on both sides, so that the inner side can support the sides of the bag body for folding and forming. For example, the Chinese utility model patent with announcement number CN212353094U, entitled "An adjustable mold for three-dimensional bag forming and a three-dimensional bag forming machine", discloses an adjustable mold for three-dimensional bag forming, including an inner mounting plate, and side panels are connected to both sides of the inner mounting plate. The side panels can be translated left and right relative to the inner mounting plate, and the side panels can be removed and replaced relative to the inner mounting plate. The inner mounting plate is hollow, and an adjustment screw is provided in the inner mounting plate that is installed perpendicular to the side panel. The left and right ends of the adjustment screw are positive and negative teeth, and the left and right ends of the adjustment screw are respectively installed with inner adjustment plates connected to the side panels, and the adjustment screw can drive the inner adjustment plate to translate left and right. Although this mold can adjust the distance between the side panels and disassemble and replace the side panels of different widths, the mold can meet the production needs of three-dimensional bags with different lengths and widths. However, due to the structure of the adjusting screw rod, it is not accurate enough when locking the specific position and needs to be positioned manually, which makes the operation cumbersome. Summary of the invention

[0003] The utility model aims at the shortcomings of the prior art and provides a fast-adjusting and positioning mold for bag body molding.

[0004] To solve the above technical problems, the utility model is solved by the following technical solutions:

[0005] A fast adjustment positioning mold for bag body forming, comprising a mold core, a sliding assembly installed on the mold core, movable mold side plates arranged on the left and right sides of the mold core, at least one sliding assembly connected to the mold side plates on the left and right sides, each set of sliding assemblies comprising a positioning slider and a multi-layer slide rail, the positioning slider is slidably arranged on the multi-layer slide rail, the mold side plate is connected to the positioning slider, a plurality of positioning components are arranged on the positioning slider at preset intervals, and a limiting plug-in is arranged at a corresponding position of the positioning component, and the limiting plug-in cooperates with the positioning component by moving up and down to lock the positioning slider to move left and right. Compared with the guide rail of the prior art, the structure of the multi-layer slide rail can realize that the mold face width size adjustment range can extend to both sides close to the length of the multi-layer slide rail body, and realize the adjustment of at least close to double the stroke, and the adjustment range is greatly increased, which increases the applicability of the mold. The positioning components are evenly spaced to facilitate the staff to adjust. Compared with the traditional motor-driven screw rod adjustment accuracy that is difficult to ensure, or the earlier bolt fixing method that is cumbersome to operate and difficult to measure, the calculation and adjustment of the utility model scheme are very simple, because there is no requirement for the precision of the power source, and the equipment cost will also be greatly reduced.

[0006] Preferably, the multi-layer slide rail includes a guide rail and a middle rail, the guide rail is fixed to the guide rail of the mold core, the middle rail is slidably arranged on the guide rail, and the positioning slider is slidably arranged on the middle rail.

[0007] Preferably, the positioning component is a toothed protrusion, and the limiting plug-in is a tooth block matching the toothed protrusion. When the limiting plug-in is engaged with the positioning component, the left and right movement of the positioning slide block is locked.

[0008] Preferably, the positioning component is a limiting hole, and the limiting plug-in is an inserting strip having a shape matching that of the limiting hole. When the limiting plug-in is inserted into the positioning component, the left and right movement of the positioning slider is locked.

[0009] Preferably, the left and right mold side plates are respectively connected with at least two sets of upper and lower sliding components, the height positions of each set of sliding components are staggered, and the spacing between every two adjacent positioning components is 1-10 mm.

[0010] Preferably, the guide rail and the middle rail are provided with mutually limiting blocking members on opposite sides thereof, and the middle rail and the positioning slide block are also provided with mutually limiting blocking members on opposite sides thereof.

[0011] Preferably, the outward travel of the middle rail along the guide rail does not exceed half of the length of the guide rail, and the outward travel of the positioning slider along the middle rail does not exceed half of the length of the middle rail.

[0012] Preferably, the limiting plug-in is connected to a power source for driving it to move up and down.

[0013] Preferably, at least one of the power sources is connected to a steering connection pair, which has a transmission connection surface for changing the driving direction of the power source and converting it into the up and down movement of the limit plug. The function of the steering connection pair is to give way, because of the limitation of the contact part between the mold and the bag body, especially the bottom of the mold needs to extend into the bag body, so there is not enough space for the power source to be set, so the power drive direction can be set to horizontal or other directions, and the driving direction is converted into the up and down movement of the limit plug through the steering connection pair to achieve giving way, so that the mold power source will not touch the bag body and affect the processing process.

[0014] Preferably, the steering connection pair consists of an oblique guide block and an oblique matching block, the oblique guide block is connected to a power source, the limit plug-in is connected to or integrally formed with the oblique matching block, the inclined surface of the oblique guide block and the inclined surface of the oblique matching block fit together, so that the left and right movement of the oblique guide block is converted into the up and down movement of the oblique matching block.

[0015] The utility model has significant technical effects due to the adoption of the above technical solutions:

[0016] The structure of the multi-layer slide rail can achieve that the adjustment range of the mold surface width can be extended to both sides close to the length of the multi-layer slide rail body, the adjustment range is greatly increased, and the applicability of the mold is increased.

[0017] The positioning components are evenly spaced to facilitate the staff to adjust the width of the mold according to the specific width of the bag body. Each time, they only need to calculate how many positioning components need to be moved inward or outward. Compared with the traditional motor-driven screw adjustment accuracy that is difficult to ensure, or the earlier bolt fixing method that is cumbersome to operate and difficult to measure, the calculation and adjustment of the utility model are very simple. Because there is no requirement for the precision of the power source, the equipment cost will be greatly reduced, saving the time used for changing molds in production and improving the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a front view of the utility model.

[0020] Figure 3 It is an exploded view of the utility model.

[0021] Figure 4 This is a schematic diagram of one of the structures of the steering connection pair.

[0022] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. mold core; 2. mold side plate; 3. sliding assembly; 31. positioning slider; 311. positioning component; 32. multi-layer slide rail; 321. guide rail; 322. middle rail; 4. limit plug-in; 5. power source; 61. oblique guide block; 62. oblique matching block. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. Example

[0024] A fast adjustment positioning mold for bag forming, such as Figure 1-2 As shown, it includes a mold core 1, a sliding assembly 3 is installed on the mold core 1, movable mold side plates 2 are arranged on the left and right sides of the mold core 1, and the mold side plates 2 on the left and right sides are respectively connected to at least one sliding assembly 3, each set of sliding assemblies 3 includes a positioning slider 31 and a multi-layer slide rail 32, the positioning slider 31 is slidably arranged on the multi-layer slide rail 32, the mold side plate 2 is connected to the positioning slider 31, and a plurality of positioning components 311 are arranged on the positioning slider 31 at preset intervals, and a limiting plug-in 4 is arranged at the corresponding position of the positioning component 311, and the limiting plug-in 4 cooperates with the positioning component 311 by moving up and down to lock the positioning slider 31 to move left and right. When the entire mold is working, it is generally equipped with an upper and lower power source to facilitate its entry and exit of the bag body, and can also perform the action of pressing the bag body downward to form. This structure is a conventional setting for people in this field, and its structure and working principle are not repeated here.

[0025] Since the positioning slider 31 and the limit plug 4 are in an up-and-down position relationship rather than an inside-outside position relationship, the thickness of the mold can be greatly reduced, and it can be applied to the adjustment of bags of more sizes. In this embodiment, the multi-layer slide rail 32 is a double-stroke double-layer guide rail, which can actually be extended to three or more layers of guide rails according to needs, but if more than three layers are set, its thickness will be thicker.

[0026] like Figure 3 As shown, the multi-layer slide rail 32 includes a guide rail 321 and a middle rail 322. The guide rail 321 is fixed to the guide rail 321 of the mold core 1, and the middle rail 322 is slidably disposed on the guide rail 321, and the positioning slider 31 is slidably disposed on the middle rail 322. The multi-layer slide rail can achieve better sliding smoothness through rollers or bearings, which will not be described in detail here.

[0027] As one of the implementation methods, Figure 4As shown, the positioning component 311 is a toothed protrusion, and the limiting plug-in 4 is a tooth block matching the toothed protrusion. When the limiting plug-in 4 is engaged with the positioning component 311, the left and right movement of the positioning slider 31 is locked. As another embodiment, the positioning component 311 is a limiting hole, and the limiting plug-in 4 is an inserting strip matching the shape of the limiting hole. When the limiting plug-in 4 is inserted into the positioning component 311, the left and right movement of the positioning slider 31 is locked. This embodiment is not drawn in the figure.

[0028] The mold side plates 2 on the left and right sides are respectively connected with at least two sets of upper and lower sliding components 3, and the mold core has at least four long-stroke multi-layer slide rails 32. The height positions of each set of sliding components 3 are staggered, and the spacing between every two adjacent positioning components 311 is 1-10mm. The spacing can be 1mm, or 10mm, preferably 5mm, which is convenient for calculation and adjustment.

[0029] The guide rail 321 and the middle rail 322 are provided with mutually limiting blocking members on the opposite sides thereof, and the middle rail 322 and the positioning slider 31 are also provided with mutually limiting blocking members on the opposite sides thereof. The outward travel of the middle rail 322 along the guide rail 321 does not exceed half of the length of the guide rail 321, and the outward travel of the positioning slider 31 along the middle rail 322 does not exceed half of the length of the middle rail 322. Such a structure can ensure that the multi-layer slide rail 32 still maintains a certain strength when it is pulled outward. The mold core is equipped with four long-stroke multi-layer slide rails, and the second multi-layer slide rails are double-layer sliding. Taking the guide rail 321 with a body length of 150 mm as an example, the outer end faces of the mold side panels 2 on the left and right sides are 15 mm away from the ends of the guide rail 321. When the multi-layer slide rail 32 is fully retracted, the minimum mold surface width is 180 mm. The multi-layer slide rail 32 is stretched to both sides. The stretching can be done by pulling out the positioning slider 31 first, or by pulling out the middle rail 322 first, or both can be pulled out at the same time. Assuming that the maximum sliding stroke of the positioning slider 31 can reach 120 mm, the mold surface width can be adjusted from 180 mm to a maximum width of 420 mm.

[0030] The limit plug 4 is connected to a power source 5 that drives it to move up and down. The power source 5 is generally a linearly driven cylinder or electric cylinder, but it can be matched with a motor of a screw, a gear and other components. The setting of the power source 5 is a conventional means that can be easily selected by those skilled in the art according to the specific transmission direction, cost and accuracy, and will not be elaborated here.

[0031] At least one of the power sources 5 is connected to a steering connection pair, which has a transmission connection surface for changing the driving direction of the power source 5 and converting it into the up and down movement of the limit plug 4. The steering connection pair transmission means for converting the left and right movement into the up and down movement mainly include the following: gear transmission: the change of the movement direction can be achieved through the meshing of gears. For example, a horizontally placed gear can be meshed with a vertically placed gear; chain transmission: the chain transmission can achieve the change of the movement direction through the cooperation of the chain and the sprocket. By designing a suitable sprocket layout, horizontal motion can be converted into vertical motion; screw drive: screw drive can convert horizontal rotational motion into vertical linear motion; worm drive: the worm and worm wheel in the worm drive can achieve a change in the direction of motion; belt drive: by designing a suitable pulley, belt drive can also achieve a change in the direction of motion and convert horizontal motion into vertical motion; connecting rod mechanism: through the design of the connecting rod mechanism, motion in one direction can be converted into motion in the vertical direction. For example, a crank-connecting rod mechanism can be used to convert horizontal motion into vertical motion; it can also be achieved by setting a crank on the gear; cam mechanism: the cam mechanism can achieve a change in the direction of motion by designing a suitable cam and follower such as a roller or slider; slider-crank mechanism: this mechanism can achieve the conversion from left and right motion to up and down motion by combining a horizontally moving slider with a vertically moving crank; pneumatic or hydraulic transmission directly changes the output direction of the fluid to achieve vertical up and down motion. These transmission methods have their own characteristics and applicable scenarios. The main purpose is to insert the mold core 1 into the bag to be formed, and the mold side plate 2 is stretched to the side. Therefore, the power source at the bottom generally does not have space to directly drive the limit plug 4 vertically, otherwise it will collide with the bag. In order to arrange the spatial layout more reasonably, a steering connection pair is needed that can convert the horizontal output into the up and down displacement of the limit plug 4. The selection of a suitable transmission method requires comprehensive consideration of factors such as the specific load size, accuracy requirements, and spatial layout in this field.

[0032] As one of the implementations in the above example, Figure 4 As shown, the steering connection pair is composed of an oblique guide block 61 and an oblique matching block 62, the oblique guide block 61 is connected to the power source 5, the limit plug-in 4 is connected to the oblique matching block 62 or is integrally formed, the inclined surface of the oblique guide block 61 and the inclined surface of the oblique matching block 62 fit each other, so that the left and right movement of the oblique guide block 61 is converted into the up and down movement of the oblique matching block 62.

[0033] During operation, because the distance between every two adjacent positioning components 311 is a fixed value, it is convenient for the staff to make manual adjustments. Each time the specifications of the bag body change, the corresponding width can be directly calculated by adjusting the number of positioning components 311. Before adjustment, the driving power source can also be automatically disengaged through program control when changing the mold. The limit plug-in 4 is disengaged from the matching relationship with the positioning slider 31, the sliding of the positioning slider 31 is unlocked, and then the positioning components 311 set at intervals are used to adjust the calculated position in units, and then the power source is driven to lock the limit plug-in 4 at this position of the positioning slider 31, thereby completing the adjustment of the mold width.

[0034] Generally speaking, the mold side panel 2 can also be a fixed connection. Because the bottom of the mold side panel 2 is made to give way, it can actually adapt to the processing of bags of most depths. However, in order to improve the versatility of the mold, the mold side panel 2 and the sliding assembly can be set to be detachable, which is convenient for removing the mold side panel 2 to adjust the mold width, and then install the same mold side panel 2 or mold side panels 2 of different sizes as needed.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like of the mold side plate 2 is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A quick-adjusting positioning mold for bag forming, comprising a mold core (1), a sliding assembly (3) mounted on the mold core (1), movable mold side plates (2) arranged on the left and right sides of the mold core (1), and the mold side plates (2) on the left and right sides are respectively connected to at least one sliding assembly (3), characterized in that: Each set of sliding components (3) comprises a positioning slider (31) and a multi-layer slide rail (32); the positioning slider (31) is slidably mounted on the multi-layer slide rail (32); the mold side plate (2) is connected to the positioning slider (31); a plurality of positioning components (311) are arranged on the positioning slider (31) at preset intervals; a limiting plug-in (4) is arranged at a position corresponding to the positioning component (311); the limiting plug-in (4) cooperates with the positioning component (311) by moving up and down, thereby locking the positioning slider (31) from moving left and right.

2. A quick adjustment and positioning mold for bag forming according to claim 1, characterized in that: The multi-layer slide rail (32) comprises a guide rail (321) and a middle rail (322), wherein the guide rail (321) is fixed to the guide rail (321) of the mold core (1), the middle rail (322) is slidably disposed on the guide rail (321), and the positioning slider (31) is slidably disposed on the middle rail (322).

3. A quick adjustment and positioning mold for bag forming according to claim 1, characterized in that: The positioning component (311) is a tooth-shaped protrusion, and the limiting plug-in (4) is a tooth block matching the tooth-shaped protrusion. When the limiting plug-in (4) is engaged with the positioning component (311), the left and right movement of the positioning slide block (31) is locked.

4. A quick adjustment and positioning mold for bag forming according to claim 1, characterized in that: The positioning component (311) is a limiting hole, and the limiting plug-in (4) is an inserting strip having a shape matching that of the limiting hole. When the limiting plug-in (4) is inserted into the positioning component (311), the left-right movement of the positioning slide block (31) is locked.

5. The quick-adjusting positioning mold for bag forming according to claim 1, characterized in that: The left and right mold side plates (2) are respectively connected to at least two upper and lower groups of sliding components (3), and the height positions of each group of sliding components (3) are staggered, and the spacing between every two adjacent positioning components (311) is 1-10 mm.

6. A quick adjustment and positioning mold for bag forming according to claim 2, characterized in that: The guide rail (321) and the middle rail (322) are provided with mutually limiting blocking members on opposite sides thereof, and the middle rail (322) and the positioning slide block (31) are also provided with mutually limiting blocking members on opposite sides thereof.

7. A quick adjustment and positioning mold for bag forming according to claim 6, characterized in that: The outward travel of the middle rail (322) along the guide rail (321) does not exceed half the length of the guide rail (321), and the outward travel of the positioning slide block (31) along the middle rail (322) does not exceed half the length of the middle rail (322).

8. The quick-adjusting positioning mold for bag forming according to claim 1, characterized in that: The limit plug-in unit (4) is connected to a power source (5) for driving the limit plug-in unit to move up and down.

9. A quick adjustment and positioning mold for bag forming according to claim 8, characterized in that: At least one of the power sources (5) is connected to a steering connection pair, and the steering connection pair has a transmission connection surface, which is used to change the driving direction of the power source (5) and convert it into up and down movement of the limit plug-in (4).

10. A quick adjustment and positioning mold for bag forming according to claim 9, characterized in that: The steering connection pair comprises an oblique guide block (61) and an oblique matching block (62); the oblique guide block (61) is connected to a power source (5); the limit plug-in (4) is connected to or integrally formed with the oblique matching block (62); the oblique surface of the oblique guide block (61) and the oblique surface of the oblique matching block (62) are fitted to each other, so that the left-right movement of the oblique guide block (61) is converted into the up-and-down movement of the oblique matching block (62).

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